Device for detecting silt content of recycled aggregate

Abstract

The utility model relates to a recycled aggregate mud content detection device, which comprises a water flow conversion spray head, a screen, a screen clamp and an overturning driving device, the water flow conversion spray head is arranged at a water outlet of a water source device, the position of the water flow conversion spray head relative to the screen is movable, and the overturning driving device is arranged on the screen clamp. The screen comprises a screen surface and an annular edge part which is vertically connected with the outer edge of the screen surface, a plurality of mesh holes are uniformly formed in the screen surface, the water flow conversion spray head is located in the annular edge part when being arranged above the screen, and a water flow outlet is vertical to the screen surface; the screen mesh clamp is used for clamping and fixing the annular edge part, driving the screen mesh to vibrate and driving the screen mesh to rotate around a vertical line of the screen mesh; and the turnover driving device is connected with the screen clamp and is used for driving the screen clamp to turn over so as to drive the screen to turn over. The utility model has the beneficial effects that the detection result is more accurate, the cleaning efficiency is higher, and the mesh holes on the screen surface are not easy to block.

Description

Technical Field

[0001] The utility model relates to the technical field of sand and gravel mud content detection, and specifically designs a device for detecting the mud content of recycled aggregate. Background Art

[0002] At present, recycled aggregates are obtained by crushing and screening construction waste. Due to the different raw material compositions of construction waste and fluctuations in production conditions, the mud content of recycled aggregates is also different. In the production process of products (in concrete, inorganic binders, etc.), recycled aggregates with high mud content have a serious impact on the performance of the products, so it is necessary to test the mud content of recycled aggregates in the laboratory. The current detection method requires placing the aggregates on a 0.075mm sieve, washing with water to remove the fine powder and mud powder smaller than the 0.075mm sieve, and determining the mud content by the proportion of the washed powder. The current mud content detection equipment is often large in size, uses ultrasonic cleaning or is equipped with a stirring device, and some also come with drying and weighing equipment. For example, Chinese patent CN220794796U discloses a device for detecting the mud content of sand and gravel aggregates, which includes a hollow shell with a balance bracket provided on the top and an electronic balance fixed to the end of the balance bracket; it also includes an electric push rod vertically connected to the electronic balance, the bottom of the electric push rod is inserted into the hollow shell, and a screening box is fixed to the end; the hollow shell is divided into an upper cavity, a middle cavity and a lower cavity by an upper automatic door and a lower automatic door; the side wall of the lower cavity is provided with a sound wave emitting device immersed in the water body, and the bottom is connected to an external wastewater sedimentation tank; the side wall of the middle cavity is provided with a microwave heating device. The working principle of the above-mentioned prior art is: sand and gravel aggregates are loaded into the screening box according to the quartering method, the overall weight is weighed for the first time using an electronic balance, and then the screening box is lowered into the water body of the lower cavity by opening the upper automatic door and the lower automatic door and extending the electric push rod. At this time, the sound wave emitting device is started, and the sand and gravel aggregates in the screening box are vibrated and screened by the sound wave emitting device. After the screening is completed, the lower automatic door is opened and the electric push rod is retracted, the screening box is lifted into the middle cavity and the lower automatic door is closed, and the microwave heating device in the middle cavity is used to heat the screening box to discharge excess water in the sand and gravel aggregates, and the overall weight is weighed again. The difference in the two measured weights is the mud content.

[0003] The above-mentioned mud content detection device in the prior art has the following problems:

[0004] 1) The mud content test is determined by washing out the muddy water until it becomes clear, which takes a long time. At the same time, the screen is fine and easily clogged by mud, which also delays the progress of the test;

[0005] 2) The aforementioned mud content detection device vibrates and washes the sand and gravel aggregates in the sieve washing box through the sound wave emitting device, which has little effect on high-strength natural sand and gravel, but compared with ordinary mechanical vibration, the vibration frequency is high, the wavelength is short, and the energy is high, which may cause the crushing of sand powder, the loss of aggregates, and the high detection of mud content, especially for the detection device containing a stirring device, which has a greater impact on the detection results of the mud content of low-strength recycled aggregates. Content of the utility model

[0006] The utility model intends to provide a kind of recycled aggregate mud content detection device, to solve the deficiency existing in prior art, the technical problems to be solved by the utility model are realized by the following technical schemes.

[0007] A kind of recycled aggregate mud content detection device, including water flow conversion spray head, screen, screen fixture and turnover driving device, the water flow conversion spray head is installed at the water outlet of water source device, the position of the water flow conversion spray head is movable relative to the screen, the screen includes screen surface and the annular edge portion of the vertical connection of the outer edge of the screen surface, multiple mesh holes are uniformly provided on the screen surface, the water flow conversion spray head is located inside annular edge portion when being placed above the screen and water flow outlet is perpendicular to the screen surface, the screen fixture is used to clamp and fix annular edge portion, drive screen vibration and drive screen rotation about vertical line therein;The turnover driving device is connected with the screen fixture, for driving the screen fixture overturn, to drive the screen overturn.

[0008] Preferably, the water flow conversion spray head is fan-shaped and the water outlet is flat.

[0009] Preferably, the maximum size of the water outlet of the water flow conversion spray head is not less than the radius of the screen surface.

[0010] Preferably, the screen fixture includes vibrator, inner roller, outer roller and follow-up pulley, the turnover driving device is movably connected between the vibrator, the vibrator is provided with boss on the side upper end close to the screen, the inner roller and the outer roller are arranged side by side below the boss, the inner roller is located on the inner side of the annular edge portion, the outer roller is located on the outer side of the annular edge portion, and the inner roller and the outer roller are respectively closely attached to the annular edge portion, the follow-up pulley is arranged at the lower end of the vibrator and abuts against the bottom surface of the screen surface.

[0011] Preferably, the inner roller, outer roller and follow-up pulley are all coated with flexible coating layer.

[0012] Preferably, a fixing block is arranged between the turnover driving device and the screen clamp, the turnover driving device is fixedly connected with one side of the fixing block, and the screen clamp is movably connected with the other side of the fixing block.

[0013] Preferably, the turnover driving device is an electric machine or a turnover cylinder.

[0014] Preferably, the turnover angle of the turnover driving device is 110°-180°.

[0015] In the utility model, when the detection device is used, first, the water flow conversion spray head is installed at the water outlet of the water source device to change the flow rate and direction of the water flow, the turnover driving device is fixed on the detection platform, the screen is fixed through the screen clamp, the aggregate to be measured is placed on the screen, and the wastewater tank or other collecting device is placed below the screen. When the detection device works, the water source device is opened, the water flow is sprayed on the aggregate on the screen surface through the water flow conversion spray head, the screen is rotated through the screen clamp, so that the water flow is uniformly sprayed on all aggregates, and the aggregate is fully washed through the vibration of the screen clamp. When the aggregate on the screen surface needs to be collected after washing, the water flow conversion spray head is moved above the screen surface, the screen is turned over through the turnover driving device, the bottom surface of the screen surface faces upwards, then the water flow conversion spray head is placed above the screen, the screen surface is washed from the bottom, and the aggregate on the screen surface is easily and completely collected through the rotation of the screen clamp.

[0016] The vibration of the screen of the detection device is mechanical vibration, the destructiveness to the aggregate is smaller compared with ultrasonic vibration, and the detection result of the silt content is not obviously affected. The screen is continuously vibrated through the screen clamp, the aggregate is washed through the flowing water flow, the washing efficiency is high, the screen surface is not easily blocked through the vibration and water flow washing mode, the washing efficiency is also improved, the change from turbidity to clarity of the water flow under the screen is obvious, the turbidity after washing is not easily repeated, and the detection end point is obvious. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is another angle structural schematic view of the utility model;

[0019] The reference numerals in the drawings are as follows: 1, water flow conversion spray head, 2, screen, 21, mesh, 3, screen clamp, 31, vibrator, 32, inner roller, 33, outer roller, 34, follow-up pulley, 4, fixing block, 5, turnover driving device. DETAILED DESCRIPTION

[0020] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0021] The improved point of the device for detecting the clay content of recycled aggregate is that: it comprises a water flow conversion nozzle 1, a screen 2, a screen clamp 3 and a turnover driving device 5, the water flow conversion nozzle 1 is installed at the water outlet of a water source device, the position of the water flow conversion nozzle 1 relative to the screen 2 is movable, the screen 2 comprises a screen surface and a ring-shaped edge part which is vertically connected to the outer edge of the screen surface, a plurality of mesh holes 21 are uniformly arranged on the screen surface, the water flow conversion nozzle 1 is located inside the ring-shaped edge part when it is placed above the screen 2 and the water flow outlet is perpendicular to the screen surface, the screen clamp 3 is used for clamping and fixing the ring-shaped edge part, driving the screen 2 to vibrate and driving the screen 2 to rotate around the vertical line thereof; the turnover driving device 5 is connected with the screen clamp 3 and is used for driving the screen clamp 3 to turn over, thereby driving the screen 2 to turn over.

[0022] In the embodiment, when the detection device is used, first, the water flow conversion nozzle 1 is installed at the water outlet of the water source device to change the flow rate and direction of the water flow, the turnover driving device 5 is fixed on the detection platform, the screen 2 is fixed through the screen clamp 3, the aggregate to be measured is placed on the screen 2, and a wastewater tank or other collecting device is placed below the screen 2. When the detection device works, the water source device is opened, the water flow is sprayed on the aggregate on the screen surface through the water flow conversion nozzle 1, the screen 2 is driven to rotate through the screen clamp 3, so that the water flow is uniformly sprayed on all aggregates, at the same time, the screen 2 is driven to vibrate through the screen clamp 3, so that the aggregate is fully washed. When the aggregate on the screen surface needs to be collected after washing, first, the water flow conversion nozzle 1 is moved out above the screen surface, the screen 2 is turned over through the turnover driving device 5, so that the bottom surface of the screen surface faces upward, then the water flow conversion nozzle 1 is placed above the screen 2, the screen surface is washed from the bottom, at the same time, the screen 2 is driven to rotate through the screen clamp 3, so that the aggregate on the screen surface can be easily and completely collected.

[0023] In the embodiment, the vibration of the screen 2 is mechanical vibration, which has less damage to the aggregate and has no obvious influence on the detection result of the clay content compared with ultrasonic vibration; the screen 2 is continuously vibrated through the screen clamp 3 and the aggregate is washed through the flowing water flow, so that the washing efficiency is high, at the same time, the vibration and the water flow washing mode are not easy to cause the blockage of the mesh holes on the screen surface, so that the washing efficiency is also improved, the change from turbidity to clarity of the water flow under the screen is obvious, the turbidity after washing is not easy to appear repeatedly, and the detection endpoint is obvious.

[0024] Further, the water flow conversion nozzle 1 is fan-shaped and the water outlet is flat.

[0025] In the embodiment, the water flow conversion nozzle 1 is designed in such a shape that the washing area of the water outlet of the water flow conversion nozzle 1 is larger and the flow rate of the water flow is higher after the rotation of the screen, and the washing effect is better.

[0026] Further, the maximum size of the water outlet of the water flow conversion nozzle 1 is not less than the radius of the screen surface.

[0027] In the embodiment, the water flow surface can cover all the aggregates on the screen surface through the rotation of the screen 2.

[0028] Further, the screen clamp 3 comprises a vibrator 31, an inner roller 32, an outer roller 33 and a follower roller 34, the turnover driving device 5 is movably connected with the vibrator 31, the vibrator 31 is provided with a boss near the upper end of one side of the screen 2, the inner roller 32 and the outer roller 33 are arranged side by side below the boss, the inner roller 32 is located on the inner side of the annular edge, the outer roller 33 is located on the outer side of the annular edge, and the inner roller 32 and the outer roller 33 are respectively closely attached to the annular edge, and the follower roller 34 is arranged at the lower end of the vibrator 31 and abuts against the bottom surface of the screen surface.

[0029] In the embodiment, the inner roller 32 and the outer roller 33 are respectively located on the inner and outer sides of the annular edge and closely attached to the annular edge, so as to clamp and fix the screen 2, and the follower roller 34 is located at the bottom of the screen surface, which plays a supporting role for the screen 2 and can rotate with the rotation of the screen 2. When the screen clamp 3 drives the screen 2 to vibrate, the vibrator 31 is started, and the inner roller 32, the outer roller 33, the follower roller 34 and the screen 2 are vibrated together through the vibrator 31, the vibrator 31 is movably connected with the turnover driving device 5, and the vibration of the vibrator 31 does not drive the vibration of the turnover driving device 5. When the screen clamp 3 drives the screen 2 to rotate around the median line of the screen surface, the inner roller 32 and the outer roller 33 are first controlled to rotate around their own axes, the rotation directions of the inner roller 32 and the outer roller 33 are opposite, and the inner roller 32 and the outer roller 33 are closely attached to the annular edge, so that the screen 2 is driven to rotate under the friction force of the inner roller 32 and the outer roller 33, and at the same time, the follower roller 34 at the bottom of the screen surface rotates around its own axis, so that the friction between the follower roller 34 and the bottom of the screen surface is rolling friction, and the rotation of the screen 2 is more stable and smooth.

[0030] Further, the outer parts of the inner roller 32, the outer roller 33 and the follower roller 34 are covered with a flexible coating layer.

[0031] In the embodiment, the inner rollers 32 and the outer rollers 33 are externally covered with flexible coating layers, which can reduce the abrasion of the annular edge caused by the inner rollers and the outer rollers, and increase the friction between the inner rollers, the outer rollers and the annular edge, so that the annular edge is easier to rotate; the outer part of the follow-up roller 34 is covered with a flexible coating layer, which can reduce the abrasion between the follow-up roller 34 and the screen surface, and make the rotation of the screen 2 more stable.

[0032] Further, the material of the flexible coating layer is rubber or EVA foam.

[0033] Further, the screen clamp 3 is movably connected to the other side of the fixed block 4.

[0034] Further, the turnover driving device 5 is a motor or a turnover air cylinder.

[0035] Further, the turnover angle of the turnover driving device 5 is 110°-180°.

[0036] It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0037] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments described herein. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise. In addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they refer to the presence of a feature, step, operation, device, component and / or combinations thereof.

[0038] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the terms used in this way can be interchanged as appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0039] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to the process, method, product or device.

[0040] For purposes of the description hereinafter, spatial

[0041] In the detailed description above, reference is made to the accompanying drawings, which form a part hereof. In the drawings, similar symbols typically identify similar components, unless context dictates otherwise. The illustrative embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments can be used, and other changes can be made, without departing from the spirit or scope of the subject matter presented herein.

[0042] The above only is the preferred embodiment of the present application, and is not used to limit the present application, for those skilled in the art, the present application can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for detecting mud content in recycled aggregate, characterized in that: The invention comprises a water flow conversion nozzle (1), a screen (2), a screen clamp (3) and a flip driving device (5), wherein the water flow conversion nozzle (1) is installed at the water outlet of a water source device, and the position of the water flow conversion nozzle (1) relative to the screen (2) is movable, the screen (2) comprises a screen surface and an annular edge perpendicularly connected to the outer edge of the screen surface, a plurality of mesh holes (21) are evenly arranged on the screen surface, the water flow conversion nozzle (1) is located inside the annular edge when placed above the screen (2), and the water flow outlet is perpendicular to the screen surface, the screen clamp (3) is used to clamp and fix the annular edge, drive the screen (2) to vibrate, and drive the screen (2) to rotate around its vertical line; the flip driving device (5) is connected to the screen clamp (3) and is used to drive the screen clamp (3) to flip, thereby driving the screen (2) to flip.

2. A device for detecting mud content in recycled aggregate according to claim 1, characterized in that: The water flow conversion nozzle (1) is fan-shaped and the water outlet is flat.

3. The device for detecting mud content in recycled aggregate according to claim 1, characterized in that: The maximum size of the water outlet of the water flow conversion nozzle (1) is not less than the radius of the screen surface.

4. The device for detecting mud content in recycled aggregate according to claim 1, characterized in that: The screen clamp (3) includes a vibrator (31), an inner roller (32), an outer roller (33) and a follower pulley (34); the flip driving device (5) is movably connected to the vibrator (31); a boss is provided on the upper end of the vibrator (31) close to the screen (2); the inner roller (32) and the outer roller (33) are arranged side by side below the boss; the inner roller (32) is located on the inner side of the annular edge; the outer roller (33) is located on the outer side of the annular edge; and the inner roller (32) and the outer roller (33) are respectively tightly fitted with the annular edge; the follower pulley (34) is arranged at the lower end of the vibrator (31) and abuts against the bottom surface of the screen surface.

5. The device for detecting mud content in recycled aggregate according to claim 4, characterized in that: The outer portions of the inner roller (32), the outer roller (33) and the follower pulley (34) are all covered with a flexible covering layer.

6. The device for detecting mud content in recycled aggregate according to claim 1, characterized in that: A fixed block (4) is provided between the flip drive device (5) and the screen clamp (3); the flip drive device (5) is fixedly connected to one side of the fixed block (4); and the screen clamp (3) is movably connected to the other side of the fixed block (4).

7. The device for detecting mud content in recycled aggregate according to claim 1, characterized in that: The turning drive device (5) is a motor or a turning cylinder.

8. The device for detecting mud content in recycled aggregate according to claim 1, characterized in that: The turning angle of the turning drive device (5) is 110° to 180°.

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