Furnace door locking mechanism of vacuum high-temperature furnace

Abstract

The utility model relates to a furnace door locking mechanism of a vacuum high-temperature furnace, which is mounted on a furnace body and a furnace door, a first flange ring is formed at an opening of the furnace body, a second flange ring matched with the first flange ring is formed at the edge of the furnace door, and the furnace door locking mechanism comprises a plurality of lower wedge blocks and a plurality of upper wedge blocks, the multiple lower wedge blocks are installed on the side face of the second flange ring at intervals. The rotating mechanism comprises a connecting ring rotationally arranged on the furnace body in a sleeving manner, a bearing ring formed on the inner circle of the connecting ring, and a plurality of upper wedge blocks which are mounted on the inner surface of the bearing ring and are matched with the lower wedge blocks in a one-to-one correspondence manner; and the driving mechanisms are installed on the furnace body or the first flange ring, connected with the connecting ring and used for driving the rotating mechanism to rotate so that the upper wedge block can make contact with or be separated from the lower wedge block. And the upper wedge block moves to be in contact with the lower wedge block, so that the furnace body and the furnace door are locked.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum high-temperature furnace technology, and relates to a locking mechanism, specifically a furnace door locking mechanism for a vacuum high-temperature furnace. Background Technology

[0002] A vacuum high-temperature furnace is a process testing instrument used for ceramic powder synthesis and pressureless sintering of ceramic green bodies. This equipment can reach temperatures up to 2000℃ in a vacuum or atmospheric environment, can process samples with a maximum size of 150mm × 200mm, and supports multi-layer placement to improve processing efficiency. Its maximum working pressure is 0.6MPa, making it suitable for high-temperature material research and production.

[0003] Chinese utility model patent application number 201922400747.7 discloses a vacuum high-temperature furnace testing device, including a vacuum furnace with a furnace door at the front and an extensometer installed at the rear. The extensometer's probe penetrates the vacuum furnace to directly contact the sample for measurement. Stainless steel corrugated pipes are symmetrically installed on the upper and lower sides of the vacuum furnace, and clamps are installed inside the corrugated pipes. A high-temperature furnace with a multi-layer metal heat shield is built into the vacuum furnace. The sample is clamped and fixed inside the high-temperature furnace by the clamps. The vacuum furnace is connected to a vacuum pump via a vacuum pipe. The outer wall of the vacuum furnace has a double-layer water-cooled structure, and the water-cooled layer is connected to a water chiller via a pipeline. This utility model's vacuum high-temperature furnace testing device possesses high vacuum and a wide range of high-temperature heating capabilities, enabling its use in conjunction with a materials mechanics testing machine. It greatly assists in the research and development of new materials, enabling various mechanical tests on materials under different temperature environments, including tensile, compression, bending, shear, fatigue, creep, and stress relaxation tests. However, the furnace door of this vacuum furnace is installed at the front using conventional hinges, resulting in a simple structure but poor sealing. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a furnace door locking mechanism for a vacuum high-temperature furnace.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a furnace door locking mechanism for a vacuum high-temperature furnace, which is installed on the furnace body and the furnace door. A first flange ring is formed at the opening of the furnace body, and a second flange ring that mates with the first flange ring is formed at the edge of the furnace door.

[0006] It includes:

[0007] Multiple lower wedges are spaced apart and installed on the side of the second flange ring;

[0008] The rotating mechanism includes a connecting ring rotatably sleeved on the furnace body, a bearing ring formed in the inner ring of the connecting ring, and a plurality of upper wedges installed on the inner surface of the bearing ring and corresponding to the lower wedges.

[0009] Multiple sets of drive mechanisms are installed on the furnace body or the first flange ring and connected to the connecting ring, for driving the rotating mechanism to rotate so that the upper wedge block contacts or separates from the lower wedge block.

[0010] Ideally, an annular groove is formed on the outer end face of the first flange ring, and a sealing ring is installed in the annular groove; when the first flange ring and the second flange ring are in contact, the sealing ring ensures the sealing between the first flange ring and the second flange ring.

[0011] Furthermore, multiple lower wedges are equally spaced and mounted on the side of the second flange ring, and are rotationally symmetrical about the axis of the furnace door.

[0012] Ideally, the drive mechanism consists of two sets, which are symmetrical about the centerline of the furnace door.

