Self-control liquid feeding device capable of conveniently adjusting liquid feeding amount

Abstract

The utility model discloses a self-control liquid feeding device capable of conveniently adjusting the liquid feeding amount, and relates to the technical field of liquid feeding devices. According to the technical scheme, the device is characterized by comprising a shell, a liquid storage bag and a pipeline assembly, the liquid storage bag and the pipeline assembly are arranged in the shell, a liquid feeding assembly is arranged on the surface of the shell, a limiting ring is arranged on the surface of the shell, the liquid feeding assembly comprises a sliding plate slidably connected into the limiting ring, and a vertical connecting pipe is fixedly connected to the lower surface of the sliding plate; a sliding pipe is arranged on the connecting pipe in a sleeving and sliding mode, a pressing plate located above the liquid storage bag is arranged at the bottom end of the sliding pipe, the device further comprises an adjusting assembly used for adjusting the relative height position of the sliding pipe and the connecting pipe, a through groove allowing the connecting pipe to penetrate through and be in sliding connection is formed in the surface of the shell, and an abutting ring is arranged at the bottom of the inner wall of the through groove; the connecting pipe is sleeved with a spring, and the two ends of the spring are connected to the lower surface of the sliding plate and the upper surface of the abutting ring correspondingly. The utility model aims to provide the self-control liquid feeding device which is convenient for adjusting the liquid feeding amount.

Description

Technical Field

[0001] The utility model relates to a liquid feeding device, and more specifically, to a self-controlled liquid feeding device which is convenient for adjusting the liquid feeding amount. Background Art

[0002] PCA (Patient Conteolled Analgesia) is a self-controlled liquid feeding device for disposable infusion pumps. During the infusion of liquid medicine, some patients may occasionally feel that the dosage is insufficient in a short period of time because the set flow rate just meets the medication needs. Therefore, by squeezing the micro-liquid reservoir in the PCA component, the liquid in the micro-liquid reservoir is squeezed out to achieve the infusion of additional doses, so as to meet the temporary increase in medication needs in the short term.

[0003] When adding medicine, the amount of medicine squeezed out by the existing automatic drug delivery device is usually fixed, and the amount of medicine added at one time cannot be adjusted according to the actual situation.

[0004] Therefore, a new technical solution is urgently needed to solve the above technical problems. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a self-controlled liquid feeding device which is convenient for adjusting the liquid feeding amount.

[0006] The above-mentioned technical purpose of the utility model is achieved through the following technical scheme: a self-controlled liquid feeding device that is easy to adjust the liquid feeding amount, including a shell, a liquid storage bag and a pipeline assembly arranged in the shell, a liquid feeding assembly is arranged on the surface of the shell, a limiting ring is arranged on the surface of the shell, the liquid feeding assembly includes a sliding plate slidably connected to the limiting ring, a vertical connecting tube is fixedly connected to the lower surface of the sliding plate, a sliding tube is sleeved on and slidably connected to the connecting tube, a pressure plate located above the liquid storage bag is arranged at the bottom of the sliding tube, and also includes an adjusting assembly for adjusting the relative height position of the sliding tube and the connecting tube, a through groove is opened on the surface of the shell for the connecting tube to pass through and be slidably connected, an abutment ring is arranged on the bottom of the inner wall of the through groove, a spring is sleeved on the connecting tube, and two ends of the spring are respectively connected to the lower surface of the sliding plate and the upper surface of the abutment ring.

[0007] By adopting the above technical solution, when performing the drug administration operation, by pressing the sliding plate, the spring is compressed and the pressing plate is pressed on the surface of the liquid storage bag. Under the action of its pressure, the liquid in the liquid storage bag is discharged through the pipeline assembly to realize the liquid administration operation. According to actual needs, the height position of the sliding tube relative to the connecting tube can be adjusted by adjusting the assembly, thereby adjusting the initial height position of the pressing plate relative to the liquid storage bag. When pressing the sliding plate, since the height position of the pressing plate remains unchanged after pressing, the height position when it is pressed to the bottom is also different, so that different amounts of liquid can be squeezed out to achieve the adjustment of the liquid administration amount.

[0008] The utility model is further configured as follows: the adjustment component includes an adjustment plate arranged on the surface of the sliding plate, an adjustment rod is arranged at the bottom of the adjustment plate, the sliding plate is provided with a through groove for the adjustment rod to pass through and rotatably connected, the adjustment rod is provided with a positioning ring along its circumferential side wall, the positioning ring abuts against the lower surface of the sliding plate, the circumferential side wall of the adjustment rod is provided with an external thread, and the inner wall of the sliding tube is provided with an internal thread matching the external thread.

[0009] The utility model is further configured as follows: a vertical limiting strip is arranged on the outer side wall of the sliding tube, and a limiting groove for sliding connection of the limiting strip is opened on the inner wall of the connecting tube.

[0010] The utility model is further configured as follows: a groove for the adjusting plate to be embedded is provided on the surface of the sliding plate, and a horizontally arranged adjusting groove is provided on the surface of the adjusting plate.

[0011] The utility model is further configured as follows: the surface of the sliding plate is provided with scales along its circumferential direction, and the surface of the adjusting plate is provided at an alignment triangle.

[0012] The utility model is further configured as follows: a dosing valve connected to the pipeline assembly is arranged at one end of the shell.

[0013] The utility model has the following beneficial effects: when performing a drug administration operation, by pressing the sliding plate, the spring is compressed and the pressing plate is pressed against the surface of the liquid storage bag. Under the action of its pressure, the liquid in the liquid storage bag is discharged through the pipeline component to realize the liquid administration operation, and according to actual needs, the height position of the sliding tube relative to the connecting tube can be adjusted by adjusting the component, thereby adjusting the initial height position of the pressing plate relative to the liquid storage bag. When pressing the sliding plate, since the height position of the pressing plate remains unchanged after being pressed, the height position when it is pressed to the bottom is also different, so that different amounts of liquid can be squeezed out to realize the adjustment of the liquid administration amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic cross-sectional structural diagram of this embodiment;

[0015] Figure 2Schematic diagram of the internal structure of this embodiment;

[0016] Figure 3 This is a schematic diagram of the exploded structure of the regulating assembly of this embodiment.

[0017] Description of the drawings: 1. Shell; 2. Liquid storage bag; 3. Pipe assembly; 4. Limiting ring; 5. Sliding plate; 6. Connecting tube; 7. Sliding tube; 8. Pressing plate; 9. Abutting ring; 10. Spring; 11. Adjusting plate; 12. Adjusting rod; 13. Positioning ring; 14. External thread; 15. Internal thread; 16. Limiting strip; 17. Limiting groove; 18. Adjusting groove; 19. Scale; 20. Alignment triangle; 21. Dosing valve. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0019] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0020] As shown in the figure, a self-controlled liquid feeding device which is convenient for adjusting the liquid feeding amount comprises a shell 1, a liquid storage bag 2 and a pipeline assembly 3 arranged in the shell 1, a liquid feeding assembly is arranged on the surface of the shell 1, a limiting ring 4 is arranged on the surface of the shell 1, the liquid feeding assembly comprises a sliding plate 5 which is slidably connected to the limiting ring 4 in the vertical direction, a vertical connecting tube 6 is fixedly connected to the lower surface of the sliding plate 5, a sliding tube 7 is sleeved on and slidably connected to the connecting tube 6, a pressing plate 8 located above the liquid storage bag 2 is arranged at the bottom of the sliding tube 7, and also comprises an adjusting assembly for adjusting the relative height position of the sliding tube 7 and the connecting tube 6, a through groove is opened on the surface of the shell 1 for the connecting tube 6 to pass through and be slidably connected, an abutment ring 9 is arranged on the bottom of the inner wall of the through groove, a spring 10 is sleeved on the connecting tube 6, and the two ends of the spring 10 are respectively connected to the lower surface of the sliding plate 5 and the upper surface of the abutment ring 9.

[0021] When performing the drug administration operation, by pressing the sliding plate 5, the spring 10 is compressed and the pressing plate 8 is pressed on the surface of the liquid storage bag 2. Under the action of its pressure, the liquid in the liquid storage bag 2 is discharged through the pipeline assembly 3 to realize the liquid administration operation. According to actual needs, the height position of the sliding tube 7 relative to the connecting tube 6 can be adjusted by adjusting the assembly, so as to adjust the initial height position of the pressing plate 8 relative to the liquid storage bag 2. When pressing the sliding plate 5, since the height position of the pressing plate 8 remains unchanged after pressing, the height position when it is pressed to the bottom is also different, so that different amounts of liquid can be squeezed out to achieve the adjustment of the liquid administration amount.

