One-way valve

Abstract

The utility model relates to the field of glove boxes, in particular to a one-way valve which comprises a connecting seat, an adjusting seat and a valve plate, the connecting seat is coaxially provided with a ventilation opening, the ventilation opening penetrates through the connecting seat in the axial direction, one end of the adjusting seat is provided with a guide hole, the outer wall of the connecting seat is connected to the groove wall of the guide hole, the outer wall of the adjusting seat is provided with an air outlet, and the valve plate is arranged in the air outlet. The air outlet is communicated with the guide hole, the valve plate slides in the guide hole, and the valve plate is used for covering the air vent. The connecting base is connected to the exhaust pipe of the glove box, when the air pressure in the glove box is larger than the external environment, air in the glove box rushes out from the air vent, the valve plate is jacked open, and the air is exhausted from the air outlet, and when the air pressure in the glove box is smaller than or equal to the external environment, the valve plate automatically resets under the action of gravity and covers the air vent. The probability that external air enters the glove box is reduced, and the magnetic material is protected.

Description

Technical Field

[0001] The present application relates to the field of glove boxes, and in particular to a one-way valve. Background Art

[0002] A glove box is a laboratory device that fills a box with high-purity inert gas and circulates to filter out the active substances in it. NdFeB magnets cannot come into contact with air during molding and compaction, so they are often processed in a glove box.

[0003] In the prior art, a one-way valve is installed on the glove box, and when the air pressure in the glove box is higher than the external environment, the gas can be automatically discharged. However, since the air pressure in the glove box is not high enough, sometimes it cannot rush out of the existing one-way valve. When the air pressure in the glove box is lower than the external environment, if the one-way valve is not closed in time, the air will be easily sucked back into the glove box through the opening of the one-way valve, causing the loss of raw materials and affecting the processing of magnetic materials. Utility Model Content

[0004] In order to protect the magnetic material, the present application provides a one-way valve.

[0005] The one-way valve provided in this application adopts the following technical solution:

[0006] A one-way valve comprises a connecting seat, an adjusting seat and a valve plate, wherein the connecting seat is coaxially provided with an air vent, the air vent axially penetrates the connecting seat, a guide hole is provided at one end of the adjusting seat, the outer wall of the connecting seat is connected to the groove wall of the guide hole, the outer wall of the adjusting seat is provided with an air outlet, the air outlet is connected to the guide hole, the valve plate slides in the guide hole, and the valve plate is used to cover the air vent.

[0007] By adopting the above technical solution, the connecting seat is connected to the exhaust pipe of the glove box. When the air pressure in the glove box is greater than that of the external environment, the gas in the glove box rushes out from the vent, pushes open the valve plate, and the gas is discharged from the outlet. When the air pressure in the glove box is less than or equal to the external environment, the valve plate is automatically reset by gravity, covering the vent, reducing the probability of external air entering the glove box and protecting the magnetic material.

[0008] Preferably, a connecting ring groove is coaxially provided on the outer wall of the connecting seat, and the connecting ring groove extends toward the valve plate to pass through the connecting seat, the groove bottom of the connecting ring groove is connected to the groove wall of the guide hole, and the groove wall of the connecting ring groove facing the valve plate is used for the adjustment seat to abut.

[0009] By adopting the above technical solution, the connecting ring groove limits the installation of the adjusting seat, which makes it easy to install the adjusting seat, improves the convenience of assembling the one-way valve, and facilitates the use of the one-way valve.

[0010] Preferably, the groove bottom of the connecting ring groove is provided with an external thread, the groove wall of the guide hole is provided with an internal thread, and the groove bottom of the connecting ring groove is threadedly connected to the groove wall of the guide hole.

[0011] By adopting the above technical solution, the connecting seat and the adjusting seat are threadedly connected, which is convenient for disassembly and assembly, improves the installation efficiency of the one-way valve, and facilitates maintenance.

[0012] Preferably, a baffle ring groove is coaxially provided at the bottom of the connecting ring groove, and the baffle ring groove extends toward the valve plate to pass through the connecting seat, the diameter of the valve plate is larger than the sum of the radius of the guide hole and the radius of the vent, and the diameter of the valve plate is smaller than the diameter of the guide hole.

