CN112161750B - Positive pressure checking method for sealing performance of vacuum pugging machine - Google Patents
Positive pressure checking method for sealing performance of vacuum pugging machine Download PDFInfo
- Publication number
- CN112161750B CN112161750B CN202011066020.0A CN202011066020A CN112161750B CN 112161750 B CN112161750 B CN 112161750B CN 202011066020 A CN202011066020 A CN 202011066020A CN 112161750 B CN112161750 B CN 112161750B
- Authority
- CN
- China
- Prior art keywords
- vacuum chamber
- box body
- vacuum
- sliding plate
- rotating shaft
- 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.)
- Active
Links
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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/12—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
The invention belongs to the technical field of sealing performance detection through matching of various fluids, and discloses a positive pressure detection method for the sealing performance of a vacuum pugging machine, which comprises the steps of firstly coating soapy water outside a vacuum chamber of the vacuum pugging machine, then inserting an air compressor into the vacuum chamber, sealing the air compressor and the vacuum chamber, and filling gas into the vacuum chamber by using the air compressor to ensure that the gas pressure in the vacuum chamber is 0.4mpa; after the gas is filled, spraying soapy water on the outer wall of the vacuum chamber; when bubbles appear on the outer wall of the vacuum chamber, the positions of the bubbles are marked. The invention solves the problem that after the air leakage of the vacuum chamber is detected in the prior art, the air leakage point needs to be detected and searched again, so that the whole maintenance process is long.
Description
Technical Field
The invention belongs to the technical field of sealing performance detection through cooperation of various fluids, and particularly relates to a positive pressure detection method for the sealing performance of a vacuum pugging machine.
Background
The vacuum pug mill is a device for eliminating the defects of uneven distribution of components of mud cakes, air bubbles and the like. In the production process of the electric porcelain, in order to ensure that the internal quality of the finally formed product is good, after the raw materials form mud cakes, the mud cakes are required to be put into a vacuum pug mill to be processed, so that the distribution of all components tends to be uniform, the structure is dense, the quality of the prepared electric porcelain is good, and the defective rate is low.
When the vacuum pug mill is in operation, gas in the vacuum chamber needs to be extracted, so that the vacuum chamber keeps a vacuum state, the requirement on the sealing performance of the vacuum chamber is high, and the sealing performance of the vacuum chamber needs to be ensured to be good. Therefore, when the vacuum chamber is used, the sealing performance of the vacuum chamber needs to be periodically checked in a sampling mode, and the good sealing performance is ensured.
The existing detection mode is a negative pressure method, specifically, a vacuum chamber is pumped by an air pumping system of a vacuum pug mill, so that the vacuum chamber is kept in a vacuum state, and a pressure detector is inserted into the vacuum chamber. After the vacuum chamber is vacuumized, the pressure in the vacuum chamber is smaller than the external pressure, if the vacuum chamber leaks air, the external air can enter the vacuum chamber through an air leakage point, the pressure in the vacuum chamber is increased, and the reading of the pressure detector changes at the moment.
According to the mode, air leakage of the vacuum chamber of the vacuum pugging machine can be detected, but air leakage points need to be searched again in subsequent maintenance, so that the whole maintenance process is very long, and time is wasted.
Disclosure of Invention
The invention aims to provide a positive pressure checking method for sealing performance of a vacuum pugging machine, which aims to solve the problem that after air leakage of a vacuum chamber is detected in the prior art, air leakage points need to be detected and searched again, so that the whole maintenance process is tedious.
In order to achieve the purpose, the invention provides the following technical scheme that the positive pressure checking method for the sealing performance of the vacuum pugging machine comprises the steps of firstly coating soapy water outside a vacuum chamber of the vacuum pugging machine, then inserting an air compressor into the vacuum chamber, sealing the air compressor and the vacuum chamber, and filling air into the vacuum chamber by using the air compressor to enable the air pressure in the vacuum chamber to be 0.4mpa; after the gas is filled, spraying soapy water on the outer wall of the vacuum chamber; when bubbles appear on the outer wall of the vacuum chamber, the positions of the bubbles are marked.
The beneficial effects of the technical scheme are as follows:
through at the fertile soap water of vacuum chamber outside coating, at the indoor gas that blows in to the vacuum chamber, after the increase of the gas pressure in the vacuum chamber, if gas leakage, gas just can be followed gas leakage department and discharged, consequently can blow out the bubble with fertile soap water, and then can detect out vacuum chamber gas leakage, can carry out fine mark to gas leakage position simultaneously. And the used equipment is very frequently used, and the operation is very convenient.
