Filter press with filter cloth convenient to disassemble

Abstract

The invention discloses a filter press with filter cloth convenient to disassemble, a positioning plate is fixed at the left end of the upper part of a rack, a pressing plate is arranged at the right end of the upper part of the rack in a left-right sliding manner, a plurality of filter plates are arranged between the positioning plate and the pressing plate, and an abutting plate is pressed between every two adjacent filter plates; a hanging mechanism is connected between the upper portions of every two adjacent filter plates, filter cloth is hung on hanging rods, the two ends of the filter cloth are connected with the lower ends of the two adjacent filter plates, and the left end and the right end of the filter cloth can be connected with fixing rods through the multiple sets of hanging mechanisms arranged above the rack and matched with the fixing rods arranged below the filter plates. The middle part of the filter plate is connected to a hanging rod in the hanging mechanism, so that only one group of filter cloth needs to be mounted between two adjacent filter plates, the number of the filter cloth in the whole filter press is reduced, the mounting and dismounting modes of the filter cloth are simplified, the mounting and dismounting efficiency of the filter cloth is improved, and the sealing effect is ensured while the filter cloth is convenient to mount.

Description

Technical Field

[0001] The invention relates to the technical field of filter presses, and in particular to a filter press with convenient filter cloth disassembly. Background Art

[0002] A filter press is a solid-liquid separation device that uses a special filter medium to apply a certain pressure to an object, causing the liquid to seep out. The main components of the filter press are multiple filter plates pressed together. Filter cloths are provided on the left and right surfaces of the filter plates for solid-liquid separation, so that the liquid passes through the filter cloth into the filter plate and is discharged, while the solid remains on the surface of the filter cloth.

[0003] When installing filter cloth on the filter plate in the filter press, two filter cloths are usually respectively sleeved on the left and right side surfaces of the filter plate, and the overlapping part of the two filter cloths is tied together with a cable tie, or the filter cloth is directly fixed to the surface around the filter plate with multiple screws, and the hole in the middle of the filter cloth needs to be sleeved in the hole in the middle of the filter plate, and the hole of the filter cloth is tightly fitted with the hole of the filter plate through pipes or other objects to ensure that the medium will not leak through the gap between the two when entering.

[0004] At present, a set of filter cloths needs to be set on both sides of the filter plate in the filter press, and the two sets of filter cloths need to be installed or removed separately, which means that when removing each filter plate, the filter cloth on one side of the filter plate needs to be removed first, and then the filter cloth on the other side needs to be removed again, which makes the overall number of filter cloths large, and the number and operation are complicated during installation or removal. To this end, we designed a filter press that is easy to remove the filter cloth. Summary of the invention

[0005] The present invention proposes a filter press with easy-to-remove filter cloth, which solves the problem that a group of filter cloths needs to be arranged on both sides of the filter plate, and the two groups of filter cloths need to be installed or removed separately, and the overall number of filter cloths is large, which makes the installation or removal complicated.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A filter press for convenient removal of filter cloths, comprising a frame, a positioning plate fixed to the left end of the upper part of the frame, a pressing plate slidingly arranged on the right end of the upper part of the frame, the right end of the pressing plate connected to an external hydraulic cylinder for the left and right movement of the pressing plate, so that the pressing plate can press a plurality of filter plates tightly together to form a sealing structure, and a plurality of filter plates are arranged between the positioning plate and the pressing plate, an abutment plate is pressed between every two adjacent filter plates, and L-shaped plates are symmetrically arranged on the filter plates and the pressing plates, which are slidably placed on the frame through the L-shaped plates;

[0008] A hanging mechanism is connected between the upper parts of every two adjacent filter plates, and the hanging mechanism includes two groups of expansion structures symmetrically arranged at the front and rear of the filter plates, and the lower ends of the two sides of the expansion structures are respectively rotatably connected to the upper parts of the adjacent filter plates, and a hanging rod is arranged between the front and rear groups of expansion structures, and the front and rear ends of the hanging rod are respectively connected to a group of tensioning structures, and the tensioning structure is connected to a cleaning mechanism;

[0009] A filter cloth is hung on the hanging rod, the filter cloth is folded in half, two ends of the filter cloth are fixedly connected to the lower ends of two adjacent filter plates, and the abutment plate is placed inside the filter cloth and the two abut against each other.

[0010] Furthermore, the left and right side surfaces of the filter plate are both recessed inward to form a filter press groove, and connecting holes are formed through the left and right sides of the filter plate, and the connecting holes are not connected to the filter chamber inside the filter plate. The filter plate itself has a filter cavity for separating solids and liquids, and the connecting hole is not connected to the filter cavity. Solid portions are respectively provided on the outer surfaces of the filter press grooves on the left and right sides, and the solid portions are aligned with the connecting holes. Drain holes are formed through the sides of the filter plate, and the drain holes are connected to the filter chamber inside the filter plate. After the sewage is filtered on the surface of the filter plate, the water flow will enter the filter chamber through the filter holes on the surface of the filter plate, and then discharge the clean water outward through the drainage holes on the sides.

[0011] Furthermore, the cross-sectional size and shape of the abutment plate are consistent with those of the filter plate, and a rectangular hole is formed through the middle of the abutment plate. Two groups of penetration plates are symmetrically arranged in the rectangular hole, and a gap is formed between the two groups of penetration plates to form a liquid inlet cavity. The middle of the penetration plate is designed as a circular ring structure, and a liquid inlet hole consistent with the connecting hole is formed in the inner ring of the circular ring, and the outer diameter of the circular ring is consistent with the outer diameter of the solid part;

[0012] When the abutment plate is pressed between two adjacent filter plates, the ring can be pressed against the solid part to form a sealing structure. The sewage cannot enter the space between the filter pressing groove and the side of the filter cloth, but can only enter the space in the middle of the same group of filter cloths, that is, the liquid inlet cavity, so that the sewage can be pressed and filtered through the filter cloth, so that the filter cake stays on the two inner surfaces of the filter cloth.

[0013] The two groups of penetration plates both have outwardly protruding parts to form a compaction part, the thickness of the compaction part is consistent with the depth of the filter press groove, the compaction part can penetrate into the filter press groove, thereby crimping the ring and the solid part, and can make the left and right sides of the filter cloth spread outward, increasing the space and facilitating the entry of sewage into the filter press.

[0014] Furthermore, symmetrically distributed sleeve notches are formed on the left and right sides of the filter cloth, the inner diameter of the sleeve notch is smaller than the outer diameter of the ring and the solid part, and the inner diameter of the sleeve notch is larger than the outer diameter of the liquid inlet hole and the connecting hole. When the filter plate is pressed and contacted with the abutment plate, the sleeve notch can be pressed between the solid part and the ring of the abutment plate, and the connecting hole can be connected with the liquid inlet hole. The sleeve notch is set to a reasonable size, so that when installing the filter cloth, it is not necessary to be too precise with the filter cloth, so that it has a certain error tolerance, thereby facilitating the installation of the filter cloth.

[0015] The width of the filter cloth is greater than the width of the filter pressing groove of the filter plate. The front, back, top and bottom of the filter cloth can contact the filter plate and the abutment plate, and then they can be pressed together to form a sealing structure.

[0016] Furthermore, the expansion structure includes an expansion block symmetrically arranged in the middle above two adjacent filter plates, two groups of connecting bias rods are symmetrically arranged on the outside of the expansion block, the connecting bias rods are rotatably connected to the outside of the expansion block through axle pins, and the ends of the two connecting bias rods away from the expansion block are respectively rotatably connected to the upper surfaces of the two adjacent filter plates through axle pins, and a hanging rod is slidably arranged between the front and rear groups of the expansion blocks.

[0017] Two groups of fixing rods are symmetrically arranged below the filter plate, the filter cloth is hung on the hanging rods, and the two ends of the filter cloth are respectively fixed to the fixing rods close to the bottom of the adjacent filter plate. When installing the filter cloth, the middle position of the filter cloth is overlapped on the hanging rods, and then the two ends of the filter cloth are respectively fixed to the fixing rods on the left and right sides by fasteners such as clips or screws, and the filter cloth is unfolded before fixing;

[0018] Then stretch the part of the filter cloth above the hanging rod forward and backward, and then fix it on the hanging rod through fasteners such as clips or screws. At this time, the installation of the filter cloth can be completed. When disassembling, just remove the connection between the fixing rod and the hanging rod.

[0019] Furthermore, the tensioning structure comprises a movable slide seat symmetrically arranged on the front and rear sides, an extension plate is integrally formed on the inner side of the movable slide seat, a circular hole is formed through the upper and lower parts of the extension plate, a tensioning rod is slidably sleeved in the circular hole, the bottom ends of the two tensioning rods are connected to the outer end of the hanging rod, a connecting pressure ring is fixed on the top of the tensioning rod by screws, a tensioning spring is arranged between the lower end of the connecting pressure ring and the top of the extension plate, and the tensioning spring is sleeved on the tensioning rod;

[0020] After the filter cloth is connected to the hanging rod and the fixing rod, the hanging rod has a tendency to move upward under the action of the tensioning rod and the tensioning spring, so that the filter cloth can be properly tensioned, so that wrinkles will not appear on its surface, and when the two adjacent filter plates and the middle abutment plate are pressed against each other, the filter cloth can be deformed inward to a certain extent and placed in the filter press groove;

[0021] The unfolding block is penetrated front and back to form a lifting hole, and a lifting slider is set in the lifting hole for sliding up and down. The hanging rod is connected with the lifting slider, and the lifting slider is fixedly sleeved on the hanging rod. The hanging rod can move up and down in the lifting hole, so as to change the position height of the hanging rod and adjust the tension of the filter cloth. The position height of the connecting pressure ring can be adjusted as needed. The higher the height of the connecting pressure ring above the tensioning rod, the smaller the tendency of the tensioning spring to reset upward, so that the upward force of the hanging rod is smaller and the tension of the filter cloth is lower, and vice versa.

[0022] Furthermore, the cleaning mechanism comprises a driving rack fixed above the movable slide seat, an extension plate on the side surface of the movable slide seat penetrates up and down to form a through hole, a lifting rod is slidably sleeved up and down in the through hole, the bottom end of the lifting rod is connected to the top of the unfolding block, and a mounting shaft seat is fixedly installed on the lifting rod, an output shaft is rotatably installed on the mounting shaft seat through a bearing, a driving gear is installed at one end of the output shaft, and the driving gear is meshed and connected with the driving rack, and an impact disk is installed at the other end of the output shaft, and a plurality of impact protrusions distributed in a circumferential array are provided on the outer ring surface of the impact disk, and the protruding length of the impact protrusion can be replaced accordingly according to actual needs, so that the displacement of the impact seat and the tensioning rod moving downward is greater than the displacement thereof moving downward with the unfolding block;

[0023] An impact seat is fixed on the top of the tensioning rod, and a contact block is rotatably arranged above the impact seat. When two adjacent filter plates move away from each other, the expansion block will drop down with it under the action of the connecting bias rod. At this time, the lifting rod will also drive the driving gear and the impact plate to drop together. Since the driving gear is meshed with the driving rack, the driving gear will rotate with it, thereby causing the impact plate to rotate.

