Anti-blocking pressure transmitter

Abstract

The utility model discloses an anti-blocking pressure transmitter, which comprises a transmission pipeline, a filter screen is fixedly connected in the transmission pipeline, two fixed shafts are fixedly connected on the inner wall of the transmission pipeline, two rotating plates are arranged at the top of the filter screen, the fixed shafts are rotatably connected with the rotating plates, and the fixed shafts are fixedly connected with the transmission pipeline. A knocking block is fixedly connected to the end, away from the fixing shaft, of the rotating plate, a first connecting shaft is fixedly connected to one side of the knocking block, and a first rotating rod is rotationally connected to the first connecting shaft. Through the arrangement of the connecting rod mechanism, the rotating plate drives the knocking block to turn over in a reciprocating manner, so that the filter screen in the conveying pipeline is knocked, accumulations attached to filter screen holes are loosened and removed, the efficiency of the filter screen is recovered, the permeability of the filter screen is improved, and fluid can pass through the filter screen more smoothly; therefore, the monitoring accuracy and stability of the pressure transmitter are maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure transmitters, in particular to an anti-blocking type pressure transmitter. Background Art

[0002] A pressure transmitter is a device used to measure pressure and convert it into a standard electrical signal (such as voltage, current or digital signal) for output. They are often used in industrial automation systems to monitor and control pressure. Pressure transmitters usually have high precision and can accurately measure pressure changes. Pressure transmitters usually have good environmental adaptability and can work normally under different temperature, humidity and pressure conditions.

[0003] Existing pressure transmitters are usually installed directly at the pressure measuring port of the detection pipeline. When handling media containing solid particles, these impurities may enter the pressure interface of the transmitter and clog or block the channel of the pressure sensor at the interface, resulting in reduced accuracy or measurement failure. The blockage may cause the transmitter to be subjected to additional stress and pressure, increasing the risk of damage. Long-term blockage may damage the internal structure of the transmitter and prevent it from working properly. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing pressure transmitter is usually directly installed at the pressure measuring port of the detection pipeline, which is prone to blockage, affecting the monitoring accuracy of the pressure transmitter and increasing the risk of damage to the pressure transmitter.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: a blockage-proof pressure transmitter, including a transmission pipeline, a filter screen is fixedly connected inside the transmission pipeline, two fixed shafts are fixedly connected to the inner wall of the transmission pipeline, two rotating plates are arranged on the top of the filter screen, the fixed shaft is rotatably connected to the rotating plate, a knocking block is fixedly connected to one end of the rotating plate away from the fixed shaft, a first connecting shaft is fixedly connected to one side of the knocking block, and a first rotating rod is rotatably connected to the first connecting shaft.

[0006] The utility model is further configured such that a fixed box is fixedly connected to one side of the transmission pipeline, two motors are fixedly connected to one side of the inner wall of the fixed box, a rotating shaft is fixedly connected to the output end of the motor, the rotating shaft rotates and passes through the transmission pipeline, a sealing ring is sleeved on the rotating shaft, and the sealing ring is fixedly connected to the transmission pipeline.

[0007] Through the above technical solution, the pressure transmitter is usually used for measurement in an environment with high pressure or corrosive media, and the sealing ring can effectively prevent the leakage of the medium and ensure the safety and reliability of the system.

[0008] The utility model is further configured that the end away from the rotating shaft is fixedly connected to a second rotating rod, the other end of the second rotating rod is fixedly connected to a second connecting shaft, and the second connecting shaft is rotatably connected to the first rotating rod.

[0009] The utility model is further configured such that an input pipe is fixedly connected to one side of the transmission pipe, the input pipe is located below the filter screen, a one-way valve is fixedly connected to the input pipe, an end of the input pipe away from the transmission pipe is fixedly connected to a mounting flange, and a plurality of mounting holes are provided on the mounting flange.

[0010] Through the above technical solution, the one-way valve can prevent the medium from flowing back in the system. The backflow may cause unstable pressure transmitter output or damage other components in the system. By setting the one-way valve, it can be ensured that the medium can only flow in one direction to maintain the stability of the system.

[0011] The utility model is further configured such that a first flange is fixedly connected to the top of the transmission pipeline, a second flange is arranged on the top of the transmission pipeline, a pressure sensor is fixedly connected to the side of the second flange away from the transmission pipeline, and the second flange is fixedly connected to the first flange by a plurality of bolt and nut assemblies.

