CN201982182U - Constant-pressure type exhaust braking butterfly valve - Google Patents
Constant-pressure type exhaust braking butterfly valve Download PDFInfo
- Publication number
- CN201982182U CN201982182U CN2011200752876U CN201120075287U CN201982182U CN 201982182 U CN201982182 U CN 201982182U CN 2011200752876 U CN2011200752876 U CN 2011200752876U CN 201120075287 U CN201120075287 U CN 201120075287U CN 201982182 U CN201982182 U CN 201982182U
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- pressure type
- valve body
- butterfly valve
- plunger
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Abstract
The utility model discloses a constant-pressure type exhaust braking butterfly valve; in the technical scheme, the constant-pressure type exhaust braking butterfly valve comprises a valve body with an exhaust path, and the valve body is provided with a valve block which is driven to rotate by a rock arm shaft and can close the exhaust path, and a control device for driving the rock arm shaft to rotate. The constant-pressure type exhaust braking butterfly valve is characterized in that: a pressure stabilizing opening is arranged on the valve block, and a plunger type unloading valve matched with the valve body is arranged on the valve body. The constant-pressure type exhaust braking butterfly valve has the beneficial effects that: in the constant-pressure type exhaust braking butterfly valve, as the valve body and the valve block have no eccentric structures, the processing is simple and the precision is easy to ensure; the rocker arm shaft for driving the valve block to rotate is processed simply, and the cost is low; the adjusting spring rate in the plunger type unloading valve can be calculated accurately, the pretightening force of the spring is adjustable, and can be adjusted correspondingly according to different engines, and the using range is wide.
Description
Technical field
The utility model relates to automobile auxiliary braking technical field, especially relates to a kind of constant pressure type exhaust brake butterfly valve that is used for the engine exhaust auxiliary braking.
Background technique
The exhaust brake butterfly valve of auxiliary braking all is housed in the high-power heavy-duty car vent systems, the moving butterfly valve of exhaust brake commonly used comprises the valve body of single-acting cylinder, valve block, installation valve block and single-acting cylinder, this exhaust brake butterfly valve only plays on-off action and can't regulate the exhaust back pressure of motor, after valve block is closed, the engine exhaust back pressure continues to raise, cause the motor associated components to damage easily, vehicle can't be travelled.
In addition, also has a kind of EVB exhaust brake butterfly valve in the prior art, though this EVB butterfly valve can be regulated the exhaust back pressure of motor automatically, but, because EVB exhaust brake butterfly valve is because the installation axis of valve block has skew with respect to the valve body center line, when valve block was closed, the acting surface that bears air pressure had big facet with respect to the rotating shaft center, under gas pressure, can produce an eccentric force, eccentric force makes torsion spring produce certain windup-degree, drives valve block and opens, off-load, therefore, the vital part of EVB butterfly valve is a torsion bar spring, hardness after its material and the heat treatment is crucial, and the hardness after the heat treatment is a value range, different hardness, its warping force is different, be difficult to accurate grasp, if torsion bar spring deforms, this butterfly valve control fails then.In addition, owing to there is eccentric existence, the requirement on machining accuracy of valve body and valve block is higher, and processing cost height, efficient are low.At above shortcoming, invented this constant pressure type exhaust brake butterfly valve, this butterfly valve.
Summary of the invention
The purpose of this utility model is exactly the shortcoming at prior art, and provide a kind of off-centre that do not have, machining accuracy is easy to guarantee, constant pressure type exhaust brake butterfly valve easy to adjust, the technological scheme that adopts is: a kind of constant pressure type exhaust brake butterfly valve, comprise valve body with exhaust passage, the valve block that rotates and can seal described exhaust passage under pitman arm shaft drives is installed on the valve body, and the Effector of the described pitman arm shaft rotation of driving, it is characterized in that: also have the voltage stabilizing mouth on the described valve block, described valve body is provided with plunger type unloading valve with matching.
The technical solution of the utility model also has: described plunger type unloading valve comprise be installed on the valve body and with the vertically arranged plunger of the center line of exhaust passage, one end of described plunger is inserted in the described voltage stabilizing mouth, the other end of described plunger is connected with the adjustment spring, the other end of described adjustment spring connects regulates plug, and described plunger type unloading valve also is included in out the bleeder port on described valve body.
The technical solution of the utility model also has: described Effector comprises single-acting cylinder, with the rocking arm that the piston rod of described single-acting cylinder is connected, is hinged with described pitman arm shaft on the described rocking arm.
The technical solution of the utility model also has: described single-acting cylinder is fixed on the described valve body by supporting plate.
The technical solution of the utility model also has: described exhaust passage comprises inlet end and the outlet side that is connected together.
The technical solution of the utility model also has: described voltage stabilizing mouth is a rectangle.
The beneficial effects of the utility model are: precision is processed simply and be easy to guarantee to this constant pressure type exhaust brake butterfly valve therefore owing to valve body, valve block do not adopt eccentric structure; The pitman arm shaft processing that drives the valve block rotation is simple, with low cost; But the adjustment spring rate accurate Calculation in the plunger type unloading valve, initial tension of spring is adjustable, can adjust accordingly according to different motors, and using scope is wide in range.
Description of drawings
Accompanying drawing 1 is a plan view of the present utility model, and accompanying drawing 2 is its plan views, wherein, the 1st, single-acting cylinder, the 2nd, supporting plate, the 3rd, rocking arm, the 4th, valve body, the 5th, valve block, the 6th, pitman arm shaft, the 7th, voltage stabilizing mouth, the 8th, bleeder port, the 9th, plunger, the 10th, adjust spring, the 11st, regulate plug.
Embodiment
Below in conjunction with embodiment, the utility model is specifically described.This constant pressure type exhaust brake butterfly valve comprises the valve body 4 with exhaust passage, but be equipped with on the valve body 4 under pitman arm shaft 6 drives and rotate the also valve block 5 of closes vent passage, and the Effector of driving pitman arm shaft 6 rotations, also have voltage stabilizing mouth 7 on the valve block, the voltage stabilizing mouth can be rectangle, valve body 4 is provided with plunger type unloading valve with matching, the plunger type unloading valve comprise be installed on the valve body 4 and with the vertically arranged plunger 9 of the center line of exhaust passage, one end of plunger 9 is inserted in the voltage stabilizing mouth 7, and with voltage stabilizing mouth 7 close fit, the other end of plunger 9 is connected with adjusts spring 10, the other end of adjusting spring 10 connects regulates plug 11, and the plunger type unloading valve also is included in out the bleeder port 8 on valve body 4.Effector comprises single-acting cylinder 1, and the rocking arm 3 with the piston rod of single-acting cylinder 1 is connected is hinged with pitman arm shaft 6 on the rocking arm 3, and pitman arm shaft 6 rotates, and can drive valve block 5 and rotate, and realizes the Guan Hekai of exhaust passage.
During use, after valve block 5 was closed, the opening 7 on the valve block 5 fitted tightly with plunger 9 upper ends, and the bleeder port 8 that the while Pneumatic pipe cleaner is crossed on the valve body 4 acts on plunger 9 end faces, and butterfly valve inlet end partial pressure raises.When pressure is increased to when adjusting the spring rate of spring 10, plunger 9 promotes to adjust springs 10 and moves down, and the gap occurs between the opening 7 on the upper end of plunger 9 and the valve block 5, and the Pneumatic pipe cleaner of butterfly valve inlet end is crossed this gap off-load, and pressure lowers thereupon; When the pressure of butterfly valve inlet end when adjusting the spring rate of spring 10, adjust spring 10 and promote plungers 9 and move upward, the opening 7 on plunger 9 upper ends and the valve block 5 fits tightly, and makes butterfly valve inlet end and outlet side pass through valve block 5 and plunger 9 is isolated fully.This constant pressure type exhaust brake butterfly valve is mainly realized regulating the engine exhaust back pressure automatically by moving up and down of plunger 9, and it is guaranteed in allowed limits, and the size of engine exhaust back pressure can realize by the pretightening force of adjusting spring 10.
Certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model also is not limited only to above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also belong to protection domain of the present utility model.
Claims (6)
1. constant pressure type exhaust brake butterfly valve, comprise valve body with exhaust passage, the valve block that rotates and can seal described exhaust passage under pitman arm shaft drives is installed on the valve body, and the Effector of the described pitman arm shaft rotation of driving, it is characterized in that: also have the voltage stabilizing mouth on the described valve block, described valve body is provided with plunger type unloading valve with matching.
2. according to the described constant pressure type exhaust brake of claim 1 butterfly valve, it is characterized in that: described plunger type unloading valve comprise be installed on the valve body and with the vertically arranged plunger of the center line of exhaust passage, one end of described plunger is inserted in the described voltage stabilizing mouth, the other end of described plunger is connected with the adjustment spring, the other end of described adjustment spring connects regulates plug, and described plunger type unloading valve also is included in out the bleeder port on described valve body.
3. according to the described constant pressure type exhaust brake of claim 1 butterfly valve, it is characterized in that: described Effector comprises single-acting cylinder, with the rocking arm that the piston rod of described single-acting cylinder is connected, is hinged with described pitman arm shaft on the described rocking arm.
4. according to the described constant pressure type exhaust brake of claim 3 butterfly valve, it is characterized in that: described single-acting cylinder is fixed on the described valve body by supporting plate.
5. according to the described constant pressure type exhaust brake of claim 1 butterfly valve, it is characterized in that: described exhaust passage comprises inlet end and the outlet side that is connected together.
6. according to the described constant pressure type exhaust brake of claim 1 butterfly valve, it is characterized in that: described voltage stabilizing mouth is a rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200752876U CN201982182U (en) | 2011-03-22 | 2011-03-22 | Constant-pressure type exhaust braking butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200752876U CN201982182U (en) | 2011-03-22 | 2011-03-22 | Constant-pressure type exhaust braking butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201982182U true CN201982182U (en) | 2011-09-21 |
Family
ID=44609645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200752876U Expired - Fee Related CN201982182U (en) | 2011-03-22 | 2011-03-22 | Constant-pressure type exhaust braking butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201982182U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615326A (en) * | 2013-11-29 | 2014-03-05 | 东风小康汽车有限公司重庆分公司 | Exhaust butterfly valve for auxiliary braking of automobile |
-
2011
- 2011-03-22 CN CN2011200752876U patent/CN201982182U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615326A (en) * | 2013-11-29 | 2014-03-05 | 东风小康汽车有限公司重庆分公司 | Exhaust butterfly valve for auxiliary braking of automobile |
| CN103615326B (en) * | 2013-11-29 | 2016-02-24 | 东风小康汽车有限公司重庆分公司 | car auxiliary brake exhaust butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20160322 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |