JPS6313039B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a one-operating-side air-port type water ring pump, and more specifically, the present invention relates to a water ring pump of a single working side air ring type. The present invention relates to a water ring pump in which a control plate, a cover, and a bearing part are successively installed on both sides in the axial direction in a spigot type.

Water ring pumps, which compress gas by rotating water or liquid, have been widely used in industry and public works, especially as vacuum pumps, and sometimes as compressors. and 1
Among the single-rotation type, the single-rotation type has become the main type in recent years because of its three important advantages: performance, price, and noise.

Since a single-action water ring pump has an operating mechanism that rotates an impeller eccentrically within a cylindrical casing, the main parts of the pump necessarily include eccentric machining. Furthermore, since the double-blade, double-support type is superior in the capacity range required for water ring pumps, most pumps, except for very small ones, are manufactured in this type. In the double-blade type, there are two intake channels for each impeller.
There is an exhaust flow path, and a flow path is required to connect these to the pump intake port and pump exhaust port. Conventionally, there have been two types of pump structures for single-acting water ring pumps, in terms of how eccentric machining is taken and how communication channels are taken.

FIGS. 6 and 7 show a typical conventional single-acting side air port type structure, which will be referred to as a cylindrical casing type for convenience. In the cylindrical casing type, the casing 101 has a simple cylindrical shape, and a control plate 106 and a cover 107 having an outer diameter approximately equal to the outer diameter of the casing are arranged on both sides thereof.

The rotary shaft 104 and the shaft seal/bearing portion are associated with each other so that the impeller 105 is installed eccentrically with respect to the casing 101 . Covers 107, 107 on both sides
pump inlet port 113 and pump outlet port 1, respectively.
14 is provided, and an intake manifold 115 and an exhaust manifold 116 are provided to separate and merge the two pump intake ports 113, 113 and the pump exhaust ports 114, 114 on both sides, and the intake port 113a for the entire pump. , the exhaust port 114a of the pump as a whole is connected to these intake and exhaust manifolds 115, 1.
16. In addition, the support leg 117 of the pump
is provided on the cover 107.

The disadvantage of such a cylindrical casing type is that eccentric machining is often required. Among the main parts, the casing 101, the control plate 106, and the cover 107 are assembled in a spigot type with a circumferential stepped portion having a diameter approximately equal to the casing diameter. On the other hand, since the shaft seal/bearing part is concentric with the rotation axis, and the impeller 105 and the casing 101 are in an eccentric relationship, the control plate 106,
The cover 107 requires eccentric processing. Most of the machining of water ring pumps is lathe processing.
In lathe machining, eccentric machining adds time in terms of mounting the stock. In particular, since the cover 107 is a spigot type combination, the machining accuracy of the circumferential step must be perfectly matched on both sides of the pump, so high accuracy is required.
The center of the circumferential step relative to 06 and the center of the circumferential step relative to the bearing must both be on the longitudinal center line, and even if a high-precision jig/yatoi is used for machining, the jig/yatoi High-precision machining is required to match the yatoi, and the need for a jig and yatoi itself increases production costs.

Next, the two intake and exhaust manifolds 115, 116
Since this is attached to the upper part of the pump, the pump becomes larger, and the flange arrangement at the communication part with the cover 107 increases material and processing costs. Furthermore, since the casing 101 has a simple cylindrical shape, it is likely to be distorted after processing, and also during operation, due to the distribution of internal pressure, it is likely to be distorted, which has disadvantages such as the need to increase the thickness of the casing. was. Furthermore, the disassembly jack bolts cannot be set for the casing 101, etc., making disassembly and
It was difficult to assemble.

In consideration of the above-mentioned drawbacks of the cylindrical casing type, the structures shown in FIGS. 8 and 9 were devised. Figures 8 and 9
The figure shows another typical structure of the single-acting side air port type, and for convenience it will be referred to as the integrated casing type.
In this comprehensive casing type, casing 101
In this case, a cylindrical casing type casing 101 and intake/exhaust manifolds 115, 116 are integrated, and a pump leg 117 is also provided.

