Air filter side one-way valve diaphragm

Abstract

The utility model discloses an air filter side one-way valve diaphragm which comprises a valve body, an inlet is formed in one end of the valve body, an outlet is formed in one end, opposite to the inlet, of the valve body, a diaphragm reset mechanism is arranged in one end, located at the inlet, of the valve body, and a circular-truncated-cone-shaped diaphragm is arranged on one side, located at the outlet, of the valve body and connected to the diaphragm reset mechanism. The utility model has the following advantages: the circular truncated cone-shaped diaphragm and the diaphragm reset mechanism are respectively arranged on the two sides of the inner ring opening through the matching of the sealing opening on the inner ring opening, so that the circular truncated cone-shaped diaphragm can be more tightly attached to the sealing opening, and through the structure of the sealing opening and the circular truncated cone-shaped diaphragm, when the sealing opening and the circular truncated cone-shaped diaphragm are in a sealing state, the diaphragm reset mechanism can reset the diaphragm when the sealing opening and the circular truncated cone-shaped diaphragm are in a sealing state. And if the gas in the valve body flows reversely, the circular-truncated-cone-shaped diaphragm is pushed to be tightly attached to the sealing opening, it is effectively guaranteed that the gas cannot flow reversely, and the sealing performance of the one-way valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of one-way valves, in particular to an air filter side one-way valve diaphragm. Background Art

[0002] The existing large-caliber diaphragm one-way valve relies on the diameter difference between the inlet and the outlet, and cooperates with the elastic diaphragm to control the flow direction, that is, forward conduction and reverse blocking. Since the conduction and blocking effects are controlled by the elastic deformation of the diaphragm, the diaphragm will have insufficient elasticity after long-term use and cannot rebound in time. Chinese patent CN210920231U discloses a large-caliber diaphragm one-way valve, including a base, an inlet, an outlet and a diaphragm, the back of the base is fixedly connected to the front of the inlet, and a sealing boss is formed at the intersection of the base and the inlet, the bottom of the base is fixedly installed with an outlet, the front of the inside of the base is fixedly installed with a base, the circumferential surface of the base is movably sleeved with a sleeve, the back of the base and located inside the sleeve is fixedly installed with a telescopic spring, and the tail end of the telescopic spring is fixedly connected to the front inside the sleeve. This type of large-diameter diaphragm one-way valve pushes the edge of the diaphragm inward when fluid passes through, causing the diaphragm to produce elastic deformation and transfer the elastic deformation to the coil spring for storage. When the flow stops, the coil spring returns to its original state and bounces the diaphragm back to its initial position, completing the reverse sealing of the one-way valve and avoiding the problem of being unable to adjust due to insufficient diaphragm elasticity.

[0003] The above prior art has the following deficiencies: In the prior art, a coil spring is arranged inside the diaphragm, which can increase the resilience of the cavity diaphragm, but the telescopic spring always keeps pushing the diaphragm, and when the diaphragm is pushed to contact the sealing boss, the diaphragm is easily deformed and concave inside the inlet under the elastic force of the telescopic spring; and the elastic force of the telescopic spring cannot be controlled. If the elastic force of the telescopic spring is too small, the diaphragm cannot be tightly sealed with the sealing boss, thereby affecting the sealing effect. Therefore, an air filter side one-way valve diaphragm is provided to solve the above problems. Utility Model Content

[0004] In order to solve the problems in the above background technology, the technical solution adopted by the utility model to solve the technical problems is: a one-way valve diaphragm on the air filter side, which includes: a valve body, the interior of one end of the valve body is an inlet, the interior of the end of the valve body opposite to the inlet is an outlet, the valve body is provided with a diaphragm reset mechanism at the inlet end, the valve body is provided with a truncated cone diaphragm on the outlet side, and the truncated cone diaphragm is connected to the diaphragm reset mechanism.

[0005] As a preferred technical solution of the utility model, an inner ring opening is arranged inside the valve body between the inlet and the outlet, and a sealing opening is arranged at one end of the inner ring opening at the outlet.

