CN217396031U

CN217396031U - Universal pressure control device and ink box

Info

Publication number: CN217396031U
Application number: CN202221251593.5U
Authority: CN
Inventors: 陈伟健
Original assignee: Zhuhai Ninestar Management Co Ltd
Current assignee: Zhuhai Ninestar Management Co Ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-09-09
Anticipated expiration: 2032-05-23

Abstract

The utility model discloses a universal pressure control device and an ink box, wherein the universal pressure control device is detachably arranged in the ink box and comprises a base, a pressure control device and a pressure control device, wherein the base is provided with an ink inlet channel and an ink outlet pipe; a first sealing film for sealing the base; the valve component is arranged in the base, a valve cavity is formed in the valve component, and the valve cavity is communicated with the ink outlet pipe; when the valve component is in a closed state, the ink in the ink inlet channel can not enter the valve cavity; when the valve assembly is in the open state, ink in the ink inlet passage can enter the valve cavity. The universal pressure control device can independently test the negative pressure value and is assembled to the ink box after the negative pressure value is qualified, so that the condition that the whole ink box is scrapped when the negative pressure value is detected and found to be unqualified after the ink box is assembled is avoided, and the production cost and the loss are reduced; and the universal pressure control device can be used for ink boxes with different sizes, and the manufacturing cost of the ink box is reduced as only the negative pressure value of the universal pressure control device needs to be measured and only the same detection equipment and tool need to be used.

Description

Universal pressure control device and ink box

Technical Field

The utility model relates to an ink jet printer technical field especially relates to a device and ink horn are pressed in general accuse.

Background

With the development of society and the progress of science and technology, the printer has become common office supplies in life, has greatly made things convenient for people's life, and inkjet printer is one kind in the printing, realizes a kind of air brushing printing equipment that prints after supplying ink to printer head through the ink feed pipeline. The ink box can load ink and provide an ink source for the ink-jet printer, the ink box is an important component of the ink-jet printer, manufacturers can provide ink boxes with different sizes and different capacities in order to meet different customer consumption requirements in the market, and although the overall dimensions of the ink boxes are different, pressure control devices are arranged in the ink boxes.

The ink box in the prior art has the following problems:

(1) after ink cartridges with different sizes or capacities are assembled, different detection equipment and tools are needed to detect the negative pressure values respectively, so that the production cost is high;

(2) because the shell of the ink box and the pressure control device can not be detached for use, each ink box is provided with one pressure control device independently, when the ink is used up, the whole ink box needs to be replaced, and the pressure control device is also replaced, which is not beneficial to saving cost and resources;

(3) after the ink box is manufactured and assembled, the negative pressure value is detected, if the negative pressure value is not qualified, the whole ink box is scrapped, and the shell of the ink box is replaced, so that cost and resources are not saved.

SUMMERY OF THE UTILITY MODEL

According to an aspect of the present invention, there is provided a general pressure control device detachably installed in an ink cartridge, comprising:

a base having an ink inlet channel and an ink outlet tube;

a first sealing membrane for sealing the base;

the valve assembly is arranged in the base, and a valve cavity is formed in the valve assembly and communicated with the ink outlet pipe;

when the valve component is in a closed state, the ink in the ink inlet channel cannot enter the valve cavity;

when the valve component is in an open state, the ink in the ink inlet channel can enter the valve cavity.

In some embodiments, the valve assembly comprises a valve cover, a valve plate and a valve seat, wherein a space between the valve plate and the valve seat is a valve cavity;

the valve cover is provided with a first communicating hole, and the valve plate is provided with a second communicating hole;

when the valve cover is attached to the valve plate, the first communicating hole is not communicated with the second communicating hole, and the valve component is in a closed state;

when the valve cover is separated from the valve plate, the first communicating hole is communicated with the second communicating hole, and the valve component is in an open state.

In some embodiments, the positions of the first communication hole and the second communication hole are staggered from each other.

