Raw material lifting device for water-soluble fertilizer processing

Abstract

The invention belongs to the technical field of lifting and conveying, in particular to a raw material lifting device for water-soluble fertilizer processing, and provides the following scheme that the raw material lifting device specifically comprises a return pipe, a conveying pipe and a production tank, and a front driving mechanism and a rear driving mechanism are mounted at the two ends of the return pipe respectively; a raw material feeding mechanism and a raw material discharging mechanism are installed at the two ends of the conveying pipe correspondingly, and the raw material feeding mechanism is installed between the front driving mechanism and the conveying pipe. The phenomena that raw material particles are extruded and hardened and a pipeline is blocked are avoided, the stability and safety in the raw material lifting and feeding process are improved, when raw materials enter the raw material discharging mechanism, the raw materials fall into the dispersing mechanism from the position between two feeding chain pieces, umbrella-shaped centrifugal movement is carried out under the action of the dispersing mechanism, and the raw materials are dispersed in the dispersing mechanism. And secondary dispersion is performed in the buffer mechanism, so that local accumulation of the raw materials in the production tank is avoided, and the mixing and reaction efficiency of the water-soluble fertilizer is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting transportation, and in particular to a raw material lifting device for water-soluble fertilizer processing. Background Art

[0002] Water-soluble fertilizers are a type of multi-component compound fertilizer that can completely dissolve in water. They can quickly dissolve in water, are more easily absorbed by crops, and have a relatively high absorption and utilization rate. More importantly, they can be applied to facility agriculture such as drip irrigation and sprinkler irrigation to achieve the integration of water and fertilizer, achieving the effects of water saving, fertilizer saving, and labor saving. Water-soluble fertilizers allow growers to quickly see the effects and performance of fertilizers and can adjust the fertilizer formula at any time according to the different growth trends of crops. Of course, the application method of water-soluble fertilizers is very simple. It can be fertilized during irrigation with irrigation water including sprinkler irrigation and drip irrigation, saving both water and fertilizer, as well as labor. The benefits of using water-soluble fertilizers are obvious today when labor costs are rising.

[0003] There are two main categories of raw materials for water-soluble fertilizers: inorganic water-soluble fertilizer raw materials and organic water-soluble fertilizer raw materials. Many raw materials in inorganic water-soluble fertilizers are irritating and dangerous, such as nitrophosphate, diammonium hydrogen phosphate, potassium nitrate, etc. Moreover, these raw materials are prone to moisture absorption and caking. During the production process of inorganic water-soluble fertilizers, it is often necessary to lift the raw materials into reaction kettles and mixing tanks. There are many existing lifting devices that rely on air transportation or use propeller blades for screw transportation. Air transportation will generate a lot of waste gas, while screw transportation is prone to squeezing and compacting the raw materials, which is not conducive to the dispersion operation of the raw materials.

[0004] In view of this, the present invention provides a raw material lifting device for water-soluble fertilizer processing to solve the technical problems existing in the above-mentioned prior art. Summary of the Invention

[0005] Based on the technical problems existing in the background art, the present invention proposes a raw material lifting device for water-soluble fertilizer processing.

[0006] The raw material lifting device for water-soluble fertilizer processing proposed by the present invention includes a reflux pipe, a conveying pipe, and a production tank. Front driving mechanisms and rear driving mechanisms are respectively installed at both ends of the reflux pipe. Raw material feeding mechanisms and raw material discharging mechanisms are respectively installed at both ends of the conveying pipe. The raw material feeding mechanism is installed between the front driving mechanism and the conveying pipe. The raw material discharging mechanism is installed between the conveying pipe and the rear driving mechanism. A conveying chain is arranged inside the front driving mechanism, the raw material feeding mechanism, the conveying pipe, the raw material discharging mechanism, the rear driving mechanism, and the reflux pipe, and a plurality of feeding chain plates are installed in the middle of the conveying chain. A storage tank is installed at the top of the raw material feeding mechanism. A dispersion mechanism is installed at the bottom of the raw material discharging mechanism, and a buffer mechanism is installed on the dispersion mechanism. The buffer mechanism is installed at the top position of the production tank.