Casing 101, control board 106, cover 10
Combination No. 7 is a spigot type, but the outer diameter of the control plate 106 protruding from the side end surface of the casing 101 is substituted for the circumferential step for that purpose (see the control plate in Fig. 9). is approximately equal to the outer diameter of the impeller 105 and is concentric with the impeller 105. For this reason, as for eccentric processing, the casing 10
1. Only the inner circumferential surface is processed, and this surface has nothing to do with pump assembly, so high precision is not required. Other advances were seen in the miniaturization of pumps, reduction in the number of parts, and ease of disassembly and assembly.

Although the integrated casing type described above has provided some improvements as described above, it also has other drawbacks. That is, the casing 101 has the intake and exhaust passages 10.
Since 2,103 were integrated, the casing 10
1. Both the covers 107 are significantly deformed from the circular shape,
Furthermore, the size of the matching flange portion 108 has increased, and the time required for machining the bolt holes has also increased. Control board 106
Since the cover 107 is attached to the cover 107 with bolts, not only does this increase the time required for machining, but also the bolts are tightened from the impeller side, and there is a risk of an accident if the bolts loosen during operation.

A more important drawback is particularly noticeable in side vent types. That is, in the side air port type, the impeller 10
5 and the control plate 106 on both sides corresponds to a sliding surface, and this surface must maintain a small gap as designed when assembly is completed. For this reason, in the integrated casing type, the casing 101 and Impeller 105
Not only the axial length of the cover 107 but also the thickness of the control plates 106 on both sides and the depth at which the control plates 106 fit together in the cover 107 must be machined with high precision. In order to achieve high precision in thickness machining or machining in the length direction of a rotating body, the machining time increases from a measurement point of view. In this way, a comprehensive casing type was devised to eliminate the drawbacks of the cylindrical casing type, but due to the new drawbacks, there was not much progress overall, and both have been used. .

In view of the above-mentioned current situation, the present invention aims to eliminate the drawbacks of the integrated casing type, reduce weight and size, shorten processing time, and facilitate disassembly and assembly.
Furthermore, the present invention aims to establish the basic structure of a single-acting-side air-ring type water ring pump, which facilitates development not only into the conventional horizontal type but also into a vertical type pump or a pump structure with two impellers.

The gist of the present invention is to have a cylindrical inner cylinder part in which a double-blade type impeller is installed eccentrically, and a pair of externally installed parts with respect to the inner cylinder part. A cylindrical or approximately cylindrical outer cylinder having an inner diameter equal to the inner diameter of the inner cylinder plus the distance subtracting the impeller diameter from the inner diameter of the inner cylinder, and whose center coincides or substantially coincides with the center of the rotation axis of the impeller. furthermore, an intake flow path, a working water supply channel, and an exhaust flow path are formed between the inner cylinder part and the outer cylinder part, and both outer circumferential ends of the outer cylinder part are formed with a regular circumference. a casing, and forming a stepped portion with a perfect circumference in relation to the shape of the outer peripheral end of the casing on one side outer peripheral end of the disc-shaped body having an outer diameter substantially equal to the outermost diameter of the casing, A step part with a perfect circumference is formed at the outer peripheral end of the other side, and a double partition wall is provided so as to include a shaft hole provided in the center inside and have a space serving as a water conduit in the diametrical direction. and an exhaust side, and an opening that communicates with the supply waterway is provided in the space, and an intake opening and an intake port that communicate with the intake flow path and the inner cylinder portion, respectively, are provided on the intake side, and the exhaust flow is provided on the exhaust side. a control board provided with an exhaust opening and a discharge port that communicate with the passage and the inner cylinder, respectively;
A stepped portion is formed at the outer peripheral end of the substantially bowl-shaped body having an outer diameter approximately equal to the outermost diameter of the casing in association with the stepped shape of the outer peripheral end of the control plate, and is concentric with the stepped portion. A shaft seal is provided in the center, a partition wall is provided at a position corresponding to the partition wall provided on the control plate for sealing, a replenishment port is provided at a position corresponding to the replenishment waterway opening, and an appropriate number of bolt holes are provided on the outer periphery. and a bearing portion having a concentric step that can be fitted into a concentric step provided on the outer surface of the cover, and the casing, the control plate, and the cover are connected to the concentric step provided on the outer surface of the cover. Fits with a spigot at the part,
The bolt inserted through the bolt hole seat is also provided on the tightening side, and the stepped portion of the bearing portion is provided sideways in a spigot type on the stepped portion of the outer surface of the cover. By aligning the centers of the casing, control board, cover, and bearing parts with the center of the rotating shaft, it is possible to easily process and assemble the main components of the pump, and to adjust the axis of each part. It can be carried out in a short period of time with high precision and solves the above-mentioned problems.

