CN113617166B

CN113617166B - Rotary negative pressure automatic cleaning filter

Info

Publication number: CN113617166B
Application number: CN202110951877.9A
Authority: CN
Inventors: 葛海泉; 林朝韩; 骆骅
Original assignee: Hangzhou Kangliwei Environmental Protection Technology Co ltd
Current assignee: Hangzhou Kangliwei Environmental Protection Technology Co ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2022-08-12
Anticipated expiration: 2041-08-18
Also published as: CN113617166A

Abstract

The application discloses automatic clearance filter of rotatory negative pressure, which comprises a housin, the casing has air inlet and gas outlet, its characterized in that: the shell is internally provided with a roller assembly which is used for automatically rotating and filtering the gas entering from the gas inlet and discharging the filtered gas through the gas outlet, and a cleaning assembly which is used for cleaning the particles attached to the rotating roller assembly in real time and uniformly collecting and treating the particles. The device has the advantages that the particle pretreatment has better technology and guarantee, the pretreatment effect is good, the post-treatment purification facility can be ensured to run well, and the efficient purification and the environment-friendly emission reaching the standard are realized.

Description

Rotary negative pressure automatic cleaning filter

Technical Field

The invention relates to the technical field of environment-friendly equipment, in particular to a rotary negative pressure automatic cleaning filter.

Background

The conventional methods for particulate matter pretreatment are: the spray and dry filter are generally required to be replaced in practical use (1-2 weeks), which is a common difficult point and pain point in the particulate matter pretreatment purification process, the replacement workload is large, the spare part consumption cost is high, and secondary dangerous waste is generated in use. The continuity and sustainability are poor, the service life is short, the cost is high, the purification efficiency is low, and the waste gas cannot reach the standard, so the improvement is needed.

Disclosure of Invention

The present invention is directed to solving one of the technical problems of the prior art.

The application provides an automatic clearance filter of rotatory negative pressure, which comprises a housin, the casing has air inlet and gas outlet, its characterized in that: the shell is internally provided with a roller assembly which is used for automatically rotating and filtering the gas entering from the gas inlet and discharging the filtered gas through the gas outlet, and a cleaning assembly which is used for cleaning the particles attached to the rotating roller assembly in real time and uniformly collecting and treating the particles.

By adopting the rotary negative pressure automatic cleaning filter, the roller component for automatically rotating and filtering the gas entering from the gas inlet and discharging the filtered gas through the gas outlet and the cleaning component for cleaning the particulate matters attached to the rotating roller component in real time and uniformly collecting the particulate matters are arranged in the shell, so that the problem that the dry filter needs to be replaced generally for one to two weeks in actual use can be effectively solved, the cleaning component can be used for cleaning the particulate matters attached to the rotating roller component in real time and uniformly collecting the particulate matters, the roller component is used for filtering, the filtering and the cleaning are simultaneously carried out in different areas, and the efficient continuous operation is kept, the device has the advantages that the particle pretreatment has better technology and guarantee, the pretreatment effect is good, the post-treatment purification facility can be ensured to run well, and the efficient purification and the environment-friendly emission reaching the standard are realized.

Preferably: the cleaning assembly comprises a plurality of negative pressure suction nozzles, a separation and collection device connected with the negative pressure suction nozzles through pipelines, and a negative pressure power source connected with the separation and collection device in series, wherein the negative pressure suction nozzles are arranged in the shell, and the negative pressure adsorption ends face the surface of the roller assembly.

Preferably: the roller assembly comprises a support arranged inside the shell and a roller rotatably arranged on the support, the peripheral wall of the roller is at least one layer of stainless steel wire filter screen, and a driving end used for driving the roller to rotate is arranged on one side of the support.

Preferably: the negative pressure suction nozzles are partially arranged on the outer circumferential side wall of the roller and are sequentially arranged at equal intervals along the length direction of the roller, partially arranged at one end of the roller far away from the packing sealing plate, and the negative pressure suction ends face the end wall of the roller and are provided with bristles contacted with the surface of the roller.

Preferably: the utility model discloses a differential pressure gauge, including casing, drum periphery wall, filler closing plate, filter treatment chamber and the air outlet chamber of admitting air, be provided with the filler closing plate around the one end that the drum periphery wall is close to the gas outlet on the casing inside wall, filler closing plate cooperation drum tip divides the casing inside into and admits air the filter treatment chamber and go out the air chamber, it is connected with the differential pressure gauge that is used for showing the differential pressure to admit air between filter treatment chamber and the air outlet chamber.

Preferably: the separation and collection device comprises a cyclone cylinder body arranged outside the shell, a secondary filter barrel arranged inside the cyclone cylinder body and a hopper detachably connected to the bottom of the cyclone cylinder body, the top of the cyclone cylinder body is connected with a negative pressure power source, the top of the secondary filter barrel is fixed to the inner top of the cyclone cylinder body through a connecting plate, an upper annular baffle is arranged on the inner wall of the cyclone cylinder body around the secondary filter barrel, and a pipeline is connected with the side wall of the upper portion of the cyclone cylinder body and located below the upper end of the upper annular baffle.

