Automatic liquid adding device for food contact material and product migration test

Abstract

The utility model relates to an automatic liquid adding device for a food contact material and product migration test, which comprises a central controller module, a total automatic heating and liquid adding module, a sample grabbing and moving module and a conveying belt, and is characterized in that the total automatic heating and liquid adding module consists of a plurality of automatic heating and liquid adding modules; the sample grabbing and moving module comprises a mechanical arm, a grabbing hand, a mechanical arm placing platform and a mechanical arm sliding rail, the grabbing hand is arranged on the mechanical arm, the mechanical arm is arranged on the mechanical arm placing platform, and the mechanical arm placing platform is arranged on the mechanical arm sliding rail. The device can well solve the problem that at present, tedious manual liquid adding operation is needed, a central controller is directly used for operating the whole device to carry out a three-step (measuring, temperature measuring and liquid adding) liquid adding process, manpower can be well reduced, and the detection efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model discloses a kind of suitable for food contact material and product automatic liquid adding device, in particular to a kind of suitable for by central controller control total automatic heating and liquid adding module The type, concentration, volume, temperature of solution added, and after solution is added, sample is removed by sample grabbing movement module by automatic liquid adding device. BACKGROUND

[0002] Food contact material and product migration test is one of the test projects of many food contact materials and products, which is to place the food contact material and product sample to be tested in a container, add different water-based simulants, such as ethanol, 4% acetic acid, isooctane, and water, under selected simulation conditions (at different temperatures and times), and conduct migration experiments on the food contact material and product sample. In the early stage of the experiment, the different water-based simulants need to be heated to a specified temperature, and then the corresponding volume is measured using a graduated cylinder before being added to the container containing the sample. Since the experiment requires the experimenter to repeat the above liquid adding operation within a certain time to meet the daily normal detection business, and the experiment process is very time-consuming and labor-intensive, it is urgent to design an automatic liquid adding device for food contact materials and products.

[0003] At present, most domestic laboratories still use traditional manual methods to carry out food contact material and product migration test, that is, first place the food contact material and product sample to be tested in a container, then add the corresponding volume of different water-based simulants, such as ethanol, 4% acetic acid, isooctane, and water, and then conduct migration experiments on the food contact material and product sample under selected simulation temperature and time. The most time-consuming and labor-intensive part of the experiment is the addition of the simulant. According to the standard requirements, the food simulant needs to be heated to the selected temperature in advance before being added, so the manual operation process is usually to measure the corresponding volume of food simulant in a beaker using a graduated cylinder, then heat the food simulant in the beaker to the selected temperature, measure the temperature using a thermometer during the heating process, and finally add the food simulant of the corresponding volume at the set temperature to the container containing the food contact material and product sample to be tested.

[0004] In order to free the long-term repetitive labor of manual work and improve the detection efficiency, it is of great significance to design an automatic liquid adding device for food contact materials and products in view of the problems existing in the actual detection process. SUMMARY

[0005] The utility model discloses to food contact material and product automatic liquid adding device suitable for above -mentioned problem. The utility model discloses a food contact material and product migration test's automatic liquid adding device, including central controller module, total automatic heating and liquid adding module, sample snatch mobile module and conveyer, its characterized in that: total automatic heating and liquid adding module is composed of several automatic heating and liquid adding modules, sample snatch mobile module includes mechanical arm, grab hand, mechanical arm placing platform, mechanical arm slide rail, and grab hand sets up on mechanical arm, and mechanical arm sets up on mechanical arm placing platform, mechanical arm placing platform sets up on mechanical arm slide rail. Each automatic heating and liquid adding module is composed of liquid storage tank, liquid storage tank placing platform, high accuracy liquid adding pump, polytetrafluoroethylene conduit, liquid adding mouth, buffer tank, three -way electromagnetic valve, branch pipe, heating tank, condenser pipe, cooling hydrazine, cooling hydrazine conduit, electric stirring device, temperature sensor, oil bath, oil bath conduit, liquid outlet solenoid valve, liquid outlet, sample placing platform, the liquid storage tank is connected liquid adding mouth by polytetrafluoroethylene conduit and high accuracy liquid adding pump, the liquid storage tank sets up on liquid storage tank placing platform, and liquid adding mouth corresponds to buffer tank top, and buffer tank bottom plate opening is connected three -way electromagnetic valve entrance by branch pipe, and the first export of three -way electromagnetic valve is communicated to sample placing platform by branch pipe, and the first export of three -way electromagnetic valve is communicated heating tank top -end entrance by branch pipe, and be provided with condenser pipe on heating tank, and the cooling hydrazine conduit is connected cooling hydrazine on the upper and lower ends of condenser pipe, and be provided with electric stirring device on heating tank top, and the stirring rod of electric stirring device is located in heating tank, and be provided with temperature sensor in heating tank, and the interlayer of heating tank is connected oil bath by oil bath conduit, and be provided with liquid outlet on heating tank bottom plate, and liquid outlet connects liquid outlet solenoid valve, and liquid outlet solenoid valve is connected by one tee joint and the branch pipe of three -way electromagnetic valve's first export connection, and the export end of tee joint is located on the sample placing position of sample placing platform top. Total automatic heating and liquid adding module, sample snatch mobile module, conveyer are parallelly arranged, and sample snatch mobile module is arranged between parallelly arranged total automatic heating and liquid adding module and conveyer. Automatic heating and liquid adding module has four. The liquid storage tank connected to the automatic heating and liquid adding module has multiple. The utility model has the advantages that: the central controller module, the total automatic heating and liquid adding module, the sample snatch mobile module and the conveyer are linked and work together to perform the liquid adding step of the migration test of the food contact material and product, and compared with the prior art, the device has the characteristics of reducing human participation.The device can well solve the current cumbersome liquid adding operation problem (firstly, the corresponding volume of food simulant is measured in a beaker by using a measuring cylinder, then the food simulant in the beaker is heated to a selected temperature, and a thermometer is used to measure the temperature during the heating process, finally, the corresponding volume of food simulant which has reached the set temperature is added into a vessel containing food contact materials and product samples to be tested), through directly using a central controller to operate the whole device to perform a three-in-one (measuring, temperature measuring and liquid adding) liquid adding process, the human resources can be reduced and the detection efficiency can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 It is a structural schematic diagram of the utility model.

[0007] Figure 2 It is a structural schematic diagram of the automatic heating and liquid adding module of the utility model. DETAILED DESCRIPTION

[0008] The specific embodiments of the utility model are described in detail below in combination with the drawings, so that the skilled in the art can more clearly understand how to practice the utility model. Although the utility model is described in combination with its preferred specific embodiments, these embodiments are only illustrative, not limiting the scope of the utility model.

[0009] The automatic liquid feeding device for food contact material and product migration test in the figure comprises a central controller module 1, a total automatic heating and liquid feeding module 2, a sample grabbing and moving module 3 and a conveying belt 4, characterized in that: the total automatic heating and liquid feeding module 2 is composed of a plurality of automatic heating and liquid feeding modules 5, the sample grabbing and moving module comprises a mechanical arm 6, a grabber 7, a mechanical arm placing platform 8 and a mechanical arm sliding rail 9, the grabber is arranged on the mechanical arm, the mechanical arm is arranged on the mechanical arm placing platform, and the mechanical arm placing platform is arranged on the mechanical arm sliding rail. Each automatic heating and liquid feeding module 5 is composed of a liquid storage tank 10, a liquid storage tank placing platform 11, a high-precision liquid feeding pump 12, a polytetrafluoroethylene conduit 13, a liquid feeding port 14, a buffer tank 15, a three-way electromagnetic valve 16, a branch pipe 17, a heating tank 18, a condenser pipe 19, a cooling hydrazine 20, a cooling hydrazine conduit 21, an electric stirring device 22, a temperature sensor 23, an oil bath 24, an oil bath conduit 25, a liquid outlet electromagnetic valve 26, a three-way joint 27 and a sample placing platform 28, the liquid storage tank 10 is connected with the liquid feeding port 14 through the polytetrafluoroethylene conduit 13 and the high-precision liquid feeding pump 12, the liquid storage tank 10 is arranged on the liquid storage tank placing platform 11, the liquid feeding port 14 is above the buffer tank 15, the bottom plate opening of the buffer tank is connected with the inlet of the three-way electromagnetic valve 16 through the branch pipe 17, the first outlet of the three-way electromagnetic valve is connected with the sample placing platform 28 through the branch pipe 17, the first outlet of the three-way electromagnetic valve is connected with the top inlet of the heating tank 18 through the branch pipe 17, the condenser pipe 19 is arranged on the heating tank, the cooling hydrazine conduit 21 is connected with the cooling hydrazine 20 at the upper and lower ends of the condenser pipe, the electric stirring device 22 is arranged at the top of the heating tank, the stirring rod 29 of the electric stirring device is located in the heating tank, the temperature sensor 23 is arranged in the heating tank, the outer layer of the heating tank 18 is connected with the oil bath 24 through the oil bath conduit 25, the liquid outlet is arranged on the bottom plate of the heating tank, the liquid outlet is connected with the liquid outlet electromagnetic valve 26, the liquid outlet electromagnetic valve is connected with the branch pipe connected with the first outlet of the three-way electromagnetic valve through the three-way joint 27, and the outlet end 30 of the three-way joint is located above the sample placing position of the sample placing platform. The total automatic heating and liquid feeding module 2, the sample grabbing and moving module 3 and the conveying belt 4 are arranged in parallel with each other, and the sample grabbing and moving module is arranged between the parallelly arranged total automatic heating and liquid feeding module and the conveying belt. There are four automatic heating and liquid feeding modules. There are a plurality of liquid storage tanks connected with the automatic heating and liquid feeding modules. Figure 1 As shown, there are two liquid storage tanks connected with the first automatic heating and liquid feeding module, which can store two solutions and mix them in the component 15.

[0010] When the food contact material and article is liquid added, the central controller module sends a command to the sample grabbing moving module to grab the sample 31 with the gripper, the mechanical arm is extended and retracted, the mechanical arm placement platform slides along the mechanical arm slide rail, according to the selected analog command sent by the central controller module, the mechanical arm placement platform is slid to the vicinity of the sample placement platform of one of the automatic heating and liquid adding modules in the total automatic heating and liquid adding module, the mechanical arm is extended and retracted, and the sample is placed on the sample placement platform, and the automatic heating and liquid adding module receives the food analog type, volume and temperature sent by the central controller module, and adds the food analog stored in the liquid storage tank into the buffer tank through the polytetrafluoroethylene conduit and the liquid adding port by the high-precision liquid adding pump, according to the command sent by the central controller module, the three-way electromagnetic valve determines whether the solution flows out to the left branch (normal temperature port) or the right branch (heating port), if the solution flows out to the left branch, the food analog flows into the tee joint through the branch connected to the first outlet of the three-way electromagnetic valve, and flows into the sample through the outlet end of the tee joint to complete the liquid adding, if the solution flows out to the right branch, the food analog flows into the heating tank, the heating tank is a double-layer glass structure, the interlayer is an oil bath area, the oil bath continuously supplies heat source to the interlayer through the oil bath conduit, the inner layer is a food analog heating area, the food analog is heated through the oil bath in the interlayer, and is stirred by the electric stirring device to make the heating uniform, the condenser pipe above the heating tank condenses the heated food analog to prevent volatilization, and the cooling hydrazine continuously supplies cooling circulating water to the condenser pipe through the cooling hydrazine conduit, the temperature sensor arranged on the heating tank monitors the temperature in real time, when the temperature sensor monitors that the temperature of the food analog reaches the selected temperature, a signal is sent to the central controller module, the central controller module sends an opening command to the outlet electromagnetic valve after receiving the signal, the food analog flows into the sample through the outlet end of the tee joint to complete the liquid adding, after the liquid adding is completed, the central controller module sends a command to the sample grabbing moving module, the mechanical arm placement platform is slid to the vicinity of the sample placement platform again, the mechanical arm is extended and retracted, the gripper grabs the sample, the mechanical arm is rotated to the side of the conveying belt, the sample is placed on the conveying belt, the conveying belt delivers the sample to the subsequent area, and finally the liquid adding is completed.

[0011] It should be noted that the utility model fully described can have various transformation and modification embodiments, and is not limited to the specific examples of the above embodiments. The above examples are only used to illustrate the utility model, but not to limit the utility model. In general, the protection scope of the utility model should include those transformations or substitutions and modifications which are obvious to those skilled in the art.

Claims

1. An automatic liquid feeding device for food contact material and article migration test, comprising a central controller module, a total automatic heating and liquid feeding module, a sample grabbing and moving module and a conveyor belt, characterized in that: The total automatic heating and liquid adding module is composed of a plurality of automatic heating and liquid adding modules, and the sample grabbing and moving module comprises a mechanical arm, a grab hand, a mechanical arm placing platform and a mechanical arm slide rail.

2. The automatic liquid feeding device for food contact material and article migration test according to claim 1, wherein Each automatic heating and liquid adding module is composed of a liquid storage tank, a liquid storage tank placing platform, a high-precision liquid adding pump, a polytetrafluoroethylene conduit, a liquid adding port, a buffer tank, a three-way electromagnetic valve, a branch pipe, a heating tank, a condenser pipe, cooling hydrazine, a cooling hydrazine conduit, an electric stirring device, a temperature sensor, an oil bath, an oil bath conduit, a liquid outlet electromagnetic valve, a liquid outlet, and a sample placing platform. The liquid storage tank is connected with the liquid adding port through the polytetrafluoroethylene conduit and the high-precision liquid adding pump. The liquid storage tank is arranged on the liquid storage tank placing platform, and the liquid adding port is above the buffer tank. The bottom plate opening of the buffer tank is connected with the inlet of the three-way electromagnetic valve through the branch pipe. The first outlet of the three-way electromagnetic valve is connected with the sample placing platform through the branch pipe. The first outlet of the three-way electromagnetic valve is connected with the top inlet of the heating tank through the branch pipe. The condenser pipe is arranged on the heating tank, and the cooling hydrazine conduit is connected with the cooling hydrazine at the upper and lower ends of the condenser pipe. The electric stirring device is arranged on the top of the heating tank, and the stirring rod of the electric stirring device is located in the heating tank. The temperature sensor is arranged in the heating tank. The interlayer of the heating tank is connected with the oil bath through the oil bath conduit. The liquid outlet is arranged on the bottom plate of the heating tank, and the liquid outlet is connected with the liquid outlet electromagnetic valve. The liquid outlet electromagnetic valve is connected with the branch pipe connected with the first outlet of the three-way electromagnetic valve through a three-way joint. The outlet end of the three-way joint is located above the sample placing position of the sample placing platform.

3. The automatic liquid feeding device for food contact material and article migration test according to claim 1, wherein The total automatic heating and liquid adding module, the sample grabbing and moving module, and the conveying belt are arranged in parallel with each other, and the sample grabbing and moving module is arranged between the total automatic heating and liquid adding module and the conveying belt arranged in parallel.

4. The automatic liquid feeding device for food contact material and article migration test according to claim 1, wherein The automatic heating and liquid adding module has four.

5. The automatic liquid addition device for food contact material and article migration test according to any one of claims 1 to 4, characterized in that, The liquid storage tank connected with the automatic heating and liquid adding module has a plurality of.

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