CN114112234A - Airtightness testing device and airtightness testing method for nitrile rubber medical gloves - Google Patents
Airtightness testing device and airtightness testing method for nitrile rubber medical gloves Download PDFInfo
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- CN114112234A CN114112234A CN202111510870.XA CN202111510870A CN114112234A CN 114112234 A CN114112234 A CN 114112234A CN 202111510870 A CN202111510870 A CN 202111510870A CN 114112234 A CN114112234 A CN 114112234A
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- 229920000459 Nitrile rubber Polymers 0.000 title claims abstract description 37
- 238000012360 testing method Methods 0.000 title claims abstract description 33
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229920001971 elastomer Polymers 0.000 claims abstract description 11
- 239000010720 hydraulic oil Substances 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 19
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000003921 oil Substances 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 150000002825 nitriles Chemical class 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 6
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 208000030961 allergic reaction Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000001924 cycloalkanes Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010556 emulsion polymerization method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012454 non-polar solvent Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- G01M3/027—Details with respect to the testing of elastic elements, e.g. gloves, condoms
Abstract
The invention provides a device for testing the air tightness of medical butadiene-acrylonitrile rubber gloves, which comprises a base, a clamping component, an air supply component, a control component and an alarm component, wherein the clamping component is used for clamping the butadiene-acrylonitrile rubber gloves up and down; and the air pressure difference is adopted for accurate and effective detection.
Description
Technical Field
The invention discloses an air tightness testing device and an air tightness testing method for medical butadiene-acrylonitrile rubber gloves, and relates to the technical field of production equipment of medical butadiene-acrylonitrile rubber gloves.
Background
The nitrile rubber is prepared from butadiene and acrylonitrile by an emulsion polymerization method, and the product has excellent oil resistance, higher wear resistance and better heat resistance. The high-quality nitrile rubber is matched with other additives and is refined and processed; it has no protein, no allergic reaction to human skin, no toxicity, no harm, high durability and high adhesion.
The butyronitrile gloves can be divided into powder gloves and powder-free gloves. The length of the butyronitrile gloves is 23cm and 30 cm; the thickness is 0.08-0.09mm, the color is mainly blue, the gloves are different from latex gloves, the butyronitrile gloves are insoluble in nonpolar solvents, (can effectively resist alkane and cycloalkane nonpolar reagents, such as n-pentane, n-hexane, cyclohexane and the like, and are mostly marked as green, and the butyronitrile gloves are protective gloves commonly used in laboratories.
In the past, the airtightness detection of the nitrile gloves is mostly carried out in a soaking mode, if bubbles are generated, the airtightness is proved to be poor, but for some tiny leakage, the bubbles are not obvious, the tiny bubbles are easily dissolved in water, and the detection effect is poor at the moment; if the airtightness detection is carried out under high air pressure, but considering that the buna glove is soft in texture, strong in deformability and poor in air pressure difference detection accuracy, an airtightness testing device and an airtightness testing method for the buna rubber medical glove are urgently needed to solve the problems.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a device and a method for testing the air tightness of a butadiene acrylonitrile rubber medical glove, which are used for solving the problems in the background art, the device is reasonable in structure, and expansion grooves in an upper top plate and a lower top plate effectively support the butadiene acrylonitrile glove; and the air pressure difference is adopted for accurate and effective detection.
In order to achieve the purpose, the invention is realized by the following technical scheme: a device for testing the air tightness of medical butadiene-acrylonitrile rubber gloves comprises a base, a clamping assembly, an air supply assembly, a control assembly and an alarm assembly, wherein the clamping assembly is used for clamping the butadiene-acrylonitrile rubber gloves up and down, the air supply assembly is used for supplying air to the butadiene-acrylonitrile gloves, the control assembly is used for automatically detecting the air tightness of the butadiene-acrylonitrile rubber gloves, the alarm assembly is used for giving an alarm to prompt air tightness leakage, the clamping assembly is arranged above the base, the air supply assembly is arranged on one side of the clamping assembly, and the control assembly and the alarm assembly are both arranged above the base;
the clamping assembly is located above the base and comprises an upper top plate, a lower top plate, a hydraulic pump and a hydraulic oil cylinder, the hydraulic pump is fixed above the base, the lower top plate is fixed on the hydraulic pump, the hydraulic oil cylinder is installed at four corners of the lower top plate, a power shaft of the hydraulic oil cylinder penetrates through the lower top plate and is connected with the upper top plate, expansion grooves are formed in the inner sides of the upper top plate and the lower top plate, and sealing gaskets are arranged at the edge portions of the expansion grooves.
Further, the air feed subassembly is located roof down, and it includes high compression pump, electron barometer, high compression pump sets up the bottom at roof down, the gas outlet of high compression pump is connected with the solenoid valve, the exit of solenoid valve is connected with the air duct, electron barometer and air duct intercommunication.
Further, the alarm assembly is a strobe light, and the strobe light is mounted on the lower top plate.
Furthermore, the control assembly comprises a photoelectric switch, a single chip microcomputer and a hydraulic pump inlet and outlet control circuit, the photoelectric switch is arranged on the upper surface of the lower top plate, the inlet and outlet ends of the single chip microcomputer are connected with the photoelectric switch and the electronic barometer, the output end of the single chip microcomputer is connected with the hydraulic pump inlet and outlet control circuit, the high-pressure air pump, the electromagnetic valve and the strobe light, and the hydraulic pump inlet and outlet control circuit is connected with the hydraulic pump.
Furthermore, one side of the expansion groove, which is close to the air guide pipe, is provided with a clamping groove, a hollow support plug for supporting air inlet at the mouth of the gloves is placed in the clamping groove, and the clamping groove and the hollow support plug are matched with each other.
Furthermore, the inner wall of the expansion groove is provided with anti-skid convex grains.
Furthermore, a plurality of air holes are formed in the edge part of the sealing washer in a penetrating mode.
Furthermore, a plurality of hydraulic oil cylinders are arranged and are connected in parallel and are connected with a hydraulic pump through hydraulic conduits.
Further, the air tightness test method of the air tightness test device for the nitrile rubber medical gloves comprises the following steps of:
step A, device installation preparation:
step A1, electrically connecting an external control host with a single chip microcomputer, receiving an input instruction of the external control host by the single chip microcomputer, controlling the hydraulic pump to supply oil in the forward direction by the single chip microcomputer through a hydraulic pump inlet and outlet control circuit, extending a power shaft of a hydraulic oil cylinder and supporting an upper top plate to move upwards; until the power shaft of the hydraulic oil cylinder is completely extended out;
step A2, filling the mouth of the gloves with a hollow support plug, flatly laying the gloves in an expansion groove, and putting the mouth of the gloves in a clamping groove;
step A3, inputting an instruction by a single chip microcomputer, controlling the hydraulic pump to reversely supply oil by the single chip microcomputer through a hydraulic pump inlet and outlet control circuit, retracting a power shaft of a hydraulic cylinder, enabling an upper top plate to move downwards, detecting the distance between the upper top plate and a lower top plate at the moment by a photoelectric switch, transmitting the distance to the single chip microcomputer through data, comparing the single chip microcomputer with an internal preset value, controlling the hydraulic pump to stop supplying oil by the single chip microcomputer through the hydraulic pump inlet and outlet control circuit when the distance is smaller than or equal to the preset distance, and stopping moving the power shaft of the hydraulic cylinder;
step A4, the sealing gaskets between the upper top plate and the lower top plate are tightly buckled with each other, the gloves are wrapped in the expansion grooves, and the body parts of the gloves are mutually isolated from the mouth parts of the gloves through the clamping grooves;
B. air supply and air tightness test:
step B1, inputting an instruction by the singlechip, controlling the high-pressure air pump and the electromagnetic valve to be electrified and opened at the same time, supplying air into the air guide pipe by the high-pressure air pump through the electromagnetic valve, injecting the air into the butyronitrile gloves through the hollow supporting plugs at the tail ends of the air guide pipe, and expanding the butyronitrile gloves in the expansion grooves;
step B2, the electronic barometer detects the injected air pressure to a proper value and inputs the air pressure to the single chip microcomputer, the single chip microcomputer is compared with the air pressure value preset in the single chip microcomputer, and when the air pressure value is larger than the preset air pressure value, the single chip microcomputer controls the high-pressure air pump and the electromagnetic valve to be closed simultaneously;
and C: air leakage alarm: if the air tightness of the gloves is poor, air is leaked, the air is exhausted through the air holes in the sealing gaskets, the air pressure of the electronic barometer is reduced at the moment, the detected air pressure value is input into the single chip microcomputer, the single chip microcomputer is compared with the air pressure value preset inside, and when the detected air pressure value is smaller than the preset air pressure value, the single chip microcomputer controls the strobe light to flash for prompting the leakage
The invention has the beneficial effects that:
1. the shape of the gloves is effectively supported through the expansion grooves in the upper top plate and the lower top plate; then, the air pressure difference is adopted to accurately and effectively detect the gloves;
