A dust-proof gas inspection device used in the research and development stage of the tested object

Abstract

The present application relates to a dust-proof gas inspection device used in the development stage of a test piece, and relates to the technical field of aerospace, which includes: a support block; a fixing assembly, which is arranged on the support block and used to fix the support block on the test piece; a nozzle assembly, which includes a nozzle part and an adjustment part, and the nozzle part includes a telescopic nozzle tube, a first connecting hose, a second connecting hose and a connecting pipe; the telescopic nozzle tube is passed through the support block, and the side wall itself is hollow inside, the first connecting hose is connected to one end of the inner wall of the telescopic nozzle tube, the second connecting hose is sleeved on the first connecting hose, and is connected to one end of the outer wall of the telescopic nozzle tube, and the connecting pipe is connected to the first connecting hose and the second connecting hose through the adjustment part. The end of the connecting pipe is away from the telescopic nozzle pipe, and the adjustment part is used to connect the connecting pipe to the first connecting hose or connect between the first connecting hose and the second connecting hose. The present application has the effect of making the life of the threaded connecting hole of the test piece less susceptible to loss during the development stage.

Description

Technical Field

[0001] The present application relates to the technical field of aerospace, and in particular to a dust-proof gas inspection device used in the research and development stage of a test piece. Background Art

[0002] In order to ensure the safety of aircraft flight, the aircraft is usually provided with a pressure sensor, which is used to detect data of flight status in real time.

[0003] In order to facilitate the connection of the pressure sensor as a tested piece with the test equipment, a threaded connecting hole is provided on the pressure sensor. When the pressure sensor needs to be tested, the pipeline of the test equipment is connected to the threaded connecting hole of the pressure sensor.

[0004] However, when the test piece is in the development stage, it is necessary to perform long-term and high-frequency in-situ experimental tests on the test piece through testing equipment, which requires frequent disassembly and assembly of the threaded connecting holes, thereby reducing the life of the threaded connecting holes of the test piece during actual use. Summary of the invention

[0005] In order to prevent the life of the threaded connecting hole of the tested object from being easily damaged during the research and development stage, the present application provides a dust-proof gas inspection device used in the research and development stage of the tested object.

[0006] The present application provides a dust-proof gas inspection device used in the research and development stage of a test piece, which adopts the following technical solution:

[0007] A dust-proof gas inspection device used in the research and development stage of a test piece, comprising:

[0008] Support block;

[0009] A fixing assembly is disposed on the support block and is used to fix the support block on the tested object;

[0010] The nozzle assembly comprises a nozzle part and an adjusting part, wherein the nozzle part comprises a telescopic nozzle pipe, a first connecting hose, a second connecting hose and a connecting pipe;

[0011] in,

[0012] The telescopic nozzle pipe is passed through the support block and is used to communicate with the threaded communication hole of the tested piece. The side walls of the fixed end and the movable end of the telescopic nozzle pipe are hollow inside, and the inside of the side wall of the fixed end of the telescopic nozzle pipe and the inside of the side wall of the movable end are sealed and communicated.

[0013] One end of the first connecting hose is connected to one end of the inner wall of the telescopic nozzle pipe;

[0014] The second connecting hose is sleeved on the first connecting hose, and a ventilation gap is left between the second connecting hose and the first connecting hose. The end of the second connecting hose close to the telescopic nozzle pipe is connected to the outer wall of the telescopic nozzle pipe.

[0015] One end of the connecting pipe is connected to the first connecting hose and the second connecting hose at one end away from the telescopic nozzle pipe through the adjusting part, and the connecting pipe is used to communicate with the testing equipment;

[0016] The adjusting portion is used to adjust the connecting pipe to be connected to the first connecting hose or to be connected between the first connecting hose and the second connecting hose.

[0017] By adopting the above technical scheme, the support block and the test piece can be fixed by the fixing component, and the connecting pipe is connected to the test equipment. The connecting pipe is first adjusted to be connected between the first connecting hose and the second connecting hose by the adjusting part, and the test equipment ventilates between the first connecting hose and the second connecting hose, and the airflow flows to the inside of the side wall of the telescopic nozzle tube. Under the action of air pressure, the telescopic nozzle tube is extended and abuts against the test piece. The connecting pipe is then adjusted to be connected with the first connecting hose by the adjusting part. The telescopic nozzle tube and the first connecting hose are connected to the threaded connecting hole of the test piece and the test equipment, so that the test equipment can test the test piece and keep the inside of the side wall of the telescopic nozzle tube in a pressure-maintaining state. Since the telescopic nozzle tube and the threaded connecting hole are stably connected by air pressure drive, there is no need to use the threaded connecting hole for auxiliary connection, so that the life of the threaded connecting hole of the test piece is not easily damaged during the research and development stage.

[0018] Optionally, a pressure gauge is provided on the outer wall of the telescopic nozzle tube, and the pressure gauge is used to measure the air pressure inside the side wall of the telescopic nozzle tube.

[0019] By adopting the above technical solution, the air pressure value inside the side wall of the telescopic nozzle tube can be accurately detected by a pressure gauge. On the one hand, it is easy to accurately control the sealing state of the telescopic nozzle tube and the test piece after the telescopic nozzle tube is extended, and on the other hand, it is easy to control the extrusion pressure of the telescopic nozzle tube on the test piece.

[0020] Optionally, the adjustment portion includes a first adjustment block and a second adjustment block, the first adjustment block is fixedly connected to one end of the first connecting hose and the second connecting hose away from the telescopic nozzle pipe, the second adjustment block is rotatably connected to a side of the first adjustment block away from the first connecting hose, and the second adjustment block is sealed and fitted with a side of the first adjustment block that is close to each other;

[0021] The first regulating block is provided with a first communicating hole and a second communicating hole, the first communicating hole is communicated with the first communicating hose, the second communicating hole is communicated between the first communicating hose and the second communicating hose, and a line connecting the first communicating hole and the center of the first regulating block and a line connecting the second communicating hole and the center of the first regulating block are arranged at an angle;

[0022] The second adjusting block is provided with a third connecting hole and a fourth connecting hole, the third connecting hole is used to connect with the first connecting hole, the fourth connecting hole is used to connect with the second connecting hole, the line connecting the third connecting hole and the center of the second adjusting block coincides with the line connecting the fourth connecting hole and the center of the second adjusting block, the connecting pipe is fixedly connected to the side of the second adjusting block away from the first adjusting block, and the third connecting hole and the fourth connecting hole are both connected to the connecting pipe.

[0023] By adopting the above technical solution, since the line connecting the first connecting hole and the center of the first adjusting block is set at an angle with the line connecting the second connecting hole and the center of the first adjusting block, and the line connecting the third connecting hole and the center of the second adjusting block coincides with the line connecting the fourth connecting hole and the center of the second adjusting block, the second adjusting block is rotated, when the first connecting hole is connected to the third connecting hole, the second connecting hole and the fourth connecting hole are in a misaligned state, and when the second connecting hole is connected to the fourth connecting hole, the first connecting hole and the third connecting hole are in a misaligned state, thereby facilitating the connection of the connecting pipe to the first connecting hose, or facilitating the connection of the connecting pipe between the first connecting hose and the second connecting hose, and facilitating the pressure maintenance of the side wall of the telescopic nozzle pipe.

[0024] Optionally, a first fixing portion is provided between the first adjusting block and the second adjusting block, and the first fixing portion includes a first fixing block, a first fixing sliding ring, a first fixing ring and a first fixing spring;

[0025] Two groups of first fixed blocks are provided, and correspond to the first communicating hole and the second communicating hole respectively. Each group of first fixed blocks has at least one first fixed block. The first fixed block is fixedly connected to the side wall of the first adjusting block. The first fixed sliding ring is slidably sleeved on the second adjusting block along the rotation axis direction of the second adjusting block. At least one first fixed ring is provided, and corresponds to each group of first fixed blocks one by one. The first fixed ring is fixed on the first fixed sliding ring. The first fixed spring is provided between the first fixed sliding ring and the second adjusting block, and is used to drive the first fixed ring to be sleeved on any group of corresponding first fixed blocks.

[0026] When the first fixing ring is sleeved on the first fixing block corresponding to the first connecting hole, the first connecting hole is connected to the third connecting hole; when the first fixing ring is sleeved on the first fixing block corresponding to the second connecting hole, the second connecting hole is connected to the fourth connecting hole.

[0027] By adopting the above technical solution, under the elastic force of the first fixed spring, the first fixed sliding ring can be sleeved on the first fixed block, and the first adjustment block and the second adjustment block can be fixed by the first fixed block, the first fixed ring and the first fixed sliding ring, so that the first fixed ring is sleeved on the first fixed blocks of different groups, so that the two adjustment states of the first connecting hole and the third connecting hole being connected and the second connecting hole and the fourth connecting hole being connected are easy to fix.

[0028] Optionally, the support block is provided with a dustproof slot adapted to the connecting pipe.

[0029] By adopting the above technical solution, when the test piece stops testing, the connecting tube is inserted into the dustproof slot, which can prevent external dust and debris from entering the connecting tube, thereby easily ensuring the cleanliness of the test pipeline of the test piece, so that when the test piece is in the research and development stage, dust and debris are not easy to enter the test piece.

[0030] Optionally, the connecting tube is connected to a magnetic attraction assembly, which includes a first magnetic ring and a second magnetic ring. The first magnetic ring is fixedly sleeved on one end of the connecting tube close to the second adjustment block, and the second magnetic ring is embedded in a slot of the dustproof slot. When the connecting tube is inserted into the dustproof slot, the first magnetic ring and the second magnetic ring are abutted, and the polarities of the first magnetic ring and the second magnetic ring on the side close to each other are opposite.

[0031] By adopting the above technical solution, when the connecting tube is inserted into the dustproof slot, the first magnetic ring and the second magnetic ring can be attracted to each other, so that the connecting tube is not easy to fall out of the dustproof slot.

[0032] Optionally, the telescopic nozzle pipe is rotatably connected to the support block and is connected to a dustproof assembly, the dustproof assembly includes a dustproof part and a transmission part, both of which are located on a side of the support block away from the second connecting hose, the dustproof part includes a dustproof seat and a dustproof ball, and the transmission part includes a transmission shaft, a bevel gear and a bevel gear ring;

[0033] The dustproof seat is fixed inside the inner wall of the telescopic nozzle tube, the dustproof ball is passed through the dustproof seat and is rotatably connected with the dustproof seat in any direction, and a through vent hole is opened on the dustproof ball along the diameter direction;

[0034] The transmission shaft is rotatably passed through the dustproof seat and the telescopic nozzle pipe, one end of the transmission shaft is fixedly connected to the dustproof ball, the axial direction of the transmission shaft is consistent with the diameter direction of the dustproof ball and is perpendicular to the axial direction of the vent hole, the bevel gear is coaxially fixedly connected to the end of the transmission shaft away from the dustproof ball, the bevel gear is meshed with the bevel gear ring, the bevel gear ring is coaxially sleeved on the telescopic nozzle pipe, and is fixedly connected to the support block.

[0035] By adopting the above technical solution, after the test piece is tested, the telescopic nozzle tube is rotated, and the telescopic nozzle tube drives the transmission shaft and the bevel gear to rotate around the rotation axis of the telescopic nozzle tube, so that the bevel gear rotates relative to the bevel gear ring. Under the drive of the bevel gear ring, the bevel gear can drive the dustproof ball to rotate through the transmission shaft, so that the vent hole on the dustproof ball is opposite to the dustproof seat, so that the telescopic nozzle tube can be closed after the test piece is tested, so as to further prevent dust and debris from entering the test piece during the research and development stage of the test piece.

[0036] Since the telescopic nozzle tube is a telescopic part, when the telescopic nozzle tube is rotated, the abutment between the telescopic nozzle tube and the tested piece does not need to rotate relatively, so that the sealing performance between the telescopic nozzle tube and the threaded connecting hole is not easily affected when the telescopic nozzle tube is rotated.

[0037] Optionally, the dust-proof assembly further comprises a dust-blowing part and a sealing part, the dust-blowing part comprises a dust-blowing air pipe and a sealing rubber sleeve, and the sealing part comprises a sealing ball and a sealing spring;

[0038] The dust blowing air pipe is located inside the side wall of the telescopic nozzle pipe, and the two ends are fixedly penetrated on the inner wall and the outer wall of the telescopic nozzle pipe respectively. The dust blowing air pipe is directly opposite to the support block. The sealing rubber sleeve is arranged between the telescopic nozzle pipe and the support block and is fixedly connected to the support block. The support block is provided with a dust blowing air hole connected with the dustproof slot. The dust blowing air hole passes through the sealing rubber sleeve and is used to be connected with the dust blowing air pipe.

[0039] A sealing groove is provided at the position where the supporting block fits the sealing rubber sleeve, a sealing ball is slidably arranged in the sealing groove, a sealing spring is arranged between the sealing ball and the bottom of the sealing groove, and is used to drive the sealing ball to slide out of the sealing groove, when the sealing ball is facing the dust blowing air pipe, the axis of the vent hole coincides with the axis of the telescopic nozzle pipe.

[0040] By adopting the above technical scheme, when the telescopic nozzle tube is rotated so that the air hole is directly opposite to the dustproof seat, the dust blowing air pipe can be driven to rotate synchronously so that the dust blowing air pipe is directly opposite to the dust blowing air hole. When the testing equipment blows air toward the inner wall of the telescopic nozzle tube, the airflow can be blown into the dustproof slot from the dust blowing air pipe through the dust blowing air hole. Therefore, before the connecting tube is inserted into the dustproof slot, the dustproof slot can be cleaned by the airflow, and the connecting tube, the first connecting hose and the inside of the telescopic nozzle tube can be cleaned before the test piece is tested, thereby improving the dustproof effect of the test piece.

[0041] When the axis of the vent hole coincides with the rotation axis of the telescopic nozzle tube, the dust blowing air pipe rotates away from the dust blowing air hole along with the telescopic nozzle tube and faces the sealing ball. The sealing rubber sleeve seals the dust blowing air pipe. The sealing ball squeezes the sealing rubber sleeve under the drive of the sealing spring to further seal the dust blowing air pipe, so that the dust blowing air pipe is not prone to gas leakage when the test piece is being tested.

[0042] Optionally, the fixing assembly includes a fixing plate, a flexible pad and a fixing bolt. There are two fixing plates, two flexible pads and two fixing bolts, and they are symmetrically arranged at both ends of the support block. The fixing plate is fixedly connected to the support block, and the flexible pad is fixedly connected to the side of the fixing plate away from the second connecting hose. The fixing bolt is rotatably passed through the fixing plate and the flexible pad, and the fixing bolt is used to be threadedly connected to the test piece.

[0043] By adopting the above technical solution, the fixing bolt is connected to the test piece through a thread, and the fixing bolt is tightened to make the flexible pad fit on the test piece to achieve the fixation of the support block and the test piece, so that the support block can be easily and firmly fixed on the test piece.

[0044] Optionally, one end of the telescopic nozzle tube away from the second connecting hose is fixedly connected to a nozzle seat, the nozzle seat is connected to the inside of the inner wall of the telescopic nozzle tube, and a sealing rubber pad is arranged in the nozzle seat.

[0045] By adopting the above technical solution and providing a nozzle seat and a sealing rubber pad, the sealing performance of the connection between the telescopic nozzle pipe and the threaded connecting hole is improved.

[0046] In summary, the present application includes at least one of the following beneficial technical effects:

[0047] 1. By providing a telescopic nozzle pipe, a first connecting hose, a second connecting hose, a first adjusting block, a second adjusting block and a connecting pipe, and opening a first connecting hole and a second connecting hole on the first adjusting block, and opening a third connecting hole and a fourth connecting hole on the second adjusting block, there is no need to use a threaded connecting hole to assist in communication, so that the life of the threaded connecting hole of the tested piece is not easily damaged during the research and development stage;

[0048] 2. By inserting the connecting pipe into the dustproof slot, dust and debris are not easy to enter the connecting pipe;

[0049] 3. By setting the dustproof seat, dustproof ball, transmission shaft, bevel gear and bevel gear ring, the telescopic nozzle can be closed when the test piece stops testing;

[0050] 4. By providing a dust blowing air pipe and opening a dust blowing air hole on the support block, the dustproof slot can be cleaned by blowing air before the connecting pipe is inserted. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0052] Figure 2 is an exploded view of the adjusting portion and the first fixing portion;

[0053] Figure 3 is a cross-sectional view of the dust protection assembly;

[0054] Figure 4 It is a cross-sectional view of the sealing part and the dust blowing hole;

[0055] Figure 5 yes Figure 1 Magnified view at A in the middle.

[0056] Description of reference numerals:

[0057] 1. Support block; 11. Dustproof slot; 12. Dust-blowing air hole; 13. Sealing groove; 2. Fixing assembly; 21. Fixing plate; 22. Flexible pad; 23. Fixing bolt; 3. Nozzle assembly; 31. Nozzle part; 311. Telescopic nozzle tube; 3111. Air pressure gauge; 3112. Nozzle seat; 3113. Sealing rubber pad; 312. First connecting hose; 313. Second connecting hose; 314. Connecting pipe; 32. Adjusting part; 321. First adjusting block; 3211. First connecting hole; 3212. Second connecting hole; 322. Second adjusting block; 3221. Third connecting hole; 3222. Fourth connecting hole; 33. First fixing part; 331. First fixing Block; 332, first fixed slip ring; 333, first fixed ring; 334, first fixed spring; 4, magnetic attraction assembly; 41, first magnetic ring; 42, second magnetic ring; 5, dustproof assembly; 51, dustproof part; 511, dustproof seat; 512, dustproof ball; 5121, vent; 52, transmission part; 521, transmission shaft; 522, bevel gear; 523, bevel gear ring; 53, dust blowing part; 531, dust blowing air pipe; 532, sealing rubber sleeve; 54, sealing part; 541, sealing ball; 542, sealing spring; 55, second fixed part; 551, second fixed block; 552, second fixed slip ring; 553, second fixed ring; 554, second fixed spring. DETAILED DESCRIPTION

[0058] The following is combined with Figure 1-5 This application is described in further detail.

