CN211737616U - Hydraulic control automatic closing, closing and regulating valve - Google Patents

Abstract

The utility model discloses a liquid accuse is automatic to be closed, close, transfer valve, including liquid motor and valve unit, liquid motor and gap bridge shell are through first O type circle sealing connection, the upper portion of shell is equipped with leak protection and arranges centrifugal plate down, first oil blanket, the second oil blanket, thrust bearing, bush, welt, fixed plate, circular groove, go up tapering standard bearing, center pin and lower cylinder bearing, center pin lower extreme connection liquid motor, the fan is connected to the upper end, bush, welt, fixed plate and thrust bearing set up in the middle of last tapering bearing and lower cylinder bearing, the valve unit is including solenoid valve, slide valve, damping damming, fast return and spout integrative subassembly, C mouth through-hole, first through-stop hole, pressure differential cutout hole and closure hole oil mass mechanism, the second through-stop hole, the oil feed channel, pressure differential pilot-controlled valve and motor oil duct switch-on, realize adjustable full-automatic 6-9 seconds slowly do not have the striking start, The rotation inertia naturally disappears and stops in dozens of seconds, and the whole process has no impact, so that the service life of the hydraulic mechanism is prolonged.

Description

Hydraulic control automatic closing, closing and regulating valve

Technical Field

The utility model relates to a hydraulic control volume regulating valve especially relates to a hydraulic control is automatic to be closed, close, volume regulating valve.

Background

The existing domestic and foreign high-power mechanical hydraulic fan motor is characterized in that a large fan with the diameter of about 2200mm is directly arranged on an output shaft of the hydraulic motor, and the swing of a fracturing truck is caused by the shaking and the dynamic balance difference until the hydraulic motor is damaged; the gap bridge connector is additionally arranged, but due to the selection of the dual-aligning bearing, the gap bridge shell has poor stability and the limitation of lubricating and adding of artificial butter, the lubrication cannot be ensured, the gap bridge shell can not be suitable for lubricating a long-term high-operating temperature region, the oil at the inlet and the outlet of a motor has a hole-free flow control and interception measure, the gap bridge shell is quickly started and stopped for a long time and exceeds the original designed ideal torque to impact, an oil seal at the upper end of an output shaft of an original fan is subjected to rainwater and dust invasion and damage to the oil seal for a long time towards the sky, and seepage and leakage occur to accelerate the damage and swing of the double-row aligning bearing due to poor lubrication, so that a; as above, the structure forms and the butter lubrication mode are not suitable for high-temperature operation, and serious problems are easy to occur. The existing fan motor design still has the defects of being negligible, long in import purchase period and high in value, and influences normal large-scale operation of underground fracturing of an oil field.

The utility model discloses a full-automatic crashproof fan motor is opened and shut down to grant utility model patent with publication number CN 209458149U has utilized pressure differential hydraulic force can promote the slide valve and promote the slide valve rotation and win the removal period time extension, and case crew cut and valve opening close in the twinkling of an eye, though have the time delay, but close in the twinkling of an eye, can not really embody slowly not have towards, hit the start.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art's not enough, the utility model provides a hydraulic control is automatic to be closed, close, volume regulating valve adopts straight body cylinder nevertheless to lean on left room pressure to be higher than right room pressure differential moving body vertebra, and valve body centrum point and valve aperture are controllable damps gradually, reach slowly and close gradually, and the closing time is with the constant time of opening to the normally closed period of case left side chamber volume size setting, realizes starting flexible controllable extremely normally closed operation gradually, thoroughly prevents to start the impactedly and to the harm at relevant position.

In order to solve the technical problem, the utility model provides a following technical scheme:

a hydraulic control automatic closing and adjusting valve comprises a liquid motor, a bridge shell, a primary hydraulic oil tank, a stop valve, a control valve group and an electromagnetic valve, wherein the liquid motor and the bridge shell are in sealing connection through a first O-shaped ring, the upper portion of the bridge shell comprises a leakage-proof lower centrifugal sheet, a first oil seal, a second oil seal, a thrust bearing, a bushing, a lining plate, a fixing plate, an oil-spraying circular groove, an upper taper standard bearing, a central shaft and a lower cylindrical bearing, the first oil seal and the second oil seal are respectively provided with a first oil seal cover and a second oil seal cover, the first oil seal cover and the second oil seal cover are respectively in sealing connection with a third O-shaped ring through the second O-shaped ring, the upper end of the central shaft is connected with a fan, one side of the bridge shell is provided with a leakage-proof lower oil outlet, the other side of the bridge shell is provided with an oil return backpressure reverse-spraying, The liner plate, the fixing plate and the thrust bearing are arranged between the upper taper standard bearing and the lower cylindrical bearing, the pressure difference adjustable control valve group comprises a valve body, a slide valve, a damping intercepting and fast back-spraying integrated valve, a damping channel, an E-port through hole, a through hole and an intercepting hole, an oil inlet is formed in one side of the hydraulic motor, an oil outlet is formed in the other side of the hydraulic motor, and the control valve is assembled between the oil inlet and the oil outlet.

As an optimized technical scheme of the utility model, the fixed plate passes through four M16 bolt fixed connection gap bridge shell.

As an optimal technical scheme of the utility model, one side of passing a bridge shell is equipped with the abdominal cavity manometer, and the outside of passing a bridge shell is arranged in to the sense terminal of abdominal cavity manometer communicates with each other.

As an optimized technical scheme of the utility model, first oil blanket and second oil blanket select for use high temperature resistant 250 degrees, low temperature-65 degrees fluorine glue oil blanket.

As an optimal technical scheme of the utility model, the check valve of control valve group right side E mouth through-hole coupling hose left side C mouth stop valve, first tee bend pipe fitting to liquid motor oil inlet, the oil return opening of hose connection liquid motor is passed through to the opposite side of control valve group, the former hydraulic tank of hose, second tee bend pipe fitting connection is passed through to the E mouth through-hole, connect former hydraulic tank on the second tee bend pipe fitting under the liquid motor oil return opening, the lubricated import of oil return backpressure back spray hose connection oil return opening through the oil return backpressure.

As an optimal technical scheme of the utility model, the oil feed system of liquid motor communicates with each other for subsequent use through the oil return system of E mouthful through-hole with the liquid motor through the valve unit.

As an optimized technical scheme of the utility model, the valve unit can adopt impact energy or mechanical energy or hydraulic pressure energy three can unification control valve or hydraulic pressure differential control valve.

As an optimal technical scheme of the utility model, the valve unit is applicable to crashproof hydraulic system's application.

Compared with the prior art, the utility model discloses the beneficial effect that can reach is:

the utility model reduces the complex procedures of forced manual maintenance, adds an abdominal pressure gauge for safely displaying the current situation of visual lubrication gap bridge of observation pressure (about 0.05 mPa), ensures that the oil seal on the vertical shaft of the fan faces upwards and outwards, and the oil seal is damaged and leaked prematurely due to wind, rain and dust, adds the end face of the lower concave buckle of the rotary stainless steel centrifugal sheet along with the shaft to throw a long string of sprayed and leaked oil to a circular groove for gathering, and connects the lower row of hoses for displaying and observing to judge that the oil seal is sprayed and leaked without polluting the oil tank; the centrifugal sheet rotates the upper plane fast and throws and discharges the existing dust, rainwater and the like outside, protects the oil seal from being invaded by the dust and rainwater, prolongs the service life, the upper taper standard bearing bears the reverse force of upward exhaust of a bearing load of 7 tons, the lower cylindrical bearing still uses the floating of the inner sleeve to ensure the use of the inherent gap, is convenient for assembly and maintenance to prevent the floating inner sleeve from being damaged in an upward micro-string mode under extreme individual conditions, a bushing, a lining plate, a fixing plate and a thrust bearing are additionally arranged between the upper bearing and the lower bearing, the fixing plate and the gap bridge shell are fixed by a four M16 bolt, the bushing, the lining plate and the fixing plate realize the application of the design gap principle of the thrust bearing, ensure the safe and stable operation of the design gap, and improve the service life; the control valve group adopts a straight cylinder, but the pressure close to the left chamber is higher than the pressure difference of the right chamber to move the mobile cone, the cone tip of the valve body and the aperture of the valve are gradually controlled to cut off, the slow gradual closing is achieved, the closing time is the time period from the constant opening to the normal closing set by the volume size of the left chamber of the valve core, the flexible, flexible and controllable operation from the starting to the normal closing is realized, and the damage to relevant parts caused by the rapid collision of the starting is thoroughly prevented. When the oil flow is started, high-pressure oil is sprayed through the micropores of 0.5-1 mm, but when the oil flow is stopped, the oil flow flows back and is decompressed simultaneously with the macropores of the same body of 0.5-1 mm, the pressure of the right cavity is formed and is greater than that of the left cavity, and then spring force is added, so that the sliding 0.5 second valve is instantly opened, and the oil flow direction is changed to a short-circuit circulation mode.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a cross-sectional view of the valve body of the present invention;

wherein: 1. a liquid motor; 2. a gap bridge housing; 4. an upper taper standard bearing; 5. a lower cylindrical bearing; 6. a first oil seal cover; 7. a second oil seal cover; 10. back-spraying a lubricating backflow port; 11. back pressure back spray lubrication inlet; 12. a fan; 14. a first O-ring; 16. an oil return back pressure reverse spray hose; 18. an abdominal pressure gauge; 19. anti-leakage lower centrifugal sheet; 20. an anti-leakage lower oil discharge outlet; 21. a first oil seal; 22. a second oil seal; 23. a thrust bearing; 24. a second O-ring; 25. a third O-ring; 26. a bushing; 27. a liner plate; 28. a fixing plate; 29. in case of oil leakage, the round groove is sprayed; 30. a primary hydraulic oil tank; 31. a stop valve; 32. a valve body; 33. a spool valve; 34. a damping interception fast back-spraying integrated valve; 35. a damping channel; 36. e port through hole; 37. a through stop hole; 38. a cutoff hole; 40. a first tee fitting; 42. a control valve group; 43. an electromagnetic valve; 44. a hose; 53. a second tee fitting.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Referring to fig. 1-2, a hydraulic control automatic closing, closing and metering valve comprises a hydraulic motor 1, a gap bridge housing 2, a raw hydraulic oil tank 30, a stop valve 31, a control valve group 42 and an electromagnetic valve 43, wherein the hydraulic motor 1 and the gap bridge housing 2 are hermetically connected through a first O-ring 14, the upper portion of the gap bridge housing 2 comprises a leakproof lower centrifugal sheet 19, a first oil seal 21, a second oil seal 22, a thrust bearing 23, a bushing 26, a lining plate 27, a fixing plate 28, a circular groove 29 for spraying oil in case, an upper taper standard bearing 4, a central shaft 3 and a lower cylindrical bearing 5, the first oil seal 21 and the second oil seal 22 are respectively provided with a first oil seal cover 6 and a second oil seal cover 7 and are hermetically connected with a third O-ring 25 through a second O-ring 24, the upper end of the central shaft 3 is connected with a fan 12, one side of the gap bridge housing 2 is provided with a leakproof lower oil outlet 20, the other side is provided with an oil return back pressure reverse spraying lubrication inlet 11, a reverse spraying lubrication return port 10 is arranged below the gap bridge shell 2, a lining 26, a lining plate 27, a fixing plate 28 and a thrust bearing 23 are arranged between the upper taper standard bearing 4 and the lower cylindrical bearing 5, a pressure difference adjustable control valve group 42 comprises a valve body 32, a slide valve 33, a damping cut-off quick reverse spraying integrated valve 34, a damping channel 35, an E port through hole 36, a through stop hole 37 and a cut-off hole 38, one side of the liquid motor 1 is provided with an oil inlet, the other side is provided with an oil outlet, the control valve group 42 is arranged between the oil inlet and the oil outlet, and a stop valve 31 is arranged between the control valve 42.

The fixing plate 28 is fixedly connected with the gap bridge shell 2 through four M16 bolts, one side of the gap bridge shell 2 is provided with an abdominal cavity pressure gauge 18, the detection end of the abdominal cavity pressure gauge 18 is arranged outside the gap bridge shell 2 to be communicated, and the first oil seal 21 and the second oil seal 22 are made of high-temperature resistant 250-65-degree fluorine rubber oil seals; the right E port through hole 36 of the control valve group 42 is connected with a C port stop valve 31 on the left side of a hose 44, a first three-way pipe fitting 40 and an oil inlet of the hydraulic motor 1, the other side of the control valve group 42 is connected with an oil return port of the hydraulic motor 1 through the hose 44, the E port through hole 36 is connected with an original hydraulic oil tank 30 through the hose 44 and a second three-way pipe fitting 53, the upper part of the second three-way pipe fitting 53 is connected with the lower part of the oil return port of the hydraulic motor 1 and is connected with the original hydraulic oil tank 30, and the oil return back pressure reverse spraying lubrication inlet 11 is connected with the oil return port through; the oil return back pressure reverse spraying lubrication inlet 11 is connected with an oil return port through an oil return back pressure reverse spraying hose 16, an oil inlet system of the liquid motor 1 is communicated with an oil return system of the liquid motor 1 through an E port through hole 36 for standby, when an electromagnetic valve 43 is opened for oil supply, the E port through hole 36 controls a valve 42 port to be fully automatically and slowly closed, a first three-way pipe fitting 40 of a hose 44 of the liquid motor 1 is in a negative pressure state at the moment of stopping running at the end of operation in normal operation, a control valve group 42 is rapidly opened to be in a short circuit circulation mode under the back pressure action of a second three-way pipe 53 of the oil return system F, the non-impact running stopping of rotation inertia natural release within 10 to dozens of seconds is realized, and the control valve group 42 can adopt a differential pressure.

Specifically, the method comprises the following steps: and a differential pressure hydraulic control start-stop buffering full-automatic hydraulic anti-collision fan motor control valve 42 is added: when the fan 12 is started, part of high-pressure working oil flows to the cavity B of the normally open valve and the through hole 36 of the E port through the three-way pipe fitting 40, the stop valve 41, the shunt C cavity and the cut-off hole 38, and then returns to the original hydraulic oil tank 30 through the oil return pipeline F and the second three-way pipe 53, so that when the short-time 6-9-second shunt pressure relief full-automatic buffering collision process is achieved, the pressure difference between the left side and the right side of the cut-off hole 38 must form the pressure of the cavity C which is larger than the cavity B, the larger pressure oil of the cavity C flows to the damping cut-off quick return injection integrated valve 34 through the through stop hole 37; at the moment, the main slide valve 33 is upwards slid by the reverse force of the small pressure oil at the upper ends of the slide valves 33 and the cavities B returning to the cavity A dead zone through the damping hole 35 in 6-9 seconds until the E-port through hole 36 is closed, the set oil quantity is completely flushed to the full-speed work-doing operation of the liquid motor, namely the full-speed operation of the 6-9-second buffering starting process is realized, the full-speed operation of the starting process is certainly prevented, the starting collision is prevented from prematurely damaging the precision of the related spline, the swinging is smoothly extended to the central shaft 3 of the liquid motor to follow the swinging, the inner diameter and the axial direction of the liquid motor are excessively worn and damaged, the torque power is certainly weakened or seriously leaked, the slide valves 33 are upwards moved to the E-port through hole 36 to be closed after the collision prevention, the pressure oil is completely returned to a normal operation pipeline, and the hydraulic; when the fan 12 stops supplying oil to do work, the fan 12 rotating at high speed still has strong inertia force and still has a rotation process, when the electromagnetic valve 43 stops supplying oil, high pressure of a high-pressure pipeline is converted into negative pressure at the moment, so that the cavity C and the through stop hole 37 simultaneously generate negative pressure, the pressure of the cavity C is smaller than the back pressure of the cavity B, the damping interception fast back spraying integrated valve 34 automatically sinks and moves backwards, the back pressure of the return oil of the hydraulic motor is 0.1-0.5 mpa pressure and thrust at the top end of the port E36, the through hole 36 of the port E is opened from small to large, the top of the slide valve 33 is fully stressed and bears pressure, the pressure of the cavity B is larger than the negative pressure of the cavity A, the self-dropping force of the slide valve 33 moves downwards, the oil of the cavity A pushes the slide valve 33 to empty the cavity A, the return oil flow is automatically returned to the oil inlet pipeline of the hydraulic motor, and the inertia force of the fan rotating at, and when the liquid motor disappears naturally, the damage to the connection part and the damage to the liquid motor caused by the original speed stop collision are prevented again.

