CN109157737B

CN109157737B - Brain drainage tube prevents blockking up regularly extrusion device

Info

Publication number: CN109157737B
Application number: CN201811183365.7A
Authority: CN
Inventors: 原高明; 史保中; 王璐璐; 孟晓峰
Original assignee: First Affiliated Hospital of Henan University of Science and Technology
Current assignee: First Affiliated Hospital of Henan University of Science and Technology
Priority date: 2018-10-11
Filing date: 2018-10-11
Publication date: 2021-04-06
Anticipated expiration: 2038-10-11
Also published as: CN109157737A

Abstract

A brain drainage tube anti-blocking timing extrusion device comprises a cuboid-shaped base body, wherein a guide groove used for containing a brain drainage tube is formed in the upper surface of the base body, a first groove and a second groove are further formed in the base body, a first air cylinder is fixedly arranged in the first groove, an output shaft of the first air cylinder is connected with the drainage tube through a connector, a limiting plate is fixedly arranged in the second groove close to a through end, a second air cylinder is fixedly arranged in the second groove, a top plate is fixedly connected to the output shaft of the second air cylinder, and the top plate and the limiting plate are respectively located on two sides of the drainage tube; the base body is of a hollow structure, a controller is arranged in the base body, and a display screen and a control panel are further arranged on the base body. The drainage tube dredging device can automatically and regularly dredge the drainage tube, thereby greatly saving the time of medical staff, and effectively preventing the drainage tube from being blocked for a long time due to omission of the medical staff to endanger the health of a patient.

Description

Brain drainage tube prevents blockking up regularly extrusion device

Technical Field

The invention relates to a medical instrument, in particular to an anti-blocking timing extrusion device for a brain drainage tube.

Background

Because the cerebral vessels are spontaneously broken or suffer from external injury, intracranial hematoma or hydrocephalus can be formed, the intracranial pressure is increased, and a series of serious consequences are brought, so that the clinical spontaneous cerebral hemorrhage patients or traumatic intracranial hematoma patients need to perform extracerebral drainage or hematoma cavity drilling drainage. As shown in figure 1, many drainage methods are used in such operations, and it is common practice at present to insert a drainage tube 1 into a cranial cavity 3 for direct drainage, but the drainage effect is not ideal, and no method for solving the blockage of the drainage tube exists at present, especially the inlet end of the drainage tube 1 is easily blocked by a blood clot 2 in the cranial cavity 3.

In the prior art, in order to ensure smooth drainage, a medical worker needs to manually clean a blood stasis block 2 blocked at an inlet end of a drainage tube 1, and as shown in fig. 2, the drainage tube 1 is firstly bent to form a U-shaped bent section 4, one hand of the U-shaped bent section 4 is used for holding the U-shaped bent section 4, so that a pipe diameter contraction point 5 is formed at a bent part of the U-shaped bent section 4, then the other hand of the other hand is used for squeezing any point on the drainage tube 1 between the U-shaped bent section 4 and a cranial cavity 3, the point is called a squeezing point 6, and when squeezing, because the pipe diameter contraction point 5 is not smooth, liquid in the drainage tube 1 flows to the inlet end of the drainage tube 1, the blood stasis block 2 at the inlet end flows back into the cranial cavity 3 after being flushed, and then enters the drainage tube 1 again and is drained out of the cranial cavity 3.

The prior art can eliminate the blocking condition, but occupies a large amount of time of medical personnel, and when the patient is more, the condition that can not be handled in time appears very easily, and serious meeting leads to the patient to receive the injury.

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides the anti-blocking timing extrusion device for the brain drainage tube, which can automatically finish the extrusion of the drainage tube in a timing manner, thereby greatly saving the time of medical personnel, and effectively preventing the drainage tube from being blocked for a long time due to omission of the medical personnel to endanger the health of a patient.

In order to achieve the purpose, the invention adopts the specific scheme that: a timing extrusion device for preventing a brain drainage tube from being blocked comprises a cuboid-shaped base body, wherein a guide groove used for containing the brain drainage tube is formed in the upper surface of the base body, the guide groove extends along the length direction of the base body and penetrates through two end walls of the base body, a first groove and a second groove are further formed in the base body, the first groove and the second groove both extend along the width direction of the base body and penetrate through one side wall, close to the guide groove, of the base body, a first air cylinder is fixedly arranged in the first groove, an output shaft of the first air cylinder faces to a penetrating end of the first groove, the output shaft of the first air cylinder is connected with the drainage tube through a connector, a limiting plate is fixedly arranged in a position, close to the penetrating end, in the second groove, a second air cylinder is fixedly arranged in the second groove, the output shaft of the second air cylinder faces to the penetrating end of the second groove, and a top, the top plate and the limiting plate are respectively positioned at two sides of the drainage tube; the base member is hollow structure, is provided with the controller in the base member, still is provided with display screen and control panel on the base member, display screen, control panel first cylinder with the second cylinder all is connected with the controller electricity.

The drainage tube is characterized in that two groups of limiting wheels are further rotatably arranged on the base body, the number of each group of limiting wheels is a plurality, the two groups of limiting wheels are respectively positioned on two sides of the guide groove, and the limiting wheels are used for preventing the drainage tube from being separated from the guide groove.

The limiting wheel is coaxially and fixedly connected with a second rotating shaft, a rotating block is arranged in the base body in a rotating mode, the second rotating shaft penetrates into the base body and is coaxially and fixedly connected with the rotating block, an arc-shaped surface attached to the drainage tube is further arranged on the limiting wheel, and the radian of the arc-shaped surface is pi/6-pi/4.

The connector include two with the output shaft of first cylinder rotates the holder of being connected, respectively fixedly on two holders be provided with a connecting seat, enclose when two connecting seats paste mutually and close a screw, cooperate two holders fixed connection through a bolt and screw, enclose when just two holders fixed connection and close a cylindrical inner wall, cylindrical inner wall with the drainage tube is laminated mutually.

The limiting plate with the roof all sets up to the circular arc shaped plate, and the central angle that the limiting plate corresponds equals with the central angle that the roof corresponds, and the length of limiting plate is greater than the length of roof.

The control panel is provided with a switch key, a reset key, an interval increasing key and an interval reducing key.

Still including the apron, the apron is rectangular shaped plate, and an end baffle of each fixedly connected with of two minor faces of apron, end baffle and apron mutually perpendicular, one of them long limit of apron through first pivot with the other lateral wall of base member rotates to be connected, the long limit fixedly connected with lateral part baffle of the other of apron, lateral part baffle and apron are perpendicular and the height of lateral part baffle equals with end baffle's height.

The two end baffles are respectively provided with a first through hole, the side baffles are also provided with second through holes, and when the cover plate and the base body are folded, the first through holes are communicated with the guide grooves and the second through holes are communicated with the first grooves.

The cover plate is further provided with an observation window, and the observation window covers the display screen when the cover plate is folded with the base body.

The lateral baffle is fixedly connected with a plurality of clamping plates, and the base body is fixedly provided with a plurality of clamping points matched with the clamping plates.

Has the advantages that: the drainage tube extrusion device can automatically finish extrusion of the drainage tube at regular time, thereby greatly saving the time of medical staff, improving the working efficiency of the medical staff, and effectively preventing the drainage tube from being blocked for a long time due to omission of the medical staff to endanger the health of a patient.

Drawings

Fig. 1 is a schematic diagram of a brain drainage pattern;

FIG. 2 is a schematic diagram of a prior art method of clearing a blockage at the inlet end of a draft tube;

FIG. 3 is a schematic view of the overall structure of the present invention;

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

FIG. 5 is a schematic view of the draft tube arrangement of the present invention;

FIG. 6 is a schematic view of the connector configuration of the present invention;

fig. 7 is an adjustable structure diagram of the spacing wheel.

Reference numerals: 1-drainage tube, 2-blood clot, 3-cranial cavity, 4-U-shaped bent section, 5-tube diameter contraction point, 6-extrusion point, 7-limiting wheel, 8-basal body, 9-clamping point, 10-display screen, 11-first groove, 12-clamping piece, 13-first air cylinder, 14-control panel, 15-switch button, 16-interval increasing button, 17-reset button, 18-interval decreasing button, 19-limiting plate, 20-second groove, 21-top plate, 22-second air cylinder, 23-first rotating shaft, 24-cover plate, 25-end baffle, 26-first through hole, 27-clamping plate, 28-side baffle, 29-second through hole and 30-observation window, 31-guide groove, 32-charging interface, 33-arc surface, 34-second rotating shaft, 35-rotating block, 36-bolt, 37-connecting seat, 38-third rotating shaft, 39-rotating sleeve, 40-movable cavity and 41-displacement bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 3 to 7, fig. 3 is a schematic view of an overall structure of the present invention, fig. 4 is a schematic view of a base structure of the present invention, fig. 5 is a schematic view of a drainage tube arrangement manner of the present invention, fig. 6 is a schematic view of a connector structure of the present invention, and fig. 7 is a schematic view of an adjustable structure of a spacing wheel.

A brain drainage tube anti-blocking timing extrusion device comprises a cuboid-shaped base body 8, a guide groove 31 used for containing a brain drainage tube 1 is formed in the upper surface of the base body 8, the guide groove 31 extends along the length direction of the base body 8 and penetrates through two end walls of the base body 8, a first groove 11 and a second groove 20 are further formed in the base body 8, the first groove 11 and the second groove 20 both extend along the width direction of the base body 8 and penetrate through one side wall, close to the guide groove 31, of the base body 8, a first air cylinder 13 is fixedly arranged in the first groove 11, an output shaft of the first air cylinder 13 faces towards a penetrating end of the first groove 11, the output shaft of the first air cylinder 13 is connected with the drainage tube 1 through a connector, a limiting plate 19 is fixedly arranged in the second groove 20 and close to the penetrating end, a second air cylinder 22 is fixedly arranged in the second groove 20, and an output shaft of the second air cylinder 22 faces towards the penetrating end of the second groove 20, a top plate 21 is fixedly connected to an output shaft of the second cylinder 22, and the top plate 21 and the limiting plate 19 are respectively positioned at two sides of the drainage tube 1; the base body 8 is of a hollow structure, a controller is arranged in the base body 8, a display screen 10 and a control panel 14 are further arranged on the base body 8, and the display screen 10, the control panel 14, the first air cylinder 13 and the second air cylinder 22 are all electrically connected with the controller.

As shown in FIG. 3, the direction A is a normal drainage direction of the drain tube 1, and the direction B is a flow direction of a liquid in the drain tube 1 when the drain tube 1 is squeezed. Before use, the drainage tube 1 is installed, the inflow end of the drainage tube 1 is inserted into the cranial cavity 3 of a patient, a part of the drainage tube 1 close to the cranial cavity 3 is fixed, specifically, the drainage tube 1 can be fixed on the head of a sickbed, then the output shaft of the first cylinder 13 at a certain point on the drainage tube 1 is connected by using a connector, the point is called as a connection point, and finally the drainage tubes 1 at two sides of the connection point are placed into the guide groove 31. After installation, the time interval for timed compressions is set by the control panel 14, which may typically be set to thirty minutes, and the set time interval is displayed on the display screen 10. Then, in the drainage process, every thirty minutes, the controller firstly controls the first air cylinder 13 to output, the first air cylinder 13 pushes the connector to move, the connector bends the drainage tube 1 to form the U-shaped bent section 4 in the moving process, and simultaneously, the pipe diameter contraction point 5 is formed at the bending part, because a part of the drainage tube 1 close to the cranial cavity 3 of the patient is fixed, the drainage tube 1 cannot be drawn out from the cranial cavity 3 in the bending process. Then the controller controls the output of the second cylinder 22, the second cylinder 22 pushes the top plate 21 to move, the top plate 21 pushes the drainage tube 1 to the limiting plate 19 in the moving process, the drainage tube 1 is extruded through the matching of the top plate 21 and the limiting plate 19, part of liquid in the drainage tube 1 flows towards the cranial cavity 3, and finally the blood stasis block 2 is impacted at the inflow end of the drainage tube 1, so that the purposes of extruding the drainage tube 1 and avoiding the blockage of the drainage tube 1 are achieved. After the extrusion is completed, the controller controls the first cylinder 13 and the second cylinder 22 to be reset, and the drainage tube 1 is restored to the normal drainage operation.

The invention can automatically and regularly complete the extrusion of the drainage tube 1, ensure the smooth drainage of the drainage tube, drain the extravasated blood in the brain to the outside of the body in time, shorten the retention time of the drainage tube, promote the recovery of patients and reduce the number of hospitalization days, thereby reducing the medical cost of the patients. Moreover, the time of medical staff can be greatly saved, the working efficiency of the medical staff is improved, and the effect that the health of a patient is endangered due to the fact that the drainage tube 1 is blocked for a long time due to omission of the medical staff can be effectively prevented.

Still rotate on base member 8 and be provided with two sets of spacing wheels 7 that are used for preventing that drainage tube 1 breaks away from the guide way 31, the quantity of every spacing wheel 7 of group is a plurality of, and two sets of spacing wheels 7 are located the both sides of guide way 31 respectively. The specific setting mode of the limiting wheel 7 is as follows: the limiting wheel 7 is coaxially and fixedly connected with a second rotating shaft 34, a rotating block 35 is arranged in the base body 8 in a rotating mode, the second rotating shaft 34 penetrates into the base body 8 and is coaxially and fixedly connected with the rotating block 35, an arc-shaped surface 33 attached to the drainage tube 1 is further arranged on the limiting wheel 7, and the radian of the arc-shaped surface 33 is pi/6-pi/4. In the process of putting into the guide way 31 with drainage tube 1, can extrude drainage tube 1 earlier, make the radial width of drainage tube 1 reduce, can follow smoothly and pass through between two sets of spacing wheels 7, after drainage tube 1 entered into the guide way 31, kick-backs to normal condition automatically, the curved surface 33 of laminating on two sets of spacing wheels 7 of closing of drainage tube 1 after the completion of kick-backing to the realization utilizes spacing wheel 7 to prevent that drainage tube 1 from breaking away from in the guide way 31. Meanwhile, when the first cylinder 13 bends the drainage tube 1, the limiting wheel 7 can rotate around the second rotating shaft 34, so that the limiting wheel 7 cannot obstruct the movement of the drainage tube 1.

A set of spacing wheels 7 near the edge can also be set as an adjustable structure, and the specific structure is: the movable cavity 40 is formed in the base body 8, the rotating sleeve 39 is movably arranged in the movable cavity 40, the rotating block 50 is rotatably arranged in the rotating sleeve 39, the rotating sleeve 39 is further rotatably connected with a displacement bolt 41, the displacement bolt 41 extends in the width direction of the base body 8 and is in threaded fit with the base body 8, and the head of the displacement bolt 41 penetrates out of the base body 8. The specific rotational connection of the displacement bolt 41 to the rotating sleeve 39 may be a universal joint connection. Through adjustable structure, can satisfy not unidimensional drainage tube 1's use needs through adjusting the distance between two sets of spacing wheels 7, specific regulation mode makes displacement bolt 41 remove along the width direction of base member 8 for rotating displacement bolt 41, and then drives in proper order and rotates cover 39 and turning block 35 and remove along the width direction of base member 8 in activity chamber 40, finally changes the distance between two sets of spacing wheels 7. When using this structure, the size of guide way 31 can be confirmed according to the model of whole drainage tubes 1 to can hold the drainage tube 1 of maximum size as the standard, like this when needing to use the less drainage tube 1 of size, just can guarantee that spacing wheel 7 can press close to drainage tube 1, thereby play the limiting displacement to drainage tube 1.

The specific structure of the connector is as follows: the connector includes two holders 12 that are connected with the output shaft rotation of first cylinder 13, holder 12 realizes rotating with the output shaft of first cylinder 13 through third pivot 38 and is connected, respectively fixedly on two holders 12 is provided with a connecting seat 37, enclose a screw when two connecting seats 37 laminate mutually, cooperate two holders 12 fixed connection through a bolt 36 and screw, and enclose a cylindrical inner wall when two holders 12 fixed connection, cylindrical inner wall laminates with drainage tube 1 mutually. When connecting the connector with the connection point on drainage tube 1, at first unscrew bolt 36 from the screw, make two holder 12 alternate segregation, later put into between two holder 12 drainage tube 1, rotate two holder 12 again and make two connecting seats 37 laminate each other and enclose out the screw, it can to reuse the cooperation of bolt 36 and screw to connect two connecting seats 37. In other embodiments of the present invention, the two connection bases 37 may be connected by the cooperation of a plug and a socket, or by magnetic cooperation, or by a hook and loop fastener.

Further, all set up limiting plate 19 and roof 21 into the circular arc shaped plate, the central angle that limiting plate 19 corresponds equals with the central angle that roof 21 corresponds, and limiting plate 19's length is greater than the length of roof 21. When the limiting plate 19 and the top plate 21 are connected with the drainage tube 1, the contact surfaces are arc surfaces without edges and corners, so that the drainage tube 1 can be prevented from being damaged when being extruded. Meanwhile, the limiting plate 19 and the top plate 21 can be attached seamlessly, and the situation that the liquid volume discharged from the drainage tube 1 is too small to dredge in the extrusion process can be avoided.

According to the actual situation of the patient, the time interval of the squeezing can be set to different values, but the squeezing time interval can be set to be stable, but the squeezing time interval can be kept to be stable, and the squeezing speed can not be neglected, so as to avoid the interference of irrelevant personnel on the time interval or the drainage tube 1, the invention also comprises a cover plate 24, wherein the cover plate 24 is a rectangular plate, two short sides of the cover plate 24 are respectively and fixedly connected with an end baffle 25, the end baffles 25 and the cover plate 24 are mutually vertical, one long side of the cover plate 24 is rotatably connected with the other side wall of the base body 8 through a first rotating shaft 23, the other long side of the cover plate 24 is fixedly connected with a side baffle 28, the side baffle 28 is vertical to the cover plate. After the time interval has been set and drainage has begun, the cover plate 24 is placed over the base body 8 to protect the various components on the base body 8.

On the basis of arranging the cover plate 24, in order to avoid the cover plate 24 from influencing the drainage tube 1 and the first air cylinder 13, two end baffles 25 of the cover plate 24 are respectively provided with a first through hole 26, the side baffles 28 are also provided with second through holes 29, when the cover plate 24 is folded with the base body 8, the first through holes 26 are communicated with the guide grooves 31, and the second through holes 29 are communicated with the first grooves 11, when the cover plate 24 is covered on the base body 8, the drainage tube 1 can pass through the first through holes 26, and the connector can pass through the second through holes 29. In order to avoid the cover plate 24 from being opened due to the movement of a patient and the like in the using process, a plurality of clamping plates 27 are fixedly connected to the side baffle 28, a plurality of clamping points 9 matched with the clamping plates 27 are fixedly arranged on the base body 8, and the cover plate 24 is locked through the matching of the clamping plates 27 and the clamping points 9 when the cover plate 24 is covered on the base body 8.

Considering that medical staff needs to accurately master the condition of a patient when patrolling a ward, if the time interval is observed by opening the cover plate 24 every time, the observation window 30 is also arranged on the cover plate 24, and the observation window 30 is covered on the display screen 10 when the cover plate 24 is folded with the base body 8.

In the invention, the controller selects a single chip microcomputer, the control panel 14 is provided with a switch key 15, a reset key 17, an interval increasing key 16 and an interval decreasing key 18, and the single chip microcomputer controls the display screen 10, the first air cylinder 13 and the second air cylinder 22 through the driving circuit, which are conventional technical means, and the structure and the connection mode of the single chip microcomputer are not described again. Meanwhile, a power supply is further provided inside the base body 8, and a charging interface 32 for charging the power supply is provided at a side portion of the base body 8.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a brain drainage tube prevents blockking up regularly extrusion device which characterized in that: comprises a cuboid-shaped base body (8), a guide groove (31) used for accommodating a drainage tube (1) for brain drainage is formed in the upper surface of the base body (8), the guide groove (31) extends along the length direction of the base body (8) and penetrates through two end walls of the base body (8), a first groove (11) and a second groove (20) are further formed in the base body (8), the first groove (11) and the second groove (20) both extend along the width direction of the base body (8) and penetrate through one side wall, close to the guide groove (31), of the base body (8), a first air cylinder (13) is fixedly arranged in the first groove (11), an output shaft of the first air cylinder (13) faces a penetrating end of the first groove (11), the output shaft of the first air cylinder (13) is connected with the drainage tube (1) through a connector, a limiting plate (19) is fixedly arranged in the second groove (20) and close to the penetrating end, a second cylinder (22) is fixedly arranged in the second groove (20), an output shaft of the second cylinder (22) faces to a through end of the second groove (20), a top plate (21) is fixedly connected to the output shaft of the second cylinder (22), and the top plate (21) and the limiting plate (19) are respectively positioned on two sides of the drainage tube (1);

the base body (8) is of a hollow structure, a controller is arranged in the base body (8), a display screen (10) and a control panel (14) are further arranged on the base body (8), and the display screen (10), the control panel (14), the first air cylinder (13) and the second air cylinder (22) are all electrically connected with the controller;

still rotate on base member (8) and be provided with two sets of spacing wheels (7), the quantity of every spacing wheel of group (7) is a plurality of, and two sets of spacing wheels (7) are located respectively the both sides of guide way (31), and spacing wheel (7) are used for preventing drainage tube (1) is followed break away from in guide way (31).

2. The anti-clogging timed extrusion device for the brain drainage tube according to claim 1, characterized in that: spacing round (7) coaxial second pivot (34) that has linked firmly, the base member (8) internal rotation is provided with turning block (35), and second pivot (34) penetrate in base member (8) and link firmly with turning block (35) is coaxial, still is provided with arcwall face (33) of laminating mutually with drainage tube (1) on spacing round (7), and the radian of arcwall face (33) is for drainage tube (1)π/6~π/4。

3. The anti-clogging timed extrusion device for the brain drainage tube according to claim 1, characterized in that: the connector include two with output shaft rotation of first cylinder (13) connects holder (12), respectively fixedly on two holders (12) be provided with a connecting seat (37), encloses when laminating mutually two connecting seats (37) and closes a screw, through a bolt (36) and screw cooperation with two holders (12) fixed connection, and enclose when just two holders (12) fixed connection and close a cylindrical inner wall, cylindrical inner wall with drainage tube (1) laminates mutually.

4. The anti-clogging timed extrusion device for the brain drainage tube according to claim 1, characterized in that: limiting plate (19) with roof (21) all sets up to the circular arc shaped plate, and the central angle that limiting plate (19) correspond equals with the central angle that roof (21) correspond, and the length of limiting plate (19) is greater than the length of roof (21).

5. The anti-clogging timed extrusion device for the brain drainage tube according to claim 1, characterized in that: the control panel (14) is provided with a switch key (15), a reset key (17), an interval increasing key (16) and an interval decreasing key (18).

6. The anti-clogging timed extrusion device for the brain drainage tube according to claim 1, characterized in that: still include apron (24), apron (24) are rectangular shaped plate, an end baffle (25) of each fixedly connected with of two minor faces of apron (24), end baffle (25) and apron (24) mutually perpendicular, one of them long limit of apron (24) through first pivot (23) with the other lateral wall of base member (8) rotates and is connected, the other long limit fixedly connected with lateral part baffle (28) of apron (24), lateral part baffle (28) are perpendicular and the height of lateral part baffle (28) is equal with the height of end baffle (25) with apron (24).

7. The anti-clogging timed extrusion device for the brain drainage tube according to claim 6, characterized in that: the two end baffles (25) are respectively provided with a first through hole (26), the side baffles (28) are also provided with second through holes (29), when the cover plate (24) is folded with the base body (8), the first through holes (26) are communicated with the guide grooves (31), and the second through holes (29) are communicated with the first grooves (11).

8. The anti-clogging timed extrusion device for the brain drainage tube according to claim 6, characterized in that: the cover plate (24) is further provided with an observation window (30), and when the cover plate (24) is folded with the base body (8), the observation window (30) covers the display screen (10).

9. The anti-clogging timed extrusion device for the brain drainage tube according to claim 6, characterized in that: the side baffle (28) is fixedly connected with a plurality of clamping plates (27), and the base body (8) is fixedly provided with a plurality of clamping points (9) matched with the clamping plates (27).