Three-position five-way integrated valve

Abstract

According to the three-position five-way integrated valve, the right side of a frame shell is connected with a pilot seat assembly, the right side of the pilot seat assembly is connected with a valve body, and the right side of the valve body is connected with a rear cover; a port A, a port B and a port C are formed in the lower side of the front end of the valve body from left to right, a valve element is arranged in the center of the valve body, and a spring limiting block is arranged on the right side of the valve element. The left side and the right side of the upper end of the port B are provided with a port S and a port P respectively, a communication port is formed between the port S and the port P, the upper end of the communication port is communicated with a one-way channel, the rear end of the one-way channel is communicated with a flow guide channel, and the left side of the flow guide channel is communicated with a rear end pilot seat assembly. The opening S and the opening P are formed in the upper end of the front end valve body, the communicating opening is communicated with the pilot seat assembly at the rear end to achieve three-position five-way, the structure is small and exquisite, connection is tight, installation is easy, and the sealing effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of integrated valves, in particular to a three-position five-way integrated valve. Background Art

[0002] As the name implies, a three-position five-way valve has three working positions and five ports. Three positions mean that the spool of the solenoid valve has three positions. All three-position solenoid valves have two coils, which we will temporarily call coil A and coil B. When neither A nor B is energized, the spool is in one position. When A is energized, the spool moves, which is the second position. When A is de-energized and B is energized, the position of the spool is the third position. So there are a total of three positions. There are three types of three-position five-way solenoid valves, which are divided into middle seal, middle open and middle closed according to the different states of the spool when neither A nor B is energized. Five ports mean five ports, one air inlet, two cylinder ports, and two exhaust ports.

[0003] Patent No. CN202122451491.X discloses a solenoid valve integration device, which consists of several solenoid valves and a valve body. The solenoid valves are installed on the upper end face of the valve body and are linearly distributed. The outer shell of the solenoid valve is provided with a mounting plate, and the mounting plate of the solenoid valve is fixed on the valve body through gaskets and bolts. The gasket is an octagonal gasket. By changing the distribution method of the solenoid valves on the traditional solenoid valve integration device and using octagonal gaskets and bolts for fixation, the fastening performance is ensured, the volume of the valve body is reduced, the layout of the solenoid valve integration device on the vehicle is facilitated, and the number of repairs is reduced at the same time. However, this integration device has the following problems: First, this integration device is assembled by multiple solenoid valves on a mounting plate, which is just a simple assembly. Secondly, it cannot achieve three-position five-way, the sealing performance at the connection position is poor, and the linkage effect is poor. Summary of the Utility Model

[0004] The purpose of the utility model is to address the deficiencies of the prior art. By arranging coil assemblies, a pilot seat assembly and a valve body in sequence, and setting port A, port B and port C at the center position under the front valve body, and setting port S and port P at the upper end of the front valve body, and using a communication port to connect the rear pilot seat assembly, it is convenient to solve the technical problems of simple assembly, poor linkage and poor sealing effect of the integrated valve in the prior art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A three-position five-way integrated valve includes a coil assembly. A group of coil nuts placed in parallel are provided on the left side of the lower end of the coil assembly. The right sides of the coil nuts are all connected to pilot pipes. The outer sides of the pilot pipes are all wrapped and connected with a frame shell. The right sides of the frame shells are all connected to a pilot seat assembly. The right sides of the pilot seat assemblies are all connected to a valve body. The right side of the valve body is connected to a rear cover;

[0007] A valve body, wherein the lower side of the front end of the valve body is respectively provided with port A, port B and port C from left to right, and a valve core is provided at the center of the valve body, a spring stopper is provided on the right side of the valve core, a spring is provided on the right side of the spring stopper, and a rear cover is provided on the right side of the spring;

[0008] B port, S port and P port are respectively arranged on the left and right sides of the upper end of the B port, a connecting port is arranged between the S port and the P port, the upper end of the connecting port is connected to a one-way channel, a sealing steel ball is arranged at the front end of the one-way channel, and the rear end of the one-way channel is connected to a guide channel, and the left side of the guide channel is connected to the rear end of the pilot seat assembly.

[0009] Preferably, the pilot seat assembly includes a pilot seat housing, a moving iron core assembly is provided inside the left side of the pilot seat housing, a pilot piston is provided on the right side of the moving iron core assembly, a valve core is provided on the right side of the pilot piston, and a pilot button is provided at the center position of the upper end of the pilot seat housing.

[0010] Preferably, a sealing ring is provided at the inner center position of the rear side of the rear cover, a front passage is provided on the right side of the sealing ring, a front end of the front passage is connected to the first cavity, a circular transmission block is sealed in the first cavity, and a spring is connected to the left side of the circular transmission block.

[0011] As a preference, a passage is provided on the left side of the sealing ring, and the leftmost side of the passage is connected to the pilot seat assembly at the rear end.

[0012] As a preferred embodiment, flat sealing rings are evenly arranged on the surface of the valve core, and the flat sealing rings are evenly arranged on the left and right sides of the A port, the B port and the C port, and the pilot piston is connected to the left side of the valve core, and the spring limit block is connected to the right side of the valve core.

[0013] As another preferred embodiment, the right side of the pilot seat housing is fixedly connected to the valve body, the right side of the valve body is fixedly connected to the pilot seat B block, a spring is provided inside the pilot seat B block, and the right side of the pilot seat B block is connected to the back cover, and connecting holes are provided at the four vertex positions on the right side of the back cover, and fixing nuts are connected in the connecting holes, and the fixing nuts penetrate the pilot seat B block and are fixedly connected to the valve body, and sealing rubber rings are provided at the connecting positions of the pilot seat housing, the valve body, the pilot seat B block and the internal channels of the back cover.

[0014] Beneficial effects of the utility model:

[0015] (1) In this utility model, by setting up a pilot seat assembly, when the pilot seat assembly is powered on, the moving iron core assembly inside moves to the left. The air path enters the pilot seat housing from port B, the pilot button is opened, so that the air path acts on the pilot piston, and the pilot piston moves to the right to drive the valve core to move to the right. As a result, the passage between port B and port P is opened, and the air path exits from port B to the P end. When powered off, the air path is closed, the spring resets the valve core, and the flat sealing ring seals the air path. The structural principle is simple and the structure is small and compact, which is convenient for three-position five-way exhaust.

[0016] (2) In this utility model, by setting up a rear pilot seat assembly, when the rear pilot seat assembly is powered on, the air path enters the communication port from port B, enters the one-way channel through the communication port, and then enters the diversion channel, and thus enters the rear pilot seat housing. It enters the front communication channel in the rear cover through the passage, and then enters the first cavity, acting on the circular transmission block, so that the valve core moves to the left. At this time, the air path enters from port B and exits from port S. When powered off, the air path channel is closed, the pilot piston resets, making the overall valve core reset. Then ports A and C are the air outlets, realizing three-position five-way. The structure is small and the sealing effect is good.

[0017] (3) In this utility model, by setting up a flat sealing ring and a sealing steel ball, the entire air path channel is effectively sealed, and the overall sealing effect is good, and the structure is compact and small.

[0018] In summary, the device has the advantages of good sealing effect, compact and small structure, strong linkage, and three-position five-way, and is especially suitable for the field of integrated valve technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of this utility model, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following described drawings are only some embodiments of this utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 It is a schematic diagram of the structure of the valve core in this utility model.

[0022] Figure 3 It is a schematic diagram of the structures of ports A, B, and C in this utility model.

[0023] Figure 4 It is a schematic diagram of the structures of the one-way channel and the diversion channel in this utility model.

[0024] Figure 5 It is a schematic diagram of the structure of the sealing steel ball in this utility model.

[0025] Figure 6 This is a schematic structural diagram of the first cavity in the present utility model. Detailed implementation manners

[0026] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

[0027] Embodiment 1

[0028] As Figures 1 to 6 shown, the present utility model provides a three-position five-way integrated valve, including a coil assembly 1. A group of coil nuts 2 placed in parallel are provided on the left side of the lower end of the coil assembly 1. Pilot tubes 21 are connected to the right sides of the coil nuts 2. Connecting frame shells 22 are wrapped around the outer sides of the pilot tubes 21. Pilot seat assemblies 3 are connected to the right sides of the connecting frame shells 22. Valve bodies 4 are connected to the right sides of the pilot seat assemblies 3. Rear covers 5 are connected to the right sides of the valve bodies 4;

[0029] For the valve body 4, an A port 41, a B port 42, and a C port 43 are respectively provided on the lower side of the front end of the valve body 4 from left to right. A spool 6 is provided at the central position of the valve body 4. A spring limit block 61 is provided on the right side of the spool 6. A spring 62 is provided on the right side of the spring limit block 61. The spring 62 is provided on the right side of the rear cover 5;

[0030] For the B port 42, an S port 44 and a P port 45 are respectively provided on the left and right sides of the upper end of the B port 42. A communication port 46 is provided between the S port 44 and the P port 45. A one-way channel 47 is communicated with the upper end of the communication port 46. A sealing steel ball 8 is provided at the front end of the one-way channel 47. The rear end of the one-way channel 47 is communicated with a diversion channel 48. The left side of the diversion channel 48 is communicated with the rear-end pilot seat assembly 3.

[0031] Furthermore, the pilot seat assembly 3 includes a pilot seat housing 31. A moving iron core assembly 32 is provided inside the left side of the pilot seat housing 31. A pilot piston 33 is provided on the right side of the moving iron core assembly 32. The spool 6 is provided on the right side of the pilot piston 33. A pilot button 34 is provided at the central position of the upper end of the pilot seat housing 31. When the moving iron core assembly 32 is energized and moves to the left, the gas path can enter between the moving iron core assembly 32 and the pilot piston 33, thereby realizing the connection of the gas path. The structure is small and delicate, the connection is stable, and the sealing effect is good.

[0032] Further, a sealing ring 51 is provided at the center position inside the rear side of the rear cover 5. A front communication channel 52 is provided on the right side of the sealing ring 51. The front end of the front communication channel 52 communicates with the first cavity 53. A circular transmission block 54 is hermetically connected inside the first cavity 53. A spring 62 is connected to the left side of the circular transmission block 54. The front communication channel 52 is opened inside the rear cover 5, enabling the air paths of the valve bodies 4 placed front and back to communicate, thereby achieving three-position five-way. A sealing ring 51 is provided at the connection position between the passage 55 and the front communication channel 52, with good overall sealing effect, preventing gas leakage, reasonable arrangement of the gas flow channels, and simple processing procedures.

[0033] Further, a passage 55 is provided on the left side of the sealing ring 51. The leftmost part of the passage 55 communicates with the pilot seat assembly 3 at the rear end. By providing a passage 55 inside the valve body 4 at the rear end, the processing efficiency is high and the finished product rate is high.

[0034] Further, flat sealing rings 63 are evenly provided on the surface of the valve core 6. The flat sealing rings 63 are evenly arranged on the left and right sides of the A port 41, B port 42, and C port 43. The left side of the valve core 6 is connected to the pilot piston 33, and the right side of the valve core 6 is connected to the spring limit block 61. The valve core 6 is used to control the opening and closing of the air path, and the flat sealing rings 63 are used to control the air path flow.

[0035] Furthermore, the right side of the pilot seat housing 31 is fixedly connected to the valve body 4. The right side of the valve body 4 is fixedly connected to the pilot seat B block 7. A spring 62 is provided inside the pilot seat B block 7. The right side of the pilot seat B block 7 is connected to the rear cover 5. Connection holes 56 are provided at the four vertex positions on the right side of the rear cover 5. Fixing nuts are connected inside the connection holes 56. The fixing nuts penetrate through the pilot seat B block 7 and are fixedly connected to the valve body 4. Sealing rubber rings are provided at the positions where the internal channels of the pilot seat housing 31, valve body 4, pilot seat B block 7, and rear cover 5 communicate. The rear cover 5 connects the valve bodies 4 distributed front and back to form an integral whole. Sealing rubber rings are provided at the positions where the internal channels of the pilot seat housing 31, valve body 4, pilot seat B block 7, and rear cover 5 communicate. In this way, the sealing effect at the connection transition position is also good, the overall structure is small and compact, the sealing effect is good, the integration effect is good, and the development and installation costs are low.

[0036] Working process: First, the pilot seat assembly 3 at the front end is energized, and the internal moving iron core assembly 32 moves leftward. The air path enters the pilot seat housing 31 from port B42, opens the pilot button 34, so that the air path acts on the pilot piston 33. The pilot piston 33 moves rightward to drive the valve core 6 to move rightward, thereby opening the passage between port B42 and port P45. The air path discharges air from port B42 to port P45. When powered off, the air path is closed, and the spring 62 causes the valve core 6 to reset. The flat sealing ring 63 seals the air path. Similarly, when the pilot seat assembly 3 at the rear end is energized, the air path enters the communication port 46 from port B42, enters the one-way channel 47 through the communication port 46, then enters the diversion channel 48, and thus enters the rear pilot seat housing 31. It enters the front communication channel 52 in the rear cover 5 through the passage 55, then enters the first cavity 53, acts on the circular transmission block 54, and causes the valve core 6 to move leftward. At this time, the air path intakes air from port B42 and discharges air from port S44. When powered off, the air path channel is closed, the pilot piston 33 resets, causing the overall valve core 6 to reset. Then ports A41 and C43 are the air outlet ports, realizing three-position five-way. It has a small structure and good sealing effect.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "front and back", "left and right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0038] Certainly, in this technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of one component can be one, while in other embodiments, the number of this component can be multiple. The term "one" should not be construed as a limitation to the quantity.

[0039] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be easily thought of by those skilled in the art under the technical hint of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A three-position five-way integrated valve, characterized in that: include A coil assembly (1), wherein a group of coil nuts (2) are arranged in parallel on the left side of the lower end of the coil assembly (1), the right side of the coil nuts (2) are connected to a pilot tube (21), the outer side of the pilot tube (21) is wrapped and connected to a frame shell (22), the right side of the frame shell (22) is connected to a pilot seat assembly (3), the right side of the pilot seat assembly (3) is connected to a valve body (4), and the right side of the valve body (4) is connected to a rear cover (5); A valve body (4), wherein the lower side of the front end of the valve body (4) is respectively provided with an A port (41), a B port (42) and a C port (43) from left to right, and a valve core (6) is provided at the center of the valve body (4), a spring stopper (61) is provided on the right side of the valve core (6), a spring (62) is provided on the right side of the spring stopper (61), and a rear cover (5) is provided on the right side of the spring (62); A B port (42), an S port (44) and a P port (45) are respectively arranged on the left and right sides of the upper end of the B port (42), a connecting port (46) is arranged between the S port (44) and the P port (45), the upper end of the connecting port (46) is connected to a one-way channel (47), a sealing steel ball (8) is arranged at the front end of the one-way channel (47), and the rear end of the one-way channel (47) is connected to a guide channel (48), and the left side of the guide channel (48) is connected to the rear end of the pilot seat assembly (3).

2. A three-position five-way integrated valve according to claim 1, characterized in that: The pilot seat assembly (3) comprises a pilot seat housing (31), a moving iron core assembly (32) is arranged inside the left side of the pilot seat housing (31), a pilot piston (33) is arranged on the right side of the moving iron core assembly (32), a valve core (6) is arranged on the right side of the pilot piston (33), and a pilot button (34) is arranged at the center position of the upper end of the pilot seat housing (31).

3. A three-position five-way integrated valve according to claim 1, characterized in that: A sealing ring (51) is provided at the center position of the rear inner side of the rear cover (5), a front passage (52) is provided on the right side of the sealing ring (51), the front end of the front passage (52) is connected to a first cavity (53), a circular transmission block (54) is sealed in the first cavity (53), and a spring (62) is connected to the left side of the circular transmission block (54).

4. A three-position five-way integrated valve according to claim 3, characterized in that: A passage (55) is provided on the left side of the sealing ring (51), and the leftmost side of the passage (55) is connected to the pilot seat assembly (3) at the rear end.

5. The three-position five-way integrated valve according to claim 1, characterized in that: The surface of the valve core (6) is evenly provided with flat sealing rings (63), and the flat sealing rings (63) are evenly arranged on the left and right sides of the A port (41), the B port (42) and the C port (43). The left side of the valve core (6) is connected to the pilot piston (33), and the right side of the valve core (6) is connected to the spring limit block (61).

6. A three-position five-way integrated valve according to claim 2, characterized in that: The right side of the pilot seat housing (31) is fixedly connected to the valve body (4), and the right side of the valve body (4) is fixedly connected to the pilot seat B block (7). A spring (62) is provided inside the pilot seat B block (7), and the right side of the pilot seat B block (7) is connected to the rear cover (5). Four vertices on the right side of the rear cover (5) are provided with connection holes (56), and the connection holes (56) are connected with fixing nuts. The fixing nuts penetrate the pilot seat B block (7) and are fixedly connected to the valve body (4). The pilot seat housing (31), the valve body (4), the pilot seat B block (7) and the rear cover (5) are all provided with sealing rubber rings at the communication positions of the internal channels.

Images