Preferably: the negative pressure power supply is venturi and air pump, venturi's entry end is connected with the air pump output through first pipe, venturi's negative pressure mouth is connected with whirlwind barrel top through the second pipe, be provided with in the second grade filter vat based on the rotatory back-spray rotating assembly who makes the little particulate matter separation on the second grade filter vat of negative pressure power supply, whirlwind barrel top is provided with the aerodynamic lift subassembly that goes up and down based on negative pressure power supply power control drive back-spray rotating assembly, be provided with on the first pipe and be used for switching the switching subassembly that the air pump exported back-spray rotating assembly and aerodynamic lift subassembly when needing back-spray rotating assembly back-spray and aerodynamic lift subassembly drive to go up and down.

Preferably: the utility model discloses a cylinder, including cylinder, counter-spray rotating assembly includes hollow middle post and rotates the first rotation pole of connection in middle bottom of the post portion, first rotation pole lower extreme is connected with the cylinder that has the cavity, be connected with two piece at least auxiliary pipes on the cylinder, rotatory orifice has been seted up on the one end lateral wall that the cylinder was kept away from to the auxiliary pipe, it is rotatory around the cylinder center pin to drive cylinder and two piece at least auxiliary pipes when rotatory orifice sprays, auxiliary pipe lower surface and tip are provided with a plurality of orifices respectively, the auxiliary pipe includes interconnect's first auxiliary pipe and second auxiliary pipe, first auxiliary pipe extends along the cylinder radial line of circumference as the center, first auxiliary pipe one end and cylinder fixed connection, the second auxiliary pipe outwards extends towards the clockwise or the anticlockwise slope of cylinder circumference.

Preferably: the air power lifting assembly comprises a main body which is arranged at the top of the cyclone cylinder body and is internally provided with a lifting slide way, a lifting plate which is arranged in the lifting slide way in a lifting sliding manner, an air inlet control block which is arranged at the top of the main body and made of rubber materials, an air passage which is arranged in the air inlet control block and is vertically communicated with the lifting slide way, and an air control rod which is horizontally crossed in the air inlet control block from front to back, wherein the air passage is provided with an air hole communicated with the air passage, an extension pipe communicated with the air hole is connected on the lower side wall in the air passage and is positioned on the lower side wall of the air control rod, the lifting plate is connected with a middle column through a connecting rod, the air control rod penetrates through the air passage and can vertically move and is tightly sealed with a contact section of the air inlet control block through a rubber clamp, the air passage above the air control rod is sealed by rubber forming the air passage, and the switching assembly comprises a switching valve, two connectors of the switching valve are connected on the first pipe in series, the other connector is connected with a third pipe, the third pipe is provided with two outlets, one outlet is connected with the upper end of the air duct, and the other outlet is communicated with the inside of the middle column.

Preferably: the air passage is sequentially provided with an air inlet, a placing groove and a channel from top to bottom, the upper level of the air inlet control block is provided with an air relief port communicated with the placing groove, the bottom of the air inlet is sealed by rubber forming the air passage, an air control rod is horizontally inserted in the placing groove and is in sealing contact with the inner wall of the placing groove, the main body is also provided with a control clamping lifting assembly used for controlling the lifting of the air control rod and simultaneously controlling the clamping of the air inlet control block, the control clamping lifting assembly comprises a first rod, a second rod and a third rod, the lower ends of the first rod, the second rod and the third rod are hinged with a rotating rod, a guide column is fixed between the first rod and the third rod and positioned on the side wall of the main body, a spring is connected between the upper ends of the first rod and the third rod, the second rod vertically slides to penetrate through the guide column, and the upper ends of the first rod and the third rod are respectively connected with an extrusion rod, two extrusion rods respectively clamp the two sides of the air inlet control block, the upper end of the second rod is fixed with one end of the ventilation control rod, a vertical guide sliding hole is formed in the joint of the outer wall of the air inlet control block and the ventilation control rod, and the middle of the rotating rod is rotatably arranged on the side wall of the main body.

The advantageous effects of the present invention will be explained in detail in the embodiments, thereby making the advantageous effects more apparent.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is a partially enlarged structural diagram of a portion a in fig. 1.

Fig. 3 is a partially enlarged structural diagram of part B in fig. 2.

Fig. 4 is a partially enlarged structural diagram of the part C in fig. 2.

Fig. 5 is a schematic diagram of the structure of the aerodynamic lifting assembly of the present application.

Fig. 6 is a schematic structural diagram of a back spray rotating assembly according to the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Example 1:

as shown in fig. 1, a rotary negative pressure automatic cleaning filter includes a housing 3, the housing 3 has an air inlet and an air outlet, and in the embodiment of the present invention, a drum assembly for automatically rotating and filtering air entering from the air inlet and discharging the filtered air through the air outlet and a cleaning assembly for cleaning particulate matter attached to the rotating drum assembly in real time and uniformly collecting the particulate matter are disposed in the housing 3.

By adopting the rotary negative pressure automatic cleaning filter, the roller component for automatically rotating and filtering the gas entering from the gas inlet and discharging the filtered gas through the gas outlet and the cleaning component for cleaning the particulate matters attached to the rotating roller component in real time and uniformly collecting the particulate matters are arranged in the shell 3, so that the problem that the dry filter needs to be replaced generally for one to two weeks in actual use can be effectively solved, the cleaning component can be used for cleaning the particulate matters attached to the rotating roller component in real time and uniformly collecting the particulate matters, the roller component filters to simultaneously perform the filtering and the cleaning in different regions and keep efficient and continuous operation, the device has the advantages that the particle pretreatment has better technology and guarantee, the pretreatment effect is good, the post-treatment purification facility can be ensured to run well, and the efficient purification and the environment-friendly emission reaching the standard are realized.

In the embodiment of the present invention, the cleaning assembly includes a plurality of negative pressure suction nozzles 6, a separation and collection device 7 connected to the plurality of negative pressure suction nozzles 6 through a pipeline, and a negative pressure power source connected in series with the separation and collection device 7, the plurality of negative pressure suction nozzles 6 are disposed in the casing 3, and the negative pressure suction end faces the surface of the drum assembly.

The cleaning assembly comprises a plurality of negative pressure suction nozzles 6, pipelines, a separation and collection device 7, a negative pressure power source and the like, strong suction force is generated at the negative pressure suction nozzles 6 by the negative pressure power source, particulate particles are smoothly separated from the surface of the roller assembly, the particulate particles are collected to the separation and collection device 7 through a pipeline, and the separation and collection device 7 adopts a high-efficiency gas-solid two-phase flow separation technology and has high-efficiency separation efficiency.

In the embodiment of the present invention, the roller assembly includes a support 12 disposed inside the housing 3 and a roller 4 rotatably disposed on the support 12, the outer peripheral wall of the roller 4 is at least one layer of stainless steel wire filtering net, one side of the support 12 is provided with a driving end for driving the roller 4 to rotate, and the driving end is a driving motor 11.

The driving end drives the roller 4 to continuously rotate, the particulate slag can be efficiently and continuously cleaned, the continuous rotating roller 4 structure technology divides the filtering and negative pressure cleaning of the particulate slag into two areas, but the filtering and negative pressure cleaning are simultaneously carried out, and the equipment can efficiently and continuously operate; the pretreatment filtration efficiency is that the removal rate of paint particles above 20um is more than 95%, the removal rate of paint particles above 10um is more than 90%, and the removal rate of paint particles above 5um is more than 86%.

In the embodiment of the invention, part of the negative pressure suction nozzles 6 are arranged at the outer circumferential side wall of the roller 4 and are sequentially arranged at equal intervals along the length direction of the roller 4, part of the negative pressure suction nozzles are arranged at one end of the roller 4 far away from the packing sealing plate 13, the negative pressure suction ends face the end wall of the roller 4, and the negative pressure suction ends of the negative pressure suction nozzles 6 are provided with bristles contacted with the surface of the roller 4.

In order to further ensure the negative pressure adsorption cleaning effect of the negative pressure suction nozzles 6 on the outer circumferential side wall of the roller 4, part of the negative pressure suction nozzles 6 are arranged on the outer circumferential side wall of the roller 4 and are sequentially arranged at equal intervals along the length direction of the roller 4, part of the negative pressure suction nozzles are arranged at one end, away from the packing sealing plate 13, of the roller 4, the negative pressure adsorption end faces the end wall of the roller 4 and is used for cleaning the end part, used for filtering, of the roller 4, and bristles in contact with the surface of the roller 4 are arranged at the negative pressure adsorption end of the negative pressure suction nozzles 6 and are used for further assisting the negative pressure adsorption to improve the cleaning effect. The roller 4 part adopts stainless steel wire net G4 or high-performance carbon fiber, and has the capabilities of high cost performance, long service life, high temperature resistance and high efficiency in removing particulate matters.

In the embodiment of the present invention, a packing sealing plate 13 is disposed on the inner side wall of the housing 3 around one end of the outer circumferential wall of the drum 4 near the air outlet, the packing sealing plate 13 cooperates with the end of the drum 4 to divide the interior of the housing 3 into an inlet filtering processing chamber and an outlet chamber, and a differential pressure gauge 14 for displaying differential pressure is connected between the inlet filtering processing chamber and the outlet chamber.

Be provided with packing plate 13 around the one end that 4 periphery walls of cylinder are close to the gas outlet on the 3 inside walls of casing, a one end for to cylinder 4 is sealed, make packing plate 13 cooperate 4 tip of cylinder with casing 3 inside divide into admit air the filtration treatment room and go out the air chamber, the filtration separation of carrying out the particulate matter in the filtration treatment room that admits air, gaseous entering into the air chamber after through cylinder 4 and discharging afterwards, be connected with the differential pressure gauge 14 that is used for showing the differential pressure between the filtration treatment room that admits air and the air chamber of going out, can in time feed back differential pressure state, in time, the quality of suggestion clearance repair duty cycle and feedback clearance. Inside pending gas enters into casing 3 through the air inlet, the particulate matter is filtered on 4 surfaces of cylinder, gas after the filtration is discharged from the gas outlet, packing closing plate 13 is used for playing and blocks sealed effect, the particulate matter that is filtered out on 4 surfaces of cylinder is along with the rotation of cylinder 4, a plurality of negative pressure suction nozzle 6 absorb and send into separation collection device 7 the adnexed particulate matter on 4 lateral walls of cylinder, clear up and collect the processing in unison in real time the particulate matter, whole leakproofness is high and the removal efficiency is high.

