A device for stratified sampling of sewage lagoons

Abstract

The utility model relates to sampling equipment technical field especially sewage pool layered sampling device, it includes mounting bracket, open and close frame and containing bottle, first through the lifting open and close frame, let open and close frame close all water inlet portion, after the mounting bracket vertical drop to sewage pool, make each sampling pipe correspond to different water layer respectively, after through the lifting open and close frame, let open and close frame open all water inlet portion on sampling pipe, let sewage flow into sampling pipe through water inlet, and directly enter containing bottle with the sampling pipe independent communication, until complete sampling, after sampling, close all water inlet portion through open and close frame again, take out the device from the water surface, can obtain multiple independent layered water sample one time, the scheme can complete multilayer sampling one time, and each layer sample is independent, avoids sample cross, simultaneously dispenses with the step such as transfer, improves sampling efficiency, and each containing bottle can be separately washed, avoids residual sample influence subsequent use.

Description

Technical Field

[0001] This utility model relates to the field of sampling equipment technology, and in particular to a stratified sampling device for sewage tanks. Background Technology

[0002] In the field of wastewater treatment, it is necessary to sample and test wastewater during or after treatment. Existing technologies often employ multi-layer sampling equipment to sample water at different depths within the wastewater tank, thereby obtaining more comprehensive samples. For example, patent number CN201921698473.8 discloses a wastewater quality stratification sampling device for wastewater treatment plants, which uses an adjusting handle to drive a rotating baffle to rotate, causing the rotating baffle to move away from the corresponding inlet, allowing wastewater to enter the internal cavity of the main rod. However, the above patent has some shortcomings: on the one hand, wastewater samples from different depths are all collected in the same main rod, requiring subsequent repackaging into different containers for separate testing, making the operation cumbersome, time-consuming, and labor-intensive; on the other hand, the inside of the main rod is difficult to thoroughly clean during repeated use, and residual samples can easily affect the accuracy of subsequent sampling.

[0003] Based on this, the applicant considers designing a stratified sampling device for sewage tanks where each layer of samples is independent of the others. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to provide a stratified sampling device for sewage tanks where each layer of samples is independent.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A stratified sampling device for a wastewater tank includes a mounting frame, an opening and closing frame, and a container bottle. The mounting frame includes a plurality of sampling tubes fixedly arranged along its axial direction. One end of each sampling tube is provided with a water inlet, and the other end is provided with a water outlet detachably connected to the container bottle. The opening and closing frame is jacked up and down on the mounting frame, and the opening and closing frame opens or closes all the water inlets when it is raised or lowered.

[0006] The working principle and advantages of the wastewater tank stratified sampling device in this technical solution are as follows: In operation, first, use the lifting and closing frame to close all water inlets. Then, lower the mounting frame vertically into the wastewater tank, positioning each sampling tube to correspond to a different water layer. Next, use the lifting and closing frame to open all water inlets on the sampling tubes, allowing wastewater to flow into the sampling tubes through the inlets and directly into the container bottle independently connected to each sampling tube, until sampling is complete. After sampling, close all water inlets again using the lifting and closing frame and lift the device out of the water, thus obtaining multiple independent stratified water samples at once. The container bottle, detachably connected to the outlet, can be directly sent for testing without secondary repackaging. This solution can complete multi-layer sampling at once, with each layer of samples being independent, avoiding sample cross-contamination, and eliminating steps such as repackaging and transfer, thus improving sampling efficiency. Furthermore, each container bottle can be individually disassembled and washed to prevent residual samples from affecting subsequent use.

[0007] Furthermore, the mounting frame includes a mounting plate, the sampling tube is fixedly connected to the mounting plate, the water inlet and the water outlet are located on both sides of the mounting plate respectively; a sealing cap is detachably connected to the mounting plate, and when the sealing cap is connected to the mounting plate, an isolation cavity is formed, and the container bottle is located in the isolation cavity.

[0008] Furthermore, the mounting plate has an axially formed sealing groove on its side wall, and the inner side wall of the sealing cover has a protruding sealing strip corresponding to the sealing groove.

