A device for detecting the clay content of artificial sand

Abstract

The utility model relates to artificial sand mud content detection technical field, and disclose a kind of artificial sand mud content detection device, including machine body, and for containing sand sample beaker, still include: rotation connection on the stirring shaft of machine body, hollow formation water inlet channel in stirring shaft inside, the side wall of bottom is equipped with the water outlet hole of intercommunication water inlet channel;Lifting connection on the base of machine body, for driving beaker to stirring shaft close or away;At least one water suction pipe, fixedly connected on the machine body, water suction pipe bottom extends into beaker, and water suction pipe water inlet end detachably connected with filter screen, filter screen is located in the side of water outlet hole;The utility model is through lifting base to facilitate beaker to dismount, hollow stirring shaft water injection cooperation side filter screen, utilize water flow scouring anti-blocking, ensure that drainage is smooth, and integrated water supply and water suction component realize automatic elutriation, replace manual operation, significantly improve detection efficiency and result accuracy, satisfy large quantities engineering detection demand.

Description

Technical Field

[0001] This utility model relates to the field of artificial sand mud content detection technology, specifically an artificial sand mud content detection device. Background Technology

[0002] Artificial sand refers to rock particles with a diameter of less than 4.75mm, produced by mechanical crushing and screening after soil removal. With the increasing depletion of natural river sand resources and the strengthening of environmental protection efforts, artificial sand has become an indispensable raw material in concrete and mortar engineering. However, during the production process (such as crushing and pulverizing), artificial sand inevitably mixes with impurities such as mud and stone powder. Mud content (i.e., the content of particles with a diameter of less than 0.075mm in the sand) is one of the key indicators for evaluating the quality of artificial sand. Excessive mud content will not only significantly increase the water demand of concrete, leading to poor workability, but also weaken the bonding force between cement paste and aggregate, thereby reducing the strength and durability of concrete, and even causing serious engineering quality problems such as cracking. Therefore, accurate and efficient detection of the mud content of artificial sand is crucial for ensuring the quality of construction projects.

[0003] Currently, the detection of mud content in manufactured sand mainly relies on the national standard "Construction Sand" (GB / T 14684) or the industry standard "Test Procedure for Aggregates in Highway Engineering" (JTG E42), both of which use the water washing method as their core principle. According to the current standards, the specific workflow of the existing water washing method mainly includes the following steps: drying and weighing: the reduced manufactured sand sample is placed in an oven and dried to constant weight. After cooling, approximately 500g (m0) is weighed as the sample; soaking and washing: the sample is placed in a container, clean water is added, with the water level approximately 150mm above the sand surface, and after thorough mixing, it is soaked for 2 hours. Subsequently, the sample is washed by hand in water to separate dust, silt, and clay from the sand particles, suspending them in the water; Drainage: The turbid liquid needs to be slowly poured onto a sieve with 1.18mm and 0.075mm diameters to filter out particles smaller than 0.075mm; Repeat washing: Refill the container with clean water and repeat the above "stirring-sedimentation-drainage" process. This process usually needs to be repeated more than 5 times until the water in the container is visually clear; Drying and reweighing: Wash all the remaining sand particles on the sieve back into the container, dry it again to constant weight, cool it, and weigh it (m1); Calculation result: Calculate the mud content using the formula (m0−m1) / m0×100%.

[0004] However, existing soaking and washing methods rely heavily on manual operation, which not only has poor reproducibility, but also requires repeated water injection, stirring (letting it settle), and careful drainage for each test, which usually takes more than 30 minutes. Faced with the large number of engineering testing needs, manual operation is inadequate and cannot meet the fast-paced construction schedule. Utility Model Content

[0005] This invention provides a device for detecting the mud content of artificial sand. By setting up a stirring shaft with an internal water inlet channel and a water pumping pipe, it can realize the cycle of water injection, stirring, sedimentation and drainage without repeated manual operation, thus solving the problems of poor reproducibility and long time consumption mentioned in the background art.

