Pressure gauge convenient to maintain

Abstract

The utility model discloses a pressure gauge convenient to maintain, which relates to the technical field of pressure gauges and comprises a pressure gauge body, a first connector is mounted in the pressure gauge body, a fixing cylinder is in threaded connection with the outer surface of the first connector, and a first connecting pipe is fixedly connected in the fixing cylinder. A fixing plate is slidably connected to the interior of the fixing cylinder, a filter screen is mounted in the fixing plate, a first connecting plate is fixedly connected to the outer surface of the fixing plate, and the first connecting plate and a second connecting plate can be detached through fixing parts through cooperation of the fixing cylinder, the fixing plate and a sealing ring; the fixing plates for fixing the filter screen can be taken out, workers do not need to disassemble the whole filter screen back and forth during replacement or maintenance and cleaning, the connecting positions of the fixing plates can be sealed through the sealing rings, the stability of the connecting positions during working is guaranteed, and the function of rapidly replacing the filter screen is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure gauges, in particular to a pressure gauge which is easy to maintain. Background Art

[0002] A pressure gauge is an instrument for measuring ambient pressure. The ambient pressure can be understood by reading the internal index of the pressure gauge. It is widely used in various industrial sectors.

[0003] When using a pressure gauge in industry, a filter needs to be installed inside the pressure gauge. The filter can filter dust and impurities in the fluid entering the pressure gauge to prevent the impurities inside the pressure gauge from affecting the normal operation of the pressure gauge. When in use, the filter is usually installed at the threaded connection of the pressure gauge using a special connector. When in use, the working status of the filter needs to be frequently checked and the filter needs to be replaced in time. Since the connector of the filter is usually installed on the outside of the pressure gauge, the connector of the filter needs to be disassembled when replacing it, and the pressure gauge also needs to be disassembled. When disassembling, the position of the pressure gauge needs to be adjusted back and forth. Disassembling the pressure gauge back and forth will affect the sealing of the pressure gauge connection, and it is very inconvenient to disassemble multiple components for maintenance when performing a single replacement. For this reason, we propose a pressure gauge that is easy to maintain. Utility Model Content

[0004] The main purpose of the utility model is to provide a pressure gauge that is easy to maintain and can effectively solve the problems mentioned in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A pressure gauge that is easy to maintain comprises a pressure gauge body, a connector 1 is installed inside the pressure gauge body, a fixing cylinder is threadedly connected to the outer surface of the connector 1, a connecting pipe 1 is fixedly connected to the inside of the fixing cylinder, a fixing plate is slidably connected to the inside of the fixing cylinder, a filter is installed inside the fixing plate, a connecting plate 1 is fixedly connected to the outer surface of the fixing plate, a fixing block is fixedly connected to the outer surface of the fixing cylinder, a connecting pipe 2 is fixedly connected to the inside of the fixing cylinder, a sealing ring is slidably connected to the outer surface of the sealing ring, a connecting plate 2 is fixedly connected to the outer surface of the connecting plate 2, and a fixing piece is slidably connected to the inside of the connecting plate 2.

[0007] Preferably, a spring is fixedly connected to the interior of the fixing tube, and the other end of the spring is fixedly connected to a positioning rod, and the outer surface of the positioning rod is slidably connected to the interior of the fixing tube.

[0008] Preferably, a positioning groove is provided inside the fixing plate, and the outer surface of the positioning rod is slidably connected to the inside of the positioning groove, and the positioning grooves are provided in multiple groups and are symmetrically arranged.

[0009] Preferably, the outer surface of the fixing member is slidably connected to the interior of the connecting plate 1, and the outer surface of the fixing member is threadedly connected to the interior of the fixing block.

[0010] Preferably, a sealing ring 1 is installed inside the fixing plate, and the outer surface of the sealing ring 1 is slidably connected to the inside of the fixing tube, and a connector 2 is fixedly connected to the inside of the fixing tube.

