CN208793353U - Proportional throttle valve structure is led in stable type two - Google Patents
Proportional throttle valve structure is led in stable type two Download PDFInfo
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- CN208793353U CN208793353U CN201821334564.9U CN201821334564U CN208793353U CN 208793353 U CN208793353 U CN 208793353U CN 201821334564 U CN201821334564 U CN 201821334564U CN 208793353 U CN208793353 U CN 208793353U
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- 239000012530 fluid Substances 0.000 claims abstract description 60
- 238000006073 displacement reaction Methods 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 238000002955 isolation Methods 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 241001484259 Lacuna Species 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- Fluid-Driven Valves (AREA)
Abstract
The utility model relates to valve technology fields, it discloses a kind of stable type two and leads to proportional throttle valve structure, including main valve seat, displacement sensor, pilot valve, main valve chamber is equipped in main valve seat, the upper end of main valve chamber is equipped with main valve lid, the side of main valve seat is equipped with A hydraulic fluid port, B hydraulic fluid port, valve pocket is equipped in main valve chamber, the side of main valve housing is equipped with lower through-hole, upper through-hole, the lateral surface of main valve lid is equipped with driving cylinder, hollow main valve plug is equipped in valve pocket, main valve plug is equipped with main piston, the center of valve pocket limit base is equipped with sealing hole, the brake piston fixed with main valve plug is equipped in driving chamber, the side upper end of driving cylinder is equipped with upper oil hole, the side lower end of driving cylinder is equipped with lower oilhole, upper oil hole, lower oilhole passes through pipeline respectively and connect with pilot valve, the upper end of driving cylinder is equipped with sensor locating seat, displacement sensor is fixed on sensor locating seat It is internal.The utility model good, long service life, beneficial effect easy to maintain with stability.
Description
Technical field
The utility model relates to valve technology fields more particularly to a kind of stable type two to lead to proportional throttle valve structure.
Background technique
Two logical proportional throttle valves are widely used in the equipment such as die casting machine, forging press, ceramic press, proportional throttle valve
Basic functional principle: it is big that closed-loop control is formed by pilot proportional servo valve and the displacement sensor on main valve plug of small dimension
The spool displacement amount of latus rectum proportional throttle valve, to realize that the opening degree of proportional throttle valve accurately controls, to realize through A oil
The flow proportional regulatory function of mouth, B hydraulic fluid port.At present the displacement sensor in common two logical proportional throttle valves directly with A hydraulic fluid port
It communicates, A hydraulic fluid port is actuator port, is usually connect with pipeline or executing agency, and A oil port has biggish compression shock or negative
Pressure, compression shock or negative pressure are easy to cause displacement sensor to generate fatal damage, and usually this proportional throttle valve body
Product, weight are very big, and the quality of the logical proportional throttle valve of the two of big specification is tens kilograms even more than 100 kilograms, replacement displacement
It needs to disassemble and install by various tools, lifting equipment when sensor, displacement sensor replacement difficulty is big, repairs
It is long, at high cost.
Utility model content
The utility model is in order to solve the displacement sensor in two logical proportional throttle valves in the prior art by oil shock
Or negative pressure state the problem of being easily damaged, it provides a kind of stable type two and leads to proportional throttle valve, in the logical proportional throttle valve of this kind two
Displacement sensor and A hydraulic fluid port, B hydraulic fluid port it is completely isolated, not will receive the influence of oil pressure, displacement sensor under any circumstance
It is hardly damaged, overall stability is high.
To achieve the goals above, the utility model adopts the following technical solution:
Proportional throttle valve structure, including main valve seat, displacement sensor, pilot valve, the main valve seat are led in a kind of stable type two
Interior to be equipped with main valve chamber, the upper end of the main valve chamber is equipped with main valve lid, and the side of the main valve seat is equipped with the A oil being connected to main valve chamber
Mouth, B hydraulic fluid port, the main valve chamber is interior to be equipped with cylindrical valve pocket, and the bottom of the main valve chamber is equipped with valve pocket limit base, the master
The medial surface of valve deck is equipped with the position limiting convex ring with clamping on the outside of valve pocket upper end, and the side of valve pocket is lower logical equipped with what is be connected to A hydraulic fluid port
Hole, the side of valve pocket are equipped with the upper through-hole being connected to B hydraulic fluid port, and the lateral surface of the main valve lid is equipped with driving cylinder, the driving cylinder
Interior to be equipped with cylindrical driving chamber, the driving chamber and valve pocket are coaxial, and the main valve, which covers, to be equipped with for being connected to driving chamber
Upper connection through-hole is equipped with the upper end of the lower connection through-hole of main valve chamber, driving cylinder；Hollow main valve plug, institute are equipped in the valve pocket
It states the position being located in valve pocket on main valve plug and is equipped with main piston, the center of the valve pocket limit base is equipped with sealing hole, main valve plug
Lower end and sealing hole clearance fit, the upper end of main valve plug pass through lower connection through-hole and protrude into driving chamber, be equipped with and master in driving chamber
The fixed brake piston of spool, the side upper end of the driving cylinder are equipped with the upper oil hole being connected to driving chamber, the side of driving cylinder
Lower end is equipped with the lower oilhole being connected to driving chamber, and upper oil hole, lower oilhole pass through pipeline respectively and connect with pilot valve, the driving cylinder
Upper end be equipped with sensor locating seat, the upper end of the main valve plug and upper connection via clearance cooperation, the displacement sensor
It is fixed on the inside of sensor locating seat, displacement sensor coaxially protrudes into main valve plug.
Off-position or when without command signal, default conditions are A hydraulic fluid port, B hydraulic fluid port closed state, i.e., main valve plug,
Main piston is in downward extreme position, when needing A hydraulic fluid port, the connection of B hydraulic fluid port, controls lower oilhole oil inlet by pilot valve, from
And driving brake piston that main valve plug, main piston is driven integrally to move up a fragment position, specific displacement passes through displacement sensor
Signal is fed back to pilot valve by detection, to quantitatively control the opening size of A hydraulic fluid port, B hydraulic fluid port, similarly, is needed A hydraulic fluid port, B oil
When mouth cutting, pilot valve controls upper oil hole oil inlet, and brake piston drives main valve plug, main piston to move down, to cut off A oil
Oil liquid between mouth, B hydraulic fluid port is linked up；In entire use process, displacement sensor pass through always hollow main valve plug and main valve chamber,
A hydraulic fluid port, B hydraulic fluid port are completely isolated, and not will receive A hydraulic fluid port, the oil shock of B oil port or negative pressure influences, will not be by height
The medium influence of temperature, low temperature, the stability of displacement sensor is more preferable, is hardly damaged, to improve whole service life and steady
It is qualitative；Using independent housing configuration, it individually process and assemble and can be easy to be surface-treated, add to greatly reduce main valve chamber
Work precision reduces processing cost, reduces surface treatment cost.
Preferably, the upper side of the sensor locating seat is equipped with pressure release hydraulic fluid port.When main valve plug and sealing hole, upper company
When connecing through hole and leaking, the oil of leakage can be exhausted from pressure release oil port, to prevent displacement sensor from being made by oil pressure
With, and the sealing state of main valve plug and sealing hole, upper connection through hole can also be judged according to the oil liquid of pressure release hydraulic fluid port.
Preferably, forming annular chamber between the valve pocket and main valve chamber, the inner wall of the main valve chamber is equipped with for A to be isolated
The isolation bulge loop of hydraulic fluid port, B hydraulic fluid port is sealed between the inner wall of the isolation bulge loop and the outer wall of valve pocket by sealing ring；The valve
Upper through-hole, the lower through-hole of set side have several, upper through-hole along the circumferentially distributed of valve pocket, lower through-hole along valve pocket circumferential direction
Distribution.Upper through-hole, lower through-hole have several, can guarantee the big flow between A hydraulic fluid port, B hydraulic fluid port, and the pressure loss is small.
Preferably, being equipped with several oil-through-holes between two end faces of the main piston, it is located at the inner wall of the valve pocket
Position between upper through-hole and lower through-hole is equipped with conical sealing seat, and the lower end of the main piston is equipped with to be cooperated with conical sealing seat
Sealing cone is equipped with sealing ring between the upper side and valve pocket of the main piston.Upside cavity, the downside cavity of main piston are logical
Oil-through-hole communication is crossed, so that main piston unilateral side be prevented to be pressurized and be subjected to displacement, moreover it is possible to upside cavity be avoided to generate vacuum, another party
Face can also mitigate the quality of main piston, and then improve the sensitivity of pilot valve control.
Preferably, the pilot valve is proportional servo valve.
Therefore, the utility model has the following beneficial effects: (1) displacement sensor and main valve chamber, A hydraulic fluid port, B hydraulic fluid port are complete
Isolation, not will receive oil shock or negative pressure influences, will not be by cold and hot medium influence, and stability is good, long service life, no
It is easy to damage；(2) independent housing configuration is used, individually process and assemble and can be easy to be surface-treated, to greatly reduce master
Valve chamber machining accuracy reduces processing cost, reduces surface treatment cost.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the utility model.
Status diagram when Fig. 2 is A hydraulic fluid port, the connection of B hydraulic fluid port.
Fig. 3 is partial enlargement diagram at C in Fig. 2.
In figure: main valve seat 1, displacement sensor 2, pilot valve 3, main valve chamber 4, main valve lid 5, A hydraulic fluid port 6, B hydraulic fluid port 7, valve pocket 8,
Annular chamber 9, isolation bulge loop 10, lower through-hole 11, upper through-hole 12, valve pocket limit base 13, position limiting convex ring 14, driving cylinder 15, driving chamber
16, main valve plug 17, main piston 18, sealing hole 19, brake piston 20, upper oil hole 21, lower oilhole 22, sensor locating seat 23, let out
Press oil port 24, oil-through-hole 25, conical sealing seat 26, sealing cone 27.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and detailed description:
Proportional throttle valve structure, including main valve seat 1, displacement sensor 2, guide are led in a kind of stable type two as shown in Figure 1
Valve 3, pilot valve are proportional servo valve, and main valve chamber 4 is equipped in main valve seat, and the upper end of main valve chamber is equipped with main valve lid 5, the side of main valve seat
Face is equipped with the A hydraulic fluid port 6, the B hydraulic fluid port 7 that be connected tos with main valve chamber, is equipped with cylindrical valve pocket 8 in main valve chamber, valve pocket and main valve chamber it
Between form annular chamber 9, the inner wall of main valve chamber is equipped with the isolation bulge loop 10 for A hydraulic fluid port, B hydraulic fluid port to be isolated, the isolation bulge loop
It is sealed between inner wall and the outer wall of valve pocket by sealing ring, the side of valve pocket is equipped with the lower through-hole 11 being connected to A hydraulic fluid port, valve pocket
Side is equipped with the upper through-hole 12 being connected to B hydraulic fluid port, and upper through-hole, the lower through-hole of valve pocket side have several, and upper through-hole is along valve
What is covered is circumferentially distributed, and lower through-hole is along the circumferentially distributed of valve pocket.
The bottom of main valve chamber 4 is equipped with valve pocket limit base 13, and the medial surface of main valve lid 5 is equipped with and clamping on the outside of valve pocket upper end
Position limiting convex ring 14, the lateral surface of main valve lid are equipped with driving cylinder 15, are equipped with cylindrical driving chamber 16 in driving cylinder, driving chamber with
Valve pocket is coaxial, and main valve covers the lower connection through-hole being equipped with for being connected to driving chamber and main valve chamber, and the upper end of driving cylinder is equipped with upper company
Connect hole；It is equipped with hollow main valve plug 17 in valve pocket, the position in valve pocket is located on main valve plug and is equipped with main piston 18, valve pocket limit
The center of seat 13 is equipped with sealing hole 19, the lower end of main valve plug and sealing hole clearance fit, and it is logical that the upper end of main valve plug passes through lower connection
Hole is protruded into driving chamber, and the brake piston 20 fixed with main valve plug is equipped in driving chamber, and the side upper end of driving cylinder is equipped with and drive
The upper oil hole 21 of dynamic chamber connection, the side lower end of driving cylinder are equipped with the lower oilhole 22 being connected to driving chamber, upper oil hole, lower oilhole point
Not Tong Guo pipeline connect with pilot valve 3, the upper end of driving cylinder is equipped with sensor locating seat 23, and the upper end of main valve plug and upper connection are logical
Interporal lacuna cooperation, displacement sensor 2 are fixed on the inside of sensor locating seat, and displacement sensor coaxially protrudes into main valve plug；It passes
The upper side of sensor positioning seat is equipped with pressure release hydraulic fluid port 24.
As shown in figures 1 and 3, it is equipped with several oil-through-holes 25 between two end faces of main piston, is located at the inner wall of valve pocket 8
Position between upper through-hole and lower through-hole is equipped with conical sealing seat 26, and the lower end of main piston is close equipped with cooperating with conical sealing seat
The conical surface 27 is sealed, sealing ring is equipped between the upper side and valve pocket of main piston；Lower connection through-hole, upper connection through-hole, sealing hole
O-ring is equipped at inner wall.
In conjunction with attached drawing, the principles of the present invention are as follows: as shown in Figure 1, off-position or when without command signal,
Default conditions are A hydraulic fluid port, B hydraulic fluid port closed state, i.e. main valve plug, main piston is in downward extreme position, A hydraulic fluid port, B hydraulic fluid port it
Between separated；When needing A hydraulic fluid port, the connection of B hydraulic fluid port, lower oilhole oil inlet is controlled by pilot valve, to drive brake piston band
Dynamic main valve plug, main piston integrally move up a fragment position, and specific displacement is detected by displacement sensor feeds back to signal
Pilot valve, to quantitatively control the opening size of A hydraulic fluid port, B hydraulic fluid port, state is as shown in Figure 2 at this time；Similarly, it needs A hydraulic fluid port, B
When hydraulic fluid port is cut off, pilot valve controls upper oil hole oil inlet, and brake piston drives main valve plug, main piston to move down, to cut off A oil
Oil liquid between mouth, B hydraulic fluid port is linked up；In entire use process, displacement sensor pass through always hollow main valve plug and main valve chamber,
A hydraulic fluid port, B hydraulic fluid port are completely isolated, and not will receive A hydraulic fluid port, the oil shock of B oil port or negative pressure influences, will not be by height
The medium influence of temperature, low temperature, the stability of displacement sensor is more preferable, is hardly damaged, to improve whole service life and steady
It is qualitative；Using independent housing configuration, it individually process and assemble and can be easy to be surface-treated, add to greatly reduce main valve chamber
Work precision reduces processing cost, reduces surface treatment cost.
In the present embodiment, the signal transmitting between displacement sensor and pilot valve, processing, control, feedback are existing two
General technology in logical proportional throttle valve, belongs to the prior art, also the not claimed technology of the application, therefore the present embodiment
In no longer to the part, the prior art is repeated.The above are only specific embodiments of the present invention, but the utility model
Technical characteristic is not limited thereto, any based on the utility model, to solve essentially identical technical problem, is realized basic
Identical technical effect, made simple change, equivalent replacement or modification etc. are all covered by the protection model of the utility model
Among enclosing.
