Blowing assisting device for dense-phase ash conveying

Abstract

The utility model discloses a blowing assisting device for dense phase ash conveying, which comprises a manual ball valve, a pneumatic ball valve, a filter, a pressure reducing valve and a branch pipe table which are sequentially connected through pipelines, the air inlet end of the manual ball valve is connected with a compressed air pipeline through a pipeline, and the air outlet end of the branch pipe table is communicated with a material conveying pipeline; and a pressure transmitter is mounted on the material conveying pipeline on the rear side of the branch pipe table along the concentrated phase conveying advancing direction. The blowing assisting device is an auxiliary facility of a powder material conveying pipeline, can meet the requirement for long-distance conveying of high-humidity and high-viscosity powder materials, improves the conveying efficiency, guarantees the stability of a conveying system, meanwhile, is convenient to disassemble and maintain, and reduces the production cost. And under the condition of linkage with the pressure numerical value of the pressure transmitter, the high-pressure position of the powder material ash conveying pipeline can be quickly and accurately judged, so that the pressure of compressed air is increased to ensure normal operation of powder material conveying.

Description

Technical Field

[0001] The utility model relates to a blowing-assisting device for dense-phase ash conveying, belonging to the technical field of dense-phase pneumatic conveying. Background Art

[0002] At present, there are two main ash conveying methods commonly used in China, namely dense phase conveying and dilute phase conveying. The dense phase conveying system is widely used in chemical, electric power, building materials and other industries due to its advantages of fast conveying speed, high efficiency and suitability for long-distance conveying. However, in the actual operation process, especially when conveying powder materials with high humidity and high viscosity, pipe blockage is prone to occur in the ash conveying pipeline. To deal with the pipe blockage problem, the pipeline is usually disassembled in sections to check the location of the pipe blockage, which increases the maintenance and operation costs. Therefore, how to solve the problem of powder material pipe blockage is a technical problem that needs to be solved urgently in this field. Utility Model Content

[0003] The utility model aims to provide a blowing-assisting device for dense phase ash conveying, which can effectively solve the pipe blocking problem that occurs during the upper distance conveying of materials.

[0004] In order to realize the above scheme, the technical scheme adopted by the utility model is:

[0005] A blowing device for dense phase ash conveying comprises a manual ball valve, a pneumatic ball valve, a filter, a pressure reducing valve and a branch pipe platform which are sequentially connected through pipelines, wherein the air inlet end of the manual ball valve is connected to a compressed air pipeline through a pipeline, and the air outlet end of the branch pipe platform is connected to a material conveying pipeline; a pressure transmitter is installed on the material conveying pipeline located at the rear side of the branch pipe platform along the forward direction of dense phase conveying.

[0006] Preferably, the pneumatic actuator of the pneumatic ball valve is connected to the air pipeline of the control valve through an air pipe.

[0007] Preferably, the air tube is made of PU material.

[0008] Preferably, the filter is a Y-type filter, through which excess impurities entrained in the compressed air are filtered out.

[0009] Preferably, the pipeline between the pressure reducing valve and the branch pipe platform is a rubber hose, which is corrosion-resistant, bendable and easy to install.

[0010] Preferably, the installation height of the pressure reducing valve is higher than the installation height of the branch pipe platform to prevent the gas from driving the powder material to flow back into the blowing device.

[0011] The beneficial effects of the utility model are:

[0012] The blowing device is an auxiliary facility for the powder material conveying pipeline. It can meet the long-distance conveying of powder materials with high humidity and high viscosity. It not only improves the conveying efficiency but also ensures the stability of the conveying system. At the same time, the blowing device is easy to disassemble and repair, and when linked with the pressure value of the pressure transmitter, it can quickly and accurately determine the position of high pressure in the powder material ash conveying pipeline, thereby increasing the compressed air pressure to ensure the normal operation of powder material transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the installation of the blowing device on the horizontal pipeline;

[0014] Figure 2 This is a schematic diagram of the blowing device installed on the vertical pipeline.

[0015] The main reference numerals in the figure have the following meanings:

[0016] 1. Manual ball valve, 2. Pneumatic ball valve, 3. PU air pipe, 4. Y-type filter, 5. Pressure reducing valve, 6. Rubber hose, 7. Branch pipe platform, 8. Pressure transmitter. DETAILED DESCRIPTION

[0017] The utility model is specifically introduced below in conjunction with the accompanying drawings and embodiments.

[0018] This embodiment provides a blowing device for dense phase ash conveying, see Figure 1-2 As shown, it includes a manual ball valve 1, a pneumatic ball valve 2, a Y-type filter 4, a pressure reducing valve 5, a branch pipe 7 and a pressure transmitter 8. The air inlet end of the manual ball valve 1 is connected to the compressed air pipeline through a rigid pipeline, and the other end of the manual ball valve 1, the pneumatic ball valve 2, the Y-type filter 4, and the air inlet end of the pressure reducing valve 5 are also connected in sequence through rigid pipelines. The air outlet end of the branch pipe 7 is welded to the material conveying pipeline and connected to the material conveying pipeline. The air outlet end of the pressure reducing valve 5 is connected to the air inlet end of the branch pipe 7 through a rubber hose 6, and along the concentrated air supply pipe 8, the pressure transmitter 8 is connected to the compressed air supply pipe 8. In the forward conveying direction, a pressure transmitter 8 is installed on the material conveying pipeline located on the rear side of the branch platform 7; further, the installation height of the pressure reducing valve 5 is higher than the installation height of the branch platform 7; the pneumatic actuator of the pneumatic ball valve 2 is connected to the control valve air pipeline through the PU air pipe 3, and the pneumatic ball valve 2, the pressure reducing valve 5, and the pressure transmitter 8 are all electrically connected to the central controller, and the pressure data monitored by the pressure transmitter 8 is transmitted to the central controller for display, and the opening or closing of the pneumatic ball valve 2 and the opening of the pressure reducing valve 5 are controlled by the central controller.

[0019] In actual application, the installation position of the blowing device is first arranged in a group at a certain distance along the direction of the powder material conveying pipeline. The pressure transmitter 8 is installed at a distance of 250mm to 300mm behind the branch platform 7. The horizontal pipeline and the vertical pipeline are arranged according to the Figure 1-2Arrangement as shown (pay special attention that the position of the pressure reducing valve 5 should be higher than the position of the branch pipe platform 7 to prevent the gas and material from flowing back into the blowing device).

[0020] When conveying powder materials, open the manual ball valve 1 on site (normally in the normally open state), and then open the pneumatic ball valve 2 through the DCS program control of the central controller. The compressed air passes through the Y-type filter 4, the pressure reducing valve 5, and the branch pipe 7 and enters the material conveying pipeline to disturb and disperse the powder materials. In actual operation, the opening time of the pneumatic ball valve 2 and the pressure value displayed by the pressure transmitter 8 can be linked. When the pressure value is lower than the set value P 1 When the pressure value is maintained at the set value P, the pneumatic ball valve 2 is closed (the holding time can be set); 2 ~P 3 (maintaining time can be set), or higher than the set value P 4 (maintaining time can be set), where the pressure value P 4 >P 3 >P 2 >P 1 , then increase the compressed air pressure at the outlet of the pressure reducing valve 5 until the pressure value displayed by the pressure transmitter 8 is lower than the set value P 1 Finally, close the pneumatic ball valve 2 on this section of the blowing device.

[0021] This dense phase ash conveying and blowing device is an auxiliary facility for powder material conveying pipelines. It can meet the needs of long-distance conveying of materials with high humidity and high viscosity, and effectively solves the pipe blockage problem during the conveying process. It not only improves the conveying efficiency but also ensures the stability of the conveying system. At the same time, the blowing device is easy to disassemble and repair, and when linked with the pressure value of the pressure transmitter, it can quickly and accurately determine the position of high pressure in the material ash conveying pipeline, thereby increasing the compressed air pressure to ensure the normal operation of material transportation.

[0022] The above is only a preferred implementation of the utility model patent. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model patent. These improvements and modifications should also be regarded as the protection scope of the utility model patent.

Claims

1. A blowing device for dense phase ash conveying, characterized in that: It includes a manual ball valve, a pneumatic ball valve, a filter, a pressure reducing valve and a branch pipe platform which are sequentially connected through pipelines. The air inlet end of the manual ball valve is connected to the compressed air pipeline through a pipeline, and the air outlet end of the branch pipe platform is connected to the material conveying pipeline. Along the forward direction of dense phase conveying, a pressure transmitter is installed on the material conveying pipeline located at the rear side of the branch pipe platform.

2. The blowing-assisted device for dense phase ash conveying according to claim 1, characterized in that: The pneumatic actuator of the pneumatic ball valve is connected to the control valve air pipeline through an air pipe.

3. The blowing-assisted device for dense phase ash conveying according to claim 2, characterized in that: The air pipe is made of PU.

4. The blowing-assisted device for dense phase ash conveying according to claim 1, characterized in that: The filter is a Y-type filter.

5. The blowing-assisted device for dense phase ash conveying according to claim 1, characterized in that: The pipeline between the pressure reducing valve and the branch pipe platform is a rubber hose.

6. The blowing-assisted device for dense phase ash conveying according to claim 1, characterized in that: The installation height of the pressure reducing valve is higher than the installation height of the branch pipe platform.

Images