A depth-adjustable surface water quality monitoring sampling device

Abstract

The invention relates to the technical field of water quality monitoring, and discloses a depth-adjustable surface water quality monitoring sampling device, comprising an expansion mechanism, wherein the expansion mechanism also comprises a fixed plate, wherein a sliding rail is fixedly connected to the side wall of the fixed plate, before using the device, the fixed plate is fixed at a river bank position, and then the height of the adjustment plate at the outer wall of the sliding gear rod is set, and a buckle is used to control the extension length of the collection telescopic tube, and finally the whole device is put into water. At this time, due to the impact effect of the water flow, when the impact force acts on the inclined surface of the inclined plate, the water flow will push the mounting plate to tilt toward the center of the river, so that the collection mechanism approaches the center of the river, wherein the restricted cross is rotatably connected to the slider, and when the device is in use, an arc change will occur, and after the collection box reaches the designated position, the collection mechanism will be lowered, and the push spring will drive the collection telescopic tube to move down to a predetermined position, thereby completing the collection work of the device on surface water.

Description

Technical Field

[0001] The invention relates to the technical field of water quality detection equipment, in particular to a depth-adjustable surface water quality monitoring sampling device. Background Art

[0002] Water quality monitoring is the process of monitoring and measuring the types of pollutants in water bodies, the concentrations of various pollutants and their changing trends, and evaluating the water quality. The scope of water quality monitoring is very wide, including unpolluted and polluted natural water. Among them, the monitoring of well water quality is mainly carried out through water sampling devices to take a part of the water body for detection and analysis, and then obtain the required water quality monitoring data. Among them, surface water is mostly in the form of lakes, rivers, etc.

[0003] However, due to the limitation of river width, current water quality sampling devices are mostly installed at the river bank. But the flow velocity at the center of the river is not equal to that at the river bank, and the impurities contained in the two are also different. If the river bank water quality data is used instead of the river center water quality data, a large data temperature difference will be generated. To address the above problems, the following solutions are proposed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a depth-adjustable surface water quality monitoring sampling device, comprising an expansion mechanism, the expansion mechanism also comprises a fixed plate, a sliding rail is fixedly connected to the side wall of the fixed plate, a cross is slidably connected to the inner wall of the sliding rail, a slider is rotatably connected to the end of the cross away from the sliding rail, the outer wall of the slider is slidably connected to the support frame, and the inner wall of the support frame is fixedly connected to the mounting plate;

[0005] The collection mechanism includes a collection box fixedly connected to the side wall of the support frame, a fixed square plate fixedly connected to the outer wall of the collection box, a sliding gear rod slidably connected to the inner wall of the fixed square plate, an adjustment plate slidably connected to the outer wall of the sliding gear rod, a pushing spring fixedly connected to the outer wall of the sliding gear rod, a collection telescopic tube connected through the bottom of the collection box, and a plurality of buckles slidably connected to the outer wall of the collection telescopic tube.

[0006] The control mechanism comprises a movable gear rod 1 fixedly connected to the side wall of the slide block, a hydraulic box fixedly connected to the inner wall of the through hole of the collection box, and a gear fixedly connected to the side wall of the hydraulic box.

[0007] Preferably, the expansion mechanism also includes a floating block fixedly connected to the side wall of the mounting plate, an inclined plate fixedly connected to the outer wall of the floating block, a pulling spring fixedly connected to the bottom of the mounting plate, a U-shaped frame fixedly connected to the end of the pulling spring away from the mounting plate, and a pressure plate fixedly connected to the side wall of the U-shaped frame. By utilizing the water flow characteristics of the river itself, an expansion mechanism is arranged inside the device. Before using the device, the fixed plate is fixed to the river bank, and then the height of the adjusting plate on the outer wall of the sliding gear rod is set, and the length of the extended collection telescopic tube is controlled by a buckle. Finally, the entire device is put into the water. At this time, due to the water The impact effect of the flow, wherein, when the impact force acts on the inclined surface of the inclined plate, the water flow will push the mounting plate to tilt toward the center of the river, so that the collecting mechanism moves closer to the center of the river, wherein the restricted cross is rotatably connected to the slider, and the device will undergo an arc change when in use, and after the collecting box reaches the designated position, the collecting mechanism will be lowered, and the pushing spring will drive the collecting telescopic tube to move down to the predetermined position, thereby completing the collection of surface water by the device. Through the application of the above components, the device can still obtain samples at the center of the river at the riverbank position, thereby reducing the data deviation of the later detection samples.

[0008] Preferably, the expansion mechanism also includes a rotating column rotatably connected to the end of the U-shaped frame away from the pressure plate, a reset hydraulic rod is fixedly connected to the side wall of the mounting plate, and a control block is fixedly connected to the end of the reset hydraulic rod away from the mounting plate. An arc groove is opened on the side wall of the control block, and the outer wall of the rotating column is rotatably connected to the inner wall of the arc groove. Utilizing the characteristic that the cross of the above-mentioned component is deformed when in use, a control block and a slider are arranged inside the equipment, wherein the center of the river is the deepest, and the closer to the river bank, the shallower the depth. When the staff puts the equipment into the water, the distance between the sliding rail and the support frame increases, thereby forcing the cross to deform. At this time, the corresponding slider will approach the center position along the inner wall of the support frame, and the slider will contact the pressure plate during the downward movement, presenting a shape like Figure 3 In the state shown in FIG. 1 , the slider forces the U-shaped frame to move synchronously through the pressure plate, and the pressure plate and the rotating column will rotate on the inner wall of the arc groove during the downward movement of the pressure plate and the rotating column, and the downward pressure of the rotating column will be converted into a force for the control block to move horizontally, and the control block will release the restriction on the slider at the other end of the support frame, presenting as shown in FIG. Figure 4 Status shown.

[0009] Preferably, the collecting mechanism also includes a collecting tube slidably connected to the inner wall of the collecting telescopic tube, the bottom of the sliding gear rod is fixedly connected to a pushing slide, the side wall of the pushing slide is slidably connected to the side wall of the collecting tube, the bottom of the collecting tube is fixedly connected to a mounting square ring, the top of the mounting square ring is fixedly connected to a compression spring, and one end of the compression spring away from the mounting square ring is fixedly connected to the bottom of the compression spring.

[0010] Preferably, the collection mechanism also includes a filter screen fixedly connected to the bottom of the mounting square ring, the side walls of the filter screen are rotatably connected with rotating blades, and the inner walls of the rotating blades are fixedly connected with a cleaning net. Utilizing the characteristic that the filter screen moves downward in the water under the thrust, rotating blades and a cleaning net are arranged inside the device. During the downward movement of the filter screen, the rotating blades will be affected by the internal water flow and rotate, and the rotating blades will drive the cleaning net to clean the outer wall of the filter screen, thereby preventing flaky sediments drifting in the river from contacting the side walls of the filter screen, causing blockage of the filter screen and affecting the collection efficiency inside the pressure plate.

[0011] Preferably, the collection mechanism also includes an L-shaped rod fixedly connected to the bottom of the pushing slide, and a rotating baffle is rotatably connected to the inner wall of the installation square ring. The end of the L-shaped rod away from the pushing slide is rotatably connected to the bottom of the rotating baffle. The horizontal plane is not affected by the length of the extraction tube. After the collection telescopic tube is lowered, the horizontal planes inside and outside the tube are equal. The L-shaped rod and the rotating baffle are arranged inside the device. When the sliding gear rod moves downward due to the push spring, the sliding gear rod drives the collection tube to move downward by pushing the slide. In this process, the thrust generated by the compressed spring is greater than the friction force of the extension of the collection telescopic tube. Therefore, the pushing slide will not be displaced along the outer wall of the collection tube during this process. After the collection telescopic tube is fully expanded, the pressure generated by the pushing spring will force the pushing slide to move down along the outer wall of the collection tube. The pushing slide drives the rotating baffle to rotate through the L-shaped rod, so that a small gap is formed between the mounting square ring and the rotating baffle. The external water flow will pass through the gap into the collection tube and the inside of the pushing slide, and finally enter the collection box to complete the sample collection. Through the application of the above components, the equipment can open the rotating baffle at a predetermined position, which can effectively ensure the accuracy of the collected samples.

[0012] Preferably, the control mechanism also includes a piston plate 1 slidably connected to the inner wall of the hydraulic box, the top of the piston plate 1 is fixedly connected to a movable gear rod 2, the side wall of the gear is meshingly connected to the side wall of the movable gear rod 1, and the side wall of the gear is meshingly connected to the side wall of the movable gear rod 2.

[0013] Preferably, the control mechanism also includes an output square tube connected to the side wall of the hydraulic box, a piston plate 2 is slidably connected to the inner wall of the output square tube, and a limiting rod is fixedly connected to the side wall of the piston plate 2. After all the crosses inside the device are extended, the outermost slider will move the moving gear rod 2 upward through the moving gear rod 1 and the gear, such as Figure 7As shown, when the piston plate 1 moves upward, the negative pressure inside the hydraulic box will force the piston plate 2 and the limiting rod to move, so that the limiting rod loses its restriction on the sliding gear rod, and the push spring can drive the sliding gear rod and the collection telescopic tube to move downward. Through the application of the above components, it is effectively avoided that during the opening process of the cross in the river, the outer crosses will not open prematurely because the flow velocity is faster at the center of the river, which will eventually cause the collection telescopic tube to be lowered prematurely, causing the collection telescopic tube to contact the shallower bottom of the riverbed, resulting in the equipment being unable to collect samples at the designated position.

[0014] The present invention has the following beneficial effects:

[0015] (1) The present invention utilizes the water flow characteristics of the river itself and sets an expansion mechanism inside the device. Before using the device, the fixing plate is fixed at the river bank, and then the height of the adjusting plate on the outer wall of the sliding gear rod is set, and the length of the collection telescopic tube is controlled by a buckle. Finally, the whole device is placed in water. At this time, due to the impact effect of the water flow, when the impact force acts on the inclined surface of the inclined plate, the water flow will push the mounting plate to tilt toward the center of the river, so that the collection mechanism approaches the center of the river. The restricted cross and the slider are rotatably connected. When the device is in use, an arc change will occur, and after the collection box reaches the specified position, the collection mechanism will be lowered, and the push spring will drive the collection telescopic tube to move down to the predetermined position, thereby completing the device's collection of surface water. Through the application of the above components, the device can still obtain samples at the center of the river at the river bank, reducing the data deviation of the later detection samples.

[0016] (2) The present invention utilizes the characteristic that the cross of the above-mentioned component will deform when in use, and a control block and a slider are arranged inside the device. The center of the river is the deepest, and the closer to the river bank, the shallower the depth. When the staff puts the device into the water, the distance between the sliding rail and the support frame increases, thus forcing the cross to deform. At this time, the corresponding slider will move closer to the center position along the inner wall of the support frame. During the downward movement, the slider will contact the pressure plate, presenting the following Figure 3 In the state shown in FIG. 1 , the slider forces the U-shaped frame to move synchronously through the pressure plate, and the pressure plate and the rotating column will rotate on the inner wall of the arc groove during the downward movement of the pressure plate and the rotating column, and the downward pressure of the rotating column will be converted into a force for the control block to move horizontally, and the control block will release the restriction on the slider at the other end of the support frame, presenting as shown in FIG. Figure 4 In the state shown, after all the crosses inside the device are extended, the outermost slider will move the moving gear rod 2 upward through the moving gear rod 1 and the gear, as shown in FIG. Figure 7As shown, when the piston plate 1 moves upward, the negative pressure inside the hydraulic box will force the piston plate 2 and the limiting rod to move, so that the limiting rod loses its restriction on the sliding gear rod, and the push spring can drive the sliding gear rod and the collection telescopic tube to move downward. Through the application of the above components, it is effectively avoided that during the opening process of the cross in the river, the outer crosses will not open prematurely because the flow velocity is faster at the center of the river, which will eventually cause the collection telescopic tube to be lowered prematurely, causing the collection telescopic tube to contact the shallower bottom of the riverbed, resulting in the equipment being unable to collect samples at the designated position.

[0017] (3) The present invention utilizes the characteristic that the filter screen moves downward in the water under the thrust, and a rotating fan blade and a cleaning net are arranged inside the device. When the filter screen moves downward, the rotating fan blade will be affected by the internal water flow to produce rotation, and the rotating fan blade will drive the cleaning net to clean the outer wall of the filter screen, so as to prevent the flake sediments floating in the river from contacting the side wall of the filter screen and causing the filter screen to be blocked, thereby affecting the collection efficiency inside the pressure plate.

[0018] (4) The present invention utilizes the characteristics that the horizontal plane is not affected by the length of the extraction tube. After the collection telescopic tube is lowered, the horizontal planes inside and outside the tube are equal. An L-shaped rod and a rotating baffle are arranged inside the device. When the sliding gear rod moves downward due to the push spring, the sliding gear rod drives the collection tube to move downward by pushing the slide plate. In this process, the thrust generated by the compressed spring is greater than the friction force of the extension of the collection telescopic tube. Therefore, the push slide plate will not be displaced along the outer wall of the collection tube in this process. After the collection telescopic tube is fully expanded, the pressure generated by the push spring will force the push slide plate to move downward along the outer wall of the collection tube, and the push slide plate drives the rotating baffle plate to rotate through the L-shaped rod, so that a small gap is formed between the mounting square ring and the rotating baffle plate, and the external water flow will enter the collection tube and the inside of the push slide plate through the gap, and finally enter the collection box to complete the sample collection. Through the application of the above components, the device can open the rotating baffle plate at a predetermined position, which can effectively ensure the accuracy of the collected samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the internal components of the overall structure of the present invention;

[0021] Figure 2 It is a cross-sectional schematic diagram of the expansion mechanism of the present invention;

[0022] Figure 3For the present invention Figure 2 A is an enlarged schematic diagram;

[0023] Figure 4 For the present invention Figure 2 A magnified schematic diagram of B;

[0024] Figure 5 This is a schematic diagram of the internal components of the collection mechanism of the present invention;

[0025] Figure 6 This is a schematic diagram of the bottom component of the collection mechanism of the present invention;

[0026] Figure 7 It is a schematic diagram of the internal components of the control mechanism of the present invention;

[0027] Figure 8 It is a cross-sectional schematic diagram of the control mechanism of the present invention.

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] In the figure: 1. expansion mechanism; 101. fixed plate; 102. sliding rail; 103. cross; 104. slider; 105. support frame; 106. mounting plate; 107. floating block; 108. tilting plate; 109. pulling spring; 110. U-shaped frame; 111. pressure plate; 112. rotating column; 113. reset hydraulic rod; 114. control block; 115. arc groove; 2. collection mechanism; 201. collection box; 202. fixed square plate; 203. sliding gear rod; 204. adjustment plate; 205 , push spring; 206, collection telescopic tube; 207, collection tube; 208, push slide plate; 209, installation square ring; 210, pressure spring; 211, filter net; 212, rotating fan blades; 213, cleaning net; 214, L-shaped rod; 215, rotating baffle; 216, buckle; 3, control mechanism; 301, moving gear rod 1; 302, hydraulic box; 303, gear; 304, piston plate 1; 305, moving gear rod 2; 306, output square tube; 307, piston plate 2; 308, limit rod. DETAILED DESCRIPTION

[0030] 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.

[0031] For example, see Figure 1 - Figure 3The present invention is a depth-adjustable surface water quality monitoring sampling device, comprising an expansion mechanism 1, the expansion mechanism 1 also comprises a fixed plate 101, a sliding rail 102 is fixedly connected to the side wall of the fixed plate 101, a cross 103 is slidably connected to the inner wall of the sliding rail 102, a slider 104 is rotatably connected to the end of the cross 103 away from the sliding rail 102, a support frame 105 is slidably connected to the outer wall of the slider 104, and a mounting plate 106 is fixedly connected to the inner wall of the support frame 105;

[0032] The collecting mechanism 2 includes a collecting box 201 fixedly connected to the side wall of the supporting frame 105, a fixed square plate 202 is fixedly connected to the outer wall of the collecting box 201, a sliding gear rod 203 is slidably connected to the inner wall of the fixed square plate 202, an adjusting plate 204 is slidably connected to the outer wall of the sliding gear rod 203, a pushing spring 205 is fixedly connected to the outer wall of the sliding gear rod 203, a collecting telescopic tube 206 is through-connected to the bottom of the collecting box 201, and a plurality of buckles 216 are slidably connected to the outer wall of the collecting telescopic tube 206.

[0033] The control mechanism 3 includes a movable gear rod 301 fixedly connected to the side wall of the slider 104 , a hydraulic box 302 fixedly connected to the inner wall of the through hole of the collection box 201 , and a gear 303 fixedly connected to the side wall of the hydraulic box 302 .

[0034] The expansion mechanism 1 also includes a floating block 107 fixedly connected to the side wall of the mounting plate 106, an inclined plate 108 fixedly connected to the outer wall of the floating block 107, a pulling spring 109 fixedly connected to the bottom of the mounting plate 106, a U-shaped frame 110 fixedly connected to the end of the pulling spring 109 away from the mounting plate 106, and a pressure plate 111 fixedly connected to the side wall of the U-shaped frame 110. The expansion mechanism 1 is arranged inside the device by utilizing the water flow characteristics of the river itself. Before using the device, the fixing plate 101 is fixed to the river bank position, and then the adjusting plate 204 is arranged at the height of the outer wall of the sliding gear rod 203, and the buckle 216 is provided to control the extension length of the collection telescopic tube 206, and finally the entire device is The device is put into water. At this time, due to the impact effect of the water flow, when the impact force acts on the inclined surface of the inclined plate 108, the water flow will push the mounting plate 106 to tilt toward the center of the river, so that the collecting mechanism 2 is close to the center of the river. The restricted cross 103 and the slider 104 are rotatably connected. When the device is in use, an arc change will occur. After the collecting box 201 reaches the specified position, the collecting mechanism 2 will be lowered, and the pushing spring 205 will drive the collecting telescopic tube 206 to move down to the predetermined position, thereby completing the collection of surface water by the device. Through the application of the above components, the device can still obtain samples at the center of the river at the river bank, reducing the data deviation of the later detection samples.

[0035] The expansion mechanism 1 also includes a rotating column 112 rotatably connected to the end of the U-shaped frame 110 away from the pressure plate 111, a reset hydraulic rod 113 is fixedly connected to the side wall of the mounting plate 106, and a control block 114 is fixedly connected to the end of the reset hydraulic rod 113 away from the mounting plate 106. An arc groove 115 is opened on the side wall of the control block 114, and the outer wall of the rotating column 112 is rotatably connected to the inner wall of the arc groove 115. The cross 103 of the above-mentioned component is deformed when in use, and a control block 114 and a slider 104 are arranged inside the device. The center of the river is the deepest, and the closer to the river bank, the shallower the depth. When the staff puts the equipment into the water, the distance between the sliding rail 102 and the support frame 105 increases, thereby forcing the cross 103 to deform. At this time, the corresponding slider 104 will move closer to the center position along the inner wall of the support frame 105. During the downward movement, the slider 104 will contact the pressure plate 111, presenting a Figure 3 In the state shown, the slider 104 forces the U-shaped frame 110 to move synchronously through the pressure plate 111, and the pressure plate 111 and the rotating column 112 will rotate on the inner wall of the arc groove 115 during the downward movement, and the downward pressure of the rotating column 112 will be converted into a force for the control block 114 to move horizontally, and the control block 114 will release the restriction on the slider 104 at the other end of the support frame 105, presenting as shown in FIG. Figure 4 Status shown.

[0036] For example 2, please refer to Figure 4 - Figure 8 The present invention is a depth-adjustable surface water quality monitoring sampling device. On the basis of the first embodiment, the collection mechanism 2 also includes a collection tube 207 slidably connected to the inner wall of the collection telescopic tube 206, and the bottom of the sliding gear rod 203 is fixedly connected with a pushing slide 208, and the side wall of the pushing slide 208 is slidably connected to the side wall of the collection tube 207. The bottom of the collection tube 207 is fixedly connected with a mounting square ring 209, and the top of the mounting square ring 209 is fixedly connected with a compression spring 210, and one end of the compression spring 210 away from the mounting square ring 209 is fixedly connected to the bottom of the compression spring 210.

[0037] The collecting mechanism 2 also includes a filter screen 211 fixedly connected to the bottom of the mounting square ring 209, and a rotating fan blade 212 is rotatably connected to the side wall of the filter screen 211, and a cleaning net 213 is fixedly connected to the inner wall of the rotating fan blade 212. Utilizing the characteristic that the filter screen 211 moves downward in the water under the thrust, a rotating fan blade 212 and a cleaning net 213 are arranged inside the device. In the process of the filter screen 211 moving downward, the rotating fan blade 212 will be affected by the internal water flow and rotate, and the rotating fan blade 212 will drive the cleaning net 213 to clean the outer wall of the filter screen 211, so as to prevent the flake sediments drifting in the river from contacting the side wall of the filter screen 211, causing the filter screen 211 to be blocked, thereby affecting the collecting efficiency inside the pressure plate 111.

[0038] The collection mechanism 2 also includes an L-shaped rod 214 fixedly connected to the bottom of the pushing slide 208, and a rotating baffle 215 is rotatably connected to the inner wall of the installation square ring 209. The end of the L-shaped rod 214 away from the pushing slide 208 is rotatably connected to the bottom of the rotating baffle 215. By utilizing the fact that the horizontal plane is not affected by the length of the extraction tube, after the collection telescopic tube 206 is lowered, the horizontal planes inside and outside the tube are equal, and an L-shaped rod 214 and a rotating baffle 215 are arranged inside the device. When the sliding gear rod 203 moves downward due to the push spring 205, the sliding gear rod 203 drives the collection tube 207 to move downward by pushing the slide 208. In this process, the thrust generated by the compressed spring 210 is greater than the friction force of the extension of the collection telescopic tube 206. Therefore, during this process, the pushing slide 208 will not be displaced along the outer wall of the collection tube 207. After the collection telescopic tube 206 is fully unfolded, the pressure generated by the pushing spring 205 will force the pushing slide 208 to move down along the outer wall of the collection tube 207, and the pushing slide 208 drives the rotating baffle 215 to rotate through the L-shaped rod 214, so that a small gap is formed between the mounting square ring 209 and the rotating baffle 215, and the external water flow will enter the collection tube 207 and the pushing slide 208 through the gap, and finally enter the collection box 201 to complete the sample collection. Through the application of the above components, the equipment can open the rotating baffle 215 at a predetermined position, which can effectively ensure the accuracy of the collected samples.

[0039] The control mechanism 3 also includes a piston plate 1 304 slidably connected to the inner wall of the hydraulic box 302, and the top of the piston plate 1 304 is fixedly connected to a movable gear rod 2 305, the side wall of the gear 303 is meshingly connected with the side wall of the movable gear rod 1 301, and the side wall of the gear 303 is meshingly connected with the side wall of the movable gear rod 2 305.

[0040] The control mechanism 3 also includes an output square tube 306 connected to the side wall of the hydraulic box 302, a piston plate 2 307 is slidably connected to the inner wall of the output square tube 306, and a limiting rod 308 is fixedly connected to the side wall of the piston plate 2 307. After all the crosses 103 inside the device are extended, the outermost slider 104 will drive the moving gear rod 2 305 to move up through the moving gear rod 1 301 and the gear 303, as shown in FIG. Figure 7 As shown, when the piston plate 1 304 moves upward, the negative pressure inside the hydraulic box 302 will force the piston plate 2 307 and the limiting rod 308 to move, so that the limiting rod 308 loses the restriction on the sliding gear rod 203, and the push spring 205 can drive the sliding gear rod 203 and the collection telescopic tube 206 to move downward. Through the application of the above components, it is effectively avoided that during the opening of the river, the cross 103 on the periphery is prevented from opening prematurely because the flow velocity is faster at the center of the river, which eventually causes the collection telescopic tube 206 to be lowered prematurely, causing the collection telescopic tube 206 to contact the shallower bottom of the riverbed, resulting in the device being unable to collect samples at the designated position.

[0041] A specific application of this embodiment is: before using the device, fix the fixing plate 101 at the river bank, then set the adjustment plate 204 at the height of the outer wall of the sliding gear rod 203, and have a buckle 216 to control the extension length of the collection telescopic tube 206, and finally put the entire device into the water. At this time, due to the impact effect of the water flow, when the impact force acts on the inclined surface of the inclined plate 108, the water flow will push the mounting plate 106 to tilt toward the center of the river, so that the collection mechanism 2 is close to the center of the river, wherein the restricted cross 103 and the slider 104 are rotatably connected. When the device is in use, an arc change will occur, and after the collection box 201 reaches the specified position, the collection mechanism 2 is lowered, and the push spring 205 will drive the collection telescopic tube 206 to move down to the predetermined position, thereby completing the equipment's collection of surface water.

[0042] Taking advantage of the fact that the cross 103 of the above-mentioned component is deformed when in use, a control block 114 and a slider 104 are provided inside the device. The center of the river is the deepest, and the closer to the river bank, the shallower the depth. When the staff puts the device into the water, the distance between the sliding rail 102 and the support frame 105 increases, thereby forcing the cross 103 to deform. At this time, the corresponding slider 104 will move toward the center along the inner wall of the support frame 105. During the downward movement, the slider 104 will contact the pressure plate 111, presenting the following Figure 3In the state shown, the slider 104 forces the U-shaped frame 110 to move synchronously through the pressure plate 111, and the pressure plate 111 and the rotating column 112 will rotate on the inner wall of the arc groove 115 during the downward movement, and the downward pressure of the rotating column 112 will be converted into a force for the control block 114 to move horizontally, and the control block 114 will release the restriction on the slider 104 at the other end of the support frame 105, presenting as shown in FIG. Figure 4 In the state shown, after all the crosses 103 inside the device are extended, the outermost slider 104 will drive the moving gear rod 2 305 to move upward through the moving gear rod 1 301 and the gear 303, as shown in FIG. Figure 7 As shown, when the piston plate 1 304 moves upward, the negative pressure inside the hydraulic box 302 will force the piston plate 2 307 and the limiting rod 308 to move, so that the limiting rod 308 loses the restriction on the sliding gear rod 203, and the push spring 205 can drive the sliding gear rod 203 and the collection telescopic tube 206 to move downward. Through the application of the above components, it is effectively avoided that during the opening of the river, the cross 103 on the periphery is prevented from opening prematurely because the flow velocity is faster at the center of the river, which eventually causes the collection telescopic tube 206 to be lowered prematurely, causing the collection telescopic tube 206 to contact the shallower bottom of the riverbed, resulting in the device being unable to collect samples at the designated position.

[0043] Taking advantage of the fact that the filter screen 211 moves downward in the water under the thrust, a rotating fan blade 212 and a cleaning net 213 are provided inside the device. In the process of the filter screen 211 moving downward, the rotating fan blade 212 will be affected by the internal water flow to rotate, and the rotating fan blade 212 will drive the cleaning net 213 to clean the outer wall of the filter screen 211 to prevent the flake sediments drifting in the river from contacting the side wall of the filter screen 211 and causing the filter screen 211 to be blocked, thereby affecting the collection efficiency inside the pressure plate 111. Taking advantage of the fact that the horizontal plane is not affected by the length of the extraction tube, after the collection telescopic tube 206 is lowered, the horizontal planes inside and outside the tube are equal, and an L-shaped rod 214 and a rotating baffle 215 are provided inside the device. In the process of the sliding gear rod 203 moving downward due to the push spring 205, the sliding gear rod 203 drives the collection by pushing the slide plate 208. The tube 207 moves downward. During this process, the thrust generated by the compressed spring 210 is greater than the friction force of the extension of the collection telescopic tube 206. Therefore, the pushing slide 208 will not be displaced along the outer wall of the collection tube 207 during this process. After the collection telescopic tube 206 is fully expanded, the pressure generated by the pushing spring 205 will force the pushing slide 208 to move downward along the outer wall of the collection tube 207. The pushing slide 208 drives the rotating baffle 215 to rotate through the L-shaped rod 214, so that a small gap is formed between the mounting square ring 209 and the rotating baffle 215, and the external water flow will enter the collection tube 207 and the pushing slide 208 through the gap, and finally enter the collection box 201 to complete the sample collection. Through the application of the above components, the equipment can open the rotating baffle 215 at a predetermined position, which can effectively ensure the accuracy of the collected samples.

