An interchangeable hot sintering furnace structure

Abstract

This utility model discloses an interchangeable heat sintering furnace structure. A first valve is connected to a gas-to-gas heat exchanger via a pipe. The gas-to-gas heat exchanger is connected to a first blower via a pipe. The first blower is connected to a second valve via a pipe. The second valve is connected to the air inlet of the first sintering furnace via a pipe. The air outlet of the second sintering furnace is connected to a third valve via a pipe. The third valve is connected to the gas-to-gas heat exchanger via a pipe. The gas-to-gas heat exchanger is connected to a second blower via a pipe. The second blower is connected to a fourth valve via a pipe. This utility model, by setting a heat exchanger and heat exchange pipe between two sintering furnaces, and by having the two sintering furnaces alternately perform heat exchange sintering and store energy through water heat exchange, makes fuller use of sintering waste heat, saves energy, and, in conjunction with a sintering furnace heating device, greatly improves the initial heating rate of the sintering furnace, reduces the consumption of electric and gas energy, and has good practicality.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology, specifically to an interchangeable heat sintering furnace structure. Background Technology

[0002] A sintering furnace is a specialized piece of equipment that enables powder compacts to obtain the required physical and mechanical properties and microstructure through sintering.

[0003] In existing systems, after sintering is completed, the waste heat inside the sintering furnace is recovered through a flue-type waste heat recovery device. When heating the sintering furnace, resistance heating wires or gas burners are generally installed in the furnace body to transfer heat into the furnace through heat conduction.

[0004] The inventors discovered the following defects in actual production applications:

[0005] Flue-type waste heat recovery is inefficient, with a large amount of high-temperature waste heat being released into the environment without being fully utilized, resulting in a huge waste of energy. Using electric heating or gas heating methods consumes a lot of electricity and gas, and the initial heating rate is slow. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an interchangeable hot sintering furnace structure to address the shortcomings of the prior art and solve at least one of the above-mentioned technical problems.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An interchangeable heat sintering furnace structure includes a first sintering furnace, a second sintering furnace, a gas-to-gas heat exchanger, and a controller. The furnace chambers of the first sintering furnace and the second sintering furnace are each provided with an outlet pipe and an inlet pipe. The outlet pipe of the first sintering furnace is connected to a first valve through a pipe. The first valve is connected to the gas-to-gas heat exchanger through a pipe. The gas-to-gas heat exchanger is connected to a first blower through a pipe. The first blower is connected to a second valve through a pipe. The second valve is connected to the inlet of the first sintering furnace through a pipe. The outlet of the second sintering furnace is connected to a third valve through a pipe. The third valve is connected to the gas-to-gas heat exchanger through a pipe. The gas-to-gas heat exchanger is connected to a second blower through a pipe. The second blower is connected to a fourth valve through a pipe. The fourth valve is connected to the inlet of the second sintering furnace through a pipe. The controller is electrically connected to both the first blower and the second blower.

[0008] Furthermore, the first valve, the second valve, the third valve, and the fourth valve are all solenoid valves, and all of them are electrically connected to the controller.

[0009] Furthermore, the system includes a gas-liquid heat exchanger, a cold water tank, and an insulated water tank. The gas outlet pipe of the first sintering furnace is connected to a fifth valve via a pipe. The second valve is connected to the gas-liquid heat exchanger via a pipe. The gas-liquid heat exchanger is connected to a first blower via a pipe. The gas outlet pipe of the second sintering furnace is connected to a sixth valve via a pipe. The sixth valve is connected to the gas-liquid heat exchanger via a pipe. The gas-liquid heat exchanger is connected to a second blower via a pipe. The cold water tank is connected to a seventh valve via a pipe. The seventh valve is connected to a water pump via a pipe. The water pump is connected to the gas-liquid heat exchanger via a pipe. The gas-liquid heat exchanger is connected to an eighth valve via a pipe. The eighth valve is connected to the insulated water tank via a pipe. The water pump is connected to a controller.

[0010] Furthermore, the fifth, sixth, seventh, and eighth valves are all solenoid valves, and all of them are connected to the controller.

[0011] Furthermore, both the first and second sintering furnaces are equipped with an exhaust pipe and an inlet pipe, and both the exhaust pipe and the inlet pipe are equipped with a temperature sensor, which is electrically connected to the controller.

[0012] The beneficial effects of this utility model are:

[0013] This invention utilizes heat exchangers and heat exchange pipes between two sintering furnaces, allowing the two furnaces to alternately exchange heat for sintering and store energy through water heat exchange. This makes fuller use of sintering waste heat, saves energy, and, in conjunction with a sintering furnace heating device, greatly increases the initial heating rate of the sintering furnace, reducing the consumption of electricity and gas energy. It has good practicality. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] The attached diagram lists the components represented by each number as follows:

[0017] First sintering furnace 1; Second sintering furnace 2; Gas-gas heat exchanger 3; Gas-liquid heat exchanger 4; First valve 5; First blower 6; Second valve 7; Third valve 8; Second blower 9; Fourth valve 10; Fifth valve 11; Sixth valve 12; Temperature sensor 13; Cold water tank 14; Seventh valve 15; Water pump 16; Eighth valve 17; Insulated water tank 18. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1: See Figure 1 This is a schematic diagram of the structure of this utility model, including a first sintering furnace 1, a second sintering furnace 2, a gas-to-gas heat exchanger 3, and a controller. Both the first sintering furnace 1 and the second sintering furnace 2 have an outlet pipe and an inlet pipe, respectively located on both sides of the sintering furnace to facilitate sufficient heat exchange. The outlet pipe of the first sintering furnace 1 is connected to a first valve 5 via a pipe. The first valve 5 is connected to the gas-to-gas heat exchanger 3 via a pipe. The gas-to-gas heat exchanger 3 is connected to a first blower 6 via a pipe. The outlet of the first blower 6 is connected to a second valve 7 via a pipe. The second valve 7 is connected to the inlet of the first sintering furnace 1 via a pipe. The outlet of the second sintering furnace 2 is connected to... The third valve 8 is connected to the gas-gas heat exchanger 3 via a pipe. The gas-gas heat exchanger 3 is connected to the second blower 9 via a pipe. The outlet of the second blower 9 is connected to the fourth valve 10 via a pipe. The gas-gas heat exchanger 3 is equipped with two heat exchange channels. The two ends of one heat exchange channel are connected to the inlet of the first valve 5 and the first blower 6, respectively. The two ends of the other heat exchange channel are connected to the inlet of the third valve 8 and the second blower 9, respectively. The fourth valve 10 is connected to the inlet of the second sintering furnace 2 via a pipe. The controllers are electrically connected to the first blower 6 and the second blower 9, and the controllers control the switching on and off of the first blower 6 and the second blower 9.

[0025] Specifically, the first valve 5, the second valve 7, the third valve 8, and the fourth valve 10 are all solenoid valves. The first valve 5, the second valve 7, the third valve 8, and the fourth valve 10 are all electrically connected to the controller, and the controller controls the opening and closing of the first valve 5, the second valve 7, the third valve 8, and the fourth valve 10.

[0026] Specifically, the system includes a gas-liquid heat exchanger 4, a cold water tank 14, and an insulated water tank 18. The outlet pipe of the first sintering furnace 1 is connected to a fifth valve 11 via a pipe. The second valve 7 is connected to the gas-liquid heat exchanger 4 via a pipe. The gas-liquid heat exchanger 4 is connected to the inlet of the first blower 6 via a pipe. The outlet pipe of the second sintering furnace 2 is connected to a sixth valve 12 via a pipe. The sixth valve 12 is connected to the gas-liquid heat exchanger 4 via a pipe. The gas-liquid heat exchanger 4 is connected to the inlet of the second blower 9 via a pipe. The cold water tank 14 is connected to a seventh valve 15 via a pipe. A water pump 16 is connected via a pipe, and the water pump 16 is connected to a gas-liquid heat exchanger 4 via a pipe. The gas-liquid heat exchanger 4 is connected to an eighth valve 17 via a pipe. The gas-liquid heat exchanger 4 is equipped with two heat exchange channels. One end of one heat exchange channel is connected to the fifth valve 11 and the sixth valve, and the other end is connected to the air inlet of the first blower 6 and the second blower 9. The two ends of the other heat exchange channel are connected to the water pump 16 and the eighth valve 17 respectively. The eighth valve 17 is connected to an insulated water tank 18 via a pipe. The water pump 16 is connected to a controller, which controls the start and stop of the water pump 16.

[0027] Specifically, valves 11, 12, 15, and 17 are all solenoid valves. They are all connected to a controller, which controls their opening and closing.

[0028] Specifically, both the first sintering furnace 1 and the second sintering furnace 2 are equipped with an exhaust pipe and an intake pipe, and both the exhaust pipe and the intake pipe are equipped with a temperature sensor 13. The temperature sensor 13 is electrically connected to the controller. The sensor transmits the temperature signal to the controller, and the controller receives the temperature signal and sends instructions to each electrical component.

[0029] Specifically, the controller is for controlling the computer.

[0030] The working principle of this utility model:

[0031] The first sintering furnace 1 and the second sintering furnace 2 are used alternately. When the first sintering furnace 1 needs to cool down and the second sintering furnace 2 needs to heat up, the second sintering furnace 2 is equipped with an electric heating device. The electric heating device heats the second sintering furnace 2. The controller controls the opening of the first valve 5, the second valve 7, the third valve 8, and the fourth valve 10, and the closing of the fifth valve 11, the sixth valve 12, the seventh valve 15, and the eighth valve 17. The first blower 6 and the second blower 9 are started. The hot air from the first sintering furnace 1 and the cold air from the second sintering furnace 2 enter the gas-to-gas heat exchanger 3 for heat exchange. After the hot air from the first sintering furnace 1 cools down by exchanging heat with the cold air from the second sintering furnace 2, it returns to the first sintering furnace 1. After the cold air from the second sintering furnace 2 heats up by exchanging heat with the hot air from the first sintering furnace 1, it returns to the second sintering furnace 2. When the temperature sensor 13 detects that the temperature difference between the outlet pipe in the first sintering furnace 1 and the outlet pipe in the second sintering furnace 2 is less than 10 degrees, the controller... The fifth valve 11, the seventh valve 15, the water pump 16, and the eighth valve 17 are opened. The controller controls the first valve 5, the third valve 8, the fourth valve 10, and the second blower 9 to close. The first blower 6 and the second valve 7 remain open, and the sixth valve 12 remains closed. At the same time, the electric heating device continues to heat the second sintering furnace 2 until it reaches the target temperature. The hot air in the first sintering furnace 1 and the cold water in the cold water tank 14 enter the gas-liquid heat exchanger 4 for heat exchange. The cooled hot air returns to the first sintering furnace 1 after heat exchange, and the hot water enters the heat preservation tank 18 for energy storage. When the temperature sensor 13 detects that the temperature of the gas outlet pipe of the first sintering furnace 1 is less than 80 degrees Celsius, the controller controls the fifth valve 11, the seventh valve 15, the water pump 16, the eighth valve 17, the first blower 6, and the second valve 7 to close. At this time, the operator can wait for the first sintering furnace 1 to cool down naturally before opening the first sintering furnace 1 to take out the product.

[0032] When the second sintering furnace 2 needs to be cooled down and the first sintering furnace 1 needs to be heated up, the first sintering furnace 1 is equipped with an electric heating device. The electric heating device heats the first sintering furnace 1. The controller controls the opening of the first valve 5, the second valve 7, the third valve 8, and the fourth valve 10, and the closing of the fifth valve 11, the sixth valve 12, the seventh valve 15, and the eighth valve 17. The first blower 6 and the second blower 9 are started. The cold air from the first sintering furnace 1 and the hot air from the second sintering furnace 2 enter the gas-to-gas heat exchanger 3 for heat exchange. After the cold air in the first sintering furnace 1 heats up by exchanging heat with the hot air in the second sintering furnace 2, it returns to the first sintering furnace 1. After the hot air in the second sintering furnace 2 cools down by exchanging heat with the cold air in the first sintering furnace 1, it returns to the second sintering furnace 2. When the temperature sensor 13 detects that the temperature difference between the outlet pipe in the second sintering furnace 2 and the outlet pipe in the first sintering furnace 1 is less than 10 degrees, it controls the sixth valve 12 and the seventh valve 17 to open. Door 15, water pump 16, and eighth valve 17 are opened. The controller controls the first valve 5, second valve 7, third valve 8, and first blower 6 to close. The second blower 9 and fourth valve 10 remain open, and the fifth valve 11 remains closed. At the same time, the electric heating device continues to heat the first sintering furnace 1 until it reaches the target temperature. The hot air in the second sintering furnace 2 and the cold water in the cold water tank 14 enter the gas-liquid heat exchanger 4 for heat exchange. The cooled hot air returns to the second sintering furnace 2 after heat exchange, and the hot water enters the heat preservation tank 18 for energy storage. When the temperature sensor 13 detects that the temperature of the gas outlet pipe of the second sintering furnace 2 is less than 80 degrees Celsius, the controller controls the sixth valve 12, seventh valve 15, water pump 16, eighth valve 17, second blower 9, and fourth valve 10 to close. At this time, the operator can wait for the second sintering furnace 2 to cool down naturally before opening the second sintering furnace 2 to take out the product.

[0033] This invention utilizes heat exchangers and heat exchange pipes between two sintering furnaces, allowing the two furnaces to alternately exchange heat for sintering and store energy through water heat exchange. This makes fuller use of sintering waste heat, saves energy, and, in conjunction with a sintering furnace heating device, greatly increases the initial heating rate of the sintering furnace, reducing the consumption of electricity and gas energy. It has good practicality.

[0034] The above are merely optional embodiments of this utility model and are not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0035] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

Claims

1. An interchangeable heat sintering furnace structure, characterized by: The system includes a first sintering furnace (1), a second sintering furnace (2), a gas-to-gas heat exchanger (3), and a controller. Both the first sintering furnace (1) and the second sintering furnace (2) have an outlet pipe and an inlet pipe in their furnace chambers. The outlet pipe of the first sintering furnace (1) is connected to a first valve (5) via a pipe. The first valve (5) is connected to the gas-to-gas heat exchanger (3) via a pipe. The gas-to-gas heat exchanger (3) is connected to a first blower (6) via a pipe. The first blower (6) is connected to a second valve (7) via a pipe. The second valve (7) allows for... The controller is connected to the air inlet of the first sintering furnace (1) via a pipe. The air outlet of the second sintering furnace (2) is connected to the third valve (8) via a pipe. The third valve (8) is connected to the gas-gas heat exchanger (3) via a pipe. The gas-gas heat exchanger (3) is connected to the second blower (9) via a pipe. The second blower (9) is connected to the fourth valve (10) via a pipe. The fourth valve (10) is connected to the air inlet of the second sintering furnace (2) via a pipe. The controller is electrically connected to the first blower (6) and the second blower (9).

2. The interchangeable heat sintering furnace structure according to claim 1, wherein: The first valve (5), the second valve (7), the third valve (8), and the fourth valve (10) are all solenoid valves, and the first valve (5), the second valve (7), the third valve (8), and the fourth valve (10) are all electrically connected to the controller.

3. The interchangeable hot sintering furnace structure according to claim 1, characterized in that: The system includes a gas-liquid heat exchanger (4), a cold water tank (14), and an insulated water tank (18). The gas outlet pipe of the first sintering furnace (1) is connected to a fifth valve (11) via a pipe. The second valve (7) is connected to the gas-liquid heat exchanger (4) via a pipe. The gas-liquid heat exchanger (4) is connected to a first blower (6) via a pipe. The gas outlet pipe of the second sintering furnace (2) is connected to a sixth valve (12) via a pipe. The sixth valve (12) is connected to the gas-liquid heat exchanger (4) via a pipe. The gas-liquid heat exchanger (4) is connected to the second blower (9) through a pipe. The cold water tank (14) is connected to the seventh valve (15) through a pipe. The seventh valve (15) is connected to the water pump (16) through a pipe. The water pump (16) is connected to the gas-liquid heat exchanger (4) through a pipe. The gas-liquid heat exchanger (4) is connected to the eighth valve (17) through a pipe. The eighth valve (17) is connected to the insulated water tank (18) through a pipe. The water pump (16) is connected to the controller.

4. The interchangeable heat sintering furnace structure according to claim 3, wherein: The fifth valve (11), the sixth valve (12), the seventh valve (15), and the eighth valve (17) are all solenoid valves, and the fifth valve (11), the sixth valve (12), the seventh valve (15), and the eighth valve (17) are all connected to the controller.

5. The interchangeable heat sintering furnace structure according to any one of claims 1-4, characterized in that: The furnace chambers of the first sintering furnace (1) and the second sintering furnace (2) are equipped with an exhaust pipe and an inlet pipe, and both the exhaust pipe and the inlet pipe are equipped with a temperature sensor (13). The temperature sensor (13) is electrically connected to the controller.

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