CN203272823U - Bitumen spraying control valve - Google Patents
Bitumen spraying control valve Download PDFInfo
- Publication number
- CN203272823U CN203272823U CN 201320295601 CN201320295601U CN203272823U CN 203272823 U CN203272823 U CN 203272823U CN 201320295601 CN201320295601 CN 201320295601 CN 201320295601 U CN201320295601 U CN 201320295601U CN 203272823 U CN203272823 U CN 203272823U
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- Prior art keywords
- sealing
- connecting pipe
- cylinder
- pitch
- nut
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Abstract
The utility model discloses a bitumen spraying control valve which comprises a cylinder, a connecting pipe and a bitumen spraying nozzle. A sealing ring is assembled inside a seam allowance of a connecting nut on the cylinder, the connecting pipe is sleeved with a sealing ring, the connecting pipe penetrates through a bitumen entering pipe and then is in butt joint with a piston rod on the cylinder, and then the connecting pipe is fastened and squeezed through the connecting nut. A sealing conical head is arranged at the tail end of the piston rod, and the bitumen spraying nozzle is assembled on an exposed connecting pipe of the bitumen entering pipe and then is connected with a snap spring after being fastened by a nut. According to the technical scheme, threads are used for connection, sealing portions are changed, sealing pieces are assembled with the connecting pipe, the sealing pieces are deformed after being fastened and squeezed by the nut, a clearance between the connecting pipe and a hole is filled with remaining deformation materials, and therefore sealing performance is improved, and maintenance is convenient. The piston rod is connected with the sealing conical head through an elastic pin, the sealing conical head can have a certain moving range, insufficient machining precision can be compensated, and the valve is made to be closed reliably.
Description
Technical field:
The utility model relates to a kind of control valve, is specially adapted to the sprinkling that highway maintenance equipment is controlled pitch.
Background technique:
Existing most domestic asphalt spray control valve mostly is comprised of cylinder, guide rod, connecting tube, nut, nozzle, because the sprinkling of pitch is all to work under the condition of high temperature, require between each parts to connect reliable, maintainalbility is good, do not allow seepage after valve closing.But the connecting tube on present domestic asphalt distribution valve is connected the employing welding with the pitch main line, has plenty of to be threaded.These two kinds of Placements have following shortcoming; 1, be welded to connect and have pitch main line distortion, connecting tube does not have maintenance, and integrated artistic is poor, complicate fabrication process; 2, be threaded, its structure is to be squeezed in pitch with the nut end face Sealing to enter on main line two planes, due to the main line employing is the shape material, do not guarantee the parallelism in two planes, always seepage occurs, moreover domestic asphalt distribution valve mostly adopts cone seal, long and machining accuracy is inadequate due to the piston rod bar, perhaps distortion after the connecting tube welding, thus cause sealability bad, be prone to seepage.
Summary of the invention:
Task of the present utility model is to propose a kind of good seal performance, a kind of asphalt spray control valve easy to maintenance.
Task of the present utility model is completed like this, a kind of asphalt spray control valve, it comprises cylinder, connecting tube and pitch nozzle, it is characterized in that: be equipped with seal ring in the attaching nut's seam on cylinder, on connecting tube, cover has seal ring to pass pitch to enter pipe and dock with piston rod on cylinder and pass through afterwards the fastening extruding of attaching nut, described piston-rod end is equipped with the sealing conehead, and the pitch nozzle is assemblied in pitch and enters on the connecting tube that pipeline exposes and connect with jump ring after fastening nuts.After described seal ring stress deformation, connecting tube and pitch are entered the gap sealing of pipeline.
The utlity model has following effect: the technical solution of the utility model is to adopt to be threaded, change and seal the position, the assembling of Sealing and connecting tube, fastening squeeze sealing member distortion through nut, unnecessary deformable material is filled in the gap in connecting tube and hole, thereby improved sealability, reached easy to maintenance; Piston rod adopts resilient key to be connected with the sealing conehead, has guaranteed that the sealing conehead has certain the sphere of activities, can compensate the deficiency of machining accuracy, and valve is reliably closed.
Description of drawings:
Fig. 1 is structural representation of the present utility model.
Drawing explanation: 1, cylinder, 2, Sealing, 3, connecting tube, 4, pitch enters pipeline, 5, piston rod, 6, the sealing conehead, 7, the pitch nozzle, 8, nut.
Embodiment:
describe embodiment in detail in conjunction with above accompanying drawing, on the attaching nut's 8 of cylinder 1 seam, Sealing 2 is housed, on connecting tube 3, cover has Sealing 2 to pass pitch to enter pipeline 4, the other end of connecting tube exposes the other end that pitch enters pipeline, piston rod 5 on described cylinder injects pitch and enters in the hole of pipeline connecting pipe, by nut 8 cylinder 1 and the fastening extruding of connecting tube 3, sealed ring deformation after stressed enters connecting tube and pitch the gap sealing of pipe, after described piston-rod end is equipped with sealing conehead 6 use fastening nuts, jump ring connects, sealing conehead after connection has certain the sphere of activities, pitch nozzle 7 is assemblied in pitch and enters on the connecting tube 3 that pipeline exposes, owing to having taked above technological scheme, thereby it is poorly sealed to have solved prior art, the problem of easy to leak.
Claims (2)
1. asphalt spray control valve, it comprises cylinder, connecting tube and pitch nozzle, it is characterized in that: be equipped with seal ring in the attaching nut's seam on cylinder, on connecting tube, cover has seal ring to pass pitch to enter pipe and dock with piston rod on cylinder and pass through afterwards the fastening extruding of attaching nut, described piston-rod end is equipped with the sealing conehead, and the pitch nozzle is assemblied in pitch and enters on the connecting tube that pipeline exposes and connect with jump ring after fastening nuts.
2. a kind of asphalt spray control valve according to claim 1 is characterized in that: the gap sealing that after described seal ring stress deformation, connecting tube and pitch is entered pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320295601 CN203272823U (en) | 2013-05-28 | 2013-05-28 | Bitumen spraying control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320295601 CN203272823U (en) | 2013-05-28 | 2013-05-28 | Bitumen spraying control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203272823U true CN203272823U (en) | 2013-11-06 |
Family
ID=49503236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320295601 Expired - Lifetime CN203272823U (en) | 2013-05-28 | 2013-05-28 | Bitumen spraying control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203272823U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345298A (en) * | 2019-07-02 | 2019-10-18 | 广东冠粤路桥有限公司 | A kind of anti-blocking motor-driven valve of cement slurry and automatic water jetting mud device |
-
2013
- 2013-05-28 CN CN 201320295601 patent/CN203272823U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345298A (en) * | 2019-07-02 | 2019-10-18 | 广东冠粤路桥有限公司 | A kind of anti-blocking motor-driven valve of cement slurry and automatic water jetting mud device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |