A telescopic hopper for shakeout

Abstract

The utility model relates to a kind of telescopic hoppers for shakeout, including hopper main body and telescopic hopper neck, the telescopic hopper neck includes upper hopper neck, lower hopper neck and locking device, the flow regulating device is arranged between hopper main body and upper hopper neck top, and upper hopper neck lower end is placed in lower hopper neck inner cavity, and can move along lower hopper neck inner cavity, the locking device is set between upper hopper neck and lower hopper neck, and upper hopper neck and lower hole neck length adjustment are locked and fixed by locking device. The telescopic hopper can adjust shakeout height, accurately control flow and the device of falling process, to ensure the uniformity of soil sample, the controllability of density and the stability of sample height.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical testing tools, and in particular to a telescopic funnel for sand removal. Background Technology

[0002] In geotechnical testing, especially triaxial testing, the quality of soil sample preparation directly affects the accuracy and reliability of the test results. Traditional sand drop sampling methods typically rely on a funnel of fixed height to allow sand to fall freely and accumulate in a container. However, this method has significant drawbacks. Because the drop height of the sand is not adjustable, the impact force of the falling sand is often large, reducing the porosity between sand particles and resulting in a higher density soil sample, affecting the homogeneity of the sample and the accuracy of the test results. Furthermore, a funnel of fixed height makes it difficult to precisely control the flow rate and distribution of sand, making it difficult to achieve the expected sample height, thus affecting the reproducibility of the test.

[0003] Therefore, there is an urgent need in the existing technology for a device that can adjust the drop height, precisely control the flow rate and the drop process, in order to ensure the uniformity of soil samples, the controllability of density and the stability of sample height, thereby improving the accuracy and consistency of geotechnical tests such as triaxial tests. Utility Model Content

[0004] In view of the shortcomings of the background technology, the technical problem to be solved by this utility model is to provide a telescopic funnel for sand removal, which controls the sand removal height and flow rate by adjusting the length of the funnel neck, thereby improving the sample preparation effect.

[0005] This utility model is achieved by the following technical solution: a telescopic funnel for sand removal, comprising a funnel body and a telescopic funnel neck, wherein the telescopic funnel neck includes an upper funnel neck, a lower funnel neck and a locking device, a flow regulating device is provided between the funnel body and the top of the upper funnel neck, the lower end of the upper funnel neck is placed in the inner cavity of the lower funnel neck and can move along the inner cavity of the lower funnel neck, the locking device is provided between the upper funnel neck and the lower funnel neck, and the upper funnel neck and the lower funnel neck are locked and fixed by the locking device after the lengths of the upper funnel neck and the lower funnel neck are adjusted.

[0006] Furthermore, the locking device includes a locking ring and a threaded sleeve. The locking ring is sleeved on the outer wall of the upper funnel neck, and the upper funnel neck can move along the locking ring to adjust the exposed length of the upper funnel neck. The threaded sleeve is located at the top of the lower funnel neck and is threadedly engaged with the locking ring. When adjusting the length of the telescopic funnel neck, the threaded sleeve is rotated in the opposite direction to move the upper funnel neck to a certain position. Then, the threaded sleeve is rotated in the forward direction to tighten the threaded connection with the locking ring, thus achieving a fixed connection between the upper and lower funnel necks.

[0007] Furthermore, the locking ring includes an annular base and multiple locking elements. The multiple locking elements are arranged on the annular base and around the central axis of the base. Each locking element has an external thread that is adapted to the threaded sleeve. There is a gap between adjacent locking elements, which provides deformation space for the locking elements. Rotating the threaded sleeve in the forward direction makes the threaded sleeve and the locking elements threadedly fastened. The locking elements are tightly fastened to the outer wall of the upper funnel neck, realizing a fixed connection between the upper funnel neck and the lower funnel neck. When the threaded sleeve rotates in the reverse direction, the connection between the locking elements and the upper funnel neck is loosened. The upper funnel neck moves along the locking ring to adjust the exposed length of the upper funnel neck, thereby adjusting the overall length of the telescopic funnel neck.

[0008] Furthermore, a flow regulating device is provided between the funnel body and the upper funnel neck. The flow regulating device includes an upper sleeve, a hollow threaded seat, and a flow rate control hopper. The flow rate control hopper is fixed below the hollow threaded seat, and the upper sleeve is located above the hollow threaded seat. The funnel body is nested on the upper sleeve. The hollow threaded seat is threadedly connected to the inner cavity at the top of the upper funnel neck. The inner wall of the upper funnel neck has a limiting protrusion arranged around the inner wall. The limiting protrusion is inclined. The flow rate control hopper is funnel-shaped, and the outer wall of the flow rate control hopper abuts against the limiting protrusion. Rotating the hollow threaded seat controls the opening size of the flow rate control hopper.

[0009] Furthermore, the flow control hopper consists of at least two flow control plates, which are arranged at an angle and form a funnel shape around the central axis of the hollow threaded seat. There is a gap between adjacent flow control plates. The hollow threaded seat moves up and down along the inner cavity of the upper funnel neck to adjust the size of the gap between adjacent flow control plates, thereby controlling the size of the flow control hopper opening and controlling the flow rate of the falling sand.

[0010] Furthermore, an adjusting sleeve is provided on the outside of the hollow threaded seat, the top of the adjusting sleeve is fixedly connected to the top of the hollow threaded seat, and the gap between the adjusting sleeve and the hollow threaded seat allows the upper funnel neck to pass through.

[0011] Furthermore, the outer diameter of the upper funnel neck is smaller than the inner diameter of the lower funnel neck, which facilitates the movement of the upper funnel neck along the inner cavity of the lower funnel neck.

[0012] Furthermore, the threaded sleeve is made of plastic, and the outer surface of the threaded sleeve is provided with anti-slip texture.

[0013] Furthermore, the extension range of the upper funnel neck and the lower funnel neck is 1-300 mm.

[0014] Furthermore, the funnel body, upper funnel neck, and lower funnel neck are all made of wear-resistant material.

[0015] In this invention, the adjustable funnel neck design allows for adjustable neck length, enabling regulation of the sand drop height. Simultaneously, a flow rate regulating device adjusts the sand drop speed, ensuring controllable impact force during the drop process and reducing deviations in soil sample density. This design improves soil sample uniformity and test result accuracy, making it suitable for geotechnical tests such as triaxial tests. It boasts advantages such as simple structure, convenient operation, and high precision. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a telescopic funnel for sand removal according to the present invention;

[0017] Figure 2 for Figure 1 Schematic diagram of the structure of the telescopic funnel neck;

[0018] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the central locking ring;

[0019] Figure 4 for Figure 1 A schematic diagram of the cross-sectional structure of a threaded sleeve;

[0020] Figure 5 for Figure 1 Schematic diagram of the medium flow rate regulating device;

[0021] Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure of a medium-flow regulating device;

[0022] Figure 7 A partial cross-sectional schematic diagram of the flow regulating device with the control hopper at its maximum opening.

[0023] Figure 8 This is a schematic diagram of a partial cross-sectional structure where the opening of the flow control hopper in the flow regulating device becomes smaller. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] Reference Figure 1-8The first embodiment of this utility model provides a telescopic funnel for sand removal, including a funnel body 1 and a telescopic funnel neck. The telescopic funnel neck includes an upper funnel neck 2, a lower funnel neck 3, and a locking device 4. The outer diameter of the upper funnel neck is smaller than the inner diameter of the lower funnel neck. The lower end of the upper funnel neck 2 is placed inside the cavity of the lower funnel neck 3 and can move along the cavity of the lower funnel neck. The locking device 4 is located at the adjustment point between the upper funnel neck 2 and the lower funnel neck 3. After the lengths of the upper funnel neck 2 and the lower funnel neck 3 are adjusted, they are locked and fixed by the locking device 4, thus completing the adjustment of the length of the telescopic funnel. The telescopic range of the upper funnel neck 2 and the lower funnel neck 3 is preferably between 0-300 mm to meet the requirements of different sample heights and achieve precise height adjustment. A flow regulating device 5 is provided between the top of the funnel body 1 and the upper funnel neck 2 to control the flow rate of the falling sand. The funnel body 1, upper funnel neck 2, and lower funnel neck 3 are all made of wear-resistant materials to enhance the service life of the device and make it suitable for geotechnical testing environments that require long-term and repeated use.

[0026] The locking device 4 includes a locking ring 41 and a threaded sleeve 42. The locking ring 41 is sleeved on the outer wall of the upper funnel neck 2, and the upper funnel neck 2 can move along the locking ring 41 to adjust the exposed length of the upper funnel neck 2. The threaded sleeve 42 is located at the top of the lower funnel neck 3, and the threaded sleeve 42 is threadedly engaged with the locking ring 41. The threaded sleeve 42 is made of plastic, and its outer surface is textured with anti-slip material. When it is necessary to adjust the length of the telescopic funnel neck, the threaded sleeve 42 is rotated in the opposite direction, the locking ring and the upper funnel neck are loosened, the upper funnel neck is moved to the required length, and then the threaded sleeve is rotated in the forward direction to tighten the threaded connection with the locking ring, thus fixing the upper funnel neck and the lower funnel neck together, and completing the adjustment of the telescopic funnel neck length.

[0027] The locking ring 41 includes an annular base 411 and multiple locking elements 412, which are arranged on the annular base 411 and around the central axis of the base. Each locking element has an external thread 413 that matches a threaded sleeve, and a gap 414 exists between adjacent locking elements to provide deformation space. Rotating the threaded sleeve 42 causes it to be threadedly fastened to the locking ring 41, and the locking elements are tightly fastened to the outer wall of the upper funnel neck, achieving a fixed connection between the upper and lower funnel necks. When the threaded sleeve 42 rotates in the opposite direction, the connection between the locking elements 412 and the upper funnel neck 2 loosens, allowing the upper funnel neck to move along the locking ring to adjust its exposed length. Tightening the threaded sleeve again achieves overall length adjustment of the telescopic funnel neck.

[0028] Reference Figure 5-8The flow regulating device 5 is disposed between the funnel body 1 and the upper funnel neck 2. The flow regulating device 5 includes an upper sleeve 51, a hollow threaded seat 52, and a flow rate control hopper 53. The flow rate control hopper 53 is disposed below the hollow threaded seat 52, and the upper sleeve 51 is fixed above the hollow threaded seat 52. The funnel body 1 is nested on the upper sleeve 51. The hollow threaded seat 52 is threadedly connected to the inner cavity of the top end of the upper funnel neck 2. The inner wall of the upper funnel neck has a limiting flange 21 arranged around the inner wall, and the limiting flange 21 has an inclined cross-section. The flow rate control hopper 53 is funnel-shaped, and the outer wall of the flow rate control hopper abuts against the limiting flange 21. Rotating the hollow threaded seat 52 causes the hollow threaded seat to move up and down along the inner cavity of the upper funnel neck 2, causing the flow rate control hopper 53 to move along the limiting flange 21, thereby controlling the opening size of the flow rate control hopper.

[0029] Specifically, the flow control hopper 53 consists of at least two flow control plates 531. These plates 531 are arc-shaped and obliquely arranged, forming a funnel shape around the central axis of the hollow threaded seat. A gap 532 exists between adjacent flow control plates 531, providing space for plate deformation. The hollow threaded seat 52 moves up and down along the inner cavity of the upper funnel neck 2, adjusting the size of the gap 532 between adjacent flow control plates, thereby controlling the size of the opening of the flow control hopper 53 and the flow rate of the falling sand. For example, when the hollow threaded seat 52 moves downward along the inner cavity of the upper funnel neck 2, the obliquely arranged flow control plates 531, under the pressure of the limiting flange 21, reduce the gap 532 between adjacent flow control plates, decreasing the lower opening of the flow control hopper and reducing the flow rate of the falling sand. When the hollow threaded seat 52 moves upward along the inner cavity of the upper funnel neck 2, the gap 532 between adjacent flow control plates increases, increasing the flow rate of the falling sand. An adjusting sleeve 54 is provided on the outside of the hollow threaded seat. The top of the adjusting sleeve 54 is fixedly connected to the top of the hollow threaded seat 52. The gap between the adjusting sleeve 54 and the hollow threaded seat 52 allows the upper funnel neck 2 to pass through. The outer surface of the adjusting sleeve 54 is provided with anti-slip texture. Rotating the adjusting sleeve 54 drives the rotation of the hollow threaded seat, and at the same time, the adjusting sleeve acts as a shield for the hollow threaded seat.

[0030] The extendable and adjustable funnel neck design can meet the requirements of samples of various heights, improving the convenience and accuracy of the adjustment process, and is suitable for geotechnical tests that require frequent adjustments to the sand drop height. Simultaneously, the flow rate adjustment device 5 regulates the sand drop velocity, making the impact force during the sand drop process controllable, reducing soil sample density deviation, improving soil sample uniformity and the accuracy of test results. It is suitable for geotechnical tests such as triaxial tests, and has the advantages of simple structure, convenient operation, and high accuracy.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A telescopic funnel for sand removal, characterized in that: The funnel includes a funnel body and a telescopic funnel neck. The telescopic funnel neck includes an upper funnel neck, a lower funnel neck, and a locking device. A flow regulating device is provided between the funnel body and the top of the upper funnel neck. The lower end of the upper funnel neck is placed in the inner cavity of the lower funnel neck and can move along the inner cavity of the lower funnel neck. The locking device is provided between the upper funnel neck and the lower funnel neck. After the lengths of the upper funnel neck and the lower funnel neck are adjusted, they are locked and fixed by the locking device.

2. A telescopic funnel for sand removal according to claim 1, characterized in that: The locking device includes a locking ring and a threaded sleeve. The locking ring is sleeved on the outer wall of the upper funnel neck, and the upper funnel neck can move along the locking ring to adjust the exposed length of the upper funnel neck. The threaded sleeve is located at the top of the lower funnel neck and is threadedly engaged with the locking ring. When adjusting the length of the telescopic funnel neck, the threaded sleeve is rotated in the opposite direction to move the upper funnel neck to a certain position. Then, the threaded sleeve is rotated in the forward direction to tighten the threaded lock ring, thus achieving a fixed connection between the upper and lower funnel necks.

3. A telescopic funnel for sand removal according to claim 2, characterized in that: The locking ring includes an annular base and multiple locking elements. The locking elements are arranged on the annular base and around the central axis of the base. Each locking element has an external thread that matches the threaded sleeve. There is a gap between adjacent locking elements, which provides deformation space for the locking elements. Rotating the threaded sleeve in the forward direction makes the threaded sleeve and the locking element threadedly fastened. The locking element is tightly fastened to the outer wall of the upper funnel neck, realizing a fixed connection between the upper funnel neck and the lower funnel neck. When the threaded sleeve rotates in the reverse direction, the connection between the locking element and the upper funnel neck is loosened. The upper funnel neck moves along the locking ring to adjust the exposed length of the upper funnel neck, thereby adjusting the overall length of the telescopic funnel neck.

4. A telescopic funnel for sand removal according to claim 1, 2, or 3, characterized in that: A flow regulating device is provided between the funnel body and the upper funnel neck. The flow regulating device includes an upper sleeve, a hollow threaded seat, and a flow control hopper with adjustable flow rate. The flow control hopper is fixed below the hollow threaded seat, and the upper sleeve is located above the hollow threaded seat. The funnel body is nested on the upper sleeve. The hollow threaded seat is threadedly connected to the inner cavity at the top of the upper funnel neck. The inner wall of the upper funnel neck has a limiting protrusion arranged around the inner wall. The limiting protrusion is inclined. The flow control hopper is funnel-shaped, and the outer wall of the flow control hopper abuts against the limiting protrusion. Rotating the hollow threaded seat controls the opening size of the flow control hopper.

5. A telescopic funnel for sand removal according to claim 4, characterized in that: The flow control hopper consists of at least two flow control plates. The flow control plates are arranged at an angle and are arranged around the central axis of the hollow threaded seat to form a funnel shape. There is a gap between adjacent flow control plates. The hollow threaded seat moves up and down along the inner cavity of the upper funnel neck to adjust the size of the gap between adjacent flow control plates, thereby controlling the size of the flow control hopper opening and controlling the flow rate of the falling sand.

6. A telescopic funnel for sand removal according to claim 5, characterized in that: An adjusting sleeve is provided on the outside of the hollow threaded seat. The top of the adjusting sleeve is fixedly connected to the top of the hollow threaded seat, and the gap between the adjusting sleeve and the hollow threaded seat allows the upper funnel neck to pass through.

7. A telescopic funnel for sand removal according to claim 2 or 3, characterized in that: The outer diameter of the upper funnel neck is smaller than the inner diameter of the lower funnel neck, which facilitates the movement of the upper funnel neck along the inner cavity of the lower funnel neck.

8. A telescopic funnel for sand removal according to claim 7, characterized in that: The threaded sleeve is made of plastic, and the outer surface of the threaded sleeve is provided with anti-slip texture.

9. A telescopic funnel for sand removal according to claim 8, characterized in that: The extension range of the upper and lower funnel necks is 1-300 mm.

10. A telescopic funnel for sand removal according to claim 8 or 9, characterized in that: The funnel body, upper funnel neck, and lower funnel neck are all made of wear-resistant material.

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