In some embodiments, a buffer chamber is disposed between the valve chamber and the ink outlet tube, and the ink in the valve chamber enters the ink outlet tube via the buffer chamber.

In some embodiments, the valve seat is provided with a third communication hole, the base is provided with a fourth communication hole, and a liquid passage is formed between the third communication hole and the fourth communication hole and used for communicating the valve cavity and the buffer cavity.

In some embodiments, a filter screen is disposed between the buffer chamber and the ink outlet tube, and the ink in the buffer chamber will enter the ink outlet tube through the filter screen.

In some embodiments, the base is further provided with a bubble storage cavity communicated with the ink outlet pipe, and bubbles in the ink enter the bubble storage cavity through the filter screen.

In some embodiments, the valve assembly further comprises a resilient member disposed between the valve plate and a valve seat;

the elastic member is constructed in a compressed state to generate a pressure to the valve sheet.

According to another aspect of the present invention, there is provided an ink cartridge including a case and a cap member sealing the case from a top;

ink is stored in the shell, and the shell is internally and detachably provided with the universal pressure control device.

In some embodiments, ink within the housing enters the valve assembly from the ink inlet channel; the shell is provided with an ink outlet which is communicated with the ink outlet pipe.

The utility model has the advantages that: the utility model provides a universal pressure control device as an independent part, which can test the negative pressure value independently, and then assemble the ink box after being qualified, thereby avoiding the situation that the whole ink box is scrapped when the negative pressure value is detected after the ink box is assembled and found to be unqualified, and reducing the production cost and the loss; and the universal pressure control device can be used for ink boxes with different sizes, and only the negative pressure value of the universal pressure control device needs to be measured, and only the same detection equipment and tool need to be used, so that compared with the prior art that a plurality of different detection equipment needs to be prepared to measure the negative pressure values of the ink boxes with different sizes, the manufacturing cost of the ink boxes is reduced.

Drawings

FIG. 1 is a first schematic view of an ink cartridge according to some embodiments of the present invention;

FIG. 2 is a second schematic view of an ink cartridge according to some embodiments of the present invention;

FIG. 3 is an exploded view of an ink cartridge according to some embodiments of the present invention;

fig. 4 is an exploded view of a universal pressure control device according to some embodiments of the present invention;

fig. 5 is a schematic structural view of a valve cover of a universal pressure control device according to some embodiments of the present invention;

fig. 6 is a schematic structural view of a valve plate of a general pressure control device according to some embodiments of the present invention;

FIG. 7 is a first schematic view of the universal pressure control device of some embodiments of the present invention with the first sealing membrane removed;

FIG. 8 is a second schematic structural view of the universal pressure control device of some embodiments of the present invention with the first sealing membrane removed;

fig. 9 is a schematic structural view of a base of a universal pressure control device according to some embodiments of the present invention;

fig. 10 is a schematic view of a back side of the base with the second sealing film removed, according to some embodiments of the present invention.

Detailed Description

The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Fig. 1 and 2 schematically show an ink cartridge 1 according to an embodiment of the present invention, which is detachably mounted in a mounting portion of an ink jet printer. As shown in the drawing, the ink cartridge 1 includes a housing 10, a cap member 20, and a common pressure control device 30.

As shown in fig. 1 to 3, the casing 10 has a cavity structure with an open top, the cover member 20 covers and is fixed to the open top of the casing 10, so that the ink cartridge 1 forms a box shape with a substantially rectangular parallelepiped shape, the casing 10 has an internal cavity composed of a bottom wall 1a, a front side wall 1b, a rear side wall 1c, a left side wall 1d and a right side wall 1e, the front side wall 1b is disposed opposite to the rear side wall 1c, the left side wall 1d is disposed opposite to the right side wall 1e, and the cover member 20 is disposed opposite to the bottom wall 1a corresponding to a top wall and closes the open top of the casing 10; the front side wall 1b and the rear side wall 1c are two end walls in the length direction of the casing 10, the left side wall 1d and the right side wall 1e are two side walls in the width direction of the casing 10, and the bottom wall 1a and the cover member 20 are two end walls in the height direction of the casing 10; the cover member 20 may be fixed to the housing 10 by dispensing, welding, clamping or other processes, which are not limited herein.

