Energy-saving and consumption-reducing preheating bun baking device

Abstract

The present invention provides an energy-saving and consumption-reducing preheating type bag baking device, comprising: a heat preservation bag, with an inlet on the upper surface and an air outlet on the side wall; a support, with a cover arranged on the inlet and a socket on the surface; a burner, inserted in the socket, with an igniter built in, an air inlet end connected to a natural gas source, and an injection end facing the inlet; a heat preservation box, mounted above the support, with a plug interface on the bottom surface, a sleeve protruding on the side wall, the sleeve sleeved on the air outlet, an air inlet and an exhaust port spaced apart on the upper surface, and an exhaust pipe inserted in the exhaust port; a coil, vertically arranged inside the heat preservation box, an air inlet pipe extending above the heat preservation box, and an air outlet pipe inserted into the burner; a combustion-supporting fan, with an air outlet connected to the air inlet pipe; a grid plate, mounted inside the coil, and provided with a plurality of heat storage balls. The bag baking device can achieve energy conservation and emission reduction, cost reduction and efficiency improvement, and can reutilize the heat discharged during the preheating process of the heat preservation bag, reduce energy loss, and thus reduce the ambient temperature.

Description

Technical Field

[0001] The invention belongs to the technical field of casting material heating, and in particular relates to an energy-saving and consumption-reducing preheating type bun baking device. Background Art

[0002] Aluminum and its alloys have many excellent physical and chemical properties, and therefore have been widely used in countries around the world.

[0003] Common primary aluminum alloy materials in the aluminum industry are divided into aluminum ingots, aluminum bars and aluminum liquid (liquid aluminum alloy). Liquid aluminum is a material model that came into being to reduce the energy consumption generated by the secondary melting of solid aluminum alloy materials. In the production process of aluminum liquid, there is a packaging preheating process called insulation bag preheating. The purpose of this process is to preheat the insulation container loaded with aluminum liquid to the temperature required by the process.

[0004] The existing insulation bag preheating device has the following two disadvantages in the process of preheating the insulation bag due to its backward technology:

[0005] On the one hand: the preheating process of the insulation bag cannot recycle the waste heat in the exhaust, and the loss of heat indirectly leads to an increase in energy consumption costs;

[0006] On the other hand: the waste heat during the preheating process of the insulation bag is directly discharged, and the heat is directly dissipated into the working space, causing the ambient temperature to rise, which has a bad effect on the health of the operators. Summary of the invention

[0007] In order to solve the above-mentioned problems, the purpose of the present invention is to provide an energy-saving and consumption-reducing preheating bun baking device, which can achieve energy conservation and emission reduction, reduce costs and increase efficiency, and can reutilize the heat emitted during the preheating process of the insulation bag, thereby reducing energy loss and further reducing the surrounding ambient temperature.

[0008] To achieve the above object, the technical solution of the present invention is:

[0009] 1. The method of claim 1, wherein the ventilator is provided with an air outlet connected to the inner side of the heat preservation bag and the ventilator is provided with an air outlet connected to the inner side of the heat preservation bag ... The air outlet nozzle is sleeved on the air outlet nozzle, and an air inlet and an air outlet are spaced apart on the upper surface of the heat preservation box, and an exhaust pipe is inserted in the exhaust port; the coil is shaped like a tube body which spirally winds from top to bottom, and the coil is vertically arranged on the inner side of the heat preservation box, the upper end of the coil is the air inlet pipe, and the lower end of the coil is the air outlet pipe, the air inlet pipe of the coil extends from the air inlet to above the upper surface of the heat preservation box, and the air outlet pipe of the coil is sequentially inserted in the plug interface and the socket and inserted into the burner; a combustion-supporting fan is arranged on the outer side of the heat preservation box, and the air outlet end of the combustion-supporting fan is connected to the air inlet pipe of the coil extending above the upper surface of the heat preservation box; a grid plate is erected on the inner side of the coil between the air inlet pipe and the air outlet pipe, and a plurality of heat storage balls are arranged in the grid plate.

[0010] Furthermore, the sleeve and the insulation box are an integrated structure, and the sleeve is bent at one end away from the insulation box toward one end of the air outlet of the insulation bag to form a bending portion, and the sleeve is sleeved on the air outlet of the insulation bag through the bending portion.

[0011] Furthermore, the insulated box is hung above the support by a chain.

[0012] Furthermore, the thermal insulation box is formed by splicing and assembling a number of connecting plates; the connecting plates forming the thermal insulation box are double-layer connecting plates, and a thermal insulation layer is filled between the two layers of connecting plates.

[0013] Furthermore, the inlet of the thermal insulation bag is openably covered with a cover body.

[0014] Furthermore, a temperature measuring port connected to the inlet of the thermal insulation bag is provided on the surface of the support located outside the socket, and a temperature sensor is inserted in the temperature measuring port.

[0015] Furthermore, the temperature sensor is a thermocouple.

[0016] Furthermore, the inner wall of the thermal insulation bag is provided with a thermal insulation layer.

[0017] Furthermore, the heat storage ball is a ceramic heat storage ball.

[0018] The beneficial effects of the present invention are:

[0019] 1. Energy saving and emission reduction: The original insulation bag is directly discharged after preheating, and the heat energy in the exhaust gas is directly lost to the atmosphere and released, resulting in a waste of resources. The technology of the present invention adds a grid plate in the coil and fills the grid plate with heat storage balls. The high-temperature exhaust gas generated after the insulation bag is preheated passes through the heat storage balls in the insulation box. The high-temperature exhaust gas transfers part of the heat to the heat storage balls to form a heat preservation medium. When the heat storage balls absorb enough heat, they fully exchange heat with the combustion air in the coil through the coil wall, so that the combustion air can achieve the effect of preheating, thereby realizing the secondary utilization of the heat of the high-temperature exhaust gas generated after the insulation bag is preheated, reducing energy loss, and thus lowering the surrounding ambient temperature, reducing the heat demand for its own combustion before combustion, and reducing the demand for its own fuel by 5~10%. The heat energy utilization rate is as high as more than 20%, thereby reducing the surrounding ambient temperature by about 20%;

[0020] 2. Reduce costs and increase efficiency: The original insulation bag is directly discharged after preheating, and the heat energy in the exhaust gas is directly lost to the atmosphere, resulting in waste of resources and high energy consumption costs. The technology of the present invention uses the waste heat in the exhaust to preheat the combustion air, thereby reducing the demand for the fuel's own combustion heat during the heating process, reducing energy consumption costs. At the same time, because the combustion air is heated in advance, the combustion time is shortened, which improves the preheating efficiency of the insulation bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a schematic structural diagram of an energy-saving and consumption-reducing preheating bun baking device provided by an embodiment of the present invention.

[0022] The arrows in the figure indicate the direction of gas flow. DETAILED DESCRIPTION

[0023] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several variations and improvements may be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0024] Reference Figure 1The energy-saving and consumption-reducing preheating type baking bag device of the present invention comprises: a heat preservation bag 1, an inlet 11 is provided on the upper surface of the heat preservation bag 1, and a gas outlet 12 connected to the inner side of the heat preservation bag 1 is provided on one side wall of the heat preservation bag 1; a support 2, horizontally covered on the inlet 11 of the heat preservation bag 1, a socket 21 connected to the inlet 11 is provided in the middle of the surface of the support 2; a burner 3, the burner 3 is vertically inserted into the socket 21 of the support 2, and the The burner 3 has a built-in igniter (not shown), the air inlet end of the burner 3 is connected to a natural gas source (not shown), and the injection end 31 of the burner 3 faces the inlet 11 of the insulation bag 1; the insulation box 4 is mounted above the support 2, and the bottom surface of the insulation box 4 is provided with a plug interface 41 connected to the socket 21, and the side wall of the insulation box 4 is convexly provided with a sleeve 42, one end of the sleeve 42 is connected to the inner side of the insulation box 4, and the other end of the sleeve 42 extends to the insulation bag 1 and is sleeved on the air outlet nozzle 12, the upper surface of the heat preservation box 4 is provided with an air inlet 43 and an air outlet 44 at intervals, and an exhaust pipe 45 is inserted in the exhaust port 44; the coil 5 is in the shape of a pipe body that spirals from top to bottom, and the coil 5 is vertically arranged inside the heat preservation box 4, the upper end of the coil 5 is an air inlet pipe 51, and the lower end of the coil 5 is an air outlet pipe 52, and the air inlet pipe 51 of the coil 5 extends from the air inlet 43 to the heat preservation box 4. The outlet pipe 52 of the coil 5 is inserted into the plug port 41 and the socket 21 in sequence and inserted into the burner 3 above the upper surface of the box 4; the combustion-supporting fan 6 is arranged on the outside of the insulation box 4, and the air outlet end of the combustion-supporting fan 6 is connected to the air inlet pipe 51 of the coil 5 extending above the upper surface of the insulation box 4; a grid plate (not shown) is mounted on the inner side of the coil 5 between the air inlet pipe 51 and the air outlet pipe 52, and a plurality of heat storage balls (not shown) are arranged in the grid plate.

[0025] Furthermore, the sleeve 42 and the insulation box 4 are an integrated structure, and the sleeve 42 is bent at one end away from the insulation box toward the air outlet 12 of the insulation bag 1 to form a bending portion 421, and the sleeve 42 is sleeved on the air outlet 12 of the insulation bag 1 through the bending portion 421.

[0026] Furthermore, the heat preservation box 4 is hung above the support 2 by a chain (not shown).

[0027] Furthermore, the thermal insulation box 4 is formed by splicing and assembling a plurality of connecting plates 46 ; the connecting plates 46 forming the thermal insulation box 4 are double-layer connecting plates, and a thermal insulation layer 47 is filled between the two layers of connecting plates 46 .

[0028] Furthermore, the inlet of the heat-insulating bag 1 is openably covered with a cover body 13 .

[0029] Furthermore, a temperature measuring port 22 communicating with the inlet 11 of the heat preservation bag 1 is formed on the surface of the support 2 located outside the socket 21 , and a temperature sensor 23 is inserted into the temperature measuring port 22 .

[0030] Furthermore, the temperature sensor 23 is a thermocouple.

[0031] Furthermore, a thermal insulation layer 14 is provided on the inner wall of the thermal insulation bag 1 .

[0032] Furthermore, the heat storage ball is a ceramic heat storage ball.

[0033] The heat preservation box 4 is formed by splicing the connecting plates 46, and the connecting plates 46 are filled with the heat preservation layer 47. The lower end surface of the heat preservation box 4 can be fixed on the support 2. The support 2 covers the inlet 11 during the preheating process of the heat preservation bag 1, which can not only support the heat preservation box 4, but also play the role of sealing the heat preservation bag 1.

[0034] The support 2 is provided with a temperature sensor 23, which can accurately sense and feedback the temperature in the insulation bag 1;

[0035] The mixed combustion gas is ignited at the burner 3 to provide heat for preheating the insulation bag 1.

[0036] The energy-saving and consumption-reducing preheating bun baking device of the present invention is used as follows:

[0037] 1. Start the insulation bag 1 to bake and preheat. The combustion-supporting fan 6 will blow the combustion-supporting air into the coil 5. The combustion-supporting air flows along the coil 5 and forms a mixed combustion gas with the natural gas provided by the natural gas source at the burner 3 according to the combustible ratio;

[0038] 2. The mixed gas is ignited in the burner 3 to preheat the baking insulation bag 1;

[0039] 3. The high-temperature exhaust gas formed by the combustion mixed gas is discharged from the gas outlet 12 of the insulation bag 1, and the high-temperature exhaust gas enters the insulation box 4 through the sleeve 42;

[0040] 4. The high-temperature exhaust gas passes through the heat storage ball inside the heat preservation box 4 and the coil 5, transferring part of the heat to the heat storage ball to form a heat preservation medium;

[0041] 5. When the heat storage ball absorbs enough heat, it will fully exchange heat with the combustion air in the coil 5 through the wall of the coil 5, so that the combustion air can be preheated, thereby realizing the secondary utilization of the heat of the high-temperature exhaust gas;

[0042] 6. The preheated combustion air absorbs a large amount of heat from the high-temperature exhaust gas before combustion, which reduces the heat demand for its own combustion before combustion, and reduces the heat demand for its own combustion by 5~10% (reducing the demand for natural gas by 5~10%), thus reducing costs;

[0043] 7. The combustion air is preheated in advance by the high-temperature exhaust gas, which shortens the combustion time by 10~15% and improves the preheating efficiency of the insulation bag;

[0044] 8. The technology of the present invention recycles the heat energy of the high-temperature exhaust gas, with a heat energy utilization rate of more than 20%, reducing the direct loss of secondary energy to the surrounding environment, and reducing the surrounding ambient temperature by about 20%.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the invention may be modified or replaced by equivalents without departing from the scope of the technical solutions of the present invention, which should all be covered by the scope of the claims of the present invention.

Claims

1. An energy-saving and consumption-reducing preheating bun baking device, characterized in that: include: A heat preservation bag, wherein an inlet is provided on the upper surface of the heat preservation bag, and an air outlet connected to the inner side of the heat preservation bag is provided on one side wall of the heat preservation bag; A support, horizontally covering the inlet of the heat preservation bag, and a socket connected to the inlet is opened in the middle of the surface of the support; A burner, the burner is vertically inserted into the socket of the support, the burner has an internal igniter, the air inlet end of the burner is connected to a natural gas source, and the injection end of the burner faces the inlet of the insulation bag; The heat preservation box is mounted above the support, the bottom surface of the heat preservation box is provided with a plug interface connected to the socket, the side wall of the heat preservation box is provided with a sleeve, one end of the sleeve is connected to the inner side of the heat preservation box, the other end of the sleeve extends to the air outlet of the heat preservation bag and is sleeved on the air outlet, the upper surface of the heat preservation box is provided with an air inlet and an air outlet at intervals, and an exhaust pipe is inserted in the exhaust port; The coil is in the shape of a tube body that spirals from top to bottom, and the coil is vertically arranged inside the heat preservation box. The upper end of the coil is an air inlet pipe, and the lower end of the coil is an air outlet pipe. The air inlet pipe of the coil extends from the air inlet to above the upper surface of the heat preservation box, and the air outlet pipe of the coil is inserted into the plug interface and the socket in sequence and inserted into the burner. A combustion-supporting fan is arranged outside the heat preservation box, and an air outlet end of the combustion-supporting fan is connected to an air inlet pipe of a coil extending above the upper surface of the heat preservation box; A grid plate is mounted on the inner side of the coil between the air inlet pipe and the air outlet pipe, and a plurality of heat storage balls are arranged in the grid plate; the sleeve and the heat preservation box are an integrated structure, and the sleeve is bent toward the air outlet nozzle of the heat preservation bag at one end away from the heat preservation box to form a bending portion, and the sleeve is sleeved on the air outlet nozzle of the heat preservation bag through the bending portion; the heat preservation box is suspended above the support by a chain; the heat preservation box is formed by splicing and assembling a plurality of connecting plates; The connecting plate forming the thermal insulation box is a double-layer connecting plate, and an insulation layer is filled between the two connecting plates; the inlet of the thermal insulation bag is openably covered with a cover body; the surface of the support located outside the socket is provided with a temperature measuring port connected to the inlet of the thermal insulation bag, and a temperature sensor is inserted in the temperature measuring port.

2. The energy-saving and consumption-reducing preheating bun baking device according to claim 1, characterized in that: The temperature sensor is a thermocouple.

3. The energy-saving and consumption-reducing preheating bun baking device according to claim 1 or 2, characterized in that: The inner wall of the thermal insulation bag is provided with a thermal insulation layer.

4. The energy-saving and consumption-reducing preheating bun baking device according to claim 1, characterized in that: The heat storage ball is a ceramic heat storage ball.

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