Example 2:

as shown in fig. 1 to 6, in addition to the structural features of the previous embodiments, in a specific embodiment of the present invention, the separation and collection device 7 includes a cyclone cylinder 21 disposed outside the housing 3, a secondary filter vat 23 disposed inside the cyclone cylinder 21, and a hopper 22 detachably connected to the bottom of the cyclone cylinder 21, the top of the cyclone cylinder 21 is connected to a negative pressure power source, the top of the secondary filter vat 23 is fixed to the top inside the cyclone cylinder 21 through a connecting plate, an upper annular baffle 24 is disposed on the inner wall of the cyclone cylinder 21 around the secondary filter vat 23, and a pipeline is connected to the upper side wall of the cyclone cylinder 21 and below the upper end of the upper annular baffle 24.

Under the operation of the negative pressure power source, negative pressure is formed inside the cyclone cylinder 21, so that negative pressure suction is formed at the plurality of negative pressure suction nozzles 6 through a pipeline, the particle matter attached to the outer side wall of the roller 4 is sucked and sent into the cyclone cylinder 21, the inner wall of the cyclone cylinder 21 is provided with an upper annular baffle 24 around the secondary filter barrel 23, a pipeline is connected with the upper side wall of the cyclone cylinder 21 and below the upper end of the upper annular baffle 24, the large particle matter is directly collected into the hopper 22 under the action of centrifugal force and along with gravity, the small particle matter is separated by the secondary filter barrel 23, the separated clean gas is discharged, and after the large particle matter is continuously accumulated for a certain time, dismantle hopper 22 from cyclone 21 bottom after the shutdown, realize the unified collection processing to big particulate matter, for prior art, reduced manufacturing cost, improved the treatment effeciency.

In a specific embodiment of the present invention, the negative pressure power source is a venturi tube 31 and an air pump 39, an inlet end of the venturi tube 31 is connected to an output end of the air pump 39 through a first tube 33, a negative pressure port of the venturi tube 31 is connected to a top of the cyclone cylinder 21 through a second tube 32, a reverse-spray rotating assembly which rotates based on the negative pressure power source and separates small particles on the secondary filter cylinder 23 by reverse-spray is disposed in the secondary filter cylinder 23, an aerodynamic lifting assembly which drives the reverse-spray rotating assembly to lift based on the negative pressure power source power control is disposed at the top of the cyclone cylinder 21, and a switching assembly which is disposed on the first tube 33 and used for switching an output of the air pump 39 to the reverse-spray rotating assembly and the aerodynamic lifting assembly when the reverse-spray rotating assembly and the aerodynamic lifting assembly are required to lift.

Under the operation action of the air pump 39, at this time, the state of the switching assembly is that the air pump 39 outputs air to the venturi tube 31, and when the air pump passes through the venturi tube 31, the negative pressure port of the venturi tube 31 extracts the air inside the cyclone cylinder 21 through the second pipe 32, negative pressure is formed inside the cyclone cylinder 21, so that negative pressure suction is formed at the plurality of negative pressure suction nozzles 6 through a pipeline, particulate matters attached to the outer side wall of the drum 4 are sucked and sent into the cyclone cylinder 21, large particulate matters are separated and collected into the hopper 22 under the action of centrifugal force and along with gravity, small particulate matters are separated by the secondary filter barrel 23, the separated clean air is sucked into the venturi tube 31 and discharged along with the air, after continuously accumulating for a period of time, the switching assembly is switched to the air pump 39 to output to the reverse-spraying rotating assembly and the aerodynamic lifting assembly, at this time, the extraction of the inside the cyclone cylinder 21 is stopped, and switch to aerodynamic force lifting unit drive backspray rotating assembly and go up and down and the backspray gas simultaneously, with little particulate matter from second grade lauter tub 23 on by the blowback separation, fall into hopper 22 afterwards, the blowback is effectual to cover and goes up and down comprehensively and aerodynamic force drive, whole structure is with low costs, do not need extra drive structure, whole linkage nature is high, switch into the blowback state when stopping the negative pressure suction, the operation is reasonable stable, high durability and convenient use, when needing the negative pressure suction again, only need the switching subassembly to switch again for gaseous from air pump 39 output to venturi 31 can.

In the embodiment of the present invention, the back spray rotating assembly includes a hollow middle column 41 and a first rotating rod 411 rotatably connected to the bottom of the middle column 41, a cylinder 412 having a chamber is connected to the lower end of the first rotating rod 411, at least two sub-pipes 42 are connected to the cylinder 412, the side wall of one end of the auxiliary pipe 42 far away from the cylinder 412 is provided with a rotary spray hole 43, when spraying, the rotary spray hole 43 drives the cylinder 412 and at least two auxiliary pipes 42 to rotate around the central axis of the cylinder 412, the lower surface and the end of the auxiliary pipe 42 are respectively provided with a plurality of spray holes 44, the auxiliary pipe 42 comprises a first auxiliary pipe 421 and a second auxiliary pipe 422 which are connected with each other, the first auxiliary pipe 421 extends along a circumferential radial line taking the column 412 as a center, one end of the first auxiliary pipe 421 is fixedly connected with the column 412, the second sub-tube 422 extends obliquely outward in a clockwise or counterclockwise direction of the circumference of the cylinder 412.

In specific implementation, under the operation action of the air pump 39, the state of the switching assembly is that the air pump 39 outputs air to the venturi tube 31, and the venturi tube 31 is passed through, so that the negative pressure port of the venturi tube 31 pumps the air in the cyclone cylinder 21 through the second pipe 32, negative pressure is formed in the cyclone cylinder 21, negative pressure suction is formed at the negative pressure suction nozzles 6 through pipelines, particulate matter attached to the outer side wall of the drum 4 is sucked and sent into the cyclone cylinder 21, large particulate matter is separated and collected into the hopper 22 under the action of centrifugal force and along with gravity, small particulate matter is separated by the secondary filter barrel 23, the separated clean air is sucked into the venturi tube 31 and discharged along with the air, after continuously accumulating for a period of time, the switching assembly is switched to the air pump 39 to output to the reverse injection rotating assembly and the aerodynamic lifting assembly, the gas is sent into the middle column 41, the first rotating rod 411 is rotatably connected to the bottom of the middle column 41, the lower end of the first rotating rod 411 is connected with a cylinder 412 with a chamber, the cylinder 412 is connected with at least two auxiliary pipes 42, the side wall of one end of the auxiliary pipe 42 far away from the cylinder 412 is provided with a rotating spray hole 43, the lower surface and the end part of the auxiliary pipe 42 are respectively provided with a plurality of spray holes 44, one part of the gas is sprayed through the rotating spray hole 43, the other part of the gas is sprayed through the plurality of spray holes 44, the cylinder 412 and the at least two auxiliary pipes 42 are driven to rotate around the central axis of the cylinder 412 when the rotating spray hole 43 is sprayed, the side wall and the bottom of the secondary filter barrel 23 are subjected to back flushing when the plurality of spray holes 44 are sprayed, the structure reduces the need of additionally arranging a corresponding driving part to additionally drive the at least two auxiliary pipes 42 to rotate so as to perform rotary back flushing, the structure is simple and the cost is reduced, the use is simple and convenient, in the back blowing process, the central column 41 is driven to lift by the aerodynamic lifting assembly and reversely jet air, the back blowing effect is good, the coverage is comprehensive, the lifting is driven by the aerodynamic, the whole structure is low in cost, an additional driving structure is not needed, the whole linkage is high, the back blowing state is switched when the negative pressure suction is stopped, the operation is reasonable and stable, the use is convenient, and when the negative pressure suction is needed again, the air is output to the Venturi tube 31 from the air pump 39 only by switching the switching assembly again; the second sub-tube 422 extends obliquely outward in a clockwise or counterclockwise direction of the circumference of the cylinder 412, and the driving effect of the sub-tube 42 for driving rotation can be enhanced.

Example 3:

as shown in fig. 1 to 6, in addition to the structural features of the previous embodiments, in a specific embodiment of the present invention, the aerodynamic lifting assembly includes a main body 51 having a lifting slide way inside the top of the cyclone cylinder 21, a lifting plate 52 slidably arranged in the lifting slide way, an air inlet control block 54 made of rubber material and arranged on the top of the main body 51, an air passage 55 arranged inside the air inlet control block 54 and penetrating up and down and communicating with the lifting slide way, and an air ventilation control rod 56 penetrating through the air inlet control block 54 back and forth, the air ventilation control rod 56 is provided with an air vent 57 communicating with the air passage 55, the air passage 55 is connected to an extension pipe 101 communicating with the air vent 57 and arranged on the lower side wall of the air ventilation control rod 56, the lifting plate 52 is connected to the middle column 41 through a connecting rod 53, the air ventilation control rod 56 penetrates through the air passage 55 and can move up and down and tightly seal with the contact section of the air inlet control block 54 through a rubber clamp, the air duct 55 above the air control lever 56 is sealed by rubber constituting the air duct 55, and the switching assembly includes a switching valve 100, two ports of the switching valve 100 are connected in series to the first pipe 33, the other port is connected to a third pipe 34, the third pipe 34 has two outlets, one outlet is connected to the upper end of the air duct 55, and the other outlet is communicated with the inside of the middle column 41.

In specific implementation, under the operation action of the air pump 39, the switching valve 100 is in a state that the air pump 39 outputs air to the venturi tube 31, and the air passes through the venturi tube 31, so that the negative pressure port of the venturi tube 31 pumps the air inside the cyclone cylinder 21 through the second pipe 32, negative pressure is formed inside the cyclone cylinder 21, negative pressure suction is formed at the plurality of negative pressure suction nozzles 6 through a pipeline, particulate matter attached to the outer side wall of the drum 4 is sucked and sent into the cyclone cylinder 21, large particulate matter is directly separated and collected into the hopper 22 under the action of centrifugal force along with gravity, small particulate matter is separated by the secondary filter barrel 23, the separated clean air is sucked into the venturi tube 31 and discharged along with the air, after continuously accumulating for a period of time, the switching valve 100 is switched to the air pump 39 to be communicated with the third pipe 34, and the air pump 39 outputs air to the reverse-jet rotating assembly and the aerodynamic lifting assembly, the gas is sent into the middle column 41, the first rotating rod 411 is rotatably connected to the bottom of the middle column 41, the lower end of the first rotating rod 411 is connected with a cylinder 412 with a chamber, the cylinder 412 is connected with at least two auxiliary pipes 42, the side wall of one end of the auxiliary pipe 42 far away from the cylinder 412 is provided with a rotating spray hole 43, the lower surface and the end part of the auxiliary pipe 42 are respectively provided with a plurality of spray holes 44, one part of the gas is sprayed through the rotating spray hole 43, the other part of the gas is sprayed through the plurality of spray holes 44, the cylinder 412 and the at least two auxiliary pipes 42 are driven to rotate around the central axis of the cylinder 412 when the rotating spray hole 43 is sprayed, the side wall and the bottom of the secondary filter barrel 23 are subjected to back flushing when the plurality of spray holes 44 are sprayed, the structure reduces the need of additionally arranging a corresponding driving part to additionally drive the at least two auxiliary pipes 42 to rotate so as to perform rotary back flushing, the structure is simple and the cost is reduced, the use is simple and convenient, in the back blowing process, a part of the gas output by the air pump 39 enters the air passage 55, the air control rod 56 moves upwards at the moment, so that the air holes 57 arranged on the air control rod 56 are communicated with the air passage 55, the gas enters the lifting slide way through the air passage 55, the air holes 57 and the extension pipe 101 at the moment, the lifting plate 52 is pushed downwards, the lifting plate 52 is connected with the middle column 41 through the connecting rod 53, the middle column 41 descends and reversely sprays the gas at the same time, the back blowing effect is good, the coverage is comprehensive, the lifting is driven by aerodynamic force to ascend and descend, the whole structure is low in cost, an additional driving structure is not needed, the whole linkage is high, the lifting and back blowing state is switched when the negative pressure suction is stopped, the operation is reasonable and stable, and the use is convenient; after the lowering is completed, when the negative pressure pumping needs to be performed again, the state of the switching valve 100 is only required to switch the air returning pump 39 to output air to the venturi tube 31.

In the embodiment of the present invention, the air duct 55 is sequentially provided with an air inlet 61, a placement groove 62 and a channel 63 from top to bottom, the air inlet control block 54 is horizontally provided with an air outlet 59 communicated with the placement groove 62, the bottom of the air inlet 61 is sealed by rubber forming the air duct 55, the placement groove 62 is horizontally inserted with an air control rod 56, the air control rod 56 is in sealing contact with the inner wall of the placement groove 62, the main body 51 is further provided with a control clamping lifting assembly for controlling the lifting of the air control rod 56 and simultaneously controlling the clamping of the air inlet control block 54, the control clamping lifting assembly comprises a first rod 64, a second rod 65 and a third rod 66, the lower ends of the first rod 64, the second rod 65 and the third rod 66 are hinged with a rotating rod 67, a guide column 68 is fixed on the side wall of the main body 51 between the first rod 64 and the third rod 66, a spring 69 is connected between the upper ends of the first rod 64 and the third rod 66, the second pole 65 slides from top to bottom and runs through guide post 68, first pole 64 and third pole 66 upper end are connected with extrusion pole 70 respectively, and two extrusion poles 70 press from both sides tight control block 54 that admits air respectively, the upper end and the ventilation control pole 56 one end of second pole 65 are fixed, it is equipped with vertical direction slide opening 71 with ventilation control pole 56 junction on the outer wall of control block 54 to admit air, the setting is rotated on main part 51 lateral wall in the middle part of dwang 67.

In specific implementation, under the operation action of the air pump 39, the switching valve 100 is in a state that the air pump 39 outputs air to the venturi tube 31, and the air passes through the venturi tube 31, the negative pressure port of the venturi tube 31 pumps the air inside the cyclone cylinder 21 through the second pipe 32, negative pressure is formed inside the cyclone cylinder 21, so that negative pressure suction is formed at the plurality of negative pressure suction nozzles 6 through a pipeline, particulate matter attached to the outer side wall of the drum 4 is sucked and sent into the cyclone cylinder 21, large particulate matter is directly separated and collected into the hopper 22 under the action of centrifugal force along with gravity, small particulate matter is separated by the secondary filter barrel 23, the separated clean air is sucked into the venturi tube 31 and discharged along with the air, after continuously accumulating for a period of time, the switching valve 100 is switched to the air pump 39 to be communicated with the third pipe 34, and then the air is sent into the middle column 41, one part of the air is sprayed through the rotary spray holes 43, the other part of the air is sprayed through the plurality of spray holes 44, the rotary spray holes 43 drive the cylinder 412 and the at least two auxiliary pipes 42 to rotate around the central shaft of the cylinder 412 when spraying, the plurality of spray holes 44 spray out, back flushing is carried out on the side wall and the bottom of the secondary filter vat 23, in the back flushing process, one part of the air output by the air pump 39 enters the air passage 55, at the moment, the first rod 64, the second rod 65 and the third rod 66 are driven to ascend through pressing the rotary rod 67, the first rod 64 and the third rod 66 are blocked by the guide post 68, the first rod 64 and the third rod 66 are opened, the spring 69 is stretched to not clamp the air inlet control block 54, the air inlet control rod 56 is driven to move upwards, the air vent 57 arranged on the air vent control rod 56 is communicated with the air passage 55, the air vent 57 and the extension pipe 101, at the air enters the lifting slide to push the lifting plate 52 downwards, the lifting plate 52 is connected with the middle column 41 through the connecting rod 53, so that the middle column 41 descends and reversely sprays gas at the same time, the reverse blowing effect is good, the coverage is comprehensive, the aerodynamic driving lifting is realized, the whole structure cost is low, an additional driving structure is not needed, the whole linkage is high, the rotating rod 67 is rotated upwards to drive the first rod 64, the second rod 65 and the third rod 66 to descend, the upper ends of the first rod 64 and the third rod 66 are relatively close to each other under the action of the spring 69 to extrude the upper part of the air inlet control block 54, the upper part of the placing groove 62 is extruded and blocked, air cannot enter, the air inlet control rod 56 slides downwards to the upper part of the channel 63, at the same time, the air outlet 59 is communicated with the placing groove 62 through the air vent 57 and the extension pipe 101, so that the gas in the lifting channel is discharged from the air outlet 59 and drives the lifting plate 52 to ascend and reset along with the discharge of the gas, and the lifting and reverse blowing state is switched when the negative pressure suction is stopped, the operation is reasonable and stable, and the use is convenient; after the back flushing is finished, the state of the switching valve 100 is switched to enable the air returning pump 39 to output air to the venturi tube 31, and then negative pressure suction can be conducted again, so that the whole device is convenient to use and convenient to switch, control and use.

