depth sampler

Abstract

The application provides a depth sampler. The depth sampler comprises a barrel, an accommodation space for accommodating a water sample is arranged in the barrel, an opening in communication with the accommodation space is arranged on the barrel, a sealing seat is arranged on one side of the barrel close to the opening, a switch piece is arranged in the sealing seat and is used for controlling the opening and the outside, a wire pipe is connected to the sealing seat, a connecting cable is arranged in the wire pipe, one end of the connecting cable extends into the sealing seat and is connected with the switch piece, and the other end of the connecting cable is located outside the wire pipe and is in communication with an energy storage control assembly. Through the wire pipe and the sealing seat, the isolation of the switch piece and the outside sample is ensured, the voltage resistance and waterproof capability of the switch piece are improved, and the smooth progress of the water sampling process of the depth sampler is ensured. The energy storage control assembly can remotely open and close the switch piece and supply energy for the switch piece, and is more suitable for sampling in the field environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sampling devices, in particular to a depth sampler. BACKGROUND

[0002] The depth sampler generally comprises a barrel, a switch and a rope connected to the barrel. When taking water at a certain depth, the barrel is lowered to the corresponding depth through the rope, the switch is opened to make the barrel contact with the external water body. The external water body enters the barrel through the opening on the barrel, the rope is pulled up, the barrel is retrieved and the water sample taken in the barrel is obtained.

[0003] During the lowering of the barrel, both the barrel and the switch are under pressure. The existing switch has weak pressure resistance, which affects the use of the switch during the water taking process, and further affects the progress of the water taking process. SUMMARY

[0004] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present application, a depth sampler is provided. The depth sampler comprises a barrel, a containment space for containing a water sample is arranged in the barrel, an opening is arranged on the barrel and communicates with the containment space; a sealing seat is arranged on one side of the barrel close to the opening; a switch element is arranged in the sealing seat and is used to control the opening and the outside; and a wire pipe is connected to the sealing seat, a connecting cable is arranged in the wire pipe, one end of the connecting cable extends into the sealing seat and is connected with the switch element, and the other end of the connecting cable is located outside the wire pipe and communicates with an energy storage control assembly.

[0005] The depth sampler provided by the present application ensures the isolation of the switch element and the external sample through the wire pipe and the sealing seat, improves the pressure resistance and waterproofness of the switch element, and ensures the smooth progress of the water taking process of the depth sampler. The energy storage control assembly can remotely control the opening and closing of the switch element and provide power for the switch element, without involving external power supply or gas source, and is more suitable for sampling in the field environment. Remote control of the opening and closing of the switch element enables the operator to accurately control the sampling time and ensure the accuracy and reliability of the sampling. The overall structure of the depth sampler is simple and compact, and is convenient to carry and transport.

[0006] Exemplarily, the wire pipe is arranged in the barrel, the outlet end of the wire pipe passes through the bottom of the barrel and is inserted into the sealing seat, and the inlet end of the wire pipe is located at the top of the barrel.

[0007] Exemplarily, a first sealing assembly is arranged at the connection between the wire pipe and the sealing seat, the first sealing assembly comprises 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 wire pipe and is pressed against the sealing seat;

[0009] The first sealing cylinder is sleeved outside the threading pipe and extends along the extension direction of the threading pipe, and the first sealing cylinder is extruded by 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 by the end of the sealing seat, and the first sealing gland forms a first sealing cavity surrounding the threading pipe.

[0011] The first sealing block is sleeved outside the threading pipe and located inside the sealing seat, and the outer periphery of the first sealing block is provided with at least one first limiting boss.

[0012] Exemplarily, the bottom and / or the top of the barrel form a sealing channel, the threading pipe passes through the sealing channel, and the depth sampler further comprises a second sealing assembly, the second sealing assembly comprising 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 by the sealing channel;

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

[0015] The second sealing gland is sleeved outside the threading pipe and located outside the barrel, the end of the second sealing gland is extruded by the end of the barrel, and the second sealing gland forms a second sealing cavity surrounding the threading pipe.

