Perlite expansion furnace waste heat utilization device

Abstract

The utility model discloses a perlite expansion furnace waste heat utilization device which comprises a box body, a stock bin is fixedly connected in the box body, a plurality of through holes are formed in the outer side of the stock bin, a spiral piece is arranged between the box body and the stock bin, and the area between the box body and the stock bin is divided by the spiral piece to form a spiral channel. The outer side of the spiral piece is fixedly connected with the inner wall of the box body, the inner side of the spiral piece is fixedly connected with the outer wall of the stock bin, the top of the box body is communicated with a hopper, and the right side of the box body is communicated with a discharging pipe located below the spiral piece. The air bellow, the motor, the fan blades, the air inlet pipe and the air outlet pipe are matched, hot air circularly flows between the box body and the stock bin, the hot air is not prone to being directly discharged out of the box body from the discharging pipe along with perlite, the hot air loss speed is slowed down, the heat loss is reduced, and the waste heat utilization effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of perlite processing, and in particular relates to a device for utilizing waste heat from a perlite expansion furnace. Background Art

[0002] Patent application number 202222140353.4 discloses a waste heat recovery device for a perlite expansion furnace, including a silo, a connecting pipe, a shell, and a stirring sleeve. The device uses a motor to drive the stirring sleeve and the fan blades to rotate, and the hot air inside the silo is sucked into the heat storage chamber. The hot air is evenly dispersed to the interior of the stirring chamber through the transfer hole to cooperate with the stirring sleeve to preheat the perlite, thereby making full use of the waste heat generated during the perlite processing and avoiding energy waste.

[0003] The above disclosed technical solution can use the heat of the expanded perlite in the silo to preheat the unprocessed perlite. Although it can realize waste heat recovery and utilization, it still has defects. The main defect is that when the hot air in the silo enters the stirring chamber to preheat the perlite, the hot air will be pushed by the fan blades, causing a large amount of hot air to be directly discharged from the openings of the heat storage chamber and the stirring chamber, resulting in a fast loss of hot air, and then a large heat loss, which reduces the waste heat utilization effect. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model provides a waste heat utilization device of a perlite expansion furnace.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for utilizing waste heat from a perlite expansion furnace comprises a box body, a silo is fixedly connected to the box body, a plurality of through holes are opened on the outside of the silo, a spiral sheet is arranged between the box body and the silo, and the area between the box body and the silo is divided by the spiral sheet to form a spiral channel, the outside of the spiral sheet is fixedly connected to the inner wall of the box body, the inside of the spiral sheet is fixedly connected to the outer wall of the silo, the top of the box body is connected to a hopper, the right side of the box body is connected to a discharge pipe located below the spiral sheet, the right side of the box body is fixedly connected to a bellows, the right side of the box body is provided with a motor, the output shaft of the motor extends into the bellows and is fixedly connected to a fan blade, the left side of the bellows is connected to an air inlet pipe, the air inlet end of the air inlet pipe extends into the box body and is located above the discharge pipe, the right side of the bellows is connected to an air outlet pipe, and the air outlet end of the air outlet pipe is connected to the silo.

[0007] Furthermore, a backing plate is fixedly connected to the right side of the box body, and the motor is fixedly connected to the backing plate.

[0008] Furthermore, a mesh cover is fixedly sleeved at the air inlet end of the air inlet pipe.

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

[0010] 1. Through the box, silo and spiral blades, the unprocessed perlite moves in the spiral channel and is preheated by the hot air in the silo. The hot air circulates between the box and the silo with the help of the bellows, motor, fan blades, air inlet pipe and air outlet pipe, making it difficult for the hot air to be discharged directly from the discharge pipe out of the box along with the perlite, thereby slowing down the loss of hot air, thereby reducing heat loss and improving the effect of waste heat utilization.

[0011] 2. The pad makes it difficult for the heat on the box to be transferred to the motor. Compared with the motor directly contacting the heat in the public technology, the service life of the motor can be increased.

[0012] 3. The mesh cover prevents the preheated perlite from being sucked into the air inlet pipe during discharge, thus avoiding the blockage of the air inlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model.

[0014] In the figure: 1 box body, 2 silo, 3 spiral blade, 4 hopper, 5 discharge pipe, 6 bellows, 7 motor, 8 fan blade, 9 air inlet pipe, 10 air outlet pipe, 11 pad, 12 mesh cover. 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 them. 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] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. Example

[0017] See attached Figure 1As shown, a waste heat utilization device of a perlite expansion furnace comprises a box body 1, a silo 2 is fixedly connected to the box body 1, a plurality of through holes are opened on the outer side of the silo 2, a spiral sheet 3 is arranged between the box body 1 and the silo 2, and the area between the box body 1 and the silo 2 is divided by the spiral sheet 3 to form a spiral channel, the outer side of the spiral sheet 3 is fixedly connected to the inner wall of the box body 1, the inner side of the spiral sheet 3 is fixedly connected to the outer wall of the silo 2, the top of the box body 1 is connected with a hopper 4, the right side of the box body 1 is connected with a discharge pipe 5 located below the spiral sheet 3, the right side of the box body 1 is fixedly connected with a bellows 6, the right side of the box body 1 is provided with a motor 7, the output shaft of the motor 7 extends into the bellows 6 and is fixedly connected with a fan blade 8, the left side of the bellows 6 is connected with an air inlet pipe 9, the air inlet end of the air inlet pipe 9 extends into the box body 1 and is located above the discharge pipe 5, the right side of the bellows 6 is connected with an air outlet pipe 10, and the air outlet end of the air outlet pipe 10 is connected with the silo 2.

[0018] A backing plate 11 is fixedly connected to the right side of the box body 1 , and the motor 7 is fixedly connected to the backing plate 11 . The backing plate 11 prevents the heat on the box body 1 from being directly conducted to the motor 7 .

[0019] A mesh cover 12 is fixedly sleeved at the air inlet end of the air inlet pipe 9 , and the mesh cover 12 prevents the perlite from being sucked into the air inlet pipe 9 .

[0020] Working principle: In the utility model, the expanded perlite is placed in the silo 2 from the feed port above the silo 2, and the upper opening is closed. The through hole on the silo 2 is smaller than the size of the perlite. The preheated perlite is placed in the hopper 4, and the upper opening is closed. The perlite in the hopper 4 goes down into the box 1. The perlite in the box 1 slides down along the spiral channel formed by the spiral blade 3. At the same time, the motor 7 is started to drive the fan blade 8 to rotate. The rotating fan blade 8 inhales the gas in the box 1 through the air inlet pipe 9. The gas passes through The bellows 6 blows from the air outlet pipe 10 into the silo 2, and the airflow blows the hot air in the silo 2 into the spiral channel from a number of through holes to preheat the sliding perlite. After the preheated perlite reaches the bottom of the spiral channel, it is discharged from the box body 1 from the discharge pipe 5. Because the opening of the discharge pipe 5 needs to be open for discharge, the airflow in the box body 1 will flow to the discharge pipe 5. The air inlet pipe 9 located above the discharge pipe 5 will re-inhale the airflow to prevent the hot air from being discharged directly. Then the hot air circulates between the box body 1 and the silo 2 to preheat the perlite.

[0021] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0022] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A waste heat utilization device for a perlite expansion furnace, comprising a housing (1), characterized in that: A silo (2) is fixedly connected to the box body (1), a plurality of through holes are provided on the outside of the silo (2), a spiral blade (3) is provided between the box body (1) and the silo (2), and the area between the box body (1) and the silo (2) is divided by the spiral blade (3) to form a spiral channel, the outside of the spiral blade (3) is fixedly connected to the inner wall of the box body (1), the inside of the spiral blade (3) is fixedly connected to the outer wall of the silo (2), the top of the box body (1) is connected to a hopper (4), and the right side of the box body (1) is connected to a spiral blade (3) located at the bottom of the spiral blade (3). The box (1) is provided with a discharge pipe (5) below the sheet (3), a bellows (6) is fixedly connected to the right side of the box (1), a motor (7) is arranged on the right side of the box (1), an output shaft of the motor (7) extends into the bellows (6) and is fixedly connected to a fan blade (8), an air inlet pipe (9) is connected to the left side of the bellows (6), an air inlet end of the air inlet pipe (9) extends into the box (1) and is located above the discharge pipe (5), an air outlet pipe (10) is connected to the right side of the bellows (6), and an air outlet end of the air outlet pipe (10) is connected to the silo (2).

2. A pearlite expansion furnace waste heat utilization device according to claim 1, characterized in that: A backing plate (11) is fixedly connected to the right side of the box body (1), and the motor (7) is fixedly connected to the backing plate (11).

3. A pearlite expansion furnace waste heat utilization device according to claim 1, characterized in that: A mesh cover (12) is fixedly sleeved at the air inlet end of the air inlet pipe (9).

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