CN210566440U

CN210566440U - Fluid reversing valve and plant protection equipment

Info

Publication number: CN210566440U
Application number: CN201921089428.2U
Authority: CN
Inventors: 温海军
Original assignee: Guangzhou Xaircraft Technology Co Ltd
Current assignee: Guangzhou Xaircraft Technology Co Ltd
Priority date: 2019-07-11
Filing date: 2019-07-11
Publication date: 2020-05-19
Anticipated expiration: 2029-07-11

Abstract

The utility model discloses a fluid switching-over valve and plant protection equipment, fluid switching-over valve (100) include: the valve seat (1) is provided with a valve seat cavity and a plurality of valve ports communicated with the valve seat cavity; the valve core (2) is arranged in the valve seat cavity, and a plurality of valve core reversing holes (23) for fluid to pass through in a reversing way are formed in the peripheral wall of the valve core (2); many connecting pipes (3), one-to-one ground cartridge is a plurality of in the valve port, connecting pipe (3) are including being located the connecting pipe outer end outside the valve base chamber and being located the valve base intracavity just can communicate the connecting pipe inner of case switching-over hole (23), the connecting pipe inner is formed with and is the sealed laminating of flaring form the lip sealing (31) of perisporium is followed in the hole of case switching-over hole (23). The utility model discloses an among the fluid switching-over valve, the connecting leakproofness between connecting pipe and the case hoop hole is good, can effectively avoid hoarding up of fluid impurity to block up to improve reliability and increase of service life.

Description

Fluid reversing valve and plant protection equipment

Technical Field

The utility model relates to a plant protection operation technical field specifically, relates to a fluid switching-over valve and plant protection equipment.

Background

Three-way valves are often used as control components in fluid delivery systems because of their functions of shut-off, regulation, diversion, prevention of reverse flow, pressure stabilization, diversion, or overflow. For example, in fluid delivery systems, three-way valves may be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, slurries, oils, liquid metals, and radioactive media.

However, when a fluid with a large amount of impurities and a high corrosiveness needs to be conveyed, the three-way valve in the prior art is easy to accumulate the impurities in the valve cavity, and the three-way valve is blocked along with the gradual increase of the service life, so that the normal operation and the service life of the three-way valve are affected.

SUMMERY OF THE UTILITY MODEL

To prior art's above-mentioned defect or not enough, the utility model provides a fluid switching-over valve and plant protection equipment, easily dismouting just can avoid hoarding up the jam of fluid impurity to improve reliability and increase of service life.

To achieve the above object, the present invention provides a fluid reversing valve, which comprises:

the valve seat is provided with a valve seat cavity and a plurality of valve ports communicated with the valve seat cavity;

the valve core is arranged in the valve seat cavity, and a plurality of valve core reversing holes for fluid to pass through in a reversing way are formed in the peripheral wall of the valve core;

many connecting pipes, one-to-one ground cartridge is to a plurality of in the valve port, the connecting pipe is including being located the outer connecting pipe outer end of valve base chamber and being located the valve base intracavity just can communicate the connecting pipe inner in case switching-over hole, the connecting pipe inner is formed with and is the sealed laminating of flaring form the lip sealing part of hole edge perisporium in case switching-over hole.

Optionally, the valve core is spherical, the valve core reversing hole is a circular cross-section hole, and the lip sealing portion is formed as an annular lip extending out from the circumferential edge of the inner end of the connecting pipe in a flaring shape.

Optionally, the molded line of the annular lip-shaped lip sealing portion is an arc line, and the arc radius is the same as the sphere radius of the spherical valve core.

Optionally, the valve seat includes a valve seat connecting portion provided with the valve port, the connecting pipe is detachably inserted into the valve port, the fluid reversing valve further includes a connecting ring cover for transitionally connecting the valve seat connecting portion and the connecting pipe, and two axial ends of the connecting ring cover are respectively sleeved on the valve seat connecting portion and the connecting pipe.

Optionally, a radially protruding connecting pipe limiting portion is formed on the outer peripheral wall of the connecting pipe, and the connecting pipe limiting portion is located in the valve seat cavity and is in limiting abutment with the opening of the valve port along the peripheral wall.

Optionally, a circumferential annular groove and a circumferential annular sealing ring installed in the circumferential annular groove for sealing a fit clearance between the valve port and the connecting pipe are arranged on the outer circumferential wall of the connecting pipe.

Optionally, the connecting tube is a PP material tube.

Optionally, the valve port includes an axial inlet valve port disposed on a cavity bottom wall of the valve seat cavity, and a first lateral outlet valve port and a second lateral outlet valve port disposed on a cavity peripheral wall of the valve seat cavity and distributed along a radial direction in an opposite manner, the connecting pipe includes an axial connecting pipe inserted into the axial inlet valve port, a first lateral connecting pipe inserted into the first lateral outlet valve port, and a second lateral connecting pipe inserted into the second lateral outlet valve port, the valve element reversing hole includes a valve element axial inlet hole and a valve element lateral outlet hole that are vertically communicated with each other, the valve element axial inlet hole is communicated with the axial connecting pipe, and the valve element lateral outlet hole is selectively communicated with the first lateral connecting pipe or the second lateral connecting pipe in a butt joint manner.

Optionally, the fluid reversing valve further includes a top cover installation opening disposed on a top wall of the cavity of the valve seat cavity, a valve seat top cover installed in the top cover installation opening, and a reversing control knob disposed above the valve seat top cover, the valve core includes a valve core body portion provided with the valve core reversing hole and a valve rod portion axially extending from a top end of the valve core body portion, the valve seat top cover is provided with a top cover through hole, and the valve rod portion upwardly penetrates through the top cover through hole and is connected with the reversing control knob.

Furthermore, the utility model also provides an adopt the plant protection equipment of above-mentioned fluid switching-over valve.

Optionally, the plant protection equipment is an unmanned aerial vehicle or a drug filling machine.

The utility model discloses in, be the lip sealing that expands the mouth form through forming in connecting pipe inner to utilize the hole edge perisporium in the sealed laminating case switching-over hole of this lip sealing, under the prerequisite in order to realize the fluid switching-over of guaranteeing that the connecting pipe can communicate with case hoop hole, effectively improve the connection leakproofness, thereby effectively prevent fluid leakage to the disk seat intracavity, in order to avoid depositing up of fluid impurity to block up, and then improve the reliability of fluid switching-over valve and prolong its life.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a perspective view of a fluid diverter valve according to an embodiment of the present invention;

FIG. 2 is a side view of the fluid diverter valve of FIG. 1;

3 FIG. 33 3 is 3 a 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 the 3 fluid 3 diverter 3 valve 3 of 3 FIG. 32 3; 3

FIG. 4 is a perspective view of a connecting tube of the fluid diverter valve of FIG. 1;

FIG. 5 is a perspective view of a valve seat of the fluid diverter valve of FIG. 1;

FIG. 6 is a perspective view of a valve spool of the fluid diverter valve of FIG. 3;

FIG. 7 is a perspective view of a valve seat top cover of the fluid diverter valve of FIG. 3;

FIG. 8 is a perspective view of a reversing control knob of the fluid reversing valve of FIG. 1;

fig. 9 is a perspective view of a connecting ring cap of the fluid diverter valve of fig. 1.

Description of reference numerals:

100 fluid reversing valve

1 valve seat and 2 valve core

3 connecting pipe 4 valve seat top cover

5 reversing control knob 6 connecting ring cover

11 first lateral outflow valve port 12 second lateral outflow valve port

13 axial inflow valve port 14 top cover mounting port

21 valve core body part 22 valve rod part

Lip sealing part of 23 valve core reversing hole 31

32 connecting pipe limiting part 33 circumferential annular groove

34 axial connecting pipe 35 first transverse connecting pipe

36 second horizontal connecting pipe 41 top cover through hole

51 knob connecting hole

231 axial valve core inflow hole 232 transverse valve core outflow hole

Detailed Description

The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description herein is only intended to illustrate and explain embodiments of the present invention, and is not intended to limit embodiments of the present invention.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the embodiments of the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, top, bottom" and "upper" are generally used with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, vertical or gravitational direction.

The invention will be described in detail below with reference to the accompanying drawings in conjunction with exemplary embodiments.

As shown in fig. 1 to 9, an exemplary embodiment of the present invention provides a fluid direction valve 100, and the fluid direction valve 100 includes a valve seat 1, a valve core 2, and a plurality of connection pipes 3. The valve seat 1 is provided with a valve seat cavity and a plurality of valve ports communicated with the valve seat cavity, the valve core 2 is arranged in the valve seat cavity, the peripheral wall of the valve core 2 is provided with a plurality of valve core reversing holes 23 for the fluid to pass through in a reversing manner, and the connecting pipes 3 are inserted into the valve ports in a one-to-one correspondence manner. Specifically, the connection pipe 3 includes an outer end of the connection pipe located outside the valve seat cavity and an inner end of the connection pipe located inside the valve seat cavity and capable of communicating with the valve element reversing hole 23, and a flared lip sealing portion 31 is formed at the inner end of the connection pipe to seal and attach to the hole edge peripheral wall of the valve element reversing hole 23.

It should be noted that the flaring shape of the lip sealing portion 31 is relative to the inner end of the connection pipe, that is, the section caliber of any cross section of the lip sealing portion 31 is larger than the pipe diameter of the inner end of the connection pipe, except for the joint of the lip sealing portion 31 and the inner end of the connection pipe. Therefore, the cross-sectional caliber of the lip sealing portion 31 can be set to have different changing laws such as increasing in the axial direction, decreasing in the axial direction, or increasing in the axial direction first and then decreasing in the axial direction. In other words, in the exemplary embodiment of the present invention, too much restriction is not made on the change rule of the section caliber of the lip sealing portion 31 as long as it is ensured that the section caliber of any cross section of the lip sealing portion 31 is greater than the pipe diameter of the inner end of the connection pipe to form a flared shape relative to the inner end of the connection pipe, and the effect of the hole of the seal-fitting valve element reversing hole 23 along the peripheral wall is obtained.

When the fluid switching valve 100 is applied to a fluid delivery system, fluid can flow into the spool switching hole 23 which is in butt communication through the connection pipe 3, and then flow out in a switching manner through the other spool switching hole 23 and the other connection pipe 3 which is in butt communication. In this process, because the lip sealing portion 31 is always in sealing fit with the hole edge peripheral wall of the valve core reversing hole 23, on the premise that the connecting pipe 3 can be communicated with the valve core annular hole 23 to realize fluid reversing, the connection sealing performance is effectively improved, so that fluid is effectively prevented from leaking into the valve seat cavity, the accumulation and blockage of fluid impurities are avoided, the reliability of the fluid reversing valve 100 is further improved, and the service life of the fluid reversing valve is prolonged.

In some embodiments, the valve body 2 may be provided in a spherical shape, the valve body direction changing hole 23 may be provided as a circular cross-section hole formed in the outer peripheral wall of the valve body 2, and the lip sealing portion 31 may be formed as an annular lip extending in a flared shape from the peripheral edge of the inner end of the connection pipe. Of course, the valve body 2 may be formed in other different shapes, and the sealing property may be ensured to prevent the fluid leakage as long as the shape of the lip seal portion 31 is always adapted to seal the hole edge peripheral wall of the valve body direction changing hole 23.

In some embodiments, the line of the annular lip-shaped lip seal portion 31 may be preferably set to be a circular arc line and the circular arc radius thereof may be set to be the same as the sphere radius of the spherical valve element 2. The line of the lip seal 31 is an arc line extending in the extending direction of the connection pipe 3, and the area where the arc line is scanned is formed as the lip seal 31 after the arc line is rotated 360 ° around the central axis of the connection pipe 3. In other words, the inner peripheral wall of the lip seal portion 31 is formed as an arc wall, and when the connection pipe 3 is in butt communication with the valve body direction changing hole 23, the arc wall of the lip seal portion 31 can be completely sealed against the hole edge peripheral wall of the valve body direction changing hole 23, and the preferable structure of the present embodiment can further improve the connection sealing property as compared with the structure in which the connection pipe is partially sealed.

In some special cases, if fluid impurities are still inadvertently accumulated in the valve seat cavity, a backup scheme is required to ensure that the fluid diverter valve 100 can continue to operate normally.

Therefore, in some embodiments, the valve seat 1 comprises a valve seat connecting portion having a valve port, the connecting pipe 3 is detachably inserted into the valve port, and the fluid reversing valve further comprises a connecting ring cover 6 for transitionally connecting the valve seat connecting portion and the connecting pipe 3, and two axial ends of the connecting ring cover 6 are respectively sleeved on the valve seat connecting portion and the connecting pipe 3. It can be seen that the fluid direction valve 100 can be formed in an easily detachable structure by providing the connection pipe 3 and the connection ring cover 6 as detachable members. When impurities block the valve seat cavity, the fluid diverter valve 100 can be quickly disassembled to facilitate cleaning and conductance of the valve seat cavity, and can continue to be used normally after being reassembled, thereby reducing maintenance efficiency and greatly prolonging the service life of the fluid diverter valve.

Since the connecting pipe 3 is usually configured as a detachable piece, in order to ensure the assembly stability, in some embodiments, a radially protruding connecting pipe limiting portion 32 may be disposed on the outer peripheral wall of the connecting pipe 3, and the connecting pipe limiting portion 32 is located in the valve seat cavity and is in limiting abutment with the port of the valve port along the peripheral wall, so that the connecting pipe 3 can be effectively prevented from falling off from the valve port.

