Double-lip framework seal and air valve thereof

Abstract

The utility model relates to a double-lip framework seal and an air valve thereof. The framework seal comprises a framework and rubber, the framework is a circular ring, the framework is wrapped with the rubber, the inner circumference of the framework is exposed, and the rubber forms a lip edge on each of the upper portion and the lower portion of the framework. The novel balance valve is reasonable in design and simple in structure, the framework plays a role in reinforcing rubber, meanwhile, the balance valve element can be guided (lower guiding is matched with original upper guiding), the balance valve element can move up and down more stably, the sealing effect of a sealing ring on the balance valve element can be improved, the sealing effect is further improved with the assistance of the double-lip design, and the service life of the balance valve element is prolonged. Meanwhile, the balance valve element is small in up-down moving resistance and smooth in movement.

Description

Technical Field

[0001] The utility model relates to a solenoid valve, in particular to a double-lip skeleton seal and an air valve thereof. Background Art

[0002] When the air valve is opened or closed, the internal balancing valve core moves up and down in the sealing ring. The existing sealing ring cannot meet the sealing requirements of the balancing valve core and the sealing effect is poor. Utility Model Content

[0003] The utility model provides a double-lip skeleton seal and a cylinder thereof. The double-lip skeleton seal has good sealing effect and can meet the sealing requirements of a balanced valve core of an air valve.

[0004] The technical solution of this utility model:

[0005] A double-lip skeleton seal comprises a skeleton and rubber; the skeleton is a circular ring, the rubber is wrapped around the skeleton and exposes the inner circumference of the skeleton, and the rubber forms a lip edge on the upper and lower parts of the skeleton.

[0006] A plurality of small holes are evenly distributed around the frame, and the rubber passes through the small holes on the frame.

[0007] An air valve, which is a solenoid valve, has a balancing valve core and a sealing ring. The balancing valve core moves up and down to open or close the air valve. The sealing ring is sleeved on the balancing valve core; the sealing ring is the above-mentioned double-lip skeleton seal;

[0008] The sealing ring: the skeleton (inner periphery) and the balance valve core (outer periphery) are clearance-matched, and the two lips of the rubber are in contact with the outer periphery of the balance valve core respectively.

[0009] The advantages of the utility model are that it has a reasonable design and a simple structure. The skeleton plays a reinforcing role on the rubber and can guide the balancing valve core (the lower guide cooperates with the original upper guide), making the up and down movement of the balancing valve core more stable, helping to improve the sealing effect of the sealing ring. The double-lip design further improves the sealing effect. At the same time, the resistance to the up and down movement of the balancing valve core is small and the movement is smooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a cross-sectional view of the air valve.

[0011] Figure 2 It is a three-dimensional diagram of a double-lip skeleton seal.

[0012] Figure 3 It is the front view of double lip skeleton seal.

[0013] Figure 4 yes Figure 3 Cross-section view in the AA direction.

[0014] Figure 5 yes Figure 4 Cross-section view in the middle BB direction.

[0015] In the figure, the air valve connector 1, the end cover 2, the magnetic isolation tube 3, the push rod 4, the moving iron 5, the magnet ring 6, the magnet 7, the spring 8, the housing 9, the valve body 10, the coil 11, the balance valve core 12, the valve seat 13, the double-lip skeleton seal 14, the skeleton 14-1, the rubber 14-2, and the lip 14-3. DETAILED DESCRIPTION

[0016] like Figure 1-5 As shown, a gas valve, which is a solenoid valve, includes a gas valve connector 1, an end cover 2, a magnetic isolation tube 3, a push rod 4, a moving iron 5, a magnet ring 6, a magnet 7, a spring 8, a housing 9, a valve body 10, a coil 11, a balancing valve core 12, and a valve seat 13; the gas valve connector 1, the end cover 2, the magnetic isolation tube 3, the push rod 4, the moving iron 5, the magnet ring 6, the magnet 7, the spring 8, the housing 9, the valve body 10, the coil 11, the balancing valve core 12, and the valve seat 13 are assembled and connected together, and the balancing valve core 12 moves up and down to open or close the gas valve;

[0017] The double-lip skeleton seal 14 is installed in the solenoid valve, clamped and fixed between the valve body 10 and the valve seat 13, and sleeved on the balance valve core 12;

[0018] The double-lip skeleton seal 14 includes a skeleton 14-1 and a rubber 14-2. The skeleton 14-1 is a circular ring. The rubber 14-2 is wrapped around the skeleton 14-1, exposing the inner periphery of the skeleton 14-1. The rubber 14-2 forms a lip 14-3 on the upper and lower sides of the skeleton 14-1. A plurality of small holes are evenly distributed around the skeleton 14-1. The rubber 14-2 passes through the small holes on the skeleton 14-1. The skeleton 14-1 (inner periphery) and the balancing valve core 12 (outer periphery) are clearance-matched. The lip 14-3 contacts the outer periphery of the balancing valve core 12.

[0019] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A double-lip skeleton seal, comprising a skeleton and rubber; characterized in that: The frame is a ring, the rubber is wrapped around the frame and exposed on the inner circumference of the frame, and the rubber forms a lip on the upper and lower sides of the frame; A plurality of small holes are evenly distributed around the frame, and the rubber passes through the small holes on the frame.

2. A gas valve, the gas valve is a solenoid valve, which has a balance valve core, the balance valve core moves up and down to open or close the gas valve; a sealing ring is installed in the gas valve, the sealing ring is sleeved on the balance valve core; characterized in that, The sealing ring is a double-lip skeleton seal as described in claim 1; The sealing ring has a framework that is clearance-matched with the balancing valve core, and lips that are in contact with the outer periphery of the balancing valve core.

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