Three-way valve and filter with three-way valve

Abstract

The present invention specifically relates to a three-way valve and a filter with a three-way valve, the three-way valve comprising a first fluid inlet, a first fluid supply port and a cleaning outlet, a valve core is arranged inside the first fluid inlet, a kinetic force-bearing part is arranged inside the cleaning outlet, the kinetic force-bearing part controls the valve core to close, and the first fluid inlet, the first fluid supply port and the cleaning outlet are internally connected. The three-way valve can change the flow direction of the fluid inside the filter by opening different outlets at the far end, so as to achieve the function of self-cleaning the internal filter element. The filter of the present invention is equipped with the three-way valve, the first fluid supply port is connected to the filter inlet, the second fluid supply port is connected to the filter outlet, the first fluid inlet and the second fluid inlet are connected to the external fluid inlet, and the cleaning outlet and the second fluid outlet are both connected to the valve. The filter of the present invention can reverse the flow of the fluid by opening the cleaning outlet valve at the use end, and the filter self-cleans the internal filter element to discharge the dirt and impurities accumulated at the front end of the filter element.

Description

Technical Field

[0001] The invention belongs to the technical field of valves, and in particular relates to a three-way valve and a filter with the three-way valve. Background Art

[0002] Application No. 201610487593.8 is that the raw water pipe is connected in series with a water purification valve 310 and a sewage valve 320; the two sides of the filter element 2 are provided with a pure water port 51 and a sewage port 52. The sewage valve 320 is closed and the water purification valve 310 is opened, or the sewage valve 320 is opened and the water purification valve 310 is closed to change the flow direction of water.

[0003] Application No. 202020952265.2 When direct drinking water is produced, close the second valve 10, the fourth valve 12, and the fifth valve 13, and open the first valve 9 and the third valve 11. When the water purifier is self-cleaning, first close the first valve 9 and the third valve 11, and open the fourth valve 12 and the second valve 10.

[0004] Application No. 201710983130.5 The first pipeline is provided with a first solenoid valve 3 and a second solenoid valve 4 respectively; the second pipeline is provided with a fifth solenoid valve 7. The third pipeline is provided with a third solenoid valve 5 and a fourth solenoid valve 6 respectively. The water flow direction is changed by opening and closing different solenoid valves.

[0005] Application No. 202021012602.6 A circulation pump is provided on the first water conduit to manually backwash the filter element in the filter.

[0006] Common methods for cleaning water purifier filter cartridges are: 1-remove the filter cartridge for cleaning, 2-install a water pump at the purified water outlet of the water purifier to provide power to pump water backflow for cleaning, 3-install a manual or solenoid valve at the tap water inlet and the purified water outlet at the same time, and change the direction of the water flow for cleaning by opening and closing the valve at one end.

[0007] Usually, the water purifier is installed at a remote location (outdoors, inside a cabinet), which makes it inconvenient to manually open and close the water inlet faucet, or the power supply is installed to use an electronically controlled water inlet faucet, or the filter element is inconvenient to remove, etc. At present, no valve has been found that can self-clean the filter at a remote location without power supply. Summary of the invention

[0008] In order to solve the above-mentioned problems existing in the prior art, the present invention provides a three-way valve and a filter with a three-way valve, wherein the three-way valve can change the flow direction of the fluid inside the filter by opening different outlets at the far end, thereby achieving the function of self-cleaning the internal filter element; the filter can make the fluid flow in the reverse direction by opening the cleaning outlet valve at the use end, and the filter can self-clean the internal filter element and discharge the dirt and impurities accumulated at the front end of the filter element.

[0009] The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0010] A three-way valve comprises a first fluid inlet, a first fluid supply port and a cleaning outlet. A normally open one-way valve is arranged inside the first fluid inlet. The normally open one-way valve is connected to a kinetic energy-bearing part through a connecting rod. The first fluid inlet, the first fluid supply port and the cleaning outlet are internally connected.

[0011] Furthermore, in the above-mentioned three-way valve, when the outlet valve is opened, the force supplied by the normally open one-way valve is less than the fluid pressure on the outlet kinetic energy-bearing parts.

[0012] A three-way valve comprises a first fluid inlet, a first fluid supply port and a cleaning outlet. A normally open gate valve is arranged inside the first fluid inlet. The normally open gate valve is connected to a kinetic energy-bearing part through a connecting rod. The first fluid inlet, the first fluid supply port and the cleaning outlet are internally connected.

[0013] Furthermore, in the above-mentioned three-way valve, a locking part is also provided inside the first fluid inlet, and the normally open gate valve and the locking part are connected to the kinetic energy force-bearing part through a connecting rod.

[0014] A three-way valve comprises a second fluid inlet, a second fluid supply port and a second fluid outlet, a normally closed one-way valve is arranged inside the second fluid inlet, the supply force of the normally closed one-way valve is less than the external fluid pressure, a locking part is arranged inside the pipeline of the second fluid inlet, and the locking part is connected to the kinetic energy force-bearing part, the second fluid inlet, the second fluid supply port and the second fluid outlet through a connecting rod.

[0015] Furthermore, in the above-mentioned three-way valve, when the outlet valve is opened, the combined force of the normally closed one-way valve and the locking part is greater than the pressure reduced by the fluid passing through the filter element due to obstruction.

[0016] A filter is provided with the above three-way valve.

[0017] Furthermore, in the above-mentioned filter, the first fluid supply port is connected to the filter inlet, and the second fluid supply port is connected to the filter outlet;

[0018] The first fluid inlet and the second fluid inlet are connected to an external fluid inlet;

[0019] The cleaning outlet and the second fluid outlet are both connected to valves.

[0020] Furthermore, in the above-mentioned filter, when the valve of the second fluid outlet is opened, the second fluid inlet is closed in conjunction with it, and the fluid enters the filter inlet through the first fluid inlet and flows out from the second fluid outlet in the forward direction; when the valve of the cleaning outlet is opened, the first fluid inlet is closed in conjunction with it, and the fluid enters the filter outlet through the second fluid inlet and flows out from the cleaning outlet in the reverse direction.

[0021] Furthermore, in the above-mentioned filter, a valve is provided at the convergence of the second fluid outlet and the cleaning outlet.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The filter equipped with the three-way valve of the present invention does not require electricity, and does not need to open and close the valve at the front end of the filter. The fluid can flow in reverse by opening the cleaning outlet valve at the use end. The filter can self-clean the internal filter element and discharge the dirt and impurities accumulated at the front end of the filter element.

[0024] 2. The filter of the three-way valve of the present invention has low cost, simple structure, convenience and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the three-way valve of Example 1;

[0026] Figure 2 Schematic diagram of the three-way valve of Example 2;

[0027] Figure 3 Schematic diagram of the three-way valve of Example 3;

[0028] Figure 4 is a schematic diagram of the filter of Example 4;

[0029] Figure 5 is a schematic diagram of the filter of Example 5;

[0030] Figure 6 This is a schematic diagram of the filter of Example 6.

[0031] In the figure: 1. first fluid inlet; 2. second fluid inlet; 3. cleaning outlet; 4. second fluid outlet; 5. normally open gate valve; 6. locking part; 7. kinetic energy force-bearing part; 8. connecting rod; 9. spring; 10. external fluid inlet; 11. first fluid supply port; 12. second fluid supply port; 13. filter; 14. normally open one-way valve; 15. normally closed one-way valve; 16. filter inlet; 17. filter outlet; 18. valve; 19. filter element. DETAILED DESCRIPTION

[0032] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific implementation methods, structural features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and embodiments.

[0033] The fluid of the present invention includes but is not limited to water, oil, gas and other flowable substances; the filter of the present invention includes but is not limited to water purifiers, gasoline filter boxes, air purifiers, etc., and also includes any working body that can work in a reversible direction.

[0034] The first fluid inlet and the second fluid inlet of the present invention are only relative positions, and can be replaced by each other if the valve structures are the same.

[0035] Embodiment 1:

[0036] This embodiment provides a three-way valve. Figure 1 The three-way valve comprises a first fluid inlet 1, a first fluid supply port 11 and a cleaning outlet 3. A normally open one-way valve 14 is arranged inside the first fluid inlet 1. The normally open one-way valve 14 is connected to the kinetic energy force-bearing part 7 through a connecting rod 8. The first fluid inlet 1, the first fluid supply port 11 and the cleaning outlet 3 are internally connected. When the outlet valve is opened, the force supplied by the normally open one-way valve 14 is less than the fluid pressure on the outlet kinetic energy force-bearing part.

[0037] Embodiment 2:

[0038] This embodiment provides another three-way valve. Figure 2 The three-way valve comprises a first fluid inlet 1, a first fluid supply port 11 and a cleaning outlet 3. A normally open gate valve 5 is arranged inside the first fluid inlet 1. The normally open gate valve 5 is connected to a kinetic energy-bearing part 7 through a connecting rod 8. The first fluid inlet 1, the first fluid supply port 11 and the cleaning outlet 3 are internally connected.

[0039] A locking part 6 may also be provided inside the first fluid inlet 1 of the three-way valve of this embodiment. The normally open gate valve 5 and the locking part 6 are connected to the kinetic energy force-bearing part 7 through a connecting rod 8. The first fluid inlet 1, the first fluid supply port 11 and the cleaning outlet 3 are internally connected.

[0040] Embodiment 3:

[0041] This embodiment provides another three-way valve. Figure 3 , including a second fluid inlet 2, a second fluid supply port 12 and a second fluid outlet 4, a normally closed one-way valve 15 is arranged inside the second fluid inlet 2, the force supplied by the normally closed one-way valve 15 is less than the external fluid pressure, a locking part 6 is arranged inside the pipeline of the second fluid inlet 2, the locking part 6 is connected to the kinetic energy force-bearing part 7 through a connecting rod 8, the second fluid inlet 2, the second fluid supply port 12 and the second fluid outlet 4. When the outlet valve is opened, the combined force of the normally closed one-way valve 15 and the locking part 6 is greater than the pressure reduced by the fluid passing through the filter element due to obstruction. When the outlet valve is opened, the force supplied by the normally closed one-way valve 15 is less than the external fluid pressure.

[0042] Those skilled in the art will appreciate that the normally open one-way valve of Example 1 and the normally closed one-way valve of Example 3 may be supplied with force by means other than springs, which will not be described in this case.

[0043] Embodiment 4:

[0044] This embodiment provides a filter such as Figure 4As shown, a schematic diagram of the connection between the three-way valve and the filter 13 is shown, the first fluid supply port 11 is connected to the filter inlet 16, and the second fluid supply port 12 is connected to the filter outlet 17; the first fluid inlet 1 and the second fluid inlet 2 are connected to the external fluid inlet 10; the cleaning outlet 3 and the second fluid outlet 4 are both connected to the valve 18. The second fluid outlet 4 and the cleaning outlet 3 are converged to set the valve 18.

[0045] When the valve of the second fluid outlet 4 is opened, the second fluid inlet 2 is closed in conjunction, and the fluid enters the filter inlet 16 through the first fluid inlet 1 and flows out from the second fluid outlet 4 in the forward direction; when the valve of the cleaning outlet 3 is opened, the first fluid inlet 1 is closed in conjunction, and the fluid enters the filter outlet 17 through the second fluid inlet 4 and flows out from the cleaning outlet 3 in the reverse direction.

[0046] When the remote valve 18 of the cleaning outlet 3 and the remote valve 18 of the second fluid outlet 4 are closed at the same time, the internal pressure of the second fluid inlet 2 is balanced, and the one-way valve 15 is closed but does not work; the fluid kinetic energy-bearing parts 7 and the fluid kinetic energy-bearing parts 17 are suspended inside the pipeline and are not subject to force, and the linked locking parts 6 are not subject to force.

[0047] It should be noted that those skilled in the art understand that the first fluid inlet 1 and the second fluid inlet 2 share the fluid pressure of the external fluid inlet 10, but the pressures they are subjected to are not equal and are also affected by the filter element resistance, vertical height difference, pore size, etc., which are not explained here.

[0048] The combined force of the one-way valve 15 and the locking part 6 is set to be greater than the pressure reduced by the fluid passing through the filter element 19 and less than the external fluid pressure.

[0049] When the remote valve 18 of the second fluid outlet 4 is opened alone, the fluid of the second fluid inlet 2 rushes open the one-way valve, and the fluid theoretically enters the first fluid inlet 1 and the second fluid inlet 2 at the same time. However, the fluid flow of the second fluid outlet 4 allows the kinetic energy-bearing part 7 to transfer the impact of the fluid outflow to the locking part 6 through the connecting rod 8. The one-way valve 15 and the locking part 6 work together to block and distribute the pressure of the second fluid inlet 2 to the first fluid inlet 1, finally closing the second fluid inlet 2 and opening the first fluid inlet 1.

