A nozzle structure and a feeding device using the same

Abstract

The application provides a nozzle structure and a feeding device using the nozzle structure. The nozzle structure comprises a jet head, a support pipe, a material blocking piece and a spring. The jet head is installed at one end of the support pipe, and the outer wall of the spherical jet head is provided with a plurality of jet holes. The support pipe is provided with an air inlet pipe and a material inlet pipe, and the other side of the support pipe is provided with a material outlet pipe corresponding to the material inlet pipe. The plunger of the material blocking piece is provided with a material passing hole, and the plunger is slidingly arranged in the support pipe. The spring pushes the plunger to realize the conduction of the material passing hole corresponding to the material inlet pipe and the material outlet pipe. The plunger is provided with an air channel on the side of the material passing hole away from the jet head. The air supplied to the inside of the support pipe through the air inlet pipe can make the plunger move to the inside of the jet head, realize the plugging and shielding of the material inlet pipe and the material outlet pipe, and make the air channel connected with the inside of the jet head. The nozzle structure can be assembled into a feeding device together with a material tank, a cover plate, a gas conveying pipe and a material conveying pipe, so as to meet the feeding requirement and realize the blowing cleaning without opening the cover, and the working efficiency can be improved.

Description

Technical Field

[0001] This invention relates to the field of feeding devices, and more specifically, to a nozzle structure and a feeding device using this nozzle structure. Background Technology

[0002] The base material is one of the factors that determines the appearance of the finished sealant. The base material of silane-modified polyether sealant is composed of terminal alkyl polyether, plasticizer, and filler. Its traditional manufacturing process is to first mix the plasticizer and filler in a power mixer, remove low-boiling substances by high temperature heating, and then add the resin in one go after cooling to obtain the finished product. However, when using a power mixer for mixing, some of the added fumed silica always remains on the inner wall of the lid. For this type of powder, one approach is to leave it untreated, ignoring the powder adhering to the lid; another approach is to clean it by opening the lid and sweeping. However, both methods have significant drawbacks. The former causes powder to fall into the adhesive during the raising of the mixing paddle or opening the lid, resulting in particulate matter and affecting the quality of the finished product; the latter requires manual cleaning and re-vacuuming, making operation cumbersome and impacting production efficiency. Therefore, improvements are needed. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the technical problem to be solved by the present invention is to propose a nozzle structure and a feeding device using the nozzle structure. The structure is novel, which can meet the feeding requirements and perform spray cleaning, and does not require opening the cover, thus improving work efficiency.

[0004] To achieve this objective, the present invention adopts the following technical solution: This invention provides a nozzle structure, including a jet nozzle, a support tube, a baffle, and a spring. The jet nozzle is installed at one end of the support tube and has a spherical shape. The outer wall of the jet nozzle has multiple jet holes. An air inlet pipe and a feed pipe are connected to the side wall of the support tube. The air inlet pipe is located at the end of the feed pipe away from the jet nozzle, and a discharge pipe is connected to the other side of the support tube corresponding to the feed pipe. The baffle includes a plunger and a guide rod. The plunger has a material passage hole and is slidably disposed inside the support tube. The spring is sleeved on the outside of the guide rod and pushes the plunger, so that the material passage hole is connected to the feed pipe and the discharge pipe. An air passage is provided on the side of the plunger away from the jet nozzle at the material passage hole. Air is supplied to the inside of the support tube through the air inlet pipe, which can move the plunger into the jet nozzle, blocking the feed pipe and the discharge pipe, and connecting the air passage with the inside of the jet nozzle.

[0005] In a preferred embodiment of the present invention, the jet head includes a first hemisphere and a second hemisphere, which are arranged opposite to each other and fixedly connected by bolts. Both the first and second hemispheres are provided with multiple jet holes. A third through hole is provided at the center of the first hemisphere, the diameter of which is adapted to the diameter of the plunger. A connecting pipe is provided on the outer side of the port of the third through hole, the inner diameter of which is adapted to the outer diameter of the support pipe and is threadedly connected. A guide hole is provided at the center of the second hemisphere. The guide hole has a prismatic hole structure, the shape of which is adapted to the shape of the guide rod. The guide rod passes through the guide hole, maintaining the axis of the feed hole and the axis of the feed pipe in the same vertical plane. A limit nut is installed at the end of the guide rod located outside the second hemisphere. A spring is located inside the jet head, one end of which abuts against the inner wall of the second hemisphere, and the other end abuts against the end of the plunger.

