Pressure switch for protecting air pump

Abstract

The utility model discloses a pressure switch for protecting an air pump, which comprises a pressure switch body, a first threaded pipe is arranged below the pressure switch body, a first connecting pipe is arranged below the first threaded pipe, a fixing pipe is sleeved on the outer side of the first connecting pipe, two sides of the fixing pipe are respectively provided with two symmetrical fixing plates, and the fixing plates are connected with the pressure switch body. A through groove is formed in the position, located between the two fixing plates, of the fixing pipe, a pressing block is arranged between the two fixing plates, a fixing groove matched with the pressing block is formed in the outer side of the first connecting pipe, the lower portion of the fixing pipe is movably connected with a movable pipe, and a second threaded pipe is inserted into the movable pipe; the lower portion of the second threaded pipe is fixedly connected with a second connecting pipe. According to the pressure switch, the length of the connecting pipeline is convenient to adjust, the pressure switch can be connected with an external pipeline through a plurality of pipelines, the pipeline connecting difficulty of the pressure switch is reduced, and the use convenience of the pressure switch is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure switches, in particular to a pressure switch for protecting an air pump. Background Art

[0002] The pressure switch uses a high-precision, high-stability pressure sensor and transmission circuit, and then uses a dedicated CPU modular signal processing technology to detect, display, alarm and control signal output of the medium pressure signal. The pressure switch is widely used to measure and control the gauge pressure and absolute pressure of various gases and liquids, and is an ideal intelligent measurement and control instrument for industrial sites. The pressure switch currently used on the air pump often has certain problems during installation. The reserved pipeline is too short to install the pressure switch in the pipeline well, which increases the difficulty of the pipeline connection of the pressure switch and has certain defects. For this reason, we propose a pressure switch for protecting the air pump. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a pressure switch for protecting an air pump. The utility model solves the problem that the pressure switch currently used on the air pump often has certain problems during installation, that is, the reserved pipeline is too short so that the pressure switch cannot be well installed in the pipeline, which increases the difficulty of installing the pressure switch and has certain defects.

[0004] A pressure switch for protecting an air pump in the utility model comprises a pressure switch body, a first threaded tube is provided below the pressure switch body, a first connecting tube is provided below the first threaded tube, a fixed tube is sleeved on the outer side of the first connecting tube, two symmetrical fixing plates are provided on both sides of the fixed tube, the fixed tube is provided with a through groove between the two fixing plates, a pressure block is provided between the two fixing plates, the pressure block is fixedly connected to a push rod on a side away from the first connecting tube, a fixing groove matching the pressure block is provided on the outer side of the first connecting tube, the fixed tube is movably connected to a movable tube below, a second threaded tube is inserted in the movable tube, an inner wall of the movable tube is provided with an internal thread matching the second threaded tube, and the second threaded tube is fixedly connected to a second connecting tube below.

[0005] In the above solution, a first sealing ring is provided at the end of the first connecting pipe close to the fixed pipe.

[0006] In the above solution, a plurality of equidistantly arranged expansion ribs are provided on the outer side of the second connecting pipe.

[0007] In the above solution, four springs arranged in a matrix are provided at the top of the movable tube, the four springs are fixedly connected to a pressure ring at the bottom, and the pressure ring is fixedly connected to the second sealing ring at the bottom.

[0008] In the above solution, a pull ring is provided on the side of the push rod away from the pressing block.

[0009] In the above solution, a mounting plate is provided on the pressure switch body, and two mounting holes are provided on the upper end of the mounting plate.

[0010] In the above solution, anti-slip grooves are provided on the outer side of the movable tube.

[0011] The advantages and beneficial effects of the utility model are as follows: the utility model provides a pressure switch for protecting an air pump, the first threaded tube and the first connecting tube can be connected to an external pipe separately, the first connecting tube can be stably fixed inside the fixed tube through the mutual cooperation between the pressure block and the fixed groove, so that the first connecting tube and the fixed tube are fixedly connected, the second threaded tube can be moved in the vertical direction through the thread cooperation between the movable tube and the second threaded tube, the length of the second threaded tube and the second connecting tube can be adjusted through the mutual cooperation between the movable tube and the second threaded tube, and the second connecting tube can be connected to an external pipe at the same time. This kind of pressure switch has a simple structure, is easy to operate, and the length of the connecting pipe is easy to adjust. The pressure switch can be connected to the external pipe through multiple pipes, which reduces the difficulty of connecting the pressure switch pipe and improves the convenience of using the pressure switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] 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 in 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.

