CN221061859U - Composite plate frame type filter press - Google Patents
Composite plate frame type filter press Download PDFInfo
- Publication number
- CN221061859U CN221061859U CN202322396005.8U CN202322396005U CN221061859U CN 221061859 U CN221061859 U CN 221061859U CN 202322396005 U CN202322396005 U CN 202322396005U CN 221061859 U CN221061859 U CN 221061859U
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- filter
- fixedly connected
- filter pressing
- plate
- frame
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- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 238000005192 partition Methods 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims description 24
- 230000000903 blocking effect Effects 0.000 claims description 23
- 239000004744 fabric Substances 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 abstract description 23
- 238000001914 filtration Methods 0.000 abstract description 9
- 239000007787 solid Substances 0.000 description 6
- 239000011344 liquid material Substances 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011085 pressure filtration Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model discloses a composite plate frame type filter press, and relates to the field of filter presses. The utility model provides a composite sheet frame filter press, includes the filter-pressing case, the fixed intercommunication of filter-pressing case lateral wall has notes liquid pipe, the fixed intercommunication of bottom has the flowing back shell, still includes: the filter press comprises a first partition plate and a second partition plate which are fixedly connected in the filter press box, wherein a filter press cavity is arranged between the first partition plate and the second partition plate, a filter press component is arranged in the filter press cavity, a liquid leakage hole is formed in the first partition plate, and a liquid drainage hole is formed in the second partition plate; the pressing plate is connected in the filter pressing box in a sliding manner and is positioned above the first partition plate; the first spring is fixedly connected between the inner wall of the top of the filter pressing box and the pressing plate; according to the utility model, when the catalyst is filtered, the inside of the filter pressing box is always in a pressurized state on the pressing plate, so that the pressing plate can always press the catalyst in the filter pressing box, and the filtering efficiency of the catalyst is improved.
Description
Technical Field
The utility model belongs to the technical field of filter presses, and particularly relates to a composite plate frame filter press.
Background
In the production of fine chemical workshops, filtration is an indispensable unit operation, namely, the operation of utilizing a porous medium to intercept solid particles in suspension liquid and enable the liquid to pass freely so as to realize solid-liquid separation; for large amounts of solids or tacky solids, plate and frame press filtration is typically used to achieve rapid separation of the solid-liquid mixture in the reaction solution. At present, after the production of the enlarged project is completed, the catalyst needs to be quickly separated by adopting a filter press.
The patent application number is 201410794391.9, the invention patent of the name plate-and-frame filter press, disclose a plate-and-frame filter press, including the chassis, there are feed hoppers and pressure pipes on the top of the chassis, there are pistons in the pressure pipe; a guide plate is arranged in the shell, a group of through grooves are formed in the guide plate, and the through grooves are parallel to each other; the lower ends of the guide plates are positioned at the positions of each through groove and are respectively provided with a group of filter pressing frames, each filter pressing frame comprises a bottom plate and two side plates, each side plate is square and annular, each side plate is positioned at two sides of each through groove, the bottom ends of the two side plates are connected with the bottom plate, the end faces of the two sides of each side plate are propped against the side wall of the shell, the outer sides of the two side plates are respectively provided with a filter pressing plate, the filter pressing plates are in contact with the side plates, and a first filter cloth is arranged between each filter pressing plate and each side plate; still be equipped with the backup pad in the casing, be equipped with a plurality of water conservancy diversion holes in the backup pad, the backup pad is located pressure filter frame below, and backup pad and pressure filter frame, backup pad and filter-pressing board all offset. The invention overcomes the technical defect of low filtering efficiency of the existing filter and provides a plate-and-frame filter press with high filtering efficiency;
however, the above patent has a problem that the piston is capable of pressing the liquid material in the housing while moving up and down in the pressure pipe, but the distance of movement of the piston in the pressure pipe is constant, the liquid material in the housing is continuously reduced, and the space capable of storing gas in the housing is increased along with the reduction of the liquid material, so that when the material in the housing is small, the air pressure in the housing may be insufficient to press the liquid material in the housing when the piston moves in the pressure pipe, thereby reducing the filtering efficiency of the liquid material.
Disclosure of utility model
The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a composite plate frame filter press which can overcome the problems or at least partially solve the problems.
In order to solve the technical problems, the utility model adopts the basic conception of the technical scheme that:
The utility model provides a composite sheet frame filter press, includes the filter-pressing case, the fixed intercommunication of filter-pressing case lateral wall has notes liquid pipe, the fixed intercommunication of bottom has the flowing back shell, still includes: the filter press comprises a first partition plate and a second partition plate which are fixedly connected in the filter press box, wherein a filter press cavity is arranged between the first partition plate and the second partition plate, a filter press component is arranged in the filter press cavity, a liquid leakage hole is formed in the first partition plate, and a liquid drainage hole is formed in the second partition plate; the pressing plate is connected in the filter pressing box in a sliding manner and is positioned above the first partition plate; the first spring is fixedly connected between the inner wall of the top of the filter pressing box and the pressing plate; the sleeve is fixedly communicated with the inner cavity of the filter pressing box, connecting blocks are symmetrically and fixedly connected in the sleeve, guide rods are fixedly connected to the connecting blocks, limiting rings are fixedly connected to the guide rods, blocking blocks are connected to the guide rods in a sliding mode, exhaust holes are formed in the blocking blocks, the blocking blocks are attached to the inner wall of the sleeve, and springs II are fixedly connected between the blocking blocks and the connecting blocks; the suction pump is fixedly arranged on the filter pressing box, and the output end of the suction pump is fixedly communicated with the inner cavity of the sleeve; the exhaust groove is formed on the side wall of the filter pressing box and corresponds to the sleeve; the connecting rod is fixedly connected to the blocking block, and one end, away from the blocking block, of the connecting rod is fixedly connected with a sealing cover.
Preferably, the filter pressing assembly comprises a frame body, a filter pressing plate and filter cloth, wherein a plurality of groups of filter pressing plates and filter cloth are arranged on the frame body, the frame bodies are transversely arranged in the filter pressing cavity at equal intervals, the filter pressing plates are fixedly connected with the frame bodies, a plurality of groups of grooves are formed in the filter pressing plates, the filter cloth is fixedly connected to one side of the filter pressing plates, a filter pressing frame is formed between two adjacent groups of frame bodies, and the liquid leakage holes correspond to the filter pressing frame.
In order to be convenient for clear up the impurity of jam in the filter-pressing intracavity, further, still include the mounting panel, and fixed connection is in handle on the mounting panel, the mounting panel passes through fixing bolt and filter-pressing case dismantles to be connected, framework and mounting panel fixed connection.
In order to play a limiting and guiding role on the frame body, further, clamping blocks are fixedly connected to the lower side of the first partition plate and the upper side of the second partition plate, clamping grooves are formed in the upper end and the lower end of the frame body, and the clamping blocks are slidably connected in the clamping grooves.
In order to improve the tightness of the joint surface of the sealing cover and the exhaust groove, preferably, the sealing cover is fixedly connected with a sealing plug, and the sealing plug is inserted into the exhaust groove.
In order to adjust the level of the filter pressing case, preferably, the filter pressing case bottom fixedly connected with barrel, barrel internal thread connection has the lead screw, the one end fixedly connected with base that the barrel was kept away from to the lead screw, lead screw outer wall fixedly connected with handle.
In order to play the effect of spacing direction to the pressure board, preferably, fixedly connected with guide bar on the pressure board, the one end fixedly connected with stopper at pressure filtration case top is run through to the guide bar, guide bar and pressure filtration case sliding connection.
After the technical scheme is adopted, compared with the prior art, the utility model has the following beneficial effects:
According to the utility model, when the catalyst is filtered, the inside of the filter pressing box is always in a pressurized state on the pressing plate, so that the pressing plate can always press the catalyst in the filter pressing box, and the filtering efficiency of the catalyst is improved.
Drawings
In the drawings:
FIG. 1 is a cross-sectional view of a press box of a composite plate and frame filter press of the present utility model;
FIG. 2 is a second cross-sectional view of the press box of the composite plate frame press filter of the present utility model;
FIG. 3 is a cross-sectional view of a press box of the composite plate and frame filter press of the present utility model;
FIG. 4 is a schematic view of a part of the structure of the composite plate frame filter press of the present utility model;
FIG. 5 is a schematic view of the structure of the composite plate and frame filter press of the present utility model;
fig. 6 is an enlarged view of section a of fig. 1 of the composite plate and frame filter press of the present utility model.
In the figure: 1. a filter pressing box; 101. a liquid injection pipe; 102. a liquid discharge shell; 2. a cylinder; 201. a screw rod; 202. a base; 203. a handle; 3. a first partition board; 301. a second partition board; 302. a weeping hole; 303. a liquid discharge hole; 304. a clamping block; 305. a mounting plate; 306. a frame; 307. a clamping groove; 308. a filter pressing plate; 309. a filter cloth; 310. a fixing bolt; 311. a handle; 4. pressing the plate; 401. a first spring; 402. a guide rod; 403. a limiting block; 5. a getter pump; 501. a sleeve; 502. a connecting block; 503. a guide rod; 504. a limiting ring; 505. a second spring; 506. a barrier block; 507. an exhaust hole; 508. a connecting rod; 509. an exhaust groove; 510. sealing cover; 511. and (5) sealing plugs.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.
