Concrete waste slurry density testing device

Abstract

The invention discloses a concrete waste slurry density testing device, and relates to the technical field of waste slurry density testing equipment.The concrete waste slurry density testing device comprises a testing box body, a waste slurry weighing hopper arranged in the testing box body and used for bearing waste slurry, and an air pressure butterfly valve arranged at the bottom of the waste slurry weighing hopper and used for controlling discharge of the waste slurry; the at least three weighing sensor bodies are arranged on the outer side of the waste slurry weighing hopper and are distributed in a triangular shape; according to the invention, the at least three pressure type weighing sensor bodies are distributed in a triangle shape, the triangle stability principle is utilized, the balance during measurement is ensured, and the weight of the waste slurry weighing hopper and the weight of waste slurry in the waste slurry weighing hopper can be accurately measured. The resistance value of the strain gauge in the pressure type weighing sensor body is changed under pressure, an electric signal in proportion to the pressure is generated and transmitted to the external display device, and compared with traditional manual sampling detection, the measurement accuracy is further improved, and the problem that waste slurry is improperly treated due to measurement errors is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of waste slurry density testing equipment, and specifically to a device for testing the density of concrete waste slurry. Background Technique

[0002] As one of the most widely used building materials in construction projects, a large amount of waste slurry (mainly including unhydrated cement particles, aggregate separation substances, and admixture residues) is inevitably generated during the production of concrete. According to statistics, the amount of waste slurry generated by domestic commercial concrete enterprises each year has exceeded hundreds of millions of tons. If not effectively treated, it will not only cause a great waste of resources but also trigger environmental problems such as dust pollution and water eutrophication.

[0003] The technology of waste slurry recycling has become an important breakthrough point for achieving the zero-emission goal of commercial concrete enterprises. By reusing waste slurry in concrete production, recycled aggregate manufacturing, or concrete additives, the exploitation of natural sand and gravel and the consumption of new cement can be significantly reduced, and carbon emissions can be lowered.

[0004] However, the stability of waste slurry density is a prerequisite for its efficient utilization. Existing testing methods often include manual sampling +

[0005] laboratory drying and density determination. First of all, the entire process often takes several hours to complete. The long detection cycle seriously restricts production efficiency and cannot meet the requirements of real-time monitoring and timely adjustment of production parameters. Moreover, this method lacks a self-cleaning mechanism. During the testing process, the cement flocs in the waste slurry are easily attached to the surface of the sensor and gradually form a crystal layer over time. This not only affects the sensing sensitivity of the sensor to subsequent samples, resulting in a significant decrease in measurement accuracy, but also requires frequent maintenance work such as disassembling, cleaning, and calibrating the sensor. Summary of the Invention

[0006] The purpose of the present invention is to provide a device for testing the density of concrete waste slurry to solve the problems raised in the above background technique.

[0007] To solve the above technical problems, a device for testing the density of concrete waste slurry provided by the present invention includes a test box body, including

[0008] a waste slurry weighing hopper, which is arranged inside the test box body and is used to carry waste slurry. A pneumatic butterfly valve is provided at the bottom of the waste slurry weighing hopper to control the discharge of waste slurry;

[0009] a weighing sensor body, at least three, which are arranged outside the waste slurry weighing hopper and are distributed in a triangular shape, and are used to measure the weight of the waste slurry weighing hopper and the waste slurry inside;

[0010] a waste slurry conveying pipe, which is arranged on the test box body and is used to convey waste slurry;

[0011] The spray water delivery pipe is arranged on the main body of the test box and is used to deliver spray water to wash the waste slurry weighing hopper.

[0012] Further, the waste slurry weighing hopper includes a drainage section and a collection section arranged in sequence from the feed direction to the discharge direction. The drainage section is used to guide the waste slurry to flow in, and the collection section is used to centrally collect the waste slurry. Among them,

[0013] The waste slurry weighing hopper is in a frustum shape, and the upper mouth radius of the drainage section is greater than the lower mouth radius of the collection section;

[0014] The position of the pneumatic butterfly valve is at the bottom of the collection section.

[0015] Further, the waste slurry delivery pipe includes a waste slurry introduction section, a waste slurry delivery section, and a waste material export section arranged in sequence along the material delivery direction. The waste slurry introduction section is connected to an external waste slurry source, and the waste material export section corresponds to the feed port of the waste slurry weighing hopper. Among them,

[0016] The waste material export section is inclined.

[0017] Further, at least three reinforcing crossbeams are fixedly connected inside the main body of the test box, and the weighing sensor body is installed on the reinforcing crossbeams.

[0018] Further, the weighing sensor body is a pressure type weighing sensor, and the weighing sensor body is connected to an external display device.

[0019] Further, a detachable rotary nozzle is provided at the end of the spray water delivery pipe for washing the inner wall of the waste slurry weighing hopper.

[0020] Further, a first sealing door and a second sealing door are hinged on the main body of the test box. Among them,

[0021] The first sealing door is located above the waste slurry weighing hopper and is used for operating and maintaining the upper part of the waste slurry weighing hopper;

[0022] The second sealing door is located on the side of the waste slurry weighing hopper, which is convenient for inspecting and repairing the side of the waste slurry weighing hopper.

[0023] Further, the waste slurry weighing hopper is made of stainless steel.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. At least three pressure - type weighing sensor bodies distributed in a triangular shape. Utilizing the principle of triangular stability, it ensures balance during measurement and can accurately measure the weight of the waste slurry weighing hopper and the internal waste slurry. Moreover, the strain gauges inside the pressure - type weighing sensor body change their resistance values under pressure, generating electrical signals proportional to the pressure and transmitting them to an external display device. Compared with traditional manual sampling detection, it further improves the measurement accuracy and effectively avoids improper waste slurry treatment caused by measurement errors.

[0026] 2. The waste slurry weighing hopper adopts a frustum - shaped structure, with a large upper - mouth radius in the drainage section and a small lower - mouth radius in the collection section, and the waste - material export section is inclined. This enables the waste slurry to flow in efficiently and be centrally collected. Under the action of gravity, the waste slurry quickly flows into the weighing hopper and is discharged. At the same time, the inclined waste - material export section accelerates the waste slurry transportation by means of gravity, reducing the residue and transportation time of the waste slurry in the device and improving the efficiency of the entire waste slurry treatment process.

[0027] 3. The steep wall of the waste slurry weighing hopper cooperates with the rotating nozzle at the end of the spray water delivery pipe. It can quickly discharge the waste slurry after detection and conduct a full - range flushing of the barrel wall, washing the remaining waste slurry to the bottom and flowing out with the waste slurry. The rotating nozzle can also rotate and is detachable, facilitating cleaning and maintenance, effectively preventing the formation of a crystal layer due to the residue of cement flocculants in the waste slurry near the sensor and ensuring the cleanliness and stability of the device during long - term use.

[0028] 4. The waste slurry weighing hopper is made of stainless steel, which has good corrosion resistance and can resist the erosion of chemical substances in the waste slurry, preventing weight changes caused by the corrosion of the weighing hopper. Further ensuring the stability of the device and the accuracy of measurement, at least three strengthening cross - beams fixedly connected inside the test box body provide stable support for the weighing sensor body.

[0029] 5. The first sealing door and the second sealing door set on the test box body facilitate operators to operate and maintain different parts of the waste slurry weighing hopper, can clean the remaining waste slurry in time, and ensure the normal operation of the device. The pressure - type weighing sensor body is connected to an external display device, which can display the measured weight data in real time, facilitating operators to read and record and accelerating the detection speed. Brief Description of the Drawings

[0030] Figure 1 is the overall structural schematic diagram of the present invention;

[0031] Figure 2 is the first cross - sectional view of the present invention;

[0032] Figure 3 is the second cross - sectional view of the present invention;

[0033] Figure 4 is the plan view of the present invention;

[0034] Figure 5 is the first side view of the present invention;

[0035] Figure 6 is the second side view of the present invention;

[0036] Figure 7 is the Figure 2 enlarged view of the structure at A in the present invention.

[0037] In the figure: 1. Test box body; 2. Waste slurry weighing hopper; 201. Drainage section; 202. Collection section; 3. Pneumatic butterfly valve; 4. Weighing sensor; 5. Waste slurry conveying pipe; 501. Waste slurry inlet section; 502. Waste slurry conveying section; 503. Waste material outlet section; 6. Spray water conveying pipe; 7. Rotating spray head; 8. Reinforcing cross beam; 9. First sealing door; 10. Second sealing door. Specific embodiments

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] Please refer to Figures 1-7 , the present invention provides a technical solution: a device for testing the density of concrete waste slurry, including a test box body 1, including,

[0040] A waste slurry weighing hopper 2, which is arranged in the test box body 1 and is used to carry waste slurry. A pneumatic butterfly valve 3 is arranged at the bottom of the waste slurry weighing hopper 2 to control the discharge of waste slurry;

[0041] The weighing sensor body 4, at least three, is arranged outside the waste slurry weighing hopper 2 and is distributed in a triangular shape, and is used to measure the weight of the waste slurry weighing hopper 2 and the internal waste slurry;

[0042] A waste slurry conveying pipe 5, which is arranged on the test box body 1 and is used to convey waste slurry;

[0043] A spray water conveying pipe 6, which is arranged on the test box body 1 and is used to convey spray water to wash the waste slurry weighing hopper 2.

[0044] During specific implementation, the waste slurry is sent into the test box body 1 through the waste slurry conveying pipe 5 and enters the waste slurry weighing hopper 2. Subsequently, at least three weighing sensor bodies 4 distributed in a triangular shape outside the waste slurry weighing hopper 2 start to work. Based on the principle of triangular stability, these sensors can measure the weight of the waste slurry weighing hopper 2 and the waste slurry inside. The sensors transmit the measurement data to an external display device. Operators can obtain the density value of the waste slurry according to these data and in combination with a pre-set calculation method. After the density measurement is completed, the pneumatic butterfly valve 3 is opened, and the waste slurry in the waste slurry weighing hopper 2 is discharged under the action of gravity through the pneumatic butterfly valve 3 at the bottom. Subsequently, the spray water conveying pipe 6 conveys spray water to wash the waste slurry weighing hopper 2. In this setting, at least three weighing sensor bodies 4 distributed in a triangular shape ensure balance during measurement using the principle of triangular stability, improving the accuracy of measuring the weight of the waste slurry weighing hopper 2 and the waste slurry inside, and thus enhancing the accuracy of calculating the waste slurry density.

[0045] Please refer to Figures 1-7 , the waste slurry weighing hopper 2 includes a diversion section 201 and a collection section 202 arranged in sequence from the feed direction to the discharge direction. The diversion section 201 is used to guide the waste slurry to flow in, and the collection section 202 is used to centrally collect the waste slurry. Among them,

[0046] the waste slurry weighing hopper 2 is in a frustum shape, and the upper mouth radius of the diversion section 201 is larger than the lower mouth radius of the collection section 202;

[0047] the position of the pneumatic butterfly valve 3 is at the bottom of the collection section 202.

[0048] It should be noted that in this application, the upper mouth radius is preferably 480 mm, the lower mouth radius is 50 mm, the height is 600 mm, and the steep slope of the bucket wall is close to 85 degrees. It cooperates with the spray water conveyed by the upper spray water conveying pipe 6 to wash the bucket wall, quickly discharges the waste slurry after the detection is completed, and ensures that the waste slurry weighing hopper 2 does not scale during long-term use.

[0049] During specific implementation, the waste slurry flows into the diversion section 201 of the waste slurry weighing hopper 2 through the waste slurry conveying pipe 5. Since the upper mouth radius of the diversion section 201 is relatively large, the waste slurry can enter the weighing hopper more smoothly. Under the action of gravity, the waste slurry flows downward along the frustum-shaped diversion section 201 and gradually converges to the collection section 202. The lower mouth radius of the collection section 202 is relatively small, and a pneumatic butterfly valve 3 is arranged at the bottom. This setting is conducive to centrally collecting the waste slurry and controlling the discharge of the waste slurry by controlling the opening and closing of the pneumatic butterfly valve 3 when needed;

[0050] When the waste slurry density detection is completed, the pneumatic butterfly valve 3 is opened, and the waste slurry quickly discharges from the bottom of the collection section 202 under the action of gravity. At this time, the spray water conveyed by the spray water conveying pipe 6 washes the bucket wall of the waste slurry weighing hopper 2 through the nozzle 7. Since the steep slope of the bucket wall of the weighing hopper is close to 85

[0051] Degree, during the flushing process, the sprayed water can utilize the slope of the steep slope to quickly flush the residual waste slurry on the barrel wall to the bottom, and flow out together with the discharged waste slurry, achieving the effect of quickly discharging the waste slurry, effectively preventing the residual waste slurry in the waste slurry weighing hopper 2;

[0052] In this setting, by setting a larger upper mouth radius and a smaller lower mouth radius, the waste slurry can flow in and be centrally collected efficiently, reducing the dispersion and residue of the waste slurry in the waste slurry weighing hopper 2, improving the efficiency of the entire waste slurry treatment process. And the steep slope of the platform wall close to 85 degrees, in cooperation with the flushing action of the sprayed water, can quickly discharge the waste slurry after the detection is completed, preventing the waste slurry from adhering to the wall of the waste slurry weighing hopper 2 for a long time, effectively preventing substances such as cement flocs in the waste slurry from crystallizing and scaling on the weighing hopper wall, ensuring the cleanliness of the waste slurry weighing hopper 2 during long-term use, and then ensuring the accuracy of the measurement of the weighing sensor 4, reducing the measurement error caused by the scaling of the waste slurry weighing hopper 2.

[0053] Please refer to Figures 1-7 , the waste slurry conveying pipe 5 includes a waste slurry introduction section 501, a waste slurry conveying section 502, and a waste material export section 503 arranged in sequence along the material conveying direction. The waste slurry introduction section 501 is connected to an external waste slurry source, and the waste material export section 503 corresponds to the feed inlet of the waste slurry weighing hopper 2. Among them,

[0054] The waste material export section 503 is inclined.

[0055] It should be noted that an external conveying component such as a water pump can be used to convey the slurry through the waste slurry conveying pipe 5 into the waste slurry weighing hopper 2.

[0056] During specific implementation, the waste slurry in the external waste slurry source first enters the waste slurry conveying section 502 through the waste slurry introduction section 501 connected to the outside and is continuously conveyed. When the waste slurry reaches the waste material export section 503, due to the inclined setting of the waste material export section 503 and its corresponding to the feed inlet of the waste slurry weighing hopper 2, under the action of gravity, the waste slurry will flow downward along the inclined waste material export section 503 at an accelerated speed and flow into the waste slurry weighing hopper 2. In this setting, the inclined waste material export section 503 utilizes the gravity to enable the waste slurry to flow into the waste slurry weighing hopper 2 more quickly, further improving the conveying efficiency of the waste slurry.

[0057] Please refer to Figures 1-7 , at least three strengthening crossbeams 8 are fixedly connected inside the test box body 1, and the weighing sensor body 4 is installed on the strengthening crossbeams 8.

[0058] During specific implementation, the strengthening crossbeams 8 provide stable support for the weighing sensor body 4, ensuring that the position of the weighing sensor body 4 is fixed during the weighing process, and ensuring that the weighing sensor body 4 can stably measure the weight of the waste slurry weighing hopper 2 and the internal waste slurry.

[0059] Please refer toFigures 1-7 , the weighing sensor body 4 is a pressure type weighing sensor, and the weighing sensor body 4 is connected to an external display device.

[0060] It should be noted that the pressure type weighing sensor body 4 usually adopts sensitive elements such as strain gauges inside. After being subjected to pressure, the resistance value of the strain gauge will change. This change in the resistance value will cause the electrical parameters of the internal circuit of the sensor to change, and then generate an electrical signal proportional to the magnitude of the applied pressure.

[0061] During specific implementation, the pressure type weighing sensor body 4 converts the sensed pressure into an electrical signal. By connecting to an external display device, the measured weight data is displayed in real time, which is convenient for the operator to read and record. Compared with the traditional method of manual sampling and laboratory analysis, this setting enables the operator to obtain the weight data of the waste slurry in a timely manner, speeds up the detection speed, and solves the problem of the long detection cycle of the traditional method.

[0062] Please refer to Figures 1-7 , a rotatable nozzle 7 is detachably connected to the end of the spray water delivery pipe 6 for flushing the inner wall of the waste slurry weighing hopper 2.

[0063] During specific implementation, the spray water is transported from the spray water delivery pipe 6 to the rotatable nozzle 7 at the end. The rotatable nozzle 7 can rotate to perform a full-range flushing of the inner wall of the waste slurry weighing hopper 2, washing away the remaining waste slurry. The detachable connection facilitates the replacement of the nozzle or the cleaning and maintenance of the nozzle. The rotating flushing function of the rotatable nozzle 7 in this setting can effectively clean the inner wall of the waste slurry weighing hopper 2 and prevent the formation of a crystal layer due to the residue of cement flocs in the waste slurry near the sensor.

[0064] Please refer to Figures 1-7 , a first sealing door 9 and a second sealing door 10 are hinged on the test box body 1, where

[0065] The first sealing door 9 is located above the waste slurry weighing hopper 2 for operating and maintaining the upper part of the waste slurry weighing hopper 2;

[0066] The second sealing door 10 is located on the side of the waste slurry weighing hopper 2, facilitating the inspection and repair of the side of the waste slurry weighing hopper 2.

[0067] During specific implementation, the settings of the first sealing door 9 and the second sealing door 10 facilitate the operation and maintenance of different parts of the waste slurry weighing hopper 2, timely clean the remaining waste slurry, and ensure the normal operation of the device.

[0068] Please refer to Figures 1-7 , the waste slurry weighing hopper 2 is made of stainless steel.

[0069] During specific implementation, the waste slurry weighing hopper 2 is made of stainless steel. During the contact with the waste slurry, the stainless steel material has good corrosion resistance and can resist the erosion of chemical substances in the waste slurry. The stainless steel waste slurry weighing hopper 2 can prevent the weight of the weighing hopper from changing due to corrosion, thereby ensuring the measurement accuracy of the weighing sensor body 4, avoiding the problem of measuring accuracy affected by corrosion of the weighing hopper in traditional testing devices, and extending the service life of the device.

[0070] Working principle: The waste slurry from the external waste slurry source enters the waste slurry conveying section 502 of the waste slurry conveying pipe 5 through the waste slurry inlet section 501 connected to the outside. Under the action of external conveying parts such as water pumps, the waste slurry is continuously conveyed forward. When the waste slurry reaches the waste material outlet section 503 which is set obliquely, because the waste material outlet section 503 corresponds to the feed inlet of the waste slurry weighing hopper 2, under the action of gravity, the waste slurry is accelerated to flow into the drainage section 201 of the waste slurry weighing hopper 2;

[0071] The waste pulp weighing hopper 2 is in the shape of a truncated cone, and the upper opening radius of the drainage section 201 is large, so that the waste pulp can flow in smoothly. Under the action of gravity, the waste pulp flows downward along the truncated cone structure and converges to the collection section 202 with a small lower opening radius. At this time, at least three pressure weighing sensor bodies 4 distributed in a triangular shape on the outside of the waste pulp weighing hopper 2 and installed on the reinforcing crossbeam 8 start to work. Based on the principle of triangular stability, these sensors stably measure the weight of the waste pulp weighing hopper 2 and the waste pulp inside. The internal strain gauge of the pressure weighing sensor body 4 changes its resistance value due to pressure, causing the electrical parameters of the circuit to change, and generating an electrical signal proportional to the pressure. The signal is transmitted to the external display device, and the operator obtains the waste pulp density value based on the data combined with the preset calculation method.

[0072] After the density measurement is completed, the air pressure butterfly valve 3 located at the bottom of the collecting section 202 is opened, and the waste slurry is quickly discharged from the bottom of the collecting section 202 under the action of gravity.

[0073] The spray water is delivered from the spray water delivery pipe 6 to the rotary nozzle 7 detachably connected at the end, and the rotary nozzle 7 performs all-round flushing on the inner wall of the waste slurry weighing hopper 2. Since the steep slope of the wall of the waste slurry weighing hopper 2 is close to 85 degrees, the spray water uses the steep slope to quickly flush the residual waste slurry on the barrel wall to the bottom, and flows out with the discharged waste slurry. At the same time, the first sealing door 9 and the second sealing door 10 on the test box body 1 facilitate the operator to operate and maintain different parts of the waste slurry weighing hopper 2, and clean up the residual waste slurry in time. In addition, the waste slurry weighing hopper 2 is made of stainless steel to resist the erosion of chemical substances in the waste slurry, prevent the weight of the weighing hopper from changing due to corrosion, and ensure the measurement accuracy of the weighing sensor body 4.

Claims

1. A device for testing the density of concrete waste slurry, comprising a test box body (1), characterized in that, Including, A waste pulp weighing hopper (2), which is arranged inside the test box body (1) and is used to carry waste pulp. A pneumatic butterfly valve (3) is arranged at the bottom of the waste pulp weighing hopper (2) to control the discharge of waste pulp; The weighing sensor body (4), at least three of which are arranged outside the waste pulp weighing hopper (2) and are distributed in a triangular shape, is used to measure the weight of the waste pulp weighing hopper (2) and the waste pulp inside; A waste pulp conveying pipe (5), which is arranged on the test box body (1) and is used to convey waste pulp; A spray water conveying pipe (6), which is arranged on the test box body (1) and is used to convey spray water to wash the waste pulp weighing hopper (2).

2. The concrete waste slurry density testing device according to claim 1, wherein: The waste pulp weighing hopper (2) includes a diversion section (201) and a collection section (202) arranged in sequence from the feed direction to the discharge direction. The diversion section (201) is used to guide the waste pulp to flow in, and the collection section (202) is used to centrally collect the waste pulp. Among them, The waste pulp weighing hopper (2) is of a frustum-shaped structure, and the upper mouth radius of the diversion section (201) is greater than the lower mouth radius of the collection section (202); The position of the pneumatic butterfly valve (3) is at the bottom of the collection section (202).

3. The concrete waste slurry density testing device according to claim 1, characterized in that: The waste pulp conveying pipe (5) includes a waste pulp introduction section (501), a waste pulp conveying section (502), and a waste material export section (503) arranged in sequence along the material conveying direction. The waste pulp introduction section (501) is connected to an external waste pulp source, and the waste material export section (503) corresponds to the feed port of the waste pulp weighing hopper (2). Among them, The waste material export section (503) is inclined.

4. The concrete waste slurry density testing device according to claim 1, wherein: At least three strengthening cross beams (8) are fixedly connected inside the test box body (1), and the weighing sensor body (4) is installed on the strengthening cross beams (8).

5. A device for testing the density of concrete waste slurry according to claim 1, characterized in that: The weighing sensor body (4) is a pressure type weighing sensor, and the weighing sensor body (4) is connected to an external display device.

6. The concrete waste slurry density testing device according to claim 1, wherein: A detachable rotating spray head (7) is arranged at the end of the spray water conveying pipe (6) to wash the inner wall of the waste pulp weighing hopper (2).

7. The concrete waste slurry density testing device according to claim 1, characterized in that: A first sealing door (9) and a second sealing door (10) are hinged on the test box body (1). Among them, The first sealing door (9) is located above the waste pulp weighing hopper (2) and is used for operation and maintenance above the waste pulp weighing hopper (2); The second sealing door (10) is located on the side of the waste pulp weighing hopper (2) to facilitate inspection and repair of the side of the waste pulp weighing hopper (2).

8. The concrete waste slurry density testing device according to claim 1, wherein: The waste pulp weighing hopper (2) is made of stainless steel.

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