A portable sampling device for sewage detection

Abstract

The present invention relates to a sampling device, and in particular to a portable sampling device for sewage detection. The present invention provides a portable sampling device for sewage detection that can automatically clamp, automatically filter and automatically cool. A portable sampling device for sewage detection includes a cylindrical mounting tube and a sampling tube, wherein the sampling tube is provided at the bottom of the cylindrical mounting tube; a first electric push rod, wherein the first electric push rod is provided on the inner side of the cylindrical mounting tube; a piston, wherein a piston is provided on the telescopic rod of the first electric push rod, and the piston is slidably connected to the cylindrical mounting tube; a first contact switch, wherein the first contact switch is provided on the cylindrical mounting tube; a placing mechanism, wherein a placing mechanism is provided on the cylindrical mounting tube; a liquid pumping mechanism, wherein a liquid pumping mechanism is provided on the cylindrical mounting tube, and the liquid pumping mechanism cooperates with the placing mechanism. The present invention achieves the effect of automatic clamping by providing a placing mechanism and a stabilizing mechanism, wherein the stabilizing mechanism cooperates with the placing mechanism, thereby clamping the sampling bottle.

Description

Technical Field

[0001] The invention relates to a sampling device, in particular to a portable sampling device for sewage detection. Background Art

[0002] Sewage testing is a very important link in water environment monitoring. Traditional sewage testing sampling devices are fixed in style, and generally the experimenters manually operate to collect water samples. The collection requires the cooperation of two people, one to extract the sampler and the other to receive the sewage sample. This type of operation is too cumbersome, and it is not easy to ensure the stability of water pouring. There will be more or less sewage impurities in the collection, which will affect the test results and prolong the detection time. In addition, the external environment temperature after sampling with the existing sewage sampling device is easy to cause changes in the microorganisms in the water sample.

[0003] Patent application CN210375806U, published on April 21, 2020, discloses a portable sewage detection sampling device, including a sewage sampling head, a telescopic tube, a mounting plate, a fixed block, a spring groove, a spring one, a mounting block, a mounting groove, a movable groove and a spring two. By inserting the mounting plate into the inner cavity of the fixed block, the mounting block is moved into the inner cavity of the mounting groove through the setting of the inclined surface. At this time, the user rotates the rotating block, and the rotating block drives the threaded rod to rotate, so that the threaded rod drives the wedge block two to move into the inner cavity of the movable groove, and then squeezes the wedge block one. At the same time, the spring two drives the wedge block one to drive the fixed rod to move into the inner cavity of the fixed groove, that is, the effect of stabilizing the mounting plate is achieved. Conversely, the rotating block is rotated in the opposite direction, and the tensile force of the spring two drives the fixed rod to move out of the inner cavity of the fixed groove, and the mounting plate can be taken out for storage and carrying, thereby achieving the purpose of convenient carrying. The user can adjust the length of the sewage sampling head by stretching the telescopic tube, thereby achieving the purpose of sampling sewage in different waters and at different depths. However, the device cannot achieve automatic refrigeration, which is inconvenient to store water samples.

[0004] Therefore, it is urgent to design a portable sampling device for sewage detection that can automatically clamp, automatically filter and automatically cool. Summary of the invention

[0005] In order to overcome the shortcomings of existing sewage sampling devices, such as cumbersome operation, inability to filter impurities in water samples and inconvenience in storing water samples, the technical problem of the present invention is to provide a portable sampling device for sewage detection that can automatically clamp, automatically filter and automatically cool.

[0006] The technical implementation scheme of the present invention is: a portable sampling device for sewage detection, including a cylindrical mounting tube and a sampling tube, a sampling tube is provided at the bottom of the cylindrical mounting tube; a first electric push rod, a first electric push rod is provided on the inner side of the cylindrical mounting tube; a piston, a piston is provided on the telescopic rod of the first electric push rod, and the piston is slidably connected to the cylindrical mounting tube; a first contact switch, a first contact switch is provided on the cylindrical mounting tube; a placing mechanism, a placing mechanism is provided on the cylindrical mounting tube; a liquid pumping mechanism, a liquid pumping mechanism is provided on the cylindrical mounting tube, and the liquid pumping mechanism cooperates with the placing mechanism.

[0007] As a further preferred scheme, the placement mechanism includes a placement rack, two placement racks are provided on the columnar mounting tube; a first fixing rack, a first fixing rack is provided on the outside of the placement rack; a second fixing rack, two second fixing racks are provided on the columnar mounting tube, and the second fixing rack is connected to the first fixing rack; a third fixing rack, a third fixing rack is provided at the lower part of the columnar mounting tube.

[0008] As a further preferred embodiment, the liquid pumping mechanism includes a fourth fixed frame, two fourth fixed frames are provided on the cylindrical mounting tube; a liquid pumping tube, a liquid pumping tube is slidably provided on the inner side of the fourth fixed frame, and the lower part of the liquid pumping tube is connected to the cylindrical mounting tube; a vacuum suction cup, a vacuum suction cup is provided on the upper side of the liquid pumping tube, and the vacuum suction cup is located above the placement frame; a first water pump, a first water pump is provided on the top of the vacuum suction cup on one side, and the first water pump is connected to the liquid pumping tube on the adjacent side; a first liquid level sensor, a first liquid level sensor is provided on the top of the first fixed frame on the side close to the first water pump; a second liquid level sensor, a second liquid level sensor is provided on the top of the first fixed frame on the side away from the first water pump; a second water pump, a second water pump is provided on the top of the vacuum suction cup on the other side, and the second water pump is connected to the liquid pumping tube on the adjacent side; a first pressure sensor, a first electric push rod is provided with a first pressure sensor, and the first pressure sensor cooperates with the piston.

[0009] As a further preferred scheme, it also includes a stabilizing mechanism, which includes a second pressure sensor, and a second pressure sensor is provided on the top of the placement frame; a fifth fixing frame, and a fifth fixing frame is provided on the upper outer side of the first fixing frame; a second electric push rod, and a second electric push rod is provided on the fifth fixing frame; an arc clamp, and an arc clamp is connected to the telescopic rod of the second electric push rod; a second contact switch, and a second contact switch is provided on the cylindrical mounting tube.

[0010] As a further preferred embodiment, it also includes a filtering mechanism, which includes a sixth fixing frame, the sixth fixing frame is provided on the first fixing frame; a fixing rod, two fixing rods are provided on the outer side of the sixth fixing frame; a movable plate, a movable plate is slidably connected between two adjacent fixing rods; a first spring, a first spring is provided on the fixing rod, and the first spring is connected between the sixth fixing frame and the movable plate; a fixed block, a fixed block is provided on the top of the movable plate; a rotating telescopic rod, a rotating telescopic rod is rotatably connected between the two sixth fixing frames and the columnar mounting tube, and the rotating telescopic rod is rotatably connected to the fixed block; a fixed plate, a fixed plate is provided on the first fixing frame; a movable filter plate, a movable filter plate is slidably provided on the fixed plate, and the movable filter plate is rotatably connected to the rotating telescopic rod.

[0011] As a further preferred scheme, it also includes a cleaning mechanism, which includes a wedge block, a wedge block is provided on the upper outer side of the movable filter plate; a seventh fixing frame, two seventh fixing frames are provided on the columnar mounting tube; a slide rod, a slide rod is slidably provided on the inner side of the seventh fixing frame; a special-shaped rod, a special-shaped rod is provided at the bottom of the slide rod, and the special-shaped rod cooperates with the wedge block; a cleaning brush, a cleaning brush is provided on the outer side of the special-shaped rod, and the cleaning brush cooperates with the movable filter plate; a second spring, a second spring is provided on the slide rod, and the second spring is connected between the slide rod and the seventh fixing frame.

[0012] As a further preferred scheme, it also includes a refrigeration mechanism, the refrigeration mechanism includes a connecting rod, two connecting rods are provided on the placement rack; a first semiconductor refrigeration plate, the first semiconductor refrigeration plate is connected between the two connecting rods on one side; a first temperature sensor, the first semiconductor refrigeration plate is provided with the first temperature sensor; a second semiconductor refrigeration plate, the second semiconductor refrigeration plate is connected between the two connecting rods on the other side; a second temperature sensor, the second semiconductor refrigeration plate is provided with a second temperature sensor.