[0013] By adopting the above technical solution, the diameter of the valve plate is larger than the sum of the radius of the guide hole and the radius of the vent, so that the valve plate can stably cover the vent. The diameter of the valve plate is smaller than the diameter of the guide hole, which reduces the friction between the valve plate and the wall of the guide hole groove when sliding, making it easier to timely control the opening and closing of the vent and protect the magnetic material.

[0014] Preferably, the distance from the air outlet to the notch of the guide hole is smaller than the width of the bottom of the connecting ring groove.

[0015] By adopting the above technical solution, the gas pushes open the valve plate and overflows to the surroundings, and the gas outlet is connected with the baffle ring groove, so that the gas can be discharged directly from the gas outlet, which is convenient for gas discharge.

[0016] Preferably, a plurality of the air outlets are provided, and the plurality of air outlets are evenly spaced around the axis of the guide hole.

[0017] By adopting the above technical solution, multiple air outlets are convenient for exhaust, and the air outlets are evenly spaced on the adjustment seat, the valve plate is subjected to more uniform force and is not easy to shake, and the valve plate is not easy to get stuck on the groove wall of the guide hole.

[0018] Preferably, it further comprises an adjusting rod, and an adjusting port is provided at one end of the adjusting seat away from the connecting seat, the adjusting port is connected to the guide hole, and the adjusting rod is threadedly connected to the inner wall of the adjusting port.

[0019] By adopting the above technical solution, the movement of the valve plate is limited by controlling the length of the adjusting rod extending into the guide hole, and the distance from the valve plate to the vent is adjusted to adjust the opening of the air outlet. The adjusting rod is threadedly connected to the inner wall of the adjusting opening, and the connection is stable and easy to rotate and adjust.

[0020] Preferably, a ball is fixedly connected to one end of the regulating rod facing the valve plate.

[0021] By adopting the above technical solution, the sphere abuts against the valve plate, which reduces the probability of wear caused by friction between the valve plate and the adjusting rod compared to a non-spherical body. The valve plate is thin, and wear may cause holes, air leaks, or uneven quality. The use of a sphere extends the service life of the valve plate and facilitates the protection of the magnetic material.

[0022] Preferably, it further comprises a handle, which is arranged on the outer periphery of the adjustment seat, and one end of the handle is fixedly connected to the outer wall of the adjustment rod.

[0023] By adopting the above technical solution, it is convenient to rotate the adjusting rod by holding the handle, which makes it convenient for the operator to apply force, improves the operating efficiency, and facilitates adjusting the length of the adjusting rod extending into the guide hole.

[0024] Preferably, it further comprises a sealing ring, the inner wall of the vent is coaxially provided with a mounting ring groove, the mounting ring groove extends toward one end away from the adjustment seat, and the sealing ring is embedded in the mounting ring groove.

[0025] By adopting the above technical solution, gas may enter and exit the glove box from the connection between the connecting seat and the exhaust pipe of the glove box. The sealing ring reduces the probability of gas entering and exiting the glove box. The contact between the outside air and the magnetic material will cause material waste. The use of the sealing ring facilitates the protection of the magnetic material.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. Connect the connector to the exhaust pipe of the glove box. When the air pressure in the glove box is greater than that in the external environment, the gas in the glove box will flow out from the vent, push open the valve, and the gas will be discharged from the outlet. When the air pressure in the glove box is less than or equal to that in the external environment, the valve will automatically reset due to gravity, covering the vent, reducing the probability of external air entering the glove box and protecting the magnetic material.

[0028] 2. The diameter of the valve plate is larger than the sum of the radius of the guide hole and the radius of the vent, so that the valve plate can stably cover the vent. The diameter of the valve plate is smaller than the diameter of the guide hole, which reduces the friction between the valve plate and the wall of the guide hole when sliding, making it easier to control the opening and closing of the vent in time and protect the magnetic material.

[0029] 3. Multiple air outlets are convenient for exhaust, and the air outlets are evenly spaced on the adjustment seat. The valve plate is subjected to more even force and is not easy to shake. The valve plate is not easy to get stuck on the groove wall of the guide hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of a one-way valve.

[0031] Figure 2 It is a schematic diagram of the internal structure of a one-way valve after being cut open.

[0032] Explanation of the reference numerals: 1. Connecting seat; 11. Vent; 12. Connecting ring groove; 121. Blocking ring groove; 122. External thread; 13. Mounting ring groove; 131. Embedded groove; 132. First internal thread; 2. Sealing ring; 3. Adjusting seat; 31. Guide hole; 311. Second internal thread; 32. Air outlet; 33. Adjusting port; 4. Valve plate; 5. Adjusting member; 51. Adjusting rod; 511. Ball; 52. Handle. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-2 This application is described in further detail.

[0034] The present application embodiment discloses a one-way valve. Figure 1 and Figure 2 A one-way valve includes a connecting seat 1, a sealing ring 2, an adjusting seat 3, a valve plate 4 and an adjusting member 5.

[0035] Reference Figure 2 The connecting seat 1 is coaxially provided with a vent 11, and the vent 11 axially penetrates the connecting seat 1, and the outer wall of the connecting seat 1 is coaxially provided with a connecting ring groove 12, and the inner wall of the vent 11 is coaxially provided with a mounting ring groove 13, and the connecting ring groove 12 and the mounting ring groove 13 are respectively close to the two ends of the connecting seat 1, and the connecting ring groove 12 extends to penetrate the connecting seat 1 toward the end away from the mounting ring groove 13, and the mounting ring groove 13 extends to penetrate the connecting seat 1 toward the end away from the connecting ring groove 12, and the groove bottom of the connecting ring groove 12 is provided with an external thread 122, and the groove bottom of the mounting ring groove 13 is provided with a first internal thread 132, the exhaust pipe of the glove box is embedded in the mounting ring groove 13, and the connecting seat 1 is threadedly connected to the exhaust pipe of the glove box. After the connecting seat 1 is installed, the axis of the vent 11 is vertically arranged.

[0036] A baffle ring groove 121 is coaxially provided at the bottom of the connecting ring groove 12. The baffle ring groove 121 is provided on the side of the external thread 122 away from the mounting ring groove 13. The baffle ring groove 121 extends to the end away from the mounting ring groove 13 to penetrate the connecting seat 1. The groove wall of the mounting ring groove 13 away from the baffle ring groove 121 is coaxially provided with an embedding groove 131. The sealing ring 2 is embedded in the embedding groove 131. The end of the sealing ring 2 away from the embedding groove 131 is used to abut the exhaust pipe of the glove box.

[0037] Reference Figure 2 A guide hole 31 is coaxially provided at one end of the adjustment seat 3, and a second internal thread 311 is provided on the inner wall of the groove of the guide hole 31. The connecting seat 1 extends into the guide hole 31, and the adjustment seat 3 is threadedly connected to the connecting seat 1. One end of the adjustment seat 3 facing the connecting seat 1 abuts against the groove wall of the connecting ring groove 12 away from the installation ring groove 13, and the outer diameter of the connecting seat 1 is equal to the outer diameter of the adjustment seat 3.

[0038] The valve disc 4 slides in the guide hole 31. The valve disc 4 is used to cover the vent 11. The diameter of the valve disc 4 is greater than the sum of the radius of the guide hole 31 and the radius of the vent 11, and the diameter of the valve disc 4 is smaller than the diameter of the guide hole 31. The outer wall of the adjustment seat 3 is provided with an air outlet 32, which is connected to the guide hole 31. The distance from the air outlet 32 ​​to the notch of the guide hole 31 is less than the width of the bottom of the connecting ring groove 12. The air outlet 32 ​​is connected to the baffle ring groove 121. The distance from the valve disc 4 to the notch of the guide hole 31 is greater than the distance from the air outlet 32 ​​to the notch of the guide hole 31. There are multiple air outlets 32, and the multiple air outlets 32 are evenly spaced around the axis of the guide hole 31.

[0039] Reference Figure 2 The adjusting member 5 includes an adjusting rod 51 and a handle 52. An adjusting port 33 is coaxially arranged at one end of the adjusting seat 3 away from the connecting seat 1. The adjusting port 33 is connected to the guide hole 31. The outer wall of the adjusting rod 51 is threadedly connected to the inner wall of the adjusting port 33. A ball 511 is fixedly connected to one end of the adjusting rod 51 facing the valve plate 4. The handle 52 is arranged on the outer periphery of the adjusting seat 3. One end of the handle 52 is fixedly connected to the outer wall of the adjusting rod 51. The length direction of the handle 52 is perpendicular to the length direction of the adjusting rod 51.

[0040] The implementation principle of a one-way valve in an embodiment of the present application is as follows: place the valve plate 4 in the guide hole 31, thread the adjustment seat 3 on the connecting seat 1, embed the sealing ring 2 in the embedding groove 131, thread the connecting seat 1 on the exhaust pipe of the glove box, turn the handle 52 to adjust the length of the adjustment rod 51 extending into the guide hole 31, and complete the installation of the one-way valve. When the air pressure in the glove box is greater than the external environment, the gas flows out of the exhaust pipe into the vent 11, lifts the valve plate 4, the valve plate 4 abuts the adjustment rod 51, and the gas is discharged from the outlet 32. The valve plate 4 is used to control the opening of the outlet 32. When the air pressure in the glove box is less than or equal to the external environment, the valve plate 4 falls down under the action of gravity to cover the vent 11.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A one-way valve, characterized in that: The invention comprises a connecting seat (1), an adjusting seat (3) and a valve plate (4); the connecting seat (1) is coaxially provided with an air vent (11), the air vent (11) penetrates the connecting seat (1) along the axial direction, one end of the adjusting seat (3) is provided with a guide hole (31), the outer wall of the connecting seat (1) is connected to the groove wall of the guide hole (31), the outer wall of the adjusting seat (3) is provided with an air outlet (32), the air outlet (32) is connected to the guide hole (31), the valve plate (4) slides in the guide hole (31), and the valve plate (4) is used to cover the air vent (11).

2. A one-way valve according to claim 1, characterized in that: The outer wall of the connecting seat (1) is coaxially provided with a connecting annular groove (12), the connecting annular groove (12) extending toward the valve plate (4) to penetrate the connecting seat (1), the groove bottom of the connecting annular groove (12) being connected to the groove wall of the guide hole (31), and the groove wall of the connecting annular groove (12) facing the valve plate (4) is used for abutment of the adjusting seat (3).

3. A one-way valve according to claim 2, characterized in that: The groove bottom of the connecting ring groove (12) is provided with an external thread (122), the groove wall of the guide hole (31) is provided with an internal thread, and the groove bottom of the connecting ring groove (12) is threadedly connected to the groove wall of the guide hole (31).

4. A one-way valve according to claim 2, characterized in that: A baffle ring groove (121) is coaxially provided at the bottom of the connecting ring groove (12), the baffle ring groove (121) extending toward the valve plate (4) to penetrate the connecting seat (1), the diameter of the valve plate (4) being greater than the sum of the radius of the guide hole (31) and the radius of the vent (11), and the diameter of the valve plate (4) being smaller than the diameter of the guide hole (31).

5. A one-way valve according to claim 4, characterized in that: The distance between the air outlet (32) and the notch of the guide hole (31) is smaller than the width of the bottom of the connecting ring groove (12).

6. A one-way valve according to claim 1, characterized in that: A plurality of the air outlets (32) are provided, and the plurality of air outlets (32) are evenly spaced around the axis of the guide hole (31).

7. A one-way valve according to claim 1, characterized in that: It also comprises an adjusting rod (51); an adjusting port (33) is provided at one end of the adjusting seat (3) away from the connecting seat (1); the adjusting port (33) is connected to the guide hole (31); and the adjusting rod (51) is threadedly connected to the inner wall of the adjusting port (33).

8. A one-way valve according to claim 7, characterized in that: A ball (511) is fixedly connected to one end of the regulating rod (51) facing the valve plate (4).

9. A one-way valve according to claim 8, characterized in that: It also comprises a handle (52), wherein the handle (52) is arranged on the outer periphery of the adjustment seat (3), and one end of the handle (52) is fixedly connected to the outer wall of the adjustment rod (51).

10. A one-way valve according to claim 1, characterized in that: It also comprises a sealing ring (2), the inner wall of the vent (11) is coaxially provided with a mounting ring groove (13), the mounting ring groove (13) extends towards an end away from the adjustment seat (3), and the sealing ring (2) is embedded in the mounting ring groove (13).

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