CN214063810U - Oil return structure of valve and applied this valve - Google Patents

Abstract

The application relates to a valve and an oil return structure using the same, and relates to the field of fan cooling equipment, wherein the valve comprises a valve body and a valve core, an oil inlet and an oil outlet are formed in the valve body, a valve core cavity for the valve core to pass through is further formed in the valve body, one end of the valve core cavity is communicated with the atmosphere, the oil inlet and the oil outlet are both communicated with one end of the valve core cavity far away from the atmosphere, the valve core is arranged in the valve core cavity in a penetrating mode, the valve core is in threaded connection with the valve body, the valve core is used for plugging the oil inlet or the oil outlet, a first sealing ring is sleeved on the outer peripheral surface of the valve core, and the outer peripheral surface of the first sealing ring is abutted to the inner peripheral surface of one end, close to the atmosphere, of the valve core cavity; the oil return structure comprises a host, an oil tank, an oil pipe and a valve, wherein one end of the oil pipe is communicated with the oil tank, the other end of the oil pipe is communicated with an oil inlet of the valve body, and an oil outlet of the valve is communicated with an air inlet end of the host. In this application, cooling lubricating oil is difficult for overflowing from the valve core chamber, makes cooling lubricating oil be difficult for being wasted, has slowed down cooling lubricating oil's consumption rate.

Description

Oil return structure of valve and applied this valve

Technical Field

The application relates to the field of fan cooling equipment, especially relates to an oil return structure of valve and applied this valve.

Background

The rotary blower is one kind of blower and uses compressed air to realize aeration, so that it is also called aeration blower. The blower eccentrically operates by a rotor offset in a cylinder, and sucks, compresses, and discharges air by changing the volume between vanes in a rotor groove.

Current rotary fan generally includes the base, fixedly connected with oil tank on the base, and the storage has cooling lubricating oil in the oil tank. The base is fixedly connected with a host and an oil-gas separator, the exhaust end of the host is communicated with an oil tank through the oil-gas separator, and the oil tank is communicated with the air inlet end of the host. In the working process, the air pressure of the exhaust end of the main machine is larger than the atmospheric pressure, and then the cooling lubricating oil in the oil tank is pumped to the air inlet end of the main machine. The cooling lubricating oil enters the main machine together with the atmosphere from the air inlet end of the main machine, and cools and lubricates the inner wall of the main machine. The cooling lubricating oil is evaporated in the main machine and then enters the oil-gas separator together with the compressed air, the oil-gas separator cools and separates oil gas in the compressed air to form cooling lubricating oil, and then the separated cooling lubricating oil is discharged into the oil tank for reuse.

The valve is communicated between the oil pipe and the oil tank, and the speed of the cooling lubricating oil flowing into the host can be adjusted by adjusting the opening degree of the valve.

In view of the above-mentioned related art, the inventor believes that, when the pressure at the exhaust end of the main engine suddenly increases, the rate of cooling oil flowing into the valve suddenly increases, and the cooling oil easily leaks from the valve, thereby increasing the consumption rate of the cooling oil.

SUMMERY OF THE UTILITY MODEL

In order to reduce the probability that cooling lubricating oil leaks from the valve, and then slow down cooling lubricating oil's consumption rate, this application provides an oil return structure of valve and applied this valve.

In a first aspect, the present application provides a valve, which adopts the following technical scheme:

a valve comprises a valve body and a valve core, wherein an oil inlet and an oil outlet are formed in the valve body, a valve core cavity for the valve core to penetrate through is further formed in the valve body, one end of the valve core cavity is communicated with the atmosphere, the oil inlet and the oil outlet are communicated with one end, far away from the atmosphere, of the valve core cavity, the valve core is arranged in the valve core cavity in a penetrating mode, the valve core is in threaded connection with the valve body, the valve core is used for plugging the oil inlet or the oil outlet, a first sealing ring is sleeved on the outer peripheral face of the valve core, and the outer peripheral face of the first sealing ring is abutted to the inner peripheral face of one end, close to the atmosphere, of the valve core cavity.

Through adopting above-mentioned technical scheme, cooling lubricating oil gets into the case chamber from the oil inlet, later from oil-out discharge case chamber, the setting of first sealing ring cuts off case chamber and atmosphere, and when the cooling lubricating oil quantity that gets into in the case chamber increased suddenly, cooling lubricating oil was difficult for spilling over from the case chamber, makes cooling lubricating oil be difficult for being wasted, slows down cooling lubricating oil's consumption rate.

Optionally, a sealing ring groove is formed in the outer peripheral surface of the valve core, and the first sealing ring is clamped in the sealing ring groove.

By adopting the technical scheme, when the valve core is installed, the first sealing ring is clamped in the sealing ring groove, and then the valve core is arranged in the valve core cavity in a penetrating manner, so that the first sealing ring is not easy to slide relative to the valve core, and the valve core is convenient to install; and when the valve core is adjusted, gaps are not easy to generate between the first sealing ring and the valve core and between the first sealing ring and the inner wall of the valve core cavity, so that the probability of leakage of cooling lubricating oil from the valve core cavity is reduced.

Optionally, the case includes shutoff portion, screw thread portion and sealing, shutoff portion, screw thread portion, sealing all are coaxial setting, the sealing sets up one side that the shutoff portion was kept away from to screw thread portion, the diameter of screw thread portion is not less than the diameter of shutoff portion, the diameter of sealing is greater than the diameter of screw thread portion, the seal ring groove is seted up on the sealing.

Through adopting above-mentioned technical scheme, when establishing first sealing ring to the cover on the sealed annular, relative friction takes place for difficult and screw thread portion of first sealing ring, has reduced the probability of first sealing ring by the external screw thread fish tail on the screw thread portion, has improved the leakproofness of first sealing ring.

Optionally, a first guide surface is disposed between the threaded portion and the sealing portion.

By adopting the technical scheme, when the first sealing ring is sleeved on the sealing ring groove, the first sealing ring can more easily cross the shaft shoulder between the thread part and the sealing part, so that the first sealing ring is conveniently sleeved in the sealing ring groove; and when the first sealing ring crosses the shaft shoulder between the threaded part and the sealing part, the first sealing ring is not easily scratched by the shaft shoulder, and the sealing performance of the first sealing ring is improved.

Optionally, the valve element further includes a handheld portion, the handheld portion is disposed on a side of the sealing portion away from the threaded portion, and the handheld portion is disposed outside the valve element cavity.

Through adopting above-mentioned technical scheme, when the aperture of needs governing valve, operating personnel can make whole valve body rotate through twisting handheld portion, the regulation of the valve aperture of being convenient for.

In a second aspect, the present application provides an oil return structure, which adopts the following technical scheme:

an oil return structure comprises a host, an oil tank, an oil pipe and a valve according to the first aspect, wherein one end of the oil pipe is communicated with the oil tank, the other end of the oil pipe is communicated with an oil inlet of a valve body, and an oil outlet of the valve is communicated with an air inlet end of the host.

Through adopting above-mentioned technical scheme, when the pressure in the oil tank increases suddenly, under the effect of first sealing ring in the valve, cooling lubricating oil is difficult for leaking from the valve, makes cooling lubricating oil be difficult for being wasted, slows down cooling lubricating oil's consumption rate.

Optionally, an oil cup is further arranged between the valve and the host, one end of the oil cup is communicated with an oil outlet of the valve, the other end of the oil cup is communicated with an air inlet of the host, the oil cup is vertically arranged, the oil cup is arranged below the valve, and the oil cup is in a transparent arrangement.

By adopting the technical scheme, the cooling lubricating oil passing through the valve flows into the oil cup under the action of gravity, and the oil cup is transparent, so that an operator can observe the flow of the cooling lubricating oil in the oil cup conveniently; when the pressure at the air outlet end of the main machine changes, an operator can adjust the valve core according to the flow of the cooling lubricating oil in the observation oil cup, so that the flow of the cooling lubricating oil is kept constant.

Optionally, the upper end of the oil cup is in threaded connection with the valve body, a second sealing ring is sleeved at one end, close to the oil cup, of the valve body, one end of the second sealing ring is abutted to the valve body, and the other end of the second sealing ring is abutted to the oil cup.

By adopting the technical scheme, the probability of leakage of the cooling lubricating oil from the valve and the oil cup is reduced, the cooling lubricating oil is not easy to waste, and the consumption rate of the cooling lubricating oil is reduced; meanwhile, the flow of the cooling lubricating oil flowing through the oil cup is more stable, so that an operator can conveniently adjust the valve core according to the flow of the cooling lubricating oil in the oil cup.

Optionally, a metal ring is fixedly connected in the oil cup, the metal ring is in threaded connection with the valve body, the second sealing ring is arranged between the metal ring and the valve body, and the oil cup is made of transparent glass or transparent plastic.

In order to reduce the leakage probability of the cooling lubricating oil from the position between the oil cup and the valve body, the oil cup and the valve body need to clamp the second sealing ring, and the oil cup is easy to damage when bearing large pressure.

Optionally, an oil dripping bucket is fixedly connected to the inner wall of the oil cup, the oil dripping bucket divides the interior of the oil cup into an oil storage cavity and an oil dripping cavity, the oil storage cavity is communicated with an oil outlet of the valve body, the oil dripping cavity is communicated with the oil storage cavity through the oil dripping bucket, the oil dripping cavity is further communicated with an air inlet end of the host, the aperture of the lower end of the oil dripping bucket is smaller than that of the upper end of the oil dripping bucket, and the lower end of the oil dripping bucket is not attached to the inner wall of the oil cup.

By adopting the technical scheme, the cooling lubricating oil is stored in the oil storage cavity after entering the oil cup, and is gradually accumulated in the oil dripping hopper, and when the cooling lubricating oil in the oil dripping hopper is accumulated to be sufficiently dripped, the cooling lubricating oil is dripped into the oil dripping cavity from the lower end of the oil dripping hopper; because the lower extreme of dripping the oil fill does not laminate with the inner wall of oil cup, oil drips and is difficult for diffusing to the inner wall in oil drip chamber when dripping the oil pocket on, and then the operating personnel of being convenient for observes the speed of dripping oil.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the setting of first sealing ring, when the pressure in the oil tank increases, cooling lubricating oil is difficult for overflowing from the valve core chamber because of the pulsation phenomenon, makes cooling lubricating oil be difficult to be wasted, slows down cooling lubricating oil's consumption rate.

2. Through setting up the diameter with the sealing to be greater than the diameter of screw thread portion, when to the first sealing ring of joint in the sealing ring groove, first sealing ring is difficult by the screw thread fish tail on the screw thread portion, has protected first sealing ring, has improved the leakproofness of first sealing ring, has reduced the probability that cooling lubricating oil leaked from first sealing ring.

3. Through the setting of first spigot surface, when the first sealing ring of joint in to the sealing ring groove, first sealing ring is difficult by the shaft shoulder fish tail between sealing and the screw thread portion, has protected first sealing ring, has improved the leakproofness of first sealing ring, has reduced the probability that cooling lubricating oil leaked from first sealing ring.

4. Through the setting of the oil cup, the flow of the cooling lubricating oil in the oil cup can be conveniently observed by an operator, the flow of the cooling lubricating oil is kept constant by the operator through the flow adjusting valve core of the cooling lubricating oil in the oil cup, the waste of the cooling lubricating oil can be reduced, and the probability of overheating of a main machine can be reduced.

Drawings

Fig. 1 is a schematic view of an overall structure of a rotary fan in the related art;

fig. 2 is a schematic cross-sectional view showing the overall structure of a valve in the related art;

FIG. 3 is a schematic view of the overall structure of a valve according to an embodiment of the present invention;

FIG. 4 is a schematic exploded sectional view of a valve according to an embodiment of the present application;

FIG. 5 is a schematic view of the overall structure of an oil return structure according to an embodiment of the present application;

FIG. 6 is a schematic view of the overall structure of an oil cup according to an embodiment of the present application;

FIG. 7 is a schematic cross-sectional view of an oil cup according to an embodiment of the present application;

fig. 8 is a schematic cross-sectional view of a valve and oil cup mounting structure according to an embodiment of the present application.

Description of reference numerals: 100. a valve; 200. a valve body; 210. a body; 220. an oil inlet pipe; 221. an anti-slip groove; 230. an oil inlet; 240. an oil outlet; 250. a spool cavity; 260. a second connecting portion; 270. a first flat groove; 300. a valve core; 310. a plugging section; 320. a threaded portion; 330. a sealing part; 331. sealing the ring groove; 332. a first guide surface; 333. a second guide surface; 340. a first connection portion; 350. a hand-held portion; 360. a first seal ring; 400. an oil cup; 410. a second flat groove; 420. an oil dripping hopper; 421. a conical section; 422. a cylindrical portion; 430. an oil storage cavity; 440. an oil dripping cavity; 500. a metal ring; 510. a second seal ring; 600. a base; 610. a host; 611. a rotor; 620. an oil tank; 630. an oil pipe; 640. a drive motor; 650. and an oil-gas separator.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

Referring to fig. 1, in the related art, a rotary fan includes a base 600, a main unit 610 is fixedly connected to the base 600 through bolts, and a rotor 611 for compressing air is rotatably connected to the main unit 610. The main body 610 is provided with an air inlet and an air outlet, and air in the atmosphere enters the main body 610 through the air inlet and is discharged out of the main body 610 through the air outlet. The base 600 is further fixedly connected with a driving motor 640 through bolts, and the driving motor 640 is in transmission connection with the rotor 611 through a belt. The base 600 is further fixedly connected with an oil tank 620 through bolts, cooling lubricating oil is stored in the oil tank 620, and the oil tank 620 is communicated with the air inlet end of the main machine 610 through an oil pipe 630.

When the rotary fan is started, air enters the main unit 610 from an air inlet of the main unit 610, cooling lubricating oil in the oil tank 620 flows into the main unit 610 to lubricate and cool the inner wall of the main unit 610, the cooling lubricating oil in the main unit 610 absorbs heat and evaporates to be blended into compressed air, and the compressed air is discharged out of the main unit 610 from an air outlet of the main unit 610.

The base 600 is further fixedly connected with an oil-gas separator 650 through bolts, and a gas inlet of the oil-gas separator 650 is communicated with a gas outlet of the main unit 610. After the compressed air enters the oil-gas separator 650, the oil-gas separator 650 separates out the cooling lubricant oil in the compressed air. An oil outlet is formed in the oil-gas separator 650, the oil outlet of the oil-gas separator 650 is communicated with the oil tank 620, and the cooling lubricating oil precipitated from the oil-gas separator 650 flows into the oil tank 620 under the compression action of the compressed air. Under the action of the compressed air in the air-oil separator 650, the cooling lubricant oil in the oil tank 620 flows into the main machine 610 again, and thus the automatic circulation of the cooling lubricant oil is realized.

Referring to fig. 1 and 2, a valve 100 is further disposed between the main body 610 and the oil pipe 630, the valve 100 includes a valve body 200 and a valve core 300, the valve body 200 includes a body 210 and an oil inlet pipe 220, and the oil inlet pipe 220 and the valve body 200 are integrally formed. The oil inlet pipe 220 is provided with an oil inlet 230, the valve body 200 is provided with a valve core cavity 250 and an oil outlet 240, and the oil inlet 230, the valve core cavity 250 and the oil outlet 240 are communicated in sequence. One end of the oil pipe 630, which is far away from the oil tank 620, is communicated with the oil inlet 230, and the oil outlet 240 of the valve body 200 is communicated with the air inlet end of the main machine 610.

Referring to fig. 1 and 2, the valve core 300 is inserted into the valve core chamber 250, and the valve core 300 is screwed to the valve body 200. One end of the valve core 300 penetrating through the valve core cavity 250 is arranged in a conical shape and is inserted into the oil outlet 240 of the valve body 200, and the opening degree of the oil outlet 240 can be controlled by adjusting the depth of the valve core 300 inserted into the valve core cavity 250, so as to control the flow of the cooling lubricating oil flowing through the valve 100.

When the air pressure at the air outlet of the main unit 610 is suddenly increased, the air pressure in the air-oil separator 650 is also suddenly increased, so that the pressure of the cooling lubricating oil in the oil tank 620 is increased, the cooling lubricating oil is subjected to a pulsation phenomenon in the oil pipe 630 and the valve body 200, and the cooling lubricating oil in the valve core cavity 250 is easily overflowed, so that the waste of the cooling lubricating oil is caused, and the loss of the cooling lubricating oil is accelerated.

In order to reduce the probability of leakage of the cooling lubricant from the valve 100 and further slow down the consumption rate of the cooling lubricant, the embodiment of the present application provides a valve 100 and an oil return structure using the valve 100.

Referring to fig. 3 and 4, in the embodiment of the present invention, a valve is first provided, and the valve 100 includes a valve body 200 and a valve element 300 for controlling the flow of cooling oil. The valve body 200 includes a body 210 and an oil inlet pipe 220, the body 210 is arranged in a cylindrical shape, a valve core chamber 250 is opened on the body 210, the valve core chamber 250 and the body 210 are coaxially arranged, and one end of the valve core chamber 250 is communicated with the atmosphere.

Referring to fig. 3 and 4, the oil inlet pipe 220 is integrally formed with the body 210, in the embodiment of the present invention, the oil inlet pipe 220 is disposed on a sidewall of the body 210, and an axis of the body 210 is perpendicular to an axis of the oil inlet pipe 220. The oil inlet pipe 220 is provided with an oil inlet 230, and the body 210 is further provided with an oil outlet 240. In the embodiment of the present application, the oil outlet 240 is coaxially disposed with the spool cavity 250, and the oil inlet 230 communicates with the oil outlet 240 through the spool cavity 250.

Referring to fig. 3 and 4, the spool 300 includes a blocking portion 310 for blocking the oil outlet 240, a threaded portion 320 for connection with the body 210, and a sealing portion 330 for sealing the spool chamber 250. The blocking portion 310, the threaded portion 320, and the sealing portion 330 are disposed in this order, and the blocking portion 310, the threaded portion 320, and the sealing portion 330 are all disposed coaxially. The diameter of the blocking portion 310 is not greater than that of the threaded portion 320, in the embodiment of the present application, the diameter of the blocking portion 310 is smaller than that of the threaded portion 320, one end of the blocking portion 310, which is far away from the threaded portion 320, is in a tapered shape, and the diameter of the oil drain port is smaller than that of the blocking portion 310.

After the valve core 300 is inserted into the valve core chamber 250, the valve core 300 is rotated along the axis of the threaded portion 320, so that the valve core 300 is fixed on the body 210, and at this time, one end of the blocking portion 310, which is far away from the threaded portion 320, extends into the oil drain port. When the valve element 300 is rotated to gradually increase the depth of the valve element 300 inserted into the valve element chamber 250, the blocking portion 310 gradually blocks the oil drain port until the oil drain port is completely blocked.

In another embodiment, the oil inlet pipe 220 may be disposed coaxially with the spool chamber 250, the axial center of the oil outlet 240 is perpendicular to the axial center of the spool chamber 250, and the oil inlet 230 communicates with the oil outlet 240 through the spool chamber 250. After the valve core 300 is inserted into the valve core chamber 250, the valve core 300 is rotated along the axis of the threaded portion 320, so that the valve core 300 is fixed on the body 210, and at this time, one end of the blocking portion 310, which is far away from the threaded portion 320, extends into the oil inlet 230. When the valve core 300 is rotated to enable the depth of the valve core 300 inserted into the valve core cavity 250 to become deeper gradually, the blocking portion 310 blocks the oil inlet 230 gradually until the oil inlet 230 is completely blocked.

Referring to fig. 4, the valve cartridge 300 further includes a first sealing ring 360, a diameter of the sealing portion 330 is greater than a diameter of the screw portion 320, and a sealing ring groove 331 for engaging with the first sealing ring 360 is formed on an outer circumferential surface of the sealing portion 330. The first sealing ring 360 is clamped in the first sealing ring 360, and when the valve core 300 is inserted into the valve core chamber 250, the outer circumferential surface of the first sealing ring 360 abuts against the inner circumferential surface of the valve core chamber 250, so that the first sealing ring 360 can seal the valve core chamber 250. The sealing ring grooves 331 can be provided with a plurality of sealing parts 330 along the axial direction of the sealing parts 330, and one first sealing ring 360 is clamped in one sealing ring groove 331, so that the first sealing ring 360 can perform multi-stage sealing on the valve core cavity 250, and the sealing effect of the valve core cavity 250 is improved.

Referring to fig. 4, the valve core 300 further includes a first connecting portion 340 and a handheld portion 350, the first connecting portion 340 is disposed at an end of the sealing portion 330 away from the threaded portion 320, the handheld portion 350 is disposed at an end of the first connecting portion 340 away from the sealing portion 330, and the first connecting portion 340, the handheld portion 350 and the sealing portion 330 are coaxially disposed. A first guide surface 332 is disposed between the threaded portion 320 and the sealing portion 330, and when the first sealing ring 360 is sleeved in the sealing ring groove 331, the first sealing ring 360 is gradually sleeved from the blocking portion 310 to the sealing portion 330. The first guide surface 332 is arranged to make the first sealing ring 360 more easily pass over the shoulder between the threaded portion 320 and the sealing portion 330, and when the first sealing ring 360 passes over the shoulder between the threaded portion 320 and the sealing portion 330, the first sealing ring 360 is not easily scratched by the shoulder, and further the sealing performance of the first sealing ring 360 is not easily damaged.

Referring to fig. 4, the diameter of the first connection portion 340 is smaller than that of the sealing portion 330, and when the sealing portion 330 is inserted into the spool chamber 250, the first connection portion 340 is not easily contacted by the inner wall of the spool chamber 250, thereby reducing resistance when the spool 300 is inserted into the spool chamber 250. When the valve core 300 is installed and the first sealing ring 360 falls off, the first sealing ring 360 falls off to the first connecting portion 340, so that an operator can observe the installation condition of the first sealing ring 360 conveniently. The second guide surface 333 has been seted up between first connecting portion 340 and the sealing 330, because the setting of second guide surface 333, be convenient for slide to the sealing 330 to the sealing ring that drops to first connecting portion 340 on, first sealing ring 360 is crossing the shaft shoulder between first connecting portion 340 and the sealing 330 in addition, and first sealing ring 360 is difficult by this shaft shoulder fish tail, and then the difficult leakproofness of destroying first sealing ring 360.

Referring to fig. 4, the diameter of the holding portion 350 is larger than that of the sealing portion 330, and when the threaded portion 320 is threadedly coupled with the body 210, the holding portion 350 is located outside the spool chamber 250. The operator can rotate the entire valve element 300 by rotating the hand-held part 350, and because the diameter of the hand-held part 350 is larger than that of the sealing part 330, a labor-saving lever is formed between the hand-held part 350 and the sealing part 330, so that the operator can rotate the valve element 300 conveniently. The outer peripheral surface of the handheld portion 350 is provided with anti-slip lines, so that the friction coefficient of the handheld portion 350 is increased, and the rotation resistance between the first sealing ring 360 and the inner wall of the valve core cavity 250 is overcome.

Referring to fig. 5, an oil return structure is further provided in an embodiment of the present application, where the oil return structure includes a frame, a main frame 610, an oil tank 620, and an oil pipe 630, the main frame 610 is fixedly connected to the frame through a bolt, the oil tank 620 is clamped to the frame, and the oil tank 620 is disposed below the main frame 610.

Referring to fig. 4 and 5, the oil pipe 630 is a rubber hose, one end of the oil pipe 630 is communicated with the bottom of the oil tank 620, and one end of the oil pipe 630, which is far away from the filter element, is sleeved on the oil inlet pipe 220, so that the oil pipe 630 is communicated with the oil inlet 230. An anti-slip groove 221 is formed in the outer peripheral surface of the oil inlet pipe 220, the cross section of the anti-slip groove 221 is in a right triangle shape, so that the anti-slip groove 221 is obliquely arranged near one side wall of the body 210, and the anti-slip groove 221 is far away from one side wall of the body 210 and is perpendicular to the axis of the oil inlet pipe 220. Therefore, the force required for sleeving the oil pipe 630 on the oil inlet pipe 220 is smaller than the force for pulling the oil pipe 630 off the oil inlet pipe 220, so that an operator can conveniently install the oil pipe 630 on the oil inlet pipe 220. In order to reduce the probability of the oil pipe 630 falling off from the oil inlet pipe 220, a plurality of anti-slip grooves 221 may be uniformly arranged along the axial direction of the oil inlet pipe 220.