[0013] As a further preferred solution, it also includes a control box, which is fixedly connected to the upper side of the cylindrical mounting tube, and a battery, a control module and a power module are installed in the control box. The switching power supply supplies power to the portable sampling device for sewage detection, and the output end of the switching power supply is electrically connected to the power module. The power module is connected to a main power switch through a line, and the control module and the power module are electrically connected; the control module is connected to a DS1302 clock circuit and a 24C02 circuit; the first contact switch and the second contact switch are both electrically connected to the control module, the first liquid level sensor and the second liquid level sensor are both electrically connected to the control module, the first pressure sensor and the second pressure sensor are both electrically connected to the control module, the first temperature sensor and the second temperature sensor are both electrically connected to the control module, the first electric push rod and the second electric push rod are both connected to the control module through a relay control module, the first semiconductor refrigeration plate and the second semiconductor refrigeration plate are both connected to the control module through a relay control module, and the first water pump and the second water pump are both connected to the control module through a relay control module.

[0014] Beneficial effects:

[0015] 1. The present invention is provided with a placing mechanism and a stabilizing mechanism, and the stabilizing mechanism cooperates with the placing mechanism to clamp the sampling bottle, thereby achieving an automatic clamping effect;

[0016] 2. The present invention is provided with a pumping mechanism, which operates to make the sewage in the cylindrical installation tube flow into the sampling bottle, thereby achieving the effect of automatic pumping;

[0017] 3. The present invention is provided with a filtering mechanism and a cleaning mechanism. The cleaning mechanism first cleans the filtering mechanism, and then the filtering mechanism filters the extracted sewage, thereby achieving an automatic filtering effect, thereby obtaining relatively clean sewage, so that people can subsequently detect the sewage;

[0018] 4. The present invention is provided with a refrigeration mechanism, which can lower the temperature of the water sample and achieve an automatic refrigeration effect, thereby being able to inhibit changes in organisms in the sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure from the first viewing angle of the present invention.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure from a second viewing angle of the present invention.

[0021] Figure 3 It is a cross-sectional three-dimensional structural schematic diagram of the present invention.

[0022] Figure 4 It is a cross-sectional three-dimensional structural schematic diagram of the placement mechanism of the present invention.

[0023] Figure 5 It is a schematic diagram of a first partial cross-sectional three-dimensional structure of the liquid pumping mechanism of the present invention.

[0024] Figure 6 It is a schematic diagram of a second partial cross-sectional three-dimensional structure of the liquid pumping mechanism of the present invention.

[0025] Figure 7 It is a schematic diagram of the cross-sectional three-dimensional structure of the stabilizing mechanism of the present invention.

[0026] Figure 8 It is a schematic diagram of a first partial cross-sectional three-dimensional structure of the filtering mechanism of the present invention.

[0027] Fig. 9 It is a schematic diagram of a second partial cross-sectional three-dimensional structure of the filtering mechanism of the present invention.

[0028] Fig.10 It is a schematic diagram of a first partial three-dimensional structure of the cleaning mechanism of the present invention.

[0029] Fig.11 It is a schematic diagram of a second partial three-dimensional structure of the cleaning mechanism of the present invention.

[0030] Fig.12 It is a schematic diagram of a first partial cross-sectional three-dimensional structure of the refrigeration mechanism of the present invention.

[0031] Fig.13 It is a schematic diagram of a second partial cross-sectional three-dimensional structure of the refrigeration mechanism of the present invention.

[0032] Fig.14 It is a circuit block diagram of the present invention.

[0033] Fig.15 It is a circuit schematic diagram of the present invention.

[0034] Wherein: 1: columnar mounting tube, 2: sampling tube, 3: first electric push rod, 4: piston, 5: first contact switch, 6: control box, 7: placement mechanism, 71: placement frame, 72: first fixing frame, 73: second fixing frame, 74: third fixing frame, 8: liquid extraction mechanism, 81: fourth fixing frame, 82: liquid extraction tube, 83: vacuum suction cup, 84: first water pump, 85: first liquid level sensor, 86: second liquid level sensor, 87: second water pump, 88: first pressure sensor, 9: stabilization mechanism, 91: second pressure sensor, 92: fifth fixing frame, 93: second electric push rod, 94: arc clamp, 95: second contact switch, 10: filtering mechanism, 101: sixth fixed frame, 102: fixed rod, 103: movable plate, 104: first spring, 105: fixed block, 106: rotating telescopic rod, 107: fixed plate, 108: movable filter plate, 11: cleaning mechanism, 111: wedge block, 112: seventh fixed frame, 113: special-shaped rod, 114: cleaning brush, 115: sliding rod, 116: second spring, 12: cooling mechanism, 121: connecting rod, 122: first semiconductor cooling plate, 123: first temperature sensor, 124: second semiconductor cooling plate, 125: second temperature sensor. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention are described clearly and completely below. 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.

[0036] Example 1

[0037] A portable sampling device for sewage testing, such as Figure 1-6 As shown, it includes a cylindrical mounting tube 1, a sampling tube 2, a first electric push rod 3, a piston 4, a first contact switch 5, a placement mechanism 7 and a liquid extraction mechanism 8. The sampling tube 2 is provided at the bottom of the cylindrical mounting tube 1, the first electric push rod 3 is provided on the inner side of the cylindrical mounting tube 1, the piston 4 is provided on the telescopic rod of the first electric push rod 3, the piston 4 is slidably connected to the cylindrical mounting tube 1, the first contact switch 5 is provided on the top rear side of the cylindrical mounting tube 1, the cylindrical mounting tube 1 is provided with a placement mechanism 7, the cylindrical mounting tube 1 is provided with a liquid extraction mechanism 8, and the liquid extraction mechanism 8 cooperates with the placement mechanism 7.

[0038] People put two sampling bottles on the placement mechanism 7, and make the pumping mechanism 8 cover the bottle mouth of the sampling bottle, then press the main power switch to power on the device, and then move the device until the sampling tube 2 is inserted into the sewage, and then press the first contact switch 5, the first contact switch 5 sends a signal, and the control module controls the first electric push rod 3 to shorten by five seconds after receiving the signal, so that the piston 4 slides upward in the cylindrical mounting tube 1 for five seconds, and then the sewage passes through the sampling tube 2 into the cylindrical mounting tube 1. After five seconds, the piston 4 stops moving and touches part of the pumping mechanism 8, so that the control module controls the pumping mechanism 8 to operate, and the pumping mechanism 8 pumps liquid, so that the sewage in the cylindrical mounting tube 1 flows to the sampling bottle on the front side. After a certain amount of sewage is collected, the pumping mechanism 8 stops running, and then people press the first contact switch 5 again, so that the control module controls the first electric push rod 3 to extend for five seconds, and then the piston 4 moves downward for five seconds, and then people move the device to other positions of the sewage, and then people press the first contact switch 5, so that the piston 4 moves upward again, so that the sewage enters the cylindrical mounting tube 1 through the sampling tube 2, and then the pumping mechanism 8 makes the sewage in the cylindrical mounting tube 1 flow to the sampling bottle on the rear side, and then people press the first contact switch 5 again, so that the piston 4 moves downward back to its original position, and then people leave the device from the sewage, and then people press the main power switch again to cut off the power to the device, and then people take out two sampling bottles filled with sewage.

[0039] The placement mechanism 7 includes a placement frame 71, a first fixing frame 72, a second fixing frame 73 and a third fixing frame 74. The placement frame 71 is provided at the lower part of the front and rear sides of the columnar mounting tube 1, the first fixing frame 72 is provided on the outer side of the placement frame 71, the second fixing frame 73 is provided at the upper part of the left and right sides of the columnar mounting tube 1, the second fixing frame 73 is connected to the first fixing frame 72, and the third fixing frame 74 is provided at the lower part of the columnar mounting tube 1.

[0040] People place two sampling bottles in the placement racks 71 on the front and rear sides respectively. The first fixing rack 72 limits the sampling bottles. Then people start to draw water for sampling. After people finish sampling, they separate the sampling bottles from the extraction mechanism 8 and then take out the sampling bottles containing sewage from the placement rack 71.

[0041] The liquid extraction mechanism 8 includes a fourth fixing frame 81, a liquid extraction pipe 82, a vacuum suction cup 83, a first water pump 84, a first liquid level sensor 85, a second liquid level sensor 86, a second water pump 87 and a first pressure sensor 88. The fourth fixing frame 81 is provided on the upper part of the left and right sides of the columnar mounting tube 1. The liquid extraction pipe 82 is slidably provided inside the fourth fixing frame 81. The lower part of the liquid extraction pipe 82 is connected to the columnar mounting tube 1. The upper side of the liquid extraction pipe 82 is provided with a vacuum suction cup 83. The vacuum suction cup 83 is located on the placement frame 71. At the top, a first water pump 84 is provided on the top of the vacuum suction cup 83 on the front side, and the first water pump 84 is connected to the liquid extraction pipe 82 on the front side. A first liquid level sensor 85 is provided on the top of the first fixed frame 72 on the front side, and a second liquid level sensor 86 is provided on the top of the first fixed frame 72 on the rear side. A second water pump 87 is provided on the top of the vacuum suction cup 83 on the rear side, and the second water pump 87 is connected to the liquid extraction pipe 82 on the rear side. A first pressure sensor 88 is provided on the first electric push rod 3, and the first pressure sensor 88 cooperates with the piston 4.

