A proportional valve

Abstract

The present invention provides a proportional valve, which includes a proportional valve body having a water inlet and a water outlet, and further includes: an outlet joint detachably arranged at the water outlet end of the proportional valve body; a first clamping mechanism arranged between the proportional valve body and the outlet joint and used for connecting the two; an inlet joint detachably arranged at the water inlet end of the proportional valve body; a second clamping mechanism arranged between the proportional valve body and the inlet joint and used for connecting the two; a blocking mechanism including a second spring arranged in the inlet joint, one end of the second spring is connected to a sealing ball for blocking the water inlet, and the other end is connected to the inlet joint; when the second clamping mechanism connects the proportional valve body and the inlet joint, the sealing ball is away from the water inlet; when the second clamping mechanism does not connect the proportional valve body and the inlet joint, the sealing ball blocks the water inlet. When the proportional valve body of the present invention is disassembled and repaired, it is not necessary to close the main valve of the water pipe, making the repair more convenient and improving the repair efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and particularly relates to a proportional valve. Background Art

[0002] A proportional valve is a new type of hydraulic control device. On ordinary pressure valves, flow valves and directional valves, a proportional electromagnet is used to replace the original control part, and the pressure, flow or direction of the oil flow is continuously and proportionally controlled remotely according to the input electrical signal. Existing proportional valves generally consist of a coil, a fixed iron core, a compression spring, a moving iron core, a valve body, etc. Its working principle is that when the coil is not energized, the sealing head of the fixed iron core, under the action of the compression spring and the back pressure of the medium at the valve inlet, closes the valve. When the coil is energized, an electromagnetic force is generated on the end face of the fixed iron core to overcome the reaction force of the compression spring and the back pressure of the medium at the valve inlet, causing the moving iron core to move towards the fixed iron core until the end face of the moving iron core is attracted to the end face of the fixed iron core, and at this time the valve is in the open state.

[0003] In the use of existing proportional valves, once damaged, the entire valve body needs to be disassembled for repair. When disassembling the proportional valve, it is usually necessary to close the main valve of the water pipe connected to the water inlet end of the proportional valve, and then the proportional valve can be disassembled or replaced. However, if the main valve is installed at a position far from the proportional valve, it will seriously affect the replacement or repair efficiency of the proportional valve. Therefore, it is necessary to provide a proportional valve to solve the above existing problems. Summary of the Invention

[0004] In view of this, the present invention provides a proportional valve, which does not need to close the main valve of the water pipe when disassembling and repairing the proportional valve body, making the repair more convenient and improving the repair efficiency.

[0005] To achieve the above object, the proportional valve provided by the present invention adopts the following technical solutions:

[0006] A proportional valve, comprising a proportional valve body, the proportional valve body having a water inlet and a water outlet, characterized in that it further comprises:

[0007] An outlet joint, the outlet joint being detachably arranged at the water outlet end of the proportional valve body;

[0008] A first clamping mechanism, the first clamping mechanism being arranged between the proportional valve body and the outlet joint and used for connecting the proportional valve body and the outlet joint;

[0009] An inlet joint, the inlet joint being detachably arranged at the water inlet end of the proportional valve;

[0010] The second clamping mechanism is arranged between the proportional valve body and the inlet joint and is used to connect the proportional valve body and the inlet joint.

[0011] The blocking mechanism includes a second spring axially arranged in the inlet joint along the axis of the inlet joint. One end of the second spring close to the proportional valve body is connected to a sealing ball, and the sealing ball is used to block the water inlet. The other end of the second spring is fixedly connected to the inlet joint.

[0012] Wherein, the second clamping mechanism is linked with the blocking mechanism. When the second clamping mechanism connects the proportional valve body and the inlet joint, the second spring is compressed and the sealing ball moves away from the water inlet.

[0013] When the second clamping mechanism does not connect the proportional valve body and the inlet joint, the second spring pushes the sealing ball to block the water inlet.

[0014] Further, the outlet joint includes a fixed cylinder, a sliding cylinder, a first spring and a telescopic hose.

[0015] The first spring is axially movably arranged in the fixed cylinder. One end of the first spring is connected to the end of the fixed cylinder. The sliding cylinder is slidably sleeved in the fixed cylinder, and the end of the sliding cylinder abuts against the other end of the first spring. The telescopic hose is arranged in the sliding cylinder and the first spring, and both ends of the telescopic hose are respectively connected to the two ends of the fixed cylinder and the sliding cylinder that are far away from each other.

[0016] Further, a water outlet end sleeve is arranged at the end of the sliding cylinder away from the fixed cylinder. The water outlet end sleeve is slidably sleeved on the water outlet end of the proportional valve body, and a first clamping groove is axially formed in the inner side wall of the water outlet end sleeve along the circumferential direction.

[0017] The first clamping mechanism includes a first rotating handle, a convex plate, a push block, a first connecting rod and a first clamping block.

[0018] The first rotating handle penetrates the side wall of the water outlet end of the proportional valve body radially along the water outlet end of the proportional valve body. The first rotating handle is rotatably connected to the proportional valve body. The convex plate, the push block and the first connecting rod are all located inside the proportional valve body. The convex plate is fixedly connected to the first rotating handle. One end of the push block is hinged to the convex plate, the other end of the push block is hinged to the end of the first connecting rod, and the other end of the first connecting rod is hinged to the first clamping block. The first clamping block movably penetrates the side wall of the water outlet end of the proportional valve body, and the first clamping block is matched with the first clamping groove.

[0019] Further, the inlet joint includes a pipe body. The blocking mechanism is arranged in the pipe body. One end of the pipe body is provided with a water inlet end sleeve. The water inlet end sleeve is slidably sleeved on the water inlet end of the proportional valve body, and a second clamping groove is axially formed in the inner side wall of the water inlet end sleeve along the circumferential direction.

[0020] The second clamping mechanism includes a second rotating handle, a second connecting rod, a second clamping block, a cam and a pushing component;

[0021] The second rotating handle penetrates through the side wall of the water inlet end of the proportional valve body along the radial direction of the water inlet end of the proportional valve body. The second rotating handle is rotatably connected to the proportional valve body. The second connecting rod, the cam and the pushing component are all located inside the proportional valve body. The pushing component is slidably connected to the proportional valve body. The cam is fixedly sleeved on the second rotating handle. The second rotating handle drives the cam to rotate so as to drive the pushing component to slide axially along the water inlet end of the proportional valve body. One end of the second connecting rod is hinged to the pushing component, and the other end of the second connecting rod is hinged to the second clamping block. The second clamping block movably penetrates through the side wall of the water inlet end of the proportional valve body, and the second clamping block cooperates with the second clamping groove.

[0022] Further, a positioning plate is arranged inside the water inlet end of the proportional valve body. The pushing component includes a push rod slidably connected to the positioning plate. The push rod slides axially along the water inlet end of the proportional valve body. A return spring is arranged between the push rod and the positioning plate.

[0023] Further, a filtering mechanism is detachably arranged at the water inlet end of the proportional valve body, and the filtering mechanism cooperates with the cam;

[0024] When the filtering mechanism is installed, the cam is forced to drive the pushing component to slide so that the second spring is compressed, and the sealing ball moves away from the water inlet;

[0025] When the filtering mechanism is removed, the second spring pushes the sealing ball to block the water inlet.

[0026] Further, the filtering mechanism includes a filter plate and a push bar. The filter plate is inserted into the proportional valve body. The push bar is connected to the filter plate. The push bar has an inclined surface. The push bar pushes the cam to rotate so as to drive the pushing component to slide so that the second spring is compressed.

[0027] Further, a limiting mechanism is arranged on the water outlet end and the water inlet end of the proportional valve body. The limiting mechanism is used to limit the rotation stroke of both the first rotating handle and the second rotating handle to 180°.

[0028] Further, the limiting mechanism includes two first limiting grooves opened on the proportional valve body. The two first limiting grooves are respectively arranged around the first rotating handle and the second rotating handle. Elastic telescopic rod assemblies that rotate in the corresponding first limiting grooves are arranged on both the first rotating handle and the second rotating handle. Second limiting grooves are opened on the side walls of the first limiting grooves, and the ends of the elastic telescopic rod assemblies are clamped into the second limiting grooves.

[0029] Further, the elastic telescopic rod assembly includes a first limit block, a second limit block, and a third spring. One end of the first limit block is connected to the first rotating handle / the second rotating handle. An accommodation groove is formed at the other end of the first limit block. The third spring and the second limit block are located in the accommodation groove, and the third spring is located between the first limit block and the second limit block; a toggle plate is provided on the second limit block.

