CN210638730U - Instrument and meter shell with prevent leaking function - Google Patents
Instrument and meter shell with prevent leaking function Download PDFInfo
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- CN210638730U CN210638730U CN201921169475.8U CN201921169475U CN210638730U CN 210638730 U CN210638730 U CN 210638730U CN 201921169475 U CN201921169475 U CN 201921169475U CN 210638730 U CN210638730 U CN 210638730U
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- instrument
- pressure balance
- balance hole
- hole
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Abstract
The utility model relates to an instrument and meter technical field, concretely relates to instrument and meter shell with prevent leaking function, including the shell body, the lateral wall lower part of shell body is equipped with step portion, and sets up the pressure balance hole that link up to shell body inner chamber on the step portion, install hole shutoff subassembly in the pressure balance hole, and the inner chamber in pressure balance hole is equipped with the molecular sieve. The utility model overcomes prior art's is not enough, reasonable in design, and compact structure, effectual solved current instrument and meter, steam condenses into the water column in the pressure balance hole in the atmospheric pressure, is called the knot hourglass, and the knot hourglass can lead to external atmospheric pressure and the inside atmospheric pressure imbalance of instrument, influences the testing result of instrument body, brings very big and even vexed problem for the detection of medium, has higher social use value and application prospect.
Description
Technical Field
The utility model relates to an instrument and meter technical field, concretely relates to instrument and meter shell with prevent that it leaks function.
Background
An instrument is an instrument or equipment for detecting, measuring, observing, and calculating various physical quantities, material components, physical parameters, and the like. The vacuum leak detector, the pressure gauge, the length measuring instrument, the microscope, the multiplier and the like belong to instruments and meters. In a broad sense, the instruments can also have functions of automatic control, alarm, signal transmission and data processing, such as pneumatic regulating instruments and electric regulating instruments used in automatic control of industrial production processes, and distributed instrument control systems.
Current instrument and meter all includes inside instrument body and the shell that is used for protecting the instrument body, in order to guarantee the balance of inside atmospheric pressure and external atmospheric pressure, need set up the pressure balance hole on the instrument and meter shell, steam condenses into the water column in the pressure balance hole in the atmospheric pressure, is called the junction leakage, and the junction leakage can lead to external atmospheric pressure and the inside atmospheric pressure imbalance of instrument, influences the testing result of instrument body, brings very big trouble for the detection of medium.
Therefore, the instrument shell with the leakage prevention function is provided.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a not enough to prior art, the utility model provides an instrument and meter shell with prevent knot and leak function has overcome the not enough of prior art, reasonable in design, and compact structure, the effectual current instrument and meter of having solved, steam condenses into the water column in pressure balance hole in the atmospheric pressure, leads to external atmospheric pressure and the inside atmospheric pressure of instrument unbalanced, influences the testing result of instrument body, brings very big and troubled problem for the detection of medium.
(II) technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
an instrument and meter shell with a leakage prevention function comprises a shell body, wherein a step part is arranged at the lower part of the side wall of the shell body, a pressure balance hole penetrating through the inner cavity of the shell body is formed in the step part, a hole plugging assembly is arranged in the pressure balance hole, and a molecular sieve is arranged in the inner cavity of the pressure balance hole;
the hole plugging assembly is of an integrally formed structure and comprises a bolt head portion and a threaded bolt body portion which are fixedly connected, the bolt head portion comprises two bolt heads which are symmetrically arranged, a ventilation gap is formed between the bolt heads, the edges of one side, opposite to the two bolt heads, of the two bolt heads are connected with each other through a plurality of fixing columns, and ventilation holes which are communicated with the ventilation gap are formed in the threaded bolt body portion.
Preferably, the width of the air-permeable gap is 1-1.5 mm.
Preferably, one end of the pressure balance hole close to the outer wall of the shell body is provided with a thread groove matched with the thread bolt body, and the inner diameter of the thread groove is larger than that of the pressure balance hole.
Preferably, the inner diameter of the air hole is smaller than the diameter of the molecular sieve, and the diameter of the molecular sieve is smaller than the inner diameter of the thread groove and larger than the inner diameter of the pressure balance hole.
Preferably, one end of the threaded bolt body part close to the bolt head part is sleeved with a rubber sealing ring.
(III) advantageous effects
The embodiment of the utility model provides an instrument and meter shell with prevent leaking function possesses following beneficial effect:
1. through the integrated configuration of thread groove and hole shutoff subassembly, the effectual intercommunication of having guaranteed with external atmospheric, guarantee the atmospheric pressure in the shell body inner chamber and the balance of external atmospheric pressure, protection instrument and meter.
2. Through setting up the molecular sieve in pressure balance hole, can effectually get rid of the steam molecule that gets into in the air of pressure balance hole inner chamber, steam can condense into the water column in pressure balance hole in having solved atmospheric pressure, leads to external atmospheric pressure and the inside atmospheric pressure imbalance of instrument, influences the problem of instrument body testing result.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a structural exploded view of the present invention;
fig. 3 is a schematic view of the combined structure of the middle molecular sieve and the hole plugging component of the present invention.
In the figure: the shell comprises a shell body 1, a step part 2, a pressure balance hole 3, a thread groove 31, a molecular sieve 4, a hole plugging component 5, a bolt head 51, a ventilation gap 52, a fixing column 53, a thread bolt body part 54, a ventilation hole 55 and a rubber sealing ring 56.
