CN201053525Y - One-way throttle valve - Google Patents

Abstract

The utility model discloses a one-way throttle valve used in an air compressor, comprising a valve body, a steel ball and a through plug end fitting provided with a current passage, wherein, the valve body is connected with the through plug end fitting through threads; the axes of the valve body and the through plug end fitting are coaxial with the current passages; the steel ball is arranged inside the cavity formed by the valve body and the through plug end fitting; one end inside the cavity of the valve body is provided with a conical surface which is sealed with the steel ball; the valve body and the through plug end fitting are arranged vertically; the conical surface end of the valve body is hereunder, while the through plug end fitting is above; the contact end face of the through plug end fitting and the steel ball is provided with 1-8 throttling passages, which ensures normal medium circulation and good throttling effect. The one-way throttle valve of the utility model solves the problem that the spring of the prior one-way throttle valve is easy to break, or can not work normally; the utility model enhances the reliability of the product, facilitates installation and lowers production cost. The utility model is in particular applicable to one-way throttle accessories for gas compressors.

Description

one-way throttle valve

Technical field:

The utility model relates to the technical field of valve control, in particular to a one-way throttle valve for a gas compressor with an automatic adjustment function.

Background technique:

The one-way throttle valve used in the air compressor generally adopts the slide valve type, needle valve type and rotary valve type structure. , use cost is too high, and inconvenient. Patent No.: 91203797.0 utility model patent "one-way throttle valve" discloses an improved "one-way throttle valve", which changes the vertical cross position of the traditional air flow channel and throttle valve stem into a coaxial device , can greatly reduce the volume of the throttle valve. However, this patent still needs to install a spring in the valve cavity of the one-way throttle valve to control the opening pressure difference of the valve. There are pressure pulsations in the gas flowing in the gas compressor pipeline, which makes the spring work under the influence of alternating load for a long time , It is very easy to cause the spring to fail, and the one-way throttle valve cannot achieve the purpose of one-way throttling, and sometimes even cause serious accidents.

Utility model content:

The technical problem to be solved by the utility model is to provide a one-way throttle valve with good safety, practicability, stability and reliability, so as to overcome the problems of the existing one-way throttle valves in terms of safety and stability. And the above-mentioned defects in terms of reliability, at the same time its installation and use are extremely convenient and flexible.

The technical solution adopted to solve the above technical problems is: a one-way throttle valve for an air compressor, including a valve body, a steel ball, and a straight-through terminal joint with an air flow channel. The valve body and the straight-through terminal joint are connected by threads, and the valve body and The axis of the straight-through terminal joint is coaxial with the air flow channel. A steel ball is installed in the inner cavity formed by the valve body and the straight-through terminal joint. One end of the valve body cavity has a tapered surface that forms a seal with the steel ball. Fittings are installed vertically with the tapered end of the body down and the straight end fitting up.

A further technical solution of the utility model is: 1 to 8 throttling air passages are opened on the end face of the straight-through terminal joint in contact with the steel ball.

Due to the adoption of the above structure, the one-way throttle valve of the present invention has the following beneficial effects:

1. The one-way throttle valve of the utility model removes the wearing part spring inside the valve cavity, and uses steel balls for one-way throttling, and uses the gravity and gas pressure received by the steel balls to automatically adjust and restore the position of the steel balls. The automatic reset function not only eliminates the difficulties caused by frequent spring damage or failure to work normally, but also greatly improves the safety, practicability, stability and reliability of the one-way throttle valve in operation. The differential pressure of one-way flow can be precisely controlled.

2. The one-way throttle valve of the utility model has a throttling air passage on the end face of the straight-through terminal joint in contact with the steel ball, so that on the one hand, the normal medium circulation is satisfied, and on the other hand, the throttling effect is guaranteed. At the same time, the steel ball can be stably positioned on the airflow channel leading directly to the end face of the terminal joint, giving the steel ball precise guiding and reset functions.

