A plate-and-frame filter press

Abstract

The application relates to the field of filter pressing devices, and discloses a high-pressure movable plate-and-frame filter press, which comprises a rack and a filter pressing mechanism arranged on the rack, the filter pressing mechanism comprises a compression plate slidingly arranged on the rack, a driving piece for driving the compression plate to slide, and a movable plate-and-frame slidingly arranged on the rack, a filter plate is arranged in the movable plate-and-frame, one compression plate is arranged at each end of the rack in the length direction of the rack, the compression plate slides in the length direction of the rack, one driving piece is arranged at each end of the rack, a plurality of movable plate-and-frames are arranged between the compression plate and a fixed plate, the compression plate and the movable plate-and-frame and the adjacent two movable plate-and-frames are connected through flexible connecting pieces; the high-pressure movable plate-and-frame filter press further comprises a lifting and desliming mechanism, the lifting and desliming mechanism is arranged on the rack, and the lifting and desliming mechanism is used for lifting the movable plate-and-frame so that the movable plate-and-frame collides with the rack to be deslimed. The application has the effect of improving the desliming efficiency of the high-pressure movable plate-and-frame filter press.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of filter press, in particular to a plate-and-frame filter press. BACKGROUND

[0002] The movable plate-and-frame filter press is a kind of sludge filtration and dewatering machine. The sludge filtration and dewatering is to use the pressure difference between the two sides of the filter medium as the driving force to make the water in the sludge be forced to pass through the filter medium to form filtrate, and the solid particles are intercepted on the medium to form filter cake, so as to achieve the purpose of sludge dewatering.

[0003] The filter plate and the filter frame of the movable plate-and-frame filter press are arranged alternately, and the filter cloth is covered on both sides of the filter plate. The filter plate and the filter frame are pressed by the pressing device, that is, the filter chamber is formed between the filter plate and the filter frame. A small hole is opened in the same position of the upper end of the filter plate and the filter frame, and becomes a channel after being pressed. The sludge with a pressure of 0.2-0.4 MPa enters the filter chamber through the channel. The surface of the filter plate is engraved with a groove, and the lower end is drilled with a hole for discharging the filtrate. The filtrate is discharged from the filter machine along the groove and the hole under pressure, so as to dewater the sludge.

[0004] In the process of implementing the present application, the inventors found that at least the following problems exist in the technology: the current movable plate-and-frame filter press needs to move one filter plate after another to make the sludge cake between the two filter plates fall off, so the efficiency of sludge discharge is low. SUMMARY

[0005] In order to improve the sludge discharge efficiency of the high-pressure movable plate-and-frame filter press, the present application provides a plate-and-frame filter press.

[0006] The plate-and-frame filter press provided by the present application adopts the following technical scheme:

[0007] A plate-and-frame filter press, comprising a rack and a filter pressing mechanism arranged on the rack, wherein the filter pressing mechanism comprises a pressing plate slidingly arranged on the rack, a driving member driving the pressing plate to slide, and a movable plate-and-frame slidingly arranged on the rack, wherein the movable plate-and-frame is internally provided with a filter plate, one pressing plate is arranged at each end of the rack in the length direction of the rack, the pressing plate slides along the length direction of the rack, one driving member is arranged at each end of the rack, a plurality of movable plate-and-frames are arranged between the two pressing plates, and the pressing plate and the movable plate-and-frame, and adjacent two movable plate-and-frames are connected by flexible connecting members.

[0008] Further comprising a sludge lifting mechanism arranged on the rack, wherein the sludge lifting mechanism is used to lift the movable plate-and-frame to make the movable plate-and-frame impact the rack to lift the sludge.

[0009] By adopting the technical scheme, two driving members are used to drive two pressing plates to move close to each other, so as to press the movable plate frame, and after the pressing filtration is completed, the two pressing plates are reset, and the flexible connecting member is used to drive the movable plate frame to separate in sequence, so as to quickly separate a plurality of movable plate frames, and after the adjacent two movable plate frames are separated, the mud cake falls off, thereby improving the mud discharging efficiency of the high-pressure movable plate frame filter press.

