An adaptive addition system for curing agents of phosphogypsum-based fillers

Abstract

This utility model provides an adaptive addition system for curing agents of phosphogypsum-based filling materials, relating to the field of mixing mechanism technology. It includes: a mixing tank for supporting the mixed materials; a mixing mechanism for mixing the materials within the tank, the mixing mechanism also equipped with a moisture content sensor for monitoring the material's moisture content; and a weighing and discharging mechanism, wherein four weighing sensors are symmetrically mounted on support platforms on both sides. The material support platform is a hollow eccentric frustum structure, wider at the top and narrower at the bottom. The flat-nozzle discharging head faces the tangent of the rotation trajectory of the mixing mechanism. This utility model incorporates moisture content sensors on the mixing mechanism, enabling automatic adjustment of the moisture content of the mixed materials. A single weighing mechanism can weigh and discharge all materials, ensuring the correct feeding angle for all materials and preventing agglomeration during the feeding process, thus fully guaranteeing the uniformity of the mixing.

Description

Technical Field

[0001] This utility model relates to the field of stirring mechanism technology, specifically to an adaptive addition system for curing agent of phosphogypsum-based filling material. Background Technology

[0002] Phosphogypsum is a solid waste product from phosphate chemical production, with a moisture content typically between 5% and 30%. When phosphogypsum is used as a filler material, curing agents such as cement, mineral powder, and activators need to be added to improve its mechanical properties. However, existing mixing technologies suffer from the following common problems:

[0003] 1. Moisture content blind spot: Existing equipment cannot detect the moisture content of phosphogypsum in real time, resulting in a fixed ratio of hardener addition, which cannot adapt to changes in moisture content;

[0004] 2. High degree of manual intervention: Modifiers need to be weighed in advance and then added manually, which is inefficient and prone to errors;

[0005] 3. Uneven mixing: The curing agent is prone to agglomeration when added directly, resulting in uneven mixing.

[0006] A weighing machine with a stirring function, disclosed in the prior art (CN201921147997.8), includes a feeding mechanism, a weighing mechanism, a stirring mechanism, and a storage mechanism installed sequentially from top to bottom. The feeding mechanism includes a pyramid-shaped hopper, which is inverted and mounted on the weighing mechanism. Multiple partitions divide the hopper into several compartments. The weighing mechanism includes a weighing chamber, with the hopper fixed to the top. A weighing pan and multiple gravity sensors are installed inside the weighing chamber, evenly distributed and fixed on the gravity sensors. The stirring mechanism includes a stirring chamber connected to the weighing chamber and a stirring wheel driven by a motor. The storage mechanism includes a storage tank connected to the stirring chamber. Discharge valves for discharging materials are provided at the bottom of the compartments, the weighing pan, and the stirring chamber. This allows for the separate weighing of different types of materials, followed by mixing, reducing labor intensity and improving production efficiency.

[0007] However, the device still has some obvious defects in use: the device is equipped with multiple hoppers, and each material is weighed separately. Therefore, multiple independent weighing mechanisms are required. In addition, the mixing device cannot monitor the moisture content of the material being mixed in real time and automatically add materials according to the moisture content, so the level of intelligence is not high. Utility Model Content

[0008] The purpose of this invention is to provide an adaptive addition system for curing agents of phosphogypsum-based filling materials to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] An adaptive addition system for curing agents of phosphogypsum-based fillers includes:

[0011] A mixing tank body is used to hold the mixed materials. A feeding port is opened at the top of the mixing tank body, and a discharge port is opened on the bottom side of the mixing tank body. A discharge ball valve is installed at the discharge port.

[0012] A stirring mechanism, mounted on a mixing tank, is used to stir the mixture inside the tank. The stirring mechanism is also equipped with a moisture content sensor for monitoring the moisture content of the materials.

[0013] A weighing and feeding mechanism is provided, located at the top opening of the mixing tank. The mechanism includes support platforms, weighing sensors, and material supports. A pair of support platforms are fixedly connected to both sides of the mixing tank. Four weighing sensors are symmetrically mounted on the support platforms on both sides. The material supports are placed on the weighing sensors, thereby weighing both the material supports and the material to be fed.

