Hydraulic switch

Abstract

The utility model provides a hydraulic switch which comprises a switch body, a first switch assembly and a second switch assembly. The hydraulic switch provided by the utility model is of a pure mechanical structure, the first switch assembly is provided with the driving piece which can be pushed to move by hydraulic power, and when the driving piece moves, the switching piece can be driven by the guide contour and the guide bulge to open and close the first backpressure cavity at preset times, so that the first backpressure cavity is opened and closed. Therefore, the waterway channel communicated through the first backpressure cavity can realize multi-section independent water outlet under the control of one-time water outlet.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kitchen and bath technical field especially, it is a kind of water power switch. BACKGROUND

[0002] Water power switch is a kind of switch with relatively ingenious structure, can realize the function of switch by water power, is widely used in some pure mechanical type water product.

[0003] The flushing of closestool often needs multi-section flushing, including circle water and main flushing water, even including third section water--supplement water in some electronic closestool, can supplement the water in storage bay after main flushing water.The switch of above-mentioned electronic closestool is mostly realized three-section independent water outlet by electric control, but when power failure or electronic component damage occurs, it will cause closestool unable to flush, seriously affect the closestool use of consumer, for this reason, the utility model provides a water power switch structure, can realize multi-section independent water outlet by mechanical structure, avoid the problem of unable to flush when power failure or electronic component damage occurs. SUMMARY

[0004] The utility model discloses to solve above-mentioned technical problem, propose a kind of water power switch structure by pure mechanical structure can realize multi-section independent water outlet.

[0005] A kind of water power switch, including switch main body, first switch component and second switch component, wherein,

[0006] The switch main body includes water inlet channel, water outlet channel, water passage, first back pressure cavity, first pressure relief cavity and first plugging piece.

[0007] The position where the first back pressure cavity is located forms a pilot valve structure, and the communication of the waterway is realized by pressure relief, specifically:

[0008] The water outlet of water inlet channel and the water inlet of water outlet channel are close to be arranged, and are all communicated with the first back pressure cavity.The first back pressure cavity and the first pressure relief cavity are provided with first communication hole, and the first pressure relief cavity is also provided with first drain hole.The first plugging piece is movably installed in the first back pressure cavity, and divides the first back pressure cavity into two regions isolated from each other, one side of the first plugging piece is communicated with the water outlet of water inlet channel and the water inlet of water outlet channel, the other side is communicated with the first communication hole, and the first plugging piece is also provided with first overflow hole communicated with the two regions in the range of the water outlet of water inlet channel.The water inlet channel and the water outlet channel are communicated or blocked by the movement of the first plugging piece.

[0009] One end of the water passage is communicated with the first pressure relief cavity, and the other end is communicated with the water inlet channel.The second switch component is installed on the switch main body, and controls the communication state of the water passage, can control the water passage to supply water into the first pressure relief cavity.

[0010] The first switch assembly comprises a driving member, a switching member and a first elastic member.

[0011] The switching member is movably installed near the first communication hole and opens or blocks the first communication hole.

[0012] The hydraulic switch is a pure mechanical structure, which comprises a first switch assembly provided with a driving member capable of being pushed to move by water force.

[0013] Preferably, the guide contour is a groove, or the guide contour is a side wall of the driving part or the driven part.

[0014] Preferably, to reduce the structural complexity and molding difficulty, the guide contour is arranged on the periphery of the driving member in a gear groove shape and has three teeth, and the guide protrusion is arranged on the driven part in a tooth shape.

[0015] Preferably, the pressure relief area is provided with a boss and a mounting base at one end of the driving member, the first communication hole is arranged at the side of the boss, the switching member is swingingly or slidingly mounted on the mounting base and is provided with a cover for opening or blocking the first communication hole. The driving member is provided with an inner cavity for accommodating the boss, the mounting base and the switching member, the driving part is arranged in the inner cavity and extends along the peripheral portion of the switching member. The peripheral portion of the driving member is provided with an annular step, a V-shaped sealing ring is mounted on the annular step at one end of the pressure relief cavity, so that the driving member forms a piston in the first pressure relief cavity.

[0016] Preferably, in order to reduce the overflow water discharged outwardly, the other end of the first drainage hole is communicated with the water outlet channel, so that the overflow water returns to the water channel. In addition, in order to avoid that the resetting speed of the driving member is too fast, the water inlet speed of the water channel to the first pressure relief cavity is less than the water outlet speed of the first drainage hole to the first pressure relief cavity, so that the time delay effect of each independent water outlet can be controlled.

[0017] Preferably, in order to make the second switch assembly more convenient to use, the water channel is also designed as a pilot valve structure, specifically:

[0018] The water channel is divided into a water inlet section and a water outlet section, one end of the water inlet section is communicated with the water inlet channel, and one end of the water outlet section is communicated with the first pressure relief cavity. The switch body further comprises a second back pressure cavity, a second pressure relief cavity and a second blocking member.

[0019] The water outlet of the water inlet section and the water inlet of the water outlet section are arranged close to each other and are both communicated with the second back pressure cavity. The second back pressure cavity and the second pressure relief cavity are provided with a second communication hole, and the second pressure relief cavity is further provided with a second drainage hole. The second blocking member is movably mounted in the second back pressure cavity and divides the second back pressure cavity into two areas isolated from each other, one side of the second blocking member is communicated with the water outlet of the water inlet section and the water outlet channel, the other side of the second blocking member is communicated with the second communication hole, and the second blocking member is further provided with a second overflow hole communicated between the two areas in the range of the water outlet of the water inlet section. The water inlet section and the water outlet section are communicated or blocked by the movement of the second blocking member.

[0020] The second switch assembly is mounted in the second pressure relief cavity and controls the communication state of the second communication hole, so as to control the opening or closing state of the second back pressure cavity, and further control the communication state of the water channel.

[0021] Preferably, the second switch assembly comprises a pressure relief member, a third elastic member and a switch member. The pressure relief member is movably arranged in the second pressure relief cavity and is provided with a plugging rod inserted into the second back pressure cavity from the second communication hole. An end of the plugging rod is provided with a plug. The plug opens the second communication hole by further inserting the plugging rod into the second back pressure cavity. The third elastic member provides a restoring force for the pressure relief member to move away from the second communication hole. The restoring action of the plug withdrawing from the second back pressure cavity blocks the second communication hole.

[0022] The switch member is arranged at one end of the second pressure relief cavity and pushes the plugging rod to further insert into the second back pressure cavity.

[0023] Preferably, the switch member is a gas bag / hydraulic device arranged in the second pressure relief cavity and located on the side of the second pressure relief member away from the second back pressure cavity. The gas bag / hydraulic device is provided with a medium flow hole extending to the outside of the switch body. The gas bag / hydraulic device expands by inputting air / liquid and pushes the pressure relief member to be close to the back pressure cavity.

[0024] Preferably, an accommodating groove is arranged at the end of the pressure relief member away from the back pressure cavity. The driving member is a bellows-shaped gas bag arranged at one end of the accommodating groove and forms a cover of the pressure relief cavity at the other end.

[0025] Preferably, the water outlet is arranged around the water inlet. The plugging member is an elastic rubber pad. The periphery of the rubber pad is fixedly arranged on the peripheral wall of the back pressure cavity by pressing. The middle part of the rubber pad blocks or opens the water outlet and the water inlet at the same time. A guide rod is arranged in the back pressure cavity and passes through the overflow hole. The gap between the guide rod and the overflow hole forms an overflow channel. Therefore, the overflow hole can be made larger to reduce the difficulty of molding. Meanwhile, the guide rod also has a guide function.

[0026] As can be seen from the above description of the utility model, the utility model has the following beneficial effects:

[0027] The hydraulic switch provided by the utility model is a pure mechanical structure. The first switch assembly comprises a driving member capable of being pushed and moved by water force. When the driving member moves, the switch member can be driven by the guide contour and the guide protrusion to open and close the first back pressure cavity for a preset number of times. Therefore, the water passage connected with the first back pressure cavity can be controlled to discharge multiple independent water flows at one time.

[0028] The driving structure of the guide contour and the guide protrusion is ingenious and convenient to control the water discharge or water stop time by the length of the contour.

[0029] The first drain hole of the first pressure relief cavity is connected to the water discharge passage. The overflow water is returned to the water passage to reduce the overflow water discharged to the outside.

[0030] The first drain hole drains water to the first pressure relief cavity at a speed less than the water inlet speed of the water passage to the first pressure relief cavity, so as to control the reset speed of the driving member, and further control the delay effect of each independent water outlet.

[0031] The water passage is also designed as a pilot valve structure, so that the second switch assembly is more convenient to use.

[0032] The second switch assembly adopts an air bag / hydraulic device as a switch member, which is simple in structure, and the inflation or water flushing switch button thereof can be extended to a long distance through a conduit, so as to realize remote installation of the switch button. BRIEF DESCRIPTION OF DRAWINGS

[0033] The accompanying drawings, which are included to provide a further understanding of the present application and constitute a part of this application, illustrate embodiments of the present application and together with the description serve to explain the present application. The present application is not intended to be unduly limited by the illustrative embodiments and descriptions thereof.

[0034] Wherein:

[0035] Figure 1 It is a shaft side view of a water switch Figure One ;

[0036] Figure 2 It is a shaft side view of a water switch Figure Two ;

[0037] Figure 3 It is an explosion of a water switch Figure One ;

[0038] Figure 4 It is an explosion of a water switch Figure Two ;

[0039] Figure 5 It is a top view of a water switch;

[0040] Figure 6 It is a front view of a water switch;

[0041] Figure 7 It is a sectional view of a water switch Figure One ; (about A-A, initial state) Figure 5

[0042] Figure 8 It is a sectional view of a water switch Figure Two ; (about B-B, initial state) Figure 6

[0043] Figure 9 It is a sectional view of a water switch Figure Three ; (first water outlet) ​​

[0044] Figure 10 is a sectional view of a hydraulic switch Figure Four ; (first time water stop)

[0045] Figure 11 is a sectional view of a hydraulic switch Figure Five ; (second time water stop)

[0046] Figure 12 is a sectional view of a hydraulic switch Figure Six ; (second time water stop)

[0047] Figure 13 is a sectional view of a hydraulic switch Figure Seven ; (third time water stop)

[0048] Figure 14 is a sectional view of a hydraulic switch Figure Eight ; (third time water stop)

[0049] Figure 15 is a sectional view of a hydraulic switch in another embodiment Figure One ; (switching member is slidingly installed)

[0050] Figure 16 is a sectional view of a hydraulic switch in another embodiment Figure Two ; (switching member is slidingly installed, and C-C is relative to Figure 15 )

[0051] Figures 1 to 16 The labels in the figure are respectively: switch body 1, water inlet channel 11, water outlet channel 12, water passing channel 13, water inlet section 131, water outlet section 132, first back pressure cavity 14, first pressure relief cavity 15, first communication hole 151, first drainage hole 152, pressure relief area 153, retreat area 154, first plugging member 16, first overflow hole 161, second back pressure cavity 17, second pressure relief cavity 18, second communication hole 181, second drainage hole 182, second plugging member 19, second overflow hole 191, first switch assembly 2, driving member 21, V-shaped sealing ring 211, driving part 212, switching member 22, driven part 221, first elastic member 23, second elastic member 24, second switch assembly 3, pressure relief member 31, plugging rod 311, plug 312, third elastic member 32, switch member 33, medium flow-through hole 331, guide contour 4, recessed track 41, protruding track 42, guide protrusion 5. DETAILED DESCRIPTION

[0052] In order to make the technical problems, technical solutions and beneficial effects of the utility model clearer and more understandable, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0053] Please refer to Figures 1 to 14 A water switch, comprising a switch body 1, a first switch assembly 2 and a second switch assembly 3, wherein,

[0054] The switch body 1 comprises a water inlet channel 11, a water outlet channel 12, a water passing channel 13, a first back pressure cavity 14, a first pressure relief cavity 15 and a first plugging member 16.

