Phosphogypsum-based self-compacting fluid soil on-site mixing production system

Abstract

The utility model provides a phosphogypsum-based self-compacting flow-state soil on-site mixing production system which comprises a phosphogypsum crushing device, a building spoil primary crushing device, a phosphogypsum wet grinding device, a powder feeding device and a flow-state soil mixing device, a discharge port of the phosphogypsum crushing device is communicated with a feed port of the phosphogypsum wet grinding device, and a discharge port of the powder feeding device is communicated with a discharge port of the flow-state soil mixing device. A discharging port of the phosphogypsum wet grinding device is communicated with a first feeding port of the flow-state soil mixing device, the building spoil primary breaking device is communicated with a second feeding port of the flow-state soil mixing device, and the powder feeding device is communicated with a third feeding port of the flow-state soil mixing device. According to the phosphogypsum-based self-compacting fluid soil on-site mixing production system provided by the utility model, the phosphogypsum is subjected to a primary crushing and wet grinding process, so that compared with a screening technology in the prior art, 100% comprehensive utilization of the phosphogypsum can be realized, and in addition, a cementing material formed after primary crushing and wet grinding is stable in curing performance and can effectively wrap clay, so that the utilization rate of the phosphogypsum is improved. And the formed self-compacting fluid soil is stable in performance.

Description

Technical Field

[0001] The utility model relates to the technical field of phosphogypsum processing equipment, in particular to a phosphogypsum-based self-compacting fluidized soil on-the-spot mixing production system. Background Art

[0002] As an industrial by-product, phosphogypsum has a large stockpile volume, occupies land, and poses a potential pollution hazard to the Yangtze River water environment. Construction waste soil has been solidified as fluidized soil backfill in engineering projects to achieve soil reuse, and there are many engineering applications. This article provides a ready-mixed production process for preparing self-compacting fluidized soil using phosphogypsum-based cementitious materials as a curing agent, which simultaneously disposes of industrial solid waste and construction solid waste to achieve resource utilization, but the existing ready-mixed production process for fluidized soil is not suitable for phosphogypsum-based self-compacting fluidized soil.

[0003] CN116023109A discloses an industrial production method of fluidized soil and its production equipment, which uses raw materials that are first classified and screened before pulping. Since phosphogypsum and construction waste have a certain moisture content and the raw materials are in a compacted state, direct screening is inefficient and will also waste a lot of raw materials. Utility Model Content

[0004] The main purpose of the utility model is to provide a phosphogypsum-based self-compacting fluidized soil mixing production system, aiming to improve the utilization rate of phosphogypsum and improve production efficiency at the same time.

[0005] To achieve the above-mentioned purpose, the utility model provides a phosphogypsum-based self-compacting fluidized soil mixing production system, including a phosphogypsum crushing device, a construction waste soil primary crushing device, a phosphogypsum wet grinding device, a powder feeding device and a fluidized soil mixing device, wherein:

[0006] The discharge port of the phosphogypsum crushing device is connected to the feed port of the phosphogypsum wet grinding device, the discharge port of the phosphogypsum wet grinding device is connected to the first feed port of the fluidized soil mixing device, the construction waste primary crushing device is connected to the second feed port of the fluidized soil mixing device, and the powder feeding device is connected to the third feed port of the fluidized soil mixing device.

[0007] Preferably, the phosphogypsum crushing device and the construction waste primary crushing device both adopt roller crushers.

[0008] Preferably, the phosphogypsum crushing device and the construction waste primary crushing device both include a feeding hopper and a crushing chamber connected thereto, a weight sensor is installed on the feeding hopper, a plurality of rollers are installed inside the crushing chamber, and a driving mechanism is connected to the rollers to drive them to crush the phosphogypsum.

[0009] Preferably, the driving mechanism comprises a motor, a transmission wheel and a belt sleeved on an output shaft of the motor and the transmission wheel, and the transmission wheel is connected to a rotating shaft of a roller body to drive the roller body to rotate.

[0010] Preferably, an air cannon is installed on the feeding hopper to prevent material accumulation, and a rotating baffle is installed on the passage between the feeding hopper and the crushing chamber, and the rotating baffle is connected to a hydraulic rod to control the feeding speed.