3. The structure of the one-way throttle valve of the utility model is simple, so that the processing and manufacturing process becomes simple. The external ends of the valve body and the straight-through terminal joint have external threads respectively, and the connection with the air pipe of the air compressor or the pneumatic components becomes convenient. Reduced production costs and easy maintenance.

Below, the technical features of the one-way throttle valve of the present invention will be further described in conjunction with the accompanying drawings and embodiments.

Description of drawings:

Figure 1 to Figure 2: Schematic diagram of the structure of the utility model one-way throttle valve:

Figure 1 - in a one-way sealing state, Figure 2 - in a throttling flow state;

Figure 3: Schematic diagram of the structure of the straight-through terminal joint of the one-way throttle valve;

Figure 4: Bottom view of Figure 3;

Figure 5 and Figure 6: Schematic diagram of the distribution of the throttling air passage opened on the end face of the straight-through terminal joint in contact with the steel ball.

Detailed ways:

A one-way throttle valve for an air compressor, comprising a valve body 1, a steel ball 2, and a straight-through terminal joint 3 with an airflow channel. The axis is coaxial with the air flow passage, and a steel ball 2 is installed in the cavity formed by the valve body 1 and the straight-through terminal joint 3. One end of the cavity of the valve body 1 has a conical surface 11 that forms a seal with the steel ball 2, and the valve body 1 Install vertically with the straight-through terminal joint 3, the tapered end of the valve body 1 is on the bottom, and the straight-through terminal joint 3 is on the top (see Figure 1, Figure 2).

On the end face of the straight-through terminal joint 3 in contact with the steel ball, there are four grooves whose connection line is "cross" as the throttling air passage 32 (see Fig. 3, Fig. 4), and the depth of the groove is 1-1.5mm.

As a transformation of the embodiment of the present utility model, the number of throttle air passages 32 opened on the end face of the straight-through terminal joint 3 in contact with the steel ball can be increased or decreased, but there is at least one, generally 3 to 8, Symmetrically distributed, its cross-sectional shape is square or circular (see Figure 5 and Figure 6, Figure 5 shows that there is one throttling air passage, and Figure 6 shows that there are three throttling air passages).

The external ends of the valve body 1 and the straight-through terminal joint 3 of the utility model respectively have external threads, and the threads can be easily installed in the air pipeline of the air compressor or connected with pneumatic components.

The working principle and process of the one-way throttle valve of the utility model are as follows: when the gas enters from the bottom of the valve body 1, if the difference between the gas force on the lower and upper surfaces of the steel ball is less than the gravity on the steel ball itself, it is not enough Push the steel ball, the steel ball will always be embedded in the taper hole of the valve body, preventing the passage of gas (see Figure 1), until the difference between the gas force on the lower and upper surfaces of the steel ball exceeds the gravity on the steel ball, the steel ball will be supported rise. The opening of the valve is closely related to the pressure difference between the inlet and outlet. The greater the pressure difference, the greater the opening of the valve until it is fully opened (see Figure 2).

Claims (3)

1. A one-way throttle valve, comprising a valve body, a steel ball, and a straight-through terminal joint with an airflow passage, the valve body and the straight-through terminal joint are connected by threads, and the axis of the valve body and the straight-through terminal joint is coaxial with the airflow passage, and its characteristics The reason is: a steel ball (2) is installed in the cavity formed by the valve body (1) and the straight-through terminal joint (3), and one end of the cavity of the valve body (1) has a tapered surface that forms a seal with the steel ball (2) (11), the valve body (1) is vertically installed with the straight-through terminal joint (3), the tapered end of the valve body (1) is down, and the straight-through terminal joint (3) is on. 2. The one-way throttle valve according to claim 1, characterized in that 1 to 8 throttling air passages (32) are opened on the end surface of the straight-through terminal joint (3) in contact with the steel ball. 3. The one-way throttle valve according to claim 2, characterized in that: said throttling air passage (32) is four throttling air passages formed by four grooves whose connecting lines are in the shape of a "cross" , The depth of the groove is 1-1.5mm.

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