CN103629396A - Positive and negative pressure gas distribution device - Google Patents
Positive and negative pressure gas distribution device Download PDFInfo
- Publication number
- CN103629396A CN103629396A CN201310443933.3A CN201310443933A CN103629396A CN 103629396 A CN103629396 A CN 103629396A CN 201310443933 A CN201310443933 A CN 201310443933A CN 103629396 A CN103629396 A CN 103629396A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- pressure gas
- negative
- annular
- fixed disk
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
- F16K11/085—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
-
- 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
- G01M3/32—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 containers, e.g. radiators
- G01M3/34—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 containers, e.g. radiators by testing the possibility of maintaining the vacuum in containers, e.g. in can-testing machines
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Vacuum Packaging (AREA)
- Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
Abstract
The invention discloses a positive and negative pressure gas distribution device. The positive and negative pressure gas distribution device is characterized in that a shaft type positive pressure gas connector, a disk type negative pressure gas connector and a rotating disk type positive and negative pressure gas distribution device are included; the disk type negative pressure gas connector and the rotating disk type positive and negative pressure gas distribution device are respectively arranged on the shaft type positive pressure gas connector in a sleeved mode, the disk type negative pressure gas connector is placed above the rotating disk type positive and negative pressure gas distribution device, and the disk type negative pressure gas connector is arranged on the shaft type positive pressure gas connector in the mode that the disk type negative pressure gas connector can not rotate; the inner side face of the rotating disk type positive and negative pressure gas distribution device and the outer side face of the shaft type positive pressure gas connector are in sealing rotation fit, and the upper surface of the rotating disk type positive and negative pressure gas distribution device and the lower surface of the disk type negative pressure gas connector are in sealing rotation fit. Thus, the positive and negative pressure gas distribution device can convey positive pressure gas and negative pressure gas at the same time, and accordingly a good basis is laid for high-precision leakage detecting of packaging containers.
Description
Technical field
The present invention relates to a kind of gas distributing device, more particularly, the present invention relates to a kind of positive/negative-pressure gas distributing device.
Background technique
At present, when packaging container is hunted leak, be generally in packaging container, to vacuumize, then by observing the variation of vacuum values in packaging container, thereby judge packaging container, whether leak.
But, there is the shortcoming that testing precision is low in existing packaging container leak hunting method, therefore, the applicant designs the packaging container leak hunting method that a kind of testing precision is high, this high-precision packaging container leak hunting method adopts positive/negative-pressure to act on the interior outer side wall of packaging container simultaneously, at packaging container, forms vacuum outward, adds barotropic gas in packaging container simultaneously, by observing the variation of the outer vacuum values of packaging container, thereby judge packaging container, whether leak again.
Above-mentioned high-precision packaging container leak hunting method needs a kind of negative-pressure gas that can simultaneously align to carry out assigned unit, for this reason, designs a kind of positive/negative-pressure gas distributing device, has become the technical problem that current urgent need solves.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of positive/negative-pressure gas distributing device, and this positive/negative-pressure gas distributing device can be carried barotropic gas and negative-pressure gas simultaneously, thereby hunts leak and have laid a good foundation for the highi degree of accuracy of packaging container.
In order to solve the problems of the technologies described above, the present invention adopts following technological scheme:
A positive/negative-pressure gas distributing device, is characterized in that: comprise shaft type barotropic gas connector, disc type negative-pressure gas connector and rotation plate type positive/negative-pressure gas distributor;
Above-mentioned disc type negative-pressure gas connector and rotation plate type positive/negative-pressure gas distributor are enclosed within respectively on shaft type barotropic gas connector, above-mentioned disc type negative-pressure gas connector be positioned at rotation plate type positive/negative-pressure gas distributor above, above-mentioned disc type negative-pressure gas connector is located on shaft type barotropic gas connector un-rotatably;
The outer side surface of the inner side surface of above-mentioned rotation plate type positive/negative-pressure gas distributor and shaft type barotropic gas connector is rotatably assorted hermetically, and the lower surface of the upper surface of above-mentioned rotation plate type positive/negative-pressure gas distributor and disc type negative-pressure gas connector is rotatably assorted hermetically.
When shaft type barotropic gas connector for example, is connected with pressurized equipment in packaging container (air compressor), because the inner side surface of rotation plate type positive/negative-pressure gas distributor and the outer side surface of shaft type barotropic gas connector are rotatably assorted hermetically, so, the barotropic gas that in packaging container, pressurized equipment produces is transported in packaging container by shaft type barotropic gas connector and rotation plate type positive/negative-pressure gas distributor, thereby makes formation malleation in packaging container;
When disc type negative-pressure gas connector for example, is connected with vaccum-pumping equipment outside packaging container (vacuum pump), because the upper surface of rotation plate type positive/negative-pressure gas distributor and the lower surface of disc type negative-pressure gas connector are rotatably assorted hermetically, so, the outer vaccum-pumping equipment of packaging container is taken the air outside packaging container away by disc type negative-pressure gas connector and rotation plate type positive/negative-pressure gas distributor, thereby makes packaging container form vacuum outward;
Whether like this, barotropic gas and negative-pressure gas just can act on the interior outer side wall of packaging container simultaneously, by observing the variation of the outer vacuum values of packaging container, just can judge packaging container and leak.
Optimal technical scheme as central-axis type barotropic gas connector of the present invention:
Described shaft type barotropic gas connector comprises center air-separating shaft, radial air inlet mouth, axial admission passage, arc gas-entered passageway, arc outlet passageway, axially outlet passageway and air outlet radially;
Above-mentioned radial air inlet mouth and radially air outlet are radially located at respectively on the air-separating shaft of center, above-mentioned axial admission passage and axially outlet passageway are axially located at respectively on the air-separating shaft of center, above-mentioned arc gas-entered passageway and arc outlet passageway are located at independently of each other along same circumferencial direction on the outer side surface of center air-separating shaft, between above-mentioned arc gas-entered passageway and arc outlet passageway, have spacing block;
One end of above-mentioned radial air inlet mouth is communicated with pressurized equipment in packaging container, and the other end of above-mentioned radial air inlet mouth is communicated with arc gas-entered passageway by axial admission passage, and above-mentioned arc gas-entered passageway is communicated with rotation plate type positive/negative-pressure gas distributor;
One end of above-mentioned radially air outlet is in communication with the outside, and radially the other end of air outlet is communicated with arc outlet passageway by axial outlet passageway, and above-mentioned arc outlet passageway is communicated with rotation plate type positive/negative-pressure gas distributor.
In packaging container, radial air inlet mouth, axial admission passage, arc gas-entered passageway and the rotation plate type positive/negative-pressure gas distributor of pressurized equipment by shaft type barotropic gas connector is when being communicated with in packaging container, the barotropic gas that in packaging container, pressurized equipment produces is just input in packaging container by radial air inlet mouth, axial admission passage, arc gas-entered passageway and the rotation plate type positive/negative-pressure gas distributor of shaft type barotropic gas connector, thereby makes formation malleation in packaging container;
Arc outlet passageway by rotation plate type positive/negative-pressure gas distributor and shaft type barotropic gas connector in packaging container, axially outlet passageway, when radially air outlet is in communication with the outside, barotropic gas in packaging container just can be by rotation plate type positive/negative-pressure gas distributor and shaft type barotropic gas connector arc outlet passageway, axially outlet passageway, radially air outlet outputs to the external world, thereby make to recover in packaging container normal pressure.
Optimal technical scheme as disc type negative-pressure gas connector in the present invention:
Described disc type negative-pressure gas connector comprises annular fixed disk, vacuumizes hole, vacuum breaking Kong He oil film seal mechanism;
Above-mentioned annular fixed disk is located on the center air-separating shaft of shaft type barotropic gas connector un-rotatably;
Above-mentionedly vacuumize hole and vacuum breaking hole is located on annular fixed disk respectively, and, above-mentionedly vacuumize hole and vacuum breaking hole is positioned on same circumference; The sense of rotation of rotation plate type positive/negative-pressure gas distributor of take is the place ahead, and above-mentioned vacuum breaking hole is positioned at the place ahead that vacuumizes hole; Above-mentionedly vacuumize upper surface and the lower surface that hole and vacuum breaking hole all connect annular fixed disk;
The above-mentioned position that vacuumizes hole is corresponding with the position of arc gas-entered passageway on the air-separating shaft of center, and above-mentioned vacuum breaking hole is positioned at the place ahead of arc outlet passageway on the air-separating shaft of center; The above-mentioned hole that vacuumizes is communicated with vaccum-pumping equipment outside packaging container on the upper surface of annular fixed disk, and above-mentioned vacuum breaking hole is in communication with the outside on the upper surface of annular fixed disk;
Above-mentioned oil film seal mechanism is located on the lower surface of annular fixed disk, and above-mentioned oil film seal mechanism is between annular fixed disk and rotation plate type positive/negative-pressure gas distributor.
Optimal technical scheme as oil film seal mechanism in the present invention:
Described oil film seal mechanism comprises the first annular oil groove, the second annular oil groove, filler opening, oil outlet and the middle oil groove that is connected;
Above-mentioned the first annular oil groove is located on the inner periphery of its lower surface of annular fixed disk;
Above-mentioned the second annular oil groove is located on the outer periphery of its lower surface of annular fixed disk;
Above-mentioned filler opening is located on the first annular oil groove;
Above-mentioned oil outlet is located on the second annular oil groove;
In the middle of above-mentioned, connect oil groove and radially establish on the lower surface of annular fixed disk, above-mentioned middle one end that connects oil groove is communicated with the first annular oil groove, and the above-mentioned middle the other end that connects oil groove is communicated with the second annular oil groove.
Because the first annular oil groove is located on the inner periphery of its lower surface of annular fixed disk, so above-mentioned the first annular oil groove forms annular oil film seal ring on the inner periphery of its lower surface of annular fixed disk;
Because the second annular oil groove is located on the outer periphery of its lower surface of annular fixed disk, so above-mentioned the second annular oil groove forms an outer ring oil film seal ring on the outer periphery of its lower surface of annular fixed disk;
Therefore, under the seal action of interior annular oil film seal ring and outer ring oil film seal ring, the upper surface of the lower surface of above-mentioned annular fixed disk and rotation plate type positive/negative-pressure gas distributor is in sealing state, thereby above-mentioned oil film seal mechanism has good sealability.
Again because filler opening is located on the first annular oil groove, oil outlet is located on the second annular oil groove, the middle oil groove that connects is radially established on the lower surface of annular fixed disk, and middle one end that connects oil groove is communicated with the first annular oil groove, and the middle the other end that connects oil groove is communicated with the second annular oil groove;
So, fluid in external fuel tank is from filler opening enters, fluid enters in the first annular oil groove, fluid in the first annular oil groove enters in the second annular oil groove through the middle oil groove that connects again, fluid in the second annular oil groove again from oil outlet out and flow in external fuel tank, thereby form an oil circulation loop, guaranteed to there is sufficient fluid in the first annular oil groove and the second annular oil groove, thereby make the lower surface of annular fixed disk and the upper surface of rotation plate type positive/negative-pressure gas distributor can be for a long time in sealing state, therefore, the good sealing effect of above-mentioned oil film seal mechanism,
Simultaneously, interior annular oil film seal ring and outer ring oil film seal ring can also make to have good greasy property between the lower surface of annular fixed disk and the upper surface of rotation plate type positive/negative-pressure gas distributor, thereby reduce the sliding friction between the lower surface of annular fixed disk and the upper surface of rotation plate type positive/negative-pressure gas distributor, therefore, good sealing effect, the long service life of above-mentioned oil film seal mechanism.
