CN112033614A - Positive and negative pressure air sealing device - Google Patents
Positive and negative pressure air sealing device Download PDFInfo
- Publication number
- CN112033614A CN112033614A CN202010777299.7A CN202010777299A CN112033614A CN 112033614 A CN112033614 A CN 112033614A CN 202010777299 A CN202010777299 A CN 202010777299A CN 112033614 A CN112033614 A CN 112033614A
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- negative pressure
- positive
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- detector
- detector main
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- 238000007789 sealing Methods 0.000 title claims description 6
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 238000005096 rolling process Methods 0.000 claims description 14
- 239000000428 dust Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to the technical field of airtight devices, and discloses a positive and negative pressure airtight device, which comprises a protection box with an opening at the upper end, wherein a detector main body is connected in the protection box through a protection mechanism; protection mechanism includes the backup pad, backup pad sliding connection is in the guard box, the upper end at the backup pad is connected to the detector main part, the upper end of detector main part is connected with the apron, the apron sets up in the upper end of guard box, the sealed screwed pipe that sets up of lower extreme is connected with through rotating at the inner box bottom center department of guard box, screwed pipe female connection has the assorted threaded rod, the threaded rod is kept away from the one end of rotating and is passed the mouth of pipe setting of screwed pipe, the threaded rod is kept away from the one end fixed connection of rotating and is located at the. This positive and negative pressure gas tightness device can solve present positive and negative pressure gas tightness detector and lack effectual protection, and its external dust also gets into the inside of detector easily when not using in addition, reduces detector life's problem.
Description
Technical Field
The invention relates to the technical field of airtight devices, in particular to a positive and negative pressure airtight device.
Background
Before some important workpieces are put into use, the performance of the workpieces is often required to be detected, the workpieces can be put into normal use after being detected to be qualified, and at the moment, the positive and negative pressure air tightness detector is required to be used. When the positive and negative pressure air tightness detector works, a reference volume (also called standard volume) is self-provided in the system, the system to be detected is another volume, a controlled valve is adopted to connect the two volumes, when the two volumes are simultaneously inflated, the pressures of the two volumes are consistent, then the valve is closed and communicated with the valve, after a meeting is placed, the standard volume is totally closed and cannot leak, so the pressure of the tested piece is the inflation pressure, if the tested piece has leakage, the pressure is reduced, if the leakage is more, the pressure is reduced more until the tested piece is completely leaked, and a sensor is adopted to measure the pressure difference between the two ends.
The positive and negative pressure air tightness detector lacks effective protection at present, and external dust also easily gets into the inside of detector when it does not use in addition, reduces the life of detector.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a positive and negative pressure air tightness device which has the advantages of fully protecting a positive and negative pressure air tightness detector and preventing dust from entering the detector when the positive and negative pressure air tightness detector is not used, and solves the problems that the conventional positive and negative pressure air tightness detector is lack of effective protection, external dust is easy to enter the detector when the positive and negative pressure air tightness detector is not used, and the service life of the detector is shortened.
(II) technical scheme
In order to fully protect the positive and negative pressure air tightness detector and prevent dust from entering the detector when not in use, the invention provides the following technical scheme: a positive and negative pressure air sealing device comprises a protection box with an opening at the upper end, wherein a detector main body is connected in the protection box through a protection mechanism;
the protection mechanism comprises a supporting plate, the supporting plate is connected in a protection box in a sliding manner, the detector body is connected to the upper end of the supporting plate, the upper end of the detector body is connected with a cover plate, the cover plate is arranged at the upper end of the protection box, the center of the inner box bottom of the protection box is connected with a threaded pipe with a lower end arranged in a sealing manner through a rotating part, a matched threaded rod is connected in the threaded pipe in a threaded manner, one end, away from the rotating part, of the threaded rod penetrates through a pipe orifice of the threaded pipe to be arranged, one end, away from the rotating part, of the threaded rod is fixedly connected to the center of the lower end of the supporting plate, a driven bevel gear is fixedly sleeved on the outer pipe wall of the threaded pipe, a driving bevel gear is meshed on the driven bevel gear, one end of the rotating shaft, which is far away from the driving bevel gear, penetrates through the bearing and extends out of the protection box, and the rotating shaft is connected with the inner ring wall of the bearing.
Preferably, the rotation piece is including the ring channel and the annular piece that match each other, ring channel and annular piece phase-match, the inner box bottom center department at the guard box is seted up to the ring channel, the annular piece rotates to be connected in the ring channel, the one end that the ring channel tank bottom was kept away from to the annular piece passes the notch of ring channel and fixed connection is in the outer tube bottom center department of screwed pipe.
Preferably, rolling grooves are symmetrically formed in two ends of the supporting plate, rolling balls are arranged in the rolling grooves, the rolling balls penetrate through notches of the rolling grooves, and the rolling balls are connected to the inner box wall of the protection box in a rolling mode.
Preferably, the upper end symmetry fixedly connected with fixture block of guard box, the draw-in groove has been seted up to the position that the lower extreme of apron corresponds the fixture block, the one end that the guard box was kept away from to the fixture block passes the notch of draw-in groove and extends to the draw-in groove in, and fixture block and draw-in groove phase-match.
Preferably, the inner box bottom of the protection box is fixedly connected with limiting rods symmetrically about the threaded pipes, matched limiting holes are formed in the positions, corresponding to the limiting rods, of the supporting plates, the upper ends of the limiting rods penetrate through the limiting holes and extend outwards, the supporting plates are connected to the rod walls of the limiting rods in a sliding mode, and the detector main body is arranged between the two limiting rods.
Preferably, one end of the rotating shaft, which is far away from the driving bevel gear, is fixedly connected with a rotating handle, and the rotating handle is provided with anti-skid grains.
Preferably, the upper end of the limiting rod is fixedly connected with a limiting block.
(III) advantageous effects
Compared with the prior art, the invention provides a positive and negative pressure air-tight device, which has the following beneficial effects:
the positive and negative pressure airtight device comprises a protection mechanism consisting of a support plate, a cover plate, a rotating part, a threaded pipe, a threaded rod, a driven bevel gear, a driving bevel gear, a rotating shaft and a bearing, wherein the detector main body is protected by a protection box, when the detector main body is not used, the detector main body is accommodated in the protection box, the cover plate covers the box opening of the protection box, dust is prevented from entering the detector main body in the protection box, the service life of the detector main body is prolonged, when the detector main body is required to be used, the rotating shaft is held and rotated, the driving bevel gear is driven to rotate by the stress of the rotating shaft, the threaded pipe is driven to rotate at the center of the bottom of the inner box of the protection box through a driven gear meshed with the driving bevel gear, forces in different directions are applied to the rotating shaft, the threaded pipe also rotates in different directions, and when the threaded pipe rotates, because the support plate connected with the threaded rod can, the threaded rod in the threaded pipe does the motion in the vertical direction in opposite directions according to the rotating direction of the threaded pipe, and the threaded rod drives the detector main body on the supporting plate to move upwards synchronously to lift the detector main body out of the protective box, so that the detector main body can be normally used.
Drawings
Fig. 1 is a schematic structural diagram of a positive/negative pressure air-tight device according to the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
fig. 4 is an enlarged view of a portion C in fig. 1.
In the figure: the device comprises a protection box 1, a detector body 2, a supporting plate 3, a cover plate 4, a threaded pipe 5, a threaded rod 6, a driven bevel gear 7, a driving bevel gear 8, a rotating shaft 9, a bearing 10, an annular groove 11, an annular block 12, a rolling groove 13, a ball 14, a clamping block 15, a clamping groove 16, a limiting rod 17, a limiting hole 18 and a rotating handle 19 limiting block 20.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a positive and negative pressure air sealing device includes a protection box 1 with an opening at the upper end, and a detector main body 2 is connected in the protection box 1 through a protection mechanism;
the protection mechanism comprises a supporting plate 3, the supporting plate 3 is connected in a protection box 1 in a sliding manner, a detector main body 2 is connected to the upper end of the supporting plate 3, a cover plate 4 is connected to the upper end of the detector main body 2, the cover plate 4 is arranged at the upper end of the protection box 1, a threaded pipe 5 with a lower end sealed is connected to the center of the inner box bottom of the protection box 1 through a rotating member, a matched threaded rod 6 is in threaded connection with the threaded pipe 5, one end, away from the rotating member, of the threaded rod 6 penetrates through a pipe orifice of the threaded pipe 5, one end, away from the rotating member, of the threaded rod 6 is fixedly connected to the center of the lower end of the supporting plate 3, a driven bevel gear 7 is fixedly sleeved on the outer pipe wall of the threaded pipe 5, a driving bevel gear 8 is meshed on the driven bevel gear 7, a rotating, one end of the rotating shaft 9, which is far away from the driving bevel gear 8, penetrates through the bearing 10 and extends out of the protection box 1, the rotating shaft 9 is connected with the inner ring wall of the bearing 10, the detector main body 2 is protected by the protection box 1, when the detector main body 2 is not used, the detector main body 2 is accommodated in the protection box 1, meanwhile, the cover plate 4 covers the box opening of the protection box 1, dust is prevented from entering the detector main body 2 in the protection box 1, the service life of the detector main body 2 is prolonged, when the detector main body 2 is required to be used, the rotating shaft 9 is held and rotated, the rotating shaft 9 is stressed to drive the driving bevel gear 8 to rotate, the driven gear 7 meshed with the driving bevel gear 8 drives the threaded pipe 5 to rotate at the center of the inner box bottom of the protection box 1, forces in different directions are applied to the rotating shaft 9, the threaded pipe 5 also rotates in different directions, and when, because the backup pad 3 that is connected with threaded rod 6 can only be vertical direction motion and can't take place to rotate, the threaded rod 6 in the screwed pipe 5 is the motion of vertical direction in opposite directions according to the rotation direction of screwed pipe 5, drives the synchronous upward movement of detector main part 2 on the backup pad 3 during threaded rod 6 upward movement, rises out detector main part 2 from guard box 1, can normally use detector main part 2.
