Pneumatic conveying terminal box

Abstract

The utility model discloses a pneumatic conveying terminal box which comprises a terminal box body, a stock bin is arranged below the terminal box body, a bin pump is arranged at the bottom of the stock bin, and the pneumatic conveying terminal box is characterized in that a bin inlet is formed in the bottom of the terminal box body, and the terminal box body is communicated with the top of the stock bin through a pipeline at the bin inlet; a powder conveying opening is formed in one side of the terminal box body and used for being communicated with a powder conveying pipeline, an emptying opening and a return opening are sequentially formed in the side, adjacent to the powder conveying opening, of the terminal box body from top to bottom, and the free end of the emptying opening and the free end of the return opening are communicated with the bin pump through pipelines. Wear-resistant ceramic patches are pasted on four side vertical surfaces of the inner cavity of the terminal box body. The wear-resistant ceramic patch is arranged in the inner cavity of the terminal box body, so that the problem of wear resistance of the terminal box is solved, the service life of the terminal box is effectively prolonged, the emptying and returning functions are added while the conveying function is improved, and the problems that an existing terminal box is too scattered, single in function and inconvenient to overhaul and use are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of clean transportation equipment, and particularly relates to a pneumatic conveying terminal box. BACKGROUND

[0002] Pneumatic conveying, also known as airflow conveying, is a high-efficiency and environmentally-friendly conveying method for conveying granular or powder materials in a closed pipeline by using airflow as a carrier medium, and can realize horizontal, vertical or inclined transportation, and is generally suitable for conveying loose powder materials and has a wide range of applications in many fields. During conveying, the "mixture" of the material and the gas has a high flow rate in the pipeline, which brings high energy consumption, and thus causes serious wear of the conveying pipeline, especially at the pneumatic conveying terminal, the wear of the terminal equipment is particularly serious. In addition, due to the fact that the current pneumatic conveying terminal equipment is too dispersed and has a single function, there are many fault points at the top of the material bin that need to be maintained, and the point inspection and maintenance workload is large, which is time-consuming and laborious and inconvenient to use. SUMMARY

[0003] The utility model provides a kind of pneumatic conveying terminal box, it aims at solving the problems of serious wear of existing pneumatic conveying equipment, too dispersed and single function, and inconvenient maintenance and use.

[0004] To achieve the purpose, the utility model adopts the following technical scheme:

[0005] A kind of pneumatic conveying terminal box, including terminal box body, terminal box body lower is equipped with material bin, material bin bottom is equipped with bin pump, it is characterized by: the bottom of terminal box body is equipped with into bin mouth, terminal box body is communicated with the top of material bin by pipeline at into bin mouth place;The side of terminal box body is equipped with powder conveying port for connecting the pipeline of powder conveying, and the side of terminal box body adjacent to powder conveying port is sequentially equipped with emptying port and return port from top to bottom, and the free end of emptying port and return port is respectively communicated with bin pump by pipeline;Wear-resistant ceramic patch is attached on the four side vertical surfaces of the inner cavity of terminal box body.

[0006] Further, the terminal box body is a cuboid.

[0007] Further, the powder conveying port is arranged on the side vertical surface of the short side of the terminal box body.

[0008] Further, one end of the pipeline communicated with the into bin mouth, powder conveying port, emptying port and return port all extends into the terminal box body, the other end is all connected with flange, and the pipeline extending into the terminal box body is not attached with wear-resistant ceramic patch.

[0009] Further, the thickness of the wear-resistant ceramic patch is 3-5mm.

[0010] Compared with the prior art, the utility model has the beneficial effects as follows:

[0011] The pneumatic conveying terminal box provided by the utility model solves the problem of wear resistance of the terminal box and effectively prolongs the service life of the terminal box. The emptying port and the return port are added on the basis of conveying, which improves the conveying function and adds the emptying and return functions, multiple functions are integrated in one box body, the problems of excessive dispersion and single function of the existing terminal box, inconvenient maintenance and use are solved, not only the conveying requirements of the on-site pulverized coal ash, coal powder and other powdery materials are met, but also the disadvantages of pneumatic conveying are effectively improved, especially suitable for use at the top of the pulverized coal bin of the blast furnace coal injection system, simple structure and strong practicability. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a front view of the pneumatic conveying terminal box of the utility model;

[0013] Fig. 2 It is a top view of the pneumatic conveying terminal box of the utility model;

[0014] Fig. 3 It is a half-section structure schematic view of the pneumatic conveying terminal box of the utility model;

[0015] In the drawing: 1-terminal box body; 2-into the bin port; 3-conveying port; 4-emptying port; 5-return port; 6-wear-resistant ceramic patch; 7-pipeline. DETAILED DESCRIPTION

[0016] The utility model will be further described below in combination with the drawings:

[0017] For example Figs. 1-3As shown, the utility model is a kind of pneumatic conveying terminal box, including the cuboid terminal box body 1 of the material quality of plain carbon steel (Q235A), terminal box body 1 also can select high-quality carbon structural steel, wear-resistant steel or other steel plate according to needs, and the steel plate connecting mode of box body adopts welding.The terminal box body 1 below is equipped with bunker, and the bottom of bunker is equipped with bunker pump, and material is cached, transferred after bunker, and then is sent to next production link by bunker pump.The bottom of terminal box body 1 is equipped with inlet 2, and terminal box body 1 is communicated with the top of bunker at inlet 2 by pipeline 7, and the side vertical surface of short side of terminal box body 1 is equipped with powder conveying port 3 for connecting powder conveying pipeline 7, so that when material enters the inside of terminal box body 1, it can have longer caching distance for deceleration and pressure relief, and conveying material enters the inside of terminal box body 1 through powder conveying port 3 by pipeline 7, and after deceleration in the inside of terminal box body 1, it enters bunker through inlet 2.Because of the special nature of the work of bunker pump, the excess gas in the bunker pump needs to be discharged during each loading process, so the emptying port 4 and the return port 5 are sequentially arranged from top to bottom on one side of the terminal box body 1 adjacent to the powder conveying port 3, and the free ends of the emptying port 4 and the return port 5 are respectively communicated with the bunker pump by the pipeline 7, the emptying port 4 is used to discharge the gas in the bunker pump into the bunker, when the downstream production link does not need material, the material in the bunker pump needs to be returned to the bunker in time, so the return port 5 is used to return the remaining material in the bunker pump to the bunker in time.The four side vertical surfaces of the inner cavity of the terminal box body 1 are all pasted with wear-resistant ceramic patches 6 with a thickness of 5mm, the wear-resistant ceramic patches 6 need to be durable, and suitable wear-resistant materials can be selected according to the different material characteristics of the conveyed material, such as wear-resistant alloy, high manganese cast steel, high chromium composite alloy or other wear-resistant materials, and the ceramic patches should be replaced in time after wearing.The pipelines 7 connected at the inlet 2, the powder conveying port 3, the emptying port 4 and the return port 5 all extend into the inside of the terminal box body 1 at one end, and are all connected with flanges at the other end, and the pipelines 7 extending into the terminal box body 1 are not pasted with wear-resistant ceramic patches 6, the pipelines 7 all adopt thick-walled seamless steel pipes, and wear-resistant ceramic composite steel pipes or other wear-resistant materials can also be selected according to needs.

[0018] When in use, material is conveyed to powder conveying port 3 by pipeline 7 and enters the inside of terminal box body 1, because powder conveying port 3 is arranged on the side vertical surface of the short side of terminal box body 1, so material can have longer caching distance for deceleration and pressure relief after entering the inside of terminal box body 1, and then enters bunker through inlet 2 by pipeline 7, material is cached, transferred after bunker, and then is sent to next production link by bunker pump.Because of the special nature of the work of bunker pump, the excess gas in the bunker pump needs to be discharged through emptying port 4 to the bunker during each loading process.In actual use process, when the downstream production link does not need material, the material in the bunker pump needs to be returned to the bunker in time, so the return port 5 is used to return the remaining material in the bunker pump to the bunker in time.

Claims

1. A pneumatic conveying terminal box, comprising a terminal box body (1), wherein a hopper is provided below the terminal box body (1), and a hopper-type pump is provided at the bottom of the hopper, characterized in that: The terminal box body (1) has an inlet (2) at the bottom, and the terminal box body (1) is connected to the top of the silo through a pipe (7) at the inlet (2); the terminal box body (1) has a powder conveying port (3) on one side for connecting the powder conveying pipe (7); the terminal box body (1) adjacent to the powder conveying port (3) has an exhaust port (4) and a return port (5) from top to bottom on one side; the free ends of the exhaust port (4) and the return port (5) are connected to the silo pump through the pipe (7); wear-resistant ceramic patches (6) are attached to the four side surfaces of the inner cavity of the terminal box body (1).

2. The pneumatic conveying terminal box as described in claim 1, characterized in that: The terminal box body (1) is a cuboid.

3. The pneumatic conveying terminal box as described in claim 2, characterized in that: The powder inlet (3) is located on the side elevation of the short side of the terminal box body (1).

4. A pneumatic conveying terminal box as described in claim 3, characterized in that: One end of the pipe (7) connecting the inlet (2), powder inlet (3), vent (4) and return inlet (5) extends into the interior of the terminal box body (1), and the other end is connected to the flange. No wear-resistant ceramic patch (6) is attached to the pipe (7) extending into the terminal box body (1).

5. A pneumatic conveying terminal box as described in any one of claims 1-4, characterized in that: The thickness of the wear-resistant ceramic patch (6) is 3-5 mm.

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