[0059] The present application embodiment discloses a dust-proof gas inspection device used in the research and development stage of a test piece. Figure 1 and Figure 2 A dust-proof gas inspection device used in the research and development stage of a test piece includes a support block 1, a fixing component 2 and a nozzle component 3. The fixing component 2 and the nozzle component 3 are both arranged on the support block 1. The fixing component 2 is used to fix the support block 1 on the test piece. The nozzle component 3 is used to connect the threaded connecting hole of the test equipment and the test piece in a telescopic manner with the help of the air pressure of the test equipment.

[0060] When in use, the fixing component 2 fixes the support block 1 on the test piece, and the nozzle component 3 uses the support block 1 as the force support point. The nozzle component 3 uses the air pressure of the test equipment to connect the test equipment and the threaded connecting hole of the test piece in a telescopic manner, so that the connection between the test equipment and the test piece does not require the assistance of the threaded connecting hole, which makes the life of the threaded connecting hole of the test piece less susceptible to loss during the research and development stage.

[0061] Reference Figure 1The support block 1 is in the shape of a rectangular block. The fixing assembly 2 includes a fixing plate 21, a flexible pad 22 and a fixing bolt 23. Two fixing plates 21, two flexible pads 22 and two fixing bolts 23 are provided, and are symmetrically arranged at both ends of the length direction of the support block 1; the fixing plate 21 is in the shape of a rectangular plate, and one side in the length direction is fixedly connected to the support block 1; the flexible pad 22 is in the shape of a rectangular plate, and is fixedly arranged on the side of the fixing plate 21 facing the test piece; the fixing bolt 23 is rotatably penetrated on the fixing plate 21 and the flexible pad 22, and the fixing bolt 23 is used to be threadedly connected to the test piece.

[0062] Reference Figure 1 and Figure 2 The nozzle assembly 3 includes a nozzle part 31, an adjustment part 32 and a first fixed part 33. The nozzle part 31 includes a telescopic nozzle tube 311, a first connecting hose 312, a second connecting hose 313 and a connecting tube 314. The telescopic nozzle tube 311 is a circular tube. The side walls of the fixed end and the movable end of the telescopic nozzle tube 311 are hollow inside, and the interior of the side wall of the fixed end of the telescopic nozzle tube 311 and the interior of the side wall of the movable end are sealed and connected. The telescopic nozzle tube 311 is rotatably installed on the support block 1, and the movable end of the telescopic nozzle tube 311 is located at one end of itself close to the flexible pad 22.

[0063] Reference Figure 3 The movable end of the telescopic nozzle tube 311 is fixedly connected with a nozzle seat 3112. The nozzle seat 3112 is in the shape of an annular block and is coaxially arranged with the telescopic nozzle tube 311. The interior of the nozzle seat 3112 is connected with the interior of the inner wall of the telescopic nozzle tube 311. A sealing rubber pad 3113 is arranged in the nozzle seat 3112. The sealing rubber pad 3113 is in the shape of an annular ring and is coaxially arranged with the nozzle seat 3112. The side of the sealing rubber pad 3113 away from the telescopic nozzle tube 311 exceeds the nozzle seat 3112. Through the nozzle seat 3112 and the sealing rubber pad 3113, the telescopic nozzle tube 311 can be sealed and connected with the threaded connecting hole of the test piece.

[0064] A pressure gauge 3111 is fixedly connected to the outer wall of the movable end of the telescopic nozzle tube 311 . The pressure gauge 3111 is arranged close to the nozzle seat 3112 and is used to measure the air pressure inside the side wall of the telescopic nozzle tube 311 .

[0065] The first connecting hose 312 and the second connecting hose 313 are both circular tubes. The diameter of the first connecting hose 312 is equal to the diameter of the inner wall of the telescopic nozzle tube 311, and the diameter of the second connecting hose 313 is equal to the diameter of the outer wall of the telescopic nozzle tube 311. The second connecting hose 313 is coaxially sleeved on the first connecting hose 312, and a ventilation distance is left between the second connecting hose 313 and the first connecting hose 312. One end of the first connecting hose 312 is connected to the end of the inner wall of the telescopic nozzle tube 311 away from the nozzle seat 3112, and the end of the second connecting hose 313 close to the telescopic nozzle tube 311 is connected to the end of the outer wall of the telescopic nozzle tube 311 away from the nozzle seat 3112.

[0066] Reference Figure 1 and Figure 2 The adjusting portion 32 includes a first adjusting block 321 and a second adjusting block 322, both of which are circular blocks. The first adjusting block 321 is arranged at one end of the first connecting hose 312 and the second connecting hose 313 away from the telescopic nozzle tube 311, the first adjusting block 321 is fixedly connected to the first connecting hose 312 and the second connecting hose 313, the first adjusting block 321 is coaxially arranged with the first connecting hose 312, the second adjusting block 322 is rotatably connected to a side of the first adjusting block 321 away from the first connecting hose 312, the second adjusting block 322 is coaxially arranged with the first adjusting block 321, and the second adjusting block 322 and the first adjusting block 321 are sealed and fitted on a side close to each other.

[0067] Reference Figure 2 The first adjusting block 321 is provided with a first connecting hole 3211 and a second connecting hole 3212, both of which are circular, and their axial directions are parallel to the axial direction of the first adjusting block 321, and two first connecting holes 3211 and second connecting holes 3212 are symmetrically provided, the first connecting hole 3211 is connected to the first connecting hose 312, and the second connecting hole 3212 is connected between the first connecting hose 312 and the second connecting hose 313, and the line connecting the center of the first connecting hole 3211 and the center of the first adjusting block 321 is perpendicular to the line connecting the center of the second connecting hole 3212 and the center of the first adjusting block 321.

[0068] The second adjusting block 322 is provided with a third connecting hole 3221 and a fourth connecting hole 3222, both of which are circular, and their axial directions are parallel to the axial direction of the second adjusting block 322, the diameter of the third connecting hole 3221 is equal to the diameter of the first connecting hole 3211, the diameter of the fourth connecting hole 3222 is equal to the diameter of the second connecting hole 3212, and two of the third connecting hole 3221 and the fourth connecting hole 3222 are symmetrically provided, the third connecting hole 3221 is used to communicate with the first connecting hole 3211, the fourth connecting hole 3222 is used to communicate with the second connecting hole 3212, and the line connecting the center of the third connecting hole 3221 and the center of the second adjusting block 322 coincides with the line connecting the center of the fourth connecting hole 3222 and the center of the second adjusting block 322.

[0069] The connecting tube 314 is in a circular tubular shape and is fixedly connected to the side of the second adjusting block 322 away from the first adjusting block 321. The connecting tube 314 is coaxially arranged with the second adjusting block 322. The third connecting hole 3221 and the fourth connecting hole 3222 are both connected to the connecting tube 314. The connecting tube 314 is used to connect with the testing equipment.

[0070] The first fixing portion 33 is arranged between the first adjusting block 321 and the second adjusting block 322. The first fixing portion 33 includes a first fixing block 331, a first fixing sliding ring 332, a first fixing ring 333 and a first fixing spring 334. Two groups of first fixing blocks 331 are arranged, and correspond to the first connecting hole 3211 and the second connecting hole 3212 respectively. The number of each group of first fixing blocks 331 is two. The two first fixing blocks 331 are symmetrically fixed to the side wall of the first adjusting block 321. The first fixing block 331 is in a rectangular block shape, and the connecting line of the two groups of first fixing blocks 331 is vertically arranged.

[0071] The first fixed slip ring 332 is in the shape of a circular ring and is slidably mounted on the second adjustment block 322 along the axial direction of the second adjustment block 322. Two first fixed rings 333 are provided, and correspond one to one with each group of first fixed blocks 331. The first fixed ring 333 is in the shape of a rectangular ring and is fixed on the side wall of the first fixed slip ring 332. The first fixed spring 334 is fixed between the first fixed slip ring 332 and the second adjustment block 322, and is used to drive the first fixed ring 333 to be mounted on any group of corresponding first fixed blocks 331.

[0072] When the first fixing ring 333 is sleeved on the first fixing block 331 corresponding to the first connecting hole 3211, the first connecting hole 3211 is connected to the third connecting hole 3221; when the first fixing ring 333 is sleeved on the first fixing block 331 corresponding to the second connecting hole 3212, the second connecting hole 3212 is connected to the fourth connecting hole 3222.

[0073] When in use, screw the fixing bolt 23 so that the fixing bolt 23 is threadedly connected to the test piece, and the fixing bolt 23 fixes the fixing plate 21 and the flexible pad 22 on the test piece, and the flexible pad 22 fits on the test piece, and slides the first fixing ring 332 so that the first fixing ring 333 is disengaged from the first fixing block 331 to release the fixation of the first adjustment block 321 and the second adjustment block 322, and rotates the second adjustment block 322 to connect the second connecting hole 3212 with the fourth connecting hole 3222, and loosens the first fixing ring 332. Under the elastic force of the first fixing spring 334, the first fixing ring 333 is sleeved on the first fixing block 331 corresponding to the second connecting hole 3212 to fix the first adjustment block 321 and the second adjustment block 322.

[0074] The connecting tube 314 is connected to the testing equipment, and the testing equipment provides airflow to the connecting tube 314. The airflow flows into the inside of the side wall of the telescopic nozzle tube 311 from the fourth connecting hole 3222, the second connecting hole 3212, and between the first connecting hose 312 and the second connecting hose 313. The airflow drives the telescopic nozzle tube 311 to extend, and the telescopic nozzle tube 311 drives the nozzle seat 3112 and the sealing pad 3113 to press against the test piece, so that the threaded connecting hole of the test piece is sealed and connected with the telescopic nozzle tube 311.

[0075] The air pressure inside the side wall of the telescopic nozzle pipe 311 is detected by the pressure gauge 3111 to ensure the tightness of the connection between the telescopic nozzle pipe 311 and the threaded connecting hole. When the air pressure value detected by the pressure gauge 3111 reaches a preset value, the first fixed sliding ring 332 is slid to release the fixation of the first adjustment block 321 and the second adjustment block 322, and the second adjustment block 322 is rotated to connect the first connecting hole 3211 with the third connecting hole 3221, and the second connecting hole 3212 is closed, so that the pressure inside the side wall of the telescopic nozzle pipe 311 is maintained, and the connecting pipe 311 is connected to the threaded connecting hole 3221. 4 is connected with the first connecting hose 312, the first fixing slip ring 332 is loosened to fix the first adjusting block 321 and the second adjusting block 322, and the airflow provided by the testing equipment to the connecting pipe 314 flows into the inner wall of the telescopic nozzle pipe 311 from the third connecting hole 3221, the first connecting hole 3211 and the first connecting hose 312, so as to provide an air source to the threaded connecting hole of the tested piece, so that the tested piece can be tested, thereby eliminating the need for auxiliary communication with the threaded connecting hole, and making the life of the threaded connecting hole of the tested piece less susceptible to loss during the research and development stage.

[0076] Reference Figure 1 A dustproof slot 11 adapted to the connecting pipe 314 is provided on one side of the supporting block 1 in the length direction, and the axial direction of the dustproof slot 11 is perpendicular to the axial direction of the telescopic nozzle pipe 311 .

[0077] Reference Figure 1 and Figure 2The connecting tube 314 is connected to a magnetic attraction component 4, and the magnetic attraction component 4 includes a first magnetic ring 41 and a second magnetic ring 42. The first magnetic ring 41 and the second magnetic ring 42 are both circular rings. The first magnetic ring 41 is fixedly fitted on one end of the connecting tube 314 close to the second adjustment block 322, and the second magnetic ring 42 is embedded in the notch position of the dustproof slot 11. The inner diameter of the second magnetic ring 42 is equal to the diameter of the dustproof slot 11. When the connecting tube 314 is inserted into the dustproof slot 11, the first magnetic ring 41 and the second magnetic ring 42 are abutted, and the polarities of the first magnetic ring 41 and the second magnetic ring 42 on the side close to each other are opposite.

