High-efficiency cone yarn packaging equipment capable of reducing stockpiling

Abstract

The invention relates to the technical field of cone yarn packaging equipment, in particular to high-efficiency cone yarn packaging equipment capable of reducing stockpiling, which comprises a conveying belt, a packaging assembly is mounted on the conveying belt, the packaging assembly comprises a packaging frame, a plastic film roll is mounted in the packaging frame, and heat sealing frames are movably mounted on two sides in the packaging frame. The device comprises two sets of heat sealing frames, one sides of the two sets of heat sealing frames are fixedly connected with movable frames, one sides of the movable frames are movably installed on reciprocating lead screws, one sides of the two sets of heat sealing frames are fixedly provided with graphite blocks, and one sides of the heat sealing frames are connected with a frame. The cone yarns of different batches are adjusted and positioned in a self-adaptive mode, the cone yarns are kept in the fixed direction and position in the conveying process, and the situation that the cone yarns are prone to deviation or rolling in the conveying and transferring process, consequently, the cone yarns are pushed on a conveying belt, and the packaging efficiency of the cone yarns is affected is prevented.

Description

Technical Field

[0001] This invention relates to the field of yarn packaging equipment technology, specifically a high-efficiency yarn packaging equipment that can reduce material piling. Background Technology

[0002] This high-efficiency yarn package equipment, which reduces material accumulation, is an innovative device specifically designed for the yarn package process in the textile industry. It aims to improve packaging efficiency, reduce material accumulation costs, and optimize the entire production process. It is suitable for textile enterprises of all sizes, especially those that need to package large quantities of yarn packages, such as cotton mills and wool mills. The equipment can automatically complete the packaging of yarn packages, improving production efficiency and quality. At the same time, the equipment can also play an important role in logistics and warehousing, enabling rapid packaging and transportation of yarn packages. Currently, yarn packages need to be neatly arranged and stacked during the packaging process to reduce stacking space and improve packaging quality. However, yarn packages are prone to shifting or rolling during transportation and transfer, resulting in uneven arrangement, increased stacking volume, and reduced packaging efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a high-efficiency yarn packaging device that can reduce material accumulation. The spring is compressed and then rebounds, driving the moving plate to move inside the fixed plate. It adaptively adjusts and positions different batches of yarn, keeping the yarn in a fixed direction and position during the conveying process. This prevents the yarn from easily shifting or rolling during the conveying and transfer process, which would cause the yarn to be pushed on the conveyor belt and affect the packaging efficiency.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency yarn packaging device that can reduce material accumulation, comprising a conveyor belt, on which a packaging assembly is installed, the packaging assembly including a packaging frame, a plastic film roll installed inside the packaging frame, heat sealing frames movably installed on both sides inside the packaging frame, a movable frame fixedly connected to one side of each of the two sets of heat sealing frames, a movable frame movably installed on one side of the movable frame on a reciprocating screw, a graphite block fixedly installed on one side of each of the two sets of heat sealing frames, a frame connected to one side of the heat sealing frame, a blade fixedly installed on one side of the frame, and a row of nozzles connected to one side of the blade; An auxiliary component is installed on the conveyor belt. The auxiliary component includes a drying frame with drying pipes connected to both sides of the drying frame. A fan is installed on the drying frame, and airbags are connected to both sides of the fan. A movable plate is installed on one side of the airbag and is movably installed inside a fixed plate. The fixed plate is fixedly installed on both sides of the conveyor belt. A second conveying pipe is connected to one side of the airbag, and one end of the second conveying pipe is connected to the frame.

[0005] Preferably, one end of the reciprocating screw extends through the fixed frame of the conveyor belt and is installed on it, and a motor is fixedly installed on one end of the reciprocating screw. Two sets of movable sleeves are movably installed on the reciprocating screw, and one side of each set of movable sleeves is fixedly connected to one end of the movable frame.

[0006] Preferably, one end of each of the two sets of mobile frames extends through the packaging frame for installation, and one end of the mobile frame is fixedly installed on the heat sealing frame, with a hot air pipe connected to one side of the heat sealing frame.

