A micro differential pressure sensor that is easy to install and maintain

Abstract

The present invention belongs to the technical field of pressure sensors, and specifically is a micro differential pressure sensor that is easy to install and maintain. Provided is a micro differential pressure sensor with a reinforced structure that is easy to install and maintain. The micro differential pressure sensor includes a micro differential pressure sensor, a locking sleeve, and a tensioning claw, etc. A through hole for installation and fixation is provided in the middle of the micro differential pressure sensor, and the locking sleeve is movably sleeved in the through hole. Tensioning claws are provided at one end of the locking sleeve at intervals along the circumferential direction, and the tensioning claws can extend outward to the mounting hole of the fixed bracket. The present invention uses the combined action of the locking sleeve, the tensioning claw, the convex ring, the strut and the adjustment arm, as well as the reinforced locking structure composed of the external threaded sleeve, the sleeve and the threaded port, so that the user can conveniently complete the installation and fixation of the micro differential pressure sensor with simple operations, without the need to use bolts and nuts to install the micro differential pressure sensor, thereby helping to reduce the installation time of the micro differential pressure sensor.

Description

Technical Field

[0001] The invention belongs to the technical field of pressure sensors, and in particular is a micro differential pressure sensor which is easy to install and maintain. Background Art

[0002] Micro differential pressure sensors are widely used in industrial automation, environmental monitoring, medical equipment and other fields to measure tiny pressure differences of gas or liquid.

[0003] However, the micro differential pressure sensors currently on the market are generally installed and fixed by means of nuts and bolts. Therefore, when measuring the pressure of gases or liquids in different usage environments, it is necessary to consider the usage environment and the actual installation position of the micro differential pressure sensor. Therefore, the installation and fixing method that only relies on nuts and bolts has the problem of inconvenient disassembly and installation and maintenance. In addition, nuts and bolts are exposed to the air for a long time, and are often easily contaminated by corrosive substances and accelerate rust, which is not conducive to the subsequent maintenance of the micro differential pressure sensor.

[0004] Based on this, a micro differential pressure sensor with a reinforced structure and easy installation and maintenance is proposed to solve the above technical problems. Summary of the invention

[0005] In order to overcome the disadvantages of the existing installation and fixing methods in the actual use process, the technical problem to be solved by the present invention is to provide a micro differential pressure sensor with a reinforced structure and easy to install and maintain.

[0006] The technical solution is: a micro differential pressure sensor that is easy to install and maintain, including a micro differential pressure sensor, a through hole for installation and fixing is provided in the middle of the micro differential pressure sensor, and also includes a locking structure and a protective structure. A locking structure for quickly installing the micro differential pressure sensor is provided in the through hole, and the locking structure includes a locking sleeve, a tensioning claw piece, a convex ring, a support rod and an adjusting arm. The locking sleeve is movably sleeved in the through hole, and tensioning claw pieces are provided at one end of the locking sleeve at intervals along the circumferential direction, and the tensioning claw piece can be moved to The support rod is movably inserted into the locking sleeve, and the inner diameter of the tensioning claw is smaller than the outer diameter of the support rod. The end of the support rod can abut against the inner side of the tensioning claw so that the tensioning claw can be stretched outward and tightened in the mounting hole of the fixed bracket. The end of the support rod is connected to an adjusting arm, and a protective structure for shielding and maintenance is provided on the side of the micro-pressure differential sensor close to the adjusting arm.

[0007] As a further improvement of the above technical solution, the locking structure also includes an externally threaded sleeve and a sleeve. The externally threaded sleeve is sleeved on one end of the support rod close to the adjusting arm, and a threaded port that is screwed together with the externally threaded sleeve is provided at the port at the inner end of the through hole. The through hole is sleeved with a sleeve, and the locking sleeve is sleeved in the sleeve, and the convex ring abuts against the port of the sleeve.

