Fluidic alkaline residue manufacturing equipment

Abstract

The utility model discloses flow-state alkaline residue manufacturing equipment which mainly comprises a main stirring cylinder, a weighing sensor, a slurry storage pool, a discharging valve, a pumping pipeline, an alarm and an excavator feeding mechanism. Input ports of cement, slag powder, water and an additive are formed in the top of the main stirring cylinder, the input ports are connected with a raw material storage tank through closed conveying pipelines, and alkaline residues are directly fed through a feeding mechanism of an excavator. The weighing sensor monitors the weight of materials in real time and is linked with the alarm to control the feeding amount, the planetary stirring mechanism in the main stirring cylinder and the secondary stirring mechanism of the slurry storage pool synergistically improve the uniformity of the slurry, and the pumping pipeline conveys the slurry through the corrosion-resistant hose and the hydraulic pump. By means of the precise weighing and two-stage stirring structure, the problems that traditional equipment is large in alkali residue feeding error and uneven in slurry mixing are solved, the backfill compactness and construction efficiency are remarkably improved, and the device is particularly suitable for foundation pit backfill engineering in narrow space.

Description

Technical Field

[0001] This utility model relates to the field of fluidized alkali slag production technology, and in particular to a fluidized alkali slag production device. Background Technology

[0002] Fluidized alkaline slag preparation equipment is a specialized device for preparing fluidized alkaline slag slurry for foundation pit backfilling. It uses alkaline slag as the main raw material, mixing it with cementitious materials, water, and additives to form a self-leveling slurry, replacing the traditional layered compaction process. Traditional foundation pit backfilling often employs manual layered compaction or mechanical rolling, resulting in low efficiency and poor construction quality in confined spaces. While existing technologies exist for preparing fluidized alkaline slag using mixing equipment, their structural design has significant flaws: the alkaline slag feeding stage typically shares the same weighing system with cementitious materials and water, and the weighing sensor is only integrated at the bottom of the mixing tank, making it impossible to separate and measure the weight of the alkaline slag in real time during dynamic feeding. Because the alkaline slag needs to be fed in a non-enclosed manner using an excavator, its loose nature easily leads to uneven feeding speeds. Existing equipment lacks an independent alkaline slag weighing structure separate from the mixing tank, causing the actual feed amount to frequently deviate from the set value, resulting in fluctuations in slurry proportions and uneven compaction, directly affecting backfilling quality. This structural limitation makes it difficult for existing equipment to guarantee the stability and reliability of fluidized alkaline slag preparation. Utility Model Content

[0003] The purpose of this invention is to provide a fluidized alkali slag preparation device to solve the problem that existing equipment cannot guarantee the stability and reliability of fluidized alkali slag preparation.

[0004] This utility model provides a fluidized bed alkali slag production device, including a main mixing tank with a weighing sensor installed at its bottom for real-time measurement of the weight of alkali slag, cement, slag powder, water, and admixtures; a slurry storage tank is connected to the main mixing tank via a discharge valve located between the discharge port of the main mixing tank and the inlet of the slurry storage tank; one end of a pumping pipeline is connected to the discharge end of the slurry storage tank, and the other end extends to the casting area; an alarm is electrically connected to the weighing sensor, triggering an alarm when the weighing sensor detects that the weight of the alkali slag reaches a preset value; an excavator loading mechanism is used to transport the alkali slag to the main mixing tank, and the excavator loading mechanism stops operating after the alarm is triggered; the top of the main mixing tank is equipped with a cement inlet, a slag powder inlet, a water inlet, and an admixture inlet, each inlet being connected to a corresponding raw material storage tank via a closed conveying pipeline, and the alkali slag is directly fed into the main mixing tank via the excavator loading mechanism.

[0005] Furthermore, the main mixing tank is equipped with a planetary mixing mechanism, which includes a mixing shaft and multiple mixing blades fixed on the mixing shaft. The mixing shaft is driven to rotate by a first motor.

[0006] Furthermore, the weighing sensor is installed between the support base of the main mixing cylinder and the equipment frame.

[0007] Furthermore, the unloading valve is an electrically controlled valve, and its valve body is equipped with a manual operating lever, which is mechanically connected to the valve body's switching mechanism.

[0008] Furthermore, the slurry storage tank is equipped with a secondary mixing mechanism, which includes a mixing paddle and a second motor. The rotation axis of the mixing paddle coincides with the central axis of the slurry storage tank.

[0009] The beneficial effects of this utility model are as follows: By setting a weighing sensor at the bottom of the main mixing tank, the weight of the alkali residue and other materials is monitored in real time. Combined with the linkage control of the alarm and the excavator's feeding mechanism, the amount of alkali residue fed is ensured to be accurate and controllable, avoiding the fluctuation of the ratio caused by human operation error. The closed conveying pipeline and the separation design of other raw material storage tanks reduce material mixing interference and improve the uniformity of the slurry. The secondary mixing mechanism of the slurry storage tank further optimizes the slurry density and, together with the pumping pipeline, achieves efficient pouring. Ultimately, it solves the problem of unstable backfill quality caused by structural defects in existing equipment, while improving construction efficiency and reducing the risk of human intervention. Attached Figure Description

[0010] To more clearly illustrate the technical solution of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 A structural diagram of the fluidized alkali slag production equipment provided by this utility model.

[0012] Diagram Explanation: 1-Main mixing cylinder; 2-Weighing sensor; 3-Discharge port; 4-Inlet port; 5-Slurry storage tank; 6-Discharge valve; 7-Pumping pipeline; 8-Discharge end; 9-Alarm; 10-Excavator loading mechanism; 11-Cement inlet; 12-Slag powder inlet; 13-Water inlet; 14-Admixture inlet; 15-Closed conveying pipeline; 16-Raw material storage tank; 17-Planetary mixing mechanism; 18-Mixing shaft; 19-Mixing blades; 20-First motor; 21-Support base; 22-Equipment frame; 23-Valve body; 24-Manual operating lever; 25-Secondary mixing mechanism; 26-Mixing paddle; 27-Second motor. Detailed Implementation

[0013] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be pointed out that the following detailed description is illustrative and 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 this application pertains.

[0014] 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.

[0015] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions has been enlarged, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0016] Please see Figure 1This utility model provides a fluidized alkali slag production device, including a main mixing tank 1. A weighing sensor 2 is installed at the bottom of the main mixing tank 1. The weighing sensor 2 is used to measure the weight of alkali slag, cement, slag powder, water and admixtures in real time. Its measurement accuracy can reach 1 kg level, ensuring accurate proportioning data. A slurry storage tank 5 is connected to the main mixing tank 1 through a discharge valve 6. The discharge valve 6 is located between the discharge port 3 of the main mixing tank 1 and the inlet 4 of the slurry storage tank 5. The slurry is discharged on demand through electric or manual control. One end of the pumping pipe 7 is connected to the discharge end 8 of the slurry storage tank 5, and the other end extends to the casting area. An alarm 9 is electrically connected to the weighing sensor 2. When the weighing sensor 2 detects that the weight of the alkali slag has reached a preset value, the alarm is triggered immediately, and the excavator loading mechanism 10 is stopped to avoid over-feeding.

[0017] In this embodiment, the linkage control function between the alarm 9 and the weighing sensor 2 is implemented through a pure hardware circuit. The specific circuit structure and workflow are as follows:

[0018] Weighing sensor 2 is a resistance strain gauge sensor. Its output is connected to a differential amplifier, which amplifies the millivolt-level voltage signal output by weighing sensor 2 into a 0-5V standard signal. The amplification factor is adjusted by a potentiometer. The amplified signal is connected to a voltage comparator, such as an LM393. The reference voltage terminal of the comparator is connected to an adjustable resistor. By adjusting the adjustable resistor, a voltage threshold corresponding to the preset weight of alkali residue is set, such as 2.5V corresponding to 500kg. When the sensor signal voltage exceeds the threshold, the comparator output changes from low to high. The comparator output drives a relay through a current-limiting resistor. The normally open contact of the relay is connected in series to the power supply circuit of the alarm. When the comparator outputs a high level, the relay is activated, the alarm circuit is turned on, and an audible and visual alarm is emitted. The other set of normally closed contacts of the relay is connected in series to the power supply circuit of the excavator's loading mechanism 10. When the relay is activated, the normally closed contacts are opened, directly cutting off the power supply to the motor of the loading mechanism, forcing it to stop operating. In addition, a filter capacitor is connected in parallel at the input of the comparator to eliminate high-frequency interference signals; a freewheeling diode, model 1N4007, is connected in reverse parallel across the two ends of the relay coil to prevent the generation of reverse electromotive force when the coil is de-energized, which could damage the circuit.

[0019] During the feeding of alkali residue, the weighing sensor 2 outputs a weight signal in real time. After amplification and threshold comparison, if the detected value exceeds the set value, the comparator outputs a high level, the relay is activated, the alarm 9 is powered on, and the power supply to the feeding mechanism 10 is forcibly cut off. The entire process relies on hardware circuit logic judgment and control, without the need for software program intervention. Judgment and control are achieved entirely through analog circuits and relays, avoiding the risk of software program failure; the adjustable resistor provides a manual calibration function for preset weight thresholds, adapting to different proportion requirements without programming; the relay hard cut-off mechanism ensures that the power-off response time of the feeding mechanism 10 is less than 50ms, preventing overfeeding.

[0020] The main mixing tank 1 is equipped with a cement inlet 11, a slag powder inlet 12, a water inlet 13, and an admixture inlet 14 at the top. Each inlet is connected to the corresponding raw material storage tank 16 through a closed conveying pipeline 15 to realize the automatic feeding of cementitious materials, water and admixtures. The alkali slag is directly fed into the main mixing tank 1 through the excavator feeding mechanism 10 to form an independent feeding channel and reduce material mixing.

