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CN-224231148-U - Anti-blocking differential pressure transmitter

CN224231148UCN 224231148 UCN224231148 UCN 224231148UCN-224231148-U

Abstract

The utility model discloses an anti-blocking differential pressure transmitter which comprises a fixed seat, wherein silicon piezoresistive sensors are respectively arranged on the upper side of the inside of the fixed seat, a purifying box is arranged at the front end of the fixed seat, a protective cover is arranged at the upper end of the purifying box, filter screens are respectively arranged on the left side and the right side of the inside of the purifying box, the anti-blocking differential pressure transmitter further comprises a dredging mechanism, the dredging mechanism comprises a fixed plate, an adjusting plate, an output rod and a cam, the output rod is rotationally connected to the middle part of the rear wall of the protective cover, the front side of the outer cambered surface of the output rod is respectively provided with the cam, the fixed plate and the adjusting plate are respectively arranged on the upper side of the inside of the protective cover, the outer cambered surface of the cam on the front side is contacted with the upper surface of the adjusting plate, the outer cambered surface of the cam on the rear side is contacted with the lower surface of the fixed plate, the driving assembly is positioned outside the purifying box, the problem that a cleaning brush cannot normally rotate due to corrosion of a bevel gear caused by a medium is solved, and the anti-blocking differential pressure transmitter can normally work.

Inventors

  • YE LV
  • JIN YIYU

Assignees

  • 安徽晟易仪表制造有限公司

Dates

Publication Date
20260512
Application Date
20250723

Claims (8)

  1. 1. The anti-blocking differential pressure transmitter comprises a fixed seat (1), wherein silicon piezoresistive sensors (13) are respectively arranged on the upper side of the inside of the fixed seat (1), a purifying box (6) is arranged at the front end of the fixed seat (1), a protective cover (9) is arranged at the upper end of the purifying box (6), and filter screens (7) are respectively arranged on the left side and the right side of the inside of the purifying box (6), and the anti-blocking differential pressure transmitter is characterized by further comprising a dredging mechanism (8); The dredging mechanism (8) comprises a fixed plate (805), an adjusting plate (806), an output rod (807) and a cam (808), wherein the output rod (807) is rotationally connected to the middle of the rear wall of the protective cover (9), the front side of the outer cambered surface of the output rod (807) is respectively provided with the cam (808), the upper side of the inner part of the protective cover (9) is respectively provided with the fixed plate (805) and the adjusting plate (806), the outer cambered surface of the cam (808) at the front side is contacted with the upper surface of the adjusting plate (806), and the outer cambered surface of the cam (808) at the rear side is contacted with the lower surface of the fixed plate (805).
  2. 2. The anti-blocking differential pressure transmitter according to claim 1, further comprising a mounting seat (2) and a singlechip (3), wherein the mounting seat (2) is arranged in the middle of the upper end of the fixed seat (1), the left side and the right side of the lower end of the mounting seat (2) are respectively fixedly connected with a silicon piezoresistive sensor (13), the singlechip (3) is arranged at the right end of the mounting seat (2), the input end of the singlechip (3) is electrically connected with an external power supply, and the silicon piezoresistive sensors (13) are electrically connected with the singlechip (3) in a bidirectional manner.
  3. 3. The anti-blocking differential pressure transmitter according to claim 1, wherein the dredging mechanism (8) further comprises upright rods (801), cleaning brushes (802), connecting plates (803), upright plates (804) and sealing rubber rings (810), the sealing rubber rings (810) are respectively arranged in sliding holes formed in the front sides of the top walls of the purifying tanks (6), the upright rods (801) are respectively connected with inner cambered surfaces of the sealing rubber rings (810) which are vertically adjacent in a sliding mode, the lower ends of the two upright rods (801) which are horizontally adjacent are fixedly connected with the upper ends of one cleaning brush (802), the rear ends of the two cleaning brushes (802) are respectively connected with the front ends of the filter screens (7) which are longitudinally adjacent in a contact mode, the upper ends of the four upright rods (801) are fixedly connected with the lower ends of the connecting plates (803), the upright plates (804) are arranged in the middle of the upper ends of the connecting plates, the output rods (807) are located in regulating grooves formed in the middle of the front ends of the upright plates (804), and the upper sides of the rear ends of the upright plates (804) and the lower sides of the front ends are respectively fixedly connected with fixing plates (806).
  4. 4. The anti-blocking differential pressure transmitter according to claim 2, wherein the dredging mechanism (8) further comprises a motor (809), the motor (809) is arranged in the middle of the rear end of the protective cover (9), the front end of an output shaft of the motor (809) is fixedly connected with the rear end of the output rod (807), and the input end of the motor (809) is electrically connected with the output end of the singlechip (3).
  5. 5. The anti-blocking differential pressure transmitter as set forth in claim 2, wherein the lower end of the mounting base (2) is respectively provided with an isolating membrane (14), and the silicon piezoresistive sensors (13) are respectively positioned in the vertically adjacent isolating membranes (14).
  6. 6. The anti-blocking differential pressure transmitter according to claim 5, wherein the left side and the right side of the inside of the fixed seat (1) are respectively provided with a high-pressure cavity (4) and a low-pressure cavity (5), pressure release openings formed in the middle of the rear walls of the high-pressure cavity (4) and the low-pressure cavity (5) are respectively provided with a pressure release valve (15), and the isolating membrane (14) is respectively positioned in the vertically adjacent high-pressure cavity (4) and low-pressure cavity (5).
  7. 7. The anti-blocking differential pressure transmitter according to claim 6, further comprising connecting pipes (10), wherein the connecting pipes (10) are respectively arranged in conveying ports formed in the middle of the front walls of the high-pressure cavity (4) and the low-pressure cavity (5), the front ends of the connecting pipes (10) are respectively communicated with connecting ports formed in the left side and the right side of the rear end of the purifying box (6), mounting pipes (11) are respectively arranged in avoidance grooves formed in the left side and the right side of the front end of the purifying box (6), and mounting valves are respectively connected in series in the middle of the mounting pipes (11).
  8. 8. The anti-blocking differential pressure transmitter as set forth in claim 1, wherein drain pipes (12) are arranged in drain outlets formed in the front side of the bottom wall of the purifying box (6), the drain pipes (12) are located in the front side of the filter screen (7), and drain valves are connected in series in the middle of the drain pipes (12).