[0007] Preferably in the present invention, the front drive mechanism and the rear drive mechanism both include a drive housing, and a drive wheel rotatably installed inside the drive housing, a stepper motor transmission-connected to the drive wheel is installed on the top of the drive housing, and a plurality of transmission teeth for pushing the conveyor chain and the feed chain are arranged on the outer side of the drive wheel.

[0008] Preferably in the present invention, a guide bracket with an arc-shaped structure is installed inside the driving shell, and the inner side of the guide bracket is provided with an arc-shaped groove that slides with the feeding chain, the top of the arc-shaped groove is provided with a plurality of elastic protrusions, and the bottom wall of the driving shell is provided with a grid mesh plate.

[0009] Preferably in the present invention, the raw material feeding mechanism comprises a batching shell, and a C-shaped batching cavity adapted to the feeding chain is provided at the bottom of the batching shell, and a control component cooperating with a discharge port of the storage tank is installed in the middle of the batching shell.

[0010] Preferably in the present invention, the control component includes two groups of swing rods rotatably installed on both sides of the ingredient shell, and the two groups of swing rods are staggered in an X shape, and the middle parts of the two groups of swing rods are provided with guide grooves, and lifting rods are interspersed between the guide grooves, and two material control electric push rods connecting the two ends of the lifting rods are installed on the top of the ingredient shell.

[0011] Preferably in the present invention, the raw material unloading mechanism comprises a unloading barrel, a plurality of arc-shaped guide rods distributed in a ring shape are arranged in the middle of the unloading barrel, and the feeding chain plates are interspersed between the plurality of arc-shaped guide rods.

[0012] Preferably in the present invention, a rectangular groove is provided on the top of the discharge barrel, and a movable block driven by an electric guide rail is installed inside the rectangular groove, and a blowing pipe arranged obliquely is installed in the middle of the movable block.

[0013] Preferably in the present invention, the dispersion mechanism includes a dispersion cover with a trumpet-shaped structure, and a support frame installed at the bottom of the dispersion cover, a dispersion part with a conical structure is provided in the middle of the support frame, a dispersion motor is installed in the middle of the dispersion part, and a plurality of elastic rods are installed on the outer side of the output shaft of the dispersion motor.

[0014] Preferably in the present invention, the buffer mechanism comprises a support ring, a spoiler bracket with an umbrella-like structure is installed inside the support ring, push rod motors are installed on both sides of the support ring, and a telescopic component is installed between the bottoms of the two push rod motors.

[0015] Preferably in the present invention, the telescopic assembly comprises an elastic hose and a telescopic short tube, the elastic hose is installed between the support ring and the telescopic short tube, and a plurality of elastic plates with fan-shaped structures are hinged inside the telescopic short tube through a torsion spring shaft.

[0016] Compared with the prior art, the present invention provides a raw material lifting device for water-soluble fertilizer processing, which has the following beneficial effects:

[0017] In the present invention, the water-soluble fertilizer raw material particles are pushed in the moving direction by the feeding chain plates in the conveying pipe and then moved and conveyed. Moreover, the raw materials are hermetically lifted and conveyed between the raw material feeding mechanism, the conveying pipe, and the raw material discharging mechanism, effectively avoiding the leakage of raw material dust and also preventing the moisture in the environment from contacting the raw materials and causing the phenomenon of moisture absorption. At the same time, the raw materials are stored in the storage tank, and the raw material feeding mechanism is relied on to quantitatively disperse the raw materials to the bottom, thereby controlling the accumulation amount of the raw materials between the two feeding chain plates, reducing the extrusion force between the raw material particles, avoiding the phenomena of extrusion caking and pipeline blockage of the raw material particles, and improving the stability and safety in the process of raw material lifting and feeding. When the raw materials enter the raw material discharging mechanism, they fall between the two feeding chain plates into the dispersing mechanism, and under the action of the dispersing mechanism, they perform umbrella-shaped centrifugal motion and are secondarily dispersed in the buffering mechanism, avoiding the local accumulation of raw materials inside the production tank, and thus accelerating the efficiency of water-soluble fertilizer mixing and reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a raw material lifting device for water-soluble fertilizer processing proposed by the present invention;

[0019] Figure 2 is a schematic side view structural diagram of a raw material lifting device for water-soluble fertilizer processing proposed by the present invention;

