Stainless steel pressure tapping head
By designing the hollow rod, inflatable rubber ring and the piston ring structure of the stainless steel, the problem of poor sealing during the assembly of the pressure head is solved, and the high -precision pressure detection and cleanliness guarantee of the clean room are realized.
Patent Information
- Application Number
- CN202420947151.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The existing pressure picking heads need to be opened during assembly, resulting in poor sealing and inaccurate pressure measurement, which may lead to pollution in clean rooms and increased monitoring difficulties.
A stainless steel is designed with a hollow rod, an inflatable rubber ring, and a piston ring structure. The seam of the inflatable rubber rot is improved through the expansion of the inflatable rubber ring to improve the sealing.
Effectively improve the sealing of the pressure head, ensure the accuracy of the pressure detection, prevent gas leakage and external pollutants entering the clean room, and enhance the cleanliness of the clean room.
Smart Images
Figure CN222420164U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pressure taking head devices, in particular to a stainless steel pressure taking head. Background Art
[0002] The clean room negative pressure gauge pressure head is a key component in the clean room for measuring and monitoring the negative pressure status in the room. Its design and use play a vital role in maintaining the environmental stability of the clean room, preventing the entry of pollutants, and ensuring the safety of the production process. The clean room negative pressure gauge pressure head is an indispensable part of the clean room environment. It provides important guarantees for maintaining the environmental stability of the clean room and the safety of the production process by accurately measuring and monitoring the indoor pressure status.
[0003] The existing negative pressure gauge pressure head is usually composed of the following main parts: pressure tube, pressure hole, connector, seal, etc. The working principle is as follows: when the pressure in the clean room changes, this change will be captured by the pressure tube through the pressure hole. Since the pressure tube is connected to the negative pressure gauge, the pressure change will be transmitted along the pressure tube to the negative pressure gauge for monitoring. In this way, the operator can understand the pressure conditions in the clean room in real time to ensure the accuracy and reliability of the measurement results.
[0004] The pressure head in the existing technology has the following disadvantages: when assembling the pressure head, a through hole needs to be opened on the wall of the clean room or space, the pressure head needs to be passed through the through hole for assembly, and a sealing ring is installed on the pressure head rod to fill the gap between it and the through hole. However, there are inevitably errors in the size of the through hole. For example, a smaller sealing ring has poor sealing performance and is prone to leakage, resulting in inaccurate pressure measurement, unable to truly reflect the pressure conditions in the clean room, increasing the difficulty of monitoring, and possibly misleading operational judgments. In addition, external pollutants may enter the clean room through the leakage point and destroy the cleanliness. If the sealing ring is larger, it is difficult to assemble. Therefore, a stainless steel pressure head is proposed to address the above problems. Utility Model Content
[0005] In order to make up for the shortcomings of the existing pressure heads, the inevitable errors in the size of the through holes are solved. For example, a smaller sealing ring has poor sealing and is prone to leakage, resulting in inaccurate pressure measurement, unable to truly reflect the pressure conditions in the clean room, increasing the difficulty of monitoring, and possibly misleading operational judgments. In addition, external pollutants may enter the clean room through the leakage point and destroy the cleanliness. If the sealing ring is large, it will be difficult to assemble. A stainless steel pressure head is proposed.
[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: a stainless steel pressure head described in the utility model comprises a hollow rod, one end of the hollow rod is fixedly provided with an end cover, a plurality of annular mounting grooves are provided on the circumferential surface of the hollow rod, an inflatable rubber ring is fixedly provided in the annular mounting groove, a cavity is provided in the hollow rod, a piston ring is slidably provided in the cavity, a movable groove is provided on the hollow rod, a moving rod is fixedly provided on one side of the piston ring, the moving rod slides through the movable groove, a moving block is fixedly provided on the moving rod, a plurality of inflatable rubber rings are connected through a connecting pipe, the cavity is connected through the connecting pipe and the inflatable rubber ring, an assembly thread is provided on the hollow rod, a fixing nut is rotatably provided on the assembly thread through a threaded connection, and through the cooperation between the above structures, the gap can be filled while the pressure head is assembled, so as to improve the sealing performance of the pressure head and ensure the subsequent pressure detection accuracy.
