A foam pneumatic conveying system
By using a foam pneumatic conveying system, which utilizes fans and pipelines to transport foam, the problems of high cost and large footprint in existing technologies are solved, achieving low-cost, low-footprint, and dust-free continuous conveying.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINYANG JINYU CEMENT
- Filing Date
- 2025-09-30
- Publication Date
- 2026-08-04
AI Technical Summary
Existing foam conveying systems are costly, require a large area, and generate dust.
A foam pneumatic conveying system is adopted, which uses a fan to transport foam through pipelines. Valves are installed to ensure the continuity and flexibility of the conveying process and to avoid blockages during clearing operations.
It reduces the cost of the conveying system, reduces the floor space required, and avoids dust generation by conveying within pipelines, ensuring the continuity of foam conveying.
Smart Images
Figure CN224590208U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of material conveying equipment technology, specifically to a foam pneumatic conveying system. Background Technology
[0002] Foam waste has a wide range of sources, including foam scraps from industrial sectors such as furniture manufacturing, electronic packaging, and automotive interiors, as well as waste foam products from civilian use such as discarded sofas, mattresses, and packaging materials. In recent years, with the cement industry's increasingly urgent need for low-cost, environmentally friendly alternative fuels, foam, due to its certain calorific value and stable source, has been widely used in the cement production process. Specifically, after being crushed and transported, foam is fed into the middle of the decomposition furnace and mixed with tailings coal for combustion, which can effectively replace some traditional fossil fuels (adding 1 ton of foam can replace 0.6 tons of standard coal), significantly reducing the fuel procurement costs of cement companies.
[0003] Currently, most companies use belt conveyors and bucket elevators to transport foam. The belt conveyor is responsible for horizontal or slightly inclined conveying of the foam to the bottom of the bucket elevator, which is responsible for vertical lifting. The bucket elevator lifts the foam vertically to the target height, and the lifted foam is then sent to the decomposition furnace via a screw conveyor. The entire conveying system is costly and occupies a large area. Summary of the Invention
[0004] This invention addresses the problem of existing technologies that mostly use belt conveyors and bucket elevators to transport foam by providing a pneumatic foam conveying system. This system uses wind power to transport foam, resulting in a smaller overall system size and ensuring the continuity of foam transport as much as possible.
[0005] The technical solution of this utility model is: a foam pneumatic conveying system, including hoppers and a blower. The hoppers include hopper one and hopper two. Hopper one is connected to conveying pipeline one, and hopper two is connected to conveying pipeline two. One end of conveying pipeline one and conveying pipeline two are connected to the air outlet of the blower, and the other end is connected to a feeding pipeline. The other end of the feeding pipeline is connected to a decomposition furnace. Valves one are provided on both sides of the connection between hopper one and conveying pipeline one on conveying pipeline one, and valve two is provided on both sides of the connection between hopper two and conveying pipeline two on conveying pipeline two.
[0006] The above solution allows foam to be directly transported into the decomposition furnace by the airflow of the blower, without the need for belt conveyors or bucket elevators. This reduces the cost of the conveying system, and since the entire foam transport takes place within the pipeline, dust generation during transport can be minimized.
[0007] Furthermore, by connecting the blower to both the first conveying pipe connected to hopper one and the second conveying pipe connected to hopper two, and by installing valves one and two on the first and second conveying pipes respectively, when the foam in hopper one becomes clogged, valve one can be closed and valve two opened, allowing the foam to fall and be conveyed from hopper two. At the same time, the foam in hopper one can be cleared of blockages. By repeating this process, the continuity of material conveying can be ensured as much as possible.
[0008] Based on the above solution, the present invention can be further improved as follows:
[0009] Furthermore, both hopper one and hopper two are equipped with unloaders below them.
[0010] Furthermore, the two ends of the first and second conveying pipelines converge and are then connected to the air outlet of the blower and the feeding pipeline, respectively.
[0011] Furthermore, both hopper one and hopper two are supported by a frame and both have a screen on top.
[0012] Furthermore, the feeding pipeline includes a horizontal section and a vertical section. The height of the vertical section is 20 to 30 meters, and the length of the pipeline from the air outlet of the blower to the vertical section is 180 to 210 meters. By setting up a vertical feeding pipeline, it is possible to replace the bucket elevator for vertical feeding, and the continuity of feeding can be ensured by limiting the height of the feeding pipeline.
[0013] Furthermore, the air volume of the fan is at least 1002 m³ / h. 3 / h, air pressure at least 25Kpa, and the diameter of the pipeline is 150mm.
[0014] Furthermore, the blower is a Roots blower, and the unloader is a rotary valve.
[0015] The beneficial effects of this utility model through the above technical solution are as follows:
[0016] Foam can be directly conveyed into the decomposition furnace by the airflow from the blower, eliminating the need for belt conveyors or bucket elevators. This reduces the cost of the conveying system, and since the entire foam conveying process takes place within pipelines, dust generation is minimized. Furthermore, by connecting the blower to both conveying pipeline 1 (connected to hopper 1) and conveying pipeline 2 (connected to hopper 2), and by installing valves 1 and 2 on each pipeline respectively, when foam becomes clogged in hopper 1, valve 1 can be closed and valve 2 opened, allowing foam to fall from hopper 2. This process also clears blockages in hopper 1. By repeating this process, the continuity of foam conveying can be ensured as much as possible. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model.
[0018] The attached diagram is labeled as follows: 1. Hopper, 101. Hopper 1, 102. Hopper 2, 2. Fan, 301. Conveying Pipeline 1, 302. Conveying Pipeline 2, 4. Feeding Pipeline, 401. Horizontal Section, 402. Vertical Section, 501. Valve 1, 502. Valve 2, 6. Unloader, 7. Screen. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:
[0020] like Figure 1 As shown, a foam pneumatic conveying system includes a hopper 1 and a blower 2. The hopper 1 includes a first hopper 101 and a second hopper 102. The first hopper 101 is connected to a first conveying pipeline 301, and the second hopper 102 is connected to a second conveying pipeline 302. One end of the first conveying pipeline 301 and the second conveying pipeline 302 is connected to the air outlet of the blower 2, and the other end is connected to a feeding pipeline 4. The other end of the feeding pipeline 4 is connected to a decomposition furnace. Valves 501 are provided on both sides of the connection between the first hopper 101 and the first conveying pipeline 301, and valves 502 are provided on both sides of the connection between the second hopper 102 and the second conveying pipeline 302.
[0021] In this embodiment, the conveyed foam is mainly dismantled refrigerator insulation material with a calorific value of 7000 kcal / kg. The foam has undergone primary crushing before entering the factory, with a particle size between 0.1 mm and 50 mm and a bulk density of 0.2 t / m³. 3 With virtually zero moisture, the foam can be transported into the decomposition furnace by the airflow of blower 2, eliminating the need for belt conveyors or bucket elevators. This results in high transport efficiency, and the entire transport of the foam occurs within the pipeline, minimizing dust generation. Furthermore, by connecting blower 2 to both conveying pipeline 301 (connected to hopper 101) and conveying pipeline 302 (connected to hopper 202), and by installing valves 501 and 502 on both pipelines, when the foam in hopper 101 becomes clogged, valve 501 can be closed and valve 502 opened, allowing the foam to fall from hopper 202. This also clears blockages in hopper 101. This reciprocating operation ensures the continuity of foam transport.
[0022] As one possible implementation, a discharger 6 is provided below both hopper one 101 and hopper two 102.
[0023] As one possible implementation, the two ends of the first conveying pipeline 301 and the second conveying pipeline 302 converge and are then connected to the air outlet of the blower 2 and the feeding pipeline 4, respectively.
[0024] As one possible implementation, both hopper 101 and hopper 2 102 are supported by a frame (not shown in the frame diagram), and both hopper 101 and hopper 2 102 are equipped with a screen 7 at their top.
[0025] As one possible implementation, the feeding pipeline 4 includes a horizontal section 401 and a vertical section 402. The height of the vertical section 402 is 20 meters to 30 meters. The length of the pipeline from the outlet of the blower 2 to the vertical section 402 (including the pipeline from the outlet of the blower 2 to the first conveying pipeline 301 or the second conveying pipeline 302, the first conveying pipeline 301 or the second conveying pipeline 302, and the horizontal section 401 of the feeding pipeline 4) is 180 meters to 210 meters. By setting up the vertical feeding pipeline 4, it is possible to replace the bucket elevator for vertical feeding, and the continuity of feeding can be ensured by limiting the height of the feeding pipeline 4.
[0026] In this embodiment, the vertical height of the vertical section 402 is 25 meters, and the length of the pipeline from the air outlet of the fan 2 to the vertical section 402 is 195 meters.
[0027] As one possible implementation, the air volume of the fan 2 is at least 1002m³. 3 / h, air pressure at least 25Kpa, and the diameter of the pipeline is 150mm.
[0028] In this embodiment, the blower 2 is a Roots blower with a power of 22kW. The blower 2 can blow out air or inert gas as the conveying medium, and the air volume blown out by the blower 2 is 1002m³. 3 / h, the wind pressure is 25KPa, so that the wind speed in the pipeline can reach 14.4m / s; the unloader 6 is a star-shaped unloader, which has good sealing performance and can prevent the wind in the pipeline from entering the hopper 1 and causing a large amount of dust.
[0029] In this embodiment, when used:
[0030] Open valve 1 501 and close valve 2 502, so that foam is conveyed through hopper 101 and conveying pipeline 301 (it is only necessary to ensure that conveying pipeline 301 and conveying pipeline 302 do not convey foam at the same time when foam is being conveyed. In this embodiment, it is taken that foam is conveyed first by conveying pipeline 301). At this time, the foam in hopper 101 falls into conveying pipeline 301 through unloader 6. Driven by the wind blown by blower 2, the foam in conveying pipeline 301 enters the decomposition furnace through feeding pipeline 4.
[0031] When foam blockage occurs in hopper 101 or when insufficient foam is conveyed by feeding pipe 4, valve 501 is closed and then opened, allowing foam to be conveyed through hopper 2 102 and feeding pipe 2 302. At this time, the foam in hopper 2 102 falls into feeding pipe 2 302 through unloader 6. Driven by the air force of blower 2, the foam in feeding pipe 2 302 enters the decomposition furnace through feeding pipe 4. At the same time, hopper 101 is cleared of blockage (specifically, the screen can be removed and cleared using tools). The same reciprocating operation can be performed to ensure the continuity of foam conveying as much as possible.
[0032] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0033] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Any equivalent or equivalent modifications or substitutions to the technical solutions of the present invention without departing from the spirit of the present invention or the scope of disclosure shall fall within the protection scope of the present invention.
Claims
1. A foam pneumatic conveying system, comprising a hopper (1), characterized in that, It also includes a blower (2), and the hopper (1) includes a hopper one (101) and a hopper two (102). The hopper one (101) is connected to the first conveying pipeline (301), and the hopper two (102) is connected to the second conveying pipeline (302). One end of the first conveying pipeline (301) and the second conveying pipeline (302) is connected to the air outlet of the blower (2), and the other end is connected to the feeding pipeline (4). The other end of the feeding pipeline (4) is connected to the decomposition furnace. Valve 1 (501) is provided on both sides of the connection between the first conveying pipeline (301) and the first hopper (101), and valve 2 (502) is provided on both sides of the connection between the second conveying pipeline (302) and the second hopper (102).
2. The foam pneumatic conveying system according to claim 1, characterized in that, Both hopper one (101) and hopper two (102) are equipped with unloaders (6) below them.
3. The foam pneumatic conveying system according to claim 1, characterized in that, The two ends of the first conveying pipeline (301) and the second conveying pipeline (302) converge and then connect to the air outlet of the blower (2) and the feeding pipeline (4) respectively.
4. The foam pneumatic conveying system according to claim 1, characterized in that, Both hopper one (101) and hopper two (102) are supported by a frame and are equipped with a screen (7) on the top.
5. The foam pneumatic conveying system according to any one of claims 1 to 4, characterized in that, The feeding pipeline (4) includes a horizontal section (401) and a vertical section (402). The height of the vertical section (402) is 20 to 30 meters, and the length of the pipeline from the air outlet of the fan (2) to the vertical section (402) is 180 to 210 meters.
6. The foam pneumatic conveying system according to claim 5, characterized in that, The air volume of the fan (2) is at least 1002m³. 3 / h, air pressure at least 25Kpa, and the diameter of the pipeline is 150mm.
7. The foam pneumatic conveying system according to claim 2, characterized in that, The blower (2) is a Roots blower, and the unloader (6) is a star-shaped unloader.