A filter cake pushing device for a sludge press for sewage treatment and its usage method

Abstract

The present invention discloses a filter cake pushing device for a sewage treatment filter press and its usage method, which includes a fixed base, a pushing guide column slidably connected to the fixed base, and a power mechanism for driving the pushing guide column to slide back and forth. An installation plate is fixedly connected to the front end of the pushing guide column, and a pushing plate assembly is installed in front of the installation plate. The pushing plate assembly includes a front frame slidably connected to the installation plate back and forth and a plurality of turning plates arranged vertically. The plurality of turning plates form a coplanar pushing plate. It also includes a vertical tooth column slidably connected to the front frame vertically. A turning gear meshing with the vertical tooth column is fixedly connected to the end of the turning plate. A limiting stop block adapted to the front frame is fixedly connected to the fixed base. When the front frame moves backward and contacts the limiting stop block, the front frame is separated from the installation plate. A driving rack extending back and forth is fixedly connected to the installation plate. When the front frame is separated from the installation plate, the driving rack drives the vertical tooth column to rise and fall through a gear assembly installed on the front frame.

Description

Technical Field

[0001] The present invention relates to the field of sewage treatment, and specifically to a filter cake pushing device for a filter press in sewage treatment and its usage method. Background Art

[0002] A filter press is a mechanical device that uses a special filtering medium to apply a certain pressure to an object so that the liquid can be dialyzed out. It is a commonly used solid-liquid separation device in a sewage treatment system.

[0003] Especially for the treatment of sewage sludge in the environmental protection industry, most of the current filter presses adopt the plate-frame type filtering method, that is, the squeezing force applied to the sludge being filtered is in the horizontal direction. After the squeezing is completed, the filter plates are sequentially opened one by one through an opening plate mechanism to unload the sludge, so that the filter cake between the filter plates falls onto the platform below, and then the filter cake is horizontally pushed out below the filter press through a pushing device, or directly pushed onto a belt conveyor.

[0004] According to the current sludge treatment technology, during the process of opening the plates to unload the sludge in the filter press, some filter cakes have a high organic content and water content, and the formed filter cake is easily adhered to the push plate of the pushing device, resulting in a large amount of filter cake adhered to the push plate, thus making it impossible to continue pushing. It can only be removed manually with a shovel, which is time-consuming, laborious, and has low efficiency. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A filter cake pushing device for a filter press in sewage treatment according to the present invention includes a fixed base, a pushing guide column slidably connected to the fixed base, and a power mechanism for driving the pushing guide column to slide back and forth. The front end of the pushing guide column is fixedly connected with a mounting plate, and a push plate assembly is installed in front of the mounting plate. The push plate assembly includes a front frame slidably connected back and forth on the mounting plate and a plurality of turning plates arranged vertically. The turning plates extend horizontally and are hinged to the front frame through a horizontal hinge shaft. The plurality of turning plates are coplanar to form a push plate. It also includes a vertical tooth column slidably connected vertically to the front frame. A turning gear meshing with the vertical tooth column is fixedly connected to the end of the turning plate. A limit stop block adapted to the front frame is fixedly connected to the fixed base. When the front frame moves backward and contacts the limit stop block, the front frame is separated from the mounting plate. A driving rack extending back and forth is fixedly connected to the mounting plate. When the front frame is separated from the mounting plate, the driving rack drives the vertical tooth column to rise and fall through a gear assembly installed on the front frame.

[0007] As a preferred technical solution of the present invention, it further includes a spring for pushing the front frame to fit with the mounting plate.

[0008] As a preferred technical solution of the present invention, a buffer pad is installed between the front frame and the mounting plate.

[0009] As a preferred technical solution of the present invention, the power mechanism includes a pushing oil cylinder installed on a fixed base, and a telescopic shaft of the pushing oil cylinder is connected to a pushing guide post.

[0010] As a preferred technical solution of the present invention, a guide sleeve sleeved on the pushing guide post is fixedly connected to the fixed base.

[0011] As a preferred technical solution of the present invention, the front frame includes two vertical side beam pipes. The upper ends of the two side beam pipes are connected by an upper baffle, the lower ends of the two side beam pipes are connected by a lower pushing plate, and vertical tooth columns and flipping gears are installed in both of the two side beam pipes.

[0012] As a preferred technical solution of the present invention, the gear assembly includes a tooth column gear axially connected to the front frame and a rack gear fixedly connected to the tooth column gear. The tooth column gear meshes with the vertical tooth column, and the rack gear meshes with a driving rack.

[0013] As a preferred technical solution of the present invention, the diameter of the tooth column gear is larger than that of the rack gear.

[0014] As a preferred technical solution of the present invention, the hinge shaft of the flap and the front frame passes through the center of the flap.

[0015] A using method of a filter cake pushing device for a filter press for sewage treatment includes the following steps: a. Driving the pushing guide post to slide back and forth through the power mechanism. When pushing the material, multiple flaps in the pushing plate assembly form a coplanar pushing plate, and the mounting plate at the front end of the pushing guide post pushes the pushing plate assembly forward to realize material pushing;

[0016] b. After the material pushing is completed, the mounting plate and the pushing plate assembly move backward. After the front frame of the pushing plate assembly moves backward and contacts the limit stop block, the front frame is separated from the mounting plate;

[0017] c. After the front frame is separated from the mounting plate, the driving rack moves backward relative to the front frame, and the driving rack drives the vertical tooth column to rise and fall through the gear assembly installed on the front frame;

[0018] d. The vertical tooth column drives the flipping gear at the end of the flap to rotate, thereby realizing the flipping of the flap and making the large filter cake adhered to the flap fall off.

[0019] The beneficial effects of the present invention are as follows: In the present application, material pushing is realized by multiple flaps forming a coplanar pushing plate. After the material pushing is completed, all the flaps can be automatically flipped, so that the large filter cake adhered to the flaps falls off. When pushing the material again, the flaps can automatically return to their positions, thereby continuing to realize the pushing of the filter cake. The present invention can effectively prevent the adhesion of the filter cake on the pushing plate, and is realized through a mechanical structure without an additional power system, and the structure is stable. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the pushing state of the present invention;

[0021] Figure 2 It is a schematic diagram of the retracting state of the present invention;

[0022] Figure 3 It is an internal schematic diagram of the push plate assembly in the pushing state of the present invention;

[0023] Figure 4 It is an internal schematic diagram of the push plate assembly in the retracting state of the present invention;

[0024] Figure 5 It is the present invention Figure 4 Cross-sectional view of plane A-A in;

[0025] Figure 6 It is the present invention Figure 4 Cross-sectional view of plane B-B in;

[0026] Figure 7 It is the present invention Figure 6 Cross-sectional view of plane C-C in;

[0027] In the figure: 1. Fixed base, 2. Push plate assembly, 3. Mounting plate, 4. Guide post, 5. Spring, 6. Spring end plate, 7. Buffer pad, 8. Limit stop, 9. Pushing guide post, 10. Guide sleeve, 11. Pushing oil cylinder, 21. Side beam pipe, 22. Flap, 23. Tipping gear, 24. Upper baffle, 25. Lower pushing plate, 26. Vertical tooth column, 27. Tooth column gear, 28. Driving rack, 29. Rack gear. Detailed implementation manners

[0028] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.

[0029] As Figures 1-7 shown, a filter cake pushing device for a filter press used in sewage treatment according to the present invention includes a fixed base 1, a pushing guide post 9 slidably connected to the fixed base 1, and a power mechanism for driving the pushing guide post 9 to slide back and forth. The pushing guide post 9 is a horizontally arranged square column. A guide sleeve 10 sleeved on the pushing guide post 9 is fixedly connected to the fixed base 1. There are two guide sleeves 10, which play a guiding role for the pushing guide post 9. A self-lubricating bearing is installed between the pushing guide post 9 and the guide sleeve 10 to reduce friction.

[0030] The power mechanism includes a pushing oil cylinder 11 installed on the fixed base 1. The telescopic shaft of the pushing oil cylinder 11 is connected to the pushing guide post 9. In this embodiment, the telescopic shaft of the pushing oil cylinder 11 is connected to the rear end of the pushing guide post 9.

[0031] A mounting plate 3 is fixedly connected to the front end of the pushing guide post 9. The mounting plate 3 is a square plate and is perpendicular to the pushing guide post 9.

[0032] A push plate assembly 2 is installed in front of the mounting plate 3. The push plate assembly 2 includes a front frame that is slidably connected to the mounting plate 3 in the front and rear directions and a plurality of flap plates 22 arranged vertically. A plurality of guide posts 4 extending in the front and rear directions are fixedly connected to the rear end of the front frame. The guide posts 4 pass through the mounting plate 3, thereby realizing the front and rear sliding connection of the front frame.

[0033] A buffer pad 7 is installed between the front frame and the mounting plate 3, so as to play a buffering role when the mounting plate 3 pushes the front frame forward.

[0034] The flap plate 22 extends horizontally and the flap plate 22 is hinged to the front frame through a horizontal hinge shaft. A plurality of flap plates 22 are coplanar to form a push plate. The flap plate 22 is a long strip plate, and the hinge shaft of the flap plate 22 and the front frame passes through the center of the flap plate 22. When the front frame is in contact with the mounting plate 3, a plurality of flap plates 22 are coplanar to form a push plate.

[0035] In this embodiment, the front frame includes two vertical side beam pipes 21. The upper ends of the two side beam pipes 21 are connected by an upper baffle plate. The upper baffle plate 24 is vertically arranged, and the front end face of the upper baffle plate is flush with the front end face of the side beam pipe 21.

[0036] The lower ends of the two side beam pipes 21 are connected by a lower pushing plate 25. The front end face of the lower pushing plate 25 is located in front of the front end face of the side beam pipe 21, and the front end face is an inclined surface, which is convenient for shoveling up the filter cake at the bottom and pushing it forward.

[0037] In this embodiment, the flap plate 22 is located between the two side beam pipes 21. Hinge rotating shafts are fixedly connected to both ends of the flap plate 22, and the hinge rotating shafts are axially connected to the side beam pipes 21, thereby realizing the hinged turning of the flap plate 22. When all the flap plates 22 are coplanar, the square space formed by the upper baffle plate 24, the lower pushing plate 25 and the two side beam pipes 21 in the front frame is filled. When all the flap plates 22 turn together, the large filter cakes sticking to the front surface of the turning 22 can fall off.

[0038] It also includes a vertical tooth column 26 that is slidably connected to the front frame vertically. The vertical tooth column 26 is installed in both of the two side beam pipes 21. A guide sleeve sleeving the lower end of the vertical tooth column 26 is fixedly connected to the lower end inside the side beam pipe 21, and the upper end of the vertical tooth column 26 passes through the upper end of the side beam pipe 21. Thereby realizing the vertical sliding guiding of the vertical tooth column.

[0039] A turning gear 23 meshing with the vertical tooth column 26 is fixedly connected to the end of the flap plate 22. The turning gears 23 are installed at both ends of the flap plate 22. Therefore, the turning gears 23 are installed in both of the two side beam pipes 21 and are respectively meshed with the two vertical tooth columns 26.

[0040] A limit stop block 8 adapted to the front frame is fixedly connected to the fixed base 1. After the front frame moves backward and contacts the limit stop block 8, the front frame is separated from the mounting plate 3. The limit stop block 8 is fixedly connected to the lower front end of the fixed base 1, and the lower end of the front frame is lower than the lower end of the mounting plate 3, so that the mounting plate 3 will not contact the limit stop block 8.

[0041] A driving rack 28 extending forward and backward is fixedly connected to the mounting plate 3. When the front frame is separated from the mounting plate 3, the driving rack 28 drives the vertical tooth column 26 to move up and down through a gear assembly mounted on the front frame.

[0042] The gear assembly includes a tooth column gear 27 axially connected to the front frame and a rack gear 29 fixedly connected to the tooth column gear 27. The tooth column gear 27 meshes with the vertical tooth column 26, and the rack gear 29 meshes with the driving rack 28. As Figure 6 shown, there are two tooth column gears 27, which respectively mesh with two vertical tooth columns 26. The two tooth column gears 27 are connected through a gear shaft. The gear shaft is axially connected to the upper baffle 24, so as to realize free rotation. The rack gear 29 is fixedly connected to the middle of the gear shaft. The lower end of the driving rack 28 meshes with the rack gear 29. When the driving rack 28 moves away from the front frame, the tooth column gear 27 drives the vertical tooth column 26 to move upward, realizing the flipping of the flap 22.

[0043] The diameter of the tooth column gear 27 is larger than that of the rack gear 29, so as to increase the upward moving distance of the vertical tooth column 26.

[0044] It further includes a spring 5 that pushes the front frame to fit with the mounting plate 3. The spring 5 makes the front frame fit with the mounting plate 3. After the push plate assembly 2 is pushed forward and the front frame is separated from the limit stop block 8, the front frame can be made to fit with the mounting plate 3 through the action of the spring 5, so that all the flaps 22 are coplanar to form a push plate, facilitating continuous forward material pushing.

[0045] The spring 5 is sleeved on the guide post 4. A spring end plate 6 is fixedly connected to the end of the guide post 4 far from the front frame. The two ends of the spring 5 respectively abut against the spring end plate 6 and the mounting plate 3, thereby pushing the front frame to fit with the mounting plate 3.

[0046] A method for using a filter cake pushing device of a filter press for sewage treatment includes the following steps: a. Driving the pushing guide post 9 to slide back and forth through a power mechanism. When pushing materials, multiple flaps 22 in the push plate assembly 2 are coplanar to form a push plate, and the mounting plate 3 at the front end of the pushing guide post 9 pushes the push plate assembly 2 forward to realize material pushing; b. After the material pushing is completed, the mounting plate 3 and the push plate assembly 2 move backward. After the front frame of the push plate assembly 2 moves backward and contacts the limit stop block 8, the front frame is separated from the mounting plate 3;

[0047] c. After the front frame is separated from the mounting plate 3, the driving rack 28 moves backward relative to the front frame, and the driving rack 28 drives the vertical tooth column 26 to move up and down through a gear assembly mounted on the front frame;

[0048] d. The vertical tooth column 26 drives the turning gear 23 at the end of the turning plate 22 to rotate, thereby realizing the turning of the turning plate 22 and causing the large filter cakes adhered to the turning plate 22 to fall off.

[0049] Finally, it should be noted that in the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0050] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0051] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A filter cake pushing device for sewage treatment by a filter press, characterized in that: It includes a fixed base (1), a pushing guide column (9) slidably connected to the fixed base (1), and a power mechanism for driving the pushing guide column (9) to slide back and forth. An installation plate (3) is fixedly connected to the front end of the pushing guide column (9). A pushing plate assembly (2) is installed in front of the installation plate (3). The pushing plate assembly (2) includes a front frame slidably connected to the installation plate (3) back and forth and a plurality of turning plates (22) arranged vertically. The turning plates (22) extend horizontally and the turning plates (22) are hinged to the front frame through a horizontal hinge shaft. The plurality of turning plates (22) are coplanar to form a pushing plate. It also includes a vertical tooth column (26) slidably connected to the front frame vertically. A turning gear (23) meshing with the vertical tooth column (26) is fixedly connected to the end of the turning plate (22). A limit stop block (8) adapted to the front frame is fixedly connected to the fixed base (1). After the front frame moves backward and contacts the limit stop block (8), the front frame is separated from the installation plate (3). A driving rack (28) extending back and forth is fixedly connected to the installation plate (3). When the front frame is separated from the installation plate (3), the driving rack (28) drives the vertical tooth column (26) to lift and lower through a gear assembly installed on the front frame.

2. The filter cake pushing device for sewage treatment by a filter press according to claim 1, characterized in that: It also includes a spring (5) for pushing the front frame to fit with the installation plate (3).

3. The filter cake pushing device for sewage treatment by a filter press according to claim 1, characterized in that: A buffer pad (7) is installed between the front frame and the installation plate (3).

4. The filter cake pushing device for sewage treatment by a filter press according to claim 1, characterized in that: The power mechanism includes a pushing oil cylinder (11) installed on the fixed base (1), and the telescopic shaft of the pushing oil cylinder (11) is connected to the pushing guide column (9).

5. The filter cake pushing device for sewage treatment by a filter press according to claim 1, characterized in that: A guide sleeve (10) sleeved on the pushing guide column (9) is fixedly connected to the fixed base (1).

6. The filter cake pushing device for sewage treatment by a filter press according to claim 1, characterized in that: The front frame includes two vertical side beam pipes (21). The upper ends of the two side beam pipes (21) are connected by an upper baffle, the lower ends of the two side beam pipes (21) are connected by a lower pushing plate, and a vertical tooth column (26) and a turning gear (23) are installed in both of the two side beam pipes (21).

7. The filter cake pushing device for sewage treatment by a filter press according to claim 1, characterized in that: The gear assembly includes a tooth column gear (27) axially connected to the front frame and a rack gear (29) fixedly connected to the tooth column gear (27). The tooth column gear (27) meshes with the vertical tooth column (26), and the rack gear (29) meshes with the driving rack (28).

8. The filter cake pushing device for sewage treatment by a filter press according to claim 7, characterized in that: The diameter of the tooth column gear (27) is larger than the diameter of the rack gear (29).

9. A filter cake pushing device for a sewage treatment filter press according to claim 1, characterized in that: The hinge shaft of the flap (22) and the front frame passes through the center of the flap (22).

10. A method for using the filter cake pushing device for a sewage treatment filter press according to any one of claims 1-9, characterized in that, comprising the following steps: a. Drive the pushing guide column (9) to slide back and forth through the power mechanism. When pushing the material, multiple flaps (22) in the push plate assembly (2) form a coplanar push plate, and the mounting plate (3) at the front end of the pushing guide column (9) pushes the push plate assembly (2) forward to achieve material pushing; b. After the material pushing is completed, the mounting plate (3) and the push plate assembly (2) move backward. The front frame of the push plate assembly (2) moves backward and contacts the limit stop block (8), and then the front frame is separated from the mounting plate (3); c. After the front frame is separated from the mounting plate (3), drive the rack (28) to move backward relative to the front frame, and the drive rack (28) drives the vertical tooth column (26) to lift and lower through the gear assembly mounted on the front frame; d. The vertical tooth column (26) drives the turning gear (23) at the end of the flap (22) to rotate, thereby realizing the turning of the flap (22) and causing the large filter cake adhered to the flap (22) to fall off.

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