Anti-blocking mute centrifugal fan

Abstract

The invention relates to the technical field of fans, and discloses an anti-blocking mute centrifugal fan which comprises a fixing base, a pair of positioning frames, a fan shell, a dustproof frame and an air guide frame, the positioning frames are installed on the fixing base, the fan shell is installed between the positioning frames, the interior of an air outlet of the fan shell is rectangular, a plurality of clamping grooves are formed in the side wall of the dustproof frame, and the clamping grooves are connected with the air guide frame. Positioning base plates are installed in the clamping grooves, and a separating mechanism is arranged between the positioning base plates. Compared with the prior art, when airflow passes through the dustproof frame, the transmission shaft can be driven to do circular motion under the action of the fixed fan blades, so that the reset ring at the bottom deforms under the action of the transmission shaft, the piston rod at the bottom moves, and the position of the piston rod is changed by means of the movement of the reset ring under the conditions that the airflow speed changes and the like; and the piston pipe can stretch out and draw back in the radial direction under the air pressure effect, the transmission ring frame and the cleaning plate can move along with the piston pipe, the interior of the limiting sieve plate can be cleaned, and the dust and other blocking conditions are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of fans, and in particular to an anti-blocking and silent centrifugal fan. Background Art

[0002] A centrifugal fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Centrifugal fans are widely used in ventilation, dust removal and cooling in factories, mines, tunnels, cooling towers, vehicles, ships and buildings.

[0003] During the use of centrifugal fans, tiny particles such as dust and paper scraps in the environment can easily enter the centrifugal fan through the air inlet and gradually accumulate at the air outlet during long-term use. Blockage causes the ventilation area to be reduced, which reduces the air volume and directly affects the air flow and ventilation effect. The blockage of the air outlet causes the internal pressure of the fan to rise, affecting the exhaust efficiency and performance of the fan, resulting in an increased probability of abnormal noise during operation. For this reason, we propose an anti-blocking silent centrifugal fan to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a blockage-proof silent centrifugal fan to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-blocking silent centrifugal fan, comprising a fixed seat, a pair of positioning frames arranged on the top of the fixed seat, a fan housing located between the positioning frames, and a dust frame and an air guide frame installed at one end of the fan housing, the positioning frames are installed on the fixed seat, the positioning frames are arranged in parallel, the fan housing is installed between the positioning frames, the positioning frames are provided with circular grooves, the two ends of the fan housing are respectively provided with air inlet frames and control motors, and the air inlet frames and control motors are arranged concentrically with the circular grooves on both sides;

[0006] The interior of the air outlet of the fan housing is rectangular, the dust frame and the air guide frame are arranged along the radial direction of the air outlet, a plurality of clamping grooves are opened on the side wall of the dust frame, and positioning pads are installed inside the clamping grooves, a separation mechanism is provided between the positioning pads, the positioning pads are triangular in shape, and a buffer pad is installed on the outer wall, the buffer pad is made of elastic material and is "L" shaped, the buffer pad is clamped on the inner wall of the air outlet, during the operation of the centrifugal fan, the external airflow can be poured into the air outlet and discharged, with the action of the airflow, the separation mechanism can be driven to operate, and the dust and debris accumulated inside the dust frame can be collected or exported, reducing the internal blockage, and the air guide frame can be used to guide and transmit the airflow, and it can also cooperate with the adsorption shaft to play a role in dust reduction, reducing the flying of dust.

[0007] Preferably, a pair of limiting sieve plates are further provided inside the dustproof frame, a plurality of blocking plates are provided between the limiting sieve plates, the blocking plates are clamped on the inner wall of the dustproof frame, the limiting sieve plates are installed at both ends of the blocking plates, the limiting sieve plates are located on both sides of the separation mechanism, and the limiting sieve plates can play a role in blocking dust and reduce the dust from being discharged directly along the air guide frame.

[0008] Preferably, a plurality of fixed sieve rings are installed inside the limiting sieve plate, and the fixed sieve rings are arranged in a uniform array inside the fixed piston plate. A plurality of noise reduction components are provided inside the limiting sieve plate, and the noise reduction components are composed of a pair of rubber shafts, and the rubber shafts are clamped at both ends of the fixed sieve rings to reduce the noise inside the fan, thereby playing a noise reduction role.

