CN111661447B

CN111661447B - A sewage sampling device for agricultural production

Info

Publication number: CN111661447B
Application number: CN202010491994.7A
Authority: CN
Inventors: 杨华
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2022-05-24
Anticipated expiration: 2040-06-03
Also published as: CN111661447A

Abstract

The invention discloses a sewage sampling device for agricultural production, belonging to the field of sewage sampling devices, a sewage sampling device for agricultural production, wherein a refrigerating device continuously releases low-temperature gas, the low-temperature gas rapidly diffuses in all directions through a hollow groove in a top-opening cover body and slowly diffuses in heat-preserving fibers until cold air in the heat-preserving fibers completely diffuses, the structures of the heat-preserving fibers, namely a sealing curtain in a storage hole, and the like are arranged as biological surface fur, so that the heat exchange between a heat-preserving area of a storage box main body and the outside is isolated, the heat-preserving effect of the heat-preserving area in the storage box main body is effectively realized, the power consumption of the refrigerating device is reduced, the sampling and storage of agricultural sewage by technicians can be realized conveniently, meanwhile, the long-time storage of agricultural sewage samples can be realized, and the self propagation of partial active substances in the samples is not easy to cause due to overlong self storage time, the normal detection of the sewage is not easily influenced.

Description

A sewage sampling device for agricultural production

Technical Field

The invention relates to the field of sewage sampling devices, in particular to a sewage sampling device for agricultural production.

Background

The agricultural sewage refers to sewage or liquid substances which are discharged in the processes of crop cultivation, livestock raising, agricultural product processing and the like and affect human health and environmental quality, along with the development of industrial level, the amount of sewage generated in the agricultural production process is increased, meanwhile, the influence on the environment is gradually increased, the harvest of crops is easily affected, particularly, the crops are mostly used as food supply, harmful substances accumulated in the crops polluted by the sewage can generate an enrichment effect in the human body along with a food chain, and the health of people is seriously affected, so the sampling detection and pollution treatment of the agricultural sewage become important components of the agricultural production.

Fur is usually the first line of defense of animal to resist severe cold, no matter live in polar bear of north pole or live in numerous enterprises in south pole, the tight body hair of body surface helps it to keep self body temperature, is difficult for causing the massive emission of heat, need not to consume numerous energy and is used for position body temperature, increases its ability of adapting to the environment.

The traditional agricultural sewage sampling method mainly utilizes simple sampling containers such as plastic bottles and the like to directly sample in an open sampling environment in the open air, and then transfers the sample to a corresponding detection laboratory for detection, because the sampling environment is a relatively open environment originally, the requirement on sampling is relatively low, and meanwhile, the requirement on storage and transfer is relatively low, so that the influence on the detection of common heavy metal ions and other non-active substances is small, but in the agricultural sewage detection, the active substances such as algae are also important indexes for detection, the algae are easy to propagate in the sampling containers by themselves, once the sampling sample is sent to the detection for a long time, the detection result of the active substances is easy to be seriously lost due to the reasons, and the influence on the sewage detection is large.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a sewage sampling device for agricultural production, which can be used for realizing the purposes of facilitating technical personnel to sample and store agricultural sewage, realizing the long-time preservation of an agricultural sewage sample, preventing partial active substances in the sample from automatically propagating due to overlong self-storage time and preventing the normal detection of the sewage from being influenced.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A sewage sampling device for agricultural production comprises a storage box main body and a sampling test tube which are matched with each other, wherein a sealing cover matched with the storage box main body is covered on the storage box main body, a mounting groove is formed in a bottom plate of the storage box main body, a refrigerating device is fixedly connected in the mounting groove, a mounting arc groove is formed in the side wall of the storage box main body in a chiseling mode, a partition plate is placed in the storage box main body and comprises a plate body and an ear block matched with the mounting arc groove and is in sliding connection with the storage box main body through the mounting arc groove and the ear block, a space heat insulation atmosphere area and a placing area in the storage box main body are located in the partition plate, the placing area is located on the upper side of the heat insulation area, a plurality of storage holes are formed in the partition plate and are respectively communicated with the placing area and the heat insulation area, heat insulation fibers are filled in the heat insulation area and comprise a plurality of elastic fibers, and adjacent elastic fiber individuals twine each other together, the spacing platform of fixedly connected with on the lateral wall of deposit hole, the sample test tube is pegged graft at spacing intrabench, be connected with sealed curtain between spacing platform and the sample test tube, and sealed curtain and spacing platform fixed connection can realize making things convenient for technical staff to take a sample the storage to agricultural sewage, can realize long-time preservation to agricultural sewage sample simultaneously, be difficult for causing the partial active material of sample to breed by oneself because of self the latency overlength, be difficult for influencing the normal detection of sewage.

