Device for detecting content of n-pentane in water

Abstract

The utility model belongs to the field of detection, particularly relates to a device for detecting the content of n-pentane in water, and provides a device for simplifying operation and improving detection efficiency aiming at the problems that the existing detection process is complicated and is easily influenced by operation errors and environmental interference. Through linkage design of the pistons and the piston shafts, simultaneous control of movement of the two pistons through single operation is realized, sample liquid pretreatment steps are simplified, air bags are driven to be compressed and released through piston movement, to-be-detected sample liquid and extraction liquid are automatically mixed, an additional mixing device is not needed, the detection efficiency is further improved, meanwhile, the sealing performance of the device is enhanced through design, and the detection cost is reduced. According to the utility model, the detection process is simplified, and the detection stability and accuracy are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection technical field especially relates to a detection device for n-pentane content in water quality. BACKGROUND

[0002] Today, environmental protection and water quality management are increasingly valued, and water quality detection has become an important means to ensure water safety, prevent pollution and evaluate ecological environment quality. As a common organic compound, n-pentane is widely present in natural water bodies and industrial wastewater, and its content is directly related to the ecological safety of water bodies and human health.

[0003] At present, the detection method of n-pentane content in water quality mainly depends on laboratory analysis, such as gas chromatography, etc. However, the implementation process of these methods is complicated and time-consuming, especially in the sample pretreatment stage before detection. The whole pretreatment process before detection not only has many steps, but also is easily affected by operation errors, environmental interference and other factors, which makes it difficult to guarantee the stability and accuracy of the detection results. Therefore, a detection device for n-pentane content in water quality is proposed. SUMMARY

[0004] The utility model aims at solving the shortcomings that there are many process steps in the prior art, and it is easily affected by operation errors, environmental interference and other factors, which leads to the difficulty in guaranteeing the stability and accuracy of the detection results, and proposes a detection device for n-pentane content in water quality.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A device for detecting the content of normal pentane in water quality, comprising a gas chromatograph and an injection mechanism, wherein the injection mechanism comprises an empty cylinder 1 and an empty cylinder 2, wherein a connecting piece is fixedly connected between the circumferential outer walls of the empty cylinder 1 and the empty cylinder 2, a through hole 1 is provided at the top center of the empty cylinder 1, a through hole 2 is provided at the top center of the empty cylinder 2, a nipple is fixedly connected to the bottom of the empty cylinder 1, a piston 1 is slidably connected to the circumferential inner wall of the empty cylinder 1, the circumferential outer wall of the piston 1 is tightly connected to the circumferential inner wall of the empty cylinder 1, a piston shaft 1 is fixedly connected to the top of the piston 1, the piston shaft 1 is slidably connected in the through hole 1, a piston handle 1 is fixedly connected to the top of the piston shaft 1, a partition is fixedly connected to the middle of the circumferential inner wall of the empty cylinder 2, a through hole 3 is provided at the top center of the partition, The bottom of the circumferential inner wall of the hollow cylinder 2 is slidably connected with a piston 2, and the circumferential outer wall of the piston 2 is tightly connected to the circumferential inner wall of the hollow cylinder 2. A connecting rod 2 is fixedly connected at the top center of the piston 2, and the circumferential outer wall of the connecting rod 2 is slidably connected to the circumferential inner wall of the through hole 3. The circumferential outer wall of the connecting rod 2 is tightly connected to the circumferential inner wall of the through hole 3. The circumferential outer wall of the connecting rod 2 is sleeved with a spring, and the spring is fixedly connected between the bottom of the partition and the top of the piston 2. The top of the connecting rod 2 is fixedly connected with a piston shaft 2, and the piston shaft 2 is slidably connected in the through hole 2. The top of the piston shaft 2 is fixedly connected with a connecting rod 1, and the top of the connecting rod 1 is fixedly connected with a piston handle 2. A cross groove is provided on one side of the top of the piston handle 2, and the piston shaft 1 is slidably connected in the cross groove.

