CN211569427U

CN211569427U - Wear-proof elbow for pneumatic conveying

Info

Publication number: CN211569427U
Application number: CN201922342710.3U
Authority: CN
Inventors: 毕雨; 田栋; 史凤林; 朱朝滨; 王亮; 周凯; 朱双; 张健; 李灏; 王婷婷; 王德群
Original assignee: Veolia Harbin Thermal Power Co Ltd
Current assignee: Veolia Harbin Thermal Power Co Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-09-25
Anticipated expiration: 2029-12-24

Abstract

The utility model discloses an abrasionproof elbow that pneumatic conveying used, swirl chamber (3), return bend (4) and inspection socket (5) casting are as an organic whole, swirl chamber (3) are spherical, intersect mutually with return bend (4), the opening direction of swirl chamber (3) is in the face of inlet flange (1), inspection socket (5) are located return bend (4) the outside, the central line and the planar contained angle of inlet flange (1) of inspection socket (5) are 45, plug (6) threaded connection is on inspection socket (5), special construction's swirl chamber (3) make pneumatic wear rate greatly reduced who carries elbow bend, the life extension, it will reduce to maintain and shut down the time cost, product itself is small, save installation space. The utility model is used for dense phase, dilute phase's transport, among the conveying system of malleation or negative pressure (vacuum), especially to the material transport effect of those easy grinding pipes very good.

Description

Wear-proof elbow for pneumatic conveying

Technical Field

The utility model relates to an abrasionproof elbow that pneumatic conveying used.

Background

In a thermal power plant, fly ash after boiler combustion is captured by a dust collector, is conveyed to an ash storehouse for temporary storage by compressed air through a bin pump and an ash conveying pipeline, and is then conveyed away by a special fly ash tanker. Tens of elbows exist on a pneumatic conveying pipeline, and due to the high pneumatic conveying speed, fly ash particles can cause great abrasion to the pipeline and the elbows, the existing abrasion-proof measures are mainly realized by lining an abrasion-proof ceramic chip on the elbow part or increasing the bending radius of the elbow, so that the investment cost is greatly increased, a large amount of space is occupied, even if the annual maintenance amount is large, and the development of the pipeline elbow which is small in size, abrasion-proof and suitable for gas conveying of powder and particle raw materials is urgent.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide an abrasionproof elbow that pneumatic transport used with swirl chamber used pneumatic transport usefulness, can effectively alleviate the abrasionproof degree of elbow, reduce the maintenance number of times, increase of service life has practiced thrift installation space effectively. The technical scheme of the utility model is that: an anti-abrasion elbow for pneumatic transmission comprises an inlet flange 1, an outlet flange 2, a vortex chamber 3, a bent pipe 4, an inspection opening 5 and a plug 6, wherein the vortex chamber 3, the bent pipe 4 and the inspection opening 5 are cast into a whole, the vortex chamber 3 is a spherical body and intersected with the bent pipe 4, the opening direction of the vortex chamber 3 faces the inlet flange 1, the inspection opening 5 is positioned on the outer side of the bent pipe 4, the included angle between the central line of the inspection opening 5 and the plane of the inlet flange 1 is 45 degrees, and the plug 6 is assembled on the inspection opening 5 in a threaded mode.

The inlet flange 1 and the outlet flange 2 form a 90-degree intersection angle.

The included angle alpha between the elbow 4 and the inlet flange 1 is 80-85 degrees.

The bending radius R of the elbow 4 is smaller than 2 times of the diameter phi of the elbow 4.

The utility model discloses a theory of operation:

as shown in fig. 1, when the pneumatically conveyed material passes through the elbow of the prior art structure, the material particles change direction to turn under the influence of the inner wall of the elbow, but at the same time, the particles can cause abrasion to the inner wall of the elbow, and particularly, the position of the outer wall 3 of the elbow is easy to abrade and leak. And the utility model discloses a structure is when carrying the material, as shown in fig. 2, the change on the direction is owing to receive the deflection in vortex chamber 3 when carrying, and the material granule recoil returns and bumps and change the flow direction and realize the turn with subsequent material granule, rather than receiving the influence of right angle return bend inner wall. Therefore, the elbow significantly reduces the grinding of the grinding pipe material on the pipeline and the elbow and the conveying failure during pneumatic conveying, and the spherical vortex cavity 3 has only little influence on the increase of the pressure loss. As shown in fig. 3, a plug 6 installed on the inspection port 5 may be periodically opened to inspect the vortex chamber 3 for wear or clogging.

