CN220111533U - Sand and stone screening device - Google Patents

Abstract

The utility model relates to the technical field of construction tools, in particular to a sand and stone screening device which comprises a frame and a screening cylinder fixedly arranged on the frame, wherein the screening cylinder comprises a cylinder body, a threaded feeding rod and a first motor, the cylinder body is provided with a cavity, the threaded feeding rod is arranged in the cavity and is in rotary connection with the cylinder body, the first motor is fixedly arranged on the frame and is in transmission connection with the threaded feeding rod, a feeding hole communicated with the cavity is formed in the upper side of one end of the cylinder body, a first screening hole, a second screening hole and a third screening hole communicated with the cavity are sequentially formed in the bottom side of the cylinder body along the transmission direction of the threaded feeding rod, the first screening hole is provided with a first screen, the second screening hole is provided with a second screen, and the screen aperture of the first screen is smaller than that of the second screening hole. The sand screening device can improve the sand screening efficiency and accelerate the construction progress.

Description

Sand and stone screening device

Technical Field

The utility model relates to the technical field of construction tools, in particular to a sand and stone screening device.

Background

Concrete is an indispensable material in building construction, cement is used as cementing material, and sand and stone are used as aggregate; mixing with water (which may contain additives and admixtures) in a certain proportion, and stirring to obtain the cement concrete, also called ordinary concrete. The particle diameter of the sand directly determines whether the quality of the stirred concrete is qualified.

Currently, when screening sand, screening is usually performed manually by using a screen. Firstly, selecting a screen with proper mesh number, supporting the screen, throwing raw sand to the screen by a worker through a shovel, enabling sand with the particle diameter according with the required size to pass through the screen and collect the sand after the screen, and enabling sand and stones with larger particle diameters to slide to the bottom of the screen without passing through the screen. The method has low screening efficiency and high labor intensity, and influences the construction progress.

Disclosure of Invention

The utility model aims to at least solve one of the technical problems mentioned in the background art, can improve the screening efficiency of sand and stone and accelerate the construction progress.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a grit sieving mechanism, includes frame and the fixed screening drum that sets up in the frame, the screening drum includes barrel, screw thread pay-off pole and first motor, the barrel is equipped with the cavity, the screw thread pay-off pole is located in the cavity and with the barrel rotates to be connected, first motor is fixed to be set up in the frame and with screw thread pay-off pole transmission is connected, the upside of barrel one end be equipped with the feed inlet of cavity intercommunication, the bottom side of barrel is followed screw thread pay-off pole direction of transmission has set gradually with first screen cloth mouth, second screen cloth mouth and the third screen cloth mouth of cavity intercommunication, first screen cloth mouth is equipped with first screen cloth, the second screen cloth mouth is equipped with the second screen cloth, just the screen cloth aperture of first screen cloth is less than the screen cloth aperture of second screen cloth mouth.

Further, one end of the threaded feeding rod penetrates out of the cylinder body and is provided with a first fluted disc, a transmission shaft of the first motor is provided with a second fluted disc, and the second fluted disc is in transmission connection with the first fluted disc through a first chain.

Further, the feed inlet is provided with a storage hopper, and the storage hopper is connected with the feed inlet in a conducting way through a discharge pipe.

Further, be provided with anti-blocking mechanism in the discharging pipe, anti-blocking mechanism is including anti-blocking blade and connecting axle, anti-blocking blade is provided with a plurality of, just anti-blocking blade evenly encircles fixedly to be in on the connecting axle, the connecting axle both ends respectively with the discharging pipe rotates to be connected, just connecting axle one end wears out the discharging pipe is outer and be equipped with the third fluted disc, the transmission shaft of first motor is equipped with the fourth fluted disc, the fourth fluted disc pass through the second chain with the transmission of third fluted disc is connected.

Further, barrel bottom is equipped with mediation mechanism, mediation mechanism includes mediation brush, threaded rod and slide bar, the threaded rod with the slide bar sets up relatively the bottom of barrel, the threaded rod with the frame rotates to be connected, just threaded rod second motor drive rotates, the slide bar with the frame rotates to be connected fixed connection, mediation brush one end thread bush is established outside the threaded rod, the other end with slide bar sliding connection, so that when the threaded rod rotated, the mediation brush was followed the axial direction of barrel removes, just the one side of mediation brush with barrel butt.

Further, the second motor is fixedly connected with one end of the frame far away from the first motor, and a transmission shaft of the second motor is provided with a first bevel gear; one end of the threaded rod penetrates through the frame and is fixedly provided with a second bevel gear, and the second bevel gear is meshed with the first bevel gear.

Further, the frame is fixedly provided with a connecting frame, the connecting frame is provided with three guide hoppers, and the guide hoppers are aligned with the corresponding first screening opening, second screening opening and third screening opening respectively.

The beneficial effects of the utility model are as follows:

1. send into the cavity with the grit through the feed inlet in, under the effect of first motor, screw thread feed rod rotates, under screw thread feed rod's drive, the grit in the cavity is along the axial direction of barrel and towards keeping away from the feed inlet direction removal for the grit passes through first screening port, second screening port and third screening port in proper order, and when the grit passes through first screening port, the less sand of particle diameter discharges through first screen cloth, and when the grit passes through the second screening port, the great sand of particle diameter discharges through the second screen cloth, and debris such as the particle diameter of rubble is great discharges through the third screening port. According to the utility model, manual screening is not needed, the screening efficiency of sand is improved, so that the construction progress is accelerated, and sand can be screened in a grading manner, so that sand with different particle diameters can be used according to different requirements.

2. The sand and gravel can be injected into the storage hopper by using the conveying belt or the truck, so that the labor intensity is further reduced, and in order to prevent the discharge pipe from being blocked by sand and gravel, the anti-blocking blades are arranged to turn the sand and gravel of the discharge pipe, and meanwhile, the discharge can be realized, so that the discharge pipe is prevented from being blocked by sand and gravel. And the connecting shaft is driven by the first motor, so that the motor is not required to be additionally arranged, and the cost is reduced.

3. Under the effect of second motor, the threaded rod rotates for the mediation brush removes along the axial direction of barrel, thereby brushes first screen cloth and second screen cloth and sweeps, with clear away the grit of jam at first screen cloth and second screen cloth, avoids the jam of first screen cloth and second screen cloth and influences grit screening efficiency.

Drawings

FIG. 1 is a schematic view of a sand screening apparatus according to a preferred embodiment of the present utility model.

FIG. 2 is a schematic view of a screening cylinder of a sand screening apparatus according to a preferred embodiment of the present utility model.

FIG. 3 is a schematic view of a dredging brush of a sand screening apparatus according to a preferred embodiment of the present utility model.

FIG. 4 is a schematic view of a second motor of the sand screening device according to a preferred embodiment of the present utility model.

In the figure, 1-rack, 11-supporting leg, 12-first fixed plate, 13-second fixed plate, 2-screening cylinder, 21-cylinder, 211-feed inlet, 212-first screening inlet, 213-second screening inlet, 214-third screening inlet, 22-screw feed bar, 221-first fluted disc, 23-first motor, 231-second fluted disc, 232-first chain, 233-fourth fluted disc, 234-second chain, 31-first screen, 32-second screen, 4-storage hopper, 41-discharge pipe, 411-anti-blocking blade, 412-connecting shaft, 413-third fluted disc, 5-dredging brush, 501-mounting rack, 502-brush head, 503-transmission piece, 51-threaded rod, 511-second bevel gear, 52-slide bar, 53-second motor, 531-first bevel gear, 6-connecting frame, 61-guide hopper.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, a sand screening device according to a preferred embodiment of the present utility model includes a frame 1 and a screening cylinder 2 fixedly disposed on the frame 1. The frame 1 of the embodiment comprises four supporting feet 1, and supporting feet 11 are respectively and fixedly connected with the periphery of the screening cylinder 2.

The screening cylinder 2 comprises a cylinder 21, a screw feed rod 22 and a first motor 23.

The cylinder 21 is provided with a cavity 210, the screw feeding rod 22 is arranged in the cavity 210 and is rotationally connected with the cylinder 21, and two ends of the screw feeding rod 22 can be rotationally connected with the cylinder 21 through bearings. The first motor 23 is fixedly arranged on the frame 1 and is in transmission connection with the threaded feeding rod 22, a feeding port 211 communicated with the cavity 210 is formed in the upper side of one end of the cylinder 21, a first screening port 212, a second screening port 213 and a third screening port 214 communicated with the cavity 210 are sequentially formed in the bottom side of the cylinder 21 along the transmission direction of the threaded feeding rod 22, the first screening port 212 is provided with a first screen 31, the second screening port 213 is provided with a second screen 32, and the screen aperture of the first screen 31 is smaller than that of the second screen 213.

The screening cylinder 2 is provided with a first fixing plate 12 between the supporting legs 11 near one end of the feeding hole 211, a first motor 23 is fixedly arranged on the first fixing plate 12, as shown in fig. 1 and 2, one end of a threaded feeding rod 22 penetrates out of the cylinder 21 and is provided with a first fluted disc 221, a transmission shaft of the first motor 23 is provided with a second fluted disc 231, and the second fluted disc 231 is in transmission connection with the first fluted disc 221 through a first chain 232.

Sand is fed into the cavity 210 through the feeding hole 211, the threaded feeding rod 22 rotates under the action of the first motor 23, sand in the cavity 210 moves along the axial direction of the cylinder 21 and far away from the feeding hole 211 under the driving of the threaded feeding rod 22, so that sand sequentially passes through the first screening hole 212, the second screening hole 213 and the third screening hole 214, sand with smaller particle diameter is discharged through the first screen mesh 31 when sand passes through the first screening hole 212, sand with larger particle diameter is discharged through the second screen mesh 32 when sand passes through the second screening hole 213, and sundries with larger particle diameter such as broken stone are discharged through the third screening hole 214.

This embodiment need not the manual work and filters, has improved the screening efficiency of grit to accelerate the construction progress, can carry out hierarchical screening to the grit moreover, thereby can use the sand of different particle diameters according to the demand of difference.

As shown in fig. 1 and 2, the feed port 211 is provided with a storage hopper 4, and the storage hopper 4 is connected to the feed port 211 by a discharge pipe 41. The storage hopper 4 of the present embodiment is fixedly provided on the cylinder 21.

The anti-blocking mechanism comprises anti-blocking blades 411 and a connecting shaft 412, wherein the anti-blocking blades 411 are arranged in a plurality of mode, the anti-blocking blades 411 are uniformly and fixedly arranged on the connecting shaft 412 in a surrounding mode, two ends of the connecting shaft 412 are respectively connected with the discharging pipe 41 in a rotating mode, one end of the connecting shaft 412 penetrates out of the discharging pipe 41 and is provided with a third fluted disc 413, a transmission shaft of the first motor 23 is provided with a fourth fluted disc 233, and the fourth fluted disc 233 is in transmission connection with the third fluted disc 413 through a second chain 234. The anti-blocking blades 411 of the embodiment are provided with two anti-blocking blades 411, and when the anti-blocking blades 411 rotate, sand and stones in the discharging pipe 41 can be turned over, so that anti-blocking and discharging are realized.

This embodiment utilizes conveyer belt or freight train, can pour into the grit into in the storage hopper 4, further reduces intensity of labour, in order to avoid discharging pipe 41 to be blockked up by the grit, and this embodiment sets up anti-blocking vane 411 and can turn the grit of discharging pipe 41, can realize the discharge simultaneously to prevent discharging pipe 41 to be blockked up by the grit. And the connecting shaft 412 is driven by the first motor 23, so that no additional motor is needed, and the cost is reduced.

As shown in fig. 1, 3 and 4, a dredging mechanism is provided at the bottom of the cylinder 21, and the dredging mechanism includes a dredging brush 5, a threaded rod 51 and a sliding rod 52.

The threaded rod 51 and the sliding rod 52 are oppositely arranged at the bottom of the cylinder 21, the threaded rod 51 is rotationally connected with the frame 1, the threaded rod 51 is driven to rotate by the second motor 53, the sliding rod 52 is rotationally connected with the frame 1 and fixedly connected with the frame 1, one end of the dredging brush 5 is sleeved outside the threaded rod 51 in a threaded manner, the other end of the dredging brush 5 is slidingly connected with the sliding rod 52, so that when the threaded rod 51 rotates, the dredging brush 5 moves along the axial direction of the cylinder 21, and one surface of the dredging brush 5 is abutted with the cylinder 21.

Both ends of the threaded rod 51 are respectively rotatably connected with the two supporting feet 11 on one side of the screening cylinder 2, and both ends of the sliding rod 52 are respectively fixedly connected with the two supporting feet 11 on one side of the screening cylinder 2. The dredging brush 5 in this embodiment comprises a mounting frame 501, a brush head 502 and a driving member 503, wherein the mounting frame 501 has an arc structure, the inner ring of the mounting frame 501 is fixedly connected with the brush head 502, and the brush head 502 is a steel brush. Two driving members 503 are provided, and the two driving members 503 are fixedly connected with two sides of the mounting frame 501 respectively, wherein one driving member 503 is slidably connected with the sliding rod 52, and the other driving member 503 is sleeved outside the threaded rod 51. By driving the threaded rod 51 to rotate, the mounting bracket 501 can be moved in the axial direction of the screening cylinder 2.

Under the effect of second motor 53, threaded rod 51 rotates for dredge brush 5 removes along the axial direction of barrel 21, thereby brushes first screen cloth 31 and second screen cloth 32 and sweep, with the grit of jam at first screen cloth 31 and second screen cloth 32 clear away, avoids the jam of first screen cloth 31 and second screen cloth 32 and influences grit screening efficiency.

In this embodiment, the second motor 53 is fixedly connected to an end of the frame 1 far away from the first motor 23, and a transmission shaft of the second motor 53 is provided with a first bevel gear 531. One end of the threaded rod 51 is penetrated through the frame 1 and fixedly provided with a second bevel gear 511, and the second bevel gear 511 is meshed with the first bevel gear 531. In this embodiment, the stroke of the dredging brush 5 is determined by controlling the time of each forward rotation and reverse rotation of the second motor 53, so that the dredging brush 5 brushes the first screen 31 and the second screen 32 back and forth.

A second fixing plate 13 is arranged between supporting legs 11 at one end, far away from the feeding hole 211, of the screening cylinder 2, a second motor 53 is fixedly arranged on the second fixing plate 13, and the first bevel gear 531 is driven to rotate through a second bevel gear 511, so that the threaded rod 51 is driven to rotate.

As shown in fig. 1, the frame 1 is fixedly provided with a connecting frame 6, the connecting frame 6 is provided with three guide hoppers 61, and the guide hoppers 61 are aligned with the corresponding first screening opening 212, second screening opening 213 and third screening opening 214 respectively. The sand and gravel can be discharged from the first, second, and third screening ports 212, 213, and 214 by the guide hopper 61.

The flow of grit sieving mechanism of this embodiment filters the grit does: firstly, sand can be injected into the storage hopper 4 by using a conveying belt or a truck, the first motor 23 is started, and the connecting shaft 412 rotates, so that the anti-blocking blades 411 turn over and discharge sand in the discharge pipe 41.

Simultaneously, the screw feed rod 22 rotates, sand in the cavity 210 moves along the axial direction of the cylinder 21 and far away from the feed port 211, sand sequentially passes through the first screening port 212, the second screening port 213 and the third screening port 214, sand with smaller particle diameter is discharged through the first screen 31 when the sand passes through the first screening port 212, and sand with larger particle diameter is discharged through the second screen 32 when the sand passes through the second screening port 213; debris and other debris having a larger particle diameter are discharged through the third screen outlet 214.

When the first screen 31 and the second screen 32 are blocked, the second motor 53 is started, and the dredging brush 5 moves reciprocally along the axial direction of the cylinder 21 to brush the first screen 31 and the second screen 32, so as to remove sand and gravel blocked on the first screen 31 and the second screen 32.

Claims (7)

1. The utility model provides a grit sieving mechanism, its characterized in that, including frame (1) and fixed screening drum (2) that set up on frame (1), screening drum (2) include barrel (21), screw thread feed rod (22) and first motor (23), barrel (21) are equipped with cavity (210), screw thread feed rod (22) are located in cavity (210) and with barrel (21) rotate and connect, first motor (23) are fixed to be set up on frame (1) and with screw thread feed rod (22) transmission is connected, the upside of barrel (21) one end be equipped with feed inlet (211) of cavity (210) intercommunication, the bottom side of barrel (21) is followed screw thread feed rod (22) direction of transmission have set gradually with first screen cloth (212), second screen cloth (213) and third screen cloth (214) of cavity (210) intercommunication, first screen cloth (212) are equipped with first screen cloth (31), second screen cloth (213) are equipped with second screen cloth aperture (213), and second screen cloth (213) aperture (31) are less than screen cloth (213).

2. A sand screening apparatus according to claim 1, wherein: one end of the threaded feeding rod (22) penetrates out of the cylinder body (21) and is provided with a first fluted disc (221), a transmission shaft of the first motor (23) is provided with a second fluted disc (231), and the second fluted disc (231) is in transmission connection with the first fluted disc (221) through a first chain (232).

3. A sand screening apparatus according to claim 2, wherein: the feeding hole (211) is provided with a storage hopper (4), and the storage hopper (4) is connected with the feeding hole (211) in a conducting way through a discharging pipe (41).

4. A sand screening apparatus according to claim 3, wherein: the anti-blocking mechanism is arranged in the discharging pipe (41), the anti-blocking mechanism comprises anti-blocking blades (411) and a connecting shaft (412), the anti-blocking blades (411) are provided with a plurality of anti-blocking blades (411), the anti-blocking blades (411) are evenly and fixedly arranged on the connecting shaft (412) in a surrounding mode, two ends of the connecting shaft (412) are respectively connected with the discharging pipe (41) in a rotating mode, one end of the connecting shaft (412) penetrates out of the discharging pipe (41) and is provided with a third fluted disc (413), a transmission shaft of the first motor (23) is provided with a fourth fluted disc (233), and the fourth fluted disc (233) is connected with the third fluted disc (413) in a transmission mode through a second chain (234).

5. A sand screening apparatus according to claim 1, wherein: the utility model discloses a dredge brush, including barrel (21) bottom, dredge mechanism is equipped with, dredge mechanism includes dredge brush (5), threaded rod (51) and slide bar (52), threaded rod (51) with slide bar (52) set up relatively the bottom of barrel (21), threaded rod (51) with frame (1) rotate and are connected, just threaded rod (51) second motor (53) drive rotates, slide bar (52) with frame (1) rotate and connect fixed connection, dredge brush (5) one end thread bush is established outside threaded rod (51), the other end with slide bar (52) sliding connection, so that when threaded rod (51) rotated, dredge brush (5) are followed the axial direction of barrel (21) removes, just one side of dredge brush (5) with barrel (21) butt.

6. A sand screening apparatus according to claim 5, wherein: the second motor (53) is fixedly connected with one end, far away from the first motor (23), of the frame (1), and a first conical gear (531) is arranged on a transmission shaft of the second motor (53); one end of the threaded rod (51) is arranged on the frame (1) in a penetrating mode and is fixedly provided with a second bevel gear (511), and the second bevel gear (511) is meshed with the first bevel gear (531).

7. A sand screening apparatus according to claim 1, wherein: the frame (1) is fixedly provided with a connecting frame (6), the connecting frame (6) is provided with three guide hoppers (61), and the guide hoppers (61) are aligned with the corresponding first screening opening (212), second screening opening (213) and third screening opening (214) respectively.