Sampling device and water quality detection equipment

Abstract

The invention discloses a sampling device and water quality detection equipment, the sampling device comprises a buoyancy disc, a sampling assembly, a filtering assembly and a position adjusting assembly, the sampling assembly comprises a water inlet pipe, a water storage tank, a first water pump, a plurality of sampling barrels and a sampling pipe, and the water inlet pipe penetrates through the buoyancy disc; comprising an upper-section pipe sleeved with a water storage tank and a lower-section pipe provided with at least one water inlet hole, and the multiple sampling barrels are distributed between the water storage tank and the buoyancy disc, can rotate relative to the buoyancy disc and are connected with one of the water storage tank and the multiple sampling barrels; the filter assembly comprises a first filter screen which sleeves the periphery of the lower-section pipe and can move relative to the water inlet pipe; the position adjusting assembly comprises a first supporting ring, a corrugated pipe and a first driving part, the first supporting ring is arranged at an opening of the first filter screen, the corrugated pipe is arranged on the periphery of the lower section pipe in a sleeving mode and fixedly connected with the buoyancy disc and the first supporting ring, and the first driving part is in driving connection with the first supporting ring; therefore, the water inlet pipe is prevented from being blocked, and water sampling in water quality areas with different depths is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality detection, and in particular to a sampling device and water quality detection equipment. Background Art

[0002] The scope of water quality testing is very wide, including unpolluted and polluted natural water (rivers, lakes, seas) and various industrial drainage. The main monitoring items can be divided into two categories: one is the comprehensive indicators reflecting the water quality, such as temperature, color, turbidity, pH value, conductivity, suspended solids, dissolved oxygen, chemical oxygen demand and biochemical oxygen demand; the other is some toxic substances, such as phenol, cyanide, arsenic, lead, chromium, cadmium, mercury and organic pesticides. Water sampling is an important part of water quality testing. Through the comprehensive analysis of the water and sludge test results, it is more conducive to grasping and judging the real pollution of the water.

[0003] The sampling device in the existing water quality testing equipment can sample water in a single depth area, but it is not convenient to sample water in different depth areas. In addition, some impurities may be sucked in during the sampling process, resulting in pipe blockage or differences in water quality test results. Summary of the invention

[0004] The main purpose of the present invention is to provide a sampling device and a water quality detection equipment, aiming to solve the above-mentioned problems of inconvenience in sampling water in different depth areas and easy inhalation of impurities during the sampling process.

[0005] To achieve the above object, a sampling device proposed by the present invention comprises:

[0006] Buoyancy disc;

[0007] The sampling assembly comprises a water inlet pipe, a water storage tank, a first water pump, a plurality of sampling barrels and a sampling pipe, wherein the water inlet pipe penetrates the buoyancy disk in the up-down direction and comprises an upper pipe located on the upper side of the buoyancy disk and a lower pipe located on the lower side of the buoyancy disk, the upper pipe is fixedly connected to the buoyancy disk, and the water storage tank is connected to its outer sleeve and is connected to the water storage tank through the water pump, the lower pipe is used to be inserted into the water quality area to be tested, and at least one water inlet hole is opened to allow water in the water quality area to be tested to flow into the water inlet pipe, the lower port of the lower pipe is sealed, a plurality of sampling barrels are arranged between the water storage tank and the buoyancy disk, and are spaced apart along the periphery of the water inlet pipe, the sampling pipe is fixedly connected to the water inlet pipe and can rotate relative to the buoyancy disk, one end of the sampling pipe is connected to the water storage tank, and the other end is connected to one of the plurality of sampling barrels to inject the water in the water storage tank into one of the sampling barrels;

[0008] A filter assembly, comprising a first filter screen sleeved on the outer periphery of the lower tube, wherein the outer contour of the first filter screen is semicircular and its opening is upwardly disposed, the first filter screen can move in an up-and-down direction relative to the water inlet pipe, and the water inlet hole is located between the buoyancy disk and the bottom end of the first filter screen; and,

[0009] A position adjustment assembly includes a first support ring, a bellows and a first drive member, wherein the first support ring is arranged at the opening of the first filter screen, the bellows is sleeved on the outer periphery of the lower tube, and its upper end is fixedly connected to the buoyancy disk, and its lower end is fixedly connected to the first support ring, and the first drive member is drivingly connected to the first support ring to drive the first support ring to move in the up and down directions, so that the first support ring drives the first filter screen to move in the up and down directions and drives the bellows to extend and retract in the up and down directions.

[0010] Optionally, the upper tube section includes a first tube portion and a second tube portion, and the second tube portion is rotatably sleeved on the lower end of the first tube portion and connected to the lower tube section;

[0011] The sampling assembly also includes:

[0012] A mounting plate is sleeved outside the second pipe portion and fixedly connected to the second pipe portion, and a plurality of sampling barrels are arranged on the mounting plate; and,

[0013] The intermittent drive structure is arranged on the lower side of the mounting plate, and includes a first transmission gear, a second transmission gear, an intermittent transmission gear, a transmission shaft and a second driving member. The second transmission gear and the intermittent transmission gear are sleeved on the outside of the second tube portion, and the intermittent transmission gear is arranged above the second transmission gear and fixedly connected to the mounting plate. The first transmission gear is arranged beside the second transmission gear and is adapted to mesh with the second transmission gear. The transmission shaft is arranged on the first transmission gear and is used to mesh with the intermittent transmission gear when it rotates to a preset position under the action of the first transmission gear, so as to drive the intermittent transmission gear to rotate, so that the intermittent transmission gear drives the mounting plate to rotate, and the second driving member is drivingly connected to the first transmission gear to drive the first transmission gear to rotate.

[0014] Optionally, the barrel opening of each sampling barrel is sealed with a rubber plug;

[0015] The upper end of the sampling tube is connected to the water storage tank through a water delivery pipe, and the lower end of the sampling tube has a needle tip;

[0016] The sampling assembly also includes a second water pump and a third driving member. The second water pump is connected to the water supply pipe and is used to transport the water in the water tank to the sampling tube. The third driving member is drivingly connected to the sampling tube and is used to drive the sampling tube to move in the up and down directions so that the needle tip can pass through the rubber stopper and move inside and outside the sampling barrel.

[0017] Optionally, the sampling assembly further comprises:

[0018] A fixing rod, located above the sampling barrel, with its connecting end fixedly connected to the upper tube, and its stopping end sleeved on the outer periphery of the sampling tube;

[0019] a limiting ring, arranged below the stop end and corresponding to the sampling barrel; and,

[0020] At least one first elastic member is disposed between the stop end and the limiting ring.

[0021] Optionally, the sampling assembly further comprises a fixed plate, which is arranged above the mounting plate and sleeved outside the upper tube, and has a plurality of through holes corresponding to the plurality of sampling barrels, so that the plurality of sampling barrels can be inserted one by one.

[0022] Optionally, the filter assembly further includes a pulverizer, which is located below the first filter screen and fixedly connected to the lower tube.

[0023] Optionally, the pulverizer includes a rotating shaft and a plurality of blades. The rotating shaft is sleeved outside the lower tube and can rotate around its axis relative to the lower tube. The plurality of blades are arranged on the outer periphery of the rotating shaft and are distributed at intervals along the circumference of the rotating shaft.

[0024] Optionally, the filter assembly further comprises a second filter screen, the second filter screen is sleeved on the outer periphery of the first filter screen and is fixedly connected to the first support ring, the cross section of the second filter screen is circular, and is gradually expanded from the upper end to the lower end, and the filter hole size of the second filter screen is larger than the filter hole size of the first filter screen;

[0025] The pulverizer is arranged in the second filter screen.

[0026] Optionally, the filtering component further comprises:

[0027] a second support ring, which is sleeved outside the lower end tube and is located between the water inlet hole and the bottom end of the first filter screen; and,

[0028] At least one second elastic member, the second elastic member is located between the second support ring and the bottom end of the first filter screen and is extended in the up-down direction, and the upper end of the second elastic member is fixedly connected to the second support ring.

