CN111451240A

CN111451240A - Scalable building dust collector who turns to

Info

Publication number: CN111451240A
Application number: CN202010345483.4A
Authority: CN
Inventors: 刘俊香
Original assignee: Xinchang Medi Environmental Protection Technology Co ltd
Current assignee: Xinchang Medi Environmental Protection Technology Co ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-07-28

Abstract

The invention discloses a telescopic steering building dust removal device which comprises an installation box, wherein an installation cavity with an opening is arranged in the installation box, a steering mechanism is arranged in the installation cavity, the steering mechanism comprises a rotating shaft rotatably arranged in the front end wall of the installation cavity, the rear end of the rotating shaft is rotatably provided with a rotating block, a connecting cavity is arranged in the rotating block, and a ventilator for extracting dust is fixedly arranged in the connecting cavity. The dust extraction cover can move to a required position, the dust extraction cover is required to surround or be close to a dust generation source, the dust is limited in a smaller space, the extension position of the dust extraction cover can be adjusted during collection and control, the dust extraction cover is effectively close to the dust generation source, the extraction range can be enlarged as far as possible, and the dust extraction effect is better.

Description

Scalable building dust collector who turns to

Technical Field

The invention relates to the technical field of building dust removal devices, in particular to a telescopic steering building dust removal device.

Background

Dust removal in buildings is a local mechanical exhaust system that captures and purifies dust generated during the production process. And (3) collecting the dust-containing gas generated in the technical process by using a dust extraction cover, and conveying the collected dust-containing gas into the dust removal equipment along an air channel under the action of a fan. When the dust is collected on site, the steering can not be adjusted according to the required position, and the dust extraction cover is required to surround or be close to a dust generation source as much as possible, so that the dust is limited in a smaller space to facilitate the collection and control, and the normal dust removal of the filter element is required to be ensured when the dust is extracted, so that the filter element is prevented from being adsorbed with excessive dust and not being adsorbed, and the good dust removal effect can not be achieved.

Disclosure of Invention

Aiming at the technical defects, the invention provides a telescopic steering building dust removal device which can overcome the defects.

The invention relates to a telescopic steering building dust removal device, which comprises an installation box, wherein an installation cavity with an opening is arranged in the installation box, a steering mechanism is arranged in the installation cavity, the steering mechanism comprises a rotating shaft rotatably arranged in the front end wall of the installation cavity, the rear end of the rotating shaft is rotatably provided with a rotating block, a connecting cavity is arranged in the rotating block, a ventilator for extracting dust is fixedly arranged in the connecting cavity, an extension mechanism is arranged in the installation cavity, the extension mechanism comprises a concave rotating cavity arranged in the rotating block, push blocks are vertically and symmetrically slidably arranged in the rotating cavity, an upper extension spring which is symmetrical relative to the ventilator is vertically and fixedly connected between the left end surface of the push block and the left end wall of the rotating cavity, and a horn-shaped dust extraction block is fixedly arranged on the front end surface of the push block on the upper side and the lower side, the dust exhaust device is characterized in that an annular pushing cavity is arranged in the dust exhaust block, eight exhaust plates are arranged in the pushing cavity in an annular array mode by taking the rotating block as the center, racks are fixedly arranged on the outer end faces of the exhaust plates, stretchable rubber films are fixedly connected among the exhaust plates, racks are fixedly arranged on the outer end faces of the exhaust plates, exhaust springs which are symmetrical relative to the ventilator are fixedly connected between the left end faces of the exhaust plates and the left end wall of the pushing cavity in an up-and-down mode, connecting grooves are formed in the front end face and the rear end face of the dust exhaust block, a pushing mechanism is arranged in the installing cavity and comprises a dust storage box fixedly mounted on the bottom end wall of the installing cavity, a dust storage cavity is arranged in the dust storage box, dust storage grooves are symmetrically arranged in the front and rear of the outer end wall of the dust storage cavity, filter plates are slidably mounted in the dust storage grooves, and connecting springs which are symmetrical relative to the filter plates are fixedly connected between the, and a collecting mechanism is arranged in the mounting cavity.