[0006] This utility model provides the following technical solution:

[0007] A device for detecting the mud content of artificial sand includes a body and a beaker for holding a sand sample. It also includes: a stirring shaft rotatably connected to the body, wherein the body has a drive unit for driving the stirring shaft to rotate, the stirring shaft has a hollow interior forming a water inlet channel, and a water outlet hole connected to the water inlet channel is opened on the side wall near the bottom. The body has a water supply unit connected to the water inlet channel for injecting water into the beaker; a base lifted and lowered connected to the body, on which the beaker is placed to drive the beaker closer to or further away from the stirring shaft; at least one water suction pipe fixedly connected to the body, the bottom of the water suction pipe extending into the beaker, and a filter screen detachably connected to the water inlet end of the water suction pipe, the filter screen being located to the side of the water outlet hole; and a water suction assembly connected to the water suction pipe within the body.

[0008] As a preferred technical solution of this utility model, the water supply unit includes a water inlet pipe fixedly connected to the outside of the machine body. The water inlet pipe is connected to the water inlet channel through a first pipe, and a solenoid valve and a flow meter are installed on the first pipe.

[0009] As a preferred technical solution of this utility model, the drive unit includes a first motor installed in the machine body, a mounting base rotatably connected in the machine body, a square shaft fixedly connected to the top of the stirring shaft, the square shaft engaging with the mounting base, and a first gear fixedly connected to the mounting base. A second gear meshing with the first gear is fixedly connected to the output end of the first motor.

[0010] As a preferred technical solution of this utility model, a fixed cylinder is fixedly connected inside the machine body, the housing of the first motor is fixedly installed on the side wall of the fixed cylinder, and a top cover is threadedly connected to the top of the fixed cylinder. One end of the square shaft extending into the fixed cylinder abuts against the bottom of the top cover. A tube communicating with the water inlet channel is fixedly connected to the bottom of the top cover. A sealing ring is provided between the inner wall of the water inlet channel and the outer wall of the tube. The end of the first pipe away from the water inlet pipe is connected to the tube.

[0011] As a preferred embodiment of this utility model, the bottom end of the stirring shaft is detachably connected to a stirring blade, the stirring blade is paddle-shaped, and the water outlet is located on the side wall of the stirring shaft above the stirring blade.

[0012] As a preferred technical solution of this utility model, the water pumping assembly includes a water pump fixedly connected to the body, a drain pipe fixedly connected to the outside of the body, one end of the water pump being connected to the drain pipe, and the other end of the water pump being connected to the water pumping pipe through a second pipe.

[0013] As a preferred technical solution of this utility model, the side wall of the machine body is provided with a guide groove, a lead screw is rotatably connected in the guide groove, one end of the base extends into the guide groove and is threadedly connected to the lead screw, and a second motor for driving the lead screw to rotate is provided in the machine body.

[0014] As a preferred technical solution of this utility model, a bottom pad is fixedly connected to the base, a placement groove is opened on the top of the bottom pad, the bottom of the beaker is located in the placement groove, and a sealing gasket is fixedly connected to the body, with the end face of the beaker mouth abutting against the sealing gasket.

[0015] As a preferred technical solution of this utility model, the front of the machine body is provided with a control panel and a display screen for centralized control of the device's lifting, stirring, water injection and drainage.

[0016] As a preferred embodiment of this utility model, the pore size of the filter screen is less than or equal to 0.075 mm.

[0017] Compared with the prior art, this utility model provides a device for detecting the mud content of artificial sand, which has the following beneficial effects:

[0018] 1. The sand washing device for detecting mud content in artificial sand is equipped with a stirring shaft with an internal water inlet channel and a water pumping pipe, which can realize the cycle of water injection, stirring, sedimentation and drainage without repeated manual operation.

[0019] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model facilitates the loading and unloading of beakers through the lifting base, and the hollow stirring shaft is filled with water in conjunction with the side filter screen. The water flow is used to flush and prevent clogging, ensuring smooth drainage. Moreover, the integrated water supply and pumping components enable automatic washing, replacing manual operation, significantly improving testing efficiency and result accuracy, and meeting the needs of large-scale engineering testing. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0021] Figure 1 This is a first-person perspective perspective view of the present invention.

[0022] Figure 2 This is a second-view perspective perspective view of the present invention;

[0023] Figure 3 This is a partial cross-sectional view of the present invention;

[0024] Figure 4 This utility model Figure 3 A schematic diagram of part A.

[0025] In the diagram: 1. Body; 101. Inlet pipe; 102. Drain pipe; 103. Sealing gasket; 2. Stirring shaft; 201. Stirring blade; 202. Water outlet; 3. Pumping pipe; 301. Filter screen; 302. Water pump; 4. Beaker; 5. Base; 501. Bottom pad; 6. Mounting base; 601. First gear; 602. First motor; 603. Second gear; 7. Fixing cylinder; 8. Top cover; 801. Insert pipe. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 1-4 A device for detecting the mud content of artificial sand includes a body 1 and a beaker 4 for holding sand samples. A stirring shaft 2 is rotatably connected to the body 1. A drive unit for driving the stirring shaft 2 to rotate is provided inside the body 1. The stirring shaft 2 is hollow inside to form a water inlet channel. A water outlet 202 connected to the water inlet channel is opened on the side wall near the bottom. A water supply unit connected to the water inlet channel is provided on the body 1 for accurately injecting water into the beaker 4. A base 5 is also connected to the body 1 for lifting. The beaker 4 is placed on the base 5. The lifting movement of the base 5 drives the beaker 4 to move closer to or away from the stirring shaft 2 to achieve docking and separation of the working position. A control panel and a display screen are provided on the front of the body 1. The operator can centrally control the device's lifting, stirring, water injection and drainage and other fully automated operations through the control panel. The display screen displays parameters such as the current process status, water injection volume and stirring time in real time.

[0028] Furthermore, at least one water suction pipe 3 is fixedly connected to the body 1. Preferably, three pipes are evenly arranged in a circle. The bottom of each of the three water suction pipes 3 extends into the beaker 4, and a filter screen 301 is detachably connected to the water inlet end of each pipe. The shell of the filter screen 301 is threadedly connected to the outer wall of the water inlet end of the water suction pipe 3. By setting three water suction pipes 3, the drainage speed can be accelerated. Furthermore, even if the filter screen 301 on one of the water suction pipes 3 is blocked, the remaining two pipes can still work, thereby achieving continuous drainage and reducing the number of manual maintenance operations. In addition, the height of the filter screen 301 is located to the side of the water outlet 202. A water pumping component connected to the water pumping pipe 3 is provided inside the body 1 to pump out the turbid water after cleaning. In specific implementation, the water supply unit includes a water inlet pipe 101 fixedly connected to the outside of the body 1. The water inlet pipe 101 is connected to the water inlet channel at the top of the stirring shaft 2 through the first pipe. Moreover, a solenoid valve and a flow meter are installed on the first pipe in sequence. After the water injection volume is set through the control panel, the solenoid valve opens and the flow meter provides real-time feedback of flow data. When the preset value is reached, the valve automatically closes to achieve quantitative water injection.

[0029] In addition, the drive unit includes a first motor 602 installed inside the body 1. A mounting base 6 is rotatably connected inside the body 1. A square shaft is fixedly connected to the top of the stirring shaft 2. The square shaft is engaged with the mounting base 6, so that when the mounting base 6 rotates, it can synchronously drive the stirring shaft 2 to rotate. At the same time, it allows the stirring shaft 2 to have a certain amount of axial movement to accommodate assembly tolerances. A first gear 601 is fixedly connected to the mounting base 6. A second gear 603 that meshes with the first gear 601 is fixedly connected to the output end of the first motor 602. Power is smoothly transmitted to the stirring shaft 2 through gear transmission.

