Sealing joint assembly of pressure gauge

Abstract

The utility model discloses a pressure gauge sealing joint assembly, which relates to the field of pressure gauge sealing and comprises a pressure gauge, the bottom end of the pressure gauge is connected with a threaded rod, and a butt-joint sleeve and a sealing mechanism arranged on the butt-joint sleeve are arranged outside the threaded rod. The sealing mechanism comprises a transmission unit and a sealing unit; the sealing unit is used for improving the sealing performance of the connecting position of the threaded rod and the butt joint sleeve. The transmission unit is used for further providing sealing thrust for the sealing unit. According to the utility model, through the arrangement of the sealing mechanism, in the butt joint process of the threaded rod on the pressure gauge and the butt joint sleeve, the protruding part on the outer wall of the threaded rod makes contact with the stress block to apply downward pressure to one end of the transmission rod, so that the other end of the transmission rod tilts to apply upward thrust to the sealing ring, and the sealing ring abuts against the joint of the threaded rod and the butt joint sleeve; the sealing performance of the threaded rod and the butt joint sleeve is improved, and the sealing performance is further improved.

Description

Technical Field

[0001] This utility model relates to the field of pressure gauge sealing, specifically a pressure gauge sealing joint assembly. Background Technology

[0002] A pressure gauge is an instrument that uses an elastic element as its sensing element to measure and indicate pressures higher than the ambient pressure. The pressure gauge uses the elastic deformation of the sensing element (Bourdon tube, diaphragm, bellows) inside the gauge, and then the conversion mechanism inside the gauge transmits the pressure deformation to the pointer, causing the pointer to rotate to display the pressure.

[0003] In the prior art, when using a pressure gauge, it is necessary to wrap multiple turns of PTFE tape around the outer wall of one end of the pressure gauge before connecting the threaded rod of one end of the pressure gauge to an external valve connector to increase the sealing performance of the pressure gauge. This operation is cumbersome and wastes PTFE tape with each operation. Based on this, the present invention proposes a pressure gauge sealing connector assembly. Utility Model Content

[0004] The purpose of this utility model is to provide a pressure gauge sealing joint assembly in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure gauge sealing joint assembly, including a pressure gauge, a threaded rod connected to the bottom end of the pressure gauge, a mating sleeve provided outside the threaded rod, and a sealing mechanism provided on the mating sleeve; the sealing mechanism includes a transmission unit and a sealing unit; the sealing unit is used to increase the sealing performance at the connection between the threaded rod and the mating sleeve; the transmission unit is used to further provide sealing thrust to the sealing unit.

[0006] As a further embodiment of this utility model: the transmission unit includes a force-bearing block, a movable groove, and a transmission rod; the force-bearing block is vertically slidably installed inside the docking sleeve and extends into the movable groove, the force-bearing block is used to receive the downward pressure from the threaded rod; the movable groove is opened inside the docking sleeve, the movable groove is used to provide space for the rotation of the transmission rod; the transmission rod is rotatably installed on the inner wall of the movable groove and extends into the inner side of the docking sleeve, the transmission rod is used to give the force-bearing ring an upward thrust.

[0007] As a further embodiment of this utility model: the sealing unit includes a threaded groove, a force-bearing ring, a sealing ring, and a guide ring; the threaded groove is formed on the inner wall of the mating sleeve, and the threaded groove is used to provide space for the mating of the mating sleeve; the force-bearing ring is vertically slidably installed above the movable groove on the inner side of the mating sleeve, and the force-bearing ring is used to receive the upward thrust from the movable groove; the sealing ring is fixed to the top of the force-bearing ring, and the sealing ring is used to provide a seal for the mating of the threaded rod and the mating sleeve; the guide ring is fixed to the bottom end of the sealing ring and extends into the interior of the mating sleeve, and the guide ring is used to guide the vertical movement of the sealing ring.

[0008] As a further improvement of this utility model: the interior of the movable groove is formed with a sliding groove for vertical movement of the force-bearing block, and the interior of the movable groove is also provided with a rotating groove for rotation of the transmission rod.

[0009] As a further embodiment of this utility model: the two ends of the movable groove are respectively located below the force-bearing block and the force-bearing ring, and the inside of the threaded groove is formed with a threaded groove that matches the outer wall of the threaded rod.

[0010] As a further improvement of this utility model: the inside of the docking sleeve is provided with a sliding groove for the vertical movement of the guide ring, and the outer wall of the guide ring, sealing ring, and force-bearing ring are all in a ring structure.

[0011] As a further improvement of this utility model, the number of force-bearing blocks is set to two, and the two force-bearing blocks are symmetrically distributed inside the docking sleeve and extend to the top of the docking sleeve.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] By setting a sealing mechanism, during the process of connecting the threaded rod on the pressure gauge with the connecting sleeve, the protrusion on the outer wall of the threaded rod contacts the force block, giving one end of the transmission rod downward pressure, causing the other end of the transmission rod to tilt up and give the sealing ring upward thrust, so that the sealing ring abuts against the connection between the threaded rod and the connecting sleeve, thereby improving the sealing performance between the threaded rod and the connecting sleeve and further enhancing the sealing performance. Attached Figure Description

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the sealing mechanism of this utility model;

[0016] Figure 3 This is a partial enlarged view of point A of this utility model.

[0017] In the diagram: 1. Pressure gauge; 2. Threaded rod; 3. Connecting sleeve; 4. Sealing mechanism; 401. Threaded groove; 402. Force-bearing block; 403. Movable groove; 404. Transmission rod; 405. Force-bearing ring; 406. Sealing ring; 407. Guide ring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-Figure 3 In this embodiment of the present invention, a pressure gauge sealing joint assembly includes a pressure gauge 1, a threaded rod 2 connected to the bottom end of the pressure gauge 1, a mating sleeve 3 disposed on the outside of the threaded rod 2, and a sealing mechanism 4 disposed on the mating sleeve 3; the sealing mechanism 4 includes a transmission unit and a sealing unit; the sealing unit is used to increase the sealing performance at the connection between the threaded rod 2 and the mating sleeve 3; the transmission unit is used to further provide sealing thrust to the sealing unit.

[0020] The transmission unit includes a force-receiving block 402, a movable groove 403, and a transmission rod 404. The force-receiving block 402 is vertically slidably installed inside the docking sleeve 3 and extends into the movable groove 403. The force-receiving block 402 is used to receive the downward pressure from the threaded rod 2. The movable groove 403 is opened inside the docking sleeve 3 and is used to provide space for the rotation of the transmission rod 404. The transmission rod 404 is rotatably installed on the inner wall of the movable groove 403 and extends into the inner side of the docking sleeve 3. The transmission rod 404 is used to give the force-receiving ring 405 an upward thrust.

[0021] The sealing unit includes a threaded groove 401, a force-bearing ring 405, a sealing ring 406, and a guide ring 407. The threaded groove 401 is formed on the inner wall of the mating sleeve 3 and provides space for the mating of the mating sleeve 3. The force-bearing ring 405 is vertically slidably mounted above the movable groove 403 on the inner side of the mating sleeve 3 and receives the thrust from the upward movement of the movable groove 403. The sealing ring 406 is fixed to the top of the force-bearing ring 405 and provides a seal for the mating of the threaded rod 2 and the mating sleeve 3. The guide ring 407 is fixed to the bottom of the sealing ring 406 and extends into the interior of the mating sleeve 3. The guide ring 407 provides guidance for the vertical movement of the sealing ring 406.

[0022] In this embodiment: when pressure testing of the valve is required, a pressure gauge 1 with a threaded rod 2 is inserted into the mating sleeve 3. The threaded groove 401 inside the mating sleeve 3 connects the threaded rod 2 and the pressure gauge 1. During the connection process between the threaded rod 2 and the mating sleeve 3 through the threaded groove 401, the end of the threaded rod 2 continuously approaches the top of the mating sleeve 3. The bottom protrusion of the threaded rod 2 contacts the force-bearing block 402 at the top of the mating sleeve 3. The force-bearing block 402 moves downward along the interior of the movable groove 403 under force. As the force-bearing block 402 moves downward, it contacts one end of the transmission rod 404 below, thus giving the transmission rod 404 a downward squeezing push. The force applied to the transmission rod 404 causes it to rotate along the rotatable connection with the movable groove 403. The other end of the transmission rod 404 will be moved upward under the force. The force-bearing ring 405 located above the other end of the transmission rod 404 will be pushed by the transmission rod 404, causing the sealing ring 406 and guide ring 407 to move upward. This allows the sealing ring 406 to abut against the connection between the threaded rod 2 and the mating sleeve 3, providing a seal. The push from the transmission rod 404 will further increase the seal between the sealing ring 406 and the connection between the threaded rod 2 and the mating sleeve 3. This eliminates the need for manual wrapping of PTFE tape on the outer wall of the threaded rod 2, further improving work efficiency and avoiding waste of resources.

[0023] Please refer to this carefully. Figure 1-Figure 3 The movable groove 403 has a groove inside for vertical movement of the force-bearing block 402. The movable groove 403 also has a rotating groove inside for rotation of the transmission rod 404. The two ends of the movable groove 403 are located below the force-bearing block 402 and the force-bearing ring 405, respectively. The threaded groove 401 has a threaded groove inside that matches the outer wall of the threaded rod 2. The mating sleeve 3 has a groove inside for vertical movement of the guide ring 407. The outer walls of the guide ring 407, the sealing ring 406, and the force-bearing ring 405 are in a ring structure. There are two force-bearing blocks 402. The two force-bearing blocks 402 are symmetrically distributed inside the mating sleeve 3 and extend to the top of the mating sleeve 3.

[0024] In this embodiment: With this structure, after the threaded rod 2 separates from the mating sleeve 3, the force ring 405, sealing ring 406, and guide ring 407 will re-enter the interior of the mating sleeve 3 under their own weight. The port of the mating sleeve 3 can be blocked by a plug to protect the sealing ring 406 and prevent damage to the sealing ring 406 that has been exposed to the outside.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pressure gauge sealing joint assembly, comprising a pressure gauge (1), wherein a threaded rod (2) is connected to the bottom end of the pressure gauge (1), and a mating sleeve (3) is provided on the outside of the threaded rod (2), characterized in that, A sealing mechanism (4) is provided on the docking sleeve (3); the sealing mechanism (4) includes a transmission unit and a sealing unit; the sealing unit is used to increase the sealing performance at the connection between the threaded rod (2) and the docking sleeve (3); the transmission unit is used to provide a further sealing thrust to the sealing unit.

2. The pressure gauge sealing joint assembly according to claim 1, characterized in that, The transmission unit includes a force-receiving block (402), a movable groove (403), and a transmission rod (404); the force-receiving block (402) is vertically slidably installed inside the docking sleeve (3) and extends into the movable groove (403), and the force-receiving block (402) is used to receive the downward pressure from the threaded rod (2); the movable groove (403) is opened inside the docking sleeve (3), and the movable groove (403) is used to provide space for the rotation of the transmission rod (404); the transmission rod (404) is rotatably installed on the inner wall of the movable groove (403) and extends into the inner side of the docking sleeve (3), and the transmission rod (404) is used to give the force-receiving ring (405) an upward thrust.

3. The pressure gauge sealing joint assembly according to claim 1, characterized in that, The sealing unit includes a threaded groove (401), a force-bearing ring (405), a sealing ring (406), and a guide ring (407). The threaded groove (401) is formed on the inner wall of the mating sleeve (3) and provides space for the mating of the mating sleeve (3). The force-bearing ring (405) is vertically slidably mounted above the inner movable groove (403) of the mating sleeve (3) and receives the upward thrust from the movable groove (403). The sealing ring (406) is fixed to the top of the force-bearing ring (405) and provides a seal for the mating of the threaded rod (2) and the mating sleeve (3). The guide ring (407) is fixed to the bottom of the sealing ring (406) and extends into the interior of the mating sleeve (3) and provides guidance for the vertical movement of the sealing ring (406).

4. A pressure gauge sealing joint assembly according to claim 2, characterized in that, The movable groove (403) has a sliding groove inside for the vertical movement of the force-bearing block (402), and the movable groove (403) also has a rotating groove inside for the rotation of the transmission rod (404).

5. A pressure gauge sealing joint assembly according to claim 3, characterized in that, The two ends of the movable groove (403) are located below the force block (402) and the force ring (405), respectively. The inside of the threaded groove (401) is formed with a threaded groove that matches the outer wall of the threaded rod (2).

6. A pressure gauge sealing joint assembly according to claim 3, characterized in that, The inside of the docking sleeve (3) is provided with a sliding groove for the vertical movement of the guide ring (407), and the outer walls of the guide ring (407), sealing ring (406), and force ring (405) are in an overall ring structure.

7. A pressure gauge sealing joint assembly according to claim 2, characterized in that, The number of the force-bearing blocks (402) is set to two, and the two force-bearing blocks (402) are symmetrically distributed inside the docking sleeve (3) and extend to the top of the docking sleeve (3).

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