As shown in fig. 1 and 2, in the present embodiment, a handle 11 is provided on the front side wall 1b of the casing 10, and the handle 11 is used to engage with the mounting portion to fix the ink cartridge 1 in the mounting portion. One end of the handle 11 is fixed to the front side wall 1b, and the other end extends in a direction away from the front side wall 1b, so that the handle 11 is in an obliquely upward state.

As shown in fig. 2 and 3, in the present embodiment, a chip 12 is further disposed on the front side wall 1b of the casing 10, the chip 12 is located at a position of the front side wall 1b close to the bottom wall 1a, and a plurality of electrical contacts are disposed on the chip 12, and when the ink cartridge 1 is in use, the electrical contacts are connected with corresponding contacts on the printer side to establish electrical connection between the chip 12 and the printer.

As shown in fig. 3, in the present embodiment, a partition plate 13 is disposed inside the casing 10, the internal cavity of the casing 10 is divided into a first cavity 14 and a second cavity 15 along the length direction, the first cavity 14 and the second cavity 15 are disposed in communication, and specifically, a communication port may be opened on the partition plate 13 at a position close to the bottom wall 1, so that the first cavity 14 and the second cavity 15 are communicated. The first chamber 14 stores ink, which can flow from the communication port to the second chamber 15. The second chamber 15 is located at a side close to the front sidewall 1 b. In some other embodiments, the partition 13 may not be disposed inside the housing 10, and the internal cavity of the housing 10 is not partitioned.

As shown in fig. 1 to 3, in the present embodiment, the casing 10 further includes an ink outlet 16, the ink outlet 16 is disposed at the bottom of the casing 10 and communicates with the inside of the casing 10, and when the ink cartridge 1 is used, the ink outlet 16 communicates with an ink supply needle on a mounting portion, so that ink in the ink cartridge 1 is output to a printer. Preferably, the ink outlet 16 is located on the same side as the second chamber 15.

As shown in fig. 3, in the present embodiment, the cover member 20 is provided with a vent hole 21, the vent hole 21 communicates with the inside of the housing 10, and the outside air can enter the housing 10 through the vent hole 21 to keep the air pressure inside and outside the housing 10 balanced. Preferably, the vent 21 is located on the same side as the first chamber 14.

Before the ink cartridge 1 is used, the vent hole 21 of the cover member 20 and the ink outlet 16 of the casing 10 are sealed by sealing films and torn off again when in use.

As shown in fig. 3, the universal pressure control device 30 is detachably installed in the ink cartridge 1, specifically, in the second chamber 15 of the casing 10, and after the universal pressure control device 30 is installed in the second chamber 15 from the top opening of the casing 10, the cover member 20 is closed to close the top of the casing 10. Further, the inner side of the cover component 20 may be provided with a positioning portion engaged with or abutting against the general pressure control device 30, so that the general pressure control device 30 in the second chamber 15 can be fixed/limited while the cover component 20 closes the top of the housing 10.

As shown in fig. 4, in the present embodiment, the universal pressure control device 30 includes a base 31, a first sealing membrane 32, and a valve assembly 33.

As shown in fig. 7 to 9, the base 31 is substantially in the form of a box, one surface of which is open, and the surface opposite to the opening is the bottom surface of the base 31, and the open surface of the base 31 is sealed by a first sealing film 32; the base 31 has an ink inlet passage 311 and an ink outlet tube 312; the ink inlet channel 311 has an ink inlet 3111, the ink inlet 3111 is located at the lowest end of the ink inlet channel 311, the ink outlet tube 312 is located at the lower end of the base 31, an ink outlet chamber 316 is arranged in the base 31, a first inlet 3161 is arranged on the ink outlet chamber 316, and the ink outlet chamber 316 is communicated with the ink outlet tube 312. When the universal pressure control device 30 is installed in the casing 10, the ink inlet 3111 is close to the bottom wall 1a of the casing 10, the ink outlet pipe 312 is communicated with the ink outlet 16 on the casing 10, when the ink cartridge 1 is used, the ink in the first chamber 14 flows from the communication port to the second chamber 15, enters the base 31 from the ink inlet 3111, the ink in the base 31 enters the ink outlet chamber 316 through the first inlet 3161, then enters the ink outlet pipe 312 and is discharged to the ink outlet 16, and then is used by the printer.

In this embodiment, the ink outlet tube 312 may be disposed to be entirely located outside the lower wall of the base 31; or all the parts can be arranged at the inner side of the lower wall of the base 31, and when the base 31 is assembled, the lower wall of the base is attached to the bottom wall of the shell 10; it is also possible to arrange that a part of the ink outlet tube 312 is located inside the lower wall of the chassis 31 and a part is located outside the lower wall of the chassis 31. The ink outlet tube 312 may be integrally formed with the base 31 or may be a separate structure, and may be attached to the base 31 by insertion, welding, adhesion, engagement, or the like.

In some other embodiments, the ink outlet chamber 316 may be provided as part of the internal cavity of the ink outlet tube 312.

As shown in fig. 4, the valve assembly 33 is disposed in the base 31 at the upper end side in the base 31, the valve chamber 33a is provided in the valve assembly 33, and the valve chamber 33a communicates with the ink outlet chamber 316; the valve assembly 33 has a closed state and an open state, and when the valve assembly 33 is in the closed state, the ink in the ink inlet passage 311 cannot enter the valve chamber 33 a; when the valve assembly 33 is in the open state, the ink in the ink inlet passage 311 can enter the valve chamber 33 a.

As shown in fig. 4 and 9, specifically, the valve assembly 33 includes a valve cover 331, a valve sheet 332, and a valve seat 333, the valve seat 333 is substantially cylindrical, the valve seat 333 is integrally formed with the base 31, one surface of the valve seat 333 is open, the other surface is a bottom surface thereof, and the bottom surface of the valve seat 333 overlaps with the bottom surface of the base 31. The circumferential wall of the valve seat 333 has a notch 3331, and the notch 3331 is engaged with the cap 331 to limit the cap 331 and prevent the cap 331 from rotating around the central axis of the valve seat 333. An annular groove 3332 is formed in the valve seat 333, and the annular groove 3332 is adapted to fit the valve plate 332.

As shown in fig. 4, 5, 7 and 8, the cap 331 has a substantially circular plate shape, and is matched with the valve seat 333, the valve seat 333 is provided with a protrusion 3311, the protrusion 3311 is engaged with the notch 3331 of the valve seat 333 and is fixedly mounted on the valve seat 333, the cap 331 is located on a side away from the bottom surface of the valve seat 333, the cap 331 is provided with a first connection hole 3312, and the first connection hole 3312 is communicated with the ink inlet passage 311.

As shown in fig. 4 and 6, the valve plate 332 is substantially in the shape of a circular sheet, the shape of the valve plate 332 is matched with that of the valve seat 333, the valve plate 332 is provided with an annular flange 3321, when the valve plate is assembled, the annular flange 3321 of the valve plate 332 is embedded into an annular groove 3332 of the valve seat 333, the valve plate 332 is positioned on the inner side of the valve cover 331 and can move close to or away from the valve cover 331, a space between the valve plate 332 and the valve seat 333 is a valve cavity 33a, and the valve plate 332 is provided with a second communication hole 3322.

As shown in fig. 4 to 6, the first communicating hole 3312 and the second communicating hole 3322 are staggered, preferably, the second communicating hole 3322 is located at a center of the valve plate 332, and the first communicating hole 3312 is offset from the center of the valve cap 331, so that when the valve cap 331 is attached to the valve plate 332, the first communicating hole 3312 and the second communicating hole 3322 are not communicated with each other, and the valve assembly 33 is in a closed state; when the valve plate 332 moves away from the valve cap 331 and the valve cap 331 is separated from the valve plate 332, the first communication hole 3312 communicates with the second communication hole 3322, and the valve assembly 33 is in an open state.

Further, as shown in fig. 4, the valve assembly 33 further includes an elastic member 334, the elastic member 334 is disposed between the valve sheet 332 and the valve seat 333, for example, one end of the elastic member 334 may abut on a bottom surface of the valve seat 333, and the other end abuts on an inner side of the valve sheet 332, the bottom surface of the valve seat 333 may be provided with a fixing seat for fixing the elastic member 334, and the elastic member 334 is configured in a compressed state for generating a pressure on the valve sheet 332.

When the ink cartridge 1 is not used, the valve plate 332 and the valve cap 331 are tightly attached to each other by the elastic force of the elastic member 334 and the pressure of the ink in the valve chamber 33a, the second communication hole 3322 of the valve plate 332 is sealed by the valve cap 331, the ink cannot enter the second communication hole 3322 after entering the first communication hole 3312, and thus cannot enter the valve chamber 33a, and the valve assembly 33 is in a closed state.

When the ink cartridge 1 is used, the ink in the valve cavity 33a is consumed, the pressure in the valve cavity 33a is gradually reduced to form negative pressure, a pressure difference is formed between the inside and the outside of the valve plate 332, when the pressure difference between the inside and the outside of the valve plate 332 reaches a certain degree, the valve plate 332 overcomes the elastic force of the elastic member 334 and moves away from the valve cap 331 to be separated from the valve cap 331, the valve cap 331 does not seal the second communication hole 3322, the valve assembly 33 is in an open state, the second communication hole 3322 can be communicated with the first communication hole 3312, and the ink enters the valve cavity 33a through the second communication hole 3322.

After a certain amount of ink enters the valve cavity 33a, the pressure in the valve cavity 33a increases, the pressure difference between the inner side and the outer side of the valve sheet 332 reaches balance again, the valve sheet 332 moves towards the valve cap 331 due to the restoring force of the elastic member 334, the valve sheet 332 and the valve cap 331 are attached again, the valve assembly 33 is closed, and the ink cannot enter the valve cavity 33 a. During the use of the ink cartridge 1, the valve assembly 33 is continuously switched between the open state and the closed state, and the opening or closing of the valve assembly 33 is controlled by the pressure difference between the inside and the outside of the valve sheet 332.

Further, as shown in fig. 8 to 10, a buffer chamber 313 is further disposed in the base 31, the buffer chamber 313 is located between the valve chamber 33a and the ink outlet chamber 316, and the ink in the valve chamber 33a enters the ink outlet chamber 316 via the buffer chamber 313 and then enters the ink outlet tube 312. Specifically, the valve seat 333 has a bottom surface provided with a third communication hole 3333, the base 31 has a bottom surface provided with a fourth communication hole 3131, the fourth communication hole 3131 is located within the buffer chamber 313, a liquid passage is formed between the third communication hole 3333 and the fourth communication hole 3131 for communicating the valve chamber 33a with the buffer chamber 313, and in the use state, the third communication hole 3333 and the fourth communication hole 3131 are sealed by a second sealing film 3132 to prevent ink from flowing out of the base 31. The ink in the valve chamber 33a flows out from the third communication hole 3333, passes through the liquid passage, and enters the buffer chamber 313 from the fourth communication hole 3131.

Further, as shown in fig. 8 and 9, a filter 314 is disposed between the buffer chamber 313 and the ink outlet tube 312, and the ink in the buffer chamber 313 enters the ink outlet chamber 316 through the filter 314 and then enters the ink outlet tube 312. Specifically, the filter 314 is disposed at the first inlet 3161 of the ink outlet chamber 316, and is used for filtering impurities and foreign matters in the ink to prevent the ink from blocking the print head and degrading the printing quality when the ink is supplied to the print head, and the ink in the buffer chamber 313 passes through the filter 314, enters the ink outlet chamber 316 from the first inlet 3161, and then enters the ink outlet pipe 312 to be discharged.

Further, as shown in fig. 8 and 9, a bubble storage chamber 315 is further disposed in the base 31 and is communicated with the ink outlet chamber 316, the bubble storage chamber 315 is located above the ink outlet chamber 316, a second inlet 3162 is disposed at the top of the ink outlet chamber 316 and is communicated with the bubble storage chamber, bubbles in the ink enter the bubble storage chamber 315 from the second inlet 3162 after the ink in the buffer chamber 313 passes through the filter 314, and the ink is discharged from the ink outlet tube 312 to the ink outlet 16 of the housing 10. When the ink is injected into the ink cartridge 1 and the pressure control device 30 thereof, a certain amount of ink is injected into the bubble storage chamber 315, and the ink in the bubble storage chamber 315 can also enter the ink outlet chamber 316 from the second inlet 3162 and then enter the ink outlet pipe 312 to be utilized by the printer, but when the ink cartridge 1 is used, the ink in the first chamber 14 is consumed first, and the ink in the bubble storage chamber 315 is consumed last.

The universal pressure control device 30 in the embodiment is used as an independent component, can be produced independently, can test the negative pressure value independently, and can be assembled to the ink box 1 after being tested to be qualified, so that the condition that the whole ink box 1 is scrapped when the negative pressure value of the ink box 1 is detected to be unqualified after being assembled is avoided, and the production cost and the loss are reduced.

The universal pressure control device 30 can be used for ink cartridges 1 of different sizes, and is strong in universality. As only the negative pressure value of the universal pressure control device 30 needs to be measured, only the same detection equipment and tool need to be used, compared with the prior art in which a plurality of different detection equipment needs to be prepared to measure the negative pressure values of the ink boxes 1 with different sizes, the manufacturing cost of the ink box 1 is reduced.

When the ink cartridge 1 is exhausted, only the shell 10 can be replaced without replacing the universal pressure control device 30, thereby realizing the reutilization.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. A universal pressure control device that is removably mountable to an ink cartridge, comprising:

a base having an ink inlet channel and an ink outlet tube;

a first sealing membrane for sealing the base;

when the valve component is in a closed state, ink in the ink inlet channel cannot enter the valve cavity;

2. The universal pressure control device of claim 1, wherein the valve assembly comprises a valve cover, a valve plate and a valve seat, and a space between the valve plate and the valve seat is a valve cavity;

when the valve cover is separated from the valve plate, the first communicating hole is communicated with the second communicating hole, and the valve component is in an opening state.

3. The universal pressure control device of claim 2, wherein the first and second communication holes are staggered with respect to each other.

4. The universal pressure control device according to claim 2, wherein a buffer chamber is disposed between the valve chamber and the ink outlet tube, and the ink in the valve chamber enters the ink outlet tube via the buffer chamber.

5. The universal pressure control device according to claim 4, wherein the valve seat is provided with a third communication hole, the base is provided with a fourth communication hole, and a liquid passage is formed between the third communication hole and the fourth communication hole for communicating the valve chamber and the buffer chamber.

6. The universal pressure control device according to claim 4, wherein a filter screen is disposed between the buffer chamber and the ink outlet tube, and the ink in the buffer chamber enters the ink outlet tube through the filter screen.

7. The universal pressure control device according to claim 6, wherein the base further comprises a bubble storage chamber communicating with the ink outlet tube, and bubbles in the ink enter the bubble storage chamber through the filter screen.

8. The universal pressure control device according to any one of claims 2-7, wherein the valve assembly further comprises an elastic member disposed between the valve plate and the valve seat;

9. An ink cartridge includes a case and a cap member that seals the case from the top;

store ink in the casing, its characterized in that:

the housing is detachably provided with a universal pressure control device according to any one of claims 1-8.

10. The ink cartridge of claim 9, wherein ink within the housing enters the valve assembly from the ink feed channel;

the shell is provided with an ink outlet which is communicated with the ink outlet pipe.