Mute annular one-way valve

Abstract

The utility model belongs to the technical field of one-way valves, and particularly discloses a silent annular one-way valve which comprises an upper cover, a lower cover and a valve element, and the valve element comprises a valve element cover and a valve element seat. A lower sealing cover is arranged on the upper end face of the valve element seat, a plurality of first air holes are formed in the upper end face of the lower sealing cover, and the first air holes communicate with the air inlet channel. The valve element cover is provided with a plurality of vertical air outlet channels, counter bores are formed in the lower ends of the air outlet channels, and spring pressing devices are arranged in the counter bores. An upper sealing cover is arranged on the lower end face of the valve element cover, a plurality of second air holes are formed in the lower end face of the upper sealing cover, the second air holes communicate with the air outlet channel, and the second air holes and the first air holes are arranged in a staggered mode. The one-way valve is sealed through the two sealing covers making contact with each other, the sealing effect is improved, the service life is prolonged, and the one-way valve is particularly suitable for continuous work of gas; by changing the materials of the sealing covers, the noise generated when the two sealing covers make contact can be greatly reduced, and therefore the environmental noise is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of check valves, and particularly relates to a silent ring-shaped check valve. Background Art

[0002] A check valve is a commonly used valve body, and there are various styles of check valves sold on the market at present; in the prior art, the contact end of the check valve is generally made of metal. Such a check valve has a good closing effect when used for liquids, but when used for gases, air leakage is likely to occur during closing; to solve this problem, in the prior art, one method is to increase the smoothness of the contact surface. Although the sealing effect is solved, during continuous operation, certain noise is generated when the valve core contacts the valve body quickly, affecting the working environment; another method is to provide a sealing ring on the contact surface, but the sealing ring is prone to deformation and damage during long-term continuous operation, and the service life of the sealing ring is not high. Summary of the Utility Model

[0003] Aiming at the problems existing in the background art, the utility model provides a silent ring-shaped check valve. The check valve is sealed by two mutually contacting sealing covers, improving the sealing effect and service life.

[0004] To achieve the above object, the utility model adopts the following technical solutions: a silent ring-shaped check valve, including an upper cover, a lower cover and a valve core. The valve core is installed in the middle of the upper cover and the lower cover. The valve core includes a valve core cover and a valve core seat; the valve core cover and the valve core seat are connected by connecting bolts; the valve core seat is provided with a plurality of vertical air inlet channels, and a lower sealing cover is arranged on the upper end surface of the valve core seat. A plurality of first air holes are arranged on the upper end surface of the lower sealing cover, and the first air holes are communicated with the air inlet channels;

[0005] The valve core cover is provided with a plurality of vertical air outlet channels. A counterbore is arranged at the lower end of the air outlet channel, and a spring pressing device is arranged in the counterbore; a plurality of positioning grooves A are arranged on the lower end surface of the valve core cover. An upper sealing cover is arranged on the lower end surface of the valve core cover. A plurality of second air holes are arranged on the lower end surface of the upper sealing cover, and the second air holes are communicated with the air outlet channels. The second air holes are arranged in a staggered manner with the first air holes; a plurality of positioning bosses are arranged on the upper end surface of the upper sealing cover, and the positioning bosses are adapted to the positioning grooves A.

[0006] The upper cover is provided with a plurality of vertical connecting holes A, and the lower cover is provided with a plurality of vertical connecting holes B, and the connecting holes A and the connecting holes B correspond to each other.

[0007] A first sealing ring is arranged on the contact surface between the valve core seat and the upper cover, and a second sealing ring is arranged on the contact surface between the valve core seat and the lower cover.

[0008] The connecting bolt passes through the valve core seat. A gasket is arranged at the lower end of the connecting bolt, and a third sealing gasket is arranged at the junction of the connecting bolt and the upper end of the valve core seat.

[0009] On the upper end face of the lower sealing cover, there are a plurality of countersunk screw holes.

[0010] The spring pressing device is arranged in the counterbore of the air outlet passage. The spring pressing device includes a valve seat and a spring; the valve seat is a circular tube, and a boss is provided at the upper end of the valve seat; the spring is sleeved outside the valve seat, the upper end of the spring contacts the boss of the valve seat, and the lower end of the spring contacts the upper sealing cover.

[0011] Advantages of the present utility model: The present utility model provides a silent ring-shaped one-way valve. This one-way valve is sealed by two mutually contacting sealing covers, improving the sealing effect and service life, and is particularly suitable for continuous operation of gases; by changing the material of the sealing covers, the noise generated when the two sealing covers contact can be greatly reduced, thereby reducing environmental noise. Description of the Drawings

[0012] Figure 1 It is a sectional view of the present utility model.

[0013] Figure 2 It is an enlarged view of part A.

[0014] Figure 3 It is a top view of the upper cover.

[0015] Figure 4 It is a bottom view of the lower cover.

[0016] Figure 5 It is a top view of the upper sealing cover.

[0017] Figure 6 It is a top view of the lower sealing cover.

[0018] In the figure: 1. Upper cover, 2. Lower cover, 3. Spool cover, 4. Spool seat, 5. Upper sealing cover, 51. Second air hole, 52. Positioning boss, 6. Lower sealing cover, 61. First air hole, 62. Countersunk screw hole, 7. Connecting bolt, 8. Nut, 9. First sealing ring, 10. Second sealing ring, 11. Gasket, 12. Third sealing gasket, 13. Valve seat, 14. Spring, 15. Connecting hole A, 16. Connecting hole B, 21. Air inlet, 22. Air inlet passage, 23. Air outlet passage, 24. Air outlet. Detailed Embodiment

[0019] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments; based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope protected by the present utility model.

[0020] The following further elaborates on the specific implementation manners of the present utility model in conjunction with the attached drawings: A silent ring-shaped one-way valve includes an upper cover 1, a lower cover 2, and a valve core. The valve core is installed in the middle of the upper cover 1 and the lower cover 2. The upper cover 1 is provided with a plurality of vertical connection holes A15, and the lower cover 2 is provided with a plurality of vertical connection holes B16. The connection holes A15 and the connection holes B16 correspond to each other; the connection holes B16 are adapted to external devices. During actual use, after using bolts to pass through the connection holes A15 and the connection holes B16, the one-way valve can be fixedly connected to the external device to prevent the one-way valve from vibrating and shifting; the upper cover 1 and the lower cover 2 can be tightly connected together through the bolts installed in the connection holes A15 and the connection holes B16; the valve core includes a valve core cover 3 and a valve core seat 4; the valve core cover 3 and the valve core seat 4 are connected by a connection bolt 7 and a nut 8; a first sealing ring 9 is provided on the contact surface between the valve core seat 4 and the upper cover 1, and a second sealing ring 10 is provided on the contact surface between the valve core seat 4 and the lower cover 2; the first sealing ring 9 and the second sealing ring 10 are made of soft materials, and the first sealing ring 9 and the second sealing ring 10 are used to prevent gas from overflowing from the contact surfaces between the valve core seat 4 and the upper cover 1 and the lower cover 2; the connection bolt 7 passes through the valve core seat 4, a gasket 11 is provided at the lower end of the connection bolt 7, and a third sealing gasket 12 is provided at the junction of the connection bolt 7 and the upper end of the valve core seat 4. The gasket 11 and the third sealing gasket 12 are made of soft materials, and the gasket 11 and the third sealing gasket 12 are used to prevent gas from overflowing between the connection bolt 7 and the valve core seat 4; the valve core seat 4 is provided with a plurality of vertical air inlet channels 22, a lower sealing cover 6 is provided on the upper end surface of the valve core seat 4, and a plurality of first air holes 61 are provided on the upper end surface of the lower sealing cover 6. The first air holes 61 are communicated with the air inlet channels 22. During actual use, the shape and number of the first air holes 61 can be changed according to specific requirements; a plurality of countersunk screw holes 62 are provided on the upper end surface of the lower sealing cover 6; the lower sealing cover 6 is fixedly connected to the valve core seat 4 through bolts; in this embodiment, as Figure 6As shown, there are four countersunk screw holes 62 in total, which can be changed according to the specific usage environment and requirements during actual use; on the lower end face of the valve core cover 3, there are multiple positioning grooves A, and on the upper end face of the upper sealing cover 5, there are multiple positioning bosses 52, and the positioning bosses 52 are adapted to the positioning grooves A; the upper ends of the positioning bosses 52 are arranged in the positioning grooves A, and the positioning bosses 52 can move up and down in the positioning grooves A. At the same time, the positioning bosses 52 can prevent the upper sealing cover 5 from being misaligned when moving up and down; the valve core cover 3 is provided with multiple vertical air outlet channels 23, and the lower ends of the air outlet channels 23 are provided with counterbores, and a spring pressing device is arranged in the counterbores; the spring pressing device is arranged in the counterbores of the air outlet channels 23, and the spring pressing device includes a valve seat 13 and a spring 14; the valve seat 13 is a circular tube, and the upper end of the valve seat 13 is provided with a boss; the spring 14 is sleeved outside the valve seat 13, the upper end of the spring 14 is in contact with the boss of the valve seat 13, and the lower end of the spring 14 is in contact with the upper sealing cover 5; the lower end face of the upper sealing cover 5 is in contact with the upper end face of the lower sealing cover 6 and is pressed by the spring 14; during actual use, mutually engaging tooth-shaped grooves can be arranged on the contact surface between the upper sealing cover 5 and the lower sealing cover 6 to achieve a better sealing effect; the upper sealing cover 5 is arranged on the lower end face of the valve core cover 3, and multiple second air holes 51 are arranged on the lower end face of the upper sealing cover 5, and the second air holes 51 are communicated with the air outlet channels 23, and the second air holes 51 are arranged in a staggered manner with the first air holes 61; during use, when the one-way valve is closed, the upper sealing cover 5 is closely attached to the lower sealing cover 6 under the action of the spring 14 to prevent gas from passing through; when the gas pressure in the air inlet channel 22 increases, the gas pushes the spring 14 up, the one-way valve opens, and the gas enters the first air hole 61 from the second air hole 51; when the pressure at the first air hole 61 increases, the gas presses the upper sealing cover 5, causing the upper sealing cover 5 to drop, and the one-way valve is closed.

[0021] The usage process of the present utility model is as follows: First, install the valve core in the middle of the upper cover 1 and the lower cover 2, and seal it through the first sealing ring 9, the second sealing ring 10, the gasket 11 and the third sealing gasket 12, and then install the installed one-way valve on an external device; during use, gas enters from the air inlet 21 at the lower end of the lower cover 2, enters the air inlet channel 22 of the valve core seat 4 from the air inlet 21, and then enters the second air hole 51 from the air inlet channel 22; at this time, when the one-way valve is closed, the upper sealing cover 5 is closely attached to the lower sealing cover 6 under the action of the spring 14 to prevent gas from passing through; when the gas pressure in the air inlet channel 22 increases, the gas pushes the spring 14 up, the one-way valve opens, and the gas enters the first air hole 61 from the second air hole 51; when the pressure at the first air hole 61 increases, the gas presses the upper sealing cover 5, causing the upper sealing cover 5 to drop, and the one-way valve is closed, achieving the purpose of one-way conduction; the gas passing through the upper sealing cover 5 enters the air outlet channel 23 of the valve core cover 3 and then flows out from the air outlet 24 at the upper end of the upper cover 1.

[0022] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0023] The parts not detailed in the present utility model are the prior art.

Claims

1. A silent annular one-way valve, comprising an upper cover (1), a lower cover (2) and a valve core, wherein the valve core is installed in the middle of the upper cover (1) and the lower cover (2), and is characterized in that: The valve core comprises a valve core cover (3) and a valve core seat (4); the valve core cover (3) and the valve core seat (4) are connected via a connecting bolt (7); the valve core seat (4) is provided with a plurality of vertical air inlet passages (22); a lower sealing cover (6) is provided on the upper end surface of the valve core seat (4); a plurality of first air holes (61) are provided on the upper end surface of the lower sealing cover (6); the first air holes (61) are connected to the air inlet passages (22); The valve core cover (3) is provided with a plurality of vertical air outlets (23), the lower end of the air outlets (23) is provided with a countersunk hole, and a spring pressing device is provided in the countersunk hole; a plurality of positioning grooves A are provided on the lower end surface of the valve core cover (3), an upper sealing cover (5) is provided on the lower end surface of the valve core cover (3), and a plurality of second air holes (51) are provided on the lower end surface of the upper sealing cover (5), the second air holes (51) are connected to the air outlets (23), and the second air holes (51) and the first air holes (61) are arranged in an offset manner; a plurality of positioning bosses (52) are provided on the upper end surface of the upper sealing cover (5), and the positioning bosses (52) are adapted to the positioning grooves A.

2. According to claim 1, a silent annular one-way valve is characterized in that: The upper cover (1) is provided with a plurality of vertical connection holes A (15), and the lower cover (2) is provided with a plurality of vertical connection holes B (16), and the connection holes A (15) and the connection holes B (16) correspond to each other.

3. According to claim 1, a silent annular one-way valve is characterized in that: A first sealing ring (9) is provided on the contact surface between the valve core seat (4) and the upper cover (1), and a second sealing ring (10) is provided on the contact surface between the valve core seat (4) and the lower cover (2).

4. According to claim 1, a silent annular one-way valve is characterized in that: The connecting bolt (7) passes through the valve core seat (4), a gasket (11) is provided at the lower end of the connecting bolt (7), and a third sealing gasket (12) is provided at the junction of the connecting bolt (7) and the upper end of the valve core seat (4).

5. According to claim 1, a silent annular one-way valve is characterized in that: A plurality of countersunk screw holes (62) are provided on the upper end surface of the lower sealing cover (6).

6. The silent annular one-way valve according to claim 1, characterized in that: The spring pressing device is arranged in the countersunk hole of the air outlet passage (23), and comprises a valve seat (13) and a spring (14); the valve seat (13) is a round tube, and a boss is arranged at the upper end of the valve seat (13); the spring (14) is sleeved on the outer side of the valve seat (13), the upper end of the spring (14) contacts the boss of the valve seat (13), and the lower end of the spring (14) contacts the upper sealing cover (5).

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