[0012] The utility model is further configured such that the transmission pipeline and the input pipeline are integrated, and a sealing cover is threadedly connected to a side of the transmission pipeline away from the pressure sensor.

[0013] Through the above technical solution, when monitoring, the sealing cover is tightly closed to form a sealed pipeline. When cleaning the filter, the sealing cover is removed so that the knocked-off dirt can be discharged from the pipeline, keeping the pipeline clean and allowing the fluid to pass through the filter more smoothly, thereby maintaining the accuracy of the monitoring pressure transmitter.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. The utility model provides a filter in the transmission pipeline to effectively prevent solid particles, impurities or other contaminants from entering the measuring channel of the pressure transmitter, thereby reducing the risk of blockage, which helps to keep the channel unobstructed, ensure the normal operation of the transmitter, and protect the pressure transmitter from damage by particles and contaminants, thereby extending its service life and reducing maintenance costs. At the same time, since the entry of impurities may interfere with the measurement of the pressure sensor and affect the accuracy and stability of its output, the filter can reduce such interference and improve the accuracy of the pressure transmitter;

[0016] 2. The utility model provides a rotating plate and a knocking block on the filter screen, and the rotating plate drives the knocking block to flip back and forth through a connecting rod mechanism, thereby achieving knocking on the filter screen, avoiding the accumulation of particles or impurities on the filter screen after a period of use, thereby affecting the filtering effect. By gently knocking the filter screen, the accumulation attached to the filter screen holes is loosened and removed, thereby restoring the efficiency of the filter screen, increasing its permeability, and allowing the fluid to pass more smoothly, thereby maintaining the accuracy and stability of the pressure transmitter. Keeping the filter screen clean and permeable can extend its service life, reduce the frequency of replacing the filter screen, and thus reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0018] Figure 2 It is a three-dimensional cross-sectional view of the utility model;

[0019] Figure 3 For this utility model Figure 2 Enlarged view of point A.

[0020] In the figure: 1. transmission pipeline; 2. filter screen; 3. fixed shaft; 4. rotating plate; 5. knocking block; 6. first connecting shaft; 7. first rotating rod; 8. second connecting shaft; 9. second rotating rod; 10. rotating shaft; 11. fixed box; 12. motor; 13. sealing ring; 14. first flange; 15. second flange; 16. bolt and nut assembly; 17. pressure sensor; 18. input pipeline; 19. one-way valve; 20. mounting flange; 21. sealing cover; 22. mounting hole. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0022] See also Figure 1 , Figure 2 and Figure 3 A blocking-proof pressure transmitter comprises a transmission pipeline 1, a filter screen 2 is fixedly connected inside the transmission pipeline 1, two fixed shafts 3 are fixedly connected to the inner wall of the transmission pipeline 1, two rotating plates 4 are arranged on the top of the filter screen 2, the fixed shaft 3 is rotatably connected to the rotating plate 4, a knocking block 5 is fixedly connected to one end of the rotating plate 4 away from the fixed shaft 3, a first connecting shaft 6 is fixedly connected to one side of the knocking block 5, and a first rotating rod 7 is rotatably connected to the first connecting shaft 6.

[0023] A fixed box body 11 is fixedly connected to one side of the transmission pipeline 1, and two motors 12 are fixedly connected to one side of the inner wall of the fixed box body 11. A rotating shaft 10 is fixedly connected to the output end of the motor 12. The rotating shaft 10 rotates and passes through the transmission pipeline 1. A sealing ring 13 is sleeved on the rotating shaft 10, and the sealing ring 13 is fixedly connected to the transmission pipeline 1; a second rotating rod 9 is fixedly connected to the end away from the rotating shaft 10, and a second connecting shaft 8 is fixedly connected to the other end of the second rotating rod 9, and the second connecting shaft 8 is rotatably connected to the first rotating rod 7.

[0024] An input pipe 18 is fixedly connected to one side of the transmission pipe 1, and the input pipe 18 is located below the filter screen 2. A one-way valve 19 is fixedly connected to the input pipe 18. An end of the input pipe 18 away from the transmission pipe 1 is fixedly connected to a mounting flange 20, and a plurality of mounting holes 22 are provided on the mounting flange 20; a first flange 14 is fixedly connected to the top of the transmission pipe 1, a second flange 15 is provided on the top of the transmission pipe 1, a pressure sensor 17 is fixedly connected to the side of the second flange 15 away from the transmission pipe 1, and the second flange 15 is fixedly connected to the first flange 14 by a plurality of bolt and nut assemblies 16; the transmission pipe 1 and the input pipe 18 are integrated, and a sealing cover 21 is threadedly connected to the side of the transmission pipe 1 away from the pressure sensor 17.

[0025] When the utility model is in use, when the pressure sensor 17 is operating for monitoring, the liquid enters the transmission pipeline 1 through the input pipeline 18, and when it is transmitted to the pressure measuring part of the pressure sensor 17 through the transmission pipeline 1, the pressure received by the resistance strain gauge at the lower end of the pressure sensor 17 is converted into an electrical signal, and the electrical signal is transmitted in real time to realize the pressure measurement operation. During the liquid transmission process, it first passes through the filter screen 2 and then is transmitted to the pressure measuring part of the pressure sensor 17, effectively preventing solid particles, impurities or other contaminants from entering the measuring channel of the pressure transmitter, thereby reducing the risk of blockage. After a period of time, the filter screen 2 During the use, some particles or impurities will accumulate. The sealing cover 21 is rotated to remove the sealing cover 21 from the transmission pipe 1, and the motor 12 is started. The motor 12 drives the rotating shaft 10 to rotate, and the rotating shaft 10 drives the second rotating rod 9 to rotate together, and cooperates with the first rotating rod 7 to make the rotating plate 4 and the knocking block 5 flip back and forth 90 degrees, so that the knocking block 5 knocks on the filter screen 2, and the dirt attached to the filter screen 2 is removed and discharged out of the transmission pipe 1, so as to restore the efficiency of the filter screen 2, increase its permeability, and allow the fluid to pass more smoothly, thereby maintaining the accuracy and stability of the pressure sensor 17.

[0026] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A blockage-proof pressure transmitter, comprising a transmission pipeline (1), characterized in that: A filter screen (2) is fixedly connected inside the transmission pipe (1), two fixed shafts (3) are fixedly connected to the inner wall of the transmission pipe (1), two rotating plates (4) are arranged on the top of the filter screen (2), the fixed shaft (3) is rotatably connected to the rotating plate (4), a knocking block (5) is fixedly connected to one end of the rotating plate (4) away from the fixed shaft (3), a first connecting shaft (6) is fixedly connected to one side of the knocking block (5), and a first rotating rod (7) is rotatably connected to the first connecting shaft (6).

2. The anti-blocking pressure transmitter according to claim 1, characterized in that: A fixed box (11) is fixedly connected to one side of the transmission pipeline (1), two motors (12) are fixedly connected to one side of the inner wall of the fixed box (11), a rotating shaft (10) is fixedly connected to the output end of the motor (12), the rotating shaft (10) rotates and penetrates the transmission pipeline (1), a sealing ring (13) is sleeved on the rotating shaft (10), and the sealing ring (13) is fixedly connected to the transmission pipeline (1).

3. The anti-blocking pressure transmitter according to claim 2, characterized in that: The end away from the rotating shaft (10) is fixedly connected to a second rotating rod (9), the other end of the second rotating rod (9) is fixedly connected to a second connecting shaft (8), and the second connecting shaft (8) is rotatably connected to the first rotating rod (7).

4. The anti-blocking pressure transmitter according to claim 1, characterized in that: An input pipe (18) is fixedly connected to one side of the transmission pipe (1), the input pipe (18) is located below the filter screen (2), a one-way valve (19) is fixedly connected to the input pipe (18), and a mounting flange (20) is fixedly connected to one end of the input pipe (18) away from the transmission pipe (1), and a plurality of mounting holes (22) are provided on the mounting flange (20).

5. The anti-blocking pressure transmitter according to claim 1, characterized in that: A first flange (14) is fixedly connected to the top of the transmission pipeline (1), a second flange (15) is arranged on the top of the transmission pipeline (1), a pressure sensor (17) is fixedly connected to the side of the second flange (15) away from the transmission pipeline (1), and the second flange (15) is fixedly connected to the first flange (14) via a plurality of bolt and nut assemblies (16).

6. The anti-blocking pressure transmitter according to claim 1, characterized in that: The transmission pipeline (1) and the input pipeline (18) are arranged in an integrated manner, and a sealing cover (21) is threadedly connected to the side of the transmission pipeline (1) away from the pressure sensor (17).

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