CN218011179U

CN218011179U - Timely extraction and separation device for preparing epimedium extract

Info

Publication number: CN218011179U
Application number: CN202221870727.1U
Authority: CN
Inventors: 朱东峰; 左崇杰; 冯福; 何学良
Original assignee: Henan Fenghui Biotechnology Co ltd
Current assignee: Henan Fenghui Biotechnology Co ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2022-12-13
Anticipated expiration: 2032-07-20

Abstract

The utility model discloses a timely extraction and separation device of preparation barrenwort extract product belongs to the barrenwort and prepares technical field, comprising a base plate, fixed surface has two horn on the bottom plate, slidable mounting has the regulating plate on the horn, one of them horn one end fixedly connected with motor one, the array is provided with a plurality of blades on the connecting axle, it is rotatory in order to drive the blade to drive the connecting axle during motor rotation, can stir garrulous raw and other materials high-efficiently, make extraction efficiency increase substantially, fixed scraper blade can scrape the raw and other materials of pasting on stirring garrulous bucket inner wall on the connecting axle, and then avoid the raw and other materials of adhesion on the inner wall to realize stirring the garrulous completely, a plurality of filtration pores one have been seted up to stirring garrulous bucket outer wall lower surface, can carry out prefiltering to the extract, a plurality of apertures that run through on the preliminary filtration extract through the centrifugation bucket outer wall and set up are less than filtration pores two and carry out secondary filtration, improve the finished product purity more high-efficiently, avoid impurity to sneak into.

Description

Timely extraction and separation device for preparing epimedium extract

Technical Field

The utility model belongs to the technical field of the epimedium is prepared, concretely relates to in time extraction and separation device of preparation epimedium extract product.

Background

Herba Epimedii is a perennial herb, has a plant height of 20-60 cm, a thick and short root stem, dark brown color, two-time and three-time double-leaf regeneration, basal and stem regeneration, long stem, small leaf paper or thick paper, sharp teeth at leaf margin, white or light yellow flower, a flowering period of 5-6 months, and a fruiting period of 6-8 months, and is used for treating impotence, premature ejaculation, soreness of waist and legs, numbness of limbs, hemiplegia, neurasthenia, amnesia, tinnitus, blurred vision, etc.

The in-time extraction and separation device of the existing epimedium extract has the phenomenon of incomplete stirring, the incomplete stirring can lead to raw material waste, and the existing device is mostly single-time filtration, so that the filtered finished product still contains impurities easily, and the purity of the finished product is not high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a timely extraction and separation device of preparation barrenwort extract product to there is the incomplete phenomenon of the bits of broken glass in the timely extraction and separation device of the current barrenwort extract product that proposes in solving above-mentioned background art, and the bits of broken glass thoroughly can lead to raw and other materials extravagant, and current device is mostly single separation, causes the finished product after the separation still to contain impurity easily, leads to the problem that finished product purity is not high.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a timely extraction and separation device of preparation barrenwort extract product, includes the bottom plate, the fixed surface of bottom plate has two horn, slidable mounting has the regulating plate on the horn, one of them horn one end fixedly connected with motor one, rotate on the motor output shaft and install the stirring barrel cover board, be fixed with the lug on the stirring barrel cover board, annular groove has been seted up to stirring barrel cover board lower surface, motor one output shaft end is fixed with the connecting axle, be fixed with the scraper blade on the connecting axle, the array is fixed with a plurality of blades on the connecting axle, two be fixed with same stirring bucket in the middle of the regulating plate, be fixed with the dog on the stirring bucket outer wall, a plurality of filtration pore I have been seted up to stirring barrel outer wall lower surface, the stirring bucket lower surface just installs pipe one to the position department of filtration pore I, be provided with the ball valve on the pipe one, one of them the horn is fixed with the collecting box, collecting box fixedly connected with pipe two on the pipe two, the pipe two fixedly connected with the support, the support is fixed on the bottom plate, be provided with the collection box, be provided with the inside the mesh opening part of the motor, the centrifugal bottle has the mesh opening part of the fixed with the motor, the bottom plate has the centrifugal collection box, the mesh hole is located the centrifugal bottle.

