A plate and frame filter press for sludge treatment

Abstract

The present invention relates to the technical field of filter presses, and in particular to a plate-and-frame filter press for sludge treatment. The filter press comprises a filter press frame, a plurality of filter plates are provided on the filter press frame, filter cloths are provided on the filter plates, two brackets are fixedly connected to the filter plates, the brackets are slidably connected to a support frame, the support frame is slidably connected to the filter press frame, a first spring is fixedly connected between the brackets and the support frame, a groove is provided on the bracket, the support frame is slidably connected to a limit block, the upper portion of the limit block is serrated, and the limit block limits the movement of the corresponding bracket through the groove; and two pushers are both slidably connected to the filter press frame. The present invention uses the first spring in the support frame to quickly push the bracket upward, so that the mud cake on the filter plate falls off due to the rapid movement, and the filter cloth is not scraped off, thereby ensuring the integrity of the filter cloth surface and extending the service life of the filter cloth.

Description

Technical Field

[0001] The invention relates to the technical field of filter presses, in particular to a plate-and-frame filter press for sludge treatment. Background Art

[0002] The plate and frame filter press is an advanced environmentally friendly equipment for solid-liquid separation widely used in sewage treatment, chemical industry, food processing and other fields. Its main function is to compress solid particles (such as sludge) suspended in liquid into mud cake by applying pressure and separate clear liquid. However, in the actual operation of the plate and frame filter press, due to reasons such as excessive water content of the mud cake, improper selection of filter cloth material or insufficient cleaning of the filter cloth, the mud cake often remains adsorbed on the filter cloth when the two filter plates are separated. The existing device usually uses a scraper to fit and squeeze the filter cloth. The scraper moves on the surface of the filter cloth to completely scrape off the mud cake adsorbed on the surface of the filter cloth. This operation will cause friction on the surface where the scraper contacts the filter cloth and the mud cake, increase the wear on the filter cloth surface, and thus increase the probability of subsequent mud cake adsorbed on the filter cloth, while reducing the service life of the filter cloth and increasing the cost of filter cloth maintenance and replacement. Summary of the Invention

[0003] Aiming at the problem that the filter cloth is easily damaged when removing the mud cake adsorbed on the filter cloth, the present invention provides a plate and frame filter press for sludge treatment.

[0004] The technical embodiment of the present invention is: a plate and frame filter press for sludge treatment, comprising:

[0005] A filter press frame, wherein a plurality of filter plates are provided on the filter press frame, filter cloths are provided on the filter plates, two brackets are fixedly connected to the filter plates, the brackets are slidably connected to a support frame, the support frame is slidably connected to the filter press frame, a first spring is fixedly connected between the bracket and the support frame, a groove is provided on the bracket, the support frame is slidably connected to a limiting block, the upper part of the limiting block is serrated, and the limiting block limits the movement of the corresponding bracket through the groove;

[0006] Two plate pushers are both slidably connected to the filter press frame, and the plate pushers control the movement of the filter plate by pushing the bracket;

[0007] The control mechanism is arranged on the filter press frame and is used for actively triggering the corresponding two brackets to drive the filter plate to move upward.

[0008] As a preferred embodiment of the present invention, the control mechanism includes:

[0009] A sliding frame is slidably connected to the filter press frame, a support frame is slidably connected to the sliding frame, an electric push rod is provided on the support frame, the telescopic end of the electric push rod is fixedly connected to the sliding frame, the telescopic end of the electric push rod penetrates the support frame, the sliding frame is slidably connected to the support frame, a sliding plate is slidably connected to the support frame, the sliding frame is used to fix the filter plate and push the sliding plate, and the sliding plate is used to squeeze the serrated part of the limit block to release the limit of the bracket;

[0010] Two reset assemblies, respectively provided on the corresponding push plate devices, for actively controlling the plurality of brackets on one side of the corresponding push plate devices to return to their initial positions;

[0011] Two separation components are both arranged on the sliding frame and are used to actively peel off the upper part of the mud cake adsorbed on the filter plate and filter cloth.

