CN112774876A

CN112774876A - Horizontal spiral discharge filtering centrifuge convenient for discharging

Info

Publication number: CN112774876A
Application number: CN202010632696.5A
Authority: CN
Inventors: 林宏洪; 徐建; 林子涛; 姚佳喜
Original assignee: Jiangsu Tusheng Centrifuge Manufacturing Co ltd
Current assignee: Jiangsu Tusheng Centrifuge Manufacturing Co ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-05-11

Abstract

The invention discloses a horizontal spiral discharging filtering centrifuge convenient for discharging, which comprises a base, wherein a cushion block and a supporting block positioned on the right side of the cushion block are fixedly arranged at the top of the base, a protective box is fixedly arranged at the top of the cushion block, a centrifugal chamber is fixedly arranged at the top of the supporting block, and the left side surface of the centrifugal chamber is fixedly connected with the right side surface of the protective box. After solid materials fall into the solid discharging pipe and the discharging pipe from the centrifugal chamber, the pushing block is pushed by the hydraulic cylinder to push the solid materials in the discharging pipe out, so that the horizontal spiral discharging filtering centrifuge can conveniently discharge materials, the rotating pipe and the rotating shaft can be driven to rotate by the mutual matching of the two motors, the two driving wheels and the two driven wheels, and the rotating drum and the inner drum can be driven to rotate in different directions by the rotating pipe and the rotating shaft, so that the inner drum can drive the outer spiral to accelerate the discharging of the solids attached to the inner wall of the rotating drum, and the practicability of the spiral discharging filtering centrifuge is further improved.

Description

Horizontal spiral discharge filtering centrifuge convenient for discharging

Technical Field

The invention relates to a horizontal spiral discharging filtering centrifuge, in particular to a horizontal spiral discharging filtering centrifuge convenient for discharging.

Background

The centrifugal machine is a machine for separating liquid from solid particles or liquid and liquid mixture by using centrifugal force, and is mainly used for separating solid particles from liquid in suspension, or separating two liquids which have different densities and are not mutually soluble in emulsion, and utilizes the characteristics of different settling speeds of solid particles with different densities or granularities in liquid, some settling centrifugal machines can also be used for grading solid particles according to densities or granularities, and the centrifugal machine is extensively used in chemical industry, petroleum, food, pharmacy, mineral separation, coal, water treatment and ship departments.

Horizontal spiral discharge filter centrifuge is one kind of centrifuge, and current horizontal spiral discharge filter centrifuge has the inconvenient condition of solid material unloading when unloading to current horizontal spiral discharge filter centrifuge has a certain amount of liquid to be thrown into the solid discharging pipe after passing through the rotary drum in the use, thereby leads to the material after the inside dehydration of solid discharging pipe to increase certain humidity again. Therefore, the horizontal spiral discharging filtering centrifuge convenient for discharging is provided.

Disclosure of Invention

In order to solve the technical problems, the invention provides the following technical scheme:

the invention relates to a horizontal spiral discharging filtering centrifuge convenient for discharging, which comprises a base, wherein a cushion block and a supporting block positioned on the right side of the cushion block are fixedly arranged at the top of the base;

a centrifugal assembly is arranged between the centrifugal chamber and the protective box, and consists of a partition plate, a first sealing bearing, a rotary drum, a rotary shaft, a rotary pipe, an inner cylinder, two material ports, a protective cover, a plurality of external spirals and a feeding pipe;

the inside of the protective box is fixedly provided with a driving assembly, the driving assembly consists of a supporting plate, two motors, two driving wheels, two driven wheels and two recovery boxes, and the supporting plate is fixedly arranged inside the protective box;

the top of the protective box is provided with an oil applying assembly, and the oil applying assembly consists of an oil tank, an oil filling port, two connecting pipes, a plurality of bristles, a plurality of through holes and two cotton cores;

the centrifugal chamber is characterized in that a discharging assembly is arranged at the bottom of the centrifugal chamber, and the discharging assembly is composed of a liquid discharging pipe, a solid discharging pipe, a hydraulic cylinder and a push block.

