Proportional valve

Abstract

The utility model relates to a proportional valve which comprises a first shell and a second shell which are connected with each other, a driving assembly is arranged in the first shell, a power assembly is arranged on the second shell, the power assembly comprises a valve element, one end of the valve element is provided with a clamping part, and the clamping part is connected with the first shell. The position, close to the clamping part, of the valve element is further provided with an inclined face relative to the first direction. The inclined surface is arranged on the surface of the valve core, and the driving component is combined, so that the valve core can influence the flow of gas in a progressive and linear manner when moving, the precise control of the gas flow is realized, the sudden change of the gas flow is reduced, the stability of a system is improved, and the service life of the system is prolonged. And the linearity and the accuracy of flow control are obviously improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic and hydraulic transmission technical field especially relates to a proportional valve. BACKGROUND

[0002] As an important fluid control element, proportional valves have a wide range of applications in industrial automation. Traditional proportional valve designs often focus on achieving basic flow control functions by adjusting the opening of the valve core to change the flow of fluid. However, with the continuous progress of industrial technology and the increasing degree of automation, the performance requirements of proportional valves are also becoming higher and higher. Especially in scenarios that require precise control of fluid flow, pressure, and response speed, traditional proportional valve designs have been difficult to meet the needs, and there are the following shortcomings in actual use:

[0003] (1) Insufficient flow control precision: The traditional proportional valve drive method may be limited by the complexity and manufacturing precision of the mechanical structure, making it difficult to achieve high-precision adjustment in flow control, often with significant errors.

[0004] (2) Poor sealing performance: Traditional proportional valves often have deficiencies in sealing performance, which can easily lead to leakage problems. This not only wastes fluid resources, but also can cause pollution and damage to the system. SUMMARY

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a proportional valve to solve one or more problems in the prior art.

[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0007] A proportional valve, the proportional valve includes a first housing and a second housing connected to each other, a drive assembly is provided in the first housing, a power assembly is provided in the second housing, the power assembly includes a valve core, the valve core is provided with a clamping portion at one end, and the valve core has a slope relative to the first direction near the clamping portion.

[0008] Further, the power assembly further includes a first sealing member, and the first sealing member is arranged at the end face of the second housing close to the first housing.

[0009] Further, a cavity is formed between the valve core portion, the second housing, and the first sealing member, and a spring is sleeved on the valve core and arranged in the cavity.

[0010] Further, the second housing outer surface is further provided with a second sealing member, and an air inlet hole is further provided between the second sealing members on the surface of the second housing.

[0011] Further, on the side of the second seal away from the first seal, the surface of the second housing is further provided with an air outlet hole.

[0012] Further, between the air inlet hole and the air outlet hole, the second housing is further provided with a limiting portion, the clamping portion is matched with the limiting portion, and the clamping portion is further provided with a third seal.

[0013] Further, the driving assembly comprises a stator, a coil and a magnet, the stator is connected to the first housing, the coil is arranged in the stator, the magnet is arranged in the coil and connected to the stator.

[0014] Further, the coil is matched with the magnet and is movable in a first direction relative to the magnet.

[0015] Further, the proportional valve further comprises an adapter plate, one end of the adapter plate is connected to the coil, and the other end of the adapter plate is connected to the valve core.

[0016] Further, the outer surface of the second housing is further provided with a threaded portion.

[0017] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0018] (1) The utility model discloses a proportional valve, which comprises a first housing, a second housing, a valve core, a driving assembly and a proportional valve.

[0019] (2) The utility model further comprises a first seal, a second seal and a third seal, which can ensure the sealing performance and stability of the gas flow. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The utility model discloses a proportional valve, which comprises a first housing, a second housing, a valve core, a driving assembly and a proportional valve.

[0021] Figure 2 The utility model discloses a proportional valve, which comprises a first housing, a second housing, a valve core, a driving assembly and a proportional valve.

[0022] Marked in the drawing: 1, first shell; 2, second shell; 21, second sealing element; 22, air inlet hole; 23, air outlet hole; 24, limiting part; 25, threaded part; 3, drive assembly; 31, stator; 32, coil; 33, magnet; 4, power assembly; 41, valve core; 411, clamping part; 412, inclined surface; 413, third sealing element; 42, first sealing element; 5, spring; 6, adapter plate. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will make further detailed description of the utility model of a proportional valve combined with the drawings and specific embodiments. According to the following description, the advantages and features of the utility model will be more clear. It should be noted that the drawings are very simplified and all use non-precise scale, only to facilitate, clearly assist the purpose of explaining the embodiment of the utility model. In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the drawings. It is known that the structure, proportion, size and the like shown in the drawings attached to the specification are only used to cooperate with the content disclosed in the specification, so that people skilled in the art can understand and read, and not to limit the limiting conditions of the implementation of the utility model, so it does not have the technical essence, any modification of structure, change of proportion relationship or adjustment of size, as long as it does not affect the effect and purpose that the utility model can produce, it should still fall within the scope of the technical content disclosed by the utility model.

[0024] Please refer to Figure 1 and Figure 2 , the proportional valve of the embodiment, the proportional valve includes the first shell 1 and the second shell 2 connected with each other, the drive assembly 3 is arranged in the first shell 1, the power assembly 4 is arranged in the second shell 2, and the drive assembly 3 is used to drive the power assembly 4 to move.

[0025] Further, the power assembly 4 includes a valve core 41, one end of the valve core 41 is provided with a clamping part 411, and the valve core 41 has an inclined surface 412 relative to the first direction near the clamping part 411. In the embodiment, the first direction is the length direction of the valve core 41, and when the valve core 41 moves, the inclined surface 412 can affect the flow of gas in a gradual and linear manner. This design helps to realize accurate control of gas flow and reduce the sudden change of gas flow, thereby improving the stability and efficiency of the system.

[0026] Further, the power assembly 4 further comprises a first seal 42, which is arranged at the end face of the second shell 2 close to the first shell 1 and flush with the end face of the second shell 2. The arrangement of the first seal 42 ensures the sealing of the gas flow and prevents leakage other than the action of the valve core 41. The valve core 41 is partially arranged in the chamber formed between the second shell 2 and the first seal 42. The spring 5 is arranged in the chamber and surrounds the valve core 41.

[0027] Further, the drive assembly 3 comprises a stator 31, a coil 32 and a magnet 33. The stator 31 is connected to the first shell 1 and serves as a fixed part of the drive assembly 3, providing a stable base. The coil 32 is arranged in the stator 31. The magnet 33 is arranged in the coil 32 and connected to the stator 31. The coil 32 is movable relative to the magnet 33 in a first direction. When an electric current passes through the coil 32, a magnetic field is generated. This magnetic field interacts with the magnetic field of the magnet 33, thereby generating a driving force, which causes the coil 32 to move relative to the magnet 33.

[0028] Further, the proportional valve further comprises a adapter plate 6, one end of which is connected to the coil 32, and the other end of which is connected to the valve core 41. When the coil 32 moves, the coil 32 drives the adapter plate 6 to move, and in turn, the valve core 41 follows the movement of the adapter plate 6. Specifically, the drive assembly 3 drives the valve core 41 to move towards the end close to the magnet 33. Based on the arrangement of the spring 5, the valve core 41 compresses the spring 5, and in turn, the spring 5 exerts a reaction force on the valve core 41 due to elastic deformation, causing the valve core 41 to move away from the magnet 33. This reciprocating movement is repeated.

[0029] Further, the second shell 2 has a second seal 21 arranged on its outer surface. In this embodiment, two second seals 21 are arranged on the second shell 2, and between the two second seals 21, an air inlet hole 22 is arranged on the surface of the second shell 2. On the side of the second seal 21 away from the first seal 42, an air outlet hole 23 is arranged on the surface of the second shell 2. The second shell 2 has a threaded portion 25 arranged on its outer surface. Specifically, the threaded portion 25 is arranged to facilitate the connection of the second shell 2 to an external component that contacts the two second seals 21, further ensuring that the gas only enters the second shell 2 from the air inlet hole 22 to be acted upon by the valve core 41.

[0030] Further, between the air inlet hole 22 and the air outlet hole 23, the limiting portion 24 is further arranged inside the second shell 2, the clamping portion 411 is matched with the limiting portion 24, and the third sealing piece 413 is further arranged on the clamping portion 411. That is, when the clamping portion 411 moves to the limiting portion 24, due to the arrangement of the third sealing piece 413, at this time, the gas will not be discharged from the air outlet hole 23 by the valve core 41, and the process of discharging the air outlet hole 23 is only in the stage that the clamping portion 411 is not matched with the limiting portion 24 when the valve core 41 moves.

[0031] The technical features of the above-mentioned embodiments can be combined arbitrarily, and for the sake of brevity, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0032] The above-mentioned embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the scope of the present application. It should be pointed out that, for the ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A proportional valve characterized by: The proportional valve comprises a first shell and a second shell connected with each other, a driving assembly is arranged in the first shell, a power assembly is arranged in the second shell, the power assembly comprises a valve core, the valve core is provided with a clamping part at one end, and the valve core has an inclined surface relative to a first direction near the clamping part.

2. A proportional valve as claimed in claim 1, characterized in that: The power assembly further comprises a first sealing element arranged at an end face of the second shell close to the first shell.

3. A proportional valve as claimed in claim 2, characterized in that: A cavity is formed between the valve core part, the second shell and the first sealing element, a spring is sleeved on the valve core and arranged in the cavity.

4. A proportional valve as claimed in claim 3, characterized in that: A second sealing element is further arranged on the outer surface of the second shell, and an air inlet hole is further arranged on the surface of the second shell between the second sealing elements.

5. A proportional valve as claimed in claim 4, characterized in that: An air outlet hole is further arranged on the surface of the second shell on the side away from the second sealing element of the first sealing element.

6. A proportional valve as claimed in claim 5, characterized in that: A limiting part is further arranged inside the second shell between the air inlet hole and the air outlet hole, the clamping part is matched with the limiting part, and the clamping part is further provided with a third sealing element.

7. A proportional valve as claimed in claim 6, characterized in that: The driving assembly comprises a stator, a coil and a magnet, the stator is connected to the first shell, the coil is arranged in the stator, and the magnet is built in the coil and connected to the stator.

8. A proportional valve as claimed in claim 7, characterized in that: The coil is matched with the magnet and movable along a first direction relative to the magnet.

9. A proportional valve as claimed in claim 8, characterized in that: The proportional valve further comprises a adapter plate, one end of the adapter plate is connected to the coil, and the other end of the adapter plate is connected to the valve core.

10. A proportional valve as claimed in claim 9, characterized in that: A threaded part is further arranged on the outer surface of the second shell.

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