Coarse aggregate desilting device in dry production process
By designing a coarse aggregate mud removal device in dry process sand production, using the combination of inclined chutes, screening parts, pile columns and negative pressure air ducts, the low production efficiency problem caused by coarse aggregate powder is solved, and the production efficiency problem is achieved. Pre-clean mud powder and improve production efficiency.
Patent Information
- Application Number
- CN202323400209.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-13
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-13
AI Technical Summary
In the production of dry machine sand, coarse aggregate powder coating seriously leads to low production efficiency. The existing technology attempts to remove mud by reducing production capacity, but the effect is poor, resulting in high mud content and reduced yield.
Design a coarse aggregate mud removal device in dry production process, including installing inclined chutes, screening parts, pile columns and negative pressure air ducts above the aggregate tape machine, and cleaning the mud powder on the surface of the aggregate through screening and collision , use negative pressure air duct to discharge dust, clean up the aggregation and mud powder in advance, and reduce subsequent mud removal pressure.
The production efficiency is improved, the pressure of desilt in subsequent processes is reduced, and the blocking of materials is cleared through the vibrator, thereby realizing the centralized collection of mud powder and inferior aggregate.
Smart Images
Figure CN222267871U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of machine-made sand production equipment, in particular to a coarse aggregate desludging device in a dry production process. Background Art
[0002] When the machine-made sand field adopts dry production, the coarse aggregate is easy to be coated with powder during the screening process of the screening machine. The process of cleaning the powder on the surface of the coarse aggregate is called mud removal. In actual production, the 5-10mm aggregate is most seriously coated with powder. For this reason, the mud is often removed by reducing production capacity and setting a dust removal pipeline on the upper part of the aggregate belt conveyor. This method is affected by the mud content. Generally, the higher the mud content, the further the coarse aggregate output can be reduced, which ultimately leads to low production efficiency and low efficiency of the entire production system. Utility Model Content
[0003] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology, to provide a coarse aggregate desilting device in a dry production process, by installing a desilting device above the aggregate belt conveyor, the aggregate mud powder entering the inclined chute can be screened, and the smaller-diameter aggregate can be screened out, and at the same time, the coarse aggregate collides with the piles during the falling process in the inclined chute, so that the mud powder on the aggregate surface is scattered, and the scattered dust is discharged through the negative pressure air duct. By pre-cleaning the smaller-diameter aggregate and the mud powder on the aggregate surface, the pressure of mud removal in the subsequent process is reduced, and the production efficiency is improved.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a coarse aggregate desludging device in a dry production process, which includes an inclined chute with openings at upper and lower ends, a sub-screening portion is provided on the upper bottom wall of the inclined chute, a plurality of piles are arranged on the bottom wall of the inclined chute and at the downstream end of the sub-screening portion, a dust exhaust hole is provided on the top wall of the inclined chute, and a negative pressure air duct is connected to the inclined chute at the position of the dust exhaust hole.
[0005] The sub-screening part is a screen hole arranged on the bottom wall of the inclined chute.
[0006] The sub-screening part is a window arranged on the bottom wall of the inclined chute, and a screen plate or screen mesh installed at the window.
[0007] The piles are arranged in multiple rows and in a plum blossom shape.
[0008] The height of the pile is not less than 1 / 3 of the empty space height in the inclined chute.
[0009] A material guide trough is installed on the lower side of the inclined chute and at the screening part.
[0010] A vibrator is installed at the bottom of the inclined chute.
[0011] A connector with a larger bottom and a smaller top is arranged at the lower part of the negative pressure air duct, wherein the larger end of the connector is connected to the dust exhaust hole, and the smaller end of the connector is connected to the negative pressure air duct.
[0012] A material return tape machine is arranged below the material guide trough.
[0013] The utility model has the following beneficial effects:
[0014] 1. The utility model installs a mud removal device above the aggregate belt conveyor, which can screen the aggregate mud powder entering the inclined chute and screen out the small-diameter aggregate. At the same time, the coarse aggregate collides with the pile during the falling process in the inclined chute, so that the mud powder on the surface of the aggregate is scattered, and the scattered dust is discharged through the negative pressure air duct. The mud removal device of the present application can pre-clean the small-diameter aggregate and the mud powder on the surface of the aggregate, reduce the pressure of mud removal in the subsequent process, and improve production efficiency.