[0010] After the movable plate frame is separated, the lifting and mud removing mechanism is used to lift the movable plate frame in the vertical direction, so that the mud cake adhered to the filter plate falls off and is separated more completely when the movable plate frame moves up and down and collides with the rack when falling down. In addition, the movable plate frame is lifted in the vertical direction, which can reduce the gap between the movable plate frame and the rack on both sides in the vertical direction, so that the movable plate frame is not easy to be misaligned when being pressed, and the sealing property between adjacent two movable plate frames is improved.

[0011] Optionally, the rack is provided with a fixed plate frame, and a plurality of movable plate frames are uniformly distributed on both sides of the fixed plate frame. The fixed plate frame is provided with a connecting block, and the connecting block is detachably connected to the rack.

[0012] By adopting the technical scheme, the fixed plate frame is used as the support point of the movable plate frame, so that the movable plate frame is pressed on the fixed plate frame, the possibility of misalignment of the two movable plate frames in the middle being directly pressed is reduced, and the stability of the movable plate frame in work is improved.

[0013] Optionally, the rack comprises a pressing frame arranged horizontally and a plurality of supporting legs arranged at the bottom of the pressing frame. The pressing plate and the movable plate frame pass through the pressing frame. The two sides of the pressing frame in the length direction are provided with guide rails, the guide rails gradually decrease from the direction close to the pressing frame to the direction away from the pressing frame, and the vertical side walls of the pressing plate and the movable plate frame are both provided with limiting rollers rotatingly arranged thereon. The limiting rollers and the guide rails are in rolling connection.

[0014] By adopting the technical scheme, the pressing frame is used to limit the pressing plate and the movable plate frame, so that the possibility of the movable plate frame moving in the width direction of the rack is reduced, the movable plate frame is more closely matched when being pressed, and the stability of the movable plate frame in work is ensured. When the pressing plate and the movable plate frame slide, the limiting rollers and the guide rails are matched to realize the guiding and limiting.

[0015] Optionally, the side wall close to the movable plate frame of the pressing frame is provided with a limiting plate, a plurality of abutting springs are arranged between the limiting plate and the pressing frame, and a plurality of telescopic rods are arranged between the limiting plate and the pressing frame.

[0016] By adopting the technical scheme, the two limiting plates elastically clamp the movable frame, so that the limiting plate and the movable frame are seamlessly attached, which not only has the effect of guiding and limiting the movable frame when the movable frame slides, but also has the effect of elastic limiting when the movable frame is lifted and reset, so that the several movable frames after resetting are aligned, and the sealing performance of the adjacent two movable frames when being lifted and compressed is improved. In addition, when the movable frame falls and hits the compression frame, the vibration of the movable frame is absorbed by the elastic spring, and the excessive vibration of the movable frame is reduced.

[0017] Optionally, the vertical side wall of the movable frame is provided with an extension piece, the flexible connecting piece is connected with the extension piece, and a flexible blocking piece is arranged between the two adjacent extension pieces.

[0018] By adopting the technical scheme, the flexible blocking piece is arranged between the two extension pieces, and the flexible blocking piece is used to block the flexible connecting piece when the movable frame is pushed, so as to reduce the possibility of the flexible connecting piece bending into the two extension pieces.

[0019] Optionally, the lifting and desilting mechanism comprises a jacking rod rotating on the rack and a driving motor driving the jacking rod to rotate, one jacking rod is arranged on each side of the rack in the length direction of the rack, the jacking rod is located below the extension piece, a plurality of protrusions are arranged on the jacking rod, the number of the protrusions is consistent with the number of the extension pieces, and the protrusions are in contact with the bottom of the extension piece when the jacking rod rotates.

