Easily detachable cloth pressing cover for box type filter plate

Abstract

The invention discloses an easy-to-disassemble cloth pressing cover for a box type filter plate, which comprises a cover body, an adjusting sleeve, a buckling cover and a locking key, the cover body is composed of a flange plate and a cylinder, and a center hole of the flange plate is the same as an inner hole of the cylinder with a thread on the outer surface; the adjusting sleeve is composed of a connecting groove and internal threads, the two sides of the connecting groove are symmetrical, the cross section of the connecting groove is a tooth shape with an included angle of 90 degrees and a rack-shaped groove with a certain tooth pitch, and inner holes of the adjusting sleeve are the internal threads. The buckle cover is composed of a round end cover, a connecting body, a locking groove and a groove. The locking key is composed of a side upper face, a side lower face, a pressing face, an elastic groove and a locking protrusion. The included angle between the side upper face and the side lower face is 120 degrees, and a guide face is formed. The locking key is of a two-side-symmetrical structure and is in clearance fit with all faces of the locking groove, the locking protrusion is locked with the groove, and the two pressing faces are located on the two sides of the elastic groove so that force can be conveniently applied for disassembly. The structure is convenient for dismounting the cloth pressing cover and replacing the filter cloth, and the filtering operation efficiency is improved.

Description

Technical Field

[0001] This invention patent relates to the field of filter press machinery in industrial filtration, specifically to a removable pressure cloth cover for a box-type filter plate used in box-type filter press equipment for industrial liquid filtration. Background Technology

[0002] In industrial liquid-solid separation processes, a box-type filter press is often used, where a filter chamber formed between filter plates and a filter press plate is used for liquid-solid separation. The filtered and squeezed liquid passes through filter cloths fixed to the surfaces of the filter plates and the filter press plate, and then flows out through drainage holes on both filter plates. The remaining solid material is left on the outer surface of the filter cloth for easy removal, thus achieving the box-type filtration function. A pressure cloth cover, passing through the central hole of the filter plate, fixes and presses the filter cloth onto both sides of the filter plate. As the filter cloth's service life reaches a certain point, wear and tear will affect the filtration effect, requiring timely replacement. Therefore, the pressure cloth cover must be frequently removed and the filter cloth replaced. However, current pressure cloth cover structures often use a two-flange split structure with threaded connections. During filtration, the gaps at the threaded connections often accumulate and become filled with solid filter material or sludge, making disassembly of the pressure cloth cover very difficult. Sometimes, it is even necessary to cut and damage the filter cloth to remove the pressure cloth cover and replace the filter cloth. This adds difficulty to filtration production and operation, and also reduces operational efficiency. Summary of the Invention

[0003] To address the problems existing in the prior art, the purpose of this invention is to provide an easily detachable pressure cover for a box-type filter plate, achieved through the following technical solution: An easily detachable pressure cover for a box-type filter plate comprises a cover body 1, an adjusting sleeve 2, a snap-on cover 3, and a locking key 4; the cover body 1 is composed of a flange 101 and a cylinder 102, the central hole of the flange 101 being equal to the inner hole of the cylinder 102, whose outer surface is threaded; the adjusting sleeve 2 is composed of connecting grooves 201 and internal threads 202, with four non-through connecting grooves 201 evenly distributed at one end of the adjusting sleeve 2. The two sides are symmetrical and have toothed grooves with a cross-section of 90° and the same tooth pitch. The inner surface of the adjusting sleeve 2 is all internally threaded 202 and is connected to the external thread of the cylinder 102 on the cover body 1 for position adjustment. The buckle 3 is composed of a round end cover 301, a connecting body 302, and a locking groove 303. The outer circle and thickness of the round end cover 301 are the same as those of the flange 101, and the inner hole of the round end cover 301 is clearance-fitted with the outer circle of the cylinder 102. Four connecting bodies 302 are evenly distributed on the inner surface of the round end cover 301. The two sides of the connecting body 302 are symmetrical and horizontal. The tooth profiles with a 90° included angle and the same spacing of the toothed racks are clearance-fitted with the contact surface of the connecting groove 201. The middle locking groove 303 of the connecting body 302 has a symmetrical structure on both sides. Its cross-section is a hexahedral hole, and its inner surface communicates with the inner hole of the cover 3. Its outer surface is a cylindrical surface, and grooves 304 are respectively provided on both sides of its outer outlet. The contact surface of the locking groove 303 and the locking key 4 is clearance-fitted. The locking key 4 is composed of a side upper surface 401, a side lower surface 402, a pressure surface 403, an elastic groove 404, and a locking protrusion 405. The locking key 4 has a symmetrical structure on both sides. 401 and the lower side 402 form a guide surface at a 120° angle. The upper and lower sides of the locking key 4 are cylindrical surfaces. The upper side 401, the lower side 402, and the upper and lower cylindrical surfaces are all clearance fits with the locking groove 303 of the hexahedral hole. The cross-section of the locking protrusion 405 is semi-circular and is interference fit with the grooves 304 on both sides of the outlet of the locking groove 303. The two symmetrical pressure surfaces 403 with through holes in the middle are located on both sides of the long elastic groove 404 to ensure that after the pressure surface 403 is subjected to force, the locking protrusion 405 leaves the groove 304 and the locking key 4 can be moved out of the locking groove 303.

[0004] The beneficial effects of this invention patent are as follows: A detachable box-type filter plate pressure cover includes a cover body 1, an adjusting sleeve 2, a snap cover 3, and a locking key 4. The cover body 1 is composed of a flange 101 and a cylinder 102, with the central hole of the flange 101 being the same as the inner hole of the cylinder 102, which has threads on its outer surface. The adjusting sleeve 2 is composed of a connecting groove 201 and an internal thread 202. The connecting groove 201 has symmetrical teeth on both sides with a cross-section of 90° angle and a rack-like groove with a certain tooth pitch. The inner hole of the adjusting sleeve 2 is entirely internally threaded 202. The snap cover 3 consists of a round end cap 301 and a connecting body 302. 2. The locking groove 303 and the recess 304 are combined; the locking key 4 is composed of a side upper part 401, a side lower part 402, a pressure surface 403, an elastic groove 404, and a locking protrusion 405. The side upper part 401 and the side lower part 402 form a guide surface with an angle of 120°. The locking key 4 has a symmetrical structure on both sides. The locking key 4 and the locking groove 303 are fitted with clearance. The locking protrusion 405 is locked with the recess 304. The two pressure surfaces 403 are located on both sides of the elastic groove 404 to facilitate disassembly by applying force. This structure facilitates the disassembly and assembly of the pressure cloth cover and the replacement of the filter cloth, thereby improving the efficiency of the filtration operation. Attached Figure Description

[0005] Figure 1 This is a three-dimensional assembly diagram of the pressure cloth cover of the present invention.

[0006] Figure 2 This is a partial schematic diagram of the connection point on the outer surface of the pressure cover of the present invention.

[0007] Figure 3 This is a three-dimensional schematic diagram of the cover body of the pressure cloth cover of the present invention.

[0008] Figure 4 This is a schematic diagram of the adjusting three-dimensional sleeve of the pressure cover of the present invention.

[0009] Figure 5 This is a three-dimensional schematic diagram of the cover of the pressure cloth cover of the present invention.

[0010] Figure 6 This is a three-dimensional schematic diagram of the locking key of the pressure cover of the present invention.

[0011] In the diagram: 1. Cover; 101. Flange; 102. Cylinder; 2. Adjusting sleeve; 201. Connecting groove; 202. Internal thread; 3. Snap cover; 301. Round end cover; 302. Connector; 303. Locking groove; 304. Groove; 4. Locking key; 401. Upper side; 402. Lower side; 403. Pressing surface; 404. Elastic groove; 405. Locking protrusion. Detailed Implementation

[0012] according to Figures 1 to 6As shown, a box-type filter press with an adjustable filter chamber comprises: a cover 1, an adjusting sleeve 2, a snap-on cover 3, and a locking key 4; the cover 1 is composed of a flange 101 and a cylinder 102, the central hole of the flange 101 being equal to the inner hole of the cylinder 102, whose outer surface is threaded; the adjusting sleeve 2 is composed of connecting grooves 201 and internal threads 202, with four non-through connecting grooves 201 evenly distributed on one end of the adjusting sleeve 2, symmetrical on both sides, and having toothed grooves with a cross-section of 90° and the same tooth pitch, and the inner surface of the adjusting sleeve 2... All are internally threaded 202 and connected to the external thread of the cylinder 102 on the cover 1 for position adjustment; the buckle 3 is composed of a round end cap 301, a connecting body 302, and a locking groove 303. The outer circle and thickness of the round end cap 301 are the same as those of the flange 101, and the inner hole of the round end cap 301 is clearance-fitted with the outer circle of the cylinder 102. Four connecting bodies 302 are evenly distributed on the inner surface of the round end cap 301. The two sides of the connecting body 302 are symmetrical and the cross-sections are all toothed with a 90° included angle and toothed racks with the same spacing, which are connected to the connecting groove 201. The contact surfaces are fitted with a clearance fit. The locking groove 303 in the middle of the connecting body 302 has a symmetrical structure on both sides. Its cross-section is a hexahedral hole, and its inner surface communicates with the inner hole of the buckle cover 3. Its outer surface is a cylindrical surface, and grooves 304 are respectively provided on both sides of its outer outlet. The contact surface between the locking groove 303 and the locking key 4 is fitted with a clearance fit. The locking key 4 is composed of a side upper surface 401, a side lower surface 402, a pressure surface 403, an elastic groove 404, and a locking protrusion 405. The locking key 4 has a symmetrical structure on both sides, and the side upper surface 401 and the side lower surface 402 are at a 120° angle. The guide surface is formed by the included angle. The upper and lower surfaces of the locking key 4 are cylindrical. The upper side 401, lower side 402 and the upper and lower cylindrical surfaces are all clearance fits with the locking groove 303 of the hexahedral hole. The cross-section of the locking protrusion 405 is semi-circular and is interference fit with the grooves 304 on both sides of the outlet of the locking groove 303. The two symmetrical pressure surfaces 403 with through holes in the middle are located on both sides of the long elastic groove 404 to ensure that after the pressure surface 403 is subjected to force, the locking protrusion 405 leaves the groove 304 and the locking key 4 can be moved out of the locking groove 303.

Claims

1. A cloth pressing cover for a box-type filter plate, characterized by: It comprises a cover (1), an adjusting sleeve (2), a snap cover (3), and a locking key (4); the cover (1) is composed of a flange (101) and a cylinder (102), the central hole of the flange (101) being equal to the inner hole of the cylinder (102) with a threaded outer surface; the adjusting sleeve (2) is composed of a connecting groove (201) and an internal thread (202), the four non-through connecting grooves (201) evenly distributed on one end of the adjusting sleeve (2) are symmetrical on both sides and have tooth-shaped grooves with a cross-section of (90)° and the same tooth pitch, the inner surface of the adjusting sleeve (2) is all internally threaded (202). The cover (3) is connected to the external thread of the cylinder (102) on the cover (1) and its position is adjusted. The cover (3) consists of a round end cover (301), a connecting body (302), and a locking groove (303). The outer circle and thickness of the round end cover (301) are the same as those of the flange (101), and the inner hole of the round end cover (301) is clearance-fitted with the outer circle of the cylinder (102). Four connecting bodies (302) are evenly distributed on the inner surface of the round end cover (301). The two sides of the connecting body (302) are symmetrical and the cross-sections are all toothed with a 90° included angle and the same spacing of the toothed teeth. The contact surface with the connecting groove (201) is... The locking groove (303) of the connecting body (302) has a symmetrical structure on both sides. Its cross-section is a hexagonal hole, and its inner side is connected to the inner hole of the cover (3). Its outer side is a cylindrical surface, and grooves (304) are respectively provided on both sides of its outer outlet. The locking groove (303) and the locking key (4) have a clearance fit. The locking key (4) is composed of a side upper surface (401), a side lower surface (402), a pressure surface (403), an elastic groove (404), and a locking protrusion (405). The locking key (4) has a symmetrical structure on both sides. The side upper surface (401) and the side lower surface (402) are 120° apart. The included angle forms a guide surface. The upper and lower surfaces of the locking key (4) are cylindrical. The upper side surface (401), lower side surface (402), and upper and lower cylindrical surfaces are all clearance fits with the locking groove (303) of the hexahedral hole. The cross-section of the locking protrusion (405) is semi-circular and is interference fit with the grooves (304) on both sides of the outlet of the locking groove (303). The two symmetrical pressure surfaces (403) with through holes in the middle are located on both sides of the long elastic groove (404) to ensure that after the pressure surface (403) is subjected to force, the locking protrusion (405) leaves the groove (304) and the locking key (4) can be moved out of the locking groove (303).

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