Float valve device and water tank device

Abstract

The present invention discloses a float valve device and a water tank device, the float valve device comprises: a valve component, a float and a rod component, the valve component comprises: a water inlet; a water outlet; a first chamber connected to the water inlet; a second chamber connected to the water outlet; a first valve core mechanism used to control the on-off of the first chamber and the second chamber; a third chamber directly or indirectly connected to the water inlet so as to separate the first chamber from the second chamber by applying pressure to the first valve core mechanism through pressurized water guided from the water inlet; a control flow channel connected between the water outlet and the third chamber; a second valve core mechanism used to control the on-off of the control flow channel; wherein: the float drives the second valve core mechanism through the rod component to control the on-off of the control flow channel.

Description

Technical Field

[0001] The invention relates to the technical field of water purification, and in particular to a float valve device and a water tank device. Background Art

[0002] In the field of water purification technology, a float valve is usually used to control the liquid level of a water tank so that an external water source can simultaneously supply water to the water tank while water is being taken from the water tank, thereby ensuring that a fixed amount of water is always stored in the water tank.

[0003] The float valve in the prior art usually includes a float that senses the liquid level in the water tank and a valve component that controls the water supply to the water tank; the valve component has a water inlet, a water outlet and a valve core located between the water inlet and the water outlet, and the water inlet is connected to a water source; the float is linked to the valve core in the valve component by a rod component (such as a connecting rod), and when the liquid level drops and the float moves down, the valve core is controlled to open by the rod component to connect the water inlet and the water outlet, thereby allowing external water to enter from the water inlet and flow out from the water outlet to supply water to the water tank, and when the liquid level rises to a certain height, the float moves up and controls the valve core to close by the rod component, thereby cutting off the water inlet and the water outlet, thereby controlling the water source to stop supplying water to the water tank.

[0004] Although the above-mentioned float valve can control the water source to supply water to the water tank, the float of the above-mentioned float valve directly controls the valve core through the rod component, which leads to the following defects: the amount of water entering is difficult to obtain accurate control.

[0005] In order to overcome the above-mentioned defects, a float valve has appeared in the prior art. The float valve uses water pressure to control the opening and closing of the valve core. Specifically, a control channel is set in the valve component. The control channel can guide pressurized water from the water source to apply pressure to the valve core, and the control channel forms a port on the outside of the valve component. The opening and closing of the port is controlled by the rod component connected to the float. When the port is opened, the control channel releases pressure to release the pressure of the valve core and the valve core opens. After the port is closed, the control channel is connected to the pressure water source and the pressure is re-established, and then the valve core is re-pressurized to close the valve core. In this way, the valve core can be controlled by opening and closing the control channel, and the amount of water entering can be controlled more accurately.

[0006] However, the float valve of the above structure has the following defects:

[0007] After the rod component opens the port of the control flow channel, part of the water from the water source will also flow out from the port, which requires that the valve component as a whole needs to be assembled inside the water tank, which is bound to be unfavorable for cleaning the valve component.

[0008] In addition, in order to reduce the flow rate of water flowing out of the port of the control flow channel, the port is usually set smaller, and because the port is located above the liquid surface, it is easy to contact with the air, which easily causes scaling of the port, thereby increasing the possibility of port blockage. Summary of the invention

[0009] In view of the above technical problems existing in the prior art, an embodiment of the present invention provides a float valve device and a water tank device.

[0010] In order to solve the above technical problems, the technical solution adopted in the embodiments of the present invention is:

[0011] A floating ball valve device comprises: a valve component, a float and a rod component, wherein the valve component comprises:

[0012] Water inlet;

[0013] Water outlet;

[0014] a first chamber, which is in communication with the water inlet;

[0015] a second chamber, which is in communication with the water outlet;

[0016] A first valve core mechanism, which is used to control the opening and closing of the first chamber and the second chamber;

[0017] a third chamber, which is directly or indirectly connected to the water inlet so that the first chamber is isolated from the second chamber by applying pressure to the first valve core mechanism through pressurized water guided from the water inlet;

[0018] a control flow channel connected between the water outlet and the third chamber;

[0019] The second valve core mechanism is used to control the on-off of the control flow channel; wherein:

[0020] The float drives the second valve core mechanism via the rod member to control the on / off state of the control flow channel.

[0021] Preferably, a cylinder is formed inside the valve component, the first chamber is an annular chamber formed on the outside of the cylinder and a columnar chamber inside the cylinder, and the second chamber is a columnar chamber formed inside the cylinder; the first valve core mechanism controls the connection and disconnection of the first chamber and the second chamber by opening or closing the port of the cylinder.

[0022] Preferably, the first valve core mechanism comprises:

[0023] an elastic membrane, which is sealed with the edge of the first chamber;

[0024] A valve plate is disposed on the elastic membrane and opposite to the cylinder; wherein:

[0025] The valve plate blocks the port of the cylinder with a certain pre-tightening force by means of the pressurized water in the third chamber.

[0026] Preferably, the third chamber is separated from the first chamber and the second chamber by the elastic membrane; wherein:

[0027] A flow hole is formed in the elastic membrane in a region corresponding to the first chamber, so that part of the water entering the first chamber from the water inlet is guided to the third chamber through the flow hole.

[0028] Preferably, the port of the barrel is lower than the port of the first chamber.

[0029] Preferably, the control flow channel comprises a guide section and a control section; the second valve core mechanism is used to control the on-off of the control section.

[0030] Preferably, the control section is a straight cavity end; the second valve core mechanism comprises:

[0031] A valve seat, which is mounted on the linear cavity section, and a valve hole is formed on the valve seat;

[0032] a core body disposed at the valve hole to open or close the valve hole by linear movement;

[0033] a valve stem, one end of which is connected to the core body and the other end of which extends out of the valve member;

[0034] A spring is used to apply force to the core in a direction to close the valve hole; wherein:

[0035] The float drives the valve stem via the rod member to open the valve hole.

[0036] Preferably, the straight cavity segment is located outside the first cavity and is consistent with the axial direction of the first cavity.

[0037] Preferably, the valve component further comprises a valve body and a valve cover; the first chamber and the second chamber are formed in the valve body, the valve cover has an inner recess, and the inner recess and the valve body enclose the third chamber.

[0038] Preferably, the guide section is formed on the valve cover, and the control section is formed in the valve body.

[0039] Preferably, a plug is formed at the end of the guide section, and the plug is used to be inserted into the port of the control section and is sealed by a sealing ring.

[0040] Preferably, the spring is interposed between the plug and the core.

[0041] Preferably, the rod component comprises a connecting rod, the connecting rod is pivotally connected to the valve body, the float is provided with a vertical shift rod, the upper end of the vertical shift rod is connected to the tail of the connecting rod, and the head of the connecting rod is opposite to the valve stem;

[0042] The vertical moving rod passes through the tank cover of the water tank.

[0043] Preferably, the water inlet is connected to a water inlet hole pre-opened on a tank cover of the water tank via a pipeline.

[0044] Preferably, the lower end of the control section passes through the valve body, a blocking cover is installed at the lower end of the control section, and the valve stem passes through the blocking cover.

[0045] The present invention also provides a water tank device, comprising a water tank and the above-mentioned float valve device.

[0046] Compared with the prior art, the float valve device and water tank device disclosed in the present invention have the following beneficial effects:

[0047] 1. By connecting the control channel with the water outlet of the valve component, the water passing through the control channel flows out from the water outlet, thereby avoiding the appearance of a port on the outside of the valve component that controls the opening and closing of the control channel. Therefore, the valve component can be arranged on the top of the water tank, such as above the tank cover, and the water outlet is connected to the water inlet of the water tank through a pipeline. By arranging the valve component outside the water tank, it is possible to avoid cleaning the valve component and facilitate tilting the valve component.

[0048] 2. Since the control flow channel is located inside the valve component, the possibility of the control flow channel contacting the air is small, so there will be no situation where the port is blocked due to scaling as in the prior art.

[0049] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.

[0050] This summary of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The accompanying drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the embodiments of the invention. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

[0052] Figure 1 A schematic structural diagram of a float valve device provided in an embodiment of the present invention (the first chamber and the second chamber are in a cut-off state).

[0053] Figure 2 This is a schematic structural diagram of a float valve device provided in an embodiment of the present invention (the first chamber and the second chamber are in a connected state).

[0054] Reference numerals:

[0055] 10-valve component; 11-first chamber; 12-second chamber; 13-third chamber; 14-cylinder; 15-control flow channel; 151-guide section; 152-control section; 16-first valve core mechanism; 161-elastic membrane; 162-valve plate; 163-flow hole; 17-second valve core mechanism; 171-core body; 172-valve seat; 173-valve stem; 174-spring; 175-blocking cover; 181-water inlet; 182-water outlet; 191-valve body; 192-valve cover; 1921-plug; 20-float; 21-vertical displacement rod; 22-bushing; 30-rod component; 40-boosting spring; 50-pipeline; 100-box cover; 101-water inlet. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0058] In order to keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and well-known components are omitted.

[0059] like Figure 1 and Figure 2As shown, an embodiment of the present invention discloses a float valve device, which includes: a valve component 10 , a float 20 and a rod component 30 .

[0060] The valve member 10 includes a water inlet 181 , a water outlet 182 , a first chamber 11 , a second chamber 12 , a third chamber 13 , a control flow passage 15 , a first valve core mechanism 16 , and a second valve core mechanism 17 .

[0061] The first chamber 11, the second chamber 12 and the third chamber 13 are formed inside the valve component 10; an external water source (such as tap water provided by a water pipe) is connected to the water inlet 181 of the valve component 10, and the water inlet 181 is connected to the first chamber 11, and the water outlet 182 of the valve component 10 is connected to the second chamber 12, and the water outlet 182 is used to fill water into the water tank.

[0062] The third chamber 13 is also directly or indirectly connected to an external water source so that pressurized water provided by the external water source can enter the third chamber 13 .

[0063] In the present invention, one end of the control flow channel 15 is connected to the third chamber 13, and the other end is connected to the inner end of the water outlet 182 (it is easy to understand that the inner end of the water outlet 182 is located inside the valve part). Figure 2 As shown, under the premise that the control flow channel 15 is not cut off, the water in the third chamber 13 can flow to the water outlet 182 of the valve member 10 through the control flow channel 15, and finally flow into the water tank, as shown in FIG. Figure 1 As shown, if the control channel 15 is cut off, the water in the third chamber 13 cannot flow out through the control channel 15, and because the third chamber 13 is connected to the external water source, a pressure substantially consistent with that of the external water source is established in the third chamber 13.

[0064] The first valve core mechanism 16 is used to control the on-off of the first chamber 11 and the second chamber 12, and the first valve core mechanism 16 is actuated by the water pressure in the third chamber 13 to control the on-off of the first chamber 11 and the second chamber 12. Specifically, Figure 1 As shown, after the control flow channel 15 is cut off, the water pressure established in the third chamber 13 drives the first valve core mechanism 16 to cut off the first chamber 11 and the second chamber 12; Figure 2 As shown, after the control flow channel 15 is opened, the water in the third chamber 13 flows into the water outlet 182 of the valve component 10, the water pressure in the third chamber 13 is canceled or greatly reduced, and the pressure applied to the first valve core mechanism 16 is canceled or greatly reduced. At this time, the first valve core mechanism 16 reverses and connects the first chamber 11 with the second chamber 12.

[0065] The second valve core mechanism 17 is used to control the on-off of the control channel 15, and the float 20 is associated with the second valve core mechanism 17 through the rod member 30. Specifically, Figure 2 As shown in FIG. 1 , when the float 20 moves downward, the float 20 drives the second valve core mechanism 17 to operate through the rod member 30 to open the control flow channel 15, as shown in FIG. Figure 1 As shown, when the float 20 moves upward, the second valve core mechanism 17 acts in the reverse direction to close the control flow channel 15.

[0066] Based on the above structure, we can know that:

[0067] like Figure 2 As shown, when the user receives water from the water tank, the liquid level in the water tank drops, and the float 20 moves downward synchronously to drive the second valve core mechanism 17 to open the control channel 15. At this time, the water in the third chamber 13 passes through the control channel 15 and enters the water outlet 182 of the valve component 10. The water pressure in the third chamber 13 decreases or disappears, and the first valve core mechanism 16 connects the first chamber 11 with the second chamber 12. The water provided by the water source passes through the water inlet 181 of the valve component 10, the first chamber 11, the second chamber 12, and the water outlet 182 in sequence, and then is injected into the water tank.

[0068] like Figure 1 As shown, after the user stops drawing water from the water tank, the liquid level in the water tank rises, and the float 20 moves up synchronously to release the drive on the second valve core mechanism 17. The second valve core mechanism 17 closes the control flow channel 15. At this time, part of the water in the water source enters the third chamber 13 to re-establish the water pressure, thereby forcing the first valve core mechanism 16 to cut off the first chamber 11 and the second chamber 12 again. The water provided by the water source cannot enter the second chamber 12, and therefore, the water outlet 182 of the valve component 10 stops filling the water tank with water.

[0069] Compared with the on-off method of the control channel 15 mentioned in the background technology, the present invention connects the control channel 15 with the water outlet 182 of the valve component 10 inside the valve component 10, so that the water passing through the control channel 15 flows out through the water outlet 182, thereby avoiding opening a separate port outside the valve component 10 and causing the water in the control channel 15 to flow out from the port. Another aspect of the present invention is that the float 20 controls the on-off of the control channel 15 by means of the second valve core mechanism 17 instead of directly controlling the on-off of the control channel 15 by blocking the port.

[0070] The advantages of the float valve device provided by the above embodiment of the present invention are:

[0071] 1. By connecting the control channel 15 with the water outlet 182 of the valve member 10, the water passing through the control channel 15 flows out from the water outlet 182, thereby avoiding the appearance of a port for controlling the opening and closing of the control channel 15 outside the valve member 10. Therefore, the valve member 10 can be arranged on the top of the water tank, such as above the tank cover 100, and the water outlet 182 is connected to the water inlet 101 of the water tank through the pipeline 50. By arranging the valve member 10 outside the water tank, it is possible to avoid cleaning the valve member 10 and facilitate tilting the valve member 10.

[0072] 2. Since the control flow channel 15 is located inside the valve component 10, the control flow channel 15 is less likely to come into contact with the air, so there will be no blockage caused by scaling of the port as in the prior art.

[0073] In some preferred embodiments, a cylinder 14 is formed inside the valve member 10, the first chamber 11 is an annular chamber formed outside the cylinder 14, the second chamber 12 is a columnar chamber formed inside the cylinder 14, and the upper end of the cylinder 14 is lower than the upper end of the first chamber 11. The first valve core mechanism 16 includes an elastic membrane 161 and a valve plate 162. The edge of the elastic membrane 161 is sealed and connected to the edge of the upper end of the first chamber 11 through a sealing material or a sealing structure; the valve plate 162 is arranged on the elastic membrane 161 and is opposite to the cylinder 14, and the radial dimension of the valve plate 162 is slightly larger than the radial dimension of the cylinder 14, so that the valve plate 162 can block the upper port of the cylinder 14 by moving. The third chamber 13 is located above the elastic membrane 161.

[0074] In this embodiment, a flow hole 163 is provided on the annular area corresponding to the elastic membrane 161 and the first chamber 11, and the flow hole 163 enables the first chamber 11 to communicate with the third chamber 13, so that the third chamber 13 is connected to the water source through the flow hole 163 and the first chamber 11, and can obtain pressurized water provided by the water source. In addition, the flow cross section of the flow hole 163 is smaller than the flow cross section when the control flow channel 15 is opened.

[0075] Based on the above structure, we can know that:

[0076] like Figure 2As shown, when the liquid level of the water tank drops and the float 20 controls the second valve core mechanism 17 to open the control flow channel 15, the water in the third chamber 13 flows to the water outlet 182 through the control flow channel 15. Although the water in the first chamber 11 partially enters the third chamber 13 through the flow hole 163, the flow rate of water flowing out of the third chamber 13 is much greater than the flow rate of water entering the third chamber 13. Therefore, the water pressure in the third chamber 13 is extremely small. Since the first chamber 11 is connected to the water source, the first chamber 13 is The total pressure F2 of the water in the chamber 11 on the elastic membrane 161 is much greater than the total pressure F1 of the water in the third chamber 13 on the elastic membrane 161, thereby forcing the elastic membrane 161 to deform toward the third chamber 13. The deformation of the elastic membrane 161 will cause the valve plate 162 to move upward and open the upper end of the cylinder 14, thereby connecting the first chamber 11 with the second chamber 12, and allowing the water in the water source to pass through the first chamber 11 and enter the second chamber 12, and finally flow out from the water outlet 182 of the valve component 10.

[0077] like Figure 1 As shown, when the liquid level in the water tank rises and the second valve core mechanism 17 closes the control flow channel 15, the water in the first chamber 11 continues to enter the third chamber 13 through the flow hole 163, and finally the water pressure in the third chamber 13 is equal to the water pressure in the first chamber 11, while the second chamber 12 has no water pressure because it is connected to the water outlet 182. The total pressure F2 of the water in the third chamber 13 on the elastic membrane 161 and the valve plate 162 is greater than the total pressure F1 of the first chamber 11 on the elastic membrane 161, so that the valve plate 162 blocks the upper port of the cylinder 14 with a certain pre-tightening force, thereby isolating the first chamber 11 from the second chamber 12.

[0078] The advantages of the above embodiments provided by the present invention are:

[0079] 1. The first chamber 11 and the second chamber 12 are correspondingly arranged as an annular chamber and a columnar chamber, and the elastic mold and the valve plate 162 cooperate to block the cylinder 14 and the pressure difference formed by the third chamber 13 and the first chamber 11, so that the port of the cylinder 14 is opened or closed, thereby controlling the on-off of the entire valve component 10, which is a clever design.

[0080] 2. By opening a flow hole 163 on the elastic membrane 161 to connect the first chamber 11 with the third chamber 13, pressurized water can be obtained from the water source through the first chamber 11, and by making the flow cross-section of the flow hole 163 smaller than the flow cross-section when the control channel 15 is opened, the control channel 15 can obtain a pressure difference between the first chamber 11 and the third chamber 13 when it is opened, thereby avoiding the need to open another channel to connect the water source with the third chamber 13, thereby making the internal structure of the valve component 10 simpler.

[0081] In some preferred embodiments, the valve component 10 is assembled from two solid components, a valve body 191 and a valve cover 192. The above-mentioned cylinder 14 and the first chamber 11 and the second chamber 12 divided by the cylinder 14 are formed in the valve body 191. The valve cover 192 is buckled on the valve body 191. The valve cover 192 has an inner recess, which makes the valve cover 192 and the valve body 191 enclose a third chamber 13.

[0082] The control flow channel 15 includes two sections, one section is a guide section 151, and the other section is a control section 152. The second valve core mechanism 17 is used to control the on and off of the control section 152. The guide section 151 is formed on the valve cover 192, and the control section 152 is formed on the valve body 191 and is located outside the first chamber 11, so that the control section 152 is set as a straight cavity section. The valve cover 192 is formed with a plug 1921 in the area opposite to the upper end of the straight cavity section, and the guide section 151 passes through to the end of the plug 1921. The plug 1921 is inserted into the upper port of the control section 152 and sealed by a sealing ring.

[0083] The lower end of the control section 152 passes through the valve body 191, and a blocking cover 175 is installed at the lower end of the control section 152. The second valve core mechanism 17 includes: a valve seat 172, a core body 171, a valve cover 192 and a spring 174; the valve seat 172 is installed on the upper part of the control section 152 by using a retaining ring, and a through valve hole is opened on the valve seat 172; the core body 171 is provided with a valve hole to open or close the valve hole by linear movement; the spring 174 is interposed between the core body 171 and the plug 1921 to push the valve core downward to make the valve core block the valve hole.

[0084] A section of the valve stem 173 is connected to the core body 171, and the other end of the valve cover 192 extends out of the sealing cover 175 to protrude from the valve body 191, and a sealing ring is arranged between the valve stem 173 and the sealing cover 175; the rod component 30 is a connecting rod, which is pivotally connected to the bottom of the valve body 191, and a vertical shift rod 21 is arranged on the float 20, and the vertical shift rod 21 passes through a bushing 22 installed on the box cover 100, and the upper end of the vertical shift rod 21 is connected to the tail of the connecting rod, and the head of the connecting rod is opposite to the valve stem 173, and an auxiliary spring 40 is also arranged between the connecting rod and the valve body 191.

[0085] like Figure 2 As shown, when the liquid level in the water tank drops and the float 20 moves downward, the float 20 drives the connecting rod to pivot through the vertical displacement rod 21 so that the connecting rod pushes the valve stem 173 upward, thereby causing the core 171 to open the valve hole and thereby opening the control channel 15.

[0086] like Figure 1 As shown, when the liquid level in the water tank rises and the float 20 moves upward, the float 20 drives the connecting rod to pivot in the opposite direction through the vertical displacement rod 21. At this time, the spring 174 of the second valve core mechanism 17 pushes downward against the core body 171 to close the valve hole, thereby closing the control channel 15.

[0087] The advantages of the above embodiments provided by the present invention are:

[0088] The second valve core mechanism 17 forms a linkage with the float 20 by means of the valve stem 173 extending out of the valve body 191 , thereby controlling the on-off of the control channel 15 , which is an ingenious design.

[0089] The present invention also provides a water tank device, including a water tank and the above-mentioned float valve device, wherein the valve component 10 in the float valve device can be arranged above the water tank to avoid cleaning or facilitate cleaning of the valve component 10.

[0090] In addition, although exemplary embodiments have been described in the present invention, the scope includes any and all embodiments based on the present invention with equivalent elements, modifications, omissions, combinations (e.g., various embodiments intersecting schemes), adaptations or changes. The elements in the claims will be interpreted broadly based on the language adopted in the claims, and are not limited to the examples described in this specification or during the implementation of this application, and their examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered as examples only, and the true scope and spirit are indicated by the following claims and the full scope of their equivalents.

[0091] The above description is intended to be illustrative rather than restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. For example, a person of ordinary skill in the art can use other embodiments when reading the above description. In addition, in the above-mentioned specific embodiments, various features can be grouped together to simplify the present invention. This should not be interpreted as an intention that a disclosed feature that is not required to be protected is necessary for any claim. On the contrary, the subject matter of the present invention may be less than all the features of a specific disclosed embodiment. Thus, the following claims are incorporated into the specific embodiments as examples or embodiments, wherein each claim is independently used as a separate embodiment, and it is considered that these embodiments can be combined with each other in various combinations or arrangements. The scope of the present invention should be determined with reference to the attached claims and the full scope of equivalent forms granted by these claims.

[0092] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A float valve device, comprising: A valve component, a float and a rod component, wherein the valve component comprises: Water inlet; Water outlet; a first chamber, which is in communication with the water inlet; a second chamber, which is in communication with the water outlet; A first valve core mechanism, which is used to control the opening and closing of the first chamber and the second chamber; a third chamber, which is directly or indirectly connected to the water inlet so that the first chamber is isolated from the second chamber by applying pressure to the first valve core mechanism through pressurized water guided from the water inlet; a control flow channel connected between the water outlet and the third chamber; The second valve core mechanism is used to control the on-off of the control flow channel; wherein: The float drives the second valve core mechanism through the rod component to control the on-off of the control flow channel; A cylinder is formed inside the valve component; The first valve core mechanism comprises: an elastic membrane, which is sealed with the edge of the first chamber; A valve plate is disposed on the elastic membrane and opposite to the cylinder; wherein: The valve plate blocks the port of the cylinder with a certain pre-tightening force by means of the pressurized water in the third chamber; The third chamber is separated from the first chamber and the second chamber by the elastic membrane; wherein: A flow hole is provided in the area of ​​the elastic membrane corresponding to the first chamber, so that part of the water entering the first chamber from the water inlet is guided to the third chamber through the flow hole; The second valve core mechanism comprises: A valve seat having a valve hole formed thereon; a core body disposed at the valve hole to open or close the valve hole by linear movement; a valve stem, one end of which is connected to the core body and the other end of which extends out of the valve member; A spring is used to apply force to the core in a direction to close the valve hole; wherein: The float drives the valve stem via the rod member to open the valve hole.

2. The float valve device according to claim 1, characterized in that: The first chamber is an annular chamber formed outside the cylinder, and the second chamber is a columnar chamber formed inside the cylinder; the first valve core mechanism controls the connection and disconnection of the first chamber and the second chamber by opening or closing the port of the cylinder.

3. The float valve device according to claim 1, characterized in that: The port of the barrel is lower than the port of the first chamber.

4. The float valve device according to claim 1, characterized in that: The control flow channel includes a guide section and a control section; the second valve core mechanism is used to control the on-off of the control section.

5. The float valve device according to claim 4, characterized in that: The control section is a straight cavity section; the valve seat is installed in the straight cavity section.

6. The float valve device according to claim 5, characterized in that: The straight cavity segment is located outside the first cavity and is consistent with the axial direction of the first cavity.

7. The float valve device according to claim 4, characterized in that: The valve component further includes a valve body and a valve cover; the first chamber and the second chamber are formed in the valve body, and the valve cover has an inner recess, and the inner recess and the valve body enclose the third chamber.

8. The float valve device according to claim 7, characterized in that: The guide section is formed on the valve cover, and the control section is formed in the valve body.

9. The float valve device according to claim 8, characterized in that: A plug is formed at the end of the guide section, and the plug is used to be inserted into the port of the control section and is sealed by a sealing ring.

10. The float valve device according to claim 9, characterized in that: The spring is interposed between the plug and the core.

11. The float valve device according to claim 7, characterized in that: The rod component includes a connecting rod, the connecting rod is pivotally connected to the valve body, the float is provided with a vertical moving rod, the upper end of the vertical moving rod is connected to the tail of the connecting rod, and the head of the connecting rod is opposite to the valve stem; The vertical moving rod passes through the tank cover of the water tank.

12. The float valve device according to claim 1, characterized in that: The water inlet is connected to a water inlet hole pre-opened on a tank cover of the water tank through a pipeline.

13. The float valve device according to claim 7, characterized in that: The lower end of the control section passes through the valve body, a blocking cover is installed at the lower end of the control section, and the valve stem passes through the blocking cover.

14. A water tank device, comprising a water tank, characterized in that: It also comprises a float valve device as claimed in any one of claims 1 to 13.

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