CN104963850B - A kind of means of deflation - Google Patents
A kind of means of deflation Download PDFInfo
- Publication number
- CN104963850B CN104963850B CN201510269290.4A CN201510269290A CN104963850B CN 104963850 B CN104963850 B CN 104963850B CN 201510269290 A CN201510269290 A CN 201510269290A CN 104963850 B CN104963850 B CN 104963850B
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- Prior art keywords
- counterbore
- deflation
- bleed screw
- seal
- air channel
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Abstract
The present invention relates to a kind of means of deflation, the exhaust applied to hydraulic plumbing system.The means of deflation includes bleed screw（1）, the bleed screw is provided with external screw thread（3）, the bleed screw inside is provided with steam vent（2）, the lower end of the bleed screw is provided with counterbore（7）, the counterbore is communicated with steam vent, and diameter of the diameter more than steam vent of the counterbore；The inwall of the counterbore（15）With bottom hole surface（16）It is provided with some air channels（5）, the air channel connects from the end face of bleed screw lower end via the inwall of counterbore, bottom hole surface with steam vent；Also include the seal in counterbore（8）, the seal and counterbore are interference fitted.The means of deflation of the present invention, simple in construction, the structural stability of air channel is good, is unlikely to deform in the case of normal be pressurized, the service life of means of deflation is longer.
Description
Technical field
The present invention relates to a kind of means of deflation, the exhaust applied to hydraulic plumbing system.
Background technology
Fluid pressure line deflation structure uses metal machined piece in current industry, and bleeder screw and body pass through rigid interference
Cooperation reaches sealing effectiveness, and this structure requires high to machining accuracy, based on being the linear of interference fit between correlated parts
Sealing, and have cross through hole again on bleed screw, easy undue force causes to squeeze during axially loaded, maintenance or use
Compressive strain, channel blockage, influence exhaust effect.
The content of the invention
The technical problem to be solved in the present invention is to solve on bleed screw in the prior art cross through hole in axially loaded, dimension
Repair or use during easily undue force cause crimp, channel blockage, influence exhaust effect defect.
In order to solve the above-mentioned technical problem, the technical scheme that the present invention is provided is as follows：A kind of means of deflation, including deflation spiral shell
Nail, the bleed screw is provided with inside external screw thread, the bleed screw and is provided with steam vent, and the lower end of the bleed screw is provided with
Counterbore, the counterbore is communicated with steam vent, and diameter of the diameter more than steam vent of the counterbore；The inwall of the counterbore and hole
Basal surface is provided with some air channels, the air channel from the end face of bleed screw lower end via the inwall of counterbore, bottom hole surface with
Steam vent is connected；Also include the seal in counterbore, the seal is interference fitted with counterbore.
Further, the excircle of the seal is provided with some reinforcements, and the quantity of the reinforcement is less than or waited
In under the quantity of air channel, confined state, the reinforcement is located in the air channel.
Further, it is additionally provided with the gap for being enough to ensure that smooth in exhaust between the reinforcement and air channel.
Further, in the case where the quantity of the reinforcement is less than air channel quantity, the reinforcement and air channel
Interference fit.
Further, it is additionally provided with pad between the seal and bottom hole surface.
Further, the bleed screw is moulding, and the moulding is molded by the mixing material of nylon and glass fibre
Form.
Further, it is additionally provided with the excircle of the bleed screw in annular seal groove, the seal groove provided with sealing
Circle, the sealing ring is interference fitted with annular seal groove.
Further, it is additionally provided with the excircle of the bleed screw in annular seal groove, the seal groove provided with sealing
Circle, the sealing ring is interference fitted with annular seal groove.
Further, end face of the seal away from steam vent one end is provided with boss.
The means of deflation of the present invention, simple in construction, the structural stability of air channel is good, not variable in the case of normal be pressurized
Shape, the service life of means of deflation is longer.
Brief description of the drawings
Fig. 1 is the structural representation of the present embodiment means of deflation；
Fig. 2 is the structural representation of the present embodiment bleed screw；
Fig. 3 looks up enlarged diagram for bleed screw shown in Fig. 2；
Fig. 4 is the structural representation that first embodiment means of deflation coordinates with the pump housing；
Fig. 5 is the structural representation that second embodiment means of deflation coordinates with the pump housing.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In the description of the invention, it is to be understood that term " on ", " under ", "front", "rear", " interior ", " outer " etc. are indicated
Orientation or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of description the present invention and simplification retouch
State, rather than indicate or imply that the device or element of meaning there must be specific orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, be integrally connected or be detachably connected；Can be with
It is the connection of two element internals；Can be joined directly together, can also be indirectly connected to by intermediary, for the general of this area
For logical technical staff, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
As shown in figure 1, a kind of means of deflation of the present embodiment includes bleed screw 1, as shown in Fig. 2 on the bleed screw 1
Provided with external screw thread 3, vertical steam vent 2 is provided with inside bleed screw.Further, counterbore 7 is provided with the lower end of bleed screw,
As the special feature of the present embodiment, above-mentioned counterbore 7 is interconnected with steam vent 2, and the diameter of counterbore 7 is more than exhaust
The diameter in hole 2, step surface, i.e. bottom hole surface 16 are formed in counterbore 7 and the joint of steam vent 2.
As Figure 1-3, in the means of deflation of the present embodiment, if the inwall 15 of counterbore 7 and bottom hole surface 16 are provided with
Dry air channel 5, the air channel 5 is from the end face of the lower end of bleed screw 1 via the inwall 15 of counterbore 7, bottom hole surface 16 and steam vent 2
Connection.Further, seal 8 is provided with counterbore 7, the seal 8 is elastic component, circumferential direction is matched somebody with somebody with the interference of counterbore 7
Close.Because seal 8 is elastic component, in seal process, larger axial compressive force is born, in order to prevent connecing with bottom hole surface 16
Tactile seal end is pressed into the air channel 5 on bottom hole surface 16, and then influences exhaust, bottom hole surface 16 and seal it
Between be additionally provided with pad 10, the pad 10 be rigid structure.
In the means of deflation of the present embodiment, annular seal groove 6 is additionally provided with the excircle of the bleed screw 1, at this
Sealing ring 4 is provided with seal groove 6, the sealing ring 4 is interference fitted with annular seal groove 6.In the present embodiment, the shape of sealing ring 4
Formula is not limited, and conventional use of O-ring seal, special-shaped seal ring etc. can be with the present embodiment.
As the first embodiment of the present embodiment, as shown in figure 4, the height of seal 8 is less than or equal to counterbore 7
Depth., it is necessary to which the mounting hole bottom hole that the pump housing 11 lays means of deflation is provided with collar flange 13, the pump housing on the premise of such a structure
Passage 12 is communicated to the upper surface of collar flange 13.The external diameter of above-mentioned collar flange 13 is less than the internal diameter of counterbore 7, in order to seal
Effect more preferably, is provided with boss 9 on end face of the seal 8 away from the one end of steam vent 2, and the diameter of the boss 9 is slightly less than the pump housing and led to
The diameter of stomata 12.
As second of embodiment of the present embodiment, as shown in figure 5, the height of seal 8 is higher than the depth of counterbore 7.
The pump housing 11 matched with the means of deflation of the structure, mounting hole bottom hole is plane.For sealing effectiveness more preferably, in seal
8 end faces away from the one end of steam vent 2 are provided with boss 9, and the diameter of the boss 9 is slightly less than the diameter of pump housing passage 12.
Above two embodiment, although the structure of means of deflation and the pump housing slightly difference, the course of work is with using effect
Fruit and indistinction.Means of deflation is connected through a screw thread in the mounting hole for being rotatably connected in the pump housing, during screwing bleed screw, sealing
The boss 9 of part 8 enters in pump housing passage 12, under pressure, the aperture of the lower surface of seal to pump housing passage 12
It is fully sealed.When needing release or exhaust, exhaust bolt 1 is unscrewed, the sealing between seal 8 and pump housing passage 12 is lost
In the case of effect, gas or liquid inside the pump housing 11 under pressure, as shown in arrow in Fig. 4, Fig. 5, along the inwall of counterbore 7
15 and bottom hole surface 16 on air channel 5 enter steam vent 2, and then discharged by steam vent 2.
Bleed screw 1 in above-mentioned means of deflation is moulding, and the moulding is mixed by nylon and glass fibre (30%)
Condensation material is molded.Air channel 5 in its counterbore 7 is to be molded, without carrying out secondary operation, technique letter to moulding
It is single, and air channel is in the case of compression, it will not also produce because deformation causes to ventilate not smooth defect.
Further, as shown in figure 1, being additionally provided with some reinforcements 14 on the excircle of the seal 8 of the present embodiment, it should add
The quantity of strengthening tendons 14 is less than or equal under the quantity of air channel 5, confined state, and above-mentioned reinforcement 14 is respectively positioned on corresponding ventilation
In groove 5.It should be noted that the set-up mode of reinforcement is not unique formula, one of which embodiment is, the reinforcement
Circumferential size is less than the radial dimension of air channel 5, although reinforcement is located in air channel, but is also set between reinforcement and air channel
There is the gap for being enough to ensure that smooth in exhaust, have no effect on exhaust, in such a embodiment, the quantity of reinforcement 14 is less than or waited
Can be with the quantity of air channel 5.
Another embodiment, reinforcement 14 is interference fit with air channel, is had no between reinforcement and air channel logical
Gas gap, such a embodiment, it is desirable to which the quantity of reinforcement 14 is necessarily less than the quantity of air channel, the exhaust of hydraulic system passes through
The air channel for being not provided with reinforcement is realized, it is generally the case that the quantity of reinforcement is less than or equal to the half of air channel quantity.
In the present embodiment, above-mentioned reinforcement not only increases the intensity of seal, and when installing seal from lead
To effect.After installation, reinforcement also plays the role of positioning, and prevents seal from being rotated in counterbore.
In a word, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in the present invention
Spirit and principle within any modifications, equivalent substitutions and improvements for being made etc., should be included in protection scope of the present invention it
It is interior.
Claims (9)
1. a kind of means of deflation, including bleed screw（1）, the bleed screw is provided with external screw thread（3）, in the bleed screw
Portion is provided with steam vent（2）, it is characterised in that the lower end of the bleed screw is provided with counterbore（7）, the counterbore and steam vent phase
It is logical, and diameter of the diameter more than steam vent of the counterbore；The inwall of the counterbore（15）With bottom hole surface（16）If provided with
Dry air channel（5）, the air channel connects from the end face of bleed screw lower end via the inwall of counterbore, bottom hole surface with steam vent；
Also include the seal in counterbore（8）, the seal and counterbore are interference fitted.
2. according to the means of deflation described in claim 1, it is characterised in that the excircle of the seal is strengthened provided with some
Muscle（14）, the quantity of the reinforcement is less than or equal under the quantity of air channel, confined state, and the reinforcement is located at described logical
In air drain.
3. according to the means of deflation described in claim 2, it is characterised in that be additionally provided with and be enough between the reinforcement and air channel
Ensure the gap of smooth in exhaust.
4. according to the means of deflation described in claim 2, it is characterised in that be less than air channel quantity in the quantity of the reinforcement
In the case of, the reinforcement is interference fitted with air channel.
5. according to the means of deflation described in claim any one of 1-4, it is characterised in that between the seal and bottom hole surface
It is additionally provided with pad（10）.
6. according to the means of deflation described in claim 5, it is characterised in that the bleed screw is moulding, the moulding by
The mixing material of nylon and glass fibre is molded.
7. according to the means of deflation described in claim any one of 1-4, it is characterised in that on the excircle of the bleed screw also
Provided with annular seal groove（6）, the seal groove is interior to be provided with sealing ring（4）, the sealing ring and annular seal groove are interference fitted.
8. according to the means of deflation described in claim 5, it is characterised in that be additionally provided with annular on the excircle of the bleed screw
Seal groove（6）, the seal groove is interior to be provided with sealing ring（4）, the sealing ring and annular seal groove are interference fitted.
9. according to the means of deflation described in claim 6 or 8, it is characterised in that end of the seal away from steam vent one end
Face is provided with boss（9）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510269290.4A CN104963850B (en) | 2015-05-25 | 2015-05-25 | A kind of means of deflation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510269290.4A CN104963850B (en) | 2015-05-25 | 2015-05-25 | A kind of means of deflation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104963850A CN104963850A (en) | 2015-10-07 |
| CN104963850B true CN104963850B (en) | 2017-08-15 |
Family
ID=54217905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510269290.4A Active CN104963850B (en) | 2015-05-25 | 2015-05-25 | A kind of means of deflation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104963850B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201241312A (en) * | 2007-09-07 | 2012-10-16 | Chao-Fou Hsu | Compressing diaphragm pump having automatic air expelling and pressure abnormal-preventing features for spray use |
| CN202266409U (en) * | 2011-10-24 | 2012-06-06 | 山东双轮股份有限公司 | Air exhaust plug for liquid pump |
| CN202326187U (en) * | 2011-12-02 | 2012-07-11 | 重庆水泵厂有限责任公司 | Mechanical automatic exhaust valve |
| TW201435213A (en) * | 2013-03-01 | 2014-09-16 | Homge Machinery Ind Co Ltd | Ventilation device for external booster pump |
| CN203321807U (en) * | 2013-06-15 | 2013-12-04 | 沃德富泵业(无锡)有限公司 | Exhaust device for water pump |
| CN203453045U (en) * | 2013-07-18 | 2014-02-26 | 江苏亿美电器有限公司 | Exhaust structure of pool filter pump |
| CN204783617U (en) * | 2015-05-25 | 2015-11-18 | 浙江诸暨万宝机械有限公司 | Air bleeder |
-
2015
- 2015-05-25 CN CN201510269290.4A patent/CN104963850B/en active Active
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| Publication number | Publication date |
|---|---|
| CN104963850A (en) | 2015-10-07 |
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Address after: 311835 Industrial Zone of Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Wanan Zhiyu Automobile Control System Co.,Ltd. Address before: 311835 Industrial Zone of Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG ZHUJI MANPOWER MACHINERY CO.,LTD. |
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