By adopting the scheme, the first motor can drive the connecting shaft to rotate by rotating, thereby driving the blades and the scraping plates to rotate, the blades arranged in the array can efficiently crush raw materials by rotating, so that liquid can be separated out, the scraping plates can scrape the raw materials adhered to the inner wall of the crushing barrel, and further the raw materials adhered to the inner wall are not completely crushed, the lower surface of the cover plate of the crushing barrel is provided with the annular groove which can be matched with the crushing barrel to avoid waste caused by liquid splashing in the crushing operation process, the baffle block on the outer wall of the crushing barrel is matched with the lug on the cover plate of the crushing barrel to avoid synchronous rotation of the cover plate of the crushing barrel when the first motor rotates, the ball valve can avoid that the liquid in the crushing barrel flows out through the first filtering hole when the crushing operation is not completed, the regulating plate can drive the crushing barrel to move downwards after the crushing operation is completed, the first guiding pipe is inserted into the circular through hole above the centrifugal barrel, the ball valve can be opened to enable the liquid in the crushing barrel to enter the centrifugal barrel through the first filtering hole of the second filtering barrel to perform secondary filtering operation, and the secondary filtering of the centrifugal collecting barrel after the centrifugal bottle, and the centrifugal bottle is finished product, and the centrifugal bottle can be collected through the centrifugal bottle.

As a preferred embodiment, the horn is provided with two bolt holes one above the other, and the adjusting plate is provided with a bolt which is used in cooperation with the bolt holes in a penetrating manner.

Adopt above-mentioned scheme, regulating plate and horn are sliding connection, and two bolt hole positions cooperate respectively to stir the required height of the required centrifugal operation of garrulous bucket when the bucket is in the below of smashing, and the bolt uses with the cooperation of bolt hole can fix and stir garrulous bucket.

As a preferred embodiment, three pressure feet are fixed on the mincing barrel, pressure casters are rotatably mounted at the bottoms of the three pressure feet, three top feet are fixed on the lower surface of the inner wall of the collecting box, top casters are rotatably mounted at the tops of the three top feet, and the top casters are in contact with the centrifugal barrel.

Adopt above-mentioned scheme, the overhead foot of collecting box inner wall lower surface fixed and the overhead foot on rotate the top truckle of connection and can play the auxiliary stay effect to the centrifugation bucket, stir and smash the presser foot of fixing on the bucket and rotate the pressure truckle of connection on the presser foot and can push down the centrifugation bucket when centrifugal operation, avoid the centrifugation bucket to move from top to bottom when rotatory, increase the stability when centrifugation bucket rotates.

As a preferred embodiment, the first guide pipe is provided with three hinges and hinged with a scraping strip through the hinges, the scraping strip is provided with a spring, and two ends of the spring are respectively fixedly connected with the first guide pipe and the scraping strip.

Adopt above-mentioned scheme, scrape the strip and can make with the pipe is articulated to scrape the strip and rotate around the hinge, the spring of scraping the strip and being connected with pipe one can be pulled and scrape the strip and keep the up-ward state, when centrifugal operation, push down and scrape the strip and go into the inside back of centrifugation bucket to scraping the strip through the circular through-hole on the centrifugation bucket and loosen and scrape the strip, the convex surface and the laminating of centrifugation bucket inner wall of scraping the strip this moment, when motor two drive the centrifugation bucket and rotate, it slides along the centrifugation bucket inner wall to scrape the strip, can guarantee that the centrifugation operation process does not have impurity and plug up filtration pore two, make going on that centrifugation operation is more stable.

As a preferred embodiment, two sealing bearings are rotatably arranged on an output shaft of the motor II, and the two sealing bearings are respectively clamped on the lower surface of the inner wall of the collection box and the lower surface of the outer wall of the collection box.

By adopting the scheme, the liquid after secondary filtration is collected in the collection box, and the sealing bearing can prevent the liquid from flowing out from the part rotationally connected with the two output shafts of the motor through the lower surface of the inner wall of the collection box, so that finished products are wasted.

As a preferred embodiment, a T-shaped groove is formed in the bottom plate, a sliding block is slidably mounted in the T-shaped groove, a semicircular movable block is fixed on the sliding block, a screw rod is threadedly mounted on the bottom plate, one end of the screw rod is rotatably connected with the side surface of the sliding block, a handle is fixed at the other end of the screw rod, and a semicircular fixed block is fixed on the bottom plate.