Referring to fig. 5 and 6, an oil cup 400 is further disposed between the valve 100 and the main body 610, the oil cup 400 is made of transparent glass or transparent plastic, so that the oil cup 400 is disposed in a transparent manner, and an end of the oil cup 400 away from the valve 100 is screwed to the main body 610.

Referring to fig. 6 and 7, an oil dropping funnel 420 is integrally formed on an inner wall of the oil cup 400, the oil dropping funnel 420 divides the interior of the oil cup 400 into an oil storage chamber 430 and an oil dropping chamber 440, and the oil dropping chamber 440 is communicated with the oil storage chamber 430 through the oil dropping funnel 420. In use, the oil cup 400 is vertically arranged, and the oil storage cavity 430 is positioned at the upper end of the oil dripping cavity 440. The oil dripping bucket 420 and the oil cup 400 are coaxially arranged, the oil dripping bucket 420 comprises a conical part 421 and a cylindrical part 422, and the aperture of one end of the cylindrical part close to the oil dripping cavity 440 is smaller than that of one end far away from the oil dripping cavity 440. The cylindrical portion 422 is provided at one end of the conical portion 421 near the drip chamber 440, and the outer circumferential surface of the cylindrical portion 422 does not abut on the inner wall of the oil cup 400.

Referring to fig. 8, the oil cup 400 is connected to the body 210 through a metal ring 500, and the metal ring 500 is coaxially inserted into the oil cup 400 such that the metal ring 500 communicates with the oil reservoir 430. An inner thread is formed on the inner circumferential surface of the metal ring 500, a second connecting portion 260 is arranged at one end of the body 210, at which the oil outlet 240 is formed, an outer thread is formed on the outer circumferential surface of the second connecting portion 260, and one end of the body 210, at which the oil outlet 240 is formed, is in threaded connection with the metal ring 500, so that the oil outlet 240 is communicated with the oil storage cavity 430.

Referring to fig. 8, the second connection portion 260 is sleeved with a second sealing ring 510, one axial end of the second sealing ring 510 abuts against the body 210, and the other axial end of the second sealing ring 510 abuts against the metal ring 500, so that the body 210 and the oil cup 400 are sealed.

In order to press the body 210 and the metal ring 500 against the second seal ring 510 and further improve the sealing performance of the second seal ring 510, referring to fig. 3 and 6, a first flat groove 270 is formed on the outer circumferential surface of the body 210, and a second flat groove 410 is formed on the outer circumferential surface of the oil cup 400. Therefore, an operator can tighten the body 210 and the oil cup 400 by using a wrench, and the sealing performance of the second sealing ring 510 is improved. In order to reduce the possibility of breakage of the oil cup 400 when the body 210 and the oil cup 400 are screwed together, the second flat groove 410 is formed at the end of the oil cup 400 where the metal ring 500 is fitted.

The implementation principle of the oil return structure of a valve and applied this valve of the embodiment of this application is:

in normal operation, the cooling lubricant in the oil tank 620 flows into the valve 100 under pressure, and then flows into the oil storage chamber 430, the cooling lubricant in the oil storage chamber 430 drops into the oil dropping chamber 440 through the oil dropping funnel 420, and an operator can observe the dropping speed of the cooling lubricant through the oil cup 400.

When the oil pressure in the oil tank 620 is suddenly increased, the cooling lubricating oil generates pressure pulsation in the oil pipe 630 and the spool chamber 250, and due to the obstruction of the first sealing ring 360, the cooling lubricating oil is not easy to overflow from the spool chamber 250, so that the cooling lubricating oil is not easy to waste, and the consumption rate of the cooling lubricating oil is reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The valve comprises a valve body (200) and a valve core (300), wherein an oil inlet (230) and an oil outlet (240) are formed in the valve body (200), a valve core cavity (250) for the valve core (300) to penetrate through is further formed in the valve body (200), one end of the valve core cavity (250) is communicated with the atmosphere, the oil inlet (230) and the oil outlet (240) are communicated with one end, far away from the atmosphere, of the valve core cavity (250), the valve core (300) is arranged in the valve core cavity (250) in a penetrating mode, the valve core (300) is in threaded connection with the valve body (200), and the valve core (300) is used for plugging the oil inlet (230) or the oil outlet (240), and is characterized in that: the outer peripheral surface of the valve core (300) is sleeved with a first sealing ring (360), and the outer peripheral surface of the first sealing ring (360) is abutted against the inner peripheral surface of one end, close to the atmosphere, of the valve core cavity (250).

2. A valve according to claim 1, wherein: the outer peripheral surface of the valve core (300) is provided with a sealing ring groove (331), and the first sealing ring (360) is clamped in the sealing ring groove (331).

3. A valve according to claim 2, wherein: the valve core (300) comprises a plugging portion (310), a threaded portion (320) and a sealing portion (330), wherein the plugging portion (310), the threaded portion (320) and the sealing portion (330) are coaxially arranged, the sealing portion (330) is arranged on one side, away from the plugging portion (310), of the threaded portion (320), the diameter of the threaded portion (320) is not smaller than that of the plugging portion (310), the diameter of the sealing portion (330) is larger than that of the threaded portion (320), and a sealing ring groove (331) is formed in the sealing portion (330).

4. A valve according to claim 3, wherein: a first guide surface (332) is arranged between the threaded part (320) and the sealing part (330).

5. A valve according to claim 3, wherein: the valve core (300) further comprises a handheld portion (350), the handheld portion (350) is arranged on one side, away from the threaded portion (320), of the sealing portion (330), and the handheld portion (350) is arranged outside the valve core cavity (250).

6. An oil return structure, includes host computer (610), oil tank (620) and oil pipe (630), its characterized in that: the valve (100) as claimed in any one of claims 1 to 5, wherein one end of the oil pipe (630) is communicated with the oil tank (620), the other end of the oil pipe (630) is communicated with the oil inlet (230) of the valve body (200), and the oil outlet (240) of the valve (100) is communicated with the air inlet of the main engine (610).

7. The oil return structure according to claim 6, wherein: the oil cup is characterized in that an oil cup (400) is further arranged between the valve (100) and the host (610), one end of the oil cup (400) is communicated with an oil outlet (240) of the valve (100), the other end of the oil cup (400) is communicated with an air inlet end of the host (610), the oil cup (400) is vertically arranged, the oil cup (400) is arranged below the valve (100), and the oil cup (400) is arranged in a transparent mode.

8. The oil return structure according to claim 7, wherein: the upper end of oil cup (400) with valve body (200) threaded connection, valve body (200) are close to the pot head of oil cup (400) is equipped with second sealing ring (510), the one end of second sealing ring (510) with valve body (200) butt, the other end and the oil cup (400) butt of second sealing ring (510).

9. The oil return structure according to claim 8, wherein: the oil cup (400) is internally and fixedly connected with a metal ring (500), the metal ring (500) is in threaded connection with the valve body (200), the second sealing ring (510) is arranged between the metal ring (500) and the valve body (200), and the oil cup (400) is made of transparent glass or transparent plastic.

10. The oil return structure according to any one of claims 7 to 9, characterized in that: fixedly connected with oil drip fill (420) on the inner wall of oil cup (400), oil drip fill (420) separates oil cup (400) internal partitioning for depositing oil pocket (430) and dripping oil pocket (440), deposit oil pocket (430) with oil-out (240) the intercommunication of valve body (200), drip oil pocket (440) and pass through oil drip fill (420) with deposit oil pocket (430) intercommunication, drip oil pocket (440) still with the inlet end intercommunication of host computer (610), the aperture of dripping oil fill (420) lower extreme is less than the aperture of self upper end, just the lower extreme of dripping oil fill (420) not with the inner wall laminating of oil cup (400).

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