CN212854991U - Filter cartridge dust remover with improved ash removal quality - Google Patents

Abstract

The utility model relates to a strain a dust remover with improve deashing quality, it is including the dust removal box, a fixed plate, the gas outlet, strain a section of thick bamboo, be equipped with the division board between the inner chamber roof of fixed plate and dust removal box, the division board divide into return air chamber and air outlet chamber with the dust removal room, the return air chamber is located the top of air outlet chamber, the gas outlet communicates with each other with air outlet chamber, return air chamber and outside gas storage package intercommunication, strain the coaxial air guide post that is equipped with in the section of thick bamboo, air guide post cavity sets up, the bottom of air guide post is sealed, the top intercommunication of air guide post has the breather pipe, the one end that the air guide post was kept away from to the breather pipe is passed the division board and is extended to in the air return chamber, be equipped with a plurality of air duct on the lateral wall of. The utility model has the advantages of improve and blow off the effect with the dust from straining a section of thick bamboo.

Description

Filter cartridge dust remover with improved ash removal quality

Technical Field

The utility model belongs to the technical field of the technique of straining a dust remover and specifically relates to a strain a dust remover with improve deashing quality is related to.

Background

The filter cartridge dust remover is a dust remover which is composed of a filter cartridge as a filter element. The filter cartridge deduster consists of an air inlet pipe, an exhaust pipe, a box body, an ash bucket, an ash removal device, a flow guide device, a filter cartridge and an electric control device. The traditional filter cylinder dust remover has two dust removing modes, one is high-pressure airflow back blowing, and the other is pulse airflow blowing.

The current chinese patent that bulletin number is CN207805265U discloses a dust remover is strained to pulsed, including the dust removal box, the downside and the top of dust removal box are equipped with air inlet and gas outlet respectively, the ash bucket is installed to the bottom of dust removal box, be equipped with the fixed plate in the dust removal box, the upper and lower part that the fixed plate will remove the dust box is clean air chamber and clean room, the below of fixed plate is connected with a plurality of and strains a section of thick bamboo, be equipped with the jetting pipe in the clean air chamber, install the pulse valve on the inlet end of jetting pipe, the air supply and the outside gas storage package of jetting pipe are connected.

When the pulse type filter cylinder dust remover works, gas with dust enters the dust remover from the gas inlet and gradually rises, the gas enters the filter cylinder through the side wall of the filter cylinder, the dust cannot pass through the filter cylinder, part of the dust is attached to the filter cylinder, and the other part of the dust directly falls into the dust hopper. The filtered gas flows into the clean gas chamber through the fixed plate and is discharged out of the dust remover from the gas outlet. When the thickness of the dust collected on the filter cylinder is thick, an operator closes the air inlet and blows air into the filter cylinder reversely through the air storage bag, and the air flow can blow the dust attached to the outer side wall of the filter cylinder into the dust hopper, so that the dust removal of the filter cylinder is realized.

However, because the size of the air storage bag is limited, the air flow blown into the filter cartridge by the air storage bag is weak, and the effect of blowing the dust from the filter cartridge by the air flow is poor, so that the air storage bag has obvious defects.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a filter cartridge dust remover with improve deashing quality, has the advantage that improves the dust from straining a section of thick bamboo and blow off the effect to prior art exists not enough.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a strain a dust remover with improve deashing quality, includes dust removal box, fixed plate, gas outlet, strains a section of thick bamboo, be equipped with the division board between the inner chamber roof of fixed plate and dust removal box, the division board divide into the dust removal room return air chamber and go out the air chamber, the return air chamber is located the top of going out the air chamber, the gas outlet communicates with each other with going out the air chamber, return air chamber and outside gas receiver intercommunication, strain the coaxial air guide post that is equipped with in the section of thick bamboo, air guide post cavity sets up, the bottom of air guide post is sealed, the top intercommunication of air guide post has the breather pipe, the breather pipe is kept away from the one end of air guide post and is passed the division board and extend to in the return air chamber, be equipped with a plurality of air duct on the lateral wall of air guide post, the air duct communicates with each other with the.