[0015] 2. The utility model has a vibrator installed at the bottom of the inclined chute. When material blockage occurs inside the inclined chute, the vibrator is turned on to clear the blockage in the inclined chute.
[0016] 3. The utility model is provided with a material return belt conveyor below the material guide trough, so as to facilitate the centralized collection of the sieved mud powder and small-diameter aggregates. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0018] Figure 1 It is a schematic diagram of the structure of the utility model.
[0019] Figure 2 It is a schematic diagram of the bottom wall structure of the inclined chute of the utility model.
[0020] In the figure: aggregate belt conveyor 1, inclined chute 2, window 21, dust discharge hole 22, sub-screening part 3, pile column 4, negative pressure air duct 5, connector 51, vibrator 6, material guide trough 7, return material belt conveyor 8. DETAILED DESCRIPTION
[0021] like Figure 1-2As shown, a device for removing mud from coarse aggregate in a dry production process comprises an inclined chute 2 with openings at the upper and lower ends, a screening section 3 is provided on the upper bottom wall of the inclined chute 2, a plurality of piles 4 are arranged on the bottom wall of the inclined chute 2 and at the downstream end of the screening section 3, a dust discharge hole 22 is provided on the top wall of the inclined chute 2, and a negative pressure air duct 5 is connected to the inclined chute 2 at the position of the dust discharge hole 22. By installing a mud removal device above the aggregate belt conveyor 1, the aggregate dust falling into the inclined chute 2 can be screened in advance, and the sub-diameter aggregate can be screened out. At the same time, the coarse aggregate collides with the piles 4 during the falling process in the inclined chute 2, so that the mud powder on the surface of the aggregate is scattered, and the scattered dust is discharged through the negative pressure air duct 5. Through the mud removal device of the present application, the sub-diameter aggregate and the mud powder on the surface of the aggregate can be cleaned in advance, reducing the pressure of mud removal in subsequent processes and improving production efficiency.
[0022] In a preferred embodiment, the sub-screening portion 3 is a screen hole provided on the bottom wall of the inclined chute 2. In other words, the screen hole and the bottom wall of the inclined chute 2 are integrated.
[0023] In another preferred embodiment, see Figure 1 The screening part 3 is a window 21 arranged on the bottom wall of the inclined chute 2, and a sieve plate or screen installed at the window 21. Such a structural feature has the following two points: first, it is convenient for processing the inclined chute 2; second, the sieve plate or screen can be replaced when the sieve plate or screen is deformed or the aggregate particle size changes. The sieve plate or screen is installed at the window 21 of the bottom wall of the inclined chute 2 through a pressing plate and bolts. Of course, the sieve plate or screen can also be welded at the window 21 of the bottom wall of the inclined chute 2.
[0024] In a preferred embodiment, the piles 4 are arranged in multiple rows and in a plum blossom shape. The plum blossom shape is a special term. Specifically, the plum blossom shape is a five-point arrangement. Figure 2 The plum blossom arrangement shown in the figure is a structure with upper and lower layers staggered.
[0025] Furthermore, the height of the pile 4 is not less than 1 / 3 of the height of the inner space of the inclined chute 2, so that coarse aggregate of a certain thickness can collide with the pile 4. Preferably, the height of the pile 4 is 1 / 2 of the height of the inner space of the inclined chute 2.
[0026] Furthermore, a material guide trough 7 is installed on the lower side of the inclined chute 2 and at the screening part 3 to facilitate the discharge of the screened mud powder and small-diameter aggregate.
[0027] See also Figure 1 A vibrator 6 is installed at the bottom of the inclined chute 2. The vibrator 6 is provided to clear the blockage in the inclined chute 2. When the blockage occurs inside the inclined chute 2, the vibrator 6 is turned on.
[0028] Furthermore, a connector 51 with a larger bottom and a smaller top is provided at the lower part of the negative pressure air duct 5, the larger end of the connector 51 is connected to the dust discharge hole 22, and the smaller end of the connector 51 is connected to the negative pressure air duct 5. With the above structure, a larger dust discharge hole 22 can be opened in the inclined chute 2 when the diameter of the negative pressure air duct 5 is fixed. Preferably, the connector 51 adopts a round-square reducer.