Example 1:
Referring to fig. 1-6, the composite plate frame filter press comprises a filter pressing case 1, wherein a liquid injection pipe 101 is fixedly communicated with the side wall of the filter pressing case 1, a liquid discharge shell 102 is fixedly communicated with the bottom, and the composite plate frame filter press further comprises: the filter press comprises a first partition plate 3 and a second partition plate 301 which are fixedly connected in a filter press box 1, wherein a filter press cavity is arranged between the first partition plate 3 and the second partition plate 301, a filter press component is arranged in the filter press cavity, a liquid leakage hole 302 is formed in the first partition plate 3, and a liquid leakage hole 303 is formed in the second partition plate 301; the pressing plate 4 is connected in the filter pressing box 1 in a sliding manner and is positioned above the first partition plate 3; the first spring 401 is fixedly connected between the inner wall of the top of the filter pressing box 1 and the pressing plate 4; the sleeve 501 is fixedly communicated with the inner cavity of the filter pressing box 1, wherein a connecting block 502 is symmetrically and fixedly connected in the sleeve 501, a guide rod 503 is fixedly connected to the connecting block 502, a limiting ring 504 is fixedly connected to the guide rod 503, a blocking block 506 is slidably connected to the guide rod 503, an exhaust hole 507 is formed in the blocking block 506, the blocking block 506 is attached to the inner wall of the sleeve 501, and a second spring 505 is fixedly connected between the blocking block 506 and the connecting block 502; the suction pump 5 is fixedly arranged on the filter pressing box 1, and the output end of the suction pump 5 is fixedly communicated with the inner cavity of the sleeve 501; an exhaust groove 509 which is arranged on the side wall of the filter pressing box 1 and corresponds to the sleeve 501; the connecting rod 508 is fixedly connected to the blocking block 506, and one end of the connecting rod 508, which is far away from the blocking block 506, is fixedly connected with the sealing cover 510.
The filter pressing subassembly includes framework 306, filter pressing board 308, filter cloth 309, and framework 306 is provided with the multiunit, and multiunit framework 306 transversely equidistantly arranges in the filter pressing intracavity, fixedly connected with filter pressing board 308 on the framework 306, has seted up multiunit slot on the filter pressing board 308, and filter cloth 309 fixed connection is on one side of filter pressing board 308, forms the filter pressing frame between two adjacent sets of frameworks 306, and weeping hole 302 corresponds with the filter pressing frame.
When the filter press box is used, an operator firstly fills the catalyst into the filter press box 1 through the liquid filling pipe 101, then starts the suction pump 5, then the catalyst flows into each filter press frame through the liquid leakage holes 302 under the action of weight, at the moment, the catalyst sequentially contacts with the filter press plates 308 and the filter cloth 309, so that the liquid phase in the catalyst firstly passes through the filter press plates 308 through the grooves, then passes through the filter cloth 309, the solid phase in the catalyst is trapped in the filter press frames to realize solid-liquid separation, the filtered catalyst flows into the bottom of the filter press box 1 through the liquid leakage holes 303 on the second partition plate 301 and is discharged through the liquid leakage shell 102 at the bottom of the filter press box 1, and the inner wall at the bottom of the filter press box 1 is obliquely arranged towards the liquid leakage shell 102, so that the filtered catalyst can be guided to the liquid leakage shell 102, and the liquid leakage efficiency of the catalyst is accelerated.
When the catalyst is filled into the filter pressing box 1, the suction pump 5 is started, the suction pump 5 sucks external air to enter the filter pressing box 1 through the sleeve 501 and the exhaust holes 507 on the blocking block 506 in sequence, the output end of the suction pump 5 is provided with the one-way valve, the pressure intensity of the pressure plate 4 positioned above the filter pressing box 1 is increased, at the moment, the air pressurized into the filter pressing box 1 pushes the pressure plate 4 to move downwards, the pressure plate 4 presses the catalyst in the filter pressing box 1, the first spring 401 is stretched, the pressed catalyst rapidly flows into each filter pressing frame through the liquid leakage holes 302, the filtering efficiency of the filter plates 308 and the filter cloth 309 on the catalyst can be quickened, meanwhile, when the air passes through the sleeve 501, the air pushes the blocking block 506 to move to the side close to the connecting block 502 on the guide rod 503, the second spring 505 is compressed, the blocking block 506 drives the sealing cover 510 to move to the side close to the exhaust groove 509, the sealing cover the exhaust groove 509, and the sealing effect is further achieved on the exhaust groove 509, and the pressure plate 1 is ensured to be positioned in the filter pressing box 4, and the pressure plate 4 is always pressed into the filter pressing box 4, and the catalyst can be pressed.
When the catalyst is stopped to be filtered, the suction pump 5 is turned off, the compressed spring II 505 generates thrust, the blocking block 506 is pushed to move to one side, close to the limiting ring 504, on the guide rod 503, simultaneously the blocking block 506 drives the sealing cover 510 to synchronously move through the connecting rod 508, so that the sealing cover 510 is far away from the exhaust groove 509, and then the exhaust groove 509 is opened, at the moment, the gas above the pressing plate 4 in the filter pressing case 1 is discharged through the exhaust groove 509, and the stretched spring I401 resets under the self elastic retractive force and pulls the pressing plate 4 to move upwards for resetting, so that the pressurizing of the catalyst in the filter pressing case 1 is stopped.
Example 2:
Referring to fig. 1, 3 and 4, the composite plate frame filter press is basically the same as that of embodiment 1, further comprises a mounting plate 305, and a handle 311 fixedly connected to the mounting plate 305, wherein the mounting plate 305 is detachably connected to the filter pressing case 1 through a fixing bolt 310, and the frame 306 is fixedly connected to the mounting plate 305; when the solid particulate matter impurity blocked in the filter pressing frame needs to be cleaned, an operator can unscrew the fixing bolt 310 used for fixedly connecting the mounting plate 305 and the filter pressing box 1 by means of a wrench, then the operator can move the frame 306 out of the filter pressing cavity through the handle 311, and then the operator can clean the solid particulate matter impurity which is adsorbed on the filter pressing plate 308 and the filter cloth 309 conveniently and can clean the solid particulate matter impurity blocked in the filter pressing frame.
The lower side of the first partition board 3 and the upper side of the second partition board 301 are fixedly connected with clamping blocks 304, clamping grooves 307 are formed in the upper end and the lower end of the frame 306, and the clamping blocks 304 are slidably connected in the clamping grooves 307; the clamping block 304 slides in the clamping groove 307, so that limit fixation can be provided for the frame 306, the stability of the frame 306 in the filter pressing cavity is ensured, and the frame 306 is prevented from displacement in the filter pressing cavity when the pressure is increased in the filter pressing box 1, so that the filtering effect on the catalyst is influenced.
Example 3:
Referring to fig. 1 and 2, the composite plate frame filter press is basically the same as that of embodiment 1, and further, a sealing plug 511 is fixedly connected to the sealing cover 510, and the sealing plug 511 is inserted into the exhaust groove 509; when the suction pump 5 pressurizes the inside of the filter pressing case 1, the suction pump is inserted into the exhaust groove 509 through the sealing plug 511, so that the sealing performance of the sealing cover 510 for sealing the exhaust groove 509 can be improved, and the gas pressurized into the inside of the filter pressing case 1 is prevented from leaking.
Example 4:
Referring to fig. 1 and 5, the composite plate frame filter press is basically the same as that of the embodiment 1, further, the bottom of the filter pressing box 1 is fixedly connected with a cylinder 2, the inner thread of the cylinder 2 is connected with a screw rod 201, one end of the screw rod 201 far away from the cylinder 2 is fixedly connected with a base 202, and the outer wall of the screw rod 201 is fixedly connected with a handle 203; if the filter pressing case 1 is placed on uneven ground, an operator can rotate the screw rod 201 through the handle 203, the screw rod 201 is in threaded connection with the cylinder 2, so that the screw rod 201 can retract inwards or extend outwards of the cylinder 2, and meanwhile, the screw rod 201 drives the base 202 to synchronously move, and then the base 202 can be adjusted to be closely attached to the ground, so that the overall stability of the filter pressing case 1 is improved.
Example 5:
Referring to fig. 1 and 2, the composite plate frame filter press is basically the same as that of embodiment 1, and further, a guide rod 402 is fixedly connected to the pressing plate 4, a limiting block 403 is fixedly connected to one end of the guide rod 402 penetrating through the top of the filter pressing box 1, and the guide rod 402 is slidably connected with the filter pressing box 1; the guide rod 402 slides on the filter pressing box 1, so that the pressing plate 4 can play a role in limiting and guiding the pressing plate 4 when moving up and down in the filter pressing box 1, and the stability of the pressing plate 4 during moving up and down is ensured.
The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the present utility model in any way, although the present utility model has been described in the preferred embodiments, and is not limited thereto.
Claims (7)
1. The composite board frame type filter press comprises a filter pressing box (1), wherein a liquid injection pipe (101) is fixedly communicated with the side wall of the filter pressing box (1), a liquid discharge shell (102) is fixedly communicated with the bottom of the filter pressing box, and the composite board frame type filter press is characterized by further comprising:
A first partition board (3) and a second partition board (301) which are fixedly connected in the filter pressing box (1),
A filter pressing cavity is arranged between the first partition plate (3) and the second partition plate (301), a filter pressing component is arranged in the filter pressing cavity, a liquid leakage hole (302) is formed in the first partition plate (3), and a liquid discharge hole (303) is formed in the second partition plate (301);
The pressing plate (4) is connected in the filter pressing box (1) in a sliding manner and is positioned above the first partition plate (3);
The first spring (401) is fixedly connected between the inner wall of the top of the filter pressing box (1) and the pressing plate (4);
a sleeve (501) fixedly communicated with the inner cavity of the filter pressing box (1),
The connecting sleeve comprises a sleeve body (501), a connecting block (502) is symmetrically and fixedly connected in the sleeve body (501), a guide rod (503) is fixedly connected to the connecting block (502), a limiting ring (504) is fixedly connected to the guide rod (503), a blocking block (506) is slidably connected to the guide rod (503), an exhaust hole (507) is formed in the blocking block (506), the blocking block (506) is attached to the inner wall of the sleeve body (501), and a second spring (505) is fixedly connected between the blocking block (506) and the connecting block (502);
The suction pump (5) is fixedly arranged on the filter pressing box (1), and the output end of the suction pump (5) is fixedly communicated with the inner cavity of the sleeve (501);
an exhaust groove (509) which is arranged on the side wall of the filter pressing box (1) and corresponds to the sleeve (501);
the connecting rod (508) is fixedly connected to the blocking block (506), and one end, away from the blocking block (506), of the connecting rod (508) is fixedly connected with the sealing cover (510).
2. The composite plate and frame filter press according to claim 1, wherein the filter pressing assembly comprises a frame body (306), filter pressing plates (308) and filter cloth (309), the frame body (306) is provided with a plurality of groups, the plurality of groups of frame bodies (306) are transversely arranged in the filter pressing cavity at equal intervals, the filter pressing plates (308) are fixedly connected to the frame body (306), a plurality of groups of grooves are formed in the filter pressing plates (308), the filter cloth (309) is fixedly connected to one side of the filter pressing plates (308), a filter pressing frame is formed between two adjacent groups of frame bodies (306), and the liquid leakage holes (302) correspond to the filter pressing frame.
3. The composite plate and frame filter press according to claim 2, further comprising a mounting plate (305) and a handle (311) fixedly connected to the mounting plate (305), wherein the mounting plate (305) is detachably connected to the filter pressing box (1) by a fixing bolt (310), and the frame (306) is fixedly connected to the mounting plate (305).
4. The composite plate frame filter press according to claim 2, wherein the lower side of the first partition plate (3) and the upper side of the second partition plate (301) are fixedly connected with clamping blocks (304), clamping grooves (307) are formed in the upper end and the lower end of the frame body (306), and the clamping blocks (304) are slidably connected in the clamping grooves (307).
5. The composite plate frame filter press according to claim 1, wherein a sealing plug (511) is fixedly connected to the sealing cover (510), and the sealing plug (511) is inserted into the exhaust groove (509).
6. The composite plate frame filter press according to claim 1, wherein the bottom of the filter pressing box (1) is fixedly connected with a cylinder (2), a screw rod (201) is connected in the cylinder (2) in a threaded manner, one end, away from the cylinder (2), of the screw rod (201) is fixedly connected with a base (202), and the outer wall of the screw rod (201) is fixedly connected with a handle (203).
7. The composite plate frame filter press according to claim 1, wherein a guide rod (402) is fixedly connected to the pressing plate (4), a limiting block (403) is fixedly connected to one end of the guide rod (402) penetrating through the top of the filter pressing box (1), and the guide rod (402) is slidably connected with the filter pressing box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322396005.8U CN221061859U (en) | 2023-09-04 | 2023-09-04 | Composite plate frame type filter press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322396005.8U CN221061859U (en) | 2023-09-04 | 2023-09-04 | Composite plate frame type filter press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221061859U true CN221061859U (en) | 2024-06-04 |
Family
ID=91252052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322396005.8U Active CN221061859U (en) | 2023-09-04 | 2023-09-04 | Composite plate frame type filter press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221061859U (en) |
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2023
- 2023-09-04 CN CN202322396005.8U patent/CN221061859U/en active Active
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