Through adopting above-mentioned technical scheme, during the deashing, operating personnel blows to the return-air chamber in through outside gas storage package, and the air current gets into the air guide post through the breather pipe, then blows off to straining on the section of thick bamboo from the air duct to the realization is strained the dust blowdown of gathering on the section of thick bamboo. The air guide column and the air guide tube are arranged to guide the flow of air and have the function of gathering air, so that the air blown onto the filter cylinder is stronger, and the effect of blowing off dust from the filter cylinder by air is improved. The utility model discloses a setting of air guide post, air duct has the improvement and blows off the advantage of effect with the dust from straining a section of thick bamboo.

The present invention may be further configured in a preferred embodiment as: the one end coaxial coupling that the gas column was kept away from to the breather pipe has the lifter, it has the air vent to open on the breather pipe, the air vent is located the return-air chamber, the air vent communicates with each other with the gas column, the gas column rotates to be connected in straining a section of thick bamboo, the lifter passes the roof of dust removal box and fixed cover is equipped with driven gear, the top of dust removal box is equipped with first motor, fixed cover is equipped with the drive gear with driven gear meshing in the axis of rotation of first motor, the lifter rotates with the dust removal box to be connected.

Through adopting above-mentioned technical scheme, the operation workman starts first motor, and the axis of rotation of first motor drives drive gear and rotates, and drive gear drives driven gear and rotates, and driven gear drives the lifter and rotates, and the lifter rotates and drives the breather pipe and rotate, and the air guide post rotates and has increased the area of contact of air current with straining a section of thick bamboo inner wall to this can blow off more dust from straining a section of thick bamboo, has improved the effect that the air current blows off the dust from straining a section of thick bamboo.

The present invention may be further configured in a preferred embodiment as: a horizontal lifting plate is arranged above the dust removing box body, two supporting blocks which are parallel to each other are arranged on one side of the lifting plate, which is back to the dust removing box body, a horizontal bearing plate is arranged between the two supporting blocks, the first motor is bolted on one side of the bearing plate, which is back to the lifting plate, the lifting rod is rotatably penetrated through the lifting plate, the driven gear and the driving gear are arranged on one side of the lifting plate, which is facing to the bearing plate, a bracket is respectively arranged on two opposite sides of the lifting plate, a second motor is bolted on the bracket, a rotating disc is coaxially and fixedly sleeved on the rotating shaft of the second motor, the rotating disc is arranged between the bracket and the lifting plate, a rotating rod is rotatably connected to one side of the lifting plate, which is facing to the bracket, one end of the rotating rod, which is far away from the lifting plate, is rotatably connected to the rotating disc, and an interval, the lifting rod is in sliding fit with the dust removal box body.

Through adopting above-mentioned technical scheme, start the second motor, the axis of rotation of second motor drives the rolling disc and rotates, and the rolling disc drives the lifter plate through the dwang and is the up-and-down motion, and the lifter plate drives the air guide post through the lifter and is straining interior up-and-down motion to this makes the area of air current blowdown dust more comprehensive, is favorable to improving the effect that the air current blows the dust from straining a section of thick bamboo.

The present invention may be further configured in a preferred embodiment as: the lifting plate is provided with a rotating bearing in interference fit, the rotating bearing is sleeved on the lifting rod, and the rotating bearing is in interference fit with the lifting rod.

Through adopting above-mentioned technical scheme, setting up of rolling bearing makes more smooth and easy when relative rotation between lifter and the lifter plate.

The present invention may be further configured in a preferred embodiment as: the rotary joint of the partition plate and the vent pipe is provided with a sealing groove, a sealing ring is arranged in the sealing groove, and the inner side wall of the sealing ring is tightly attached to the outer side wall of the vent pipe and is in sliding connection with the outer side wall of the vent pipe.

Through adopting above-mentioned technical scheme, the setting up of sealing washer has strengthened return air chamber's sealing performance, is favorable to reducing the possibility that gas leaks from the gap of breather pipe and division board to intensity when having strengthened the air current and blowing to straining a section of thick bamboo, thereby improved the effect that the air current blows off the dust from straining a section of thick bamboo.

The present invention may be further configured in a preferred embodiment as: the lower surface welding of lifter plate has the spacing ring, the lifter rotates and passes the spacing ring.

