Plug-in proportional control throttle valve

Abstract

This utility model discloses a cartridge-type proportional control throttle valve, including a housing, a valve body fixedly connected to the housing, an electromagnetic drive unit disposed within the housing for driving the opening and closing of the throttle valve, and a valve core disposed within the valve body for controlling the opening or closing of the throttle valve. The electromagnetic drive unit drives the valve core to open and close; when power is off, the valve body is a one-way valve. When the electromagnetic drive unit is working, it linearly controls the valve core displacement based on the input current to adjust the opening degree of the valve core. The electromagnetic drive unit includes a drive assembly disposed within the housing for driving the electromagnetic drive unit. This utility model, by incorporating an electromagnetic drive unit, solves the problems of large leakage, limited functionality, insufficient reliability, and slow response found in existing throttle valves.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic control technology, and in particular relates to a cartridge-type proportional control throttle valve. Background Technology

[0002] With the continuous development of industrial automation and precision control technology, throttle valves, as an important flow control device, are widely used in hydraulic, pneumatic and other fluid systems. They control the flow rate of fluid by adjusting the valve opening, thereby achieving precise regulation of system pressure and flow. Therefore, the performance of throttle valves has a crucial impact on the stability and accuracy of the entire fluid control system.

[0003] However, existing throttle valves have problems such as large leakage, limited functionality, insufficient reliability and slow response when in use. Ordinary seat valve structures do not seal well under high pressure conditions, resulting in leakage of >3mL / min@21MPa. Utility Model Content

[0004] The purpose of this utility model is to provide a cartridge-type proportional control throttle valve. By setting an electromagnetic drive unit, it solves the problems of large leakage, single function, insufficient reliability and slow response of existing throttle valves during use. The problem of leakage >3mL / min@21MPa caused by poor sealing of ordinary seat valve structure under high pressure conditions.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a cartridge-type proportional control throttle valve, comprising a housing and a valve body fixedly connected to the housing, and further comprising: an electromagnetic drive unit disposed within the housing for driving the opening and closing of the throttle valve; and a valve core disposed within the valve body for controlling the opening or closing of the throttle valve; wherein, the electromagnetic drive unit drives the valve core to open and close, the valve body is a one-way valve when power is off, and the electromagnetic drive unit linearly controls the valve core displacement based on the input current to adjust the opening degree of the valve core when working.

[0007] Furthermore, the electromagnetic drive unit includes a drive assembly disposed within the housing for driving the electromagnetic drive unit; and a reset assembly disposed within the valve body for resetting the electromagnetic drive unit; wherein the reset assembly will cause the electromagnetic drive unit to reset after power is cut off.

[0008] Furthermore, the valve core includes a valve sleeve located at the bottom of the valve body, a valve core assembly is disposed within the valve body, an elastic compensation element is disposed within the valve body, and an oil outlet is provided on the valve body and the valve sleeve; wherein, the outer wall of the elastic compensation element contacts the inner wall of the valve body, and the valve core assembly is fixedly connected to the electromagnetic drive unit through the elastic compensation element, that is, the valve stem of the valve core assembly is fixedly connected to the elastic compensation element.

[0009] Furthermore, the drive assembly includes a coil disposed between the housing and the valve body, and a wet armature is slidably connected inside the valve body; wherein, when the coil is energized, it drives the wet armature to slide up and down, and the wet armature is directly immersed in the oil during use.

[0010] Furthermore, the reset assembly includes a connecting block fixedly connected to the inner wall of the top of the valve body, a fixing ring fixedly connected to the inner wall of the valve body, a sliding ring slidably connected to the inner wall of the valve body, and a reset component disposed within the valve body; wherein, the inner wall of the fixing ring is slidably connected to the wet armature, and the inner wall of the sliding ring is slidably connected to the wet armature.

