CN218646500U - Dustproof ventilation device for pressure gauge and pressure gauge - Google Patents
Dustproof ventilation device for pressure gauge and pressure gauge Download PDFInfo
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- CN218646500U CN218646500U CN202222115784.5U CN202222115784U CN218646500U CN 218646500 U CN218646500 U CN 218646500U CN 202222115784 U CN202222115784 U CN 202222115784U CN 218646500 U CN218646500 U CN 218646500U
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Abstract
The utility model discloses a manometer device of ventilating that prevents dust and manometer, a serial communication port, include: the oil-filled nail comprises a nail body and a nail head, the nail body is used for plugging an oil filling port on the watch case, an oil-filled nail air passage is formed inside the oil-filled nail, and the oil-filled nail air passage is communicated with the inside of the watch case; the dustproof cap is sleeved on the nail head, a dustproof cap air passage is formed between the dustproof cap and the nail head, one end of the dustproof cap air passage is communicated with the oil-filled nail air passage, the other end of the dustproof cap air passage is communicated with the external atmosphere, a through hole formed by the dustproof cap air passage and the external atmosphere is formed in the lower end edge of the dustproof cap, and the interior of the watch case is communicated with the external atmosphere sequentially through the oil-filled nail air passage and the dustproof cap air passage. The utility model provides a manometer breather that prevents dust not only has the effect of ventilating, still has waterproof and dirt-proof effect.
Description
Technical Field
The utility model relates to a manometer field, more specifically says, relates to a dustproof breather of manometer and manometer.
Background
The pressure gauge generally comprises a shell, a cover, a joint, a dial plate, a pointer, an elastic element, a movement and other parts. The working principle of the pressure gauge is as follows: the pressure gauge transmits pressure deformation to the pointer through elastic deformation of an elastic element in the gauge and a conversion mechanism of a movement in the gauge, so that the pointer rotates to display pressure.
In order to ensure the normal operation of the various components inside the pressure gauge case, it is necessary to inject lubricating oil into the case in a timely manner. The pressure instrument is provided with an oil filling port on the shell, and lubricating oil can be injected into the pressure meter through the oil filling port.
Referring to fig. 1, fig. 1 is a side view of a pressure gauge case according to an embodiment of the prior art. The pressure gauge is in a harsh working environment, and in order to prevent dust in the surrounding environment from entering the case 100 through the oil filling port and further damaging components inside the case 100, a person skilled in the art will usually use the plug 200 to plug the oil filling port. However, if the oil filling opening is closed, the inside of the case 100 is isolated from the outside atmosphere, and at a high temperature, the pressure inside the case 100 may increase, which may cause deformation of the elastic member, thereby causing deviation of the pressure measurement value of the pressure gauge.
Therefore, how to prevent external dust from entering the inside of the watch case and ensure that the inside of the watch case is communicated with the outside is a critical problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at can enough prevent that external miscellaneous dirt from entering into inside the watchcase, can ensure inside and the external world of watchcase again simultaneously and keep the intercommunication. In order to achieve the above purpose, the utility model provides a following technical scheme:
a dustproof breather of manometer includes:
the oil-filled nail comprises a nail body and a nail head, the nail body is used for plugging an oil filling port on the watch case, an oil-filled nail air passage is formed inside the oil-filled nail, and the oil-filled nail air passage is communicated with the inside of the watch case;
the dustproof cap is sleeved on the nail head, a dustproof cap air passage is formed between the dustproof cap and the nail head, one end of the dustproof cap air passage is communicated with the oil-filled nail air passage, the other end of the dustproof cap air passage is communicated with the external atmosphere, a through hole formed by the dustproof cap air passage and the external atmosphere is formed in the lower end edge of the dustproof cap, and the interior of the watch case is communicated with the external atmosphere sequentially through the oil-filled nail air passage and the dustproof cap air passage.
Preferably, the dust cap air passage comprises a gap between a top wall of the dust cap and a top wall of the stud and further comprises a gap between a side wall of the dust cap and a side wall of the stud.
Preferably, the side wall of the dust cap is provided with a rib extending along the axial direction, the rib is in pressing contact with the side wall of the nail head, and the rib enables a gap to be formed between the side wall of the dust cap and the side wall of the nail head.
Preferably, the ribs are distributed at intervals around the axis of the dust cap, and the gaps between the side walls of the dust cap and the side walls of the nail head are distributed between two adjacent ribs.
Preferably, the protruding rib and the dust cap are integrally formed.
Preferably, the dust cap is a rubber dust cap.
Preferably, the dustproof ventilation device of the pressure gauge further comprises a screwed plug, the oil-filled nail air passage comprises an internal thread hole arranged in the nail head and a communication hole arranged in the nail body, the screwed plug is in threaded fit with the internal thread hole, the inner diameter of the communication hole is smaller than that of the internal thread hole, an annular platform is formed at the joint of the internal thread hole and the communication hole, and the screwed plug can be abutted against the annular platform.
Preferably, a screwed plug sealing ring is arranged on the annular table.
Preferably, an oil filling nail sealing ring is arranged between the nail head and the oil filling port.
The utility model also provides a pressure instrument, which comprises a meter shell, be provided with the oil filling port on the watchcase, be equipped with the dustproof breather of an arbitrary manometer of above-mentioned in the oil filling port.
It can be seen from the above technical solutions that: the utility model discloses well watchcase is inside to loop through oil charge nail air flue, dustproof cap air flue and external atmosphere and to communicate with each other, consequently the utility model provides a dustproof ventilation unit of manometer has the effect of ventilating to ensure that the inside and outside atmospheric pressure of watchcase is unanimous, thereby improve the degree of accuracy of manometer.
The utility model discloses in, the opening that the dustproof cap air flue is connected with external atmosphere is located the lower extreme edge of dustproof cap, and the rainwater can't enter into the watchcase through the opening of dustproof cap air flue upstream, consequently the utility model provides a dustproof ventilation unit of manometer has the effect of rain-proof water.
The dust enters the watch case through a long route, and some dust can be attached to the inner wall of the air passage of the oil filling nail or the air passage of the dust cap during the flowing process and cannot enter the watch case. Meanwhile, the oil filling nail air passage and the dust cap air passage are not coaxial linear air passages, so that resistance is caused to the flow of impurities, and the dust is prevented from entering the inside of the watch case. Therefore, the utility model provides a dustproof breather of manometer has dirt-proof effect.
Therefore, the utility model provides a dustproof breather of manometer not only has the effect of ventilating, still has waterproof and dirt-proof effect.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained without inventive efforts.
FIG. 1 is a side view of a pressure gauge case according to one embodiment of the prior art;
fig. 2 is a front view of a dustproof ventilating device for a pressure gauge according to an embodiment of the present invention;
fig. 3 is a top view of a dust cap according to an embodiment of the present invention;
fig. 4 is a front view of a dust cap according to an embodiment of the present invention.
Wherein 100 is a watch case, 200 is a plug, 11 is a nail head, 12 is a nail body, 111 is an internal thread hole, 121 is a communicating hole, 2 is a dustproof cap, 21 is a side wall of the dustproof cap, 211 is a rib, 22 is a top wall of the dustproof cap, 3 is a screwed plug, 4 is a screwed plug sealing ring, and 5 is an oil filling port.
Detailed Description
The utility model discloses a manometer ventilation unit that prevents dust, the device can enough prevent that external miscellaneous dirt from entering into the watchcase inside, can ensure the watchcase inside again simultaneously and keep the intercommunication with the external world.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-4, the utility model discloses a dustproof breather of manometer, include: oil-filled nails and dust caps 2. The oil nail specifically comprises a nail body 12 and a nail head 11, and the nail body 12 is used for plugging the oil filling port 5 on the watch case. The matching relation between the nail body 12 and the oil filling port 5 can be interference fit or thread fit. If the screw thread is matched, the nail body 12 is provided with external screw threads, and the inner wall of the oil filling opening 5 is provided with internal screw threads. In order to improve the sealing performance of plugging, an oil-filled nail sealing ring can be sleeved on the nail body 12, and along with the screwing-in of the nail body 12, the nail cap tightly presses the oil-filled nail sealing ring on the port of the oil filling port 5.
