Filter cloth cleaning device of plate-and-frame filter press

Abstract

The utility model relates to a plate-and-frame filter press filter cloth cleaning device which comprises a rack, a filter plate, a cleaning part, an overturning part and a driving part, the filter plate and the driving part are both connected with the rack, the cleaning part is connected with the bottom of the filter plate, the cleaning part comprises a flushing pipe, and a spray head is arranged on the flushing pipe. The overturning part comprises two supporting rods connected with the two ends of the filter cloth respectively and a transmission piece, the two ends of the transmission piece are connected with the two supporting rods respectively, the two supporting rods are located on the two sides of the filter plate respectively, the transmission piece surrounds the top of the filter plate, and the driving part is connected with the transmission piece to drive the transmission piece to move. And the transmission piece and the filter cloth form a closed loop surrounding the filter plate. According to the filter cloth cleaning device of the plate-and-frame filter press in the scheme, before the filter cloth is subjected to high-pressure cleaning, soil blocks which are strong in adhesive force and difficult to wash away by high-pressure cleaning can be removed from the filter cloth, so that the filter cloth can be thoroughly cleaned when the filter cloth is cleaned by the spray head, and the purpose of thoroughly cleaning the filter cloth is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning devices, in particular to a filter cloth cleaning device for a plate and frame filter press. Background Art

[0002] The working principle of the plate and frame filter press is to apply a certain pressure in a closed filter chamber so that the liquid in the suspension passes through the filter cloth, while the solid particles are retained on the filter cloth, thereby achieving the purpose of separating liquid and solid. In the process of applying pressure, the liquid in the suspension passes through the filter cloth and flows out of the filtrate pipe, while the solid particles are retained on the filter cloth to form a filter cake. When the thickness of the filter cake reaches a certain level, the filter cake needs to be removed from the filter cloth. After the cake is removed, the filter cloth is cleaned and regenerated.

[0003] At present, when cleaning the filter cloth, a high-pressure water gun is mostly used to flush the surface of the filter cloth to flush away impurities such as soil blocks adhering to the filter cloth. However, since the plate and frame filter press will apply pressure when working, the soil blocks adhering to the filter cloth need a greater impact force and a longer impact time to be flushed off the filter cloth by the high-pressure water gun. However, under the long-term flushing of the high-pressure water gun with a greater impact force, the service life of the filter cloth will be shortened and the filter cloth will be easily damaged. Therefore, in order to extend the service life of the filter cloth, when cleaning the filter cloth of the plate and frame filter press, a high-pressure water gun with a strong impact force is generally not used to flush the filter cloth for a long time. After the filter cloth is cleaned, the soil blocks with strong adhesion will still remain on the filter cloth and are difficult to be washed away, resulting in incomplete cleaning of the filter cloth. Utility Model Content

[0004] The utility model provides a plate and frame filter press filter cloth cleaning device to solve the problem that soil blocks with strong adhesion still remain on the filter cloth during the cleaning process of the filter cloth in the above-mentioned prior art solutions, resulting in incomplete cleaning of the filter cloth. The filter cloth cleaning device in this solution can remove the soil blocks with strong adhesion on the filter cloth before cleaning the filter cloth without shortening the service life of the filter cloth, and can thoroughly clean the filter cloth during cleaning and flushing.

[0005] The technical scheme adopted by the utility model is: a filter cloth cleaning device for a plate and frame filter press, comprising a frame, a filter plate, a cleaning part, a flipping part and a driving part, the filter plate is fixedly connected to the frame, the driving part is connected to the top of the frame, the cleaning part is connected to the bottom of the filter plate, the cleaning part comprises a flushing pipe, a nozzle for flushing the filter cloth is provided on the flushing pipe, the flipping part comprises two support rods respectively connected to two ends of the filter cloth and a transmission member respectively connected to the two support rods at two ends, the two support rods are respectively located on both sides of the filter plate, the transmission member surrounds the top of the filter plate, the driving part is connected to the transmission member to drive the transmission member to move, and when the two ends of the filter cloth are respectively connected to the two support rods, the transmission member and the filter cloth form a closed loop around the filter plate.

