Well-type furnace with convenient workpiece loading and unloading

Abstract

The utility model relates to a kind of well-type furnace of convenient workpiece, belong to well-type furnace technical field, including well-type furnace body and first placement tray, the left and right sides of well-type furnace body are equipped with driving mechanism, the upper surface of first placement tray is equipped with connecting mechanism, the inside of well-type furnace body is fixed with inner furnace shell by connecting block, the inner circumference wall of inner furnace shell is fixed with several carbon silicon rods. The well-type furnace of convenient workpiece, by simultaneously starting the electric push rod of left and right sides, then, electric push rod drives first placement tray to move downwards, until the lower surface of first placement tray and the upper surface of support block contact, at this time, close electric push rod, and start several carbon silicon rods to heat workpiece, after heating is completed, electric push rod is started again, and heated workpiece is pushed to the upside of inner furnace shell, and workpiece is conveniently taken out, to reduce the tediousness of manual operation.

Description

Technical Field

[0001] This utility model relates to the field of pit furnace technology, specifically a pit furnace that facilitates the loading and unloading of workpieces. Background Technology

[0002] Pit furnaces are a common type of equipment in heat treatment. Their furnace bodies are usually buried underground, while the furnace doors and workpiece support devices are on the ground. Pit furnaces are used to process components with high temperature requirements. Pit furnaces have a large internal space and are generally used to process relatively large workpieces.

[0003] For example, CN216953994U discloses a pit furnace for convenient workpiece loading and unloading, relating to the field of pit furnace technology. This utility model includes a main body structure, a fixing structure, a power structure, a detection structure, and a control structure. The main body structure includes a pit furnace body, an inner furnace shell, and an inner furnace. The pit furnace body is a hollow structure, with the inner furnace shell installed inside the pit furnace body and the inner furnace located inside the inner furnace shell. The fixing structure includes a left furnace cover, a right furnace cover, a crossbeam, a longitudinal beam, and a rotating shaft. The upper surface of the pit furnace body is provided with several sliding grooves, and the left and right furnace covers slide in cooperation with the sliding grooves. This utility model is a pit furnace for convenient workpiece loading and unloading. By setting up detection thermocouples and temperature control thermocouples to work together, the detection thermocouples are responsible for detecting whether the internal temperature meets the requirements, and the temperature control thermocouples control the temperature based on the detection data, making the heat treatment more precise and increasing the safety of the heat treatment.

[0004] Although the temperature-controlling thermocouple in the aforementioned patent controls the temperature based on the detection data, making the heat treatment more precise and increasing the safety of the heat treatment, the prior art of this patent involves placing the workpiece into the pit furnace by suspending it with a lifting device that is hung on a crossbeam, making it cumbersome to remove the workpiece and reducing its practicality. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a pit furnace that facilitates the placement and retrieval of workpieces. It has advantages such as making it easier to place and retrieve workpieces and reducing the cumbersomeness of manual operation. It solves the problem that placing workpieces into the pit furnace by suspending them with a lifting device that is hung on a crossbeam makes it cumbersome to retrieve the workpieces and reduces their practicality.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A pit furnace for easy placement and retrieval of workpieces includes a pit furnace body and a first placement tray. The pit furnace body is provided with a drive mechanism on the left and right sides. The upper surface of the first placement tray is provided with a connecting mechanism. An inner furnace shell is fixed inside the pit furnace body by a connecting block. Several silicon carbide rods are fixed on the inner peripheral wall of the inner furnace shell.

[0008] The driving mechanism includes electric push rods fixed on the left and right sides of the pit furnace body. A furnace cover is fitted on the upper surface of the pit furnace body. Insertion brackets are fixed on both the left and right sides of the lower surface of the furnace cover. The outer sides of the output shafts of the electric push rods on both the left and right sides are slidably inserted into the interior of the bottom end of the insertion brackets on both the left and right sides. Connecting rods are fixed on both the left and right sides of the lower surface of the furnace cover. The bottom ends of the connecting rods on both the left and right sides are fixedly connected to the left and right sides of the upper surface of the first placement plate. A support block is fixed on the bottom wall of the inner cavity of the inner furnace shell. The lower surface of the first placement plate is in contact with the upper surface of the support block.

