Reduction furnace chassis electrode sealing assembly with better sealing performance

Abstract

The utility model relates to the technical field of equipment sealing performance improvement, aims to solve the problems of poor sealing performance, frequent material leakage, large benefit loss and poor product reliability in the prior art, and provides a reduction furnace chassis electrode sealing assembly which is more sealed. The electrode comprises an electrode, a chassis, an electrode body, an insulating base, a flat gasket, a ceramic pressing ring, a flat washer, a first pressing ring, a spring washer, a second pressing ring, a locking flange and a plurality of locking bolts, the insulating base is meshed with the flat gasket, and a first O-shaped sealing ring and a second O-shaped sealing ring are clamped at the meshed joint; the thickness of the flat washer is 4mm; the first pressing ring, the spring washer and the second pressing ring are sequentially arranged at the end, away from the flat gasket, of the insulating base, the electrode body is sleeved with the locking flange, and the multiple locking bolts penetrate through the locking flange and abut against the second pressing ring. The utility model has the beneficial effects that the sealing performance is good, materials are not easy to leak, the production benefit is large, and the product reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment sealing improvement, in particular to a more sealed reduction furnace bottom plate electrode sealing component. Background Art

[0002] The materials in the reduction furnace of the reduction area are flammable and explosive, so the performance of the sealing component is of great significance to the safe and stable operation of the equipment. At present, the sealing of the reduction furnace chassis electrode is poor, the material leaks frequently, the benefit loss is large and the product reliability is poor. Utility Model Content

[0003] The utility model aims to provide a more sealed reduction furnace bottom plate electrode sealing assembly to solve the problems of poor sealing, frequent material leakage, large benefit loss and poor product reliability in the prior art.

[0004] The embodiment of the utility model is achieved as follows:

[0005] The embodiment of the utility model provides a more sealed reduction furnace bottom plate electrode sealing assembly, which includes an electrode and a bottom plate;

[0006] The chassis is sleeved on the electrode, the electrode body is sleeved on the outer wall of the electrode, the outer wall of the electrode body is sleeved with an insulating base and a flat gasket, the flat gasket is located at one end of the electrode and adheres to the electrode body, and the insulating base is located at the other end of the electrode and adheres to the electrode body;

[0007] One end of the insulating base close to the flat gasket is meshed with the flat gasket, and a first O-type sealing ring and a second O-type sealing ring are clamped at the meshing connection between the insulating base and the flat gasket;

[0008] One end of the flat gasket away from the insulating base passes through the chassis, and a ceramic pressure ring is sleeved on the outer wall of the flat gasket passing through the chassis, and an annular flat gasket is sandwiched between the ceramic pressure ring and the chassis, and the thickness of the flat gasket is 4 mm;

[0009] The end of the insulating base away from the flat gasket is provided with a first clamping ring, a spring washer, a second clamping ring, a locking flange and a plurality of locking bolts in sequence. The first clamping ring, spring washer, second clamping ring and locking flange are sleeved on the electrode body, and the plurality of locking bolts pass through the locking flange and abut against the second clamping ring.

[0010] During installation, the electrode body is sleeved on the electrode, and the electrode body is passed through the chassis. The insulating base and the flat gasket are butted against each other and sleeved on the outer wall of the electrode body. The first O-ring and the second O-ring are installed at the connection between the insulating base and the flat gasket. The ceramic pressure ring is sleeved on the outer wall of the electrode body and presses the flat gasket against the chassis. The first clamping ring is fitted to the insulating base, and the spring washer is clamped between the first clamping ring and the second clamping ring. One end of the spring washer close to the second clamping ring passes through the second clamping ring and presses against the locking flange. Finally, a plurality of the locking bolts are threadedly connected to the locking flange and press against the second clamping ring.

[0011] The present embodiment discloses a more sealed reduction furnace chassis electrode sealing assembly, which increases the compression amount by adjusting the thickness of the flat gasket; changes the lower end height of the insulating base, thereby increasing the compression amount of the first O-ring and the second O-ring; processes the locking flange from a flat surface to a conical surface, and reserves a boss in the middle, thereby realizing automatic centering of the spring gasket; replaces the material of the spring gasket, effectively increasing the strength of the spring gasket, thereby making a more sealed reduction furnace chassis electrode sealing assembly have the beneficial effects of good sealing, low material leakage, high production efficiency and high product reliability.