[0020] Figure 3 is a schematic partial structural diagram of a raw material lifting device for water-soluble fertilizer processing proposed by the present invention;

[0021] Figure 4 is a schematic structural diagram of the driving mechanism of a raw material lifting device for water-soluble fertilizer processing proposed by the present invention;

[0022] Figure 5 is a schematic distribution structural diagram of the raw material feeding mechanism of a raw material lifting device for water-soluble fertilizer processing proposed by the present invention;

[0023] Figure 6 is a schematic structural diagram of the raw material feeding mechanism of a raw material lifting device for water-soluble fertilizer processing proposed by the present invention;

[0024] Figure 7 is a schematic structural diagram of the raw material discharging mechanism of a raw material lifting device for water-soluble fertilizer processing proposed by the present invention;

[0025] Figure 8 is a schematic structural diagram of the dispersing mechanism of a raw material lifting device for water-soluble fertilizer processing proposed by the present invention;

[0026] Figure 9 This is a schematic structural diagram of a buffer mechanism for a raw material lifting device used in water-soluble fertilizer processing proposed by the present invention.

[0027] In the figure: 1 reflux pipe, 2 conveying pipe, 3 raw material feeding mechanism, 31 feeding cylinder body, 32 arc guide rod, 33 movable block, 34 blowing pipe, 4 rear driving mechanism, 5 dispersion mechanism, 51 dispersion cover, 52 support frame, 53 elastic rod, 6 buffer mechanism, 61 support ring, 62 telescopic short pipe, 63 elastic hose, 64 push rod motor, 65 turbulence support bracket, 66 elastic plate, 7 production tank, 8 raw material feeding mechanism, 81 batching housing, 82 C-shaped batching cavity, 83 swing rod, 84 guide chute, 85 lifting rod, 86 material control electric push rod, 9 front driving mechanism, 10 storage tank, 11 conveying chain, 12 feeding chain plates, 13 driving housing, 14 guiding support, 15 stepping motor, 16 transmission teeth, 17 driving wheel. Specific embodiments

[0028] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0029] Referring to Figures 1-9 , a raw material lifting device for water-soluble fertilizer processing includes a reflux pipe 1, a conveying pipe 2 and a production tank 7. A front driving mechanism 9 and a rear driving mechanism 4 are respectively installed at both ends of the reflux pipe 1. A raw material feeding mechanism 8 and a raw material feeding mechanism 3 are respectively installed at both ends of the conveying pipe 2. The raw material feeding mechanism 8 is installed between the front driving mechanism 9 and the conveying pipe 2. The raw material feeding mechanism 3 is installed between the conveying pipe 2 and the rear driving mechanism 4. A conveying chain 11 is arranged inside the front driving mechanism 9, the raw material feeding mechanism 8, the conveying pipe 2, the raw material feeding mechanism 3, the rear driving mechanism 4 and the reflux pipe 1, and a plurality of feeding chain plates 12 are installed in the middle of the conveying chain 11. A storage tank 10 is installed at the top of the raw material feeding mechanism 8. A dispersion mechanism 5 is installed at the bottom of the raw material feeding mechanism 3, and a buffer mechanism 6 is installed on the dispersion mechanism 5. The buffer mechanism 6 is installed at the top of the production tank 7.

[0030] In the present invention, the water-soluble fertilizer raw material particles are pushed in the direction of movement by the feeding chain 12 in the conveying pipe 2 and then moved and conveyed, and are lifted and conveyed in a closed manner between the raw material feeding mechanism 8, the conveying pipe 2, and the raw material unloading mechanism 3, effectively avoiding the leakage of raw material dust, and also avoiding the phenomenon of moisture reversion caused by the contact between water vapor in the environment and the raw material. At the same time, the raw material is stored in the storage tank 10, and the raw material feeding mechanism 8 is relied on to quantitatively disperse the raw material to the bottom, thereby controlling the raw material accumulation amount between the two feeding chain pieces 12, reducing the extrusion force between the raw material particles, avoiding the phenomenon of extrusion and compaction of the raw material particles and clogging the pipeline, and improving the stability and safety of the raw material lifting and loading process. When the raw material enters the raw material unloading mechanism 3, it falls into the dispersion mechanism 5 between the two feeding chain pieces 12, performs umbrella-shaped centrifugal motion under the action of the dispersion mechanism 5, and performs secondary dispersion in the buffer mechanism 6, thereby avoiding the local accumulation of the raw material inside the production tank 7, thereby accelerating the efficiency of water-soluble fertilizer mixing and reaction.

[0031] As a further solution in the present invention, the front drive mechanism 9 and the rear drive mechanism 4 both include a drive housing 13, and a drive wheel 17 rotatably installed inside the drive housing 13. A stepper motor 15 connected to the drive wheel 17 is installed on the top of the drive housing 13. A plurality of transmission teeth 16 for pushing the conveyor chain 11 and the feed chain 12 are arranged on the outer side of the drive wheel 17. In the present invention, the conveyor chain 11 and the feed chain 12 are pushed to circulate inside the return pipe 1 and the conveying pipe 2 by the rotating drive wheel 17 and the transmission teeth 16, so as to achieve the purpose of lifting and conveying the raw materials.

[0032] As a further solution in the present invention, a guide bracket 14 with an arc-shaped structure is installed inside the driving shell 13, and the inner side of the guide bracket 14 is provided with an arc-shaped groove that slides with the feeding chain 12, and the top of the arc-shaped groove is provided with multiple elastic protrusions, and the bottom wall of the driving shell 13 is provided with a grid mesh plate. In the present invention, when the feeding chain 12 enters the driving shell 13 for steering drive, the top of the feeding chain 12 contacts the elastic protrusion to form vibration, and drives the feeding chain 12 to tilt, and cleans the feeding chain 12 and the conveying chain 11 connected at both ends to avoid the mixed raw material particles from affecting the transmission effect, thereby improving the stability of raw material feeding.

[0033] As a further solution in the present invention, the raw material feeding mechanism 8 includes a batching housing 81, and a C-shaped batching cavity 82 adapted to the feeding chain plates 12 is provided at the bottom of the batching housing 81. A control component adapted to the discharge opening of the storage tank 10 is installed in the middle of the batching housing 81. In the present invention, through the movement of the control component at the discharge opening of the storage tank 10, the raw materials in the storage tank 10 are guided into the C-shaped batching cavity 82 in batches, and the feeding speed of the raw materials is controlled, so as to control the accumulation amount of the raw materials between the two feeding chain plates 12, avoid the blockage phenomenon caused by the accumulation of raw materials in the conveying pipe 2, and improve the stability of raw material conveying.

[0034] As a further solution in the present invention, the control component includes two swing rods 83 rotatably installed on both sides inside the batching housing 81, and the two swing rods 83 are distributed in an X-shaped staggered manner. Guide chutes 84 are provided in the middle of the two swing rods 83, and a lifting pull rod 85 is inserted between the guide chutes 84. Two control material electric push rods 86 connecting the two ends of the lifting pull rod 85 are installed on the top of the batching housing 81. In the present invention, when the two swing rods 83 are horizontal, the swing rods 83 block the discharge opening of the storage tank 10. When the lifting pull rod 85 drives the middle of the swing rods 83 to move downward, the two swing rods 83 form an X-shaped staggered structure, and the raw material particles fall from the gaps between the swing rods 83 and slide along the surfaces of the swing rods 83 from both sides of the C-shaped batching cavity 82, so as to evenly spread the raw material particles in the C-shaped batching cavity 82, and then control the raw material conveying amounts between the feeding chain plates 12 to be consistent.

[0035] As a further solution in the present invention, the raw material discharging mechanism 3 includes a discharging cylinder body 31, and a plurality of arc-shaped guide rods 32 distributed in a ring are provided in the middle of the discharging cylinder body 31. The feeding chain plates 12 are inserted between the plurality of arc-shaped guide rods 32. In the present invention, the feeding chain plates 12 push the raw material particles into the discharging cylinder body 31, and the raw material particles fall into the dispersing mechanism 5 from the gaps between the arc-shaped guide rods 32 to complete the discharging operation of the raw material particles.

[0036] As a further solution in the present invention, a rectangular groove is provided at the top of the discharging cylinder body 31, and a movable block 33 driven by an electric guide rail is installed inside the rectangular groove. An inclined blowing pipe 34 is installed in the middle of the movable block 33. In the present invention, during the lifting and conveying of the raw materials, air is blown in the discharging cylinder body 31 through the blowing pipe 34, and the movable block 33 drives the blowing pipe 34 to swing left and right, so as to blow off the raw material particles on the surface of the feeding chain plates 12 by the blowing pipe 34 to accelerate the raw material discharging speed. At the same time, an air seal is formed between the raw material discharging mechanism 3, the dispersing mechanism 5 and the buffer mechanism 6 by the air flow to avoid the upward flow of the gas in the production tank 7 from polluting the conveying environment.

[0037] As a further solution in the present invention, the dispersion mechanism 5 includes a dispersion cover 51 in a horn shape structure, and a support frame 52 installed at the bottom of the dispersion cover 51. A dispersion part in a conical structure is arranged in the middle of the support frame 52, and a dispersion motor is installed in the middle of the dispersion part. A plurality of elastic rods 53 are installed on the outer side of the output shaft of the dispersion motor. In the present invention, when raw material particles enter the dispersion cover 51, the elastic rods 53 in rotational motion perform centrifugal dispersion operation on the raw material particles to avoid the aggregation and feeding of the raw material particles.

[0038] As a further solution in the present invention, the buffer mechanism 6 includes a support ring 61. Inside the support ring 61, a spoiler support 65 distributed in an umbrella rib shape structure is installed. Pusher motors 64 are installed at both sides of the support ring 61, and a telescopic assembly is installed between the bottoms of the two pusher motors 64. In the present invention, the dispersed raw material particles enter the buffer mechanism 6 and, under the influence of the spoiler support 65 and the telescopic assembly, the raw material particles are dispersed in a ring shape and enter the production tank 7.

[0039] As a further solution in the present invention, the telescopic assembly includes an elastic hose 63 and a telescopic short pipe 62. The elastic hose 63 is installed between the support ring 61 and the telescopic short pipe 62. Inside the telescopic short pipe 62, a plurality of elastic plates 66 in a fan shape structure are hinged through a torsion spring rotating shaft. In the present invention, the telescopic short pipe 62 is inserted into the production tank 7. When feeding raw materials, the pusher motor 64 drives the telescopic short pipe 62 to move upward, and the bottom of the spoiler support 65 is used to squeeze the connection part of the elastic plates 66, so that the elastic plates 66 rotate downward and the pipe orifice position of the telescopic short pipe 62 is opened. After the raw material feeding is completed, the telescopic short pipe 62 moves downward, and the elastic plates 66 are reset horizontally under the action of the torsion spring rotating shaft, so as to prevent the materials inside the production tank 7 from entering the lifting device and causing pollution.

[0040] During use, the water-soluble fertilizer raw material particles are pushed by the feeding chain plates 12 in the moving direction in the conveying pipe 2 and then move for conveying. The raw materials are stored in the storage tank 10. Relying on the raw material feeding mechanism 8, the raw materials are quantitatively dispersed to the bottom, so as to control the raw material accumulation amount between the two feeding chain plates 12, reduce the extrusion force between the raw material particles, avoid the phenomena of extrusion caking and pipeline blockage of the raw material particles, and improve the stability and safety during the raw material lifting and feeding process. When the raw materials enter the raw material feeding mechanism 3, they fall between the two feeding chain plates 12 into the dispersion mechanism 5, perform umbrella-shaped centrifugal motion under the action of the dispersion mechanism 5, and are secondarily dispersed in the buffer mechanism 6 to avoid local accumulation of the raw materials inside the production tank 7.

[0041] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention should cover within the protection scope of the present invention any equivalent substitution or change made according to the technical solution and inventive concept of the present invention.

Claims

1. An apparatus for lifting raw materials used in the processing of water-soluble fertilizers, comprising a reflux pipe (1), a conveying pipe (2), and a production tank (7), characterized in that, A front drive mechanism (9) and a rear drive mechanism (4) are respectively installed at both ends of the return pipe (1); a raw material feeding mechanism (8) and a raw material unloading mechanism (3) are respectively installed at both ends of the conveying pipe (2); the raw material feeding mechanism (8) is installed between the front drive mechanism (9) and the conveying pipe (2); the raw material unloading mechanism (3) is installed between the conveying pipe (2) and the rear drive mechanism (4); a conveying chain (11) is arranged inside the front drive mechanism (9), the raw material feeding mechanism (8), the conveying pipe (2), the raw material unloading mechanism (3), the rear drive mechanism (4) and the return pipe (1); a plurality of feeding chain plates (12) are installed in the middle of the conveying chain (11); a storage tank (10) is installed on the top of the raw material feeding mechanism (8); a dispersion mechanism (5) is installed on the bottom of the raw material unloading mechanism (3); a buffer mechanism (6) is installed on the dispersion mechanism (5); and the buffer mechanism (6) is installed at the top of the production tank (7).

