A river sludge treatment filter press device

Abstract

The present invention discloses a river sludge treatment filter press device, which includes a filter press body, filter plates and a plate pulling trolley. The filter plates are slidably installed between the frames of the filter press body, and a plate pulling trolley for pulling the filter plates is installed at the side guide rail of the filter press body. The device also includes a plate lifting mechanism, a gas transmission mechanism, a plate blowing mechanism and a cake ejecting mechanism. In the present invention, a plate lifting mechanism is provided at the plate pulling trolley of the filter press body. The coordinated operation of the plate lifting mechanism and the plate pulling trolley realizes the automatic lifting and moving of the filter plates during sludge discharge. And a plate blowing mechanism is provided at the filter plates, which cooperates with the gas transmission mechanism provided at the plate lifting mechanism to blow up the filter cloth at the filter plates. At the same time, the cake ejecting mechanism provided at the conical ribs of the filter plates can provide the elastic force for sludge discharge, so that the filter cloth and the sludge cake are easily separated under the action of force, effectively ensuring that the river sludge filter cake can be easily shaken off at the filter plates.

Description

Technical Field

[0001] The present invention relates to the technical field of river sludge pressure filtration treatment, and particularly relates to a river sludge treatment pressure filtration device. Background Art

[0002] River sludge refers to the silt-like substances containing organic matter, inorganic matter and microorganisms deposited at the bottom of the river. The accumulation of river sludge will block the river channel, reduce the water flow velocity, and affect the self-purification ability of the river channel. Therefore, river sludge will be cleaned as required. When cleaning river sludge, a high-pressure water gun is usually used to scour and damage the sludge at the bottom of the river, and then a slurry pump is used to suck and discharge the slurry to a special pressure filter for river sludge for pressure filtration treatment. The river sludge pressure filter is a special equipment, and its working principle mainly utilizes the principles of automatic water removal and extrusion dehydration. When working, the sludge is introduced into the equipment through a slurry pump. After being pressed and squeezed by the plate frame equipped with a filter cloth, the products coming out are clear water and mud cakes. This treatment method does not require manual unloading. The water in the mud cakes is effectively removed and can be directly packed and transported. At the same time, the generated clear water can be directly discharged.

[0003] At present, when river sludge is subjected to pressure filtration treatment at a plate-frame type pressure filter, after being squeezed by the plate frame equipped with a filter cloth, the dewatered mud cakes will be pressed on the surface of the filter cloth. When the plate frame is pulled open by a pull plate trolley, the mud cakes on the surface of the filter cloth will fall downward due to their own weight. As the filter cloth is worn out after multiple uses, the separation between the filter cloth and the mud cakes will be reduced. After the pull plate trolley pulls the plate frame, the mud cakes on the surface of the filter cloth are often not easy to fall off. At this time, workers often need to use a stick to knock the non-fallen mud cakes one by one, resulting in inconvenience in the pressure filtration treatment of river sludge. For this reason, we propose a river sludge treatment pressure filtration device. Summary of the Invention

[0004] The main purpose of the present invention is to provide a river sludge treatment pressure filtration device. The present invention sets a lifting plate mechanism at the pull plate trolley of the pressure filter body. The coordinated work of the lifting plate mechanism and the pull plate trolley realizes the automatic lifting and movement during the mud removal of the pressure filter plate frame, enabling the pressure filter plate frame to be pulled away, lifted and shaken for mud removal. And a blowing plate mechanism is set at the pressure filter plate frame to cooperate with the air transmission mechanism set at the lifting plate mechanism. The air transmission mechanism can introduce the gas provided by an external compressor into the blowing plate mechanism for vertical air blowing, so that the filter cloth outside the pressure filter plate frame is blown, assisting the mud cakes outside the filter cloth to loosen. And the elastic cake mechanism set at the frustum rib of the pressure filter plate frame can accumulate elastic force when the pressure filter plate frame presses the slurry. After the pressure filter plate frame is pulled open by the pull plate trolley, the spring of the elastic cake mechanism supports the T-shaped elastic column to strike the filter cloth outside the pressure filter plate frame, enabling the mud cakes to be better separated from the filter cloth under the action of the elastic force, effectively ensuring that the river sludge pressure filtration mud cakes can be easily shaken off at the pressure filter plate frame, and effectively solving the problems in the background art.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A river sludge treatment filter press device includes a filter press body, filter plates and a plate pulling trolley. A filter plate is slidably installed between the frames of the filter press body, and a plate pulling trolley for pulling the filter plate is installed at the side guide rail of the filter press body. The device further includes a plate lifting mechanism, a gas transmission mechanism, a plate blowing mechanism and a cake ejecting mechanism. A plate lifting mechanism for supporting the filter plate is installed outside the side shell of the plate pulling trolley, and a gas transmission mechanism for actively guiding gas is installed at the plate lifting mechanism through a support plate. A plate blowing mechanism for vertically blowing air in cooperation with the gas transmission mechanism is arranged at the top of the filter plate, and a round table rib protrudes from the surface of the filter plate. A cake ejecting mechanism for ejecting the sludge cake is arranged at the round table rib.

