An anti-interference pressure transmitter

Abstract

The application discloses an anti-interference pressure transmitter and relates to the technical field of the transmitter.The application comprises a transmitter main body, the bottom of the transmitter main body is provided with a spring column, the bottom of the spring column is fixedly installed with a base, the top center of the base is provided with a detection assembly, the detection assembly is communicated with the transmitter main body, the inner wall of the base is provided with a measuring diaphragm, the measuring diaphragm is elastic, the outer wall of the base is fixedly installed with a sealing ring, the outer wall of the sealing ring is fixedly installed with a fixing ring, the outer wall of the fixing ring is fixedly installed with a rubber ring, a plurality of buffer sheets are fixedly installed between the inner wall of the rubber ring and the arc surface of the fixing ring, and the buffer sheets are equidistantly distributed.The application can ensure that the force of pipeline vibration is not transmitted to the base, ensure that the measuring diaphragm always keeps a stable state to detect water flow, prevent the deformation amplitude of the measuring diaphragm from being increased due to external force, and avoid the detection result precision of the detection assembly from being reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transmitters, in particular to an anti-interference pressure transmitter. BACKGROUND

[0002] The pressure transmitter is a device for converting pressure into pneumatic signal or electric signal for control and remote transmission. It can convert the physical pressure parameters of gas, liquid, etc. sensed by the pressure measuring element sensor into standard electric signal to supply secondary instruments such as indicating alarm instrument, recording instrument and regulator for measurement, indication and process regulation.

[0003] The patent with patent announcement No. CN111964811B discloses an anti-interference pressure transmitter, which comprises a measuring diaphragm, a diaphragm mounting seat and a transmitter body. The measuring diaphragm is installed on the diaphragm mounting seat and is installed on the measured element through the diaphragm mounting seat. The measuring diaphragm is electrically connected with the transmitter body. It also comprises a damping element and a shielded wire. The damping element is installed between the diaphragm mounting seat and the measured element. The measuring diaphragm is electrically connected with the transmitter body through the shielded wire. The shielded wire comprises a wire, an insulating layer, a metal braided sleeve and an outer sheath from inside to outside. The metal braided sleeve is connected with a lead-out wire. The end of the lead-out wire away from the metal braided sleeve is located outside the outer sheath. The patent not only has the function of reducing the influence of external environmental vibration on the deformation of the measuring diaphragm, but also is not easy to cause the distortion of the deformation of the measuring diaphragm even if the external environmental vibration is large, which can effectively ensure the accuracy of the measurement result. In addition, the patent has better anti-electromagnetic interference function.

[0004] However, the device still has some shortcomings. The device reduces vibration through the spring and the elastic sealing pad. However, when the equipment is running in water for detection, the pipeline will inevitably vibrate when the pipeline passes through the equipment for water transportation. At this time, the detection by the pressure transmitter will be disturbed by the vibration of the pipeline, and the vibration force will easily interfere with the detection process of the transmitter and reduce the accuracy of the detection data. SUMMARY

[0005] In view of the shortcomings of the prior art, the present application provides an anti-interference pressure transmitter, which solves the problems in the background art.

[0006] In order to achieve the above object, the present application is realized by the following technical scheme: An anti-interference pressure transmitter, comprising a transmitter main body, and a spring column is arranged at the bottom of the transmitter main body, a base is fixedly installed at the bottom of the spring column, a detection assembly is arranged at the top center of the base, and the detection assembly is communicated with the transmitter main body, a measuring diaphragm is arranged at the inner wall of the base, and the measuring diaphragm has elasticity, a sealing ring is fixedly installed at the outer wall of the base, a fixed ring is fixedly installed at the outer wall of the sealing ring, a rubber ring is fixedly installed at the outer wall of the fixed ring, a plurality of buffer sheets are fixedly installed between the inner wall of the rubber ring and the arc surface of the fixed ring, and the buffer sheets are equidistantly distributed, the fixed ring is installed on the pipeline, at this time, the base and the transmitter main body are located above the water conveying pipeline, when water flows from right to left and contacts the bottom of the measuring diaphragm, the pressure of water flow causes the measuring diaphragm to deform, when the pipeline conveys water source through a water pump, the vibration generated by the equipment operation causes the pipeline to vibrate, at this time, the rubber ring is used for buffering, the sealing ring separates the fixed ring and the base, the sealing ring seals the water source to prevent overflow, and the rubber ring vibrates to cause the buffer sheet to vibrate and deform.

[0007] According to the above technical scheme, the rubber ring bottom is fixedly installed with a filter plate, the outer wall of the filter plate is provided with a sliding groove, the inner wall of the fixed ring is fixedly installed with an underwater motor, the bottom output end of the underwater motor is fixedly installed with a reciprocating screw rod, the outer wall of the reciprocating screw rod is penetrated and slidably installed with an arc plate, a clamping block is arranged between the inner part of the arc plate and the reciprocating screw rod, the clamping block is in contact with the spiral groove of the reciprocating screw rod, the outer wall arc surface of the arc plate is slidably connected at the inner wall of the filter plate, a scraping ring is fixedly installed on the side away from the center of the base through a cylinder, and the inner wall of the scraping ring is in contact with the outer wall of the filter plate, a conveying device for discharging dirt away from the measuring diaphragm is arranged below the filter plate, the filter plate is used for intercepting impurities in the water source, the underwater motor is started, the conveying end of the underwater motor drives the coaxial rotation of the reciprocating screw rod, the reciprocating screw rod is in contact with the arc plate through the clamping block, at this time, the reciprocating screw rod is limited by the spiral groove and the arc plate is limited by the filter plate, so that the arc plate slides up and down along the inner wall of the filter plate, and the arc plate drives the scraping ring to slide up and down along the outer wall of the filter plate through the cylinder.

[0008] According to the above technical scheme, the conveying device comprises a collecting box and a conveying pipe, the collecting box is fixedly installed at the bottom of the filter plate, an opening is arranged at the top right side of the collecting box, the conveying pipe is fixedly installed at the bottom of the collecting box, the conveying pipe is located away from the measuring diaphragm at the left side, and the conveying pipe is communicated with the collecting box, a stay-preventing device for preventing secondary overflow of dirt in water is arranged inside the right side of the conveying pipe, the collecting box collects the impurities scraped off by the scraping ring, and the conveying pipe conveys the impurities away from the measuring diaphragm.

[0009] According to the above technical scheme, the conveying device further comprises a pressing plate, an L-shaped cover plate and an expansion plate, the left side of the pressing plate is fixedly installed on the right side of the outer wall of the scraping ring, the bottom of the L-shaped cover plate is slidingly installed at the opening on the right side of the top of the collection box through a spring, and the top of the expansion plate is hingedly connected to the circumferential surface of the filter plate; the inclined surface of the expansion plate is located on the movement track of the pressing plate, and the bottom of the expansion end of the expansion plate is hingedly connected to the L-shaped cover plate; when the scraping ring moves up and down, the pressing plate moves synchronously; when the pressing plate moves downward, the inclined surface of the expansion plate is contacted, the hinged shaft of the expansion plate starts to rotate, the expansion end of the expansion plate is contacted with the bottom of the inner wall of the L-shaped cover plate, and the L-shaped cover plate moves away from the center of the collection box and opens the shielding area of the collection box.

[0010] According to the above technical scheme, the conveying device further comprises an inclined chute plate, two L-shaped pressing rods and a shielding plate, the top of the inclined chute plate is fixedly installed on the bottom of the pressing plate, the two L-shaped pressing rods are slidingly installed in the inclined chute plate through a cross rod, and the left side of the L-shaped pressing rod is slidingly connected to the outer wall of the collection box; the left side of the shielding plate is hingedly connected to the right inner wall of the conveying pipe through a torsion spring, and the bottom of the L-shaped pressing rod is in contact with the top of the shielding plate; the L-shaped cover plate drives the inclined chute plate to move synchronously, the inclined chute plate drives the L-shaped pressing rod to move synchronously, the L-shaped pressing rod is limited by the collection box, the connecting rod slides in the inclined chute plate from top to bottom, the L-shaped pressing rod moves synchronously through the connecting rod, the L-shaped pressing rod presses the shielding plate downward to move toward the inner wall of the conveying pipe to close the water inlet of the conveying pipe, and then the L-shaped cover plate resets to drive the inclined chute plate and the L-shaped pressing rod to reset, and the top of the shielding plate is automatically reset by the torsion spring when the downward pressure disappears.

