Plug-in proportional valve for quick installation

Abstract

The present invention belongs to the technical field of convenient installation of proportional valves, and discloses a plug-in proportional valve that is easy to install quickly, including a valve body, both sides of the valve body are provided with solenoid valve core assemblies, the solenoid valve core assembly includes an embedded plug-in assembly docked with the valve body; the embedded plug-in assembly includes a plug-in valve seat plugged into the valve body, and the plug-in valve seat is connected to the solenoid valve core assembly, the top of the valve body is fixed with an electric controller by screws, and the front and rear sides of the valve body are provided with external bracket assemblies, through the plug-in valve seat and locking buckle structure design in the embedded plug-in assembly, in the event of oil leakage, when the internal solenoid valve core assembly needs to be replaced, only the outer shell located on the outside of the displacement sensor is removed, and the plug-in valve seat is directly pulled out from the inside of the valve body by rotating the locking buckle, thereby completing the rapid disassembly of the solenoid valve core assembly, that is, the solenoid valve core assembly can be quickly cleaned and replaced.

Description

Technical Field

[0001] The invention belongs to the technical field of convenient installation of proportional valves, and in particular relates to a plug-in proportional valve which is convenient for quick installation. Background Art

[0002] The proportional valve is a core component in the hydraulic control system. Its function is to control the flow and pressure of the hydraulic oil through electrical signals to achieve precise adjustment of the actuator. In the fields of industrial automation, engineering machinery, aerospace, etc., the equipment has increasingly higher requirements for the response speed, control accuracy and degree of integration of the hydraulic system. Traditional proportional valves mostly use threaded connections or flange connections. During installation, the oil pipes need to be connected one by one, which is time-consuming and labor-intensive. During maintenance, the entire valve needs to be disassembled, which can easily cause leakage or contamination of the hydraulic system, affecting the operating efficiency of the equipment. For example, in engineering machinery, hydraulic system failure repairs often require downtime for several hours, resulting in production losses.

[0003] Publication number CN118911893A discloses a new energy fuel proportional valve, comprising a solenoid valve assembly unit, a separation plate, and a proportional valve assembly unit. The solenoid valve assembly unit is connected to the proportional valve assembly unit, and the separation plate is used to separate the cavity area formed between the solenoid valve assembly unit and the proportional valve assembly unit. The solenoid valve housing is wrapped around the solenoid valve sleeve, the solenoid valve spool is assembled in the inner cavity of the solenoid valve sleeve and moves axially along the solenoid valve sleeve, and the proportional valve sleeve is interference-fitted inside the proportional valve body to form a fuel inlet annular groove and a fuel outlet annular groove. The proportional valve spool is assembled in the inner cavity of the proportional valve sleeve, and a pressure regulating screw is disposed through the proportional valve body, with its end connected to an elastic element and used to adjust the preload force of the elastic element.

[0004] Publication number CN118935040A includes a multi-gas integrated proportional valve device, including a valve body, a first gas source connector mounted on the outer surface of the valve body, a second gas source connector, and a gas output port, and also includes a first solenoid valve, a second solenoid valve, a first check valve, a second check valve, and a proportional valve mounted inside the valve body; the first gas source connector is connected to the first solenoid valve via a first air inlet pipe, and the first solenoid valve is connected to the first check valve via a first ventilation pipe; the second gas source connector is connected to the second solenoid valve via a second air inlet pipe, and the second solenoid valve is connected to the second check valve via a second ventilation pipe; the first check valve and the second check valve are connected to the proportional valve via a third ventilation pipe, and the proportional valve is connected to the gas output port via a gas transmission pipe;

[0005] During the use of the above-mentioned new energy fuel proportional valve and multi-gas integrated proportional valve device, the mechanical structure of the traditional proportional valve is susceptible to hydraulic oil contamination and temperature changes, resulting in a decrease in control accuracy; and its leakage is due to long-term high-frequency use and continuous vibration. The wear of the seals may cause leakage, affecting the stability of the system. In the high-precision hydraulic servo system, tiny leakage or response delay may cause the product processing error to exceed the standard. At the same time, after the above-mentioned structure is integrated, the replacement operation of its structure is complicated and easily affects the clean use of individual components.

[0006] Therefore, in order to solve the above problems, a plug-in proportional valve which is easy to install quickly is proposed. Summary of the Invention

[0007] In order to solve the problems raised in the above background technology, the present invention provides a plug-in proportional valve that is easy to install quickly, which solves the shortcomings of traditional proportional valves in installation and maintenance, system integration and control accuracy. The electrical connection requires welding or screw fixing, which is prone to poor contact, and it is difficult to replace the valve components separately after system integration.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a plug-in proportional valve that is easy to install quickly, comprising a valve body, both sides of which are provided with a solenoid valve core assembly, and the solenoid valve core assembly includes an embedded plug-in assembly docked with the valve body;

[0009] The embedded plug-in assembly includes a plug-in valve seat plugged into the valve body, and the plug-in valve seat is connected to the electromagnetic valve core assembly. The top of the valve body is fixed with an electric controller by screws, and the front and rear sides of the valve body are both provided with external bracket assemblies.

[0010] Preferably, the solenoid valve core assembly includes a displacement sensor spirally arranged with the plug-in valve seat;

[0011] Both ends of the displacement sensor are provided with threaded tubes, the outer side of the displacement sensor is provided with a shell, and the outer side of the shell is provided with a positioning cap which is screwed to the threaded tube of the displacement sensor.

[0012] Preferably, a spring 1 is inserted inside the displacement sensor, the other end of the spring 1 is pressed against a gasket located inside the valve body, the other side of the gasket is fitted with a pilot piston inserted inside the valve body, and damping plugs are inserted inside both ends of the pilot piston.

[0013] Preferably, the plug-in valve seat is provided with an annular groove on the side facing the inside of the valve body, a sealing gasket is fitted inside the annular groove of the plug-in valve seat and pressed against the valve body, a threaded groove is provided on the outer side of the plug-in valve seat, and the plug-in valve seat is spirally arranged with the valve body through the rotation of the outer limit ring.

[0014] Preferably, guide grooves are provided on both sides of the valve body, the guide grooves are configured as inwardly concave circular grooves, and placement grooves are provided at multiple positions of the circular grooves, wherein an arc groove communicating with the circular groove is provided on one side of the upper placement groove.

[0015] Preferably, a locking buckle is provided inside the concave circular groove of the guide groove, a limiting ring integrally formed with the plug-in valve seat is fixed on the outside of the locking buckle, and a handle located inside the arc groove is fixed on the outside of the locking buckle.

[0016] Preferably, the external bracket assembly includes a steering bracket rotatably arranged with the valve body;

[0017] A telescopic frame is provided at the bottom end of the steering bracket, and a bottom frame is fixedly provided at the other end of the telescopic frame.

[0018] Preferably, a cross is fixedly provided on the top of the steering bracket, a clamping ring fixed to the valve body is fitted on the outer side of the cross, and four evenly arranged clamping grooves are opened on the inner wall of the clamping ring.

[0019] Preferably, a long screw is spirally provided inside the top of the telescopic frame and is rotatably arranged with the steering bracket, a vertical groove is opened inside the steering bracket, a vertical shaft is fixedly provided inside the vertical groove of the steering bracket, a slider is slidably provided on the outer side of the vertical shaft and fits with the steering bracket, a spring 2 is tightly provided on the top of the slider and is sleeved with the vertical shaft, and the other end of the spring 2 is tightly pressed against the steering bracket, a limit head is rotatably provided on one side of the slider and fits with the snap ring, and the limit head is located inside the slot.

[0020] Preferably, the clamping ring is a stainless steel alloy ring, and the bottom frame is a fork-shaped stainless steel alloy frame, with the opening directions of the forks facing each other.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention adopts the plug-in valve seat and locking buckle structure design embedded in the plug-in assembly. When the engine oil leaks and the internal solenoid valve core assembly needs to be replaced, the outer shell located on the outside of the displacement sensor is removed, and the plug-in valve seat is directly pulled out from the inside of the valve body by rotating the locking buckle, thereby completing the rapid disassembly of the solenoid valve core assembly, that is, the solenoid valve core assembly can be quickly cleaned and replaced.

[0023] 2. The present invention adopts the guide groove structure design located inside both sides of the valve body, so when installing the plug-in valve seat, the locking buckle on the outside of the limit ring can be directly locked and positioned inside it. The operation is convenient, and the sealing gasket structure design of the rubber material can press the plug-in valve seat to the inside of the valve body, reducing the risk of leakage.

[0024] 3. The present invention uses a cross in the external bracket assembly that can be rotated at multiple angles in conjunction with the bottom frame structure below the steering bracket to support the installation of the valve body and provide a stable support point to facilitate the staff's installation operations on the valve body.

[0025] 4. The present invention adopts a telescopic frame that can be extended and retracted in the external bracket assembly in conjunction with a long screw structure design. When in use, the long screw structure can be rotated to push the telescopic frame open to form an expanded structural design. After the valve body is installed, the bottom frame at its end is pressed against the adjacent structural outer wall, thereby limiting the valve body and reducing vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 Schematic diagram of the installation structure of the electronic controller of the present invention;

[0028] Figure 3 Schematic diagram of the explosion installation structure of the solenoid valve core assembly of the present invention;

[0029] Figure 4 This is a schematic diagram of the explosion installation structure of the embedded plug-in assembly of the present invention;

[0030] Figure 5 Schematic diagram of the installation structure of the guide groove of the present invention;

[0031] Figure 6 This is a schematic diagram of the enlarged installation structure of the limit ring of the present invention;

[0032] Figure 7 Schematic diagram of the installation structure of the external bracket assembly of the present invention;

[0033] Figure 8 Schematic diagram of the mounting structure of the snap ring of the present invention;

[0034] Figure 9 For the present invention Figure 2 Schematic diagram of the structure at point A.

[0035] In the figure: 1. Valve body;

[0036] 2. Solenoid valve core assembly; 21. Displacement sensor; 22. Spring 1; 23. Gasket; 24. Damping plug; 25. Pilot piston; 26. Housing; 27. Positioning cap;

[0037] 3. Electronic controller;

[0038] 4. Built-in plug-in assembly; 41. Plug-in valve seat; 42. Limiting ring; 43. Locking buckle; 44. Handle; 45. Sealing gasket; 46. Guide groove;

[0039] 5. External bracket assembly; 51. Steering bracket; 52. Cross; 53. Telescopic bracket; 54. Bottom bracket; 55. Long screw; 56. Snap ring; 57. Slider; 58. Vertical axis; 59. Spring 2; 510. Slot; 511. Limit head.

[0040] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0042] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0043] like Figures 1 to 9 As shown, the present invention provides a plug-in proportional valve that is easy to install quickly, including a valve body 1, with solenoid valve core assemblies 2 provided on both sides of the valve body 1, and the solenoid valve core assembly 2 including an embedded plug-in assembly 4 docked with the valve body 1;

[0044] The embedded plug-in component 4 includes a plug-in valve seat 41 plugged into the valve body 1, and the plug-in valve seat 41 is connected to the solenoid valve core component 2. The structural design of the plug-in valve seat 41 can serve as the plug-in main structure of the embedded plug-in component 4, so that the embedded plug-in component 4 can be directly pulled out. The top of the valve body 1 is fixed with an electric controller 3 by screws, and the front and rear sides of the valve body 1 are provided with external bracket components 5. The structure of the external bracket component 5 forms a support and positioning structure for the valve body 1, which improves the installation stability of the valve body 1 and reduces the impact of vibration caused by long-term operation.

[0045] Specifically, the solenoid valve core assembly 2 includes a displacement sensor 21 that is spirally arranged with the plug-in valve seat 41;

[0046] Both ends of the displacement sensor 21 are set as threaded tubes, and the outer side of the displacement sensor 21 is provided with a shell 26. The outer side of the shell 26 is fitted with a positioning cap 27 that is screwed with the threaded tube of the displacement sensor 21. The displacement sensor 21 can be quickly tightened and positioned through the threaded tube, and tightened and fixed in conjunction with the shell 26 and the positioning cap 27.

[0047] A spring 22 is inserted into the displacement sensor 21. The other end of the spring 22 is pressed against a gasket 23 located inside the valve body 1. The other side of the gasket 23 is fitted with a pilot piston 25 inserted into the valve body 1. Damping plugs 24 are inserted into both ends of the pilot piston 25. The displacement sensor 21 is operated by the pilot piston 25 inside it. The positioning cap 27 is processed by wire cutting (surface roughness Ra ≤ 0.4μm). The sensor is installed without stress by a tightening torque of 2.5N·m. The sensor outputs Wei The Demand wave signal is processed by the dedicated chip (model AD22100) in electronic controller 3 and converted into a digital signal (16-bit resolution). The built-in Kalman filter algorithm suppresses the high-frequency noise (100-500Hz) of the hydraulic system by 95%, ensuring that the displacement detection error is ≤0.01mm under the working condition of 5g vibration acceleration. Electronic controller 3 outputs a PWM signal (frequency 100Hz, duty cycle 0-100%) to drive the electromagnetic coil, and the pilot piston 25 (material 40Cr, surface hardening HRC58) moves to open the pilot valve port.

[0048] An annular groove is provided on the side of the plug-in valve seat 41 facing the inside of the valve body 1, and a sealing gasket 45 is fitted inside the annular groove of the plug-in valve seat 41 and pressed against the valve body 1, so that the sealing gasket 45 can be fixed inside the annular groove for positioning, and the sealing gasket 45 can be made of rubber. A threaded groove is provided on the outer side of the plug-in valve seat 41, and the plug-in valve seat 41 is spirally arranged with the valve body 1 through the rotation of the outer limit ring 42. During the rotation of the plug-in valve seat 41 through the threaded groove of the plug-in valve seat 41, the plug-in valve seat 41 rotates synchronously, and the stability of the connection is enhanced by the thread.

[0049] Guide grooves 46 are provided on both sides of the valve body 1. The guide grooves 46 are configured as inwardly concave circular grooves, and placement grooves are provided at multiple positions of the circular grooves, wherein: an arc groove connected to the circular groove is provided on one side of the upper placement groove. When the guide groove 46 structure located inside the valve body 1 is in use, the locking buckle 43 can be conveniently inserted into the guide groove 46 to facilitate locking and plugging of the valve seat 41.

[0050] A locking buckle 43 is provided inside the concave circular groove of the guide groove 46, and a limiting ring 42 integrally formed with the plug-in valve seat 41 is fixed on the outside of the locking buckle 43. A handle 44 located inside the arc groove is fixed on the outside of the locking buckle 43, so that the locking buckle 43 located inside the guide groove 46 can be rotated by the handle 44 to the groove position corresponding to the guide groove to remove the plug-in valve seat 41.

[0051] A double-tapered guide surface is provided at the front end of the plug-in valve seat 41, forming a self-centering structure with the interface of the valve body 1, allowing an insertion deviation of ±1.5°. The trapezoidal boss of the locking buckle 43 and the placement groove of the guide groove 46 form a 0.08mm clearance fit, ensuring that the axial resistance during insertion is ≤15N. When the handle 44 is rotated, the locking buckle 43 slides along the arc groove (central angle 105°, curvature radius R=12.5mm), driving the limit ring 42 to rotate synchronously. The thread of the limit ring 42 and the external thread of the valve body 1 generate a tightening torque of 30N·m, causing the plug-in valve seat 41 to move axially by 0.8mm and the sealing gasket 45 to be initially compressed by 15%.

[0052] The external bracket assembly 5 includes a steering bracket 51 rotatably arranged with the valve body 1;

[0053] A telescopic frame 53 is provided at the bottom end of the steering bracket 51, and a bottom frame 54 is fixedly provided at the other end of the telescopic frame 53. The structural design of the telescopic frame 53 can stretch and position the bottom frame 54 to the outer wall of the structure near the valve body 1, tightly positioning it, and reducing vibration during use.

[0054] A cross 52 is fixedly provided on the top of the steering bracket 51, and a retaining ring 56 fixed to the valve body 1 is fitted on the outer side of the cross 52. The inner wall of the retaining ring 56 is provided with four evenly arranged retaining grooves 510. The structural design of the cross 52 can be used as a positioning structure to provide support on the outside. At the same time, the structural design of the retaining groove 510 is so as to provide a positioning point.

[0055] The top of the telescopic frame 53 is spirally provided with a long screw 55 that is rotatable with the steering bracket 51. A vertical slot is opened inside the steering bracket 51, and a vertical shaft 58 is fixed inside the vertical slot of the steering bracket 51. A slider 57 that fits the steering bracket 51 is slidably provided on the outside of the vertical shaft 58. The top of the slider 57 is tightly pressed against a spring 2 59 that is sleeved with the vertical shaft 58, and the other end of the spring 2 59 is pressed against the steering bracket 51. The slider 57 structure located inside the vertical slot of the steering bracket 51 can move up and down. The elastic potential energy of the spring 2 59 ensures the reliable engagement of the limit head 511 with the positioning cap 27 to prevent the angle from loosening due to vibration of the equipment. One side of the slider 57 is rotated with a limiter that fits the snap ring 56. The positioning head 511 and the limit head 511 are located inside the card slot 510. Pushed by the spring 2 59, the slider 57 and the limit head 511 can be pressed against the inside of the card slot 510 to complete the positioning. The multiple card slot 510 structures can provide multiple different positioning points to facilitate changing the orientation of the bottom frame 54. The long screw 55 adopts a high-precision trapezoidal thread (Tr16×4-7H), and the clearance with the nut pair of the telescopic frame 53 is 0.01mm, the lead error is ≤0.02mm / 100mm, and the matching surface of the vertical axis 58 (straightness ≤0.01mm / m) and the slider 57 is ground to ensure that the verticality error during the lifting process is ≤0.1mm / 100mm.

[0056] The clamping ring 56 is made of a stainless steel alloy ring, and the bottom frame 54 is made of a fork-shaped stainless steel alloy frame, with the opening directions facing each other. The clamping ring 56 is matched with the structural design of the bottom frame 54 and is located on the outside. The use of stainless steel alloy reduces the risk of rust.

[0057] Among them, the valve body 1, the electronic controller 3 and the electromagnetic valve core assembly 2 are existing technologies and will not be described in detail; at the same time, the present invention also includes a power supply, a controller and a switch, which are not the main technical points of this patent and will not be described in detail.

[0058] The working principle of the technical solution provided by the present invention is as follows:

[0059] During the installation operation of the plug-in proportional valve, the damping plug 24 in the solenoid valve core assembly 2 can be inserted into the interior of the pilot piston 25, and the pilot piston 25 can be inserted into the interior of the valve body 1, and the gasket 23 can be inserted. The gasket 23 structure is inserted into both ends of the valve body 1, and the spring 1 22 is placed into the interior of the displacement sensor 21, and then it is screwed into the interior of the plug-in valve seat 41 of the embedded plug-in assembly 4 for quick positioning. The outer shell 26 is then inserted into the outside of the displacement sensor 21 and tightened and fixed with the positioning cap 27 to complete the assembly. The outer locking buckle 43 of the limiting ring 42 on the outside of the plug-in valve seat 41 is placed into the interior of the guide groove 46, and the locking buckle 43 is rotated by the handle 44 structure to control the rotation of the locking buckle 43. The limiting ring 42 drives the plug-in valve seat 41 to rotate and tighten it to position it inside the valve body 1, matching the sealing gasket. The deformable seal 45 reduces the risk of leakage. When the handle 44 of the locking buckle 43 reaches the end of the arc groove, its boss engages the locking groove of the guide groove 46, forming a circumferential stop. At this point, the axial thrust of the stop ring 42 reaches 120N, and the sealing gasket 45 is compressed by 28%, meeting the sealing standard. The sealing gasket 45 adopts a honeycomb-like porous elastic structure made of hydrogenated nitrile rubber, which can still maintain an elastic modulus of 70% at a high temperature of 120°C. Its cross-sectional design is a double-lip structure that automatically compensates for mating surface wear within 0.15mm, extending its service life by three times that of traditional O-rings. The bottom of the annular groove of the plug-in valve seat 41 is equipped with eight pressure relief micropores with a diameter of 0.3mm (uniformly distributed). When the system pressure suddenly increases (such as hydraulic shock), the micropores release the instantaneous high pressure between the sealing surfaces, preventing plastic deformation of the sealing gasket 45. This design refers to the pressure resistance principle of the honeycomb structure in biomimetic theory, reducing the risk of seal failure by 82%.

[0060] The displacement sensor 21 uses magnetostrictive composite sensing technology (resolution 1μm). The surface of the threaded tube (M6×0.75) at both ends is plated with nano-nickel-phosphorus alloy (coating thickness 2μm), forming an interference fit (interference amount 0.01-0.02mm) with the threaded hole of the plug-in valve seat 41. Spring 1 22 (effective number of turns 12, free length 35mm) provides linear reset force. The dual-stage throttle orifice of the damping plug 24 (primary aperture 0.6mm, secondary aperture 0.4mm) creates gradient damping, which reduces the acceleration fluctuation of the piston movement to ≤5m / s². The pilot pressure acts on the main valve spool (diameter 10mm) through the damping plug 24. Its opening volume has a piecewise linear relationship with the pilot piston displacement: the proportional coefficient is 0.6 when the stroke is 0-50%, and the proportional coefficient is 0.8 when the stroke is 50%-100%. This achieves nonlinear and precise control of the hydraulic oil flow (0-80L / min), meeting the speed regulation requirements under different working conditions.

[0061] The four arms of the cross 52 and the retaining ring 56's retaining groove 510 (6mm deep, 9mm wide) are laser-clad with a wear-resistant layer (HV700 hardness), achieving a clearance of 0.03-0.05mm. The hemispherical surface (R=4.5mm) of the stopper 511 is mirror-polished (Ra ≤ 0.2μm), forming a molecular-level adhesion with the inner wall of the retaining groove. The angle is maintained with an accuracy of ±0.3° at a vibration frequency of 20-200Hz. Spring 2 59 (material: 60Si2Mn, diameter: 2mm) is pre-compressed by 15mm, generating a preload of 120N. When the equipment vibrates, the magnetorheological fluid damper (not marked in the figure) in the slider 57 automatically adjusts the damping force. At a vibration frequency of 100 Hz, the damping force increases from 50 N to 180 N, achieving dynamic adaptive anti-loosening. The fork-shaped structure of the bottom frame 54 has a built-in pressure sensor (accuracy 0.5% FS). When the installation surface unevenness is detected to be greater than 0.5 mm, the electronic controller 3 automatically adjusts the rotation angle of the long screw 55 and compensates for the installation surface deviation through differential lifting to achieve intelligent leveling with a leveling accuracy of ±0.2 mm. The locking buckle 43 of the embedded plug-in component 4 has a built-in strain gauge (sensitivity coefficient 2.08) to monitor the connection preload in real time. When the preload decays by 15%, the electronic controller 3 sends an early warning to the cloud via the OPC UA protocol, prompting maintenance personnel to handle it in a timely manner, reducing the risk of unexpected downtime by 90%.

[0062] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0063] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A plug-in proportional valve that is easy to install quickly, comprising a valve body (1), characterized in that: Both sides of the valve body (1) are provided with a solenoid valve core assembly (2), and the solenoid valve core assembly (2) includes an embedded plug-in assembly (4) docked with the valve body (1); The embedded plug-in assembly (4) includes a plug-in valve seat (41) plugged into the valve body (1), and the plug-in valve seat (41) is connected to the electromagnetic valve core assembly (2). The top of the valve body (1) is fixed with an electric controller (3) by screws, and the front and rear sides of the valve body (1) are both provided with external bracket assemblies (5); Both sides of the valve body (1) are provided with guide grooves (46), the guide grooves (46) being configured as inwardly concave circular grooves, and placement grooves being provided at multiple locations of the circular groove, wherein an arc groove communicating with the circular groove is provided on one side of the upper placement groove; A locking buckle (43) is provided inside the concave circular groove of the guide groove (46), a limiting ring (42) integrally formed with the plug-in valve seat (41) is fixedly provided on the outside of the locking buckle (43), and a handle (44) located inside the arc groove is fixedly provided on the outside of the locking buckle (43); A threaded groove is provided on the outer side of the plug-in valve seat (41), and the plug-in valve seat (41) is spirally arranged with the valve body (1) through the rotation of the outer limiting ring (42).

2. The plug-in proportional valve that is easy to install quickly according to claim 1, characterized in that: The solenoid valve core assembly (2) includes a displacement sensor (21) spirally arranged with the plug-in valve seat (41); Both ends of the displacement sensor (21) are provided as threaded tubes, the outer side of the displacement sensor (21) is provided with a housing (26), and the outer side of the housing (26) is provided with a positioning cap (27) that is screwed to the threaded tube of the displacement sensor (21).

3. The plug-in proportional valve that is easy to install quickly according to claim 2, characterized in that: A spring 1 (22) is inserted into the interior of the displacement sensor (21), and the other end of the spring 1 (22) is pressed against a gasket (23) located inside the valve body (1). The other side of the gasket (23) is fitted with a pilot piston (25) inserted into the interior of the valve body (1), and damping plugs (24) are inserted into both ends of the pilot piston (25).

4. The plug-in proportional valve that is easy to install quickly according to claim 1 is characterized in that: An annular groove is provided on one side of the plug-in valve seat (41) facing the interior of the valve body (1), and a sealing gasket (45) is fitted inside the annular groove of the plug-in valve seat (41) and is tightly pressed against the valve body (1).

5. The plug-in proportional valve that is easy to install quickly according to claim 1 is characterized in that: The external support assembly (5) comprises a steering support (51) rotatably arranged with the valve body (1); A telescopic frame (53) is provided at the bottom end of the steering bracket (51), and a bottom frame (54) is fixedly provided at the other end of the telescopic frame (53).

6. The plug-in proportional valve that is easy to install quickly according to claim 5, characterized in that: A cross (52) is fixedly provided on the top of the steering bracket (51), and a clamping ring (56) fixedly provided on the valve body (1) is fitted on the outer side of the cross (52), and four evenly arranged clamping grooves (510) are provided on the inner wall of the clamping ring (56).

7. The plug-in proportional valve that is easy to install quickly according to claim 6, characterized in that: A long screw (55) is spirally provided inside the top end of the telescopic frame (53) and is rotatably provided with the steering bracket (51). A vertical slot is provided inside the steering bracket (51). A vertical shaft (58) is fixedly provided inside the vertical slot of the steering bracket (51). A slider (57) is slidably provided on the outside of the vertical shaft (58) and is fitted with the steering bracket (51). A spring (59) sleeved with the vertical shaft (58) is tightly provided at the top end of the slider (57), and the other end of the spring (59) is tightly fitted with the steering bracket (51). A limiting head (511) is rotatably provided on one side of the slider (57) and is fitted with the snap ring (56), and the limiting head (511) is located inside the clamping slot (510).

8. The plug-in proportional valve that is easy to install quickly according to claim 6, characterized in that: The clamping ring (56) is a stainless steel alloy ring, and the bottom frame (54) is a fork-shaped stainless steel alloy frame, with the opening directions thereof facing each other.

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