Novel slurry return baffle device

Abstract

The invention discloses a novel slurry return baffle device which comprises an atomizer main shaft driven to rotate, a guide bearing used for transmission is installed on the atomizer main shaft, an inner feed liquid distributor used for drainage is further arranged on the outer side of the guide bearing, an atomizer skirt cover used for protection is further arranged on the outer side of the inner feed liquid distributor, and the atomizer skirt cover is arranged on the outer side of the atomizer main shaft. In addition, an atomizing wheel used for atomizing and spraying is installed at the bottom of the atomizer main shaft, and a slurry blocking ring assembly used for blocking liquid from flowing back is arranged between the inner material liquid distributor and the atomizing wheel. The baffle is additionally arranged at the position of the main shaft and the labyrinth seal, slurry is prevented from entering, the main shaft is not damaged during working, falling is avoided during high-speed rotation, corrosion resistance is achieved, the slurry can be prevented from entering a main shaft oil tank in the using process, and therefore pollution of lubricating oil in the main shaft oil tank is avoided, and meanwhile the service life of the device is prolonged. And atomized feed liquid can be better sprayed out in the desulfurization system, so that the practicability of the device is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of atomizers, and in particular relates to a novel slurry return baffle device. Background Art

[0002] In the SDA desulfurization system, when the atomizer is in operation, the slurry in the top tank flows by its own weight along the lower slurry pipe to the volute casing for diversion, reaches the slurry bottom plate, enters the internal liquid distributor, and enters the atomizing wheel. The high-speed operation of the atomizer main shaft drives the atomizing wheel to rotate, and the slurry is sprayed out from the nozzle of the atomizing wheel and atomized, reacting with the flue gas in the desulfurization tower to remove sulfur dioxide in the flue gas.

[0003] The patent with application number 201922147458.0 discloses a mining return baffle device with a return slurry prompt. The application is designed with a water level sensor to remind on-site construction personnel that the grouting slurry is about to return. A return slurry tank made of high-strength acrylic material is designed to facilitate on-site construction personnel to observe the return slurry. A slurry recovery pipe is designed to return the return slurry to the slurry mixing barrel, which reduces slurry waste and construction costs. It effectively solves the problem that the high-speed spraying of slurry poses a huge safety hazard to on-site construction personnel and pollutes the construction site environment; combined with this application, and in connection with the existing atomizer when it is running, during the spraying process of the atomizer, due to the unstable sulfur content at the flue gas inlet, the sulfur content sometimes suddenly increases, and the slurry discharge amount of the atomizer needs to be increased simultaneously. In the process of sudden increase, the slurry fails to be sprayed out from the atomizing wheel, resulting in the return of the slurry, causing the lubricating oil pollution of the atomizer spindle oil tank, affecting the life of key equipment, and seriously causing equipment damage and excessive sulfur content. For this reason, we propose a new type of return slurry baffle device. Summary of the invention

[0004] The purpose of the present invention is to provide a novel return slurry baffle device to solve the problem that when the existing atomizer is in operation and during the atomizer spraying process, the sulfur content at the flue gas inlet is unstable, and sometimes the sulfur content suddenly increases, and it is necessary to increase the slurry discharge amount of the atomizer simultaneously. During the sudden increase, the slurry fails to be sprayed out from the atomizing wheel, resulting in the return of the slurry, causing the lubricating oil of the atomizer main shaft oil tank to be contaminated, affecting the life of key equipment, and seriously causing equipment damage and excessive sulfur content.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new type of return slurry baffle device, including a rotating atomizer main shaft, a transmission guide bearing installed on the atomizer main shaft, an inner liquid distributor for drainage is also arranged on the outer side of the guide bearing, an atomizer skirt cover for protection is also arranged on the outer side of the inner liquid distributor, an atomizer wheel for atomization spraying is installed at the bottom of the atomizer main shaft, and a slurry retaining ring assembly for preventing liquid backflow is arranged between the inner liquid distributor and the atomizing wheel.

[0006] Preferably, the slurry retaining ring assembly comprises an inner positioning baffle and an outer liquid retaining plate, wherein the inner positioning baffle is installed on one side of the inner liquid distributor, and the outer liquid retaining plate is arranged on one side of the atomizing wheel.

[0007] Preferably, a backlog sealing ring is provided between the inner positioning baffle plate and the outer liquid baffle plate.

[0008] Preferably, bolts are provided at one side edge of the inner positioning baffle plate and the outer liquid baffle plate for fixing.

[0009] Preferably, a volute casing is provided at the outer top of the inner liquid distributor on the atomizer main shaft, a liquid bottom plate is provided at the outer bottom of the inner liquid distributor, a liquid top plate is also installed on the top of the volute casing, and the liquid top plate is used to connect and fix the down slurry pipe in the atomizer liquid system.

[0010] Preferably, a water distribution ring is fixedly installed on the outer bottom of the slurry bottom plate, and a copper pipe joint is installed on one side of the water distribution ring.