[0006] As a preferred technical solution of the utility model, the diaphragm reset mechanism includes a limit plug, a spring seat, a connecting rod, a diaphragm seat, and a spring body. The limit plug is fixedly connected to the spring seat, the connecting rod is fixedly connected to one end of the spring seat, the connecting rod extends to one side of the sealing port to connect to the diaphragm seat, and the spring body is sleeved on the outside of the spring seat.

[0007] As a preferred technical solution of the utility model, the limit plug is slidably connected to the inner wall of the inlet, the spring body is located between the limit plug and the sealing port, and both sides of the limit plug are hollow structures.

[0008] As a preferred technical solution of the utility model, a diaphragm limiting groove is opened on the outer side of the middle circumference of the diaphragm seat, and the diaphragm seat is sleeved with a truncated cone shaped diaphragm through the diaphragm limiting groove. The outermost circle diameter of the diaphragm seat is the same as the inner circle diameter of the inner ring opening.

[0009] As a preferred technical solution of the utility model, the inner side of the sealing port is in contact with the outer side of the truncated cone-shaped diaphragm, and the truncated cone-shaped diaphragm is made of rubber.

[0010] As a preferred technical solution of the utility model, the inner diameter of the outlet is larger than the outer diameter of the truncated cone diaphragm, and the inner side of the sealing port is a truncated cone structure.

[0011] The utility model has the following advantages: the truncated cone diaphragm and the diaphragm reset mechanism are respectively arranged on both sides of the inner ring opening through the cooperation of the sealing opening on the inner ring opening, so that the truncated cone diaphragm can be more closely attached to the sealing opening;

[0012] Through the sealing port and the truncated cone diaphragm structure, when the sealing port and the truncated cone diaphragm are in a sealed state, if the gas inside the valve body flows in the reverse direction, the truncated cone diaphragm will be pushed to fit tightly against the sealing port, effectively ensuring that the gas will not flow in the reverse direction, thereby improving the sealing performance of the one-way valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the internal structure of a preferred embodiment of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the valve body of the preferred embodiment of the utility model;

[0015] Figure 3 It is a schematic diagram of the diaphragm reset mechanism and the truncated cone diaphragm split structure of the preferred embodiment of the utility model;

[0016] Figure 4 It is a schematic diagram of the limit plug structure of the preferred embodiment of the utility model.

[0017] Explanation of the reference numerals: 1. valve body; 2. inlet; 3. outlet; 4. inner ring opening; 5. sealing opening; 6. limit plug; 7. spring seat; 8. connecting rod; 9. diaphragm seat; 10. limit groove; 11. truncated cone diaphragm; 12. spring body. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] The utility model will be further described below in conjunction with the accompanying drawings.

[0021] Please refer to Figure 1-Figure 4 The utility model is a one-way valve diaphragm on the air filter side, comprising: a valve body 1, an inlet 2 is inside one end of the valve body 1, an outlet 3 is inside the end of the valve body 1 opposite to the inlet 2, a diaphragm reset mechanism is arranged inside the end of the valve body 1 located at the inlet 2, a truncated cone diaphragm 11 is arranged on the side of the valve body 1 located at the outlet 3, and the truncated cone diaphragm 11 is connected to the diaphragm reset mechanism.

[0022] Combination Figure 1 and Figure 2As shown, an inner ring opening 4 is provided inside the valve body 1 between the inlet 2 and the outlet 3, and the inner ring opening 4 is used to limit the spring body 12. The inner ring opening 4 is provided with a sealing opening 5 at one end of the outlet 3, and the sealing opening 5 is used to cooperate with the truncated cone diaphragm 11 for one-way sealing. The diaphragm reset mechanism includes a limit plug 6, a spring seat 7, a connecting rod 8, a diaphragm seat 9, and a spring body 12. The limit plug 6 is fixedly connected to the spring seat 7, the connecting rod 8 is fixedly connected to one end of the spring seat 7, the connecting rod 8 extends to one side of the sealing opening 5 to connect the diaphragm seat 9, and the spring body 12 is sleeved on the outside of the spring seat 7.

[0023] Combination Figure 3 and Figure 4 As shown, the limit plug 6 is slidably connected to the inner wall of the inlet 2, the spring body 12 is located between the limit plug 6 and the sealing port 5, and both sides of the limit plug 6 are hollow structures to facilitate gas flow. A diaphragm limit groove 10 is opened on the outer side of the middle circumference of the diaphragm seat 9, and the diaphragm seat 9 is connected to the truncated cone diaphragm 11 through the diaphragm limit groove 10. The outermost circle diameter of the diaphragm seat 9 is the same as the inner circle diameter of the inner ring 4. The inner side of the sealing port 5 fits with the outer side of the truncated cone diaphragm 11. The truncated cone diaphragm 11 is made of rubber, the inner diameter of the outlet 3 is larger than the outer circle diameter of the truncated cone diaphragm 11, and the inner side of the sealing port 5 is a truncated cone structure.

[0024] Specifically, when the utility model is used, after the gas fills the inlet 2 of the valve body 1 and flows in and out, the diaphragm seat 9 is pushed under the pressure of the gas, and then the diaphragm seat 9 moves together with the connecting rod 8, and then the connecting rod 8 moves together with the spring seat 7, and then the spring seat 7 moves together with the limit plug 6, and then the limit plug 6 compresses the spring body 12, and at the same time, the diaphragm seat 9 moves together with the truncated cone diaphragm 11 toward the outlet 3 away from the sealing port 5, and then the gas can flow to one end of the outlet 3 through the inner ring port 4. When the gas supply stops, similarly, under the elastic force of the spring body 12, the diaphragm seat 9 together with the truncated cone diaphragm 11 can be moved toward the inlet 2, and then the outer side of the truncated cone diaphragm 11 is sealed on the sealing port 5, thereby ensuring that the gas will not flow in the opposite direction, thereby improving the sealing performance of the one-way valve.

[0025] The above are only preferred implementations of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

[0026] Other parts of the present invention not described in detail belong to the prior art and will not be described in detail here.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An air filter side one-way valve diaphragm, comprising: The valve body (1) is characterized in that the interior of one end of the valve body (1) is an inlet (2), the interior of the end of the valve body (1) opposite to the inlet (2) is an outlet (3), a diaphragm reset mechanism is provided inside the end of the valve body (1) located at the inlet (2), and a truncated cone-shaped diaphragm (11) is provided on the side of the valve body (1) located at the outlet (3), and the truncated cone-shaped diaphragm (11) is connected to the diaphragm reset mechanism.

2. The one-way valve diaphragm on the air filter side according to claim 1, characterized in that: An inner ring opening (4) is provided inside the valve body (1) between the inlet (2) and the outlet (3), and a sealing opening (5) is provided at one end of the inner ring opening (4) at the outlet (3).

3. The one-way valve diaphragm on the air filter side according to claim 1, characterized in that: The diaphragm reset mechanism comprises a limit plug (6), a spring seat (7), a connecting rod (8), a diaphragm seat (9), and a spring body (12); the limit plug (6) is fixedly connected to the spring seat (7); the connecting rod (8) is fixedly connected to one end of the spring seat (7); the connecting rod (8) extends to one side of the sealing port (5) to connect to the diaphragm seat (9); and the spring body (12) is sleeved on the outside of the spring seat (7).

4. The air filter side one-way valve diaphragm according to claim 3, characterized in that: The stopper (6) is slidably connected to the inner wall of the inlet (2), the spring body (12) is located between the stopper (6) and the sealing opening (5), and both sides of the stopper (6) are hollow structures.

5. The one-way valve diaphragm on the air filter side according to claim 3, characterized in that: A diaphragm limiting groove (10) is provided on the outer side of the central circumference of the diaphragm seat (9), and the diaphragm seat (9) is sleeved with a truncated cone-shaped diaphragm (11) through the diaphragm limiting groove (10). The outermost circle diameter of the diaphragm seat (9) is the same as the inner circle diameter of the inner ring opening (4).

6. The air filter side one-way valve diaphragm according to claim 2, characterized in that: The inner side of the sealing opening (5) is in contact with the outer side of the truncated cone-shaped diaphragm (11), and the truncated cone-shaped diaphragm (11) is made of rubber.

7. The air filter side one-way valve diaphragm according to claim 2, characterized in that: The inner diameter of the outlet (3) is larger than the outer diameter of the truncated cone-shaped membrane (11), and the inner side of the sealing port (5) is a truncated cone-shaped structure.

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