[0011] Preferably, a plurality of crushing teeth are provided on the roller body, and an elastic member is connected between the roller body and the inner wall of the crushing chamber.

[0012] Preferably, the phosphogypsum wet grinding device comprises a wet grinding machine cylinder and a grinding disc installed in the wet grinding machine cylinder, and the rotating shaft of the grinding disc is connected to the regulating motor through a reducer.

[0013] Preferably, the fluidized soil mixing device comprises a mixing shell and a mixing blade installed inside the mixing shell, and the outlet of the fluidized soil mixing device is connected to a pumping hose through a pressure pump.

[0014] Preferably, the mixing shell is also provided with a feeding port.

[0015] Preferably, an electronic weighing scale is installed at the bottom of the powder feeding device, and the powder feeding device includes a plurality of powder silos arranged in parallel.

[0016] The phosphogypsum-based self-compacting fluidized soil mixing production system proposed in the utility model has the following beneficial effects:

[0017] 1. The process of primary crushing + wet grinding of phosphogypsum can achieve 100% comprehensive utilization of phosphogypsum compared with the existing screening technology. Moreover, the cementitious material formed after primary crushing + wet grinding has stable curing performance and can effectively wrap clay, and the self-compacting fluidized soil formed has stable performance;

[0018] 2. The metering function is set on the primary crushing device of phosphogypsum and construction waste, and the mixing ratio can be adjusted according to the performance requirements of the fluidized soil;

[0019] 3. The ready-mixing process can be constructed on site, thus using construction waste to produce self-compacting fluidized soil in situ;

[0020] 4. This phosphogypsum-based self-compacting fluidized soil mixing production system has the advantages of simple structure, stable operation and easy implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a preferred embodiment of the phosphogypsum-based self-compacting fluidized soil mixing production system of the utility model;

[0022] Figure 2 The utility model is a schematic diagram of the internal structure of a roller crusher in the phosphogypsum-based self-compacting fluidized soil mixing production system.

[0023] In the figure, 1, feeding hopper; 2, hydraulic rod; 3, crushing chamber; 4, conveying wheel; 5, motor; 6, belt; 7, discharge port of roller crusher; 8, conveying pipe; 9, air cannon; 10, rotating baffle; 11, weight sensor; 12, elastic part; 13, water inlet of phosphogypsum wet grinding device; 14, feed inlet of phosphogypsum wet grinding device; 15, wet grinding machine cylinder; 16, regulating motor; 17, reducer; 18, discharge port of phosphogypsum wet grinding device; 19, fluidized soil mixing device; 20, water inlet of fluidized soil mixing device; 21, stirring blade; 22, pressure pump; 23, pumping hose; 24, powder silo; 25, electronic weighing scale; 26, manual feeding port; 27, roller body.

[0024] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] It should be noted that in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] Reference Figure 1 In this preferred embodiment, a phosphogypsum-based self-compacting fluidized soil mixing production system includes a phosphogypsum crushing device, a construction waste primary crushing device, a phosphogypsum wet grinding device, a powder feeding device and a fluidized soil mixing device 19, wherein:

[0028] The discharge port of the phosphogypsum crushing device is connected to the feed port of the phosphogypsum wet grinding device (the discharge port of the phosphogypsum crushing device is connected to the inlet of the phosphogypsum wet grinding device through the conveying pipe 8), the discharge port 18 of the phosphogypsum wet grinding device is connected to the first feed port of the fluidized soil mixing device 19, the construction waste primary crushing device is connected to the second feed port of the fluidized soil mixing device 19, and the powder feeding device is connected to the third feed port of the fluidized soil mixing device 19.

[0029] Specifically, the phosphogypsum crushing device and the construction waste primary crushing device both use roller crushers. This embodiment proposes a specific structure, that is, the phosphogypsum crushing device and the construction waste primary crushing device both include a feeding hopper 1 and a crushing chamber 3 connected thereto, a weight sensor 11 is installed on the feeding hopper 1, and a plurality of rollers 27 are installed inside the crushing chamber 3, and a driving mechanism is connected to the rollers 27 to drive them to crush the phosphogypsum.

[0030] Specifically, in this embodiment, the driving mechanism includes a motor 5, a transmission wheel 4, and a belt 6 sleeved on the output shaft of the motor 5 and the transmission wheel 4. The transmission wheel 4 is connected to the rotating shaft of a roller body 27 to drive it to rotate. A frame is arranged outside the crushing chamber 3, the crushing chamber 3 is supported on the frame, and the motor 5 and the transmission wheel 4 are also fixed on the frame and located outside the crushing chamber 3.

[0031] Furthermore, an air cannon 9 is installed on the feeding hopper 1 to prevent material accumulation, and a rotating baffle 10 is installed on the passage between the feeding hopper 1 and the crushing chamber 3. The rotating baffle 10 is connected to a hydraulic rod 2 to control the feeding speed. The hydraulic rod 2 can drive the rotating baffle 10 to rotate, thereby adjusting the size of the passage between the feeding hopper 1 and the crushing chamber 3, thereby controlling the feeding speed.

[0032] In this embodiment, refer to Figure 2 , a plurality of crushing teeth are arranged on the roller body 27, and an elastic member 12 (a spring may be used) is connected between the roller body 27 and the inner wall of the crushing chamber 3. Taking two roller bodies 27 as an example, one roller body 27 is used to connect with the transmission wheel 4, and the other roller body 27 is connected with the elastic member 12. The two roller bodies 27 are connected by a connecting mechanism to drive them to rotate together.

[0033] This embodiment proposes a specific structure of a phosphogypsum wet grinding device, which includes a wet grinder cylinder 15 and a grinding disc installed in the wet grinder cylinder 15 , and the rotating shaft of the grinding disc is connected to the regulating motor 16 through a reducer 17 .

[0034] The fluidized soil mixing device 19 includes a mixing shell and a mixing blade 21 installed inside the mixing shell. The outlet of the fluidized soil mixing device 19 is connected to a pumping hose 23 through a pressure pump 22. Furthermore, an inlet is provided on the mixing shell. The inlet is used to feed powder additives and the like.

[0035] Furthermore, an electronic weighing scale 25 is installed at the bottom of the powder feeding device, and the powder feeding device includes a plurality of powder silos 24 arranged in parallel. The powder silos 24 are used to feed powders such as mineral powder and cement.

[0036] The working process of this phosphogypsum-based self-compacting fluidized soil ready-mixed production system is as follows.

[0037] The phosphogypsum is added from the hopper 1, and the feeding speed is controlled by the hydraulic rod 2 and the rotating baffle 10, and the weight sensor 11 is used for metering. The phosphogypsum is crushed under the coordinated operation of the conveying wheel 4, the motor 5 and the elastic member 12, and goes to the wet grinding process from the discharge port 7 of the roller crusher through the conveying pipe 8. The crushed phosphogypsum enters the wet grinding machine cylinder 15 from the feed port 14 of the phosphogypsum wet grinding device. The phosphogypsum wet grinding device adds water through its water inlet, and controls the rotation speed through the reducer 17 and the regulating motor 16 to wet grind the crushed phosphogypsum. After reaching the preset particle size, it enters the fluidized soil mixing device 19 through the discharge port 18 of the ball mill. The soil sample is added to the primary crushing device of construction waste soil from the other side. An air cannon 9 is provided next to the feeding hopper 1 to prevent the accumulation of soil samples. The lower part is provided with a hydraulic rod 22, a rotating baffle 10 and a weight sensor 11 to control the feeding speed and feeding amount. The soil sample is broken under the coordinated operation of the conveying wheel 4, the motor 5 and the elastic member 12, and enters the fluidized soil mixing device 19 after passing through the conveying pipe 8 from the discharge port of the primary crushing device of construction waste soil. The fluidized soil mixing device 19 has a built-in mixing blade 21 and is equipped with a plurality of powder silos 24. The lower part of the powder silo 24 has an electronic weighing scale 25 for feeding mineral powder, cement and other powders, and is equipped with a mixer manual feeding port 26 for feeding powder admixtures. The fluidized soil mixing device 19 stirs the various raw materials added. Finally, the stirred phosphogypsum-based self-compacting fluidized soil is pumped to the designated location through a pressure pump 22 and a pumping hose 23.