Description

Anti-blocking differential pressure transmitter Technical Field The utility model relates to the technical field of pressure measurement, in particular to an anti-blocking differential pressure transmitter. Background The patent of the publication No. CN 21908042807U discloses an anti-blocking differential pressure transmitter, which comprises a transmitter body, wherein a high-pressure pipeline interface and a low-pressure pipeline interface are arranged on the transmitter body, a filter assembly for filtering liquid entering the high-pressure pipeline interface or the low-pressure pipeline interface is arranged on the transmitter body, and the anti-blocking differential pressure transmitter can drive a cleaning brush to rotate through meshing connection among bevel gears in the using process of the anti-blocking differential pressure transmitter, but is directly arranged in a first cavity, and the bevel gears are damaged by corrosion when the medium has corrosivity (such as acid, alkali, saline solution and the like) and cannot rotate due to corrosion of the medium, so that the bevel gears are damaged, and the meshing precision and the transmission efficiency of the bevel gears are affected. Disclosure of utility model The utility model aims to overcome the existing defects, and provides the anti-blocking differential pressure transmitter, which can drive a cleaning brush to vertically reciprocate through the cooperation of a fixed plate, an adjusting plate and a cam, and a driving assembly is positioned outside a purifying box, so that the problem that the cleaning brush cannot normally rotate due to corrosion of a bevel gear caused by a medium is solved, the cleaning effect of a filter screen is improved, the risk of blocking is reduced, the normal work of the anti-blocking differential pressure transmitter is ensured, and the problems in the background art can be effectively solved. The utility model provides a technical scheme that the anti-blocking differential pressure transmitter comprises a fixed seat, wherein silicon piezoresistive sensors are respectively arranged on the upper side of the inside of the fixed seat, a purifying box is arranged at the front end of the fixed seat, a protective cover is arranged at the upper end of the purifying box, filter screens are respectively arranged on the left side and the right side of the inside of the purifying box, and a dredging mechanism is further arranged; The dredging mechanism comprises a fixed plate, an adjusting plate, an output rod and a cam, wherein the output rod is rotationally connected to the middle part of the rear wall of the protective cover, the front side of the outer cambered surface of the output rod is respectively provided with the cam, the upper side of the inner part of the protective cover is respectively provided with the fixed plate and the adjusting plate, the outer cambered surface of the cam at the front side is contacted with the upper surface of the adjusting plate, the outer cambered surface of the cam at the rear side is contacted with the lower surface of the fixed plate, the cleaning brush can be driven to vertically reciprocate through the matched arrangement of the fixed plate and the adjusting plate and the cam, the driving assembly is positioned outside the purifying box, the problem that the cleaning brush cannot normally rotate due to corrosion of a bevel gear caused by a medium is solved, the cleaning effect on a filter screen is improved, the blocking risk is reduced, and the anti-blocking differential pressure transmitter can normally work is ensured. Further, still include mount pad and singlechip, the mount pad sets up in the middle part of fixing base upper end, and the left and right sides of mount pad lower extreme is fixedly connected with silicon piezoresistive sensor respectively, and the singlechip sets up in the right-hand member of mount pad, and the input and the external power supply electricity of singlechip are connected, and silicon piezoresistive sensor all is connected with the singlechip is two-way electricity, can regulate and control the inside electrical components of equipment. Further, dredging mechanism still includes pole setting, cleaning brush, connecting plate, riser and sealing rubber circle, sealing rubber circle sets up respectively in the slide hole of seting up of the front side of purifying box roof, the pole setting respectively with the intrados sliding connection of vertical adjacent sealing rubber circle, the lower extreme of two horizontal pole setting all with the upper end fixed connection of a cleaning brush, the rear end of two cleaning brushes respectively with the front end contact of the filter screen of vertical adjacent, the upper end of four pole setting all with the lower extreme fixed connection of connecting plate, the middle part of connecting plate upper end is provided with the riser, the output pole is located the regulating tank of seting up at the mid