[0012] Optionally: the flat gasket has an annular first tooth at one end close to the insulating base, the first tooth is attached to the electrode body, the insulating base has an annular second tooth at one end close to the flat gasket, the second tooth is attached to the outer wall of the first tooth, the first O-type sealing ring is located at the top of the first tooth, and the second O-type sealing ring is located at the top of the second tooth;

[0013] The second tooth height is less than 3 mm of the first tooth height.

[0014] With such arrangement, since the current compression amount of the O-ring is only 1 mm, the improvement can increase the compression amount of the first O-ring and the second O-ring, thereby enhancing the sealing performance.

[0015] Optionally: an annular conical groove is provided on one side of the locking flange close to the second clamping ring, a first boss is provided in the middle of the conical groove, and an outer diameter of the first boss is smaller than an inner diameter of the spring washer.

[0016] With such arrangement, when tightening, the arrangement of the conical groove enables the spring washer to automatically adjust and center, thereby effectively preventing the spring washer from being displaced when being compressed.

[0017] Optionally: the spring washer is made of martensitic stainless steel.

[0018] With such configuration, the mechanical performance parameters of martensitic stainless steel are specifically as follows: tensile strength ≥ 850Mpa, yield strength ≥ 700Mpa, elongation ≥ 14%, and hardness HRC between 20 and 60. Therefore, it is most appropriate to select martensitic stainless steel as the material of the spring washer, which can effectively extend the service life of the spring washer.

[0019] Optionally: the first clamping ring has a conical body on one side close to the second clamping ring, and the large end of the conical body is integrally formed with the first clamping ring on one side close to the second clamping ring;

[0020] One end of the conical body close to the second clamping ring is provided with a second boss, one end of the spring washer is sleeved on the second boss, and the other end of the spring washer penetrates the second clamping ring and abuts against the conical groove.

[0021] Such an arrangement effectively prevents the spring washer from deviating from the electrode center under the action of friction during the tightening process, thereby causing inconsistent clamping force on the circumference. In addition, the size of the second boss can just pass through the spring washer, so that the spring washer is firmly pressed on the electrode center, making the clamping force on the circumference uniform.

[0022] Optionally: the ceramic pressure ring has an annular inner groove on one side close to the chassis, and the flat washer is located in the groove of the annular inner groove.

[0023] In this way, the setting of the annular inner groove can limit the position of the above-mentioned flat gasket, avoid the above-mentioned flat gasket from being located, thereby ensuring that the above-mentioned flat gasket can be tightly clamped between the above-mentioned ceramic pressure ring and the above-mentioned chassis, and effectively preventing the material from leaking downward along the mounting hole of the electrode.

[0024] Optionally: the flat gasket is a high-purity graphite gasket.

[0025] In this configuration, since high-purity graphite gaskets have good corrosion resistance, high / low temperature resistance, good compression resilience and high strength, it is most appropriate to use high-purity graphite gaskets for the above-mentioned flat gaskets, which can make the assembly more sealed.

[0026] Optionally, the outer diameter of the electrode body is adapted to the inner diameter of the spring washer.

[0027] With such arrangement, when the locking flange is tightened, the spring pad will not deviate under the action of friction, and the pressing force on the circumferences of the flat washer, the first O-ring and the second O-ring can also be consistent.

[0028] Optionally: the outer sleeve of the ceramic pressure ring is provided with an insulating sleeve, and the insulating sleeve is attached to the chassis and the electrode body.

[0029] With such arrangement, the insulating sleeve can effectively protect the ceramic pressure ring and also has a sealing effect.

[0030] Optionally: several of the above-mentioned locking bolts all have a nut, and the side of the nut close to the above-mentioned locking flange has a screw rod, and the above-mentioned screw rod passes through the above-mentioned locking flange along the axial thread of the above-mentioned locking flange and abuts against the above-mentioned second clamping ring.

[0031] In this arrangement, by rotating the nut clockwise, the screw rotates clockwise and pushes the second clamping ring and the spring washer, thereby applying pressure to the first clamping ring and the insulating base, so that the compression amount of the flat washer, the first O-ring and the second O-ring is met.

[0032] In summary of the above description, the more sealed reduction furnace chassis electrode sealing assembly disclosed by the utility model has the beneficial effects of good sealing, low material leakage, high production efficiency and high product reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] 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.

[0034] Figure 1 It is a structural schematic diagram of a more sealed reduction furnace bottom plate electrode sealing assembly in an embodiment of the utility model;

[0035] Figure 2 In the embodiment of the utility model Figure 1 A structural schematic diagram of a partial enlarged view A;

[0036] Figure 3 A top view of a locking flange in an embodiment of the utility model;

[0037] Figure 4 It is a cross-sectional view of the locking flange in the embodiment of the utility model.

[0038] Icon: 1-electrode, 2-chassis, 3-electrode body, 4-insulating base, 5-flat gasket, 6-first O-ring, 7-second O-ring, 8-ceramic pressure ring, 9-flat gasket, 10-first clamping ring, 11-spring washer, 12-second clamping ring, 13-locking flange, 14-locking bolt, 15-first tooth, 16-second tooth, 17-conical groove, 18-first boss, 19-conical body, 20-second boss, 21-insulating sleeve, 22-nut, 23-screw. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] Example

[0042] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , this embodiment provides a more sealed reduction furnace bottom plate electrode sealing assembly, including an electrode 1 and a bottom plate 2;

[0043] The chassis 2 is sleeved on the electrode 1, the electrode 1 body is sleeved on the outer wall of the electrode 1, the insulating base 4 and the flat gasket 5 are sleeved on the outer wall of the electrode 1 body, the flat gasket 5 is located at one end of the electrode 1 and fits the electrode 1 body, and the insulating base 4 is located at the other end of the electrode 1 and fits the electrode 1 body;

[0044] One end of the insulating base 4 close to the flat gasket 5 is meshed with the flat gasket 5, and a first O-type sealing ring 6 and a second O-type sealing ring 7 are clamped at the meshing connection between the insulating base 4 and the flat gasket 5;

[0045] One end of the flat gasket 5 away from the insulating base 4 passes through the chassis 2, and a ceramic pressure ring 8 is sleeved on the outer wall of the flat gasket 5 passing through the chassis 2. An annular flat gasket 9 is sandwiched between the ceramic pressure ring 8 and the chassis 2. The thickness of the flat gasket 9 is 4 mm.

[0046] The end of the insulating base 4 away from the flat gasket 5 is provided with a first clamping ring 10, a spring washer 11, a second clamping ring 12, a locking flange 13 and a plurality of locking bolts 14 in sequence. The first clamping ring 10, the spring washer 11, the second clamping ring 12, and the locking flange 13 are sleeved on the electrode 1 body, and the plurality of locking bolts 14 all penetrate the locking flange 13 and abut against the second clamping ring 12.

[0047] During installation, the electrode 1 body is sleeved on the electrode 1, and the electrode 1 body is passed through the chassis 2. The insulating base 4 and the flat gasket 5 are connected to each other and sleeved on the outer wall of the electrode 1 body. The first O-ring 6 and the second O-ring 7 are installed at the connection between the insulating base 4 and the flat gasket 5. The ceramic pressure ring 8 is sleeved on the outer wall of the electrode 1 body and presses the flat gasket 9 against the chassis 2. The first clamping ring 10 is attached to the insulating base 4, and the spring washer 11 is clamped between the first clamping ring 10 and the second clamping ring 12. The end of the spring washer 11 close to the second clamping ring 12 passes through the second clamping ring 12 and presses against the locking flange 13. Finally, a plurality of locking bolts 14 are threadedly connected to the locking flange 13 and press against the second clamping ring 12.

[0048] The present embodiment discloses a more sealed reduction furnace chassis 2 electrode 1 sealing assembly, which increases the compression amount by adjusting the thickness of the flat gasket 9; changes the lower end height of the insulating base 4, thereby increasing the compression amount of the first O-ring 6 and the second O-ring 7; processes the locking flange 13 from a flat surface to a conical surface, and reserves a boss in the middle, thereby realizing automatic centering of the spring gasket 11; and replaces the material of the spring gasket 11 to effectively increase the strength of the spring gasket 11, thereby making a more sealed reduction furnace chassis 2 electrode 1 sealing assembly have the beneficial effects of good sealing, low material leakage, high production efficiency and high product reliability.

[0049] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The flat gasket 5 has an annular first tooth 15 at one end close to the insulating base 4, and the first tooth 15 is attached to the electrode 1 body. The insulating base 4 has an annular second tooth 16 at one end close to the flat gasket 5, and the second tooth 16 is attached to the outer wall of the first tooth 15. The first O-ring 6 is located at the top of the first tooth 15, and the second O-ring 7 is located at the top of the second tooth 16; the height of the second tooth 16 is less than 3mm of the height of the first tooth 15. Since the current compression amount of the O-ring is only 1mm, this improvement can increase the compression amount of the first O-ring 6 and the second O-ring 7, thereby enhancing the sealing performance.

[0050] An annular conical groove 17 is provided on one side of the locking flange 13 close to the second clamping ring 12, and a first boss 18 is provided in the middle of the conical groove 17. The outer diameter of the first boss 18 is smaller than the inner diameter of the spring washer 11. When tightening, the setting of the conical groove 17 enables the spring washer 11 to automatically align and center, effectively avoiding displacement of the spring washer 11 when clamped.

[0051] In this embodiment, the outer diameter of the first boss 18 is 2 mm smaller than the inner diameter of the spring washer 11, which not only facilitates the spring washer 11 to be sleeved on the first boss 18, but also avoids excessive gaps that may cause displacement of the spring washer 11 during compression.

[0052] The material of the spring washer 11 is martensitic stainless steel. The mechanical properties of martensitic stainless steel are as follows: tensile strength ≥ 850Mpa, yield strength ≥ 700Mpa, elongation ≥ 14%, and hardness HRC between 20 and 60. Therefore, it is most appropriate to select martensitic stainless steel as the material of the spring washer 11, which can effectively extend the service life of the spring washer 11.

[0053] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The first clamping ring 10 has a conical body 19 on one side close to the second clamping ring 12, and the large head end of the conical body 19 is integrally formed with the side of the first clamping ring 10 close to the second clamping ring 12; the conical body 19 has a second boss 20 on one end close to the second clamping ring 12, and one end of the spring washer 11 is sleeved on the second boss 20, and the other end of the spring washer 11 passes through the second clamping ring 12 and abuts against the conical groove 17. During the tightening process, the spring washer 11 is effectively prevented from deviating from the center of the electrode 1 under the action of friction, thereby causing inconsistent clamping force on the circumference, and the size of the second boss 20 can just pass through the spring washer 11, so that the spring washer 11 is firmly pressed on the center of the electrode 1, so that the clamping force on the circumference is uniform.

[0054] The ceramic pressure ring 8 has an annular inner groove (not shown in the figure) on one side close to the chassis 2, and the flat washer 9 is located in the groove of the annular inner groove. The setting of the annular inner groove can limit the position of the flat washer 9 and prevent the flat washer 9 from being located, so as to ensure that the flat washer 9 can be tightly clamped between the ceramic pressure ring 8 and the chassis 2, and effectively prevent the material from leaking downward along the mounting hole (not shown in the figure) of the electrode 1.

[0055] The flat gasket 9 is a high-purity graphite gasket. Since the high-purity graphite gasket has good corrosion resistance, high / low temperature resistance, good compression resilience and high strength, it is most appropriate to use the high-purity graphite gasket for the flat gasket 9, which can make the component more sealed.

[0056] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The outer diameter of the electrode 1 body is adapted to the inner diameter of the spring washer 11. When the locking flange 13 is tightened, the spring washer will not deviate under the action of friction, and the pressing force on the circumference of the flat washer 9, the first O-ring 6 and the second O-ring 7 can also be consistent.

[0057] The outer sleeve of the ceramic pressure ring 8 is provided with an insulating sleeve 21, and the insulating sleeve 21 is attached to the bottom plate 2 and the electrode 1 body. The insulating sleeve 21 can effectively protect the ceramic pressure ring 8 and also has a sealing effect.

[0058] Several locking bolts 14 all have a nut 22, and the nut 22 has a screw 23 on one side close to the locking flange 13. The screw 23 penetrates the locking flange 13 along the axial thread of the locking flange 13 and abuts against the second clamping ring 12. By rotating the nut 22 clockwise, the screw 23 rotates clockwise and pushes the second clamping ring 12 and the spring washer 11, thereby applying pressure to the first clamping ring 10 and the insulating base 4, so that the compression amount of the flat washer 9, the first O-ring 6 and the second O-ring 7 is met.

[0059] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 In this embodiment, the ceramic pressure ring 8 and the flat gasket 9 are used as the first seal, which is to tightly press the flat gasket 9 onto the reduction furnace bottom plate 2 through the ceramic pressure ring 8 to prevent the material from leaking downward along the mounting hole of the electrode 1. The locking bolt 14, the locking flange 13, the spring washer, the pressure ring, and the insulating base 4 constitute the second seal, that is, the pressure between the upper and lower insulating bases 4 and the flat gasket 5 is adjusted by the locking device, so that the first O-ring 6 and the second O-ring 7 in the middle are deformed, thereby preventing the material from leaking outward from the gap between the electrode 1 rod and the insulating base 4 and the flat gasket 5.

