Pressure relief and dust prevention device for loading and unloading coal ash
By designing a pressure relief and dust prevention device, the dust in fly ash is separated by exhaust ports and dust screens, which solves the problem of dust pollution during the loading and unloading of fly ash, realizes environmentally friendly and safe loading and unloading operations, and reduces material loss and maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGXIA ZHIHENGYUE CONSTRUCTION ENGINEERING CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-05-01
AI Technical Summary
During the loading and unloading of fly ash, the instantaneous release of internal pressure in the tanker truck causes fly ash to spray out, resulting in serious dust pollution, which harms the environment and health, while also causing material waste and increasing production costs.
Design a pressure relief and dust prevention device, including a pressure relief tank, an exhaust port, an ash discharge port, a feed pipe, and a dust screen. Fly ash is introduced into the pressure relief chamber through the feed pipe, dust is intercepted by the dust screen, pressure is released through the exhaust port, and settled fly ash is collected through the ash discharge port, thereby achieving gas-ash separation and reducing dust.
It effectively prevents fly ash from being ejected, reduces dust pollution, improves the environmental friendliness and safety of loading and unloading operations, reduces material loss, and lowers maintenance costs.
Smart Images
Figure CN224185444U_ABST
Abstract
Description
Technical Field
[0001] This utility model specifically relates to a pressure relief and dust prevention device for loading and unloading fly ash, belonging to the field of industrial production technology. Background Technology
[0002] In the field of industrial solid waste treatment, fly ash, as an important byproduct generated during the production processes of coal-fired power plants, is crucial for the comprehensive utilization of resources through efficient transportation and unloading. Currently, the common fly ash loading and unloading process involves: first, pumps are used to transport the fly ash to tank trucks for initial loading; then, the tank trucks transfer the fly ash to containers for secondary loading and unloading. During this process, the tank trucks experience high internal pressure due to pumping pressure and the inherent accumulation characteristics of fly ash. When the tank trucks unload into containers, the instantaneous release of pressure causes a large amount of fly ash to be ejected, leading not only to the disorderly diffusion of fly ash, resulting in severe dust pollution, increasing the concentration of pollutants in the surrounding environment, and harming the respiratory health of on-site workers; but also to material waste, increasing production costs and material loss rates for enterprises. Utility Model Content
[0003] The purpose of this utility model is to address the shortcomings of the existing technology by providing a pressure relief and dust prevention device for loading and unloading fly ash, so as to achieve the purpose of preventing dust pollution during the loading and unloading process of fly ash.
[0004] A pressure relief and dust control device for loading and unloading fly ash includes a pressure relief tank with a pressure relief chamber inside. An exhaust port is provided on the upper side wall of the pressure relief tank, and an ash discharge port is provided on the lower side wall of the pressure relief tank. Both the ash discharge port and the exhaust port are connected to the pressure relief chamber. A feed pipe is connected to the side wall of the pressure relief tank, and the feed pipe has an inlet and an outlet. The inlet of the feed pipe extends to the outside of the pressure relief tank, and the outlet of the feed pipe extends into the pressure relief chamber. A dustproof net is installed inside the pressure relief tank, located within the pressure relief chamber between the feed pipe and the exhaust port.
[0005] Furthermore, the pressure relief tank has an opening at the top, and a tank cover is provided on the top of the pressure relief tank to seal the opening.
[0006] Furthermore, the side wall of the tank cover is provided with a fastener, and the upper part of the side wall of the pressure relief tank is provided with a latch that matches the fastener. The tank cover is fixed to the pressure relief tank by the fastener and the latch cooperating.
[0007] Furthermore, the inner wall of the pressure relief tank is provided with a flange extending radially therefrom, the dustproof net is placed on the top surface of the flange, the bottom surface of the tank cover is provided with a support rod, and the end of the support rod away from the tank cover is connected to a pressure ring, the pressure ring is pressed tightly against the dustproof net.
[0008] Furthermore, there are two pressure relief tanks arranged in a mirror image, and the feed pipe is a three-way pipe structure, with one end of the feed pipe connected to the two pressure relief tanks respectively.
[0009] Furthermore, the pressure relief tank includes a cylindrical section and a conical section, with the conical section integrally formed below the cylindrical section.
[0010] Furthermore, an ash discharge pipe is provided at the port of the ash discharge outlet, and the ash discharge pipe is connected to the ash discharge outlet via a flange.
[0011] Furthermore, the dustproof net has a disc structure with a V-shaped longitudinal section, and the V-shaped opening faces the direction of fly ash flow.
[0012] Beneficial effects:
[0013] 1. This utility model features an exhaust port on the upper side wall and an ash discharge port on the lower side wall of the pressure relief tank. The feed pipe introduces pressurized fly ash into the pressure relief chamber. A dustproof net is located between the feed pipe and the exhaust port, effectively intercepting dust. The exhaust port promptly releases the pressure inside the tank, and the dustproof net intercepts dust, reducing dust discharge with the airflow and preventing fly ash from being sprayed out due to the instantaneous release of pressure during tank truck unloading, thus reducing dust pollution. The ash discharge port facilitates the collection and treatment of settled fly ash, achieving gas-ash separation and ensuring the environmental friendliness and safety of loading and unloading operations.
[0014] 2. In this utility model, the top of the pressure relief tank is open and fitted with a tank cover. The tank cover is fixed to the pressure relief tank by a fastener and a lock, which makes it convenient for operators to open the tank cover to inspect, clean and maintain the inside of the device. The baffle set on the inner wall of the pressure relief tank can support the dustproof net. The support rod on the bottom of the tank cover is connected to the pressure ring. When the tank cover is installed, the pressure ring presses the dustproof net tightly to prevent the dustproof net from shifting or shaking under the impact of airflow, ensuring that it is always in good working condition and improving dustproof efficiency. This structural design also facilitates the disassembly and replacement of the dustproof net, reducing maintenance costs. Attached Figure Description
[0015] Figure 1 This is a front view structural diagram of the present invention;
[0016] Figure 2 This is a schematic diagram of the rear view structure of this utility model;
[0017] Figure 3 This is a side view of the structure of this utility model;
[0018] Figure 4 along Figure 3 A schematic diagram of the cross-sectional structure of the central section AA.
[0019] In the diagram: 1. Pressure relief tank; 2. Ash discharge port; 3. Exhaust port; 4. Feed pipe; 5. Dustproof net; 6. Baffle; 7. Tank lid; 8. Support rod; 9. Pressure ring; 10. Buckle seat; 11. Locking buckle. Detailed Implementation
[0020] 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.
[0021] Please see Figures 1-4 As shown, a pressure relief and dust prevention device for loading and unloading fly ash includes a pressure relief tank 1, which has a pressure relief chamber inside. An exhaust port 3 is provided on the upper side wall of the pressure relief tank 1, and an ash discharge port 2 is provided on the lower side wall of the pressure relief tank 1. Both the ash discharge port 2 and the exhaust port 3 are connected to the pressure relief chamber. A feed pipe 4 is connected to the side wall of the pressure relief tank 1. The feed pipe 4 has an inlet and an outlet. The inlet of the feed pipe 4 extends to the outside of the pressure relief tank 1, and the outlet of the feed pipe 4 extends into the pressure relief chamber. A dustproof net 5 is provided inside the pressure relief tank 1, and the dustproof net 5 is located in the pressure relief chamber between the feed pipe 4 and the exhaust port 3.
[0022] Specifically, during the loading and unloading of fly ash, pressurized fly ash enters through the inlet of the feed pipe 4 and is sprayed into the pressure relief chamber of the pressure relief tank 1 from the outlet. Since the dust screen 5 is located between the feed pipe 4 and the exhaust port 3, the dust carried in the fly ash impacts the dust screen 5 under the action of the airflow. Larger dust particles are intercepted, while smaller dust particles rise with the airflow and are discharged through the exhaust port 3. The fly ash particles, however, sink under gravity and are discharged through the ash discharge port 2. By setting up the pressure relief tank 1 with the exhaust port 3, ash discharge port 2, feed pipe 4, and dust screen 5, pressure relief and preliminary dust prevention functions are achieved during the loading and unloading of fly ash. The exhaust port 3 can promptly release the pressure inside the tank, preventing excessive pressure from causing danger; the ash discharge port 2 facilitates the collection and treatment of settled fly ash; and the dust screen 5 effectively intercepts dust, reducing dust discharge through the exhaust port, lowering dust pollution, and improving the environmental friendliness and safety of the loading and unloading operations.
[0023] As a technical optimization of this utility model, the pressure relief tank 1 has an open top, and a tank cover 7 is also provided on the top of the pressure relief tank 1 to seal the open top.
[0024] Specifically, the pressure relief tank 1 has an opening at the top, which can be sealed by the tank cover 7. The tank cover 7 can be opened during installation, maintenance, or cleaning of the device to facilitate personnel operation and equipment maintenance; when in use, the tank cover 7 is closed to ensure the airtightness of the pressure relief tank 1, preventing internal pressure and dust from leaking from the top.
[0025] As a technical optimization of this utility model, the side wall of the can lid 7 is provided with a buckle 10, and the upper part of the side wall of the pressure relief tank 1 is provided with a lock 11 that is compatible with the buckle 10. The can lid 7 is fixed on the pressure relief tank 1 by the buckle 10 and the lock 11.
[0026] Specifically, the can lid 7 is securely fixed to the pressure relief tank 1 by the cooperation of the buckle 10 and the latch 11. During installation, the buckle 10 and the latch 11 are fastened together; during disassembly, the can lid 7 can be removed by opening the latch 11.
[0027] As a technical optimization of this utility model, a baffle 6 extending radially is provided on the inner wall of the pressure relief tank 1, a dustproof net 5 is placed on the top surface of the baffle 6, a support rod 8 is provided on the bottom surface of the tank cover 7, and a pressure ring 9 is connected to the end of the support rod 8 away from the tank cover 7, and the pressure ring 9 is pressed tightly onto the dustproof net 5.
[0028] Specifically, the dustproof net 5 is placed on the radially extending flange 6 on the inner wall of the pressure relief tank 1 to provide support; the support rod 8 on the bottom of the tank cover 7 is connected to the pressure ring 9. When the tank cover 7 is installed on the pressure relief tank 1, the pressure ring 9 presses the dustproof net 5 tightly, so that the dustproof net 5 is firmly installed in the pressure relief chamber, preventing it from shifting or shaking under the impact of airflow.
[0029] As a technical optimization of this utility model, there are two pressure relief tanks 1 arranged in a mirror image, and the feed pipe 4 is a three-way pipe structure, with one end of the feed pipe 4 connected to the two pressure relief tanks 1 respectively.
[0030] Specifically, during the loading and unloading of fly ash, the fly ash carrying pressure and dust is diverted through the feed pipe 4 into two pressure relief tanks 1, where pressure relief and dust prevention are carried out respectively.
[0031] As a technical optimization of this utility model, the pressure relief tank 1 includes a cylindrical section and a conical section, with the conical section integrally formed below the cylindrical section.
[0032] Specifically, after the fly ash enters the pressure relief tank 1, the cylindrical section provides a large space for pressure release and dust settling, and the conical section design allows the settled fly ash to be more smoothly concentrated towards the ash discharge port 2 for easy discharge.
[0033] As a technical optimization of this utility model, an ash discharge pipe is provided at the port of the ash discharge port 2, and the ash discharge pipe is connected to the ash discharge port 2 through a flange.
[0034] Specifically, during ash discharge, fly ash enters the ash discharge pipe through ash discharge port 2, and is then transported to the designated location by the ash discharge pipe. The flange connection ensures the sealing between the ash discharge pipe and ash discharge port 2, preventing dust leakage.
[0035] As a technical optimization of this utility model, the dustproof net 5 has a disc structure with a V-shaped longitudinal section and the V-shaped opening is oriented towards the fly ash flow direction.
[0036] Specifically, when the fly ash airflow carrying dust impacts the dustproof net 5, the V-shaped structure increases the contact area between the dustproof net and the airflow, making it easier for the dust to be intercepted; at the same time, the V-shaped structure facilitates the intercepted dust to slide to both sides under the action of gravity, avoiding dust accumulation and blockage of the dustproof net.
[0037] Working principle:
[0038] Pressure relief principle: When the tanker truck unloads into the container, the pressurized fly ash enters the pressure relief chamber of the pressure relief tank 1 through the feed pipe 4. Since the upper side wall of the pressure relief tank 1 is equipped with an exhaust port 3, the pressure can be released through the exhaust port 3, avoiding the problem of excessive instantaneous pressure release caused by direct pressure relief at the unloading point.
[0039] Dust prevention principle: The dustproof net 5 is located in the pressure relief chamber between the feed pipe 4 and the exhaust port 3. When the airflow carrying fly ash enters the pressure relief chamber from the feed pipe 4, the dustproof net 5 will intercept the fly ash in the airflow, so that the fly ash particles are blocked on one side of the dustproof net 5, while the gas can be discharged through the pores of the dustproof net 5 and the exhaust port 3, thereby realizing gas-ash separation and preventing fly ash from being discharged from the pressure relief tank 1 with the airflow and causing dust pollution.
[0040] The can lid 7 is fixed to the pressure relief tank 1 by the fastener 10 and the lock 11, which facilitates the maintenance and cleaning of the pressure relief tank 1 and ensures the airtightness of the pressure relief tank 1. The dustproof net 5 is placed on the top surface of the baffle 6, and the support rod 8 and pressure ring 9 on the bottom surface of the can lid 7 are pressed tightly onto the dustproof net 5, so that the dustproof net 5 can be stably installed in the pressure relief tank 1, preventing it from shifting or shaking under the impact of airflow and ensuring the dustproof effect. The ash discharge port 2 on the lower side wall of the pressure relief tank 1 is used to discharge the intercepted fly ash, which facilitates the centralized treatment of the collected fly ash.
[0041] The use of two mirror-shaped pressure relief tanks 1 and a three-way feed pipe 4 can increase the efficiency of pressure relief and dust prevention, while also playing a certain buffering role, further stabilizing the airflow and improving the overall performance of the device. The conical section design of the pressure relief tank 1 is conducive to the better accumulation of fly ash towards the ash discharge port 2 under the action of gravity, which facilitates ash discharge.
[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A pressure relief dust prevention device for coal ash loading and unloading, comprising a pressure relief tank (1) with a pressure relief cavity inside, characterized in that: The pressure relief tank (1) has an exhaust port (3) on its upper side wall and an ash discharge port (2) on its lower side wall. Both the ash discharge port (2) and the exhaust port (3) are connected to the pressure relief chamber. A feed pipe (4) is connected to the side wall of the pressure relief tank (1). The feed pipe (4) has an inlet and an outlet. The inlet of the feed pipe (4) extends to the outside of the pressure relief tank (1), and the outlet of the feed pipe (4) extends into the pressure relief chamber. A dustproof net (5) is installed inside the pressure relief tank (1). The dustproof net (5) is located in the pressure relief chamber between the feed pipe (4) and the exhaust port (3).
2. The dust prevention and pressure relief device for coal ash loading and unloading according to claim 1, characterized in that: The pressure relief tank (1) has an opening at the top, and a tank cover (7) is also provided on the top of the pressure relief tank (1) to seal the opening.
3. The pressure relief and dust suppression device for loading and unloading fly ash as described in claim 2, characterized in that: The side wall of the can lid (7) is provided with a buckle (10), and the upper part of the side wall of the pressure relief tank (1) is provided with a lock (11) that is compatible with the buckle (10). The can lid (7) is fixed on the pressure relief tank (1) by the buckle (10) and the lock (11).
4. The pressure relief and dust suppression device for loading and unloading fly ash as described in claim 3, characterized in that: The inner wall of the pressure relief tank (1) is provided with a flange (6) extending radially thereon. The dustproof net (5) is placed on the top surface of the flange (6). The bottom surface of the tank cover (7) is provided with a support rod (8). The end of the support rod (8) away from the tank cover (7) is connected to a pressure ring (9). The pressure ring (9) is pressed against the dustproof net (5).
5. The dust and pressure relief device for handling of fly ash as claimed in claim 1 wherein: There are two pressure relief tanks (1) arranged in a mirror image. The feed pipe (4) is a three-way pipe structure, and the two ends of the feed pipe (4) are respectively connected to the two pressure relief tanks (1).
6. The dust and pressure relief device for handling of fly ash as claimed in claim 5 wherein: The pressure relief tank (1) includes a cylindrical section and a conical section, with the conical section integrally formed below the cylindrical section.
7. The dusting and pressure relief device for handling of fly ash according to claim 6, characterized in that: A ash discharge pipe is provided at the port of the ash discharge port (2), and the ash discharge pipe is connected to the ash discharge port (2) through a flange.
8. The dusting and pressure relief device for handling of fly ash as claimed in claim 1 wherein: The dustproof net (5) has a disc structure with a V-shaped longitudinal section and the V-shaped opening is oriented towards the fly ash flow direction.