Underground water constant-speed sampling device

Abstract

The invention provides an underground water constant-speed sampling device, and belongs to the technical field of underground water sampling, the underground water constant-speed sampling device comprises a box body, a water inlet pipe is horizontally arranged at the upper part in the box body, the left end of the water inlet pipe penetrates through the left side wall of the box body and is connected with a water suction pump, the right end of the water inlet pipe is provided with a pressure relief assembly, and the bottom of the water inlet pipe is vertically provided with a plurality of water outlet pipes; the underground water constant-speed sampling device comprises a box body, a water inlet pipe and a plurality of water outlet pipes, the water outlet pipes are sequentially arranged in the box body at intervals in the length direction of the water inlet pipe, a sampling bottle is placed below each water outlet pipe, and a first fixing assembly is arranged at the position, located at each water outlet pipe, of the water inlet pipe. The problems that sampling personnel are inconvenient to sample and the working efficiency is low are solved, stable control over the water flow speed in the underground water sample collection process is achieved, automatic control over the sample collection amount is achieved, and air bubbles generated by air mixing in the sampling process are effectively avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of groundwater sampling, and in particular relates to a groundwater constant-speed sampling device. Background Art

[0002] With the development of economy, the country pays more and more attention to the protection of environment, especially the prevention and control of groundwater pollution risk of water and soil resources. Protecting environment and preventing pollution have become a basic requirement for economic development. In order to understand the regional groundwater quality, regular groundwater sample testing is necessary. The quality of sample collection is crucial, which is related to whether the sample can truly reflect the regional water quality.

[0003] The collection of groundwater samples is an important link to ensure the quality control of groundwater samples, but the existing related equipment is lacking. When using the existing high-power water pump to pump water, the water flow is too strong, which makes it inconvenient for the samplers to take samples and the work efficiency is low. In addition, when multiple collection containers are needed to collect groundwater samples at the same time in the prior art, it is often impossible to collect multiple water quality samples at the same time, or because when multiple collections are carried out at the same time, it is inconvenient to choose whether to control one or multiple or all collection bottles at the same time, which brings inconvenience to the collection work. At the same time, in the process of sampling groundwater samples, in order to ensure the standardization, accuracy and representativeness of sample collection, it is also necessary to control the collection speed of groundwater samples so that the groundwater samples are output to the collection container at a constant speed. In particular, the collection of groundwater organic indicator samples has more stringent requirements on the sampling flow rate. In the actual sampling process, due to the difference in the pumping depth and pumping speed of the existing high-power water pump, it is difficult to ensure the groundwater samples collected at a constant speed, thereby affecting the accuracy of the test results. Therefore, a groundwater constant speed sampling device is needed to solve this problem. Summary of the invention

[0004] To achieve the above-mentioned purpose, the present invention provides a groundwater constant-speed sampling device, comprising a box body, a water inlet pipe is horizontally arranged above the inside of the box body, the left end of the water inlet pipe passes through the left side wall of the box body and is connected to a water pump, and a pressure relief assembly is arranged at the right end of the water inlet pipe;

[0005] A plurality of water outlet pipes are vertically arranged at the bottom of the water inlet pipe, and the plurality of water outlet pipes are arranged in sequence and at intervals in the box along the length direction of the water inlet pipe. A sampling bottle is placed under each of the water outlet pipes, and a first fixing component is provided at each of the water inlet pipes.

[0006] Further, the pressure relief assembly includes a horizontally arranged pressure relief pipe, the left end of the pressure relief pipe is fixedly connected to the right end of the water inlet pipe, the right end of the pressure relief pipe is closed through the right side wall of the box body, and a plurality of vertical drain pipes are arranged at intervals at the bottom of the right end of the pressure relief pipe, and the upper end of the drain pipe is connected to the bottom of the pressure relief pipe;

[0007] A baffle is vertically provided in the pressure relief pipe at the left side of the drain pipe, and a spring is horizontally provided on the right side of the baffle, one end of the spring is fixedly connected to the middle of the right side surface of the baffle, and the other end of the spring is fixedly connected to the inner end surface of the right end of the pressure relief pipe, and limit blocks are provided at the upper and lower ends of the left side of the baffle, and the two limit blocks are respectively fixedly connected to the inner side walls of the pressure relief pipe.

[0008] Furthermore, a valve and a first flow meter are provided on the water inlet pipe at the portion of the box body, and a second flow meter and a flow control valve are provided on the water outlet pipe.

[0009] Furthermore, the first fixing assembly includes two first fixing rings, the two first fixing rings are located on the left and right sides of the water outlet pipe, and the two first fixing rings are fixedly mounted on the water inlet pipe, and the upper side of the first fixing ring is fixedly connected with a vertical first fixing rod, and the upper end of the first fixing rod is fixedly connected to the inner top wall of the box body.

[0010] Furthermore, the lower end of the water outlet pipe is fixedly connected to a telescopic hose, and a limit assembly is provided on the telescopic hose;

[0011] The diameter of the lower end of the telescopic hose is smaller than the diameter of the bottle mouth of the sampling bottle, and a lifting component is provided below the sampling bottle.

[0012] Furthermore, the limit assembly includes a horizontally arranged limit plate, which is fixedly mounted at the lower end of the telescopic hose, and the left and right ends of the upper surface of the limit plate are fixedly connected with vertical telescopic rods, and the upper ends of the telescopic rods are respectively fixedly connected to the lower surfaces of the adjacent first fixed rings.

[0013] Furthermore, the lifting assembly includes a horizontally arranged partition, the partition is fixedly connected to the inner side wall of the box body, a plurality of bottom plates are horizontally arranged on the partition, a plurality of sampling bottles are placed on the plurality of bottom plates in a one-to-one correspondence, and a rectangular through hole is opened at the middle of the lower surface of each bottom plate of the partition;

[0014] A threaded rod is vertically provided in the through hole, and a sleeve with a rectangular cross-section is threadedly sleeved on the threaded rod, the upper end of the sleeve vertically passes through the through hole and is fixedly connected to the bottom of the base plate, the lower end of the threaded rod is fixedly connected to a horizontal worm gear, the bottom of the worm gear is rotatably connected to a vertical support rod, the lower end of the support rod is fixedly connected to the bottom wall of the box body, a worm is horizontally meshed on the rear side of the worm gear, a second fixing assembly is provided on the worm, and the right end of the worm is connected to a driving assembly.

[0015] Furthermore, the second fixing assembly includes two second fixing rings, which are rotatably mounted on the left and right ends of the worm gear. A vertical second fixing rod is fixedly connected to the upper side of the second fixing ring, and the upper end of the second fixing rod is fixedly connected to the lower surface of the partition.

[0016] Furthermore, the driving assembly includes a motor disposed at the lower left side of the box body, the motor is fixed on the inner bottom wall of the box body and the output shaft is arranged upward, and a driving wheel is fixedly connected to the output shaft of the motor;

[0017] The left end of the worm is fixedly connected to a first bevel gear, a second bevel gear is horizontally meshed below the first bevel gear, a support seat is provided below the second bevel gear, the support seat is fixed to the inner bottom wall of the box body, a vertical shaft rod is rotatably connected to the upper surface of the support seat, a driven wheel is fixedly sleeved on the upper end of the shaft rod, a conveyor belt is provided between the driven wheel and the driving wheel, and the driving wheel is connected to the driven wheel belt transmission through the conveyor belt;

[0018] A moving rod is vertically arranged between the shaft and the second bevel gear, the upper end of the moving rod is fixedly connected to the second bevel gear, the lower end of the moving rod is inserted into the upper end of the shaft and vertically slidably connected, and a self-locking component is arranged on the moving rod.

[0019] Furthermore, the self-locking assembly includes a limit ring sleeved on the moving rod and rotatably connected, a longitudinal first connecting rod is horizontally arranged on the front side of the limit ring, and a rear end of the first connecting rod is fixedly connected to the limit ring;

[0020] A vertical slide groove is provided on the front side surface of the box body at a position corresponding to the position of the first connecting rod. The front end of the first connecting rod horizontally passes through the slide groove and is located outside the box body. The front end of the first connecting rod is fixedly connected to a transverse second connecting rod, and the end of the second connecting rod away from the first connecting rod is fixedly connected to a rectangular connecting ring.

[0021] The advantages of the present invention are as follows: the present invention provides a groundwater constant-speed sampling device, which not only solves the problem that the existing related equipment is lacking in many, and the water flow is too strong when the existing high-power water pump is used to pump water, causing inconvenience to the sampling personnel and low work efficiency, but also solves the problem that when multiple collection containers are needed to collect groundwater samples at the same time in the prior art, it is often impossible to collect multiple water quality samples at the same time, or it is inconvenient to choose whether to control one or multiple or all sampling bottles at the same time when multiple collections are carried out simultaneously, which brings inconvenience to the collection work. At the same time, it solves the problem that during the sampling process, due to the difference in the pumping depth and the pumping speed of the existing high-power water pump, the constant-speed collection of groundwater samples cannot be guaranteed, improves the accuracy of the sample detection results in the later stage, realizes the stable control of the water flow speed during the groundwater sample collection process, realizes the automatic control of the sample collection amount, effectively avoids the mixing of air and the generation of bubbles during the sampling process, and according to the structural design of the device, the number of sampling bottles inside the box body and the number of some components related to the sampling bottles can be increased or reduced according to the collection needs, and the manufacturing cost can be greatly reduced through the assembled factory assembly line design.

[0022] The present invention is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the internal structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0025] Figure 3 It is an enlarged view of the structure at location A of the present invention.

[0026] Figure 4 It is a schematic diagram of the structure of local parts of the present invention.

[0027] Figure 5 It is a schematic diagram of the external structure of the present invention.

[0028] Figure 6 It is the front view of the external structure of the present invention.

[0029] Figure 7 It is an enlarged view of the structure at B of the present invention.

[0030] Explanation of the reference numerals: 1. housing; 2. water inlet pipe; 3. pressure relief assembly; 31. pressure relief pipe; 32. drain pipe; 33. baffle; 34. spring; 35. stop block; 4. water outlet pipe; 5. sampling bottle; 6. first fixing assembly; 61. first fixing ring; 62. first fixing rod; 7. valve; 8. first flow meter; 9. second flow meter; 10. flow control valve; 11. telescopic hose; 12. stop assembly; 121. stop plate; 122. telescopic rod; 13. lifting assembly; 131. partition; 132. bottom plate; 133. through hole; 134. screw 135. sleeve; 136. worm wheel; 137. support rod; 138. worm; 14. second fixed assembly; 141. second fixed ring; 142. second fixed rod; 15. drive assembly; 151. motor; 152. driving wheel; 153. first bevel gear; 154. second bevel gear; 155. support seat; 156. shaft; 157. driven wheel; 158. conveyor belt; 159. moving rod; 16. self-locking assembly; 161. limit ring; 162. first connecting rod; 163. slide groove; 164. second connecting rod; 165. connecting ring. DETAILED DESCRIPTION

[0031] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific implementation methods, structural features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "aligned", "overlap", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0035] Example 1

[0036] This embodiment provides Figure 1 to Figure 7 The groundwater constant-speed sampling device shown in the figure comprises a box body 1, a water inlet pipe 2 is horizontally arranged at the upper part of the box body 1, the left end of the water inlet pipe 2 passes through the left side wall of the box body 1 and is connected to the water pump, and a pressure relief assembly 3 is arranged at the right end of the water inlet pipe 2;

[0037] A plurality of water outlet pipes 4 are vertically arranged at the bottom of the water inlet pipe 2. The plurality of water outlet pipes 4 are arranged in sequence at intervals along the length direction of the water inlet pipe 2 in the box body 1. A sampling bottle 5 is placed under each water outlet pipe 4. A first fixing component 6 is provided at each water outlet pipe 4 of the water inlet pipe 2.

[0038] When in use, first add hydrochloric acid solution and ascorbic acid to the sampling bottle 5 in advance according to the needs of sample collection, place the sampling bottle 5 in the box 1, align the bottle mouth of the sampling bottle 5 with the outlet pipe 4, and then the staff controls the water pump to pump out the groundwater and transport it to the water inlet pipe 2, and then divert the water from the water inlet pipe 2 to each outlet pipe 4 in turn, and then flow into the sampling bottle 5 from the outlet pipe 4 for collection, thereby avoiding the problem of large water flow and inconvenient sampling caused by a high-power water pump, facilitating sampling for sampling personnel and improving work efficiency. In addition, multiple outlet pipes 4 are used in conjunction with multiple sampling bottles 5 to collect groundwater samples at the same time, which not only can collect multiple water quality samples at the same time, but also can further improve the sampling efficiency.