[0012] As a preferred embodiment of the present invention, the reset component includes:

[0013] The fixing plate is fixedly connected to the corresponding pushing plate device, and the lower parts of the multiple support frames on the same side of the pushing plate device are slidably connected to a connecting frame, and a sliding block is slidably connected to the connecting frame, and inclined surfaces are provided on the upper and lower sides of the sliding block. The fixing plate is used to squeeze the inclined surface on the lower side of the sliding block, and the connecting frame is fixedly connected to a pull rope, and the upper part of the support frame is slidably connected to the connecting block, and a first tension spring is fixedly connected between the connecting block and the support frame, and the connecting block is fixedly connected to the pull rope, and the connecting block is used to first push the bracket to return to its initial position, and then push the limit block to re-limit the bracket.

[0014] As a preferred embodiment of the present invention, the reset component further includes:

[0015] The number of partition plates is the same as the number of the connecting frames, and they are slidably connected to the corresponding connecting frames. A second tension spring is fixed between the partition plates and the connecting frames. The partition plates are used to hinder the movement of the sliding blocks. The partition plates are fixed with connecting ropes, and the connecting ropes are fixed to the support frames.

[0016] As a preferred embodiment of the present invention, a connecting bent rod is fixedly connected to the sliding plate, a supporting rod is fixedly connected to the lower portion of the sliding block, and the connecting bent rod is used to squeeze the supporting rod.

[0017] As a preferred embodiment of the present invention, a slope is provided on the lower portion of the connecting bent rod, and the lowermost side of the movable range of the connecting bent rod is located above the horizontal plane where the fixing plate is located.

[0018] As a preferred embodiment of the present invention, the separation component includes:

[0019] A rotating bent rod is rotatably connected to the sliding frame, the rotating bent rod is rotatably connected to a plurality of connecting plates, the plurality of connecting plates are rotatably connected to a swing frame, the swing frame is rotatably connected to the sliding frame, a plurality of sliding support plates are slidably connected to the swing frame, and a second spring is fixed between the sliding support plate and the swing frame.

[0020] As a preferred embodiment of the present invention, the difference between the spacing between the two swing frame rotation axes and twice the maximum distance from the sliding support plate to the corresponding swing frame rotation axis is less than the thickness of the filter plate, so that the sliding support plate can slide against the filter cloth and be inserted between the filter cloth and the mud cake, and the lowermost side of the sliding support plate is an arc-shaped surface.

[0021] As a preferred embodiment of the present invention, a rack is provided on the support frame, and the rotating bent rod is fixedly connected to a gear, and the gear is engaged with the rack.

[0022] As the preferred embodiment of the present invention, it also includes:

[0023] The straightening mechanisms, the number of which is the same as the number of the filter plates, are respectively arranged in the corresponding filter plates and are used to actively flatten the filter cloth on the filter plates. The straightening mechanisms include:

[0024] Two limit sliders are both connected to the filter plate in a limited sliding manner. The sliding frame is used to squeeze the limit slider. Four transmission sliders are slidably connected in the filter plate. The transmission slider is used to flatten the surface of the filter cloth on the filter plate. A third tension spring is fixed between two adjacent transmission sliders. Two inclined surfaces are provided on the lower side of the limit slider. The inclined surfaces of the limit slider are used to push the corresponding transmission slider.

[0025] Compared with the prior art, the present invention has the following advantages: 1. The present invention quickly pushes the bracket upward through the first spring in the support frame, so that the filter plate can quickly move to make the mud cake on it fall off, and the filter cloth does not need to be scraped off, thereby ensuring the integrity of the filter cloth surface and extending the service life of the filter cloth.

[0026] 2. The present invention achieves the purpose of dislocating the sliding block from the fixed plate when not working by cooperating with the sliding block and the partition plate in the reset assembly, and enables the separate bracket and support frame to be reset in time after being triggered, thereby ensuring the continuity and stability of the operation of the device.

[0027] 3. The present invention drives the sliding support plate to swing through the swing frame in the separation assembly, so that the sliding support plate slides along the surface of the filter cloth and the upper part of the mud cake adsorbed on the filter cloth is initially peeled off and tilted, reducing the possibility of the mud cake still adsorbed on the filter cloth when the filter plate moves quickly.