Furthermore, a fixing block is inserted in the mounting arc groove, and an elastic string is fixedly connected between the fixing block and the partition plate, so that the partition plate can be fixed by the fixing block, and the partition plate is not easy to vibrate in the storage box main body.

Further, the sealed cowling has been cup jointed in refrigerating plant's the outside, the sealed cowling includes the cover body, it has a plurality of fretwork grooves to cut on the cover body, and is a plurality of fretwork groove evenly distributed, refrigerating plant includes the refrigeration main part, it has the lateral wall spout to cut on the lateral wall of refrigeration main part, sliding connection has with self assorted limiting slide block in the lateral wall spout, and limiting slide block and cover body fixed connection, and refrigerating plant normal during operation, the cold wind that the refrigeration main part produced can be with the whole jack-up of sealed cowling to through the fretwork groove toward evenly diffusing, make cold wind evenly diffuse in the heat preservation district, increase refrigerating plant's refrigeration effect, and after refrigerating plant stop work, under the effect of self gravity, the sealed cowling can fall down fast, cover refrigerating plant, make refrigerating plant be difficult for being contaminated by the foreign matter.

Further, be equipped with the magnetic path in the lateral wall spout, and magnetic path and refrigeration main part fixed connection, spacing slider chooses for use magnetic rubber to make, has the adsorption affinity between spacing slider and the magnetic path, can firmly adsorb the sealed cowling on the refrigeration device when the refrigeration device is in standby state, is difficult for causing the sealed cowling to rock because of depositing the holistic jolt of case main part, is difficult for influencing the protection effect of sealed cowling.

Further, sealed curtain includes a plurality of fan-shaped curtain pieces, fan-shaped curtain piece includes connecting portion and deformation portion, and connecting portion and spacing platform lateral wall fixed connection, it has the elasticity chamber to chisel in the deformation portion, and the elasticity of the connecting portion self of chiseling the elasticity chamber can increase by a wide margin, and after depositing downthehole sample test tube of inserting, the hole surface is deposited to connecting portion can hug closely, increases the leakproofness of depositing the hole, increases the holistic thermal insulation performance in heat preservation district promptly.

Further, the elastic cavity intussuseption is filled with elastic fiber, and is a plurality of elastic fiber's one end runs through deformation portion and extends to the outside of deformation portion, and elastic fiber between two adjacent fan-shaped curtain pieces entangles each other and is in the same place, increases the leakproofness between two adjacent fan-shaped curtain pieces, and after fan-shaped curtain piece deformation, entangles elastic fiber together and also can guarantee the sealing performance between fan-shaped curtain piece, and pre-buried elastic fiber in deformation portion then can increase the intensity of deformation portion by a wide margin, makes deformation portion be difficult for breaking occur after deformation many times.

Further, it has the outer joint to take a sample the intraductal interpolation of test, and threaded connection between outer joint and the sample test tube, the one end excavation that the sample test tube was kept away from to the outer joint has the bevel connection, the lateral wall excavation of outer joint has the finger groove, and the outer joint can the person of facilitating the use hold the sample test tube, and the excavation of bevel connection makes things convenient for the technical staff to shift sewage sample on the outer joint.

Further, the suspension ball that has placed in the sample test tube with outer joint assorted, the suspension ball is made by elastic rubber, and the suspension ball can suspend in sewage, and the suspension ball also risees gradually along with the sample in vitro sewage liquid level rising in the sample test tube position, until with the sealed sample test tube of outer joint cooperation, and the bottom of the back suspension floater that will take a sample test tube back inversion come-up to the sample test tube again can pour out the sewage sample, makes things convenient for the technical staff sample and shifts temporarily.

Further, fixedly connected with gag lever post in the sample test tube, and sample test tube and gag lever post are with the axial, the one end that the sample test tube was kept away from to the gag lever post runs through the suspension ball, and the suspension ball can freely slide along the gag lever post, the one end threaded connection that the sample test tube was kept away from to the gag lever post has the spacing ring, and the gag lever post can control the range of suspension ball at the intraductal motion of sample test, and when sample test tube tilt range was less, the suspension ball was difficult for taking place the side and moves, was difficult for influencing the leakproofness between suspension ball and the outer joint.

