Regenerated precoated sand roasting equipment

Abstract

The utility model provides regeneration precoated sand roasting equipment, and belongs to the technical field of precoated sand roasting. The box body is arranged on the support, a barrel body, a feeding barrel and a discharging barrel are arranged in the box body, the barrel body is communicated with the feeding barrel and the discharging barrel, the feeding barrel is arranged at one end of the barrel body, the discharging barrel is arranged at the other end of the barrel body, the feeding barrel extends out of one end of the box body, and the discharging barrel extends out of the other end of the box body; the box body plays a role in protecting the barrel body, the feeding barrel and the discharging barrel, the box body comprises the first box body and the second box body which are stacked up and down, and the barrel body is arranged between the first box body and the second box body, so that the barrel body is convenient to check and maintain and is more convenient to disassemble; wherein the first box body and the second box body are used for preserving heat of the precoated sand in the barrel body, energy is saved, the barrel body can rotate in the heating process, and the precoated sand in the barrel body is heated more uniformly.

Description

Technical Field

[0001] This utility model relates to the field of coated sand roasting technology, specifically to a regenerated coated sand roasting equipment. Background Technology

[0002] The main use of coated sand is in the casting of steel and iron parts. The foundry industry uses a large amount of coated sand. After use, because release agents or solid resin films are carried into the molding sand or core sand, the coated sand cannot be used directly, resulting in a significant waste of resources. To enable the reuse of coated sand, there are two preparation processes: cold method and hot method. The cold method uses ethanol to dissolve the resin and adds hexamethylenetetramine during the sand mixing process, so that the two are coated on the surface of the sand particles. The ethanol evaporates, resulting in reusable coated sand. The hot method involves roasting the sand to a certain temperature to accelerate the melting or volatilization of the resin and other chemical components, followed by cooling, crushing, and screening to obtain coated sand. Because cold methods require the addition of ethanol or other chemical reagents, the processing speed of coated sand is slow, and it also pollutes the environment. Therefore, thermal methods are usually used to process coated sand. For example, Chinese Patent CN 112091163 A, entitled "Regenerative Coated Sand Roasting Furnace," describes a furnace with a combustion chamber inside. An igniter facing the combustion chamber is installed on the furnace body. The furnace includes a feed chamber fixed to one side of the furnace body, with one side of the combustion chamber connected to the feed chamber. A preheating chamber is connected to the side of the combustion chamber away from the feed chamber, and the preheating chamber is connected to an exhaust gas pipe. A baffle is provided in the feed chamber, and a preheating cavity connected to the exhaust gas pipe is opened in the side wall of the feed chamber. The preheating cavity is also connected to the exhaust gas pipe. This invention has a simple structure. Exhaust gas from the combustion chamber is sent into the feed chamber to preheat the sand particles. Sand particles with a certain temperature entering the combustion chamber reduce heat consumption in the combustion chamber, thereby reducing the use of natural gas and lowering the roasting cost of the sand particles.

[0003] As the sand particles enter the combustion chamber, the staggered and inclined feed plates in the feed chamber allow them to flow downwards under their own force, slowing their flow rate and allowing them to enter the combustion chamber at a relatively slow speed. Once inside the combustion chamber, the sand particles undergo roasting. At this stage, a baffle seals the connection between the combustion chamber and the feed chamber, reducing heat loss within the combustion chamber. After roasting, the sand particles slide down the bottom of the combustion chamber into the preheating coil under their own gravity. The sand particles entering the combustion chamber cannot be agitated, resulting in uneven heating and energy loss.

[0004] The baking oven requires a significant amount of heat to heat the sand, leading to increased costs associated with sand baking.

[0005] Therefore, there is an urgent need for a coating sand roasting equipment that requires less heat, has a good heating effect, and is easy to maintain and install. Utility Model Content

[0006] In view of this, this utility model proposes a method of using a cylinder, a feed cylinder, and a discharge cylinder to perform secondary heating and repeated uniform contact heating of high-temperature coated sand, which saves more energy.

[0007] The technical solution of this utility model is implemented as follows: it includes a support and a box, the box is set on the support, and a cylinder, a feeding cylinder and a discharging cylinder are arranged inside the box. The cylinder is connected to the feeding cylinder and the discharging cylinder. The feeding cylinder is set at one end of the cylinder and the discharging cylinder is set at the other end of the cylinder. The feeding cylinder extends from one end of the box and the discharging cylinder extends from the other end of the box.

