Improved inflation valve structure

Abstract

The utility model discloses an improved inflation valve structure which comprises a valve body shell, a valve rod and a fixing sleeve, the fixing sleeve is fixedly arranged on one side of the interior of the valve body shell, a spring is connected to a gap between the fixing sleeve and the valve body shell in an embedded mode, a spacer sleeve is arranged at the end of the valve body shell, and the spacer sleeve is connected with the valve rod. The valve rod is sequentially connected with the valve body shell and the fixing sleeve in an embedded mode, the bottom of the valve rod is connected with a circular-truncated-cone-shaped sealing plug in an embedded mode, and the circular-truncated-cone-shaped sealing plug abuts against the inner wall of the valve body shell. According to the inflation valve, the circular-truncated-cone-shaped sealing plug is arranged to replace a traditional plastic sealing sleeve, the valve rod and the circular-truncated-cone-shaped sealing plug are pressed and fixed through the annular pressing block and the annular pressing groove, the circular-truncated-cone-shaped sealing plug can be limited, and the sealing performance of the inflation valve is effectively improved.

Description

Technical Field

[0001] This utility model relates to an improved inflation valve structure and belongs to the field of inflation valve technology. Background Technology

[0002] The working principle of an inflation valve is based on the pressure difference principle in gas mechanics. When a pressure difference exists across the valve, gas will flow from the high-pressure side to the low-pressure side. By changing the valve opening, the inflation valve can control the gas flow rate and pressure. Simultaneously, the gas flow within the inflation valve falls under the category of fluid mechanics; gas flow generates resistance, the magnitude of which is related to factors such as gas velocity, pipe diameter, and valve opening. Furthermore, during operation, heat exchange occurs as gas flows through the valve; therefore, the design of the inflation valve must also consider thermodynamic principles to minimize energy loss during gas flow.

[0003] The current structure of the inflation valve is as follows: Figure 6 As shown, it mainly consists of a valve body shell, valve stem, spring and retaining sleeve. The connection between the valve stem and the valve body shell is traditionally sealed by fitting a plastic sleeve, which has poor sealing performance. At the same time, the design of the plastic sleeve without a positioning structure further affects the sealing performance of the connection. Therefore, we designed an improved air-filling valve structure to solve the above technical problems. Utility Model Content

[0004] The purpose of this invention is to provide an improved inflation valve structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: it includes a valve body shell, a valve stem, and a fixing sleeve. The fixing sleeve is fixedly provided on one side inside the valve body shell. A spring is nested and connected at the gap between the fixing sleeve and the valve body shell. A retaining sleeve is provided at the end of the valve body shell. The valve stem is nested and connected to the valve body shell and the fixing sleeve in sequence. A frustum-shaped sealing plug is nested and connected to the bottom of the valve stem. The frustum-shaped sealing plug abuts against the inner wall of the valve body shell.

[0006] In the above-mentioned improved inflation valve structure, the valve stem is T-shaped, and an annular pressure groove is provided at the bottom of the valve stem. The bottom of the frustum-shaped sealing plug is provided with an annular pressure block that matches the annular pressure groove, and the annular pressure block is nested inside the annular pressure groove.

[0007] In the above-mentioned improved inflation valve structure, a retaining ring is fixedly provided inside the retaining sleeve, and a snap-fit ​​is provided on one side of the inner wall of the retaining ring. One end of the spring is engaged with the snap-fit, and the inner edge of the retaining ring is embedded in the annular groove.

[0008] In the above-described improved inflation valve structure, the frustum-shaped sealing plug is a rubber sealing plug.

[0009] In the above-mentioned improved inflation valve structure, a fixing hole is provided on one side of the fixing sleeve, and the other end of the spring is inserted and connected to the fixing hole.

[0010] In the above-described improved inflation valve structure, the outer diameter of the spring is adapted to the inner diameter at the end of the valve body shell, and the inner diameter of the spring is adapted to the outer diameter of the fixing sleeve.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the inflation valve replaces the traditional plastic sealing sleeve by setting a frustum-shaped sealing plug, and the valve stem and the frustum-shaped sealing plug are fixed by an annular pressure block and an annular pressure groove, which can limit the position of the frustum-shaped sealing plug and effectively improve the sealing performance of the inflation valve. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the improved inflation valve of this utility model;

[0013] Figure 2 This is a schematic diagram of the unfolded structure of the improved air valve structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the connection structure between the valve stem and the frustum-shaped sealing plug in the improved inflation valve structure of this utility model.

[0015] Figure 4 This is a schematic diagram of the front structure of the retaining sleeve of the improved inflation valve structure of this utility model;

[0016] Figure 5 This is a schematic diagram of the cross-sectional structure of the retaining ring in the improved inflation valve structure of this utility model;

[0017] Figure 6 This is a cross-sectional structural diagram of the conventional air-filling valve structure of this utility model.

[0018] In the diagram: 1. Valve body shell; 2. Valve stem; 3. Frustum-shaped sealing plug; 4. Fixing sleeve; 5. Spring; 6. Retaining sleeve; 7. Annular groove; 8. Annular block; 9. Retaining ring; 10. Bayonet; 11. Annular snap groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-5This utility model provides a technical solution for an improved inflation valve structure:

[0021] according to Figure 1-5 As shown, the valve includes a valve body shell 1, a valve stem 2, and a fixing sleeve 4. The fixing sleeve 4 is fixedly installed on one side inside the valve body shell 1. A spring 5 is nested and connected to the gap between the fixing sleeve 4 and the valve body shell 1. A retaining sleeve 6 is provided at the end of the valve body shell 1. The valve stem 2 is nested and connected to the valve body shell 1 and the fixing sleeve 4 in sequence. A frustum-shaped sealing plug 3 is nested and connected to the bottom of the valve stem 2. The frustum-shaped sealing plug 3 abuts against the inner wall of the valve body shell 1.

