Push-pull exhaust type three-way valve

Abstract

The utility model discloses a push-pull exhaust type three-way valve, which relates to the technical field of three-way valves, aims to solve the technical problem that the current push-pull exhaust type three-way valve is easy to carry oil liquid droplets to be simultaneously exhausted from an exhaust cavity during exhaust, and comprises a push-pull exhaust type three-way valve main body. According to the push-pull exhaust type three-way valve, the spiral flow guide blade is arranged in the exhaust cavity of the push-pull exhaust type three-way valve body and is the Archimedes spiral, so that the exhaust cavity forms an Archimedes spiral curved surface structure, when exhaust is conducted through the exhaust cavity, efficient gas-liquid separation is achieved through the centrifugal force principle, and when mixed fluid enters the exhaust cavity, the gas-liquid separation effect is improved. Liquid with large density is thrown to the wall face of the channel under the action of centrifugal force and flows back to the inlet cavity along the spiral path, gas is exhausted upwards from the center shaft, and compared with a traditional straight-cylinder-shaped channel, the structure can improve the exhaust speed and can completely eradicate the situation that liquid media are entrained and exhausted.

Description

TECHNICAL FIELD

[0001] The utility model relates to a three-way valve technical field, more specifically, relate to a kind of push-pull exhaust three-way valve. BACKGROUND

[0002] The push-pull exhaust three-way valve is a valve device for controlling the flow direction of fluid (such as gas or liquid) and performing exhaust operation, commonly used in some systems that require precise control of fluid flow direction and pressure regulation, such as air conditioning systems, hydraulic systems, etc. The push-pull exhaust three-way valve is mainly driven by external personnel or hydraulic push-pull to move the valve core. One end of the three-way valve is an inlet chamber, the other end is an outlet chamber, and the top is an exhaust chamber. During the non-exhaust stage, the control valve core blocks the exhaust chamber, and the inlet chamber and outlet chamber are unobstructed. At this time, normal liquid discharge can be performed. If exhaust is required, the control valve core blocks the outlet chamber, and the inlet chamber and the exhaust chamber are connected. The accumulated air (with low density, floating above the oil) in the system is discharged through the exhaust chamber, while the hydraulic oil cannot flow out of the outlet chamber due to the sealing effect of the valve core on the outlet chamber (the oil needs to circulate through the main outlet).

[0003] When the existing push-pull exhaust three-way valve discharges the free gas floating in the hydraulic oil through the exhaust chamber, the dissolved air in the hydraulic oil is released to form bubbles when the pressure changes. When the gas is discharged from the exhaust chamber, especially under fast exhaust or system vibration conditions, oil droplets are also discharged from the exhaust chamber, causing oil entrainment. This can lead to hydraulic oil loss. As the oil is carried out, it pollutes the environment and increases costs. Fluctuations in oil level can cause system pressure instability. In view of this, a push-pull exhaust three-way valve is proposed. SUMMARY

[0004] The utility model aims to overcome the shortcomings of the prior art, meet the needs of reality, and provide a push-pull exhaust three-way valve to solve the technical problem that the current push-pull exhaust three-way valve easily carries oil droplets from the exhaust chamber during exhaust.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a push-pull exhaust three-way valve, comprising a push-pull exhaust three-way valve body, one end of the push-pull exhaust three-way valve body is an inlet chamber, the other end of the push-pull exhaust three-way valve body is an outlet chamber, and the top end of the push-pull exhaust three-way valve body is an exhaust chamber. The exhaust chamber is internally arranged with a spiral flow guide vane, and the spiral flow guide vane is an Archimedes spiral.

[0006] The bottom of the spiral flow guide vane in the exhaust chamber is arranged with a bionic gill rake-shaped flow guide piece. The bionic gill rake-shaped flow guide piece is a comb-shaped structure on the inner side of the gill arch of fish.

[0007] Preferably, the spiral guide vane comprises a first spiral stage, a second spiral stage and a third spiral stage, the first spiral stage, the second spiral stage and the third spiral stage are arranged in sequence from bottom to top, and the top end of the first spiral stage is connected with the bottom end of the second spiral stage, and the top end of the second spiral stage is connected with the bottom end of the third spiral stage.

[0008] Preferably, the pitch of the first spiral stage, the second spiral stage and the third spiral stage increases in sequence, and the spiral angle of the first spiral stage, the second spiral stage and the third spiral stage decreases in sequence.