[0078] Reference Figure 3 and Figure 4 The telescopic nozzle tube 311 is connected to a dustproof assembly 5, which includes a dustproof part 51, a transmission part 52, a dust blowing part 53, a sealing part 54 and a second fixing part 55. The dustproof part 51 and the transmission part 52 are both located on the side of the support block 1 away from the second connecting hose 313. The dustproof part 51 includes a dustproof seat 511 and a dustproof ball 512. The transmission part 52 includes a transmission shaft 521, a bevel gear 522 and a bevel gear ring 523.

[0079] Reference Figure 3 The dustproof seat 511 is in a circular tubular shape and is coaxially fixed inside the inner wall of the telescopic nozzle tube 311. The dustproof ball 512 is in a spherical shape and is penetrated on the dustproof seat 511. The dustproof ball 512 is rotatably connected with the dustproof seat 511 in any direction. A through vent hole 5121 is opened on the dustproof ball 512 in the diameter direction, and the vent hole 5121 is circular.

[0080] The transmission shaft 521 is rotatably installed on the dustproof seat 511 and the telescopic nozzle tube 311, and one end of the transmission shaft 521 is fixedly connected to the dustproof ball 512. The axial direction of the transmission shaft 521 is consistent with the diameter direction of the dustproof ball 512 and is perpendicular to the axial direction of the vent hole 5121. The bevel gear 522 is coaxially fixedly connected to the end of the transmission shaft 521 away from the dustproof ball 512. The bevel gear ring 523 is meshed with the bevel gear 522, and the bevel gear ring 523 is sleeved on the telescopic nozzle tube 311 and fixedly connected to the support block 1.

[0081] Reference Figure 4 The dust blowing part 53 includes a dust blowing air pipe 531 and a sealing rubber sleeve 532. The dust blowing air pipe 531 is in a circular tubular shape and is located inside the side wall of the telescopic nozzle pipe 311. The two ends of the dust blowing air pipe 531 in the axial direction are respectively fixedly penetrated on the inner wall and outer wall of the telescopic nozzle pipe 311. The dust blowing air pipe 531 is opposite to the support block 1 and is connected to the inside of the inner wall of the telescopic nozzle pipe 311. The axial direction of the dust blowing air pipe 531 is perpendicular to the axial direction of the telescopic nozzle pipe 311.

[0082] The sealing rubber sleeve 532 is in a circular cylindrical shape and is disposed between the telescopic nozzle tube 311 and the support block 1. The sealing rubber sleeve 532 is fixedly connected to the support block 1 and is coaxially sleeved on the telescopic nozzle tube 311. The sealing rubber sleeve 532 is in close contact with the telescopic nozzle tube 311. The support block 1 is provided with a dust blowing hole 12. The dust blowing hole 12 is circular. One end of the dust blowing hole 12 is connected to the dustproof slot 11, and the other end passes through the sealing rubber sleeve 532. The dust blowing hole 12 is used to communicate with the dust blowing air pipe 531.

[0083] The support block 1 is provided with a sealing groove 13 at the part where the sealing rubber sleeve 532 is fitted. The sealing groove 13 is circular, and the axial direction of the sealing groove 13 is perpendicular to the axial direction of the dust blowing air hole 12 and is located in the same plane. The sealing portion 54 includes a sealing ball 541 and a sealing spring 542. The sealing ball 541 is spherical, and its diameter is equal to the diameter of the sealing groove 13. The sealing ball 541 is slidably arranged in the sealing groove 13. The sealing spring 542 is fixed between the sealing ball 541 and the bottom of the sealing groove 13 and is used to drive the sealing ball 541 to slide out of the sealing groove 13. When the sealing ball 541 is facing the dust blowing air pipe 531, the axis of the vent hole 5121 coincides with the axis of the telescopic nozzle pipe 311.

[0084] Reference Figure 1 and Figure 5 The second fixing portion 55 is disposed between the side of the support block 1 away from the bevel gear 522 and the telescopic nozzle tube 311 , and the second fixing portion 55 includes a second fixing block 551 , a second fixing sliding ring 552 , a second fixing ring 553 and a second fixing spring 554 .

[0085] Reference Figure 4 and Figure 5 The second fixed block 551 is in a rectangular block shape, and two of them are provided. The two second fixed blocks 551 are both fixedly connected to the support block 1 and correspond to the sealing groove 13 and the dust blowing hole 12 respectively.

[0086] Reference Figure 5 The second fixed slip ring 552 is circular and is slidably mounted on the telescopic nozzle tube 311 along the axial direction of the telescopic nozzle tube 311. The second fixed ring 553 is rectangular and fixed on the side wall of the second fixed slip ring 552. The second fixed spring 554 is fixed between the second fixed slip ring 552 and the telescopic nozzle tube 311 and is used to drive the second fixed ring 553 to be mounted on any one of the second fixed blocks 551.

[0087] Reference Figure 4 and Figure 5When the second fixing ring 553 is sleeved on the second fixing block 551 corresponding to the sealing groove 13, the axis of the vent hole 5121 coincides with the axis of the telescopic nozzle pipe 311; when the second fixing ring 553 is sleeved on the second fixing block 551 corresponding to the dust blowing hole 12, the axis of the vent hole 5121 is perpendicular to the axis of the telescopic nozzle pipe 311.