[0011] Furthermore, the reset component includes a spring telescopic rod fixedly connected between the connecting block and the wet armature, and a reset spring is sleeved on the outer wall of the wet armature; wherein, the top of the reset spring is fixedly connected to the fixed ring, the bottom of the reset spring is fixedly connected to the slip ring, and both the spring telescopic rod and the reset spring are used to reset the electromagnetic drive part and the valve core part.

[0012] Furthermore, the valve sleeve has a first oil port, the valve body has a second oil port, and the valve core assembly has a pressure balance channel; wherein, when the power is off, it acts as a one-way valve, allowing oil to flow unidirectionally from the first oil port to the second oil port and cutting off reverse flow; when the power is on, the electromagnetic drive unit linearly controls the valve core displacement based on the input current to adjust the channel opening from the second oil port to the first oil port.

[0013] This utility model has the following beneficial effects:

[0014] 1. By setting up an electromagnetic drive unit, when the power is off, the device acts as a one-way valve, allowing oil to flow unidirectionally from the first port to the second port and cutting off reverse flow. When the power is on, the clamping unit linearly controls the valve core displacement based on the input current to adjust the channel opening from the second port to the first port. The clamping unit adopts integrated wet armature drive technology, in which the wet armature is directly immersed in the oil and hydraulic pressure compensation is achieved through a pressure balance channel. The valve core assembly adopts a conical sealing structure, and the valve sleeve and elastic compensation element are equipped with multi-level sealing layers. The spring telescopic rod and return spring have a pre-tightening force design, which avoids problems such as large leakage, single function, insufficient reliability and slow response of the throttle valve during use. At the same time, it can not only realize unidirectional conduction or on / off control, but also perform flow ratio adjustment.

[0015] 2. By setting up an elastic compensation element, the elastic compensation element adaptively fills the wear gap of the sealing surface during use. Specifically, when the valve core and valve sleeve form a leakage gap Δh due to long-term opening and closing friction or erosion by impurities, the elastic element releases its compression due to the gap and deforms Δδ'=Δh in the direction of the gap through its own elastic restoring force and hydraulic pressure to fill the wear gap. After deformation, the elastic element returns to its initial compression state, and the contact pressure of the sealing surface rises back to the level of "pre-tightening force + hydraulic pressure", ensuring that the leakage is stable at <0.05mL / min. The elastic element can be made of rubber or metal bellows, without the need for external power or complex sensing devices. It achieves self-maintaining sealing performance only through mechanical elasticity, reducing the need for frequent replacement of traditional rigid seals, thereby reducing the maintenance cost of industrial equipment.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the front sectional structure of the present invention;

[0019] Figure 2 This is a partial cross-sectional view of the electromagnetic drive section of this utility model.

[0020] Figure 3 This utility model Figure 2 A magnified structural diagram of A in the middle;

[0021] Figure 4 This is a partial cross-sectional view of the valve core of this utility model;

[0022] Figure 5 This is a schematic diagram of the overall structure of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 111. Outer shell; 112. Valve body; 2. Electromagnetic drive unit; 21. Drive assembly; 211. Coil; 212. Wet armature; 22. Reset assembly; 221. Connecting block; 222. Retaining ring; 223. Slip ring; 224. Spring telescopic rod; 225. Reset spring; 3. Valve core; 311. Valve sleeve; 312. Valve core assembly; 313. Elastic compensation element; 314. First oil port; 315. Second oil port; 316. Pressure balance channel. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5As shown, this utility model is a cartridge-type proportional control throttle valve, including a housing 111 and a valve body 112 fixedly connected to the housing 111. It also includes: an electromagnetic drive unit 2, disposed within the housing 111, for driving the opening and closing of the throttle valve; and a valve core 3, disposed within the valve body 112, for controlling the opening or closing of the throttle valve. The electromagnetic drive unit 2 drives the valve core 3 to open and close. When power is off, the valve body 112 is a one-way valve. When the electromagnetic drive unit 2 is working, it linearly controls the valve core displacement based on the input current. To adjust the opening degree of the valve core 3, the electromagnetic drive unit 2 includes a drive assembly 21 disposed within the housing 111 for driving the electromagnetic drive unit 2; and a reset assembly 22 disposed within the valve body 112 for resetting the electromagnetic drive unit 2. The reset assembly 22 resets the electromagnetic drive unit 2 after power is cut off. The drive assembly 21 includes a coil 211 disposed between the housing 111 and the valve body 112, and a wet armature 212 is slidably connected within the valve body 112. The coil 211 is energized to... The wet armature 212 slides up and down. The reset assembly 22 includes a connecting block 221 fixedly connected to the inner wall of the top of the valve body 112. A fixing ring 222 is fixedly connected to the inner wall of the valve body 112, and a sliding ring 223 is slidably connected to the inner wall of the valve body 112. A reset component is provided inside the valve body 112. The inner wall of the fixing ring 222 is slidably connected to the wet armature 212, and the inner wall of the sliding ring 223 is slidably connected to the wet armature 212. The reset component includes a spring telescopic rod 2 fixedly connected between the connecting block 221 and the wet armature 212. 24. A return spring 225 is sleeved on the outer wall of the wet armature 212; wherein, the top of the return spring 225 is fixedly connected to the fixed ring 222, and the bottom of the return spring 225 is fixedly connected to the slip ring 223. The spring telescopic rod 224 and the return spring 225 are both used to reset the electromagnetic drive part 2 and the valve core part 3. By setting the electromagnetic drive part 2, the problems of large leakage, single function, insufficient reliability and slow response of the throttle valve during use are avoided. At the same time, it can not only realize unidirectional conduction or on / off control, but also perform flow ratio adjustment.

[0027] The valve core portion 3 includes a valve sleeve 311 located at the bottom of the valve body 112. A valve core assembly 312 and an elastic compensation element 313 are disposed within the valve body 112. Oil outlets are provided on both the valve body 112 and the valve sleeve 311. The outer wall of the elastic compensation element 313 contacts the inner wall of the valve body 112. The valve core assembly 312 is fixedly connected to the electromagnetic drive portion 2 via the elastic compensation element 313, meaning the valve stem of the valve core assembly 312 is fixedly connected to the elastic compensation element 313. A first oil port 314 is provided on the valve sleeve 311, and a second oil port 314 is provided on the valve body 112. 15. A pressure balance channel 316 is provided on the valve core assembly 312. When the power is off, it acts as a one-way valve, allowing oil to flow unidirectionally from the first oil port 314 to the second oil port 315 and cutting off reverse flow. When the power is on, the electromagnetic drive unit 2 linearly controls the valve core displacement based on the input current to adjust the channel opening from the second oil port 315 to the first oil port 314. By setting an elastic compensation element 313, no external power or complex sensing device is required. The sealing performance is maintained by mechanical elasticity alone, reducing the need for frequent replacement of traditional rigid seals and thus reducing the maintenance cost of industrial equipment.

[0028] One specific application of this embodiment is as follows: In use, when power is off, it acts as a one-way valve, allowing oil to flow unidirectionally from the first port 314 to the second port 315 and cutting off reverse flow. When power is on, the electromagnetic drive unit 2 linearly controls the valve core displacement based on the input current to adjust the channel opening from the second port 315 to the first port 314. The electromagnetic drive unit 2 employs integrated wet armature 212 drive technology, where the wet armature 212 is directly immersed in the oil and hydraulic pressure compensation is achieved through the pressure balance channel 316. The valve core assembly 312 adopts a conical sealing structure. Both the valve sleeve 311 and the elastic compensation element 313 are provided with multi-level sealing layers. The spring telescopic rod 224 and the return spring 225 have a preload design. The electric spring telescopic rod 224 and the return spring 225 provide power for the closure of the valve core 3. The elastic compensation mechanism of the elastic compensation element 313 is a process of adaptively filling the wear gap of the sealing surface through the elastic element. Specifically, when the valve core and valve sleeve 311 are subjected to long-term opening and closing friction or are eroded by impurities, a leakage gap Δh is formed. The elastic element releases the compression due to the gap and is driven by its own elastic restoring force and hydraulic pressure to deform Δδ'=Δh in the direction of the gap to fill the wear gap. After deformation, the elastic element returns to the initial compression state, and the contact pressure of the sealing surface rises back to the level of "pre-tightening force + hydraulic pressure" to ensure that the leakage is stable at <0.05mL / min. The elastic element can be made of rubber or metal bellows.

