Automatic dropwise adding device for sample analysis
By designing an automatic dropping device, using a PLC controller, storage container, peristaltic pump, three-way valve and return pipe, the problem of sample temperature reduction in dispersed dye analysis is solved, and the sample temperature is stable control is achieved, and the analysis results are ensured.
Patent Information
- Application Number
- CN202420659463.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-04-02
AI Technical Summary
During the analysis of dispersed dyes, the sample temperature gradually decreases due to the long conveying pipeline and the sample is stationary during the interval between quantitative droplets, which affects the accuracy of the analysis results.
An automatic drip adding device is designed, including a PLC controller, a storage container, a peristaltic pump, a three-way valve and a return pipe. By setting up a three-way valve and a return pipe, when the next drip is required, the peristaltic pump is first activated, and the samples with a temperature lower than the required value are discharged into the storage container through the return pipe, and the samples with the composite temperature requirements of the storage container are drawn into the hose and the return pipe, and then the three-way valve is controlled to connect the hose and the feeding pipe to ensure that the temperature of the drip sample meets the required value.
Through this device, the temperature of the sample can be effectively maintained, the accuracy of the analysis results can be ensured, the overall structure is simple, and the use effect is good.
Smart Images
Figure CN222618646U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an automatic dripping device, in particular to an automatic dripping device for sample analysis. Background Art
[0002] Disperse dyes are the most important and major category in the dye industry. They are non-ionic dyes that do not contain strong water-soluble groups and are in a dispersed state during the dyeing process. The particle fineness is required to be around 1μm. After the original dye is obtained, it needs to be post-processed, including crystal stabilization, grinding with dispersants and other commercial treatments to obtain commercial dyes. It is mainly used for printing and dyeing of polyester and its blended fabrics, and can also be used for printing and dyeing of synthetic fibers such as acetate, nylon, polypropylene, chloroprene, and acrylic.
[0003] During the research and development analysis of disperse dyes, samples need to be added to the analysis equipment at regular intervals and in fixed quantities. Currently, peristaltic pumps are often used to extract samples from storage containers for high-precision quantitative addition. During the analysis of some disperse dyes, higher requirements are placed on the temperature of the added samples. Although storage containers with heating functions can be used to heat and keep the samples in the containers warm, the delivery pipeline is long and the samples in the pipeline are in a static state during the interval between quantitative additions. The temperature will gradually decrease, resulting in the temperature being lower than the required value during the next addition, which will affect the accuracy of the analysis results and needs to be improved. Utility Model Content
[0004] The purpose of the utility model is to provide an automatic dripping device for sample analysis to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] An automatic dripping device for sample analysis comprises a PLC controller, a storage container, a peristaltic pump, a three-way valve and a reflux pipe, wherein a hose is installed on the peristaltic pump, and one end of the hose is connected to the storage container, the other end of the peristaltic pump is connected to the liquid inlet of the three-way valve, one liquid outlet of the three-way valve is connected to the reflux pipe, and the reflux pipe is connected to the storage container, the other liquid outlet of the three-way valve is connected to the feeding pipe of an analysis device, and a heating mechanism and a stirring mechanism are installed on the storage container.
[0007] As a further solution of the utility model: the storage container includes a tank body with a plurality of legs fixedly installed on the bottom, a discharge pipe is arranged through the bottom of the tank body, and the discharge pipe is connected to the liquid inlet end of the hose, a top cover is detachably connected to the top of the tank body, a feed pipe and a ventilation pipe are arranged through the top cover, a blocking cover is installed at the end of the feed pipe, an air filter is installed at the end of the ventilation pipe, and the top of the top cover is connected to the return pipe through a pipe joint.
[0008] As a further solution of the utility model: the heating mechanism includes an electric heater fixed to the outer wall of the bottom of the tank body, the outer wall of the tank body is covered with a heat preservation cover, and the outer wall of the bottom of the tank body is also penetrated by a first temperature sensor.
[0009] As a further solution of the utility model: the stirring mechanism includes a motor fixedly installed on the top of the top cover, the output shaft of the motor passes through the top cover and is fixedly connected to a rotating shaft, and the outer wall of the bottom end of the rotating shaft is fixedly connected to a plurality of stirring blades.
[0010] As a further solution of the utility model: a second temperature sensor is installed at the liquid inlet end of the reflux pipe, a liquid level sensor is penetrated on the top cover, and the PLC controller is electrically connected to an audible and visual alarm.
[0011] As a further solution of the utility model: a plurality of second U-shaped blocks are fixedly connected to the peripheral wall of the top cover, the outer wall of the tank body and the corresponding positions of each second U-shaped block are fixedly connected to a first U-shaped block, the inner side of the first U-shaped block is rotatably connected to a screw rod, and the screw rod passes through the second U-shaped block and is matched with a hand-tightened nut.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] The utility model arranges a three-way valve, a reflux pipe, etc., and when the next dripping is needed, the peristaltic pump is first started to discharge the sample with a temperature lower than the required value in the hose into the storage container through the reflux pipe, and the sample with the composite temperature requirement in the storage container is drawn into the hose and the reflux pipe, and then the three-way valve is controlled to connect the hose with the feeding pipe, so as to ensure that the temperature of the dripped sample meets the required value. The overall structure is simple and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 The figure is a schematic diagram of the structure of an automatic dripping device for sample analysis.
[0015] Figure 2 The present invention is a schematic diagram of the structure of a storage container in an automatic dripping device for sample analysis.
[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle.
[0017] Among them, there are storage container 1, tank body 2, support legs 3, discharge pipe 4, electric heater 5, heat preservation cover 6, first temperature sensor 7, top cover 8, motor 9, rotating shaft 10, stirring blade 11, feed pipe 12, plugging cover 13, liquid level sensor 14, ventilation pipe 15, air filter 16, reflux pipe 17, first U-shaped block 18, second U-shaped block 19, screw 20, hand nut 21, hose 22, peristaltic pump 23, three-way valve 24, second temperature sensor 25, and feeding pipe 26. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] See also Figures 1 to 3 In an embodiment of the utility model, an automatic dripping device for sample analysis includes a PLC controller, a storage container 1, a peristaltic pump 23, a three-way valve 24 and a reflux pipe 17, wherein a hose 22 is installed on the peristaltic pump 23, and one end of the hose 22 is communicated with the storage container 1, and the other end of the peristaltic pump 23 is communicated with the liquid inlet of the three-way valve 24, and one liquid outlet of the three-way valve 24 is connected to the reflux pipe 17, and the reflux pipe 17 is communicated with the storage container 1, and the other liquid outlet of the three-way valve 24 is connected to the feeding pipe 26 of the analysis equipment, and a heating mechanism and a stirring mechanism are installed on the storage container 1.
[0020] By adopting the above scheme, the utility model can heat the sample in the storage container 1 to the required temperature through the heating mechanism when in use. When it is necessary to drip, the PLC controller starts the peristaltic pump 23 and controls the three-way valve 24 to connect the hose 22 with the feeding pipe 26, so that the required amount of sample can be dripped into the analysis equipment. After completing one dripping, the three-way valve 24 is controlled to connect the hose 22 with the reflux pipe 17, and the peristaltic pump 23 is closed. When it is necessary to drip next time, the peristaltic pump 23 is started first to discharge the sample with a temperature lower than the required value in the hose 22 into the storage container 1 through the reflux pipe 17, and the sample with the composite temperature requirement of the storage container 1 is drawn into the hose 22 and the reflux pipe 17, and then the three-way valve 24 is controlled to connect the hose 22 with the feeding pipe 26, so as to ensure that the temperature of the dripped sample meets the required value. The overall structure is simple and the use effect is good.
[0021] Specific combination Figure 2In one embodiment of the utility model, the storage container 1 includes a tank body 2 with a plurality of legs 3 fixedly mounted on the bottom, a discharge pipe 4 is provided through the bottom of the tank body 2, and the discharge pipe 4 is connected to the liquid inlet end of the hose 22, a top cover 8 is detachably connected to the top of the tank body 2, a feed pipe 12 and a ventilation pipe 15 are provided through the top cover 8, a plugging cover 13 is installed at the end of the feed pipe 12, an air filter 16 is installed at the end of the ventilation pipe 15, and the top of the top cover 8 is connected to the return pipe 17 through a pipe joint.
[0022] By setting the feed pipe 12, it is convenient to inject the liquid sample into the tank body 2. By setting the ventilation pipe 15, the interior of the tank body 2 can be connected with the outside world, thereby ensuring that the sample can smoothly enter the tank body 2 or be discharged from the tank body 2. By setting the air filter 16, dust in the outside air can be prevented from entering the tank body 2 through the air intake pipe 12, thereby preventing the sample from being contaminated.
[0023] Specific combination Figure 2 On the basis of the previous embodiment, further, the heating mechanism includes an electric heater 5 fixed on the outer wall of the bottom of the tank body 2, the outer wall of the tank body 2 is covered with a heat preservation cover 6, and the bottom outer wall of the tank body 2 is also penetrated by a first temperature sensor 7.
[0024] By setting the electric heater 5 and the first temperature sensor 7, the sample in the tank body 2 can be heated and the temperature of the sample can be monitored in real time, so as to facilitate the temperature control of the sample in the tank body 2, and the heating of the sample can be stopped by simply cutting off the power connection of the electric heater 5, so as to facilitate the user to control the electric heater 5.
[0025] Specific combination Figure 2 On the basis of the previous embodiment, further, the stirring mechanism includes a motor 9 fixedly installed on the top of the top cover 8, the output shaft of the motor 9 passes through the top cover 8 and is fixedly connected to a rotating shaft 10, and a plurality of stirring blades 11 are fixedly connected to the outer wall of the bottom end of the rotating shaft 10. By starting the motor 9 to drive the rotating shaft 10 to rotate, the plurality of stirring blades 11 can be used to stir the sample in the tank body 2, thereby preventing the sample from settling.
[0026] Specific combination Figure 1 , Figure 2 On the basis of the previous embodiment, further, a second temperature sensor 25 is installed at the liquid inlet end of the reflux pipe 17, a liquid level sensor 14 is provided on the top cover 8, and the PLC controller is electrically connected to an audible and visual alarm.
[0027] By setting the second temperature sensor 25, the temperature of the sample entering the reflux pipe 17 through the three-way valve 24 can be monitored. When the temperature meets the required value, the three-way valve 24 can be controlled to connect the hose 22 with the feeding pipe 26 for the next sample drop. By setting the liquid level sensor 14, the remaining amount of sample in the tank body 2 can be monitored. When the liquid level drops to the alarm value, the PLC controller will start the sound and light alarm to sound an alarm, thereby reminding the staff to add samples in time.
[0028] Specific combination Figure 3 In one embodiment of the utility model, a plurality of second U-shaped blocks 19 are fixedly connected to the peripheral wall of the top cover 8, and a first U-shaped block 18 is fixedly connected to the outer wall of the tank body 2 and the corresponding position of each second U-shaped block 19, and a screw rod 20 is rotatably connected to the inner side of the first U-shaped block 18, and the screw rod 20 passes through the second U-shaped block 19 and is matched with a hand-tightened nut 21.
[0029] By loosening the hand-tightening bolt 21 and rotating the screw rod 20 to move the screw rod 20 to the outside of the second U-shaped block 19 , the top cover 8 can be removed from the tank body 2 , thereby facilitating cleaning of the interior of the tank body 2 .
[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. An automatic dripping device for sample analysis, characterized in that: The invention comprises a PLC controller, a storage container (1), a peristaltic pump (23), a three-way valve (24) and a reflux pipe (17); the peristaltic pump (23) is provided with a hose (22), one end of which is in communication with the storage container (1); the other end of the peristaltic pump (23) is in communication with a liquid inlet of the three-way valve (24); one liquid outlet of the three-way valve (24) is connected with a reflux pipe (17), and the reflux pipe (17) is in communication with the storage container (1); the other liquid outlet of the three-way valve (24) is connected with a feeding pipe (26) of an analytical device; and the storage container (1) is provided with a heating mechanism and a stirring mechanism.
2. The automatic dripping device for sample analysis according to claim 1, characterized in that: The storage container (1) comprises a tank body (2) with a plurality of legs (3) fixedly mounted on the bottom, a discharge pipe (4) is provided through the bottom of the tank body (2), and the discharge pipe (4) is connected to the liquid inlet end of a hose (22), a top cover (8) is detachably connected to the top of the tank body (2), a feed pipe (12) and a ventilation pipe (15) are provided through the top cover (8), a plugging cover (13) is mounted at the end of the feed pipe (12), an air filter (16) is mounted at the end of the ventilation pipe (15), and the top of the top cover (8) is connected to a return pipe (17) via a pipe joint.
3. The automatic dripping device for sample analysis according to claim 2, characterized in that: The heating mechanism comprises an electric heater (5) fixed to the outer wall of the bottom of the tank body (2); the outer wall of the tank body (2) is covered with a heat-insulating cover (6); and a first temperature sensor (7) is also provided through the outer wall of the bottom of the tank body (2).
4. The automatic dripping device for sample analysis according to claim 2, characterized in that: The stirring mechanism comprises a motor (9) fixedly mounted on the top of the top cover (8); an output shaft of the motor (9) passes through the top cover (8) and is fixedly connected to a rotating shaft (10); a plurality of stirring blades (11) are fixedly connected to the outer wall of the bottom end of the rotating shaft (10).
5. The automatic dripping device for sample analysis according to claim 2, characterized in that: A second temperature sensor (25) is installed at the liquid inlet end of the reflux pipe (17), a liquid level sensor (14) is provided on the top cover (8), and the PLC controller is electrically connected to an audible and visual alarm.
6. The automatic dripping device for sample analysis according to claim 2, characterized in that: A plurality of second U-shaped blocks (19) are fixedly connected to the peripheral wall of the top cover (8); a first U-shaped block (18) is fixedly connected to the outer wall of the tank body (2) at the corresponding position of each second U-shaped block (19); a screw rod (20) is rotatably connected to the inner side of the first U-shaped block (18); the screw rod (20) passes through the second U-shaped block (19) and is matched with a hand-tightened nut (21).