Novel flow switch type release valve

Abstract

The utility model belongs to the technical field of household appliances, and particularly relates to a novel flow switch type throwing valve which comprises a pipeline assembly, a water inlet and a water outlet are formed in the two ends of the pipeline assembly respectively, a fluid channel communicated with the water inlet and the water outlet is formed in the pipeline assembly, and a detergent throwing opening communicated with the fluid channel is formed in the pipeline assembly. A movable part is arranged in the pipeline assembly, and the movable part does linear motion relative to the pipeline assembly under the thrust action of fluid in the fluid channel; the movable part comprises a magnetic part, a magnetic induction switch matched with the magnetic part is arranged outside the pipeline assembly, and when water flow is formed in the fluid channel, the magnetic induction switch sends out a signal. The push type flow switch is used for judging whether water flow exists or not, the gap between the movable part and the inner wall of the pipeline assembly is enlarged, and the possibility of accumulation of foreign matter is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of household appliances, and in particular relates to a novel flow switch type delivery valve. Background Art

[0002] The patent CN202321810445.7 previously applied by the applicant discloses a new type of flow switch type delivery valve, including a water inlet, a water outlet, a detergent delivery port, and a pipeline assembly arranged between the water inlet and the water outlet, wherein a fluid channel is formed in the pipeline assembly, and a flow meter assembly, a solenoid valve for controlling the fluid on and off, a pressure relief port, and a pressure sensor are arranged on the pipeline assembly, and a resistance probe for monitoring the detergent concentration in the pipeline is arranged near the detergent delivery port on the pipeline assembly, so as to monitor the amount of detergent in the pipeline from the outside and improve the comprehensive performance of the pipeline. Among them, the flow meter assembly includes a rotor arranged in the water inlet pipeline, and a PCB board extending outside the water inlet pipeline to sense the rotation of the rotor to output corresponding pulses, and the side of the rotor close to the water inlet is connected to the shaft seat. When the applicant further applies the delivery device of the above structure to deliver detergent, due to the small gap between the rotor and the valve body cavity wall, when it is not working, foreign matter adheres to the rotor, causing the rotor to get stuck. In addition, when the rotor works for a long time, the release part between the top of the rotor and the valve body will wear out, and after wearing to a certain extent, it will get stuck and fail. Utility Model Content

[0003] The utility model aims to overcome the shortcomings and deficiencies of the prior art and to provide a novel flow switch type delivery valve.

[0004] The technical solution adopted by the utility model is as follows: a new flow switch type delivery valve, including a pipeline component, the two ends of the pipeline component respectively constitute a water inlet and a water outlet, a fluid channel connected to the water inlet and the water outlet is formed in the pipeline component, a detergent delivery port connected to the fluid channel is provided on the pipeline component, and a movable part is provided in the pipeline component, and under the thrust of the fluid in the fluid channel, the movable part performs a linear motion relative to the pipeline component;

[0005] The movable part includes a magnetic component, and the pipeline assembly is provided with a magnetic induction switch matched with the magnetic component. When water flow is formed in the fluid channel, the magnetic induction switch sends a signal.

[0006] A pressure piece seat and a fixing seat are fixedly provided in the pipeline assembly, and a first fluid opening and a second fluid opening are respectively provided on the pressure piece seat and the fixing seat;

[0007] The movable part is arranged between the pressure part seat and the fixed seat, and a pressure part is arranged between the pressure part seat and the movable part.

[0008] The movable part has a cylindrical mating part and a first limiting step with a conical surface. The second fluid port has a round hole part and a second limiting step with a conical surface. The round hole part is adapted to the cylindrical mating part. Only under the thrust of the pressure part, the cylindrical mating part is located within the round hole part and the first limiting step and the second limiting step form a limiting fit.

[0009] The movable part has a limiting rod, and the limiting rod is in clearance fit with the first fluid port.

[0010] The limiting rod is provided with an overflow groove.

[0011] The end face of the pressure part seat close to the fixed seat axially protrudes circumferentially around the first fluid port to form a first pressure part limiting ring. The bottom of the limiting rod radially protrudes circumferentially to form a second pressure part limiting ring. The pressure part is sleeved outside the limiting rod and its two ends are respectively sleeved on the first pressure part limiting ring and the second pressure part limiting ring to form positioning.

[0012] The pipeline assembly includes a water inlet pipe. The water inlet is arranged at one end of the water inlet pipe. The pressure part seat is integrally formed on the inner wall of the water inlet pipe. The fixed seat is separately arranged from the water inlet pipe. The water inlet constitutes the installation port for the movable part and the fixed seat.

