Sediment sampling device for hydraulic engineering

Abstract

The sediment sampling device for the water conservancy project comprises an extraction mechanism, a spiral conveyor and a screening mechanism, the extraction mechanism and the spiral conveyor are both installed above the screening mechanism, and the output end of the extraction mechanism communicates with the input end of the spiral conveyor; the output end of the spiral conveyor communicates with the input end of the screening mechanism. Through the arrangement of the extraction mechanism, the spiral conveyor and the screening mechanism, mixing of water in silt can be reduced after the silt is sampled and collected, mixing of large particulate matter impurities in silt samples can be reduced, further treatment needed by workers after the silt is collected and sampled is reduced, the convenience of sampling operation is improved, and the working efficiency is improved. Through the cooperative arrangement of a second screen and a convex roller, the water mixed in the silt can be better reduced by extruding the silt when the water is screened after the silt is sampled, and the problem that the water body is difficult to screen due to the accumulation of the sample on the second screen is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of sediment sampling equipment, and in particular to a sediment sampling device for water conservancy projects. Background Art

[0002] In the early stages of water conservancy projects, it is necessary to take samples of the water environment to be developed, such as water bodies and riverbed sediment. When sampling riverbed sediment, general devices cannot separate the sediment from water very well, which makes it more difficult to recover it later.

[0003] In the related art, a Chinese patent with the authorization announcement number CN216695702U proposes a sediment sampling device suitable for water conservancy projects. Through the separation device, the sediment and water in the sediment extracted by the sludge pump can be separated. When the sediment enters the separation box from the mud inlet pipe, it will be filtered by the filter net, and the water and sediment will be separated. The water falls to the bottom of the separation box, and the sediment is retained on the filter net, achieving the purpose of separating sediment and water, solving the above problems.

[0004] However, the above-mentioned related technologies have the following defects: when the sediment sampling device suitable for water conservancy projects is in use, a large amount of sediment is intercepted above the filter net, which easily makes it difficult for water to pass through the sieve holes on the filter net surface and be screened by the filter net, so that the sediment accumulates on the filter net and affects the effect of separating the sediment and water. Utility Model Content

[0005] In order to improve the problem that a lot of sediment is retained on the filter net, which makes it difficult for water to pass through the sieve holes on the filter net surface and be screened by the filter net, so that the sediment accumulates on the filter net and affects the effect of separating sediment from water, the present application provides a sediment sampling device for water conservancy projects.

[0006] The present application provides a sediment sampling device for water conservancy projects using the following technical solution:

[0007] A sediment sampling device for water conservancy engineering, comprising an extraction mechanism, a screw conveyor and a screening mechanism, wherein the extraction mechanism and the screw conveyor are both installed above the screening mechanism, the output end of the extraction mechanism is communicated with the input end of the screw conveyor, the output end of the screw conveyor is communicated with the input end of the screening mechanism, the screening mechanism comprises a screening chamber, an inlet, a movable cover, two sets of supporting inclined rails, a second screen and a motor, the inlet is formed at the top of the screening chamber and is connected to the screw conveyor, so that the inner cavity of the screening mechanism is connected to the screw conveyor, and the inner cavity of the screw conveyor is connected to the inner cavity of the screening mechanism. The inner cavity of the rotary conveyor is communicated, and an opening communicating with the inner cavity is formed at the right end of the screening chamber. The movable cover can be detachably covered at the opening of the screening chamber. The two groups of supporting inclined rails are respectively formed on the inner walls on both sides opposite to each other of the screening chamber. The second screen is inserted between the two groups of supporting inclined rails, and the right end of the second screen is tilted downward under the limiting support of the two groups of supporting inclined rails. The motor is installed and fixed on the outer wall of the screening chamber, and the output end of the motor is connected to the convex roller, so that the convex roller is driven to rotate and is set above the second screen.