[0044] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A depth-adjustable surface water quality monitoring sampling device, comprising an expansion mechanism (1), the expansion mechanism (1) further comprising a fixed plate (101), a sliding rail (102) being fixedly connected to the side wall of the fixed plate (101), a cross (103) being slidably connected to the inner wall of the sliding rail (102), a slider (104) being rotatably connected to one end of the cross (103) away from the sliding rail (102), a support frame (105) being slidably connected to the outer wall of the slider (104), a mounting plate (106) being fixedly connected to the inner wall of the support frame (105), characterized in that: Also includes: A collection mechanism (2), the collection mechanism (2) comprising a collection box (201) fixedly connected to a side wall of a support frame (105), a fixed square plate (202) fixedly connected to an outer wall of the collection box (201), a sliding gear rod (203) slidably connected to an inner wall of the fixed square plate (202), an adjustment plate (204) slidably connected to an outer wall of the sliding gear rod (203), a push spring (205) fixedly connected to an outer wall of the sliding gear rod (203), a collection telescopic tube (206) penetratingly connected to the bottom of the collection box (201), and a plurality of buckles (216) slidably connected to the outer wall of the collection telescopic tube (206); A control mechanism (3), the control mechanism (3) comprising a movable gear rod (301) fixedly connected to the side wall of the slider (104), a hydraulic box (302) fixedly connected to the inner wall of the through hole of the collection box (201), and a gear (303) fixedly connected to the side wall of the hydraulic box (302); The expansion mechanism (1) further comprises a floating block (107) fixedly connected to the side wall of the mounting plate (106); an inclined plate (108) is fixedly connected to the outer wall of the floating block (107); a pulling spring (109) is fixedly connected to the bottom of the mounting plate (106); an end of the pulling spring (109) away from the mounting plate (106) is fixedly connected to a U-shaped frame (110); and a pressure plate (111) is fixedly connected to the side wall of the U-shaped frame (110); The expansion mechanism (1) further comprises a rotating column (112) rotatably connected to an end of the U-shaped frame (110) away from the pressure plate (111); a reset hydraulic rod (113) is fixedly connected to a side wall of the mounting plate (106); an end of the reset hydraulic rod (113) away from the mounting plate (106) is fixedly connected to a control block (114); an arc-shaped groove (115) is formed on the side wall of the control block (114); and an outer wall of the rotating column (112) is rotatably connected to an inner wall of the arc-shaped groove (115); The rotating column (112) will rotate on the inner wall of the arc groove (115), and the downward pressure of the rotating column (112) will be converted into a force for the control block (114) to move laterally, and the control block (114) will release the restriction on the slider (104) at the other end of the support frame (105).

2. A depth-adjustable surface water quality monitoring sampling device according to claim 1, characterized in that: The collection mechanism (2) further comprises a collection tube (207) slidably connected to the inner wall of the collection telescopic tube (206); a pushing slide plate (208) is fixedly connected to the bottom of the sliding gear rod (203); a side wall of the pushing slide plate (208) is slidably connected to the side wall of the collection tube (207); a mounting square ring (209) is fixedly connected to the bottom of the collection tube (207); a compression spring (210) is fixedly connected to the top of the mounting square ring (209); and an end of the compression spring (210) away from the mounting square ring (209) is fixedly connected to the bottom of the compression spring (210).

3. A depth-adjustable surface water quality monitoring sampling device according to claim 2, characterized in that: The collecting mechanism (2) further comprises a filter screen (211) fixedly connected to the bottom of the mounting square ring (209), a rotating fan blade (212) being rotatably connected to the side wall of the filter screen (211), and a cleaning screen (213) being fixedly connected to the inner wall of the rotating fan blade (212).

4. The depth-adjustable surface water quality monitoring sampling device according to claim 3 is characterized by: The collecting mechanism (2) further comprises an L-shaped rod (214) fixedly connected to the bottom of the pushing slide plate (208); a rotating baffle plate (215) is rotatably connected to the inner wall of the mounting square ring (209); and one end of the L-shaped rod (214) away from the pushing slide plate (208) is rotatably connected to the bottom of the rotating baffle plate (215).

5. The depth-adjustable surface water quality monitoring sampling device according to claim 4 is characterized in that: The control mechanism (3) further comprises a piston plate 1 (304) slidably connected to the inner wall of the hydraulic box (302); a movable gear rod 2 (305) is fixedly connected to the top of the piston plate 1 (304); a side wall of the gear (303) is meshingly connected to a side wall of the movable gear rod 1 (301); and a side wall of the gear (303) is meshingly connected to a side wall of the movable gear rod 2 (305).

6. A depth-adjustable surface water quality monitoring sampling device according to claim 5, characterized in that: The control mechanism (3) further comprises an output square tube (306) which is connected through the side wall of the hydraulic box (302); a second piston plate (307) is slidably connected to the inner wall of the output square tube (306); and a limiting rod (308) is fixedly connected to the side wall of the second piston plate (307).

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