阅读说明：本技术 一种压滤机滤布多杆清洗机构 (Multi-rod cleaning mechanism for filter cloth of filter press ) 是由 倪国炳 胡金胜 黄旭东 莫廷斌 于 2021-10-11 设计创作，主要内容包括：本发明涉及压滤机滤布清洗技术领域,且公开了一种压滤机滤布多杆清洗机构,包括压滤机架,所述压滤机架设置有第一U形框,所述第一U形框内部设置有清理机构,所述清理机构延伸出第一U形框外部。该一种压滤机滤布多杆清洗机构,通过清理机构的设计,第一电机工作带动伸缩转动杆转动,伸缩转动杆带动第一锥齿轮转动,第一锥齿轮带动第二锥齿轮转动,第二锥齿轮带动第一辊轴转动,第一辊轴还带动第一皮带轮转动,第一皮带轮通过第一皮带带动第二皮带轮转动,第二皮带轮带动第二辊轴转动,则与以上原理相似,此时第一辊轴和第二辊轴分别带动两个底板转动,底板带动清洁刷进行转动,对不同的滤布同时清刷,提高了清刷速度。(The invention relates to the technical field of filter cloth cleaning of filter presses and discloses a multi-rod cleaning mechanism for filter cloth of a filter press, which comprises a filter press frame, wherein the filter press frame is provided with a first U-shaped frame, a cleaning mechanism is arranged in the first U-shaped frame, and the cleaning mechanism extends out of the first U-shaped frame. This many poles of pressure filter cloth wiper mechanism, design through clearance mechanism, first motor work drives flexible dwang and rotates, flexible dwang drives first bevel gear and rotates, first bevel gear drives second bevel gear and rotates, second bevel gear drives first roller and rotates, first roller still drives first belt pulley and rotates, first belt pulley drives the second belt pulley through first belt and rotates, the second belt pulley drives the second roller and rotates, then similar with above principle, first roller and second roller drive two bottom plates respectively and rotate this moment, the bottom plate drives the cleaning brush and rotates, clean the brush simultaneously to different filter cloths, the speed of cleaning is improved.)

1. The utility model provides a many poles of pressure filter cloth wiper mechanism, includes filter press frame (1), its characterized in that: the filter pressing machine is characterized in that a first U-shaped frame (2) is arranged on the filter pressing rack (1), a cleaning mechanism (3) is arranged inside the first U-shaped frame (2), the cleaning mechanism (3) extends out of the first U-shaped frame (2), a second U-shaped frame (4) is arranged at the top of the filter pressing rack (1), two cross rods (5) are fixedly connected between the first U-shaped frame (2) and the second U-shaped frame (4), a washing mechanism (6) is fixedly connected to the top of the second U-shaped frame (4), and a regulating mechanism (7) is also rotatably connected to the top of the second U-shaped frame (4);

clearance mechanism (3) are including first motor (31), first motor (31) fixed connection is in first U-shaped frame (2) top, first motor (31) are through flexible dwang (32) of output shaft fixedly connected with, logical groove (33) have all been seted up to second U-shaped frame (4) both sides, second U-shaped frame (4) inside is provided with first roller (34), first roller (34) run through logical groove (33) and extend second U-shaped frame (4) outside.

2. The filter press cloth multi-rod cleaning mechanism according to claim 1, wherein: flexible dwang (32) outside fixedly connected with gear frame (35), flexible dwang (32) run through gear frame (35) top and rotate with gear frame (35) and be connected, first roller (34) run through gear frame (35) one side and rotate with gear frame (35) and be connected, first roller (34) one side is rotated and is connected with square piece (36), square piece (36) top fixedly connected with limit telescopic link (37), limit telescopic link (37) top and first U-shaped frame (2) inner chamber top fixed connection.

3. The filter press cloth multi-rod cleaning mechanism according to claim 2, wherein: equal fixedly connected with limiting plate (38) in gear frame (35) and square piece (36) one side, the spacing groove has all been seted up to first U-shaped frame (2) inner chamber both sides wall, two limiting plate (38) extend into two spacing inslot portions respectively.