2. according to the invention, the sealing gaskets between the upper top plate and the lower top plate are tightly buckled with each other, the gloves are wrapped in the expansion grooves, and the expansion grooves can effectively support the air pressure expansion in the gloves; if the air tightness of the gloves is not good, air leakage is carried out through the air holes in the sealing washers;
3. when the electronic barometer detects air leakage, air is exhausted through the air holes in the sealing washer, the air pressure of the electronic barometer is reduced, and when the air pressure is smaller than a preset air pressure value, the single chip microcomputer controls the strobe light to flicker so as to prompt leakage.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural diagram of an airtightness testing device for medical nitrile rubber gloves, according to the present invention;
FIG. 2 is a front sectional view of the airtightness testing device for nitrile rubber medical gloves of the present invention;
FIG. 3 is a schematic diagram of the connection of a control assembly in the airtightness testing device for medical nitrile rubber gloves of the present invention;
in the figure: the device comprises an upper top plate 1, a power shaft 2, a lower top plate 3, a flash lamp 301, a hydraulic oil cylinder 4, a base 5, a hydraulic pump 6, a high-pressure air pump 7, an electronic barometer 8, a sealing washer 9, air holes 91, a clamping groove 10, a hollow supporting plug 11, an expansion groove 12, an air guide pipe 13, an electromagnetic valve 131 and a photoelectric switch 14.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a medical gloves gas tightness testing arrangement of butadiene acrylonitrile rubber, includes base 5, the centre gripping subassembly that is used for upper and lower centre gripping butadiene acrylonitrile gloves, is used for the air feed subassembly of butadiene acrylonitrile gloves air feed, is used for the control assembly of automated inspection butadiene acrylonitrile gloves gas tightness to and be used for reporting to the police and indicate the alarm assembly that airtight was revealed, solved previous butadiene acrylonitrile gloves and be not convenient for carry out the problem that airtight detected.
The specific working principle is as follows: the first step is to prepare the installation of the device, the device is electrically connected with a single chip microcomputer through an external control host, the single chip microcomputer receives an input instruction of the external control host, the single chip microcomputer controls a hydraulic pump 6 to supply oil in the forward direction through a hydraulic pump inlet and outlet control circuit, and a hydraulic oil cylinder 4 supports an upper top plate 1 to move upwards;
then filling the opening part of the gloves with a hollow supporting plug 11, flatly laying the gloves in an expansion groove 12, putting the opening part of the gloves in a clamping groove 10, and facilitating air to enter the inside of the gloves;
then inputting an instruction to the single chip microcomputer, controlling the hydraulic pump 6 to reversely supply oil by the single chip microcomputer through the hydraulic pump in-out control circuit, retracting the power shaft 2 of the hydraulic cylinder 4, enabling the upper top plate 1 to move downwards, detecting a distance L1 between the upper top plate 1 and the lower top plate 3 at the moment by the photoelectric switch 14, transmitting the distance L1 to the single chip microcomputer through data, comparing the single chip microcomputer with an internal preset distance L2, controlling the hydraulic pump 6 to stop supplying oil by the single chip microcomputer through the hydraulic pump in-out control circuit when L1 is smaller than L2, and stopping moving the power shaft 2 of the hydraulic cylinder 4;
at the moment, the sealing gaskets 9 between the upper top plate 1 and the lower top plate 3 are tightly buckled with each other, the gloves are wrapped in the expansion grooves 12, and the expansion grooves 12 can effectively support the air pressure expansion in the gloves; if the air tightness of the gloves is poor, leaked air of the gloves can leak through the air holes 91 in the sealing gaskets 9 and the anti-skid convex lines on the inner walls of the expansion grooves 12;
secondly, performing gas supply airtightness test, inputting an instruction to the single chip microcomputer, controlling the high-pressure air pump 7 and the electromagnetic valve 131 to be electrified and opened at the same time, supplying gas into the gas guide pipe 13 through the electromagnetic valve 131 by the high-pressure air pump 7, injecting the gas into the butyronitrile gloves through the hollow supporting plug 11 at the tail end of the gas guide pipe 13, and expanding the butyronitrile gloves in the expansion groove 12; the electronic barometer 8 detects that the injected air pressure reaches a proper air pressure value S1 and inputs the air pressure value into the single chip microcomputer, the single chip microcomputer is compared with an air pressure value S2 preset inside, and when S1 is larger than S2, the single chip microcomputer controls the high-pressure air pump 7 and the electromagnetic valve 131 to be closed simultaneously;
when detecting gas leakage, gas is discharged through the air holes 91 in the sealing washer 9, the air pressure of the electronic barometer 8 is reduced, and when the air pressure is smaller than a preset air pressure value, the single chip microcomputer controls the strobe lamp 301 to flicker for prompting leakage.
