Safe sampling equipment for chemical wastewater detection

Abstract

The invention discloses a safe sampling device for chemical wastewater detection, which comprises a device shell and a device top cover, a plurality of sewage storage bottles are placed in the device shell, the top end of each sewage storage bottle is provided with an insertion port, the top end of the device shell is provided with a suction pump, and a water inlet of the suction pump is connected with a first suction pipe. A plug is arranged at the end, away from the suction pump, of the first suction pipe. A second suction pipe is connected to one side of the plug. A horizontal partition plate is arranged in the sewage storage bottle, and a butt joint pipe is arranged on the horizontal partition plate. The horizontal partition plate, the butt joint pipe and the peripheral water inlet holes are arranged in the sewage storage bottle, and the hoses with different lengths are matched, so that layered sampling of the wastewater pool at different depths can be realized. The filter connected with the second suction pipe effectively blocks solid impurities, and pipeline blockage or sample pollution is avoided; the independent communication structure of the water inlet hole and the second suction pipe ensures that samples at all depths do not interfere with each other in the collection process, and the sampling accuracy is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical wastewater detection, and particularly to a safe sampling device for chemical wastewater detection. Background Art

[0002] In the field of chemical wastewater detection, safe and accurate sampling is a key link to ensure the reliability of detection results. Existing chemical wastewater sampling devices usually have the following problems: First, when sampling wastewater at different depths, cross-contamination is likely to occur in each sampling channel, resulting in sample confusion; second, there is a lack of an effective impurity filtration device, and solid particles in the sewage may block the pipeline or affect the detection results; third, the sampling process relies on a complex power system or manual operation, with low efficiency and potential safety hazards; fourth, the fixing and docking structure of the sampling bottle is not precise enough, and liquid leakage or positioning deviation is likely to occur.

[0003] In addition, after sampling is completed with traditional devices, the disassembly and assembly process of the sampling bottle is cumbersome, it is difficult to achieve rapid replacement and batch sampling, and it cannot meet the high-frequency and multi-point detection requirements in chemical production. Therefore, there is an urgent need for a safe sampling device with a reasonable structural design, accurate sampling, and convenient operation to solve the deficiencies in the existing technology. Summary of the Invention

[0004] In order to solve the problems mentioned in the above background art, the present invention provides a safe sampling device for chemical wastewater detection.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme:

[0006] A safe sampling device for chemical wastewater detection includes a device housing and a device top cover. A plurality of sewage storage bottles are placed inside the device housing. An insertion port is provided at the top of the sewage storage bottle. A suction pump is provided at the top of the device housing. The water inlet of the suction pump is connected to a first suction pipe. One end of the first suction pipe away from the suction pump is provided with a plug, and a second suction pipe is connected to one side of the plug.

[0007] A horizontal partition is provided inside the sewage storage bottle. A docking pipe is provided on the horizontal partition. The docking pipe corresponds to the first suction pipe. A plurality of water inlet holes are opened around the docking pipe on the horizontal partition. The water inlet holes are communicated with the second suction pipe.

[0008] Preferably, one end of the second suction pipe extends to the outside of the device housing and is connected to a hose. A filter is provided at the end of the hose away from the second suction pipe. The bottom end of the docking pipe penetrates and extends below the horizontal partition and is connected to a U-shaped bend pipe.

[0009] Preferably, a lifting piston is provided inside the suction pump, a first one-way valve is installed in the first suction pipe, a drain pipe is fixed to the top end of the lifting piston, and the bottom end of the drain pipe penetrates through the lifting piston and is fixed with a second one-way piston.

[0010] Preferably, the first one-way valve ensures that sewage can only enter the suction pump unidirectionally, and the second one-way piston ensures that sewage can only flow into the drain pipe from bottom to top.

[0011] Preferably, a lifting drive box is provided at the top end of the device housing, a lifting plate is provided inside the lifting drive box, and the lifting plate is fixed to the drain pipe.

[0012] Preferably, a plurality of reciprocating lead screws are provided around the suction pump, the reciprocating lead screws penetrate through the lifting plate through threaded holes, and a first gear is fixed to the top end of the reciprocating lead screws.

[0013] Preferably, a drive rotating shaft is rotatably installed inside the lifting drive box, a second gear is fixed to the bottom end of the drive rotating shaft, and a plurality of first gears are all meshed with the second gear.

