Spring assembly structure of gun valve body

Abstract

The utility model provides a spring assembly structure of a gun valve body, and belongs to the technical field of cleaning machines. The problem that an existing spring is poor in assembling convenience in a valve body is solved. The spring assembling structure of the gun valve body comprises a gun shell and a valve body arranged in the gun shell, a valve seat, a ball and a spring are arranged in the valve body, the inner wall of the valve body is provided with a step face, the lower end of the spring abuts against the step face, the upper end of the spring abuts against the ball, the inner wall of the valve body is provided with a conical cavity, the conical cavity is located below the spring, and the conical cavity is provided with a conical face. The upper end of the conical face extends to the step face, and the inner diameter of an upper port of the conical cavity is smaller than that of a lower port of the conical cavity. According to the structure, the number of parts is reduced, the manufacturing cost is reduced, the conical face is arranged on the inner wall of the valve body to play a role in guiding installation of the spring from bottom to top, the spring can be assembled to the position above the conical cavity due to the fact that the spring can deform, and the convenience of spring assembly is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of cleaning machine spray gun, and particularly relates to a spring assembly structure of a gun valve body. BACKGROUND

[0002] The high-pressure cleaning machine is used for generating high-pressure water through a power device, and the high-pressure water is sprayed through a spray gun. When the impact force of water is greater than the adhesion of dirt and the surface of an object, the dirt on the surface of the object can be washed away, so that the surface of the object is cleaned. The three-way valve on the high-pressure spray gun of the traditional cleaning machine comprises a valve body, a top rod, a steel ball and a spring arranged in the valve body, and one end of the valve body is connected with a rubber tube.

[0003] For example, the Chinese patent network discloses a kind of external high-pressure water gun three-way valve

authorized publication number: CN202746659U

[0004] The above-mentioned three-way valve has the following defects: the spring seat is screwed in the valve body, thereby ensuring that the spring is limited in the valve body. This structure is equivalent to adding an additional component in the valve body to ensure the installation of the spring. On the one hand, it increases the manufacturing cost of the three-way valve. On the other hand, special tools are needed to rotate the spring seat to screw it with the valve body. The operation is relatively complex and cumbersome, and the operation convenience of the spring assembly in the valve body is poor. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above-mentioned problems existing in the prior art, and provides a spring assembly structure of a gun valve body. The technical problem to be solved by the utility model is how to improve the convenience of spring assembly in the valve body.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] A spring assembly structure of a gun valve body, comprising a gun shell and a valve body arranged in the gun shell, a valve seat, a ball and a spring are arranged in the valve body, a stepped surface is formed on the inner wall of the valve body, the lower end of the spring abuts against the stepped surface, and the upper end of the spring abuts against the ball, characterized in that the inner wall of the valve body has a conical cavity, the conical cavity is located below the spring, the conical cavity has a conical surface, the upper end of the conical surface extends to the stepped surface, and the inner diameter of the upper port of the conical cavity is smaller than the inner diameter of the lower port of the conical cavity.

[0008] The spring is installed from bottom to top in the valve body, during the spring installation process, the upper part of the spring passes through the upper port of the conical cavity, the lower end of the spring is in contact with the conical surface, the conical surface plays a guiding role for the upward installation of the spring, the lower end of the spring moves upward along the conical surface, the lower end of the spring gradually deforms until the lower end of the spring moves to the upper side of the conical cavity, when the spring moves to the upper side of the conical cavity, the lower end of the spring restores the initial shape under the action of its own elasticity, so that the lower end of the spring abuts against the step surface, and the spring is assembled in the valve body. Compared with the prior art, the structure cancels the setting of the spring seat in the valve body, reduces the parts, and reduces the manufacturing cost, the structure sets the conical surface on the inner wall of the valve body to play a guiding role for the upward installation of the spring from bottom to top, the spring can be assembled to the upper side of the conical cavity by using the deformation of the spring itself, and the convenience of spring assembly is improved.

[0009] In the spring assembly structure of the gun valve body, the outer diameter of the upper end of the spring is smaller than the inner diameter of the upper port of the conical cavity, and the outer diameter of the lower end of the spring is greater than the inner diameter of the upper port of the conical cavity. The outer diameter of the lower end of the spring is greater than the outer diameter of the upper end of the spring, that is, the outer diameters of the upper and lower ends of the spring are not consistent, the outer diameter of the upper end of the spring is smaller than the inner diameter of the upper port of the conical cavity, so that the upper end of the spring can smoothly pass through the upper port of the conical cavity, the outer diameter of the lower end of the spring is greater than the inner diameter of the upper port of the conical cavity, so that the spring passes through the upper port of the conical cavity after a certain deformation, and then the lower end of the spring abuts against the step surface when the spring restores the original state.

[0010] In the spring assembly structure of the gun valve body, the inner diameter of the lower port of the conical cavity is greater than the outer diameter of the lower end of the spring. This structure ensures that the entire spring can pass through the conical cavity.

[0011] In the spring assembly structure of the gun valve body, the valve body has an installation cavity, the installation cavity is located below the conical cavity, and the minimum inner diameter of the installation cavity is greater than the maximum outer diameter of the spring. This structure ensures that the spring can pass through the installation cavity, that is, the spring can be assembled from bottom to top in the valve body.

[0012] In the aforementioned spring assembly structure of a gun valve body, the valve body has a spring cavity located above a conical cavity. The spring is disposed within the spring cavity, which includes an upper cavity, a guide cavity, and a lower cavity. The inner diameter of the upper cavity is smaller than that of the lower cavity. The guide cavity is conical, and the lower end of the spring is located within the lower cavity. Because the outer diameter of the spring is not constant from top to bottom (the outer diameter of the lower end is larger than that of the upper end), the inner diameter of the upper cavity matches the outer diameter of the upper part of the spring, thus limiting the horizontal offset of the upper part of the spring. Similarly, the inner diameter of the lower cavity matches the outer diameter of the lower end of the spring, thus limiting the horizontal offset of the lower end of the spring and ensuring the stability of the entire spring after installation. The guide cavity guides the assembly of the spring from bottom to top, ensuring that the upper part of the spring can be accurately inserted into the upper cavity.

[0013] Compared with the prior art, the spring assembly structure of the gun valve body of this utility model has the following advantages: This structure eliminates the setting of the spring seat in the valve body, reduces the number of parts, and lowers the manufacturing cost. This structure sets a conical surface on the inner wall of the valve body to guide the installation of the spring from bottom to top. The spring itself can deform to allow the spring to be assembled on the top of the conical cavity, improving the convenience of spring assembly. Attached Figure Description

[0014] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0015] Figure 2 yes Figure 1 A magnified structural diagram of part A in the middle.

[0016] Figure 3 This is a cross-sectional structural diagram of the valve body of this utility model.

[0017] In the diagram, 1 is the gun casing; 2 is the valve body; 3 is the stepped surface; 4 is the valve seat; 5 is the ball bearing; 6 is the spring; 7 is the conical cavity; 70 is the conical surface; 71 is the upper port; 72 is the lower port; 8 is the mounting cavity; 9 is the spring cavity; 90 is the upper cavity; 91 is the guide cavity; and 92 is the lower cavity. Detailed Implementation

[0018] 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.

[0019] like Figure 1 , Figure 2 and Figure 3As shown, the spring assembly structure of this gun valve body includes a gun housing 1 and a valve body 2 disposed inside the gun housing 1. The valve body 2 is provided with a valve seat 4, a ball bearing 5 and a spring 6. The inner wall of the valve body 2 has a stepped surface 3. The lower end of the spring 6 abuts against the stepped surface 3 and the upper end abuts against the ball bearing 5. The inner wall of the valve body 2 has a conical cavity 7 located below the spring 6. The conical cavity 7 has a conical surface 70. The upper end of the conical surface 70 extends to the stepped surface 3. The inner diameter of the upper port 71 of the conical cavity 7 is smaller than the inner diameter of the lower port 72 of the conical cavity 7. The outer diameter of the upper end of the spring 6 is smaller than the inner diameter of the upper port 71 of the conical cavity 7. The outer diameter of the lower end of the spring 6 is larger than the inner diameter of the upper port 71 of the conical cavity 7. The inner diameter of the lower port 72 of the conical cavity 7 is larger than the outer diameter of the lower end of the spring 6. Spring 6 is installed into valve body 2 from bottom to top. During installation, the upper part of spring 6 passes through the upper port 71 of conical cavity 7, and the lower end of spring 6 contacts conical surface 70. Conical surface 70 guides the upward installation of spring 6. The lower end of spring 6 moves upward along conical surface 70, gradually deforming until it reaches the top of conical cavity 7. Once the lower end of spring 6 reaches the top of conical cavity 7, it returns to its initial shape under its own elasticity, allowing it to rest against step surface 3, thus assembling spring 6 within valve body 2. Compared with existing technologies, this structure eliminates the need for a spring seat within valve body 2, reducing the number of parts and manufacturing costs. This structure uses conical surface 70 on the inner wall of valve body 2 to guide the installation of spring 6 from bottom to top, and utilizes the deformation capability of spring 6 to assemble it into the top of conical cavity 7, improving the ease of spring 6 assembly.

