Water source sampling device with stratified sampling function

Abstract

The invention provides a water source sampling device with a stratified sampling function, and relates to the technical field of water source sampling devices.The water source sampling device is characterized in that a water inlet groove is formed in the circumferential side wall of a sampling cup in a penetrating mode, an arc-shaped sealing plate capable of sliding straightly is installed on the water inlet groove, and a rubber pad matched with the arc-shaped sealing plate in shape is fixed to the inner side of the arc-shaped sealing plate in an adhering mode; a vertical driving shaft is rotatably mounted in the space of the periphery of the row of sampling cups, the tail ends of the row of connecting pieces are in sliding connection with the vertical driving shaft, a protruding key strip is integrally formed on the vertical driving shaft, and the upper end and the lower end of the key strip extend to the upper end and the lower end of the vertical driving shaft; and the vertical driving shaft is in transmission with a row of connecting pieces through a key bar. The row of connecting rods, the connecting pieces and the vertical driving shaft are jointly connected to form a mechanism for synchronously driving the row of arc-shaped sealing plates to be opened and closed, compared with the prior art, the trouble that the row of arc-shaped sealing plates need to be opened and closed step by step in sequence during sampling is omitted through the mechanism, and operation and use are convenient and fast.

Description

Technical Field

[0001] The invention relates to the technical field of water source sampling devices, and in particular to a water source sampling device with a stratified sampling function. Background Art

[0002] A water sampling device with stratified sampling function is a device designed to collect water samples from different depths, mainly used in environmental monitoring, scientific research and other fields. This device can ensure that representative water samples are collected from each specified depth for subsequent analysis of water quality parameters such as pollutant concentration, dissolved oxygen, temperature, etc.

[0003] In order to improve the flexibility of sampling and better apply to sampling water sources at different depths, the existing water source sampling devices often set the multiple sampling containers for stratified sampling in a form of slidable height adjustment. Due to the limitation of the free sliding characteristics of the multiple sampling containers, it is difficult or impossible to set a synchronous driving switch mechanism for the cover plates of the water inlets on the multiple sampling containers, so that during the sampling operation, the multiple cover plates need to be opened and closed step by step, which is troublesome and inconvenient to operate. Although some devices have successfully configured a synchronous drive switch mechanism for the cover, the optimization design of these synchronous drive switch mechanisms is not reasonable enough, and they cannot be used for the sliding adjustment of multiple sampling containers. They cannot automatically follow the height changes of the sampling containers and adjust to the corresponding normal operating height. Additional manual operation and adjustment are required, which is troublesome and inconvenient to operate, reducing the convenience brought by the synchronous opening and closing of the cover by the synchronous drive switch mechanism. Summary of the invention

[0004] In view of this, the present invention provides a water source sampling device with a stratified sampling function to solve the problem that the synchronous drive switch mechanism cannot be used for sliding adjustment of multiple sampling containers, cannot automatically follow the height changes of the sampling containers to adjust to the corresponding normal operating height, and requires additional manual operation and adjustment, which is cumbersome and inconvenient to operate.

[0005] The technical solution proposed by the present invention is: a water source sampling device with a layered sampling function, specifically comprising: sampling cups, wherein the sampling cups are arranged in a row at intervals from top to bottom, wherein a U-shaped vertical support frame is welded on the circumferential outer wall of a sampling cup at the bottom, and the remaining sampling cups are slidably arranged on the U-shaped vertical support frame in sequence; A water inlet groove is formed through the circumferential side wall of the sampling cup, and a straight sliding arc-shaped sealing plate is installed on the water inlet groove, and a rubber pad with a suitable shape is glued and fixed to the inner side of the arc-shaped sealing plate; a connecting rod is rotatably connected to the middle position of the arc-shaped sealing plate, and a connecting piece is rotatably connected to the head end of the connecting rod; A vertical drive shaft is rotatably installed in the space outside the circumference of a row of sampling cups, the tail end of a row of connecting parts is slidably connected to the vertical drive shaft, and a protruding key bar is integrally formed on the vertical drive shaft, the upper and lower ends of the key bar extend to the upper and lower ends of the vertical drive shaft, and the vertical drive shaft is transmitted to the row of connecting parts through the key bar.