[0014] Preferably, the top end of the drive rotating shaft extends to the outside of the lifting drive box and is fixed with a hand wheel.

[0015] Preferably, a plurality of positioning pins are fixed to the bottom end of the device top cover, a plurality of positioning sleeves are fixed to the side surface of the device housing, the plurality of positioning pins penetrate through the plurality of positioning sleeves one by one, a toothed ring is rotatably installed on the inner wall of the bottom end of the device housing at the storage position of the sewage storage bottle, a plurality of clamping members are provided on the outer side of the toothed ring, the clamping members are arc-shaped elastic structures, and anti-slip protrusions are provided on the clamping members. A third gear is fixed to the installation rotating shaft of the clamping member, and a plurality of third gears are all meshed with the toothed ring.

[0016] Preferably, a fourth gear is rotatably installed at the central position of the inner wall of the bottom end of the device housing, one of each group of third gears is meshed with the fourth gear, a driving column is fixed to the top end of the fourth gear, a spiral guide groove is opened on the outer side of the driving column, and a horizontally arranged limiting rod is fixed to the bottom end of the device top cover through a connecting frame. One end of the limiting rod extends into the spiral guide groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. By arranging a horizontal partition, a docking pipe and peripheral water inlet holes in the sewage storage bottle, and cooperating with hoses of different lengths, stratified sampling of different depths of the wastewater pool can be realized. The filter connected to the second suction pipe effectively blocks solid impurities, avoiding blocking the pipeline or contaminating the sample; the independent communication structure between the water inlet hole and the second suction pipe ensures that samples at each depth do not interfere with each other during the sampling process, significantly improving the sampling accuracy.

[0019] 2. The lifting piston, the first one-way valve and the second one-way piston inside the suction pump form a one-way diversion system, ensuring that sewage can only enter the suction pump unidirectionally from the sewage storage bottle and is discharged through the drain pipe, avoiding backflow pollution. The design of the U-shaped bend ensures that sewage will not enter the docking pipe prematurely when the sewage storage bottle is not full, ensuring that the single-bottle sampling volume meets the standard before the next suction, and improving the reliability of sampling.

[0020] 3. The meshing structure of the reciprocating lead screw, the first gear and the second gear inside the lifting drive box realizes the reciprocating motion of the lifting piston by driving the handwheel, without the need for an additional power source, which is simple to operate, energy-saving and environmentally friendly. At the same time, the linkage design of the spiral guide groove on the outer side of the drive column and the limit rod enables the top cover of the device to automatically trigger the rotation of the toothed ring during the installation process. Through the arc-shaped elastic structure and anti-slip protrusions of the clamping member, the automatic clamping and positioning of the sewage storage bottle are realized, greatly improving the disassembly and assembly efficiency.

[0021] 4. The positioning pin of the device top cover cooperates with the positioning sleeve of the device housing to ensure the accurate docking of the plug and the socket of the sewage storage bottle, avoiding the risk of liquid leakage; the clamping member realizes synchronous centering and clamping through the meshing of the third gear and the toothed ring. Combined with the anti-slip protrusion design, the storage bottle is effectively fixed to prevent position deviation caused by vibration during the sampling process. The overall structure is compact and the operation is safe, meeting the multi-scenario sampling requirements of chemical wastewater. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 is a three-dimensional view of the present invention;

[0024] Figure 2 is a three-dimensional view of the present invention (omitting the outer shell of the lifting drive box);

[0025] Figure 3 is the front view of the present invention;

[0026] Figure 4 is Figure 3 the enlarged detailed view at position A in

[0027] Figure 5 is a schematic diagram of the internal structure of the device housing of the present invention;

[0028] Figure 6 is a schematic diagram of the cooperation relationship between the sewage storage bottle and the plug of the present invention;

[0029] Figure 7 For Figure 6 Magnified detail view of position B in the figure;

[0030] Figure 8 Cross-sectional view of the cooperation relationship between the sewage storage bottle and the plug of the present invention;

[0031] Figure 9 Cross-sectional view of the separated state of the sewage storage bottle and the plug of the present invention;

[0032] Figure 10 Magnified detail view of the position of the internal toothed ring of the device housing of the present invention;

[0033] Figure 11 Top view of the internal clamping member of the device housing of the present invention;

[0034] In the figure: 1. Device housing; 101. Device top cover; 102. Positioning pin; 103. Positioning sleeve; 2. Lifting drive box; 201. Reciprocating lead screw; 202. First gear; 203. Lifting plate; 204. Driving rotating shaft; 205. Second gear; 206. Handwheel; 3. Suction pump; 301. Lifting piston; 302. Second one-way piston; 303. First suction pipe; 304. Drain pipe; 305. Plug; 306. Second suction pipe; 4. Sewage storage bottle; 401. Socket; 402. Docking pipe; 403. Water inlet hole; 404. U-shaped bend pipe; 5. Toothed ring; 501. Clamping member; 502. Clamping member; 503. Anti-slip protrusion; 504. Fourth gear; 505. Driving column; 506. Spiral guide groove; 507. Connecting frame; 508. Limiting rod. Specific embodiments

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] Embodiment 1

[0037] Refer to Figure 1-11 , a safety sampling device for chemical wastewater detection, including a device housing 1 and a device top cover 101. A plurality of sewage storage bottles 4 are placed inside the device housing 1. A socket 401 is provided at the top end of the sewage storage bottle 4. A suction pump 3 is provided at the top end of the device housing 1. The water inlet of the suction pump 3 is connected to a first suction pipe 303. One end of the first suction pipe 303 away from the suction pump 3 is provided with a plug 305. One side of the plug 305 is connected to a second suction pipe 306;

[0038] Inside the sewage storage bottle 4, there is a horizontal partition 401. On the horizontal partition 401, there is a docking pipe 402, which corresponds to the first suction pipe 303. Around the docking pipe 402 on the horizontal partition 401, there are a plurality of water inlet holes 403, and the water inlet holes 403 are communicated with the second suction pipe 306.

[0039] By the operation of the suction pump 3, a negative pressure is formed inside the sewage storage bottle 4. One end of the second suction pipe 306 extends to the outside of the device housing 1 and is connected with a hose. At the end of the hose away from the second suction pipe 306, there is a filter. Each hose is put into the sewage to be sampled. The lengths of the hoses are different and form an arithmetic progression, which can sample the sewage at different depths. The filter can prevent the solid impurities in the sewage from being sucked into the sewage storage bottle 4. Since a negative pressure is formed inside the sewage storage bottle 4, the sewage passes through the hose and the second suction pipe 306 and enters the sewage storage bottle 4, and then flows into the sewage storage bottle 4 through the water inlet holes 403. Each sewage storage bottle 4 stores the sewage at different depths, and the flow channels of the sewage at each depth are isolated from each other and no cross-contamination will occur, which can effectively improve the accuracy of sampling.

[0040] The bottom end of the docking pipe 402 penetrates and extends below the horizontal partition 401 and is connected with a U-shaped bend pipe 404. The end of the U-shaped bend pipe 404 away from the plug 305 bends upward. This design can ensure that the sewage pumped into the sewage storage bottle 4 will not enter the U-shaped bend pipe 404 immediately. Only when the sewage storage bottle 4 is full of sewage, the sewage will enter the U-shaped bend pipe 404.

[0041] Embodiment 2

[0042] Refer to Figure 1-11 , the difference between this embodiment and Embodiment 1 is that inside the suction pump 3, there is a lifting piston 301. A first one-way valve is installed in the first suction pipe 303. At the top end of the lifting piston 301, there is a drain pipe 304. The bottom end of the drain pipe 304 penetrates the lifting piston 301 and is fixed with a second one-way piston 302. The first one-way valve ensures that the sewage can only enter the suction pump 3 unidirectionally, and the second one-way piston 302 ensures that the sewage can only flow into the drain pipe 304 from bottom to top;

[0043] When the lifting piston 301 moves downward, the gas or liquid below the lifting piston 301 will be discharged through the first suction pipe 303. When the lifting piston 301 moves upward, a vacuum is formed below the lifting piston 301, thereby generating a negative pressure, so that the gas or liquid in the sewage storage bottle 4 enters the suction pump 3 through the U-shaped bend pipe 404, the docking pipe 402 and the first suction pipe 303, making the inside of the sewage storage bottle 4 in a negative pressure state, so as to achieve the purpose of sucking sewage.

[0044] Embodiment 3

[0045] Referring to Figure 1-11 , the difference between this embodiment and Embodiment 2 is that a lifting drive box 2 is provided at the top end of the device housing 1. An elevating plate 203 is provided inside the lifting drive box 2. The elevating plate 203 is fixed to the drain pipe 304. A plurality of reciprocating lead screws 201 are provided around the suction pump 3. The reciprocating lead screws 201 penetrate through the elevating plate 203 through threaded holes. A first gear 202 is fixed to the top end of the reciprocating lead screw 201. A drive rotating shaft 204 is rotatably installed inside the lifting drive box 2. A second gear 205 is fixed to the bottom end of the drive rotating shaft 204. A plurality of first gears 202 are all meshed with the second gear 205. The top end of the drive rotating shaft 204 extends to the outside of the lifting drive box 2 and is fixed with a handwheel 206;

[0046] In order to drive the reciprocating lifting movement of the lifting piston 301, the handwheel 206 is used to drive the rotation of the drive rotating shaft 204. Thus, through the meshing of a plurality of first gears 202 with the second gear 205, a plurality of reciprocating lead screws 201 are driven to rotate synchronously. Furthermore, the elevating plate 203 is driven to reciprocate up and down, so that the reciprocating lifting movement of the lifting piston 301 can be driven, achieving the purpose of continuously sucking sewage. When the drain pipe 304 discharges sewage, it indicates that enough sewage has been collected in the sewage storage bottle 4.

[0047] Embodiment 4

[0048] Referring to Figure 1-11 , the difference between this embodiment and Embodiment 1 is that a plurality of positioning pins 102 are fixed to the bottom end of the device top cover 101. A plurality of positioning sleeves 103 are fixed to the side surface of the device housing 1. The plurality of positioning pins 102 penetrate through the plurality of positioning sleeves 103 one by one. A toothed ring 5 is rotatably installed on the inner wall of the bottom end of the device housing 1 at the storage position of the sewage storage bottle 4. A plurality of clamping members 501 are provided on the outer side of the toothed ring 5. The clamping members 501 are of arc-shaped elastic structure, and anti-slip protrusions 503 are provided on the clamping members 501. A third gear 502 is fixed to the installation rotating shaft of the clamping member 501. A plurality of third gears 502 are all meshed with the toothed ring 5;

[0049] The cooperation of the positioning pin 102 and the positioning sleeve 103 ensures that when the device top cover 101 covers the top end of the device housing 1, the plug 305 can just be inserted into the socket 401 of the sewage storage bottle 4. When the top cover 101 is removed, the sewage storage bottle 4 can be conveniently taken out. The sewage storage bottle 4 can be disassembled and assembled conveniently and quickly. When the toothed ring 5 rotates, a plurality of clamping members 501 can be driven to rotate synchronously through the meshing of the toothed ring 5 with the third gear 502, so as to achieve the purpose of centering and clamping, and the sewage storage bottle 4 can be accurately positioned, further ensuring the accurate positioning of the socket 401 of the sewage storage bottle 4 and the plug 305.

[0050] Wherein, a fourth gear 504 is rotatably installed at the center of the inner wall at the bottom end of the device housing 1. One of each group of third gears 502 meshes with the fourth gear 504. A driving column 505 is fixed to the top end of the fourth gear 504. A spiral guide groove 506 is formed on the outer side of the driving column 505. A horizontally arranged limiting rod 508 is fixed to the bottom end of the device top cover 101 through a connecting frame 507. One end of the limiting rod 508 extends into the spiral guide groove 506;

[0051] When the device housing 1 is covered, the limiting rod 508 enters the spiral guide groove 506 from the top end of the spiral guide groove 506. Then, during the downward movement, it will gradually drive the driving column 505 to rotate, thereby driving the fourth gear 504 to rotate, and further driving the third gear 502 to rotate, driving all the clamping members 501 to rotate synchronously. The sewage storage bottle 4 is automatically clamped and released in a linkage manner. When the device housing 1 is covered, the sewage storage bottle 4 is automatically clamped. When the device housing 1 is removed, the sewage storage bottle 4 is automatically released.

[0052] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] The control mode of the present invention is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of power also belongs to the common knowledge in the art. And the present invention is mainly used to protect mechanical devices. Therefore, the control mode and circuit connection of the present invention will not be explained in detail.

