A novel diaphragm solenoid valve for inkjet printers

Abstract

This utility model relates to a novel diaphragm solenoid valve for an inkjet printer, comprising a valve body, valve cores on both the left and right sides of the valve body, and control components for controlling the left and right movement of the valve cores. An ink outlet channel extending through one side of the outer wall is provided in the middle of the valve body. Ink inlet channels extending through the outer wall are provided on both the left and right sides of the ink outlet channel. An ink inlet port is provided between the ink inlet channel and the ink outlet channel. A valve core movable cavity is provided at both the left and right ends of the valve body. A plug port communicating with the valve core movable cavity is provided on the opposite side of the ink inlet port in the ink inlet channel. One end of the valve core is movably fitted within the valve core movable cavity. The valve core includes a valve core abutment that passes through the plug port and enters the ink inlet channel. The valve core abutment is used to seal the ink inlet port under the control of the control components. A sealing mechanism is provided between the valve core abutment and the plug port. This application, by optimizing the valve body structure, shortens the ink flow path length inside the solenoid valve and reduces the ink retention volume.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valve technology, and in particular to a novel diaphragm solenoid valve for inkjet printers. Background Technology

[0002] Inkjet printers often use solenoid valves to control ink ejection. Small character inkjet printers typically use fast-drying basic solvent inks. Existing micro-solenoid valves, such as the one with patent number CN217977649U, have a special structure where ink flows through a flow chamber to contact the valve core, spring, and other components. If the inkjet printer is stopped for an extended period, the ink in the flow chamber can dry out and freeze the valve core, making it difficult to restart. Therefore, a micro-diaphragm solenoid valve for inkjet printers, patent number CN222669007U, proposes a diaphragm sealing plug fixedly installed in the flow chamber. Through the action of the diaphragm sealing plug… The ink flowing through the flow chamber is completely isolated from the valve core and other components, so there is no need to worry about the ink affecting the valve core and other components after drying. However, the inkjet printer uses a miniature diaphragm solenoid valve. When the ink flows, it needs to enter the first cavity 111 of the flow chamber 11 from the ink inlet channel 14 through the ink outlet 13, and then exit from the ink outlet channel 12. The first cavity 111 has a large space, and the ink outlet channel 12 is also relatively long in order to connect to the first cavity 111. This results in a long path for the ink to flow within the diaphragm solenoid valve, which leads to more ink accumulation and slows down the control speed of the diaphragm solenoid valve on the ink. Therefore, it is necessary to further reduce the space in which the ink contacts the diaphragm solenoid valve and shorten the flow path of the ink within the diaphragm solenoid valve. Utility Model Content

[0003] This invention proposes a novel diaphragm solenoid valve for inkjet printers, which solves the aforementioned problems existing in the use of existing technologies.

[0004] The technical solution of this utility model is implemented as follows: A novel inkjet printer diaphragm solenoid valve includes a valve body, valve cores and control components for controlling the left and right movement of the valve cores are provided on both the left and right sides of the valve body, an ink outlet channel is provided in the middle of the valve body through one side of the outer wall, an ink inlet channel is provided on both the left and right sides of the ink outlet channel through the outer wall, an ink passage is provided between the ink inlet channel and the ink outlet channel, a valve core movable cavity is provided on both the left and right ends of the valve body, a plug passage is provided on the opposite side of the ink passage of the ink inlet channel and communicates with the valve core movable cavity, one end of the valve core is movably fitted in the valve core movable cavity, the valve core includes a valve core abutment that passes through the plug passage and enters the ink inlet channel, the valve core abutment is used to block the ink passage under the control of the control components, and a sealing mechanism is provided between the valve core abutment and the plug passage.

[0005] Preferably, the sealing mechanism includes a diaphragm sealing plug sleeved outside the valve core abutment. The diaphragm sealing plug includes an integrally formed sealing abutment, a corrugated connecting sleeve, and an isolation sealing sleeve. The sealing abutment wraps around the end of the valve core abutment near the ink inlet and is used to block the ink inlet. The isolation sealing sleeve extends from the plug opening into the valve core movable cavity. The corrugated connecting sleeve connects the sealing abutment and the isolation sealing sleeve. The valve core movable cavity is provided with a pressure seat for pressing the isolation sealing sleeve onto the valve body.

[0006] Preferably, the sealing head has an integrally formed retaining ring, and the valve core abutment has a retaining groove for the retaining ring to be engaged.

[0007] Preferably, the retaining ring has a retaining ring bevel on the side facing the valve core, and the valve core abutment has an inclined chamfer on the end near the ink port.

[0008] Preferably, the valve body has a retaining protrusion ring on the side edge of the ink inlet facing the valve core abutment.

[0009] Preferably, the valve body has a plurality of sealing protrusions in the valve core movable cavity for abutting against the isolation sealing sleeve. The pressure seat is fixedly disposed between the control component and the diaphragm sealing plug and is used to press the isolation sealing sleeve onto the sealing protrusions. The pressure seat has an movable opening for the valve core abutment to pass through.

[0010] Preferably, the ink inlet to the ink inlet channel is inclined toward the side of the ink outlet channel that penetrates the outer wall.

[0011] In summary, the beneficial effects of this utility model are as follows:

[0012] 1. This application optimizes the valve body structure, allowing the ink inlet and outlet channels to be directly connected via an ink port. This avoids the path required in existing technologies where ink must first enter a large flow chamber before flowing out, significantly shortening the ink flow path length within the solenoid valve and reducing ink retention volume. This improves the solenoid valve's response speed and reduces the risk of ink drying and clogging. Furthermore, the sealing mechanism effectively prevents ink from entering the valve core's moving chamber, improving equipment stability and lifespan.

[0013] 2. The sealing mechanism adopts an integrally molded diaphragm sealing plug, and uses a corrugated connecting sleeve to achieve flexible sealing and displacement compensation, so that the valve core can maintain good sealing performance during movement; at the same time, the isolation sealing sleeve extends to the valve core moving cavity and is fixed by the pressure seat, effectively preventing ink from seeping into the valve core moving cavity through the plug outlet, avoiding contamination and corrosion of the valve core components, and improving the overall sealing performance and reliability.

[0014] 3. By setting up a retaining ring and retaining groove mating structure, a stable connection is achieved between the sealing abutment and the valve core abutment, preventing the sealing abutment from falling off or shifting during use, enhancing the stability and durability of the sealing structure, and ensuring sealing reliability during long-term operation. Furthermore, the beveled surface of the retaining ring and the chamfered angle on the valve core abutment improve the assembly efficiency between the sealing abutment and the valve core abutment during assembly.

[0015] 4. The ink inlet is designed with an inclined structure, which facilitates the rapid and smooth flow of ink from the ink inlet channel to the ink outlet channel, reduces the accumulation and residue of ink at the ink inlet, reduces the possibility of clogging caused by ink drying, and further improves the working efficiency and cleaning performance of the solenoid valve. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure at point A in the middle.

[0019] In the diagram: 1. Valve body; 11. Ink outlet channel; 12. Ink inlet channel; 13. Ink outlet; 14. Valve core moving chamber; 15. Plug outlet; 16. Supporting protrusion ring; 17. Sealing protrusion ring; 2. Valve core; 21. Valve core abutment; 211. Inclined chamfer; 212. Slot; 3. Diaphragm sealing plug; 31. Sealing abutment; 311. Snap ring; 312. Snap ring bevel; 32. Corrugated connecting sleeve; 33. Isolation sealing sleeve; 4. Pressure seat; 41. Moving port; 51. Fixing bracket; 52. Connecting pipe; 53. Coil assembly; 54. U-shaped iron; 55. Fixed iron core; 56. Retaining ring; 57. Spring. Detailed Implementation

[0020] The following will refer to the appendix in the embodiments of this utility model. Figure 1-2 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] Example:

[0022] like Figures 1 to 2 As shown, this utility model discloses a novel diaphragm solenoid valve for an inkjet printer, including a valve body 1. Valve cores 2 and control components for controlling the left and right movement of the valve cores 2 are provided on both the left and right sides of the valve body 1. An ink outlet channel 11 extending through one side of the outer wall is opened in the middle of the valve body 1. Furthermore, ink inlet channels 12 extending through the outer wall are also opened on both the left and right sides of the ink outlet channel 11. An ink passage 13 is provided between the ink inlet channel 12 and the ink outlet channel 11. Additionally, on the valve body... Both ends of 1 are provided with valve core movable cavities 14, and the ink inlet channel 12 is provided with a plug passage 15 connected to the valve core movable cavity 14 on the opposite side of the ink outlet 13. One end of the valve core 2 is movably fitted in the valve core movable cavity 14. The valve core 2 includes a valve core abutment 21 that passes through the plug passage 15 and enters the ink inlet channel 12. The valve core abutment 21 is used to block the ink outlet 13 under the control of the control component. There is a sealing mechanism between the valve core abutment 21 and the plug passage 15.

[0023] Specifically, the sealing mechanism includes a diaphragm sealing plug 3 sleeved outside the valve core abutment 21. The diaphragm sealing plug 3 includes an integrally formed sealing abutment 31, a corrugated connecting sleeve 32, and an isolation sealing sleeve 33. The sealing abutment 31 wraps around the end of the valve core abutment 21 near the ink port 13 and is used to block the ink port 13. The isolation sealing sleeve 33 extends from the plug opening 15 into the valve core movable cavity 14. The corrugated connecting sleeve 32 connects the sealing abutment 31 and the isolation sealing sleeve 33, providing flexible connection and displacement compensation functions. A pressure seat 4 is provided in the valve core movable cavity 14 to press the isolation sealing sleeve 33 onto the valve body 1.

[0024] In this utility model, a retaining ring 311 is integrally formed inside the sealing abutment 31, and a retaining groove 212 is provided on the valve core abutment 21 for the retaining ring 311 to be engaged. By setting the matching structure of the retaining ring 311 and the retaining groove 212, a stable connection between the sealing abutment 31 and the valve core abutment 21 is achieved, preventing the sealing abutment 31 from falling off or shifting during use, enhancing the stability and durability of the sealing structure, and ensuring the sealing reliability during long-term operation.

[0025] Furthermore, in order to facilitate the insertion of the retaining ring 311 into the retaining groove 212, the retaining ring 311 has a retaining ring bevel 312 on the side facing the valve core 2, and the valve core abutment 21 has an inclined chamfer 211 on the end near the ink port 13.

[0026] To improve sealing performance, the valve body 1 has a retaining protrusion ring 16 on the side edge of the ink inlet 13 facing the valve core abutment 21. The retaining protrusion ring 16 provides limiting support when the valve core abutment 21 closes the ink inlet 13, enhances the contact pressure between the sealing abutment 31 and the ink inlet, and prevents ink leakage.

[0027] In this utility model, in order to prevent ink from seeping into the valve core moving cavity 14 from the plug opening 15 and improve the sealing effect, the valve body 1 is provided with a number of sealing protrusion rings 17 in the valve core moving cavity 14 for forming abutment with the isolation sealing sleeve 33, and the pressure seat 4 is fixedly disposed between the control component and the diaphragm sealing plug 3, and is used to press the isolation sealing sleeve 33 onto the sealing protrusion rings 17. The pressure seat 4 is provided with a movable opening 41 for the valve core abutment 21 to pass through.

[0028] In this invention, the ink inlet 13 to the ink inlet channel 12 is inclined toward the side of the ink outlet channel 11 that extends through the outer wall. This structure facilitates the rapid and smooth flow of ink from the ink inlet channel 12 to the ink outlet channel 11, reduces ink accumulation and residue at the ink inlet 13, lowers the possibility of clogging due to ink drying, and further improves the working efficiency and cleaning performance of the solenoid valve.

[0029] It should be noted that the control components are the same as those in the prior art, mainly including a fixing frame 51, a coil assembly 53, and a U-shaped iron 54. The fixing frame 51 is detachably connected to the valve body 1 by screws. The fixing frame 51 includes a connecting pipe 52. The coil assembly 53 is sleeved on the connecting pipe 52 and is made of nylon cast and sealed as a whole, providing good insulation, sealing, and moisture-proof performance. The fixed iron core 55 is fixedly connected to the side of the connecting pipe 52 away from the valve body 1, and the valve core 2 is movably disposed inside the connecting pipe 52 on the other side. The middle part of the U-shaped iron 54 abuts against the end of the coil assembly 53 away from the valve body 1, and its two sides wrap around the outer wall of the coil assembly 53. The fixed iron core 55 penetrates the U-shaped iron 54 and is connected to a retaining ring 56. In addition, a spring 57 is included, which is sleeved on the valve core 2 to push the valve core 2 to reset.

[0030] The working principle of this utility model is as follows: When the solenoid valve is not energized, the force of the spring 57 causes the valve core abutment 21 to press against the sealing abutment 31 under the action of the valve core 2, thus blocking the ink outlet 13. At this time, ink cannot enter the ink outlet 13 from the ink inlet channel 12, thereby preventing the flow of ink. When the solenoid valve is energized, the magnetic field generated by the coil assembly 53 attracts the valve core 2 to move towards the fixed iron core 55, overcoming the force of the spring 57, causing the valve core abutment 21 to move away from the ink outlet 23 with the sealing abutment 31, opening the gap between the ink outlets 13, allowing ink to flow into the ink outlet 13 and out through the ink outlet channel 11.

[0031] It should also be noted that the terms used in this utility model, such as "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation 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 limiting the scope of protection of this utility model.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel diaphragm solenoid valve for an inkjet printer, comprising a valve body, wherein valve cores are provided on both the left and right sides of the valve body, and control components for controlling the left and right movement of the valve cores, characterized in that: The valve body has an ink outlet channel extending through one side of the outer wall in the middle. The valve body also has ink inlet channels extending through the outer wall on both the left and right sides of the ink outlet channel. An ink passage is provided between the ink inlet channel and the ink outlet channel. A valve core movable cavity is provided at both the left and right ends of the valve body. A plug passage is provided on the opposite side of the ink passage in the ink inlet channel, which is connected to the valve core movable cavity. One end of the valve core is movably fitted in the valve core movable cavity. The valve core includes a valve core abutment that passes through the plug passage and enters the ink inlet channel. The valve core abutment is used to block the ink passage under the control of the control component. A sealing mechanism is provided between the valve core abutment and the plug passage.

2. The novel inkjet printer diaphragm solenoid valve according to claim 1, characterized in that: The sealing mechanism includes a diaphragm sealing plug sleeved outside the valve core abutment. The diaphragm sealing plug includes an integrally formed sealing abutment, a corrugated connecting sleeve, and an isolation sealing sleeve. The sealing abutment wraps around the end of the valve core abutment near the ink inlet and is used to block the ink inlet. The isolation sealing sleeve extends from the plug opening into the valve core movable cavity. The corrugated connecting sleeve connects the sealing abutment and the isolation sealing sleeve. The valve core movable cavity is provided with a pressure seat for pressing the isolation sealing sleeve onto the valve body.

3. A novel diaphragm solenoid valve for inkjet printers according to claim 2, characterized in that: The sealing head has an integrally formed retaining ring, and the valve core abutment has a retaining groove for the retaining ring to be engaged.

4. A novel diaphragm solenoid valve for inkjet printers according to claim 3, characterized in that: The retaining ring has a retaining ring bevel on the side facing the valve core, and the valve core abutment has an inclined chamfer on the end near the ink port.

5. A novel diaphragm solenoid valve for inkjet printers according to claim 1 or 2, characterized in that: The valve body has a support protrusion ring on the side edge facing the valve core abutment.

6. A novel diaphragm solenoid valve for inkjet printers according to claim 2, characterized in that: The valve body has several sealing protrusions in the valve core movable cavity for abutting against the isolation sealing sleeve. The pressure seat is fixedly installed between the control component and the diaphragm sealing plug and is used to press the isolation sealing sleeve onto the sealing protrusions. The pressure seat has an movable opening for the valve core abutment to pass through.

7. A novel diaphragm solenoid valve for inkjet printers according to claim 1, characterized in that: The ink inlet to the ink inlet channel is inclined toward the side of the ink outlet channel that penetrates the outer wall.

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