Solid waste powdery material preheating cyclone dust collector

Abstract

The utility model discloses a solid waste powdery material preheating cyclone dust collector which comprises a machine shell body, an air inlet used for high-temperature waste gas to flow in is formed in the machine shell body, and a dust discharging opening is formed in the bottom of the machine shell body. The central air duct is arranged in the cavity of the machine shell, and an air outlet is formed in the upper end of the central air duct; the preheating inner spiral surrounds the central air duct, a spiral inner channel is arranged in a cavity of the preheating inner spiral, a feeding port is formed in the upper end of the preheating inner spiral, a discharging port is formed in the lower end of the preheating inner spiral, and the feeding port and the discharging port are communicated with the spiral inner channel. Solid waste powder is preheated by high-temperature heat of waste gas, and part of water in the solid waste powder is evaporated in advance, so that the flowability of the powder is improved, and the fuel consumption of a dried sand production line is reduced; therefore, the problems of waste of waste gas heat of the cyclone dust collector and overhigh air temperature of the air outlet in a common dried sand production line and a production line for producing dried sand by using waste thermal insulation materials are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection, in particular to a solid waste powder material preheating cyclone dust collector. Background Art

[0002] In ordinary drying sand production lines and production lines that use waste insulation materials to produce drying sand, a large amount of harmful high-temperature gas and dust are generated in the dryer. These exhaust gases need to be purified in two stages by cyclone dust collectors and bag dust collectors. When the exhaust gases pass through the cyclone dust collector, the temperature is 200-500 degrees Celsius. While the dust is falling in the cyclone dust collector, a large amount of heat is released. This heat is released outward through the cyclone dust collector cylinder and is wasted. At the same time, it is not used for sufficient heat exchange, resulting in excessively high air temperature at the exhaust outlet of the cyclone dust collector, which affects the next-level bag dust collector. Utility Model Content

[0003] The purpose of the utility model is to provide a solid waste powder preheating cyclone dust collector, which utilizes the high temperature heat of exhaust gas to preheat the solid waste powder, evaporates part of the water in the solid waste powder in advance, improves the fluidity of the powder and reduces the fuel consumption of the drying sand production line, so as to solve the problems of waste heat of exhaust gas and excessively high air temperature at the exhaust port of the cyclone dust collector in ordinary drying sand production lines and production lines for producing drying sand using waste insulation materials.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a solid waste powder preheating cyclone dust collector, comprising a machine body, a preheating inner spiral and a central air duct, the machine body is provided with an air inlet for the inflow of high-temperature exhaust gas, and the bottom of the machine body is provided with an ash discharge port; the central air duct is arranged in the cavity of the machine body, and the upper end of the central air duct is provided with an exhaust port; the preheating inner spiral surrounds the central air duct, the cavity of the preheating inner spiral is provided with a spiral inner channel, a feed port is provided at the upper end of the preheating inner spiral, and a discharge port is provided at the lower end of the preheating inner spiral, and the feed port and the discharge port are mutually connected with the spiral inner channel.

[0005] Preferably, the casing is a double-layer structure made of carbon structural steel, with a heat-insulating layer made of aluminum silicate fiber felt filled in the middle.

[0006] Preferably, the exhaust port on the central air duct is externally connected to an air duct, the other end of the air duct is connected to an induced draft fan, the induced draft fan is connected to an exhaust duct, and the other end of the exhaust duct is externally connected to a bag dust collector.

[0007] Preferably, a screw feeder, a disc feeder or a vibrating feeder for uniform feeding can be installed at the feed inlet at the upper end of the preheating inner spiral.

[0008] Preferably, the air inlet may also be connected to the dust hood of the drying chamber via an external air duct.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] The solid waste powder preheating cyclone dust collector utilizes the high temperature heat of the exhaust gas to preheat the solid waste powder, evaporates part of the water in the solid waste powder in advance, improves the fluidity of the powder and reduces the fuel consumption of the drying sand production line, thereby solving the problem of waste heat of the exhaust gas of the cyclone dust collector and excessively high air temperature at the exhaust port in ordinary drying sand production lines and production lines that produce drying sand using waste insulation materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view of the overall structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the overall structural pipeline connection of the utility model;

[0013] Figure 3 It is a three-dimensional diagram of the overall structure of the utility model.

