CN113237615A - Air tightness testing device for tubular medical instrument - Google Patents
Air tightness testing device for tubular medical instrument Download PDFInfo
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- CN113237615A CN113237615A CN202110481392.8A CN202110481392A CN113237615A CN 113237615 A CN113237615 A CN 113237615A CN 202110481392 A CN202110481392 A CN 202110481392A CN 113237615 A CN113237615 A CN 113237615A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2846—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for tubes
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a tubular medical instrument air tightness testing device which comprises a box body, a clamping assembly and a testing assembly, wherein the clamping assembly comprises a motor, a screw rod and a rectangular fixed plate; the air tightness testing device for the tubular medical instrument clamps and fixes the to-be-tested pipe body through the clamping assembly, then conducts air tightness testing on the to-be-tested pipe body through the testing assembly, and simultaneously directly displays a tested structure through the control box, so that the air tightness testing device is clear and intuitive, the testing efficiency is effectively improved, and the dryness of the to-be-tested pipe body is ensured.
Description
Technical Field
The invention relates to the technical field of air tightness test of medical instruments, in particular to an air tightness test device for a tubular medical instrument.
Background
The airtight tubular medical instrument has the requirement on air tightness, if the air tightness is insufficient, the using effect can be influenced, the air tightness of the airtight tubular medical instrument is generally required to be detected firstly, the existing pipeline air tightness testing device needs to use a water tank, air is filled from one end of a tube body and the tail end of the tube body is blocked, the tube body is in an inflation pressure maintaining state, the tube body is immersed in water, and the air tightness is judged in a bubble observation mode.
Disclosure of Invention
The invention aims to provide a device for testing the air tightness of a tubular medical instrument, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a gas tightness testing device for tubular medical instruments comprises a box body, a clamping assembly and a testing assembly, wherein the clamping assembly comprises a motor, a screw rod and a rectangular fixing plate, the motor is fixedly installed at the top of the box body, one end of the screw rod is fixedly connected with a rotating shaft of the motor through a coupler, the other end of the screw rod is rotatably installed on one side of the rectangular fixing plate through a ball bearing, the rectangular fixing plate is fixedly installed at the top of the box body, and a first rectangular moving plate and a second rectangular moving plate are installed on the screw rod in a threaded mode;
the testing assembly comprises an air pump, the air pump is fixedly arranged in the box body, an air inlet of the air pump is communicated with an air inlet hard tube, the end part of the air inlet hard tube penetrates through the box body and extends outwards, an air outlet of the air pump is communicated with an air outlet hard tube, one side of the air outlet hard tube is communicated with a first air guide branch tube, a first electromagnetic valve is fixedly arranged on the first air guide branch tube, the end part of the first air guide branch tube is communicated with a first air guide hose, a sealing air bag is fixedly arranged at the end part of the first air guide hose, the other side of the air outlet hard tube is communicated with a second air guide branch tube, the middle part of the second air guide branch tube is communicated with an air guide hard tube, a second electromagnetic valve is fixedly arranged on the air guide hard tube, the end part of the air guide hard tube is communicated with a second air guide hose, and the end part of the second air guide hose is communicated with an air-charging sealing ring, the pneumatic sealing device is characterized in that a third electromagnetic valve and a pressure sensor are fixedly mounted on the second air guide branch pipe, the third electromagnetic valve is arranged between the air guide hard pipe and the pressure sensor, the pressure sensor is arranged between the third electromagnetic valve and the second air guide hose, the end portion of the second air guide branch pipe is communicated with a third air guide hose, and the end portion of the third air guide hose is connected with the inner wall of the pneumatic sealing ring in a sealing mode through a limiting hole.
