Purification device for pesticide residue detection

Abstract

The utility model relates to the technical field of preparation of samples for testing, and discloses a purification device for pesticide residue detection, which comprises a device shell, the upper side of the device shell is fixedly connected with a feeding pipeline, the feeding pipeline is communicated with the interior of the device shell, the lower side of the device shell is provided with a supporting base, and the supporting base is provided with a feeding port. A connecting opening is formed in the lower side of the supporting base and extends out of the upper side of the supporting base, a first discharging pipeline is fixedly connected to the lower side of the device shell, the first discharging pipeline communicates with the interior of the device shell, the first discharging pipeline is located in the connecting opening, and a switch valve is installed on the first discharging pipeline. The separation mechanism is arranged on the device shell, and in this way, purified extraction liquid and sulfuric acid can be separated without a pouring mode, so that the situation that the extraction liquid and the sulfuric acid are mixed again due to the fact that the action range is too large is avoided, and workers can conveniently take out the purified extraction liquid.

Description

TECHNICAL FIELD

[0001] The utility model relates to the preparation technical field of sample for testing, concretely is a kind of purification device for pesticide residue detection. BACKGROUND

[0002] Pesticide refers to the chemical synthesis or the mixture of several substances for preventing, controlling the disease, insect, grass, rat and other harmful organisms and purposefully adjusting plant, insect growth, which is derived from organism, other natural substances, and its preparation, the type of pesticide is many, among them organic chlorine pesticide is one of them, mainly used for preventing and treating plant disease, a kind of organic compound for insect pest, and its composition contains organic chlorine element.

[0003] Organochlorine pesticide is purified by sulfuric acid before detection, which can effectively remove interfering substances and provide accurate samples for subsequent gas chromatography determination. During purification, the extract is poured into a container, then sulfuric acid is added to the container, the container is shaken to mix the sulfuric acid and the extract uniformly, and then it is left to separate. After separation, the sulfuric acid will sink to the bottom, and then the extract and sulfuric acid are separated. The current separation method is to pour out the upper layer of extract, and the staff needs to be careful when pouring to avoid shaking the internal liquid due to excessive movement, which may cause the extract to mix with sulfuric acid again. This situation requires re-separation, which makes this separation method more troublesome. UTILITY MODEL CONTENT

[0004] (I) Technical problem solved

[0005] To solve the problems of the prior art, the utility model provides a purification device for pesticide residue detection, which can separate the extract after purification from sulfuric acid without pouring, avoids the mixing of extract and sulfuric acid due to excessive movement, and facilitates the staff to take out the extract after purification.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model provides the following technical scheme: a purification device for pesticide residue detection, comprising a device shell, a feed pipe is fixedly connected to the upper side of the device shell, the feed pipe is connected with the inside of the device shell;

[0008] A first discharge pipe is fixedly connected to the lower side of the device shell, the first discharge pipe is connected with the inside of the device shell, and a separation mechanism is arranged on the device shell, which can take out the extract without pouring the device shell;

[0009] The separating mechanism comprises a fixed block, a second discharging pipeline, a faucet, a sealing ring groove, a sealing ring, a control block, a fixed insertion rod and two springs.

[0010] Preferably, the lower side of the device shell is provided with a supporting base, and the lower side of the supporting base is fixedly connected with supporting legs.

[0011] The lower side of the supporting base is provided with a connecting port, the connecting port extends through the upper side of the supporting base, and the first discharging pipeline is provided with a switch valve.

[0012] Preferably, the fixed block is fixedly connected to the front side of the outer surface of the device shell, and the second discharging pipeline is arranged in the interior of the device shell.

[0013] The second discharging pipeline is in the shape of L, and the front end of the second discharging pipeline is rotatably penetrated through the device shell and the fixed block.

[0014] Preferably, the faucet is fixedly connected to the front end of the second discharging pipeline, and the sealing ring groove is arranged in the interior of the fixed block.

[0015] The sealing ring is fixedly sleeved on the outer surface of the second discharging pipeline.

[0016] Preferably, the sealing ring is rotatably connected in the interior of the sealing ring groove, the control block is arranged on the upper side of the device shell, and the fixed insertion rod is fixedly connected to the lower side of the control block.

