Valve inflating and deflating device

Abstract

The utility model provides a valve inflating and deflating device, and belongs to the field of valve inflating and deflating. The valve inflating and deflating device comprises an ejector rod; a first channel is formed in the base; a second channel is formed in the connector, and the connector is fixedly connected with the base in a sealed mode, so that the first channel is communicated with the second channel; the ejector rod is located in the first channel and the second channel and can slide in the first channel and the second channel in the axial direction. The front end of the ejector rod extends out of the open end of the connector, and the rear end of the ejector rod and the base are sealed. A gas flow channel is arranged between the ejector rod and the connector and extends to the opening end of the connector. The base and / or the connector are / is provided with air holes, and the air holes are communicated with the air flow channel. The valve inflating and deflating device is small in machining difficulty and low in machining cost.

Description

Technical Field

[0001] The utility model belongs to the field of valve charging and discharging, and particularly relates to a valve charging and discharging device. Background Art

[0002] An inflation valve is a valve used for inflating or deflating, and plays a crucial role in different industries. The function of the inflation valve is to control the entry or exit of gas into or from an inflatable product. Common inflation valves need to lift the inflation valve spool during inflation and deflation to achieve the inflation and deflation functions.

[0003] For existing charging and discharging devices, if the ejector rod is short, it cannot penetrate deep into the inflation valve, easily causing air leakage and other phenomena. Therefore, the length of the ejector rod is generally long. However, a long ejector rod will lead to difficulties in machining the base and an increase in cost. Summary of the Utility Model

[0004] Aiming at the above deficiencies in the prior art, the utility model provides a valve charging and discharging device to solve the problems of difficult machining of components and high machining cost of the valve charging and discharging device with a long ejector rod in the prior art.

[0005] To solve the above technical problems, the present application provides a valve charging and discharging device, including:

[0006] An ejector rod;

[0007] A base, with a first channel formed inside; and

[0008] A joint, with a second channel formed inside. The joint is fixedly connected to the base in a sealed manner, such that the first channel is in communication with the second channel;

[0009] The ejector rod is located inside the first channel and the second channel, and the ejector rod can slide axially inside the first channel and the second channel; the front end of the ejector rod extends out of the open end of the joint, and the rear end of the ejector rod is sealed with the base;

[0010] A gas flow channel is provided between the ejector rod and the joint, and the gas flow channel extends to the open end of the joint;

[0011] Air holes are provided on the base and / or the joint, and the air holes are in communication with the gas flow channel.

[0012] According to some embodiments of the present application, the joint and the base are fixedly connected in a sealed manner by welding.

[0013] According to some embodiments of the present application, a sealing member is fixedly provided inside the base, and the rear end of the ejector rod is sealed with the base through the sealing member.

[0014] Preferably, the sealing member includes an O-ring.

[0015] According to some embodiments of the present application, a jacket nut is also sleeved on the joint.

[0016] Furthermore, a limiting block is fixed on the joint, and the limiting block confines the jacket nut on the joint.

[0017] According to some embodiments of the present application, the diameter of the front end is smaller than that of the rear end.

[0018] According to some embodiments of the present application, the valve charging and discharging device further includes a push rod and a gland sleeved on the push rod. The push rod is movably connected to the gland, and the gland is connected to the base;

[0019] The push rod is movably connected to the ejector rod and is used to push the ejector rod to slide in the first channel and the second channel.

[0020] Furthermore, the push rod has a D-shaped card slot, and the rear end of the ejector rod has a stepped head, and the stepped head is snapped into the D-shaped card slot;

[0021] A first fixing member is provided on the base for fixing the gland on the base.

[0022] According to some embodiments of the present application, a nozzle communicating with the air hole is provided on the base and / or the joint.

[0023] The beneficial effects of the present utility model compared with the prior art are as follows:

[0024] (1) The valve charging and discharging device provided by the present utility model disassembles the base of the existing valve charging and discharging device into a base and a joint and processes them separately, and then uses a welding connection method to connect the processed base and joint together, reducing the processing difficulty and processing cost of each component;

[0025] (2) A jacket nut is provided with a limit on the joint of the valve charging and discharging device provided by the present utility model. Only by changing the jacket nut before welding the base and the joint, the joint can be used for other different types of valve interfaces;

[0026] (3) The gas flow channel of the valve charging and discharging device provided by the present utility model adopts an annular flow channel design, reducing the charging and discharging resistance and increasing the gas discharge speed;

[0027] (4) The ejector rod of the valve charging and discharging device provided by the present utility model is connected to the propulsion component of the ejector rod through a structure similar to a dovetail joint. The connection method is reliable and the coaxiality requirement for parts is low. Description of the Drawings

[0028] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the attached drawings required for the description of the embodiments will be briefly introduced below. Obviously, the attached drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained based on these attached drawings.

[0029] Figure 1 It is a schematic structural diagram of the valve charging and discharging device provided by the embodiment of the present utility model;

[0030] Figure 2 is Figure 1 a schematic structural diagram of the ejector rod and the joint in

[0031] Figure 3 is Figure 1 a schematic structural diagram of the quasi-dovetail tenon structure in

[0032] Figure 4 is Figure 3 a side view of the quasi-dovetail tenon structure in

[0033] The reference numerals in the figure are as follows:

[0034] 1, base; 11, first channel; 12, seal; 13, first fixing member; 14, inlet end;

[0035] 2, joint; 21, second channel; 211, opening; 22, open end; 23, limiting block;

[0036] 3, ejector rod; 31, step head; 32, gas flow channel; 33, rear end; 34, middle end; 35, front end;

[0037] 4, pusher; 40, D-shaped clamping groove; 41, push rod; 42, gland; 43, handle; 44, second fixing member;

[0038] 5, air hole;

[0039] 6, outer sleeve nut; 61, nozzle. Detailed implementation manners

[0040] The following description provides specific application scenarios and requirements of this specification, aiming to enable those skilled in the art to manufacture and use the content in this specification. For those skilled in the art, various local modifications to the disclosed embodiments are obvious, and the general principles defined here can be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the disclosed embodiments, but has the broadest scope consistent with the claims.

[0041] The terms used herein are for the purpose of describing particular example embodiments only and are not limiting. For example, unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. When used in this specification, the terms "comprises", "comprising", and / or "having" mean that the associated integers, steps, operations, elements, and / or components are present, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups.

[0042] In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements, or components must have a specific orientation or be constructed and operated in a specific orientation.

[0043] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances.

[0044] In addition, the terms "mounted", "set", "provided with", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there is internal communication between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0045] In view of the following description, these features of this specification and other features, as well as the operations and functions of the related elements of the structure, and the economy of the combination and manufacture of the components can be significantly improved. Referring to the drawings, all of these form a part of this specification. However, it should be clearly understood that the drawings are only for the purpose of illustration and description and are not intended to limit the scope of this specification. It should also be understood that the drawings are not drawn to scale.

[0046] An inflation valve is a valve used for inflation or deflation and plays a crucial role in different industries. The function of the inflation valve is to control the entry or exit of gas into or from an inflatable product. Common inflation valves need to lift the inflation valve spool when inflating or deflating to achieve the inflation and deflation functions.

[0047] In the existing gas charging and discharging device, if the ejector rod is short, it cannot penetrate deep into the inflation valve, which is likely to cause air leakage and other phenomena. Therefore, the length of the ejector rod is generally long. However, a long ejector rod will lead to difficulties in processing the base and an increase in cost.

[0048] In view of this, the embodiment of the present utility model provides a valve gas charging and discharging device, which can reduce the processing difficulty and cost of components of the valve gas charging and discharging device with a long ejector rod.

[0049] The following is a detailed description of the valve gas charging and discharging device through specific embodiments:

[0050] As Figure 1 shown, it is a schematic structural diagram of the valve gas charging and discharging device. The device includes a base 1, a joint 2, and a cylindrical ejector rod 3. The interior of the base 1 is hollow and forms a cylindrical first channel 11, and the interior of the joint 2 is hollow and forms a cylindrical second channel 21. The diameters of the first channel 11 and the second channel 21 are slightly larger than the maximum diameter of the ejector rod 3, so as to facilitate the sliding of the ejector rod 3 in the first channel 11 and the second channel 21.

[0051] It should be noted that the base 1 and the joint 2 are processed separately, which can improve the processing efficiency and can perform fine processing on the base 1 and the joint 2 according to the requirements of different usage environments. After the base 1 and the joint 2 are processed, they are connected together by welding. The welding connection method can provide good protection at the joint seam and avoid air leakage caused by pores at the connection. At the same time, the first channel 11 and the second channel 21 are also connected together with the welding and fixing of the base 1 and the joint 2. In another embodiment, the base 1 and the joint 2 can also be connected by a flange to achieve the sealed and fixed connection of the joint 2 and the base 1.