[0007] Further, the plate lifting mechanism includes a strip-shaped plate, a support table, an electric push rod, a lifting plate and an inclined limiting plate. The strip-shaped plate is locked to the outside of the side shell of the plate pulling trolley by bolts, and a support table is welded to the top of the strip-shaped plate. An electric push rod is installed below the table groove of the support table, and the telescopic rod of the electric push rod passes upward through the table groove of the support table. A lifting plate for lifting the filter plate is installed at the head of the telescopic rod of the electric push rod passing through the support table, and inclined limiting plates for limiting the filter plate are symmetrically fixed on both sides of the plate body of the lifting plate.

[0008] By adopting the above preferred technical solution, the following effects can be achieved. After the strip-shaped plate of the plate lifting mechanism is locked to the plate pulling trolley by bolts, the outside of the strip-shaped plate can support the electric push rod through the support table. Then, a lifting plate can be installed at the head of the telescopic rod of the electric push rod passing through the support table. When the plate pulling trolley slides at the side guide rail of the filter press body to perform the plate pulling operation of the filter plate, the electric push rod can move along with it. Then, the electric push rod can push the lifting plate to rise and fall. The lifting plate cooperates with the inclined limiting plate to lift the side blocks of the filter plate up and down. At the same time, the two groups of plate pulling trolleys on both sides of the filter press body can be staggered by a certain distance, so that the filter plate can be lifted and shaken, ensuring that the sludge cake after river sludge filtration can be shaken off after the filter cloth is sleeved outside the filter plate. And when the filter plate is lifted and shaken, the inclined limiting plate at the lifting plate can limit the position in the opposite direction, preventing the filter plate from slipping outwards.

[0009] Further, side plates are symmetrically welded to the outside of the shell of the electric push rod, and the side plates are locked to the lower table surface of the support table by bolts. Threaded holes for vertically screwing bolts are provided on the surface of the telescopic rod head of the electric push rod and the lifting plate.

[0010] By adopting the above preferred technical solution, the following effects can be achieved. After the side plates are welded to the outside of the shell of the electric push rod, the side plates can be locked to obtain support below the support table by bolts. Then, the lifting plate and the electric push rod can be locked and connected by screwing bolts, ensuring that the electric push rod can push the lifting plate to rise.

[0011] Further, a support plate for supporting the air transmission mechanism is welded outside the arc plate edge of the lifting plate away from the inclined limiting plate. The air transmission mechanism includes a bottom mounting pipe, a bottom connecting pipe, an L-shaped flat pipe, an insertion connecting pipe, and a vertical guiding pipe. The support plate is welded with the bottom mounting pipe, and the bottom connecting pipe is screwed and installed at the lower pipe opening of the bottom mounting pipe. The bottom mounting pipe above the support plate is interconnected and welded with the insertion connecting pipe through the L-shaped flat pipe, and a vertical guiding pipe for vertically exhausting air in cooperation with the blowing plate mechanism is interconnected and welded at the head pipe opening of the insertion connecting pipe;

[0012] By adopting the above preferred technical solution, the following effects can be achieved. After the support plate is welded at the arc plate edge of the lifting plate, the bottom mounting pipe can be inserted and welded at the support plate, and the bottom connecting pipe can be installed below the bottom mounting pipe to connect the hose of the external air supply device. At the same time, the bottom mounting pipe can communicate with the insertion connecting pipe through the L-shaped flat pipe. When the electric push rod of the lifting plate mechanism raises the lifting plate and the support plate, the insertion connecting pipe can cooperate with the vertical guiding pipe to be clamped into the socket of the blowing plate mechanism for temporary air supply and downward blowing.

[0013] Further, the blowing plate mechanism includes an alignment groove, an alignment cover plate, a U-shaped conduit, a connecting air pipe, and a socket. Alignment grooves communicating with the plate groove are symmetrically opened at the top end of the filter press plate frame, and an alignment cover plate is fixed in the alignment grooves. A U-shaped conduit is clamped between the alignment cover plate and the alignment groove, and the top end of the pipe body of the U-shaped conduit is interconnected and welded with the socket through the connecting air pipe. A U-shaped guiding groove for clamping the vertical guiding pipe is opened on the side seat surface of the socket;

[0014] By adopting the above preferred technical solution, the following effects can be achieved. After the alignment groove of the blowing plate mechanism is arranged at the filter press plate frame, the alignment cover plate can be fixed in the alignment groove, and then the U-shaped conduit can be clamped between the alignment cover plate and the alignment groove for installation. The socket connected by the connecting air pipe above the U-shaped conduit cooperates with the U-shaped guiding groove to temporarily clamp the vertical guiding pipe for air supply, so that the compressed air can enter the filter press plate frame from the U-shaped conduit. When a filter cloth is sleeved outside the filter press plate frame to generate filter cakes during pressure filtration, the filter cloth can be blown, and the auxiliary filter cakes can fall off better.