[0009] Furthermore, a snap-fit ​​knob is rotatably provided on the top side of the sealing cover, and the snap-fit ​​knob can be rotated to abut against the top side of the mounting plate.

[0010] Furthermore, the sealing cover has a transparent window on its side wall.

[0011] Furthermore, the water outlet includes a water outlet head disposed on the sampling tube, and the water outlet head is threadedly connected to the mouth of the receiving bottle.

[0012] Furthermore, the opening and closing frame includes a lifting rod that is lifted and installed on the mounting frame, and the lifting rod is axially fixedly connected to a plurality of opening and closing plugs, and the water inlet includes a water inlet corresponding to the opening and closing plug.

[0013] Furthermore, the lifting rod is U-shaped, and the opening and closing plugs are all fixedly connected to the lifting rod.

[0014] Furthermore, two opposing guide blocks are fixedly connected to the circumferential sidewall of the sampling tube, and the guide blocks are provided with guide holes for the lifting rod to pass through.

[0015] Furthermore, a magnetic suction component is fixedly connected to the mounting bracket, and a magnetic suction cavity is provided inside the magnetic suction component. A magnetic suction plate is fixedly connected to the opening and closing frame, and the magnetic suction plate is magnetically connected to the bottom side and the top side of the magnetic suction cavity. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the wastewater tank stratified sampling device according to an embodiment of the present invention. Figure 1 ; Figure 2 This is a three-dimensional structural diagram of the wastewater tank stratified sampling device according to an embodiment of the present invention. Figure 2 (Except for the sealing cap); Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a three-dimensional structural diagram of the sealing cap according to an embodiment of the present utility model; Figure 5 This is a three-dimensional structural diagram of the mounting bracket and bottle container according to an embodiment of the present utility model; Figure 6 This is a three-dimensional structural diagram of the opening and closing frame according to an embodiment of the present utility model; Figure 7 This is a cross-sectional structural diagram of the wastewater tank stratified sampling device according to an embodiment of the present invention; Figure 8 for Figure 7 Enlarged view of point B in the middle; Figure 9 This is a bottom view of another embodiment of the wastewater tank stratified sampling device of this utility model; In the above attached figures: 100. Mounting bracket; 101. Mounting plate; 110. Sampling tube; 111. Inlet; 112. Outlet; 113. Guide block; 120. Sealing groove; 130. Magnetic component; 131. Magnetic cavity; 140. Handle; 200. Opening and closing frame; 210. Lifting rod; 220. Opening and closing plug; 230. Magnetic suction plate; 300. Container bottle; 400. Sealing cover; 410. Transparent window; 420. Sealing strip; 430. Snap-fit ​​knob; 440. Support plate; 450. Isolation chamber; 510. Connecting ring; 520. Floating block; 530. Counterweight. Detailed Implementation

[0017] In the description of this utility model, it should be understood that 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., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] Refer to together Figures 1 to 8 This embodiment provides a stratified sampling device for a wastewater tank, which includes a mounting frame 100, an opening and closing frame 200, and a container bottle 300. The mounting frame 100 includes a plurality of sampling tubes 110 fixedly arranged along its axial direction. One end of the sampling tube 110 is provided with a water inlet, and the other end is provided with a water outlet that is detachably connected to the container bottle 300. The opening and closing frame 200 is flexibly mounted on the mounting frame 100. When the opening and closing frame 200 is flexibly raised or lowered, all the water inlets are opened or closed.

[0019] In this embodiment, during use, the opening and closing frame 200 is first used to close all the water inlets; then the mounting frame 100 is vertically lowered into the sewage tank so that each sampling tube 110 corresponds to a different water layer; then the opening and closing frame 200 is used to open all the water inlets on the sampling tube 110, allowing sewage to flow into the sampling tube 110 through the inlet 111 and directly into the container bottle 300 that is independently connected to the sampling tube 110, until sampling is completed; After sampling is completed, all water inlets are closed again using the opening and closing frame 200, and the device is lifted out of the water surface, thus obtaining multiple independent stratified water samples at once. After removing the container bottle 300, which is detachably connected to the water outlet, it can be directly sent for testing without secondary repackaging. This solution can complete multi-layer sampling at one time, and each layer of samples is independent of each other, avoiding sample cross-contamination. It also eliminates steps such as repackaging and transfer, improving sampling efficiency. Furthermore, each container bottle 300 can be disassembled and washed individually to avoid residual samples affecting subsequent use.

[0020] Preferably, such as Figures 1 to 8As shown, the mounting frame 100 includes a mounting plate 101, a sampling tube 110 fixedly connected to the mounting plate 101, and an inlet and outlet located on opposite sides of the mounting plate 101. A sealing cap 400 is detachably connected to the mounting plate 101. When the sealing cap 400 is connected to the mounting plate 101, it forms an isolation cavity 450, and a container bottle 300 is located within the isolation cavity 450. After the sealing cap 400 is connected to the mounting plate 101, it forms a closed isolation cavity 450, allowing the container bottle 300 within the isolation cavity 450 to be isolated from external sewage. When the mounting frame 100 is placed in the sewage tank, the mounting plate 101... 1. The two sides form an inlet side (sewage tank environment) and an outlet side (container bottle 300 area). The outer surface of the container bottle 300 located in the isolation chamber 450 is always inside the isolation chamber 450 to avoid being contaminated by sewage. After sampling, the entire container bottle 300 can be exposed by simply removing the sealing cap 400. There is no sewage residue on the outer wall of the container bottle 300. It can be removed from the sampling tube 110 and sent for testing without wiping or rinsing, which greatly reduces the amount of cleaning work. The isolation chamber 450 provides mechanical protection for the container bottle 300 to prevent it from being damaged by collision with the tank wall or obstacles during the lowering or recycling process.

[0021] Preferably, such as Figures 1 to 5 As shown, a sealing groove 120 is axially formed on the side wall of the mounting plate 101, and a sealing strip 420 corresponding to the sealing groove 120 is protruding from the inner side wall of the sealing cover 400. A continuous sealing groove 120 is machined axially on the outer peripheral side wall of the mounting plate 101, and a corresponding protruding sealing strip 420 is provided on the inner side wall of the sealing cover 400. When the sealing cover 400 is fastened on the mounting plate 101, the sealing strip 420 is pressed into the sealing groove 120 to form a sealing interface. The sealing interface can prevent external sewage from entering the isolation chamber 450. Specifically, an elastic sealing layer, such as a rubber gasket, can be provided between the sealing strip 420 and the sealing groove 120 to improve the sealing effect. A sealing groove 120 is also provided on the bottom side of the mounting plate 101 to form a continuous U-shaped sealing groove 120.

[0022] Preferably, such as Figure 1 and Figure 4 As shown, a snap-fit ​​knob 430 is rotatably provided on the top side of the sealing cover 400. The snap-fit ​​knob 430 can be rotated to abut against the top side of the mounting plate 101. When the sealing cover 400 is engaged, rotating the knob causes its bottom side to mechanically abut against the top side of the mounting plate 101, generating a clamping force that forces the sealing strip 420 to be further compressed and firmly embedded in the sealing groove 120, thereby locking the sealing cover 400 onto the mounting plate 101. Reverse rotation will quickly unlock it.

[0023] Preferably, such as Figure 1 and Figure 4As shown, a transparent window 410 is provided on the side wall of the sealing cap 400; the transparent window 410 faces the area of ​​the container bottle 300 in the isolation chamber 450, and the operator can directly observe the liquid level of each container bottle 300 (the container bottle 300 is made of transparent material) from the outside without opening the sealing cap 400, so as to determine whether the sampling is completed or whether a secondary operation is required; specifically, the side wall of the sealing cap 400 is fitted with tempered glass or high-transparency PC board and other transparent materials to form the transparent window 410, and the transparent window 410 is sealed to the sealing cap 400 body by a sealing ring or sealant.

[0024] More specifically, such as Figure 1 and Figure 4 As shown, at least two support plates 440 are fixedly connected to the bottom of the sealing cover 400. When disassembling or assembling the sealing cover 400, the operator can step on the support plate 440 or embed the support plate 440 into the fixed component to facilitate the disassembly or assembly of the sealing cover 400.

[0025] Preferably, such as Figure 2 , Figure 3 , Figure 5 , Figure 7 and Figure 8 As shown, the water outlet includes a water outlet head 112 mounted on the sampling tube 110, which is threadedly connected to the mouth of the container bottle 300. The water outlet head 112 with external (or internal) threads is integrally mounted on the water outlet end of the sampling tube 110, and the mouth of the container bottle 300 is correspondingly provided with matching internal (or external) threads. Before sampling, the container bottle 300 and the water outlet head 112 are screwed together to complete a reliable connection. After sampling, the bottle can be removed by unscrewing it in the reverse direction without the need for additional tools. This connection method has advantages such as reliable connection, good sealing, convenient assembly and disassembly, and strong versatility.

[0026] Preferably, such as Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, the opening and closing frame 200 includes a lifting rod 210 that is lifted and mounted on the mounting frame 100. Multiple opening and closing plugs 220 are axially fixedly connected to the lifting rod 210. The water inlet includes an inlet 111 corresponding to each opening and closing plug 220. The opening and closing frame 200 includes the lifting rod 210 and multiple axially spaced opening and closing plugs 220. The lifting rod 210 can reciprocate vertically along the mounting frame 100. Each opening and closing plug 220 is rigidly connected to the lifting rod 210 and corresponds to the inlet 111 of the corresponding sampling tube 110. When the lifting rod 210 is... When the lever is lifted or pressed down, all the opening and closing plugs 220 move synchronously, realizing the unified opening or closing of all water inlets 111. Specifically, the water inlets 111 are located at the top of the sampling tube 110. When the lifting rod 210 descends, the opening and closing plugs 220 close the water inlets 111, and when the lifting rod 210 rises, the opening and closing plugs 220 open the water inlets 111. The end of the opening and closing plug 220 that extends into the water inlet 111 is made of an elastic material, such as a rubber plug. More specifically, the opening and closing plugs 220 and the lifting rod 210 are detachably connected and can be replaced individually for easy maintenance.

[0027] Preferably, such as Figure 6 As shown, the lifting rod 210 is U-shaped, and the opening and closing plugs 220 are all fixedly connected to the lifting rod 210. The lifting rod 210 is bent into a U-shape, with two branches spanning both sides of the sampling tube 110. The two ends of all the opening and closing plugs 220 are rigidly fixed to the two arms of the U-shaped rod, forming a "bridge" frame. The U-shaped structure provides double-sided guidance during the lifting process, so that each opening and closing plug 220 is subjected to balanced force and moves synchronously, preventing skewness or jamming.

[0028] Preferably, such as Figure 1 and Figure 4 As shown, two opposing guide blocks 113 are fixedly connected to the circumferential side wall of the sampling tube 110. The guide blocks 113 have guide holes for the lifting rod 210 to pass through. The two arms of the U-shaped lifting rod 210 pass through the corresponding guide holes. When lifting, the guide holes limit and guide the lifting rod 210, so that it only moves in the vertical direction, preventing swinging or rotation, thereby ensuring that all opening and closing plugs 220 are always aligned with their respective inlets 111, achieving high-precision opening and closing. Specifically, the guide blocks 113 are welded to the sampling tube 110 or integrally formed with the sampling tube 110.

[0029] Preferably, such as Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, a magnetic suction component 130 is fixedly connected to the mounting bracket 100, and a magnetic suction cavity 131 is provided inside the magnetic suction component 130. A magnetic suction plate 230 is fixedly connected to the opening and closing frame 200, and the magnetic suction plate 230 is magnetically connected to the bottom and top sides of the magnetic suction cavity 131. The magnetic suction plate 230 is placed inside the magnetic suction cavity 131 and can move up and down with the lifting rod 210. Magnets are fixedly connected to the top and bottom sides of the magnetic suction cavity 131. When the magnetic suction plate 230 rises with the lifting rod 210 to magnetically attract the top side of the magnetic suction cavity 131, it is magnetically attracted to the magnetic suction plate 230. The magnetic suction lock is located on the top side of the suction cavity 131, at which time all the opening and closing plugs 220 are in the open state; when the magnetic suction plate 230 descends with the lifting rod 210 to magnetically suction the bottom side of the magnetic suction cavity 131, it is magnetically locked to the bottom side of the magnetic suction cavity 131, at which time all the opening and closing plugs 220 are in the closed state; the magnetic suction allows the lifting rod 210 to be automatically positioned when there is no external force, preventing the opening and closing frame 200 from being accidentally displaced due to gravity, water flow impact or other factors; specifically, the above-mentioned magnetic suction frame is a U-shaped frame and can be detachably connected to the mounting frame 100.