[0024] When the impact disc is rotating, the impact protrusion on the impact disc will contact the impact seat and move it downward. At this time, the filter cloth will be in a relaxed state. When the impact protrusion is out of contact with the impact seat, the filter cloth will be in a tensioned state again, causing the filter cloth to repeatedly perform the action of tensioning-relaxing-tensioning alternately, thereby shaking off the mud cake attached to the surface of the filter cloth and cleaning it.

[0025] Furthermore, the cross section of the contact block is a right-angled triangle structure, and the bottom end of one side of the inclined surface is rotatably connected to the upper surface of the impact seat through an axle pin, and the axle pin is also provided with a torsion spring for resetting the contact block. A notch is provided on the contact block, and the axle pin is installed in the notch, and the torsion spring is sleeved on the axle pin, and the torsion spring can make the bottom of the contact block return to its original position again after deflection and contact the upper surface of the impact seat;

[0026] The impact protrusion is a 1 / 4 circular structure, one side of which is an arc-shaped structure and the other side is a straight structure, wherein the arc-shaped structure is used to contact the inclined surface of the contact block and make the impact seat move downward, and one side of the straight structure makes it possible for the impact seat to instantly move upward and reset when the arc-shaped side of the impact protrusion is not in contact with the inclined side of the contact block, and one side of the straight structure is used to contact the right-angle surface of the contact block and make it deflect with the axle pin as the axis, so that the impact disk rotates normally and the impact seat does not move downward.

[0027] Furthermore, two groups of movable guide rods are symmetrically arranged front and back above the frame, and the movable slide seat penetrates left and right to form a movable slide hole. The movable slide seat is slidably connected to the movable guide rod through the movable slide hole. When one of the filter plates moves to the left, the expansion structure will be unfolded as a whole. At this time, the entire hanging mechanism and cleaning mechanism will also move accordingly, so that the corresponding filter cloth can be unfolded and disassembled, and the mud cake after filtration can fall off from the surface of the filter cloth during the unfolding process.

[0028] Beneficial effects of the present invention:

[0029] 1. By arranging multiple groups of hanging mechanisms above the frame and cooperating with the fixing rods arranged under the filter plates, the left and right ends of the filter cloth can be connected to the fixing rods, and the middle part thereof is connected to the hanging rods in the hanging mechanism, so that only one group of filter cloth needs to be installed between two adjacent filter plates, thereby reducing the number of filter cloths in the entire filter press, simplifying the installation and removal methods of the filter cloths, and thus improving the installation and removal efficiency of the filter cloths. Solid parts are arranged on the left and right sides of the filter plates, and abutment plates are pressed between two adjacent filter plates, which facilitates the installation of the filter cloths while also ensuring the sealing effect and the normal operation of the filter plates;

[0030] 2. By arranging a tensioning structure on the hanging rod, the tensioning structure can move up and down with the hanging rod, so as to facilitate the unfolding and disassembly of the filter cloth. During the installation process, the tensioning degree of the tensioning structure can be adjusted as needed, so that the tension of the filter cloth is guaranteed during installation, and wrinkles will not occur, which is convenient for the subsequent filter pressing operation;

[0031] 3. By arranging a cleaning mechanism on the hanging mechanism, and the cleaning mechanism is connected with the tensioning structure and the expansion structure, during the unfolding of the filter cloth, the cleaning mechanism can move downward together with the tensioning mechanism and the expansion structure, and the tensioning structure can make the hanging rod continuously swing up and down during the downward movement, so that the filter cloth can repeatedly perform the action of tensioning-relaxing-tensioning alternately, so as to shake off the mud cake attached to the surface of the filter cloth and clean the mud cake on the surface of the filter cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A front view of a filter press for conveniently removing filter cloth proposed by the present invention;

[0033] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;

[0034] Figure 3 for Figure 1 Front view of the diagram;

[0035] Figure 4 for Figure 1 The front and rear isometric drawings of the

[0036] Figure 5 for Figure 2 A schematic diagram of the structure of the middle abutment plate;

[0037] Figure 6 for Figure 1 Schematic diagram of the connection between the middle filter plate and the filter cloth, the hanging mechanism, and the cleaning mechanism;

[0038] Figure 7 for Figure 6 A schematic diagram of a structure in which a filter plate is not provided;

[0039] Figure 8 for Figure 6 A schematic diagram of the structure of the hanging mechanism and the cleaning mechanism after the middle filter plates are separated from each other;

[0040] Fig. 9 for Figure 8 Middle partial enlarged picture;

[0041] Fig.10 for Figure 2 A schematic diagram of the structure of the connecting mechanism and the cleaning mechanism after the middle filter plates are squeezed and contacted with each other;

[0042] Fig.11 for Figure 8 Enlarged schematic diagram of point B in the middle.

[0043] Numbers in the figure: 1, frame; 2, moving guide rod; 3, pressing plate; 4, positioning plate; 5, abutment plate; 51, penetration plate; 52, liquid inlet cavity; 53, liquid inlet hole; 6, filter plate; 61, filter press groove; 62, connecting hole; 63, solid part; 64, fixing rod; 7, filter cloth; 71, sleeve notch; 8, hanging mechanism; 81, expansion structure; 811, expansion block; 812, lifting hole; 813, connecting bias rod; 82, hanging Connecting rod; 821, lifting slider; 83, tensioning structure; 831, moving slide seat; 832, moving slide hole; 833, extension plate; 834, tensioning rod; 835, connecting pressure ring; 836, tensioning spring; 9, cleaning mechanism; 91, driving rack; 92, impact plate; 921, impact protrusion; 93, impact seat; 931, contact block; 932, torsion spring; 94, driving gear; 95, mounting shaft seat; 96, lifting rod. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0045] Reference Figure 1-11 , a filter press for convenient removal of filter cloth, comprising a frame 1, a positioning plate 4 is fixed on the left end above the frame 1, a pressing plate 3 is slidably arranged on the right end above the frame 1, the right end of the pressing plate 3 is connected to an external hydraulic cylinder for the left and right movement of the pressing plate 3, so that the pressing plate 3 can press a plurality of filter plates 6 together tightly to form a sealing structure, and a plurality of filter plates 6 are arranged between the positioning plate 4 and the pressing plate 3, and an abutting plate 5 is pressed between every two adjacent filter plates 6, and L-shaped plates are symmetrically arranged on the filter plates 6 and the pressing plate 3, which are slidably placed on the frame 1 through the L-shaped plates;

[0046] A hanging mechanism 8 is connected between the tops of every two adjacent filter plates 6. The hanging mechanism 8 includes two groups of expansion structures 81 symmetrically arranged at the front and rear of the filter plates 6. The lower ends of the two sides of the expansion structures 81 are rotatably connected to the upper ends of the adjacent filter plates 6, and a hanging rod 82 is arranged between the front and rear groups of expansion structures 81. The front and rear ends of the hanging rod 82 are respectively connected to a group of tensioning structures 83, and the tensioning structure 83 is connected to the cleaning mechanism 9.

[0047] A filter cloth 7 is hung on the hanging rod 82 . The filter cloth 7 is folded in half. Two ends of the filter cloth 7 are fixedly connected to the lower ends of two adjacent filter plates 6 . The abutment plate 5 is placed inside the filter cloth 7 and the two abut against each other.

[0048] The left and right side surfaces of the filter plate 6 are both recessed inward to form a filter press groove 61, and connecting holes 62 are formed through the left and right sides of the filter plate 6, and the connecting holes 62 are not connected to the filter chamber inside the filter plate 6. The outer surfaces of the filter press grooves 61 on the left and right sides are respectively provided with solid parts 63, and the solid parts 63 are aligned with the connecting holes 62. Drain holes are formed through the side of the filter plate 6, and the drain holes are connected to the filter chamber inside the filter plate 6. After the sewage is filtered on the surface of the filter plate 6, the water flow will enter the filter chamber through the filter holes on the surface of the filter plate 6, and then the clean water will be discharged outward through the drainage holes on the side.

[0049] The cross-sectional size and shape of the abutment plate 5 are consistent with those of the filter plate 6. A rectangular hole is formed through the middle of the abutment plate 5. Two groups of penetration plates 51 are symmetrically arranged in the rectangular hole. A gap is formed between the two groups of penetration plates 51 to form a liquid inlet cavity 52. ​​The middle of the penetration plate 51 is designed in a circular ring structure, and a liquid inlet hole 53 consistent with the connecting hole 62 is formed in the inner circle of the circular ring. The outer diameter of the circular ring is consistent with the outer diameter of the solid part 63.

[0050] When the abutment plate 5 is pressed between two adjacent filter plates 6, the ring can be pressed with the solid part 63, thereby forming a sealing structure, and the sewage cannot enter the space between the filter pressing groove 61 and the side of the filter cloth 7, but can only enter the space in the middle of the same group of filter cloths 7, that is, the liquid inlet cavity 52, and then the sewage can be pressed and filtered through the filter cloth 7, so that the filter cake stays on the two inner surfaces of the filter cloth 7;

[0051] The two sets of penetrating plates 51 both have outwardly protruding parts to form a compaction part, the thickness of the compaction part is consistent with the depth of the filter press groove 61, and the compaction part can penetrate into the filter press groove 61, thereby crimping the circular ring and the solid part 63, and can make the left and right sides of the filter cloth 7 spread outward, thereby increasing the space and facilitating the entry of sewage into the filter press.

[0052] The left and right sides of the filter cloth 7 are penetrated to form symmetrically distributed sleeve notches 71, the inner diameter of the sleeve notch 71 is smaller than the outer diameter of the ring and the solid part 63, and the inner diameter of the sleeve notch 71 is larger than the outer diameter of the liquid inlet hole 53 and the connecting hole 62. When the filter plate 6 is pressed and contacted with the abutment plate 5, the sleeve notch 71 can be pressed between the solid part 63 and the ring of the abutment plate 5, and the connecting hole 62 can be connected with the liquid inlet hole 53. The sleeve notch 71 is set to a reasonable size, so that when installing the filter cloth 7, it is not necessary to be too precise for the filter cloth 7, so that it has a certain error tolerance, thereby facilitating the installation of the filter cloth 7.

[0053] The width of the filter cloth 7 is greater than the width of the filter pressing groove 61 of the filter plate 6 , and the filter cloth 7 can contact the filter plate 6 and the abutment plate 5 at the front, back, top and bottom, and can be pressed together to form a sealing structure.

[0054] The expansion structure 81 includes an expansion block 811 symmetrically arranged in the middle above two adjacent filter plates 6, and two groups of connecting rods 813 are symmetrically arranged on the outside of the expansion block 811. The connecting rods 813 are rotatably connected to the outside of the expansion block 811 through axle pins, and the ends of the two connecting rods 813 away from the expansion block 811 are respectively rotatably connected to the upper surfaces of the two adjacent filter plates 6 through axle pins, and a hanging rod 82 is slidably arranged between the front and rear expansion blocks 811.

[0055] Two sets of fixing rods 64 are symmetrically arranged below the filter plate 6, and the filter cloth 7 is hung on the hanging rod 82, and the two ends of the filter cloth 7 are respectively fixed to the fixing rods 64 close to the bottom of the adjacent filter plate 6;

[0056] When installing the filter cloth 7, the middle position of the filter cloth 7 is overlapped on the hanging rod 82, and then the two ends of the filter cloth 7 are respectively fixed to the fixing rods 64 on the left and right sides by fasteners such as clips or screws. Before fixing, the filter cloth 7 is unfolded, and then the part of the filter cloth 7 placed above the hanging rod 82 is stretched forward and backward, and then fixed to the hanging rod 82 by fasteners such as clips or screws. At this time, the installation of the filter cloth 7 is completed. When disassembling, only the connection between the fixing rod 64 and the hanging rod 82 needs to be removed.

[0057] The tensioning structure 83 includes a movable slide 831 symmetrically arranged on the front and rear sides, and an extension plate 833 is integrally formed on the inner side of the movable slide 831. The extension plate 833 passes through the upper and lower parts to form a circular hole, and a tensioning rod 834 is slidably sleeved in the circular hole. The bottom ends of the two tensioning rods 834 are connected to the outer end of the hanging rod 82, and a connecting pressure ring 835 is fixed on the upper part of the tensioning rod 834 by screws. A tensioning spring 836 is abutted between the lower end of the connecting pressure ring 835 and the upper part of the extension plate 833, and the tensioning spring 836 is sleeved on the tensioning rod 834;

[0058] After the filter cloth 7 is connected to the hanging rod 82 and the fixing rod 64, the hanging rod 82 has a tendency to move upward under the action of the tensioning rod 834 and the tensioning spring 836, so that the filter cloth 7 can be properly tensioned so that wrinkles will not appear on its surface, and when the two adjacent filter plates 6 and the middle abutment plate 5 are pressed against each other, the filter cloth 7 can be deformed inward to a certain extent and placed in the filter press groove 61;

[0059] The unfolding block 811 is penetrated front and back to form a lifting hole 812, and a lifting slider 821 is set in the lifting hole 812 for sliding up and down. The hanging rod 82 is connected to the lifting slider 821, and the lifting slider 821 is fixedly sleeved on the hanging rod 82. The hanging rod 82 can move up and down in the lifting hole 812, which is convenient for changing the position height of the hanging rod 82 and adjusting the tension of the filter cloth 7. The position height of the connecting pressure ring 835 can be adjusted as needed. The higher the height of the connecting pressure ring 835 above the tensioning rod 834, the smaller the tendency of the tensioning spring 836 to reset upward, so that the upward force of the hanging rod 82 is smaller and the tension of the filter cloth 7 is lower, and vice versa.

[0060] The cleaning mechanism 9 includes a driving rack 91 fixed on the top of the movable slide 831, and an extension plate 833 of the movable slide 831 passes through the top and bottom to form a through hole, and a lifting rod 96 is slidably sleeved in the through hole, and the bottom end of the lifting rod 96 is connected to the top of the unfolding block 811, and a mounting shaft seat 95 is fixedly installed on the lifting rod 96, and an output shaft is rotatably installed on the mounting shaft seat 95 through a bearing, and a driving gear 94 is installed at one end of the output shaft, and the driving gear 94 is meshed and connected with the driving rack 91, and an impact plate 92 is installed at the other end of the output shaft, and the outer ring surface of the impact plate 92 is provided with a plurality of impact protrusions 921 distributed in a circumferential array;

[0061] The mounting shaft seat 95 is fixed on the lifting rod 96 by screws, and its position height is adjusted according to actual needs. The protruding length of the impact protrusion 921 can be changed accordingly according to actual needs, so that the displacement of the impact seat 93 and the tension rod 834 moving downward is greater than the displacement of the downward movement of the expansion block 811;

[0062] The top of the tension rod 834 is fixed with an impact seat 93, and a contact block 931 is rotatably arranged above the impact seat 93. When two adjacent filter plates 6 move away from each other, the expansion block 811 will drop accordingly under the action of the connecting bias rod 813, and the lifting rod 96 will also drive the driving gear 94 and the impact plate 92 to drop together. Since the driving gear 94 is meshed with the driving rack 91, the driving gear 94 will rotate accordingly, thereby rotating the impact plate 92.