In addition, it is a single-actuation type, that is, the impeller rotates once and the intake air
Among water ring pumps in which compression and exhaust are performed in one stroke, there are two types: a double-blade type, which performs intake and exhaust from the side of the impeller vehicle, and the other, depending on the state of intake and exhaust to the impeller.
The present invention can be implemented in both types, but is particularly effective in double-blade type water ring pumps. This invention is effective not only for horizontally installed pumps but also for vertically installed pumps, without making any changes to the basic structure in which the control plate, cover, and bearing are all concentrically stepped and installed on the side in a spigot type.

The details of the present invention will be explained based on the embodiments shown in the drawings. Fig. 1 is a central cross-sectional view of a first working side air ring pump of the present invention, taken in a section perpendicular to the rotation axis; The figure is a vertical cross-sectional view of the pump in the direction of the rotational axis, Figure 3 is a front view of the control board on the cover side, and Figure 4 is a longitudinal sectional view of the pump in the direction of the rotation axis.
5 is a front view of the outer surface of the cover, and FIG. 5 is a central cross-sectional view showing the principle of the casing structure of the one-acting-side air-port water ring pump of the present invention.

In the figure, 1 is a cylindrical or approximately cylindrical casing that is the main body of the pump, and the casing 1 is connected to the rotating shaft 2.
It is composed of a cylindrical inner cylinder part 4 in which an impeller 3 attached to the cylinder is eccentrically installed, and an outer cylinder part 5 which is installed externally in a pair with respect to the inner cylinder part 4. It has an inner diameter that is equal to the inner diameter of the inner cylinder part 4 plus the distance obtained by subtracting the diameter of the impeller 3 from the inner diameter of the inner cylinder part 4,
In addition, it is a cylindrical body or a substantially cylindrical body whose center coincides with or substantially coincides with the center of the rotation axis of the impeller 3, and an intake flow path 6 and an exhaust flow path 7 are defined between it and the inner cylindrical portion 4. It is something. Reference numeral 8 denotes a supply water channel for working water defined by partition walls 9 and 9 between the intake and exhaust channels 6 and 7.

The casing of a conventional single-action water ring pump basically has a cylindrical inner cylinder part 4, as shown in FIG.
The impeller 3 shown by the imaginary line is eccentrically positioned so as to be almost in contact with the inner circumferential wall of the inner cylinder portion 4. Therefore, the inner cylinder part 4
A crescent-shaped space is formed between the impeller 3 and the impeller 3, and its width is at its maximum on the opposite side of the impeller 3 from where it approaches the inner circumferential wall.
The width is the inner diameter of the impeller 3 minus the diameter of the impeller 3. In principle, in the present invention, instead of the conventional casing having the above structure, a new outer cylinder part 5 is added to the inner cylinder part 4, and the center of the outer cylinder part 5 is aligned with the center of the rotation axis of the impeller 3. A casing was used in which a space having substantially the same shape as the crescent-shaped space was arranged and formed to face each other by integrally extending the space.

The shape of the control plate 10 is a disc with the same diameter as the casing 1, with a rotating shaft hole 11 for inserting the rotating shaft 2 in the center.
Further, an approximately crescent-shaped intake port 12 and a discharge port 13 are provided around the rotation shaft hole 11, and at the top thereof,
An intake opening 14 and an exhaust opening 15 that communicate with the intake and exhaust channels 6 and 7 of the casing 1, respectively, and a replenishment waterway opening 16 that communicate with the working water supply waterway 8 are bored. Reference numerals 18 and 18 denote partition walls that divide the control plate 10 into two, an intake side and an exhaust side, and include a rotation shaft hole 11 therein. 11 is formed. 20 are reinforcing ribs provided as appropriate to reinforce the control board 10.