[0009] Furthermore, the drive mechanism also includes an exhaust pipe connected to the upper surface of the furnace cover, and a thermometer is provided on the left side of the upper surface of the furnace cover.

[0010] Furthermore, the connecting mechanism includes four first insertion holes formed on the upper surface of the first placement plate, each of which has a first support rod slidably inserted into its interior, and a second placement plate fixed to the top of each of the four first support rods.

[0011] Furthermore, the connecting mechanism also includes four second insertion holes on the upper surface of the second placement plate, each of which has a second support rod slidably inserted inside, and a third placement plate fixed to the top of each of the four second support rods.

[0012] Furthermore, several of the silicon carbide rods are evenly distributed on the inner peripheral wall of the inner furnace shell.

[0013] Furthermore, the electric push rods on the left and right sides are symmetrically distributed on the left and right sides of the longitudinal central axis of the pit furnace body.

[0014] Furthermore, the first placement tray, the second placement tray, and the third placement tray are all alumina ceramic trays.

[0015] Furthermore, the four first insertion holes are rectangularly distributed on the upper surface of the first placement plate.

[0016] Compared with the prior art, this utility model provides a pit furnace that facilitates the loading and unloading of workpieces, and has the following beneficial effects:

[0017] 1. This pit-type furnace, which facilitates the placement and removal of workpieces, simultaneously activates the electric push rods on both the left and right sides. The first placement plate is pushed upwards. When the first placement plate rises to the upper side of the inner furnace shell, the output shaft of the electric push rod stops driving upwards. At this time, the workpiece to be heated can be placed on the upper surface of the first placement plate. Subsequently, the electric push rod drives the first placement plate downwards until the lower surface of the first placement plate contacts the upper surface of the support block. At this time, the electric push rod is turned off, and several silicon carbide rods are activated to heat the workpiece. After heating is completed, the electric push rod is activated again to push the heated workpiece upwards to the upper side of the inner furnace shell, making it easy to remove the workpiece and thus reducing the tediousness of manual operation.

[0018] 2. This pit-type furnace, which facilitates the placement and removal of workpieces, allows for the placement of workpieces on the upper surfaces of both the second and third placement trays, enabling simultaneous heating of multiple workpieces. The multi-layer placement design significantly improves heating efficiency and equipment utilization. The placement trays can be removed from the equipment by pulling them upwards for easy cleaning. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the drive mechanism of this utility model;

[0021] Figure 3 This is a schematic diagram of the connection mechanism of this utility model.

[0022] In the figure: 1. Well-type furnace body, 2. First placement plate, 3. Drive mechanism, 301. Electric push rod, 302. Furnace cover, 303. Plug-in bracket, 304. Connecting rod, 305. Support block, 4. Connecting mechanism, 401. First plug-in hole, 402. First support rod, 403. Second placement plate, 404. Second plug-in hole, 405. Second support rod, 406. Third placement plate, 5. Inner furnace shell, 6. Silicon carbide rod. 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] Please see Figure 1This embodiment of a pit furnace for convenient placement and retrieval of workpieces includes a pit furnace body 1 and a first placement tray 2. The pit furnace body 1 is provided with a drive mechanism 3 on the left and right sides. The upper surface of the first placement tray 2 is provided with a connecting mechanism 4. The pit furnace body 1 is fixed with an inner furnace shell 5 through a connecting block. Several silicon carbide rods 6 are fixed on the inner peripheral wall of the inner furnace shell 5.

[0025] In this embodiment, several silicon carbide rods 6 are evenly distributed on the inner peripheral wall of the inner furnace shell 5. The silicon carbide rods 6 serve as heating tools to heat the workpiece. The several silicon carbide rods 6 are distributed in a circular shape on the inner peripheral wall of the inner furnace shell 5, which is made of alumina ceramic material.

[0026] Please see Figure 2 In this embodiment, the drive mechanism 3 includes electric push rods 301 fixed on the left and right sides of the pit furnace body 1. The upper surface of the pit furnace body 1 is covered with a furnace cover 302. The left and right sides of the lower surface of the furnace cover 302 are fixed with plug-in brackets 303. The outer sides of the output shafts of the electric push rods 301 on the left and right sides are slidably inserted into the bottom of the plug-in brackets 303 on the left and right sides. The left and right sides of the lower surface of the furnace cover 302 are fixed with connecting rods 304. The bottom ends of the connecting rods 304 on the left and right sides are fixedly connected to the left and right sides of the upper surface of the first placement plate 2. The bottom wall of the inner cavity of the inner furnace shell 5 is fixed with a support block 305. The lower surface of the first placement plate 2 is in contact with the upper surface of the support block 305. The two connecting rods 304 and the furnace cover 302 are all made of tungsten metal material, which has the characteristics of high temperature resistance.

[0027] Specifically, the drive mechanism 3 also includes an exhaust pipe connected to the upper surface of the furnace cover 302. A thermometer is provided on the left side of the upper surface of the furnace cover 302. The electric push rods 301 on the left and right sides are symmetrically distributed on the left and right sides of the longitudinal central axis of the well furnace body 1. The outer side of the output shaft of the electric push rods 301 on the left and right sides can be removed from the inside of the plug-in brackets 303 on the left and right sides.

[0028] It should be noted that by simultaneously activating the electric push rods 301 on both the left and right sides, the electric push rods 301 push the furnace cover 302, the two connecting rods 304, and the first placement plate 2 upward through the plug-in bracket 303. When the first placement plate 2 rises to the upper side of the inner furnace shell 5, the output shaft of the electric push rod 301 stops driving upward. At this time, the workpiece to be heated can be placed on the upper surface of the first placement plate 2. Subsequently, the electric push rod 301 simultaneously drives the furnace cover 302, the connecting rods 304, and the first placement plate 2 downward until the lower surface of the first placement plate 2 contacts the upper surface of the support block 305. At this time, the electric push rod 301 is turned off, and several silicon carbide rods 6 are activated to heat the workpiece. After heating is completed, the electric push rod 301 is activated again to push the heated workpiece upward to the upper side of the inner furnace shell 5, making it easier to remove the workpiece and thus reducing the tediousness of manual operation.

[0029] Please see Figure 3 In this embodiment, the connecting mechanism 4 includes four first insertion holes 401 formed on the upper surface of the first placement plate 2. Each of the four first insertion holes 401 is slidably inserted with a first support rod 402, and the top of each of the four first support rods 402 is fixed with a second placement plate 403.

[0030] Specifically, the connecting mechanism 4 also includes four second insertion holes 404 on the upper surface of the second placement plate 403. Each of the four second insertion holes 404 has a second support rod 405 slidably inserted inside. The top of each of the four second support rods 405 is fixed with a third placement plate 406. The first placement plate 2, the second placement plate 403 and the third placement plate 406 are all alumina ceramic plates. The four first insertion holes 401 are rectangularly distributed on the upper surface of the first placement plate 2. The first support rod 402 and the second support rod 405 are both made of tungsten metal, which has the characteristics of high temperature resistance.

[0031] It should be noted that workpieces can be placed on the upper surfaces of the second placement plate 403 and the third placement plate 406, multiple workpieces can be heated, and the second placement plate 403 and the third placement plate 406 can be pulled upwards for disassembly.

[0032] The working principle of the above embodiments is as follows:

[0033] In use, by simultaneously activating the electric push rods 301 on both the left and right sides, the electric push rods 301 push the furnace cover 302, the two connecting rods 304, and the first placement plate 2 upwards via the plug-in bracket 303. When the first placement plate 2 rises to the upper side of the inner furnace shell 5, the output shaft of the electric push rod 301 stops driving upwards. At this time, the workpiece to be heated can be placed on the upper surface of the first placement plate 2. Subsequently, the electric push rods 301 simultaneously drive the furnace cover 302, the connecting rods 304, and the first placement plate 2 downwards until the lower surface of the first placement plate 2 is reached. When the workpiece is in contact with the upper surface of the support block 305, the electric push rod 301 is turned off and several silicon carbide rods 6 are started to heat the workpiece. After heating is completed, the electric push rod 301 is started again to push the heated workpiece upward to the upper side of the inner furnace shell 5, so as to facilitate the removal of the workpiece and reduce the tediousness of manual operation. Workpieces can be placed on the upper surface of the second placement plate 403 and the third placement plate 406. Multiple workpieces can be heated. The second placement plate 403 and the third placement plate 406 can be pulled upward for disassembly.

[0034] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[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 pit furnace for convenient placement and retrieval of workpieces, comprising a pit furnace body (1) and a first placement tray (2), characterized in that: The well furnace body (1) is provided with a drive mechanism (3) on the left and right sides, and the upper surface of the first placement plate (2) is provided with a connecting mechanism (4). The inner furnace shell (5) is fixed inside the well furnace body (1) by a connecting block, and several silicon carbide rods (6) are fixed on the inner peripheral wall of the inner furnace shell (5). The driving mechanism (3) includes electric push rods (301) fixed on the left and right sides of the pit furnace body (1). The upper surface of the pit furnace body (1) is covered with a furnace cover (302). The left and right sides of the lower surface of the furnace cover (302) are fixed with plug-in brackets (303). The outer side of the output shaft of the electric push rods (301) on the left and right sides is slidably inserted into the bottom of the plug-in brackets (303) on the left and right sides. The left and right sides of the lower surface of the furnace cover (302) are fixed with connecting rods (304). The bottom ends of the connecting rods (304) on the left and right sides are fixedly connected to the left and right sides of the upper surface of the first placement plate (2). The bottom wall of the inner cavity of the inner furnace shell (5) is fixed with a support block (305). The lower surface of the first placement plate (2) is in contact with the upper surface of the support block (305).

2. A pit-type furnace for convenient placement and removal of workpieces according to claim 1, characterized in that: The drive mechanism (3) also includes an exhaust pipe connected to the upper surface of the furnace cover (302), and a thermometer is provided on the left side of the upper surface of the furnace cover (302).

3. A pit-type furnace for convenient placement and removal of workpieces according to claim 1, characterized in that: The connecting mechanism (4) includes four first insertion holes (401) opened on the upper surface of the first placement plate (2). Each of the four first insertion holes (401) is slidably inserted with a first support rod (402). The top of each of the four first support rods (402) is fixed with a second placement plate (403).

4. A pit-type furnace for convenient placement and removal of workpieces according to claim 3, characterized in that: The connecting mechanism (4) further includes four second insertion holes (404) on the upper surface of the second placement plate (403). Each of the four second insertion holes (404) is slidably inserted with a second support rod (405), and a third placement plate (406) is fixed to the top of each of the four second support rods (405).

5. A pit-type furnace for convenient placement and removal of workpieces according to claim 1, characterized in that: Several silicon carbide rods (6) are evenly distributed on the inner peripheral wall of the inner furnace shell (5).

6. A pit furnace for convenient placement and removal of workpieces according to claim 1, characterized in that: The electric push rods (301) on the left and right sides are symmetrically distributed on the left and right sides of the longitudinal central axis of the pit furnace body (1).

7. A pit-type furnace for convenient placement and removal of workpieces according to claim 4, characterized in that: The first placement plate (2), the second placement plate (403) and the third placement plate (406) are all alumina ceramic plates.

8. A pit furnace for convenient loading and unloading of workpieces according to claim 3, characterized in that: The four first insertion holes (401) are rectangularly distributed on the upper surface of the first placement plate (2).

Images