By adopting the technical scheme, two ends of a tube body to be tested are respectively placed into the limiting grooves on the first rectangular moving plate and the second rectangular moving plate, the tube body to be tested is clamped and fixed by the clamping component, the lead screw is driven to rotate by the motor, so that the first rectangular moving plate and the second rectangular moving plate move relatively close to or far away from each other to clamp the tube body to be tested, the tube body to be tested is suitable for tube bodies with different lengths, the test tube body to be tested is subjected to airtightness test by the testing component, the sealing air bag and the inflatable sealing ring are respectively placed into the two ends of the tube body to be tested, the first electromagnetic valve and the second electromagnetic valve are opened by operating the operating button on the control box, the sealing air bag is inflated by the first air guide branch pipe and the first air guide hose, and the inflatable sealing ring is inflated by the second air guide branch pipe, the air guide hard pipe and the second air guide hose, make sealed gasbag and inflatable seal circle inflation support the inner wall of tight examination body of awaiting measuring, the both ends of the body of awaiting measuring will be sealed, then close first solenoid valve and second solenoid valve, open the third solenoid valve, aerify to the body portion of awaiting measuring through second air guide branch pipe and third air guide hose, close the third solenoid valve after reaching predetermined numerical value, then pass through pressure sensor to the inside PLC controller transmission of control box and await measuring the inside pressure value change of body, the PLC controller will compare the result that obtains when showing on the display screen, will control first pilot lamp or second pilot lamp scintillation according to the result, if qualified will control first pilot lamp scintillation, if unqualified will control the second pilot lamp scintillation, it is clear directly perceived.
Preferably, the gas tightness testing device for the tubular medical instrument further comprises a fixing assembly, the fixing assembly comprises a portal frame, an electric cylinder is fixedly mounted at the top of the portal frame, a pressing plate is fixedly mounted at the end part of an electric cylinder telescopic rod, strip-shaped inserting blocks are fixedly mounted on two side walls of the pressing plate close to the portal frame, strip-shaped sliding grooves for the strip-shaped inserting blocks to slide are formed in the inner side walls of two opposite sides of the portal frame, and the strip-shaped inserting blocks are slidably mounted in the strip-shaped sliding grooves.
Through adopting above-mentioned technical scheme, be convenient for strengthen the fixed to the body that awaits measuring through the fixed subassembly that sets up, through mutually supporting of bar spout and bar inserted block simultaneously, improve the stability of clamp plate at reciprocating the in-process.
Preferably, an arc-shaped notch is formed in the middle of one side, far away from the electric cylinder, of the pressing plate, and an anti-skid bump is fixedly mounted inside the arc-shaped notch.
Through adopting above-mentioned technical scheme, strengthen the fixed action to the body of awaiting measuring through arc breach and anti-skidding arch.
Preferably, the tubular medical instrument airtightness testing device further comprises a control box, a PLC controller is fixedly mounted inside the control box, an operation button, a display screen, a first indicator lamp and a second indicator lamp are fixedly mounted on the control box, a signal output end of the PLC controller is electrically connected with an electric control end of the motor, an electric control end of the first electromagnetic valve, an electric control end of the second electromagnetic valve, an electric control end of the third electromagnetic valve, an electric control end of the display screen, an electric control end of the first indicator lamp and an electric control end of the second indicator lamp, respectively, and a signal input end of the PLC controller is electrically connected with the operation button and the pressure sensor, respectively.
Through adopting above-mentioned technical scheme, be convenient for through operating button control motor, first solenoid valve, second solenoid valve, third solenoid valve, display screen, first pilot lamp and second pilot lamp on the control box, show the test result on the display screen to whether the gas tightness of the body of awaiting measuring is known qualified, clear directly perceived through first pilot lamp and second pilot lamp.
Preferably, one end of the screw rod is provided with left-handed threads, the other end of the screw rod is provided with right-handed threads, a first through hole is formed in the first rectangular moving plate, first internal threads matched with the left-handed threads are formed in the first through hole, a second through hole is formed in the second rectangular moving plate, second internal threads matched with the right-handed threads are formed in the second through hole, and the first rectangular moving plate and the second rectangular moving plate are arranged oppositely.
By adopting the technical scheme, the first rectangular moving plate and the second rectangular moving plate are convenient to move relatively close to or far away from each other, the device is suitable for the pipe bodies with different lengths, and the applicability of the air tightness testing device for the tubular medical instrument is improved.
Preferably, the bottoms of the first rectangular moving plate and the second rectangular moving plate are fixedly provided with T-shaped inserting blocks, the top of the box body is provided with T-shaped sliding grooves for the T-shaped inserting blocks to slide, and the T-shaped inserting blocks are slidably arranged in the T-shaped sliding grooves.
Through adopting above-mentioned technical scheme, through mutually supporting of T shape spout and T shape inserted block, improve the stability of first rectangle movable plate and second rectangle movable plate in the relative movement in-process.
Preferably, a strip-shaped groove is formed in the top of the side face, close to the first rectangular moving plate and the second rectangular moving plate relatively, of the first rectangular moving plate, a limiting groove is communicated with the end portion of the strip-shaped groove, limiting holes are formed in the first rectangular moving plate and the second rectangular moving plate respectively, the end portions of the first air guide hose and the second air guide hose are connected in a clamping mode in the strip-shaped groove, and the sealing air bag and the inflatable sealing ring are arranged in the limiting groove.
Through adopting above-mentioned technical scheme, through the effect of spacing groove, prevent that air-tight bag and inflatable seal circle from driving the body of awaiting measuring and shifting after aerifing the inflation, influence the accuracy of test.
Preferably, the top of first rectangle movable plate with the equal fixed mounting of second rectangle movable plate has the clamp, first air guide hose with the equal joint of second air guide hose is in the clamp.
Through adopting above-mentioned technical scheme, through the effect of clamp, played spacing fixed action to first air guide hose and second air guide hose, prevented to take place to shift winding phenomenon.
Preferably, one side of the box body is hinged with a door body through a hinge, and a handle is fixedly mounted on the door body.
Through adopting above-mentioned technical scheme, through door body and the handle that sets up, be convenient for maintain the air pump of box inside and overhaul.
Preferably, the motor is sleeved with a dustproof housing, and the dustproof housing is provided with heat dissipation holes.
Through adopting above-mentioned technical scheme, can prevent motor deposition through dustproof housing, make the inside heat of dustproof housing can in time distribute through the louvre simultaneously, prolong the life of motor.
Compared with the prior art, the invention has the beneficial effects that: the air tightness testing device for the tubular medical instrument clamps and fixes the to-be-tested pipe body through the clamping assembly, then conducts air tightness testing on the to-be-tested pipe body through the testing assembly, and meanwhile directly displays the tested structure through the control box, so that the air tightness testing device is clear and intuitive, effectively improves testing efficiency, ensures dryness of the to-be-tested pipe body, and does not need to re-dry the pipe body.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention to its proper form. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic structural view of an unreinforced component of the airtightness testing apparatus for tubular medical devices according to the present invention;
FIG. 2 is a schematic structural view of a reinforced assembly of the air tightness testing device for tubular medical devices according to the present invention;
FIG. 3 is a schematic structural view of another view of the reinforced assembly of the air tightness testing device for tubular medical devices according to the present invention;
FIG. 4 is a schematic cross-sectional view of a box body of the air tightness testing device for tubular medical instruments in the present invention;
FIG. 5 is a schematic view of a partial structure of a testing assembly in the air tightness testing device for tubular medical devices according to the present invention;
FIG. 6 is a schematic structural diagram of a pressure plate of the air tightness testing device for tubular medical devices according to the present invention;
FIG. 7 is a schematic view of a partial structure of a clamping assembly in the air tightness testing device for tubular medical devices according to the present invention;
fig. 8 is an enlarged view of the structure of the portion a in fig. 1.
Reference numbers in the figures: 1-box body, 101-T-shaped sliding groove, 2-motor, 201-dustproof cover shell, 2011-heat dissipation hole, 3-screw rod, 301-left-handed thread, 302-right-handed thread, 4-rectangular fixed plate, 5-first rectangular moving plate, 501-first through hole, 5011-first internal thread, 502-limiting hole, 503-strip-shaped groove, 504-T-shaped insert block, 6-second rectangular moving plate, 601-second through hole, 6011-second internal thread, 602-limiting groove, 7-air pump, 701-air outlet hard tube, 702-first air guide branch tube, 7021-first electromagnetic valve, 703-first air guide hose, 7031-hoop, 704-sealed air bag, 7051-second air guide branch tube, 7051-third electromagnetic valve, 7052-pressure sensor, 706-air guide hard tube, 7061-second electromagnetic valve, 707-second air guide hose, 708-third air guide hose, 709-inflatable sealing ring, 710-air inlet hard tube, 8-portal frame, 801-bar chute, 802-electric cylinder, 9-pressure plate, 901-bar insert block, 902-anti-skid projection, 10-door body, 11-handle, 12-control box, 1201-operating button, 1202-display screen, 1203-first indicator light, 1204-second indicator light.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 8, an embodiment of the present invention provides an apparatus for testing airtightness of a tubular medical device, including: box 1, centre gripping subassembly and test assembly, one side of box 1 articulates through the hinge has a door body 10, and fixed mounting has handle 11 on the door body 10, through door body 10 and the handle 11 that sets up, is convenient for maintain the air pump 7 of 1 inside of box and overhauls. The clamping assembly comprises a motor 2, a screw rod 3 and a rectangular fixing plate 4, the motor 2 is sleeved with a dustproof housing 201, heat dissipation holes 2011 are formed in the dustproof housing 201, dust deposition of the motor 2 can be prevented through the dustproof housing 201, meanwhile, the heat inside the dustproof housing 201 can be timely dissipated through the heat dissipation holes 2011, and the service life of the motor 2 is prolonged.
The motor 2 is fixedly arranged at the top of the box body 1, one end of the screw rod 3 is fixedly connected with a rotating shaft of the motor 2 through a coupler, the other end of the screw rod is rotatably arranged at one side of the rectangular fixed plate 4 through a ball bearing, the rectangular fixed plate 4 is fixedly arranged at the top of the box body 1, a first rectangular moving plate 5 and a second rectangular moving plate 6 are arranged on the screw rod 3 in a threaded manner, the tops of the relatively close sides of the first rectangular moving plate 5 and the second rectangular moving plate 6 are respectively provided with a strip-shaped groove 503, the end parts of the strip-shaped grooves 503 are communicated with a limiting groove 602, the first rectangular moving plate 5 and the second rectangular moving plate 6 are respectively provided with a limiting hole 502, one end of the screw rod 3 is provided with a left-handed thread 301, the other end of the screw rod is provided with a right-handed thread 302, the first rectangular moving plate 5 is provided with a first through hole 501, a first internal thread 5011 matched with the left-handed thread 301 is arranged in the first through hole 501, and a second through hole 601 is arranged in the second rectangular moving plate 6, a second internal thread 6011 matched with the right-handed thread 302 is formed in the second through hole 601, the first rectangular moving plate 5 and the second rectangular moving plate 6 are arranged oppositely, T-shaped inserting blocks 504 are fixedly mounted at the bottoms of the first rectangular moving plate 5 and the second rectangular moving plate 6, a T-shaped sliding groove 101 for enabling the T-shaped inserting blocks 504 to slide is formed in the top of the box body 1, and the T-shaped inserting blocks 504 are slidably mounted in the T-shaped sliding groove 101.
The clamping and fixing principle of the clamping assembly is as follows: the two ends of the tube body to be tested are respectively placed into the limiting grooves 602 on the first rectangular moving plate 5 and the second rectangular moving plate 6, the tube body to be tested is clamped and fixed through the clamping assembly, the motor 2 drives the screw rod 3 to rotate, the first rectangular moving plate 5 and the second rectangular moving plate 6 move relatively close to or far away from each other, the tube body to be tested is clamped tightly, the tube body testing device is suitable for tube bodies with different lengths, the applicability of the air tightness testing device of tubular medical instruments is improved, and the stability of the first rectangular moving plate 5 and the stability of the second rectangular moving plate 6 in the relative movement process are improved through the mutual matching of the T-shaped sliding grooves 101 and the T-shaped inserting blocks 504.
Referring to fig. 1 to 5 and 8, the composition of the test assembly: the testing assembly comprises an air pump 7 fixedly arranged in the box body 1, an air inlet is communicated with an air inlet hard tube 710, the end part of the air inlet hard tube 710 penetrates through the box body 1 and extends outwards, an air outlet is communicated with an air outlet hard tube 701, one side of the air outlet hard tube 701 is communicated with a first air guide branch tube 702, a first electromagnetic valve 7021 is fixedly arranged on the first air guide branch tube 702, the end part of the first air guide branch tube 702 is communicated with a first air guide hose 703, the end part of the first air guide hose 703 is fixedly provided with a sealing air bag 704, the other side of the air outlet hard tube 701 is communicated with a second air guide branch tube 705, the middle part of the second air guide branch tube 705 is communicated with an air guide hard tube 706, a second electromagnetic valve 7061 is fixedly arranged on the air guide hard tube 706, the end part of the air guide hard tube 706 is communicated with a second air guide hose 707, the end parts of the first air guide hose 703 and the second air guide hose 707 are clamped in a strip-shaped groove 503, and hoops 7031 are fixedly arranged at the tops of a first rectangular moving plate 5 and a second rectangular moving plate 6, the first air guide hose 703 and the second air guide hose 707 are both clamped in the clamp 7031, the first air guide hose 703 and the second air guide hose 707 are limited and fixed by the action of the clamp 7031, the phenomenon of displacement and winding is prevented, the end portion of the second air guide hose 707 is communicated with an inflatable sealing ring 709, the sealing airbag 704 and the inflatable sealing ring 709 are both arranged in the limiting groove 602, the second air guide branch pipe 705 is fixedly provided with a third electromagnetic valve 7051 and a pressure sensor 7052, the third electromagnetic valve 7051 is arranged between the air guide hard pipe 706 and the pressure sensor 7052, the pressure sensor 7052 is arranged between the third electromagnetic valve 7051 and the second air guide hose 705, the end portion of the second air guide branch pipe 705 is communicated with a third air guide hose 708, and the end portion of the third air guide hose 708 is connected with the inner wall of the inflatable sealing ring 709 through the limiting hole 502 in a sealing manner.
Testing principle of the testing assembly: respectively placing a sealing air bag 704 and an inflatable sealing ring 709 into the interiors of two ends of a to-be-tested pipe body, opening a first electromagnetic valve 7021 and a second electromagnetic valve 7061 through an operation button 1201 on an operation control box 12, inflating the sealing air bag 704 through a first air guide branch pipe 702 and a first air guide hose 703, inflating the inflatable sealing ring 709 through a second air guide branch pipe 705, an air guide hard pipe 706 and a second air guide hose 707, enabling the sealing air bag 704 and the inflatable sealing ring 709 to expand to tightly abut against the inner wall of the to-be-tested pipe body, sealing two ends of the to-be-tested pipe body, preventing the sealing air bag 704 and the inflatable sealing ring 709 from driving the to-be-tested pipe body to shift after inflation and expansion through the action of a limiting groove 602, influencing the accuracy of the test, then closing a first electromagnetic valve 7021 and a second electromagnetic valve 7061, opening a third electromagnetic valve 7051, inflating the to-be-tested pipe body through a second air guide branch pipe 705 and a third air guide hose 708, after reaching a preset value, the third electromagnetic valve 7051 is closed, and then the change of the internal pressure value of the pipe body to be tested is transmitted to the PLC controller inside the control box 12 through the pressure sensor 7052.
Referring to fig. 2, 3 and 6, the gas tightness testing device for the tubular medical instrument further comprises a fixing component, the fixing component comprises a portal frame 8, an electric cylinder 802 is fixedly installed at the top of the portal frame 8, a pressing plate 9 is fixedly installed at the end part of a telescopic rod of the electric cylinder 802, an arc-shaped notch is formed in the middle of one side, away from the electric cylinder 802, of the pressing plate 9, and the anti-skid protrusions 902 are fixedly arranged in the arc-shaped gap, the strip-shaped inserting blocks 901 are fixedly arranged on the two side walls of the pressure plate 9 close to the portal frame 8, the strip-shaped sliding grooves 801 for the strip-shaped inserting blocks 901 to slide are arranged on the inner side walls of the two opposite sides of the portal frame 8, the strip-shaped inserting blocks 901 are slidably arranged in the strip-shaped sliding grooves 801, the fixing of the to-be-tested pipe body is facilitated through the arranged fixing components, meanwhile, the strip-shaped sliding groove 801 is matched with the strip-shaped inserting block 901, so that the stability of the pressing plate 9 in the up-and-down moving process is improved.
