CN220779558U - Dust remover - Google Patents

Abstract

The utility model discloses a dust remover, which comprises: the device comprises a case, a cyclone separator, a filter screen, a filter cartridge, a negative pressure fan, a pulse back-blowing component and a controller. A first filtering chamber, a second filtering chamber, a third filtering chamber and a pulse chamber are sequentially arranged in the case along the flow direction of the waste gas, and an air inlet and an air outlet are formed in the side wall of the case; the waste gas enters the cyclone separator from the air inlet and then filters large-particle dust through centrifugal force and gravity; the filtered gas enters the second filtering chamber and then enters the third filtering chamber after being filtered by the filter screen; a filter cartridge is arranged in the third filter chamber, and gas enters the pulse chamber from the outlet end after being filtered by the filter cartridge; the negative pressure fan is arranged in the case and is provided with an air inlet end and an air outlet end, the air inlet end is communicated with the pulse chamber, the air outlet end is communicated with the air outlet, the negative pressure fan generates negative pressure to enable waste gas to enter from the air inlet, and the waste gas is discharged from the air outlet after being filtered. The utility model filters the waste gas three times by using three types of filtering modes, thereby obtaining the efficient and clean purifying effect.

Description

Dust remover

Technical Field

The utility model relates to the technical field of industrial dust removing equipment, in particular to a dust remover.

Background

In industrial production, dust is generated in many production processes, such as laser cutting, shearing, mixing, stone carving, circuit board processing, polishing, drilling, metal processing, crushing, powder feeding, grinding, etc., and therefore dust is required to be separated from the gas by a dust removing device.

At present, most of the dust removing devices are directly used for filtering all dust in gas once by adopting a filter cylinder, and the dust is purified once only by the filter cylinder, so that the existing dust removing devices cannot achieve high-efficiency and clean purifying effects.

Disclosure of Invention

The utility model provides a dust remover which aims to solve the problem that the existing dust removing equipment cannot achieve efficient and clean purifying effect.

In order to achieve the above object, the technical scheme of the present utility model is as follows:

a dust collector, comprising: the device comprises a case, a cyclone separator, a filter screen, a filter cartridge, a negative pressure fan, a pulse back-blowing component and a controller.

A first filtering chamber, a second filtering chamber, a third filtering chamber and a pulse chamber are sequentially arranged in the case along the flow direction of the waste gas; the side wall of the case is provided with an air inlet and an air outlet; the cyclone separator is arranged in the first filtering chamber, the air inlet is communicated with the second filtering chamber through the cyclone separator, and the cyclone separator utilizes centrifugal force and gravity to preliminarily filter large dust particles; the filter screen is detachably arranged between the second filter chamber and the third filter chamber, and waste gas enters the third filter chamber after being filtered by the filter screen; the filter cartridge is arranged in the third filter chamber, the filter cartridge is provided with a filter surface and an outlet end, and the waste gas is filtered by the filter surface and then enters the pulse chamber from the outlet end.

The negative pressure fan is arranged in the case, and is provided with an air inlet end and an air outlet end, the air inlet end is communicated with the pulse chamber, the air outlet end is communicated with the air outlet, the negative pressure fan generates negative pressure to enable waste gas to enter from the air inlet, and the waste gas is discharged from the air outlet after being filtered by the cyclone separator, the filter screen and the filter cartridge in sequence.

The pulse back-blowing assembly is arranged in the pulse chamber, the pulse back-blowing assembly stores high-pressure gas with the pressure being greater than the negative pressure generated by the negative pressure fan, the pulse back-blowing assembly intermittently blows out the high-pressure gas in the direction opposite to the flow direction of the waste gas, when the pulse back-blowing assembly blows out the high-pressure gas, the waste gas cannot enter from the air inlet under the action of the negative pressure generated by the negative pressure fan, and the high-pressure gas blows off dust on the filter cylinder.

The negative pressure fan and the pulse back-blowing component are respectively and electrically connected with the controller, and the controller controls the fan and the pulse back-blowing component to be opened and closed.

Further, the cyclone separator includes: cylinder, air-supply pipe, cone cylinder, exhaust pipe, first collection fill and first dust bucket.

The cylinder is of a cylindrical structure with two ends open, and is vertically arranged; the air inlet pipe is fixedly arranged on the outer peripheral surface of the cylinder along the tangential direction of the cylinder, the cylinder is communicated with the air inlet pipe, and the cylinder is communicated with the air inlet through the air inlet pipe; the conical cylinder body is of a truncated cone-shaped structure with two open ends, the conical cylinder body is fixedly arranged at the lower end of the cylinder body, and the open end with the large diameter of the conical cylinder body is in butt joint with the open end at the lower end of the cylinder body, so that the conical cylinder body is communicated with the cylinder body; the exhaust pipe is fixedly arranged at the upper end of the cylinder body, one end of the exhaust pipe is communicated with the upper end opening of the cylinder body, and the other end of the exhaust pipe is communicated with the second filtering chamber.

The waste gas enters the cylinder body along the tangential direction of the cylinder body through the air inlet pipe to perform rotary motion, the dust is separated from the waste gas by centrifugal force generated by the rotation of the waste gas, the dust falls down under the gravity, and the filtered waste gas is discharged by the exhaust pipe.

The first collecting hopper is fixedly arranged at the lower end of the cone cylinder body and communicated with the cone cylinder body, and gathers the falling dust; the first dust bucket is arranged below the first collecting hopper, and the first dust bucket is used for containing falling dust.

Further, one side of the second filtering chamber, which is close to the third filtering chamber, is provided with a rib plate, at least two threaded holes are formed in the rib plate, corresponding circular through holes are formed in the filter screen, screws are arranged in the threaded holes, and each screw penetrates through the corresponding circular through hole and then is screwed into the corresponding threaded hole to fix the filter screen on the rib plate.

Further, the below of third filter chamber is provided with the collection subassembly, and the collection subassembly includes: a second collection hopper and a second dust bucket; the second collecting hopper is fixedly arranged at the lower end of the third filtering chamber, the lower end of the third filtering chamber is provided with a yielding position communicated with the second collecting hopper, and the second collecting hopper gathers down dust; the second dust bucket is arranged below the second collecting hopper, and the second dust bucket contains falling dust.

Furthermore, the dust remover also comprises a turning plate rotatably arranged in the collecting hopper, the collecting hopper is divided into an upper cavity and a lower cavity when the turning plate is horizontal, a rotating shaft is arranged on the turning plate, and the turning plate is rotatably connected with the collecting hopper through the rotating shaft; the baffle plate is positioned on one side of the counterweight block away from the rotating shaft, and the baffle plate is partially shielded at the edge of the baffle plate.

The turning plate forms a lever structure, and when the weight of dust on the turning plate is larger than that of the balancing weight, the turning plate turns the dust to fall into the dust barrel; when the weight of dust on the turning plate is smaller than that of the balancing weight, the turning plate returns to be kept horizontal and divides the collecting hopper into an upper cavity and a lower cavity.

Furthermore, a hasp is arranged at the communication part of the collecting hopper and the dust barrel, and the hasp realizes the detachable connection of the collecting hopper and the dust barrel.

Further, the pulse back flushing assembly comprises: the device comprises a gas storage tube, a pulse valve and a back-blowing tube;

the gas storage pipe is fixedly arranged on the side wall of the pulse chamber and stores high-pressure gas; the pulse valve is fixedly arranged on the gas storage pipe, is communicated with the gas storage pipe, can be opened and closed to control the flow of high-pressure gas, and is electrically connected with the controller; one end of the back-blowing pipe corresponds to the outlet end of the filter cylinder, the other end of the back-blowing pipe is communicated with the gas storage pipe through the pulse valve, and the back-blowing pipe is fixedly connected with the pulse valve;

the controller controls intermittent opening of the pulse valve, so that high-pressure gas flows from the gas storage pipe to the back blowing pipe, the high-pressure gas is blown out from the back blowing pipe, waste gas cannot enter from the air inlet under the action of negative pressure generated by the negative pressure fan, and the high-pressure gas blows off dust on the filter cylinder.

Further, a silencer is arranged between the air outlet end of the negative pressure fan and the air outlet, and the silencer comprises a hollow shell and a sound absorbing sponge; the sound-absorbing sponge is filled in the shell, the shell is provided with two openings, one opening is connected with the air outlet end of the negative pressure fan, and the other opening is connected with the air outlet.

Further, the side wall of the case is provided with an opening, the opening is separated from the air inlet and the air outlet, the opening is communicated with the filtering chamber, the opening corresponds to the dust barrel, a first case cover is arranged at the opening, the opening is blocked by the first case cover, the first case cover is detachably connected with the case, and the dust barrel can be taken out to pour dust after the first case cover is opened.

Further, the side wall of the case is provided with an opening, the opening is separated from the air inlet and the air outlet, the opening is communicated with the filter chamber, the opening corresponds to the filter screen and the filter cartridge, a second case cover is arranged at the opening, the second case cover seals the opening and is detachably connected with the case, and the filter screen and the filter cartridge can be cleaned and replaced after the second case cover is opened.

The beneficial effects are that:

the cyclone separator is arranged in the first step, waste gas is filtered for the first time through the cyclone separator, and large-particle dust is separated out under the action of centrifugal force and gravity, and the filtering mode has high separation efficiency on the large-particle dust; the application is provided with the filter screen, and the waste gas is filtered for the second time through the filter screen to filter out the dust of medium particles, fiber dust and sticky dust; the application sets a filter cartridge, and the waste gas is filtered for the third time by the filter cartridge to filter out small-particle dust; the combination of the three types of filtering modes is used for filtering the waste gas for three times aiming at dust particles with different characteristics, so that the effects of high efficiency and clean purification are achieved.

