On-line intelligent sampling device and method for process tank for glove production line

Abstract

The invention belongs to the technical field of glove production, and particularly provides an online intelligent sampling device and method for a process tank for a glove production line, the online intelligent sampling device comprises a plurality of liquid tanks, the liquid tanks contain different dipping liquids for hand masks, the tops of the liquid tanks are provided with screen-frame-shaped filter assemblies, and the filter assemblies at the tops of the liquid tanks are communicated with the first end of a first pipeline; a second end of the first pipeline is communicated to a liquid inlet end of a metering pump at a sampling position, a liquid outlet end of the metering pump is communicated to a first liquid inlet of an electric three-way valve through a second pipeline, and a first liquid outlet of the electric three-way valve is communicated to a corresponding sampling beaker through a third pipeline; a second liquid outlet of the electric three-way valve is communicated to a liquid return opening of the liquid tank through a fourth pipeline; and the liquid tank is further provided with a corresponding liquid discharging system and a corresponding liquid supplementing system. The sampling device can generate the following sampling method: S1, initializing and starting a system; s2, a liquid circulation stage; s3, a sampling operation stage; and S4, a sampling reset stage. According to the invention, efficient concentrated sampling can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of glove production, and particularly relates to an on-line intelligent sampling device and method for a process tank in a glove production line. Background Art

[0002] At present, during the production of disposable gloves, the hand molds need to be dipped in different liquid tanks multiple times to ensure the final quality of the gloves. The liquid in the tank is mixed with other different types of liquids attached to the hand molds. After a certain period of time, the composition, concentration, and liquid level height of the liquid in the tank will change, ultimately affecting the quality of the glove finished products.

[0003] To ensure the integrity of the glove production process and the quality of the final glove products, it is necessary to intermittently sample and test the liquid in the liquid tank during the production process. The current operation method is as follows: Relevant personnel go to each liquid tank in the production workshop every hour to take samples, and then analyze the sampled liquid in the laboratory. Finally, based on the test results, the employees are guided to adjust the liquid composition, concentration, etc. in the corresponding tank.

[0004] Since the glove production process section is up to 2 km long, each liquid tank is distributed on different floors, and the corresponding temperature ranges from 35°C to 60°C. Taking liquid samples every hour results in a harsh working environment and high labor intensity. Summary of the Invention

[0005] In view of the above defects, the present invention provides an on-line intelligent sampling device and method for a process tank in a glove production line, which can perform centralized sampling.

[0006] To achieve the above object, the present invention provides the following technical solution: An on-line intelligent sampling device for a process tank in a glove production line, including a number of liquid tanks, different dipping liquids for hand molds are contained in the liquid tanks, a net-frame-shaped filtering component is installed at the top of the liquid tank, the first end of a first pipeline is communicated at the filtering component at the top of the liquid tank, the second end of the first pipeline is communicated to the liquid inlet end of a metering pump at the sampling location, the liquid outlet end of the metering pump is communicated to the first liquid inlet of an electric three-way valve through a second pipeline, the first liquid outlet of the electric three-way valve is communicated to a corresponding sampling beaker through a third pipeline, the second liquid outlet of the electric three-way valve is communicated to the liquid return port of the liquid tank through a fourth pipeline, and the liquid tank is also equipped with a corresponding liquid discharge system and liquid supplement system.

[0007] As a further improvement of the present invention, the liquid supplement system includes a liquid supplement tank, a brand-new dipping liquid corresponding to the liquid tank is contained in the liquid supplement tank, the liquid supplement tank is communicated to the liquid inlet end of a liquid supplement pump, and the liquid outlet end of the liquid supplement pump is communicated to the liquid supplement port of the liquid tank through a liquid supplement pipeline.

[0008] As a further improvement of the present invention, the liquid discharge system includes a waste liquid tank, and the waste liquid tank is connected through a fifth pipeline to a waste liquid port at the bottom of the liquid tank that can be opened and closed.