[0009] Preferably, the separation mechanism comprises a plurality of clamping frames and positioning rings, the clamping frames are mounted on the positioning pads, the positioning rings are mounted between the clamping frames, a plurality of U-shaped shafts are arranged inside the positioning rings, and the positions of the U-shaped shafts correspond to the clamping frames.

[0010] Preferably, a plurality of piston tubes are installed inside the positioning ring, the position of the piston tubes corresponds to the U-shaped shaft, the top of the piston tube passes through the U-shaped shaft, the bottom of the piston tube is elastic and can move radially, and a plurality of transmission ring frames are installed on the two side surfaces of the piston tube, and the transmission ring frames are concentrically arranged;

[0011] A plurality of cleaning plates are installed on the outer wall of the transmission ring frame. The cross-section of the cleaning plates is "U"-shaped. A plurality of adsorption rings are installed inside the cleaning plates, and nylon barbs are provided on the surfaces of the adsorption rings. The dust shaken off during cleaning can be quickly adsorbed by the nylon barbs, and the dust can be stuck between the cleaning plates to facilitate subsequent maintenance and cleaning.

[0012] Preferably, a fixing groove is provided inside the clamping frame, and a transmission shaft is rotatably provided inside the fixing groove, a plurality of fixed fan blades are evenly installed on the outer wall of the transmission shaft, the bottom of the transmission shaft passes through the bottom of the clamping frame, a reset ring is installed at the bottom of the transmission shaft, the reset ring can follow the transmission shaft for circular motion inside the U-shaped shaft, a piston rod is installed at the bottom of the reset ring, and the piston rod is inserted inside the piston tube, the piston rod can move under the action of the reset ring, the air pressure inside the piston tube can be changed to make it move radially, and the limiting ring frame and the cleaning plate can be driven to move.

[0013] Preferably, a pair of positioning plug plates are installed at the rear end of the air guide frame, and the positioning plug plates are installed on the dustproof frame. A pair of positioning rods are installed on the inner wall of the air guide frame, and a plurality of air guide plates are rotatably arranged between the positioning rods. Metal rods are installed on both sides of the bottom end of the air guide plates, and a plurality of arc grooves are opened on the positioning rods, and the metal rods are movably clamped inside the arc grooves. A sliding shaft is movably clamped on the outer side of the positioning rod, and one end of the metal rod can be inserted into the sliding shaft and can move with the help of the sliding shaft, thereby changing the position of the metal rod and adjusting the angle of the air guide plate.

[0014] Preferably, a plurality of elastic rods are inserted on the surface of the air guide plate, and the elastic rods are rectangular. The elastic rods can be pressed against the surface of the air guide plate at the lower end to assist in stability. A docking groove is provided inside the elastic rod, and an adsorption shaft can be clamped inside the docking groove, and the adsorption shaft can further adsorb dust in the airflow.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When the airflow passes through the dustproof frame, the present invention can drive the transmission shaft to make circular motion under the action of the fixed fan blades, so that the reset ring transmission shaft at the bottom is deformed under the action of the reset ring, so that the piston rod at the bottom moves, and when the airflow speed changes, the position of the piston rod is changed by the reset ring movement, so that the piston tube can be radially extended and retracted under the action of air pressure, and the transmission ring frame and the cleaning plate can follow the movement of the piston tube, so that the inside of the limit screen plate can be cleaned to reduce the blockage of dust and the like;

[0017] 2. The present invention can produce a small amount of extrusion between the cleaning plate and the noise reduction component during the movement of the cleaning plate, so that the fallen dust and debris can be collected between the nylon barbs inside the cleaning plate, and the dust and hair can be compacted with the swinging and squeezing, so as to facilitate the subsequent unified treatment;

[0018] 3. In the present invention, during the air flow transmission process, the fixed sieve ring inside the limit sieve plate will vibrate, resulting in internal noise. With the help of the noise reduction component, the noise generated during the use of the equipment can be reduced by vibration and noise reduction;

[0019] 4. When the present invention is discharged through airflow, the transmission direction of the airflow can be adjusted under the action of the air guide frame, and the operator can control the transmission direction of the airflow by adjusting the sliding shaft, and the adsorption shaft can be clamped inside the elastic plug rod, which can further adsorb the dust in the airflow and reduce the situation where the dust flies with the airflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the blower housing disassembly structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the dustproof frame of the present invention;

[0023] Figure 4 It is a schematic diagram of the separation mechanism structure of the present invention;

[0024] Figure 5 For the present invention Figure 4 A partial enlarged schematic diagram in the middle;

[0025] Figure 6 It is a schematic diagram of the structure of the air guide frame of the present invention;

[0026] Figure 7 For the present invention Figure 6 A partial enlarged schematic diagram of point B in the middle;

[0027] In the figure: 1, fixed seat; 2, dustproof frame; 3, separation mechanism; 4, air guide frame; 11, positioning frame; 12, fan housing; 13, air inlet frame; 21, buffer pad; 22, positioning pad; 23, blocking plate; 24, limit screen plate; 25, noise reduction component; 31, clamping frame; 32, positioning ring; 33, transmission shaft; 331, fixed fan blade; 34, piston tube; 35, transmission ring frame; 36, cleaning plate; 37, reset ring; 41, air guide plate; 42, positioning rod; 43, positioning plug plate; 44, elastic plug rod; 45, sliding shaft. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 7 The present invention provides a technical solution: a blocking-proof silent centrifugal fan, comprising a fixing seat 1, a pair of positioning frames 11 arranged on the top of the fixing seat 1, a fan housing 12 located between the positioning frames 11, and a dust frame 2 and an air guide frame 4 installed at one end of the fan housing 12, the positioning frames 11 are installed on the fixing seat 1, the positioning frames 11 are arranged in parallel, the fan housing 12 is installed between the positioning frames 11, circular grooves are opened on the positioning frames 11, and air inlet frames 13 and a control motor are respectively installed at both ends of the fan housing 12, and the air inlet frames 13 and the control motor are arranged concentrically with the circular grooves on both sides;

[0030] The interior of the air outlet of the fan housing 12 is rectangular, and the dust frame 2 and the air guide frame 4 are arranged along the radial direction of the air outlet. A plurality of snap-in grooves are provided on the side wall of the dust frame 2, and a positioning pad 22 is installed inside the snap-in groove. A separation mechanism 3 is provided between the positioning pads 22. The positioning pad 22 is triangular in shape and a buffer pad 21 is installed on the outer wall. The buffer pad 21 is made of elastic material and is in an "L" shape. The buffer pad 21 is clamped on the inner wall of the air outlet. During the operation of the centrifugal fan, the external airflow can be poured into the air outlet and discharged. With the action of the airflow, the separation mechanism 3 can be driven to operate, and the dust and debris accumulated inside the dust frame 2 can be collected or exported to reduce the internal blockage. The air guide frame 4 can guide and transmit the airflow, and it can also cooperate with the adsorption shaft to play a role in dust reduction and reduce the flying of dust.

[0031] like Figure 3 As shown, in order to reduce the discharge of dust and the like along the air flow, a pair of limiting sieve plates 24 are further provided inside the dustproof frame 2, and a plurality of blocking plates 23 are provided between the limiting sieve plates 24. The blocking plates 23 are clamped on the inner wall of the dustproof frame 2, and the blocking plates 23 can be disassembled and assembled. Rubber pads are provided on the edges to press against the limiting sieve plates 24 to reduce the internal noise during operation. The limiting sieve plates 24 are installed at both ends of the blocking plates 23. The limiting sieve plates 24 are located on both sides of the separation mechanism 3. The limiting sieve plates 24 can play a role in blocking dust and block dust and the like.

[0032] like Figure 3 As shown, since internal noise is easily generated during the transmission of internal airflow, a plurality of fixed sieve rings are installed inside the limiting sieve plate 24. The fixed sieve rings can vibrate under the action of airflow, causing noise inside the equipment, and the fixed sieve rings are arranged in a uniform array inside the fixed piston plate. A plurality of noise reduction components 25 are arranged inside the limiting sieve plate 24. The noise reduction components 25 are composed of a pair of rubber shafts, and the rubber shafts are clamped at both ends of the fixed sieve rings to reduce the noise inside the fan. The noise reduction components 25 can be evenly arranged in an array on the limiting sieve plate 24, which can play a role in buffering and shock absorption, reduce the internal vibration of parts caused by airflow, and reduce the overall noise.

[0033] like Figure 4 As shown, the separation mechanism 3 includes a plurality of clamping frames 31 and positioning rings 32. The clamping frames 31 are installed on the positioning pads 22. The positioning rings 32 are installed between the clamping frames 31. A plurality of U-shaped shafts are provided inside the positioning rings 32. The positions of the U-shaped shafts correspond to the clamping frames 31. The positions of the positioning rings 32 correspond to the limiting screen plates 24, which are used to collect dust and debris inside and reduce the reduction in the cross-section of airflow transmission.

[0034] like Figure 5As shown, in order to reduce the increase of wind pressure inside the equipment caused by internal dust blockage during the operation of the equipment, generating abnormal noise, etc., a plurality of piston tubes 34 are installed inside the positioning ring 32, the position of the piston tube 34 corresponds to the U-shaped shaft, the top of the piston tube 34 passes through the U-shaped shaft, the bottom of the piston tube 34 is elastic and can move radially, and a plurality of transmission ring frames 35 are installed on the surfaces of both sides of the piston tube 34, and the transmission ring frames 35 are concentrically arranged;

[0035] A plurality of cleaning plates 36 are installed on the outer wall of the transmission ring frame 35. The cross-section of the cleaning plates 36 is "U"-shaped. A plurality of adsorption rings are installed inside the cleaning plates 36. Nylon barbs are provided on the surfaces of the adsorption rings. The dust and debris shaken off are adsorbed on the nylon barbs. The cleaning plates 36 can follow the deformation of the piston tube 34 and be squeezed between the noise reduction component 25 to compact the dust and debris between the cleaning plates 36.

[0036] like Figure 5 As shown, in order to reduce the accumulation of internal dust and the influence on the normal operation of the equipment, a fixed groove is opened inside the clamping frame 31, and a transmission shaft 33 is rotatably arranged inside the fixed groove, and a plurality of fixed blades 331 are evenly installed on the outer wall of the transmission shaft 33, and the bottom of the transmission shaft 33 passes through the bottom of the clamping frame 31, and a reset ring 37 is installed at the bottom of the transmission shaft 33, and the reset ring 37 can follow the transmission shaft 33 in the circular motion inside the U-shaped shaft, and a piston rod is installed at the bottom of the reset ring 37, and the piston rod is inserted in the piston tube 34, and the airflow passes through the dustproof When the frame 2 is moved, the drive shaft 33 can be driven to make a circular motion under the action of the fixed fan blades 331, so that the reset ring 37 at the bottom is deformed under the action of the drive shaft 33, so that the bottom piston rod moves, and when the air flow speed changes, the force exerted on the reset ring 37 will also change, changing the position of the piston rod, so that the piston tube 34 can move under the action of air pressure, and the transmission ring frame 35 and the cleaning plate 36 can move with the piston tube 34, so as to clean the inside of the limiting screen plate 24 and reduce the blockage of dust and the like.

[0037] like Figure 6 As shown, the transmission direction of the airflow can be adjusted during use, a pair of positioning plug plates 43 are installed at the rear end of the air guide frame 4, the positioning plug plates 43 are installed on the dustproof frame 2, and a pair of positioning rods 42 are installed on the inner wall of the air guide frame 4, and a plurality of air guide plates 41 are rotatably arranged between the positioning rods 42. Metal rods are installed on both sides of the bottom end of the air guide plates 41, and a plurality of arc grooves are opened on the positioning rods 42, and the metal rods are movably clamped inside the arc grooves. A sliding shaft 45 is movably clamped on the outer side of the positioning rod 42, and one end of the metal rod can be inserted into the sliding shaft 45. When the airflow is discharged, the transmission direction of the airflow can be adjusted under the action of the air guide frame 4, and the operator can control the transmission direction of the airflow by adjusting the sliding shaft 45.

[0038] like Figure 7As shown, there will be dust in the airflow that will be discharged along the airflow. A plurality of elastic plug rods 44 are inserted on the surface of the air guide plate 41. The elastic plug rods 44 are rectangular. The elastic plug rods 44 can be against the surface of the lower end of the air guide plate 41 to assist in stability. A docking groove is provided inside the elastic plug rod 44, and an adsorption shaft can be clamped inside the docking groove. The adsorption shaft can be clamped inside the elastic plug rod 44, which can further adsorb the dust in the airflow and reduce the situation where dust flies with the airflow. The elastic plug rods 44 can make the air guide plates 41 press together with the help of the elastic plug rods 44, which can reduce the shaking of the air guide plates 41 during the airflow discharge process.

[0039] Working principle: First, during the operation of the centrifugal fan, the external airflow can be poured into the air outlet and discharged. With the action of the airflow, the separation mechanism 3 can be driven to operate, and the dust and debris accumulated inside the dustproof frame 2 can be collected or discharged to reduce the internal blockage. The airflow can be guided and transmitted with the help of the air guide frame 4, and the adsorption shaft can also be used to reduce dust and reduce the flying of dust. When the airflow passes through the dustproof frame 2, the transmission shaft 33 can be driven to move in a circular motion under the action of the fixed fan blades 331, so that the reset ring 37 at the bottom is deformed under the action of the transmission shaft 33, so that the piston rod at the bottom moves, and when the airflow speed changes, the force on the reset ring 37 will also change, changing the position of the piston rod, so that the piston tube 34 can be moved under the action of air pressure, and the transmission ring frame 35 and the cleaning plate 36 can move with the piston tube 34, so as to clean the inside of the limit screen plate 24 and reduce the blockage of dust.

[0040] Then, during the movement of the cleaning plate 36, a small amount of squeezing can be generated between the cleaning plate 36 and the noise reduction component 25, so that the fallen dust and debris can be collected between the nylon barbs inside the cleaning plate 36, and with the swinging squeezing, the dust and hair can be compacted, which is convenient for subsequent unified treatment. In addition, during the airflow transmission process, the fixed sieve ring inside the limiting sieve plate 24 will shake, resulting in internal noise. With the help of the noise reduction component 25, the noise reduction component 25 can play a role in shock absorption and noise reduction, thereby reducing the noise generated during the use of the equipment.

[0041] Finally, when the airflow is discharged, the transmission direction of the airflow can be adjusted under the action of the air guide frame 4, and the operator can control the transmission direction of the airflow by adjusting the sliding shaft 45, and the adsorption shaft can be clamped inside the elastic plug rod 44, which can further adsorb the dust in the airflow and reduce the situation where dust flies with the airflow.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blockage-proof silent centrifugal fan, comprising a fixing seat (1), a pair of positioning frames (11) arranged on the top of the fixing seat (1), a fan housing (12) located between the positioning frames (11), and a dustproof frame (2) and an air guide frame (4) installed at one end of the fan housing (12), characterized in that: The positioning frames (11) are mounted on the fixing base (1), the positioning frames (11) are arranged in parallel, the fan housing (12) is mounted between the positioning frames (11), the positioning frames (11) are provided with circular grooves, the two ends of the fan housing (12) are respectively provided with air inlet frames (13) and control motors, the air inlet frames (13) and control motors are arranged concentrically with the circular grooves on both sides; The interior of the air outlet of the fan housing (12) is rectangular, the dustproof frame (2) and the air guide frame (4) are arranged along the radial direction of the air outlet, a plurality of clamping grooves are provided on the side wall of the dustproof frame (2), and positioning pads (22) are installed inside the clamping grooves, a separation mechanism (3) is provided between the positioning pads (22), the positioning pads (22) are triangular in shape, and a buffer pad (21) is installed on the outer wall, the buffer pad (21) is made of elastic material and is in an "L" shape, and the buffer pad (21) is clamped on the inner wall of the air outlet.

2. The anti-blocking silent centrifugal fan according to claim 1, characterized in that: A pair of limiting sieve plates (24) are further provided inside the dustproof frame (2), a plurality of blocking plates (23) are provided between the limiting sieve plates (24), the blocking plates (23) are clamped on the inner wall of the dustproof frame (2), the limiting sieve plates (24) are mounted at both ends of the blocking plates (23), and the limiting sieve plates (24) are located on both sides of the separation mechanism (3).

3. The anti-blocking silent centrifugal fan according to claim 2, characterized in that: A plurality of fixed sieve rings are installed inside the limiting sieve plate (24), and the fixed sieve rings are arranged in a uniform array inside the fixed piston plate. A plurality of noise reduction components (25) are arranged inside the limiting sieve plate (24), and the noise reduction components (25) are composed of a pair of rubber shafts, and the rubber shafts are clamped at both ends of the fixed sieve rings to reduce the noise inside the fan.

4. The anti-blocking silent centrifugal fan according to claim 1, characterized in that: The separation mechanism (3) comprises a plurality of clamping frames (31) and positioning rings (32); the clamping frames (31) are mounted on the positioning pad (22); the positioning rings (32) are mounted between the clamping frames (31); a plurality of U-shaped shafts are arranged inside the positioning rings (32), and the positions of the U-shaped shafts correspond to the clamping frames (31).

5. The anti-blocking silent centrifugal fan according to claim 4, characterized in that: A plurality of piston tubes (34) are installed inside the positioning ring (32), the position of the piston tubes (34) corresponds to the U-shaped shaft, the top of the piston tube (34) passes through the U-shaped shaft, the bottom of the piston tube (34) is elastic and can move in the radial direction, and a plurality of transmission ring frames (35) are installed on the surfaces of both sides of the piston tube (34), and the transmission ring frames (35) are concentrically arranged; A plurality of cleaning plates (36) are mounted on the outer wall of the transmission ring frame (35), the cross section of the cleaning plates (36) being U-shaped, a plurality of adsorption rings are mounted inside the cleaning plates (36), and nylon barbs are provided on the surfaces of the adsorption rings.

6. The anti-blocking silent centrifugal fan according to claim 5, characterized in that: A fixing groove is provided inside the clamping frame (31), and a transmission shaft (33) is rotatably provided inside the fixing groove; a plurality of fixed blades (331) are evenly mounted on the outer wall of the transmission shaft (33); the bottom of the transmission shaft (33) passes through the bottom of the clamping frame (31); a reset ring (37) is mounted on the bottom of the transmission shaft (33); the reset ring (37) can follow the transmission shaft (33) to perform circular motion inside the U-shaped shaft; a piston rod is mounted on the bottom of the reset ring (37), and the piston rod is inserted into the piston tube (34).

7. The anti-blocking silent centrifugal fan according to claim 1, characterized in that: A pair of positioning plug plates (43) are installed at the rear end of the air guide frame (4), and the positioning plug plates (43) are installed on the dustproof frame (2). A pair of positioning rods (42) are installed on the inner wall of the air guide frame (4), and a plurality of air guide plates (41) are rotatably arranged between the positioning rods (42). Metal rods are installed on both sides of the bottom ends of the air guide plates (41). A plurality of arc grooves are opened on the positioning rods (42), and the metal rods are movably clamped inside the arc grooves. A sliding shaft (45) is movably clamped outside the positioning rods (42), and one end of the metal rod can be inserted inside the sliding shaft (45).

8. The anti-blocking silent centrifugal fan according to claim 7, characterized in that: A plurality of elastic insertion rods (44) are inserted on the surface of the wind guide plate (41), the elastic insertion rods (44) are rectangular, the elastic insertion rods (44) can be pressed against the surface of the wind guide plate (41) at the lower end to assist in stabilization, a docking groove is provided inside the elastic insertion rod (44), and an adsorption shaft can be clamped inside the docking groove.

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