[0038] The phosphogypsum-based self-compacting fluidized soil mixing production system proposed in this embodiment has the following beneficial effects:

[0039] 1. The process of primary crushing + wet grinding of phosphogypsum can achieve 100% comprehensive utilization of phosphogypsum compared with the existing screening technology. Moreover, the cementitious material formed after primary crushing + wet grinding has stable curing performance and can effectively wrap clay, and the self-compacting fluidized soil formed has stable performance;

[0040] 2. The metering function is set on the primary crushing device of phosphogypsum and construction waste, and the mixing ratio can be adjusted according to the performance requirements of the fluidized soil;

[0041] 3. The ready-mixing process can be constructed on site, thus using construction waste to produce self-compacting fluidized soil in situ;

[0042] 4. This phosphogypsum-based self-compacting fluidized soil mixing production system has the advantages of simple structure, stable operation and easy implementation.

[0043] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A phosphogypsum-based self-compacting fluidized soil mixing production system, characterized in that: It includes a phosphogypsum crushing device, a construction waste primary crushing device, a phosphogypsum wet grinding device, a powder feeding device and a fluidized soil mixing device, among which: The discharge port of the phosphogypsum crushing device is connected to the feed port of the phosphogypsum wet grinding device, the discharge port of the phosphogypsum wet grinding device is connected to the first feed port of the fluidized soil mixing device, the construction waste primary crushing device is connected to the second feed port of the fluidized soil mixing device, and the powder feeding device is connected to the third feed port of the fluidized soil mixing device.

2. The phosphogypsum-based self-compacting fluidized soil ready-mixing production system according to claim 1, characterized in that: The phosphogypsum crushing device and the construction waste primary crushing device both adopt roller crushers.

3. The phosphogypsum-based self-compacting fluidized soil ready-mixing production system according to claim 1, characterized in that: The phosphogypsum crushing device and the construction waste primary crushing device both include a feeding hopper and a crushing chamber connected thereto. A weight sensor is installed on the feeding hopper. Multiple rollers are installed inside the crushing chamber. A driving mechanism is connected to the rollers to drive them to crush the phosphogypsum.

4. The phosphogypsum-based self-compacting fluidized soil ready-mixing production system according to claim 3, characterized in that: The driving mechanism includes a motor, a transmission wheel, and a belt sleeved on the output shaft of the motor and the transmission wheel. The transmission wheel is connected to the rotating shaft of a roller body to drive the roller body to rotate.

5. The phosphogypsum-based self-compacting fluidized soil ready-mixing production system according to claim 3, characterized in that: An air cannon is installed on the feeding hopper to prevent material from stockpiling, and a rotating baffle is installed on the channel between the feeding hopper and the crushing chamber. The rotating baffle is connected to a hydraulic rod to control the feeding speed.

6. The phosphogypsum-based self-compacting fluidized soil ready-mixing production system according to claim 3, characterized in that: The roller body is provided with a plurality of crushing teeth, and an elastic member is connected between the roller body and the inner side wall of the crushing chamber.

7. The phosphogypsum-based self-compacting fluidized soil ready-mixing production system according to claim 1, characterized in that: The phosphogypsum wet grinding device includes a wet grinding machine cylinder and a grinding disc installed in the wet grinding machine cylinder, and the rotating shaft of the grinding disc is connected to the regulating motor through a reducer.

8. The phosphogypsum-based self-compacting fluidized soil ready-mixing production system according to claim 1, characterized in that: The fluidized soil mixing device comprises a mixing shell and a mixing blade installed inside the mixing shell. The outlet of the fluidized soil mixing device is connected to a pumping hose through a pressure pump.

9. The phosphogypsum-based self-compacting fluidized soil ready-mixing production system according to claim 8, characterized in that: The mixing shell is also provided with an inlet for feeding.

10. The phosphogypsum-based self-compacting fluidized soil ready-mixing production system according to any one of claims 1 to 9, characterized in that: An electronic weighing scale is installed at the lower part of the powder feeding device, and the powder feeding device includes a plurality of powder silos arranged in parallel.

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