一种氧化镁煅烧除尘用的负压结构

Abstract

本实用新型公开了一种氧化镁煅烧除尘用的负压结构，涉及氧化镁煅烧技术领域，包括闪蒸除尘器及其底部的灰斗，所述闪蒸除尘器的左侧设置有输料管、投料口与输料绞龙，且闪蒸除尘器的右侧设置有引风除尘器及其灰斗、前除尘器及其灰斗与负压管，并且这两个灰斗的内部均安装有气动闸阀。该种氧化镁煅烧除尘用的负压结构在使用时，可依靠输料绞龙的进料及闪蒸除尘器的负压作用，实现快速进料，无需完全依靠人工加料，且三个除尘器整体通过负压管进行密封连通，减少了物料污染，还可减少物料扬尘导致的环境污染和物料损耗；通过引风除尘器与前除尘器可自由设定的反吹交替，可实现对物料的快速除尘，从而保证正常煅烧。

Claims

1. A negative pressure structure for dust removal in magnesium oxide calcination, comprising a flash dust collector (1), wherein a conveying pipe (3) is installed at the lower left corner of the flash dust collector (1), and a feeding port (4) is installed at the upper left corner of the conveying pipe (3), and a conveying auger (5) is movably installed inside the conveying pipe (3). characterized in that The flash dust collector (1) is equipped with a first ash hopper (2) at its bottom end. The right side of the flash dust collector (1) is also equipped with an induced draft dust collector (6) and a front dust collector (7) in sequence. The bottom ends of the induced draft dust collector (6) and the front dust collector (7) are respectively equipped with a second ash hopper (8) and a third ash hopper (9). The bottom ends of the second ash hopper (8) and the third ash hopper (9) are connected to a negative pressure pipe (10). The left port of the negative pressure pipe (10) is inserted into the upper right corner of the first ash hopper (2). The bottom ends of the second ash hopper (8) and the third ash hopper (9) are respectively equipped with a first pneumatic gate valve (11) and a second pneumatic gate valve (12). The back-blowing time of the induced draft dust collector (6) and the front dust collector (7) is centrally and automatically controlled.

2. The negative pressure structure for the dust removal of the calcined magnesium oxide according to claim 1, characterized in that: The discharge port heights of the second ash hopper (8) and the third ash hopper (9) are kept basically the same, so that they share a negative pressure pipe (10) for dust collection. The right port of the negative pressure pipe (10) is also equipped with a third pneumatic gate valve (13) for air distribution.

3. The negative pressure structure for the dust removal of the calcined magnesium oxide according to claim 2, characterized in that: A ring of adhesive sealant (14) is bonded between the connection between the negative pressure pipe (10) and the first ash hopper (2), and the adhesive sealant (14) is made of PTFE-rubber composite material. The inner wall of the adhesive sealant (14) and the outer wall of the negative pressure pipe (10) are fitted with pressure balls (15) that are evenly distributed in a circle.

4. The negative pressure structure for the dust removal of the calcined magnesium oxide according to claim 3, characterized in that: The negative pressure pipe (10) is also provided with an anti-blocking component, and the anti-blocking component includes a motor (16) installed on the negative pressure pipe (10). An anti-blocking auger (18) is rotatably installed inside the negative pressure pipe (10), and the anti-blocking auger (18) is driven to rotate by the motor (16) through a bevel gear set (17).

5. The negative pressure structure for the dust removal of the calcined magnesium oxide according to claim 4, characterized in that: The inner wall of the negative pressure pipe (10) is formed with two far apart cross-shaped mounting brackets, which are used to support the two sides of the rod of the anti-blocking auger (18).

6. The negative pressure structure for the dust removal of the calcined magnesium oxide according to claim 1, characterized in that: All of these devices are installed on the ground or platform via support frames (19). Multiple sets of support frames (19) are symmetrically distributed from left to right at both ends of the conveying pipe (3), flash dust collector (1), negative pressure pipe (10), induced draft dust collector (6), and front dust collector (7).

7. The negative pressure structure for the dust removal of the calcined magnesium oxide according to claim 6, characterized in that: A reinforcing beam (20) is fixedly connected between the two corresponding support frames (19), and the motor (16) is fixedly installed on the top of a set of support frames (19). The reinforcing beam (20) between the two sets of support frames (19) corresponding to the induced draft dust collector (6) and the front dust collector (7) is supported by the bottom end of the negative pressure pipe (10).

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