2. The raw material lifting device for water-soluble fertilizer processing according to claim 1, wherein, The front drive mechanism (9) and the rear drive mechanism (4) both comprise a drive housing (13) and a drive wheel (17) rotatably mounted inside the drive housing (13); a stepper motor (15) drivingly connected to the drive wheel (17) is mounted on the top of the drive housing (13); and a plurality of transmission teeth (16) for driving a conveying chain (11) and a feeding chain sheet (12) are arranged on the outer side of the drive wheel (17).

3. The raw material lifting device for water-soluble fertilizer processing according to claim 2, characterized in that, A guide bracket (14) with an arc structure is installed inside the driving housing (13), and the inner side surface of the guide bracket (14) is provided with an arc groove that slidably cooperates with the feeding chain plate (12), and the top of the arc groove is provided with a plurality of elastic protrusions, and the bottom wall of the driving housing (13) is provided with a grid mesh plate.

4. The raw material lifting device for water-soluble fertilizer processing according to claim 1, characterized in that, The raw material feeding mechanism (8) comprises a batching shell (81), and a C-shaped batching cavity (82) adapted to the feeding chain (12) is arranged at the bottom of the batching shell (81), and a control component matched with a discharge port of a storage tank (10) is installed in the middle of the batching shell (81).

5. The raw material lifting device for water-soluble fertilizer processing according to claim 4, characterized in that, The control assembly comprises two groups of swing rods (83) rotatably mounted on both sides of the inside of the batching shell (81), and the two groups of swing rods (83) are staggered in an X shape, and the middle parts of the two groups of swing rods (83) are provided with guide grooves (84), and lifting rods (85) are inserted between the guide grooves (84), and two material control electric push rods (86) connected to the two ends of the lifting rods (85) are installed on the top of the batching shell (81).

6. The raw material lifting device for water-soluble fertilizer processing according to claim 1, characterized in that, The raw material unloading mechanism (3) comprises a unloading barrel (31), a plurality of arc-shaped guide rods (32) distributed in a ring shape are arranged in the middle of the unloading barrel (31), and the feeding chain pieces (12) are inserted between the plurality of arc-shaped guide rods (32).

7. The raw material lifting device for water-soluble fertilizer processing according to claim 6, characterized in that, A rectangular groove is arranged on the top of the unloading barrel (31), and a movable block (33) driven by an electric guide rail is installed inside the rectangular groove. A blowing pipe (34) arranged obliquely is installed in the middle of the movable block (33).

8. The raw material lifting device for water-soluble fertilizer processing according to claim 1, characterized in that, The dispersion mechanism (5) includes a dispersion cover (51) in the shape of a horn, and a support frame (52) installed at the bottom of the dispersion cover (51). A dispersion part in the shape of a cone is provided in the middle of the support frame (52), and a dispersion motor is installed in the middle of the dispersion part. A plurality of elastic rods (53) are installed on the outer side of the output shaft of the dispersion motor.

9. The raw material lifting device for water-soluble fertilizer processing according to claim 8, characterized in that, The buffer mechanism (6) includes a support ring (61). A spoiler support (65) distributed in the shape of umbrella ribs is installed inside the support ring (61). Push rod motors (64) are installed at both sides of the support ring (61), and a telescopic assembly is installed between the bottoms of the two push rod motors (64).

10. The raw material lifting device for water-soluble fertilizer processing according to claim 9, characterized in that, The telescopic assembly includes an elastic hose (63) and a telescopic short tube (62). The elastic hose (63) is installed between the support ring (61) and the telescopic short tube (62). A plurality of elastic plates (66) in the shape of sectors are hinged inside the telescopic short tube (62) through torsion spring rotating shafts.

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