Optimal technical scheme as transfer disc type positive/negative-pressure gas distributor of the present invention:
Described rotation plate type positive/negative-pressure gas distributor comprises annular rolling disc, multichannel barotropic gas passage and multichannel negative-pressure gas passage;
Above-mentioned annular rolling disc is enclosed within on the center air-separating shaft of shaft type barotropic gas connector, and the outer side surface of the inner side surface of above-mentioned annular rolling disc and center air-separating shaft is rotatably assorted hermetically;
Above-mentioned annular rolling disc be positioned at annular fixed disk below, the upper surface of above-mentioned annular rolling disc and the lower surface of annular fixed disk are rotatably assorted hermetically;
Above-mentioned multichannel barotropic gas passage is radially located on annular rolling disc, and above-mentioned multichannel barotropic gas passage arranges equably;
The inner of above-mentioned barotropic gas passage is positioned on the inner side surface of annular rolling disc, in process at the inner side surface of annular rolling disc with respect to the outer side surface sealed rotational of center air-separating shaft, above-mentioned barotropic gas passage inner or be communicated with arc gas-entered passageway or seal and be slidably matched or be communicated with arc outlet passageway with spacing block, the outer end of above-mentioned barotropic gas passage is positioned on the outer side surface of annular rolling disc and is communicated with packaging container;
Above-mentioned multichannel negative-pressure gas passage is located on annular rolling disc equably along same circumferencial direction, one end of above-mentioned negative-pressure gas passage be positioned on the upper surface of annular rolling disc and with annular fixed disk on vacuumize hole and vacuum breaking hole is on same circumference; The other end of above-mentioned negative-pressure gas passage is positioned on the outer side surface of annular rolling disc and is communicated with outward with packaging container.
When the inner side surface of annular rolling disc rotates one week hermetically with respect to the outer side surface of center air-separating shaft, because barotropic gas passage is radially located on annular rolling disc, the inner of barotropic gas passage is positioned on the inner side surface of annular rolling disc, so the inner of barotropic gas passage is communicated with arc gas-entered passageway successively, is slidably matched with spacing block sealing, is communicated with arc outlet passageway, is slidably matched with spacing block sealing;
When the inner of barotropic gas passage is communicated with arc gas-entered passageway, in packaging container, pressurized equipment is communicated with in packaging container by the barotropic gas passage of radial air inlet mouth, axial admission passage, arc gas-entered passageway and the rotation plate type positive/negative-pressure gas distributor of shaft type barotropic gas connector, the barotropic gas passage of radial air inlet mouth, axial admission passage, arc gas-entered passageway and rotation plate type positive/negative-pressure gas distributor that like this, pressurized equipment just can be by shaft type barotropic gas connector in packaging container is transported to barotropic gas in packaging container;
When the inner of barotropic gas passage and spacing block sealing are slidably matched, in packaging container, pressurized equipment just can stop carrying barotropic gas in packaging container, thereby makes to form in packaging container constant air pressure;
When the inner of barotropic gas passage is communicated with arc outlet passageway, barotropic gas in packaging container just passes through the barotropic gas passage of rotation plate type positive/negative-pressure gas distributor and the arc outlet passageway of shaft type barotropic gas connector, axial outlet passageway successively, radially air outlet is discharged to the external world, just recovers normal pressure in packaging container.
When the upper surface of annular rolling disc rotates one week hermetically with respect to the lower surface of annular fixed disk, due to one end of negative-pressure gas passage be positioned on the upper surface of annular rolling disc and with annular fixed disk on vacuumize hole and vacuum breaking hole is on same circumference, so, above-mentioned negative-pressure gas passage successively with on annular fixed disk vacuumize hole and vacuum breaking hole is communicated with;
Negative-pressure gas passage on annular rolling disc is during with vacuumizing hole and be communicated with on annular fixed disk, and the outer vaccum-pumping equipment of packaging container is evacuated packaging container outward by the negative-pressure gas passage on annular rolling disc and the hole that vacuumizes on annular fixed disk;
When the negative-pressure gas passage on annular rolling disc is communicated with the vacuum breaking hole on annular fixed disk, packaging container is outer to be in communication with the outside by the negative-pressure gas passage on annular rolling disc and the vacuum breaking hole on annular fixed disk, extraneous gas just can enter into outside packaging container, thereby makes packaging container recover normal pressure outward.
For make the upper surface of annular rolling disc and the lower surface of annular fixed disk better sealed rotational coordinate, between the upper surface of described annular fixed disk and center air-separating shaft, be provided with a hold-down mechanism, above-mentioned hold-down mechanism comprise that connecting flange, at least two sleeve-copper posts hold down assembly and at least two hold down assembly;
Above-mentioned connecting flange is fixedly located on the air-separating shaft of center coaxially;
Above-mentioned sleeve-copper post holds down assembly and comprises clamp sleeve and compress copper post, and above-mentioned compression copper post is fixedly located on the upper surface of annular fixed disk, and above-mentioned clamp sleeve is fixedly located on connecting flange, and the lower end of above-mentioned clamp sleeve is enclosed within and compresses on copper post;
Above-mentioned holding down assembly comprises Compress Spring, spring pressure adjustable lever and locking nut, the bottom of above-mentioned spring pressure adjustable lever is stretched in clamp sleeve, stretch out outside clamp sleeve on the top of above-mentioned spring pressure adjustable lever, and above-mentioned spring pressure adjustable lever is connected with clamp sleeve by screw thread;
Above-mentioned locking nut is arranged on spring pressure adjustable lever and is positioned at the outside of clamp sleeve;
Above-mentioned Compress Spring is located in clamp sleeve, and the lower end of above-mentioned Compress Spring joins with compression copper post, and the lower end of the upper end of above-mentioned Compress Spring and spring pressure adjustable lever joins.
By clamp sleeve lower end and the cover stressed joint that compresses copper post, can prevent that annular fixed disk from rotating, and, Compress Spring in clamp sleeve can make the lower surface of annular fixed disk be pressed on the upper surface of annular rolling disc, therefore, in the process of rotating with respect to annular fixed disk at annular rolling disc, the upper surface of annular rolling disc and the lower surface of annular fixed disk better sealed rotational coordinate;
Simultaneously, by torsional spring pressure adjusting lever, can the stretch into amount of control spring pressure adjusting lever in clamp sleeve, thereby control the decrement of Compress Spring, so just, can adjust the compression degree between annular fixed disk and annular rolling disc, thereby make to there is good sealability between the lower surface of annular fixed disk and the upper surface of annular rolling disc; Regulate after the pressure of Compress Spring, by locking nut, spring pressure adjustable lever is locked on clamp sleeve.
