CN111888864A - Cloth net integral type dust remover with end-stopping function - Google Patents

Abstract

The invention discloses a cloth-net integrated dust remover with a non-return function, which comprises a dust removing frame body, wherein fixing flanges at the bottom and the top of the dust removing frame body are hermetically wrapped and connected with a dust removing bag body, an auxiliary air inlet pipe is fixedly connected at the bottom, and a cover plate at the top is communicated with a blowing pipe and a thick-wall piston cylinder; the thick-wall piston cylinder extends into the rotary cylinder body, the bottom of the rotary cylinder body is sleeved with the thick-wall piston cylinder through a sealing bearing I, and the top of the rotary cylinder body is connected with the four-way chamber through a sealing bearing II; the top wall of the four-way chamber is connected with the recoil pump and the suction pump through a three-way valve I, and the bottom of the four-way chamber is connected with the exhaust pump through an exhaust pipe; the thick-wall piston cylinder is provided with a piston rod and a spiral inclined pipe, and the rotary cylinder body is provided with an inclined plate, an overflow pipe and a three-way valve II. The invention forms a pneumatic jacking structure through the thick-wall piston cylinder with the spiral inclined tube and the piston rod, so that dust-containing gas can only reach the rotary cylinder body from the dust removal bag body to conduct in a single direction, the non-return function when various states change instantly is realized, bag type dust removal and bubbling dust removal are combined, and the dust removal efficiency is improved.

Description

Cloth net integral type dust remover with end-stopping function

Technical Field

The invention relates to the technical field of dust collectors, in particular to a cloth-net integrated dust collector with a non-return function.

Background

The bag type dust collector mainly comprises an upper box body, a middle box body, a lower ash bucket, an ash removal system, an ash discharge mechanism and the like. The performance of the bag type dust collector is good, and besides the correct selection of the material of the filter bag, the ash removal system plays a decisive role in the bag type dust collector. For this reason, the ash removal method is one of the characteristics of the bag-type dust collector and is also an important part in the operation of the bag-type dust collector.

The existing bag type dust collector mainly adopts an air suction-blowing-dust collection method, in the actual working process, the dust collection process and the dust collection process are frequently required to be alternately operated, because the instantaneous change of air pressure easily causes the phenomenon of gas suck-back or flow-back, the valve is closed untimely, the gas which is subjected to dust collection and the gas which is not subjected to full dust collection are mixed again, the existing bag type dust collector excessively depends on the accuracy of each valve control system, the cost of the whole bag type dust collector is higher, the overhauling and replacing processes are complex, and the improvement is needed urgently.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a cloth-net integrated dust remover with a non-return function.

In order to achieve the purpose, the invention adopts the following technical scheme:

a cloth-net integrated dust remover with a non-return function comprises a dust removing frame body, wherein fixing flanges are fixedly arranged at the bottom and the top of the dust removing frame body, the fixing flanges at the bottom and the top of the dust removing frame body are hermetically connected with dust removing bag bodies and used for fixing the dust removing frame body, an auxiliary air inlet pipe is fixedly connected to an inner ring of the fixing flange at the bottom of the dust removing frame body, a cover plate is fixedly connected to an inner ring of the fixing flange at the top of the dust removing frame body, the cover plate is communicated with a blowing pipe, a thick-wall piston cylinder is arranged on the upper surface of the cover plate through a support plate fixing frame, the bottom of the thick-wall piston cylinder is;

the top end of a thick-wall piston cylinder extends into a rotary cylinder body, the rotary cylinder body is a reducing cylinder body, the upper part and the lower part of the reducing cylinder body have the same diameter and are smaller than the diameter of the middle part, the bottom end face of the rotary cylinder body is fixedly connected with a sealing bearing I, the lower part of the outer wall of the thick-wall piston cylinder body is provided with a shaft shoulder which is movably sleeved with the inner wall of the sealing bearing I, the top end face of the rotary cylinder body is movably sleeved with a sealing bearing II, the sealing bearing II is fixedly connected with a four-way chamber, the bottom of the four-way chamber is provided with a circular through hole which is communicated with the rotary cylinder body, the top wall of the four-way chamber is communicated with a three-way valve I through a pipeline, the second end of the three-way valve I is communicated with a recoil pump through a pipeline, the third end of the three-way valve I is communicated with an air suction pump through a pipeline, the top end of a blowing pipe is communicated, the air suction pump is responsible for completely pumping the air in the four-way chamber;

the top surface edge of the thick-wall piston cylinder is connected with a piston rod through a tension spring, the top end of the piston rod is provided with a stop block, gaps are arranged between the periphery of the stop block at the top end of the piston rod and the inner wall of the rotary cylinder body and the inner wall of the four-way chamber so as to allow gas to freely enter and exit the rotary cylinder body and the four-way chamber, the top end of the tension spring is fixedly connected to the bottom surface of the stop block, the bottom end of the piston rod is hermetically sleeved in the thick-wall piston cylinder, spiral inclined pipes are arranged at equal intervals on the pipe wall part of the thick-wall piston cylinder, which extends into the rotary cylinder body, the spiral inclined pipes are semi-circularly spiral, the higher end openings of the spiral inclined pipes are flush with the inner wall of the thick-wall piston cylinder, the lower end openings of the spiral inclined pipes extend out of the thick-wall piston cylinder and are tangent to the cylindrical, the length of the inclined plate is 15-25 cm;

the piston rod slides and rises in the thick-wall piston cylinder, the highest position of the bottom end of the piston rod is higher than the opening at the higher end of the spiral inclined tube at the uppermost layer, and the bottommost position of the bottom end of the piston rod is lower than the opening at the higher end of the spiral inclined tube at the bottommost layer, so that the piston rod rises to prevent the spiral inclined tube from giving vent gas during dust removal, and the piston rod blocks the spiral inclined tube in time under the action of elastic tension during blowing so as to avoid blowing water in the rotary cylinder into a dust removal bag body;

the dust-containing gas in the dust-removing bag body is sprayed to the inclined plate through the spiral inclined pipes to cause the rotation of the rotary cylinder body, when water is filled in the rotary cylinder body and the liquid level submerges all the spiral inclined pipes, the high-pressure sprayed dust-containing gas is changed into the tangential direction through the spiral inclined pipes and is sprayed to the inclined plate to drive the inclined plate and the rotary cylinder body to rotate so as to drive the water body to flow, a similar water film-shaped vortex under stirring is generated, the dust-containing gas fully absorbs the dust part through bubbling and collision of the vortex water body, and the dust-removing process similar to the water film is achieved;

the middle part of the side wall of the rotary barrel is communicated with an overflow pipe, an outlet pipe at the bottom of the side wall of the rotary barrel is communicated with a three-way valve II, the overflow pipe is communicated with the second end of the three-way valve II, most of the overflow pipe is in a vertical transparent tubular shape, so that the overflow pipe can be used as a visual liquid level meter for observing the liquid level in the rotary barrel, the speed of the liquid level change of the overflow pipe can be used for estimating the turbulence degree of the fluid in the rotary barrel when the rotary barrel rotates, and the third end of the three-way valve II is used for discharging;

the lower part of the side wall of the four-way chamber is communicated with an exhaust pipe, and the exhaust pipe is connected with an exhaust pump and used for assisting in exhausting when the air inlet pressure in the dust removal bag body is insufficient.

Preferably, the tension spring is a phi 3-phi 5 high-strength zinc-plated tension spring, the length deformation amount is 1-50 times, and the tension spring is used for automatically returning the piston rod.

Preferably, the thick-wall piston cylinder is made of quartz tube with a mirror surface smooth inside, so that the piston rod can slide and seal conveniently.

Preferably, the auxiliary intake pipe and the exhaust pipe are both provided with electromagnetic valves.

According to the structure, the invention also provides a corresponding use method of the cloth-net integrated dust remover with the non-return function, which comprises the following steps:

a. and (3) dust removal state: the cloth net integrated dust remover with the non-return function is placed in a dust removing chamber or a dust removing bin, the air pressure of dust-containing gas is controlled to be 0.5-0.8MPa, an auxiliary air inlet pipe and an exhaust pipe are opened, a port of a three-way valve I connected with a recoil pump and an air suction pump is closed, a water pump is connected with a three-way valve II, water is filled into a rotary cylinder until the water level accounts for 60-70% of the height of the vertical section of an overflow pipe, all spiral inclined pipe outlets are submerged by the initial liquid level, an auxiliary air pump can be connected from the end of the auxiliary air inlet pipe, the air pressure of clean air introduced by the auxiliary air pump is 0.15-0.2MPa, the dust-containing gas is filtered by a dust removing bag body and then enters a thick-wall piston cylinder, a piston rod is quickly jacked up, the dust-containing gas is sprayed onto an inclined plate through the spiral inclined pipes to cause the rotation of the rotary cylinder to drive the water body, the dust part is fully absorbed to achieve the process similar to the water film dedusting;

b. and (3) an air suction state: closing an air inlet pipeline of a dust removal chamber or a dust removal bin, immediately closing an auxiliary air inlet pipe and an exhaust pipe after dust removal, opening a port of a three-way valve I connected with an air suction pump, reducing the air pressure in a dust removal bag body and the dust removal bin to be minimum through air pressure difference, wherein the vacuum degree is 0.08MPa, the volume of the dust removal bag body is minimum, the air pressure is minimum, the air suction state starts bubbling to be greatly increased and is gradually stable, and finally, the bubbling state is basically not generated, so that the process is finished;

c. blowing state: closing a port of a three-way valve I connected with an air suction pump, immediately opening the port of the three-way valve I connected with a backflushing pump, opening the backflushing pump to enable the air inlet pressure to reach 0.7-0.9MPa, rapidly pushing a piston rod to the lowest position to prevent liquid from flowing backwards to a dust removal bag body, rapidly blowing gas into the dust removal bag body through one-way conduction of a blowing pipe, wherein the volume of the dust removal bag body is near the maximum value, the volume of the dust removal bag body suddenly changes, dust adhered to the outer wall of the dust removal bag body is shaken off, and the dust shaking process of a bag is realized;

d. blowing state: and (c) repeating the steps a, b and c in sequence, and controlling the time occupation ratio of the steps a, b and c to be 50-60:1:1, thus finishing the dust removal-air suction-blowing process of the dust-containing gas.

Compared with the prior art, the invention has the beneficial effects that:

the invention forms an air pressure jacking structure through the thick-wall piston cylinder with the spiral inclined tube and the piston rod, unidirectionally guides dust-containing gas filtered by the dust removal bag body into the rotary cylinder, and rotates the rotary cylinder and water fluid in the rotary cylinder at high speed under the action of air flow to generate a stirring vortex-shaped water film, and the dust-containing gas fully absorbs dust parts through bubbling and collision of vortex water bodies to achieve a dust removal process similar to the water film; when the device enters a bubbling state, the blowing air pressure and the tension of the tension spring cause the piston rod to rapidly descend so as to seal a passage between the thick-wall piston cylinder and the dust removal bag body, and in the changing process of the three states of dust removal, air suction and blowing, bubbling water film dust removal is carried out, so that the dust removal efficiency is further improved;

the invention can lead the dust-containing gas to be conducted in one way only from the dust-removing bag body to the rotary cylinder body, thus realizing the non-return function when various states change instantly at first, organically combining the bag type dust removal and the bubbling dust removal on the basis, and avoiding the situation that the water body flows backwards to wet the dust-removing bag body.

Drawings

FIG. 1 is a schematic structural view of a cloth-net integrated dust collector with a non-return function according to the present invention;

FIG. 2 is a view showing the internal structure of a rotary cylinder of the cloth-net integrated dust collector with a non-return function according to the present invention;

FIG. 3 is a schematic structural view of a cloth-net integrated dust remover with a non-return function in a dust removing state according to the present invention;

FIG. 4 is a schematic structural view of a cloth-net integrated dust collector with a non-return function in a suction state according to the present invention;

FIG. 5 is a schematic structural view of a cloth-net integrated dust collector with a non-return function in a blowing state according to the present invention;

in the figure: the device comprises a dust removing frame body 1, a fixed flange 2, an auxiliary air inlet pipe 3, a cover plate 4, a blowing pipe 5, a support plate 6, a thick-wall piston cylinder 7, a rotary cylinder body 8, a sealing bearing I9, a sealing bearing II10, a four-way chamber 11, a three-way valve I12, a recoil pump 13, an air suction pump 14, a check valve 15, a dust removing bag body 16, a tension spring 17, a piston rod 18, a spiral inclined pipe 19, an inclined plate 20, an overflow pipe 21, an outlet pipe 22, a three-way valve II23, an exhaust pipe 24 and an exhaust.