[0055] The position where the first back pressure cavity 14 is located forms a pilot valve structure, and the water passage is connected by pressure relief, specifically:

[0056] The water outlet of the water inlet channel 11 and the water inlet of the water outlet channel 12 are arranged close to each other and are both connected to the first back pressure cavity 14. The first back pressure cavity 14 and the first pressure relief cavity 15 are provided with a first communication hole 151, and the first pressure relief cavity 15 is further provided with a first drain hole 152. The first plugging member 16 is movably installed in the first back pressure cavity 14 and divides the first back pressure cavity 14 into two areas that are isolated from each other. One side of the first plugging member 16 is connected to the water outlet of the water inlet channel 11 and the water inlet of the water outlet channel 12, and the other side is connected to the first communication hole 151. The first plugging member 16 is further provided with a first overflow hole 161 that connects the two areas within the range of the water outlet of the water inlet channel 11. The water inlet channel 11 and the water outlet channel 12 are connected or blocked by the movement of the first plugging member 16.

[0057] One end of the water passing channel 13 is connected to the first pressure relief cavity 15, and the other end is connected to the water inlet channel 11. The second switch assembly 3 is installed on the switch body 1 and controls the connection state of the water passing channel 13, which can control the water supply of the water passing channel 13 to the first pressure relief cavity 15.

[0058] The first switch assembly 2 comprises a driving member 21, a switching member 22 and a first elastic member 23. The driving member 21 and the first pressure relief cavity 15 are both cylindrical, and the driving member 21 is slidably installed in the first pressure relief cavity 15 as a piston. Preferably, the peripheral part of the driving member 21 is provided with an annular step, and a V-shaped sealing ring 211 is installed at one end of the annular step facing the pressure relief cavity, so that the driving member 21 forms a piston in the first pressure relief cavity 15.

[0059] The driving member 21 divides the first pressure relief cavity 15 into a pressure relief area 153 and a retreat area 154. The first communication hole 151, the first drain hole 152 and the water passing channel 13 are all connected to the pressure relief area 153. When the water passing channel 13 supplies water to the first pressure relief cavity 15, it can push the driving member 21 to move, and the first elastic member 23 provides a restoring force for the driving member 21 to move to the pressure relief area 153.

[0060] The switching piece 22 is movably installed near the first communication hole 151 and opens or blocks the first communication hole 151. The driving piece 21 is provided with a driving part 212, the switching piece 22 is provided with a driven part 221 at the side of the driving piece 21, one of the driving part 212 or the driven part 221 is provided with a guide contour 4, and the other is provided with a guide protrusion 5 which moves along the guide contour 4. During the movement of the driving piece 21, the driving part 212 drives the driven part 221 to reciprocate in the direction perpendicular to the movement direction of the driving piece 21 through the guide contour 4 and the guide protrusion 5, and the switching piece 22 opens and blocks the first communication hole 151 through the reciprocating movement, thereby realizing the switching action of opening and closing the first back pressure cavity 14 a preset number of times in one movement of the driving piece 21, and realizing the effect of multiple independent water outlet.

[0061] The guide contour 4 is a groove, or the guide contour 4 is the side wall of the driving part 212 or the driven part 221. The guide contour 4 is sequentially composed of a plurality of concave tracks 41 and convex tracks 42 along the movement direction of the driving piece 21, so that when the guide contour 4 and the guide protrusion 5 move in the relative direction parallel to the movement of the driving piece 21, the guide contour 4 and the guide protrusion 5 also appear relative swing in the direction perpendicular to the movement direction of the driving piece 21. In this embodiment, in order to reduce the complexity of the structure and the difficulty of molding, the guide protrusion 5 is provided on the driven part 221 in a tooth shape, and the guide contour 4 is provided on the peripheral part of the driving piece 21 in a tooth groove shape and has three teeth, so that the guide protrusion 5 has three swing actions, thereby realizing three independent water outlets. In addition, the driving piece 21 is also provided with a second elastic piece 24 which pushes the driven part 221 to tightly contact the driving part 212, thereby improving the guiding effect of the guide contour 4 on the guide protrusion 5 and the sealing degree of the switching piece 22 when blocking the first communication hole 151. Preferably, the first elastic piece 23 and the second elastic piece 24 are both compressed springs, the first elastic piece 23 is arranged in the retreat area 154 of the first pressure relief cavity 15, and the second elastic piece 24 is arranged in the pressure relief area 153 of the first pressure relief cavity 15.

[0062] For the specific structure of the driving piece 21 and the switching piece 22, in an embodiment, the pressure relief area 153 is provided with a boss and a mounting seat at one end of the driving piece 21, the first communication hole 151 is arranged at the side of the boss, and the switching piece 22 is swingingly installed on the mounting seat (in another embodiment, slidingly installed, such as Figure 15 and Figure 16 ), and is provided with a cover which opens or blocks the first communication hole 151. The driving piece 21 is provided with an inner cavity which accommodates the boss, the mounting seat and the switching piece 22, and the driving part 212 is arranged in the inner cavity and extends along the peripheral part of the switching piece 22.

[0063] In one embodiment, to reduce the outflow of overflow water, the other end of the first drain hole 152 is connected to the water outlet channel 12, so that the overflow water returns to the water channel. In addition, to avoid the reset speed of the driving member 21 being too fast, the water draining speed of the first drain hole 152 to the first pressure relief chamber 15 is less than the water inflow speed of the water passage 13 to the first pressure relief chamber 15, so that the delay effect of each independent water outlet can be controlled.

[0064] On the basis of the above-mentioned embodiments, to make the second switch assembly 3 more convenient to use, in one embodiment, the water passage 13 is also designed as a pilot valve structure, specifically:

[0065] The water passage 13 is divided into a water inlet section 131 and a water outlet section 132, one end of the water inlet section 131 is connected to the water inlet channel 11, and one end of the water outlet section 132 is connected to the first pressure relief chamber 15. The switch body 1 further includes a second back pressure chamber 17, a second pressure relief chamber 18, and a second blocking member 19. The water outlet of the water inlet section 131 and the water inlet of the water outlet section 132 are arranged close to each other and are both connected to the second back pressure chamber 17. The second back pressure chamber 17 and the second pressure relief chamber 18 are provided with a second communication hole 181, and the second pressure relief chamber 18 is further provided with a second drain hole 182. The second blocking member 19 is movably installed in the second back pressure chamber 17 and divides the second back pressure chamber 17 into two areas that are isolated from each other. One side of the second blocking member 19 is connected to the water outlet of the water inlet section 131 and the section of the water outlet channel 12, and the other side is connected to the second communication hole 181. The second blocking member 19 is further provided with a second overflow hole 191 in the range of the water outlet of the water inlet section 131, which connects the two areas. The water inlet section 131 and the water outlet section 132 are connected or blocked by the movement of the second blocking member 19. The second switch assembly 3 is installed in the second pressure relief chamber 18 and controls the connection state of the second communication hole 181, so as to control the opening or closing state of the second back pressure chamber 17, and further control the connection state of the water passage 13.

[0066] For the second switch assembly 3, in one embodiment, the second switch assembly 3 includes a pressure relief member 31, a third elastic member 32, and a switch member 33. The pressure relief member 31 is movably installed in the second pressure relief chamber 18 and is provided with a blocking rod 311 inserted into the second back pressure chamber 17 from the second communication hole 181. The end of the blocking rod 311 is provided with a plug 312. The plug 312 opens the second communication hole 181 by further inserting the blocking rod 311 into the second back pressure chamber 17. The third elastic member 32 provides a reset force for the pressure relief member 31 away from the second communication hole 181. The plug 312 blocks the second communication hole 181 by the reset action of the blocking rod 311 exiting the second back pressure chamber 17.

[0067] The switch piece 33 is arranged in the second pressure relief cavity 18 and pushes the blocking rod 311 to further insert into the second back pressure cavity 17. Alternatively, the switch piece 33 is an air bag / hydraulic device arranged in the second pressure relief cavity 18 and located on the side of the second pressure relief piece 31 away from the second back pressure cavity 17, the air bag / hydraulic device is provided with a medium flow hole 331 extending to the outside of the switch main body 1, the air bag / hydraulic device is inflated by input air / liquid and pushes the pressure relief piece 31 to be close to the back pressure cavity. Further, the end of the pressure relief piece 31 away from the back pressure cavity is provided with a containing groove, the driving piece 21 is a bellows-shaped air bag, one end of which is arranged in the containing groove and the other end forms the cover of the pressure relief cavity.

[0068] For the above-mentioned pilot valve structure, the state of the blocking piece is controlled by the water pressure difference between the two ends of the blocking piece, and the principle belongs to the prior art, which will not be repeated here. In order to better play the role of switching, the water inlet, water outlet and blocking piece in the first back pressure cavity 14 and the second back pressure cavity 17 can adopt the following structure: the water outlet is arranged around the water inlet. The blocking piece is an elastic rubber pad, the periphery of which is fixedly arranged on the peripheral wall of the back pressure cavity by pressing, and the middle part simultaneously blocks or opens the water outlet and the water inlet. The back pressure cavity is provided with a guide rod passing through the overflow hole, and the gap between the guide rod and the overflow hole forms an overflow channel, so that the overflow hole can be made larger, the forming difficulty is reduced, and the guide function is also achieved.

[0069] The use principle of the hydraulic switch provided by the utility model is as follows:

[0070] In the initial state, the second back pressure cavity 17 is closed, the water passage 13 is blocked, under the action of the first elastic piece 23, the driving piece 21 is close to the first back pressure cavity 14, the switching piece 22 blocks the first communication hole 151, and the first back pressure cavity 14 is also closed, the water inlet passage 11 and the water outlet passage 12 are disconnected.

[0071] When the air bag of the second switch assembly 3 is inflated, the air bag expands and pushes the pressure relief piece 31 to move to the second back pressure cavity 17, at this time, the blocking rod 311 opens the second back pressure cavity 17, the water passage 13 is connected, and water is injected into the first pressure relief cavity 15, under the action of water force, the driving piece 21 is pushed and moves and is separated from the switching piece 22, at this time, the guide convex 5 is located at the tooth at the outermost end of the guide contour 4, so as to drive the switching piece 22 to swing and open the first communication hole 151, and then open the first back pressure cavity 14, at this time, the water inlet passage 11 is connected with the water outlet passage 12, and the water outlet passage 12 discharges water for the first time.

[0072] The pressure relief member 31 resets under the action of the third elastic member 32, the second back pressure cavity 17 is closed again, the first pressure relief cavity 15 no longer takes in water and drains through the first drain hole 152, at the same time, the driving member 21 gradually resets under the action of the first elastic member 23, the guide protrusion 5 comes to the tooth groove at the outermost end of the guide contour 4, thereby driving the switching member 22 to swing and close the first communication hole 151, and further close the first back pressure cavity 14, at this time, the water inlet channel 11 and the water outlet channel 12 are blocked, and the water outlet channel 12 stops water for the first time;

[0073] The first pressure relief cavity 15 continues to drain through the first drain hole 152, the driving member 21 continues to reset under the action of the first elastic member 23, the guide protrusion 5 comes to the tooth at the middle of the guide contour 4, thereby driving the switching member 22 to swing and open the first communication hole 151, and further open the first back pressure cavity 14, at this time, the water inlet channel 11 is communicated with the water outlet channel 12, and the water outlet channel 12 discharges water for the second time;

[0074] The first pressure relief cavity 15 continues to drain through the first drain hole 152, the driving member 21 continues to reset under the action of the first elastic member 23, the guide protrusion 5 comes to the tooth groove at the innermost side of the guide contour 4, thereby driving the switching member 22 to swing and close the first communication hole 151, and further close the first back pressure cavity 14, at this time, the water inlet channel 11 and the water outlet channel 12 are blocked, and the water outlet channel 12 stops water for the second time;

[0075] The first pressure relief cavity 15 continues to drain through the first drain hole 152, the driving member 21 continues to reset under the action of the first elastic member 23, the guide protrusion 5 comes to the tooth at the innermost side of the guide contour 4, thereby driving the switching member 22 to swing and open the first communication hole 151, and further open the first back pressure cavity 14, at this time, the water inlet channel 11 is communicated with the water outlet channel 12, and the water outlet channel 12 discharges water for the third time;

[0076] The first pressure relief cavity 15 continues to drain through the first drain hole 152, the driving member 21 continues to reset under the action of the first elastic member 23, the guide protrusion 5 comes to the tooth groove at the innermost side of the guide contour 4, thereby driving the switching member 22 to swing and close the first communication hole 151, and further close the first back pressure cavity 14, at this time, the water inlet channel 11 and the water outlet channel 12 are blocked, and the water outlet channel 12 stops water for the third time, and then the driving member 21 gradually returns to the initial state.

[0077] The hydraulic switch provided by the utility model is a pure mechanical structure, which comprises a first switch assembly 2, which is provided with a driving piece 21 capable of being pushed and moved by water force, and when the driving piece 21 moves, the switching piece 22 can be driven by the guide contour 4 and the guide convex 5 to open and close the first back pressure cavity 14 for a preset number of times, so that the waterway channel communicated by the first back pressure cavity 14 can be controlled to discharge multiple independent water under one water discharge.

[0078] In the description of the utility model, it is to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0079] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0080] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0081] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "on", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0082] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0083] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. Changes, modifications, replacements and variations of the above embodiments made by those skilled in the art are within the scope of the present application.

Claims

1. A hydraulic switch, characterized in that, The switch body, the first switch assembly and the second switch assembly are included. The switch body includes a water inlet channel, a water outlet channel, a water passing channel, a first back pressure cavity, a first pressure relief cavity and a first plugging member. The water outlet of the water inlet channel and the water inlet of the water outlet channel are arranged close to each other and are both communicated with the first back pressure cavity; the first back pressure cavity and the first pressure relief cavity are provided with a first communication hole, and the first pressure relief cavity is further provided with a first water outlet hole; the first plugging member is movably installed in the first back pressure cavity and divides the first back pressure cavity into two areas isolated from each other; one side of the first plugging member is communicated with the water outlet of the water inlet channel and the water inlet of the water outlet channel, and the other side is communicated with the first communication hole; and the first plugging member is further provided with a first overflow hole communicated with the two areas within the range of the water outlet of the water inlet channel; the water inlet channel and the water outlet channel are communicated or blocked by the movement of the first plugging member. One end of the water passing channel is communicated with the first pressure relief cavity, and the other end is communicated with the water inlet channel; the second switch assembly is installed on the switch body and controls the communication state of the water passing channel; The first switch assembly includes a driving member, a switching member and a first elastic member; the driving member is slidably installed in the first pressure relief cavity in a piston manner and divides the first pressure relief cavity into a pressure relief area and a retreat area; the first communication hole, the first water outlet hole and the water passing channel are all communicated with the pressure relief area; the first elastic member provides a restoring force for the driving member to move to the pressure relief area; the switching member is movably installed close to the first communication hole and opens or blocks the first communication hole; the driving member is provided with a driving part, the switching member is provided with a driven part on the side of the driving member, one of the driving part or the driven part is provided with a guide contour, and the other is provided with a guide protrusion moving along the guide contour; during the movement of the driving member, the driven part is reciprocally swung in a direction perpendicular to the movement direction of the driving member through the guide contour and the guide protrusion, and the switching member forms an opening and blocking switching action on the first communication hole through the reciprocating swing.

2. A hydraulic switch according to claim 1, characterised in that The guide contour is a groove, or the guide contour is a side wall of the driving part or the driven part; the guide contour is sequentially composed of a plurality of concave tracks and convex tracks along the movement direction of the driving member, and the driving member is further provided with a second elastic member; the second elastic member pushes the driven part to tightly contact the driving part.

3. A hydraulic switch according to claim 2, characterised in that The guide contour is arranged on the peripheral part of the driving member in a tooth groove shape and has three teeth; the guide protrusion is arranged on the driven part in a tooth shape; the first elastic member and the second elastic member are both compressed springs; the first elastic member is arranged in the retreat area of the first pressure relief cavity, and the second elastic member is arranged in the pressure relief area of the first pressure relief cavity.

4. A hydraulic switch according to claim 2, wherein The pressure relief area is provided with a boss and a mounting seat at one end of the driving member, the first communication hole is arranged at the side of the boss, the switching member is swing or slide mounted on the mounting seat, and is provided with a cover for opening or blocking the first communication hole; the driving member is provided with an inner cavity for accommodating the boss, the mounting seat and the switching member, the driving part is arranged in the inner cavity and extends along the peripheral part of the switching member; the peripheral part of the driving member is provided with an annular step, and a V-shaped sealing ring is mounted on one end of the annular step towards the pressure relief cavity.

5. A hydraulic switch according to claim 1, wherein The other end of the first drainage hole is communicated with the water outlet channel, and the drainage speed of the first drainage hole to the first pressure relief cavity is less than the water inlet speed of the water outlet channel to the first pressure relief cavity.

6. A hydraulic switch according to claim 1, wherein The water outlet channel is divided into a water inlet section and a water outlet section, one end of the water inlet section is communicated with the water inlet channel, and one end of the water outlet section is communicated with the first pressure relief cavity; the switch body further comprises a second back pressure cavity, a second pressure relief cavity and a second blocking member; The water outlet of the water inlet section and the water inlet of the water outlet section are arranged close to each other and are both communicated with the second back pressure cavity; the second back pressure cavity and the second pressure relief cavity are provided with a second communication hole, and the second pressure relief cavity is further provided with a second drainage hole; the second blocking member is movably mounted in the second back pressure cavity and divides the second back pressure cavity into two areas isolated from each other, one side of the second blocking member is communicated with the water outlet of the water inlet section and the section of the water outlet channel, and the other side is communicated with the second communication hole, and the second blocking member is further provided with a second overflow hole for communicating the two areas within the range of the water outlet of the water inlet section; the water inlet section and the water outlet section are communicated or blocked by the movement of the second blocking member; The second switch assembly is mounted in the second pressure relief cavity and controls the communication state of the second communication hole.

7. A hydraulic switch according to claim 6, characterised in that The second switch assembly comprises a pressure relief member, a third elastic member and a switch member; the pressure relief member is movably mounted in the second pressure relief cavity and is provided with a blocking rod inserted into the second back pressure cavity from the second communication hole, the end of the blocking rod is provided with a plug, the plug opens the second communication hole by further inserting the blocking rod into the second back pressure cavity, the third elastic member provides a restoring force for the pressure relief member away from the second communication hole, and the plug blocks the second communication hole by the restoring action of the blocking rod withdrawing from the second back pressure cavity; One end of the switch member is arranged in the second pressure relief cavity and pushes the blocking rod to further insert into the second back pressure cavity.

8. A hydraulic switch according to claim 7, characterised in that The switch member is a gas bag / hydraulic device mounted in the second pressure relief cavity and located on the side of the pressure relief member away from the second back pressure cavity, the gas bag / hydraulic device is provided with a medium flow hole extending to the outside of the switch body, and the gas bag / hydraulic device expands by inputting air / liquid and pushes the pressure relief member close to the back pressure cavity.

9. A hydraulic switch according to claim 8, characterised in that One end of the pressure relief member away from the back pressure cavity is provided with a receiving groove, and the driving member is a bellows-shaped gas bag mounted in the receiving groove at one end and forming a cover of the pressure relief cavity at the other end.

10. A hydraulic switch according to claim 1 or 6, characterised in that The water outlet is arranged around the water inlet; the blocking member is an elastic rubber pad, the peripheral part is fixedly mounted on the peripheral wall of the back pressure cavity by pressing, and the middle part simultaneously blocks or opens the water outlet and the water inlet; a guide rod is arranged in the back pressure cavity and passes through the overflow hole, and the gap between the guide rod and the overflow hole forms an overflow channel.

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