A device for recovering fine sand from sand plant wastewater

Abstract

The utility model discloses a sandstone plant wastewater fine sand recovery device, including vibrating screen, and the water collecting groove of setting in vibrating screen below, vibrating screen one end is open, the other end is closed, and the water-containing fine sand of cyclone discharge falls into vibrating screen, and falls into position is close to the closed end of vibrating screen, and the water collecting groove is fixed with ground, still include elastic support spare, elastic support spare is provided with a plurality, a plurality of elastic support spare install between vibrating screen and water collecting groove, and the support height of every elastic support spare is independently adjustable, the active cleaning device is through water collecting groove sliding installation to the screen cloth of vibrating screen is actively cleaned, and this device can realize high pressure reverse flushing, realizes the screen hole dredging.

Description

Technical Field

[0001] This utility model relates to a fine sand recovery device for wastewater from a sand and gravel plant. Background Technology

[0002] In the field of sand and gravel aggregate production and mineral processing, wet production processes generate a large amount of wastewater containing fine particulate materials that can be recycled. Hydrocyclones are often used as preliminary thickening and classification equipment, and the water-containing fine sand mixture discharged from the underflow needs to enter a high-frequency vibrating screen for dewatering, desliming, and recycling.

[0003] In existing technologies, vibrating screens are typically fixed at a certain angle. When processing cohesive or fine sand with particle sizes close to the screen openings, the screen mesh is prone to clogging, leading to a sharp drop in screening efficiency and a decrease in recovery rate. Traditional cleaning methods often involve manual cleaning after the machine is shut down, which is not only labor-intensive and poses safety hazards, but also seriously affects production efficiency.

[0004] Based on the above problems, we designed a fine sand recovery device for wastewater from sand and gravel plants that can achieve high-pressure reverse flushing and clear the screen holes. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a fine sand recovery device for wastewater from sand and gravel plants that can achieve high-pressure reverse flushing and clear the screen holes.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] A fine sand recovery device for wastewater from a sand and gravel plant includes a vibrating screen and a water receiving trough disposed below the vibrating screen. One end of the vibrating screen is open, and the other end is closed. Moisturized fine sand discharged through a hydrocyclone falls onto the vibrating screen, with the falling position close to the closed end of the screen. The water receiving trough is fixed to the ground. The device also includes…

[0008] The elastic support is provided in multiple parts, which are installed between the vibrating screen and the water receiving tank, and the support height of each elastic support is independently adjustable.

[0009] An active cleaning device is slidably installed through the water receiving tank and actively cleans the screen of the vibrating screen.

[0010] Preferably, the elastic support includes a cylinder, an adjusting screw, a sliding base, a limiting cap, and a spring. The sliding base is axially slidably installed inside the cylinder. The limiting cap is detachably installed on the top of the cylinder and limits the upward movement of the sliding base. The lower end of the spring is fixed to the sliding base, and the upper end of the spring extends to the outside of the limiting cap and is fixed to the bottom of the vibrating screen. The adjusting screw is screwed in from the axis at the bottom of the cylinder, and the upper end of the adjusting screw is inserted into the sliding base. The cylinder is fixed to the water receiving trough.

[0011] Preferably, the upper end of the adjusting screw is a smooth rod portion, and the bottom of the sliding base is provided with a recessed hole, with the smooth rod portion and the recessed hole having a clearance fit.

[0012] Preferably, the active cleaning device includes a geared motor, a screw, a threaded sleeve, a limit switch, a spray plate, and a nozzle. A lateral groove is provided on the side wall of the water receiving tank. Side support plates are installed at both ends of the lateral groove on the outer wall of the water receiving tank. The screw is rotatably mounted between the side support plates at both ends via bearings. The geared motor is fixed to one side of the side support plate via a flange and connected to drive the screw. The spray plate is inserted into the water receiving tank from the lateral groove and slides laterally along the lateral groove. Both ends of the spray plate are closed. The end of the spray plate outside the water receiving tank is fixed to the threaded sleeve. The nozzle... Multiple spray nozzles are fixed to the top of the spray plate, spraying water towards the vibrating screen. A water inlet pipe is fixed to the top of the spray plate, outside the water receiving tank. The water inlet pipe is connected to the booster pump via a high-pressure hose. Two limit switches are provided on the left and right sides, respectively installed on the opposite surfaces of the side support plates. A trigger plate is fixed to the outer wall of the threaded sleeve. The limit switches are triggered by the trigger plate. The geared motor is connected to a motor controller. The limit switches are connected to the motor controller so that when the trigger plate triggers the limit switch, a signal is sent to the motor controller, and the motor controller stops the operation of the geared motor.

[0013] Preferably, ear plates are provided on both the left and right sides of the spray plate, with two or more ear plates on each side. An installation rod is provided above the multiple ear plates on the same side, and an insertion rod is provided at the bottom of the installation rod. The insertion rod passes through the ear plate and is fitted with a nut. A second spring is provided on the insertion rod, and the second spring acts between the installation rod and the ear plate. The top of the installation rod is evenly distributed with implantation holes, through which brush bristles are inserted, and the brush bristles act on the bottom of the vibrating screen.

[0014] Preferably, a baffle plate is provided at the position of the spray plate near the chute.

[0015] The beneficial effects of this utility model are:

[0016] By incorporating multiple independently adjustable elastic supports, operators can precisely control the height of each support point by simply rotating the adjusting screws, thereby flexibly changing the overall tilt angle of the vibrating screen. This adjustment method requires no shutdown or disassembly of the equipment, can quickly adapt to the screening process requirements of different materials, optimizes screening efficiency, and features a simple, reliable structure that is easy to maintain.

[0017] The integrated active cleaning device can operate after screening (or when needed), combining high-pressure water jet flushing and physical brush cleaning. The high-pressure water jet flushes from bottom to top in reverse, effectively removing particles clogging the screen holes, while the brush bristles, under the pressure of a second spring, closely adhere to the bottom of the screen for deep scraping. This dual action ensures thorough cleaning and fundamentally solves the problem of screen clogging. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is the front view of the device;

[0020] Figure 2 This is a top view of the device;

[0021] Figure 3 This is a cross-sectional view of the elastic support component;

[0022] Figure 4 This is a schematic diagram of the active cleaning device.

[0023] Figure 5 This is a sectional view at point AA. Detailed Implementation

[0024] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0025] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0026] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, in the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] See Figure 1 and Figure 2 The illustrated device for recovering fine sand from wastewater in a sand and gravel plant includes a vibrating screen 1 and a water receiving trough 2 located below the vibrating screen 1. One end of the vibrating screen 1 is open, and the other end is closed. Water-containing fine sand discharged through a hydrocyclone falls onto the vibrating screen 1, landing near the closed end. The water receiving trough 2 is fixed to the ground. The device also includes…

[0030] Elastic support 3, multiple elastic support 3 are provided, multiple elastic support 3 are installed between the vibrating screen 1 and the water receiving tank 2, and the support height of each elastic support 3 is independently adjustable to adjust the tilt angle of the vibrating screen 1 as needed;

[0031] An active cleaning device 4 is slidably installed via the water receiving tank 2 and actively cleans the screen 11 of the vibrating screen 1. When not being cleaned, the active cleaning device 4 avoids the screen of the vibrating screen 1 so that water filtered through the screen does not fall onto the active cleaning device 4.

[0032] See Figure 1 and Figure 3As shown, the elastic support 3 includes a cylinder 31, an adjusting screw 32, a sliding base 33, a limiting cap 34, and a spring 35. The sliding base 33 is axially slidably installed inside the cylinder 31. The limiting cap 34 is detachably installed on the top of the cylinder 31 and limits the upward movement of the sliding base 33. The lower end of the spring 35 is fixed to the sliding base 33, and the upper end of the spring 35 extends to the outside of the limiting cap 34 and is fixed to the bottom of the vibrating screen 1. The adjusting screw 32 is screwed in from the axis at the bottom of the cylinder 31, and the upper end of the adjusting screw 32 is inserted into the sliding base 33. The cylinder 31 is fixed to the water receiving tank 2.