In addition, in order to better prevent the fluid from leaking from the fluid reversing valve 100, in some embodiments, a circumferential annular groove 33 and a circumferential annular sealing ring installed in the circumferential annular groove 33 may be provided on the outer circumferential wall of the connecting pipe 3, and the circumferential annular sealing ring is used to seal the fitting gap between the valve port and the connecting pipe 3, thereby achieving a waterproof sealing effect.

In some embodiments, the connection pipe 3 is preferably provided as a PP material pipe so that the connection pipe 3 has strong acid resistance and alkali resistance and can more closely seal the hole fitting the spool change-over hole 23 along the peripheral wall. In addition, the PP material pipe is easy to obtain, and the production cost and the maintenance and replacement cost of the fluid reversing valve 100 can be effectively reduced.

The fluid diverter valve 100 in the illustrated embodiment is a three-way valve, and the ports of the three-way valve include an axial inlet port 13 disposed on the bottom wall of the housing of the valve seat cavity, and a first lateral outlet port 11 and a second lateral outlet port 12 disposed on the peripheral wall of the housing of the valve seat cavity and distributed oppositely in the radial direction. The connection pipe 3 includes an axial connection pipe 34 inserted into the axial inlet port 13, a first transverse connection pipe 35 inserted into the first transverse outlet port 11, and a second transverse connection pipe 36 inserted into the second transverse outlet port 12. The spool change hole 23 includes a spool axial inflow hole 231 and a spool lateral outflow hole 232 that communicate with each other perpendicularly. The axial inlet 231 and the axial connecting pipe 34 are in butt communication, and the transverse outlet 232 is in butt communication with the first transverse connecting pipe 35 or the second transverse connecting pipe 36 selectively.

When the spool lateral outflow hole 232 is in butt communication with the first lateral connection pipe 35, the fluid passes through the three-way valve in the following order of the axial connection pipe 34, the spool axial inflow hole 231, the spool lateral outflow hole 232, and the first lateral connection pipe 35. When the spool lateral outflow hole 232 is switched to be in butt communication with the second lateral connection pipe 36, the path of the fluid passing through the three-way valve is sequentially through the axial connection pipe 34, the spool axial inflow hole 231, the spool lateral outflow hole 232, and the second lateral connection pipe 36.

It should be noted that the inlet valve port, the outlet valve port, the inlet hole, the outlet hole, etc. in the three-way valve are not limited to actual functions in terms of names, but are merely used for illustrative purposes for easy understanding. In other words, the flow direction of the three-way valve is not limited to the illustrated embodiment, and the three-way valve may be configured to ensure "one inlet and two outlets".

In some embodiments, the fluid diverter valve 100 may further include a top cap mounting port 14 disposed in the top wall of the cavity of the valve seat cavity, a valve seat top cap 4 mounted in the top cap mounting port 14, and a diverter control knob 5 disposed above the valve seat top cap 4. The valve body 2 includes a valve body portion 21 provided with a valve body direction changing hole 23 and a stem portion 22 axially protruding from a tip end of the valve body portion 21. Wherein, the valve seat top cover 4 is provided with a top cover through hole 41, and the valve rod part 22 upwards passes through the top cover through hole 41 and is connected with the reversing control knob 5. Specifically, a knob connecting hole 51 may be provided at the bottom of the direction-changing control knob 5, so that the top of the valve stem 22, which penetrates through the top cover through hole 41, can be fixedly inserted into the knob connecting hole 51, thereby fixedly connecting the valve stem 22 and the direction-changing control knob 5.

When the fluid reversing valve 100 is used, the reversing control knob 5 is rotated to link the valve rod portion 22 to rotate the valve core body portion 21, so that the valve core transverse outflow hole 232 is switched and communicated with the first transverse connecting pipe 35 or the second transverse connecting pipe 36, thereby realizing fluid reversing.

In addition, another exemplary embodiment of the present invention further provides a plant protection device using the above fluid reversing valve 100, for example, the plant protection device may be an unmanned aerial vehicle or a drug filling machine. It is apparent that the plant protection apparatus has all the above advantages of the fluid diverter valve 100, and the description thereof is not repeated herein.

The above describes in detail optional implementation manners of embodiments of the present invention with reference to the accompanying drawings, however, the embodiments of the present invention are not limited to the details in the above implementation manners, and in the technical concept scope of the embodiments of the present invention, it is possible to perform various simple modifications on the technical solutions of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

It should be noted that, in the above-mentioned embodiments, the various technical features described in the above-mentioned embodiments can be combined in any suitable way without contradiction, and in order to avoid unnecessary repetition, the embodiments of the present invention do not separately describe various possible combinations.