And secondly, the application is provided with a pulse back-blowing component, and high-pressure gas is intermittently back-blown, so that dust on the filter cartridge is blown off, and the filter cartridge is prevented from being blocked by the dust to influence filtration.

Third, this application sets up turns over the board, turns over the opening that the board avoids collecting the fill and normally opens, prevents that the dust in the dust bucket from being by cyclone suck-back influence filter effect to turn over the board and can overturn voluntarily, do not influence the dust and fall into in the dust bucket.

Fourth, this application sets up the muffler, reduces the noise of dust shaker.

Fifth, this application sets up openable case lid, makes things convenient for the clearance and the change of filter screen and filter cartridge.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of a dust collector according to the present disclosure;

FIG. 2 is a top view of one of the disclosed dust collectors;

FIG. 3 is a cross-sectional view taken along section A-A of FIG. 2;

fig. 4 is a schematic structural view of a turnover structure of a dust remover according to the present disclosure;

FIG. 5 is a side view of a turnover structure of a dust collector of the present disclosure;

FIG. 6 is a top view of a second embodiment of a dust collector of the present utility model;

FIG. 7 is a cross-sectional view of section B-B of FIG. 6;

FIG. 8 is a top view of a third embodiment of a dust collector of the present disclosure;

FIG. 9 is a cross-sectional view of section C-C of FIG. 8;

fig. 10 is a schematic structural view of a silencer of a dust collector according to the present disclosure.

1. A chassis; 11. a first filtering chamber; 111. a first cover; 112. a second cover; 12. a second filtering chamber; 13. a third filter chamber; 14. a pulse chamber; 15. an air inlet; 16. an air outlet;

2. a cyclone separator; 21. a cylinder; 22. an air inlet pipe; 23. a cone cylinder; 24. an exhaust pipe; 25. a first collection hopper; 26. a first dust barrel;

3. a filter screen;

4. a filter cartridge;

5. a negative pressure fan;

6. a pulse back-flushing assembly; 61. a gas storage tube; 62. a pulse valve; 63. a blowback pipe;

7. a controller;

8. a collection assembly; 81. a second collection hopper; 811. a flap structure; 82. a second dust barrel;

9. a turnover structure; 91. a frame; 92. turning plate; 93. a rotating shaft; 94. balancing weight; 95. a baffle;

10. a hasp;

20. a muffler; 201. a housing; 202. and (5) a sound-absorbing sponge.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, 2 and 3, a dust remover includes: the cyclone separator comprises a machine case 1, a cyclone separator 2, a filter screen 3, a filter cartridge 4, a negative pressure fan 5, a pulse back-blowing assembly 6 and a controller 7.

The case 1 is a rectangular case with a hollow interior, and a first filtering chamber 11, a second filtering chamber 12, a third filtering chamber 13 and a pulse chamber 14 are sequentially arranged in the case 1 along the flow direction of the waste gas; the second filter chamber 12 and the third filter chamber 13 are communicated with each other to form a rectangular cavity, and two adjacent side walls of the rectangular cavity formed by the second filter chamber 12 and the third filter chamber 13 are respectively adjacent to the first filter chamber 11 and the impulse chamber 14; the filter screen 3 is arranged in the cuboid cavity, the second filter chamber 12 is positioned above the filter screen 3, the third filter chamber 13 is positioned below the filter screen 3, and the volume of the second filter chamber 12 is smaller than that of the third filter chamber 13. The rib plates are arranged around the lower part of the second filtering chamber 12, 16 threaded holes are formed in the rib plates, corresponding 16 circular through holes are formed in the filtering screen 3, screws are arranged in the corresponding circular through holes and the threaded holes, the filtering screen 3 is fixed on the rib plates by tightening the screws, and the detachable connection of the filtering screen 3 and the second filtering chamber 12 is achieved.

An air inlet 15 is formed in the upper part of the side wall of the first filtering chamber 11, which faces away from the second filtering chamber 12, and an air outlet 16 is formed in the side wall of the case 1, which is positioned below the pulse chamber 14 and faces away from the filtering chamber; the negative pressure fan 5 is arranged in the case 1, the negative pressure fan 5 is positioned below the pulse chamber 14, the negative pressure fan 5 is provided with an air inlet end and an air outlet end, the air inlet end is communicated with the pulse chamber 14, and the air outlet end is communicated with the air outlet 16; the negative pressure fan 5 generates negative pressure to enable waste gas to enter from the air inlet 15, and the waste gas is discharged from the air outlet 16 after being filtered by the cyclone separator 2, the filter screen 3 and the filter cartridge 4 in sequence.

The cyclone separator 2 is arranged in the first filtering chamber 11, the air inlet 15 is communicated with the second filtering chamber 12 through the cyclone separator 2, and the cyclone separator 2 preliminarily filters large-particle dust by utilizing centrifugal force and gravity; the waste gas entering the second filtering chamber 12 is filtered by the filter screen 3, dust of medium particles, fiber dust and sticky dust in the gas are filtered, and the filtered gas enters the third filtering chamber 13; the filter cartridge 4 is arranged in the third filter chamber 13, the filter cartridge 4 is of a cylindrical structure with one end open, the cylindrical surface part of the filter cartridge 4 is a filter surface, the gas passes through the filter surface from the outside to filter out small particle dust, the open end of the filter cartridge 4 is a filtered outlet end, and the gas passes through the filter surface from the outside to enter the pulse chamber 14 from the outlet end.

The pulse back-blowing component 6 is arranged in the pulse chamber 14, the pulse back-blowing component 6 stores high-pressure gas, the pressure of the high-pressure gas is larger than the negative pressure generated by the negative pressure fan 5, the pulse back-blowing component 6 intermittently blows out the high-pressure gas in the direction opposite to the flow direction of the waste gas, when the pulse back-blowing component 6 blows out the high-pressure gas, the waste gas cannot enter from the air inlet 15 under the negative pressure effect generated by the negative pressure fan 5, and the high-pressure gas blows off dust on the filter cylinder 4, so that the dust is prevented from blocking the filter cylinder 4, and the filtering efficiency is affected.

The controller 7 is located the region that first filter chamber 11 and pulse room 14 press from both sides, and the controller 7 sets firmly on quick-witted case 1, and negative pressure fan 5 and pulse blowback subassembly 6 adopt the electricity to be connected with the controller 7 respectively, and controller 7 controls negative pressure fan 5 and pulse blowback subassembly 6 and opens and close. When the controller 7 controls the negative pressure fan 5 to start, the negative pressure fan 5 generates negative pressure so that waste gas enters from the air inlet 15; when the controller 7 controls the pulse back-flushing assembly 6 to be intermittently started, the pulse back-flushing assembly 6 intermittently blows out the stored high-pressure gas.

As shown in connection with fig. 2 and 3, the cyclone separator 2 comprises: a cylinder 21, an air inlet pipe 22, a cone cylinder 23, an exhaust pipe 24, a first collecting hopper 25 and a first dust barrel 26.

The cylinder 21 is vertically arranged, and the center of the lower end opening and the upper end of the cylinder 21 is provided with an opening; the cylindrical air inlet pipe 22 is inserted into the air inlet 15, the air inlet pipe 22 is intersected with the outer circumferential surface of the cylinder 21 along the tangential direction of the cylinder 21, and the position of the intersection of the cylinder 21 and the air inlet pipe 22 is provided with a abdication, so that the air inlet pipe 22 is communicated with the cylinder 21; the exhaust gas enters the inside of the cylindrical body 21 through the air inlet pipe 22 in the tangential direction of the cylindrical body 21, flows along the inner wall of the cylindrical body 21 under the influence of the shape of the inner wall of the cylindrical body 21, changes the flow direction of the exhaust gas from linear motion to rotary motion, and spirally descends under the influence of the fluid pressure and the shape of the inner wall of the cylindrical body 21.

The cone cylinder 23 is of a truncated cone structure with two open ends, the cone cylinder 23 is vertically arranged, one open end with a larger diameter of the cone cylinder 23 is butted with the lower open end of the cylinder 21 and is fixedly arranged together, the cone cylinder 23 is communicated with the cylinder 21, and the cylinder 21 and the cone cylinder 23 are combined to form a main structure of cyclone separation gas; the waste gas flows downwards spirally from the cylinder 21 towards the cone cylinder 23 along the wall, the dust with large particles is thrown towards the wall of the container under the action of centrifugal force, and once the dust particles are contacted with the wall, the inertia force is lost, and the dust particles fall down along the wall surface under the influence of gravity; the exhaust gas from the rotation down flows continuously into the central part during the down process, forming a centripetal radial air flow, which constitutes an upward rotation, and flows upward from the centers of the cylinder 21 and the cone cylinder 23.

One end of the exhaust pipe 24 is fixedly connected with an opening at the center of the upper end of the cylinder 21, and the other end is fixedly connected with the second filtering chamber 12, so that the cylinder 21 is communicated with the second filtering chamber 12, and the exhaust pipe 24 enables filtered waste gas flowing upwards from the centers of the cylinder 21 and the cone cylinder 23 to enter the second filtering chamber 12 for the next filtering.

The first collection fill 25 is fixedly arranged at the lower end of the cone cylinder 23, the upper end of the first collection fill 25 is abutted against the opening of the cone cylinder 23, so that the first collection fill 25 is communicated with the cone cylinder 23, the first collection fill 25 is of a square fill-shaped structure with an opening at the lower end, and the first collection fill 25 gathers dust falling from the opening at the lower end of the cone cylinder 23.

