Impurity fluid electromagnetic valve capable of applying force reversely and application of impurity fluid electromagnetic valve in toilet tool

Abstract

The invention discloses an impurity fluid electromagnetic valve capable of reversely applying force. The impurity fluid electromagnetic valve comprises a reverse force applying part and a valve body part, the reverse force application part and the valve body part are orthogonal or cast at a certain angle; under different conditions, the reverse force application part opens or closes the valve body part; the valve body part comprises a valve body, two ends of the valve body are respectively provided with a fluid inlet and a fluid outlet, the middle part is provided with a raised opening, and the top of the raised opening is a closure section; the cut-off section has an unclosed working state in which the electromagnetic valve is in fluid communication with the fluid inlet and the fluid outlet after being powered off and a closed working state in which the electromagnetic valve is powered on; the reverse force application part comprises a diaphragm, a plugging pressing sheet, an armature, an armature movement cavity, a reset spring and an electromagnet; the electromagnet drives the armature to move or fixes the armature at a specific position under the action of magnetic force after being electrified; the force application direction of the reset spring to the armature through stretching is kept consistent with the force application direction of the electromagnet attracting the armature, and both push the plugging pressing piece and the diaphragm to close the electromagnetic valve. The invention further discloses application of the impurity fluid electromagnetic valve in a toilet and a flushing and pollution discharge method.

Description

Technical Field

[0001] The present invention relates to the fields of fast-response solenoid valves suitable for impurity fluids, efficient flushing and sewage discharge of toilets, and impurity fluid treatment technologies including feces and sewage treatment technologies, and in particular to an impurity fluid solenoid valve capable of reversible force application and its application in toilets. Background Art

[0002] First, the working principle of the existing pilot-type solenoid valve is that the force direction of the reset spring is opposite to the force direction of the armature when it is attracted by the electromagnet. If the reset spring causes the armature to open the solenoid valve, the solenoid valve attracts the armature to close the solenoid valve, which is a normally open solenoid valve; if the reset spring causes the armature to close the solenoid valve, the electromagnet attracts the armature to open the solenoid valve, which is a normally closed solenoid valve. However, although the pilot-type solenoid valve has the advantages of low power consumption, high reliability, fast response speed and can be used for impure fluids, its slow response speed cannot meet special control requirements, especially for fluids with high impurity content. It is extremely sensitive and easily blocked by impurities, affecting normal operation. Solenoid valves with diaphragms are often pilot-type, and their pilot holes are easily blocked, affecting normal operation. .

[0003] Second, although ordinary direct-acting solenoid valves can solve the problem of slow response speed, the armature will still be stuck due to impurities entering the valve core; direct-acting solenoid valves with diaphragms can solve problems such as fast response and impure fluid, but in the short process when the armature is driven by the electromagnet, the impact force on the diaphragm is very large, affecting the number of uses and service life of the diaphragm and even the entire solenoid valve.

[0004] Third, although some direct-acting solenoid valves with a water seal design or pneumatic valves with complex structures can also solve the problems of slow response speed, clogging by impurities and short service life of the solenoid valve, the solenoid valves are usually huge in size and have no room for optimization. They are difficult to meet the needs of a small working space, and their costs and prices remain high.

[0005] Therefore, the field of solenoid valves lacks an electromagnetic valve that can be used for impure fluids, has a fast response, a simple structure and a small size; there is a technical demand for designing a direct-acting solenoid valve based on a new usage principle. Summary of the invention

[0006] The purpose of the present invention is to provide an impurity fluid solenoid valve with reversible force and its application in toilets, so as to design a fast-response direct-acting solenoid valve based on pressure sewage discharge conditions to provide an efficient and universal solution for impurity fluid treatment including feces and sewage treatment technology.