Compared with the prior art, the method is very convenient to operate, can synchronously realize the detection and the determination of the air leakage point, and further is convenient for subsequent maintenance after marking.
Further, the concentration of the used soapy water is 15-25%.
Has the beneficial effects that: the soap water with the concentration is used, the bubble blowing effect is better, and the air leakage point detection effect can be optimal.
Further, use sprinkler to spray soapy water to the vacuum chamber outside, sprinkler is including the box that is used for storing soapy water, and the intercommunication has the drain pipe on the box, is equipped with out the liquid valve in the drain pipe, still is equipped with the defoaming structure in the box.
Has the advantages that: when soapy water is generated, stirring is needed, so that foam can be generated, and if the foam is attached to a non-air leakage point of a vacuum chamber along with the foam, an error is easily caused in judgment of an operator. And the foam eliminating structure can eliminate foam in the soap water, so that the probability of error judgment of an operator is reduced, and the detection precision is improved.
Further, the defoaming structure comprises a partition board fixed in the box body and a sleeve fixed at the top of the box body, a defoaming port is formed in the partition board, and the bottom of the sleeve is communicated with the defoaming port; the sliding plate is vertically and slidably connected in the sleeve, the sliding plate further comprises a rotating shaft penetrating through the sliding plate and the top of the box body, the rotating shaft is rotatably connected with the box body, and the sliding plate is connected with the rotating shaft through a spline; the rotating shaft is provided with a defoaming net at the lower part of the sliding plate and also comprises a driving piece for driving the sliding plate to vertically slide.
Has the advantages that: the driving piece drives the vertical slip of slide, can make telescopic lower part negative pressure, and then breathes in, attracts the foam on upper portion into the sleeve, and the foam gets into telescopic in-process, can contact with the defoaming net, punctures the foam through the defoaming net, and then realizes defoaming. And the rotating shaft can drive the defoaming net to rotate, so that the defoaming effect of the defoaming net can be increased.
Further, the driving piece comprises a threaded sleeve fixed on the inner side of the sleeve and threads arranged on the outer side of the sliding plate, and the sliding plate is in threaded connection with the threaded sleeve.
Has the advantages that: through screw-thread fit, when the pivot rotated, the drive slide rotated, and then can realize the slide rebound, with the foam suction sleeve in to utilize the defoaming net to carry out the defoaming.
Furthermore, the stirring device also comprises a stirring shaft which runs through the top of the box body and extends into the box body, the stirring shaft is driven by a motor and is rotationally connected with the box body, and a plurality of stirring blades are arranged on one end of the stirring shaft, which is positioned in the box body.
Has the advantages that: because the detection of the vacuum chamber is usually time-periodic, the soap water can be settled in the gap between the two detections, and stirring is needed when the soap water is used again, so that the soap water is uniformly mixed. The stirring shaft is driven to rotate by the motor, so that the stirring blades rotate, and the soapy water is uniformly stirred.
Furthermore, a driving gear is coaxially fixed on the stirring shaft, and a driven gear meshed with the driving gear is fixed on the rotating shaft.
Has the advantages that: synchronous rotation of the stirring shaft and the rotating shaft can be realized through transmission of the driving gear and the driven gear. During stirring, a large amount of foam is generated in the soap water, and the foam can be eliminated by the operation of the rotating shaft; and need not to establish driving piece in addition and drive the countershaft, can reduce cost.
Furthermore, the rotating shaft is sleeved with a torsion spring between the sliding plate and the top of the sleeve, one end of the torsion spring is fixed on the rotating shaft, and the other end of the torsion spring is fixed at the top of the sleeve.
Has the advantages that: through the arrangement of the torsion spring, the rotating shaft rotates in the process of stirring the soapy water, and the torsion spring stores energy; after the soapy water stirring is completed, the motor is closed, the driving stirring shaft and the rotating shaft disappear through rotating force, and therefore under the action of the torsion spring, the rotating shaft rotates reversely, so that the sliding plate moves downwards, the sliding plate can reset, meanwhile, foam which is not crushed can be extruded downwards, the foam passes through the defoaming net again, and the foam is eliminated.
Furthermore, a one-way bearing is arranged between the rotating shaft and the driving gear.
Has the advantages that: one-way bearing can realize that the (mixing) shaft drives the pivot and rotates smoothly, and when the pivot reversal under the torsional spring effect, driven gear does not take place thereupon and rotates, and then can reduce the consumption of energy for the quick reset of slide.
Furthermore, the defoaming net is provided with a plurality of layers from bottom to top, and the aperture of the defoaming net is reduced from bottom to top in sequence.
Has the beneficial effects that: through the setting to the aperture of defoaming net, can make the defoaming net of lower part eliminate great foam, if less foam does not eliminate, at the in-process that shifts up, can eliminate through the defoaming net of upside, promote the effect of defoaming.
Drawings
FIG. 1 is a longitudinal sectional view of a sprinkler in embodiment 1 of the present invention;
fig. 2 is a partial sectional view of a spray device in embodiment 2 of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a box body 1, a partition plate 11, a feeding hole 111, a foam outlet 112, a feeding hole 12, a flow guide sleeve 13, a liquid outlet pipe 14, a liquid inlet pipe 15, a stirring shaft 2, stirring blades 21, an auxiliary shaft 3, a sleeve 4, a threaded sleeve 41, a sliding plate 42, a rotating shaft 5, a foam eliminating net 51, a torsion spring 52, a bur 6, a floating plate 7, a baffle plate 8, a connecting rod 81 and a button switch 9.
Example 1:
the positive pressure inspection method for the sealing performance of the vacuum pugging machine comprises the following steps of firstly, spraying soapy water with the concentration of 15% -25% outside a vacuum chamber of the vacuum pugging machine by using a spraying device, and enabling the soapy water to be fully distributed on the outer wall of the vacuum chamber of the vacuum pugging machine; inserting the air outlet pipe of the air compressor into the vacuum chamber, and sealing the gap between the air outlet pipe and the port of the vacuum chamber by using the sealing plug so as to keep the vacuum chamber closed; starting an air compressor, and filling air into the vacuum chamber by using the air compressor so as to keep the air pressure of the vacuum chamber at 0.4mpa; after the air inflation is finished, soap water is sprayed out of the vacuum chamber for one time, when bubbles appear on the outer wall of the vacuum chamber, the positions where the bubbles appear are marked, and the positions are indicated as air leakage points.
The spraying device used in the embodiment is basically as shown in fig. 1, and comprises a box body 1, wherein supporting rods are fixed at four top corners of the bottom of the box body 1, and moving wheels are arranged at the bottoms of the supporting rods. The bottom of the left side wall of the box body 1 is provided with a liquid outlet pipe 14, and a liquid outlet valve is arranged in the liquid outlet pipe 14.
A transverse partition plate 11 is arranged in the box body 1, a feed inlet 111 is arranged on the left side of the partition plate 11, and a foam outlet 112 is arranged on the right side of the partition plate 11. The top of box 1 is equipped with charge door 12, and feed inlet 111 bottom intercommunication has the feed liquor pipe 15 that inserts feed inlet 111, and the top of charge door 12 is equipped with conical water conservancy diversion cover 13.
The top of the box body 1 is also fixed with a motor, an output shaft of the motor is coaxially fixed with a stirring shaft 2 which penetrates through the top of the box body 1 and the partition plate 11 and extends to the lower part of the partition plate 11, and the stirring shaft 2 is arranged below the partition plate 11 and is provided with a plurality of stirring blades 21. The top of the stirring shaft 2 is coaxially fixed with a driving gear. Still including being located the left auxiliary shaft 3 of (mixing) shaft 2, auxiliary shaft 3 runs through baffle 11, and auxiliary shaft 3 is located baffle 11 below and also is equipped with stirring vane 21, all coaxial fixed with drive gear on auxiliary shaft 3 and the (mixing) shaft 2, two drive gear meshes.
Still including removing the foam structure, remove the foam structure including fixed sleeve 4 at the inboard top surface, the bottom and the play foam mouth 112 intercommunication of sleeve 4, the coaxial threaded bush 41 that is fixed with in sleeve 4 still includes a slide 42, and the outer wall of slide 42 is equipped with the screw thread for slide 42 and the threaded bush 41 screw-thread fit. The box body is characterized by further comprising a rotating shaft 5 penetrating through the sliding plate 42, the top of the box body 1 and the top of the sleeve 4, the rotating shaft 5 is connected with the sliding plate 42 through a spline, and the sliding plate 42 is rotatably connected with the top of the box body 1 and the top of the sleeve 4. The pivot 5 lies in box 1 outer one and serves coaxial driven gear who is provided with driving gear meshing, is provided with one-way bearing between pivot 5 and the driven gear, when can realizing that the driving gear drives driven gear and rotate, pivot 5 rotates thereupon, and when pivot 5 antiport, driven gear does not take place to rotate.
Still the cover is equipped with torsional spring 52 on the pivot 5 between sleeve 4 top and slide 42, and the one end welding of torsional spring 52 is at the sleeve 4 top, and the other end welding of torsional spring 52 is at the pivot 5 outer wall. The rotating shaft 5 is further provided with a plurality of layers of defoaming nets 51 below the sliding plate 42, in this embodiment, the defoaming nets 51 are provided with three layers, and the aperture of the defoaming net 51 from bottom to top is gradually reduced.
The specific use process of the spraying device is as follows:
soap water is added from the feeding port 12 and guided to the lower portion of the partition plate 11 in the box body 1 through the liquid inlet pipe 15, the motor is started, and the motor drives the stirring shaft 2 to rotate, so that the soap water is uniformly stirred, and the detection effect is improved. The stirring shaft 2 rotates to drive the driving gear to rotate, the rotating shaft 5 rotates through the driving of the driven gear, the torsion spring 52 stores energy and drives the sliding plate 42 to rotate, and due to the fact that the sliding plate 42 is in threaded fit with the threaded sleeve 41, the sliding plate 42 rotates and moves upwards, and air bubbles generated by stirring are attracted into the sleeve 4.
In the process of moving the sliding plate 42 upwards to suck the foam, the foam gradually contacts with the defoaming net 51 and is punctured by the defoaming net 51, and meanwhile, the defoaming net 51 rotates, so that the defoaming effect is further improved.
After stirring, under the effect of torsional spring 52, pivot 5 reversal, and then drive slide 42 reversal and move down, extrude the foam that has not been extruded yet for the foam is again through defoaming net 51 defoaming, promotes the effect of defoaming.
And then the liquid outlet valve is opened, and the soapy water is sprayed on the outer wall of the vacuum chamber. When the vacuum cleaner is used, the collecting tank can be arranged below the vacuum chamber, and soapy water is collected and reused.
Example 2:
The specific implementation process is as follows:
when adding soapy water, the liquid level of soapy water rises gradually, consequently can make kickboard 7 rise gradually under the buoyancy effect to drive baffle 8 and shift up, when baffle 8 pastes with 11 bottoms of baffle, seal feed inlet 111, can make 11 below formation inclosed spaces of baffle, the foam conveniently inhales and carries out the defoaming in the sleeve 4. And at the moment, the liquid level of the soapy water is kept moderate, the baffle 8 can extrude the button switch 9, so that the buzzer gives out a warning, and an operator is promoted to stop adding the soapy water.
It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention, and these changes and modifications should not be construed as affecting the performance of the invention and its practical application.
Claims (4)
1. The positive pressure checking method for the sealing performance of the vacuum pugging machine is characterized by comprising the following steps: firstly, coating soapy water outside a vacuum chamber of a vacuum pugging machine, inserting an air compressor into the vacuum chamber, sealing the air compressor and the vacuum chamber, and filling air into the vacuum chamber by using the air compressor to enable the air pressure in the vacuum chamber to be 0.4mpa; after the gas is filled, spraying soapy water on the outer wall of the vacuum chamber; when bubbles appear on the outer wall of the vacuum chamber, marking the positions where the bubbles appear;
spraying soapy water to the outer wall of the vacuum chamber by using a spraying device, wherein the spraying device comprises a box body for storing the soapy water, a liquid outlet pipe is communicated with the box body, a liquid outlet valve is arranged in the liquid outlet pipe, and a defoaming structure is also arranged in the box body;
the defoaming structure comprises a partition plate fixed in the box body and a sleeve fixed at the top of the box body, a defoaming port is formed in the partition plate, and the bottom of the sleeve is communicated with the defoaming port; the sliding plate is vertically and slidably connected in the sleeve, the box body is provided with a rotating shaft penetrating through the sliding plate and the top of the box body, the rotating shaft is rotatably connected with the box body, and the sliding plate is connected with the rotating shaft through a spline; the rotating shaft is provided with a defoaming net at the lower part of the sliding plate and also comprises a driving piece for driving the sliding plate to vertically slide;
the driving piece comprises a threaded sleeve fixed on the inner side of the sleeve and threads arranged on the outer side of the sliding plate, and the sliding plate is in threaded connection with the threaded sleeve;
the stirring shaft penetrates through the top of the box body and extends into the box body, the stirring shaft is driven by a motor and is rotationally connected with the box body, and a plurality of stirring blades are arranged at one end of the stirring shaft, which is positioned in the box body;
a driving gear is coaxially fixed on the stirring shaft, and a driven gear meshed with the driving gear is fixed on the rotating shaft;
the rotating shaft is sleeved with a torsion spring between the sliding plate and the top of the sleeve, one end of the torsion spring is fixed on the rotating shaft, and the other end of the torsion spring is fixed at the top of the sleeve.
2. The positive pressure inspection method for sealing performance of vacuum pug mill according to claim 1, characterized in that: the concentration of the used soapy water is 15-25%.
3. The positive pressure inspection method for the sealing performance of the vacuum pug mill according to claim 2, characterized in that: a one-way bearing is arranged between the rotating shaft and the driving gear.
4. The positive pressure inspection method for sealing performance of vacuum pug mill according to claim 3, characterized in that: the defoaming net is provided with a plurality of layers from bottom to top, and the aperture of the defoaming net is reduced from bottom to top in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011066020.0A CN112161750B (en) | 2020-09-30 | 2020-09-30 | Positive pressure checking method for sealing performance of vacuum pugging machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011066020.0A CN112161750B (en) | 2020-09-30 | 2020-09-30 | Positive pressure checking method for sealing performance of vacuum pugging machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112161750A CN112161750A (en) | 2021-01-01 |
| CN112161750B true CN112161750B (en) | 2022-10-04 |
Family
ID=73861005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011066020.0A Active CN112161750B (en) | 2020-09-30 | 2020-09-30 | Positive pressure checking method for sealing performance of vacuum pugging machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112161750B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116839824B (en) * | 2023-09-01 | 2023-11-21 | 山东中亚轮胎试验场有限公司 | Vehicle tyre air leakage detection device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305804B (en) * | 2011-05-19 | 2013-06-05 | 北京鼎臣超导科技有限公司 | Device and method for measuring superconducting transition temperature of high temperature superconducting material |
| JP5985996B2 (en) * | 2013-01-18 | 2016-09-06 | 泉工医科工業株式会社 | Air leak detection device and electric suction device including the same |
| CN210037096U (en) * | 2019-01-04 | 2020-02-07 | 固安科宇鑫鹏自动化控制设备有限公司 | Full-automatic jar of body gas tightness detects machine |
| CN109916572B (en) * | 2019-04-24 | 2021-06-01 | 台州精壹机电股份有限公司 | Water-cooling motor casing check out test set convenient to observe |
| CN110280051B (en) * | 2019-07-09 | 2021-07-09 | 四川省蜀爱新材料有限公司 | Low-silicon defoaming agent |
| CN111548917A (en) * | 2020-05-13 | 2020-08-18 | 邹娜娜 | Fermentation cylinder that has defoaming function |
-
2020
- 2020-09-30 CN CN202011066020.0A patent/CN112161750B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112161750A (en) | 2021-01-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112161750B (en) | Positive pressure checking method for sealing performance of vacuum pugging machine | |
| CN214400014U (en) | Oil-water separation device for heat treatment water tank | |
| CN112098334B (en) | Fruit vegetables pesticide residue detection device | |
| CN108746049B (en) | Material cleaning equipment | |
| CN117101583A (en) | Reation kettle convenient to liquid feeding | |
| CN218766257U (en) | Organic pigment detects uses dispersion equipment | |
| CN112223546A (en) | Preparation process of aerated concrete | |
| CN113634033B (en) | Slurry-free papermaking equipment for papermaking process | |
| CN211105787U (en) | Vacuum filtering oil press | |
| CN211274659U (en) | Fermentation reaction kettle for producing L-hydroxyproline | |
| CN112588149A (en) | Vacuum stirring toothpaste making machine for producing Chinese herbal medicine toothpaste | |
| CN220738677U (en) | Polishing machine cleaning device for color master production | |
| CN218962462U (en) | Battery grade lithium fluoride batching cauldron | |
| CN221107775U (en) | Powder mixer | |
| CN220496085U (en) | Raw material mixing and stirring equipment for boiler cleaning agent production | |
| CN214554467U (en) | Anti-blocking rotational flow microbubble flotation column | |
| CN221187172U (en) | PVC tubular product raw materials mixing arrangement | |
| CN220952071U (en) | Continuous corrosion device for corrosion aluminum foil production | |
| CN216337042U (en) | Spraying room water treatment facilities | |
| CN212974271U (en) | Vacuum defoaming equipment for glass cement production | |
| CN220664963U (en) | Sewage treatment air floatation machine in ginseng extraction process | |
| CN220092333U (en) | Steel ball surface cleaning device | |
| CN215525278U (en) | Extraction device that sodium cyclamate detected | |
| CN220386416U (en) | Mixing equipment convenient to clean | |
| CN211837855U (en) | Reation kettle agitating unit for pharmacy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |