Pneumatic conveying turbulent flow generating device

Abstract

The utility model provides a pneumatic conveying turbulence generating device, and belongs to the technical field of thermal power and metallurgy. The pneumatic conveying turbulent flow generating device comprises an air supply main pipe, a main air inlet control valve set, a compressed air flow controller, a diaphragm type check valve, an inter-pump fluidization pipe and an air supply sub pipe, when the pneumatic conveying turbulent flow generating device is used, compressed air enters the inter-pump fluidization pipe through the compressed air flow controller and the diaphragm type check valve, and forms a turbulent flow state with main air flow of the inter-pump fluidization pipe; according to the pneumatic conveying turbulent flow generating device, the direction of the main airflow is changed through local air inlet, so that turbulent flow is formed locally, the turbulent flow wraps the fly ash at the bottom of the inter-pump fluidization pipe, the fluidization effect is achieved, and the fluidization effect is improved. Fly ash flowability is improved, the settling problem of fly ash in the inter-pump fluidization pipe is solved, and therefore conveying resistance is reduced, and the capacity of a conveying system is improved.

Description

Technical Field

[0001] The present application relates to the fields of thermal power and metallurgical technology, and in particular to a pneumatic conveying turbulence generating device. Background Art

[0002] With the advancement of environmental protection policies, particulate matter emission limits have been tightened, and ultra-low particulate matter emission control requires closed transportation, mainly using pneumatic conveying. Currently, especially in the power industry, due to changes in coal combustion, the characteristics of fly ash have become heavier, coarser, and the fluidity has deteriorated. In addition, due to wear and tear of equipment, the original pneumatic conveying system configuration and conveying capacity has continued to decline, and the system design capacity cannot be guaranteed; in addition, fly ash settles severely in the pipeline, and the static friction of fly ash in the pipeline makes it difficult to start the conveying, which seriously affects the efficiency of pneumatic conveying, thereby affecting clean emissions and safe production. Therefore, this field is in urgent need of an efficient, stable and reliable device to fluidize the fly ash in the pipeline, improve the fluidity of the fly ash, and improve the settlement of the fly ash in the pipeline, thereby reducing the conveying resistance and improving the capacity of the conveying system. Utility Model Content

[0003] In order to make up for the above shortcomings, the present application provides a pneumatic conveying turbulence generating device, which aims to improve the current problems, especially in the power industry, such as the changes in coal combustion, the fly ash characteristics becoming heavier, coarser and less fluid, and the wear and tear of equipment, the original pneumatic conveying system configuration conveying capacity continues to decline, and the system design capacity cannot be guaranteed; in addition, the fly ash settles severely in the pipeline, and the static friction of the fly ash in the pipeline makes it difficult to start the conveying, which seriously affects the efficiency of pneumatic conveying, thereby affecting clean emissions and safe production.

[0004] This application is implemented as follows:

[0005] The present application provides a pneumatic conveying turbulence generating device, comprising an air supply main pipe, a total air intake control valve group, a compressed air throttle, a diaphragm check valve, a pump inter-fluidizing pipe and an air supply sub-pipe, wherein the total air intake control valve group is arranged on the air supply main pipe, and one end of the air supply sub-pipe is arranged on the air supply main pipe;

[0006] The other end of the air supply sub-pipe is arranged on the inter-pump fluidizing pipe, the compressed air throttle and the diaphragm check valve are both arranged on the air supply sub-pipe, and the diaphragm check valve is located below the compressed air throttle.

[0007] In one embodiment of the present application, the diaphragm check valve includes a valve cover, a valve body, a bowl-shaped air permeable plate, a rubber diaphragm and a stop block, the valve cover and the valve body are fixed together, the bowl-shaped air permeable plate is clamped between the valve cover and the valve body, and the rubber diaphragm is fixed to the bowl-shaped air permeable plate through the stop block.

[0008] In one embodiment of the present application, a locking member is further included, and the bowl-shaped air-permeable plate, the rubber diaphragm and the stop block are fixed together by the locking member.

[0009] In one embodiment of the present application, a sealing gasket is further included. The sealing gasket is filled between the valve cover and the bowl-shaped air-permeable plate, and the sealing gasket is also filled between the valve body and the bowl-shaped air-permeable plate.

[0010] In one embodiment of the present application, a plurality of the air supply sub-pipes are provided, and the plurality of the air supply sub-pipes are linearly and equidistantly arranged on the inter-pump fluidizing pipe.

[0011] The beneficial effects of the present application are as follows: the present application obtains a pneumatic conveying turbulence generating device through the above-mentioned design. When in use, the total air intake control valve group controls the compressed air to enter the air supply sub-pipe through the air supply main pipe, the compressed air throttle controls the amount of compressed air entering the pump inter-fluidizing pipe, and the diaphragm check valve prevents dust and gas from returning, thereby increasing the life of the device and extending the inspection and maintenance cycle. Each compressed air throttle is adjusted as needed. When the main conveyor of the pneumatic conveying system connected to the pump inter-fluidizing pipe starts to take in air, the total air intake control valve group is also opened to provide compressed air to each air supply sub-pipe. The compressed air It enters the pump room fluidizing pipe through the compressed air throttle and the diaphragm check valve, and forms a turbulent flow state with the main air flow in the pump room fluidizing pipe. The air flow in the turbulent area moves forward in a vortex manner, thereby rolling up the fly ash at the bottom of the pipe, thereby realizing fluidization. The pneumatic conveying turbulence generating device changes the direction of the main air flow through local air intake, thereby forming turbulence locally. The turbulent gas wraps up the fly ash at the bottom of the pump room fluidizing pipe, thereby achieving the fluidization effect, improving the fluidity of the fly ash, and improving the sedimentation problem of the fly ash in the pump room fluidizing pipe, thereby reducing the conveying resistance and improving the capacity of the conveying system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a structural schematic diagram of a pneumatic conveying turbulence generating device provided in an embodiment of the present application;

[0014] Figure 2 A schematic diagram of the cross-sectional structure of a diaphragm check valve provided in an embodiment of the present application.

[0015] In the figure: 110 - air supply main pipe; 130 - main air intake control valve group; 140 - compressed air throttle; 150 - diaphragm check valve; 151 - valve cover; 152 - valve body; 153 - bowl-shaped air permeable plate; 154 - rubber diaphragm; 155 - stop block; 156 - locking piece; 157 - sealing gasket; 160 - pump room fluidizing pipe; 170 - air supply sub-pipe. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0017] Example

[0018] See also Figure 1 and Figure 2 The present application provides a technical solution: a pneumatic conveying turbulence generating device, comprising an air supply main pipe 110, a total air intake control valve group 130, a compressed air throttle 140, a diaphragm check valve 150, a pump inter-fluidizing pipe 160 and an air supply sub-pipe 170, wherein the total air intake control valve group 130 is arranged on the air supply main pipe 110, and one end of the air supply sub-pipe 170 is arranged on the air supply main pipe 110;

[0019] The other end of the air supply sub-pipe 170 is arranged on the pump inter-fluidizing pipe 160, and the compressed air throttle 140 and the diaphragm check valve 150 are both arranged on the air supply sub-pipe 170. The diaphragm check valve 150 includes a valve cover 151, a valve body 152, a bowl-shaped air permeable plate 153, a rubber diaphragm 154 and a stop block 155. The valve cover 151 and the valve body 152 are fixed together, the bowl-shaped air permeable plate 153 is clamped between the valve cover 151 and the valve body 152, and the rubber diaphragm 154 is fixed on the bowl-shaped air permeable plate 153 by the stop block 155. The setting of the rubber diaphragm 154 is convenient for protecting the bowl-shaped air permeable plate 153, thereby improving the service life of the diaphragm check valve 150. The diaphragm check valve 150 also includes a locking member 156, and the bowl-shaped air permeable plate 153, the rubber diaphragm 154 and the stop block 155 are fixed together by the locking member 156. The locking member 156 in this embodiment is a bolt;

[0020] It also includes a sealing gasket 157. The sealing gasket 157 is filled between the valve cover 151 and the bowl-shaped air permeable plate 153. The sealing gasket 157 is also filled between the valve body 152 and the bowl-shaped air permeable plate 153. The setting of the sealing gasket 157 ensures the sealing between the bowl-shaped air permeable plate 153 and the valve cover 151 and the valve body 152. The diaphragm check valve 150 is located below the compressed air throttle 140. There are multiple air supply sub-pipes 170. The multiple air supply sub-pipes 170 are linearly and equidistantly arranged on the pump inter-fluidizing pipe 160. The installation spacing between the multiple air supply sub-pipes 170 is large. Reasonable setting of the installation spacing and reasonable air distribution volume can achieve a stable fluidization effect. The present application does not rely on a large amount of compressed air consumption to achieve a fluidization effect. The compressed air used for turbulent flow is interlocked with the original pneumatic conveying system, and the air intake is automatically switched on and off when the system is running. The present application is external and can be automatically controlled.

[0021] Specifically, the working principle of the pneumatic conveying turbulence generating device is as follows: when in use, the total air intake control valve group 130 controls the compressed air to enter the air supply sub-pipe 170 through the air supply main pipe 110, the compressed air throttle 140 controls the amount of compressed air entering the pump inter-fluidizing pipe 160, and the diaphragm check valve 150 prevents dust and gas from returning, thereby increasing the life of the device and extending the maintenance cycle. Each compressed air throttle 140 is adjusted as needed. When the main conveyor of the pneumatic conveying system connected to the pump inter-fluidizing pipe 160 starts to intake air, the total air intake control valve group 130 is also opened to provide compressed air to each air supply sub-pipe 170. The compressed air passes through The air passes through the compressed air throttle 140 and the diaphragm check valve 150 and enters the inter-pump fluidizing pipe 160, forming a turbulent flow state with the main airflow in the inter-pump fluidizing pipe 160. The airflow in the turbulent area moves forward in a vortex manner, thereby rolling up the fly ash at the bottom of the pipe, thereby achieving fluidization. The pneumatic conveying turbulence generating device changes the direction of the main airflow through local air intake, thereby forming turbulence locally. The turbulent gas wraps up the fly ash at the bottom of the inter-pump fluidizing pipe 160, thereby achieving the effect of fluidization, improving the fluidity of the fly ash, and improving the sedimentation problem of the fly ash in the inter-pump fluidizing pipe 160, thereby reducing the conveying resistance and improving the capacity of the conveying system.

[0022] It should be noted that the specific model specifications of the total air intake control valve group 130 and the compressed air throttle 140 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail.

[0023] The power supply and principle of the total air intake control valve group 130 and the compressed air throttle 140 are clear to those skilled in the art and will not be described in detail herein.

[0024] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A pneumatic conveying turbulence generating device, characterized in that: It comprises an air supply main pipe (110), a total air intake control valve group (130), a compressed air throttle (140), a diaphragm check valve (150), a pump inter-fluidizing pipe (160) and an air supply sub-pipe (170), wherein the total air intake control valve group (130) is arranged on the air supply main pipe (110), and one end of the air supply sub-pipe (170) is arranged on the air supply main pipe (110); The other end of the air supply sub-pipe (170) is arranged on the inter-pump fluidizing pipe (160), and the compressed air throttle (140) and the diaphragm check valve (150) are both arranged on the air supply sub-pipe (170), and the diaphragm check valve (150) is located below the compressed air throttle (140).

2. A pneumatic conveying turbulence generating device according to claim 1, characterized in that: The diaphragm check valve (150) comprises a valve cover (151), a valve body (152), a bowl-shaped air permeable plate (153), a rubber diaphragm (154) and a stopper (155); the valve cover (151) and the valve body (152) are fixed together; the bowl-shaped air permeable plate (153) is clamped between the valve cover (151) and the valve body (152); and the rubber diaphragm (154) is fixed to the bowl-shaped air permeable plate (153) via the stopper (155).

3. A pneumatic conveying turbulence generating device according to claim 2, characterized in that: It also comprises a locking piece (156), and the bowl-shaped air-permeable plate (153), the rubber membrane (154) and the stop block (155) are fixed together by the locking piece (156).

4. A pneumatic conveying turbulence generating device according to claim 2, characterized in that: It also includes a sealing gasket (157). The sealing gasket (157) is filled between the valve cover (151) and the bowl-shaped air permeable plate (153), and the sealing gasket (157) is also filled between the valve body (152) and the bowl-shaped air permeable plate (153).

5. A pneumatic conveying turbulence generating device according to claim 1, characterized in that: A plurality of the air supply sub-pipes (170) are provided, and the plurality of the air supply sub-pipes (170) are linearly and equidistantly arranged on the inter-pump fluidizing pipe (160).

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