[0055] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A safety sampling device for chemical wastewater detection, comprising a device housing (1) and a device top cover (101), characterized in that: Inside the device housing (1), multiple sewage storage bottles (4) are placed. At the top of the sewage storage bottle (4), there is a socket (401). At the top of the device housing (1), there is a suction pump (3). The water inlet of the suction pump (3) is connected to a first suction pipe (303). At the end of the first suction pipe (303) far from the suction pump (3), there is a plug (305). On one side of the plug (305), there is a second suction pipe (306); Inside the sewage storage bottle (4), there is a horizontal partition (401). On the horizontal partition (401), there is a docking pipe (402). The docking pipe (402) corresponds to the first suction pipe (303). Around the docking pipe (402) on the horizontal partition (401), multiple water inlet holes (403) are opened. The water inlet holes (403) are communicated with the second suction pipe (306).

2. The safety sampling device for chemical wastewater detection according to claim 1, wherein: One end of the second suction pipe (306) extends to the outside of the device housing (1) and is connected to a hose. At the end of the hose far from the second suction pipe (306), there is a filter. The bottom end of the docking pipe (402) penetrates and extends below the horizontal partition (401) and is connected to a U-shaped bend pipe (404).

3. The safety sampling device for chemical wastewater detection according to claim 1, characterized in that: Inside the suction pump (3), there is a lifting piston (301). A first one-way valve is installed in the first suction pipe (303). At the top of the lifting piston (301), there is a drain pipe (304). The bottom end of the drain pipe (304) penetrates the lifting piston (301) and is fixed with a second one-way piston (302).

4. The safety sampling device for chemical wastewater detection according to claim 3, wherein: The first one-way valve ensures that sewage can only enter the suction pump (3) unidirectionally. The second one-way piston (302) ensures that sewage can only flow into the drain pipe (304) from bottom to top.

5. The safety sampling device for chemical wastewater detection according to claim 4, wherein: At the top of the device housing (1), there is a lifting drive box (2). Inside the lifting drive box (2), there is a lifting plate (203). The lifting plate (203) is fixed to the drain pipe (304).

6. The safety sampling device for chemical wastewater detection according to claim 5, characterized in that: Around the suction pump (3), there are multiple reciprocating lead screws (201). The reciprocating lead screws (201) pass through the lifting plate (203) through threaded holes. At the top of the reciprocating lead screw (201), there is a first gear (202).

7. The safety sampling device for chemical wastewater detection according to claim 5, characterized in that: Inside the lifting drive box (2), a drive rotating shaft (204) is rotatably installed. At the bottom end of the drive rotating shaft (204), there is a second gear (205). Multiple first gears (202) are all meshed with the second gear (205).

8. The safety sampling device for chemical wastewater detection according to claim 7, characterized in that: The top end of the drive rotating shaft (204) extends to the outside of the lifting drive box (2) and is fixed with a handwheel (206).

9. The safety sampling device for chemical wastewater detection according to claim 1, characterized in that: At the bottom end of the top cover (101) of the device, a plurality of positioning pins (102) are fixed. On the side of the device housing (1), a plurality of positioning sleeves (103) are fixed. The plurality of positioning pins (102) penetrate through the plurality of positioning sleeves (103) one by one. On the inner wall of the bottom end of the device housing (1) at the storage position of the sewage storage bottle (4), a toothed ring (5) is rotatably installed. On the outer side of the toothed ring (5), a plurality of clamping members (501) are provided. The clamping members (501) are of arc-shaped elastic structure, and anti-slip protrusions (503) are provided on the clamping members (501). On the mounting rotating shaft of the clamping member (501), a third gear (502) is fixed. The plurality of third gears (502) are all meshed with the toothed ring (5).

10. The safety sampling device for chemical wastewater detection according to claim 9, characterized in that: At the center position of the inner wall of the bottom end of the device housing (1), a fourth gear (504) is rotatably installed. One of each group of third gears (502) is meshed with the fourth gear (504). At the top end of the fourth gear (504), a driving column (505) is fixed. On the outer side of the driving column (505), a spiral guide groove (506) is provided. At the bottom end of the device top cover (101), a horizontally arranged limiting rod (508) is fixed through a connecting frame (507). One end of the limiting rod (508) extends into the spiral guide groove (506).

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