[0009] Preferably, the bionic gill rake guide vane is a three-dimensional array similar to a "rotating comb tooth ring" formed by a plurality of groups of inverted triangular guide vanes distributed equidistantly along the circumference.

[0010] Preferably, the left waist of the inverted triangular guide vane is vertically arranged on the inner wall of the exhaust cavity, and the right waist is inclined to the exhaust port by 30 degrees.

[0011] Preferably, the distance between the roots of adjacent inverted triangular guide vanes in the bionic gill rake guide vane is 0.2mm.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1、The utility model discloses a spiral guide vane is arranged in the exhaust cavity of the main part of the push-pull exhaust type three-way valve, and the spiral guide vane is an Archimedes spiral, so that the exhaust cavity forms an Archimedes spiral surface structure, when exhausting through the exhaust cavity, centrifugal force principle is utilized to realize efficient separation of gas and liquid, when mixed fluid enters the exhaust cavity, liquid with greater density is thrown to the channel wall under the action of centrifugal force and backflows to the inlet cavity along the spiral path, and gas is discharged upwards from the central axis, compared with the traditional straight cylinder type channel, the structure can not only improve the exhaust speed, but also can prevent the situation that liquid medium is carried and discharged, technical problems that the push-pull exhaust type three-way valve is easy to carry oil liquid droplets and discharge from the exhaust cavity at the same time are solved, and therefore, the utility model has the advantages of preventing oil liquid loss.

[0014] 2, the utility model discloses still set up bionic gill harrow -like guide vane below spiral guide vane, and bionic gill harrow -like guide vane is formed by the equidistance arrangement of several groups of single inverted triangle guide vane along circumference, and the distance of adjacent inverted triangle guide vane root is 0.2mm (slightly greater than the common oil drop diameter 50-100um in hydraulic oil), forms the three -dimensional array similar to " rotating comb tooth ring", and the left waist of inverted triangle guide vane is arranged on the inner wall of exhaust chamber perpendicularly, and the right waist is inclined 30 ° (forms gas guide curved surface) to the direction of exhaust port, and the tip angle of inverted triangle guide vane is 45 ° (imitates the fluid cutting effect of gill harrow tip), optimizes the gas flow direction, guides the bubble to rise along the curved surface using the coanda effect (wall effect), and the curved surface design makes the gas flow follow the coanda effect, and forms spiral rising flow closely to the wall, reduces the turbulence caused by the direct impact of gas on exhaust port, and the oil drop gathers at the root of inverted triangle guide vane because of the inability to overcome the curved surface adhesion and viscosity resistance, then returns to the entrance chamber, avoids being discharged with gas, then cooperates with the spiral guide vane in exhaust chamber, forms the gas -liquid cyclone separation field, and further improves separation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is whole structure schematic diagram of the utility model;

[0016] Figure 2 It is cross section structure schematic diagram of the utility model;

[0017] Figure 3 It is spiral guide vane structure schematic diagram of the utility model;

[0018] Figure 4 It is bionic gill harrow -like guide vane first structure schematic diagram of the utility model;

[0019] Figure 5 It is bionic gill harrow -like guide vane second structure schematic diagram of the utility model;

[0020] Figure 6 It is inverted triangle guide vane structure schematic diagram of the utility model.

[0021] Mark explanation in drawing:

[0022] 1, push -and -pull exhaust formula tee valve main part;101, entrance chamber;102, outlet chamber;103, exhaust chamber;2, spiral guide vane;201, first spiral stage;202, second spiral stage;203, third spiral stage;3, bionic gill harrow -like guide vane;301, inverted triangle guide vane. DETAILED DESCRIPTION

[0023] As Figures 1 to 6As shown, the utility model relates to a kind of push-pull exhaust formula three-way valve, including push-pull exhaust formula three-way valve main body 1, one end of push-pull exhaust formula three-way valve main body 1 is inlet cavity 101, the other end of push-pull exhaust formula three-way valve main body 1 is outlet cavity 102, the top end of push-pull exhaust formula three-way valve main body 1 is exhaust cavity 103, spiral flow guide blade 2 is arranged in exhaust cavity 103, and spiral flow guide blade 2 is Archimedes spiral;

[0024] When push-pull exhaust formula three-way valve main body 1 is used, when non-exhaust state, hydraulic structure on push-pull exhaust formula three-way valve main body 1 pushes its inner valve core to block exhaust cavity 103, at this time, inlet cavity 101 and outlet cavity 102 are unobstructed, at this time, oil is normally transported, when needing to exhaust, hydraulic structure on push-pull exhaust formula three-way valve main body 1 pushes its inner valve core to block outlet cavity 102, at this time, exhaust cavity 103 is opened, then air (small, float on oil) accumulated in system is discharged through exhaust cavity 103;

[0025] Spiral flow guide blade 2 makes exhaust cavity 103 form Archimedes spiral curved surface structure, when exhausting through exhaust cavity 103, realize gas-liquid efficient separation using centrifugal force principle, when mixed fluid enters exhaust cavity 103, liquid with greater density is thrown to channel wall under the action of centrifugal force, and backflow to inlet cavity 101 along spiral path, and gas is discharged from central axis, compared with traditional straight cylinder channel, this structure can not only improve exhaust speed, but also can prevent the situation that liquid medium is carried out.

[0026] Specifically, the spiral guide vane 2 comprises a first spiral stage 201, a second spiral stage 202 and a third spiral stage 203, the first spiral stage 201, the second spiral stage 202 and the third spiral stage 203 are arranged in sequence from bottom to top, and the top end of the first spiral stage 201 is connected with the bottom end of the second spiral stage 202, the top end of the second spiral stage 202 is connected with the bottom end of the third spiral stage 203; the pitch of the first spiral stage 201, the second spiral stage 202 and the third spiral stage 203 increases in sequence, and the spiral angle of the first spiral stage 201, the second spiral stage 202 and the third spiral stage 203 decreases in sequence; the first spiral stage 201, the second spiral stage 202 and the third spiral stage 203 arranged in sequence from bottom to top, due to the different pitch and spiral angle, when the gas passes through the first spiral stage 201, the centrifugal coefficient of the first spiral stage 201 is large, and the gas-liquid two-phase with a density difference of greater than or equal to 500 kg / m3 is quickly separated, so that more than 90% of the liquid is attached to the wall in the initial section, when the gas passes through the second spiral stage 202, the second spiral stage 202 forms a stable rotational flow field (Reynolds number Re is greater than or equal to 5000), and the Bernoulli effect is used to reduce the static pressure (ΔP is greater than or equal to 20 kPa) in the center of the channel, and the gas is absorbed to the center of the shaft, when the gas passes through the third spiral stage 203, the third spiral stage 203 reduces the flow resistance, so that the gas flow rate is increased.

[0027] In the embodiment of the utility model, the inside of exhaust cavity 103 is located at the bottom of spiral guide vane 2 and is arranged with bionic gill rake guide vane 3, the bionic gill rake guide vane 3 is the comb-shaped structure of the inner side of fish gill arch; the bionic gill rake guide vane 3 is the three-dimensional array similar to "rotating comb tooth ring" formed by the equidistant distribution of several groups of inverted triangular guide vanes 301; the left waist of inverted triangular guide vane 301 is vertically arranged on the inner wall of exhaust cavity 103, and the right waist is inclined to the exhaust port by 30 DEG; the root distance of adjacent inverted triangular guide vanes 301 in bionic gill rake guide vane 3 is 0.2mm;

[0028] The 0.2mm spacing of inverted triangular guide vane 301 is slightly larger than the common oil droplet diameter 50-100μm in hydraulic oil, the left waist of inverted triangular guide vane 301 is vertically arranged, and the right waist is inclined to the exhaust port by 30 DEG (forming a gas guide curved surface), the 45 DEG tip of inverted triangular guide vane 301 imitates the fluid cutting effect of gill rake tip, optimizes the gas flow direction, guides the bubble to rise along the curved surface by using the Coanda effect (wall attachment effect), the curved surface design makes the gas flow follow the Coanda effect, closely adheres to the wall to form a spiral rising flow, reduces the turbulence caused by the direct impact of gas on the exhaust port, and the oil droplets cannot overcome the curved surface adhesion force and viscous resistance, gather at the root of inverted triangular guide vane 301, and then return to the inlet cavity 101, avoiding being discharged with the gas, and then cooperating with the spiral guide vane 2 in the exhaust cavity 103, forming a gas-liquid rotational flow separation field, and further improving the separation efficiency.

