High-precision differential pressure transmitter

Abstract

This utility model discloses a high-precision differential pressure transmitter, including a mounting plate. A groove is formed in the center of the mounting plate, and an opening communicating with the groove is formed inside the mounting plate. A bidirectional screw is rotatably fitted within the opening, and clamping components are threaded onto both ends of the bidirectional screw. A protective box is mounted on the upper side of the mounting plate, containing the clamping components and the differential pressure transmitter body. A fixing component corresponds to the differential pressure transmitter body. This utility model utilizes a sliding plate that slides within a recessed block, causing multiple teeth to mesh with two sector gears, thereby driving two arc-shaped clamping plates to move closer or further apart. The distance between the two arc-shaped clamping plates can be adjusted according to different pipe sizes, thus clamping and fixing pipes of different sizes, achieving stable support for the differential pressure transmitter body, and effectively reducing the occurrence of pipe bending or damage.

Description

Technical Field

[0001] This utility model relates to the field of differential pressure transmitter technology, and specifically to a high-precision differential pressure transmitter. Background Technology

[0002] Differential pressure transmitters are detection and conversion components in process control systems. They are used to convert process parameters such as pressure, flow rate, and level of liquids and gases into electrical or digital signals. These electrical or digital signals are then input to display instruments, arithmetic units, and controllers, thereby enabling continuous detection and automatic control of the production process.

[0003] When a differential pressure transmitter measures pressure within a pipeline, the conduit at the lower end of the transmitter needs to be connected to the pipeline. However, relying solely on the conduit for support can easily lead to bending or damage, thus affecting the transmitter's accuracy. Therefore, there is an urgent need to design a high-precision differential pressure transmitter to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a high-precision differential pressure transmitter to address the aforementioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-precision differential pressure transmitter includes a mounting plate with a groove in the middle and an opening inside the mounting plate communicating with the groove. A bidirectional screw is rotatably fitted inside the opening, and clamping components are threaded onto both ends of the bidirectional screw. A protective box is mounted on the upper side of the mounting plate, and a fixing component and a differential pressure transmitter body are installed inside the protective box. The fixing component corresponds to the differential pressure transmitter body.

[0007] The clamping assembly includes a recess, a sliding plate that slides inside the recess, multiple teeth mounted on opposite sides of the sliding plate, two sector gears that rotate within the recess, and two arc-shaped clamping plates mounted on the shafts of the two sector gears, wherein the multiple teeth mesh with the two sector gears.

[0008] Furthermore, each of the four sector gears is equipped with a support assembly at its shaft center. The support assembly includes an L-shaped support frame, two first rods mounted on opposite sides of the L-shaped support frame, and two second rods mounted on opposite sides of the concave block.

[0009] Furthermore, the support assembly also includes a connecting rod rotatably engaged between the first rod and the second rod, one end of the L-shaped support frame rotatably engaged with one side of the arc-shaped clamping plate, and the L-shaped support frame slidably engaged within the recess.

[0010] Furthermore, each of the two recessed blocks has a groove on its inner side, and each of the two grooves is equipped with an electric guide rail. The output ends of the two electric guide rails are fixed to one side of the two sliding plates, and the sliding plates slide within the grooves.

[0011] Furthermore, a motor is installed at one end of the mounting plate, the output end of the motor is fixed to one end of the bidirectional screw, a slot communicating with the slide groove is opened on the lower side of the protective box, and a conduit is installed on the lower side of the differential pressure transmitter body.

[0012] Furthermore, the conduit corresponds to the slot, the conduit is located between the two recesses, and the fixing assembly includes a spring installed inside the protective box and a clamp installed at one end of the spring and corresponding to the differential pressure transmitter body.

[0013] Furthermore, a baffle is rotatably fitted on the upper side of the protective box, and multiple heat dissipation holes corresponding to the differential pressure transmitter body are opened on both opposite sides of the protective box, and the two concave blocks are slidably fitted in the sliding groove.

[0014] In the above technical solution, the high-precision differential pressure transmitter provided by this utility model has the following advantages:

[0015] 1. By using a bidirectional screw, the bidirectional screw engages with two clamping components, allowing the distance between the two clamping components to be adjusted according to the pipe length, thereby clamping and fixing pipes of different lengths.

[0016] 2. By sliding the plate inside the concave block, multiple teeth mesh with two sector gears and rotate, thereby driving the two arc-shaped clamping plates to move away from or closer to each other. The distance between the two arc-shaped clamping plates can be adjusted according to the pipe size, thereby clamping and fixing pipes of different sizes, achieving stable support for the differential pressure transmitter body, effectively reducing the occurrence of pipe bending or damage, and thus ensuring the detection effect of the differential pressure transmitter body. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a structural front view of an embodiment of the high-precision differential pressure transmitter of this utility model.

[0019] Figure 2 A schematic diagram of the mounting plate structure provided for an embodiment of the high-precision differential pressure transmitter of this utility model.

[0020] Figure 3 A schematic diagram of the slide structure provided for an embodiment of the high-precision differential pressure transmitter of this utility model.

[0021] Figure 4 A schematic diagram of the tooth structure provided for an embodiment of the high-precision differential pressure transmitter of this utility model.

[0022] 1. Mounting plate; 2. Slide groove; 3. Opening; 4. Bidirectional screw; 5. Protective box; 6. Differential pressure transmitter body; 7. Concave block; 8. Slide plate; 9. Tooth; 10. Sector gear; 11. Arc-shaped clamping plate; 12. L-shaped support frame; 13. First rod; 14. Second rod; 15. Connecting rod; 16. Groove; 17. Electric guide rail; 18. Motor; 19. Slot; 20. Guide tube; 21. Spring; 22. Clamping plate; 23. Baffle; 24. Heat dissipation hole. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] like Figure 1-4 As shown, the high-precision differential pressure transmitter provided in this embodiment of the present invention includes a mounting plate 1. A groove 2 is provided in the middle of the mounting plate 1. An opening 3 communicating with the groove 2 is provided inside the mounting plate 1. A bidirectional screw 4 is rotatably fitted inside the opening 3. Both ends of the bidirectional screw 4 are threadedly fitted with clamping components. A protective box 5 is installed on the upper side of the mounting plate 1. A fixing component and a differential pressure transmitter body 6 are installed inside the protective box 5. The fixing component corresponds to the differential pressure transmitter body 6. The clamping component includes a recess 7, a sliding plate 8 slidably fitted inside the recess 7, multiple teeth 9 installed on opposite sides of the sliding plate 8, two sector gears 10 rotatably fitted inside the recess 7, and two arc-shaped clamping plates 11 installed on the shaft center of the two sector gears 10. The multiple teeth 9 mesh with the two sector gears 10.

[0025] In this embodiment, the mounting plate 1 has a groove 2 in the middle and an opening 3 connected to the groove 2 inside the mounting plate 1. A bidirectional screw 4 is rotatably fitted inside the opening 3.

[0026] Specifically, a motor 18 is installed at one end of the mounting plate 1, and the output end of the motor 18 is fixed to one end of the bidirectional screw 4. A slot 19 connected to the slide 2 is opened on the lower side of the protective box 5. A conduit 20 is installed on the lower side of the differential pressure transmitter body 6. The motor 18 can drive the bidirectional screw 4 to rotate, so that the bidirectional screw 4 is threadedly engaged with the two concave blocks 7, thereby driving the two concave blocks 7 to move relative to each other, in preparation for clamping and fixing pipes of different lengths in the next step.

[0027] In this embodiment, both ends of the bidirectional screw 4 are threaded with clamping components;

[0028] Specifically, the conduit 20 corresponds to the slot 19 and is located between the two recesses 7. The fixing assembly includes a spring 21 installed inside the protective box 5 and a clamping plate 22 installed at one end of the spring 21 and corresponding to the differential pressure transmitter body 6. Through the spring 21, the clamping plate 22 can be driven to firmly clamp the periphery of the differential pressure transmitter body 6, which effectively improves the stability of the differential pressure transmitter body 6.

[0029] In this embodiment, a protective box 5 is installed on the upper side of the mounting plate 1. The protective box 5 contains a fixing component and a differential pressure transmitter body 6. The fixing component corresponds to the differential pressure transmitter body 6.

[0030] Specifically, the upper side of the protective box 5 is fitted with a baffle 23, and multiple heat dissipation holes 24 corresponding to the differential pressure transmitter body 6 are opened on both sides of the protective box 5. Two concave blocks 7 are slidably fitted in the slide groove 2. Through the multiple heat dissipation holes 24, the differential pressure transmitter body 6 can be cooled down, ensuring the normal use of the differential pressure transmitter body 6.

[0031] In this embodiment, the clamping assembly includes a recess 7, a sliding plate 8 that slides within the recess 7, multiple teeth 9 mounted on opposite sides of the sliding plate 8, two sector gears 10 that rotate within the recess 7, and two arc-shaped clamping plates 11 mounted on the shaft of the two sector gears 10. The multiple teeth 9 mesh with the two sector gears 10.

[0032] Specifically, the shafts of the four sector gears 10 are each equipped with a support assembly, which includes an L-shaped support frame 12, two first rods 13 mounted on opposite sides of the L-shaped support frame 12, and two second rods 14 mounted on opposite sides of the recess 7.

[0033] Specifically, the support assembly also includes a connecting rod 15 that is rotatably engaged between the first rod 13 and the second rod 14. One end of the L-shaped support frame 12 is rotatably engaged with one side of the arc-shaped clamping plate 11, and the L-shaped support frame 12 is slidably engaged in the recess 7. Through the connecting rod 15, the two L-shaped support frames 12 drive the two arc-shaped clamping plates 11 to clamp more stably, thereby improving the stability of the differential pressure transmitter body 6 during subsequent testing.

[0034] Specifically, the inner sides of the two concave blocks 7 are provided with grooves 16, and electric guide rails 17 are installed in the two grooves 16. The output ends of the two electric guide rails 17 are fixed to one side of the two slide plates 8. The slide plates 8 slide in the grooves 16. Through the electric guide rails 17, the slide plates 8 can be driven to move up and down, so that multiple teeth 9 mesh with two sector gears 10 and rotate, thereby driving the two arc-shaped clamping plates 11 to move relative to each other, in preparation for clamping and fixing pipes of different sizes in the next step.

[0035] Working steps: 1. When it is necessary to clamp pipes of different sizes, start the two electric guide rails 17 at the same time. The output ends of the two electric guide rails 17 drive the two slide plates 8 to move up and down in the two grooves 16, so that multiple teeth 9 mesh with the two sector gears 10 and rotate. Thus, the rotation of the two sector gears 10 drives the two L-shaped support frames 12 to rotate synchronously in the recess 7. At this time, the two ends of the four connecting rods 15 rotate and cooperate with the four first rods 13 and the four second rods 14, so that the two L-shaped support frames 12 drive the two arc-shaped clamping plates 11 to move closer or further away from each other, thereby achieving the clamping and fixing of pipes of different sizes. When the clamping and fixing of the pipe is canceled, the operation is reversed.

[0036] 2. When it is necessary to clamp pipes of different lengths, start the motor 18. The output end of the motor 18 drives the bidirectional screw 4 to rotate, so that the bidirectional screw 4 is threadedly engaged with the two concave blocks 7. Thus, the two concave blocks 7 drive the four arc-shaped clamping plates 11 to move closer or further away from each other. At this time, the two concave blocks 7 slide in the slide groove 2. Then start the two clamping components. At this time, the two clamping components clamp and fix the pipes of different lengths.

[0037] 3. When it is necessary to protect the differential pressure transmitter body 6, manually rotate the baffle 23 to open the protective box 5, and then place the differential pressure transmitter body 6 inside the protective box 5. At this time, the differential pressure transmitter body 6 presses against the clamping plate 22, causing the clamping plate 22 to drive the spring 21 to elastically extend and retract, thereby clamping and fixing the differential pressure transmitter body 6. After clamping, rotate the baffle 23 in the opposite direction and close the protective box 5 to achieve the protection of the differential pressure transmitter body 6.

[0038] 4. When it is necessary to detect the pressure inside the pipeline, connect the conduit 20 to the pipeline, and then start the differential pressure transmitter body 6. At this time, the differential pressure transmitter body 6 can detect and display the pressure inside the pipeline. When it is necessary to cool down the differential pressure transmitter body 6, the heat generated by the differential pressure transmitter body 6 can be discharged outside the protective box 5 through multiple heat dissipation holes 24. At the same time, the outside air can also enter the interior of the protective box 5 through multiple heat dissipation holes 24, and then cool down the surface of the differential pressure transmitter body 6, thus realizing the heat dissipation of the differential pressure transmitter body 6.

[0039] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-precision differential pressure transmitter, including a mounting plate (1), characterized in that, The mounting plate (1) has a groove (2) in the middle and an opening (3) communicating with the groove (2) inside. A bidirectional screw (4) is rotatably fitted inside the opening (3). Both ends of the bidirectional screw (4) are threaded with clamping components. A protective box (5) is installed on the upper side of the mounting plate (1). A fixing component and a differential pressure transmitter body (6) are installed inside the protective box (5). The fixing component corresponds to the differential pressure transmitter body (6). The clamping assembly includes a recess (7), a sliding plate (8) slidably fitted inside the recess (7), a plurality of teeth (9) mounted on opposite sides of the sliding plate (8), two sector gears (10) rotatably fitted inside the recess (7), and two arc-shaped clamping plates (11) mounted on the axial center of the two sector gears (10). The plurality of teeth (9) mesh with the two sector gears (10).

2. The high-precision differential pressure transmitter according to claim 1, characterized in that, Each of the four sector gears (10) is equipped with a support assembly at its shaft center. The support assembly includes an L-shaped support frame (12), two first rods (13) mounted on opposite sides of the L-shaped support frame (12), and two second rods (14) mounted on opposite sides of the recess (7).

3. The high-precision differential pressure transmitter according to claim 2, characterized in that, The support assembly further includes a connecting rod (15) rotatably engaged between the first rod (13) and the second rod (14), one end of the L-shaped support frame (12) rotatably engaged with one side of the arc-shaped clamping plate (11), and the L-shaped support frame (12) slidably engaged within the recess (7).

4. The high-precision differential pressure transmitter according to claim 1, characterized in that, The inner sides of the two recesses (7) are provided with grooves (16), and electric guide rails (17) are installed in the two grooves (16). The output ends of the two electric guide rails (17) are fixed to one side of the two slide plates (8), and the slide plates (8) are slidably fitted in the grooves (16).

5. The high-precision differential pressure transmitter according to claim 1, characterized in that, One end of the mounting plate (1) is equipped with a motor (18), the output end of the motor (18) is fixed to one end of the bidirectional screw (4), the lower side of the protective box (5) is provided with a slot (19) that communicates with the slide groove (2), and the lower side of the differential pressure transmitter body (6) is equipped with a conduit (20).

6. The high-precision differential pressure transmitter according to claim 5, characterized in that, The conduit (20) corresponds to the slot (19), and the conduit (20) is located between the two recesses (7). The fixing assembly includes a spring (21) installed inside the protective box (5) and a clamp (22) installed at one end of the spring (21) and corresponding to the differential pressure transmitter body (6).

7. The high-precision differential pressure transmitter according to claim 1, characterized in that, The upper side of the protective box (5) is rotatably fitted with a baffle (23). The protective box (5) has multiple heat dissipation holes (24) on both sides corresponding to the differential pressure transmitter body (6), and the two recesses (7) are slidably fitted in the groove (2).

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