[0021] The main mixing tank 1 is equipped with a planetary mixing mechanism 17, which includes a mixing shaft 18 and multiple mixing blades 19 fixed on the mixing shaft 18. The mixing shaft 18 is driven to rotate at high speed by a first motor 20 to ensure that the alkali residue is fully mixed with other materials. The weighing sensor 2 is installed between the support base 21 and the equipment frame 22 of the main mixing tank 1, directly bearing the weight of the main mixing tank 1 and providing real-time data feedback. The valve body 23 of the discharge valve 6 is equipped with a manual operating lever 24, which is mechanically connected to the switching mechanism of the valve body 23, allowing for manual operation in case of power failure or emergency. The slurry storage tank 5 is equipped with a secondary mixing mechanism 25, which includes a mixing paddle 26 and a second motor 27. The rotation axis of the mixing paddle 26 coincides with the central axis of the slurry storage tank 5, performing secondary low-speed mixing of the slurry to further improve its uniformity and density.

[0022] When the equipment is working, cement, slag powder, water and admixtures are first automatically fed into the main mixing cylinder 1 according to the preset ratio through the closed conveying pipeline 15. At the same time, the excavator feeding mechanism 10 feeds alkali slag into the main mixing cylinder 1 at a uniform speed. The weighing sensor 2 monitors the weight of the alkali slag in real time. When the set value is reached, the alarm 9 is triggered and the excavator feeding mechanism 10 stops running. The planetary mixing mechanism 17 in the main mixing cylinder 1 mixes the mixed materials at high speed to form a preliminary slurry. Then, the discharge valve 6 is opened to discharge the slurry into the slurry storage tank 5. The secondary mixing mechanism 25 in the slurry storage tank 5 mixes the slurry a second time and then transports it to the pouring area for backfilling through the pumping pipeline 7.

[0023] This invention uses a linkage design between the weighing sensor 2 and the alarm 9 to precisely control the amount of alkali residue fed in, and combines it with a closed conveying pipeline 15 to achieve automatic feeding of other raw materials, thus completely solving the problem of ratio fluctuation caused by inaccurate weighing of alkali residue in existing equipment. The dual-stage stirring structure of the main stirring cylinder 1 and the slurry storage tank 5 ensures the uniformity of the slurry, ultimately achieving efficient preparation of fluidized alkali residue and controllable improvement of backfill quality, which is especially suitable for foundation pit backfilling projects in confined spaces and complex working conditions.

[0024] 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.

[0025] It should be noted that the terms "first," "second," etc., 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, for example, in sequences other than those illustrated or described herein.

[0026] 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 fluidized bed alkali slag production device, characterized in that, include: The main mixing tank (1) is equipped with a weighing sensor (2) at its bottom. The weighing sensor (2) is used to measure the weight of alkali residue, cement, slag powder, water and admixtures in real time. The slurry storage tank (5) is connected to the main mixing cylinder (1) through the discharge valve (6), and the discharge valve (6) is located between the discharge port (3) of the main mixing cylinder (1) and the inlet (4) of the slurry storage tank (5); The pumping pipeline (7) is connected at one end to the discharge end (8) of the slurry storage tank (5) and at the other end to the pouring area. An alarm (9) is electrically connected to the weighing sensor (2). When the weighing sensor (2) detects that the weight of the alkali residue has reached a preset value, an alarm is triggered. The excavator loading mechanism (10) is used to convey alkali residue to the main mixing cylinder (1). After the alarm (9) is triggered, the excavator loading mechanism (10) stops working. The main mixing tank (1) is provided with a cement inlet (11), a slag powder inlet (12), a water inlet (13) and an admixture inlet (14) at the top. Each inlet is connected to the corresponding raw material storage tank (16) through a closed conveying pipeline (15). The alkali slag is directly fed into the main mixing tank (1) through the excavator feeding mechanism (10).

2. The fluidized alkali slag preparation equipment according to claim 1, characterized in that, The main mixing tank (1) is equipped with a planetary mixing mechanism (17), which includes a mixing shaft (18) and multiple mixing blades (19) fixed on the mixing shaft (18). The mixing shaft (18) is driven to rotate by a first motor (20).

3. The fluidized alkali slag preparation equipment according to claim 1, characterized in that, The weighing sensor (2) is installed between the support base (21) of the main mixing tank (1) and the equipment frame (22).

4. The fluidized alkali slag preparation equipment according to claim 1, characterized in that, The unloading valve (6) is an electrically controlled valve, and its valve body (23) is equipped with a manual operating lever (24), which is mechanically connected to the switching mechanism of the valve body (23).

5. The fluidized alkali slag preparation equipment according to claim 1, characterized in that, The slurry storage tank (5) is equipped with a secondary stirring mechanism (25), which includes a stirring paddle (26) and a second motor (27). The rotation axis of the stirring paddle (26) coincides with the central axis of the slurry storage tank (5).

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