[0013] Furthermore, each set of the drive mechanism includes a first support mounted on the first flange ring, a cylinder pivotally connected to the first support, and a second support pivotally connected to the cylinder piston rod and mounted on the connecting ring.

[0014] Furthermore, it also includes multiple support plates installed on the first flange ring and spaced apart.

[0015] Furthermore, the inner surface of the connecting ring is provided with multiple sets of recesses corresponding to the support plate, and each set of recesses is provided with at least one ball bearing supported on the support plate.

[0016] The beneficial effects of this application are: the furnace door locking mechanism of the vacuum high temperature furnace of this utility model, by using a lower wedge block, a rotating mechanism and multiple sets of driving mechanisms in combination, can use the driving mechanism to drive the rotating mechanism to rotate, so that the upper wedge block moves to contact the lower wedge block to lock the furnace body and the furnace door, which is conducive to further improving the connection strength and sealing of the furnace body and the furnace door. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the application of the furnace door locking mechanism of the vacuum high-temperature furnace of this utility model;

[0018] Figure 2 for Figure 1 Top view;

[0019] Figure 3This is a partial structural diagram of the furnace door locking mechanism of the vacuum high-temperature furnace of this utility model;

[0020] Figure 4 This is a cross-sectional view of the furnace door locking mechanism of the vacuum high-temperature furnace of this utility model. Detailed Implementation

[0021] The present application will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0022] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0023] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0024] like Figure 1 and Figure 2 The furnace door locking mechanism of the vacuum high-temperature furnace shown is installed on the furnace body 21 and the furnace door 22 (the furnace body 21 and the furnace door 22 can be opened and closed in the existing conventional manner; or according to...). Figure 1 The double pivot structure allows the furnace door 22 to be mounted on the support frame, and a handle is installed on the outer surface of the furnace door 22 so that the furnace door 22 can be manually opened and closed on the furnace body 21, thereby improving the connection strength (firmness) and sealing of the furnace body 21 and the furnace door 22.

[0025] Specifically, a first flange ring 23 is formed at the opening of the furnace body 21 (the formation method can be welding or integral molding, etc., the same below), and a second flange ring 221 that mates with the first flange ring 23 is formed at the edge of the furnace door 22; when the furnace door 22 is closed onto the furnace body 21, the first flange ring 23 and the second flange ring 221 come into contact (e.g., Figure 4 (As shown). In this embodiment, an annular groove is provided on the outer end face of the first flange ring 23 (i.e., the end face facing the second flange ring 221), and a sealing ring 20 is installed in the annular groove; when the first flange ring 23 and the second flange ring 221 are in contact, the sealing ring 20 can ensure the sealing between the first flange ring 23 and the second flange ring 221, thereby ensuring the sealing of the entire vacuum high-temperature furnace.

[0026] The furnace door locking mechanism of the vacuum high-temperature furnace includes a lower wedge block 24, a rotating mechanism 26, and a driving mechanism 25.

[0027] There are multiple lower wedge blocks 24, which are installed at intervals on the side of the second flange ring 221; in this embodiment, there are eight lower wedge blocks 24, which are installed at equal intervals on the side (i.e., the outer circumferential surface) of the second flange ring 221 and are rotationally symmetrical about the axis of the furnace door 22 (or furnace body 21).

[0028] The rotating mechanism 26 includes a connecting ring 261 rotatably fitted onto the furnace body 21 (located on the outer ring of the first flange ring 23), a bearing ring 262 formed on the inner ring of the connecting ring 261 (preferably with the inner diameter of the bearing ring 262 equal to the inner diameter of the connecting ring 261), and a plurality of upper wedges 263 mounted on the inner surface of the bearing ring 262 and correspondingly cooperating with the lower wedges 24. Preferably, there are eight upper wedges 263. The surfaces of the upper wedges 263 and the lower wedges 24 facing each other can be flat, or they can be mating concave or convex arc surfaces, thereby improving the interlocking effect between the upper wedges 263 and the lower wedges 24. Figure 3 As shown.

[0029] There are multiple sets of drive mechanisms 25. In this embodiment, there are two sets of drive mechanisms 25, which are symmetrical about the axis of the furnace door 22. The multiple sets of drive mechanisms 25 are installed on the furnace body 21 or the first flange ring 23 and connected to the connecting ring 261. They are used to drive the rotating mechanism 26 to rotate so that the upper wedge block 263 contacts (locks) or separates from the lower wedge block 24 (opens). Specifically, each drive mechanism 25 includes a first support 251 mounted on the first flange ring 23 (the first support 251 is mounted on the bottom surface of the first flange ring 23 (i.e. the surface facing the furnace body 21) by multiple fasteners), a cylinder 252 pivotally connected to the first support 251 (i.e., one end of the cylinder 252 is provided with a pivot seat, which is pivotally connected to the first support 251), and a second support 253 pivotally connected to the piston rod of the cylinder 252 (i.e., the other end of the cylinder 252) and mounted on the connecting ring 261 (i.e., another pivot seat is mounted on the free end of the piston rod of the cylinder 252, which is pivotally connected to the second support 253, and the second support 253 is mounted on the connecting ring 261 by multiple fasteners). In this way, the drive mechanism 25 can drive the rotating mechanism 26 to rotate, so that the upper wedge 263 moves to contact the lower wedge 24 to lock the furnace body and furnace door, which is beneficial to further improve the connection strength and sealing of the furnace body and furnace door; when the drive mechanism 25 is reset, the upper wedge 263 is disengaged from the lower wedge 24 to lock.

[0030] In this embodiment, the furnace door locking mechanism of the vacuum high-temperature furnace also includes multiple support plates 27 installed on the first flange ring 23 and spaced apart. In this embodiment, there are four support plates 27 arranged at equal intervals. The inner surface of the connecting ring 261 has multiple sets of recessed holes corresponding to the support plates 27 (each set of recessed holes contains two recessed holes). Each set of recessed holes is provided with at least one ball bearing 28 supported on the support plate 27 (the number of ball bearings 28 is the same as the number of recessed holes). This allows the connecting ring 261 and the first flange ring 23 to have rolling friction, thereby reducing the resistance that the drive mechanism 25 needs to overcome when working and improving the convenience of the furnace door locking mechanism of the vacuum high-temperature furnace.

[0031] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A furnace door locking mechanism for a vacuum high-temperature furnace, which is installed on the furnace body (21) and the furnace door (22), wherein a first flange ring (23) is formed at the opening of the furnace body (21) and a second flange ring (221) is formed at the edge of the furnace door (22) to cooperate with the first flange ring (23). characterized in that It includes: Multiple lower wedges (24) are spaced apart and mounted on the side of the second flange ring (221); The rotating mechanism (26) includes a connecting ring (261) rotatably sleeved on the furnace body (21), a bearing ring (262) formed in the inner ring of the connecting ring (261), and a plurality of upper wedges (263) installed on the inner surface of the bearing ring (262) and correspondingly cooperating with the lower wedges (24). Multiple sets of drive mechanisms (25) are installed on the furnace body (21) or the first flange ring (23) and connected to the connecting ring (261) to drive the rotating mechanism (26) to rotate so that the upper wedge (263) contacts or separates from the lower wedge (24).

2. The door locking mechanism of a vacuum high-temperature furnace according to claim 1, characterized in that: A ring groove is provided on the outer end face of the first flange ring (23), and a sealing ring (20) is installed in the ring groove; when the first flange ring (23) and the second flange ring (221) are in contact, the sealing ring (20) ensures the sealing between the first flange ring (23) and the second flange ring (221).

3. The door locking mechanism of a vacuum high-temperature furnace according to claim 1 or 2, characterized in that: Multiple lower wedges (24) are equally spaced on the side of the second flange ring (221) and are rotationally symmetrical about the axis of the furnace door (22).

4. The door locking mechanism of a vacuum high-temperature furnace according to claim 1, wherein: The drive mechanism (25) consists of two sets, which are symmetrical about the axis of the furnace door (22).

5. The door locking mechanism of a vacuum high-temperature furnace according to claim 4, wherein: Each set of drive mechanisms (25) includes a first support (251) mounted on the first flange ring (23), a cylinder (252) pivotally connected to the first support (251), and a second support (253) pivotally connected to the piston rod of the cylinder (252) and mounted on the connecting ring (261).

6. The door locking mechanism of a vacuum high-temperature furnace according to claim 5, wherein: It also includes multiple support plates (27) installed on the first flange ring (23) and spaced apart.

7. The door locking mechanism of a vacuum high-temperature furnace according to claim 6, wherein: The inner surface of the connecting ring (261) is provided with multiple sets of recesses corresponding to the support plate (27), and each set of recesses is provided with at least one ball (28) supported on the support plate (27).

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