Sewage sampling device with fixed-point collection function

Abstract

The invention discloses a sewage sampling device with a fixed-point collection function, the sewage sampling device comprises a bottom frame, a lifting mechanism, a first motor, a coupling, a telescopic mechanism, a turning wheel carrier, a winch and a sampling mechanism, the lifting mechanism, the first motor, the telescopic mechanism and the winch are fixedly connected with the bottom frame; the coupler is in transmission connection with the output end of the first motor and the telescopic mechanism, the turning wheel carrier is fixedly connected with the telescopic mechanism, the sampling mechanism is fixedly connected with the winch, and the sampling mechanism is in sliding connection with the turning wheel carrier; the invention relates to the technical field of sewage sampling equipment, can sample sewage in the middle of a riverway beside a river, reduces the risk that sampling personnel fall into water in a slipping manner, can dive to different water depths in a directional manner, completes stratified sampling and storage of sewage in different water layers, and improves the accuracy of sampling specimens.

Description

Technical Field

[0001] The invention relates to the technical field of sewage sampling equipment, in particular to a sewage sampling device with a fixed-point sampling function. Background Art

[0002] River sewage pollution is a serious environmental problem that directly threatens the health of aquatic ecosystems and the sustainable development of human society. Since industrial wastewater, domestic sewage, fertilizers, pesticides and other agricultural wastewater are directly discharged into rivers, toxic and harmful substances will destroy the living environment of aquatic organisms. In severe cases, it will lead to the death of aquatic organisms, affect the balance and stability of the aquatic ecosystem, and cause harm to human health.

[0003] Therefore, it is necessary to treat river sewage. Before treating sewage, it is necessary to sample river sewage to determine the specific situation of river pollution and the specific composition of sewage, and formulate a treatment plan accordingly. In the existing river sewage sampling, most of the samples are taken at the middle point of the river by extending the rod. This sampling method does not take into account that the impurities in the sewage will be stratified in the river. The impurity composition between river water bodies in different stratifications will be different due to precipitation. If samples cannot be taken and compared for different water layers, there will be deviations in sewage sampling, which will affect the sewage treatment plan. Summary of the Invention

[0004] The purpose of the present invention is to provide a sewage sampling device with a fixed-point collection function to solve the problems in the prior art.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A sewage sampling device with a fixed-point collection function includes a base frame, a lifting mechanism, a first motor, a coupling, a telescopic mechanism, a changing wheel frame, a winch and a sampling mechanism. The lifting mechanism, the first motor, the telescopic mechanism and the winch are all fixedly connected to the base frame, the coupling is transmission-connected to the output end of the first motor and the telescopic mechanism, the changing wheel frame is fixedly connected to the telescopic mechanism, the sampling mechanism is fixedly connected to the winch, and the sampling mechanism is slidingly connected to the changing wheel frame.

[0006] This collection device is used for fixed-point sampling of river sewage. The device is placed on the side of the river, and the base frame is lifted by the lifting mechanism. The output torque of the first motor passes through the coupling, and the coupling transmits the torque to the telescopic mechanism. The telescopic mechanism extends the reversing wheel frame to the top of the collection point in the river. The winch unwinds at the same time to lower the sampling mechanism. The sampling mechanism floats on the surface of the river. Through the rotation mode set by its internal motor, the sampling mechanism can dive to different water depths in a direction to complete the stratified sampling and preservation of sewage in different water layers. After the sampling mechanism completes the preservation, the winch reels in and lifts the sampling mechanism for recovery.

[0007] Furthermore, the lifting mechanism includes a base, a slide rail, a slide rod, a side frame, a second motor, a first worm gear and a torque transmission mechanism. The base is fixedly connected to the slide rail and the torque transmission mechanism, the slide rod is fixedly connected to the base frame, the slide rod is slidably connected to the slide rail, the side frame is fixedly connected to the base and the second motor, the torque transmission mechanism is transmission-connected to the output end of the second motor and the first worm gear, and the first worm gear is rotationally connected to the base frame.

[0008] The base is inserted into the ground and fixed, and the second motor outputs torque to the torque transmission mechanism, which converts the torque to cause the first worm to rotate helically. The first worm rotates helically upward to push the base frame, and the slide rod slides along the slide rail, and the first worm lifts the base frame.

[0009] Furthermore, the torque transmission mechanism includes a grip, a rotating drum and a tooth head rod. The grip is fixedly connected to the base, the tooth head rod is transmission-connected to the output end of the second motor, the grip is provided with a first through hole and a first inner ring groove, the first through hole is rotationally connected to the tooth head rod, the rotating drum is slidingly connected to the first inner ring groove, an outer tooth ring groove and a first inner thread are provided on the rotating drum, the outer tooth ring groove is engaged with the tooth surface of the tooth head rod, and the first inner thread is threadedly connected to the first worm.

[0010] The output torque of the second motor drives the tooth head rod to rotate in the first through hole, and the tooth head rod engages with the tooth surface of the outer ring groove, thereby converting the torque of the tooth head rod, causing the rotating drum to rotate in the first inner ring groove around the axis of the first worm. The first internal thread provided on the rotating drum is threadedly connected to the first worm, thereby converting the rotation of the rotating drum into the upward spiral rotation of the first worm along its axis.

[0011] Furthermore, the telescopic mechanism includes a second worm, an outer cylinder, a first inner cylinder, a first sleeve, a second inner cylinder, a second sleeve and a top cylinder. The outer cylinder is fixedly connected to the base frame, a second through hole is provided on the outer cylinder, the second worm is rotatably connected to the second through hole, the second worm is transmission-connected to the coupling, a second inner cylinder is provided with a second internal thread, the second internal thread is threadedly connected to the second worm, the first inner cylinder is slidingly connected to the outer cylinder and the second inner cylinder, the first sleeve is slidingly connected to the second worm, the first sleeve is provided with a first external thread, the second inner cylinder is provided with a third internal thread, the first external thread is threadedly connected to the third internal thread, the second sleeve is slidingly connected to the first external thread, the second sleeve is provided with a second external thread, the top cylinder is provided with a fourth internal thread, the second external thread is threadedly connected to the fourth internal thread, the top cylinder is slidingly connected to the second external thread, and the top cylinder is fixedly connected to the changing wheel frame.

[0012] The output torque of the first motor is transmitted to the second worm through the coupling, and the second worm rotates in the second through hole. The threaded connection between the second worm and the second internal thread causes the first inner cylinder to slide along the axis of the outer cylinder. The rotation of the second worm drives it to rotate through the protrusion provided on the first sleeve, and the threaded connection between the first external thread and the third internal thread causes the second inner cylinder to slide along the axis of the first inner cylinder. The first external thread drives it to rotate through the protrusion provided on the second sleeve, and the threaded connection between the second external thread and the fourth internal thread converts the rotation of the second sleeve into the sliding of the push cylinder along its axis, and the push cylinder pushes out the changing wheel frame to extend to the center of the river channel.

[0013] Furthermore, the sampling mechanism includes a steel cable, a diving mechanism, a third motor, a main cylinder shell, a liquid collection mechanism and a bottom basket. The steel cable is fixedly connected to the winch and the diving mechanism, the steel cable is slidably connected to the changing wheel frame, the diving mechanism is fixedly connected to the third motor, the output end of the third motor is fixedly connected to the diving mechanism and the liquid collection mechanism, the main cylinder shell is fixedly connected to the diving mechanism, the liquid collection mechanism and the bottom basket, and the liquid collection mechanism is slidably connected to the bottom basket.

[0014] The steel cable extends to the center of the river channel along the changing wheel frame, and the steel cable is unwound through the winch to make the bottom basket contact the water surface of the river channel. The third motor outputs the torque according to the pre-set setting. When the third motor outputs the specified clockwise torque, the diving mechanism absorbs water to increase the weight of the sampling mechanism and discharges the internal pre-stored gas. The sampling mechanism begins to dive as a whole. When it dives to the specified depth, the third motor outputs the specified counterclockwise torque. The liquid sampling mechanism samples the sewage of the water layer at that depth and stores it in the bottom basket. This sampling mechanism can dive to water layers of different depths for multiple samplings in batches. After completing multiple sampling tasks, the winch reels the steel cable and lifts the sampling mechanism out of the water layer for recovery.

[0015] Furthermore, the diving mechanism includes an outer ring, an inner ring tube, a one-way mechanism, a connecting rod, a one-way valve and an air chamber. The outer ring is slidably connected to the main tube shell, the outer ring is provided with a convex column, the inner ring tube is provided with a reciprocating groove and a second inner ring groove, the convex column is slidably connected to the reciprocating groove, the second inner ring groove is slidably connected to the one-way mechanism, the connecting rod is fixedly connected to the outer ring and the one-way valve, the air chamber is fixedly connected to the third motor and the one-way valve, and the output end of the third motor is fixedly connected to the one-way mechanism.

[0016] The third motor outputs counterclockwise torque according to the pre-setting. When the direction of the torque transmitted by the output end of the third motor is the specified clockwise, the one-way mechanism transmits the torque to the inner ring tube. Through the sliding connection between the reciprocating groove provided on the inner ring tube and the convex column on the outer ring, the rotation of the inner ring tube is converted into the reciprocating displacement of the outer ring along the axis of the main tube shell. The reciprocating displacement of the outer ring pushes open the one-way valve. When the one-way valve is opened reciprocatingly, river water enters the air chamber in batches, and the air in the air chamber is discharged. The weight of the diving mechanism gradually increases with the number of times river water enters. When it descends to the specified depth, the third motor stops outputting torque.

[0017] Furthermore, the one-way mechanism includes a bevel gear, a first wedge block, a first spring and a first slide. The bevel gear is fixedly connected to the output end of the third motor, the first slide is fixedly connected to the second inner ring groove, the first wedge block, the first spring and the first slide are each provided with several groups, and the several groups of first wedge blocks are evenly distributed along the circumference of the second inner ring groove. The first wedge block contacts the bevel gear, the first wedge block is slidably connected to the second inner ring groove and the first slide, and the first spring is fixedly connected to the outer ring and the first wedge block.

[0018] The third motor outputs a clockwise torque according to the preset setting, and the output end of the third motor drives the helical gear to rotate. The vertical tooth surface of the helical gear contacts the straight surface of the first wedge block. The helical gear presses against the first slide through the first wedge block to drive the inner ring cylinder to rotate. When the third motor outputs a counterclockwise torque according to the preset setting, the helical tooth surface of the helical gear contacts the inclined surface of the straight surface of the first wedge block. As the helical gear rotates, the first wedge block is pushed to move along the first slide, and the first wedge block compresses the first spring to complete the reciprocating motion.

[0019] Furthermore, the liquid taking mechanism includes a slide plate, a second spring, a second wedge block, a turntable, a slide cylinder, an assembly frame and a liquid collecting cylinder. The slide plate is fixedly connected to the output end of the third motor. The second spring and the second wedge block are each provided with several groups, and the several groups of second wedge blocks are evenly distributed along the circumference of the slide plate. The second spring is fixedly connected to the slide plate and the second wedge block. The turntable is provided with an inner ring tooth groove and a third external thread. The second wedge block contacts the inner ring tooth groove. The slide cylinder is provided with a fifth internal thread. The third external thread and the fifth internal thread are threadedly connected. The assembly frame is fixedly connected to the main cylinder shell. The slide cylinder is slidably connected to the assembly frame. The slide cylinder is fixedly connected to the liquid collecting cylinder. The liquid collecting cylinder is slidably connected to the main cylinder shell and the bottom basket. A partition and a third through hole are provided on the liquid collecting cylinder. The partition plate and the third through hole are each provided with several groups. Several groups of partition plates are linearly evenly distributed along the axis of the liquid collecting cylinder, and several groups of third through holes are evenly distributed along the circumference of the side wall of the liquid collecting cylinder.

[0020] The wedge surfaces of the second wedge block face opposite to those of the first wedge block. When the third motor outputs a clockwise torque, the inclined surface of the second wedge block contacts the inclined tooth surface of the inner ring tooth groove, and the inner ring tooth groove pushes the second wedge block to compress the second spring displacement in the slide plate. When the sampling mechanism descends to the specified water depth, the third motor outputs a counterclockwise torque to the slide plate according to the pre-setting. The slide plate rotates to make the second wedge block directly contact the vertical tooth surface of the inner ring tooth groove, and the turntable is driven to rotate by the second wedge block. Through the threaded connection between the third external thread provided on the turntable and the fifth internal thread on the slide cylinder, the rotation of the turntable is converted into a reciprocating sliding of the slide cylinder along the axis of the assembly frame. The slide cylinder pushes the liquid collecting cylinder to slide along the main cylinder shell and the bottom basket. When the liquid collecting cylinder slides to the third through hole between the main cylinder shell and the bottom basket, the river water enters the different liquid chambers separated by the partition through the third through hole. As the third through hole is blocked by the bottom basket, the sampling and preservation of this water layer is completed.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention designs a diving mechanism, and when the torque transmitted by the output end of the third motor is in the prescribed clockwise direction, the output end of the third motor drives the helical gear to rotate, and the vertical tooth surface of the helical gear contacts the straight surface of the first wedge block, and the helical gear drives the inner ring cylinder to rotate, and the sliding connection between the reciprocating groove provided on the inner ring cylinder and the convex column on the outer ring is made, so that the rotation of the inner ring cylinder is converted into the reciprocating displacement of the outer ring along the axis of the main cylinder shell, and the one-way valve is pushed open by the reciprocating displacement of the outer ring. When the one-way valve is opened reciprocally, river water enters the air chamber in batches, and the air in the air chamber is discharged. The diving mechanism starts to dive as the weight gradually increases with the number of times river water enters. The present invention controls the overall sampling mechanism to descend to a specified depth by controlling the water intake and exhaust volume; the present invention designs a liquid taking mechanism, and the third motor outputs counterclockwise torque to a predetermined depth according to the preset output. The slide plate rotates so that the second wedge block directly contacts the vertical tooth surface of the inner ring tooth groove, driving the turntable to rotate. Through the threaded connection between the third external thread provided on the turntable and the fifth internal thread on the slide cylinder, the rotation of the turntable is converted into the reciprocating sliding of the slide cylinder along the axis of the assembly frame. The slide cylinder pushes the liquid collecting cylinder to slide along the main cylinder shell and the bottom basket. When the liquid collecting cylinder slides to the third through hole between the main cylinder shell and the bottom basket, the river water enters the different liquid chambers separated by the partition through the third through hole. As the third through hole is blocked by the bottom basket, the sampling and preservation of the water layer is completed. The present invention can isolate and preserve sewage in different water layers; the present invention can sample sewage in the middle part of the river channel at the riverside, reducing the risk of sampling personnel falling into the water. The present invention can dive to different water depths in a direction to complete the stratified sampling and preservation of sewage in different water layers, thereby improving the accuracy of the sampled specimens. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the torque transmission mechanism of the present invention; Figure 3 It is a schematic structural diagram of the telescopic mechanism of the present invention; Figure 4 It is a partial cross-sectional view of the sampling mechanism of the present invention; Figure 5 for Figure 4 A local enlarged schematic diagram of area A; Figure 6 It is a schematic structural diagram of the liquid taking mechanism of the present invention; Figure 7 It is a schematic structural diagram of the one-way mechanism of the present invention; Figure 8 for Figure 6 A local enlarged schematic diagram of area B.

[0023] In the figure: 1. chassis; 2. lifting mechanism; 21. base; 22. slide rail; 23. slide rod; 24. side frame; 25. second motor; 26. first worm; 27. torque transmission mechanism; 271. grip frame; 2711. first through hole; 2712. first inner ring groove; 272. rotating drum; 2721. outer gear ring groove; 2722. first inner thread; 273. tooth head rod; 3. first motor; 4. coupling; 5. telescopic mechanism; 51. second worm; 52. outer drum; 521. second through hole; 53. first inner drum; 531. second inner thread; 54. first sleeve; 541. first outer thread; 55. second inner drum; 551. third inner thread; 56. second sleeve; 561. second outer thread; 57. top drum; 571. fourth inner thread; 6. direction-changing wheel frame; 7. winch 8. Sampling mechanism; 81. Steel cable; 82. Diving mechanism; 821. Outer ring; 8211. Boss; 822. Inner ring; 8221. Reciprocating groove; 8222. Second inner ring groove; 823. One-way mechanism; 8231. Bevel gear; 8232. First wedge; 8233. First spring; 8234. First carriage; 824. Connecting rod; 825. One-way valve; 826. Air chamber; 83. Third motor; 84. Main cylinder shell; 85. Liquid extraction mechanism; 851. Slide plate; 852. Second spring; 853. Second wedge block; 854. Turntable; 8541. Inner ring tooth groove; 8542. Third external thread; 855. Slide; 8551. Fifth internal thread; 856. Assembly frame; 857. Liquid collecting cylinder; 8571. Partition; 8572. Third through hole; 86. Bottom basket. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1 As shown, the present invention provides a technical solution of a sewage sampling device with a fixed-point collection function, including a base frame 1, a lifting mechanism 2, a first motor 3, a coupling 4, a telescopic mechanism 5, a changing wheel frame 6, a winch 7 and a sampling mechanism 8. The lifting mechanism 2, the first motor 3, the telescopic mechanism 5 and the winch 7 are all fixedly connected to the base frame 1, the coupling 4 is transmission-connected to the output end of the first motor 3 and the telescopic mechanism 5, the changing wheel frame 6 is fixedly connected to the telescopic mechanism 5, the sampling mechanism 8 is fixedly connected to the winch 7, and the sampling mechanism 8 is slidingly connected to the changing wheel frame 6.

[0026] This sampling device is used for fixed-point sampling of river sewage. The device is placed on the side of the river, and the base frame 1 is lifted by the lifting mechanism 2. The first motor 3 outputs torque through the coupling 4, and the coupling 4 transmits torque to the telescopic mechanism 5. The telescopic mechanism 5 extends the reversing wheel frame 6 to the top of the collection point in the river. The winch 7 unwinds at the same time to lower the sampling mechanism 8. The sampling mechanism 8 floats on the surface of the river. Through the rotation mode set by its internal motor, the sampling mechanism 8 can dive to different water depths in a direction to complete the stratified sampling and preservation of sewage in different water layers. After the sampling mechanism 8 completes the preservation, the winch 7 reels and lifts the sampling mechanism 8 for recovery.

[0027] like Figure 1 As shown, the lifting mechanism 2 includes a base 21, a slide rail 22, a slide rod 23, a side frame 24, a second motor 25, a first worm 26 and a torque transmission mechanism 27. The base 21 is fixedly connected to the slide rail 22 and the torque transmission mechanism 27. The slide rod 23 is fixedly connected to the base 1, and the slide rod 23 is slidably connected to the slide rail 22. The side frame 24 is fixedly connected to the base 21 and the second motor 25. The torque transmission mechanism 27 is transmission-connected to the output end of the second motor 25 and the first worm 26. The first worm 26 is rotationally connected to the base 1.

[0028] The base 21 is inserted into the ground and fixed, and the second motor 25 outputs torque to the torque transmission mechanism 27. The torque is converted by the torque transmission mechanism 27 to cause the first worm 26 to rotate helically. The first worm 26 rotates helically upward to push the base frame 1. The slide rod 23 slides along the slide rail 22, and the first worm 26 lifts the base frame 1.

[0029] like Figure 2 As shown, the torque transmission mechanism 27 includes a grip 271, a rotating cylinder 272 and a tooth head rod 273. The grip 271 is fixedly connected to the base 21, and the tooth head rod 273 is transmission-connected to the output end of the second motor 25. The grip 271 is provided with a first through hole 2711 and a first inner ring groove 2712. The first through hole 2711 is rotationally connected to the tooth head rod 273, and the rotating cylinder 272 is slidingly connected to the first inner ring groove 2712. The rotating cylinder 272 is provided with an outer tooth ring groove 2721 and a first inner thread 2722. The outer tooth ring groove 2721 is engaged with the tooth surface of the tooth head rod 273, and the first inner thread 2722 is threadedly connected to the first worm 26.

[0030] The second motor 25 outputs a torque to drive the tooth head rod 273 to rotate in the first through hole 2711. The tooth head rod 273 engages with the tooth surface of the outer ring groove 2721, thereby converting the torque of the tooth head rod 273, causing the rotating drum 272 to rotate in the first inner ring groove 2712 around the axis of the first worm 26. The first internal thread 2722 provided on the rotating drum 272 is threadedly connected to the first worm 26, thereby converting the rotation of the rotating drum 272 into a spiral rotation of the first worm 26 upward along its axis.

[0031] like Figure 3As shown, the telescopic mechanism 5 includes a second worm 51, an outer cylinder 52, a first inner cylinder 53, a first sleeve 54, a second inner cylinder 55, a second sleeve 56 and a top cylinder 57. The outer cylinder 52 is fixedly connected to the base frame 1. The outer cylinder 52 is provided with a second through hole 521. The second worm 51 is rotatably connected to the second through hole 521. The second worm 51 is transmission-connected to the coupling 4. The first inner cylinder 53 is provided with a second internal thread 531. The second internal thread 531 is threadedly connected to the second worm 51. The first inner cylinder 53 is slidably connected to the outer cylinder 52 and the second inner cylinder 55. The first sleeve The tube 54 is slidingly connected to the second worm 51, the first sleeve 54 is provided with a first external thread 541, the second inner tube 55 is provided with a third internal thread 551, the first external thread 541 and the third internal thread 551 are threadedly connected, the second sleeve 56 is slidingly connected to the first external thread 541, the second sleeve 56 is provided with a second external thread 561, the top tube 57 is provided with a fourth internal thread 571, the second external thread 561 and the fourth internal thread 571 are threadedly connected, the top tube 57 is slidingly connected to the second external thread 561, and the top tube 57 is fixedly connected to the changing wheel frame 6.

[0032] The output torque of the first motor 3 is transmitted to the second worm 51 through the coupling 4, and the second worm 51 rotates in the second through hole 521. The first inner cylinder 53 slides along the axis of the outer cylinder 52 through the threaded connection between the second worm 51 and the second internal thread 531. The second worm 51 rotates and drives it to rotate through the protrusion provided on the first sleeve 54. The second inner cylinder 55 slides along the axis of the first inner cylinder 53 through the threaded connection between the first external thread 541 and the third internal thread 551. The first external thread 541 drives it to rotate through the protrusion provided on the second sleeve 56. The second sleeve 56 is transformed into a push cylinder 57 that slides along its axis through the threaded connection between the second external thread 561 and the fourth internal thread 571. The push cylinder 57 pushes out the changing wheel frame 6, so that it extends to the center of the river channel.

[0033] like Figure 4 As shown, the sampling mechanism 8 includes a steel cable 81, a diving mechanism 82, a third motor 83, a main cylinder shell 84, a liquid collection mechanism 85 and a bottom basket 86. The steel cable 81 is fixedly connected to the winch 7 and the diving mechanism 82, the steel cable 81 is slidably connected to the changing wheel frame 6, the diving mechanism 82 is fixedly connected to the third motor 83, the output end of the third motor 83 is fixedly connected to the diving mechanism 82 and the liquid collection mechanism 85, the main cylinder shell 84 is fixedly connected to the diving mechanism 82, the liquid collection mechanism 85 and the bottom basket 86, and the liquid collection mechanism 85 is slidably connected to the bottom basket 86.

[0034] The steel cable 81 extends to the center of the river channel along the changing wheel frame 6, and the steel cable 81 is unwound through the winch 7, so that the bottom basket 86 contacts the water surface of the river channel. The third motor 83 outputs a torque according to the pre-set setting. When the third motor 83 outputs the specified clockwise torque, the diving mechanism 82 absorbs water to increase the weight of the sampling mechanism 8, discharges the internal pre-stored gas, and the sampling mechanism 8 starts to dive as a whole. When it dives to the specified depth, the third motor 83 outputs the specified counterclockwise torque, and the liquid sampling mechanism 85 samples the sewage of the water layer at that depth and stores it in the bottom basket 86. This sampling mechanism 8 can dive to water layers of different depths for multiple samplings in batches. After completing multiple sampling tasks, the winch 7 reels the steel cable 81 and lifts the sampling mechanism 8 out of the water layer for recovery.

[0035] like Figure 5 As shown, the diving mechanism 82 includes an outer ring 821, an inner ring tube 822, a one-way mechanism 823, a connecting rod 824, a one-way valve 825 and an air chamber 826. The outer ring 821 is slidingly connected to the main tube shell 84, and a boss 8211 is provided on the outer ring 821. A reciprocating groove 8221 and a second inner ring groove 8222 are provided on the inner ring tube 822. The boss 8211 is slidingly connected to the reciprocating groove 8221, and the second inner ring groove 8222 is slidingly connected to the one-way mechanism 823. The connecting rod 824 is fixedly connected to the outer ring 821 and the one-way valve 825. The air chamber 826 is fixedly connected to the third motor 83 and the one-way valve 825. The output end of the third motor 83 is fixedly connected to the one-way mechanism 823.

[0036] The third motor 83 outputs counterclockwise torque according to the pre-setting. When the direction of the torque transmitted by the output end of the third motor 83 is the specified clockwise, the one-way mechanism 823 transmits the torque to the inner ring tube 822. Through the sliding connection between the reciprocating groove 8221 provided on the inner ring tube 822 and the protruding column 8211 on the outer ring 821, the rotation of the inner ring tube 822 is converted into the reciprocating displacement of the outer ring 821 along the axis of the main tube shell 84. The reciprocating displacement of the outer ring 821 pushes open the one-way valve 825. When the one-way valve 825 is reciprocatingly opened, river water enters the air chamber 826 in batches, and the air in the air chamber 826 is discharged. The weight of the diving mechanism 82 gradually increases with the number of times river water enters. When it descends to the specified depth, the third motor 83 stops outputting torque.

[0037] like Figure 7As shown, the one-way mechanism 823 includes a bevel gear 8231, a first wedge block 8232, a first spring 8233 and a first slide 8234. The bevel gear 8231 is fixedly connected to the output end of the third motor 83, and the first slide 8234 is fixedly connected to the second inner ring groove 8222. The first wedge block 8232, the first spring 8233 and the first slide 8234 are each provided with several groups, and the several groups of first wedge blocks 8232 are evenly distributed along the circumference of the second inner ring groove 8222. The first wedge block 8232 contacts the bevel gear 8231, and the first wedge block 8232 is slidably connected to the second inner ring groove 8222 and the first slide 8234. The first spring 8233 is fixedly connected to the outer ring 821 and the first wedge block 8232.

[0038] The third motor 83 outputs a clockwise torque according to the pre-setting, and the output end of the third motor 83 drives the bevel gear 8231 to rotate. The vertical tooth surface of the bevel gear 8231 contacts the direct surface of the first wedge block 8232, and the bevel gear 8231 presses against the first slide 8234 through the first wedge block 8232 to drive the inner ring tube 822 to rotate. When the third motor 83 outputs a counterclockwise torque according to the pre-setting, the bevel tooth surface of the bevel gear 8231 contacts the direct surface of the first wedge block 8232. As the bevel gear 8231 rotates, it pushes the first wedge block 8232 to move along the first slide 8234, and the first wedge block 8232 compresses the first spring 8233 to complete the reciprocating motion.

[0039] like Figure 6 、 Figure 8 As shown, the liquid taking mechanism 85 includes a slide plate 851, a second spring 852, a second wedge block 853, a rotating disk 854, a slide cylinder 855, an assembly frame 856 and a liquid collecting cylinder 857. The slide plate 851 is fixedly connected to the output end of the third motor 83. The second spring 852 and the second wedge block 853 are provided in several groups. Several groups of second wedge blocks 853 are evenly distributed along the circumference of the slide plate 851. The second spring 852 is fixedly connected to the slide plate 851 and the second wedge block 853. The rotating disk 854 is provided with an inner ring tooth groove 8541 and a third external thread 8542. The second wedge block 853 is in contact with the inner ring tooth groove 8541. The slide cylinder 855 is provided with a There is a fifth internal thread 8551, the third external thread 8542 is threadedly connected to the fifth internal thread 8551, the assembly frame 856 is fixedly connected to the main cylinder shell 84, the slide 855 is slidably connected to the assembly frame 856, the slide 855 is fixedly connected to the liquid collecting cylinder 857, the liquid collecting cylinder 857 is slidably connected to the main cylinder shell 84 and the bottom basket 86, and a partition 8571 and a third through hole 8572 are provided on the liquid collecting cylinder 857. The partition 8571 and the third through hole 8572 are each provided in several groups, and several groups of partitions 8571 are linearly evenly distributed along the axis of the liquid collecting cylinder 857, and several groups of third through holes 8572 are circumferentially evenly distributed along the side wall of the liquid collecting cylinder 857.

[0040] The wedge surface of the second wedge block 853 faces opposite to that of the first wedge block 8232. When the third motor 83 outputs a clockwise torque, the inclined surface of the second wedge block 853 contacts the inclined tooth surface of the inner ring tooth groove 8541. The inner ring tooth groove 8541 pushes the second wedge block 853 to compress the second spring 852 in the slide plate 851 to move. When the sampling mechanism 8 descends to the specified water depth, the third motor 83 outputs a counterclockwise torque to the slide plate 851 according to the pre-set setting. The slide plate 851 rotates to make the second wedge block 853 directly contact the vertical tooth surface of the inner ring tooth groove 8541, and the turntable 854 is driven to rotate through the second wedge block 853. The rotation of the turntable 854 is converted into a reciprocating sliding of the slide 855 along the axis of the assembly frame 856 through the threaded connection between the third external thread 8542 set on the turntable 854 and the fifth internal thread 8551 on the slide 855. The slide 855 pushes the liquid collecting cylinder 857 to slide along the main cylinder shell 84 and the bottom basket 86. When the liquid collecting cylinder 857 slides to the third through hole 8572 located between the main cylinder shell 84 and the bottom basket 86, the river water enters the different liquid chambers separated by the partition 8571 through the third through hole 8572. As the third through hole 8572 is blocked by the bottom basket 86, the sampling and preservation of the water layer is completed.

[0041] Working principle of the present invention: This sampling device is used for sampling river sewage at a fixed point. The base frame 1 is lifted by the lifting mechanism 2. The first motor 3 outputs torque through the coupling 4 to the telescopic mechanism 5. The steel cable 81 extends along the reversing wheel frame 6 to the top of the sampling point in the center of the river. The winch 7 unwinds the steel cable 81 to lower the sampling mechanism 8. The winch 7 unwinds the steel cable 81. The bottom basket 86 contacts the water surface of the river. When the torque transmitted by the output end of the third motor 83 is in the prescribed clockwise direction, the output end of the third motor 83 drives the bevel gear 82. 31 rotates, the vertical tooth surface of the bevel gear 8231 contacts the vertical surface of the first wedge block 8232, and the bevel gear 8231 drives the inner ring cylinder 822 to rotate. Through the sliding connection between the reciprocating groove 8221 and the protruding column 8211, the outer ring 821 moves back and forth along the axis of the main cylinder shell 84 to push open the one-way valve 825, and river water enters the air chamber 826 in batches to discharge air. As the number of times river water enters gradually increases, the sampling mechanism 8 begins to dive as a whole. When it reaches the specified depth, the third motor 83 stops outputting torque, and the second The wedge surface of the wedge block 853 faces oppositely to that of the first wedge block 8232. The third motor 83 outputs a counterclockwise torque to the slide plate 851 according to a pre-set setting. The slide plate 851 rotates so that the second wedge block 853 directly contacts the vertical tooth surface of the inner ring tooth groove 8541, driving the turntable 854 to rotate. Through the threaded connection between the third external thread 8542 and the fifth internal thread 8551, the slide cylinder 855 pushes the liquid collecting cylinder 857 to slide along the main cylinder shell 84 and the bottom basket 86. When the liquid collecting cylinder 857 slides to the third through hole 8572 is located between the main cylinder shell 84 and the bottom basket 86. The river water enters the different liquid chambers separated by the partition 8571 through the third through hole 8572. As the third through hole 8572 is blocked by the bottom basket 86, the sampling and preservation of the water layer is completed. The liquid sampling mechanism 85 samples the sewage of the water layer at this depth and stores it in the bottom basket 86. This sampling mechanism 8 can dive to water layers of different depths for multiple samplings in batches. After completing multiple samplings, the winch 7 reels the steel cable 81 and lifts the sampling mechanism 8 out of the water layer for recovery.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A sewage sampling device with a fixed-point collection function, characterized in that: The sampling device comprises a base frame (1), a lifting mechanism (2), a first motor (3), a coupling (4), a telescopic mechanism (5), a direction-changing wheel frame (6), a winch (7) and a sampling mechanism (8); the lifting mechanism (2), the first motor (3), the telescopic mechanism (5) and the winch (7) are all fixedly connected to the base frame (1); the coupling (4) is transmission-connected to an output end of the first motor (3) and the telescopic mechanism (5); the direction-changing wheel frame (6) is fixedly connected to the telescopic mechanism (5); the sampling mechanism (8) is fixedly connected to the winch (7); and the sampling mechanism (8) is slidably connected to the direction-changing wheel frame (6).

2. A sewage sampling device with a fixed-point collection function according to claim 1, characterized in that: The lifting mechanism (2) comprises a base (21), a slide rail (22), a slide rod (23), a side frame (24), a second motor (25), a first worm gear (26) and a torque transmission mechanism (27); the base (21) is fixedly connected to the slide rail (22) and the torque transmission mechanism (27); the slide rod (23) is fixedly connected to the base frame (1); the slide rod (23) is slidably connected to the slide rail (22); the side frame (24) is fixedly connected to the base (21) and the second motor (25); the torque transmission mechanism (27) is transmission-connected to the output end of the second motor (25) and the first worm gear (26); and the first worm gear (26) is rotationally connected to the base frame (1).

3. A sewage sampling device with a fixed-point collection function according to claim 2, characterized in that: The torque transmission mechanism (27) comprises a grip frame (271), a rotating cylinder (272) and a tooth head rod (273); the grip frame (271) is fixedly connected to the base (21); the tooth head rod (273) is drivingly connected to the output end of the second motor (25); the grip frame (271) is provided with a first through hole (2711) and a first inner ring groove (2712); the first through hole (2711) is rotationally connected to the tooth head rod (273); the rotating cylinder (272) is slidingly connected to the first inner ring groove (2712); the rotating cylinder (272) is provided with an outer tooth ring groove (2721) and a first inner thread (2722); the outer tooth ring groove (2721) is meshed with the tooth surface of the tooth head rod (273); the first inner thread (2722) is threadedly connected to the first worm (26).

4. The sewage sampling device with fixed-point collection function according to claim 1 is characterized in that: The telescopic mechanism (5) comprises a second worm (51), an outer cylinder (52), a first inner cylinder (53), a first sleeve (54), a second inner cylinder (55), a second sleeve (56) and a top cylinder (57); the outer cylinder (52) is fixedly connected to the base frame (1); a second through hole (521) is provided on the outer cylinder (52); the second worm (51) is rotatably connected to the second through hole (521); the second worm (51) is transmission-connected to the coupling (4); a second internal thread (531) is provided on the first inner cylinder (53); the second internal thread (531) is threadedly connected to the second worm (51); the first inner cylinder (53) is slidably connected to the outer cylinder (52) and the second inner cylinder (55); the first The sleeve (54) is slidably connected to the second worm (51); the first sleeve (54) is provided with a first external thread (541); the second inner sleeve (55) is provided with a third internal thread (551); the first external thread (541) and the third internal thread (551) are connected by threads; the second sleeve (56) is slidably connected to the first external thread (541); the second sleeve (56) is provided with a second external thread (561); the top sleeve (57) is provided with a fourth internal thread (571); the second external thread (561) and the fourth internal thread (571) are connected by threads; the top sleeve (57) is slidably connected to the second external thread (561); and the top sleeve (57) is fixedly connected to the direction-changing wheel frame (6).

5. The sewage sampling device with fixed-point collection function according to claim 1 is characterized in that: The sampling mechanism (8) comprises a steel cable (81), a diving mechanism (82), a third motor (83), a main barrel shell (84), a liquid collection mechanism (85) and a bottom basket (86); the steel cable (81) is fixedly connected to the winch (7) and the diving mechanism (82); the steel cable (81) is slidably connected to the direction-changing wheel frame (6); the diving mechanism (82) is fixedly connected to the third motor (83); an output end of the third motor (83) is fixedly connected to the diving mechanism (82) and the liquid collection mechanism (85); the main barrel shell (84) is fixedly connected to the diving mechanism (82), the liquid collection mechanism (85) and the bottom basket (86); and the liquid collection mechanism (85) is slidably connected to the bottom basket (86).

6. The sewage sampling device with fixed-point collection function according to claim 5, characterized in that: The diving mechanism (82) comprises an outer ring (821), an inner ring tube (822), a one-way mechanism (823), a connecting rod (824), a one-way valve (825) and an air chamber (826); the outer ring (821) is slidably connected to the main tube shell (84); the outer ring (821) is provided with a boss (8211); the inner ring tube (822) is provided with a reciprocating groove (8221) and a second inner ring groove (8222); the boss (8211) is slidably connected to the reciprocating groove (8221); the second inner ring groove (8222) is slidably connected to the one-way mechanism (823); the connecting rod (824) is fixedly connected to the outer ring (821) and the one-way valve (825); the air chamber (826) is fixedly connected to the third motor (83) and the one-way valve (825); and the output end of the third motor (83) is fixedly connected to the one-way mechanism (823).

7. A sewage sampling device with a fixed-point collection function according to claim 6, characterized in that: The one-way mechanism (823) comprises a bevel gear (8231), a first wedge block (8232), a first spring (8233) and a first slide (8234); the bevel gear (8231) is fixedly connected to the output end of the third motor (83); the first slide (8234) is fixedly connected to the second inner ring groove (8222); the first wedge block (8232), the first spring (8233) and the first slide (8234) are each provided with a plurality of groups; the plurality of groups of the first wedge blocks (8232) are evenly distributed along the circumference of the second inner ring groove (8222); the first wedge block (8232) contacts the bevel gear (8231); the first wedge block (8232) is slidably connected to the second inner ring groove (8222) and the first slide (8234); and the first spring (8233) is fixedly connected to the outer ring (821) and the first wedge block (8232).

8. The sewage sampling device with fixed-point collection function according to claim 5, characterized in that: The liquid taking mechanism (85) comprises a carriage (851), a second spring (852), a second wedge block (853), a rotating disk (854), a slide cylinder (855), an assembly frame (856) and a liquid collecting cylinder (857); the carriage (851) is fixedly connected to the output end of the third motor (83); the second spring (852) and the second wedge block (853) are provided in a plurality of groups; the plurality of groups of the second wedge blocks (853) are evenly distributed along the circumference of the carriage (851); the second spring (852) and the carriage (851) and the second wedge block (853) are fixedly connected; the rotating disk (854) is provided with an inner ring tooth groove (8541) and a third external thread (8542); the second wedge block (853) is in contact with the inner ring tooth groove (8541); the slide cylinder (855) is provided with A fifth internal thread (8551) is provided, the third external thread (8542) is threadedly connected to the fifth internal thread (8551), the assembly frame (856) is fixedly connected to the main cylinder shell (84), the slide cylinder (855) is slidably connected to the assembly frame (856), the slide cylinder (855) is fixedly connected to the liquid collecting cylinder (857), the liquid collecting cylinder (857) is slidably connected to the main cylinder shell (84) and the bottom basket (86), a partition plate (8571) and a third through hole (8572) are provided on the liquid collecting cylinder (857), the partition plates (8571) and the third through holes (8572) are provided in a plurality of groups, the plurality of groups of the partition plates (8571) are linearly evenly distributed along the axis of the liquid collecting cylinder (857), and the plurality of groups of the third through holes (8572) are circumferentially evenly distributed along the side wall of the liquid collecting cylinder (857).

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