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

A sand and gravel screening device

Technical field

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

Background technique

Concrete is an essential material in building construction. Concrete uses cement as the cementing material and sand and stone as aggregates. It is mixed with water (which may contain admixtures and admixtures) in a certain proportion and is stirred to obtain cement concrete. , also called ordinary concrete. The particle diameter of the sand and gravel directly determines whether the quality of the mixed concrete is qualified.

At present, when screening sand and gravel, it is usually done manually using a screen. First select a screen with a suitable mesh size and hold it up. Workers throw the raw sand to the screen with a shovel. Sand with a particle diameter that meets the required size can pass through the screen and be collected behind the screen, while the particle diameter Larger sand and stones cannot pass through the screen and slide to the bottom of the screen. The screening efficiency of the above method is low and the labor intensity is high, which affects the construction progress.

Utility model content

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

In order to achieve the above purpose, the technical solution adopted by this utility model is:

A sand and gravel screening device includes a frame and a screening cylinder fixedly installed on the frame. The screening cylinder includes a barrel, a threaded feeding rod and a first motor. The barrel is provided with a cavity, and the The threaded feeding rod is arranged in the cavity and is rotationally connected with the barrel. The first motor is fixedly installed on the frame and is drivingly connected with the threaded feeding rod. The upper side of one end of the barrel There is a feed port connected to the cavity, and the bottom side of the barrel is provided with a first screening port, a second screening port and a third screening port connected to the cavity along the transmission direction of the threaded feed rod. A screening port, the first screening port is provided with a first screen, the second screening port is provided with a second screen, and the screen aperture of the first screen is smaller than the screen of the second screening port. aperture.

Further, one end of the threaded feeding rod penetrates the outside of the cylinder and is provided with a first toothed plate. The transmission shaft of the first motor is provided with a second toothed wheel. The second toothed wheel is connected to the first toothed wheel through the first chain. The first gear wheel transmission connection.

Further, the feed port is provided with a storage hopper, and the storage hopper is electrically connected to the feed port through a discharge pipe.

Further, an anti-clogging mechanism is provided in the discharge pipe. The anti-clogging mechanism includes an anti-clogging blade and a connecting shaft. There are several anti-clogging blades, and the anti-clogging blades are uniformly fixed around the On the connecting shaft, both ends of the connecting shaft are rotatably connected to the discharge pipe respectively, and one end of the connecting shaft passes out of the discharge pipe and is provided with a third gear plate. The transmission of the first motor The shaft is provided with a fourth toothed wheel, and the fourth toothed wheel is drivingly connected to the third toothed wheel through a second chain.

Further, a dredging mechanism is provided at the bottom of the barrel. The dredging mechanism includes a dredging brush, a threaded rod and a sliding rod. The threaded rod and the sliding rod are arranged opposite to the sliding rod at the bottom of the barrel. The threaded rod The sliding rod is rotatably connected to the frame, and the threaded rod is driven to rotate by the second motor. The sliding rod is rotatably connected to the frame. One end of the dredge brush is threaded outside the threaded rod, and the other end is threadedly sleeved on the outside of the threaded rod. It is slidingly connected to the sliding rod, so that when the threaded rod rotates, the dredge brush moves along the axial direction of the cylinder, and one side of the dredge brush contacts the cylinder.

Further, the second motor is fixedly connected to an end of the frame away from the first motor, and the transmission shaft of the second motor is provided with a first bevel gear; one end of the threaded rod is threaded through the first motor. The frame is fixed with a second bevel gear, and the second bevel gear meshes with the first bevel gear.

Further, the frame is fixedly provided with a connecting frame, and the connecting frame is provided with three guide buckets, and the guide buckets are respectively connected with the corresponding first screening port, the second screening port, and the third screening port. alignment.

The beneficial effects of this utility model are:

1. Feed the sand and gravel into the cavity through the feed port. Under the action of the first motor, the threaded feeding rod rotates. Driven by the threaded feeding rod, the sand and gravel in the cavity move along the axial direction of the cylinder. And move in the direction away from the feed port, so that the sand and gravel pass through the first screening port, the second screening port and the third screening port in sequence. When the sand and gravel pass through the first screening port, the sand with smaller particle diameter passes through the first screen. When the sand and gravel pass through the second screening port, the sand with larger particle diameters is discharged through the second screen, while debris such as gravel and other debris with larger particle diameters is discharged through the third screening port. The utility model does not require manual screening, improves the screening efficiency of sand and gravel to speed up the construction progress, and can carry out graded screening of sand and gravel, so that sand with different particle diameters can be used according to different needs.

2. The conveyor belt or truck can be used to inject sand and gravel into the storage hopper, further reducing labor intensity. In order to prevent the discharge pipe from being blocked by sand and gravel, the utility model is equipped with anti-blocking blades to prevent the sand and gravel from the discharge pipe. Turning over, discharging can be realized at the same time to prevent the discharge pipe from being blocked by sand and gravel. Moreover, the connecting shaft is driven by the first motor, eliminating the need to install an additional motor, thereby reducing costs.

3. Under the action of the second motor, the threaded rod rotates, causing the dredge brush to move along the axial direction of the cylinder, thereby brushing the first screen and the second screen to remove the blockage on the first screen. and the second screen to remove sand and gravel to avoid clogging of the first screen and the second screen and affecting the sand and gravel screening efficiency.

Description of the drawings

Figure 1 is a schematic structural diagram of a sand and gravel screening device according to a preferred embodiment of the present invention.

Figure 2 is a schematic structural diagram of the screening cylinder of the sand and gravel screening device according to a preferred embodiment of the present invention.

Figure 3 is a schematic structural diagram of the dredging brush of the sand and gravel screening device according to a preferred embodiment of the present invention.

Figure 4 is a schematic structural diagram of the second motor of the sand and gravel screening device according to a preferred embodiment of the present invention.

In the figure, 1-frame, 11-supporting feet, 12-first fixed plate, 13-second fixed plate, 2-screening cylinder, 21-cylinder, 211-feed port, 212-first screening port , 213-the second screening port, 214-the third screening port, 22-threaded feeding rod, 221-the first toothed disc, 23-the first motor, 231-the second toothed disc, 232-the first chain, 233-th Four-toothed 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 Tooth plate, 5-dredge brush, 501-mounting frame, 502-brush head, 503-transmission part, 51-threaded rod, 511-second bevel gear, 52-sliding rod, 53-second motor, 531-th One bevel gear, 6 - connecting frame, 61 - guide bucket.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all implementations. example. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

It should be noted that when a component is said to be "anchored" to another component, it can be directly on the other component or there can also be an intermediate component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be an intermediate component present at the same time. When a component is said to be "set on" another component, it can be directly set on the other component or there may be a centered component at the same time. The terms "vertical," "horizontal," "left," "right" and similar expressions are used herein for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the invention belongs. The terms used in the description of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to Figures 1 to 4 at the same time. A sand and gravel screening device in a preferred embodiment of the present invention includes a frame 1 and a screening cylinder 2 fixedly installed on the frame 1. The frame 1 of this embodiment includes four support legs 1, and the support legs 11 are fixedly connected to the surroundings of the screening cylinder 2 respectively.

The screening cylinder 2 includes a cylinder 21 , a threaded feeding rod 22 and a first motor 23 .

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

A first fixed plate 12 is provided between the supporting legs 11 at one end of the screening cylinder 2 near the feed port 211. The first motor 23 is fixedly provided on the first fixed plate 12. As shown in Figures 1 and 2, one end of the threaded feeding rod 22 A first toothed wheel 221 is provided outside the cylinder 21 . The transmission shaft of the first motor 23 is provided with a second toothed wheel 231 . The second toothed wheel 231 is drivingly connected to the first toothed wheel 221 through a first chain 232 .

The sand and gravel are fed into the cavity 210 through the feed port 211. Under the action of the first motor 23, the threaded feeding rod 22 rotates. Driven by the threaded feeding rod 22, the sand and gravel in the cavity 210 move along the cylinder. 21 and moves away from the feed port 211, so that the sand and gravel pass through the first screening port 212, the second screening port 213 and the third screening port 214 in sequence. When the sand and gravel pass through the first screening port 212, the particles Sand with a smaller diameter is discharged through the first screen 31. When the sand passes through the second screening port 213, sand with a larger diameter is discharged through the second screen 32, while gravel and other debris with larger diameters pass through. The third screening port 214 discharges.

This embodiment does not require manual screening, improves the screening efficiency of sand and gravel to speed up the construction progress, and can carry out graded screening of sand and gravel, so that sand with different particle diameters can be used according to different needs.

As shown in FIGS. 1 and 2 , the feed port 211 is provided with a storage hopper 4 , and the storage hopper 4 is electrically connected to the feed port 211 through a discharge pipe 41 . The storage hopper 4 of this embodiment is fixedly mounted on the cylinder 21 .

An anti-clogging mechanism is provided in the discharge pipe 41. The anti-clogging mechanism includes anti-clogging blades 411 and a connecting shaft 412. There are several anti-clogging blades 411, and the anti-clogging blades 411 are evenly fixed around the connecting shaft 412. The connecting shaft Both ends of the connecting shaft 412 are rotatably connected to the discharge pipe 41 respectively, and one end of the connecting shaft 412 passes out of the discharge pipe 41 and is provided with a third gear plate 413. The transmission shaft of the first motor 23 is provided with a fourth gear plate 233. The fourth toothed disc 233 is drivingly connected to the third toothed disc 413 through the second chain 234 . There are two anti-clogging blades 411 in this embodiment. When the anti-clogging blades 411 rotate, they can flip the sand and gravel in the discharge pipe 41 to prevent clogging and discharge materials.

This embodiment uses a conveyor belt or truck to inject sand and gravel into the storage hopper 4, further reducing labor intensity. In order to prevent the discharge pipe 41 from being blocked by sand and gravel, this embodiment is provided with anti-blocking blades 411 that can seal the discharge pipe. The sand and gravel 41 are turned over and discharged at the same time to prevent the discharge pipe 41 from being blocked by the sand and gravel. Moreover, the connecting shaft 412 is driven by the first motor 23, so there is no need to install an additional motor, which reduces costs.

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

The threaded rod 51 and the sliding rod 52 are arranged opposite to each other at the bottom of the cylinder 21. The threaded rod 51 is rotationally connected to the frame 1, and the threaded rod 51 is driven to rotate by the second motor 53. The sliding rod 52 is rotationally connected and fixedly connected to the frame 1 to clear the air. One end of the brush 5 is threadedly sleeved outside the threaded rod 51, and the other end is slidably connected to the sliding rod 52, so that when the threaded rod 51 rotates, the dredge brush 5 moves along the axial direction of the cylinder 21, and one side of the dredge brush 5 is in contact with the sliding rod 52. The cylinder 21 is in contact.

The two ends of the threaded rod 51 are respectively connected to the two support legs 11 on one side of the screening cylinder 2 for rotation, and the two ends of the sliding rod 52 are respectively fixedly connected to the two support legs 11 on one side of the screening cylinder 2. In this embodiment, the dredging brush 5 includes a mounting frame 501, a brush head 502 and a transmission part 503. The mounting frame 501 has an arc-shaped structure, and the inner ring of the mounting frame 501 is fixedly connected to the brush head 502, which is a steel-bristle brush. There are two transmission parts 503 , and the two transmission parts 503 are fixedly connected to both sides of the mounting frame 501 respectively. One transmission part 503 is slidingly connected to the sliding rod 52 , and the other transmission part 503 is threadedly sleeved outside the threaded rod 51 . By driving the threaded rod 51 to rotate, the mounting bracket 501 can be moved along the axial direction of the screening cylinder 2 .

Under the action of the second motor 53, the threaded rod 51 rotates, causing the dredge brush 5 to move along the axial direction of the cylinder 21, thereby brushing the first screen 31 and the second screen 32 to remove the blockage. The sand and gravel in the first screen 31 and the second screen 32 are removed to avoid clogging of the first screen 31 and the second screen 32 and affecting the sand and gravel screening efficiency.

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

A second fixed plate 13 is provided between the supporting legs 11 at the end of the screening cylinder 2 away from the feed port 211. The second motor 53 is fixedly installed on the second fixed plate 13 and drives the first bevel gear through the second bevel gear 511. 531 rotates to drive and rotate the threaded rod 51.

As shown in Figure 1, the frame 1 is fixedly provided with a connecting frame 6. The connecting frame 6 is provided with three guide buckets 61. The guide buckets 61 are respectively connected with the corresponding first screening port 212, the second screening port 213 and the third screening port 214. alignment. Under the action of the guide bucket 61, the sand and gravel discharged from the first screening port 212, the second screening port 213 and the third screening port 214 can be collected respectively.

The process of screening sand by the sand and gravel screening device of this embodiment is as follows: first, use a conveyor belt or truck to inject sand and gravel into the storage hopper 4, start the first motor 23, and rotate the connecting shaft 412, so that the anti-clogging blades 411 turns over and discharges the sand and gravel in the discharge pipe 41 .

At the same time, the threaded feeding rod 22 rotates, and the sand and gravel in the cavity 210 move along the axial direction of the cylinder 21 and away from the feed port 211. The sand and gravel pass through the first screening port 212, the second screening port 213, and the third screening port in sequence. Screening port 214. When the sand and gravel pass through the first screening port 212, the sand with smaller particle diameter is discharged through the first screen 31. When the sand and gravel pass through the second screening port 213, the sand with larger particle diameter passes through the second screen. The particles are discharged through the net 32; gravel and other debris with larger particle diameters are discharged through the third screening port 214.

When the first screen 31 and the second screen 32 are clogged, the second motor 53 of the controller is started, and the dredge brush 5 reciprocates along the axial direction of the cylinder 21 to clean the first screen 31 and the second screen 32 . The second screen 32 is brushed to remove sand and gravel blocked in the first screen 31 and the second screen 32 .

Claims (7)

1. A sand and gravel screening device, characterized in that it includes a frame (1) and a screening cylinder (2) fixedly arranged on the frame (1), and the screening cylinder (2) includes a cylinder (21 ), a threaded feeding rod (22) and a first motor (23). The barrel (21) is provided with a cavity (210), and the threaded feeding rod (22) is located in the cavity (210). Rotatingly connected with the barrel (21), the first motor (23) is fixedly installed on the frame (1) and is drivingly connected with the threaded feeding rod (22). The barrel (21) The upper side of one end is provided with a feed port (211) connected to the cavity (210), and the bottom side of the barrel (21) is sequentially provided with a feed port (211) connected to the threaded feeding rod (22) along the transmission direction. The first screening port (212), the second screening port (213) and the third screening port (214) are connected to the cavity (210), and the first screening port (212) is provided with a first screen mesh (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 the screen aperture of the second screening port (213). 2. A sand and gravel screening device according to claim 1, characterized in that: one end of the threaded feeding rod (22) penetrates the outside of the cylinder (21) and is provided with a first toothed disk (221), The transmission shaft of the first motor (23) is provided with a second toothed wheel (231), and the second toothed wheel (231) is drivingly connected to the first toothed wheel (221) through a first chain (232). 3. A sand and gravel screening device according to claim 2, characterized in that: the feed inlet (211) is provided with a storage hopper (4), and the storage hopper (4) passes through the discharge pipe (41) It is electrically connected to the feed port (211). 4. A sand and gravel screening device according to claim 3, characterized in that: an anti-clogging mechanism is provided in the discharge pipe (41), and the anti-clogging mechanism includes an anti-clogging blade (411) and a connecting shaft. (412), there are several anti-blocking blades (411), and the anti-blocking blades (411) are uniformly fixed around the connecting shaft (412), and the two ends of the connecting shaft (412) are respectively It is rotatably connected to the discharge pipe (41), and one end of the connecting shaft (412) passes out of the discharge pipe (41) and is provided with a third gear plate (413). The first motor (412) The transmission shaft of 23) is provided with a fourth toothed wheel (233), and the fourth toothed wheel (233) is drivingly connected to the third toothed wheel (413) through a second chain (234). 5. A sand and gravel screening device according to claim 1, characterized in that: a dredge mechanism is provided at the bottom of the barrel (21), and the dredge mechanism includes a dredge brush (5), a threaded rod (51) and Sliding rod (52), the threaded rod (51) and the sliding rod (52) are arranged at the bottom of the barrel (21) opposite to each other, and the threaded rod (51) rotates with the frame (1) connection, and the threaded rod (51) is driven to rotate by the second motor (53), the sliding rod (52) is rotationally and fixedly connected to the frame (1), and one end of the dredging brush (5) is threaded Outside the threaded rod (51), the other end is slidingly connected to the sliding rod (52), so that when the threaded rod (51) rotates, the dredging brush (5) moves along the cylinder (21) ) moves in the axial direction, and one side of the dredging brush (5) is in contact with the cylinder (21). 6. A sand and gravel screening device according to claim 5, characterized in that: the second motor (53) is fixedly connected to an end of the frame (1) away from the first motor (23), And the transmission shaft of the second motor (53) is provided with a first bevel gear (531); one end of the threaded rod (51) is passed through the frame (1) and is fixed with a second bevel gear. (511), and the second bevel gear (511) meshes with the first bevel gear (531). 7. A sand and gravel screening device according to claim 1, characterized in that: the frame (1) is fixedly provided with a connecting frame (6), and the connecting frame (6) is provided with three guide buckets (61 ), the guide bucket (61) is respectively aligned with the corresponding first screening port (212), the second screening port (213) and the third screening port (214).