[0052] As Figure 2 shown, the ejector rod 3 can slide in the connected first channel 11 and second channel 21. The front end 35 of the ejector rod 3 extends out of the opening end 22 of the joint 2, and the rear end 33 of the ejector rod 3 is sealed with the base 1. A gas flow channel 32 is provided between the ejector rod 3 and the joint 2. The gas flow channel 32 extends to the opening end 22 of the joint 2. The flow path of the gas flow channel 32 is simple, the gas flow is smooth, and the resistance is small. When the ejector rod 3 extends out of the opening end 22 of the joint 2 and pushes open the valve core, the gas flow channel 32 is communicated with the opening 211 of the second channel 21 and the internal air channel of the valve to realize the gas charging and discharging operation of the valve.

[0053] There are various sealing methods between the rear end 33 of the ejector rod 3 and the base 1. For example, spiral grooves can be processed on the ejector rod 3 or on the inner wall of the base 1, and the two form a spiral seal. Another example is, as Figure 1As shown in the figure, a seal 12 is fixed inside the base 1. The seal 12 can cooperate with the ejector rod 3 to close the first channel 11. Moreover, an air hole 5 communicating with the outside is provided on the base 1, and the air hole 5 is also communicated with the gas flow channel 32. When the ejector rod 3 pushes open the valve core of the valve, the gas flow channel 32 is communicated with the air passage inside the valve and is simultaneously communicated with the outside through the air hole 5.

[0054] The seal 12 can be a soft packing (such as graphite packing, aramid packing, PTFE packing, etc.) filled between the ejector rod 3 and the base 1. In this embodiment, as Figure 1 shown, the seal 12 is an O-ring, and three are provided inside the base 1 to prevent gas from leaking from the first channel 11 and improve the sealing performance of the device.

[0055] It should be noted that in this embodiment, the O-ring is made of a low-temperature resistant material. Therefore, even in the face of a low-temperature environment, the device can still be used normally.

[0056] Due to the differences in the objects to be inflated, the morphological structures of the valves are also various. In order to match different valve interfaces, a corresponding outer sleeve nut 6 is sleeved during the processing of the joint 2. At the same time, a limiting block 23 is provided at the end of the joint 2 to prevent the outer sleeve nut 6 from detaching from the joint 2. The shape of the outer sleeve nut 6 can match the shape of the valve and is connected to the valve through threads.

[0057] As Figure 1 and Figure 2 shown, the ejector rod 3 has a rear end 33, a middle end 34, and a front end 35. The rear end 33 can cooperate with the seal 12 to seal the device, and the front end 35 extends out of the opening end 22 of the joint 2. The diameters of the front end 35, the middle end 34, and the rear end 33 decrease in sequence. The smaller diameter of the front end 35 can increase the flow rate of the gas flow channel 32 and improve the charging and discharging efficiency, while the larger diameter of the rear end 33 is convenient for cooperating with the seal 12 to improve the sealing effect.

[0058] To facilitate the control of the sliding of the ejector rod 3, as Figure 2 shown, a pushing member 4 is provided at the end of the ejector rod 3. The pushing member 4 is connected to the ejector rod 3, which is convenient for mechanical or manual operation to move the ejector rod 3 in the first channel 11 and the second channel 21.

[0059] The pushing member 4 includes a push rod 41. There are various connection methods between the push rod 41 and the ejector rod 3. For example, the ejector rod 3 and the push rod 41 can be integrally formed and the ejector rod 3 is fixed on the push rod 41. Another example is that the pushing member 4 and the ejector rod 3 can be connected by a hinge. Another example is that, as Figure 3 and Figure 4 shown, the push rod 41 and the ejector rod 3 are connected in a quasi-dovetail tenon structure. In this embodiment, as Figure 1 and Figure 3As shown in the figure, a D-shaped card slot 40 is provided on the push rod 41, and a stepped head 31 is provided on the ejector rod 3. The stepped head 31 is clamped into the D-shaped card slot 40 to connect the push rod 41 and the ejector rod 3. This connection method is reliable and has low coaxiality requirements for parts.

[0060] To facilitate the control of the movement process of the ejector rod 3, a gland 42 is sleeved outside the push rod 41. The push rod 41 is movably connected to the gland 42, and the gland 42 is movably connected to the base 1. It can be understood that in order to improve the controllability of the movement process of the ejector rod 3 in the base 1, the gland 42 and the base 1 can be connected through a gear system. Similarly, the gland 42 and the base 1 can also be connected through a connecting rod structure, which will not be described in detail here. As Figure 1 shown in the figure, the gland 42 and the base 1 are connected by threads, so that the sliding of the ejector rod 3 in the base 1 can be controlled by screwing the gland 42 into the base 1. Specifically, the movement process of the ejector rod 3 is controlled by controlling the thread pitch.