[0015] Further, an inner ring groove of the elastic cake mechanism is opened in the conical rib below the alignment groove. The elastic cake mechanism includes an inner ring groove, an inner fixing ring, a support block, a notch, an elastic hole, a spring, and a T-shaped elastic column. A notch is opened on the notch of the inner ring groove and the surface of the conical rib, and the inner fixing ring is clamped into the inner ring groove. A support block for clamping into the inner ring groove protrudes from the outer ring body of the inner fixing ring, and an elastic hole for clamping the spring is opened between the central groove wall of the inner ring groove and the conical rib. A T-shaped elastic column for passing through the inner fixing ring is clamped in the elastic hole on one side of the spring;

[0016] By adopting the above-mentioned preferred technical solution, the following effects can be achieved. After the inner ring groove and the notch of the spring cake mechanism are opened at the truncated cone rib, the spring hole can be set at the truncated cone rib, and then the spring can be put into the spring hole from the inner ring groove, and then the T-shaped spring column can be clamped into the spring hole from the inner ring groove to compress the spring, and then the inner fixed ring can be clamped on the outside of the T-shaped spring column, and then the support block of the inner fixed ring can be clamped into the inner ring groove from the notch and rotated, so that the support block can be rotated into the inner ring groove to stop retreat, when the filter press plate frame with the filter cloth is sleeved to squeeze the mud cake, the T-shaped spring column can enter the annular hole of the inner fixed ring and compress the spring to obtain elastic force, and when the filter press plate frame loses pressure and separates from each other, the T-shaped spring column can pop out of the inner fixed ring to resist the filter cloth under the support of the spring, so that the mud cake can fall out of the filter cloth.

[0017] Furthermore, the inner fixed ring has a raised convex surface in the middle of its ring body, and the diameter of the ring hole of the inner fixed ring is the same as the diameter of the body of the T-shaped elastic column. A tail plate is fixed to the rear of the body of the T-shaped elastic column, and the diameter of the tail plate of the T-shaped elastic column is larger than the diameter of the ring hole of the inner fixed ring. The outer ferrule of the column of the T-shaped elastic column has a sealing ring for contacting the inner fixed ring.

[0018] By adopting the above preferred technical solution, the following effects can be achieved: after the filter cloth is sleeved on the outside of the filter press plate frame, the inner fixed ring with a convex ring surface can lift the filter cloth, and then the T-shaped elastic column can be pushed out from the inner fixed ring, and when the T-shaped elastic column is pushed out from the inner fixed ring, the sealing ring can increase the sealing performance of the T-shaped elastic column at the inner fixed ring.

[0019] Furthermore, threaded pipes are fixed at both ends of the bottom pipe opening, and the threaded pipe on one side of the bottom pipe is screwed into the bottom of the bottom mounting pipe;

[0020] By adopting the above preferred technical solution, the following effects can be achieved: threaded tubes are provided at both ends of the bottom pipe, and then the bottom pipe can be screwed to the bottom of the bottom pipe through the threaded tube to connect, and at the same time, the threaded tube at the other end of the bottom pipe can be screwed into the hose connector of the external gas supply equipment to connect the gas supply.

[0021] Furthermore, a rubber pad is bonded to the surface of the lifting plate between the inclined limiting plates, and the thickness of the rubber pad is less than the height of the inclined limiting plates;

[0022] By adopting the above preferred technical solution, the following effects can be achieved: the lifting plate between the inclined limit plates cooperates with the rubber pad to elastically support the filter press plate frame. The design of the rubber pad increases the friction between the lifting plate and the filter press plate frame, making the lifting process more stable. The rubber pad has a certain elasticity and can buffer the impact between the lifting plate and the filter press plate frame, protecting the filter press plate frame from damage.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention realizes the automatic lifting and movement of the filter press plate frame during sludge removal by setting a plate-lifting mechanism at the pulling plate trolley of the filter press body. The coordinated operation of the plate-lifting mechanism and the pulling plate trolley enables the filter press plate frame to be pulled away, lifted, and shaken. After the filter cloth is sleeved, it is easy for the filter press plate frame and the river sludge filter cake to become loose, effectively ensuring that the river sludge filter cake can be easily shaken off at the filter press plate frame;

[0025] Moreover, a blowing plate mechanism is set at the filter press plate frame and a gas transmission mechanism is set at the plate-lifting mechanism. The gas transmission mechanism can introduce the gas provided by an external compressor into the blowing plate mechanism for vertical air blowing, so that the filter cloth outside the filter press plate frame is blown, assisting the filter cake outside the filter cloth to become loose, effectively ensuring that the river sludge filter cake can be easily shaken off at the filter press plate frame, and at the same time removing the residual sludge at the filter cloth;

[0026] The elastic cake mechanism set at the frustum rib of the filter press plate frame can accumulate elastic force when the filter press plate frame presses the slurry. After the filter press plate frame is pulled open by the pulling plate trolley, the spring of the elastic cake mechanism supports the T-shaped elastic column to strike the filter cloth outside the filter press plate frame, so that the filter cake can be better separated from the filter cloth under the action of the elastic force, effectively ensuring that the river sludge filter cake can be easily shaken off at the filter press plate frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a river sludge treatment filter press device of the present invention.

