Two-position three-way electromagnetic valve and sweeping robot

Abstract

The two-position three-way electromagnetic valve comprises a first cavity, a second cavity and a guide groove which are sequentially arranged, the first cavity is provided with a first water outlet and a water inlet, and the second cavity is provided with a second water outlet; the valve element is arranged in the guide groove in a sliding mode, the sealing cover is arranged at the end, close to the second cavity, of the valve element, the sealing cover is in a bowl shape, and the sealing cover can enable the guide groove and the outer circle face of the valve element to be isolated from the second cavity to form a physical isolation state; impurities or dirt of the fluid cannot make contact with the guide groove and the outer circle face of the valve element, the influence of the fluid is avoided, and movement clamping stagnation and unsmoothness are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, in particular to a two-position three-way electromagnetic valve and a sweeping robot. Background Art

[0002] The two-position three-way solenoid valve is provided with a water inlet and two water outlets. The flow path of the fluid is switched by the valve core. The valve core is assembled in the guide groove for telescopic movement. In order to prevent the fluid from entering the guide groove, a sealing ring is often provided. However, when the valve core performs telescopic movement, the end of the valve core will extend out of the guide groove, so that part of the outer cylindrical surface of the valve core will contact the fluid. Dirt and debris in the fluid will adhere to the outer cylindrical surface of the valve core and inevitably enter the guide groove with the telescopic movement of the valve core, thereby contaminating the guide groove and the valve core, and even causing the accumulation of dirt and debris, which will cause the valve core to become stuck and move poorly. In addition, after long-term use, the sealing ring will wear, making it more likely for dirt and debris to enter the guide groove and accumulate. Utility Model Content

[0003] The utility model aims to provide a two-position three-way solenoid valve, whose sealing cover can isolate the guide groove and the outer cylindrical surface of the valve core from the second cavity to form a physical isolation state. No matter in the first state or the second state, the debris or dirt of the fluid will not contact the guide groove and the outer cylindrical surface of the valve core, so that the guide groove and the outer cylindrical surface of the valve core are not affected by the fluid, thereby reducing movement stagnation and unsmoothness.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A two-position three-way solenoid valve comprises a first cavity, a second cavity and a guide groove which are arranged in sequence;

[0006] The first cavity is provided with a first water outlet and a water inlet;

[0007] The second cavity is provided with a second water outlet;

[0008] Also includes a valve core and a sealing cover;

[0009] The valve core is slidably arranged in the guide groove;

[0010] A sealing cover is provided at the end of the valve core close to the second cavity. The sealing cover is bowl-shaped and can isolate the guide groove and the outer circumferential surface of the valve core from the second cavity.

[0011] In some embodiments, the sealing cover includes a first connecting portion, a side wall, and a second connecting portion connected in sequence;

[0012] The end of the valve core close to the second cavity is provided with a first annular groove matched with the first connecting part;

[0013] The end surface of the guide groove close to the second cavity is provided with a second annular groove matched with the second connecting portion.

[0014] In some embodiments, an end surface of the second cavity wall of the second cavity is in conflict with the second connecting portion.

[0015] In some embodiments, the sealing cover is made of silicone.

[0016] In some embodiments, the first cavity is connected to the first water outlet through the first valve hole;

[0017] The second cavity is connected to the first cavity through the second valve hole; the first valve hole and the second valve hole are located on the same axis.

[0018] In some embodiments, the invention further comprises a transmission rod, one end of which is connected to the valve core, and the other end of which passes through the second valve hole;

[0019] The transmission rod and the second valve hole are clearance-matched;

[0020] The other end of the transmission rod is provided with a sealing plug.

[0021] In some embodiments, the first valve hole is provided with a first flange that cooperates with the sealing plug;

[0022] The second valve hole is provided with a second flange matched with the sealing plug.

[0023] In some embodiments, a coil and a reset member are further included, wherein the coil drives the valve core to retract, and the reset member drives the valve core to extend.

