One-way valve with good sealing performance

Abstract

The utility model relates to the technical field of one-way valves, in particular to a one-way valve with good sealing performance, which comprises a valve body, a first connecting plate is fixed at the bottom end of the valve body, a second connecting plate is fixed at the top end of the valve body, and the top end of the valve body is connected with a sealing cylinder. The one-way valve has the advantages that the sealing performance between the piston and the first connecting plate at the bottom end of the valve body can be improved, and therefore the sealing performance of the one-way valve is improved; sealing and anti-collision protection are provided for the air outlet pipe through the sealing plug, the sealing block and the sealing cylinder, leakage of the air outlet pipe caused by expansion or collision damage of compressed air is avoided, and the air outlet 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 a one-way valve with good sealing performance. Background Art

[0002] The check valve is a critical component in scroll compressors, significantly impacting their compression efficiency. It primarily serves as an isolation valve, preventing the compressor's piston from drawing in previously compressed air during the suction process. The check valve also protects the scroll compressor, effectively preventing damage from high-pressure backflow.

[0003] Scroll compressors have attracted attention due to their high efficiency, low noise and balanced operation. A scroll compressor is a positive displacement compressor whose compression part consists of an orbiting scroll and a stationary scroll.

[0004] For example, the prior art Chinese patent publication number "CN205977695U" provides a one-way valve with good sealing performance, including a valve seat body and a valve disc, an air flow channel is provided inside the valve seat body, the valve disc is located in the air flow channel, an air flow hole is provided in the center of the valve disc, protrusions are provided on the left and right sides of the upper end of the valve disc, a fixed boss is provided below the valve disc, the fixed boss matches the air flow hole, a telescopic device is provided above the valve disc, the telescopic device includes a fixed column and a telescopic rod, and a spring column is provided on the outer side of the telescopic rod.

[0005] The device makes the use of the one-way valve more convenient and simple through the design of the telescopic device, and improves the safety performance of the scroll compressor. The one-way valve can not only open and close the valve according to the flow of air, but also the valve plate can be reset by relying on the rebound force of the spring column, effectively preventing gas backflow. At the same time, the design of the flow stabilizer can not only make the airflow delivery more stable, but also reduce the noise during airflow delivery.

[0006] The existing one-way valves with good sealing performance fail to have a good sealing structure between the piston and the bottom end of the valve body at the air inlet position, which can easily lead to looseness and gaps between the piston and the bottom end of the valve body, resulting in reduced sealing of the one-way valve, affecting the sealing use of the one-way valve. At the same time, at the air outlet of the one-way valve, the circulation and expansion of compressed air can easily cause cracks and gaps in the air outlet structure, resulting in leakage in the air outlet structure and reducing the sealing performance of the one-way valve. Utility Model Content

[0007] The purpose of the utility model is to solve the shortcomings of the prior art in that a good sealing structure is not provided between the piston and the bottom end of the valve body at the air inlet position, which easily leads to looseness and gaps between the piston and the bottom end of the valve body, thereby reducing the sealing performance of the one-way valve, and to propose a one-way valve with good sealing performance.

[0008] To achieve the above objectives, the present invention provides the following technical solutions:

[0009] When unclamping said control button, under the effect of the compression spring and the bubble holding vessel internal pressure that shaves, combine closely in the interior of the valve body with the outer cover of described valve body, and burble goes out control, and the described sealing load is increased. When unclamping said control button, under the effect of the compression spring and the bubble holding vessel internal pressure that shaves, and the sealing load is increased. When unclamping said control button, under the effect of the compression spring and the bubble holding vessel internal pressure that shaves,

[0010] Furthermore, the interior of the sealing cylinder is filled with a sealing block, a pipe passing groove is opened in the middle of the sealing block, and the air outlet pipe passes through the pipe passing groove tightly.

[0011] Furthermore, the valve body and the sealing cylinder are both cylindrical structures, and the first connecting plate and the second connecting plate are both flange plate structures.

[0012] Furthermore, the guide groove is a long rectangular groove structure, and its length is less than the height of the valve body, and it is evenly distributed on the inner surface of the valve body. The guide block is a rectangular structure, and the piston is a circular structure, and a gap is set between the outer side and the inner surface of the valve body.

[0013] Furthermore, the diameter of the air inlet hole is smaller than the diameter of the piston, and the sealing groove is a circular groove structure, which is evenly distributed on the top of the first connecting plate, and its depth is smaller than the thickness of the first connecting plate.