[0006] Furthermore, Four longitudinal support positioning shafts are symmetrically welded on the sampling cup at both sides of the water inlet trough, and the arc-shaped sealing plate is slidably matched with the four longitudinal support positioning shafts; The connecting piece is composed of a U-shaped frame and a shaft ring integrally formed at the rear end of the U-shaped frame, wherein the shaft ring is slidably sleeved and matched with the vertical driving shaft.

[0007] Furthermore, A longitudinal support mounting plate is welded to the middle position of the horizontal support side rod at the top end of the U-shaped vertical support frame, and a longitudinal positioning plate is welded to the middle position of the bottom of the bottommost sampling cup. The top and bottom ends of the vertical drive shaft correspond to the longitudinal support mounting plate and the head end of the longitudinal positioning plate for rotational cooperation.

[0008] Furthermore, A swing rod is welded to the top of the vertical drive shaft, and a vertical plug rod is slidably installed on the head end of the swing rod through the spring push, and the bottom end of the vertical plug rod is inserted and connected with the longitudinal support mounting plate; An L-shaped support rod is welded to the head end of the longitudinal support mounting plate, and the vertical plug rod is pushed through and plugged into the longitudinal support mounting plate and the head end of the L-shaped support rod by a spring.

[0009] Furthermore, Two sliding ears are symmetrically welded on the circumferential side wall of the sliding sampling cup, and the two sliding ears correspond to the two vertical support side rods of the U-shaped vertical support frame for sliding cooperation, and tightening bolts are screwed through the two sliding ears and installed, and the head ends of the two tightening bolts correspond to the two vertical support side rods of the U-shaped vertical support frame for pressing and contacting.

[0010] Furthermore, A drainage pipe is welded to the bottom part of the circumferential side wall of the sampling cup at the opposite side of the water inlet trough, and a hexagonal sliding shaft is installed at the middle position of the top end of the bottom plate of the sampling cup through spring pushing and sliding. The hexagonal sliding shaft and the drainage pipe penetrate and slide, and a plug is welded to the head end of the hexagonal sliding shaft, which is used to plug and seal the opening of the head end of the drainage pipe; A finger ring is welded to the top of the plug.

[0011] Furthermore, The plug is composed of a circular plugging disk and a circular plugging block integrally formed on the inner side of the circular plugging disk and arranged concentrically with the circular plugging disk, wherein a rubber gasket is glued and fixed to the outer edge of the circumference of the inner side of the circular plugging disk, and the circular plugging block is plugged into the opening at the head end of the drain pipe, and the rubber gasket is in press-against contact with the head end of the drain pipe.

[0012] Furthermore, A detachable rubber plug is fixed to the half sleeve near the head end of the hexagonal sliding shaft. When the rubber plug follows the hexagonal sliding shaft to slide toward the drain pipe in a large range, it cooperates with the drain pipe squeezing plug to wipe and clean the inner wall of the drain pipe.

[0013] The water source sampling device with stratified sampling function provided by the present invention has the following beneficial effects: 1. When the lifting sampling device in water cannot meet the sampling requirements of water sources at a specific depth, a row of sampling cups can be slid up and down along the U-shaped vertical support frame to adjust the row of sampling cups to a specific depth for sampling water sources at a specific depth. The sliding adjustment setting of the row of sampling cups can improve the sampling flexibility of the device, meet more complex and deeper sampling requirements, and make the device more widely used.

[0014] 2. A row of connecting rods, connecting parts and a vertical driving shaft are connected together to form a mechanism for synchronously driving a row of arc-shaped sealing plates to open and close. Compared with the prior art, this mechanism enables the present invention to overcome the limitation of the free sliding adjustment characteristics of a row of sampling cups, and successfully provides a mechanism for synchronously driving the opening and closing of a row of sampling cups, thereby eliminating the trouble of opening and closing a row of arc-shaped sealing plates in steps during sampling. The operation is convenient and easy to use, which helps to simplify the sampling operation steps and improve the efficiency of the sampling operation.

[0015] 3. A row of connecting members is indirectly connected to a row of sampling cups through a row of connecting rods and a row of arc-shaped sealing plates. This allows the row of connecting members to be driven to slide up and down to adjust the height to a corresponding height that can normally drive the row of arc-shaped sealing plates when the row of sampling cups are slid up and down. Compared with the prior art, the trouble of additional manual effort to slide and adjust the row of connecting members when adjusting the height of the row of sampling cups is eliminated. The operation is convenient and easy to use, which helps to further simplify the sampling operation steps of the device and improve the sampling operation efficiency. It avoids the need to add additional sliding adjustment steps for the row of connecting members on the basis of simplifying the operation steps for the synchronous opening and closing of the row of arc-shaped sealing plates, which helps to ensure the convenience brought by the synchronous opening and closing of the row of arc-shaped sealing plates.

[0016] Fourth, the simple action of pushing and pulling the hexagonal sliding shaft back and forth can drive the rubber plug to slide back and forth to complete the cleaning of the inner wall of the drain pipe, which makes the cleaning operation of the inner wall of the drain pipe convenient and efficient; the hexagonal sliding shaft can be used as a sliding installation and positioning of the plug and as a sliding installation and positioning of the rubber plug, which has the effect of using one device for two purposes and can save the need for an additional sliding installation and positioning structure specifically configured for the plug, which helps to simplify the overall structure and cost of the device to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0018] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0019] In the attached picture: Figure 1 The overall structural schematic diagram of the present invention is shown; Figure 2 The overall rear side structure schematic diagram of the present invention is shown; Figure 3 The overall bottom side structure schematic diagram of the present invention is shown; Figure 4 A schematic diagram showing the disassembly state of the cup cover and the arc-shaped sealing plate of the present invention is shown; Figure 5 A schematic diagram of the inner side structure of a half-section of a sampling device of the present invention is shown; Figure 6 The schematic diagram of the hexagonal sliding shaft structure of the present invention is shown; Figure 7 A schematic diagram of the vertical drive shaft structure of the present invention is shown; Figure 8 The present invention shows Figure 1 A schematic diagram of the enlarged structure of part A.

[0020] List of reference numerals: 1. Sampling cup; 101. Cup cover; 102. Sliding ear; 103. Longitudinal positioning plate; 104. U-shaped vertical support frame; 1041. Longitudinal support mounting plate; 105. Longitudinal support positioning shaft; 106. Water inlet trough; 107. Drain pipe; 2. Vertical drive shaft; 201. Swing rod; 202. Vertical plug rod; 3. arc-shaped sealing plate; 301. rubber pad; 302. connecting rod; 303. connecting piece; 4. Hexagonal sliding shaft; 401. Plug; 402. Finger ring; 403. Rubber plug. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0022] For the convenience of description, the two sides where the sliding ears 102 are located are marked as the left and right sides, and the side where the drainage pipe 107 is located is marked as the rear side.