The service life of this equipment is long, and economic nature is good: the common particulate matter pretreatment filter bag needs to be replaced once in 1-2 weeks, and the replacement calculation is carried out according to 2 weeks: for a system with 3 ten thousand air volumes, the filter bag replacement cost needs 24 times 2000 yuan per year, the dangerous waste treatment cost is 15000 yuan per year, the labor cost is 7200 yuan per year, and the total operating and maintaining cost is 70200 yuan per year; the service life of the device is 2 years, the material cost for once replacement is 5000 yuan, the annual cost is 2500 yuan/year, the collected particulate matter particles can be recycled (with certain value and without calculation), the labor cost is 300 yuan/year, the electricity cost is about 4800 yuan/year, the annual total operation and maintenance cost is only about 2800+4800=7600 yuan/year, and the economic comparison advantage is obvious.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a rotatory negative pressure self-cleaning filter, includes casing (3), casing (3) have air inlet and gas outlet, its characterized in that: the device is characterized in that a roller assembly used for automatically rotating and filtering gas entering from a gas inlet and discharging the filtered gas through a gas outlet and a cleaning assembly used for cleaning particles attached to the rotating roller assembly in real time and uniformly collecting the particles are arranged in the shell (3), the cleaning assembly comprises a plurality of negative pressure suction nozzles (6), a separation and collection device (7) connected with the negative pressure suction nozzles (6) through pipelines and a negative pressure power source connected with the separation and collection device (7) in series, the negative pressure suction nozzles (6) are arranged in the shell (3), the negative pressure suction ends face the surface of the roller assembly, the roller assembly comprises a support (12) arranged in the shell (3) and a roller (4) rotatably arranged on the support (12), the peripheral wall of the roller (4) is at least one layer of stainless steel wire filter screen, one side of the support (12) is provided with a driving end used for driving the roller (4) to rotate, the middle parts of the negative pressure suction nozzles (6) are arranged on the outer circumferential side wall of the roller (4) and are sequentially arranged at equal intervals along the length direction of the roller (4), the parts of the negative pressure suction nozzles are arranged at one end of the roller (4) far away from the packing sealing plate (13) and the negative pressure adsorption end faces the end wall of the roller (4), the negative pressure adsorption end of each negative pressure suction nozzle (6) is provided with bristles contacting with the surface of the roller (4), the separation and collection device (7) comprises a cyclone cylinder body (21) arranged outside the shell (3), a secondary filter barrel (23) arranged inside the cyclone cylinder body (21) and a hopper (22) detachably connected to the bottom of the cyclone cylinder body (21), the top of the cyclone cylinder body (21) is connected with a negative pressure power source, the top of the secondary filter barrel (23) is fixed at the inner top of the cyclone cylinder body (21) through a connecting plate, and an upper annular baffle plate (24) is arranged on the inner wall of the cyclone cylinder body (21) around the secondary filter barrel (23), the pipeline is connected with the upper side wall of the cyclone cylinder body (21) and is positioned below the upper end of the annular baffle (24), the negative pressure power source is a Venturi tube (31) and an air pump (39), the inlet end of the Venturi tube (31) is connected with the output end of the air pump (39) through a first tube (33), the negative pressure port of the Venturi tube (31) is connected with the top of the cyclone cylinder body (21) through a second tube (32), a reverse-spraying rotating assembly which is used for separating small particles on the secondary filter barrel (23) based on the rotation and reverse spraying of the negative pressure power source is arranged in the secondary filter barrel (23), an air power lifting assembly which is used for controlling the lifting of the reverse-spraying rotating assembly based on the power of the negative pressure power source and switching the air pump (39) to output to the reverse-spraying rotating assembly and the air power lifting assembly when the reverse-spraying rotating assembly and the air power lifting assembly are required to lift is arranged on the first tube (33), the reverse spraying rotating assembly comprises a hollow middle column (41) and a first rotating rod (411) rotatably connected to the bottom of the middle column (41), the lower end of the first rotating rod (411) is connected with a cylinder (412) with a chamber, the cylinder (412) is connected with at least two auxiliary pipes (42), one side wall, away from the cylinder (412), of each auxiliary pipe (42) is provided with a rotating spraying hole (43), the rotating spraying holes (43) drive the cylinder (412) and the at least two auxiliary pipes (42) to rotate around the central axis of the cylinder (412) during spraying, the lower surface and the end of each auxiliary pipe (42) are respectively provided with a plurality of spraying holes (44), each auxiliary pipe (42) comprises a first auxiliary pipe (421) and a second auxiliary pipe (422) which are connected with each other, the first auxiliary pipe (421) extends along the circumferential radial line with the cylinder (412) as the center, one end of the first auxiliary pipe (421) is fixedly connected with the cylinder (412), the second auxiliary pipe (422) extends outwards in an inclined manner towards the clockwise or anticlockwise direction of the circumference of the cylinder (412), the aerodynamic lifting assembly comprises a main body (51) which is arranged at the top of the cyclone cylinder (21) and is provided with a lifting slide way, a lifting plate (52) which is arranged in the lifting slide way in a lifting sliding manner, an air inlet control block (54) which is arranged at the top of the main body (51) and is made of rubber, an air channel (55) which is arranged in the air inlet control block (54) and is vertically communicated with the lifting slide way, and an air ventilation control rod (56) which is horizontally arranged in the air inlet control block (54) in a front-and-back traversing manner, a vent hole (57) communicated with the air channel (55) is arranged on the air ventilation control rod (56), an extension pipe (101) communicated with the vent hole (57) is connected on the lower side wall of the air ventilation control rod (55), and the lifting plate (52) is connected with the middle column (41) through a connecting rod (53), the ventilation control rod (56) penetrates through the ventilation channel (55), can move up and down and is tightly sealed with a contact section of the air inlet control block (54) through a rubber clamp, the ventilation channel (55) above the ventilation control rod (56) is sealed by rubber forming the ventilation channel (55), the switching assembly comprises a switching valve (100), two connectors of the switching valve (100) are connected to the first pipe (33) in series, the other connector of the switching valve is connected with a third pipe (34), the third pipe (34) is provided with two outlets, one outlet is connected with the upper end of the ventilation channel (55), and the other outlet is communicated with the inside of the middle column (41).

2. The automatic rotary negative pressure cleaning filter as claimed in claim 1, wherein a packing sealing plate (13) is arranged on the inner side wall of the housing (3) around one end of the peripheral wall of the roller (4) close to the air outlet, the packing sealing plate (13) is matched with the end of the roller (4) to divide the interior of the housing (3) into an inlet filtering processing chamber and an outlet chamber, and a differential pressure gauge (14) for displaying differential pressure is connected between the inlet filtering processing chamber and the outlet chamber.

3. The automatic rotary negative pressure cleaning filter as claimed in claim 1, wherein the air passage (55) comprises an air inlet (61), a placing groove (62) and a passage (63) from top to bottom, the air inlet control block (54) is horizontally provided with an air release port (59) communicated with the placing groove (62), the bottom of the air inlet (61) is sealed by rubber forming the air passage (55), an air control rod (56) is horizontally inserted in the placing groove (62), the air control rod (56) is in sealing contact with the inner wall of the placing groove (62), the main body (51) is further provided with a control clamping lifting assembly for controlling the lifting of the air control rod (56) and simultaneously controlling the clamping of the air inlet control block (54), the control clamping lifting assembly comprises a first rod (64), a second rod (65) and a third rod (66), and the first rod (64), Second pole (65) and third pole (66) lower extreme articulate has dwang (67), be fixed with guide post (68) between first pole (64) and third pole (66) and be located main part (51) lateral wall, be connected with spring (69) between first pole (64) and third pole (66) upper end, second pole (65) slide from top to bottom and run through guide post (68), first pole (64) and third pole (66) upper end are connected with extrusion stem (70) respectively, and two extrusion stem (70) press from both sides tight control block (54) both sides of admitting air respectively, the upper end and the ventilation control pole (56) one end of second pole (65) are fixed, be equipped with vertical direction slide opening (71) with ventilation control pole (56) junction on control block (54) outer wall of admitting air, dwang (67) middle part rotates and sets up on main part (51) lateral wall.