Valve with good sealing performance

Abstract

The utility model discloses a valve with good sealing performance, which belongs to the technical field of valves and comprises a water inlet pipe, a water outlet pipe communicated and connected with the water inlet pipe, external threads arranged at two ends of the water inlet pipe and the water outlet pipe and a valve body connected with the water inlet pipe. The end, away from the valve body, of the water inlet pipe is in threaded connection with a first connector, a conical guide face is arranged in an inner cavity of the first connector, the end, close to the first connector, of the water outlet pipe is in threaded connection with a second connector, and a copper core of a tubular structure is installed on the inner side of the first connector. The copper core extends to the inner side of the second connector, after the valve body is closed, the water pressure is gradually reduced, the sealing steel ball is reset through the elastic acting force of the spring, the second sealing rubber ring is used for filling a gap of the combination portion of the second sealing rubber ring and the copper core, leakage is prevented, and therefore the overall sealing effect of the valve can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and more particularly to a valve with good sealing performance. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters of the conveyed medium (temperature, pressure, and flow). Based on their function, they can be categorized as shutoff valves, check valves, and regulating valves. Valves are control components in fluid conveying systems, performing functions such as shutoff, regulation, flow diversion, backflow prevention, pressure stabilization, flow diversion, and overflow pressure relief. Valves used in fluid control systems come in a wide variety of types and specifications, from the simplest shutoff valve to the most complex valves used in automated control systems.

[0003] An existing patent for a handwheel valve, patent announcement number CN205315824U, is different from the traditional method of fixedly connecting the handwheel and the valve shaft. It is not only compact in design and simple in structure, suitable for valves of different diameters, and effectively extends the service life of the diaphragm, but also cleverly utilizes the axial movement of the valve shaft relative to the handwheel to display the opening and closing status of the valve, making valve position observation convenient and intuitive, and easy to install and operate.

[0004] However, the sealing mechanism of the traditional valve in patent announcement number CN205315824U usually uses a sealing rubber ring as a seal on the inner side of the valve body. Its sealing structure is simple, and long-term wear causes gaps to appear at the joints of the sealing rubber ring, thereby affecting its sealing effect. Therefore, we propose a valve with good sealing performance to solve the above problems. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In response to the problems existing in the prior art, the purpose of the present utility model is to provide a valve with good sealing performance. After the valve body is closed, the water pressure gradually decreases, the elastic force of the spring is used to reset the sealing steel ball, and the second sealing rubber ring is used to fill the gap between the valve and the copper core to prevent leakage, thereby improving the overall sealing effect of the valve.

[0007] 2. Technical solution

[0008] In order to solve the above problems, the present invention adopts the following technical solutions.

[0009] A valve with good sealing performance, comprising a water inlet pipe, a water outlet pipe conductively connected to the water inlet pipe, external threads provided at both ends of the water inlet pipe and the water outlet pipe, and a valve body connected to the water inlet pipe, wherein the end of the water inlet pipe away from the valve body is threadedly connected to a first connector, and the inner cavity of the first connector is provided with a tapered guide surface;

[0010] One end of the water outlet pipe close to the first connector is threadedly connected to a second connector;

[0011] A copper core in a tubular structure is installed on the inner side of the first connector, and the copper core extends to the inner side of the second connector, and second sealing rubber rings are embedded at both ends of the copper core;

[0012] A sealing steel ball is installed on the inner side of the first connector and the second connector to abut against the second sealing rubber ring;

[0013] The outer side of the sealing steel ball is connected with a spring, and the spring is respectively in contact with the water inlet pipe and the water outlet pipe;

[0014] A connecting sleeve is rotatably connected to the outer side of the second connecting head, and the connecting sleeve is connected to the first connecting head.

[0015] Furthermore, the copper core is integrally formed with a first limiting portion on the outer wall of the first connector;

[0016] The inner cavity of the first connector is integrally formed with a second limiting portion that abuts against the first limiting portion.

[0017] Furthermore, a first sealing rubber ring is installed between the first limiting portion and the second limiting portion.

[0018] Furthermore, the inner side of the sealing steel ball is provided with a hollow structure, and the outer diameter of the sealing steel ball is larger than the inner diameter of the copper core.

[0019] Furthermore, the outer wall of the first connector is provided with an external thread.