[0008] As a further improvement of the above technical solution, the protective structure includes a protective cover, a positioning sleeve, a magnetic block 1, a magnetic block 2 and a sealing gasket. A positioning groove is provided on the side of the micro-pressure differential sensor close to the protective cover, and a magnetic block 2 is embedded in the positioning groove. A positioning sleeve corresponding to the positioning groove is provided on the inner side of the protective cover, a magnetic block 1 is provided in the positioning sleeve, and the magnetic block 1 is attracted to the magnetic block 2. A sealing gasket abutting the protective cover is provided on the micro-pressure differential sensor.

[0009] As a further improvement of the above technical solution, a groove is provided on the inner side surface of the micro-differential pressure sensor, and the adjustment arm is located in the groove.

[0010] As a further improvement of the above technical solution, it also includes a direction mark, and the direction mark is embedded in the groove.

[0011] As a further improvement of the above technical solution, it also includes a clamping structure, which includes a locking block, a guide column, an elastic member, a hook and a socket. The edge of the protective cover is symmetrically provided with a guide column that can be slidably adjusted. The outer end of the guide column is connected to a locking block. An elastic member is connected between the locking block and the protective cover, and the elastic member is sleeved on the guide column. A hook is provided on the inner side of the locking block. A socket is provided at the edge of the micro-pressure differential sensor, and the hook can be clamped on the socket.

[0012] As a further improvement of the above technical solution, it also includes anti-slip strips, and the anti-slip strips are arranged at intervals on the outer side of the locking block.

[0013] As a further improvement of the above technical solution, a cap is also included. The outer bottom of the micro-differential pressure sensor is clamped with a cap for covering screws, and the screws are used to fix the internal structure of the micro-differential pressure sensor.

[0014] Beneficial effects of the present invention: 1. The present invention uses the combined action of the locking sleeve, the tensioning claw, the convex ring, the support rod and the adjusting arm, and the reinforced locking structure composed of the external threaded sleeve, the sleeve and the threaded opening, so that the user can conveniently complete the installation and fixation of the micro-pressure differential sensor with simple operations, without the need to use bolts and nuts to install the micro-pressure differential sensor, which is beneficial to reducing the installation time of the micro-pressure differential sensor; and the protective structure composed of the protective cover, the positioning sleeve, the magnetic block 1, the magnetic block 2 and the sealing gasket can effectively prevent the influence of dust, moisture and other external environments on the sensor, which is beneficial to convenient maintenance of the micro-pressure differential sensor at any time.

[0015] 2. The clamping structure of the present invention, which is composed of a locking block, a guide column, an elastic member, a hook and a clamping seat, can further enhance the stability of the installation of the protective cover, so that the micro differential pressure sensor can be stably used in various complex environments and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the assembly structure of the fixing bracket and the micro differential pressure sensor of the present invention.

[0017] Figure 2 This is a structural separation diagram of the fixed bracket and the micro-pressure difference sensor of the present invention.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the locking structure of the present invention.

[0019] Figure 4 This is a structural separation diagram of the locking structure, the protective structure and the micro-pressure difference sensor of the present invention.

[0020] Figure 5 It is a front view of the micro differential pressure sensor of the present invention.

[0021] Figure 6 This is a structural separation diagram of the locking structure of the present invention.

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the protective structure of the present invention.

[0023] Figure 8 It is a cross-sectional view of the present invention.

[0024] Fig. 9 It is a partial structural separation diagram of the present invention.

[0025] Fig.10 It is a three-dimensional structural schematic diagram of the clamping structure of the present invention.

[0026] Figure numbers: 1_micro differential pressure sensor, 2_locking sleeve, 20_tensioning claw, 21_convex ring, 3_support rod, 30_adjusting arm, 31_external threaded sleeve, 32_threaded mouth, 33_sleeve, 4_protective cover, 40_positioning sleeve, 41_magnetic block one, 42_magnetic block two, 5_locking block, 50_guide column, 51_elastic part, 52_hook, 53_seat, 54_anti-slip strip, 6_sealing gasket, 7_direction mark, 8_cap, 10_groove, 11_through hole, 12_positioning slot, a_fixing bracket, b_screw. DETAILED DESCRIPTION

[0027] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all the contents.