[0024] In some embodiments, it includes a first component, a second component, a driving component, an execution component, a base frame and a bracket attachment;

[0025] The first component is provided with a first cavity, a first water outlet and a water inlet;

[0026] The second component is provided with a second cavity and a second water outlet;

[0027] The drive assembly includes a coil;

[0028] The actuator assembly includes a valve core, a transmission rod and a sealing plug;

[0029] The base frame comprises a tubular body, the tubular body is provided with a guide groove, the end of the tubular body close to the second component is provided with a first plate body and a second plate body, and the end of the tubular body away from the second component is provided with a third plate body;

[0030] The coil is sleeved on the tubular body and is located between the second plate body and the third plate body;

[0031] The bracket accessory comprises a first bracket and a second bracket, wherein the first bracket is arranged between the first plate body and the second plate body, and the first bracket is provided with a notch matched with the tubular body;

[0032] The first bracket is provided with a boss, and the second bracket is provided with a groove matching with the boss;

[0033] The second bracket is also provided with a through hole matched with the tubular body.

[0034] A sweeping robot comprises a sewage system, wherein the sewage system comprises the above-mentioned two-position three-way solenoid valve.

[0035] The beneficial effects of the utility model are as follows: the sealing cover can be deformed with the movement of the valve core, so that the guide groove and the outer cylindrical surface of the valve core are always isolated from the second cavity, forming a physical isolation state. No matter in the first state or the second state, the debris or dirt of the fluid will not contact the guide groove and the outer cylindrical surface of the valve core, so that the guide groove and the outer cylindrical surface of the valve core are not affected by the fluid, reducing movement jamming and unsmoothness. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is an axonometric diagram of a two-position three-way solenoid valve of the utility model;

[0037] Figure 2 This is an exploded view of a two-position three-way solenoid valve of the utility model;

[0038] Figure 3 It is a cross-sectional view of a two-position three-way solenoid valve of the utility model, in a first state;

[0039] Figure 4 It is a cross-sectional view of a two-position three-way solenoid valve of the utility model, which is in a second state;

[0040] Figure 5 This is a sectional exploded view of a two-position three-way solenoid valve of the utility model;

[0041] Figure 6 for Figure 5 A local enlarged view of point A;

[0042] Figure 7 This is a structural diagram of the sealing cover of the utility model;

[0043] Figure 8 This is a structural diagram of the sealing cover of the utility model when it is in the first state;

[0044] Fig. 9 This is a structural diagram of the sealing cover of the utility model when it is in the second state;

[0045] Among them: 1-first component; 2-second component; 3-driving component; 4-executing component; 10-first cavity; 11-first valve hole; 111-first flange; 12-first water outlet; 13-water inlet; 14-first cavity wall; 15-sealing ring; 20-second cavity; 21-second valve hole; 211-second flange; 22-second water outlet; 23-second cavity wall; 31-coil; 32-reset member; 40-valve core; 401-first ring groove; 402-outer cylindrical surface; 41-transmission rod; 42-sealing plug; 5-sealing cover; 51-first connecting part; 52-side wall; 53-second connecting part; 6-base frame; 61-tubular body; 611-guide groove; 62-first plate body; 621-second annular groove; 63-second plate body; 64-third plate body; 7-bracket attachment; 71-first bracket; 711-notch; 712-boss; 72-second bracket; 721-groove; 722-through hole. DETAILED DESCRIPTION

[0046] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0047] refer to Figures 1 to 4 A two-position three-way solenoid valve includes a first component 1, a second component 2, a driving component 3, an execution component 4, a sealing cover 5 and a base frame 6.

[0048] The first component 1 is provided with a first cavity 10 , a first water outlet 12 and a water inlet 13 .

[0049] The second component 2 is provided with a second cavity 20 and a second water outlet 22 .

[0050] The actuator assembly 4 includes a valve core 40 , a transmission rod 41 and a sealing plug 42 .

[0051] The driving assembly 3 includes a coil 31 for driving the valve core 40 to move; it also includes a reset member 32, which can be a spring, for driving the valve core 40 to reset or maintain the position of the valve core 40; the reset member 32 can be arranged in the guide groove 611, one end of the reset member 32 is connected to the valve core 40, and the other end of the reset member 32 is connected to the end face of the guide groove 611.

[0052] refer to Figure 3 The base frame 6 is provided with a guide groove 611, and the valve core 40 is slidably arranged in the guide groove 611; the coil 31 is fixed to the base frame 6;

[0053] The first cavity 10, the second cavity 20 and the guide groove 611 are arranged in sequence, and may be arranged in sequence along the same axis;

[0054] The first water outlet 12 is located on a side of the first cavity 10 away from the second cavity 20, and the second water outlet 22 is located on a side of the second cavity 20. The first water outlet 12 and the second water outlet 22 are arranged in parallel and extend to the same side; the guide groove 611 is located on a side of the second cavity 20 away from the first cavity 10.

[0055] Among them, reference Figure 3 and Figure 4 , the first cavity 10 is connected to the first water outlet 12 through the first valve hole 11;

[0056] The second cavity 20 is connected to the first cavity 10 through the second valve hole 21;

[0057] The first valve hole 11 and the second valve hole 21 are located on the same axis;

[0058] One end of the transmission rod 41 is connected to the valve core 40, and the other end of the transmission rod 41 passes through the second valve hole 21;

[0059] The transmission rod 41 and the second valve hole 21 are clearance-fitted;

[0060] The other end of the transmission rod 41 is provided with a sealing plug 42, which is located in the first cavity 10 and between the first valve hole 11 and the second valve hole 21;

[0061] The solenoid valve has the following two states:

[0062] refer to Figure 3 , first state: the coil 31 is not energized, the valve core 40 extends under the action of the reset member 32, and drives the sealing plug 42 to block the first valve hole 11 through the transmission rod 41 and maintain the position. At this time, the first water outlet 12 is closed, and the water inlet 13 is connected to the second water outlet 22.

[0063] refer to Figure 4 , second state: the coil 31 is energized to generate a magnetic field. Under the action of the magnetic force, the valve core 40 retracts, driving the sealing plug 42 away from the first valve hole 11 through the transmission rod 41, and blocks the second valve hole 21. At this time, the second water outlet 22 is closed, and the water inlet 13 is connected to the first water outlet 12. After power failure, the reset member 32 drives the valve core 40 to reset and switch to the first state.

[0064] Since the second water outlet 22 and the guide groove 611 are respectively located on different sides of the second cavity 20, the second water outlet 22 is directly connected to the second cavity 20. Therefore, when the solenoid valve is in the first state, fluids such as liquid or gas can flow directly out of the second water outlet 22 without passing through the guide groove 611, and debris or dirt in the fluid is not easy to contaminate and accumulate in the guide groove 611, thereby reducing or avoiding blockage and reducing or avoiding smooth movement of the valve core 40.

[0065] refer to Figure 5 The solenoid valve is also provided with a sealing cover 5. The end of the valve core 40 close to the second cavity 20 is provided with a sealing cover 5. The sealing cover 5 is bowl-shaped. The sealing cover 5 can isolate the guide groove 611 and the outer cylindrical surface 402 of the valve core 40 from the second cavity 20, forming a physical isolation state.

[0066] When the solenoid valve is in the first state, the end of the valve core 40 extends out of the guide groove 611 and extends into the second cavity 20. If the relevant sealing ring is usually used for sealing, it can only prevent the fluid from flowing into the guide groove 611, but the fluid will still contact with the protruding end of the valve core 40, and the fluid will contaminate the valve core 40. Dirt or debris in the fluid will adhere to the outer cylindrical surface 402 of the valve core 40, and during the retraction action, dirt or debris will easily be brought into the guide groove 611. The present application adopts a sealing cover 5. In the first state, the sealing cover 5 always separates the guide groove 611 and the outer cylindrical surface 402 of the end of the valve core 40 in the second cavity 20, and does not come into contact with the fluid.

[0067] Therefore, no matter in the first state or the second state, the debris or dirt of the fluid will not contact the guide groove 611 and the outer cylindrical surface 402 of the valve core 40, and the debris or dirt will not enter the guide groove 611 and will not accumulate, so that the guide groove 611 and the outer cylindrical surface 402 of the valve core 40 are not affected by the fluid, effectively reducing or avoiding the problem of movement jamming and unsmoothness caused by the accumulation of dirt or debris.

[0068] refer to Figure 6 and Figure 7 The sealing cover 5 includes a first connecting portion 51, a side wall 52 and a second connecting portion 53 which are connected in sequence;

[0069] The end of the valve core 40 close to the second cavity 20 is provided with a first annular groove 401 matched with the first connecting portion 51, that is, the first connecting portion 51 is assembled in the first annular groove 401. The provision of the first annular groove 401 facilitates assembly and improves the sealing of the connection.

[0070] The end surface of the guide groove 611 close to the second cavity 20 is provided with a second annular groove 621 that cooperates with the second connecting portion 53 , that is, the second connecting portion 53 is assembled in the second annular groove 621 . The provision of the second annular groove 621 facilitates assembly and improves the sealing of the connection.

[0071] refer to Figure 8 and Fig. 9 It can be seen that the sealing cover 5 can be deformed with the movement of the valve core 40, that is, in the first state, the sealing cover 5 is in a normal bowl shape, and in the second state, the sealing cover 5 shrinks and deforms with the retraction of the valve core 40. At this time, the side wall 52 is bent or folded.

[0072] refer to Figure 4 and Figure 5The end face of the second cavity wall 23 of the second cavity 20 conflicts with the second connecting portion 53, thereby limiting or fixing the second connecting portion 53 of the sealing cover 5. At the same time, the assembly between the second component 22 and the bracket accessory 7 is sealed. It can be seen that the sealing cover 5 not only isolates the guide groove 611 and the outer cylindrical surface 402 of the valve core 40, but also realizes a sealed connection between the second component 22 and the bracket accessory 7, and the structure is more compact and ingenious.

[0073] The sealing cover 5 is made of silicone, which has excellent properties such as elasticity, corrosion resistance, and water resistance.

[0074] refer to Figure 5 A sealing ring 15 is provided between the first cavity wall 14 of the first cavity 10 and the second component 22 to achieve a sealed assembly of the two.

[0075] refer to Figure 3 and Figure 4 The first valve hole 11 is provided with a first flange 111 matched with the sealing plug 42; the second valve hole 21 is provided with a second flange 211 matched with the sealing plug 42. Thus, the arrangement of the first flange 111 and the second flange 211 improves the contact effectiveness with the sealing plug 42 and improves the quality of the plugging.

[0076] refer to Figure 2 The base frame 6 includes a tubular body 61, the inner cavity of the tubular body 61 forms a guide groove 611, the end of the tubular body 61 close to the second component 22 is provided with a first plate 62 and a second plate 63, and the end of the tubular body 61 away from the second component 22 is provided with a third plate 64; wherein the tubular body 61, the first plate 62, the second plate 63 and the third plate 64 can be integrally formed; the second annular groove 621 can be provided on one side of the first plate 62 close to the second cavity 20;

[0077] The coil 31 is sleeved on the tubular body 61 and located between the second plate 63 and the third plate 64 .

[0078] refer to Figure 2 The solenoid valve further comprises a bracket accessory 7, which is used to assemble the solenoid valve into related electrical appliances. The bracket accessory 7 further comprises a first bracket 71 and a second bracket 72. The first bracket 71 is in a plate or sheet shape, and the first bracket 71 is in a bent shape. The first bracket 71 is disposed between the first plate body 62 and the second plate body 63, and the first bracket 71 is provided with a notch 711 that matches the tubular body 61. The first bracket 71 can be further fixed to the base frame 6 by screws.

[0079] The first bracket 71 is provided with a boss 712, and the second bracket 72 is provided with a groove 721 that matches the boss 712, so as to facilitate positioning and assembly;

[0080] The second bracket 72 is also provided with a through hole 722 that matches the tubular body 61. The second bracket 72 is also provided with a threaded hole or a mounting hole, so as to facilitate the assembly of the solenoid valve in the relevant electrical appliances.

[0081] A sweeping robot includes a sewage system, and the sewage system includes the above-mentioned two-position three-way solenoid valve. The sewage system includes a sewage tank, a water pump and related water pipes. When the solenoid valve is in the first state, the water pump sucks the sewage generated during cleaning into the sewage tank. When the water volume in the sewage tank reaches a preset value, that is, when the water is full, the solenoid valve switches to the second state, the water pump reverses, and the sewage in the sewage tank is discharged to the base station, etc. The sweeping robot uses the solenoid valve to avoid contamination or debris in the sewage, clogging the guide groove 611 and the valve core 40, and ensure the normal operation and smooth movement of the valve core 40, thereby increasing the service life.

[0082] The above disclosure is only some embodiments of the utility model. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the utility model, and these all belong to the protection scope of the utility model.

Claims

1. A two-position three-way solenoid valve, characterized in that: It comprises a first cavity (10), a second cavity (20) and a guide groove (611) which are arranged in sequence; The first cavity (10) is provided with a first water outlet (12) and a water inlet (13); The second cavity (20) is provided with a second water outlet (22); It also includes a valve core (40) and a sealing cover (5); The valve core (40) is slidably disposed in the guide groove (611); The sealing cover (5) is provided at the end of the valve core (40) close to the second cavity (20); the sealing cover (5) is bowl-shaped and can isolate the guide groove (611) and the outer circumferential surface (402) of the valve core (40) from the second cavity (20).

2. A two-position three-way solenoid valve according to claim 1, characterized in that: The sealing cover (5) comprises a first connecting portion (51), a side wall (52) and a second connecting portion (53) which are connected in sequence; The end of the valve core (40) close to the second cavity (20) is provided with a first annular groove (401) that cooperates with the first connecting portion (51); The end surface of the guide groove (611) close to the second cavity (20) is provided with a second annular groove (621) that cooperates with the second connecting portion (53).

3. A two-position three-way solenoid valve according to claim 2, characterized in that: An end surface of the second cavity wall (23) of the second cavity (20) abuts against the second connecting portion (53).

4. A two-position three-way solenoid valve according to claim 3, characterized in that: The sealing cover (5) is made of silica gel.

5. A two-position three-way solenoid valve according to claim 1, characterized in that: The first cavity (10) is in communication with the first water outlet (12) via the first valve hole (11); The second cavity (20) is connected to the first cavity (10) via a second valve hole (21); The first valve hole (11) and the second valve hole (21) are located on the same axis.

6. A two-position three-way solenoid valve according to claim 5, characterized in that: It also includes a transmission rod (41), one end of which is connected to the valve core (40), and the other end of which passes through the second valve hole (21); The transmission rod (41) and the second valve hole (21) are clearance-matched; The other end of the transmission rod (41) is provided with a sealing plug (42).

7. A two-position three-way solenoid valve according to claim 6, characterized in that: The first valve hole (11) is provided with a first flange (111) matched with the sealing plug (42); The second valve hole (21) is provided with a second flange (211) that matches the sealing plug (42).

8. A two-position three-way solenoid valve according to claim 1, characterized in that: It also includes a coil (31) and a reset member (32), wherein the coil (31) can drive the valve core (40) to perform a retracting movement, and the reset member (32) can drive the valve core (40) to perform an extending movement.

9. A two-position three-way solenoid valve according to claim 1, characterized in that: It comprises a first component (1), a second component (2), a driving component (3), an execution component (4), a base frame (6) and a bracket accessory (7); The first component (1) is provided with a first cavity (10), a first water outlet (12) and a water inlet (13); The second component (2) is provided with a second cavity (20) and a second water outlet (22); The driving component (3) comprises a coil (31); The actuator assembly (4) comprises a valve core (40), a transmission rod (41) and a sealing plug (42); The base frame (6) comprises a tubular body (61), the tubular body (61) is provided with the guide groove (611), the end of the tubular body (61) close to the second component (2) is provided with a first plate body (62) and a second plate body (63), and the end of the tubular body (61) away from the second component (2) is provided with a third plate body (64); The coil (31) is sleeved on the tubular body (61) and is located between the second plate body (63) and the third plate body (64); The bracket attachment (7) comprises a first bracket (71) and a second bracket (72), wherein the first bracket (71) is arranged between the first plate body (62) and the second plate body (63), and the first bracket (71) is provided with a notch (711) matching with the tubular body (61); The first bracket (71) is provided with a boss (712), and the second bracket (72) is provided with a groove (721) matched with the boss (712); The second bracket (72) is also provided with a through hole (722) that matches the tubular body (61).

10. A sweeping robot, characterized in that: It comprises a sewage system, and the sewage system comprises the two-position three-way solenoid valve according to claim 1.

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