CN215215771U

CN215215771U - Waterway switching device

Info

Publication number: CN215215771U
Application number: CN202121634533.7U
Authority: CN
Inventors: 李文明; 何婷婷; 曾健
Original assignee: Shenzhen Hengzhiyun Technology Co Ltd
Current assignee: Shenzhen Hengzhiyun Technology Co Ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2021-12-17
Anticipated expiration: 2031-07-16

Abstract

The utility model relates to a water route auto-change over device, include: the converter valve comprises a converter valve body, a piston piece, a first switch mechanism and a second switch mechanism; a strip-shaped cavity is arranged in the converter valve body; along the axial direction of the strip-shaped cavity, the converter valve body is provided with a first liquid through port, a second liquid through port, a third liquid through port and a fourth liquid through port which are sequentially communicated with the strip-shaped cavity; the piston piece is movably accommodated in the strip-shaped cavity; the piston piece plays a role in separating in the strip-shaped cavity along the axial direction of the strip-shaped cavity; the piston piece can block one of the second liquid through hole and the third liquid through axial movement along the strip-shaped cavity; the first switch mechanism is connected with the converter valve body; the first switch mechanism is used for controlling the water flow injection of one of the first liquid through port and the second liquid through port; the second switch mechanism is connected with the converter valve body; the second switch mechanism is used for controlling the water flow injection of one of the third liquid passing port and the fourth liquid passing port. Thereby control two sets of water routes to water storage device's output, avoid filling water simultaneously to different cavities.

Description

Waterway switching device

Technical Field

The utility model relates to a water flow control structure especially relates to a water route auto-change over device.

Background

In the part needs waterway structure, there is a box body for holding water, and different chambers which are adjacent and whose space can be changed are arranged in the box body, a movable piston plate or a baffle plate is arranged between the chambers, when the piston plate or the baffle plate moves, the space of two adjacent chambers changes, and the space expansion of one chamber can cause the reduction of the space of the other chamber.

When the box body with the variable chambers is used, water is generally filled into only one chamber at the same time, water stored in the water-filled chamber generates water pressure on the piston plate and pushes the piston plate, so that the space of the water-filled chamber is increased, and the space of other chambers is reduced. Because different cavities correspond different water injection water ways, if water is injected into a plurality of cavities simultaneously accidentally, the piston plate cannot move to cause the overflow of the box body, and the existing water injection mechanism of the box body cannot guarantee that water is injected into only one cavity simultaneously, so that the overflow risk exists.

SUMMERY OF THE UTILITY MODEL

In view of this, it is necessary to provide a water path switching device for solving the problem that the existing tank water injection mechanism cannot ensure that water is injected into only one of the chambers at the same time.

A waterway switching device for switching water injection of different chambers, the waterway switching device comprising:

the converter valve body is internally provided with a strip-shaped cavity; along the axial direction of the strip-shaped cavity, the converter valve body is provided with a first liquid through port, a second liquid through port, a third liquid through port and a fourth liquid through port which are sequentially communicated with the strip-shaped cavity;

a piston member received in the bar-shaped cavity; the piston piece plays a role of separation along the axial direction of the strip-shaped cavity; the piston piece can generate a blocking effect on one of the second liquid through port and the third liquid through port;

the first switching mechanism is connected with the converter valve body; the first switch mechanism is used for controlling the water flow injection of one of the first liquid through port and the second liquid through port; and

the second switch mechanism is connected with the converter valve body; the second switch mechanism is used for controlling the water flow injection of one of the third liquid passing port and the fourth liquid passing port.

When water needs to be injected into one of the chambers, water flows into one of the chambers from the first switch mechanism, the first liquid through port and the second liquid through port; because the piston piece blocks the third liquid through hole, the flow between the third liquid through hole and the fourth liquid through hole is limited, and the water flow output by the second switch mechanism is prevented from entering the other cavity. When water needs to be injected into the other cavity, water flows enter the other cavity from the second switch mechanism, the third liquid through port and the fourth liquid through port; because the piston piece blocks the second liquid through port, the flow between the first liquid through port and the second liquid through port is limited, and the water flow output from the first switch mechanism is prevented from entering one of the cavities. Through the removal of piston spare in the bar chamber to control two sets of water routes to water storage device's output, avoid the cavity water injection simultaneously to the difference, prevent that water storage device from appearing overflowing.

In one embodiment, the second liquid through port is used for injecting water into one chamber; the third liquid through hole is used for injecting water into the other cavity; in the axial direction of the strip-shaped cavity, the piston piece is movable between the first liquid through port and the fourth liquid through port; therefore, the conduction mode of the waterway switching device can be automatically switched by utilizing the entering water flow.

In one embodiment, the second liquid through ports and the third liquid through ports are arranged in a staggered manner along the circumferential direction of the strip-shaped cavity; thereby being convenient for the butt joint of the second liquid through opening or the third liquid through opening and the pipeline.

In one embodiment, the first switch mechanism comprises a first main valve body, a first on-off component connected with the first main valve body, a first base plate arranged on one side of the first on-off component, and a first operating plate rotatably connected with the first base plate; an output port of the first main valve body is communicated to the first liquid through port, the first main valve body is provided with a first main channel, and the first main valve body is also provided with a first pilot port communicated with the first main channel; the first main valve body is also provided with a first pressurizing cylinder, and the first open-close component is connected between the first pilot port and the first pressurizing cylinder; the first operation plate is used for switching the first pilot port and the first pressurizing cylinder between communication and isolation; a water flow can be injected into the first liquid through port.

In one embodiment, the first switch mechanism further includes a first orientation member connected between the first base plate and the first operation plate, and the first orientation member is configured to maintain the first operation plate at an angle after a toggle operation with respect to the first base plate; thereby enabling the first operation plate to keep the angle after the dial operation relative to the first base plate.

In one embodiment, the converter valve body is provided with a first drain port which is communicated with the fourth through liquid port; the first switch mechanism further comprises a first pressure relief valve communicated with the first pressure relief port, and a control end of the first pressure relief valve is located in the movable range of the first operating plate; therefore, the piston piece can be pushed to the fourth liquid through port conveniently by the water flowing in from the first liquid through port.

In one embodiment, the converter valve body is provided with a second drain port which is communicated with the first liquid through port; the first switch mechanism further comprises a second pressure relief valve communicated with the second pressure relief port; the second pressure relief valve is used for discharging accumulated water between the first liquid through port and the second liquid through port; therefore, the piston piece can be conveniently pushed to the fourth liquid outlet by the water flow flowing in from the fourth liquid outlet.

In one embodiment, the first closing and opening assembly comprises a first conduit communicated with the first pilot port, a second conduit communicated with the input port of the first pressurizing cylinder and a first pipe sleeve; the first guide pipe and the second guide pipe are arranged side by side, and ports of the first guide pipe and the second guide pipe are contained in the first pipe sleeve; the first operation plate can abut against the first socket; the first opening and closing assembly further comprises a third guide pipe communicated with an output port of the first pressurizing cylinder, a fourth guide pipe communicated with a water outlet and a second pipe sleeve; the third guide pipe and the fourth guide pipe are arranged side by side, and ports of the third guide pipe and the fourth guide pipe are contained in the second pipe sleeve; the first operation plate can also abut against the second pipe sleeve; therefore, the converter valve body can be switched between conduction and blocking.

In one embodiment, the second switch mechanism comprises a second main valve body, a second closing assembly connected with the second main valve body, a second base plate arranged on one side of the second closing assembly, and a second operating plate rotatably connected with the second base plate; the output port of the second main valve body is communicated to the fourth liquid outlet, the second main valve body is provided with a second main channel, and the second main valve body is also provided with a second pilot port communicated with the second main channel; the second main valve body is also provided with a second pressurizing cylinder, and a second closing component is connected between the second pilot port and the second pressurizing cylinder; the second operation plate is used for switching the communication and isolation between the second pilot port and the second pressurizing cylinder; water flow can be injected into the fourth liquid inlet.

In one embodiment, the second switch mechanism further comprises a second orientation member connected between the second base plate and the second operation plate, the second orientation member being configured to maintain the second operation plate at a post-dial-operation angle with respect to the second base plate; thereby enabling the second operation plate to keep the angle after the dial operation relative to the second base plate.

Drawings

Fig. 1 is a schematic structural view of a waterway switching device according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the converter valve body and piston member of FIG. 1;

FIG. 3 is a schematic view of the first switching mechanism of FIG. 1 in a state in which it is blocking the first pilot port from the first pressurizing cylinder;

FIG. 4 is a schematic view of the first switching mechanism of FIG. 1 in a state in which communication between the first pilot port and the first pressurized cylinder is achieved;

FIG. 5 is a schematic view of the first main valve body of FIG. 1;

fig. 6 is a schematic structural view of the second switching mechanism in fig. 1.

The corresponding relation between each reference number and each meaning in the drawings is as follows:

100. a waterway switching device; 20. a converter valve body; 21. a strip-shaped cavity; 22. a first liquid through port; 23. a second liquid passage; 24. a third liquid outlet; 25. a fourth fluid port; 26. a first bleed port; 27. a second bleed port; 30. a piston member; 40. a first switching mechanism; 41. a first main valve body; 411. a first main channel; 412. a first pressurizing cylinder; 413. a first pilot port; 414. a first movable member; 42. a first closing assembly; 421. a first conduit; 422. a second conduit; 423. a first pipe sleeve; 424. a third conduit; 425. a fourth conduit; 426. a second pipe sleeve; 43. a first substrate; 44. a first operation panel; 45. a first orientation member; 46. a first pressure relief valve; 47. a second pressure relief valve; 50. a second switch mechanism; 51. a second main valve body; 511. a second main channel; 512. a second pressurizing cylinder; 513. a second pilot port; 514. a second movable member; 52. a second closing and opening component; 53. a second substrate; 54. a second operation panel; 55. a second orienting member; 800. a water storage device; 801. a chamber; 802. a first position detecting member; 803. a piston plate; 804. a second position detecting member.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 6, a waterway switching device 100 according to an embodiment of the present invention is used for switching water injection of different chambers 801. The waterway switching device 100 includes: a converter valve body 20, a piston member 30, a first switching mechanism 40, and a second switching mechanism 50; a strip-shaped cavity 21 is arranged in the converter valve body 20; along the axial direction of the strip-shaped cavity 21, the converter valve body 20 is provided with a first liquid through port 22, a second liquid through port 23, a third liquid through port 24 and a fourth liquid through port 25 which are sequentially communicated with the strip-shaped cavity 21; the piston element 30 is movably housed in the bar-shaped cavity 21; the piston member 30 is partitioned in the bar-shaped chamber 21 in the axial direction of the bar-shaped chamber 21; the piston member 30 is capable of blocking one of the second liquid passage port 23 and the third liquid passage port 24 by moving in the axial direction of the bar-shaped cavity 21; the first switching mechanism 40 is connected to the converter valve body 20; the first switch mechanism 40 is used for controlling the water flow injection of one of the first liquid through port 22 and the second liquid through port 23; the second switching mechanism 50 is connected to the converter valve body 20; the second switching mechanism 50 is used for controlling the water flow injection of one of the third through-hole 24 and the fourth through-hole 25.

When water needs to be injected into one of the chambers 801, water flows into one of the chambers 801 from the first switch mechanism 40, the first liquid through port 22 and the second liquid through port 23; since the piston member 30 blocks the third liquid passing port 24, the flow between the third liquid passing port 24 and the fourth liquid passing port 25 is restricted, and the water flow outputted from the second switching mechanism 50 is prevented from entering the other chamber 801. When water needs to be injected into the other cavity 801, water flows into the other cavity 801 from the second switch mechanism 50, the third through liquid port 24 and the fourth through liquid port 25; since the piston member 30 blocks the second liquid passage port 23, the flow between the first liquid passage port 22 and the second liquid passage port 23 is restricted, and the flow of water output from the first switching mechanism 40 is prevented from entering one of the chambers 801. Through the movement of the piston member 30 in the bar-shaped cavity 21, the output of the water storage device 800 is controlled by two water paths, so that the simultaneous water injection of different cavities 801 is avoided, and the overflow of the water storage device 800 is prevented.

Referring to fig. 2, in one embodiment, the second liquid through port 23 is used for filling water into one of the chambers 801; the third liquid through port 24 is used for injecting water into the other cavity 801; in the axial direction of the bar-shaped cavity 21, the piston member 30 is movable between the first through-liquid port 22 and the fourth through-liquid port 25.

When water enters the bar-shaped cavity 21 from the first fluid passage port 22 or the fourth fluid passage port 25, the water can act on one end surface of the piston member 30, and can push the piston member 30 to move along the bar-shaped cavity 21, so that the conduction mode of the waterway switching device 100 can be automatically switched by the entering water. Specifically, when water enters from the first fluid passage port 22 and pushes the piston member 30 to move toward the fourth fluid passage port 25, the piston member 30 blocks the third fluid passage port 24, and water can flow out of one of the chambers 801 from the second fluid passage port 23; when water enters from the fourth liquid passage 25, the piston member 30 blocks the second liquid passage 23, and water can flow out from the third liquid passage 24 to the other chamber 801.

Referring to fig. 2, in one embodiment, the second liquid passing ports 23 and the third liquid passing ports 24 are arranged in a staggered manner along the circumferential direction of the bar-shaped cavity 21. Therefore, the second liquid through port 23 and the third liquid through port 24 can be prevented from being arranged side by side, the space between the second liquid through port 23 and the third liquid through port 24 is enlarged, and the second liquid through port 23 or the third liquid through port 24 can be conveniently butted with a pipeline.

Referring to fig. 3 and 5, in one embodiment, the first switch mechanism 40 includes a first main valve body 41, a first closing/opening assembly 42 connected to the first main valve body 41, a first base plate 43 disposed on one side of the first closing/opening assembly 42, and a first operating plate 44 rotatably connected to the first base plate 43; an output port of the first main valve body 41 is communicated to the first liquid through port 22, the first main valve body 41 is provided with a first main passage 411, and the first main valve body 41 is further provided with a first pilot port 413 communicated with the first main passage 411; the first main valve body 41 further has a first pressurizing cylinder 412, and a first open/close component 42 is connected between the first pilot port 413 and the first pressurizing cylinder 412; the first operation plate 44 is rotated to abut against different portions of the first closing/opening unit 42, thereby switching the first pilot port 413 and the first pressurizing cylinder 412 between communication and isolation.

By rotating the first operation plate 44, when the first operation plate 44 is at different angles, the communication state or the isolation state of the first opening/closing member 42 can be corresponded. Before the first pilot port 413 is communicated with the first pressurizing cylinder 412, the first main passage 411 is limited by the first movable element 414 and is blocked, and when the first pilot port 413 is communicated with the first pressurizing cylinder 412, water flowing out of the first pilot port 413 enters the first pressurizing cylinder 412 and pushes the first movable element 414 by using water pressure, so that the first main passage 411 is communicated, the water flows to the first liquid through port 22 along the first main passage 411, and water can be injected into the first liquid through port 22.

Referring to fig. 3 and 4, in one embodiment, the first switch mechanism 40 further includes a first direction element 45, the first direction element 45 is connected between the first base plate 43 and the first operating plate 44, and the first direction element 45 is used for keeping the first operating plate 44 at an angle after the toggling operation with respect to the first base plate 43. In the present embodiment, the first direction-changing member 45 is a compression spring, and one end of the first direction-changing member 45 abuts against the first base plate 43 and the other end abuts against the vicinity of the rotational axis of the first operation plate 44, so that the first direction-changing member 45 is in a compressed state, and when the first operation plate 44 is deflected, the deformation direction of the first direction-changing member 45 changes, and the first operation plate 44 is held at the post-rotation angle.

Referring to fig. 1 and 2, in one embodiment, the converter valve body 20 is provided with a first bleed port 26, and the first bleed port 26 is communicated with the fourth vent port 25; the first switching mechanism 40 further includes a first relief valve 46 communicating with the first relief port 26, and a control end of the first relief valve 46 is within a movable range of the first operation plate 44.

When water flow needs to be injected into the first liquid through port 22, by turning the first operation plate 44, the first operation plate 44 enables the first main channel 411 to be communicated through the first closing and opening assembly 42, so as to inject water flow into the first liquid through port 22; after the first operation plate 44 is rotated, the first operation plate 44 abuts against the control end of the first relief valve 46, and accumulated water between the fourth fluid passage 25 and the third fluid passage 24 is discharged from the first relief port 26 and the first relief valve 46 in sequence, so that the piston member 30 is pushed toward the fourth fluid passage 25 by the water flowing from the first fluid passage 22. Specifically, when the first operation plate 44 abuts against the control end of the first relief valve 46, the inside of the first relief valve 46 is in a conducting state, and accumulated water is circulated from the first drain port 26 to the drain port.

