CN112761925B - Gas Valves and Compressors - Google Patents

Abstract

The invention discloses a gas valve and a compressor, and relates to the technical field of compressor and accessory design. The invention has the advantages that the dynamic flow of the air flow in the valve body is realized by the adjusting plug, the impact force on the valve core is reduced, on one hand, the service life of the valve core is prolonged, and on the other hand, the noise in the valve body is reduced.

Description

Gas Valves and Compressors

technical field

The invention relates to the technical field of compressor and accessories design, in particular to a gas valve and a compressor.

Background technique

Gas valve is a commonly used component in air compressors. For example, the common valve has the application number CN01261114.X, and the name is anti-freezing and anti-overflow liquid valve. By moving the valve core up and down, the air flow can be blocked.

When the valve core is closed, the airflow becomes smaller, which is easy to generate noise, and the end of the valve core is subject to a large impact force, which is easy to be damaged, has a low service life, and has a high replacement cost.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to reduce the noise generated when the valve core is closed, improve the service life of the valve core, and design a gas valve.

The technical solution adopted by the present invention to solve the technical problem is as follows: a gas valve, comprising: a casing, wherein the casing includes a first cavity, a second cavity, a third cavity, and a fourth cavity that are communicated in sequence and a fifth cavity, the side of the first cavity is provided with an opening, and the side of the fourth cavity is provided with an opening; a valve core, the valve core is slidably arranged in the fourth cavity of the housing, It is used to control the passage of the fourth cavity and the fifth cavity, the middle of the valve core is provided with an inner cavity, and the side of the valve core is provided with an opening; a gland, the gland is arranged on the casing At the opening of the fourth cavity of the valve core, the gland and the valve core are movably arranged; the core piston is slidably arranged in the inner cavity of the valve core; the core rod, the core rod is movably arranged on the valve core In the inner cavity of the core; blocking, the blocking is arranged in the inner cavity of the valve core, the blocking is connected with the core rod, and the blocking is larger than the side opening of the valve core; The three-way includes a first through cavity, a second through cavity and a third through cavity that communicate with each other. When the valve core blocks the fourth cavity and the fifth cavity, the side opening of the valve core faces the first cavity. A through cavity, the second through cavity communicates with the opening of the first cavity; an adjustment plug, the adjustment plug is movably arranged in the second through cavity of the three-way; through cavity spring, the through cavity spring One end of the tee is fixedly arranged in the tee, and the other end is connected with the regulating plug; the regulating piston, which is arranged in the third through cavity of the tee, is used to adjust the pressure in the tee .

Further, it also includes an inner cavity spring, the inner cavity spring is arranged in the inner cavity of the valve core, one end of the inner cavity spring is fixedly arranged on the core piston, and the other end is fixedly arranged on the blocking superior.

Further, the side wall of the first cavity is provided with an inner groove opposite to its opening.

Further, the rubber pad is also included, and the rubber pad is fixedly arranged on the inner groove of the first cavity.

Further, it also includes a sliding cavity, the sliding cavity is arranged on the three-way, and the sliding cavity is slidably arranged with the valve core.

Further, a pressure gauge is also included, and the pressure gauge is arranged on the three-way.

A compressor, comprising the above-mentioned gas valve.

The beneficial effects of the present invention are: the dynamic flow of the air flow inside the valve body is realized by adjusting the blocking, the impact force on the valve core is reduced, on the one hand, the service life of the valve core is prolonged, and on the other hand, the noise inside the valve body is reduced; In addition, the regulating piston can be used alone to reduce the flow in advance, and the core piston can reduce the flow twice, with strong buffering.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:

Fig. 1 is a state schematic diagram of a gas valve, wherein the valve is in a flow state;

Figure 2 is a schematic structural diagram of a housing;

Fig. 3 is the state schematic diagram of the gas valve, wherein, the blocking is in the open state;

Fig. 4 is the state schematic diagram of the gas valve, wherein, the valve is in the closed state;

Fig. 5 is the structural representation of tee;

FIG. 6 is a schematic view of the state of the gas valve, wherein the valve is in a stable closed state.

In the above figures, 1. the shell; 101, the first cavity; 102, the second cavity; 103, the third cavity; 104, the fourth cavity; 105, the fifth cavity;

2. Valve core; 3. Gland; 4. Core piston; 5. Core rod; 6. Blocking;

7. Tee; 701, first through cavity; 702, second through cavity; 703, third through cavity;

8. Adjusting plug; 9. Through-cavity spring; 10. Adjusting piston; 11. Inner cavity spring; 12. Rubber pad; 13. Sliding cavity; 14. Pressure gauge.

Detailed ways

In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, below in conjunction with the accompanying drawings and preferred embodiments, the specific embodiments, structures, features and effects according to the present invention are described in detail as follows:

A gas valve, as shown in Figures 1 to 6, includes a housing 1, a valve core 2, a gland 3, a core piston 4, a core rod 5, a plug 6, a three-way 7, an adjustment plug 8, and a through-cavity spring 9 and adjusting piston 10.

As shown in FIG. 2 , the housing 1 includes a first cavity 101 , a second cavity 102 , a third cavity 103 , a fourth cavity 104 and a fifth cavity 105 which are communicated in sequence. The side surface of the first cavity 101 An opening is provided, and the side of the fourth cavity 104 is provided with an opening. Preferably, the first cavity 101 and the fourth cavity 104 are cylindrical to facilitate the installation of other components.

Referring to FIG. 1 , the valve core 2 is slidably arranged in the fourth cavity 104 of the housing 1 to control the connection between the fourth cavity 104 and the fifth cavity 105 , and the gas flows from the fourth cavity 104 to the fifth cavity 105 . After the cavity 105, the valve core 2 acts as a hindrance. Preferably, a valve pad may be provided on the fourth cavity 104 , and the valve pad matches the valve core 2 . The gland 3 is arranged at the opening of the fourth cavity 104 of the housing 1, and the gland 3 and the valve core 2 are movably arranged. The gland 3 plays a blocking role, and valve sealing is common knowledge, and this application will not do too much instruction of.

Referring to FIGS. 1 , 3 and 4 , the focus of the present application is that the valve core 2 is provided with an inner cavity in the middle, and the side surface of the valve core 2 is provided with an opening. The core piston 4 is slidably arranged in the inner cavity of the valve core 2; the core rod 5 is movably arranged in the inner cavity of the valve core 2; The plug 6 is larger than the side opening of the valve core 2 . The blocking 6 can block the side opening of the valve core 2 , which is realized by controlling the core rod 5 . When the blocking 6 moves above the side opening of the valve core 2 , the gas in the inner cavity of the valve core 2 can communicate with the side opening of the valve core 2 . Preferably, an inner cavity spring 11 is also designed, and the inner cavity spring 11 is arranged in the inner cavity of the valve core 2 . The inner cavity spring 11 plays the role of adjusting the up and down position of the core piston 4. During the normal operation of the valve, it can buffer the gas pressure and reduce the impact of the gas pressure on the valve core 2; when the valve is closed, it can buffer the core piston 4 from vibrating up and down. Amplitude.

As shown in FIG. 5 , the tee 7 includes a first through cavity 701 , a second through cavity 702 and a third through cavity 703 that communicate with each other, and the second through cavity 702 communicates with the opening of the first cavity 101 . When the valve core 2 blocks the fourth cavity 104 and the fifth cavity 105 , the side opening of the valve core 2 faces the first through cavity 701 . The second through cavity 702 is blocked.

The adjusting plug 8 is movably arranged in the second through cavity 702 of the tee 7 , one end of the through cavity spring 9 is fixedly arranged in the tee 7 , and the other end is connected to the adjusting plug 8 . The adjusting plug 8 is slidably arranged in the first through-cavity 701, and when the adjusting plug 8 enters the first cavity 101, it plays the role of blocking the airflow in the first cavity 101, that is, reducing the flow speed of the airflow; When the 8 returns to the tee 7, the airflow in the first cavity 101 circulates normally. The regulating piston 10 is arranged in the third through cavity 703 of the tee 7 , and is used to adjust the pressure in the tee 7 by adjusting the position of the regulating piston 10 in the tee 7 . Preferably, the side wall of the first cavity 101 is provided with an inner groove opposite to its opening, so as to avoid the impact of the adjustment plug 8 to damage the first cavity 101, and more preferably, it also includes a rubber pad 12, and the rubber pad 12 is fixedly arranged on the first cavity 101. on the inner groove of a cavity 101 .

