Depth-keeping sampler

Abstract

The invention provides a depth-keeping sampler. The depth-keeping sampler comprises a barrel, a containing space used for containing a water sample is formed in the barrel, and an opening communicated with the containing space is formed in the barrel; the sealing seat is arranged on one side, close to the opening, of the cylinder body; the switch piece is arranged in the sealing seat and is used for controlling connection and disconnection between the opening and the outside; and the threading pipe is connected to the sealing seat, a connecting cable is arranged in the threading pipe in a penetrating mode, one end of the connecting cable extends into the sealing seat to be connected with the switch piece, and the other end of the connecting cable is located outside the threading pipe and communicated with the energy storage control assembly. Through the threading pipe and the sealing seat, isolation between the switch piece and an external sample is guaranteed, the pressure resistance and the waterproof capacity of the switch piece are improved, and it is guaranteed that the water taking process of the depth-keeping sampler is smoothly carried out. The energy storage control assembly can remotely open and close the switch piece and supply energy to the switch piece, and is more suitable for sampling in a field environment.

Description

Technical Field

[0001] The invention relates to the technical field of sampling devices, and in particular to a fixed-depth sampler. Background Art

[0002] The fixed depth sampler usually includes a cylinder, a switch, and a rope connected to the cylinder. When sampling water at a fixed depth, the cylinder is lowered to the corresponding depth through the rope, and the switch is turned on to make the cylinder contact with the external water. The external water enters the cylinder through the opening on the cylinder, and the rope is pulled up to retract the cylinder and obtain the water sample obtained in the cylinder.

[0003] During the lowering of the cylinder, both the cylinder and the switch will be under pressure. The existing switch has a weak pressure bearing capacity, which affects the use of the switch during the water extraction process, and further affects the progress of the water extraction process. Summary of the invention

[0004] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, a fixed-depth sampler is provided. The fixed-depth sampler includes a cylinder, a containing space for containing water samples is provided in the cylinder, and an opening connected to the containing space is provided on the cylinder; a sealing seat, which is provided on a side of the cylinder close to the opening; a switch, which is provided in the sealing seat and is used to control the opening and the outside; and a threading tube, which is connected to the sealing seat, and a connecting cable is passed through the threading tube, one end of the connecting cable extends into the sealing seat and is connected to the switch, and the other end of the connecting cable is located outside the threading tube and is connected to the energy storage control component.

[0005] The fixed-depth sampler provided in the present application ensures the isolation of the switch component from the external sample through the threading tube and the sealing seat, improves the pressure resistance and waterproof ability of the switch component, and ensures the smooth progress of the water sampling process of the fixed-depth sampler. The energy storage control component can realize the remote opening and closing of the switch component and supply energy to the switch component. It does not involve an external power supply or gas source, etc., and is more suitable for sampling in the field environment. By remotely controlling the opening and closing of the switch component, the operator can accurately control the sampling timing to ensure the accuracy and reliability of the sampling. The overall structure of the fixed-depth sampler is simple and compact, which is easy to carry and transport.

[0006] Exemplarily, the wire threading tube is inserted into the cylinder, the wire outlet end of the wire threading tube passes through the bottom of the cylinder and is inserted into the sealing seat, and the wire inlet end of the wire threading tube is located at the top of the cylinder.

[0007] Exemplarily, a first sealing assembly is provided at the connection between the threading tube and the sealing seat, and the first sealing assembly includes at least two of a first sealing ring, a first sealing cylinder, a first sealing gland and a first sealing block.

[0008] The first sealing ring is sleeved outside the threading tube, and the first sealing ring is pressed against the sealing seat;

[0009] The first sealing cylinder is sleeved outside the threading pipe and extends along the extending direction of the threading pipe, and the first sealing cylinder is extruded against the sealing seat;

[0010] The first sealing gland is sleeved outside the threading pipe and located outside the sealing seat. The end of the first sealing gland is extruded against the end of the sealing seat, and a first sealing cavity surrounding the threading pipe is formed inside the first sealing gland;

[0011] The first sealing block is sleeved outside the threading pipe and located inside the sealing seat. At least one first limiting boss is arranged on the outer periphery of the first sealing block.