Referring to fig. 1 to 3, in one embodiment, the converter valve body 20 is provided with a second bleed port 27, and the second bleed port 27 is communicated with the first fluid port 22; the first switching mechanism 40 further includes a second relief valve 47 communicating with the second relief port 27; when the second switching mechanism 50 injects water into the fourth fluid passage 25, the second relief valve 47 is configured to discharge accumulated water between the first fluid passage 22 and the second fluid passage 23. The chamber 801 filled with water through the third liquid inlet 24 is provided with a first position detection piece 802, when the second liquid inlet 23 is filled with water into the corresponding chamber 801 sufficiently to limit the movement of the piston plate 803, the piston plate 803 pushes the first position detection piece 802, and the first position detection piece 802 triggers the control end of the second pressure release valve 47 to enable the interior of the second pressure release valve 47 to enter a conduction state, so that accumulated water is circulated from the second pressure release port 27 to the water outlet.

Referring to fig. 5, in one embodiment, the first closing/opening component 42 includes a first conduit 421 connected to the first pilot port 413, a second conduit 422 connected to the input port of the first pressurizing cylinder 412, and a first pipe sleeve 423; the first conduit 421 and the second conduit 422 are arranged side by side, and the ports of the first conduit 421 and the second conduit 422 are accommodated in the first pipe sleeve 423; the first operation plate 44 can abut against the first socket 423 at a predetermined toggle angle; the first closing/opening assembly 42 further comprises a third conduit 424 communicating with the output port of the first pressurizing cylinder 412, a fourth conduit 425 communicating with the drain port, and a second sleeve 426; the third conduit 424 and the fourth conduit 425 are arranged side by side, and the ports of the third conduit 424 and the fourth conduit 425 are accommodated in the second pipe sleeve 426; the first operation plate 44 can abut against the second socket 426 at another predetermined toggle angle.

The first conduit 421 and the second conduit 422 can communicate via the lumen of the first sleeve 423, and the third conduit 424 and the fourth conduit 425 can communicate via the lumen of the second sleeve 426; by adjusting the angle of the first operation plate 44, the water storage state in the first pressurizing cylinder 412 can be adjusted, and the converter valve body 20 can be switched between conduction and blocking.

Referring to fig. 1 and 6, in one embodiment, the second switch mechanism 50 includes a second main valve body 51, a second closing assembly 52 connected to the second main valve body 51, a second base plate 53 disposed on one side of the second closing assembly 52, and a second operation plate 54 rotatably connected to the second base plate 53; an output port of the second main valve body 51 is communicated to the fourth liquid outlet 25, the second main valve body 51 is provided with a second main channel 511, and the second main valve body 51 is also provided with a second pilot port 513 communicated with the second main channel 511; the second main valve body 51 further has a second pressurizing cylinder 512, and a second closing and opening assembly 52 is connected between the second pilot port 513 and the second pressurizing cylinder 512; the second operation plate 54 is rotated to abut against a different portion of the second closing/opening unit 52, thereby communicating and switching between the second pilot port 513 and the second pressurizing cylinder 512.

By rotating the second operating plate 54, the second operating plate 54 can be rotated to correspond to the connected state or the isolated state of the second opening/closing member 52 when the second operating plate 54 is at different angles. Before the second pilot port 513 is communicated with the second pressurizing cylinder 512, the second main passage 511 is restricted by the second movable member 514 and is blocked, and when the second pilot port 513 is communicated with the second pressurizing cylinder 512, the water flow flowing out of the second pilot port 513 enters the second pressurizing cylinder 512 and pushes the second movable member 514 by using the water pressure, so that the second main passage 511 is communicated, the water flow flows to the fourth fluid port 25 along the second main passage 511, and the water flow can be injected into the fourth fluid port 25.

Referring to fig. 6, in one embodiment, the second switch mechanism 50 further includes a second orientation member 55, the second orientation member 55 is connected between the second base plate 53 and the second operation plate 54, and the second orientation member 55 is used for keeping the second operation plate 54 at the angle after the dial operation with respect to the second base plate 53.

In the present embodiment, the second orientation member 55 is a compression spring, and one end of the second orientation member 55 abuts against the second base plate 53, and the other end abuts against the vicinity of the rotation axis of the second operation plate 54, so that the second orientation member 55 is in a compressed state, and when the second operation plate 54 deflects, the deformation direction of the second orientation member 55 changes, and the second operation plate 54 is held at the post-dial angle. Specifically, one of the chambers 801 is provided with a second position detecting member 804, and when the piston plate 803 moves to the limit, the piston plate 803 deflects the second operation plate 54 by the movement of the second position detecting member 804 to switch the open-closed state of the second main valve body 51.

In this embodiment, when water needs to be injected into one of the chambers 801, water flows into one of the chambers 801 through the first switch mechanism 40, the first liquid through port 22 and the second liquid through port 23; since the piston member 30 blocks the third liquid passing port 24, the flow between the third liquid passing port 24 and the fourth liquid passing port 25 is restricted, and the water flow outputted from the second switching mechanism 50 is prevented from entering the other chamber 801. When water needs to be injected into the other cavity 801, water flows into the other cavity 801 from the second switch mechanism 50, the third through liquid port 24 and the fourth through liquid port 25; since the piston member 30 blocks the second liquid passage port 23, the flow between the first liquid passage port 22 and the second liquid passage port 23 is restricted, and the flow of water output from the first switching mechanism 40 is prevented from entering one of the chambers 801. Through the movement of the piston member 30 in the bar-shaped cavity 21, the output of the water storage device 800 is controlled by two water paths, so that the simultaneous water injection of different cavities 801 is avoided, and the overflow of the water storage device 800 is prevented.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A waterway switching device for switching water injection of different chambers, the waterway switching device comprising:

2. The waterway switching device of claim 1, wherein the second vent is configured to inject water into one of the chambers; the third liquid through hole is used for injecting water into the other cavity; in the axial direction of the strip-shaped cavity, the piston piece is movable between the first liquid through port and the fourth liquid through port.

3. The waterway switching device of claim 2, wherein the second and third liquid communication ports are arranged in a staggered manner along the circumferential direction of the bar-shaped cavity.

4. The waterway switching device of claim 2, wherein the first switch mechanism comprises a first main valve body, a first opening and closing component connected with the first main valve body, a first base plate arranged at one side of the first opening and closing component, and a first operating plate rotatably connected with the first base plate; an output port of the first main valve body is communicated to the first liquid through port, the first main valve body is provided with a first main channel, and the first main valve body is also provided with a first pilot port communicated with the first main channel; the first main valve body is also provided with a first pressurizing cylinder, and the first open-close component is connected between the first pilot port and the first pressurizing cylinder; the first operation plate is used for switching the first pilot port and the first pressurizing cylinder between communication and isolation.

5. The waterway switching device of claim 4, wherein the first switch mechanism further comprises a first directional member connected between the first base plate and the first operating plate, the first directional member being configured to maintain the first operating plate at a post-toggle angle with respect to the first base plate.

6. The waterway switching device of claim 5, wherein the converter valve body is provided with a first drain port, and the first drain port is communicated with the fourth waterway port; the first switch mechanism further comprises a first pressure relief valve communicated with the first pressure relief port, and a control end of the first pressure relief valve is located in the movable range of the first operating plate.

7. The waterway switching device of claim 5, wherein the converter valve body is provided with a second drain port, and the second drain port is communicated with the first liquid communication port; the first switch mechanism further comprises a second pressure relief valve communicated with the second pressure relief port; the second pressure relief valve is used for discharging accumulated water between the first liquid through port and the second liquid through port.

8. The waterway switching device of claim 4, wherein the first opening and closing assembly comprises a first conduit in communication with the first pilot port, a second conduit in communication with the input port of the first pressurized cylinder, and a first sleeve; the first guide pipe and the second guide pipe are arranged side by side, and ports of the first guide pipe and the second guide pipe are contained in the first pipe sleeve; the first operation plate can abut against the first socket; the first opening and closing assembly further comprises a third guide pipe communicated with an output port of the first pressurizing cylinder, a fourth guide pipe communicated with a water outlet and a second pipe sleeve; the third guide pipe and the fourth guide pipe are arranged side by side, and ports of the third guide pipe and the fourth guide pipe are contained in the second pipe sleeve; the first operation plate may be abutted against the second socket.

9. The waterway switching device of claim 2, wherein the second switch mechanism comprises a second main valve body, a second closing member connected to the second main valve body, a second base plate disposed at one side of the second closing member, and a second operation plate rotatably connected to the second base plate; the output port of the second main valve body is communicated to the fourth liquid outlet, the second main valve body is provided with a second main channel, and the second main valve body is also provided with a second pilot port communicated with the second main channel; the second main valve body is also provided with a second pressurizing cylinder, and a second closing component is connected between the second pilot port and the second pressurizing cylinder; the second operation plate is used for switching the communication and isolation between the second pilot port and the second pressurizing cylinder.

10. The waterway switching device of claim 9, wherein the second switch mechanism further comprises a second directional member connected between the second base plate and the second operating plate, the second directional member being configured to maintain the second operating plate at a post-toggle angle with respect to the second base plate.