A special-shaped geotechnical long-neck funnel with controllable flow rate

Abstract

The present invention belongs to the field of geotechnical testing, and relates to a special-shaped geotechnical long-necked funnel with controllable flow rate, comprising a shell, a long neck connected to the shell, and a flow rate regulating device arranged at the connection between the shell and the long neck; a funnel opening for filling sand is reserved on the side of the shell away from the long neck; and the connection surface between the shell and the long neck is a first plane. The present invention realizes rapid and continuous control of the sand filling speed by arranging a sand sealing opening, a linear sand outlet, and a maximum sand outlet on the flow rate regulating pin; by changing the shape of the shell, the long-necked funnel reduces the obstruction of the sample preparation operation during the sand filling method, thereby improving the operability of the experiment; and the shape of the shell conforms to the principle of ergonomics, fits the base of the human palm, and is easy to hold.

Description

Technical Field

[0001] The invention belongs to the field of geotechnical tests and relates to a special-shaped geotechnical long-necked funnel with controllable flow rate. Background Art

[0002] In indoor geotechnical tests, the sand rain method is often used to prepare reshaped sand samples, that is, relying on gravity to gradually pour sand from the top of the mold into the mold. This method is economical and practical, easy to operate, and can be used with the vibration method and compaction method to prepare a variety of density samples. It has a wide range of uses in geotechnical tests.

[0003] However, when this method is used to prepare samples, in order to control the sand throwing speed, sand can only be put into the funnel mouth in small amounts at a time. After the current filling is completed, it is vibrated or compacted before the next filling can be carried out.

[0004] The speed at which sand is thrown from the long-necked funnel is heavily dependent on the structure and size of the funnel; the selection of the timing for vibration and compaction depends on the operation and experience of the test operator. It is difficult to evenly and accurately control the density and uniformity of the sample, which affects the test accuracy.

[0005] The traditional long-necked funnel is simple in structure and economical, but it is inconvenient to operate in geotechnical tests. On the one hand, the size of the funnel nozzle determines the speed of sand rain injection, which in turn affects the longitudinal uniformity of the sample to a certain extent, restricting the credibility of the test results. On the other hand, when preparing the sample, it is necessary to observe the sand injection speed of the funnel sand outlet and the flatness and uniformity of the sample plane. However, the funnel has an axisymmetric structure, which is very inconvenient to observe, especially for hollow cylindrical samples with a small injection section. This problem is particularly serious.

[0006] The existing automatic sand sprinkler using the sand rain method controls the injection speed of the sample through a disc with holes, but the disc needs to be set in advance, and the structure of the device is too complicated. The injection device must be equipped with discs of various sizes, which is difficult to operate. Summary of the invention

[0007] In view of this, the object of the present invention is to provide a special-shaped geotechnical long-necked funnel with controllable flow rate, which can linearly adjust the amount of sand leakage per unit time and realize rapid and continuous control of the sand filling speed.

[0008] In order to achieve the above object, the present invention provides the following technical solutions:

[0009] A flow rate controllable special-shaped geotechnical long-neck funnel comprises a shell, a long neck connected to the shell, and a flow rate regulating device arranged at the connection between the shell and the long neck; a funnel opening for pouring sand is reserved on a side of the shell away from the long neck; the connection surface between the shell and the long neck is a first plane.

[0010] Optionally, the flow rate regulating device is a flow rate regulating pin with a sand outlet thereon, and the flow rate regulating pin is movably arranged along the first plane, and the sand leakage flow of the funnel is adjusted by adjusting the size of the overlapping part between the sand outlet and the projection of the long neck in the first plane.

[0011] Optionally, one side of the sand outlet is conical, the tip of the cone is in a first direction, and the flow rate adjustment pin is movably arranged along the first direction; the conical side of the sand outlet is a linear sand outlet.

[0012] Optionally, the other side of the sand outlet is rectangular, and the rectangular side of the sand outlet is the largest sand outlet; the portion of the flow rate regulating pin that is not provided with a sand outlet and faces the linear sand outlet is the sand sealing outlet.

[0013] Optionally, a limiter is provided on one end or both ends of the flow rate regulating pin.

[0014] Optionally, a projection area of ​​the shell on the first plane gradually decreases along a direction approaching the long neck.

[0015] Optionally, the shell is in the shape of a 1 / 4 true sphere or a 1 / 4 ellipsoid.

[0016] Optionally, the shell includes a spherical shell and a flat shell, and the spherical shell and the flat shell are connected in a smooth and rounded manner.

[0017] Optionally, a fixing device for fixing a flow rate regulating device is fixedly provided at the connection with the long neck, and a yield opening matching the flow rate regulating device is opened on the side of the fixing device facing the flow rate regulating device.

[0018] Optionally, one end of the long neck away from the shell is a funnel nozzle with a slope.

[0019] The beneficial effects of the present invention are:

[0020] The invention realizes rapid and continuous control of the sand filling speed by arranging a sand sealing port, a linear sand outlet port and a maximum sand outlet port on the flow rate regulating pin; by changing the shape of the shell, the obstruction of the sample preparation operation by the long-necked funnel during the sample preparation by the sand filling method is reduced, thereby improving the operability of the experiment; and the shape of the shell conforms to the principle of ergonomics, fits the base of the human palm, and is easy to hold.

[0021] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 A top view of the present invention;

[0025] Figure 3 A top view of the flow rate adjustment pin;

[0026] Figure 4 It is the front view of the flow rate adjustment pin;

[0027] Figure 5 A side view of the flow rate adjustment latch;

[0028] Figure 6 This is the observation perspective of the traditional funnel;

[0029] Figure 7 This is the viewing angle of the present invention. DETAILED DESCRIPTION

[0030] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0031] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] See also Figure 1-Figure 7 The component numbers in the accompanying drawings respectively represent: shell 1, funnel mouth 10, spherical shell 11, flat shell 12, flow rate adjustment pin 2, maximum sand outlet 21, linear sand outlet 22, sealing sand outlet 23, sand outlet 20, limiter 24, fixing device 3, long neck 4, make way mouth 41, funnel nozzle 5, mold 6, eyes 7, long neck funnel 8, sight line 9.

[0034] The present invention relates to a flow rate controllable special-shaped geotechnical long neck 4 funnel, comprising a shell 1, a long neck 4 connected to the shell 1, and a flow rate regulating device arranged at the connection between the shell 1 and the long neck 4; a funnel mouth 10 for pouring sand is reserved on the side of the shell 1 away from the long neck 4; the connection surface between the shell 1 and the long neck 4 is a first plane.

[0035] As an embodiment, the flow rate regulating device is a flow rate regulating plug 2 with a sand outlet 20, the flow rate regulating plug 2 is movably arranged along the first plane, and the sand leakage flow of the funnel is adjusted by adjusting the size of the overlapping part of the projection of the sand outlet 20 and the long neck 4 in the first plane; to achieve linear adjustment of the sand leakage speed, one side of the sand outlet 20 is conical, and the tip direction of the cone is the first direction, and the flow rate regulating plug 2 is movably arranged along the first direction; the conical side of the sand outlet 20 is a linear sand outlet 22; to facilitate sand sealing and rapid sand leakage, the other side of the sand outlet 20 is rectangular, and the rectangular side of the sand outlet 20 is the maximum sand outlet 21; the part of the flow rate regulating plug 2 that is not provided with the sand outlet 20 and faces the linear sand outlet 22 is the sand sealing port 23. To prevent the flow rate regulating plug 2 from falling off, a stopper 24 is provided on one or both ends of the flow rate regulating plug 2.

[0036] As an embodiment, the projection area of ​​the shell 1 of the present invention on the first plane gradually becomes smaller along the direction approaching the long neck 4; the shell 1 is in the shape of a 1 / 4 true sphere or a 1 / 4 ellipsoid; the shell 1 includes a spherical shell 11 and a flat shell 12, and the spherical shell 11 and the flat shell 12 are smoothly rounded and connected; the connection with the long neck 4 is also fixedly provided with a fixing device 3 for fixing a flow rate regulating device, and a clearance port 41 matching the flow rate regulating device is provided on the side of the fixing device 3 facing the flow rate regulating device, if the flow rate regulating device is a flow rate regulating pin 2, the clearance port 41 is a pin port whose shape matches the flow rate regulating pin 2, and the flow rate regulating pin 2 can be inserted and withdrawn by manual operation; the end of the long neck 4 away from the shell 1 is a funnel nozzle 5 with a slope.

[0037] When preparing samples by the sand rain method, the uniformity of the sample plane must be observed frequently to ensure the quality of the sample. When using a traditional long-necked 4-funnel to pour sand into a mold 6 to prepare a sample, the observer's eyes 7 are located above the sample. Since the traditional long-necked 4-funnel is an axisymmetric structure, its upper shell 1 structure will block part of the line of sight 9, making it difficult to observe the inside of the sample.

[0038] When the sample is prepared by the present invention, if a transparent material is used, the observer can observe the internal situation of the mold 6 through one side of the flat shell 12 of the long-necked 4 funnel. If an opaque material is used, the observer can observe the internal situation of the mold 6 along the extension direction of the flat shell 12. Since the obstruction is reduced, the observation angle during the sample preparation process is expanded, which brings convenience to the sample operation.

[0039] When preparing samples for geotechnical tests, hold the present invention with one hand, with the base of the thumb fitting the spherical shell 11 of the shell 1 for easy holding. Use the other hand to fully insert the flow rate adjustment pin 2 into the fixing device 3. At this time, the inner cavity channel of the long neck 4 is blocked by the sand sealing port 23, and the sand cannot fall. Pull the limiter 24 by hand to slowly withdraw the flow rate adjustment pin 2. The inner cavity channel of the long neck 4 gradually overlaps with the linear sand outlet 22, and the sand can slowly fall. As the limiter 24 is pulled out, the area of ​​the linear sand outlet 22 in the inner cavity channel of the long neck 4 gradually increases, and the sand outlet speed increases. When the flow rate adjustment pin 2 is pulled to the maximum position, the inner cavity channel of the long neck 4 overlaps with the maximum sand outlet 21, and the sand falls at the fastest speed.

[0040] The present invention realizes rapid and continuous control of the sand filling speed by arranging a sand sealing port 23, a linear sand outlet port 22, and a maximum sand outlet port 21 on the flow rate regulating pin 2; by changing the shape of the shell 1, the obstruction of the sample preparation operation by the long neck 4 funnel during the sample preparation by the sand filling method is reduced, thereby improving the operability of the experiment; and the shape of the shell 1 conforms to the principle of ergonomics, fits the base of the human palm, and is easy to hold.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. 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 solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A flow rate controllable special-shaped geotechnical long-necked funnel, characterized in that: The invention comprises a shell, a long neck connected with the shell, and a flow rate regulating device arranged at the connection point between the shell and the long neck; a funnel opening for pouring sand is reserved on one side of the shell away from the long neck; the connecting surface of the shell and the long neck is a first plane; the flow rate regulating device is a flow rate regulating plug, which is provided with a sand outlet, and the flow rate regulating plug is movably arranged along the first plane, and the sand leakage flow of the funnel is adjusted by adjusting the size of the overlapping part of the sand outlet and the projection of the long neck in the first plane; one side of the sand outlet is conical, and the direction of the tip of the cone is the first direction, and the flow rate regulating plug is movably arranged along the first direction; the conical side of the sand outlet is a linear sand outlet; the other side of the sand outlet is rectangular, and the rectangular side of the sand outlet is the maximum sand outlet; the part of the flow rate regulating plug without a sand outlet and facing the linear sand outlet is a sand sealing port; a limiter is provided at one end or both ends of the flow rate regulating plug.

2. The flow rate controllable special-shaped geotechnical long-necked funnel as claimed in claim 1, characterized in that: The projection area of ​​the shell on the first plane gradually decreases along the direction approaching the long neck.

3. The flow rate controllable special-shaped geotechnical long-necked funnel as claimed in claim 2, characterized in that: The shell is in the shape of a quarter sphere or a quarter ellipsoid.

4. The flow rate controllable special-shaped geotechnical long-necked funnel as claimed in claim 3, characterized in that: The shell comprises a spherical shell and a flat shell, and the spherical shell and the flat shell are connected in a smooth and rounded manner.

5. The flow rate controllable special-shaped geotechnical long-necked funnel as claimed in claim 1, characterized in that: A fixing device for fixing the flow rate regulating device is also fixedly arranged at the connection with the long neck, and a yielding opening matching the flow rate regulating device is opened on the side of the fixing device facing the flow rate regulating device.

6. The flow rate controllable special-shaped geotechnical long-necked funnel as claimed in claim 1, characterized in that: One end of the long neck away from the shell is a funnel nozzle with an inclined surface.

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