[0008] Based on the above technical solutions, preferably, the system also includes a first bracket, a second bracket, and a third bracket, all of which are fixedly mounted on a support. The feed cylinder is mounted on the first bracket, and the discharge cylinder is mounted on the second and third brackets.

[0009] Based on the above technical solutions, preferably, the feed cylinder is provided with a first transmission roller, and the first bracket is provided with at least two first lifting rollers, which are configured in cooperation with the first transmission roller.

[0010] Based on the above technical solutions, preferably, the discharge cylinder is provided with a second transmission roller, and the second bracket is provided with at least two second lifting rollers, which are configured in cooperation with the second transmission roller.

[0011] Based on the above technical solutions, preferably, the third bracket is provided with at least two lifting wheels, and the two lifting wheels are configured in conjunction with the feed cylinder.

[0012] Based on the above technical solutions, preferably, the system also includes a motor, a reducer, and a transmission belt. The motor is connected to the reducer, and the transmission belt is positioned between the reducer and the discharge cylinder. The motor and the reducer are mounted on a support.

[0013] Based on the above technical solutions, preferably, it also includes a connecting cylinder, which is disposed between the feed cylinder and the cylinder, and both the cylinder and the feed cylinder are connected to the connecting cylinder.

[0014] Based on the above technical solutions, preferably, the inner diameter of the cylinder is larger than the inner diameter of the feed cylinder, one end of the connecting cylinder is connected to the cylinder, and the inner wall of the other end of the connecting cylinder is smoothly connected to the feed cylinder.

[0015] Based on the above technical solutions, preferably, a discharge baffle is provided at the end of the cylinder away from the feed cylinder, and the discharge cylinder is connected to the discharge baffle.

[0016] Based on the above technical solutions, preferably, an inner discharge cylinder is sleeved inside the discharge cylinder, and the axes of the inner discharge cylinder and the discharge cylinder are arranged to coincide with each other.

[0017] Based on the above technical solutions, preferably, the discharge baffle is provided with a discharge port, and the discharge inner cylinder is connected to the discharge port.

[0018] Based on the above technical solutions, preferably, the end of the inner discharge cylinder that is away from the cylinder body extends out of the discharge cylinder.

[0019] Based on the above technical solutions, preferably, a sealing ring is provided at the end of the discharge cylinder away from the cylinder body, and the sealing ring is arranged around the inner discharge cylinder.

[0020] Based on the above technical solutions, preferably, the axes of the cylinder, the feed cylinder, the discharge cylinder, and the connecting cylinder coincide with each other.

[0021] Based on the above technical solutions, preferably, the feeding cylinder is provided with a feeding conveyor bar, the cylinder body is provided with a pushing bar, and the discharge inner cylinder is provided with a discharge bar.

[0022] This utility model provides a regenerated coated sand roasting equipment that has the following advantages over existing technologies:

[0023] The housing protects the cylinder, feed cylinder, and discharge cylinder. The housing consists of a first housing and a second housing stacked on top of each other. The cylinder is positioned between the first housing and the second housing for easy inspection and maintenance, and easier disassembly. The first housing and the second housing insulate the coated sand inside the cylinder, saving energy. The cylinder can rotate during the heating process, resulting in more uniform heating of the coated sand inside.

[0024] The coated sand heated by the ignition nozzle enters the cylinder through the feed cylinder. During the rotation of the cylinder, the high-temperature coated sand is heated more evenly. After entering the cylinder, the coated sand can still be heated by the residual heat, making fuller use of the residual heat on the coated sand and reducing the energy required for heating. As the cylinder rotates, the gradually cooling coated sand is pushed by the coated sand entering through the feed cylinder and discharged from the discharge cylinder at the other end of the cylinder.

[0025] High-temperature coated sand enters the feed cylinder. To prevent the high-temperature coated sand from leaving the device, a conical connecting cylinder is used to restrict the coated sand inside the cylinder, thus preventing the coated sand from leaking out of the cylinder.

[0026] The end of the cylinder furthest from the feed cylinder is a baffle plate, which ensures that the coated sand is fully mixed and stirred inside the cylinder. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a perspective view of a recycled coated sand roasting device according to the present invention;

[0029] Figure 2 This is a perspective view of a partial structure of a recycled coated sand roasting equipment according to the present invention;

[0030] Figure 3 This utility model Figure 2 The main view;

[0031] Figure 4 This utility model Figure 2 A sectional view;

[0032] Figure 5 This utility model Figure 2 A sectional view. Detailed Implementation

[0033] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0034] like Figure 1-4As shown, a recycled coated sand roasting device includes a support 5 and a housing 6. The housing 6 is mounted on the support 5 and contains a cylinder 1, a feed cylinder 2, and a discharge cylinder 3. The cylinder 1 is connected to the feed cylinder 2 and the discharge cylinder 3. The feed cylinder 2 is located at one end of the cylinder 1, and the discharge cylinder 3 is located at the other end of the cylinder 1. The feed cylinder 2 extends from one end of the housing 6, and the discharge cylinder 3 extends from the other end of the housing 6. The housing 6 protects the cylinder 1, the feed cylinder 2, and the discharge cylinder 3. The housing 6 includes a first housing 61 and a second housing 62 stacked vertically. The cylinder 1 is positioned between the first housing 61 and the second housing 62, facilitating inspection and maintenance of the cylinder 1 and making disassembly more convenient. The first housing 61 and the second housing 62 insulate the coated sand inside the cylinder 1, saving energy. During the heating process, the cylinder 1 can rotate, resulting in more uniform heating of the coated sand inside. The coated sand heated by the ignition nozzle enters the cylinder 1 through the feed cylinder 2. During the rotation of the cylinder 1, the high-temperature coated sand is heated more evenly. After entering the cylinder 1, the coated sand can still be heated by the residual heat, making fuller use of the residual heat on the coated sand and reducing the energy required for heating. As the cylinder 1 rotates, the gradually cooling coated sand is pushed by the coated sand entering through the feed cylinder 2 and discharged from the discharge cylinder 3 at the other end of the cylinder 1.

[0035] It also includes a first bracket 51, a second bracket 52, and a third bracket 53, all of which are fixedly mounted on the support 5. The feed cylinder 2 is mounted on the first bracket 51, and the discharge cylinder 3 is mounted on the second bracket 52 and the third bracket 53. The first bracket 51, the second bracket 52, and the third bracket 53 support and fix the cylinder 1, the feed cylinder 2, and the discharge cylinder 3 on the support 5.

[0036] The feed cylinder 2 is equipped with a first drive roller 512, and the first bracket 51 is equipped with at least two first lifting rollers 511, which are configured to cooperate with the first drive roller 512. The discharge cylinder 3 is equipped with a second drive roller 522, and the second bracket 52 is equipped with at least two second lifting rollers 521, which are configured to cooperate with the second drive roller 522. The third bracket 53 is equipped with at least two lifting wheels 531, which are configured to cooperate with the feed cylinder 2. At this time, the cylinder 1, the feed cylinder 2, and the discharge cylinder 3 can rotate on the support 5, and the internal coated sand can be tumbled, conveyed, and discharged through rotation.

[0037] It also includes a motor 71, a reducer 72 and a transmission belt 73. The motor 71 is connected to the reducer 72, and the transmission belt 73 is disposed between the reducer 72 and the discharge cylinder 3. The motor 71 and the reducer 72 are mounted on the bracket 5.

[0038] The system also includes a connecting cylinder 4, which is positioned between the feed cylinder 2 and the cylinder 1, with both cylinder 1 and feed cylinder 2 connected to it. The inner diameter of cylinder 1 is larger than that of feed cylinder 2. One end of the connecting cylinder 4 is connected to cylinder 1, and the other end of the connecting cylinder 4 smoothly transitions to the feed cylinder 2. Since high-temperature coated sand enters feed cylinder 2, to prevent the high-temperature coated sand from escaping from the device, the conical connecting cylinder 4 is used to confine the coated sand inside cylinder 1, preventing leakage.

[0039] A discharge baffle 11 is provided at the end of the cylinder 1 away from the feed cylinder 2, and the discharge cylinder 3 is connected to the discharge baffle 11. The baffle 11 at the end of the cylinder 1 away from the feed cylinder 2 ensures that the coated sand is fully mixed and stirred in the cylinder 1.

[0040] The discharge cylinder 3 is fitted with an inner discharge cylinder 31, and the axes of the inner discharge cylinder 3 and the discharge cylinder 3 are aligned. The inner discharge cylinder 31 is used for outputting coated sand. Since the coated sand output from the cylinder 1 still has a high temperature, the discharge cylinder 3 is used to protect the discharge cylinder 31 to prevent the hot coated sand from burning the operators. This also ensures that the heat remains inside the cylinder 1 to heat the coated sand, thus saving energy.

