Multi-section extrusion type ultrahigh pressure filter press

Abstract

A multi-section extrusion type ultrahigh pressure filter press comprises a rack, and a hydraulic cylinder assembly is arranged at one end of the rack; the hydraulic cylinder assembly is in power connection with the filter pressing unit, the filter pressing unit comprises a plurality of filter plates, and the plurality of filter plates are arranged at intervals; a feeding flange is arranged on the filter plate; diaphragms are oppositely arranged between the filter plates, the diaphragms are communicated with the high-pressure medium conveying pipe cavity, and elastic sealing pieces are arranged between the filter plates; and the feeding flange is connected with a feeding pipe assembly. The problem that the service life of a diaphragm of a filter press in the prior art is generally short is solved, and a new filter pressing stroke is provided for compression between the filter plates through the elastic sealing gaskets; under the condition, the expansion volume of the diaphragm is smaller, correspondingly, the service life of the diaphragm is longer, and the operation of the filter press is safer.

Description

Technical Field

[0001] The present invention relates to the field of filter presses, and particularly to a multi-stage extrusion type ultra-high pressure filter press. Background Art

[0002] At present, ultra-high pressure filter presses on the market are commonly used in the solid-liquid separation process of coal slime in coal mines, municipal sewage, etc. However, the diaphragm filter presses in the prior art generally have the problems of low pressure resistance, relatively high moisture content in the coal cake after pressure filtration, and the need for sun drying or heating to remove moisture, resulting in low pressure filtration efficiency.

[0003] Based on the above, in order to obtain a coal cake with a lower moisture content, the diaphragm needs to expand as much as possible, resulting in an extremely high internal pressure in the diaphragm. In this case, the diaphragm is often damaged due to excessive pressure, resulting in low economic benefits and potential safety hazards during operation. In particular, due to the inconvenience of diaphragm replacement, it also leads to high maintenance pressure and high labor intensity of operators, affecting production efficiency. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a multi-stage extrusion type ultra-high pressure filter press with reasonable configuration, especially a more ingenious configuration form of the pressure filtration unit, small expansion of the diaphragm part, better pressure filtration effect, and safer operation.

[0005] The device includes a frame, and the frame is the assembly basis of the device; A hydraulic cylinder assembly is arranged at one end of the frame; The hydraulic cylinder assembly is power-connected to a pressure filtration unit, and the pressure filtration unit includes filter plates. There are multiple filter plates, and the multiple filter plates are arranged at intervals; A feed flange is arranged on the filter plate; Diaphragms are oppositely arranged between the filter plates, and the diaphragms are communicated with the high-pressure medium conveying pipe chamber; the so-called opposite arrangement means that diaphragms are respectively arranged on the opposite sides of the filter plates; Preferably, the diaphragm is encapsulated by a diaphragm pressing plate; Elastic seals are arranged between the filter plates; The feed flange on the end filter plate of the pressure filtration unit is connected to a feed pipe assembly.

[0006] The achieved effect is that based on the arrangement of the elastic seals, the expansion volume of the diaphragm in the pressure filtration unit can be smaller, that is, through the elastic compression of the elastic seals, a new stroke is provided for the approach between the pressure filtration plates, thereby achieving the effects of longer service life of the diaphragm and safer implementation.

[0007] The beneficial effects of the present invention are as follows: The present invention solves the problem of low service life of diaphragms commonly existing in the prior art for filter presses, and provides a new filtering stroke for the compression between filter plates through elastic gaskets; in this case, the expansion volume of the diaphragm is smaller, correspondingly, the service life of the diaphragm is longer, and the operation of the filter press is safer. Description of the Drawings

[0008] Figure 1 is a schematic structural view of a multi-stage extrusion type ultra-high pressure filter press according to the present invention; Figure 2 is a schematic structural view of a filtering unit in a multi-stage extrusion type ultra-high pressure filter press according to the present invention; Figure 3 is based on Figure 2 a side view in the Reference Signs: 1, wing plate of the main beam; 2, hydraulic cylinder seat; 3, hydraulic cylinder assembly; 4, top plate; 5, head filter plate; 6, intermediate filter plate; 7, diaphragm; 8, elastic seal; 9, tail filter plate; 10, limit thrust seat; 11, feed pipe assembly; 12, draw plate trolley; 13, water collecting plate; 14, air back-blowing material assembly; 15, hydraulic station; 501, left support; 502, filter plate boss; 503, diaphragm pressing plate; 504, feed flange; 505, right support; 506, one-way valve; The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the drawings. Detailed Embodiments

[0009] Referring to Figure 1 and Figure 2 , a multi-stage extrusion type ultra-high pressure filter press according to the present invention includes a frame, and the frame is the assembly basis of the equipment; A hydraulic cylinder assembly 3 is provided at one end of the frame; The hydraulic cylinder assembly 3 is power-connected to a filtering unit, and the filtering unit includes filter plates. There are multiple filter plates, and the multiple filter plates are arranged at intervals; A feed flange 504 is provided on the filter plate; Diaphragms 7 are oppositely arranged between the filter plates, and the diaphragms 7 are communicated with the high-pressure medium conveying pipe chamber; the so-called opposite arrangement means that diaphragms 7 are respectively provided on the opposite sides of the filter plates; Preferably, the diaphragm 7 is encapsulated by a diaphragm pressing plate 503; Elastic seals 8 are provided between the filter plates; The feed flange 504 on the end filter plate of the filtering unit is connected to the feed pipe assembly 11; A water collecting plate 13 is also provided at the lower part of the frame.

[0010] The effect achieved thereby is that, due to the provision of the elastic seal 8, the expansion volume of the diaphragm 7 in the filter pressing unit can be smaller. That is, through the elastic compression of the elastic seal 8, a new stroke is provided for the approach between the filter plates, thereby achieving the effects of longer service life of the diaphragm 7 and more secure implementation.

[0011] Embodiment 1: The filter plate includes a head filter plate 5, an intermediate filter plate 6, and a tail filter plate 9; a top plate 4 is encapsulated on the back of the head filter plate 5; The top plate 4 is power-connected to the hydraulic cylinder assembly 3, and the head filter plate 5, the intermediate filter plate 6, and the tail filter plate 9 are sequentially arranged behind it; Relatively arranged grooves are provided on the filter plate, and the elastic seal 8 is arranged in the grooves.

[0012] The relatively arranged here means that corresponding grooves are respectively provided on the opposite surfaces of the sequentially arranged head filter plate 5, middle filter plate, and tail filter plate 9.

[0013] Further, the grooves are continuous grooves provided at the near-edge position of the filter plate.

[0014] That is to say, the grooves are continuous groove bodies that are nearly annular or nearly rectangular based on the shape of the filter plate, and their installation positions are close to the edge of the filter plate, thereby obtaining a filter chamber with a larger volume.

[0015] Preferably, the elastic seal 8 is encapsulated in the groove by bolts. And the effect of reliable assembly of the elastic seal 8 is achieved thereby.

[0016] Further, the feed flange 504 is centrally arranged on the filter plate, and is evenly arrayed around the feed flange 504. Relatively arranged filter plate bosses 502 are provided on the filter plate; The effect achieved thereby is to ensure stable support of the filter chamber.

[0017] Embodiment 2: The feed pipe assembly 11 is arranged at one end of the frame, and an air back-blowing material assembly 14 is also arranged at the other end of the frame. The feed pipe assembly 11 and the air back-blowing material assembly 14 are respectively connected to the filter pressing unit through pipelines.

[0018] Further, the feed pipe assembly 11 is connected to the feed flange 504 of the tail filter plate 9 through a pipeline. An air back-blowing material inlet pipe is arranged in the top plate 4, and the air back-blowing material inlet pipe is connected to the feed flange 504 of the head filter plate 5 through a pipeline. A one-way valve 506 is also arranged at the end of the air back-blowing material inlet pipe.

[0019] The effect achieved thereby is to optimize the assembly structure. The equipment has end feeding, and after the pressure filtration is completed, the air reverse blowing material assembly 14 blows the material reversely, causing it to fall back into the material bin.

[0020] Embodiment 3: At one end of the frame, there are relatively arranged large beam plate wing plates 1. Between the two large beam plate wing plates 1, there are a hydraulic cylinder seat 2 and a hydraulic station 15; The hydraulic cylinder assembly 3 is arranged on the hydraulic cylinder seat 2. The hydraulic station 15 is power-connected to the hydraulic cylinder assembly 3, and the hydraulic cylinder assembly 3 is power-connected to the top plate 4; At the other end of the frame, there is a limit thrust seat 10.

[0021] The effect achieved thereby is to restrict the stroke of the pressure filtration unit.

[0022] Embodiment 4: A plurality of pull plate trolleys 12 are respectively slidably arranged on both sides of the frame; on both sides of the partition plate, there are a left support 501 and a right support 505 respectively. The partition plate is slidably arranged on the large beam plate through the left support 501 and the right support 505.

[0023] When the present invention is in use, the hydraulic cylinder assembly 3 acts, and the pressure filtration unit acts from the head end to the tail end of the machine, the filter chamber is fed with material, and primary pressure filtration is carried out; The diaphragm 7 is pumped with high-pressure medium through the high-pressure medium delivery pipe, and the diaphragm 7 bulges for secondary pressure filtration; The hydraulic cylinder assembly 3 acts, and the extrusion assembly acts secondarily from the head end to the tail end of the machine. That is, based on the elastic seal 8 being arranged between the filter plates, the elastic seal 8 is deformed under pressure, providing a new stroke for the secondary action of the filter plates, and tertiary pressure filtration is carried out.

[0024] That is to say, due to the arrangement of the elastic seal 8, the expansion volume of the diaphragm 7 in the extrusion assembly can be smaller. That is, through the elastic compression of the elastic seal 8, a new stroke is provided for the approach between the pressure filtration plates, thereby achieving the effects of longer service life of the diaphragm 7 and more secure implementation.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims.

[0026] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-stage extrusion type ultra-high pressure filter press, comprising a frame, a hydraulic cylinder assembly is arranged at one end of the frame; the hydraulic cylinder assembly is dynamically connected to a filter press unit, the filter press unit comprises filter plates, the filter plates are multiple, and the filter plates are arranged at intervals; feed flanges are arranged on the filter plates; diaphragms are arranged opposite to each other between the filter plates, and the diaphragms are connected to a high-pressure medium delivery pipe chamber, characterized in that: An elastic sealing member is provided between the filter plates; The feed flange on the filter plate at the end of the filter press unit is connected to the feed pipe assembly.

2. A multi-stage extrusion type ultra-high pressure filter press according to claim 1, characterized in that: The filter plate includes a head filter plate, a middle filter plate and a tail filter plate; a top plate is packaged on the back of the head filter plate; The top plate is connected to the hydraulic cylinder assembly, and a head filter plate, a middle filter plate and a tail filter plate are sequentially arranged behind the top plate; The filter plate is provided with grooves opposite to each other, and the elastic sealing member is arranged in the grooves.

3. A multi-stage extrusion type ultra-high pressure filter press according to claim 2, characterized in that: The grooves are continuous grooves arranged near the edge of the filter plate.

4. The multi-stage extrusion type ultra-high pressure filter press according to claim 1, characterized in that: The feed flange is centrally arranged on the filter plate, and a uniform array is formed around the feed flange, and filter plate bosses are arranged opposite to each other on the filter plate.

5. The multi-stage extrusion type ultra-high pressure filter press according to claim 1, characterized in that: The feed pipe assembly is arranged at one end of the frame, and an air back-blowing assembly is also arranged at the other end of the frame. The feed pipe assembly and the air back-blowing assembly are respectively connected to the filter press unit pipeline.

6. The multi-stage extrusion type ultra-high pressure filter press according to claim 1, characterized in that: The feed pipe assembly is connected to the feed flange pipe of the tail filter plate through a pipe, a backflush air inlet pipe is arranged in the top plate, and the backflush air inlet pipe is connected to the feed flange pipe of the head filter plate, and a one-way valve is arranged at the end of the backflush air inlet pipe.

7. The multi-stage extrusion type ultra-high pressure filter press according to claim 1, characterized in that: One end of the frame is provided with a large beam plate wing plate arranged opposite to each other, and a hydraulic cylinder seat and a hydraulic station are arranged between the two large beam plate wing plates; The hydraulic cylinder assembly is arranged on the hydraulic cylinder seat, the hydraulic station is connected to the hydraulic cylinder assembly by power, and the hydraulic cylinder assembly is connected to the top plate by power; A limited thrust seat is arranged at the other end of the frame.

8. The multi-stage extrusion type ultra-high pressure filter press according to claim 1, characterized in that: A plurality of plate-pulling trolleys are slidably arranged on both sides of the frame; a left support and a right support are respectively arranged on both sides of the partition, and the partition is slidably arranged on the beam plate through the left support and the right support.

9. The multi-stage extrusion type ultra-high pressure filter press according to claim 1, characterized in that: A water collecting plate is also arranged at the lower part of the frame.

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