[0014] The material support platform is a hollow eccentric frustum structure with a larger top and a smaller bottom. An eccentric discharge port is provided at the bottom of the material support platform. A flat-nozzle discharge head is also fixedly connected to the material support platform at the bottom of the eccentric discharge port. The flat-nozzle discharge head faces the tangent of the rotation trajectory of the stirring mechanism. An opening and closing flap is also provided inside the eccentric discharge port.

[0015] Preferably, the stirring mechanism includes a stirring connecting rod that is fixedly and rotatably mounted at the axis of the stirring tank. Two sets of propeller-type stirring blades and anchor-type stirring blades are fixedly mounted on the stirring connecting rod. The propeller-type stirring blades are spaced apart above the stirring connecting rod, and the anchor-type stirring blades are symmetrically mounted on the stirring connecting rod below.

[0016] Preferably, each set of propulsion stirring blades includes three blades arranged in a ring array, each blade having a settling groove, the moisture content sensor being embedded in the settling groove, and each moisture content sensor being led outwards through a sensor wire and connected to the control box.

[0017] Preferably, the stirring rod has a hollow channel for arranging sensor wires, and the sensor wires are led out from the lower end of the stirring rod.

[0018] Preferably, a motor mounting bracket is also fixedly installed at the bottom of the mixing tank, and a geared mixing motor is fixedly installed on the motor mounting bracket. The output shaft of the geared mixing motor is connected to a mixing connecting rod extending outward from the bottom of the mixing tank.

[0019] Preferably, the opening and closing flap is driven by a flipping motor installed inside the material support platform to perform opening and closing flipping movements.

[0020] Preferably, a lifting frame is also fixedly installed at the bottom of the mixing tank.

[0021] Preferably, four sets of conveying pipes are provided above the material support platform. The four sets of conveying pipes are respectively connected to the raw material silo. Each conveying pipe is equipped with a quantitative feeding device, which is a pneumatic butterfly valve or a screw feeder mechanism. A quantitative amount of material is fed into the material support platform through the pneumatic butterfly valve or screw feeder mechanism.

[0022] Preferably, a side sealing sleeve is provided in the gap between the material support platform and the mixing tank body, a top sealing sleeve is provided above the material support platform, and the outlet end of the conveying pipe is located inside the top sealing sleeve.

[0023] Preferably, a PLC controller is also installed on the side of the mixing tank, and the PLC controller is electrically connected to the weighing sensor, the moisture content sensor, the geared mixing motor, the tilting motor, and the quantitative feeding device.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] 1. This utility model, by setting a moisture content sensor on the stirring mechanism, can detect the moisture content of the material in real time. Combined with the setting of the quantitative feeding mechanism, it can automatically adjust the moisture content of the stirred material without manual intervention.

[0026] 2. This utility model uses a material support platform to receive all materials, so only one weighing mechanism needs to be designed to weigh and unload all materials, simplifying the design of the weighing structure.

[0027] 3. The material support platform of this utility model discharges materials through a flat-nozzle discharge head set at the bottom. The flat-nozzle discharge head faces the tangent of the rotation trajectory of the mixing mechanism, thus ensuring the feeding angle of all materials and preventing the agglomeration of materials during the feeding process, thereby fully ensuring the uniformity of mixing.

[0028] This invention features a moisture content sensor on the mixing mechanism, which can automatically adjust the moisture content of the materials being mixed. A set of weighing mechanisms can weigh and feed all materials, and ensure the correct feeding angle for all materials, thereby preventing agglomeration during the feeding process and ensuring the uniformity of mixing. Attached Figure Description

[0029] Figure 1 This is a partial cross-sectional view of the present invention;

[0030] Figure 2 This is an exploded view of the overall structure of this utility model;

[0031] Figure 3 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0032] Figure 4 This is a schematic diagram of the material support platform connection structure of this utility model;

[0033] Figure 5 This is a partial cross-sectional schematic diagram of the material support platform and its connecting structure of this utility model;

[0034] Figure 6 This is a schematic diagram of the stirring rod connection structure of this utility model.

[0035] In the diagram: 1. Mixing tank body, 2. Discharge port, 3. Discharge ball valve, 4. Moisture content sensor, 5. Support platform, 6. Weighing sensor, 7. Material support platform, 8. Flat nozzle discharge head, 9. Opening and closing flap, 10. Mixing rod, 11. Propeller mixing blade, 12. Anchor mixing blade, 13. Blade, 14. Hollow channel, 15. Motor assembly frame, 16. Geared mixing motor, 17. Lifting frame, 18. Conveying pipe, 19. Side sealing sleeve, 20. Top sealing sleeve, 21. Eccentric discharge port. Detailed Implementation

[0036] 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.