Preferably, steering mechanism still includes fixed mounting and is in the motor of installation cavity bottom face, the driving shaft is connected to motor upper end power, fixed mounting has drive gear on the driving shaft, be equipped with the fixed slot in the terminal surface before the installation cavity, slidable mounting has the fixed block in the fixed slot, end wall fixed mounting has the electro-magnet under the fixed slot, the fixed block up end with fixedly connected with drive spring between the fixed slot upper end wall, the spline housing is installed to the fixed block internal rotation, spline housing internal spline is connected with the integral key shaft, on the integral key shaft fixed mounting with go up bevel gear meshing's lower bevel gear.

Preferably, the stretching mechanism further comprises an air pump fixedly mounted on the upper end face of the rotating block, the left end of the air pump is connected with a left connecting pipe connected to the rotating cavity, the right end of the air pump is connected with a right connecting pipe connected to the pushing cavity and capable of contracting, and the left end face of the rotating block is fixedly mounted with a telescopic pipe connected to the dust storage cavity and capable of stretching.

Preferably, it still includes fixed mounting to stretch out the mechanism the case that blocks of dust extraction piece downside cambered surface, it blocks the incasement and is equipped with the chamber to block, block intracavity slidable mounting have pass through the spread groove can with the block that blocks of rack butt and being equipped with the inclined plane, block case lower extreme facial features rotate install with block terminal surface fixed connection's adjustment axle under the piece, block under the piece terminal surface with block under the chamber fixed connection center on the adjustment spring of adjustment axle, adjustment axle lower extreme fixed mounting has and is located block the outer rotation handle of case.

Preferably, pushing mechanism still installs including rotating the promotion axle in the installation chamber bottom wall, promote epaxial fixed mounting have with drive gear meshed promotion gear, promote gear up end fixed mounting have the connecting rod that is located the centre of a circle right side, be equipped with the right side in the storage dirt case left end face and push away the mouth, slidable mounting has the adsorption block in the right side pushes away, adsorption block left end face fixed mounting has magnetic inclined plane piece, on the connecting rod fixed mounting have with the connecting block of the articulated installation of adsorption block right-hand member face, be equipped with the groove of opening a door in the storage dirt chamber left end wall, the inslot slidable mounting that opens a door have magnetism and inclined plane with the right side sliding block that the inclined plane piece is repellent, under the right side sliding block terminal surface with fixedly connected with door opening spring between the lower end wall of opening a door groove.

Preferably, the collecting mechanism comprises a collecting box fixedly mounted on the bottom end wall of the mounting cavity, an open-ended collecting cavity is arranged on the right side in the collecting box, a sliding groove is formed in the upper end wall of the collecting cavity, a left sliding block with a slope is mounted in the sliding groove in a sliding mode, a sliding spring is fixedly connected between the left end face of the left sliding block and the left end wall of the sliding groove, a rotating shaft provided with a torsion spring is mounted in the inner rotation of the rear end wall of the collecting cavity, a push rod is fixedly mounted on the rotating shaft, a telescopic block capable of stretching out and drawing back is fixedly mounted on the left end face of the push rod, and a right end face of the telescopic block is hinged to be connected with a.

The beneficial effects are that: the device of the invention can move the dust extraction cover to the required position by adjusting the position of the dust extraction cover, and the dust extraction cover is required to surround or be close to the dust generation source, so that the dust is limited in a smaller space, the extending position of the dust extraction cover can be adjusted during trapping and control, the dust extraction cover is effectively close to the dust generation source, the extraction range can be expanded as much as possible, and the dust extraction effect is better; and to the filter core adsorb the extraction to the dust on the filter core after adsorbing a large amount of dust for the filter core can continuous operation.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic front view of a retractable and steerable building dusting device of the present invention;

FIG. 2 is a schematic structural diagram of A-A in FIG. 1 according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of B-B in FIG. 1 according to an embodiment of the present invention;

FIG. 4 is an enlarged schematic view of the structure at C in FIG. 1 according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of D-D in FIG. 1 according to an embodiment of the present invention.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

The invention will now be described in detail with reference to fig. 1-5, for convenience of description, the following orientations will now be defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to a telescopic steering building dust removal device, which comprises a mounting box 10, wherein a mounting cavity 11 with an opening is arranged in the mounting box 10, a steering mechanism 74 capable of adjusting the position of a dust hood is arranged in the mounting cavity 11 so that the dust hood can rotate and rotate to a required working position is arranged in the mounting cavity, the steering mechanism 74 comprises a rotating shaft 63 rotatably arranged in the front end wall of the mounting cavity 11, a rotating block 24 is rotatably arranged at the rear end of the rotating shaft 63, a connecting cavity 25 is arranged in the rotating block 24, a ventilator 17 for extracting dust separation is fixedly arranged in the connecting cavity 25, an extension mechanism 73 capable of adjusting the extension position during collection and control so as to enable the extension position to be close to a dust generation source and expand the extraction range is arranged in the mounting cavity 11, the extension mechanism 73 comprises a concave rotating cavity 19 arranged in the rotating block 24, it has promotion piece 23 to rotate interior upper and lower symmetry slidable mounting of chamber 19, promote 23 left end face of piece with rotate between the 19 left end wall of chamber about fixedly connected with for the last extension spring 18 of ventilation blower 17 symmetry, go up the downside promote 23 preceding terminal surface fixed mounting of piece has the dirt piece 27 of taking out of loudspeaker form, be equipped with annular promotion chamber 26 in the dirt piece 27, promote intracavity 26 slidable mounting with the turning block 24 is equipped with eight discharge plate 29 for central annular array, discharge plate 29 outside terminal surface fixed mounting has rack 28, the fixedly connected with of each other can tensile between the discharge plate 29 has rubber membrane 90, discharge plate 29 left end face with promote between the 26 left end wall of chamber about fixedly connected with for the discharge spring 30 of ventilation blower 17 symmetry, the terminal surface is equipped with spread groove 55 under the dirt piece 27, be equipped with in the installation cavity 11 and can adsorb the dust and carry out the pushing mechanism who pushes away too much dust on the filter core 75, pushing mechanism 75 includes fixed mounting and is in the dust storage box 14 of 11 bottom end walls of installation cavity, be equipped with dust storage cavity 13 in the dust storage box 14, the symmetry is equipped with dust storage groove 41 around the outer end wall of dust storage cavity 13, and the side is around store up dust groove 41 slidable mounting has filter plate 40, filter plate 40 lower terminal surface with store up dust groove 41 down between the terminal surface around fixed connection for the coupling spring 42 of filter plate 40 symmetry, be equipped with in the installation cavity 11 and scrape the collection mechanism 76 of going and collecting to the dust after pushing away.

Beneficially, the steering mechanism 74 further includes a motor 72 fixedly installed on the bottom end face of the installation cavity 11, an upper end of the motor 72 is in power connection with a driving shaft 71, a transmission gear 70 is fixedly installed on the driving shaft 71, a fixing groove 68 is installed in the front end face of the installation cavity 11, a fixing block 67 is slidably installed in the fixing groove 68, an electromagnet 69 is fixedly installed on a lower end wall of the fixing groove 68, a driving spring 66 is fixedly connected between an upper end face of the fixing block 67 and an upper end wall of the fixing groove 68, a spline sleeve 65 is rotatably installed in the fixing block 67, a spline shaft 31 is connected in the spline sleeve 65, a lower bevel gear 64 meshed with the upper bevel gear 16 is fixedly installed on the spline shaft 31, the fixing block 67 is attracted to move downwards by electrifying the electromagnet 69, so that the spline sleeve 65 moves downwards and is in spline, causing the turning block 24 to be turned and adjusted to the position where it is needed.

Advantageously, the extension mechanism 73 further comprises an air pump 21 fixedly mounted on the upper end surface of the rotary block 24, the left end of the air pump 21 is connected with a left connecting pipe 20 connected to the rotating cavity 19, the right end of the air pump 21 is connected with a right connecting pipe 22 which is connected to the pushing cavity 26 and can be contracted, a telescopic pipe 15 which is connected to the dust storage cavity 13 and can be telescopic is fixedly arranged on the left end surface of the rotating block 24, by pushing the pushing block 23 to the right to the position to be operated through the left connecting pipe 20 when the air pump 21 is activated, so that the dust extraction block 27 can be operated as close as possible to the location where the dust extraction is required, and the discharge plate 29 can move to the right through the right connecting pipe 22, so that the discharge plate 29 enlarges the position needing to be extracted, and the dust generating source is effectively trapped and controlled.

Advantageously, the extending mechanism 73 further comprises a blocking box 57 fixedly installed on the arc surface of the lower side of the dust suction block 27, a blocking cavity 58 is arranged in the blocking box 57, a blocking block 56 which can be abutted against the rack 28 through the connecting groove 55 and is provided with an inclined surface is slidably installed in the blocking cavity 58, an adjusting shaft 60 fixedly connected with the lower end surface of the blocking block 56 is rotatably installed in the lower end surface of the blocking box 57, an adjusting spring 61 surrounding the adjusting shaft 60 is fixedly connected between the lower end surface of the blocking block 56 and the lower end wall of the blocking cavity 58, a rotating handle 59 located outside the blocking box 57 is fixedly installed on the lower end surface of the adjusting shaft 60, and is pushed out rightwards through the discharging plate 29, so that the teeth of the rack 28 push the inclined surface of the blocking block 56 to move downwards, and the blocking block 56 is enabled to jump back and forth up through the elastic force of the adjusting spring 61, and when the discharge plate 29 is extended to a required position, the stop block 56 is made to block the rack 28, so that the discharge plate 29 is kept at a position required to work.

Beneficially, the pushing mechanism 75 further comprises a pushing shaft 36 rotatably installed in the bottom end wall of the installation cavity 11, a pushing gear 35 engaged with the transmission gear 70 is fixedly installed on the pushing shaft 36, a connecting rod 34 located on the right side of the circle center is fixedly installed on the upper end face of the pushing gear 35, a right pushing opening 38 is arranged in the left end face of the dust storage box 14, an adsorption block 37 is installed in the right pushing opening 38 in a sliding manner, a magnetic inclined face block 39 is fixedly installed on the left end face of the adsorption block 37, a connecting block 32 hinged and installed with the right end face of the adsorption block 37 is fixedly installed on the connecting rod 34, an opening door groove 43 is arranged in the left end wall of the dust storage cavity 13, a right sliding block 12 with magnetism and an inclined face and repellent effect of the inclined face block 39 is installed in the opening door groove 43 in a sliding manner, and an opening door spring 44 is fixedly connected between the lower end face of the right sliding block 12, when the pushing gear 35 rotates, the connecting rod 34 rotates around the center of a circle, so that the connecting block 32 pushes the adsorption block 37 to move leftwards to adsorb excessive impurities attached to the filter plate 40, and meanwhile, the inclined block 39 repels the right sliding block 12 and moves downwards to enable the filter plate 40 to continuously operate.

Beneficially, the collecting mechanism 76 includes a collecting box 47 fixedly installed on the bottom end wall of the installation cavity 11, a collecting cavity 48 with an opening on the right side is arranged in the collecting box 47, a sliding groove 53 is arranged in the upper end wall of the collecting cavity 48, a slanted left sliding block 52 is slidably installed in the sliding groove 53, a sliding spring 54 is fixedly connected between the left end surface of the left sliding block 52 and the left end wall of the sliding groove 53, a rotating shaft 50 provided with a torsion spring is rotatably installed on the rear end wall of the collecting cavity 48, a pushing rod 51 is fixedly installed on the rotating shaft 50, a telescopic block 49 capable of being extended and retracted is fixedly installed on the left end surface of the pushing rod 51, a scraping block 45 slidably installed on the right end surface of the collecting cavity 48 is hinged on the right end surface of the telescopic block 49, the slanted block 39 pushes the left sliding block 52 to move leftwards, so that the pushing rod 51 is pushed to rotate around the rotating shaft 50, so that the telescopic block 49 rotates and pushes the scraping and dropping block 45 to move upwards, and the impurities adsorbed by the adsorption block 37 are stripped and dropped into the collection cavity 48.