[0014] In the figure: 1. machine casing; 101. air inlet; 102. ash discharge port; 2. preheating inner spiral; 201. feed port; 202. discharge port; 203. spiral inner channel; 3. central air duct; 301. exhaust port; 4. insulation layer; 5. air duct; 6. induced draft fan; 7. exhaust duct. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-3A solid waste powder preheating cyclone dust collector provided in this embodiment includes a machine casing 1, a preheating inner spiral 2 and a central air duct 3. The machine casing 1 is a double-layer structure made of carbon structural steel, and an insulation layer 4 made of aluminum silicate fiber felt is filled in the middle. The machine casing 1 is provided with an air inlet 101 for high-temperature exhaust gas to flow in, and the air inlet 101 can also be connected to the dust removal cover of the drying chamber through an external air duct 5; an ash discharge port 102 is provided at the bottom of the machine casing 1; the central air duct 3 is arranged in the cavity of the machine casing 1, and an exhaust port 301 is provided at the upper end of the central air duct 3; the preheating inner spiral 2 surrounds the central air duct 3, and the cavity of the preheating inner spiral 2 is set as a spiral inner channel 203, a feed port 201 is provided at the upper end of the preheating inner spiral 2, and a discharge port 202 is provided at the lower end of the preheating inner spiral 2, and the feed port 201 and the discharge port 202 are both interconnected with the spiral inner channel 203.

[0017] In this embodiment, the exhaust port 301 on the central air tube 3 is externally connected to the air duct 5, the other end of the air duct 5 is connected to the induced draft fan 6, the induced draft fan 6 is connected to the exhaust duct 7, and the other end of the exhaust duct 7 is externally connected to the bag dust collector; the reason why the high-temperature exhaust gas can enter from the air inlet 101 and then be discharged from the exhaust port 301 is that the exhaust port 301 is externally connected to the air duct 5 and the induced draft fan 6, and the negative pressure generated by the centrifugal induced draft fan 6 causes the high-temperature exhaust gas to flow in this dust collector.

[0018] In this embodiment, a screw feeder, a disc feeder or a vibrating feeder for uniform feeding can be installed at the feed port 201 at the upper end of the preheating inner spiral 2, thereby meeting the requirement of the utility model that the solid waste powder enters the feed port 201 of the cyclone dust collector at a uniform speed.

[0019] Working principle: In the solid waste powder preheating cyclone dust collector, high-temperature exhaust gas enters the cyclone dust collector through the air inlet 101, and the high-temperature hot air rotates downward at a high speed in the same direction as the preheating inner spiral 2 in the machine casing 1 to reach the bottom of the machine casing 1. After the dust particles accumulate at the bottom of the machine casing 1, the dust-reduced exhaust gas passes through the central wind tube 3 and is discharged from the exhaust port 301 upward. In the process of high-temperature exhaust gas entering and being discharged, heat enters the preheating inner spiral 2; wherein, the solid waste powder enters the cyclone dust collector feed port 201 at a uniform speed, slides down at a uniform speed in the spiral inner channel 203, and the powder is evenly heated during the sliding process. The heated powder is discharged from the discharge port 202 at the bottom of the preheating inner spiral 2.

[0020] In summary: the solid waste powder preheating cyclone dust collector utilizes the high temperature heat of the exhaust gas to preheat the solid waste powder, evaporates part of the water in the solid waste powder in advance, improves the fluidity of the powder and reduces the fuel consumption of the drying sand production line, thereby solving the problem of waste heat of the exhaust gas of the cyclone dust collector and excessively high air temperature at the exhaust port in ordinary drying sand production lines and production lines that produce drying sand using waste insulation materials.

[0021] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0022] 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 solid waste powder preheating cyclone dust collector, comprising a housing (1), a preheating inner spiral (2) and a central air cylinder (3), characterized in that: The casing (1) is provided with an air inlet (101) for high-temperature exhaust gas to flow in, and the bottom of the casing (1) is provided with an ash discharge port (102); the central air duct (3) is arranged in the cavity of the casing (1), and the upper end of the central air duct (3) is provided with an air outlet (301); the preheating inner spiral (2) surrounds the central air duct (3), the cavity of the preheating inner spiral (2) is provided with a spiral inner channel (203), the upper end of the preheating inner spiral (2) is provided with a feed port (201), and the lower end of the preheating inner spiral (2) is provided with a discharge port (202), and the feed port (201) and the discharge port (202) are both interconnected with the spiral inner channel (203).

2. A solid waste powder preheating cyclone dust collector according to claim 1, characterized in that: The machine housing (1) is a double-layer structure made of carbon structural steel, with a heat-insulating layer (4) made of aluminum silicate fiber felt filled in the middle.

3. A solid waste powder preheating cyclone dust collector according to claim 2, characterized in that: The exhaust port (301) on the central air tube (3) is externally connected to an air duct (5), the other end of the air duct (5) is connected to an induced draft fan (6), the induced draft fan (6) is connected to an exhaust duct (7), and the other end of the exhaust duct (7) is externally connected to a bag dust collector.

4. The solid waste powder preheating cyclone dust collector according to claim 1, characterized in that: A screw feeder, a disc feeder or a vibrating feeder for uniform feeding can be installed at the feed inlet (201) at the upper end of the preheating inner spiral (2).

5. The solid waste powder preheating cyclone dust collector according to claim 3, characterized in that: The air inlet (101) can also be connected to the dust removal hood of the drying chamber via an external air duct (5).

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