JP2646324B2 - Land pump - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a land-based pump that operates a pump unit by a motor unit and sends out liquid flowing into an inlet of the pump unit from an outlet of the pump unit.

[0002]

2. Description of the Related Art Conventionally, the above-mentioned on-land pump has a motor section and a pump section which are exposed to the air. When electric power is supplied to the motor unit of the land pump and the pump unit is operated, the rotating blades of the pump unit rotate, so that the pump unit pumps the liquid flowing into the inflow port by the rotating blades and sends it out of the outflow port. The heat released by the operation of the motor unit is radiated to the atmosphere around the motor unit.

[0003]

Since the conventional land-based pump is of the air-cooled type as described above, the motor casing is made of a heat conductor to efficiently dissipate the heat released by the operation of the motor. In addition, cooling fins are provided in the motor casing, and a large number of ventilation holes for heat radiation are provided in the motor casing. Therefore, it is necessary to secure a heat radiation space for circulating the air around the land pump to dissipate the heat of the motor unit, so that the installation space becomes large and the space cannot be used effectively. Also, in order to shield the operating noise of the motor from leaking to the outside, for example, even when trying to cover the land pump with a soundproof box, heat is accumulated in the soundproof box, and the above-mentioned heat dissipation space is secured. Considering the necessity, it is difficult to provide compact and effective soundproofing measures.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned inconveniences, and the installation space is small, the space can be effectively used, and compact and effective soundproofing can be easily performed. An object of the present invention is to provide a land-based pump that can be formed into a rod shape and housed in a wall or the like.

[0005]

A land pump according to the present invention comprises a motor shaft of a motor section and a pump of a pump section.
The motor casing of the motor unit with the same shaft as the shaft
Water between the pump and the pump casing of the pump section
Densely configured, providing an inlet or outlet on this intermediate wall,
At least the motor cylinder constituting the motor casing constituted by a good heat conductor, the outer circumferential disposed on, the inlet of the pump portion at one end of the flow path of the motor cylinder a passage tube to form a liquid flow path with the motor cylinder Or connect to the outlet of the pump
In addition, an intermediate wall that faces the motor cylinder and the flow path body
And the watertight motor end wall that constitutes the motor casing
It was fixed with bolts .

[0006] Then, the bolts are arranged on the inner periphery of the channel tube,
Opposite across the pump cylinder that constitutes the pump casing
An intermediate wall and a pump end wall constituting a pump casing
Place the fixing bolt on the inner circumference of the pump cylinder,
Motor end wall forming the motor casing facing the motor end wall
The water flow path end wall is formed outside the motor end wall.
The other end of the flow path formed on the end wall of the flow path
The outlet or the inlet is located on the extension of both shafts
I do. Further, the flow tube and the pump tube are integrally formed.

[0007]

[0008]

In the land pump according to the present invention, the liquid flowing through the flow path formed around the motor section serves as a heat release medium, and the liquid carries and discharges the heat from the motor section. Then, by making the portion of the flow path body facing the motor cylinder into a tubular shape and allowing the liquid to flow over substantially the entire outer periphery of the motor section, the flow path body and the liquid exhibit a soundproof function.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a configuration of a land pump according to a first embodiment of the present invention, FIG. 2 is a right side view of the land pump shown in FIG. 1, FIG. 3 is a cross-sectional view taken along line CC of FIG. 4 is a right side view showing the left half of the motor end wall constituting the land pump of FIG. 1, and FIG. 5 is a right side view of the left half showing the shape of the seal packing (13) constituting the land pump of FIG. 1 corresponds to a section taken along the line AOB of FIG.

In these figures, reference numeral 1 denotes a shaft, a motor shaft 1m and a pump shaft 1p.
Are formed in a single shape. Reference numeral 2 denotes a bearing, which is attached to each end of the motor shaft 1m. Reference numeral 3 denotes an intermediate wall through which the shaft 1 penetrates, and a thermal conductor for supporting the shaft 1 via the bearing 2, a motor-side intermediate wall 3m, a pump-side intermediate wall 3p, and both intermediate walls made of plastic or a composite material. The seal packing 3s is sandwiched between 3m and 3p. The motor-side intermediate wall 3m is provided with a ventilation hole 3mha through which air is circulated or a wire is inserted, and a circulation hole 3mhb through which liquid flows, and both holes 3mha and 3mhb extend in the circumferential direction. In this case, four places are provided alternately.
The pump-side intermediate wall 3p is provided with four radially located inlets 3ph communicating with the flow holes 3mhb.

Reference numeral 4 denotes a motor end wall facing the intermediate wall 3, which is made of a good conductor, plastic or composite material,
One end of the shaft 1 is supported via the bearing 2. Then, the motor end wall 4 or by circulating air, and vent 4ha for inserting the wire, is formed radially, and a recess 4 g of the liquid flows, a flow hole 4hb communicating with the outer edge to the recess 4 g It is provided, (including flow holes 4HB) vents 4ha and recesses 4 g in the circumferential direction, are provided by four positions alternately.

Reference numeral 5 denotes a rotor core fixed to the motor shaft 1m, 6 denotes an end ring fan formed on the rotor core 5, 7 denotes a stator core surrounding the rotor core 5 with a predetermined gap, 8 Denotes a stator winding wound around the stator core 7. Reference numeral 9 denotes a motor cylinder, which is composed of a good heat conductor. A stator core 7 is fixed inside, and both open ends are closed by contacting the motor-side intermediate wall 3m and the motor end wall 4 via seal packings 10. ing. The motor casing is
Motor side intermediate wall 3m, motor end wall 4 and motor cylinder 9
It is composed of

Reference numeral 11 denotes a flow channel tube, which is made of a good conductor, plastic or composite material, and whose open ends are closed by being in contact with the motor-side intermediate wall portion 3m and the motor end wall 4 via the seal packing 12. I have. One end of the annular flow path formed by the two cylinders 9 and 11 communicates with the circulation hole 3mhb, and the other end of the annular circulation communicates with the circulation hole 4hb. Reference numeral 13 denotes a seal packing, and the motor end wall 4
Is in contact with the outer edge of the outer surface. Reference numeral 14 denotes a flow path end wall made of a thermal conductor, plastic, or a composite material, which abuts on the motor end wall 4 via the seal packing 13 and receives the water inlet pipe Ti.
Is formed on an extension of the shaft 1 and communicates with a recess 4 g of the motor end wall 4.
The flow path body is composed of the flow path cylinder 11 and the flow path end wall 14.

Reference numeral 15 denotes a mechanical seal for making the pump shaft 1p and the pump-side intermediate wall 3p watertight. Reference numeral 16 denotes a pump end wall facing the intermediate wall 3, and a water outlet 16 as an outlet to which the water outlet pipe To is connected.
h is formed on an extension of the shaft 1. Reference numeral 17 denotes a pump rotary blade, into which the pump shaft portion 1p is inserted and fixed by a nut 18 screwed to the other end of the shaft 1.

Reference numerals 19A, 19B, and 19C denote pump guide blades, and reference numeral 20 denotes a pump cylinder into which the pump guide blades 19A, 19B, and 19C are fitted. The wall 3p abuts on the pump end wall 16 and is closed. The pump casing includes a pump-side intermediate wall 3p, a pump end wall 16, and a pump cylinder 20. 22
Indicates bolts, the intermediate wall 3, the motor end wall 4 , the flow path end wall 1
4 and the pump end wall 16. Reference numeral 23 denotes a nut that is screwed to the bolt 22. M is the motor, P
Indicates a pump unit.

Next, the operation will be described. First, when the stator core 8 of the motor section M is energized to rotate the rotor core 5 and the motor shaft section 1m, the pump shaft section 1p also rotates, so that the pump rotating blade 17 also rotates.
When the pump rotating blade 17 rotates, the water inlet pipe Ti
As a liquid flowing into the water inlet 14ha from the water, a flow path composed of the concave portion 4g, the flow hole 4hb, the two cylinders 9 and 11,
After passing through the circulation hole 3mhb, the pump P
And flows out from the outlet 16h to the outlet pipe To.

When electric power is supplied to the motor section M for operation, heat is generated when electric energy is converted into kinetic energy. The heat is generated by water flowing through the flow path through the motor cylinder 9. And is dissipated, and is radiated out of the motor unit M by air flowing in and out through the ventilation holes 3mha and 4ha.

Therefore, the heat of the motor section M can be effectively dissipated without taking special cooling measures, so that there is no need to provide a heat dissipation space around the motor section M, so that the installation space is reduced and the space is reduced. It can be used effectively. Water flows around substantially the entire outer periphery of the motor casing, and the outside of the motor cylinder 9 is
1 and the outside of the motor end wall 4 is covered with the flow path end wall 14, so that the motor section M does not need to be covered with a soundproof box or the like.
Demonstrate the soundproof effect of reducing the operating noise of

Furthermore, since there is no need to secure a space for heat radiation around the device, it is possible to house the device in a compact soundproof box, for example, in order to shield the operation noise from leaking to the outside. Soundproofing measures can be easily taken. And the installation space is small, and the water inlet 14ha and the water outlet 16h are connected to the shaft 1
Since it is arranged on the extension of the above, it can be formed into a rod shape, that is, thin, so that it can be housed in a compact box or in a wall. In addition, motorshaft
Motor cylinder 9 disposed concentrically with respect to
An intermediate wall 3 opposed to the flow path cylinder 11 and a motor end wall 4
And the flow path end wall 14 with bolts 22 and nuts 23.
By fixing, the motor part M can be assembled.
As a result, the assembly and disassembly of the motor section M is simple and easy.
It can be done easily. Note that no dew condensation occurs in the motor section M.

FIG. 6 is a sectional view showing the construction of a land pump according to a second embodiment of the present invention, FIG. 7 is a right side view of the land pump shown in FIG. 6, and FIG. It corresponds to the cross section of the E line. Note that the same or corresponding parts as those in FIGS. 1 to 5 are denoted by the same reference numerals, and description thereof is omitted.

The land pump of the second embodiment is different from the land pump of the first embodiment in that the ventilation hole 4ha of the motor end wall 4 is formed in parallel with the shaft 1 so that it can pass in parallel with the shaft 1. The point is that a vent hole 14hb communicating with the pore 4ha is formed in the flow path end wall 14. The operation and operation of the second embodiment are the same as those of the first embodiment, and the same effects as those of the first embodiment can be obtained in the second embodiment.

FIG. 8 is an upper sectional view showing the configuration of a land pump according to a third embodiment of the present invention, and FIG. 9 is an upper side surface showing main parts of an intermediate wall and a motor end wall which constitute the land pump shown in FIG. FIG. 8 corresponds to a section taken along line FF of FIG.
Note that the same or corresponding parts as those in FIGS. 1 to 7 are denoted by the same reference numerals, and description thereof is omitted. 8 and 9 are configured symmetrically with the upper side.

8 and 9, reference numeral 3A denotes an intermediate wall, in which a ventilation hole 3ha and a flow hole 3hb corresponding to one end of the flow path and the inlet of the pump portion P are arranged in a circumferential direction, in this case, alternately. Are provided at six locations. Reference numeral 4A denotes a motor end wall, and the motor end wall 4a and the motor end wall 4a
Packing 4b contacting the outside of the motor, and a closing plate 4c contacting the motor end wall portion 4a via the sealing packing 4b.
And a bolt 4 for fixing the closing plate 4c to the motor end wall 4a.
d. The motor end wall 4a is provided with two holes 4ha, 4hb in the circumferential direction, in this case, alternately in six places. 22A and 22B are bolts, 24 is a seal packing, and 25 is a flange nut.

The main difference between the land pump of the third embodiment and the land pumps of the first and second embodiments is that the bolt 22A is located on the inner periphery of the flow tube 11 and the bolt 22B is located on the pump. This is a point located on the inner circumference of the cylinder 20. The operation and operation of the third embodiment are the same as those of the first and second embodiments, and the same effects as those of the first embodiment can be obtained in the third embodiment. Further, bolts 22A, 22
Since B is located on the inner circumference of the flow channel cylinder 11 and the pump cylinder 20, there is almost no unevenness on the outer peripheral surface, so that it can be simply and effectively stored in a box or the like, and further soundproofed. it can.

FIG. 10 is a partial sectional view showing the structure of a land pump according to a fourth embodiment of the present invention. The same or corresponding parts as those in FIGS. In FIG. 10, reference numeral 11A denotes a flow channel tube, which is made of a good heat conductor, plastic, or a composite material, and in which a pump tube is integrated.

The operation and operation of the fourth embodiment are the same as those of the first embodiment.
This is the same as the third to third embodiments, and the fourth embodiment can obtain the same effects as those of the first and third embodiments. Further, since the pump cylinder is integrally formed with the flow path cylinder 11A, an increase in the number of parts can be suppressed.

In each of the above embodiments, the wiring of the motor section M may be inserted through any of the ventilation holes 3mha, 3ha, and 4ha, and water may flow in the opposite direction. In addition, the motor end walls 4 and 4A are configured to be watertight, and the flow path is formed on substantially the entire outer periphery of the motor unit M. However, when only the heat of the motor unit M is intended, the outer periphery of the motor unit M may be used. The object can be achieved even if a flow path body is provided so as to cover a part of the flow path. In this case, since it becomes possible to seal, compact and effective soundproofing measures can be easily and easily taken. Further, although the motor end walls 4 and 4A and the flow path end wall 14 are configured separately, they may be formed integrally.

[0028]

As described above, according to the present invention, at least the motor cylinder of the motor section is made of a good heat conductor, and the flow path cylinder forming the liquid flow path together with the motor cylinder is arranged outside the motor cylinder. Since one end of the flow path is connected to the inflow port of the pump section or the outflow port of the pump section, the heat generated in the motor section is transferred to the liquid flowing through the flow path via the motor cylinder, conveyed, and released. You. Therefore, the heat of the motor can be effectively dissipated without taking any special cooling measures, so that there is no need to provide a space for heat dissipation around the periphery, so the installation space is reduced and the space is effectively used. be able to.

Further, since there is no need to secure a space for heat radiation around the device, it is possible to house the device in, for example, a compact soundproof box for shielding operation noise from leaking to the outside. Soundproofing measures can be easily taken. And for the motor shaft
Opposed across the concentrically arranged motor cylinder and flow path cylinder
Bolts between the intermediate wall, the motor end wall, and the flow path end wall
The motor can be assembled by fixing with
Easy and easy to assemble and disassemble the motor
Can be done. Furthermore, since the motor part and the pump part are configured to have the same axis, and the other end of the flow path and the outlet or the inlet of the pump are arranged on an extension of the motor shaft and the pump shaft, the rod shape, that is, the thin shape. Therefore, it can be housed in a compact box or in a wall.

Since the liquid flows substantially all around the motor casing, the outside of the motor cylinder is covered with the flow path cylinder , and the outside of the motor end wall is covered with the flow path end wall.
Even if it is not covered with a soundproof box or the like, the soundproof effect of reducing the operating noise of the motor unit is exhibited. Also, the intermediate wall and the motor end wall,
Since the bolts that fix the intermediate wall and the pump end wall are located on the inner circumference of the flow channel cylinder and pump cylinder, there is almost no irregularities on the outer peripheral surface, making it easy to store in a box or take other soundproof measures. , And effectively. Further, since the flow channel tube and the motor tube are integrally formed, an increase in the number of parts can be suppressed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of a land pump according to a first embodiment of the present invention.

FIG. 2 is a right side view of the land pump of FIG.

FIG. 3 is a sectional view taken along line CC of FIG. 1;

FIG. 4 is a right side view showing a left half of a motor end wall constituting the land pump of FIG. 1;

FIG. 5 is a right side view of a left half showing a shape of a seal packing constituting the land pump of FIG. 1;

FIG. 6 is a sectional view showing a configuration of a land pump according to a second embodiment of the present invention.

FIG. 7 is a right side view of the land pump of FIG. 6;

FIG. 8 is an upper sectional view showing a configuration of a land pump according to a third embodiment of the present invention.

FIG. 9 is a side side view showing an upper main part of an intermediate wall and a motor end wall constituting the land pump of FIG. 8;

FIG. 10 is a partial sectional view showing a configuration of a land pump according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 shaft 1m motor shaft part 1p pump shaft part 2 bearing 3, 3A intermediate wall 3m motor side intermediate wall part 3mhb, 3hb communication hole 3p pump side intermediate wall 3ph inflow port 3s seal packing 4, 4A motor end wall 4hb communication hole 4a Motor end wall 4b Seal packing 4c Closure plate 4d Bolt 5 Rotor core 7 Stator core 8 Stator winding 9 Motor cylinder 10, 12, 13 Seal packing 11, 11A Flow path cylinder 14 Flow path end wall 14ha Water inlet 15 Mechanical seal 16 Pump end wall 16h Water outlet 17 Pump rotating blade 18 Nut 19A, 19B, 19C Pump guide blade 20 Pump cylinder 21, 24 Seal packing 22, 22A, 22B Bolt 23 Nut 25 Flange nut M Motor part P Pump part Ti person Water pipe To outflow pipe

Claims (4)

(57) [Claims] 1. A land pump in which a pump section is operated by a motor section and a liquid flowing into an inlet of the pump section is sent out from an outlet of the pump section, wherein a motor shaft of the motor section and a pump of the pump section are provided.
The motor case of the motor unit is formed with the shaft being the same axis.
And the pump casing of the pump section
The intermediate wall is watertight, the intermediate wall is provided with the inflow port or the outflow port, at least the motor cylinder constituting the motor casing is formed of a good heat conductor, and the liquid channel is formed together with the motor cylinder. It arranged the flow path cylinder <br/> outside periphery of the motor cylinder, to connect one end of the flow path to the inlet or the outlet
The motor cylinder and the flow path body,
Watertight motor constituting the motor casing and the wall
A land pump characterized in that the end wall and the end wall are fixed with bolts . 2. The land pump according to claim 1, wherein the bolts are arranged on an inner periphery of the flow path cylinder, and are opposed to each other across a pump cylinder constituting the pump casing.
The intermediate wall and the pump constituting the pump casing.
A bolt for fixing the pump end wall is provided on the inner periphery of the pump cylinder.
A land-based pump characterized by being placed . 3. The land pump according to claim 1, wherein the motor casing faces the intermediate wall.
A motor end wall configured to be watertight; a flow path end wall disposed outside the motor end wall in a watertight manner; the other end of the flow path formed in the flow path end wall;
Alternatively, the inlet and the inlet are arranged on an extension of the shafts.
Land pump that was, characterized in that. 4. The land pump according to any one of claims 1 to 3, and the pump cylinder and the channel tube is configured integrally land pump, characterized in that.