Liquid split charging device based on weight control

Abstract

The utility model relates to a liquid split charging device, in particular to a liquid split charging device based on weight control, which comprises a base and a stand column fixedly mounted on the base. A lifting groove is formed in the base; a limiting block is fixedly mounted in the lifting groove; the base is provided with an object placing table used for placing containers, the stand column is provided with a supporting plate, and a liquid inlet pipe is fixedly installed on the supporting plate. The stand column is provided with an opening and closing plate which is embedded with the liquid inlet pipe in a sliding mode, and the opening and closing plate is fixedly provided with a liquid outlet pipe; the base is provided with a weight sensing mechanism connected with the storage table and an opening and closing mechanism connected with the opening and closing plate. When the weight of the storage table is increased, the storage table can drive the weight sensing mechanism to act, so that the storage table slides in the gravity direction, the opening and closing mechanism is driven to act, the liquid outlet pipe is driven to move towards the liquid inlet pipe, and the liquid outlet pipe is communicated with the liquid inlet pipe.

Description

Technical Field

[0001] The utility model relates to a liquid dispensing device, in particular to a liquid dispensing device based on weight control. Background Art

[0002] Liquid dispensing is a technology for dispensing a large amount of liquid into smaller volumes, which is widely used in industries such as medicine, chemical industry, and food. By dispensing a large amount of liquid into smaller volumes, the quality and volume of the liquid can be controlled more precisely to improve the accuracy of subsequent experimental processing. Common liquid dispensing devices include those based on weight control and those based on volume control.

[0003] The dispensing device based on weight control dispenses a large amount of liquid according to a specific weight. Common dispensing devices based on weight control consist of a feeding mechanism, a weighing mechanism, etc.; that is, when the dispensing device enters the working state, the weighing control system will open the feeding door to start feeding. The feeding process is divided into two levels: fast and slow feeding methods. That is, when the weight of the material approaches the preset value, the feeding speed will gradually slow down to ensure the accuracy of the final dispensing.

[0004] When using a common dispensing device based on weight control, its weighing mechanism is mostly an electronic scale, which is relatively sensitive. During the liquid injection process, if the liquid outlet pipe is higher than the container, liquid will splash in the air, and when inserted into the container, the liquid in the liquid outlet pipe will also interfere with the liquid quality in the container. At this time, it is very difficult for the relatively sensitive electronic scale to react correctly, thus affecting the dispensing effect. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a liquid dispensing device based on weight control to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A liquid dispensing device based on weight control includes a base and a column fixedly installed on the base; a lifting groove is opened on the base; a limiting block is fixedly installed in the lifting groove; a placement table for placing a container is arranged on the base, and the placement table can slide in the lifting groove;

[0008] A support plate is arranged on the column, and a liquid inlet pipe is fixedly installed on the support plate; a switching plate that is slidably fitted with the liquid inlet pipe is arranged on the column, and a liquid outlet pipe is fixedly installed on the switching plate;

[0009] A weight sensing mechanism connected to the placement table and a switching mechanism connected to the switching plate are arranged on the base;

[0010] Wherein, when the weight of the placement table increases, the placement table can drive the weight sensing mechanism to act, so that the placement table slides along the direction of gravity, thereby driving the opening and closing mechanism to act. The liquid outlet pipe is driven by the opening and closing plate to move towards the liquid inlet pipe, so that the liquid outlet pipe is communicated with the liquid inlet pipe.

[0011] The liquid dispensing device based on weight control as described above: The weight sensing mechanism includes a control console slidably arranged in the lifting groove. A second telescopic sleeve is fixedly installed on the control console; A lifting table is slidably installed in the lifting groove; A second telescopic column slidably fitted with the second telescopic sleeve is fixedly installed on the lifting table. A second spring fixedly connected to the control console is fixedly installed on the lifting table; A first telescopic sleeve is fixedly installed on the lifting table. A first telescopic column fixedly connected to the placement table is slidably fitted in the first telescopic sleeve. A first spring fixedly connected to the placement table is fixedly installed on the lifting table.

[0012] The liquid dispensing device based on weight control as described above: The opening and closing mechanism includes a second chute and a third chute opened on the column, and the two are communicated with each other; A control board is slidably fitted in the third chute. A third telescopic sleeve slidably fitted with the second chute is fixedly installed on the control board. A third telescopic column fixedly connected to the opening and closing plate is slidably fitted in the third telescopic sleeve; A control notch is opened on the control board. A protruding column fixedly connected to the placement table is slidably fitted in the control notch.

[0013] The liquid dispensing device based on weight control as described above: The control notch includes a first notch, a second notch, a third notch and a fourth notch that are communicated with each other; Wherein the first notch and the third notch are vertical notches, and the second notch and the fourth notch are inclined downward notches and inclined upward notches respectively; A limiting plate is rotatably installed on the control board and a limiting column is fixedly installed.

[0014] The liquid dispensing device based on weight control as described above: A first chute is opened on the column. A second lead screw is rotatably installed in the first chute. An internal thread sleeve is threadedly connected to the second lead screw. The internal thread sleeve is fixedly connected to the support plate; And the support plate is slidably fitted with the first chute.

[0015] The liquid dispensing device based on weight control as described above: An internal thread block is rotatably installed on the control board. A first lead screw threadedly connected to the internal thread block and fixedly connected to the base is threadedly connected to the internal thread block.

[0016] The liquid dispensing device based on weight control as described above: An operation opening is opened on the base. The operation opening is communicated with the lifting groove.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows: By controlling the action of the opening and closing mechanism through the weight change on the placing table, the liquid volume with the required weight can be obtained more accurately. Since the placing table changes its position according to the change of the container and the liquid volume in the container, and the action of the opening and closing mechanism is controlled by the position change of the placing table, a small change in the liquid weight in the container has little impact on the entire sub-packaging result, thus greatly improving the accuracy rate of the subsequent process result; By rotating the internal thread block, the difficulty of the placing table driving the lifting table close to the control console is changed, and the liquid weight for stopping liquid injection into the container is changed, so as to improve the application range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a liquid sub-packaging device based on weight control.

[0019] Figure 2 is a schematic structural diagram of another perspective of a liquid sub-packaging device based on weight control.

[0020] Figure 3 is Figure 1 a schematic structural diagram of the sectional perspective of

[0021] Figure 4 is Figure 3 a schematic structural diagram of the part A in

[0022] Figure 5 is a schematic structural diagram of the base and the column in a liquid sub-packaging device based on weight control.

[0023] Figure 6 is a schematic structural diagram of the lifting table and the control console in a liquid sub-packaging device based on weight control.

[0024] Figure 7 is a schematic structural diagram of the placing table and the control board in a liquid sub-packaging device based on weight control.

[0025] Figure 8 is Figure 7 a schematic structural diagram of the part B in

[0026] In the figure: 1. Base; 101. Limit block; 102. Lifting groove;

[0027] 2. Column; 201. First sliding groove; 202. Second sliding groove; 203. Third sliding groove;

[0028] 3. Placing table; 301. First telescopic column; 302. Protruding column;

[0029] 4. First spring;

[0030] 5. Lifting table; 501. First telescopic sleeve; 502. Second telescopic column;

[0031] 6. Second spring;

[0032] 7. Console; 701. Second telescopic sleeve;

[0033] 8. First lead screw;

[0034] 9. Internal thread block;

[0035] 10. Second lead screw;

[0036] 11. Internal thread sleeve;

[0037] 12. Support plate; 1201. Liquid inlet pipe;

[0038] 13. Opening and closing plate; 1301. Liquid outlet pipe; 1302. Third telescopic column;

[0039] 14. Control board; 1401. Third telescopic sleeve;

[0040] 1402. First notch; 1403. Second notch; 1404. Third notch; 1405. Fourth notch; 1406. Limiting plate; 1407. Limiting column. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0042] Please refer to Figures 1 to 8 , as an embodiment of the present invention, the liquid dispensing device based on weight control includes a base 1 and a column 2 fixedly installed on the base 1; a lifting groove 102 is opened on the base 1; a limiting block 101 is fixedly installed in the lifting groove 102; a placing table 3 for placing a container is provided on the base 1, and the placing table 3 can slide in the lifting groove 102;

[0043] A support plate 12 is provided on the column 2, and a liquid inlet pipe 1201 is fixedly installed on the support plate 12; an opening and closing plate 13 slidably fitted with the liquid inlet pipe 1201 is provided on the column 2, and a liquid outlet pipe 1301 is fixedly installed on the opening and closing plate 13;

[0044] A weight sensing mechanism connected to the placing table 3 and an opening and closing mechanism connected to the opening and closing plate 13 are provided on the base 1;

[0045] Wherein, when the weight of the placement table 3 increases, the placement table 3 can drive the weight sensing mechanism to act, so that the placement table 3 slides along the direction of gravity, thereby driving the opening and closing mechanism to act. The liquid outlet pipe 1301 is driven by the opening and closing plate 13 to move towards the liquid inlet pipe 1201, so that the liquid outlet pipe 1301 is communicated with the liquid inlet pipe 1201.

[0046] In this embodiment, first, the liquid container to be separated is communicated with the liquid inlet pipe 1201, and then the empty container is placed on the placement table 3. Since the weight on the placement table 3 changes due to the addition of the container, the gravity sensing mechanism is driven to act, and the placement table 3 slides towards the lifting groove 102. At this time, the opening and closing mechanism is driven to act, and the liquid outlet pipe 1301 is driven by the opening and closing plate 13 to slide towards the liquid inlet pipe 1201, so that the liquid outlet pipe 1301 is communicated with the liquid inlet pipe 1201, and the liquid can flow into the container from the liquid outlet pipe 1301.

[0047] As the liquid in the container increases, the weight on the placement table 3 will gradually increase, thereby driving the gravity sensing mechanism to continue to act, so that the placement table 3 continues to slide inward in the lifting groove 102. During this process, the liquid outlet pipe 1301 and the liquid inlet pipe 1201 will remain in a conductive state.

[0048] When the liquid mass in the container is about to reach the set weight, the placement table 3 will continue to drive the gravity sensing mechanism to act and drive the opening and closing mechanism to act, so as to drive the liquid outlet pipe 1301 to gradually move away from the liquid inlet pipe 1201 through the opening and closing plate 13, so that the two are disconnected from the conductive state, so that the liquid in the container will not increase. After stabilization, the container is taken out, and the placement table 3 will reset under the action of the gravity sensing mechanism. The opening and closing mechanism does not act during this process.

[0049] By controlling the action of the opening and closing mechanism through the weight change on the placement table 3, the liquid volume with the required weight can be obtained more accurately. Since the placement table 3 changes its position according to the change of the container and the liquid volume in the container, and the action of the opening and closing mechanism is controlled by the position change of the placement table 3, the small change of the liquid weight in the container has little impact on the whole sub-packaging result, thus greatly improving the accuracy of the subsequent process result.

[0050] As a further solution of the present utility model, the weight sensing mechanism includes a console 7 slidably disposed in the lifting groove 102, and a second telescopic sleeve 701 is fixedly installed on the console 7; a lifting table 5 is slidably installed in the lifting groove 102; a second telescopic column 502 slidably fitted with the second telescopic sleeve 701 is fixedly installed on the lifting table 5, and a second spring 6 fixedly connected to the console 7 is fixedly installed on the lifting table 5; a first telescopic sleeve 501 is fixedly installed on the lifting table 5, and a first telescopic column 301 fixedly connected to the placement table 3 is slidably fitted in the first telescopic sleeve 501, and a first spring 4 fixedly connected to the placement table 3 is fixedly installed on the lifting table 5.

[0051] In this embodiment, the spring constant of the second spring 6 is greater than that of the first spring 4;

[0052] When an empty container is placed on the placement table 3, the mass of the placement table 3 will increase. Under the action of gravity, the placement table 3 drives the first telescopic column 301 to slide inward in the first telescopic sleeve 501, the first spring 4 will be compressed, and the placement table 3 will move closer to the lifting table 5. During the approaching process, the placement table 3 will drive the opening and closing mechanism to act, and drive the liquid outlet pipe 1301 to approach the liquid inlet pipe 1201 through the opening and closing plate 13, so that the two are conducted to inject liquid into the container;

[0053] As the liquid in the container increases, the placement table 3 will continue to move closer to the lifting table 5. After the first spring 4 is completely compressed, the placement table 3 will drive the lifting table 5 to slide closer to the console 7. During this process, the second telescopic column 502 will slide inward in the second telescopic sleeve 701, and the second spring 6 will be compressed; at the same time, the liquid outlet pipe 1301 and the liquid inlet pipe 1201 remain in a connected state;

[0054] When the weight of the liquid in the container is about to reach the designed weight, the liquid will continue to be injected into the container, and the placement table 3 and the lifting table 5 will continue to move closer to the console 7. During this process, the placement table 3 will drive the opening and closing mechanism to act, and drive the liquid outlet pipe 1301 to move away from the liquid inlet pipe 1201 through the opening and closing plate 13, so that the two are disconnected; after the liquid in the container is stable, the gravity sensing mechanism will be in a force balance state, and the position of the placement table 3 will not change. Then the container is taken out, and at this time the sensing mechanism will drive the placement table 3 to reset, and the opening and closing mechanism will not act during the reset process.

[0055] As a further solution of the present utility model, the opening and closing mechanism includes a second chute 202 and a third chute 203 formed in the column 2, and the two are in communication with each other; a control board 14 is slidably fitted in the third chute 203, and a third telescopic sleeve 1401 slidably fitted with the second chute 202 is fixedly installed on the control board 14, and a third telescopic column 1302 fixedly connected to the opening and closing board 13 is slidably fitted in the third telescopic sleeve 1401; a control notch is formed in the control board 14, and a protruding column 302 fixedly connected to the placing table 3 is slidably fitted in the control notch.

[0056] As a further solution of the present utility model, the control notch includes a first notch 1402, a second notch 1403, a third notch 1404 and a fourth notch 1405 which are in communication with each other; wherein the first notch 1402 and the third notch 1404 are vertical notches, and the second notch 1403 and the fourth notch 1405 are inclined downward notches and inclined upward notches respectively; a limiting plate 1406 is rotatably installed on the control board 14 and a limiting column 1407 is fixedly installed.

[0057] In this embodiment, the limiting plate 1406 and the limiting column 1407 are located on both sides of the first notch 1402, wherein the limiting plate 1406 is located below the second notch 1403, and one side of the limiting plate 1406 is collinear with the inner wall of the second notch 1403. A torsion spring is provided in the limiting plate 1406. And in the initial position, the limiting plate 1406 abuts against the limiting column 1407.

[0058] After an empty container is placed on the placing table 3, the placing table 3 will move closer to the lifting table 5. During this process, the protruding column 302 will slide downward from the first notch 1402, and after abutting against the limiting plate 1406, it will enter the second notch 1403 and slide until it slides to the communication part of the second notch 1403 and the third notch 1404. Since the second notch 1403 is inclined downward and the third notch 1404 is close to the placing table 3, under the sliding fit of the protruding column 302 and the second notch 1403, the control board 14 can be driven to slide in the third chute 203 in a direction away from the placing table 3, so as to drive the third telescopic column 1302 to slide synchronously in the second chute 202 through the third telescopic sleeve 1401, thereby driving the liquid outlet pipe 1301 and the liquid inlet pipe 1201 to be conducted through the opening and closing board 13, so that the liquid can be injected into the container.

[0059] As the liquid in the container increases, the placing table 3 will drive the lifting table 5 to move closer to the control console 7. At this time, the protruding column 302 will slide in the third notch 1404, and since the third notch 1404 is a vertical notch, the position of the control board 14 remains unchanged. The liquid outlet pipe 1301 and the liquid inlet pipe 1201 remain in a conducting state.

[0060] As the placing table 3 and the lifting table 5 continuously approach the control console 7, the protruding column 302 will slide from the third notch 1404 into the fourth notch 1405. At this time, the weight of the liquid in the container is about to reach the designed weight; the liquid will continue to be injected into the container, causing the protruding column 302 to slide in the fourth notch 1405 until the protruding column 302 reaches the connection between the fourth notch 1405 and the first notch 1402. Since the fourth notch 1405 is inclined upward, the control board 14 slides towards the placing table 3 in the third sliding groove 203, thereby driving the liquid outlet pipe 1301 to slide away from the liquid inlet pipe 1201 through the opening and closing board 13 to disconnect their conduction; the liquid will no longer enter the liquid outlet pipe 1301 from the liquid inlet pipe 1201; after the liquid in the container stabilizes, the weight of the liquid in the container is the designed weight.

[0061] Take out the container. Under the elastic force of the first spring 4 and the second spring 6, the placing table 3 will reset. At this time, the protruding column 302 will slide in the first notch 1402 and, when it reaches the connection between the first notch 1402 and the second notch 1403, push the limit plate 1406 to rotate, causing the limit plate 1406 to separate from the limit post 1407, so that the protruding column 302 can reset to the top of the first notch 1402; after the protruding column 302 passes over the limit plate 1406, the torsion spring will drive the limit plate 1406 to reset.

[0062] By controlling the action of the opening and closing mechanism through the weight change on the placing table 3, the liquid volume with the required weight can be obtained more accurately. Since the placing table 3 changes its position according to the change of the container and the liquid volume in the container, and the action of the opening and closing mechanism is controlled by the position change of the placing table 3, a small change in the liquid weight in the container has little impact on the entire sub-packaging result, thus greatly improving the accuracy rate of the subsequent process result.

[0063] As a further solution of the present invention, a first sliding groove 201 is opened on the column 2, a second lead screw 10 is rotatably installed in the first sliding groove 201, an internally threaded sleeve 11 is threadedly connected to the second lead screw 10, and the internally threaded sleeve 11 is fixedly connected to the support plate 12; and the support plate 12 is slidably fitted with the first sliding groove 201.

[0064] In this embodiment, rotate the second lead screw 10. Through threaded engagement, drive the internally threaded sleeve 11 to move closer to or away from the placement table 3 within the first chute 201, thereby reducing or increasing the distance between the support plate 12 and the placement table 3; drive the opening and closing plate 13 to move closer to or away from the placement table 3 through the liquid inlet pipe 1201, and the third telescopic column 1302 will slide inward or outward within the third telescopic sleeve 1401; thereby reducing or increasing the distance between the liquid outlet pipe 1301 and the placement table 3, and thus reducing or increasing the liquid injection height for injecting liquid into the container. In actual operation, according to the size of the container, rotate the second lead screw 10 to adjust the liquid injection height, so as to avoid liquid splashing or interference between the liquid outlet pipe 1301 and the container.

[0065] As a further solution of the present utility model, an internally threaded block 9 is rotatably installed on the control console 7, and a first lead screw 8 fixedly connected to the base 1 is threadedly connected to the internally threaded block 9.

[0066] In this embodiment, rotate the internally threaded block 9. Through threaded engagement with the first lead screw 8, drive the internally threaded block 9 to move closer to the lifting platform 5, thereby driving the control console 7 to move closer to the lifting platform 5, and the compression amount of the second spring 6 increases, thus increasing the difficulty for the placement table 3 to drive the lifting platform 5 to move closer to the control console 7, thereby changing the liquid weight at which liquid injection into the container stops, and thus improving the application range of the device.

[0067] As a further solution of the present utility model, an operation opening is provided in the base 1, and the operation opening communicates with the lifting groove 102.

[0068] In this embodiment, the operation opening communicates with the lifting groove 102, which facilitates the maintenance of the device by the user and also provides convenience for rotating the internally threaded block 9.

[0069] The above embodiments are exemplary rather than restrictive. Therefore, without departing from the spirit or basic features of the present utility model, all technical solutions that can implement the present utility model in other specific forms are included in the present utility model.

Claims

1. A liquid dispensing device based on weight control, comprising a base (1) and a column (2) fixedly installed on the base (1); a lifting groove (102) is formed in the base (1); a limiting block (101) is fixedly installed in the lifting groove (102); a placement table (3) for placing a container is arranged on the base (1), and the placement table (3) can slide in the lifting groove (102). It is characterized in that A support plate (12) is arranged on the column (2), and a liquid inlet pipe (1201) is fixedly installed on the support plate (12); a switching plate (13) slidably fitted with the liquid inlet pipe (1201) is arranged on the column (2), and a liquid outlet pipe (1301) is fixedly installed on the switching plate (13). A weight sensing mechanism connected to the placement table (3) and a switching mechanism connected to the switching plate (13) are arranged on the base (1). Wherein, when the weight of the placement table (3) increases, the placement table (3) can drive the weight sensing mechanism to act, so that the placement table (3) slides along the direction of gravity, thereby driving the switching mechanism to act, and driving the liquid outlet pipe (1301) to move towards the liquid inlet pipe (1201) through the switching plate (13), so that the liquid outlet pipe (1301) is communicated with the liquid inlet pipe (1201).

2. The liquid dispensing device based on weight control according to claim 1, wherein The weight sensing mechanism includes a control console (7) slidably arranged in the lifting groove (102), and a second telescopic sleeve (701) is fixedly installed on the control console (7); a lifting table (5) is slidably installed in the lifting groove (102); a second telescopic column (502) slidably fitted with the second telescopic sleeve (701) is fixedly installed on the lifting table (5), and a second spring (6) fixedly connected to the control console (7) is fixedly installed on the lifting table (5); a first telescopic sleeve (501) is fixedly installed on the lifting table (5), a first telescopic column (301) fixedly connected to the placement table (3) is slidably fitted in the first telescopic sleeve (501), and a first spring (4) fixedly connected to the placement table (3) is fixedly installed on the lifting table (5).

3. The liquid dispensing device based on weight control according to claim 2, wherein, The switching mechanism includes a second sliding groove (202) and a third sliding groove (203) formed in the column (2), and the two are communicated with each other; a control plate (14) is slidably fitted in the third sliding groove (203), a third telescopic sleeve (1401) slidably fitted with the second sliding groove (202) is fixedly installed on the control plate (14), and a third telescopic column (1302) fixedly connected to the switching plate (13) is slidably fitted in the third telescopic sleeve (1401); a control notch is formed in the control plate (14), and a protruding column (302) fixedly connected to the placement table (3) is slidably fitted in the control notch.

4. The liquid dispensing device based on weight control according to claim 3, wherein, The control notch includes a first notch (1402), a second notch (1403), a third notch (1404) and a fourth notch (1405) that are interconnected; wherein the first notch (1402) and the third notch (1404) are vertical notches, and the second notch (1403) and the fourth notch (1405) are an inclined downward notch and an inclined upward notch respectively; a limiting plate (1406) is rotatably installed on the control plate (14), and a limiting post (1407) is fixedly installed.

5. The liquid dispensing device based on weight control according to claim 4, characterized in that, A first sliding groove (201) is formed in the column (2), a second lead screw (10) is rotatably installed in the first sliding groove (201), an internally threaded sleeve (11) is threadedly connected to the second lead screw (10), and the internally threaded sleeve (11) is fixedly connected to the support plate (12); and the support plate (12) is slidably fitted with the first sliding groove (201).

6. The liquid dispensing device based on weight control according to claim 2, wherein, An internally threaded block (9) is rotatably installed on the control console (7), and a first lead screw (8) fixedly connected to the base (1) is threadedly connected to the internally threaded block (9).

7. A liquid dispensing device based on weight control according to claim 1, characterized in that, The base (1) is provided with an operation opening, and the operation opening communicates with the lifting groove (102).

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