A surveying and mapping geographic information data collection tool

Abstract

The present invention relates to the field of surveying and mapping geographic information data collection, and in particular to a surveying and mapping geographic information data collection tool, comprising a water sampler for deep water collection, and a recovery mechanism disposed at the top of the water sampler, the recovery mechanism being used to inflate and recover the water sampler at a set sampling depth; the recovery mechanism comprising: a housing, the housing being provided with a pressure chamber for setting the diving depth of the water sampler and an assembly slot for connecting a disposable gas cylinder. The device can preset the pressure in the pressure chamber, using the pressure difference between the pressure chamber and the water pressure at the water depth where the recovery mechanism is located as a trigger condition, and a special valve group structure consisting of components such as a valve column and a cross-shaped airway to achieve sampling and recovery of the water sampler at a specified depth. The water sampler no longer requires a rope to be tied, and can be directly deployed, automatically sampled, automatically sunk, and automatically floated up for recovery. In addition to the disposable small gas cylinder, the recovery mechanism is not only reusable but also simple and convenient to operate.

Description

Technical Field

[0001] The present invention relates to the field of surveying and mapping geographic information data collection, in particular to a surveying and mapping geographic information data collection tool. Background Art

[0002] Surveying and mapping geographic information data collection is used for water quality testing and sampling of water resources such as lakes and reservoirs. A barrel-shaped water sampler is often used. The characteristic of this water sampler is that both the top and bottom ends have a cover that can only be opened upwards. When the water sampler falls in the water, the water pushes the two covers upwards, and the water flows freely in the water sampler. When the water sampler is lifted upwards, the water presses the two covers downwards to obtain samples.

[0003] The water samplers designed in the above series all need to be lowered and recovered using a lifting rope. For sampling water at depths of tens or even hundreds of meters, it is necessary to carry and operate a rope that is tens or hundreds of meters long, which is obviously inconvenient to operate. Summary of the Invention

[0004] In view of the above or existing problems in the prior art where a rope-tethered water sampler needs to be carried and operated with a large amount of ropes when sampling deep water, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a surveying and mapping geographic information data collection tool.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a surveying and mapping geographic information data collection tool, comprising a water sampler for collecting deep water, and a recovery mechanism disposed at the top of the water sampler, the recovery mechanism being used to inflate the water sampler at a set sampling depth to recover the water sampler;

[0007] The recovery mechanism includes: a shell, which is provided with a pressure chamber for setting the diving depth of the water sampler and an assembly groove for connecting a disposable gas cylinder, and the pressure chamber and the assembly groove are connected through a cross-shaped airway; a valve column, which is sealed and plugged into the airway, and the two ends of the valve column are respectively connected to the inside of the pressure chamber and the outside of the shell; an airbag, which is folded, and the inflation port of the airbag is sealed and connected to one end of the airway away from the assembly groove and the valve column.

[0008] As a preferred solution of the surveying and mapping geographic information data acquisition tool of the present invention, wherein: the assembly groove is cylindrical, and the bottom diameter of the assembly groove is smaller than the groove mouth, the assembly groove is located on the inner wall of the large diameter section and is provided with a thread at one end close to the small diameter section, the assembly groove is located on the non-threaded part of the inner wall of the large diameter section and is provided with a secondary sealing ring, and the assembly groove is located on the annular step at the junction of the large diameter section and the small diameter section.

[0009] As a preferred solution of the surveying and mapping geographic information data collection tool of the present invention, wherein: a sealing sleeve is fastened with a thread in the assembly groove, and the tail end of the gas cylinder is sleeved in the sealing sleeve, the outer wall of the sealing sleeve is sealed with the secondary sealing ring, and the open annular end face of the sealing sleeve is squeezed and sealed with the main sealing ring.

[0010] As a preferred solution of the surveying and mapping geographic information data collection tool of the present invention, a sharp cone is fixed to the bottom of the assembly groove along its axial direction for puncturing the gas cylinder.

[0011] As a preferred solution of the surveying and mapping geographic information data acquisition tool of the present invention, wherein: the shell thread seal is fastened with an inflation joint, and the tail end of the inflation joint is connected to the pressure chamber.

[0012] As a preferred solution of the surveying and mapping geographic information data acquisition tool of the present invention, the valve column is provided with an annular groove 1 on its peripheral wall, and when the annular groove 1 moves with the valve column to the cross intersection of the airway, it connects the channel of the airway perpendicular to the valve column direction.