4. The filter press cloth multi-rod cleaning mechanism according to claim 1, wherein: the bottom of the telescopic rotating rod (32) is fixedly connected with a first bevel gear (39), one side of the first roller shaft (34) is fixedly connected with a second bevel gear (391), the second bevel gear (391) is arranged at the bottom of the first bevel gear (39), the second bevel gear (391) is meshed with the first bevel gear (39), a second roller shaft (392) is arranged inside the gear frame (35), the second roll shaft (392) penetrates through the gear frame (35) and is rotationally connected with the gear frame (35), the second roll shaft (392) penetrates through the through groove (33), the second roll shaft (392) is arranged at the rear side of the first roll shaft (34), one side of the second roller shaft (392) is rotationally connected with one side of the square block (36), the outer parts of the first roller shaft (34) and the second roller shaft (392) are fixedly connected with a bottom plate (393), and the outer part of the bottom plate (393) is fixedly connected with a cleaning brush (394).

5. The filter press cloth multi-rod cleaning mechanism according to claim 1, wherein: first roller (34) outside fixedly connected with first belt pulley (395), second roller (392) outside fixedly connected with second belt pulley (396), be provided with first belt between first belt pulley (395) and second belt pulley (396), first belt pulley (395) is connected through first belt with second belt pulley (396).

6. The filter press cloth multi-rod cleaning mechanism according to claim 1, wherein: flushing mechanism (6) includes water tank (61), water tank (61) fixed connection is in second U-shaped frame (4) top, water tank (61) top fixedly connected with adds water funnel (62), two L venturi tubes (63) of water tank (61) bottom fixedly connected with, water tank (61) bottom fixedly connected with pipe (64) still, between pipe (64) fixed connection and two L venturi tubes (63), equal fixedly connected with shower nozzle (65) in pipe (64) and two L venturi tubes (63) bottom, shower nozzle (65) set up in cleaning brush (394) top, filter-press frame (1) middle drain (66) that begins.

7. The filter press cloth multi-rod cleaning mechanism according to claim 1, wherein: regulating and controlling mechanism (7) includes second motor (71), second motor (71) fixed connection and first U-shaped frame (2) top, second motor (71) are through first threaded rod (72) of output shaft fixedly connected with, first threaded rod (72) run through first U-shaped frame (2) top and rotate with first U-shaped frame (2) and be connected, first U-shaped frame (2) inner chamber top is rotated and is connected with second threaded rod (73), first threaded rod (72) and second threaded rod (73) bottom all are rotated with second U-shaped frame (4) top both sides and are connected.

8. The filter press cloth multi-rod cleaning mechanism according to claim 7, wherein: first threaded rod (72) and second threaded rod (73) outside all is provided with screw thread piece (74), first threaded rod (72) and second threaded rod (73) pass through threaded connection, two with two screw thread pieces (74) respectively the equal fixedly connected with of screw thread piece (74) one side links up fishplate bar (75), two link up fishplate bar (75) bottom respectively with gear frame (35) and square piece (36) top fixed connection, first threaded rod (72) outside fixedly connected with third belt pulley (76), second screw thread piece (74) outside fixedly connected with fourth belt pulley (77), be provided with the second belt between third belt pulley (76) and fourth belt pulley (77), third belt pulley (76) are connected through the second belt with fourth belt pulley (77).

9. The filter press cloth multi-rod cleaning mechanism according to claim 1, wherein: first U-shaped frame (2) one side fixedly connected with push pedal (78), two gag lever post (79) of first U-shaped frame (2) inner chamber top fixedly connected with, two gag lever post (79) run through two linkage plate (75) respectively, two gag lever post (79) bottom all with second U-shaped frame (4) top fixed connection, first U-shaped frame (2) top fixedly connected with motor frame (791), filter-pressing frame (1) top begins to have four spouts, equal fixedly connected with assembly pulley (792) in first U-shaped frame (2) and second U-shaped frame (4) both sides bottom, four assembly pulley (792) set up respectively inside four spouts.

Technical Field

The invention relates to the technical field of filter cloth cleaning of filter presses, in particular to a multi-rod cleaning mechanism for filter cloth of a filter press.

Background

The filter press utilizes a special filter medium to apply a certain pressure to an object, so that a mechanical device for dialyzing liquid is a common solid-liquid separation device, is applied to chemical production at the beginning of 18 th century, is still widely applied to industries such as chemical industry, pharmacy, metallurgy, dye, food, brewing, ceramics, environmental protection and the like until now, and has stable performance, convenient operation, safety and labor saving; the metal squeezing cylinder is formed by processing a seamless steel pipe and precisely casting a plastic steel filter plate, is high-temperature-resistant, high-pressure-resistant and durable, and in the composition of the filter press, a frame is a basic component of the filter press, two ends of the frame are provided with a thrust plate and a pressing head, the thrust plate and the pressing head are connected by crossbeams at two sides, and the crossbeams are used for supporting the filter plate, a filter frame and the pressing plate.

At present current pressure filter is after using, can remain more impurity on the filter cloth, can lead to the bleeder vent of filter cloth to take place to block up through not in time clearing up, generally directly washes by artifical use squirt to the filter cloth clearance at present, and is more troublesome, and the cleaning performance is not good enough, and the filter cloth surface still can have the particulate matter to exist.

Disclosure of Invention

The invention aims to provide a multi-rod cleaning mechanism for filter cloth of a filter press, which aims to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a many poles of pressure filter cloth wiper mechanism, includes the filter press frame, the filter press frame is provided with first U-shaped frame, the inside clearance mechanism that is provided with of first U-shaped frame, clearance mechanism extends first U-shaped frame outside, filter press frame top is provided with second U-shaped frame, two horizontal poles of fixedly connected with between first U-shaped frame and the second U-shaped frame, second U-shaped frame top fixedly connected with washes the mechanism, second U-shaped frame top still rotates and is connected with regulation and control mechanism.

Clearance mechanism includes first motor, first motor fixed connection is in first U-shaped frame top, first motor passes through the flexible dwang of output shaft fixedly connected with, logical groove has all been seted up to second U-shaped frame both sides, the inside first roller that is provided with of second U-shaped frame, first roller runs through logical groove and extends the second U-shaped frame outside.

Preferably, the outside fixedly connected with gear frame of flexible dwang, flexible dwang runs through gear frame top and rotates with the gear frame to be connected, first roller runs through gear frame one side and rotates with the gear frame to be connected, first roller one side is rotated and is connected with square piece, square piece top fixedly connected with is spacing telescopic link, spacing telescopic link top and first U-shaped frame inner chamber top fixed connection, gear frame provides the support for first roller.

Preferably, gear frame and the equal fixedly connected with limiting plate in square piece one side, the spacing groove has all been seted up to first U-shaped frame inner chamber both sides wall, two the limiting plate extends into two spacing inslots respectively, and the limiting plate can provide spacingly for square piece and gear frame.

Preferably, the first bevel gear of flexible dwang bottom fixedly connected with, first roller one side fixedly connected with second bevel gear, second bevel gear sets up in first bevel gear bottom, second bevel gear meshes with first bevel gear mutually, and the gear frame is inside to be provided with the second roller, the second roller runs through the gear frame and rotates with the gear frame and be connected, the second roller runs through logical groove, the second roller sets up in first roller rear side, second roller one side rotates with square one side and is connected, the equal fixedly connected with bottom plate in first roller and the second roller outside, the outside fixedly connected with cleaning brush of bottom plate, second bevel gear drive first roller and rotate.

Preferably, the first belt pulley is fixedly connected to the outer portion of the first roller shaft, the second belt pulley is fixedly connected to the outer portion of the second roller shaft, a first belt is arranged between the first belt pulley and the second belt pulley, the first belt pulley is connected with the second belt pulley through the first belt, and the second belt pulley drives the second roller shaft to rotate.

Preferably, the washing mechanism comprises a water tank, the water tank is fixedly connected to the top of the second U-shaped frame, a water adding funnel is fixedly connected to the top of the water tank, two L-shaped pipes are fixedly connected to the bottom of the water tank, a round pipe is fixedly connected to the bottom of the water tank, the round pipe is fixedly connected between the round pipe and the two L-shaped pipes, a spray head is fixedly connected to the bottoms of the round pipe and the two L-shaped pipes, the spray head is arranged at the top of the cleaning brush, a drain outlet is arranged in the middle of the filter pressing rack, and the spray head sprays water to the cleaning brush and the filter cloth for washing.

Preferably, regulation and control mechanism includes the second motor, second motor fixed connection and first U-shaped frame top, the second motor passes through the first threaded rod of output shaft fixedly connected with, first threaded rod runs through first U-shaped frame top and rotates with first U-shaped frame to be connected, first U-shaped frame inner chamber top is rotated and is connected with the second threaded rod, first threaded rod and second threaded rod bottom all rotate with second U-shaped frame top both sides and are connected, and first threaded rod and second threaded rod rotate simultaneously.

Preferably, the outside of first threaded rod and second threaded rod all is provided with the thread piece, first threaded rod and second threaded rod pass through threaded connection, two with two thread pieces respectively the equal fixedly connected with of thread piece one side links up the fishplate bar, two link up fishplate bar bottom respectively with gear frame and square piece top fixed connection, the outside fixedly connected with third belt pulley of first threaded rod, the outside fixedly connected with fourth belt pulley of second thread piece, be provided with the second belt between third belt pulley and the fourth belt pulley, the third belt pulley passes through the second belt with the fourth belt pulley and is connected, and when second motor corotation and reversal, the thread piece upwards and downstream respectively.

Preferably, first U-shaped frame one side fixedly connected with push pedal, two gag lever posts of first U-shaped frame inner chamber top fixedly connected with, two the gag lever post runs through two linkage plate respectively, two the gag lever post bottom all with second U-shaped frame top fixed connection, first U-shaped frame top fixedly connected with motor frame, filter press frame top begins to have four spouts, the equal fixedly connected with assembly pulley in first U-shaped frame and second U-shaped frame both sides bottom, four the assembly pulley sets up respectively inside four spouts, and the motor frame provides the protection for first motor and second motor.

Compared with the prior art, the invention provides a multi-rod cleaning mechanism for filter cloth of a filter press. The method has the following beneficial effects:

1. this many poles of pressure filter cloth wiper mechanism, design through clearance mechanism, first motor work drives flexible dwang and rotates, flexible dwang drives first bevel gear and rotates, first bevel gear drives second bevel gear and rotates, second bevel gear drives first roller and rotates, first roller still drives first belt pulley and rotates, first belt pulley drives the second belt pulley through first belt and rotates, the second belt pulley drives the second roller and rotates, then similar with above principle, first roller and second roller drive two bottom plates respectively and rotate this moment, the bottom plate drives the cleaning brush and rotates, can carry out the while to different filter cloths and clean the brush, the speed of cleaning the brush is improved.

2. This many poles of pressure filter cloth wiper mechanism through the design of washing the mechanism, when the cleaning brush please brush the filter cloth surface, three shower nozzle absorbs the water of water tank inside, and the downward blowout can be washed cleaning brush and filter cloth, makes the effect of cleaning thoroughly, makes cleaning brush and shower nozzle supplementary to erode the filter cloth, and the cleaning effect is more thorough.

3. This many poles of pressure filter cloth wiper mechanism, through the design of regulation and control mechanism, first motor is when the reversal, first threaded rod and second threaded rod drive two screw thread blocks downstream simultaneously this moment, the screw thread block drives the connection board and removes, two connection boards drive gear frame and square piece removal respectively, gear frame and direction piece drive first roller and second roller removal, when motor corotation, opposite with above moving direction, then realize that the cleaning brush carries out the top-to-bottom rotation between the filter cloth of difference and clean the brush, the face that makes the brush clean is more even.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the structure of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is an enlarged view of FIG. 2 at B

Fig. 5 is a side sectional view of the gear frame of the present invention.