Through adopting above-mentioned technical scheme, the spacing ring plays the supporting limit effect to rolling bearing, has reduced rolling bearing and has received under the pulling force's of lifter the condition, from the possibility that breaks away from on the lifter plate.

The present invention may be further configured in a preferred embodiment as: the distance between the partition plate and the top wall of the inner cavity of the dust removal box is not less than twice of the distance between the rotating joint of the rotating rod and the rotating disc and the axis of the rotating disc.

Through adopting above-mentioned technical scheme, when second motor drive lifter plate up-and-down motion, the air vent can be located the return air chamber all the time, when having reduced the deashing, and the air vent breaks away from the return air chamber, and gas loss causes to blow to the less possibility of intensity of straining gas on the section of thick bamboo.

The present invention may be further configured in a preferred embodiment as: the upper surface of the dust removal box body is provided with a guide post, the guide post is vertically arranged, and the lifting plate is sleeved on the guide post in a sliding manner.

Through adopting above-mentioned technical scheme, the guide post plays the guide effect to the up-and-down motion of lifter plate, is favorable to improving the stability of lifter plate lift in-process.

To sum up, the utility model discloses a following beneficial technological effect: the setting of air guide post, air duct plays the drainage effect to the flow of gas, has the effect of drawing in gas in simultaneously for blow to strain the gaseous more powerful on the section of thick bamboo, consequently, the utility model provides high gaseous effect of blowing off the dust from straining a section of thick bamboo.

Drawings

Fig. 1 is a schematic structural diagram for embodying the present invention;

FIG. 2 is a sectional view showing the connection among the partition plate, the lift lever, the lift plate, and the vent hole;

fig. 3 is an enlarged view of a portion a in fig. 2.

In the figure, 1, a dust removal box body; 2. a fixing plate; 3. an air outlet; 4. a filter cartridge; 5. a partition plate; 6. an air return chamber; 7. an air outlet chamber; 8. a gas-conducting column; 9. a breather pipe; 10. an air duct; 11. a lifting rod; 12. a vent hole; 13. a driven gear; 14. a first motor; 15. a drive gear; 16. a lifting plate; 17. a support block; 18. a carrier plate; 19. a support; 20. a second motor; 21. rotating the disc; 22. rotating the rod; 23. a rotating bearing; 24. a sealing groove; 25. a seal ring; 26. a limiting ring; 27. a guide post; 28. rotating the first pin; 29. a second rotating pin; 30. a limiting sheet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a filter cartridge dust remover with improve deashing quality, including dust removal box 1, fixed plate 2, gas outlet 3, four filter cylinders 4. Four strain a section of thick bamboo 4 along the circumference inside wall evenly distributed of dust removal box 1, are equipped with division board 5 between the inner chamber roof of fixed plate 2 and dust removal box 1, and division board 5 level sets up, and division board 5 and the inside wall welded fastening of dust removal box 1. The dust cleaning chamber is divided into an air return chamber 6 and an air outlet chamber 7 by the partition plate 5, the air return chamber 6 is positioned above the air outlet chamber 7, the air outlet 3 is communicated with the air outlet chamber 7, and the air return chamber 6 is communicated with an external air storage bag.

Referring to fig. 1 and 2, an air guide column 8 is arranged in the filter cartridge 4, and the air guide column 8 is coaxial with the filter cartridge 4 and is hollow inside. The bottom end of the air guide column 8 is closed, the top end of the air guide column 8 is communicated with a vent pipe 9, and the vent pipe 9 and the air guide column 8 are welded and fixed. One end of the vent pipe 9 far away from the air guide column 8 penetrates through the partition plate 5 and extends into the air return chamber 6, a plurality of air guide pipes 10 are welded on the outer side wall of the air guide column 8, the air guide pipes 10 are communicated with the inner cavity of the air guide column 8, and one end of each air guide pipe 10 far away from the air guide column 8 faces towards the inner side wall of the filter cartridge 4.

Referring to fig. 1 and 2, a plurality of air ducts 10 are uniformly distributed along the circumferential direction of the outer side wall of the air guide column 8, the plurality of air ducts 10 are uniformly distributed along the length direction of the air guide column 8, and the length direction of the air ducts 10 is perpendicular to the axis of the air guide column 8. The gas guide tubes 10 are uniformly arranged on the gas guide column 8, so that gas can be uniformly distributed and blown onto the filter cartridge 4, and the effect of blowing dust from the filter cartridge 4 by the gas is improved.