[0037] Please see Figure 1-6 This utility model provides a technical solution:

[0038] Example 1:

[0039] An adaptive addition system for curing agents of phosphogypsum-based fillers includes:

[0040] The mixing tank 1 is used to carry the mixed materials. A feeding port is provided on the top of the mixing tank 1, and a discharge port 2 is provided on the bottom side of the mixing tank 1. A discharge ball valve 3 is installed at the discharge port 2.

[0041] A stirring mechanism is installed on the mixing tank 1 to stir the mixture inside the tank. The stirring mechanism is also equipped with a moisture content sensor 4 to monitor the moisture content of the materials; and...

[0042] A weighing and feeding mechanism is located at the top opening of the mixing tank 1. The mechanism includes support platforms 5, weighing sensors 6, and material support platforms 7. A pair of support platforms 5 are fixedly connected to both sides of the mixing tank 1. Four weighing sensors 6 are symmetrically installed on the support platforms 5 on both sides. The material support platforms 7 are placed on the weighing sensors 6, thereby weighing the material support platforms 7 and the material to be fed.

[0043] The material support platform 7 is a hollow eccentric cone structure with a larger top and a smaller bottom. An eccentric discharge port 21 is provided at the bottom of the material support platform 7. A flat-nozzle discharge head 8 is also fixedly connected to the material support platform 7 at the bottom of the eccentric discharge port 21. The flat-nozzle discharge head 8 faces the tangent of the rotation trajectory of the stirring mechanism. An opening and closing flap 9 is also provided inside the eccentric discharge port 21.

[0044] In this embodiment, the mixing tank 1 serves as the main supporting structure. It has a feeding port at the top for material input and a discharge port on the bottom side, controlled by a discharge ball valve 3. An mixing mechanism is installed inside the mixing tank 1, and a moisture content sensor 4 is mounted on this mechanism to detect the moisture content of the material. A weighing and discharging mechanism is located above the feeding port. Specifically, the weighing and discharging mechanism includes a support platform 5, weighing sensors 6, and a material support platform 7. The support platform 5 houses the weighing sensors 6 and supports the material support platform 7, which is movably mounted on the weighing sensors 6. The material is weighed using four weighing sensors 6. This structure is similar to a common weighing scale structure in the prior art. The material support platform 7 is a hollow eccentric cone structure with a larger top and a smaller bottom, designed to support the material to be weighed. An eccentric discharge port 21 is located at the bottom of the platform, through which the material enters the flat-nozzle discharge head 8 below. This flat-nozzle discharge head 8 faces the tangent of the rotation trajectory of the mixing mechanism and is tilted at a 75° angle to the horizontal. This ensures that the material falling into the mixing tank 1 follows the tangent of the rotation trajectory of the mixing mechanism. This design facilitates thorough mixing and effectively prevents clumping during the feeding process. Since the material support platform 7 supports and weighs all materials, only one weighing mechanism is needed. All materials fall through the same eccentric discharge port 21, ensuring that the feeding angle of all materials is the same and guaranteeing uniform mixing.

[0045] Example 2:

[0046] The stirring mechanism includes a stirring rod 10 that is fixedly and rotatably mounted at the center of the stirring tank 1. Two sets of propeller-type stirring blades 11 and anchor-type stirring blades 12 are fixedly mounted on the stirring rod 10. The propeller-type stirring blades 11 are spaced above the stirring rod 10, and the anchor-type stirring blades 12 are symmetrically mounted on the stirring rod 10 below.

[0047] Each set of propulsion stirring blades 11 includes three blades 13 arranged in a ring array. Each blade 13 has a settling groove, and a moisture content sensor 4 is embedded in the settling groove. Each moisture content sensor 4 is led out through a sensor wire and connected to the control box.

[0048] A hollow channel 14 is provided inside the stirring rod 10 for arranging sensor wires, and the sensor wires are led out from the lower end of the stirring rod 10.

[0049] A motor mounting bracket 15 is also fixedly installed at the bottom of the mixing tank 1. A geared mixing motor 16 is fixedly installed on the motor mounting bracket 15. The output shaft of the geared mixing motor 16 is connected to the mixing connecting rod 10 extending outward from the bottom of the mixing tank 1.