[0028] Figure 2 It is a schematic diagram of the splitting of the pulling plate trolley and the plate-lifting mechanism of a river sludge treatment filter press device of the present invention.

[0029] Figure 3 It is a schematic diagram of the splitting of the support plate and the bottom-mounted pipe of a river sludge treatment filter press device of the present invention.

[0030] Figure 4 It is an exploded view of the gas transmission mechanism of a river sludge treatment filter press device of the present invention.

[0031] Figure 5 It is a cross-sectional view of the insertion connecting pipe of a river sludge treatment filter press device of the present invention.

[0032] Figure 6 It is an exploded view of the plate-lifting mechanism of a river sludge treatment filter press device of the present invention.

[0033] Figure 7 It is an exploded view of the blowing plate mechanism of a river sludge treatment filter press device of the present invention.

[0034] Figure 8 It is a cross-sectional view of the U-shaped conduit, connecting air pipe, and socket of a river sludge treatment filter press device of the present invention.

[0035] Figure 9 This is an exploded view of the cake ejection mechanism of a river sludge treatment filter press device of the present invention.

[0036] In the figure: 1. Filter press body; 2. Filter plate frame; 201. Frustum rib; 3. Pulling plate trolley; 4. Plate lifting mechanism; 5. Air transmission mechanism; 6. Plate blowing mechanism; 7. Cake ejection mechanism; 8. Strip-shaped plate; 9. Support table; 10. Electric push rod; 11. Side plate; 12. Lifting plate; 13. Inclined limit plate; 14. Rubber pad; 15. Support plate; 16. Bottom-mounted pipe; 17. Bottom connecting pipe; 18. Threaded pipe; 19. L-shaped flat pipe; 20. Insertion connecting pipe; 21. Vertical guiding pipe; 22. Alignment groove; 23. Alignment cover plate; 24. U-shaped conduit; 25. Connecting air pipe; 26. Connecting seat; 27. U-shaped guiding groove; 28. Inner ring groove; 29. Inner fixing ring; 30. Support block; 31. Missing groove; 32. Bullet hole; 33. Spring; 34. T-shaped bullet column; 35. Sealing ring. Detailed implementation manners

[0037] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0038] As Figures 1-9 shown, a river sludge treatment filter press device includes a filter press body 1, a filter plate frame 2 and a pulling plate trolley 3. A filter plate frame 2 is slidably installed between the frames of the filter press body 1, and a pulling plate trolley 3 for pulling the filter plate frame 2 is installed at the side guide rail of the filter press body 1. It also includes a plate lifting mechanism 4, an air transmission mechanism 5, a plate blowing mechanism 6 and a cake ejection mechanism 7. A plate lifting mechanism 4 for supporting and lifting the filter plate frame 2 is installed outside the side shell of the pulling plate trolley 3, and an air transmission mechanism 5 for actively guiding air is installed at the plate lifting mechanism 4 through a support plate 15. A plate blowing mechanism 6 for vertically blowing air in cooperation with the air transmission mechanism 5 is provided at the top of the filter plate frame 2, and a frustum rib 201 protrudes from the surface of the filter plate frame 2. A cake ejection mechanism 7 for ejecting the mud cake is provided at the frustum rib 201.

[0039] Among them, the plate lifting mechanism 4 includes a strip-shaped plate 8, a support table 9, an electric push rod 10, a lifting plate 12 and an inclined limit plate 13. The strip-shaped plate 8 is locked to the outside of the side shell of the pulling plate trolley 3 by bolts, and a support table 9 is welded to the top of the strip-shaped plate 8. An electric push rod 10 is installed below the table groove of the support table 9, and the telescopic rod of the electric push rod 10 passes upward through the table groove of the support table 9. A lifting plate 12 for lifting the filter plate frame 2 is installed at the head of the telescopic rod of the electric push rod 10 passing through the support table 9. Inclined limit plates 13 for restricting the filter plate frame 2 are symmetrically fixed on both sides of the plate body of the lifting plate 12;

[0040] By adopting the above preferred technical solutions, the following effects can be achieved. After the strip board 8 of the lifting plate mechanism 4 is installed at the pulling plate trolley 3 by bolt locking, the outer side of the strip board 8 can support the electric push rod 10 through the supporting table 9. Then, a lifting plate 12 can be installed at the telescopic rod head of the electric push rod 10 passing through the supporting table 9. When the pulling plate trolley 3 slides on the side guide rail of the filter press body 1 for the pulling plate operation of the filter plate frame 2, the electric push rod 10 can move along. Then, the electric push rod 10 can push the lifting plate 12 to lift and lower. The lifting plate 12 cooperates with the inclined limiting plate 13 to support and lift the side blocks of the filter plate frame 2. At the same time, the two groups of pulling plate trolleys 3 on both sides of the filter press body 1 can be staggered by a certain distance, so that the filter plate frame 2 can be lifted and shaken, ensuring that the mud cake after the river sludge is filtered can be shaken off after the filter cloth is sleeved on the outer side of the filter plate frame 2. And when the filter plate frame 2 is lifted and shaken, there is an inclined limiting plate 13 at the lifting plate 12 for counter-directional limiting, which can prevent the filter plate frame 2 from slipping outwards.

[0041] Among them, side plates 11 are symmetrically welded outside the shell of the electric push rod 10, and the side plates 11 and the lower table surface of the supporting table 9 are locked by bolts. Threaded holes for vertically screwing bolts are provided on the surface of the telescopic rod head of the electric push rod 10 and the lifting plate 12.

[0042] By adopting the above preferred technical solutions, the following effects can be achieved. After the side plates 11 are welded outside the shell of the electric push rod 10, the side plates 11 can obtain support by being locked by bolts below the supporting table 9. Then, bolts can be screwed between the lifting plate 12 and the electric push rod 10 for locking connection, ensuring that the electric push rod 10 can push the lifting plate 12 to rise.

[0043] Among them, a supporting plate 15 for supporting the air transmission mechanism 5 is welded outside the arc plate edge of the lifting plate 12 away from the inclined limiting plate 13. The air transmission mechanism 5 includes a bottom-mounted pipe 16, a bottom connecting pipe 17, an L-shaped flat pipe 19, an inserted connecting pipe 20 and a vertical guiding pipe 21. The bottom-mounted pipe 16 is welded at the supporting plate 15, and a bottom connecting pipe 17 is screwed and installed at the lower pipe opening of the bottom-mounted pipe 16. The bottom-mounted pipe 16 above the supporting plate 15 is interconnected and welded with the inserted connecting pipe 20 through the L-shaped flat pipe 19, and a vertical guiding pipe 21 for vertically exhausting air in cooperation with the blowing plate mechanism 6 is interconnected and welded at the head pipe opening of the inserted connecting pipe 20.

[0044] By adopting the above preferred technical solutions, the following effects can be achieved. After the supporting plate 15 is welded at the arc plate edge of the lifting plate 12, the bottom-mounted pipe 16 can be inserted and welded at the supporting plate 15. A bottom connecting pipe 17 can be installed below the bottom-mounted pipe 16 to connect the hose of the external air supply equipment. At the same time, the bottom-mounted pipe 16 can be connected to the inserted connecting pipe 20 through the L-shaped flat pipe 19. When the electric push rod 10 of the lifting plate mechanism 4 brings the lifting plate and the supporting plate 15 to rise, the inserted connecting pipe 20 can cooperate with the vertical guiding pipe 21 to be inserted into the socket 26 of the blowing plate mechanism 6 for temporary air supply and downward blowing.

[0045] The blowing plate mechanism 6 includes a fixed groove 22, a cover plate 23, a U-shaped conduit 24, an air connection pipe 25 and a connector 26. The top of the filter press plate frame 2 is symmetrically provided with a fixed groove 22 that communicates with the plate groove, and a cover plate 23 is fixed in the fixed groove 22. A U-shaped conduit 24 is clamped between the cover plate 23 and the fixed groove 22, and the top of the U-shaped conduit 24 is welded to the connector 26 through the air connection pipe 25. The side seat surface of the connector 26 is provided with a U-shaped guide groove 27 for clamping the vertical guide pipe 21.

[0046] By adopting the above-mentioned preferred technical solution, the following effects can be achieved. After the fixed groove 22 of the blowing plate mechanism 6 is set at the filter press plate frame 2, the cover plate 23 can be fixed in the fixed groove 22, and then the U-shaped guide tube 24 can be inserted between the cover plate 23 and the fixed groove 22 for installation. The socket 26 connected with the air pipe 25 above the U-shaped guide tube 24 is temporarily inserted into the vertical guide tube 21 through the U-shaped guide groove 27 for air supply, so that the compressed gas can enter the filter press plate frame 2 from the U-shaped guide tube 24. If a filter cloth is installed outside the filter press plate frame 2 for filtering to produce a mud cake, the filter cloth can be blown to help the mud cake fall off better.

[0047] Among them, the inner ring groove 28 of the spring mechanism 7 is opened in the truncated cone rib 201 below the fixed groove 22, and the spring mechanism 7 includes the inner ring groove 28, the inner fixed ring 29, the support block 30, the notch 31, the bullet hole 32, the spring 33 and the T-shaped elastic column 34. The notch of the inner ring groove 28 and the surface of the truncated cone rib 201 are opened with a notch 31, and the inner fixed ring 29 is clamped in the inner ring groove 28. The outer ring body of the inner fixed ring 29 protrudes with a support block 30 for clamping into the inner ring groove 28, and a bullet hole 32 for clamping the spring 33 is opened between the central groove wall of the inner ring groove 28 and the truncated cone rib 201. A T-shaped elastic column 34 for passing through the inner fixed ring 29 is clamped in the bullet hole 32 on one side of the spring 33.

[0048] When the filter press plate frame 2 loses pressure and separates from each other, the T-shaped elastic column 34 can pop out the inner fixed ring 29 and resist the filter cloth under the support of the spring 33, so that the mud cake can be removed from the filter cloth.