Claims (5)
1. proportional throttle valve structure, including main valve seat, displacement sensor, pilot valve are led in a kind of stable type two, in the main valve seat
Equipped with main valve chamber, the upper end of the main valve chamber is equipped with main valve lid, and the side of the main valve seat is equipped with the A oil being connected to main valve chamber
Mouth, B hydraulic fluid port, characterized in that cylindrical valve pocket is equipped in the main valve chamber, the bottom of the main valve chamber is limited equipped with valve pocket
Seat, the medial surface of the main valve lid are equipped with the position limiting convex ring with clamping on the outside of valve pocket upper end, and the side of valve pocket is equipped with to be connected with A hydraulic fluid port
Logical lower through-hole, the side of valve pocket are equipped with the upper through-hole being connected to B hydraulic fluid port, and the lateral surface of the main valve lid is equipped with driving cylinder, institute
It states and is equipped with cylindrical driving chamber in driving cylinder, the driving chamber and valve pocket are coaxial, and the main valve, which covers, to be equipped with for connecting
The upper end of the lower connection through-hole of logical driving chamber and main valve chamber, driving cylinder is equipped with upper connection through-hole；It is equipped in the valve pocket hollow
Main valve plug is located at the position in valve pocket on the main valve plug and is equipped with main piston, and the center of the valve pocket limit base is equipped with sealing hole,
The lower end of main valve plug and sealing hole clearance fit, the upper end of main valve plug passes through lower connection through-hole and protrudes into driving chamber, in driving chamber
Equipped with the brake piston fixed with main valve plug, the side upper end of the driving cylinder is equipped with the upper oil hole being connected to driving chamber, driving
The side lower end of cylinder is equipped with the lower oilhole being connected to driving chamber, and upper oil hole, lower oilhole pass through pipeline respectively and connect with pilot valve, institute
The upper end for stating driving cylinder is equipped with sensor locating seat, and the upper end of the main valve plug and upper connection via clearance cooperate, the position
Displacement sensor is fixed on the inside of sensor locating seat, and displacement sensor coaxially protrudes into main valve plug.
2. proportional throttle valve structure is led in stable type two according to claim 1, characterized in that the sensor locating seat
Upper side is equipped with pressure release hydraulic fluid port.
3. proportional throttle valve structure is led in stable type two according to claim 1, characterized in that the valve pocket and main valve chamber it
Between form annular chamber, the inner wall of the main valve chamber is equipped with the isolation bulge loop for A hydraulic fluid port, B hydraulic fluid port to be isolated, the isolation bulge loop
It is sealed between inner wall and the outer wall of valve pocket by sealing ring；Upper through-hole, the lower through-hole of the valve pocket side have several, upper logical
Hole is along the circumferentially distributed of valve pocket, and lower through-hole is along the circumferentially distributed of valve pocket.
4. proportional throttle valve structure is led in stable type two according to claim 1 or 3, characterized in that the two of the main piston
Several oil-through-holes are equipped between a end face, the position at the inner wall of the valve pocket positioned at upper through-hole and lower through-hole between is equipped with taper
Seal receptacle, the lower end of the main piston are equipped with sealing cone cooperate with conical sealing seat, the upper side of the main piston and
Sealing ring is equipped between valve pocket.
5. proportional throttle valve structure is led in stable type two according to claim 1, characterized in that the pilot valve is ratio
Servo valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821334564.9U CN208793353U (en) | 2018-08-20 | 2018-08-20 | Proportional throttle valve structure is led in stable type two |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821334564.9U CN208793353U (en) | 2018-08-20 | 2018-08-20 | Proportional throttle valve structure is led in stable type two |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208793353U true CN208793353U (en) | 2019-04-26 |
Family
ID=66206079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821334564.9U Withdrawn - After Issue CN208793353U (en) | 2018-08-20 | 2018-08-20 | Proportional throttle valve structure is led in stable type two |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208793353U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757623A (en) * | 2018-08-20 | 2018-11-06 | 刘永 | Proportional throttle valve is led in a kind of stable type two |
-
2018
- 2018-08-20 CN CN201821334564.9U patent/CN208793353U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757623A (en) * | 2018-08-20 | 2018-11-06 | 刘永 | Proportional throttle valve is led in a kind of stable type two |
| CN108757623B (en) * | 2018-08-20 | 2024-05-10 | 刘永 | Stable two-way proportional throttle valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190426 Effective date of abandoning: 20240510 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190426 Effective date of abandoning: 20240510 |