The rotation piece is including the ring channel 11 and the annular piece 12 that match each other, ring channel 11 and annular piece 12 phase-match, ring channel 11 is seted up in the inner box bottom center department of guard box 1, annular piece 12 rotates and is connected in ring channel 11, the notch of ring channel 11 and fixed connection are in the outer tube bottom center department of screwed pipe 5 are passed to the one end that ring channel 12 is far away from the ring channel 11 tank bottom, because annular piece 12 can only rotate in ring channel 11, when screwed pipe 5 takes place to rotate, screwed pipe 5 drives annular piece 12 synchronous rotation in ring channel 11, make screwed pipe 5 connect can also receive the force when the inner box bottom of the case of guard box 1 and take place to rotate.
The upper end symmetry fixedly connected with fixture block 15 of guard box 1, draw-in groove 16 has been seted up to the lower extreme of apron 4 corresponding fixture block 15's position, and the one end that guard box 1 was kept away from to fixture block 15 passes the notch of draw-in groove 16 and extends to draw-in groove 16 in, and fixture block 15 and draw-in groove 16 phase-match for apron 4 lid fastening more when on guard box 1.
The inner box bottom of the protection box 1 is fixedly connected with limiting rods 17 symmetrically relative to the threaded pipe 5, matched limiting holes 18 are formed in the positions, corresponding to the limiting rods 17, of the supporting plate 3, the upper ends of the limiting rods 17 penetrate through the limiting holes 18 and extend outwards, the supporting plate 3 is connected to the rod wall of the limiting rods 17 in a sliding mode, the detector main body 2 is arranged between the two limiting rods 17, and the supporting plate 3 can only move in the vertical direction.
One end of the rotating shaft 9, which is far away from the driving bevel gear 8, is fixedly connected with a rotating handle 19, and the rotating handle 19 is provided with anti-skid grains, so that the rotating shaft 9 can be driven to synchronously rotate by holding the rotating handle 19.
The upper end fixedly connected with stopper 20 of gag lever post 17 prevents that backup pad 3 from taking place to break away from on gag lever post 17.
In summary, the positive and negative pressure airtight device protects the detector main body 2 through the protection box 1, when the airtight device is not used, the detector main body 2 is accommodated in the protection box 1, the cover plate 4 covers the box opening of the protection box 1, dust is prevented from entering the detector main body 2 in the protection box 1, the service life of the detector main body 2 is prolonged, when the detector main body 2 needs to be used, the rotating shaft 9 is held and rotated, the rotating shaft 9 is stressed to drive the driving bevel gear 8 to rotate, the driven gear 7 meshed with the driving bevel gear 8 drives the threaded pipe 5 to rotate at the center of the inner box bottom of the protection box 1, forces in different directions are applied to the rotating shaft 9, the threaded pipe 5 also rotates in different directions, when the threaded pipe 5 rotates, because the support plate 3 connected with the threaded rod 6 can only move in the vertical direction and can not rotate, the threaded rod 6 in the threaded pipe 5 is in the motion of vertical direction in opposite directions according to the rotation direction of the threaded pipe 5, and the threaded rod 6 drives the detector main body 2 on the supporting plate 3 to move upwards synchronously when moving upwards, so that the detector main body 2 is lifted out of the protection box 1, and the detector main body 2 can be used normally.
