CN219313092U - Liquid medicine conveying system - Google Patents

Abstract

The utility model discloses a liquid medicine conveying system, which comprises a branch pipeline, a converging pipeline, a centrifugal pump, a main conveying pipeline and a liquid inlet bent pipe which are sequentially communicated; a backflow branch pipe is connected between the converging pipeline and the main conveying pipeline, and an actuator for adjusting the flow of the liquid medicine is arranged on the main conveying pipeline; wherein the branch pipeline is used for being abutted with a liquid outlet of the liquid tank; the liquid inlet bent pipe is arranged in a feed box of the filling machine, and a liquid outlet of the liquid inlet bent pipe faces to the inner side wall of the distal end of the feed box. According to the utility model, by additionally arranging the reflux branch pipe and improving the liquid inlet pipe structure, the generation of medicine foam is effectively reduced when the medicine liquid is conveyed to the material box of the filling machine, so that the problems of low actual working efficiency and high reject ratio of the filling finished product of the filling machine caused by a large quantity of medicine foam in the material box are solved, and good economic benefits of enterprises are ensured to a certain extent.

Description

Liquid medicine conveying system

Technical Field

The utility model relates to filling of liquid medicine, in particular to a liquid medicine conveying system.

Background

When the drug enterprise produces the traditional Chinese medicine oral liquid, links such as liquid preparation and filling are needed, namely, corresponding doses of concentrated liquid, water, additive and the like are put into a liquid preparation tank for mixing and stirring in different time phases and different temperature environments according to the requirements of a production process, and then the liquid medicine is conveyed into a filling machine material box for filling after the liquid preparation is completed.

In the prior art, a conveying system for conveying a liquid medicine from a liquid preparation tank to a filling machine tank generally comprises a pipeline communicated with the liquid preparation tank and the filling machine tank, a centrifugal pump arranged on the pipeline and used for pumping the liquid medicine, and an actuator used for adjusting the flow of the liquid medicine in the pipeline, wherein a liquid outlet of the pipeline arranged in the filling machine tank is generally vertically arranged downwards and faces the bottom of the filling machine tank. When the liquid medicine filling machine works, the liquid medicine capacity is monitored by the floating ball liquid level switch in the material box of the liquid filling machine, when the liquid medicine in the material box is insufficient, the floating ball liquid level switch transmits signals to the controller, and the controller controls the centrifugal pump and the actuator to act so as to pump the liquid medicine into the material box; after the liquid medicine in the feed box is filled, the floating ball liquid level switch box controller transmits signals, and the centrifugal pump and the actuator are controlled by the controller to be closed.

However, the conveying system in the prior art has the following problems: when the liquid medicine is pumped, the pressure of the liquid medicine in the pipeline is high, and the liquid medicine can directly impact the bottom of the material box of the filling machine after being output by the liquid outlet, so that the liquid medicine splashes and a large amount of medicine foam is generated in the material box. The generated medicine foam can influence the floating ball liquid level switch, so that the floating ball liquid level switch transmits signals for closing the centrifugal pump and the actuator to the controller in advance, and a small amount of medicine liquid can only be filled in the material box, so that the filling machine performs short-time filling operation, and after the medicine foam is eliminated, the floating ball liquid level switch can monitor that the medicine liquid in the material box is insufficient and transmits signals to the controller to enable the centrifugal pump and the actuator to act again. The process is frequently reciprocated, the filling machine can only carry out short filling work each time, the working efficiency of the filling machine is seriously influenced, and medicine foam existing in the material box can be filled into the packaging bottle by the filling machine, so that the medicine foam overflows from the packaging bottle during filling, or the product is unqualified because the medicine foam cannot be filled with accurate liquid medicine in the packaging bottle.

In addition, the pressure of the liquid medicine in the pipeline is large, the pressure impact can be caused to the actuator, and the service life of the actuator can be seriously shortened due to the fact that the actuator is frequently started and stopped.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model aims to provide a liquid medicine conveying system so as to reduce the pumping pressure of liquid medicine and reduce the generation of medicine foam in a filling machine feed box.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a liquid medicine conveying system comprises a branch pipeline, a converging pipeline, a centrifugal pump, a main conveying pipeline and a liquid inlet bent pipe which are sequentially communicated; a backflow branch pipe is connected between the converging pipeline and the main conveying pipeline, and an actuator for adjusting the flow of the liquid medicine is arranged on the main conveying pipeline;

wherein the branch pipeline is used for being abutted with a liquid outlet of the liquid tank; the liquid inlet bent pipe is arranged in a feed box of the filling machine, and a liquid outlet of the liquid inlet bent pipe faces to the inner side wall of the distal end of the feed box.

As the limitation of the utility model, a reticular cover body is arranged at the position of the liquid outlet of the liquid inlet bent pipe.

As a further definition of the utility model, a filter is arranged between the centrifugal pump and the main transfer conduit.

By adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the reflux branch pipe is additionally arranged between the converging pipeline and the main conveying pipeline, so that the liquid medicine pumped into the main conveying pipeline by the centrifugal pump can partially reflux to the machine head of the centrifugal pump, the pressure of the liquid medicine in the main conveying pipeline is reduced, the pressure impact of the liquid medicine on an actuator is further reduced, and meanwhile, a large amount of medicine foam generated by the impact of the liquid medicine on the inner wall of the feed box is avoided to a certain extent. In addition, the liquid inlet pipe is adjusted to be the bent pipe, and the liquid outlet faces the side wall of the feed box with a longer distance, so that the liquid medicine is further prevented from impacting the inner wall of the feed box, and the generation of medicine foam is reduced.

In conclusion, the utility model effectively reduces the generation of medicine foam when the medicine liquid is conveyed to the material box of the filling machine by additionally arranging the reflux branch pipe and improving the liquid inlet pipe structure, thereby solving the problems of low actual working efficiency and high reject ratio of finished products of the filling machine caused by a large amount of medicine foam in the material box and ensuring good economic benefit of enterprises to a certain extent.

Drawings

The utility model will be described in more detail below with reference to the accompanying drawings and specific examples.

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

in the figure: 1. a branch pipe; 2. a converging pipeline; 3. a centrifugal pump; 4. a filter; 5. a main conveying pipeline; 6. a liquid inlet elbow; 7. a return branch pipe; 8. a pneumatic actuator; 9. a mesh-like cover body; 10. and (5) a feed box.

Detailed Description

Preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are presented for purposes of illustration and understanding only, and are not intended to limit the utility model.

Embodiments a medical fluid delivery system

The present embodiment discloses a medical fluid delivery system for delivering medical fluid from a fluid dispensing tank into a filling machine tank 10 to complete a subsequent medical fluid filling operation. As shown in fig. 1, the present embodiment includes a branch pipe 1, a confluence pipe 2, a centrifugal pump 3, a filter 4, a main transfer pipe 5, and a liquid inlet elbow 6 which are sequentially communicated, and a return branch pipe 7 for returning a part of the liquid medicine pumped into the main transfer pipe 5 by the centrifugal pump 3 to the confluence pipe 2 is connected between the confluence pipe 2 and the main transfer pipe 5 to reduce the pumping pressure of the liquid medicine in the main transfer pipe 5 by branching. The arrow direction in fig. 1 of this embodiment is the flow direction of the liquid medicine in the pipe.

Wherein, the lateral conduit 1 is used for abutting against the liquid outlet of the liquid tank, and in practice, a plurality of lateral conduits 1 can be arranged according to the quantity of the liquid tank. Each branch pipeline 1 is respectively connected with the liquid outlet of one liquid mixing tank and then is communicated with the converging pipeline 2 so as to converging the liquid medicine in all liquid mixing tanks into the converging pipeline 2.

Further specifically, the connection of the centrifugal pump 3 and the filter 4 to the drug solution delivery system will be described: as shown in fig. 1, the liquid inlet of the centrifugal pump 3 is in butt joint communication with the converging pipeline 2, the liquid outlet of the centrifugal pump 3 is in butt joint communication with the liquid inlet of the filter 4, and the liquid outlet of the filter 4 is in butt joint communication with the conveying main pipeline 5. In this embodiment, the centrifugal pump 3 is a centrifugal pump 3 with a constant frequency of 50Hz and 380V in the prior art, and the filter 4 is a filter 4 with a conventional structure in the prior art. When the system is in operation, the centrifugal pump 3 is started and stopped by the controller according to corresponding signals provided by a floating ball liquid level switch arranged in the filling machine feed box 10.

An actuator for adjusting the flow in the pipe is arranged on the conveying main pipe 5 and on the conveying section adjacent to the liquid inlet bent pipe 6. In this embodiment, the actuator is a pneumatic actuator 8 in the prior art, and the pneumatic actuator 8 is controlled by a controller according to parameters set by a program and signals provided by a float level switch.

The liquid inlet bent pipe 6 is arranged in a feed box 10 of the filling machine, and is used as a terminal structure to realize the filling of liquid medicine into the feed box 10. As shown in fig. 1, the liquid inlet elbow 6 comprises a vertical section and a horizontal section, wherein the vertical section extends from the top of the bin 10 into the bin 10, the horizontal section is arranged in the cavity of the bin 10 along the length direction of the bin 10, and a liquid outlet positioned at the terminal end of the horizontal section faces the inner side wall of the far end of the bin 10.

It should be noted that "distal inner side wall" refers to the inner side wall of the tank 10 farthest from the liquid outlet of the liquid inlet elbow 6.

In order to further disperse the liquid medicine at the terminal and reduce the impact force of the fluid, in this embodiment, a mesh cover 9 is disposed at the position of the liquid outlet of the liquid inlet elbow 6. The net cover 9 can split the liquid medicine to achieve the purpose of reducing pressure and speed.

It should be noted that the foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but the present utility model is described in detail with reference to the foregoing embodiment, and it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (3)

1. A medical fluid delivery system, characterized by: comprises a branch pipeline, a converging pipeline, a centrifugal pump, a main conveying pipeline and a liquid inlet bent pipe which are communicated in sequence; a backflow branch pipe is connected between the converging pipeline and the main conveying pipeline, and an actuator for adjusting the flow of the liquid medicine is arranged on the main conveying pipeline;

wherein the branch pipeline is used for being abutted with a liquid outlet of the liquid tank; the liquid inlet bent pipe is arranged in a feed box of the filling machine, and a liquid outlet of the liquid inlet bent pipe faces to the inner side wall of the distal end of the feed box.

2. The medical fluid delivery system of claim 1, wherein: a reticular cover body is arranged at the position of the liquid outlet of the liquid inlet bent pipe.

3. A medical fluid delivery system according to claim 2, wherein: a filter is arranged between the centrifugal pump and the main conveying pipeline.

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