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.

Referring to fig. 1-2, a cloth net integrated dust remover with non-return function comprises a dust removing frame body 1, wherein fixing flanges 2 are fixedly arranged at the bottom and the top of the dust removing frame body 1, the fixing flanges 2 at the bottom and the top of the dust removing frame body 1 are hermetically connected with a dust removing bag body 16 for fixing the dust removing frame body 1, an auxiliary air inlet pipe 3 is fixedly connected to the inner ring of the fixing flange 2 at the bottom of the dust removing frame body 1, a cover plate 4 is fixedly connected to the inner ring of the fixing flange 2 at the top of the dust removing frame body 1, the cover plate 4 is communicated with a drum blowing pipe 5, a thick-wall piston cylinder 7 is arranged on the upper surface of the cover plate 4 through a supporting plate 6, a thick-wall piston cylinder 7 is fixedly arranged on the upper surface; the top end of a thick-wall piston cylinder 7 extends into a rotary cylinder body 8, the rotary cylinder body 8 is a variable-diameter cylinder body with the upper part and the lower part having the same diameter and smaller than the diameter of the middle part, the bottom end face of the rotary cylinder body 8 is fixedly connected with a sealing bearing I9, the lower part of the outer wall of the thick-wall piston cylinder 7 is provided with a shaft shoulder which is movably sleeved with the inner wall of the sealing bearing I9, the top end face of the rotary cylinder body 8 is movably sleeved with a sealing bearing II10, a four-way chamber 11 is fixedly connected with a sealing bearing II10, the bottom of the four-way chamber 11 is provided with a circular through hole which is communicated with the rotary cylinder body 8, the top wall of the four-way chamber 11 is communicated with a three-way valve I12 through a pipeline, the second end of the three-way valve I12 is communicated with a recoil pump 13 through a pipeline, the third end of the three-way valve I12 is communicated with an air suction pump 14, the gas is introduced into the four-way chamber 11 by the recoil pump 13 and enters the dust removal bag body 16 through the blowing pipe 5 for blowing and ash removal, and the gas in the four-way chamber 11 is completely pumped by the air suction pump 14; the top surface edge of the thick-wall piston cylinder 7 is connected with a piston rod 18 through a tension spring 17, the top end of the piston rod 18 is provided with a stop block, gaps are arranged between the periphery of the stop block at the top end of the piston rod 18 and the inner wall of the rotary cylinder 8 and the inner wall of the four-way chamber 11 so as to allow gas to freely enter and exit from the rotary cylinder 8 and the four-way chamber 11, the top end of the tension spring 17 is fixedly connected to the bottom surface of the stop block, the bottom end of the piston rod 18 is hermetically sealed and connected in the thick-wall piston cylinder 7, spiral inclined pipes 19 are equidistantly arranged on the pipe wall part of the thick-wall piston cylinder 7 extending into the rotary cylinder 8, the spiral inclined pipes 19 are semi-circularly spiral, the opening at the higher end of the spiral inclined pipes 19 is flush with the inner wall of the thick-wall piston cylinder 7, the opening at the lower end of the spiral inclined pipes 19 extends, the distance between the inner wall of the lower part of the rotary cylinder body 8 and the outer wall of the thick-wall piston cylinder 7 is 20-30cm, and the length of the inclined plate 20 is 15-25 cm; the piston rod 18 slides and rises in the thick-wall piston cylinder 7, the highest position of the bottom end of the piston rod 18 is higher than the opening at the higher end of the spiral inclined tube 19 at the uppermost layer, and the bottommost position of the bottom end of the piston rod 18 is lower than the opening at the higher end of the spiral inclined tube 19 at the bottommost layer, so that the piston rod 18 rises to not block the air outlet of the spiral inclined tube 19 during dust removal, and the piston rod 18 timely blocks the spiral inclined tube 19 under the action of elastic tension during blowing so as to avoid blowing water in the rotary cylinder 8 into the dust removal bag body 16; the dust-containing gas in the dust-removing bag body 16 is sprayed to the inclined plate 20 through the spiral inclined tube 19 to cause the rotation of the rotary cylinder body 8, when water is filled in the rotary cylinder body 8 and the liquid level submerges all the spiral inclined tubes 19, the high-pressure sprayed dust-containing gas is changed into a tangential direction through the spiral inclined tubes 19 and is sprayed to the inclined plate 20 to drive the inclined plate 20 and the rotary cylinder body 8 to rotate, so that the water body is driven to flow, a similar water film-shaped vortex is generated under stirring, the dust-containing gas fully absorbs dust parts through bubbling and the collision of the vortex water body, and a similar water film dust-removing process is achieved; the middle part of the side wall of the rotary cylinder body 8 is communicated with an overflow pipe 21, an outlet pipe 22 at the bottom of the side wall of the rotary cylinder body 8 is communicated with a three-way valve II23, the overflow pipe 21 is communicated with a second end of a three-way valve II23, most of the overflow pipe 21 is in a vertical transparent tubular shape, so that the overflow pipe can be used as a visual liquid level meter for observing the liquid level in the rotary cylinder body 8, the speed of the liquid level change of the overflow pipe 21 can be used for estimating the turbulence degree of fluid in the rotary cylinder body 8 when the rotary cylinder body 8 rotates, and a third end of the three; an exhaust pipe 24 is communicated with the lower part of the side wall of the four-way chamber 11, and an exhaust pump 25 is connected with the exhaust pipe 24 and is used for assisting exhaust when the air inlet pressure in the dust collection bag body 16 is insufficient.

Referring to fig. 1-2, the tension spring 17 is a high strength zinc-plated tension spring of a type Φ 3- Φ 5, the length deformation amount is 1-50 times, and the tension spring 17 is used for automatic return of the piston rod 18.

Referring to fig. 1-2, the thick-walled piston cylinder 7 is made of quartz tube with a smooth mirror surface inside for facilitating the sliding and sealing of the piston rod 18.

Referring to fig. 1-2, the auxiliary intake 3 and exhaust 24 pipes are each provided with a solenoid valve.

According to the structure, the invention also provides a corresponding use method of the cloth-net integrated dust remover with the non-return function, which comprises the following steps:

a. and (3) dust removal state: referring to fig. 3, the cloth-net integrated dust remover with non-return function is placed in a dust chamber or a dust removing bin, the air pressure of dust-containing gas is controlled to be 0.5-0.8MPa, an auxiliary air inlet pipe 3 and an exhaust pipe 24 are opened, the port of a three-way valve I12 connected with a recoil pump 13 and an air suction pump 14 is closed, a water pump is connected with a three-way valve II23, water is filled into a rotary cylinder 8 until the water level accounts for 60-70% of the height of the vertical section of an overflow pipe 21, at the moment, all spiral inclined pipes 19 are submerged by the initial liquid level, at the moment, an auxiliary air pump can be connected from the end of the auxiliary air inlet pipe 3, the air pressure of clean air introduced by the auxiliary air pump is 0.15-0.2MPa, the dust-containing gas is filtered by a dust removing bag body 16 and then enters a thick-wall piston cylinder 7, a piston rod 22 is quickly jacked up, so that, generating a stirring vortex-shaped water film, and fully absorbing the dust part of the dust-containing gas through bubbling and collision of a vortex water body to achieve a dust removal process similar to the water film;

b. and (3) an air suction state: referring to fig. 4, the air inlet pipeline of the dust removal chamber or the dust removal bin is closed, the auxiliary air inlet pipe 3 and the exhaust pipe 24 are immediately closed after dust removal, the port of the three-way valve I12 connected with the air suction pump 14 is opened, the air pressure in the dust removal bag body 16 and the dust removal bin is reduced to the minimum through the air pressure difference, the vacuum degree is 0.08MPa, at the moment, the volume of the dust removal bag body 16 is the minimum, the air pressure is the minimum, the air suction state starts to bubble greatly increase and is gradually stable, and finally, the bubbling state is basically not generated, so that;

c. blowing state: referring to fig. 5, a port of a three-way valve I12 connected with an aspirator pump 14 is closed, a port of a three-way valve I12 connected with a backflushing pump 13 is immediately opened, the backflushing pump 13 is opened, the air inlet pressure reaches 0.7-0.9MPa, the piston rod 22 is rapidly pushed to the lowest position, liquid is prevented from flowing backwards to the dust removal bag body 16, the gas is rapidly blown into the dust removal bag body 16 through the unidirectional conduction of the blowing pipe 5, the volume of the dust removal bag body 16 is near the maximum value, the volume of the dust removal bag body 16 is suddenly changed, dust adhered on the outer wall of the dust removal bag body 16 is shaken off, and the;

d. blowing state: and (c) repeating the steps a, b and c in sequence, and controlling the time occupation ratio of the steps a, b and c to be 50-60:1:1, thus finishing the dust removal-air suction-blowing process of the dust-containing gas.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (5)

1. A cloth-net integrated dust remover with a non-return function comprises a dust removing frame body (1), it is characterized in that the bottom and the top of the dust removing frame body (1) are fixedly provided with fixed flanges (2), the fixed flanges (2) at the bottom and the top of the dust removing frame body (1) are hermetically connected with a dust removing bag body (16), an auxiliary air inlet pipe (3) is fixedly connected with the inner ring of a fixed flange (2) at the bottom of the dust removing frame body (1), a cover plate (4) is fixedly connected with the inner ring of the fixed flange (2) at the top of the dust removing frame body (1), the cover plate (4) is communicated with a blowing pipe (5), the upper surface of the cover plate (4) is provided with a thick-wall piston cylinder (7) through a supporting plate (6) fixing frame, the bottom of the thick-wall piston cylinder (7) is fixedly connected on the upper surface of the cover plate (4) in a sealing way, the cover plate (4) is provided with a through hole communicated with the bottom opening of the thick-wall piston cylinder (7);

the top end of the thick-wall piston cylinder (7) extends into the rotary cylinder body (8), the rotary cylinder body (8) is a reducing cylinder body with the upper portion and the lower portion being equal in diameter and smaller than the diameter of the middle portion, a sealing bearing I (9) is fixedly connected to the bottom end face of the rotary cylinder body (8), a shaft shoulder portion movably sleeved with the inner wall of the sealing bearing I (9) is arranged at the lower portion of the outer wall of the thick-wall piston cylinder (7), a sealing bearing II (10) is movably sleeved on the top end face of the rotary cylinder body (8), a four-way chamber (11) is fixedly connected to the sealing bearing II (10), a circular through hole communicated with the rotary cylinder body (8) is formed in the bottom of the four-way chamber (11), a three-way valve I (12) is communicated to the top wall of the four-way chamber (11) through a pipeline, a recoil pump (13) is communicated to the second end of the three-way valve I (12) through, the top end of the blowing pipe (5) is communicated with the top position of the side wall of the four-way chamber (11), a check valve (15) is arranged in the blowing pipe (5), and the circulating direction of the blowing pipe (5) is from the four-way chamber (11) to the dust removal bag body (16);

the top surface border of thick wall piston cylinder (7) is connected with piston rod (18) through extension spring (17), the dog is established on the top of piston rod (18), the dog on piston rod (18) top all around with rotatory barrel (8) inner wall and cross room (11) inner wall between all gapped to for the gas freely pass in and out at rotatory barrel (8) and cross room (11), extension spring (17) top rigid coupling is in on the bottom surface of dog, piston rod (18) bottom seal cup joints in thick wall piston cylinder (7), the pipe wall part equidistance that thick wall piston cylinder (7) stretched into rotatory barrel (8) inside is provided with spiral pipe chute (19), spiral pipe chute (19) are half circumference heliciform, the higher one end opening part of spiral pipe chute (19) flushes with thick wall piston cylinder (7) inner wall, the lower one end opening part of spiral pipe (19) stretches out outside piston cylinder (7) and tangent with piston cylinder (7) thick wall cylinder, inclined plates (20) are fixedly arranged on the inner wall of the lower part of the rotary cylinder body (8) at equal intervals, an opening at the lower end of the spiral inclined pipe (19) vertically faces the surface of the inclined plates (20), the distance between the inner wall of the lower part of the rotary cylinder body (8) and the outer wall of the thick-wall piston cylinder (7) is 20-30cm, and the length of each inclined plate (20) is 15-25 cm;

the piston rod (18) slides and rises in the thick-wall piston cylinder (7), the highest position of the bottom end of the piston rod (18) is higher than the opening at the higher end of the spiral inclined tube (19) at the uppermost layer, and the lowest position of the bottom end of the piston rod (18) is lower than the opening at the higher end of the spiral inclined tube (19) at the lowermost layer;

an overflow pipe (21) is communicated with the middle part of the side wall of the rotary cylinder body (8), an outlet pipe (22) at the bottom of the side wall of the rotary cylinder body (8) is communicated with a three-way valve II (23), the overflow pipe (21) is communicated with the second end of the three-way valve II (23), most of the overflow pipe (21) is in a vertical transparent tubular shape, and the third end of the three-way valve II (23) is used for discharging sewage;

the lower part of the side wall of the four-way chamber (11) is communicated with an exhaust pipe (24), and the exhaust pipe (24) is connected with an exhaust pump (25) and used for assisting in exhausting when the air inlet pressure in the dust removal bag body (16) is insufficient.

2. The cloth-net integrated dust collector with the non-return function according to claim 1, wherein the tension spring (17) is a phi 3-phi 5 type high-strength galvanized tension spring, the length deformation amount is 1-50 times, and the tension spring (17) is used for automatically returning the piston rod (18).

3. The cloth-net integrated dust remover with non-return function as claimed in claim 1, characterized in that the thick-walled piston cylinder (7) is made of quartz tube with mirror surface smooth inside, which facilitates the sliding and sealing of the piston rod (18).

4. The cloth-net integrated dust remover with non-return function as claimed in claim 1, characterized in that the auxiliary air inlet pipe (3) and the air outlet pipe (24) are both provided with electromagnetic valves.

5. The use method of the cloth-net integrated dust remover with the non-return function according to claim 1 is characterized by comprising the following steps:

a. and (3) dust removal state: the cloth-net integrated dust remover with the non-return function of claim 1 is placed in a dust removing chamber or a dust removing bin, the air pressure of dust-containing gas is controlled to be 0.5-0.8MPa, an auxiliary air inlet pipe (3) and an air outlet pipe (24) are opened, the port of a three-way valve I (12) connected with a recoil pump (13) and an air suction pump (14) is closed, a water pump is connected through a three-way valve II (23), a water body is filled into a rotary cylinder body (8) until the water level accounts for 60-70% of the height of the vertical section of an overflow pipe (21), all spiral inclined pipes (19) are submerged at the initial liquid level, at the moment, an auxiliary air pump can be connected into the auxiliary air inlet pipe (3) end, the auxiliary air pump introduces clean air with the air pressure of 0.15-0.2MPa, the dust-containing gas enters a thick-wall piston cylinder (7) after being filtered by a dust removing bag body (16), a piston rod (22) is quickly jacked up, and the dust, the rotating cylinder (8) is rotated to drive the water body to flow, a stirring vortex-shaped water film is generated, dust-containing gas fully absorbs dust parts through bubbling and collision of vortex water bodies, and a dust removal process similar to the water film is achieved;

b. and (3) an air suction state: closing an air inlet pipeline of a dust removal chamber or a dust removal bin, immediately closing an auxiliary air inlet pipe (3) and an exhaust pipe (24) after dust removal, opening a port of a three-way valve I (12) connected with an air suction pump (14), reducing the air pressure in a dust removal bag body (16) and the dust removal bin to be minimum through air pressure difference, wherein the vacuum degree is 0.08MPa, the volume of the dust removal bag body (16) is minimum, the air pressure is minimum, the air suction state starts to bubble to be greatly increased and gradually stabilized, and finally, the bubble state is basically absent, namely the completion is completed;

c. blowing state: closing a port of a three-way valve I (12) connected with an air suction pump (14), immediately opening a port of the three-way valve I (12) connected with a backflushing pump (13), opening the backflushing pump (13) to enable the air inlet pressure to reach 0.7-0.9MPa, rapidly pushing a piston rod (22) to the lowest position, preventing liquid from flowing back to a dust removal bag body (16), rapidly blowing gas into the dust removal bag body (16) through one-way conduction of a blowing pipe (5), enabling the volume of the dust removal bag body (16) to be close to the maximum value, abruptly changing the volume of the dust removal bag body (16), enabling dust on the outer wall of the dust removal bag body (16) to be stuck and shaken off, and realizing a dust blowing and;

d. blowing state: and (c) repeating the steps a, b and c in sequence, and controlling the time occupation ratio of the steps a, b and c to be 50-60:1:1, thus finishing the dust removal-air suction-blowing process of the dust-containing gas.

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