[0049] Among them, a ring convex surface protrudes from the middle of the ring body of the inner fixing ring 29, and the diameter of the ring hole of the inner fixing ring 29 is the same as the diameter of the column body of the T-shaped elastic column 34. A tail plate is fixed behind the column body of the T-shaped elastic column 34, and the diameter of the tail plate of the T-shaped elastic column 34 is greater than the diameter of the ring hole of the inner fixing ring 29. A sealing ring 35 for abutting against the inner fixing ring 29 is sleeved outside the column body of the T-shaped elastic column 34;

[0050] By adopting the above preferred technical solutions, the following effects can be achieved. After a filter cloth is sleeved outside the filter plate frame 2, the inner fixing ring 29 with a ring convex surface can lift the filter cloth, and then the T-shaped elastic column 34 can eject from the inner fixing ring 29. When the T-shaped elastic column 34 ejects from the inner fixing ring 29, the sealing ring 35 can increase the sealing performance of the T-shaped elastic column 34 at the inner fixing ring 29.

[0051] Among them, threaded pipes 18 are fixed at both ends of the pipe orifice of the bottom connecting pipe 17, and the threaded pipe 18 on one side of the bottom connecting pipe 17 is screwed into the lower part of the bottom mounting pipe 16;

[0052] By adopting the above preferred technical solutions, the following effects can be achieved. Threaded pipes 18 are arranged at both ends of the bottom connecting pipe 17, and then the bottom connecting pipe 17 can be connected in series with the lower part of the bottom mounting pipe 16 by screwing the threaded pipe 18. At the same time, the threaded pipe 18 at the other end of the bottom connecting pipe 17 can be screwed into the hose joint of an external air supply device for air supply connection.

[0053] Among them, a rubber pad 14 is adhered to the surface of the lifting plate 12 between the inclined limiting plates 13, and the thickness of the pad body of the rubber pad 14 is less than the height of the plate body of the inclined limiting plates 13;

[0054] By adopting the above preferred technical solutions, the following effects can be achieved. The lifting plate 12 between the inclined limiting plates 13 and the rubber pad 14 can elastically support the filter plate frame 2. The design of the rubber pad 14 improves the friction between the lifting plate 12 and the filter plate frame 2, making the lifting process more stable. The rubber pad 14 has a certain elasticity and can buffer the impact between the lifting plate 12 and the filter plate frame 2, protecting the filter plate frame 2 from damage.

[0055] It should be noted that the present invention is a river sludge treatment pressure filtration device. After a blowing plate mechanism 6 and a cake ejecting mechanism 7 are arranged at the filter plate frame 2 of the filter press body 1, a lifting plate mechanism 4 is arranged at the pulling plate trolley 3, and the lifting plate mechanism 4 is supported by a support plate 15 for a gas transmission mechanism 5;

[0056] The strip-shaped plate 8 of the lifting plate mechanism 4 is installed at the pulling plate trolley 3 by bolt locking. The outer side of the strip-shaped plate 8 can support the electric push rod 10 through the support table 9. Then, a lifting plate 12 can be installed at the telescopic rod head of the electric push rod 10 passing through the support table 9. The support plate 15 fixed at the lifting plate 12 can be welded to the bottom mounting pipe 16 of the air transmission mechanism 5. After the bottom connecting pipe 17 below the bottom mounting pipe 16 is connected to the hose of the external air supply equipment, the L-shaped flat pipe 19 above the bottom mounting pipe 16 can be connected to the vertical guiding pipe 21 through the insertion connecting pipe 20 for air supply;

[0057] And the spring 33 of the cake ejecting mechanism 7 can be placed into the bullet hole 32 from the inner ring groove 28. Then, the T-shaped bullet column 34 can be clamped into the bullet hole 32 from the inner ring groove 28 to compress the spring 33. Then, the inner fixing ring 29 can be sleeved outside the T-shaped bullet column 34. Next, the support block 30 of the inner fixing ring 29 can be clamped into the inner ring groove 28 from the notch 31 for rotation, so that the support block 30 can be rotated into the inner ring groove 28 for anti-retreat. The alignment cover plate 23 can be fixed in the alignment groove 22 of the blowing plate mechanism 6. Then, a U-shaped conduit 24 can be clamped between the alignment cover plate 23 and the alignment groove 22 for installation. The socket 26 connected by the connecting air pipe 25 above the U-shaped conduit 24 is temporarily clamped into the vertical guiding pipe 21 through the U-shaped guiding groove 27 for air supply;

[0058] Then, the filter cloth can be sleeved on the filter plate frame 2 provided with the cake ejecting mechanism 7 and the blowing plate mechanism 6. Then, the filter plate frames 2 of the filter press body 1 can be pressed one by one. Then, the river sludge slurry is sent into the filter press body 1 by a slurry pump. When the slurry is pumped, the appropriately concentrated anionic (cationic) flocculant solution added is mixed with the slurry and reacts fully, so that the tiny solid particles coagulate into larger flocculent lumps. Then, the slurry is filtered and dewatered at the filter plate frame 2 sleeved with the filter cloth in the filter press body 1. After the sludge reaches the squeezing and dewatering area, the filter plate frames 2 form a closed filter chamber under the push of the pulling plate trolley 3. At this time, by applying a certain pressure (such as the pressure of a high-pressure pump), the liquid in the sludge is forced to pass through the filter cloth, and at the same time, the solid particles gradually accumulate on the filter medium to form a filter cake. Then, the water pressed out at the filter plate frame 2 can be discharged downward;

[0059] When the filter press plate frame 2 with a filter cloth sleeved squeezes the sludge cake, the T-shaped elastic column 34 can enter the ring hole of the inner fixed ring 29 and compress the spring 33 to obtain elastic force. After the river sludge filtration is completed, the hydraulic structure of the filter press body 1 leaves the filter press plate frame 2, and the pull plate trolley 3 is configured with a transmission structure to slide outside the filter press body 1. Then, a set of movable plates on the pull plate trolley 3 hits the edge of the filter press plate frame 2 and then descends through and abuts against the edge of the filter press plate frame 2. At this time, the two sets of movable plates above the pull plate trolley 3 can hold the filter press plate frame 2 and pull it outwards. After pulling to a certain distance and stopping, the electric push rod 10 can push the lifting plate 12 to rise. At this time, the air transmission mechanism 5 also rises. Then, the pull plate trolley 3 moves and the vertical pipe 21 of the air transmission mechanism 5 is stuck into the U-shaped guide groove 27 of the socket 26 for blowing air. The gas enters the connecting air pipe 25 downward through the socket 26 and is sprayed into the groove of the filter press plate frame 2 below the U-shaped duct 24. Then, the filter cloth outside the filter press plate frame 2 is blown, and looseness appears between the auxiliary sludge cake and the filter cloth;

[0060] And when the filter press plate frames 2 lose pressure and separate from each other, the T-shaped elastic column 34 can pop out of the inner fixed ring 29 under the support of the spring 33 and abut against the filter cloth, and looseness appears between the auxiliary sludge cake and the filter cloth;

[0061] Then the lifting plate 12 continues to rise to lift the filter press plate frame 2 in cooperation with the rubber pad, so that the vertical pipe 21 is pulled out of the socket 26 upwards. Then, the lifting plate 12 and the inclined limiting plate 13 can support and lift the side blocks of the filter press plate frame 2 for lifting and lowering. At the same time, the two sets of pull plate trolleys 3 on both sides of the filter press body 1 can be staggered by a certain distance, so that the filter press plate frame 2 can be lifted and shaken, ensuring that the sludge cake after river sludge filtration can be shaken off outside the filter press plate frame 2 after the filter cloth is sleeved. And when the filter press plate frame 2 is lifted and shaken, there is an inclined limiting plate 13 at the lifting plate 12 for opposite limiting, which can prevent the filter press plate frame 2 from slipping outwards, so that the sludge cake can be detached from the filter cloth. At this time, the lifting plate 12 can descend and leave the filter press plate frame 2. Then, the pull plate trolley 3 pulls away the filter press plate frame 2 at the side guide rail of the filter press body 1. When the other set of movable plates of the pull plate trolley 3 is stressed by the edge of the head plate of the hydraulic structure for pressing near the filter press body 1 and is pressed down, at this time, the pull plate trolley 3 moves towards the subsequent filter press plate frame 2, and the pressed-down movable plate can pass through the edge of the first set of filter press plate frames 2 and continue the operation of pulling the plate to remove the sludge. When the second set of filter press plate frames 2 and the subsequent filter press plate frames 2 remove the sludge, the pull plate trolley 3 can obtain the downward passing force at the edges of the first set of filter press plate frames 2 and the subsequent filter press plate frames 2 after de-sludging, so as to ensure that the pull plate trolley 3 can perform the pulling plate operation through the edges of the de-sludged filter press plate frames 2. The components of the elastic cake mechanism 7 can be maintained and cleaned regularly to ensure its normal operation.

[0062] It should be noted that the present invention is a filter press device for river sludge treatment. The components in the present invention are all components known to those skilled in the art, and their structures and principles can all be known by those skilled in the art through technical manuals or through conventional experimental methods.

[0063] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A filter press device for treating river sludge, comprising a filter press body (1), a filter press plate frame (2) and a plate pulling trolley (3), wherein the filter press plate frame (2) is slidably mounted between the frames of the filter press body (1), and a plate pulling trolley (3) for pulling the filter press plate frame (2) is mounted on the side guide rails of the filter press body (1), characterized in that: It also includes a plate lifting mechanism (4), an air transmission mechanism (5), a plate blowing mechanism (6) and a cake-bounce mechanism (7), wherein a plate lifting mechanism (4) for supporting and lifting the filter plate frame (2) is installed outside the side shell of the plate pulling trolley (3), and an air transmission mechanism (5) for movable air introduction is installed at the plate lifting mechanism (4) through a support plate (15), a plate blowing mechanism (6) for cooperating with the air transmission mechanism (5) for vertical air blowing is provided at the top of the filter plate frame (2), and a round cone rib (201) is raised on the surface of the filter plate frame (2), and a cake-bounce mechanism (7) for supporting the mud cake is provided at the round cone rib (201); The plate lifting mechanism (4) includes a strip plate (8), a support platform (9), an electric push rod (10), a lifting plate (12) and an inclined limiting plate (13), wherein the strip plate (8) is locked to the outside of the side shell of the plate pulling trolley (3) by bolts, and the support platform (9) is welded to the top of the strip plate (8), an electric push rod (10) is installed below the table groove of the support platform (9), and the telescopic rod of the electric push rod (10) passes through the table groove of the support platform (9) upward, and a lifting plate (12) for lifting the filter press plate frame (2) is installed at the telescopic rod head of the electric push rod (10) passing through the support platform (9), and inclined limiting plates (13) for limiting the filter press plate frame (2) are symmetrically fixed on both sides of the plate body of the lifting plate (12); A support plate (15) for supporting the gas transmission mechanism (5) is welded to the outer side of the arc plate of the lifting plate (12) away from the inclined limiting plate (13). The gas transmission mechanism (5) includes a bottom-mounted pipe (16), a bottom connecting pipe (17), an L-shaped flat pipe (19), a plug-in pipe (20) and a vertical guide pipe (21). The bottom-mounted pipe (16) is welded to the support plate (15), and the bottom connecting pipe (17) is screwed and installed at the lower pipe mouth of the bottom-mounted pipe (16). The bottom-mounted pipe (16) above the support plate (15) is interconnected and welded with the plug-in pipe (20) through the L-shaped flat pipe (19), and the vertical guide pipe (21) for cooperating with the blowing plate mechanism (6) to perform vertical exhaust is interconnected and welded at the head pipe mouth of the plug-in pipe (20).

2. A filter press device for treating river sludge according to claim 1, characterized in that: Side plates (11) are symmetrically welded to the outside of the housing of the electric push rod (10), and the side plates (11) are locked with the lower surface of the support platform (9) by bolts. The telescopic rod head of the electric push rod (10) and the surface of the lifting plate (12) are provided with threaded holes for vertically screwing bolts.

3. The filter press device for treating river sludge according to claim 1, characterized in that: The blowing plate mechanism (6) comprises a fixed groove (22), a cover plate (23), a U-shaped conduit (24), an air connection pipe (25) and a connecting seat (26). The top of the filter press plate frame (2) is symmetrically provided with a fixed groove (22) that communicates with the plate groove, and a cover plate (23) is fixed in the fixed groove (22). A U-shaped conduit (24) is clamped between the cover plate (23) and the fixed groove (22), and the top end of the U-shaped conduit (24) is welded to the connecting seat (26) through the air connection pipe (25). A U-shaped guide groove (27) for clamping the vertical guide pipe (21) is provided on the side seat surface of the connecting seat (26).

4. A filter press device for treating river sludge according to claim 3, characterized in that: An inner ring groove (28) of a spring mechanism (7) is provided in the truncated cone rib (201) below the fixed groove (22), and the spring mechanism (7) comprises an inner ring groove (28), an inner fixed ring (29), a support block (30), a notch (31), a bullet hole (32), a spring (33) and a T-shaped spring column (34). The notch of the inner ring groove (28) and the surface of the truncated cone rib (201) are provided with a notch (31), and the inner fixed ring (29) is clamped in the inner ring groove (28). The outer ring body of the inner fixed ring (29) is protruded with a support block (30) for clamping into the inner ring groove (28), and a bullet hole (32) for clamping the spring (33) is provided between the central groove wall of the inner ring groove (28) and the truncated cone rib (201), and a T-shaped spring column (34) for penetrating the inner fixed ring (29) is clamped in the bullet hole (32) on one side of the spring (33).

5. The filter press device for treating river sludge according to claim 4, characterized in that: The inner fixed ring (29) has a raised annular convex surface in the middle of the ring body, and the diameter of the ring hole of the inner fixed ring (29) is the same as the diameter of the column body of the T-shaped elastic column (34). A tail plate is fixed behind the column body of the T-shaped elastic column (34), and the diameter of the tail plate of the T-shaped elastic column (34) is larger than the diameter of the ring hole of the inner fixed ring (29). The outer sleeve of the column of the T-shaped elastic column (34) has a sealing ring (35) for resisting the inner fixed ring (29).

6. The filter press device for treating river sludge according to claim 1, characterized in that: Threaded tubes (18) are fixed at both ends of the tube opening of the bottom tube (17), and the threaded tube (18) on one side of the bottom tube (17) is screwed into the bottom of the bottom mounting tube (16).

7. The filter press device for treating river sludge according to claim 1, characterized in that: A rubber pad (14) is bonded to the surface of the lifting plate (12) between the inclined limiting plates (13), and the pad thickness of the rubber pad (14) is smaller than the plate height of the inclined limiting plates (13).

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