[0011] According to the above technical scheme, the anti-stay device comprises two inclined rods, a U-shaped frame and two slotted plates, the top of each of the two inclined rods is hingedly connected to the bottom edge of the shielding plate, the bottom of the U-shaped frame is slidingly installed on the inner wall of the bottom of the conveying pipe, and the right side of the U-shaped frame is hingedly connected to the bottom of the inclined rod; the right side of each of the two slotted plates is hingedly connected to the inner wall of the U-shaped frame through a torsion spring, and the slotted plates are symmetrically distributed about the axis of the U-shaped frame; when the shielding plate is opened and reset, the inclined rods move left and right, the U-shaped frame slides synchronously on the inner wall of the conveying pipe, the conveying pipe drives the slotted plates to move synchronously, and when the shielding plate is closed, the slotted plates move toward the direction of the water flow when the water flow suddenly flows into the inside of the conveying pipe, the water flow impacts the slotted plates to make the slotted plates swing away from the center of the conveying pipe.

[0012] According to the technical scheme, the anti-stay device further comprises a protruding block plate and a striking plate, the protruding block plate is fixedly installed on the left side of the U-shaped frame, protruding blocks on the surface of the protruding block plate are connected to the protruding block plate through springs, the striking plate is fixedly installed on the inner wall of the conveying pipe away from the center of the U-shaped frame, and the striking plate is located on the movement track of the protruding block plate, the U-shaped frame drives the protruding block plate to move left and right, when the protruding block plate moves left, the protruding block plate collides with the striking plate, the protruding block moves towards the center of the U-shaped frame through the resistance between the protruding block and the striking plate, and then the protruding block is reset through the spring force.

[0013] According to the technical scheme, the anti-stay device further comprises a protruding block plate and a striking plate, the protruding block plate is fixedly installed on the left side of the U-shaped frame, and the protruding block plate is located below the protruding block plate, a plurality of brush plates are equidistantly and rotatably installed on the inner wall of the protruding block plate, the outer wall of the brush plate is in contact with the bottom of the inner wall of the conveying pipe, the U-shaped frame drives the protruding block plate to move left and right, the protruding block plate drives the brush plate to move synchronously, the brush plate starts to rotate through the friction generated by the contact between the brush plate and the bottom of the inner wall of the conveying pipe, and the brush plate sweeps the particles deposited on the bottom of the inner wall of the conveying pipe.

[0014] The application provides an anti-interference pressure transmitter.

[0015] (1) The anti-interference pressure transmitter is provided with an anti-impact device, a transmitter main body, a base, a detection assembly and a measuring diaphragm, so that the detection assembly detects the pressure generated when the measuring diaphragm deforms and converts the pressure into electric energy, the transmitter main body converts the electric energy into data for display, the sealing ring, the fixing ring, the rubber ring and the buffer plate cooperate to ensure that the vibration force of the pipeline cannot be transmitted to the base, so that the measuring diaphragm always maintains a stable state to detect the water flow, prevents the additional force from increasing the deformation amplitude of the measuring diaphragm, and avoids the decrease of the detection result precision of the detection assembly; the filter plate, the underwater motor, the reciprocating screw rod, the arc-shaped plate and the scraping ring cooperate to scrape off the particle impurities intercepted on the outer wall of the filter plate through the scraping ring, prevent the particle impurities from impacting the measuring diaphragm to cause secondary stress, avoid the blocking phenomenon of the filter plate due to the impurities, and avoid the decrease of the water flow force to cause errors in the detection result.

[0016] (2) The present application is provided with a conveying device, through the cooperation of the pressing plate, the collecting box, the conveying pipe, the pressing plate, the L-shaped cover plate and the telescopic plate, the conveying pipe conveys impurities away from the measuring diaphragm; at the same time, the telescopic end of the telescopic plate drives the L-shaped cover plate to move away from the center of the collecting box and opens the shielding area of the collecting box, so that the impurity particles are scraped and fall into the collecting box to realize centralized collection, further avoiding the blocking phenomenon of the filter plate filter hole; through the cooperation of the inclined chute plate, the L-shaped pressing rod and the shielding plate, when the L-shaped cover plate is opened, the shielding plate covers and shields the conveying pipe, preventing the water from jumping between the two openings, and at the same time, avoiding the impurity particles floating to the bottom of the measuring diaphragm to cause impact, ensuring that the measuring diaphragm can run normally for a long time, and avoiding damage to the measuring diaphragm.

[0017] (3) The present application is provided with a conveying device, through the cooperation of the pressing plate, the collecting box, the conveying pipe, the pressing plate, the L-shaped cover plate and the telescopic plate, the conveying pipe conveys impurities away from the measuring diaphragm; at the same time, the telescopic end of the telescopic plate drives the L-shaped cover plate to move away from the center of the collecting box and opens the shielding area of the collecting box, so that the impurity particles are scraped and fall into the collecting box to realize centralized collection, further avoiding the blocking phenomenon of the filter plate filter hole; through the cooperation of the inclined chute plate, the L-shaped pressing rod and the shielding plate, when the L-shaped cover plate is opened, the shielding plate covers and shields the conveying pipe, preventing the water from jumping between the two openings, and at the same time, avoiding the impurity particles floating to the bottom of the measuring diaphragm to cause impact, ensuring that the measuring diaphragm can run normally for a long time, and avoiding damage to the measuring diaphragm. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of the whole application;

[0019] Figure 2 is a schematic diagram of the partial structure of the application;

[0020] Figure 3 is a schematic diagram of the anti-impact device of the application;

[0021] Figure 4 is a schematic diagram of the anti-impact device of the application from the top;

[0022] Figure 5 is a schematic diagram of the conveying device of the application;

[0023] Figure 6 is a schematic diagram of the conveying device of the application from the top;

[0024] Figure 7 is a schematic diagram of the anti-stay device of the application;

[0025] Figure 8 is a schematic diagram of the anti-stay device of the application from the left side.

[0026] In the figure: 1, the main body of the transmitter; 2, the base; 3, the detection assembly; 31, the measuring diaphragm; 4, the conveying device; 41, the collection box; 42, the conveying pipe; 43, the pressing plate; 44, the L-shaped cover plate; 45, the telescopic plate; 46, the inclined chute plate; 47, the L-shaped pressing rod; 48, the shielding plate; 5, the anti-stay device; 51, the inclined rod; 52, the U-shaped frame; 53, the slotted plate; 54, the protruding block plate; 55, the impact plate; 56, the cross plate; 57, the brush plate; 6, the sealing ring; 7, the fixing ring; 8, the rubber ring; 9, the buffer sheet; 10, the filter plate; 11, the underwater motor; 12, the reciprocating screw rod; 13, the arc plate; 14, the scraping ring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0028] Please refer to Figures 1-8 An embodiment of the present application is: an anti-interference pressure transmitter, comprising a transmitter main body 1, and a spring column is arranged at the bottom of the transmitter main body 1, a base 2 is fixedly installed at the bottom of the spring column, a detection assembly 3 is arranged at the top center of the base 2, the detection assembly 3 is communicated with the transmitter main body 1, a measuring diaphragm 31 is arranged at the inner wall of the base 2, the measuring diaphragm 31 has elasticity, a sealing ring 6 is fixedly installed at the outer wall of the base 2, a fixing ring 7 is fixedly installed at the outer wall of the sealing ring 6, a rubber ring 8 is fixedly installed at the outer wall of the fixing ring 7, a plurality of buffer sheets 9 are fixedly installed between the inner wall of the rubber ring 8 and the arc surface of the fixing ring 7, the plurality of buffer sheets 9 are equidistantly distributed, the detection assembly 3 detects the pressure generated when the measuring diaphragm 31 deforms and converts the pressure into electric energy, and the electric energy is converted into data display through the transmitter main body 1; the vibration force of the rubber ring 8 is secondarily eliminated by the deformed force of the buffer sheet 9, through the above cooperation, it is ensured that the force of pipeline vibration cannot be transmitted to the base 2, it is ensured that the measuring diaphragm 31 always maintains a stable state to detect the water flow, it is prevented that the additional force increases the deformation amplitude of the measuring diaphragm 31, and it is avoided that the detection result accuracy of the detection assembly 3 is reduced.

[0029] The bottom of the rubber ring 8 is fixedly installed with a filter plate 10, and a sliding groove is formed in the outer wall of the filter plate 10. The inner wall of the fixed ring 7 is fixedly installed with an underwater motor 11, and the bottom output end of the underwater motor 11 is fixedly installed with a reciprocating screw rod 12. The outer wall of the reciprocating screw rod 12 penetrates and is slidably installed with an arc-shaped plate 13. A clamping block is arranged between the inner portion of the arc-shaped plate 13 and the reciprocating screw rod 12, and the clamping block is in contact with the spiral groove of the reciprocating screw rod 12. The outer wall arc surface of the arc-shaped plate 13 is slidably connected to the inner wall of the filter plate 10. The side of the arc-shaped plate 13 away from the center of the base 2 is fixedly installed with a scraping ring 14 through a cylinder, and the inner wall of the scraping ring 14 is in contact with the outer wall of the filter plate 10. The filter plate 10 is provided below with a conveying device 4 for discharging dirt away from the measuring diaphragm 31. Through the above cooperation, the secondary stress caused by the impact of particulate matter on the measuring diaphragm 31 is prevented, and the cleanliness of the outer wall of the filter plate 10 is ensured to avoid the blocking phenomenon of the filter plate 10 due to impurities, and to avoid the decrease of the flow force of the water source leading to errors in the detection results.

