Fluid valve and cleaning device

Abstract

The utility model discloses a fluid valve and a cleaning device, the fluid valve is installed on the cleaning device and used for achieving liquid supply of the cleaning device, the fluid valve comprises a fluid channel and a plunger assembly, and the plunger assembly is configured to be capable of being driven by a trigger of the cleaning device to move in the direction of a first axis so as to open or close the fluid channel. The plunger assembly comprises a plunger and a stress piece, the stress piece is detachably assembled on the plunger, at least part of the end face of the stress piece is a convex curved surface, and the trigger abuts against the stress piece on the convex curved surface. According to the utility model, the stress piece of the corresponding model can be quickly replaced according to the difference of the assembly space caused by the difference of the models of different products, so that the suitability between the fluid valve and the products is improved, and the matching between the trigger and the plunger is more reliable. Moreover, the convex curved surface abutting against the trigger can play a role in releasing force, so that the plunger moves in the direction of the first axis, and the sealing performance of the fluid valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid control valves, in particular to a fluid valve and a cleaning device. Background Art

[0002] A fluid valve typically includes a valve body with a fluid chamber and a plunger movably disposed within the valve body. The valve body is provided with a fluid inlet and a fluid outlet communicating with the fluid chamber, and the plunger is provided with a sealing ring. The plunger moves between a blocking position and a conducting position. In the blocking position, the sealing ring contacts the inner wall of the fluid chamber to block the fluid outlet. In the conducting position, a gap is defined between the sealing ring and the inner wall of the fluid chamber, allowing fluid to flow through the gap to the fluid outlet. The end face of the plunger is typically flat to facilitate application of a linear driving force along the plunger's axis.

[0003] However, when a trigger is used to drive the fluid valve, due to the nonlinearity of the trigger movement and the flat end face of the plunger, the plunger will be deflected along the axial direction, resulting in inconsistent forces on both sides of the sealing ring. A gap will be generated between the sealing ring and the inner wall of the fluid chamber, resulting in poor sealing effect and causing fluid leakage.

[0004] In order to solve the above problems, the relevant technology sets the end face of the plunger to a spherical surface. In this way, although the trigger is driven by rotation, the spherical structure that interferes with the trigger will release the force, which can ensure that the main force direction of the plunger is consistent with the axial direction of the plunger.

[0005] However, the existing spherical structure is integrally formed at the end of the plunger. Due to the fixed size of the sphere, when the same fluid valve is applied to product platforms with different assembly spaces, the difference in assembly space will cause deviations in the fit between the trigger and the spherical structure, thereby affecting the reliability of the fit between the trigger and the fluid valve. Utility Model Content

[0006] The purpose of the utility model is to provide a fluid valve and a cleaning device, aiming to solve the problem of poor matching reliability between the trigger and the fluid valve due to differences in assembly spaces when the same fluid valve is applied to product platforms with different assembly spaces.

[0007] In order to achieve one of the above objectives, the present invention provides a fluid valve for a cleaning device, the fluid valve comprising a fluid channel and a plunger assembly, the plunger assembly being configured to be driven by a trigger of the cleaning device to move in the direction of a first axis to open or close the fluid channel, the plunger assembly comprising:

[0008] a plunger, which opens the fluid channel when the plunger is in a first position in the direction of the first axis, and closes the fluid channel when the plunger is in a second position in the direction of the first axis;

[0009] A force-bearing member is detachably mounted on the plunger and is configured to be abutted by the trigger when the trigger is triggered, so as to drive the plunger to move in the direction of the first axis, wherein at least a portion of an end face of the force-bearing member is an outwardly convex surface, and the trigger abuts the force-bearing member on the outwardly convex surface.

[0010] Furthermore, the force-bearing member is formed as a screw, the screw is threadedly connected to the plunger, and the head of the screw has the convex curved surface.

[0011] Furthermore, the plunger is provided with a connecting hole extending along the first axis, and the screw is threadedly connected to the connecting hole.

[0012] Furthermore, the diameter of the head of the screw is smaller than the diameter of the plunger.

[0013] Furthermore, the fluid valve further includes a first valve body and a second valve body connected to each other, wherein the first valve body defines a valve cavity, the first valve body is provided with a liquid inlet flow channel, the valve cavity is connected to the liquid inlet flow channel, and the second valve body is provided with a liquid outlet flow channel and a flow port;

[0014] A sealing ring is provided on the plunger. When the plunger is in the first position, the sealing ring is in sealing cooperation with the flow opening.

[0015] Furthermore, a gasket is provided between the head of the screw and the end surface of the plunger, and the diameter of the gasket is larger than the diameter of the plunger;

[0016] A compression spring is sleeved on the plunger, one end of the compression spring abuts against the second valve body, and the other end abuts against the gasket. When the trigger is not triggered, the compression spring presses against the plunger through the gasket to keep the plunger in the second position. When the trigger is triggered, the plunger is moved to the second position by the trigger while compressing the compression spring through the gasket.

[0017] Furthermore, a limit seat is provided on the first valve body, a guide hole is provided on the limit seat, and a guide column is provided at one end of the plunger located in the valve cavity to slide with the guide hole.

[0018] In order to achieve one of the above-mentioned purposes, one embodiment of the present invention provides a cleaning device, including a body, a cleaning component connected to the body, including the fluid valve as described above, the cleaning component including a handle and a cleaning nozzle, the fluid valve and the trigger are arranged on the handle, and the cleaning nozzle is provided with a nozzle connected to the fluid channel.

[0019] Furthermore, the handle includes a handle body and two shells connected to the handle body, the two shells enclose a cavity for installing the fluid valve, the trigger is rotatably connected to the two shells, the convex surface is located outside the cavity, and at least part of the convex surface is located on the rotation path of the trigger.

[0020] Furthermore, a wear-reducing plate is provided between the contact position between the trigger and the force-bearing member.

[0021] Compared with the prior art, in the present invention, since the force-bearing member is detachably assembled on the plunger, when the fluid valve is applied to product platforms with different assembly spaces, it is only necessary to replace the appropriate force-bearing member to allow the trigger to reliably contact the force-bearing member, thereby ensuring reliable cooperation between the trigger and the fluid valve, improving the versatility of the fluid valve, and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a cross-sectional view of a fluid valve of the present invention, wherein the plunger is in a second position;

[0023] Figure 2 is a cross-sectional view of a fluid valve of the present invention, wherein the plunger is in a first position;

[0024] Figure 3 This is an axonometric diagram of a cleaning device of the present utility model;

[0025] Figure 4 This is a front view of a handle in a cleaning device of the present invention;

[0026] Figure 5 This is an exploded view of a handle in a cleaning device of the present invention;

[0027] Figure 6 is a cross-sectional view of a handle in a cleaning device of the present invention, wherein the plunger is in a second position;

[0028] Figure 7 yes Figure 6 A schematic diagram of the structure of part A;

[0029] Figure 8 It is a partial structural sectional view of a handle in a cleaning device of the utility model, wherein the plunger is located in a first position.

[0030] Reference numerals:

[0031] 10. Fluid valve; 11. First valve body; 111. Valve chamber; 112. Liquid inlet channel; 113. Position limiting seat; 1131. Guide hole; 12. Second valve body; 121. Liquid outlet channel; 122. Flow port; 13. Plunger assembly; 131. Plunger; 1311. Connecting hole; 1312. Guide column; 1313. Slot; 132. Force-bearing member; 1321. Rod; 1322. Head; 133, sealing ring; 134, gasket; 135, compression spring; 21, trigger; 211, rotating shaft; 22, friction reducing plate; 30, fuselage; 40, cleaning component; 41, handle; 411, handle body; 412, first shell; 413, second shell; 414, rotating shaft hole; 415, cavity; 42, cleaning nozzle; 43, nozzle; 44, hose; 45, hard tube. DETAILED DESCRIPTION

[0032] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0033] The terms "first", "second", etc. in this utility model are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated; in addition, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, the connection can be a direct connection or an indirect connection through an intermediate medium. It can be a fixed connection, a movable connection, a detachable connection, or an integral connection. "Sealed connection" refers to the relative seal between two elements. It can be connected by an interference fit or connected by other elements to achieve a sealing effect. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0034] In order to make those skilled in the art better understand the technical solution of the present invention, the following will be combined with the appended drawings in the embodiment of the present invention. Figure 1 -8. Provide a clear and complete description of the technical solutions in the embodiments of the present invention.

