CN209781636U - Improved ventilating bolt - Google Patents
Improved ventilating bolt Download PDFInfo
- Publication number
- CN209781636U CN209781636U CN201920421502.XU CN201920421502U CN209781636U CN 209781636 U CN209781636 U CN 209781636U CN 201920421502 U CN201920421502 U CN 201920421502U CN 209781636 U CN209781636 U CN 209781636U
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- China
- Prior art keywords
- bolt
- head
- ventilating
- bolt body
- outer cover
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- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Check Valves (AREA)
Abstract
The utility model relates to a modified ventilating bolt. The bolt comprises a bolt body and an outer cover, wherein the outer cover is detachably arranged at the head of the bolt body, a ventilation channel penetrating through the bolt body is arranged on the bolt body, the inner end of the ventilation channel extends to the head of the bolt body and is positioned in the outer cover, a ventilation port is formed in the head of the bolt body or the outer cover, and a one-way valve is arranged between the outer cover and the head of the bolt body, so that the ventilation channel can only be opened in one way. The utility model discloses a set up the check valve between the head of enclosing cover and bolt body, thereby make the utility model discloses the check valve can only open when exhausting and exhaust outward, but works as the utility model discloses when not exhausting, the check valve seals up ventilative passageway promptly, and water can't pass through ventilative passageway to improve ventilative bolt's waterproof performance, finally prolonged the life of gear box.
Description
Technical Field
The utility model relates to a ventilative part is particularly useful for the ventilative bolt of a modified on the gear box.
Background
in the existing gear box of the oxygen increasing machine or the marine diesel engine, when the gear box runs, the temperature rise of lubricating oil can cause the expansion of internal gas, and the gas is generally discharged out of the gear box through a ventilating bolt on the gear box so as to ensure that a dynamic oil seal of the gear box is not damaged.
Because the gear box of the equipment works in a water area environment for a long time, the existing ventilating bolt adopts a direct ventilating mode, the waterproof performance is poor, water easily enters the gear box from the outside through a ventilating channel of the ventilating bolt, so that lubricating oil in the gear box is emulsified, parts of the gear box rust, the lubricating and antifriction effects are reduced, and finally the service life of the gear box is sharply reduced and shortened. There is therefore a need for further improvements in existing gas permeable bolts.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple structure, reasonable, the ventilative bolt of improvement that waterproof performance is good.
The purpose of the utility model is realized like this:
The utility model provides a modified ventilating bolt, includes bolt body and enclosing cover, the enclosing cover can be dismantled the head of locating the bolt body, be equipped with the ventilative passageway of through bolt body on the bolt body, the inner of ventilative passageway extends to the head of bolt body and is located the enclosing cover, be equipped with ventilative mouthful on the head of bolt body or the enclosing cover, be equipped with the check valve between the head of enclosing cover and bolt body to make ventilative passageway can only one-way open, thereby make the utility model discloses the check valve can only be opened when exhausting, past exhaust, but works as the utility model discloses when not exhausting, the ventilative passageway is sealed promptly to the check valve, and water can't pass through ventilative passageway to air permeable bolt's waterproof performance has been improved.
The purpose of the utility model can also adopt the following technical measures to solve:
The outer side wall of the head of the bolt body is provided with external threads, the outer cover is a cover body with internal threads, and the outer cover is in threaded connection with the head of the bolt body. Of course, the utility model discloses a mode that the enclosing cover also can adopt the buckle is realized can dismantling with the bolt body and is connected.
The check valve comprises a sealing element and a return spring, the sealing element is arranged at the head of the bolt body and positioned at the inner end of the ventilation channel, and the return spring is arranged between the sealing element and the outer cover. When the gear box runs at a high speed, the gas in the gear box expands, when the pressure in the gear box is greater than the elastic force of the reset spring, the gas in the gear box can upwards jack the one-way valve, the one-way valve opens the ventilation channel, and the gas in the gear box is discharged through the ventilation channel and the ventilation port of the ventilation bolt in sequence, so that the exhaust of the gear box is realized. On the contrary, when the atmospheric pressure in the gear box is less than reset spring's elasticity, reset spring is pressing the check valve, and the inner of ventilative passageway is plugged up and sealed to the check valve, and water also can't enter into the gear box through ventilative bolt to avoid the lubricating oil emulsification and the spare part in the gear box to rust, lubricated antifriction effect descends, finally leads to the gear box life-span sharply to descend and shorten.
The air-permeable channel extends from the screw rod of the bolt body to the head.
The outer side wall of the head of the bolt body is provided with a limiting step and a ventilation groove, the limiting step is located at the lower end of the ventilation groove, the periphery of the outer cover abuts against the limiting step, and the lower end of the ventilation groove extends to the side wall of the limiting step to form the ventilation opening. When the outer cover screwed into the limiting step, the outer cover still does not shield the ventilation port, and gas in the gear box is discharged through the ventilation channel, the ventilation groove and the ventilation port in sequence.
The top surface of the sealing element is provided with a first spring positioning bulge, the lower end of the reset spring is sleeved on the first spring positioning bulge, and the inner bottom wall of the outer cover is provided with a second spring positioning bulge or a spring positioning groove, so that the reset spring is firm in fixation and convenient to install, and the sealing element is good in sealing effect and stable in sealing.
The bottom surface of the sealing element is provided with a sealing bulge, and the sealing bulge seals the inner end of the ventilation channel, so that the ventilation channel is sealed.
The sealing bulge is in a reversed round table shape, the inner end of the air channel is in a horn mouth shape, the taper of the sealing bulge and the taper of the inner end of the air channel are 60 degrees, the sealing bulge is matched with the inner end of the air channel in shape, so that the air channel can be better sealed, and the sealing effect is good.
The sealing element is spherical, and the inner end of the ventilation channel is in a bell mouth shape.
The ventilation groove is L-shaped.
The lateral wall of enclosing cover is equipped with anti-skidding burr to the workman of being convenient for screws up the enclosing cover.
The utility model has the advantages as follows:
The utility model discloses a set up the check valve between the head of enclosing cover and bolt body, thereby make the utility model discloses the check valve can only open when exhausting and exhaust outward, but works as the utility model discloses when not exhausting, the check valve seals up ventilative passageway promptly, and water can't pass through ventilative passageway to improve ventilative bolt's waterproof performance, finally prolonged the life of gear box.
Drawings
Fig. 1 is a schematic structural view of the improved ventilating bolt of the present invention.
Figure 2 is a cross-sectional view of the improved vent bolt of the present invention.
Fig. 3 is an exploded view of the improved air-permeable bolt of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
In a first embodiment, as shown in fig. 1 to 3, an improved air-permeable bolt includes a bolt body 11 and an outer cover 12, the outer cover 12 is detachably disposed at a head of the bolt body 11, an air-permeable passage 13 penetrating through the bolt body 11 is disposed on the bolt body 11, an inner end of the air-permeable passage extends to the head of the bolt body and is located in the outer cover, an air-permeable port 14 is disposed at a head 112 of the bolt body 11, and a check valve 10 is disposed between the outer cover 12 and the head 112 of the bolt body 11, so that the air-permeable passage 13 can only be opened in one direction. Of course, the vent opening may be provided in the outer cover 12.
As a more specific technical solution of the present invention.
The outer side wall of the head 112 of the bolt body 11 is provided with external threads, the outer cover is a cover body with internal threads, and the outer cover 12 is in threaded connection with the head 112 of the bolt body 11.
The check valve 10 includes a sealing member 15 and a return spring 16, the sealing member 15 is disposed at the head 112 of the bolt body 11 and at the inner end of the air-permeable passage 13, and the return spring 16 is disposed between the sealing member 15 and the outer cover 12.
The air-permeable channel 13 extends from the screw 111 of the bolt body 11 to the head 112.
The outer side wall of the head 112 of the bolt body 11 is provided with a limiting step 17 and a ventilation groove 18, the limiting step 17 is located at the lower end of the ventilation groove 18, the periphery of the outer cover abuts against the limiting step, and the lower end of the ventilation groove 18 extends to the side wall of the limiting step 17 to form the ventilation port 14. When the outer cover 12 is screwed into the limit step 17, the outer cover 12 still does not shield the ventilation opening 14, and the gas in the gear box is discharged through the ventilation channel 13, the ventilation groove 18 and the ventilation opening 14 in sequence.
