Multi-temperature-zone synergistic heating crystallization furnace

Abstract

The utility model discloses a multi-temperature-zone synergistic heating crystallization furnace, which belongs to the technical field of heating furnaces and comprises a base, a heating furnace body is arranged on the base, a sampling port is arranged on one side of the heating furnace body, and an end cover is detachably connected onto the sampling port; the sample placing assembly comprises a bottom support fixedly connected to the end cover, the bottom support is located at the end, facing the inner cavity of the heating furnace body, of the end cover, a groove is formed in the top surface of the bottom support, a porcelain boat is placed in the groove, and the inner wall of the groove is in sliding contact with the outer wall of the porcelain boat; clamping lugs are fixedly connected to the middles of the two opposite side walls of the porcelain boat respectively, the bottom support is located between the two clamping lugs, and the clamping lugs are in sliding contact with the outer side wall of the bottom support; and the push-and-pull assembly is arranged on the base, and the push-and-pull assembly is connected with the end cover. According to the utility model, the heating furnace body is synchronously closed / opened and the porcelain boat extends in / out through the push-and-pull assembly, so that the convenience of taking and placing samples is improved, the clamping balance can be improved through the clamping lugs, and the overturning risk of the porcelain boat is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heating furnaces, in particular to a multi-temperature zone coordinated heating crystallization furnace. Background Art

[0002] Due to the high internal energy of glass, the crystals are in a metastable state. Under certain conditions, there is a tendency for spontaneous precipitation of crystals. This phenomenon of crystal formation is called crystallization. Measuring the crystallization performance of glass means measuring the crystallization temperature range, upper and lower limits of the glass, and the degree of crystallization of the glass within this temperature range.

[0003] The multi-temperature zone coordinated heating crystallization furnace is a furnace used to test the crystallization performance of glass. During the test, the sample is processed into fragments, loaded into a porcelain boat, and placed in a furnace with multiple temperature zones (temperature gradient). The temperature is kept warm for a sufficient time to allow the glass phase and the crystal phase to reach thermal equilibrium. The porcelain boat is then removed and the sample is rapidly cooled. The degree and position of crystallization are determined using a polarizing microscope to determine the upper and lower temperature limits of crystallization. Conventional crystallization furnaces require the furnace door to be opened manually, and the porcelain boat must be clamped when it is placed and removed. However, the temperature in the furnace is relatively high during the sample removal process, which increases the difficulty of sampling. The clamp is also prone to unbalanced clamping, which can cause the porcelain boat to overturn due to unstable clamping.

[0004] Therefore, a multi-temperature zone collaborative heating crystallization furnace is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a multi-temperature zone cooperative heating crystallization furnace, aiming to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following solutions: The present invention provides a multi-temperature zone coordinated heating crystallization furnace, comprising:

[0007] A base, wherein a heating furnace body is provided on the base, a sampling port is provided on one side of the heating furnace body, and an end cover is detachably connected to the sampling port;

[0008] A sample placement assembly, comprising a base fixedly connected to the end cover, the base being located at one end of the end cover facing the inner cavity of the heating furnace body, a groove being provided on the top surface of the base, a porcelain boat being placed in the groove, the inner wall of the groove being in sliding contact with the outer wall of the porcelain boat, and the porcelain boat being used to place the sample; clamping ears being fixedly connected to the middle portions of the two opposite side walls of the porcelain boat, respectively, the base being located between the two clamping ears, the clamping ears being in sliding contact with the outer side wall of the base;

[0009] A push-pull assembly is provided on the base and is connected to the end cover, and is used to drive the end cover to open or close the sampling port.

[0010] Preferably, the push-pull assembly includes two hydraulic cylinders fixedly connected to the side walls of the base, the two hydraulic cylinders are respectively located at two ends of the heating furnace body, and the piston rods of the hydraulic cylinders are fixedly connected to the end covers.

[0011] Preferably, the heating furnace body is divided into three layers, which are a furnace lining layer, a heat-insulating layer and a protective layer from the inside to the outside, and a heating element is provided on the outer wall of the furnace lining layer.

[0012] Preferably, the heating element is a spiral resistance wire, which is fixedly embedded between the furnace lining layer and the insulation layer, and the pitch of the resistance wire gradually decreases from one end to the other end.

[0013] Preferably, the furnace lining layer, the thermal insulation layer and the protective layer have an upper half and a lower half respectively, and the upper half of the furnace lining layer, the thermal insulation layer and the protective layer are in close contact with the lower half of the furnace lining layer, the thermal insulation layer and the protective layer respectively.