[0035] One embodiment of the present invention provides a fluid valve for a cleaning device. The fluid valve 10 is mainly used in a liquid supply module in the cleaning device to control the closing and opening of liquid flow. Figure 1 and Figure 2The fluid valve 10 includes a valve body and a plunger assembly 13. A fluid passage is formed within the valve body. The plunger assembly 13 is configured to be driven by a trigger 21 of a cleaning device described below to move in the direction of a first axis to open or close the fluid passage. When the fluid passage is open, liquid is conducted and can be supplied to other components of the cleaning device. When the fluid passage is closed, the liquid supply is cut off.

[0036] The valve body includes a first valve body 11 and a second valve body 12, and the first valve body 11 and the second valve body 12 are sealed and connected. The first valve body 11 and the second valve body 12 define the above-mentioned fluid channel. Specifically, a valve cavity 111 is defined in the first valve body 11, and the first valve body 11 is provided with a liquid inlet channel 112, and the valve cavity 111 is connected to the liquid inlet channel 112. The second valve body 12 is provided with a liquid outlet channel 121 and a flow port 122 connected to the liquid outlet channel 121. The liquid inlet channel 112, the valve cavity 111, the flow port 122 and the liquid outlet channel 121 form the above-mentioned fluid channel. Figure 2 As shown, the direction of arrow a is the direction of liquid flow. The liquid can enter the valve cavity 111 from the liquid inlet channel 112 and then enter the liquid outlet channel 121 through the flow port 122 to realize the supply of liquid.

[0037] The plunger assembly 13 includes a plunger 131 and a force-bearing member 132 detachably connected to the plunger 131. The first axis is collinear with the axis of the plunger 131. When the plunger 131 is in a first position in the direction of the first axis, the fluid passage is opened, and when the plunger 131 is in a second position in the direction of the first axis, the fluid passage is closed.

[0038] A sealing ring 133 is provided on the plunger 131. The sealing ring 133 is fixedly connected to the plunger 131 and is located in the valve chamber 111. When the plunger 131 is in the first position, the sealing ring 133 is sealed with the flow port 122, that is, the sealing ring 133 is pressed against the inner wall of the first valve body 11 near the flow port 122, so that the sealing ring 133 can seal the flow port 122 and the fluid channel is closed. When the plunger 131 is in the second position, a flow gap is formed between the sealing ring 133 and the flow port 122, so that the liquid outlet channel 121 is connected to the valve chamber 111 to open the fluid channel. Therefore, by providing the sealing ring 133, the sealing effect between the plunger assembly 13 and the valve body can be better, thereby avoiding leakage of the fluid valve 10.

[0039] It is easier to understand that in order to improve the sealing performance between the plunger 131 and the valve body, an annular groove recessed in the axial direction of the plunger 131 can be provided on the plunger 131, and a sealing ring (not shown in the figure) is connected to the annular groove. The sealing ring is sealed with the inner wall of the valve body, thereby further improving the sealing performance of the fluid valve 10.

[0040] The force-receiving member 132 cooperates with the trigger 21 in the cleaning device. When the trigger 21 in the cleaning device is triggered, the trigger 21 contacts the force-receiving member 132, causing the force-receiving member 132 to drive the plunger 131 to move in the direction of the first axis. One end surface of the force-receiving member 132 is at least partially an outwardly convex surface, and the trigger 21 contacts the force-receiving member 132 on the convex surface.

