CN114964902A

CN114964902A - Sampling device for life drinking water detection

Info

Publication number: CN114964902A
Application number: CN202210621876.2A
Authority: CN
Inventors: 安乾; 于振花; 弋英; 于红卫
Original assignee: Qingdao Center Of Disease Control And Prevention (qingdao Prevention Medicine Research Institute)
Current assignee: Qingdao Center Of Disease Control And Prevention (qingdao Prevention Medicine Research Institute)
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-08-30

Abstract

The invention relates to the technical field of water detection and sampling, in particular to a sampling device for detecting drinking water for life. The telescopic frame adopted by the sampling device for detecting the drinking water in the invention rotatably accommodates the sampling cylinder, so that the sampling cylinder is convenient to store in the moving and transporting process, the sampling cylinder is prevented from being broken due to collision in the moving and transporting process, and meanwhile, when the sampling cylinder moves towards the drinking water, the distance between the upper sampling cylinder and the lower sampling cylinder is adjusted through the adjusting mechanism, so that the sampling detection of the drinking water at different depth levels is realized, the sampling at different depth levels of the drinking water is facilitated, the labor intensity of operators is reduced, and the problem that the sampling sample similarity is too high and the layered sampling effect is difficult to achieve due to the fact that the distance between the two sampling cylinders is short is also avoided.

Description

Sampling device for life drinking water detection

Technical Field

The invention relates to the technical field of water detection and sampling, in particular to a sampling device for detecting drinking water for life.

Background

The sampling device for detecting the domestic drinking water aims to guarantee the sanitary quality of the drinking water and the health of the drinking water, so that the physical health of people is guaranteed, and the problem that the life safety of people cannot be guaranteed due to water-mediated infectious diseases or unqualified sanitary quality of the water is solved.

Sampling device who adopts when carrying out sampling test to domestic drinking water at present need carry out a lot of samplings when taking a sample the drinking water on different degree of depth layers to obtain the drinking water of different degree of depth levels, but such domestic drinking water detects the sample and has following problem: 1. the sample has increased the sample degree of difficulty for the sample of life drinking water many times, need carry out the record many times with the sample depth, has increased staff's work load.

2. When the sampling container moves before sampling and after sampling, the sampling container is suspended, so that the sampling container collides with other objects in the moving process, and the problem that the sampling container is broken and cannot be used is caused.

Disclosure of Invention

In order to solve the problems, the invention adopts the following technical scheme that the sampling device for detecting the domestic drinking water comprises a containing seat and a step storage groove formed in the lower end face of the containing seat, one end of the step storage groove is rotatably connected with an expansion bracket through a rotating shaft, the step storage groove is used for containing the expansion bracket, one side, far away from the step storage groove, of the expansion bracket is provided with a sampling cylinder through an adjusting mechanism, and the expansion bracket drives the sampling cylinder to move towards the sampling direction.

The adjusting mechanism comprises a fixing frame, the fixing frame is fixedly connected with the middle part of one side of the telescopic frame, which is far away from the ladder storage groove, the fixing frame is formed by fixedly connecting two fixing plates, the opposite surfaces of the two fixing plates are respectively provided with a sliding groove, an adjusting shaft is slidably connected between the two sliding grooves, one side of the telescopic frame, which is far away from the ladder storage groove, is provided with adjusting sliding grooves which are vertically arranged, the two adjusting sliding grooves are slidably connected with Z-shaped frames which are vertically symmetrically arranged, the opposite surfaces of the two Z-shaped frames are respectively rotatably connected with a fixed shaft, the two sampling cylinders are respectively sleeved on the upper fixed shaft and the lower fixed shaft and are vertically arranged, the two sampling cylinders are respectively positioned at two sides of the fixing frame, the end surfaces of the sampling cylinders, which are close to the fixing frame, are respectively provided with an annular groove, the annular groove is rotatably connected with a connecting seat, the connecting seat is hinged with an adjusting rod, one end of the adjusting rod, which is far away from the connecting seat, is rotatably connected with the adjusting shaft, the lateral wall of sampler barrel is close to upper end department and sets up the thief hole of symmetrical arrangement, installs the ARC filter screen on the thief hole, installs the mounting panel of symmetrical arrangement in the sampler barrel, and sliding connection has the jam head that blocks up the thief hole on the mounting panel, is connected through extrusion spring between jam head and the mounting panel lateral wall, installs the pulling subassembly that drives the jam head and remove in the sampler barrel.

The pulling assembly comprises two rotating grooves formed at opposite ends of the fixed shaft, a winding groove communicated with the rotating grooves is formed in the fixed shaft, the rotating grooves penetrate through the fixed shaft, a winding shaft is rotatably connected to the Z-shaped frame, two supporting plates which are symmetrically arranged are jointly installed on the two fixing plates, a connecting rod is rotatably connected between the two supporting plates and penetrates into the rotating grooves, two ends of the connecting rod are respectively provided with an extending groove, limit grooves which are symmetrically arranged are formed in the extending grooves, the winding shaft penetrates into the extending grooves after penetrating through the rotating grooves, limiting blocks which are slidably connected with the limit grooves are installed on the side walls of the winding shaft, a pulling rope is installed at one end, away from the plugging hole, of the plugging head, the pulling rope penetrates through the sampling cylinder and is connected with the winding groove, a sealing ring for moving and sealing the pulling rope is installed in the sampling cylinder, and a rotating shaft is rotatably connected between the two fixing plates, the rotating shaft is in transmission connection with the connecting rod through a worm gear.

As a preferred technical scheme of the invention, the side wall of the rotating groove is provided with symmetrically arranged fan-shaped grooves, the connecting rod is provided with symmetrically arranged pushing blocks, and the pushing blocks are positioned in the fan-shaped grooves.

As a preferred technical scheme of the invention, the sampling hole is provided with a hole expanding groove, and the end surface of the Z-shaped frame close to the sampling cylinder is provided with a cleaning brush corresponding to the sampling hole.

As a preferred technical scheme of the invention, one end of the blocking head close to the sampling hole is of an arc-shaped structure, the arc-shaped end of the blocking head is provided with anti-blocking rods which are uniformly distributed, and the anti-blocking rods correspond to meshes on the arc-shaped filter screen one by one.

As a preferred technical scheme of the invention, the end face of the Z-shaped frame close to the sampling cylinder is provided with a support column through a support rod, the support column is rotatably connected with the annular groove, the support column is provided with an annular seat rotatably sleeved on the fixed shaft, and the annular seat is fixedly connected with the connecting seat.

As a preferred technical scheme of the invention, the telescopic frame comprises a rotating plate fixedly connected to a rotating shaft, a lower chute is arranged on the end surface of the rotating plate far away from the stepped storage groove, an extension plate is connected to the lower chute in a sliding manner, a fixing frame is fixedly connected with the extension plate, an adjusting chute is arranged on the side wall of the extension plate far away from the rotating plate, a guide groove is arranged on the end surface of the extension plate close to the rotating plate, a guide plate in sliding connection with the guide groove is arranged at the lower end of the rotating plate, a guide wheel is rotatably connected to the guide plate through an ear plate, symmetrically arranged ear seats are arranged on the end surface of the storage seat far away from the stepped storage groove, a driving shaft is rotatably connected between the two ear seats, two winding ropes with opposite winding directions are connected to the driving shaft, a limiting seat for limiting the winding ropes is sleeved on the driving shaft, one winding rope penetrates through the storage plate, the extension plate and the guide plate and then is connected with the lower end of the guide groove, the other winding rope penetrates through the storage plate and the extension plate and then bypasses the guide wheel to be connected with the upper end of the guide groove.

As a preferred technical scheme of the invention, the lower end of the lower chute is provided with drain holes which are uniformly distributed.

As a preferable technical scheme of the invention, the sampling cylinder is of a conical hollow column structure with the diameter gradually decreasing downwards.

The invention has the beneficial effects that: 1. the telescopic frame adopted by the sampling device for detecting the drinking water in the invention rotatably accommodates the sampling cylinder, so that the sampling cylinder is convenient to store in the moving and transporting process, the sampling cylinder is prevented from being broken due to collision in the moving and transporting process, and meanwhile, when the sampling cylinder moves to the drinking water, the distance between the upper sampling cylinder and the lower sampling cylinder is adjusted through the adjusting mechanism, so that the sampling detection of the drinking water at different depth levels is realized, the sampling at different depth levels of the drinking water is facilitated, the labor intensity of operators is reduced, and meanwhile, the problem that the sampling sample similarity is too high and the layered sampling effect is difficult to achieve due to the fact that the distance between the two sampling cylinders is short is avoided;

2. when the connecting rod rotates, the fixed shaft drives the sampling cylinder to rotate along with the connecting rod, and the cleaning brush cleans impurities on the arc-shaped filter screen in the rotating process of the sampling cylinder, so that the problem that water is difficult to enter the sampling cylinder to quickly fill the sampling cylinder due to the accumulation of the impurities on the arc-shaped filter screen is solved;

3. according to the invention, after the distance between the two sampling cylinders is adjusted, the plugging head is driven to move by the pulling assembly so as to open the sampling holes, so that the drinking water enters the sampling cylinders, and meanwhile, the arc-shaped filter screen filters large-particle impurities in the water, so that the sampling cylinders are prevented from being plugged by the impurities in the water and difficult to take out.

Drawings

The invention is further explained below with reference to the figures and examples;

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention;

FIG. 4 is an enlarged view of FIG. 3 at E of the present invention;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 2 in accordance with the present invention;

FIG. 6 is an enlarged view of the invention at C of FIG. 5;

FIG. 7 is an enlarged view of the invention at D of FIG. 5;

FIG. 8 is a top sectional view of the rotating groove, the winding shaft, the connecting rod, the limiting block, the fan-shaped groove and the pushing block of the invention.

In the figure: 1. a storage seat; 2. a stepped storage groove; 20. a rotating shaft; 3. a telescopic frame; 30. a rotating plate; 31. a lower chute; 310. a drain hole; 32. an extension plate; 33. a guide plate; 34. a guide wheel; 35. an ear mount; 36. driving a shaft; 37. a limiting seat; 4. an adjustment mechanism; 40. a fixed mount; 41. a sliding groove; 42. an adjustment shaft; 43. a Z-shaped frame; 44. a fixed shaft; 45. an annular groove; 46. a connecting seat; 47. adjusting a rod; 48. a sampling hole; 49. an arc-shaped filter screen; 401. a plugging head; 402. a compression spring; 410. a rotating groove; 411. a coiling groove; 412. a winding shaft; 413. a support plate; 414. a connecting rod; 415. a limiting block; 416. pulling the rope; 417. a seal ring; 418. a rotating shaft; 420. a sector groove; 421. pushing the block; 430. a hole expanding groove; 431. cleaning the brush; 440. an anti-blocking rod; 450. a support bar; 451. a support column; 452. an annular seat; 5. and a sampling tube.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

Referring to fig. 1, fig. 2 and fig. 3, a life drinking water detects uses sampling device, deposit including the ladder that storage 1 and storage 1 terminal surface were seted up and accomodate groove 2, the ladder is deposited the one end of accomodating groove 2 and is rotated through rotation axis 20 and is connected with expansion bracket 3, and the ladder is deposited groove 2 and is used for accomodating expansion bracket 3, and expansion bracket 3 keeps away from the ladder and deposits one side of accomodating groove 2 and install sampler barrel 5 through adjustment mechanism 4, and expansion bracket 3 drives sampler barrel 5 and removes to the sample direction.

Referring to fig. 1, the sampling cylinder 5 has a tapered hollow column structure with a diameter gradually decreasing downward, so that resistance of the sampling cylinder 5 when entering water is reduced, and the sampling cylinder 5 moves downward into water.

Referring to fig. 1, 3 and 5, the adjusting mechanism 4 includes a fixing frame 40, the fixing frame 40 is fixedly connected to a middle portion of a side of the telescopic frame 3 away from the step storage groove 2, the fixing frame 40 is formed by fixedly connecting two fixing plates, sliding grooves 41 are respectively formed on opposite surfaces of the two fixing plates, an adjusting shaft 42 is slidably connected between the two sliding grooves 41, adjusting sliding grooves are vertically formed on a side of the telescopic frame 3 away from the step storage groove 2, Z-shaped frames 43 which are vertically and symmetrically arranged are slidably connected in the two adjusting sliding grooves, fixed shafts 44 are rotatably connected to opposite surfaces of the two Z-shaped frames 43, the two sampling cylinders 5 are respectively sleeved on the upper and lower fixed shafts 44, the sampling cylinders 5 are vertically arranged, the two sampling cylinders 5 are respectively located on two sides of the fixing frame 40, an annular groove 45 is formed on an end surface of the sampling cylinder 5 close to the fixing frame 40, and a connecting seat 46 is rotatably connected to the annular groove 45, articulated regulation pole 47 on connecting seat 46, the one end that connecting seat 46 was kept away from to regulation pole 47 is rotated with regulating spindle 42 and is connected, the lateral wall of sampler barrel 5 is close to upper end department and sets up symmetrical arrangement's thief hole 48, install ARC filter net 49 on the thief hole 48, install symmetrical arrangement's mounting panel in the sampler barrel 5, sliding connection has the jam head 401 that blocks up thief hole 48 on the mounting panel, be connected through extrusion spring 402 between jam head 401 and the mounting panel lateral wall, install the pulling subassembly that drives jam head 401 and remove in the sampler barrel 5.

When the distance between two sampling barrels 5 is adjusted, the adjusting shaft 42 is driven to move by the external electric slider connected with the adjusting shaft 42, the adjusting shaft 42 pushes the two sampling barrels 5 to move towards two sides by the upper adjusting rod and the lower adjusting rod 47 in the moving process, the Z-shaped frame 43 is driven to move along the sliding groove 41 in the moving process of the sampling barrels 5, the effect of adjusting the distance between the two sampling barrels 5 is achieved, after the distance between the sampling barrels 5 is adjusted, the plugging head 401 is driven to move by the pulling assembly, so that the sampling hole 48 is opened, domestic drinking water enters the sampling barrels 5, meanwhile, the arc-shaped filter screen 49 filters large-particle impurities in water, and the sampling barrels 5 are prevented from being plugged by the impurities in the water and are difficult to take out.

Referring to fig. 1, a support post 451 is installed on the end surface of the Z-shaped frame 43 close to the sampling cylinder 5 through a support rod 450, the support post 451 is rotatably connected to the annular groove, an annular seat 452 rotatably sleeved on the fixed shaft 44 is installed on the support post 451, the annular seat 452 is fixedly connected to the connecting seat 46, and the support post 451, the support rod 450 and the annular seat 452 are all used for supporting the sampling cylinder 5.

Referring to fig. 1, 2, 3, 5 and 8, the telescopic frame 3 includes a rotating plate 30 fixedly connected to the rotating shaft 20, a lower chute 31 is formed on an end surface of the rotating plate 30 away from the step storage slot 2, an extension plate 32 is slidably connected to the lower chute 31, a fixing frame 40 is fixedly connected to the extension plate 32, an adjusting chute is formed on a side wall of the extension plate 32 away from the rotating plate 30, a guide slot is formed on an end surface of the extension plate 32 close to the rotating plate 30, a guide plate 33 slidably connected to the guide slot is mounted at a lower end of the rotating plate 30, the guide plate 33 is rotatably connected to a guide wheel 34 through an ear plate, symmetrically arranged ear seats 35 are mounted on an end surface of the storage seat 1 away from the step storage slot 2, a driving shaft 36 is rotatably connected between the two ear seats 35, two winding ropes 38 with opposite winding directions are connected to the driving shaft 36, a limiting seat 37 for limiting the winding ropes 38 is sleeved on the driving shaft 36, one of the winding ropes 38 penetrates through the storage plate, the extension plate 32 and the guide plate 33 and then is connected with the lower end of the guide groove, and the other winding rope 38 penetrates through the storage plate and the extension plate 32 and then is connected with the upper end of the guide groove by bypassing the guide wheel 34.

After the rotating plate 30 and the step storage groove 2 are vertically arranged at 90 degrees, the rotating plate 30 is connected with the driving shaft 36 through an external driving device such as a motor, the driving shaft 36 is rotated to wind the winding rope 38 wound on the guide wheel 34 in the rotating process, the winding rope 38 pulls the extension plate 32 to move downwards in the winding process, and meanwhile, the other winding rope 38 starts to be loosened, so that the extension plate 32 drives the material taking barrel to move into water for sampling, after the sampling is completed, the driving shaft 36 is rotated reversely, so that the winding rope 38 wound on the guide wheel 34 is loosened, the other winding rope 38 drives the extension plate 32 to move, and then the rotating plate 30 and the extension plate 32 are both collected into the step storage groove 2 through the rotation of the rotating shaft 20 so as to move after the sampling.

Referring to fig. 5, the lower end of the lower chute 31 is provided with drain holes 310 uniformly distributed, and the drain holes 310 drain water in the lower chute 31 and the guide groove, so as to avoid the problem of water stain accumulation.

Referring to fig. 1, 3, 5, 7 and 8, the pulling assembly includes two rotating slots 410 formed at opposite ends of the fixed shaft 44, a winding slot 411 formed on the fixed shaft 44 and communicated with the rotating slots 410, the rotating slots 410 passing through the fixed shaft 44, a winding shaft 412 rotatably connected to the Z-shaped frame 43, two support plates 413 symmetrically arranged and mounted on the two fixing plates, a connecting rod 414 rotatably connected between the two support plates 413, the connecting rod 414 penetrating into the rotating slots 410, extending slots formed at both ends of the connecting rod 414, limiting slots symmetrically arranged and formed in the extending slots, the winding shaft 412 penetrating into the extending slots after penetrating through the rotating slots 410, a limiting block 415 slidably connected with the limiting slots mounted on a side wall of the winding shaft 412, a pulling rope 416 mounted at one end of the plugging head 401 far from the plugging hole, the pulling rope 416 penetrating through the sampling barrel 5 and the winding slot 411 and then connected with the winding slot 411, a sealing ring 417 which movably seals the pulling rope 416 is installed in the sampling cylinder 5, a rotating shaft 418 is rotatably connected between the two fixing plates, and the rotating shaft 418 is in transmission connection with the connecting rod 414 through a worm gear.

One end of the rotating shaft 418 penetrates through the fixing plate and then is connected with the existing rotating equipment, such as a rotating motor driving the rotating shaft 418 to rotate, the rotating shaft 418 drives the connecting rod 414 to rotate through the matching of a worm gear and a worm, the connecting rod 414 drives the winding shaft 412 to rotate through the matching of the limiting groove and the limiting block 415 in the rotating process, the winding shaft 412 drives the plugging head 401 to move through the pulling rope 416 in the rotating process, so that the sampling hole 48 is opened, then water enters the sampling cylinder 5 through the sampling hole 48, and the sealing ring 417 is used for sealing the pulling rope 416 and the sampling cylinder 5 in the moving process of the pulling rope 416.

Referring to fig. 8, the side wall of the rotating slot 410 is provided with symmetrically arranged fan-shaped slots 420, the connecting rod 414 is provided with symmetrically arranged pushing blocks 421, and the pushing blocks 421 are located in the fan-shaped slots 420.

Referring to fig. 6, the sampling hole 48 is provided with an enlarged hole groove 430, and the end surface of the Z-shaped frame 43 near the sampling tube 5 is provided with a cleaning brush 431 corresponding to the sampling hole 48.

When the winding shaft 412 drives the plugging head 401 to move to open the plugging hole through the pulling rope 416, the pushing block 421 on the connecting rod 414 is tightly abutted to one side of the fan-shaped groove 420, then when the connecting rod 414 continues to rotate, the fixing shaft 44 drives the sampling cylinder 5 to rotate therewith, the sampling cylinder 5 cleans impurities on the arc-shaped filter screen 49 through the cleaning brush 431 in the rotating process, and therefore the problem that water is difficult to enter the sampling cylinder 5 to fill the sampling cylinder 5 quickly due to accumulation of the impurities on the arc-shaped filter screen 49 is avoided.

Referring to fig. 6, one end of the plugging head 401 close to the sampling hole 48 is of an arc-shaped structure, and the arc-shaped end of the plugging head 401 is provided with anti-blocking rods 440 which are uniformly arranged, wherein the anti-blocking rods 440 correspond to meshes on the arc-shaped filter screen 49 one by one.

After sampling of sampling tube 5 was accomplished, connecting rod 414 drove winding shaft 412 antiport to make pulling rope 416 loosen, stifled head 401 resets under extrusion spring 402's effect and blocks up sampling hole 48 this moment, and the anti-blocking rod 440 on the stifled head 401 inserts in the mesh hole on the ARC filter 49, thereby clears up the impurity that blocks up in the ARC filter 49, avoids influencing ARC filter 49's next use.

When the sampling device works, one end of the containing seat 1, which is far away from the sampling cylinder 5, is connected with the existing driving equipment (such as a moving trolley which drives the containing seat 1 to move to a taking-out site), one end of the rotating shaft 20 is connected with the existing driving equipment (such as a motor which drives the rotating shaft 20 to rotate), the rotating shaft 20 drives the telescopic frame 3 to rotate, so that the telescopic frame 3 and the containing seat 1 are arranged at 90 degrees, then the sampling cylinder 5 is driven to move downwards through the telescopic frame 3 according to the requirements of the sampling site, the downward moving distance of the sampling cylinder 5 can be adjusted according to the actual site requirements, so that the sampling device can be used in a shallow water area or a deep water area, the application range of the sampling device is expanded, meanwhile, the distance between the upper sampling cylinder 5 and the lower sampling cylinder 5 can be adjusted through the adjusting mechanism 4, so as to realize the sampling detection of the domestic drinking water at different depth levels, meanwhile, the problem that the similarity of the sampled samples is too high to achieve the layered sampling effect due to the fact that the distance between the two sampling cylinders 5 is short is solved.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a life drinking water detects uses sampling device, includes that storage seat (1) and the ladder that terminal surface was seted up down in storage seat (1) deposit groove (2), its characterized in that: one end of the ladder storage groove (2) is rotatably connected with an expansion bracket (3) through a rotating shaft (20), the ladder storage groove (2) is used for storing the expansion bracket (3), and one side, far away from the ladder storage groove (2), of the expansion bracket (3) is provided with a sampling cylinder (5) through an adjusting mechanism (4);

the adjusting mechanism (4) comprises a fixing frame (40), the fixing frame (40) is fixedly connected with the middle part of one side, far away from the ladder storage groove (2), of the telescopic frame (3), the fixing frame (40) is formed by fixedly connecting two fixing plates, sliding grooves (41) are formed in opposite surfaces of the two fixing plates, an adjusting shaft (42) is connected between the two sliding grooves (41) in a sliding mode, adjusting sliding grooves which are arranged up and down are formed in one side, far away from the ladder storage groove (2), of the telescopic frame (3), Z-shaped frames (43) which are symmetrically arranged up and down are connected in the two adjusting sliding grooves in a sliding mode, fixed shafts (44) are connected to opposite surfaces of the two Z-shaped frames (43) in a rotating mode, two sampling cylinders (5) are respectively sleeved on the upper fixed shaft (44) and the lower fixed shaft (44), the sampling cylinders (5) are arranged up and down, the two sampling cylinders (5) are respectively located on two sides of the fixing frame (40), and annular grooves (45) are formed in end faces, close to the fixing frame (40), annular groove (45) internal rotation is connected with and rotates and is connected with connecting seat (46), articulated regulation pole (47) are gone up in connecting seat (46), the one end of keeping away from connecting seat (46) of regulation pole (47) rotates with regulating spindle (42) and is connected, the lateral wall of sampling tube (5) is close to upper end department and sets up symmetrical arrangement's thief hole (48), install ARC filter screen (49) on thief hole (48), install symmetrical arrangement's mounting panel in sampling tube (5), sliding connection has plug (401) of blockking up thief hole (48) on the mounting panel, be connected through extrusion spring (402) between plug (401) and the mounting panel lateral wall, install the pulling subassembly that drives plug (401) removal in sampling tube (5).

2. The sampling device for drinking water detection according to claim 1, characterized in that: the pulling assembly comprises two rotating grooves (410) formed in opposite ends of the fixed shaft (44), winding grooves (411) communicated with the rotating grooves (410) are formed in the fixed shaft (44), the rotating grooves (410) penetrate through the fixed shaft (44), winding shafts (412) are rotatably connected to the Z-shaped frame (43), two support plates (413) which are symmetrically arranged are jointly mounted on the two fixed plates, a connecting rod (414) is rotatably connected between the two support plates (413), the connecting rod (414) penetrates into the rotating grooves (410), extending grooves are formed in two ends of the connecting rod (414), limiting grooves which are symmetrically arranged are formed in the extending grooves, the winding shafts (412) penetrate into the extending grooves after penetrating through the rotating grooves (410), limiting blocks (415) which are slidably connected with the limiting grooves are mounted on the side walls of the winding shafts (412), and pulling ropes (416) are mounted at one ends, far away from the plugging holes, of the plugging heads (401), pulling rope (416) run through behind sampling tube (5) and rolling-up groove (411) and be connected with rolling-up groove (411), install in sampling tube (5) and carry out removal sealed sealing washer (417) to pulling rope (416), rotate between two fixed plates and be connected with axis of rotation (418), be connected through worm gear transmission between axis of rotation (418) and connecting rod (414).

3. The sampling device for drinking water detection according to claim 2, characterized in that: the side wall of the rotating groove (410) is provided with symmetrically-arranged fan-shaped grooves (420), the connecting rod (414) is provided with symmetrically-arranged abutting blocks (421), and the abutting blocks (421) are positioned in the fan-shaped grooves (420).

4. The sampling device for drinking water detection according to claim 3, characterized in that: the sampling hole (48) is provided with a hole expanding groove (430), and the end face of the Z-shaped frame (43) close to the sampling tube (5) is provided with a cleaning brush (431) corresponding to the sampling hole (48).

5. The sampling device for drinking water detection according to claim 4, wherein: one end of the plugging head (401) close to the sampling hole (48) is of an arc-shaped structure, anti-blocking rods (440) which are uniformly distributed are mounted at the arc-shaped end of the plugging head (401), and the anti-blocking rods (440) are in one-to-one correspondence with meshes on the arc-shaped filter screen (49).

6. The sampling device for drinking water detection according to claim 1, characterized in that: support column (451) are installed through bracing piece (450) to the terminal surface that Z type frame (43) is close to sampling tube (5), and support column (451) rotate with the ring channel to be connected, and install on support column (451) to rotate and establish annular seat (452) on fixed axle (44), annular seat (452) and connecting seat (46) fixed connection.

7. The sampling device for drinking water detection according to claim 1, characterized in that: the telescopic frame (3) comprises a rotating plate (30) fixedly connected to a rotating shaft (20), a lower sliding groove (31) is formed in the end face, far away from the step storage groove (2), of the rotating plate (30), an extension plate (32) is connected to the lower sliding groove (31) in a sliding mode, a fixing frame (40) is fixedly connected with the extension plate (32), an adjusting sliding groove is formed in the side wall, far away from the rotating plate (30), of the extension plate (32), a guide groove is formed in the end face, close to the rotating plate (30), of the extension plate (32), a guide plate (33) connected with the guide groove in a sliding mode is installed at the lower end of the rotating plate (30), the guide plate (33) is connected with a guide wheel (34) in a rotating mode through an ear plate, symmetrically arranged ear seats (35) are installed on the end face, far away from the step storage groove (2), of the storage seat (1), a driving shaft (36) is connected between the two ear seats (35) in a rotating mode, and the winding rope (38) in opposite winding directions is connected to the driving shaft (36), the driving shaft (36) is sleeved with a limiting seat (37) for limiting the winding ropes (38), one winding rope (38) penetrates through the storage plate, the extension plate (32) and the guide plate (33) and then is connected with the lower end of the guide groove, and the other winding rope (38) penetrates through the storage plate and the extension plate (32) and then bypasses the guide wheel (34) and is connected with the upper end of the guide groove.

8. The sampling device for domestic drinking water detection according to claim 7, wherein: the lower end of the lower chute (31) is provided with drain holes (310) which are uniformly distributed.

9. The sampling device for drinking water detection according to claim 1, characterized in that: the sampling cylinder (5) is of a conical hollow column structure with the diameter gradually decreasing downwards.