A fill valve

Abstract

This utility model discloses a filling valve, including a valve body and a valve seat. One side of the valve seat is provided with a housing, a valve core, and a first spring. The housing is also provided with a medium inlet, which is connected to the valve seat to assemble the valve core and the first spring into the valve seat. The other side of the valve seat is provided with a second spring, a nozzle, and an outer cover, which is connected to the valve seat to assemble the nozzle and the second spring into the valve seat. Because the nozzle and the valve core are separated, when the nozzle is subjected to external pressure, the nozzle slides inside the valve seat, triggering the valve core to slide and completing the flow of air. Conversely, when the external force disappears, the nozzle resets, separating from the valve core, and the valve core resets to cut off the air supply. This device uses the first and second springs to close the medium channel twice, while the opening of the device relies entirely on the movement of the nozzle, thus overcoming the phenomenon of medium leakage caused by dependence on medium pressure.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically a filling valve. Background Technology

[0002] A search revealed the prior art with publication number CN201439833U, whose working principle is as follows: When the filling valve is working, the interface is connected to the output port of the fluid tank through a quick-connect filling connector. The top of the quick-connect connector generates a thrust on the valve stem of the filling valve. The valve stem compresses the spring under the force. When the thrust is large enough, the valve stem slides inward, and the valve port formed by the sealing ring and the conical inner wall of the body opens. The fluid enters the filling valve through the channel formed between the cutting plane of the valve stem and the body, and through the valve port formed by the conical inner wall of the valve stem and the body. It then flows into the refrigeration system pipeline through the valve hole to fill the corresponding filling body. During the filling process, when the required filling volume is reached, the quick-connect filling connector is pulled out. The valve stem loses its thrust, the spring returns to its original position, and the valve stem slides outward. The sealing ring automatically seals the valve port between the body and the valve stem under the action of elasticity, which acts as a check valve, thereby effectively preventing the backflow of the filling liquid. It is evident that the medium relies entirely on the pressure of the medium during operation. If the pressure of the medium is too high, leakage will occur before filling. Utility Model Content

[0003] The purpose of this invention is to provide a filling valve to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a filling valve, comprising a valve body, the valve body including a valve seat, one side of the valve seat being provided with a housing, a valve core and a first spring; the housing is also provided with a medium inlet, which is connected to the valve seat to assemble the valve core and the first spring into the valve seat; the other side of the valve seat is also provided with a second spring, an air nozzle and an outer cover, which is connected to the valve seat to assemble the air nozzle and the second spring into the valve seat.

[0005] As a preferred technical solution of this utility model: the valve core includes a sliding part that slides within the valve seat, the sliding part is further provided with a plug, and a medium outlet is provided between the sliding part and the plug.

[0006] As a preferred technical solution of this utility model: the air nozzle includes a mounting part, one end of which slides in the valve seat through a provided push rod, and the push rod has a through hole inside.

[0007] As a preferred technical solution of this utility model: the mounting part is further provided with a mounting groove, and a sealing gasket is provided in the mounting groove. The sealing gasket is fixed in the mounting groove by a pressure ring.

[0008] As a preferred technical solution of this utility model, it also includes an actuator, which is connected to the valve body through a connecting plate.

[0009] As a preferred technical solution of this utility model: the actuator includes a housing, a piston rod is provided inside the housing, and a sliding groove is provided on the piston rod. A limiting pin provided on the housing cooperates with the sliding groove to restrict the piston rod from rotating along the central axis of the housing.

[0010] As a preferred technical solution of this utility model: the groove is further provided with a ball bearing, and the ball bearing is limited in the groove by the limiting pin.

[0011] As a preferred technical solution of this utility model, a pad is also provided between the limiting pin and the ball.

