Ceramic crucible stack feeding device based on gravity release mechanism
By using a feeding device based on a gravity release mechanism, efficient and safe batch feeding of ceramic crucibles is achieved, solving the problems of low efficiency and high risk of breakage in existing technologies, simplifying the operation process and reducing the risk of crucible breakage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INST OF METAL RESEARCH - CHINESE ACAD OF SCI
- Filing Date
- 2025-05-21
- Publication Date
- 2026-06-09
AI Technical Summary
Existing technologies are inefficient, have a high risk of breakage, and are complex in batch feeding of ceramic crucibles, making it impossible to achieve efficient and safe feeding of multiple rows of crucibles.
The feeding device adopts a gravity release mechanism. Through external stacking pre-loading and gravity release, it realizes efficient batch feeding of ceramic crucibles. Utilizing structures such as bottom pull-out trays, double-sided enclosure components and operating side baffles, it ensures that the crucibles are pre-loaded outside the furnace and then placed into the muffle furnace as a whole to complete the feeding.
It improved work efficiency, reduced the risk of crucible breakage, avoided cracking caused by mechanical vibration, and simplified the operation process.
Smart Images

Figure CN224340643U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high-temperature material processing equipment technology, and in particular to a ceramic crucible stacking and feeding device based on a gravity release mechanism. Background Technology
[0002] A muffle furnace, also known as a box furnace, is a heating device with an internal box-shaped furnace chamber. It is used to heat crucibles containing samples at high temperatures. Crucibles are commonly used laboratory tools, providing cup-shaped containers for high-temperature heating of solids. In research or actual production processes, it is often necessary to feed several crucibles into a muffle furnace simultaneously. For example, ceramic crucibles used in carbon-sulfur analyzers require high-temperature firing in a muffle furnace to remove residual organic matter and moisture before use, resulting in a large amount of crucible pretreatment. Traditional manual stacking methods are time-consuming, have limited space, and are prone to contamination. While the existing pusher-driven device CN220304202 U can achieve partial batch feeding, its effectiveness is limited, requiring adjustment of the lifting mechanism layer by layer, and it cannot complete the feeding of multiple rows of crucibles at once. Furthermore, during the rigid push-driven process of multi-layer stacking, the mechanical vibration caused by friction between upper and lower layers can easily lead to crucible tipping or breakage, resulting in a high risk of crucible damage.
[0003] In summary, existing technologies for batch feeding of ceramic crucibles suffer from problems such as low efficiency, high risk of breakage, and complex structure, and a new solution is urgently needed. Utility Model Content
[0004] The purpose of this invention is to address the problems of low efficiency, high risk of breakage, and complex structure in existing technologies by proposing a feeding device based on a gravity release mechanism. Through external stacking pre-assembly and the gravity release mechanism, this device enables efficient batch feeding of ceramic crucibles, thereby improving work efficiency and reducing the risk of crucible breakage.
[0005] The ceramic crucible stacking and feeding device based on the gravity release mechanism includes the following parts:
[0006] Bottom pull-out tray 1: As a basic component for supporting crucibles, it is used to place stacked crucibles during the pre-assembly stage. A handle 101 is installed at its front end and is fixed by riveting or welding, making it convenient for operators to place the pull-out tray into the grooves of the side panels and perform a sliding pull-out operation.
[0007] The symmetrically arranged side panel assembly 2 has a continuous sliding groove 201 on its inner wall. The height of the groove is greater than the thickness of the pull-out tray 1 to provide stable guidance during tray sliding. The function of the side panel assembly is to provide lateral restraint for the stacked crucibles, preventing lateral sliding of the crucibles during pre-loading and feeding.
[0008] Operating side baffle 3: Connects to the two side enclosure assemblies 2, effectively preventing the crucible from sliding out from the operating side. An anti-interference gap is provided between the bottom end of the baffle 3 and the top surface of the slide groove to ensure that the pull-out tray 1 will not interfere with the baffle during the pulling process. Simultaneously, a separation handle 301 is provided at the upper end of the baffle 3 for pulling out the enclosure assembly 2 after feeding is completed.
[0009] 4. Detachable rigid connector on the furnace opening side: The upper ends of the side panels are fixed by pins or threads at both ends, which enhances the overall rigidity of the device and ensures the stability of the device during use.
[0010] This utility model has the following beneficial effects:
[0011] Efficiency Improvement: By replacing dynamic adjustment with static external pre-installation, operators can complete the stacking and placement of a batch of crucibles outside the furnace in one go, and then place the entire device into the muffle furnace. The entire batch of material can be fed in a single operation, improving work efficiency.
[0012] Reduced breakage: Gravity-assisted operation replaces mechanical drive, gravity is released naturally, there is no mechanical vibration and the impact is small, which reduces the risk of crucible tipping over or breaking. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of the ceramic crucible stacking and feeding device based on the gravity release mechanism of this utility model.
[0014] Figure 2 This is an exploded view of the ceramic crucible stacking and feeding device based on the gravity release mechanism of this utility model;
[0015] In the diagram, 1-bottom pull-out tray, 101-handle, 2-side panel assembly, 201-slide groove, 3-baffle, 301-handle, 4-rigid connector. Detailed Implementation
[0016] A ceramic crucible stacking and feeding device based on a gravity release mechanism, such as Figure 1 and Figure 2 As shown: Includes a bottom pull-out tray 1: serving as the base component for supporting the crucibles, used to place stacked crucibles during the pre-assembly stage; the tray is 1mm thick. A handle 101 is installed at its front end, facilitating the operator to place the pull-out tray into the grooves of the side panels and perform a sliding pull-out operation.