The shape of the cover 21 is similar to that of the casing 1 and the control board 10.
It has a substantially bowl-shaped body with the same diameter as the one shown in FIG. A plurality of bolt hole seats 27 are provided around the periphery, and support legs 28, 28 are provided in series at the lower part.

Although not shown on the inner surface of the substantially bowl-shaped cover 21 on the control plate side, there is a partition wall 1 of the control plate 10.
A partition wall similar to 8 and 18 is provided, and like the control board 10, it is partitioned into an intake side and an exhaust side, and when the pump is assembled, the intake air is partitioned between the cover 21 and the control board 10. A space for air intake and a space for discharge are formed, and the working water supply port 23 of the cover 21 communicates with the water conduit 19 of the control board 10 while being separated from the air intake space and the discharge space. .

The cover 21 has a pump intake/exhaust port 29 or 30 connected to the intake space or the discharge space, respectively, in a conductive manner. However, there are various ways to install it, such as attaching it to the front of the cover 21 instead of the side, or not attaching the pump intake and exhaust ports 29 and 30 to the cover 21 and connecting the intake and exhaust flow to the casing 1. It may be installed in such a way that it communicates with the channels 6 and 7, or it may be installed with one cover 21.
It is also possible to provide both a pump intake port 29 and a pump exhaust port 30.

In the embodiment, the assembly of the pump includes, for example, the control board 10.
Steps 31, 31a, 31b for fitting the spigots are provided and formed around the circumferential end of the cover 21 in a perfect circumferential arrangement, and the steps 31, 31a, 31b are fitted in a spigot type, and the left and right covers 21 This is done by tightening the connecting bolts 25 inserted into the bolt hole seats 27 of , 21.

In the present invention, as described above, the casing 1 is cylindrical or approximately cylindrical, and the control plate 10 and the cover 21 are
spigot combination stepped portions 31, 31a, 31b
Since the center is aligned with the center of the rotating shaft and is formed in a perfect circumferential shape approximately equal to the outermost diameter of the casing 1, the surfaces of the stepped portions 31, 31a, and 31b require precision machining and finishing. This is much easier than in the case of a step part where the center of the conventional cylindrical casing type does not coincide with the center of the rotating shaft.
Attaching the control board 10 and cover 21 to the side,
Since the outer periphery of the control plate 10 appears on the outside, the adjustment is positionally accurate and simple.

Although not shown as another embodiment of the pump assembly, step portions 31, 31a, 31b for assembling the spigot similar to those described above are formed, and bolt hole seats 2 of the cover 21 are also formed at both ends of the casing 1.
Of course, it is also possible to connect the casing 1 and the cover 21 at each side end of the casing 1 using short bolts instead of the connecting bolts 25.

A bearing part 33 with a bearing 32 for supporting the rotating shaft 2 is installed on the outside of the covers 21, 21, and a shaft sealing part 17 for watertightness is installed around the rotating shaft hole 22 of the cover 21, unlike a conventional pump. It will also be installed internally.

The position of the casing 1 at the time of assembly is top eccentric as shown in the embodiment diagram, that is, the impeller 3 is eccentric above the inner cylinder 4, and the intake and exhaust channels 6, 7 are located at the upper part of the inner cylinder 4. In addition to the lower eccentric type, which is the opposite of the above, or the diagonal eccentric type, which is an intermediate state between these, it is possible to take any position in any direction. If the diagonal eccentric type is used, the radial load generated during pump operation, which will be described later, acts upward, which offsets the downward weight of the impeller 3 and rotating shaft 2 and reduces vibration, which is an advantage. is obtained.