[0011] Preferably, the outer surface of the connecting pipe 2 is fixedly connected to a limiting ring, the outer surface of the sealing ring is slidably connected to the outer surface of the limiting ring, and the outer surface of the sealing ring is slidably connected to the outer surface of the fixing plate.

[0012] Preferably, a sealing ring 2 is installed on the outside of the sealing ring, and the outer surface of the sealing ring 2 is slidably connected to the outer surface of the fixed plate. A sealing ring 3 is installed on the inside of the sealing ring, and the outer surface of the sealing ring 3 is slidably connected to the outer surface of the limiting ring.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model uses the cooperation between the fixing cylinder, the fixing plate and the sealing ring. The fixing cylinder can connect the pressure gauge body with the external installation part. When replacing, the filter screen can be quickly disassembled through the fixing plate. The connecting plate 1 and the connecting plate 2 can be disassembled through the fixing piece. The fixing plate that fixes the filter screen can be taken out. When replacing or maintaining and cleaning, the staff does not need to disassemble the whole back and forth. The sealing ring can be used to seal the connection of the fixing plate to ensure the stability of the connection when working, realize the function of quickly replacing the filter screen, and facilitate the staff to maintain the pressure gauge body.

[0015] 2. In the utility model, by providing components such as a fixing groove and a positioning rod, when the fixing plate is installed, the positioning rod will enter the inside of the fixing groove under the action of a spring, and the position of the fixing plate can be assisted by the positioning rod to position the fixing plate, which can assist the staff in installing the fixing plate, and is very convenient to use. The end of the positioning rod and the inside of the fixing groove are both provided with chamfers, and the fixing plate can be moved when the fixing plate is disassembled, so that the fixing plate can be quickly disassembled. By providing components such as a sealing ring 1, a sealing ring 2 and a sealing ring 3, the sealing ring 1 can seal the front end connecting part of the filter screen when the fixing plate is installed, and the sealing ring will contact the limiting ring when the connecting plate 2 is fixed. At this time, the connecting position of the sealing ring can be sealed by the sealing ring 2 and the sealing ring 3, thereby improving the sealing effect during overall use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a pressure gauge that is easy to maintain in the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of a fixed cylinder of a pressure gauge that is easy to maintain according to the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a fixing plate component of a pressure gauge that is easy to maintain according to the utility model;

[0019] Figure 4 A is a structural schematic diagram of a partially enlarged view of a pressure gauge that is easy to maintain in the utility model.

[0020] In the figure: 1. Pressure gauge body; 2. Connector 1; 3. Fixed cylinder; 4. Connecting pipe 1; 5. Fixed plate; 6. Filter screen; 7. Connecting plate 1; 8. Fixed block; 9. Connecting pipe 2; 10. Sealing ring; 11. Connecting plate 2; 12. Fixing piece; 13. Spring; 14. Positioning rod; 15. Positioning groove; 16. Sealing ring 1; 17. Connector 2; 18. Limiting ring; 19. Sealing ring 2; 20. Sealing ring 3. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-4 As shown, a pressure gauge that is easy to maintain includes a pressure gauge body 1, a connector 2 is installed inside the pressure gauge body 1, a fixing cylinder 3 is threadedly connected to the outer surface of the connector 2, and a connector 2 17 is fixedly connected inside the fixing cylinder 3. When the pressure gauge body 1 is installed, the fixing cylinder 3 can be connected to the connector 1 2, and the connector 2 17 can be directly connected to the connecting part. The fixing cylinder 3 is installed at a position between the pressure gauge body 1 and the connecting device.

[0023] The interior of the fixed cylinder 3 is fixedly connected with a connecting pipe 4, the interior of the fixed cylinder 3 is slidably connected with a fixed plate 5, the interior of the fixed plate 5 is installed with a filter screen 6, the filter screen 6 can filter the fluid entering the interior of the pressure gauge body 1, can separate impurities and dust, and prevent dust from entering the interior of the pressure gauge body 1, the interior of the fixed plate 5 is installed with a sealing ring 16, the outer surface of the sealing ring 16 is slidably connected with the interior of the fixed cylinder 3, when the fixed plate 5 is installed, the sealing ring 16 can seal the connection part, so as to improve the sealing effect during overall use.

