Self-sealing piston type bottom mud sampler capable of adjusting mud sampling amount

Abstract

The utility model relates to the technical field of sampling equipment, and discloses a self-sealing piston type sediment sampler capable of adjusting sediment sampling quantity, which comprises a sampler handle, a connecting extension rod, a sampling part assembly, a piston type connecting rod assembly and a self-sealing assembly, one end of the connecting extension rod is in threaded connection with the side wall of the sampler handle through a threaded sleeve; the collecting part assembly comprises a collecting cylinder, the top of the collecting cylinder is fixedly connected with a top sleeve, and the bottom of the collecting cylinder is fixedly provided with a beveled ground breaker. By arranging the structures such as a bottom piston, a piston connecting rod and a sleeve bolt hole, a user can adjust the area, located in the top sleeve, of the piston connecting rod according to the thickness of a bottom mud layer; the position of the bottom piston is further adjusted, so that a user can adjust the mud taking amount according to the thickness of a bottom mud layer, and the piston connecting rod drives the bottom piston to move in the vertical direction, so that the integrity of the longitudinal section of a sampled sample can be preserved.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling equipment, in particular to a self-sealing piston-type bottom mud sampler capable of adjusting the mud sampling amount. Background Art

[0002] Coal mining subsidence water is formed due to surface collapse caused by coal mining. At present, more than 600 km of subsidence water has been formed in the Lianghuai mining area. 2 , and the water area accounts for 50% to 70%. The coal mining subsidence area has changed the original topography and microbial community characteristics. Bottom mud sampling is an important means for people to understand the composition structure of water microbial communities and the migration of water pollutants.

[0003] In subsided waters, the thickness of the bottom mud varies greatly due to the different subsidence time and subsidence area, and there is usually a thicker clay layer under the silt layer. In waters with a shorter subsidence period, the silt layer is thinner, and the grabbing mud sampling method is cumbersome and inconvenient to operate and to a certain extent destroys the integrity of the longitudinal profile of the sample. In addition, the current columnar mud sampler cannot adjust the mud sampling amount according to the thickness of the bottom mud layer. The drilling mud sampler can collect columnar bottom mud samples, but drilling is difficult. In waters with a longer subsidence period, the bottom mud layer in the silt layer is thicker, the sampler is difficult to seal, and the sample is easily lost under the erosion of water.

[0004] Therefore, we proposed a self-sealing piston-type sediment sampler with adjustable mud sampling volume to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a self-sealing piston-type sediment sampler with adjustable mud sampling volume, so as to solve the problems that the mud sampler proposed in the above background technology cannot adjust the mud sampling volume according to the thickness of the sediment layer, and easily destroys the integrity of the longitudinal section of the sample when sampling mud; when the sediment layer is thick, the sampler is difficult to seal, resulting in sample loss.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-sealing piston-type sediment sampler with adjustable mud sampling volume, comprising a sampler handle, a connecting extension rod, a collection part assembly, a piston-type connecting rod assembly and a self-sealing assembly, wherein one end of the connecting extension rod is threadedly connected to the side wall of the sampler handle through a threaded sleeve;

[0007] The collecting part assembly includes a collecting tube, a top sleeve is fixedly connected to the top of the collecting tube, and an oblique-mouth soil breaker is fixedly installed at the bottom of the collecting tube;

[0008] The piston-type connecting rod assembly includes a piston connecting rod, the inner wall of one end of the piston connecting rod is threadedly connected to the threaded interface of the other end of the connecting extension rod, the other end of the piston connecting rod is inserted into the interior of the collection tube through the top sleeve, and the bottom of the piston connecting rod is fixedly connected to the bottom piston;

[0009] The self-sealing assembly comprises a self-sealing sleeve, which is slidably connected to the outer wall of the collection tube, and the bottom of the self-sealing sleeve is rotatably connected to the bottom cover plate.

[0010] Preferably, the side wall of the bottom piston is fixedly connected with a rubber sealing ring, and the outer wall of the rubber sealing ring and the inner wall of the collection tube are sealed and slidable.

[0011] Preferably, a sleeve bolt hole is provided on the side wall of the top sleeve, and a plurality of piston rod bolt holes are provided on the side wall of the piston connecting rod at equal intervals, and bolts are threadedly connected inside the sleeve bolt hole and the adjacent piston rod bolt holes.

[0012] Preferably, the side wall of the collecting tube is fixedly connected to a limiter.

[0013] Preferably, a self-sealing push rod is fixedly connected to the top of the self-sealing sleeve.

[0014] Preferably, a torsion spring is fixedly installed on the inner wall of the self-sealing sleeve, one end of the torsion spring is fixedly connected to the inner wall of the self-sealing sleeve, and the other end of the torsion spring is fixedly connected to the side wall of the bottom cover plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. In the present invention, by providing structures such as the bottom piston, piston connecting rod and sleeve bolt hole, the user can adjust the area of ​​the piston connecting rod located inside the top sleeve according to the thickness of the bottom mud layer, and then adjust the position of the bottom piston, so that the user can adjust the mud sampling amount according to the thickness of the bottom mud layer. In addition, since the piston connecting rod drives the bottom piston to move in the vertical direction, the integrity of the longitudinal section of the sample after sampling can be preserved.

[0017] 2. In the utility model, by setting structures such as a limiter, a bottom cover and a torsion spring, after the sampling is completed, the bottom cover moves, and can rotate under the elastic action of the torsion spring to block the oblique-mouth breaker, thereby completing the sealing of the oblique-mouth breaker. The bottom mud collected by the collection tube will not fall out of the collection tube, and even when the bottom mud layer is thick in waters with a long period of subsidence, the oblique-mouth breaker can still be sealed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic structural diagram of the piston connecting rod in the utility model;

[0020] Figure 3 It is a structural schematic diagram of the self-sealing component in the utility model.

[0021] In the figure: 1. Sampler handle; 2. Connecting extension rod; 3. Top sleeve; 4. Collection tube; 5. Oblique-mouth breaker; 6. Piston connecting rod; 7. Sleeve bolt hole; 8. Bottom piston; 9. Rubber sealing ring; 10. Limiter; 11. Self-sealing push rod; 12. Self-sealing sleeve; 13. Torsion spring; 14. Bottom cover; 15. Piston rod bolt hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figure 1 - Figure 2 A self-sealing piston-type sediment sampler with adjustable mud sampling volume includes a sampler handle 1, a connecting extension rod 2, a collection part assembly, a piston connecting rod assembly and a self-sealing assembly. One end of the connecting extension rod 2 is threadedly connected to the side wall of the sampler handle 1 through a threaded sleeve. When the length of the connecting extension rod 2 is not enough to work in water areas, the length of the entire device can be appropriately extended by using a combination of multiple connecting extension rods 2.

[0024] The collecting part assembly includes a collecting tube 4, the top of which is fixedly connected to a top sleeve 3, and the bottom of which is fixedly installed an oblique-mouth breaker 5. The side wall of the feed port of the oblique-mouth breaker 5 is relatively sharp, which makes it easier to break the layers of bottom mud and take out materials.

[0025] The piston-type connecting rod assembly includes a piston connecting rod 6, the inner wall of one end of the piston connecting rod 6 is threadedly connected to the threaded interface of the other end of the connecting extension rod 2, and the other end of the piston connecting rod 6 is inserted into the collection tube 4 through the top sleeve 3, so that the connecting extension rod 2 and the collection tube 4 can be connected, so that the entire device can be moved by moving the connecting extension rod 2. The bottom of the piston connecting rod 6 is fixedly connected to the bottom of the piston connecting rod 6. After the bottom piston 8 comes into contact with the external bottom mud, it can have a strong suction force to absorb the external bottom mud.

[0026] The self-sealing assembly includes a self-sealing sleeve 12, which is slidably connected to the outer wall of the collection tube 4. There is a certain damping effect between the self-sealing sleeve 12 and the side wall of the collection tube 4, so that the self-sealing sleeve 12 will not move when it is not subjected to a large external force. The bottom of the self-sealing sleeve 12 is rotatably connected to the bottom cover plate 14, and the bottom cover plate 14 slides against the side wall of the collection tube 4 in the initial state.

[0027] A rubber sealing ring 9 is fixedly connected to the side wall of the bottom piston 8. The outer wall of the rubber sealing ring 9 and the inner wall of the collection tube 4 are sealed and slided. When the bottom mud enters the collection tube 4, the bottom mud can be sucked up like a syringe sucking up medicine, so that the bottom mud can be sampled more conveniently.

[0028] A sleeve bolt hole 7 is provided on the side wall of the top sleeve 3, and a plurality of piston rod bolt holes 15 are provided on the side wall of the piston connecting rod 6 at equal intervals. Bolts are threadedly connected to the sleeve bolt hole 7 and the adjacent piston rod bolt holes 15, so that the length of the piston connecting rod 6 inside the collection tube 4 can be adjusted, and the position of the bottom piston 8 inside the collection tube 4 can be adjusted, so that the collection volume inside the collection tube 4 can be effectively adjusted.

[0029] In this embodiment: When it is necessary to sample the bottom mud, the length of the connecting extension rod 2 is first adjusted according to the thickness of the bottom mud in the area to be sampled, and then the entire device is inserted into the bottom mud. At this time, due to the effect of the oblique-mouthed breaker 5, the entire device can be inserted into the bottom mud more conveniently. When the device is inserted into the bottom mud, the bolt is rotated again, and the bolt moves out of the adjacent piston rod bolt hole 15, so that the piston connecting rod 6 can move freely. At this time, the piston connecting rod 6 is moved, and the piston connecting rod 6 can drive the bottom piston 8 and the rubber sealing ring 9 to move. Since the oblique-mouthed breaker 5 is inserted into the bottom mud, the volume of the area inside the collection tube 4 located at the bottom of the bottom piston 8 changes. In order to maintain the balance of air pressure, the bottom mud is sucked into the collection tube 4, and then the bolt is inserted into the adjacent piston rod bolt hole 15 to limit the piston connecting rod 6, thereby completing the bottom mud sampling process. The amount of mud taken can be adjusted according to the thickness of the bottom mud layer. At this time, since the bottom piston 8 moves in the vertical direction, the integrity of the longitudinal section of the sample after sampling can be preserved.

[0030] Example 2: This example is an improvement based on Example 1. For details, please refer to Figure 1 - Figure 3 The side wall of the collecting tube 4 is fixedly connected to a limiter 10, which can limit the movement trajectory of the self-sealing sleeve 12 so that the self-sealing sleeve 12 will not move excessively.

[0031] The top of the self-sealing sleeve 12 is fixedly connected to a self-sealing push rod 11, which allows the user to move the self-sealing sleeve 12 more conveniently, and the top of the self-sealing push rod 11 can also be combined with multiple sections of the self-sealing push rod 11 to increase the length of the self-sealing push rod 11.

[0032] A torsion spring 13 is fixedly installed on the inner wall of the self-sealing sleeve 12, one end of the torsion spring 13 is fixedly connected to the inner wall of the self-sealing sleeve 12, and the other end of the torsion spring 13 is fixedly connected to the side wall of the bottom cover 14, so that in the initial state, the bottom cover 14 is against the side wall of the collecting tube 4, and drives the torsion spring 13 to deform. When the self-sealing sleeve 12 is against the side wall of the limiter 10, the bottom cover 14 moves to the bottom of the oblique-mouthed earth breaker 5, and under the elastic action of the torsion spring 13, the bottom cover 14 rotates and blocks the oblique-mouthed earth breaker 5, so that the bottom mud collected by the collecting tube 4 will not fall out of the collecting tube 4, and when the bottom mud layer is thick in waters with a long period of subsidence, the oblique-mouthed earth breaker 5 can still be sealed.

[0033] In this embodiment: when the bottom mud sampling is completed, in order to prevent the collected bottom mud from falling out of the collecting tube 4, the user pushes the self-sealing push rod 11, and the self-sealing push rod 11 drives the self-sealing sleeve 12 to move. When the self-sealing sleeve 12 is against the side wall of the limiter 10, the bottom cover 14 moves to the bottom of the oblique-mouth breaker 5, and under the elastic action of the torsion spring 13, the bottom cover 14 rotates and blocks the oblique-mouth breaker 5, so that the bottom mud collected by the collecting tube 4 will not fall out of the collecting tube 4. When the entire device moves to the appropriate position for discharging, the self-sealing push rod 11 is moved again to reset the bottom cover 14, and then the sampled bottom mud is taken out.

[0034] Working principle: When sampling sediment, first hold the sampler handle 1 and move the entire device to the interior of the sediment layer to be sampled. Insert the oblique-mouth breaker 5 into the sediment layer. Then rotate the bolt so that the bolt moves out of the adjacent piston rod bolt hole 15. Part of it is still threadedly connected to the sleeve bolt hole 7. Then the piston connecting rod 6 can move, and the piston connecting rod 6 drives the bottom piston 8 and the rubber sealing ring 9 to move, thereby sucking and sampling the sediment. The sucked sediment moves to the interior of the collection tube 4. When the sampling is completed, the bolt is threadedly connected to the adjacent piston rod bolt hole 15, thereby tightening the piston connecting rod. The position of the rod 6 is limited, and the self-sealing push rod 11 is moved at this time, and the self-sealing push rod 11 drives the self-sealing sleeve 12 to move. When the self-sealing sleeve 12 is in contact with the limiter 10, the bottom cover 14 rotates under the elastic action of the torsion spring 13, and then the oblique-mouth breaker 5 is blocked, so that when the entire device is out of contact with the bottom mud layer, the bottom mud inside the collection tube 4 will not fall out of the collection tube 4. When the entire device is moved to the appropriate position for discharging, the self-sealing push rod 11 is moved again to reset the bottom cover 14, and then the bottom mud inside the collection tube 4 is taken out, thereby completing the entire bottom mud sampling process.

[0035] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A self-sealing piston-type sediment sampler with adjustable sampling volume, comprising a sampler handle (1), a connecting extension rod (2), a collection part assembly, a piston-type connecting rod assembly and a self-sealing assembly, characterized in that: One end of the connecting extension rod (2) is threadedly connected to the side wall of the sampler handle (1) through a threaded sleeve; The collecting part assembly comprises a collecting tube (4), the top of the collecting tube (4) is fixedly connected to a top sleeve (3), and the bottom of the collecting tube (4) is fixedly installed with an oblique-mouth soil breaker (5); The piston-type connecting rod assembly comprises a piston connecting rod (6), the inner wall of one end of the piston connecting rod (6) is threadedly connected to a threaded interface of the other end of the connecting extension rod (2), the other end of the piston connecting rod (6) is inserted into the interior of the collection tube (4) through the top sleeve (3), and the bottom of the piston connecting rod (6) is fixedly connected to a bottom piston (8); The self-sealing assembly comprises a self-sealing sleeve (12), the self-sealing sleeve (12) is slidably connected to the outer wall of the collection tube (4), and the bottom of the self-sealing sleeve (12) is rotatably connected to a bottom cover plate (14).

2. A self-sealing piston-type sediment sampler with adjustable sediment sampling volume according to claim 1, characterized in that: The side wall of the bottom piston (8) is fixedly connected with a rubber sealing ring (9), and the outer wall of the rubber sealing ring (9) and the inner wall of the collection tube (4) are sealed and slidable.

3. The self-sealing piston-type sediment sampler with adjustable sediment sampling volume according to claim 2, characterized in that: The side wall of the top sleeve (3) is provided with a sleeve bolt hole (7), and the side wall of the piston connecting rod (6) is provided with a plurality of piston rod bolt holes (15) at equal intervals. Bolts are threadedly connected inside the sleeve bolt hole (7) and the adjacent piston rod bolt holes (15).

4. The self-sealing piston-type sediment sampler with adjustable sediment sampling volume according to claim 3, characterized in that: The side wall of the collecting tube (4) is fixedly connected to a limiter (10).

5. The self-sealing piston-type sediment sampler with adjustable sediment sampling volume according to claim 4, characterized in that: The top of the self-sealing sleeve (12) is fixedly connected with a self-sealing push rod (11).

6. The self-sealing piston-type sediment sampler with adjustable sediment sampling volume according to claim 5, characterized in that: A torsion spring (13) is fixedly installed on the inner wall of the self-sealing sleeve (12), one end of the torsion spring (13) is fixedly connected to the inner wall of the self-sealing sleeve (12), and the other end of the torsion spring (13) is fixedly connected to the side wall of the bottom cover plate (14).

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