Electromagnetic reversing valve and valve body thereof

Abstract

The utility model provides an electromagnetic directional valve and a valve body thereof, and belongs to the field of fluid control valves, the electromagnetic directional valve specifically comprises the valve body, a valve core and an electromagnet, a sixth oil duct communicating a first oil duct and a fifth oil duct in the valve body is arranged between a through hole of the valve core and the bottom surface of the valve body, and the sixth oil duct is further arranged over an oil port T; the upper space wall of the valve core through hole of the valve body is subjected to material reduction treatment; according to the utility model, the structural principle is simple, the length of the flow channel can be effectively shortened, the turning of the flow channel is reduced, the fluid pressure loss is reduced, the raw material consumption of valve body casting is reduced, the weight of the whole valve is reduced, and the weight of the whole engineering machinery and the energy consumption are reduced.

Description

Technical Field

[0001] This application relates to the field of fluid control valves, specifically to an electromagnetic directional valve. Background Technology

[0002] Construction and agricultural machinery often operates in rainy or high-humidity environments, making them prone to corrosion and electrical short circuits. Therefore, targeted protective measures are needed for the operating environments of construction and agricultural machinery, further improving the waterproof and rust-proof sealing requirements of hydraulic valves. Currently, the optimization of construction machinery should also be based on the concept of energy conservation and emission reduction, minimizing pollutant generation during the production and use of machinery.

[0003] Directional control valves are common fluid control valves, typically used to control the direction of fluid flow. Generally, a directional control valve body has a valve core through-hole and multiple flow channels, with the valve core usually moved by an electromagnet and a spring at both ends. By selectively opening or closing the connection between the flow channels through different structures and displacements of the valve core, the working fluid flows in a controlled manner within the flow channels. During operation, the fluid is affected by the frictional force of the flow channel walls. As it flows through the flow channels, the fluid pressure will continuously decrease, forming a pressure loss. Excessive pressure loss will increase the energy loss of the hydraulic system, resulting in energy waste. Utility Model Content

[0004] Therefore, in order to overcome the shortcomings of the prior art, this utility model provides an electromagnetic directional valve and its valve body to solve the problems of easy rusting of electromagnetic valves, energy loss in hydraulic systems, and high material consumption of electromagnetic directional valves during use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a solenoid directional valve body, characterized in that it comprises:

[0006] The bottom surface of the valve body is provided with oil ports A, B, P, and T;

[0007] The valve body is provided with a valve core through hole parallel to the bottom surface of the valve body. The valve body is provided with a first oil passage, a second oil passage, a third oil passage, a fourth oil passage and a fifth oil passage in sequence along the axial direction of the valve core through hole. The second oil passage is connected to the A oil port, the third oil passage is connected to the P oil port, and the fourth oil passage is connected to the B oil port.

[0008] The valve body is also provided with a sixth oil passage, which is connected to the T-port and also connects the first oil passage and the fifth oil passage. The sixth oil passage is located between the valve core through hole and the bottom surface of the valve body.

[0009] Specifically, the T-port and P-port are respectively located on both sides of the projection of the valve core through hole onto the bottom surface of the valve body, and the sixth oil passage is located directly above the T-port.

[0010] Specifically, the ratio of the height of the upper oil passage wall of the sixth oil passage to the distance from the bottom surface of the valve body to the center of the valve core through hole is 0.52:1 to 0.54:1; the ratio of the height of the lower oil passage wall of the sixth oil passage to the distance from the bottom surface of the valve body to the center of the valve core through hole is 0.15:1 to 0.25:1.

[0011] Specifically, the valve body above the valve core through hole is reduced in material, and the ratio of the height of the reduced material to the height of the valve body is 0.15:1 to 0.18:1. The valve body at the reduced material portion accounts for 14% to 18% of the valve body.

[0012] Specifically, the recessed subtractive portion is provided with rivet holes for riveting information signs.

[0013] Specifically, the side walls of the first and fifth oil passages slope towards the sides near both ends of the valve body, forming a gentle transition surface.

[0014] Specifically, the inclination angle of the smooth transition surface is 7° to 9°.

[0015] An electromagnetic directional valve, comprising:

[0016] Valve body, wherein the valve body is the valve body described above;

[0017] A valve core is installed in the through hole of the valve core and moves relative to the valve body to realize the closure or connection of different oil passages in the valve body;

[0018] An electromagnet is placed at at least one end of the valve body to drive the valve core to move.

[0019] Specifically, the valve core is provided with at least two protrusions along its axis, and a semi-circular groove is provided at the protrusion switching point that contacts the oil passage of the valve body, and a uniform groove is provided on the surface of the protrusion.

[0020] Specifically, the electromagnet includes an electromagnet assembly and a coil assembly. The electromagnet assembly is installed on at least one side of the valve body, and the coil assembly is installed on the electromagnet assembly by a plastic nut. The end of the plastic nut is provided with an annular groove for mounting a protective cap.

[0021] Compared with the prior art, the advantages of this application are as follows: The oil passage position in the solenoid valve is designed in this application, and the sixth oil passage, which connects the first oil passage and the fifth oil passage, is set below the valve core through hole, which shortens the length of the flow channel connecting the sixth oil passage and the T oil port, reduces the fluid pressure loss, and the redesign of the oil passage position in the solenoid valve also makes the flow channel position layout in the solenoid valve more compact. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the electromagnetic reversing valve structure described in the embodiments of this application;

[0024] Figure 2 This is a side view of the electromagnetic directional valve body described in the embodiments of this application;

[0025] Figure 3 This is a schematic diagram of the bottom surface of the electromagnetic directional valve body described in the embodiments of this application;

[0026] Figure 4 This is a design drawing of the oil passage inside the electromagnetic directional valve body as described in the embodiments of this application;

[0027] Figure 5 This is a cross-sectional view (AA) of the valve body of the electromagnetic directional valve described in the embodiments of this application;

[0028] Figure 6 This is a BB cross-sectional view of the valve body of the electromagnetic directional valve described in the embodiments of this application;

[0029] Figure 7 This is a top view of the electromagnetic directional valve body described in the embodiments of this application;

[0030] Figure 8 This is a schematic diagram of the electromagnetic directional valve core described in the embodiments of this application. Detailed Implementation

[0031] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0032] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0034] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0035] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0036] This application provides an embodiment of an electromagnetic reversing valve, such as... Figure 1 As shown, it includes: valve body 1, valve core 2 and electromagnet 3;

[0037] In one embodiment, the oil port location conforms to ISO 4401-03-02-0-05 standard; such as Figure 3As shown, the bottom surface of the valve body is provided with oil port A 101, oil port B 102, oil port P 103 and an oil port T 104; oil port A 101 and oil port B 102 are located directly below the valve core through hole 11, and oil port P 103 and oil port T 104 are respectively located on both sides of the projection of the valve core through hole 11 on the bottom surface 10 of the valve body. The projection of the valve core through hole 11 on the bottom surface 10 of the valve body is consistent with the straight line formed by connecting oil port A 101 and oil port B 102. The positions of oil port A 101, oil port B 102, oil port P 103 and oil port T 104 form a rhombus shape.

[0038] like Figure 4 As shown, the valve body 1 is provided with a valve core through hole 11 parallel to the bottom surface 10 of the valve body. The valve body 1 is provided with a first oil passage 111, a second oil passage 112, a third oil passage 113, a fourth oil passage 114 and a fifth oil passage 115 connected to the inside of the valve core through hole 11 in sequence along the axial direction of the valve core through hole 11. The valve body is also provided with a sixth oil passage 116, which connects the first oil passage 111 and the fifth oil passage 115. The sixth oil passage 116 is located between the valve core through hole 11 and the bottom surface 10 of the valve body.

[0039] In one embodiment, the sixth oil passage 116 is provided with three ports, such as... Figure 5 As shown, ports 1163 and 1164 are respectively provided on both sides of the sixth oil passage 116. Ports 1163 and 1164 are connected to the first oil passage 111 and the fifth oil passage 115 respectively. There is also a port 1165 located at the center of the side of the sixth oil passage 116 facing the bottom of the valve body, which is used to connect with the T-port 104 conforming to the ISO 4401-03-02-0-05 standard. The port 1165 located at the center of the side of the sixth oil passage 116 facing the bottom of the valve body is located directly above the T-port 104.

[0040] like Figure 5 , Figure 6 As shown, oil port A 101 is located directly below the valve core through hole 11, and is also directly below the second oil passage 112, which is connected to oil port A 101. Oil port B 102 is located directly below the valve core through hole 11, and is also directly below the fourth oil passage 114, which is connected to oil port B 102. The third oil passage 113 is inclined towards one side of the valve body 1 and is connected to oil port P 103. The first oil passage 111 and the fifth oil passage 115 are inclined towards the other side of the valve body 1. The sixth oil passage 116, connecting the first oil passage 111 and the fifth oil passage 115, is located between the other side of the valve body 1 and the vertical plane where the valve core through hole 11 is located, and is parallel to the valve core through hole 11. The sixth oil passage 116 is located directly above oil port T 104 and is connected to oil port T 104.

[0041] The valve body 1 above the valve core through hole 11 is subjected to a material reduction process, such as... Figure 7 As shown, the ratio of the height of the subtractive portion 14 to the height of the valve body 1 is 0.15:1 to 0.18:1, and the valve body of the subtractive portion 14 accounts for 14% to 18% of the entire valve body 1. At this time, the subtractive portion 11 is recessed, and the top surface of the subtractive portion 11 is also provided with rivet holes for riveting information labels, which indicate the specific information of the electromagnetic reversing valve.

[0042] The valve core 2 is installed in the valve core through hole 11 and moves relative to the valve body 1 to realize the closure or connection of different oil passages in the valve body 1.

[0043] like Figure 8 As shown, the valve core 2 has at least two protrusions 21 axially. A semi-circular groove 211 is provided at the switching point of the protrusion 21 that contacts the valve body oil passage. The semi-circular groove 211 prevents the valve core 2 from moving within the valve core through hole 11. This prevents the oil from experiencing a sudden connection between the third oil passage 113 and the second oil passage 112, or between the third oil passage 113 and the fourth oil passage 114, thus generating an impact force and allowing for a smoother transition of oil flow, reducing pressure loss and noise. Furthermore, the surface of the protrusion 21 has uniformly distributed grooves 212, improving the stress on the valve core 2, reducing the lateral force on the valve core 2, and preventing the valve core 2 from jamming.

[0044] An electromagnet 3 is provided at least one end of the valve body 1 of the electromagnetic directional valve. The electromagnet 3 is coaxial with the valve core 2. A return spring 4 is provided at least one end of the valve core 2. A gasket 5 is placed between the return spring 4 and the valve core 2. The electromagnet 3 and the return spring 4 are used to drive the valve core 2 to move. The electromagnet 3 includes an electromagnet tube assembly 31 and a coil assembly 32. The electromagnet tube assembly 31 is installed on at least one side of the valve body 1. The coil assembly 32 is installed on the electromagnet tube assembly 31 by a plastic nut 311. An annular groove 3111 is provided at the end of the plastic nut 311. A protective cap 312 is fitted on the annular groove 3111 to prevent moisture from entering the solenoid valve at the end of the electromagnet tube assembly 31. The electromagnet plug 33 is a waterproof plug.

[0045] Example 1

[0046] An electromagnetic directional valve, such as Figure 1 As shown, the electromagnetic directional valve includes a valve body 1, a valve core 2, and an electromagnet 3.

[0047] The specific structure of valve body 1 is as follows:

[0048] like Figure 2 As shown, a valve core through hole 11 parallel to the bottom surface 10 of the valve body is provided in the valve body.

[0049] like Figure 3As shown, the bottom surface 10 of the valve body is a standard mounting surface. The bottom surface 10 of the valve body is provided with oil port A 101, oil port B 102, oil port P 103, and oil port T 104, as follows: Figure 2 As shown, the position of its oil port conforms to ISO 4401-03-02-0-05 standard. Oil port A 101 and oil port B 102 are located directly below the valve core through hole 11. Oil port P 103 and oil port T 104 are respectively located on both sides of the projection of the valve core through hole 11 on the bottom surface 10 of the valve body. The projection of the valve core through hole 11 on the bottom surface 10 of the valve body is consistent with the straight line formed by connecting oil port A 101 and oil port B 102. The positions of oil port A 101, oil port B 102, oil port P 103 and oil port T 104 form a rhombus shape.

[0050] like Figure 4 As shown, the valve body is provided with a first oil passage 111, a second oil passage 112, a third oil passage 113, a fourth oil passage 114, and a fifth oil passage 115 sequentially arranged along the axial direction of the valve core through hole 11. A sixth oil passage 116 is also provided in the valve body, and the sixth oil passage 116 has three ports (e.g., ...). Figure 5As shown, ports 1163, 1164, and 1165 are respectively located on both sides of the sixth oil passage. Port 1163 and 1164 are located at the center of the sixth oil passage 116 facing the bottom surface 10 of the valve body. Port 1163 is connected to the first oil passage 111, port 1164 is connected to the fifth oil passage 115, and port 1165 is used to connect to the T-port 104. The sixth oil passage 116 connects the first oil passage 111 and the fifth oil passage 115, therefore the sixth oil passage 116 is also connected to the interior of the valve core through hole 11. The sixth oil passage 116 is located between the valve core through hole 11 and the bottom surface 10 of the valve body. The position of oil passage 116 is close to the T-port 104, and the direct connection between oil passage 116 and the T-port 104 reduces pressure loss. The ratio of the height of the upper oil passage wall 1161 of the sixth oil passage 116 to the distance from the bottom surface 10 of the valve body to the center of the valve core through hole 11 is 0.52:1; the ratio of the height of the lower oil passage wall 1162 of the sixth oil passage 116 to the distance from the bottom surface 10 of the valve body to the center of the valve core through hole 11 is 0.2:1; the oil passage wall on the side of the first oil passage 111 away from the center of the valve core through hole 11 slopes towards the side away from the center of the valve core through hole 11, forming a gentle transition surface 1110; the fifth oil passage... The oil passage wall on the side of oil passage 115 furthest from the center of the valve core through hole 11 slopes away from the center of the valve core through hole 11, forming a gentle transition surface 1150; the oil passage wall on the side of oil passage 112 closest to the center of the valve core through hole 11 slopes towards the center of the valve core through hole 11, forming a gentle transition surface 1120; the oil passage wall on the side of oil passage 114 closest to the center of the valve core through hole 11 slopes towards the center of the valve core through hole 11, forming a gentle transition surface 1140. The inclination angles of gentle transition surfaces 1110, 1150, 1120, and 1140 are all set to 8°. The arrangement of gentle transition surfaces 1110, 1150, 1120, and 1140 improves the hydraulic force in the oil passages, reduces the axial hydraulic pressure on the valve core 2 during operation, and further reduces the required thrust of the electromagnet 3.

[0051] like Figure 5 As shown, oil port A 101 is located directly below the valve core through hole 11, and oil port A 101 is also located directly below the second oil passage 112, which is connected to oil port A 101. Oil port B 102 is located directly below the valve core through hole 11, and oil port B 102 is also located directly below the fourth oil passage 114, which is connected to oil port B 102.

[0052] like Figure 6As shown, the third oil passage 113 slopes towards the rear side 12 of the valve body and is connected to the P-port 103. The first oil passage 111 and the fifth oil passage 115 slope towards the front side 13 of the valve body. The sixth oil passage 116, connecting the first oil passage 111 and the fifth oil passage 115, is located between the front side 13 of the valve body and the vertical plane where the valve core through hole 11 is located, and the sixth oil passage 116 is parallel to the valve core through hole 11. The sixth oil passage 116 is located directly above the T-port 104 and is connected to the T-port 104.

[0053] like Figure 7 As shown, the valve body above the valve core through hole 11 undergoes a material reduction process. The height ratio of the material reduction section 14 to the height of the valve body is 0.16:1, and the material reduction section 14 accounts for 16% of the entire valve body. At this time, the material reduction section 14 is recessed, and its top surface is also provided with rivet holes for riveting information tags. These information tags display specific information about the electromagnetic directional valve. The material reduction process for the valve body reduces the consumption of raw materials during casting and lowers the overall weight of the valve body, which helps reduce the overall weight of the engineering machinery and lower energy consumption.

[0054] The valve core 2 is installed inside the valve core through hole 11 and moves relative to the valve body to realize the closure or connection of different oil passages in the valve body.

[0055] like Figure 8 As shown, the valve core 2 has two axially arranged protrusions 21. A semi-circular groove 211 is provided at the switching point of the protrusions that contact the valve body oil passage. The semi-circular groove 211 prevents the valve core 2 from moving within the valve core through hole 11. This prevents the oil from experiencing a sudden connection between the third oil passage 113 and the second oil passage 112, or between the third oil passage 113 and the fourth oil passage 114, thus generating an impact force and allowing for a smoother transition of oil flow, reducing pressure loss and noise. Furthermore, the protrusions 21 have uniformly arranged grooves 212 on their surfaces, improving the stress on the valve core 2, reducing the lateral force on the valve core 2, and preventing the valve core 2 from jamming.

[0056] like Figure 1 As shown, the valve body 1 of the electromagnetic directional valve is equipped with electromagnets 3 at both ends. The electromagnets 3 are coaxial with the valve core 2. The valve core 2 is equipped with return springs 4 at both ends. A gasket 5 is placed between the return springs 4 and the valve core 2. The electromagnets 3 and the return springs 4 are used to drive the valve core 2 to move. The electromagnet 3 includes an electromagnet tube assembly 31 and a coil assembly 32. The electromagnet tube assembly 31 is installed on both sides of the valve body 1. The coil assembly 32 is installed on the electromagnet tube assembly 31 by plastic nuts 311. The end of the plastic nut 311 is provided with an annular groove 3111. A protective cap 312 is installed on the annular groove 3111 to prevent moisture from entering the solenoid valve at the end of the electromagnet tube assembly 31. The electromagnet plug 33 uses a Deutsche waterproof plug, so that the solenoid valve achieves an IP69 protection rating.

[0057] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A valve body for an electromagnetic directional valve, characterized in that, include: The bottom surface of the valve body is provided with oil ports A, B, P, and T; The valve body is provided with a valve core through hole parallel to the bottom surface of the valve body. The valve body is provided with a first oil passage, a second oil passage, a third oil passage, a fourth oil passage and a fifth oil passage in sequence along the axial direction of the valve core through hole. The second oil passage is connected to the A oil port, the third oil passage is connected to the P oil port, and the fourth oil passage is connected to the B oil port. The valve body is also provided with a sixth oil passage, which is connected to the T-port and also connects the first oil passage and the fifth oil passage. The sixth oil passage is located between the valve core through hole and the bottom surface of the valve body.

2. The valve body according to claim 1, characterized in that, The T-port and P-port are respectively located on both sides of the projection of the valve core through hole onto the bottom surface of the valve body, and the sixth oil passage is located directly above the T-port.

3. The valve body according to claim 1, characterized in that, The ratio of the height of the upper oil passage wall of the sixth oil passage to the distance from the bottom surface of the valve body to the center of the valve core through hole is 0.52:1 to 0.54:1; the ratio of the height of the lower oil passage wall of the sixth oil passage to the distance from the bottom surface of the valve body to the center of the valve core through hole is 0.15:1 to 0.25:

1.

4. The valve body according to claim 1, characterized in that, The valve body above the through hole of the valve core is reduced in material, and the ratio of the height of the reduced material to the height of the valve body is 0.15:1 to 0.18:

1. The valve body at the reduced material section accounts for 14% to 18% of the valve body.

5. The valve body according to claim 4, characterized in that, The recessed area where material is removed is provided with rivet holes for riveting information signs.

6. The valve body according to claim 1, characterized in that, The side walls of the first and fifth oil passages slope towards the sides near both ends of the valve body, forming a gentle transition surface.

7. The valve body according to claim 6, characterized in that, The inclination angle of the smooth transition surface is 7° to 9°.

8. An electromagnetic directional valve, characterized in that, include: The valve body is based on any one of claims 1 to 7; A valve core is installed in the through hole of the valve core and moves relative to the valve body to realize the closure or connection of different oil passages in the valve body; An electromagnet is placed at at least one end of the valve body to drive the valve core to move.

9. The electromagnetic directional valve according to claim 8, characterized in that, The valve core is provided with at least two protrusions along its axis, and a semi-circular groove is provided at the protrusion switching point that contacts the oil passage of the valve body. The surface of the protrusion is provided with uniform grooves.

10. The electromagnetic directional valve according to claim 8, characterized in that, The electromagnet includes an electromagnet assembly and a coil assembly. The electromagnet assembly is installed on at least one side of the valve body, and the coil assembly is installed on the electromagnet assembly by a plastic nut. The end of the plastic nut is provided with an annular groove for mounting a protective cap.

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