[0030] The above technical solutions of the present invention at least include the following beneficial effects:

[0031] 1. When the outlet joint and / or the inlet joint are disassembled from the proportional valve body, the water inlet of the proportional valve body can be blocked by the sealing ball to prevent water from flowing out. When disassembling and repairing the proportional valve body, it is not necessary to close the main valve of the water pipe, making the repair more convenient and improving the repair efficiency;

[0032] 2. By pushing the sliding cylinder, the sliding cylinder can slide inside the fixed cylinder. The first spring can reset the sliding cylinder. The water inlet end of the sliding cylinder and the water outlet end of the fixed cylinder are connected by a telescopic hose to ensure that there is no water leakage during the process of the sliding cylinder sliding inside the fixed cylinder;

[0033] 3. When installing the proportional valve body and the outlet joint, rotate the first rotating handle. Since the convex plate welded on the first rotating handle is hinged to the push block, the rotation of the first rotating handle can drive the push block to move. The push block pulls the first clamping block to move radially inward along the water outlet end of the proportional valve body through the first connecting rod. Then, insert the water outlet end of the proportional valve body into the water outlet end sleeve. Reverse the rotation of the first rotating handle. The push block pushes the first clamping block to move radially outward along the water outlet end of the proportional valve body through the first connecting rod, so that the first clamping block is clamped into the first clamping groove, thereby achieving the purpose of installing and connecting the proportional valve body and the outlet joint together. The disassembly and assembly operations are convenient;

[0034] 4. When installing the inlet joint and the proportional valve body, it is necessary to first compress the outlet joint to create an installation gap between the inlet joint and the proportional valve body. When the water inlet ends of the inlet joint and the proportional valve body are aligned coaxially, insert the water inlet end of the proportional valve body into the water inlet end sleeve. The push rod abuts against the sealing ball, and the sealing ball pushes the push rod to move, so that the second clamping block is clamped into the second clamping groove, thereby achieving the purpose of installing and connecting the proportional valve body and the inlet joint together. When disassembly is required, rotate the second rotating handle to make the convex end of the cam on the second rotating handle move away from the push rod. The push rod moves through the sealing ball and the second spring, and drives the second clamping block to move through the second connecting rod, so that the second clamping block disengages from the second clamping groove, thereby achieving the purpose of disassembling the inlet joint and the proportional valve body. The disassembly and assembly operations are convenient. During disassembly, since the push rod gradually loses the effect of pushing the sealing ball, the second spring pushes the sealing ball to re-seal and block the water inlet through hole, and it is not necessary to close the water valve to effectively prevent water from flowing out;

[0035] 5. The impurities in the water source can be filtered through the filtering mechanism to prevent the impurities in the water from accumulating inside the proportional valve body and damaging the proportional valve body, which can effectively extend the service life of the proportional valve body;

[0036] 6. When the filter plate needs to be cleaned, remove the screws and pull the filter plate out of the proportional valve body to clean the filter plate. It is easy to disassemble and clean;

[0037] 7. When the filter plate is disassembled, the push bar no longer has the effect of pushing the raised end of the cam close to the push rod, so that the cam can be pushed and moved by the second spring, the sealing ball and the push rod. The second spring pushes the sealing ball to move toward the water inlet hole, so that the sealing ball blocks and seals the water inlet hole, and the water source will not flow out from the disassembly position, so that when the filter plate is disassembled and cleaned, there is no need to close the main valve of the water pipe, which makes cleaning more convenient and more efficient;

[0038] 8. The third spring can push the second limit block into the second limit groove, thereby limiting the rotation of the first handle and the second handle, and effectively preventing the first handle and the second handle from rotating due to erroneous operation;

[0039] 9. Manually push the toggle plate to drive the second limit block to move toward the accommodating groove, so that the second limit block is separated from the second limit groove, and then the first handle and the second handle can be rotated, which is reliable and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A three-dimensional diagram of a proportional valve in an embodiment of the present invention;

[0041] Figure 2 An exploded view of a proportional valve in an embodiment of the present invention;

[0042] Figure 3 Schematic diagram of the cross-sectional structure of a proportional valve in an embodiment of the present invention;

[0043] Figure 4 is a three-dimensional cross-sectional view of an inlet joint in an embodiment of the present invention;

[0044] Figure 5 It is a three-dimensional cross-sectional view of a proportional valve body in an embodiment of the present invention;

[0045] Figure 6 is a three-dimensional cross-sectional view of an outlet connector in an embodiment of the present invention;

[0046] Figure 7 is a three-dimensional cross-sectional view of a filter mechanism in an embodiment of the present invention;

[0047] Figure 8 for Figure 1Schematic enlarged structure diagram of part A;

[0048] Figure 9 is Figure 3 Schematic enlarged structure diagram of part B.

[0049] In the figure:

[0050] 1. Inlet joint; 101. Pipe body; 102. Inlet end sleeve; 103. Inlet through hole; 104. Second card slot;

[0051] 2. Proportion valve body;

[0052] 3. Outlet joint; 301. First card slot; 302. Fixed cylinder; 303. Sliding cylinder; 304. First spring; 305. Telescopic hose; 306. Outlet end sleeve;

[0053] 4. First connection flange;

[0054] 5. Second connection flange;

[0055] 6. First clamping mechanism; 601. First turning handle; 602. Convex plate; 603. Pusher block; 604. First connecting rod; 605. First clamping block;

[0056] 7. Second clamping mechanism; 701. Second turning handle; 702. Second connecting rod; 703. Second clamping block; 704. Cam;

[0057] 8. Pushing assembly; 801. Push rod;

[0058] 9. Blocking mechanism; 901. Second spring; 902. Sealing ball;

[0059] 10. Filter mechanism; 1001. Filter plate; 1002. Push bar; 1003. Inclined surface;

[0060] 11. Limiting mechanism; 1101. First limiting groove; 1102. First limiting block; 1103. Second limiting groove; 1104. Second limiting block; 1105. Third spring; 1106. Poking plate. Detailed implementation manners

[0061] For the purpose of making the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will combine the accompanying Figures 1-9 drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by the present invention.

[0062] Such as Figures 1-6As shown, a proportional valve includes a proportional valve body 2. The left end of the proportional valve body 2 is the water inlet, and the right end of the proportional valve body 2 is the water outlet. It further includes:

[0063] An outlet joint 3, which is detachably installed at the water outlet end of the proportional valve;

[0064] A first clamping mechanism 6, which is installed between the proportional valve body 2 and the outlet joint 3 and is used to connect the proportional valve body 2 and the outlet joint 3;

[0065] An inlet joint 1, which is detachably installed at the water inlet end of the proportional valve;

[0066] A second clamping mechanism 7, which is installed between the proportional valve body 2 and the inlet joint 1 and is used to connect the proportional valve body 2 and the inlet joint 1;

[0067] A blocking mechanism 9, which includes a second spring 901 installed axially in the inlet joint 1 along the inlet joint 1. One end of the second spring 901 close to the proportional valve body 2 is connected to a sealing ball 902, and the sealing ball 902 is used to block the water inlet. The other end of the second spring 901 is fixedly connected to the inlet joint 1;

[0068] Wherein, the second clamping mechanism 7 is linked to the blocking mechanism 9. When the second clamping mechanism 7 connects the proportional valve body 2 and the inlet joint 1, the second spring 901 is compressed, and the sealing ball 902 moves away from the water inlet;

[0069] When the second clamping mechanism 7 disconnects the proportional valve body 2 and the inlet joint 1, the second spring 901 pushes the sealing ball 902 to block the water inlet.

[0070] When the outlet joint 3 and / or the inlet joint 1 is disassembled from the proportional valve body 2, the water inlet of the proportional valve body 2 can be blocked by the sealing ball 902 to prevent water from flowing out. When disassembling and repairing the proportional valve body 2, it is not necessary to close the main valve of the water pipe, making the repair more convenient and improving the repair efficiency.

[0071] According to an embodiment of the present invention, as Figure 2 and Figure 6As shown, the outlet joint 3 includes a fixed cylinder 302, a sliding cylinder 303, a first spring 304, and a telescopic hose 305. The right end of the fixed cylinder 302 is welded with a second connecting flange 5 for externally connecting an outlet pipe. The first spring 304 is axially movably installed in the fixed cylinder 302. The right end of the first spring 304 abuts against the left side wall of the second connecting flange 5. The sliding cylinder 303 is slidably sleeved in the fixed cylinder 302. The right end of the sliding cylinder 303 abuts against the left end of the first spring 304. The telescopic hose 305 is installed inside the sliding cylinder 303 and the first spring 304. Both ends of the telescopic hose 305 are connected to the right port of the fixed cylinder 302 and the left port of the sliding cylinder 303 respectively.

[0072] By pushing the sliding cylinder 303, the sliding cylinder 303 can slide inside the fixed cylinder 302. The first spring 304 can reset the sliding cylinder 303. The water inlet end of the sliding cylinder 303 and the water outlet end of the fixed cylinder 302 are connected through the telescopic hose 305, ensuring that there is no water leakage during the process of the sliding cylinder 303 sliding inside the fixed cylinder 302.

[0073] According to another embodiment of the present invention, as Figure 3 and Figure 5 shown, a water outlet end sleeve 306 is welded to the left end of the sliding cylinder 303. The central axis of the water outlet end sleeve 306 is on the same straight line as the central axis of the sliding cylinder 303. The water outlet end sleeve 306 is slidably sleeved on the water outlet end of the proportional valve body 2. A first clamping groove 301 is formed in the inner side wall of the water outlet end sleeve 306 along the circumferential direction. The first clamping mechanism 6 includes a first rotating handle 601, a convex plate 602, a push block 603, a first connecting rod 604, and a first clamping block 605. The first rotating handle 601 penetrates the side wall of the water outlet end of the proportional valve body 2 along the radial direction of the water outlet end of the proportional valve body 2. The first rotating handle 601 is rotatably connected to the proportional valve body 2. The convex plate 602, the push block 603, and the first connecting rod 604 are all located inside the proportional valve body 2. The convex plate 602 is fixedly connected to the first rotating handle 601. The left end of the push block 603 is hinged to the convex plate 602. The right end of the push block 603 is hinged to the end of the first connecting rod 604. The other end of the first connecting rod 604 is hinged to the first clamping block 605. The first clamping block 605 movably penetrates the side wall of the water outlet end of the proportional valve body 2. The first clamping block 605 cooperates with the first clamping groove 301.

[0074] When installing the proportional valve body 2 and the outlet joint 3, rotate the first turning handle 601. Since the convex plate 602 welded to the first turning handle 601 is hinged to the push block 603, the rotation of the first turning handle 601 can drive the push block 603 to move. The push block 603 pulls the first clamping block 605 through the first connecting rod 604 to move radially inward along the water outlet end of the proportional valve body 2. Then, insert the water outlet end of the proportional valve body 2 into the water outlet end sleeve 306. Rotate the first turning handle 601 in the reverse direction. The push block 603 pushes the first clamping block 605 through the first connecting rod 604 to move radially outward along the water outlet end of the proportional valve body 2, so that the first clamping block 605 is clamped into the first clamping groove 301, thereby achieving the purpose of installing and connecting the proportional valve body 2 and the outlet joint 3 together. The operation is convenient.

[0075] In an embodiment of the present invention, as Figures 3-5 shown, the inlet joint 1 includes a pipe body 101. The left end of the pipe body 101 is welded with a first connecting flange 4 for externally connecting an inlet water pipe. The blocking mechanism 9 is installed in the pipe body 101. The left end of the second spring 901 is welded to the right side wall of the first connecting flange 4, and the right end of the second spring 901 is welded to the sealing ball 902. The sealing ball 902 is used to block the water inlet through hole 103 between the pipe body 101 and the water inlet end sleeve 102. The right end of the pipe body 101 is welded with a water inlet end sleeve 102. The central axis of the water inlet end sleeve 102 is on the same straight line as the central axis of the pipe body 101. The water inlet end sleeve 102 is movably sleeved on the water inlet end of the proportional valve body 2. A second clamping groove 104 is formed on the inner side wall of the water inlet end sleeve 102 along the circumferential direction. The second clamping mechanism 7 includes a second turning handle 701, a second connecting rod 702, a second clamping block 703, a cam 704 and a pushing component 8. The second turning handle 701 penetrates the side wall of the water inlet end of the proportional valve body 2 along the radial direction of the water inlet end of the proportional valve body 2. The second turning handle 701 is rotatably connected to the proportional valve body 2. The second connecting rod 702, the cam 704 and the pushing component 8 are all located inside the proportional valve body 2. The pushing component 8 is slidably connected to the proportional valve body 2. The cam 704 is fixedly sleeved on the second turning handle 701. The second turning handle 701 drives the cam 704 to rotate so as to drive the pushing component 8 to slide axially along the water inlet end of the proportional valve body 2. One end of the second connecting rod 702 is hinged to the pushing component 8, and the other end of the second connecting rod 702 is hinged to the second clamping block 703. The second clamping block 703 movably penetrates the side wall of the water inlet end of the proportional valve body 2. The second clamping block 703 cooperates with the second clamping groove 104. A positioning plate is welded inside the water inlet end of the proportional valve body 2. The pushing component 8 includes a push rod 801 slidably connected to the positioning plate. The push rod 801 is in a strip-shaped frame shape and is movably sleeved on the positioning plate and slides axially along the water inlet end of the proportional valve body 2. A return spring is connected between the push rod 801 and the positioning plate.

[0076] When installing the inlet joint 1 and the proportional valve body 2, it is necessary to first compress the outlet joint 3 so that there is an installable gap between the inlet joint 1 and the proportional valve body 2. When the water inlet ends of the inlet joint 1 and the proportional valve body 2 are aligned coaxially, insert the water inlet end of the proportional valve body 2 into the water inlet sleeve 102. The push rod 801 and the sealing ball 902 are in contact. First, the sealing ball 902 pushes the push rod 801 to move inside the proportional valve body 2. The cam 704 on the second rotating handle 701 limits the movement of the push rod 801, so that the push rod 801 stops moving. When the push rod 801 does not move, the push rod 801 pushes the sealing ball 902 to move, so that the sealing ball 902 does not block the water inlet through hole 103, so that the water source can enter the proportional valve body 2 through the inlet joint 1. At the same time, when the sealing ball 902 pushes the push rod 801 to move, the second connecting rod 702 can push the second clamping block 703 to move radially outward along the water inlet opening end of the proportional valve body 2 towards the outside of the proportional valve body 2, so that the second clamping block 703 is clamped into the second clamping groove 104. At this time, the second connecting rod 702 is perpendicular to the axis of the proportional valve body 2, so as to achieve the purpose of installing and connecting the proportional valve body 2 and the inlet joint 1 together, and the operation is convenient. When it needs to be disassembled, rotate the second rotating handle 701 so that the convex end of the cam 704 on the second rotating handle 701 is away from the push rod 801. The push rod 801 moves through the sealing ball 902 and the second spring 901, and drives the second clamping block 703 to move through the second connecting rod 702, so that the second clamping block 703 disengages from the second clamping groove 104, so as to achieve the purpose of disassembling the inlet joint 1 and the proportional valve body 2, and the operation is convenient. At the same time of disassembly, since the push rod 801 gradually loses the effect of pushing the sealing ball 902, the second spring 901 pushes the sealing ball 902 to re-block and seal the water inlet through hole 103, and the water valve does not need to be closed, and the water source can be effectively prevented from flowing out.

[0077] In another embodiment of the present invention, as Figure 2 and Figure 7 shown, the water inlet end of the proportional valve body 2 is detachably installed with a filtering mechanism 10, and the filtering mechanism 10 is matched with the cam 704. When the filtering mechanism 10 is installed, the cam 704 is driven by force to slide the push rod 801 so that the second spring 901 is compressed, and the sealing ball 902 is away from the water inlet; when the filtering mechanism 10 is removed, the second spring 901 pushes the sealing ball 902 to block the water inlet. The filtering mechanism 10 includes a filter plate 1001 and a push bar 1002. The filter plate 1001 is inserted on the proportional valve body 2. The push bar 1002 is connected to the filter plate 1001. The push bar 1002 has an inclined surface 1003. The push bar 1002 pushes the cam 704 to rotate so as to drive the pushing assembly 8 to slide so that the second spring 901 is compressed. The filter plate 1001 is installed and connected to the proportional valve body 2 by screws.

[0078] The filter mechanism 10 can filter impurities in the water source to prevent the impurities in the water from accumulating inside the proportional valve body 2 and damaging the proportional valve body 2, which can effectively extend the service life of the proportional valve body 2. When the filter plate 1001 needs to be cleaned, the screws are removed and the filter plate 1001 is pulled out of the proportional valve body 2, and the filter plate 1001 can be cleaned. The disassembly is convenient and easy to clean. When the filter plate 1001 is disassembled, the push strip 1002 no longer has the effect of pushing the raised end of the cam 704 close to the push rod 801, so that the cam 704 can be pushed to move by the second spring 901, the sealing ball 902 and the push rod 801, and the second spring 901 pushes the sealing ball 902 to move toward the water inlet hole 103, so that the sealing ball 902 blocks and seals the water inlet hole 103, so that when the filter plate 1001 is disassembled, the water source will not flow out from the disassembly position, and when the filter plate 1001 is installed, the inclined surface of the push strip 1002 gradually pushes the cam 704 to rotate, so that the cam 704 pushes the push rod 801, the sealing ball 902 and the second spring 901 to move, so that the sealing ball 902 no longer has the effect of blocking and sealing the water inlet hole 103, so that the proportional valve can continue to be used normally.

[0079] In another embodiment of the present invention, Figure 1 , Figure 3 , Figure 8 and Figure 9 As shown, a limiting mechanism 11 is installed on the water outlet end and the water inlet end of the proportional valve body 2, and the limiting mechanism 11 is used to limit the rotation stroke of the first rotating handle 601 and the second rotating handle 701 to 180°. The limiting mechanism 11 includes two first limiting grooves 1101 provided on the proportional valve body 2, and the two first limiting grooves 1101 are arranged around the first rotating handle 601 and the second rotating handle 701 respectively. The first rotating handle 601 and the second rotating handle 701 are both connected with an elastic telescopic rod assembly rotating in the corresponding first limiting groove 1101, and a second limiting groove 1103 is provided on the side wall of the first limiting groove 1101, and the end of the elastic telescopic rod assembly is clamped into the second limiting groove 1103. The elastic telescopic rod assembly includes a first limit block 1102, a second limit block 1104 and a third spring 1105. One end of the first limit block 1102 is connected to the first rotating handle 601 / the second rotating handle 701. The other end of the first limit block 1102 is provided with a receiving groove. The third spring 1105 and the second limit block 1104 are located in the receiving groove. The third spring 1105 is located between the first limit block 1102 and the second limit block 1104. A toggle plate 1106 is provided on the second limit block 1104.

[0080] The first limit block 1102 and the second limit block 1104 can rotate in the first limit slot 1101, with a rotation stroke of 180°. The third spring 1105 can push the second limit block 1104 to fit into the second limit slot 1103, thereby limiting the rotation of the first handle 601 and the second handle 701, and effectively preventing the first handle 601 and the second handle 701 from rotating by mistake. Manually pushing the toggle plate 1106 can drive the second limit block 1104 to move toward the receiving slot, so that the second limit block 1104 is separated from the second limit slot 1103, and the operation is reliable and convenient.

[0081] The positions of the proportional valve of the present invention that need to be sealed are all equipped with sealing rings, which are prior art and will not be described in detail.

[0082] The working principle of the present invention is as follows: the outlet joint 3 is detachably connected to the water outlet end of the proportional valve body 2, the inlet joint 1 is detachably connected to the water inlet end of the proportional valve body 2, the outlet joint 3 is externally connected to the water outlet pipe through the second connecting flange 5, the inlet joint 1 is externally connected to the water inlet pipe through the first connecting flange 4, the push rod 801 is in contact with the sealing ball 902, the second spring 901 is in a compressed state, the sealing ball 902 does not block the water inlet through hole 103, and the water source can flow from the water inlet pipe to the water outlet pipe through the inlet joint 1, the proportional valve body 2 and the outlet joint 3 in sequence. When it is necessary to disassemble the outlet joint 3 and / or the inlet joint 1 from the proportional valve body 2, through the above corresponding operations, the sealing ball 902 can block the water inlet through hole 103 to prevent the water source from flowing out, so that when the proportional valve body 2 is disassembled for maintenance, there is no need to close the main valve of the water pipe, which makes maintenance more convenient and improves maintenance efficiency. In addition, the filter mechanism 10 can filter impurities in the water source to prevent impurities in the water from accumulating inside the proportional valve body 2 and damaging the proportional valve body 2, which can effectively extend the service life of the proportional valve body 2; when the filter plate 1001 needs to be cleaned, the screws are removed and the filter plate 1001 is pulled out from the proportional valve body 2, and the filter plate 1001 can be cleaned. The disassembly is convenient and easy to clean; when the filter plate 1001 is disassembled, the sealing ball 902 blocks and seals the water inlet hole 103, and the water source will not flow out from the disassembly point, so that when the filter plate 1001 is disassembled and cleaned, there is no need to close the main valve of the water pipe, and the cleaning is more convenient and more efficient.

[0083] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0084] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A proportional valve, comprising a proportional valve body, the proportional valve body having a water inlet and a water outlet, characterized in that, Further comprising: An outlet joint detachably arranged at the water outlet end of the proportional valve body; A first clamping mechanism arranged between the proportional valve body and the outlet joint and used for connecting the proportional valve body and the outlet joint; An inlet joint detachably arranged at the water inlet end of the proportional valve; A second clamping mechanism arranged between the proportional valve body and the inlet joint and used for connecting the proportional valve body and the inlet joint; A blocking mechanism, the blocking mechanism includes a second spring axially arranged in the inlet joint along the inlet joint, one end of the second spring close to the proportional valve body is connected to a sealing ball, the sealing ball is used for blocking the water inlet, and the other end of the second spring is fixedly connected to the inlet joint; Wherein, the second clamping mechanism is linked to the blocking mechanism. When the second clamping mechanism connects the proportional valve body and the inlet joint, the second spring is compressed and the sealing ball moves away from the water inlet; When the second clamping mechanism does not connect the proportional valve body and the inlet joint, the second spring pushes the sealing ball to block the water inlet.

2. The proportional valve according to claim 1, characterized in that, The outlet joint includes a fixed cylinder, a sliding cylinder, a first spring and a telescopic hose; The first spring is axially movably arranged in the fixed cylinder along the fixed cylinder. One end of the first spring is connected to the end of the fixed cylinder. The sliding cylinder is slidably sleeved in the fixed cylinder. The end of the sliding cylinder abuts against the other end of the first spring. The telescopic hose is arranged in the sliding cylinder and the first spring, and both ends of the telescopic hose are connected to the two ends of the fixed cylinder and the sliding cylinder away from each other.

3. The proportional valve according to claim 2, wherein One end of the sliding cylinder away from the fixed cylinder is provided with a water outlet end sleeve. The water outlet end sleeve is slidably sleeved on the water outlet end of the proportional valve body. A first clamping groove is circumferentially formed on the inner side wall of the water outlet end sleeve; The first clamping mechanism includes a first turning handle, a convex plate, a pushing block, a first connecting rod and a first clamping block; The first turning handle radially penetrates through the side wall of the water outlet end of the proportional valve body along the water outlet end of the proportional valve body. The first turning handle is rotatably connected to the proportional valve body. The convex plate, the pushing block and the first connecting rod are all located inside the proportional valve body. The convex plate is fixedly connected to the first turning handle. One end of the pushing block is hinged to the convex plate. The other end of the pushing block is hinged to the end of the first connecting rod. The other end of the first connecting rod is hinged to the first clamping block. The first clamping block movably penetrates through the side wall of the water outlet end of the proportional valve body. The first clamping block cooperates with the first clamping groove.

4. The proportional valve according to claim 1, characterized in that The inlet joint includes a pipe body. The blocking mechanism is arranged in the pipe body. One end of the pipe body is provided with a water inlet end sleeve. The water inlet end sleeve is slidably sleeved on the water inlet end of the proportional valve body. A second clamping groove is circumferentially formed on the inner side wall of the water inlet end sleeve; The second clamping mechanism includes a second turning handle, a second connecting rod, a second clamping block, a cam and a pushing component; The second rotating handle penetrates the side wall of the water inlet end of the proportional valve body along the radial direction of the water inlet end of the proportional valve body, the second rotating handle is rotatably connected to the proportional valve body, the second connecting rod, the cam and the pushing assembly are all located inside the proportional valve body, the pushing assembly is slidably connected to the proportional valve body, the cam is fixedly sleeved on the second rotating handle, the second rotating handle drives the cam to rotate, thereby driving the pushing assembly to slide axially along the water inlet end of the proportional valve body, one end of the second connecting rod is hinged to the pushing assembly, the other end of the second connecting rod is hinged to the second clamping block, the second clamping block movably penetrates the side wall of the water inlet end of the proportional valve body, and the second clamping block cooperates with the second clamping groove.

5. The proportional valve according to claim 4, characterized in that, A positioning plate is provided inside the water inlet end of the proportional valve body, and the pushing assembly includes a push rod slidably connected to the positioning plate, and the push rod slides axially along the water inlet end of the proportional valve body.

6. The proportional valve according to claim 4, characterized in that, The water inlet end of the proportional valve body is detachably provided with a filtering mechanism, and the filtering mechanism cooperates with the cam; When the filter mechanism is installed, the cam is driven by force to push the assembly to slide so that the second spring is compressed and the sealing ball is away from the water inlet; When the filter mechanism is removed, the second spring pushes the sealing ball to block the water inlet.

7. The proportional valve according to claim 6, characterized in that, The filter mechanism comprises a filter plate and a push bar. The filter plate is inserted on the proportional valve body. The push bar is connected to the filter plate. The push bar has an inclined surface. The push bar pushes the cam to rotate, thereby driving the push assembly to slide so that the second spring is compressed.

8. The proportional valve according to claim 3 or 4, characterized in that, A limiting mechanism is provided on the water outlet end and the water inlet end of the proportional valve body, and the limiting mechanism is used to limit the rotation stroke of the first rotating handle and the second rotating handle to 180°.

9. The proportional valve according to claim 8, characterized in that, The limiting mechanism includes two first limiting grooves formed on the proportional valve body, the two first limiting grooves are respectively arranged around the first rotating handle and the second rotating handle, the first rotating handle and the second rotating handle are both provided with an elastic telescopic rod assembly rotating in the corresponding first limiting groove, a second limiting groove is formed on the side wall of the first limiting groove, and the end of the elastic telescopic rod assembly is clamped into the second limiting groove.

10. The proportional valve according to claim 9, characterized in that, The elastic telescopic rod assembly includes a first limit block, a second limit block and a third spring. One end of the first limit block is connected to the first rotating handle / the second rotating handle. The other end of the first limit block is provided with a receiving groove. The third spring and the second limit block are located in the receiving groove. The third spring is located between the first limit block and the second limit block. A toggle plate is provided on the second limit block.

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