[0012] The beneficial effects of this utility model by adopting the above technical solution are as follows: Since the air nozzle and valve core are set separately, when the air nozzle is subjected to external pressure, the air nozzle slides inside the valve seat, so that the air nozzle triggers the valve core to slide, thus completing the conduction of the air source; conversely, when the external force disappears, the air nozzle resets, at which time the air nozzle and valve core separate, and the valve core resets to complete the cut-off of the air source; the device uses the first spring and the second spring to complete the two-time closure of the medium channel, and the opening of the device relies entirely on the movement of the air nozzle, thus overcoming the phenomenon of easy medium leakage due to dependence on medium pressure. Attached Figure Description

[0013] Figure 1 This is an exploded view of the valve body of this utility model;

[0014] Figure 2 This is a cross-sectional structural diagram of the valve body of this utility model;

[0015] Figure 3 This is an exploded structural diagram of the air nozzle of this utility model;

[0016] Figure 4 This is a cross-sectional structural diagram of the mounting part of this utility model;

[0017] Figure 5 This is a cross-sectional structural diagram of the valve core of this utility model;

[0018] Figure 6 This is an exploded structural diagram of the actuator of this utility model;

[0019] Figure 7 This is a cross-sectional structural diagram of the actuator of this utility model;

[0020] Figure 8 This is an exploded structural diagram of the actuator and valve body.

[0021] In the diagram: 1. Valve body; 10. Outer shell; 11. Medium inlet; 12. Valve core; 13. First spring; 14. Valve seat; 15. Second spring; 16. Air nozzle; 17. Outer cover; 18. Sliding part; 19. Medium outlet; 110. Plug; 111. Push rod; 112. Mounting part; 113. Sealing gasket; 114. Pressure ring; 115. Mounting groove; 116. Through hole; 2. Connecting plate; 3. Actuator; 30. Housing; 31. Limit pin; 32. Slide groove; 33. Ball bearing; 34. Piston rod; 35. Gasket. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "upper surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model.

[0023] Please see Figure 1-8 This utility model provides an embodiment of a filling valve, including a valve body 1, the valve body 1 including a valve seat 14, one side of the valve seat 14 being provided with a housing 10, a valve core 12 and a first spring 13; the housing 10 is also provided with a medium inlet 11, and the housing 10 is connected to the valve seat 14 to assemble the valve core 12 and the first spring 13 into the valve seat 14; therefore, when the housing 10 is connected to the valve seat 14, when subjected to external force, the valve core 12 can slide in the valve seat 14, and after the external force disappears, the first spring 13 causes the valve core 12 to reset, completing the first closure of the medium channel;

[0024] Meanwhile, the other side of the valve seat 14 is also provided with a second spring 15, an air nozzle 16, and an outer cover 17. The outer cover 17 is connected to the valve seat 14 to assemble the air nozzle 16 and the second spring 15 into the valve seat 14. When one end of the air nozzle 16 is pressed against the mouth of the can to be filled, as the valve body 1 moves downward, the side of the air nozzle 16 away from the mouth of the can slide towards the valve core 12, and causes the valve core 12 to slide, completing the opening of the medium channel. After filling is completed, the compressed first spring 13 causes the valve core 12 to return to its original position; at the same time, the compressed second spring 15 causes the air nozzle 16 to return to its original position, completing the second closure of the medium channel.

[0025] Based on this, the device uses the first spring 13 and the second spring 15 to close the medium channel twice, while the opening of the device relies entirely on the movement of the air nozzle 16, thus overcoming the phenomenon of medium leakage that is prone to occur due to dependence on medium pressure.

[0026] Specifically, the valve core 12 includes a sliding part 18 that slides within the valve seat 14. The sliding part 18 is also provided with a plug 110, and a medium outlet 19 is provided between the sliding part 18 and the plug 110. Therefore, the plug 110 can be inserted into the medium channel to seal the medium channel and block the medium from flowing into the medium channel. In addition, the sliding part 18 is used to ensure the sliding of the valve core 12 within the valve seat 14.

[0027] Furthermore, the air nozzle 16 includes a mounting part 112. One end of the mounting part 112 slides within the valve seat 14 via a push rod 111. The push rod 111 has a through hole 116 inside. Therefore, when the air nozzle 16 is pressurized, it slides within the outer cover 17. At this time, the push rod 111 abuts against the plug 110, causing the valve core 12 to move towards the outer shell 10. The medium flows into the valve core 12 from the medium inlet 11 and then flows out from the medium outlet 19 of the valve core 12, and then flows into the tank to be filled along the through hole 116.

[0028] Furthermore, to ensure a good seal between the nozzle 16 and the opening of the tank to be filled, thereby reducing media leakage, the mounting part 112 is also provided with a mounting groove 115, and a sealing gasket 113 is provided in the mounting groove 115. A pressure ring 114 is connected to the mounting groove 115 to fix the sealing gasket 113 in the mounting groove 115. Specifically, the pressure ring 114 is connected to the internal thread in the mounting groove 115 by an external thread; in addition, by using the mounting part 112 to fit over the outside of the tank opening, it can be ensured that the tank will not tip over during the filling process.

[0029] To enable the valve body 1 to automatically press against the tank and automatically open the medium channel, the device is also equipped with an actuator 3, which is connected to the valve body 1 via a connecting plate 2. During filling, when the nozzle 16 is fitted onto the tank opening, the actuator 3 causes the valve body 1 to move downward, triggering the valve core 12 to open. Conversely, after filling is completed, the actuator 3 moves the valve body 1 to separate the nozzle 16 from the tank to be filled. This allows the tank and valve body 1 to be freely separated for easy movement or handling of the tank.

[0030] Furthermore, since the actuator 3 includes a housing 30, a piston rod 34 is provided inside the housing 30, and a sliding groove 32 is provided on the piston rod 34, and a limiting pin 31 provided on the housing 30 cooperates with the sliding groove 32 to restrict the piston rod 34 from rotating along the central axis of the housing 30. Therefore, the movement direction of the valve body 1 is stable and reliable, and in particular, it can avoid the problem that the valve body 1 will rotate with the piston rod 34 due to the rotation of the piston rod 34.

[0031] Furthermore, since the slide groove 32 is also provided with ball bearings 33, and the ball bearings 33 are limited in the slide groove 32 by the limiting pin 31, the ball bearings 33 can limit the axial rotation of the piston rod 34 while reducing the resistance of the piston rod 34 during movement.

[0032] In addition, a pad 35 is provided between the limiting pin 31 and the ball 33; wherein the pad 35 is preferably polytetrafluoroethylene, so while ensuring the normal rolling of the ball 33, the problem of deformation of the ball 33 caused by the limiting pin 31 squeezing the ball 33 can also be avoided.

[0033] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A filling valve, characterized in that: Includes a valve body (1), the valve body (1) includes a valve seat (14), one side of the valve seat (14) is provided with a housing (10), a valve core (12) and a first spring (13); The outer casing (10) is also provided with a medium inlet (11), which is connected to the valve seat (14) through the outer casing (10) to assemble the valve core (12) and the first spring (13) into the valve seat (14); The valve seat (14) is also provided with a second spring (15), an air nozzle (16), and an outer cover (17) on the other side. The outer cover (17) is connected to the valve seat (14) to assemble the air nozzle (16) and the second spring (15) into the valve seat (14).

2. A filling valve according to claim 1, characterized in that: The valve core (12) includes a sliding part (18) that slides within the valve seat (14), and a plug (110) is also provided on the sliding part (18), and a medium outlet (19) is provided between the sliding part (18) and the plug (110).

3. A filling valve according to claim 2, characterized in that: The air nozzle (16) includes a mounting part (112), one end of which slides in the valve seat (14) via a push rod (111), and the push rod (111) has a through hole (116) inside.

4. A filling valve according to claim 3, characterized in that: The mounting part (112) is also provided with a mounting groove (115), and a sealing gasket (113) is provided in the mounting groove (115). The sealing gasket (113) is fixed in the mounting groove (115) by a pressure ring (114).

5. A filling valve according to any one of claims 1-4, characterized in that: It also includes an actuator (3), which is connected to the valve body (1) via a connecting plate (2).

6. A filling valve according to claim 5, characterized in that: The actuator (3) includes a housing (30), a piston rod (34) is provided inside the housing (30), and a sliding groove (32) is provided on the piston rod (34). The piston rod (34) is connected to the sliding groove (32) by a limiting pin (31) provided on the housing (30) to restrict the piston rod (34) from rotating along the central axis of the housing (30).

7. A filling valve according to claim 6, characterized in that: The groove (32) is also provided with a ball (33), and the ball (33) is limited in the groove (32) by the limiting pin (31).

8. A filling valve according to claim 7, characterized in that: A pad (35) is also provided between the limiting pin (31) and the ball (33).

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