Detection sampler for environmental evaluation after chemical sewage treatment

Abstract

The invention relates to the technical field of sewage sampling detection, and discloses a detection sampler for environmental evaluation after chemical sewage treatment, which comprises a barrel body, a sealing ring is vertically and slidably arranged at the lower part in the barrel body, a flow guide mechanism is arranged at the outer bottom of the barrel body, and the flow guide mechanism comprises a fixed ring fixedly sleeved at the bottom of the outer wall of the barrel body; a plurality of flow guide plates are annularly hinged to the outer wall of the fixing ring at equal intervals, and when the flow guide plates are unfolded in an umbrella shape, sewage is drained to the water inlet hole; a plurality of pressurizing mechanisms are jointly connected between the sealing ring and the flow guide mechanism, and the sealing ring is driven to abut against the barrel body when the flow guide plate is folded towards the barrel shape. The water inlet efficiency of the water inlet hole is improved by unfolding the flow guide plate in an umbrella shape, the exchange efficiency of the interior of the barrel body and an external water source is improved, the flow guide plate is limited by descending the balance weight ring, meanwhile, the driving rod applies pressure to the fixing plate so that the sealing ring and the upper turning cover can tightly abut against the barrel body, and the sealing performance of the barrel body is ensured; the barrel body is prevented from exchanging with an external water source during ascending, and the sampling precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage sampling and detection, and in particular to a detection sampler for environmental assessment after chemical sewage treatment. Background Art

[0002] Wastewater containing various pollutants will be generated during the chemical production process. These wastewaters need to undergo relevant treatment before discharge. Sampling and evaluation are also required after wastewater treatment to ensure that the emission standards are met, thereby ensuring the safety of personnel and the ecological environment.

[0003] In the process of industrial sewage treatment, a barrel-type deep water sampler can be used to collect wastewater samples at different depths and monitor the sewage treatment effect. The barrel-type deep water sampler is mainly composed of a barrel body and an upper cover and a lower cover hinged therewith. When the barrel-type deep water sampler dives in the sewage, the upper and lower covers are opened by the sewage to allow the sewage to enter the barrel body. However, due to the small opening at the bottom of the barrel body, the liquid exchange efficiency between the inside and the outside of the barrel body is poor when the barrel body dives, so that when the barrel body reaches the specified depth, there will be a small amount of sewage in the height of the diving process inside the barrel body, and the upper and lower covers are easy to open during the ascent of the barrel body, resulting in the phenomenon of the sewage inside the barrel body exchanging with the outside again, resulting in inaccurate sampling accuracy. A prior art patent with a patent announcement number of CN114166579A discloses a sewage sampling device, which pushes the outer cylinder to move through the first traction rod, the top cover, the connecting rod and the top ring to expose the needle tube through the rubber block to the outside of the outer cylinder, and then pulls the piston to move to extract the sewage sample.

[0004] However, the prior art still has the following defects: the device requires manual control of the first traction rod and the second traction rod to move to achieve accurate depth sampling, but due to the length of the installation rod, the device is difficult to apply to deep water sampling and has a small applicable scenario. Summary of the invention

[0005] In view of the problem in the prior art that it is difficult for the barrel of a barrel-type deep water sampler to accurately collect sewage samples at a specified depth, a detection sampler for environmental assessment after chemical wastewater treatment is proposed.

[0006] The purpose is: when the barrel body dives, the guide plate unfolds like an umbrella to allow more sewage to enter the barrel body, the counterweight ring descends to limit the guide plate, and the pressure mechanism drives the sealing ring to closely abut against the water inlet hole to prevent the barrel body from exchanging water with the external water source.

[0007] The technical solution of the present invention is a detection sampler for environmental assessment after chemical wastewater treatment, comprising a barrel body, two upper flip covers are symmetrically hingedly connected to the upper port of the barrel body, a plurality of water inlet holes are opened in an annular shape at equal intervals at the bottom of the barrel body, a sealing ring is vertically slidably provided at the lower part of the barrel body, a connecting rod is hingedly connected between the sealing ring and the upper flip cover, a flow guide mechanism is arranged at the bottom of the barrel body, the flow guide mechanism comprises a fixed ring fixedly sleeved on the bottom of the outer wall of the barrel body, a plurality of flow guide plates are hingedly connected in an annular shape at equal intervals on the outer wall of the fixed ring, when the barrel body dives, the flow guide plates are in contact with water and unfold in an umbrella shape, thereby expanding the water inlet range of the lower side of the barrel body, improving the water inlet efficiency of the water inlet holes, and improving the water exchange efficiency between the inside of the barrel body and the external water source; A limiting member is sleeved on the outer side of the fixing ring, and when the limiting member descends, the guide plate is rotationally limited, and a connecting member is fixedly connected to the limiting member, and the connecting member is bolted to the suspension rope to drive the barrel body to rise and fall in the sewage; A plurality of pressurizing mechanisms are commonly connected between the sealing ring and the guide mechanism, and the pressurizing mechanism includes a fixing plate fixedly connected to the bottom of the sealing ring, the lower part of the fixing plate passes through the water inlet hole and extends downward, and the lower part of the fixing plate is slidably connected to a driving rod, and the driving rod is connected to the corresponding guide plate. When the limit member descends, the guide plate is driven to retract into a cylindrical shape, and the guide plate drives the pressurizing mechanism to drive the sealing ring to closely abut against the barrel body.

[0008] By adopting the above technical solution, the lifting rope drives the connecting part to descend so that the barrel body dives in the sewage source, and the lower end of the guide plate rotates to the side away from the barrel body due to the resistance of the water. After the multiple guide plates are unfolded, an umbrella-shaped structure is formed to drain the sewage, so that more sewage enters the barrel body through the water inlet hole, thereby improving the exchange efficiency between the barrel body and the external water source. When the barrel body reaches the specified depth and is stationary, the upper flip cover and the sealing ring abut against the barrel body port, and the lowered limit piece causes the guide plate to retract into a cylindrical shape. The guide plate drives the drive rod to move, and the drive rod cooperates with the fixed plate to make the sealing ring abut against the water inlet hole, and the connecting rod drives the upper flip cover to abut against the upper port of the barrel body.

[0009] Furthermore, a plurality of guide plates are vertically fixedly connected to the bottom of the barrel body, and a slide groove matched with the guide plates is provided at the inner circle of the sealing ring.

[0010] By adopting the above technical solution, the outer diameter of the sealing ring is smaller than the inner diameter of the barrel body, and the guide plate and the slide groove cooperate to enable the sealing ring to be vertically raised and lowered in the barrel body. When the barrel body dives into the water, the sealing ring can automatically slide upward due to the resistance of the water, so that the water inlet hole opens, and the external water source enters the barrel body through the water inlet hole.

[0011] Furthermore, the upper port of the barrel body is symmetrically fixedly connected with two D-shaped rings 1, the bottom surface of the upper flip cover is fixedly connected with a D-shaped ring 2, the bottom of the barrel body is fixedly connected with two concentrically arranged O-rings 1, and the bottom surface of the sealing ring is fixedly connected with two concentrically arranged O-rings 2; The cross sections of the D-ring 1 and the O-ring 1 are concave structures, and the cross sections of the D-ring 2 and the O-ring 2 are convex structures.

[0012] By adopting the above technical solution, the sealing area can be increased and the sealing effect can be further improved by the abutment and cooperation between the two protrusions of the D-ring and the inner concave part of the D-ring, and the abutment and cooperation between the two protrusions of the O-ring and the inner concave part of the O-ring.

[0013] Furthermore, the limiting member includes a counterweight ring sleeved on the outside of the fixing ring, the counterweight ring is provided with a plurality of through holes, a clamping block is hinged in the through hole, and a positioning hole is provided on the guide plate corresponding to one side of the clamping block.

[0014] By adopting the above technical solution, when the counterweight ring descends relative to the barrel body, the counterweight ring can cause the guide plate to retract and rotate, and then the blocking block slides along the surface of the guide plate and enters the positioning hole. At this time, the counterweight ring is arranged on the outside of the guide plate, and the rotation of the guide plate is restricted. When descending, the counterweight ring can further drive the guide plate to retract, so that the guide plate drives the driving rod to move, and the driving rod abuts against the inclined hole to improve the abutment tightness between the sealing ring and the water inlet hole.

[0015] Furthermore, the outer diameter of the ring formed by the cooperation of the plurality of guide plates is smaller than the inner diameter of the counterweight ring; A tarpaulin is fixedly sleeved on the outer wall of the fixing ring, and the inner wall of the tarpaulin is bonded and fixed to the outer wall of the guide plate.

