A positive pressure dilute phase pneumatic ash conveying system for cremator tail gas purification treatment system

Abstract

The utility model relates to a pneumatic dust conveying system technical field, especially to a kind of positive pressure dilute phase pneumatic dust conveying system for cremator tail gas purification treatment system, including dust conveying fan, dust conveying fan is connected with pressure transmitter by flange, pressure transmitter is connected with dust conveying pipeline by flange, dust conveying pipeline is connected with acceleration chamber by flange, electric rotary feeder is installed in acceleration chamber top, pneumatic gate valve is installed in electric rotary feeder top, pneumatic gate valve top is installed with dust discharging hopper, dust discharging hopper both sides each is installed with one warehouse wall vibrator.The utility model adopts pneumatic conveying principle, dust can be quickly, efficiently conveyed to destination, save manpower and time cost, improve work efficiency, it has higher degree of automation, can be stably operated, reduce the fault occurrence due to improper human operation, also applicable to the dust conveying task under the special working condition and environmental condition of the dust generated after cremation of cremator, have stronger pertinence.

Description

Technical Field

[0001] This utility model relates to the technical field of pneumatic ash conveying systems, and in particular to a positive pressure dilute phase pneumatic ash conveying system for a cremator exhaust gas purification system. Background Technology

[0002] After cremating a body, the cremator generates high-temperature exhaust gas at 500°C. The main components of this exhaust gas are dioxins, carbon monoxide, hydrogen chloride, sulfides, particulate matter (dust), heavy metals (mercury, etc.), and many other toxic substances. In particular, dioxins are strong carcinogens. After being adsorbed onto the particulate matter (dust), the dioxins settle together in the primary dust collector and the ash collection hopper of the pulse bag filter in the cremator exhaust gas purification system.

[0003] Because the particles (dust) collected in the ash hoppers of the primary dust collector and the pulse jet bag filter are relatively small in size and weight, and are collected manually one by one using woven bags, the collection process is not only cumbersome, with a high collection frequency, difficult handling, and high collection costs, but also prone to leakage due to poor sealing when using woven bags. This results in the collected particles (dust) containing dioxin-like compounds, which are highly carcinogenic, coming into direct contact with operators, seriously affecting the physical and mental health of funeral home staff and the surrounding environment of the funeral home.

[0004] Therefore, the above-mentioned ash conveying system uses manual collection, which is cumbersome, has a high collection frequency, is difficult to transport, and has high collection costs. Moreover, the poor sealing of woven bags makes it easy for ash to leak, which poses certain safety hazards to personnel during collection. Therefore, a positive pressure dilute phase pneumatic ash conveying system for the purification and treatment system of cremator exhaust gas can be designed. Utility Model Content

[0005] In order to overcome the problems of traditional ash conveying systems that rely on manual collection, which involves a cumbersome collection process, high collection frequency, difficult handling, high collection costs, and certain safety hazards for personnel during collection.

[0006] The technical solution is as follows: A positive pressure dilute phase pneumatic ash conveying system for a cremator exhaust gas purification system includes an ash conveying fan, a pressure transmitter connected to the ash conveying fan via a flange, an ash conveying pipeline connected to the pressure transmitter via a flange, an acceleration chamber connected to the ash conveying pipeline via a flange, an electric rotary feeder installed above the acceleration chamber, a pneumatic gate valve installed above the electric rotary feeder, an ash discharge hopper installed above the pneumatic gate valve, and a bin wall vibrator installed on each side of the ash discharge hopper.

[0007] Furthermore, a first bag filter is installed at the top of the ash hopper.

[0008] Furthermore, the acceleration chamber, electric rotary feeder, pneumatic gate valve, bin wall vibrator, ash discharge hopper and first bag filter are integrated to form a tail gas purification system, and the tail gas purification system is set up with 3-6 groups.

[0009] Furthermore, an ash storage device is installed on the outside of the ash conveying pipe, located on the side of the exhaust gas purification and treatment system, and the pipe at the connection between the ash conveying pipe and the ash storage device is a large-radius elbow pipe.

[0010] Furthermore, a second bag filter is installed at the top of the ash storage device, and an induced draft fan is installed at the side of the second bag filter.

[0011] Furthermore, the ash storage device includes an ash storage silo installed at the lower end of the second bag filter.

[0012] Furthermore, an auger conveyor is installed at the lower end of the ash storage silo.

[0013] Furthermore, a pneumatic clamp valve is installed on the air outlet duct of the first bag filter, and the number of the first bag filters is the same as the number of pneumatic clamp valves.

[0014] The beneficial effects are: 1. High efficiency and energy saving: Currently, the particulate matter, i.e. dust, in the ash hopper of the primary dust collector and the pulse bag dust collector is collected manually every day using woven bags. The exhaust gas purification system of the cremator in the funeral home generally has more than 3 sets, and the ash cleaning frequency is very high. After adopting this proprietary technology, it only needs to be cleaned once every 3-5 days depending on the cremation volume. The dilute phase pneumatic ash conveying system adopts the pneumatic conveying principle, which can quickly and efficiently transport the dust to the destination, saving manpower and time costs and improving work efficiency. 2. Simple operation: Currently, dust in the ash collection hopper of the primary dust collector and the pulse first bag dust collector is collected manually using individual woven bags. After a single woven bag is full, it needs to be replaced. When replacing, the full woven bag needs to be removed, and then the empty woven bag is installed and sealed tightly. With this proprietary technology, you only need to press the start button on the control panel and wait for the ash conveying to be completed. 3. Environmentally friendly and energy-saving: The system does not require the addition of other media or chemicals, reducing environmental pollution and meeting modern environmental protection requirements; 4. Stable operation: The system has a high degree of automation, can operate stably, and reduces the occurrence of failures caused by improper human operation.

[0015] 5. Highly targeted: The system is suitable for ash conveying tasks under special working conditions and environmental conditions of dust generated after cremation in crematoriums, and is highly targeted. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the positive pressure dilute phase pneumatic ash conveying system for the purification and treatment system of cremator exhaust gas according to this utility model. Figure 2 This is a top view of the present invention; Figure 3 This is a cross-sectional view of the ash unloading hopper of this utility model; Figure 4 This is a top view of the pneumatic clamp valve of this utility model; Figure 5 This is a cross-sectional view of the positive pressure dilute phase pneumatic ash conveying system of Embodiment 2 of this utility model.

[0017] In the attached diagram, the following are the reference numerals: 1. Ash conveying fan; 2. Pressure transmitter; 3. Ash conveying pipeline; 4. Acceleration chamber; 5. Electric rotary feeder; 6. Pneumatic gate valve; 7. Bin wall vibrator; 8. Ash discharge hopper; 9. First bag filter; 10. Ash storage device; 11. Second bag filter; 12. Exhaust fan; 13. Ash storage silo; 14. Screw conveyor; 15. Pneumatic clamp valve. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0019] Example 1 like Figures 1-4 As shown, a positive pressure dilute phase pneumatic ash conveying system for a cremator exhaust gas purification system includes an ash conveying fan 1, a pressure transmitter 2 connected to the ash conveying fan 1 via a flange, an ash conveying pipe 3 connected to the pressure transmitter 2 via a flange, an acceleration chamber 4 connected to the ash conveying pipe 3 via a flange, an electric rotary feeder 5 installed above the acceleration chamber 4, a pneumatic gate valve 6 installed above the electric rotary feeder 5, an ash discharge hopper 8 installed above the pneumatic gate valve 6, and a bin wall vibrator 7 installed on each side of the ash discharge hopper 8.

[0020] The first bag filter 9 is installed at the upper end of the ash hopper 8.

[0021] The acceleration chamber 4, electric rotary feeder 5, pneumatic gate valve 6, bin wall vibrator 7, ash discharge hopper 8, and first bag filter 9 together form a tail gas purification system, and the tail gas purification system is set up in 3 groups.

[0022] An ash storage device 10 is installed on the outside of the ash conveying pipe 3, located on the side of the exhaust gas purification and treatment system, and the pipe at the connection between the ash conveying pipe 3 and the ash storage device 10 is a large-radius elbow pipe.

[0023] A second bag filter 11 is installed at the upper end of the ash storage device 10, and an induced draft fan 12 is installed at the side end of the second bag filter 11.

[0024] The ash storage device 10 includes an ash storage bin 13 installed at the lower end of the second bag filter 11.

[0025] A screw conveyor 14 is installed at the lower end of the ash storage silo 13.

[0026] The first bag filter 9 is equipped with a pneumatic clamp valve 15 on its air outlet duct, and the number of the first bag filter 9 is the same as the number of pneumatic clamp valves 15.

[0027] When the particulate matter, i.e. dust, in the dust collector ash hopper 8 of the cremator exhaust gas purification system accumulates to a certain amount, it is then transported for ash handling. The control system issues a command, and the ash conveying fan 1 starts first, injecting compressed air into the ash conveying pipeline 3 for a brief positive pressure air blowing for about 1-2 minutes. This removes residual dust from the pipeline and prevents blockage. An initial positive pressure environment is established, and the pressure is monitored in real time by the pressure transmitter 2, with a pressure range of 0.1-0.3 MPa.

[0028] After the air blowing is completed, the wall vibrators 7 on both sides of the ash discharge hopper 8 are started simultaneously. The mechanical vibration knocks on the wall of the ash discharge hopper 8, causing the dust attached to the hopper wall to fall off, destroying the dust arch bridge structure, and causing the dust in the ash discharge hopper 8 to fall evenly above the pneumatic gate valve 6.

[0029] After the vibration is completed, the pneumatic gate valve 6 automatically opens, and the dust in the ash discharge hopper 8 falls to the electric rotary feeder 5 below. The feeder rotates at a speed of 10-20 rpm, cutting the dust into uniform material columns, which are continuously fed into the acceleration chamber 4. After entering the acceleration chamber 4, the dust mixes with the high-speed airflow in the ash conveying pipeline 3 at a flow rate of about 10-15 m / s, gaining kinetic energy. During the ash conveying process, the pressure transmitter 2 monitors the pressure value in the pipeline in real time and feeds it back to the control system. After each set of ash conveying is completed, the pneumatic gate valve 6 closes, and the next set of ash conveying process begins.

[0030] The ash conveying pipeline 3 is connected to the ash storage device 10 through a large-radius elbow pipe. The gas-solid mixed flow enters the ash storage silo 13. After the dust-laden airflow enters the ash storage silo 13, larger dust particles settle due to gravity, while fine dust rises with the airflow to the second bag filter 11. The second bag filter 11 traps the dust through the filter bags, and the purified gas is extracted by the induced draft fan 12, i.e., negative pressure suction, and discharged into the atmosphere or connected to subsequent treatment equipment. The dust collected in the ash storage silo 13 is periodically discharged through the lower auger conveyor 14.

[0031] When all groups of exhaust gas purification systems have completed ash conveying, or when the ash storage silo 13 reaches the set material level, the ash conveying fan 1, electric rotary feeder 5, induced draft fan 12 and other equipment will stop in sequence, and the pneumatic gate valve 6 will be closed to prevent dust backflow; the silo wall vibrator 7 will be restarted briefly to remove residual dust in the feeder and acceleration chamber 4.

[0032] After the system stops, the first bag filter 9 and the second bag filter 11 start the pulse cleaning program, that is, compressed air back-blowing the filter bags to shake off the trapped dust into the ash discharge hopper 8 or the ash storage bin 13. During cleaning, the pneumatic clamp valve 15 is closed to isolate the air path and ensure the cleaning effect.

[0033] Example 2 Based on Example 1, such as Figure 2 and Figure 5 As shown, a positive pressure dilute phase pneumatic ash conveying system for a cremator exhaust gas purification system includes an ash conveying fan 1, a pressure transmitter 2 connected to the ash conveying fan 1 via a flange, an ash conveying pipe 3 connected to the pressure transmitter 2 via a flange, an acceleration chamber 4 connected to the ash conveying pipe 3 via a flange, an electric rotary feeder 5 installed above the acceleration chamber 4, a pneumatic gate valve 6 installed above the electric rotary feeder 5, an ash discharge hopper 8 installed above the pneumatic gate valve 6, and a bin wall vibrator 7 installed on each side of the ash discharge hopper 8.

[0034] The first bag filter 9 is installed at the upper end of the ash hopper 8.

[0035] The acceleration chamber 4, electric rotary feeder 5, pneumatic gate valve 6, bin wall vibrator 7, ash discharge hopper 8, and first bag filter 9 together form a tail gas purification system, and the tail gas purification system is set up with 6 groups.

[0036] An ash storage device 10 is installed on the outside of the ash conveying pipe 3, located on the side of the exhaust gas purification and treatment system, and the pipe at the connection between the ash conveying pipe 3 and the ash storage device 10 is a large-radius elbow pipe.

[0037] A second bag filter 11 is installed at the upper end of the ash storage device 10, and an induced draft fan 12 is installed at the side end of the second bag filter 11.

[0038] The ash storage device 10 includes an ash storage bin 13 installed at the lower end of the second bag filter 11.

[0039] A screw conveyor 14 is installed at the lower end of the ash storage silo 13.

[0040] The first bag filter 9 is equipped with a pneumatic clamp valve 15 on its air outlet duct, and the number of the first bag filter 9 is the same as the number of pneumatic clamp valves 15.

[0041] When the particulate matter, i.e. dust, in the dust collector ash hopper 8 of the cremator exhaust gas purification system accumulates to a certain amount, it is then transported for ash handling. The control system issues a command, and the ash conveying fan 1 starts first, injecting compressed air into the ash conveying pipeline 3 for a brief positive pressure air blowing for about 1-2 minutes. This removes residual dust from the pipeline and prevents blockage. An initial positive pressure environment is established, and the pressure is monitored in real time by the pressure transmitter 2, with a pressure range of 0.1-0.3 MPa.

[0042] After the air blowing is completed, the wall vibrators 7 on both sides of the ash discharge hopper 8 are started simultaneously. The mechanical vibration knocks on the wall of the ash discharge hopper 8, causing the dust attached to the hopper wall to fall off, destroying the dust arch bridge structure, and causing the dust in the ash discharge hopper 8 to fall evenly above the pneumatic gate valve 6.

[0043] After the vibration is completed, the pneumatic gate valve 6 automatically opens, and the dust in the ash discharge hopper 8 falls to the electric rotary feeder 5 below. The feeder rotates at a speed of 10-20 rpm, cutting the dust into uniform material columns, which are continuously fed into the acceleration chamber 4. After entering the acceleration chamber 4, the dust mixes with the high-speed airflow in the ash conveying pipeline 3 at a flow rate of about 10-15 m / s, gaining kinetic energy. During the ash conveying process, the pressure transmitter 2 monitors the pressure value in the pipeline in real time and feeds it back to the control system. After each set of ash conveying is completed, the pneumatic gate valve 6 closes, and the next set of ash conveying process begins.

[0044] The ash conveying pipeline 3 is connected to the ash storage device 10 through a large-radius elbow pipe. The gas-solid mixed flow enters the ash storage silo 13. After the dust-laden airflow enters the ash storage silo 13, larger dust particles settle due to gravity, while fine dust rises with the airflow to the second bag filter 11. The second bag filter 11 traps the dust through the filter bags, and the purified gas is extracted by the induced draft fan 12, i.e., negative pressure suction, and discharged into the atmosphere or connected to subsequent treatment equipment. The dust collected in the ash storage silo 13 is periodically discharged through the lower auger conveyor 14.

[0045] When all groups of exhaust gas purification systems have completed ash conveying, or when the ash storage silo 13 reaches the set material level, the ash conveying fan 1, electric rotary feeder 5, induced draft fan 12 and other equipment will stop in sequence, and the pneumatic gate valve 6 will be closed to prevent dust backflow; the silo wall vibrator 7 will be restarted briefly to remove residual dust in the feeder and acceleration chamber 4.

[0046] After the system stops, the first bag filter 9 and the second bag filter 11 start the pulse cleaning program, that is, compressed air back-blowing the filter bags to shake off the trapped dust into the ash discharge hopper 8 or the ash storage bin 13. During cleaning, the pneumatic clamp valve 15 is closed to isolate the air path and ensure the cleaning effect.

Claims

1. A positive pressure dilute phase pneumatic ash conveying system for a cremator exhaust gas purification system, characterized in that, It includes an ash conveying fan (1), an ash conveying fan (1) connected to a pressure transmitter (2) via a flange, an ash conveying pipe (3) connected to the pressure transmitter (2) via a flange, an acceleration chamber (4) connected to the ash conveying pipe (3) via a flange, an electric rotary feeder (5) installed above the acceleration chamber (4), a pneumatic gate valve (6) installed above the electric rotary feeder (5), an ash discharge hopper (8) installed above the pneumatic gate valve (6), and a bin wall vibrator (7) installed on each side of the ash discharge hopper (8).

2. The positive pressure dilute phase pneumatic ash conveying system for a cremator exhaust gas purification system according to claim 1, characterized in that, The first bag filter (9) is installed at the upper end of the ash hopper (8).

3. The positive pressure dilute phase pneumatic ash conveying system for a cremator exhaust gas purification system according to claim 1, characterized in that, The acceleration chamber (4), electric rotary feeder (5), pneumatic gate valve (6), bin wall vibrator (7), ash hopper (8) and first bag filter (9) form a tail gas purification system, and the tail gas purification system is set to 3-6 groups.

4. The positive pressure dilute phase pneumatic ash conveying system for a cremator exhaust gas purification system according to claim 3, characterized in that, An ash storage device (10) located on the side of the exhaust gas purification system is installed on the outside of the ash conveying pipe (3), and the pipe at the connection between the ash conveying pipe (3) and the ash storage device (10) is a large-radius elbow pipe.

5. A positive pressure dilute phase pneumatic ash conveying system for a cremator exhaust gas purification system according to claim 4, characterized in that, A second bag filter (11) is installed at the upper end of the ash storage device (10), and an induced draft fan (12) is installed at the side end of the second bag filter (11).

6. A positive pressure dilute phase pneumatic ash conveying system for a cremator exhaust gas purification system according to claim 5, characterized in that, The ash storage device (10) includes an ash storage bin (13) installed at the lower end of the second bag filter (11).

7. A positive pressure dilute phase pneumatic ash conveying system for a cremator exhaust gas purification system according to claim 6, characterized in that, An auger conveyor (14) is installed at the lower end of the ash storage silo (13).

8. A positive pressure dilute phase pneumatic ash conveying system for a cremator exhaust gas purification system according to claim 2, characterized in that, The first bag filter (9) is equipped with a pneumatic clamp valve (15) on its air outlet duct, and the number of the first bag filter (9) is the same as the number of pneumatic clamp valves (15).

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