Furthermore, the spacing bench fixedly connected with magnetic ring, fixedly connected with and magnetic ring assorted adsorption ring on the external joint, sample test tube and external joint can make sample test tube comparatively stably peg graft in depositing the downthehole through the adsorption between adsorption ring and the magnetic ring.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

in the using process of the scheme, the refrigerating device continuously releases low-temperature gas, the low-temperature gas quickly diffuses in all directions through the hollow groove in the jacking cover body and slowly diffuses in the heat preservation fiber until cold air in the heat preservation fiber completely diffuses, the heat preservation fiber, namely the structure of the storage hole inner sealing curtain and the like is as same as biological surface fur, the heat exchange between the heat preservation area of the storage box main body and the outside is isolated, the heat preservation effect of the heat preservation area in the storage box main body is effectively realized, the power consumption of the refrigerating device is reduced, when a sampling test tube loaded with a sewage sample is inserted into the storage hole, the sampling test tube and the sealing curtain are tightly attached, the influence on the heat preservation area tightness of the storage box main body when the sampling test tube is inserted is reduced to the maximum extent, the sewage sample in the sampling test tube can be stored in a low-temperature environment, the reproduction rate of active substances in the sewage sample is reduced, reduce the influence to sewage sample detection, and at the in-process of depositing case main part transportation, cold-proof fibre and the sealed curtain isotructure of cold-proof material can be with depositing the vibration that the case main part jolted and cause and conduct each position of self fast again, avoid the vibration to concentrate, reduce the influence to the sample test tube, make sample test tube and sample test tube in the sample test tube be in relatively stable environment, can realize making things convenient for technical staff to take a sample the storage to agricultural sewage, can realize long-time the saving to agricultural sewage sample simultaneously, be difficult for causing the inside partial active material of sample to breed by oneself because of self depositing time overlength, be difficult for influencing the normal detection of sewage.

Drawings

FIG. 1 is a front cross-sectional view of the storage unit of the present invention;

FIG. 2 is a schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic view of the storage device of the present invention with the sealing cover removed;

FIG. 4 is a schematic view of the structure at B in FIG. 3;

FIG. 5 is a top view of the sealing curtain of the present invention;

FIG. 6 is a cross-sectional view of the curtain sheet of the present invention;

FIG. 7 is an exploded view of the principal structure of the sampling tube of the present invention;

FIG. 8 is a front cross-sectional view of a sampling tube of the present invention;

FIG. 9 is a schematic view of a portion of the connection between the sampling tube and the storage device when the sampling tube is inserted into the storage device;

fig. 10 is an exploded view of the main structure of the refrigerating apparatus of the present invention.

The reference numbers in the figures illustrate:

the refrigerator comprises a storage box body 1, a sealing cover 2, a mounting groove 3, a refrigerating device 4, a refrigerating body 401, a side wall sliding groove 402, a sealing cover 5, a cover body 501, a hollow-out groove 502, a limiting slide block 6, a magnetic block 7, an arc mounting groove 8, a partition plate 9, heat insulation fibers 10, a storage hole 11, a limiting table 12, a sealing curtain 13, a fan-shaped curtain sheet 1301, a connecting part 1302, a deformation part 1303, an elastic cavity 1304, elastic fibers 1305, a magnetic ring 14, a sampling test tube 15, a limiting rod 16, a suspension ball 17, a limiting ring 18, an external joint 19, an adsorption ring 20 and a fixing block 21.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-4, a sewage sampling device for agricultural production comprises a storage box main body 1 and a sampling test tube 15 which are matched with each other, a sealing cover 2 matched with the storage box main body 1 is covered on the storage box main body 1, the storage box main body 1 is fixed with the sealing cover 2 through a buckle, a mounting groove 3 is cut on the bottom plate of the storage box main body 1, a refrigerating device 4 is fixedly connected in the mounting groove 3, a mounting arc groove 8 is cut on the side wall of the storage box main body 1, a partition plate 9 is placed in the storage box main body 1, the partition plate 9 comprises a plate body and an ear block matched with the mounting arc groove 8, the partition plate 9 is connected with the storage box main body 1 in a sliding manner through the mounting arc groove 8 and the ear block, the partition plate 9 is used for placing a space atmosphere heat preservation area and a placement area in the storage box main body 1, the placement area is positioned at the upper side of the heat preservation area, a plurality of storage holes 11 are cut on the partition plate 9, and the plurality of storage holes 11 are respectively communicated with the placement area and the heat preservation area, thermal-insulation region intussuseption is filled with cold-proof fibre 10, and cold-proof fibre 10 includes that a plurality of elastic fiber are individual, and adjacent elastic fiber individual intertwine together, deposits spacing platform 12 of fixedly connected with on the lateral wall of hole 11, and sample test tube 15 pegs graft in spacing platform 12, is connected with sealed curtain 13 between spacing platform 12 and the sample test tube 15, and sealed curtain 13 and spacing platform 12 fixed connection.