The configuration of the water ring pump of the present invention is as described above, and its operation begins by pumping a certain amount of working water into the cover 2.
When the working water is replenished from the working water supply port 23 of the casing 1, a part of the water passes through the water conduit 19 and reaches the rotary shaft hole 11 of the control board 10, and a part of the water is diverted to the working water supply conduit 8 of the casing 1 and flows to the opposite side. and is enclosed within the inner cylindrical portion 4. Therefore, when the impeller 3 is rotated, the working water forms a reflux within the inner cylindrical portion 4 of the casing, and a so-called crescent-shaped gas flow path is formed between the reflux and the impeller 3, causing the rotation to proceed. It is divided into intake, compression, and exhaust air chambers in the direction, and the intake gas is sent to the pump intake port 2.
Through 9, a part of the air enters the air intake space of the cover 21,
The other part passes through the intake flow path 6 to the cover 2 on the opposite side.
1 into the intake space, and further into the control plates 10, 10.
The impeller 3 passes through the intake openings 14, 14 bored in the
The air is sucked into the intake side of the air chamber inside.

The sucked gas is pushed from the intake side of the air chamber to the compression side, and after a certain degree of compression is achieved, the gas is communicated with the compression side through an exhaust opening 15 formed in the control plates 10, 10.
15 into a discharge space separated from the intake space in the covers 21, 21, and an exhaust flow path 7.
After merging with the air from the pump, it is exhausted from the pump exhaust port 30 of the cover 21 to the outside of the pump.

As described above, in the present invention, the casing structure is composed of the inner cylinder part 4 and the outer cylinder part 5, and furthermore, between the inner cylinder part 4 and the outer cylinder part 5, there is an intake flow path 6, an exhaust flow path 7, A working water supply channel 8 is provided, and the overall shape of the casing 1 is made into a cylindrical shape or a substantially cylindrical shape close to it, and the control plate 10, cover 21, and bearing part 33 are installed on the side in a spigot type while maintaining a concentric arrangement. Because it is a type of pump, it has a simpler external shape than conventional integrated casing type pumps, and
The intake and exhaust manifolds 115 and 116 for separating or merging the intake and exhaust air, which were required in conventional cylindrical casing type pumps, are no longer required, resulting in a compact design that is smaller in size and weight compared to pumps with the same capacity. It can be used as a pump. In addition, a water conduit 19 is provided in the control board 10, and the rotation shaft hole 1
By replenishing working water from 1, the impeller 3
Working water is always present between the control plate 10 and the rotary shaft, which not only improves the sealing performance, but also enables uniform replenishment of the inner cylinder 4. Furthermore, the working water travels along the rotating shaft and reaches the shaft sealing part 17. This also has the effect of improving the sealing and lubrication of the shaft seal portion 17. And control board 1
0 and the cover 21 are formed into a circular shape with an outer diameter that substantially matches the outermost diameter of the casing 1, and a concentric regular circumference that can be fitted to the outer circumferential end of the casing 1 is formed on one side of the outer circumference of the control plate 10. A step portion 31 is formed on the other side of the outer periphery, and a step portion 31a is associated with a concentric step portion 31b formed at the outer peripheral end of the cover 21.
casing 1, control board 10
When the cover 21 and cover 21 are sequentially installed on the side, the control board 10
Not only does the outer periphery of the control board 10 appear outside, making it possible to delicately set the position of the control board 10, but if the covers 21, 21 located on both sides are tightened and fixed, the casing 1, the control board 10, and the control board 10 can be easily set. and cover 21 can be tightened with equal tightening force.

In the present invention, the diameter of the circumferential step portions 31, 31a, 31b for the spigot type combination is larger than that of the conventional integrated casing type step portion, which is equivalent to the outer diameter of the impeller. Control board/
Since the outer diameter of the cover also increases, it gives the impression that the weight increases at first glance, but in reality, the casing 101 and cover 107 of the conventional integrated casing type
The large flange portion 108 between the cover 107 and the control plate 106 is no longer required, the overall weight is reduced, and the machining time is correspondingly reduced.
Furthermore, compared to the cylindrical casing type, the weight and processing of the connecting portion between the intake/exhaust manifolds 115 and 116 and the cover 107 is not required, and the casing 101
Because half of it is double, distortion is less likely to occur,
This allows the wall thickness to be reduced. In this way, the weight of the material can be reduced, which is particularly advantageous for pumps made of high-quality materials such as stainless steel, which are durable against rust and slurry, and the processing time can also be shortened.

