Back-blowing pressure-reducing tank of filter press

Abstract

A filter plate is arranged in a box body, a chamber of the box body is divided into an upper chamber and a lower chamber, an air inlet is formed in the top of the upper chamber, the upper end of the air inlet is in butt joint with the air outlet end of a blowback air discharge pipe, a barrel cover is contained in the upper chamber, and the lower end of the air inlet is covered with the barrel cover. A plurality of first-stage release ports communicated with the upper chamber are formed in the side wall of the barrel cover, meshes of the filter plate serve as second-stage release ports, and a plurality of third-stage release ports are formed in the peripheral wall of the lower chamber. Compared with the prior art, multi-stage diversion, dilution, pressure reduction and speed reduction are carried out between the blowback air discharge pipe and the atmosphere, blowback air and mineral aggregate chatter noise are avoided, ore splashing of the collection pool is avoided, and sanitation of a workshop is guaranteed.

Description

Technical Field

[0001] The utility model relates to concentrate water filtration equipment, in particular to an air back-blowing and pressure-reducing box of a filter press. Background Art

[0002] In the processing of lead-zinc concentrate slime, the slime is dewatered by a filter press, reducing the water content from 60% to about 20%. After the filter press completes the pressure filtration and dewatering and releases the filter cake, it is back-blown by high-pressure air of about 0.7 Mpa, and the residual ore on the filter disc is introduced into the collection pool through the back-blowing gas discharge pipe.

[0003] It is actually found that when the back-blowing gas and its ore are directly released into the collection pool through the back-blowing gas discharge pipe, it will not only cause noise pollution, but also cause the ore in the collection pool to splash, affecting the sanitary environment of the workshop. Content of the Utility Model

[0004] The utility model aims to solve at least one of the above-mentioned technical problems, and provides an air back-blowing and pressure-reducing box of a filter press, which can perform multi-stage dispersion and pressure reduction on the back-blowing gas, avoiding noise pollution and ore splashing.

[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] An air back-blowing and pressure-reducing box of a filter press includes a box body, a filter plate and a cylinder cover. The filter plate is arranged in the box body, dividing the cavity of the box body into an upper chamber and a lower chamber. An air inlet is opened at the top of the upper chamber, and the upper end of the air inlet is adapted to be connected to the outlet end of the back-blowing gas discharge pipe. The cylinder cover is accommodated in the upper chamber and covers the lower end of the air inlet. A plurality of first-stage release ports communicating with the upper chamber are arranged on the side wall of the cylinder cover. The mesh of the filter plate serves as a second-stage release port, and a plurality of third-stage release ports are arranged on the peripheral wall of the lower chamber.

[0007] Compared with the prior art, the beneficial effects of the present application include: there are multi-stage shunting, dilution, pressure reduction and speed reduction between the back-blowing gas discharge pipe (0.7 Mpa) and the atmosphere (0.1 Mpa). The high-pressure and high-speed back-blowing gas does not directly spray towards the atmosphere quickly, but after multi-stage shunting, dilution, weakening and changing the airflow direction, it is diluted into the atmosphere again, avoiding the high-flow-rate difference boundary and high-flow-rate difference eddy current of the fluid, avoiding the flutter noise of the back-blowing gas and its ore, avoiding the direct spraying of the high-pressure and high-speed back-blowing gas into the collection pool, avoiding the ore splashing in the collection pool, and ensuring the hygiene of the workshop.

[0008] As an improvement of the above technical scheme, the box body includes an upper box shell and a lower box shell, and the upper box shell and the lower box shell are detachably connected to jointly clamp the filter plate.

[0009] As an improvement of the above technical scheme, a flange is arranged on the inner top of the upper chamber, the flange surrounds the air inlet and is adapted to be threadedly connected to the cylinder cover.

[0010] As an improvement of the above technical solution, the inner wall of the upper chamber is provided with air-absorbing shock-absorbing cotton facing the primary release port.

[0011] As an improvement of the above technical solution, the inner wall of the upper chamber is provided with a plurality of groups of slots corresponding to the air-attached shock-absorbing cotton one by one, each group of the slots is suitable for limiting the two ends of the air-attached shock-absorbing cotton, the air-attached shock-absorbing cotton is suitable for being inserted into or removed from the slots along the up and down directions, and the upper box shell presses the filter plate through the air-attached shock-absorbing cotton.

[0012] As an improvement of the above technical solution, a plurality of groups of the first-level release ports are arranged at intervals along the up-down direction on the cylinder cover, and two adjacent groups of the first-level release ports are staggered.

[0013] As an improvement of the above technical solution, the secondary release port includes an inverted cone hole and a straight hole connected to the lower end of the inverted cone hole, and the secondary release ports of the filter plate array are pressed against each other.

[0014] As an improvement of the above technical solution, a docking nozzle is protrudingly provided on the top of the box body, and the docking nozzle is suitable for threaded connection with the air outlet end of the back-blowing air discharge pipe.

[0015] As an improvement of the above technical solution, the box body is made of Q235 steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0017] Figure 1 This is a structural schematic diagram of a back-blowing pressure reducing box of a filter press according to an embodiment of the utility model;

[0018] Figure 2 for Figure 1 A three-dimensional perspective cutaway view of a filter press backflush pressure relief box is shown;

[0019] Figure 3 for Figure 1 A front-view cross-sectional view of a filter press back-blowing pressure relief box is shown;

[0020] Figure 4 for Figure 1 An exploded view of the filter press backflush pressure relief box is shown;

[0021] Figure 5 for Figure 1 The working installation diagram of the filter press back-blowing pressure reducing box is shown.

[0022] The accompanying drawings are only one specific embodiment of the present invention, and the form and structure of this specific embodiment should not limit the expansion of other embodiments.

[0023] Filter press 100;

[0024] Reverse blowing exhaust pipe 200;

[0025] Box body 310, upper box shell 311, air inlet 311a, flange 311b, docking nozzle 311c, lower box shell 312, three-stage release port 312a, upper chamber 313, lower chamber 314;

[0026] Filter plate 320, secondary release port 321;

[0027] Cylinder cover 330, primary release port 331;

[0028] Collection pool 400. Specific implementation mode

[0029] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0030] Refer to Figures 1 to 5 , the present invention provides a reverse blowing and pressure reducing box for a filter press, including a box body 310, a filter plate 320 and a cylinder cover 330. The filter plate 320 is arranged inside the box body 310, dividing the cavity of the box body 310 into an upper chamber 313 and a lower chamber 314. An air inlet 311a is opened at the top of the upper chamber 313. The upper end of the air inlet 311a is adapted to be docked with the outlet end of the reverse blowing exhaust pipe 200. The cylinder cover 330 is accommodated in the upper chamber 313 and covers the lower end of the air inlet 311a. A plurality of primary release ports 331 communicating with the upper chamber 313 are arranged on the side wall of the cylinder cover 330. The mesh of the filter plate 320 serves as a secondary release port 321. A plurality of three-stage release ports 312a are arranged on the peripheral wall of the lower chamber 314.

[0031] The operation process of the present invention is as follows: Refer to Figure 5 , the outlet end of the reverse blowing exhaust pipe 200 extends into the collection pool 400. The pressure reducing box is docked with the outlet end of the reverse blowing exhaust pipe 200, that is, the upper end of the air inlet 311a of the upper chamber 313 of the pressure reducing box is docked with the reverse blowing gas and its ore;

[0032] Reverse blowing is performed inside the filter press 100. The reverse blowing gas and its ore are introduced into the pressure reducing box through the reverse blowing exhaust pipe 200. That is, the reverse blowing gas and its ore enter the cylinder cover 330 from top to bottom through the air inlet 311a of the upper chamber 313 of the pressure reducing box. Refer to Figure 2 , Figure 3 Direction V in ;

[0033] In the cylinder cover 330, the gas and the mineral material are diverted and diluted into the upper chamber 313 through multiple primary release ports 331 on the side wall of the cylinder cover 330, see Figure 2 , Figure 3 Direction V1, the back-blowing gas is diverted and diffused and weakened, and a pressure relief space is defined between the outer wall of the cylinder cover 330 and the inner wall of the upper chamber 313, which is convenient for the back-blowing gas and its ore to be initially diverted, diluted, weakened, depressurized and decelerated, wherein the direction of the back-blowing gas is changed from longitudinal to transverse;

[0034] The initially weakened back-blowing gas and its mineral materials are released into the lower chamber 314 of the pressure reducing box after passing through the filter plate 320. Figure 2 , Figure 3 Direction V2, the back-blowing gas is secondary diverted and diffused and weakened, and secondary dilution and weakening;

[0035] The secondary weakened back-blowing gas and its ore are diluted into the collection pool 400 (equivalent to the atmosphere) through the third-level release port 312a of the lower chamber 314 of the decompression box, see Figure 2 , Figure 3 Direction V3, back-blowing is three-time dispersed and weakened, in which the back-blowing direction is changed from longitudinal to transverse.

[0036] Reference Figures 2 to 4 The air inlet 311a is connected to the back-blowing gas discharge pipe 200, and the diameter of the air inlet 311a is slightly smaller than the diameter of the back-blowing gas discharge pipe 200, or larger than the diameter of the back-blowing gas discharge pipe 200; the cylinder cover 330 covers the air inlet 311a, and the passage of the cylinder cover 330 is larger than the diameter of the back-blowing gas discharge pipe 200. The diameter of the back-blowing gas discharge pipe 200 is generally 40-110mm, the first-level release port 331 is 30-80mm, the second-level release port 321 (i.e., the mesh of the filter plate 320) is 15-40mm, and the third-level release port 312a is 40-80mm.

[0037] Compared with the prior art, the beneficial effects of the present application include: there are multi-stage diversion, dilution, pressure reduction and speed reduction between the back-blowing gas discharge pipe 200 (0.7Mpa) and the atmosphere (0.1Mpa); the high-pressure and high-speed back-blowing gas is not directly and quickly sprayed into the atmosphere, but is diluted and weakened through multi-stage diversion and the airflow direction is modified before being diluted into the atmosphere, thereby avoiding the occurrence of high velocity difference boundaries and high velocity difference vortices of the fluid, avoiding flutter noise of the back-blowing gas and its ore, avoiding direct injection of high-pressure and high-speed back-blowing gas into the collection pool 400, avoiding splashing of ore in the collection pool 400, and ensuring workshop hygiene.

[0038] Reference Figures 1 to 4 A docking nozzle 311 c is protrudingly provided on the top of the box body 310 , and the docking nozzle 311 c is suitable for threaded connection with the outlet end of the back-blowing gas exhaust pipe 200 .

[0039] Reference Figures 1 to 4, in some embodiments of the present utility model, the box body 310 includes an upper box shell 311 and a lower box shell 312, and the upper box shell 311 and the lower box shell 312 are detachably connected to jointly clamp the filter plate 320, such as snap connection, screw connection, and threaded connection between cylinders. The disassembly and assembly of the upper box shell 311 and the lower box shell 312 can complete the disassembly and assembly of the pressure reduction box, which is convenient for disassembly and assembly and easy to maintain and clean.

[0040] In some designs, the cylinder cover 330 is integrally formed with the upper box shell 311, such as integral forging / casting, 3D printing, and welding into one body. Refer to Figures 2 to 4 , preferably, a flange 311b is provided on the inner top of the upper chamber 313, and the flange 311b surrounds the air inlet 311a and is adapted to be threadedly connected to the cylinder cover 330. The cylinder cover 330 receives the first-stage spraying erosion of the reverse blowing gas and its ore, and the relatively easily worn cylinder cover 330 is easy to replace, avoiding the high cost of replacing the entire pressure reduction box.

[0041] Refer to Figures 2 to 4 , in some embodiments of the present utility model, a plurality of groups of first-stage release ports 331 are arranged at intervals in the up-and-down direction on the cylinder cover 330, and two adjacent groups of first-stage release ports 331 are staggeredly distributed.

[0042] In some embodiments of the present utility model, air-receiving shock-absorbing cotton facing the first-stage release port 331 is provided on the inner wall of the upper chamber 313, which is adapted to the jet landing of the first-stage release port 331 (i.e., is adapted to be directly blown by the jet of the first-stage release port 331). The air-receiving shock-absorbing cotton presents another level of reverse blowing gas deceleration and avoids the erosion of the inner wall of the upper chamber 313 by the reverse blowing gas and its ore, extending the service life of the pressure reduction box.

[0043] In some embodiments of the present utility model, a plurality of groups of slots corresponding to the air-receiving shock-absorbing cotton are provided on the inner wall of the upper chamber 313, and each group of slots is adapted to limit the two ends of the air-receiving shock-absorbing cotton, so that the air-receiving shock-absorbing cotton is adapted to be inserted into or detached from the slots in the up-and-down direction, and the upper box shell 311 presses the filter plate 320 through the air-receiving shock-absorbing cotton. In the present utility model, the disassembly, assembly, and cleaning of the air-receiving shock-absorbing cotton are relatively convenient, and this design synchronously solves the possible vibration of the filter plate 320.

[0044] Refer to Figures 2 to 4 , preferably, the second-stage release port 321 includes an inverted cone hole and a straight hole connected to the lower end of the inverted cone hole, and the second-stage release ports 321 of the filter plate 320 array are crowded together. Based on the crowding together of the second-stage release ports 321 and the second-stage release ports 321 being funnel-shaped, less ore mud remains on the filter plate 320. In addition, based on the disturbance of the reverse blowing gas, even less ore mud remains on the filter plate 320. It can be understood that the crowding together of the second-stage release ports 321 is based on its large end (i.e., the upper end of the second-stage release port 321 is used as the benchmark for crowding together); the actual aperture of the second-stage release port 321 is based on the diameter of the straight hole.

[0045] In some embodiments of the present utility model, the box body 310 is made of Q235 steel. The box body 310 is made of carbon structural steel, which is not easily corroded and wear-resistant.

[0046] The above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit it. Any modification or equivalent replacement that does not depart from the spirit and scope of the present utility model shall be covered by the technical solutions of the present utility model.

Claims

1. A backwashing decompression box for a filter press, characterized in that, Comprising: A box body; A filter plate, disposed within the box body, dividing the chamber of the box body into an upper chamber and a lower chamber. An air inlet is provided at the top of the upper chamber, and the upper end of the air inlet is adapted to be docked with the outlet end of the reverse blowing discharge pipe; A cylinder cover, accommodated within the upper chamber and covering the lower end of the air inlet. A plurality of first-stage release ports communicating with the upper chamber are provided on the side wall of the cylinder cover; Wherein, the mesh holes of the filter plate serve as second-stage release ports, and a plurality of third-stage release ports are provided on the peripheral wall of the lower chamber.

2. The filter press back-blowing decompression tank according to claim 1, characterized in that The box body includes an upper box shell and a lower box shell, and the upper box shell and the lower box shell are detachably connected to jointly clamp the filter plate.

3. The blowback pressure reducing tank of the filter press according to claim 2, characterized in that, A flange is provided on the inner top of the upper chamber, surrounding the air inlet and adapted to be threadedly connected to the cylinder cover.

4. The blowback pressure reducing tank of the filter press according to claim 2, characterized in that, Air impact damping cotton facing the first-stage release ports is provided on the inner wall of the upper chamber.

5. The blowback pressure reducing tank of the filter press according to claim 4, characterized in that, A plurality of groups of slots corresponding to the air impact damping cotton one by one are provided on the inner wall of the upper chamber. Each group of slots is adapted to define the two ends of the air impact damping cotton. The air impact damping cotton is adapted to be inserted into or removed from the slots in the vertical direction, and the upper box shell presses the filter plate through the air impact damping cotton.

6. The blowback pressure reduction tank of the filter press according to any one of claims 1 to 5, characterized in that, A plurality of groups of the first-stage release ports are provided on the cylinder cover at intervals in the vertical direction, and adjacent two groups of the first-stage release ports are distributed in a staggered manner.

7. The blowback pressure relief box of the filter press according to any one of claims 1 to 5, characterized in that The second-stage release port includes an inverted conical hole and a straight hole docking the lower end of the inverted conical hole, and the second-stage release ports of the filter plate array are in close contact with each other.

8. The blowback pressure relief tank of the filter press according to any one of claims 1 to 5, characterized in that A docking nozzle protrudes from the top of the box body, and the docking nozzle is adapted to be threadedly connected to the outlet end of the reverse blowing discharge pipe.

9. The filter press backwashing decompression tank according to any one of claims 1 to 5, characterized in that, The box body is made of Q235 steel.

Images