[0029] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A cartridge-type proportional control throttle valve, comprising a housing (111) and a valve body (112) fixedly connected to the housing (111), characterized in that, Also includes: An electromagnetic drive unit (2) is disposed inside the housing (111) and is used to drive the throttle valve to open and close. as well as Valve core (3), which is disposed inside the valve body (112) and is used to control the throttle valve to open or close; Among them, the electromagnetic drive unit (2) drives the valve core unit (3) to open and close. When the power is off, the valve body (112) is a one-way valve. When the electromagnetic drive unit (2) is working, it linearly controls the valve core displacement based on the input current to adjust the opening degree of the valve core unit (3).

2. The cartridge-type proportional control throttle valve according to claim 1, characterized in that, The electromagnetic drive unit (2) includes a drive assembly (21) disposed within the housing (111) for driving the electromagnetic drive unit (2); and Reset assembly (22), which is disposed inside the valve body (112) and is used to reset the electromagnetic drive unit (2). Among them, the reset component (22) will drive the electromagnetic drive unit (2) to reset after power failure.

3. A cartridge-type proportional control throttle valve according to claim 2, characterized in that, The valve core (3) includes a valve sleeve (311) opened at the bottom of the valve body (112), a valve core assembly (312) is provided inside the valve body (112), an elastic compensation element (313) is provided inside the valve body (112), and an oil outlet is provided on the valve body (112) and the valve sleeve (311). Among them, the outer wall of the elastic compensation element (313) is in contact with the inner wall of the valve body (112), and the valve core assembly (312) is fixedly connected to the electromagnetic drive unit (2) through the elastic compensation element (313), that is, the valve stem of the valve core assembly (312) is fixedly connected to the elastic compensation element (313).

4. A cartridge-type proportional control throttle valve according to claim 3, characterized in that, The drive assembly (21) includes a coil (211) disposed between the housing (111) and the valve body (112), and a wet armature (212) is slidably connected inside the valve body (112). The coil (211) is energized, which drives the wet armature (212) to slide up and down.

5. A cartridge-type proportional control throttle valve according to claim 4, characterized in that, The reset assembly (22) includes a connecting block (221) fixedly connected to the inner wall of the top of the valve body (112), a fixing ring (222) fixedly connected to the inner wall of the valve body (112), a sliding ring (223) slidably connected to the inner wall of the valve body (112), and a reset component provided inside the valve body (112). The inner wall of the fixed ring (222) is slidably connected to the wet armature (212), and the inner wall of the slip ring (223) is slidably connected to the wet armature (212).

6. A cartridge-type proportional control throttle valve according to claim 5, characterized in that, The reset component includes a spring telescopic rod (224) fixedly connected between the connecting block (221) and the wet armature (212), and a reset spring (225) is sleeved on the outer wall of the wet armature (212). The top of the reset spring (225) is fixedly connected to the fixed ring (222), the bottom of the reset spring (225) is fixedly connected to the slip ring (223), and the spring telescopic rod (224) and the reset spring (225) are both used to reset the electromagnetic drive part (2) and the valve core part (3).

7. A cartridge-type proportional control throttle valve according to claim 6, characterized in that, The valve sleeve (311) has a first oil port (314), the valve body (112) has a second oil port (315), and the valve core assembly (312) has a pressure balance channel (316). When the power is off, it acts as a one-way valve, allowing the oil to flow unidirectionally from the first oil port (314) to the second oil port (315) and cutting off the reverse flow. When the power is on, the electromagnetic drive unit (2) linearly controls the valve core displacement based on the input current to adjust the channel opening from the second oil port (315) to the first oil port (314).

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