CN210003587U - built-in pressure-reducing flow-guiding device throttle valve - Google Patents
built-in pressure-reducing flow-guiding device throttle valve Download PDFInfo
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- CN210003587U CN210003587U CN201920797717.1U CN201920797717U CN210003587U CN 210003587 U CN210003587 U CN 210003587U CN 201920797717 U CN201920797717 U CN 201920797717U CN 210003587 U CN210003587 U CN 210003587U
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- 230000001603 reducing effect Effects 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000006837 decompression Effects 0.000 abstract description 11
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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- Control Of Fluid Pressure (AREA)
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Abstract
The utility model discloses an kind of built-in decompression drainage device choke valve, its characterized in that includes left end lid, uide bushing, throttle valve core, valve body, decompression valve barrel, drainage device, pressure reducing spring and right-hand member lid etc. water inlet and delivery port are located valve body and right-hand member respectively and cover, are equipped with the uide bushing between throttle valve core and the valve body, place in the valve body downthehole in the decompression valve barrel, place decompression valve barrel hole in the drainage device in, but the horizontal slip, installation decompression spring between drainage device and the right-hand member lid adjusts drainage device's displacement, the left side of decompression valve barrel is opened has the waist type hole that two sets of diameters are different, there is the step drainage device inside, and the tip of decompression valve barrel has the ladder, and the two constitutes the decompression valve port.
Description
Technical Field
The utility model belongs to water hydraulic pressure field, concretely relates to kinds of built-in decompression drainage device's choke valve.
Background
The water hydraulic technology is a hydraulic transmission technology which uses seawater or fresh water as a working medium to carry out energy transfer and control, has the advantages of no pollution, environmental friendliness, safety, energy conservation and the like, is typical green production technologies, and a water pressure throttle valve is a flow control valve commonly used in a water hydraulic system and used for loading and throttling speed regulation.
The pressure distribution at the valve port is an important influence factor influencing the cavitation phenomenon of the throttle valve, and the improvement of the pressure distribution at the valve port is common measures for inhibiting cavitation, including valve port structure design and inlet pressure inducing the valve port of the throttle valve.
SUMMERY OF THE UTILITY MODEL
To the cavitation in the water pressure choke valve, the utility model provides an kinds of built-in decompression drainage device choke valves to the realization is all effectively restrained the cavitation under the different work condition.
A throttle valve with built-in pressure-reducing and flow-guiding device is composed of valve body, locking nut, internal hexagonal screw, spring washer, left end cover, elastic check ring for shaft, O-ring, guide sleeve, throttle valve core, pressure-reducing valve sleeve, flow-guiding device, pressure-reducing spring, and right end cover.
, a conical valve core is arranged on the right side of the throttle valve core and forms a conical valve port with the valve body, and the valve port of the valve body adopts a blunt chamfer.
, the left side of the pressure reducing valve sleeve is provided with a waist-shaped hole with inner and outer diameters, and the sum of wrap angles of the waist-shaped holes at each diameter is (270-360 degrees).
, the drainage device is provided with a plurality of radial circular holes which are symmetrically distributed along the radial direction.
, the drainage device has a step inside, the pressure reducing valve sleeve has a step at its end, the diameter of the step is smaller than that of the step, and the step form the pressure reducing valve port.
, the contact length between the drainage device and the pressure reducing valve sleeve is 1/5-1/2 of the length of the drainage device.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model leads the outlet pressure water to the valve port of the throttle valve, improves the pressure distribution of the valve port, thereby effectively inhibiting the cavitation phenomenon of the hydraulic valve port; when the backpressure of the outlet of the throttle valve changes, the pressure reducing device enables the drainage pressure at the position of the throttle valve to be basically maintained unchanged, the cavitation inhibition effect can be basically kept constant, the cavitation phenomenon under different working condition pressures can be effectively inhibited, and the pressure reducing device is suitable for various working pressure occasions.
(2) The utility model discloses a decompression drainage device embeds integratively in the choke valve, and compact structure is applicable to the cavitation suppression of various hydraulic control valves.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of a throttle valve during pressure reduction;
FIG. 3 is a schematic view of the throttle valve when locked;
FIG. 4 is a schematic view of a pressure relief valve sleeve configuration;
fig. 5 is a schematic view of the drainage device.
The above figures are labeled as: the pressure-reducing valve comprises a locking nut 1, an inner hexagon screw 2, a spring washer 3, a left end cover 4, a shaft elastic retainer ring 5, an O-shaped ring 6, a guide sleeve 7, a throttle valve core 8, a valve body 9, a pressure-reducing valve sleeve 10, a drainage device 11, a pressure-reducing spring 12, a right end cover 13, a water inlet 14, a throttle valve port 15, a drainage port 16 of the pressure-reducing valve sleeve, a pressure-increasing port 17, a pressure-reducing valve port 18, a drainage port 19 of the drainage device, a water outlet 20, a step 21, a drainage kidney-shaped hole 22, a pressure-increasing kidney-
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in with reference to the accompanying drawings and embodiments.
FIG. 1 shows embodiments of the present invention, which includes a lock nut 1, an inner hexagon screw 2, a spring washer 3, a left end cap 4, a shaft circlip 5, an O-ring 6, a guide sleeve 7, a throttle valve core 8, a valve body 9, a pressure reducing valve sleeve 10, a flow guiding device 11, a pressure reducing spring 12 and a right end cap 13. the built-in pressure reducing flow guiding device throttle valve is divided into a left section and a right section, the left side of the throttle valve port 15 plays a role of throttling and speed regulation, which is called a throttle valve section, the right side of the throttle valve port 15 plays a role of pressure reducing flow guiding, which is called a flow guiding section.in the throttle valve section, the left end cap 4 is connected to the valve body 9 by the inner hexagon screw 2 and the spring washer 3, and is axially sealed by the O-ring 6. the throttle valve core 8 and the left end cap 4 are connected by screw threads, the lock nut 1 is used for positioning, the guide sleeve 7 is installed between the throttle valve core 8 and the valve body 9, the two sides of the guide sleeve 7 are respectively positioned by the shaft circlip 5 and a shaft shoulder, the valve body 9 is provided with a water inlet 14, the flow guiding sleeve 10 is arranged in the flow guiding sleeve, the flow guiding sleeve is arranged in the flow guiding sleeve, the flow guiding device, the left end cap 11, the flow guiding device is arranged in the flow guiding device, the flow.
The right side of the throttle valve core 8 is a conical valve core which forms a conical throttle valve port 15 together with the valve body, and the valve port at the valve body 9 adopts a blunt chamfer, so that high-pressure water at the water outlet 20 can more easily guide the throttle valve port 15. Two groups of kidney-shaped holes with different diameters are formed in the left side of the pressure reducing valve sleeve 10, namely a drainage kidney-shaped hole 22 and a pressure lifting kidney-shaped hole 23, so that a pressure reducing valve sleeve drainage port 16 and a pressure lifting port 17 are formed. The drainage device 11 is provided with a plurality of radially symmetrical drainage ports 19; the end of the drainage device 11 is provided with a step 24, the end of the pressure reducing valve sleeve 10 is provided with a step 21, the diameter of the step 24 is smaller than that of the step 21, clearance fit is adopted, and the step 24 and the step 21 form the pressure reducing valve port 18. The contact length of the drainage device 11 and the pressure reducing valve sleeve 10 is 1/5-1/2 of the total length of the drainage device 11, so that the pressure reducing valve port 18 is prevented from overturning.
Water flows in from the water inlet 14 and then flows to the water outlet 20 through the throttle valve port 15, which is the operation process of a conventional throttle valve. When cavitation occurs, the pressure of the throttle valve port 15 is reduced to be below the atmospheric pressure, and for the built-in pressure-reducing drainage device throttle valve shown in fig. 1, water at the water outlet 20 passes through the drainage port 19 of the drainage device, then flows through the pressure-reducing valve port 18 and the drainage port 16 of the pressure-reducing valve sleeve, and finally reaches the throttle valve port 15, so that the pressure distribution of the valve port is improved, and the cavitation phenomenon of the hydraulic valve port is inhibited.
The analysis is divided into two conditions of lower pressure and higher pressure at the water outlet 20, when the water pressure at the water outlet 20 is lower, the pressure reducing valve port 18 basically has no pressure reducing effect and no pressure loss, which is equivalent to that the pressure of the water outlet 20 is basically and completely introduced into the throttle valve port 15, at the moment, the drainage device 11 is pressed on the pressure reducing valve sleeve 10, and the pressure reducing spring 12 is in an initial compression state, as shown in fig. 1, fig. 2 is a schematic diagram of the throttle valve when pressure is reduced, when the water pressure at the water outlet 20 is higher, water at the drainage port 16 of the pressure reducing valve sleeve is caused to pass through the pressure lifting port 17 and act on the pressure reducing valve sleeve 10, so that the pressure reducing valve sleeve 10 moves rightwards, the pressure reducing spring 12 is compressed by step, the flow area of the pressure reducing valve port 18 is reduced to play a pressure reducing effect, so that the pressure at the throttle valve port 15 is lower than the pressure at the water outlet 20, and the pressure impact caused by the high-pressure drainage port at the water outlet 20 is avoided, on the aspect of , the stress analysis is carried out, and the pressure at the pressure reducing valve sleeve 10 is known that the pressure at the pressure lifting port 17 is approximately Kx/A (K, x is respectively, the basic constant value is maintained, and the cavitation pressure at the.