[0022] The adjustment assembly includes an adjustment plate 11 arranged on the surface of the sliding plate 5, an adjustment rod 12 is arranged at the bottom of the adjustment plate 11, the sliding plate 5 is provided with a through slot for the adjustment rod 12 to pass through and be rotatably connected, the adjustment rod 12 is provided with a positioning ring 13 along its circumferential side wall, the positioning ring 13 abuts against the lower surface of the sliding plate 5, the circumferential side wall of the adjustment rod 12 is provided with an external thread 14, and the inner wall of the sliding tube 7 is provided with an internal thread 15 matched with the external thread 14. The outer side wall of the sliding tube 7 is provided with a vertical limit strip 16, and the inner wall of the connecting tube 6 is provided with a limit groove 17 for the limit strip 16 to be slidably connected.

[0023] By rotating the adjusting plate 11 and the adjusting rod 12, under the action of the external thread 14 and the internal thread 15, the sliding tube 7 is driven to rise and fall in the connecting tube 6 to adjust the height position of the pressing plate 8, and the limiting strip 16 and the limiting groove are used to prevent the sliding tube 7 and the pressing plate 8 from rotating, thereby affecting the adjustment of their height positions.

[0024] The surface of the sliding plate 5 is provided with a groove for the adjustment plate 11 to be embedded, and the surface of the adjustment plate 11 is provided with a horizontally arranged adjustment groove 18, through which the adjustment groove 18 can be used to perform rotational adjustment using a tool. The surface of the sliding plate 5 is provided with a scale 19 along its circumferential direction, and the surface of the adjustment plate 11 is provided with an alignment triangle 20, so as to observe the rotation angle of the adjustment plate 11 and the corresponding liquid supply amount.

[0025] One end of the housing 1 is provided with a dosing valve 21 connected to the pipeline assembly 3 to facilitate dosing at a later stage.

[0026] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. An automatic liquid feeding device for adjusting the liquid feeding amount, comprising a housing (1), a liquid storage bag (2) and a pipeline assembly (3) arranged in the housing (1), characterized in that: The surface of the shell (1) is provided with a liquid feeding component, and the surface of the shell (1) is provided with a limit ring (4). The liquid feeding component includes a sliding plate (5) slidably connected to the limit ring (4), and the lower surface of the sliding plate (5) is fixedly connected with a vertical connecting tube (6). The connecting tube (6) is sleeved with and slidably connected with a sliding tube (7), and the bottom end of the sliding tube (7) is provided with a pressure plate (8) located above the liquid storage bag (2), and also includes an adjustment component for adjusting the relative height position of the sliding tube (7) and the connecting tube (6). The surface of the shell (1) is provided with a through groove for the connecting tube (6) to pass through and slidably connect, and the bottom of the inner wall of the through groove is provided with an abutment ring (9), and the connecting tube (6) is sleeved with a spring (10), and the two ends of the spring (10) are respectively connected to the lower surface of the sliding plate (5) and the upper surface of the abutment ring (9).

2. The automatic liquid feeding device for adjusting the liquid feeding amount according to claim 1, characterized in that: The adjustment assembly comprises an adjustment plate (11) arranged on the surface of a sliding plate (5); an adjustment rod (12) is arranged at the bottom of the adjustment plate (11); the sliding plate (5) is provided with a through groove for the adjustment rod (12) to pass through and be rotatably connected; a positioning ring (13) is arranged along the circumferential side wall of the adjustment rod (12); the positioning ring (13) abuts against the lower surface of the sliding plate (5); an external thread (14) is arranged on the circumferential side wall of the adjustment rod (12); and an internal thread (15) matched with the external thread is arranged on the inner wall of the sliding tube (7).

3. The automatic liquid feeding device for adjusting the liquid feeding amount according to claim 2, characterized in that: The outer side wall of the sliding tube (7) is provided with a vertical limiting strip (16), and the inner wall of the connecting tube (6) is provided with a limiting groove (17) for sliding connection of the limiting strip (16).

4. The automatic liquid feeding device for facilitating adjustment of the liquid feeding amount according to claim 3, characterized in that: The surface of the sliding plate (5) is provided with a groove for the adjustment plate (11) to be embedded, and the surface of the adjustment plate (11) is provided with a horizontally arranged adjustment groove (18).

5. The automatic liquid feeding device for adjusting the liquid feeding amount according to claim 4, characterized in that: The surface of the sliding plate (5) is provided with scales (19) along its circumferential direction, and the surface of the adjustment plate (11) is provided on an alignment triangle (20).

6. The automatic liquid feeding device for facilitating adjustment of the liquid feeding amount according to claim 1, characterized in that: One end of the housing (1) is provided with a dosing valve (21) connected to the pipeline assembly (3).

Images