Pressure difference transmitter

Abstract

The utility model discloses a pressure difference transmitter which comprises a pressure difference transmitter body, the outer walls of the two sides of the pressure difference transmitter body are fixedly connected with a first installation shell and a second installation shell respectively, the inner side wall of the first installation shell is symmetrically provided with four insertion cavities, and the inner side walls of the four insertion cavities are fixedly connected with flexible sheets. According to the utility model, through the arrangement of the first mounting shell and the second mounting shell, the first mounting shell and the second mounting shell are connected and fixed in a manner that the insertion block is inserted into the insertion cavity in the use process, and the outer side wall of the first abutting block abuts against the outer side wall of the second abutting block for limiting and fixing; compared with a traditional shell, the pressure difference transmitter provided by the utility model is more convenient and does not lose protection on the pressure difference transmitter body by combining a sealing sheath wrapping the outer walls of the bottom ends of the first mounting shell and the second mounting shell and a stable clamping block abutting against the outer side wall of the pressure difference transmitter body.

Description

Technical Field

[0001] The utility model relates to the technical field of differential pressure transmitters, in particular to a differential pressure transmitter. Background Art

[0002] The differential pressure transmitter is a transmitter that measures the pressure difference between the two ends of the transmitter and outputs a standard signal (such as 4-20mA, 0-5V). The difference between the differential pressure transmitter and the general pressure transmitter is that they both have two pressure interfaces. The differential pressure transmitter is generally divided into a positive pressure end and a negative pressure end. Under normal circumstances, the pressure at the positive pressure end of the differential pressure transmitter should be greater than the pressure at the negative pressure section in order to measure.

[0003] In the prior art, the housing of the differential pressure transmitter is often integrated or fixedly installed by means of screws during use. Therefore, when the differential pressure transmitter needs maintenance, it is difficult to operate it conveniently, resulting in poor practicality.

[0004] After searching, it is found that a high-precision differential pressure transmitter (publication number: CN213874770U) is disclosed in a Chinese patent document. The utility model discloses a high-precision differential pressure transmitter, including a detection instrument, wherein the outer side of the detection instrument is symmetrically threaded with two connecting plates, one side of the two connecting plates is welded with a connecting arm, one end of the connecting arm is welded with a cylinder, the piston rod of the cylinder is rotatably connected with a connecting rod, and the end of the connecting rod away from the cylinder is rotatably connected with a movable plate, the top of the movable plate is welded with a spring, and one end of the top of the spring is welded with a fixed block. The utility model arranges a fixed block on one side of the connecting arm and a spring on one side of the fixed block, so that the movable plate can press down the rod body under the action of the spring, so that the rod body drives the clamping block to move to the connecting plate through the push plate; through the above arrangement, the differential pressure transmitter has an automatic clamping installation structure, so that the differential pressure transmitter can be placed in a stable position to detect the pressure difference of different instruments and equipment, but there are still the following defects:

[0005] Although the above-mentioned differential pressure transmitter has an automatic clamping and installation structure, so that the differential pressure transmitter can be placed in a stable position to detect the pressure difference of different instruments and equipment, there is still a problem that the housing of the differential pressure transmitter is often integrated or fixed by screws during use. In this way, when the differential pressure transmitter needs maintenance, it is difficult to operate it conveniently, resulting in poor practicality. Utility Model Content

[0006] The purpose of the utility model is to provide a differential pressure transmitter to solve the problem that in the prior art proposed in the above background technology, the shell of the differential pressure transmitter is often integrated or fixedly installed by means of screws during use. In this way, when the differential pressure transmitter needs maintenance, it is difficult to operate it conveniently, resulting in poor practicality.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a differential pressure transmitter, including a differential pressure transmitter body, the outer walls on both sides of the differential pressure transmitter body are respectively fixedly connected with a first mounting shell and a second mounting shell, the inner wall of the first mounting shell is symmetrically provided with four plug-in cavities, and the inner walls of the four plug-in cavities are all fixedly connected with a flexible sheet, one end of the flexible sheet is fixedly connected with a plurality of first interference blocks at equal intervals, and the outer side walls of the first interference blocks are in conflict with the outer side walls of the second interference blocks, the second interference blocks are installed at equal intervals at one end of the plug-in blocks, and the plug-in blocks are all plugged into the corresponding plug-in cavities, and the plug-in blocks are symmetrically fixedly connected to the inner wall of the second mounting shell and extend to the outside of the second mounting shell.

