Circulating air filtering device of pressure spray drying tower

Abstract

The invention discloses a circulating air filtering device of a pressure spray drying tower, and belongs to the technical field of pressure spray drying towers. The device comprises a tower body, a circulating pipe and a filtering assembly fixedly installed at the end of the circulating pipe, the filtering assembly comprises a shell and a plurality of filtering plates, the circulating pipe penetrates through the shell and is fixedly connected with the shell, a plurality of sets of fixing rods are fixedly installed on the outer side of the shell, the multiple filtering plates are installed in the shell in a sliding mode, and the fixing rods are fixedly connected with the shell. And a cleaning assembly for the filter plate is mounted in the shell. In the filtering process, the motor is started to drive the sliding block to move up and down, so that the filtering plate shakes to a certain extent, the possibility that the filtering plate is blocked by large-particle dust is prevented, and the normal filtering effect of the filtering plate is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pressure spray drying tower, and particularly relates to a circulating air filtering device of a pressure spray drying tower. BACKGROUND

[0002] The pressure spray drying tower is a process test instrument used in the field of food science and technology, mainly applied to the production and research of various powder products, and can atomize various emulsion raw materials into small droplets, remove water through instantaneous high temperature, form small solid particles, realize powderization of the raw materials, and realize the agglomeration effect of the powder through the multi-spray gun and the fine powder recovery system of the attached tower, so that the powder product particles are agglomerated into the target particle size. In order to ensure the normal operation of the pressure spray drying tower, the circulating system is often used to maintain the normal pressure inside the pressure spray drying tower. In the circulating system, the filter device is often installed outside the circulating pipe inside the pressure spray drying tower to prevent the material inside the pressure spray drying tower from entering the circulating pipe. The traditional filter device is simple in structure and mainly composed of multiple filter plates, and has low manufacturing cost. However, in the actual processing process, the humidity inside the pressure spray drying tower is high, a large amount of water droplets are formed outside the filter plate, and a large amount of dust exists in the pressure spray drying tower. The larger particles of dust directly block the filter plate, affecting the filtering effect of the filter plate. The smaller particles of dust are attracted to each other and accumulated outside the filter plate, affecting the processing effect of the pressure spray drying tower itself. Moreover, the workers do not know the amount of dust in the actual processing process, and need to clean the filter plate regularly, which is time-consuming and laborious. Therefore, the circulating air filtering device of the pressure spray drying tower is provided. SUMMARY

[0003] The purpose of the present application is to solve the problems existing in the prior art and provide a circulating air filtering device of a pressure spray drying tower.

[0004] The present application adopts the following technical solutions: The utility model provides a kind of pressure spray drying tower circulating air filter device, including tower body, circulating pipe and fixedly installed filter assembly in the end of circulating pipe, the filter assembly includes shell, filter plate, the circulating pipe is through in shell and shell fixed connection, the outside of shell is fixedly installed with multiple groups of fixed rod, the number of the filter plate is multiple, multiple the filter plate is slidably installed in shell interior, cleaning assembly is installed to the filter plate in the shell, the cleaning assembly includes rotating cylinder and clean cloth wrapped in the outside of rotating cylinder, multiple groups of slide rods are fixedly installed in the shell, sliding block is slidably connected on each the slide rod, the both sides of sliding block are fixedly connected with moving plate, first connecting rod is fixedly connected between the moving plate of adjacent two the sliding block, rotating shaft is rotatably connected in the moving plate, the one end of rotating shaft is fixedly connected with gear, multiple groups of rack are fixedly connected in the shell, gear and rack are engaged, slot is opened on the moving plate, square rod is slidably connected in the slot, rotating rod is rotatably connected between the square rod, rotating rod and rotating shaft are drivingly connected by belt pulley assembly, rotating cylinder is fixedly connected with rotating rod, driving assembly for controlling the up-and-down movement of sliding block is installed in the shell.

[0005] Preferably, the driving assembly includes a motor fixedly installed inside the shell, the output end of the motor is fixedly connected with a reciprocating screw rod, the outer side of the reciprocating screw rod is threadedly sleeved with a threaded block, and the threaded block is fixedly connected with one of the sliding blocks.

[0006] Preferably, the moving plate is provided with a control assembly for controlling the movement of the rotating rod, the control assembly includes a sliding plate and a rotating plate, the sliding plate is fixedly sleeved on the outer side of the square rod, the rotating shaft is fixedly sleeved with the rotating plate on the outer side, the moving plate is fixedly connected with a baffle, the outer side of the rotating plate is circumferentially provided with a plurality of grooves, the lower side of the moving plate is slidably connected with two groups of round rods, the lower side of the two groups of round rods is fixedly connected with a third connecting plate, the third connecting plate and the moving plate are fixedly connected with a second spring, the outer side of the third connecting plate is fixedly connected with a cleaning plate, the upper side of the cleaning plate is provided with a cleaning groove, and the third spring is fixedly connected between the square rod and the slot.

[0007] Preferably, the lower side of the sliding block is provided with a switch assembly, the switch assembly includes a fourth connecting plate, two contact switches and a contact rod, the fourth connecting plate is fixedly installed on the lower side of the sliding block, the two contact switches are fixedly connected with the fourth connecting plate, the lower side of the third connecting plate is fixedly connected with the contact rod, and the contact rod abuts against the contact switch.

[0008] Preferably, the upper side of the moving plate is provided with a tensioning assembly, the tensioning assembly comprises a second connecting rod, the second connecting rod is located on the inner side of the pulley assembly and abuts against the pulley assembly, the two ends of the second connecting rod are fixedly connected with a second connecting plate, the second connecting plate penetrates the moving plate and is slidingly connected with the moving plate, the upper side of the second connecting plate is fixedly connected with a same first connecting plate, and the first connecting plate and the moving plate are fixedly connected with a first spring.

[0009] Preferably, the outer side of the filter plate is uniformly fixedly connected with a plurality of groups of protrusions, and the plurality of groups of protrusions are located on the inner side of the sliding block and abut against the sliding block.

[0010] Preferably, the cleaning groove is arranged in an inclined manner.

[0011] The beneficial effects of the present application are: 1. Firstly, during the filtering process, the motor is started to drive the sliding block to move up and down, thereby causing the filter plate to shake to a certain extent, preventing the possibility of large particle dust blocking the filter plate, and thereby ensuring the normal filtering effect of the filter plate. 2. At the same time, in the process of the sliding block moving up and down, the moving plate and the cleaning cloth will also move following the moving plate, and under the action of the rotating plate, the cleaning cloth and the filter plate will abut against each other, thereby forming a wiping operation on the surface of the filter plate, cleaning the water droplets and dust on the surface of the filter plate, and maintaining the normal filtering effect of the filter plate. 3. Moreover, after the cleaning cloth is cleaned, the rotating rotating plate will also drive the cleaning plate to move up and down, which will form a squeezing operation on the cleaning cloth, so that a certain amount of water droplets and dust inside the cleaning cloth will be separated from the cleaning cloth, and then enter the cleaning groove along the inside of the cleaning groove, thereby keeping the cleaning cloth in good cleaning effect. 4. Finally, by comparing the starting time of the contact switch, it can be determined whether the water droplets and dust on the outer side of the filter plate are too much or not, whether timely adjustment is needed, and thereby forming a corresponding reminding effect. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 A structural schematic view of a tower body in a pressure spray drying tower circulating air filtering device is provided for the present application; Figure 2 A top view connection schematic view of a tower body in a pressure spray drying tower circulating air filtering device is provided for the present application; Figure 3 A sectional view structural schematic view of a shell in a pressure spray drying tower circulating air filtering device is provided for the present application; Figure 4 A filter plate connection schematic view in a pressure spray drying tower circulating air filtering device is provided for the present application; Figure 5A pressure spray drying tower circulating air filter device cleaning assembly structure diagram is provided in the present application; Figure 6 A pressure spray drying tower circulating air filter device sliding block, sliding rod connection diagram is provided in the present application; Figure 7 A pressure spray drying tower circulating air filter device moving plate cross-section connection diagram is provided in the present application; Figure 8 A pressure spray drying tower circulating air filter device moving plate another angle cross-section connection diagram is provided in the present application; Figure 9 A pressure spray drying tower circulating air filter device rotating plate and sliding plate top view connection diagram is provided in the present application; Figure 10 A pressure spray drying tower circulating air filter device sliding groove cross-section connection diagram is provided in the present application; Figure 11 A pressure spray drying tower circulating air filter device rotating plate and sliding plate connection diagram is provided in the present application; Figure 12 A pressure spray drying tower circulating air filter device cleaning plate and moving plate connection diagram is provided in the present application; Figure 13 A pressure spray drying tower circulating air filter device fourth connecting plate structure diagram is provided in the present application.

[0013] In the figure: 1 tower body, 2 circulating pipe, 3 filter assembly, 31 shell, 32 fixed rod, 33 filter plate, 401 moving plate, 402 sliding rod, 403 sliding block, 404 motor, 405 fourth connecting plate, 406 rack, 407 gear, 408 tensioning assembly, 4081 first connecting plate, 4082 first spring, 4083 second connecting plate, 4084 second connecting rod, 409 rotating shaft, 410 pulley assembly, 411 rotating rod, 412 rotating cylinder, 413 cleaning cloth, 414 square rod, 415 sliding groove, 416 sliding plate, 417 protrusion, 418 first connecting rod, 419 third spring, 420 reciprocating screw rod, 5 control assembly, 501 cleaning plate, 502 third connecting plate, 503 rotating plate, 504 groove, 505 round rod, 506 second spring, 507 cleaning groove, 508 baffle, 509 contact rod, 510 contact switch. DETAILED DESCRIPTION

[0014] Reference Figures 1-13The utility model provides a pressure spray drying tower circulating air filter device, including tower body 1, circulating pipe 2 and fixed installation in circulating pipe 2 end filter assembly 3, the outside fixed connection of tower body 1 has support, the outside fixed connection of tower body 1 has circulating pipe 2, circulating pipe 2 is located the outside fixed installation of tower body 1 one-way control valve, one-way control valve and support fixed connection, the outside fixed installation of support has control system, circulating pipe 2 and control system fixed connection; First, when needing to utilize tower body 1 to work, open one-way control valve through control system, and provide pressure for circulating pipe 2, and then form circulating system, keep the normal working pressure of tower body 1 inside, above all are prior art, do not make superfluous repetition; As Figure 3 、 Figure 4 , filter assembly 3 includes shell 31, filter plate 33, circulating pipe 2 is through shell 31 and shell 31 fixed connection, the outside fixed installation of shell 31 has multiple fixed rod 32, the number of filter plate 33 is multiple, multiple filter plate 33 is slidably installed in shell 31 inside, shell 31 is installed with the cleaning assembly of filter plate 33, in the process of utilizing circulating pipe 2 to circulate, the air in tower body 1 is passed through fixed rod 32, filter plate 33 and enters circulating pipe 2, and then form circulating system, keep the normal working pressure of tower body 1 inside, above all are prior art, do not make superfluous repetition.

[0015] As Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 10The cleaning assembly comprises a rotating cylinder 412 and a cleaning cloth 413 wrapped outside the rotating cylinder 412, a plurality of slide rods 402 are fixedly installed in the shell 31, the number of each group of slide rods 402 is two, and the two slide rods 402 are located on the two sides of the filter plate 33 respectively, a sliding block 403 is slidably connected to each slide rod 402, a moving plate 401 is fixedly connected to the two sides of the sliding block 403, the moving plates 401 on the adjacent two sliding blocks 403 are fixedly connected through a first connecting rod 418, so that the plurality of moving plates 401 can move synchronously, a rotating shaft 409 is rotatably connected to the moving plate 401, a gear 407 is fixedly connected to one end of the rotating shaft 409, a plurality of racks 406 are fixedly connected in the shell 31, the plurality of racks 406 are divided into a plurality of groups, each group of racks 406 is arranged in one-to-one correspondence with the filter plate 33, the number of each group of racks 406 is four, the four racks 406 are symmetrically arranged on the two sides of the filter plate 33, the gear 407 is engaged with the rack 406, two sliding grooves 415 are symmetrically formed on one side of the moving plate 401 close to the filter plate 33, a square rod 414 is slidably connected in the two sliding grooves 415, a rotating rod 411 is rotatably connected between the square rods 414, the rotating rod 411 and the rotating shaft 409 are drivingly connected through a belt pulley assembly 410, the rotating cylinder 412 is fixedly connected with the rotating rod 411, a driving assembly for controlling the sliding block 403 to move up and down is installed in the shell 31, the driving assembly comprises a motor 404 fixedly installed in the shell 31, a reciprocating screw rod 420 is fixedly connected to the output end of the motor 404, a threaded block is threadedly sleeved outside the reciprocating screw rod 420, the threaded block is fixedly connected with one of the sliding blocks 403, a plurality of protrusions 417 are uniformly fixedly connected to the outside of the filter plate 33, and the plurality of protrusions 417 are located on the inside of the sliding block 403 and abut against the sliding block 403. Firstly, in the filtering process of the filter plate 33, the motor 404 is started, the motor 404 drives the reciprocating screw rod 420 to rotate, the reciprocating screw rod 420 drives the threaded block to move up and down, the threaded block drives the sliding block 403 to move up and down, and the sliding block 403 drives the moving plate 401 to move up and down. Since the rack 406 is in a fixed state, the rotating shaft 409 rotates during the up-and-down movement of the moving plate 401, the rotating shaft 409 drives the rotating rod 411 to rotate through the belt pulley assembly 410, and the rotating rod 411 drives the rotating cylinder 412 and the cleaning cloth 413 to rotate. When the cleaning cloth 413 abuts against the filter plate 33, the surface of the filter plate 33 is cleaned. When the circulating pipe 2 works in a circulating mode, the air in the tower body 1 enters the circulating pipe 2 through the filter plate 33. Since a large amount of dust exists in the air in the tower body 1, the dust is accumulated on the surface of the filter plate 33 under the blocking action of the filter plate 33. The cleaning cloth 413 cleans the dust, and the moving plate 401 moves up and down to clean the dust on the filter plate 33. Figure 5The direction is the basis, filter plate 33 and shell 31 left and right sliding connection, when the slider 403 and the convex 417, will cause the filter plate 33 relative to the shell 31 left and right movement, the convex 417 of filter plate 33 left and right sides are staggered, not symmetrical arrangement, so when the left slider 403 and the convex 417, will cause the filter plate 33 to move to the left, and then when the right slider 403 and the convex 417, will cause the filter plate 33 to move to the right, eventually lead to in the process of slider 403 movement, filter plate 33 will form left and right swing, prevent the possibility of large particle dust accumulation outside the filter plate 33, maintain the normal filtering effect of filter plate 33, but also can greatly improve the cleaning effect of cleaning cloth 413.

[0016] As Figure 9 , Figure 11 , Figure 12 , the moving plate 401 is provided with a control assembly 5 for controlling the movement of the rotating rod 411, the control assembly 5 comprises a sliding plate 416 and a rotating plate 503, the sliding plate 416 is fixedly sleeved outside the square rod 414, the rotating shaft 409 is fixedly sleeved with the rotating plate 503 outside, the moving plate 401 is fixedly connected with a baffle 508, the baffle 508 is located outside the cleaning cloth 413 and abuts against the cleaning cloth 413, a plurality of grooves 504 are circumferentially formed outside the rotating plate 503, the moving plate 401 is slidably connected with two groups of circular rods 505, the two groups of circular rods 505 are fixedly connected with a third connecting plate 502 below, the third connecting plate 502 and the moving plate 401 are fixedly connected with a second spring 506, the third connecting plate 502 is fixedly connected with a cleaning plate 501 outside, the cleaning plate 501 is provided with a cleaning groove 507 above, and the square rod 414 and the sliding groove 415 are fixedly connected with a third spring 419; In the process of rotating the rotating shaft 409, the rotating shaft 409 drives the rotating plate 503 to rotate, due to the special shape of the rotating plate 503, referring to the drawings Figure 9 The rotating plate 503 is composed of two circular plates with different diameters, in the process of rotating the rotating plate 503, when the sliding plate 416 and the smaller circular plate are opposite, the sliding plate 416 does not abut against the circular plate, at this time, the cleaning cloth 413 does not abut against the filter plate 33, and the cleaning cloth 413 abuts against the baffle 508, in the process of continuing to rotate the rotating plate 503, when the corner of the larger circular plate abuts against the sliding plate 416, the sliding plate 416 will be driven to move to the right as a whole (taking the left side as an example) Figure 11the direction of the arrow) until the outer circular surface of the larger circular plate and the sliding plate 416 are disconnected, at which time the sliding plate 416 as a whole moves to the left under the action of the stretched third spring 419 until the cleaning cloth 413 again abuts against the baffle 508, at which time the larger circular plate moves to the upper side of the circular rod 505 and abuts against the circular rod 505, and the circular rod 505 is driven to move downward. Since the outer side of the larger circular plate is uniformly provided with a plurality of groups of grooves 504, when the circular rod 505 moves into the grooves 504, the circular rod 505 moves upward under the action of the stretched second spring 506. In this process, the circular rod 505 always abuts against the outer circular surface of the larger circular plate or the inner wall of the grooves 504, thereby causing the circular rod 505 to always move up and down during the rotation of the larger circular plate. The circular rod 505 drives the cleaning plate 501 to move up and down through the third connecting plate 502. In the process of the upward and downward movement of the cleaning plate 501, since there is a certain temperature difference on both sides of the filter plate 33 during the working process of the circulating system, and the humidity inside the tower body 1 is large, a large amount of water droplets will exist on the surface of the filter plate 33. These water droplets and dust are wiped off by the cleaning cloth 413 and absorbed by the cleaning cloth 413. When the cleaning plate 501 and the cleaning cloth 413 abut against each other, an extrusion operation on the cleaning cloth 413 is formed, so that a certain amount of water droplets and dust in the cleaning cloth 413 are separated from the cleaning cloth 413, thereby entering the cleaning groove 507 along the inside of the cleaning groove 507, thereby keeping the cleaning cloth 413 in good cleaning effect. When the cleaning plate 501 and the cleaning cloth 413 are disconnected, the water droplet and dust mixture in the cleaning cloth 413 will not enter the cleaning groove 507.

[0017] As Figure 13 The lower side of the sliding block 403 is provided with a switch assembly, which comprises a fourth connecting plate 405, a contact switch 510 and a contact rod 509. The fourth connecting plate 405 is fixedly installed on the lower side of the sliding block 403. The number of the contact switches 510 is two, and the two contact switches 510 are fixedly connected with the fourth connecting plate 405. The lower side of the third connecting plate 502 is fixedly connected with the contact rod 509, and the contact rod 509 abuts against the contact switch 510. The cleaning groove 507 is inclinedly arranged. Firstly, the contact switch 510 is connected with the control system through wires. When the contact switch 510 is started, the contact switch 510 will send a signal, and the control system can transmit the signal to the worker. This is prior art and will not be described in detail. The cleaning groove 507 is inclinedly arranged. Figure 12In the perspective of the cleaning groove 507, the cleaning groove 507 is inclined front and back, that is, after the mixture of water droplets and dust falls into the cleaning groove 507, it will not be stored in the cleaning groove 507 all the time, but will flow out from both ends of the cleaning plate 501 along the cleaning groove 507. After the water droplets and dust fall into the cleaning groove 507, the overall weight of the cleaning plate 501 will increase in a short time, and if the weight increase is too large, the water droplets and dust falling into the cleaning groove 507 will take a long time to flow out, so that the contact rod 509 moving with the third connecting plate 502 cannot quickly return to the original position, that is, the contact switches 510 on both sides of the filter plate 33 start at different times, and there is a large gap between them. The larger the gap, the more water droplets and dust on the outside of the filter plate 33, which needs to be adjusted in time, thereby forming a certain reminder operation.

[0018] As Figure 8 The upper side of the moving plate 401 is provided with a tensioning assembly 408, the tensioning assembly 408 comprises a second connecting rod 4084, the second connecting rod 4084 is located on the inner side of the belt pulley assembly 410 and abuts against the belt pulley assembly 410, both ends of the second connecting rod 4084 are fixedly connected with a second connecting plate 4083, the second connecting plate 4083 penetrates through the moving plate 401 and is slidingly connected with the moving plate 401, the upper side of the second connecting plate 4083 is fixedly connected with a same first connecting plate 4081, a first spring 4082 is fixedly connected between the first connecting plate 4081 and the moving plate 401, under the action of the tensioning assembly 408, the belt pulley assembly 410 is always in a good transmission state, which is prior art and will not be described in detail.

[0019] In the present application, in the process of circulating treatment by the circulating pipe 2, the air in the tower body 1 enters the circulating pipe 2 through the fixed rod 32 and the filter plate 33, thereby forming a circulating system and maintaining the normal working pressure in the tower body 1, which are all prior art and will not be described in detail. During the filtration process of filter plate 33, motor 404 is started, which drives reciprocating screw 420 to rotate. Reciprocating screw 420 drives threaded block to move up and down, threaded block drives slider 403 to move up and down, slider 403 drives moving plate 401 to move up and down. Since rack 406 is in a fixed state, the up and down movement of moving plate 401 causes rotating shaft 409 to rotate. Rotating shaft 409 drives rotating rod 411 to rotate via pulley assembly 410. Rotating rod 411 drives rotating shaft 409 to rotate via pulley assembly 410. The rotating cylinder 412 and cleaning cloth 413 rotate. When the cleaning cloth 413 comes into contact with the filter plate 33, it cleans the surface of the filter plate 33. During the circulation of air through the circulation pipe 2, air inside the tower 1 enters the circulation pipe 2 through the filter plate 33. Since there is a large amount of dust inside the tower 1, this dust accumulates on the surface of the filter plate 33 due to the obstruction of the filter plate 33. The cleaning cloth 413 cleans the dust. Simultaneously, as the slider 403 moves up and down, it... Figure 5 Based on the direction, the filter plate 33 and the housing 31 are slidably connected. When the slider 403 and the protrusion 417 abut, the filter plate 33 moves left and right relative to the housing 31. The protrusions 417 on the left and right sides of the filter plate 33 are staggered, not symmetrical. Therefore, when the slider 403 on the left abuts the protrusion 417, the filter plate 33 moves to the left. Then, when the slider 403 on the right abuts the protrusion 417, the filter plate 33 moves to the right. Ultimately, during the movement of the slider 403, the filter plate 33 will sway left and right, preventing large dust particles from accumulating on the outside of the filter plate 33. While maintaining the normal filtration effect of the filter plate 33, it can also greatly improve the cleaning effect of the cleaning cloth 413. During the rotation of the rotating shaft 409, the rotating shaft 409 drives the rotating plate 503 to rotate. Due to the special shape of the rotating plate 503, which consists of two circular plates with different diameters, when the rotating plate 503 rotates, the sliding plate 416 does not abut against the smaller circular plate. At this time, the cleaning cloth 413 does not abut against the filter plate 33, but against the baffle 508. As the rotating plate 503 continues to rotate, when the corner of the larger circular plate abuts against the sliding plate 416, it will cause the sliding plate 416 to move to the right (within a certain range). Figure 11the direction of the arrow), until the outer circular surface of the larger circular plate and the sliding plate 416 are disconnected, at which point the sliding plate 416 as a whole moves to the left under the action of the stretched third spring 419 until the cleaning cloth 413 again abuts against the baffle 508, at which point the larger circular plate moves to the upper side of the circular rod 505 and abuts against the circular rod 505, and the circular rod 505 moves downward, because the outer side of the larger circular plate is uniformly provided with a plurality of grooves 504, when the circular rod 505 moves into the groove 504, the circular rod 505 moves upward under the action of the stretched second spring 506, in the process, the circular rod 505 always abuts against the outer circular surface of the larger circular plate or the inner wall of the groove 504, thereby causing the circular rod 505 to move up and down during the rotation of the larger circular plate, the circular rod 505 drives the cleaning plate 501 to move up and down through the third connecting plate 502, in the process of the movement of the cleaning plate 501 up and down, because there is a certain temperature difference on both sides of the filter plate 33 during the operation of the circulating system, and the humidity inside the tower body 1 is large, therefore, there is a large amount of water droplets on the surface of the filter plate 33, which are mixed with dust and wiped off by the cleaning cloth 413, and are absorbed by the cleaning cloth 413, when the cleaning plate 501 and the cleaning cloth 413 abut, an extrusion operation on the cleaning cloth 413 is formed, so that a certain amount of water droplets and dust in the cleaning cloth 413 are separated from the cleaning cloth 413, and then enter the cleaning groove 507 along the inside of the cleaning groove 507, thereby keeping the cleaning cloth 413 in good cleaning effect, When the cleaning plate 501 and the cleaning cloth 413 are disconnected, the water droplets and dust mixture in the cleaning cloth 413 will not enter the cleaning groove 507, when the contact switch 510 is started, the contact switch 510 will send a signal, which can be transmitted to the worker by the control system, which is prior art and will not be described in detail, The cleaning groove 507 is inclinedly arranged, in the perspective of Figure 12 The cleaning groove 507 is inclined from front to back, that is, after the mixture of water droplets and dust falls into the cleaning groove 507, it will not be stored in the cleaning groove 507 all the time, but will flow out from both ends of the cleaning plate 501 along the cleaning groove 507, after the water droplets and dust fall into the cleaning groove 507, the weight of the cleaning plate 501 as a whole will increase in a short time, if the weight increases too much, the water droplets and dust falling into the cleaning groove 507 will take a long time to flow out, therefore, the contact rod 509 moving with the third connecting plate 502 cannot quickly return to the original position, that is, the contact switches 510 on both sides of the filter plate 33 are started at different times, and there is a large gap between them, the larger the gap, the more water droplets and dust on the outside of the filter plate 33, which needs to be adjusted in time, thereby forming a certain reminding operation.

Claims

1. A circulating air filter device for a pressure spray drying tower, comprising a tower body (1), a circulating pipe (2) and a filter assembly (3) fixedly installed at the end of the circulating pipe (2), characterized in that, The filtering assembly (3) includes a shell (31), a filtering plate (33), the circulating pipe (2) penetrates the shell (31) and is fixedly connected with the shell (31), a plurality of groups of fixing rods (32) are fixedly installed on the outer side of the shell (31), the number of the filtering plate (33) is multiple, a plurality of the filtering plate (33) is slidingly installed in the shell (31), a cleaning assembly for the filtering plate (33) is installed in the shell (31), the cleaning assembly includes a rotating cylinder (412) and a cleaning cloth (413) wrapped outside the rotating cylinder (412), a plurality of groups of slide rods (402) are fixedly installed in the shell (31), the slide rod (402) is slidingly connected with a sliding block (403), the sliding block (403) is fixedly connected with a moving plate (401) on both sides, the moving plate (401) on the adjacent two sliding blocks (403) is fixedly connected through a first connecting rod (418), the moving plate (401) is rotatably connected with a rotating shaft (409), one end of the rotating shaft (409) is fixedly connected with a gear (407), a plurality of groups of racks (406) are fixedly connected in the shell (31), the gear (407) and the rack (406) are engaged, the moving plate (401) is provided with a sliding groove (415), the sliding groove (415) is slidingly connected with a square rod (414), the square rod (414) is rotatably connected with a rotating rod (411), the rotating rod (411) and the rotating shaft (409) are drivingly connected through a belt pulley assembly (410), the rotating cylinder (412) is fixedly connected with the rotating rod (411), a driving assembly for controlling the sliding block (403) to move up and down is installed in the shell (31).

2. A pressure spray drying column circulating air filter apparatus as claimed in claim 1, wherein, The driving assembly includes a motor (404) fixedly installed in the shell (31), the output end of the motor (404) is fixedly connected with a reciprocating screw rod (420), the outer side of the reciprocating screw rod (420) is threadedly sleeved with a threaded block, and the threaded block is fixedly connected with one of the sliding blocks (403).

3. A pressure spray drying column circulating air filter apparatus as claimed in claim 2, wherein, The moving plate (401) is internally provided with a control assembly (5) for controlling the movement of the rotating rod (411), the control assembly (5) comprises a sliding plate (416) and a rotating plate (503), the sliding plate (416) is fixedly sleeved outside the square rod (414), the rotating shaft (409) is fixedly sleeved with the rotating plate (503) outside, the moving plate (401) is fixedly connected with a baffle (508), a plurality of groups of grooves (504) are circumferentially formed outside the rotating plate (503), the moving plate (401) is slidably connected with two groups of circular rods (505) on the lower side, the lower side of the two groups of circular rods (505) is fixedly connected with a third connecting plate (502), the third connecting plate (502) and the moving plate (401) are fixedly connected with a second spring (506), the third connecting plate (502) is fixedly connected with a cleaning plate (501), the upper side of the cleaning plate (501) is provided with a cleaning groove (507), and the square rod (414) and the sliding groove (415) are fixedly connected with a third spring (419).

4. A pressure spray drying column circulating air filter apparatus as claimed in claim 3 wherein, The lower side of the sliding block (403) is provided with a switch assembly, the switch assembly comprises a fourth connecting plate (405), a contact switch (510) and a contact rod (509), the fourth connecting plate (405) is fixedly installed on the lower side of the sliding block (403), the number of the contact switch (510) is two, the two contact switches (510) and the fourth connecting plate (405) are fixedly connected, the lower side of the third connecting plate (502) is fixedly connected with the contact rod (509), and the contact rod (509) and the contact switch (510) are in abutment.

5. A pressure spray drying column circulating air filter apparatus as defined in claim 2 wherein, The upper side of the moving plate (401) is provided with a tensioning assembly (408), the tensioning assembly (408) comprises a second connecting rod (4084), the second connecting rod (4084) is located inside the belt pulley assembly (410) and abuts against the belt pulley assembly (410), both ends of the second connecting rod (4084) are fixedly connected with a second connecting plate (4083), the second connecting plate (4083) penetrates through the moving plate (401) and is slidably connected with the moving plate (401), the upper side of the second connecting plate (4083) is fixedly connected with a same first connecting plate (4081), and the first connecting plate (4081) and the moving plate (401) are fixedly connected with a first spring (4082).

6. A pressure spray drying column circulating air filter apparatus as defined in claim 1 wherein, The outer side of the filter plate (33) is uniformly fixedly connected with a plurality of groups of protrusions (417), and the plurality of groups of protrusions (417) are located inside the sliding block (403) and abut against the sliding block (403).

7. A circulating air filter for a pressure spray drying column according to claim 3, wherein The cleaning groove (507) is inclined.

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