Fixture for prolonging service life of medium-sample glass casting crucible lining
Through the design of ductile iron hand-held rod and I-shaped semi-circular arc-surface clamp, the uniform contact between the glass casting fixture and the crucible bushing at high temperature is achieved, which solves the problem of prone to cracks in the existing technology, and extends the The service life of the bushing and improves operating safety.
Patent Information
- Application Number
- CN202420063132.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-01-10
AI Technical Summary
Existing glass casting fixtures are prone to deformation and cracks when they come into contact with crucible bushing at high temperatures, resulting in a shortening of the bushing life.
A clamp including a ductile iron hand rod and an I-shaped semi-circular surface clamp are designed to increase the contact surface and utilize the thermal conductivity of the ductile iron to uniformly distribute the temperature and extend the bushing. Service life.
It effectively extends the service life of the crucible bushing, avoids crack problems caused by uneven stress and temperature distribution, so that the bushing can be removed safely and smoothly at high temperatures and reduces the replacement frequency.
Smart Images
Figure CN222270283U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of glass casting, in particular to a clamp for prolonging the service life of a liner of a crucible for casting medium-sample glass. Background Art
[0002] In the process of melting sample glass in laboratory research, the casting and molding process of glass samples requires the use of crucible tongs to clamp the crucible bushing for discharge. The existing clamps in the laboratory are in line contact with the bushing, and are made of stainless steel. The pouring and discharging temperature of the sample glass is 1300-1700℃, while the temperature of the crucible tongs is 30-50℃. Under high temperature conditions, the crucible tongs are easily deformed when in contact with the bushing, and the line contact becomes point contact. Due to the rapid drop in heat conduction, the bushing cracks locally. The bushing is subjected to increased force during clamping. In order to avoid the crucible bushing from shaking back and forth, up and down, and left and right during the pouring process, the operator must continue to increase the force on the outer wall of the crucible bushing. Under high temperature conditions, the clamp is deformed due to heat and is in point-to-point contact with the crucible bushing. The point is continuously subjected to large force and is prone to cracks, causing the bushing to break, reducing the service life of the bushing. The combined influence of factors has led to a sharp reduction in life. The designed service life of the bushing is 30 days, and the actual service life is about 15 days. The replacement and reuse cycle of a damaged bushing is 2 to 3 days, which seriously affects the melting of glass samples. Therefore, the optimization and transformation of the fixture is the fundamental solution to the short life of the bushing. Summary of the invention
[0003] The utility model aims to solve the problems in the prior art and provide a clamp for extending the life of a liner of a glass casting crucible, thereby solving the problem that cracks easily occur in the liner when the prior clamp is clamped, resulting in a short life of the liner.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A clamp for extending the life of a liner of a medium sample glass pouring crucible, comprising two hand-held rods and a clamp;
[0006] The two hand-held rods are fixedly connected by a rotating shaft through cross rotation, one end of the hand-held rod is connected to an arc-shaped transition part, the clamp is installed on the transition part, and the materials of the rotating shaft, the transition part and the clamp are all ductile iron.
[0007] Furthermore, a locking device is provided at the other end of the hand-held rod.
[0008] Furthermore, the other end of the hand-held rod is a hollow regular quadrangular prism.
[0009] Furthermore, a balancing device is provided on the hand-held rod, and a heat insulation baffle is provided between the balancing device and the rotating shaft.
[0010] Furthermore, the materials of the hand-held rod, the balancing device and the heat insulation baffle are all stainless steel.
[0011] Furthermore, the transition portion is connected to the clamp via a plurality of reinforcement members.
[0012] Furthermore, the reinforcement member is made of ductile iron.
[0013] Furthermore, the clamp is an I-shaped reinforced semicircular arc surface, and the curvature of the clamp matches the curvature of the crucible liner.
[0014] Furthermore, both ends of the transition portion are connected with hand-held rods.
[0015] Furthermore, the contact end of the hand-held rod is a plane.
[0016] Compared with the prior art, the utility model has the following beneficial effects:
[0017] The utility model provides a clamp for extending the life of a crucible bushing for pouring medium-sample glass. A semicircular arc surface clamp that matches the curvature of the crucible bushing and is reinforced with an I-shaped shape is arranged on the transition part at the top of the hand-held rod. A surface-contact crucible bushing clamp is used to make the clamp fit tightly with the crucible bushing. The contact surface with the crucible bushing is increased to make the force more uniform, so that the crucible bushing can be quickly and effectively clamped and safely and smoothly taken out from high temperature. The material of the optimized design is ductile iron, which has fast heat conduction and small heat storage, so that the contact part can be more evenly stressed and the temperature cooling distribution can be more evenly distributed, while reducing the cooling of the crucible bushing, thereby delaying the occurrence of local cracks in the crucible bushing due to uneven force at high temperature. The utility model has a simple structure and is very convenient to operate. When the medium sample glass is discharged and poured, the clamp and the crucible bushing fit tightly together, which not only makes the force more uniform but also makes the temperature cooling distribution of the contact surface more uniform, thereby delaying the occurrence of local cracks in the crucible bushing due to uneven force or temperature distribution, and can effectively extend the service life of the crucible bushing.
[0018] Furthermore, the curvature of the semicircular arc surface of the clamp can be adjusted according to the curvature of the crucible bushing, and has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 It is a schematic diagram of the overall structure of the single-person clamp of the utility model.
[0021] Figure 2 It is a schematic diagram of the overall structure of the double-handled clamp of the utility model.
[0022] Among them: 1-handle rod, 2-locking device, 3-balancing device, 4-heat insulation baffle, 5-rotating shaft, 6-transition part, 7-reinforcement part, 8-clamp. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0026] In the description of the embodiments of the present utility model, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0027] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0028] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0029] The utility model is further described in detail below with reference to the accompanying drawings:
[0030] The utility model provides a clamp for extending the service life of a crucible bushing for pouring medium-sample glass, comprising two hand-held rods 1 and a semicircular arc clamp 8 that matches the curvature of the crucible bushing. The two hand-held rods 1 are cross-rotated and fixedly connected via a rotating shaft 5. The top end of the hand-held rod 1 is connected to a transition portion 6, and the transition portion 6 is in an arc shape. The transition portion 6 is tightly connected to the clamp 8 via a plurality of reinforcement members 7, and the plurality of reinforcement members 7 are connected to the clamp 8 in an I-shaped manner. The clamp 8 is set to a semicircular arc surface, and the clamp 8 can be adjusted according to the size of the crucible bushing so that the curvature of the semicircular arc surface of the clamp 8 matches the curvature of the crucible bushing. The clamp 8 fits tightly with the crucible bushing, increasing the contact surface with the crucible bushing, so that the force on the contact part of the crucible bushing is relatively uniform, which is convenient for quickly clamping and safely and smoothly removing the crucible bushing from high temperature. The materials of the rotating shaft 5, the transition part 6, the reinforcement 7 and the clamp 8 are all ductile iron. Ductile iron has fast thermal conductivity and small heat storage, which avoids deformation at high temperatures. Therefore, when the medium sample glass is discharged and poured, the cooling distribution of the contact surface temperature is relatively uniform, and the cooling of the crucible liner is small, so that the temperature does not drop too quickly or the temperature distribution is uneven, which may cause local cracks in the crucible liner.
[0031] The tail end of the hand-held rod 1 is a hollow regular quadrangular prism, and the contact end surface of the hand-held rod 1 and the hand is arranged in a plane, which improves the stability of the contact between the hand-held rods 1. A locking device 2 is installed at the tail end of the hand-held rod 1. After tightening the crucible bushing, the two hand-held rods 1 are locked and fixed by the locking device 2, and the crucible bushing can be quickly and smoothly taken out. The hand-held end of the hand-held rod 1 is successively provided with a heat insulation baffle 4 and a balancing device 3. The heat insulation baffle 4 is used to block the high temperature of the pouring outlet of the sample glass to prevent the hand from being burned during operation. The balancing device 3 is a balancing rod vertically welded on one of the hand-held rods 1. When clamping, the other hand-held rod 1 moves close to the balancing rod, so that the two hand-held rods 1 remain stable during the clamping process. The hand-held rod 1, the locking device 2, the balancing device 3 and the heat insulation baffle 4 are all made of stainless steel, which ensures the strength of the clamp while not making the clamp too heavy, and is convenient to use.
[0032] Embodiment 1:
[0033] This embodiment provides a single-person holding fixture for extending the life of the liner of the sample glass casting crucible, such as Figure 1 As shown, it comprises two hand-held rods 1, which are cross-rotatably fixedly connected via a rotating shaft 5. The top of the hand-held rod 1 is connected to a circular arc transition portion 6, which is connected to a semicircular arc clamp 8 matching the curvature of the crucible liner via multiple reinforcements 7.
[0034] The contact end of the hand-held rod 1 is arranged in a plane, which improves the stability of the contact between the hand-held rods 1. The tail end of the hand-held rod 1 is provided with a locking device 2, and the hand-side end is provided with a balancing device 3 and a heat-insulating baffle 4 in sequence, which is convenient for quickly clamping and safely and smoothly removing the crucible liner from the high temperature. The use of this embodiment for glass casting can significantly increase the service life of the crucible liner.
[0035] Embodiment 2:
[0036] This embodiment provides a two-person holding fixture for extending the life of the liner of the medium sample glass casting crucible, such as Figure 2 As shown, it includes two hand-held rods 1, which are cross-rotated and fixedly connected through a rotating shaft 5. A circular arc transition portion 6 is set in the middle of the hand-held rod 1, so that both ends of the transition portion 6 are connected to the hand-held rod 1, and the contact end of the hand-held rod 1 is set in a plane, which improves the stability of the contact between the hand-held rods 1. The transition portion 6 is connected to a semi-circular arc clamp 8 with a matching arc of the crucible liner through multiple reinforcements 7.
[0037] The hand-held rods 1 at both ends of the transition part 6 are provided with a balancing device 3 and a heat insulation baffle 4, and the tail ends are provided with a locking device 2. When in use, two people each hold one end of the hand-held rod 1, and the two people can more quickly clamp and safely and smoothly remove the crucible liner from the high temperature.
[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A fixture for extending the life of a liner of a medium-sample glass casting crucible, characterized in that: It comprises two hand-held rods (1) and a clamp (8); The two hand-held rods (1) are cross-rotatably fixedly connected via a rotating shaft (5); one end of the hand-held rod (1) is connected to an arc-shaped transition portion (6); the clamp (8) is mounted on the transition portion (6); and the rotating shaft (5), the transition portion (6) and the clamp (8) are all made of ductile iron.
2. A fixture for extending the life of a liner of a medium-sample glass casting crucible according to claim 1, characterized in that: The other end of the hand-held rod (1) is provided with a locking device (2).
3. A fixture for extending the life of a liner of a medium-sample glass casting crucible according to claim 1, characterized in that: The other end of the hand-held rod (1) is a hollow regular quadrangular prism.
4. A fixture for extending the life of a liner of a medium-sample glass casting crucible according to claim 1, characterized in that: A balancing device (3) is provided on the hand-held rod (1), and a heat insulation baffle (4) is provided between the balancing device (3) and the rotating shaft (5).
5. A fixture for extending the life of a liner of a medium-sample glass casting crucible according to claim 4, characterized in that: The materials of the hand-held rod (1), the balancing device (3) and the heat-insulating baffle (4) are all stainless steel.
6. A fixture for extending the life of a liner of a medium-sample glass casting crucible according to claim 1, characterized in that: The transition part (6) is connected to the clamp (8) via a plurality of reinforcement members (7).
7. A fixture for extending the life of a liner of a medium-sample glass casting crucible according to claim 6, characterized in that: The material of the reinforcement member (7) is ductile iron.
8. A fixture for extending the life of a liner of a medium-sample glass casting crucible according to claim 1, characterized in that: The clamp (8) is an I-shaped reinforced semicircular arc surface, and the curvature of the clamp (8) matches the curvature of the crucible liner.
9. A fixture for extending the life of a liner of a medium-sample glass casting crucible according to claim 1, characterized in that: Both ends of the transition portion (6) are connected to a hand-held rod (1).
10. A fixture for extending the life of a liner of a medium-sample glass casting crucible according to claim 1, characterized in that: The contact end of the hand-held rod (1) is a plane.