[0016] By adopting the above technical solution, when the counterweight ring descends, the bottom surface slides from top to bottom along the outer surface of the guide plate, so that all the guide plates are synchronously retracted, and the guide plates are turned to limit the position. The guide plates simultaneously drive the tarpaulin to move. When multiple guide plates are unfolded in an umbrella shape, the tarpaulin can block the gap between two adjacent guide plates to prevent part of the water flow from escaping through the gap between two adjacent guide plates during the diving of the barrel body. The tarpaulin can enhance the interception effect of the water flow, and further enhance the guiding effect of the water flow.

[0017] Furthermore, the connecting member comprises a mounting ring fixedly sleeved with the upper part of the outer wall of the barrel body, two sliding seats are symmetrically fixedly connected to the outer wall of the mounting ring, a slider is vertically slidably connected in the slider, a pull rod is fixedly connected between the slider and the counterweight ring, and a suspension rod is hinged between the two sliders; An elastic member is commonly connected between the bottom of the sliding block and the sliding seat.

[0018] By adopting the above technical solution, after the boom is connected to the rope, the device can be driven to dive into the water to a specified depth as a whole by releasing the rope. When a water sample of the specified depth is obtained in the barrel, the boom is lowered quickly, and the counterweight ring moves downward relative to the barrel, causing the counterweight ring to limit the rotation of the guide plate, and the elastic member applies a downward pulling force to the slider, increasing the descending speed of the counterweight ring.

[0019] Furthermore, an inclined hole is opened at the lower part of the fixing plate, one end of the driving rod is slidably connected in the inclined hole, the other end of the driving rod is hinged with a hinge seat, the hinge seat is fixedly connected to the corresponding guide plate, the upper end of the hinge seat is fixedly connected to a limiting plate, and the limiting plate is abutted and cooperated with the driving rod.

[0020] By adopting the above technical solution, when the barrel body remains stationary in the water, the sealing ring drops down to abut against the water inlet hole due to the action of gravity, and multiple guide plates are contracted from umbrella shape to cylindrical shape under the action of gravity. The guide plates drive the driving rod to move, and one end of the driving rod slides upward in the inclined hole. When the driving rod abuts against the limit plate, the driving rod cannot rotate. At this time, the driving rod applies downward pressure to the fixed plate, thereby driving the sealing ring to abut against the water inlet hole. The sealing ring drives the upper flip cover to abut against the upper port of the barrel body through the connecting rod, thereby preventing the sealing ring and the upper flip cover from moving, ensuring the sealing of the barrel body and preventing water exchange between the barrel body and the external water source.

[0021] Furthermore, the number of the pressurizing mechanisms is not less than two, and the plurality of pressurizing mechanisms are arranged in a ring shape with equal intervals.

[0022] By adopting the above technical solution, multiple pressurizing mechanisms cooperate synchronously to uniformly apply downward pressure to the sealing ring, further improving the sealing effect when the sealing ring is connected to the water inlet hole.

[0023] Furthermore, the card block is in an L-shaped structure, and a top block is fixedly connected to the lower end of the card block.

[0024] By adopting the above technical solution, when the blocking block enters the positioning hole and drives the barrel body to rise, the blocking block contacts the upper end of the positioning hole, and at the same time the top block can abut against the end of the driving rod close to the guide plate, so that the other end of the driving rod continues to apply downward pressure to the fixed plate, further improving the abutment tightness between the sealing ring and the water inlet hole, and improving the sealing effect of the barrel body.

[0025] Compared with the prior art, the present invention has the following beneficial effects: 1. When the barrel dives, multiple guide plates are unfolded in an umbrella shape to improve the water intake efficiency of the water inlet hole, thereby improving the exchange efficiency between the inside of the barrel and the external water source, ensuring that the barrel accurately obtains water samples at a specified depth. When the connector is quickly released, the counterweight ring descends to limit the guide plate, and the driving rod applies pressure to the fixed plate so that the sealing ring and the upper flip cover can be closely abutted against the barrel body, ensuring the sealing of the barrel body and preventing the barrel body from exchanging water with the external source during ascent, thereby improving the sampling accuracy.

[0026] 2. When the barrel body is driven to rise by the suspension rod, the top block abuts against one end of the driving rod, so that the downward pressure on the fixed plate increases, thereby improving the abutment tightness between the sealing ring and the water inlet hole and the abutment tightness between the upper flip cover and the upper port of the barrel body, further improving the abutment and sealing effect between the barrel body, the upper flip cover and the sealing ring.

[0027] 3. The sealing area can be increased and the sealing effect can be further improved by the abutment and cooperation between the two protrusions of the D-ring and the inner concave part of the D-ring, and the abutment and cooperation between the two protrusions of the O-ring and the inner concave part of the O-ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of disassembling the cylinder and sealing ring structure of the present invention; Figure 3 It is a schematic diagram of the disassembly of the cylinder, upper flip cover and sealing ring structure of the present invention; Figure 4 It is a schematic diagram of the sealing ring, the pressurizing mechanism and the guide plate structure of the present invention; Figure 5 It is a schematic diagram of the structure of the card block and the positioning hole of the present invention; Figure 6 It is a schematic structural diagram of the guide plate of the present invention in an expanded state; Figure 7 It is a schematic diagram of the card block structure of the present invention; Figure 8 It is a schematic diagram of the disassembly of the connecting piece and the counterweight ring structure of the present invention; Fig. 9 It is a schematic diagram of the structure of the pressurizing mechanism of the present invention.

[0029] In the figure: 1. Barrel body; 2. Water inlet hole; 3. Upper cover; 4. D-ring one; 5. D-ring two; 6. Sealing ring; 7. O-ring one; 8. O-ring two; 9. Diversion mechanism; 91. Fixed ring; 92. Diversion plate; 93. Positioning hole; 94. Tarpaulin; 10. Guide plate; 11. Limiting piece; 111. Counterweight ring; 112. Block; 113. Top block; 12. Connecting rod; 13. Pressurizing mechanism; 131. Fixed plate; 132. Oblique hole; 133. Driving rod; 134. Hinge seat; 135. Limiting plate; 14. Connecting piece; 141. Mounting ring; 142. Sliding seat; 143. Sliding block; 144. Pull rod; 145. Suspension rod; 146. Elastic piece. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] Example 1, reference Figure 1-Figure 6 , which is the first embodiment of the present invention, provides a detection sampler for environmental assessment after chemical wastewater treatment, including a barrel body 1, and two upper flip covers 3 are symmetrically hinged on the upper port of the barrel body 1, characterized in that: a plurality of water inlet holes 2 are opened in an annular shape with equal intervals at the bottom of the barrel body 1, a sealing ring 6 is vertically slidably provided at the lower part of the barrel body 1, and a connecting rod 12 is hinged between the sealing ring 6 and the upper flip cover 3, and a guide mechanism 9 is arranged at the outer bottom of the barrel body 1, and the guide mechanism 9 includes a fixed ring 91 fixedly sleeved on the bottom of the outer wall of the barrel body 1, and a plurality of guide plates 92 are hinged on the outer wall of the fixed ring 91 in an annular shape with equal intervals. When the barrel body 1 dives, the guide plates 92 are in contact with water and unfold in an umbrella shape, thereby expanding the water inlet range of the lower side of the barrel body 1, improving the water inlet efficiency of the water inlet hole 2, and improving the water inside the barrel body 1 and the external water The water exchange efficiency of the source; a limit piece 11 is sleeved on the outer side of the fixing ring 91, and the limit piece 11 is used to limit the rotation of the guide plate 92 when it descends, and a connecting piece 14 is fixedly connected to the limit piece 11, and the connecting piece 14 is bolted to the suspension rope to drive the barrel body 1 to rise and fall in the sewage; a plurality of pressurizing mechanisms 13 are commonly connected between the sealing ring 6 and the guide mechanism 9, and the pressurizing mechanism 13 includes a fixing plate 131 fixedly connected to the bottom of the sealing ring 6, the lower part of the fixing plate 131 passes through the water inlet hole 2 and extends downward, and the lower part of the fixing plate 131 is slidably connected to a driving rod 133, and the driving rod 133 is connected to the corresponding guide plate 92, and when the limit piece 11 descends, the guide plate 92 is driven to close to the cylindrical shape, and the guide plate 92 drives the pressurizing mechanism 13 to drive the sealing ring 6 to closely abut against the barrel body 1.

[0032] Specifically, the lifting rope drives the connecting member 14 to descend so that the barrel body 1 dives into the sewage source, and the guide plate 92 is subjected to the resistance of the water and the lower end thereof rotates toward the side away from the barrel body 1, and the multiple guide plates 92 are unfolded to form an umbrella-shaped structure to drain the sewage, so that more sewage enters the barrel body 1 through the water inlet hole 2, thereby improving the exchange efficiency between the barrel body 1 and the external water source; when the barrel body 1 reaches the specified depth and is stationary, the upper flip cover 3 and the sealing ring 6 abut against the port of the barrel body 1, and the lowering limit member 11 causes the guide plate 92 to retract into a cylindrical shape, and the guide plate 92 drives the driving rod 133 to move, and the driving rod 133 cooperates with the fixing plate 131 to make the sealing ring 6 abut against the water inlet hole 2, and the connecting rod 12 drives the upper flip cover 3 to abut against the upper port of the barrel body 1.

[0033] Among them, a water outlet pipe is fixedly provided at the lower part of the outer wall of the barrel body 1, and the water outlet pipe is arranged on the upper side of the fixing ring 91. After the water outlet pipe is blocked by a sealing piece, the barrel body 1 can enter the water to collect water samples. After the barrel body 1 completes water sample collection, the sealing piece is pulled out and the water sample can be discharged through the water outlet pipe.

[0034] In the actual application process, refer to Figure 4 The upper end of the guide plate 92 is hinged to the lower part of the fixing ring 91. When the guide plate 92 is subjected to water resistance, the lower end deflects to the side away from the barrel body 1 until the upper end abuts against the fixing ring 91. At this time, the guide plate 92 cannot rotate and is set at an acute angle with the fixing ring 91, so that multiple guide plates 92 cooperate to form an umbrella-shaped structure to intercept and guide the water flow.

[0035] Reference Figure 2 A plurality of guide plates 10 are vertically fixedly connected to the bottom of the barrel body 1 , and a slide groove adapted to the guide plates 10 is provided at the inner circle of the sealing ring 6 .

[0036] Specifically, the outer diameter of the sealing ring 6 is smaller than the inner diameter of the barrel body 1, and the guide plate 10 cooperates with the slide groove to enable the sealing ring 6 to be vertically raised and lowered in the barrel body 1. When the barrel body 1 dives into the water, the sealing ring 6 can automatically slide upward due to the resistance of the water, so that the water inlet hole 2 is opened, and the external water source enters the barrel body 1 through the water inlet hole 2.

[0037] It can be understood that the sum of the areas of all the water inlet holes 2 is equal to or less than the area of ​​the inner ring of the sealing ring 6, so that when the water entering through the water inlet hole 2 flows into the upper part of the barrel body 1 through the inner ring of the sealing ring 6, it will not be affected by resistance again, so that the water flow remains smooth when entering the barrel body 1 through the water inlet hole 2, ensuring the water exchange efficiency between the inside of the barrel body 1 and the outside world.

[0038] Reference Figure 2 , Figure 4 and Fig. 9An inclined hole 132 is provided at the lower part of the fixing plate 131, one end of the driving rod 133 is slidably connected in the inclined hole 132, and the other end of the driving rod 133 is hinged with a hinge seat 134, and the hinge seat 134 is fixedly connected to the corresponding guide plate 92, and the upper end of the hinge seat 134 is fixedly connected to a limiting plate 135, and the limiting plate 135 is in abutment with the driving rod 133.

[0039] Specifically, when the barrel body 1 remains stationary in the water, the sealing ring 6 is moved down by gravity to abut against the water inlet hole 2, and the multiple guide plates 92 are retracted from an umbrella shape to a cylindrical shape under the action of gravity. The guide plates 92 drive the driving rod 133 to move, and one end of the driving rod 133 slides upward in the inclined hole 132. When the driving rod 133 abuts against the limiting plate 135, the driving rod 133 cannot rotate. At this time, the driving rod 133 applies downward pressure to the fixing plate 131, thereby driving the sealing ring 6 to abut against the water inlet hole 2. The sealing ring 6 drives the upper flip cover 3 to abut against the upper end of the barrel body 1 through the connecting rod 12, thereby preventing the sealing ring 6 and the upper flip cover 3 from moving, ensuring the sealing of the barrel body 1, and preventing the barrel body 1 from exchanging water with an external water source.

[0040] Among them, the limit plate 135 is arranged between the rotation axis of the driving rod 133 and the fixed plate 131. When the barrel body 1 dives in the water, the sealing ring 6 and the guide plate 92 are automatically opened by the resistance in the water, and the driving rod 133 cooperates with the hinge seat 134 and the inclined hole 132 to perform adaptive movement. When the barrel body 1 is stationary and submerged in the water, the sealing ring 6 and the guide plate 92 are reset, and one end of the driving rod 133 rotates when sliding in the inclined hole 132. The driving rod 133 cannot rotate after abutting against the limit plate 135. At this time, when the guide plate 92 is retracted, the driving rod 133 applies downward pressure to the fixed plate 131 to prevent the sealing ring 6 from moving upward in the barrel body 1, and at the same time prevent the upper flip cover 3 from flipping upward.

[0041] Reference Figure 4 The number of the pressurizing mechanisms 13 is not less than two, and the multiple pressurizing mechanisms 13 are arranged in a ring shape with equal intervals.

[0042] Specifically, the plurality of pressurizing mechanisms 13 cooperate synchronously to uniformly apply downward pressure to the sealing ring 6 , thereby further improving the sealing effect when the sealing ring 6 is connected to the water inlet 2 .

[0043] Example 2, reference Figure 5 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the limiting member 11 includes a counterweight ring 111 sleeved on the outside of the fixing ring 91, and the counterweight ring 111 is provided with a plurality of through holes, and a clamping block 112 is hinged in the through hole, and a positioning hole 93 is provided on the guide plate 92 on the side corresponding to the clamping block 112.

[0044] Specifically, when the counterweight ring 111 descends relative to the barrel body 1, the counterweight ring 111 can make the guide plate 92 retract and rotate, and then the block 112 slides along the surface of the guide plate 92 and enters the positioning hole 93. At this time, the counterweight ring 111 is arranged on the outside of the guide plate 92, and the rotation of the guide plate 92 is restricted. When descending, the counterweight ring 111 can further drive the guide plate 92 to retract, so that the guide plate 92 drives the driving rod 133 to move, and the driving rod 133 abuts against the inclined hole 132 to improve the abutment tightness of the sealing ring 6 and the water inlet hole 2.

[0045] It can be understood that the outer diameter of the ring formed by the plurality of guide plates 92 is smaller than the inner diameter of the counterweight ring 111 ; a tarpaulin 94 is fixedly sleeved on the outer wall of the fixed ring 91 , and the inner wall of the tarpaulin 94 is bonded and fixed to the outer wall of the guide plate 92 .

[0046] Specifically, when the counterweight ring 111 descends, the bottom surface slides from top to bottom along the outer surface of the guide plate 92, so that all the guide plates 92 are synchronously retracted, and the guide plates 92 are turned and limited. The guide plates 92 simultaneously drive the tarpaulin 94 to move. When multiple guide plates 92 are unfolded into an umbrella shape, the tarpaulin 94 can block the gap between two adjacent guide plates 92 to prevent part of the water flow from escaping through the gap between two adjacent guide plates 92 during the diving process of the barrel body 1. The tarpaulin 94 improves the interception effect of the water flow and further improves the guiding effect of the water flow.

[0047] Among them, refer to Figure 2 and Figure 6 The water inlet hole 2 is opened at the bottom of the barrel body 1 and is close to the guide plate 92. When the guide plate 92 is unfolded, the water flow guided by the guide plate 92 can quickly enter the barrel body 1 through the water inlet hole 2, shortening the water flow path, thereby reducing energy loss and improving the efficiency of intercepting and guiding the water flow.

[0048] Reference Figure 8 The connecting member 14 includes a mounting ring 141 fixedly sleeved with the upper portion of the outer wall of the barrel body 1, two sliding seats 142 are symmetrically fixedly connected to the outer wall of the mounting ring 141, a slider 143 is vertically slidably connected inside the slider 142, a pull rod 144 is fixedly connected between the slider 143 and the counterweight ring 111, and a suspension rod 145 is hinged between the two sliders 143; an elastic member 146 is commonly connected between the bottom of the slider 143 and the slider 142.

[0049] Specifically, after the suspension rod 145 is connected to the suspension rope, the suspension rope can be released to drive the entire device to dive into the water to a specified depth. After a water sample of a specified depth is obtained in the barrel body 1, the suspension rod 145 is quickly lowered, and the counterweight ring 111 moves downward relative to the barrel body 1, so that the counterweight ring 111 limits the rotation of the guide plate 92, and the elastic member 146 applies a downward pulling force to the slider 143, thereby increasing the descending speed of the counterweight ring 111.

[0050] It can be understood that when the barrel body 1 is stationary in the water and the boom 145 descends rapidly, the barrel body 1 loses the upward pulling force and changes from a stationary state to a falling motion, and the elastic member 146 contracts to apply an upward pulling force to the barrel body 1, and applies a downward pulling force to the counterweight ring 111. Since the gravity of the counterweight ring 111 is less than the gravity of the barrel body 1, the movement amplitude of the counterweight ring 111 is greater than the movement amplitude of the barrel body 1 during the downward sliding of the slider 143 in the slide seat 142, and the counterweight ring 111 moves downward relative to the barrel body 1.

[0051] The elastic member 146 may be any object that can automatically recover after being stretched.

[0052] Reference Figure 5 , Figure 7 and Fig. 9 The block 112 is in an L-shaped structure, and the lower end of the block 112 is fixedly connected to the top block 113 .

[0053] Specifically, when the block 112 enters the positioning hole 93 and drives the barrel body 1 to rise, the block 112 contacts the upper end of the positioning hole 93, and at the same time, the top block 113 can abut against one end of the driving rod 133 close to the guide plate 92, so that the other end of the driving rod 133 continues to apply downward pressure to the fixing plate 131, further improving the abutment tightness between the sealing ring 6 and the water inlet hole 2, thereby improving the sealing effect of the barrel body 1.

[0054] Among them, refer to Figure 5 , Figure 7 A shift block is fixedly arranged at one end of the block 112 away from the top block 113. When the block 112 is manually shifted to rotate away from the barrel body 1, the engagement between the block 112 and the positioning hole 93 can be cancelled. At this time, when the suspension rod 145 is pulled up, the slider 143 abuts against the upper end of the slide seat 142, and the counterweight ring 111 rises to cancel the limit on the guide plate 92, so that the guide plate 92 can rotate freely. The rest of the structure is the same as that of the first embodiment.

[0055] Example 3, reference Figure 3 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: two D-rings 1 4 are symmetrically fixedly connected to the upper port of the barrel body 1, a D-ring 2 5 is fixedly connected to the bottom surface of the upper flip cover 3, two concentrically arranged O-rings 1 7 are fixedly connected to the bottom of the barrel body 1, and two concentrically arranged O-rings 2 8 are fixedly connected to the bottom surface of the sealing ring 6; the cross-sections of the D-ring 1 4 and the O-ring 1 7 are concave structures, and the cross-sections of the D-ring 2 5 and the O-ring 2 8 are convex structures.

[0056] Specifically, the sealing area can be increased and the sealing effect can be further improved by the abutment and cooperation between the protrusion of the D-ring 2 5 and the inner concave portion of the D-ring 1 4, and the abutment and cooperation between the protrusion of the O-ring 2 8 and the inner concave portion of the O-ring 1 7. The rest of the structure is the same as that of the second embodiment.

[0057] Comprehensive embodiment 1-3, the working principle of the present invention is: after the suspension rope is bolted to the suspension rod 145, Figure 1 The device in this state dives to a specified depth in the sewage, and the lower end of the guide plate 92 rotates to the side away from the barrel body 1 due to the resistance of the water. After the multiple guide plates 92 are unfolded, an umbrella-shaped structure is formed to guide the sewage to the water inlet hole 2. The sealing ring 6 slides upward in the barrel body 1 due to the resistance of the water. The water inlet hole 2 is opened and the sewage flows into the barrel body 1. When the barrel body 1 reaches the specified depth, it remains stationary. The sealing ring 6 drops to abut against the water inlet hole 2 due to the action of gravity. The upper flip cover 3 rotates downward to abut against the upper end of the barrel body 1. Under the action of gravity, the multiple guide plates 92 are retracted from an umbrella shape to a cylindrical shape. At this time, a section of the suspension rope is quickly released downward, and the elastic force Component 146 drives the slider 143 to slide toward the lower part of the slide seat 142, the counterweight ring 111 descends to the outside of the guide plate 92, and the block 112 enters the positioning hole 93 at the corresponding position. The counterweight ring 111 can further drive the guide plate 92 to retract when it descends. After the driving rod 133 abuts against the limiting plate 135, it applies downward pressure to the fixing plate 131, so that the sealing ring 6 is closely abutted against the water inlet hole 2. At the same time, the connecting rod 12 drives the upper flip cover 3 to closely abut against the upper end of the barrel body 1, so that the barrel body 1 remains sealed. When the lifting rope drives the lifting rod 145 to rise, it drives the barrel body 1 out of the water, and then the water sample of the barrel body 1 can be taken out for detection.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A detection sampler for environmental assessment after chemical wastewater treatment, comprising a barrel body, wherein the upper port of the barrel body is symmetrically hinged with two upper flip covers, characterized in that: The bottom of the barrel body is provided with a plurality of water inlet holes at equal intervals in an annular shape, a sealing ring is vertically slidably provided at the lower part of the barrel body, a connecting rod is hingedly connected between the sealing ring and the upper flip cover, a flow guide mechanism is provided at the bottom of the barrel body, the flow guide mechanism comprises a fixed ring fixedly sleeved on the bottom of the outer wall of the barrel body, a plurality of flow guide plates are hingedly connected to the outer wall of the fixed ring at equal intervals in an annular shape, and when the barrel body dives, the flow guide plates are in contact with water and unfold in an umbrella shape; A limiting member is sleeved on the outer side of the fixing ring, and when the limiting member descends, the guide plate is rotationally limited, and a connecting member is fixedly connected to the limiting member, and the connecting member is bolted to the suspension rope to drive the barrel body to rise and fall in the sewage; A plurality of pressurizing mechanisms are commonly connected between the sealing ring and the guide mechanism, and the pressurizing mechanism includes a fixing plate fixedly connected to the bottom of the sealing ring, the lower part of the fixing plate passes through the water inlet hole and extends downward, and the lower part of the fixing plate is slidably connected to a driving rod, and the driving rod is connected to the corresponding guide plate. When the limit member descends, the guide plate is driven to retract into a cylindrical shape, and the guide plate drives the pressurizing mechanism to drive the sealing ring to closely abut against the barrel body.

2. The detection sampler for environmental assessment based on chemical wastewater treatment according to claim 1, characterized in that: A plurality of guide plates are vertically fixedly connected to the bottom of the barrel body, and a slide groove matched with the guide plates is provided at the inner circle of the sealing ring.

3. The detection sampler for environmental assessment after chemical wastewater treatment according to claim 1 is characterized in that: The upper port of the barrel body is symmetrically fixedly connected with two D-shaped rings 1, the bottom surface of the upper flip cover is fixedly connected with a D-shaped ring 2, the bottom of the barrel body is fixedly connected with two concentrically arranged O-rings 1, and the bottom surface of the sealing ring is fixedly connected with two concentrically arranged O-rings 2; The cross sections of the D-ring 1 and the O-ring 1 are concave structures, and the cross sections of the D-ring 2 and the O-ring 2 are convex structures.

4. The detection sampler for environmental assessment based on chemical wastewater treatment according to claim 1, characterized in that: The limiting member comprises a weight ring sleeved on the outside of the fixing ring, the weight ring is provided with a plurality of through holes, a clamping block is hinged in the through hole, and a positioning hole is provided on the guide plate corresponding to one side of the clamping block.

5. The detection sampler for environmental assessment based on chemical wastewater treatment according to claim 4, characterized in that: The outer diameter of the ring formed by the cooperation of the plurality of guide plates is smaller than the inner diameter of the counterweight ring; A tarpaulin is fixedly sleeved on the outer wall of the fixing ring, and the inner wall of the tarpaulin is bonded and fixed to the outer wall of the guide plate.

6. The detection sampler for environmental assessment based on chemical wastewater treatment according to claim 4, characterized in that: The connecting member comprises a mounting ring fixedly sleeved with the upper part of the outer wall of the barrel body, two sliding seats are symmetrically fixedly connected to the outer wall of the mounting ring, a slider is vertically slidably connected in the slider, a pull rod is fixedly connected between the slider and the counterweight ring, and a suspension rod is hinged between the two sliders; An elastic member is commonly connected between the bottom of the sliding block and the sliding seat.

7. The detection sampler for environmental assessment based on chemical wastewater treatment according to claim 1, characterized in that: An inclined hole is provided at the lower part of the fixing plate, one end of the driving rod is slidably connected in the inclined hole, the other end of the driving rod is hinged with a hinge seat, the hinge seat is fixedly connected to the corresponding guide plate, the upper end of the hinge seat is fixedly connected to a limiting plate, and the limiting plate is abutted against the driving rod.

8. The detection sampler for environmental assessment based on chemical wastewater treatment according to claim 1, characterized in that: The number of the pressurizing mechanisms is not less than two, and the multiple pressurizing mechanisms are arranged in a ring shape with equal intervals.

9. The detection sampler for environmental assessment based on chemical wastewater treatment according to claim 4, characterized in that: The card block is in an L-shaped structure, and a top block is fixedly connected to the lower end of the card block.

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