Shock-resistant pressure transmitter

Abstract

The application relates to the technical field of pressure transmitters, and discloses an anti-impact pressure transmitter which comprises a main body, a flange plate fixedly connected to the bottom of the main body, a diaphragm fixedly connected to the inner wall of the flange plate, the inside of the diaphragm being electrically connected to the main body, an inner tube body fixedly connected to the bottom of the flange plate, the flange plate and the inner tube body being in communication with each other, a filter disc being detachably arranged at the bottom of the inner tube body, a plurality of through holes being annularly arranged on the filter disc, an oscillating arm and the filter disc being arranged to prevent high-flow liquid from rushing into the inner tube body and damaging the diaphragm, to protect the normal use of the diaphragm, and to prevent sharp fluctuation of detection data, a limiting ring, a penetrating strip and a penetrating hole being arranged, the penetrating strip and the penetrating hole being dislocated, the cover being locked on the locking ring, the plugging degree of the filter disc aperture being further improved, and the sealing performance being improved.

Description

Technical Field

[0001] This invention relates to the field of pressure transmitter technology, specifically to an impact-resistant pressure transmitter. Background Technology

[0002] Pressure transmitters typically operate based on principles such as piezoresistive effect, capacitive effect, or piezoelectric effect. Taking a piezoresistive pressure transmitter as an example, when pressure is applied to the diaphragm of the sensor, the diaphragm deforms, causing the resistance of the pressure-sensitive resistor to change, which in turn causes the bridge to lose its balance and outputs an electrical signal that is proportional to the pressure.

[0003] For existing pressure transmitters equipped with filter discs, the flow path of the liquid in the pipeline is obstructed when water is initially supplied or the valve is closed, resulting in liquid backflow impact. In addition, the liquid velocity is increased during the process, causing the liquid to carry impurities that impact the transmitter diaphragm. The resulting pressure can damage the diaphragm or cause the detection data to fluctuate drastically, which is detrimental to the operation and use of the transmitter. Therefore, we propose an impact-resistant pressure transmitter. Summary of the Invention

[0004] The purpose of this invention is to provide an impact-resistant pressure transmitter to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution, including a main body, a flange fixedly connected to the bottom of the main body, a diaphragm fixedly connected to the inner wall of the flange, the diaphragm being electrically connected to the interior of the main body, an inner tube fixedly connected to the bottom of the flange, the flange and the inner tube communicating with each other, a filter disc detachably installed at the bottom of the inner tube, and a plurality of through holes arranged in a ring on the filter disc;

[0005] The bottom of the inner tube is symmetrically provided with electric actuators. The output shaft of the electric actuator is fixedly connected to a notched ring. The notched ring is slidably connected to the inner tube. A frustum is fixedly installed on the top of the notched ring. A push block is provided above the frustum. The push block is slidably connected to the inner tube, and one side abuts against the surface of the frustum.

[0006] A locking ring is fixedly connected to the top surface of the filter disc above the through hole, and the locking ring has symmetrical openings.

[0007] Several swing arms are rotatably mounted on the inner tube wall. One side of each swing arm abuts against a push block. A frame is slidably connected to each swing arm. A spring is fitted at the connection between the frame and the swing arm. Several racks are equidistantly arranged on one side of the inner wall of the frame. A gear is rotatably connected to the swing arm near the racks. A cover is fixedly connected to the bottom of the gear. Through strips are symmetrically installed on the inner wall of the cover. The through strips are adapted to the through openings, and the height of the through strips is lower than that of the through openings.

[0008] Preferably, a waterproof box is fixedly connected to the bottom of the filter disc, and a servo motor is detachably installed inside the waterproof box. A guide groove is symmetrically and through the center of the filter disc, and a limit ring is rotatably connected inside the guide groove. The bottom of the limit ring is rotatably connected to the servo motor.

[0009] Preferably, an internal gear ring is fixedly connected to the inner wall of the limiting ring, a second gear meshes with the surface of the internal gear ring, a third gear meshes with the second gear on one side of the internal gear ring, the second gear and the third gear are respectively rotatably connected to the filter disc, the third gear is coaxial with the limiting ring, and a disc is fixedly connected to the top of the third gear.

[0010] Preferably, a plurality of fins are arranged in a ring on the outer wall of the disk, and the surface of the fins abuts against one end of the frame.

[0011] Preferably, the surface of the notched ring has a notch perpendicular to the bottom of the push block to prevent it from colliding with the push block during the upward movement.