Furthermore, compared to the conventional integrated casing type, there are also advantages in casting due to the simpler shape. The number of sand molds is reduced, the cost of wooden molds and molds is reduced, sand removal work becomes easier, and the flow of the molten metal during casting is improved, reducing the defective rate.

The most superior point of the conventional integrated casing type over the cylindrical casing type is that eccentric machining is performed at one location on the inner peripheral surface of the casing 101, but the structure of the present invention has the same advantage. be.

However, in the conventional integrated casing type, eccentric machining of the inner circumferential surface is somewhat difficult because there are flange portions 108 at both ends with a diameter smaller than the diameter of the inner circumferential surface and into which the control plate 106 is fitted. In addition, it was not easy to inspect the finishing accuracy of eccentric machining. However, according to the casing 1 used in the present invention, both the eccentric circles of the inner cylindrical part 4 and the outer cylindrical part 5 appear directly on the end face of the casing 1, so that during machining and inspection, one is used as a reference and the other is measured. It will be easier if you increase the eccentricity by doing this. A more important advantage of the present invention over conventional integrated casing types in terms of machining is that in order to finish the sliding surface gap as designed, machining accuracy in the axial length direction of the casing 1 and impeller 3 is required. All you have to do is raise it. That is, the gap between the casing 1 side end surface and the impeller 3 side end surface is constant, and even if a dimensional error occurs in the thickness of the control plate 10 or the cover 21 due to machining, it will not affect the gap between the sliding surfaces. It will no longer be something that gives you something. In this regard, as mentioned above, in the conventional integrated casing type, a total of six parts, two control plates 106 and 106 and two covers 107 and 107, are machined in the axial length direction with high precision. Must be. Since the tolerances for the final finished dimensions are the same, it is possible to set tolerances that are approximately three times as large for a combination of two parts as compared to a combination of six parts, and this is a huge advantage in terms of lathe machining accuracy for the pump's main parts. This results in a significant reduction in processing time.

In addition, the pump can be assembled simply and accurately, just like the conventional comprehensive casing type, since all the pumps are assembled using a spigot type combination using concentric circumferential steps.
The steps are to attach the cover 107 to the cover 107 with bolts (the head of this bolt is on the impeller side), and then attach the cover 107 to the casing 101 with bolts.
In the structure of the present invention, the casing 1 and the control plate 10 are sandwiched between the covers 21 on both sides and tightened with connecting bolts, which makes it simpler. Furthermore, there is no danger of the bolt head being located on the impeller 3 side.

Next, regarding the connection between the pump and its surroundings, in the structure of the present invention, the pump intake port 29, the pump exhaust port 30, and the pump leg 28 can be installed either in the casing 1 or in the cover 21. Such a thing is impossible with the conventional circular casing type, and although it is not impossible with the integrated casing type, the shape is distorted and has no practical commercial value.

In the present invention, the outer shape of the casing 1, control plate 10, and cover 21 when assembled is approximately cylindrical, and the center thereof coincides with the rotation axis, and the advantage of this shape is exhibited when the pump is made vertical. . Conventional cylindrical casing types and integrated casing types are only horizontal types, and their shapes are unstable for vertical types. In a vertical type, the vibration conditions are much worse than in a horizontal type, and since the cover 21 of the structure of the present invention is large and has a substantially bowl shape that coincides with the rotation axis, in a vertical type (in that case, the shaft seal/bearing part is more The connection between the pump and the floor and the connection between the pump and the motor above the pump can also be easily modified so that connection members with an earthquake-resistant structure can be attached.

[Brief explanation of the drawing]

