A dispenser

Abstract

The present application provides a kind of dispenser, belongs to liquor drinking equipment technical field.It solves the operation of existing dispenser disassembly and replacement top core is more troublesome problem.The present application, including valve body, top core and handle, the air inlet hole is opened in valve body, the inner end of air inlet hole is penetrated to the inner cavity side wall of valve body, air path core and the elastic member for making air path core act on valve body and block air inlet hole in air inlet hole are equipped, the inner end of air path core has when blocking air inlet hole can be protruded from the inner end hole of air inlet hole in the inner cavity side wall of valve body, the work part, the outer surface of top core has concave-convex structure, and when top core is pressed into the inner cavity of valve body, concave-convex structure can push work part to make air inlet hole conductive.The disassembly and replacement of the top core of the present application are more convenient.

Description

Technical Field

[0001] This invention belongs to the technical field of beverage drinking equipment, and relates to a dispenser. Background Technology

[0002] A dispenser is a device that connects to the top of a beer keg and works in conjunction with a beer spear inside the keg to draw beer out of the keg. When the operator pulls the handle on the dispenser, the beer tube inside the dispenser extends or retracts. When the beer tube moves downwards, it pushes open the valve on the beer spear, opening the beer passage. Simultaneously, an external air source connects to the keg, allowing gas to pass through the dispenser and beer spear into the keg, thus forcing the beer out of the keg.

[0003] A more traditional dispenser, such as the beer keg dispensing valve disclosed in patent document (application number: 201310513342.9), includes a valve body, a guide tube, and a handle. The valve body has a through-hole at its center, and an air inlet pipe communicating with the guide hole on its side. The guide tube, also called the top core, is located at the guide hole and is sealed to the valve body. An air outlet is formed between the bottom of the valve body and the guide tube, allowing communication with the inside of the beer keg. The handle is hinged to the valve body and connected to the guide tube. The guide tube has a side... The dispenser has an air intake structure. The handle of the dispensing valve is hinged to the valve body, and the protrusion on the handle is always locked in the groove of the dispensing tube, realizing the linkage between the two. Therefore, the dispensing tube is difficult to remove from the valve body unless the handle is removed. The dispensing valve is usually used as a non-removable unit. After use, the whole unit is rinsed. However, with the increasing food safety requirements, and the fact that rinsing the whole unit, especially rinsing the inside of the dispensing tube, is also quite troublesome, a dispenser with a replaceable dispensing tube has emerged. After use, the dispensing tube can be directly replaced.

[0004] For example, the patent document (application number: 201880051409.2) describes a beverage dispensing system that includes a one-way dispensing line and a dispensing head. The one-way dispensing line includes a flexible tube and a connecting unit. During assembly, the connecting unit is inserted into the dispensing head. By turning the actuation handle, the connecting unit can be pressed downward into the dispensing head. The lower end of the connecting unit can then push down to open the valve, opening the beverage path. Then, the gas shut-off element at the gas inlet needs to be manually operated to open the gas path. The gas source presses gas into the container through the gas path, thereby forcing the beverage out of the container. Similarly, the gas shut-off element needs to be manually closed before disassembly. Otherwise, when the dispensing head is removed from the container and the connecting unit is disassembled, the gas source will leak, resulting in waste. Then, the actuation handle is turned to disassemble. It can be seen that this dispensing system requires manual operation of the gas shut-off element when disassembling and assembling the connecting unit, making the disassembly and assembly of the connecting unit quite troublesome. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a distributor that solves the problem of cumbersome operation in disassembling and replacing the top core of existing distributors.