Wherein be equipped with control terminal in refrigerating plant 4, and the lower extreme of depositing case main part 1 then is equipped with temperature sensor, and temperature sensor and control terminal signal connection, control terminal can be through the real-time temperature control refrigerating plant 4's that temperature sensor detected operating power, because insulation material's such as cold-proof fibre 10 exist, can effectively reduce heat preservation district and external heat exchange, utilize less electric energy to realize the low temperature treatment to the interior storage sample of sample test tube 15, and is special, control terminal and temperature sensor all need the battery to supply power, can realize making things convenient for technical staff to take a sample the storage to agricultural sewage, can realize long-time save to agricultural sewage sample simultaneously, be difficult for causing the partial active material of sample to breed by oneself because of self the dwell time overlength, be difficult for influencing the normal detection of sewage.

Fixed block 21 is inserted in mounting arc groove 8, and an elastic string is fixedly connected between fixed block 21 and partition plate 9, so that partition plate 9 can be fixed by using fixed block 21, normal disassembly of partition plate 9 is not affected, normal cleaning of storage box body 1 is not affected, and partition plate 9 is not easy to vibrate in storage box body 1.

Referring to fig. 2 and 10, a sealing cover 5 is sleeved on the outer side of the refrigerating device 4, the sealing cover 5 includes a cover body 501, a plurality of hollow-out grooves 502 are cut on the cover body 501, the plurality of hollow-out grooves 502 are uniformly distributed, the refrigerating device 4 includes a refrigerating main body 401, a side wall chute 402 is cut on the side wall of the refrigerating main body 401, a limit slider 6 matched with the refrigerating main body is connected in the side wall chute 402 in a sliding manner, and the limit slider 6 is fixedly connected with the cover body 501, when the refrigerating device 4 normally works, cold air generated by the refrigerating main body 401 can jack up the sealing cover 5 as a whole and uniformly diffuse through the hollow-out grooves 502, so that the cold air is uniformly diffused in the heat preservation area, the refrigerating effect of the refrigerating device 4 is increased, and after the refrigerating device 4 stops working, under the effect of its own gravity, the sealing cover 5 can quickly fall down to cover the refrigerating device 4, so that the refrigerating device 4 is not easily contaminated by foreign matters, be equipped with magnetic path 7 in the lateral wall spout 402, and magnetic path 7 and refrigeration main part 401 fixed connection, spacing slider 6 chooses for use magnetic rubber to make, has the adsorption affinity between spacing slider 6 and the magnetic path 7, can firmly adsorb sealed cowling 5 on refrigerating plant 4 when refrigerating plant 4 is in standby state, is difficult for causing sealed cowling 5 to rock because of depositing the holistic jolt of case main part 1, is difficult for influencing the protection effect of sealed cowling 5.

Referring to fig. 5-6, the sealing curtain 13 includes a plurality of fan-shaped curtains 1301, each fan-shaped curtain 1301 includes a connection portion 1302 and a deformation portion 1303, the connection portion 1302 is fixedly connected to a sidewall of the limiting block 12, an elastic cavity 1304 is drilled in the deformation portion 1303, the elasticity of the connection portion 1302 with the elastic cavity 1304 is greatly increased, after the sampling test tube 15 is inserted into the storage hole 11, the connection portion 1302 can be tightly attached to the surface of the storage hole 11 to increase the sealing performance of the storage hole 11, that is, the overall thermal insulation performance of the thermal insulation region is increased, the elastic cavity 1304 is filled with elastic fibers 1305, one end of each elastic fiber 1305 penetrates through the deformation portion 1303 and extends to the outside of the deformation portion 1303, the elastic fibers 1305 between two adjacent fan-shaped curtains 1301 are entangled with each other to increase the sealing performance between two adjacent fan-shaped curtains 1301, and after the fan-shaped curtains 1301 are deformed, the entangled elastic fibers 1305 can also ensure the sealing performance between the fan-shaped curtains 1301, the elastic fibers 1305 embedded in the deformation part 1303 can greatly increase the strength of the deformation part 1303, so that the deformation part 1303 is not easy to break after being deformed for many times.

