CN206129419U - Constant voltage exhaust brake butterfly valve - Google Patents
Constant voltage exhaust brake butterfly valve Download PDFInfo
- Publication number
- CN206129419U CN206129419U CN201621155106.XU CN201621155106U CN206129419U CN 206129419 U CN206129419 U CN 206129419U CN 201621155106 U CN201621155106 U CN 201621155106U CN 206129419 U CN206129419 U CN 206129419U
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- CN
- China
- Prior art keywords
- valve
- butterfly valve
- pressure regulating
- pressure
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a constant voltage exhaust brake butterfly valve, includes valve body and the valve shaft of eccentric settings in the valve body inner chamber, and the valve block is installed on valve shaft, and the braking butterfly valve includes the pressure regulating part, and the pressure regulating part includes: the support of setting on the valve body surface, rotate the pendulum rod of being connected with the support, install the pressure regulating spring unit on the pendulum rod, pressure regulating spring unit includes pressure regulating spring and pressure regulating part, the clamp plate, the rotatable connection of clamp plate is on the valve block, the exhaust hole, the exhaust hole can be opened or close in the rotation of clamp plate. The exhaust hole is opened or closes in the rotation of this butterfly valve clamp plate to change the size of opening required exhaust backpressure in the exhaust hole through pressure regulating spring on the pendulum rod, reach the purpose of pressure regulating, use the pressure regulating spring to expose as pressure regulation member, pressure regulating spring, its mounted position leaves the high -temperature region totally to avoided high temperature and carbon deposit to the influence of pressure regulating, and be convenient for the spring the maintenance with in time change.
Description
Technical field
This utility model is related to a kind of car auxiliary brake technical field, more particularly, to a kind of constant pressure exhaust brake butterfly
Valve.
Background technology
Exhaust brake butterfly valve is arranged in the exhaustor of large-scale truck, is the main portion for realizing electromotor auxiliary braking
Part.The structure of constant pressure exhaust brake butterfly valve mainly has three kinds of forms at present, and the first is torsion bar shaft adjustment structure, and second is post
Plug, spring pressure adjusting structure, the third is Composite cylinder formula structure.
In torsion bar shaft adjustment structure, valve body, valve block are eccentric design, and valve shaft, should according to torsion bar structure design
It is a slender axles in the middle of axle, one end is fixed with rivet with valve block, and the other end is connected to bear cylinder thrust with rocking arm.When butterfly valve work
When making, cylinder promotes rocking arm to swing, and band moving valve plate first is closed, and valve block closes rear axle with rocking arm connection end relative to fixing end
Rivet twists deformation, produces axle and reverses pretightning force, and the size of the power receives the restriction in exhaust brake gap, when aerofluxuss are carried on the back
When pressure no more than sets pressure, the moment of torsion of its countershaft generation can not overcome the torsion pretightning force of axle, and valve block is still in closed mode；
And when exhaust back pressure is more than setting pressure, the moment of torsion of its countershaft generation can overcome the torsion pretightning force of axle, now axle is consolidated
Fixed end（Rivet）Relative to one angle of its rocking arm end turn-back, making valve block open certain interval carries out pressure release；When aerofluxuss are carried on the back
When pressure is gradually decreased to less than setting pressure, valve block is again switched off, and so circulates work, and exhaust back pressure is controlled in design pressure
In the range of.
Second pressure adjusting structure is that, located at valve block bottom, pressure relief opening device includes that the first pressure relief opening, second let out by pressure relief opening
The pressure release passage of pressure mouth and the first pressure relief opening of connection and the second pressure relief opening, regulator are connected with pressure release passage, regulator
By plunger（Or steel ball）, pressure spring, spring base, gland composition.When electromotor needs braking, cylinder promotes bindiny mechanism to make
Exhaust passage is closed by valve block, now produces exhaust back pressure, and when exhaust back pressure reaches setting value, air pressure is by plunger（Or steel ball）
Push down on, gas is discharged by pressure release passage, when back pressure is less than setting value, pressure spring is by plunger（Or steel ball）Push up,
So as to by channel enclosed between the first pressure relief opening and the second pressure relief opening, raising back pressure, reaching setting value, constant pressure aerofluxuss system is reached
Dynamic purpose.
The pressure adjusting structure of both the above structure is due in high-temperature area（In the near zone of exhaust passage）, it is being subject to
Under the influence of high temperature and carbon distribution effect, there is obvious exhaustion in exhaust back pressure, braking effect will weaken.
The third is the Composite cylinder structure that regulator and cylinder are integrated into one, and valve block, valve body are still set for bias
Meter, valve shaft is axis structure, and valve block and axle are fixed with pair rivets, and Composite cylinder adopts dual-piston structure, by main piston and pair
Piston two parts are constituted, and auxiliary piston is mounted in main piston facade, and pressure spring is mounted between main piston and auxiliary piston, cylinder activation pressure
Contracting air, drives piston rod to move out, valve block is closed after main piston stress, as valve block is eccentric structure, when aerofluxuss are carried on the back
When pressure is more than setting value, valve block is rotated under eccentric force effect, drives cylinder piston rod by rocker arm shaft, yoke, bearing pin secondary
Piston is moved relative to main piston（Main piston is spacing by cylinder cap, transfixion）, pressure spring is compressed, now valve block opens one
Fixed gap carries out pressure release, exhaust back pressure reduce after auxiliary piston return under spring force, valve block is closed, such circulation industrial
Make.Constant pressure butterfly valve as disclosed in the application for a patent for invention of Application No. 201210366063.X, the valve body and valve block of the butterfly valve
Design for centering type, rotating shaft is connected on the push rod of cylinder assembly, between the first stage piston and second piston in cylinder, be provided with tune
Pressing spring, the advantage of the pressure spring is：Away from the high-temperature region of exhaust passage, compared to above two pressure adjusting structure, system
Dynamic effect is relatively stable, but pressure spring is located at cylinder interior, and spring is difficult to replacing in time after deforming；Pressure regulation motility
Difference.
The content of the invention
The purpose of this utility model is to overcome shortcoming present in prior art, there is provided a kind of constant pressure exhaust brake butterfly
Pressure spring is arranged on the outer surface of valve body for valve, the butterfly valve, thoroughly to avoid impact of the exhaust high temperature area to pressure spring, and
It is easy to the timely replacing of spring, the technical scheme of employing to be：A kind of constant pressure exhaust brake butterfly valve, including valve body and be eccentrically set on
Valve shaft in the body cavity, valve block are arranged on the valve shaft, it is characterised in that：The braking butterfly valve includes pressure regulation
Part, the voltage regulation part include：The bearing being arranged on the valve outer surface；The fork being connected is rotated with the bearing；
Pressure spring component on the fork, the pressure spring component include pressure spring and voltage regulation part；Pressing plate, institute
State pressing plate to be rotatably coupled on the valve block；Steam vent, the rotation of the pressing plate can be opened or close the steam vent.
Technical characteristic of the present utility model also has：Stepped hole is provided with the valve outer surface, the bearing is arranged on institute
State in stepped hole.
Technical characteristic of the present utility model also has：Cannelure is provided with the fork, is provided with the cannelure described
Pressure spring, the voltage regulation part are flange face bolt, and one end of the pressure spring is resisted against on the flange face bolt, institute
State flange face bolt to be connected on the valve body.
Technical characteristic of the present utility model also has：The fork is connected in the bearing by straight pin II.
Technical characteristic of the present utility model also has：The braking butterfly valve also includes cylinder, and the cylinder is arranged on support group
On part, the carriage assembly is fixedly connected on the valve body.
Technical characteristic of the present utility model also has：The piston rod of the cylinder is connected with yoke, and the yoke is led to rocking arm
Cross bearing pin and form hinges, and spacing axle block card is provided with the hinges.
Technical characteristic of the present utility model also has：The valve shaft is welded with the rocking arm, is also equipped with the valve shaft
Limit spring, the limit spring are located between the rocking arm and axle sleeve, and the other end of the axle sleeve is additionally provided with locating ring, described
Valve shaft is rotatably coupled in the valve body by straight pin I.
Technical characteristic of the present utility model also has：The valve block is tapered disk formula.
Technical characteristic of the present utility model also has：The pressing plate is connected to the valve block, the pressing plate, guide shaft by guide shaft
And valve block constitutes valve block component.
Technical characteristic of the present utility model also has：The bearing is spherical bearing.
The beneficial effects of the utility model are：The rotating opening of this butterfly valve pressing plate closes steam vent, and by pendulum
On bar, pressure spring changes the size of the exhaust back pressure needed for steam vent is opened, and reaches the purpose of pressure regulation；With pressure spring to adjust
Pressure element, pressure spring expose, and its installation site leaves high-temperature region completely, so as to avoid the shadow of high temperature and carbon distribution to pressure regulation
Ring, and be easy to the maintenance and replacing in time of spring；Between the valve block and valve body of taper disc type, contact area is little, is difficult stuck；Greatly
Latus rectum steam vent pressure release speed is fast, and exhaust back pressure is adjusted and is quick on the draw, and back-pressure surges scope is little；This butterfly valve has back pressure stability
The good, advantage that regulation sensitivity is high, easy to maintain.
Description of the drawings
Accompanying drawing 1 is this utility model structural representation, and accompanying drawing 2 is the top view of accompanying drawing 1, and accompanying drawing 3 is that the A-A of accompanying drawing 1 is regarded
Figure, accompanying drawing 4 is the B-B views of accompanying drawing 1, wherein 1 valve body, 2 valve blocks, 3 flange bolts, 4 pressure springs, 5 back-up rings, 6 axle block cards,
7 bearing pins, 8 yokes, 9 nuts, 10 cylinders, 11 carriage assemblys, 12 locking nuts, 13 flange face bolts, 14 valve shafts, 15 rocking arms,
16 limit springs, 17 axle sleeves, 18 locating rings, 19 straight pins I, 20 high temperature bolts, 21 forks, 22 spherical bearings, 23 straight pins II,
24 guide shafts, 25 pressing plates, 26 steam vents.
Specific embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is illustrated.The utility model discloses a kind of
Constant pressure exhaust brake butterfly valve, including valve body 1 and the valve shaft 14 being eccentrically set in 1 inner chamber of valve body, valve block 2 are arranged on valve shaft
On 14, the braking butterfly valve includes voltage regulation part, and voltage regulation part includes：The bearing being arranged on 1 outer surface of valve body；Rotate with bearing
The fork 21 of connection；Pressure spring component on fork 21, pressure spring component include pressure spring 4 and pressure-regulating portion
Part；Pressing plate 25, pressing plate 25 are rotatably coupled on valve block 2；Steam vent 26, the rotation of pressing plate 25 can be opened or close aerofluxuss
Hole, when steam vent 26 is opened, pressure release exhaust passage is opened.
Stepped hole is provided with 1 outer surface of valve body, bearing is arranged in stepped hole.In the present embodiment, bearing is spherical bearing
22.Fork 21 is connected with spherical bearing 22 and valve body 1 with straight pin II 23.
Fork 21 is connected in spherical bearing 22 by straight pin II 23.Cannelure is provided with fork 21, back-up ring 5 is located at pendulum
In the cannelure of bar 21, flange face bolt 3 is screwed on valve body 1, and pressure spring 4 is arranged in cannelure, the pressure spring 4
One end is resisted against on flange face bolt 3, and is pushed down by flange face bolt 3, and flange face bolt 3 is voltage regulation part.
Valve shaft 14 is welded with rocking arm 15, constitutes rocking arm shaft assembly, limit spring 16, axle sleeve is provided with valve shaft 14
17th, locating ring 18 and straight pin I 19, limit spring 16, axle sleeve 17, locating ring 18 and straight pin I 19 are assembled in the big platform of valve body 1
In rank hole.To ensure corrosion resistance and wearability, rocking arm shaft assembly, bearing pin 7 and yoke 8 carry out QPQ process.
Pressing plate 25 is positioned with 4 guide shafts 24, and is connected with valve block 2, constitutes valve block component, and its middle valve plate is tied for tapered disk
Structure, can be reduced and the contact area between valve body 1, and prevent that high temperature and carbon distribution from causing is stuck.Valve block component is arranged on valve body 1
In inner chamber, and it is fixed on valve shaft 14 with 2 high temperature bolts 20, it is locking that its head carries out riveting.
Braking butterfly valve also includes cylinder 10, and the afterbody of cylinder 10 is enclosed within the support shaft of carriage assembly 11, and uses locking screw
Female 12 back of the body is tight, and carriage assembly 11 is fixed with flange face bolt 13 and valve body, and pushes down axle sleeve 17.In the effect of limit spring 16
Under, locating ring 18 is in close contact with axle sleeve 17 by straight pin I 19, so as to realize positioning of the valve block 2 in the inner chamber of valve body 1
And between valve shaft 14 and axle sleeve 17 gap sealing.
The piston rod of cylinder 10 is connected with yoke 8, and is carried on the back tightly with locking nut 12, and yoke 8 passes through 7 shape of bearing pin with rocking arm 15
Into hinges, and spacing axle block card 6 is provided with hinges.