[0042] People put two sampling bottles, and make the vacuum suction cup 83 suck the mouth of the sampling bottle, and then power on the device. When the piston 4 moves upward for the first time to touch the first pressure sensor 88, the first pressure sensor 88 detects the pressure, and then feeds back the detected data to the control module. The control module compares the detected value with the preset value in the control module. When the detected value reaches the preset value, the control module controls the first water pump 84 to work, so that the sewage in the columnar installation tube 1 flows to the sampling tube 2 on the front side through the front suction pipe 82. At the same time, the first liquid level sensor 85 detects the sewage water level in the sampling bottle on the front side, and then feeds back the detected data to the control module. The control module compares the detected value with the control module. The preset value in is compared with the preset value, and when the detected value reaches the preset value, the control module controls the first water pump 84 to stop working, and then stops pumping liquid. When the piston 4 moves up again to touch the first pressure sensor 88, the first pressure sensor 88 detects the pressure. When the detected value reaches the preset value, the control module controls the second water pump 87 to work, so that the sewage in the cylindrical mounting tube 1 flows to the sampling tube 2 at the rear side through the liquid extraction pipe 82 on the rear side. At the same time, the second liquid level sensor 86 detects the sewage water level in the sampling bottle on the rear side. When the detected value reaches the preset value, the control module controls the second water pump 87 to stop working, and then people cut off the power of the equipment, separate the vacuum suction cup 83 from the sampling bottle, and then remove the sampling bottle.

[0043] Example 2

[0044] On the basis of Example 1, Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13 As shown, it also includes a stabilizing mechanism 9, which includes a second pressure sensor 91, a fifth fixing frame 92, a second electric push rod 93, an arc-shaped clamp 94 and a second contact switch 95. The second pressure sensor 91 is provided on the top of the placement frame 71, and a fifth fixing frame 92 is provided on the upper outer side of the first fixing frame 72. The second electric push rod 93 is provided on the fifth fixing frame 92, and the arc-shaped clamp 94 is connected to the telescopic rod of the second electric push rod 93. A second contact switch 95 is provided on the left side of the top rear side of the columnar mounting tube 1.

[0045] People put the sampling bottle between the first fixed frame 72 and the arc clamp 94, and the sampling bottle is pressed on the second pressure sensor 91. At this time, the second pressure sensor 91 detects the pressure it receives, and then feeds back the detected data to the control module. The control module compares the detected value with the preset value in the control module. When the detected value reaches the preset value, the control module controls the telescopic rod of the second electric push rod 93 to shorten for two seconds, thereby moving the arc clamp 94 to the left for two seconds. The arc clamp 94 cooperates with the first fixed frame 72 to clamp the sampling bottle, achieving the effect of automatic clamping. After two seconds, the arc clamp 94 stops moving. After the sampling is completed, people press and hold the second contact switch 95, and the second contact switch 95 sends a signal. After receiving the signal, the control module controls the telescopic rod of the second electric push rod 93 to extend for two seconds, thereby moving the arc clamp 94 to the right for two seconds. Then people release the second contact switch 95 to stop the arc clamp 94 from moving.

[0046] The filter mechanism 10 is also included, and the filter mechanism 10 includes a sixth fixed frame 101, a fixed rod 102, a movable plate 103, a first spring 104, a fixed block 105, a rotating telescopic rod 106, a fixed plate 107 and a movable filter plate 108. The sixth fixed frame 101 is provided on the upper right side of the first fixed frame 72, and two fixed rods 102 are provided on the outside of the sixth fixed frame 101. The movable plate 103 is slidably connected between the two adjacent fixed rods 102, and the first spring 104 is provided on the fixed rod 102. The first spring 104 is connected between the sixth fixed frame 101 and the movable plate 103, a fixed block 105 is provided on the top of the movable plate 103, and a rotating telescopic rod 106 is rotatably connected between the sixth fixed frame 101 and the columnar mounting tube 1 on the front and rear sides, and the rotating telescopic rod 106 is rotatably connected to the fixed block 105. A fixed plate 107 is provided on the upper left side of the first fixed frame 72, and a movable filter plate 108 is slidably provided on the fixed plate 107, and the movable filter plate 108 is rotatably connected to the rotating telescopic rod 106.

[0047] In the initial state, the arc clamp 94 cooperates with the movable plate 103, and the first spring 104 is in a stretched state. When the arc clamp 94 moves to the left, the first spring 104 is reset, so that the movable plate 103 moves to the left, and then the fixed block 105 moves to the left, and then the rotating telescopic rod 106 rotates and shortens in the vertical direction, so that the movable filter plate 108 moves inward on the fixed plate 107, and then the movable filter plate 108 is inserted into the sampling bottle, and then people pump water for sampling. When the sewage enters the sampling bottle through the movable filter plate 108, the movable filter plate 108 filters the extracted sewage to obtain cleaner sewage, so as to facilitate people to detect the sewage later. When the arc clamp 94 moves to the right, the arc clamp 94 pushes the movable plate 103 to move to the right, and the first spring 104 is stretched, so that the rotating telescopic rod 106 and the movable filter plate 108 move back to their original positions.

[0048] It also includes a cleaning mechanism 11, which includes a wedge block 111, a seventh fixed frame 112, a special-shaped rod 113, a cleaning brush 114, a slide bar 115 and a second spring 116. A wedge block 111 is provided on the upper outer portion of the movable filter plate 108, and seventh fixed frames 112 are provided on the upper front and rear sides of the columnar mounting tube 1. A slide bar 115 is slidably provided on the inner side of the seventh fixed frame 112, and a special-shaped rod 113 is provided at the bottom of the slide bar 115. The special-shaped rod 113 cooperates with the wedge block 111, and a cleaning brush 114 is provided on the outer side of the special-shaped rod 113. The cleaning brush 114 cooperates with the movable filter plate 108. A second spring 116 is provided on the slide bar 115, and the second spring 116 is connected between the slide bar 115 and the seventh fixed frame 112.

[0049] The inward movement of the movable filter plate 108 will drive the wedge block 111 to move inward, thereby causing the special-shaped rod 113 to move downward, causing the cleaning brush 114 to move downward, and causing the sliding rod 115 to slide downward in the seventh fixed frame 112, the second spring 116 is compressed, and then the cleaning brush 114 cleans the surface of the movable filter plate 108, thereby achieving the purpose of automatic cleaning. When the movable filter plate 108 drives the wedge block 111 to move outward, the second spring 116 is reset, causing the special-shaped rod 113 and the cleaning brush 114 to move back to their original positions.

[0050] It also includes a refrigeration mechanism 12, which includes a connecting rod 121, a first semiconductor refrigeration plate 122, a first temperature sensor 123, a second semiconductor refrigeration plate 124 and a second temperature sensor 125. Connecting rods 121 are provided on both sides of the placement rack 71. The first semiconductor refrigeration plate 122 is connected between the connecting rods 121 on the left and right sides of the front, and a first temperature sensor 123 is provided on the upper left side of the first semiconductor refrigeration plate 122. The second semiconductor refrigeration plate 124 is connected between the connecting rods 121 on the left and right sides of the rear, and a second temperature sensor 125 is provided on the upper right side of the second semiconductor refrigeration plate 124.

[0051] The first liquid level sensor 85 detects the sewage water level in the sampling bottle on the front side. When the detected value reaches the preset value, the control module controls the first semiconductor refrigeration chip 122 to work, thereby reducing the temperature in the sampling bottle on the front side, thereby inhibiting biological changes in the sewage. At the same time, the first temperature sensor 123 detects the water temperature and then feeds the detected data back to the control module. The control module compares the detected value with the preset value in the control module. When the detected value reaches the preset value, the control module controls the first semiconductor refrigeration chip 122 to stop working. The second liquid level sensor 86 detects the sewage water level in the sampling bottle on the rear side. When the detected value reaches the preset value, the control module controls the second semiconductor refrigeration chip 124 to work, thereby reducing the temperature in the sampling bottle on the rear side. At the same time, the second temperature sensor 125 detects the water temperature. When the detected value reaches the preset value, the control module controls the second semiconductor refrigeration chip 124 to stop working, thereby achieving an automatic refrigeration effect.

[0052] like Figure 1 , Fig.14 and Fig.15As shown, it also includes a control box 6, the control box 6 is fixedly connected to the upper side of the cylindrical mounting tube 1, and a battery, a control module and a power module are installed in the control box 6. The switching power supply is used to power the portable sampling device for sewage detection. The output end of the switching power supply is electrically connected to the power module. The power module is connected to a main power switch through a line, and the control module and the power module are electrically connected; the control module is connected to a DS1302 clock circuit and a 24C02 circuit; the first contact switch 5 and the second contact switch 95 are both electrically connected to the control module, and the first liquid level sensor 85 and the second The liquid level sensor 86 is electrically connected to the control module, the first pressure sensor 88 and the second pressure sensor 91 are electrically connected to the control module, the first temperature sensor 123 and the second temperature sensor 125 are electrically connected to the control module, the first electric push rod 3 and the second electric push rod 93 are connected to the control module through a relay control module, the first semiconductor refrigeration plate 122 and the second semiconductor refrigeration plate 124 are connected to the control module through a relay control module, and the first water pump 84 and the second water pump 87 are connected to the control module through a relay control module.

[0053] Although the present disclosure has been shown and described with reference to specific exemplary embodiments of the present disclosure, it should be understood by those skilled in the art that various changes in form and details may be made to the present disclosure without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-mentioned embodiments, but should be determined not only by the appended claims, but also by the equivalents of the appended claims.

Claims

1. A portable sampling device for sewage detection, characterized in that it includes: A columnar mounting tube (1) and a sampling tube (2), wherein the sampling tube (2) is provided at the bottom of the columnar mounting tube (1); A first electric push rod (3), wherein the first electric push rod (3) is provided inside the cylindrical mounting tube (1); A piston (4), wherein the telescopic rod of the first electric push rod (3) is provided with a piston (4), and the piston (4) is slidably connected to the columnar mounting tube (1); A first contact switch (5), wherein the cylindrical mounting tube (1) is provided with the first contact switch (5); A placement mechanism (7), wherein the columnar mounting tube (1) is provided with a placement mechanism (7); A liquid extraction mechanism (8), wherein the columnar mounting tube (1) is provided with the liquid extraction mechanism (8), and the liquid extraction mechanism (8) cooperates with the placement mechanism (7); The placing mechanism (7) comprises: A placement rack (71), two placement racks (71) are provided on the columnar mounting tube (1); A first fixing frame (72), wherein the first fixing frame (72) is disposed outside the placement frame (71); A second fixing frame (73), two second fixing frames (73) are provided on the columnar mounting tube (1), and the second fixing frames (73) are connected to the first fixing frame (72); A third fixing frame (74), a third fixing frame (74) is provided at the lower part of the columnar mounting tube (1); The liquid extraction mechanism (8) comprises: A fourth fixing frame (81), two fourth fixing frames (81) are provided on the columnar mounting tube (1); A liquid extraction pipe (82), wherein a liquid extraction pipe (82) is slidably disposed inside the fourth fixed frame (81), and the lower portion of the liquid extraction pipe (82) is connected to the columnar mounting pipe (1); A vacuum suction cup (83), wherein a vacuum suction cup (83) is provided on the upper side of the liquid extraction tube (82), and the vacuum suction cup (83) is located above the placement rack (71); A first water pump (84), wherein the top of the vacuum suction cup (83) on one side is provided with the first water pump (84), and the first water pump (84) is connected to the liquid extraction pipe (82) on the adjacent side; A first liquid level sensor (85), wherein the first liquid level sensor (85) is provided on the top of the first fixing frame (72) on a side close to the first water pump (84); A second liquid level sensor (86), the second liquid level sensor (86) being provided on the top of the first fixing frame (72) on a side away from the first water pump (84); A second water pump (87), a second water pump (87) is provided on the top of the vacuum suction cup (83) on the other side, and the second water pump (87) is connected to the liquid extraction pipe (82) on the adjacent side; A first pressure sensor (88), the first electric push rod (3) is provided with the first pressure sensor (88), and the first pressure sensor (88) cooperates with the piston (4); It also includes a stabilizing mechanism (9), which includes: A second pressure sensor (91), wherein the second pressure sensor (91) is disposed on the top of the placement rack (71); A fifth fixing frame (92), a fifth fixing frame (92) is provided on the upper outer portion of the first fixing frame (72); A second electric push rod (93), the fifth fixing frame (92) is provided with the second electric push rod (93); An arc-shaped clamp (94), the telescopic rod of the second electric push rod (93) being connected to the arc-shaped clamp (94); A second contact switch (95), wherein the columnar mounting tube (1) is provided with a second contact switch (95); The invention also includes a filtering mechanism (10), wherein the filtering mechanism (10) includes: A sixth fixing frame (101), wherein the first fixing frame (72) is provided with the sixth fixing frame (101); Fixed rods (102), two fixed rods (102) are provided outside the sixth fixed frame (101); A movable plate (103) is slidably connected between two adjacent fixed rods (102); A first spring (104), wherein the fixing rod (102) is provided with the first spring (104), and the first spring (104) is connected between the sixth fixing frame (101) and the movable plate (103); A fixed block (105), wherein the top of the movable plate (103) is provided with a fixed block (105); A rotating telescopic rod (106), wherein the two sixth fixing frames (101) and the columnar mounting tube (1) are both rotatably connected with the rotating telescopic rod (106), and the rotating telescopic rod (106) is rotatably connected to the fixing block (105); A fixing plate (107), wherein the first fixing frame (72) is provided with a fixing plate (107); A movable filter plate (108) is slidably provided on the fixed plate (107), and the movable filter plate (108) is rotatably connected to the rotating telescopic rod (106).