By adopting the scheme, the screw rod can be rotated to push the sliding block to slide along the T-shaped groove, so that the semicircular sliding block is driven to move, the semicircular sliding block and the semicircular fixing block clamp a finished product bottle, and the finished product bottle is prevented from being toppled in the operation process.

Compared with the prior art, the beneficial effects of the utility model are that:

the blades are arranged on the connecting shaft in an array mode, the motor I drives the connecting shaft to rotate to drive the blades to rotate when working, raw materials can be efficiently crushed, the extraction efficiency is greatly improved, the raw materials adhered to the inner wall of the crushing barrel can be scraped by the scraper fixed on the connecting shaft, and therefore the raw materials adhered to the inner wall are prevented from being not completely crushed;

a plurality of filtration pores I have been seted up to stirring garrulous bucket outer wall lower surface, can carry out prefilter to the extract, extract after the prefilter enters into the centrifugation bucket after through pipe one, two internal spline cooperation transmissions that rotate two output epaxial external splines of accessible motor and centrifugation bottom of the barrel portion make the centrifugation bucket rotate, and then run through a plurality of apertures of seting up on the centrifugation bucket outer wall and be less than filtration pore two of filtration pores one, carry out secondary filter to the liquid after the first filtration, improve finished product purity more high-efficiently, avoid impurity to sneak into.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged schematic structural view of fig. 1A of the present invention;

fig. 3 is a schematic view of a motor structure of the present invention;

FIG. 4 is a schematic view of the structure of the mincing barrel of the present invention;

fig. 5 is an enlarged schematic structural view of fig. 4B of the present invention;

fig. 6 is a schematic view of the structure of the presser foot of the present invention;

FIG. 7 is a schematic view of the sectional structure of the collecting box of the present invention;

FIG. 8 is a schematic view of the structure of the centrifuge bucket of the present invention;

fig. 9 is a schematic view of the structure of the finished bottle of the present invention.

In the figure: 1. a base plate; 2. a boom; 3. an adjusting plate; 4. a bolt hole; 5. a bolt; 6. a first motor; 7. a cover plate of the stirring barrel; 8. a connecting shaft; 9. a squeegee; 10. a blade; 11. a crushing barrel; 12. a presser foot; 13. a first conduit; 14. a ball valve; 15. a spring; 16. a stopper; 17. scraping the strips; 18. pressing the caster wheel; 19. a centrifugal barrel; 20. supporting legs; 21. a top caster; 22. a collection box; 23. a second motor; 24. sealing the bearing; 25. a second conduit; 26. a support; 27. finished product bottles; 28. a slider; 29. a screw; 30. a semicircular fixed block; 31. a semicircular movable block.

Detailed Description

Please refer to fig. 1-9, the utility model provides a timely extraction and separation device of preparation barren wort extract product, comprising a

base plate

1, 1 upper surface of bottom plate is fixed with two horn 2, slidable mounting has regulating plate 3 on the horn 2, be fixed with same garrulous bucket 11 of stirring in the middle of two regulating plate 3, two bolt holes 4 have been seted up one on the horn 2, it is provided with bolt 5 with 4 cooperation use of bolt hole to run through on the regulating plate 3, regulating plate 3 is sliding connection with horn 2, two bolt hole 4 positions cooperate respectively to stir the required height of garrulous operation of garrulous bucket 11 when the top and stir the required height of centrifugal operation of garrulous bucket 11 when the below, bolt 5 uses with 4 cooperation of bolt holes and can fix and stir garrulous bucket 11.

One end of one arm 2 is fixedly connected with a motor I6, a stirring barrel cover plate 7 is installed on an output shaft of the motor I6 in a rotating mode, a convex block is fixed on the stirring barrel cover plate 7, a circular groove is formed in the lower surface of the stirring barrel cover plate, a connecting shaft 8 is fixed at the end portion of an output shaft of the motor I6, a scraping plate 9 is fixed on the connecting shaft 8, a plurality of blades 10 are fixed on the connecting shaft 8 in an array mode, a stop block 16 is fixed on the outer wall of the stirring barrel 11, the motor I6 can drive the connecting shaft 8 to rotate, so that the blades 10 and the scraping plate 9 are driven to rotate, the blades 10 arranged in the array can efficiently stir raw materials to enable the liquid to be separated, the scraping plate 9 can scrape the raw materials pasted on the inner wall of the stirring barrel 11, further, the raw materials which are adhered to the inner wall cannot be completely stirred, the circular groove is formed in the lower surface of the stirring barrel cover plate 7, the stirring barrel cover plate can be matched with the stirring barrel 11 to avoid waste caused by liquid splashing in the stirring operation process, and the stop block 16 on the outer wall of the stirring barrel cover plate 7 can be matched with the convex block to avoid synchronous rotation of the stirring barrel cover plate 6 when the motor I6 rotates.

The lower surface of the outer wall of the stirring barrel 11 is provided with a plurality of first filtering holes, a first guide pipe 13 is arranged at a position, right opposite to the first filtering holes, of the lower surface of the stirring barrel 11, a ball valve 14 is arranged on the first guide pipe 13, a collecting box 22 is fixed on one of the machine arms 2, a centrifugal barrel 19 is arranged in the collecting box 22, a circular through hole is formed in the upper surface of the centrifugal barrel 19, three pressure feet 12 are fixed on the stirring barrel 11, pressure casters 18 are rotatably arranged at the bottoms of the three pressure feet 12, three top feet 20 are fixed on the lower surface of the inner wall of the collecting box 22, top casters 21 are rotatably arranged at the tops of the three top feet 20, the top casters 21 are in contact with the centrifugal barrel 19, the ball valve 14 can prevent liquid inside the stirring barrel 11 from flowing out through the first filtering holes when stirring operation is not completed, an adjusting plate 3 can drive the stirring barrel 11 to move downwards after the stirring operation is completed, the first guide pipe 13 is inserted into the through hole above the centrifugal barrel 19, at the moment, the ball valve 14 can enable the liquid inside the stirring barrel 11 to enter the centrifugal barrel 19 through primary filtering of the first filtering holes, the top feet 20 fixed on the inner wall of the collecting box 22 and the top feet 20, the pressure feet 21 can prevent the centrifugal barrel 12 from rotating and increase the stability of the centrifugal barrel when the centrifugal barrel 19 during the centrifugal operation, and the centrifugal barrel 19 when the centrifugal barrel 18 is rotated, and the centrifugal operation, and the pressure feet 19.

A plurality of mesh aperture ratio filtration pore aperture is seted up to centrifugal bucket 19 surface and is filtered the second filtration pore that mesh aperture is little than, the internal spline has been seted up to centrifugal bucket 19 bottom, be fixed with motor two 23 on the bottom plate 1, the output shaft end fixing of motor two 23 has the external spline, the output shaft of motor two 23 extends to the inside and external spline of collecting box 22 and the internal spline cooperation of centrifugal bucket 19 bottom use, the internal spline of centrifugal bucket 19 below and the external spline cooperation of motor two 23 output shaft end can make motor two 23 rotate the time drive centrifugal bucket 19 and rotate together, and the operation is accomplished the rear and is just taken out centrifugal bucket 19 in order to handle the inside impurity of centrifugal bucket 19, a plurality of apertures that set up on the centrifugal bucket 19 are less than filtration pore aperture one can carry out secondary filter to the liquid after the first filtration, realize the control purity to final finished product.

The first guide pipe 13 is provided with three hinges and hinged with a scraping strip 17 through the hinges, the scraping strip 17 is provided with a spring 15, two ends of the spring 15 are fixedly connected with the first guide pipe 13 and the scraping strip 17 respectively, the scraping strip 17 is hinged with the guide pipe to enable the scraping strip 17 to rotate around the hinges, the spring 15 connected with the first guide pipe 13 of the scraping strip 17 can pull the scraping strip 17 to keep an upward state, during centrifugal operation, the scraping strip 17 is pressed downwards until the scraping strip 17 enters the centrifugal barrel 19 through a circular through hole in the centrifugal barrel 19 and then is loosened, at the moment, the circular-arc-shaped outer surface of the scraping strip 17 is attached to the inner wall of the centrifugal barrel 19, when the motor II 23 drives the centrifugal barrel 19 to rotate, the scraping strip 17 slides along the inner wall of the centrifugal barrel 19, it can be ensured that impurities cannot block the filter hole II during centrifugal operation, and the centrifugal operation can be performed more stably.

Two sealing bearings 24 are rotatably mounted on an output shaft of the second motor 23, the two sealing bearings 24 are respectively clamped on the lower surface of the inner wall and the lower surface of the outer wall of the collection box 22, a finished product bottle 27 is placed on the bottom plate 1, one end, away from the collection box 22, of the second guide pipe 25 is located right above an opening of the upper surface of the finished product bottle 27, a T-shaped groove is formed in the bottom plate 1, a sliding block 28 is slidably mounted in the T-shaped groove, a semicircular movable block 31 is fixed on the sliding block 28, a screw 29 is mounted on the bottom plate 1 in a threaded manner, one end of the screw 29 is rotatably connected with the side surface of the sliding block 28, a handle is fixed at the other end of the screw 29, a semicircular fixed block 30 is fixed on the bottom plate 1, liquid after secondary filtration is collected in the collection box 22, the sealing bearings 24 can prevent the liquid from flowing out through a part where the lower surface of the inner wall of the collection box 22 is rotatably connected with the output shaft of the second motor 23, waste of the finished product is caused, the sliding block 28 can be pushed to slide along the T-shaped groove by rotating the screw 29, the semicircular fixed block 28, the semicircular fixed block 30, the finished product bottle 27 is prevented from dumping in the operation process, the finished product bottle 27 after the liquid after the secondary filtration, the liquid leaves the centrifugal barrel 19 through the second filter hole, the centrifugal barrel 19, the guide pipe 25, the guide bracket 25 can play a role of supporting and collecting box 25 to support for supporting the collection box 25 to support for collecting box.

When the device is used, the bolts 5 on the adjusting plates 3 on the two sides are firstly pulled out, the adjusting plates 3 slide downwards along the machine arm 2, the stirring barrel 11 is further driven to move downwards, the stirring barrel 11 is separated from the stirring barrel cover plate 7, the raw materials are placed into the stirring barrel 11 after the ball valve 14 is closed, then the adjusting plates 3 are upwards slid until the stirring barrel 11 is inserted into the circular groove on the stirring barrel cover plate 7, the bolts 5 on the two sides are inserted into the bolt holes 4 positioned above, the motor I6 is opened, the motor I6 works to drive the connecting shaft 8 to rotate, further the blades 10 on the connecting shaft 8 and the scraping plates 9 are driven to rotate together, the blades 10 stir the raw materials, the scraping plates 9 can slide along the inner wall of the stirring barrel 11 to scrape the raw materials adhered to the inner wall of the stirring barrel 11, the stirring operation is started, the motor I6 is closed after the stirring operation is completed, the bolts 5 on the adjusting plates 3 on the two sides are pulled out, then the scraping strips 17 are pressed downwards, and the spring 15 is in a stretching state, then the adjusting plate 3 is slid and moves downwards until the scraping strip 17 passes through a circular through hole on a centrifugal barrel 19 and then the scraping strip 17 is loosened, the spring 15 drives the scraping strip 17 to reset and move until the scraping strip 17 is attached to the inner wall of the centrifugal barrel 19, at the moment, the lower end of a first guide pipe 13 is inserted into the centrifugal barrel 19, a pressure foot wheel 18 on a pressure foot 12 is contacted with the outer wall of the centrifugal barrel 19, bolts 5 on two sides are inserted into bolt holes 4 on the lower portion, a ball valve 14 is opened, the liquid after primary filtration flows into the centrifugal barrel 19 through the first guide pipe 13, a finished product bottle 27 is attached to a semicircular fixed block 30 to be placed, a screw 29 is rotated, the screw 29 pushes a sliding block 28 to move, a semicircular movable block 31 is further driven to move together until the semicircular movable block 31 is matched with the semicircular fixed block 30 to clamp the finished product bottle 27, a second motor 23 is opened, an external spline on an output shaft of the second motor 23 is matched with an internal spline arranged below the centrifugal barrel 19, the centrifugal barrel 19 is driven to rotate, the liquid after primary filtration rotates in the centrifugal barrel 19 and leaves the centrifugal barrel 19 through the second filtration hole under the centrifugal action, so that secondary filtration is performed, the finished product leaving the centrifugal barrel 19 is collected in the collection box 22 and flows into the finished product bottle 27 through the second conduit 25 fixedly connected with the collection box 22, the second motor 23 is turned off after the centrifugal operation is finished, and the extraction and separation operation is finished.

Claims

1. The utility model provides a timely extraction and separation device of preparation barrenwort extract product which characterized in that: the device comprises a base plate (1), two machine arms (2) are fixed on the upper surface of the base plate (1), adjusting plates (3) are slidably mounted on the machine arms (2), one end of one of the machine arms (2) is fixedly connected with a first motor (6), a first motor (6) output shaft is rotatably mounted with a first stirring barrel cover plate (7), a convex block is fixed on the first stirring barrel cover plate (7), a circular groove is formed in the lower surface of the first stirring barrel cover plate (7), a connecting shaft (8) is fixed at the end part of an output shaft of the first motor (6), a scraping plate (9) is fixed on the connecting shaft (8), a plurality of blades (10) are fixed on the connecting shaft (8) in an array manner, the same stirring barrel (11) is fixed in the middle of the two adjusting plates (3), a stop block (16) is fixed on the outer wall of the first stirring barrel (11), a plurality of first filter holes are formed in the lower surface of the first stirring barrel (11), a first guide pipe (13) is arranged at the position of the lower surface of the first filter holes, a ball valve (14) is arranged on the first guide pipe (13), a collecting box (22) is fixed on the machine arm support (2), a second guide pipe (25) is fixed on the base plate (26), and a collecting box (26) is fixed on the base plate (1), the improved centrifugal separation device is characterized in that a centrifugal barrel (19) is arranged in the collection box (22), a circular through hole is formed in the upper surface of the centrifugal barrel (19), a plurality of filter holes II with mesh apertures smaller than those of the filter holes I are formed in the outer surface of the centrifugal barrel (19), an internal spline is formed in the bottom of the centrifugal barrel (19), a motor II (23) is fixed on the bottom plate (1), an external spline is fixed on the end portion of an output shaft of the motor II (23), the output shaft of the motor II (23) extends to the inside of the collection box (22), the external spline is matched with the internal spline at the bottom of the centrifugal barrel (19) for use, a finished product bottle (27) is placed on the bottom plate (1), and one end, far away from the collection box (22), of the conduit II (25) is located right above an opening of the upper surface of the finished product bottle (27).

2. The timely extraction and separation device for preparing epimedium extract according to claim 1, wherein: the machine arm (2) is provided with an upper bolt hole and a lower bolt hole (4), and the adjusting plate (3) is provided with a bolt (5) which is matched with the bolt holes (4) in use in a penetrating mode.

3. The timely extraction and separation device for preparing epimedium extract according to claim 1, wherein: the crushing barrel (11) is fixedly provided with three pressure feet (12), the bottoms of the three pressure feet (12) are respectively and rotatably provided with a pressure caster (18), the lower surface of the inner wall of the collecting box (22) is fixedly provided with three top feet (20), the tops of the three top feet (20) are respectively and rotatably provided with a top caster (21), and the top casters (21) are in contact with the outer surface of the centrifugal barrel (19).

4. The timely extraction and separation device for preparing epimedium extract according to claim 1, wherein: the scraper is characterized in that a first guide pipe (13) is provided with three hinges and hinged with a scraper bar (17) through the hinges, a spring (15) is arranged on the scraper bar (17), and two ends of the spring (15) are fixedly connected with the first guide pipe (13) and the scraper bar (17) respectively.

5. The timely extraction and separation device for preparing epimedium extract according to claim 1, wherein: two sealing bearings (24) are rotatably mounted on an output shaft of the second motor (23), and the two sealing bearings (24) are respectively clamped on the lower surface of the inner wall and the lower surface of the outer wall of the collection box (22).

6. The timely extraction and separation device for preparing epimedium extract according to claim 1, wherein: the improved multifunctional electric wrench is characterized in that a T-shaped groove is formed in the bottom plate (1), a sliding block (28) is arranged in the T-shaped groove in a sliding mode, a semicircular movable block (31) is fixed on the sliding block (28), a screw rod (29) is installed on the bottom plate (1) in a threaded mode, one end of the screw rod (29) is connected with the side face of the sliding block (28) in a rotating mode, a handle is fixed at the other end of the screw rod (29), and a semicircular fixed block (30) is fixed on the bottom plate (1).