[0020] like Figure 1 , Figure 2 and Figure 3As shown, the valve body 2 has a mounting cavity 8 located below the conical cavity 7. The minimum inner diameter of the mounting cavity 8 is greater than the maximum outer diameter of the spring 6. This structure ensures that the spring 6 can pass through the mounting cavity 8, that is, that the spring 6 can be assembled into the valve body 2 from bottom to top. The valve body 2 also has a spring cavity 9 located above the conical cavity 7. The spring 6 is disposed in the spring cavity 9. The spring cavity 9 includes an upper cavity 90, a guide cavity 91, and a lower cavity 92. The inner diameter of the upper cavity 90 is smaller than the inner diameter of the lower cavity 92. The guide cavity 91 is conical, and the lower end of the spring 6 is located in the lower cavity 92. Since the outer diameter of spring 6 in this structure is not constant from top to bottom, the outer diameter of the lower end of spring 6 is larger than that of the upper end of spring 6. The inner diameter of the upper cavity 90 matches the outer diameter of the upper part of spring 6, thus limiting the horizontal offset of the upper part of spring 6. The inner diameter of the lower cavity 92 matches the outer diameter of the lower end of spring 6, thus limiting the horizontal offset of the lower end of spring 6. This ensures the stability of the entire spring 6 after installation. The guide cavity 91 guides the assembly of spring 6 from bottom to top, ensuring that the upper part of spring 6 can be accurately inserted into the upper cavity 90.

[0021] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model 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 utility model or exceeding the scope defined by the appended claims.

Claims

1. A spring assembly structure for a gun valve body, comprising a gun housing (1) and a valve body (2) disposed within the gun housing (1), wherein a valve seat (4), a ball bearing (5), and a spring (6) are disposed within the valve body (2), the inner wall of the valve body (2) having a stepped surface (3), and the lower end of the spring (6) abutting against the stepped surface (3) and the upper end abutting against the ball bearing (5), characterized in that, The inner wall of the valve body (2) has a conical cavity (7) below the spring (6), the conical cavity (7) has a conical surface (70), the upper end of the conical surface (70) extends to the step surface (3), the inner diameter of the upper port (71) of the conical cavity (7) is smaller than the inner diameter of the lower port (72) of the conical cavity (7).

2. The spring assembly of a gun valve body of claim 1, wherein, The outer diameter of the upper end of the spring (6) is smaller than the inner diameter of the upper port (71) of the conical cavity (7), and the outer diameter of the lower end of the spring (6) is larger than the inner diameter of the upper port (71) of the conical cavity (7).

3. A spring assembly for a gun valve body according to claim 1 or 2, wherein The inner diameter of the lower port (72) of the conical cavity (7) is larger than the outer diameter of the lower end of the spring (6).

4. A spring assembly for a gun valve body according to claim 1 or 2, wherein The valve body (2) has a mounting cavity (8) inside, the mounting cavity (8) is below the conical cavity (7), and the minimum inner diameter of the mounting cavity (8) is greater than the maximum outer diameter of the spring (6).

5. The spring assembly of a gun valve body of claim 1 wherein, The valve body (2) has a spring cavity (9) inside, the spring cavity (9) is above the conical cavity (7), the spring (6) is arranged in the spring cavity (9), the spring cavity (9) includes an upper cavity (90), a guide cavity (91) and a lower cavity (92), the inner diameter of the upper cavity (90) is smaller than the inner diameter of the lower cavity (92), the guide cavity (91) is conical, and the lower end of the spring (6) is located in the lower cavity (92).

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