[0011] Preferably, a guide shaft seat is installed on the atomizer main shaft on the inner side of the inner liquid distributor, a butterfly spring is installed on the top of the guide shaft seat, a guide sleeve is installed on the top of the butterfly spring, and the guide bearing is installed on the inner side of the guide sleeve.

[0012] Preferably, the guide sleeve comprises an upper sleeve and a lower sleeve, and the upper sleeve and the lower sleeve are installed by plugging.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) A baffle is added between the main shaft and the labyrinth seal to prevent the slurry from entering. Since the main shaft in the existing equipment rotates at a high speed and is accompanied by swinging, the baffle cannot collide with the main shaft. The baffle is installed on the main shaft, does not damage the main shaft during operation, does not fall off at high speed, and is corrosion-resistant. Two baffles of different sizes made of 316 stainless steel are used, and the friction is increased by the backlog sealing ring. The baffle is fixed on the main shaft. During use, the slurry can be prevented from entering the main shaft oil tank, thereby avoiding the contamination of the lubricating oil in the main shaft oil tank. At the same time, the service life of the device is increased, and the atomized liquid can be better sprayed in the desulfurization system, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 3 For the present invention Figure 1 A schematic diagram of the enlarged structure at B in the middle;

[0018] In the figure: 100, atomizer main shaft; 101, atomizer skirt; 102, internal liquid distributor; 103, liquid top plate; 104, volute casing; 105, liquid bottom plate; 106, water distribution ring; 107, copper pipe joint; 200, guide shaft seat; 201, butterfly spring; 202, guide sleeve; 221, upper sleeve; 222, lower sleeve; 203, guide bearing; 300, slurry retaining ring assembly; 301, inner positioning baffle; 302, backlog sealing ring; 303, bolt; 304, outer liquid retaining plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Embodiment 1

[0021] See also Figure 1 , Figure 2 and Figure 3The present invention provides a technical solution: a novel slurry return baffle device, including a rotating atomizer main shaft 100, a transmission guide bearing 203 is installed on the atomizer main shaft 100, an inner liquid distributor 102 for drainage is also arranged on the outer side of the guide bearing 203, an atomizer skirt cover 101 for protection is also arranged on the outer side of the inner liquid distributor 102, an atomizer wheel for atomization spraying is installed at the bottom of the atomizer main shaft 100, and a slurry retaining ring assembly 300 for preventing liquid backflow is arranged between the inner liquid distributor 102 and the atomizing wheel. During the operation of the atomizer in the application, the slurry in the top tank flows into the volute casing 104 along the lower slurry pipe by its own weight for diversion, and the lower slurry The tube is fixed by the liquid top plate 103, reaches the liquid bottom plate 105, and enters the internal liquid distributor 102, and then enters the atomizing wheel installed at the bottom of the atomizer main shaft 100 from the outlet opened at the bottom of the internal liquid distributor 102. The atomizing wheel is driven to rotate by the high-speed operation of the atomizer main shaft 100, and the liquid is sprayed out from the nozzle of the atomizing wheel to be atomized, and reacts with the flue gas in the desulfurization tower to desulfurize the sulfur dioxide in the flue gas. The new type of slurry return baffle device is set to prevent the slurry from returning to the main shaft oil tank when the slurry amount suddenly increases, and at the same time avoid damage to the device, thereby improving the service life, and can better spray the atomized liquid in the desulfurization system for desulfurization, thereby improving the practicability of the device.

[0022] Specifically, the slurry retaining ring assembly 300 includes an inner positioning baffle plate 301 and an outer liquid retaining plate 304. The inner positioning baffle plate 301 is installed on one side of the inner liquid distributor 102, and the outer liquid retaining plate 304 is installed on one side of the atomizing wheel. A backlog sealing ring 302 is arranged between the inner positioning baffle plate 301 and the outer liquid retaining plate 304 to increase friction. Bolts 303 are also arranged at one side edge of the inner positioning baffle plate 301 and the outer liquid retaining plate 304 for fixing to better ensure the stability of the structure, avoid damaging the main shaft during use, and prevent it from falling off during high-speed rotation. When it flows out from the outlet at the bottom of the inner liquid distributor 102, due to the unstable sulfur content at the flue gas inlet, if the sulfur content in the flue gas suddenly increases, it is necessary to increase the slurry discharge amount of the atomizer synchronously. In the process of sudden increase, When the slurry fails to be sprayed out from the atomizing wheel, the outflowing liquid will return to the slurry, and the liquid will enter the main shaft oil tank along the gap between the atomizer main shaft 100 and the labyrinth seal, causing lubricating oil pollution in the atomizer main shaft oil tank. By setting a slurry retaining ring assembly 300 on the atomizer main shaft 100 and located on the inner liquid distributor 102 and the atomizing wheel, the slurry retaining ring assembly 300 is composed of an inner positioning baffle plate 301 and an outer liquid retaining plate 304, and in order to increase friction and stabilize the installation between the inner positioning baffle plate 301 and the outer liquid retaining plate 304, the backlog sealing ring 302 and the bolt 303 can ensure the stability of the structure of the slurry retaining ring assembly 300. Through the action of the slurry retaining ring assembly 300, when the liquid suddenly increases, the excess liquid that has not been sprayed can be prevented from entering the main shaft oil tank along the atomizer main shaft 100, thereby improving the practicability of the device.