[0008] Preferably, the first mounting shell and the second mounting shell are both provided with a stabilizing clamping block in contact with the outer side wall of the differential pressure transmitter body, and the inner side wall of the stabilizing clamping block is bonded with an insulating pad.

[0009] Preferably, four return springs are symmetrically installed on the rear surface of the stabilizing clamp, and the other ends of the four return springs are connected to the outer side wall of the connecting plate, and the connecting plate is fixedly installed inside the first mounting shell and the second mounting shell respectively.

[0010] Preferably, the outer side walls of the connecting plates are fixedly connected with connecting sleeves, and the other end of the connecting sleeves is movably connected with connecting sleeve rods inside, and the other end of the connecting sleeve rods is fixedly connected to the rear surface of the stabilizing clamp block.

[0011] Preferably, connection ports are provided at both ends of the differential pressure transmitter body, and the connection ports at both ends respectively penetrate the interior of the first mounting shell and the second mounting shell, and extend to the outside of the first mounting shell and the second mounting shell respectively, and the outer wall and inner wall of the connection port are both threaded structures.

[0012] Preferably, the outer side wall of the connection port is threadedly connected with a threaded connection block, and one end of the threaded connection block is fixedly connected with a connecting tube, the inner side wall of the connecting tube is fixedly connected with a flexible airbag, and a silicone sealing pad is bonded to the outer side wall of the flexible airbag close to the threaded connection block.

[0013] Preferably, a plurality of damping blocks are fixedly connected inside the flexible airbag at equal intervals, and one end of each damping block is fixedly connected to a silicone protrusion, and the outer side wall of the silicone protrusion is in conflict with the inner side wall of the flexible airbag close to the threaded connection block.

[0014] Preferably, the bottom outer walls of the first installation shell and the second installation shell are wrapped with a sealing sleeve, and the bottom end of the sealing sleeve is fixedly connected to a base plate, and the outer side wall of the base plate is symmetrically fixedly connected to four fixing ears.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. By setting up a first mounting shell and a second mounting shell, the first mounting shell and the second mounting shell are connected and fixed by plugging the plug-in block into the inside of the plug-in cavity during use, and the outer wall of the first contact block is contacted with the outer wall of the second contact block for limit fixation, and combined with the sealing sleeve wrapped around the outer wall of the bottom end of the first mounting shell and the second mounting shell, and the firm clamping block contacting the outer wall of the differential pressure transmitter body, this is more convenient than the traditional shell, and the protection of the differential pressure transmitter body is not lost. In this way, when the differential pressure transmitter body needs to maintain or repair its internal components, the first mounting shell and the second mounting shell can be quickly disassembled to perform corresponding operations on the differential pressure transmitter body.

[0017] 2. By setting the threaded connection block, after the connection port is connected to the connection pipeline, the connection pipe cover is set at the connection between the connection port and the connection pipeline by rotating the threaded connection block, and then the connection is sealed by the cooperation of the flexible air bag and the silicone sealing gasket, and the damping block is set to cooperate with the silicone protrusion, so that the flexible air bag cooperates with the silicone sealing gasket and the connection to have a better sealing effect, so that the high sealing of the connection makes the effect produced during the use of the differential pressure transmitter body more accurate, thereby improving the practicability and accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the combined parts of the first mounting shell and the second mounting shell in the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the combined parts of the stabilizing clamp block, the insulating pad, the reset spring, the connecting plate, the connecting sleeve and the connecting sleeve rod in the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the combined parts of the threaded connection block, the connecting pipe, the flexible airbag and the silicone sealing pad in the utility model;

[0022] Figure 5 It is a schematic diagram of the internal parts structure of the flexible airbag in the utility model.

