Throttling assembly of air source switch regulating valve

Abstract

The utility model discloses an air source switch regulating valve throttling assembly which comprises a valve body, a valve cover is arranged on the valve body, a supporting spring and a limiting rod are fixedly connected to the inner wall of the valve body, one end of the supporting spring is fixedly connected with a sealing valve element, a groove is formed in the bottom of the sealing valve element, and the supporting spring is arranged on the outer wall of the limiting rod in a sleeved mode. A valve seat is arranged on the inner wall of the valve body, a valve rod is in threaded connection with the valve cover, and a throttling assembly is arranged at one end of the valve rod. The throttling assembly comprises a throttling valve element and a sealing valve element which are located at the two ends of the valve seat, one end of the throttling valve element is connected with the valve rod, a connecting block is arranged at the bottom of the throttling valve element, the sealing valve element is movably connected with the inner wall of the valve body, a groove is formed in the top of the sealing valve element, one end of the connecting block is inserted into the groove, and the connecting block is magnetically connected with the sealing valve element. According to the device, the sealing performance of the joint of the throttle valve core and the valve seat can be improved, so that the phenomenon of air leakage at the joint of the throttle valve core and the valve seat is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of throttle valves, in particular to a throttle component of an air source switch regulating valve. Background Art

[0002] A throttle valve is a valve that controls the flow of a fluid by changing the throttle section or throttle length. A throttle valve and a check valve can be connected in parallel to form a one-way throttle valve. A throttle valve and a one-way throttle valve are simple flow control valves. In a fixed displacement pump hydraulic system, a throttle valve and a relief valve can be combined to form three types of throttling speed control systems, namely, an oil inlet throttling speed control system, an oil return throttling speed control system, and a bypass throttling speed control system.

[0003] In the process of gas transportation using pipelines, a throttle valve is required to cooperate with the transportation. Since the throttle valve works in a high-pressure and high-speed flow environment, its internal valve core and valve seat are easily eroded, affecting the sealing performance of the connection, thus causing gas leakage, so it needs to be improved. Utility Model Content

[0004] The utility model aims to provide a throttling assembly of an air source switch regulating valve to solve the problem of poor sealing effect at the connection between the valve core and the valve seat inside the throttling valve proposed in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a gas source switch regulating valve throttling assembly, comprising a valve body, a valve cover is arranged on the valve body, a valve seat is arranged on the inner wall of the valve body, a valve stem is threadedly connected to the valve cover, and a throttling assembly is arranged at one end of the valve stem;

[0006] The throttling assembly includes a throttling valve core and a sealing valve core located at both ends of the valve seat. One end of the throttling valve core is connected to the valve stem, a connecting block is provided at the bottom of the throttling valve core, the sealing valve core is movably connected to the inner wall of the valve body, a groove is provided at the top of the sealing valve core, one end of the connecting block is inserted into the groove, and the connecting block is magnetically connected to the sealing valve core.

[0007] Preferably, a support spring and a limit rod are fixedly connected to the inner wall of the valve body, and the support spring is sleeved on the outer wall of the limit rod.

[0008] Preferably, one end of the support spring is fixedly connected to the sealing valve core, and a groove is provided at the bottom of the sealing valve core, and the position of the groove corresponds to the position of the limit rod.

[0009] Preferably, a chamber is provided inside the connection block, an electromagnet is arranged inside the chamber, an iron block is embedded in the sealing valve core, and the iron block is connected to the electromagnet by magnetic adsorption.

[0010] Preferably, the throttling valve core is located at the bottom of the sealing valve core, and the sealing valve core is movably connected to the valve body.

[0011] Preferably, a sealing ring is provided on the valve cover, and the sealing ring is sleeved on the outer wall of the valve stem.

[0012] Preferably, a first flow port is provided at one end of the valve body, and a second flow port is provided at the other end of the valve body.