[0006] When the cleaning device is working, firstly, the two ends of the filter cloth are connected to the two support rods respectively, so that the filter cloth and the transmission member form a closed loop around the outer surface of the filter plate, wherein the transmission member is around the top of the filter plate, and the filter cloth is around the bottom of the filter plate. Then the driving unit drives the transmission member to move, so that the closed loop formed by the transmission member and the filter cloth rotates around the filter plate on the filter plate. During the closed loop rotation process, each position on the filter cloth will rotate from being in contact with the side of the filter plate to being in contact with the bottom of the filter plate, and then rotate to be in contact with the other side of the filter plate. During the process of the filter cloth rotating to be in contact with the bottom of the filter plate, the filter cloth will pass through the edge line between the side and bottom of the filter plate. When the filter cloth passes through the edge line between the side and bottom of the filter plate, the filter cloth will bend and change its forward direction. When the filter cloth is bent, the shape of the filter cloth changes, but the soil blocks adhered to the filter cloth have already formed, and their shape will not change with the change of the shape of the filter cloth. Therefore, when the filter cloth changes its shape through the edge between the side and bottom of the filter plate, the soil blocks with strong adhesion on the filter cloth will fall off the filter cloth as the shape of the filter cloth changes. When the driving unit drives the closed loop to rotate for the first time by driving the transmission member, the soil blocks with strong adhesion on the filter cloth fall off the filter cloth. Then the driving unit drives the closed loop to rotate for the second time by driving the transmission member. While the closed loop rotates for the second time, the nozzle on the flushing pipe is turned on, so that the nozzle sprays high-pressure water flow to the filter cloth to flush and clean the dust and soil blocks remaining on the filter cloth. Since the soil blocks with strong adhesion on the filter cloth that are difficult to be washed off have fallen off the filter cloth during the first rotation of the closed loop, the filter cloth can be thoroughly cleaned when the nozzle cleans the filter cloth, and the filter cloth is thoroughly cleaned.

[0007] The plate and frame filter press filter cloth cleaning device in this scheme can remove the soil blocks with strong adhesion and difficult to be washed away by high-pressure cleaning from the filter cloth before the filter cloth is cleaned under high pressure. Therefore, the filter cloth can be thoroughly cleaned when the nozzle cleans the filter cloth, thereby achieving the purpose of thoroughly cleaning the filter cloth.

[0008] Preferably, the driving part includes a driving motor, and the flipping part also includes a transmission rod, the driving motor is fixedly connected to the top of the frame, the transmission rod is rotatably connected to the top of the filter plate, a driving wheel for driving the transmission member is provided on the transmission rod, the driving wheel is fixedly connected to the transmission rod, and the driving motor is connected to the transmission rod to drive the transmission rod to rotate. The driving motor drives the movement of the transmission member by driving the rotation of the transmission rod, and then drives the closed loop formed by the transmission member and the filter cloth to rotate around the filter plate on the filter plate.

[0009] Preferably, the transmission member is a chain, the driving wheel is a sprocket, the two ends of the chain are fixedly connected to the two support rods respectively, there are two chains, the two chains are respectively located at the two ends of the same support rod, the driving wheel on the transmission rod is a sprocket, both ends of the transmission rod are provided with sprockets, and the two sprockets are respectively connected to the two chains. The transmission rod adopts a chain drive to drive the closed loop formed by the transmission member and the filter cloth to rotate around the filter plate on the filter plate. The chain drive has high transmission efficiency, a wide range of transmission ratio changes, strong load-bearing capacity, a long service life, and convenient maintenance.

[0010] Preferably, the transmission member is a conveyor belt, the driving wheel is a pulley, the two ends of the conveyor belt are respectively fixedly connected to the two support rods, there are two conveyor belts, the two conveyor belts are respectively located at the two ends of the same support rod, the driving wheel on the transmission rod is a pulley, both ends of the transmission rod are provided with pulleys, and the two pulleys are respectively connected to the two conveyor belts. The transmission rod adopts a belt transmission method to drive the closed loop formed by the transmission member and the filter cloth to rotate around the filter plate on the filter plate. The belt transmission structure is simple, the transmission is stable, it can buffer and absorb vibration, it can transmit power between large axis spacing and multiple axes, and it is low in cost.