[0007] Preferably, a gasket and a rubber sealing pad are mounted on the hollow rod at a position on one side of the fixing nut close to the end cover, and the fixing reliability and sealing performance are further improved through the cooperation between the gasket and the rubber sealing pad.
[0008] Preferably, an array of rubber sealing rings is fixedly provided on one side of the end cover close to the fixing nut, and the cooperation of the rubber sealing rings further improves the sealing performance and prevents leakage.
[0009] Preferably, a hose connection inverted groove is provided on the circumferential surface of the other end of the hollow rod, and the friction force of the hose set is improved through the cooperation of the hose connection inverted groove.
[0010] Beneficial effects of the utility model:
[0011] The utility model provides a stainless steel pressure taking head. After the hollow rod is inserted into the assembly through hole, the fixed nut pushes the moving block to move during the assembly movement, the moving block drives the moving rod to move into the cavity, the moving rod drives the piston ring to move, the piston ring pushes the air in the cavity to enter the inflatable rubber ring through the connecting pipe, the inflatable rubber ring deforms and expands, and fills the gap between the hollow rod and the assembly through hole. Even if there is an error in the size of the through hole, the sealing performance is not affected, and the gas in the clean room is prevented from leaking through the gap. Moreover, the sealing is carried out synchronously and linked while the pressure taking head is fixedly assembled, so as to improve the subsequent pressure detection accuracy and ensure the cleanliness of the clean room. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0013] Figure 1It is a cross-sectional view of the whole;
[0014] Figure 2 This is a three-dimensional diagram of the structure of the stainless steel pressure head;
[0015] Figure 3 yes Figure 1 A magnified view of the structure at center A;
[0016] Legend:
[0017] 1. Hollow rod; 01. Assembly thread; 2. End cover; 3. Wall panel; 4. Assembly through hole; 5. Annular mounting groove; 6. Inflatable rubber ring; 7. Cavity; 8. Piston ring; 9. Movable groove; 10. Moving rod; 11. Moving block; 12. Connecting pipe; 13. Fixing nut; 14. Gasket; 15. Rubber sealing pad; 16. Rubber sealing ring; 17. Hose connection inverse groove. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] Specific examples are given below.
[0020] See also Figure 1-Figure 3The utility model discloses a stainless steel pressure head, comprising a hollow rod 1, one end of which is fixedly provided with an end cap 2, a plurality of annular mounting grooves 5 are provided on the circumferential surface of the hollow rod 1, an inflatable rubber ring 6 is fixedly provided in the annular mounting groove 5, a cavity 7 is provided in the hollow rod 1, a piston ring 8 is slidably provided in the cavity 7, a movable groove 9 is provided on the hollow rod 1, a moving rod 10 is fixedly provided on one side of the piston ring 8, and the moving rod 10 slides through the movable groove 9. The movable rod 10 is fixed with a movable block 11, and a plurality of inflatable rubber rings 6 are connected through a connecting pipe 12. The cavity 7 is connected through the inflatable rubber ring 6 through the connecting pipe 12. The hollow rod 1 is provided with an assembly thread 01, and a fixing nut 13 is rotatably provided on the assembly thread 01 through a threaded connection. A gasket 14 and a rubber sealing pad 15 are set on the side of the fixing nut 13 close to the end cover 2 on the hollow rod 1. When working, in order to improve the sealing performance of the pressure taking head during assembly, To prevent leakage problems from causing inaccurate pressure measurement, the pressure conditions in the clean room cannot be truly reflected, the difficulty of monitoring is increased, and the operation judgment is misled, and external pollutants may enter the clean room through the leakage point and destroy the cleanliness. First, the staff needs to open an assembly through hole 4 for assembling the pressure head at the detection position of the wall panel 3 in the clean room or space, and then insert the hollow rod 1 into the assembly through hole 4. The staff uses a tool to rotate the fixing nut 13 to move the fixing nut 13 toward the wall panel 3. The fixing nut 13 pushes the gasket 14 and the rubber sealing pad 15 to move, and at the same time pushes the moving block 11 to move. The moving block 11 drives the moving rod 10 to move into the cavity 7. The moving rod 10 drives the piston ring 8 to move. The piston ring 8 pushes the air in the cavity 7 through the connecting pipe 12 into the inflatable rubber ring 6. The inflatable rubber ring 6 deforms and expands to fill the gap between the hollow rod 1 and the assembly through hole 4 to prevent the smaller sealing ring from having poor sealing performance. The gas in the clean room leaks through the gap, reduces the pressure detection accuracy and destroys the cleanliness. The larger sealing ring is difficult to assemble.