[0020] By adopting the technical scheme, the driving motor is used to drive the two jacking rods to rotate, and the protrusions are used to lift the extension piece during the rotation of the two jacking rods, so as to drive the whole movable frame to lift, and the mud cake on the movable frame is completely dropped when the movable frame moves up and down and hits the compression frame, so as to speed up the desilting efficiency.

[0021] Optionally, the plurality of protrusions are divided into two groups, the two groups of protrusions are distributed around the axis of the jacking rod, each group of protrusions is uniformly distributed along the length direction of the jacking rod, and the two groups of protrusions are staggered.

[0022] By adopting the technical scheme, the two groups of protrusions are staggered, so that all the movable frames are lifted twice during the rotation of the jacking rod, thereby reducing the possibility of interference between the adjacent two movable frames when they are lifted at the same time, and also reducing the impact on the rack.

[0023] Optionally, a plurality of mounting grooves are arranged on the jacking rod, and the protrusions are detachably connected in the mounting grooves by bolts.

[0024] By adopting the technical scheme, the protrusion is detachably connected with the jacking rod, the protrusion is convenient to replace, the protrusion can be replaced when the wear of the protrusion is too large, and different specifications of the protrusion can be selected according to the stroke of jacking.

[0025] Optionally, the end portions of the two jacking rods close to the driving motor are coaxially provided with driven sprockets, and the motor shaft of the driving motor is coaxially provided with two driving sprockets, and a single driving sprocket and a single driven sprocket are driven by a chain.

[0026] By adopting the technical scheme, the driving motor is used to drive the two jacking rods to rotate synchronously, so that the two jacking rods synchronously jack up the movable plate frame, and the possibility of inclination and jamming of the movable plate frame is reduced.

[0027] Optionally, the surface of the protrusion is arc-shaped.

[0028] By adopting the technical scheme, the surface of the protrusion is arc-shaped, so that the protrusion continuously contacts the extension piece during jacking up of the movable plate frame, and the wear of the protrusion is more uniform.

[0029] In summary, the present application has at least one of the following beneficial technical effects:

[0030] 1. Two driving members are used to drive two pressing plates to move close to each other, so as to press the movable plate frame, and after the pressing filtration is completed, the two pressing plates are reset, and the flexible connecting member is used to drive the movable plate frame to separate in sequence, so as to quickly separate a plurality of movable plate frames, and after two adjacent movable plate frames are separated, the mud cake falls off, the mud discharge efficiency of the high-pressure movable plate frame filter press is improved; after the movable plate frame is separated, the lifting and mud removal mechanism is used to lift the movable plate frame in the vertical direction, so that the mud cake adhered to the filter plate falls off and is separated more completely when the movable plate frame moves up and down and collides with the rack. In addition, the movable plate frame is lifted in the vertical direction, so as to reduce the gap between the movable plate frame and the rack on both sides in the vertical direction, so that the movable plate frame is not easy to be misaligned when being pressed, and the sealing property between two adjacent movable plate frames is improved.

[0031] 2. Two limiting plates are used to elastically clamp the movable plate frame, so as to seamlessly fit between the limiting plate and the movable plate frame, not only to guide and limit the movable plate frame when the movable plate frame slides, but also to elastically limit the movable plate frame when the movable plate frame is lifted and reset, so that a plurality of movable plate frames after reset are aligned, and the sealing property of two adjacent movable plate frames when being pressed is improved. In addition, the limiting plate is struck by the movable plate frame when falling, the vibration of the movable plate frame is absorbed by the spring, and the excessive vibration of the movable plate frame is reduced.

[0032] 3. The two jacking rods are driven to rotate by the driving motor, and the extension piece is lifted by the protruding block during the rotation of the two jacking rods, so as to drive the whole movable plate frame to be lifted, when the movable plate frame is lifted and hits the compression frame, the mud cake on the movable plate frame is completely dropped, and the mud discharge efficiency is accelerated. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a schematic diagram of the overall structure of the embodiment of the application.

