A proportional valve

Abstract

This utility model relates to the field of gas valves, and in particular to a proportional valve. The proportional valve includes a valve body, which includes a first interface and a second interface, integrally formed. The valve body has a first channel, a second channel, and a third channel. A first through hole is provided between the first and second channels, and a second through hole is provided between the second and third channels. A first valve core is located at the first through hole, and a second valve core is located at the second through hole. It also includes a drive unit for driving the first and second valve cores. The proportional valve provided by this utility model, with its valve body and interface integrally formed, has the advantages of low safety hazards and low production cost.

Description

Technical Field

[0001] This utility model relates to the field of gas valves, and in particular to a proportional valve. Background Technology

[0002] Existing gas proportional valves are generally composed of two parts: a connector and a proportional valve body. The torque during installation can easily lead to poor sealing at the connection, resulting in the risk of gas leakage. Furthermore, since the valve body is used in a high-temperature and humid environment for a long time, the strength of the connecting screws is potentially compromised. The connector and proportional valve are processed and controlled separately, which increases the cost.

[0003] For example, patent document CN106838415A discloses a proportional valve body and a proportional valve. The proportional valve body includes a body extending axially, the body having a first chamber and a second chamber that are axially connected and isolated from each other, the body also having a first through hole penetrating the outer wall of the body and communicating with the first chamber, the first through hole being isolated from the second chamber, and the first chamber and the second chamber of the proportional valve body being formed by extrusion molding.

[0004] For example, patent document CN202580243U discloses a gas proportional valve. The gas proportional valve includes a valve body, on which an inlet, an outlet, and an airflow channel connecting the inlet and the outlet are provided. Along the airflow channel, the valve body is provided with an electromagnetic valve core for controlling the opening and closing of the airflow channel and a proportional valve core for controlling the opening degree of the airflow channel. Utility Model Content

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a proportional valve whose valve body and interface are integrally formed, which has the advantages of low safety risk and low production cost.

[0006] The technical solution adopted by this utility model to solve the problem is: a proportional valve, comprising: a valve body, the valve body including a first interface and a second interface, the valve body, the first interface and the second interface being integrally formed, the valve body having a first channel, a second channel and a third channel, a first through hole between the first channel and the second channel, a second through hole between the second channel and the third channel, a first valve core being provided at the first through hole, and a second valve core being provided at the second through hole; and further comprising a driving part, the driving part being used to drive the first valve core and the second valve core.

[0007] As a further improvement to the above technical solution, the driving unit includes a translational force mechanism, the output shaft of which is connected to the first valve core in a transmission manner, and a return spring is sleeved on the output shaft of the translational force mechanism, the return spring abutting against the first valve core.

[0008] As a further improvement to the above technical solution, the translational power mechanism is a cylinder or an electromagnet.

[0009] As a further improvement to the above technical solution, the driving unit includes an electromagnet, the top of which is provided with a mounting base, a magnetic attractor is slidably installed in the mounting base, a sliding seat is provided on the magnetic attractor, the sliding seat is fixedly connected to the second valve core, a spring is provided in the mounting base, the bottom end and the top end of the spring abut against the mounting base and the sliding seat respectively, and a diaphragm is sealed at the bottom of the second through hole, the diaphragm being fixedly connected to the second valve core.

[0010] As a further improvement to the above technical solution, the magnetic attractant is a permanent magnet.

[0011] As a further improvement to the above technical solution, the bottom of the sliding seat is provided with multiple elastic grippers, and the magnetic suction element is located between the multiple elastic grippers.

[0012] As a further improvement to the above technical solution, the top of the third channel is an opening, and a cover plate is movably installed at the opening.

[0013] The beneficial effects of this utility model are: by integrally molding the valve body and the interface, safety hazards can be reduced and production costs can be lowered. Attached Figure Description

[0014] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention;

[0016] Figure 2 for Figure 1 The exploded view shown;

[0017] Figure 3 This is a cross-sectional view of the present invention.

[0018] In the diagram: 1. Valve body; 11. First interface; 12. Second interface; 13. First channel; 14. Second channel; 15. First through hole; 16. Third channel; 17. Second through hole; 18. Cover plate; 2. Translational force mechanism; 21. First valve core; 22. Return spring; 3. Electromagnet; 31. Mounting base; 32. Magnetic suction element; 33. Spring; 34. Sliding seat; 35. Second valve core; 36. Diaphragm; 37. Grip clamp. Detailed Implementation

[0019] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] Reference Figures 1 to 3 A proportional valve includes: a valve body 1, which includes a first interface 11 and a second interface 12, the valve body 1, the first interface 11 and the second interface 12 being integrally formed, the valve body 1 having a first channel 13, a second channel 14 and a third channel 16, a first through hole 15 between the first channel 13 and the second channel 14, a second through hole 17 between the second channel 14 and the third channel 16, a first valve core 21 at the first through hole 15, and a second valve core 35 at the second through hole 17; and a driving unit for driving the first valve core 21 and the second valve core 35. Since the first interface 11 and the second interface 12 are integrally formed with the valve body 1, no bolts are required for fixing, resulting in good sealing and no leakage during long-term use. During use, the gas enters the first channel 13 through the first interface 11 and then enters the second channel 14 through the first through hole 15. The drive unit can adjust the gap between the first valve core 21 and the first through hole 15 to control the intake volume. The drive unit can also control the gap between the second valve core 35 and the second through hole 17 to control the amount of gas entering the third channel 16 from the second channel 14, thereby controlling the exhaust volume.

[0024] In a preferred embodiment, the drive unit includes a translational force mechanism 2, the output shaft of which is connected to the first valve core 21 in a transmission manner, and a return spring 22 is sleeved on the output shaft of the translational force mechanism 2, the return spring 22 abutting against the first valve core 21.

[0025] In a preferred embodiment, the translational power mechanism 2 is a cylinder or an electromagnet.

[0026] In a preferred embodiment, the drive unit includes an electromagnet 3. A mounting base 31 is provided on the top of the electromagnet 3. A magnetic attractor 32 is slidably mounted inside the mounting base 31. A sliding seat 34 is provided on the magnetic attractor 32, and the sliding seat 34 is fixedly connected to the second valve core 35. A spring 33 is provided inside the mounting base 31, with its bottom and top ends abutting against the mounting base 31 and the sliding seat 34, respectively. A diaphragm 36 is sealed at the bottom of the second through hole 17, and the diaphragm 36 is fixedly connected to the second valve core 35. In use, when the electromagnet 3 is activated, the magnetic attractor 32 moves downward, thereby driving the second valve core 35 to move downward, sealing the second through hole 17. Conversely, when the electromagnet 3 is closed, the second valve core 35 moves upward under the action of the spring 33, creating a gap between the second valve core 35 and the second through hole 17, allowing gas to pass through. The diaphragm 36 then performs its sealing function, preventing gas leakage from the mounting base 31.

[0027] In a preferred embodiment, the magnetic chuck 32 is a permanent magnet. The upward and downward movement of the magnetic chuck 32 can be controlled by changing the direction of the current in the electromagnet 3, thereby improving the mobility of the magnetic chuck 32.

[0028] In a preferred embodiment, the bottom of the sliding base 34 is provided with multiple elastic grippers 37, and the magnetic suction member 32 is located between the multiple elastic grippers 37. This facilitates the fixation of the magnetic suction member 32.

[0029] In a preferred embodiment, the top of the third channel 16 is open, and a cover plate 18 is movably installed at the opening. The cover plate 18 can seal the opening, and it can be removed for maintenance, thus facilitating maintenance.

[0030] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A proportional valve characterized in that, include: The valve body (1) includes a first interface (11) and a second interface (12). The valve body (1), the first interface (11) and the second interface (12) are integrally formed. The valve body (1) is provided with a first channel (13), a second channel (14) and a third channel (16). A first through hole (15) is provided between the first channel (13) and the second channel (14). A second through hole (17) is provided between the second channel (14) and the third channel (16). A first valve core (21) is provided at the first through hole (15), and a second valve core (35) is provided at the second through hole (17). The valve body (1) also includes a driving unit for driving the first valve core (21) and the second valve core (35).

2. A proportional valve as described in claim 1, characterized in that: The drive unit includes a translational force mechanism (2), the output shaft of which is connected to the first valve core (21) in a transmission manner. A return spring (22) is sleeved on the output shaft of the translational force mechanism (2), and the return spring (22) abuts against the first valve core (21).

3. A proportional valve as described in claim 2, characterized in that: The translational force mechanism (2) is a cylinder or an electromagnet.

4. A proportional valve as described in claim 1, characterized in that: The driving unit includes an electromagnet (3), the top of which is provided with a mounting base (31). A magnetic suction element (32) is slidably installed in the mounting base (31). A sliding seat (34) is provided on the magnetic suction element (32). The sliding seat (34) is fixedly connected to the second valve core (35). A spring (33) is provided in the mounting base (31). The bottom end and top end of the spring (33) abut against the mounting base (31) and the sliding seat (34) respectively. A diaphragm (36) is sealed at the bottom of the second through hole (17). The diaphragm (36) is fixedly connected to the second valve core (35).

5. A proportional valve as described in claim 4, characterized in that: The magnetic accumulator (32) is a permanent magnet.

6. A proportional valve as described in claim 4 or 5, characterized in that: The bottom of the sliding seat (34) is provided with multiple elastic grippers (37), and the magnetic suction member (32) is located between the multiple elastic grippers (37).

7. A proportional valve as described in claim 1, characterized in that: The top of the third channel (16) is an opening, and a cover plate (18) is movably installed at the opening.

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