As a preferable technical scheme of the invention, the outer side of the partition plate is fixedly connected with the inner wall of the centrifugal chamber, and the outer surface of the rotary drum is connected with the inner wall of the partition plate through a first sealing bearing.

As a preferable technical scheme of the invention, the left end of the rotating shaft is connected with the left side surface of the supporting plate through a bearing, the right end of the rotating shaft penetrates through the centrifugal chamber, extends into the centrifugal chamber and is fixedly connected with the left side surface of the rotary drum, and the bearing is arranged at the joint of the rotating shaft and the inner wall of the base.

As a preferable technical scheme of the invention, the left end of the rotating pipe is connected with the inner wall of the left side of the protective box through a bearing, the right end of the rotating pipe sequentially penetrates through the rotating shaft and the rotating drum, extends into the rotating drum and is fixedly connected with the inner cylinder, and a second sealing bearing is arranged between the outer surface of the rotating pipe and the inner wall of the rotating drum.

As a preferable technical scheme of the invention, the two material openings are formed in the left side surface of the inner cylinder and are respectively positioned at two sides of the rotating shaft, and the plurality of outer spirals are arranged on the outer surface of the inner cylinder.

As a preferable technical scheme of the invention, the protective cover is fixedly installed inside the material port, the right side surface of the protective cover is sleeved with the outer surface of the feed pipe through a bearing, and one end of the feed pipe, which is far away from the protective cover, penetrates through the centrifugal chamber and extends to the outside of the top end of the base.

As a preferred technical scheme of the present invention, the two motors are respectively and fixedly mounted on the inner wall of the left side of the protection box and the left side surface of the support plate, the two driving wheels are respectively and fixedly sleeved on the output shafts of the two motors, the two driven wheels are respectively and fixedly sleeved on the outer surfaces of the rotating pipe and the rotating shaft, and the two driving wheels are respectively engaged with the two driven wheels.

As a preferred technical scheme of the invention, the oil tank is fixedly arranged at the top of the protective tank, the oil filling port is formed in the top of the oil tank, the two connecting pipes are fixedly communicated between the protective tank and the oil tank, the plurality of bristles are respectively and fixedly arranged at the bottoms of the two connecting pipes and are respectively positioned in the protective tank, the bottoms of the bristles are contacted with the top of the driven wheel, the plurality of through holes are respectively formed in the bottoms of the two connecting pipes, and the two cotton cores are respectively arranged in the two connecting pipes.

As a preferable technical scheme of the invention, the liquid discharging pipe and the solid discharging pipe are both fixedly communicated at the bottom of the centrifugal chamber, the liquid discharging pipe is positioned below the rotary drum, the solid discharging pipe is positioned on the right side of the rotary drum, and the bottom end of the solid discharging pipe is fixedly communicated with the discharging pipe.

As a preferable technical scheme of the invention, the hydraulic cylinder is fixedly arranged on the back of the discharge pipe, a piston rod of the hydraulic cylinder extends into the discharge pipe and is fixedly connected with the push block, and the outer surface of the push block is in sliding connection with the inner wall of the discharge pipe.

The invention has the beneficial effects that: the horizontal spiral discharging filtering centrifuge convenient for discharging is characterized in that after solid materials fall into a solid discharging pipe and a discharging pipe from a centrifugal chamber, a pushing block is pushed by a hydraulic cylinder to push the solid materials in the discharging pipe out, so that the horizontal spiral discharging filtering centrifuge is convenient to discharge, a rotating pipe and a rotating shaft can be driven to rotate by the mutual matching of two motors, two driving wheels and two driven wheels, a rotary drum and an inner drum can be driven to rotate in different directions by the rotating pipe and the rotating shaft, so that the inner drum can drive outer spiral to accelerate the discharging of solids attached to the inner wall of the rotary drum, the practicability of the spiral discharging centrifuge is further improved, the interior of the centrifugal chamber can be isolated by a partition plate, the situation that liquid thrown out by the rotary drum enters the upper part of the pushing block can be reduced, and the situation that the humidity of the dehydrated materials is increased again can, after lubricating oil is added into the oil tank through the oil filling port, the lubricating oil can permeate into the connecting pipe through the cotton core, the lubricating oil entering into the connecting pipe can permeate into the bristles through the through holes, the lubricating oil can be smeared on the driven wheel through the bristles, the automatic smearing of the lubricating oil can be realized, the practicability of the horizontal spiral discharge filter centrifuge is improved, the recovery box can recover redundant lubricating oil, and the resource waste can be reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a horizontal spiral discharge filter centrifuge for facilitating discharge according to the present invention;

