One-way valve

Abstract

The utility model is suitable for the field of air supply check valves, and provides a one-way valve which comprises an upper valve body, a lower valve body, an air inlet pipe connector, a valve element, a valve needle and a locking nut. The sealing design is adopted, and powder or particles are effectively prevented from entering the rotating shaft or the lifting shaft. The protective measure can prolong the service life of the valve, reduce the maintenance frequency and ensure the continuous and stable operation of the valve. The problem that a traditional valve is prone to being stuck in the dust environment is solved, and therefore the working reliability of the valve is improved. When the valve works in a high-load or high-frequency operation environment, a smooth operation state can be kept, smooth flowing of gas or substances is ensured, and frequent maintenance is not needed. And internal parts of the valve are not easy to be polluted by dust, so that the maintenance complexity is reduced. A user can reduce the downtime, so that the production efficiency is improved, and the maintenance cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of air supplement check valve, especially relates to a one-way valve. BACKGROUND

[0002] In the food, pharmaceutical industry, powder or granular pipeline positive pressure pneumatic long distance conveying process, in the middle part of the pipeline every interval needs to carry out positive pressure air supplement, in order to save energy production, air supplement is through logical relation control, detects the air supplement point and needs air supplement, opens the valve and supplements the positive pressure gas.

[0003] But in the short time of opening the valve, the internal pressure of the positive pressure conveying material is greater than the air supplement pipeline pressure, a large number of powder active particles in the material pipeline pass through the air supplement point into the air supplement pipeline, relevant automatic control valve is jammed, thereby action failure, valve gas leakage, powder into the air supplement pipeline. INNOVATION CONTENT

[0004] The utility model discloses a one-way valve, which aims to solve the problem that the rotating shaft or lifting shaft is easy to enter powder and the rotating or lifting is jammed to cause valve failure.

[0005] The utility model discloses a one-way valve, which is characterized by comprising:

[0006] An upper valve body and a lower valve body are connected by connecting bolts, one side of the upper valve body is connected with an air inlet pipe joint, and the air inlet pipe joint is used for introducing compressed air into the upper valve body.

[0007] A valve core is arranged between the upper valve body and the lower valve body, and the valve core is in close contact with the inner walls of the upper valve body and the lower valve body.

[0008] A valve needle is arranged at one end of the valve core, a tapered section on the valve needle is connected with the center hole of the valve core, and the valve needle is used for adjusting the gap of the valve core.

[0009] As a further scheme of the utility model, a sealing ring is arranged between the valve core and the lower valve body, a first O-shaped sealing ring is arranged between the valve core and the upper valve body, and a second O-shaped sealing ring is arranged between the valve needle and the upper valve body.

[0010] As a further scheme of the utility model, the sealing ring between the lower valve body and the valve core is a double-layer structure.

[0011] As a further scheme of the utility model, the air inlet pipe joint is a rotary connection.

[0012] The one-way valve has the following beneficial effects:

[0013] The application adopts a sealing design, effectively preventing powder or particles from entering the inside of the rotating shaft or the lifting shaft. This protective measure can prolong the service life of the valve, reduce the maintenance frequency, and ensure the continuous and stable operation of the valve. The problem that the traditional valve is easily stuck in a dust environment is solved, thereby improving the working reliability of the valve. When the valve works in an environment with high load or high frequency operation, it can maintain a smooth running state, ensuring the smooth flow of gas or substances, without frequent maintenance. Since the internal components of the valve are not easily contaminated by dust, the complexity of maintenance and repair is reduced. Users can reduce downtime, thereby improving production efficiency and saving maintenance costs. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A structure diagram of a one-way valve is provided in the application.

[0015] In the drawings: 1, lower valve body; 2, valve core; 3, sealing ring; 4, first O-shaped sealing ring; 5, upper valve body; 6, second O-shaped sealing ring; 7, locking nut; 8, valve needle; 9, air inlet pipe joint; 10, connecting bolt. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the application clearer, the application will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application and do not limit the application.

[0017] The specific implementation of the application will be described in detail below with reference to specific examples.

[0018] As shown in the application, the one-way valve comprises: Figure 1 The upper valve body 5 and the lower valve body 1 are connected by the connecting bolt 10, one side of the upper valve body 5 is connected with the air inlet pipe joint 9, and the air inlet pipe joint 9 is used to introduce compressed air into the upper valve body 5.