The embodiments of the present invention are not limited to the above embodiments, and according to the contents of the above embodiments of the present invention, the above preferred embodiments can also make modifications, replacements or combinations of other forms by using conventional technical knowledge and conventional means in the field without departing from the basic technical idea of the present invention, and the obtained other embodiments all fall within the scope of the present invention.

Claims (8)

1. A hydraulic control automatic closing, closing and metering valve comprises a hydraulic motor (1), a gap bridge shell (2), an original hydraulic oil tank (30), a stop valve (31), a control valve group (42) and an electromagnetic valve (43), and is characterized in that the hydraulic motor (1) and the gap bridge shell (2) are in sealing connection through a first O-shaped ring (14), the upper portion of the gap bridge shell (2) comprises a leakage-proof lower-discharge centrifugal sheet (19), a first oil seal (21), a second oil seal (22), a thrust bearing (23), a bushing (26), a lining plate (27), a fixing plate (28), a circular groove (29) in case of oil leakage spraying, an upper taper standard bearing (4), a central shaft (3) and a lower cylindrical bearing (5), wherein a first oil sealing cover (6) and a second oil sealing cover (7) are respectively installed on the first oil seal (21) and the second oil seal (22), and are respectively in sealing connection with a third O-shaped ring (25) through a second O-shaped ring (24), the upper end of the central shaft (3) is connected with a fan (12), one side of the gap bridge shell (2) is provided with a leakproof lower oil discharge outlet (20), the other side is provided with an oil return back pressure reverse-spraying lubrication inlet (11), a reverse-spraying lubricating backflow port (10) is arranged below the gap bridge shell (2), the bushing (26), the lining plate (27), the fixing plate (28) and the thrust bearing (23) are arranged between the upper taper standard bearing (4) and the lower cylindrical bearing (5), the pressure difference adjustable control valve group (42) comprises a valve body (32), a slide valve (33), a damping intercepting and fast reverse-spraying integrated valve (34), a damping channel (35), an E-port through hole (36), a through stop hole (37) and an intercepting hole (38), one side of the hydraulic motor (1) is provided with an oil inlet, and the other side of the hydraulic motor is provided with an oil outlet, and the control valve group (42) and the stop valve (31) are arranged between the oil inlet and the oil outlet.

2. The pilot-operated automatic closing, closing and metering valve according to claim 1, characterized in that the fixed plate (28) is fixedly connected to the bridge housing (2) by means of four M16 bolts.

3. The pilot-controlled automatic closing, closing and regulating valve according to claim 1, characterized in that an abdominal cavity pressure gauge (18) is arranged on one side of the bridge housing (2), and the detection end of the abdominal cavity pressure gauge (18) is arranged outside the bridge housing (2) to be communicated with each other.

4. The hydraulic control automatic closing, closing and metering valve as recited in claim 1, characterized in that the first oil seal (21) and the second oil seal (22) are made of fluorine rubber oil seals with high temperature resistance of 250 ℃ and low temperature of-65 ℃.

5. The hydraulic control automatic closing, closing and flow regulating valve according to claim 1, characterized in that a through hole (36) at the right side of the control valve group (42) is connected with a stop valve (31) at the left side of a C port of a hose (44) and an oil inlet of a first three-way pipe fitting (40) to a liquid motor (1), the other side of the control valve group (42) is connected with an oil return port of the liquid motor (1) through the hose (44), the through hole (36) at the E port is connected with an original hydraulic oil tank (30) through the hose (44) and a second three-way pipe fitting (53), the upper part of the second three-way pipe fitting (53) is connected with the original hydraulic oil tank (30) below an oil return port of the liquid motor (1), and the back-pressure back-oil back-spraying lubrication inlet (11) is connected with the oil.

6. The hydraulic control automatic closing, closing and adjusting valve as claimed in claim 1, wherein an oil inlet system of the hydraulic motor (1) is communicated with an oil return system of the hydraulic motor (1) through an E port through hole (36) for standby through a control valve group (42).

7. The pilot-operated automatic closing, closing and metering valve according to claim 1, characterized in that the pilot valve group (42) can adopt a shock energy or mechanical energy or hydraulic energy three-in-one pilot valve or a hydraulic differential pressure pilot valve.

8. The pilot-operated automatic closing, closing and metering valve according to claim 1, characterized in that said pilot valve group (42) is suitable for applications in anti-collision hydraulic systems.

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