Referring to fig. 1-8, an external joint 19 is inserted into a sampling test tube 15, the external joint 19 is in threaded connection with the sampling test tube 15, an end of the external joint 19, which is far away from the sampling test tube 15, is cut with a bevel, a finger groove is cut on a side wall of the external joint 19, the external joint 19 can be conveniently held by a user, the cutting of the bevel on the external joint 19 facilitates a technician to transfer a sewage sample, a suspension ball 17 matched with the external joint 19 is placed in the sampling test tube 15, the suspension ball 17 is made of elastic rubber, the suspension ball 17 can be suspended in sewage, the position of the suspension ball 17 in the sampling test tube 15 is gradually raised along with the rise of the sewage liquid level in the sampling test tube 15 until the sampling test tube 15 is sealed by matching with the external joint 19, the suspension ball 17 is floated up to the bottom of the sampling test tube 15 again after the sampling test tube 15 is inverted, the sewage sample can be poured out, the technician can conveniently sample and temporarily transfer, fixedly connected with gag lever post 16 in the sample test tube 15, and sample test tube 15 and gag lever post 16 are with the axial, the one end that sample test tube 15 was kept away from to gag lever post 16 runs through suspension ball 17, and suspension ball 17 can freely slide along gag lever post 16, the one end threaded connection that sample test tube 15 was kept away from to gag lever post 16 has spacing ring 18, gag lever post 16 can control the scope of suspension ball 17 at sample test tube 15 internal motion, when sample test tube 15 range of slope is less, suspension ball 17 is difficult for taking place the side and moves, be difficult for influencing the leakproofness between suspension ball 17 and the external joint 19, fixedly connected with magnetic ring 14 on the spacing platform 12, fixedly connected with and magnetic ring 14 assorted adsorption ring 20 on the external joint 19, sample test tube 15 and external joint 19 can make sample test tube 15 can comparatively stably peg graft in depositing hole 11 through the adsorption between adsorption ring 20 and the magnetic ring 14.

In this scheme, deposit structures such as case body 1, division board 9, sealed curtain 13, gag lever post 16, suspension ball 17 and external joint 19 and all select thermal insulation material to make.

In the using process of the scheme, the refrigerating device 4 continuously releases low-temperature gas, the low-temperature gas quickly diffuses in all directions through the hollow groove 502 after pushing open the cover body 501, and then slowly diffuses in the heat preservation fiber 10 until cold gas in the heat preservation fiber 10 completely diffuses, the heat preservation fiber 10, namely the structure of the sealing curtain 13 in the storage hole 11 and the like is arranged like biological surface fur, so that the heat exchange between the heat preservation area of the storage box body 1 and the outside is isolated, the heat preservation effect of the heat preservation area in the storage box body 1 is effectively realized, the power consumption of the refrigerating device 4 is reduced, when the sampling test tube 15 loaded with a sewage sample is inserted into the storage hole 11, please refer to fig. 9, the sampling test tube 15 is closely attached to the sealing curtain 13, the influence on the heat preservation area tightness of the storage box body 1 when the sampling test tube 15 is inserted is furthest reduced, and the sewage sample in the sampling test tube 15 can be stored in a low-temperature environment, reduce active material and breed metabolic rate in the sewage sample, reduce the influence to sewage sample detection, and deposit the in-process of case main part 1 transportation, thermal-insulated fibre 10 and sealed curtain 13 isotructures for thermal material can be again with depositing the vibration of case main part 1 jolting and leading to each position of self fast to make, avoid the vibration to concentrate, reduce the influence to sample test tube 15, make the sample in sample test tube 15 and the sample test tube 15 be in relatively stable environment, can realize making things convenient for technical staff to take a sample the storage to agricultural sewage, can realize long-time save to agricultural sewage sample simultaneously, be difficult for causing the partial active material of sample to breed by oneself because of self the dwell time overlength, be difficult for influencing the normal detection of sewage.