[0023] Please refer to Figures 1 to 8 ; Embodiment 1: The present invention provides a water source sampling device with a layered sampling function, comprising: a sampling cup 1, wherein the sampling cups 1 are arranged in a row at intervals from top to bottom, wherein a U-shaped vertical support frame 104 is welded on the circumferential outer wall of the sampling cup 1 at the bottom, and the remaining sampling cups 1 are slidably arranged on the U-shaped vertical support frame 104 in sequence; A water inlet groove 106 is formed on the circumferential side wall of the sampling cup 1, and a straight sliding arc-shaped sealing plate 3 is installed on the water inlet groove 106, and a rubber pad 301 of a suitable shape is glued and fixed to the inner side of the arc-shaped sealing plate 3; a connecting rod 302 is rotatably connected to the middle position of the arc-shaped sealing plate 3, and a connecting piece 303 is rotatably connected to the head end of the connecting rod 302; The arc-shaped sealing plate 3 can implement top pressure sealing on the water inlet trough 106 through the rubber pad 301; the whole sampling device that slides up and down in the water can use a row of sampling cups 1 to sample water sources of different depths. When the sampling device that lifts up and down in the water cannot meet the requirements of sampling water sources of a specific depth, a row of sampling cups 1 can be slid up and down along the U-shaped vertical support frame 104 to adjust the row of sampling cups 1 to a specific depth suitable for sampling water sources of a specific depth. The sliding adjustment setting of the row of sampling cups 1 can enhance the flexibility of the sampling device, meet more complex sampling requirements with more depths, and make the device more widely used. A vertical drive shaft 2 is rotatably installed in the space outside the circumference of a row of sampling cups 1, and the tail end of a row of connecting members 303 is slidably connected to the vertical drive shaft 2, and a protruding key bar is integrally formed on the vertical drive shaft 2, and the upper and lower ends of the key bar extend to the upper and lower ends of the vertical drive shaft 2, and the vertical drive shaft 2 is driven by the key bar and the row of connecting members 303; Through a row of connecting rods 302 and connecting pieces 303, the vertical drive shaft 2 can be torsionally driven to drive a row of arc-shaped sealing plates 3 to synchronously slide forward and backward to open and close a row of water inlet troughs 106 at one time, and a row of connecting pieces 303 are slidably connected and installed with the vertical drive shaft 2, and can slide up and down along the vertical drive shaft 2 when a row of sampling cups 1 slide up and down, and continuously and effectively connect with the vertical drive shaft 2 in transmission, so as to ensure that the vertical drive shaft 2 can normally and effectively implement the synchronous opening and closing function of the row of arc-shaped sealing plates 3, and ensure that the synchronous opening and closing function of the row of arc-shaped sealing plates 3 can be applicable to and compatible with the height adjustment of a row of sampling cups 1; A row of connecting rods 302, a connecting piece 303 and a vertical driving shaft 2 are connected together to form a mechanism for synchronously driving a row of arc-shaped sealing plates 3 to open and close. Compared with the prior art, this mechanism enables the present invention to overcome the limitation of the free sliding adjustment characteristics of a row of sampling cups 1, and successfully provides a mechanism for synchronously driving the opening and closing of a row of sampling cups 1, thereby eliminating the trouble of opening and closing a row of arc-shaped sealing plates 3 in sequence step by step during sampling. The operation is convenient and easy to use, which helps to simplify the sampling operation steps and improve the sampling operation efficiency. A row of connecting members 303 are indirectly connected to a row of sampling cups 1 through a row of connecting rods 302 and a row of arc-shaped sealing plates 3. This allows the row of connecting members 303 to be driven to slide up and down to a corresponding height that can normally drive the row of arc-shaped sealing plates 3 when the row of sampling cups 1 slides up and down to adjust their height. Compared with the prior art, the trouble of additional manual effort to slide and adjust the row of connecting members 303 when adjusting the height of the row of sampling cups 1 is eliminated. The operation is convenient and easy to use, which helps to further simplify the sampling operation steps of the device and improve the sampling operation efficiency. It avoids the need to add an additional sliding adjustment step for the row of connecting members 303 on the basis of simplifying the operation steps for synchronously opening and closing a row of arc-shaped sealing plates 3, which helps to ensure the convenience brought by the synchronous opening and closing of a row of arc-shaped sealing plates 3.

[0024] Preferably, Four longitudinal support positioning shafts 105 are symmetrically welded on both sides of the water inlet groove 106 on the sampling cup 1, and the arc-shaped sealing plate 3 is slidably matched with the four longitudinal support positioning shafts 105; the connecting piece 303 is composed of a U-shaped frame and a shaft ring integrally formed at the rear end of the U-shaped frame, wherein the shaft ring is slidably fitted with the vertical drive shaft 2.

[0025] Preferably, A longitudinal support mounting plate 1041 is welded to the middle position of the horizontal support side rod at the top end of the U-shaped vertical support frame 104, and a longitudinal positioning plate 103 is welded to the middle position of the bottom of the bottommost sampling cup 1, and the top and bottom end parts of the vertical driving shaft 2 correspond to the longitudinal support mounting plate 1041 and the head end part of the longitudinal positioning plate 103 to penetrate and rotate together.

[0026] Preferably, A swing rod 201 is welded to the top of the vertical driving shaft 2, and a vertical plug rod 202 is installed on the head end of the swing rod 201 through a spring push, and the bottom end of the vertical plug rod 202 is inserted and connected with the longitudinal support mounting plate 1041; an L-shaped support rod is welded to the head end of the longitudinal support mounting plate 1041, and the vertical plug rod 202 is inserted and connected with the longitudinal support mounting plate 1041 and the head end of the L-shaped support rod through a spring push; The vertical plug rod 202 is inserted into the fixed rocker arm 201 and the vertical drive shaft 2, so that a row of arc-shaped sealing plates 3 are pressed and maintained on a row of water inlet grooves 106, thereby covering and sealing the row of water inlet grooves 106, and the vertical plug rod 202 can erect the drive shaft 2 through the rocker arm 201 to implement positive and negative torsional drive.

[0027] Preferably, Two sliding ears 102 are symmetrically welded on the circumferential side wall of the sliding sampling cup 1, and the two sliding ears 102 are slidably matched with the two vertical support side rods of the U-shaped vertical support frame 104, and the two sliding ears 102 are screwed and installed with tightening bolts, and the head ends of the two tightening bolts are pressed against the two vertical support side rods of the U-shaped vertical support frame 104; The two tightening bolts on the slidably mounted sampling cup 1 can tighten and position the sampling cup 1 at the height position after the sliding adjustment.

[0028] Preferably, The bottom part of the circumferential side wall of the sampling cup 1 is welded with a drain pipe 107 at the opposite side of the water inlet groove 106, and a hexagonal sliding shaft 4 is installed in the middle position of the top end of the bottom plate of the sampling cup 1 through a spring push-pushing sliding. The hexagonal sliding shaft 4 and the drain pipe 107 penetrate and slide in cooperation. The head end of the hexagonal sliding shaft 4 is welded with a plug 401, and the plug 401 is used to plug and block the opening of the head end of the drain pipe 107; a finger ring 402 is welded and supported above the top end of the plug 401; The spring on the hexagonal sliding shaft 4 can push the plug 401 forward, pressing the plug 401 against the opening at the head end of the drain pipe 107, thereby sealing the opening at the head end of the drain pipe 107; the drain pipe 107 is used to discharge the water sample contained in the sampling cup 1, and the plug 401 can be slid backward and separated from the opening at the head end of the drain pipe 107, so that the drain pipe 107 can be opened to discharge the water sample, and the plug 401 and the hexagonal sliding shaft 4 can be manually pulled back and forth by the finger ring 402, and the finger ring 402 is placed above the top of the plug 401 and away from the opening at the head end of the drain pipe 107, so that when discharging the water sample, the water sample sprayed from the opening at the head end of the drain pipe 107 can avoid splashing the hands of the staff, thereby saving the trouble of subsequent hand cleaning.

[0029] Preferably, The plug 401 is composed of a circular plugging disk and a circular plugging block integrally formed on the inner side of the circular plugging disk and arranged concentrically with the circular plugging disk, wherein a rubber gasket is glued and fixed to the outer edge of the circumference of the inner side of the circular plugging disk, and the circular plugging block is plugged and matched with the opening of the head end of the drain pipe 107, and the rubber gasket is pressed against the head end of the drain pipe 107; The plug 401 can squeeze and seal the opening of the first end of the drain pipe 107 through the rubber gasket.

[0030] Preferably, A removable rubber plug 403 is fixed to the half sleeve near the head end of the hexagonal sliding shaft 4. When the rubber plug 403 follows the hexagonal sliding shaft 4 and slides toward the drain pipe 107, it is pressed and plugged into the drain pipe 107 to wipe and clean the inner wall of the drain pipe 107. When the rubber plug 403 slides backward significantly following the hexagonal sliding shaft 4, it is inserted into the drain pipe 107. At this time, the outer circumferential portion of the rubber plug 403 is in squeezed and frictionally contacted with the inner wall of the drain pipe 107, so that the inner wall of the drain pipe 107 can be cleaned by sliding and wiping. Moreover, only the simple action of pulling the hexagonal sliding shaft 4 back and forth can drive the rubber plug 403 to slide back and forth to complete the cleaning of the inner wall of the drain pipe 107, which makes the cleaning operation of the inner wall of the drain pipe 107 convenient and efficient. The hexagonal sliding shaft 4 can be used as a sliding installation and positioning for the plug 401 and for the rubber plug 403, which has a dual-purpose use effect and can save the need for an additional sliding installation and positioning structure specially configured for the plug 401, which helps to simplify the overall structure and cost of the device to a certain extent. It is worth noting that: when the drain pipe 107 is switched on and off under normal conditions, the sliding range of the plug 401 and the hexagonal sliding shaft 4 should be controlled to avoid the rubber plug 403 being inserted into the drain pipe 107 to block and affect the normal discharge of the water sample; A cup cover 101 is screwed onto the top opening of the sampling cup 1 .