[0063] When the unfolding block 811 moves downward, the hooking rod 82 will also move downward accordingly. When the hooking rod 82 moves downward, it will move rightward together with the unfolding block 811 and the moving slide seat 831 to ensure that the entire filter cloth 7 is in a tensioned state. In the process of moving downward, the top of the hooking rod 82 has a tendency to move upward under the action of the tensioning spring 836 and will contact the top of the lifting hole 812 and make it move downward together. When the impact plate 92 rotates, the impact protrusion 921 on the impact plate 92 will contact the impact seat 93 and make it move downward.

[0064] The impact protrusion 921 makes the impact seat 93 and the tensioning rod 834 move downwardly at a displacement greater than the displacement of the downward movement of the expansion block 811, that is, the hanging rod 82 will move downwardly for a certain distance, and the filter cloth 7 will be in a relaxed state at this time. When the impact protrusion 921 is out of contact with the impact seat 93, under the action of the tensioning spring 836, the hanging rod 82 will move upward together with the tensioning rod 834, and the filter cloth 7 will be in a tensioned state again at this time, so that the filter cloth 7 repeatedly performs the action of tensioning-relaxing-tensioning alternately, so as to shake off the mud cake attached to the surface of the filter cloth 7 and clean it.

[0065] The cross section of the contact block 931 is a right triangle structure, and the bottom end of one side of the inclined surface is rotatably connected to the upper surface of the impact seat 93 through an axle pin, and the axle pin is also provided with a torsion spring 932 for resetting the contact block 931. A notch is provided on the contact block 931, and the axle pin is installed in the notch, and the torsion spring 932 is sleeved on the axle pin. The torsion spring 932 can make the bottom of the contact block 931 return to its original position again after deflection and contact the upper surface of the impact seat 93.

[0066] The impact protrusion 921 is a 1 / 4 circular structure, one side of which is an arc-shaped structure and the other side is a straight structure, wherein the arc-shaped structure is used to contact the inclined surface of the contact block 931 and make the impact seat 93 move downward, and one side of the straight structure makes it possible for the impact seat 93 to instantly move upward and reset when the arc-shaped structure side of the impact protrusion 921 is not in contact with the inclined surface of the contact block 931, and one side of the straight structure is used to contact the right-angle surface of the contact block 931 and make it deflect with the axle pin as the axis, so that the impact disk 92 can rotate normally and the impact seat 93 will not move downward.

[0067] Two groups of movable guide rods 2 are symmetrically arranged front and back above the frame 1, and the movable slide seat 831 penetrates left and right to form a movable slide hole 832. The movable slide seat 831 is slidably connected to the movable guide rod 2 through the movable slide hole 832. When one of the filter plates 6 moves to the left, the expansion structure 81 will be unfolded as a whole. At this time, the entire hanging mechanism 8 and the cleaning mechanism 9 will also move accordingly, so that the corresponding filter cloth 7 can be unfolded and disassembled, and the mud cake after filtration can fall off from the surface of the filter cloth 7 during the unfolding process.

[0068] Working principle: When the filter press is actually working, the drainage holes of the multiple filter plates 6 are respectively connected with a pipe for discharging the water flow after the filtration, and the right end of the pressing plate 3 is connected with an external hydraulic cylinder, which is used to push the pressing plate 3 to move to the left, so that the multiple filter plates 6 can be tightly pressed between the positioning plate 4 and the pressing plate 3, wherein the positioning plate 4 is also provided with openings for entering sewage on the left and right sides, and the openings are connected with the sewage pipe, so that the sewage can enter the space between the multiple filter plates 6, and the sewage can be filtered, wherein the sludge will remain on the surface of the filter cloth 7, and the clean water will enter the filter chamber and be discharged through the drainage hole;

[0069] When the filter screen needs to be cleaned or disassembled, the pressing plate 3 moves to the rightmost end under the action of the hydraulic cylinder, and then the filter plate 6 at the rightmost end slides to the right along the frame 1 and approaches the pressing plate 3 through the external walking robot. At this time, the unfolding block 811 between the two adjacent filter plates 6 will move to the right and move downward at the same time, and the filter cloth 7 between the two adjacent filter plates 6 will also be unfolded accordingly. In the process of unfolding, the unfolding block 811 moves downward, and the hanging rod 82 will also move downward accordingly. It is worth mentioning that when the hanging rod 82 moves downward, it will move to the right together with the unfolding block 811 and the moving slide 831 to ensure that the entire filter cloth 7 is in a tensioned state, and in the process of moving downward, the top end of the hanging rod 82 has a tendency to move upward under the action of the tensioning spring 836, and will contact the top end of the lifting hole 812 and make it move downward together.

[0070] At the same time, the lifting rod 96 will also drive the driving gear 94 and the impact plate 92 to descend together. Since the driving gear 94 is meshed with the driving rack 91, the driving gear 94 will rotate accordingly, thereby causing the impact plate 92 to rotate. During the rotation of the impact plate 92, the impact protrusion 921 on the impact plate 92 will contact the impact seat 93 and make it move downward, wherein the impact protrusion 921 causes the impact seat 93 and the tensioning rod 834 to move downward by a displacement greater than the displacement thereof moving downward with the unfolding block 811, that is, the hanging rod 82 will move downward by a certain distance, and the filter cloth 7 will be in a relaxed state at this time. When the impact protrusion 921 is out of contact with the impact seat 93, under the action of the tensioning spring 836, the hanging rod 82 will move upward together with the tensioning rod 834, and the filter cloth 7 will be in a tensioned state again at this time, thereby causing the filter cloth 7 to repeatedly perform the alternating actions of tensioning-relaxing-tensioning, so as to shake off the mud cake attached to the surface of the filter cloth 7 and clean it.