[0021] Furthermore, an array of rubber sealing rings 16 are fixedly provided on one side of the end cover 2 close to the fixing nut 13, and a hose connection inverted groove 17 is provided on the circumferential surface of the other end of the hollow rod 1. During operation, in order to further improve the sealing performance of the pressure taking head, the end cover 2 is in contact with the clean room wall panel 3 during assembly. Under the extrusion of the fixing nut 13, the rubber sealing ring 16 is tightly attached to the wall panel 3, further ensuring the sealing performance.
[0022] Working principle: First, the staff needs to open the assembly through hole 4 for assembling the pressure head at the detection position of the wall panel 3 in the clean room or space, and then insert the hollow rod 1 into the assembly through hole 4. The staff uses a tool to rotate the fixing nut 13 to make the fixing nut 13 move toward the wall panel 3. The fixing nut 13 pushes the gasket 14 and the rubber sealing gasket 15 to move, and at the same time pushes the moving block 11 to move. The moving block 11 drives the moving rod 10 to move into the cavity 7. The moving rod 10 drives the piston ring 8 to move, and the piston ring 8 pushes the air in the cavity 7 to enter through the connecting pipe 12. When the pressure head is inserted into the inflatable rubber ring 6, the inflatable rubber ring 6 is deformed and expanded to fill the gap between the hollow rod 1 and the assembly through hole 4, so as to prevent the smaller sealing ring from having poor sealing performance, causing the gas in the clean room to leak through the gap, thereby reducing the pressure detection accuracy and damaging the cleanliness. The larger sealing ring is difficult to assemble, and the auxiliary sealing can be completed synchronously during the fixed assembly. In order to further improve the sealing performance of the pressure taking head, the end cover 2 is in contact with the clean room wall panel 3 during assembly, and under the extrusion of the fixing nut 13, the rubber sealing ring 16 is tightly fitted on the wall panel 3, thereby further ensuring the sealing performance.
[0023] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0024] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
Claims
1. A stainless steel pressure head, characterized in that: The invention comprises a hollow rod (1), one end of which is fixedly provided with an end cover (2), a plurality of annular mounting grooves (5) are provided on the circumferential surface of the hollow rod (1), an inflatable rubber ring (6) is fixedly provided in the annular mounting groove (5), a cavity (7) is provided in the hollow rod (1), a piston ring (8) is slidably provided in the cavity (7), a movable groove (9) is provided on the hollow rod (1), and a movable groove (9) is fixedly provided on one side of the piston ring (8) The movable rod (10) is slidably inserted into the movable groove (9), a movable block (11) is fixedly arranged on the movable rod (10), a plurality of inflatable rubber rings (6) are connected through a connecting pipe (12), the cavity (7) is connected through the inflatable rubber ring (6) through the connecting pipe (12), an assembly thread (01) is provided on the hollow rod (1), and a fixing nut (13) is rotatably arranged on the assembly thread (01) through a threaded connection.
2. A stainless steel pressure tap according to claim 1, characterized in that: A gasket (14) and a rubber sealing pad (15) are sleeved on the hollow rod (1) at a position on one side of the fixing nut (13) close to the end cover (2).
3. The stainless steel pressure tap according to claim 1, characterized in that: A plurality of rubber sealing rings (16) are fixedly arranged on one side of the end cover (2) close to the fixing nut (13).
4. The stainless steel pressure tap according to claim 1, characterized in that: A hose connection inverted groove (17) is provided on the circumferential surface of the other end of the hollow rod (1).