The utility model discloses technological effect:

the utility model discloses a structure is when carrying the material, and the change on the direction is owing to receive the deflection in the vortex chamber when carrying, and the material granule recoil returns and bumps with subsequent material granule and change the flow direction and realize the turn, rather than receiving the influence of quarter bend inner wall. Therefore, the elbow significantly reduces the grinding and conveying faults of the grinding pipe material on the pipeline and the elbow during pneumatic conveying, the spherical vortex cavity has only little influence on the increase of the pressure loss, and the following problems can be eliminated: abrasion, fines and dust formation, flow splitting and stringing, turbulence, noise and heat transfer, and reduced or reduced maintenance and operating costs. The utility model is used for dense phase, dilute phase's transport, among the conveying system of malleation or negative pressure (vacuum), especially to the material transport effect of those easy grinding pipes very good.

Drawings

FIG. 1 is a schematic view of a prior art elbow

FIG. 2 is a sectional view of the anti-wear elbow of the present invention

FIG. 3 is a schematic view of the anti-abrasion elbow of the present invention

Detailed Description

As shown in figure 3, an anti-abrasion elbow for pneumatic transmission comprises an inlet flange 1, an outlet flange 2, a vortex chamber 3, a bent pipe 4, an inspection port 5 and a plug 6, wherein the vortex chamber 3, the bent pipe 4 and the inspection port 5 are cast into a whole, the vortex chamber 3 is a spherical body and intersected with the bent pipe 4, the opening direction of the vortex chamber 3 faces the inlet flange 1, the inspection port 5 is positioned on the outer side of the bent pipe 4, as shown in figure 2, the included angle between the central line of the inspection port 5 and the plane of the inlet flange 1 is 45 degrees, the plug 6 is in threaded fit connection with the inspection port 5, the inlet flange 1 and the outlet flange 2 form a 90-degree intersection angle, the included angle α between the bent pipe 4 and the inlet flange 1 is 80-85 degrees, and the bending radius R of the bent pipe 4 is less

The size of (c). The change of direction when carrying is because receive the deflection in vortex chamber 3, and the material granule recoil returns and bumps with subsequent material granule and changes the flow direction and realize turning, and not influenced by the right angle return bend inner wall. Therefore, the elbow obviously has little influence on the increase of pressure loss by the spherical vortex cavity 3, can reduce the crushing and dust leakage of fragile materials in the conveying process, and saves the installation space by right-angle reversing. And a plug 6 installed on the inspection port 5 can be periodically opened to inspect the vortex chamber 3 for wear or clogging.

Claims

1. The utility model provides an abrasionproof elbow that pneumatic conveying used which characterized by: the vortex chamber (3), the elbow (4) and the inspection port (5) are cast into a whole, the vortex chamber (3) is a spherical body and intersected with the elbow (4), the opening direction of the vortex chamber (3) faces the inlet flange (1), the inspection port (5) is positioned on the outer side of the elbow (4), the included angle between the central line of the inspection port (5) and the plane of the inlet flange (1) is 45 degrees, and the thread of the thread plug (6) is assembled on the inspection port (5).

2. The wear elbow of claim 1, wherein: the central line of the inlet flange (1) and the central line of the outlet flange (2) form a 90-degree intersection angle.

3. The wear elbow of claim 1, wherein: the included angle alpha between the elbow (4) and the inlet flange (1) is 80-85 degrees.

4. The wear elbow of claim 1, wherein: the bending radius R of the elbow (4) is smaller than 2 times of the diameter phi of the elbow (4).