[0017] The lower end of the fixed insertion rod is slidably penetrated into the interior of the device shell.

[0018] Preferably, the lower end of the fixed insertion rod is slidably extended into the interior of the second discharging pipeline, and the two springs are fixedly connected to the lower side of the control block.

[0019] The two springs are arranged on the left and right sides of the fixed insertion rod respectively, and the lower ends of the two springs are fixedly connected with the upper side of the device shell.

[0020] (Three) beneficial effects

[0021] Compared with the prior art, the utility model provides a kind of purification device for pesticide residue detection, with following beneficial effects:

[0022] (1), the pesticide residue detection purification device, the inside of the device shell pours extraction liquid and sulfuric acid and carries out fast mixing reaction, after shaking, the device shell is placed on the support base and is placed for stratification, after stratification is completed, sulfuric acid is in the lower layer, the extraction liquid is in the upper layer, at this time, the control block is pulled up, and then the limiting fixation of the second discharge pipe by the fixed rod is released, and then the faucet is rotated, the faucet drives the second discharge pipe to rotate, and then the upper end of the second discharge pipe moves to the inside of the extraction liquid, after the faucet is opened, the extraction liquid is discharged through the second discharge pipe and the faucet, because the device shell is transparent material, therefore, the inside can be observed during the rotation process, it is avoided that the second discharge pipe can rotate to the inside of the lower layer sulfuric acid, after the extraction liquid is taken out, the switch valve is opened to discharge the sulfuric acid, in this way, the purified extraction liquid and sulfuric acid can be separated without pouring, the mixing of extraction liquid and sulfuric acid is avoided, and the extraction liquid after purification is taken out conveniently.

[0023] (2), the pesticide residue detection purification device, when shaking for mixing reaction, at this time, the fixed rod is inserted into the inside of the second discharge pipe, and then the second discharge pipe is limited and sealed, the second discharge pipe is prevented from moving, and the mixed liquid is also prevented from entering the inside of the second discharge pipe, and then the situation that sulfuric acid exists when the extraction liquid is discharged is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a kind of pesticide residue detection purification device structural schematic diagram of the utility model;

[0025] Figure 2 It is device shell section connection structure schematic diagram of the utility model;

[0026] Figure 3 It is Figure 2 A enlarged schematic diagram.

[0027] In the figure: 1, device shell;2, feed pipe;3, support base;4, support leg;5, connecting port;6, first discharge pipe;7, switch valve;8, fixed block;9, second discharge pipe;10, faucet;11, sealing ring groove;12, sealing ring;13, control block;14, fixed rod;15, spring. DETAILED DESCRIPTION

[0028] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] Please refer to Figures 1 to 3 The utility model provides a new technical scheme: a kind of purification device for pesticide residue detection, including device shell 1, the upper side of device shell 1 is fixedly connected with feed pipe 2, feed pipe 2 is connected with the inside of device shell 1, device shell 1 is transparent material and is marked with scale line, the lower side of device shell 1 is provided with support base 3, support base 3 supports device shell 1, the lower side of support base 3 is fixedly connected with support leg 4, the lower side of support base 3 is provided with connecting port 5, connecting port 5 extends through the upper side of support base 3, the lower side of device shell 1 is fixedly connected with first discharge pipe 6, first discharge pipe 6 is connected with the inside of device shell 1, first discharge pipe 6 is in the inside of connecting port 5, switch valve 7 is installed on first discharge pipe 6, device shell 1 is provided with separation mechanism, and extraction liquid can be taken out without holding device shell 1 and pouring, and the separation mechanism includes fixed block 8, second discharge pipe 9, faucet 10, sealing ring groove 11, sealing ring 12, control block 13, fixed insertion rod 14 and two springs 15.

[0030] Further, fixed block 8 is fixedly connected to the front side of the outer surface of device shell 1, second discharge pipe 9 is arranged in the inside of device shell 1, the shape of second discharge pipe 9 is L-shaped, the front end of second discharge pipe 9 is rotatably penetrated through device shell 1 and fixed block 8, faucet 10 is fixedly connected to the front end of second discharge pipe 9, sealing ring groove 11 is arranged in the inside of fixed block 8, the center of sealing ring groove 11 is in the same position with the center of second discharge pipe 9, sealing ring 12 is fixedly sleeved on the outer surface of second discharge pipe 9, sealing ring 12 is rotatably connected in the inside of sealing ring groove 11, control block 13 is arranged on the upper side of device shell 1, fixed insertion rod 14 is fixedly connected to the lower side of control block 13, the lower end of fixed insertion rod 14 is slidably penetrated into the inside of device shell 1, the lower end of fixed insertion rod 14 is slidably extended into the inside of second discharge pipe 9, two springs 15 are fixedly connected to the lower side of control block 13, two springs 15 are arranged on the left and right sides of fixed insertion rod 14 respectively, and the lower ends of two springs 15 are fixedly connected to the upper side of device shell 1.

[0031] When starting work, first pour the extraction liquid into the inside of the device shell 1 through the feeding pipe 2, and then pour sulfuric acid into the inside of the device shell 1 through the feeding pipe 2, and the amount of sulfuric acid needs to be determined according to the scale on the device shell 1, and the amount of sulfuric acid needs to be leveled with the height of the second discharge pipe 9, at this time the fixed insertion rod 14 will be positioned and fixed to the second discharge pipe 9, then pick up the device shell 1 and shake it, so that the extraction liquid and sulfuric acid are quickly mixed and reacted, after shaking, place the device shell 1 on the supporting base 3 for static layering, after layering is completed, the sulfuric acid is in the lower layer, and the extraction liquid is in the upper layer, at this time pull the control block 13 upwards, the control block 13 drives the fixed insertion rod 14 to move upwards synchronously, and at the same time the spring 15 will start to become in a stretched state, and then the fixed insertion rod 14 will move out of the inside of the second discharge pipe 9, and then the fixed insertion rod 14 will be released from the position fixing and fixing of the second discharge pipe 9, and then rotate the faucet 10, the faucet 10 drives the second discharge pipe 9 to rotate, and then the upper end of the second discharge pipe 9 moves into the inside of the extraction liquid, and after the faucet 10 is opened, the extraction liquid is discharged through the second discharge pipe 9 and the faucet 10.

[0032] Because the device shell 1 is of transparent material, the staff can observe the inside during rotation, avoiding that the second discharge pipe 9 will be rotated into the inside of the lower layer of sulfuric acid, after the extraction liquid is taken out, the switch valve 7 is opened, and then the lower layer of sulfuric acid is discharged through the first discharge pipe 6, and at the same time, because the sulfuric acid will sink during layering, the sulfuric acid is also deposited in the inside of the first discharge pipe 6 during layering, after the discharge is completed, the faucet 10 is rotated, and then the faucet 10 drives the second discharge pipe 9 to restore, and then the second discharge pipe 9 moves to the position of the fixed insertion rod 14, at this time the control block 13 is pulled upwards, the control block 13 drives the fixed insertion rod 14 to move upwards, and then the fixed insertion rod 14 moves into the inside of the second discharge pipe 9, and then the second discharge pipe 9 is positioned and fixed and sealed, avoiding that the mixed liquid enters the inside of the second discharge pipe 9 during shaking, in this way, the purified extraction liquid and sulfuric acid can be separated without pouring, avoiding the situation that the extraction liquid and sulfuric acid are mixed again due to too large action amplitude, and facilitating the staff to take out the purified extraction liquid.

[0033] Working principle: when starting work, first pour the extraction liquid into the inside of the device shell 1 through the feeding pipe 2, then pour sulfuric acid into the inside of the device shell 1 through the feeding pipe 2, the amount of sulfuric acid needs to be determined according to the scale on the device shell 1, the amount of sulfuric acid needs to be kept with the height of the second discharge pipe 9, at this time the fixed insertion rod 14 will be limited and fixed to the second discharge pipe 9, then hold the device shell 1 and shake it, so that the extraction liquid and sulfuric acid are quickly mixed and reacted, after shaking, place the device shell 1 on the supporting base 3 and stand for stratification, after stratification is completed, the sulfuric acid is in the lower layer, and the extraction liquid is in the upper layer, at this time pull the control block 13 upwards, the control block 13 drives the fixed insertion rod 14 to move upwards synchronously, and at the same time the spring 15 will start to become in tension, and then the fixed insertion rod 14 will move out of the inside of the second discharge pipe 9, and then the fixed insertion rod 14 will be released from the limiting and fixing of the second discharge pipe 9, and then rotate the faucet 10, the faucet 10 drives the second discharge pipe 9 to rotate, and then the upper end of the second discharge pipe 9 moves to the inside of the extraction liquid, and after the faucet 10 is opened, the extraction liquid is discharged through the second discharge pipe 9 and the faucet 10.

[0034] Because the device shell 1 is of transparent material, the staff can observe the inside during rotation, avoiding that the second discharge pipe 9 will rotate to the inside of the lower layer of sulfuric acid, after the extraction liquid is taken out, the switch valve 7 is opened, and then the lower layer of sulfuric acid is discharged through the first discharge pipe 6, and at the same time, because the sulfuric acid will sink during stratification, the sulfuric acid is also deposited in the first discharge pipe 6 during stratification, after the discharge is completed, the faucet 10 is rotated, and then the faucet 10 drives the second discharge pipe 9 to recover, and then the second discharge pipe 9 moves to the position of the fixed insertion rod 14, at this time the control block 13 is pulled upwards, the control block 13 drives the fixed insertion rod 14 to move upwards, and then the fixed insertion rod 14 moves to the inside of the second discharge pipe 9, and then the second discharge pipe 9 is limited and fixed and sealed, avoiding that the mixed liquid enters the inside of the second discharge pipe 9 during shaking.

[0035] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A kind of pesticide residue detection purifying device, including device shell (1), the upper side of device shell (1) is fixedly connected with feed pipe (2), feed pipe (2) is connected with the inside of device shell (1); The lower side of the device shell (1) is fixedly connected with a first discharge pipeline (6), the first discharge pipeline (6) is communicated with the inside of the device shell (1), characterized in that: Separation mechanism is provided on the device shell (1), and the extraction liquid can be taken out by not holding the device shell (1) and pouring; Separation mechanism includes fixed block (8), second discharge pipe (9), faucet (10), sealing ring groove (11), sealing ring (12), control block (13), fixed plug (14) and two springs (15).

2. The purification device for pesticide residue detection according to claim 1, characterized in that: The lower side of the device shell (1) is provided with support base (3), and the lower side of support base (3) is fixedly connected with support leg (4); The lower side of support base (3) is provided with connecting port (5), connecting port (5) extends through the upper side of support base (3), and the first discharge pipe (6) is provided with switch valve (7).

3. The purification device for pesticide residue detection according to claim 1, characterized in that: The fixed block (8) is fixedly connected to the front side of the outer surface of the device shell (1), and the second discharge pipe (9) is arranged in the inside of the device shell (1). The shape of the second discharge pipe (9) is L-shaped, and the front end of the second discharge pipe (9) is rotatably penetrated through the device shell (1) and the fixed block (8).

4. The purification device for pesticide residue detection according to claim 1, characterized in that: The faucet (10) is fixedly connected to the front end of the second discharge pipe (9), and the sealing ring groove (11) is arranged in the inside of the fixed block (8). The sealing ring (12) is fixedly sleeved on the outer surface of the second discharge pipe (9).

5. The purification device for pesticide residue detection according to claim 4, characterized in that: The sealing ring (12) is rotatably connected in the inside of the sealing ring groove (11), the control block (13) is arranged on the upper side of the device shell (1), and the fixed plug (14) is fixedly connected to the lower side of the control block (13). The lower end of the fixed plug (14) is slidably penetrated into the inside of the device shell (1).

6. The purification device for pesticide residue detection according to claim 5, characterized in that: The lower end of the fixed plug (14) is slidably extended into the inside of the second discharge pipe (9), and the two springs (15) are fixedly connected to the lower side of the control block (13). The two springs (15) are respectively arranged on the left and right sides of the fixed plug (14), and the lower ends of the two springs (15) are fixedly connected to the upper side of the device shell (1).

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