The first dust bucket 26 is arranged below the first collecting hopper 25, the opening of the first dust bucket 26 corresponds to the lower end opening of the first collecting hopper 25, and the first dust bucket 26 contains dust falling from the first collecting hopper 25.

The both sides at the intercommunication position of first collection fill 25 and first dust bucket 26 are provided with hasp 10 respectively, and hasp 10 includes knot body and hook piece, and the hook piece sets firmly on first collection fill 25, detains the body and sets firmly on first dust bucket 26, and hasp 10 realizes that first collection fill 25 and first dust bucket 26 can dismantle the connection, fixes both together and realizes collecting the dust, can take out first dust bucket 26 after dismantling and empty the dust.

As shown in fig. 3, 4 and 5, the first collecting hopper 25 is further provided with a turnover structure 9 therein to prevent dust from being sucked back; the turning structure 9 includes: frame 91, flap 92, shaft 93, weight 94 and baffle 95; the frame 91 is fixedly arranged in the first collecting hopper 25, the frame 91 is horizontally arranged in the middle of the first collecting hopper 25, the periphery of the frame 91 is attached to the inner wall of the first collecting hopper 25, a rectangular opening is formed in the middle of the frame 91, the turning plate 92 is rotatably arranged in the rectangular opening of the frame 91, the shape of the turning plate 92 is matched with that of the rectangular opening of the frame 91, and when the turning plate 92 is horizontal, the frame 91 and the turning plate 92 are matched together to seal the opening of the first collecting hopper 25; the rotating shaft 93 is arranged at one third of the length direction of the turning plate 92, the rotating shaft 93 is arranged along the width direction of the turning plate 92, and the turning plate 92, the rotating shaft 93 and the frame 91 are hinged together, so that the turning plate 92 can rotate in a rectangular opening with the frame 91 through the rotating shaft 93; the length direction of the turning plate 92 is divided into a long section and a short section by a rotating shaft 93, a balancing weight 94 is fixedly arranged in the middle of the short section of the turning plate 92, and the balancing weight 94 is positioned on one surface of the turning plate 92, which is opposite to dust; the baffle 95 is fixed on the frame 91, the baffle 95 is horizontally arranged, and the baffle 95 is arranged below the frame 91, so that the baffle 95 blocks the edge of the short section of the turning plate 92 from below.

Under the action of the rotating shaft 93, the balancing weight 94, the baffle 95 and dust, the turning plate 92 forms a lever structure, when the moment generated by the dust on the long section of the turning plate 92 is smaller than the moment generated by the dust on the short section of the turning plate 92 and the balancing weight 94 together, the edge of the lower surface of the turning plate 92 is contacted with the edge of the upper surface of the baffle 95, so that the opening of the first collecting hopper 25 is horizontally sealed by the turning plate 92; when the moment generated by the dust on the long section of the turning plate 92 is larger than the moment generated by the dust on the short section of the turning plate 92 and the balancing weight 94 together, the turning plate 92 turns over, the balancing weight 94 is lifted up, the opening of the first collecting hopper 25 is leaked, the dust on the turning plate 92 falls down, and the falling-back of the dust on the turning plate 92 falls back to be kept horizontal under the action of the balancing weight 94.

As shown in fig. 3, 6 and 7, a collecting assembly 8 is disposed below the third filtering chamber 13, and the collecting assembly 8 includes: a second collection hopper 81 and a second dust bucket 82; the second collecting hopper 81 is fixedly arranged at the lower end of the third filtering chamber 13, the lower end of the third filtering chamber 13 is provided with a square hopper-shaped structure with an opening at the lower end, the second collecting hopper 81 is communicated with the second collecting hopper 81, and the second collecting hopper 81 gathers the fallen dust; the second collecting bucket 81 is provided with a flap structure 811, and the specific structure of the flap structure 811 is the same as the above-mentioned flap structure 9, and will not be repeated here. The second dust bucket 82 is disposed below the second collecting bucket 81, and the mouth of the second dust bucket 82 corresponds to the lower end opening of the second collecting bucket 81, and the second dust bucket 82 receives dust falling from the second collecting bucket 81.

The hasp 10 is arranged on two sides of the communicating part of the second collecting hopper 81 and the second dust barrel 82 respectively, the hasp 10 comprises a buckle body and a hook piece, the hook piece is fixedly arranged on the second collecting hopper 81, the buckle body is fixedly arranged on the second dust barrel 82, the hasp 10 realizes detachable connection of the second collecting hopper 81 and the second dust barrel 82, the two parts are fixed together to collect dust, and the second dust barrel 82 can be taken out to dump the dust after the two parts are detached.