[0050] In this embodiment, the specific structure of the stirring mechanism is further disclosed, as shown in the appendix to the specification. Figure 6The stirring rod 10 is equipped with two sets of propeller-type stirring blades 11 and anchor-type stirring blades 12, which facilitates thorough mixing of materials. The anchor-type stirring blades 12 at the bottom prevent material from clumping and settling. Each blade 13 of the propeller-type stirring blades 11 has a groove, and the moisture content sensor 4 is fixedly installed in this groove. Therefore, the stirring mechanism has six moisture content sensors 4, distributed on the propeller-type stirring blades 11 at different heights, enabling more accurate detection of the material's moisture content. The six moisture content sensors 4 extend outwards via sensor wires. Therefore, a hollow channel 14 is created inside the stirring rod 10 to facilitate the integration and outward extension of the wiring harness. Since the stirring rod 10 rotates at high speed during mixing, it is necessary to ensure that the wiring harness does not become entangled. To ensure the outward transmission of the signal from the wiring harness, a cable slip ring needs to be installed at the bottom of the stirring rod 10. The rotor end of this cable slip ring rotates with the shaft, and the connector end of the sensor wire is located at the rotor end of the cable slip ring. The stator end of the cable slip ring is sleeved outside the rotor end. The electrical signal of the corresponding moisture content sensor 4 is transmitted outward through the electrical contact between the stator end and the rotor end. The stator end of the cable slip ring is connected to the control box, thereby realizing the normal transmission of the moisture content sensor 4 signal. In this embodiment, the driving mechanism of the stirring tank 1 is further disclosed. The rotation of the reduction stirring motor 16 drives the stirring rod 10 to rotate on a fixed axis, thereby realizing the uniform stirring of the material. A lifting frame 17 is also fixedly installed at the bottom of the stirring tank 1, so that the bottom of the stirring tank 1 has reserved installation space for the reduction stirring motor 16.

[0051] Example 3:

[0052] The opening and closing flap 9 is driven by a flipping motor installed inside the material support platform 7 to perform opening and closing flipping movements.

[0053] Four sets of conveying pipes 18 are installed above the material support platform 7. The four sets of conveying pipes 18 are connected to the raw material silo respectively. Each conveying pipe 18 is equipped with a quantitative feeding device, which is a pneumatic butterfly valve or a screw feeder mechanism. A quantitative amount of material is fed into the material support platform 7 through the pneumatic butterfly valve or screw feeder mechanism.

[0054] In this embodiment, a feeding mechanism is further disclosed in the bottom of the material support platform 7 and the corresponding feeding pipe 18. The bottom of the material support platform 7 is provided with an opening and closing flap 9. When the material needs to be weighed, the opening and closing flap 9 is in a horizontal state, thereby closing the eccentric feeding port 21. During the material weighing process, the stirring rod 10 needs to stop rotating to ensure the accuracy of the weighing process. Before each weighing, the weight of the material support platform 7 needs to be removed, which is the tare setting used in electronic scales in daily life, to ensure the accuracy of the weighing process. After the weighing and feeding are completed, the opening and closing flap 9 is flipped 90°. At this time, the material falls into the stirring tank 1 through the flat nozzle feeding head 8 under its own weight. In the feeding mechanism of the feeding pipe 18 disclosed in this embodiment, the pneumatic butterfly valve or the screw feeder mechanism are common quantitative feeding mechanisms in the prior art, which will not be described in detail here. At the same time, other autonomous quantitative feeding mechanisms can also be used as substitutes.

[0055] Example 4:

[0056] A side sealing sleeve 19 is provided in the gap between the material support platform 7 and the mixing tank body 1. A top sealing sleeve 20 is provided above the material support platform 7. The outlet end of the conveying pipe 18 is located inside the top sealing sleeve 20.

[0057] In this embodiment, in order to prevent dust from escaping during the feeding process, side sealing sleeves 19 and top sealing sleeves 20 are respectively provided above and below the material support platform 7, so as to ensure the sealing of the internal and external environment when the material enters the material support platform 7 or the mixing tank 1, thereby ensuring the cleanliness of the working environment.

[0058] Example 5:

[0059] A PLC controller is also installed on the side of the mixing tank 1. The PLC controller is electrically connected to the weighing sensor 6, the moisture content sensor 4, the geared mixing motor 16, the tilting motor, and the quantitative feeding device.

[0060] In this embodiment, the various electrical components mentioned above are connected through a PLC controller, enabling the PLC controller to perform autonomous feeding, weighing, and stirring operations. Compared with the manual operation method in the prior art, this reduces the human burden and ensures the controllability of the moisture content during the material stirring process.

[0061] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A phosphogypsum-based backfill material curing agent self-adapting addition system, characterized in that, include: A mixing tank body is used to hold the mixed materials. A feeding port is opened at the top of the mixing tank body, and a discharge port is opened on the bottom side of the mixing tank body. A discharge ball valve is installed at the discharge port. A stirring mechanism, mounted on a mixing tank, is used to stir the mixture inside the tank. The stirring mechanism is also equipped with a moisture content sensor for monitoring the moisture content of the materials. A weighing and feeding mechanism is provided, located at the top opening of the mixing tank. The mechanism includes support platforms, weighing sensors, and material supports. A pair of support platforms are fixedly connected to both sides of the mixing tank. Four weighing sensors are symmetrically mounted on the support platforms on both sides. The material supports are placed on the weighing sensors, thereby weighing both the material supports and the material to be fed. The material support platform is a hollow eccentric frustum structure with a larger top and a smaller bottom. An eccentric discharge port is provided at the bottom of the material support platform. A flat-nozzle discharge head is also fixedly connected to the material support platform at the bottom of the eccentric discharge port. The flat-nozzle discharge head faces the tangent of the rotation trajectory of the stirring mechanism. An opening and closing flap is also provided inside the eccentric discharge port.

2. The phosphogypsum-based backfill material curing agent self-adapting addition system according to claim 1, characterized in that: The stirring mechanism includes a stirring connecting rod that is fixedly and rotatably installed at the axis of the stirring tank. Two sets of propeller-type stirring blades and anchor-type stirring blades are fixedly installed on the stirring connecting rod. The propeller-type stirring blades are installed at intervals above the stirring connecting rod, and the anchor-type stirring blades are symmetrically installed on the stirring connecting rod below.

3. The self-adapting additive system for a phosphogypsum-based backfill material curing agent according to claim 2, characterized in that: Each set of propulsion stirring blades includes three blades arranged in a ring array. Each blade has a settling groove, and the moisture content sensor is embedded in the settling groove. Each moisture content sensor is led out through a sensor wire and connected to the control box.

4. The phosphogypsum-based backfill material curing agent self-adapting addition system according to claim 3, characterized in that: The stirring rod has a hollow channel for arranging sensor wires, and the sensor wires are led out from the lower end of the stirring rod.

5. A phosphogypsum-based backfill material curing agent self-adapting addition system according to claim 4, characterized in that: A motor mounting bracket is also fixedly installed at the bottom of the mixing tank. A geared mixing motor is fixedly installed on the motor mounting bracket. The output shaft of the geared mixing motor is connected to a mixing rod extending outward from the bottom of the mixing tank.

6. A phosphogypsum-based backfill material curing agent self-adapting addition system according to claim 5, characterized in that: The opening and closing flap is driven by a flipping motor installed inside the material support platform to perform opening and closing flipping movements.

7. A phosphogypsum-based backfill material curing agent self-adapting addition system according to claim 6, characterized in that: A lifting frame is also fixedly installed at the bottom of the mixing tank.

8. A phosphogypsum-based backfill material curing agent self-adapting addition system according to claim 7, characterized in that: Four sets of conveying pipes are installed above the material support platform. Each of the four sets of conveying pipes is connected to the raw material silo. Each conveying pipe is equipped with a quantitative feeding device, which is a pneumatic butterfly valve or a screw feeder mechanism. A quantitative amount of material is fed into the material support platform through the pneumatic butterfly valve or screw feeder mechanism.

9. A phosphogypsum-based backfill material curing agent self-adapting addition system according to claim 8, characterized in that: A side sealing sleeve is provided in the gap between the material support platform and the mixing tank body, and a top sealing sleeve is provided above the material support platform. The outlet end of the conveying pipe is located inside the top sealing sleeve.

10. The phosphogypsum-based backfill material curing agent self-adapting addition system according to claim 9, characterized in that: A PLC controller is also installed on the side of the mixing tank. The PLC controller is electrically connected to the weighing sensor, moisture content sensor, geared mixing motor, tilting motor and quantitative feeding device.

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