Automatic furnace cover opening and closing device and graphite heating industrial furnace

Abstract

The utility model discloses a furnace lid automatic opening and closing device and graphite heating industrial furnace, including gear ring and furnace lid, the gear ring is provided with a plurality of locking tooth block along the inner circle, the lower part of locking tooth block is provided with first wedge block, the outer circle of gear ring is provided with two groups of first connecting plate, the end part of first connecting plate is rotatablely connected with the output end of cylinder, a plurality of groups of backup plates and radial positioning wheels are arranged on the upper surfaces of the locking tooth blocks; the utility model has the advantages that the problems of heat loss in the furnace, furnace gas leakage and the like caused by easy aging and damage of a sealing gasket and easy loosening of a hinge in the long-term high-temperature and frequent opening and closing process of the existing furnace cover and the furnace body in a manner that the hinge connection is matched with the sealing gasket are effectively solved; the opening and closing mode of the furnace cover is mostly manual or semi-automatic, the operation is inconvenient, the opening and closing angle of the furnace cover is difficult to accurately control, and the requirements cannot be met under the condition that the environment in the furnace needs to be accurately controlled according to different processes.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial heating equipment, in particular to an automatic opening and closing device for a furnace cover and a graphite heating industrial furnace. Background Art

[0002] In industrial production, graphite heating industrial furnaces are widely used in various high-temperature treatment processes, such as sintering of graphite materials, high-temperature smelting of metal materials, etc. For graphite heating industrial furnaces, the opening and closing operation of the furnace cover is a key link.

[0003] Traditional furnace cover opening and closing methods often have many problems. On the one hand, in terms of the connection and sealing between the furnace cover and the furnace body, many use a simple hinge connection with a sealing gasket. This connection method is prone to aging and damage of the sealing gasket during long-term high temperature and frequent opening and closing, resulting in heat loss in the furnace, furnace gas leakage and other problems, which not only affects the heating efficiency, but may also pose a threat to the production environment and the safety of operators. Moreover, the simple hinge connection is prone to loosening after repeated use, affecting the positioning accuracy of the furnace cover and thus affecting the stability of the entire heating process.

[0004] On the other hand, traditional manual or semi-automated methods for controlling the opening and closing of the furnace cover are inconvenient to operate and difficult to precisely control the opening and closing angle. This falls far short of the requirements of modern industrial production, where precise control of the furnace environment is crucial for varying processes. For example, during high-temperature processing of certain precision materials, an inaccurate furnace cover opening and closing angle can lead to uneven temperature distribution and inaccurate heating times, compromising product quality.

[0005] Furthermore, friction and wear between components of the furnace cover opening and closing mechanism are a significant issue during long-term use. Due to the high temperatures and frequent opening and closing of industrial furnaces, component wear accelerates, increasing maintenance costs and equipment downtime, while reducing production efficiency. Therefore, it was necessary to develop a new automatic furnace cover opening and closing mechanism to address these issues and improve the performance and reliability of graphite-heated industrial furnaces. Utility Model Content

[0006] The purpose of the present invention is to solve the problem that the existing furnace cover and furnace body are mostly connected by hinges with sealing gaskets. Under long-term high temperature and frequent opening and closing processes, the sealing gaskets are prone to aging and damage, and the hinges are prone to loosening, resulting in heat loss in the furnace and furnace gas leakage. In addition, the opening and closing method of the furnace cover is mostly manual or semi-automatic, which is inconvenient to operate and difficult to accurately control the opening and closing angle of the furnace cover. For situations where the furnace environment needs to be accurately controlled according to different processes, this problem cannot be met. Therefore, an automatic opening and closing device for the furnace cover and a graphite heating industrial furnace are provided.

[0007] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0008] The automatic opening and closing device of the furnace cover includes a gear ring and a furnace cover. The gear ring is provided with a plurality of locking tooth blocks at equal intervals along the inner ring. The upper surface of the lower portion of the locking tooth block is provided with a first wedge-shaped block. The outer ring of the gear ring is provided with two groups of first connecting plates. The ends of the first connecting plates are rotatably connected to the output end of the cylinder. Several groups of support plates and radial positioning wheels are provided on the upper surface of the locking tooth block.

[0009] The outer ring of the furnace cover is provided with a first flange, and the first flange is provided with several protrusions corresponding to the locking teeth at equal distances along the outer ring, and a second wedge block is provided on the lower surface of the protrusion. Several groups of fixing seats are provided on the lower surface of the furnace cover, and a groove is provided on the upper surface of the first flange, and the groove is used to install a sealing strip.

[0010] Furthermore, the inclination angle of the first wedge block and the second wedge block is between 30° and 60°, and the two are arranged opposite to each other. As the rotation angle of the gear ring increases, the protrusion can generate sufficient axial force during the process of rotating and inserting into the locking gear block, thereby ensuring a tight connection between the furnace cover and the gear ring, and when the furnace cover is opened, it can be smoothly separated under the smaller pulling force of the cylinder, thereby improving the overall performance of the device.

[0011] Furthermore, a wear-resistant coating is provided between the first wedge block and the second wedge block. The wear-resistant coating material is a ceramic-based composite material to reduce the wear of the protrusion and the locking tooth block during long-term opening and closing, extend the service life of the automatic opening and closing device of the furnace cover, reduce maintenance costs, and ensure the stability of the furnace cover when opening and closing.

[0012] Furthermore, the cylinder is an adjustable stroke cylinder, and its stroke can be precisely adjusted according to the opening and closing angle requirements of the furnace cover, so that the furnace cover can be accurately stopped within a predetermined angle range to meet different production process requirements and improve the flexibility and controllability of the graphite heating industrial furnace operation.

[0013] A graphite heating industrial furnace comprises a furnace body, wherein the upper end of the furnace body is provided with an upper top cover, and the lower end of the furnace body is provided with a furnace bottom.

[0014] Furthermore, a second flange is provided at the bottom of the furnace bottom, the gear ring is rotatably connected to the second flange, two sets of second connecting plates are provided on the outer ring of the furnace bottom, the ends of the second connecting plates are rotatably connected to the head end of the cylinder, and a plurality of axial positioning wheels are provided on the outer ring of the furnace bottom, and the outer edges of the axial positioning wheels are in contact with the upper surface of the support plate.

[0015] Furthermore, the outer edge of the radial positioning wheel abuts against the outer edge of the furnace bottom.

[0016] Furthermore, the radial positioning wheel and the axial positioning wheel are both made of a polymer material with self-lubricating function, which can reduce friction and wear during operation, reduce the heat generated by friction, improve positioning accuracy and operation stability, and at the same time reduce maintenance times and costs, thereby extending the service life of the entire device.

[0017] Beneficial effects: The utility model has the following beneficial effects:

[0018] 1. A special connection structure between the gear ring and the furnace cover (coordinated by a bump, locking gear and wedge block, etc.) is used to replace the traditional hinge connection and sealing gasket. This effectively avoids the problems of sealing gasket aging and damage and hinge loosening, reduces heat loss and furnace gas leakage in the furnace, ensures heating efficiency and production environment, and operator safety, while improving the stability and positioning accuracy of the connection between the furnace cover and the furnace body.

[0019] 2. The cylinder adopts an adjustable stroke design, which can be precisely adjusted according to the opening and closing angle requirements of the furnace cover, so that the furnace cover can stop accurately within the predetermined angle range. This precise control meets the strict requirements of different production processes for the furnace environment, avoids problems such as uneven temperature distribution and inaccurate heating time caused by inaccurate opening and closing angles, and thus improves product quality.

[0020] 3. A ceramic-based composite wear-resistant coating is provided between the first wedge block and the second wedge block. At the same time, the radial positioning wheel and the axial positioning wheel are made of a self-lubricating polymer material, which can significantly reduce the wear of the components during long-term high temperature and frequent opening and closing processes, extend the service life of the furnace cover automatic opening and closing device and the entire graphite heating industrial furnace, and reduce maintenance costs;

[0021] 4. Through specially designed connection structure, adjustable cylinder and self-lubricating positioning wheel and other measures, not only the opening and closing process of the furnace cover is made more stable, but also the heat generated by friction is reduced during operation, the positioning accuracy is improved, the operation stability of the entire device is further enhanced, the downtime of the equipment is reduced, and the production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the gear ring structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the furnace cover of the present utility model;

[0024] Figure 3 This is a schematic cross-sectional view of the gear ring of the present utility model;

[0025] Figure 4 This is a schematic diagram of the furnace cover of the present invention from another perspective;

[0026] Figure 5 This is a schematic diagram of the structure of a graphite heating industrial furnace of the present utility model;

[0027] Figure 6 This is a schematic diagram of the furnace bottom structure of the present utility model.