Referring to fig. 1 to 3, the tubular medical instrument airtightness testing device further includes a control box 12, a PLC controller is fixedly installed inside the control box 12, an operation button 1201, a display screen 1202, a first indicator lamp 1203 and a second indicator lamp 1204 are fixedly installed on the control box 12, a signal output end of the PLC controller is electrically connected to an electric control end of the motor 2, an electric control end of the first electromagnetic valve 7021, an electric control end of the second electromagnetic valve 7061, an electric control end of the third electromagnetic valve 7051, an electric control end of the display screen 1202, an electric control end of the first indicator lamp 1203 and an electric control end of the second indicator lamp 1204, respectively, a signal input end of the PLC controller is electrically connected to the operation button 1201 and the pressure sensor 7052, so that the motor 2, the first electromagnetic valve 7021, the second electromagnetic valve 7061, the third electromagnetic valve 7051, the display screen, the first indicator lamp 1203 and the second indicator lamp 1204 can be controlled by the operation button 1201 on the control box 12, and displaying the test result on a display screen 1202, and knowing whether the airtightness of the pipe body to be tested is qualified or not through a first indicator lamp 1203 and a second indicator lamp 1204, so that the test is clear and intuitive.
The working principle is as follows: two ends of a tube body to be tested are respectively placed into the limiting grooves 602 on the first rectangular moving plate 5 and the second rectangular moving plate 6, the PLC controller in the control box 12 controls the motor 2 to drive the screw rod 3 to rotate, so that the first rectangular moving plate 5 and the second rectangular moving plate 6 move relatively close to or far away from each other, the tube body to be tested is clamped and is suitable for tube bodies with different lengths, the clamped tube body to be tested is pressed downwards through the pressing plate 9, the fixing effect on the tube body to be tested is enhanced, meanwhile, the sealing air bag 704 and the inflation sealing ring 709 are respectively placed into the two ends of the tube body to be tested, the first electromagnetic valve 7021 and the second electromagnetic valve 7061 are opened through the operating button 1201 on the control box 12, the sealing air bag 704 is inflated through the first air guide branch pipe 702 and the first air guide hose 703, the inflation sealing ring 709 is inflated through the second air guide branch pipe 705, the air guide hard air guide pipe 706 and the second hose 707, the sealing airbag 704 and the inflatable sealing ring 709 are made to expand to tightly abut against the inner wall of the pipe body to be tested, two ends of the pipe body to be tested are sealed, then the first electromagnetic valve 7021 and the second electromagnetic valve 7061 are closed, the third electromagnetic valve 7051 is opened, the pipe body to be tested is inflated through the second air guide branch pipe 705 and the third air guide hose 708, the third electromagnetic valve 7051 is closed after a preset value is reached, then the change of the internal pressure value of the pipe body to be tested is transmitted to the PLC inside the control box 12 through the pressure sensor 7052, the PLC controls the first indicator lamp 1203 or the second indicator lamp 1204 to flicker according to the result while displaying the result obtained by comparison on the display screen 1202, if the result is qualified, the first indicator lamp 1203 flicker is controlled, and if the result is unqualified, the second indicator lamp 1204 flicker is controlled, so that the test.
To sum up, this tubulose medical instrument gas tightness testing arrangement carries out the centre gripping through the centre gripping subassembly to the body that awaits measuring fixed, and rethread test subassembly carries out the gas tightness test to the body that awaits measuring, directly shows the structure that obtains the test through the control box simultaneously, and is clear directly perceived, has effectively promoted efficiency of software testing, and can guarantee the aridity of pipe fitting, need not to carry out the redrying to the pipe fitting again.
The parts not involved in the present invention are the same as or can be implemented by the prior art. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A device for testing the air tightness of tubular medical instruments is characterized by comprising a box body, a clamping assembly and a testing assembly,
the clamping assembly comprises a motor, a screw rod and a rectangular fixed plate, the motor is fixedly installed at the top of the box body, one end of the screw rod is fixedly connected with a rotating shaft of the motor through a coupler, the other end of the screw rod is rotatably installed on one side of the rectangular fixed plate through a ball bearing, the rectangular fixed plate is fixedly installed at the top of the box body, and a first rectangular moving plate and a second rectangular moving plate are installed on the screw rod in a threaded mode;
the testing assembly comprises an air pump, the air pump is installed inside the box body, an air inlet of the air pump is communicated with an air inlet hard pipe, the end portion of the air inlet hard pipe penetrates through the box body and extends outwards, an air outlet of the air pump is communicated with an air outlet hard pipe, one side of the air outlet hard pipe is communicated with a first air guide branch pipe, a first electromagnetic valve is fixedly installed on the first air guide branch pipe, the end portion of the first air guide branch pipe is communicated with a first air guide hose, a sealing air bag is fixedly installed at the end portion of the first air guide hose, the other side of the air outlet hard pipe is communicated with a second air guide branch pipe, the middle portion of the second air guide branch pipe is communicated with an air guide hard pipe, a second electromagnetic valve is fixedly installed on the air guide hard pipe, the end portion of the air guide hard pipe is communicated with a second air guide hose, the end portion of the second air guide hose is communicated with an inflatable sealing ring, and a third electromagnetic valve and a pressure sensor are fixedly installed on the second air guide branch pipe, and the third electromagnetic valve is arranged between the air guide hard pipe and the pressure sensor, the pressure sensor is arranged between the third electromagnetic valve and the second air guide hose, the end part of the second air guide branch pipe is communicated with the third air guide hose, and the end part of the third air guide hose is hermetically connected with the inner wall of the inflatable sealing ring through a limiting hole.
2. The tubular medical device airtightness testing apparatus according to claim 1, wherein: still include fixed subassembly, fixed subassembly includes the portal frame, the electric jar is installed at the top of portal frame, the tip fixed mounting of electric jar telescopic link has the clamp plate, the clamp plate is close to equal fixed mounting has the bar inserted block on two lateral walls of portal frame, all seted up the confession on the inside wall of the relative both sides of portal frame the gliding bar spout of bar inserted block, the bar inserted block slidable mounting be in the bar spout.
3. The tubular medical device airtightness testing apparatus according to claim 2, wherein: an arc-shaped notch is formed in the middle of one side, far away from the electric cylinder, of the pressing plate, and an anti-skid bump is fixedly mounted inside the arc-shaped notch.
4. The tubular medical device airtightness testing apparatus according to claim 3, wherein: still include the control box, the inside fixed mounting of control box has the PLC controller, fixed mounting has operating button, display screen, first pilot lamp and second pilot lamp on the control box, the signal output part of PLC controller respectively with the automatically controlled end of motor the automatically controlled end of first solenoid valve the automatically controlled end of second solenoid valve the automatically controlled end of third solenoid valve the automatically controlled end of display screen the automatically controlled end of first pilot lamp and the automatically controlled end electric connection of second pilot lamp, the signal input part of PLC controller respectively with operating button with pressure sensor electric connection.
5. The tubular medical device airtightness testing apparatus according to claim 4, wherein: one end of the screw rod is set as a left-handed thread, the other end of the screw rod is set as a right-handed thread, a first through hole is formed in the first rectangular moving plate, a first internal thread matched with the left-handed thread is formed in the first through hole, a second through hole is formed in the second rectangular moving plate, a second internal thread matched with the right-handed thread is formed in the second through hole, and the first rectangular moving plate and the second rectangular moving plate are arranged oppositely.
6. The tubular medical device airtightness testing apparatus according to claim 5, wherein: the bottom of the first rectangular moving plate and the bottom of the second rectangular moving plate are both fixedly provided with T-shaped inserting blocks, the top of the box body is provided with T-shaped sliding grooves for the T-shaped inserting blocks to slide, and the T-shaped inserting blocks are slidably arranged in the T-shaped sliding grooves.
7. The tubular medical device airtightness testing apparatus according to claim 6, wherein: first rectangle movable plate with the side top that second rectangle movable plate is close to relatively all is equipped with the bar groove, just the tip intercommunication in bar groove has the spacing groove, first rectangle movable plate with all be equipped with spacing hole on the second rectangle movable plate, first air guide hose with the tip of second air guide hose is all located the bar inslot, sealed gasbag with inflatable seal circle all sets up the spacing inslot.
8. The tubular medical device airtightness testing apparatus according to claim 1, wherein: the air guide hose comprises a first rectangular moving plate, a second rectangular moving plate and a clamp, wherein the top of the first rectangular moving plate and the top of the second rectangular moving plate are fixedly provided with the clamp, and the first air guide hose and the second air guide hose are arranged in the clamp.
9. The tubular medical device airtightness testing apparatus according to claim 1, wherein: one side of the box body is hinged with a door body through a hinge, and a handle is fixedly mounted on the door body.
10. The tubular medical device airtightness testing apparatus according to claim 1, wherein: the motor is sleeved with a dustproof cover with heat dissipation holes.
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