First, as shown in FIG. 1, the core piston 4 is in the valve core 2, and the tee 7 is blocked by the block 6, and the air flow passes through the first cavity 101, the second cavity 102, the third cavity 103, and the fourth cavity in sequence. channel 104 and fifth channel 105. When the valve needs to be closed, move the core rod 5 upward, as shown in FIG. 3, due to the action of the air pressure in the valve core 2, the core piston 4 will not move upwards under the action of the air pressure in the housing 1, but it will have a A little bit of upward displacement. When the spool 2 is moved downward, as shown in Figure 4, the air pressure at the end of the spool 2 suddenly increases. At this time, the spool piston 4 moves upward under pressure, and the inner cavity of the spool 2 and the through cavity of the tee 7 The pressure in the cavity increases, and the regulating block 8 enters the first cavity 101, blocking the airflow in the first cavity 101, thereby reducing the air flow in the second cavity 102, the third cavity 103 and the fourth cavity 104. air pressure. After the pressure received by the core piston 4 is reduced, it will gradually move downward, and the adjustment plug 8 retracts, thereby completing the entire plugging function, that is, the state shown in FIG. 6 .

On the basis of the above, a sliding cavity 13 is also designed, the sliding cavity 13 is arranged on the tee 7, and the sliding cavity 13 is slidably arranged with the valve core 2 to play a sealing role. A pressure gauge 14 is also designed, and the pressure gauge 14 is arranged on the tee 7 to display the pressure.

The present invention also provides a compressor including the above-mentioned gas valve. After the above-mentioned gas valve is installed in the compressor, the noise of the compressor can be greatly reduced, and the same beneficial effects as the above-mentioned gas valve can be achieved.

The present invention has been described above with reference to preferred embodiments, but the scope of protection of the present invention is not limited thereto, and various improvements may be made and equivalents may be substituted therein without departing from the scope of the present invention. As long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way, and any reference signs in the claims should not be construed as limiting the claims involved, regardless of In all respects, the embodiments should be considered as exemplary and not restrictive. Therefore, any technical solutions falling within the scope of the claims are within the protection scope of the present invention.

Claims (7)

1. A gas valve, comprising:

the device comprises a shell (1), wherein the shell (1) comprises a first cavity channel (101), a second cavity channel (102), a third cavity channel (103), a fourth cavity channel (104) and a fifth cavity channel (105) which are sequentially communicated, an opening is formed in the side surface of the first cavity channel (101), and an opening is formed in the side surface of the fourth cavity channel (104);

the valve core (2) is arranged in a fourth cavity channel (104) of the shell (1) in a sliding mode and used for controlling the blockage of the fourth cavity channel (104) and a fifth cavity channel (105), an inner cavity is formed in the middle of the valve core (2), and an opening is formed in the side face of the valve core (2);

the gland (3) is arranged at an opening of a fourth cavity (104) of the shell (1), and the gland (3) and the valve core (2) are movably arranged;

the core piston (4), the said core piston (4) is set up in the cavity of the said valve core (2) slidably;

the core rod (5), the said core rod (5) is set up in the cavity of the said valve core (2) movably;

the plug (6), the said plug (6) is set up in the cavity of the said valve core (2), the said plug (6) is connected with core bar (5), the said plug (6) is greater than the side opening of the said valve core (2);

the tee joint (7), the tee joint (7) includes a first through cavity (701), a second through cavity (702) and a third through cavity (703) which are communicated with each other, when the valve core (2) blocks the fourth cavity (104) and the fifth cavity (105), the side opening of the valve core (2) is over against the first through cavity (701), and the second through cavity (702) is communicated with the opening of the first cavity (101);

the adjusting plug (8), the adjusting plug (8) is movably arranged in a second through cavity (702) of the tee joint (7);

one end of the cavity through spring (9) is fixedly arranged in the tee joint (7), and the other end of the cavity through spring (9) is connected with the adjusting plug (8);

the adjusting piston (10) is arranged in a third through cavity (703) of the tee joint (7) and used for adjusting the pressure in the tee joint (7).

2. Gas valve according to claim 1, further comprising a bore spring (11), wherein the bore spring (11) is arranged in the bore of the valve spool (2), and wherein one end of the bore spring (11) is fixedly arranged on the spool piston (4) and the other end is fixedly arranged on the plug (6).

3. Gas valve according to claim 1, characterized in that the side wall of the first channel (101) is provided with an internal groove arranged opposite to its opening.

4. A gas valve according to claim 3, further comprising a rubber pad (12), wherein the rubber pad (12) is fixedly arranged on the inner groove of the first channel (101).

5. The gas valve according to claim 1, further comprising a sliding chamber (13), wherein the sliding chamber (13) is arranged on the tee joint (7), and the sliding chamber (13) is arranged in a sliding manner with the valve core (2).

6. Gas valve according to claim 1, further comprising a pressure gauge (14), said pressure gauge (14) being arranged on said tee (7).

7. A compressor, characterized by comprising a gas valve according to any one of claims 1 to 5.

Images