[0008] Furthermore, the convex roller includes a roller body, a connecting shaft and a protrusion, the connecting shaft is formed in the middle of the roller body and is fixedly connected to the motor, the protrusion is formed on the outer wall of the roller body and protrudes outward, the arc-shaped outer wall of the protrusion is tangentially distributed to the upper surface of the second screen, the convex roller is arranged above the middle section of the second screen, and the length from the center of the connecting shaft to the outer wall of the protrusion is smaller than the distance between the middle section of the second screen and the inner wall of the top of the screening chamber.

[0009] Furthermore, the screening mechanism also includes a vibration motor, and the vibration motor is installed and fixed on the outer wall of the screening chamber.

[0010] Furthermore, the extraction mechanism includes a buffer chamber, a protective cover, a mud pump, a first screen and a conical table, the protective cover is formed on the outer wall of the buffer chamber, the mud pump is installed in the inner cavity of the protective cover, and the output end of the mud pump extends into the inner cavity of the buffer chamber, and the first screen is embedded and fixed on the bottom inner wall of the buffer chamber, the conical table is formed at the lower end of the buffer chamber and is connected to the screw conveyor, and the conical table is located directly below the first screen, and the size of the sieve holes on the surface of the first screen is larger than the size of the sieve holes on the surface of the second screen.

[0011] Furthermore, the sediment sampling device for water conservancy projects also includes an extension pipe, the input end of the mud pump penetrates downward through the protective cover, and the input end of the mud pump is connected to the extension pipe.

[0012] Furthermore, the sediment sampling device for water conservancy projects also includes a bracket, the lower end of the bracket is fixedly connected to the screening mechanism, and the upper end of the bracket is fixedly connected to the outer wall of the screw conveyor.

[0013] The beneficial technical effects of the present application are as follows: by setting up the extraction mechanism, the screw conveyor and the screening mechanism, the mixing of water in the sediment after sampling and collection can be reduced, and the mixing of larger particles and impurities in the sediment sample can also be reduced, thereby reducing the further processing required by the staff after the sediment is collected and sampled, and improving the convenience of the sampling operation;

[0014] By cooperating with the second screen and the convex roller, the water mixed in the sediment can be reduced by squeezing the sediment after the sediment sampling when the water is screened out, and the problem of difficult screening of the water body due to the accumulation of samples on the second screen can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a sediment sampling device for a water conservancy project according to an embodiment of the present application;

[0016] Figure 2 It is a schematic diagram of the structure of the extraction mechanism after being cut open in the embodiment of the present application;

[0017] Figure 3 It is a schematic diagram of the structure of the screening mechanism after being cut open in the embodiment of the present application.

[0018] Figure numerals: 10, extraction mechanism; 11, buffer chamber; 12, protective cover; 13, mud pump; 14, first screen; 15, conical table; 20, screw conveyor; 30, bracket; 40, screening mechanism; 41, screening chamber; 42, inlet; 43, movable cover; 44, supporting ramp; 45, second screen; 46, motor; 47, convex roller; 471, roller body; 472, connecting shaft; 473, protrusion; 50, extension tube. DETAILED DESCRIPTION

[0019] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0020] The present application embodiment discloses a sediment sampling device for water conservancy projects. Figure 1The sediment sampling device for water conservancy projects may include an extraction mechanism 10, a screw conveyor 20, a bracket 30, a screening mechanism 40 and an extension pipe 50. The extraction mechanism 10 and the screw conveyor 20 are both installed above the screening mechanism 40. The extraction mechanism 10 is connected to the extension pipe 50 so that it can be extended into the bottom of the water for sampling using the extension pipe 50. The screw conveyor 20 is fixed on the screening mechanism with the auxiliary support of the bracket 30, and the output end of the extraction mechanism 10 is connected to the input end of the screw conveyor 20, and the output end of the screw conveyor 20 is connected to the input end of the screening mechanism 40, so that the screw conveyor can input the sample from the extraction mechanism 10 to the screening mechanism 40, and the sample completes the final moisture screening process in the screening mechanism 40.

[0021] See also Figure 2 The extraction mechanism 10 includes a buffer chamber 11, a protective cover 12, a mud pump 13, a first screen 14 and a conical platform 15. The protective cover 12 is formed on the outer wall of the buffer chamber 11, and the mud pump 13 is installed in the inner cavity of the protective cover 12. The input end of the mud pump 13 penetrates the protective cover 12 downward, and the input end of the mud pump 13 is connected to the extension pipe 50; the output end of the mud pump 13 extends into the inner cavity of the buffer chamber 11, so that the mud pump 13 can input the sediment sample into the buffer chamber 11 after extracting it. The first screen 14 is embedded and fixed on the bottom inner wall of the buffer chamber 11, and the conical platform 15 is formed at the lower end of the buffer chamber 11 and communicated with the screw conveyor 20, and the conical platform 15 is located directly below the first screen 14, so that the sample entering the buffer chamber 11 can be preliminarily filtered by using the sieve holes on the surface of the first screen 14 before being introduced into the screw conveyor 20, so that larger particulate impurities are trapped above it.

[0022] In this embodiment, the screw conveyor 20 can adopt the existing screw conveying equipment on the market. As shown in the figure, the screw conveyor 20 can be driven by the motor and the synchronous transmission structure (such as the transmission belt structure) to make the rotating shaft with the spiral blades on the surface rotate in the conveying tube, and use the rotating spiral blades to push the sample from its input end to the output end and introduce it into the screening mechanism 40. The lower end of the bracket 30 is fixedly connected to the screening mechanism 40, and the upper end of the bracket 30 is fixedly connected to the outer wall of the screw conveyor 20, so as to assist in supporting the conveying tube of the screw conveyor 20.

[0023] See also Figure 3The screening mechanism 40 includes a screening chamber 41, an inlet 42, a movable cover 43, two sets of support ramps 44, a second screen 45 and a motor 46. The inlet 42 is formed at the top of the screening chamber 41 and connected to the screw conveyor 20, so that the inner cavity of the screening mechanism 40 is connected to the inner cavity of the screw conveyor 20, and the sample can be input into the inner cavity of the screening chamber 41 from the inlet 42. An opening connected to its inner cavity is formed at the right end of the screening chamber 41, and the movable cover 43 is detachably covered at the opening of the screening chamber 41, so that the sample can be collected after the movable cover 43 is removed. The two sets of support ramps 44 are respectively formed on the inner walls of the screening chamber 41 on both sides opposite to each other, and the second screen 45 is inserted between the two sets of support ramps 44, and the right end of the second screen 45 is tilted downward under the limit support of the two sets of support ramps 44, so that the sediment sample can slide to the right on the inclined second screen 45 after being input into the inner cavity of the screening chamber 41. The motor 46 is fixedly mounted on the outer wall of the screening chamber 41, and the output end of the motor 46 is connected to the convex roller 47, so that the convex roller 47 is driven to rotate and is arranged above the second screen 45. The convex roller 47 includes a roller body 471, a connecting shaft 472 and a protrusion 473. The connecting shaft 472 is formed in the middle of the roller body 471 and is fixedly connected to the motor 46. The protrusion 473 is formed on the outer wall of the roller body 471 and protrudes outward. The arc-shaped outer wall of the protrusion 473 is tangentially distributed with the upper surface of the second screen 45. In the process of the sample sliding on the second screen 45, it can also be squeezed by the convex roller 47, thereby better screening out the moisture in the sample. The convex roller 47 is arranged above the middle section of the second sieve 45, and the length distance from the center of the connecting shaft 472 to the outer wall of the protrusion 473 is smaller than the distance between the middle section of the second sieve 45 and the top inner wall of the screening chamber 41, so that the convex roller 47 can avoid collision interference when rotating, and the sediment sample on the second sieve 45 can reduce the accumulation caused by being blocked by the convex roller 47 during the process of sliding to the right.

[0024] In this embodiment, the screening mechanism 40 further includes a vibration motor, which is mounted and fixed on the outer wall of the screening chamber 41. When the vibration motor is activated, the second screen 45 can reduce the blockage of the sieve holes on its surface by the sediment sample under vibration, and make it easier for the sediment sample to slide and roll down along its upper surface. The size of the sieve holes on the surface of the second screen 45 is smaller than the size of the sieve holes on the surface of the first screen 14, and it is used to screen out water in the sediment sample.

[0025] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sediment sampling device for water conservancy projects, comprising an extraction mechanism (10), characterized in that: It also comprises a screw conveyor (20) and a screening mechanism (40), wherein the extraction mechanism (10) and the screw conveyor (20) are both installed above the screening mechanism (40), the output end of the extraction mechanism (10) is connected to the input end of the screw conveyor (20), and the output end of the screw conveyor (20) is connected to the input end of the screening mechanism (40). The screening mechanism (40) comprises a screening chamber (41), an inlet (42), a movable cover (43), two sets of supporting inclined rails (44), a second screen (45) and a motor (46); the inlet (42) is formed at the top of the screening chamber (41) and is connected to the screw conveyor (20), so that the inner cavity of the screening mechanism (40) is in communication with the inner cavity of the screw conveyor (20); an opening in communication with the inner cavity of the screening chamber (41) is formed at the right end; the movable cover (43) is detachably covered on the screening chamber (41) ) opening, two groups of the supporting inclined rails (44) are respectively formed on the inner walls of the screening chamber (41) on both sides opposite to each other, the second screen (45) is inserted between the two groups of the supporting inclined rails (44), and the right end of the second screen (45) is tilted downward under the limit support of the two groups of the supporting inclined rails (44), the motor (46) is installed and fixed on the outer wall of the screening chamber (41), and the output end of the motor (46) is connected to the convex roller (47), so that the convex roller (47) is driven to rotate and is arranged above the second screen (45).

2. A sediment sampling device for water conservancy projects according to claim 1, characterized in that: The convex roller (47) comprises a roller body (471), a connecting shaft (472) and a protruding portion (473); the connecting shaft (472) is formed in the middle of the roller body (471) and is fixedly connected to the motor (46); the protruding portion (473) is formed on the outer wall of the roller body (471) and protrudes outward; the arc-shaped outer wall of the protruding portion (473) is tangentially distributed with the upper surface of the second screen (45).

3. A sediment sampling device for water conservancy projects according to claim 2, characterized in that: The convex roller (47) is arranged above the middle section of the second screen (45), and the length distance from the center of the connecting shaft (472) to the outer wall of the protruding portion (473) is smaller than the distance between the middle section of the second screen (45) and the top inner wall of the screening chamber (41).

4. A sediment sampling device for water conservancy projects according to any one of claims 1 to 3, characterized in that: The screening mechanism (40) further comprises a vibration motor, which is mounted and fixed on the outer wall of the screening chamber (41).

5. A sediment sampling device for water conservancy projects according to claim 4, characterized in that: The extraction mechanism (10) comprises a buffer chamber (11), a protective cover (12), a mud pump (13), a first screen (14) and a conical platform (15), wherein the protective cover (12) is formed on the outer wall of the buffer chamber (11), the mud pump (13) is installed in the inner cavity of the protective cover (12), and the output end of the mud pump (13) extends into the inner cavity of the buffer chamber (11), and the first screen (14) is embedded and fixed on the bottom inner wall of the buffer chamber (11), the conical platform (15) is formed at the lower end of the buffer chamber (11) and is connected to the screw conveyor (20), and the conical platform (15) is located directly below the first screen (14).

6. A sediment sampling device for water conservancy projects according to claim 5, characterized in that: The size of the sieve holes on the surface of the first sieve (14) is greater than the size of the sieve holes on the surface of the second sieve (45).

7. A sediment sampling device for water conservancy projects according to claim 5, characterized in that: It also includes an extension pipe (50), the input end of the mud pump (13) passes through the protective cover (12) downward, and the input end of the mud pump (13) is connected to the extension pipe (50).

8. A sediment sampling device for water conservancy projects according to claim 1, characterized in that: It also comprises a bracket (30), the lower end of the bracket (30) being fixedly connected to the screening mechanism (40), and the upper end of the bracket (30) being fixedly connected to the outer wall of the screw conveyor (20).

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