[0028] 4. The present invention straightens part of the filter cloth by moving the transmission slider in the straightening mechanism, and assists the sliding support plate to quickly complete the peeling operation of the upper part of the mud cake, thereby reducing the possibility of residual mud cake on the filter cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the three-dimensional structure of the parts of the sliding frame and the supporting frame of the present invention;

[0031] Figure 3 It is a schematic diagram of the three-dimensional structure of the parts of the bracket and the push plate device of the present invention;

[0032] Figure 4 It is a schematic diagram of the three-dimensional structure of the parts of the pusher and the fixing plate of the present invention;

[0033] Figure 5 It is a schematic diagram of the three-dimensional structure of the parts of the push plate device and the support frame of the present invention;

[0034] Figure 6 It is a schematic diagram of the three-dimensional structure of the parts of the support frame and the limit block of the present invention;

[0035] Figure 7 It is a schematic diagram of the three-dimensional structure of the parts of the limit block and the sliding plate of the present invention;

[0036] Figure 8 This is a schematic diagram of the three-dimensional structure of the parts connecting the bent rod and the support rod of the present invention;

[0037] Figure 9 It is a schematic diagram of the three-dimensional structure of the sliding block and the pull rope parts of the present invention;

[0038] Figure 10 It is a schematic diagram of the three-dimensional structure of the rack and gear parts of the present invention;

[0039] Figure 11 It is a schematic diagram of the three-dimensional structure of the parts of the rotating bent rod and the connecting plate of the present invention;

[0040] Figure 12 It is a schematic diagram of the three-dimensional structure of the rotating bent rod and gear parts of the present invention;

[0041] Figure 13 It is a schematic diagram of the three-dimensional structure of the inner structure of the sliding support plate of the present invention;

[0042] Figure 14 It is a schematic diagram of the three-dimensional structure of the parts of the limit slider and the transmission slider of the present invention.

[0043] The meaning of the reference numerals in the figure: 1-filter press frame, 2-filter plate, 3-bracket, 4-push plate, 5-support frame, 6-limiting block, 21-sliding frame, 22-support frame, 23-electric push rod, 24-sliding frame, 25-sliding plate, 31-fixed plate, 32-connecting frame, 33-sliding block, 34-pull rope, 35-connecting block, 36-partition plate, 37-connecting rope, 41-connecting bent rod, 42-support rod, 51-rotating bent rod, 52-connecting plate, 53-swinging frame, 54-sliding support plate, 61-rack, 62-gear, 71-limiting slider, 72-transmission slider. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1 -Attached Figure 14 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by those skilled in the art based on the embodiments of the present invention without inventive effort shall fall within the scope of protection of the present invention.

[0045] Example 1: During the operation of an existing plate and frame filter press, mud cake often remains adsorbed on the filter cloth when the two filter plates are separated due to reasons such as excessive moisture content of the mud cake, improper selection of filter cloth material, or insufficient cleaning of the filter cloth. Existing mechanisms usually use a scraper to scrape off the mud cake adsorbed on the filter cloth. This operation will increase the roughness of the filter cloth surface, increase the possibility of mud cake adsorbing on the filter cloth, and reduce the service life of the filter cloth.

[0046] A plate and frame filter press for sludge treatment, please refer to the attached Figure 1 -Attached Figure 7 and attached Figure 10As shown, it includes: a filter press frame 1, a plurality of filter plates 2 are arranged on the filter press frame 1, filter cloths are arranged on the filter plates 2, two brackets 3 are fixed to the filter plates 2, the brackets 3 are slidably connected to the support frame 5, the support frame 5 is slidably connected to the filter press frame 1, a first spring is fixed between the bracket 3 and the support frame 5, a groove is provided on the bracket 3, the support frame 5 is slidably connected to the limit block 6, the upper part of the limit block 6 is serrated, and the limit block 6 limits the movement of the corresponding bracket 3 through the groove; two pushers 4 are both slidably connected to the filter press frame 1, and the pushers 4 control the movement of the filter plates 2 by pushing the brackets 3; a control mechanism is arranged on the filter press frame 1, for actively triggering the corresponding two brackets 3 to drive the filter plates 2 to move upward, and the control mechanism includes: a sliding frame 21, which is slidably connected to the filter press frame 1 On the filter press frame 1, a support frame 22 is slidably connected to the sliding frame 21, and an electric push rod 23 is provided on the support frame 22. The telescopic end of the electric push rod 23 is fixedly connected to the sliding frame 24. The telescopic end of the electric push rod 23 penetrates the support frame 22, and the sliding frame 24 is slidably connected to the support frame 22. A sliding plate 25 is slidably connected to the support frame 5. The sliding frame 24 is used to fix the filter plate 2 and push the sliding plate 25. The sliding plate 25 is used to squeeze the serrated part of the limit block 6 to release the limit of the bracket 3; two reset components are respectively provided on the corresponding push plate 4, which are used to actively control the multiple brackets 3 on one side of the corresponding push plate 4 to restore the initial position; two separation components are both provided on the sliding frame 24, which are used to actively peel off the upper part of the mud cake adsorbed on the filter cloth of the filter plate 2.