[0028] In the figure: 10-gear ring, 20-furnace cover, 30-cylinder, 40-furnace body, 50-upper cover, 60-furnace bottom;

[0029] Locking tooth block, 102-first wedge block, 103-first connecting plate, 104-back plate, 105-radial positioning wheel, 201-first flange, 202-protrusion, 203-second wedge block, 204-fixing seat, 205-groove, 601-second flange, 602-second connecting plate, 603-axial positioning wheel. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Combine Figures 1 to 6 The automatic opening and closing device of the furnace cover shown includes a gear ring 10 and a furnace cover 20. The gear ring 10 is provided with a plurality of locking tooth blocks 101 at equal distances along the inner ring, so that the furnace cover 20 is evenly loaded when connected to the gear ring 10, thereby ensuring the stability of the connection. This uniform force structure can effectively avoid damage to components caused by excessive local force, thereby improving the reliability of the entire device. A first wedge block 102 is provided on the upper surface of the lower part of the locking tooth block 101, and two groups of first connecting plates 103 are provided on the outer ring of the gear ring 10. The end of the first connecting plate 103 is rotatably connected to the output end of the cylinder 30, cleverly converting the linear motion of the cylinder into the rotational motion of the gear ring 10. This rotational connection can adapt to different working angles and force conditions, reduce the stress concentration problem caused by improper connection mode, and improve the service life of the components. A plurality of groups of support plates 104 and radial positioning wheels 105 are provided on the upper surface of the locking tooth block 101;

[0032] The outer ring of the furnace cover 20 is provided with a first flange 201, and the first flange 201 is equidistantly provided with a number of protrusions 202 corresponding to the locking gear blocks 101 along the outer ring. The equidistantly distributed protrusions 202 ensure that when the furnace cover 20 is connected to the gear ring 10, each connection point is subjected to uniform force, thereby making the entire connection more firm and stable. A second wedge block 203 is provided on the lower surface of the protrusion 202, and a number of groups of fixing seats 204 are provided on the lower surface of the furnace cover 20. A groove 205 is provided on the upper surface of the first flange 201, and the groove 205 is used to install a sealing strip.

[0033] The inclination angle of the first wedge block 102 and the second wedge block 203 is between 30° and 60°, and the two are arranged opposite to each other. As the rotation angle of the ring gear 10 increases, the first wedge block 102 and the second wedge block 203 contact and squeeze each other. During the process of the protrusion 202 rotating and inserting into the locking gear block 101, sufficient axial force can be generated to ensure a tight connection between the furnace cover 20 and the ring gear 10, and when the furnace cover 20 is opened, it can be smoothly separated under a smaller pulling force of the cylinder 30, thereby improving the overall performance of the device.

[0034] A wear-resistant coating is provided between the first wedge block 102 and the second wedge block 203. The wear-resistant coating material is a ceramic-based composite material to reduce the wear of the protrusion 202 and the locking tooth block 101 during long-term opening and closing, extend the service life of the automatic opening and closing device of the furnace cover, reduce maintenance costs, and ensure the stability of the furnace cover 20 when opening and closing.

[0035] The cylinder 30 is an adjustable stroke cylinder, and its stroke can be precisely adjusted according to the opening and closing angle requirements of the furnace cover 20, so that the furnace cover 20 can stop accurately within a predetermined angle range to meet different production process requirements and improve the flexibility and controllability of the graphite heating industrial furnace operation.

[0036] The graphite heating industrial furnace comprises a furnace body 40 , an upper cover 50 is provided at the upper end of the furnace body 40 , and a furnace bottom 60 is provided at the lower end of the furnace body 40 .

[0037] A second flange 601 is provided at the bottom of the furnace bottom 60, and the ring gear 10 is rotatably connected to the second flange 601. Two sets of second connecting plates 602 are provided on the outer ring of the furnace bottom 60. The ends of the second connecting plates 602 are rotatably connected to the head end of the cylinder 30. A plurality of axial positioning wheels 603 are provided on the outer ring of the furnace bottom 60. The outer edges of the axial positioning wheels 603 abut against the upper surface of the support plate 104. This design can effectively limit the displacement of the ring gear 10 in the axial direction.