[0012] Exemplarily, a sealing channel is formed at the bottom and / or top of the cylinder body. The threading pipe passes through the sealing channel. The depth-fixed sampler further includes a second sealing assembly, and the second sealing assembly includes at least two of a second sealing ring, a second sealing cylinder, a second sealing gland and a second sealing block.

[0013] The second sealing ring is sleeved outside the threading pipe, and the second sealing ring is extruded against the sealing channel;

[0014] The second sealing cylinder is sleeved outside the threading pipe and extends along the extending direction of the threading pipe, and the second sealing cylinder is extruded against the sealing channel;

[0015] The second sealing gland is sleeved outside the threading pipe and located outside the cylinder body. The end of the second sealing gland is extruded against the end of the cylinder body, and a second sealing cavity surrounding the threading pipe is formed inside the second sealing gland;

[0016] The second sealing block is sleeved outside the threading pipe and located inside the cylinder body. At least one second limiting boss is arranged on the outer periphery of the second sealing block, and the second limiting boss abuts against the cylinder body.

[0017] Exemplarily, the sealing seat and the cylinder body are arranged at intervals, and the outer periphery of the sealing seat does not protrude beyond the outer periphery of the cylinder body.

[0018] Exemplarily, the depth-fixed sampler further includes a sounding rope, the sounding rope is connected to the top of the cylinder body, and the sounding rope and the part of the connecting cable outside the threading pipe are wound around the winding and unwinding assembly together.

[0019] Exemplarily, the winding and unwinding assembly includes a support frame and a winch arranged on the support frame. The sounding rope and the part of the connecting cable outside the threading pipe are sleeved inside a limiting pipe body, and the limiting pipe body together with the internal sounding rope and connecting cable are wound around the winch.

[0020] Exemplarily, a limiting member is further arranged on the support frame to fix the winch.

[0021] Exemplarily, the opening is communicated with a water inlet pipe, the water inlet pipe passes through the sealing seat, and a filtering assembly is connected to the end of the water inlet pipe far away from the opening.

[0022] Exemplarily, the filtering component includes a housing and a filter element disposed within the housing. An inlet space communicating with the outside is formed within the filter element, and an outlet space communicating with the inlet pipe is formed between the filter element and the housing.

[0023] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description section. The Summary of the Invention is not intended to attempt to define the key features and essential technical features of the claimed technical solution, nor is it intended to attempt to determine the protection scope of the claimed technical solution.

[0024] The advantages and features of the present invention will be described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following drawings of the present invention are hereby incorporated as part of the present invention for understanding the present invention. The embodiments and descriptions thereof of the present invention are shown in the drawings to explain the principles of the present invention. In the drawings,

[0026] Figure 1 is a cross-sectional view of a depth sampling device according to an exemplary embodiment of the present invention;

[0027] Figure 2 is a cross-sectional view of a first sealing assembly and a cable according to an exemplary embodiment of the present invention;

[0028] Figure 3 is a schematic structural view of a partial structure of a depth sampling device according to an exemplary embodiment of the present invention.

[0029] Among them, the above-mentioned drawings include the following reference numerals:

[0030] 10, depth sampling device; 110, cylinder; 1110, opening; 1120, lofting screw; 120, sealing seat; 130, switch member; 140, threading pipe; 150, connecting cable; 160, first sealing assembly; 1610, first sealing ring; 1620, first sealing cylinder; 1630, first sealing gland; 1640, first sealing block; 170, sounding rope; 180, retracting and releasing assembly; 1810, support frame; 1820, limiting member; 1830, rocker arm; 190, inlet pipe; 210, filtering component; 2110, housing; 2120, filter element; 220, energy storage control component. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] In the following description, a large amount of details are provided so that the present invention can be thoroughly understood. However, it will be appreciated by those skilled in the art that the following description only exemplarily illustrates a preferred embodiment of the present invention, and the present invention can be implemented without one or more such details. In addition, in order to avoid confusion with the present invention, some technical features well known in the art are not described in detail.

[0032] The present invention provides a fixed depth sampler in an embodiment. The fixed depth sampler can be used for fixed depth sampling of water bodies. Figure 1 and Figure 3 The fixed depth sampler 10 includes a barrel 110, a sealing seat 120, a switch 130 and a threading tube 140. A accommodating space for accommodating a water sample may be provided in the barrel 110, and an opening 1110 connected to the accommodating space may be provided on the barrel 110. The barrel 110 is cylindrical, and the opening 1110 may be located at the bottom of the barrel 110. The volume of the barrel 110 may be between 500mL and 1500mL, and the diameter of the barrel 110 may be between 60mm and 140mm, which can be suitable for a variety of small and old boreholes in small and medium-sized in-situ leaching mines. The barrel 110 may be made of corrosion-resistant and wear-resistant high-strength materials (such as polytetrafluoroethylene, etc.) to ensure that it can resist acid and alkali corrosion and does not affect the water quality of the water sample. The acid and alkali resistance range of the barrel 110 is pH0 to 14. The sealing seat 120 may be arranged on one side of the barrel 110 close to the opening 1110. The sealing seat 120 can be connected to the cylinder 110, or can be spaced apart from the cylinder 110. The switch 130 can be arranged in the sealing seat 120 and used to control the opening 1110 and the outside. The switch 130 can be a solenoid valve. The sealing seat 120 can seal the switch 130 located therein. When the fixed depth sampler 10 is under pressure, the sealing seat 120 can bear the pressure to prevent the switch 130 from being directly under pressure. The threading tube 140 is connected to the sealing seat 120, and a connecting cable 150 is inserted into the threading tube 140. One end of the connecting cable 150 extends into the sealing seat 120 and is connected to the switch 130. The other end of the connecting cable 150 is located outside the threading tube 140 and is connected to the energy storage control component 220. The energy storage control component 220 can provide power to the switch 130 through the connecting cable 150 and control the switch 130, thereby controlling the opening 1110 and the outside, that is, controlling whether to sample. The energy storage control assembly 220 is separated from the cylinder 110. When sampling, the energy storage control assembly 220 can be located on the ground side, remotely control the opening and closing of the switch 130, and accurately control the sampling time. The energy storage control assembly 220 can provide energy for the switch 130, and the switch 130 can be used continuously for up to 1 to 2 hours.

[0033] The depth-fixed sampler 10 provided by the present application ensures the isolation between the switching element 130 and the external sample through the threading tube 140 and the sealing seat 120, improves the pressure resistance and waterproof ability of the switching element 130, and ensures the smooth progress of the water sampling process of the depth-fixed sampler 10. The energy storage control component 220 can remotely open and close the switching element 130 and supply energy to the switching element 130, without involving external power sources or gas sources, etc., and is more suitable for sampling in the field environment. By remotely controlling the opening and closing of the switching element 130, the operator can accurately control the sampling timing to ensure the accuracy and reliability of sampling. The overall structure of the depth-fixed sampler 10 is simple and compact, which is convenient for carrying and transportation.

[0034] Exemplarily, referring to Figure 1 , the threading tube 140 can be disposed through the cylinder body 110. The outlet end of the threading tube 140 can pass through the bottom of the cylinder body 110 and be inserted into the sealing seat 120, and the inlet end of the threading tube 140 can be located at the top of the cylinder body 110. The threading tube 140 extends downward from the top of the cylinder body 110 through the cylinder body 110 and is inserted into the sealing seat 120. The threading tube 140 is located inside the cylinder body 110, which can better reduce the pressure on the threading tube 140. The threading tube 140 extends along the direction from the top to the bottom of the cylinder body 110, and is more conforming to the structural shape of the cylinder body 110, which can minimize the occupation of the space inside the cylinder body 110, and the volume of the accommodation space can be larger. Exemplarily, a lofting screw 1120 can be further disposed at the bottom of the cylinder body 110 for sampling.

[0035] Exemplarily, in combination with reference to Figure 1 and Figure 2, a first sealing assembly 160 may be provided at the connection between the conduit 140 and the sealing seat 120. The first sealing assembly 160 may include at least two of a first sealing ring 1610, a first sealing column 1620, a first sealing gland 1630, and a first sealing block 1640. Among them, the first sealing ring 1610 may be sleeved outside the conduit 140, and the first sealing ring 1610 is pressed against the sealing seat 120. The first sealing ring 1610 may be made of an elastic material. The first sealing ring 1610 may fill the gap between the conduit 140 and the sealing seat 120 to play a sealing role. There may be multiple first sealing rings 1610, and the multiple first sealing rings 1610 may be arranged at intervals. Exemplarily, there may be four first sealing rings 1610. The first sealing column 1620 is sleeved outside the conduit 140 and may be arranged to extend along the extending direction of the conduit 140. The first sealing column 1620 is pressed against the sealing seat 120. The first sealing column may be made of an elastic material. Compared with the first sealing ring 1610, the first sealing column may have a longer sealing length in the extending direction of the conduit 140, and the contact areas of the first sealing column with the sealing seat 120 and the conduit 140 may be larger, so the sealing effect may be better. The first sealing gland 1630 may be sleeved outside the conduit 140 and located outside the sealing seat 120. The end of the first sealing gland 1630 may be pressed against the end of the sealing seat 120, and a sealing cavity surrounding the conduit 140 is formed inside the first sealing gland 1630. The first sealing gland 1630 may be made of an elastic material. The first sealing gland 1630 is pressed against the end of the sealing seat 120 to prevent water from entering through the gap between the sealing seat 120 and the conduit 140, further ensuring the sealing of the switch member 130. The first sealing block 1640 is sleeved outside the conduit 140 and may be located inside the sealing seat 120. At least one first limiting boss is provided on the outer periphery of the first sealing block 1640. The first sealing block 1640 may be made of an elastic material. The first limiting boss may limit and seal the conduit 140. The first sealing assembly 160 may be a combination of any several of the first sealing ring 1610, the first sealing column 1620, the first sealing gland 1630, and the first sealing block 1640. Preferably, the first sealing assembly 160 includes the first sealing ring 1610, the first sealing column 1620, the first sealing gland 1630, and the first sealing block 1640, and the first sealing gland 1630, the first sealing column 1620, the first sealing ring 1610, and the first sealing block 1640 are arranged in sequence.

[0036] Exemplarily, referring to Figure 1, a sealing channel may be formed at the bottom and / or top of the cylinder body 110, the wire threading pipe 140 passes through the sealing channel, and the depth-fixed sampler 10 may further include a second sealing assembly. The second sealing assembly may be correspondingly arranged at the bottom and / or top of the cylinder body 110. The second sealing assembly is similar to the first sealing assembly 160. The second sealing assembly may include at least two of a second sealing ring, a second sealing cylinder, a second sealing gland, and a second sealing block. The second sealing ring is sleeved outside the wire threading pipe 140, and the second sealing ring is extruded against the sealing channel. The second sealing ring may be made of an elastic material. The second sealing ring may fill the gap between the wire threading pipe 140 and the cylinder body 110 to play a sealing role. There may be multiple second sealing rings, and the multiple second sealing rings may be arranged at intervals. Exemplarily, there may be four second sealing rings. The second sealing cylinder is sleeved outside the wire threading pipe 140 and may be arranged to extend along the extending direction of the wire threading pipe 140, and the second sealing cylinder is extruded against the sealing channel. The second sealing cylinder may be made of an elastic material. Compared with the second sealing ring, the second sealing cylinder may have a longer sealing length in the extending direction of the wire threading pipe 140, the contact areas of the second sealing cylinder with the cylinder body 110 and the wire threading pipe 140 may be larger, and the sealing effect may be better. The second sealing gland is sleeved outside the wire threading pipe 140 and is located outside the cylinder body 110. The end of the second sealing gland is extruded against the end of the cylinder body 110, and a second sealing cavity surrounding the wire threading pipe 140 is formed inside the second sealing gland. The second sealing gland may be made of an elastic material. The second sealing gland is extruded against the end of the cylinder body 110 (the corresponding top end and / or bottom end) to prevent water from entering through the gap between the cylinder body 110 and the wire threading pipe 140, and further ensure the sealing of the switch member 130. The second sealing block is sleeved outside the wire threading pipe 140 and is located inside the cylinder body 110. At least one second limiting boss may be provided on the outer periphery of the second sealing block, and the second limiting boss abuts against the cylinder body 110. The second sealing block may be made of an elastic material. The second limiting boss may limit and seal the wire threading pipe 140. The second sealing assembly may be a combination of any several of the second sealing ring, the second sealing cylinder, the second sealing gland, and the second sealing block. Preferably, the second sealing assembly includes a second sealing ring, a second sealing cylinder, a second sealing gland, and a second sealing block, and the second sealing gland, the second sealing cylinder, the second sealing ring, and the second sealing block are arranged in sequence.

[0037] In an embodiment provided with a sealing seat 120, a first sealing assembly 160, and a second sealing assembly, the sealing seat 120, the first sealing assembly 160, and the second sealing assembly achieve three - stage sealing, greatly enhancing the waterproof and pressure - resistant performance of the switching element 130. It can ensure that the operating voltage range of the switching element 130 is 24V, the response time is less than 0.5 seconds, and the pressure resistance is 0 - 6 Mpa. The cylinder 110 is integrally formed of a material with pressure resistance, acid - and alkali - corrosion resistance. Combined with the structural design of the three - stage sealing of the switching element 130, its pressure - resistant and waterproof performance is superior to conventional equipment, and it can stably adapt to variable working conditions such as acidic groundwater, high hydrostatic pressure, and complex hydrogeological conditions.

[0038] Exemplarily, the cylinder 110 can adopt a fully enclosed structural design, completely isolating the atmosphere during the sampling lifting process, effectively inhibiting the oxidation reaction of easily oxidized substances such as Fe2 + in the groundwater sample, and significantly improving the timeliness and accuracy of the sample composition detection data.

[0039] Exemplarily, referring to Figure 1 , the sealing seat 120 and the cylinder 110 can be spaced apart. The outer periphery of the sealing seat 120 may not protrude beyond the outer periphery of the cylinder 110. Further, the outer periphery of the sealing seat 120 can be flush with the outer periphery of the cylinder 110. When lowering the cylinder 110, the resistance received by the sealing seat 120 and the cylinder 110 is more balanced, and the lowering process can be smoother.

[0040] Exemplarily, with reference to Figure 1 and Figure 3 , the depth - fixed sampler 10 further includes a sounding rope 170. The sounding rope 170 is connected to the top of the cylinder 110. The part of the sounding rope 170 and the connection cable 150 outside the conduit 140 are wound together on the winding and unwinding assembly 180. The conduit 140 can pass through the top of the cylinder 110. The connection cable 150 passes through and is wound and unwound together with the sounding rope 170. The lengths of the sounding rope 170 and the connection cable 150 can be wound and unwound between 0 - 600m. In an embodiment provided with scale marks, the scale marks can be in millimeters, and the sampling accuracy can reach the millimeter level. With the setting of the sounding rope 170, the depth - fixed sampler 10 is more suitable for depth - fixed sampling operations of water bodies such as field groundwater and surface water. The operator can accurately lower the depth - fixed water sampler to the predetermined depth, thereby ensuring that the obtained sample can truly reflect the water quality at that predetermined depth.

[0041] Exemplarily, with reference to Figure 1 , Figure 2 and Figure 3, the retraction and deployment assembly 180 may include a support frame 1810 and a winch disposed on the support frame 1810. The portion of the measuring rope 170 and the connection cable 150 outside the conduit 140 may be sleeved in a limiting tube body, and the limiting tube body together with the measuring rope 170 and the connection cable 150 inside may be wound around the winch. The length of the limiting tube body may be the same as that of the measuring rope 170, and the measuring rope 170 and the connection cable 150 may be wrapped along the length direction of the measuring rope 170 and the connection cable 150. The limiting tube body may prevent the measuring rope 170 and the connection cable 150 from directly contacting the outside. The limiting tube body may ensure that the measuring rope 170 and the connection cable 150 are lowered at the same frequency, avoiding interference and snagging between the two in the well. Exemplarily, the limiting tube body may be made of a waterproof material. When the winch rotates, it drives the limiting tube body, the measuring rope 170 and the connection cable 150 to realize the retraction and deployment of the cylinder 110 and the like, and the process is more convenient and efficient. Exemplarily, scale marks may be provided on the outer side of the limiting tube body to indicate the lowering length of the measuring rope 170, so as to control the sampling depth. In use, the support frame 1810 may be supported on the ground. Exemplarily, fixed feet may be provided at the bottom of the support frame 1810 to support more stably on the ground. Exemplarily, the retraction and deployment assembly 180 may further include a rocker arm 1830, and the rocker arm 1830 may be connected to the winch and drive the winch to rotate, making the retraction and deployment process more convenient. Exemplarily, the energy storage control assembly 220 may be disposed at the bottom of the support frame 1810.

[0042] Exemplarily, with reference to Figure 1 and Figure 3 , a limiting member 1820 is further provided on the support frame 1810 to fix the winch. The limiting member 1820 may adopt a mechanical braking method. When the measuring rope 170 is lowered to a predetermined depth, the limiting member 1820 may lock the winch and the measuring rope 170, so that the cylinder 110 is at the predetermined depth for sampling.

[0043] Exemplarily, with reference to Figure 1 , the opening 1110 may communicate with a water inlet pipe 190. The water inlet pipe 190 may pass through the sealing seat 120. One end of the water inlet pipe 190 away from the opening 1110 may be connected to a filtering assembly 210. The filtering assembly 210 may filter impurities to avoid sample contamination. The filtering assembly 210 may be detachably connected to the water inlet pipe 190.

[0044] Exemplarily, with reference to Figure 1, the filtering component 210 may include a housing 2110 and a filter element 2120 disposed within the housing 2110. An inlet space communicating with the outside may be formed within the filter element 2120, and an outlet space communicating with the inlet pipe 190 may be formed between the filter element 2120 and the housing 2110. Exemplarily, the filter element 2120 may be a ceramic filter medium, which can effectively filter out impurities in the water sample, avoid sample contamination, and improve the accuracy and purity of sampling. The filtering precision of the filtering component 210 may be between 5 and 30 μm.

[0045] Taking an acid leaching uranium mine acidic groundwater remediation project as an application scenario, in a liquid injection well with a well depth of 150 m, a static water level of 35 m, and an inner diameter of 148 mm, fixed-depth sampling of the slotted pipe section is implemented, with a sampling depth of 135 m and an acidic groundwater environment with a pH of 2 - 3 as an example. The sampling process may be as follows:

[0046] Step S1: Pre-inspection of surface equipment: Confirm that each component of the fixed-depth sampler 10 is in good condition, check that the switch member 130 and the energy storage control component 220 are in a power-off state and the energy storage is normal, and verify the opening and closing function of the switch member 130;

[0047] Step S2: Downhole positioning of the device: Connect the sounding rope 170 and the connecting cable 150 to the cylinder body 110 through a quick connector, and vertically lower the device through the wellhead to the target well section;

[0048] Step S3: Depth positioning: Operate the rocker arm 1830 to synchronously release the sounding rope 170 and the connecting cable 150. According to the marked scale display of the limit pipe body, when the device reaches the target depth of 135 m, activate the limiting member 1820 to fix the positions of the sounding rope 170 and the connecting cable 150;

[0049] Step S4: Sampling: Connect the energy storage control component 220, remotely activate the switch member 130, and allow the acidic groundwater to flow into the cylinder body 110 after passing through the filtering component 210;

[0050] Step S5: Sampling completion: After maintaining the sampling state for 5 minutes, remotely close the switch member 130, cut off the energy storage control component 220, and terminate the sampling;

[0051] Step S6: Device recovery: Release the lock of the limiting member 1820, reverse-rotate the rocker arm 1830, and uniformly retract the sounding rope 170 and the connecting cable 150;

[0052] Step S7: Sample extraction: After taking out the cylinder body 110, loosen the sampling screw 1120 at the bottom of the cylinder body 110 to collect the sample, and then send it to the laboratory for testing;

[0053] Step S8: Disassembling and cleaning the filtering component 210: Rotate to release the connection between the filtering component 210 and the cylinder body 110, rinse with pure water to remove the residual acidic medium, restart the energy storage control component 220, turn on the switch 130 to establish a rinsing flow path, immerse the cylinder body 110 with the removed filter and the sealing seat 120 as a whole in a pure water tank for 30 minutes to remove the internal corrosive residue;

[0054] Step S9: Resetting the device for standby: Reassemble the purified cylinder body 110, the sealing seat 120, etc., and enter the next sampling cycle.

[0055] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front", "rear", "upper", "lower", "left", "right", "lateral", "vertical", "perpendicular", "horizontal" and "top", "bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inner" and "outer" refer to the inside and outside relative to the contour of each component itself.

[0056] For the convenience of description, regional relative terms such as "above...", "over...", "on the upper surface of...", "above-mentioned", etc. can be used here to describe the regional positional relationship between one or more components or features shown in the drawings and other components or features. It should be understood that the regional relative terms not only include the orientation of the components described in the drawings, but also different orientations during use or operation. For example, if the components in the drawings are inverted as a whole, the component "above other components or features" or "over other components or features" will include the situation where the component is "below other components or structures" or "under other components or structures". Thus, the exemplary term "above..." can include both the orientation of "above..." and "below...". In addition, these components or features can also be positioned at other different angles (for example, rotated 90 degrees or other angles), and this article is intended to include all these situations.

[0057] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, components, assemblies, and / or combinations thereof.

[0058] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of this application described here can be implemented in an order other than those illustrated or described here.

[0059] The present invention has been described through the above embodiments. However, it should be understood that the above embodiments are only for the purpose of illustration and example, and are not intended to limit the present invention to the scope of the described embodiments. In addition, those skilled in the art can understand that the present invention is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope of protection required by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalent scope.

Claims

1. A depth-fixed sampler, characterized in that, include: A cylinder (110), wherein a containing space for containing a water sample is provided in the cylinder (110), and an opening (1110) communicating with the containing space is provided on the cylinder (110); A sealing seat (120), the sealing seat (120) being arranged on a side of the cylinder (110) close to the opening (1110); A switch component (130), the switch component (130) being disposed in the sealing seat (120) and used for controlling the connection and disconnection between the opening (1110) and the outside; as well as A wire threading tube (140), the wire threading tube (140) being connected to the sealing seat (120), a connecting cable (150) being passed through the wire threading tube (140), one end of the connecting cable (150) extending into the sealing seat (120) and connected to the switch element (130), and the other end of the connecting cable (150) being located outside the wire threading tube (140) and connected to the energy storage control component (220).

2. The depth-fixed sampler according to claim 1, wherein The threading tube (140) is inserted into the cylinder (110), the wire outlet end of the threading tube (140) passes through the bottom of the cylinder (110) and is inserted into the sealing seat (120), and the wire inlet end of the threading tube (140) is located at the top of the cylinder (110).

3. The depth-fixed sampler according to claim 2, wherein A first sealing assembly (160) is provided at the connection between the threading tube (140) and the sealing seat (120), wherein the first sealing assembly (160) comprises at least two of a first sealing ring (1610), a first sealing cylinder (1620), a first sealing gland (1630) and a first sealing block (1640). The first sealing ring (1610) is sleeved outside the threading tube (140), and the first sealing ring (1610) is pressed against the sealing seat (120); The first sealing column (1620) is sleeved outside the threading tube (140) and is extended along the extension direction of the threading tube (140), and the first sealing column (1620) is pressed against the sealing seat (120); The first sealing gland (1630) is sleeved outside the threading tube (140) and is located outside the sealing seat (120), the end of the first sealing gland (1630) is pressed against the end of the sealing seat (120), and a first sealing cavity surrounding the threading tube (140) is formed in the first sealing gland (1630); The first sealing block (1640) is sleeved outside the threading tube (140) and is located on the inner side of the sealing seat (120), and at least one first limiting boss is provided on the outer periphery of the first sealing block (1640).

4. The depth-fixed sampler according to claim 2, characterized in that, A sealing channel is formed at the bottom and / or the top of the cylinder (110), and the threading tube (140) passes through the sealing channel. The fixed depth sampler (10) also includes a second sealing assembly, which includes at least two of a second sealing ring, a second sealing cylinder, a second sealing gland, and a second sealing block. The second sealing ring is sleeved outside the threading tube (140), and the second sealing ring is pressed against the sealing channel; The second sealing cylinder is sleeved outside the wire threading pipe (140) and extends along the extending direction of the wire threading pipe (140), and the second sealing cylinder is pressed against the sealing channel; The second sealing gland is sleeved outside the wire threading pipe (140) and is located outside the cylinder body. The end of the second sealing gland is pressed against the end of the cylinder body, and a second sealing cavity surrounding the wire threading pipe (140) is formed inside the second sealing gland; The second sealing block is sleeved outside the wire threading pipe (140) and is located inside the cylinder body. At least one second limiting boss is arranged on the outer periphery of the second sealing block, and the second limiting boss abuts against the cylinder body.

5. The depth-fixed sampler according to claim 1, wherein, The sealing seat (120) is arranged at an interval from the cylinder body (110), and the outer periphery of the sealing seat (120) does not protrude from the outer periphery of the cylinder body (110).

6. The depth-fixed sampler according to any one of claims 1 to 5, characterized in that, The depth-determining sampler (10) further includes a measuring rope (170). The measuring rope (170) is connected to the top of the cylinder body (110), and the part of the measuring rope (170) and the connecting cable (150) located outside the wire threading pipe (140) are wound around the winding and unwinding assembly (180) together.

7. The depth-fixed sampler according to claim 6, wherein The winding and unwinding assembly (180) includes a support frame (1810) and a winch arranged on the support frame (1810). The part of the measuring rope (170) and the connecting cable (150) located outside the wire threading pipe (140) are sleeved in a limiting pipe body, and the limiting pipe body together with the measuring rope (170) and the connecting cable (150) inside are wound around the winch.

8. The depth-fixed sampler according to claim 7, characterized in that, A limiting member (1820) is further arranged on the support frame (1810) to fix the winch.

9. The depth-fixed sampler according to claim 1, wherein The opening (1110) is communicated with a water inlet pipe (190). The water inlet pipe (190) passes through the sealing seat (120), and the end of the water inlet pipe (190) far from the opening (1110) is connected with a filtering assembly (210).

10. The depth-fixed sampler according to claim 9, wherein, The filtering assembly (210) includes an outer shell body (2110) and a filter element (2120) arranged inside the outer shell body (2110). An inlet space communicated with the outside is formed inside the filter element (2120), and an outlet space communicated with the water inlet pipe (190) is formed between the filter element (2120) and the outer shell body (2110).

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