[0071] When the filter cloth 7 is fully unfolded, the mud cake attached to its surface will also fall off from its surface. At this time, the surface can be washed by a water gun, and the fasteners connected to the fixing rod 64 and the hanging rod 82 can be removed. At this time, the filter cloth 7 can be removed from between two adjacent filter plates 6 as a whole, and then the multiple filter plates 6 are moved to the right in sequence by the walking robot, and the filter cloth 7 can be removed one by one in the above manner.

[0072] When installing the filter cloth 7, the middle position of the filter cloth 7 is overlapped on the hanging rod 82, and then the two ends of the filter cloth 7 are respectively fixed to the fixing rods 64 on the left and right sides by fasteners such as clips or screws, and before fixing, the filter cloth 7 is unfolded, and then the part of the filter cloth 7 placed above the hanging rod 82 is stretched forward and backward, and then it is fixed on the hanging rod 82 by fasteners such as clips or screws. At this time, the filter cloth 7 can be completely installed, and after the filter cloth 7 is connected to the hanging rod 82 and the fixing rod 64, the hanging rod 82 has a tendency to move downward under the action of the tensioning rod 834 and the tensioning spring 836, so that the filter cloth 7 can be properly tensioned so that no wrinkles appear on its surface, and when the two adjacent filter plates 6 and the middle abutting plate 5 are pressed against each other, the filter cloth 7 can be deformed inward to a certain extent and placed in the filter pressing groove 61;

[0073] At the same time, the hook rod 82 can move up and down in the lifting hole 812, so as to change the position height of the hook rod 82 and adjust the tension of the filter cloth 7. The position height of the connecting pressure ring 835 can be adjusted as needed. The higher the height of the connecting pressure ring 835 above the tensioning rod 834, the smaller the tendency of the tensioning spring 836 to return upward, so that the upward force of the hook rod 82 is smaller and the tension of the filter cloth 7 is lower, and vice versa.

[0074] By arranging multiple groups of hanging mechanisms 8 above the frame 1, in cooperation with the fixing rods 64 arranged below the filter plates 6, the left and right ends of the filter cloth 7 can be connected to the fixing rods 64, and the middle part thereof is connected to the hanging rods 82 in the hanging mechanism 8, so that only one group of filter cloth 7 needs to be installed between two adjacent filter plates 6, thereby reducing the number of filter cloths 7 in the entire filter press, simplifying the installation and removal methods of the filter cloths 7, and thus improving the installation and removal efficiency of the filter cloths 7. Solid parts 63 are arranged on the left and right sides of the filter plates 6, and an abutment plate 5 is pressed between two adjacent filter plates 6, which facilitates the installation of the filter cloth 7 while also ensuring the sealing effect and the normal operation of the filter plates 6;

[0075] By arranging the tensioning structure 83 on the hanging rod 82, the tensioning structure 83 can move up and down together with the hanging rod 82, so as to facilitate the unfolding and disassembly of the filter cloth 7, and during the installation process, the tensioning degree of the tensioning structure 83 can be adjusted as needed, so as to ensure the tension of the filter cloth 7 during installation, and prevent wrinkles, which is convenient for the subsequent filter pressing operation;

[0076] By arranging a cleaning mechanism 9 on the hanging mechanism 8, and the cleaning mechanism 9 is connected to the tensioning structure 83 and the expansion structure 81, during the unfolding of the filter cloth 7, the cleaning mechanism 9 can move downward together with the tensioning mechanism and the expansion structure 81, and it can make the hanging rod 82 continuously swing up and down in the process of moving downward through the tensioning structure 83, so that the filter cloth 7 can repeatedly perform the action of tensioning-relaxing-tensioning alternately, so as to shake off the mud cake attached to the surface of the filter cloth 7 and clean the mud cake on the surface of the filter cloth 7.

[0077] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present invention.

[0078] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0079] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A filter press with convenient filter cloth removal, comprising a frame (1), characterized in that: A positioning plate (4) is fixed at the upper left end of the frame (1), a pressing plate (3) is slidably arranged at the upper right end of the frame (1), and a plurality of filter plates (6) are arranged between the positioning plate (4) and the pressing plate (3), and an abutment plate (5) is pressed between every two adjacent filter plates (6); A hanging mechanism (8) is connected between the tops of every two adjacent filter plates (6), the hanging mechanism (8) comprising two groups of expansion structures (81) symmetrically arranged at the front and rear of the filter plates (6), the lower ends of both sides of the expansion structures (81) being rotatably connected to the upper ends of the two adjacent filter plates (6), and a hanging rod (82) being arranged between the front and rear groups of expansion structures (81), the front and rear ends of the hanging rod (82) being respectively connected to a group of tensioning structures (83), and the tensioning structure (83) being connected to a cleaning mechanism (9); A filter cloth (7) is hung on the hanging rod (82), the filter cloth (7) is folded in half, two ends of the filter cloth (7) are fixedly connected to the lower ends of two adjacent filter plates (6), and the abutment plate (5) is placed inside the filter cloth (7) and the two abut against each other.