[0029] The present invention also provides a water quality detection device, including a sampling device;

[0030] Wherein, the sampling device comprises:

[0031] Buoyancy disc;

[0032] The sampling assembly comprises a water inlet pipe, a water storage tank, a first water pump, a plurality of sampling barrels and a sampling pipe, wherein the water inlet pipe penetrates the buoyancy disk in the up-down direction and comprises an upper pipe located on the upper side of the buoyancy disk and a lower pipe located on the lower side of the buoyancy disk, the upper pipe is fixedly connected to the buoyancy disk, and the water storage tank is connected to its outer sleeve and is connected to the water storage tank through the water pump, the lower pipe is used to be inserted into the water quality area to be tested, and at least one water inlet hole is opened to allow water in the water quality area to be tested to flow into the water inlet pipe, the lower port of the lower pipe is sealed, a plurality of sampling barrels are arranged between the water storage tank and the buoyancy disk, and are spaced apart along the periphery of the water inlet pipe, the sampling pipe is fixedly connected to the water inlet pipe and can rotate relative to the buoyancy disk, one end of the sampling pipe is connected to the water storage tank, and the other end is connected to one of the plurality of sampling barrels to inject the water in the water storage tank into one of the sampling barrels;

[0033] A filter assembly, comprising a first filter screen sleeved on the outer periphery of the lower tube, wherein the outer contour of the first filter screen is semicircular and its opening is upwardly disposed, the first filter screen can move in an up-and-down direction relative to the water inlet pipe, and the water inlet hole is located between the buoyancy disk and the bottom end of the first filter screen; and,

[0034] A position adjustment assembly includes a first support ring, a bellows and a first drive member, wherein the first support ring is arranged at the opening of the first filter screen, the bellows is sleeved on the outer periphery of the lower tube, and its upper end is fixedly connected to the buoyancy disk, and its lower end is fixedly connected to the first support ring, and the first drive member is drivingly connected to the first support ring to drive the first support ring to move in the up and down directions, so that the first support ring drives the first filter screen to move in the up and down directions and drives the bellows to extend and retract in the up and down directions.

[0035] In the technical solution of the present invention, the sampling device includes a filtering assembly. Under the action of the first water pump, the water in the water quality area to be detected is first filtered by the first filter screen and then flows into the corrugated tube, and then flows into the water inlet pipe and the water storage tank in sequence through the water inlet hole. The water in the water storage tank is then injected into the sampling barrel through the sampling tube to complete water sampling. In this way, the impurities in the water are filtered by the first filter screen, which can avoid the blockage of the water inlet pipe during water sampling and can greatly reduce the impurities in the water, which is beneficial to improve the accuracy of the water quality detection results. The sampling device also includes a position adjustment assembly, which drives the first support ring to move in the up and down direction through the first driving member, thereby driving the first filter screen to move in the up and down direction, adjusting the depth of the first filter screen in the water quality area to be detected, thereby realizing water sampling of water quality areas with different depths, greatly improving the practicality of the sampling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0037] Figure 1 A schematic structural diagram of an embodiment of a sampling device provided by the present invention;

[0038] Figure 2 for Figure 1 Exploded diagram of

[0039] Figure 3 for Figure 1 Exploded diagram of some structures;

[0040] Figure 4 for Figure 1 A schematic diagram of a portion of the structure of the sampling assembly;

[0041] Figure 5 for Figure 4 Schematic diagram of some structures in ;

[0042] Figure 6 for Figure 1 Structural diagram of the intermittent drive structure;

[0043] Figure 7 for Figure 1 Schematic diagram of part of the structure.

[0044] Description of Figure Numbers:

[0045]

[0046]

[0047] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0050] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0051] The scope of water quality testing is very wide, including unpolluted and polluted natural water (rivers, lakes, seas) and various industrial drainage. The main monitoring items can be divided into two categories: one is the comprehensive indicators reflecting the water quality, such as temperature, color, turbidity, pH value, conductivity, suspended solids, dissolved oxygen, chemical oxygen demand and biochemical oxygen demand; the other is some toxic substances, such as phenol, cyanide, arsenic, lead, chromium, cadmium, mercury and organic pesticides. Water sampling is an important part of water quality testing. Through the comprehensive analysis of the water and sludge test results, it is more conducive to grasping and judging the real pollution of the water.

[0052] The sampling device in the existing water quality testing equipment can sample water in a single depth area, but it is not convenient to sample water in different depth areas, and during the sampling process, some impurities may be sucked in, causing pipe blockage or differences in water quality test results.

[0053] In view of this, the present invention provides a sampling device 100, Figures 1 to 7 This is an embodiment of a sampling device 100 provided by the present invention.

[0054] See also Figures 1 to 3 The sampling device 100 includes a buoyancy disk 1, a sampling assembly 2, a filtering assembly 3 and a position adjustment assembly 4. The sampling assembly 2 includes a water inlet pipe 21, a water storage tank 22, a first water pump, a plurality of sampling barrels 23 and a sampling tube 24. The water inlet pipe 21 passes through the buoyancy disk 1 in the up-down direction, and includes an upper section pipe 211 located on the upper side of the buoyancy disk 1 and a lower section pipe 212 located on the lower side of the buoyancy disk 1. The upper section pipe 211 is fixedly connected to the buoyancy disk 1, and the outer sleeve is connected to the water storage tank 22, and is connected to the water pump through the water pump. The water storage tank 22 is connected, the lower pipe 212 is used to be inserted in the water quality area to be detected, and is provided with at least one water inlet hole 2121, so that the water in the water quality area to be detected can flow into the water inlet pipe 21, the lower end of the lower pipe 212 is sealed, a plurality of sampling barrels 23 are arranged between the water storage tank 22 and the buoyancy disk 1, and are distributed at intervals along the periphery of the water inlet pipe 21, the sampling tube 24 is fixedly connected to the water inlet pipe 21, and can rotate relative to the buoyancy disk 1, and one end of the sampling tube 24 is connected to the water storage tank 22, The other end is connected to one of the plurality of sampling barrels 23 to inject the water in the water storage tank 22 into one of the sampling barrels 23; the filtering assembly 3 includes a first filter screen 31 sleeved on the outer periphery of the lower tube 212, the outer contour of the first filter screen 31 is semicircular, and its opening is upwardly arranged, the first filter screen 31 can move in the up and down directions relative to the water inlet pipe 21, and the water inlet hole 2121 is located between the buoyancy disk 1 and the bottom end of the first filter screen 31; the position adjustment assembly 4 includes a first support ring 41, a bellows 4 2 and a first driving member 43, the first support ring 41 is arranged at the opening of the first filter screen 31, the bellows 42 is sleeved on the outer periphery of the lower tube 212, and its upper end is fixedly connected to the buoyancy disk 1, and its lower end is fixedly connected to the first support ring 41, the first driving member 43 is drivingly connected to the first support ring 41 to drive the first support ring 41 to move in the up and down directions, so that the first support ring 41 drives the first filter screen 31 to move in the up and down directions and drives the bellows 42 to extend and retract in the up and down directions.

[0055] In the technical solution of the present invention, the sampling device 100 includes a filtering component 3. Under the action of the first water pump, the water in the water quality area to be detected is first filtered by the first filter 31 and then flows into the bellows 42, and then flows into the water inlet pipe 21 and the water storage tank 22 in sequence through the water inlet hole 2121. The water in the water storage tank 22 is then injected into the sampling barrel 23 through the sampling tube 24 to complete water sampling. In this way, the impurities in the water are filtered by the first filter 31, which can avoid the blockage of the water inlet pipe 21 during water sampling, and can greatly reduce the impurities in the water, which is beneficial to improve the accuracy of the water quality detection results. The sampling device 100 also includes a position adjustment component 4, which drives the first support ring 41 to move in the up and down direction through the first driving member 43, thereby driving the first filter 31 to move in the up and down direction, adjusting the depth of the first filter 31 in the water quality area to be detected, thereby realizing water sampling of water quality areas with different depths, greatly improving the practicality of the sampling device 100.

[0056] It should be noted that, in the present invention, the configuration of the first driving member 43 is not limited, and may be a motor, a cylinder, an electric push rod, etc. More specifically, in one embodiment of the present invention, the first driving member 43 is a cylinder.

[0057] For details, please refer to Figure 2 , Figure 3 and Figure 6The upper tube 211 includes a first tube portion 2111 and a second tube portion 2112, the second tube portion 2112 is rotatably sleeved on the lower end of the first tube portion 2111 and connected to the lower tube 212; the sampling assembly 2 also includes a mounting plate 25 and an intermittent drive structure 26, the mounting plate 25 is sleeved outside the second tube portion 2112 and is fixedly connected to the second tube portion 2112, and a plurality of sampling barrels 23 are arranged on the mounting plate 25; the intermittent drive structure 26 is arranged on the lower side of the mounting plate 25, and includes a first transmission gear 261, a second transmission gear 262, an intermittent transmission gear 263, a transmission shaft 264 and a second driving member 265, the second transmission gear 262 and the intermittent transmission gear 263 sleeve It is arranged outside the second tube portion 2112, and the intermittent transmission gear 263 is arranged above the second transmission gear 262 and is fixedly connected to the mounting plate 25. The first transmission gear 261 is arranged beside the second transmission gear 262 and is adapted to mesh with the second transmission gear 262. The transmission shaft 264 is arranged on the first transmission gear 261 and is used to mesh with the intermittent transmission gear 263 when the first transmission gear 261 rotates to a preset position under the action of the first transmission gear 261, so as to drive the intermittent transmission gear 263 to rotate, so that the intermittent transmission gear 263 drives the mounting plate 25 to rotate, and the second driving member 265 is drivingly connected to the first transmission gear 261 to drive the first transmission gear 261 to rotate.

[0058] In this way, the second driving member 265 drives the first transmission gear 261 to drive the second transmission gear 262 to rotate, the first tube 2111, the intermittent transmission gear 263 and the mounting plate 25 are fixed, and the second tube 2112 rotates relative to the first tube 2111. When the transmission shaft 264 rotates to the preset position at a certain moment, the transmission shaft 264 meshes with the intermittent transmission gear 263, thereby driving the intermittent transmission gear 263 to rotate, so that the intermittent transmission gear 263 is rotated. 3 drives the mounting plate 25 to rotate until the transmission shaft 264 drives the intermittent transmission gear 263 to rotate a certain preset angle, so that the sampling tube 24 corresponds to another sampling barrel 23, and then the transmission shaft 264 is separated from the intermittent transmission gear 263, the intermittent transmission gear 263 stops, and then the mounting plate 25 stops, so that the sampling tube 24 can fill water into the sampling barrel 23; in this way, the mounting plate 25 can be intermittently rotated, so that the sampling tube 24 can fill water into multiple sampling barrels 23.

[0059] It should be noted that, in the present invention, the second driving member 265 is not limited in its configuration, and may be a motor, or a cylinder, etc. More specifically, in an embodiment of the present invention, the second driving member 265 is a motor.

[0060] Furthermore, the first tube portion 2111 and the second tube portion 2112 are rotatably connected via a bearing.

[0061] For details, please refer to Figures 1 to 5 , a rubber stopper 231 is provided at the barrel mouth of each sampling barrel 23 for sealing; the upper end of the sampling tube 24 is connected to the water storage tank 22 through a water pipe, and the lower end of the sampling tube 24 has a needle tip 241; the sampling assembly 2 also includes a second water pump and a third driving member 27, the second water pump is connected to the water pipe, and is used to transport the water in the water storage tank 22 to the sampling tube 24, and the third driving member 27 is drivingly connected to the sampling tube 24, and is used to drive the sampling tube 24 to move in the up and down directions, so that the needle tip 241 can pass through the rubber stopper 231 and move inside and outside the sampling barrel 23; the sampling barrel 23 is sealed and filled to avoid water pollution and affect the detection results.

[0062] It should be noted that, in the present invention, the third driving member 27 is not limited in its configuration, and may be a motor, or a cylinder, etc. More specifically, in an embodiment of the present invention, the third driving member 27 is a cylinder.

[0063] For further information, see Figures 1 to 5 The sampling assembly 2 also includes a fixing rod 28, a limiting ring 29 and at least one first elastic member 2A. The fixing rod 28 is located above the sampling barrel 23, and its connecting end is fixedly connected to the upper tube 211, and its stop end is sleeved on the outer periphery of the sampling tube 24; the limiting ring 29 is arranged on the lower side of the stop end and is arranged corresponding to the sampling barrel 23; the first elastic member 2A is arranged between the stop end and the limiting ring 29.

[0064] In this way, when the sampling tube 24 completes the injection of water into the sampling barrel 23, the third driving member 27 drives the sampling tube 24 to reset. At this time, the sampling tube 24 will drive the rubber plug 231 of the sampling barrel 23 to move upward, so that the rubber plug 231 drives the limiting ring 29 to move upward, and the first elastic member 2A is compressed by the limiting ring 29 to generate elastic force until the limiting ring 29 abuts against the fixing rod 28, thereby interfering with the movement of the rubber plug 231 through the fixing rod 28, until the sampling tube 24 is completely withdrawn from the sampling barrel 23, the rubber plug 231 moves downward under the elastic force of the first elastic member 2A to achieve reset, thereby ensuring the sealing of the sampling barrel 23.

[0065] It should be noted that, in the present invention, the first elastic member 2A may be a spring, or a rubber strip, etc. At the same time, the number of the first elastic member 2A is not limited. Specifically, in one embodiment of the present invention, the first elastic member 2A is a spring, and five of them are provided, which are evenly spaced and distributed along the circumference of the limiting ring 29, so that the rubber plug 231 is evenly stressed.

[0066] For further information, see Figures 2 to 4 The sampling assembly 2 further includes a fixing plate 2B, which is disposed above the mounting plate 25 and sleeved outside the upper tube 211, and has a plurality of through holes corresponding to the plurality of sampling barrels 23, so that the plurality of sampling barrels 23 can be inserted one by one. In this way, the rotation stability of the sampling barrels 23 is improved.

[0067] For details, please refer to Figure 1 and Figure 2 The sampling device 100 further includes a supporting shell 5 , which is disposed on the buoyancy disk 1 and sleeved on the outer periphery of the sampling component 2 .

[0068] For further information, see Figure 2 and Figure 3 In one embodiment of the present invention, a bottom plate 221 is disposed on the outer shell of the upper tube 211 , and the bottom plate 221 and the supporting shell 5 together form the water storage tank 22 .

[0069] Specifically, the filter assembly 3 also includes a pulverizer 32, which is located below the first filter screen 31 and fixedly connected to the lower tube 212; in this way, during the water absorption process of the water inlet pipe 21, larger debris flowing nearby is prevented from being absorbed and colliding with the sampling device 100, causing damage to the sampling device 100, thereby extending the service life of the sampling device 100.

[0070] For further information, see Figure 2 and Figure 7 In one embodiment of the present invention, the pulverizer 32 includes a rotating shaft 321 and a plurality of blades 322. The rotating shaft 321 is sleeved outside the lower tube 212 and can rotate around its axis relative to the lower tube 212. The plurality of blades 322 are arranged on the outer periphery of the rotating shaft 321 and are distributed at intervals along the circumference of the rotating shaft 321.

[0071] Furthermore, the rotation of the rotating shaft 321 is realized by a fourth driving member. In the present invention, the fourth driving member is not limited in its configuration, and can be a motor, a cylinder, or the like. More specifically, based on the above, "the upper tube 211 includes a first tube portion 2111 and a second tube portion 2112, the second tube portion 2112 is rotatably sleeved on the lower end of the first tube portion 2111 and connected to the lower tube 212; the sampling assembly 2 also includes a mounting disk 25 and an intermittent drive structure 26, the mounting disk 25 is sleeved outside the second tube portion 2112 and is fixedly connected to the second tube portion 2112, and a plurality of sampling barrels 23 are arranged on the mounting disk 25; the intermittent drive structure 26 is arranged on the lower side of the mounting disk 25, and includes a first transmission gear 261, a second transmission gear 262, an intermittent transmission gear 263, a transmission shaft 264 and a second driving member 265, the second transmission gear 262 and the intermittent transmission gear 263 are sleeved outside the second tube portion 2112, and the intermittent transmission gear 263 is arranged above the second transmission gear 262 and is connected to the The mounting plate 25 is fixedly connected, the first transmission gear 261 is arranged beside the second transmission gear 262, and is adapted to mesh with the second transmission gear 262, the transmission shaft 264 is arranged on the first transmission gear 261, and is used to mesh with the intermittent transmission gear 263 when the first transmission gear 261 rotates to a preset position, so as to drive the intermittent transmission gear 263 to rotate, so that the intermittent transmission gear 263 drives the mounting plate 25 to rotate, and the second driving member 265 is drivingly connected to the first transmission gear 261 to drive the first transmission gear 261 to rotate. In this embodiment, the fourth driving member is the lower section tube 212, and the second transmission gear 262 is driven to rotate by the first transmission gear 261, so that the second transmission gear 262 drives the lower section tube 212 to rotate, thereby realizing the rotation of the rotating shaft 321, streamlining the structure, and reducing the cost.

[0072] For details, please refer to Figures 1 to 3 The filter assembly 3 also includes a second filter screen, which is sleeved on the outer periphery of the first filter screen 31 and fixedly connected to the first support ring 41. The cross section of the second filter screen is circular, and is gradually expanded from the upper end to the lower end. The filter hole size of the second filter screen 33 is larger than the filter hole size of the first filter screen 31; the pulverizer 32 is arranged in the second filter screen. In this way, the water in the water quality area to be tested is filtered twice by the second filter screen 33 and the first filter screen 31 in sequence before entering the bellows 42, which greatly reduces the debris in the water and improves the detection accuracy. At the same time, the second filter screen 33 also blocks larger debris.

[0073] For details, please refer to Figure 2and Figure 7 The filter assembly 3 also includes a second support ring 34 and at least one second elastic member 35. The second support ring 34 is sleeved outside the lower tube 212 and is located between the water inlet hole 2121 and the bottom end of the first filter screen 31; the second elastic member 35 is located between the second support ring 34 and the bottom end of the first filter screen 31, and is extended in the up and down directions. The upper end of the second elastic member 35 is fixedly connected to the second support ring 34.

[0074] In this way, the second elastic member 35 can be extended and retracted in the up and down directions under the joint action of the first filter screen 31 and the first support ring 41. Specifically, when water sampling is performed, the water inlet pipe 21 sucks water from the water quality area to be detected under the action of the first water pump. At this time, the first filter screen 31 is also affected by the suction force, and the bottom end of the first filter screen 31 moves upward to compress the second elastic member 35. After the water sampling is completed, the bottom end of the first filter screen 31 is reset under the elastic force of the second elastic member 35. At the same time, the first filter screen 31 will shake, thereby cleaning up the debris attached to the first filter screen 31 to avoid clogging of the filter holes of the first filter screen 31 and affecting subsequent water sampling.

[0075] It should be noted that, in the present invention, the number of the second elastic members 35 is not limited. Furthermore, in one embodiment of the present invention, four second elastic members 35 are provided, and the four second elastic members 35 are distributed at intervals around the circumference of the lower tube 212, so that the first filter screen 31 is evenly stressed.

[0076] For further information, see Figure 2 and Figure 7 In one embodiment of the present invention, the second elastic member 35 is a spring.

[0077] Specifically, in one embodiment of the present invention, the second support ring 34 is made of rubber material.

[0078] Specifically, a rope is connected to the buoyancy disk 1 to facilitate the staff to put or retrieve the sampling device 100 into the water quality area to be tested.

[0079] The present invention also provides a water quality detection device, including a sampling device 100. It should be noted that the sampling device 100 adopts the sampling device 100 described above, that is, the water quality detection device has all the technical features of all the embodiments of the sampling device 100 described above, and also has all the technical effects brought by all the technical features, which will not be described one by one here.

[0080] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A sampling device, characterized in that: The sampling device comprises: Buoyancy disc; The sampling assembly comprises a water inlet pipe, a water storage tank, a first water pump, a plurality of sampling barrels and a sampling pipe, wherein the water inlet pipe penetrates the buoyancy disk in the up-down direction and comprises an upper pipe located on the upper side of the buoyancy disk and a lower pipe located on the lower side of the buoyancy disk, the upper pipe is fixedly connected to the buoyancy disk, and the water storage tank is connected to its outer sleeve and is connected to the water storage tank through the water pump, the lower pipe is used to be inserted into the water quality area to be tested, and at least one water inlet hole is opened to allow water in the water quality area to be tested to flow into the water inlet pipe, the lower port of the lower pipe is sealed, a plurality of sampling barrels are arranged between the water storage tank and the buoyancy disk, and are spaced apart along the periphery of the water inlet pipe, the sampling pipe is fixedly connected to the water inlet pipe and can rotate relative to the buoyancy disk, one end of the sampling pipe is connected to the water storage tank, and the other end is connected to one of the plurality of sampling barrels to inject the water in the water storage tank into one of the sampling barrels; A filter assembly, comprising a first filter screen sleeved on the outer periphery of the lower tube, wherein the outer contour of the first filter screen is semicircular and its opening is upwardly disposed, the first filter screen can move in an up-and-down direction relative to the water inlet pipe, and the water inlet hole is located between the buoyancy disk and the bottom end of the first filter screen; and, A position adjustment assembly includes a first support ring, a bellows and a first drive member, wherein the first support ring is arranged at the opening of the first filter screen, the bellows is sleeved on the outer periphery of the lower tube, and its upper end is fixedly connected to the buoyancy disk, and its lower end is fixedly connected to the first support ring, and the first drive member is drivingly connected to the first support ring to drive the first support ring to move in the up and down directions, so that the first support ring drives the first filter screen to move in the up and down directions and drives the bellows to extend and retract in the up and down directions.

2. The sampling device according to claim 1, characterized in that The upper tube section includes a first tube portion and a second tube portion, wherein the second tube portion is rotatably sleeved on the lower end of the first tube portion and connected to the lower tube section; The sampling assembly also includes: A mounting plate is sleeved outside the second pipe portion and fixedly connected to the second pipe portion, and a plurality of sampling barrels are arranged on the mounting plate; and, The intermittent drive structure is arranged on the lower side of the mounting plate, and includes a first transmission gear, a second transmission gear, an intermittent transmission gear, a transmission shaft and a second driving member. The second transmission gear and the intermittent transmission gear are sleeved on the outside of the second tube portion, and the intermittent transmission gear is arranged above the second transmission gear and fixedly connected to the mounting plate. The first transmission gear is arranged beside the second transmission gear and is adapted to mesh with the second transmission gear. The transmission shaft is arranged on the first transmission gear and is used to mesh with the intermittent transmission gear when it rotates to a preset position under the action of the first transmission gear, so as to drive the intermittent transmission gear to rotate, so that the intermittent transmission gear drives the mounting plate to rotate, and the second driving member is drivingly connected to the first transmission gear to drive the first transmission gear to rotate.

3. The sampling device according to claim 1 or 2, characterized in that: The barrel opening of each sampling barrel is sealed with a rubber plug; The upper end of the sampling tube is connected to the water storage tank through a water delivery pipe, and the lower end of the sampling tube has a needle tip; The sampling assembly also includes a second water pump and a third driving member. The second water pump is connected to the water supply pipe and is used to transport the water in the water tank to the sampling tube. The third driving member is drivingly connected to the sampling tube and is used to drive the sampling tube to move in the up and down directions so that the needle tip can pass through the rubber stopper and move inside and outside the sampling barrel.

4. The sampling device according to claim 3, characterized in that: The sampling assembly also includes: A fixing rod, located above the sampling barrel, with its connecting end fixedly connected to the upper tube, and its stopping end sleeved on the outer periphery of the sampling tube; A limiting ring is arranged below the stop end and is arranged corresponding to the sampling barrel; and at least one first elastic member is arranged between the stop end and the limiting ring.

5. The sampling device according to claim 2, characterized in that: The sampling assembly also includes a fixed plate, which is arranged above the installation plate and sleeved outside the upper tube, and has a plurality of through holes corresponding to the plurality of sampling barrels, so that the plurality of sampling barrels can be inserted one by one.

6. The sampling device according to claim 1, characterized in that: The filter assembly also includes a pulverizer, which is located below the first filter screen and fixedly connected to the lower tube.

7. The sampling device according to claim 6, characterized in that The pulverizer includes a rotating shaft and a plurality of blades. The rotating shaft is sleeved outside the lower tube and can rotate relative to the lower tube around its axis. The plurality of blades are arranged on the outer periphery of the rotating shaft and are distributed at intervals along the circumference of the rotating shaft.

8. The sampling device according to claim 6, characterized in that: The filter assembly further includes a second filter screen, which is sleeved on the outer periphery of the first filter screen and fixedly connected to the first support ring. The cross section of the second filter screen is circular and gradually expands from the upper end to the lower end. The filter hole size of the second filter screen is larger than the filter hole size of the first filter screen. The pulverizer is arranged in the second filter screen.

9. The sampling device according to claim 1, characterized in that: The filter assembly also includes: a second support ring, which is sleeved outside the lower end tube and is located between the water inlet hole and the bottom end of the first filter screen; and, At least one second elastic member, the second elastic member is located between the second support ring and the bottom end of the first filter screen and is extended in the up-down direction, and the upper end of the second elastic member is fixedly connected to the second support ring.

10. A water quality testing device, characterized in that: Comprising a sampling device as described in any one of claims 1-9.

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