[0041] The end surface of the force-receiving member 132 facing away from the plunger 131 is configured as an outwardly convex surface. The outwardly convex surface can be a spherical surface, an arcuate surface, or other curved surface. It should be noted that the outwardly convex surface protrudes beyond the outer edge of the plunger 131 to ensure more reliable engagement of the trigger 21 with the outwardly convex surface. The outwardly convex surface is positioned along the travel path of the trigger 21 and engages with the trigger 21. During movement of the trigger 21, the outwardly convex surface propels the force-receiving member 132 and the plunger 131 in the direction of the first axis. When the trigger 21 rotates to apply force to the force-receiving member 132, the outwardly convex surface, which contacts the trigger 21, acts as a force relief, allowing the plunger 131 to move in the direction of the first axis under the action of the trigger 21. This prevents deflection of the plunger 131 due to differences in the direction of the force applied, resulting in a more reliable engagement between the plunger 131 and the valve body, and a more reliable sealing performance for the fluid valve 10.

[0042] In this embodiment, the force-bearing member 132 is formed as a screw, which is threadedly connected to the plunger 131. The head 1322 of the screw is configured to be hemispherical, i.e., the convex curved surface is provided on the screw head 1322. The plunger 131 is provided with a connecting hole 1311 extending along the first axis, and the shaft 1321 of the screw is threadedly connected to the connecting hole 1311. In this way, when the cleaning device product model is different, in order to better accommodate the different assembly spaces in the cleaning device product, the force-bearing member 132 can be directly replaced, thereby ensuring a reliable fit between the trigger 21 and the fluid valve 10. Replacing the entire fluid valve 10 improves the versatility of the fluid valve 10, greatly reducing production costs, and further ensuring a more reliable fit between the trigger 21 and the plunger 131. To facilitate replacement of the force-bearing member 132, the head 1322 of the screw is provided with a cross slot or a slotted groove to facilitate removal and installation of the force-bearing member 132.

[0043] In an optional embodiment, the force-bearing member 132 can also be set to other structures. As an example, the force-bearing member 132 includes a sleeve and an abutment portion connected to the sleeve, the abutment portion is provided at one end away from the plunger 131, and the convex curved surface is provided on the abutment portion. An annular step groove is provided on the outer peripheral edge of the plunger 131, and mutually cooperating threaded structures are provided on the outer peripheral wall of the annular step groove and the inner peripheral wall of the sleeve. In this way, the force-bearing member 132 can be more conveniently disassembled and installed with the plunger 131. Alternatively, the force-bearing member 132 and the plunger 131 can also be fixed by magnetic attraction. Therefore, this embodiment does not make a specific limitation on the matching structure between the force-bearing member 132 and the plunger 131, as long as it can achieve more convenient disassembly and installation between the force-bearing member 132 and the plunger 131.

[0044] In this embodiment, the diameter of the screw head 1322 is smaller than the diameter of the plunger 131, that is, the edge of the screw head 1322 does not exceed the edge of the plunger 131. This makes the structure of the fluid valve 10 more compact and reduces the installation space required for assembling the fluid valve 10.

[0045] A gasket 134 is disposed between the screw head 1322 and the end face of the plunger 131. The diameter of the gasket 134 is larger than the diameter of the plunger 131, i.e., the outer periphery of the gasket 134 extends beyond the outer edge of the plunger 131. A compression spring 135 is sleeved on the plunger 131. One end of the compression spring 135 abuts against the second valve body 12, and the other end abuts against the gasket 134.

[0046] When the trigger 21 is not triggered, that is, when the plunger 131 is in the second position, the compression spring 135 presses against the plunger 131 through the gasket 134, maintaining the plunger 131 in the second position. At this time, the compression spring 135 is compressed and has a certain amount of compressible space. Under the pressure of the compression spring 135, the sealing ring 133 can fit more tightly against the flow opening 122, improving the sealing effect of the flow valve.

[0047] When the trigger 21 on the cleaning device is triggered, the plunger 131 is moved to the first position by the trigger 21, and the compression spring 135 is compressed by the gasket 134, creating a flow gap between the sealing ring 133 and the flow port 122, allowing the fluid to flow through this flow gap to the liquid outlet channel. When the trigger 21 on the cleaning device is no longer triggered, the compression spring 135 presses against the gasket 134, causing the plunger 131 to return from the first position to the second position, closing the fluid channel. The fluid valve 10 of the present invention can quickly and accurately close and open the fluid, is easy to operate, and has a good sealing effect.

[0048] To stabilize the movement of the plunger 131 in the direction of the first axis, a limit seat 113 is provided on the first valve body 11. The limit seat 113 is provided with a guide hole 1131. A guide post 1312 is provided at one end of the plunger 131 located within the valve cavity 111, and slidably engages with the guide hole 1131. When the plunger 131 moves in the direction of the first axis, the guide post 1312 cooperates with the guide hole 1131 to guide and limit the plunger 131, ensuring its movement in the direction of the first axis. A slot 1313 is also provided at one end of the plunger 131 located within the valve cavity 111, matching the shape of the limit seat 113.

[0049] An embodiment of the present invention provides a cleaning device, referring to Figure 3 , including a body 30, a cleaning assembly 40 connected to the body 30, the cleaning assembly 40 includes a handle 41, a cleaning nozzle 42, the above-mentioned fluid valve 10 is arranged in the handle 41, and the trigger 21 is also arranged on the handle 41, and the trigger 21 cooperates with the fluid valve 10.

[0050] The body 30 and the handle 41 are connected by a hose 44, which can be a corrugated tube. Other branch pipes, such as a liquid supply pipe and a dust collection pipe, can be provided in the hose 44. The handle 41 is connected to the cleaning nozzle 42 by a hard pipe 45. Dust and the like absorbed by the cleaning nozzle 42 are transferred to the handle 41 through the hard pipe 45. The handle 41 is also provided with a passage for dust to pass through and connected to the dust collection pipe. The dust then enters the dust collection pipe and is finally collected in the dust collection chamber of the cleaning device.

[0051] For example, a liquid storage tank (not shown) for supplying liquid is provided within the body 30. The liquid storage tank is connected to the liquid inlet channel of the fluid valve 10 via a liquid supply pipe. A nozzle 43 is provided on the cleaning nozzle head 42, which is connected to the fluid channel. Specifically, a flow guide pipe can be provided to connect the fluid channel and the nozzle 43. When the fluid channel in the fluid valve 10 is in an open state, the fluid valve 10 can supply liquid to the nozzle 43.

[0052] Reference Figure 5 and Figure 6 The handle 41 includes a handle body 411 and two housings connected to the handle body 411. The two housings include a first housing 412 and a second housing 413. The shapes and structures of the first housing 412 and the second housing 413 are generally symmetrical. The first housing 412 and the second housing 413 enclose a cavity 415 for mounting the fluid valve 10, with the convex curved surface located outside the cavity 415. A rotation axis hole 414 is formed between the first housing 412 and the second housing 413. The trigger 21 is connected to the rotation axis 211. The trigger 21 is rotatably connected to the rotation axis hole 414 via the rotation axis 211. At least a portion of the convex curved surface is located in the rotation path of the trigger 21.

[0053] The first shell 412 and the second shell 413 may be an integrally formed structure, and the first shell 412 and the second shell 413 may be fixed by screws for easy assembly.

[0054] Reference Figure 7 and Figure 8 When the nozzle 43 is required to spray liquid, the trigger 21 is pressed and the trigger 21 moves along Figure 8 When the trigger 21 moves in the direction of arrow b, it rotates and presses against the convex surface of the force-bearing member 132, causing the force-bearing member 132 to move the plunger 131 in the direction of the first axis. At this time, the gasket 134 applies force to the compression spring 135, compressing the compression spring 135 and moving the plunger 131 from the second position to the first position. The fluid passage also changes from a blocked state to a conductive state, allowing the fluid valve 10 to supply liquid to the nozzle 43. When liquid spraying is not required, the trigger 21 is not pulled, and the compression spring 135, under the action of its own elastic potential energy, presses against the gasket 134, causing the plunger 131 to move from the first position to the second position. The sealing ring 133 can then seal with the flow opening 122, closing the fluid passage.

[0055] A friction-reducing plate 22 is provided on the trigger 21 at the position where the force-bearing member 132 contacts the trigger 21. For example, the inner wall of the trigger 21 is recessed downward to form a mounting groove, into which the friction-reducing plate 22 is mounted. The position of the mounting groove corresponds to the position of the force-bearing member 132. This reduces wear between the trigger 21 and the force-bearing member 132 when the trigger 21 is triggered, thereby ensuring its service life.

[0056] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the scope of implementation of the present invention is not limited to what is shown in the drawings. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which do not exceed the spirit covered by the description and drawings, should be within the scope of protection of the present invention.

Claims

1. A fluid valve for a cleaning device, comprising a fluid passage and a plunger assembly, wherein the plunger assembly is configured to be driven by a trigger of the cleaning device to move in the direction of a first axis to open or close the fluid passage, wherein: The plunger assembly comprises: a plunger, which opens the fluid channel when the plunger is in a first position in the direction of the first axis, and closes the fluid channel when the plunger is in a second position in the direction of the first axis; A force-bearing member is detachably mounted on the plunger and is configured to be abutted by the trigger when the trigger is triggered, so as to drive the plunger to move in the direction of the first axis, wherein at least a portion of an end face of the force-bearing member is an outwardly convex surface, and the trigger abuts the force-bearing member on the outwardly convex surface.

2. The fluid valve according to claim 1, wherein: The force-bearing member is formed as a screw, the screw is threadedly connected to the plunger, and the head of the screw has the convex curved surface.

3. The fluid valve according to claim 2, wherein: The plunger is provided with a connecting hole extending along the first axis, and the screw is threadedly connected to the connecting hole.

4. The fluid valve according to claim 2, wherein: The diameter of the head of the screw is smaller than the diameter of the plunger.

5. The fluid valve according to claim 2, wherein: The fluid valve further includes a first valve body and a second valve body connected to each other, wherein a valve cavity is defined within the first valve body, the first valve body is provided with a liquid inlet flow channel, the valve cavity is communicated with the liquid inlet flow channel, and the second valve body is provided with a liquid outlet flow channel and a flow port; A sealing ring is provided on the plunger. When the plunger is in the first position, the sealing ring is in sealing cooperation with the flow opening.

6. The fluid valve according to claim 5, characterized in that: A gasket is provided between the head of the screw and the end surface of the plunger, wherein the diameter of the gasket is larger than the diameter of the plunger; A compression spring is sleeved on the plunger, one end of the compression spring abuts against the second valve body, and the other end abuts against the gasket. When the trigger is not triggered, the compression spring presses against the plunger through the gasket to keep the plunger in the second position. When the trigger is triggered, the plunger is moved to the second position by the trigger while compressing the compression spring through the gasket.

7. The fluid valve according to claim 5, characterized in that: A limit seat is provided on the first valve body, a guide hole is provided on the limit seat, and a guide column is provided at one end of the plunger located in the valve cavity and slidingly matched with the guide hole.

8. A cleaning device comprising a body and a cleaning assembly connected to the body, characterized in that: The cleaning component comprises a fluid valve as described in any one of claims 1 to 7, wherein the cleaning component comprises a handle and a cleaning nozzle, the fluid valve and the trigger are arranged on the handle, and the cleaning nozzle is provided with a nozzle connected to the fluid channel.

9. The cleaning device according to claim 8, characterized in that: The handle includes a handle body and two shells connected to the handle body. The two shells enclose a cavity for installing the fluid valve. The trigger is rotatably connected to the two shells. The convex surface is located outside the cavity, and at least part of the convex surface is located on the rotation path of the trigger.

10. The cleaning device according to claim 8 or 9, characterized in that: A wear-reducing plate is provided between the contact position between the trigger and the force-bearing member.

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