Fig. 1 is a central cross-sectional view of the one-operating-side air-port water ring pump of the present invention, and Fig. 2 shows the right half of the pump.
A vertical cross-sectional view of the pump in the direction of the rotational axis, with the left half taken along the line B--P-C in FIG. 1, FIG. 3 is a front view of the cover side of the control board, and FIG. 5 is a central cross-sectional view showing the principle of the casing structure of the one-operating-side air-port water ring pump of the present invention; FIG. 6 is a central cross-sectional view of a conventional cylindrical casing type pump; FIG. The figure is a sectional view taken along line G-G in figure 6, figure 8 is a central cross-sectional view of a conventional integrated casing type pump, and figure 9 is a right half of the pump shown in figure 8 D-P-E.
FIG. 8 is a longitudinal cross-sectional view in the direction of the rotational axis, with the left half taken along the line FPE in FIG. 8; 1... Casing, 2... Rotating shaft, 3... Impeller, 4
...Inner cylinder part, 5...Outer cylinder part, 6...Intake channel, 7...Exhaust channel, 8...Supplementary waterway, 9...Dividing wall, 10...Control plate, 11...Rotating shaft hole, 12...Intake port, 13 ...Discharge port, 14...Intake opening, 15...Exhaust opening, 16...Supplementary waterway opening, 17...Shaft seal, 18...Dividing wall, 19
...Conduit, 20...Reinforcement rib, 21...Cover, 22
...rotating shaft hole, 23...supply port, 25...connection bolt,
26... Bolt hole, 27... Bolt hole seat, 28... Support leg, 29... Pump intake port, 30... Pump exhaust port,
31...Step part, 31a, 31b...Step part, 32...Bearing, 33...Bearing part, 101...Casing, 102
...Intake flow path, 103...Exhaust flow path, 104...Rotating shaft, 105...Impeller, 106...Control board, 107...
Cover, 108...flange part, 109...intake port,
110...Exhaust port, 111...Intake port, 112...Discharge port, 113, 113a...Pump intake port, 114,
114a...Pump intake port, 115...Intake manifold, 116...Exhaust manifold, 117...Support leg.

Claims (1)

[Scope of Claims] 1. A cylindrical inner cylinder part in which a double-blade type impeller is installed eccentrically, and an integral external part with respect to the inner cylinder part, the size of which is equal to the inner diameter of the inner cylinder part. A cylindrical or approximately cylindrical outer cylinder having an inner diameter equal to the distance obtained by subtracting the impeller diameter from the inner diameter of the inner cylinder, and whose center coincides or substantially coincides with the center of the rotation axis of the impeller. Further, an intake flow path, a working water supply channel, and an exhaust flow path are formed between the inner cylinder part and the outer cylinder part, and both outer circumferential ends of the outer cylinder part form a perfect circumference. a casing, and a stepped portion having a perfect circumference is formed on one side of the outer circumferential end of the disc-shaped body having an outer diameter substantially equal to the outermost diameter of the casing, in association with the shape of the outer circumferential end of the casing; Forming a stepped part with a perfect circumference at the outer peripheral end,
Further, a double partition wall is provided so as to have a space containing a shaft hole provided in the center and serving as a water conduit in the diametrical direction, dividing the space into an intake side and an exhaust side, and communicating the space with the supply waterway. At the same time, an intake opening and an intake port are provided on the intake side that communicate with the intake flow path and the inner cylinder portion, respectively, and an exhaust opening and a discharge port are provided on the exhaust side that communicate with the exhaust flow path and the inner cylinder portion, respectively. a control plate formed of a substantially bowl-shaped body having an outer diameter substantially equal to the outermost diameter of the casing; A shaft sealing section is provided at the center concentrically with the section, a partition wall is provided at a position corresponding to the partition wall provided on the control plate for sealing, a replenishment port is provided at a position corresponding to the replenishment waterway opening, and a replenishment port is provided at the outer periphery. A cover provided with an appropriate number of bolt holes, and a concentric stepped portion provided on the outer surface of the cover,
a bearing part having a concentric stepped part that can be fitted together; the casing, control plate and cover are fitted together in a spigot manner at the coaxial stepped part, and then tightened with a bolt inserted into the bolt hole seat; 1. A one-operating-side air-port type water ring pump, in which the stepped portion of the bearing portion is provided sideways to the stepped portion of the outer surface of the cover in a spigot type. 2. The one-actuation-side air-port type water ring according to claim 1, wherein the cover is a cover provided with a pump intake/exhaust port at a position communicating with the intake port and discharge port of the control board, respectively. pump. 3. The single-acting-side air-port water ring pump according to claim 1, wherein the casing is a casing provided with pump intake and exhaust ports at positions communicating with the intake flow path and the exhaust flow path, respectively. .