As described above; are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; those skilled in the art can appreciate that the present invention is not limited to the specific embodiments disclosed herein; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.

Claims

1. The utility model provides a sewage sampling device for agricultural production, is including the case main part of depositing (1) and sample test tube (15) that match each other, its characterized in that: the storage box comprises a storage box body (1), wherein the storage box body (1) is covered with a sealing cover (2) matched with the storage box body, a mounting groove (3) is formed in a bottom plate of the storage box body (1), a refrigerating device (4) is fixedly connected in the mounting groove (3), an installation arc groove (8) is formed in a side wall of the storage box body (1), a partition plate (9) is placed in the storage box body (1), the partition plate (9) comprises a plate body and an ear block matched with the installation arc groove (8), the partition plate (9) is in sliding connection with the storage box body (1) through the installation arc groove (8) and the ear block, the partition plate (9) is used for storing an inner space atmosphere region and a placement region of the storage box body (1), the placement region is located on the upper side of the heat preservation region, a plurality of storage holes (11) are formed in the partition plate (9), and the storage holes (11) are communicated with the placement region and the heat preservation region respectively, the insulation area is filled with insulation fibers (10), the insulation fibers (10) comprise a plurality of elastic fiber individuals, adjacent elastic fiber individuals are wound together, the side wall of the storage hole (11) is fixedly connected with a limiting table (12), the sampling test tube (15) is inserted into the limiting table (12), a sealing curtain (13) is connected between the limiting table (12) and the sampling test tube (15), the sealing curtain (13) is fixedly connected with the limiting table (12), a fixing block (21) is inserted into the installation arc groove (8), an elastic thin rope is fixedly connected between the fixing block (21) and the partition plate (9), a sealing cover (5) is sleeved on the outer side of the refrigerating device (4), the sealing cover (5) comprises a cover body (501), a plurality of hollowed-out grooves (502) are drilled in the cover body (501), and the hollowed-out grooves (502) are uniformly distributed, the refrigerating device (4) comprises a refrigerating main body (401), a side wall sliding groove (402) is formed in the side wall of the refrigerating main body (401), a limiting sliding block (6) matched with the side wall sliding groove (402) is connected in the side wall sliding groove (402) in a sliding mode, the limiting sliding block (6) is fixedly connected with a cover body (501), a magnetic block (7) is arranged in the side wall sliding groove (402), the magnetic block (7) is fixedly connected with the refrigerating main body (401), the limiting sliding block (6) is made of magnetic rubber, adsorption force exists between the limiting sliding block (6) and the magnetic block (7), the sealing curtain (13) comprises a plurality of fan-shaped curtain sheets (1301), each fan-shaped curtain sheet (1301) comprises a connecting portion (1302) and a deformation portion (1303), the connecting portion (1302) is fixedly connected with the side wall of the limiting table (12), an elastic cavity (1304) is formed in the deformation portion (1303), and elastic fibers (1305) are filled in the elastic cavity (1304), a plurality of one end of each elastic fiber (1305) penetrates through the deformation part (1303) and extends to the outer side of the deformation part (1303), the elastic fibers (1305) between two adjacent fan-shaped curtain sheets (1301) are entangled with each other, an external joint (19) is inserted in each sampling test tube (15), the external joint (19) is in threaded connection with the sampling test tubes (15), one end, far away from the sampling test tubes (15), of the external joint (19) is provided with an oblique opening in a chiseled mode, the side wall of each external joint (19) is provided with a finger groove in a chiseled mode, limiting rods (16) are fixedly connected in the sampling test tubes (15), the sampling test tubes (15) and the limiting rods (16) are coaxial, one ends, far away from the sampling test tubes (15), of the limiting rods (16) penetrate through the suspension balls (17), the suspension balls (17) can freely slide along the limiting rods (16), and one ends, far away from the sampling test tubes (15), of the limiting rods (16) are in threaded connection with limiting rings (18), the limiting table (12) is fixedly connected with a magnetic ring (14), and the outer joint (19) is fixedly connected with an adsorption ring (20) matched with the magnetic ring (14).

2. The sewage sampling device for agricultural production of claim 1, wherein: a suspension ball (17) matched with an external joint (19) is placed in the sampling test tube (15), and the suspension ball (17) is made of elastic rubber.