[0014] Preferably, a top cover is rotatably connected to the base, and a positioning assembly detachably connected to the top cover is provided on the base. Embedding grooves are respectively provided on the side walls opposite to the base and the top cover, and the embedding grooves on the base are fixedly connected to the outer wall of the lower half of the protective layer, and the embedding grooves on the top cover are fixedly connected to the outer wall of the upper half of the protective layer.

[0015] Preferably, the positioning assembly includes a plurality of first sleeves rotatably connected to the base, a second sleeve is slidably connected inside the first sleeve, a spring is fixed between the inner wall of the first sleeve and the inner wall of the second sleeve, the second sleeve extends out of the first sleeve and is fixed to a positioning column, a plurality of first positioning holes are opened on one side of the top cover, a plurality of second positioning holes are opened on the base, and the positioning column passes through the first positioning hole and extends into the second positioning hole.

[0016] Preferably, the clamping ear is used to cooperate with a clamp, and the clamp includes two clamping plates, the tops of the two clamping plates are fixedly connected, and the opposite inner walls of the two clamping plates are in sliding contact with the outer walls of the two clamping ears respectively, and a limiting groove is provided in the middle of the bottom of the clamping ear, and a limiting block is fixed to the bottom of the clamping plate, and the two limiting blocks are located between the two clamping plates, and the limiting block is in sliding contact with the limiting groove.

[0017] The utility model discloses the following technical effects: by driving the end cover towards or away from the sampling port through the push-pull assembly, not only can the heating furnace body be closed or opened, but the porcelain boat on the end cover can also be synchronously driven to enter or extend out of the inner cavity of the heating furnace body, thereby realizing the placement and removal of samples on the porcelain boat, and improving the convenience of operation; and after the porcelain boat is taken out of the heating furnace body by the push-pull assembly, the operator can directly use pliers to clamp the two clamping ears, and the clamping ears are located in the middle of the two side walls of the porcelain boat, thereby improving the balance of clamping and reducing the risk of overturning the porcelain boat. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the utility model after the top cover and end covers are opened;

[0021] Figure 3 This is an exploded view of the heating furnace body in the present invention;

[0022] Figure 4 This is an exploded view of the positioning component in the present utility model;

[0023] Figure 5 This is a structural diagram of the porcelain boat and the clamp in the utility model.

[0024] In the figure: 1. Base; 2. Heating furnace body; 3. End cover; 4. Bottom support; 5. Groove; 6. Porcelain boat; 7. Clamping ear; 8. Hydraulic cylinder; 9. Furnace lining; 10. Insulation layer; 11. Protective layer; 12. Resistance wire; 13. Top cover; 14. Embedded groove; 15. First sleeve; 16. Second sleeve; 17. Spring; 18. Positioning column; 19. First positioning hole; 20. Second positioning hole; 21. Clamping plate; 22. Limiting groove; 23. Limiting block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0027] Reference Figure 1-Figure 5 The utility model provides a multi-temperature zone cooperative heating crystallization furnace, comprising:

[0028] A base 1 is provided with a heating furnace body 2, a sampling port is provided on one side of the heating furnace body 2, and an end cover 3 is detachably connected to the sampling port;

[0029] The sample placement assembly includes a base 4 fixed to the end cover 3. The base 4 is located at the end of the end cover 3 facing the inner cavity of the heating furnace body 2. A groove 5 is formed on the top surface of the base 4. A porcelain boat 6 is placed in the groove 5. The inner wall of the groove 5 is in sliding contact with the outer wall of the porcelain boat 6. The porcelain boat 6 is used to place the sample. The middle of the two opposite side walls of the porcelain boat 6 are respectively fixed with clamping ears 7. The base 4 is located between the two clamping ears 7. The clamping ears 7 are in sliding contact with the outer wall of the base 4.

[0030] A push-pull assembly is provided on the base 1 and is connected to the end cover 3 to drive the end cover 3 to open or close the sampling port;

[0031] The porcelain boat 6 is a chemical porcelain, also known as a combustion boat or combustion boat, which has excellent chemical corrosion resistance and thermal shock resistance, as well as high mechanical strength, and is often used in various experiments (the specific ones are prior art and will not be described in detail here);

[0032] By driving the end cover 3 towards or away from the sampling port through the push-pull assembly, not only can the heating furnace body 2 be closed or opened, but the porcelain boat 6 on the end cover 3 can also be simultaneously driven into or extended out of the inner cavity of the heating furnace body 2, thereby realizing the placement and removal of the sample on the porcelain boat 6, and improving the convenience of operation; and after the porcelain boat 6 is removed from the heating furnace body 2 by the push-pull assembly, the operator can directly use pliers to clamp the two clamping ears 7, and the clamping ears 7 are located in the middle position of the two side walls of the porcelain boat 6, thereby improving the balance of clamping and reducing the risk of overturning of the porcelain boat 6.

