Normally closed two-position two-way electromagnetic valve assembly

Abstract

The utility model relates to a normally closed type two-position two-way solenoid valve assembly which comprises a valve seat, an ink box groove, a flow channel and a valve cavity communicated with the ink box groove and the flow channel are formed in the valve seat, a plurality of pagoda connectors are laid at the bottom of the valve seat in the length direction of the valve seat, and the pagoda connectors are all communicated with the flow channel. According to the utility model, ink stored in the ink box groove flows into the flow channel through the valve cavity, and is shunted to each pagoda joint through the flow channel, thereby realizing one-inlet and multiple-outlet aiming at large flow, and meeting the large flow discharge requirement in the prior art; meanwhile, the movable iron core can be driven to block the valve cavity through the elastic force of the spring so as to achieve sealing in a normal state, namely a normally-closed type, and after electrification, the first pilot head attracts the magnetic force of the movable iron core, the movable iron core is attracted towards the side away from the valve cavity, the valve cavity communicates with the second O-shaped ring again, and ink discharging can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, in particular to a normally closed two-position two-way solenoid valve assembly. Background Art

[0002] With the development of the inkjet printing industry, many large-ink-volume printheads have emerged to meet the market's printing requirements efficiently and quickly. At the same time, as the flow rate increases, the traditional one-inlet-one-outlet valve is not conducive to the existing flow control, that is, the existing manual valve can no longer control multiple channels at the same time. In order to save labor and solve the large flow demand of controlling multiple channels with one valve, the development of a one-inlet-multiple-outlet large-ink-volume printing solenoid valve is a technical problem that needs to be solved urgently. Utility Model Content

[0003] The utility model addresses the problems in the prior art and provides a normally closed two-position two-way solenoid valve assembly. The specific technical solutions are as follows:

[0004] The present application provides a normally closed two-position two-way solenoid valve assembly, including a valve seat, on which an ink cartridge groove, a flow channel, and a valve cavity connecting the ink cartridge groove and the flow channel are provided. The bottom of the valve seat is provided with several groups of pagoda joints along its length, and the several groups of pagoda joints are all connected to the flow channel.

[0005] As a further technical solution of the utility model, in the axial direction, a pilot head, a spring and a moving iron core connected in sequence are provided in the valve seat, the other end of the pilot head is connected to a static iron core, the static iron core is installed on the valve seat, and a gasket is provided between the static iron core and the valve seat, and a flying wire coil is provided around the static iron core;

[0006] Under normal conditions, the spring is in a compressed state and pushes the moving iron core to block the valve cavity;

[0007] When powered on, the pilot head pulls and attracts the moving iron core and releases the valve cavity.

[0008] As a further technical solution of the present invention, the ink cartridge slot is arranged on the top of the valve seat and placed above the flow channel.

[0009] As a further technical solution of the present invention, the output end of the moving iron core is connected to a plug, and the plug matches the shape of the valve cavity.

[0010] As a further technical solution of the present invention, an O-ring, a pressure plate and a pressure cover are sequentially arranged outside the valve cavity. The pressure cover presses the pressure plate and forces the pressure plate to retract inward to squeeze the O-ring and deform. The pressure plate surrounds the outside of the moving iron core.

[0011] As a further technical solution of the present invention, a stepped groove communicating with the moving iron core is provided on the valve seat, a second O-ring sealing the moving iron core is provided in the stepped groove, and the pressure plate presses against the second O-ring.

[0012] As a further technical solution of the present invention, a steel column is embedded in one end of the flow channel away from the valve cavity, and a bolt is connected to the top of the valve seat.

[0013] The beneficial effects of the utility model are as follows:

[0014] (1) In the present application, the ink stored in the ink cartridge slot flows into the flow channel through the valve cavity and is diverted to each pagoda joint through the flow channel, realizing one-inlet and multiple-outlet for large flow, meeting the large flow discharge requirements in the prior art.

[0015] (2) In the present application, the elastic force of the spring can be used to drive the moving iron core to block the valve cavity to achieve closure under normal conditions, that is, normally closed. At the same time, after power is turned on, the pilot head can specifically attract the magnetic force of the moving iron core, and the moving iron core is attracted toward the side away from the valve cavity, and the valve cavity and the flow channel are connected again, so that ink can be discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a normally closed two-position two-way solenoid valve assembly is shown;

[0017] Figure 2 A schematic diagram of the internal structure of a normally closed, two-position, two-way solenoid valve assembly is shown.

[0018] Legend:

[0019] 1. O-ring 1; 2. Moving iron core; 3. Gland; 4. Flying wire coil; 5. Plug; 6. Spring; 7. Pilot head; 8. O-ring 2; 9. Stationary iron core; 10. Pressure plate; 11. Gasket; 12. Valve seat; 14. Pagoda joint; 15. Bolt; 16. Steel column; 17. Cartridge slot; 18. Flow channel. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0021] Figure 1 A schematic diagram of the three-dimensional structure of a normally closed two-position two-way solenoid valve assembly is shown; Figure 2 The internal structure diagram of the normally closed two-position two-way solenoid valve assembly is shown; Figure 1 and Figure 2In the figure, the normally closed two-position two-way solenoid valve assembly includes a valve seat 12, on which an ink cartridge groove 17, a flow channel 18 and a valve cavity connecting the ink cartridge groove 17 and the flow channel 18 are provided. The bottom of the valve seat 12 is provided with a plurality of groups of pagoda joints 14 along its length, and the plurality of groups of pagoda joints 14 are connected to the flow channel 18; the ink stored in the ink cartridge groove 17 flows into the flow channel 18 through the valve cavity, and is diverted to each pagoda joint 14 through the flow channel 18, so as to realize one-in and multiple-out for large flow, and meet the large flow discharge requirements in the prior art; axially, a pilot head 7, a spring 6 and a moving iron core 2 connected in sequence are provided in the valve seat 12, and the other end of the pilot head 7 is connected to a static iron core 9, which is mounted on the valve seat 12, and a gasket 11 is provided between the static iron core 9 and the valve seat 12. , a flying wire coil 4 is arranged around the static iron core 9; under normal conditions, the spring 6 is in a compressed state and pushes the moving iron core 2 to block the valve cavity; under the energized state, the pilot head 7 pulls and adsorbs the moving iron core 2 and releases the valve cavity; the overall flow path is controlled by controlling the penetration or closure of the valve cavity, that is, the switch of the valve cavity is also related to whether the pagoda joint 14 discharges ink, realizing one control multiple, under normal conditions, the flying wire coil 4 has not yet been energized, and under the thrust of the elastic action of the spring 6, the moving iron core 2 is pushed toward the valve cavity and blocks the passage between the valve cavity and the flow channel 18 to cut off the flow path, so that the device as a whole is a valve body of a normally closed structure, and after energization, the pilot head 7 specifically attracts the magnetic force of the moving iron core 2, and the moving iron core 2 is attracted toward the side away from the valve cavity, and the valve cavity and the flow channel 18 are connected again, Ink can be discharged; the ink cartridge slot 17 is arranged on the top of the valve seat 12 and placed above the flow channel 18; since the ink cartridge slot 17 is arranged above the flow channel 18, the ink can be automatically drawn into the flow channel 18 by gravity, and the ink cartridge slot 17 is arranged on the top of the valve seat 12. Since the ink cartridge slot 17 is for bottom ink discharge, the ink can squeeze the air and be discharged from the top, which can avoid or reduce the generation of bubbles in the fluid, and prevent the printing lack of ink and ink interruption caused by the presence of bubbles during the printing process; the output end of the moving iron core 2 is connected to the plug 5, and the plug 5 matches the shape of the valve cavity; the plug 5 is used to correspond to the internal structure of the valve cavity. Under normal circumstances, the plug 5 can ensure the sealing effect of the valve cavity; the outside of the valve cavity is sequentially provided with an O-ring 1, a pressure plate 10 and a pressure cover 3, and the pressure cover 3 The pressure plate 10 is pressed and forced to retract inward to squeeze the O-ring 1 and deform. The pressure plate 10 surrounds the outside of the movable iron core 2. The O-ring 1, the pressure plate 10 and the pressure cover 3 are used to seal the valve cavity to prevent ink leakage. The pressure plate 10 surrounds the outside of the movable iron core 2, which can allow relative sliding between the two and can seal the movable iron core 2 to prevent ink seepage. A stepped groove connected to the movable iron core 2 is provided on the valve seat 12. The stepped groove contains an O-ring 28 that seals the movable iron core 2. The pressure plate 10 presses the O-ring 28. The O-ring 28 is used to seal the gap between the movable iron core 2 and the valve seat 12 to prevent ink seepage. The O-ring 28 is placed in the stepped groove and is restricted by the pressure plate 10 to prevent movement with the movable iron core 2, that is, relative movement with the movable iron core 2 is allowed.One end of the runner 18 away from the valve cavity is embedded with a steel column 16; the steel column 16 is used to block the runner 18 to prevent the ink from leaking out of the runner 18; a bolt 15 is connected to the top of the valve seat 12, and the whole device is externally installed through the bolt 15.

[0022] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it.

Claims

1. Normally closed two-position two-way solenoid valve assembly, characterized in that, It includes a valve seat (12), and a cartridge slot (17), a flow channel (18) and a valve cavity communicating the cartridge slot (17) and the flow channel (18) are formed in the valve seat (12). A plurality of groups of flare fittings (14) are laid along the longitudinal direction of the bottom of the valve seat (12), and all the plurality of groups of flare fittings (14) communicate with the flow channel (18).

2. The normally-closed two-position two-way solenoid valve assembly according to claim 1, characterized in that, Axially, a pilot head (7), a spring (6) and a moving iron core (2) which are connected in sequence are arranged in the valve seat (12). The other end of the pilot head (7) is connected with a stationary iron core (9). The stationary iron core (9) is installed on the valve seat (12), and a gasket (11) is arranged between the stationary iron core (9) and the valve seat (12). A flying wire coil (4) is arranged around the stationary iron core (9). Under normal state, the spring (6) is in a compressed state and pushes the moving iron core (2) to block the valve cavity. Under the energized state, the pilot head (7) pulls and adsorbs the moving iron core (2) and releases the valve cavity.

3. The normally closed two-position two-way solenoid valve assembly according to claim 2, wherein, The cartridge slot (17) is arranged at the top of the valve seat (12) and above the flow channel (18).

4. The normally closed two-position two-way solenoid valve assembly according to claim 3, characterized in that, The output end of the moving iron core (2) is connected with a plug (5), and the plug (5) matches the shape of the valve cavity.

5. The normally closed two-way two-port solenoid valve assembly according to claim 4, characterized in that, An O-ring one (1), a pressing plate (10) and a gland (3) are sequentially arranged outside the valve cavity. The gland (3) presses the pressing plate (10) and forces the pressing plate (10) to close inwards to squeeze the O-ring one (1) to deform. The pressing plate (10) surrounds the moving iron core (2).

6. The normally closed two-position two-way solenoid valve assembly according to claim 5, characterized in that, A stepped groove communicating with the moving iron core (2) is formed in the valve seat (12), and an O-ring two (8) that annularly seals the moving iron core (2) is arranged in the stepped groove. The pressing plate (10) presses the O-ring two (8).

7. The normally closed two-position two-way solenoid valve assembly according to claim 6, characterized in that, A steel column (16) is embedded at one end of the flow channel (18) far from the valve cavity, and a bolt (15) is connected to the top end of the valve seat (12).

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