[0011] Preferably, the first guide rod and the second guide rod are both connected to the top of the frame for rotation, the first guide rod is fixedly connected with the first bevel gear, the second guide rod is fixedly connected with the second bevel gear and the third bevel gear, the transmission rod is fixedly connected with the fourth bevel gear, the first bevel gear is meshed with the second bevel gear, the third bevel gear is meshed with the fourth bevel gear, the drive motor is connected with the first guide rod, and the drive motor is connected with the transmission rod through the first guide rod and the second guide rod. Wherein, the axis of the first guide rod is parallel to the axis of the transmission rod, the axis of the second guide rod is perpendicular to the axis of the transmission rod, and the drive motor is installed at the center of the side of the top of the frame. The drive motor drives the transmission rod to rotate through the first guide rod and the second guide rod, and the setting of the first guide rod and the second guide rod is convenient for selecting a suitable installation position of the drive motor on the frame, so that the drive motor is installed more stably on the frame. The connection between the first guide rod, the second guide rod and the transmission rod is carried out by the bevel gear, and the bevel gear can change the transmission direction, which is more convenient for selecting a suitable installation position of the drive motor on the frame.

[0012] Preferably, there are several filter plates, and the several filter plates are arranged linearly along the axis direction of the second guide rod on the frame, and each filter plate is provided with a flipping portion and a nozzle. The fourth bevel gear on the transmission rod is located at one end of the transmission rod. Among the several transmission rods, the fourth bevel gears on two adjacent transmission rods are respectively located at both ends of the transmission rod. There are two second guide rods, and the two second guide rods are respectively located at both ends of the transmission rod. Each fourth bevel gear is meshed with the third bevel gear on the second guide rod adjacent to it. Both ends of the first guide rod are provided with a first bevel gear, and the two first bevel gears are respectively meshed with the second bevel gears on the two second guide rods. There are several filter plates, so that the device can clean several filter cloths at the same time, further improving the cleaning efficiency of the filter cloth. By driving several transmission rods by two second guide rods, it can be avoided that when one second guide rod is used, the load on the second guide rod is too large, which affects its service life. The fourth bevel gears on the two adjacent transmission rods are respectively located at both ends of the transmission rod, so that the load distribution on the two second guide rods is more uniform, further extending its service life.

[0013] Preferably, the bottom of the filter plate is also provided with a guide rod for the filter cloth to bypass, and the guide rod is rotatably connected to the filter plate. There are two guide rods, which are respectively located on both sides of the bottom surface of the filter plate. A plurality of flushing heads are provided on the flushing pipe, and the spraying directions of two adjacent flushing heads are respectively used to face two different guide rods. A guide rod is provided at the bottom of the filter plate, and the guide rod can reduce the friction between the filter cloth and the filter plate, and reduce the influence of the friction between the filter cloth and the filter plate on the service life of the filter cloth. Two guide rods are provided on the bottom surface of the filter plate, which can change the forward direction of the filter cloth twice, and further improve the effect of removing the soil blocks with strong adhesion from the filter cloth. At the same time, the spraying directions of the two adjacent flushing heads are respectively used to align with two different guide rods, so that the filter cloth can be flushed and cleaned twice, and the cleaning effect of the filter cloth can be further improved.

[0014] Preferably, it also includes a sewage pipe and a sewage trough, the sewage trough is fixedly connected to the frame, one end of the sewage pipe is connected to the water outlet of the flushing pipe, and the other end is used to extend into the inner cavity of the sewage trough, and a solenoid valve is also provided on the sewage pipe at one end close to the flushing pipe, and the solenoid valve is used to control the opening and closing of the sewage pipe. In normal state, the solenoid valve on the sewage pipe is closed, and the water flowing into the flushing pipe is sprayed out from the nozzle on the flushing pipe to flush and clean the filter cloth. When the user finds that the water pressure of the nozzle on the flushing pipe becomes smaller, it means that there is too much sludge accumulated inside the flushing pipe, causing the water flow rate in the flushing pipe to slow down. At this time, the solenoid valve is opened, and the water flow in the flushing pipe will enter the sewage pipe along the water outlet of the flushing pipe, and finally flow into the sewage tank. In the process of the water flow in the flushing pipe flowing into the sewage pipe, the water flow will flush away the sludge in the flushing pipe, carry the sludge along the sewage pipe into the sewage tank, and discharge the sludge in the flushing pipe. When it is seen that there is no sludge discharged in the sewage pipe, the solenoid valve is closed, so that the water flow in the flushing pipe is sprayed out from the nozzle again to flush the filter cloth. The setting of the sewage pipe and the sewage tank can discharge the sludge in the flushing pipe when it is blocked by sludge, so that the device can smoothly flush the filter cloth.

[0015] Compared with the prior art, the beneficial effect of the utility model is that the filter cloth cleaning device of the plate and frame filter press in the present scheme can remove the soil blocks with strong adhesion on the filter cloth and difficult to be washed away by high-pressure cleaning from the filter cloth before the filter cloth is cleaned under high pressure. Therefore, the filter cloth can be thoroughly cleaned when the nozzle cleans the filter cloth, thereby achieving the purpose of thoroughly cleaning the filter cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a filter cloth cleaning device for a plate and frame filter press of the utility model;

[0017] Figure 2 The utility model is a filter cloth cleaning device for a plate and frame filter press. Figure 1 A magnified view of part A in FIG.

[0018] Figure 3 The utility model is a filter cloth cleaning device for a plate and frame filter press. Figure 1 A magnified view of part B in FIG.

[0019] Figure 4 The utility model is a filter cloth cleaning device for a plate and frame filter press. Figure 1 The enlarged view of the C part in FIG.

[0020] Figure 5 It is a structural schematic diagram of a filter plate of a filter cloth cleaning device for a plate and frame filter press of the utility model;

[0021] Figure 6 The utility model is a filter cloth cleaning device for a plate and frame filter press. Figure 5 The enlarged view of the D part in FIG.

[0022] Figure 7 The utility model is a filter cloth cleaning device for a plate and frame filter press. Figure 5 Enlarged view of part E in . DETAILED DESCRIPTION

[0023] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0024] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0026] Example 1

[0027] like Figure 1 , Figure 5 , Figure 6 and Figure 7 The figure shows an embodiment 1 of a filter cloth cleaning device for a plate and frame filter press, comprising a frame 1, a filter plate 2, a cleaning portion, a flipping portion and a driving portion, wherein the filter plate 2 is fixedly connected to the frame 1, the driving portion is connected to the top of the frame 1, the cleaning portion is connected to the bottom of the filter plate 2, the cleaning portion comprises a flushing pipe 3, the flushing pipe 3 is provided with a nozzle 4 for flushing the filter cloth 7, the flipping portion comprises two support rods 5 respectively connected to the two ends of the filter cloth 7 and a transmission member 6 respectively connected to the two support rods 5 at both ends, the two support rods 5 are respectively located on both sides of the filter plate 2, the transmission member 6 surrounds the top of the filter plate 2, the driving portion is connected to the transmission member 6 to drive the transmission member 6 to move, and when the two ends of the filter cloth 7 are respectively connected to the two support rods 5, the transmission member 6 and the filter cloth 7 form a closed loop around the filter plate 2.

[0028] The working principle or working process of this embodiment is as follows: when the cleaning device is working, firstly, the two ends of the filter cloth 7 are connected to the two support rods 5 respectively, so that the filter cloth 7 and the transmission member 6 form a closed loop around the outer surface of the filter plate 2, wherein the transmission member 6 is around the top of the filter plate 2, and the filter cloth 7 is around the bottom of the filter plate 2. Then the driving unit drives the transmission member 6 to move, so that the closed loop formed by the transmission member 6 and the filter cloth 7 rotates around the filter plate 2 on the filter plate 2. During the closed loop rotation process, each position on the filter cloth 7 will rotate from being in contact with the side of the filter plate 2 to being in contact with the bottom of the filter plate 2, and then rotate to be in contact with the other side of the filter plate 2. During the process of the filter cloth 7 rotating to being in contact with the bottom of the filter plate 2, the filter cloth 7 will pass through the edge line between the side and bottom of the filter plate 2. When the filter cloth 7 passes through the edge line between the side and bottom of the filter plate 2, the filter cloth 7 will bend and change the forward direction. When the filter cloth 7 is bent, the shape of the filter cloth 7 changes, but the soil blocks adhered to the filter cloth 7 have already formed, and their shape will not change with the change of the shape of the filter cloth 7. Therefore, when the filter cloth 7 changes its shape through the edge between the side and bottom surfaces of the filter plate 2, the soil blocks with strong adhesion on the filter cloth 7 will fall from the filter cloth 7 as the shape of the filter cloth 7 changes. When the driving unit drives the closed loop to rotate for the first time by driving the transmission member 6, the soil blocks with strong adhesion on the filter cloth 7 fall from the filter cloth 7. Then the driving unit drives the closed loop to rotate for the second time by driving the transmission member 6. When the closed loop rotates for the second time, the nozzle 4 on the flushing pipe 3 is turned on, so that the nozzle 4 sprays high-pressure water to the filter cloth 7 to flush and clean the dust and soil blocks remaining on the filter cloth 7. Since the soil blocks with strong adhesion that are difficult to be washed off the filter cloth 7 have fallen off the filter cloth 7 during the first rotation of the closed loop, the filter cloth 7 can be thoroughly cleaned when the nozzle 4 cleans the filter cloth 7, and the filter cloth 7 is thoroughly cleaned.

[0029] Beneficial effects of this embodiment: the cleaning device for the filter cloth 7 of the plate and frame filter press in this scheme can remove the soil blocks with strong adhesion on the filter cloth 7 and difficult to be washed away by high-pressure cleaning from the filter cloth 7 before the filter cloth 7 is cleaned under high pressure. Therefore, when the nozzle 4 cleans the filter cloth 7, the filter cloth 7 can be thoroughly cleaned, thereby achieving the purpose of thoroughly cleaning the filter cloth 7.

[0030] Example 2

[0031] Embodiment 2 of a plate and frame filter press filter cloth cleaning device, as Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, based on the first embodiment, the movement mode of the driving transmission member 6 is further limited.

[0032] Specifically, the driving part includes a driving motor, and the flipping part also includes a transmission rod 8. The driving motor is fixedly connected to the top of the frame 1, and the transmission rod 8 is rotatably connected to the top of the filter plate 2. The transmission rod 8 is provided with a driving wheel 9 for driving the transmission member 6. The driving wheel 9 is fixedly connected to the transmission rod 8, and the driving motor is connected to the transmission rod 8 to drive the transmission rod 8 to rotate.

[0033] Specifically, the transmission member 6 is a chain, the driving wheel 9 is a sprocket, the two ends of the chain are fixedly connected to the two support rods 5 respectively, there are two chains, and the two chains are respectively located at the two ends of the same support rod 5, the driving wheel 9 on the transmission rod 8 is a sprocket, and sprockets are provided at both ends of the transmission rod 8, and the two sprockets are respectively connected to the two chains.

[0034] Specifically, it also includes a first guide rod 10 and a second guide rod 11 both rotatably connected to the top of the frame 1, a first bevel gear 12 is fixedly connected to the first guide rod 10, a second bevel gear 13 and a third bevel gear 14 are fixedly connected to the second guide rod 11, a fourth bevel gear 15 is fixedly connected to the transmission rod 8, the first bevel gear 12 is meshed with the second bevel gear 13, the third bevel gear 14 is meshed with the fourth bevel gear 15, a drive motor is connected to the first guide rod 10, and the drive motor is connected to the transmission rod 8 through the first guide rod 10 and the second guide rod 11. Among them, the axis of the first guide rod 10 is parallel to the axis of the transmission rod 8, the axis of the second guide rod 11 is perpendicular to the axis of the transmission rod 8, and the drive motor is installed at the side center position of the top of the frame 1.

[0035] Beneficial effects of this embodiment: the driving motor drives the movement of the transmission member 6 by driving the rotation of the transmission rod 8, and then drives the closed loop formed by the transmission member 6 and the filter cloth 7 to rotate around the filter plate 2 on the filter plate 2. The transmission rod 8 drives the closed loop formed by the transmission member 6 and the filter cloth 7 to rotate around the filter plate 2 on the filter plate 2 by chain transmission. The chain transmission has high transmission efficiency, a wide range of transmission ratio changes, strong bearing capacity, long service life, and convenient maintenance. The driving motor drives the transmission rod 8 to rotate through the first guide rod 10 and the second guide rod 11. The setting of the first guide rod 10 and the second guide rod 11 facilitates the selection of a suitable installation position of the driving motor on the frame 1, so that the driving motor is installed more stably on the frame 1. The first guide rod 10, the second guide rod 11 and the transmission rod 8 are connected by bevel gears. The bevel gears can change the transmission direction, which makes it easier to select a suitable installation position of the driving motor on the frame 1.

[0036] Example 3

[0037] Embodiment 3 of a filter cloth cleaning device for a plate and frame filter press, the difference between this embodiment and embodiment 2 is that the transmission member 6 is a conveyor belt, the driving wheel 9 is a pulley, the two ends of the conveyor belt are respectively fixedly connected to the two support rods 5, there are two conveyor belts, the two conveyor belts are respectively located at the two ends of the same support rod 5, the driving wheel 9 on the transmission rod 8 is a pulley, both ends of the transmission rod 8 are provided with pulleys, and the two pulleys are respectively connected to the two conveyor belts.

[0038] Compared with the embodiment 2, the present embodiment has the following beneficial effects: the transmission rod 8 adopts a belt drive method to drive the closed loop formed by the transmission member 6 and the filter cloth 7 to rotate around the filter plate 2 on the filter plate 2. The belt drive structure is simple, the transmission is stable, it can buffer and absorb vibration, it can transmit power between large axis spacing and multiple axes, and it is low in cost.

[0039] The other features, working principles and beneficial effects of this embodiment are consistent with those of Embodiment 2.

[0040] Example 4

[0041] Embodiment 4 of a plate and frame filter press filter cloth cleaning device, as Figure 1 , Figure 4 , Figure 5 and Figure 7 As shown, based on embodiments 1-3, other structures of the device are further limited.

[0042] Specifically, there are a plurality of filter plates 2, which are linearly arranged along the axial direction of the second guide rod 11 on the frame 1, and each filter plate 2 is provided with a flipping portion and a nozzle 4. The fourth bevel gear 15 on the transmission rod 8 is located at one end of the transmission rod 8, and the fourth bevel gears 15 on two adjacent transmission rods 8 among the plurality of transmission rods 8 are respectively located at both ends of the transmission rod 8, and there are two second guide rods 11, which are respectively located at both ends of the transmission rod 8, and each fourth bevel gear 15 is meshed with the third bevel gear 14 on the second guide rod 11 adjacent thereto, and first bevel gears 12 are provided at both ends of the first guide rod 10, and the two first bevel gears 12 are respectively meshed with the second bevel gears 13 on the two second guide rods 11.

[0043] Specifically, a guide rod 16 for the filter cloth 7 to bypass is further provided at the bottom of the filter plate 2, and the guide rod 16 is rotatably connected to the filter plate 2. There are two guide rods 16, which are respectively located on both sides of the bottom surface of the filter plate 2. A plurality of flushing heads are provided on the flushing pipe 3, and the spraying directions of two adjacent flushing heads are respectively used to face two different guide rods 16.

[0044] Specifically, it also includes a sewage pipe 17 and a sewage trough 18. The sewage trough 18 is fixedly connected to the frame 1. One end of the sewage pipe 17 is connected to the water outlet of the flushing pipe 3, and the other end is used to extend into the inner cavity of the sewage trough 18. The end of the sewage pipe 17 close to the flushing pipe 3 is also provided with a solenoid valve 19, and the solenoid valve 19 is used to control the opening and closing of the sewage pipe 17. In the normal state, the solenoid valve 19 on the sewage pipe 17 is closed, and the water entering the flushing pipe 3 is sprayed from the nozzle 4 on the flushing pipe 3 to flush and clean the filter cloth 7.

[0045] The working principle or working process of this embodiment is as follows: when the user finds that the water pressure of the nozzle 4 on the flushing pipe 3 becomes smaller, it means that too much sludge has accumulated inside the flushing pipe 3, causing the flow rate of the water in the flushing pipe 3 to slow down. At this time, the solenoid valve 19 is opened, and the water in the flushing pipe 3 will enter the sewage pipe 17 along the water outlet of the flushing pipe 3, and finally flow into the sewage tank 18. In the process of the water in the flushing pipe 3 flowing into the sewage pipe 17, the water will flush away the sludge in the flushing pipe 3, carry the sludge along the sewage pipe 17 into the sewage tank 18, and discharge the sludge in the flushing pipe 3. When it is seen that there is no sludge discharged from the sewage pipe 17, the solenoid valve 19 is closed, so that the water in the flushing pipe 3 is sprayed out from the nozzle 4 again to flush the filter cloth 7.

[0046] Beneficial effects of this embodiment: a plurality of filter plates 2 are provided, so that the device can clean a plurality of filter cloths 7 at the same time, further improving the cleaning efficiency of the filter cloth 7. By driving a plurality of transmission rods 8 through two second guide rods 11, it is possible to avoid excessive load on the second guide rod 11 when one second guide rod 11 is used, thereby affecting its service life. The fourth bevel gears 15 on the two adjacent transmission rods 8 are respectively located at the two ends of the transmission rod 8, so that the load distribution on the two second guide rods 11 is more uniform, further extending its service life. A guide rod 16 is provided at the bottom of the filter plate, and the guide rod 16 can reduce the friction between the filter cloth 7 and the filter plate 2, and reduce the influence of the friction between the filter cloth 7 and the filter plate 2 on the service life of the filter cloth 7. Two guide rods 16 are provided on the bottom surface of the filter plate 2, which can change the forward direction of the filter cloth 7 twice, further improving the effect of removing the strong adhesion clods from the filter cloth 7. At the same time, the spraying directions of the two adjacent flushing heads are respectively used to align with two different guide rods 16, so that the filter cloth 7 can be flushed and cleaned twice, further improving the cleaning effect of the filter cloth 7. The arrangement of the sewage pipe 17 and the sewage tank 18 can discharge the sludge in the flushing pipe 3 when the flushing pipe 3 is blocked by sludge, so that the device can flush the filter cloth 7 smoothly.

[0047] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A filter cloth cleaning device for a plate and frame filter press, characterized in that: The invention comprises a frame (1), a filter plate (2), a cleaning part, a turning part and a driving part, wherein the filter plate (2) is fixedly connected to the frame (1), the driving part is connected to the top of the frame (1), the cleaning part is connected to the bottom of the filter plate (2), the cleaning part comprises a flushing pipe (3), and a nozzle (4) for flushing the filter cloth (7) is provided on the flushing pipe (3). The flipping part comprises two support rods (5) respectively connected to the two ends of the filter cloth (7) and a transmission member (6) whose two ends are respectively connected to the two support rods (5); the two support rods (5) are respectively located on both sides of the filter plate (2); the transmission member (6) bypasses the top of the filter plate (2); the driving part is connected to the transmission member (6) to drive the transmission member (6) to move; when the two ends of the filter cloth (7) are respectively connected to the two support rods (5), the transmission member (6) and the filter cloth (7) form a closed loop around the filter plate (2).

