A phosphogypsum aggregate drying device for producing a phosphogypsum water stable layer
By designing a phosphogypsum aggregate drying device with a conveyor belt, drying tunnel, heating and blowing pipes and air curtain, the problem of deterioration and caking of phosphogypsum aggregate caused by increased humidity during storage was solved, achieving stable conveying and efficient and uniform drying.
Patent Information
- Application Number
- CN202423310943.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-31
AI Technical Summary
During the production of phosphogypsum water-stabilized layers, the granulated phosphogypsum aggregate cannot be stored directly due to increased humidity, and is prone to deterioration and caking, requiring drying treatment.
A phosphogypsum aggregate drying device was designed, which includes a conveyor belt, a drying tunnel, a heating device, an air blowing pipe, and an air curtain device. The side barriers and strip protrusions on the conveyor belt prevent slippage and rolling. The heating pipe and cooling fan provide the heat source. The air blowing pipe turns the aggregate over. The air curtain device reduces heat loss. The observation window facilitates monitoring of the drying process.
It achieves stable conveying and uniform drying of phosphogypsum aggregate, prevents deterioration and caking, improves drying efficiency and energy utilization, and facilitates operation and maintenance.
Smart Images
Figure CN223610538U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to phosphogypsum water stable layer production technical field especially a kind of phosphogypsum aggregate drying device for producing phosphogypsum water stable layer. BACKGROUND
[0002] When producing large-mixing amount phosphogypsum water stable layer, currently, phosphogypsum powder is granulated, and then used as the main material of water stable layer, so that the stability, hardness and strength of phosphogypsum aggregate can be improved, thereby improving the stability of water stable layer. The granulation process of phosphogypsum powder uses a disc granulator. Water mist is sprayed into the disc during continuous rotation of the disc to improve the efficiency and balling rate of granulation. However, this process causes the humidity of phosphogypsum aggregate to increase, so that the phosphogypsum aggregate after granulation cannot be directly stored, and needs to be dried before storage to prevent moisture from causing deterioration, hardening and other problems. SUMMARY
[0003] The utility model provides a kind of phosphogypsum aggregate drying device for producing phosphogypsum water stable layer, and the phosphogypsum aggregate after granulation is dried to prevent deterioration and hardening caused by moisture during storage.
[0004] To solve the above technical problems, the utility model adopts the following technical scheme: a kind of phosphogypsum aggregate drying device for producing phosphogypsum water stable layer, including conveying belt, is equipped with drying channel on conveying belt, is equipped with feed cylinder and guide plate on the feed end of conveying belt.
[0005] Preferably, the two sides of the conveying belt are provided with a fixed plate, a lifting block is sleeved on the fixed plate, and a guide plate is fixedly connected between the two lifting blocks.
[0006] Preferably, a plurality of heating devices are arranged in the drying channel, the heating device includes an electric heating pipe, and a cooling fan is arranged above the electric heating pipe.
[0007] Preferably, the strip-shaped protrusion is in triangular structure, and a blowing pipe is further arranged in the drying channel, a gas injection port is arranged on the blowing pipe, the gas injection port faces the conveying belt, and is used for stirring the phosphogypsum aggregate by using air power.
[0008] Preferably, the feed end and the discharge end of the drying channel are provided with air curtain devices.
[0009] Preferably, an observation window is arranged on the side wall of the drying channel.
[0010] Preferably, the side wall of the drying channel adopts a double-layer structure, and a support rod is arranged in the cavity of the double-layer structure for supporting and fixing.
[0011] The utility model provides a kind of for producing phosphogypsum water stable layer's phosphogypsum aggregate drying device, with following beneficial effects:
[0012] 1, prevent aggregate sliding roll: the side edge of the both sides of conveyer belt is set, can effectively prevent phosphogypsum aggregate from sliding in the transmission process;The strip protrusion set on surface, especially the strip protrusion of triangular structure, can prevent phosphogypsum aggregate from rolling, and guarantee the stable transmission of aggregate in drying process.
[0013] 2, flexible material guide: the fixed plate of the both sides of conveyer belt is set with lifting block, and the material guide plate is fixedly connected between two lifting blocks, which makes the position of material guide plate flexible adjustment, and facilitates material guide according to actual demand.
[0014] 3, high efficiency drying: a plurality of heating devices comprising electric heating pipe and heat dissipation fan are arranged in drying channel, heating pipe provides heat source, and heat dissipation fan promotes uniform distribution of heat, improves drying efficiency;The air blowing pipe in drying channel sprays air through air outlet towards conveyer belt, which can use air power to turn over phosphogypsum aggregate, so that each part of aggregate is evenly heated, and drying effect is further improved.
[0015] 4, optimize drying environment: air curtain device is arranged at the inlet end and outlet end of drying channel, which can reduce air exchange inside and outside drying channel, maintain temperature stability in drying channel, save energy and improve drying quality.
[0016] 5, convenient to observe and maintain: observation window is arranged on the side wall of drying channel, so that staff can observe drying condition in drying channel at any time, and problems can be found in time;The side wall of drying channel adopts double-layer structure, and is supported and fixed by support rod, which enhances the stability of drying channel structure, is beneficial to long-term use and maintenance of device. BRIEF DESCRIPTION OF DRAWINGS
[0017] The utility model will be further described in connection with the drawings and examples:
[0018] Figure 1 It is the structure schematic diagram of the utility model;
[0019] Figure 2 It is Figure 1 The enlarged structure schematic diagram of place A in it;
[0020] Figure 3 It is the internal structure schematic diagram of the utility model;
[0021] Figure 4 It is Figure 3 The enlarged structure schematic diagram of place B in it;
[0022] Figure 5 It is the structure schematic diagram of drying channel of the utility model. DETAILED DESCRIPTION
[0023] As Figures 1-2 shown, a phosphogypsum aggregate drying device for producing phosphogypsum water stable layer, comprising a conveying belt 1, an oven channel 2 is arranged on the conveying belt 1, an inlet cylinder 3 is arranged at the inlet end of the conveying belt 1, and a guide plate 4 is arranged; the two sides of the conveying belt 1 are provided with side edge fences 5 for preventing the phosphogypsum aggregate from sliding, and strip-shaped protrusions 6 are arranged on the surface of the conveying belt 1 for preventing the phosphogypsum aggregate from rolling.
[0024] Preferably, the two sides of the conveying belt 1 are provided with fixed plates 7, the lifting blocks 8 are sleeved on the fixed plates 7, and the guide plate 4 is fixedly connected between the two lifting blocks 8.
[0025] Preferably, as Figure 3 shown, a plurality of heating devices are arranged in the oven channel 2, the heating device comprises an electric heating pipe 9, and a heat dissipation fan 10 is arranged above the electric heating pipe 9.
[0026] Preferably, as Figure 4 shown, the strip-shaped protrusion 6 is in a triangular structure, and a blowing pipe 11 is further arranged in the oven channel 2, and a gas injection port 12 is arranged on the blowing pipe 11, the gas injection port 12 faces the conveying belt 1, and is used for using wind power to stir the phosphogypsum aggregate.
[0027] Preferably, the inlet end and the outlet end of the oven channel 2 are provided with air curtain devices 13.
[0028] Preferably, the sidewall of the oven channel 2 is provided with an observation window 14.
[0029] Preferably, as Figure 5 shown, the sidewall of the oven channel 2 adopts a double-layer structure, and a support rod 15 is used for supporting and fixing in the cavity of the double-layer structure.
[0030] Start the drying device, the conveying belt 1 starts to run smoothly at a set speed, the inlet cylinder 3 starts to receive the phosphogypsum aggregate conveyed from the disc granulator, and the aggregate is uniformly distributed on the conveying belt under the guidance of the guide plate 4.
[0031] The electric heating pipe 9 in the oven channel 2 is powered and heated, and the heat dissipation fan 10 is started synchronously to uniformly distribute heat in the internal space of the oven channel, and the phosphogypsum aggregate on the conveying belt is preliminarily dried. With the movement of the phosphogypsum aggregate on the conveying belt, the blowing pipe 11 starts to work, the wind power sprayed from the gas injection port 12 acts on the aggregate, so that the aggregate is constantly stirred, the heat air can fully contact each surface of each aggregate, and the drying effect and uniformity are further improved. The air curtain device 13 continuously runs to form an air curtain at the inlet end and the outlet end of the oven channel 2, effectively reduces the air convection between the inside and outside of the oven channel, maintains the temperature stability of the inside of the oven channel, reduces the heat loss, and improves the energy utilization efficiency.
[0032] According to the humidity, yield and required drying degree of the phosphogypsum aggregate, the running speed of the conveyor belt 1 is adjusted through the control panel. If the aggregate humidity is relatively large, the conveyor belt speed can be appropriately reduced to make the aggregate stay in the drying channel for a longer time to fully dry; if the yield demand is high and the aggregate humidity is relatively low, the conveyor belt speed can be appropriately increased. At the same time, the heating power of the electric heating pipe 9 is adjusted according to the actual drying situation. When it is necessary to quickly improve the drying efficiency, the heating power can be increased; and when the drying target is approached, the heating power is appropriately reduced to avoid excessive drying, which causes energy waste and damage to the quality of the aggregate. During the drying process, the workers closely observe the drying state of the phosphogypsum aggregate in the drying channel through the observation window 14, such as color change, surface drying degree, etc., so as to timely adjust the drying parameters.
[0033] The phosphogypsum aggregate drying device of the present patent has outstanding advantages. The side edges of the conveyor belt are surrounded by barriers and strip-shaped protrusions to prevent the aggregate from sliding and rolling; the lifting guide plate facilitates material guiding. The heating device in the drying channel and the blowing pipe cooperate to make the drying efficient and uniform. The air curtain device can reduce air exchange, maintain the temperature stability in the drying channel, and save energy. The side wall observation window is convenient for checking the drying condition, and the double-layer structure of the side wall supported by the supporting rod ensures the stability of the device. The whole device is helpful for efficiently and stably drying the phosphogypsum aggregate.
[0034] The above-mentioned embodiments are only preferred technical solutions of the present application, and should not be regarded as limiting the present application. The protection scope of the present application should be based on the technical solutions recited in the claims, including equivalent replacement solutions of the technical features recited in the claims. That is, equivalent replacement improvements within this range are also within the protection scope of the present application.
Claims
1. A phosphogypsum aggregate drying device for producing a phosphogypsum water stable layer, comprising a conveying belt (1), an oven (2) is arranged on the conveying belt (1), characterized in that: The feeding end of the conveying belt (1) is provided with a feeding cylinder (3) and a guide plate (4); the two sides of the conveying belt (1) are provided with side edge fences (5) for preventing the phosphogypsum aggregate from sliding; and the surface of the conveying belt (1) is provided with strip-shaped protrusions (6) for preventing the phosphogypsum aggregate from rolling.
2. The phosphogypsum aggregate drying device for producing a water stable layer of phosphogypsum according to claim 1, characterized in that: The two sides of the conveying belt (1) are provided with fixed plates (7), the fixed plates (7) are sleeved with lifting blocks (8), and the two lifting blocks (8) are fixedly connected with the guide plate (4).
3. The phosphogypsum aggregate drying device for producing a water stable layer of phosphogypsum according to claim 1, characterized in that: The drying channel (2) is provided with a plurality of groups of heating devices, the heating devices comprise electric heating pipes (9), and the drying channel (2) is provided with heat dissipation fans (10) above the electric heating pipes (9).
4. The phosphogypsum aggregate drying device for producing a water stable layer of phosphogypsum according to any one of claims 1-3, characterized in that: The strip-shaped protrusions (6) are triangular structures, the drying channel (2) is further provided with a blowing pipe (11), the blowing pipe (11) is provided with a gas injection port (12), the gas injection port (12) faces the conveying belt (1), and the gas injection port (12) is used for turning over the phosphogypsum aggregate by using wind power.
5. The phosphogypsum aggregate drying device for producing a water stable layer of phosphogypsum according to claim 1, characterized in that: The feeding end and the discharging end of the drying channel (2) are provided with air curtain devices (13).
6. The phosphogypsum aggregate drying device for producing a water stable layer of phosphogypsum according to claim 1, characterized in that: The sidewall of the drying channel (2) is provided with an observation window (14).
7. The phosphogypsum aggregate drying device for producing a water stable layer of phosphogypsum according to claim 1, characterized in that: The sidewall of the drying channel (2) adopts a double-layer structure, and the cavity of the double-layer structure is supported and fixed by support rods (15).