2. A filter press with convenient filter cloth removal according to claim 1, characterized in that: The left and right side surfaces of the filter plate (6) are both recessed inwards to form a filter press groove (61); the left and right sides of the filter plate (6) are penetrated to form a connecting hole (62); the connecting hole (62) is not connected to the filter chamber inside the filter plate (6); the outer surfaces of the left and right filter press grooves (61) are respectively provided with a solid portion (63); the solid portion (63) is aligned with the connecting hole (62).

3. A filter press with convenient filter cloth removal according to claim 2, characterized in that: The cross-sectional dimensions and shape of the abutment plate (5) are consistent with those of the filter plate (6); a rectangular hole is formed through the middle of the abutment plate (5) on the left and right; two groups of penetration plates (51) are symmetrically arranged in the rectangular hole; a gap is formed between the two groups of penetration plates (51) to form a liquid inlet cavity (52); the middle of the penetration plate (51) is designed as a circular ring structure, and a liquid inlet hole (53) consistent with the connecting hole (62) is formed in the inner ring; the outer diameter of the circular ring is consistent with the outer diameter of the solid part (63); The two groups of penetration plates (51) both have outwardly protruding portions to form a compaction portion, and the thickness of the compaction portion is consistent with the depth of the filter press groove (61).

4. A filter press with convenient filter cloth removal according to claim 3, characterized in that: The filter cloth (7) is penetrated on both sides thereof to form symmetrically distributed sleeve notches (71), wherein the inner diameter of the sleeve notches (71) is smaller than the outer diameter of the circular ring and the solid portion (63), and the inner diameter of the sleeve notches (71) is larger than the outer diameters of the liquid inlet hole (53) and the communication hole (62); The width of the filter cloth (7) is greater than the width of the filter pressing groove (61) of the filter plate (6).

5. The filter press with convenient filter cloth removal according to claim 1, characterized in that: The expansion structure (81) comprises an expansion block (811) symmetrically arranged in the middle above two adjacent filter plates (6), two groups of connecting rods (813) are symmetrically arranged on the outside of the expansion block (811), the connecting rods (813) are rotatably connected to the outside of the expansion block (811) via axle pins, one end of the two connecting rods (813) away from the expansion block (811) is respectively rotatably connected to the upper surface of the two adjacent filter plates (6) via axle pins, and a hanging rod (82) is slidably arranged between the two groups of expansion blocks (811) in the front and rear directions; Two groups of fixing rods (64) are symmetrically arranged below the filter plate (6), the filter cloth (7) is hung on the hanging rods (82), and the two ends of the filter cloth (7) are respectively fixed to the fixing rods (64) located near the bottom of the adjacent filter plate (6).

6. A filter press with convenient filter cloth removal according to claim 5, characterized in that: The tensioning structure (83) comprises a movable slide (831) symmetrically arranged on the front and rear sides, an extension plate (833) is integrally formed on the inner side of the movable slide (831), a circular hole is formed through the upper and lower parts of the extension plate (833), a tensioning rod (834) is slidably sleeved in the circular hole, the bottom ends of the two tensioning rods (834) are connected to the outer end of the hanging rod (82), a connecting pressure ring (835) is fixed on the top of the tensioning rod (834) by screws, a tensioning spring (836) is abutted between the lower end of the connecting pressure ring (835) and the top of the extension plate (833), and the tensioning spring (836) is sleeved on the tensioning rod (834); The unfolding block (811) is penetrated front and back to form a lifting hole (812), a lifting slider (821) is provided in the lifting hole (812) for sliding up and down, the hanging rod (82) is connected to the lifting slider (821), and the lifting slider (821) is fixedly sleeved on the hanging rod (82).

7. A filter press with convenient filter cloth removal according to claim 6, characterized in that: The cleaning mechanism (9) comprises a driving rack (91) fixed on the top of a movable slide (831); an extension plate (833) on the side of the movable slide (831) penetrates up and down to form a through hole; a lifting rod (96) is slidably sleeved up and down in the through hole; the bottom end of the lifting rod (96) is connected to the top of the unfolding block (811); a mounting shaft seat (95) is fixedly mounted on the lifting rod (96); an output shaft is rotatably mounted on the mounting shaft seat (95) via a bearing; a driving gear (94) is mounted on one end of the output shaft; the driving gear (94) is meshingly connected to the driving rack (91); an impact plate (92) is mounted on the other end of the output shaft; a plurality of impact protrusions (921) distributed in a circumferential array are provided on the outer ring surface of the impact plate (92); An impact seat (93) is fixed to the top end of the tensioning rod (834), and a contact block (931) is rotatably arranged above the impact seat (93).

8. The filter press with convenient filter cloth removal according to claim 7, characterized in that: The cross section of the contact block (931) is a right-angled triangle structure, and the bottom end of one side of the inclined surface is rotatably connected to the upper surface of the impact seat (93) via a shaft pin, and the shaft pin is also provided with a torsion spring (932) for resetting the contact block (931); The impact protrusion (921) is a 1 / 4 circular structure, one side of which is an arc-shaped structure and the other side of which is a straight line structure.

9. The filter press with convenient filter cloth removal according to claim 6, characterized in that: Two groups of movable guide rods (2) are symmetrically arranged on the upper side of the frame (1), and the movable slide seat (831) penetrates the left and right sides to form movable slide holes (832). The movable slide seat (831) is slidably connected to the movable guide rods (2) via the movable slide holes (832).

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