[0006] In a preferred embodiment of the present invention, the plunger has a hollow tubular structure on the side of the feed hole away from the guide rod, forming the air passage inside; an air inlet is provided at the bottom of the air passage near the feed hole; when the plunger moves to the point where the air inlet communicates with the inside of the jet head, the plunger simultaneously blocks and seals the feed pipe and the discharge pipe; the pipe wall at the end of the plunger away from the guide rod has multiple notches, which are arranged in a circumferential array around the axis of the plunger, and the positions of the notches correspond to the positions of the air inlet pipe.

[0007] In a preferred embodiment of the present invention, a dustproof component is installed at each jet nozzle, and the dustproof component is only in the open state when the jet head sprays air outward.

[0008] In a preferred embodiment of the present invention, the dustproof component includes a cylinder, a baffle, a rotating shaft, and a torsion spring; one end of the outer wall of the cylinder is provided with an external thread, and the inner wall of the air jet hole is provided with an internal thread, and the cylinder is threadedly connected and installed at the air jet hole; the baffle is a circular structure, and the diameter of the baffle is adapted to the inner diameter of the cylinder; the rotating shaft is installed in the cylinder in a radial direction, and the rotating shaft passes through the baffle, and the baffle rotates with the rotating shaft; a convex ring is fixedly provided on the outer wall of the cylinder corresponding to the hole through which the rotating shaft passes, and an end cap is installed on the outer side of the convex ring; the torsion spring is located inside the convex ring, and the torsion spring is used to drive the rotating shaft to rotate and reset to maintain the state of the baffle blocking the inside of the cylinder.

[0009] In a preferred embodiment of the present invention, a torsion spring is installed on the inner side of a convex ring, a first groove is provided on the top of the rotating shaft corresponding to the first rotating arm of the torsion spring, and a second groove is provided on the inner wall of the convex ring corresponding to the second rotating arm of the torsion spring; the torsion spring is sleeved on the top of the rotating shaft, the first rotating arm is engaged in the first groove, and the second rotating arm is engaged in the second groove.

[0010] In a preferred embodiment of the present invention, the rotating shaft includes a first shaft body, a second shaft body, and a third shaft body connected in sequence; the first shaft body and the third shaft body are cylindrical structures, and the second shaft body is a prism structure; the diameter of the first shaft body is greater than the maximum outer diameter of the second shaft body, and the diameter of the third shaft body is smaller than the maximum outer diameter of the second shaft body; the outer wall of the cylinder body is provided with a first through hole corresponding to the first shaft body, and a convex ring is provided on the outside of the port of the first through hole; the inner wall of the cylinder body is provided with a countersunk hole corresponding to the third shaft body, and the rotating shaft is rotatably installed at the first through hole and the countersunk hole; a tube is fixedly provided in the middle of the baffle, the inner wall of the tube is adapted to the shape of the second shaft body, and the baffle rotates with the rotating shaft.

[0011] The present invention also provides a feeding device, including a material tank, a cover plate, an air supply pipe, a material supply pipe, and a nozzle structure; the air supply pipe and the material supply pipe are fixedly inserted through the cover plate, the material tank is mounted on the cover plate by a support frame, the discharge pipe of the material tank is connected to the outer port of the material supply pipe, and a first solenoid valve is installed on the material supply pipe; the outer port of the air supply pipe is connected to the air supply pipe, and a second solenoid valve is installed on the air supply pipe; the other end of the air supply pipe is connected to the air inlet pipe, and the other end of the material supply pipe is connected to the material inlet pipe.