[0038] The outer edge of the radial positioning wheel 105 abuts against the outer edge of the furnace bottom 60. The setting of the radial positioning wheel 105 further optimizes the movement performance of the ring gear 10. The radial positioning wheel 105 cooperates with the furnace bottom and other related components to ensure that the radial position of the ring gear 10 is stable during rotation. This not only improves the opening and closing accuracy of the furnace cover 20, but also reduces the friction and wear caused by radial displacement, thereby extending the service life of the entire device.

[0039] The radial positioning wheel 105 and the axial positioning wheel 603 are both made of a self-lubricating polymer material, which can reduce friction and wear during operation, reduce the heat generated by friction, improve positioning accuracy and operational stability, and reduce maintenance times and costs, thereby extending the service life of the entire device.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0041] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. Automatic opening and closing device of furnace cover, characterized by: The invention comprises a gear ring (10) and a furnace cover (20), wherein the gear ring (10) is provided with a plurality of locking tooth blocks (101) equidistantly along the inner ring, a first wedge block (102) is provided on the upper surface of the lower portion of the locking tooth block (101), and the outer ring of the gear ring (10) is provided with two groups of first connecting plates (103), the ends of the first connecting plates (103) are rotatably connected to the output end of the cylinder (30), and a plurality of groups of support plates (104) and a radial positioning wheel (105) are provided on the upper surface of the locking tooth block (101); The outer ring of the furnace cover (20) is provided with a first flange (201), and the first flange (201) is provided with a plurality of protrusions (202) corresponding to the locking tooth blocks (101) at equal intervals along the outer ring, and a second wedge block (203) is provided on the lower surface of the protrusion (202). The lower surface of the furnace cover (20) is provided with a plurality of groups of fixing seats (204), and the upper surface of the first flange (201) is provided with a groove (205), and the groove (205) is used to install a sealing strip.

2. The automatic opening and closing device for the furnace cover according to claim 1, characterized in that: The inclination angle of the first wedge block (102) and the second wedge block (203) is between 30° and 60°, and the two are arranged opposite to each other. As the rotation angle of the ring gear (10) increases, the protrusion (202) can generate sufficient axial force during the process of rotating and inserting into the locking tooth block (101), thereby ensuring a tight connection between the furnace cover (20) and the ring gear (10), and when the furnace cover (20) is opened, it can be smoothly separated under the pulling force of the cylinder (30), thereby improving the overall performance of the device.

3. The automatic opening and closing device for the furnace cover according to claim 2, characterized in that: A wear-resistant coating is provided between the first wedge block (102) and the second wedge block (203), and the wear-resistant coating material is a ceramic-based composite material, so as to reduce the wear of the protrusion (202) and the locking tooth block (101) during the long-term opening and closing process, extend the service life of the automatic opening and closing device of the furnace cover, reduce maintenance costs, and ensure the stability of the furnace cover (20) when opening and closing.

4. The automatic opening and closing device for a furnace cover according to claim 1, characterized in that: The cylinder (30) is an adjustable stroke cylinder, and its stroke can be precisely adjusted according to the opening and closing angle requirements of the furnace cover (20), so that the furnace cover (20) can be accurately stopped within a predetermined angle range to meet different production process requirements and improve the controllability of the graphite heating industrial furnace operation.

5. Graphite heating industrial furnace, characterized by: The automatic furnace cover opening and closing device according to claim 1 comprises a furnace body (40), an upper cover (50) is provided at the upper end of the furnace body (40), and a furnace bottom (60) is provided at the lower end of the furnace body (40).

6. The graphite heating industrial furnace according to claim 5, characterized in that: A second flange (601) is provided at the bottom of the furnace bottom (60), and the gear ring (10) is rotatably connected to the second flange (601). Two sets of second connecting plates (602) are provided on the outer ring of the furnace bottom (60), and the ends of the second connecting plates (602) are rotatably connected to the head end of the cylinder (30). A plurality of axial positioning wheels (603) are provided on the outer ring of the furnace bottom (60), and the outer edges of the axial positioning wheels (603) are in contact with the upper surface of the support plate (104).

7. The graphite heating industrial furnace according to claim 6, characterized in that: The outer edge of the radial positioning wheel (105) abuts against the outer edge of the furnace bottom (60).

8. The graphite heating industrial furnace according to claim 7, characterized in that: The radial positioning wheel (105) and the axial positioning wheel (603) are both made of a high polymer material with self-lubricating function, which can reduce friction and wear during operation, reduce the heat generated by friction, improve positioning accuracy and operation stability, and reduce maintenance times and costs, thereby extending the service life of the entire device.

Images