2. A portable sewage sampling device as claimed in claim 1, characterized in that: The device further comprises a cleaning mechanism (11), wherein the cleaning mechanism (11) comprises: A wedge-shaped block (111), wherein a wedge-shaped block (111) is provided on the upper outer side of the movable filter plate (108); A seventh fixing frame (112), two seventh fixing frames (112) are provided on the columnar mounting tube (1); A slide bar (115), a slide bar (115) is slidably provided inside the seventh fixed frame (112); A special-shaped rod (113), a special-shaped rod (113) is provided at the bottom of the slide rod (115), and the special-shaped rod (113) cooperates with the wedge block (111); A cleaning brush (114), a cleaning brush (114) is provided on the outside of the special-shaped rod (113), and the cleaning brush (114) cooperates with the movable filter plate (108); A second spring (116) is provided on the slide bar (115), and the second spring (116) is connected between the slide bar (115) and the seventh fixing frame (112).

3. A portable sewage sampling device as claimed in claim 2, characterized in that: The device also includes a refrigeration mechanism (12), wherein the refrigeration mechanism (12) includes: Connecting rods (121), two connecting rods (121) are provided on the placement frame (71); A first semiconductor refrigeration plate (122), wherein the first semiconductor refrigeration plate (122) is connected between two connecting rods (121) on one side; A first temperature sensor (123), wherein the first semiconductor cooling sheet (122) is provided with the first temperature sensor (123); A second semiconductor refrigeration plate (124), wherein the second semiconductor refrigeration plate (124) is connected between the two connecting rods (121) on the other side; A second temperature sensor (125) is provided on the second semiconductor cooling plate (124).

4. A portable sewage sampling device as claimed in claim 3, characterized in that: The device also comprises a control box (6). The control box (6) is fixedly connected to the upper side of the columnar mounting tube (1). A storage battery, a control module and a power module are installed in the control box (6). The switching power supply supplies power to the portable sampling device for sewage detection. The output end of the switching power supply is electrically connected to the power module. The power module is connected to a main power switch via a line. The control module and the power module are electrically connected. The control module is connected to a DS1302 clock circuit and a 24C02 circuit. The first contact switch (5) and the second contact switch (95) are both electrically connected to the control module. The first liquid level sensor (85) and the second liquid level sensor (86) are electrically connected to the control module, the first pressure sensor (88) and the second pressure sensor (91) are electrically connected to the control module, the first temperature sensor (123) and the second temperature sensor (125) are electrically connected to the control module, the first electric push rod (3) and the second electric push rod (93) are connected to the control module through a relay control module, the first semiconductor refrigeration plate (122) and the second semiconductor refrigeration plate (124) are connected to the control module through a relay control module, and the first water pump (84) and the second water pump (87) are connected to the control module through a relay control module.

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