[0034] Figure 2 is a schematic diagram of the limiting plate structure in the embodiment of the application.

[0035] Figure 3 is a schematic diagram of the jacking rod structure in the embodiment of the application.

[0036] BRIEF DESCRIPTION OF DRAWINGS:

[0037] 1, rack; 11, compression frame; 111, guide slide rail; 12, support leg; 13, fixed plate frame; 131, connecting block; 14, limiting plate; 141, abutting spring; 142, telescopic rod; 2, filter pressing mechanism; 21, compression plate; 211, limiting roller; 22, driving part; 23, movable plate frame; 231, filter plate; 24, extension piece; 241, flexible baffle; 242, flexible connecting part; 3, lifting and mud removing mechanism; 31, jacking rod; 311, protruding block; 312, mounting groove; 313, driven sprocket; 32, driving motor; 321, driving sprocket. DETAILED DESCRIPTION

[0038] The following will be described in detail in combination with the accompanying drawings. Figures 1-3 The application will be further described in detail.

[0039] The embodiment of the application discloses a plate frame filter press, which refers to Figure 1 A plate frame filter press comprises a rack 1, a filter pressing mechanism 2 and a lifting and mud removing mechanism 3, and the filter pressing mechanism 2 and the lifting and mud removing mechanism 3 are both arranged on the rack 1.

[0040] Referring to Figure 1 The rack 1 comprises a compression frame 11 and a support leg 12, the compression frame 11 is horizontally arranged, the support leg 12 is fixedly arranged at the bottom of the compression frame 11, and the support leg 12 is provided with a plurality of support legs. The guide slide rails 111 are fixedly arranged on both sides of the compression frame 11 in the length direction, and the guide slide rails 111 gradually decrease from the direction close to the compression frame 11 to the direction far away from the compression frame 11, and the guide slide rails 111 are arranged in a trapezoidal shape. The fixed plate frame 13 is arranged at the middle position of the compression frame 11 in the length direction, and the fixed plate frame 13 is vertically arranged and penetrates through the compression frame 11. The connecting blocks 131 are fixedly connected to both vertical side walls of the fixed plate frame 13, and the connecting blocks 131 are detachably connected to the compression frame 11 by bolts.

[0041] With reference to Figure 2 The two sides of the length direction of the compression frame 11 are provided with limiting plates 14, the limiting plates 14 are vertically arranged, a plurality of abutting springs 141 are fixedly arranged between the limiting plates 14 and the compression frame 11, the abutting springs 141 are horizontally arranged, a plurality of telescopic rods 142 are fixedly arranged between the limiting plates 14 and the compression frame 11, and the telescopic rods 142 are arranged in parallel with the abutting springs 141.

[0042] With reference to Figure 1 The compression filter mechanism 2 comprises compression plates 21, driving members 22 and movable plate frames 23, one of the driving members 22 is fixedly arranged at each end of the length direction of the compression frame 11, the driving member 22 of the embodiment is an oil cylinder, the piston rod of the oil cylinder moves along the length direction of the compression frame 11, one of the compression plates 21 is fixedly connected to the piston rod of each driving member 22, each compression plate 21 is vertically arranged, and the compression plate 21 penetrates the compression frame 11. The side, which is close to each other, of the two limiting plates 14 abuts against the compression plate 21.

[0043] With reference to Figure 2 And Figure 3 The movable plate frames 23 are arranged in parallel with the fixed plate frame 13, a plurality of movable plate frames 23 are arranged between each compression plate 21 and the fixed plate frame 13, and a filter plate 231 is fixedly arranged in the interior of each movable plate frame 23. The side, which is close to each other, of the two limiting plates 14 abuts against the movable plate frame 23. An extension piece 24 is fixedly arranged on the vertical side wall of each movable plate frame 23, the extension piece 24 extends out of the compression frame 11, and a gap is left between the two adjacent extension pieces 24. A limiting roller 211 is rotatably arranged on the vertical side wall of each compression plate 21 and the bottom of each extension piece 24, and the limiting roller 211 is in rolling cooperation with the guide slide rail 111.

