A mine plate and frame type filter press device

Abstract

The application discloses a mine plate-and-frame type filter pressing device, which comprises a rack, a thrust plate fixedly arranged on the rack, a push plate slidingly connected to the rack, a piston rod of a hydraulic cylinder connected to the push plate, a plurality of plate-and-frame assemblies and pressing plates alternately arranged between the thrust plate and the push plate, a center hole arranged at the center position of the plate-and-frame assemblies and the pressing plates, a feeding pipe connected to the thrust plate, and steel wires connected between any adjacent plate-and-frame assemblies and pressing plates.

Description

Technical Field

[0001] This invention relates to the field of filter press equipment technology, and in particular to a plate and frame filter press device for mining. Background Technology

[0002] A filter press is a solid-liquid separation device widely used in industries such as chemical, pharmaceutical, and metallurgy. Currently, the beneficiation processes used in gold mines are mainly cyanide carbon-in-pulp and zinc cyanide powder replacement processes. Due to the use of cyanide leaching, the pollution of the environment by highly toxic cyanide has become a major problem faced by gold mines. Therefore, plate and frame filter presses are gradually being promoted and used in gold mines. Using filter press technology to treat tailings can effectively reduce gold loss, reduce wastewater treatment volume, reuse cyanide in the solution, achieve dry stacking of tailings, and solve the tailings pollution problem.

[0003] Existing plate and frame filter presses generally include a frame with thrust plates and push plates. Several plates and frames, and pressure plates are alternately arranged between the thrust plates and push plates. Filter cloth is placed inside the plates and frames. During filtration, a hydraulic cylinder presses the plates and frames together, and the slurry is fed in under high pressure through the central feed hole. Due to the high pressure, the water in the slurry passes through the filter cloth and enters the filtration chamber formed by the plates and frames and filter cloth, and is discharged. The remaining slurry forms a filter cake that remains in the filter cake chamber formed by the filter cloth and pressure plates. To unload the filter cake, the hydraulic cylinder is first shut off, and then a robotic arm is used to separate the plates and frames one by one, exposing the filter cake, which falls off by its own weight. However, in actual production, because the filter... The filter cake forms clumps and has a strong adhesion to the filter cloth surface, making it difficult for the filter cake to detach under its own weight. A robotic arm is needed to lift and release the filter cake, utilizing free-fall acceleration to completely remove it. This method of removing filter cake is time-consuming (requiring the robotic arm to manually separate the filter cakes from the frames and pressure plates one by one), and it cannot achieve one-time detachment, resulting in low efficiency and high production costs associated with the robotic arm. Furthermore, the filter cloth requires periodic replacement after prolonged use. Currently, replacing the filter cloth requires removing the frame and unscrewing the internal bolts, making the process cumbersome, inefficient, and disrupting normal production schedules. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] The purpose of this invention is to provide a plate and frame filter press for mining, so as to solve the technical problems of excessively long filter cake unloading time, low working efficiency, and cumbersome filter cloth replacement in existing filter presses.

[0006] (II) Technical Solution

[0007] The present invention relates to a plate and frame filter press device for mining, comprising a frame, a thrust plate fixedly mounted on the frame, a push plate slidably connected to the frame, the push plate being connected to the piston rod of a hydraulic cylinder, a plurality of alternating plate and frame assemblies and pressure plates arranged between the thrust plate and the push plate, a central material hole being provided at the center of each plate and frame assembly and each pressure plate, a feed pipe being connected to the thrust plate, and steel wire ropes connecting any adjacent plate and frame assemblies and pressure plates, with L-shaped first... A sliding arm has a vertical hole, and a buffer vibration ball assembly is installed in the vertical hole. The buffer vibration ball assembly rolls on the frame. L-shaped second sliding arms are connected to both the front and rear ends of the pressure plate. The second sliding arms slide on the frame. Lifting rollers are rotatably connected to both sides of the bottom end of the plate frame assembly. Wedge blocks that match the positions of the lifting rollers are fixedly connected to both sides of the bottom end of the pressure plate. When the lifting rollers contact the wedge blocks, the plate frame assembly is lifted upward.

[0008] Furthermore, the buffer vibration ball assembly includes a stud screwed into the vertical hole. A first compression spring is connected to the bottom end of the stud, and a vibration steel ball is disposed at the bottom end of the first compression spring. An annular plate is connected to the bottom end of the vertical hole. The inner diameter of the annular plate is smaller than the diameter of the vibration steel ball, and the annular plate is used to limit the lower limit position of the vibration steel ball.

[0009] Furthermore, the plate and frame assembly includes a plate and frame, on both sides of the plate and frame, a filter cloth is provided, a pressure frame is provided on the outside of the filter cloth, a central material hole is provided at the center of the plate and frame and the filter cloth, a pressure ring is provided at the center of the pressure frame, the pressure ring is connected to the pressure frame through a connecting ridge, and horizontal holes are provided on both the plate and frame and the pressure frame, a rotating fastening member is slidably inserted into the horizontal hole, the rotating fastening member presses and fixes the plate and frame, the filter cloth and the pressure frame.

[0010] Furthermore, filter troughs are provided on both sides of the plate frame, and a water collection hole is horizontally opened at the bottom of the plate frame. The water collection hole is connected to the filter trough. A drain pipe is installed on the plate frame and is connected to the water collection hole. A water collection trough is provided below the drain pipe and is fixedly installed on the frame.

[0011] Furthermore, the rotating buckle includes a sliding post that is slidably inserted into the transverse hole. Rotary arms are connected to both ends of the sliding post, and hemispherical buckles are connected to the inner side of the rotary arms.

[0012] Furthermore, a spring groove is provided on the inner side of the pressure frame, coaxial with the transverse hole, and a second compression spring is installed in the spring groove. The second compression spring is fitted on the slide column, and the other end of the second compression spring is in contact with the plate frame.

[0013] Furthermore, two hanging holes are provided on the filter cloth, a lifting strap is provided on the filter cloth, and hanging pins matching the hanging holes are provided on both sides of the plate frame. The hanging pins are inserted into the hanging holes, and hanging pin holes matching the hanging pins are provided on the inner side of the pressure frame.

[0014] Furthermore, filter cake grooves are provided on both sides of the pressure plate, and several indentation ridges are connected in the filter cake grooves. All the indentation ridges are centrally symmetrical about the axis of the central material hole.

[0015] Furthermore, steel wire rope holes are vertically formed on both the first and second sliding arms, and steel wire ropes are inserted into the steel wire rope holes. Top screw holes are formed on the outer walls of the first and second sliding arms, and the top screw holes are connected to the steel wire rope holes. Top screws are screwed into the top screw holes.

[0016] (III) Beneficial Effects

[0017] The beneficial effects of this invention are as follows: 1. This invention designs a steel wire rope to flexibly connect the plate and frame assembly and the pressure plate, enabling them to work together to achieve one-time filter cake unloading. Lifting rollers and wedge blocks are designed on the plate and frame assembly and the pressure plate respectively, so that the plate and frame assembly is in a lifted state when pressed, and the filter cake is unloaded by allowing the plate and frame assembly to fall freely, using gravity to smoothly detach the filter cake. Simultaneously, a buffer vibration ball assembly is designed so that the plate and frame assembly can continue to vibrate elastically after the filter cake is unloaded, thereby thoroughly shaking off the filter cake residue and making the filter cake unloading operation more thorough. 2. The invention designs a plate and frame assembly that allows for quick and online replacement of the filter cloth, and designs a dedicated rotating clamping component, making the pressing and loosening of the filter cloth faster and more convenient, ensuring the normal operation of the filter press, and is worthy of widespread promotion and use. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a top view of the present invention;

[0020] Figure 3 This is a perspective view of the plate and frame assembly of the present invention;

[0021] Figure 4 This is a perspective view of the pressure plate of the present invention;

[0022] Figure 5This diagram illustrates the movement of the plate frame assembly and pressure plate.

[0023] Figure 6 This is an exploded view of the plate and frame assembly of the present invention;

[0024] Figure 7 for Figure 5 Sectional view along AA;

[0025] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of part B;

[0026] Figure 9 This is a diagram demonstrating the installation process of the filter cloth of the present invention;

[0027] Figure 10 for Figure 9 Sectional view along DD;

[0028] In the diagram, the components are: frame 1, plate frame 2, filter cloth 3, pressure frame 4, pressure plate 5, center material hole 6, first sliding arm 7, vertical hole 9, stud 10, first compression spring 11, vibrating steel ball 12, wire rope hole 13, wire rope 14, second sliding arm 16, wedge block 17, lifting roller 18, indentation ridge 19, drain pipe 20, water collection trough 21, horizontal hole 22, spring groove 23, second compression spring 24, sliding column 25, rotating arm 26, buckle 27, push plate 28, thrust plate 29, hydraulic cylinder 30, feed pipe 31, hanging hole 32, lifting belt 33, hanging pin 34, water filtration trough 35, filter cake trough 36, pressure ring 37, connecting ridge 38, water collection hole 39, annular plate 40, and top screw 42. Detailed Implementation

[0029] Example 1

[0030] like Figures 1 to 5As shown, a mining plate and frame filter press includes a frame 1 with two longitudinal beams serving as a travel track. A thrust plate 29 is fixedly mounted on the frame 1, and a push plate 28 is slidably connected to the frame 1. The push plate 28 is connected to the piston rod of a hydraulic cylinder 30. Several alternating plate and frame assemblies and pressure plates 5 are arranged between the thrust plate 29 and the push plate 28. During filter pressing, the filter cake is located in the cavity formed between the plate and frame assemblies and the pressure plates 5. To ensure the sealing of the cavity after pressing, sealing rings are provided between the plate and frame assemblies and the pressure plates 5 (details omitted here). A central material hole 6 is provided at the center of each plate and frame assembly and each pressure plate 5. The central material hole 6 is a channel for high-pressure slurry. A feed pipe 31 is connected to the thrust plate 29. The slurry in the feed pipe 31 is powered by a slurry pump. A steel wire rope 14 is connected between any adjacent plate and frame assemblies and pressure plates 5. The steel wire rope 14 can be externally covered with... The rope with the rubber protective layer is connected to L-shaped first sliding arms 7 at both the front and rear ends of the plate frame assembly. Vertical holes 9 are vertically formed on the first sliding arms 7, and buffer vibration ball assemblies are installed within the vertical holes 9. The buffer vibration ball assemblies roll on the frame 1. L-shaped second sliding arms 16 are connected to both the front and rear ends of the pressure plate 5, and the second sliding arms 16 slide on the frame 1. The L-shaped first sliding arms 7 and second sliding arms 16 have a front and rear limiting function to prevent the plate frame assembly and pressure plate 5 from swaying back and forth. Lifting rollers 18 are rotatably connected to both sides of the bottom end of the plate frame assembly. Wedge blocks 17, matching the positions of the lifting rollers 18, are fixedly connected to both sides of the bottom end of the pressure plate 5. The wedge blocks 17 have wedge-shaped surfaces facing the lifting rollers 18. When the lifting rollers 18 contact the wedge blocks 17, the plate frame assembly is lifted upwards. More specifically... Figure 5 The process of the plate and frame assembly and the pressure plate 5 changing from a loose state to a tight state is demonstrated. When the plate and frame assembly and the pressure plate 5 are tightened, the lifting roller 18 moves upward along the wedge surface on the wedge block 17 until the plate and frame assembly and the pressure plate 5 are completely tightened, thereby putting the plate and frame assembly in a lifted state (at this time, the buffer vibration ball assembly is not in contact with the frame 1). When the plate and frame assembly and the pressure plate 5 are released to unload the filter cake, the plate and frame assembly falls freely until the buffer vibration ball assembly contacts the frame 1, thereby using gravity acceleration to unload the filter cake. The buffer vibration ball assembly has the function of protecting the first sliding arm 7 (preventing the first sliding arm 7 from rigidly colliding with the frame 1) and also has the function of elastic vibration, thereby thoroughly shaking off the filter cake residue on the plate and frame assembly.

[0031] like Figure 7 and Figure 8As shown, the buffer vibration ball assembly includes a stud 10, which is screwed into the vertical hole 9 (the vertical hole has an internal thread). A first compression spring 11 is connected to the bottom end of the stud 10, and a vibration steel ball 12 is provided at the bottom end of the first compression spring 11. An annular plate 40 is connected to the bottom end of the vertical hole 9. The inner diameter of the annular plate 40 is smaller than the diameter of the vibration steel ball 12. The annular plate 40 is used to limit the lower limit position of the vibration steel ball 12.

[0032] like Figure 4 As shown, filter cake grooves 36 are provided on both sides of the pressure plate 5. In order to make the filter cake easier to break during the falling process and facilitate smooth transportation, a number of indentation ridges 19 are connected in the filter cake grooves 36. All the indentation ridges 19 are centrally symmetrical about the axis of the central material hole 6. The indentation ridges 19 make the surface of the filter cake form radial indentations, which are easy to break.

[0033] like Figure 1 , Figure 3 , Figure 4 and Figure 8 As shown, steel wire rope holes 13 are vertically provided on the first sliding arm 7 and the second sliding arm 16. A steel wire rope 14 is inserted into the steel wire rope hole 13. A top screw hole is provided on the outer wall of the first sliding arm 7 and the second sliding arm 16. The top screw hole is connected to the steel wire rope hole 13. A top screw 42 is screwed into the top screw hole. The top screw 42 is used to fix the steel wire rope 14 and can adjust the length of the steel wire rope 14 according to actual needs.

[0034] Example 2

[0035] Example 2 further discloses the specific structure of the plate and frame assembly based on Example 1, so as to facilitate quick replacement of the filter cloth 3, as follows: Figure 6 , Figure 7 and Figure 9As shown, the plate and frame assembly includes a plate frame 2, with filter cloths 3 arranged on both sides of the plate frame 2. A pressure frame 4 is arranged on the outer side of the filter cloths 3. A central material hole 6 is provided at the center of both the plate frame 2 and the filter cloths 3. A pressure ring 37 is provided at the center of the pressure frame 4. The pressure ring 37 is connected to the pressure frame 4 via a connecting rib 38. Horizontal holes 22 are provided on both the plate frame 2 and the pressure frame 4. A rotating fastening member is slidably inserted into the horizontal hole 22. The rotating fastening member holds the filter cloths 3 in place. The plate frame 2, filter cloth 3, and pressure frame 4 are pressed and fixed together, and sealing rings are provided between the plate frame 2, filter cloth 3, and pressure frame 4. Water filtration grooves 35 are provided on both sides of the plate frame 2. A water collection hole 39 is horizontally opened at the bottom of the plate frame 2. The water collection hole 39 is connected to the water filtration groove 35. A drain pipe 20 is installed on the plate frame 2. The drain pipe 20 is connected to the water collection hole 39. A water collection trough 21 is provided below the drain pipe 20. The water collection trough 21 is fixedly installed on the frame 1.

[0036] More specifically, such as Figure 6 , Figure 9 and Figure 10 As shown, the rotating fastening component includes a sliding column 25, which is slidably inserted into the horizontal hole 22. Rotary arms 26 are connected to both ends of the sliding column 25. A hemispherical fastener 27 is connected to the inner side of each rotary arm 26. To automatically separate the pressure frame 4 from the plate frame 2, a spring groove 23 is coaxially formed on the inner side of the pressure frame 4 with the horizontal hole 22. A second compression spring 24 is installed in the spring groove 23 and is fitted onto the sliding column 25. The other end of the second compression spring 24 contacts the plate frame 2. To enable quick replacement of the filter cloth 3, two hanging holes 32 are provided on the filter cloth 3, and a lifting strap 33 is provided on the filter cloth 3. Hanging pins 34 matching the hanging holes 32 are provided on both sides of the plate frame 2 and are inserted into the hanging holes 32. A matching hanging pin is also provided on the inner side of the pressure frame 4. The tightening and loosening process of the rotating fastening component is as follows: Figure 9 As shown, when loosening, rotate the hemispherical buckle 27 outward to disengage it from the pressure frame 4. At this time, due to the action of the second spring 24, the pressure frame 4 is springed open, thus loosening the filter cloth 3. The filter cloth 3 can then be replaced. When replacing the filter cloth 3, use the carrying strap 33 to place the filter cloth 3 into the gap between the pressure frame 4 and the plate frame 2, and hang the hanging hole 32 on the hanging pin 34 to complete the positioning of the filter cloth 3. Then, rotate the buckle 27 inward to press it onto the pressure frame 4 to re-tighten the filter cloth 3. To ensure smooth rotation of the buckle 27, as follows... Figure 10 As shown, a chamfer can be set on the outer edge of the pressure frame 4.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mine plate and frame filter press device, comprising a rack (1), a thrust plate (29) is fixedly arranged on the rack (1), a push plate (28) is slidingly connected on the rack (1), the push plate (28) is connected with a piston rod of a hydraulic cylinder (30), a plurality of alternately arranged plate and frame assemblies and a pressing plate (5) are arranged between the thrust plate (29) and the push plate (28), a center hole (6) is arranged at the center position of the plate and frame assembly and the pressing plate (5), an inlet pipe (31) is connected on the thrust plate (29), characterized in that: Steel wire rope (14) is connected between any adjacent plate frame assembly and pressing plate (5), L-shaped first sliding arm (7) is connected at front and rear ends of the plate frame assembly, vertical hole (9) is vertically formed on the first sliding arm (7), buffer vibration ball assembly is installed in the vertical hole (9), the buffer vibration ball assembly rolls and walks on the rack (1), L-shaped second sliding arm (16) is connected at front and rear ends of the pressing plate (5), the second sliding arm (16) slides and walks on the rack (1), lifting roller (18) is rotatably connected at both sides of the bottom end of the plate frame assembly, wedge block (17) matching with the position of the lifting roller (18) is fixedly connected at both sides of the bottom end of the pressing plate (5), when the lifting roller (18) contacts with the wedge block (17), the plate frame assembly is lifted upward.

2. The plate-and-frame filter press device for mining according to claim 1, characterized in that: The buffer vibration ball assembly comprises stud (10), the stud (10) is screwed in the vertical hole (9), first compression spring (11) is connected at the bottom end of the stud (10), vibration steel ball (12) is arranged at the bottom end of the first compression spring (11), annular sheet (40) is connected at the bottom end of the vertical hole (9), the inner diameter of the annular sheet (40) is smaller than the diameter of the vibration steel ball (12), the annular sheet (40) is used for limiting the lower limit position of the vibration steel ball (12).

3. The plate-and-frame filter press device for mining according to claim 1, characterized in that: The plate frame assembly comprises plate frame (2), filter cloth (3) is arranged at both sides of the plate frame (2), pressing frame (4) is arranged outside the filter cloth (3), the center material hole (6) is arranged at the center positions of the plate frame (2) and the filter cloth (3), pressing ring (37) is arranged at the center position of the pressing frame (4), the pressing ring (37) is connected with the pressing frame (4) through connecting edge (38), horizontal hole (22) is horizontally formed on the plate frame (2) and the pressing frame (4), rotating buckling piece is slidingly inserted in the horizontal hole (22), the rotating buckling piece tightly fixes the plate frame (2), the filter cloth (3) and the pressing frame (4).

4. The plate-and-frame filter press device for mining according to claim 3, characterized in that: Water filtering groove (35) is arranged on both side surfaces of the plate frame (2), water collecting hole (39) is horizontally formed at the bottom of the plate frame (2), the water collecting hole (39) is communicated with the water filtering groove (35), water drainage pipe (20) is installed on the plate frame (2), the water drainage pipe (20) is communicated with the water collecting hole (39), water collecting tank (21) is arranged below the water drainage pipe (20), the water collecting tank (21) is fixedly installed on the rack (1).

5. The plate-and-frame filter press device for mining according to claim 3, characterized in that: The rotating buckling piece comprises slide column (25), the slide column (25) is slidingly inserted in the horizontal hole (22), rotating arm (26) is connected at both ends of the slide column (25), hemispherical buckling (27) is connected at the inner side of the rotating arm (26).

6. A mine plate and frame filter press device according to claim 5, characterised in that: A spring slot (23) is arranged coaxially with the transverse hole (22) on the inner side of the pressing frame (4), a second compression spring (24) is arranged in the spring slot (23), the second compression spring (24) is sleeved on the sliding column (25), and the other end of the second compression spring (24) is in contact with the plate frame (2).

7. The plate-and-frame filter press device for mining according to claim 6, characterized in that: Two hanging holes (32) are arranged on the filter cloth (3), a carrying strap (33) is arranged on the filter cloth (3), hanging pins (34) matched with the hanging holes (32) are arranged on the two side surfaces of the plate frame (2), the hanging pins (34) are inserted into the hanging holes (32), and a hanging pin hole matched with the hanging pin (34) is arranged on the inner side surface of the pressing frame (4).

8. The plate-and-frame filter press device for mining according to claim 1, characterized in that: Filter cake slots (36) are arranged on the two side surfaces of the pressing plate (5), a plurality of indentation edges (19) are connected in the filter cake slots (36), and all the indentation edges (19) are centrally symmetric about the axis of the center material hole (6).

9. The plate-and-frame filter press device for mining according to claim 1, characterized in that: Steel wire rope holes (13) are vertically arranged on the first sliding arm (7) and the second sliding arm (16), steel wire ropes (14) are inserted into the steel wire rope holes (13), a jacking pin hole is arranged on the outer wall of the first sliding arm (7) and the second sliding arm (16) and is in communication with the steel wire rope hole (13), and a jacking pin (42) is screwed into the jacking pin hole.

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