2. A plate and frame filter press filter cloth cleaning device according to claim 1, characterized in that: The driving part comprises a driving motor, and the flipping part further comprises a transmission rod (8), wherein the driving motor is fixedly connected to the top of the frame (1), and the transmission rod (8) is rotatably connected to the top of the filter plate (2), and the transmission rod (8) is provided with a driving wheel (9) for driving the transmission member (6), and the driving wheel (9) is fixedly connected to the transmission rod (8), and the driving motor is connected to the transmission rod (8) for driving the transmission rod (8) to rotate.

3. A filter cloth cleaning device for a plate and frame filter press according to claim 2, characterized in that: The transmission member (6) is a chain, the driving wheel (9) is a sprocket, the two ends of the chain are respectively fixedly connected to the two support rods (5), there are two chains, the two chains are respectively located at the two ends of the same support rod (5), and the two ends of the transmission rod (8) are provided with the sprockets, and the two sprockets are respectively connected to the two chains.

4. A plate and frame filter press filter cloth cleaning device according to claim 2, characterized in that: The transmission member (6) is a conveyor belt, the driving wheel (9) is a pulley, the two ends of the conveyor belt are respectively fixedly connected to the two support rods (5), there are two conveyor belts, the two conveyor belts are respectively located at the two ends of the same support rod (5), and the two ends of the transmission rod (8) are provided with the pulleys, and the two pulleys are respectively connected to the two conveyor belts.

5. A filter cloth cleaning device for a plate and frame filter press according to claim 3 or 4, characterized in that: The invention also comprises a first guide rod (10) and a second guide rod (11) both of which are rotatably connected to the top of the frame (1); a first bevel gear (12) is fixedly connected to the first guide rod (10); a second bevel gear (13) and a third bevel gear (14) are fixedly connected to the second guide rod (11); a fourth bevel gear (15) is fixedly connected to the transmission rod (8); the first bevel gear (12) is meshed with the second bevel gear (13); the third bevel gear (14) is meshed with the fourth bevel gear (15); the drive motor is connected to the first guide rod (10); and the drive motor is connected to the transmission rod (8) via the first guide rod (10) and the second guide rod (11).

6. A plate and frame filter press filter cloth cleaning device according to claim 5, characterized in that: There are a plurality of filter plates (2), and the plurality of filter plates (2) are linearly arranged on the frame (1) along the axial direction of the second guide rod (11), and each filter plate (2) is provided with a turning portion and a nozzle (4).

7. A plate and frame filter press filter cloth cleaning device according to claim 6, characterized in that: The fourth bevel gear (15) on the transmission rod (8) is located at one end of the transmission rod (8); among the plurality of transmission rods (8), the fourth bevel gears (15) on two adjacent transmission rods (8) are respectively located at two ends of the transmission rod (8); there are two second guide rods (11), the two second guide rods (11) are respectively located at two ends of the transmission rod (8); each of the fourth bevel gears (15) is meshed with the third bevel gear (14) on the adjacent second guide rod (11); the first bevel gears (12) are provided at both ends of the first guide rod (10), and the two first bevel gears (12) are respectively meshed with the second bevel gears (13) on the two second guide rods (11).

8. The filter cloth cleaning device for a plate and frame filter press according to claim 1, characterized in that: A guide rod (16) for the filter cloth (7) to pass around is also provided at the bottom of the filter plate (2), and the guide rod (16) is rotatably connected to the filter plate (2).

9. A filter cloth cleaning device for a plate and frame filter press according to claim 8, characterized in that: There are two guide rods (16), which are respectively located on both sides of the bottom surface of the filter plate (2). The flushing pipe (3) is provided with a plurality of flushing heads, and the spraying directions of two adjacent flushing heads are respectively used to face two different guide rods (16).

10. The filter cloth cleaning device of a plate and frame filter press according to claim 1, characterized in that: It also comprises a sewage pipe (17) and a sewage trough (18), wherein the sewage trough (18) is fixedly connected to the frame (1), one end of the sewage pipe (17) is connected to the water outlet of the flushing pipe (3), and the other end is used to extend into the inner cavity of the sewage trough (18), and an electromagnetic valve (19) is also provided on the end of the sewage pipe (17) close to the flushing pipe (3), and the electromagnetic valve (19) is used to control the opening and closing of the sewage pipe (17).

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