It is to be noted that the term "comprises," "comprising," or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a positive and negative pressure air-tight device, includes upper end open-ended guard box (1), its characterized in that: the inside of the protection box (1) is connected with a detector main body (2) through a protection mechanism;
the protection mechanism comprises a supporting plate (3), the supporting plate (3) is connected in a protection box (1) in a sliding manner, a detector main body (2) is connected to the upper end of the supporting plate (3), the upper end of the detector main body (2) is connected with a cover plate (4), the cover plate (4) is arranged at the upper end of the protection box (1), the center of the inner box bottom of the protection box (1) is connected with a threaded pipe (5) with a lower end arranged in a sealing manner through a rotating piece, the threaded pipe (5) is connected with a matched threaded rod (6) in an internal thread manner, one end, far away from the rotating piece, of the threaded rod (6) penetrates through the pipe orifice of the threaded pipe (5), one end, far away from the rotating piece, of the threaded rod (6) is fixedly connected to the center of the lower end of the supporting plate (3), a driven bevel gear (7) is fixedly sleeved on the, the one end center department fixedly connected with axis of rotation (9) of screwed pipe (5) is kept away from in initiative bevel gear (8), it has bearing (10) to inlay on the tank wall of axis of rotation (9) is corresponded in guard box (1), the one end that initiative bevel gear (8) were kept away from in axis of rotation (9) passes bearing (10) and extends to guard box (1) outward, and axis of rotation (9) and bearing (10) inner circle wall are connected.
2. A positive-negative pressure gas-tight apparatus according to claim 1, wherein: the rotation piece is including ring channel (11) and annular piece (12) that match each other, ring channel (11) and annular piece (12) phase-match, the interior bottom of the case center department at guard box (1) is seted up in ring channel (11), annular piece (12) rotate to be connected in ring channel (11), the notch and the fixed connection of ring channel (11) are passed at the outer bottom of the tube center department of screwed pipe (5) to the one end that ring channel (11) tank bottom was kept away from in annular piece (12).
3. A positive-negative pressure gas-tight apparatus according to claim 1, wherein: rolling grooves (13) are symmetrically formed in two ends of the supporting plate (3), rolling balls (14) are arranged in the rolling grooves (13), the balls (14) penetrate through notches of the rolling grooves (13), and the balls (14) are connected to the inner box wall of the protection box (1) in a rolling mode.
4. A positive-negative pressure gas-tight apparatus according to claim 1, wherein: the upper end symmetry fixedly connected with fixture block (15) of guard box (1), draw-in groove (16) have been seted up to the position that the lower extreme of apron (4) corresponds fixture block (15), the notch of draw-in groove (16) is passed and extend to draw-in groove (16) to the one end that guard box (1) was kept away from in fixture block (15), and fixture block (15) and draw-in groove (16) phase-match.
5. A positive-negative pressure gas-tight apparatus according to claim 1, wherein: the utility model discloses a detector, including stopper rod (17), backup pad (3) and stopper rod (17), the inner box bottom of guard box (1) is about screwed pipe (5) symmetry fixedly connected with stopper rod (17), spacing hole (18) of assorted have been seted up in the position that backup pad (3) corresponds stopper rod (17), the upper end of stopper rod (17) is passed spacing hole (18) and is outwards extended, and backup pad (3) sliding connection is on the pole wall of stopper rod (17), detector main part (2) set up between two stopper rod (17).
6. A positive-negative pressure gas-tight apparatus according to claim 1, wherein: one end of the rotating shaft (9) far away from the driving bevel gear (8) is fixedly connected with a rotating handle (19), and anti-skid grains are arranged on the rotating handle (19).
7. A positive and negative pressure gas-tight apparatus according to claim 5, wherein: the upper end of the limiting rod (17) is fixedly connected with a limiting block (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010777299.7A CN112033614A (en) | 2020-08-05 | 2020-08-05 | Positive and negative pressure air sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010777299.7A CN112033614A (en) | 2020-08-05 | 2020-08-05 | Positive and negative pressure air sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112033614A true CN112033614A (en) | 2020-12-04 |
Family
ID=73582429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010777299.7A Withdrawn CN112033614A (en) | 2020-08-05 | 2020-08-05 | Positive and negative pressure air sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112033614A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113675777A (en) * | 2021-08-23 | 2021-11-19 | 江山市鑫源电气有限公司 | Intelligent locking anti-misoperation device and anti-misoperation ring main unit |
-
2020
- 2020-08-05 CN CN202010777299.7A patent/CN112033614A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113675777A (en) * | 2021-08-23 | 2021-11-19 | 江山市鑫源电气有限公司 | Intelligent locking anti-misoperation device and anti-misoperation ring main unit |
| CN113675777B (en) * | 2021-08-23 | 2023-09-12 | 江山市鑫源电气有限公司 | Intelligent locking error-preventing device and error-preventing ring main unit |
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Application publication date: 20201204 |
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| WW01 | Invention patent application withdrawn after publication |