Two-position three-way automatic backflow multifunctional electromagnetic valve

Abstract

The utility model discloses a two-position three-way automatic backflow multifunctional electromagnetic valve which comprises a valve body, a first side plate is installed on the outer wall of one side of the valve body, a liquid outlet is formed in the outer wall of the side, away from the valve body, of the first side plate, and a second side plate is installed on the outer wall of the side, away from the first side plate, of the valve body. A liquid inlet is formed in the outer wall of the side, away from the valve body, of the second side plate, a liquid outlet is formed in the bottom end of the valve body, a valve element is rotationally installed in the valve body, a main flow channel is formed in the center of the interior of the valve element, the two ends of the main flow channel extend out of the valve element, and an auxiliary flow channel is formed in the position, below the main flow channel, in the valve element. The two ends of the auxiliary flow channel extend out of the valve element, a shaft seat is arranged in the center of the top end of the valve body, and a valve rod is movably connected into the shaft seat. According to the electromagnetic valve, the phenomenon that liquid is left in the liquid inlet and flows back to the liquid supply pipeline is reduced, the purpose of controlling the electromagnetic valve to be opened and closed in a high-precision mode is achieved, and the purpose that the electromagnetic valve is easy to disassemble and maintain is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of solenoid valves, in particular to a two-position three-way automatic return multi-functional solenoid valve. Background Technique

[0002] Traditional two-position three-way solenoid valves usually only have the basic function of fluid on-off, and it is difficult to meet the requirements of precise fluid control under complex working conditions. With the continuous development of industrial automation technology, higher requirements are put forward for the functionality and reliability of solenoid valves. Therefore, it is particularly important to develop a solenoid valve that can automatically return and has multiple functions.

[0003] A two-position three-way solenoid valve with the reference publication number of CN209876104U includes a three-nozzle single-head valve body. A water passing cavity is arranged in the three-nozzle single-head valve body. The top of the water passing cavity is communicated with two water outlet pipes, the bottom end of the water passing cavity is communicated with a cavity, and the cavity is communicated with a water inlet pipe; a sealing rubber head for plugging the bottom end of the water passing cavity is arranged in the cavity. The sealing rubber head is located at the top end of a movable iron core, and the bottom end of the movable iron core is connected with a static iron core through a compression spring; the movable iron core and the static iron core are located in a copper pipe. A coil skeleton is circumferentially arranged outside the copper pipe, a coil is wound on the coil skeleton, and the coil skeleton is fixed in a holder; the structure of this solenoid valve is simple, stable, and easy to manufacture, and it can better control the liquid flow. According to the above, although this solenoid valve can be well applied, it is usually not convenient to discharge the fluid after cutoff, so that the fluid is easily retained in the liquid inlet area and flows back into the liquid supply pipeline, which often troubles users. Content of the Utility Model

[0004] The purpose of the utility model is to provide a two-position three-way automatic return multi-functional solenoid valve to solve the problem that although the solenoid valve can be well applied in the above background technique, it is usually not convenient to discharge the fluid after cutoff, so that the fluid is easily retained in the liquid inlet area and flows back into the liquid supply pipeline.

[0005] To achieve the above object, the present utility model provides the following technical solution: A two-position three-way automatic reflux multi-functional solenoid valve, including a valve body. On the outer wall of one side of the valve body, a first side plate is installed. On the outer wall of the first side plate away from the valve body, a liquid outlet is provided. On the outer wall of the valve body away from the first side plate, a second side plate is installed. On the outer wall of the second side plate away from the valve body, a liquid inlet is provided. At the bottom end of the valve body, a liquid discharge port is provided. Inside the valve body, a valve core is rotatably installed. At the central position inside the valve core, a main flow channel is provided. Both ends of the main flow channel extend to the outside of the valve core. Inside the valve core below the main flow channel, an auxiliary flow channel is provided. Both ends of the auxiliary flow channel extend to the outside of the valve core. At the central position of the top end of the valve body, a shaft seat is provided. Inside the shaft seat, a valve rod is movably connected. The bottom end of the valve rod extends into the valve body and is connected to the top end of the valve core. The top end of the valve rod extends to the outside of the shaft seat.

[0006] Preferably, on one side of the top end of the valve body, a vertical plate is provided. Inside the inner wall of the upper end of the vertical plate, a reducer housing is provided. Through the setting of the vertical plate, it is convenient to place and process the reducer housing.

[0007] Preferably, at the corner positions of the outer wall of the first side plate, first positioning seats are provided. On the outer wall of the first positioning seats, first positioning pins are installed. One end of the first positioning pin penetrates through the first positioning seat and is threadedly connected to the outer wall of the valve body. Through the setting of the first positioning pin, it is convenient to install the first side plate on the outer wall of the valve body.

[0008] Preferably, at the corner positions of the outer wall of the second side plate, second positioning seats are provided. On the outer wall of the second positioning seats, second positioning pins are installed. One end of the second positioning pin penetrates through the second positioning seat and is threadedly connected to the outer wall of the valve body. Through the setting of the second positioning pin, it is convenient to install the second side plate on the outer wall of the valve body.

[0009] Preferably, on one side of the top of the reducer housing, a first driving gear is rotatably installed. At the central position of the top end of the first driving gear, an input shaft is provided. The top end of the input shaft extends to the outside of the reducer housing. Through the setting of the input shaft, it is convenient to drive the first driving gear to rotate.

[0010] Preferably, inside the reducer housing on one side of the first driving gear, a first driven gear is rotatably installed. The first driven gear meshes with the first driving gear. Through the mutual meshing of the first driven gear and the first driving gear, when the first driving gear rotates, it drives the first driven gear to rotate.

[0011] Preferably, a second driving gear is provided at the bottom end of the first driven gear through a guide shaft. A second driven gear is rotatably installed inside the reducer housing on one side of the second driving gear. The second driven gear meshes with the second driving gear. When the second driving gear rotates, the second driven gear is driven to rotate by the mutual meshing of the second driven gear and the second driving gear.

[0012] Preferably, an output shaft is provided at the center position of the bottom end of the second driven gear. The bottom end of the output shaft extends to the outside of the reducer housing and is connected to the top end of the valve stem. Through the arrangement of the output shaft, the valve stem can be driven to rotate.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: This two-position three-way automatic return multi-functional solenoid valve not only reduces the phenomenon that liquid remains in the liquid inlet and flows back into the liquid supply pipeline, but also achieves the purpose of accurately controlling the opening and closing of the solenoid valve, and moreover, achieves the purpose of being easy to disassemble and maintain the solenoid valve;

[0014] (1) By respectively arranging a main flow channel and an auxiliary flow channel inside the valve core, when the two ends of the main flow channel respectively face the liquid outlet and the liquid inlet, and liquid is injected from the liquid inlet through the liquid supply pipeline, the liquid will pass through the main flow channel and be discharged from the liquid outlet. When the two ends of the main flow channel are attached to the two inner side walls inside the valve body, the upper end of the auxiliary flow channel faces the liquid inlet, so that the liquid intercepted in the liquid inlet after the solenoid valve is closed passes through the auxiliary flow channel and is discharged from the drain port, thereby reducing the phenomenon that liquid remains in the liquid inlet and flows back into the liquid supply pipeline;

[0015] (2) By connecting the input shaft to an external rotary driving member, when the rotary driving member drives the input shaft to rotate, the input shaft will sequentially drive the valve stem to rotate slowly through the first driving gear, the first driven gear, the second driving gear, the second driven gear and the output shaft, so that the valve stem drives the valve core to slowly rotate inside the valve body, thereby achieving the purpose of accurately controlling the opening and closing of the solenoid valve;

[0016] (3) By screwing out one ends of the first positioning pin and the second positioning pin to the outside of the valve body respectively, the first side plate and the second side plate can be pulled to be detached from the outer walls on both sides of the valve body, thereby achieving the purpose of being easy to disassemble and maintain the solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 is a front sectional structural schematic diagram of the present utility model;

[0019] Figure 3 is the present utility model Figure 1 an enlarged structural schematic diagram at A in;

[0020] Figure 4 This is a schematic cross-sectional view of the speed reducer housing of the present utility model.

[0021] In the figure: 1. Valve body; 2. First side plate; 3. Second side plate; 4. First positioning seat; 5. First positioning pin; 6. Second positioning seat; 7. Second positioning pin; 8. Liquid outlet; 9. Liquid inlet; 10. Drainage port; 11. Vertical plate; 12. Shaft seat; 13. Speed reducer housing; 14. Valve rod; 15. Input shaft; 16. Valve core; 1601. Main flow channel; 1602. Auxiliary flow channel; 17. Output shaft; 18. First driving gear; 19. First driven gear; 20. Second driving gear; 21. Second driven gear. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-4 , an embodiment provided by the present utility model: A two-position three-way automatic return multi-functional solenoid valve, including a valve body 1, a vertical plate 11 is provided on one side of the top of the valve body 1, and a speed reducer housing 13 is provided on the inner wall of the upper end of the vertical plate 11;

[0024] During use, through the setting of the vertical plate 11, the speed reducer housing 13 can be placed and processed;

[0025] A first driving gear 18 is rotatably installed on one side of the top of the speed reducer housing 13, a central position at the top of the first driving gear 18 is provided with an input shaft 15, and the top of the input shaft 15 extends to the outside of the speed reducer housing 13;

[0026] During use, through the setting of the input shaft 15, the first driving gear 18 can be driven to rotate;

[0027] A first driven gear 19 is rotatably installed inside the speed reducer housing 13 on one side of the first driving gear 18, and the first driven gear 19 meshes with the first driving gear 18;

[0028] During use, through the mutual meshing of the first driven gear 19 and the first driving gear 18, when the first driving gear 18 rotates, the first driven gear 19 is driven to rotate;

[0029] The bottom end of the first driven gear 19 is provided with a second driving gear 20 through a guide shaft. Inside the reducer housing 13 on one side of the second driving gear 20, a second driven gear 21 is rotatably installed. The second driven gear 21 meshes with the second driving gear 20;

[0030] During use, through the meshing of the second driven gear 21 and the second driving gear 20, when the second driving gear 20 rotates, it drives the second driven gear 21 to rotate;

[0031] At the central position of the bottom end of the second driven gear 21, an output shaft 17 is provided. The bottom end of the output shaft 17 extends to the outside of the reducer housing 13 and is connected to the top end of the valve stem 14;

[0032] During use, through the setting of the output shaft 17, it is convenient to drive the valve stem 14 to rotate;

[0033] On the outer wall of one side of the valve body 1, a first side plate 2 is installed. At the corner positions of the outer wall of the first side plate 2, first positioning seats 4 are provided. On the outer wall of the first positioning seats 4, first positioning pins 5 are installed. One end of the first positioning pin 5 penetrates through the first positioning seat 4 and is threadedly connected to the outer wall of the valve body 1;

[0034] During use, through the setting of the first positioning pin 5, it is convenient to install the first side plate 2 on the outer wall of the valve body 1;

[0035] On the outer wall of the first side plate 2 away from the valve body 1, a liquid outlet 8 is provided. On the outer wall of the valve body 1 away from the first side plate 2, a second side plate 3 is installed. At the corner positions of the outer wall of the second side plate 3, second positioning seats 6 are provided. On the outer wall of the second positioning seats 6, second positioning pins 7 are installed. One end of the second positioning pin 7 penetrates through the second positioning seat 6 and is threadedly connected to the outer wall of the valve body 1;

[0036] During use, through the setting of the second positioning pin 7, it is convenient to install the second side plate 3 on the outer wall of the valve body 1;

[0037] On the outer wall of the second side plate 3 away from the valve body 1, a liquid inlet 9 is provided. At the bottom end of the valve body 1, a liquid discharge port 10 is provided. Inside the valve body 1, a valve core 16 is rotatably installed. At the central position inside the valve core 16, a main flow channel 1601 is provided. Both ends of the main flow channel 1601 extend to the outside of the valve core 16. Inside the valve core 16 below the main flow channel 1601, an auxiliary flow channel 1602 is provided. Both ends of the auxiliary flow channel 1602 extend to the outside of the valve core 16. At the central position of the top end of the valve body 1, a shaft seat 12 is provided. Inside the shaft seat 12, a valve stem 14 is movably connected. The bottom end of the valve stem 14 extends into the valve body 1 and is connected to the top end of the valve core 16. The top end of the valve stem 14 extends to the outside of the shaft seat 12.

[0038] When the embodiment of the present application is in use, first, an external rotary driving member is connected through the input shaft 15. When the rotary driving member drives the input shaft 15 to rotate, the input shaft 15 will drive the first driving gear 18 to rotate. Since the first driving gear 18 meshes with the first driven gear 19, and the diameter of the first driving gear 18 is smaller than that of the first driven gear 19, the first driving gear 18 drives the second driving gear 20 to rotate slowly through the first driven gear 19. Also, since the second driving gear 20 meshes with the second driven gear 21, and the diameter of the second driving gear 20 is smaller than that of the second driven gear 21, the second driving gear 20 drives the output shaft 17 to rotate further slowly through the second driven gear 21, so that the output shaft 17 drives the valve core 16 to slowly rotate inside the valve body 1 through the valve stem 14, to perform the opening and closing process of the solenoid valve with high precision. Then, a main flow channel 1601 and an auxiliary flow channel 1602 are respectively arranged inside the valve core 16. When both ends of the main flow channel 1601 face the liquid outlet 8 and the liquid inlet 9 respectively, and the liquid is injected from the liquid inlet 9 through the liquid supply pipe, the liquid will flow through the main flow channel 1601 and be discharged from the liquid outlet 8. When both ends of the main flow channel 1601 are attached to the two inner side walls inside the valve body 1, the upper end of the auxiliary flow channel 1602 faces the liquid inlet 9, so that the liquid intercepted at the liquid inlet 9 after the solenoid valve is closed flows through the auxiliary flow channel 1602 and is discharged from the liquid discharge port 10, which can reduce the phenomenon that the liquid remaining in the liquid inlet 9 flows back into the liquid supply pipe. Finally, by screwing out one ends of the first positioning pin 5 and the second positioning pin 7 to the outside of the valve body 1 respectively, the first side plate 2 and the second side plate 3 can be pulled to detach them from the outer walls on both sides of the valve body 1, so as to easily clean and maintain the inside of the valve body 1, thus completing the use of the solenoid valve.

Claims

1. A two-position three-way automatic reflux multifunctional solenoid valve, characterized in that: The valve body (1) comprises a valve body (1), a first side plate (2) being mounted on an outer wall of one side of the valve body (1), a liquid outlet (8) being arranged on an outer wall of the first side plate (2) on a side away from the valve body (1), a second side plate (3) being mounted on an outer wall of the valve body (1) on a side away from the first side plate (2), a liquid inlet (9) being arranged on an outer wall of the second side plate (3) on a side away from the valve body (1), a liquid discharge port (10) being arranged at the bottom end of the valve body (1), a valve core (16) being rotatably mounted inside the valve body (1), a main flow channel (1601) being arranged at a central position inside the valve core (16), and the valve core (16) being arranged at a central position inside the valve core (16). Both ends of the main flow channel (1601) extend to the outside of the valve core (16); an auxiliary flow channel (1602) is provided inside the valve core (16) below the main flow channel (1601); both ends of the auxiliary flow channel (1602) extend to the outside of the valve core (16); an axle seat (12) is provided at the center position of the top end of the valve body (1); a valve stem (14) is movably connected inside the axle seat (12); the bottom end of the valve stem (14) extends to the inside of the valve body (1) and is connected to the top end of the valve core (16); the top end of the valve stem (14) extends to the outside of the axle seat (12).

2. A two-position three-way automatic reflux multifunctional solenoid valve according to claim 1, characterized in that: A vertical plate (11) is provided on one side of the top end of the valve body (1), and a reducer housing (13) is provided on the inner wall of the upper end of the vertical plate (11).

3. The two-position three-way automatic reflux multifunctional solenoid valve according to claim 1, characterized in that: A first positioning seat (4) is provided at a corner position of the outer wall of the first side plate (2), a first positioning pin (5) is installed on the outer wall of the first positioning seat (4), and one end of the first positioning pin (5) passes through the first positioning seat (4) and is threadedly connected to the outer wall of the valve body (1).

4. The two-position three-way automatic reflux multifunctional solenoid valve according to claim 1, characterized in that: A second positioning seat (6) is provided at a corner position of the outer wall of the second side plate (3), a second positioning pin (7) is installed on the outer wall of the second positioning seat (6), and one end of the second positioning pin (7) passes through the second positioning seat (6) and is threadedly connected to the outer wall of the valve body (1).

5. The two-position three-way automatic reflux multifunctional solenoid valve according to claim 2, characterized in that: A first driving gear (18) is rotatably mounted on one side of the top of the reducer housing (13); an input shaft (15) is provided at the center of the top of the first driving gear (18); and the top of the input shaft (15) extends to the outside of the reducer housing (13).

6. A two-position three-way automatic reflux multifunctional solenoid valve according to claim 5, characterized in that: A first driven gear (19) is rotatably mounted inside the reducer housing (13) on one side of the first driving gear (18), and the first driven gear (19) and the first driving gear (18) are meshed with each other.

7. A two-position three-way automatic reflux multifunctional solenoid valve according to claim 6, characterized in that: A second driving gear (20) is provided at the bottom end of the first driven gear (19) via a guide shaft, and a second driven gear (21) is rotatably mounted inside the reducer housing (13) on one side of the second driving gear (20), and the second driven gear (21) and the second driving gear (20) are meshed with each other.

8. The two-position three-way automatic reflux multifunctional solenoid valve according to claim 7, characterized in that: An output shaft (17) is provided at the center position of the bottom end of the second driven gear (21), and the bottom end of the output shaft (17) extends to the outside of the reducer housing (13) and is connected to the top end of the valve stem (14).

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