[0047] In the above scheme, the purpose is to solve the problem that the filter cloth is easily damaged when the mud cake adsorbed on the filter cloth is removed by a scraper; a control panel is provided on the filter press frame 1 (the filter press frame 1 is an existing mechanism, the filter press frame 1 can control the multiple filter plates 2 to press each other, first inject sludge between the multiple filter plates 2, and squeeze the sludge through the filter plates 2, and discharge the moisture in the sludge through the pipes on the lower sides of the multiple filter plates 2, and control the multiple filter plates 2 to separate the sludge into mud cake and moisture), the pusher 4, the sliding frame 21 and the electric push rod 23 are all electrically connected to the control panel, the first spring at the bracket 3 is in a compressed state at the initial stage, and the pusher 4 is in a compressed state. An intelligent monitoring device (an existing mechanism, not shown in the figure) is provided on the plate device 4, which is used to quickly determine whether mud cakes are adsorbed on the filter cloths on both sides of the filter plate 2. The relative movement distance of the sliding frame 21 and the support frame 22 is equal to the movement distance of the bracket 3 in the support frame 5. The sliding frame 24 moves downward on the support frame 22 to complete the positioning and fixation of the position of a filter plate 2. The serrated part of the limit block 6 is composed of multiple inclined surfaces. The inclined surface of the limit block 6 in contact with the sliding plate 25 is inclined from top to bottom to the left. Initially, the sliding frame 21 drives the support frame 22 and the sliding frame 24 to move without contacting any filter plate 2 and bracket 3.

[0048] In the process of using this device to treat sludge, after the sludge is separated into mud cake and water by multiple filter plates 2, the control panel controls the plate pusher 4 to move on the filter press frame 1, and the plate pusher 4 moves multiple filter plates 2 from right to left in sequence to the right, separating the two adjacent filter plates 2, and the mud cake between the two filter plates 2 falls naturally. When the intelligent monitoring device on the plate pusher 4 detects that the mud cake on the filter cloth of a certain filter plate 2 has not fallen, the plate pusher 4 controls the filter plate 2 to move, so that a gap is formed between the filter plate 2 and the filter plates 2 on its left and right sides, and the plate pusher 4 is closed. Then the control panel controls the sliding frame 21 to move. When the sliding frame 21 is in contact with the filter cloth, the mud cake between the two filter plates 2 falls naturally. After the filter plate 2 with the mud cake is aligned, the control panel stops moving the sliding frame 21, and then the control panel starts the electric push rod 23. The telescopic end of the electric push rod 23 extends and causes the sliding frame 24 to move downward. The sliding frame 24 fixes the filter plate 2. Before the sliding frame 24 moves downward to the limit, the sliding frame 24 separates the upper part of the mud cake adsorbed on the filter cloth from the filter cloth through the separation component, so that the mud cake becomes mostly attached to the filter cloth but its upper part is tilted away from the filter cloth. As the sliding frame 24 moves, when the telescopic end of the electric push rod 23 is fully extended, the control panel turns off the electric push rod 23 and the sliding frame 24 stops moving.

[0049] When the sliding frame 24 is about to move downward to the limit position, the sliding frame 24 contacts and pushes the two sliding plates 25 to move downward, and the sliding plates 25 squeeze the serrated parts of the corresponding limit blocks 6. The limit blocks 6 move to the right, and the limit blocks 6 release the limit on the bracket 3. The two brackets 3 move upward under the elastic force of the first spring connected thereto, and the two brackets 3 drive the filter plates 2 to move upward quickly. Due to the fixation of the filter plates 2 by the sliding frame 24, the filter plates 2 are driven by the supporting frame 22 to move upward synchronously through the sliding frame 24 and the electric push rod 23. The mud cake adsorbed on the filter cloth at the filter plate 2 falls off under the action of inertia. At the same time, if the mud cake adsorbs the filter cloth with great force, the inclined part of the upper part of the mud cake will drive the mud cake below it to fall off one by one under the action of inertia (similar to the operation of tearing tape). The mud cake adsorbed on the filter cloth can be quickly removed by inertia alone, reducing the damage to the filter cloth when the mud cake is removed. When the support frame 22 is lifted up and the filter cloth is put into operation, the filter plate 2 is put into operation again, and the filter cloth is put into operation for a period of time, and the filter cloth is put into operation for a period of time. When the support frame 22 is lifted up and the filter cloth is put into operation for a period of time, the filter plate 2 is put into operation for a period of time. When the support frame 22 is lifted up and the filter cloth is put into operation for a period of time, the filter plate 2 is put into operation for a period of time. When the support frame 22 is lifted up and the filter cloth is put into operation for a period of time, the filter plate 2 is put into operation for a period of time

[0050] Please refer to the attached Figure 2 , Attachment Figure 5 , Attachment Figure 6 and attached Figure 8 -Attached Figure 13As shown, the reset assembly includes: a fixed plate 31, fixedly connected to the corresponding push plate device 4, and the lower parts of the multiple support frames 5 on the same side of the push plate device 4 are slidably connected to a connecting frame 32, a sliding block 33 is slidably connected in the connecting frame 32, and the upper and lower sides of the sliding block 33 are provided with inclined surfaces, the fixed plate 31 is used to squeeze the inclined surface of the lower side of the sliding block 33, the connecting frame 32 is fixedly connected to a pull rope 34, the upper part of the support frame 5 is slidably connected to a connecting block 35, a first tension spring is fixedly connected between the connecting block 35 and the support frame 5, and the connecting block 33 is slidably connected to the support frame 5. 5 is fixedly connected to the pull rope 34, the connecting block 35 is used to push the bracket 3 to restore the initial position first, and then push the limit block 6 to re-limit the bracket 3. The reset assembly also includes: a partition plate 36, the number of which is the same as the number of the connecting frame 32, which is slidably connected to the corresponding connecting frame 32. A second tension spring is fixedly connected between the partition plate 36 and the connecting frame 32. The partition plate 36 is used to hinder the movement of the sliding block 33. The partition plate 36 is fixedly connected to the connecting rope 37, which is fixedly connected to the support frame 5. The sliding plate 25 is fixedly connected to the connecting bent rod 4 1. The lower part of the sliding block 33 is fixed with a support rod 42, and the connecting bent rod 41 is used to squeeze the support rod 42. The lower part of the connecting bent rod 41 is provided with an inclined surface, and the lowermost side of the moving range of the connecting bent rod 41 is located above the horizontal plane where the fixed plate 31 is located. The separation component includes: a rotating bent rod 51, which is rotatably connected to the sliding frame 24. The rotating bent rod 51 is rotatably connected to multiple connecting plates 52. The multiple connecting plates 52 are rotatably connected to a swing frame 53. The swing frame 53 is rotatably connected to the sliding frame 24, and the swing frame 53 slides on the swing frame 53. A plurality of sliding support plates 54 are connected, and a second spring is fixed between the sliding support plate 54 and the swing frame 53. The difference between the spacing between the rotation axes of the two swing frames 53 and twice the maximum distance from the sliding support plate 54 to the corresponding rotation axis of the swing frame 53 is less than the thickness of the filter plate 2, which is used to make the sliding support plate 54 slide against the filter cloth and be inserted between the filter cloth and the mud cake. The lowermost side of the sliding support plate 54 is an arc-shaped surface, and a rack 61 is provided on the support frame 22. The rotating bent rod 51 is fixed with a gear 62, and the gear 62 is engaged with the rack 61.

[0051] In the above scheme, the purpose is to control the rapid reset of the bracket 3 at the support frame 5 and control the separation of the upper part of the mud cake from the filter cloth; there is damping between the connecting frame 32 and the sliding block 33 (the sliding block 33 in the connecting frame 32 will not move independently under the action of its own gravity), the length of the connecting rope 37 is less than the distance moved by the connecting frame 32, and is used to enable the partition plate 36 to release the limit on the sliding block 33 when the connecting block 35 pushes the bracket 3 to reset, and the second tension spring connected to the partition plate 36 is initially in a stretched state, and the connecting bent rod 41 drives the sliding block 33 to move a distance equal to the height of the projection of the upper inclined surface of the sliding block 33 on the vertical plane through the support rod 42, and the distance between the two inclined surfaces on the sliding block 33 gradually decreases from left to right, through the rack 6 1 meshes with the gear 62 and moves. The gear 62 forms a crank-connecting rod mechanism by rotating the bent rod 51, the connecting plate 52 and the swing frame 53, controlling the sliding support plate 54 to separate the upper part of the mud cake from the filter cloth and change it into an inclined state. The second spring at the sliding support plate 54 is used to make the sliding support plate 54 move relative to the swing frame 53 when squeezing the filter cloth (the elastic coefficient of the second spring at the sliding support plate 54 is small, and the sliding support plate 54 will move relative to the swing frame 53 only when it is hindered by the filter cloth. The sliding support plate 54 will not press the filter cloth onto the filter plate 2 for hard squeezing and movement, thereby reducing the damage to the filter cloth caused by the sliding support plate 54 sliding against the filter cloth). The sliding support plate 54 slides against the filter cloth for a distance, so that the sliding support plate 54 is inserted between the mud cake and the filter cloth.

[0052] When the sliding frame 24 is about to move downward to the limit position, the sliding frame 24 pushes the sliding plate 25 to move, and the sliding plate 25 makes the sliding block 33 move downward by connecting the bent rod 41 and the support rod 42. The partition plate 36 moves to the left under the tension of the second tension spring connected thereto, and the partition plate 36 limits the sliding block 33. The sliding frame 24 fixes the position of the filter plate 2. Taking the rack 61 on the left as an example, when the rack 61 is engaged with the gear 62, as the sliding frame 24 moves downward, the gear 62 is fixed by rotating the bent rod 51 and the connecting plate 52. The movable swing frame 53 swings counterclockwise (from front to back), and the swing frame 53 drives the sliding support plate 54 to squeeze the filter cloth on the corresponding filter plate 2. The filter cloth hinders the movement of the sliding support plate 54, and the sliding support plate 54 moves toward the swing frame 53 and compresses the second spring therein. Then, as the sliding frame 24 moves downward and the rotating bent rod 51 rotates, the sliding support plate 54 is inserted between the filter cloth and the mud cake. At the same time, the sliding support plate 54 swings clockwise (from front to back), causing the upper part of the mud cake to become inclined. When the sliding frame 24 moves downward to the limit, the rotating bent rod 51 stops rotating.

[0053] When the support 3 moves upward, the mud cake on the filter cloth falls off, and then the control panel controls the push plate device 4 to move to the left. At the same time, the control panel controls the telescopic end of the electric push rod 23 to slowly retract, the sliding frame 24 loses contact with the sliding plate 25, and the push plate device 4 drives the fixed plate 31 to move synchronously. The fixed plate 31 contacts and squeezes the inclined surface on the lower side of the sliding block 33. Since the partition plate 36 limits the sliding block 33, the fixed plate 31 drives the connecting frame 32 to move to the left through the sliding block 33, and the connecting frame 32 pulls the connecting block 35 downward through the pull rope 34, and the connecting block 35 stretches the first tension spring connected to it. The connecting block 35 contacts and pushes the support 3 to move and reset, and the support 3 compresses the first spring connected to it. When the support 3 moves and resets, the connecting block 35 squeezes the serrated part of the limit block 6, limiting When the positioning block 6 is inserted into the groove of the bracket 3, the bracket 3 returns to its initial limit state. At this time, the connecting rope 37 is tightened, the partition plate 36 stops moving, and the fixed plate 31 drives the connecting frame 32 to continue to move to the left through the sliding block 33. The partition plate 36 loses its limit on the sliding block 33, and the second tension spring connected to the partition plate 36 is stretched. The sliding block 33 is squeezed by the fixed plate 31 and moves upward. The sliding block 33 and the fixed plate 31 lose contact. The height of the upper inclined surface of the sliding block 33 exceeds the partition plate 36. The sliding block 33 clamps the partition plate 36, and the partition plate 36 returns to its initial position. Subsequently, the connecting block 35 moves upward and resets under the tension of the first tension spring connected to it. The connecting block 35 restores the connecting frame 32 to its initial position through the pull rope 34. At this point, all parts in the device have returned to their initial positions.