Fig. 3 shows that the throttle valve core 8 is adjusted to close the throttle valve port 15, water in the water inlet 14 cannot pass through the throttle valve port 15, at this time, the flow guiding device 11 is pressed on the pressure reducing valve sleeve 10, the pressure reducing spring 12 is in an initial compression state, and water in the whole throttle valve is in a static state.
The foregoing is only a preferred embodiment of the present invention and is not intended to limit the scope of the invention, which is to be accorded the widest scope consistent with the principles and spirit of the invention.
Claims (7)
- The throttling valve with the built-in pressure-reducing drainage device is characterized by comprising a valve body, a locking nut, a hexagon socket screw, a spring washer, a left end cover, a shaft elastic check ring, an O-shaped ring, a guide sleeve, a throttling valve core, a pressure-reducing valve sleeve, a drainage device, a pressure-reducing spring and a right end cover, wherein the built-in pressure-reducing drainage device is divided into a left section and a right section, the left section is a throttling valve section, the right section is a drainage section, the left end cover is connected to the valve body through the hexagon socket screw and is axially sealed through the O-shaped ring, the throttling valve core is connected with the left end cover through threads and is locked and positioned through the locking nut, the guide sleeve is arranged on the part, entering the valve body, of the throttling valve core is provided with the guide sleeve, two sides of the guide sleeve are respectively positioned through the shaft elastic check ring and a boss, a water inlet is formed in the valve body, the drainage section, the pressure-reducing valve sleeve is arranged in the valve body hole, the left side and the left side of the valve body, the boss and the right end cover are axially positioned through the boss, the right end cover and.
- 2. The throttle valve with built-in pressure-reducing and flow-guiding device according to claim 1, wherein the right side of the throttle valve core is a conical valve core, which forms a conical valve port with the valve body, and the valve port of the valve body is a blunt chamfer.
- 3. The throttling valve with built-in pressure-reducing and flow-guiding device according to claim 1, wherein the pressure-reducing valve sleeve is provided with two layers of three-section kidney-shaped holes.
- 4. The throttle valve with built-in pressure-reducing and flow-guiding device as claimed in claim 1, wherein the flow-guiding device is provided with a radial circular hole.
- 5. The built-in pressure reducing diversion device throttling valve of claim 1, wherein the pressure reducing spring is axially positioned by the diversion device and a right end cover boss, and the pressure reducing spring is in a compressed state in an initial state.
- 6. The throttle valve with built-in pressure-reducing and flow-guiding device as claimed in claim 1, wherein the contact length between the flow-guiding device and the pressure-reducing valve sleeve is 1/5-1/2 of the total length of the flow-guiding device.
- 7. The throttling valve with built-in pressure-reducing and flow-guiding device as claimed in claim 1, wherein the flow-guiding device has a step inside, the end of the pressure-reducing valve sleeve has a step, the diameter of the step is smaller than that of the step, and the step form a pressure-reducing valve port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920797717.1U CN210003587U (en) | 2019-05-29 | 2019-05-29 | built-in pressure-reducing flow-guiding device throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920797717.1U CN210003587U (en) | 2019-05-29 | 2019-05-29 | built-in pressure-reducing flow-guiding device throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210003587U true CN210003587U (en) | 2020-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920797717.1U Active CN210003587U (en) | 2019-05-29 | 2019-05-29 | built-in pressure-reducing flow-guiding device throttle valve |
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| CN (1) | CN210003587U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107555A (en) * | 2019-05-29 | 2019-08-09 | 青岛科技大学 | A kind of built-in decompression drainage device throttle valve |
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2019
- 2019-05-29 CN CN201920797717.1U patent/CN210003587U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107555A (en) * | 2019-05-29 | 2019-08-09 | 青岛科技大学 | A kind of built-in decompression drainage device throttle valve |
| CN110107555B (en) * | 2019-05-29 | 2024-04-05 | 青岛科技大学 | Throttle valve with built-in pressure-reducing drainage device |
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