Solenoid valve

Abstract

The utility model discloses an electromagnetic valve which comprises a valve body, an iron core assembly, a steel pipe, a coil assembly and a terminal. An inlet and an outlet are formed in the valve body; the iron core assembly is arranged above the valve body and is used for sealing the inlet; the steel pipe is sleeved on the iron core assembly and is integrally formed; the coil assembly is sleeved on the steel pipe and comprises a coil rack, a coil is wound on the coil rack, two plug-in mounting positions are arranged on the coil rack, bayonet holes are formed in the two plug-in mounting positions, the first terminal and the second terminal are respectively inserted into the two plug-in mounting positions, clamping blocks are arranged on the first terminal and the second terminal, and the clamping blocks are clamped into the bayonet holes. The installation stability of the first terminal and the second terminal is ensured, and the problem that the terminals are separated from the coil rack in the process of winding a coil on the coil rack is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and particularly relates to a solenoid valve. Background Art

[0002] A solenoid valve is an industrial device controlled by electromagnetism and is a basic automation component for controlling fluids. The on-off of the solenoid valve is controlled by the energization and de-energization of an electromagnet coil. During production and processing, when winding the coil on the coil holder, the problem that the terminal disengages from the coil holder easily occurs, affecting the yield rate. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, an embodiment of the utility model provides a solenoid valve, which includes a valve body, an iron core assembly, a steel pipe, a coil assembly, and a terminal; an inlet and an outlet are provided on the valve body; the iron core assembly is installed above the valve body, and the iron core assembly is used to close the inlet; the steel pipe is sleeved on the iron core assembly, and the steel pipe is integrally formed; the coil assembly is sleeved on the steel pipe, the coil assembly includes a coil holder, two insertion positions are provided on the coil holder, and bayonet holes are provided at the two insertion positions; the terminal includes a first terminal and a second terminal, the first terminal and the second terminal are respectively inserted into the two insertion positions, and clamping blocks are provided on both the first terminal and the second terminal, and the clamping blocks are snapped into the bayonet holes.

[0004] According to some embodiments of the utility model, it further includes a cover shell, the cover shell is installed outside the coil assembly, the iron core assembly includes a static iron core, a static iron core, and a closing block, the static iron core is inserted into the upper port of the steel pipe, the static iron core is installed inside the steel pipe, the static iron core is fixed on the cover shell, a chamber is provided inside the static iron core, and the closing block is installed in the chamber.

[0005] According to some embodiments of the utility model, a first return spring is installed in the chamber, and the lower end of the first return spring abuts against the closing block.

[0006] According to some embodiments of the utility model, a second return spring is sleeved on the lower end of the static iron core, and the upper end of the second return spring abuts against the steel pipe.

[0007] According to some embodiments of the utility model, a split ring is installed at the lower end of the static iron core.

[0008] According to some embodiments of the utility model, the static iron core is welded to the steel pipe.

[0009] According to some embodiments of the utility model, the steel pipe includes a bowl portion, and the bowl portion presses against the upper end of the second return spring.

[0010] According to some embodiments of the present utility model, the steel pipe includes a bowl portion, a compression nut is installed on the valve body, and the compression nut presses the bowl portion onto the valve body.

[0011] According to some embodiments of the present utility model, a sealing ring is installed between the bowl portion and the valve body.

[0012] The present utility model has at least the following beneficial effects:

[0013] Two insertion positions are provided on the coil bobbin, bayonet holes are provided at the two insertion positions, the first terminal and the second terminal are respectively inserted into the two insertion positions, and blocks are provided on both the first terminal and the second terminal, and the blocks are snapped into the bayonet holes, ensuring the stable installation of the first terminal and the second terminal and avoiding the problem that the terminals are detached from the coil bobbin during the process of winding the coil on the coil bobbin.

[0014] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0015] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0016] Figure 1 is an overall schematic diagram of an embodiment of the present utility model;

[0017] Figure 2 is a cross-sectional schematic diagram of an embodiment of the present utility model. Detailed Embodiments

[0018] The embodiments of the present utility model are described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationship involved, such as up, down, front, back, left, right, etc., indicates the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0020] In the description of the present utility model, the meaning of "a plurality of" is more than two, and understandings such as "greater than", "less than", and "exceeding" do not include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0021] In the description of the present utility model, unless otherwise clearly defined, terms such as "arrangement", "installation", and "connection" should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above terms in the present utility model in combination with the specific content of the technical solution.

[0022] Refer to Figure 1 , 2 , a solenoid valve, comprising a valve body 100, an iron core assembly 200, a steel pipe 300, a coil assembly 400, and terminals; an inlet 110 and an outlet 120 are provided on the valve body 100; the iron core assembly 200 is installed above the valve body 100, and the iron core assembly 200 is used to close the inlet 110; the steel pipe 300 is sleeved on the iron core assembly 200, and the steel pipe 300 is integrally formed; the coil assembly 400 is sleeved on the steel pipe 300, the coil assembly 400 includes a coil bobbin 410, a coil is wound on the coil bobbin 410, two insertion positions 411 are provided on the coil bobbin 410, and bayonet holes 412 are provided at the two insertion positions 411; the terminals include a first terminal 500 and a second terminal 600, the first terminal 500 and the second terminal 600 are respectively inserted into the two insertion positions 411, and locking blocks 101 are provided on both the first terminal 500 and the second terminal 600, and the locking blocks 101 are snapped into the bayonet holes 412.

[0023] Two insertion positions 411 are provided on the coil bobbin 410, bayonet holes 412 are provided at the two insertion positions 411, the first terminal 500 and the second terminal 600 are respectively inserted into the two insertion positions 411, and locking blocks 101 are provided on both the first terminal 500 and the second terminal 600, and the locking blocks 101 are snapped into the bayonet holes 412, which ensures the stable installation of the first terminal 500 and the second terminal 600 and avoids the problem that the terminals are detached from the coil bobbin 410 during the process of winding the coil on the coil bobbin 410.

[0024] Refer to Figure 2 , further comprising a cover shell 700, the cover shell 700 is installed outside the coil assembly 400, the iron core assembly 200 includes a stationary iron core 210, a moving iron core 220, and a closing block 230, the stationary iron core 210 is inserted into the upper port of the steel pipe 300, the stationary iron core 210 is welded to the steel pipe 300, the moving iron core 220 is inserted into the steel pipe 300, the stationary iron core 210 is fixed to the cover shell 700, a chamber 221 is provided inside the moving iron core 220, and the closing block 230 is installed inside the chamber 221.

[0025] When the coil is de-energized, under the action of their own gravity, the moving iron core 220 and the closing block 230 cause the closing block 230 to block the inlet 110, and the valve body 100 is closed; when the coil is energized, the moving iron core 220 moves upward to engage with the static iron core 210 and drives the closing block 230 to move, thereby opening the valve body 100, and the medium flows in the valve body 100.

[0026] A first return spring 240 is installed in the chamber 221. The lower end of the first return spring 240 abuts against the closing block 230, and the first return spring 240 is used to assist the closing block 230 to reset.

[0027] A shunt ring 260 is installed at the lower end of the static iron core 210, which can effectively avoid the bouncing phenomenon of the AC electromagnet.

[0028] At the same time, a second return spring 250 is sleeved at the lower end of the moving iron core 220. The upper end of the second return spring 250 abuts against the steel pipe 300; the elastic force of the second return spring 250 assists the moving iron core 220 to reset, and the resistance of the second return spring 250 can also effectively avoid the impact force of the moving iron core 220 on the static iron core 210 and the shunt ring 260, effectively avoid vibration, and prevent damage to the shunt ring 260.

[0029] Refer to Figure 2 , the steel pipe 300 includes a bowl portion 310. The bowl portion 310 presses against the upper end of the second return spring 250. A compression nut 800 is installed on the valve body 100. The compression nut 800 presses the bowl portion 310 against the valve body 100, and a sealing ring 900 is installed between the bowl portion 310 and the valve body 100.

[0030] In the description of this specification, the descriptions with reference terms such as "some embodiments" or "it is conceivable that" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0031] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present invention.

Claims

1. A solenoid valve, characterized in that, Comprising: A valve body (100) having an inlet (110) and an outlet (120) formed thereon. An iron core assembly (200) mounted above the valve body (100) and configured to close the inlet (110). A steel pipe (300) sleeved on the iron core assembly (200), the steel pipe (300) being integrally formed. A coil assembly (400) sleeved on the steel pipe (300), the coil assembly (400) including a coil bobbin (410) having two insertion positions (411) provided thereon, and bayonet holes (412) provided at the two insertion positions (411). Terminals including a first terminal (500) and a second terminal (600), the first terminal (500) and the second terminal (600) being respectively inserted into the two insertion positions (411), and latch blocks (101) being provided on both the first terminal (500) and the second terminal (600), the latch blocks (101) being snapped into the bayonet holes (412).

2. The solenoid valve according to claim 1, characterized in that, Further comprising a cover (700) mounted outside the coil assembly (400), the iron core assembly (200) including a stationary iron core (210), a movable iron core (220), and a closing block (230), the stationary iron core (210) being inserted into the upper port of the steel pipe (300), the movable iron core (220) being inserted into the steel pipe (300), the stationary iron core (210) being fixed to the cover (700), a chamber (221) being provided inside the movable iron core (220), and the closing block (230) being inserted into the chamber (221).

3. The solenoid valve according to claim 2, wherein, A first return spring (240) is inserted into the chamber (221), and the lower end of the first return spring (240) abuts against the closing block (230).

4. The solenoid valve according to claim 2, wherein A second return spring (250) is sleeved on the lower end of the movable iron core (220), and the upper end of the second return spring (250) abuts against the steel pipe (300).

5. A solenoid valve according to claim 2, characterized in that, A split ring (260) is mounted at the lower end of the stationary iron core (210).

6. An electromagnetic valve according to claim 2, wherein, The stationary iron core (210) is welded to the steel pipe (300).

7. An electromagnetic valve according to claim 4, characterized in that, The steel pipe (300) includes a bowl portion (310) that presses against the upper end of the second return spring (250).

8. A solenoid valve according to claim 1, characterized in that, The steel pipe (300) includes a bowl portion (310), and a compression nut (800) is mounted on the valve body (100), the compression nut (800) pressing the bowl portion (310) against the valve body (100).

9. An electromagnetic valve according to claim 8, characterized in that, A sealing ring (900) is provided between the bowl portion (310) and the valve body (100).

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