A bore pump with flow restriction orifice

Abstract

This utility model discloses a silo pump with a flow-limiting orifice plate, including a silo body, a flow-limiting orifice plate, a main air inlet pipe, a mixing chamber, a conveying pipe, and a pressurizing air pipe. The lower end of the silo body is connected to the upper end of the mixing chamber, and a flow-limiting orifice plate is provided between them. The flow-limiting orifice plate has a mesh structure. The main air inlet pipe and the conveying pipe are respectively provided on two corresponding side walls of the mixing chamber and are connected to them. The main air inlet pipe is provided with a main air inlet valve. The upper end of the silo body is connected to the main air inlet pipe through a pressurizing air pipe, and a pressurizing valve is provided on the pressurizing air pipe. Compared with the prior art, it can prevent large pieces of material from entering the pipeline, avoid pipe blockage, and greatly save the workload of power plant maintenance.

Description

Technical Field

[0001] This utility model relates to the technical field of pneumatic conveying, and in particular to the technical field of a silo pump with a flow-limiting orifice plate. Background Technology

[0002] In pneumatic conveying systems, materials are transported from hoppers to silos via silo pumps and pipelines. In particular, when ash from the economizer in power plants is transported via silo pumps, large pieces of material are often mixed in due to boiler coking and other reasons. These large pieces of material enter the silo pumps, tees, and conveying pipelines. After entering the silo pumps, tees, and conveying pipelines, they eventually accumulate along the conveying pipes. Once they reach a certain level, they cause pipe blockages. Even if compressed air is used to blow the blockages through the pipes, it is difficult to clear them. Sometimes, it is even necessary to cut the pipes and remove the large pieces before the blockage can be cleared. This results in a huge workload for power plant maintenance. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the prior art by proposing a silo pump with a flow-limiting orifice plate, which can prevent large pieces of material from entering the pipeline, avoid pipe blockage, and greatly reduce the workload of power plant maintenance.

[0004] To achieve the above objectives, this utility model proposes a silo pump with a flow-limiting orifice plate, comprising a silo body, a flow-limiting orifice plate, a main air inlet pipe, a mixing chamber, a conveying pipe, and a pressurizing air pipe. The lower end of the silo body is connected to the upper end of the mixing chamber, and a flow-limiting orifice plate is provided between them. The flow-limiting orifice plate has a mesh structure. The main air inlet pipe and the conveying pipe are respectively provided on two corresponding side walls of the mixing chamber and are connected to them. A main air inlet valve is provided on the main air inlet pipe. The upper end of the silo body is connected to the main air inlet pipe through a pressurizing air pipe, and a pressurizing valve is provided on the pressurizing air pipe.

[0005] Preferably, the other two corresponding side walls of the mixing chamber are respectively provided with supplementary gasification ports that communicate with them.

[0006] Preferably, the main intake pipe is provided with a main air supply pipe connected to it, the output end of the main air supply pipe is connected to the input end of two air supply plastic hoses through an air supply tee connector, the output end of each of the two air supply plastic hoses is connected to two air supply gasification ports through a diaphragm check valve, and the main air supply pipe is provided with an air supply ball valve.

[0007] Preferably, the upper end of the silo is provided with a feed inlet, which is connected to the hopper through a feed pipe, and the feed pipe is provided with a feed valve.

[0008] Preferably, the flow-limiting orifice plate is provided with uniformly distributed fragmentation heads, the upper end of which is conical.

[0009] Preferably, the discharge port side of the silo is provided with an inspection door.

[0010] Preferably, the lower end of the chamber is provided with a supplementary air purge valve connected thereto, and the supplementary air purge valve is connected to the main air intake pipe through a purge hose.

[0011] The beneficial effects of this utility model are as follows: This utility model connects the lower end of the silo body to the upper end of the mixing chamber, with a flow-limiting orifice plate between them. The flow-limiting orifice plate has a mesh structure. The upper end of the silo body is connected to the main air inlet pipe through a pressurizing air pipe, which is equipped with a pressurizing valve. The flow-limiting orifice plate blocks large pieces of material, preventing them from entering the conveying pipe and causing blockage. In addition, gas is supplied to the silo body through the pressurizing air pipe, allowing the material in the silo body to smoothly pass through the flow-limiting orifice plate and enter the mixing chamber under air pressure. When large pieces of material are blocked by the flow-limiting orifice plate, the material flowing through the orifice plate under air pressure will also squeeze and break the large pieces of material, improving the smoothness of material flow. Compared with the prior art, this utility model can prevent large pieces of material from entering the pipeline, avoid pipe blockage, and greatly save the workload of power plant maintenance.

[0012] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a silo pump with a flow-limiting orifice plate according to the present invention;

[0014] Figure 2 This is a partial side view of a flow-limiting orifice plate according to this utility model.

[0015] In the diagram: 1-hopper body, 2-flow limiting orifice plate, 3-main air inlet pipe, 4-mixing chamber, 5-feeding pipe, 6-pressurizing air pipe, 7-main air inlet valve, 8-pressurizing valve, 9-makeup air gasification port, 10-makeup air main pipe, 11-makeup air tee connector, 12-makeup air plastic hose, 13-diaphragm check valve, 14-makeup air ball valve, 15-feed inlet, 16-feed pipe, 17-hopper, 18-crushing head, 19-inspection door, 20-makeup air blow-off valve, 21-blow-off hose, 22-feed valve. Detailed Implementation

[0016] See Figure 1 , Figure 2This utility model discloses a silo pump with a flow-limiting orifice plate, comprising a silo body 1, a flow-limiting orifice plate 2, a main air inlet pipe 3, a mixing chamber 4, a conveying pipe 5, and a pressurizing air pipe 6. The lower end of the silo body 1 is connected to the upper end of the mixing chamber 4, and the flow-limiting orifice plate 2 is provided between the two. The flow-limiting orifice plate 2 has a mesh structure. The main air inlet pipe 3 and the conveying pipe 5 are respectively provided on two corresponding side walls of the mixing chamber 4 and are connected thereto. The main air inlet pipe 3 is provided with a main air inlet valve 7. The upper end of the silo body 1 is connected to the main air inlet pipe 3 through the pressurizing air pipe 6, and the pressurizing air pipe 6 is provided with a pressurizing valve 8.

[0017] The other two corresponding side walls of the mixing chamber 4 are respectively provided with supplementary gas flow inlets 9 that communicate with it.

[0018] The main air intake pipe 3 is provided with a main air supply pipe 10 connected to it. The output end of the main air supply pipe 10 is connected to the input end of two air supply plastic hoses 12 through an air supply tee connector 11. The output ends of the two air supply plastic hoses 12 are connected to two air supply gasification ports 9 through diaphragm check valves 13. The main air supply pipe 10 is provided with an air supply ball valve 14.

[0019] The upper end of the silo body 1 is provided with a feed inlet 15, which is connected to the hopper 17 through a feed pipe 16. The feed pipe 16 is provided with a feed valve 22.

[0020] The flow-limiting orifice plate 2 is provided with uniformly distributed block-breaking heads 18, the upper end of which is conical.

[0021] The discharge port side of the silo 1 is provided with an inspection door 19.

[0022] The lower end of the chamber 1 is provided with an air replenishment and plugging valve 20 connected thereto, and the air replenishment and plugging valve 20 is connected to the main air intake pipe 3 through a plugging hose 21.

[0023] The working process of this utility model:

[0024] In operation, the feed valve 22 of this utility model is opened, and the material in the hopper 17 enters the silo 1 through the feed pipe 16. After the material is added to the silo 1, the feed valve 22 is closed. Then, the main air inlet valve 7, the pressure valve 8, and the gas supply valve 14 are opened, and gas is delivered into the silo 1 through the pressure pipe 6. The material in the silo 1 is then smoothly passed through the flow-limiting orifice plate 2 and enters the mixing chamber 4 under the action of air pressure. The gas entering the mixing chamber 4 through the gas supply main pipe 10, the gas supply tee connector 11, the gas supply plastic hose 12, the diaphragm check valve 13, and the gas supply gasification port 9 gasesizes the material inside. The gas entering the mixing chamber 4 through the main air inlet pipe 3 drives the mixture in the mixing chamber 4 to be output through the conveying pipe 5.

[0025] When the pressure inside the conveying pipe 5 increases due to ash blockage, open the air supply and blow-out valve 20 to blow air through the conveying pipe 5.

[0026] The flow-limiting orifice plate 2 is provided with uniformly distributed crushing heads 18. The upper end of the crushing head 18 is conical. When large pieces of material pass through the crushing head 18, the large pieces of material will be crushed by it, thereby improving the crushing effect of large pieces of material.

[0027] This application can be widely used in economizer silo pumps in thermal power plants, as well as in areas where large-scale coal mining occurs in the steel and metallurgical industry.

[0028] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A cartridge pump with flow restriction orifice, characterized by: The container includes a silo body (1), a flow-limiting orifice plate (2), a main air inlet pipe (3), a mixing chamber (4), a conveying pipe (5), and a pressurizing air pipe (6). The lower end of the silo body (1) is connected to the upper end of the mixing chamber (4), and a flow-limiting orifice plate (2) is provided between them. The flow-limiting orifice plate (2) has a mesh structure. The main air inlet pipe (3) and the conveying pipe (5) are respectively provided on two corresponding side walls of the mixing chamber (4). The main air inlet pipe (3) is provided with a main air inlet valve (7). The upper end of the silo body (1) is connected to the main air inlet pipe (3) through the pressurizing air pipe (6). The pressurizing air pipe (6) is provided with a pressurizing valve (8).

2. A cartridge pump with flow restriction orifice as claimed in claim 1 characterized in that: The mixing chamber (4) has two other corresponding side walls with supplementary gas flow inlets (9) that are connected to it.

3. A cartridge pump with flow restriction orifice as claimed in claim 2, wherein: The main air intake pipe (3) is provided with a supplementary air main pipe (10) connected to it. The output end of the supplementary air main pipe (10) is connected to the input end of two supplementary air plastic hoses (12) through a supplementary air tee connector (11). The output ends of the two supplementary air plastic hoses (12) are connected to two supplementary air gasification ports (9) through a diaphragm check valve (13). The supplementary air main pipe (10) is provided with a supplementary air ball valve (14).

4. A cartridge pump with flow restriction orifice as claimed in claim 1 wherein: The upper end of the silo body (1) is provided with a feed inlet (15), which is connected to the hopper (17) through a feed pipe (16). The feed pipe (16) is provided with a feed valve (22).

5. A cartridge pump with flow restriction orifice as claimed in claim 1 wherein: The flow-limiting orifice plate (2) is provided with uniformly distributed breaking heads (18), the upper end of which is conical.

6. A cartridge pump with flow restriction orifice as claimed in claim 1 wherein: The discharge port side of the silo body (1) is provided with an inspection door (19).

7. A cartridge pump with orifice restriction according to any one of claims 1 to 6, wherein: The lower end of the chamber (1) is provided with a gas replenishment and plugging valve (20) connected thereto. The gas replenishment and plugging valve (20) is connected to the main air intake pipe (3) through a plugging hose (21).

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