JP5495137B2 - Lubricating method and lubricating device for filter plate in filter press - Google Patents

Description

The present invention relates to a filter plate lubrication method and a lubrication apparatus in a filter press in which a large number of filter plates arranged in parallel on a side rail are moved simultaneously in all chambers.

2. Description of the Related Art Conventionally, filter presses in which a large number of parallel filter plates are slidably moved on the left and right side bars to open and close the filter plates and peel the cake are well known. Cited Document 1 discloses a configuration in which a slide member for smoothing back-and-forth movement of the filter plate is fitted on each lower edge portion of a suspension projecting from the left and right side edge portions of the filter plate.

JP-A-8-281015

In order to smoothly move the filter plate placed on the side bar, it is necessary to form the sliding portion with a low frictional resistance member or supply a lubricant for reducing the frictional resistance to the sliding portion.
If the sliding part is composed of a low friction resistance member, it may be applicable to small filter presses with light filter plates, but it has two functions: strength and low friction for large filter presses with heavy filter plates. Is necessary and costly. In addition, there is a problem that the filter plate does not move smoothly due to foreign matters generated in the field atmosphere where the filter press operates and adheres to the sliding portion.
In addition, if oil or grease such as grease is supplied to the sliding part as a lubricant, the frictional resistance is reduced and foreign matter generated by the field atmosphere is difficult to adhere, but the oil and grease is scattered during handling, increasing the environmental load. . Since it is necessary to purchase regularly, it is expensive and it is necessary to secure a storage place.

The present invention provides a method and apparatus for lubricating a filter plate in a filter press that uses water as a lubricant for a sliding portion in order to move a large number of parallel filter plates on a side rail.

In the filter press of the present invention, the filter plate is lubricated by arranging a large number of filter plates in parallel on a pair of side rail slide plates, connecting the filter plates with connecting links, and simultaneously opening the filter plates with a tightening cylinder. In the simultaneous open plate type filter press, the level of the lubricating water stored in the lubricating water tank is maintained above the sliding surface of the slide plate, and when the filter plate is moved, the slide plate and the lubricating water tank are communicated with each other. Lubricating water is supplied to the sliding surface of the slide plate by water pressure, and the sliding portion of the industrial equipment can be smoothly lubricated without increasing the environmental load. Further, since the lubricating water is supplied to the sliding surface only when the filter plate is moved, it can be slid with the minimum necessary amount.

The filter plate lubrication device in the filter press of the present invention has a large number of filter plates arranged in parallel on a pair of side rail slide plates, each filter plate is connected by a connecting link, and the filter plates are simultaneously opened by a tightening cylinder. In the simultaneous open plate type filter press, a lubricating water tank for storing the lubricating water supplied by the water feeding device is attached to the side rail, and a water level detecting device for detecting the water level of the lubricating water tank is provided to slide the water level of the lubricating water tank. A detection device that maintains the upper and lower sides of the sliding surface of the plate and detects the opening and closing of the filter plate, and a control device that supplies lubricating water in the lubricating water tank to the sliding surface of the slide plate by detecting the opening and closing of the opening and closing plate The operation of each component can be detected and lubricating water can be supplied to the sliding portion when necessary.

In addition, a groove is formed at the lower edge of the slide plate, a plurality of lubricating holes penetrating to the sliding surface of the upper edge are formed in the groove, and a lubricating water channel for supplying lubricating water from the lubricating water tank to the groove is arranged. Since it is provided, the lubricating water can be simultaneously supplied to the sliding surface in conjunction with the water level of the lubricating water tank.
Furthermore, if a drain pipe equipped with a valve is installed in the lubricating water tank, and the level of the lubricating water stored in the lubricating water tank is maintained slightly above the sliding surface, the water level of the lubricating water tank can be lowered and the high water pressure Thus, all the lubricating water leaking out can be supplied to the sliding surface without the lubricating water being ejected from the lubricating holes and scattered around.

The lubricating water tank is divided into a storage tank and a discharge tank by a partition plate, the lubricating water is stored in the storage tank by a water supply device, and a lubricating water channel for supplying the lubricating water to the sliding surface of the slide plate is connected to the storage tank. When the lubricating water is supplied to the sliding surface of the slide plate by the water pressure of the storage tank, the upper limit level of the lubricating water stored in the lubricating water tank can be easily maintained within a certain range.

The filter plate lubrication method and the lubrication apparatus in the filter press according to the present invention are configured as described above, and supply the lubricating water to the sliding surface only when the filter plate is moved. . Moreover, since the lubricant is water, the oil and fat is not scattered to the outside, and the environmental load can be reduced. Easy handling during disassembly and maintenance.