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

[0014] (1) The device can improve the sealing performance of the connection between the throttle valve core and the valve seat of the device, thereby avoiding the phenomenon of air leakage at the connection between the throttle valve core and the valve seat.

[0015] (2) The device is provided with a throttle valve core and a sealing valve core at the upper and lower ends of the valve seat respectively. The throttle valve core and the sealing valve core can be connected by magnetic adsorption at the same time, thereby ensuring the sealing performance of the connection between the throttle valve core, the sealing valve core and the valve seat, and avoiding air leakage.

[0016] (3) By arranging a limit rod and a support spring at the bottom of the sealing valve core, the device can automatically reset the sealing valve core by contracting the support spring after the throttling valve core is separated from the sealing valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a throttling component of a gas source switch regulating valve of the utility model;

[0018] Figure 2 The utility model is a throttling component of a gas source switch regulating valve Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a top view of a sealing valve core of a throttling assembly of an air source switch regulating valve of the utility model;

[0020] Figure 4 The utility model is a bottom view of a throttle valve core of a throttle assembly of an air source switch regulating valve.

[0021] In the figure: 1. valve cover; 2. valve body; 3. first flow port; 4. sealing ring; 5. valve stem; 6. second flow port; 7. throttling assembly; 71. limit rod; 72. support spring; 73. throttling valve core; 74. sealing valve core; 75. electromagnet; 76. connecting block; 8. valve seat. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 The utility model provides a technical solution: a throttling assembly of an air source switch regulating valve, comprising a valve body 2, a valve cover 1 is arranged on the valve body 2, a sealing ring 4 is arranged on the valve cover 1, and the sealing ring 4 is sleeved on the outer wall of the valve stem 5; this structure can improve the sealing performance when the valve stem 5 is connected to the valve cover 1 by arranging the sealing ring 4, and avoid the phenomenon of air leakage at the connection between the valve cover 1 and the valve stem 5; a first flow port 3 is arranged at one end of the valve body 2, and a second flow port 6 is arranged at the other end of the valve body 2; the first flow port 3 and the second flow port 6 of this structure are used for the entry and outflow of the medium; a support spring 72 and a limit rod 71 are fixedly connected to the inner wall of the valve body 2, and the support spring 72 is sleeved on the outer wall of the limit rod 71; one end of the support spring 72 is connected to the valve body 2, and the valve cover 1 is provided with a sealing ring 4. The sealing valve core 74 is fixedly connected, and a groove is provided at the bottom of the sealing valve core 74, and the position of the groove corresponds to the position of the limiting rod 71; this structure can limit the support spring 72 by setting the limiting rod 71, thereby making the support spring 72 more stable when stretching and contracting, and avoiding the support spring 72 from tilting; this structure can automatically drive the sealing valve core 74 to drop in position by contraction when the electromagnet 75 of the throttle valve core 73 is closed by setting the support spring 72, and automatically realize the separation of the sealing valve core 74 and the throttle valve core 73; the inner wall of the valve body 2 is provided with a valve seat 8, and the valve cover 1 is threadedly connected with a valve stem 5, and a throttling assembly 7 is provided at one end of the valve stem 5; the power line of the electromagnet 75 passes through the hole inside the valve stem 5;

[0024] The throttling assembly 7 includes a throttling valve core 73 and a sealing valve core 74 located at both ends of the valve seat 8. One end of the throttling valve core 73 is connected to the valve stem 5. A connecting block 76 is provided at the bottom of the throttling valve core 73. A chamber is provided inside the connecting block 76. An electromagnet 75 is provided inside the chamber. An iron block is embedded in the sealing valve core 74. The iron block is magnetically adsorbed and connected to the electromagnet 75. This structure can automatically control the adsorption and fixation of the throttling valve core 73 and the sealing valve core 74 by arranging the electromagnet 75 to be magnetically adsorbed with the iron block inside the sealing valve core 74. The fixed connection can seal both the upper and lower ends of the valve seat 8, thereby avoiding air leakage; the throttle valve core 73 is located at the bottom of the sealing valve core 74, and the sealing valve core 74 and the valve body 2 form a movable connection; the sealing valve core 74 of this structure can slide up and down, and the sealing valve core 74 can be connected to the throttle valve core 73 when it moves upward, and the sealing valve core 74 is separated from the throttle valve core 73 when it descends; the sealing valve core 74 is movably connected to the inner wall of the valve body 2, and a groove is provided on the top of the sealing valve core 74, one end of the connecting block 76 is inserted into the groove, and the connecting block 76 is magnetically connected to the sealing valve core 74.

[0025] Working principle: When using the air source switch regulating valve throttling assembly, first rotate the valve stem 5 so that the valve stem 5 drives the throttling valve core 73 to approach the sealing valve core 74 and the valve seat 8. When the throttling valve core 73 contacts the valve seat 8, the electromagnet 75 can be started. Under the action of the magnetic force of the electromagnet 75, it can be magnetically connected with the iron block on the sealing valve core 74, thereby driving the sealing valve core 74 to approach the throttling valve core 73. At this time, the support spring 72 is in a stretched state, and the connection between the throttling valve core 73, the sealing valve core 74 and the valve seat 8 is in a completely sealed state. If the throttling valve core 73 needs to be opened, the electromagnet 75 can be closed, and then the valve stem 5 can be rotated in the opposite direction to move the throttling valve core 73 away from the valve seat 8. At this time, the sealing valve core 74 moves downward under the contraction of the support spring 72, so that the sealing valve core 74 is also separated from the valve seat 8.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A throttling assembly of a gas source switch regulating valve, comprising a valve body (2), characterized in that: The valve body (2) is provided with a valve cover (1), the inner wall of the valve body (2) is provided with a valve seat (8), the valve cover (1) is threadedly connected with a valve stem (5), and one end of the valve stem (5) is provided with a throttling assembly (7); The throttling assembly (7) comprises a throttling valve core (73) and a sealing valve core (74) located at both ends of the valve seat (8); one end of the throttling valve core (73) is connected to the valve stem (5); a connecting block (76) is provided at the bottom of the throttling valve core (73); the sealing valve core (74) is movably connected to the inner wall of the valve body (2); a groove is provided at the top of the sealing valve core (74); one end of the connecting block (76) is inserted into the groove; the connecting block (76) is magnetically connected to the sealing valve core (74).

2. The air source switch regulating valve throttling assembly according to claim 1, characterized in that: The inner wall of the valve body (2) is fixedly connected with a support spring (72) and a limit rod (71), and the support spring (72) is sleeved on the outer wall of the limit rod (71).

3. The throttling assembly of the gas source switch regulating valve according to claim 2 is characterized in that: One end of the support spring (72) is fixedly connected to the sealing valve core (74); a groove is provided at the bottom of the sealing valve core (74); the position of the groove corresponds to the position of the limiting rod (71).

4. The throttling assembly of the gas source switch regulating valve according to claim 1, characterized in that: The connection block (76) has a chamber formed therein, an electromagnet (75) is disposed inside the chamber, an iron block is embedded in the sealing valve core (74), and the iron block is connected to the electromagnet (75) by magnetic adsorption.

5. The throttling assembly of the gas source switch regulating valve according to claim 1, characterized in that: The throttle valve core (73) is located at the bottom of the sealing valve core (74), and the sealing valve core (74) and the valve body (2) are movably connected.

6. The air source switch regulating valve throttling assembly according to claim 1, characterized in that: The valve cover (1) is provided with a sealing ring (4), and the sealing ring (4) is sleeved on the outer wall of the valve stem (5).

7. The air source switch regulating valve throttling assembly according to claim 1, characterized in that: One end of the valve body (2) is provided with a first flow port (3), and the other end of the valve body (2) is provided with a second flow port (6).

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