[0023] In the figure: 1. differential pressure transmitter body; 2. first mounting shell; 3. second mounting shell; 4. plug-in cavity; 5. flexible sheet; 6. first resistance block; 7. plug-in block; 8. second resistance block; 9. stabilizing clamp; 10. insulating pad; 11. reset spring; 12. connecting plate; 13. connecting sleeve; 14. connecting sleeve rod; 15. connecting port; 16. threaded connection block; 17. connecting pipe; 18. flexible airbag; 19. silicone sealing pad; 20. damping block; 21. silicone protrusion; 22. sealing sleeve; 23. substrate; 24. fixing ear. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] See also Figure 1-5 The utility model provides a differential pressure transmitter, including a differential pressure transmitter body 1, characterized in that: the outer walls on both sides of the differential pressure transmitter body 1 are respectively fixedly connected with a first mounting shell 2 and a second mounting shell 3, and the first mounting shell 2 and the second mounting shell 3 are plugged into each other, the inner side wall of the first mounting shell 2 is symmetrically fixedly connected with four plug-in cavities 4, and the inner side walls of the four plug-in cavities 4 are all fixedly connected with a flexible sheet 5 to which a plurality of first abutment blocks 6 are fixedly connected at equal intervals, and the outer side walls of the first abutment blocks 6 are all in conflict with the outer side walls of the second abutment blocks 8 fixedly connected at one end of the plug-in blocks 7 at equal intervals, and the plug-in blocks 7 are all plugged into the corresponding plug-in cavities. Inside the cavity 4, the plug-in block 7 is symmetrically fixedly connected to the inner wall of the second mounting shell 3 and extends to the outside of the second mounting shell 3. The first mounting shell 2 and the second mounting shell 3 are set, so that during use, the first mounting shell 2 and the second mounting shell 3 are connected and fixed by plugging the plug-in block 7 into the inside of the plug-in cavity 4, and the outer wall of the first contact block 6 is in contact with the outer wall of the second contact block 8 to limit and fix them. In this way, when the differential pressure transmitter body 1 needs to maintain or repair its internal components, the first mounting shell 2 and the second mounting shell 3 can be quickly disassembled, and corresponding operations can be performed on the differential pressure transmitter body 1.

[0026] The first mounting shell 2 and the second mounting shell 3 are both provided with a stabilizing clamp 9 which is adapted to the outer wall of the differential pressure transmitter body 1, and the inner wall of the stabilizing clamp 9 is in conflict with the outer wall of the differential pressure transmitter body 1, and the inner wall of the stabilizing clamp 9 is bonded with an insulating pad 10, and the outer wall size of the insulating pad 10 is adapted to the inner wall size of the stabilizing clamp 9. By setting the insulating pad 10, an insulating pad 10 is provided between the stabilizing clamp 9 and the outer wall of the differential pressure transmitter body 1, thereby playing a role of insulation protection.

[0027] The rear surfaces of the stabilizing clamps 9 are connected to the outer side walls of the connecting plates 12 through four reset springs 11. The connecting plates 12 are fixedly mounted inside the first mounting shell 2 and the second mounting shell 3, respectively. The connecting plates 12 fixedly connected inside the first mounting shell 2 and the second mounting shell 3 are arranged in a parallel structure. The outer side walls of the connecting plates 12 are fixedly connected with connecting sleeves 13, and the other end of the connecting sleeve 13 is internally movably connected with a connecting sleeve rod 14 fixedly connected to the rear surface of the stabilizing clamp 9. The reset springs 11 are arranged so that the stabilizing clamps 9 are driven by the reset springs 11 to contact the outer side walls of the differential pressure transmitter body 1 during use, so that the differential pressure transmitter body 1 can be stabilized and limited during use.

[0028] Both ends of the differential pressure transmitter body 1 are provided with connection ports 15, and the connection ports 15 at both ends respectively penetrate the interior of the first mounting shell 2 and the second mounting shell 3, and extend to the outside of the first mounting shell 2 and the second mounting shell 3 respectively. The outer wall and the inner wall of the connection port 15 are both threaded structures. Through the set connection port 15, the connection port 15 can be threadedly connected to the required pipeline during use, and the threaded teeth set on the outer wall of the connection port 15 make the threaded connection block 16 flexibly adjustable.

[0029] The outer side wall of the connection port 15 is threadedly connected with a threaded connection block 16, the inner side wall of the threaded connection block 16 is a threaded structure, and one end of the threaded connection block 16 is fixedly connected with a connecting pipe 17, the inner side wall size of the connecting pipe 17 is larger than the inner side wall size of the threaded connection block 16, and the inner side wall of the connecting pipe 17 is fixedly connected with a flexible airbag 18, the flexible airbag 18 is a circular ring mechanism, and the outer side wall of the flexible airbag 18 close to the threaded connection block 16 is bonded with a silicone sealing pad 19 that conflicts with the outer side wall of the connection port 15. Through the threaded connection block 16, after the connection port 15 is connected to the connecting pipeline, the threaded connection block 16 is rotated to make the connecting pipe 17 cover the connection port 15 and the connecting pipeline. In this way, the flexible airbag 18 cooperates with the silicone sealing pad 19 to seal the connection, so that the effect produced during the use of the differential pressure transmitter body 1 is more accurate.

[0030] A number of damping blocks 20 are fixedly connected at equal intervals inside the flexible airbag 18, and one end of the damping block 20 is fixedly connected to a silicone protrusion 21. The outer wall of the silicone protrusion 21 is close to the inner wall of the flexible airbag 18 of the threaded connection block 16 and is in conflict with the inner wall of the flexible airbag 18. The silicone protrusion 21 is a hemispherical structure. By cooperating with the damping block 20 and the silicone protrusion 21, the flexible airbag 18 cooperates with the silicone sealing pad 19 and the sealing effect at the connection is better.

[0031] The bottom outer walls of the first mounting shell 2 and the second mounting shell 3 are wrapped with a sealing sleeve 22, the inner wall of the sealing sleeve 22 is in contact with the outer wall of the first mounting shell 2 and the second mounting shell 3, the sealing sleeve 22 is a moisture-resistant structure, and the bottom end of the sealing sleeve 22 is fixedly connected to a base plate 23, and the outer wall of the base plate 23 is symmetrically fixedly connected to four fixing ears 24, through the setting of the sealing sleeve 22, so that during use, the bottom outer walls of the first mounting shell 2 and the second mounting shell 3 are wrapped by the sealing sleeve 22, thereby protecting the differential pressure transmitter body 1, and during the installation and positioning of the device, the entire device is fixed by screws in combination with the fixing ears 24.

[0032] When the embodiment of the present application is in use: first, through the provided sealing sleeve 22, during use, the sealing sleeve 22 wraps the outer wall of the bottom end of the first mounting shell 2 and the second mounting shell 3, thereby protecting the differential pressure transmitter body 1, and during the installation and positioning of the device, the device as a whole is fixed by screws in conjunction with the fixing ears 24, and secondly, through the provided connection port 15, during use, the connection port 15 can be threadedly connected to the desired pipeline, and through the provided threaded connection block 16, after the connection port 15 is connected to the connecting pipeline, the threaded connection block 16 is rotated to make the connecting pipe 17 cover the connection between the connection port 15 and the connecting pipeline, and then the flexible airbag 18 cooperates with the silicone sealing pad 19 to seal the connection, and at the same time, the damping block 20 is provided in conjunction with the silicone protrusion 21, so that the flexible airbag 18 is equipped with The silicone sealing pad 19 has a better sealing effect on the connection. Then, a reset spring 11 is set up, so that during use, the reset spring 11 drives the stabilizing clamp 9 to contact the outer wall of the differential pressure transmitter body 1, so that during use, the differential pressure transmitter body 1 can be stabilized and limited. Finally, the first mounting shell 2 and the second mounting shell 3 are set up. During use, the first mounting shell 2 and the second mounting shell 3 are connected and fixed by plugging the plug-in block 7 into the inside of the plug-in cavity 4, and the outer wall of the first contact block 6 is contacted with the outer wall of the second contact block 8 for limited fixing. In this way, when the differential pressure transmitter body 1 needs to maintain or repair its internal components, the first mounting shell 2 and the second mounting shell 3 can be quickly disassembled, and corresponding operations can be performed on the differential pressure transmitter body 1. In this way, a differential pressure transmitter is ready for use.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A differential pressure transmitter, comprising a differential pressure transmitter body (1), characterized in that: The outer walls on both sides of the differential pressure transmitter body (1) are respectively fixedly connected to a first mounting shell (2) and a second mounting shell (3); the inner wall of the first mounting shell (2) is symmetrically provided with four plug-in cavities (4), and the inner walls of the four plug-in cavities (4) are all fixedly connected with a flexible sheet (5); one end of the flexible sheet (5) is evenly and fixedly connected with a plurality of first abutment blocks (6), and the outer walls of the first abutment blocks (6) are in abutment with the outer walls of the second abutment blocks (8); the second abutment blocks (8) are evenly installed at one end of the plug-in blocks (7), and the plug-in blocks (7) are all plugged into the corresponding plug-in cavities (4); the plug-in blocks (7) are symmetrically and fixedly connected to the inner wall of the second mounting shell (3) and extend to the outside of the second mounting shell (3).

2. A differential pressure transmitter according to claim 1, characterized in that: The first mounting shell (2) and the second mounting shell (3) are both provided with a stabilizing clamp (9) which contacts the outer wall of the differential pressure transmitter body (1), and the inner wall of the stabilizing clamp (9) is bonded with an insulating pad (10).

3. A differential pressure transmitter according to claim 2, characterized in that: Four return springs (11) are symmetrically mounted on the rear surface of the stabilizing clamp (9), and the other ends of the four return springs (11) are connected to the outer side wall of a connecting plate (12), and the connecting plate (12) is fixedly mounted inside the first mounting shell (2) and the second mounting shell (3), respectively.

4. A differential pressure transmitter according to claim 3, characterized in that: The outer side walls of the connecting plates (12) are fixedly connected to connecting sleeves (13), and the other end of the connecting sleeves (13) is movably connected to connecting sleeve rods (14) inside, and the other end of the connecting sleeve rods (14) is fixedly connected to the rear surface of the stabilizing clamping block (9).

5. A differential pressure transmitter according to claim 1, characterized in that: Both ends of the differential pressure transmitter body (1) are provided with connection ports (15), and the connection ports (15) at both ends respectively penetrate the interior of the first mounting shell (2) and the second mounting shell (3), and respectively extend to the outside of the first mounting shell (2) and the second mounting shell (3), and the outer side wall and the inner side wall of the connection port (15) are both arranged in a threaded structure.

6. A differential pressure transmitter according to claim 5, characterized in that: The outer side wall of the connection port (15) is threadedly connected to a threaded connection block (16), and one end of the threaded connection block (16) is fixedly connected to a connection pipe (17), the inner side wall of the connection pipe (17) is fixedly connected to a flexible airbag (18), and the outer side wall of the flexible airbag (18) close to the threaded connection block (16) is bonded with a silicone sealing pad (19).

7. A differential pressure transmitter according to claim 6, characterized in that: A plurality of damping blocks (20) are fixedly connected at equal intervals inside the flexible airbag (18), and one end of each damping block (20) is fixedly connected to a silicone protrusion (21), and the outer wall of the silicone protrusion (21) is in contact with the inner wall of the flexible airbag (18) close to the threaded connection block (16).

8. A differential pressure transmitter according to claim 1, characterized in that: The bottom outer walls of the first mounting shell (2) and the second mounting shell (3) are wrapped with a sealing sleeve (22), the bottom end of the sealing sleeve (22) is fixedly connected to a base plate (23), and the outer side wall of the base plate (23) is symmetrically fixedly connected to four fixing ears (24).

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