[0044] With reference to Figure 3 The compression plate 21 and the extension piece 24 and the two adjacent extension pieces 24 are connected through flexible connecting members 242, and the flexible connecting member 242 of the embodiment is a chain. Flexible baffles 241 are fixedly connected between the two adjacent extension pieces 24, and the flexible baffles 241 protrude between the two extension pieces 24.

[0045] With reference to Figure 1 And Figure 3 The two driving members 22 are used to push the movable plate frame 23 to be compressed on the fixed plate frame 13, so that the compression of the movable plate frame 23 is realized, the two compression plates 21 are reset after the compression filtering is completed, the flexible connecting member 242 is used to sequentially drive the two adjacent movable plate frames 23 to be separated, and the mud cake falls off when the two adjacent movable plate frames 23 are separated.

[0046] With reference to Figure 1 And Figure 3The lifting and desliming mechanism 3 comprises lifting rods 31 and a driving motor 32, one of the lifting rods 31 is rotationally arranged at each of the two sides of the frame 1 in the length direction of the frame 1, the lifting rod 31 is located below the extension piece 24 and has a gap with the extension piece 24, the driving motor 32 is fixedly arranged at one end of the frame 1, and a driven sprocket 313 is coaxially fixedly arranged at the end of each of the two lifting rods 31 close to the driving motor 32. Two driving sprockets 321 are coaxially arranged on the motor shaft of the driving motor 32, and a chain is arranged between each driving sprocket 321 and each driven sprocket 313.

[0047] With reference to Figure 1 and Figure 3 Two groups of protrusions 311 are uniformly arranged on each of the lifting rods 31 around the axis of the lifting rod 31, each group of protrusions 311 is uniformly distributed along the length direction of the lifting rod 31, and the two groups of protrusions 311 are staggered, the number of the protrusions 311 on each of the lifting rods 31 is consistent with the number of the movable plate frames 23, and the surface of each of the protrusions 311 is arc-shaped.

[0048] With reference to Figure 1 and Figure 3 The driving motor 32 is used to drive the two lifting rods 31 to rotate at the same time, so that the protrusions 311 lift the extension piece 24 and drive the movable plate frames 23 to be lifted as a whole, the two limiting plates 14 elastically clamp the movable plate frames 23, so that the movable plate frames 23 can only move in the vertical direction, when the movable plate frames 23 move and hit the compression frame 11, the mud cake on the movable plate frames 23 is completely dropped, at this time, the abutting spring 141 absorbs the vibration of the movable plate frames 23, reduces the excessive vibration of the movable plate frames 23, and makes the movable plate frames 23 quickly reset to the center.

[0049] The implementation principle of the plate frame filter press in the embodiment of the application is that the driving members 22 are arranged at the two ends of the frame 1, the driving members 22 push the movable plate frames 23 to be tightly pressed on the fixed plate frames 13, and the limiting plates 14 limit the movable plate frames 23 during the movement of the movable plate frames 23. After the compression and filtration are completed, the driving members 22 drive the two compression plates 21 to reset, the flexible connecting members 242 sequentially drive the adjacent two movable plate frames 23 to separate during the movement of the compression plates 21, and the mud cake falls off when the adjacent two movable plate frames 23 separate.

[0050] After the movable plate frame 23 is dispersed, the two jacking rods 31 are simultaneously rotated by the driving motor 32, so as to drive the movable plate frame 23 to be lifted along the vertical direction as a whole. The elastic clamping of the two limiting plates 14 on the movable plate frame 23 is realized when the movable plate frame 23 is lifted. When the movable plate frame 23 moves up and down and the movable plate frame 23 falls and hits the pressing frame 11, the mud cake on the movable plate frame 23 is completely dropped. At this time, the abutting spring 141 absorbs the vibration of the movable plate frame 23 and makes the movable plate frame 23 quickly reset to the center.