[0012] The beneficial effects of this invention are as follows: The present invention provides a nozzle structure and a feeding device using the nozzle structure. The nozzle structure includes an air jet head, a support tube, a material stop, and a spring. The air jet head is installed at one end of the support tube and has a spherical structure. The outer wall of the air jet head is provided with multiple air jet holes to achieve multi-directional and wide-range air jetting, effectively expanding the cleaning range. The side wall of the support tube is connected to an air inlet pipe and a feed pipe. The air inlet pipe is located at the end of the feed pipe away from the jet head. The other side of the support tube is connected to the feed pipe and a discharge pipe. The material blocking component includes a plunger and a guide rod. The plunger has a material passage hole and slides inside the support tube. A spring is sleeved on the outside of the guide rod. When no air is supplied to the support tube, the spring pushes the plunger into the support tube, so that the material passage hole is aligned and connected with the feed pipe and the discharge pipe, maintaining smooth material supply and achieving the required material supply effect. The plunger has an air passage on the side of the feed hole away from the jet head. By supplying air to the support tube through the air inlet pipe, the plunger can move into the jet head, connecting the air passage with the inside of the jet head, thereby spraying air in multiple directions to achieve effective cleaning. Furthermore, the outer wall of the plunger is cleverly used to block and shield the feed pipe and the discharge pipe, blocking the feeding action and preventing powder materials from entering the feed pipe during subsequent cleaning. When a feeding device with this nozzle structure is applied to a power mixer, auxiliary agents can be added to the mixing tank during the mixing process through the material tank and nozzle structure. After the addition is completed, the operating mode of the nozzle structure can be adjusted to blow away the powder adhering to the lid through air jets, causing the powder to fall into the mixture during the mixing process and serve as a mixing raw material. This prevents the powder from falling onto the finished product later and affecting the quality, and also reduces waste. Furthermore, the overall structure does not require opening the lid, which can improve work efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a nozzle structure provided in a specific embodiment of the present invention; Figure 2 This is a three-dimensional unfolded structural diagram of a nozzle structure provided in a specific embodiment of the present invention; Figure 3 This is a cross-sectional view of a nozzle structure provided in a specific embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of the first hemisphere provided in a specific embodiment of the present invention; Figure 5 This is a three-dimensional structural diagram of the second hemisphere provided in a specific embodiment of the present invention; Figure 6 This is a three-dimensional structural diagram of the material stop provided in a specific embodiment of the present invention; Figure 7 This is a three-dimensional structural schematic diagram of the dustproof component provided in a specific embodiment of the present invention; Figure 8 This is a three-dimensional unfolded structural diagram of the dustproof component provided in a specific embodiment of the present invention; Figure 9 This is a three-dimensional structural diagram of the cylinder provided in a specific embodiment of the present invention; Figure 10 This is a three-dimensional structural diagram of the rotating shaft provided in a specific embodiment of the present invention; Figure 11 This is a schematic diagram of the feeding device provided in a specific embodiment of the present invention.

[0014] In the picture: 100. Jet nozzle; 110. First hemisphere; 111. Third perforation; 112. Connecting pipe; 120. Second hemisphere; 121. Guide hole; 130. Jet nozzle; 200, Support pipe; 210, Air inlet pipe; 220, Feed pipe; 230, Discharge pipe; 300. Material stop; 310. Plunger; 311. Material passage; 312. Air passage; 313. Air inlet; 314. Notch; 320. Guide rod; 330. Limit nut; 400, Spring; 500, Dustproof component; 510, Cylinder body; 511, Convex ring; 512, Second slot; 513, First through hole; 514, Countersunk hole; 520, Baffle; 521, Insert tube; 530, Shaft; 531, First shaft; 532, Second shaft; 533, Third shaft; 534, First slot; 540, Torsion spring; 550, End cap; 610, Material tank; 620, Cover plate; 630, Air supply pipe; 640, Material supply pipe; 650, First solenoid valve; 660, Air supply pipe; 670, Second solenoid valve. Detailed Implementation

[0015] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0016] like Figures 1 to 3 As shown, a nozzle structure is disclosed in a specific embodiment of the present invention, including a jet nozzle 100, a support tube 200, a baffle 300, and a spring 400; the jet nozzle 100 is installed at one end of the support tube 200, and the jet nozzle has a spherical structure, with multiple jet holes 130 on the outer wall of the jet nozzle 100; an air inlet pipe 210 and a feed pipe 220 are connected to the side wall of the support tube 200, the air inlet pipe is located at the end of the feed pipe away from the jet nozzle, and a discharge pipe 230 is connected to the other side of the support tube 200 corresponding to the feed pipe 220; the baffle... The component 300 includes a plunger 310 and a guide rod 320. The plunger 310 is provided with a material passage hole 311. The plunger 310 is slidably disposed inside the support tube 200. The spring 400 is sleeved on the outside of the guide rod 320 to push the plunger, so that the material passage hole is connected to the feed pipe and the discharge pipe. The plunger 310 is provided with an air passage 312 on the side of the material passage hole 311 away from the jet head 100. Air is supplied to the inside of the support tube through the air inlet pipe, which can make the plunger move into the inside of the jet head, thereby blocking the feed pipe and the discharge pipe and connecting the air passage with the inside of the jet head.

[0017] The aforementioned nozzle structure includes an air jet head, a support tube, a baffle, and a spring. The air jet head is installed at one end of the support tube and has a spherical structure. Multiple air jet holes are provided on the outer wall of the air jet head to achieve multi-directional, wide-range air jetting, effectively expanding the cleaning area. An air inlet pipe and a feed pipe are connected to the side wall of the support tube. The air inlet pipe is located at the end of the feed pipe furthest from the air jet head, and a discharge pipe is connected to the other side of the support tube corresponding to the feed pipe. The baffle includes a plunger and a guide rod. The plunger has a material passage hole and slides inside the support tube. A spring is sleeved on the outside of the guide rod. When no air is supplied to the support tube, the spring pushes the plunger into the support tube, aligning the material passage hole with the feed pipe and discharge pipe for connection, maintaining smooth material supply and achieving the desired material supply effect. The plunger has an air passage on the side of the feed hole away from the jet head. By supplying air to the support tube through the air inlet pipe, the plunger can move into the jet head, connecting the air passage with the inside of the jet head, thereby spraying air in multiple directions to achieve effective cleaning. Furthermore, the outer wall of the plunger is cleverly used to block and shield the feed pipe and the discharge pipe, blocking the feeding action and preventing powder materials from entering the feed pipe during subsequent cleaning.

[0018] Furthermore, such as Figures 2 to 6As shown, the jet head 100 includes a first hemisphere 110 and a second hemisphere 120. A first flange is fixedly mounted on the edge of the first hemisphere, and a second flange is fixedly mounted on the edge of the second hemisphere. The first flange and the second flange are connected by multiple bolts, thus forming a spherical structure for the entire jet head. The split structure facilitates manufacturing and allows for easy disassembly and assembly of internal components. Both the first hemisphere 110 and the second hemisphere 120 are provided with multiple jet holes 130, arranged in multiple groups. These groups are spaced apart along the centerline of the first and second hemispheres. Each jet hole group includes multiple jet holes arranged in a circumferential array around the centerline, effectively expanding the jet range and enabling multi-directional blowing. A third through-hole 111 is located at the center of the first hemisphere 110. The diameter of the third through-hole 111 matches the diameter of the plunger 310, allowing the plunger to enter the interior of the first hemisphere. The port of the third through-hole 111... A connecting pipe 112 is provided on the side. The inner diameter of the connecting pipe 112 is adapted to the outer diameter of the support pipe 200. The inner wall of the connecting pipe is provided with internal threads, and the outer wall of the support pipe is provided with external threads. The connecting pipe and the support pipe are threaded together to realize the connection between the first hemisphere and the support pipe. It is an assembled structure for easy disassembly and assembly. A guide hole 121 is provided at the center of the second hemisphere 120. The guide hole is a prismatic hole structure. The shape of the guide hole 121 is adapted to the shape of the guide rod 320. The guide rod passes through the guide hole to keep the axis of the material passage hole and the axis of the feed pipe in the same vertical plane, ensuring that the material passage hole can be aligned and connected with the feed pipe, thereby realizing the passage of material. A limit nut 330 is installed at the end of the guide rod 320 located outside the second hemisphere 120. A spring 400 is located inside the jet head 100. One end of the spring 400 abuts against the inner wall of the second hemisphere 120, and the other end abuts against the end of the plunger 310. The spring provides pushing force to the plunger.

[0019] A first flange is fixedly mounted on the edge of the first hemisphere, and a second flange is fixedly mounted on the edge of the second hemisphere. The first flange and the second flange are connected by multiple bolts, thereby making the entire jet head form a spherical structure.

[0020] Furthermore, such as Figure 6 As shown, the plunger has a hollow tubular structure on the side of the material passage away from the guide rod, forming the air passage inside; the bottom of the air passage 312 near the material passage 311 is provided with an air port 313; when the plunger 310 moves to the point where the air port 313 communicates with the inside of the jet head 100, the plunger 310 simultaneously blocks and seals the feed pipe 220 and the discharge pipe 230. By cleverly utilizing the structure of the plunger, the connection mode is changed by the movement of the plunger, thus satisfying the effect of material discharge or jet spraying. The end of the plunger 310 away from the guide rod 320 has multiple notches 314 on its tube wall. The multiple notches are arranged in a circumferential array around the axis of the plunger. The position of the notches 314 corresponds to the position of the air inlet pipe 210, ensuring that the air passage is connected to the air inlet pipe so as to supply air into the air passage, thereby driving the movement of the baffle and realizing the connection with the jet head, thereby performing jetting.

[0021] Furthermore, each jet nozzle 130 is equipped with a dustproof component 500. The dustproof component is only open when the jet head is spraying air outwards. This prevents powder and moisture from entering the interior of the jet head from the jet nozzle during the initial mixing process, thus preventing the material from clumping inside the jet head and avoiding blockage.

[0022] Furthermore, such as Figures 8 to 10 As shown, the dustproof component 500 includes a cylinder 510, a baffle 520, a rotating shaft 530, and a torsion spring 540. One end of the cylinder has an external thread on its outer wall, and the inner wall of the air jet hole has an internal thread. The cylinder 510 is threadedly connected to the air jet hole 130. The baffle 520 has a circular shape, and its diameter matches the inner diameter of the cylinder 510. The rotating shaft 530 is radially rotatable at the cylinder 510, passing through the baffle 520, and the baffle rotates with the shaft. The outer wall of the cylinder 510... A convex ring 511 is fixedly installed at the hole where the rotating shaft should pass through, and an end cap 550 is installed on the outside of the convex ring 511; a torsion spring 540 is located inside the convex ring 511, and the torsion spring 540 is used to drive the rotating shaft 530 to rotate and reset to maintain the state of the baffle blocking the inside of the cylinder; the assembly structure is adopted, which can facilitate the processing and production of each structural component; the assembly method is simple, and the dustproof component can be used as an independent modular structure. The entire dustproof component can be installed on the jet head, which is convenient for assembly with the jet head.

[0023] Furthermore, the outer side of the cylinder away from the air jet is thickened, and a third slot is provided at the port. The third slot is a hexagonal prism structure, which is used to fit external tools for screwing, making it easy to disassemble and assemble the entire dustproof component.

[0024] Furthermore, the torsion spring 540 is installed on the inner side of the convex ring 511. The top of the rotating shaft 530 is provided with a first groove 534 corresponding to the first rotating arm of the torsion spring, and the inner wall of the convex ring 511 is provided with a second groove 512 corresponding to the second rotating arm of the torsion spring. The torsion spring 540 is sleeved on the top of the rotating shaft 530, with the first rotating arm locked in the first groove and the second rotating arm locked in the second groove, thereby locking the two rotating arms of the torsion spring so that the torsion spring can be smoothly reset to the blocking and intercepting position, achieving the effect of preventing powder from entering.

[0025] Furthermore, such as Figure 10As shown, the rotating shaft 530 includes a first shaft body 531, a second shaft body 532, and a third shaft body 533 connected in sequence; the first and third shaft bodies are cylindrical structures, and the second shaft body is a prism structure; the diameter of the first shaft body is larger than the maximum outer diameter of the second shaft body, and the diameter of the third shaft body is smaller than the maximum outer diameter of the second shaft body; the outer wall of the cylindrical body 510 is provided with a first through hole 513 corresponding to the first shaft body 531, and a convex ring 511 is provided on the outside of the port of the first through hole 513; the inner wall of the cylindrical body 510 is provided with a countersunk hole 514 corresponding to the third shaft body 533, and the rotating shaft is rotatably mounted at the first through hole and the countersunk hole; the first and third shaft bodies serve as the basis for rotation, and the diameters of the first through hole and the countersunk hole are not... Furthermore, the diameter of the first perforation is relatively large, ensuring smooth insertion of the rotating shaft; a tube 521 is fixedly provided in the middle of the baffle 520, and the inner wall of the tube 521 is adapted to the shape of the second shaft 532. The baffle rotates with the rotating shaft, and the second shaft has a prismatic structure, ensuring that it is engaged with the baffle, thereby driving the baffle to rotate synchronously; when assembling the dustproof parts, the baffle must first be placed in the cylinder, then the rotating shaft is inserted accordingly, and the third shaft is rotated and positioned at the countersunk hole, so that the second shaft passes through the baffle, and the third shaft is rotated and positioned at the first perforation; then the torsion spring is placed in the convex ring and aligned so that the two rotating arms of the torsion spring are engaged in the corresponding slots; finally, the end cap is installed.

[0026] The present invention also discloses a feeding device, such as... Figure 11 As shown, the device includes a material tank 610, a cover plate 620, an air supply pipe 630, a material supply pipe 640, and a nozzle structure. The air supply pipe 630 and the material supply pipe 640 are fixedly inserted through the cover plate 620. The material tank 610 is mounted on the cover plate 620 via a support frame. The discharge pipe of the material tank 610 is connected to the outer port of the material supply pipe 640, and a first solenoid valve 650 is installed on the material supply pipe 640. The outer port of the air supply pipe 630 is connected to the air supply pipe 660, and a second solenoid valve 670 is installed on the air supply pipe 660. The other end of pipe 0 is connected to the air inlet pipe 210, and the other end of the material conveying pipe 640 is connected to the feed pipe 220. Both ends of the air conveying pipe, both ends of the material conveying pipe, the end of the discharge pipe, the end of the air supply pipe, the end of the air inlet pipe, and the end of the feed pipe are all provided with external threads. A sleeve is provided on the outer side of the pipe body connection area, and the inner wall of the sleeve is provided with internal threads to achieve threaded connection between the two pipe bodies. The overall structure is an assembly type, which facilitates the processing and production of each structural component, as well as the disassembly and replacement of parts, making it convenient to use.

[0027] Furthermore, the edge of the cover plate is provided with multiple fifth perforations. In actual use, the cover plate can be installed on the outside of the feeding port of the mixer barrel cover, and the nozzle structure extends into the interior of the mixing barrel, directly cooperating with the corresponding mixer. Thus, the barrel cover can be used to add materials into the mixing barrel, and the barrel cover can also be used to blow off the powder adhering to the barrel cover by spraying air, preventing the powder from falling into the finished product after mixing when the cover is opened or unloaded at the end, thus avoiding affecting the quality of the product.

[0028] This invention has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. This invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims are also within the protection scope of this invention.

Claims

1. A nozzle structure, characterized in that: Includes jet head, support pipe, baffle, and spring; The jet head is installed at one end of the support tube. The jet head has a spherical structure and multiple jet holes are provided on the outer wall of the jet head. The side wall of the support tube is connected to an air inlet pipe and a feed pipe. The air inlet pipe is located at the end of the feed pipe away from the jet head, and the other side of the support tube is connected to a discharge pipe corresponding to the feed pipe. The material stopper includes a plunger and a guide rod. The plunger has a material passage hole and slides inside the support tube. A spring is sleeved on the outside of the guide rod to push the plunger, so that the material passage hole is connected to the feed pipe and the discharge pipe. The plunger has an air passage on the side of the feed hole away from the jet head. By supplying air to the support tube through the air inlet pipe, the plunger can move into the jet head, blocking the feed pipe and the discharge pipe, and connecting the air passage with the inside of the jet head. The jet head includes a first hemisphere and a second hemisphere, which are arranged opposite to each other and fixedly connected by bolts. Both the first hemisphere and the second hemisphere are provided with multiple jet holes. The center of the first hemisphere has a third perforation, the diameter of which is adapted to the diameter of the plunger; the outer side of the port of the third perforation has a connecting pipe, the inner diameter of which is adapted to the outer diameter of the support pipe and is threadedly connected. A guide hole is provided at the center of the second hemisphere. The guide hole has a prismatic hole structure and its shape is adapted to the shape of the guide rod. The guide rod passes through the guide hole to keep the axis of the material passage hole and the axis of the feed pipe on the same vertical plane. A limit nut is installed at the end of the guide rod located outside the second hemisphere. The spring is located inside the jet head, with one end abutting against the inner wall of the second hemisphere and the other end abutting against the end of the plunger; The plunger has a hollow tubular structure on the side of the feed hole away from the guide rod, forming the air passage inside; an air port is provided at the bottom of the air passage near the feed hole; when the plunger moves to the point where the air port communicates with the inside of the jet head, the plunger simultaneously blocks and seals the feed pipe and the discharge pipe. The end of the plunger away from the guide rod has multiple notches on the tube wall. These notches are arranged in a circumferential array around the axis of the plunger, and the positions of the notches correspond to the positions of the intake pipe.

2. The nozzle structure according to claim 1, characterized in that: Each jet nozzle is equipped with a dustproof component, which is only open when the jet head is expelling air.

3. The nozzle structure according to claim 2, characterized in that: The dustproof components include the cylinder, baffle, shaft, and torsion spring; The outer wall of one end of the cylinder is provided with external threads, and the inner wall of the air jet hole is provided with internal threads. The cylinder is threadedly connected and installed at the air jet hole. The baffle has a circular shape, and its diameter is matched with the inner diameter of the cylinder. The rotating shaft is installed radially at the cylinder, and the rotating shaft passes through the baffle, which rotates with the rotating shaft. A convex ring is fixedly provided on the outer wall of the cylinder corresponding to the hole through which the rotating shaft passes, and an end cap is installed on the outside of the convex ring; a torsion spring is located inside the convex ring, and the torsion spring is used to drive the rotating shaft to rotate and reset to maintain the state of the baffle blocking the inside of the cylinder.

4. The nozzle structure according to claim 3, characterized in that: The torsion spring is installed on the inner side of the convex ring. The top of the rotating shaft is provided with a first groove corresponding to the first rotating arm of the torsion spring, and the inner wall of the convex ring is provided with a second groove corresponding to the second rotating arm of the torsion spring. The torsion spring is sleeved on the top of the rotating shaft, with the first rotating arm locked in the first groove and the second rotating arm locked in the second groove.

5. A nozzle structure according to claim 4, characterized in that: The rotating shaft includes a first shaft body, a second shaft body, and a third shaft body connected in sequence; The first and third shafts are cylindrical, while the second shaft is prismatic. The diameter of the first shaft is greater than the maximum outer diameter of the second shaft, and the diameter of the third shaft is smaller than the maximum outer diameter of the second shaft. The outer wall of the cylinder is provided with a first through hole corresponding to the first shaft, and a protruding ring is provided on the outside of the port of the first through hole. The inner wall of the cylinder is provided with a countersunk hole corresponding to the third shaft, and the rotating shaft is rotatably installed at the first through hole and the countersunk hole. A tube is fixedly installed in the middle of the baffle. The inner wall of the tube is adapted to the shape of the second shaft. The baffle rotates with the shaft.

6. A feeding device, characterized in that: It includes a material tank, a cover plate, an air supply pipe, a material supply pipe, and the nozzle structure as described in claim 5; The gas delivery pipe and the material delivery pipe are fixedly connected through the cover plate. The material tank is installed on the cover plate by a support frame. The discharge pipe of the material tank is connected to the outer port of the material delivery pipe. A first solenoid valve is installed on the material delivery pipe. The outer port of the gas delivery pipe is connected to the gas supply pipe. A second solenoid valve is installed on the gas supply pipe. The other end of the air supply pipe is connected to the air inlet pipe, and the other end of the material supply pipe is connected to the material inlet pipe.

Images