Pretreatment device for phenol detection

Abstract

The invention discloses a pre-treatment device for phenol detection, comprising: a container, a liquid outlet pipe is provided at the bottom, a liquid inlet pipe and an air hole are provided at the top, and a valve is provided on the liquid outlet pipe; an extraction component, comprising a rotating shaft, a driving member for driving the rotating shaft to rotate, and at least one extraction unit, wherein the extraction unit comprises: a pair of annular tracks, which are arranged on the rotating shaft up and down, the bottom of the annular tracks is in an uneven state, and the bottom of the annular tracks is provided with through holes; a plurality of pairs of movable rods are arranged on the container wall at intervals along the circumferential direction, one end of each pair of movable rods is hinged on the same hinge shaft, and a sliding ball is provided on the other end, a pair of sliding balls are respectively limited and accommodated in a pair of annular tracks, the axial direction of the hinge shaft is perpendicular to the axial direction of the rotating shaft, a plurality of rowing blades are arranged at intervals on the movable rods, and a plurality of guide holes are provided on the rowing blades. The invention has the beneficial effects of enhancing the collision between the water sample and the extraction solvent, increasing the contact area, and improving the extraction efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of phenolic substance pollution detection, and more specifically, to a pre-treatment device for phenolic substance detection. Background Art

[0002] Due to oil extraction, building materials production, resin production, plastic production, etc., a lot of phenol-containing polluted waste liquids are produced, which are harmful pollutants in water bodies. However, after being discharged into the water body, the content of phenol compounds in the water body is low. According to the detection experience, it is usually below 200μg / L. For detection, the concentration is too low and cannot be directly detected. Pre-treatment, such as extraction, is required to increase the concentration and then detect. At present, the capacity of the water sample extraction bottle used in the laboratory is small. For example, the maximum capacity of the conventional separatory funnel is only 2000ml, which cannot meet the extraction requirements. If the volume of the separatory funnel is increased, such as to 5000ml, it is difficult for the tester to shake it effectively, and the operation is difficult. The container for the water sample requires 100L, which is even more difficult to shake manually. The existing industrial extraction equipment is processed in tons, because it is completely unsuitable for laboratory testing. Therefore, designing a pre-treatment setting suitable for the detection of phenols in water quality is a realistic technical problem that needs to be solved. Summary of the invention

[0003] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0004] In order to achieve these purposes and other advantages according to the present invention, a pretreatment device for phenol detection is provided, comprising:

[0005] A container is arranged on a bracket, wherein a liquid outlet pipe is arranged at the bottom of the container, a liquid inlet pipe and an air hole are arranged at the top of the container, a valve is arranged on the liquid outlet pipe, and a pipe cover is arranged on the upper cover of the liquid inlet pipe;

[0006] The extraction assembly comprises a rotating shaft vertically arranged in the container, a driving member for driving the rotating shaft to rotate, and at least one extraction unit arranged in the container, wherein the extraction unit comprises:

[0007] A pair of annular tracks, the pair of annular tracks are arranged on the rotating shaft up and down, the annular tracks are arranged coaxially with the rotating shaft, the bottom of the annular tracks is uneven, and the bottom of the annular tracks is provided with a through hole that passes through up and down;

[0008] A plurality of pairs of movable rods are arranged on the container wall at intervals along the circumferential direction, one end of each pair of movable rods is hinged on the same hinge shaft, and a sliding ball is provided on the other end, the sliding balls on a pair of movable rods are respectively limited and accommodated in a pair of annular tracks, the axial direction of the hinge shaft is perpendicular to the axial direction of the rotating shaft, a plurality of rowing blades are arranged at intervals on the movable rods, and a plurality of guide holes are provided on the rowing blades.

[0009] Preferably, it further comprises a spiral blade, which is sleeved on the rotating shaft and located below the extraction component.

[0010] Preferably, the outer side of the spiral blade is close to the inner wall of the container.

[0011] Preferably, it further comprises a shearing blade, wherein the shearing blade is sleeved on the rotating shaft and is located above the extraction component.