[0029] Working principle: the embodiment provides a push-pull exhaust type three-way valve, first, in the use of the push-pull exhaust type three-way valve body 1, in the non-exhaust state, the hydraulic structure on the push-pull exhaust type three-way valve body 1 pushes the valve core in it to block the exhaust cavity 103, at this time, the inlet cavity 101 and the outlet cavity 102 are unobstructed, at this time, the oil is normally transported, when the exhaust is needed, the hydraulic structure on the push-pull exhaust type three-way valve body 1 pushes the valve core in it to block the outlet cavity 102, at this time, the exhaust cavity 103 is opened, then the air (small density, floating on the oil) accumulated in the system is discharged through the exhaust cavity 103;

[0030] Secondly, the spiral guide vane 2 makes the exhaust cavity 103 form an Archimedes spiral surface structure, when the exhaust is discharged through the exhaust cavity 103, the centrifugal force principle is used to realize efficient separation of gas and liquid, when the mixed fluid enters the exhaust cavity 103, the liquid with large density is thrown to the channel wall under the action of centrifugal force and returns to the inlet cavity 101 along the spiral path, and the gas is discharged upward from the central axis, compared with the traditional straight cylinder type channel, the structure can not only improve the exhaust speed, but also can prevent the situation that the liquid medium is carried out.

[0031] Finally, the 0.2mm spacing of the inverted triangular guide vane 301 is slightly larger than the common oil droplet diameter 50-100μm in hydraulic oil, the left waist of the inverted triangular guide vane 301 is arranged vertically, and the right waist is inclined to the exhaust port direction by 30° (forming a gas guide curved surface), the 45° tip of the inverted triangular guide vane 301 simulates the fluid cutting effect of the gill rake tip, optimizes the gas flow direction, guides the bubbles to rise along the curved surface by using the coanda effect (wall effect), the curved surface design makes the gas flow follow the coanda effect, closely adheres to the wall to form a spiral rising flow, reduces the turbulence caused by the direct impact of the gas on the exhaust port, the oil droplets gather at the root of the inverted triangular guide vane 301 because they cannot overcome the adhesion force and viscous resistance of the curved surface, and then return to the inlet cavity 101, avoiding being discharged with the gas, and then cooperating with the spiral guide vane 2 in the exhaust cavity 103, a gas-liquid cyclone separation field is formed, and the separation efficiency is further improved.

[0032] The embodiment of the utility model discloses the preferable embodiment, but is not limited to this, the ordinary skill of the art, the spirit of the utility model is appreciated to the above-mentioned embodiment, and different induction and change are made, but as long as not departing from the spirit of the utility model, all are within the protection scope of the utility model.

Claims

1. A slide and pull exhaust tee valve characterized by, The application relates to a push-pull exhaust three-way valve body (1), one end of which is an inlet cavity (101), the other end of which is an outlet cavity (102), and the top end of which is an exhaust cavity (103), wherein a spiral flow guide blade (2) is arranged in the exhaust cavity (103), and the spiral flow guide blade (2) is an Archimedes spiral. A bionic gill rake-shaped flow guide piece (3) is arranged at the bottom of the spiral flow guide blade (2) in the exhaust cavity (103), and the bionic gill rake-shaped flow guide piece (3) is a comb-shaped structure on the inner side of a fish gill arch.

2. The slide-and-pull vented tee valve of claim 1, wherein, The spiral flow guide blade (2) comprises a first spiral stage (201), a second spiral stage (202) and a third spiral stage (203), which are arranged in sequence from bottom to top, and the top end of the first spiral stage (201) is connected with the bottom end of the second spiral stage (202), and the top end of the second spiral stage (202) is connected with the bottom end of the third spiral stage (203).

3. The slide-and-pull vented tee valve of claim 2, wherein, The pitch of the first spiral stage (201), the second spiral stage (202) and the third spiral stage (203) increases in sequence, and the spiral angle of the first spiral stage (201), the second spiral stage (202) and the third spiral stage (203) decreases in sequence.

4. The slide-and-pull vented tee valve of claim 1, wherein, The bionic gill rake-shaped flow guide piece (3) is a three-dimensional array similar to a rotating comb tooth ring which is formed by a plurality of groups of inverted triangular flow guide pieces (301) distributed equidistantly along a circumference.

5. The slide-and-dump exhaust tee valve of claim 4, wherein, The left waist of the inverted triangular flow guide piece (301) is vertically arranged on the inner wall of the exhaust cavity (103), and the right waist is inclined to the exhaust port by 30 degrees.

6. The slide-and-dump exhaust tee valve of claim 4, wherein, The distance between the roots of adjacent inverted triangular flow guide pieces (301) in the bionic gill rake-shaped flow guide piece (3) is 0.2 mm.

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