[0028] Embodiment 1: The present invention provides a micro differential pressure sensor that is easy to install and maintain, see Figures 1 to 9 As shown, it includes a micro-pressure differential sensor 1, a locking structure and a protective structure. Two through holes 11 are provided in the middle of the micro-pressure differential sensor 1. The two through holes 11 are used to quickly install and fix the micro-pressure differential sensor 1. The two through holes 11 are provided with locking structures for quickly installing the micro-pressure differential sensor 1. The locking structure includes a locking sleeve 2, a tensioning claw piece 20, a convex ring 21, a support rod 3 and an adjusting arm 30. The locking sleeve 2 is movably sleeved in the through hole 11. Tensioning claw pieces 20 are provided at one end of the locking sleeve 2 at intervals along the circumferential direction, and the tensioning claw piece 20 can extend outward to the mounting hole of the fixed bracket a. The locking sleeve 2 and the tensioning claw piece 20 are both plastic parts, have a certain elasticity, are cheap and convenient to manufacture. For subsequent convenient replacement and maintenance; a convex ring 21 is provided at the other end of the locking sleeve 2, and the support rod 3 is movably inserted in the locking sleeve 2, and the inner diameter of the tensioning claw 20 is smaller than the outer diameter of the support rod 3. When the end of the support rod 3 abuts against the inner side of the tensioning claw 20, the tensioning claw 20 can be stretched outward and tightened in the mounting hole of the fixed bracket a, thereby achieving the purpose of convenient installation and fixation of the micro-pressure differential sensor 1. An adjusting arm 30 is connected to the end of the support rod 3, and a protective structure is provided on the side of the micro-pressure differential sensor 1 close to the adjusting arm 30. The protective structure can shield and maintain the micro-pressure differential sensor 1, so that the micro-pressure differential sensor 1 can be widely used in various complex environments.

[0029] For further information, see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7, Figure 8 and Fig. 9 As shown, the protective structure includes a protective cover 4, a positioning sleeve 40, a magnetic block 1 41, a magnetic block 2 42 and a sealing gasket 6. A positioning groove 12 is provided on the side of the micro-differential pressure sensor 1 close to the protective cover 4, and a magnetic block 2 42 is embedded in the positioning groove 12. A positioning sleeve 40 corresponding to the positioning groove 12 is provided on the inner side of the protective cover 4. A magnetic block 1 41 is provided in the positioning sleeve 40, and the magnetic block 1 41 is attracted to the magnetic block 2 42. Both the magnetic block 1 41 and the magnetic block 2 42 are magnet blocks, which can quickly install and fix the protective cover 4. A sealing gasket 6 is provided on the micro-differential pressure sensor 1, which is in contact with the protective cover 4. The sealing gasket 6 can enhance the sealing between the protective cover 4 and the micro-differential pressure sensor 1, thereby achieving the purpose of dustproof and waterproof.

[0030] For further information, see Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 and Fig. 9 As shown, the locking structure also includes an external threaded sleeve 31 and a sleeve 33. The end of the support rod 3 close to the adjusting arm 30 is sleeved with the external threaded sleeve 31. The port at the inner end of the through hole 11 is provided with a threaded port 32 which is screwed together with the external threaded sleeve 31. The through hole 11 is sleeved with a sleeve 33, and the locking sleeve 2 is sleeved in the sleeve 33. When the convex ring 21 abuts against the end of the sleeve 33, it can limit the locking sleeve 2. The inner side of the micro-pressure differential sensor 1 is provided with a groove 10, and the adjusting arm 30 is located in the groove 10. By rotating the adjusting arm 30, the tensioning force of the locking sleeve 2 and the tensioning claw 20 can be flexibly adjusted. It also includes There is a direction mark 7, and the direction mark 7 is embedded in the groove 10, which is beneficial to provide a direction reference when installing the micro-differential pressure sensor 1, which is more convenient; it also includes anti-slip strips 54, and anti-slip strips 54 are arranged at intervals on the outside of the locking block 5, which is beneficial to enhance the friction coefficient and avoid slipping during use, which is convenient to use; it also includes a cap 8, and the outer bottom of the micro-differential pressure sensor 1 is clamped with a cap 8 for covering the screw b, and the screw b is used to fix the internal structure of the micro-differential pressure sensor 1. The cap 8 is beneficial to protect the screw b and prevent the screw b from being corroded and affecting the quality of the micro-differential pressure sensor 1 product.

[0031] When the micro-pressure differential sensor 1 is installed to measure the micro-pressure of the flowing liquid, it is only necessary to align the through hole 11 on it with the mounting hole on the fixing bracket a, and then insert the locking sleeve 2 into the through hole 11 and pass out of the mounting hole on the fixing bracket a, and then insert the support rod 3 into the locking sleeve 2 from the inside to the outside, so that the tensioning claw piece 20 at the end of the locking sleeve 2 can be opened and connected to the mounting hole of the fixing bracket a under the abutment of the support rod 3, thereby achieving the purpose of convenient installation and fixation of the micro-pressure differential sensor 1; and by rotating the adjusting arm 30 along the indicated direction of the direction mark 7, so that the external threaded sleeve 31 can cooperate with the threaded opening 32, thereby achieving the purpose of further clamping and limiting the locking sleeve 2 and the tensioning claw piece 20; in addition, it is only necessary to buckle the protective cover 4 on the micro-pressure differential sensor 1 so that the positioning sleeve 40 corresponds to the positioning groove 12, and the protective cover 4 can be quickly installed and fixed through the mutual attraction of the magnetic block 1 41 and the magnetic block 2 42.

[0032] Embodiment 2: Based on Embodiment 1, see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, it also includes a clamping structure, which includes a locking block 5, a guide column 50, an elastic member 51, a hook 52 and a socket 53. The edge of the protective cover 4 is symmetrically provided with a guide column 50 that can be slidably adjusted. The outer end of the guide column 50 is connected to the locking block 5, and an elastic member 51 is connected between the locking block 5 and the protective cover 4. The elastic member 51 is sleeved on the guide column 50. The inner side of the locking block 5 is provided with a hook 52. The edge of the micro-differential pressure sensor 1 is provided with a socket 53, and the hook 52 can be clamped on the socket 53. The elastic member 51 is a compression spring, which is used to provide tensioning force for the locking block 5 so that the hook 52 on the locking block 5 can be firmly clamped with the socket 53; through the mutual clamping and locking effect of the hook 52 and the socket 53 on the clamping structure, the stability of the installation of the protective cover 4 and the micro-differential pressure sensor 1 can be further improved, which is conducive to the purpose of convenient maintenance of the locking structure and the micro-differential pressure sensor 1.

[0033] When it is necessary to disassemble the micro-pressure differential sensor 1, it is only necessary to press the locking block 5 toward the middle so that the upper hook 52 can be disengaged from the base 53, and the protective cover 4 can be easily taken out. Then, the adjusting arm 30 is rotated in the opposite direction and the support rod 3 is taken out, so that the support rod 3 can release the clamping restriction on the locking sleeve 2 and the tensioning claw 20, and the micro-pressure differential sensor 1 can be easily disassembled from the fixed bracket a. The operation is simple and easy to use, which is conducive to the maintenance of the micro-pressure differential sensor 1 at any time.

[0034] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A micro differential pressure sensor that is easy to install and maintain, comprising a micro differential pressure sensor (1), wherein a through hole (11) for installation and fixing is provided in the middle of the micro differential pressure sensor (1), characterized in that: The invention also comprises a locking structure and a protective structure. The through hole (11) is provided with a locking structure for quickly installing the micro differential pressure sensor (1). The locking structure comprises a locking sleeve (2), a tensioning claw piece (20), a convex ring (21), a support rod (3) and an adjusting arm (30). The locking sleeve (2) is movably sleeved in the through hole (11). Tensioning claw pieces (20) are arranged at intervals along the circumferential direction at one end of the locking sleeve (2). The tensioning claw pieces (20) can extend outwards into the mounting hole of the fixing bracket (a). The other end of the locking sleeve (2) is provided with a The support rod (3) is movably inserted into the locking sleeve (2), and the inner diameter of the tensioning claw piece (20) is smaller than the outer diameter of the support rod (3). The end of the support rod (3) can abut against the inner side of the tensioning claw piece (20), so that the tensioning claw piece (20) can be stretched outward and tensioned in the mounting hole of the fixing bracket (a). The end of the support rod (3) is connected to an adjustment arm (30), and a protective structure for shielding and maintenance is provided on a side of the micro-pressure differential sensor (1) close to the adjustment arm (30).

2. A micro differential pressure sensor that is easy to install and maintain according to claim 1, characterized in that: The locking structure further comprises an externally threaded sleeve (31) and a sleeve (33); an end of the support rod (3) close to the adjusting arm (30) is sleeved with the externally threaded sleeve (31); a threaded opening (32) screwedly connected to the externally threaded sleeve (31) is provided at the port of the inner end of the through hole (11); the through hole (11) is sleeved with the sleeve (33); the locking sleeve (2) is sleeved in the sleeve (33); and the convex ring (21) abuts against the port of the sleeve (33).

3. A micro differential pressure sensor that is easy to install and maintain according to claim 1, characterized in that: The protective structure comprises a protective cover (4), a positioning sleeve (40), a magnetic block 1 (41), a magnetic block 2 (42) and a sealing gasket (6); a positioning groove (12) is provided on a side of the micro differential pressure sensor (1) close to the protective cover (4); the magnetic block 2 (42) is embedded in the positioning groove (12); a positioning sleeve (40) corresponding to the positioning groove (12) is provided on the inner side of the protective cover (4); the magnetic block 1 (41) is provided in the positioning sleeve (40); the magnetic block 1 (41) is attracted to the magnetic block 2 (42); and the micro differential pressure sensor (1) is provided with a sealing gasket (6) abutting against the protective cover (4).

4. A micro differential pressure sensor that is easy to install and maintain according to claim 1, characterized in that: The inner side surface of the micro differential pressure sensor (1) is provided with a groove (10), and the adjustment arm (30) is located in the groove (10).

5. A micro differential pressure sensor that is easy to install and maintain according to claim 4, characterized in that: It also includes a direction mark (7), and the direction mark (7) is embedded in the groove (10).

6. A micro differential pressure sensor that is easy to install and maintain according to claim 3, characterized in that: The invention also comprises a clamping structure, wherein the clamping structure comprises a locking block (5), a guide column (50), an elastic member (51), a hook (52) and a clamping seat (53); a guide column (50) capable of sliding adjustment is symmetrically arranged at the edge of the protective cover (4); the outer end of the guide column (50) is connected to the locking block (5); an elastic member (51) is connected between the locking block (5) and the protective cover (4); the elastic member (51) is sleeved on the guide column (50); a hook (52) is arranged on the inner side of the locking block (5); a clamping seat (53) is arranged at the edge of the micro-differential pressure sensor (1); and the hook (52) can be clamped on the clamping seat (53).

7. A micro differential pressure sensor that is easy to install and maintain according to claim 6, characterized in that: It also includes anti-slip strips (54), and the anti-slip strips (54) are arranged at intervals on the outside of the locking block (5).

8. The micro differential pressure sensor that is easy to install and maintain according to claim 1, characterized in that: It also includes a cover cap (8), the outer bottom of the micro-differential pressure sensor (1) being clamped with the cover cap (8) for covering the screw (b), the screw (b) being used for fixing the internal structure of the micro-differential pressure sensor (1).

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