[0007] In a possible design, a through water channel and a receiving groove are respectively provided inside the connecting member, and the water channel and the receiving groove are connected. One end of the water channel is connected to the middle of the circumferential outer wall of the hollow cylinder 2, and the other end of the water channel is connected to the bottom of the circumferential outer wall of the hollow cylinder 1. An air bag for opening and closing the water channel is provided in the receiving groove, and the air inlet of the air bag is connected to the bottom of the circumferential outer wall of the hollow cylinder 2.

[0008] In a possible design, a sealing gasket for sealing is fixedly connected to the bottom of the circumferential outer wall of the connecting rod 1. When there is no external force interfering with the device, the sealing gasket is tightly connected to the through hole 2.

[0009] In a possible design, a plurality of exhaust holes for air intake and exhaust are provided on the circumferential outer wall of the hollow cylinder 2, and the plurality of exhaust holes are all located below the partition.

[0010] In a possible design, the first empty cylinder and the second empty cylinder are both made of glass.

[0011] In a possible design, the outer wall top of the empty cylinder one, the empty cylinder two and the connecting piece is fixedly connected with a same cylinder ear, a placing rack for placing the device is arranged below the cylinder ear, and the periphery outer wall of the nipple is clamped with a needle.

[0012] In the application, when people need to use the device to detect water quality, first pull the piston handle two, drive the sealing gasket to move upward and separate from the empty cylinder two through the connecting rod one, then inject enough extraction liquid into the empty cylinder two, then reset the device, then continue to pull the piston handle two, then the piston handle two drives the piston shaft one to move upward and in turn drives the piston one to move upward, then the sample liquid to be detected is sucked into the empty cylinder one through the nipple, at the same time, the piston two is driven to move upward by the connecting rod one, the piston shaft two and the connecting rod two, when the piston two no longer blocks the air inlet of the air bag, the air in the air bag is sucked into the empty cylinder two to shrink the air bag, then the water channel in the connecting piece is communicated, the upward movement of the piston one sucks the extraction liquid in the empty cylinder two into the empty cylinder one through the water channel, and the mixing of the sample liquid to be detected and the extraction liquid is completed, when the appropriate mixed liquid is sucked, stop pulling the piston handle two, the piston two moves downward under the elastic force of the spring and compresses the air in the empty cylinder two into the air bag, then the air bag expands and closes the water channel, then the device is placed on the placing rack to wait for the mixed liquid to be separated by gravity, when the separation is completed, the needle is installed on the nipple, and the extraction liquid below in the empty cylinder one is injected into the gas chromatograph through the needle.

[0013] In the utility model, the detection device for the content of n-pentane in water quality, through the cooperation of the piston one and the piston two, the sliding connection of the piston shaft one and the piston shaft two in the through hole and the cross slide groove, the user can control the up and down movement of the two pistons through single operation, the operation that can need multiple steps and tools in the traditional method is completed in one key, so that the sample liquid pretreatment step before detection is simplified, and the detection efficiency is improved significantly.

[0014] In the utility model, the detection device for the content of n-pentane in water quality, through the air bag and the water channel structure arranged in the connecting piece, the opening and closing of the water channel can be controlled through the compression and release of the air bag when the sample liquid to be detected is extracted, the automatic mixing of the sample liquid to be detected and the extraction liquid is realized, the detection step is further simplified, and no additional mixing device or operation is needed, and the detection efficiency is further improved.

[0015] In the utility model, the detection device for the content of n-pentane in water quality, through the sealing gasket, the extraction liquid leakage problem in the non-detection time can be effectively prevented, and the overall sealing performance of the device is improved.

[0016] The utility model discloses a can make user through single operation control two pistons's up and down movement simultaneously, let the operation that can need multiple steps and tool to complete in traditional method, can be one button type and complete, thereby simplify the sample solution pretreatment step before detection, improve detection efficiency significantly, can be in the extraction of sample solution of detection, through the compression and release control of water channel of air bag opening and closing, realize the automatic mixing of sample solution and extraction liquid, further simplify the detection step, need not additional mixing device or operation, further improve the detection efficiency, can also effectively prevent the extraction liquid leakage problem in non - detection time, improve the overall sealing performance of device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic diagram for the detection device for the content of n-pentane in water quality that the utility model proposes;

[0018] Figure 2 It is the whole structure schematic diagram of injection mechanism in the detection device for the content of n-pentane in water quality that the utility model proposes;

[0019] Figure 3 It is the partial sectional view of injection mechanism in the detection device for the content of n-pentane in water quality that the utility model proposes;

[0020] Figure 4 It is the partial explosion view of injection mechanism in the detection device for the content of n-pentane in water quality that the utility model proposes;

[0021] Figure 5 It is Figure 4 The local enlarged view of A in the middle.

[0022] In the drawing: 1, empty cylinder one;2, empty cylinder two;3, connecting piece;4, nipple;5, piston shaft one;6, piston handle one;7, piston handle two;8, connecting rod one;9, sealing pad;10, cylinder ear;11, piston shaft two;12, baffle;13, connecting rod two;14, piston two;15, spring;16, air bag;17, piston one;18, cross slide;19, exhaust hole;20, water channel;21, placing rack;22, needle;23, through hole one;24, through hole two;25, through hole three;26, gas chromatograph. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0024] Embodiment 1

[0025] Reference Figures 1-5The utility model provides a detection device, including gas chromatograph 26 and injection mechanism, gas chromatograph 26 is the gas chromatograph of model Yokogawa GC 8000, and injection mechanism includes empty cylinder one 1 and empty cylinder two 2, both are transparent and corrosion -resistant glass material to ensure chemical stability and transparency, facilitate the observation inside liquid change, and the circumferential outer wall between empty cylinder one 1 and empty cylinder two 2 is fixedly connected through connecting piece 3, connecting piece 3 is made of corrosion -resistant material, is equipped with water channel 20 and containing groove in the inside, one end of water channel 20 is connected with the middle part of empty cylinder two 2, the other end is connected with the bottom of empty cylinder one 1, is used for realizing the liquid flow between two empty cylinders, the bottom of empty cylinder one 1 is fixedly connected with nipple 4 for installing needle 22, and piston one 17 is slidably installed on the circumferential inner wall of empty cylinder one 1, ensure that the circumferential outer wall of piston one 17 is tightly connected with the circumferential inner wall of empty cylinder one 1, prevent liquid leakage, piston one 17 top passes through the hole one 23 of piston shaft one 5 and fixedly connected piston handle one 6, similarly, piston two 14 is slidably installed on the circumferential inner wall bottom of empty cylinder two 2, and its top passes through the hole three 25 on the partition 12 of connecting rod two 13, and spring 15 is set on connecting rod two 13, and spring 15 both ends are fixed at the bottom of partition 12 and the top of piston two 14 respectively to provide reset force, and the top of connecting rod two 13 passes through the hole two 24 of piston shaft two 11 and is connected to connecting rod one 8, and the top of connecting rod one 8 is fixed piston handle two 7, especially, the cross slide groove 18 is set on the top side of piston handle two 7, and piston shaft one 5 is slidably connected to realize the linkage of two pistons, and the air bag 16 is installed in the containing groove of connecting piece 3, and its air inlet is connected to the bottom of the circumferential outer wall of empty cylinder two 2 through pipeline to control the opening and closure of water channel 20, and simultaneously, a plurality of exhaust holes 19 are formed below the circumferential outer wall of empty cylinder two 2 to discharge or suck air when needed to adjust internal air pressure.

[0026] The present application can be used in the field of water quality detection, and can also be used in other fields applicable to the present application.

[0027] Example 2

[0028] Reference Figures 1-5 On the basis of example one, improve: a detection device for the content of n-pentane in water quality is applied to the field of water quality detection, for the convenience of carrying and operating the whole device, the same cylinder ear 10 is fixedly connected to the top of the outer wall of empty cylinder one 1, empty cylinder two 2 and connecting piece 3, and placing rack 21 is arranged below the cylinder ear for supporting the whole device.

[0029] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A device for detecting the content of n-pentane in water quality, comprising a gas chromatograph (26) and an injection mechanism, characterized in that, The injection mechanism comprises a first empty cylinder (1) and a second empty cylinder (2), a connecting piece (3) is fixedly connected between the circumferential outer walls of the first empty cylinder (1) and the second empty cylinder (2), a through hole (23) is formed in the top center of the first empty cylinder (1), a through hole (24) is formed in the top center of the second empty cylinder (2), a nipple (4) is fixedly connected to the bottom of the first empty cylinder (1), a piston (17) is slidably connected to the circumferential inner wall of the first empty cylinder (1), the circumferential outer wall of the piston (17) is tightly connected with the circumferential inner wall of the first empty cylinder (1), a piston shaft (5) is fixedly connected to the top of the piston (17), the piston shaft (5) is slidably connected in the through hole (23), a piston handle (6) is fixedly connected to the top of the piston shaft (5), a partition plate (12) is fixedly connected to the circumferential inner wall of the second empty cylinder (2), a through hole (25) is formed in the top center of the partition plate (12), a piston (14) is slidably connected to the bottom of the circumferential inner wall of the second empty cylinder (2), the circumferential outer wall of the piston (14) is tightly connected with the circumferential inner wall of the second empty cylinder (2), a connecting rod (13) is fixedly connected to the top center of the piston (14), the circumferential outer wall of the connecting rod (13) is slidably connected to the circumferential inner wall of the through hole (25), the circumferential outer wall of the connecting rod (13) is tightly connected with the circumferential inner wall of the through hole (25), a spring (15) is sleeved on the circumferential outer wall of the connecting rod (13), the spring (15) is fixedly connected between the bottom of the partition plate (12) and the top of the piston (14), a piston shaft (11) is fixedly connected to the top of the connecting rod (13), the piston shaft (11) is slidably connected in the through hole (24), a connecting rod (8) is fixedly connected to the top of the piston shaft (11), a piston handle (7) is fixedly connected to the top of the connecting rod (8), a through cross-shaped sliding groove (18) is formed in the top side of the piston handle (7), and the piston shaft (5) is slidably connected in the cross-shaped sliding groove (18).

2. The device for detecting the content of n-pentane in water quality according to claim 1, characterized in that, The inner part of the connecting piece (3) is respectively provided with a water channel (20) and a containing groove, the water channel (20) and the containing groove are communicated, one end of the water channel (20) is communicated in the middle of the circumferential outer wall of the second empty cylinder (2), the other end of the water channel (20) is communicated in the bottom of the circumferential outer wall of the first empty cylinder (1), the containing groove is provided with an air bag (16) for opening and closing the water channel (20), and the air inlet of the air bag (16) is communicated in the bottom of the circumferential outer wall of the second empty cylinder (2).

3. The device for detecting the content of n-pentane in water quality according to claim 1, characterized in that, The circumferential outer wall of the connecting rod (8) is fixedly connected with a sealing gasket (9) for sealing, when the device is not intervened by external force, the sealing gasket (9) is tightly connected with the through hole (24).

4. The device for detecting the content of n-pentane in water quality according to claim 1, characterized in that, The circumferential outer wall of the second empty cylinder (2) is provided with a plurality of exhaust holes (19) for air intake and exhaust, and the plurality of exhaust holes (19) are located below the partition plate (12).

5. The device for detecting the content of n-pentane in water quality according to claim 1, characterized in that, The first empty cylinder (1) and the second empty cylinder (2) are made of glass.

6. The device for detecting the content of n-pentane in water quality according to claim 1, characterized in that, The outer wall top of the empty cylinder one (1), empty cylinder two (2) and connecting piece (3) is fixedly connected with the same cylinder ear (10), the lower side of the cylinder ear (10) is provided with a placing rack (21) for placing device, the circumference outer wall of the nipple (4) is clamped with a needle (22).

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