[0030] Specifically, such as Figure 1 As shown, the mounting bracket 100 is equipped with a retractable handle 140 for easy operation.

[0031] Specifically, such as Figure 9 As shown, the mounting frame 100 is also fixedly connected to a floating component, which includes a connecting plate fixedly connected to the mounting plate 101. A floating block 520 is fixedly connected to the connecting ring 510. The floating block 520 allows the entire sewage tank stratified sampling device to float on the surface of the sewage tank, improving its practicality. More specifically, a counterweight 530 can also be detachably connected to the connecting ring 510, which can adjust the center of gravity of the entire device. More specifically, the opening and closing frame 200 can be automatically raised and lowered using existing driving equipment, such as installing an electric telescopic rod on the mounting frame 100 and fixing its telescopic end to the opening and closing frame 200 to achieve automatic raising and lowering of the opening and closing frame 200.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A stratified sampling device for sewage tanks, characterized in that, The device includes a mounting frame, an opening and closing frame, and a container bottle. The mounting frame includes multiple sampling tubes fixedly arranged along its axial direction. Each sampling tube has a water inlet at one end and a water outlet at the other end that is detachably connected to the container bottle. The opening and closing frame is jacked up and down on the mounting frame. When the opening and closing frame is jacked up and down, all the water inlets are opened or closed. The mounting frame includes a mounting plate, the sampling tube is fixedly connected to the mounting plate, the water inlet and the water outlet are located on opposite sides of the mounting plate; a sealing cap is detachably connected to the mounting plate, and when the sealing cap is connected to the mounting plate, an isolation cavity is formed, and the container bottle is located inside the isolation cavity; The opening and closing frame includes a lifting rod that is lifted and mounted on the mounting frame. The lifting rod is axially fixedly connected to a plurality of opening and closing plugs. The water inlet includes a water inlet corresponding to the opening and closing plug. A magnetic suction component is fixedly connected to the mounting bracket, and a magnetic suction cavity is provided inside the magnetic suction component. A magnetic suction plate is fixedly connected to the opening and closing frame, and the magnetic suction plate is magnetically connected to the bottom and top sides of the magnetic suction cavity.

2. The wastewater tank stratified sampling device as described in claim 1, characterized in that, The mounting plate has an axially formed sealing groove on its side wall, and the inner side wall of the sealing cover has a protruding sealing strip corresponding to the sealing groove.

3. The wastewater tank stratified sampling device as described in claim 2, characterized in that, The top side of the sealing cover is rotatably provided with a snap-fit ​​knob, which can be rotated to contact the top side of the mounting plate.

4. The wastewater tank stratified sampling device as described in claim 1, characterized in that, The sealing cover has a transparent window on its side wall.

5. The wastewater tank stratified sampling device as described in claim 1, characterized in that, The water outlet section includes a water outlet head disposed on the sampling tube, and the water outlet head is threadedly connected to the mouth of the receiving bottle.

6. The wastewater tank stratified sampling device as described in claim 1, characterized in that, The lifting rod is U-shaped, and the opening and closing plugs are fixedly connected to the lifting rod.

7. The wastewater tank stratified sampling device as described in claim 6, characterized in that, Two opposing guide blocks are fixedly connected to the circumferential sidewall of the sampling tube, and the guide blocks are provided with guide holes for the lifting rod to pass through.

8. The wastewater tank stratified sampling device as described in claim 1, characterized in that, The mounting bracket is also fixedly connected to a floating component, which includes a connecting ring fixedly connected to the mounting plate, and a floating block fixedly connected to the connecting ring.

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