[0031] The working principle of this embodiment is as follows: when in use, firstly, the device is inserted into the water as a whole and a row of arc-shaped sealing plates 3 is opened. After a row of arc-shaped sealing plates 3 is opened, water is poured into a row of sampling cups 1 through a row of water inlet grooves 106, and then a row of arc-shaped sealing plates 3 is closed to complete the sampling of the water source; The arc-shaped sealing plate 3 can implement pressure sealing on the water inlet trough 106 through the rubber pad 301; the whole sampling device can be slid up and down in the water to sample water sources of different depths using a row of sampling cups 1. When the sampling device can not meet the sampling requirements of a water source of a specific depth, a row of sampling cups 1 can be slid up and down along the U-shaped vertical support frame 104 to adjust a row of sampling cups 1 to a specific depth suitable for sampling water sources of a specific depth. The two tightening bolts on the slidingly mounted sampling cup 1 can tighten the sampling cup 1 to position it at the height position after the sliding adjustment. Through a row of connecting rods 302 and connecting pieces 303, the vertical drive shaft 2 can be twisted forward and backward to drive a row of arc-shaped sealing plates 3 to slide back and forth synchronously to open and close a row of water inlet grooves 106 at one time, and a row of connecting pieces 303 are slidably connected and installed with the vertical drive shaft 2, and can slide up and down along the vertical drive shaft 2 when a row of sampling cups 1 slide up and down, and continuously and effectively connect with the vertical drive shaft 2 to ensure that the vertical drive shaft 2 can normally and effectively implement the synchronous opening and closing function of the row of arc-shaped sealing plates 3. The vertical plug rod 202 is plugged into the fixed swing rod 201 and the vertical drive shaft 2, so that the row of arc-shaped sealing plates 3 are pressed against the row of water inlet grooves. On 106, a row of water inlet troughs 106 is covered and sealed, and the upright plug rod 202 can erect the driving shaft 2 through the rocker arm 201 to implement positive and negative torsional drive; the spring on the hexagonal sliding shaft 4 can push the plug 401 forward, and press the plug 401 against the head end opening of the drain pipe 107 to achieve the blocking of the head end opening of the drain pipe 107; the drain pipe 107 is used to discharge the water sample contained in the sampling cup 1, and the plug 401 can be slid backward and separated from the head end opening of the drain pipe 107, so that the drain pipe 107 can be opened to discharge the water sample, and the plug 401 and the hexagonal sliding shaft 4 can be manually pulled back and forth through the finger ring 402.

[0032] In this article, there are a few points to note: 1. The drawings of the embodiments of the present invention only involve structures related to the embodiments of the present invention, and other structures can refer to the general design.

[0033] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0034] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A water source sampling device with a stratified sampling function, comprising: Sampling cups (1), wherein the sampling cups (1) are arranged in a row at intervals from top to bottom, wherein a U-shaped vertical support frame (104) is welded on the circumferential outer wall of the sampling cup (1) at the bottom, and the remaining sampling cups (1) are slidably arranged on the U-shaped vertical support frame (104) in sequence; The invention is characterized in that a water inlet groove (106) is formed through the circumferential side wall of the sampling cup (1), a straight sliding arc-shaped sealing plate (3) is installed on the water inlet groove (106), a rubber pad (301) of a suitable shape is glued and fixed to the inner side of the arc-shaped sealing plate (3); a connecting rod (302) is rotatably connected to the middle position of the arc-shaped sealing plate (3), and a connecting piece (303) is rotatably connected to the head end of the connecting rod (302); A vertical drive shaft (2) is rotatably mounted in a space outside the circumference of a row of sampling cups (1); the tail ends of a row of connecting members (303) are slidably connected to the vertical drive shaft (2); and a protruding key bar is integrally formed on the vertical drive shaft (2); the upper and lower ends of the key bar extend to the upper and lower ends of the vertical drive shaft (2); the vertical drive shaft (2) is driven by the key bar and the row of connecting members (303).

2. A water source sampling device with stratified sampling function according to claim 1, characterized in that: Four longitudinal support positioning shafts (105) are symmetrically welded on the sampling cup (1) at two sides of the water inlet groove (106), and the arc-shaped sealing plate (3) is slidably matched with the four longitudinal support positioning shafts (105); The connecting member (303) is composed of a U-shaped frame and a shaft ring integrally formed at the rear end of the U-shaped frame, wherein the shaft ring is slidably sleeved with the vertical drive shaft (2).

3. A water source sampling device with stratified sampling function according to claim 1, characterized in that: A longitudinal support mounting plate (1041) is welded to the middle position of the cross support side rod at the top end of the U-shaped vertical support frame (104), and a longitudinal positioning plate (103) is welded to the middle position of the bottom of the bottommost sampling cup (1), and the top and bottom end portions of the vertical drive shaft (2) are correspondingly connected and rotatably matched with the head end portions of the longitudinal support mounting plate (1041) and the longitudinal positioning plate (103).

4. A water source sampling device with stratified sampling function according to claim 3, characterized in that: A swing rod (201) is welded to the top end of the vertical drive shaft (2), a vertical plug rod (202) is slidably installed through the head end of the swing rod (201) by means of a spring push, and the bottom end of the vertical plug rod (202) is inserted through and connected to the longitudinal support mounting plate (1041); An L-shaped support rod is welded to the head end of the longitudinal support mounting plate (1041), and the vertical plug rod (202) is inserted and engaged with the longitudinal support mounting plate (1041) and the head end of the L-shaped support rod through spring pushing.

5. A water source sampling device with stratified sampling function according to claim 1, characterized in that: Two sliding ears (102) are symmetrically welded on the circumferential side wall of the sliding sampling cup (1), and the two sliding ears (102) are slidably matched with the two vertical support side rods of the U-shaped vertical support frame (104), and tightening bolts are screwed through the two sliding ears (102), and the head ends of the two tightening bolts are pressed against the two vertical support side rods of the U-shaped vertical support frame (104).

6. A water source sampling device with stratified sampling function according to claim 1, characterized in that: A drainage pipe (107) is welded to the bottom portion of the circumferential side wall of the sampling cup (1) at a position opposite to the water inlet groove (106), and a hexagonal sliding shaft (4) is slidably mounted at the middle position of the top end of the bottom plate of the sampling cup (1) through a spring push, the hexagonal sliding shaft (4) and the drainage pipe (107) penetrate and slide in cooperation, and a plug (401) is welded to the head end of the hexagonal sliding shaft (4), and the plug (401) is used to plug and seal the head end opening of the drainage pipe (107); A finger ring (402) is welded to the top of the plug (401).

7. A water source sampling device with stratified sampling function according to claim 6, characterized in that: The plug (401) is composed of a circular plugging disk and a circular plugging block integrally formed on the inner side of the circular plugging disk and arranged concentrically with the circular plugging disk, wherein a rubber gasket is glued and fixed to the outer edge of the circumference of the inner side of the circular plugging disk, and the circular plugging block is plugged into the opening of the head end of the drainage pipe (107), and the rubber gasket is in contact with the head end of the drainage pipe (107) by pressing against it.

8. The water source sampling device with stratified sampling function according to claim 6, characterized in that: A detachable rubber plug (403) is fixedly inserted into the half section of the hexagonal sliding shaft (4) close to the head end. When the rubber plug (403) follows the hexagonal sliding shaft (4) and slides greatly toward the drain pipe (107), it is pressed and plugged into the drain pipe (107) to wipe and clean the inner wall of the drain pipe (107).

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