1 is a schematic side view of a filter press having a filter plate lubricating device according to the present invention. Similarly, it is a schematic plan view of a filter press. Similarly, it is a front view of a filter plate. Similarly, it is a principal part perspective sectional view of a side rail. Similarly, it is sectional drawing of the slide plate arrange | positioned at the side plate. Similarly, it is the schematic of a lubrication apparatus. Similarly, it is the schematic of the other Example of a lubricating device.

A filter press lubrication method and lubrication apparatus of a filter press according to the present invention will be described in detail with reference to the drawings. First, FIG. 1 is a schematic side view of a filter press according to the present invention. A pair of side rails 3, 3 is bridged on the rear frame 2, and a large number of filter plates 4 are supported on the side rails 3, 3 so as to be freely opened and closed. A movable head 5 is disposed between the rear frame 2 and the filter plate 4, and the movable head 5 is coupled to a tightening cylinder 6 disposed on the rear frame 2. The movable head 5 and the filter plates 4... Are simultaneously opened at a predetermined interval determined by the connecting link 7.

FIG. 2 is a schematic plan view of the filter press, wherein (a) shows when the filter plate is closed, and (b) shows when the filter plate is opened. The filter plate 4 is closed by extending the tightening cylinder 6 and pressing the movable head 5 toward the front frame 1, and if the stock solution is supplied between the closed filter plates 4, 4, the filtrate is filtered ( It passes through (not shown) and is discharged to the outside. The solid matter captured by the filter cloth is dehydrated while forming a cake layer. After dehydration, the clamping cylinder 6 is contracted and the movable head 5 is moved in the direction of the rear frame 2 to open the filter plate 4.
The filter plates 4 in parallel may be ones in which filter plates and diaphragm plates are alternately arranged in parallel.

FIG. 3 is a front view of the filter plate. The filter plate arms 8 and 8 project from the side surface of the filter plate 4 and are slidably mounted on the side rails 3 and 3, respectively. ing. A liner 9 and a slide plate 10 are disposed on the sliding portions of the filter plate arm 8 and the side rail 3, respectively.
In this embodiment, a sliding member is disposed on the filter plate arm 8 projecting from the side surface of the filter plate 4, but the filter plate 4 is suspended from above and the suspension member is slid. Also good. Further, a sliding member may be disposed directly on the filter plate 4 and slid.

FIG. 4 is a perspective cross-sectional view of the main part of the side rail, and the slide plate 10 is fitted in the concave groove 11 formed in the upper end surface of the side rail 3. A groove portion 12 is provided at the lower edge portion of the slide plate 10 and communicates with the sliding surface 10a at the upper edge portion of the slide plate 10 through a plurality of lubricating holes 13. Further, the groove portion 12 communicates with the lubricating water channel 14, and the lubricating water supplied from the lubricating water channel 14 stays in the groove portion 12 and is supplied to the sliding surface 10a all at once through the lubricating holes 13 as the water level rises. It has become.
In this embodiment, a part of the lubricating water channel 14 is formed in the side rail 3 and communicated with the bottom of the concave groove 11. However, if the lubricating water can be supplied to the groove 12 of the slide plate 10, It is not limited to this embodiment.

FIG. 5 is a cross-sectional view of the slide plate disposed on the side plate. The slide plate 10 is fitted in the groove 11 of the side rail 3 with the surface of the slide plate 10 forming the groove 12 facing down. The groove portion 12 of the slide plate 10 communicates with the lubricating water channel 14, and in this embodiment, a part of the lubricating water channel 14 is formed in the side rail 3, but for example, as shown by the broken line portion, the slide plate 10 is lubricated. A part of the water channel 14 may be formed and communicated to the groove 12.
The sliding surface 10a at the upper edge of the slide plate 10 slides with the liner 9 disposed on the filter plate 4 when the filter plate 4 moves as an opening / closing plate. In order to supply lubricating water as a frictional resistance reducing agent to the sliding surface 10a, a plurality of lubricating holes 13 are provided. The number or the diameter of the lubrication holes 13 can be appropriately selected depending on conditions such as the number of filter plates and the opening plate pitch.

The configuration of the lubricating device 25 will be described in detail with reference to FIG. Lubricating water is supplied to a lubricating water tank 18 through a supply pipe 17 from a water supply device 16 connected to a water source (not shown) such as a water pipe. The lubricating water tank 18 is attached to the side rail 3 and includes a water level detection device 19 for measuring the water level in the tank. The set value of the water level detection device 19 is set above the height of the sliding surface 10a of the slide plate 10 (two-dot difference line). In conjunction with the detection devices D1, D2, D3, D4 that detect the opening and closing of the filter plate 4, the water level in the lubricating water tank 18 is constantly maintained above the sliding surface 10a when the filter plate 4 is moved. It is controlled by the control device 24.
A lubricating water channel 14 is connected to the lubricating water tank 18, and the lubricating water in the lubricating water tank 18 is supplied to the sliding surface 10 a of the slide plate 10 by the water pressure of the stored water through the groove 12 and the lubricating hole 13 of the slide plate 10. To do. Further, a discharge pipe 20 is connected to the lubricating water tank 18, and the valve V1 disposed in the discharge pipe 20 is opened to discharge the lubricating water stored in the lubricating water tank 18 and lower the water level. Can do. Further, valves V2 and V3 are provided in the supply pipe 17 and the lubricating water channel 14, respectively, so that the amount of lubricating water supplied to the sliding surface 10a of the slide plate 10 can be adjusted.
The supply amount of the lubricating water supplied from the lubricating hole 13 depends on the water level of the lubricating water tank 18, and by setting the set value of the water level detecting device 19 slightly above the sliding surface 10a, all the leaking out Lubricating water can be supplied to the sliding surface 10a. When the water level of the lubricating water tank 18 is high, the lubricating water is ejected from the lubricating holes 13 due to the high water pressure and scattered around.

The configuration of the lubricating device 35 of another embodiment will be described in detail with reference to FIG. In the lubricating water tank 30 constituting the lubricating device 35, a partition plate 31 whose upper end is higher than the height (two-dotted line) of the sliding surface 10a of the slide plate 10 is erected, and the lubricating water tank 30 is connected to the storage tank 32. It is divided into discharge tanks 33. When the lubricating water channel 14 is connected to the storage tank 32 connected to the supply pipe 17, and the water level of the storage tank 32 becomes higher than the sliding surface 10a of the slide plate 10, the lubricating water is supplied to the sliding surface 10a by water pressure. it can. When the lubricating water supplied to the storage tank 32 rises to a water level exceeding the upper end of the partition plate 31, it flows into the discharge tank 33. The lubricating water that has overflowed into the discharge tank 33 is discharged. The drainage pipe 20 is connected to the storage tank 32, and by opening the valve V1 disposed in the discharge pipe 20, the lubricating water stored in the lubricating water tank 18 can be discharged and the water level can be lowered. .
By setting the upper end of the partition plate 31 slightly higher than the sliding surface 10a, an appropriate amount of lubricating water can be supplied to the sliding surface 10a.
The storage tank 32 is provided with a water level detection device 19 for detecting the level of the lubricating water, and in conjunction with the detection devices D1, D2, D3, D4 for detecting the opening and closing of the filter plate 4, the filter The control device 24 controls the water level in the storage tank 32 to be kept slightly above the sliding surface 10a at all times when the plate 4 is moved.

<Open plate flow>
A lubricating method when the filter plate 4 is opened will be described in detail with reference to FIG. The opening of the filter plate 4 for discharging the cake of the filter press is started from the contraction operation of the tightening cylinder 6 that detects the end of dehydration. The completion of dehydration may be detected by a well-known technique such as dehydration time or filtrate amount. Further, the clamping cylinder 6 can be operated by a known technique such as hydraulic or electric. During the dehydration process, the valves V1, V2, and V3 are closed.

A. After the dehydration is completed, the control device 24 that has received the signal for starting the plate opening from the detection device D1 operates the water supply device 16 and opens the valve V2 to supply the lubricating water to the lubricating water tank 18.
Here, the water supply device 16 only needs to be able to generate pressure enough to supply the lubricating water to the lubricating water tank 18, and the pressure generated when the tap of the water pipe is opened is sufficient. In this embodiment, the supply pipe is connected to the outlet of a water pipe that is normally open, and no special power is required for the water supply device 16.
Lubricating water may be stored in the lubricating water tank 18 in advance.

B. When the level of the lubricating water stored in the lubricating water tank 18 rises to a predetermined set value, the control device 24 opens the valve V3 based on the signal transmitted from the water level detection device 19. Since the set value of the water level detection device 19 is set above the sliding surface 10 a of the slide plate 10, the lubricating water is supplied to the sliding surface 10 a through the lubricating water channel 14, the groove 12, and the lubricating hole 13 by the water pressure of the stored water. Supplied. By setting the set value of the water level detection device 19 slightly above the sliding surface 10a, the lubricating water is not ejected from the lubricating holes 13 due to the high water pressure and scattered around, so that all the leaking lubricating water is slid. It can be supplied to the moving surface 10a.
Further, when the water level rises beyond a predetermined set value range, the valve V1 provided in the discharge pipe 20 is opened to discharge the lubricating water stored in the lubricating water tank 18 and lower the water level. When the water level in the lubricating water tank 18 falls to the set value range, the valve V1 is closed.
Furthermore, the water supply amount of the water supply device 16 may be adjusted to control the water level of the lubricating water tank 18 within a predetermined set value range.

C. The tightening cylinder 6 is contracted to move the movable head 5 to the rear frame 2 side. The filter plates 4... Connected by the connection link 7 are opened simultaneously at a predetermined interval.
The lubricating water supplied from the supply hole 13 reduces the frictional resistance between the slide plate 10 of the side rail 3 and the liner 9 of the filter plate 4, and allows the filter plate 4 to slide smoothly.

D. The control device 24 that has received a signal to end opening the filter plate 4 from the detection device D2 closes the valves V1, V2, and V3, and stops the operation of the water supply device 16 as necessary.
The completion of opening of the filter plate 4 can be detected by a known technique such as detecting the position of the filter plate 4 or the movable head 5 or increasing the hydraulic pressure of the tightening cylinder 6.

<Closed plate flow>
Similarly, a lubricating method when the filter plate 4 is closed will be described in detail with reference to FIG.

E. After the dehydration cake is discharged and the filter cloth is washed, the control device 24 receives the closing plate start signal from the detection device D3, operates the water supply device 16 and opens the valve V2, and supplies the lubricating water tank 18 with lubricating water. Supply.

F. When the level of the lubricating water stored in the lubricating water tank 18 rises to a predetermined set value, the control device 24 opens the valve V3 based on a signal transmitted from the water level detection device 19.

G. The filter plate 4 is closed by extending the tightening cylinder 6 and pressing the movable head 5 toward the front frame 1.

H. The control device 24 that has received a signal indicating the end of closing the filter plate 4 from the detection device D4 closes the valves V1, V2, and V3, and stops the operation of the water supply device 16 as necessary.
The completion of closing the filter plate 4 can be detected by a known technique such as detecting the position of the filter plate 4 or the movable head 5 or increasing the hydraulic pressure of the tightening cylinder 6.

<Open plate flow>
A lubricating method for opening the filter plate 4 of another embodiment will be described in detail with reference to FIG.

A. After the completion of the dehydration, the control device 24 that has received the signal for starting the plate opening from the detection device D1 operates the water feeding device 16 and opens the valve V2 to supply the lubricating water to the storage tank 32 of the lubricating water tank 30.
Lubricating water may be stored in the storage tank 32 of the lubricating water tank 30 in advance.

B. When the lubricating water supplied to the storage tank 32 rises and flows over the partition plate 31 to the discharge tank 33, the control device 24 opens the valve V3 based on a signal transmitted from the water level detection device 19. Since the upper end of the partition plate 31 is set higher than the sliding surface 10a, when the valve V3 is opened, lubricating water is supplied from the lubricating hole 13 to the sliding surface 10a. When the upper end of the partition plate 31 is set slightly above the sliding surface 10a, the lubricating water is not ejected from the lubricating holes 13 due to high water pressure and scattered around the sliding surface. 10a can be supplied.
Further, when the water level rises beyond a predetermined set value range, the valve V1 provided in the discharge pipe 20 is opened to discharge the lubricating water stored in the storage tank 32 and lower the water level. When the water level in the storage tank 32 falls to the set value range, the valve V1 is closed.
Furthermore, the overflow water level of the storage tank 32 may be controlled by adjusting the water supply amount of the water supply device 16. Further, the upper end height of the partition plate 31 may be controlled by extending or contracting the partition plate 31 up and down.
The lubricating water in the discharge tank 33 is discharged as necessary.

C. The tightening cylinder 6 is contracted to move the movable head 5 to the rear frame 2 side. The filter plates 4... Connected by the connection link 7 are opened simultaneously at a predetermined interval.

D. The control device 24 that has received a signal to end opening the filter plate 4 from the detection device D2 closes the valves V1, V2, and V3, and stops the operation of the water supply device 16 as necessary.
The completion of opening of the filter plate 4 can be detected by a known technique such as detecting the position of the filter plate 4 or the movable head 5 or increasing the hydraulic pressure of the tightening cylinder 6.

<Closed plate flow>
Similarly, a lubricating method when the filter plate 4 of another embodiment is closed will be described in detail with reference to FIG.

E. After the dehydration cake is discharged and the filter cloth is washed, the control device 24 receives the signal for starting the closing plate from the detection device D3, operates the water feeding device 16, opens the valve V2, and stores the lubricating water tank 30. Lubricating water is supplied to 32.

F. When the lubricating water supplied to the storage tank 32 rises to a predetermined water level and overflows from the partition plate 31 to the discharge tank 33, the control device 24 opens the valve V3 based on a signal transmitted from the water level detection device 19. And

G. The filter plate 4 is closed by extending the tightening cylinder 6 and pressing the movable head 5 toward the front frame 1.

H. The control device 24 that has received a signal indicating the end of closing the filter plate 4 from the detection device D4 closes the valves V1, V2, and V3, and stops the operation of the water supply device 16 as necessary.
The completion of closing the filter plate 4 can be detected by a known technique such as detecting the position of the filter plate 4 or the movable head 5 or increasing the hydraulic pressure of the tightening cylinder 6.

The filter plate lubricating method and the lubricating device in the filter press according to the present invention can supply an appropriate amount of lubricating water to the sliding surface only when the filter plate is moved. Since no fat such as oil or grease is used outside the equipment, all rooms are simultaneously open-plate type suitable for wastewater treatment not only in water and industrial sludge but also in precision equipment production facilities and food-related factories. This is a filter press.

DESCRIPTION OF SYMBOLS 3 Side rail 4 Filter plate 6 Tightening cylinder 7 Connection link 10 Slide plate 10a Sliding surface 12 Groove part 13 Lubrication hole 14 Lubrication channel 16 Water supply device 18, 30 Lubricating water tank 19 Water level detection device 24 Control device 25, 35 Lubrication device 31 Partition Plate 32 Storage tank 33 Discharge tank D1, D2, D3, D4 Detector V1, V2, V3 valve

Claims (5)

A number of filter plates (4 ...) are juxtaposed to the slide plates (10) of the pair of side rails (3, 3), and each filter plate (4 ...) is connected by a connecting link (7). 6) In the simultaneous plate-type filter press that simultaneously opens the filter plate (4),
The level of lubricating water stored in the lubricating water tank (18, 30)
Maintain above the sliding surface (10a) of the slide plate (10),
When moving the filter plate (4),
The slide plate (10) and the lubricating water tank (18, 30) are communicated,
A method for lubricating a filter plate in a filter press, characterized in that lubricating water is supplied to the sliding surface of the slide plate by the water pressure of the lubricating water tank (18, 30). A number of filter plates (4 ...) are juxtaposed to the slide plates (10) of the pair of side rails (3, 3), and each filter plate (4 ...) is connected by a connecting link (7). 6) In the simultaneous plate-type filter press that simultaneously opens the filter plate (4),
Lubricating water tanks (18, 30) for storing lubricating water supplied by the water feeding device (16) are attached to the side rail (3),
A water level detection device (19) for detecting the water level of the lubricating water tank (18, 30) is disposed,
While maintaining the water level of the lubricating water tank (18, 30) above the sliding surface (10a) of the slide plate (10),
A detection device (D1, D2, D3, D4) for detecting opening and closing of the filter plate (4);
A filter press having a control device (24) for supplying lubricating water from the lubricating water tank (18, 30) to the sliding surface (10a) of the slide plate (10) upon detection of the opening / closing plate start. Board lubricator. Forming a groove (12) in the lower edge of the slide plate (10);
Drilling a plurality of lubricating holes (13 ...) penetrating to the sliding surface (10a) of the upper edge portion in the groove portion (12);
3. A filter plate lubrication device for a filter press according to claim 2, wherein a lubricating water channel (14) for supplying lubricating water from the lubricating water tank (18) to the groove (12) is provided. The lubricating water tank (18) is provided with a discharge pipe (20) provided with a valve (V1),
The level of lubricating water stored in the lubricating water tank (18)
4. A filter plate lubricating device in a filter press according to claim 2, wherein the filter plate is maintained slightly above the sliding surface (10a). The lubricating water tank (30) is divided into a storage tank (32) and a discharge tank (33) by a partition plate (31),
Lubricating water is stored in the storage tank (32) by the water feeding device (16),
A lubricating water channel (14) for supplying lubricating water to the sliding surface (10a) of the slide plate (10) is connected to the storage tank (32);
The upper end of the partition plate (31) is made higher than the sliding surface (10a),
Lubricating water is supplied to the sliding surface (10a) of a slide plate (10) with the water pressure of a storage tank (32), The lubricating device of the filter plate in the filter press of Claim 2 characterized by the above-mentioned.

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