FIG. 2 is a schematic cross-sectional view of a horizontal spiral discharge filter centrifuge for facilitating discharge according to the present invention;

FIG. 3 is a schematic structural view of a drum and an inner drum of a horizontal spiral discharge filter centrifuge for facilitating discharge according to the present invention;

FIG. 4 is a right-side sectional schematic view of a discharge tube of the horizontal spiral discharge filter centrifuge for facilitating discharge according to the present invention;

FIG. 5 is a right sectional view of the discharge tube of the horizontal spiral discharge filter centrifuge for facilitating discharge according to the present invention;

FIG. 6 is an enlarged schematic view of the portion A in FIG. 2 of the horizontal spiral discharge filter centrifuge for facilitating discharge according to the present invention.

In the figure: 1. a base; 2. cushion blocks; 3. a support block; 4. a centrifugal chamber; 5. a protective box; 6. a partition plate; 7. a first sealed bearing; 8. a drum; 9. a rotating shaft; 10. pipe rotation; 11. an inner barrel; 12. a material port; 13. a protective cover; 14. external spiral; 15. a feed pipe; 16. a partition plate; 17. a motor; 18. a driving wheel; 19. a driven wheel; 20. a recycling bin; 21. an oil tank; 22. an oil filler; 23. a connecting pipe; 24. brushing; 25. a through hole; 26. a cotton core; 27. a protective door; 28. a second sealed bearing; 29. a liquid discharge pipe; 30. a solid discharge pipe; 31. a discharge pipe; 32. a hydraulic cylinder; 33. and (7) pushing the block.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example (b): as shown in fig. 1-6, the horizontal spiral discharging filtering centrifuge convenient for discharging comprises a base 1, wherein a cushion block 2 and a supporting block 3 positioned on the right side of the cushion block 2 are fixedly installed at the top of the base 1, a protective box 5 is fixedly installed at the top of the cushion block 2, a centrifugal chamber 4 is fixedly installed at the top of the supporting block 3, the left side surface of the centrifugal chamber 4 is fixedly connected with the right side surface of the protective box 5, a protective door 27 is hinged to the front surface of the protective box 5 through a hinge, and a lockset and a handle are arranged on the protective door 27;

a centrifugal component is arranged between the centrifugal chamber 4 and the protective box 5, and the centrifugal component consists of a partition plate 6, a first sealing bearing 7, a rotary drum 8, a rotary shaft 9, a rotary pipe 10, an inner cylinder 11, two material ports 12, a protective cover 13, a plurality of external spirals 14 and a feeding pipe 15;

a driving assembly is fixedly arranged in the protective box 5, the driving assembly consists of a supporting plate 16, two motors 17, two driving wheels 18, two driven wheels 19 and two recovery boxes 20, and the supporting plate 16 is fixedly arranged in the protective box 5;

the top of the protective box 5 is provided with an oil applying assembly, and the oil applying assembly consists of an oil tank 21, an oil filling port 22, two connecting pipes 23, a plurality of bristles 24, a plurality of through holes 25 and two cotton cores 26;

the bottom of the centrifugal chamber 4 is provided with a discharging component, and the discharging component consists of a liquid discharging pipe 29, a solid discharging pipe 30, a discharging pipe 31, a hydraulic cylinder 32 and a pushing block 33.

Wherein, the outside of baffle 6 and centrifugal chamber 4's inner wall fixed connection, the surface of rotary drum 8 links to each other through the inner wall of first sealed bearing 7 with baffle 6, can keep apart the chamber 4 inside through baffle 6 to can reduce the condition that gets into the ejector pad 33 top through the liquid that rotary drum 8 threw away, can reduce the condition that the material after the dehydration increases humidity again.