In the figure: 1. a filter press frame; 2. a first U-shaped frame; 3. a cleaning mechanism; 31. a first motor; 32. a telescopic rotating rod; 33. a through groove; 34. a first roller shaft; 35. a gear frame; 36. a square block; 37. limiting the telescopic rod; 38. a limiting plate; 39. a first bevel gear; 391. a second bevel gear; 392. a second roller shaft; 393. a base plate; 394. a cleaning brush; 395. a first pulley; 396. a second pulley; 4. a second U-shaped frame; 5. a cross bar; 6. a flushing mechanism; 61. a water tank; 62. a water adding funnel; 63. an L-shaped tube; 64. a circular tube; 65. a spray head; 66. a sewage draining outlet; 7. a regulating mechanism; 71. a second motor; 72. a first threaded rod; 73. a second threaded rod; 74. a thread block; 75. a connector tile; 76. a third belt pulley; 77. a fourth belt pulley; 78. pushing the plate; 79. a limiting rod; 791. a motor frame; 792. and (4) a pulley block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a many poles of pressure filter cloth wiper mechanism, including pressure filter frame 1, pressure filter frame 1 is provided with first U-shaped frame 2, the inside clearance mechanism 3 that is provided with of first U-shaped frame 2, clearance mechanism 3 extends first U-shaped frame 2 outsidely, 1 top of pressure filter frame is provided with second U-shaped frame 4, two horizontal poles of fixedly connected with 5 between first U-shaped frame 2 and the second U-shaped frame 4, 4 top fixedly connected with of second U-shaped frame wash mechanism 6, 4 tops of second U-shaped frame still rotate and are connected with regulation and control mechanism 7.

The cleaning mechanism 3 comprises a first motor 31, the first motor 31 is fixedly connected with the top of the first U-shaped frame 2, the first motor 31 is fixedly connected with a telescopic rotating rod 32 through an output shaft, both sides of the second U-shaped frame 4 are respectively provided with a through groove 33, a first roller 34 is arranged inside the second U-shaped frame 4, the first roller 34 penetrates through the through groove 33 and extends out of the second U-shaped frame 4, the outside of the telescopic rotating rod 32 is fixedly connected with a gear frame 35, the telescopic rotating rod 32 penetrates through the top of the gear frame 35 and is rotatably connected with the gear frame 35, the first roller 34 penetrates through one side of the gear frame 35 and is rotatably connected with the gear frame 35, one side of the first roller 34 is rotatably connected with a square block 36, the top of the square block 36 is fixedly connected with a limit telescopic rod 37, the top of the limit telescopic rod 37 is fixedly connected with the top of the inner cavity of the first U-shaped frame 2, and one side of the gear frame 35 and one side of the square block 36 are both fixedly connected with limit plates 38, both side walls of the inner cavity of the first U-shaped frame 2 are provided with limiting grooves, two limiting plates 38 respectively extend into the two limiting grooves, the bottom of the telescopic rotating rod 32 is fixedly connected with a first bevel gear 39, one side of the first roll shaft 34 is fixedly connected with a second bevel gear 391, the second bevel gear 391 is arranged at the bottom of the first bevel gear 39, the second bevel gear 391 is meshed with the first bevel gear 39, a second roll shaft 392 is arranged inside the gear frame 35, the second roll shaft 392 penetrates through the gear frame 35 and is rotatably connected with the gear frame 35, the second roll shaft 392 penetrates through the through groove 33, the second roll shaft 392 is arranged at the rear side of the first roll shaft 34, one side of the second roll shaft 392 is rotatably connected with one side of the square block 36, both the outsides of the first roll shaft 34 and the second roll shaft 392 are fixedly connected with a bottom plate 393, the outsides of the bottom plate 393 are fixedly connected with a cleaning brush 394, the outsides of the first roll shaft 34 is fixedly connected with a first belt pulley 395, and the outside of the second roll shaft 392 is fixedly connected with a second belt pulley 396, a first belt is arranged between the first belt pulley 395 and the second belt pulley 396, and the first belt pulley 395 is connected with the second belt pulley 396 through the first belt.

The flushing mechanism 6 comprises a water tank 61, the water tank 61 is fixedly connected to the top of the second U-shaped frame 4, a water adding funnel 62 is fixedly connected to the top of the water tank 61, two L-shaped pipes 63 are fixedly connected to the bottom of the water tank 61, a round pipe 64 is fixedly connected to the bottom of the water tank 61, the round pipe 64 is fixedly connected to the two L-shaped pipes 63, a spray head 65 is fixedly connected to the bottoms of the round pipe 64 and the two L-shaped pipes 63, the spray head 65 is arranged at the top of a cleaning brush 394, and a sewage draining outlet 66 is formed in the middle of the filter pressing frame 1.

The regulating mechanism 7 comprises a second motor 71, the second motor 71 is fixedly connected with the top of the first U-shaped frame 2, the second motor 71 is fixedly connected with a first threaded rod 72 through an output shaft, the first threaded rod 72 penetrates through the top of the first U-shaped frame 2 and is rotatably connected with the first U-shaped frame 2, the top of the inner cavity of the first U-shaped frame 2 is rotatably connected with a second threaded rod 73, the bottoms of the first threaded rod 72 and the second threaded rod 73 are rotatably connected with two sides of the top of the second U-shaped frame 4, thread blocks 74 are respectively arranged outside the first threaded rod 72 and the second threaded rod 73, the first threaded rod 72 and the second threaded rod 73 are respectively connected with the two thread blocks 74 through threads, one side of each thread block 74 is fixedly connected with a connecting plate 75, the bottoms of the two connecting plates 75 are respectively fixedly connected with the tops of the gear frame 35 and the square block 36, a third belt pulley 76 is fixedly connected with the outside of the first threaded rod 72, a fourth belt pulley 77 is fixedly connected with the outside of the second thread block 74, a second belt is arranged between the third belt pulley 76 and the fourth belt pulley 77, the third belt pulley 76 is connected with the fourth belt pulley 77 through the second belt, a push plate 78 is fixedly connected to one side of the first U-shaped frame 2, two limiting rods 79 are fixedly connected to the top of the inner cavity of the first U-shaped frame 2, the two limiting rods 79 respectively penetrate through the two connecting plates 75, the bottoms of the two limiting rods 79 are fixedly connected to the top of the second U-shaped frame 4, a motor frame 791 is fixedly connected to the top of the first U-shaped frame 2, four sliding grooves are formed in the top of the filter press frame 1, pulley blocks 792 are fixedly connected to the bottoms of the two sides of the first U-shaped frame 2 and the bottom of the two sides of the second U-shaped frame 4 respectively, and the four pulley blocks 792 are arranged inside the four sliding grooves respectively.

In the practical operation process, when the device is used, firstly, the device is connected with an external power supply, firstly, a user pushes the push plate 78 to make the first U-shaped frame 2 move to a proper position, then the first motor 31 works to drive the telescopic rotating rod 32 to rotate, the telescopic rotating rod 32 drives the first bevel gear 39 to rotate, the first bevel gear 39 drives the second bevel gear 391 to rotate, the second bevel gear 391 drives the first roller shaft 34 to rotate, the first roller shaft 34 also drives the first belt pulley 395 to rotate, the first belt pulley 395 drives the second belt pulley 396 to rotate through the first belt, the second belt pulley 396 drives the second roller shaft 392 to rotate, the principle is similar to the above, at this time, the first roller shaft 34 and the second roller shaft 392 respectively drive the two bottom plates 393 to rotate, the bottom plates 393 drive the cleaning brush 394 to rotate, and at the same time, the first motor 31 drives the first threaded rod 72 to rotate when rotating reversely, the first belt pulley 72 drives the third belt pulley 76 to rotate, the third belt pulley 76 drives the fourth belt pulley 77 to rotate through the second belt, the fourth belt pulley 77 drives the second threaded rod 73 to rotate, at the moment, the first threaded rod 72 and the second threaded rod 73 simultaneously drive the two threaded blocks 74 to move downwards, the threaded blocks 74 drive the connecting plate 75 to move, the two connecting plates 75 respectively drive the gear frame 35 and the square block 36 to move, the gear frame 35 and the direction block drive the first roller shaft 34 and the second roller shaft 392 to move, when the motor rotates forwards, the moving direction is opposite to the moving direction, the cleaning brush 394 can rotate up and down between different filter cloths to clean, when water needs to be sprayed, the three spray heads 65 suck water inside the water tank 61, then the water is sprayed downwards, the cleaning brush 394 and the filter cloths are washed, and the cleaning effect is more thorough.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.