[0013] The inner wall of the water inlet pipe is provided with a third limiting step. A non-welded cover is connected inside the water inlet pipe. The fixed seat forms a fixed connection with the water inlet pipe by being limited between the third limiting step and the non-welded cover.

[0014] A first check valve is fixedly arranged inside the water inlet pipe, and the first check valve is located between the fixed seat and the water inlet.

[0015] A filter screen is fixedly arranged inside the water inlet pipe, and the filter screen is located at the water inlet.

[0016] The magnetic induction switch is a reed switch.

[0017] The beneficial effects of the present utility model are as follows: The present utility model uses a push-type flow switch to judge the presence or absence of water flow, increasing the gap between the movable part and the inner wall of the pipeline assembly, reducing the possibility of foreign matter accumulation. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, obtaining other drawings without creative efforts still belongs to the scope of the present utility model.

[0019] Figure 1Stereoscopic view of an embodiment of the present utility model;

[0020] Figure 2 Cross-sectional view of the water inlet pipe part in an embodiment of the present utility model;

[0021] Figure 3 For Figure 2 Enlarged schematic view of part A in

[0022] Figure 4 Structural schematic view of the movable part in an embodiment of the present utility model;

[0023] Figure 5 Cross-sectional view of the movable part in an embodiment of the present utility model;

[0024] Figure 6 Cross-sectional view of the fixed seat in an embodiment of the present utility model;

[0025] Figure 7 Cross-sectional view of the water inlet pipe in an embodiment of the present utility model;

[0026] In the figure, water inlet - 1, water outlet - 2, spring seat - 3, first fluid through port - 301, first spring limit ring - 302, fixed seat - 4, second fluid through port - 401, round hole part - 402, second limit step - 403, movable part - 5, magnetic component - 501, cylindrical mating part - 502, first limit step - 503, limit rod - 504, flow-through groove - 505, second spring limit ring - 506, magnetic induction switch - 6, pressure part - 7, water inlet pipe - 8, third limit step - 801, weld-free cover - 9, first check valve - 10, filter screen - 11, intermediate pipe - 12, water outlet pipe - 13, solenoid valve - 14, pressure relief pipe - 15, pressure detection device - 16, disinfectant liquid delivery pipe - 17, laundry detergent delivery pipe - 18, resistance probe - 19. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] It should be noted that all the expressions using "first" and "second" in the embodiments of the present utility model are used to distinguish two entities or parameters with the same name but different, so "first" and "second" are only for the convenience of expression and should not be construed as a limitation on the embodiments of the present utility model. This will not be elaborated one by one in the subsequent embodiments.

[0029] The directional and positional terms mentioned in this utility model, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only references to the directions or positions in the attached drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, rather than limiting the protection scope of this utility model.

[0030] A novel flow switch type dosing valve, comprising a pipeline assembly. The pipeline assembly includes a water inlet pipe 8, an intermediate pipeline 12, and a water outlet pipe 13 connected in sequence. The water inlet pipe 8 and the water outlet pipe 13 are arranged in parallel with opposite internal flow directions, and the intermediate pipeline 12 is vertically connected therebetween. The outer ends of the water inlet pipe 8 and the water outlet pipe 13 respectively form a water inlet 1 and a water outlet 2.

[0031] One end of the water inlet pipe 8 connected to the intermediate pipeline 12 is connected with a solenoid valve 14 for controlling the on-off of the fluid. A sterilizing liquid dosing pipe 17, a laundry detergent dosing pipe 18, and two resistance probes 19 are connected to the water outlet pipe 13. The sterilizing liquid dosing pipe 17 and the laundry detergent dosing pipe 18 are respectively used to connect to a sterilizing liquid conveying pipeline and a laundry detergent conveying pipeline with conveying power. Second check valves are provided in both the sterilizing liquid dosing pipe 17 and the laundry detergent dosing pipe 18 to enable the one-way conveyance of the fluid in the sterilizing liquid dosing pipe 17 and the laundry detergent dosing pipe 18, so as to achieve that when and only when the conveying power works, the second check valve opens for conveyance. The two resistance probes 19 are respectively arranged near the outlets of the sterilizing liquid dosing pipe 17 and the laundry detergent dosing pipe 18, and the residual in the pipe is monitored by measuring the resistance in the pipe. A pressure relief pipe 15 and a pressure detection device 16 are connected to the intermediate pipeline 12. When the solenoid valve 14 is closed and stops working, a third check valve is fixed in the pressure relief pipe 15. The water flow in the intermediate pipeline 12 and the water outlet pipe 13 still needs to be emptied from the water outlet 2, which will form a negative pressure. At this time, the third check valve quickly opens to admit air to balance the pressure in the intermediate pipeline 12 and the water outlet pipe 13. The external connections of the sterilizing liquid and laundry detergent dosing ports are relatively viscous liquids, so it is not easy to enter the pipe due to negative pressure. The pressure detection device 16 is used to detect the real-time pressure in the pipeline.

[0032] As Figure 2 shown, a filter screen 11, a first check valve 10, and a flow switch are sequentially arranged in the water inlet pipe 8. As Figure 3 shown, the flow switch includes a movable part 5. Under the action of the fluid thrust in the fluid passage, the movable part 5 makes a linear motion relative to the pipeline assembly. The movable part 5 includes a magnetic component 501, and a pressure part 7 is provided. The pressure part 7 forms a force on the movable part 5 opposite to the fluid direction in the fluid passage. As Figure 1 shown, a magnetic induction switch 6 matched with the magnetic component 501 is arranged outside the pipeline assembly. When a water flow is formed in the fluid passage, the magnetic induction switch 6 emits a signal.

[0033] Specifically, the magnetic induction switch 6 uses a reed switch. A reed switch, also known as a magnetic reed switch, has two metal reed contacts made of soft magnetic materials inside. When the fluid in the fluid passage pushes the moving part 5 to be in circulation, the magnetic component 501 approaches, causing the two metal reed contacts to attract and close each other, thus conducting the circuit and then outputting a signal.

[0034] Further, a spring seat 3 and a fixed seat 4 are fixedly arranged inside the pipeline assembly. The spring seat 3 and the fixed seat 4 are respectively provided with a first fluid port 301 and a second fluid port 401; the moving part 5 is arranged between the spring seat 3 and the fixed seat 4, and the pressure part 7 is a spring arranged between the spring seat 3 and the moving part 5. The spring seat 3 is composed of an intermediate limiting ring and a plurality of connecting bars connecting the intermediate limiting ring and the inner wall of the water inlet pipe 8. Third fluid ports are formed between the connecting bars. Figure 2 、 Figure 3 In, the cross-sectional area is at the connecting bars of the spring seat 3.

[0035] Further, as Figure 4 、 Figure 5 shown, the moving part 5 has a cylindrical mating part 502 and a first limiting step 503 with a conical surface. As Figure 6 shown, the second fluid port 401 has a circular hole part 402 and a second limiting step 403 with a conical surface. The circular hole part 402 is adapted to the cylindrical mating part 502. Only under the thrust of the pressure part 7, the cylindrical mating part 502 is located in the circular hole part 402 and the first limiting step 503 and the second limiting step 403 form a limiting fit. The cylindrical mating part 502 further reduces the possibility of foreign object extrusion, and the cylindrical mating part 502 cooperates with the circular hole part 402 of the fixed seat 4, so that the entire plane of the moving part 5 receives the impact of water pressure, avoiding the situation of foreign object jamming.

[0036] Further, the moving part 5 has a limiting rod 504, and the limiting rod 504 has a clearance fit with the first fluid port 301. This reduces the occurrence of wear. Further, an over-flow groove 505 is provided on the limiting rod 504 to increase the over-flow area.

[0037] Further, as Figure 7 shown, the end face of the spring seat 3 close to the fixed seat 4 axially protrudes circumferentially around the first fluid port 301 to form a first spring limiting ring 302. The bottom of the limiting rod 504 protrudes radially circumferentially to form a second spring limiting ring 506. The pressure part 7 is sleeved outside the limiting rod 504 and its two ends are respectively sleeved on the first spring limiting ring 302 and the second spring limiting ring 506 to form positioning.

[0038] Further, the spring seat 3 is integrally formed on the inner wall of the water inlet pipe 8, the fixed seat 4 is separately arranged from the water inlet pipe 8, and the water inlet 1 constitutes the installation port of the movable member 5 and the fixed seat 4. Further, a third limiting step 801 is provided on the inner wall of the water inlet pipe 8, a solderless cover 9 is connected in the water inlet pipe 8, and the fixed seat 4 is fixedly connected to the water inlet pipe 8 by being limited between the third limiting step 801 and the solderless cover 9. With such a setting, when assembling this embodiment, when installing the flow switch, each part can be sequentially inserted from the water inlet 1.

[0039] The germicidal liquid delivery pipe 17 and the laundry detergent delivery pipe 18 are vertically connected to the water outlet pipe 13 and arranged on the same side, and two resistance probes 19 are vertically connected to the water outlet pipe 13 and located opposite to the germicidal liquid delivery pipe 17 and the laundry detergent delivery pipe 18. Two second check valves are stacked in both the germicidal liquid delivery pipe 17 and the laundry detergent delivery pipe 18 to form a double leak-proof effect.

[0040] The foregoing disclosure is only for the preferred embodiments of the present invention, and of course it cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A novel flow switch type delivery valve, comprising a pipe assembly, wherein two ends of the pipe assembly respectively form a water inlet (1) and a water outlet (2), a fluid channel connecting the water inlet (1) and the water outlet (2) is formed in the pipe assembly, and a detergent delivery port connecting the fluid channel is provided on the pipe assembly, characterized in that: A movable part (5) is provided in the pipeline assembly, and under the thrust of the fluid in the fluid channel, the movable part (5) performs a linear motion relative to the pipeline assembly; The movable part (5) includes a magnetic component (501) and is provided with a pressure component (7). The pressure component (7) exerts a force on the movable part (5) in a direction opposite to the direction of the fluid in the fluid channel. A magnetic induction switch (6) that cooperates with the magnetic component (501) is provided outside the pipeline assembly. When a water flow is formed in the fluid channel, the magnetic induction switch (6) sends a signal.

2. The novel flow switch type delivery valve according to claim 1 is characterized in that: A spring seat (3) and a fixing seat (4) are fixedly provided in the pipeline assembly, and a first fluid opening (301) and a second fluid opening (401) are respectively provided on the spring seat (3) and the fixing seat (4); The movable member (5) is arranged between the spring seat (3) and the fixed seat (4), and the pressure member (7) is a spring arranged between the spring seat (3) and the movable member (5).

3. The novel flow switch type delivery valve according to claim 2 is characterized in that: The movable member (5) has a cylindrical matching portion (502) and a first limiting step (503) on a conical surface; the second fluid passage (401) has a circular hole portion (402) and a second limiting step (403) on a conical surface; the circular hole portion (402) is matched with the cylindrical matching portion (502); only under the thrust of the pressure member (7), the cylindrical matching portion (502) is located in the circular hole portion (402) and the first limiting step (503) forms a limiting match with the second limiting step (403).

4. The novel flow switch type delivery valve according to claim 2 is characterized in that: The movable part (5) has a limiting rod (504), and the limiting rod (504) is clearance-matched with the first fluid passage (301).

5. The novel flow switch type delivery valve according to claim 4 is characterized in that: The limiting rod (504) is provided with a flow groove (505).

6. The novel flow switch type delivery valve according to claim 4 is characterized in that: The end surface of the spring seat (3) close to the fixed seat (4) is axially protruded around the first fluid passage (301) to form a first spring limiting ring (302), and the bottom of the limiting rod (504) is radially protruded around the circumference to form a second spring limiting ring (506). The pressure piece (7) is sleeved outside the limiting rod (504) and its two ends are respectively sleeved on the first spring limiting ring (302) and the second spring limiting ring (506) to form a positioning.

7. The novel flow switch type delivery valve according to claim 2 is characterized in that: The pipeline assembly comprises a water inlet pipe (8), the water inlet (1) is arranged at one end of the water inlet pipe (8), the spring seat (3) is integrally formed on the inner wall of the water inlet pipe (8), the fixed seat (4) and the water inlet pipe (8) are arranged separately, and the water inlet (1) constitutes a mounting port for the movable part (5) and the fixed seat (4).

8. The novel flow switch type delivery valve according to claim 7 is characterized in that: The inner wall of the water inlet pipe (8) is provided with a third limiting step (801), a weld-free cover (9) is connected inside the water inlet pipe (8), and the fixing seat (4) is fixedly connected to the water inlet pipe (8) by being limited between the third limiting step (801) and the weld-free cover (9).

9. The novel flow switch type delivery valve according to claim 7 is characterized in that: A first check valve (10) is fixedly provided in the water inlet pipe (8), and the first check valve (10) is located between the fixing seat (4) and the water inlet (1); a filter screen (11) is fixedly provided in the water inlet pipe (8), and the filter screen (11) is located at the water inlet (1).

10. The novel flow switch type delivery valve according to any one of claims 1 to 9, characterized in that: The magnetic induction switch (6) is a reed switch.

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