[0007] Preferably, both sets of the air drying pipes are fixedly connected to the hot air pipe, and the connection between the hot air pipe and the heat sealing frame is provided with a telescopic pipe.

[0008] Preferably, both sides of the fan are connected to a first conveying pipe, and the connection between the first conveying pipe and the fan is also provided with a telescopic pipe, with one end of the first conveying pipe connected to the movable plate.

[0009] Preferably, a set of springs is fixedly connected inside the fixed plate, and a movable plate is fixedly connected to one end of each spring.

[0010] Preferably, one end of the second delivery pipe extends through the movable plate for installation, and a telescopic pipe is also installed at the connection between the second delivery pipe and the airbag.

[0011] Preferably, the pressure valve is provided with a pressure valve, the other end of the second conveying pipe is fixedly connected to the frame, and the connection between the second conveying pipe and the frame is also provided with a telescopic pipe.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the moving plates on both sides compress the springs inside the fixed plate, causing the springs to contract and then rebound, which in turn moves the moving plates inside the fixed plate. This adaptively adjusts and positions different batches of yarn packages, keeping the yarn packages in a fixed direction and position during the conveying process. This prevents the yarn packages from easily shifting or rolling during the conveying and transfer process, which could cause the yarn packages to be pushed on the conveyor belt and affect the packaging efficiency of the yarn packages. 2. In this invention, while hot air is being transferred from the hot air duct to the heat sealing frame, a portion of the hot air is also transferred through the drying duct to the inside of the drying frame. This allows the yarn package to be dried by the drying duct as it passes through the drying frame, preventing the yarn package from being not completely dry before sealing, or from being stored in a humid environment where the moisture inside the plastic film cannot be released in time, which would cause the yarn to become damp, grow mold, and affect the quality and service life of the yarn. 3. In this invention, while the fan is conveying the drying frame, it also conveys ambient air. The air and hot air are combined to cool the hot air. Then, the air is conveyed to the air bladder through the first conveying pipe. The air bladder expands to protect the yarn package and prevent the moving plate from applying too much force when clamping and positioning the yarn package, which would cause wear on the moving plate and compression of the yarn package, thus deforming the yarn package. Attached Figure Description

[0013] Figure 1 This is one of the overall structural schematic diagrams of the present invention; Figure 2 This is a second schematic diagram of the overall structure of the present invention; Figure 3 This is a cross-sectional view of the packaging component of the present invention; Figure 4 This is a schematic diagram of the heat-sealing frame structure connection of the present invention; Figure 5 This is a schematic diagram of the blade structure connection of the present invention; Figure 6 This is a schematic diagram of the auxiliary component structure of the present invention; Figure 7 This is a cross-sectional view of the auxiliary component of the present invention.

[0014] In the diagram: 1. Conveyor belt; 2. Packaging assembly; 201. Plastic film roll; 202. Motor; 203. Reciprocating screw; 204. Moving sleeve; 205. Moving frame; 206. Heat sealing frame; 207. Graphite block; 208. Hot air duct; 209. Frame; 210. Blade; 211. Nozzle; 212. Packaging frame; 3. Auxiliary components; 301. Drying frame; 302. Drying duct; 303. Fan; 304. First conveying pipe; 305. Fixing plate; 306. Spring; 307. Moving plate; 308. Airbag; 309. Second conveying pipe; 310. Pressure valve. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] See Figures 1 to 5As shown, the present invention provides a high-efficiency yarn packaging device that can reduce material piling, including a conveyor belt 1, a packaging component 2 installed on the conveyor belt 1, the packaging component 2 including a packaging frame 212, a plastic film roll 201 installed inside the packaging frame 212, heat sealing frames 206 movably installed on both sides inside the packaging frame 212, a movable frame 205 fixedly connected to one side of each of the two sets of heat sealing frames 206, a movable frame 205 movably installed on one side of the movable frame 205 on a reciprocating screw 203, a graphite block 207 fixedly installed on one side of each of the two sets of heat sealing frames 206, a frame 209 connected to one side of the heat sealing frame 206, a blade 210 fixedly installed on one side of the frame 209, and a row of nozzles 211 connected to one side of the blade 210; When the construction workers place the yarn bobbin on the conveyor belt 1 for transport, the conveyor belt 1 transports the yarn bobbin into the packing frame 212. The yarn bobbin passes through the plastic film roll 201, which wraps around the yarn bobbin. The yarn bobbin is then moved by the conveyor belt 1, carrying the plastic film, between the two sets of heat-sealing frames 206. Then, the motor 202 drives the reciprocating screw 203 to rotate. The reciprocating screw 203 drives the two sets of moving sleeves 204 to move relative to each other. This, in turn, drives the moving frame 205 to move. The moving frame 205 moves the two sets of heat-sealing frames 206 closer together, and the two sets of heat-sealing frames 206 move the graphite blocks 207 closer together, clamping the plastic film around the yarn bobbin. Both sets of heat sealing frames 206 are connected to hot air pipes 208. Hot air pipes 208 are connected to hot air blowers. Hot air blowers transmit hot air to hot air pipes 208, and hot air pipes 208 transmit hot air to heat sealing frames 206. The hot air is absorbed by graphite blocks 207, which heat up. Then, the two sets of heat sealing frames 206 drive the graphite blocks 207 to move closer to each other and clamp the plastic film around the yarn package. The heated graphite blocks 207 will heat seal the plastic film around the yarn package. At the same time, the heat sealing frames 206 drive the blades 210 to move through the frame 209 to cut the connected plastic film after heat sealing, so as to pack the yarn package evenly and quickly, reducing the packing efficiency of traditional manual packing. Because the graphite block 207 has a certain degree of air permeability, the internal air pressure of the heat sealing frame 206 can be kept stable, which will not affect the operation of the heat sealing frame 206. See Figures 6 to 7 As shown, an auxiliary component 3 is installed on the conveyor belt 1. The auxiliary component 3 includes a drying frame 301, with drying pipes 302 connected to both sides of the drying frame 301. A fan 303 is installed on the drying frame 301, and airbags 308 are connected to both sides of the fan 303. A movable plate 307 is installed on one side of the airbag 308. The movable plate 307 is movably installed inside the fixed plate 305. The fixed plate 305 is fixedly installed on both sides of the conveyor belt 1. A second conveying pipe 309 is connected to one side of the airbag 308. One end of the second conveying pipe 309 is connected to the frame 209. When the yarn package enters the conveyor belt 1, it squeezes the moving plates 307 on both sides. The moving plates 307 squeeze the springs 306 inside the fixed plate 305, causing the springs 306 to contract and then rebound, which drives the moving plates 307 to move inside the fixed plate 305. This adaptively adjusts and positions the yarn packages of different batches, keeping the yarn packages in a fixed direction and position during the conveying process. This prevents the yarn packages from easily shifting or rolling during the conveying and transfer process, which would cause the yarn packages to pile up on the conveyor belt 1 and affect the packaging efficiency of the yarn packages. Hot air is transferred from the hot air blower to the hot air pipe 208. While the hot air pipe 208 is transferring hot air to the heat sealing frame 206, a portion of the hot air is transferred through the air drying pipe 302 to the inside of the air drying frame 301. This allows the yarn package to be dried by the air drying pipe 302 as it passes through the air drying frame 301. This prevents the yarn package from not being completely dry before sealing, or from being stored in a humid environment where the moisture inside the plastic film cannot be dissipated in time, which would cause the yarn to become damp, grow mold, and affect the quality and service life of the yarn. While the drying pipe 302 transmits hot air into the drying frame 301, the fan 303 on the drying frame 301 starts. The fan 303 transmits some of the hot air out of the drying frame 301 to prevent the internal temperature of the drying frame 301 from becoming too high. This prevents the yarn from being damaged by high temperature when drying the yarn. While the fan 303 transmits air to the drying frame 301, it also transmits ambient air. The air combines with the hot air to cool it down. Then, it is transmitted to the airbag 308 through the first conveying pipe 304. The airbag 308 expands to protect the yarn and prevent the moving plate 307 from applying too much force when clamping and positioning the yarn, which could cause the moving plate 307 to wear and squeeze the yarn, thus deforming the yarn. When the airbag 308 is inflated, the pressure valve 310 automatically opens under pressure when the internal pressure of the airbag 308 reaches a certain value. The excess gas inside the airbag 308 is then transmitted through the second delivery pipe 309 to the inside of the frame 209. The gas inside the frame 209 is then sprayed onto the blade 210 through the nozzle 211 to cool the blade 210 and the heat-sealed plastic film. This prevents the blade 210 from cutting the heat-sealed plastic film and prevents the plastic film from sticking to the blade 210, which would affect the efficiency of the yarn package. The connection between the hot air duct 208 and the heat sealing frame 206 is equipped with a telescopic tube; the connection between the first conveying pipe 304 and the fan 303 is also equipped with a telescopic tube; the connection between the second conveying pipe 309 and the airbag 308 is also equipped with a telescopic tube; the connection between the second conveying pipe 309 and the frame 209 is also equipped with a telescopic tube. The telescopic rod is used to adjust their connection points to prevent the hot air duct 208, the first conveying pipe 304, and the second conveying pipe 309 from affecting the air transmission when they move. The hot air duct 208 and graphite block 207 transfer heat. The graphite block 207 heat-seals the plastic film around the yarn package. At the same time, a portion of the hot air from the hot air duct 208 is transferred to the drying frame 301 through the drying duct 302. The drying duct 302 dries the yarn package. The moving plate 307 moves inside the fixed plate 305 to adaptively adjust and position the yarn package. When the yarn package maintains a fixed direction and position during the conveying process, it is transferred to the airbag 308 through the first conveying pipe 304. The airbag 308 inflates to protect the yarn package. Excess gas inside the airbag 308 is transferred through the second conveying pipe 309 to cool the blade 210 and the heat-sealed plastic film.

[0017] In an optional embodiment, one end of the reciprocating screw 203 extends through the fixed frame of the conveyor belt 1 and is mounted on it. A motor 202 is fixedly mounted on one end of the reciprocating screw 203. Two sets of movable sleeves 204 are movably mounted on the reciprocating screw 203. One side of each set of movable sleeves 204 is fixedly connected to one end of the movable frame 205. The motor 202 drives the reciprocating screw 203 to rotate, and the reciprocating screw 203 drives the two sets of movable sleeves 204 to move relative to each other, so that the reciprocating screw 203 drives the movable frame 205 to move through the two sets of movable sleeves 204 respectively.

[0018] In an optional embodiment, one end of each of the two sets of movable frames 205 extends through the packaging frame 212 for installation, and one end of the movable frame 205 is fixedly installed on the heat sealing frame 206. A hot air pipe 208 is connected to one side of the heat sealing frame 206, and both sets of heat sealing frames 206 are connected to the hot air pipe 208. A hot air blower is connected to the hot air pipe 208, and the hot air blower transmits hot air to the hot air pipe 208, so that the hot air pipe 208 transmits hot air to the heat sealing frame 206.

[0019] In an optional embodiment, both sets of air drying pipes 302 are fixedly connected to the hot air pipe 208. A telescopic pipe is provided at the connection between the hot air pipe 208 and the heat sealing frame 206. The telescopic rod is used to adjust the connection between the hot air pipe 208 and the heat sealing frame 206 to prevent the hot air pipe 208 from moving and affecting the air transmission.

[0020] In an optional embodiment, the fan 303 is connected to both sides of the first conveying pipe 304. The connection between the first conveying pipe 304 and the fan 303 is also provided with a telescopic pipe. One end of the first conveying pipe 304 is connected to the movable plate 307. The telescopic rod is used to adjust the connection between the first conveying pipe 304 and the fan 303 to prevent the movement of the first conveying pipe 304 from affecting the wind power transmission.

[0021] In an optional embodiment, a set of springs 306 are fixedly connected inside the fixed plate 305. One end of the springs 306 is fixedly connected to a movable plate 307. The movable plate 307 compresses the springs 306 inside the fixed plate 305, causing the springs 306 to contract and then rebound, thereby driving the movable plate 307 to move inside the fixed plate 305 and adaptively adjust the positioning of different batches of yarn.

[0022] In an optional embodiment, one end of the second delivery pipe 309 extends through the movable plate 307 for installation, and a telescopic pipe is also installed at the connection between the second delivery pipe 309 and the airbag 308. The telescopic pipe is used to adjust the connection between the second delivery pipe 309 and the airbag 308 to prevent the movement of the second delivery pipe 309 from affecting the wind transmission.

[0023] In an optional embodiment, a pressure valve 310 is provided on the pressure valve 310, and the other end of the second delivery pipe 309 is fixedly connected to the frame 209. A telescopic pipe is also provided at the connection between the second delivery pipe 309 and the frame 209. When the airbag 308 is inflated, the pressure valve 310 is automatically opened under pressure when the internal pressure of the airbag 308 reaches a certain value, so that the excess gas inside the airbag 308 is transmitted through the second delivery pipe 309, and the gas is transmitted into the frame 209. The telescopic pipe is used at the connection between the second delivery pipe 309 and the frame 209.

[0024] Working principle: When the construction worker places the yarn bobbin on the conveyor belt 1 for transport, the conveyor belt 1 transports the yarn bobbin into the packing frame 212. The yarn bobbin passes through the plastic film roll 201, which wraps around the yarn bobbin. The yarn bobbin is then moved by the plastic film on the conveyor belt 1 between the two sets of heat sealing frames 206. Then, the motor 202 drives the reciprocating screw 203 to rotate, which in turn drives the two sets of moving sleeves 204 to move relative to each other. This, in turn, drives the moving frame 205 to move. The moving frame 205 moves the two sets of heat sealing frames 206 closer together, and the two sets of heat sealing frames 206 move the graphite blocks 207 closer together, clamping the plastic film around the yarn bobbin. Since both sets of heat sealing frames 206 are connected to hot air pipes 208, and hot air fans are connected to the hot air pipes 208, the hot air fans transmit hot air to the hot air pipes 208, and the hot air pipes 208 transmit hot air to the heat sealing frames 206. The hot air is absorbed by the graphite blocks 207, and the graphite blocks 207 heat up. Then, the two sets of heat sealing frames 206 drive the graphite blocks 207 to move closer to each other and clamp the plastic film around the yarn package. The heated graphite blocks 207 will heat seal the plastic film around the yarn package. At the same time, the heat sealing frames 206 drive the blades 210 to move through the frame 209 to cut the connected plastic film after heat sealing, so that the yarn package is evenly and quickly packaged, reducing the packaging efficiency of traditional manual packaging. When the yarn package enters the conveyor belt 1, it squeezes the moving plates 307 on both sides. The moving plates 307 squeeze the springs 306 inside the fixed plate 305, causing the springs 306 to contract and then rebound, which drives the moving plates 307 to move inside the fixed plate 305. This adaptively adjusts and positions the yarn packages of different batches, keeping the yarn packages in a fixed direction and position during the conveying process. This prevents the yarn packages from easily shifting or rolling during the conveying and transfer process, which would cause the yarn packages to pile up on the conveyor belt 1 and affect the packaging efficiency of the yarn packages. Hot air is transferred from the hot air blower to the hot air pipe 208. While the hot air pipe 208 is transferring hot air to the heat sealing frame 206, a portion of the hot air is transferred through the air drying pipe 302 to the inside of the air drying frame 301. This allows the yarn package to be dried by the air drying pipe 302 as it passes through the air drying frame 301. This prevents the yarn package from not being completely dry before sealing, or from being stored in a humid environment where the moisture inside the plastic film cannot be dissipated in time, which would cause the yarn to become damp, grow mold, and affect the quality and service life of the yarn. While the drying pipe 302 transmits hot air into the drying frame 301, the fan 303 on the drying frame 301 starts. The fan 303 transmits some of the hot air out of the drying frame 301 to prevent the internal temperature of the drying frame 301 from becoming too high. This prevents the yarn from being damaged by high temperature when drying the yarn. While the fan 303 transmits air to the drying frame 301, it also transmits ambient air. The air combines with the hot air to cool it down. Then, it is transmitted to the airbag 308 through the first conveying pipe 304. The airbag 308 expands to protect the yarn and prevent the moving plate 307 from applying too much force when clamping and positioning the yarn, which could cause the moving plate 307 to wear and squeeze the yarn, thus deforming the yarn. When the airbag 308 is inflated, the pressure valve 310 automatically opens under pressure when the internal pressure of the airbag 308 reaches a certain value. The excess gas inside the airbag 308 is then transmitted through the second delivery pipe 309 to the inside of the frame 209. The gas inside the frame 209 is then sprayed onto the blade 210 through the nozzle 211 to cool the blade 210 and the heat-sealed plastic film. This prevents the blade 210 from cutting the heat-sealed plastic film and prevents the plastic film from sticking to the blade 210, which would affect the efficiency of the yarn package.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency yarn packaging device that reduces material accumulation, comprising a conveyor belt (1), characterized in that, A packaging assembly (2) is installed on the conveyor belt (1). The packaging assembly (2) includes a packaging frame (212). A plastic film roll (201) is installed inside the packaging frame (212). Heat sealing frames (206) are movably installed on both sides inside the packaging frame (212). A movable frame (205) is fixedly connected to one side of each of the two sets of heat sealing frames (206). A reciprocating screw (203) is slidably installed on one side of the movable frame (205). A graphite block (207) is fixedly installed on one side of each of the two sets of heat sealing frames (206). A frame (209) is connected to one side of the heat sealing frame (206). A blade (210) is fixedly installed on one side of the frame (209). A row of nozzles (211) is connected to one side of the blade (210). An auxiliary component (3) is installed on the conveyor belt (1). The auxiliary component (3) includes a drying frame (301). Drying pipes (302) are connected to both sides of the drying frame (301). A fan (303) is installed on the drying frame (301). Airbags (308) are connected to both sides of the fan (303). A movable plate (307) is installed on one side of the airbag (308). The movable plate (307) is movably installed inside a fixed plate (305). The fixed plate (305) is fixedly installed on both sides of the conveyor belt (1). A second conveying pipe (309) is connected to one side of the airbag (308). One end of the second conveying pipe (309) is connected to the frame (209).

2. The high-efficiency yarn packaging equipment that reduces material accumulation according to claim 1, characterized in that, One end of the reciprocating screw (203) extends through the fixed frame of the conveyor belt (1) and is installed on it. A motor (202) is fixedly installed on one end of the reciprocating screw (203). Two sets of movable sleeves (204) are movably installed on the reciprocating screw (203). One side of each set of movable sleeves (204) is fixedly connected to one end of the movable frame (205).

3. The high-efficiency yarn packaging equipment that reduces material accumulation according to claim 1, characterized in that, Both sets of mobile frames (205) extend through the packaging frame (212) at one end and are installed thereon. One end of the mobile frame (205) is fixedly installed on the heat sealing frame (206). A hot air pipe (208) is connected to one side of the heat sealing frame (206).

4. The high-efficiency yarn packaging equipment that reduces material accumulation according to claim 3, characterized in that, Both sets of air drying pipes (302) are fixedly connected to the hot air pipe (208), and the connection between the hot air pipe (208) and the heat sealing frame (206) is provided with a telescopic pipe.

5. The high-efficiency yarn packaging equipment that reduces material accumulation according to claim 1, characterized in that, Both sides of the fan (303) are connected to a first conveying pipe (304). The connection between the first conveying pipe (304) and the fan (303) is also provided with a telescopic pipe. One end of the first conveying pipe (304) is connected to the moving plate (307).

6. The high-efficiency yarn packaging equipment that reduces material accumulation according to claim 5, characterized in that, A set of springs (306) is fixedly connected inside the fixed plate (305), and a movable plate (307) is fixedly connected to one end of the springs (306).

7. The high-efficiency yarn packaging equipment that reduces material accumulation according to claim 1, characterized in that, One end of the second delivery pipe (309) extends through the movable plate (307) and is installed thereon, and the connection between the second delivery pipe (309) and the airbag (308) is also equipped with a telescopic pipe.

8. The high-efficiency yarn packaging equipment that reduces material accumulation according to claim 1, characterized in that, The pressure valve (310) is provided with a pressure valve (310), and the other end of the second conveying pipe (309) is fixedly connected to the frame (209). The connection between the second conveying pipe (309) and the frame (209) is also provided with a telescopic pipe.

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