[0023] Embodiment 2

[0024] See also Figure 1 and Figure 2 The present invention provides a technical solution: a novel return slurry baffle device, a volute casing 104 is provided on the outer top of the inner liquid distributor 102 on the atomizer main shaft 100, the volute casing 104 is used for diversion to ensure uniform distribution of liquid, a liquid bottom plate 105 is provided on the outer bottom of the inner liquid distributor 102, a liquid top plate 103 is also installed on the top of the volute casing 104, and the liquid top plate 103 is used to connect and fix the lower slurry pipe in the liquid system of the atomizer, specifically, a water distribution ring 106 is fixedly installed on the outer bottom of the liquid bottom plate 105, a copper pipe joint 107 is installed on one side of the water distribution ring 106, and the copper pipe joint 107 is used to connect the matching wheel protection water copper pipe.

[0025] Embodiment 3

[0026] See also Figure 1 and Figure 3The present invention provides a technical solution: a novel return slurry baffle device, a guide shaft seat 200 is fixedly installed on the inner side of the inner liquid distributor 102 on the atomizer main shaft 100, a butterfly spring 201 is installed on the top of the guide shaft seat 200, and a guide shaft sleeve 202 is installed on the top of the butterfly spring 201. The butterfly spring 201 is arranged between the guide shaft seat 200 and the guide shaft sleeve 202 to play a certain buffering role. The guide bearing 203 is installed on the inner side of the guide shaft sleeve 202 for better rotation. At the same time, the guide shaft sleeve 202 includes an upper shaft sleeve 221 and a lower shaft sleeve 222, and the upper shaft sleeve 221 and the lower shaft sleeve 222 are installed by plug-in connection. The plug-in connection method is convenient for disassembly and assembly of the guide shaft sleeve 202, and at the same time, it is convenient to inspect and replace the guide bearing 203, thereby improving the practicality of the device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel slurry return baffle device, characterized in that: The invention comprises an atomizer main shaft (100) for driving rotation, a guide bearing (203) for transmission is installed on the atomizer main shaft (100), an inner liquid distributor (102) for drainage is also arranged on the outer side of the guide bearing (203), an atomizer skirt cover (101) for protection is also arranged on the outer side of the inner liquid distributor (102), an atomizer wheel for atomizing and spraying is installed at the bottom of the atomizer main shaft (100), and a slurry retaining ring assembly (300) for preventing liquid backflow is arranged between the inner liquid distributor (102) and the atomizer wheel.

2. A novel slurry return baffle device according to claim 1, characterized in that: The slurry retaining ring assembly (300) comprises an inner positioning baffle (301) and an outer liquid retaining plate (304), wherein the inner positioning baffle (301) is installed on one side of the inner liquid distributor (102), and the outer liquid retaining plate (304) is arranged on one side of the atomizing wheel.

3. A novel slurry return baffle device according to claim 2, characterized in that: A backlog sealing ring (302) is provided between the inner positioning baffle plate (301) and the outer liquid baffle plate (304).

4. A novel slurry return baffle device according to claim 2, characterized in that: Bolts (303) are also provided at one side edge of the inner positioning baffle plate (301) and the outer liquid baffle plate (304) for fixing.

5. A novel slurry return baffle device according to claim 1, characterized in that: A volute casing (104) is provided on the outer top of the inner liquid distributor (102) on the atomizer main shaft (100), a liquid bottom plate (105) is provided on the outer bottom of the inner liquid distributor (102), and a liquid top plate (103) is also installed on the top of the volute casing (104), and the liquid top plate (103) is used to connect and fix the lower slurry pipe in the liquid system of the atomizer.

6. A novel slurry return baffle device according to claim 5, characterized in that: A water distribution ring (106) is fixedly installed on the outer bottom of the liquid bottom plate (105), and a copper pipe joint (107) is installed on one side of the water distribution ring (106).

7. A novel slurry return baffle device according to claim 1, characterized in that: A guide shaft seat (200) is installed on the atomizer main shaft (100) on the inner side of the internal liquid distributor (102), a butterfly spring (201) is installed on the top of the guide shaft seat (200), a guide shaft sleeve (202) is installed on the top of the butterfly spring (201), and the guide bearing (203) is installed on the inner side of the guide shaft sleeve (202).

8. A novel slurry return baffle device according to claim 7, characterized in that: The guide sleeve (202) comprises an upper sleeve (221) and a lower sleeve (222), and the upper sleeve (221) and the lower sleeve (222) are installed by plugging.

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