Referring to fig. 1 and 2, when removing dust collected on the filter cartridge 4, an operator ventilates the return air chamber 6 through an external air storage bag, and air flows into the air guide column 8 through the air guide pipe 9 and is ejected from the air guide pipe 10 onto the filter cartridge 4. The vent pipe 9, the air guide column 8 and the air guide pipe 10 play a role in guiding the flow of the air and gathering the air, so that the air is blown to the filter cartridge 4 more strongly, and the effect of blowing the dust from the filter cartridge 4 by the air is improved.

Referring to fig. 1 and 2, the vent pipe 9 is provided with four vent holes 12, and the vent holes 12 are uniformly distributed on the vent pipe 9 in the circumferential direction. The vent hole 12 is positioned in the air return chamber 6, the vent hole 12 is communicated with the air guide column 8, and the air guide column 8 is rotatably connected in the filter cartridge 4. The coaxial welding of the one end of breather pipe 9 far away from air guide post 8 has lifter 11, and lifter 11 wears out the roof of dust removal box 1, and lifter 11 rotates with dust removal box 1 to be connected. A driven gear 13 is sleeved on a rod body of the lifting rod 11 positioned outside the dust removal box body 1, and the driven gear 13 and the lifting rod 11 are welded and fixed.

Referring to fig. 1 and 2, a horizontal lifting plate 16 is disposed above the dust removing box 1, and the lifting rod 11 is rotatably inserted into the lifting plate 16. The lifting plate 16 is provided with a rotating bearing 23 in interference fit, the rotating bearing 23 is sleeved on the lifting rod 11, and the rotating bearing 23 is in interference fit with the lifting rod 11. The provision of the pivot bearing 23 allows for a smoother pivoting engagement between the lifter plate 16 and the lifter bar 11. The lower surface of the lifting plate 16 is welded with a limit ring 26, and the lifting rod 11 rotates to penetrate through the limit ring 26. The stop collar 26 supports and limits the pivot bearing 23, and reduces the possibility that the lifter bar 11 will pull the pivot bearing 23 out of the lifter plate 16.

Referring to fig. 1 and 2, two parallel supporting blocks 17 are welded on one side of the lifting plate 16, which faces away from the dust removing box body 1, a bearing plate 18 is welded between the two supporting blocks 17, and the bearing plate 18 is parallel to the lifting plate 16. The bearing plate 18 is bolted with the first motor 14 on the side opposite to the lifting plate 16, and the rotating shaft of the first motor 14 is sleeved with a driving gear 15 meshed with the driven gear 13. The driven gear 13 and the driving gear 15 are positioned on the side of the lifting plate 16 opposite to the bearing plate 18.

Referring to fig. 1 and 2, an operator starts the first motor 14, the rotating shaft of the first motor 14 drives the driving gear 15 to rotate, the driving gear 15 drives the driven gear 13 to rotate, the driven gear 13 drives the lifting rod 11 to rotate, the lifting rod 11 rotates to drive the vent pipe 9 to rotate, so that the air guide column 8 is driven to rotate, the area of the inner wall of the filter cartridge 4 blown by the air flow is increased by the rotation of the air guide column 8, more dust can be blown off from the filter cartridge 4, and the effect of blowing off the dust from the filter cartridge 4 by the air flow is improved.

Referring to fig. 1 and 2, two opposite sides of the lifting plate 16 are respectively provided with an "L" shaped bracket 19, one end of the bracket 19 is welded on the upper surface of the dust removing box body 1, and the other end of the bracket body is bolted with a second motor 20. A rotating disc 21 is coaxially sleeved on a rotating shaft of the second motor 20, the rotating disc 21 is fixedly welded with the rotating shaft of the second motor 20, and the rotating disc 21 is located between the support 19 and the lifting plate 16.

Referring to fig. 2 and 3, a rotating pin 28 is welded to one side of the lifting plate 16 facing the bracket 19, and a rotating rod 22 is rotatably sleeved on the rotating pin 28. A second rotating pin 29 is rotatably arranged on the rotating disc 21 in a penetrating manner, one end of the rotating rod 22, which is far away from the first rotating pin 28, is rotatably sleeved on the second rotating pin 29, and a distance is reserved between the second rotating pin 29 and the axis of the rotating disc 21. The axes of the first rotating pin 28, the second rotating pin 29 and the rotating disc 21 are parallel to each other. Two ends of the second rotating pin 29 are respectively welded with a limiting sheet 30. The arrangement of the limiting sheet 30 reduces the possibility of relative sliding among the second rotating pin 29, the rotating rod 22 and the rotating disk 21.

Referring to fig. 1 and 2, the lifting rod 11 is slidably fitted to the dust-removing box 1. When the second motor 20 is started, the rotating shaft of the second motor 20 drives the rotating disc 21 to rotate, the rotating disc 21 drives the lifting rod 11 to move up and down through the rotating rod 22, and the movement of the lifting plate 16 is up and down reciprocating movement. The lifting plate 16 drives the air guide column 8 to reciprocate up and down in the filter cartridge 4, so that the area of the air flow blowing to the filter cartridge 4 is further increased, the area of the air flow blowing dust is more comprehensive, and the effect of blowing the dust from the filter cartridge 4 by the air flow is improved.

Referring to fig. 2 and 3, the distance between the partition plate 5 and the top wall of the inner cavity of the dust removing box body 1 is not less than twice the rotation radius of the second rotation pin 29, so that when the second motor 20 drives the lifting plate 16 to move up and down, the vent hole 12 can be always positioned in the air return chamber 6, and the possibility that the strength of the gas blown onto the filter cartridge 4 is low due to the fact that the vent hole 12 is separated from the air return chamber 6 during ash removal is reduced.

Referring to fig. 2, a seal groove 24 is formed at the rotational connection position of the partition plate 5 and the vent pipe 9, a seal ring 25 is arranged in the seal groove 24, and the inner side wall of the seal ring 25 is closely attached to and slidably connected with the outer side wall of the vent pipe 9. The sealing ring 25 enhances the sealing performance of the air return chamber 6, reduces the possibility that air leaks out of the air return chamber 6 from the gap between the vent pipe 9 and the partition plate 5, is favorable for enhancing the strength of the air flow blowing to the filter cartridge 4, and improves the effect of blowing dust from the filter cartridge 4 by the air flow.

Referring to fig. 1 and 2, the upper surface of the dust removing box body 1 is provided with a guide post 27, the guide post 27 is vertically arranged, and the lifting plate 16 is slidably sleeved on the guide post 27. The guide posts 27 guide the up-and-down reciprocating movement of the lifting plate 16, which is beneficial to improving the stability of the up-and-down movement process of the lifting plate 16.

The implementation principle of the embodiment is as follows:

1. during the deashing, start first motor 14, the axis of rotation of first motor 14 drives drive gear 15 and rotates, and drive gear 15 drives driven gear 13 and rotates, and driven gear 13 drives lifter 11 and rotates, and lifter 11 drives breather pipe 9 and rotates, and breather pipe 9 drives the rotation of air guide post 8. An operator blows air into the air return chamber 6 through an external air storage bag, the air flow enters the vent pipe 9 through the vent hole 12, then enters the air guide column 8 and finally blows out from the air guide pipe 10 to the filter cartridge 4, and therefore dust collected on the filter cartridge 4 is blown off. The air guide column 8 and the air guide tube 10 are arranged to guide the flow of air and have the function of gathering air, so that the air blown onto the filter cylinder 4 is stronger, and the advantage of improving the effect of blowing dust off the filter cylinder 4 by air is achieved.

2. When first motor 14 worked, start second motor 20, second motor 20's axis of rotation drives rolling disc 21 and rotates, is connected through rolling disc 21 and the rotation of dwang 22, dwang 22 is connected with lifter plate 16's rotation for rolling disc 21 rotates and to drive lifter plate 16 and do reciprocating motion from top to bottom, with this area of work that has increased air duct 10, is favorable to improving the effect that gaseous dust is blown off from straining a section of thick bamboo 4.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides a strain a dust remover with improve deashing quality, includes dust removal box (1), fixed plate (2), gas outlet (3), strains a section of thick bamboo (4), its characterized in that: be equipped with division board (5) between the inner chamber roof of fixed plate (2) and dust removal box (1), division board (5) divide into return air chamber (6) and go out air chamber (7) with the clean room, return air chamber (6) are located the top of going out air chamber (7), gas outlet (3) communicate with each other with going out air chamber (7), return air chamber (6) and outside gas storage package intercommunication, strain and be equipped with air guide post (8) in the section of thick bamboo (4) coaxially, air guide post (8) cavity sets up, the bottom of air guide post (8) is sealed, the top intercommunication of air guide post (8) has breather pipe (9), the one end that air guide post (8) were kept away from in breather pipe (9) passes division board (5) and extends to in air return chamber (6), be equipped with a plurality of air duct (10) on the lateral wall of air guide post (8), air duct (10) communicate with each other with the inner chamber of air guide post (8), one end of the air duct (10) far away from the air guide column (8) faces the inner side wall of the filter cartridge (4).

2. The filter cartridge dust collector with improved ash removal quality as claimed in claim 1, wherein: the one end coaxial coupling who leads gas column (8) is kept away from in breather pipe (9) has lifter (11), it has air vent (12) to open on breather pipe (9), air vent (12) are located return air chamber (6), air vent (12) communicate with each other with lead gas column (8), lead gas column (8) to rotate to be connected in straining a section of thick bamboo (4), lifter (11) are passed the roof of dust removal box (1) and fixed cover and are equipped with driven gear (13), the top of dust removal box (1) is equipped with first motor (14), fixed cover is equipped with drive gear (15) with driven gear (13) meshing in the axis of rotation of first motor (14), lifter (11) rotate with dust removal box (1) and are connected.

3. The filter cartridge dust collector with improved ash removal quality as claimed in claim 2, wherein: the dust removal box is characterized in that a horizontal lifting plate (16) is arranged above the dust removal box body (1), one side of the lifting plate (16) back to the dust removal box body (1) is provided with two supporting blocks (17) which are parallel to each other, a horizontal bearing plate (18) is arranged between the two supporting blocks (17), a first motor (14) is bolted on one side of the bearing plate (18) back to the lifting plate (16), a lifting rod (11) is rotatably arranged on the lifting plate (16) in a penetrating manner, a driven gear (13) and a driving gear (15) are arranged on one side of the lifting plate (16) facing the bearing plate (18), two opposite sides of the lifting plate (16) are respectively provided with a support (19), a second motor (20) is bolted on the support (19), a rotating disc (21) is coaxially and fixedly sleeved on a rotating shaft of the second motor (20), and the rotating disc (21) is arranged between the support (19) and the lifting plate (16), lifter plate (16) rotates towards one side of support (19) and is connected with dwang (22), the one end that lifter plate (16) were kept away from in dwang (22) rotates and connects on rolling disc (21), the interval has between the rotation center of the rotation junction of dwang (22) and rolling disc (21), lifter (11) and dust removal box (1) sliding fit.

4. The filter cartridge dust collector with improved ash removal quality of claim 3, wherein: interference fit has rolling bearing (23) on lifter plate (16), rolling bearing (23) cover is established on lifter (11), rolling bearing (23) and lifter (11) interference fit.

5. The filter cartridge dust collector with improved ash removal quality as claimed in claim 1, wherein: division board (5) and the rotation junction of breather pipe (9) are opened has seal groove (24), be equipped with sealing washer (25) in seal groove (24), the inside wall of sealing washer (25) is hugged closely and sliding connection with the lateral wall of breather pipe (9).

6. The filter cartridge dust collector with improved ash removal quality of claim 3, wherein: the lower surface welding of lifter plate (16) has spacing ring (26), lifter (11) rotate and pass spacing ring (26).

7. The filter cartridge dust collector with improved ash removal quality of claim 3, wherein: the distance between the partition plate (5) and the top wall of the inner cavity of the dust removal box body (1) is not less than twice of the distance between the rotating joint of the rotating rod (22) and the rotating disc (21) and the axis of the rotating disc (21).

8. The filter cartridge dust collector with improved ash removal quality of claim 4, wherein: the upper surface of the dust removal box body (1) is provided with a guide post (27), the guide post (27) is vertically arranged, and the lifting plate (16) is sleeved on the guide post in a sliding manner.

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