Flow electromagnetic proportional valve with filtering function

Abstract

The utility model discloses a flow electromagnetic proportional valve with a filtering function, which comprises a liquid passing pipe, an electromagnetic proportional valve, an electromagnetic proportional valve and an electromagnetic proportional valve, and is characterized in that the liquid passing pipe is provided with a liquid inlet and a liquid outlet; the valve body assembly is matched with the liquid passing pipe; the coil assembly is matched with the valve body assembly; the filtering assembly is arranged on the liquid passing pipe; the fixed sleeve is obliquely arranged on the outer wall of the liquid passing pipe, the first bolt is connected into the fixed sleeve in a threaded mode, the filter cartridge is detachably arranged on the first bolt, the limiting protrusion is arranged on the inner wall of the liquid passing pipe, the limiting protrusion is provided with a clamping groove matched with the filter cartridge, and the end of the filter cartridge can be attached to the clamping groove. The liquid passing pipe is provided with an inlet communicated with the fixed sleeve, and the filter cartridge is uniformly provided with a plurality of filter holes.

Description

Technical Field

[0001] This utility model belongs to the field of proportional valve technology, and in particular relates to a flow electromagnetic proportional valve with built-in filter. Background Technology

[0002] A proportional valve is a new type of hydraulic control device. It replaces the original control components in ordinary pressure valves, flow valves, and directional valves with a proportional electromagnet, allowing for continuous and proportional remote control of oil pressure, flow rate, or direction based on input electrical signals. Existing proportional valves generally consist of a coil, a fixed iron core, a compression spring, a moving iron core, and a valve body. Its working principle is as follows: when the coil is not energized, the sealing head of the fixed iron core, under the back pressure of the compression spring and the medium at the valve inlet, keeps the valve closed. When the coil is energized, the end face of the fixed iron core generates an electromagnetic force that overcomes the reaction force of the compression spring and the back pressure of the medium at the valve inlet, causing the moving iron core to move towards the fixed iron core until the end face of the moving iron core is attracted to the end face of the fixed iron core, at which point the valve is in the open state.

[0003] Patent CN202220045341.0 discloses a proportional valve that is easy to adjust the opening degree, including a valve body, a first sealing gasket, an upper valve cover, a valve core, a protective shell, and a transparent isolation cover. The valve body has a first sealing gasket in the middle of its top, an upper valve cover on top of the first sealing gasket, a transparent isolation cover on top of the upper valve cover, a protective shell in the middle of the top of the upper valve cover, and a valve core for adjusting the water flow is slidably installed inside the protective shell.

[0004] In the aforementioned patent, the filter screen is placed inside the tube, which makes subsequent maintenance and replacement of the filter screen very inconvenient. Utility Model Content

[0005] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0006] To address the technical problems mentioned in the background section, some embodiments of this application provide a flow electromagnetic proportional valve with integrated filtering, comprising:

[0007] The liquid passage pipe is equipped with an inlet and an outlet.

[0008] Valve body assembly, which mates with the liquid inlet pipe;

[0009] The coil assembly mates with the valve body assembly;

[0010] The filter assembly is located on the liquid flow pipe;

[0011] The filter assembly includes a fixed sleeve inclined on the outer wall of the liquid passage pipe, a first bolt screwed into the fixed sleeve, a filter cylinder detachably mounted on the first bolt, and a limiting protrusion on the inner wall of the liquid passage pipe. The limiting protrusion has a groove that mates with the filter cylinder, and the end of the filter cylinder can fit into the groove. The liquid passage pipe has an inlet that communicates with the fixed sleeve, and the filter cylinder has multiple filter holes evenly distributed.

[0012] Preferably, the end of the first bolt is provided with an installation groove, the end of the filter cylinder is provided with an elastic ring plate, the elastic ring plate is provided with an insertion groove that mates with the filter cylinder, and the elastic ring plate is in contact with the inner wall of the installation groove.

[0013] Preferably, a filter screen is provided on the inner wall of the filter cylinder.

[0014] Preferably, a temperature sensor is provided on the first bolt, with one end of it extending into the liquid-passing tube.

[0015] Preferably, the valve body assembly includes a valve body disposed on the liquid passage pipe, a valve cover disposed on the valve body, a valve nozzle component disposed in the valve body, a stationary iron core component disposed on the valve cover, a moving iron core component cooperating with the stationary iron core component, a pressure regulating spring and a closing spring sleeved on the moving iron core component.

[0016] Preferably, the outer wall of the first bolt is provided with a groove, and an elastic sealing ring is provided in the groove. The fixing sleeve is provided with a sealing groove that cooperates with the elastic sealing ring.

[0017] Preferably, a limiting plate is provided at the end of the first bolt.

[0018] Preferably, the outer wall of the liquid-conducting pipe is provided with a mounting plate, and the mounting plate is provided with mounting holes.

[0019] Preferably, one end of the pressure regulating spring is located on the valve cover, and the other end is located on the valve nozzle component.

[0020] Preferably, one end of the closing spring is located on the stationary iron core component, and the other end is located on the moving iron core component.

[0021] This application provides a flow electromagnetic proportional valve with built-in filter that facilitates filter element replacement. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0023] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0024] In the attached diagram:

[0025] Figure 1 This is a schematic diagram of the structure of this utility model.

[0026] Figure 2 This is a cross-sectional view of the present invention.

[0027] Figure 3 for Figure 2 A magnified view of point A.

[0028] Figure 4 This is a schematic diagram of the internal structure of this utility model.

[0029] Reference numerals: 1. Liquid inlet pipe; 2. Valve body assembly; 3. Coil assembly; 4. Filter assembly; 41. Fixing sleeve; 411. Sealing groove; 42. First bolt; 43. Filter cylinder; 44. Limiting protrusion; 441. Slot; 421. Mounting groove; 422. Groove; 423. Elastic sealing ring; 45. Elastic ring plate; 451. Insertion groove; 21. Valve body; 22. Valve cover; 23. Valve nozzle assembly; 24. Static iron core assembly; 25. Moving iron core assembly; 26. Pressure regulating spring; 27. Closing spring; 231. Fixing seat; 232. First tube body; 234. Second tube body; 235. Sealing plate; 236. Elastic plate; 46. Filter screen; 5. Temperature sensor; 6. Mounting plate; 61. Mounting hole. Detailed Implementation

[0030] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0031] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0032] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0033] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0034] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] like Figure 1-4 As shown, a flow electromagnetic proportional valve with built-in filter includes a liquid passage pipe 1, a valve body assembly 2, a coil assembly 3, and a filter assembly 4. The liquid passage pipe 1 has an inlet 11 at one end and an outlet 12 at the other end. The valve body assembly 2 is mounted on the liquid passage pipe 1 and is used to control the flow rate of the liquid in the liquid passage pipe 1. The coil assembly 3 is mounted on the valve body assembly 2 and is used to drive the valve body assembly 2. The filter assembly 4 is used to filter impurities in the liquid.

[0036] Specifically, the filter assembly 4 includes a fixing sleeve 41, a first bolt 42, a filter cylinder 43, and a limiting protrusion 44. The fixing sleeve 41 is obliquely fixed to the outer wall of the liquid-conducting pipe 1, and the liquid-conducting pipe 1 has an inlet communicating with the fixing sleeve 41. The first bolt 42 is screwed into the fixing sleeve 41. The filter cylinder 43 has evenly spaced filter holes, which are detachably connected to the first bolt 42. The limiting protrusion 44 is fixed to the inner wall of the liquid-conducting pipe 1, and the limiting protrusion 44 has a groove 441 that mates with the filter cylinder 43. The end of the filter cylinder 43 can fit into the groove 441, allowing liquid to enter from the inlet. The incoming liquid flows into the filter cartridge 43. After being filtered by the filter cartridge 43, the liquid flows out through the filter holes, thus completing the filtration of impurities in the liquid. The impurities are concentrated inside the filter cartridge 43 for easy subsequent processing. When it is necessary to replace or clean the filter cartridge 43, simply turn the first bolt 42 to remove the filter cartridge 43. The filter assembly 4 is obliquely fixed to the outer wall of the liquid passage pipe 1 by the fixing sleeve 41. The first bolt 42 is screwed into the fixing sleeve 41. The filter cartridge 43 is detachably connected to the first bolt 42 and fits into the limiting protrusion 44 and the slot 441 on the inner wall of the liquid passage pipe 1. The liquid enters the filter cartridge 43 from the inlet and is filtered through the evenly distributed filter holes, with impurities remaining inside the filter cartridge 43. When it is necessary to replace, the filter cartridge 43 can be removed by turning the first bolt 42. The split design, with the filter cartridge 43 and the liquid passage pipe 1 limited by the slot 441 and the obliquely installed fixing sleeve 41, significantly simplifies the disassembly process of the filter assembly 4, facilitating maintenance and replacement, while ensuring stable filtration effect.

[0037] As a preferred embodiment, the first bolt 42 has an installation groove 421 at its end, and the filter cylinder 43 has an elastic ring plate 45 at its end. The elastic ring plate 45 has an insertion groove 451 that mates with the filter cylinder 43, and the elastic ring plate 45 fits against the inner wall of the installation groove 421.

[0038] Specifically, the valve body assembly 2 includes a valve body 21, a valve cover 22, a valve nozzle assembly 23, a stationary iron core assembly 24, a moving iron core assembly 25, a pressure regulating spring 26, and a closing spring 27. The valve body 21 is fixed on the liquid passage pipe 1. The valve nozzle assembly 23 is located inside the valve body 21 and includes a fixing seat 231 on the valve body 21, a first pipe 232 connected to the fixing seat 231, a second pipe 234 on the inner wall of the liquid passage pipe 1, a sealing plate 235 that cooperates with the first pipe 232, and an elastic plate 236 connected to the sealing plate 235. The first pipe 232 and the second pipe 234 are connected to the first pipe 232. The ends of the two tubes 234 abut each other, and the side wall of the second tube 234 is provided with a liquid outlet; the stationary iron core component 24 is provided on the valve cover 22; the valve cover 22 is provided on the valve body 21; the moving iron core component 25 is inserted into the coil assembly 3 and cooperates with the stationary iron core component 24, and the end of the moving iron core contacts the sealing plate 235; the pressure regulating spring 26 and the closing spring 27 are both sleeved on the moving iron core component 25, and one end of the pressure regulating spring 26 is provided on the valve cover 22 and the other end is provided on the valve nozzle component 23, and one end of the closing spring is provided on the stationary iron core component 24 and the other end is provided on the moving iron core component 25.

[0039] In other embodiments, a filter screen 46 is provided on the inner wall of the filter cylinder 43. The filter screen 46, which is added to the inner wall of the filter cylinder 43, forms a double-layer filtration structure in conjunction with the filter holes. The filter screen 46 can intercept finer impurities and improve filtration accuracy. The double-layer structure disperses the filtration load, reduces the risk of clogging of a single filter layer, and extends the cleaning cycle.

[0040] In other embodiments, a temperature sensor 5 is provided on the first bolt 42, one end of which extends into the liquid pipe 1. The temperature sensor 5 is integrated on the first bolt 42, and its probe extends into the liquid pipe 1 to monitor the liquid temperature in real time. The temperature data can be fed back to the control system to realize overheat protection or dynamic flow regulation, avoid damage to the valve body assembly 2 due to abnormal temperature, and improve the system safety and intelligence level.

[0041] In other embodiments, the outer wall of the first bolt 42 is provided with a groove 422, and an elastic sealing ring 423 is provided in the groove 422. The fixing sleeve 41 is provided with a sealing groove 411 that cooperates with the elastic sealing ring 423.

[0042] In other embodiments, a limiting plate 424 is provided at the end of the first bolt 42. The limiting plate can abut against the end of the fixing sleeve 41 to prevent the filter cylinder 43 from being misaligned with the limiting protrusion 44 and the slot 441 due to excessive screwing, thus ensuring installation accuracy and reducing the risk of operational errors.

[0043] In other embodiments, the outer wall of the liquid passage pipe 1 is provided with a mounting plate 6, and the mounting plate 6 is provided with mounting holes 61. The proportional valve can be quickly fixed to the equipment or pipeline support through the mounting holes 61, which improves the ease of installation and enhances the overall structural stability.

[0044] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A flow electromagnetic proportional valve with filtering, comprising: a through liquid pipe provided with an inlet and an outlet; a valve body assembly cooperating with the through liquid pipe; a coil assembly cooperating with the valve body assembly; a filtering assembly provided on the through liquid pipe; characterized in that the filtering assembly comprises a fixed sleeve obliquely provided on the outer wall of the through liquid pipe, a first bolt screwed in the fixed sleeve, a filter cartridge detachably provided on the first bolt, and a limiting protrusion provided on the inner wall of the through liquid pipe, the limiting protrusion being provided with a clamping groove cooperating with the filter cartridge, the end of the filter cartridge being capable of being attached to the clamping groove, the through liquid pipe being provided with an inlet communicating with the fixed sleeve, and the filter cartridge being uniformly provided with a plurality of filter holes.

2. The flow electromagnetic proportional valve with self-filtering according to claim 1, characterized in that: The end of the first bolt is provided with a mounting groove, the end of the filter cartridge is provided with an elastic ring plate, the elastic ring plate is provided with a plug-in groove cooperating with the filter cartridge, and the elastic ring plate is attached to the inner wall of the mounting groove.

3. The flow electromagnetic proportional valve with self-filtering according to claim 1, characterized in that: The inner wall of the filter cartridge is provided with a filter screen.

4. The flow electromagnetic proportional valve with self-filtering according to claim 1, characterized in that: The first bolt is provided with a temperature sensor, one end of which extends into the through liquid pipe.

5. The flow electromagnetic proportional valve with self-filtering according to claim 1, characterized in that: The valve body assembly comprises a valve body provided on the through liquid pipe, a valve cover provided on the valve body, a valve nozzle component provided in the valve body, a static iron core component provided on the valve cover, a dynamic iron core component cooperating with the static iron core component, a pressure regulating spring sleeved outside the dynamic iron core component, and a closing spring.

6. The flow electromagnetic proportional valve with self-filtering according to claim 1, characterized in that: The outer wall of the first bolt is provided with a groove, the groove is provided with an elastic sealing ring, and the fixed sleeve is provided with a sealing groove cooperating with the elastic sealing ring.

7. The flow electromagnetic proportional valve with self-filtering according to claim 1, characterized in that: The end of the first bolt is provided with a limiting plate.

8. The flow electromagnetic proportional valve with self-filtering according to claim 1, characterized in that: The outer wall of the through liquid pipe is provided with a mounting plate, and the mounting plate is provided with a mounting hole.

9. The flow electromagnetic proportional valve with self-filtering according to claim 5, characterized in that: One end of the pressure regulating spring is arranged on the valve cover, and the other end is arranged on the valve nozzle component.

10. The flow electromagnetic proportional valve with self-filtering according to claim 5, characterized in that: One end of the closing spring is arranged on the static iron core component, and the other end is arranged on the dynamic iron core component.

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