[0022] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this utility model provides a technical solution for an improved inflation valve structure. The valve stem 2 is T-shaped, and an annular pressure groove 7 is provided at the bottom of the valve stem 2. The bottom of the frustum-shaped sealing plug 3 is provided with an annular pressure block 8 that is compatible with the annular pressure groove 7. The annular pressure block 8 is nested inside the annular pressure groove 7.

[0023] Specifically, the inflation valve replaces the traditional plastic sealing sleeve with a frustum-shaped sealing plug 3, and the valve stem 2 and the frustum-shaped sealing plug 3 are pressed and fixed by an annular pressure block 8 and an annular pressure groove 7, which can limit the position of the frustum-shaped sealing plug 3 and effectively improve the sealing performance of the inflation valve.

[0024] The retaining sleeve 6 has a retaining ring 9 fixed inside. A snap 10 is opened on one side of the inner wall of the retaining ring 9. One end of the spring 5 is engaged with the snap 10. The inner edge of the retaining ring 9 is embedded in the annular groove 11.

[0025] Specifically, the top of the spring 5 can be fixed through the bayonet 10.

[0026] The frustum-shaped sealing plug 3 is a rubber sealing plug.

[0027] Specifically, the rubber sealing plug has a certain elasticity, which allows it to tightly contact the inner wall of the valve body shell 1, thereby improving the sealing performance of the connection between the valve stem 2 and the valve body shell 1.

[0028] A fixing hole is provided on one side of the fixing sleeve 4, and the other end of the spring 5 is inserted and connected to the fixing hole.

[0029] Specifically, the bottom of the spring 5 can be fixed through the fixing hole opened on one side of the fixing sleeve 4.

[0030] The outer diameter of the spring 5 is matched with the inner diameter at the end of the valve body housing 1, and the inner diameter of the spring 5 is matched with the outer diameter of the fixing sleeve 4.

[0031] Specifically, by limiting the inner and outer diameters of spring 5, the gap at the nesting point of spring 5 is reduced, thereby improving the stability of spring 5.

[0032] Working principle: The improved inflation valve structure of this utility model, when assembling the inflation valve, firstly, the frustum-shaped sealing plug 3 is nested in the bottom of the valve stem 2, and the annular pressure block 8 at the bottom of the frustum-shaped sealing plug 3 is pressed and fixed with the annular pressure groove 7 at the bottom of the valve stem 2. Next, the valve stem 2 is passed through the valve body shell 1 and the fixing sleeve 4 in sequence. Then, the spring 5 is nested in the gap formed between the fixing sleeve 4 and the valve body shell 1, and the bottom of the spring 5 is fixed with the fixing hole on the surface of the fixing sleeve 4. Next, the retaining sleeve 6 is nested and fixed with the end of the valve stem 2, and the other end of the spring 5 is fixed with the snap 10 at the retaining ring 9 on the inner wall of the retaining sleeve 6. The assembly of the inflation valve is completed. During use, the frustum-shaped sealing plug 3 replaces the traditional plastic sealing sleeve, effectively improving the sealing performance of the inflation valve.

[0033] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this 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 this invention or exceeding the scope defined by the appended claims.

Claims

1. An improved inflation valve structure, comprising a valve body shell (1), a valve stem (2), and a fixing sleeve (4), characterized in that, A fixing sleeve (4) is fixedly provided on one side inside the valve body shell (1). A spring (5) is nested and connected to the gap between the fixing sleeve (4) and the valve body shell (1). A retaining sleeve (6) is provided at the end of the valve body shell (1). The valve stem (2) is nested and connected to the valve body shell (1) and the fixing sleeve (4) in sequence. A frustum-shaped sealing plug (3) is nested and connected to the bottom of the valve stem (2). The frustum-shaped sealing plug (3) abuts against the inner wall of the valve body shell (1).

2. The improved inflation valve structure according to claim 1, characterized in that: The valve stem (2) is T-shaped, and an annular pressure groove (7) is provided at the bottom of the valve stem (2). The bottom of the frustum-shaped sealing plug (3) is provided with an annular pressure block (8) that is compatible with the annular pressure groove (7). The annular pressure block (8) is nested inside the annular pressure groove (7).

3. The improved inflation valve structure according to claim 1, characterized in that: The retaining sleeve (6) is fixedly provided with a retaining ring (9), and a slot (10) is provided on one side of the inner wall of the retaining ring (9). One end of the spring (5) is engaged with the slot (10), and the inner edge of the retaining ring (9) is embedded in the annular groove (11).

4. The improved inflation valve structure according to claim 2, characterized in that: The frustum-shaped sealing plug (3) is a rubber sealing plug.

5. The improved inflation valve structure according to claim 1, characterized in that: The fixing sleeve (4) has a fixing hole on one side, and the other end of the spring (5) is inserted into the fixing hole.

6. The improved inflation valve structure according to claim 4, characterized in that: The outer diameter of the spring (5) is adapted to the inner diameter at the end of the valve body housing (1), and the inner diameter of the spring (5) is adapted to the outer diameter of the fixing sleeve (4).

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