Sand sample screening machine

Abstract

The utility model discloses a sand sample screening machine which comprises a bottom frame, screening assemblies are arranged on the top of the bottom frame, auxiliary assemblies are arranged between the screening assemblies, outer side plates are fixedly installed on the outer side of the bottom frame, supporting columns are fixedly installed between the upper outer side plate and the lower outer side plate, and each screening assembly comprises a screen and a bottom plate. The outer sides of the limiting rods are connected with racks in a sliding mode, and connecting blocks are fixedly installed between the racks and the corresponding outer buckets. According to the sand sample screening machine, front-back movement of a rack can be achieved through cooperation of reciprocating rotation of a gear and a limiting rod, front-back reciprocating movement of a screen is achieved through front-back movement of the rack, and sand above the screen can be screened through front-back reciprocating movement of the screen; and the sandy soil can be subjected to multi-stage classified screening through a plurality of screen meshes of which the apertures are sequentially reduced up and down, so that the purposes of convenience and higher efficiency of classified screening are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of geotechnical testing, in particular to a sand sample screening machine. Background Art

[0002] In geotechnical testing, disturbed sand samples need to be screened and named according to the size of the particle grading. Manually grading the sand samples with standard sieves is time-consuming and labor-intensive, inefficient, and will also result in a certain loss rate.

[0003] To this end, the utility model provides a sand sample screening machine, which improves the existing standard sieve, simulates manual shaking and vibration to achieve automatic screening function, allowing the sample to pass through a series of sieve holes that are smaller than the previous level, and more effectively separates particles of different sizes to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a sand sample screening machine to solve the above problems.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a sand sample screening machine, including a bottom frame, a screening assembly is provided on the top of the bottom frame, an auxiliary assembly is provided between the screening assemblies, an outer plate is fixedly installed on the outer side of the bottom frame, a support column is fixedly installed between the upper and lower outer plates, the screening assembly includes a screen and a bottom plate, an external bucket is fixedly installed on the top of the screen, a first side plate is fixedly installed on the top of the bottom plate, a limiting rod of the bottom frame is fixedly installed between the two first side plates, a rack is slidably connected to the outer side of the limiting rod, and a connecting block is fixedly installed between the rack and the corresponding external bucket.

[0006] Preferably, a second side plate is fixedly mounted on the top of the bottom plate, and a gear is rotatably connected between the second side plates, and the gear is engaged with the bottom of the corresponding rack.

[0007] By adopting the above technical solution, the reciprocating rotation of the gear drives the rack to move back and forth.

[0008] Preferably, a stepper motor is fixedly mounted on the outer end of the second side plate, an output end of the stepper motor movably passes through the interior of the second side plate and is fixedly connected to a gear, and the left and right corresponding stepper motors rotate synchronously.

[0009] By adopting the above technical solution, the reciprocating rotation of the gear is achieved through a stepping motor.

[0010] Preferably, a piezoelectric sensor is fixedly installed between the bottom of the bottom plate and the top of the bottom frame, and the aperture of the screen decreases from top to bottom.

[0011] By adopting the above technical solution, the sand on the screen is weighed by a piezoelectric sensor.

[0012] Preferably, the auxiliary component includes a front panel, which is hinged on the front of the external bucket and the screen, and side panels are fixedly installed on both sides of the front panel, and the side panels are attached to the outside of the two sides of the external bucket.

[0013] By adopting the above technical solution, the sand and soil can be discharged and guided by opening the front panel.

[0014] Preferably: a card plate is fixedly installed on the top of the side panel, a card slot is opened inside the card plate, a screw is fixedly installed on the side of the external bucket, the card plate is clamped to the outside of the screw through the card slot, a nut is screwed to the outside of the screw, the nut is fitted to the outside of the card plate, and a card rod is fixedly installed on the bottom of the side panel.

[0015] By adopting the above technical solution, the side panels are fixed by the clamping rods and the clamping plates.

[0016] Beneficial effects

[0017] The utility model provides a sand sample screening machine. Compared with the existing technology, it has the following beneficial effects:

[0018] 1. The sand sample screening machine can realize the back-and-forth movement of the rack through the reciprocating rotation of the gear and the limit rod, and the back-and-forth movement of the rack can realize the back-and-forth movement of the screen. The back-and-forth movement of the screen can screen the sand above the screen, and the sand can be screened in multiple levels through the upper and lower screens with successively lower apertures, thereby achieving the purpose of convenient and efficient graded screening.

[0019] 2. The sand sample screening machine rotates the front panel around the front of the screen. After rotating to a certain angle, the clamping rod is blocked by the screw. At this time, the front panel is tilted downward. The sand on the screen can be guided through the front panel and the side panel, thereby achieving the purpose of convenient removal of the screened sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation scheme of the present invention or the technical scheme in the prior art, the drawings required for use in the implementation scheme or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation schemes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 This is a three-dimensional diagram of the external structure of the utility model;

[0022] Figure 2It is a partial structural stereogram of the utility model;

[0023] Figure 3 This is a three-dimensional diagram of the external structure of the auxiliary component of the utility model;

[0024] Figure 4 It is a three-dimensional diagram of the operating structure of the auxiliary component of the utility model.

[0025] In the figure: 1. Bottom frame; 2. Auxiliary components; 21. Front panel; 22. Side panel; 23. Clamping rod; 24. Clamping plate; 25. Screw; 26. Nut; 27. Slot; 3. Screening component; 31. External bucket; 32. Screen; 33. Rack; 34. Connecting block; 35. Limiting rod; 36. First side panel; 37. Bottom plate; 38. Second side panel; 39. Gear; 310. Stepper motor; 4. Outer panel; 5. Support column; 6. Piezoelectric sensor. DETAILED DESCRIPTION

[0026] It should be noted that in the description of the embodiments of the present application, the terms "front, rear", "left, right", "up, down", etc. indicating directions or positional relationships are all based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present application. The terms "install", "connect", and "connected" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrally connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] The present application will be further described in detail below through the accompanying drawings and examples.

[0028] Reference Figures 1 to 4 The embodiment of the present application provides a sand sample screening machine, including a bottom frame 1, a screening assembly 3 is provided on the top of the bottom frame 1, an auxiliary assembly 2 is provided between the screening assemblies 3, an outer plate 4 is fixedly installed on the outer side of the bottom frame 1, a support column 5 is fixedly installed between the upper and lower outer plates 4, the screening assembly 3 includes a screen 32 and a bottom plate 37, an external bucket 31 is fixedly installed on the top of the screen 32, a first side plate 36 is fixedly installed on the top of the bottom plate 37, a limiting rod 35 of the bottom frame 1 is fixedly installed between the two first side plates 36, a rack 33 is slidably connected to the outer side of the limiting rod 35, and a connecting block 34 is fixedly installed between the rack 33 and the corresponding external bucket 31.

[0029] A second side plate 38 is fixedly mounted on the top of the bottom plate 37. A gear 39 is rotatably connected between the second side plates 38, meshing with the bottom of the corresponding rack 33. A stepper motor 310 is fixedly mounted on the outer end of the second side plate 38. The output end of the stepper motor 310 moves through the interior of the second side plate 38 and is fixedly connected to the gear 39, allowing the corresponding stepper motors 310 to rotate synchronously. A piezoelectric sensor 6 is fixedly mounted between the bottom of the bottom plate 37 and the top of the bottom frame 1. The aperture of the screen 32 decreases from top to bottom.

[0030] In this embodiment, when screening sand, the sand is placed above the screen 32 and inside the external bucket 31. The stepper motor 310 is started to drive the gear 39 to rotate back and forth. The reciprocating rotation of the gear 39 and the limit rod 35 can realize the back and forth movement of the rack 33, and the back and forth movement of the rack 33 can realize the back and forth movement of the screen 32. The back and forth movement of the screen 32 can screen the sand above the screen 32, and the screen 32 with multiple apertures decreasing in sequence can perform multi-level classification screening of the sand, thereby achieving the purpose of convenient and efficient graded screening, and after screening, the piezoelectric sensor 6 below the screen 32 can detect the weight of the sand on the screen 32.

[0031] Reference Figures 1 to 4 In one aspect of this embodiment, the auxiliary assembly 2 includes a front panel 21, which is hingedly connected to the front of the external bucket 31 and the screen 32. Side panels 22 are fixedly mounted on both sides of the front panel 21, and the side panels 22 fit on the outside of the active sides of the external bucket 31. A clamping plate 24 is fixedly mounted on the top of the side panel 22, and a clamping slot 27 is defined within the clamping plate 24. A screw 25 is fixedly mounted on the side of the external bucket 31. The clamping plate 24 is clamped to the outside of the screw 25 through the clamping slot 27. A nut 26 is screwed to the outside of the screw 25, and the nut 26 fits on the outside of the clamping plate 24. A clamping rod 23 is fixedly mounted on the bottom of the side panel 22.

[0032] In this embodiment, after the sand and soil are screened, when the sand and soil are discharged, the nut 26 is unscrewed to release the fixation between the clamping plate 24 and the screw 25. After the fixation is released, the front panel 21 can be rotated around the front of the screen 32. After rotating to a certain angle, the clamping rod 23 is blocked by the screw 25. At this time, the front panel 21 is tilted downward, and the sand and soil on the screen 32 can be guided by the front panel 21 and the side panel 22, thereby achieving the purpose of conveniently removing the screened sand and soil.

[0033] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0034] Working principle: When screening sand, place the sand on the screen 32 and inside the external bucket 31. Start the stepper motor 310 to drive the gear 39 to rotate back and forth. The gear 39 rotates back and forth in conjunction with the limit rod 35 to realize the back and forth movement of the rack 33. The back and forth movement of the rack 33 realizes the back and forth movement of the screen 32. The back and forth movement of the screen 32 can screen the sand above the screen 32, and the screen 32 with multiple apertures decreasing in sequence can perform multi-level classification screening on the sand, thereby achieving the purpose of convenient and efficient graded screening. After screening, the weight of the sand on the screen 32 can be detected by the piezoelectric sensor 6 under the screen 32. After the sand screening is completed, when the sand is discharged, the nut 26 is unscrewed to release the fixation between the clamping plate 24 and the screw 25. After releasing the fixation, the front panel 21 can be rotated around the front of the screen 32. After rotating a certain angle, the clamping rod 23 is blocked by the screw 25. At this time, the front panel 21 is tilted downward, and the sand on the screen 32 can be guided by the front panel 21 and the side panel 22, thereby achieving the purpose of conveniently removing the screened sand.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A sand sample screening machine, comprising a bottom frame (1), characterized in that: A screening assembly (3) is provided on the top of the bottom frame (1), an auxiliary assembly (2) is provided between the screening assemblies (3), an outer plate (4) is fixedly installed on the outer side of the bottom frame (1), a support column (5) is fixedly installed between the upper and lower outer plates (4), the screening assembly (3) comprises a screen (32) and a bottom plate (37), an external bucket (31) is fixedly installed on the top of the screen (32), a first side plate (36) is fixedly installed on the top of the bottom plate (37), a limiting rod (35) of the bottom frame (1) is fixedly installed between the two first side plates (36), a rack (33) is slidably connected to the outer side of the limiting rod (35), and a connecting block (34) is fixedly installed between the rack (33) and the corresponding external bucket (31).

2. A sand sample screening machine according to claim 1, characterized in that: A second side plate (38) is fixedly mounted on the top of the bottom plate (37), and a gear (39) is rotatably connected between the second side plates (38), and the gear (39) is engaged with the bottom of the corresponding rack (33).

3. A sand sample screening machine according to claim 2, characterized in that: A stepper motor (310) is fixedly mounted on the outer end of the second side plate (38), and an output end of the stepper motor (310) is movable through the interior of the second side plate (38) and is fixedly connected to a gear (39), so that the corresponding stepper motors (310) on the left and right rotate synchronously.

4. A sand sample screening machine according to claim 1, characterized in that: A piezoelectric sensor (6) is fixedly installed between the bottom of the bottom plate (37) and the top of the bottom frame (1), and the aperture of the screen (32) decreases from top to bottom.

5. The sand sample screening machine according to claim 1, characterized in that: The auxiliary component (2) includes a front panel (21), which is hinged on the front of the external bucket (31) and the screen (32), and side panels (22) are fixedly installed on both sides of the front panel (21), and the side panels (22) are attached to the outer sides of the two sides of the external bucket (31).

6. The sand sample screening machine according to claim 5, characterized in that: A clamping plate (24) is fixedly installed on the top of the side panel (22), a clamping groove (27) is opened inside the clamping plate (24), a screw rod (25) is fixedly installed on the side of the external bucket (31), the clamping plate (24) is clamped on the outside of the screw rod (25) through the clamping groove (27), a nut (26) is screwed on the outside of the screw rod (25), and the nut (26) is attached to the outside of the clamping plate (24), and a clamping rod (23) is fixedly installed on the bottom of the side panel (22).

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