The top surface of the sealing element 15 is provided with a first spring positioning bulge 19, the lower end of the return spring 16 is sleeved on the first spring positioning bulge 19, and the inner bottom wall of the outer cover 12 is provided with a second spring positioning bulge 20 or a spring positioning groove, so that the return spring 16 is fixed firmly and is convenient to install, and the sealing element 15 is good in sealing effect and stable in sealing.
The bottom surface of the sealing member 15 is provided with a sealing protrusion 21, and the sealing protrusion 21 seals the inner end of the ventilation channel 13.
The sealing bulge 21 is in a reversed round table shape, the inner end of the air passage 13 is in a horn mouth shape, and the sealing bulge 21 is matched with the inner end of the air passage 13 in shape, so that the air passage 13 can be better sealed, and the sealing effect is good.
The sealing member 15 is spherical, and the inner end of the ventilation channel 13 is flared.
The ventilation groove 18 is L-shaped.
the outer side wall of the outer cap 12 is provided with an anti-slip ridge 22 so as to facilitate the worker's screwing of the outer cap 12.
The utility model discloses the modified ventilating bolt is often used on the gear box of oxygen-increasing machine.
The utility model discloses a theory of operation: when the gear box runs at a high speed, the gas in the gear box expands, when the pressure of the air in the gear box is greater than the elastic force of the reset spring, the gas in the gear box can upwards jack the one-way valve 10, the one-way valve 10 opens the ventilation channel 13, and the gas in the gear box is discharged through the ventilation channel, the ventilation groove and the ventilation port 14 of the ventilation bolt in sequence, so that the exhaust of the gear box is realized. On the contrary, when the atmospheric pressure in the gear box is less than reset spring's elasticity, reset spring is pressing check valve 10, and check valve 10 blocks up and seals the inner of ventilative passageway 13, and water also can't enter into the gear box through ventilative bolt to avoid the lubricating oil emulsification and the spare part in the gear box to rust, lubricated antifriction effect descends, finally leads to the gear box life-span sharply to descend and shorten.
Claims (10)
1. The improved ventilating bolt is characterized in that a one-way valve is arranged between the outer cover and the head of the bolt body, so that the ventilating passage can only be opened in one direction.
2. The improved ventilating bolt as recited in claim 1, wherein the outer side wall of the head of the bolt body is provided with an external thread, the outer cover is a cover body with an internal thread, and the outer cover is in threaded connection with the head of the bolt body.
3. The improved venting bolt of claim 1 or 2 wherein said one-way valve includes a seal disposed at the head of the bolt body at the inner end of the venting passage and a return spring disposed between the seal and the outer cap.
4. The improved venting bolt of claim 3, wherein said venting passage extends from the shank to the head of the bolt body.
5. The improved ventilating bolt as recited in claim 3, wherein the outer side wall of the head of the bolt body is provided with a limiting step and a ventilating groove, the limiting step is located at the lower end of the ventilating groove, the periphery of the outer cover abuts against the limiting step, and the lower end of the ventilating groove extends to the side wall of the limiting step to form the ventilating opening.
6. The improved ventilating bolt as set forth in claim 3, wherein the sealing member has a first spring positioning protrusion on its top surface, the return spring has a lower end fitted over the first spring positioning protrusion, and the outer cover has a second spring positioning protrusion or a spring positioning groove on its inner bottom wall.
7. The improved ventilating bolt as set forth in claim 6, wherein said sealing member is provided at a bottom surface thereof with a sealing projection for sealing an inner end of the ventilating passage.
8. The improved breather bolt of claim 7, wherein said sealing bead is rounded and the inner end of said breather passage is flared.
9. the improved breather bolt of claim 7 wherein said seal is spherical and the inner end of said breather passage is flared.
10. The improved venting bolt of claim 5 wherein said venting grooves are L-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920421502.XU CN209781636U (en) | 2019-03-30 | 2019-03-30 | Improved ventilating bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920421502.XU CN209781636U (en) | 2019-03-30 | 2019-03-30 | Improved ventilating bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209781636U true CN209781636U (en) | 2019-12-13 |
Family
ID=68800550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920421502.XU Active CN209781636U (en) | 2019-03-30 | 2019-03-30 | Improved ventilating bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209781636U (en) |
-
2019
- 2019-03-30 CN CN201920421502.XU patent/CN209781636U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |