Air inlet device of heat treatment furnace with dustproof filtering device

Abstract

This utility model belongs to the technical field of filtration devices for heat treatment furnaces, and discloses a heat treatment furnace air inlet device with a dustproof filtration device. It includes a furnace body, a first filter pipe on the top of the furnace body, the first filter pipe including a pipe, multiple first fixing blocks fixedly installed on the outer side of the top of the pipe, a second fixing block fitted to the top surface of the first fixing block, a sliding sleeve slidably installed on the outer side of the second fixing block, a fixing screw penetrating through the sliding sleeve, and the threaded end of the fixing screw threadedly connected to the first fixing block. A gas delivery pipe is fixedly installed on the inner side of the second fixing block. This solution solves the problem of the heat treatment furnace filtration device being difficult to disassemble, thereby improving disassembly speed and reducing the hassle of disassembly. Furthermore, due to its simple structure, disassembly will not damage the filtration device, improving safety.

Description

Technical Field

[0001] This utility model belongs to the technical field of filtration devices for heat treatment furnaces, specifically a heat treatment furnace air inlet device with a dustproof filter. Background Technology

[0002] A heat treatment furnace is an electric or fuel-fired furnace used for heating furnace charge for heat treatment. Commonly used heat treatment furnaces include box-type resistance furnaces, pit-type resistance furnaces, gas carburizing furnaces, and salt bath furnaces. Continuous furnaces are usually used, where workpieces are continuously loaded from the charging door, pass through the furnace chamber, and are continuously discharged from the discharging door.

[0003] When using a heat treatment furnace, specific gases, such as protective gases, reactive gases, or controlled atmospheres, need to be introduced into it. In order to ensure the quality and safety of workpiece processing, these gases need to be filtered to prevent particulate solids in the gas from affecting the processing quality. After long-term use, these filter devices need to be disassembled and cleaned to ensure the filtration accuracy. However, most filter devices are very troublesome to disassemble, which is not only time-consuming and laborious, but also easy to damage the filter devices. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides a heat treatment furnace air inlet device with a dust filter, which is easy to disassemble. This invention solves the problem of difficult disassembly of the heat treatment furnace filter, thereby increasing disassembly speed and reducing the hassle of disassembly. Furthermore, due to its simple structure, disassembly will not damage the filter, thus improving safety.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heat treatment furnace air inlet device with a dustproof filter, comprising a furnace body, a first filter pipe disposed on the top of the furnace body, the first filter pipe comprising a pipe,

[0006] Multiple first fixing blocks are fixedly installed on the top outer side of the pipe. A second fixing block is attached to the top surface of the first fixing block. A sliding sleeve is slidably installed on the outer side of the second fixing block. A fixing screw is installed through the inside of the sliding sleeve, and the threaded end of the fixing screw is threadedly connected to the first fixing block.

[0007] Preferably, an air supply pipe is fixedly installed on the inner side of the second fixing block, and a filter screen is attached to the bottom end of the air supply pipe, and the filter screen is fixedly connected to the first filter pipe.

[0008] Preferably, an extension edge is fixedly provided on the outer side of the bottom end of the first filter tube, a fixed edge is attached to the bottom of the extension edge, a second filter tube is fixedly provided inside the fixed edge, and a ceramic limiting block is fixedly provided inside the second filter tube.

[0009] Preferably, a circular groove is provided at the bottom of the extended edge, a sealing gasket is embedded inside the circular groove, and the sealing gasket is fixedly connected to the fixed edge, with the height of the sealing gasket being greater than the depth of the circular groove.

[0010] Preferably, a fixing sleeve is slidably provided on the bottom outer side of the second filter tube, a sealing ring is fixedly provided inside the fixing sleeve, and the sealing ring is in contact with the second filter tube. A fixing tube is attached to the bottom inner side of the sealing ring, and the fixing tube is fixedly provided on the top surface of the furnace body.

[0011] Preferably, a support base is fixedly installed on the top surface of the furnace body, and the support base is fixedly connected to the gas supply pipe, and a rotating door is rotatably installed on the front side of the support base.

[0012] Preferably, a base is fixedly installed on the bottom surface of the furnace body, and a furnace door is rotatably installed on the front side of the furnace body.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention solves the problem of difficult disassembly of the heat treatment furnace filter device by lifting the fixing sleeve upwards, loosening the connection between the second filter tube and the fixing tube, and then rotating the fixing screw outwards. The fixing screw will then loosen its connection with the first fixing block. Subsequently, the sliding sleeve is moved to the top of the second fixing block, at which point the first and second filter tubes can be removed. This solves the problem of difficult disassembly of the heat treatment furnace filter device, thereby improving the disassembly speed and reducing the trouble of disassembly. At the same time, due to the simple structure, the filter device will not be damaged during disassembly, thus improving safety. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the furnace body of this utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the fixing base of this utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the gas pipeline of this utility model;

[0019] Figure 5 This is a schematic diagram of the sealing gasket installation structure of this utility model.

[0020] In the diagram: 1. Furnace body;

[0021] 2. First filter tube; 201. Pipe; 202. First fixing block; 203. Filter screen; 204. Extension edge; 205. Circular groove;

[0022] 3. Gas supply pipe; 301. Second fixing block; 4. Sliding sleeve; 5. Fixing screw; 6. Second filter pipe; 601. Fixing edge; 602. Sealing gasket; 603. Ceramic limit block; 7. Fixing sleeve; 8. Sealing ring; 9. Support base; 10. Rotating door; 11. Furnace door; 12. Base; 13. Fixing pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1 to 5 As shown, this utility model provides a heat treatment furnace air inlet device with a dustproof filter, including a furnace body 1, and a first filter pipe 2 is provided on the top of the furnace body 1. The first filter pipe 2 includes a pipe 201.

[0025] Multiple first fixing blocks 202 are fixedly installed on the top outer side of the pipe 201. A second fixing block 301 is attached to the top surface of the first fixing block 202. A sliding sleeve 4 is slidably installed on the outer side of the second fixing block 301. A fixing screw 5 is installed through the inside of the sliding sleeve 4, and the threaded end of the fixing screw 5 is threadedly connected to the first fixing block 202. When the fixing screw 5 is rotated outward, the fixing screw 5 will be released from the first fixing block 202. Then, the sliding sleeve 4 is moved to the top of the second fixing block 301. At this time, the first filter pipe 2 can be removed from the top of the furnace body 1. This solves the problem of the heat treatment furnace filter device being difficult to disassemble, thereby improving the disassembly speed and reducing the trouble of disassembly. At the same time, due to the simple structure, the filter device will not be damaged during disassembly, thus improving safety.

[0026] Specifically, an air supply pipe 3 is fixedly installed on the inner side of the second fixed block 301, and a filter screen 203 is attached to the bottom end of the air supply pipe 3. The filter screen 203 is fixedly connected to the first filter pipe 2. The filter screen 203 is the first layer of filtration, which can filter some solid particulate impurities.

[0027] Furthermore, an extension edge 204 is fixedly provided on the outer side of the bottom end of the first filter tube 2, and a fixed edge 601 is attached to the bottom of the extension edge 204. A second filter tube 6 is fixedly provided inside the fixed edge 601, and a ceramic limiting block 603 is fixedly provided inside the second filter tube 6. The first filter tube 2 and the second filter tube 6 are connected by bolts, which not only ensures stability but also facilitates subsequent disassembly.

[0028] Furthermore, a circular groove 205 is provided at the bottom of the extension edge 204, and a sealing gasket 602 is embedded inside the circular groove 205. The sealing gasket 602 is fixedly connected to the fixed edge 601. The height of the sealing gasket 602 is greater than the depth of the circular groove 205. By squeezing the sealing gasket 602, the sealing between the pipes is ensured, and gas leakage is avoided.

[0029] It is worth noting that a fixing sleeve 7 is slidably provided on the bottom outer side of the second filter tube 6, and a sealing ring 8 is fixedly provided inside the fixing sleeve 7. The sealing ring 8 is in contact with the second filter tube 6. A fixing tube 13 is attached to the bottom inner side of the sealing ring 8, and the fixing tube 13 is fixedly provided on the top surface of the furnace body 1. Lifting the fixing sleeve 7 upwards will loosen the connection between the second filter tube 6 and the fixing tube 13.

[0030] It is worth noting that a support base 9 is fixedly installed on the top surface of the furnace body 1, and the support base 9 is fixedly connected to the gas supply pipe 3. A rotating door 10 is rotatably installed on the front side of the support base 9. The support base 9 serves to fix the gas supply pipe 3 and protect the internal components.

[0031] It is worth mentioning that a base 12 is fixedly installed on the bottom surface of the furnace body 1, and a furnace door 11 is rotatably installed on the front side of the furnace body 1.

[0032] The ceramic limiting block 603 is existing technology and will not be described in detail here. Additionally, this utility model also includes a power supply, controller, and switch, which are not the main technical points of this patent and will not be described in detail here. The "front, rear, left, and right" views of this device are... Figure 1 The direction shown in the diagram is the reference.

[0033] Working principle:

[0034] When using the gas inlet device of a heat treatment furnace with a dust filter, firstly, open the furnace door 11 and place the parts to be heat-treated into the furnace body 1. Then, specific gas is supplied into the furnace body 1 through the gas supply pipe 3. When the gas passes through the filter screen 203 in the first filter pipe 2, some larger particles carried in the gas are filtered out. Then, the gas enters the second filter pipe 6 through the pipe 201, and then undergoes a second filtration through the ceramic limiting block 603. Finally, it is delivered into the furnace body 1 through the fixed pipe 13, thereby ensuring the purity of the gas and the quality of the processed workpiece. After a long period of use, the filter device needs to be disassembled and then... To clean the device, open the rotating door 10 on the outside of the support base 9 to see the fixing assembly. Lift the fixing sleeve 7 upwards and loosen the connection between the second filter tube 6 and the fixing tube 13. The sealing ring 8 inside is used for sealing. Then rotate the fixing screw 5 outwards, and the fixing screw 5 will loosen its connection with the first fixing block 202. Then move the sliding sleeve 4 to the top of the second fixing block 301. At this time, the first filter tube 2 and the second filter tube 6 can be taken out. Then remove the bolts at the fixing edge 601 and the extension edge 204 to clean the filter device. The sealing gasket 602 inside the circular groove 205 is also used for sealing, while the base 12 is used to support the entire device.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat treatment furnace air inlet device with a dust filter, comprising a furnace body (1), characterized in that: The top of the furnace body (1) is provided with a first filter pipe (2), which includes a pipe (201). Multiple first fixing blocks (202) are fixedly installed on the top outer side of the pipe (201). A second fixing block (301) is attached to the top surface of the first fixing block (202). A sliding sleeve (4) is slidably installed on the outer side of the second fixing block (301). A fixing screw (5) is installed through the inside of the sliding sleeve (4), and the threaded end of the fixing screw (5) is threadedly connected to the first fixing block (202).

2. The heat treatment furnace air inlet device with dust filter according to claim 1, characterized in that: An air supply pipe (3) is fixedly installed on the inner side of the second fixed block (301). A filter screen (203) is attached to the bottom end of the air supply pipe (3), and the filter screen (203) is fixedly connected to the first filter pipe (2).

3. The air inlet device for a heat treatment furnace with a dust filter according to claim 1, characterized in that: An extension edge (204) is fixedly provided on the outer side of the bottom end of the first filter tube (2), and a fixed edge (601) is attached to the bottom of the extension edge (204). A second filter tube (6) is fixedly provided inside the fixed edge (601), and a ceramic limiting block (603) is fixedly provided inside the second filter tube (6).

4. The air inlet device for a heat treatment furnace with a dust filter according to claim 3, characterized in that: The bottom of the extended edge (204) is provided with a circular groove (205), and a sealing gasket (602) is embedded inside the circular groove (205). The sealing gasket (602) is fixedly connected to the fixed edge (601), and the height of the sealing gasket (602) is greater than the depth of the circular groove (205).

5. The air inlet device for a heat treatment furnace with a dust filter according to claim 3, characterized in that: A fixing sleeve (7) is slidably provided on the outer bottom of the second filter tube (6). A sealing ring (8) is fixedly provided inside the fixing sleeve (7), and the sealing ring (8) is in contact with the second filter tube (6). A fixing tube (13) is attached to the bottom inner side of the sealing ring (8), and the fixing tube (13) is fixedly provided on the top surface of the furnace body (1).

6. The air inlet device for a heat treatment furnace with a dust filter according to claim 1, characterized in that: The top surface of the furnace body (1) is fixedly provided with a support base (9), and the support base (9) is fixedly connected to the gas supply pipe (3). A rotating door (10) is rotatably provided on the front side of the support base (9).

7. The air inlet device for a heat treatment furnace with a dust filter according to claim 1, characterized in that: A base (12) is fixedly installed on the bottom surface of the furnace body (1), and a furnace door (11) is rotatably installed on the front side of the furnace body (1).

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