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of part A of the utility model;

[0016] Figure 4 This is a schematic structural diagram of part B of the utility model.

[0017] In the figure: 1, pressure switch body 2, first threaded tube 3, first connecting tube 4, fixed tube

[0018] 5. Fixed plate 6. Press block 7. Push rod 8. Fixed groove

[0019] 9. First sealing ring 10. Movable tube 11. Second threaded tube 12. Internal thread

[0020] 13. Second connecting pipe 14. Expanding ribs 15. Spring 16. Pressing ring

[0021] 17. Second sealing ring 18. Pull ring 19. Mounting plate 20. Mounting hole

[0022] 21. Through groove 22. Anti-slip pattern DETAILED DESCRIPTION

[0023] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0024] like Figure 1-4 As shown, the utility model is a pressure switch for protecting an air pump, comprising a pressure switch body 1, a first threaded tube 2 is provided below the pressure switch body 1, a first connecting tube 3 is provided below the first threaded tube 2, a fixing tube 4 is sleeved on the outer side of the first connecting tube 3, two symmetrical fixing plates 5 are provided on both sides of the fixing tube 4, the fixing tube 4 is provided with a through groove 21 between the two fixing plates 5, a pressing block 6 is provided between the two fixing plates 5, the pressing block 6 is movably connected to the fixing plate 5 through a pin shaft, the pressing block 6 can be rotated inside the fixing plate 5 through the setting of the pin shaft, the pressing block 6 is fixedly connected to a push rod 7 away from the first connecting tube 3, a fixing groove 8 matching the pressing block 6 is provided on the outer side of the first connecting tube 3, when the push rod 7 is rotated, the push rod 7 drives the pressing block 6 to rotate, and the rotating pressing block 6 rotates into the fixing groove 8, so that the pressing block 6 squeezes the first connecting tube 3, and the pressing block 6 is pressed between the pressing block 6 and the fixing groove 8 By cooperating with each other, the first connecting tube 3 can be stably fixed inside the fixed tube 4, so that the first connecting tube 3 and the fixed tube 4 are fixedly connected, the first threaded tube 2 and the first connecting tube 3 can be connected to the external pipeline separately, the fixed tube 4 is movably connected with the movable tube 10 at the bottom, a second threaded tube 11 is inserted in the movable tube 10, the inner wall of the movable tube 10 is provided with an internal thread 12 matching the second threaded tube 11, the second threaded tube 11 is fixedly connected with the second connecting tube 13 at the bottom, the movable tube 10 and the second threaded tube 11 are threadedly connected, when the movable tube 10 is rotated, the staff holds the second threaded tube 11, and when the movable tube 10 is rotated, the second threaded tube 11 can be moved in the vertical direction through the threaded cooperation between the movable tube 10 and the second threaded tube 11, and the lengths of the second threaded tube 11 and the second connecting tube 13 can be adjusted through the mutual cooperation between the movable tube 10 and the second threaded tube 11.

[0025] A first sealing ring 9 is disposed at an end of the first connecting tube 3 close to the fixing tube 4 . The first sealing ring 9 effectively increases the sealing performance between the first connecting tube 3 and the fixing tube 4 .

[0026] A plurality of equally spaced expansion ribs 14 are disposed on the outer side of the second connecting pipe 13 . The provision of the expansion ribs 14 increases the connection stability between the second connecting pipe 13 and the external pipeline.

[0027] Four springs 15 arranged in a matrix are provided at the top of the movable tube 10, and the four springs 15 are fixedly connected to a pressure ring 16 at the bottom, and the pressure ring 16 is fixedly connected to a second sealing ring 17 at the bottom. When the second threaded tube 11 moves vertically, the spring 15 pushes the pressure ring 16 and the second sealing ring 17 under the elastic force of the spring 15, and the setting of the second sealing ring 17 effectively increases the sealing between the movable tube 10 and the second threaded tube 11.

[0028] A pull ring 18 is provided on the side of the push rod 7 away from the pressing block 6 . The provision of the pull ring 18 makes it easier to pull the push rod 7 .

[0029] The pressure switch body 1 is provided with a mounting plate 19 , and the upper end of the mounting plate 19 is provided with two mounting holes 20 , through which the pressure switch body 1 can be fixedly installed.

[0030] The outer side of the movable tube 10 is provided with anti-skid patterns 22 , which effectively increase the friction between the palm and the movable tube 10 , thereby making it easier to rotate the movable tube 10 .

[0031] Specifically, in the present utility model, the first threaded tube 2 and the first connecting tube 3 can be connected to the external pipe separately. When the push rod 7 is rotated, the push rod 7 drives the pressure block 6 to rotate. The rotating pressure block 6 rotates to the inside of the fixed groove 8, so that the pressure block 6 squeezes the first connecting tube 3. Through the mutual cooperation between the pressure block 6 and the fixed groove 8, the first connecting tube 3 can be stably fixed inside the fixed tube 4, so that the first connecting tube 3 and the fixed tube 4 are fixedly connected. When the movable tube 10 is rotated, the staff holds the second threaded tube 11. When the movable tube 10 is rotated, the second threaded tube 11 can be moved in the vertical direction through the thread cooperation between the movable tube 10 and the second threaded tube 11. Through the mutual cooperation between the movable tube 10 and the second threaded tube 11, the lengths of the second threaded tube 11 and the second connecting tube 13 can be adjusted. The second connecting tube 13 can also be connected to the external pipe. The pressure switch has more connection options by connecting the pipes located at different positions to the external pipe.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure switch for protecting an air pump, comprising a pressure switch body (1), characterized in that: A first threaded tube (2) is provided below the pressure switch body (1), a first connecting tube (3) is provided below the first threaded tube (2), a fixed tube (4) is sleeved on the outer side of the first connecting tube (3), two symmetrical fixing plates (5) are provided on both sides of the fixing tube (4), a through groove (21) is provided on the fixing tube (4) between the two fixing plates (5), a pressing block (6) is provided between the two fixing plates (5), the pressing block (6) is fixedly connected to the push rod (7) on the side away from the first connecting tube (3), a fixing groove (8) matching the pressing block (6) is provided on the outer side of the first connecting tube (3), the fixed tube (4) is movably connected to the movable tube (10) below, a second threaded tube (11) is inserted into the movable tube (10), the inner wall of the movable tube (10) is provided with an internal thread (12) matching the second threaded tube (11), and the second threaded tube (11) is fixedly connected to the second connecting tube (13) below.

2. A pressure switch for protecting an air pump according to claim 1, characterized in that: A first sealing ring (9) is provided at the end of the first connecting pipe (3) close to the fixed pipe (4).

3. A pressure switch for protecting an air pump according to claim 1, characterized in that: The outer side of the second connecting pipe (13) is provided with a plurality of equidistantly arranged expansion ribs (14).

4. A pressure switch for protecting an air pump according to claim 1, characterized in that: The top of the movable tube (10) is provided with four springs (15) arranged in a matrix, the bottoms of the four springs (15) are fixedly connected to a pressure ring (16), and the bottom of the pressure ring (16) is fixedly connected to a second sealing ring (17).

5. A pressure switch for protecting an air pump according to claim 1, characterized in that: A pull ring (18) is provided on the side of the push rod (7) away from the pressing block (6).

6. A pressure switch for protecting an air pump according to claim 1, characterized in that: The pressure switch body (1) is provided with a mounting plate (19), and the upper end of the mounting plate (19) is provided with two mounting holes (20).

7. A pressure switch for protecting an air pump according to claim 1, characterized in that: The outer side of the movable tube (10) is provided with anti-slip grooves (22).

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