[0014] Furthermore, the sealing ring is annular in structure and is made of sealing rubber and is evenly distributed at the bottom end of the piston. It is tightly inserted into the sealing groove, and the bottom end of the piston abuts against the top end of the first connecting plate.

[0015] Furthermore, the spring is arranged vertically, the sealing plug is a circular structure, and is sealed on the top end of the valve body, and is arranged parallel to the piston, and is sealed on the bottom end of the sealing cylinder, and the bottom end of the outlet pipe is inserted into the interior of the spring.

[0016] Furthermore, the sealing block is a cylindrical structure and is made of sealing rubber material, and is tightly inserted into the interior of the sealing cylinder. The pipe groove is a cylindrical groove structure and is vertically arranged. The air outlet pipe is a long straight pipe structure and is vertically arranged.

[0017] The utility model provides a one-way valve with good sealing performance, which has the following beneficial effects:

[0018] 1. In the utility model, inside the valve body, the piston moves along the guide groove through the guide block, and a spring is arranged between the piston and the fixed sealing plug, so that the spring elastically presses the bottom end of the piston against the top end of the first connecting plate at the bottom end of the valve body. Moreover, the sealing ring at the bottom end of the piston is tightly inserted into the sealing groove at the top end of the first connecting plate. Therefore, the sealing performance between the piston and the first connecting plate at the bottom end of the valve body can be improved, thereby improving the sealing performance of the one-way valve.

[0019] 2. The utility model provides a sealing cylinder at the top of the valve body, and a sealing block is provided inside the sealing cylinder. Therefore, after the bottom end of the outlet pipe passes through the sealing plug, it is inserted into the valve body, and the middle part passes through the sealing block inside the sealing cylinder and protrudes the sealing cylinder outward, so that air can be discharged to the outside. Therefore, the sealing plug, the sealing block and the sealing cylinder provide sealing and anti-collision protection for the outlet pipe, avoiding leakage of the outlet pipe caused by expansion or collision of compressed air, thereby improving the sealing performance of the one-way valve outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 For this utility model Figure 1 Schematic diagram of the overall structure;

[0022] Figure 3 For this utility model Figure 1 A schematic diagram of the guide groove structure;

[0023] Figure 4 For this utility model Figure 1 Schematic diagram of the sealing cylinder structure;

[0024] Figure 5 For this utility model Figure 1 A schematic structural diagram of a first connecting plate portion;

[0025] Figure 6 For this utility model Figure 1 Schematic diagram of the piston and exhaust pipe structure.

[0026] In the figure: 1. First connecting plate; 2. Valve body; 3. Second connecting plate; 4. Sealing cylinder; 5. Air outlet pipe; 6. Air inlet hole; 7. Guide groove; 8. Pipe threading groove; 9. Sealing block; 10. Sealing groove; 11. Guide block; 12. Sealing ring; 13. Piston; 14. Spring; 15. Sealing plug. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Example

[0028] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 The one-way valve with good sealing performance shown in the figure includes a valve body 2, a first connecting plate 1 is fixed to the bottom end of the valve body 2, a second connecting plate 3 is fixed to the top end of the valve body 2, and a sealing cylinder 4 is connected to the top end of the valve body 2. The valve body 2 and the sealing cylinder 4 are both cylindrical structures, and the first connecting plate 1 and the second connecting plate 3 are both flange plate structures.

[0029] An air outlet pipe 5 passes through the interior of the sealing cylinder 4, a guide groove 7 is provided on the inner surface of the valve body 2, a piston 13 is slidably installed inside the valve body 2, a guide block 11 is fixed to the side of the piston 13, and the guide block 11 is slidably inserted into the guide groove 7, an air inlet hole 6 is provided in the middle of the first connecting plate 1, a sealing groove 10 is provided at the top of the first connecting plate 1 and at a position outside the air inlet hole 6, a sealing ring 12 is fixed to the bottom end of the piston 13, a spring 14 is connected to the middle of the top end of the piston 13, and the top end of the spring 14 is connected to a sealing plug 15 fixed to the top end of the valve body 2, and the bottom end of the air outlet pipe 5 passes downward through the bottom end of the sealing plug 15.

[0030] Inside the valve body 2, the piston 13 moves along the guide groove 7 through the guide block 11, and a spring 14 is arranged between the piston 13 and the fixed sealing plug 15, so that the spring 14 pushes the bottom end of the piston 13 to press against the top end of the first connecting plate 1 at the bottom end of the valve body 2. Moreover, the sealing ring 12 at the bottom end of the piston 13 is tightly inserted into the sealing groove 10 at the top end of the first connecting plate 1. Therefore, the sealing performance between the piston 13 and the first connecting plate 1 at the bottom end of the valve body 2 can be improved, thereby improving the sealing performance of the one-way valve.

[0031] The guide groove 7 is a long rectangular groove structure, and its length is less than the height of the valve body 2. It is evenly distributed on the inner surface of the valve body 2. The guide block 11 is a rectangular structure, and the piston 13 is a circular structure, and a gap is set between the outer side and the inner surface of the valve body 2.

[0032] The diameter of the air inlet 6 is smaller than the diameter of the piston 13 . The sealing groove 10 is a circular groove structure, which is evenly distributed on the top of the first connecting plate 1 , and its depth is smaller than the thickness of the first connecting plate 1 .

[0033] The sealing ring 12 is annular in structure and is made of sealing rubber. It is evenly distributed at the bottom end of the piston 13 and is tightly inserted into the sealing groove 10 . The bottom end of the piston 13 abuts against the top end of the first connecting plate 1 .

[0034] The spring 14 is arranged vertically, the sealing plug 15 is a circular structure, and is sealed to the top end of the valve body 2, and is arranged parallel to the piston 13, and is sealed to the bottom end of the sealing cylinder 4, and the bottom end of the outlet pipe 5 is inserted into the interior of the spring 14. Example

[0035] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 The one-way valve with good sealing performance shown in the figure includes a valve body 2, the bottom end of the valve body 2 is fixed with a first connecting plate 1, the top of the valve body 2 is fixed with a second connecting plate 3, the top of the valve body 2 is connected with a sealing cylinder 4, the interior of the sealing cylinder 4 is passed through an air outlet pipe 5, the inner surface of the valve body 2 is provided with a guide groove 7, the interior of the valve body 2 is slidably mounted with a piston 13, the side of the piston 13 is fixed with a guide block 11, the guide block 11 is slidably inserted into the guide groove 7, the middle of the first connecting plate 1 is provided with an air inlet hole 6, the top of the first connecting plate 1 and the position outside the air inlet hole 6 are provided with a sealing groove 10, the bottom end of the piston 13 is fixed with a sealing ring 12, the top middle of the piston 13 is connected with a spring 14, the top of the spring 14 is connected with a sealing plug 15 fixed to the top end of the valve body 2, and the bottom end of the outlet pipe 5 downwardly passes through the bottom end of the sealing plug 15.

[0036] Inside the valve body 2, the piston 13 moves along the guide groove 7 through the guide block 11, and a spring 14 is arranged between the piston 13 and the fixed sealing plug 15, so that the spring 14 pushes the bottom end of the piston 13 to press against the top end of the first connecting plate 1 at the bottom end of the valve body 2. Moreover, the sealing ring 12 at the bottom end of the piston 13 is tightly inserted into the sealing groove 10 at the top end of the first connecting plate 1. Therefore, the sealing performance between the piston 13 and the first connecting plate 1 at the bottom end of the valve body 2 can be improved, thereby improving the sealing performance of the one-way valve.

[0037] The interior of the sealing cylinder 4 is filled with a sealing block 9 , a pipe-penetrating groove 8 is opened in the middle of the sealing block 9 , and the air outlet pipe 5 passes through the pipe-penetrating groove 8 tightly.

[0038] A sealing cylinder 4 is provided at the top of the valve body 2, and a sealing block 9 is provided inside the sealing cylinder 4. Therefore, after the bottom end of the air outlet pipe 5 passes through the sealing plug 15, it is inserted into the valve body 2, and the middle part passes through the sealing block 9 inside the sealing cylinder 4 and protrudes the sealing cylinder 4 outward, so that air can be discharged to the outside. Therefore, the sealing plug 15, the sealing block 9 and the sealing cylinder 4 provide sealing and anti-collision protection for the air outlet pipe 5, avoiding the air outlet pipe 5 from being damaged by the expansion or collision of the compressed air, thereby improving the sealing performance of the one-way valve air outlet.

[0039] The sealing block 9 is a cylindrical structure and is made of sealing rubber, and is tightly inserted into the interior of the sealing cylinder 4. The pipe groove 8 is a cylindrical groove structure and is vertically arranged. The air outlet pipe 5 is a long straight pipe structure and is vertically arranged.

[0040] Working method: Inside the valve body 2, the piston 13 moves along the guide groove 7 through the guide block 11, and a spring 14 is arranged between the piston 13 and the fixed sealing plug 15, so that the spring 14 bounces the bottom end of the piston 13 to press against the top end of the first connecting plate 1 at the bottom end of the valve body 2, and the sealing ring 12 at the bottom end of the piston 13 is tightly inserted into the sealing groove 10 at the top end of the first connecting plate 1. Therefore, the sealing performance between the piston 13 and the first connecting plate 1 at the bottom end of the valve body 2 can be improved, thereby improving the sealing performance of the one-way valve.

[0041] A sealing cylinder 4 is provided at the top of the valve body 2, and a sealing block 9 is provided inside the sealing cylinder 4. Therefore, after the bottom end of the air outlet pipe 5 passes through the sealing plug 15, it is inserted into the valve body 2, and the middle part passes through the sealing block 9 inside the sealing cylinder 4 and protrudes the sealing cylinder 4 outward, so that air can be discharged to the outside. Therefore, the sealing plug 15, the sealing block 9 and the sealing cylinder 4 provide sealing and anti-collision protection for the air outlet pipe 5, avoiding the air outlet pipe 5 from being damaged by the expansion or collision of the compressed air, thereby improving the sealing performance of the one-way valve air outlet.

[0042] The above is only a preferred specific implementation method 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 one-way valve with good sealing performance, comprising a valve body (2), characterized in that: The bottom end of the valve body (2) is fixed with a first connecting plate (1), the top end of the valve body (2) is fixed with a second connecting plate (3), the top end of the valve body (2) is connected with a sealing cylinder (4), the interior of the sealing cylinder (4) is penetrated by an air outlet pipe (5), the inner surface of the valve body (2) is provided with a guide groove (7), the interior of the valve body (2) is slidably mounted with a piston (13), the side of the piston (13) is fixed with a guide block (11), and the guide block (11) is slidably inserted into the guide groove (7). An air inlet hole (6) is provided in the middle of the first connecting plate (1), a sealing groove (10) is provided at the top of the first connecting plate (1) and located outside the air inlet hole (6), a sealing ring (12) is fixed to the bottom end of the piston (13), a spring (14) is connected to the middle of the top end of the piston (13), the top end of the spring (14) is connected to a sealing plug (15) fixed to the top end of the valve body (2), and the bottom end of the air outlet pipe (5) passes downward through the bottom end of the sealing plug (15).

2. A one-way valve with good sealing performance according to claim 1, characterized in that: The interior of the sealing cylinder (4) is filled with a sealing block (9), a pipe-penetrating groove (8) is provided in the middle of the sealing block (9), and the air outlet pipe (5) tightly passes through the pipe-penetrating groove (8).

3. A one-way valve with good sealing performance according to claim 1, characterized in that: The valve body (2) and the sealing cylinder (4) are both cylindrical structures, and the first connecting plate (1) and the second connecting plate (3) are both flange plate structures.

4. A one-way valve with good sealing performance according to claim 1, characterized in that: The guide groove (7) is a long rectangular groove structure, and its length is less than the height of the valve body (2), and it is evenly distributed on the inner surface of the valve body (2). The guide block (11) is a rectangular structure, and the piston (13) is a circular structure, and a gap is set between the outer side and the inner surface of the valve body (2).

5. A one-way valve with good sealing performance according to claim 1, characterized in that: The diameter of the air inlet hole (6) is smaller than the diameter of the piston (13), and the sealing groove (10) is a circular groove structure, which is evenly distributed on the top of the first connecting plate (1), and its depth is smaller than the thickness of the first connecting plate (1).

6. A one-way valve with good sealing performance according to claim 1, characterized in that: The sealing ring (12) is an annular structure and is made of sealing rubber. It is evenly distributed at the bottom end of the piston (13) and is tightly inserted into the interior of the sealing groove (10). The bottom end of the piston (13) abuts against the top end of the first connecting plate (1).

7. A one-way valve with good sealing performance according to claim 1, characterized in that: The spring (14) is vertically arranged, the sealing plug (15) is a circular structure, and is arranged to seal the top end of the valve body (2), and is arranged parallel to the piston (13), and is also arranged to seal the bottom end of the sealing cylinder (4), and the bottom end of the air outlet pipe (5) is inserted into the interior of the spring (14).

8. A one-way valve with good sealing performance according to claim 2, characterized in that: The sealing block (9) is a cylindrical structure and is made of sealing rubber material, and is tightly inserted into the interior of the sealing cylinder (4); the pipe-through groove (8) is a cylindrical groove structure and is vertically arranged; the air outlet pipe (5) is a long straight pipe structure and is vertically arranged.

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