Vacuum pressure gauge pipeline connecting device

Abstract

The utility model discloses a vacuum pressure gauge pipeline connecting device which comprises a pressure gauge and a pipeline, a first connecting pipe is arranged at the bottom of the pressure gauge, a second connecting pipe is arranged on the pipeline, a first connecting sleeve is arranged on the outer side of the first connecting pipe, and a mounting ring is arranged on the second connecting pipe. A second connecting sleeve is arranged on the outer side of the mounting ring, external threads are arranged on the outer side of the top of the second connecting sleeve, internal threads are arranged on the inner side of the bottom of the first connecting sleeve, a sealing assembly is arranged at the bottom of the mounting ring, and a fixing assembly is arranged on one side of the outer portion of the first connecting sleeve. The first connecting pipe and the second connecting pipe are connected with each other, the clamping bolt is inserted into the clamping opening, so that the threaded connection position is effectively prevented from loosening, even if the threaded position is loosened, the connecting sleeve is pushed through the first spring, the first connecting pipe is made to be pressed on the sealing rubber ring all the time, and the sealing effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pressure gauges, in particular to a vacuum pressure gauge pipeline connecting device. Background Art

[0002] Vacuum pressure gauges use atmospheric pressure as a reference and are used to measure pressures below atmospheric pressure. They are suitable for measuring the vacuum pressure of liquids and gases that are non-explosive, non-crystallizing, non-solidifying, and non-corrosive to copper and copper alloys. They are widely used in gas transportation, pipeline liquids, and sealed containers to measure the pressure of various non-corrosive, non-explosive, non-crystallizing, non-solidifying liquids, gases, steam, and other media.

[0003] When installing, existing vacuum pressure gauges are usually installed on the pipeline through a threaded structure and are equipped with a sealing ring inside to achieve a sealing effect. However, after long-term use, the current structure may have loose threads, or the threads may not be tightened at the beginning, resulting in the internal sealing ring not being sealed tightly enough, affecting the sealing effect, which can easily cause leakage or inaccurate pressure gauge readings. Utility Model Content

[0004] The purpose of the utility model is to provide a vacuum pressure gauge pipeline connecting device to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A vacuum pressure gauge pipeline connection device includes a pressure gauge body and a pipeline body. A first connecting pipe is provided at the bottom of the pressure gauge body, a second connecting pipe is provided on the pipeline body, a first connecting sleeve is provided on the outside of the first connecting pipe, a mounting ring is provided on the second connecting pipe, a second connecting sleeve is provided on the outside of the mounting ring, an external thread is provided on the outside of the top of the second connecting sleeve, an internal thread is provided on the inside of the bottom of the first connecting sleeve, the internal thread and the external thread are threadedly connected, a sealing assembly is provided at the bottom of the mounting ring, the sealing assembly is used to seal the connection between the first connecting pipe and the second connecting pipe, and a fixing assembly is provided on one side of the outside of the first connecting sleeve, the fixing assembly is used to fix the connection between the first connecting sleeve and the second connecting sleeve.

[0007] In a preferred embodiment of the present invention, an annular groove is provided on the inner side of the top of the first connecting sleeve, and a clamping ring is provided on the outer side of the bottom of the first connecting pipe, and the annular groove and the clamping ring are movably connected.

[0008] In a preferred embodiment of the present invention, the sealing assembly includes a first spring, the first spring is connected to the inner bottom of the second connecting sleeve, and a sealing rubber ring is provided on the top of the second connecting pipe.

[0009] In a preferred embodiment of the present invention, a limiting rail is provided above the mounting ring, a limiting block is provided inside the second connecting sleeve, and the limiting block is slidably connected to the limiting rail.

[0010] In a preferred embodiment of the present invention, the fixing assembly includes a hexagonal slot, a hexagonal block is slidably arranged inside the hexagonal slot, a latch is arranged at the bottom of the hexagonal block, and a bayonet is arranged on one side of the outside of the second connecting sleeve, and the latch is assembled and disassembled on the bayonet.

[0011] In a preferred embodiment of the present invention, a second spring is provided on the top of the hexagonal block, and the second spring is connected to the inner top of the hexagonal slot.

[0012] In a preferred embodiment of the present invention, a screw hole is provided on the top of the hexagonal slot, a pull rod is movably provided inside the screw hole, a bolt is provided on the pull rod, and the bolt is threadedly connected to the screw hole.

[0013] In a preferred embodiment of the present invention, a movable bolt is provided at the bottom of the pull rod, a movable opening is provided on the inner side of the hexagonal block, and the movable bolt is movably connected to the movable opening.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention.

[0015] Beneficial effect: the first connecting pipe and the second connecting pipe are connected to each other by connecting the internal thread through the external thread, and after tightening, the sealing rubber ring is attached to the bottom of the first connecting pipe, thereby achieving a sealing effect, and the hexagonal block and the clamping bolt are pulled by the pull rod to drive the clamping bolt into the hexagonal groove, and the bolt is screwed into the screw mouth to fix the clamping bolt, and the bolt is pushed by the second spring to be inserted into the bayonet mouth, that is, the first connecting sleeve cannot rotate, thereby effectively preventing the threaded connection from loosening, even when the thread is loose, the second connecting sleeve and the first connecting sleeve are pushed by the first spring, so that the first connecting pipe is always pressed on the sealing rubber ring, thereby ensuring the sealing effect.

[0016] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the following is a detailed description of the preferred embodiments of the present invention with the accompanying drawings. The specific implementation methods of the present invention are given in detail in the following embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the main structure of a vacuum pressure gauge pipeline connection device;

[0019] Figure 2 This is a schematic diagram of the structure of two connecting pipes in a vacuum pressure gauge pipeline connection device;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of a first connecting sleeve in a vacuum pressure gauge pipeline connection device;

[0021] Figure 4 This is a schematic diagram of the inner structure of the second connecting sleeve in a vacuum pressure gauge pipeline connection device;

[0022] Figure 5 This is a schematic diagram of the connection structure between a hexagonal block and a pull rod in a vacuum pressure gauge pipeline connection device.

[0023] In the figure: 1. Pressure gauge body; 11. First connecting pipe; 12. Retaining ring; 13. Annular groove; 14. Internal thread; 2. Pipe body; 21. Second connecting pipe; 22. Mounting ring; 23. Sealing rubber ring; 24. Limit rail; 25. First spring; 3. First connecting sleeve; 31. Hexagonal groove; 32. Threaded mouth; 33. Hexagonal block; 34. Bolt; 35. Movable mouth; 4. Second connecting sleeve; 41. External thread; 42. Limiting block; 43. Bayonet; 44. Second spring; 45. Pull rod; 5. Movable bolt; 51. Bolt. DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0025] Please refer to Figure 1-Figure 5The utility model provides a vacuum pressure gauge pipeline connection device, including a pressure gauge body 1 and a pipeline body 2. The pressure gauge body 1 is a vacuum pressure gauge, and the pipeline body 2 is a pipeline for testing pressure. A first connecting pipe 11 is provided at the bottom of the pressure gauge body 1, and a second connecting pipe 21 is provided on the pipeline body 2. The first connecting pipe 11 and the second connecting pipe 21 are a connecting structure, that is, the pressure gauge body 1 is installed on the pipeline body 2 through the first connecting pipe 11 and the second connecting pipe 21. A first connecting sleeve 3 is provided on the outside of the first connecting pipe 11, and a mounting ring 22 is provided on the second connecting pipe 21. The mounting ring 22 is fixedly installed on the second connecting pipe 21, and a second connecting sleeve 4 is provided on the outside of the mounting ring 22. The first connecting sleeve 3 and the second connecting sleeve 4 are movably installed.

[0026] An annular groove 13 is provided on the inner side of the top of the first connecting sleeve 3, and a snap ring 12 is provided on the outer side of the bottom of the first connecting tube 11. The annular groove 13 is movably connected to the snap ring 12, that is, the annular groove 13 is clamped on the snap ring 12 and rotates, so that the first connecting sleeve 3 rotates at the bottom of the first connecting tube 11. A limiting rail 24 is provided above the mounting ring 22, and a limiting block 42 is provided on the inner side of the second connecting sleeve 4. The limiting block 42 is slidably connected to the limiting rail 24, that is, the limiting block 42 is clamped in the limiting rail 24 and slides, so that the second connecting sleeve 4 is installed on the outer side above the second connecting tube 21 and slides.

[0027] An external thread 41 is provided on the outer side of the top of the second connecting sleeve 4, and an internal thread 14 is provided on the inner side of the bottom of the first connecting sleeve 3. The internal thread 14 is threadedly connected to the external thread 41. A sealing assembly is provided at the bottom of the mounting ring 22. The sealing assembly is used to seal the connection between the first connecting tube 11 and the second connecting tube 21. The sealing assembly includes a first spring 25. The first spring 25 is connected to the bottom of the inner side of the second connecting sleeve 4. A sealing rubber ring 23 is provided on the top of the second connecting tube 21, that is, the internal thread 14 is connected through the external thread 41, so that the first connecting sleeve 3 is connected to the second connecting sleeve 4, and the first connecting tube 11 and the second connecting tube 21 are connected to each other, and after tightening, the sealing rubber ring 23 is attached to the bottom of the first connecting tube 11, thereby achieving a sealing effect, and the second connecting sleeve 4 and the first connecting sleeve 3 are pushed by the first spring 25, so that the first connecting tube 11 is always pressed on the sealing rubber ring 23, that is, the sealing effect is guaranteed.

[0028] A fixing component is provided on the outer side of the first connecting sleeve 3, and the fixing component is used to fix the connection between the first connecting sleeve 3 and the second connecting sleeve 4. The fixing component includes a hexagonal groove 31, a hexagonal block 33 is slidingly provided inside the hexagonal groove 31, and a bolt 34 is provided at the bottom of the hexagonal block 33. A bayonet 43 is provided on the outer side of the second connecting sleeve 4, and the bolt 34 is disassembled and assembled on the bayonet 43. A second spring 44 is provided on the top of the hexagonal block 33, and the second spring 44 is connected to the top of the inner side of the hexagonal groove 31. A screw 32 is provided on the top of the hexagonal groove 31, and a pull rod 45 is movably provided inside the screw 32. A bolt 51 is provided on the pull rod 45, and the bolt 51 is threadedly connected to the screw 32. A movable bolt is provided at the bottom of the pull rod 45 5. A movable opening 35 is provided on the inner side of the hexagonal block 33. The movable bolt 5 is movably connected to the movable opening 35. The movable bolt 5 is stuck in the movable opening 35 and rotates. That is, when the first connecting sleeve 3 is connected to the second connecting sleeve 4, the hexagonal groove 31 is directly above the clamping bolt 34, that is, the clamping bolt 34 is pushed by the second spring 44 to insert the clamping bolt 34 into the bayonet opening 43, that is, the first connecting sleeve 3 cannot rotate, thereby effectively avoiding loosening of the threaded connection, and when disassembling, the hexagonal block 33 and the clamping bolt 34 are pulled by the pull rod 45, and the clamping bolt 34 is driven to enter the hexagonal groove 31, and the bolt 51 is screwed into the screw hole 32, so as to fix the clamping bolt 34, thereby facilitating disassembly of the structure.

[0029] The working principle of the present invention is as follows: the first connecting tube 11 is connected to the second connecting tube 21, and the first connecting sleeve 3 is rotated at the bottom of the first connecting tube 11 so that the external thread 41 is connected to the internal thread 14, thereby connecting the first connecting sleeve 3 to the second connecting sleeve 4, and the first connecting tube 11 and the second connecting tube 21 are connected to each other. After tightening, the sealing rubber ring 23 is attached to the bottom of the first connecting tube 11, thereby achieving a sealing effect. The hexagonal block 33 and the clamping bolt 34 are pulled by the pull rod 45, and the clamping bolt 34 is driven to enter the hexagonal groove 31, and the bolt 51 is screwed into the screw hole 32, thereby fixing the clamping bolt 34. By loosening the bolt 51 and the second spring 44 pushing the clamping bolt 34, the clamping bolt 34 is inserted into the bayonet 43, that is, the first connecting sleeve 3 cannot rotate, thereby effectively preventing the threaded connection from loosening. Even when the thread is loose, the first spring 25 pushes the second connecting sleeve 4 and the first connecting sleeve 3, so that the first connecting tube 11 is always pressed on the sealing rubber ring 23, that is, the sealing effect is guaranteed.

[0030] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vacuum pressure gauge pipeline connection device, comprising a pressure gauge body (1) and a pipeline body (2), characterized in that: A first connecting pipe (11) is provided at the bottom of the pressure gauge body (1), a second connecting pipe (21) is provided on the pipeline body (2), a first connecting sleeve (3) is provided on the outside of the first connecting pipe (11), a mounting ring (22) is provided on the second connecting pipe (21), a second connecting sleeve (4) is provided on the outside of the mounting ring (22), an external thread (41) is provided on the outside of the top of the second connecting sleeve (4), an internal thread (14) is provided on the inside of the bottom of the first connecting sleeve (3), the internal thread (14) and the external thread (41) are threadedly connected, a sealing assembly is provided at the bottom of the mounting ring (22), the sealing assembly is used to seal the connection between the first connecting pipe (11) and the second connecting pipe (21), a fixing assembly is provided on the outside of the first connecting sleeve (3), the fixing assembly is used to fix the connection between the first connecting sleeve (3) and the second connecting sleeve (4).

2. A vacuum pressure gauge pipeline connection device according to claim 1, characterized in that: An annular groove (13) is provided on the inner side of the top of the first connecting sleeve (3), and a clamping ring (12) is provided on the outer side of the bottom of the first connecting pipe (11), and the annular groove (13) and the clamping ring (12) are movably connected.

3. A vacuum pressure gauge pipeline connection device according to claim 1, characterized in that: The sealing assembly comprises a first spring (25), the first spring (25) is connected to the inner bottom of the second connecting sleeve (4), and a sealing rubber ring (23) is provided on the top of the second connecting pipe (21).

4. A vacuum pressure gauge pipeline connection device according to claim 1, characterized in that: A limiting rail (24) is provided above the mounting ring (22), and a limiting block (42) is provided inside the second connecting sleeve (4), wherein the limiting block (42) is slidably connected to the limiting rail (24).

5. The vacuum pressure gauge pipeline connection device according to claim 1, characterized in that: The fixing assembly comprises a hexagonal slot (31), a hexagonal block (33) is slidably arranged inside the hexagonal slot (31), a latch (34) is arranged at the bottom of the hexagonal block (33), a bayonet (43) is arranged on one side of the outside of the second connecting sleeve (4), and the latch (34) is assembled and disassembled on the bayonet (43).

6. A vacuum pressure gauge pipeline connection device according to claim 5, characterized in that: A second spring (44) is provided on the top of the hexagonal block (33), and the second spring (44) is connected to the top of the inner side of the hexagonal slot (31).

7. A vacuum pressure gauge pipeline connection device according to claim 5, characterized in that: A screw hole (32) is provided at the top of the hexagonal slot (31), a pull rod (45) is movably provided inside the screw hole (32), a bolt (51) is provided on the pull rod (45), and the bolt (51) is threadedly connected to the screw hole (32).

8. A vacuum pressure gauge pipeline connection device according to claim 7, characterized in that: A movable bolt (5) is provided at the bottom of the pull rod (45), a movable opening (35) is provided inside the hexagonal block (33), and the movable bolt (5) is movably connected to the movable opening (35).

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