The utility model provides an inside oil charge nail air flue that forms of oil charge nail, the effect of oil charge nail air flue lies in inside and the external atmosphere of intercommunication watchcase.
The dustproof cap 2 is sleeved on the nail head 11, and an air passage of the dustproof cap 2 is formed between the dustproof cap 2 and the nail head 11. The oil-filled nail air passage is communicated with the dustproof cap 2 air passage, and the interior of the watch case is communicated with the outside atmosphere sequentially through the oil-filled nail air passage and the dustproof cap 2 air passage. The air passage of the dust cap 2 is essentially the gap between the inner wall of the dust cap 2 and the outer wall of the nail head 11. One end of the air passage of the dustproof cap 2 is communicated with the air passage of the oil filling nail, and the other end of the air passage of the dustproof cap is communicated with the outside atmosphere. And, the opening that dustproof cap 2 air flue and external atmosphere communicate is located the lower extreme edge department of dustproof cap 2.
The utility model discloses well watchcase inside loops through oil charge nail air flue, 2 air flues of dustproof cap and external atmosphere and communicates with each other, consequently the utility model provides a dustproof ventilation unit of manometer has the effect of ventilating to ensure that the inside and outside atmospheric pressure of watchcase is unanimous, thereby improve the degree of accuracy of manometer.
When the rain water enters the watchcase in rainy weather, water mist can be generated on the glass of the watchcase under the temperature difference pressure, and the pressure value cannot be seen clearly. In addition, rain water can cause corrosion of parts inside the watch case. The utility model discloses in, the opening that 2 air flues of dust cap and external atmosphere are connected is located the lower extreme edge of dust cap 2, and the rainwater can't enter into the watchcase through the opening of 2 air flues of dust cap upstream, consequently the utility model provides a dustproof ventilation unit of manometer has the effect of rain-proof water.
If the miscellaneous dust in the surrounding environment enters the watchcase, firstly the lower end of the dustproof cap 2 is wound to enter the air passage of the dustproof cap 2 along the through hole communicated with the outside atmosphere through the air passage of the dustproof cap 2, and then the miscellaneous dust enters the air passage of the oil filling nail, and then the miscellaneous dust can enter the watchcase. The dust enters the watchcase through a long route, and some dust may be attached to the inner wall of the air passage of the oil filling nail or the dust cap 2 in the flowing process and cannot enter the watchcase. Meanwhile, the air passage of the oil filling nail and the air passage of the dustproof cap 2 are not linear air passages which are coaxially arranged, so that resistance is caused to the flow of impurities, and therefore the dust is prevented from entering the inside of the watch case. Therefore, the utility model provides a dustproof breather of manometer has dirt-proof effect.
Therefore, the utility model provides a dustproof breather of manometer not only has the effect of ventilating, still has waterproof and dirt-proof effect.
Referring to fig. 1 and 4, the air passage of the dust cap 2 specifically includes a gap between the top wall 22 of the dust cap 2 and the top wall of the stud 11, and a gap between the side wall 21 of the dust cap 2 and the side wall of the stud 11.
In order to facilitate the formation of the gap between the sidewall 21 of the dust cap 2 and the sidewall of the nail head 11, the embodiment of the present invention provides a protruding rib 211 extending along the axial direction of the dust cap 2 on the sidewall 21 of the dust cap 2. After the dust cap 2 is fitted over the stud 11, the ribs 211 are in pressing contact with the side walls of the stud 11. The presence of the ribs 211 provides a gap between the side wall 21 of the dust cap 2 and the side wall of the stud 11.
The gap between the top wall of the dustproof cap 2 and the top wall of the nail head 11 is formed during assembly, and a certain gap is ensured between the top wall of the dustproof cap 2 and the top wall of the nail head 11.
Further, referring to fig. 3, in the embodiment of the present invention, the protruding ribs 211 are designed to be plural, and the plural protruding ribs 211 are distributed around the axis of the dust cap 2 at intervals. The side wall 21 of the dust cap 2 and the side wall of the stud 11 form a gap between adjacent ribs 211. After the dustproof cap 2 is sleeved on the nail head 11, the nail head 11 is tightly held by the convex ribs 211, so that the firmness of connection between the dustproof cap 2 and the top is ensured.
If the material of the dust cap 2 is designed to be metal, then due to the tight fit between the dust cap 2 and the nail head 11, a large assembling force needs to be overcome when the dust cap 2 is sleeved on the nail head 11, and the assembling force is likely to damage the nail head 11 or the dust cap 2. Based on dustproof cap 2 is convenient for assemble consideration, the utility model discloses specific embodiment is the preferred rubber of material with dustproof cap 2, and rubber dustproof cap 2 has elasticity good, advantages such as corrosion-resistant.
Because the rubber dust cap 2 is tightly matched with the nail head 11, when the nail head 11 is sleeved with the rubber dust cap 2, the rubber dust cap 2 needs to be firstly opened, then the nail head 11 is sleeved with the rubber dust cap 2, and then the convex ribs 211 on the inner wall of the rubber dust cap 2 tightly hold the nail head 11 under the action of resilience force of the rubber dust cap 2. Because the rubber dustproof cap 2 has better elasticity, the expansion and the rebound holding are facilitated. In addition, the rubber dust cap 2 and the convex rib 211 on the inner wall are integrally injection-molded.
From the above description, the oil filling nail is designed with an oil filling nail air passage inside, the oil filling nail air passage is communicated with the inside of the watch case, and the oil filling nail air passage is also communicated with the dust cap 2 air passage. During the transportation of the pressure gauge, the lubricating oil inside the gauge case is likely to leak out through the air passage of the oil filling nail and the air passage of the dust cap 2. Based on this problem, the specific embodiment of the utility model makes following design:
the utility model discloses specific embodiment has add and has led to plug 3 soon. The oil-filled nail air channel specifically comprises an internal threaded hole 111 arranged in the nail head 11 and a communication hole 121 arranged in the nail body 12. The internal thread hole 111 in the nail head 11 is in threaded fit with the screwed-through plug 3. The internal thread hole 111 is communicated with the communication hole 121, one end of the communication hole 121 far away from the internal thread hole 111 is communicated with the interior of the watchcase, and one end of the internal thread hole 111 far away from the communication hole 121 is communicated with the air passage of the dustproof cap 2. The internal diameter of the female screw hole 111 is larger than the internal diameter of the communication hole 121, so that an annular land is formed at a portion where the female screw hole 111 and the communication hole 121 intersect. When the screw-on plug 3 is screwed into the internal threaded hole 111, the screw-on plug 3 will abut against the annular table. Thus, the communication hole 121 is blocked, and the lubricating oil in the case does not leak.
When the pressure gauge is transported, the screwed plug 3 is screwed in the internal threaded hole 111, and the air passage of the oil filling nail is blocked, so that the lubricating oil is prevented from leaking. When the pressure gauge is used, the screwed plug 3 is unscrewed, so that an air passage of the oil filling nail is communicated, and the air pressure inside and outside the meter shell is kept consistent.
In order to improve the sealing performance of the plug-in plug 3, the plug-in plug sealing ring 4 can be arranged on the annular table, and when the plug-in plug 3 is screwed on the annular table, the plug-in plug sealing ring 4 on the plug-in plug 3 can be extruded, so that the lubricating oil in the watch case is further prevented from flowing out along a gap between the plug-in plug 3 and the internal thread hole 111.
In order to do benefit to and to revolve to lead to plug 3 and revolve to revolve, the utility model discloses specific embodiment has set up on the roof that leads to plug 3 soon with screwdriver complex word groove or rice seed groove, consequently can come to revolve to lead to plug 3 soon with the help of the screw.
It should be noted that if the dust enters the watch case, the dust firstly needs to go around the lower end edge of the dust cap 2, and flow upward through the gap between the ribs 211 inside the dust cap 2, then flow radially toward the center of the nail head 11 in the gap between the top wall 22 of the dust cap 2 and the top wall of the nail head 11, then enter the internal thread hole 111 of the nail head 11, then pass through the gap between the screw plug 3 and the internal thread hole 111, then enter the communication hole 121 of the nail body 12, and finally enter the watch case. It can be seen that the flow path of the dust is more tortuous and longer, effectively blocking the entry of dust.
It should be noted that the internal thread hole 111, the gap between the internal thread hole 111 and the screw plug 3, and the communication hole 121 constitute an oil-filled nail air passage. The gap between two adjacent ribs 211 and the gap between the top wall 22 of the dust cap 2 and the top wall of the stud 11 constitute the air passage of the dust cap 2.
The utility model also discloses a pressure instrument, including the watchcase, be provided with on this watchcase and fill oil mouth 5, be equipped with the dustproof air-breather of manometer in this oil fill mouth 5, especially, this dustproof air-breather of manometer is the dustproof air-breather of arbitrary manometer of the aforesaid, and the dustproof air-breather of above-mentioned manometer has above-mentioned effect, and the manometer that has the dustproof air-breather of above-mentioned manometer has above-mentioned effect equally, so no longer give unnecessary details here.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are 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 a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a manometer breather that prevents dust which characterized in that includes:
the oil-filled nail comprises a nail body and a nail head, the nail body is used for plugging an oil filling port on the watch case, an oil-filled nail air passage is formed inside the oil-filled nail, and the oil-filled nail air passage is communicated with the inside of the watch case;
the dustproof cap is sleeved on the nail head, a dustproof cap air passage is formed between the dustproof cap and the nail head, one end of the dustproof cap air passage is communicated with the oil-filled nail air passage, the other end of the dustproof cap air passage is communicated with the external atmosphere, a through hole formed by the dustproof cap air passage and the external atmosphere is formed in the lower end edge of the dustproof cap, and the interior of the watch case is communicated with the external atmosphere sequentially through the oil-filled nail air passage and the dustproof cap air passage.
2. The pressure gauge dust vent of claim 1, wherein the dust cap air passage comprises a gap between a top wall of the dust cap and a top wall of the stud, and further comprises a gap between a side wall of the dust cap and a side wall of the stud.
3. The dust vent of pressure gauge according to claim 2, wherein the side wall of said dust cap is provided with an axially extending rib, said rib is in pressing contact with the side wall of said stud, said rib forms a gap between the side wall of said dust cap and the side wall of said stud.
4. The pressure gauge dust vent of claim 3, wherein the ribs are spaced around the axis of the dust cap, and the gap between the side wall of the dust cap and the side wall of the stud is between two adjacent ribs.
5. A pressure gauge dust vent according to claim 3, wherein said rib is integrally formed with said dust cap.
6. The pressure gauge dust vent of claim 4, wherein the dust cap is a rubber dust cap.
7. The dustproof ventilating device for the pressure gauge according to claim 1, further comprising a screwed plug, wherein the oil-filled nail air passage comprises an internal thread hole arranged in the nail head and a communicating hole arranged in the nail body, the screwed plug is in threaded fit with the internal thread hole, the inner diameter of the communicating hole is smaller than that of the internal thread hole, an annular platform is formed at the joint of the internal thread hole and the communicating hole, and the screwed plug can be tightly abutted to the annular platform.
8. A dust-proof air vent device for a pressure gauge according to claim 7, wherein a screw plug sealing ring is arranged on the annular table.
9. The dustproof breather apparatus of pressure gauge according to claim 1, wherein an oil-filled nail sealing ring is disposed between the nail head and the oil filling port.
10. A pressure gauge comprising a case provided with an oil filling port, wherein the oil filling port is fitted with a pressure gauge dust vent apparatus as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222115784.5U CN218646500U (en) | 2022-08-11 | 2022-08-11 | Dustproof ventilation device for pressure gauge and pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222115784.5U CN218646500U (en) | 2022-08-11 | 2022-08-11 | Dustproof ventilation device for pressure gauge and pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218646500U true CN218646500U (en) | 2023-03-17 |
Family
ID=85490034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222115784.5U Active CN218646500U (en) | 2022-08-11 | 2022-08-11 | Dustproof ventilation device for pressure gauge and pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218646500U (en) |
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2022
- 2022-08-11 CN CN202222115784.5U patent/CN218646500U/en active Active
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