[0041] The discharge baffle 11 is provided with a discharge port 12, and the discharge inner cylinder 31 is connected to the discharge port 12. The discharge port 12 is used to discharge the coated sand inside the cylinder 1.

[0042] The discharge inner cylinder 31 extends out of the discharge cylinder 3 at the end furthest from the cylinder body 1. A sealing ring 32 is provided at the end of the discharge cylinder 3 furthest from the cylinder body 1, and the sealing ring 32 surrounds the discharge inner cylinder 31. The sealing ring 32 and the discharge cylinder 32 provide more complete protection for the discharge inner cylinder 31. The axes of the cylinder body 1, the feed cylinder 2, the discharge cylinder 3, and the connecting cylinder 4 coincide with each other.

[0043] Another implementation method, such as Figure 4 As shown, the feed cylinder 2 is equipped with a feed conveyor bar 21, the cylinder body 1 is equipped with a pusher bar 13, and the discharge inner cylinder 31 is equipped with a discharge bar 33. When the inner cylinder of the recycled coated sand roasting rotates, the feed conveyor bar 21, the pusher bar 13, and the discharge bar 33 transport the coated sand from the feed cylinder 2 to the discharge inner cylinder 31, preventing the coated sand from getting stuck in a certain structure, which would prevent the coated sand from being heated and output effectively.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A regenerated coated sand roasting equipment, characterized in that: Includes a support (5) and a box (6). The box (6) is mounted on the support (5). Inside the box (6) are a cylinder (1), a feed cylinder (2) and a discharge cylinder (3). The cylinder (1) is connected to the feed cylinder (2) and the discharge cylinder (3). The feed cylinder (2) is located at one end of the cylinder (1), and the discharge cylinder (3) is located at the other end of the cylinder (1). The feed cylinder (2) extends out from one end of the box (6), and the discharge cylinder (3) extends out from the other end of the box (6).

2. The recycled coated sand roasting equipment as described in claim 1, characterized in that: It also includes a first bracket (51), a second bracket (52) and a third bracket (53), the first bracket (51), the second bracket (52) and the third bracket (53) are all fixedly mounted on the bracket (5), the feed cylinder (2) is mounted on the first bracket (51), and the discharge cylinder (3) is mounted on the second bracket (52) and the third bracket (53).

3. The recycled coated sand roasting equipment as described in claim 2, characterized in that: The feed cylinder (2) is provided with a first drive roller (512), and the first bracket (51) is provided with at least two first lifting rollers (511), which are configured in cooperation with the first drive roller (512).

4. The recycled coated sand roasting equipment as described in claim 2, characterized in that: The discharge cylinder (3) is provided with a second drive roller (522), and the second bracket (52) is provided with at least two second lifting rollers (521), which are configured in cooperation with the second drive roller (522).

5. The recycled coated sand roasting equipment as described in claim 2, characterized in that: The third bracket (53) is provided with at least two lifting wheels (531), and the two lifting wheels (531) are configured in conjunction with the feed cylinder (2).

6. The recycled coated sand roasting equipment as described in claim 1, characterized in that: It also includes a motor (71), a reducer (72) and a transmission belt (73). The motor (71) is connected to the reducer (72), and the transmission belt (73) is installed between the reducer (72) and the discharge cylinder (3). The motor (71) and the reducer (72) are installed on the bracket (5).

7. The recycled coated sand roasting equipment as described in claim 1, characterized in that: It also includes a connecting cylinder (4), which is disposed between the feed cylinder (2) and the cylinder (1), and both the cylinder (1) and the feed cylinder (2) are connected to the connecting cylinder (4).

8. The recycled coated sand roasting equipment as described in claim 7, characterized in that: The inner diameter of the cylinder (1) is larger than the inner diameter of the feed cylinder (2). One end of the connecting cylinder (4) is connected to the cylinder (1), and the inner wall of the other end of the connecting cylinder (4) is smoothly connected to the feed cylinder (2).

9. The recycled coated sand roasting equipment as described in claim 1, characterized in that: The end of the cylinder (1) away from the feed cylinder (2) is provided with a discharge baffle (11), and the discharge cylinder (3) is connected to the discharge baffle (11).

10. The recycled coated sand roasting equipment as described in claim 1, characterized in that: The discharge cylinder (3) is fitted with a discharge inner cylinder (31), and the axes of the discharge inner cylinder (31) and the discharge cylinder (3) are arranged to coincide with each other.

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