Nozzle structure with good sealing performance

Abstract

The utility model relates to a nozzle structure with good sealing performance. The utility model has the advantage of good sealing performance, and comprises a pipe body, the upper part of the pipe body is in threaded connection with a valve seat, the middle part of the valve seat is provided with a liquid inlet cavity, the middle part of the pipe body is provided with a flowing cavity communicated with the liquid inlet cavity, the lower part of the pipe body is provided with a liquid outlet cavity communicated with the flowing cavity, and the upper end of the liquid outlet cavity is communicated with a spray nozzle. A sealing ring is installed on the lower portion of the valve seat, a ball plug is arranged at the communication position of the liquid inlet cavity and the flowing cavity, a spring is arranged in the flowing cavity, the upper portion of the spring abuts against the ball plug, the lower portion of the spring abuts against the protruding seat, and the spraying opening is fixed to the lower portion of the protruding seat and communicated with the flowing cavity through the protruding seat. The protruding base is placed in the flowing cavity, and the ball plug pushes and extrudes the sealing ring through the spring.

Description

Technical Field

[0001] This utility model belongs to the field of nozzle technology, specifically relating to a nozzle structure with good sealing performance. Background Technology

[0002] As a core component of the fluid control system, the nozzle's performance directly affects the equipment's reliability and lifespan. In military armor applications, the nozzle must simultaneously meet the requirements of high-frequency operation (over 1.2 million cycles), high-pressure fluid sealing (reverse sealing performance), and adaptability to extreme environments.

[0003] The sealing ring in the existing nozzle structure undergoes plastic deformation during long-term use, causing it to detach from the sealing groove and resulting in poor sealing performance. Therefore, a nozzle structure with better sealing performance needs to be designed. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a nozzle structure with good sealing performance.

[0005] The technical solution of this utility model is as follows:

[0006] A nozzle structure with good sealing performance includes a tube body, a valve seat threadedly connected to the upper part of the tube body, an inlet chamber in the middle of the valve seat, a flow chamber communicating with the inlet chamber in the middle of the tube body, an outlet chamber communicating with the flow chamber in the lower part of the tube body, a spray nozzle connected to the upper end of the outlet chamber, a sealing ring installed at the lower part of the valve seat, a ball plug provided at the connection between the inlet chamber and the flow chamber, a spring provided in the flow chamber, the upper part of the spring pressing against the ball plug, the lower part of the spring pressing against a protrusion, the spray nozzle fixed to the lower part of the protrusion, the spray nozzle communicating with the flow chamber through the protrusion, the protrusion being placed in the flow chamber, and the ball plug being pushed by the spring to compress the sealing ring.

[0007] Furthermore, an adjusting washer is provided inside the flow cavity, and the protrusion is placed on the upper side of the adjusting washer.

[0008] Furthermore, the inner surface of the sealing ring is circular, and the ball plug fits into the inner surface of the sealing ring.

[0009] Furthermore, the ball plug is made of steel.

[0010] Furthermore, the liquid outlet chamber is frustum-shaped, the upper end of the spray nozzle is connected to the flow chamber, and the lower end of the spray nozzle is connected to the liquid outlet chamber.

[0011] Furthermore, a sleeve block is fixed to the outer wall of the middle part of the tube.

[0012] Furthermore, the outer wall of the protrusion can fit tightly against the inner wall of the flow cavity.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model uses a detachable valve seat, ball plug, spring and spring seat to facilitate the replacement of internal components and save costs.

[0015] 2. The structure of the sealing groove and the sealing ring of this utility model can better lock the sealing ring in place, reduce the risk of the sealing ring falling off, and increase the contact area between the sealing ring and the ball plug, thereby improving the sealing performance.

[0016] In summary, this invention has the advantage of good sealing performance. Attached Figure Description

[0017] Figure 1 This is a front sectional view of the structure of this utility model;

[0018] Figure 2 This is an enlarged schematic diagram of the ball plug and sealing ring in contact in this utility model.

[0019] In the diagram, 1 is the tube body; 2 is the valve seat; 3 is the inlet chamber; 4 is the flow chamber; 5 is the outlet chamber; 6 is the spray nozzle; 7 is the sealing ring; 8 is the ball plug; 9 is the spring; 10 is the boss; 11 is the adjusting washer; and 12 is the sleeve block. Detailed Implementation

[0020] 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.

[0021] like Figures 1-2 As shown, a nozzle structure with good sealing performance includes a tube body 1, a valve seat 2 threadedly connected to the upper part of the tube body 1, an inlet chamber 3 opened in the middle of the valve seat 2, a flow passage chamber 4 connected to the inlet chamber 3 opened in the middle of the tube body 1, an outlet chamber 5 connected to the flow passage chamber 4 opened in the lower part of the tube body 1, a spray nozzle 6 connected to the upper end of the outlet chamber 5, a sealing ring 7 installed on the lower part of the valve seat 2, a ball plug 8 provided at the connection between the inlet chamber 3 and the flow passage chamber 4, a spring 9 provided in the flow passage chamber 4, the upper part of the spring 9 pressing against the ball plug 8, the lower part of the spring 9 pressing against the protrusion 10, the spray nozzle 6 fixed to the lower part of the protrusion 10, the spray nozzle 6 connected to the flow passage chamber 4 through the protrusion 10, the protrusion 10 placed in the flow passage chamber 4, and the ball plug 8 being pushed and squeezed by the spring 9 to squeeze the sealing ring 7;

[0022] The oil enters from the inlet chamber 3 at the top of the pipe body 1. The oil pushes the ball plug 8, which squeezes the spring 9, making the inlet chamber 3 and the flow chamber 4 connected. The oil enters the flow chamber 4 and then flows from the flow protrusion 10, through the spray nozzle 6 into the outlet chamber 5, and flows out from the outlet chamber 5. When the oil is not sprayed out, the spring 9 pushes the ball plug 8 to squeeze the sealing ring 7, thus separating the flow chamber 4 and the inlet chamber 3.

[0023] Among them, the valve seat 2 is connected by a thread, which makes it easy to remove. After removing the valve seat 2, the sealing ring 7 on the valve seat 2 can be removed and replaced. After removing the valve seat 2, the ball plug 8, spring 9 and convex seat 10 can be directly taken out for repair and replacement. The repair and replacement of individual parts can replace the whole whole replacement, which can save costs.

[0024] The lower part of the valve seat 2 is provided with a sealing groove. The longitudinal section of the sealing groove is two obliquely placed squares, which makes it more difficult for the sealing ring 7 to fall off when it is engaged in the sealing groove.

[0025] The lower part of the boss 10 can be in the shape of a cross, so that the oil flowing through the cavity 4 can pass through the frame and flow into the spray nozzle 6.

[0026] In this embodiment, an adjusting washer 11 is provided inside the flow cavity 4, and the protrusion 10 is placed on the upper side of the adjusting washer 11.

[0027] Preferably, the inner surface of the sealing ring 7 is circular, and the ball plug 8 fits into the inner surface of the sealing ring 7. When it fits into the sealing ring 5, the contact surface is larger, which can better fit the ball plug 8 and improve the sealing effect.

[0028] In this embodiment, the ball plug 8 is made of steel ball.

[0029] In this embodiment, the liquid outlet chamber 5 is frustum-shaped, the upper end of the spray nozzle 6 is connected to the flow passage chamber 4, and the lower end of the spray nozzle 6 is connected to the liquid outlet chamber 5.

[0030] In this embodiment, a sleeve block 12 is fixed to the outer wall of the middle part of the tube body 1.

[0031] In this embodiment, the outer wall of the protrusion 10 can be pressed against the inner wall of the flow cavity 4. The protrusion 10 is placed in the flow cavity 4 and can move up and down. The spring 9 can push the ball plug 8 against the spring 9. By placing different thicknesses of adjusting washers, the force of the spring 9 on the ball plug 8 can be adjusted. When the elastic force of the spring 9 decreases, a thicker adjusting washer can be replaced so that the force applied by the spring 9 on the ball plug 8 remains unchanged, and the ball plug 8 can be tightly fitted with the sealing ring 7.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A nozzle structure with good sealing properties, characterized in that: The utility model provides a liquid outlet valve, which comprises a pipe body, a valve seat is threadedly connected to the upper portion of the pipe body, a liquid inlet cavity is formed in the middle portion of the valve seat, a flow-through cavity is formed in the middle portion of the pipe body and communicates with the liquid inlet cavity, a liquid outlet cavity is formed in the lower portion of the pipe body and communicates with the flow-through cavity, a spray port is connected to the upper end of the liquid outlet cavity, a sealing ring is mounted on the lower portion of the valve seat, a ball plug is arranged at the position where the liquid inlet cavity communicates with the flow-through cavity, a spring is arranged in the flow-through cavity, the upper portion of the spring abuts against the ball plug, the lower portion of the spring abuts against a convex base, the spray port is fixed to the lower portion of the convex base, the spray port communicates with the flow-through cavity through the convex base, the convex base is placed in the flow-through cavity, and the ball plug is pushed to extrude the sealing ring by the spring.

2. A nozzle structure according to claim 1, wherein: An adjusting washer is arranged in the flow-through cavity, and the convex base is placed on the upper side of the adjusting washer.

3. The nozzle structure of claim 1, wherein: The inner side surface of the sealing ring is a circular surface, and the ball plug is attached to the inner side surface of the sealing ring.

4. The nozzle structure according to claim 3, wherein: The ball plug is a steel ball.

5. The nozzle structure of claim 1, wherein: The liquid outlet cavity is a circular truncated cone, the upper end of the spray port communicates with the flow-through cavity, and the lower end of the spray port communicates with the liquid outlet cavity.

6. The nozzle structure of claim 1, wherein: A sleeve block is fixed to the outer wall of the middle portion of the pipe body.

7. The nozzle structure of claim 2, wherein: The outer side wall of the convex base can be attached to the inner wall of the flow-through cavity.

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