The present invention's beneficial effect is against existing technologies:
Because this positive/negative-pressure gas distributing device comprises shaft type barotropic gas connector, disc type negative-pressure gas connector and rotation plate type positive/negative-pressure gas distributor; Above-mentioned disc type negative-pressure gas connector and rotation plate type positive/negative-pressure gas distributor are enclosed within respectively on shaft type barotropic gas connector, above-mentioned disc type negative-pressure gas connector be positioned at rotation plate type positive/negative-pressure gas distributor above, above-mentioned disc type negative-pressure gas connector is located on shaft type barotropic gas connector un-rotatably; The outer side surface of the inner side surface of above-mentioned rotation plate type positive/negative-pressure gas distributor and shaft type barotropic gas connector is rotatably assorted hermetically, and the lower surface of the upper surface of above-mentioned rotation plate type positive/negative-pressure gas distributor and disc type negative-pressure gas connector is rotatably assorted hermetically; So this positive/negative-pressure gas distributing device can be carried barotropic gas and negative-pressure gas simultaneously, thereby hunt leak and have laid a good foundation for the highi degree of accuracy of packaging container.
Meanwhile, this positive/negative-pressure gas distributing device also have simple in structure, reasonable in design, cost of production is low, operation and maintenance is convenient, be easy to the advantages such as popularization.
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
accompanying drawing explanation
Fig. 1 is the structural representation of the preferred embodiment of the present invention;
Fig. 2 is the enlarged view of preferred embodiment of the present invention central-axis type barotropic gas connector;
Fig. 3 is that A-A in Fig. 2 is to sectional view;
Fig. 4 is that B-B in Fig. 1 is to profile;
Fig. 5 is enlarged view when disc type negative-pressure gas connector is separated with rotation plate type positive/negative-pressure gas distributor in the preferred embodiment of the present invention;
Fig. 6 is the enlarged view after the also upset separated with rotation plate type positive/negative-pressure gas distributor of disc type negative-pressure gas connector in the preferred embodiment of the present invention.
embodiment
As shown in Figures 1 to 6, the positive/negative-pressure gas distributing device in this preferred embodiment, comprises shaft type barotropic gas connector 1, disc type negative-pressure gas connector 2 and rotation plate type positive/negative-pressure gas distributor 3.
As shown in Figures 1 to 4, above-mentioned shaft type barotropic gas connector 1 comprises center air-separating shaft 10, radial air inlet mouth 11, axial admission passage 12, arc gas-entered passageway 13, arc outlet passageway 14, axially outlet passageway 15 and air outlet 16 radially;
Above-mentioned radial air inlet mouth 11 and radially air outlet 16 are radially located at respectively on center air-separating shaft 10, above-mentioned axial admission passage 12 and axially outlet passageway 15 are axially located at respectively on center air-separating shaft 10, above-mentioned arc gas-entered passageway 13 and arc outlet passageway 14 are located at independently of each other along same circumferencial direction on the outer side surface 101 of center air-separating shaft 10, have spacing block 17,18 between above-mentioned arc gas-entered passageway 13 and arc outlet passageway 14;
Pressurized equipment 4(air compressor for example in one end of above-mentioned radial air inlet mouth 11 and packaging container) be communicated with, the other end of above-mentioned radial air inlet mouth 11 is communicated with arc gas-entered passageway 13 by axial admission passage 12, and above-mentioned arc gas-entered passageway 13 is communicated with rotation plate type positive/negative-pressure gas distributor 3;
One end of above-mentioned radially air outlet 16 is in communication with the outside, and the other end of above-mentioned radially air outlet 16 is communicated with arc outlet passageway 14 by axial outlet passageway 15, and above-mentioned arc outlet passageway 14 is communicated with rotation plate type positive/negative-pressure gas distributor 3.
As shown in Fig. 1, Fig. 5 and Fig. 6, above-mentioned disc type negative-pressure gas connector 2 comprises annular fixed disk 20, vacuumizes hole 21, vacuum breaking Kong22He oil film seal mechanism 23;
Above-mentioned annular fixed disk 20 is located on center air-separating shaft 10 un-rotatably;
Above-mentionedly vacuumize hole 21 and vacuum breaking hole 22 is located at respectively on annular fixed disk 20, and, above-mentionedly vacuumize hole 21 and vacuum breaking hole 22 is positioned on same circumference; The sense of rotation of rotation plate type positive/negative-pressure gas distributor 3 of take is the place ahead, and above-mentioned vacuum breaking hole 22 is positioned at the place ahead that vacuumizes hole 21; Above-mentionedly vacuumize upper surface 201 and the lower surface 202 that hole 21 and vacuum breaking hole 22 all connect annular fixed disk 20;
The above-mentioned position that vacuumizes hole 21 is corresponding with the position of arc gas-entered passageway 13 on center air-separating shaft 10, and above-mentioned vacuum breaking hole 22 is positioned at the place ahead of arc outlet passageway 14 on center air-separating shaft 10; Above-mentioned vacuumize hole 21 on the upper surface 201 of annular fixed disk 20 with the vacuum pump for example of vaccum-pumping equipment 5(outside packaging container) be communicated with, above-mentioned vacuum breaking hole 22 201 is in communication with the outside on the upper surface of annular fixed disk 20;
Above-mentioned oil film seal mechanism 23 is located on the lower surface of annular fixed disk 20, and above-mentioned oil film seal mechanism 23 is between annular fixed disk 20 and rotation plate type positive/negative-pressure gas distributor 3;
Above-mentioned oil film seal mechanism 23 comprises the first annular oil groove 231, the second annular oil groove 232, filler opening 233, oil outlet 234 and the middle oil groove 235 that is connected;
Above-mentioned the first annular oil groove 231 is located on the inner periphery 203 of annular fixed disk 20 its lower surfaces 202;
Above-mentioned the second annular oil groove 232 is located on the outer periphery 204 of annular fixed disk 20 its lower surfaces 202;
Above-mentioned filler opening 233 is located on the first annular oil groove 231;
Above-mentioned oil outlet 234 is located on the second annular oil groove 232;
In the middle of above-mentioned, connect oil groove 235 and radially establish on the lower surface 202 of annular fixed disk 20, above-mentioned middle one end that connects oil groove 235 is communicated with the first annular oil groove 231, and the above-mentioned middle the other end that connects oil groove 235 is communicated with the second annular oil groove 232.
As shown in Fig. 1, Fig. 4, Fig. 5 and Fig. 6, above-mentioned rotation plate type positive/negative-pressure gas distributor 3 comprises annular rolling disc 30, multichannel barotropic gas passage 31 and multichannel negative-pressure gas passage 32;
Above-mentioned annular rolling disc 30 is enclosed within on the center air-separating shaft 10 of shaft type barotropic gas connector 1, and the outer side surface 101 of the inner side surface 301Yu center air-separating shaft 10 of above-mentioned annular rolling disc 30 is rotatably assorted hermetically;
Above-mentioned annular rolling disc 30 be positioned at annular fixed disk 20 below, the upper surface of above-mentioned annular rolling disc 30 303 is rotatably assorted hermetically with the lower surface 202 of annular fixed disk 20;
Above-mentioned multichannel barotropic gas passage 31 is radially located on annular rolling disc 30, and above-mentioned multichannel barotropic gas passage 31 arranges equably; The inner of above-mentioned barotropic gas passage 31 is positioned on the inner side surface 301 of annular rolling disc 30, in the process of outer side surface 101 sealed rotational of the inner side surface 301Yu center of annular rolling disc 30 air-separating shaft 10, above-mentioned barotropic gas passage 31 inner or be communicated with arc gas-entered passageway 13 or be slidably matched with spacing block 17 sealings or be communicated with arc outlet passageway 14 or seal and be slidably matched with spacing block 18, the outer end of above-mentioned barotropic gas passage 31 is positioned on the outer side surface 302 of annular rolling disc 30 and is communicated with packaging container;
Above-mentioned multichannel negative-pressure gas passage 32 is located on annular rolling disc 30 equably along same circumferencial direction, one end of above-mentioned negative-pressure gas passage 32 be positioned on the upper surface 303 of annular rolling disc 30 and with annular fixed disk 20 on vacuumize hole 21 and vacuum breaking hole 22 is on same circumference; The other end of above-mentioned negative-pressure gas passage 32 is positioned on the outer side surface 302 of annular rolling disc 30 and is communicated with outward with packaging container.
For make the upper surface 303 of annular rolling disc 30 and the lower surface 202 of annular fixed disk 20 better sealed rotational coordinate, between the upper surface 201Yu center air-separating shaft 10 of above-mentioned annular fixed disk 20, be provided with a hold-down mechanism 6;
As shown in Figure 1 and Figure 5, above-mentioned hold-down mechanism 6 comprise that connecting flange 60, two sleeve-copper posts hold down assembly and two hold down assembly, above-mentioned sleeve-copper post holds down assembly and comprises clamp sleeve 61 and compress copper post 62, and above-mentioned holding down assembly comprises Compress Spring 63, spring pressure adjustable lever 64 and locking nut 65;
Above-mentioned connecting flange 60 is fixedly located on center air-separating shaft 10 coaxially;
Above-mentioned compression copper post 62 is fixedly located on the upper surface 201 of annular fixed disk 20, and above-mentioned clamp sleeve 61 is fixedly located on connecting flange 60, and the lower end of above-mentioned clamp sleeve 61 is enclosed within and compresses on copper post 62;
The bottom of above-mentioned spring pressure adjustable lever 64 is stretched in clamp sleeve 61, and stretch out outside clamp sleeve 61 on the top of above-mentioned spring pressure adjustable lever 64, and above-mentioned spring pressure adjustable lever 64 is connected with clamp sleeve 61 by screw thread;
Above-mentioned locking nut 65 is arranged on spring pressure adjustable lever 64 and is positioned at the outside of clamp sleeve 61;
Above-mentioned Compress Spring 63 is located in clamp sleeve 61, and the lower end of above-mentioned Compress Spring 63 joins with compression copper post 62, and the lower end of the upper end of above-mentioned Compress Spring 63 and spring pressure adjustable lever 64 joins.
Below the working procedure of this positive/negative-pressure gas distributing device is at length introduced:
As shown in Figures 1 to 6, when annular rolling disc 30 rotates, because annular fixed disk 20 is located on center air-separating shaft 10 un-rotatably by hold-down mechanism 6, annular rolling disc 30 be positioned at annular fixed disk 20 below, so, the inner side surface 301 of annular rolling disc 30 just can rotate hermetically with respect to the outer side surface 101 of center air-separating shaft 10, and the upper surface 303 of annular rolling disc 30 just can rotate hermetically with respect to the lower surface 202 of annular fixed disk 20;
Because the first annular oil groove 231 forms annular oil film seal ring on the inner periphery 203 of annular fixed disk 20 its lower surfaces 202, the second annular oil groove 232 forms an outer ring oil film seal ring on the outer periphery 204 of annular fixed disk 20 its lower surfaces 202, so, under the seal action of interior annular oil film seal ring and outer ring oil film seal ring, the lower surface 202 of above-mentioned annular fixed disk 20 and the upper surface 303 of annular rolling disc 30 are in sealing state, and, fluid in external fuel tank is from filler opening 233 enters, fluid enters in the first annular oil groove 231, fluid in the first annular oil groove 231 enters in the second annular oil groove 232 through the middle oil groove 235 that connects again, fluid in the second annular oil groove 232 again from oil outlet 234 out and flow in external fuel tank, thereby form an oil circulation loop, so just, guaranteed to there is sufficient fluid in the first annular oil groove 231 and the second annular oil groove 232, thereby make the lower surface 203 of annular fixed disk 20 and the upper surface 303 of annular rolling disc 30 for a long time in sealing and lubricating status,
When annular rolling disc 30 rotates one week hermetically with respect to center air-separating shaft 10 and annular fixed disk 20 in the direction of the clock, the inner of barotropic gas passage 31 on above-mentioned annular rolling disc 30 is communicated with arc gas-entered passageway 13 successively, be slidably matched with spacing block 17 sealings, is communicated with arc outlet passageway 14, and spacing block 18 seal and be slidably matched, the negative-pressure gas passage 32 on above-mentioned annular rolling disc 30 successively with on annular fixed disk 20 vacuumize hole 21, vacuum breaking hole 21 is communicated with;
