A logic reversing valve with variable function type

Abstract

The present invention discloses a logic reversing valve with variable function type, including a valve body, which is provided with an oil port P, an oil port T, an oil port A and an oil port B. The valve body is also provided with five valve chambers, each of which is equipped with an electromagnetic valve. The five valve chambers are defined as a first valve chamber, a second valve chamber, a third valve chamber, a fourth valve chamber and a fifth valve chamber. The bottom of the first valve chamber is connected to the oil port A, the bottom of the second valve chamber is connected to the oil port P, the bottom of the third valve chamber is connected to the oil port T, the bottom of the fourth valve chamber is connected to the oil port B, the side of the first valve chamber is connected to the second oil circuit, the side of the second valve chamber is connected to the fourth oil circuit, the side of the fourth valve chamber is connected to the third oil circuit, the side of the third valve chamber is connected to the first oil circuit, the side of the fifth valve chamber is connected to the fourth oil circuit, and the bottom of the fifth valve chamber is connected to the first oil circuit. The advantage is that multiple function switching can be achieved through simple logic programming, covering multiple functional types of magnetic reversing valves, and having a wide range of applications.

Description

Technical Field

[0001] The present invention belongs to the technical field of reversing valves, and in particular relates to a logic reversing valve with variable function types. Background Art

[0002] In the hydraulic industry, solenoid-operated directional valves are commonly used. They use an electromagnet to push a valve core, changing the direction of hydraulic oil flow within the valve, thereby actuating the actuator as needed. Directional valves typically have four oil ports: P, T, A, and B. These ports are connected to each other to achieve different functions. Directional reversal is divided into three positions: "left," "center," and "right." The hydraulic oil flow in the left and right positions is typically opposite, while the center position selects different functions based on the actuator's operating conditions.

[0003] Since there are dozens of commonly used functions, corresponding to different valve cores or valve bodies, the solenoid valves are also diverse. Furthermore, each valve can only have one function symbol. This not only increases production costs for manufacturers, but also makes identification difficult for customers in terms of model selection, use, and warehouse management, requiring relevant personnel to have certain professional knowledge. Furthermore, the single function of this valve makes it difficult to achieve different functions once installed on equipment. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a logic reversing valve with variable functional types, which can realize multiple functional switching through simple logic programming, covers the functional types of various magnetic reversing valves, and has a wide range of applications.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a logic reversing valve with variable function type, including a valve body, the valve body is provided with an oil port P, an oil port T, an oil port A and an oil port B, the valve body is also provided with five valve chambers, and the valve chambers are all equipped with solenoid valves, and the five valve chambers are defined as the first valve chamber, the second valve chamber, the third valve chamber, the fourth valve chamber and the fifth valve chamber, the bottom of the first valve chamber is connected to the oil port A through the first oil circuit, the bottom of the second valve chamber is connected to the oil port P through the second oil circuit, and the third valve chamber is connected to the oil port P through the second oil circuit. The bottom of the cavity is connected with the oil port T through the third oil circuit, the bottom of the fourth valve cavity is connected with the oil port B through the fourth oil circuit, the side of the first valve cavity is connected with the second oil circuit through the fifth oil circuit, the side of the second valve cavity is connected with the fourth oil circuit through the sixth oil circuit, the side of the fourth valve cavity is connected with the third oil circuit through the seventh oil circuit, the side of the third valve cavity is connected with the first oil circuit through the eighth oil circuit, the side of the fifth valve cavity is connected with the fourth oil circuit through the ninth oil circuit, and the bottom of the fifth valve cavity is connected with the first oil circuit through the tenth oil circuit.

[0006] Preferably, the oil port P, the oil port T, the oil port A and the oil port B are distributed at equal intervals along the circumferential direction on the lower end face of the valve body, the first valve chamber, the second valve chamber, the third valve chamber and the fourth valve chamber are distributed at equal intervals along the circumferential direction on the upper end face of the valve body, and the fifth valve chamber is located at the center of the upper end face of the valve body.

[0007] Preferably, the valve body is in a square shape, and the edge of the upper end face of the valve body is inclined from the inside outward and downward to form four inclined surfaces, and the first valve cavity, the second valve cavity, the third valve cavity, and the fourth valve cavity are distributed on the four inclined surfaces.

[0008] Preferably, the four corners of the upper end surface of the valve body are recessed downward to form grooves, and the bottom of the grooves is provided with bolt connection holes that pass through the lower end surface of the valve body.

[0009] Preferably, the solenoid valve is a cartridge valve, which includes an electric actuator, a valve sleeve and a valve core. The electric actuator is fixedly connected to one end of the valve sleeve, and the valve sleeve is inserted into the valve cavity. A through hole is provided on the side of the valve sleeve, which is connected to one end of the fifth oil circuit, the sixth oil circuit, the seventh oil circuit, the eighth oil circuit or the ninth oil circuit. The other end of the valve sleeve is connected to one end of the first oil circuit, the second oil circuit, the third oil circuit, the fourth oil circuit or the tenth oil circuit. The valve core is slidably arranged in the valve sleeve, and the electric actuator is used to control the movement of the valve core along the axial direction; when the electric actuator controls the valve core to move toward the bottom of the valve cavity, the valve core closes the through hole, so that the two oil circuits in the valve cavity are disconnected; when the electric actuator controls the valve core to move away from the bottom of the valve cavity, the through hole is connected, and at this time, the two oil circuits in the valve cavity are connected.

[0010] Preferably, the valve cavity is a stepped groove composed of a deep groove and a shallow groove, the deep groove is located at the bottom of the shallow groove, the inner diameter of the shallow groove is larger than the inner diameter of the deep groove, the bottom of the deep groove is connected to one end of the first oil circuit, the second oil circuit, the third oil circuit, the fourth oil circuit or the tenth oil circuit, and the side of the shallow groove is connected to one end of the fifth oil circuit, the sixth oil circuit, the seventh oil circuit, the eighth oil circuit or the ninth oil circuit; the lower outer side surface of the valve sleeve is sealed with the inner wall of the deep groove through a waterproof sealing ring, the middle of the valve sleeve is provided with the through hole, and the upper outer side surface of the valve sleeve is threadedly connected to the inner wall of the shallow groove.

[0011] Compared with the prior art, the advantages of the present invention are

[0012] 1. By setting five valve chambers and five solenoid valves on the valve body, the valve chambers are connected by oil circuits. When in use, the on and off of each solenoid valve can be controlled by simple logic programming to achieve multiple functional switching, covering various functional types of magnetic reversing valves and having a wide range of applications;

[0013] 2. This logic reversing valve covers the functional types of various magnetic reversing valves, that is, it can replace the functional types of various magnetic reversing valves, greatly reducing the types of reversing valves. Manufacturers only need to manufacture one valve body and a corresponding solenoid valve, which not only helps manufacturers control production costs, but also eliminates the need for customers to select models, making it convenient to use and facilitate warehouse management. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0015] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0016] Figure 3 It is a schematic diagram of the partial explosion structure of the present invention;

[0017] Figure 4 A top view of the valve body of the present invention;

[0018] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure at AA in the middle;

[0019] Figure 6 for Figure 4 Schematic diagram of the cross-sectional structure at the middle BB;

[0020] Figure 7 It is a schematic diagram of the local structure of the present invention;

[0021] Figure 8 It is a structural schematic diagram of the solenoid valve in the present invention.

[0022] In the figure: 1. valve body; 11. oil port P; 12. oil port T; 13. oil port A; 14. oil port B; 15. valve chamber; 15(a) first valve chamber; 15(b) second valve chamber; 15(c) third valve chamber; 15(d) fourth valve chamber; 15(e) fifth valve chamber; 151. deep groove; 152. shallow groove; 16(a) first oil circuit; 16(b) second oil circuit; 16(c) third oil circuit; 16(d) fourth oil circuit; 16(e) fifth oil circuit; 16(f) sixth oil circuit; 16(g) seventh oil circuit; 16(h) eighth oil circuit; 16(i) ninth oil circuit; 16(j) tenth oil circuit; 17. inclined surface; 18. groove; 19. bolt connection hole; 2. solenoid valve; 21. electric actuator; 22. valve sleeve; 221. through hole; 23. valve core; 3. waterproof sealing ring. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0024] Example 1: Figures 1 to 6 As shown, a logic reversing valve with variable function type includes a valve body 1, on which an oil port P11, an oil port T12, an oil port A13 and an oil port B14 are provided. The valve body 1 is also provided with five valve chambers 15, in which a solenoid valve 2 is inserted. The five valve chambers 15 are defined as a first valve chamber 15(a), a second valve chamber 15(b), a third valve chamber 15(c), a fourth valve chamber 15(d) and a fifth valve chamber 15(e). The bottom of the first valve chamber 15(a) is connected to the oil port A13 through a first oil circuit 16(a), the bottom of the second valve chamber 15(b) is connected to the oil port P11 through a second oil circuit 16(b), the bottom of the third valve chamber 15(c) is connected to the oil port T12 through a third oil circuit 16(c), and the fourth valve chamber 15(e) is connected to the oil port P11 through a third oil circuit 16(c). The bottom of the cavity 15(d) is connected to the oil port B14 through the fourth oil circuit 16(d), the side of the first valve cavity 15(a) is connected to the second oil circuit 16(b) through the fifth oil circuit 16(e), the side of the second valve cavity 15(b) is connected to the fourth oil circuit 16(d) through the sixth oil circuit 16(f), the side of the fourth valve cavity 15(d) is connected to the third oil circuit 16(c) through the seventh oil circuit 16(g), the side of the third valve cavity 15(c) is connected to the first oil circuit 16(a) through the eighth oil circuit 16(h), the side of the fifth valve cavity 15(e) is connected to the fourth oil circuit 16(d) through the ninth oil circuit 16(i), and the bottom of the fifth valve cavity 15(e) is connected to the first oil circuit 16(a) through the tenth oil circuit 16(j).

[0025] In this embodiment, the five solenoid valves 2 are electrically connected to the controller respectively, and the controller controls the on and off of each solenoid valve 2. When the different solenoid valves 2 gain or lose electricity and match the oil circuit conditions in the valve body 1, the oil port P11, oil port T12, oil port A13, and oil port B14 can be connected or disconnected at will, thereby realizing a variety of functional types to adapt to complex and changeable working conditions.

[0026] Of course, this logic reversing valve can also be used as a pilot valve, and can be used in conjunction with a cover-type two-way cartridge valve to achieve applications with a larger flow rate.

[0027] Example 2: Figures 1 to 6 As shown, the rest of the parts are the same as those in Example 1, except that the oil port P11, the oil port T12, the oil port A13 and the oil port B14 are distributed on the lower end face of the valve body 1 at equal intervals along the circumferential direction, the first valve cavity 15(a), the second valve cavity 15(b), the third valve cavity 15(c) and the fourth valve cavity 15(d) are distributed on the upper end face of the valve body 1 at equal intervals along the circumferential direction, and the fifth valve cavity 15(e) is located at the center of the upper end face of the valve body 1.

[0028] In this embodiment, the valve body 1 is in a square shape, with the edge of the upper end surface of the valve body 1 sloping downward from the inside outward to form four inclined surfaces 17. The first valve cavity 15(a), the second valve cavity 15(b), the third valve cavity 15(c), and the fourth valve cavity 15(d) are distributed on the four inclined surfaces 17. This allows the solenoid valves 2 inserted into the first valve cavity 15(a), the second valve cavity 15(b), the third valve cavity 15(c), and the fourth valve cavity 15(d) to be arranged radially, ensuring that there is space around each solenoid valve 2, making it easier for workers to disassemble and install the solenoid valves 2.

[0029] In this embodiment, the four corners of the upper end surface of the valve body 1 are recessed downward to form grooves 18 , and bolt connection holes 19 penetrating the lower end surface of the valve body 1 are provided at the bottom of the grooves 18 .

[0030] Example 3: Figure 7 and Figure 8 As shown, the rest of the parts are the same as those in Example 1, except that the solenoid valve 2 is a cartridge valve, which includes an electric actuator 21, a valve sleeve 22 and a valve core 23. The electric actuator 21 is fixedly connected to one end of the valve sleeve 22, and the valve sleeve 22 is inserted into the valve cavity 15. A through hole 221 is provided on the side of the valve sleeve 22, which is connected to one end of the fifth oil circuit 16(e), the sixth oil circuit 16(f), the seventh oil circuit 16(g), the eighth oil circuit 16(h) or the ninth oil circuit 16(i). The other end of the valve sleeve 22 is connected to one end of the first oil circuit 16(a), the second oil circuit 16(b), the third oil circuit 16(c), the fourth oil circuit 16(d) or the tenth oil circuit 16(j). The valve core 23 is slidably arranged in the valve sleeve 22, and the electric actuator 21 is used to control the movement of the valve core 23 along the axial direction.

[0031] When the electric actuator 21 controls the valve core 23 to move toward the bottom of the valve chamber 15, the valve core 23 closes the through hole 221, disconnecting the two oil paths within the valve chamber 15. When the electric actuator 21 controls the valve core 23 to move away from the bottom of the valve chamber 15, the through hole 221 becomes conductive, connecting the two oil paths within the valve chamber 15. To facilitate control, when the electric actuator 21 is de-energized, the valve core 23 closes the through hole 221, disconnecting the two oil paths within the valve chamber 15. When the electric actuator 21 is energized, the valve core 23 retracts, connecting the two oil paths within the valve chamber 15.

[0032] In this embodiment, the valve chamber 15 is a stepped groove consisting of a deep groove 151 and a shallow groove 152. The deep groove 151 is located at the bottom of the shallow groove 152. The inner diameter of the shallow groove 152 is larger than the inner diameter of the deep groove 151. The bottom of the deep groove 151 is connected to one end of the first oil circuit 16 (a), the second oil circuit 16 (b), the third oil circuit 16 (c), the fourth oil circuit 16 (d) or the tenth oil circuit 16 (j), and the side of the shallow groove 152 is connected to one end of the fifth oil circuit 16 (e), the sixth oil circuit 16 (f), the seventh oil circuit 16 (g), the eighth oil circuit 16 (h) or the ninth oil circuit 16 (i); the lower outer side surface of the valve sleeve 22 is sealed with the inner wall of the deep groove 151 through the waterproof sealing ring 3, a through hole 221 is provided in the middle of the valve sleeve 22, and the upper outer side surface of the valve sleeve 22 is threadedly connected to the inner wall of the shallow groove 152. The waterproof sealing ring 3 is used to prevent oil from leaking from between the valve cavity 15 and the valve sleeve 22. Furthermore, the upper outer side surface of the valve sleeve 22 and the inner side wall of the shallow groove 152 are also provided with a waterproof sealing ring 3 to improve the waterproof sealing effect.

[0033] In this embodiment, a plurality of O-rings distributed along the axial direction are provided between the outer wall of the valve core 23 and the inner wall of the valve sleeve 22 . The O-rings are used to prevent oil from leaking between the valve sleeve 22 and the valve core 23 .

[0034] Taking the traditional "E" type solenoid reversing valve as an example, its functions are as follows:

[0035] 1. When both solenoid valves are de-energized, the hydraulic valve is in the middle position, that is, the oil port P, oil port T, oil port A, and oil port B are not connected, and each oil port is in a closed state;

[0036] 2. When the right end solenoid valve is energized, its valve core is in the left position. At this time, oil port P is connected to oil port A, and oil port T is connected to oil port B.

[0037] 3. When the left end solenoid valve is energized, its valve core is in the right position. At this time, oil port P is connected to oil port B, and oil port T is connected to oil port A.

[0038] This logic reversing valve can realize the function of "E" type solenoid reversing valve through the following actions, specifically:

[0039] 1. All five solenoid valves 2 are de-energized, and oil ports P11, T12, A13, and B14 are not connected, then the neutral position function is realized;

[0040] 2. When the solenoid valve 2 in the first valve chamber 15(a) and the solenoid valve 2 in the fourth valve chamber 15(d) are energized, and the solenoid valve 2 in the second valve chamber 15(b), the solenoid valve 2 in the third valve chamber 15(c), and the solenoid valve 2 in the fifth valve chamber 15(e) are de-energized, port P11 is connected to port A13, and port T12 is connected to port B14, realizing the left position function;

[0041] 3. When the solenoid valve 2 in the second valve chamber 15(b) and the solenoid valve 2 in the third valve chamber 15(c) are energized, and the solenoid valve 2 in the first valve chamber 15(a), the solenoid valve 2 in the fourth valve chamber 15(d), and the solenoid valve 2 in the fifth valve chamber 15(e) are de-energized, port P11 is connected to port B14, and port T12 is connected to port A13, thus achieving the right position function.

[0042] If you want to use this logic reversing valve to realize the functions of other functional forms of reversing valves such as "H", "Y", "L", etc., you only need to change the electrical signal to control the actions of different solenoid valves 2 without replacing any parts.

Claims

1. A logic reversing valve with variable function type, comprising a valve body, wherein the valve body is provided with an oil port P, an oil port T, an oil port A and an oil port B, characterized in that The valve body is further provided with five valve chambers, each of which is equipped with a solenoid valve. The five valve chambers are defined as a first valve chamber, a second valve chamber, a third valve chamber, a fourth valve chamber and a fifth valve chamber. The bottom of the first valve chamber is connected to the oil port A through a first oil passage, the bottom of the second valve chamber is connected to the oil port P through a second oil passage, the bottom of the third valve chamber is connected to the oil port T through a third oil passage, the bottom of the fourth valve chamber is connected to the oil port B through a fourth oil passage, the side of the first valve chamber is connected to the second oil passage through a fifth oil passage, the side of the second valve chamber is connected to the fourth oil passage through a sixth oil passage, the side of the fourth valve chamber is connected to the third oil passage through a seventh oil passage, the side of the third valve chamber is connected to the first oil passage through an eighth oil passage, the side of the fifth valve chamber is connected to the fourth oil passage through a ninth oil passage, and the bottom of the fifth valve chamber is connected to the first oil passage through a tenth oil passage. The oil port P, the oil port T, the oil port A and the oil port B are distributed on the lower end surface of the valve body at equal intervals along the circumferential direction; the first valve cavity, the second valve cavity, the third valve cavity and the fourth valve cavity are distributed on the upper end surface of the valve body at equal intervals along the circumferential direction; the fifth valve cavity is located at the center of the upper end surface of the valve body; The solenoid valve is a cartridge valve, which includes an electric actuator, a valve sleeve, and a valve core. The electric actuator is fixedly connected to one end of the valve sleeve, and the valve sleeve is inserted into the valve cavity. A through hole is provided on the side of the valve sleeve, which is connected to one end of the fifth oil circuit, the sixth oil circuit, the seventh oil circuit, the eighth oil circuit, or the ninth oil circuit. The other end of the valve sleeve is connected to one end of the first oil circuit, the second oil circuit, the third oil circuit, the fourth oil circuit, or the tenth oil circuit. The valve core is slidably provided in the valve sleeve, and the electric actuator is used to control the movement of the valve core along the axial direction. When the electric actuator controls the valve core to move toward the bottom of the valve cavity, the valve core closes the through hole, disconnecting the two oil paths in the valve cavity; when the electric actuator controls the valve core to move away from the bottom of the valve cavity, the through hole is opened, and at this time the two oil paths in the valve cavity are connected.

2. A logic reversing valve with variable function type according to claim 1, characterized in that The valve body is in a square shape, and the edge of the upper end surface of the valve body is inclined from the inside outward and downward to form four inclined surfaces. The first valve cavity, the second valve cavity, the third valve cavity, and the fourth valve cavity are distributed on the four inclined surfaces.

3. A logic reversing valve with variable function type according to claim 2, characterized in that The four corners of the upper end surface of the valve body are recessed downward to form grooves, and the bottom of the grooves is provided with bolt connection holes that penetrate the lower end surface of the valve body.

4. A logic reversing valve with variable function type according to claim 1, characterized in that The valve cavity is a stepped groove composed of a deep groove and a shallow groove. The deep groove is located at the bottom of the shallow groove. The inner diameter of the shallow groove is larger than the inner diameter of the deep groove. The bottom of the deep groove is connected to one end of the first oil circuit, the second oil circuit, the third oil circuit, the fourth oil circuit or the tenth oil circuit, and the side of the shallow groove is connected to one end of the fifth oil circuit, the sixth oil circuit, the seventh oil circuit, the eighth oil circuit or the ninth oil circuit; the lower outer side surface of the valve sleeve is sealed with the inner wall of the deep groove through a waterproof sealing ring, the through hole is provided in the middle of the valve sleeve, and the upper outer side surface of the valve sleeve is threadedly connected to the inner wall of the shallow groove.

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