Posture adaptive liquid delivery device

Abstract

The present application relates to the technical field of liquid delivery device, especially to a posture self-adaptive liquid delivery device, which comprises a shell and a cover plate, the cover plate and the shell are fixedly connected together, a liquid storage cavity is formed in the shell, a rear-end delivery pump and a driving mechanism are arranged on one side of the shell; one end of the rear-end delivery pump is connected with a second delivery pipe, the other end of the rear-end delivery pump is connected with a first delivery pipe, and the second delivery pipe is connected with the shell; a capillary motion carrier is arranged in the shell, and a guide limiting assembly for limiting the capillary motion carrier is arranged in the liquid storage cavity. The capillary motion carrier arranged in a ring shape is matched with the guide limiting assembly, the capillary motion carrier is arranged in a ring shape along the inner wall of the liquid storage cavity, and the capillary motion carrier can continuously adsorb the liquid in the cavity by capillary action, which is not affected by the liquid level position and the device posture, and the capillary motion carrier can continuously adsorb the liquid in the liquid storage cavity.

Description

Technical Field

[0001] This invention relates to the field of liquid conveying device technology, and more particularly to an attitude-adaptive liquid conveying device. Background Technology

[0002] Liquid delivery devices are complete mechanical components that directionally transport various liquid media, such as water, chemicals, lubricating oil, ink, and cleaning fluid, from storage containers to target locations such as printheads, processing stations, and discharge pipelines. Their core functions are to store, guide, transfer, and quantitatively output liquids, and they are widely used in handheld sprayers, industrial micro-lubrication equipment, inkjet printers, and small fluid supply instruments.

[0003] Currently, most small liquid supply devices, spray devices, micro-lubrication devices, and inkjet liquid supply devices on the market use gravity flow or bottom suction tube negative pressure suction structure to complete liquid delivery. Their core working logic relies on gravity and can only stably extract liquid when the device is vertical. Once the device is inverted, tilted, or placed at an angle, the suction tube will detach from the liquid surface, resulting in malfunctions such as liquid interruption, failure to spray liquid, interruption of oil supply, and intermittent liquid output, which seriously limits the application scenarios and operational flexibility of the device. Summary of the Invention

[0004] The purpose of this invention is to address the following shortcomings in the existing technology: Currently, most small liquid supply devices, spray devices, micro-lubrication devices, and inkjet liquid supply devices on the market use gravity flow or bottom suction tube negative pressure suction structure to complete liquid delivery. Their core working logic relies on gravity and can only stably extract liquid when the device is vertical. Once the device is inverted, tilted, or placed at an angle, the suction tube will detach from the liquid surface, resulting in malfunctions such as liquid interruption, failure to spray liquid, interruption of oil supply, and intermittent liquid output. Therefore, this invention proposes a posture-adaptive liquid delivery device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An attitude-adaptive liquid delivery device includes a housing and a cover plate, the cover plate and the housing being fixedly connected together, a liquid storage cavity being formed inside the housing, and a rear delivery pump and a drive mechanism being provided on one side of the housing.

[0007] One end of the rear delivery pump is connected to a second delivery pipe, and the other end of the rear delivery pump is connected to a first delivery pipe. The second delivery pipe is connected to the housing.

[0008] The housing contains a capillary motion carrier, and the liquid storage cavity contains a guide and limiting component for limiting the capillary motion carrier. The housing has a liquid collection cavity at one end near the drive mechanism. The drive mechanism is connected to a squeezing and dehydrating component, which is used to move and squeeze the capillary motion carrier. The capillary motion carrier passes through the liquid collection cavity.

[0009] Preferably, the capillary motion carrier is arranged along the inner wall of the shell, and the guide and limiting assembly includes multiple positioning blocks. The multiple positioning blocks are arranged sequentially along the inner side of the capillary motion carrier and fixedly installed in the shell. The guide and limiting assembly is connected to the liquid collection cavity to form a ring.

[0010] Preferably, the housing has a liquid outlet located at the liquid collection cavity, one end of the second delivery pipe is inserted into the liquid outlet, and the second delivery pipe is connected to the liquid collection cavity through the liquid outlet.

[0011] Preferably, the liquid collection chamber has a first opening on one side and a second opening on the other side. The extrusion dehydration assembly includes an extrusion wheel, which is rotatably mounted at the second opening. An annular groove is provided on the surface of the extrusion wheel. The capillary motion carrier passes through the groove and the first opening. The cross-section of the groove is smaller than the cross-section of the capillary motion carrier.

[0012] Preferably, the driving mechanism is a motor, the driving end of the driving mechanism is fixedly connected to a rotating shaft, the extrusion wheel is fixedly sleeved on the rotating shaft, and the end of the rotating shaft is inserted into the guide and limiting assembly.

[0013] Preferably, a third opening is provided on one side of the liquid collection cavity, the cross-section of the capillary motion carrier is circular, and the width of the third opening is smaller than the cross-sectional diameter of the capillary motion carrier.

[0014] Preferably, the rear delivery pump is provided with a mounting hole, and a screw is inserted through the mounting hole.

[0015] Preferably, the area of ​​the cover plate is larger than the cross-sectional area of ​​the shell, the end of the shell near the drive mechanism is a flat surface, the end of the shell away from the drive mechanism is an arc surface, and the liquid collection cavity is located at the flat end.

[0016] Preferably, the housing is provided with an infusion port, and a one-way valve is installed on the infusion port.

[0017] Preferably, both the first and second delivery pipes are made of silicone.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This device uses a ring-shaped capillary motion carrier in conjunction with a guide and limiting component. The capillary motion carrier is arranged in a ring along the inner wall of the liquid storage cavity. It continuously adsorbs the liquid in the cavity by capillary action, regardless of the liquid level or the orientation of the device. Whether the device is placed vertically, upside down, horizontally, or tilted, the capillary motion carrier can continuously adsorb the liquid inside the liquid storage cavity.

[0020] 2. This device integrates a squeezing and dehydration component, an independent liquid collection chamber, and an overflow structure. The drive mechanism drives the squeezing wheel to simultaneously achieve capillary carrier traction and liquid squeezing. The adsorbed liquid is uniformly squeezed into the liquid collection chamber for temporary storage. The rear delivery pump draws the liquid from the liquid collection chamber under negative pressure and delivers it outward. The liquid output flow rate is uniform and stable.

[0021] 3. Compared with traditional pumping systems, this device does not require large booster pumps or complex pressure control components. The whole machine is smaller, consumes less power, and operates with less noise. It can be directly adapted to lightweight carriers such as handheld sprayers, micro lubrication equipment, and small inkjet equipment. The manufacturing cost and subsequent maintenance cost are significantly reduced, and it is applicable to a wide range of equipment. Attached Figure Description

[0022] Figure 1 This is a front structural diagram of an attitude-adaptive liquid delivery device proposed in this invention;

[0023] Figure 2 This is a schematic diagram of the rear structure of an attitude-adaptive liquid delivery device proposed in this invention;

[0024] Figure 3 This is a schematic diagram of the end structure of an attitude-adaptive liquid delivery device proposed in this invention;

[0025] Figure 4 This is a schematic diagram of the internal planar structure of an attitude-adaptive liquid delivery device proposed in this invention;

[0026] Figure 5 This is a schematic diagram of the internal three-dimensional structure of an attitude-adaptive liquid delivery device proposed in this invention;

[0027] Figure 6 This is a schematic diagram of the internal side structure of an attitude-adaptive liquid delivery device proposed in this invention;

[0028] Figure 7 This is a partial structural schematic diagram of an attitude-adaptive liquid delivery device proposed in this invention;

[0029] Figure 8 This is a schematic diagram of the structure inside the liquid storage chamber.

[0030] In the figure: 1 cover plate, 2 housing, 3 rear delivery pump, 4 drive mechanism, 5 first delivery pipe, 6 second delivery pipe, 7 guide and limit assembly, 8 capillary motion carrier, 9 extrusion wheel, 10 liquid collection chamber, 11 liquid storage chamber, 12 third opening, 13 rotating shaft, 14 liquid outlet, 15 first opening, 16 second opening. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] In the description of the embodiments of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These are merely for the convenience of describing the invention 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 the invention. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] Reference Figures 1-4 An attitude-adaptive liquid delivery device includes a housing 2 and a cover plate 1, the cover plate 1 and the housing 2 are fixedly connected together, a liquid storage cavity 11 is formed inside the housing 2, and a rear delivery pump 3 and a drive mechanism 4 are provided on one side of the housing 2.