Operation principle of the present utility model is：When engine work, the piston rod of cylinder 10 tenses rocking arm 15 to be made
Centrage of the valve block 2 parallel to 1 inner chamber of valve body, this is initial position, and engine exhaust does not produce back pressure；When electromotor needs system
When dynamic, cylinder 10 is passed through compressed air, and its piston rod is protruding, swings rocking arm 15 by yoke 8, so that valve shaft 14
Rotate, band moving valve plate component is closed, and the bore passages of valve body 1 are shut, and this is operating position, while the fork in regulator
21 around straight pin II 23 axis oscillating, push down the pressing plate 25 on valve block 2, shut the big orifice steam vent 26 on valve block 2, now
Exhaust back pressure is produced, electromotor starts braking, and when back pressure reaches setting value, pressing plate 25 is pushed out by air pressure, and gas is by big
Latus rectum steam vent 26 is discharged, and when back pressure is less than setting value, pressing plate 25 is pressed on valve block 2 by pressure spring 4 by fork 21, from
And big orifice steam vent 26 is closed, raise back pressure, reach setting value, realize the purpose of constant pressure exhaust brake.
The regulation of magnitude of back pressure is by rotating flange face bolt 3, changing the compression degree of pressure spring 4 realizing.
Certainly, described above is not limitation of the utility model, and this utility model is also not limited to the example above, this skill
Change, remodeling, addition or replacement that the those of ordinary skill in art field is made in essential scope of the present utility model, also belong to
In protection domain of the present utility model.
Claims (10)
1. a kind of constant pressure exhaust brake butterfly valve, including valve body and the valve shaft being eccentrically set in the body cavity, valve block peace
It is mounted on the valve shaft, it is characterised in that：The braking butterfly valve includes voltage regulation part, and the voltage regulation part includes：It is arranged on
Bearing on the valve outer surface；The fork being connected is rotated with the bearing；Pressure spring group on the fork
Part, the pressure spring component include pressure spring and voltage regulation part；Pressing plate, the pressing plate are rotatably coupled to the valve block
On；Steam vent, the rotation of the pressing plate can be opened or close the steam vent.
2. according to the braking butterfly valve described in claim 1, it is characterised in that：Stepped hole is provided with the valve outer surface, it is described
Bearing is arranged in the stepped hole.
3. according to the braking butterfly valve described in claim 1, it is characterised in that：Cannelure, the cannelure are provided with the fork
The pressure spring is inside installed, the voltage regulation part is flange face bolt, and one end of the pressure spring is resisted against the method
On blue face bolt, the flange face bolt is connected on the valve body.
4. according to the braking butterfly valve described in claim 1, it is characterised in that：The fork is connected to described by straight pin II
In seat.
5. according to the braking butterfly valve described in claim 1, it is characterised in that：The braking butterfly valve also includes cylinder, the cylinder
On carriage assembly, the carriage assembly is fixedly connected on the valve body.
6. according to the braking butterfly valve described in claim 5, it is characterised in that：The piston rod of the cylinder is connected with yoke, described
Yoke forms hinges by bearing pin with rocking arm, and spacing axle block card is provided with the hinges.
7. according to the braking butterfly valve described in claim 6, it is characterised in that：The valve shaft is welded with the rocking arm, the valve
Limit spring is also equipped with door-hinge, the limit spring is located between the rocking arm and axle sleeve, and the other end of the axle sleeve also sets
There is locating ring, the valve shaft is rotatably coupled in the valve body by straight pin I.
8. according to the braking butterfly valve described in claim 1, it is characterised in that：The valve block is tapered disk formula.
9. according to the braking butterfly valve described in claim 1, it is characterised in that：The pressing plate is connected to the valve block by guide shaft,
The pressing plate, guide shaft and valve block constitute valve block component.
10. according to the braking butterfly valve described in claim 1, it is characterised in that：The bearing is spherical bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621155106.XU CN206129419U (en) | 2016-10-31 | 2016-10-31 | Constant voltage exhaust brake butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621155106.XU CN206129419U (en) | 2016-10-31 | 2016-10-31 | Constant voltage exhaust brake butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206129419U true CN206129419U (en) | 2017-04-26 |
Family
ID=58574877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621155106.XU Expired - Fee Related CN206129419U (en) | 2016-10-31 | 2016-10-31 | Constant voltage exhaust brake butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206129419U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107351647A (en) * | 2017-07-13 | 2017-11-17 | 徐州徐工矿山机械有限公司 | Mining articulated truck loading space heater and mining articulated truck |
-
2016
- 2016-10-31 CN CN201621155106.XU patent/CN206129419U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107351647A (en) * | 2017-07-13 | 2017-11-17 | 徐州徐工矿山机械有限公司 | Mining articulated truck loading space heater and mining articulated truck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20211031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |