CN209146582U - A kind of Solid Conveying and Melting wear-resistant bend - Google Patents

Abstract

The utility model relates to a kind of Solid Conveying and Melting wear-resistant bends, including the bend pipe with import nozzle, outlet nozzle, and it is provided with wear resistance lining on the inner wall of bend pipe, coupled logical feed pipe and discharge pipe are respectively fixedly connected on the import nozzle and outlet nozzle of elbow.The utility model is by way of increasing wearing layer and elbow pipe thickness, it is intended to elbow service life, better meets the technical process for needing long-term operation, and its structure is simple, it is low in cost, easy to make, the transmission process of high solid/gas body material suitable for chemical production process.

Description

A kind of Solid Conveying and Melting wear-resistant bend

Technical field

The utility model relates to a kind of materials to convey elbow, more particularly to a kind of Solid Conveying and Melting wear-resistant bend.

Background technique

In Modern Coal process and utilization technology, mostly use the mode of pneumatic conveying that solid coal dust is delivered to feed bin or reaction System.In air-transport system, conveyance conduit is a critical component.During long distance delivery, certain amount is needed Conduit component connect, coal dust could be delivered to reactor, elbow is one of common conduit component.

Pulverized coal particle object during transportation, since discharge pressure is big, logistics speed is fast, washes away conveyance conduit generation, It is more violent to washing away for tube wall in elbow corner especially to pipe connecting part elbow, elbow is seriously worn, needs frequency Numerous replacement.In existing technology, the elbow equal with former pipeline section is mostly used, and the wearability of such elbow is poor, is easy It is worn out to cause to leak, it is particularly unsuitable for conveying combustible medium, it is raw to be also unable to satisfy high intensity, long period, highdensity chemical industry Production. art requirement.Some patents are proposed to flexible buffer unit is arranged in elbow, such as buffer board, gum filler.Although It can avoid the abrasion directly washed away to a certain extent, but inner parts structure replacement is inconvenient.It may also can in addition, increasing inner parts structure Cause piping loss to increase, improves specific energy consumption, and then reduce gas transport efficiency.In order to overcome the shortcomings of it is above-mentioned it is existing it Place, the utility model devise wear-resistant bend.

Summary of the invention

A kind of the purpose of this utility model is to provide wearabilities Solid Conveying and Melting wear-resistant bend good, with long service life.

It includes with import nozzle, outlet nozzle that in order to achieve the above purposes, the technical solution adopted by the utility model is: Bend pipe, and it is provided with wear resistance lining on the inner wall of bend pipe, it is respectively fixedly connected on the import nozzle and outlet nozzle of elbow There are coupled logical feed pipe and discharge pipe.

The import nozzle and outlet nozzle axis angle range [90 °, 180 °].

The wear resistance lining with a thickness of 1~3mm, using one of ceramics, corundum, silicon carbide or multiple combinations.

5~10 times with a thickness of connected feed pipe wall thickness of the outside tube wall of the bend pipe.

The feed pipe and discharge pipe is connected with import nozzle and outlet nozzle in a welding manner.

The feed pipe is the seamless steel pipe that nominal dimension is DN20~DN300, internal diameter is D.

The discharge pipe is the seamless steel pipe that nominal dimension is DN20~DN300, internal diameter is D.

The elbow is 5~20m/s for conveying gas velocity degree, and solid-gas ratio is 1~500kg/m³Solid material pneumatic transporting It send.

The utility model substantially increases service life, better meets by increasing wearing layer and outside pipe thickness Need the technical process of long-term operation.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

In figure, 1 bend pipe；2 import nozzles；3 outlet conduits；4 wear resistance linings；5 outside tube walls；6 feed pipes；7 discharge nozzles Road.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

Referring to Fig. 1, the utility model includes the bend pipe 1 with import nozzle 2, outlet nozzle 3, import nozzle 2 and outlet 3 axis angle range of nozzle [90 °, 180 °], and the ceramics, corundum, carbon being provided on the inner wall of bend pipe 1 with a thickness of 1~3mm Wear resistance lining 4 made of one of SiClx or multiple combinations is respectively welded on the import nozzle 2 of elbow 1 and outlet nozzle 3 There are coupled logical feed pipe 6 and discharge pipe 7.

The thickness h of the outside tube wall 5 of the utility model bend pipe 1 by 5~10 times of 6 wall thickness of connection feed pipe.

The feed pipe 6, discharge pipe 7 of the utility model are all made of that nominal dimension is DN20~DN300, internal diameter is D's Seamless steel pipe.

The utility model elbow is 5~20m/s for conveying gas velocity degree, and gas-solid ratio is 1~300kg/m³Solid material Pneumatic conveying.

Claims (8)

1. a kind of Solid Conveying and Melting wear-resistant bend, it is characterised in that: including the bend pipe with import nozzle (2), outlet nozzle (3) (1), wear resistance lining (4) and on the inner wall of bend pipe (1) are provided with, in the import nozzle (2) and outlet nozzle (3) of bend pipe (1) On be respectively fixedly connected with coupled logical feed pipe (6) and discharge pipe (7).

2. Solid Conveying and Melting wear-resistant bend according to claim 1, it is characterised in that: the import nozzle (2) and outlet Nozzle (3) axis angle range is [90 °, 180 °].

3. Solid Conveying and Melting wear-resistant bend according to claim 1, it is characterised in that: the thickness of the wear resistance lining (4) For 1~3mm, using one of ceramics, corundum, silicon carbide or multiple combinations.

4. Solid Conveying and Melting wear-resistant bend according to claim 1, it is characterised in that: the outside tube wall of the bend pipe (1) (5) 5~10 times with a thickness of connected feed pipe (6) wall thickness.

5. Solid Conveying and Melting wear-resistant bend according to claim 1, it is characterised in that: the feed pipe (6) and discharging Pipeline (7) is connected with import nozzle (2) and outlet nozzle (3) in a welding manner.

6. Solid Conveying and Melting wear-resistant bend according to claim 1, it is characterised in that: the feed pipe (6) is nominal Having a size of DN20~DN300, the seamless steel pipe that internal diameter is D.

7. Solid Conveying and Melting wear-resistant bend according to claim 1, it is characterised in that: the discharge pipe (7) is nominal Having a size of DN20~DN300, the seamless steel pipe that internal diameter is D.

8. Solid Conveying and Melting wear-resistant bend according to claim 1, it is characterised in that: the elbow, which is used to convey gas velocity degree, is 5~20m/s, solid-gas ratio are 1~500kg/m³Solid material pneumatic conveying.