Corresponding with the position of arc gas-entered passageway 13 on center air-separating shaft 10 owing to vacuumizing the position in hole 21 on annular fixed disk 20, so, when the barotropic gas passage 31 on annular rolling disc 30 is communicated with arc gas-entered passageway 13, synchronously, the negative-pressure gas passage 32 of annular on rolling disc 30 also with vacuumize hole 21 and be communicated with, like this, in packaging container, pressurized equipment 4 is by the radial air inlet mouth 11 on center air-separating shaft 10, axial admission passage 12, barotropic gas passage 31 on arc gas-entered passageway 13 and annular rolling disc 30 is transported to barotropic gas in packaging container, meanwhile, the outer vaccum-pumping equipment 5 of packaging container is evacuated packaging container outward by the negative-pressure gas passage 32 vacuumizing on hole 21 and annular rolling disc 30 on annular fixed disk 20, like this, the negative pressure that the outer vaccum-pumping equipment 5 of the malleation that in packaging container, pressurized equipment 4 produces and packaging container produces just acts on the interior outer side wall of packaging container simultaneously,
When barotropic gas passage 31 its inners on annular rolling disc 30 are slidably matched with close 17 envelopes of spacing block, in packaging container, pressurized equipment 4 just can stop carrying barotropic gas in packaging container, thereby makes the constant air pressure of formation in packaging container;
Because vacuum breaking hole 22 is positioned at the place ahead of arc outlet passageway 14 on center air-separating shaft 10, so, before negative-pressure gas passage 32 on annular rolling disc 30 turns to the vacuum breaking hole 22 on annular fixed disk 20, arc outlet passageway 14 on barotropic gas passage 31Bian Huiyu center air-separating shaft 10 on annular rolling disc 30 is communicated with, like this, barotropic gas in packaging container just can be successively through the arc outlet passageway 14 on the barotropic gas passage 31He center air-separating shaft 10 on annular rolling disc 30, axial outlet passageway 15, air outlet 16 and be discharged to the external world radially, thereby make recovery normal pressure in packaging container,
When the negative-pressure gas passage 32 on annular rolling disc 30 turns on the vacuum breaking hole 22 on annular fixed disk 20, packaging container is outer to be in communication with the outside by negative-pressure gas passage 32 and vacuum breaking hole 22, like this, extraneous gas just can enter into outside packaging container, thereby makes packaging container recover normal pressure outward;
Like this, when this positive/negative-pressure gas distributing device has just been realized barotropic gas and negative-pressure gas, carry, thereby hunt leak and have laid a good foundation for the highi degree of accuracy of packaging container.
In addition, by clamp sleeve 61 lower ends and the cover stressed joint that compresses copper post 62, can prevent that annular fixed disk 20 from rotating, and, Compress Spring 63 in clamp sleeve 61 can make the lower surface 202 of annular fixed disk 20 be pressed on the upper surface 303 of annular rolling disc 30, therefore,, in the process of rotating with respect to annular fixed disk 20 at annular rolling disc 30, the upper surface 303 of annular rolling disc 30 and the lower surface 202 of annular fixed disk 20 better sealed rotational coordinate;
And, by torsional spring pressure adjusting lever 64, can the stretch into amount of control spring pressure adjusting lever 64 in clamp sleeve 61, thereby control the decrement of Compress Spring 63, so just, can adjust the compression degree between annular fixed disk 20 and annular rolling disc 30, thereby make to there is good sealability between the lower surface 202 of annular fixed disk 20 and the upper surface 303 of annular rolling disc 30; Regulate after the pressure of Compress Spring 63, by locking nut 65, spring pressure adjustable lever 64 is locked on clamp sleeve 61.
The flow direction of the direction indication barotropic gas of arrow in Fig. 2.
The sense of rotation of the direction indication of arrow annular rolling disc 30 in Fig. 4, Fig. 5 and Fig. 6.
The content of above embodiment is only the preferred embodiments of the present invention, and above preferred embodiment is not used for limiting practical range of the present invention; Every various equivalents of making according to the protection domain of its claim of the present invention, are all covered by the protection domain of its claim of the present invention.
Claims (6)
1. a positive/negative-pressure gas distributing device, is characterized in that: comprise shaft type barotropic gas connector, disc type negative-pressure gas connector and rotation plate type positive/negative-pressure gas distributor;
Above-mentioned disc type negative-pressure gas connector and rotation plate type positive/negative-pressure gas distributor are enclosed within respectively on shaft type barotropic gas connector, above-mentioned disc type negative-pressure gas connector be positioned at rotation plate type positive/negative-pressure gas distributor above, above-mentioned disc type negative-pressure gas connector is located on shaft type barotropic gas connector un-rotatably;
The outer side surface of the inner side surface of above-mentioned rotation plate type positive/negative-pressure gas distributor and shaft type barotropic gas connector is rotatably assorted hermetically, and the lower surface of the upper surface of above-mentioned rotation plate type positive/negative-pressure gas distributor and disc type negative-pressure gas connector is rotatably assorted hermetically.
2. positive/negative-pressure gas distributing device according to claim 1, is characterized in that: described shaft type barotropic gas connector comprises center air-separating shaft, radial air inlet mouth, axial admission passage, arc gas-entered passageway, arc outlet passageway, axially outlet passageway and air outlet radially;
Above-mentioned radial air inlet mouth and radially air outlet are radially located at respectively on the air-separating shaft of center, above-mentioned axial admission passage and axially outlet passageway are axially located at respectively on the air-separating shaft of center, above-mentioned arc gas-entered passageway and arc outlet passageway are located at independently of each other along same circumferencial direction on the outer side surface of center air-separating shaft, between above-mentioned arc gas-entered passageway and arc outlet passageway, have spacing block;
One end of above-mentioned radial air inlet mouth is communicated with pressurized equipment in packaging container, and the other end of above-mentioned radial air inlet mouth is communicated with arc gas-entered passageway by axial admission passage, and above-mentioned arc gas-entered passageway is communicated with rotation plate type positive/negative-pressure gas distributor;
One end of above-mentioned radially air outlet is in communication with the outside, and radially the other end of air outlet is communicated with arc outlet passageway by axial outlet passageway, and above-mentioned arc outlet passageway is communicated with rotation plate type positive/negative-pressure gas distributor.
3. positive/negative-pressure gas distributing device according to claim 2, is characterized in that: described disc type negative-pressure gas connector comprises annular fixed disk, vacuumizes hole, vacuum breaking Kong He oil film seal mechanism;
Above-mentioned annular fixed disk is located on the center air-separating shaft of shaft type barotropic gas connector un-rotatably;
Above-mentionedly vacuumize hole and vacuum breaking hole is located on annular fixed disk respectively, and, above-mentionedly vacuumize hole and vacuum breaking hole is positioned on same circumference; The sense of rotation of rotation plate type positive/negative-pressure gas distributor of take is the place ahead, and above-mentioned vacuum breaking hole is positioned at the place ahead that vacuumizes hole; Above-mentionedly vacuumize upper surface and the lower surface that hole and vacuum breaking hole all connect annular fixed disk;
The above-mentioned position that vacuumizes hole is corresponding with the position of arc gas-entered passageway on the air-separating shaft of center, and above-mentioned vacuum breaking hole is positioned at the place ahead of arc outlet passageway on the air-separating shaft of center; The above-mentioned hole that vacuumizes is communicated with vaccum-pumping equipment outside packaging container on the upper surface of annular fixed disk, and above-mentioned vacuum breaking hole is in communication with the outside on the upper surface of annular fixed disk;
Above-mentioned oil film seal mechanism is located on the lower surface of annular fixed disk, and above-mentioned oil film seal mechanism is between annular fixed disk and rotation plate type positive/negative-pressure gas distributor.
4. positive/negative-pressure gas distributing device according to claim 3, is characterized in that: described oil film seal mechanism comprises the first annular oil groove, the second annular oil groove, filler opening, oil outlet and the middle oil groove that is connected;
Above-mentioned the first annular oil groove is located on the inner periphery of its lower surface of annular fixed disk;
Above-mentioned the second annular oil groove is located on the outer periphery of its lower surface of annular fixed disk;
Above-mentioned filler opening is located on the first annular oil groove;
Above-mentioned oil outlet is located on the second annular oil groove;
In the middle of above-mentioned, connect oil groove and radially establish on the lower surface of annular fixed disk, above-mentioned middle one end that connects oil groove is communicated with the first annular oil groove, and the above-mentioned middle the other end that connects oil groove is communicated with the second annular oil groove.
5. positive/negative-pressure gas distributing device according to claim 3, is characterized in that: described rotation plate type positive/negative-pressure gas distributor comprises annular rolling disc, multichannel barotropic gas passage and multichannel negative-pressure gas passage;
Above-mentioned annular rolling disc is enclosed within on the center air-separating shaft of shaft type barotropic gas connector, and the outer side surface of the inner side surface of above-mentioned annular rolling disc and center air-separating shaft is rotatably assorted hermetically;
Above-mentioned annular rolling disc be positioned at annular fixed disk below, the upper surface of above-mentioned annular rolling disc and the lower surface of annular fixed disk are rotatably assorted hermetically;
Above-mentioned multichannel barotropic gas passage is radially located on annular rolling disc, and above-mentioned multichannel barotropic gas passage arranges equably;
The inner of above-mentioned barotropic gas passage is positioned on the inner side surface of annular rolling disc, in process at the inner side surface of annular rolling disc with respect to the outer side surface sealed rotational of center air-separating shaft, above-mentioned barotropic gas passage inner or be communicated with arc gas-entered passageway or seal and be slidably matched or be communicated with arc outlet passageway with spacing block, the outer end of above-mentioned barotropic gas passage is positioned on the outer side surface of annular rolling disc and is communicated with packaging container;
Above-mentioned multichannel negative-pressure gas passage is located on annular rolling disc equably along same circumferencial direction, one end of above-mentioned negative-pressure gas passage be positioned on the upper surface of annular rolling disc and with annular fixed disk on vacuumize hole and vacuum breaking hole is on same circumference; The other end of above-mentioned negative-pressure gas passage is positioned on the outer side surface of annular rolling disc and is communicated with outward with packaging container.
6. positive/negative-pressure gas distributing device according to claim 3, it is characterized in that: between the upper surface of described annular fixed disk and center air-separating shaft, be provided with a hold-down mechanism, above-mentioned hold-down mechanism comprise that connecting flange, at least two sleeve-copper posts hold down assembly and at least two hold down assembly;
Above-mentioned connecting flange is fixedly located on the air-separating shaft of center coaxially;
Above-mentioned sleeve-copper post holds down assembly and comprises clamp sleeve and compress copper post, and above-mentioned compression copper post is fixedly located on the upper surface of annular fixed disk, and above-mentioned clamp sleeve is fixedly located on connecting flange, and the lower end of above-mentioned clamp sleeve is enclosed within and compresses on copper post;
Above-mentioned holding down assembly comprises Compress Spring, spring pressure adjustable lever and locking nut, the bottom of above-mentioned spring pressure adjustable lever is stretched in clamp sleeve, stretch out outside clamp sleeve on the top of above-mentioned spring pressure adjustable lever, and above-mentioned spring pressure adjustable lever is connected with clamp sleeve by screw thread;
Above-mentioned locking nut is arranged on spring pressure adjustable lever and is positioned at the outside of clamp sleeve;
Above-mentioned Compress Spring is located in clamp sleeve, and the lower end of above-mentioned Compress Spring joins with compression copper post, and the lower end of the upper end of above-mentioned Compress Spring and spring pressure adjustable lever joins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310443933.3A CN103629396B (en) | 2013-09-26 | 2013-09-26 | Positive/negative-pressure gas distributing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310443933.3A CN103629396B (en) | 2013-09-26 | 2013-09-26 | Positive/negative-pressure gas distributing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103629396A true CN103629396A (en) | 2014-03-12 |
| CN103629396B CN103629396B (en) | 2016-01-13 |
Family
ID=50210733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310443933.3A Active CN103629396B (en) | 2013-09-26 | 2013-09-26 | Positive/negative-pressure gas distributing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103629396B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401531A (en) * | 2014-09-29 | 2015-03-11 | 东莞市永铠自动化科技有限公司 | High and low pressure vacuum distribution method and structure of high and low pressure vacuum distribution pipe |
| CN106537075A (en) * | 2014-05-21 | 2017-03-22 | 格伦可科技私人有限公司 | Method and arrangement for preventing gas from leaving an opening of a vessel |
| CN110102518A (en) * | 2019-05-20 | 2019-08-09 | 武汉宜贝思智能有限公司 | A kind of clearance-type positive/negative-pressure valve actuating mechanism |
| CN111169210A (en) * | 2020-03-08 | 2020-05-19 | 周义 | Follow-up moving cutter holds fixed device that processes sheet material |
| CN115290262A (en) * | 2022-09-30 | 2022-11-04 | 地立(苏州)智能装备有限公司 | Filling production line gas tightness detection device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1832062A (en) * | 1928-04-26 | 1931-11-17 | Andersonbarngrover Mfg Co | Leak detector for cans in cartridges |
| GB452428A (en) * | 1935-02-19 | 1936-08-19 | Continental Can Co | Improvements in or relating to method and apparatus for detecting leaks in cans |
| CN101430297A (en) * | 2008-12-18 | 2009-05-13 | 中国大冢制药有限公司 | Electrical conductance type plastic infusion bottle leak detection machine |
| CN102785797A (en) * | 2012-08-16 | 2012-11-21 | 汕头市新青罐机有限公司 | Rotating disc type leak detection machine for packaging bottle |
| CN202703994U (en) * | 2012-08-16 | 2013-01-30 | 汕头市新青罐机有限公司 | Rotary disc type gas distributor |
| CN203477455U (en) * | 2013-09-26 | 2014-03-12 | 汕头市新青罐机有限公司 | Positive pressure gas and negative pressure gas distributing device |
-
2013
- 2013-09-26 CN CN201310443933.3A patent/CN103629396B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1832062A (en) * | 1928-04-26 | 1931-11-17 | Andersonbarngrover Mfg Co | Leak detector for cans in cartridges |
| GB452428A (en) * | 1935-02-19 | 1936-08-19 | Continental Can Co | Improvements in or relating to method and apparatus for detecting leaks in cans |
| CN101430297A (en) * | 2008-12-18 | 2009-05-13 | 中国大冢制药有限公司 | Electrical conductance type plastic infusion bottle leak detection machine |
| CN102785797A (en) * | 2012-08-16 | 2012-11-21 | 汕头市新青罐机有限公司 | Rotating disc type leak detection machine for packaging bottle |
| CN202703994U (en) * | 2012-08-16 | 2013-01-30 | 汕头市新青罐机有限公司 | Rotary disc type gas distributor |
| CN203477455U (en) * | 2013-09-26 | 2014-03-12 | 汕头市新青罐机有限公司 | Positive pressure gas and negative pressure gas distributing device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106537075A (en) * | 2014-05-21 | 2017-03-22 | 格伦可科技私人有限公司 | Method and arrangement for preventing gas from leaving an opening of a vessel |
| CN106537075B (en) * | 2014-05-21 | 2019-12-10 | 格伦可科技私人有限公司 | Method and device for preventing gas from leaving container opening |
| CN104401531A (en) * | 2014-09-29 | 2015-03-11 | 东莞市永铠自动化科技有限公司 | High and low pressure vacuum distribution method and structure of high and low pressure vacuum distribution pipe |
| CN110102518A (en) * | 2019-05-20 | 2019-08-09 | 武汉宜贝思智能有限公司 | A kind of clearance-type positive/negative-pressure valve actuating mechanism |
| CN111169210A (en) * | 2020-03-08 | 2020-05-19 | 周义 | Follow-up moving cutter holds fixed device that processes sheet material |
| CN115290262A (en) * | 2022-09-30 | 2022-11-04 | 地立(苏州)智能装备有限公司 | Filling production line gas tightness detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103629396B (en) | 2016-01-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103629396B (en) | Positive/negative-pressure gas distributing device | |
| CN105675231B (en) | A kind of negative-pressure sealing detection device | |
| CN106986294B (en) | A kind of efficient filling apparatus for liquid product production | |
| CN101520383B (en) | System for quantificationally collecting trace gas in rock group inclusion and use method thereof | |
| CN103630308B (en) | Packing container leak tester | |
| CN102785797B (en) | Rotating disc type leak detection machine for packaging bottle | |
| CN203477455U (en) | Positive pressure gas and negative pressure gas distributing device | |
| CN205533096U (en) | Compressor air cooling packs | |
| CN204717358U (en) | Pipeline gas leak detecting device | |
| CN110146232B (en) | Vacuum box hydrogen leakage detection system and operation method thereof | |
| CN204666315U (en) | A kind of helium mass spectrum leak detecting device of low pressure workpiece | |
| CN208703213U (en) | A kind of one-way ventilating explosion-proof valve and box body tightness detect jig | |
| CN204008046U (en) | Lithium battery fluid injection air-tightness detection device | |
| CN203479484U (en) | Package container leak detection machine | |
| CN101509823B (en) | Hollow container ventilation property test device using pressure differential method | |
| CN203836247U (en) | Multifunctional valve element of novel stop valve | |
| CN103953574B (en) | The shaft seal structure of a kind of cryopump and axle are sealed gas control system | |
| CN202703998U (en) | Turntable type packing bottle leakage detection machine | |
| CN105021395B (en) | Oil filter bypasses valve opening pressure gas-detecting device | |
| CN206707700U (en) | A kind of solid isotope release with automatic pressure-balancing | |
| CN201779345U (en) | Gas pressure display valve and gas pressure display device with the same | |
| CN101162047A (en) | Highly effective mechanically-sealing apparatus | |
| CN202328960U (en) | Refrigerant recovery device | |
| CN201340328Y (en) | Hollow container breathing property testing device using differential pressure method | |
| CN105241610A (en) | Leak detection method of air conditioner indoor unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |