A construction sand and gravel screening equipment

Abstract

The present application relates to the technical field of screening equipment, and discloses a construction sand and gravel screening equipment, including a lower shell, a driving motor is fixedly installed in the middle of one side of the outer surface of the lower shell, and a transmission shaft running through the left and right is provided on the output shaft of the driving motor, a first spiral sleeve is movably sleeved in the inner cavity of the lower shell, and a friction wheel is provided at the right end of the outer surface of the first spiral sleeve to form a transmission connection with the transmission shaft. The present application provides a construction sand and gravel screening equipment, for the arrangement of the first spiral sleeve and the second spiral sleeve, a screening mesh can be formed between the first spiral sleeve and the second spiral sleeve to screen the sand and gravel entering the first spiral sleeve, and in the process of continuous rotation of the first spiral sleeve, the size of the screening mesh between the first spiral sleeve and the second spiral sleeve changes regularly to squeeze the sand and gravel entering therein to prevent them from clogging the screening mesh.

Description

Technical Field

[0001] The present application relates to the technical field of screening equipment, and in particular to a construction sand and gravel screening equipment. Background Art

[0002] Sand and gravel screening is an important part of construction, road construction and garden construction. It involves the classification, screening and purification of sand and gravel materials to ensure that the quality of sand and gravel meets the construction requirements. In recent years, with the development and innovation of technology, the technology and process of sand and gravel screening equipment have been continuously developed and improved to improve its quality and efficiency of sand and gravel screening.

[0003] However, in actual use, the existing sand and gravel screening equipment is prone to clogging of the screening mesh due to sand and gravel of similar size, which leads to low efficiency in sand and gravel screening. In addition, it is difficult to clean the clogged mesh, which often requires the machine to be shut down and the screening mesh to be disassembled. This operation is time-consuming and labor-intensive, and the efficiency of cleaning the mesh is relatively low.

[0004] Moreover, when performing multi-stage screening, it is necessary to configure a screen structure with meshes of different specifications, thereby increasing the structural composition and preparation cost of the sand and gravel screening equipment, and invisibly increasing the failure rate of the sand and gravel screening equipment during use, and the stability and reliability are poor.

[0005] Therefore, there is an urgent need for a screening device for sand and gravel to solve the defects of the above-mentioned existing sand and gravel screening devices during actual use. Summary of the Invention

[0006] The present application proposes a construction sand and gravel screening equipment, which has the ability to perform multi-stage screening operations under the same screen structure, and can effectively reduce the probability of the screen holes being blocked. At the same time, it has the advantage of being simpler and more convenient to clean the blocked mesh holes. It is used to solve the problem that the screening mesh holes of the existing sand and gravel screening equipment are easily blocked by sand and gravel of similar sizes during actual use, which leads to lower efficiency in sand and gravel screening and greater difficulty in cleaning the blocked mesh holes. It is often necessary to shut down the machine and disassemble the screening net, which is time-consuming and labor-intensive to operate and has a relatively low efficiency in cleaning the mesh holes. In addition, when performing multi-stage screening, it is necessary to configure a screen structure with mesh holes of different specifications, which increases the structural composition and preparation cost of the sand and gravel screening equipment and invisibly increases the failure rate of the sand and gravel screening equipment during use.

[0007] To achieve the above-mentioned purpose, the present application adopts the following technical solution: a construction sand and gravel screening equipment, including a lower shell, a drive motor is fixedly installed in the middle of one side of the outer surface of the lower shell, and a transmission shaft is provided on the output shaft of the drive motor to pass through the left and right sides, a first spiral sleeve is movably connected in the inner cavity of the lower shell, and a friction wheel is provided at the right end of the outer surface of the first spiral sleeve to form a transmission connection with the transmission shaft, a second spiral sleeve is movably connected on the outer surface of the first spiral sleeve and is located in the inner cavity of the lower shell, the spiral directions of the first spiral sleeve and the second spiral sleeve are opposite, and an upper shell is provided on the top of the outer surface of the second spiral sleeve.

[0008] Furthermore, the pitches of the first spiral sleeve and the second spiral sleeve are set to gradually increase from right to left. At the same time, an annular partition is provided on the inner walls of the lower shell and the upper shell, and the closed chamber formed by the lower shell and the upper shell is divided into equal parts by the annular partition, and a discharge port connected to the equally divided chamber is opened at the bottom of the lower shell.

[0009] Furthermore, the right end of the first spiral sleeve is provided with an extrusion component that can be connected on and off, and is connected to the other end of the outer surface of the transmission shaft through a V-belt, and a linear protrusion is provided on the inner wall of the lower shell, and a linear slot is provided at the end of the second spiral sleeve to cooperate with the linear protrusion on the lower shell.

[0010] Furthermore, an end shaft is fixedly installed on the left end portion of the first spiral sleeve, and a limit plate is movably clamped on the inner end of the end shaft, the end face of which contacts the first spiral sleeve and the second spiral sleeve, and a pulley is threadedly connected on the outer surface of the end shaft, and the pulley is connected to the other end of the outer surface of the transmission shaft through a V-belt.

[0011] Furthermore, an annular groove is provided inside the pulley, and a linkage protrusion that cooperates with the annular groove is fixedly installed on the outer surface of the end shaft. At the same time, an end cover that is movably connected to the end shaft is fixedly installed on the left end surface of the upper shell, and a group of first magnetic blocks are respectively provided on the upper and lower sides of the end cover. A knob is provided at one end of the outer surface of the end shaft, and a group of second magnetic blocks are respectively provided on the left and right sides of the knob. At the same time, a closed chamber formed by the end cover, the knob and the annular groove is filled with magnetorheological fluid.

[0012] The present invention has the following technical effects:

[0013] 1. The present application provides a construction sand and gravel screening equipment. For the arrangement of the first spiral sleeve and the second spiral sleeve, a screening mesh can be formed between the first spiral sleeve and the second spiral sleeve to screen the sand and gravel entering the first spiral sleeve. In the process of continuous rotation of the first spiral sleeve, the size of the screening mesh between the first spiral sleeve and the second spiral sleeve changes regularly to squeeze the sand and gravel entering therein and prevent them from clogging the screening mesh. At the same time, according to the change in the pitch between the first spiral sleeve and the second spiral sleeve, the graded screening operation of the sand and gravel entering the first spiral sleeve can be realized. The operation is simple and easy to use.

[0014] 2. The present application provides a construction sand and gravel screening equipment. For the setting of the extrusion component and the structure thereon, the relative position between the second magnetic block and the first magnetic block thereon can be adjusted by turning the knob, and the connection relationship between the pulley disc and the end shaft can be adjusted. When the end shaft is fixedly connected to the pulley disc, the drive motor is started under the transmission action of the transmission shaft. While driving the first spiral sleeve to rotate, the end shaft can be forced to move to the right to squeeze the first spiral sleeve and the second spiral sleeve, so that the surface of the spiral sleeve is deformed to remove the sand and dust adhering and scaling thereon. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments disclosed herein and, together with the description, serve to explain the principles disclosed herein.

[0016] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a front view of the structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the lower shell and its upper part of the present invention;

[0020] Figure 4 Schematic diagram of the structure of the first spiral sleeve of the present invention;

[0021] Figure 5 Schematic diagram of the structure of the second spiral sleeve of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the upper shell of the present invention;

[0023] Figure 7 It is a half-section view of the structural extrusion component of the present invention.

[0024] In the figure: 1. Lower shell; 2. Drive motor; 3. Transmission shaft; 4. First spiral sleeve; 5. Second spiral sleeve; 6. Upper shell; 7. Extrusion component; 8. Linear protrusion; 9. Annular partition; 10. Discharge port; 11. End shaft; 12. Pulley; 13. Annular groove; 14. Linkage protrusion; 15. Linear slot; 16. End cover; 17. First magnetic block; 18. Knob; 19. Second magnetic block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0026] like Figure 1 、 Figure 2 As shown, a construction sand and gravel screening equipment includes a lower shell 1 with a bracket at the bottom of the outer surface and fixedly installed on a specific working area through the bracket, a driving motor 2 is fixedly installed in the middle of one side of the outer surface of the lower shell 1, and a transmission shaft 3 passing through the left and right sides is provided on the output shaft of the driving motor 2, a first spiral sleeve 4 with a right end connected to the sand and gravel conveying system is movably sleeved in the inner cavity of the lower shell 1, and a friction wheel is provided at the right end of the outer surface of the first spiral sleeve 4 to form a transmission connection with the transmission shaft 3, so that when the driving motor 2 drives the transmission shaft 3 to rotate, the first spiral sleeve 4 can be synchronously driven to rotate accordingly, and the outer surface of the first spiral sleeve 4 and the second spiral sleeve 4 are movably sleeved in the inner cavity of the lower shell 1 The cylinder 5, the spiral directions of the first spiral sleeve 4 and the second spiral sleeve 5 are opposite, and a screening mesh can be formed between the first spiral sleeve 4 and the second spiral sleeve 5 to screen the sand and gravel entering the first spiral sleeve 4, and in the process of continuous rotation of the first spiral sleeve 4, the size of the screening mesh between the first spiral sleeve 4 and the second spiral sleeve 5 changes regularly to squeeze the sand and gravel entering therein to prevent them from clogging the screening mesh, and an upper shell 6 is provided at the top of the outer surface of the second spiral sleeve 5, whose bottom end can be engaged with the lower shell 1, thereby wrapping the second spiral sleeve 5 and the first spiral sleeve 4 therein to prevent sand and gravel from flying around during operation of the sand and gravel screening equipment.

[0027] like Figure 2 、 Figure 3As shown, in the present technical solution, the pitch of the first spiral sleeve 4 and the second spiral sleeve 5 are set to gradually increase from right to left. At the same time, an annular partition 9 is provided on the inner wall of the lower shell 1 and the upper shell 6, and the closed chamber formed by the lower shell 1 and the upper shell 6 is divided into equal parts by the annular partition 9, and a discharge port 10 connected to the equally divided chamber is opened at the bottom of the lower shell 1, and then the graded screening operation of the sand and gravel entering the first spiral sleeve 4 is realized according to the pitch change between the first spiral sleeve 4 and the second spiral sleeve 5, and the graded and screened sand and gravel are transported out through the discharge port 10.

[0028] like Figure 1 、 Figure 2 、 Figure 3 as well as Figure 5 As shown, in the present technical solution, the right end of the first spiral sleeve 4 is provided with an on-off connection extrusion component 7, and is transmission-connected to the other end of the outer surface of the transmission shaft 3 through a V-belt, and a linear protrusion 8 is provided on the inner wall of the lower shell 1, and a linear slot 15 is provided at the end of the second spiral sleeve 5, which cooperates with the linear protrusion 8 on the lower shell 1. When the sand and gravel screening equipment is used for a long time, the extrusion component 7 can be triggered to squeeze the first spiral sleeve 4 and the second spiral sleeve 5 to move to the right, causing the surfaces of the first spiral sleeve 4 and the second spiral sleeve 5 to deform to remove the sand and gravel dust adhering and scaling thereon.

[0029] like Figure 4 、 Figure 6 As shown, in the present technical solution, an end shaft 11 is fixedly installed on the left end portion of the first spiral sleeve 4, and a limit plate is movably clamped on the inner end of the end shaft 11, whose end face contacts the first spiral sleeve 4 and the second spiral sleeve 5, and a pulley disc 12 is threadedly connected on the outer surface of the end shaft 11, and the pulley disc 12 is transmission-connected to the other end of the outer surface of the transmission shaft 3 through a V-belt, and then when the transmission shaft 3 drives the pulley disc 12 to rotate, under the action of the threaded transmission between the end shaft 11 and the pulley disc 12, the end shaft 11 can be forced to move to the right to squeeze the first spiral sleeve 4 and the second spiral sleeve 5.

[0030] like Figure 4 、 Figure 6 as well as Figure 7 As shown, in the present technical solution, an annular groove 13 is provided inside the pulley 12, and a linkage protrusion 14 that cooperates with the annular groove 13 is fixedly installed on the outer surface of the end shaft 11. At the same time, an end cover 16 that is movably sleeved with the end shaft 11 is fixedly installed on the left end surface of the upper shell 6, and a group of first magnetic blocks 17 are respectively provided on the upper and lower sides of the end cover 16, a knob 18 is provided at one end of the outer surface of the end shaft 11, and a group of second magnetic blocks 19 are respectively provided on the left and right sides of the knob 18. At the same time, the closed chamber formed by the end cover 16, the knob 18 and the annular groove 13 is filled with magnetorheological fluid:

[0031] Furthermore, when the sand and gravel screening equipment is operating normally, the first magnetic block 17 and the second magnetic block 19 are staggered with each other, so that the magnetorheological fluid filled in the closed chamber is in a liquid state, the pulley disc 12 and the end shaft 11 are movably connected, and when the drive motor 2 is started and the first spiral sleeve 4 is driven by the transmission shaft 3 to rotate, the end shaft 11 and the limit plate thereon will not squeeze the transmission shaft 3 and the first spiral sleeve 4;

[0032] When it is necessary to remove the sand and dust adhering to and scaling on the surfaces of the transmission shaft 3 and the first spiral sleeve 4, turn the knob 18 so that the second magnetic block 19 thereon corresponds to the first magnetic block 17, thereby generating a magnetorheological fluid filled in the closed chamber and solidifying it so that the pulley 12 and the end shaft 11 are fixedly connected. Start the drive motor 2, and under the transmission action of the transmission shaft 3, while driving the first spiral sleeve 4 to rotate, the end shaft 11 can be forced to move to the right, and the first spiral sleeve 4 and the second spiral sleeve 5 are squeezed to remove the sand and dust adhering to and scaling on their surfaces.

Claims

1. A construction sand and gravel screening device, comprising a lower housing (1), a driving motor (2) being fixedly mounted in the middle of one side of the outer surface of the lower housing (1), and a transmission shaft (3) penetrating left and right is provided on the output shaft of the driving motor (2), characterized in that: A first spiral sleeve (4) is movably sleeved in the inner cavity of the lower shell (1), and a friction wheel is provided at the right end of the outer surface of the first spiral sleeve (4) to form a transmission connection with the transmission shaft (3); a second spiral sleeve (5) is movably sleeved on the outer surface of the first spiral sleeve (4) and is located in the inner cavity of the lower shell (1); the spiral directions of the first spiral sleeve (4) and the second spiral sleeve (5) are opposite, and an upper shell (6) is provided on the top of the outer surface of the second spiral sleeve (5); The right end of the first spiral sleeve (4) is provided with an extrusion component (7) that can be connected on and off, and is transmission-connected to the other end of the outer surface of the transmission shaft (3) through a V-belt, and a linear protrusion (8) is provided on the inner wall of the lower shell (1), and a linear groove (15) that cooperates with the linear protrusion (8) on the lower shell (1) is opened at the end of the second spiral sleeve (5), and an end shaft (11) is fixedly mounted on the left end of the first spiral sleeve (4), and a limit plate whose end surface contacts the first spiral sleeve (4) and the second spiral sleeve (5) is movably clamped at the inner end of the end shaft (11), and a pulley disc (12) is threadedly connected to the outer surface of the end shaft (11), and the pulley disc (12) is transmission-connected to the other end of the outer surface of the transmission shaft (3) through a V-belt.

2. The construction sand and gravel screening equipment according to claim 1, characterized in that: The pitches of the first spiral sleeve (4) and the second spiral sleeve (5) are both set to gradually increase from right to left. At the same time, an annular partition (9) is provided on the inner walls of the lower shell (1) and the upper shell (6), and the closed chamber formed by the lower shell (1) and the upper shell (6) is divided into equal parts by the annular partition (9), and a discharge port (10) connected to the equally divided chamber is opened at the bottom of the lower shell (1).

3. The construction sand and gravel screening equipment according to claim 2, characterized in that: An annular groove (13) is provided inside the pulley (12), and a linkage protrusion (14) matching the annular groove (13) is fixedly installed on the outer surface of the end shaft (11). At the same time, an end cover (16) movably sleeved with the end shaft (11) is fixedly installed on the left end surface of the upper shell (6), and a group of first magnetic blocks (17) are respectively provided on the upper and lower sides of the end cover (16). A knob (18) is provided at one end of the outer surface of the end shaft (11), and a group of second magnetic blocks (19) are respectively provided on the left and right sides of the knob (18). At the same time, a closed chamber formed by the end cover (16), the knob (18) and the annular groove (13) is filled with magnetorheological fluid.

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