[0050] When the remote valve 18 of the cleaning outlet 3 is opened alone, the fluid from the second fluid inlet 2 rushes open the one-way valve, and the fluid theoretically enters the first fluid inlet 1 and the second fluid inlet 2 at the same time. However, the flow of fluid from the cleaning outlet 3 allows the kinetic energy-bearing part 7 to transfer the impact of the fluid outflow to the locking part 6 and the gate valve 5, and the gate valve 5 is pulled down together with the locking part 6 to distribute the pressure of the first fluid inlet 1 to the second fluid inlet 2, and finally close the first fluid inlet 1 and open the second fluid inlet 2, so that the fluid flows in the reverse direction, self-cleaning the filter element 19 inside the filter 13, and discharges the dirt and impurities accumulated at the front end of the filter element 19.

[0051] Embodiment 5:

[0052] like Figure 5 As shown, it is a schematic diagram of the connection between the three-way valve and the filter 13, the external fluid inlet 10 is provided with a valve 18, the first fluid supply port and the filter inlet, the second fluid supply port and the filter outlet are combined into a straight-through filter element 19.

[0053] When the valve 18 at the far end of the second fluid outlet 4 is opened alone, the second fluid inlet 2 is closed and the first fluid inlet 1 is opened as described in the fourth embodiment.

[0054] The spring force of the one-way valve 14 is set to be smaller than the fluid pressure on the kinetic energy-bearing parts of the cleaning outlet 3.

[0055] When the remote valve 18 of the cleaning outlet 3 is opened alone, the fluid from the second fluid inlet 2 rushes open the one-way valve, and the fluid theoretically enters the first fluid inlet 1 and the second fluid inlet 2 at the same time. However, the flow of fluid from the cleaning outlet 3 allows the kinetic energy-bearing part 7 to transfer the impact of the fluid outflow to the one-way valve 14 through the connecting rod 8. The spring force of the one-way valve 14 is less than the fluid pressure of the cleaning outlet 3, thereby closing the first fluid inlet 1 and distributing the pressure of the first fluid inlet 1 to the second fluid inlet 2, thereby opening the second fluid inlet 2, allowing the fluid to flow in reverse, self-cleaning the filter element 19 inside the filter 13, and discharging the dirt and impurities accumulated at the front end of the filter element 19.

[0056] Embodiment 6:

[0057] like Figure 6 As shown, a schematic diagram of the connection between the three-way valve and the filter 13 is shown, where the cleaning outlet 3 and the second fluid outlet 4 converge to form a valve 18. The valve 18 can be a common three-way valve or a valve that can be closed in either direction separately.

[0058] When the cleaning outlet 3 is closed, the first fluid inlet 1 is connected to the second fluid outlet 4; when the second fluid outlet 4 is closed, the second fluid inlet 2 is connected to the cleaning outlet 3; when the outlets in another direction except the cleaning outlet 3 and the second fluid outlet 4 are closed, the description of "the remote valve 18 of the cleaning outlet 3 and the remote valve 18 of the second fluid outlet 4 are closed at the same time" is as described in Example 4.

[0059] The above embodiments are recorded, and any modification, change, and change of equivalent principle made by any person familiar with the art using the equivalent function of this invention are as follows:

[0060] The inlet and outlet of the three-way valve are separately set at the inlet or outlet of the filter, and the supply port is directly connected to the filter element;

[0061] The valve core includes but is not limited to one-way valve, gate valve, magnet, suction cup, gravity ball, ceramic staggered and other solutions;

[0062] The locking parts adopt lever pressing, pinning, inclined lifting and other solutions;

[0063] Kinetic force-bearing parts include but are not limited to grooves, blades, sliders, etc.;

[0064] The kinetic energy-bearing parts can act on the locking parts and valve core through transmission devices such as levers, chains, gears, and inclined tops;

[0065] The cleaning outlet caliber is not less than the second fluid outlet caliber, and the settings made inside the pipeline for matching the valve core and matching the kinetic energy force-bearing parts are all within the patent scope claimed by this invention, and are not limited to those disclosed in the embodiments. For ordinary technicians in the technical field to which the present invention belongs, several deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the protection scope of the present invention.

Claims

1. A filter, characterized in that: Includes three-way valve; One of the three-way valves includes a second fluid inlet, a second fluid supply port, and a second fluid outlet. A normally closed one-way valve is arranged inside the second fluid inlet. The force supplied by the normally closed one-way valve is less than the external fluid pressure. A second locking part is arranged inside the pipeline of the second fluid inlet. The second locking part is connected to the second kinetic energy force-bearing part through a second connecting rod. The second fluid inlet, the second fluid supply port, and the second fluid outlet are internally connected. When the outlet valve is opened, the combined force of the normally closed one-way valve and the second locking part is greater than the pressure reduced by the fluid passing through the filter element due to obstruction. The second fluid supply port is connected to the filter outlet. The second fluid inlet is connected to the external fluid inlet. The second fluid outlet is connected to the valve. Another three-way valve A comprises a first fluid inlet of the three-way valve A, a first fluid supply port of the three-way valve A and a cleaning outlet of the three-way valve A, wherein a normally open one-way valve of the three-way valve A is arranged inside the first fluid inlet of the three-way valve A, and the normally open one-way valve of the three-way valve A is connected to a kinetic energy-bearing part of the three-way valve A through a connecting rod of the three-way valve A, and the first fluid inlet of the three-way valve A, the first fluid supply port of the three-way valve A and the cleaning outlet of the three-way valve A are internally connected; when the outlet valve of the three-way valve A is opened, the force supplied by the normally open one-way valve of the three-way valve A is less than the fluid pressure on the outlet kinetic energy-bearing part of the three-way valve A; the three-way valve A The first fluid supply port of the three-way valve A is connected to the filter inlet; the first fluid inlet of the three-way valve A is connected to the external fluid inlet; the cleaning outlet of the three-way valve A is connected to the valve; when the valve of the second fluid outlet is opened, the second fluid inlet is linked to be closed, and the fluid enters the filter inlet through the first fluid inlet of the three-way valve A and flows out from the second fluid outlet in the forward direction; when the valve of the cleaning outlet of the three-way valve A is opened, the first fluid inlet of the three-way valve A is linked to be closed, and the fluid enters the filter outlet through the second fluid inlet and flows out from the cleaning outlet of the three-way valve A in the reverse direction; a valve is set at the convergence of the second fluid outlet and the cleaning outlet of the three-way valve A.

2. A filter, characterized in that: Includes three-way valve; One of the three-way valves includes a second fluid inlet, a second fluid supply port, and a second fluid outlet. A normally closed one-way valve is arranged inside the second fluid inlet. The force supplied by the normally closed one-way valve is less than the external fluid pressure. A second locking part is arranged inside the pipeline of the second fluid inlet. The second locking part is connected to the second kinetic energy force-bearing part through a second connecting rod. The second fluid inlet, the second fluid supply port, and the second fluid outlet are internally connected. When the outlet valve is opened, the combined force of the normally closed one-way valve and the second locking part is greater than the pressure reduced by the fluid passing through the filter element due to obstruction. The second fluid supply port is connected to the filter outlet. The second fluid inlet is connected to the external fluid inlet; the second fluid outlet is connected to the valve; Another three-way valve B comprises a first fluid inlet of the three-way valve B, a first fluid supply port of the three-way valve B and a cleaning outlet of the three-way valve B, wherein a normally open gate valve of the three-way valve B is arranged inside the first fluid inlet of the three-way valve B, and the normally open gate valve of the three-way valve B is connected to a kinetic energy force-bearing part of the three-way valve B through a connecting rod of the three-way valve B, and the first fluid inlet of the three-way valve B, the first fluid supply port of the three-way valve B and the cleaning outlet of the three-way valve B are internally communicated; a locking part of the three-way valve B is also arranged inside the first fluid inlet of the three-way valve B, and the normally open gate valve of the three-way valve B and the locking part of the three-way valve B are connected to the three-way valve B through a connecting rod of the three-way valve B. The kinetic energy-bearing parts; the first fluid supply port of the three-way valve B is connected to the filter inlet; the first fluid inlet of the three-way valve B is connected to the external fluid inlet; the cleaning outlet of the three-way valve B is connected to the valve; when the valve of the second fluid outlet is opened, the second fluid inlet is linked to be closed, and the fluid enters the filter inlet through the first fluid inlet of the three-way valve B and flows out from the second fluid outlet in the forward direction; when the valve of the cleaning outlet of the three-way valve B is opened, the first fluid inlet of the three-way valve B is linked to be closed, and the fluid enters the filter outlet through the second fluid inlet and flows out from the cleaning outlet of the three-way valve B in the reverse direction; the second fluid outlet and the cleaning outlet of the three-way valve B are converged to set a valve.

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