[0039] Further, the pressure relief assembly 3 includes a horizontally arranged pressure relief pipe 31, the left end of the pressure relief pipe 31 is fixedly connected to the right end of the water inlet pipe 2, the right end of the pressure relief pipe 31 is closed through the right side wall of the box body 1, and a plurality of vertical drain pipes 32 are arranged at intervals at the bottom of the right end of the pressure relief pipe 31, and the upper end of the drain pipe 32 is connected to the bottom of the pressure relief pipe 31;

[0040] A baffle 33 is vertically provided in the pressure relief pipe 31 at the left side of the drain pipe 32, and a spring 34 is horizontally provided on the right side of the baffle 33. One end of the spring 34 is fixedly connected to the middle of the right side surface of the baffle 33, and the other end of the spring 34 is fixedly connected to the inner end surface of the right end of the pressure relief pipe 31. Limit blocks 35 are provided at the upper and lower ends of the left side of the baffle 33, and the two limit blocks 35 are respectively fixedly connected to the inner side wall of the pressure relief pipe 31.

[0041] When the water pump delivers water to the water inlet pipe 2, and the water in the water inlet pipe 2 flows toward the pressure relief pipe 31, and the water pressure in the water inlet pipe 2 is not large, the baffle 33 can be used to prevent the water from flowing out of the drainage pipe 32 on the pressure relief pipe 31. A sealing ring can be fixedly provided on the baffle 33 to further prevent the water flowing from the water inlet pipe 2 to the pressure relief pipe 31 from passing through the baffle 33 and flowing out of the drainage pipe 32 at the bottom of the pressure relief pipe 31.

[0042] When the water in the water inlet pipe 2 flows to the pressure relief pipe 31 and the water pressure in the water inlet pipe 2 is too high, the water pressure will push the baffle 33 to move along the length direction of the pressure relief pipe 31. During the movement of the baffle 33, the spring 34 is compressed until the baffle 33 moves to expose the drain pipe 32, and the water in the pressure relief pipe 31 is discharged outward from the drain pipe 32, thereby achieving the effect of pressure relief.

[0043] Furthermore, a valve 7 and a first flow meter 8 are provided on the part of the water inlet pipe 2 located in the box body 1, and a second flow meter 9 and a flow control valve 10 are provided on the water outlet pipe 4, wherein the valve 7 and the first flow meter 8 are both existing technologies, the valve 7 can be a faucet or a control valve, and the first flow meter 8 is a flow meter commonly used in pipelines with a display screen and capable of displaying detection data. At the same time, a second flow meter 9 for detecting the size of the water flow in the water outlet pipe 4 and a flow control valve 10 for controlling the water flow speed of the water outlet pipe 4 are provided, wherein the flow control valve 10 adopts a flow regulating valve or a balancing valve in the existing technology that maintains a set flow output water flow regardless of how the pressure in the water inlet pipe 2 and the water outlet pipe 4 changes.

[0044] During use, when the staff uses a water pump to extract groundwater for sampling, the first flow meter 8 on the water inlet pipe 2 first displays the value of the water flow size in the water inlet pipe 2, and then the valve 7 on the water inlet pipe 2 controls the size of the water flow in the water inlet pipe 2, and then the second flow meter 9 on the water outlet pipe 4 displays the value of the water flow size in the water pipe 4, and then the flow control valve 10 on the water outlet pipe 4 is used to control the water sample with a stable water flow rate output, so that through the coordinated adjustment of the valve 7, the first flow meter 8, the second flow meter 9 and the flow control valve 10, the water outlet flow rate can be accurately controlled to be less than 100ml / min, and at the same time, it can also effectively avoid the impact of bubbles, so that the water outlet pipe 4 can output a constant speed water flow, thereby making the adjustment process simple, convenient and fast, and at the same time, it can also improve the detection efficiency and accuracy.

[0045] Furthermore, the first fixing assembly 6 includes two first fixing rings 61, which are located on the left and right sides of the water outlet pipe 4, and the two first fixing rings 61 are fixedly mounted on the water inlet pipe 2. The upper side of the first fixing ring 61 is fixedly connected with a vertical first fixing rod 62, and the upper end of the first fixing rod 62 is fixedly connected to the inner top wall of the box body 1.