In the initial state, the slide spring 54 is in an undeformed state, the door opening spring 44 is in an undeformed state, the connecting spring 42 is in an undeformed state, the upper tension spring 18 is in an undeformed state, the discharge spring 30 is in an undeformed state, the adjusting spring 61 is in an undeformed state, and the electromagnet 69 is not energized so that the drive spring 66 is in an undeformed state.

When the device starts to work, the device is pushed to a position needing to work, when the air pump 21 is started, the pushing blocks 23 on the upper side and the lower side drive the dust extraction block 27 to be pushed out rightwards to a position needing to work, so that the dust extraction block 27 can work close to the position needing to be extracted as much as possible, the air pump 21 is started, the discharge plate 29 can move rightwards through the right connecting pipe 22, the discharge plate 29 extends rightwards to the position needing to be extracted, a dust generation source is effectively collected and controlled, the discharge plate 29 is pushed out rightwards, so that the teeth of the rack 28 push the inclined surface of the blocking block 56 to move downwards, the blocking block 56 can bounce back and forth up and down through the elasticity of the adjusting spring 61, and the blocking block 56 blocks the rack 28 to keep the discharge plate 29 at the position needing to work after the discharge plate 29 extends to the position needing to be extracted; when the rotating block 24 needs to turn, the starting motor 72 enables the driving shaft 71 to rotate, the electromagnet 69 is electrified to attract the fixed block 67 to move downwards, the spline sleeve 65 is enabled to move downwards and is in spline connection with the driving shaft 71 to rotate, the spline shaft 31 is enabled to rotate, the spline shaft 31 is in meshing transmission with the upper bevel gear 16 through the lower bevel gear 64, the rotating shaft 63 is enabled to rotate, the rotating block 24 is enabled to rotate, the position needing to work can be adjusted, dust can be better extracted, then the ventilator 17 is started to collect the dust, and the dust is adsorbed on the filter plate 40 through the telescopic pipe 15; when excessive impurities are attached to the filter plate 40 and the rotation direction is adjusted, the driving shaft 71 is in meshing transmission with the pushing gear 35 through the transmission gear 70, so that the pushing shaft 36 rotates, the pushing gear 35 rotates, the connecting rod 34 rotates around the circle center when the impurities are adjusted, the connecting block 32 pushes the adsorption block 37 to move leftwards to adsorb excessive impurities attached to the filter plate 40, meanwhile, the inclined block 39 repels the right sliding block 12 and moves downwards, the inclined block 39 pushes the left sliding block 52 to move leftwards, the left sliding block 52 pushes the pushing rod 51 to rotate around the rotating shaft 50, the telescopic block 49 rotates and pushes the scraping block 45 to move upwards, and the impurities adsorbed by the adsorption block 37 are stripped and fall into the collection cavity 48; when the discharge plate 29 needs to be retracted after the work is finished, the rotating handle 59 is pulled to move downwards, the adjusting shaft 60 is driven to move the stop block 56 downwards, the discharge plate 29 returns to the initial position under the action of the discharge spring 30, and then the motor 72 is stopped to return the device to the initial position.

The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a building dust collector of scalable steering, includes the install bin, its characterized in that: the dust collector is characterized in that an installation cavity with an opening is arranged in the installation box, a steering mechanism is arranged in the installation cavity and comprises a rotating shaft rotatably arranged in the front end wall of the installation cavity, a rotating block is rotatably arranged at the rear end of the rotating shaft, a connecting cavity is arranged in the rotating block, a ventilator for extracting dust is fixedly arranged in the connecting cavity, a stretching mechanism is arranged in the installation cavity and comprises a concave rotating cavity arranged in the rotating block, pushing blocks are vertically and symmetrically arranged in the rotating cavity in a sliding manner, an upper stretching spring which is symmetrical relative to the ventilator is fixedly connected between the left end surface of the pushing block and the left end wall of the rotating cavity from top to bottom, a horn-shaped dust extraction block is fixedly arranged on the front end surface of the pushing block on the upper side and the lower side, an annular pushing cavity is arranged in the dust extraction block, eight discharge plates are slidably arranged in the pushing cavity and take the rotating block as a central, discharge plate outside end face fixed mounting has the rack, the fixedly connected with of each other can tensile rubber membrane between the discharge plate, discharge plate left end face with promote between the chamber left end wall about fixedly connected with for the discharge spring of ventilation blower symmetry, take out dirt piece down the terminal surface and be equipped with the spread groove, be equipped with pushing mechanism in the installation cavity, pushing mechanism includes fixed mounting and is in the dust storage box of installation chamber bottom end wall, be equipped with the dust storage chamber in the dust storage box, the symmetry is equipped with the dust storage groove around the dust storage chamber outside end wall, and the side is from beginning to end store up the dust inslot slidable mounting has the filter plate, under the filter plate terminal surface with store up dust groove around between the terminal surface around fixed connection for the coupling spring of filter plate symmetry, be equipped with collection mechanism in the installation cavity.

