CN115477170A

CN115477170A - Negative-pressure anti-blocking discharging device and using method thereof

Info

Publication number: CN115477170A
Application number: CN202211227800.8A
Authority: CN
Inventors: 赵满祥; 张勇; 龚坚; 郑敬先; 宋少华; 张海滨; 潘明铭; 郑雅青; 张猛超
Original assignee: Beijing Shougang Co Ltd
Current assignee: Beijing Shougang Co Ltd
Priority date: 2022-10-09
Filing date: 2022-10-09
Publication date: 2022-12-16

Abstract

The embodiment of the application discloses stifled discharge apparatus is prevented to negative pressure and application method thereof relates to material strength airtight transportation technical field, includes: the discharging pipe is connected with the lower cone of the storage bin needing discharging through a bent pipe; the air inlet assembly is used for increasing the pressure intensity in the discharge pipe; the air supplement component is used for assisting in increasing the pressure intensity in the discharge pipe; the connecting assembly is arranged on the discharge pipe and is used for connecting the material suction tank car and the air supplementing assembly. The mode of air supply of the air inlet component and the air supply component is adopted, so that granular bulk materials are fully fluidized under the action of air flow communicated from inside to outside, and meanwhile, the material flow can be controlled by controlling the opening degrees of the front air inlet valve and the built-in air supply pipe.

Description

Negative-pressure anti-blocking discharging device and using method thereof

Technical Field

The application relates to the technical field of pneumatic closed conveying of materials, in particular to a negative-pressure anti-blocking discharging device and a using method thereof.

Background

Along with the improvement of environmental protection standards, more and more granular and powdery bulk materials tend to adopt a closed pneumatic transmission mode, and a negative pressure pumping mode is mostly adopted to avoid dust escape. Due to poor flowability and uneven grain size of granular bulk materials, the granular bulk materials are easy to extrude and block discharge pipelines, elbows, valve bodies and other parts at the bottom of the storage bin in the pneumatic conveying process, and especially the granular bulk materials with larger specific gravity. The anti-blocking modes such as a screw feeder, vibration fluidization and the like adopted in the common technology have the disadvantages of complex structure, high energy consumption and easy damage.

Disclosure of Invention

An object of the application is to provide a negative pressure prevents stifled discharge apparatus and application method thereof to solve the technical problem that exists among the prior art: how to solve the discharge tube of storage silo bottom promptly and jam the discharge tube because of the material extrusion that stores up, lead to the technical problem that granule material can't be pumped smoothly.

In order to solve the technical problem, the following technical scheme is adopted in the application:

the first aspect of the embodiment of the application provides a stifled discharge apparatus is prevented to negative pressure, includes: the discharging pipe is connected with a storage bin needing discharging through a bent pipe; the air inlet assembly is used for increasing the pressure intensity in the discharge pipe; the air replenishing component is used for assisting in increasing the pressure intensity in the discharge pipe; the connecting assembly is arranged on the discharge pipe and is used for connecting the material suction tank car and the air supplementing assembly.

In some embodiments, the air intake assembly comprises: the air inlet pipe is arranged at the upper end of the discharge pipe; and the air inlet valve is arranged in the air inlet pipe.

In some embodiments, the connecting component comprises a first flange and a second flange, the first flange and the second flange are respectively arranged at two ends of the discharge pipe, the first flange is used for connecting the air supplementing component, and the second flange is used for connecting the suction material tank truck.

In some embodiments, the air supplement assembly comprises: the first air supply unit and the second air supply unit are connected with the discharge pipe through first flange plates.

In some embodiments, the first air supplement unit comprises an air supplement pipe, and one end of the air supplement pipe extends to the middle of the discharge pipe through the first flange.

In some embodiments, the second air supplement unit comprises a nitrogen-assisted blowing valve, and an air outlet of the nitrogen-assisted blowing valve penetrates through the first flange plate and is positioned at the edge position of the discharge pipe.

In some embodiments, the angle between the inlet duct and the discharge duct is 45 °.

In some embodiments, the discharge tube is a round steel tube with a diameter of 150mm to 300 mm.

In some embodiments, the air supply pipe is a steel pipe with a diameter of 50 mm-80 mm.

The second aspect of the embodiment of the application provides a use method of a negative-pressure anti-blocking discharging device, which comprises the following steps:

1) Connecting the discharge pipe with the material suction tank car through the connecting component, and starting the negative pressure pump of the material suction tank car to pump negative pressure;

2) Opening an air inlet assembly and detecting an air inlet state;

3) Opening the air supplement component and detecting the air intake state;

4) And adjusting the air flow of the air inlet assembly and the air supply assembly according to the pressure gauge and the material flow display value of the negative pressure material suction tank car until the material flow reaches a required state.

According to the technical scheme, the method has at least the following advantages and positive effects:

the utility model provides a discharge apparatus is prevented stifled to negative pressure adopts leading admission valve, and the mode of built-in air supplement pipe makes granular bulk cargo fully fluidize under the air current effect that link up inside and outside, can control the material flow through the mode control of leading admission valve and built-in air supplement pipe aperture simultaneously.

The application in a stifled discharge apparatus is prevented to negative pressure can further open nitrogen gas and help the valve of blowing when carrying the great material of proportion, promotes the loose and flow of discharge tube edge part material, can help blowing aperture control material flow through adjustment nitrogen gas equally.

According to the application, the use method of the negative-pressure anti-blocking discharging device enables the granular materials stored in the discharging pipe to start to flow by sequentially opening the air inlet valve and the built-in air supplementing pipe, and the nitrogen blowing-assisting valve can be further opened to accelerate loosening and fluidization of the materials in the discharging pipe, so that the purpose of powerfully guaranteeing smooth pumping of the granular materials under the negative pressure condition is achieved.

Drawings

In order to explain the technical solution of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a negative pressure anti-blocking discharging device according to an embodiment.

The reference numerals are explained below: 1. a discharge pipe; 2. an intake valve; 3. a second flange plate; 4. a first flange plate; 5. a gas supplementing pipe; 6. a nitrogen-assisted blow valve; 7. the lower cone of the storage bin.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features.

In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "communicate", "mount", "connect", and the like are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Please refer to fig. 1.

Fig. 1 is a schematic structural diagram of a negative pressure anti-blocking discharge device in an embodiment of the present application, as shown in the figure, including: the discharging pipe 1 is connected with a lower cone 7 of the storage bin needing discharging through a bent pipe; the air inlet assembly is used for increasing the pressure intensity in the discharge pipe 1; the air supplement component is used for assisting in increasing the pressure intensity in the discharge pipe 1; the connecting assembly is arranged on the discharging pipe 1 and is used for connecting a material suction tank car and an air supplementing assembly. The mode of air supply of the air inlet component and the air supply component is adopted, so that granular bulk materials are fully fluidized under the action of air flow which is communicated from inside to outside, and meanwhile, the material flow can be controlled by controlling the opening degrees of the front air inlet valve 2 and the built-in air supply pipe 5.

In this embodiment, the intake assembly includes: the air inlet pipe is arranged at the upper end of the discharge pipe 1; and the air inlet valve 2 is arranged in the air inlet pipe. In the specific implementation process of this embodiment, the included angle between the air inlet pipe and the discharge pipe 1 is 45 °.

In this embodiment, coupling assembling includes first ring flange 4 and second ring flange 3, first ring flange 4 and second ring flange 3 set up respectively in the both ends of discharge tube 1, first ring flange 4 is used for connecting the tonifying qi subassembly, second ring flange 3 is used for connecting inhales the tank car.

In this embodiment, the gas supply assembly includes: the discharging pipe comprises a first air supply unit and a second air supply unit, wherein the first air supply unit and the second air supply unit are connected with the discharging pipe 1 through a first flange plate 4.

In this embodiment, the first air supplement unit includes an air supplement pipe 5, and one end of the air supplement pipe 5 extends to the middle of the discharge pipe 1 through the first flange plate 4. Preferably, the length of the built-in air supply pipe 5 exceeds 1000-1500 mm of the blanking central point of the storage bin.

In this embodiment, the second air supplement unit comprises a nitrogen blow-assisting valve 6, and an air outlet of the nitrogen blow-assisting valve 6 passes through the first flange plate 4 and is located at the edge of the discharge pipe 1. Preferably, the nitrogen pressure in the nitrogen blowing-assisted valve 6 is more than 0.2MPa.

In this embodiment, the discharge pipe 1 is a circular steel pipe with a diameter of 150mm to 300 mm.

In this embodiment, the air supply pipe 5 is a steel pipe having a diameter of 50mm to 80 mm.

The embodiment provides a use method of a negative-pressure anti-blocking discharging device, which comprises the following steps:

1) Connecting the discharge pipe 1 with a material suction tank car through a connecting assembly, and starting a negative pressure pump of the material suction tank car to pump negative pressure;

in the specific implementation process of the embodiment, the suction material tank truck is connected with the suction material tank truck through a second flange 3;

2) Opening the intake valve 2, detecting the intake state;

3) Opening a valve of the air supply pipe 5 and detecting an air inlet state;

4) And adjusting the air flow of the air inlet assembly and the air supply assembly according to the pressure gauge of the negative pressure suction tank car and the material flow display value until the material flow reaches a required state.

In the specific implementation process of this embodiment, if the conveying flow rate still does not meet the requirement in the fully opened state of the valve openings of the air inlet valve and the air supply pipe, the nitrogen blowing-assisted valve is gradually opened until the conveying flow rate meets the requirement.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a discharge apparatus is prevented stifled to negative pressure which characterized in that includes:

the discharging pipe is connected with a storage bin needing discharging through a bent pipe;

the air inlet assembly is used for increasing the pressure intensity in the discharge pipe;

the air supplement component is used for assisting in increasing the pressure intensity in the discharge pipe;

the connecting assembly is arranged on the discharge pipe and is used for connecting the material suction tank car and the air supplementing assembly.

2. The negative-pressure anti-blocking discharging device according to claim 1, wherein the air inlet assembly comprises:

the air inlet pipe is arranged at the upper end of the discharge pipe;

and the air inlet valve is arranged in the air inlet pipe.

3. The negative-pressure anti-blocking discharging device according to claim 1, wherein the connecting assembly comprises a first flange and a second flange, the first flange and the second flange are respectively arranged at two ends of the discharging pipe, the first flange is used for connecting the air supplementing assembly, and the second flange is used for connecting the material sucking tank truck.

4. The negative-pressure anti-blocking discharging device according to claim 3, wherein the air supplementing assembly comprises: the first air supply unit and the second air supply unit are connected with the discharge pipe through first flange plates.

5. The negative-pressure anti-blocking discharging device according to claim 4, wherein the first air supply unit comprises an air supply pipe, and one end of the air supply pipe extends to the middle of the discharging pipe through the first flange plate.

6. The negative-pressure anti-blocking discharging device according to claim 4, wherein the second air supply unit comprises a nitrogen blowing-assisting valve, and an air outlet of the nitrogen blowing-assisting valve penetrates through the first flange and is located at the edge of the discharging pipe.

7. The negative-pressure anti-blocking discharging device according to claim 2, wherein an included angle between the air inlet pipe and the discharging pipe is 45 degrees.

8. The negative-pressure anti-blocking discharging device according to claim 1, wherein the discharging pipe is a round steel pipe with a diameter of 150 mm-300 mm.

9. The negative-pressure anti-blocking discharging device according to claim 1, wherein the air supply pipe is a steel pipe with a diameter of 50-80 mm.

10. The use method of the negative-pressure anti-blocking discharging device is characterized by comprising the following steps of:

1) Connecting the discharge pipe with the material suction tank car through the connecting component, and starting a negative pressure pump of the material suction tank car to pump negative pressure;

2) Opening an air inlet assembly, and detecting an air inlet state;

3) Opening the air supplement component and detecting the air intake state;