[0013] As a preferred solution of the surveying and mapping geographic information data acquisition tool of the present invention, the pressure chamber is cylindrical and has a slider slidably sleeved thereon, the slider is fixedly connected to the valve stem, and the two ends of the slider are connected by openings.

[0014] As a preferred solution of the surveying and mapping geographic information data acquisition tool of the present invention, wherein: the peripheral wall of the slider is provided with an annular groove 2, and the depth of the annular groove 2 located on the side close to the valve stem is greater than that on the other side, and the annular groove 2 is sleeved with an O-ring, and the O-ring is sleeved in the deep area of ​​the annular groove 2, and the O-ring is in contact with the inner peripheral wall of the pressure chamber.

[0015] As a preferred solution of the surveying and mapping geographic information data collection tool of the present invention, wherein: the top cover plate of the water sampler is fixed with a triangular bracket, and the shell is fixedly connected to the middle part of the bracket.

[0016] As a preferred solution of the surveying and mapping geographic information data collection tool of the present invention, the airbag is folded and stored in the shell, and the shell is fixedly connected to the housing, and the shell is coaxial with the water sampler.

[0017] The beneficial effects of the surveying and mapping geographic information data collection tool of the present invention are as follows: the device can preset the air pressure in the pressure chamber, and use the pressure difference between the water depth and the water pressure in the pressure chamber and the recovery mechanism as a trigger condition. Through the special valve group structure composed of components such as the valve column and the cross-shaped air channel, it can realize the sampling and recovery of the water sampler at a specified depth. The water sampler no longer needs to be tied with a rope, and can be directly put in, automatically sampled, sunk by itself, and automatically floated up for recovery. In addition to the disposable small gas cylinder, the recovery mechanism is not only reusable, but also simple and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a structural diagram of the surveying and mapping geographic information data collection tool.

[0020] Figure 2 This is a cross-sectional view of the structure of the water sampler after removing the recovery mechanism.

[0021] Figure 3 This is a cross-sectional view of the structure of the recovery mechanism.

[0022] Figure 4 This is a structural anatomy diagram of the recycling mechanism.

[0023] Figure 5 for Figure 4 A magnified view of the structure at point A.

[0024] Figure 6 for Figure 5 A magnified view of the structure at point B.

[0025] In the figure: 100, water sampler; 101, bracket; 200, recovery mechanism; 201, shell; 202, airbag; 203, inflation connector; 204, valve column; 205, cone; 206, sealing sleeve; 207, secondary sealing ring; 208, main sealing ring; 209, slider; 210, O-ring; 211, sleeve; 212, retaining ring; 201a, pressure chamber; 201b, assembly groove; 201c, airway; 204a, annular groove 1; 209a, annular groove 2; 300, gas cylinder. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] Example, see Figures 1 to 6 , this embodiment provides a surveying and mapping geographic information data collection tool, such as Figure 1 As shown, it includes a water sampler 100 for collecting deep water, and also includes a recovery mechanism 200 arranged at the top of the water sampler 100, the recovery mechanism 200 is used to inflate the water sampler 100 at a set sampling depth to recover the water sampler 100; Figure 3 and Figure 4As shown, the recovery mechanism 200 includes: a shell 201, the shell 201 is provided with a pressure chamber 201a for setting the diving depth of the water sampler 100 and an assembly groove 201b for connecting the disposable gas cylinder 300, and the pressure chamber 201a and the assembly groove 201b are connected by a cross-shaped airway 201c; a valve column 204, the valve column 204 is sealed and plugged into the airway 201c, and the two ends of the valve column 204 are respectively connected to the inside of the pressure chamber 201a and the outside of the shell 201; the airbag 202 is folded, and the inflation port of the airbag 202 is sealed and connected to one end of the airway 201c away from the assembly groove 201b and the valve column 204.

[0028] Specifically, such as Figure 4 As shown, the assembly groove 201b is cylindrical, and the bottom diameter of the assembly groove 201b is smaller than the groove mouth, and the assembly groove 201b is provided with a thread at one end of the inner wall of the large diameter section near the small diameter section, and the assembly groove 201b is provided with a secondary sealing ring 207 at the non-threaded part of the inner wall of the large diameter section, and the assembly groove 201b is provided with a main sealing ring 208 on the annular step at the junction of the large diameter section and the small diameter section, the inner thread of the assembly groove 201b is fastened with a sealing sleeve 206, and the tail end of the gas cylinder 300 is sleeved in the sealing sleeve 206, the outer wall of the sealing sleeve 206 is connected to the secondary sealing ring 207 and the sealing sleeve 206, and the open annular end face of the sealing sleeve 206 is squeezed and sealed with the main sealing ring 208, and the bottom of the assembly groove 201b is fixed with a sharp cone 205 along its axial direction for puncturing the gas cylinder 300.

[0029] like Figure 5 As shown, the housing 201 is threadedly sealed and fastened with an inflation connector 203, and the tail end of the inflation connector 203 is connected to the pressure chamber 201a. The peripheral wall of the valve stem 204 is provided with an annular groove 204a. When the annular groove 204a moves with the valve stem 204 to the cross intersection of the air channel 201c, the air channel 201c is connected to the channel perpendicular to the valve stem 204. The pressure chamber 201a is cylindrical and is slidably sleeved with a slider 209. The slider 209 is fixedly connected to the valve stem, and the two ends of the slider 209 are connected by openings. Figure 6 As shown, the peripheral wall of the slider 209 is provided with an annular groove 209a, and the depth of the annular groove 209a on the side close to the valve stem is greater than that on the other side, and the annular groove 209a is sleeved with an O-ring 210, which is sleeved in the deep area of ​​the annular groove 209a and contacts the inner peripheral wall of the pressure chamber 201a.

[0030] like Figure 2 As shown, the top cover of the water sampler 100 is fixed with a triangular bracket 101, and the housing 201 is fixedly connected to the middle of the bracket 101, as shown in FIG. Figure 3 As shown, the airbag 202 is folded and stored in the casing 211 , and the casing 211 is fixedly connected to the housing 201 , and the casing 211 and the water sampler 100 are coaxial.

[0031] The present invention provides a surveying and mapping geographic information data collection tool, in particular, provides a recovery mechanism 200 for setting the sampling depth of a water sampler 100 and automatically recovering the sample after sampling. The core principle of the recovery mechanism 200 is to pre-fill a pressure chamber 201a with a certain air pressure through an air filling joint 203 on the water surface. The size of the air pressure corresponds to the pressure of the target water depth of the water sampler 100. When the water sampler 100 is deployed and sinks to a point where the water pressure is slightly greater than the pressure of the pressure chamber 201a, under the action of the pressure difference, the water sampler 100 is automatically recovered. Figure 5 As shown, the pressure difference acts on the end face of the valve stem 204 to push the valve stem 204 into the pressure chamber 201a. When the annular groove 204a on the valve stem 204 moves to the cross-shaped intersection of the air channel 201c, the part of the air channel 201c between the assembly groove 201b and the air bag 202 is connected, so that the gas cylinder 300 releases compressed gas to the air bag 202 through the air channel 201c. The volume of the air bag 202 expands in the water, and the buoyancy increases, so that the water sampler 100 is able to float.

[0032] To achieve the above functions, the present invention also involves the following technical details:

[0033] First, regarding the effect of the valve stem 204 invading the pressure chamber 201a on the working sensitivity of the recovery mechanism 200, according to the brief description of the working principle mentioned above, the valve stem 204 will move a certain distance into the pressure chamber 201a under the pressure difference, so that the volume of the pressure chamber 201a becomes smaller, thereby making the pressure in the pressure chamber 201a and the water pressure of the recovery mechanism 200 reach a balance. This involves a valve structure opening problem, such as Figure 5 As shown, when the annular groove 1 204a moves as a whole to the cross-shaped intersection of the air channel 201c, the valve structure is opened to the maximum, and the air supply flow to the air bag 202 is the largest and the speed is the fastest. The recovery mechanism 200 can quickly prevent the water sampler 100 from sinking further, so that the water sampler 100 can accurately collect water samples at the target depth.

[0034] Therefore, the diameter of the valve stem 204 is designed to be relatively small, while the volume of the pressure chamber 201a is designed to be as large as possible within the limited volume of the housing 201. Thus, for a given movement distance of the valve stem 204, the volume of the valve stem 204 that intrudes into the pressure chamber 201a is relatively small, and the impact on the pressure differential between the pressure chamber 201a and the water pressure is also relatively small. This enables the valve stem 204 to quickly respond and open the valve structure to its maximum opening when an initial pressure differential is generated.

[0035] like Figure 5 As shown, a retaining spring 212 is further provided on the left side of the valve stem 204. When the slider 209 contacts the retaining spring 212, the opening of the valve structure reaches its maximum.

[0036] Secondly, regarding the maintenance of the inflation state of the airbag 202 by the recovery mechanism 200 when the water sampler 100 initially floats, referring to the technical content in "One", when the sensitivity of the recovery mechanism 200 is high, the recovery mechanism 200 begins to float, and the pressure in the pressure chamber 201a will quickly recover to a pressure higher than the water pressure of the water depth where the device is located. The pressure difference at this time will cause the valve column 204 to move away from the pressure chamber 201a, and the opening of the valve structure will quickly decrease and close. However, due to the existence of water pressure, the airbag 202 is in a high water pressure environment, and the gas cylinder 300 cannot fully fill the compressed gas stored in it into the airbag 202. Therefore, it is hoped that the valve structure of the valve column 204 has a certain closing delay, but this is exactly the opposite of the requirement when the water sampler 100 sinks. When the water sampler 100 fails to sink to the specified depth, the valve structure of the valve column 204 cannot be opened in advance;

[0037] Therefore, the present invention is designed to add a slider 209, such as Figure 5 and Figure 6 As shown, since the pressure chamber 201a is dry, there is good friction between the O-ring 210 and the inner wall of the pressure chamber 201a. When the valve stem 204 moves in the closing direction, the O-ring 210 is squeezed into the shallower portion of the annular groove 209a, thereby further increasing the squeezing force and friction between the O-ring 210 and the pressure chamber 201a. As a result, the O-ring 210 slows down the movement of the valve stem 204, prolonging the closing time of the valve structure between the valve stem 204 and the airway 201c. As the water pressure on the buoyant airbag 202 of the water sampler 100 decreases, more compressed gas from the gas cylinder 300 is delivered into the airbag 202, accelerating the buoyancy of the device.

[0038] The shallow groove portion of the second annular groove 209a still has a certain depth, which prevents the O-ring 210 from being completely stuck between the slider 209 and the inner wall of the pressure chamber 201a. The slider 209 also has a limiting function to prevent the valve stem 204 from slipping out of the air passage 201c.

[0039] Third, the assembly and use of the gas cylinder 300, such as Figure 3 As shown, before the water sampler 100 is deployed, the gas cylinder 300 is pre-broken by the squeezing force of the sealing sleeve 206 and the sharp cone 205, and the compressed gas in the gas cylinder 300 is released in advance into the assembly groove 201b to ensure the reliability of the compressed gas supply. The technical problem is that the sharp cone 205 will puncture the gas cylinder 300 during the process of tightening the sealing sleeve 206, so the assembly groove 201b needs to be sealed during the operation;

[0040] like Figure 4As shown, before the gas cylinder 300 contacts the pointed cone 205, the outer wall of the sealing sleeve 206 is first sleeved and sealed with the secondary sealing ring 207. Since the sealing sleeve 206 needs to slide relative to the secondary sealing ring 207, the pressure between the secondary sealing ring 207 and the sealing sleeve 206 is limited, and the sealing performance that can be provided is also limited. It is used as a temporary seal. When the sealing sleeve 206 is screwed into place, the pointed cone 205 pierces the gas cylinder 300. At this time, the open annular end face of the sealing sleeve 206 will press the main sealing ring 208, and a larger pressure is provided by threaded tightening, so that reliable sealing performance is obtained between the sealing sleeve 206, the main sealing ring 208 and the shell 201.

[0041] Fourthly, regarding the airbag 202, the airbag 202 is folded in advance and stuffed into the casing 211. Firstly, it is for easy storage, secondly, it prevents the airbag 202 from increasing the water resistance of the water sampler 100 when sinking, and thirdly, the position of the airbag 202 is set on the axis position of the water sampler 100 through the casing 211, so as to avoid the water sampler 100 from tilting when floating up.

[0042] In summary, the device can preset the air pressure of the pressure chamber 201a, and use the pressure difference between the water depth of the pressure chamber 201a and the water pressure of the recovery mechanism 200 as a trigger condition. Through the special valve group structure composed of components such as the valve column 204 and the cross-shaped air channel 201c, the water sampler 100 can be sampled at a specified depth and recovered at a specified depth. The water sampler 100 no longer needs to be tied with a rope, and can be directly put into use, automatically sampled, sunk by itself, and automatically floated up for recovery. In addition to the disposable small gas bottle 300, the recovery mechanism 200 is not only reusable, but also simple and convenient to operate.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A surveying and mapping geographic information data collection tool, comprising a water sampler (100) for collecting deep water, characterized in that: It also includes a recovery mechanism (200) disposed at the top of the water sampler (100), wherein the recovery mechanism (200) is used to recover the water sampler (100) by inflating at a set sampling depth; The recovery mechanism (200) comprises: A shell (201), wherein the shell (201) is provided with a pressure chamber (201a) for setting the diving depth of the water sampler (100) and an assembly groove (201b) for connecting a disposable gas cylinder (300), wherein the pressure chamber (201a) and the assembly groove (201b) are connected via a cross-shaped airway (201c); a valve column (204), wherein the valve column (204) is sealed and plugged into the airway (201c), and the two ends of the valve column (204) are respectively connected to the inside of the pressure chamber (201a) and the outside of the shell (201); an airbag (202), wherein the airbag (202) is folded, and the inflation port of the airbag (202) is sealed and connected to one end of the airway (201c) away from the assembly groove (201b) and the valve column (204).

2. The surveying and mapping geographic information data acquisition tool according to claim 1, characterized in that: The assembly groove (201b) is cylindrical, and the groove bottom diameter of the assembly groove (201b) is smaller than the groove opening; the assembly groove (201b) is provided with a thread at one end of the inner wall of the large diameter section close to the small diameter section; the assembly groove (201b) is provided with a secondary sealing ring (207) at a non-threaded portion of the inner wall of the large diameter section; and the assembly groove (201b) is provided with a main sealing ring (208) on an annular step at the junction of the large diameter section and the small diameter section.

3. The surveying and mapping geographic information data acquisition tool according to claim 2, characterized in that: The internal thread of the assembly groove (201b) is fastened with a sealing sleeve (206), and the tail end of the gas cylinder (300) is sleeved in the sealing sleeve (206), the outer wall of the sealing sleeve (206) is connected to the secondary sealing ring (207) and the sealing sleeve (206), and the open annular end surface of the sealing sleeve (206) is squeezed and sealed with the main sealing ring (208).

4. The surveying and mapping geographic information data acquisition tool according to claim 3, characterized in that: A pointed cone (205) is fixed to the bottom of the assembly groove (201b) along its axial direction for puncturing the gas cylinder (300).

5. The surveying and mapping geographic information data acquisition tool according to claim 1, characterized in that: The housing (201) is threadedly sealed and fastened with an inflation joint (203), and the tail end of the inflation joint (203) is connected to the pressure chamber (201a).

6. The surveying and mapping geographic information data acquisition tool according to claim 1, characterized in that: The peripheral wall of the valve column (204) is provided with an annular groove (204a). When the annular groove (204a) moves with the valve column (204) to the cross intersection of the air channel (201c), the air channel (201c) is connected to the channel perpendicular to the valve column (204).

7. The surveying and mapping geographic information data acquisition tool according to claim 6, characterized in that: The pressure chamber (201a) is cylindrical and is slidably sleeved with a slider (209). The slider (209) is fixedly connected to the valve stem, and holes are opened between the two ends of the slider (209) for communication.

8. The surveying and mapping geographic information data acquisition tool according to claim 7, characterized in that: The peripheral wall of the slider (209) is provided with an annular groove 2 (209a), and the depth of the annular groove 2 (209a) on the side close to the valve stem is greater than that on the other side thereof, and the annular groove 2 (209a) is sleeved with an O-ring (210), and the O-ring (210) is sleeved in the deep area of ​​the annular groove 2 (209a), and the O-ring (210) contacts the inner peripheral wall of the pressure chamber (201a).

9. The surveying and mapping geographic information data acquisition tool according to claim 1, characterized in that: A triangular bracket (101) is fixed to the top cover plate of the water sampler (100), and the housing (201) is fixedly connected to the middle portion of the bracket (101).

10. The surveying and mapping geographic information data collection tool according to claim 9, characterized in that: The air bag (202) is folded and stored in the casing (211), and the casing (211) and the housing (201) are fixedly connected, and the casing (211) and the water sampler (100) are coaxial.

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