[0024] A spring 13 is fixedly connected to the interior of the fixed cylinder 3, and a positioning rod 14 is fixedly connected to the other end of the spring 13. The outer surface of the positioning rod 14 is slidably connected to the interior of the fixed cylinder 3. The positioning rod 14 slides inside the fixed cylinder 3 under the action of the spring 13, and the end of the positioning rod 14 is provided with a chamfer.

[0025] A positioning groove 15 is provided inside the fixing plate 5, and the outer surface of the positioning rod 14 is slidably connected to the inside of the positioning groove 15. There are multiple groups of positioning grooves 15 and they are arranged symmetrically. When the fixing plate 5 is installed, the fixing plate 5 will squeeze the positioning rod 14 to make the positioning rod 14 enter the inside of the fixing tube 3. Under the action of the spring 13, the positioning rod 14 will enter the inside of the positioning groove 15. At this time, the positioning rod 14 can assist in positioning the fixing plate 5, which is convenient for maintenance personnel to quickly position and install the fixing plate 5.

[0026] The outer surface of the fixing plate 5 is fixedly connected to a connecting plate 7, the outer surface of the connecting plate 7 is slidably connected to the inside of the fixing tube 3, the outer surface of the fixing tube 3 is fixedly connected to a fixing block 8, a threaded hole is opened inside the fixing block 8, and a connecting hole is opened inside the connecting plate 7. When the fixing plate 5 is installed, the threaded hole will be level with the connecting hole.

[0027] The interior of the fixed cylinder 3 is fixedly connected to a connecting tube 29, the outer surface of the connecting tube 29 is slidably connected to a sealing ring 10, the outer surface of the connecting tube 29 is fixedly connected to a limiting ring 18, the outer surface of the sealing ring 10 is slidably connected to the outer surface of the limiting ring 18, the outer surface of the sealing ring 10 is slidably connected to the outer surface of the fixing plate 5, when the sealing ring 10 is moved, the sealing ring 10 will contact the limiting ring 18, and the pressure applied to the sealing ring 10 can increase the stability of the connection between the sealing ring 10 and the limiting ring 18.

[0028] A sealing ring 2 19 is installed on the outside of the sealing ring 10, and the outer surface of the sealing ring 2 19 is slidably connected to the outer surface of the fixed plate 5. The sealing ring 2 19 is installed on the outside of the sealing ring 10. When pressure is applied to the sealing ring 10, the sealing ring 2 19 can seal the contact position between the sealing ring 10 and the fixed plate 5. A sealing ring 3 20 is installed on the inside of the sealing ring 10. The outer surface of the sealing ring 3 20 is slidably connected to the outer surface of the limiting ring 18. When pressure is applied to the sealing ring 10, the sealing ring 3 20 will contact the outer surface of the limiting ring 18, and the contact position between the sealing ring 10 and the limiting ring 18 can be sealed.

[0029] The outer surface of the sealing ring 10 is fixedly connected with a connecting plate 2 11, and the interior of the connecting plate 2 11 is slidably connected with a fixing part 12. The outer surface of the fixing part 12 is slidably connected to the interior of the connecting plate 1 7, and the outer surface of the fixing part 12 is connected to the internal thread of the fixing block 8. When installing the fixing plate 5, the connecting plate 1 7, the connecting plate 2 11 and the fixing plate 5 can be connected and fixed by the fixing part 12. When in use, the fixing part 12 can apply pressure to the connecting plate 1 7 and the connecting plate 2 11, and can further apply pressure to the sealing ring 1 16, the sealing ring 2 19 and the sealing ring 3 20 to ensure the stability of the whole during use. When disassembling, the fixing plate 5 can be disassembled after the fixing part 12 is removed, and the pressure gauge body 1 does not need to be disassembled.

[0030] It should be noted that in actual use of the device, when the filter screen 6 is removed, the fixing piece 12 is rotated to disengage the fixing piece 12 from the connecting plate 2 11 and the connecting plate 1 7. At this time, the fixing plate 5 can be pulled or pushed to remove the fixing plate 5, and the fixing plate 5 can be removed from the inside of the fixing cylinder 3, and the filter screen 6 can be replaced without removing the pressure gauge body 1. When installing, the fixing plate 5 can be placed into the inside of the fixing cylinder 3, and the positioning rod 14 will enter the inside of the positioning groove 15 under the action of the spring 13. The positioning rod 14 can assist in positioning the fixing plate 5, and the connecting plate 1 7, the connecting plate 2 11 and the fixing block 8 are connected through the fixing piece 12. At this time, the sealing ring 16 and the sealing ring 2 19 can seal the external connection of the fixing plate 5, and the sealing ring 3 20 can seal the connection between the sealing ring 10 and the limit ring 18.

[0031] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. 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, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A pressure gauge that is easy to maintain, comprising a pressure gauge body (1), characterized in that: A connector 1 (2) is installed inside the pressure gauge body (1), a fixing cylinder (3) is threadedly connected to the outer surface of the connector 1 (2), a connecting pipe 1 (4) is fixedly connected to the inside of the fixing cylinder (3), a fixing plate (5) is slidably connected to the inside of the fixing cylinder (3), a filter screen (6) is installed inside the fixing plate (5), a connecting plate 1 (7) is fixedly connected to the outer surface of the fixing plate (5), a fixing block (8) is fixedly connected to the outer surface of the fixing cylinder (3), a connecting pipe 2 (9) is fixedly connected to the inside of the fixing cylinder (3), a sealing ring (10) is slidably connected to the outer surface of the sealing ring (10), a connecting plate 2 (11) is fixedly connected to the outer surface of the sealing ring (10), and a fixing piece (12) is slidably connected to the inside of the connecting plate 2 (11).

2. A pressure gauge that is easy to maintain according to claim 1, characterized in that: A spring (13) is fixedly connected to the interior of the fixed cylinder (3), and a positioning rod (14) is fixedly connected to the other end of the spring (13), and an outer surface of the positioning rod (14) is slidably connected to the interior of the fixed cylinder (3).

3. A pressure gauge that is easy to maintain according to claim 2, characterized in that: A positioning groove (15) is provided inside the fixing plate (5), and the outer surface of the positioning rod (14) is slidably connected to the inside of the positioning groove (15). The positioning grooves (15) are provided in a plurality of groups and are symmetrically arranged.

4. A pressure gauge that is easy to maintain according to claim 1, characterized in that: The outer surface of the fixing member (12) is slidably connected to the interior of the connecting plate (7), and the outer surface of the fixing member (12) is threadedly connected to the interior of the fixing block (8).

5. The pressure gauge easy to maintain according to claim 1, characterized in that: A sealing ring 1 (16) is installed inside the fixing plate (5), and the outer surface of the sealing ring 1 (16) is slidably connected to the inside of the fixing cylinder (3), and a connecting head 2 (17) is fixedly connected to the inside of the fixing cylinder (3).

6. The pressure gauge easy to maintain according to claim 1, characterized in that: The outer surface of the second connecting pipe (9) is fixedly connected to a limiting ring (18), the outer surface of the sealing ring (10) is slidably connected to the outer surface of the limiting ring (18), and the outer surface of the sealing ring (10) is slidably connected to the outer surface of the fixing plate (5).

7. The pressure gauge easy to maintain according to claim 1, characterized in that: A second sealing ring (19) is installed on the outside of the sealing ring (10), and the outer surface of the second sealing ring (19) is slidably connected to the outer surface of the fixing plate (5). A third sealing ring (20) is installed on the inside of the sealing ring (10), and the outer surface of the third sealing ring (20) is slidably connected to the outer surface of the limiting ring (18).

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