Two-way cartridge valve with state monitoring function and hydraulic control system

Abstract

The invention discloses a two-way cartridge valve with a state monitoring function and a hydraulic control system with the two-way cartridge valve, and belongs to the technical field of two-way cartridge valves. The two-way cartridge valve with the state monitoring function comprises a valve body assembly which comprises a valve sleeve and a valve element, the valve element is provided with a first mounting hole, and the first mounting hole is provided with a closed end; the detection rod assembly comprises a detection rod body and a connecting rod, the connecting rod is provided with a first abutting part, the connecting rod is arranged in the first mounting hole, the first abutting part is in contact with the closed end, and the relative positions of the connecting rod and the detection rod body in the axial direction of the valve element are adjustable; the cover plate is connected with the valve sleeve, and a second mounting hole and a detection mounting hole are formed in the cover plate; a force applying element for applying a closing force to the first abutting portion; the state detection assembly comprises an inductive head and a switch, the inductive head is arranged on the detection rod body, and the switch is arranged in the detection mounting hole; and the locking assembly is used for locking the detection rod body and the connecting rod.

Description

Technical Field

[0001] The invention relates to the technical field of two-way cartridge valves, and in particular to a two-way cartridge valve with state monitoring and a hydraulic control system. Background Art

[0002] As the core system, two-way cartridge valves and their control systems are widely used in casting and forging equipment, metallurgical machinery, water conservancy and hydropower industries. With the improvement of the safety requirements of the main equipment, the two-way cartridge valve control system also needs to have perfect safety control performance. The two-way cartridge valve with status monitoring plays an important role.

[0003] In the prior art, a position switch is provided in the axial direction of the two-way cartridge valve relative to the valve core, and the state of the two-way cartridge valve is monitored through physical contact with the position switch. Since the valve core and the position switch are provided relative to each other in the axial direction, the stroke of the valve core is limited by the range of the position switch, and the valve core cannot be applied to all specifications of two-way cartridge valve cores, thereby limiting the application scope of the two-way cartridge valve.

[0004] Therefore, how to design a two-way cartridge valve that can perform status monitoring and is compatible with a variety of valve core strokes is a technical problem that technical personnel in this field currently need to solve. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a two-way cartridge valve with state monitoring, so as to facilitate the two-way cartridge valve to be able to perform state monitoring and be compatible with a variety of valve core strokes.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: A two-way cartridge valve with state monitoring, comprising: A valve body assembly, the valve body assembly comprising a valve sleeve and a valve core, the valve core is arranged in the valve sleeve, and the valve core is provided with a first mounting hole along its axial direction, the first mounting hole having an open end and a closed end arranged oppositely; A detection rod assembly, the detection rod assembly comprising a detection rod body and a connecting rod, one end of the connecting rod is provided with a first abutment portion extending along its radial direction, the connecting rod is inserted into the first mounting hole and the first abutment portion can contact the inner wall of the closed end, the other end of the connecting rod is detachably connected to the detection rod body, and the relative position of the connecting rod and the detection rod body in an axial direction parallel to the valve core is adjustable; A cover plate connected to the valve sleeve, the cover plate is provided with a second mounting hole running through the cover plate in an axial direction, the second mounting hole is coaxially connected to the first mounting hole, the cover plate is further provided with a detection mounting hole, and the axis of the detection mounting hole and the axis of the second mounting hole meet a vertical condition; a force-applying element, disposed in the valve core, for applying a closing force to the first abutting portion, the closing force being directed from the cover plate toward the first abutting portion; A state detection component, the state detection component includes a sensor head and a switch, the sensor head is arranged at one end of the detection rod body away from the connecting rod, the switch is arranged in the detection installation hole, when the sensor head reaches a preset position, the switch matched with the sensor head can send an in-position signal; and The locking assembly is used to lock the detection rod body and the connecting rod.

[0007] Optionally, in the above-mentioned two-way cartridge valve with state monitoring, the cover plate is further provided with a locking adjustment hole, the axis of the locking adjustment hole and the axis of the second mounting hole meet the vertical condition, and the locking adjustment hole and the detection mounting hole are arranged to avoid each other; Among them, a locking hole and a detection rod connecting hole are provided on the connecting rod, the detection rod connecting hole is formed by an axial extension of the connecting rod, the locking hole is formed by a radial extension of the connecting rod, the locking hole and the detection rod connecting hole are connected, and the locking hole is connected to the locking adjustment hole and is coaxially arranged, and the locking assembly includes a set screw that can be threadedly connected to the locking hole.

[0008] Optionally, in the above-mentioned two-way cartridge valve with state monitoring, the detection rod connecting hole and the detection rod body are connected by threads and fixed by a locking nut.

[0009] Optionally, in the above-mentioned two-way cartridge valve with state monitoring, the ends of the locking adjustment hole and the second mounting hole are both provided with blocking elements to achieve sealing.

[0010] Optionally, in the above-mentioned two-way cartridge valve with state monitoring, the sensing head and the switch are signal-connected, and when the distance between the sensing head and the switch is within a sensing distance interval, the switch sends an in-position signal.

[0011] Optionally, in the above-mentioned two-way cartridge valve with state monitoring, the force-applying element includes an elastic element, the elastic element is sleeved on the outside of the connecting rod, and a second abutment portion is provided on an end surface of the cover plate close to the valve sleeve, and both ends of the elastic element are in contact with the first abutment portion and the second abutment portion respectively.

[0012] Optionally, in the above-mentioned two-way cartridge valve with state monitoring, the second abutment portion is a groove formed by being recessed from one end of the cover plate close to the valve core to one end away from the valve core.

[0013] Optionally, in the above-mentioned two-way cartridge valve with state monitoring, the detection mounting hole includes a first hole segment and a second hole segment, the first hole segment and the second hole segment are arranged in sequence from the outer wall of the cover plate toward the center of the cover plate, and the aperture of the first hole segment is larger than the aperture of the second hole segment.

[0014] Optionally, in the above-mentioned two-way cartridge valve with state monitoring, a seal is provided between the valve sleeve and the cover plate.

[0015] A hydraulic control system comprises the two-way cartridge valve as described above.

[0016] When the two-way cartridge valve with state monitoring provided by the present invention is used, the force-applying element applies a closing force to the first abutting portion. Since the closing force is directed from the cover plate toward the first abutting portion, the force-applying element pushes the connecting rod through the first abutting portion, and the connecting rod pushes the valve core to form a seal between the valve core and the valve sleeve, and the valve body assembly is in a closed state, that is, the two-way cartridge valve is in a closed position. Since the detection rod body and the connecting rod are detachably connected, the relative positions of the connecting rod and the detection rod body in an axial direction parallel to the valve core are adjustable. Under the action of the force-applying element, the first abutting portion of the connecting rod can always be located at the closed end of the first mounting hole, and the induction head of the adjustment state detection assembly is arranged at the detection rod body. The detecting rod body is away from one end of the connecting rod. At this time, the detecting rod body and the connecting rod have not been fastened together by fasteners. The position of the detecting rod body relative to the connecting rod in the axial direction parallel to the valve core is adjusted until the switch sends a position signal, indicating that the position is a position in which the switch can detect that the valve core of this specification is in a closed position. At this time, the detecting rod body and the connecting rod are locked by the locking assembly to lock the relative position of the detecting rod body and the connecting rod. After the detecting rod body and the connecting rod are locked and the detecting rod body and the connecting rod are removed, the detecting rod body and the connecting rod are fastened together by a detachable connection, and then all parts are reinstalled. The adjustment of the two-way cartridge valve with status monitoring is completed.

[0017] It can be seen that the two-way cartridge valve with state monitoring provided by the present invention arranges the state detection component on one side of the detection rod component, adopts the method of lateral detection of the valve core position, and adjusts the relative position of the detection rod body and the connecting rod in the axial direction of the valve core to adapt to the valve core state monitoring of different range specifications, which is conducive to compatibility with valve cores of various range specifications and expands the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic cross-sectional structure diagram of a two-way cartridge valve with state monitoring provided in an embodiment of the present invention.

[0020] Among them, 1 is the valve sleeve, 2 is the valve core, 3 is the spring, 4 is the connecting rod, 5 is the detection rod body, 6 is the fixing nut, 7 is the switch, 8 is the cover plate, 9 is the screw plug, and 10 is the fixing screw. DETAILED DESCRIPTION

[0021] In view of this, the core of the present invention is to provide a two-way cartridge valve with state monitoring, so as to facilitate the two-way cartridge valve to be able to perform state monitoring and be compatible with a variety of valve core strokes.

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figure 1 As shown, an embodiment of the present invention discloses a two-way cartridge valve with state monitoring, including a valve body assembly, a detection rod assembly, a cover plate 8, a force-applying element, a state detection assembly and a locking assembly.

[0024] Wherein, the valve body assembly includes a valve sleeve 1 and a valve core 2, the valve core 2 is arranged in the valve sleeve 1, and the valve core 2 is provided with a first mounting hole along its axial direction, and the first mounting hole has an open end and a closed end arranged oppositely; the detection rod assembly includes a detection rod body 5 and a connecting rod 4, one end of the connecting rod 4 is provided with a first abutment portion extending along its radial direction, the connecting rod 4 is inserted in the first mounting hole and the first abutment portion can contact the inner wall of the closed end, the other end of the connecting rod 4 is detachably connected to the detection rod body 5, and the relative position of the connecting rod 4 and the detection rod body 5 in the axial direction parallel to the valve core 2 is adjustable; the cover plate 8 is connected to the valve sleeve 1, and the cover plate 8 is provided with a through-hole A second axial mounting hole is coaxially connected with the first mounting hole, and the cover plate 8 is also provided with a detection mounting hole, and the axis of the detection mounting hole and the axis of the second mounting hole meet the vertical condition; the force-applying element is arranged in the valve core 2, and is used to apply a closing force to the first abutting part, and the closing force is from the cover plate 8 toward the first abutting part; the state detection component includes a sensor head and a switch 7, the sensor head is arranged at the end of the detection rod body 5 away from the connecting rod 4, and the switch 7 is arranged in the detection mounting hole. When the sensor head reaches the preset position, the switch 7 cooperating with the sensor head can send an in-position signal; the locking component is used to lock the detection rod body 5 and the connecting rod 4.

[0025] When using the two-way cartridge valve with state monitoring provided by the present invention, the force-applying element applies a closing force to the first abutting portion. Since the closing force is directed from the cover plate 8 toward the first abutting portion, the force-applying element pushes the connecting rod 4 through the first abutting portion, and the connecting rod 4 pushes the valve core 2, so that a seal is formed between the valve core 2 and the valve sleeve 1, and the valve body assembly is in a closed state, that is, the two-way cartridge valve is in a closed position. Since the detection rod body 5 is detachably connected to the connecting rod 4, the relative position of the connecting rod 4 and the detection rod body 5 in an axial direction parallel to the valve core 2 is adjustable. Under the action of the force-applying element, the first abutting portion of the connecting rod 4 can always be located at the closed end of the first mounting hole, and the induction head of the adjustment state detection assembly is arranged on the detection rod body. 5 is away from one end of the connecting rod 4. At this time, the detection rod body 5 and the connecting rod 4 have not been fastened together by fasteners. The position of the detection rod body 5 relative to the connecting rod 4 in the axial direction parallel to the valve core 2 is adjusted until the switch 7 sends a position signal, indicating that the switch 7 can detect that the valve core 2 of this specification is in a closed position. At this time, the detection rod body 5 and the connecting rod 4 are locked by the locking assembly, so that the relative position of the detection rod body 5 and the connecting rod 4 is locked and fixed. After the detection rod body 5 and the connecting rod 4 are locked and the detection rod body 5 and the connecting rod 4 are removed, the detection rod body 5 and the connecting rod 4 are fastened together by a detachable connection method, and then all parts are reinstalled. The adjustment of the two-way cartridge valve with status monitoring is completed.

[0026] It can be seen that the two-way cartridge valve with state monitoring provided by the present invention arranges the state detection component on one side of the detection rod component, adopts the method of lateral detection of the position of the valve core 2, and adjusts the relative positions of the detection rod body 5 and the connecting rod 4 in the axial direction of the valve core 2 to adapt to the state monitoring of the valve core 2 with different range specifications, which is conducive to compatibility with valve cores 2 of various range specifications and expands the scope of application.

[0027] It should be understood that a hexagonal hole may also be provided on the upper end surface of the sensor head to facilitate fine-tuning of the position of the sensor head after all parts are assembled, thereby improving the convenience of subsequent fine-tuning.

[0028] In addition, the locking assembly can lock the detection rod body 5 and the connecting rod 4 by means of snap-on force, friction force or magnetic adsorption, and any method that can meet the locking requirements is within the protection scope of the present invention.

[0029] Optionally, in a specific embodiment of the present invention, the cover plate 8 is also provided with a locking adjustment hole, the axis of the locking adjustment hole and the axis of the second mounting hole meet the vertical condition, and the locking adjustment hole and the detection mounting hole are avoided to avoid the operating space being too narrow during the adjustment of the detection rod assembly, thereby preventing interference with the part protruding from the outer edge of the cover plate 8.

[0030] Specifically, a locking hole and a detection rod connecting hole are provided on the connecting rod 4. The detection rod connecting hole is formed by an axial extension of the connecting rod 4, so that the connecting rod 4 can be connected to the detection rod body 5 through the detection rod connecting hole. The locking hole is formed by a radial extension of the connecting rod 4. The locking hole and the detection rod connecting hole are connected, and the locking hole is connected to the locking adjustment hole and is coaxially arranged. The locking assembly includes a set screw 10 that can be threadedly connected to the locking hole, so that the set screw 10 can be rotated in the locking adjustment hole, so that the end of the set screw 10 can pass through the locking hole and press against the detection rod body 5 located in the detection rod connecting hole, thereby realizing the positioning of the connecting rod 4 and the detection rod body 5.

[0031] It should be noted that the axis of the locking adjustment hole and the axis of the second mounting hole satisfying the perpendicularity condition means that the axis of the locking adjustment hole and the axis of the second mounting hole are perpendicular to each other or close to perpendicularity.

[0032] In addition, the above-mentioned connecting rod 4 and the detection rod body 5 can be adjusted in position parallel to the axial direction of the valve core 2 by means of threaded rotation or sliding and then clamping. The connecting rod 4 and the detection rod body 5 can be detachably connected by means of threaded connection or clamping. As long as the connection method can meet the use requirements, it belongs to the protection scope of the present invention; optionally, the detection rod connecting hole and the detection rod body 5 provided in the embodiment of the present invention are connected by threads and fixed by a locking nut 6, which is convenient for adjusting the relative position of the detection rod body 5 and the connecting rod 4 in the axial direction parallel to the valve core 2, and the self-locking performance of the threaded connection itself makes it possible to maintain the relative position of the connecting rod 4 and the detection rod body 5 after the relative position is determined, which has the advantages of simple structure and easy operation.

[0033] In addition, the ends of the locking adjustment hole and the second mounting hole are provided with sealing elements to achieve sealing; the sealing elements involved in the present invention can be metal parts, rubber parts or other types of sealing elements, as long as the element type can achieve sealing, it belongs to the protection scope of the present invention; optionally, the sealing element provided in the embodiment of the present invention is a screw plug 9.

[0034] Furthermore, when the above-mentioned sensing head reaches the preset position, the switch 7 can send an in-position signal by means of mechanical contact or signal transmission cooperation with the sensing head. Any method that can send an in-position signal belongs to the protection scope of the present invention; optionally, the sensing head and the switch 7 provided in the embodiment of the present invention are connected by signal, and when the distance between the sensing head and the switch 7 is within the sensing distance interval, the switch 7 sends an in-position signal, that is, non-contact position determination is achieved through this signal cooperation method, which reduces the rigid contact between the slender moving parts such as the detection rod assembly and the mechanical structure, reduces the failure rate of components, and improves reliability.

[0035] The above-mentioned state detection component can be a proximity switch or a non-contact displacement sensor, etc. As long as it is a type that can achieve non-contact in-place detection, it belongs to the protection scope of the present invention; optionally, the state detection component provided in the embodiment of the present invention is a proximity switch.

[0036] In addition, the above-mentioned arrival signal can be a photoelectric signal or a sound signal, etc. As long as the signal type can meet the use requirements, it belongs to the protection scope of the present invention.

[0037] The force-applying element involved in the present invention can be an elastic element, a magnetic element or other types of elements, as long as it can apply a closing force to the first abutment portion, so that the force-applying element pushes the valve core 2 through the first abutment portion to close the valve core 2 and keep it in a closed state.

[0038] Optionally, in a specific embodiment of the present invention, the force-applying element includes an elastic element, which is sleeved on the outer side of the connecting rod 4, and a second abutment portion is provided on an end face of the cover plate 8 close to the valve sleeve 1, and both ends of the elastic element are respectively in contact with the first abutment portion and the second abutment portion, so that the first abutment portion is pushed by the deformation force of the elastic element, and the first abutment portion transmits the closing force to the valve core 2 to close the valve core 2.

[0039] The elastic element may be a spring 3, rubber or other types of elastic elements, etc. As long as the element type can meet the use requirements, it belongs to the protection scope of the present invention; optionally, the elastic element provided in the embodiment of the present invention is a spring 3.

[0040] Furthermore, the second abutment portion may directly utilize the end surface of the cover plate 8 close to the valve core 2, or may be other structures additionally provided on the cover plate 8, as long as it can meet the use requirements. Optionally, in a specific embodiment of the present invention, the second abutment portion is a groove formed by being recessed from the end of the cover plate 8 close to the valve core 2 to the end away from the valve core 2, so as to place one end of the spring 3 in the groove, limit the compression direction of the spring 3, and prevent insufficient closing force on the valve core 2 due to the skewness of the spring 3.

[0041] In addition, the above-mentioned detection and installation hole includes a first hole segment and a second hole segment, and the first hole segment and the second hole segment are arranged in sequence from the outer wall of the cover plate 8 toward the center of the cover plate 8, and the hole diameter of the first hole segment is larger than the hole diameter of the second hole segment, so as to form an operating space in the first hole segment, which is convenient for installing and disassembling the switch 7.

[0042] A sealing member is provided between the valve sleeve 1 and the cover plate 8 to form a seal between the valve sleeve 1 and the cover plate 8. The sealing member may be a gasket, a rubber ring or other type of element, as long as it can play a sealing role.

[0043] In addition, the present invention also discloses a hydraulic control system, including the two-way cartridge valve as described above, and thus has all the technical effects of the above-mentioned two-way cartridge valve, which will not be described in detail herein.

[0044] The terms "first" and "second" and the like in the specification and claims of the present invention and the above drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but may include steps or units that are not listed.

[0045] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A two-way cartridge valve with state monitoring, characterized in that: include: A valve body assembly, the valve body assembly comprising a valve sleeve and a valve core, the valve core is arranged in the valve sleeve, and the valve core is provided with a first mounting hole along its axial direction, the first mounting hole having an open end and a closed end arranged oppositely; A detection rod assembly, the detection rod assembly comprising a detection rod body and a connecting rod, one end of the connecting rod is provided with a first abutment portion extending along its radial direction, the connecting rod is inserted into the first mounting hole and the first abutment portion can contact the inner wall of the closed end, the other end of the connecting rod is detachably connected to the detection rod body, and the relative position of the connecting rod and the detection rod body in an axial direction parallel to the valve core is adjustable; A cover plate connected to the valve sleeve, the cover plate is provided with a second mounting hole running through the cover plate in an axial direction, the second mounting hole is coaxially connected to the first mounting hole, the cover plate is further provided with a detection mounting hole, and the axis of the detection mounting hole and the axis of the second mounting hole meet a vertical condition; a force-applying element, disposed in the valve core, for applying a closing force to the first abutting portion, the closing force being directed from the cover plate toward the first abutting portion; A state detection component, the state detection component includes a sensor head and a switch, the sensor head is arranged at one end of the detection rod body away from the connecting rod, the switch is arranged in the detection installation hole, when the sensor head reaches a preset position, the switch matched with the sensor head can send an in-position signal; and The locking assembly is used to lock the detection rod body and the connecting rod.

2. The two-way cartridge valve with state monitoring according to claim 1, characterized in that: The cover plate is further provided with a locking adjustment hole, the axis of the locking adjustment hole and the axis of the second mounting hole meet the vertical condition, and the locking adjustment hole and the detection mounting hole are arranged to avoid each other; Among them, a locking hole and a detection rod connecting hole are provided on the connecting rod, the detection rod connecting hole is formed by an axial extension of the connecting rod, the locking hole is formed by a radial extension of the connecting rod, the locking hole and the detection rod connecting hole are connected, and the locking hole is connected to the locking adjustment hole and is coaxially arranged, and the locking assembly includes a set screw that can be threadedly connected to the locking hole.

3. The two-way cartridge valve with state monitoring according to claim 2, characterized in that: The detection rod connecting hole and the detection rod body are connected by threads and fixed by a fixing nut.

4. The two-way cartridge valve with state monitoring according to claim 2, characterized in that: The ends of the locking adjustment hole and the second mounting hole are both provided with blocking elements to achieve sealing.

5. The two-way cartridge valve with state monitoring according to claim 1, characterized in that: The sensing head is connected to the switch by signal, and when the distance between the sensing head and the switch is within the sensing distance interval, the switch sends a position signal.

6. The two-way cartridge valve with state monitoring according to claim 1, characterized in that: The force-applying element comprises an elastic element, which is sleeved on the outer side of the connecting rod. A second abutting portion is provided on an end surface of the cover plate close to the valve sleeve, and two ends of the elastic element are in contact with the first abutting portion and the second abutting portion respectively.

7. The two-way cartridge valve with state monitoring according to claim 6, characterized in that: The second abutting portion is a groove formed by being recessed from one end of the cover plate close to the valve core to one end away from the valve core.

8. The two-way cartridge valve with state monitoring according to claim 1, characterized in that: The detection installation hole includes a first hole segment and a second hole segment, the first hole segment and the second hole segment are sequentially arranged from the outer wall of the cover plate toward the center of the cover plate, and the aperture of the first hole segment is larger than the aperture of the second hole segment.

9. The two-way cartridge valve with state monitoring according to claim 1, characterized in that: A sealing member is arranged between the valve sleeve and the cover plate.

10. A hydraulic control system, characterized in that: It comprises a two-way cartridge valve as described in any one of claims 1 to 7.

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