[0030] In use, the fixed ring 7 is installed in the hole formed on the surface of the pipeline. At this time, the base 2 and the transmitter main body 1 are both located above the water conveying pipeline. When the water flow is conveyed from right to left and contacts the bottom of the measuring diaphragm 31, the pressure of the water flow promotes the deformation of the measuring diaphragm 31. The detection assembly 3 detects the pressure generated when the measuring diaphragm 31 deforms and converts it into electric energy. The transmitter main body 1 converts the electric energy into data display. When the pipeline conveys the water source through a water pump, the vibration generated by the operation of the equipment promotes the vibration of the pipeline. At this time, the characteristics of the rubber ring 8 are used for shock absorption, and the sealing ring 6 separates the fixed ring 7 and the base 2. The sealing ring 6 seals the water source to prevent overflow. At the same time, the vibration of the rubber ring 8 promotes the vibration and deformation of the buffer piece 9. The buffer piece 9 eliminates the vibration force of the rubber ring 8 twice through the deformed force. Through the above cooperation, the vibration force transmitted to the base 2 is greatly weakened, and the measuring diaphragm 31 always maintains a stable state to detect the water flow. The increase of the deformation amplitude of the measuring diaphragm 31 caused by the external force is prevented, and the detection result precision of the detection assembly 3 is reduced. The impurities in the water source are intercepted through the filter plate 10, and the underwater motor 11 is started. The underwater motor 11 drives the coaxial rotation of the reciprocating screw rod 12. The reciprocating screw rod 12 is in contact with the arc-shaped plate 13 through the clamping block. At this time, the reciprocating screw rod 12 is limited by the spiral groove, and the arc-shaped plate 13 is limited by the filter plate 10. The arc-shaped plate 13 slides up and down along the inner wall of the filter plate 10. The arc-shaped plate 13 drives the scraping ring 14 to slide up and down along the outer wall of the filter plate 10 through the cylinder. The particulate impurities intercepted on the outer wall of the filter plate 10 are scraped off through the scraping ring 14. Through the above cooperation, the secondary stress caused by the impact of particulate matter on the measuring diaphragm 31 is prevented, and the cleanliness of the outer wall of the filter plate 10 is ensured to avoid the blocking phenomenon of the filter plate 10 due to impurities, and to avoid the decrease of the flow force of the water source leading to errors in the detection results.

[0031] Please refer to Figures 1-8On the basis of the above-mentioned embodiment, the conveying device 4 is further included in another embodiment of the present application.

[0032] The conveying device 4 includes a collecting box 41 and a conveying pipe 42, the collecting box 41 is fixedly installed at the bottom of the filter plate 10, and an opening is arranged at the top right side of the collecting box 41, the conveying pipe 42 is fixedly installed at the bottom of the collecting box 41, the left side of the conveying pipe 42 is located away from the measuring diaphragm 31, and the conveying pipe 42 is in communication with the collecting box 41, and the inner right side of the conveying pipe 42 is provided with the anti-stagnation device 5 for preventing secondary overflow of impurities in water.

[0033] The conveying device 4 further includes a pressing plate 43, an L-shaped cover plate 44 and an expansion plate 45, the left side of the pressing plate 43 is fixedly installed at the right side of the outer wall of the scraping ring 14, the bottom of the L-shaped cover plate 44 is slidingly installed at the opening at the top right side of the collecting box 41 through a spring, the top of the expansion plate 45 is hinged to the circumferential surface of the filter plate 10, the inclined surface of the expansion plate 45 is located on the movement track of the pressing plate 43, the bottom of the expansion plate 45 is hinged to the L-shaped cover plate 44 at the expansion end, the expansion end of the expansion plate 45 drives the L-shaped cover plate 44 to move away from the center of the collecting box 41 and opens the shielding area of the collecting box 41, the scraping ring 14 scrapes the impurity particles attached to the surface of the filter plate 10 and falls into the inside of the collecting box 41 to realize centralized collection, prevents the impurities from being mixed in water and secondarily dispersed, and further avoids the phenomenon of blocking the filter holes of the filter plate 10.

[0034] The conveying device 4 further includes an inclined chute plate 46, two L-shaped pressing rods 47 and a shielding plate 48, the top of the inclined chute plate 46 is fixedly installed at the bottom of the pressing plate 43, the two L-shaped pressing rods 47 are slidingly installed in the inside of the inclined chute plate 46 through a cross bar, and the left side of the L-shaped pressing rod 47 is slidingly connected to the outer wall of the collecting box 41, the left side of the shielding plate 48 is hinged to the inner right side of the conveying pipe 42 through a torsion spring, and the bottom of the L-shaped pressing rod 47 is in contact with the top of the shielding plate 48, the above-mentioned cooperation causes the shielding plate 48 to cover and shield the conveying pipe 42 when the L-shaped cover plate 44 is opened, prevents the phenomenon of water jumping between the two openings, guarantees the stable impurity conveying effect of the conveying pipe 42, simultaneously avoids the impurity particles floating to the bottom of the measuring diaphragm 31 when water jumps, guarantees the long-term normal operation of the measuring diaphragm 31, and avoids the damage of the measuring diaphragm 31.

[0035] In use, the collection box 41 collects the impurities scraped off by the scraper ring 14, and the delivery pipe 42 delivers the impurities away from the measuring diaphragm 31; at this time, the scraper ring 14 moves up and down to drive the pressing plate 43 to move synchronously, the pressing plate 43 moves downward to abut against the inclined surface of the telescopic plate 45, the hinge shaft of the telescopic plate 45 starts to rotate, at this time, the telescopic end of the telescopic plate 45 abuts against the bottom of the inner wall of the L-shaped cover plate 44, and the telescopic end of the telescopic plate 45 drives the L-shaped cover plate 44 to move away from the center of the collection box 41 and opens the hole covered by the L-shaped cover plate 44 on the top of the collection box 41, so that the impurity particles adhered to the surface of the filter plate 10 are scraped off by the scraper ring 14 and fall into the collection box 41 to be collected, preventing the impurities from being mixed in the water to be dispersed again and further avoiding the filter holes of the filter plate 10 from being blocked; the L-shaped cover plate 44 drives the inclined chute plate 46 to move synchronously, the inclined chute plate 46 drives the L-shaped pressing rod 47 to move synchronously, the L-shaped pressing rod 47 is limited by the collection box 41, so that the connecting rod slides in the inclined chute of the inclined chute plate 46 from top to bottom, the L-shaped pressing rod 47 moves synchronously through the connecting rod, at this time, the L-shaped pressing rod 47 presses the shielding plate 48 downward to move toward the inner wall of the delivery pipe 42 to close the water inlet of the delivery pipe 42, then the L-shaped cover plate 44 resets to drive the inclined chute plate 46 and the L-shaped pressing rod 47 to reset, at this time, the top of the shielding plate 48 disappears by the automatic reset of the torsional spring, the above cooperation causes the L-shaped cover plate 44 to open to cover the delivery pipe 42 by the shielding plate 48, preventing the water from jumping between the two openings, ensuring the stable impurity delivery effect of the delivery pipe 42, and avoiding the impurity particles from floating to the bottom of the measuring diaphragm 31 to cause impact when the water jumps, ensuring the long-term normal operation of the measuring diaphragm 31 and avoiding the damage of the measuring diaphragm 31.

[0036] Please refer to Figures 1-8 On the basis of the above embodiment, another embodiment of the present application further comprises a stay-away device 5.

[0037] The stay-away device 5 comprises two inclined rods 51, a U-shaped frame 52 and two slotted plates 53, the top of each of the two inclined rods 51 is hinged to the bottom edge of the shielding plate 48, the bottom of the U-shaped frame 52 is slidingly installed on the inner wall of the bottom of the delivery pipe 42, and the right side of the U-shaped frame 52 is hinged to the bottom of the inclined rod 51, the right side of each of the two slotted plates 53 is hinged to the inner wall of the U-shaped frame 52 by a torsional spring, and the slotted plates 53 are symmetrically distributed about the axis of the U-shaped frame 52, the reciprocating swing of the slotted plates 53 relatively reduces the flow aperture of the delivery pipe 42, and the water flow speed is inversely proportional to the cross-sectional area of the pipe, so that the water flow speed in the delivery pipe 42 is increased and the impurity deposition in the delivery pipe 42 is reduced.

[0038] The anti-stay device 5 further comprises a bump plate 54 and a striking plate 55, the right side of the bump plate 54 is fixedly installed on the left side of the U-shaped frame 52, the bumps on the surface of the bump plate 54 are slidably connected through springs, the striking plate 55 is fixedly installed on the inner wall of the conveying pipe 42 away from the center of the U-shaped frame 52, and the striking plate 55 is located on the movement track of the bump plate 54. The impurities scraped down by the scraper ring 14 under the vibration force are crisp and neat when falling into the collection box 41, the adhesion amount of the impurities on the bottom of the filter plate 10 is reduced, and the cleanliness of the outer wall of the filter plate 10 is further improved.

[0039] The anti-stay device 5 further comprises a horizontal plate 56 and a plurality of brush plates 57, the right side of the horizontal plate 56 is fixedly installed on the left side of the U-shaped frame 52, and the horizontal plate 56 is located below the bump plate 54, the front and back sides of the plurality of brush plates 57 are equally spaced and rotatably installed on the inner wall of the horizontal plate 56, the outer wall of the brush plate 57 is in contact with the bottom of the inner wall of the conveying pipe 42, and the adhesion strength of the particulate matter is reduced through the vibration force of the bump plate 54, thereby preventing the secondary overflow phenomenon of the particulate matter due to the reciprocating opening and closing of the shielding plate 48, and ensuring that the conveying effect of the conveying pipe 42 on the impurities is not disturbed by the shielding plate 48.

[0040] In use, the shielding plate 48 is opened and the reset drives the inclined rod 51 to move left and right, the inclined rod 51 pushes the U-shaped frame 52 to slide synchronously on the inner wall of the conveying pipe 42, the U-shaped frame 52 drives the slotted plate 53 to move synchronously, when the shielding plate 48 is closed and opened suddenly, the water flow suddenly flows into the inside of the conveying pipe 42, the U-shaped frame 52 drives the slotted plate 53 to move to the direction of the water flow, at this time, the water flow impacts the slotted plate 53, and the slotted plate 53 swings away from the center of the conveying pipe 42, and then the slotted plate 53 is reset by the torsional spring, and the reciprocating swing of the slotted plate 53 relatively reduces the flow aperture of the inside of the conveying pipe 42, and then increases the water pressure when the water flow passes through the inside of the conveying pipe 42, and the larger water pressure can improve the effect of the water flow carrying away impurities and reduce the impurities deposited in the inside of the conveying pipe 42; the U-shaped frame 52 drives the protruding block plate 54 to move left and right, the protruding block plate 54 moves to the left and collides with the impact plate 55, the protruding block moves to the center of the U-shaped frame 52 by the resistance between the protruding block and the impact plate 55, and then the protruding block is reset by the spring elastic force, the protruding block plate 54 and the impact plate 55 reciprocate and collide to generate vibration, the vibration force promotes the impurities scraped by the scraper ring 14 to fall into the collecting box 41 at a faster and smoother speed, reduces the adhesion amount of the impurities at the bottom of the filter plate 10, and further improves the cleanliness of the outer wall of the filter plate 10; the U-shaped frame 52 drives the horizontal plate 56 to move left and right, the horizontal plate 56 drives the brush plate 57 to move synchronously, the brush plate 57 starts to rotate by the friction force and the scouring force of the water flow generated by the contact with the inner wall of the conveying pipe 42, the brush plate 57 sweeps the particles deposited on the inner wall of the water inlet of the conveying pipe 42, and the vibration force of the protruding block plate 54 reduces the adhesion strength of the particles, thereby preventing the particles from being secondarily overflowed due to the reciprocating opening and closing of the shielding plate 48, and ensuring that the conveying effect of the impurities by the conveying pipe 42 is not disturbed by the shielding plate 48.

[0041] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes to the technical solutions and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An anti-interference pressure transmitter, comprising a transmitter body (1), wherein a spring column is provided at the bottom of the transmitter body (1), a base (2) is fixedly installed at the bottom of the spring column, a detection component (3) is provided at the center of the top of the base (2), and the detection component (3) is in communication with the transmitter body (1), and a measuring diaphragm (31) is provided on the inner wall of the base (2), and the measuring diaphragm (31) is elastic, characterized in that: A sealing ring (6) is fixedly installed on the outer wall of the base (2), a fixing ring (7) is fixedly installed on the outer wall of the sealing ring (6), a rubber ring (8) is fixedly installed on the outer wall of the fixing ring (7), and a plurality of buffer pieces (9) are fixedly installed between the inner wall of the rubber ring (8) and the arc surface of the fixing ring (7), and the plurality of buffer pieces (9) are equidistantly distributed. A filter plate (10) is fixedly installed at the bottom of the rubber ring (8), and a sliding groove is provided on the outer wall of the filter plate (10). An underwater motor (11) is fixedly installed on the inner wall of the fixing ring (7). A reciprocating screw (12) is fixedly installed at the bottom output end of the underwater motor (11). An arc plate (13) is slidably installed through the outer wall of the reciprocating screw (12). A locking block is provided between the inside of the arc plate (13) and the reciprocating screw (12), and the locking block contacts the spiral groove of the reciprocating screw (12). The arc surface of the outer wall of the arc plate (13) is slidably connected to the inner wall of the filter plate (10). A scraper ring (14) is fixedly installed on the side of the arc plate (13) away from the center of the base (2) through a cylinder, and the inner wall of the scraper ring (14) contacts the outer wall of the filter plate (10). A conveying device (4) for discharging dirt away from the measuring membrane (31) is provided below the filter plate (10).

2. The anti-tamper pressure transmitter of claim 1, wherein: The conveying device (4) includes a collection box (41) and a conveying pipe (42). The top of the collection box (41) is fixedly installed at the bottom of the filter plate (10), and an opening is provided on the right side of the top of the collection box (41). The top of the conveying pipe (42) is fixedly installed at the bottom of the collection box (41). The left side of the conveying pipe (42) is located away from the measuring membrane (31), and the conveying pipe (42) is connected to the collection box (41). An anti-retention device (5) is provided inside the right side of the conveying pipe (42) to prevent secondary overflow of dirt in the water.

3. The intrinsically safe pressure transmitter of claim 2, wherein: The conveying device (4) also includes a pressure plate (43), an L-shaped cover plate (44), and a telescopic plate (45). The pressure plate (43) is fixedly installed on the right side of the outer wall of the scraper ring (14) on the left side. The bottom of the L-shaped cover plate (44) is slidably installed at the top right opening of the collection box (41) by a spring. The top of the telescopic plate (45) is hinged to the circumferential surface of the filter plate (10). The inclined surface of the telescopic plate (45) is located on the movement trajectory of the pressure plate (43), and the bottom of the telescopic end of the telescopic plate (45) is hinged to the L-shaped cover plate (44).

4. The intrinsically safe pressure transmitter of claim 3, wherein: The conveying device (4) further includes a sloping trough plate (46), two L-shaped pressure rods (47) and a baffle plate (48). The top of the sloping trough plate (46) is fixedly installed at the bottom of the pressure plate (43). The two L-shaped pressure rods (47) are slidably installed inside the sloping trough plate (46) through a crossbar. The left side of the L-shaped pressure rod (47) is slidably connected to the outer wall of the collection box (41). The left side of the baffle plate (48) is hinged to the inner wall of the right side of the conveying pipe (42) by a torsion spring. The bottom of the L-shaped pressure rod (47) is in contact with the top of the baffle plate (48).

5. The intrinsically safe pressure transmitter of claim 4, wherein: The anti-dwelling device (5) includes two diagonal rods (51), a U-shaped frame (52), and two slotted plates (53). The tops of the two diagonal rods (51) are hinged to the bottom edge of the baffle plate (48). The bottom of the U-shaped frame (52) is slidably installed on the bottom of the inner wall of the conveying pipe (42), and the right side of the U-shaped frame (52) is hinged to the bottom of the diagonal rods (51). The right sides of the two slotted plates (53) are hinged to the inner wall of the U-shaped frame (52) by torsion springs, and the slotted plates (53) are symmetrically distributed around the axis of the U-shaped frame (52).

6. The intrinsically safe pressure transmitter of claim 5, wherein: The anti-dwelling device (5) also includes a protrusion plate (54) and an impact plate (55). The right side of the protrusion plate (54) is fixedly installed on the left side of the U-shaped frame (52). The protrusions on the surface of the protrusion plate (54) are slidably connected by springs. The impact plate (55) is fixedly installed on the inner wall of the conveying pipe (42) on the side away from the center of the U-shaped frame (52), and the impact plate (55) is located on the movement trajectory of the protrusion plate (54).

7. An anti-interference pressure transmitter according to claim 6, characterized in that: The anti-dwelling device (5) also includes a horizontal plate (56) and several brush plates (57). The right side of the horizontal plate (56) is fixedly installed on the left side of the U-shaped frame (52), and the horizontal plate (56) is located below the protrusion plate (54). The brush plates (57) are equidistant on both sides and rotatably installed on the inner wall of the horizontal plate (56). The outer wall of the brush plate (57) is in contact with the bottom of the inner wall of the conveying pipe (42).

Images