Wherein, the left end of pivot 9 passes through the bearing and links to each other with the left surface of backup pad 16, and the right-hand member of pivot 9 runs through centrifugal chamber 4 and extends to the inside of centrifugal chamber 4 and with rotary drum 8's left surface fixed connection, and the junction of pivot 9 and base 1 inner wall is provided with the bearing, can drive rotary drum 8 through pivot 9 and rotate to can centrifuge the material, the bearing that sets up between pivot 9 and the base 1 can seal the junction of pivot 9 and base 1.

Wherein, the left end of commentaries on classics pipe 10 passes through the bearing and links to each other with the left inner wall of protective housing 5, and the right-hand member of commentaries on classics pipe 10 passes pivot 9 and rotary drum 8 in proper order and extends to rotary drum 8 inside and with inner tube 11 fixed connection, is provided with second seal bearing 28 between the surface of commentaries on classics pipe 10 and rotary drum 8's the inner wall, can seal the junction between commentaries on classics pipe 10 and rotary drum 8 through setting up second seal bearing 28, can avoid the material to reveal.

Wherein, two material mouths 12 are all opened on the left side of the inner cylinder 11 and are respectively positioned on both sides of the rotating shaft 9, a plurality of outer screws 14 are all arranged on the outer surface of the inner cylinder 11, the outer screws 14 are driven by the inner cylinder 11 to rotate, so that the residual solids in the rotary drum 8 can be pushed to the right side of the rotary drum 8, and are discharged into the solids discharging pipe 30 by the rotary drum 8.

Wherein, the protection casing 13 is fixedly installed inside the material opening 12, the right side surface of the protection casing 13 is sleeved with the outer surface of the feeding pipe 15 through a bearing, and one end of the feeding pipe 15 far away from the protection casing 13 penetrates through the centrifugal chamber 4 and extends to the outside of the top end of the base 1.

Wherein, two motors 17 are respectively and fixedly arranged on the inner wall of the left side of the protective box 5 and the left side surface of the supporting plate 16, two driving wheels 18 are respectively and fixedly sleeved on the output shafts of the two motors 17, two driven wheels 19 are respectively and fixedly sleeved on the outer surfaces of the rotating tube 10 and the rotating shaft 9, the two driving wheels 18 are respectively meshed with the two driven wheels 19, the motor 17 is a motor with a model number of Y90S-4, the motor 17 is externally connected with a control switch, and the control switch is electrically connected with an external power supply, the two motors 17, the two driving wheels 18 and the two driven wheels 19 are matched with each other to drive the rotating pipe 10 and the rotating shaft 9 to rotate, the rotary drum 8 and the inner cylinder 11 can be driven to rotate in different directions through the rotary pipe 10 and the rotary shaft 9, therefore, the inner cylinder 11 can drive the outer screw 14 to accelerate the discharge of the solid attached to the inner wall of the rotary drum 8, and the practicability of the spiral discharge filter centrifuge is further improved.

Wherein, oil tank 21 fixed mounting is at the top of protective housing 5, oil filler hole 22 is seted up at the top of oil tank 21, two connecting pipes 23 are all fixed to be communicated between protective housing 5 and oil tank 21, a plurality of brush hair 24 is fixed mounting respectively in the bottom of two connecting pipes 23 and all is located the inside of protective housing 5, brush hair 24 bottom and the top contact from driving wheel 19, a plurality of through-hole 25 is seted up respectively in the bottom of two connecting pipes 23, two cotton cores 26 set up respectively in the inside of two connecting pipes 23.

Wherein, the liquid discharging pipe 29 and the solid discharging pipe 30 are both fixedly communicated at the bottom of the centrifugal chamber 4, the liquid discharging pipe 29 is positioned below the rotary drum 8, the solid discharging pipe 30 is positioned at the right side of the rotary drum 8, and the bottom end of the solid discharging pipe 30 is fixedly communicated with the discharging pipe 31.

Wherein, pneumatic cylinder 32 fixed mounting is at the back of discharge tube 31, the piston rod of pneumatic cylinder 32 extend to the inside of discharge tube 31 and with ejector pad 33 fixed connection, the surface of ejector pad 33 and the inner wall sliding connection of discharge tube 31, the applicable model of pneumatic cylinder 32 is the HOB80 pneumatic cylinder, pneumatic cylinder 32 links to each other through hydraulic pressure station with external, solid material falls into solid discharging pipe 30 and discharge tube 31 inside back by centrifugal chamber 4, promote the ejector pad 33 through pneumatic cylinder 32 and can release the inside solid material of discharge tube 31, thereby be convenient for this horizontal spiral discharge filter centrifuge to unload.

When the horizontal spiral unloading filtering centrifuge works, the hydraulic cylinder 32 is started, the pushing block 33 is driven by the hydraulic cylinder 32 to move rightwards and the solid discharging pipe 30 is conducted, at the moment, the position of the pushing block 33 is as shown in figure 5, sufficient lubricating oil is added into the oil tank 21 through the oil filling port 22, then the two motors 17 are started, the rotating pipe 10 and the rotating shaft 9 can be driven to rotate through the mutual matching of the two motors 17, the two driving wheels 18 and the two driven wheels 19, the rotating drum 8 and the inner drum 11 can be driven to rotate in different rotating directions through the rotating pipe 10 and the rotating shaft 9, then materials needing to be centrifuged are added into the horizontal spiral unloading filtering centrifuge through the feeding pipe 15, the materials enter the left side of the protective cover 13 through the feeding pipe 15 and then enter the rotating drum 8 through the material port 12, the materials are centrifuged through the rotating drum 8, liquid enters the area on the, the solid material falls into the area on the right side of the partition plate 6 from the right side of the rotary drum 8 under the pushing of the outer spiral 14, then falls into the discharge pipe 31 from the solid material discharge pipe 30, the hydraulic cylinder 32 is started, the push block 33 is pushed by the hydraulic cylinder 32 to push the solid material in the discharge pipe 31 out, at the moment, the position of the push block 33 is shown in figure 4, when the push block 33 moves away from the hydraulic cylinder 32, the push block 33 can block the solid material discharge pipe 30, so that the material is prevented from entering the right side of the push block 33, the partition plate 6 can isolate the inside of the centrifugal chamber 4, so that the situation that the liquid thrown out by the rotary drum 8 enters the upper part of the push block 33 can be reduced, the situation that the humidity of the dehydrated material is increased again can be reduced, after the lubricating oil is added into the oil tank 21 through the oil filling opening 22, the lubricating oil can permeate into the connecting pipe 23 through the, can paint lubricating oil on follow driving wheel 19 through brush hair 24, can realize the automation of lubricating oil and paint, improve this horizontal spiral discharge filter centrifuge's practicality to collection box 20 can be retrieved unnecessary lubricating oil, can reduce the waste of resource.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The horizontal spiral discharging filter centrifuge convenient for discharging is characterized by comprising a base (1), wherein a cushion block (2) and a supporting block (3) positioned on the right side of the cushion block (2) are fixedly mounted at the top of the base (1), a protective box (5) is fixedly mounted at the top of the cushion block (2), a centrifugal chamber (4) is fixedly mounted at the top of the supporting block (3), the left side surface of the centrifugal chamber (4) is fixedly connected with the right side surface of the protective box (5), a protective door (27) is hinged to the front surface of the protective box (5) through a hinge, and a lockset and a handle are arranged on the protective door (27);

a centrifugal assembly is arranged between the centrifugal chamber (4) and the protective box (5), and the centrifugal assembly consists of a partition plate (6), a first sealing bearing (7), a rotary drum (8), a rotary shaft (9), a rotary pipe (10), an inner cylinder (11), two material openings (12), a protective cover (13), a plurality of outer screws (14) and a feeding pipe (15);

a driving assembly is fixedly arranged in the protective box (5), the driving assembly consists of a supporting plate (16), two motors (17), two driving wheels (18), two driven wheels (19) and two recovery boxes (20), and the supporting plate (16) is fixedly arranged in the protective box (5);

the top of the protective box (5) is provided with an oil smearing assembly, and the oil smearing assembly consists of an oil tank (21), an oil filling port (22), two connecting pipes (23), a plurality of bristles (24), a plurality of through holes (25) and two cotton cores (26);

the centrifugal separator is characterized in that a discharging assembly is arranged at the bottom of the centrifugal chamber (4), and the discharging assembly consists of a liquid discharging pipe (29), a solid discharging pipe (30), a discharging pipe (31), a hydraulic cylinder (32) and a push block (33).

2. The horizontal spiral discharge filter centrifuge convenient for discharging as claimed in claim 1, wherein the outer side of the partition plate (6) is fixedly connected with the inner wall of the centrifugal chamber (4), and the outer surface of the rotary drum (8) is connected with the inner wall of the partition plate (6) through a first sealing bearing (7).

3. The horizontal spiral discharging filtering centrifuge convenient for discharging is characterized in that the left end of the rotating shaft (9) is connected with the left side surface of the supporting plate (16) through a bearing, the right end of the rotating shaft (9) penetrates through the centrifugal chamber (4), extends into the centrifugal chamber (4) and is fixedly connected with the left side surface of the rotary drum (8), and the bearing is arranged at the joint of the rotating shaft (9) and the inner wall of the base (1).

4. The horizontal spiral discharging filtering centrifuge convenient for discharging is characterized in that the left end of the rotating pipe (10) is connected with the inner wall of the left side of the protective box (5) through a bearing, the right end of the rotating pipe (10) sequentially penetrates through the rotating shaft (9) and the rotary drum (8), extends into the rotary drum (8) and is fixedly connected with the inner cylinder (11), and a second sealing bearing (28) is arranged between the outer surface of the rotating pipe (10) and the inner wall of the rotary drum (8).

5. The horizontal spiral discharging filter centrifuge convenient for discharging according to claim 1, wherein two material ports (12) are formed on the left side surface of the inner cylinder (11) and located on two sides of the rotating shaft (9), and a plurality of outer spirals (14) are formed on the outer surface of the inner cylinder (11).

6. The horizontal spiral discharging filter centrifuge convenient for discharging is characterized in that the protective cover (13) is fixedly arranged inside the material opening (12), the right side surface of the protective cover (13) is sleeved with the outer surface of the feeding pipe (15) through a bearing, and one end, far away from the protective cover (13), of the feeding pipe (15) penetrates through the centrifugal chamber (4) and extends to the outside of the top end of the base (1).

7. The horizontal spiral discharging filtering centrifuge convenient for discharging is characterized in that two motors (17) are respectively and fixedly arranged on the inner wall of the left side of the protective box (5) and the left side surface of the supporting plate (16), two driving wheels (18) are respectively and fixedly sleeved on output shafts of the two motors (17), two driven wheels (19) are respectively and fixedly sleeved on the outer surfaces of the rotating pipe (10) and the rotating shaft (9), and the two driving wheels (18) are respectively meshed with the two driven wheels (19).

8. The horizontal spiral discharging filter centrifuge convenient for discharging is characterized in that the oil tank (21) is fixedly arranged at the top of the protective box (5), the oil filling port (22) is arranged at the top of the oil tank (21), the two connecting pipes (23) are fixedly communicated between the protective box (5) and the oil tank (21), the bristles (24) are respectively and fixedly arranged at the bottoms of the two connecting pipes (23) and are respectively positioned inside the protective box (5), the bottoms of the bristles (24) are contacted with the top of the driven wheel (19), the through holes (25) are respectively arranged at the bottoms of the two connecting pipes (23), and the cotton cores (26) are respectively arranged inside the two connecting pipes (23).

9. The horizontal spiral discharge filter centrifuge convenient for discharging according to claim 1, wherein the liquid discharge pipe (29) and the solid discharge pipe (30) are both fixedly communicated with the bottom of the centrifuge chamber (4), the liquid discharge pipe (29) is positioned below the rotary drum (8), the solid discharge pipe (30) is positioned at the right side of the rotary drum (8), and the bottom end of the solid discharge pipe (30) is fixedly communicated with the discharge pipe (31).

10. The horizontal spiral discharge filter centrifuge for facilitating discharge of materials according to claim 1, wherein the hydraulic cylinder (32) is fixedly installed at the back of the discharge tube (31), the piston rod of the hydraulic cylinder (32) extends to the inside of the discharge tube (31) and is fixedly connected with the push block (33), and the outer surface of the push block (33) is slidably connected with the inner wall of the discharge tube (31).