A wear-resistant expansion joint on a lime powder pipeline

Abstract

The utility model discloses a kind of wear resistance expansion joints on lime powder pipeline, including lower pipeline and upper pipeline, lower pipeline bottom is fixed, upper pipeline top is fixed, lower pipeline is slidably sleeved in upper pipeline bottom, limiting structure for blocking upper pipeline is provided in lower pipeline, upper pipeline and lower pipeline outside jointly sleeve have a sealing tube, sealing tube top and upper pipeline outer wall are fixed, sealing tube bottom and lower pipeline outer wall are fixed.Wear resistance expansion joint on the lime powder pipeline can make that there is activity allowance between fan shell upper cover and pipeline, it is convenient to fan shell upper cover disassembly replacement internal lining, also have good wear resistance, improve service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to quick -witted lime crushing gas selection technical field, specifically is a kind of wearability expansion joint on lime powder pipeline. BACKGROUND

[0002] Fan exhaust of quick -witted lime crushing gas selection integrated machine and pipeline are connected, for discharging lime powder, blade lining plate needing to be replaced regularly is installed on the blade inside fan, and lining plate needing to be replaced is also installed in the inner wall of fan shell, thus fan shell upper cover needs to be opened regularly, and fan shell upper cover top connects pipeline, and pipeline position is relatively fixed, and fan shell is very difficult to open, thus it needs to design a kind of expansion joint, the expansion joint can exist movable amount between fan shell upper cover and pipeline, and also have good wear resistance. UTILITY MODEL CONTENTS

[0003] The utility model discloses a kind of wearability expansion joint on lime powder pipeline, to solve the problem of lining plate being inconvenient to disassemble and replace in the fan shell described in the above background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of wearability expansion joint on lime powder pipeline, including lower pipeline and upper pipeline, upper pipeline top is fixed, lower pipeline is slidably sleeved in upper pipeline bottom, and limiting structure for blocking upper pipeline is provided in lower pipeline, upper pipeline and lower pipeline outside jointly sleeve one sealing tube, sealing tube top and upper pipeline outer wall are fixed, and sealing tube bottom and lower pipeline outer wall are fixed.

[0005] Preferably, the sealing tube is a rubber bellows.

[0006] Preferably, the sealing tube top is fixed with the upper pipeline by a hoop, and the sealing tube bottom is fixed with the pipeline by a hoop.

[0007] Preferably, the lower pipeline includes pipeline one and pipeline two, the pipeline one is slidably sleeved outside the upper pipeline, the pipeline two is fixed to the inner wall of the pipeline one, the outer diameter of the pipeline two is greater than the outer diameter of the upper pipeline, and the inner diameter of the pipeline two is less than the outer diameter of the upper pipeline.

[0008] Preferably, the bottom of the pipeline two is provided with a connecting flange and fixedly installed with a discharge pipe, and the bottom of the discharge pipe is fixedly installed on the discharge port of the quick -witted lime crushing gas selection integrated machine below.

[0009] Compared with the prior art, the utility model has the advantages that:

[0010] The utility model discloses a kind of wearability expansion joint on lime powder pipeline, by setting expansion joint, the expansion joint can exist movable amount between fan shell upper cover and pipeline, facilitate fan shell upper cover to disassemble and replace internal lining plate, also have good wear resistance, improve service life. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a schematic view of the expansion joint structure in the utility model;

[0012] Figure 2 is Figure 1 is a sectional view;

[0013] Figure 3 is a schematic view of the expansion joint installation;

[0014] Figure 4 is a schematic view of the comparative example structure.

[0015] In the figure: 1, lime crushing and air separation all-in-one machine; 2, discharge pipe; 3, upper pipe; 4, lower pipe; 41, pipe one; 42, pipe two; 5, sealing pipe. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0017] Embodiment one: please refer to Figures 1-3 A wear-resistant expansion joint on a lime powder pipe, which comprises a lower pipe 4 and an upper pipe 3, the upper pipe 3 is fixed at the top, the lower pipe 4 is slidably sleeved at the bottom of the upper pipe 3, a limiting structure for blocking the upper pipe 3 is arranged in the lower pipe 4, a sealing pipe 5 is sleeved on the outer sides of the upper pipe 3 and the lower pipe 4, preferably, the sealing pipe 5 is a rubber bellows, the top of the sealing pipe 5 is fixed to the outer wall of the upper pipe 3, and the bottom of the sealing pipe 5 is fixed to the outer wall of the lower pipe 4.

[0018] Preferably, the top of the sealing pipe 5 is fixed to the upper pipe 3 through a hoop, and the bottom of the sealing pipe 5 is fixed to the pipe two 42 through a hoop.

[0019] The lower pipe 4 comprises a pipe one 41 and a pipe two 42, the pipe one 41 is slidably sleeved on the outer side of the upper pipe 3, the pipe two 42 is fixed to the inner wall of the pipe one 41, the outer diameter of the pipe two 42 is greater than the outer diameter of the upper pipe 3, and the inner diameter of the pipe two 42 is less than the outer diameter of the upper pipe 3.

[0020] The bottom of the pipe two 42 is provided with a connecting flange, and a discharge pipe 2 is fixedly installed on the bottom of the discharge pipe 2, the discharge pipe 2 is fixedly installed on the discharge port of the lime crushing and air separation all-in-one machine 1, and a fan is installed on the lime crushing and air separation all-in-one machine 1.

[0021] Working principle: when in use, the relative movement between the discharge pipe 2 and the lower pipe 4 connected to the upper pipe 3 can make the upper cover of the fan shell be lifted up and separated, and then the lining inside the fan shell can be replaced and maintained. The powder particles in the expansion joint do not contact the sealing pipe 5, and the sealing pipe 5 will not be worn out, so it has a long service life and wear resistance.

[0022] Comparative example: the installation mode of the upper pipe 3 and the lower pipe 4 is as shown in Figure 4 Although the upper pipe 3 and the lower pipe 4 can move relative to each other, the lime powder in the gas will fall into the sealing pipe 5 from the gap between the upper pipe 3 and the lower pipe 4 and fill the sealing pipe 5, which not only affects the sealing of the sealing pipe 5, but also hinders the relative movement between the upper pipe 3 and the lower pipe 4. Therefore, the design structure in example one also has certain ingenuity.

Claims

1. A wear-resistant expansion joint for a lime powder pipeline, comprising a lower pipeline (4) and an upper pipeline (3), wherein the top of the upper pipeline (3) is fixed, characterized in that: The lower pipe (4) is slidably sleeved at the bottom of the upper pipe (3). A limiting structure for blocking the upper pipe (3) is provided inside the lower pipe (4). A sealing pipe (5) is sleeved on the outside of the upper pipe (3) and the lower pipe (4). The top of the sealing pipe (5) is fixed to the outer wall of the upper pipe (3), and the bottom of the sealing pipe (5) is fixed to the outer wall of the lower pipe (4).

2. The wear-resistant expansion joint for lime powder pipelines according to claim 1, characterized in that: The sealing tube (5) is a rubber corrugated tube.

3. The wear-resistant expansion joint for a lime powder pipeline according to claim 2, characterized in that: The top of the sealing tube (5) is fixed by a clamp and the upper pipe (3), and the bottom of the sealing tube (5) is sealed and fixed by a clamp and the second pipe (42).

4. The wear-resistant expansion joint for a lime powder pipeline according to claim 3, characterized in that: The lower pipe (4) includes pipe one (41) and pipe two (42). Pipe one (41) is slidably sleeved on the outside of the upper pipe (3). Pipe two (42) is fixed on the inner wall of pipe one (41). The outer diameter of pipe two (42) is greater than the outer diameter of the upper pipe (3), and the inner diameter of pipe two (42) is smaller than the outer diameter of the upper pipe (3).

5. The wear-resistant expansion joint for a lime powder pipeline according to claim 4, characterized in that: Pipeline 2 (42) has a connecting flange at the bottom and a discharge pipe (2) is fixedly installed. The bottom of the discharge pipe (2) is fixedly installed on the discharge port of the quicklime crushing and gas separation integrated machine (1) below.

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