As shown in fig. 7, 8 and 9, the pulse back-flushing assembly 6 includes: a gas storage pipe 61, a pulse valve 62 and a blowback pipe 63; the gas storage tube 61 is a square long tube, high-pressure gas is stored in the gas storage tube 61, the pressure of the high-pressure gas is larger than the negative pressure generated by the negative pressure fan 5, and the gas storage tube 61 is vertically fixed on the side wall of the pulse chamber 14 relative to the third filter chamber 13; the air inlet end of the pulse valve 62 is fixedly arranged on the air storage pipe 61 and is communicated with the air storage pipe 61, the air outlet end of the pulse valve 62 is fixedly communicated with the air inlet end of the back blowing pipe 63, and the pulse valve 62 can be opened and closed to control the flow of high-pressure gas; the pulse valve 62 is electrically connected with the controller 7, the controller 7 controls the intermittent opening of the pulse valve 62 to enable high-pressure gas to flow from the gas storage pipe 61 to the back-blowing pipe 63, the gas outlet end of the back-blowing pipe 63 corresponds to the outlet end of the filter cartridge 4, the high-pressure gas is blown out from the back-blowing pipe 63 in the direction opposite to the flowing direction of the waste gas, the waste gas cannot enter from the air inlet 15 under the negative pressure effect generated by the negative pressure fan 5, and the high-pressure gas blows dust on the filter cartridge 4; the controller 7 controls the pulse valve 62 to be closed, the high-pressure gas stops blowing out, and when the exhaust gas overflows from the outlet end of the filter cartridge 4 after being filtered, the high-pressure gas enters the negative pressure fan 5 along with the filtered gas and is discharged.

Preferably, as shown in fig. 8, 9 and 10, a muffler 20 is arranged between the air outlet end of the negative pressure fan 5 and the air outlet 16, and the muffler 20 comprises a hollow shell 201 and a sound absorbing sponge 202; the sound-absorbing sponge 202 is filled in the shell 201, the shell 201 is provided with two openings, one opening is connected with the air outlet end of the negative pressure fan 5, the other opening is connected with the air outlet 16, and filtered air is discharged through the sound-absorbing sponge 202, so that noise generated when the negative pressure fan 5 is out is absorbed and weakened.

Preferably, as shown in fig. 8 and 9, an opening is formed in a position, opposite to the dust barrel, on the case 1, and a first case cover 111 is provided to seal the opening, screws are disposed around the first case cover 111 and are in threaded connection with the case 1, and after the screws are unscrewed to remove the first case cover 111, the dust barrel can be taken out to dump dust.

Preferably, as shown in fig. 8 and 9, an opening is formed on the side wall of the case 1 facing away from the pulse chamber 14, the second filtering chamber 12 and the third filtering chamber 13 are mutually communicated to form a rectangular cavity and are communicated with the opening, the filter screen 3 and the filter cartridge 4 are leaked out from the opening range, a second case cover 112 is arranged to seal the opening, the second case cover 112 is rotationally connected with the case 1 by adopting a hinge, the second case cover 112 is locked with the case 1 by adopting a case lock, and the filter screen 3 and the filter cartridge 4 can be cleaned and replaced after the second case cover 112 is opened.

Principle of the device:

the controller 7 controls the negative pressure fan 5 to start, the negative pressure fan 5 generates negative pressure to enable waste gas to enter from the air inlet 15, the waste gas enters the cyclone separator 2 from the air inlet 15 along the tangential direction of the cylinder 21, then makes rotary motion from top to bottom along the wall of the cyclone separator 2, reaches the bottom of the cone cylinder 23 and rotates upwards along the axis, large-particle dust is separated from the waste gas by centrifugal force generated by air flow rotation, the large-particle dust falls into the first dust barrel 26, the reverse suction of the dust is prevented by the turning plate 92 in the first collecting hopper 25, and the first filtering is realized; the gas after the first filtering enters the second filtering chamber 12 through the exhaust pipe 24, and the filter screen 3 filters off the dust of medium particles, fiber dust and sticky dust in the gas to realize the second filtering; the gas after the second filtering enters the third filtering chamber 13, the filter cylinder 4 filters out the dust of small particles in the gas, the third filtering of the gas is realized, the dust falls into the second dust barrel 82, and the reverse suction of the dust is prevented by the turning plate in the second collecting hopper 81. The waste gas becomes clean gas after three times of filtration, the gas after three times of purification enters the pulse chamber 14 from the outlet end of the filter cartridge 4, the clean gas enters from the air inlet end of the negative pressure fan 5, is discharged from the air outlet end of the negative pressure fan 5, is silenced by a silencer, and finally is discharged from the dust remover through the air outlet 16.