[0061] Since the structure of the inlet end 14 of the base 1 can be processed and modified, in order to adapt to the structural shapes of different inlet ends 14 of the base 1, the gland 42 can thus select the corresponding structure according to the structures of different inlet ends 14 of the base 1. The assembly formed by the push rod 41 and the gland 42 is movably connected to the base 1, with a simple structure and convenient disassembly. As Figure 1 shown in the figure, for easy installation and replacement, the gland 42 is threadedly connected to the push rod 41, and the length of the gland 42 is longer than the length of the inlet end 14 of the base 1, so the pushing distance of the ejector rod 3 can be increased.

[0062] Furthermore, as Figure 1 shown in the figure, a first fixing member 13 is further provided on the base 1, which can fix the gland 42 to prevent the push rod 41 and the gland 42 from rotating together, thereby improving the rotation efficiency of the push rod 41. The first fixing member 13 selects a screw, and the gland 42 is locked by the screw.

[0063] To facilitate holding, a handle 43 is provided at the end of the push rod 41, and the handle 43 is fixed to the push rod 41 through a second fixing member 44. As Figure 1 shown in the figure, the second fixing member 44 is a nut, and the handle 43 is locked to the push rod 41 through the nut. After the device of this embodiment is assembled, the open end 22 of the joint 2 faces the valve, the valve is connected, the handle 43 is rotated to make the ejector rod 3 push open the valve spool, and the rotation of the handle 43 is stopped after reaching the maximum stroke. The gas flows from the air hole 5 through the annular gas flow channel 32 to the valve to complete gas transmission.

[0064] During the deflation process, the ejector rod 3 is used to push open the valve core so that the gas inside the valve can be discharged through the gas flow channel 32. During the inflation process, an air pump is needed to pump external gas into the object to be inflated. At this time, a connecting device needs to be set up to facilitate the connection between the valve charging and discharging device provided in this embodiment and the air pump. As Figure 1 shown, a nozzle 61 is provided at the air hole 5. The nozzle 61 is communicated with the gas flow channel 32 through the air hole 5. The nozzle 61 is welded to the base 1. The setting of the nozzle 61 facilitates the connection between the air pump and the valve charging and discharging device provided in this embodiment.

[0065] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A valve charging and discharging device, characterized in that, Comprising: Ejector rod; Base, with a first channel formed inside; And Connector, with a second channel formed inside, the connector is fixedly and sealingly connected to the base, such that the first channel communicates with the second channel; The ejector rod is located inside the first channel and the second channel, and the ejector rod can slide axially inside the first channel and the second channel; the front end of the ejector rod extends out of the open end of the connector, and there is a seal between the rear end of the ejector rod and the base; A gas flow channel is provided between the ejector rod and the connector, and the gas flow channel extends to the open end of the connector; Air holes are provided on the base and / or the connector, and the air holes communicate with the gas flow channel.

2. The valve charging and discharging device according to claim 1, characterized in that The connector and the base are fixedly and sealingly connected by welding.

3. The valve charging and discharging device according to claim 1, characterized in that, A seal is fixedly provided inside the base, and the rear end of the ejector rod and the base are sealed by the seal.

4. The valve charging and discharging device according to claim 3, characterized in that The seal includes an O-ring.

5. The valve charging and discharging device according to claim 1, wherein, An outer sleeve nut is also sleeved on the connector.

6. The valve charging and discharging device according to claim 5, characterized in that, A limit block is fixed on the connector, and the limit block confines the outer sleeve nut on the connector.

7. The valve charging and discharging device according to claim 1, characterized in that, The diameter of the front end is smaller than that of the rear end.

8. The valve charging and discharging device according to claim 1, characterized in that, The valve charging and discharging device further includes a push rod and a gland sleeved on the push rod, the push rod is movably connected to the gland, and the gland is connected to the base; The push rod is movably connected to the ejector rod to facilitate pushing the ejector rod to slide inside the first channel and the second channel.

9. The valve charging and discharging device according to claim 8, wherein, The push rod has a D-shaped card slot, the rear end of the ejector rod has a stepped head, and the stepped head is snapped into the D-shaped card slot; a first fixing member is provided on the base for fixing the gland on the base.

10. The valve charging and discharging device according to claim 1, characterized in that, A pipe nozzle communicating with the air hole is provided on the base and / or the connector.

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