[0012] Preferably, a torsion spring is fixedly engaged at the axis on the side where the swing arm connects to the inner tube, and a stop shaft is fixedly connected to the inner tube near the torsion spring, with one end of the torsion spring abutting against the stop shaft.

[0013] Preferably, a limiting opening is provided at one end of the swing arm near the disc, and the outer surface of the limiting ring is movably engaged with the limiting opening to prevent the threaded strip from failing to align with the opening.

[0014] Preferably, the diameter of the shield is larger than the diameter of the locking ring, and the size of the opening is larger than the size of the strip.

[0015] Preferably, a mounting bracket is fixedly connected to the outer wall of the inner tube, and vertical shafts are slidably connected to both sides of the mounting bracket. Several buffer strips are hinged to the outside of the vertical shafts. The buffer strips are arc-shaped and used to reduce the impact force of the liquid. A sliding shaft is hinged to the end of the buffer strip away from the vertical shaft, and the sliding shaft is slidably connected to the inner tube.

[0016] Preferably, a drive motor is fixedly connected to the top of the mounting bracket, a single-axis disk is rotatably connected to the output end of the drive motor, a box is provided below the single-axis disk, a sliding groove is provided through the inside of the box, the bottom of the single-axis disk is slidably disposed inside the box, and the two sides of the box are fixedly connected to a vertical shaft respectively.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. In this invention, by setting up a swing arm and a filter disc, when the transmitter is in normal use, the filter disc with a larger aperture is less likely to clog the transmitter's detection end and can filter out large particulate impurities, thereby protecting the diaphragm. When the valve is closed, by pushing the truncated cone upward, the push block drives the swing arm to rotate downward by ninety degrees, so that the cover covers the locking ring located above the through hole, preventing highly flowing liquid from rushing into the inner tube and damaging the diaphragm, protecting the diaphragm for normal use, and preventing drastic fluctuations in the detection data;

[0019] 2. In this invention, by setting a limiting ring, a through strip, and a through hole, after the swing arm is attached to the filter disc, the limiting ring rotates and gets into the limiting hole of the swing arm, preventing the through strip from not aligning with the through hole. When the limiting ring rotates, it drives the fin plate to rotate in the opposite direction, thereby causing the gear to rotate and drive the through strip and through hole to misalign, so that the cover is locked on the locking ring, further improving the degree of sealing of the filter disc aperture and enhancing the sealing performance.

[0020] 3. In this invention, by setting a buffer strip, when the liquid backflow impacts, the single-axis disk causes the two vertical shafts to move the buffer strip, pull the buffer strip outward, and the buffer strip comes into contact with the backflow liquid, and spreads it to both sides of the inner tube body to protect the inner tube body and prevent the transmitter from shaking due to high-speed liquid impact. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the relevant structures of the frustum, push block, and torsion spring of the present invention;

[0024] Figure 4 This is a schematic diagram of the filter disc, through hole, and locking ring of the present invention;

[0025] Figure 5 This is a bottom view of the filter disc structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the disk, fin, and limiting ring of the present invention;

[0027] Figure 7 This is a schematic diagram of the piercing strip and the piercing opening of the present invention;

[0028] Figure 8 This is a schematic diagram of the cross-sectional structure of the inner tube of the present invention;

[0029] Figure 9 This is a schematic diagram of the structure of the buffer strip and the box body of the present invention.

[0030] In the diagram: 1. Main body; 101. Diaphragm; 2. Flange; 3. Inner tube; 4. Filter disc; 5. Through hole; 6. Electric actuator; 7. Notched ring; 8. Frustum; 9. Locking ring; 10. Push block; 11. Swing arm; 12. Torsion spring; 13. Stop shaft; 14. Frame; 15. Spring; 16. Rack; 17. Gear 1; 18. Waterproof box; 19. Servo motor; 20. Guide groove; 21. Limiting ring; 22. Limiting port; 23. Internal gear ring; 24. Gear 2; 25. Gear 3; 26. Disc; 27. Fin plate; 28. Cover; 29. ​​Through strip; 30. Through opening; 31. Mounting bracket; 32. Vertical shaft; 33. Buffer strip; 34. Sliding shaft; 35. Drive motor; 36. Single shaft disc; 37. Box body; 38. Sliding groove. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1 to 7 The present invention provides a technical solution: including a main body 1, a flange 2 fixedly connected to the bottom of the main body 1, a diaphragm 101 fixedly connected to the inner wall of the flange 2, the diaphragm 101 being electrically connected to the interior of the main body 1, an inner tube 3 fixedly connected to the bottom of the flange 2, the flange 2 and the inner tube 3 being interconnected, a filter disc 4 being detachably installed at the bottom of the inner tube 3, and a plurality of through holes 5 being arranged in a ring on the filter disc 4;

[0033] The bottom of the inner tube 3 is symmetrically provided with electric push rods 6. The output shaft of the electric push rod 6 is fixedly connected to the end of a notched ring 7. The notched ring 7 is slidably connected to the inner tube 3. A frustum 8 is fixedly installed on the top of the notched ring 7. A push block 10 is provided above the frustum 8. The push block 10 is slidably connected to the inner tube 3, and one side abuts against the surface of the frustum 8.

[0034] A locking ring 9 is fixedly connected to the top surface of the filter disc 4 above the through hole 5. The locking ring 9 has symmetrical through holes 30.

[0035] Several swing arms 11 are rotatably mounted on the inner tube 3. One side of the swing arm 11 abuts against the push block 10. A frame 14 is slidably connected to the swing arm 11. A spring 15 is sleeved at the connection between the frame 14 and the swing arm 11. Several racks 16 are equidistantly arranged on one side of the inner wall of the frame 14. A gear 17 is rotatably connected to the swing arm 11 near the rack 16. A cover 28 is fixedly connected to the bottom of the gear 17. A through strip 29 is symmetrically installed on the inner wall of the cover 28. The through strip 29 is adapted to the through opening 30, and the height of the through strip 29 is lower than that of the through opening 30.

[0036] A waterproof box 18 is fixedly connected to the bottom of the filter disc 4. A servo motor 19 is detachably installed inside the waterproof box 18. A guide groove 20 is symmetrically and through the axis of the filter disc 4. A limit ring 21 is rotatably connected inside the guide groove 20. The bottom of the limit ring 21 is rotatably connected to the servo motor 19.

[0037] An internal gear ring 23 is fixedly connected to the inner wall of the limiting ring 21. A gear 24 meshes with the surface of the internal gear ring 23. A gear 3 25 meshes with the side of the gear 24 opposite to the internal gear ring 23. The gear 24 and the gear 3 25 are rotatably connected to the filter disc 4 respectively. The gear 3 25 is coaxial with the limiting ring 21. A disc 26 is fixedly connected to the top of the gear 3 25.

[0038] A number of fins 27 are arranged in a ring on the outer wall of the disc 26, and the surface of the fins 27 abuts against one end of the frame 14.

[0039] The surface of the notched ring 7 has a notch perpendicular to the bottom of the push block 10 to prevent it from colliding with the push block 10 during the upward movement;

[0040] A torsion spring 12 is fixedly snapped at the axis on the side where the swing arm 11 connects to the inner tube 3. A stop shaft 13 is fixedly connected to the inner tube 3 near the torsion spring 12, and one end of the torsion spring 12 abuts against the stop shaft 13.

[0041] A limit opening 22 is provided at one end of the swing arm 11 near the disc 26. The outer surface of the limit ring 21 is engaged with the limit opening 22 to prevent the through strip 29 from failing to align with the through opening 30.

[0042] The diameter of the shield 28 is larger than the diameter of the locking ring 9, and the size of the through 30 is larger than the size of the through strip 29;

[0043] In this embodiment, the filter disc 4 used is a product with a slightly larger pore size. Although the filter disc 4 has a large pore size, small-sized particulate impurities are usually not easy to damage the membrane 101. Therefore, using the filter disc 4 to intercept larger particulate impurities can allow more fluid to pass through at the same time, which improves the filtration efficiency to a certain extent and reduces the pressure loss and flow rate drop caused by impurities clogging the filter disc 4.

[0044] In this embodiment, after the shield 28 is rotated, the through strip 29 is misaligned with the through opening 30, and the shield 28 further covers the through hole 5 of the filter disc 4, thereby improving the sealing and protection performance.

[0045] Please see Figures 8 to 9 The present invention provides a technical solution: a mounting bracket 31 is fixedly connected to the outer wall of the inner tube body 3, and a vertical shaft 32 is slidably connected to both sides of the mounting bracket 31. Several buffer strips 33 are hinged to the outside of the vertical shaft 32. The buffer strips 33 are arc-shaped and used to reduce the impact force of the liquid. A sliding shaft 34 is hinged to the end of the buffer strip 33 away from the vertical shaft 32. The sliding shaft 34 is slidably connected to the inner tube body 3.

[0046] A drive motor 35 is fixedly connected to the top of the mounting bracket 31. A single-axis disk 36 is rotatably connected to the output end of the drive motor 35. A box 37 is provided below the single-axis disk 36. A sliding groove 38 is provided through the inside of the box 37. The bottom of the single-axis disk 36 is slidably disposed inside the box 37. The two sides of the box 37 are fixedly connected to the vertical shaft 32 respectively.

[0047] In this embodiment, the drive motor 35 drives the single-axis disk 36 to rotate continuously. The vertical shaft 32 on the single-axis disk 36 revolves around the axis of the drive motor 35, thereby moving back and forth inside the box 37. During the process, the rotational motion is converted into linear motion, so that the buffer bars 33 on both sides are pulled at the same time, guiding the liquid to flow to both sides of the inner tube 3, which can reduce the impact force.

[0048] The method of use and advantages of this invention: The working process of this shock-resistant pressure transmitter is as follows:

[0049] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown:

[0050] S1: When the valve is closed, the controller first drives the electric push rod 6 and the drive motor 35 to work. The output shaft of the electric push rod 6 pushes the notched ring 7 upward. During the process, the truncated cone 8 drives several push blocks 10 to abut against the outside of the inner tube 3, so that the push blocks 10 move horizontally. The push blocks 10 drive the top of the swing arm 11 to swing downward, so that the torsion spring 12 at the connecting shaft of the swing arm 11 is twisted. After the push blocks 10 are pushed, the swing arm 11 completes a ninety-degree rotation, and its lower surface is in contact with the filter plate 4. The cover 28 covers the locking ring 9 and blocks the through hole 5 on the filter plate 4.

[0051] S2: After the through hole 5 is completely covered, start the servo motor 19. Its output shaft drives the limiting ring 21 to rotate a certain distance along the guide groove 20. When the limiting ring 21 rotates, the several rods fixedly connected to its exterior are engaged in the limiting port 22 at the front end of the horizontal swing arm 11 and locked, keeping both sides of the swing arm 11 horizontal. When the limiting ring 21 rotates, it drives the gear 24 and gear 25 to rotate through the internal gear ring 23. Through the rotation of gear 25, the disc 26 interacts with the limiting ring 21. Rotating in the opposite direction, the fin plate 27 on the outer wall of the disc 26 abuts against the front side of the frame 14. As the disc 26 continues to rotate, the fin plate 27 pushes the frame 14 to slide on the swing arm 11 towards the spring 15 and compresses the spring 15. During the rotation of the frame 14, the rack 16 moves synchronously. The rack 16 drives the gear 17 to rotate, causing the cover 28 to rotate. At the same time, it drives the through strip 29 to rotate at the bottom of the locking ring 9, causing the through strip 29 to move away from the through opening 30.

[0052] S3: When the drive motor 35 starts, it drives the single-shaft disk 36 to rotate continuously. During the process, the rotational motion is converted into linear motion, causing the housing 37 to drive the vertical shafts 32 on both sides to move back and forth on the mounting bracket 31. At the same time, the vertical shafts 32 pull the buffer strip 33 to open outward and maintain an arc shape. The buffer strip 33 pulls the sliding shaft 34, so that the buffer strip 33 buffers the impact force generated by the high-speed liquid, protects the inner tube 3, and thus prevents the transmitter from shaking and affecting the detection data.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An impact-resistant pressure transmitter, characterized in that, Includes a main body (1), a flange (2) is fixedly connected to the bottom of the main body (1), a diaphragm (101) is fixedly connected to the inner wall of the flange (2), the diaphragm (101) is electrically connected to the interior of the main body (1), an inner tube (3) is fixedly connected to the bottom of the flange (2), the flange (2) and the inner tube (3) are interconnected, a filter plate (4) is detachably installed at the bottom of the inner tube (3), and a number of through holes (5) are arranged in a ring on the filter plate (4); The bottom of the inner tube (3) is symmetrically provided with electric push rods (6). The output shaft of the electric push rod (6) is fixedly connected with a notched ring (7). The notched ring (7) is slidably connected to the inner tube (3). A frustum (8) is fixedly installed on the top of the notched ring (7). A push block (10) is provided above the frustum (8). The push block (10) is slidably connected to the inner tube (3) and one side abuts against the surface of the frustum (8). The frustum (8) pushes several push blocks (10) against the outside of the inner tube (3), so that the push blocks (10) move horizontally. A horizontal sliding groove adapted to the push block (10) is opened on the inner wall of the inner tube (3). The frustum (8) is a cone structure with a smaller top and a larger bottom. The side of the push block (10) is set as an inclined surface adapted to the outer circumferential surface of the frustum (8), and the inclined surface fits against the outer circumferential surface of the frustum (8). A locking ring (9) is fixedly connected to the top surface of the filter disc (4) above the through hole (5), and the locking ring (9) has symmetrical openings (30). Several swing arms (11) are rotatably mounted on the wall of the inner tube (3). The bottom side of the swing arm (11) at the connection with the inner tube (3) abuts against the push block (10). The upper part of the swing arm (11) in contact with the push block (10) is connected to the wall of the inner tube (3) through a rotating shaft. A torsion spring (12) is fixedly engaged at the axis of the swing arm (11) at the connection with the inner tube (3). A stop shaft (13) is fixedly connected to the inner tube (3) near the torsion spring (12). One end of the torsion spring (12) abuts against the stop shaft (13). The push block (10) moves horizontally, and the push block (10) drives the top of the swing arm (11) to swing downward, so that the top of the swing arm (11) at the connection shaft of the swing arm (11) The torsion spring (12) is twisted. After the push block (10) is pushed, the swing arm (11) completes a 90-degree rotation. A frame (14) is slidably connected to the swing arm (11). A spring (15) is sleeved at the connection between the frame (14) and the swing arm (11). Several racks (16) are equidistantly arranged on one side of the inner wall of the frame (14). A gear (17) is rotatably connected to the swing arm (11) near the rack (16). A cover (28) is fixedly connected to the bottom of the gear (17). A through strip (29) is symmetrically installed on the inner wall of the cover (28). The through strip (29) is adapted to the through opening (30), and the height of the through strip (29) is lower than that of the through opening (30).

2. The shock-resistant pressure transmitter according to claim 1, characterized in that: A waterproof box (18) is fixedly connected to the bottom of the filter disc (4). A servo motor (19) is detachably installed inside the waterproof box (18). A guide groove (20) is symmetrically and through the center of the filter disc (4). A limit ring (21) is rotatably connected inside the guide groove (20). The bottom of the limit ring (21) is rotatably connected to the servo motor (19).

3. The shock-resistant pressure transmitter according to claim 2, characterized in that: An internal gear ring (23) is fixedly connected to the inner wall of the limiting ring (21). A gear two (24) meshes with the surface of the internal gear ring (23). A gear three (25) meshes with the side of the gear two (24) relative to the internal gear ring (23). The gear two (24) and the gear three (25) are rotatably connected to the filter disc (4). The gear three (25) is coaxial with the limiting ring (21). A disc (26) is fixedly connected to the top of the gear three (25).

4. The shock-resistant pressure transmitter according to claim 3, characterized in that: The outer wall of the disc (26) is provided with a number of fins (27) arranged in a ring, and the surface of the fins (27) abuts against one end of the frame (14).

5. The shock-resistant pressure transmitter according to claim 1, characterized in that: The notched ring (7) has a notch on its surface perpendicular to the bottom of the push block (10) to prevent it from colliding with the push block (10) during the upward movement.

6. The shock-resistant pressure transmitter according to claim 3, characterized in that: The swing arm (11) has a limit opening (22) at one end near the disc (26). The outer surface of the limit ring (21) is engaged with the limit opening (22) to prevent the thread strip (29) from failing to connect with the thread opening (30).

7. The shock-resistant pressure transmitter according to claim 6, characterized in that: The diameter of the shield (28) is larger than the diameter of the locking ring (9), and the size of the opening (30) is larger than the size of the strip (29).

8. The shock-resistant pressure transmitter according to claim 1, characterized in that: An installation bracket (31) is fixedly connected to the outer wall of the inner tube (3). A vertical shaft (32) is slidably connected to both sides of the installation bracket (31). Several buffer strips (33) are hinged to the outside of the vertical shaft (32). The buffer strips (33) are arc-shaped and used to reduce the impact force of the liquid. A sliding shaft (34) is hinged to the end of the buffer strip (33) away from the vertical shaft (32). The sliding shaft (34) is slidably connected to the inner tube (3).

9. The shock-resistant pressure transmitter according to claim 8, characterized in that: A drive motor (35) is fixedly connected to the top of the mounting bracket (31). A single-axis disk (36) is rotatably connected to the output end of the drive motor (35). A box (37) is provided below the single-axis disk (36). A sliding groove (38) is provided through the inside of the box (37). The bottom of the single-axis disk (36) is slidably disposed inside the box (37). The two sides of the box (37) are fixedly connected to the vertical shaft (32) respectively.

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