[0051] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A plate and frame filter press, comprising a frame (1) and a filter pressing mechanism (2) disposed on the frame (1), characterized in that: The filter press mechanism (2) includes a pressing plate (21) slidably disposed on the frame (1), a driving member (22) for driving the pressing plate (21) to slide, and a movable plate frame (23) slidably disposed on the frame (1). The movable plate frame (23) is provided with a filter plate (231). There is one pressing plate (21) at each end of the frame (1) along the length direction. The pressing plate (21) slides along the length direction of the frame (1). There is one driving member (22) at each end of the frame (1). There are several movable plate frames (23) between two pressing plates (21). The pressing plate (21) and the movable plate frame (23) and two adjacent movable plate frames (23) are connected by flexible connectors (242). It also includes a lifting and desliming mechanism (3), which is mounted on the frame (1). The lifting and desliming mechanism (3) is used to lift the movable plate frame (23) so that the movable plate frame (23) impacts the frame (1) to deslim. The frame (1) includes a horizontally arranged clamping frame (11) and several support legs (12) arranged at the bottom of the clamping frame (11). The clamping plate (21) and the movable plate frame (23) are both inserted through the clamping frame (11). Guide slide rails (111) are provided on both sides of the clamping frame (11) along its length. The guide slide rails (111) gradually decrease in size along the direction from near the clamping frame (11) to away from the clamping frame (11). Limiting rollers (211) are rotatably arranged on the vertical sidewalls of the clamping plate (21) and the movable plate frame (23). The limiting rollers (211) and the guide slide rails (111) are in rolling cooperation. The movable plate frame (23) is provided with extension pieces (24) on its vertical sidewalls. The flexible connector (242) is connected to the extension pieces (24). A flexible baffle (241) is provided between two adjacent extension pieces (24). The flexible baffle (241) protrudes between the two extension pieces (24). The lifting and desliming mechanism (3) includes a lifting rod (31) that rotates on the frame (1) and a drive motor (32) that drives the lifting rod (31) to rotate. The lifting rod (31) is rotatably arranged on both sides of the frame (1) along its length. The lifting rod (31) is located below the extension piece (24). The lifting rod (31) is provided with a plurality of protrusions (311). The number of protrusions (311) is the same as the number of extension pieces (24). When the lifting rod (31) rotates, the protrusions (311) abut against the bottom of the extension piece (24). The protrusions (311) are divided into two groups, and the two groups of protrusions (311) are distributed around the axis of the lifting rod (31). The protrusions (311) in each group are evenly distributed along the length of the lifting rod (31), and the two groups of protrusions (311) are staggered.

2. A plate and frame filter press according to claim 1, characterized in that: A fixed plate frame (13) is provided on the frame (1), and a number of movable plate frames (23) are evenly distributed on both sides of the fixed plate frame (13). A connecting block (131) is provided on the fixed plate frame (13), and the connecting block (131) is detachably connected to the frame (1).

3. A plate and frame filter press according to claim 1, characterized in that: A limiting plate (14) is provided on the side wall of the clamping frame (11) near the movable plate frame (23). A plurality of abutting springs (141) are provided between the limiting plate (14) and the clamping frame (11). A plurality of telescopic rods (142) are provided between the limiting plate (14) and the clamping frame (11).

4. A plate and frame filter press according to claim 1, characterized in that: The lifting rod (31) is provided with a plurality of mounting slots (312), and the protrusion (311) is detachably connected to the mounting slot (312) by bolts.

5. A plate and frame filter press according to claim 1, characterized in that: Both lifting rods (31) have driven sprockets (313) coaxially arranged at the ends near the drive motor (32). The drive motor (32) has two driving sprockets (321) coaxially arranged on the motor shaft. The single driving sprocket (321) and the single driven sprocket (313) are driven by a chain.

6. A plate and frame filter press according to claim 1, characterized in that: The surface of the protrusion (311) is arc-shaped.

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