[0020] Furthermore, the inner wall of the connecting sleeve is provided with an internal thread screwed to the external thread;

[0021] Furthermore, the connection portion between the water inlet pipe and the first connector, the connection portion between the water outlet pipe and the second connector, and the connection portion between the connecting sleeve and the first connector are all wrapped with sealing tape.

[0022] 3. Beneficial effects

[0023] Compared with the prior art, the advantages of the present invention are:

[0024] (1) In this solution, after the valve body is opened, water flows into the inner side of the first connector through the water inlet pipe under the action of pressure, and under the guidance of the conical guide surface, the water flows back to push open the sealing steel ball located on the inner side of the first connector, and the water flows into the inner side of the copper core, and then pushes open the sealing steel ball located on the inner side of the second connector, and finally is discharged through the water outlet pipe. When the valve body is closed, the water pressure gradually decreases, and the elastic force of the spring is used to reset the sealing steel ball, and the second sealing rubber ring is used to fill the gap between the joint and the copper core to prevent leakage, thereby improving the overall sealing effect of the valve.

[0025] (2) In this solution, the first sealing rubber ring is used to fill the gap at the junction of the first limiting part and the second limiting part, thereby improving the sealing effect and avoiding leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0027] Figure 2 This is a side view of the first connector of the present invention;

[0028] Figure 3 This is a schematic cross-sectional view of the AA portion of the first connector of the present invention;

[0029] Figure 4 This is a schematic diagram of the external structure of the first connector of the present invention.

[0030] Description of the numbers in the figure:

[0031] 1. Water inlet pipe; 2. Water outlet pipe; 3. External thread; 4. First connector; 5. Conical guide surface; 6. Second connector; 7. Copper core; 8. First sealing rubber ring; 9. Second sealing rubber ring; 10. Sealing steel ball; 11. Spring; 12. Connecting sleeve; 13. Valve body. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] Example:

[0034] See also Figure 1-4A valve with good sealing performance includes an inlet pipe 1, an outlet pipe 2 connected to the inlet pipe 1, external threads 3 provided at both ends of the inlet pipe 1 and the outlet pipe 2, and a valve body 13 connected to the inlet pipe 1. The end of the inlet pipe 1 away from the valve body 13 is threadedly connected to a first connector 4, and the inner cavity of the first connector 4 is provided with a tapered guide surface 5;

[0035] One end of the water outlet pipe 2 close to the first connector 4 is screwed with a second connector 6;

[0036] A tubular copper core 7 is installed on the inner side of the first connector 4 and extends to the inner side of the second connector 6. Second sealing rubber rings 9 are embedded at both ends of the copper core 7.

[0037] The inner sides of the first connector 4 and the second connector 6 are both installed with a sealing steel ball 10 that abuts against the second sealing rubber ring 9;

[0038] The outer side of the sealing steel ball 10 is connected to a spring 11, and the spring 11 abuts against the water inlet pipe 1 and the water outlet pipe 2 respectively;

[0039] The outer side of the second connector 6 is rotatably connected to a connecting sleeve 12, and the connecting sleeve 12 is connected to the first connector 4;

[0040] It should be noted that when the valve with good sealing performance is in use, after the valve body 13 is opened, water flows into the inner side of the first connecting head 4 through the water inlet pipe 1 under the action of pressure, and under the guidance of the conical guide surface 5, the water flows back to push open the sealing steel ball 10 located on the inner side of the first connecting head 4, and the water flows into the inner side of the copper core 7, and then pushes open the sealing steel ball 10 located on the inner side of the second connecting head 6, and finally is discharged through the outlet pipe 2. When the valve body 13 is closed, the water pressure gradually decreases, and the elastic force of the spring 11 is used to reset the sealing steel ball 10, and the second sealing rubber ring 9 is used to fill the gap at the joint with the copper core 7 to prevent leakage, thereby improving the overall sealing effect of the valve.

[0041] like Figure 3 As shown, the copper core 7 is located on the outer wall of the first connector 4 and is integrally formed with a first limiting portion. The inner cavity of the first connector 4 is integrally formed with a second limiting portion that abuts against the first limiting portion. A first sealing rubber ring 8 is installed between the first limiting portion and the second limiting portion.

[0042] It should be noted that the first sealing rubber ring 8 is used to fill the gap at the junction of the first limiting portion and the second limiting portion, thereby improving the sealing effect and avoiding leakage.

[0043] like Figure 3 As shown, the inner side of the sealing steel ball 10 is provided with a hollow structure, and the outer diameter of the sealing steel ball 10 is larger than the inner diameter of the copper core 7;

[0044] It should be noted that the hollow structure of the sealing steel ball 10 can effectively reduce the deadweight of the sealing steel ball 10 , which is beneficial for the resetting of the sealing steel ball 10 to seal the copper core 7 .

[0045] like Figure 3 、 Figure 4 As shown, the outer wall of the first connector 4 is provided with an external thread, and the inner wall of the connecting sleeve 12 is provided with an internal thread screwed to the external thread;

[0046] It should be noted that this facilitates quick connection between the first connector 4 and the second connector 6 .

[0047] like Figure 3 As shown, the connection between the water inlet pipe 1 and the first connector 4, the connection between the water outlet pipe 2 and the second connector 6, and the connection between the connecting sleeve 12 and the first connector 4 are all wrapped with sealing tape;

[0048] It should be noted that the sealing effect of the connection between the various structural parts is guaranteed.

[0049] During use: after the valve body 13 is opened, water flows into the inner side of the first connector 4 through the water inlet pipe 1 under the action of pressure, and under the guidance of the conical guide surface 5, the water flows back to push open the sealing steel ball 10 located on the inner side of the first connector 4, and the water flows into the inner side of the copper core 7, and then pushes open the sealing steel ball 10 located on the inner side of the second connector 6, and finally is discharged through the water outlet pipe 2. When the valve body 13 is closed, the water pressure gradually decreases, and the elastic force of the spring 11 is used to reset the sealing steel ball 10, and the second sealing rubber ring 9 is used to fill the gap at the joint with the copper core 7 to prevent leakage.

[0050] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed in the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A valve with good sealing performance, comprising a water inlet pipe (1), a water outlet pipe (2) conductively connected to the water inlet pipe (1), external threads (3) provided at both ends of the water inlet pipe (1) and the water outlet pipe (2), and a valve body (13) connected to the water inlet pipe (1), characterized in that: One end of the water inlet pipe (1) away from the valve body (13) is threadedly connected to a first connector (4), and the inner cavity of the first connector (4) is provided with a conical guide surface (5); One end of the water outlet pipe (2) close to the first connector (4) is screwed with a second connector (6); A copper core (7) having a tubular structure is installed on the inner side of the first connector (4), and the copper core (7) extends to the inner side of the second connector (6), and second sealing rubber rings (9) are embedded at both ends of the copper core (7); The inner sides of the first connector (4) and the second connector (6) are both provided with sealing steel balls (10) that abut against the second sealing rubber ring (9); The outer side of the sealing steel ball (10) is connected to a spring (11), and the spring (11) is respectively in contact with the water inlet pipe (1) and the water outlet pipe (2); The outer side of the second connector (6) is rotatably connected to a connecting sleeve (12), and the connecting sleeve (12) is connected to the first connector (4).

2. A valve with good sealing performance according to claim 1, characterized in that: The copper core (7) is integrally formed with a first limiting portion on the outer wall of the first connector (4); The inner cavity of the first connector (4) is integrally formed with a second limiting portion that abuts against the first limiting portion.

3. A valve with good sealing performance according to claim 2, characterized in that: A first sealing rubber ring (8) is installed between the first limiting portion and the second limiting portion.

4. A valve with good sealing performance according to claim 1, characterized in that: The inner side of the sealing steel ball (10) is provided with a hollow structure, and the outer diameter of the sealing steel ball (10) is larger than the inner diameter of the copper core (7).

5. A valve with good sealing performance according to claim 1, characterized in that: The outer wall of the first connecting head (4) is provided with an external thread.

6. A valve with good sealing performance according to claim 5, characterized in that: The inner wall of the connecting sleeve (12) is provided with an internal thread that is threadedly connected to the external thread.

7. A valve with good sealing performance according to claim 1, characterized in that: The connection portion between the water inlet pipe (1) and the first connector (4), the connection portion between the water outlet pipe (2) and the second connector (6), and the connection portion between the connecting sleeve (12) and the first connector (4) are all wrapped with sealing tape.

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