[0033] In the above technical solution, by adjusting the height of the adjusting screw 32, the height of the upper end of the spring 35 is changed, thereby realizing the angle adjustment of the vibrating screen.

[0034] When the adjusting screw 32 is rotated, the sliding base 33 is displaced along the axial direction of the cylinder 31.

[0035] The lower end of the spring 35 is welded and fixed to the sliding base 33, and the upper end of the spring 35 is welded and fixed to the vibrating screen 1.

[0036] See Figure 3 As shown, the upper end of the adjusting screw 32 is the smooth rod part, and the bottom of the sliding base 33 is provided with a recessed hole 331, with the smooth rod part and the recessed hole 331 in clearance fit.

[0037] The above design is adopted to facilitate the rotation of the adjusting screw 32.

[0038] See Figure 2 and Figure 4As shown, the active cleaning device 4 includes a geared motor 41, a screw 42, a threaded sleeve 43, a limit switch 44, a spray plate 45, and a nozzle 46. A chute (not shown) is laterally arranged on the side wall of the water receiving tank 2. Side support plates 221 are installed at both ends of the chute on the outer wall of the water receiving tank 2. The screw 42 is rotatably mounted between the side support plates 221 at both ends via bearings. The geared motor 41 is fixed to one side of the side support plate 221 via a flange and connects to drive the screw 42. The spray plate 45 is inserted into the water receiving tank 2 from the chute and slides laterally along the chute. Both ends of the spray plate 45 are closed. The end of the spray plate 45 located outside the water receiving tank 2 is fixed to the threaded sleeve 43. The spray nozzles 46 are fixed with bolts. Multiple nozzles 46 are fixed to the top of the spray plate 45. The nozzles spray water towards the vibrating screen 1. A water inlet pipe 450 is fixed to the top of the spray plate 45, located outside the water receiving tank 2. Two limit switches 44 are provided on the left and right sides, respectively installed on the opposite surfaces of the side support plates 221 on both sides. A trigger plate 431 is fixed to the outer wall of the threaded sleeve 43. The limit switches 44 are triggered by the trigger plate 431. The geared motor 41 is connected to a motor controller (not shown). The limit switches 44 are connected to the motor controller so that when the trigger plate triggers the limit switch, a signal is sent to the motor controller, and the motor controller stops the operation of the geared motor 41.

[0039] In the above technical solution, when the spray plate 45 slides to the left to the limit position, it disengages from the lower part of the screen 11 to avoid the water screened out acting on the spray plate 45 during the vibrating screening.

[0040] The spray plate 45 will only move below the screen 11 when the screening process is completed and the screen 11 needs to be cleaned.

[0041] In the above technical solution, the water inlet pipe 450 is connected to a booster device (the booster device is a booster pump) through a high-pressure hose, so that high-pressure water is sprayed upward through the nozzle 46 onto the bottom of the screen 11, which washes away the fine sand particles blocking the screen holes and loosens them, so as to clear the screen 11.

[0042] During the cleaning process, the vibrating screen is kept running so that the cleaned particles are discharged under the continuous vibration of the screen.

[0043] See Figure 5As shown, ear plates 451 are provided on both the left and right sides of the spray plate 45, with two or more ear plates 451 on each side. An installation rod 452 is provided above the multiple ear plates 451 on the same side. An insertion rod 453 is provided at the bottom of the installation rod 452. The insertion rod 453 passes through the ear plate 451 and is fitted with a nut 454. A second spring 455 is provided on the insertion rod 453. The second spring 455 acts between the installation rod 452 and the ear plate 451. The top of the installation rod is evenly distributed with implantation holes. Brush bristles 456 are inserted through the implantation holes and act on the bottom of the vibrating screen.

[0044] In the above technical solution, an additional cleaning method is provided, in which the bristles 456 are metal bristles, and the screen is physically cleaned by the bristles 456.

[0045] See Figure 4 As shown, a baffle plate 457 is provided at the position of the spray plate 45 near the chute.

[0046] The design of the baffle plate 457 can prevent water from flowing out through the channel along the surface of the spray plate 45 during rinsing.

[0047] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0048] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0049] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0050] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0051] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0052] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fine sand recovery device for wastewater from a sand and gravel plant, comprising a vibrating screen and a water receiving trough disposed below the vibrating screen, wherein one end of the vibrating screen is open and the other end is closed, and the water-containing fine sand discharged through a hydrocyclone falls onto the vibrating screen, with the falling position close to the closed end of the vibrating screen, and the water receiving trough is fixed to the ground, characterized in that: It also includes, The elastic support is provided in multiple parts, which are installed between the vibrating screen and the water receiving tank, and the support height of each elastic support is independently adjustable. An active cleaning device is slidably installed through the water receiving tank and actively cleans the screen of the vibrating screen.

2. The fine sand recovery device for wastewater from sand and gravel plants according to claim 1, characterized in that: The elastic support includes a cylinder, an adjusting screw, a sliding base, a limiting cap, and a spring. The sliding base is axially slidably installed inside the cylinder. The limiting cap is detachably installed on the top of the cylinder and limits the upward movement of the sliding base. The lower end of the spring is fixed to the sliding base, and the upper end of the spring extends to the outside of the limiting cap and is fixed to the bottom of the vibrating screen. The adjusting screw is screwed in from the axis at the bottom of the cylinder, and the upper end of the adjusting screw is inserted into the sliding base. The cylinder is fixed to the water receiving tank.

3. The fine sand recovery device for wastewater from sand and gravel plants according to claim 2, characterized in that: The upper end of the adjusting screw is the smooth rod part, and the bottom of the sliding base is provided with a recessed hole, with the smooth rod part fitting into the recessed hole with clearance.

4. The fine sand recovery device for wastewater from sand and gravel plants according to claim 1, characterized in that: The active cleaning device includes a geared motor, a screw, a threaded sleeve, a limit switch, a spray plate, and a nozzle. A chute is laterally arranged on the side wall of the water receiving trough. Side support plates are installed at both ends of the chute on the outer wall of the water receiving trough. The screw is rotatably mounted between the side support plates at both ends via bearings. The geared motor is fixed to one side support plate via a flange and connected to drive the screw. The spray plate is inserted into the water receiving trough from the chute and slides laterally along the chute. Both ends of the spray plate are closed. The end of the spray plate outside the water receiving trough is fixed to the threaded sleeve. Multiple nozzles are provided, all fixed to the top of the spray plate. The nozzles spray water towards the vibrating screen. A water inlet pipe is fixed to the top of the spray plate, located outside the water receiving tank. Two limit switches are provided on the left and right sides, respectively installed on the opposite surfaces of the side support plates on both sides. A trigger plate is fixed to the outer wall of the threaded sleeve. The limit switches are triggered by the trigger plate. The geared motor is connected to a motor controller. The limit switches are connected to the motor controller so that when the trigger plate triggers the limit switches, a signal is sent to the motor controller, and the motor controller stops the operation of the geared motor.

5. The fine sand recovery device for wastewater from sand and gravel plants according to claim 4, characterized in that: Ear plates are provided on both the left and right sides of the spray plate, with two or more ear plates on each side. An installation rod is provided above the multiple ear plates on the same side. An insertion rod is provided at the bottom of the installation rod. The insertion rod passes through the ear plate and is fitted with a nut. A second spring is provided on the insertion rod. The second spring acts between the installation rod and the ear plate. The top of the installation rod is evenly distributed with insertion holes. Brush bristles are inserted through the insertion holes and act on the bottom of the vibrating screen.

6. The fine sand recovery device for wastewater from sand and gravel plants according to claim 4, characterized in that: A baffle plate is provided at the position of the spray plate near the chute.

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