[0046] The first fixing ring 61 cooperates with the first fixing rod 62 to limit, fix and support the water inlet pipe 2.

[0047] Furthermore, the lower end of the water outlet pipe 4 is fixedly connected to a telescopic hose 11, wherein the most preferred embodiment of the telescopic hose 11 can be made into a metal telescopic corrugated hose, the diameter of the lower end of the telescopic hose 11 is smaller than the diameter of the bottle mouth of the sampling bottle 5, a lifting assembly 13 is provided below the sampling bottle 5, and a limiting assembly 12 is provided on the telescopic hose 11, the limiting assembly 12 includes a horizontally arranged limiting plate 121, the limiting plate 121 is fixedly sleeved at the lower end of the telescopic hose 11, the left and right ends of the upper surface of the limiting plate 121 are fixedly connected with a vertical telescopic rod 122, the upper ends of the telescopic rod 122 are respectively fixedly connected to the lower surfaces of the adjacent first fixing ring 61, through the cooperation of the set limiting plate 121 and the telescopic rod 122, the telescopic hose 11 can be limited and fixed after the position of the telescopic hose 11 is adjusted.

[0048] By means of the telescopic hose 11, when sampling is performed, the lower end of the telescopic hose 11 can be extended into the bottle mouth of the sampling bottle 5 to prevent the sample from flowing out of the sampling bottle 5. After the sampling is completed, the lower end of the telescopic hose 11 is taken out from the bottle mouth of the sampling bottle 5, and then the bottle cap of the sampling bottle 5 is tightened, thereby preventing the volatilization of VOCs in the sample, and realizing the non-disturbance collection of the sample of volatile organic matter-contaminated groundwater, thereby improving the accuracy of sample detection;

[0049] At the same time, because the water in the water inlet pipe 2 flows from left to right, the length of the telescopic hose 11 can be adjusted to ensure that the groundwater pumped into the water inlet pipe 2 can flow into the sampling bottle 5 as much as possible at the same time, thereby ensuring the same constant speed for groundwater sampling.

[0050] Furthermore, the lifting assembly 13 includes a horizontally arranged partition 131, the partition 131 is fixedly connected to the inner wall of the box body 1, a plurality of bottom plates 132 are horizontally arranged on the partition 131, a plurality of sampling bottles 5 are placed on the plurality of bottom plates 132 in a one-to-one correspondence, and a rectangular through hole 133 is opened in the middle of the lower surface of each bottom plate 132 of the partition 131;

[0051] A threaded rod 134 is vertically provided in the through hole 133, and a sleeve 135 with a rectangular cross section is threadedly sleeved on the threaded rod 134. The upper end of the sleeve 135 vertically passes through the through hole 133 and is fixedly connected to the bottom of the bottom plate 132. A horizontal worm gear 136 is fixedly connected to the lower end of the threaded rod 134. A vertical support rod 137 is rotatably connected to the bottom of the worm gear 136. The lower end of the support rod 137 is fixedly connected to the inner bottom wall of the box body 1. A worm 138 is horizontally meshed with the rear side of the worm gear 136. The worm 138 is provided with a second fixing component 14.

[0052] The right end of the worm 138 is connected to a driving assembly 15, which includes a motor 151 disposed at the lower left of the box body 1. The motor 151 is fixed to the inner bottom wall of the box body 1 and the output shaft is arranged upward. A driving wheel 152 is fixedly connected to the output shaft of the motor 151.

[0053] The left end of the worm 138 is fixedly connected to a first bevel gear 153, and a second bevel gear 154 is horizontally meshed below the first bevel gear 153. A support seat 155 is provided below the second bevel gear 154, and the support seat 155 is fixed on the inner bottom wall of the box body 1. A vertical shaft 156 is rotatably connected to the upper surface of the support seat 155. A driven wheel 157 is fixedly sleeved on the upper end of the shaft 156. A conveyor belt 158 ​​is provided between the driven wheel 157 and the driving wheel 152. The driving wheel 152 is connected to the driven wheel 157 through the conveyor belt 158. The belt transmission structure between the driving wheel 152, the driven wheel 157 and the conveyor belt 158 ​​can also be designed as a transmission method of a sprocket and a chain instead;

[0054] A moving rod 159 is vertically provided between the shaft 156 and the second bevel gear 154. The upper end of the moving rod 159 is fixedly connected to the second bevel gear 154, and the lower end of the moving rod 159 is inserted into the upper end of the shaft 156 for vertical sliding connection, and the moving rod 159 rotates with the shaft 156 in the horizontal direction.

[0055] When in use, the staff controls the motor 151 to rotate to drive the driving wheel 152 on the output shaft of the motor 151 to rotate, the driving wheel 152 drives the driven wheel 157 to rotate through the conveyor belt 158, the driven wheel 157 drives the shaft 156 to rotate, the shaft 156 drives the moving rod 159 to rotate, the moving rod 159 drives the second bevel gear 154 to rotate, the second bevel gear 154 drives to rotate by meshing with the first bevel gear 153, the first bevel gear 153 drives the worm 138 to rotate, the worm 138 drives the worm wheel 136 to rotate by meshing with the worm wheel 136, the worm wheel 136 drives the threaded rod 134 to rotate, the threaded rod 134 drives the sleeve 135 to rotate by being threadedly connected with the sleeve 135, and the sleeve 135 drives the sleeve 135 through its own cross section The rectangular through holes 133 are matched with each other to limit the sleeve 135, so that the sleeve 135 can only move in the vertical direction in the through hole 133 as the threaded rod 134 rotates. During the movement of the sleeve 135, the bottom plate 132 is driven to move, and the bottom plate 132 drives the sampling bottle 5 to move toward the telescopic hose 11, which plays a role in height adjustment of the sampling bottle 5, making the bottle mouth of the sampling bottle 5 and the telescopic hose 11 more convenient to cooperate, increasing the adaptability of the sampling bottle 5 and the telescopic hose 11, and can further increase the height position difference between each telescopic hose 11, thereby ensuring that the groundwater pumped into the water inlet pipe 2 by the water pump can flow into the sampling bottle 5 as much as possible at the same time, thereby further ensuring the same constant speed for groundwater sampling.

[0056] Furthermore, the second fixing assembly 14 includes two second fixing rings 141, which are rotatably mounted on the left and right ends of the worm 138. The upper side of the second fixing ring 141 is fixedly connected with a vertical second fixing rod 142, and the upper end of the second fixing rod 142 is fixedly connected to the lower surface of the partition 131.

[0057] The second fixing ring 141 cooperates with the second fixing rod 142 to limit, fix and support the worm 138 .

[0058] Furthermore, the moving rod 159 is provided with a self-locking assembly 16, which includes a limit ring 161 sleeved on the moving rod 159 and rotatably connected, a longitudinal first connecting rod 162 is horizontally provided on the front side of the limit ring 161, and a rear end of the first connecting rod 162 is fixedly connected to the limit ring 161;

[0059] A vertical slide groove 163 is provided on the front side surface of the box body 1 at a position corresponding to the position of the first connecting rod 162. The front end of the first connecting rod 162 horizontally passes through the slide groove 163 and is located outside the box body 1. The front end of the first connecting rod 162 is fixedly connected to a horizontal second connecting rod 164. The end of the second connecting rod 164 away from the first connecting rod 162 is fixedly connected to a rectangular connecting ring 165. The connecting ring 165 can be fixed to the box body 1 by a matching fixing pin.

[0060] When the height of the sampling bottle 5 needs to be adjusted, the first connecting rod 162 is controlled to slide upward in the sliding groove 163, the first connecting rod 162 drives the limiting ring 161 to move, the limiting ring 161 drives the moving rod 159 to move, the moving rod 159 drives the second bevel gear 154 to move, so that the second bevel gear 154 is meshed with the first bevel gear 153, and the first connecting rod 162 drives the moving rod 159 to move while also driving the second connecting rod 164 to move, and the second connecting rod 164 drives the connecting ring 165 to move;

[0061] When the second bevel gear 154 is meshed with the first bevel gear 153, the connecting ring 165 is fixed to the outer wall of the box body 1 by passing the fixing pin through the connecting ring 165, so as to achieve the fixing effect after the second bevel gear 154 is meshed with the first bevel gear 153, so that the staff can choose according to the needs whether to raise one sampling bottle 5, or to raise multiple or all sampling bottles 5, so as to further facilitate the use by the staff.

[0062] The present invention provides a groundwater constant-speed sampling device, which not only solves the problem that the existing related equipment is lacking, the water flow is too strong when the existing high-power water pump is used to pump water, causing inconvenience to the sampling personnel and low work efficiency, but also solves the problem that when multiple collection containers are needed to collect groundwater samples at the same time in the prior art, it is often impossible to collect multiple water quality samples at the same time, or it is inconvenient to choose whether to control one or multiple or all sampling bottles 5 at the same time when multiple collections are carried out simultaneously, which brings inconvenience to the collection work. At the same time, it solves the problem that during the sampling process, due to the difference in the pumping depth and pumping speed of the existing high-power water pump, the constant-speed collection of groundwater samples cannot be guaranteed, improves the accuracy of the sample detection results in the later stage, realizes the stable control of the water flow speed during the groundwater sample collection process, realizes the automatic control of the sample collection amount, effectively avoids the mixing of air and the generation of bubbles during the sampling process, and according to the structural design of the device, the number of sampling bottles 5 inside the box 1 and the number of some components related to the sampling bottles 5 can be increased or reduced according to the collection needs, and the manufacturing cost can be greatly reduced through the assembled factory assembly line design.

[0063] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A groundwater constant speed sampling device, characterized in that: It comprises a box body (1), a water inlet pipe (2) is horizontally arranged at the upper part of the box body (1), the left end of the water inlet pipe (2) passes through the left side wall of the box body (1) and is connected to a water pump, and the right end of the water inlet pipe (2) is provided with a pressure relief assembly (3); A plurality of water outlet pipes (4) are vertically arranged at the bottom of the water inlet pipe (2), and the plurality of water outlet pipes (4) are arranged in sequence and spaced apart in the box body (1) along the length direction of the water inlet pipe (2). A sampling bottle (5) is placed below each of the water outlet pipes (4), and a first fixing component (6) is provided at each of the water outlet pipes (4) of the water inlet pipe (2).

2. A groundwater constant speed sampling device as claimed in claim 1, characterized in that: The pressure relief assembly (3) comprises a horizontally arranged pressure relief pipe (31), the left end of the pressure relief pipe (31) is fixedly connected to the right end of the water inlet pipe (2), the right end of the pressure relief pipe (31) is closed through the right side wall of the box body (1), and a plurality of vertical drainage pipes (32) are arranged at intervals at the bottom of the right end of the pressure relief pipe (31), and the upper end of the drainage pipe (32) is connected to the bottom of the pressure relief pipe (31); A baffle (33) is vertically arranged in the pressure relief pipe (31) at the left side of the drainage pipe (32), and a spring (34) is horizontally arranged on the right side of the baffle (33). One end of the spring (34) is fixedly connected to the middle of the right side surface of the baffle (33), and the other end of the spring (34) is fixedly connected to the inner end surface of the right end of the pressure relief pipe (31). Limit blocks (35) are arranged at the upper and lower ends of the left side of the baffle (33), and the two limit blocks (35) are respectively fixedly connected to the inner side wall of the pressure relief pipe (31).

3. A groundwater constant speed sampling device as claimed in claim 1, characterized in that: The portion of the water inlet pipe (2) located in the box (1) is provided with a valve (7) and a first flow meter (8), and the water outlet pipe (4) is provided with a second flow meter (9) and a flow control valve (10).

4. A groundwater constant speed sampling device as claimed in claim 1, characterized in that: The first fixing assembly (6) comprises two first fixing rings (61), the two first fixing rings (61) are located on the left and right sides of the water outlet pipe (4), and the two first fixing rings (61) are fixedly sleeved on the water inlet pipe (2), and the upper side of the first fixing ring (61) is fixedly connected to a vertical first fixing rod (62), and the upper end of the first fixing rod (62) is fixedly connected to the inner top wall of the box body (1).

5. A groundwater constant speed sampling device as claimed in claim 4, characterized in that: The lower end of the water outlet pipe (4) is fixedly connected to a telescopic hose (11), and a limiter assembly (12) is provided on the telescopic hose (11); The diameter of the lower end of the telescopic hose (11) is smaller than the diameter of the mouth of the sampling bottle (5), and a lifting assembly (13) is provided below the sampling bottle (5).

6. A groundwater constant speed sampling device as claimed in claim 5, characterized in that: The limiting assembly (12) comprises a horizontally arranged limiting plate (121), the limiting plate (121) being fixedly sleeved on the lower end of the telescopic hose (11), the left and right ends of the upper surface of the limiting plate (121) being fixedly connected with vertical telescopic rods (122), the upper ends of the telescopic rods (122) being respectively fixedly connected with the lower surfaces of the adjacent first fixing rings (61).

7. A groundwater constant speed sampling device as claimed in claim 5, characterized in that: The lifting assembly (13) comprises a horizontally arranged partition (131), the partition (131) being fixedly connected to the inner side wall of the box body (1), a plurality of bottom plates (132) being horizontally arranged on the partition (131), a plurality of sampling bottles (5) being placed one by one on the plurality of bottom plates (132), and a rectangular through hole (133) being opened in the middle of the lower surface of each bottom plate (132) of the partition (131); A threaded rod (134) is vertically arranged in the through hole (133), a sleeve (135) with a rectangular cross section is threadedly sleeved on the threaded rod (134), the upper end of the sleeve (135) vertically passes through the through hole (133) and is fixedly connected to the bottom of the bottom plate (132), the lower end of the threaded rod (134) is fixedly connected to a horizontal worm wheel (136), the bottom of the worm wheel (136) is rotatably connected to a vertical support rod (137), the lower end of the support rod (137) is fixedly connected to the inner bottom wall of the box body (1), a worm (138) is horizontally meshed at the rear side of the worm wheel (136), a second fixing assembly (14) is arranged on the worm (138), and the right end of the worm (138) is connected to a driving assembly (15).

8. A groundwater constant speed sampling device as claimed in claim 7, characterized in that: The second fixing assembly (14) comprises two second fixing rings (141), which are rotatably sleeved on the left and right ends of the worm (138), and the upper side of the second fixing ring (141) is fixedly connected with a vertical second fixing rod (142), and the upper end of the second fixing rod (142) is fixedly connected to the lower surface of the partition (131).

9. A groundwater constant speed sampling device as claimed in claim 7, characterized in that: The driving assembly (15) comprises a motor (151) arranged at the lower left side of the box body (1); the motor (151) is fixed on the inner bottom wall of the box body (1) and the output shaft is arranged upward; a driving wheel (152) is fixedly connected to the output shaft of the motor (151); The left end of the worm (138) is fixedly connected with a first bevel gear (153), a second bevel gear (154) is horizontally meshed below the first bevel gear (153), a support seat (155) is provided below the second bevel gear (154), the support seat (155) is fixed on the inner bottom wall of the box body (1), a vertical shaft (156) is rotatably connected to the upper surface of the support seat (155), a driven wheel (157) is fixedly sleeved on the upper end of the shaft (156), a conveyor belt (158) is provided between the driven wheel (157) and the driving wheel (152), and the driving wheel (152) is connected to the driven wheel (157) by the conveyor belt (158); A moving rod (159) is vertically arranged between the shaft rod (156) and the second bevel gear (154); the upper end of the moving rod (159) is fixedly connected to the second bevel gear (154); the lower end of the moving rod (159) is inserted into the upper end of the shaft rod (156) for vertical sliding connection; and a self-locking component (16) is arranged on the moving rod (159).

10. A groundwater constant speed sampling device as claimed in claim 9, characterized in that: The self-locking component (16) comprises a limiting ring (161) sleeved on the moving rod (159) and rotatably connected, a longitudinal first connecting rod (162) is horizontally arranged on the front side of the limiting ring (161), and a rear end of the first connecting rod (162) is fixedly connected to the limiting ring (161); A vertical slide groove (163) is provided on the front side surface of the box body (1) at a position corresponding to the position of the first connecting rod (162); the front end of the first connecting rod (162) horizontally passes through the slide groove (163) and is located outside the box body (1); and the front end of the first connecting rod (162) is fixedly connected to a transverse second connecting rod (164); and the end of the second connecting rod (164) away from the first connecting rod (162) is fixedly connected to a rectangular connecting ring (165).

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