[0030] To ensure the reliable position of the stirring shaft 2 and facilitate assembly and disassembly, a fixed cylinder 7 is fixedly connected inside the machine body 1. The housing of the first motor 602 is fixedly installed to the side wall of the fixed cylinder 7 by bolts. A top cover 8 is threadedly connected to the top of the fixed cylinder 7. One end of the square shaft at the top of the stirring shaft 2 extends into the fixed cylinder 7 and abuts against the bottom of the top cover 8, which serves as an axial limit. A pipe 801 connected to the water inlet channel is fixedly connected to the bottom of the top cover 8. A sealing ring is provided between the inner wall of the water inlet channel and the outer wall of the pipe 801 to prevent high-pressure water leakage. The end of the first pipe away from the water inlet pipe 101 is connected to the pipe 801, thereby constructing a dynamic sealed water supply path from the external water source to the interior of the rotating stirring shaft 2. In addition, the external water source is preferably filtered tap water.

[0031] A stirring blade 201 is detachably connected to the bottom end of the stirring shaft 2. Here, the stirring blade 201 is preferably threaded to the bottom of the stirring shaft 2. The stirring blade 201 is paddle-shaped, which is convenient for disassembly, replacement or cleaning. Moreover, the water outlet 202 is located on the side wall of the stirring shaft 2 above the stirring blade 201. This layout makes the water injection point located in the core area of ​​the stirring flow field. After the water is sprayed out, it can be quickly dispersed by the blade and rolled into the sand sample, thereby improving the washing efficiency.

[0032] The water pumping assembly includes a water pump 302 fixedly connected inside the body 1. A drain pipe 102 is fixedly connected to the outside of the body 1. One end of the water pump 302 is connected to the drain pipe 102, and the other end is connected to the water pumping pipe 3 through a second pipe. When the cleaning is finished and drainage is required, the water pump 302 is started. The turbid water is filtered by the filter screen 301 and then sucked in by the water pumping pipe 3 and discharged through the drain pipe 102.

[0033] The lifting and lowering movement of the base 5 is achieved through a lead screw drive. Specifically, a guide groove is provided on the side wall of the machine body 1, and the lead screw is rotatably connected in the guide groove. One end of the base 5 extending into the guide groove is threadedly connected to the lead screw. Moreover, a second motor is provided inside the machine body 1 to drive the lead screw to rotate. The forward and reverse rotation of the second motor can precisely control the lifting and lowering position of the base 5 and the beaker 4. In addition, in order to ensure the sealing and stability of the beaker 4 in the working position, a bottom pad 501 is fixedly connected to the base 5. The top of the bottom pad 501 has a placement groove that matches the shape of the bottom of the beaker 4 to prevent the beaker 4 from sliding. At the same time, a sealing gasket 103 is fixedly connected to the machine body 1. When the base 5 rises to the working position, the end face of the mouth of the beaker 4 is tightly abutted against the sealing gasket 103 to form a closed cavity, preventing water splashing or dust overflow during the stirring process.

[0034] The pore size of filter screen 301 is less than or equal to 0.075 mm, preferably 0.075 mm, which strictly corresponds to the particle size definition of mud content in the national standard. This ensures that only mud powder particles smaller than 0.075 mm are discharged with the water, while effective sand particles are retained in beaker 4. Since filter screen 301 is located to the side of water outlet 202, during water injection and stirring, the high-speed water flow sprayed from water outlet 202 will continuously wash the surface of filter screen 301 facing stirring shaft 2, effectively preventing fine mud from accumulating and clogging on the surface of filter screen 301, ensuring smooth drainage and stable flow, thereby significantly improving the accuracy of test data and the reliability of equipment operation. After changing the water several times until the water in beaker 4 is visually clear, beaker 4 is removed. At the same time, all the sand and gravel remaining on the surface of stirring shaft 2, water pipe 3, filter screen 301 and stirring blade 201 are swept into beaker 4, dried again to constant weight, cooled and weighed. The mud content can be calculated by comparing the weight before cleaning with the weight using a formula.

[0035] Components not described in detail in this article are existing technologies.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for detecting the mud content of artificial sand, comprising a body (1) and a beaker (4) for holding a sand sample, characterized in that, Also includes: Rotate the stirring shaft (2) connected to the machine body (1). The machine body (1) is equipped with a drive unit for driving the stirring shaft (2) to rotate. The stirring shaft (2) is hollow inside to form a water inlet channel. A water outlet (202) is opened on the side wall near the bottom to connect with the water inlet channel. The machine body (1) is equipped with a water supply unit connected with the water inlet channel for injecting water into the beaker (4). The base (5) is connected to the machine body (1) and the beaker (4) is placed on the base (5) to drive the beaker (4) to move closer to or away from the stirring shaft (2); At least one water pipe (3) is fixedly connected to the body (1). The bottom of the water pipe (3) extends into the beaker (4), and the water inlet end of the water pipe (3) is detachably connected to a filter screen (301). The filter screen (301) is located on the side of the water outlet (202). The body (1) is equipped with a water pumping component that communicates with the water pipe (3).

2. The artificial sand mud content detection device according to claim 1, characterized in that, The water supply unit includes a water inlet pipe (101) fixedly connected to the outside of the body (1). The water inlet pipe (101) is connected to the water inlet channel through a first pipe, and a solenoid valve and a flow meter are installed on the first pipe.

3. The artificial sand mud content detection device according to claim 2, characterized in that, The drive unit includes a first motor (602) installed inside the body (1), a mounting base (6) rotatably connected inside the body (1), a square shaft fixedly connected to the top of the stirring shaft (2), the square shaft engaging with the mounting base (6), and a first gear (601) fixedly connected to the mounting base (6). The output end of the first motor (602) is fixedly connected to a second gear (603) meshing with the first gear (601).

4. The artificial sand mud content detection device according to claim 3, characterized in that, The body (1) is fixedly connected to a fixed cylinder (7). The housing of the first motor (602) is fixedly installed on the side wall of the fixed cylinder (7). The top of the fixed cylinder (7) is threadedly connected to a top cover (8). One end of the square shaft extends into the fixed cylinder (7) and abuts against the bottom of the top cover (8). The bottom of the top cover (8) is fixedly connected to an insertion tube (801) that communicates with the water inlet channel. A sealing ring is provided between the inner wall of the water inlet channel and the outer wall of the insertion tube (801). The end of the first pipe away from the water inlet pipe (101) is connected to the insertion tube (801).

5. The artificial sand mud content detection device according to claim 1, characterized in that, The bottom end of the stirring shaft (2) is detachably connected to a stirring blade (201). The stirring blade (201) is paddle-shaped, and the water outlet (202) is located on the side wall of the stirring shaft (2) above the stirring blade (201).

6. The artificial sand mud content detection device according to claim 1, characterized in that, The pumping assembly includes a water pump (302) fixedly connected inside the body (1), a drain pipe (102) fixedly connected to the outside of the body (1), one end of the water pump (302) is connected to the drain pipe (102), and the other end of the water pump (302) is connected to the pumping pipe (3) through a second pipe.

7. The artificial sand mud content detection device according to claim 1, characterized in that, The machine body (1) has a guide groove on its side wall, and a lead screw is rotatably connected in the guide groove. The base (5) extends into the guide groove and is threadedly connected to the lead screw. The machine body (1) is equipped with a second motor for driving the lead screw to rotate.

8. The artificial sand mud content detection device according to claim 1, characterized in that, A base pad (501) is fixedly connected to the base (5). A placement groove is opened on the top of the base pad (501). The bottom of the beaker (4) is located in the placement groove. A sealing gasket (103) is fixedly connected to the body (1). The end face of the mouth of the beaker (4) abuts against the sealing gasket (103).

9. The artificial sand mud content detection device according to claim 1, characterized in that, The front of the machine body (1) is equipped with a control panel and a display screen for centralized control of the device's lifting, stirring, water injection and drainage.

10. The artificial sand mud content detection device according to claim 1, characterized in that, The filter screen (301) has a pore size of less than or equal to 0.075 mm.

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