[0012] Preferably, the shearing blade is in a truncated cone shape.

[0013] Preferably, the length direction of the rowing blade is perpendicular to the axial direction of the movable rod, the rowing blade is of a centrally symmetrical shape, and both ends of the rowing blade are twisted from the center at an angle of 5 to 30°.

[0014] Preferably, the guide hole is in an elliptical shape with large ends and a small middle.

[0015] Preferably, it further comprises a blocking plate, which is arranged in the container in an inclined manner and is located below the air hole, and a long strip-shaped leakage hole is provided at the bottom of the blocking plate.

[0016] Preferably, the driving member comprises:

[0017] A casing, which is arranged on the top of the container, wherein the rotating shaft is rotatably arranged on the bottom of the casing, and a worm gear is fixed on the upper end of the rotating shaft;

[0018] A worm, two ends of which are rotatably arranged on both sides of the housing, and the worm is engaged with the worm wheel;

[0019] A driven gear coaxially sleeved on the shaft of the worm;

[0020] A main shaft is rotatably arranged on one side of the casing, a driving gear is coaxially sleeved on one end of the main shaft located inside the casing, the driving gear is meshed with the driven gear, a hand wheel is arranged on one end of the main shaft located outside the casing, a handle is arranged on the hand wheel, wherein the number of teeth of the driving gear is greater than the number of teeth of the driven gear.

[0021] Preferably, it further comprises a plurality of fixing rods, one end of which is circumferentially spaced on the container wall and the other end is fixed on the same annular sleeve, and the lower end of the rotating shaft is rotatably fixed on the annular sleeve.

[0022] The present invention includes at least the following beneficial effects: by driving the rotating shaft to rotate, the movable rod is eventually driven to move up and down and the blades are moved up and down, so as to shear and guide the water sample and the extraction solvent, increase the collision effect between the water sample and the extraction solvent, and achieve the effect of significantly increasing the contact area between the water sample and the extraction solvent in a short time, thereby improving the extraction efficiency.

[0023] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the pre-treatment device according to one of the technical solutions of the present invention;

[0025] Figure 2 A detailed view of the extraction component according to one of the technical solutions of the present invention;

[0026] Figure 3 A cross-sectional view of the driving member according to one of the technical solutions of the present invention;

[0027] Figure 4 This is a detailed view of the rowing blade according to one of the technical solutions of the present invention. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0029] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, the orientation or positional relationship indicated by the terms is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] like Figures 1 to 4 As shown, the present invention provides a pre-treatment device for phenol detection, comprising:

[0031] The container 1 is arranged on a bracket 2. A liquid outlet pipe 11 is arranged at the bottom of the container 1. A liquid inlet pipe and an air hole 13 are arranged at the top of the container 1. A valve is arranged on the liquid outlet pipe 11. A pipe cover 12 is arranged on the upper cover of the liquid inlet pipe. The volume of the container 1 can be 5 to 120L, which meets the sampling needs of water samples. Both the water sample and the extraction solvent can enter the container 1 through the liquid outlet pipe 11. The air hole 13 is used to timely discharge the gas generated during the extraction process (gas is generated during the extraction of oil and water. If it is not discharged in time, it will cause the gas pressure in the container 1 to increase and cause safety hazards.). The liquid outlet pipe 11 is used to guide the water sample to the subsequent oil-liquid separation device for separation and detection after the water sample is extracted.

[0032] The extraction assembly includes a rotating shaft 3 vertically arranged in the container 1, a driving member 4 driving the rotating shaft 3 to rotate, and at least one extraction unit 5 arranged in the container 1. The driving member 4 can use a motor reducer to realize the rotation drive of the rotating shaft 3, or can use a hand wheel 47 fixed to the rotating shaft 3, and manually rotate the hand wheel 47 to drive the rotating shaft 3 to rotate.

[0033] The extraction unit 5 comprises:

[0034] A pair of annular tracks 51 are arranged on the rotating shaft 3 from top to bottom. The annular tracks 51 are arranged coaxially with the rotating shaft 3. The bottom of the annular tracks 51 is uneven. The bottom of the annular tracks 51 is provided with through holes that penetrate from top to bottom. The rotation of the rotating shaft 3 can drive the annular tracks 51 to rotate, and the liquid in the annular tracks 51 flows out from the through holes to reduce the residue. For example, the bottom surface of the annular tracks 51 is arranged in a wave shape, and the distance from the crest to the trough of two adjacent waves is arranged differently, so that an uneven bottom is formed.

[0035] A plurality of pairs of movable rods 52 are arranged on the wall of the container 1 at intervals along the circumferential direction, one end of each pair of movable rods 52 is hinged on the same hinge shaft 53, and a sliding ball 54 is provided on the other end. The other end of the movable rod 52 can rotate up and down around the hinge shaft 53, that is, the sliding ball 54 can rotate up and down around the hinge shaft 53. The sliding balls 54 on a pair of movable rods 52 are respectively limited and accommodated in a pair of annular tracks 51, and the sliding balls 54 have a certain vertical and left and right movable space in the annular track 51. The axial direction of the hinge shaft 53 is perpendicular to the axial direction of the rotating shaft 3. A plurality of rowing blades 55 are arranged at intervals on the movable rod 52, and a plurality of guide holes 56 are provided on the rowing blades 55. When the annular track 51 rotates, the sliding ball 54 moves up and down under the action of the uneven bottom of the annular track 51, thereby driving the movable rod 52 to move up and down, thereby driving the sliding blades 55 to move up and down, and the sliding blades 55 on each pair of movable rods 52 form movements towards or away from each other, thereby promoting the interaction between the water sample and the extraction solvent, increasing the contact area in a short time, and the guide hole 56 has the function of further promoting the contact area between the water sample and the extraction solvent, thereby improving the extraction efficiency.

[0036] In the above technical solution, the rotating shaft 3 is driven to rotate by starting the driving member 4, thereby driving the annular track 51 to rotate. The uneven characteristics of the annular track 51 drive the sliding ball 54 contained therein to move up and down, and the sliding ball 54 drives the movable rod 52 to move up and down. The movable rod 52 drives the rowing blades 55 to move up and down to shear the water sample and the extraction solvent. The shearing trajectories of the rowing blades 55 on the pair of movable rods 52 are sometimes opposite, sometimes opposite, and sometimes in the same direction, increasing the collision between the water sample and the extraction solvent, which can achieve the effect of significantly increasing the contact area between the water sample and the extraction solvent in a short time, thereby improving the extraction efficiency. The design of the guide hole 56 further increases the shearing and diversion effect of the rowing blades 55 on the water sample and the extraction solvent, further increasing the contact area between the water sample and the extraction solvent in a short time, thereby further improving the extraction efficiency. Compared with setting a stirring blade in the container 1, its extraction efficiency is significantly improved.

[0037] In another technical solution, a spiral blade 6 is further included, and the spiral blade 6 is sleeved on the rotating shaft 3 and is located below the extraction component. Since the shape of the container 1 is usually an inverted cone at the bottom, this is conducive to a more thorough outflow of the liquid. However, a defect is also introduced, that is, the liquid in this part is not easily sheared or diverted, which will affect the extraction efficiency as a whole. The spiral blade 6 is provided, and when the rotating shaft 3 rotates, the liquid is transported upward in a spiral, so that the liquid in this part can be transported to the area where the extraction unit 5 is located, thereby improving the extraction efficiency.

[0038] In another technical solution, the outer side of the spiral blade 6 is close to the inner wall of the container 1, so that the spiral upward conveying effect on the liquid is stronger.

[0039] In another technical solution, a shearing blade 7 is further included, and the shearing blade 7 is sleeved on the rotating shaft 3 and located above the extraction component. The shearing blade 7 is arranged above the extraction component to timely shear the upward liquid caused by the upward movement of the paddling blade 55, thereby improving the extraction efficiency. When a spiral blade 6 is provided, the spiral upward conveying effect of the spiral blade 6 can be balanced, and the water sample and the extraction solvent moving upward can be continuously sheared, thereby improving the extraction efficiency.

[0040] In another technical solution, the shearing blade 7 is in a truncated cone shape, which has a longer shearing surface in a limited space and increases the shearing action surface.

[0041] In another technical solution, the length direction of the paddling blade 55 is perpendicular to the axial direction of the movable rod 52, the paddling blade 55 is of a central symmetrical shape, and the two ends of the paddling blade 55 are twisted from the center, and the twisting angle is 5 to 30 degrees. After twisting, it is not only beneficial to increase the paddling area of ​​the paddling blade 55 within a limited space, but also the complexity of the paddling trajectory of the paddling blade 55 promotes the mutual contact between the water sample and the extraction solvent, and improves the extraction efficiency.

[0042] In another technical solution, the guide hole 56 is elliptical in shape with large ends and a small middle. When the water sample and the extraction solvent pass through the guide hole 56, the large ends and small middle shape form different pressures on the liquids passing through, which can promote the interaction between the liquids, thereby improving the extraction efficiency.

[0043] In another technical solution, a blocking plate 14 is further included, which is disposed in an upwardly inclined manner in the container 1 and is located below the air hole 13. A long leak hole is provided at the bottom of the blocking plate 14. The water sample and the extraction solvent are prevented from splashing out from the air hole 13, and the water sample and the extraction solvent that enter the top of the blocking plate 14 can flow back to the bottom through the leak hole.

[0044] In another technical solution, the driving member 4 includes:

[0045] A housing 41 is disposed on the top of the container 1, wherein the rotating shaft 3 is rotatably disposed on the bottom of the housing 41, and a worm gear 42 is fixed to the upper end of the rotating shaft 3;

[0046] A worm 43, two ends of which are rotatably disposed on both sides of the housing 41, and the worm 43 is meshed with the worm wheel 42;

[0047] A driven gear 44, which is coaxially sleeved on the shaft of the worm 43;

[0048] A main shaft 45 is rotatably provided on one side of the housing 41. A driving gear 46 is coaxially sleeved on one end of the main shaft 45 located inside the housing 41. The driving gear 46 meshes with the driven gear 44. A hand wheel 47 is provided on one end of the main shaft 45 located outside the housing 41. A handle 48 is provided on the hand wheel 47. The number of teeth of the driving gear 46 is greater than the number of teeth of the driven gear 44.

[0049] In the above technical solution, the handle 48 is manually rotated to drive the hand wheel 47 to rotate, and the rotation of the hand wheel 47 drives the main shaft 45 to rotate, the main shaft 45 drives the driving gear 46 to rotate, the driving gear 46 drives the driven gear 44 to rotate, the driven gear 44 drives the worm 43 to rotate, and the worm 43 drives the worm wheel 42 to rotate, and finally realizes the rotation of the rotating shaft 3. Through the setting of the driving gear 46 and the driven gear 44, manual slow rotation can be achieved, and the rotating shaft 3 is driven to rotate quickly, which has a layer of labor-saving effect. The hand wheel 47 and the handle 48 are conducive to the human body's force application method, which has another layer of labor-saving effect. The worm 43 and the worm wheel 42 have a self-locking function, so the rotating shaft 3 can be prevented from rotating in the opposite direction, thereby ensuring that when in use, the spiral blade 6 rotates in a spiral upward conveying manner to reduce misoperation. Through the structural setting of the above-mentioned driving member 4, the pre-treatment of large-volume water samples can be easily achieved manually.

[0050] In another technical solution, a plurality of fixing rods 15 are further included, one end of each of the fixing rods 15 is arranged on the wall of the container 1 at intervals along the circumferential direction, and the other end is fixed to the same annular sleeve 16, and the lower end of the rotating shaft 3 is rotatably fixed to the annular sleeve 16. The fixing rods 15 are arranged at the bottom to improve the stability of the rotating shaft 3. Preferably, there are three fixing rods 15, and they are arranged in an inverted truncated cone shape, which is conducive to reducing liquid residue.

[0051] In order to observe the extraction process, an observation window can be provided on the container 1 to facilitate observation of the movement of the extraction components, the spiral blades 6, the shear blades 7 and the liquid.

[0052] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A pre-treatment device for phenol detection, characterized in that: include: A container is arranged on a bracket, wherein a liquid outlet pipe is arranged at the bottom of the container, a liquid inlet pipe and an air hole are arranged at the top of the container, a valve is arranged on the liquid outlet pipe, and a pipe cover is arranged on the upper cover of the liquid inlet pipe; The extraction assembly comprises a rotating shaft vertically arranged in the container, a driving member for driving the rotating shaft to rotate, and at least one extraction unit arranged in the container, wherein the extraction unit comprises: A pair of annular tracks, the pair of annular tracks are arranged on the rotating shaft up and down, the annular tracks are arranged coaxially with the rotating shaft, the bottom of the annular tracks is uneven, and the bottom of the annular tracks is provided with a through hole that passes through up and down; A plurality of pairs of movable rods are arranged on the container wall at intervals along the circumferential direction, one end of each pair of movable rods is hinged on the same hinge shaft, and a sliding ball is provided on the other end, the sliding balls on a pair of movable rods are respectively limited and accommodated in a pair of annular tracks, the axial direction of the hinge shaft is perpendicular to the axial direction of the rotating shaft, a plurality of rowing blades are arranged at intervals on the movable rods, and a plurality of guide holes are provided on the rowing blades.

2. The pre-treatment device for phenol detection according to claim 1, characterized in that: It also includes a spiral blade, which is sleeved on the rotating shaft and located below the extraction component.

3. The pre-treatment device for phenol detection according to claim 2, characterized in that: The outer side of the spiral blade is close to the inner wall of the container.

4. The pre-treatment device for phenol detection according to claim 1, characterized in that: It also includes a shearing blade, which is sleeved on the rotating shaft and located above the extraction component.

5. The pre-treatment device for phenol detection according to claim 4, characterized in that: The shearing blade is in a frustum-like shape.

6. The pre-treatment device for phenol detection according to claim 1, characterized in that: The length direction of the rowing blade is perpendicular to the axial direction of the movable rod. The rowing blade is of a centrally symmetrical shape. Both ends of the rowing blade are twisted from the center, and the twisting angle is 5 to 30 degrees.

7. The pre-treatment device for phenol detection according to claim 1, characterized in that: The guide hole is in an elliptical shape with large ends and a small middle.

8. The pre-treatment device for phenol detection according to claim 1, characterized in that: The invention also comprises a blocking plate, which is arranged in the container in an inclined manner and is located below the air hole. A long strip-shaped leakage hole is arranged at the bottom of the blocking plate.

9. The pre-treatment device for phenol detection according to claim 1, characterized in that: The driving member comprises: A casing, which is arranged on the top of the container, wherein the rotating shaft is rotatably arranged on the bottom of the casing, and a worm gear is fixed on the upper end of the rotating shaft; A worm, two ends of which are rotatably arranged on both sides of the housing, and the worm is meshed with the worm wheel; A driven gear coaxially sleeved on the shaft of the worm; A main shaft is rotatably arranged on one side of the casing, a driving gear is coaxially sleeved on one end of the main shaft located inside the casing, the driving gear is meshed with the driven gear, a hand wheel is arranged on one end of the main shaft located outside the casing, a handle is arranged on the hand wheel, wherein the number of teeth of the driving gear is greater than the number of teeth of the driven gear.

10. The pre-treatment device for phenol detection according to claim 1, characterized in that: It also includes a plurality of fixing rods, one end of which is arranged on the container wall at intervals along the circumferential direction, and the other end is fixed on the same annular sleeve, and the lower end of the rotating shaft is rotatably fixed on the annular sleeve.

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