When excessive dust adheres to the surface of the filter cartridge 4, the controller 7 controls the pulse valve 62 to open at this time, and the high-pressure gas in the gas storage pipe 61 is sprayed into the filter cartridge 4 to blow off the dust on the filter cartridge 4, and the dust falls into the second dust barrel 82, so that the filter cartridge 4 is prevented from being blocked by the dust, and the purification efficiency and the purification effect are affected.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. A dust collector, comprising: the cyclone separator comprises a case (1), a cyclone separator (2), a filter screen (3), a filter cartridge (4), a negative pressure fan (5), a pulse back-blowing component (6) and a controller (7);

a first filtering chamber (11), a second filtering chamber (12), a third filtering chamber (13) and a pulse chamber (14) are sequentially arranged in the chassis (1) along the flowing direction of the waste gas; an air inlet (15) and an air outlet (16) are formed in the side wall of the case (1);

the cyclone separator (2) is arranged in the first filtering chamber (11), the air inlet (15) is communicated with the second filtering chamber (12) through the cyclone separator (2), and the cyclone separator (2) utilizes centrifugal force and gravity to preliminarily filter large-particle dust;

the filter screen (3) is detachably arranged between the second filter chamber (12) and the third filter chamber (13), and waste gas enters the third filter chamber (13) after being filtered by the filter screen (3);

the filter cartridge (4) is arranged in the third filter chamber (13), the filter cartridge (4) is provided with a filter surface and an outlet end, and the waste gas enters the pulse chamber (14) from the outlet end after being filtered by the filter surface;

the negative pressure fan (5) is arranged in the case (1), the negative pressure fan (5) is provided with an air inlet end and an air outlet end, the air inlet end is communicated with the pulse chamber (14), the air outlet end is communicated with the air outlet (16), the negative pressure fan (5) generates negative pressure to enable waste gas to enter from the air inlet (15), and the waste gas is discharged from the air outlet (16) after being filtered by the cyclone separator (2), the filter screen (3) and the filter cartridge (4) in sequence;

the pulse back-blowing assembly (6) is arranged in the pulse chamber (14), the pulse back-blowing assembly (6) stores high-pressure gas with the pressure being greater than the negative pressure generated by the negative pressure fan (5), the pulse back-blowing assembly (6) intermittently blows out the high-pressure gas in the direction opposite to the flow direction of the waste gas, and when the pulse back-blowing assembly (6) blows out the high-pressure gas, the waste gas cannot enter from the air inlet (15) under the action of the negative pressure generated by the negative pressure fan (5), and the high-pressure gas blows off dust on the filter cylinder (4);

the negative pressure fan (5) and the pulse back-blowing component (6) are respectively electrically connected with the controller (7), and the controller (7) controls the negative pressure fan (5) and the pulse back-blowing component (6) to be opened and closed.

2. A dust collector as claimed in claim 1, characterized in that the cyclone separator (2) comprises: a cylinder (21), an air inlet pipe (22), a cone cylinder (23), an exhaust pipe (24), a first collecting hopper (25) and a first dust barrel (26);

the cylinder body (21) is of a cylindrical structure with two ends open, and the cylinder body (21) is vertically arranged; the air inlet pipe (22) is fixedly arranged on the outer circumferential surface of the cylinder body (21) along the tangential direction of the cylinder body (21), the cylinder body (21) is communicated with the air inlet pipe (22), and the cylinder body (21) is communicated with the air inlet (15) through the air inlet pipe (22);

the cone cylinder (23) is of a truncated cone structure with two open ends, the cone cylinder (23) is fixedly arranged at the lower end of the cylinder (21), and one open end with a large diameter of the cone cylinder (23) is in butt joint with the lower open end of the cylinder (21) so that the cone cylinder (23) is communicated with the cylinder (21);

the exhaust pipe (24) is fixedly arranged at the upper end of the cylinder body (21), one end of the exhaust pipe (24) is communicated with an opening at the upper end of the cylinder body (21), and the other end of the exhaust pipe is communicated with the second filtering chamber (12);

the waste gas enters the cylinder (21) along the tangential direction of the cylinder (21) through the air inlet pipe (22) to perform rotary motion, dust is separated from the waste gas by centrifugal force generated by the rotation of the waste gas, the dust falls down under the gravity, and the filtered waste gas is discharged from the exhaust pipe (24);

the first collecting hopper (25) is fixedly arranged at the lower end of the cone cylinder body (23), the first collecting hopper (25) is communicated with the cone cylinder body (23), and the first collecting hopper (25) gathers up falling dust;

the first dust barrel (26) is arranged below the first collecting hopper (25), and the first dust barrel (26) is used for containing falling dust.

3. A dust collector as claimed in claim 1, wherein a rib plate is arranged on one side of the second filter chamber (12) close to the third filter chamber (13), at least two threaded holes are arranged on the rib plate, corresponding circular through holes are arranged on the filter screen (3), screws are arranged in the threaded holes, and each screw penetrates through the corresponding circular through hole and then is screwed into the corresponding threaded hole, so that the filter screen (3) is fixed on the rib plate.

4. A dust collector as claimed in claim 1, wherein a collecting assembly (8) is provided below the third filter chamber (13), the collecting assembly (8) comprising: a second collection hopper (81) and a second dust bucket (82);

the second collecting hopper (81) is fixedly arranged at the lower end of the third filtering chamber (13), the lower end of the third filtering chamber (13) is provided with a yielding position communicated with the second collecting hopper (81), and the second collecting hopper (81) gathers down dust; the second dust barrel (82) is arranged below the second collecting hopper (81), and the second dust barrel (82) is used for containing falling dust.

5. The dust collector as set forth in claim 2 or 4, further comprising a flap (92) rotatably disposed inside the collecting hopper, wherein the flap (92) divides the collecting hopper into an upper cavity and a lower cavity when the flap (92) is horizontal, a rotating shaft (93) is disposed on the flap (92), and the flap (92) is rotatably connected with the collecting hopper through the rotating shaft (93); the dust bucket is characterized in that the turning plate (92) is fixedly provided with a balancing weight (94), the inner wall of the collecting hopper is fixedly provided with a baffle (95), the balancing weight (94) and the baffle (95) are both positioned on one side of the turning plate (92) facing the dust bucket, the baffle (95) is positioned on one side of the balancing weight (94) away from the rotating shaft (93), and the baffle (95) is partially shielded at the edge of the turning plate (92);

the turning plate (92) forms a lever structure, and when the moment generated by the weight of dust on the turning plate (92) overcomes the moment generated by the weight of the balancing weight (94), the turning plate (92) turns the dust to fall into the dust barrel; when the moment generated by the weight of dust on the turning plate (92) is smaller than the moment generated by the weight of the balancing weight (94), the turning plate (92) returns to be kept horizontal and divides the collecting hopper into an upper cavity and a lower cavity.

6. A dust collector as claimed in claim 2 or 4, characterized in that a snap (10) is provided at the connection of the collecting hopper and the dust barrel, said snap (10) realizing a detachable connection of the collecting hopper and the dust barrel.

7. A dust collector as claimed in claim 1, characterized in that the pulse back-flushing assembly (6) comprises: a gas storage pipe (61), a pulse valve (62) and a blowback pipe (63);

the gas storage pipe (61) is fixedly arranged on the side wall of the pulse chamber (14), and the gas storage pipe (61) stores high-pressure gas with the pressure greater than the negative pressure generated by the negative pressure fan (5);

the pulse valve (62) is fixedly arranged on the gas storage pipe (61), the pulse valve (62) is communicated with the gas storage pipe (61), the pulse valve (62) can be opened and closed to control the flow of high-pressure gas, and the pulse valve (62) is electrically connected with the controller (7);

one end of the back-flushing pipe (63) corresponds to the outlet end of the filter cylinder (4), the other end of the back-flushing pipe is communicated with the gas storage pipe (61) through the pulse valve (62), and the back-flushing pipe (63) is fixedly connected with the pulse valve (62); the controller (7) controls intermittent opening of the pulse valve (62) to enable high-pressure gas to flow from the gas storage pipe (61) to the back-blowing pipe (63), the high-pressure gas is blown out from the back-blowing pipe (63), waste gas cannot enter from the air inlet (15) under the action of negative pressure generated by the negative pressure fan (5), and the high-pressure gas blows dust on the filter cylinder (4).

8. A dust collector as claimed in claim 1, characterized in that a silencer (20) is arranged between the air outlet end of the negative pressure fan (5) and the air outlet (16), the silencer (20) comprising a housing (201) with a hollow interior and a sound absorbing sponge (202); the sound absorbing sponge (202) is filled in the shell (201), the shell (201) is provided with two openings, one opening is connected with the air outlet end of the negative pressure fan (5), and the other opening is connected with the air outlet (16).

9. A dust collector as claimed in claim 2 or 4, characterized in that the side wall of the casing (1) is provided with an opening, the opening is separated from the air inlet (15) and the air outlet (16), the opening is communicated with the filtering chamber, the opening corresponds to the dust barrel, a first cover (111) is arranged at the opening, the first cover (111) seals the opening, the first cover (111) is detachably connected with the casing (1), and the dust barrel can be taken out to dump dust after the first cover (111) is opened.

10. A dust collector as claimed in claim 1, characterized in that the side wall of the casing (1) is provided with an opening, the opening is separated from the air inlet (15) and the air outlet (16), the opening is communicated with the filter chamber, the opening corresponds to the filter screen (3) and the filter cartridge (4), a second casing cover (112) is arranged at the opening, the second casing cover (112) is used for blocking the opening, the second casing cover (112) is detachably connected with the casing (1), and the filter screen (3) and the filter cartridge (4) can be cleaned and replaced after the second casing cover (112) is opened.