[0017] The symmetrically arranged side panel assembly 2 has a continuous groove 201 on its inner wall, with a groove height of 3mm, which is greater than the thickness of the pull-out tray 1, to provide stable guidance during tray sliding. The function of the side panel assembly is to provide lateral restraint for the stacked crucibles, preventing lateral sliding of the crucibles during pre-loading and feeding.
[0018] Operating side baffle 3: Connects to the two side enclosure assemblies 2, effectively preventing the crucible from sliding out from the operating side. A 5mm anti-interference gap is provided between the bottom end of the baffle 3 and the top surface of the slide groove to ensure that the pull-out tray 1 will not interfere with the baffle during the pulling process. Simultaneously, a separation handle 301 is provided at the upper end of the baffle 3 for pulling out the enclosure assembly 2 after feeding is completed.
[0019] The detachable rigid connector 4 on the furnace opening side enhances the overall rigidity of the entire device and ensures its stability during use.
[0020] Objects to be processed: Φ25×25mm ceramic crucibles, stacked in 5 layers × 8 columns × 10 pieces per batch;
[0021] The utility model device is adapted to the size of a muffle furnace.
[0022] Pre-assembly stage: In a spacious and clean environment outside the furnace, the assembled device's pull-out tray 1 is closed. The ceramic crucibles (approximately ten crucibles per tray, sealed in long strips of paper) are fully opened and stacked on the pull-out tray 1, tilted over. Because this operation is performed outside the furnace, operators have ample space to complete this process, greatly improving stacking efficiency.
[0023] Positioning Stage: Carefully place the entire assembly of crucibles into the muffle furnace, ensuring that the open end of the side panels faces precisely into the furnace chamber. Fine-tuning can be made by observing the positional relationship between the assembly and the muffle furnace opening to ensure that subsequent crucibles can fall smoothly into the furnace chamber.
[0024] Release Phase: The operator holds the handle 101 at the head of the pull-out tray 1 and smoothly pulls the tray outward. During the pulling process, the sliding groove 201 of the surrounding plate assembly 2 provides a stable guide for the pull-out tray, making the pulling operation relatively smooth. As the pull-out tray is pulled out, the crucible gradually detaches from the tray under the action of gravity and falls naturally into the furnace, completing the feeding process.
[0025] Recycling phase:
[0026] After feeding is complete, the operator grasps the separation handle 301 at the upper end of the operating side baffle 3 and pulls the enclosure assembly 2 out of the muffle furnace for recycling. During the extraction process, care should be taken to apply moderate force to avoid damaging the inside of the muffle furnace. The recycled device can be cleaned and inspected to prepare it for the next use.
[0027] The above implementation methods can effectively solve the problems of batch feeding of ceramic crucibles in the prior art, and achieve efficient and low-breakage feeding operation.
[0028] Any matters not covered in this utility model are common knowledge.
[0029] 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 ceramic crucible stack charging device based on a gravity release mechanism, characterized by; The ceramic crucible stacking and feeding device based on gravity release mechanism includes a bottom pull-out tray (1), a double-sided symmetrically arranged enclosure assembly (2), an operating side baffle (3), and a detachable rigid connector on the furnace opening side (4). The inner wall of the enclosure assembly (2) is provided with a continuous groove (201), the height of which is greater than the thickness of the pull-out tray (1) to form a stable guide during the sliding of the tray; the operating side baffle (3) connects the two side enclosure assemblies (2) to prevent the crucible from sliding outward; the two ends of the detachable rigid connector (4) on the furnace opening side are fixed to the upper end of the two side enclosures by pins or threads to enhance the overall rigidity; the pull-out tray (1) forms a sliding fit with the enclosure assembly (2) through the groove (201), and the crucible falls into the furnace under the action of gravity when pulled out.
2. A gravity release mechanism based ceramic crucible stack charging device according to claim 1, characterized by; The pull-out tray (1) is equipped with a handle (101) at its first end, which is fixed by riveting or welding. The axis of the handle (101) is perpendicular to the pull-out direction and parallel to the plane of the baffle (3). When the pull-out tray (1) is fully pushed into the groove (201), the inner side of the handle (101) fits against the outer side of the baffle (3) to form a sliding limiting structure.
3. The ceramic crucible stacking and feeding device based on gravity release mechanism according to claim 1, characterized in that; The width W of the pull-out tray (1) satisfies the following relationship: S+D≤W≤S+2D; D is the groove depth and S is the inner spacing of the surrounding panel.
4. The gravity release mechanism based ceramic crucible stack charging device, as claimed in claim 1, wherein; An anti-interference gap is provided between the bottom end of the baffle (3) and the top surface of the slide groove to ensure that there is no interference when the pull-out tray (1) is pulled out.
5. The gravity release mechanism based ceramic crucible stack charging device, as claimed in claim 1, wherein; The baffle (3) is provided with a separation handle (301) at the upper end for pulling out the enclosure assembly (2).