2. The retractable and steerable building dust removal device as in claim 1, wherein: steering mechanism still includes fixed mounting and is in the motor of installation cavity bottom face, the driving shaft is connected to motor upper end power, fixed mounting has drive gear on the driving shaft, be equipped with the fixed slot in the terminal surface before the installation cavity, slidable mounting has the fixed block in the fixed slot, end wall fixed mounting has the electro-magnet under the fixed slot, the fixed block up end with fixedly connected with drive spring between the fixed slot upper end wall, the spline housing is installed to the fixed block internal rotation, spline housing internal spline is connected with the integral key shaft, on the integral key shaft fixed mounting have with last bevel gear meshing's lower bevel gear.

3. The retractable and steerable building dust removal device as in claim 1, wherein: the stretching mechanism further comprises an air pump fixedly installed on the upper end face of the rotating block, the left end of the air pump is connected with a left connecting pipe connected to the rotating cavity, the right end of the air pump is connected with a right connecting pipe connected to the pushing cavity and capable of contracting, and the left end face of the rotating block is fixedly installed with a telescopic pipe connected to the dust storage cavity and capable of stretching.

4. The retractable and steerable building dust removal device as in claim 1, wherein: stretch out the mechanism and still include fixed mounting and be in the case that blocks of dust extraction piece downside cambered surface, it blocks the incasement and is equipped with and blocks the chamber, block intracavity slidable mounting have pass through the spread groove can with the rack butt just is equipped with the piece that blocks on inclined plane, block case lower extreme facial features rotate install with block under the piece terminal surface fixed connection's adjustment shaft, block under the piece terminal surface with block under the chamber fixed connection center on the adjustment spring of adjustment shaft, terminal surface fixed mounting has and is located under the adjustment shaft block the outer rotation handle of case.

5. The retractable and steerable building dust removal device as in claim 4, wherein: pushing mechanism still installs including rotating the promotion axle in the installation chamber bottom wall, promote epaxial fixed mounting have with drive gear meshed promotes the gear, promote gear up end fixed mounting have the connecting rod that is located centre of a circle right side, be equipped with the right side mouth that pushes away in the storage dirt case left end face, slidable mounting has the adsorption block in the right side mouth that pushes away, adsorption block left end face fixed mounting has the magnetic bevel piece, on the connecting rod fixed mounting have with the connecting block of the articulated installation of adsorption block right-hand member face, be equipped with the groove of opening the door in the storage dirt chamber left end wall, the inslot slidable mounting of opening the door have magnetism and inclined plane with the right sliding block that the bevel piece is repellent, right sliding block under the terminal surface with fixedly connected with spring of opening the door between the groove of opening the door under the end wall.

6. The retractable and steerable building dust removal device as in claim 1, wherein: the collecting mechanism comprises a collecting box fixedly mounted on the bottom end wall of the mounting cavity, an open-ended collecting cavity is arranged on the right side of the collecting box, a sliding groove is formed in the upper end wall of the collecting cavity, a left sliding block with an inclined plane is mounted in the sliding groove in a sliding mode, a left end face of the sliding block is fixedly connected with a sliding spring between the left end wall of the sliding groove, a rotating shaft provided with a torsion spring is mounted in the rear end wall of the collecting cavity in a rotating mode, a push rod is fixedly mounted on the rotating shaft, a telescopic block capable of stretching out and drawing back is fixedly mounted on the left end face of the push rod, and a right end face of the telescopic block is hinged to be connected with.