[0054] Example 2: Based on Example 1, please refer to the attached Figure 3 , Attachment Figure 5 and attached Figure 14 As shown, it also includes: a straightening mechanism, the number of which is the same as the number of filter plates 2, which are respectively arranged in the corresponding filter plates 2, and are used to actively flatten the filter cloth on the filter plate 2, and the straightening mechanism includes: two limit sliders 71, both of which are slidingly connected in the filter plate 2, the sliding frame 24 is used to squeeze the limit slider 71, and four transmission sliders 72 are slidingly connected in the filter plate 2, the transmission slider 72 is used to flatten the surface of the filter cloth on the filter plate 2, and a third tension spring is fixed between two adjacent transmission sliders 72, and two inclined surfaces are provided on the lower side of the limit slider 71, and the inclined surfaces of the limit slider 71 are used to push the corresponding transmission slider 72.

[0055] In the above scheme, the purpose is to assist the sliding support plate 54 to quickly separate the connection between the upper part of the mud cake and the filter cloth; the middle parts of both sides of the filter plate 2 are in a concave state, and the mud cake adsorbed on the filter cloth is opposite to the concave part of the filter plate 2. When the sliding support plate 54 slides against the filter cloth, it is easy to insert into the concave part of the filter plate 2, causing part of the mud cake to remain on the filter cloth. By moving the left and right transmission sliders 72 away from each other, only the upper part of the filter cloth is stretched and flattened, and the auxiliary sliding support plate 54 is used to peel off the mud cake from the upper side of the filter cloth. The lower part of the limit slider 71 is provided with two inclined surfaces, and the spacing between the two inclined surfaces on the limit slider 71 gradually decreases from top to bottom. The limit slider 71 is provided with a groove. The groove of the limit slider 71 is used to avoid the third tension spring between the two transmission sliders 72.

[0056] When the filter cloth is finally removed, the filter press 71 is turned away from the support frame 24 and the filter is then turned away from the support frame 24. When the filter cloth is finally removed, the filter press 71 is turned away from the support frame 24 and the filter is then turned away from the support frame 24.

[0057] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the contents of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can better understand and utilize the present invention. As long as they do not deviate from the structure of the invention or exceed the scope of protection of the present invention, they should fall within the scope of protection of the present invention.

Claims

1. A plate and frame filter press for sludge treatment, comprising: A filter press frame (1), wherein a plurality of filter plates (2) are provided on the filter press frame (1), filter cloths are provided on the filter plates (2), two brackets (3) are fixedly connected to the filter plates (2), the brackets (3) are slidably connected to a support frame (5), the support frame (5) is slidably connected to the filter press frame (1), a first spring is fixedly connected between the bracket (3) and the support frame (5), a groove is provided on the bracket (3), the support frame (5) is slidably connected to a limiting block (6), the upper portion of the limiting block (6) is serrated, and the limiting block (6) limits the movement of the corresponding bracket (3) through the groove; Two pushers (4) are both slidably connected to the filter press frame (1), and the pushers (4) control the movement of the filter plate (2) by pushing the bracket (3); A control mechanism is provided on the filter press frame (1) and is used to actively trigger the corresponding two brackets (3) to drive the filter plate (2) to move upward; The control mechanism includes: A sliding frame (21) is slidably connected to the filter press frame (1), a support frame (22) is slidably connected to the sliding frame (21), an electric push rod (23) is provided on the support frame (22), a telescopic end of the electric push rod (23) is fixedly connected to a sliding frame (24), the telescopic end of the electric push rod (23) penetrates the support frame (22), the sliding frame (24) is slidably connected to the support frame (22), a sliding plate (25) is slidably connected to the support frame (5), the sliding frame (24) is used to fix the filter plate (2) and push the sliding plate (25), and the sliding plate (25) is used to squeeze the serrated portion of the limit block (6) to release the limit of the bracket (3); Two reset assemblies are respectively arranged on the corresponding push plate devices (4) and are used to actively control the plurality of brackets (3) on one side of the corresponding push plate devices (4) to restore the initial positions; Two separation components, both arranged on the sliding frame (24), are used to actively peel off the upper portion of the mud cake adsorbed on the filter cloth of the filter plate (2); The reset component includes: A fixed plate (31) is fixedly connected to the corresponding push plate device (4), and the lower parts of the plurality of support frames (5) on the same side as the push plate device (4) are slidably connected to a connecting frame (32), and a sliding block (33) is slidably connected in the connecting frame (32), and the upper and lower sides of the sliding block (33) are both provided with inclined surfaces, and the fixed plate (31) is used to squeeze the inclined surface on the lower side of the sliding block (33), and the connecting frame (32) is fixedly connected to a pull rope (34), and the upper part of the support frame (5) is slidably connected to a connecting block (35), and a first tension spring is fixedly connected between the connecting block (35) and the support frame (5), and the connecting block (35) is fixedly connected to the pull rope (34), and the connecting block (35) is used to first push the bracket (3) to restore the initial position, and then push the limit block (6) to re-limit the bracket (3).

2. A plate and frame filter press for sludge treatment according to claim 1, characterized in that: The reset component further includes: The number of partition plates (36) is the same as the number of the connecting frames (32), and they are slidably connected to the corresponding connecting frames (32). A second tension spring is fixed between the partition plates (36) and the connecting frames (32). The partition plates (36) are used to hinder the movement of the sliding block (33). The partition plates (36) are fixed with a connecting rope (37), and the connecting rope (37) is fixed to the support frame (5).

3. The plate and frame filter press for sludge treatment according to claim 2, characterized in that: A connecting bent rod (41) is fixedly connected to the sliding plate (25), a supporting rod (42) is fixedly connected to the lower portion of the sliding block (33), and the connecting bent rod (41) is used to squeeze the supporting rod (42).

4. A plate and frame filter press for sludge treatment according to claim 3, characterized in that: The lower portion of the connecting bent rod (41) is provided with an inclined surface, and the lowermost side of the movable range of the connecting bent rod (41) is located above the horizontal plane where the fixing plate (31) is located.

5. The plate and frame filter press for sludge treatment according to claim 4, characterized in that: The separation component comprises: A rotating bent rod (51) is rotatably connected to the sliding frame (24); the rotating bent rod (51) is rotatably connected to a plurality of connecting plates (52); the plurality of connecting plates (52) are rotatably connected to a swing frame (53); the swing frame (53) is rotatably connected to the sliding frame (24); a plurality of sliding support plates (54) are slidably connected to the swing frame (53); a second spring is fixed between the sliding support plate (54) and the swing frame (53).

6. The plate and frame filter press for sludge treatment according to claim 5, characterized in that: A rack (61) is provided on the support frame (22), a gear (62) is fixedly connected to the rotating bent rod (51), and the gear (62) is meshed with the rack (61).

7. A plate and frame filter press for sludge treatment according to claim 6, characterized in that include: The straightening mechanisms, the number of which is the same as the number of the filter plates (2), are respectively arranged in the corresponding filter plates (2) and are used to actively flatten the filter cloth on the filter plates (2). The straightening mechanisms include: Two limiting sliders (71) are both slidingly connected in a limiting manner in the filter plate (2); the sliding frame (24) is used to squeeze the limiting slider (71); four transmission sliders (72) are slidingly connected in the filter plate (2); the transmission sliders (72) are used to flatten the surface of the filter cloth on the filter plate (2); a third tension spring is fixed between two adjacent transmission sliders (72); two inclined surfaces are provided on the lower side of the limiting slider (71); the inclined surfaces of the limiting slider (71) are used to push the corresponding transmission sliders (72).

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