Detailed Description
The invention will be further described with reference to the following figures 1-3 and examples:
the utility model provides an instrument and meter shell with prevent leaking function, includes shell body 1, the lateral wall lower part of shell body 1 is equipped with step portion 2, and sets up the pressure balance hole 3 that link up to the 1 inner chamber of shell body on the step portion 2, install hole shutoff subassembly 5 in the pressure balance hole 3, and the inner chamber in pressure balance hole 3 is equipped with molecular sieve 4, and molecular sieve 4 can effectual filtration get into the steam molecule in the 1 inner chamber air of shell body, has solved in the atmospheric pressure steam can condense into the water column in the pressure balance hole, leads to the atmospheric pressure of external atmospheric pressure and the inside atmospheric pressure imbalance of instrument, influences the problem of instrument body testing result.
In this embodiment, as shown in fig. 3, the hole plugging component 5 is an integrally formed structure, and includes a bolt head portion and a threaded bolt body portion 54 that are fixedly connected, the bolt head portion includes two bolt heads 51 that are symmetrically arranged, a ventilation gap 52 is provided between the two bolt heads 51, edges of opposite sides of the two bolt heads 51 are connected to each other through a plurality of fixing columns 53, a ventilation hole 55 that is communicated with the ventilation gap 52 is provided inside the threaded bolt body portion 54, external air enters the pressure balance hole 3 through the ventilation gap 52 and the ventilation hole 55 that are communicated, and water vapor molecules in the air are filtered through the molecular sieve 4 in the pressure balance hole 3, so that the drying of an inner cavity of the pressure balance hole 3 is ensured, and water vapor is prevented from being condensed into a water column.
In this embodiment, as shown in fig. 3, the width of the air-permeable slit 52 is 1-1.5 mm, which ensures communication with the outside atmosphere.
In this embodiment, as shown in fig. 2, a threaded groove 31 matched with the threaded bolt body 54 is formed in one end of the pressure balance hole 3 close to the outer wall of the housing body 1, the inner diameter of the threaded groove 31 is larger than that of the pressure balance hole 3, the threaded bolt body 54 is effectively fixed at the outer end of the pressure balance hole 3, and meanwhile, due to the structure of the detachable thread, the molecular sieve 4 can be replaced conveniently and timely, and the detection data of the instrument body can be guaranteed.
In this embodiment, as shown in fig. 2 and 3, the inner diameter of the air hole 55 is smaller than the diameter of the molecular sieve 4, and the diameter of the molecular sieve 4 is smaller than the inner diameter of the thread groove 31 and larger than the inner diameter of the pressure balance hole 3, so as to effectively ensure that the molecular sieve 4 covers the pressure balance hole 3, and ensure the filtration of water vapor molecules in the atmosphere.
In this embodiment, as shown in fig. 3, a rubber sealing ring 56 is sleeved on an end of the threaded bolt body 54 close to the bolt head, so as to effectively seal the gap between the threaded bolt body 54 and the threaded groove 31 and prevent water vapor from condensing.
According to the utility model discloses above-mentioned embodiment's instrument and meter shell with dehumidification function is guaranteeing under the balanced condition of 1 inner chamber atmospheric pressure of shell body and external atmospheric pressure, and the effectual steam molecule that filters in the air keeps the drying of 3 inner chambers in pressure balance hole, has guaranteed the accurate detection of the instrument body of 1 inner chamber installations of shell body.
The embodiment of the present invention discloses a preferred embodiment, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention according to the above embodiment, and make different extensions and changes, but do not depart from the spirit of the present invention, all of which are within the protection scope of the present invention.
Claims (5)
1. The utility model provides an instrument and meter shell with prevent leaking function, includes the shell body, its characterized in that: the lower part of the side wall of the shell body is provided with a step part, the step part is provided with a pressure balance hole penetrating to the inner cavity of the shell body, a hole plugging assembly is arranged in the pressure balance hole, and the inner cavity of the pressure balance hole is provided with a molecular sieve;
the hole plugging assembly is of an integrally formed structure and comprises a bolt head portion and a threaded bolt body portion which are fixedly connected, the bolt head portion comprises two bolt heads which are symmetrically arranged, a ventilation gap is formed between the bolt heads, the edges of one side, opposite to the two bolt heads, of the two bolt heads are connected with each other through a plurality of fixing columns, and ventilation holes which are communicated with the ventilation gap are formed in the threaded bolt body portion.
2. The instrument and meter case having a leakage prevention function according to claim 1, wherein: the width of the air-permeable gap is 1-1.5 mm.
3. The instrument and meter case having a leakage prevention function according to claim 1, wherein: one end of the pressure balance hole close to the outer wall of the shell body is provided with a thread groove matched with the thread bolt body, and the inner diameter of the thread groove is larger than that of the pressure balance hole.
4. The instrument and meter case having a leakage prevention function according to claim 3, wherein: the inner diameter of the air holes is smaller than the diameter of the molecular sieve, and the diameter of the molecular sieve is smaller than the inner diameter of the thread groove and larger than the inner diameter of the pressure balance hole.
5. The instrument and meter case having a leakage prevention function according to claim 1, wherein: and one end of the threaded bolt body part, which is close to the bolt head part, is sleeved with a rubber sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921169475.8U CN210638730U (en) | 2019-07-23 | 2019-07-23 | Instrument and meter shell with prevent leaking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921169475.8U CN210638730U (en) | 2019-07-23 | 2019-07-23 | Instrument and meter shell with prevent leaking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210638730U true CN210638730U (en) | 2020-05-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921169475.8U Active CN210638730U (en) | 2019-07-23 | 2019-07-23 | Instrument and meter shell with prevent leaking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210638730U (en) |
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2019
- 2019-07-23 CN CN201921169475.8U patent/CN210638730U/en active Active
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