[0006] The objective of this invention can be achieved through the following technical solution: A distributor includes a valve body, a columnar top core, and a handle capable of pressing the top core downward from the upper end of the valve body into the inner cavity of the valve body. The valve body has an air inlet hole. The air inlet hole extends through to the inner wall of the valve body. An air passage core and an elastic element are provided in the air inlet hole to act on the valve body towards the inner end of the air inlet hole and block the air inlet hole. The inner end of the air passage core has a working part that can protrude from the inner end opening of the air inlet hole onto the inner wall of the valve body when the air inlet hole is blocked. The outer surface of the top core has a concave-convex structure, and when the top core is pressed downward into the inner cavity of the valve body, the concave-convex structure can push the working part to open the air inlet hole.

[0007] The top core is pressed downwards into the valve body cavity from the top of the valve body by the handle. Therefore, after the handle releases the top core, it can also be pulled out from the top of the valve body, making the top core removable and replaceable. The outer end of the air inlet on the valve body is connected to a gas source such as a high-pressure gas cylinder through an air pipe. Since there is an air passage core inside the air inlet, before the top core is assembled, the air passage core abuts against the valve body and blocks the air inlet under the action of the elastic element to prevent gas cylinder leakage. Therefore, there is no need to close the gas cylinder valve. When assembling the top core, attach the valve body to the wine spear on the barrel. The top core is cylindrical and is vertically inserted from the top of the valve body. Turn the handle and press the top core down. At this time, because the air passage core is blocked by the elastic force of the elastic element towards the inner end of the air inlet, and the working part on the air passage core protrudes from the inner wall of the valve body, the concave and convex structure can push the working part protruding from the inner wall of the valve body during the downward movement of the top core. This causes the air passage core to compress the elastic element and open the air inlet. At the same time, the lower end of the top core can press down on the valve core of the wine spear to open the wine passage. That is, by turning the handle in one step, two functions are achieved simultaneously: pushing the working part of the air passage core to open the air inlet and pushing the valve core of the wine spear to open the wine passage. The two functions are achieved simultaneously. When the top core needs to be disassembled and replaced, pull the handle to release the top core. As the top core is pulled upwards, the valve core of the dispensing spout gradually closes due to the pressure from the lower end of the top core. The concave and convex structures on the top core also separate from the working part, and the air passage core, under the action of the elastic element, re-blocks the air inlet. Therefore, this dispenser requires only one operation—pulling the handle—to simultaneously open the dispensing path and air inlet during top core assembly, eliminating the need to operate the shut-off valve to open the air inlet after assembly. Similarly, disassembling the top core also requires only one operation—pulling the handle—to simultaneously close the dispensing path and air inlet, eliminating the need to first close the shut-off valve. Thus, top core disassembly and replacement are much more convenient.

[0008] In the aforementioned distributor, the concave-convex structure includes a radially protruding pushing portion on the outer peripheral wall of the top core. When the top core is pressed downward into the valve body cavity, the pushing portion can push the working part, thus opening the air inlet. The pushing portion protrudes from the outer peripheral wall of the top core, thus forming a convex-concave structure. When the top core is just inserted into the valve body cavity, the working part protruding from the side wall of the valve body cavity either has a gap with the outer peripheral wall of the top core or only contacts the outer peripheral wall of the top core, but the air passage core is not pushed until the pushing portion acts on the working part, thus pushing the working part and opening the air inlet. Another method of using a concave-convex structure is to make the outer diameter of the top core close to the inner diameter of the valve body cavity, so that the outer peripheral wall of the top core fits against the inner wall of the valve body cavity. A relief groove with its lower end penetrating is opened along the axial direction on the outer peripheral wall of the top core. This relief groove and the outer peripheral wall of the top core form a concave-convex structure. When the top core is just inserted into the valve body cavity, the working part protruding from the side wall of the valve body cavity is located in the relief groove. The air passage core will not be pushed until the upper groove wall of the relief groove acts on the working part, which can push the working part and open the air inlet.

[0009] In the aforementioned distributor, the pusher portion is arranged circumferentially, and its lower end has a circumferentially arranged pusher cone surface with its smaller end facing downwards. When the pusher core is pressed downwards into the valve body cavity, the pusher cone surface can push the working part, thus opening the air inlet. By pushing the working part with the pusher cone surface, the air passage core is gradually pushed, making the operation smoother and less strenuous. Since the pusher cone surface is circumferentially arranged, the pusher core only needs to be inserted into the valve body; there is no need to adjust the circumferential angle of the pusher core to align with the working part, making the operation more convenient.

[0010] In the aforementioned distributor, the outer circumferential surface of the pusher is cylindrical, and an annular sealing groove is circumferentially formed on the inner wall of the valve body. A rubber ring is installed in the sealing groove, positioned above the inner end opening of the air inlet. When the pusher core is pressed downwards into the valve body cavity, the outer circumferential surface of the pusher core slides against the inner wall of the valve body cavity, and the outer circumferential surface of the pusher core is pressed tightly against the rubber ring. After the pusher core is pressed into the valve body, the rubber ring is pressed between the outer circumferential surface of the pusher core and the valve body, sealing the two and preventing gas from leaking upwards from between the valve body and the pusher core. Simultaneously, after the pusher core is assembled, the working part always presses against the outer circumferential surface of the pusher core, causing the pusher core to be subjected to lateral force. Through the cooperation between the outer circumferential surface of the pusher core and the inner wall of the valve body cavity, the pusher core can be radially limited, preventing displacement of the pusher core and affecting the sealing of the alcohol and gas circuits.

[0011] In the aforementioned distributor, the lower edge of the inner cavity sidewall of the valve body has a relief cone surface with the larger end facing downwards. The inner end of the air inlet extends through the lower part of the inner cavity sidewall of the valve body and the relief cone surface. In order to radially limit the pusher, the outer peripheral surface of the pusher part is in contact with the inner cavity sidewall of the valve body. However, this also means that after the pusher is pressed down, the outer peripheral surface of the pusher part may block the opening of the air inlet through the inner cavity sidewall of the valve body. Therefore, a relief cone surface is provided at the lower edge of the inner cavity sidewall of the valve body, and the inner end of the air inlet extends through the relief cone surface. There is a gap between the relief cone surface and the outer peripheral surface of the pusher part, thereby preventing the inner end of the air inlet from being blocked.

[0012] In the aforementioned distributor, the inner end of the air inlet has a circumferential sealing flange, and the sealing flange has a circumferential sealing cone surface. The air passage core is cylindrical, and the aforementioned working part is located at the inner end of the air passage core. A sealing ring is fitted on the air passage core, and under the action of the elastic element, the sealing ring can abut against the sealing cone surface to block the air inlet. This structure ensures that the air passage core is subjected to both the force of the elastic element and the air pressure inside the air pipe, thereby improving sealing stability. When the pushing part pushes the working part, the sealing ring disengages from the sealing cone surface, and the air inlet opens.

[0013] In the aforementioned distributor, the working part is hemispherical, and its outer diameter is larger than that of the air passage core. When the sealing ring abuts against the sealing cone surface, the spherical surface of the working part protrudes from the inner cavity sidewall of the valve body. By pushing the spherical surface of the working part against the pushing cone surface of the pushing part, the sliding friction between the two is reduced, resulting in smoother and less strenuous operation.

[0014] In the aforementioned distributor, the outer wall of the air passage core has a circumferential guide portion, the outer circumferential wall of which slides against the wall of the air inlet. The sealing ring is located between the guide portion and the working part. A limiting sleeve is screwed into the air inlet, and the inner wall of the limiting sleeve has a circumferential limiting ring. The elastic element is a helical spring, with one end sleeved on the air passage core and abutting against the guide portion, and the other end extending into the limiting sleeve and abutting against the limiting ring. Since the pushing force of the push cone on the working part is lateral, the sliding fit between the outer circumferential surface of the guide portion and the wall of the air inlet provides guidance for the movement of the air passage core, thereby preventing the air passage core from tilting and ensuring the sealing performance when the sealing ring abuts against the sealing cone surface.

[0015] In the aforementioned distributor, the air inlet is angled, with its inner end lower than its outer end. This positions the inner end of the air inlet at the bottom of the valve body, closer to the air inlet of the nozzle, and provides more space above the inner end of the air inlet for sealing and other structural features, ensuring a tight seal throughout the air passage.

[0016] In the aforementioned dispenser, the lower end of the valve body has an annular fastening portion, and an annular sealing gasket is circumferentially fixed to the inner circumferential wall of the fastening portion. The lower outer circumferential wall of the top core has a closed conical surface with the small end facing downwards, which is located below the pushing conical surface. When the top core is pressed downwards into the valve body cavity, the closed conical surface presses against the sealing gasket, and the working part abuts against the outer circumferential surface of the pushing portion. When the valve body is fastened to the wine spear of the wine barrel through the fastening portion, the sealing gasket presses downwards against the upper end surface of the wine spear. When the top core pushes downwards against the valve core of the wine spear, the closed conical surface presses against the sealing gasket, thereby preventing gas leakage between the valve body and the wine spear when the pushing conical surface opens the working part.

[0017] Compared with existing technologies, this dispenser has the following advantages:

[0018] 1. Because the working part on the air passage core protrudes from the inner wall of the valve body, the top core can push the working part during downward movement, causing the air passage core to compress the elastic element and open the air inlet. At the same time, the lower end of the top core can press down on the valve core of the wine spear to open the wine passage. When the top core is removed, the air inlet and the wine passage can be closed at the same time. That is, the two functions of opening and closing the air inlet and the wine passage can be achieved in one operation, making the disassembly and replacement of the top core more convenient.

[0019] 2. Because the top core can push the air passage core through the pushing cone surface and simultaneously push the valve core of the wine spear at the lower end during the process of pressing the top core into the valve body, the synchronization of the opening and closing of the wine passage and the air inlet can be guaranteed.

[0020] 3. Since the outer peripheral surface of the pusher part is in contact with the inner wall of the valve body, the outer peripheral surface of the pusher part may block the air inlet hole from penetrating to the opening on the inner wall of the valve body after the pusher core is pressed down. To address this, a clearance cone surface is provided at the lower edge of the inner wall of the valve body, and the inner end of the air inlet hole is inserted into the clearance cone surface. There is a gap between the clearance cone surface and the outer peripheral surface of the pusher part to avoid the inner end of the air inlet hole being blocked. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the distributor.

[0022] Figure 2 This is a cross-sectional view of the distributor when the top core is not fully pressed into the valve body.

[0023] Figure 3 yes Figure 2 Enlarged view of the structure at point A in the middle.

[0024] Figure 4 This is a top view of the structure when the valve body and the air passage core are in contact.

[0025] Figure 5 This is a cross-sectional view of the distributor when the top core is fully pressed into the valve body.

[0026] Figure 6 yes Figure 5 Enlarged view of the structure at point B.

[0027] Figure 7 This is a schematic diagram of the three-dimensional structure of the top core.

[0028] Figure 8 This is a three-dimensional structural diagram of the valve body and the air passage core in combination.

[0029] Figure 9 yes Figure 8 Enlarged view of the structure at point C.

[0030] In the diagram, 1. Valve body; 11. Connecting pipe; 111. Connector; 12. Air inlet; 13. Sealing groove; 14. Rubber ring; 15. Relief cone surface; 16. Sealing flange; 161. Sealing cone surface; 17. Fastening part; 171. Connecting flange; 172. Sealing gasket; 173. Fastening flange; 18. Stepped surface; 19. Locking part; 191. Bayonet; 2. Top core; 21. Pushing part; 211. Pushing cone surface; 22. Sealing cone surface; 23. Wine outlet; 24. Wine outlet hose; 25. Abutment part; 3. Handle; 31. Pressing seat; 32. Locking pin; 4. Air passage core; 41. Working part; 411. Air passage groove; 42. Guide part; 43. Sealing ring; 5. Elastic element; 6. Limiting sleeve; 61. Limiting ring; 7. Butterfly spring; 8. Pressure relief valve. Detailed Implementation

[0031] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] like Figure 1 As shown, a dispenser includes a valve body 1 and a top core 2. The valve body 1 is cylindrical, with openings at both the top and bottom. An annular fastening part 17 is located at the lower end of the valve body 1 for fastening to the spout of a wine barrel for connection. Figure 2 , Figure 3 , Figure 4As shown, the outer wall of the valve body 1 has a tubular connecting part 11, the inner hole of which is an air inlet 12. A pressure relief valve 8 is installed on the connecting part 11. A connector 111 for connecting an air pipe is installed at the outer end of the air inlet 12. The inner end of the air inlet 12 extends through to the inner wall of the valve body 1. An air passage core 4 and an elastic element 5 are provided inside the air inlet 12. The elastic element 5 can generate an elastic force on the air passage core 4 toward the inner end of the air inlet 12. Under the action of this elastic force, the air passage core 4 acts on the valve body 1 toward the inner end of the air inlet 12 and blocks the air inlet 12. The inner end of the air passage core 4 has a working part 41. When the air passage core 4 blocks the air inlet 12, the working part 41 protrudes from the inner end of the air inlet 12 out of the inner wall of the valve body 1. The inner wall of the valve body 1 is cylindrical, and a stepped surface 18 is formed by an indentation in the upper part of the inner wall of the valve body 1. Multiple sets of butterfly springs 7 are stacked on the stepped surface 18. A handle 3 is hinged to one side of the upper edge of the valve body 1, and the other side of the valve body 1 has an upwardly protruding locking part 19. A bayonet 191 is provided on the outer wall of the locking part 19. The handle 3 has a protruding pressing seat 31. When the handle 3 swings upward, it can open the upper port of the valve body 1. A locking pin 32 is installed on the handle 3. When the handle 3 swings downward, it can swing to above the upper port of the valve body 1 and fit onto the locking part 19. The locking pin 32 can be inserted into the bayonet 191 to lock the handle 3. At this time, the pressing seat 31 is located inside the upper port of the valve body 1 and is set downward. Figure 5 , Figure 6 As shown, the top core 2 is cylindrical and made of plastic to reduce replacement costs. An axial outlet hole 23 is provided inside the top core 2. A flexible wine outlet hose 24 communicating with the outlet hole 23 is connected to the upper end of the top core 2. A retaining part 25 is provided on the outer peripheral wall of the upper end of the pusher. When the top core 2 is held vertically and inserted into the valve body 1 from the upper port, the handle 3 is turned, and the pressing seat 31 abuts against the upper end face of the top core 2 and presses it downwards. Under the action of the handle 3, the top core 2 can be pressed downwards into the inner cavity of the valve body 1, causing the retaining part 25 on the top core 2 to compress the disc spring 7 downwards. The outer peripheral wall of the top core 2 also has a radially protruding pusher part 21. During the downward pressing of the top core 2 into the inner cavity of the valve body 1, the pusher part 21 can push the working part 41, causing the air passage core 4 to compress the elastic element 5 and move, thus opening the air inlet 12.

[0033] Specifically, combined Figure 7As shown, the pusher part 21 is arranged circumferentially, and its outer circumferential surface is cylindrical. At the lower end of the pusher part 21, there is a pusher cone surface 211 arranged circumferentially with its small end facing downward. When the pusher core 2 is pressed downward into the inner cavity of the valve body 1, the pusher cone surface 211 can push the working part 41 to make the air inlet 12 open. The inner cavity side wall of the valve body 1 is provided with an annular sealing groove 13. A rubber ring 14 is provided in the sealing groove 13. The rubber ring 14 is located above the inner end opening of the air inlet 12. When the pusher core 2 is pressed downward into the inner cavity of the valve body 1, the outer circumferential surface of the pusher part 21 slides and engages with the inner cavity side wall of the valve body 1, and the outer circumferential surface of the pusher part 21 is pressed tightly with the rubber ring 14 to seal the two and prevent gas from leaking upward from between the valve body 1 and the pusher core 2. The valve body 1 has a relief cone 15 with its large end facing downward along the lower edge of the inner cavity sidewall. The inner end of the air inlet 12 extends through the lower part of the inner cavity sidewall of the valve body 1 and onto the relief cone 15. There is a gap between the relief cone 15 and the outer circumferential surface of the push part 21 to prevent the inner end of the air inlet 12 from being blocked by the outer circumferential surface of the push part 21. The lower end of the valve body 1 has an annular fastening part 17. The inner diameter of the fastening part 17 is larger than the inner diameter of the inner cavity of the valve body 1. The inner wall of the fastening part 17 has a connecting flange 171 circumferentially. An annular sealing gasket 172 is snapped onto the connecting flange 171. The lower edge of the fastening part 17 has a semi-annular fastening flange 173. The lower outer peripheral wall of the top core 2 has a closed conical surface 22 with the small end facing downward. The closed conical surface 22 is located below the push conical surface 211. When the buckle flange 173 is fastened to the wine spear of the wine barrel, the sealing gasket 172 is attached to the upper end surface of the wine spear. When the top core 2 is pressed down into the inner cavity of the valve body 1, the closed conical surface 22 is pressed tightly on the sealing gasket 172, and the working part 41 abuts against the outer peripheral surface of the push part 21, so that the air inlet 12 is in a conductive state.

[0034] The outer end of the connecting pipe 11 is inclined upwards, causing the internal air inlet 12 to be in an inclined state, and the inner end of the air inlet 12 is lower than the outer end. The inner end opening of the air inlet 12 has a circumferential sealing flange 16, and the end face of the sealing flange 16 facing the outer end of the air inlet 12 is a circumferentially arranged sealing cone surface 161. Figure 8 , Figure 9As shown, the air passage core 4 is columnar, and the working part 41 is located at the inner end of the air passage core 4. The working part 41 is hemispherical, and its outer diameter is larger than that of the air passage core 4. Several air passage grooves 411 are formed on the spherical surface of the working part 41. These air passage grooves 411 are evenly distributed circumferentially and penetrate axially. The outer wall of the air passage core 4 has a guide part 42 circumferentially. The outer peripheral wall of the guide part 42 slides in fit with the wall of the air inlet hole 12. A sealing ring 43 is fitted on the air passage core 4. The sealing ring 43 is located between the guide part 42 and the working part 41, and its outer diameter is larger than that of the working part 41. A limiting sleeve 6 is screwed into the air inlet 12. The inner wall of the limiting sleeve 6 has a limiting ring 61 in the circumferential direction. The elastic element 5 is a helical spring. One end of the elastic element 5 is sleeved on the air passage core 4 and abuts against the guide part 42. The other end extends into the limiting sleeve 6 and abuts against the limiting ring 61. By rotating the limiting sleeve 6, the preload of the helical spring on the air passage core 4 can be adjusted. Under the action of the helical spring, the sealing ring 43 can abut against the sealing cone surface 161 to block the air inlet 12. At this time, the spherical surface of the working part 41 protrudes from the inner cavity side wall of the valve body 1.

[0035] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0036] Although this document frequently uses terms such as valve body 1, connecting pipe 11, and connector 111, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A dispenser comprising a valve body (1), a cylindrical top core (2) and a handle (3) capable of pressing the top core (2) downward into the inner cavity of the valve body (1) from the upper end of the valve body (1), the valve body (1) being provided with an air inlet hole (12), characterized in that, The inner end of the air inlet (12) extends through to the inner wall of the valve body (1). An air passage core (4) and an elastic element (5) are provided inside the air inlet (12) to cause the air passage core (4) to act on the valve body (1) and block the air inlet (12) in the direction of the inner end of the air inlet (12). The inner end of the air passage core (4) has a feature that can protrude from the inner end opening of the air inlet (12) into the inner wall of the valve body (1) when the air inlet (12) is blocked. The working part (41) of the wall, the outer surface of the top core (2) has a concave and convex structure, and when the top core (2) is pressed down into the inner cavity of the valve body (1), the concave and convex structure can push the working part (41) so that the air inlet (12) is open; the lower edge of the inner cavity side wall of the valve body (1) has a large end facing downwards relief cone (15) in the circumferential direction, and the inner end of the air inlet (12) penetrates to the lower part of the inner cavity side wall of the valve body (1) and the relief cone (15).

2. The dispenser of claim 1, wherein, The concave-convex structure includes a radially protruding push part (21) on the outer peripheral wall of the top core (2). When the top core (2) is pressed down into the inner cavity of the valve body (1), the push part (21) can push the working part (41) so that the air inlet (12) is open.

3. The dispenser of claim 2, wherein, The push part (21) is arranged circumferentially, and at the lower end of the push part (21) there is a push cone surface (211) arranged circumferentially with the small end facing down. When the core (2) is pressed down into the inner cavity of the valve body (1), the push cone surface (211) can push the working part (41) so that the air inlet (12) is open.

4. The dispenser of claim 3, wherein, The outer peripheral surface of the push part (21) is cylindrical. The inner cavity sidewall of the valve body (1) is provided with an annular sealing groove (13). A rubber ring (14) is provided in the sealing groove (13). The rubber ring (14) is located above the inner end opening of the air inlet (12). When the push core (2) is pressed down into the inner cavity of the valve body (1), the outer peripheral surface of the push part (21) slides with the inner cavity sidewall of the valve body (1), and the outer peripheral surface of the push part (21) is pressed against the rubber ring (14).

5. The dispenser of any one of claims 1-4, wherein, The air inlet (12) has a sealing flange (16) circumferentially at the inner end opening, and the sealing flange (16) has a sealing cone surface (161) circumferentially. The air passage core (4) is columnar, and the working part (41) is located at the inner end of the air passage core (4). A sealing ring (43) is sleeved on the air passage core (4). Under the action of the elastic element (5), the sealing ring (43) can abut against the sealing cone surface (161) to block the air inlet (12).

6. The dispenser of claim 5, wherein, The working part (41) is hemispherical, and the outer diameter of the working part (41) is larger than the outer diameter of the air passage core (4). When the sealing ring (43) abuts against the sealing cone surface (161), the spherical surface of the working part (41) protrudes from the inner cavity sidewall of the valve body (1).

7. The dispenser of claim 6, wherein, The outer wall of the air passage core (4) has a guide portion (42) circumferentially. The outer wall of the guide portion (42) slides in conjunction with the wall of the air inlet (12). The sealing ring (43) is located between the guide portion (42) and the working portion (41). The air inlet (12) is screwed with a limiting sleeve (6). The inner wall of the limiting sleeve (6) has a limiting ring (61) circumferentially. The elastic element (5) is a helical spring. One end of the elastic element (5) is sleeved on the air passage core (4) and abuts against the guide portion (42). The other end extends into the limiting sleeve (6) and abuts against the limiting ring (61).

8. The dispenser of any one of claims 1-4, wherein, The air inlet (12) is inclined, and the inner end of the air inlet (12) is lower than the outer end.

9. The dispenser of claim 3 or 4, wherein, The lower end of the valve body (1) has an annular fastening part (17), and an annular sealing gasket (172) is fixed on the inner circumferential wall of the fastening part (17). The lower end of the top core (2) has a closed cone surface (22) with the small end facing down on the outer circumferential wall. The closed cone surface (22) is located below the push cone surface (211). When the top core (2) is pressed down into the inner cavity of the valve body (1), the closed cone surface (22) is pressed against the sealing gasket (172), and the working part (41) abuts against the outer circumferential surface of the push part (21).

Images