[0033] To further optimize the solution, the push-pull assembly includes two hydraulic cylinders 8 fixed to the side walls of the base 1 , the two hydraulic cylinders 8 are respectively located at the two ends of the heating furnace body 2 , and the piston rods of the hydraulic cylinders 8 are fixed to the end cover 3 .

[0034] Further optimization scheme, the heating furnace body 2 is divided into three layers, from the inside to the outside, respectively, the furnace lining layer 9, the insulation layer 10 and the protective layer 11, and the outer wall of the furnace lining layer 9 is provided with a heating element;

[0035] The furnace lining layer 9 is made of a high temperature resistant and corrosion resistant material, preferably a corundum-mullite material; the protective layer 11 is made of a silicon carbide material.

[0036] Further optimized solution, the heating element is a spiral resistance wire 12, the resistance wire 12 is fixedly embedded between the furnace lining layer 9 and the insulation layer 10, and the pitch of the resistance wire 12 gradually decreases from one end to the other end;

[0037] Heating is achieved through the resistance wire 12, and a temperature gradient can be created in the furnace cavity by gradually reducing the pitch, realizing multi-temperature zone heating. By precisely controlling the temperature gradient, appropriate temperature conditions can be formed inside the glass to promote the formation and growth of crystal nuclei.

[0038] Further optimization scheme, the furnace lining layer 9, the thermal insulation layer 10 and the protective layer 11 respectively have an upper half and a lower half, and the upper half of the furnace lining layer 9, the thermal insulation layer 10 and the protective layer 11 are in close contact with the lower half of the furnace lining layer 9, the thermal insulation layer 10 and the protective layer 11 respectively.

[0039] In a further optimized solution, a top cover 13 is rotatably connected to the base 1, a positioning assembly detachably connected to the top cover 13 is provided on the base 1, and an embedding groove 14 is respectively provided on the side walls opposite to the top cover 13. The embedding groove 14 on the base 1 is fixedly connected to the outer wall of the lower half of the protective layer 11, and the embedding groove 14 on the top cover 13 is fixedly connected to the outer wall of the upper half of the protective layer 11;

[0040] The top cover 13 is rotated and fixed by the positioning assembly. At this time, the upper parts of the furnace lining layer 9, the thermal insulation layer 10 and the protective layer 11 are in close contact with the lower parts of the furnace lining layer 9, the thermal insulation layer 10 and the protective layer 11 and are closed.

[0041] Further optimized, the positioning assembly includes a plurality of first sleeves 15 rotatably connected to the base 1, a second sleeve 16 is slidably connected inside the first sleeve 15, a spring 17 is fixed between the inner wall of the first sleeve 15 and the inner wall of the second sleeve 16, the second sleeve 16 extends out of the first sleeve 15 and is fixed to a positioning column 18, a plurality of first positioning holes 19 are opened on one side of the top cover 13, a plurality of second positioning holes 20 are opened on the base 1, and the positioning column 18 passes through the first positioning holes 19 and extends into the second positioning holes 20;

[0042] An anti-slip groove is provided on the inner wall of the first sleeve 15, and an anti-slip block is fixed on the outer wall of the second sleeve 16. The anti-slip block is slidably connected to the anti-slip groove. When the top cover 13 is fixed, the second sleeve 16 is stretched and rotated to align the positioning column 18 with the first positioning hole 19. The second sleeve 16 is loosened, and under the action of the spring 17, the positioning column 18 is inserted into the first positioning hole 19 and the second positioning hole 20.

[0043] Further optimized, the clamping ear 7 is used to cooperate with the clamp, the clamp includes two clamping plates 21, the tops of the two clamping plates 21 are fixedly connected, the opposite inner side walls of the two clamping plates 21 are in sliding contact with the outer side walls of the two clamping ears 7 respectively, a limiting groove 22 is provided in the middle of the bottom of the clamping ear 7, the bottom of the clamping plate 21 is fixedly connected to a limiting block 23, the two limiting blocks 23 are located between the two clamping plates 21, and the limiting block 23 is in sliding contact with the limiting groove 22;

[0044] When clamping the porcelain boat 6, the clamping plate 21 moves along the outer wall of the clamping ear 7. When it moves to the limit groove 22, the clamping plate 21 is lifted upward, and the limit block 23 slides into the limit groove 22. At this time, it can be lifted directly to take out the porcelain boat 6.

[0045] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0046] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A multi-temperature zone collaborative heating crystallization furnace, characterized in that: include: A base (1), wherein a heating furnace body (2) is provided on the base (1), a sampling port is provided on one side of the heating furnace body (2), and an end cover (3) is detachably connected to the sampling port; A sample placement assembly, the sample placement assembly includes a base (4) fixedly connected to the end cover (3), the base (4) is located at one end of the end cover (3) facing the inner cavity of the heating furnace body (2), a groove (5) is provided on the top surface of the base (4), a porcelain boat (6) is placed in the groove (5), the inner wall of the groove (5) is in sliding contact with the outer wall of the porcelain boat (6), and the porcelain boat (6) is used to place the sample; the middle parts of the two opposite side walls of the porcelain boat (6) are respectively fixed with clamping ears (7), the base (4) is located between the two clamping ears (7), and the clamping ears (7) are in sliding contact with the outer side wall of the base (4); A push-pull assembly is provided on the base (1), and the push-pull assembly is connected to the end cover (3) and is used to drive the end cover (3) to open or close the sampling port.

2. The multi-temperature zone cooperative heating crystallization furnace according to claim 1, characterized in that: The push-pull assembly comprises two hydraulic cylinders (8) fixedly connected to the side walls of the base (1), the two hydraulic cylinders (8) are respectively located at the two ends of the heating furnace body (2), and the piston rods of the hydraulic cylinders (8) are fixedly connected to the end cover (3).

3. The multi-temperature zone cooperative heating crystallization furnace according to claim 1, characterized in that: The heating furnace body (2) is divided into three layers, which are a furnace lining layer (9), a heat-insulating layer (10) and a protective layer (11) from the inside to the outside. A heating element is provided on the outer wall of the furnace lining layer (9).

4. The multi-temperature zone cooperative heating crystallization furnace according to claim 3, characterized in that: The heating element is a spiral resistance wire (12), which is fixedly embedded between the furnace lining layer (9) and the insulation layer (10), and the pitch of the resistance wire (12) gradually decreases from one end to the other end.

5. The multi-temperature zone cooperative heating crystallization furnace according to claim 4, characterized in that: The furnace lining layer (9), the thermal insulation layer (10) and the protective layer (11) respectively have an upper half and a lower half, and the upper half of the furnace lining layer (9), the thermal insulation layer (10) and the protective layer (11) are in close contact with the lower half of the furnace lining layer (9), the thermal insulation layer (10) and the protective layer (11).

6. The multi-temperature zone cooperative heating crystallization furnace according to claim 4, characterized in that: The base (1) is rotatably connected to a top cover (13), and the base (1) is provided with a positioning assembly detachably connected to the top cover (13). The side walls of the base (1) and the top cover (13) opposite to each other are respectively provided with embedding grooves (14). The embedding grooves (14) on the base (1) are fixedly connected to the outer wall of the lower half of the protective layer (11), and the embedding grooves (14) on the top cover (13) are fixedly connected to the outer wall of the upper half of the protective layer (11).

7. The multi-temperature zone coordinated heating crystallization furnace according to claim 6, characterized in that: The positioning assembly includes a plurality of first sleeves (15) rotatably connected to the base (1), a second sleeve (16) is slidably connected inside the first sleeve (15), a spring (17) is fixed between the inner wall of the first sleeve (15) and the inner wall of the second sleeve (16), the second sleeve (16) extends out of the first sleeve (15) and is fixed to a positioning column (18), a plurality of first positioning holes (19) are opened on one side of the top cover (13), a plurality of second positioning holes (20) are opened on the base (1), and the positioning column (18) passes through the first positioning hole (19) and extends into the second positioning hole (20).

8. The multi-temperature zone coordinated heating crystallization furnace according to claim 1, characterized in that: The clamping ear (7) is used to cooperate with the clamp, and the clamp includes two clamping plates (21), the tops of the two clamping plates (21) are fixedly connected, and the inner side walls of the two clamping plates (21) are in sliding contact with the outer side walls of the two clamping ears (7) respectively. A limiting groove (22) is provided in the middle of the bottom of the clamping ear (7), and a limiting block (23) is fixedly connected to the bottom of the clamping plate (21). The two limiting blocks (23) are located between the two clamping plates (21), and the limiting block (23) is in sliding contact with the limiting groove (22).

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