[0019] The valve core 2 is arranged between the upper valve body 5 and the lower valve body 1, and the valve core 2 is in close contact with the inner walls of the upper valve body 5 and the lower valve body 1.

[0020] The valve needle 8 is arranged at one end of the valve core 2, the tapered section on the valve needle 8 is connected with the center hole of the valve core 2, and is used to adjust the gap of the valve core 2. The locking nut 7 is threadedly connected to the valve needle 8, and is used to control the position of the valve needle 8.

[0021]

[0022] ​The one-way valve is composed of a lower valve body 1, a valve core 2, a sealing ring 3, an upper valve body 5 and a valve needle 8, the sealing ring 3 is tightly sleeved on the outer surface of the valve core 2, the valve needle 8 is screwed into the upper valve body 5 after being equipped with a second O-shaped sealing ring 6, and then the upper valve body 5 is fastened by using a locking nut 7.

[0023] In the embodiment of the utility model, the sealing ring 3 is arranged between the valve core 2 and the lower valve body 1, the first O-shaped sealing ring 4 is arranged between the valve core 2 and the upper valve body 5, and the second O-shaped sealing ring 6 is arranged between the valve needle and the upper valve body.

[0024] Compressed air enters the upper valve body 5 through the air inlet joint 9, reaches the valve core 2 through the valve body channel, the valve core 2 disperses the gas to the four sides of the valve core 2, when the gas pressure reaches a certain value, the gas expands the elastic sealing ring 3, the elastic sealing ring 3 is separated from the valve core 2, the gas is sprayed out of the valve core 2 to achieve the purpose of supplementing the gas to the material pipeline, when the compressed air supply of the air inlet joint 9 stops or the pressure decreases, the pressure of the compressed air in the cavity of the valve core 2 is not enough to expand the elastic sealing ring 3, the sealing ring 3 is attached to the valve core 2, and the closing of the one-way valve is realized.

[0025] When the gas, powder or granular material of the material pipeline wants to enter the one-way valve through the lower valve body 1, because the elastic sealing ring 3 and the valve core 2 are tightly sleeved, the gas, powder or granular material cannot be inversely infiltrated into the cavity of the upper valve body 5 through the gap between the elastic sealing ring 3 and the valve core 2, and cannot reach the automatic control valve of the previous process through the pipeline.

[0026] According to the site working condition, the gap between the tapered section of the valve needle 8 and the center hole of the valve core 2 can be adjusted to adjust the amount of air intake, and the air supplementing amount to the material pipeline can be adjusted.

[0027] In the embodiment of the utility model, the sealing ring 3 between the lower valve body 1 and the valve core 2 is a double-layer structure.

[0028] In the embodiment of the utility model, the air inlet joint 9 is a rotary connection.

[0029] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A one-way valve characterized by, The one-way valve comprises: an upper valve body (5) and a lower valve body (1), the upper valve body (5) and the lower valve body (1) are connected by connecting bolts (10), one side of the upper valve body (5) is connected with an air inlet pipe joint (9), the air inlet pipe joint (9) is used for introducing compressed air into the upper valve body (5); a valve core (2) is arranged between the upper valve body (5) and the lower valve body (1), and the valve core (2) is mutually adhered with the inner walls of the upper valve body (5) and the lower valve body (1); a valve needle (8) is arranged at one end of the valve core (2), a tapered section on the valve needle (8) is connected with a center hole of the valve core (2), which is used for adjusting the gap of the valve core (2), a locking nut (7) is threadedly connected on the valve needle (8), and the locking nut (7) is used for controlling the position of the valve needle (8).

2. The one-way valve of claim 1, wherein A sealing ring (3) is arranged between the valve core (2) and the lower valve body (1), a first O-shaped sealing ring (4) is arranged between the valve core (2) and the upper valve body (5), and a second O-shaped sealing ring (6) is arranged between the valve needle and the upper valve body.

3. The one-way valve of claim 2, wherein, The sealing ring (3) between the lower valve body (1) and the valve core (2) is a double-layer structure.

4. The one-way valve of claim 1, wherein The air inlet pipe joint (9) is a rotary connection.

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