[0088] When in use, when the tested piece is tested, the sealing ball 541 is squeezed on the dust blowing air pipe 531 under the elastic force of the sealing spring 542 to improve the sealing performance of the dust blowing air pipe 531; when the tested piece stops testing, the second fixed sliding ring 552 is slid to make the second fixed ring 553 escape from the second fixed block 551 corresponding to the sealing groove 13, and the fixing of the telescopic nozzle pipe 311 and the support block 1 is released, and the telescopic nozzle pipe 311 is rotated to make the dust blowing air pipe 531 communicate with the dust blowing air hole 12, and the telescopic nozzle pipe 311 drives the bevel gear 522 to rotate, and the bevel gear 522 drives the dust ball 51 through the transmission shaft 521. 2 is rotated so that the vent hole 5121 is aligned with the dust seat 511 to close the telescopic nozzle tube 311, and the first connecting hose 312 is connected with the dust slot 11, and the air flow in the first connecting hose 312 is blown into the dust slot 11 through the telescopic nozzle tube 311, the dust blowing air pipe 531 and the dust blowing air hole 12, and the air flow is blown out from the dust slot 11 to clean the dust slot 11, and the connecting pipe 314 is inserted into the dust slot 11, and the first magnetic ring 41 and the second magnetic ring 42 are connected by magnetic attraction, so that the connecting pipe 314 is not easy to fall out of the dust slot 11, and dust and debris are not easy to enter the connecting pipe 314.

[0089] The implementation principle of a dust-proof gas inspection device used in the research and development stage of a test piece in an embodiment of the present application is as follows: when in use, the fixing bolt 23 is threadedly connected to the test piece, the fixing bolt 23 fixes the support block 1 on the test piece, and the second adjustment block 322 is rotated to make the connecting pipe 314 connected between the first connecting hose 312 and the second connecting hose 313, and the connecting pipe 314 is connected to the test equipment. The test equipment provides airflow, and the airflow flows from between the first connecting hose 312 and the second connecting hose 313 into the inside of the side wall of the telescopic nozzle tube 311, so that the telescopic nozzle tube 311 extends out and is connected to the threaded connecting hole of the test piece, and then the second adjustment block 322 is rotated to make the connecting pipe 314 connected to the first connecting hose 312, so that the test equipment provides an air source to the test piece, thereby eliminating the need for auxiliary communication with the aid of the threaded connecting hole, so that the life of the threaded connecting hole of the test piece is not easily damaged during the research and development stage.

[0090] When the test piece stops testing, the telescopic nozzle tube 311 is rotated to connect the dust blowing air pipe 531 with the dust blowing air hole 12. The telescopic nozzle tube 311 drives the dustproof ball 512 to rotate so that the vent hole 5121 is opposite to the dustproof seat 511. The air flow flows from the dust blowing air pipe 531 and the dust blowing air hole 12 into the dustproof slot 11 to clean the dustproof slot 11. The connecting tube 314 is inserted into the dustproof slot 11 to prevent dust and debris from entering the connecting tube 314.

[0091] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dust-proof gas inspection device used in the research and development stage of a test piece, characterized in that: include: Support block (1); A fixing assembly (2) is arranged on the support block (1) and is used to fix the support block (1) on the test piece; The nozzle assembly (3) comprises a nozzle part (31) and an adjusting part (32), wherein the nozzle part (31) comprises a telescopic nozzle pipe (311), a first connecting hose (312), a second connecting hose (313) and a connecting pipe (314); in, The telescopic nozzle tube (311) is inserted into the support block (1) and is used to communicate with the threaded communication hole of the tested object. The side walls of the fixed end and the movable end of the telescopic nozzle tube (311) are hollow inside, and the inside of the side wall of the fixed end of the telescopic nozzle tube (311) and the inside of the side wall of the movable end are sealed and communicated. One end of the first connecting hose (312) is connected to one end of the inner wall of the telescopic nozzle tube (311); The second connecting hose (313) is sleeved on the first connecting hose (312) and a ventilation gap is left between the second connecting hose (313) and the first connecting hose (312). The end of the second connecting hose (313) close to the telescopic nozzle pipe (311) is connected to the outer wall of the telescopic nozzle pipe (311). One end of the connecting pipe (314) is connected to the first connecting hose (312) and one end of the second connecting hose (313) away from the telescopic nozzle pipe (311) through the adjusting portion (32), and the connecting pipe (314) is used to communicate with the testing equipment; The adjusting portion (32) is used to adjust the connection pipe (314) to be connected to the first connecting hose (312) or to be connected between the first connecting hose (312) and the second connecting hose (313); The adjusting portion (32) comprises a first adjusting block (321) and a second adjusting block (322); the first adjusting block (321) is fixedly connected to one end of the first connecting hose (312) and the second connecting hose (313) away from the telescopic nozzle tube (311); the second adjusting block (322) is rotatably connected to a side of the first adjusting block (321) away from the first connecting hose (312); and the second adjusting block (322) and the first adjusting block (321) are arranged in a sealing manner on a side close to each other; The first adjusting block (321) is provided with a first communicating hole (3211) and a second communicating hole (3212) which are connected to each other. The first communicating hole (3211) is connected to the first communicating hose (312). The second communicating hole (3212) is connected between the first communicating hose (312) and the second communicating hose (313). A line connecting the first communicating hole (3211) and the center of the first adjusting block (321) and a line connecting the second communicating hole (3212) and the center of the first adjusting block (321) are arranged at an angle. The second adjusting block (322) is provided with a third communicating hole (3221) and a fourth communicating hole (3222) which are connected to each other. The third communicating hole (3221) is used to communicate with the first communicating hole (3211), and the fourth communicating hole (3222) is used to communicate with the second communicating hole (3212). The line connecting the third communicating hole (3221) and the center of the second adjusting block (322) coincides with the line connecting the fourth communicating hole (3222) and the center of the second adjusting block (322). The connecting pipe (314) is fixedly connected to a side of the second adjusting block (322) away from the first adjusting block (321), and the third communicating hole (3221) and the fourth communicating hole (3222) are both connected to the connecting pipe (314). A first fixing portion (33) is provided between the first adjusting block (321) and the second adjusting block (322), and the first fixing portion (33) comprises a first fixing block (331), a first fixing sliding ring (332), a first fixing ring (333) and a first fixing spring (334); Two groups of first fixed blocks (331) are provided, and correspond to the first connecting hole (3211) and the second connecting hole (3212) respectively. Each group of first fixed blocks (331) has at least one first fixed block. The first fixed block (331) is fixedly connected to the side wall of the first adjusting block (321). The first fixed sliding ring (332) is slidably sleeved on the second adjusting block (322) along the rotation axis direction of the second adjusting block (322). At least one first fixed ring (333) is provided, and corresponds to each group of first fixed blocks (331). The first fixed ring (333) is fixedly provided on the first fixed sliding ring (332). The first fixed spring (334) is provided between the first fixed sliding ring (332) and the second adjusting block (322), and is used to drive the first fixed ring (333) to be sleeved on any group of corresponding first fixed blocks (331). When the first fixing ring (333) is sleeved on the first fixing block (331) of a group corresponding to the first connecting hole (3211), the first connecting hole (3211) is connected to the third connecting hole (3221); when the first fixing ring (333) is sleeved on the first fixing block (331) of a group corresponding to the second connecting hole (3212), the second connecting hole (3212) is connected to the fourth connecting hole (3222); One end of the telescopic nozzle tube (311) away from the second connecting hose (313) is fixedly connected to a nozzle seat (3112), the nozzle seat (3112) is connected to the inside of the inner wall of the telescopic nozzle tube (311), and a sealing rubber pad (3113) is arranged in the nozzle seat (3112).

2. A dust-proof gas inspection device used in the development stage of a test piece according to claim 1, characterized in that: A pressure gauge (3111) is arranged on the outer wall of the telescopic nozzle tube (311), and the pressure gauge (3111) is used to measure the air pressure inside the side wall of the telescopic nozzle tube (311).

3. The dust-proof gas inspection device used in the development stage of the test piece according to claim 1, characterized in that: The support block (1) is provided with a dustproof slot (11) adapted to the connecting pipe (314).

4. The dust-proof gas inspection device used in the R&D stage of the tested object according to claim 3, characterized in that: The connecting tube (314) is connected to a magnetic attraction component (4), and the magnetic attraction component (4) comprises a first magnetic ring (41) and a second magnetic ring (42). The first magnetic ring (41) is fixedly sleeved on one end of the connecting tube (314) close to the second adjustment block (322), and the second magnetic ring (42) is embedded in a notch position of the dustproof slot (11). When the connecting tube (314) is inserted into the dustproof slot (11), the first magnetic ring (41) and the second magnetic ring (42) are in contact with each other, and the polarities of the first magnetic ring (41) and the second magnetic ring (42) on the side close to each other are opposite.

5. The dust-proof gas inspection device used in the R&D stage of the tested object according to claim 3, characterized in that: The telescopic nozzle tube (311) is rotatably connected to the support block (1) and is connected to a dustproof assembly (5), the dustproof assembly (5) comprising a dustproof part (51) and a transmission part (52), the dustproof part (51) and the transmission part (52) are both located on a side of the support block (1) away from the second connecting hose (313), the dustproof part (51) comprises a dustproof seat (511) and a dustproof ball (512), and the transmission part (52) comprises a transmission shaft (521), a bevel gear (522) and a bevel gear ring (523); The dustproof seat (511) is fixedly arranged inside the inner wall of the telescopic nozzle tube (311), the dustproof ball (512) is passed through the dustproof seat (511) and is rotatably connected to the dustproof seat (511) in any direction, and a through vent hole (5121) is opened on the dustproof ball (512) along the diameter direction; The transmission shaft (521) is rotatably inserted into the dustproof seat (511) and the telescopic nozzle tube (311). One end of the transmission shaft (521) is fixedly connected to the dustproof ball (512). The axial direction of the transmission shaft (521) is consistent with the diameter direction of the dustproof ball (512) and is perpendicular to the axial direction of the vent hole (5121). The bevel gear (522) is coaxially fixedly connected to one end of the transmission shaft (521) away from the dustproof ball (512). The bevel gear (522) is meshed with a bevel gear ring (523). The bevel gear ring (523) is coaxially sleeved on the telescopic nozzle tube (311) and fixedly connected to the support block (1).

6. The dust-proof gas inspection device used in the research and development stage of the tested object according to claim 5, characterized in that: The dust-proof component (5) further comprises a dust-blowing part (53) and a sealing part (54); the dust-blowing part (53) comprises a dust-blowing air pipe (531) and a sealing rubber sleeve (532); and the sealing part (54) comprises a sealing ball (541) and a sealing spring (542); The dust blowing air pipe (531) is located inside the side wall of the telescopic nozzle pipe (311), and the two ends are fixedly arranged on the inner wall and the outer wall of the telescopic nozzle pipe (311), respectively. The dust blowing air pipe (531) is directly opposite to the support block (1). The sealing rubber sleeve (532) is arranged between the telescopic nozzle pipe (311) and the support block (1), and is fixedly connected to the support block (1). The support block (1) is provided with a dust blowing air hole (12) which is connected to the dustproof slot (11). The dust blowing air hole (12) passes through the sealing rubber sleeve (532) and is used to be connected to the dust blowing air pipe (531). A sealing groove (13) is provided at a portion of the support block (1) that is in contact with the sealing rubber sleeve (532). A sealing ball (541) is slidably disposed in the sealing groove (13). A sealing spring (542) is disposed between the sealing ball (541) and the bottom of the sealing groove (13) and is used to drive the sealing ball (541) to slide out of the sealing groove (13). When the sealing ball (541) is directly opposite to the dust blowing air pipe (531), the axis of the vent hole (5121) coincides with the axis of the telescopic nozzle pipe (311).

7. The dust-proof gas inspection device used in the R&D stage of the tested object according to claim 1, characterized in that: The fixing assembly (2) comprises a fixing plate (21), a flexible pad (22) and a fixing bolt (23); the fixing plate (21), the flexible pad (22) and the fixing bolt (23) are each provided with two, and are symmetrically arranged at both ends of the support block (1); the fixing plate (21) is fixedly connected to the support block (1); the flexible pad (22) is fixedly connected to a side of the fixing plate (21) away from the second connecting hose (313); the fixing bolt (23) is rotatably inserted into the fixing plate (21) and the flexible pad (22); and the fixing bolt (23) is used for being threadedly connected to the test piece.

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