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CN-224216217-U - Quick calibration connecting device of Pirani vacuum gauge

CN224216217UCN 224216217 UCN224216217 UCN 224216217UCN-224216217-U

Abstract

The utility model provides a quick calibration connecting device of a Pirani vacuum gauge, which relates to the technical field of vacuum gauge connection and comprises a connecting box, wherein one end of the connecting box is provided with a flange plate, one end of the flange plate is provided with a rubber gasket, the surface of the flange plate is provided with a butt joint ring, the other end of the connecting box is provided with a connecting pipe, a protection component is arranged, in the use process, an external equipment port is inserted into a connecting column to realize fastening connection through rotation, when the external equipment port is inserted, the external equipment port is contacted with a protection plate and pushes the protection plate to rotate upwards, a torsion spring is compressed, a guide rod ensures that the torsion spring is stable under stress, deflection is avoided, when the connection is disconnected, the torsion spring drives the protection plate to rebound automatically, the port of the connecting column is closed, dust and sundries are effectively prevented from entering, automatic opening and closing protection when the external equipment is connected is realized, the connection stability is ensured, the automatic dust prevention and pollution prevention are also realized, and the measurement precision and the service life of the vacuum gauge are remarkably improved.

Inventors

  • Lan Binrui

Assignees

  • 羽众光科技(武汉)有限公司

Dates

Publication Date
20260508
Application Date
20250605

Claims (6)

  1. 1. The utility model provides a quick calibration connecting device of Pirani vacuum gauge, includes connecting box (1), its characterized in that, the one end of connecting box (1) is provided with ring flange (9), the surface of ring flange (9) is provided with docking collar (3), the other end of connecting box (1) is provided with connecting pipe (4), the one end that connecting box (1) was kept away from to connecting pipe (4) is provided with spliced pole (6), the spread groove has been seted up to the inside of spliced pole (6), be provided with protection subassembly (8) in the inner wall of spliced pole (6), protection subassembly (8) include fixed block (801), guide bar (802), torsion spring (803) and protection shield (804), the inner wall at spliced pole (6) is fixed to fixed block (801), rebound groove has been seted up to the bottom of fixed block (801), the both ends of guide bar (802) set up at the inside both ends of rebound groove, the inside of torsion spring (803) is cup jointed at the surface of guide bar (802), the top of torsion spring (803) sets up at the top of rebound groove (803), the bottom of protection shield (803) is set up.
  2. 2. The quick calibration connecting device of the Pirani vacuum gauge is characterized in that four groups of anti-skid grooves (5) are formed in the top and the bottom of the connecting box (1), and the four groups of anti-skid grooves (5) are arranged in a straight line.
  3. 3. The quick calibration connection device of a Pirani gauge according to claim 1, wherein one end of the flange plate (9) is provided with a rubber gasket (2), and the rubber gasket (2) is located in the butt joint ring (3).
  4. 4. The quick calibration connection device of a Pirani gauge according to claim 1, wherein a sealing ring (7) is arranged on the surface of the connection groove, and threads are arranged inside the connection groove.
  5. 5. The quick calibration connecting device of the Pirani gauge according to claim 1, wherein the connecting box (1) and the connecting column (6) are of cuboid structures.
  6. 6. A quick calibration coupling for a Pirani gauge according to claim 1, wherein the shape and size of the protective plate (804) is adapted to the shape and size of the inside of the coupling groove.

Description

Quick calibration connecting device of Pirani vacuum gauge Technical Field The utility model relates to the technical field of vacuum gauge connection, in particular to a quick calibration connection device of a Pirani vacuum gauge. Background According to the vacuum gauge online calibration device disclosed in the Chinese patent publication No. CN220437656U, the vacuum gauge online calibration device comprises a vacuum gauge, a fixed cylinder is fixedly sleeved on the outer periphery side of a detection head of the vacuum gauge, a plugging mechanism is arranged in the fixed cylinder, and the plugging mechanism performs plugging operation on an opening at the bottom end of the fixed cylinder. The utility model relates to the technical field of vacuum gauge online calibration devices. According to the utility model, in the use process of the vacuum gauge, a closed space is formed at the outer peripheral side of the vacuum gauge detection head through the mutual matching of the fixed cylinder, the plugging mechanism and the adjusting mechanism without disassembling the vacuum gauge, so that the calibration operation of the vacuum gauge is normally carried out, the vacuum gauge is not required to be disassembled when the vacuum gauge is calibrated, the on-line calibration operation is directly carried out, the device has a simple structure and convenient operation, the calibration operation of the existing vacuum gauge is hardly changed, and the device is easy to operate. However, the above device has problems in use in that when the connection device is not connected to an external apparatus, dust and suspended particles are easily accumulated at the port exposed to the air, and the long-term contact may cause contaminants to enter the inside, thereby affecting the stability of the subsequent connection and the signal transmission accuracy. Disclosure of utility model The utility model aims to solve the defects in the prior art, and provides a quick calibration connecting device of a Pirani vacuum gauge. In order to achieve the purpose, the connecting box comprises a connecting box, wherein one end of the connecting box is provided with a flange plate, one end of the flange plate is provided with a rubber gasket, the surface of the flange plate is provided with a butt joint ring, and the other end of the connecting box is provided with a connecting pipe. Preferably, four groups of anti-skid grooves are formed in the top and the bottom of the connecting box, and the four groups of anti-skid grooves are arranged in a straight line. Preferably, a connecting column is arranged at one end of the connecting pipe, and a connecting groove is formed in the connecting column. Preferably, a sealing ring is arranged on the surface of the connecting groove, threads are adopted in the connecting groove, and a protection component is arranged on the inner wall of the connecting column. Preferably, the protection subassembly includes fixed block, guide bar, torsion spring and protection shield, the one end setting of fixed block is at the inner wall of spliced pole, rebound groove has been seted up to the bottom of fixed block, the both ends setting of guide bar are at the inside both ends in rebound groove. Preferably, the torsion spring is sleeved on the surface of the guide rod, and the top of the torsion spring is arranged at the inner top of the rebound groove. Preferably, the bottom of the torsion spring is arranged at the top of the protection plate, and the protection plate is movably connected with the inside of the connecting groove. Advantageous effects According to the utility model, the arrangement of the butt joint ring, the rubber gasket, the sealing ring and the connecting column is adopted, a worker can quickly position the vacuum gauge probe through the butt joint ring and accurately butt-joint the flange plate and the vacuum gauge interface, the rubber gasket is arranged between the flange plate and the vacuum gauge port to ensure sealing, the connecting groove in the connecting column is convenient for calibrating and positioning external equipment, the sealing ring is arranged between the connecting column and the external equipment, the sealing effect is further enhanced, and the reliability and the operation convenience of the system are improved. According to the utility model, the protection component is adopted, during the use process, the external equipment port is inserted into the connecting column, the fastening connection is realized through rotation, the external equipment port is contacted with the protection plate and pushes the protection plate to rotate upwards when the external equipment port is inserted, the torsion spring is compressed, the guide rod ensures that the torsion spring is stable when being stressed, the offset is avoided, when the connection is disconnected, the torsion spring drives the protection plate to rebound automatically, the port of the connecting column is closed,