[0060] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 In this embodiment, the flat gasket 9 in the groove of the ceramic pressure ring 8 is initially designed to be 3 mm. Due to the insufficient thickness, the compression amount during the pressing process does not meet the requirements, so that the ceramic pressure ring 8 and the reduction furnace plate are not sealed. Since the ceramic pressure ring 8 is not compressible, the seal is not tight and leakage occurs. For this reason, in this embodiment, the thickness of the flat gasket 9 is increased from 3 mm to 4 mm, thereby increasing the compression amount, so that the graphite flat gasket 9 is tightly attached to the chassis 2 to achieve sealing.

[0061] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A more sealed reduction furnace bottom plate electrode sealing assembly, characterized in that: including electrodes and a chassis; The chassis is sleeved on the electrode, the outer wall of the electrode is sleeved with an electrode body, the outer wall of the electrode body is sleeved with an insulating base and a flat gasket, the flat gasket is located at one end of the electrode and fits the electrode body, and the insulating base is located at the other end of the electrode and fits the electrode body; One end of the insulating base close to the flat gasket is meshed with the flat gasket, and a first O-ring and a second O-ring are clamped at the meshing connection between the insulating base and the flat gasket; One end of the flat gasket away from the insulating base passes through the chassis, and a ceramic pressure ring is sleeved on the outer wall of the flat gasket passing through the chassis, and an annular flat gasket is clamped between the ceramic pressure ring and the chassis, and the thickness of the flat gasket is 4 mm; The end of the insulating base away from the flat gasket is provided with a first clamping ring, a spring washer, a second clamping ring, a locking flange and a plurality of locking bolts in sequence. The first clamping ring, the spring washer, the second clamping ring and the locking flange are sleeved on the electrode body, and the plurality of locking bolts all pass through the locking flange and abut against the second clamping ring.

2. A more sealed reduction furnace bottom plate electrode sealing assembly according to claim 1, characterized in that: The flat gasket has an annular first tooth at one end close to the insulating base, and the first tooth is attached to the electrode body; the insulating base has an annular second tooth at one end close to the flat gasket, and the second tooth is attached to the outer wall of the first tooth; the first O-type sealing ring is located at the top of the first tooth, and the second O-type sealing ring is located at the top of the second tooth; The second tooth height is 3 mm less than the first tooth height.

3. A more sealed reduction furnace bottom plate electrode sealing assembly according to claim 1, characterized in that: A ring-shaped conical groove is formed on a surface of the locking flange close to the second clamping ring, and a first boss is formed in the middle of the conical groove. The outer diameter of the first boss is smaller than the inner diameter of the spring washer.

4. A more sealed reduction furnace bottom plate electrode sealing assembly according to claim 1, characterized in that: The spring washer is made of martensitic stainless steel.

5. A more sealed reduction furnace bottom plate electrode sealing assembly according to claim 3, characterized in that: The first clamping ring has a conical body on one side close to the second clamping ring, and the large end of the conical body is integrally formed with the first clamping ring on one side close to the second clamping ring; The conical body has a second boss at one end close to the second clamping ring, one end of the spring washer is sleeved on the second boss, and the other end of the spring washer passes through the second clamping ring and abuts against the conical groove.

6. A more sealed reduction furnace bottom plate electrode sealing assembly according to claim 1, characterized in that: The ceramic pressure ring has an annular inner groove on one side close to the bottom plate, and the flat washer is located in the groove of the annular inner groove.

7. A more sealed reduction furnace bottom plate electrode sealing assembly according to claim 1, characterized in that: The flat gasket is a high-purity graphite gasket.

8. A more sealed reduction furnace bottom plate electrode sealing assembly according to claim 1, characterized in that: The outer diameter of the electrode body is adapted to the inner diameter of the spring washer.

9. A more sealed reduction furnace bottom plate electrode sealing assembly according to claim 1, characterized in that: The outer sleeve of the ceramic pressure ring is provided with an insulating sleeve, and the insulating sleeve is attached to the bottom plate and the electrode body.

10. A more sealed reduction furnace bottom plate electrode sealing assembly according to claim 1, characterized in that: Several locking bolts are provided with nuts, and a screw rod is provided on a side of the nuts close to the locking flange. The screw rod passes through the locking flange along the axial thread of the locking flange and abuts against the second clamping ring.

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