[0035] One end of the rear delivery pump 3 is connected to the second delivery pipe 6, and the other end of the rear delivery pump 3 is connected to the first delivery pipe 5. The second delivery pipe 6 is connected to the housing 2.

[0036] The housing 2 is provided with a capillary motion carrier 8, and the liquid storage cavity 11 is provided with a guide and limiting component 7 for limiting the capillary motion carrier 8. The housing 2 is provided with a liquid collection cavity 10 at one end near the drive mechanism 4. The drive mechanism 4 is connected to a squeezing and dehydrating component, which is used to move and squeeze the capillary motion carrier 8. The capillary motion carrier 8 passes through the liquid collection cavity 10.

[0037] Reference Figure 5 , Figure 6 The capillary motion carrier 8 is arranged along the inner wall of the housing 2. The guide and limiting assembly 7 includes multiple positioning blocks, which are sequentially arranged along the inner side of the capillary motion carrier 8 and fixedly installed inside the housing 2. The guide and limiting assembly 7 is connected to the liquid collection cavity 10 to form a ring. The guide and limiting assembly 7 formed by the multiple positioning blocks is used to restrict the position of the capillary motion carrier 8, so that the capillary motion carrier 8 is restricted to the space between the guide and limiting assembly 7 and the inner wall of the housing 2. Thus, when transporting liquid, the capillary motion carrier 8 can only move within this space. The guide and limiting assembly 7 has the effect of limiting the movement trajectory. The guide and limiting assembly 7 is connected to the liquid collection cavity 10 to form a ring, so that the capillary motion carrier 8 moves along the guide and limiting assembly 7 in a state of passing through the liquid collection cavity 10.

[0038] A liquid outlet 14 is provided on the housing 2 at the position of the liquid collection chamber 10. One end of the second delivery pipe 6 is inserted into the liquid outlet 14, and the second delivery pipe 6 is connected to the liquid collection chamber 10 through the liquid outlet 14. In use, the liquid stored in the liquid collection chamber 10 is transported out by the rear delivery pump 3. The rear delivery pump 3 generates negative pressure, and the liquid in the liquid collection chamber 10 is output from the first delivery pipe 5 through the second delivery pipe 6 and the rear delivery pump 3.

[0039] Reference Figure 7 , Figure 8The liquid collection chamber 10 has a first opening 15 on one side and a second opening 16 on the other side. The extrusion and desiccation assembly includes an extrusion wheel 9, which is rotatably mounted at the second opening 16. An annular groove is provided on the surface of the extrusion wheel 9. The capillary motion carrier 8 passes through the groove and the first opening 15. The cross-section of the groove is smaller than the cross-section of the capillary motion carrier 8. When the capillary motion carrier 8 is moved, the drive mechanism 4 drives the extrusion wheel 9 to rotate through the drive end. The rotation of the extrusion wheel 9 enables the movement of the capillary motion carrier 8. The space of the groove on the extrusion wheel 9 is limited. After the capillary motion carrier 8 passes through the groove, it will be squeezed by the groove, and the liquid adsorbed by the capillary motion carrier 8 will be squeezed out and stored in the liquid collection chamber 10. Then, the downstream delivery pump 3 can transport the liquid stored in the liquid collection chamber 10 outward. The extrusion wheel 9 squeezes the capillary motion carrier 8. There is friction during the squeezing process. Therefore, when the extrusion wheel 9 rotates, it can squeeze the capillary motion carrier 8 while using friction to move the capillary motion carrier 8.

[0040] The drive mechanism 4 is a motor, and a rotating shaft 13 is fixedly connected to the drive end of the drive mechanism 4. The extrusion wheel 9 is fixedly sleeved on the rotating shaft 13, and the end of the rotating shaft 13 is inserted into the guide and limit assembly 7. The drive end of the drive mechanism 4 drives the rotating shaft 13 to rotate, thereby driving the extrusion wheel 9 to rotate. The rotating shaft 13 is a structure that drives and supports the rotation of the extrusion wheel 9.

[0041] A third opening 12 is also provided on one side of the liquid collection chamber 10. The cross-section of the capillary motion carrier 8 is circular, and the width of the third opening 12 is smaller than the cross-sectional diameter of the capillary motion carrier 8. As the extrusion wheel 9 rotates, liquid can be stored in the liquid collection chamber 10. To avoid excessive liquid storage in the liquid collection chamber 10, excess liquid can overflow directly through the third opening 12. The diameter of the capillary motion carrier 8 itself is larger than the width of the third opening 12, which can temporarily isolate the third opening 12. Excess liquid can overflow directly from the capillary motion carrier 8 and flow out and be released through the third opening 12.

[0042] The rear-end delivery pump 3 is provided with mounting holes, through which screws are inserted. The rear-end delivery pump 3 can be fixed by passing the screws through the mounting holes and mounting them on the cover plate 1.

[0043] The area of ​​the cover plate 1 is larger than the cross-sectional area of ​​the shell 2. The end of the shell 2 near the drive mechanism 4 is flat, and the end of the shell 2 away from the drive mechanism 4 is curved. The liquid collection cavity 10 is located at the flat end. The curved end facilitates the movement of the internal capillary motion carrier 8 and reduces frictional resistance during movement. The flat end facilitates the formation of the liquid collection cavity 10 and the installation of the rotatable extrusion wheel 9.

[0044] The housing 2 is provided with an infusion port, and a one-way valve is installed on the infusion port. When liquid is injected into the housing 2, liquid is injected into the liquid storage chamber 11 through the one-way valve, and the liquid is stored in the liquid storage chamber 11 by injection.

[0045] The first conveying pipe 5 and the second conveying pipe 6 are both made of silicone. The soft silicone material of the first conveying pipe 5 and the second conveying pipe 6 allows them to bend adaptively according to the installation angle and position.

[0046] This device is installed via a cover plate 1. The cover plate 1 is installed on the corresponding equipment to realize the installation of this device. The end of the first delivery pipe 5 away from the rear delivery pump 3 is connected to a nozzle or other end structure for liquid output. In use, the liquid storage chamber 11 is filled with liquid. The capillary motion carrier 8 will absorb the liquid under capillary action. In use, the drive mechanism 4 drives the extrusion wheel 9 to rotate through the drive end. When the extrusion wheel 9 rotates, it will extrude the capillary motion carrier 8 in contact with it. During the extrusion process, the liquid can be squeezed into the liquid collection chamber 10 on one side. The rear delivery pump 3 drives the liquid stored in the liquid collection chamber 10 to be absorbed through the second delivery pipe 6 and then output through the first delivery pipe 5.

[0047] As the liquid stored in the storage chamber 11 gradually decreases with the increase of usage time, regardless of whether the device is in the upright, inverted, or side position, since the guide limiting component 7 is arranged around the inner wall of the storage chamber 11, the capillary motion carrier 8 is set in contact with the inner wall of the storage chamber 11. Therefore, the capillary motion carrier 8 will absorb liquid due to capillary action at any angle position. When in use, the drive mechanism 4 drives the squeezing wheel 9 to rotate through the drive end. The squeezing wheel 9 can move the capillary motion carrier 8 by using friction. When squeezing the capillary motion carrier 8, the absorbed liquid can be squeezed out and stored in the collection chamber 10. Then, the rear delivery pump 3 is started to transport the liquid stored in the collection chamber 10 out.

[0048] During use, when a large amount of liquid accumulates in the liquid collection chamber 10, since a third opening 12 is provided on one side of the liquid collection chamber 10, when the liquid collection chamber 10 stores enough liquid and the capillary motion carrier 8 is saturated with liquid, the excess liquid will overflow from the third opening 12, thereby avoiding the problem of excessive accumulation in the liquid collection chamber 10. The cross-section of the capillary motion carrier 8 is circular and its diameter is larger than the width of the third opening 12. The capillary motion carrier 8 itself can isolate the third opening 12, preventing the liquid stored in the liquid collection chamber 10 from overflowing directly through the third opening 12. The excess liquid can only overflow through the capillary motion carrier 8, thereby enabling the liquid collection chamber 10 to store flowing liquid. The material of the capillary motion carrier 8 includes, but is not limited to, high-density sponge.

[0049] In this invention, unless otherwise explicitly specified and limited, the terms “installation,” “connection,” “linking,” “fixing,” etc., should be interpreted broadly.

[0050] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An attitude-adaptive liquid conveying device, characterized in that... The device includes a housing (2) and a cover plate (1), the cover plate (1) and the housing (2) are fixedly connected together, a liquid storage cavity (11) is formed inside the housing (2), and a rear delivery pump (3) and a drive mechanism (4) are provided on one side of the housing (2). One end of the rear delivery pump (3) is connected to a second delivery pipe (6), and the other end of the rear delivery pump (3) is connected to a first delivery pipe (5). The second delivery pipe (6) is connected to the housing (2). The housing (2) is provided with a capillary motion carrier (8), and the liquid storage cavity (11) is provided with a guide limiting component (7) for limiting the capillary motion carrier (8). The housing (2) is provided with a liquid collection cavity (10) at one end near the drive mechanism (4). The drive mechanism (4) is connected to a squeezing dehydration component, which is used to move and squeeze the capillary motion carrier (8). The capillary motion carrier (8) passes through the liquid collection cavity (10).

2. The attitude-adaptive liquid conveying device according to claim 1, characterized in that, The capillary motion carrier (8) is arranged along the inner wall of the housing (2). The guide and limiting component (7) includes multiple positioning blocks. The multiple positioning blocks are arranged sequentially along the inner side of the capillary motion carrier (8) and fixedly installed in the housing (2). The guide and limiting component (7) is connected to the liquid collection cavity (10) to form a ring.

3. The attitude-adaptive liquid conveying device according to claim 1, characterized in that, The housing (2) has an outlet (14) located at the liquid collection chamber (10). One end of the second delivery pipe (6) is inserted into the outlet (14), and the second delivery pipe (6) is connected to the liquid collection chamber (10) through the outlet (14).

4. The attitude-adaptive liquid conveying device according to claim 1, characterized in that, The liquid collection chamber (10) has a first opening (15) on one side and a second opening (16) on the other side. The extrusion desiccant assembly includes an extrusion wheel (9), which is rotatably mounted at the second opening (16). An annular groove is provided on the surface of the extrusion wheel (9). The capillary motion carrier (8) passes through the groove and the first opening (15). The cross-section of the groove is smaller than the cross-section of the capillary motion carrier (8).

5. The attitude-adaptive liquid conveying device according to claim 4, characterized in that, The driving mechanism (4) is a motor. The driving end of the driving mechanism (4) is fixedly connected to a rotating shaft (13). The extrusion wheel (9) is fixedly sleeved on the rotating shaft (13). The end of the rotating shaft (13) is inserted into the guide limiting component (7).

6. The attitude-adaptive liquid delivery device according to claim 1, characterized in that, A third opening (12) is also provided on one side of the liquid collection cavity (10). The cross-section of the capillary motion carrier (8) is circular, and the width of the third opening (12) is smaller than the cross-sectional diameter of the capillary motion carrier (8).

7. The attitude-adaptive liquid delivery device according to claim 1, characterized in that, The rear delivery pump (3) is provided with mounting holes, and screws are inserted through the mounting holes.

8. The attitude-adaptive liquid conveying device according to claim 1, characterized in that, The area of ​​the cover plate (1) is greater than the cross-sectional area of ​​the shell (2). The end of the shell (2) near the drive mechanism (4) is a plane, and the end of the shell (2) away from the drive mechanism (4) is an arc surface. The liquid collection cavity (10) is located at the end of the plane.

9. The attitude-adaptive liquid conveying device according to claim 1, characterized in that, The housing (2) is provided with an infusion port, and a one-way valve is installed on the infusion port.

10. The attitude-adaptive liquid delivery device according to claim 1, characterized in that, The first delivery pipe (5) and the second delivery pipe (6) are both made of silicone.

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