[0029] In order to facilitate the centralized collection of screened dust and undersized aggregates, see Figure 1 A return material belt conveyor 8 is provided below the material guide trough 7.
[0030] The action process or principle of the utility model is as follows:
[0031] The inclined chute 2 is installed above the aggregate belt conveyor 1, and the lower end opening of the inclined chute 2 is located above the aggregate belt conveyor 1, and the coarse aggregate flows in from the upper end opening of the inclined chute 2. A window is opened at the upper part of the bottom wall of the inclined chute 2 to lay a steel screen to form a sub-screening part 3, and a material guide trough 7 is set at the bottom of the window to communicate with the return material belt conveyor 8. Piles 4 are arranged on the bottom walls of the middle and lower inclined chutes, and the piles 4 are arranged in a plum blossom shape. At the same time, a dust discharge hole 22 is opened on the top wall of the middle inclined chute to install a Φ300mm negative pressure air duct 5, and the negative pressure air duct 5 is connected to the negative pressure bag dust removal system.
[0032] The aperture of the sieve hole is determined according to the particle size of the coarse aggregate and the angle of the inclined chute to screen out the sub-sized aggregate and mud powder in the aggregate.
[0033] The piles 4 are welded from Φ25mm round steel, the height of which is 1 / 2 of the height of the inclined chute, and are arranged in a plum blossom shape. The coarse aggregate collides with the piles 4 during the falling process of the inclined chute, causing mud powder to scatter on the surface of the aggregate.
[0034] The negative pressure air duct 5 is made of a Φ300mm steel pipe with a wall thickness of 2mm. It is installed in the center of the lower and middle inclined chute and is connected to the main pipe of the negative pressure bag dust removal system to collect the scattered dust into the collecting hopper of the dust removal system.
Claims
1. A device for removing mud from coarse aggregate in a dry production process, characterized in that: The invention comprises an inclined chute (2) with upper and lower ends opened, a sub-screening portion (3) being provided on the upper bottom wall of the inclined chute (2), a plurality of piles (4) being arranged on the bottom wall of the inclined chute (2) and at the downstream end of the sub-screening portion (3), a dust discharge hole (22) being provided on the top wall of the inclined chute (2), and a negative pressure air duct (5) being connected to the inclined chute (2) at the position of the dust discharge hole (22).
2. The device for removing mud from coarse aggregate in a dry production process according to claim 1, characterized in that: The sub-screening portion (3) is a screen hole arranged on the bottom wall of the inclined chute (2).
3. The device for removing mud from coarse aggregate in a dry production process according to claim 1, characterized in that: The sub-screening portion (3) is a window (21) arranged on the bottom wall of the inclined chute (2), and a screen plate or screen mesh installed at the window (21).
4. The device for removing mud from coarse aggregate in a dry production process according to claim 1, characterized in that: The piles (4) are provided in multiple rows and arranged in a plum blossom shape.
5. The device for removing mud from coarse aggregate in a dry production process according to claim 1 or 4, characterized in that: The height of the pile column (4) is not less than 1 / 3 of the internal height of the inclined chute (2).
6. A coarse aggregate desludging device in a dry production process according to claim 1, 2 or 3, characterized in that: A material guide trough (7) is installed on the lower side of the inclined chute (2) and at the screening portion (3).
7. The device for removing mud from coarse aggregate in a dry production process according to claim 1, characterized in that: A vibrator (6) is installed at the bottom of the inclined chute (2).
8. The device for removing mud from coarse aggregate in a dry production process according to claim 1, characterized in that: A connector (51) having a larger bottom and a smaller top is provided at the lower portion of the negative pressure air duct (5); the larger end of the connector (51) is connected to the dust exhaust hole (22), and the smaller end of the connector (51) is connected to the negative pressure air duct (5).
9. The device for removing mud from coarse aggregate in a dry production process according to claim 6, characterized in that: A material return tape machine (8) is provided below the material guide trough (7).