[0016] The second sealing block is sleeved outside the threading pipe and located inside the barrel, and the outer periphery of the second sealing block is provided with at least one second limiting boss, and the second limiting boss abuts against the barrel.

[0017] Exemplarily, the sealing seat is spaced apart from the barrel, and the outer periphery of the sealing seat does not protrude from the outer periphery of the barrel.

[0018] Exemplarily, the depth sampler further comprises a measuring rope, the measuring rope is connected to the top of the barrel, and the measuring rope and the part of the connecting cable located outside the threading pipe are wound on the winding and unwinding assembly together.

[0019] Exemplarily, the winding and unwinding assembly comprises a support frame and a winch arranged on the support frame, the measuring rope and the part of the connecting cable located outside the threading pipe are sleeved in a limiting pipe body, and the limiting pipe body, together with the measuring rope and the connecting cable inside, is wound on the winch.

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

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

[0022] Exemplarily, the filtering assembly comprises an outer housing and a filter core arranged in the outer housing, a water inlet space is formed in the filter core and communicates with the outside, and a water outlet space is formed between the filter core and the outer housing and communicates with the water inlet pipeline.

[0023] A series of simplified concepts are introduced in the summary, which will be further described in detail in the specific embodiments. The summary is not intended to limit the key features and essential technical features of the technical solution to be claimed, nor is it intended to determine the protection scope of the technical solution to be claimed.

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

[0025] The following drawings of the present application are hereby incorporated as part of the present application for the purpose of understanding the present application. The embodiments of the present application and their description shown in the drawings are used to explain the principles of the present application. In the drawings,

[0026] Figure 1 is a sectional view of a depth sampler according to an exemplary embodiment of the present application;

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

[0028] Figure 3 is a structural schematic diagram of a partial structure of a depth sampler according to an exemplary embodiment of the present application.

[0029] Among the above drawings, the following reference signs are included:

[0030] 10, depth sampler; 110, barrel; 1110, opening; 1120, sampling screw; 120, sealing seat; 130, switch piece; 140, threading pipe; 150, connecting cable; 160, first sealing assembly; 1610, first sealing ring; 1620, first sealing column; 1630, first sealing gland; 1640, first sealing block; 170, measuring rope; 180, winding and unwinding assembly; 1810, support frame; 1820, limiting piece; 1830, rocker arm; 190, water inlet pipeline; 210, filtering assembly; 2110, outer housing; 2120, filter core; 220, energy storage control assembly. DETAILED DESCRIPTION

[0031] In the following description, numerous specific details are provided to provide a thorough understanding of the present application. One of ordinary skill in the art will recognize, however, that the application can be practiced without one or more of the specific details. Also, in order to avoid obscuring the present application, some well-known features of various components are not described in detail.

[0032] A depth sampler is provided in the embodiments of the present application. The depth sampler can be used for depth sampling of a water body. In combination with reference to Figure 1 and Figure 3 The depth sampler 10 comprises a barrel 110, a sealing seat 120, a switch piece 130, and a wire-through pipe 140. The barrel 110 can be provided with a containing space for containing a water sample, and the barrel 110 can be provided with an opening 1110 in communication with the containing space. The barrel 110 is in a cylindrical shape, and the opening 1110 can be located at the bottom of the barrel 110. The volume of the barrel 110 can be between 500 mL and 1500 mL, and the diameter of the barrel 110 can be between 60 mm and 140 mm, which can be suitable for various small and medium-sized mines and small and old drill holes. The barrel 110 can be made of a high-strength material resistant to corrosion and wear (such as polytetrafluoroethylene), so as to ensure that it can resist acid and alkali corrosion and not affect the water quality of the water sample. The barrel 110 has an acid and alkali resistance range of pH 0-14. The sealing seat 120 can be arranged on one side of the barrel 110 close to the opening 1110. The sealing seat 120 can be connected with the barrel 110 or arranged separately from the barrel 110. The switch piece 130 can be arranged in the sealing seat 120 and used to control the opening and closing of the opening 1110 with the outside. The switch piece 130 can be a solenoid valve. The sealing seat 120 can seal the switch piece 130 located therein. When the depth sampler 10 is under pressure, the sealing seat 120 can bear the pressure to avoid the switch piece 130 directly bearing the pressure. The wire-through pipe 140 is connected to the sealing seat 120, and a connecting cable 150 is arranged in the wire-through pipe 140. One end of the connecting cable 150 extends into the sealing seat 120 and is connected with the switch piece 130, and the other end of the connecting cable 150 is located outside the wire-through pipe 140 and is in communication with an energy storage control assembly 220. The energy storage control assembly 220 can provide electric energy for the switch piece 130 through the connecting cable 150 and control the switch piece 130, thereby controlling the opening and closing of the opening 1110 with the outside, i.e., controlling whether to sample. The energy storage control assembly 220 is arranged separately from the barrel 110. When sampling, the energy storage control assembly 220 can be located on the ground side to remotely control the opening and closing of the switch piece 130 and accurately control the sampling time. The energy storage control assembly 220 can supply energy for the switch piece 130, and the continuous use time of the switch piece 130 can be 1-2 hours.

[0033] The depth sampler 10 provided in the application ensures the isolation of the switch piece 130 from the external sample through the threading pipe 140 and the sealing seat 120, improves the voltage resistance and waterproof ability of the switch piece 130, and ensures the smooth progress of the water taking process of the depth sampler 10. The energy storage control assembly 220 can realize the opening and closing of the switch piece 130 remotely, and supply energy for the switch piece 130, without involving external power supply or gas source, and is more suitable for sampling in the field environment. The opening and closing of the switch piece 130 is remotely controlled, and the operator can accurately control the sampling time to ensure the accuracy and reliability of the sampling. The overall structure of the depth sampler 10 is simple and compact, and is convenient for carrying and transportation.

[0034] Exemplarily, referring to Figure 1 The threading pipe 140 can be arranged in the barrel 110, the wire outlet end of the threading pipe 140 can pass through the bottom of the barrel 110 and be inserted into the sealing seat 120, and the wire inlet end of the threading pipe 140 can be located at the top of the barrel 110. The threading pipe 140 extends downward along the top of the barrel 110, passes through the barrel 110 and is inserted into the sealing seat 120. The threading pipe 140 is located on the inner side of the barrel 110, which can better reduce the pressure on the threading pipe 140. The threading pipe 140 extends along the top to the bottom of the barrel 110, which is more suitable for the structure shape of the barrel 110, can reduce the occupation of the space in the barrel 110 as much as possible, and the volume of the accommodation space can be larger. Exemplarily, the bottom of the barrel 110 can be further provided with a sampling screw 1120 for sampling.

[0035] Exemplarily, referring to Figure 1 and Figure 2The connection between the wire-through pipe 140 and the sealing seat 120 can be provided with a first sealing assembly 160, which can 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. The first sealing ring 1610 can be sleeved outside the wire-through pipe 140 and is in extrusion with the sealing seat 120. The first sealing ring 1610 can be made of elastic material. The first sealing ring 1610 can fill the gap between the wire-through pipe 140 and the sealing seat 120 and play a sealing role. The first sealing ring 1610 can be multiple, and the multiple first sealing rings 1610 can be arranged at intervals. For example, the first sealing ring 1610 can be four. The first sealing column 1620 is sleeved outside the wire-through pipe 140 and can be arranged in the extension direction of the wire-through pipe 140, and the first sealing column 1620 is in extrusion with the sealing seat 120. The first sealing column can be made of elastic material. The first sealing column can have a longer sealing length in the extension direction of the wire-through pipe 140 than the first sealing ring 1610, and the contact area of the first sealing column with the sealing seat 120 and the wire-through pipe 140 can be larger, and the sealing effect can be better. The first sealing gland 1630 can be sleeved outside the wire-through pipe 140 and located outside the sealing seat 120, and the end of the first sealing gland 1630 can be in extrusion with the end of the sealing seat 120. The first sealing gland 1630 forms a sealing cavity surrounding the wire-through pipe 140. The first sealing gland 1630 can be made of elastic material. The first sealing gland 1630 is in extrusion with the end of the sealing seat 120, avoiding water entering through the gap between the sealing seat 120 and the wire-through pipe 140, and further ensuring the sealing of the switch piece 130. The first sealing block 1640 is sleeved outside the wire-through pipe 140 and can be located inside the sealing seat 120. The outer periphery of the first sealing block 1640 is provided with at least one first limiting boss. The first sealing block 1640 can be made of elastic material. The first limiting boss can limit and seal the wire-through pipe 140. The first sealing assembly 160 can be a combination of any 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] For example, with reference to Figure 1The bottom and / or the top of the barrel 110 can be formed with a sealing channel through which the wire pipe 140 passes, and the depth sampler 10 can further comprise a second sealing assembly. The second sealing assembly can be arranged on the bottom and / or the top of the barrel 110. The second sealing assembly is similar to the first sealing assembly 160. The second sealing assembly can comprise 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 pipe 140 and is in contact with the sealing channel. The second sealing ring can be made of elastic material. The second sealing ring can fill the gap between the wire pipe 140 and the barrel 110 and play a sealing role. The second sealing ring can be multiple, and the multiple second sealing rings can be arranged at intervals. For example, the second sealing ring can be four. The second sealing cylinder is sleeved outside the wire pipe 140 and can be arranged in the extension direction of the wire pipe 140, and the second sealing cylinder is in contact with the sealing channel. The second sealing cylinder can be made of elastic material. The second sealing cylinder can have a longer sealing length in the extension direction of the wire pipe 140 than the second sealing ring, and the contact area of the second sealing cylinder with the barrel 110 and the wire pipe 140 can be larger, and the sealing effect can be better. The second sealing gland is sleeved outside the wire pipe 140 and located outside the barrel 110, the end of the second sealing gland is in contact with the end of the barrel 110, and the second sealing gland forms a second sealing cavity surrounding the wire pipe 140. The second sealing gland can be made of elastic material. The second sealing gland is in contact with the end (corresponding to the top end and / or the bottom end) of the barrel 110, which avoids water entering through the gap between the barrel 110 and the wire pipe 140, and further ensures the sealing of the switch 130. The second sealing block is sleeved outside the wire pipe 140 and located inside the barrel 110, and the outer periphery of the second sealing block can be provided with at least one second limiting boss in contact with the barrel 110. The second sealing block can be made of elastic material. The second limiting boss can limit and seal the wire pipe 140. The second sealing assembly can be a combination of any of the second sealing ring, the second sealing cylinder, the second sealing gland, and the second sealing block. Preferably, the second sealing assembly comprises the second sealing ring, the second sealing cylinder, the second sealing gland, and the 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 the embodiment provided with the sealing seat 120, the first sealing assembly 160 and the second sealing assembly, the sealing seat 120, the first sealing assembly 160 and the second sealing assembly achieve three-stage sealing, greatly improving the waterproof and pressure-resistant performance of the switch part 130. The working voltage range of the switch part 130 can be guaranteed to be 24V, the response time is less than 0.5 seconds, and the pressure resistance is 0-6 Mpa. The barrel 110 is integrally formed by using a pressure-resistant and acid-alkali corrosion-resistant material, and cooperates with the three-stage sealing structure design of the switch part 130, so that the pressure-resistant and waterproof performance is superior to that of conventional equipment, and can stably adapt to various working condition environments such as acidic underground water, high hydrostatic pressure and complex hydrogeological conditions.

[0038] Exemplarily, the barrel 110 can adopt a fully-closed structure design, and the sampling and lifting are completely isolated from the atmosphere, so as to effectively inhibit the oxidation reaction of Fe2 + and other easily oxidizable examples in the underground water sample, and significantly improve the timeliness and accuracy of the sample component detection data.

[0039] Exemplarily, referring to Figure 1 , the sealing seat 120 and the barrel 110 can be spaced apart, and the outer periphery of the sealing seat 120 can not protrude from the outer periphery of the barrel 110. Further, the outer periphery of the sealing seat 120 can be flush with the outer periphery of the barrel 110. When the barrel 110 is lowered, the sealing seat 120 and the barrel 110 are more balanced in resistance, and the lowering process can be more stable.

[0040] Exemplarily, in combination with Figure 1 and Figure 3 , the depth sampler 10 further comprises a measuring rope 170 connected to the top of the barrel 110, and the measuring rope 170 is wound on the winding and unwinding assembly 180 together with the part of the connecting cable 150 located outside the threading pipe 140. The threading pipe 140 can pass through the top of the barrel 110. The connecting cable 150 is drawn out and wound together with the measuring rope 170. The lengths of the measuring rope 170 and the connecting cable 150 can be wound between 0-600 m. In the embodiment provided with scale marks, the scale marks can be in millimeter units, and the sampling accuracy can reach millimeter level. The provision of the measuring rope 170 makes the depth sampler 10 more suitable for depth sampling operation of underground water, surface water and other water bodies in the field. The operator can accurately lower the depth water sampler to a predetermined depth, so as to ensure that the obtained sample can truly reflect the water quality at the predetermined depth.

[0041] Exemplarily, in combination with Figure 1 , Figure 2 and Figure 3The winding and unwinding assembly 180 can include 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 outside the threading pipe 140 can be sleeved in the limiting pipe body, and the limiting pipe body, the measuring rope 170 and the connecting cable 150 inside the limiting pipe body can be wound on the winch together. The length of the limiting pipe body can be the same as the length of the measuring rope 170, and the limiting pipe body can wrap the measuring rope 170 and the connecting cable 150 along the length direction of the measuring rope 170 and the connecting cable 150. The limiting pipe body can avoid the direct contact of the measuring rope 170 and the connecting cable 150 with the outside. The limiting pipe body can ensure that the measuring rope 170 and the connecting cable 150 are lowered at the same frequency, and avoid interference and hooking of each other in the well. The limiting pipe body can be made of waterproof material. The winch is rotated to drive the limiting pipe body, the measuring rope 170 and the connecting cable 150, so as to realize the winding and unwinding of the barrel body 110 and the like, and the process is more convenient and efficient. The outer side of the limiting pipe body can be provided with a scale mark for indicating the lowering length of the measuring rope 170, so as to control the sampling depth. In use, the support frame 1810 can be supported on the ground. The bottom of the support frame 1810 can be provided with a fixed leg to be more stably supported on the ground. The winding and unwinding assembly 180 can further include a rocker arm 1830, the rocker arm 1830 can be connected with the winch and drive the winch to rotate, so that the winding and unwinding process is more convenient. The energy storage control assembly 220 can be arranged at the bottom of the support frame 1810.

[0042] For example, in combination with reference to Figure 1 and Figure 3 , the support frame 1810 is further provided with a limiting piece 1820 to fix the winch. The limiting piece 1820 can adopt a mechanical brake mode, when the measuring rope 170 is lowered to a predetermined depth, the limiting piece 1820 can lock the winch and the measuring rope 170, so that the barrel body 110 is at the predetermined depth for sampling.

[0043] For example, in combination with reference to Figure 1 , the opening 1110 can be communicated with a water inlet pipe 190, the water inlet pipe 190 can pass through the sealing seat 120, and the end of the water inlet pipe 190 away from the opening 1110 can be connected with a filtering assembly 210. The filtering assembly 210 can filter impurities to avoid pollution of the sample. The filtering assembly 210 can be detachably connected with the water inlet pipe 190.

[0044] For example, in combination with reference to Figure 1The filter assembly 210 can include an outer housing 2110 and a filter core 2120 arranged in the outer housing 2110. The filter core 2120 can be formed with a water inlet space in communication with the outside, and a water outlet space in communication with the water inlet pipeline 190 is formed between the filter core 2120 and the outer housing 2110. The filter core 2120 can be ceramic filter material, which can effectively filter out impurities in the water sample, avoid sample pollution, and improve the accuracy and purity of sampling. The filtering precision of the filter assembly 210 can be 5-30 μm.

[0045] Taking the acid groundwater remediation project of a certain acid leaching uranium mine as an application scenario, the flower pipe section depth sampling is implemented 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. The sampling depth is 135 m. Taking the groundwater in a pH 2-3 acidic environment as an example, the sampling process can be as follows:

[0046] Step S1: Pre-checking of ground equipment: confirming that each component of the depth sampler 10 is intact, checking that the switch 130 and the energy storage control assembly 220 are in a power-off state and the energy storage is normal, and verifying the opening and closing function of the switch 130;

[0047] Step S2: Device positioning underground: connecting the measuring rope 170 and the connecting cable 150 through the quick connector to the cylinder 110, and vertically lowering the device through the hole to the target well section;

[0048] Step S3: Depth positioning: operating the rocker arm 1830 to release the measuring rope 170 and the connecting cable 150 synchronously, and according to the scale display of the limiting pipe body, when the device reaches the target depth of 135 m, starting the limiting part 1820 to fix the position of the measuring rope 170 and the connecting cable 150;

[0049] Step S4: Sampling: connecting the energy storage control assembly 220, remotely opening the switch 130, and making the acidic groundwater flow into the cylinder 110 after passing through the filter assembly 210;

[0050] Step S5: Sampling completion: after maintaining the sampling state for 5 min, remotely closing the switch 130, cutting off the energy storage control assembly 220, and terminating the sampling;

[0051] Step S6: Device recovery: releasing the locking of the limiting part 1820, reversing the rocker arm 1830, and uniformly recovering the measuring rope 170 and the connecting cable 150;

[0052] Step S7: Sample extraction: after taking out the cylinder 110, loosening the sample releasing screw 1120 at the bottom of the cylinder 110 to collect the sample, and then sending it to the laboratory for detection;

[0053] Step S8: filter assembly 210 disassembly and cleaning: rotating to remove the connection between the filter assembly 210 and the cylinder 110, using pure water to flush and remove the acidic medium residue, restarting the energy storage control assembly 220, opening the switch 130 to establish a flushing flow channel, immersing the cylinder 110 and the sealing seat 120, etc. with the filter removed in the pure water tank for 30 minutes to clear the internal corrosive residue;

[0054] Step S9: device reset standby: reassembling the purified cylinder 110 and the sealing seat 120, etc. to enter the next sampling cycle.

[0055] In the description of the present application, it should be understood that the orientation words such as "front", "back", "up", "down", "left", "right", "transverse", "vertical", "vertical", "horizontal", and "top", "bottom", etc. indicated by the orientation or position relationship shown in the drawings are generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner" and "outer" refer to the inner and outer of the contour of each component itself.

[0056] For the convenience of description, here the area relative terms such as "on", "above", "upper surface", "upper", etc. can be used to describe the area position relationship of one or more components or features shown in the figure with other components or features. It should be understood that the area relative terms not only include the orientation of the components described in the figure, but also include different orientations in use or operation. For example, if the components in the figure are inverted as a whole, the components "above" or "on" other components or features will include the case of "below" or "under" other components or structures. Therefore, the exemplary term "above" can include both "above" and "below". In addition, these components or features can also be positioned at other different angles (for example, rotated by 90 degrees or other angles), and all these cases are intended to be included herein.

[0057] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, it means that there is a feature, step, operation, component, assembly and / or combination thereof.

[0058] It should be noted that the terms "first", "second", and the like, used in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the use of these terms herein is merely for distinguishing between the similar elements and in no way defines a specific order or chronology unless explicitly defined as such.

[0059] The present application has been described through the above-described embodiments, but it should be understood that the above-described embodiments are only for the purpose of illustration and explanation, and are not intended to limit the present application to the scope of the described embodiments. Furthermore, those skilled in the art can understand that the present application is not limited to the above-described embodiments, and various modifications and changes can be made according to the teachings of the present application, and these modifications and changes all fall within the scope of the present application claimed. The scope of protection of the present application is defined by the attached claims and their equivalents.

Claims

1. A depth sampler, characterized by The depth sampler (10) comprises: a barrel (110) in which a containing space for containing a water sample is arranged, and an opening (1110) is arranged on the barrel (110) and communicates with the containing space; a sealing seat (120) arranged on one side of the barrel (110) close to the opening (1110), and the sealing seat (120) is arranged in a spaced manner with the barrel (110); a switch piece (130) arranged in the sealing seat (120) and used for controlling the opening (1110) to be connected or disconnected with the outside; and a wire-through pipe (140) connected to the sealing seat (120), a connecting cable (150) is arranged in the wire-through pipe (140), one end of the connecting cable (150) extends into the sealing seat (120) and is connected with the switch piece (130), the other end of the connecting cable (150) is located outside the wire-through pipe (140) and communicates with an energy storage control assembly (220), the wire-through pipe (140) is arranged in the barrel (110), and a wire outlet end of the wire-through pipe (140) penetrates through the bottom of the barrel (110) and is inserted into the sealing seat (120), and a wire inlet end of the wire-through pipe (140) is located at the top of the barrel (110), a sealing channel is formed in the bottom and / or the top of the barrel (110), the wire-through pipe (140) penetrates through the sealing channel, and the depth sampler (10) further comprises a second sealing assembly, the second sealing assembly comprises 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-through pipe (140), and the second sealing ring is pressed against the sealing channel; the second sealing cylinder is sleeved outside the wire-through pipe (140) and is arranged in an extending manner along the extending direction of the wire-through pipe (140), and the second sealing cylinder is pressed against the sealing channel; the second sealing gland is sleeved outside the wire-through pipe (140) and is located outside the barrel, an end portion of the second sealing gland is pressed against an end portion of the barrel, and a second sealing cavity surrounding the wire-through pipe (140) is formed in the second sealing gland; the second sealing block is sleeved outside the wire-through pipe (140) and is located inside the barrel, and at least one second limiting boss is arranged on the outer periphery of the second sealing block, and the second limiting boss is abutted against the barrel.

2. The depth sampler of claim 1, wherein, a first sealing assembly (160) is arranged at the connection between the wire-through pipe (140) and the sealing seat (120), and 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 wire-through pipe (140), and the first sealing ring (1610) is pressed against the sealing seat (120); The first sealing cylinder (1620) is sleeved outside the penetrating pipe (140) and extends along the extension direction of the penetrating pipe (140), and the first sealing cylinder (1620) is pressed against the sealing seat (120); The first sealing gland (1630) is sleeved outside the penetrating pipe (140) and 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 the first sealing gland (1630) is internally formed with a first sealing cavity surrounding the penetrating pipe (140); The first sealing block (1640) is sleeved outside the penetrating pipe (140) and located inside the sealing seat (120), and the outer periphery of the first sealing block (1640) is provided with at least one first limiting boss.

3. The depth sampler of claim 1, wherein, The outer periphery of the sealing seat (120) is not protruded from the outer periphery of the barrel (110).

4. The depth sampler of any one of claims 1 to 3, wherein, The depth sampler (10) further comprises a measuring rope (170) connected to the top of the barrel (110), and the measuring rope (170) is wound on a winding and unwinding assembly (180) together with the part of the connecting cable (150) located outside the penetrating pipe (140).

5. The depth finder of claim 4 wherein, The winding and unwinding assembly (180) comprises a support frame (1810) and a winch arranged on the support frame (1810), the measuring rope (170) and the part of the connecting cable (150) located outside the penetrating pipe (140) are sleeved in a limiting pipe body, and the limiting pipe body is wound on the winch together with the measuring rope (170) and the connecting cable (150) inside.

6. The depth finder of claim 5 wherein, The support frame (1810) is further provided with a limiting piece (1820) to fix the winch.

7. The depth finder of claim 1 wherein, The opening (1110) is communicated with a water inlet pipeline (190), the water inlet pipeline (190) passes through the sealing seat (120), and one end of the water inlet pipeline (190) away from the opening (1110) is connected with a filter assembly (210).

8. The depth finder of claim 7 wherein, The filter assembly (210) comprises an outer shell (2110) and a filter core (2120) arranged in the outer shell (2110), the filter core (2120) is internally formed with a water inlet space communicated with the outside, and the filter core (2120) and the outer shell (2110) are formed with a water outlet space communicated with the water inlet pipeline (190).

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