A clamping groove 10 is formed in one side, close to an air guide pipe 13, of an expansion groove 12, a hollow supporting plug 11 used for supporting air inlet of the mouth of a glove of the butyronitrile gloves is placed in the clamping groove 10, and the clamping groove 10 and the hollow supporting plug 11 are mutually matched and used for supporting smooth air inlet of the mouth of the glove of the butyronitrile gloves.
The edge part of the sealing washer 9 is provided with a plurality of vent holes 91 in a penetrating way, so that the leaked gas of the gloves can be discharged in time.
A plurality of hydraulic oil cylinders 4 are arranged, the plurality of hydraulic oil cylinders 4 are arranged in parallel and are connected with a hydraulic pump 6 through hydraulic conduits, so that the plurality of hydraulic oil cylinders 4 move synchronously to drive an upper top plate 1 to vertically move up and down.
In addition, the invention provides an air tightness testing method for the butadiene-acrylonitrile rubber medical gloves, which comprises the following steps:
step A, device installation preparation:
step A1, electrically connecting an external control host with a single chip microcomputer, receiving an input instruction of the external control host by the single chip microcomputer, controlling the hydraulic pump 6 to supply oil in the forward direction by the single chip microcomputer through a hydraulic pump inlet and outlet control circuit, extending the power shaft 2 of the hydraulic oil cylinder 4, and supporting the upper top plate 1 to move upwards; until the power shaft 2 of the hydraulic oil cylinder 4 is completely extended out;
step A2, filling the mouth of the gloves with a hollow support plug 11, flatly laying the gloves in an expansion groove 12, and putting the mouth of the gloves in a clamping groove 10;
step A3, inputting an instruction by a single chip microcomputer, controlling a hydraulic pump 6 to reversely supply oil by the single chip microcomputer through a hydraulic pump in-out control circuit, retracting a power shaft 2 of a hydraulic oil cylinder 4, enabling an upper top plate 1 to move downwards, detecting a distance L1 between the upper top plate 1 and a lower top plate 3 at the moment by a photoelectric switch 14, transmitting the distance L1 to the single chip microcomputer through data, comparing the single chip microcomputer with an internal preset distance L2, and when L1 is less than L2, controlling the hydraulic pump 6 to stop supplying oil by the single chip microcomputer through the hydraulic pump in-out control circuit, and stopping moving the power shaft 2 of the hydraulic oil cylinder 4;
step A4, the sealing gaskets 9 between the upper top plate 1 and the lower top plate 3 are tightly buckled with each other, the gloves are wrapped in the expansion grooves 12, and the body parts of the gloves are mutually isolated from the mouth parts of the gloves through the clamping grooves 10;
step B, air supply and air tightness test:
step B1, inputting an instruction by the singlechip, controlling the high-pressure air pump 7 and the electromagnetic valve 131 to be powered on and opened simultaneously, supplying air into the air guide pipe 13 by the high-pressure air pump 7 through the electromagnetic valve 131, injecting the air into the butyronitrile gloves through the hollow support plugs 11 at the tail ends of the air guide pipes 13, and expanding the butyronitrile gloves in the expansion grooves 12;
step B2, detecting the injected air pressure to a proper air pressure value S1 by the electronic barometer 8, inputting the air pressure to the single chip microcomputer, comparing the single chip microcomputer with an internal preset air pressure value S2, and controlling the high-pressure air pump 7 and the electromagnetic valve 131 to be closed simultaneously by the single chip microcomputer when S1 is greater than S2;
and C: air leakage alarm: if the air tightness of the nitrile gloves is poor, air is leaked, the air is exhausted through the air holes 91 in the sealing gaskets 9, the air pressure value S1 of the electronic barometer 8 is reduced at the moment, the detected air pressure value is input into the single chip microcomputer, the single chip microcomputer is compared with the air pressure value S2 preset inside, and when S1 is smaller than 0.01% of S2, the single chip microcomputer controls the strobe lamp 301 to flicker for prompting leakage.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a medical gloves gas tightness testing arrangement of butadiene acrylonitrile rubber which characterized in that: the device comprises a base (5), a clamping component for clamping a piece of nitrile glove up and down, an air supply component for supplying air to the piece of nitrile glove, a control component for automatically detecting the air tightness of the piece of nitrile glove, and an alarm component for alarming and prompting air tightness leakage, wherein the clamping component is arranged above the base (5), the air supply component is arranged on one side of the clamping component, and the control component and the alarm component are both arranged above the base;
the clamping assembly comprises an upper top plate (1), a lower top plate (3), a hydraulic pump (6) and a hydraulic oil cylinder (4), the hydraulic pump (6) is fixed above a base (5), the lower top plate (3) is fixed on the hydraulic pump (6), the hydraulic oil cylinder (4) is installed at the four corners of the lower top plate (3), a power shaft (2) of the hydraulic oil cylinder (4) penetrates through the lower top plate (3) to be connected with the upper top plate (1), expansion grooves (12) are formed in the inner sides of the upper top plate (1) and the lower top plate (3), and sealing gaskets (9) are arranged at the edge portions of the expansion grooves (12).
2. The device for testing the airtightness of the medical nitrile rubber gloves according to claim 1, wherein: the air feed subassembly is located roof (3) down, and it includes high compression pump (7), electron barometer (8), high compression pump (7) set up the bottom of roof (3) down, the gas outlet of high compression pump (7) is connected with solenoid valve (131), the exit of solenoid valve (131) is connected with air duct (13), electron barometer (8) and air duct (13) intercommunication.
3. The device for testing the airtightness of the medical nitrile rubber gloves according to claim 1, wherein: the alarm assembly is a strobe light (301), and the strobe light (301) is installed on the lower top plate (3).
4. The device for testing the airtightness of the medical nitrile rubber gloves according to claim 1, wherein: the control assembly comprises a photoelectric switch (14), a single chip microcomputer and a hydraulic pump access control circuit, wherein the photoelectric switch (14) is arranged on the upper surface of the lower top plate (3), the access end of the single chip microcomputer is connected with the photoelectric switch (14) and an electronic barometer (8), the output end of the single chip microcomputer is connected with the hydraulic pump access control circuit, a high-pressure air pump (7), an electromagnetic valve (131) and a frequency flashing light (301), and the hydraulic pump access control circuit is connected with a hydraulic pump (6).
5. The device for testing the airtightness of the medical nitrile rubber gloves according to claim 1, wherein: one side of the expansion groove (12) close to the air guide pipe (13) is provided with a clamping groove (10), a hollow supporting plug (11) for supporting air inlet at the mouth of the gloves is placed in the clamping groove (10), and the clamping groove (10) and the hollow supporting plug (11) are matched with each other.
6. The device for testing the airtightness of the medical nitrile rubber gloves according to claim 1, wherein: the inner wall of the expansion groove (12) is provided with anti-skid convex lines.
7. The device for testing the airtightness of the medical nitrile rubber gloves according to claim 1, wherein: the edge part of the sealing washer (9) is provided with a plurality of air holes (91) in a penetrating way.
8. The device for testing the airtightness of the medical nitrile rubber gloves according to claim 1, wherein: the hydraulic oil cylinder (4) is provided with a plurality of hydraulic oil cylinders (4), and the plurality of hydraulic oil cylinders (4) are arranged in parallel and are connected with the hydraulic pump (6) through hydraulic conduits.
9. The airtightness testing method for the airtightness testing device for the nitrile rubber medical gloves, according to any one of claims 1 to 8, is characterized by comprising the following steps:
step A, device installation preparation:
step A1, electrically connecting an external control host with a single chip microcomputer, receiving an input instruction of the external control host by the single chip microcomputer, inputting the instruction by the single chip microcomputer, controlling a hydraulic pump (6) to supply oil in the forward direction by the single chip microcomputer through a hydraulic pump inlet and outlet control circuit, extending a power shaft (2) of a hydraulic oil cylinder (4), and supporting an upper top plate (1) to move upwards;
step A2, filling the mouth of the gloves with a hollow support plug (11), flatly laying the gloves in an expansion groove (12), and putting the mouth of the gloves in a clamping groove (10);
a3, inputting an instruction by a singlechip, controlling a hydraulic pump (6) to reversely supply oil by the singlechip through a hydraulic pump access control circuit, retracting a power shaft (2) of a hydraulic oil cylinder (4), moving an upper top plate (1) downwards, detecting and detecting a distance L1 between the upper top plate (1) and a lower top plate (3) at the moment by a photoelectric switch (14), transmitting the distance L1 to the singlechip through data, comparing the singlechip with an internal preset distance L2, controlling the hydraulic pump (6) to stop supplying oil by the singlechip through the hydraulic pump access control circuit when L1 is smaller than L2, and stopping moving the power shaft (2) of the hydraulic oil cylinder (4);
step A4, according to the step A3, after the power shaft (2) of the hydraulic oil cylinder (4) stops moving, the sealing gaskets (9) between the upper top plate (1) and the lower top plate (3) are tightly buckled with each other, the Buna-N gloves are wrapped in the expansion grooves (12), and the body parts of the Buna-N gloves are mutually isolated from the mouth parts of the Buna-N gloves through the clamping grooves (10);
step B, air supply and air tightness test:
step B1, inputting an instruction by the singlechip, controlling the high-pressure air pump (7) and the electromagnetic valve (131) to be powered on and opened simultaneously, supplying air into the air guide pipe (13) by the high-pressure air pump (7) through the electromagnetic valve (131), injecting the air into the butyronitrile gloves through the hollow supporting plugs (11) by the tail ends of the air guide pipes (13), and expanding the butyronitrile gloves in the expansion grooves (12);
step B2, detecting the injected air pressure by the electronic barometer (8) to a proper air pressure value S1, inputting the air pressure to the single chip microcomputer, comparing the single chip microcomputer with an internal preset air pressure value S2, and when S1 is more than S2, controlling the high-pressure air pump (7) and the electromagnetic valve (131) to be closed simultaneously by the single chip microcomputer;
and C: air leakage alarm:
if the air tightness of the nitrile gloves is poor, air is leaked, the air is exhausted through the air holes (91) in the sealing gaskets (9), at the moment, the air pressure value S1 of the electronic barometer (8) is reduced, the detected air pressure value is input into the single chip microcomputer, the single chip microcomputer is compared with the air pressure value S2 preset inside, and when S1 is smaller than 0.01% -0.05% of S2, the single chip microcomputer controls the strobe light (301) to flicker so as to prompt leakage.
10. The airtightness testing method for the airtightness testing device for the nitrile rubber medical gloves according to claim 9, characterized in that: in the step A1, until the power shaft (2) of the hydraulic oil cylinder (4) is completely extended, the singlechip controls the hydraulic pump (6) to stop supplying oil through the hydraulic pump inlet and outlet control circuit; in the step A3, the preset distance L2 between the single chip microcomputer and the inside is smaller than the sum of the two sealing gaskets (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111510870.XA CN114112234A (en) | 2021-12-10 | 2021-12-10 | Airtightness testing device and airtightness testing method for nitrile rubber medical gloves |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111510870.XA CN114112234A (en) | 2021-12-10 | 2021-12-10 | Airtightness testing device and airtightness testing method for nitrile rubber medical gloves |
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| Publication Number | Publication Date |
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| CN114112234A true CN114112234A (en) | 2022-03-01 |
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| CN202111510870.XA Pending CN114112234A (en) | 2021-12-10 | 2021-12-10 | Airtightness testing device and airtightness testing method for nitrile rubber medical gloves |
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