[0009] An on-line intelligent sampling method for a process tank in a glove production line, which uses the on-line intelligent sampling device for a process tank in a glove production line to achieve sampling. The method specifically includes the following steps: S1: System initialization and startup. Start the metering pump, control the electric three-way valve to open the first liquid inlet and the second liquid outlet, and extract the dipping liquid from the filter component of the liquid tank. S2: Liquid circulation stage. The dipping liquid forms a closed-loop circulation among the liquid tank, the electric three-way valve, and the metering pump to ensure uniform liquid composition. S3: Sampling operation stage. Switch the path of the electric three-way valve, close the second liquid outlet and open the first liquid outlet to make the real-time dipping liquid flow into the sampling beaker. S4: Sampling reset stage. Switch the path of the electric three-way valve, close the first liquid outlet and open the second liquid outlet, and drain the liquid in the pipeline back to the liquid tank through the metering pump.

[0010] As a further improvement of the present invention, the liquid circulation time in S2 is 2 - 3 minutes.

[0011] As a further improvement of the present invention, in step S3, quantitative sampling is performed by controlling the opening time of the first liquid outlet.

[0012] As a further improvement of the present invention, the sampling method further includes: S5: Cleaning and replenishing stage. Open the liquid outlet of the liquid tank, and discharge the waste liquid to the waste liquid tank through the fifth pipeline.

[0013] As a further improvement of the present invention, S5 further includes: Start the replenishing pump, and transport the new dipping liquid in the replenishing tank to the liquid tank.

[0014] As a further improvement of the present invention, in S4, the liquid needs to be circulated for 3 minutes and then drained back into the liquid tank.

[0015] Advantages of the present invention: 1. Use a metering pump for liquid sampling, and concentrate the final sampling point in one place, which is convenient for laboratory personnel to obtain and has high efficiency. Utilize the existing liquid tank, add a filtering device to remove the influence of solid particles. Use an electric three-way valve to control the liquid flow. When not sampling, the liquid circulates, and when sampling, it is controlled separately.

[0016] 2. Can flexibly set timed and quantitative automatic sampling through the control system, set the time according to the sampling frequency requirement; control the sampling volume by controlling the opening time of the sampling tube valve of the electric three-way valve and the metering pump. Description of the Drawings

[0017] Figure 1 It is the system diagram of the on-line intelligent sampling device for the process tank in the glove production line of the present invention; Figure 2 It is the schematic diagram of the system connection of processes S2 and S4; Figure 3 It is the schematic diagram of the system connection of process S3; Figure 4 It is the schematic diagram of the system connection of process S5.

[0018] In the figure: 1 - liquid tank, 2 - filtration component, 3 - first pipeline, 4 - replenishing liquid tank, 5 - replenishing liquid pump, 6 - replenishing liquid pipeline, 7 - waste liquid pipe, 8 - fifth pipeline, 9 - waste liquid tank, 10 - metering pump, 11 - second pipeline, 12 - third pipeline, 13 - electric three-way valve, 14 - sampling beaker, 15 - fourth pipeline. Detailed implementation manners

[0019] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific examples described herein are only used to explain the present invention and are not used to limit the present invention. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only references to the directions in the accompanying drawings. Therefore, the directional terms used are for illustration and not for limiting the present invention. In addition, in all embodiments, the same reference numerals represent the same elements.

[0020] As Figure 1 shown, the present invention provides an on-line intelligent sampling device for a process tank in a glove production line, including a plurality of liquid tanks 1, and different dipping liquids for hand molds are respectively placed in the plurality of liquid tanks 1. A filtration component 2 is installed on one side of the top of the liquid tank 1, and the filtration component 2 is a mesh frame.

[0021] As a further explanation of this embodiment, the filtration component 2 can isolate large particle impurities in the liquid tank 1, ensure the fluidity of the liquid in the filtration tank, and at the same time avoid pipeline blockage caused by the influence of solid particles when pumping the liquid.

[0022] The tops of the plurality of liquid tanks 1 are all provided with a first pipeline 3, and the first end of the first pipeline 3 communicates with the inside of the filtration component 2 at the top of the liquid tank 1. The second end of the first pipeline 3 communicates with the sampling location.

[0023] The sampling location includes a frame body, and the frame body is divided into three layers from top to bottom. The bottom layer of the frame body is the metering pump 10 placement layer, and a plurality of metering pumps 10 are arranged on the metering pump 10 placement layer, which can transport the liquid according to the required measurement. The metering pump 10 is electrically connected to the control system. The second end of the first pipeline 3 communicates with the liquid inlet end of the metering pump 10.

[0024] The upper layer of the frame is the valve body placement layer, and several electric three-way valves 13 are fixedly arranged on the valve body placement layer. The electric three-way valves 13 are electrically connected to the control system. The number of electric three-way valves 13 is the same as the number of metering pumps 10. Each electric three-way valve 13 corresponds to a metering pump 10. The first liquid inlet of the electric three-way valve 13 is connected to the liquid outlet end of the liquid inlet pump through the second pipeline 11.

[0025] The middle layer of the frame is the beaker placement layer. The beaker installation layer is provided with several sampling beakers 14. The number of sampling beakers 14 is the same as the number of electric three-way valves 13. Each sampling beaker 14 corresponds to an electric three-way valve 13. The first liquid outlet of the electric three-way valve 13 is connected to the corresponding sampling beaker 14 through the third pipeline 12.

[0026] The second liquid outlet of the electric three-way valve 13 is connected to the liquid return port of the liquid tank 1 connected to the liquid inlet end of the metering pump 10 through the fourth pipeline 15.

[0027] The bottom of the liquid tank 1 is provided with an openable waste liquid port. The liquid tank 1 is connected to the fifth pipeline 8 through the waste liquid pipe 7, and the liquid outlet end of the fifth pipeline 8 is connected to the waste liquid tank 9 for centralized collection.

[0028] The top of the liquid tank 1 is provided with an openable liquid supplement port. The liquid supplement port is connected to the liquid outlet end of the liquid supplement pump 5 through the liquid supplement pipeline 6. The liquid inlet end of the liquid supplement pump 5 is connected to the liquid outlet of each liquid supplement tank 4. The liquid supplement pump 5 is electrically connected to the control system.

[0029] As a further explanation of this embodiment, each liquid supplement tank 4 contains the corresponding brand-new dipping liquid in the connected liquid tank 1.

[0030] The sampling method formed by the above-mentioned on-line intelligent sampling device for the process tank of the glove production line includes: S1: System initialization and startup.

[0031] When sampling is required, the power supply of the metering pump 10 is turned on through the control system, the metering pump 10 is started to run, and at the same time, the control system controls the first liquid inlet and the second liquid outlet of the electric three-way valve 13 to open. The metering pump 10 pumps the liquid from the filter component 2 of the liquid tank 1.

[0032] S2: Liquid circulation stage.

[0033] As Figure 2 shown, in the mode of S1 of the system, the dipping liquid forms a circulation loop in the liquid tank 1, the electric three-way valve 13, and the metering pump 10, and the circulation lasts for 2 - 3 minutes.

[0034] As a further explanation of this embodiment, step S2 can ensure that the composition of the dipping liquid in the liquid tank 1 is uniform, and the sampled dipping liquid is the real-time dipping liquid in the liquid tank 1.

[0035] S3: Sampling operation stage.

[0036] As shown in Figure 3 , the control system is used to control the electric three-way valve 13 to switch the path, close the second liquid outlet, open the first liquid outlet, and the liquid in the liquid tank 1 is dipped in real time through the electric three-way valve 13 and flows into the sampling beaker 14.

[0037] As a further explanation of this embodiment, quantitative sampling is performed by presetting the opening time of the first liquid outlet of the electric three-way valve 13.

[0038] S4: Sampling reset stage.

[0039] As shown in Figure 2 , the control system is used to control the electric three-way valve 13 to switch the path, close the first liquid outlet, open the second liquid outlet. After circulating for 3 minutes, the liquid in the pipeline is discharged into the liquid tank 1 by the metering pump 10, and the metering pump 10 is closed. The system enters the standby state, waiting for the next sampling.

[0040] S5: Cleaning and replenishing stage.

[0041] As shown in Figure 4 , open the liquid outlet of the liquid tank 1, discharge the waste liquid that cannot be used in the corresponding liquid tank 1 after sampling and detection into the waste liquid tank 9, and open the corresponding replenishing pump 5 through the control system to transport the new sampling dipping liquid into the liquid tank 1.

[0042] The above is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above-mentioned implementation measures. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. An on-line intelligent sampling device for a process tank in a glove production line, characterized in that, It includes several liquid tanks (1) filled with different dipping liquids for hand masks. A filter assembly (2) in the shape of a wire frame is installed at the top of the liquid tank (1). The first end of a first pipeline (3) is connected to the top of the liquid tank (1) at the filter assembly (2). The second end of the first pipeline (3) is connected to the liquid inlet end of a metering pump (10) at the sampling point. The liquid outlet end of the metering pump (10) is connected to the first liquid inlet of an electric three-way valve (13) through a second pipeline (11). The first liquid outlet of the electric three-way valve (13) is connected to a corresponding sampling beaker (14) through a third pipeline (12). The second liquid outlet of the electric three-way valve (13) is connected to the liquid return port of the liquid tank (1) through a fourth pipeline (15). The liquid tank (1) is also equipped with a corresponding liquid discharge system and liquid supply system.

2. The on-line intelligent sampling device for the process tank in the glove production line according to claim 1, wherein, The liquid supply system includes a liquid supply tank (4) filled with brand-new dipping liquid corresponding to the liquid tank (1). The liquid supply tank (4) is connected to the liquid inlet end of a liquid supply pump (5). The liquid outlet end of the liquid supply pump (5) is connected to the liquid supply port of the liquid tank (1) through a liquid supply pipeline (6).

3. The online intelligent sampling device for the process tank in the glove production line according to claim 1, wherein, The liquid discharge system also includes a waste liquid tank (9). The waste liquid tank (9) is connected to the openable waste liquid port at the bottom of the liquid tank (1) through a fifth pipeline (8).

4. An online intelligent sampling method for a process tank in a glove production line, characterized in that, This method uses the on-line intelligent sampling device for the process tank of the glove production line described in any one of claims 1 to 3 to achieve sampling. The method specifically includes the following steps: S1: System initialization and startup. Start the metering pump (10), control the electric three-way valve (13) to open the first liquid inlet and the second liquid outlet, and extract the dipping liquid from the filter assembly (2) of the liquid tank (1). S2: Liquid circulation stage. The dipping liquid forms a closed-loop circulation among the liquid tank (1), the electric three-way valve (13), and the metering pump (10) to ensure uniform liquid composition. S3: Sampling operation stage. Switch the path of the electric three-way valve (13), close the second liquid outlet and open the first liquid outlet to make the real-time dipping liquid flow into the sampling beaker (14). S4: Sampling reset stage. Switch the path of the electric three-way valve (13), close the first liquid outlet and open the second liquid outlet, and drain the liquid in the pipeline back to the liquid tank (1) through the metering pump (10).

5. The online intelligent sampling method for the process tank in the glove production line according to claim 4, characterized in that The liquid circulation time in S2 is 2 - 3 minutes.

6. The online intelligent sampling method for the process tank in the glove production line according to claim 4, characterized in that, In step S3, quantitative sampling is carried out by controlling the opening time of the first liquid outlet.

7. The online intelligent sampling method for the process tank in the glove production line according to claim 4, characterized in that The sampling method also includes: S5: Cleaning and liquid supply stage. Open the liquid outlet of the liquid tank (1), and drain the waste liquid to the waste liquid tank (9) through the fifth pipeline (8).

8. The online intelligent sampling method for the process tank in the glove production line according to claim 7, wherein, S5 also includes: Start the liquid supply pump (5) to transport the new dipping liquid in the liquid supply tank (4) to the liquid tank (1).

9. The online intelligent sampling method for the process tank in the glove production line according to claim 4, characterized in that, In S4, the liquid needs to be circulated for 3 minutes and then drained back into the liquid tank (1).

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