In addition, various different implementation manners of the embodiments of the present invention can be combined arbitrarily, and as long as it does not violate the idea of the embodiments of the present invention, it should be considered as the disclosure of the embodiments of the present invention.

Claims

1. A fluid diverter valve, characterized in that the fluid diverter valve (100) comprises:

the valve seat (1) is provided with a valve seat cavity and a plurality of valve ports communicated with the valve seat cavity;

the valve core (2) is arranged in the valve seat cavity, and a plurality of valve core reversing holes (23) for fluid to pass through in a reversing way are formed in the peripheral wall of the valve core (2);

many connecting pipes (3), one-to-one ground cartridge is a plurality of in the valve port, connecting pipe (3) are including being located the connecting pipe outer end outside the valve base chamber and being located the valve base intracavity just can communicate the connecting pipe inner of case switching-over hole (23), the connecting pipe inner is formed with and is the sealed laminating of flaring form the lip sealing (31) of perisporium is followed in the hole of case switching-over hole (23).

2. The fluid diverter valve according to claim 1, wherein the spool (2) is spherical and the spool-diverting hole (23) is a circular-section hole, and the lip seal portion (31) is formed as an annular lip flaring out from the peripheral edge of the inner end of the connecting pipe.

3. A fluid diverter valve according to claim 2, characterized in that the profile of the annular lip-shaped lip seal (31) is a circular arc and the radius of the circular arc is the same as the radius of the sphere of the spherical valve spool (2).

4. A fluid diverter valve according to claim 1, characterized in that the valve seat (1) comprises a valve seat connecting portion provided with the valve port, the connecting pipe (3) is detachably inserted into the valve port, the fluid diverter valve further comprises a connecting ring cover (6) for transitionally connecting the valve seat connecting portion and the connecting pipe (3), and the two axial ends of the connecting ring cover (6) are respectively sleeved on the valve seat connecting portion and the connecting pipe (3).

5. A fluid diverter valve according to claim 1, characterized in that the outer peripheral wall of the connecting tube (3) is formed with a radially protruding connecting tube stopper (32), and the connecting tube stopper (32) is located in the valve seat cavity and is in stopper abutment with the port of the valve port along the peripheral wall.

6. A fluid diverter valve according to claim 1, characterized in that the outer peripheral wall of the connecting tube (3) is provided with a circumferential annular groove (33) and a circumferential annular sealing ring mounted in the circumferential annular groove (33) for sealing a fitting clearance between the valve port and the connecting tube (3).

7. A fluid diverter valve according to claim 1, characterized in that the connecting tube (3) is a PP-material tube.

8. The fluid diverter valve according to any one of claims 1 to 7, wherein the valve ports comprise an axial inlet valve port (13) disposed on the bottom wall of the valve seat cavity and a first transverse outlet valve port (11) and a second transverse outlet valve port (12) disposed on the peripheral wall of the valve seat cavity and distributed oppositely in the radial direction, the connecting pipe (3) comprises an axial connecting pipe (34) inserted into the axial inlet valve port (13), a first transverse connecting pipe (35) inserted into the first transverse outlet valve port (11) and a second transverse connecting pipe (36) inserted into the second transverse outlet valve port (12), the diverter spool bore (23) comprises a spool axial inlet hole (231) and a spool transverse outlet hole (232) which are vertically communicated with each other, and the spool axial inlet hole (231) and the axial connecting pipe (34) are communicated with each other, the valve core transverse outflow hole (232) is selectively in butt communication with the first transverse connecting pipe (35) or the second transverse connecting pipe (36).

9. The fluid diverter valve according to claim 8, wherein the fluid diverter valve (100) further comprises a top cover mounting opening (14) disposed at a top wall of the cavity of the valve seat cavity, a valve seat top cover (4) mounted in the top cover mounting opening (14), and a diverter control knob (5) disposed above the valve seat top cover (4), the valve core (2) comprises a valve core body portion (21) provided with the valve core diverter hole (23) and a valve rod portion (22) axially protruding from a top end of the valve core body portion (21), the valve seat top cover (4) is provided with a top cover through hole (41), and the valve rod portion (22) upwardly passes through the top cover through hole (41) and is connected with the diverter control knob (5).

10. Plant protection equipment, characterized in that it comprises a fluid diverter valve (100) according to any one of claims 1 to 9.