[0007] A first aspect of the present invention is to provide an impurity fluid solenoid valve (15) capable of reverse force application, comprising: a reverse force application portion and a valve body portion; the reverse force application portion and the valve body portion are cast orthogonal or at a certain angle; under different conditions, the reverse force application portion opens or closes the valve body portion;

[0008] The valve body portion comprises a valve body (3), one end of the valve body (3) is provided with a fluid inlet (1), the other end of the valve body (3) is provided with a fluid outlet (2), a raised opening is provided in the middle of the valve body (3), the top of the raised opening is a cut-off section (11); the cut-off section (11) has two controlled working states, namely, an unclosed working state in which the fluid is connected to the fluid inlet (1) and the fluid outlet (2) after the solenoid valve is powered off, and a closed working state after the solenoid valve is powered on;

[0009] The reverse force-applying portion comprises a diaphragm (4), a blocking pressing piece (5), an armature (6), a return spring (8) and an electromagnet (10); wherein the diaphragm (4) is arranged between the cut-off section (11) and the blocking pressing piece (5), so that the cut-off section (11) can cut off the flow of fluid between the fluid inlet (1) and the fluid outlet (2) under the common pressure applied by the blocking pressing piece (5) and the diaphragm (4); the blocking pressing piece (5) is vertically connected to the return spring (8) through a contact portion arranged at the center, the lower end of the return spring (8) is elastically contacted and connected to the top surface of the armature (6), and a special spring (8) is arranged around the outer side of the armature (6). The electromagnet (10) is arranged in a certain area, and the electromagnet (10) is controlled by the magnetic force after being energized to drive the armature (6) to move or fix the armature (6) in a certain position; the direction of the force applied by the return spring (8) to the armature (6) by stretching is consistent with the direction of the force applied by the electromagnet (10) to attract the armature (6), both of which push the blocking pressing plate (5) and the diaphragm (4) to close the solenoid valve; the certain position is the position of the armature (6) closest to the valve body (3), so that the impurity fluid solenoid valve (15) with reversible force is in a closed state and can resist the pressure transmitted from one end of the fluid inlet (1).

[0010] Preferably, the magnetic field strength of the electromagnet (10) of the impurity fluid solenoid valve (15) capable of applying reversible force, the length and elastic coefficient of the return spring (8), and the weight and volume of the diaphragm (4) and the sealing press (5) are determined according to the application scenario.

[0011] Preferably, the specific area includes an area where the height of the electromagnet (10) is lower than the specific height of the armature (6), and when the shut-off section (11) is in the unclosed state, the top surface of the electromagnet (10) is lower than the top surface of the armature (6) or at least flush with the top surface of the armature (6).

[0012] Preferably, it also includes an armature movement chamber (7), the armature (6) is arranged in the armature movement chamber (7), the armature movement chamber (7) is annularly arranged between the armature (6) and the return spring (8) and is closed at the top end, and the top end has a fastening contact portion connected to the return spring (8).

[0013] Preferably, the area where the height of the electromagnet (10) is lower than the specific height of the armature (6) is within the range where the top surface of the electromagnet (10) is located at 1 / 2 to 1 / 3 of the height of the armature (6).

[0014] Preferably, the reverse force applying part also includes a buffer spring (9), and the buffer spring (9) is arranged between the armature (6) and the blocking pressing plate (5), and is used to buffer the impact force between the armature (6) and the blocking pressing plate (5) during the operation of the solenoid valve.

[0015] The second aspect of the present invention is to provide an application of the reversibly forced impurity fluid solenoid valve of the first aspect in a flushing and sewage discharge system of a quasi-vacuum toilet, wherein the quasi-vacuum toilet flushing and sewage discharge system comprises: a flushing toilet bowl (12) with a flushing function, a feces crushing system, and a reversibly forced impurity fluid solenoid valve; wherein a nozzle (13) for spraying flushing liquid is installed on the top surface of one side of the flushing toilet bowl (12), the feces crushing system is installed at the bottom of the flushing toilet bowl (12), the inlet of the feces crushing system is fixedly connected to the bottom of the flushing toilet bowl (12), and the outlet of the feces crushing system is connected to the solenoid valve (15); the fluid inlet (1) of the solenoid valve (15) is connected to the feces crushing system, and the fluid outlet (2) of the solenoid valve (15) is connected to the sewage discharge port (16) of the flushing toilet bowl (12).

[0016] Preferably, the feces crushing system comprises a feces crushing pump (14) for crushing and discharging feces, wherein the inlet of the feces crushing pump (14) is fixedly connected to the bottom of the flush toilet bowl (12), and the outlet of the feces crushing pump (14) is connected to the solenoid valve (15); the fluid inlet (1) of the solenoid valve (15) is connected to the feces crushing pump (14), and the fluid outlet (2) of the solenoid valve (15) is connected to the sewage outlet (16) of the flush toilet bowl (12).

[0017] The third aspect of the present invention is to provide a toilet flushing and sewage discharge method based on the vacuum toilet flushing and sewage discharge system of the second aspect, comprising:

[0018] S1, the system controls the nozzle (13) to start spraying the flushing liquid, and at the same time energizes the solenoid valve (15). When the electromagnet (10) is energized, the electromagnet (10) is controlled by the magnetic force after being energized to drive the armature (6) to move and fix the armature (6) in a specific position; the direction of the force applied by the return spring (8) to the armature (6) by stretching is consistent with the direction of the force applied by the electromagnet (10) to attract the armature (6), both of which push the blocking pressing plate (5) and the diaphragm (4) to close the solenoid valve;

[0019] S2, after confirming that the quantitative flushing liquid spraying is completed, the feces crushing system is controlled to work, and when a predetermined time has passed or when it is determined that the rotation speed of the feces crushing system reaches a peak value, the solenoid valve (15) is powered off;

[0020] S3, when the pressure of the accumulated slurry waste fluid in the feces pulverizing system reaches a certain value, under the action of the slurry fluid pressure, the diaphragm (4), the blocking pressing plate (5), the armature (6) and the return spring (8) in the solenoid valve (15) are pushed open, and the fluid passage between the fluid inlet (1) and the fluid outlet (2) is opened, and the pulverized slurry waste fluid instantly reaches the sewage outlet (16) through the fluid passage and is discharged;

[0021] S4, as the waste fluid in the feces crushing system is discharged instantly, a large vacuum negative pressure difference is instantly formed at the entrance of the feces crushing system, and the flushing liquid gathered at the entrance of the feces crushing system is instantly sucked into the feces crushing system along with the waste. After the waste is crushed into a slurry-like waste fluid by the feces crushing system, it is quickly discharged to the sewage outlet (16) through the solenoid valve (15);

[0022] S5, continue S4 until all the flushing liquid in the flushing toilet bowl (12) is emptied and the slurry waste fluid in the feces crushing system is immediately emptied, and the fluid entering the solenoid valve (15) loses pressure at this time, so that the fluid entering the solenoid valve (15) does not have enough pressure to push open the diaphragm (4), the blocking pressing plate (5), the armature (6) and the reset spring (8). Under the action of the reset spring (8), the armature (6), the blocking pressing plate (5) and the diaphragm (4) are lowered and reset again to block the intercepting section (11) of the solenoid valve (15). The solenoid valve (15) returns to the normal off-resistance off state, and the vacuum toilet flushing and sewage system returns to the standby state before flushing the flushing toilet bowl (12).

[0023] Preferably, the predetermined time is in milliseconds or seconds.

[0024] A fourth aspect of the present invention is to provide an electronic device, comprising a processor and a memory, wherein the memory stores a plurality of instructions, and the processor is used to read the instructions and execute the method as described in the third aspect.

[0025] A fifth aspect of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a plurality of instructions, and the plurality of instructions can be read by a processor and executed by the method described in the third aspect.

[0026] The electromagnetic valve, system, method, electronic device and readable storage medium of the present invention have the following beneficial effects:

[0027] (1) Based on the pressure sewage discharge condition, a fast-response impurity direct-acting fluid solenoid valve with reversible force is designed and applied to perform vacuum suction or flushing actions in scenarios requiring high-speed response, including toilet scenarios, to provide an efficient and universal solution for impurity fluid treatment, including fecal sewage treatment technology.

[0028] (2) The solenoid valve has three states, instead of only two states, on and off, like the solenoid valve in the prior art. This broadens the application scope of the fluid solenoid valve in simulated dry pump suction application scenarios and improves the control accuracy and effect by refining the control process segment.

[0029] (3) By further arranging a buffer spring in the reverse force application part to buffer the impact force between the armature and the blocking pressing piece during the operation of the solenoid valve, the service life of the entire solenoid valve can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 This is a structural diagram of the overall device of the impurity fluid solenoid valve capable of reversibly applying force according to an embodiment of the present invention;

[0032] Figure 2 This is a structural diagram of the overall device of the impurity fluid solenoid valve capable of applying reverse force in a fluid passing state according to an embodiment of the present invention;

[0033] Figure 3A schematic diagram of the structure of a quasi-vacuum toilet flushing and drainage system under the application conditions of the impurity fluid solenoid valve capable of reversibly applying force provided by an embodiment of the present invention in the quasi-vacuum toilet flushing and drainage system;

[0034] Figure 4 This is a structural diagram of an electronic device provided in an embodiment of the present invention.

[0035] Reference numerals:

[0036] 1. Fluid inlet; 2. Fluid outlet; 3. Valve body cavity; 4. Diaphragm; 5. Sealing press piece;

[0037] 6. Armature; 7. Armature movement chamber; 8. Return spring; 9. Buffer spring; 10. Electromagnet;

[0038] 11. Intercepting section; 12. Toilet bowl; 13. Nozzle; 14. Feces crushing pump;

[0039] 15. Solenoid valve for impurity fluid with reversible force; 16. Drain port. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments 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.

[0041] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] like Figure 1-2As shown, this embodiment provides an impurity fluid solenoid valve 15 capable of reverse force application, comprising: a reverse force application portion and a valve body portion; the reverse force application portion is orthogonal to the valve body portion or is cast at a certain angle; under different conditions, the reverse force application portion opens or closes the valve body portion;

[0044] In this embodiment, the method of casting at a certain angle is adopted because the armature cavity and the valve body are at a certain angle, which is more conducive to the rapid passage of water.

[0045] The valve body portion includes a valve body 3, one end of the valve body 3 is provided with a fluid inlet 1, the other end is provided with a fluid outlet 2, a raised opening is provided in the middle of the valve body 3, and the top of the raised opening is a cut-off section 11; the cut-off section 11 has two controlled working states, namely, an unclosed working state in which the fluid is connected to the fluid inlet 1 and the fluid outlet 2 after the solenoid valve is powered off, and a closed working state after the solenoid valve is powered on;

[0046] The reverse force-applying part includes a diaphragm 4, a blocking pressing piece 5, an armature 6, a return spring 8 and an electromagnet 10; wherein the diaphragm 4 is arranged between the cut-off section 11 and the blocking pressing piece 5, so that the cut-off section 11 can cut off the flow of fluid between the fluid inlet 1 and the fluid outlet 2 under the common pressure applied by the blocking pressing piece 5 and the diaphragm 4; the blocking pressing piece 5 is vertically connected to the return spring 8 through a contact portion arranged in the center, the lower end of the return spring 8 is elastically contacted and connected with the top surface of the armature 6, and the electromagnet 10 is arranged around a specific area outside the armature 6, and the electromagnet 10 is controlled by the magnetic force after power is turned on to drive the armature 6 to move and fix the armature 6 in a specific position; the return spring 8 exerts a force direction on the armature 6 by stretching, which is consistent with the force direction of the electromagnet 10 attracting the armature 6, both of which push the blocking pressing piece 5 and the diaphragm 4 to close the solenoid valve. The specific position is the position where the armature 6 is closest to the valve body 3, that is, the bottom (if placed upright), so that the reversibly forceable impurity fluid solenoid valve 15 is in a closed state and can resist the pressure transmitted from one end of the fluid inlet 1.

[0047] In this embodiment, the working principle of the electromagnet is as follows: when the electromagnet 10 is energized, the electromagnet 10 is controlled by the magnetic force after energization to drive the armature 6 to move or fix the armature 6 in a specific position; the direction of the force applied by the reset spring 8 to the armature 6 by stretching is consistent with the direction of the force applied by the electromagnet 10 to attract the armature 6, both of which push the blocking press piece 5 and the diaphragm 4 to close the solenoid valve; even if the impurity liquid has pressure, it can be sealed by the solenoid valve; and to open the solenoid valve, when the electromagnet 10 is powered off, the pressure of the liquid pushes the armature 6 and the diaphragm 4 open under the action of the reset spring 8 and passes through the solenoid valve; when the liquid loses pressure, the reset spring 8 pushes the armature 6 and the diaphragm 5 to close the solenoid valve. In the early stage of the solenoid valve design, the magnetic field strength of the electromagnet, the length and elastic coefficient of the reset spring, and the key parameters such as the weight and volume of the diaphragm and the blocking press piece are determined according to the application scenario (such as the toilet use scenario of the present invention).

[0048] Therefore, the solenoid valve has three states, instead of only two states of on and off like the solenoid valve in the prior art, thereby broadening the application scope of the fluid solenoid valve in the simulated dry pump suction application scenario and improving the control accuracy and effect by refining the control process segment.

[0049] As a preferred embodiment, the specific area includes an area where the height of the electromagnet 10 is lower than the specific height of the armature 6, and the cut-off section 11 is in the unclosed state, and the top surface of the electromagnet 10 is lower than the top surface of the armature 6 or at least flush with the top surface of the armature 6.

[0050] As a preferred embodiment, it also includes an armature movement chamber 7, the armature 6 is arranged in the armature movement chamber 7, the armature movement chamber 7 is annularly arranged between the armature 6 and the return spring 8 and is closed at the top end, and the top end has a fastening contact portion connected to the return spring 8.

[0051] As a preferred embodiment, the area where the height of the electromagnet 10 is lower than the specific height of the armature 6 is within the range where the top surface of the electromagnet 10 is located at 1 / 2 to 1 / 3 of the height of the armature 6. Of course, those skilled in the art should know that other appropriate height ratio ranges can be set according to different application scenarios, all of which are within the protection scope of the present invention, as long as the technical effect that the force direction of the return spring 8 on the armature 6 is consistent with the force direction of the electromagnet 10 attracting the armature 6 can be ensured, which is an important guarantee for the working effect of the electromagnetic valve.

[0052] As a preferred embodiment, the reverse force applying part also includes a buffer spring 9, which is arranged between the armature 6 and the blocking pressing plate 5, and is used to buffer the impact force between the armature 6 and the blocking pressing plate 5 during the operation of the solenoid valve, thereby improving the service life of the entire solenoid valve.

[0053] like Figure 3 As shown, the second aspect of the present invention is to provide an application of the reversibly-forced impurity fluid solenoid valve of the first aspect in a flushing and sewage discharge system of a quasi-vacuum toilet, wherein the quasi-vacuum toilet flushing and sewage discharge system comprises: a flushing toilet bowl 12 with a flushing function, a feces crushing system and a reversibly-forced impurity fluid solenoid valve; wherein a nozzle 13 for spraying flushing liquid is installed on the top surface of one side of the flushing toilet bowl 12, the feces crushing system is installed at the bottom of the flushing toilet bowl 12, the inlet of the feces crushing system is fixedly connected to the bottom of the flushing toilet bowl 12, and the outlet of the feces crushing system is connected to the solenoid valve 15; the fluid inlet 1 of the solenoid valve 15 is connected to the feces crushing system, and the fluid outlet 2 of the solenoid valve 15 is connected to the sewage discharge port 16 of the flushing toilet bowl 12.

[0054] As a preferred embodiment, the feces crushing system includes a feces crushing pump 14 for crushing and discharging feces, wherein the inlet of the feces crushing pump 14 is fixedly connected to the bottom of the flush toilet bowl 12, and the outlet of the feces crushing pump 14 is connected to the solenoid valve 15; the fluid inlet 1 of the solenoid valve 15 is connected to the feces crushing pump 14, and the fluid outlet 2 of the solenoid valve 15 is connected to the sewage outlet 16 of the flush toilet bowl 12.

[0055] This embodiment also provides a toilet flushing and sewage discharge method based on a vacuum-like toilet flushing and sewage discharge system, comprising:

[0056] S1, the system controls the nozzle 13 to start spraying the flushing liquid, and at the same time energizes the solenoid valve 15. When the electromagnet 10 is energized, the electromagnet 10 is controlled by the magnetic force after being energized to drive the armature 6 to move or fix the armature 6 in a specific position; the direction of the force applied by the return spring 8 to the armature 6 by stretching is consistent with the direction of the force applied by the electromagnet 10 to attract the armature 6, both of which push the blocking pressing sheet 5 and the diaphragm 4 to close the solenoid valve; even if the impurity liquid has pressure, it can be sealed by the solenoid valve, thereby ensuring that the flushing liquid will not pass through the feces crushing system and be discharged from the solenoid valve 15 to the sewage outlet 16;

[0057] S2, after confirming that the quantitative flushing liquid spraying is completed, the feces crushing system is controlled to work, and when a predetermined time has passed or when it is determined that the rotation speed of the feces crushing system reaches a peak value, the solenoid valve 15 is powered off;

[0058] S3, when the pressure of the accumulated slurry waste fluid in the feces crushing system reaches a certain value, under the action of the slurry fluid pressure, the diaphragm 4, the blocking pressing plate 5, the armature 6 and the return spring 8 in the solenoid valve 15 are pushed open, and the fluid passage between the fluid inlet 1 and the fluid outlet 2 is opened, and the crushed slurry waste fluid instantly reaches the sewage outlet 16 through the fluid passage and is discharged;

[0059] S4, since the waste fluid in the feces crushing system is discharged instantly, a large vacuum negative pressure difference is instantly formed at the entrance of the feces crushing system, and the flushing liquid gathered at the entrance of the feces crushing system is instantly sucked into the feces crushing system with the waste, and the waste is crushed into a slurry-like waste fluid by the feces crushing system and then quickly discharged to the sewage outlet 16 through the solenoid valve 15;

[0060] S5, continue S4 until all the flushing liquid in the flushing toilet bowl 12 is emptied and the slurry waste fluid in the feces crushing system is immediately emptied, and the fluid entering the solenoid valve 15 loses pressure at this time, so that the fluid entering the solenoid valve 15 does not have enough pressure to push open the diaphragm 4, the blocking pressing plate 5, the armature 6 and the reset spring 8. Under the action of the reset spring 8, the armature 6, the blocking pressing plate 5 and the diaphragm 4 are lowered and reset again to block the cut-off section 11 of the solenoid valve 15. The solenoid valve 15 returns to the normal off-resistance off state, and the vacuum toilet flushing and drainage system returns to the standby state before flushing the flushing toilet bowl 12.

[0061] As a preferred implementation, the predetermined time is in milliseconds or seconds.

[0062] The present invention also provides a memory storing a plurality of instructions, wherein the instructions are used to implement the method as in the first embodiment.

[0063] like Figure 4 As shown, the present invention also provides an electronic device, including a processor 301 and a memory 302 connected to the processor 301, the memory 302 stores a plurality of instructions, and the instructions can be loaded and executed by the processor so that the processor can execute the method as in the first embodiment.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A reversible impurity fluid solenoid valve (15), characterized in that: include: A reverse force applying part and a valve body; the reverse force applying part and the valve body are cast orthogonally or at a certain angle; under different conditions, the reverse force applying part opens or closes the valve body; The valve body portion comprises a valve body (3), one end of the valve body (3) is provided with a fluid inlet (1), the other end of the valve body (3) is provided with a fluid outlet (2), a raised opening is provided in the middle of the valve body (3), the top of the raised opening is a cut-off section (11); the cut-off section (11) has two controlled working states, namely, an unclosed working state in which the fluid is connected to the fluid inlet (1) and the fluid outlet (2) after the solenoid valve is powered off, and a closed working state after the solenoid valve is powered on; The reverse force-applying portion comprises a diaphragm (4), a blocking pressing piece (5), an armature (6), a return spring (8) and an electromagnet (10); wherein the diaphragm (4) is arranged between the cut-off section (11) and the blocking pressing piece (5), so that the cut-off section (11) can cut off the flow of fluid between the fluid inlet (1) and the fluid outlet (2) under the common pressure applied by the blocking pressing piece (5) and the diaphragm (4); the blocking pressing piece (5) is vertically connected to the return spring (8) through a contact portion arranged at the center, The lower end of the return spring (8) is elastically connected to the top surface of the armature (6), and the electromagnet (10) is arranged around a specific area outside the armature (6). The electromagnet (10) is controlled by the magnetic force after power is turned on to drive the armature (6) to move or fix the armature (6) in a specific position; the direction of the force applied by the return spring (8) to the armature (6) by stretching is consistent with the direction of the force applied by the electromagnet (10) to attract the armature (6), both of which push the sealing plate (5) and the diaphragm (4) to close the solenoid valve.

2. The impurity fluid solenoid valve (15) capable of reversibly applying force according to claim 1, characterized in that: The magnetic field strength of the electromagnet (10) of the impurity fluid solenoid valve (15) capable of applying reversible force, the length and elastic coefficient of the return spring (8), and the weight and volume of the diaphragm (4) and the sealing pressing plate (5) are determined according to the application scenario.

3. The impurity fluid solenoid valve (15) capable of reversibly applying force according to claim 2, characterized in that: The specific area includes an area where the height of the electromagnet (10) is lower than the specific height of the armature (6), and when the shut-off section (11) is in the unclosed state, the top surface of the electromagnet (10) is lower than the top surface of the armature (6) or at least flush with the top surface of the armature (6).

4. The impurity fluid solenoid valve (15) capable of reversibly applying force according to claim 3, characterized in that: It also includes an armature movement chamber (7), the armature (6) is arranged in the armature movement chamber (7), the armature movement chamber (7) is annularly arranged between the armature (6) and the return spring (8) and is closed at the top end, and the top end has a fastening contact portion connected to the return spring (8).

5. The impurity fluid solenoid valve (15) capable of reversibly applying force according to claim 4, characterized in that: The area where the height of the electromagnet (10) is lower than the specific height of the armature (6) is within the range where the top surface of the electromagnet (10) is located at 1 / 2 to 1 / 3 of the height of the armature (6).

6. The impurity fluid solenoid valve (15) capable of reversibly applying force according to claim 5, characterized in that: The reverse force applying part also includes a buffer spring (9), which is arranged between the armature (6) and the blocking pressing plate (5) and is used to buffer the impact force between the armature (6) and the blocking pressing plate (5) during the operation of the solenoid valve.

7. Application of the impurity fluid solenoid valve capable of reversible force application as claimed in any one of claims 1 to 6 in a flushing and drainage system of a vacuum toilet, characterized in that: The flushing and sewage discharge system of the vacuum toilet comprises: a flushing toilet bowl (12) with a flushing function, a feces crushing system and a foreign fluid electromagnetic valve capable of reversibly applying force; wherein a nozzle (13) for spraying flushing liquid is installed on the top surface of one side of the flushing toilet bowl (12), the feces crushing system is installed at the bottom of the flushing toilet bowl (12), the inlet of the feces crushing system is fixedly connected to the bottom of the flushing toilet bowl (12), and the outlet of the feces crushing system is connected to the electromagnetic valve (15); the fluid inlet (1) of the electromagnetic valve (15) is connected to the feces crushing system, and the fluid outlet (2) of the electromagnetic valve (15) is connected to the sewage discharge port (16) of the flushing toilet bowl (12).

8. The use according to claim 7, characterized in that: The feces crushing system comprises a feces crushing pump (14) for crushing and discharging feces, wherein the inlet of the feces crushing pump (14) is fixedly connected to the bottom of the flush toilet bowl (12), and the outlet of the feces crushing pump (14) is connected to the solenoid valve (15); the fluid inlet (1) of the solenoid valve (15) is connected to the feces crushing pump (14), and the fluid outlet (2) of the solenoid valve (15) is connected to the sewage outlet (16) of the flush toilet bowl (12).

9. A toilet flushing and sewage discharge method based on the vacuum toilet flushing and sewage discharge system according to any one of claims 7-8, characterized in that: include: S1, the system controls the nozzle (13) to start spraying the flushing liquid, and at the same time energizes the solenoid valve (15). When the electromagnet (10) is energized, the electromagnet (10) is controlled by the magnetic force after being energized to drive the armature (6) to move or fix the armature (6) at a specific position; the direction of the force applied by the return spring (8) to the armature (6) by stretching is consistent with the direction of the force applied by the electromagnet (10) to attract the armature (6), both of which push the blocking pressing plate (5) and the diaphragm (4) to close the solenoid valve; S2, after confirming that the quantitative flushing liquid spraying is completed, the feces crushing system is controlled to work, and when a predetermined time has passed or when it is determined that the rotation speed of the feces crushing system reaches a peak value, the solenoid valve (15) is powered off; S3, when the pressure of the accumulated slurry waste fluid in the feces pulverizing system reaches a certain value, under the action of the slurry fluid pressure, the diaphragm (4), the blocking pressing plate (5), the armature (6) and the return spring (8) in the solenoid valve (15) are pushed open, and the fluid passage between the fluid inlet (1) and the fluid outlet (2) is opened, and the pulverized slurry waste fluid instantly reaches the sewage outlet (16) through the fluid passage and is discharged; S4, as the waste fluid in the feces crushing system is discharged instantly, a large vacuum negative pressure difference is instantly formed at the entrance of the feces crushing system, and the flushing liquid gathered at the entrance of the feces crushing system is instantly sucked into the feces crushing system along with the waste. After the waste is crushed into a slurry-like waste fluid by the feces crushing system, it is quickly discharged to the sewage outlet (16) through the solenoid valve (15); S5, continue S4 until all the flushing liquid in the flushing toilet bowl (12) is emptied and the slurry waste fluid in the feces crushing system is immediately emptied, and the fluid entering the solenoid valve (15) loses pressure at this time, so that the fluid entering the solenoid valve (15) does not have enough pressure to push open the diaphragm (4), the blocking pressing plate (5), the armature (6) and the reset spring (8). Under the action of the reset spring (8), the armature (6), the blocking pressing plate (5) and the diaphragm (4) are lowered and reset again to block the intercepting section (11) of the solenoid valve (15). The solenoid valve (15) returns to the normal off-resistance off state, and the vacuum toilet flushing and sewage system returns to the standby state before flushing the flushing toilet bowl (12).

10. The toilet flushing and sewage discharge method according to claim 9, characterized in that: The predetermined time is in milliseconds or seconds.

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