Fixing device of blast furnace top reversing feed valve
By designing a fixing device including a fixing bracket, a fixed trunnion, a connecting screw, a fixed pin, a claw arm clamp and a fixing nut, the problem of unstable fixing of the spindle of the top reversing feed valve of the blast furnace furnace is solved, and stable fixation and safety improvement are achieved.
Patent Information
- Application Number
- CN202421477608.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The spindle of the top reversing feed valve of the blast furnace furnace is unstable, resulting in unstable welding strength and increased risk of desoldering, threatening the safety of the operators.
A fixing device including a fixing bracket, a fixing trunnion, a connecting screw, a fixing pin, a claw arm clamp and a fixing nut is designed. Through the clamping structure of the claw arm clamp and a pressing mechanism of the fixing nut, the claw arm on the spindle is locked to ensure stability of the fixing.
It realizes stable fixation of the spindle, reduces the risk of desoldering, improves operational safety, and has certain adjustment and adaptability to facilitate stable clamping of the crimp arm.
Smart Images
Figure CN222633965U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of metallurgical blast furnaces, and in particular relates to a fixing device for a blast furnace top reversing feed valve. Background Art
[0002] The blast furnace top reversing feed valve is a reversing feed device that can distribute the incoming materials to multiple material tanks on the furnace top by switching the material channels in the valve body. To achieve the switching of the material channels, a hydraulic cylinder is often used to drive the main shaft of the equipment to rotate, thereby driving the guide plate on the main shaft to deflect, thereby directing the metallurgical raw materials to the corresponding furnace top material tank as required.
[0003] After a period of operation, the reversing feed valve needs to be inspected and maintained. During the maintenance process, for safety reasons, the main shaft of the reversing feed valve needs to be fixed to prevent it from rotating before the operator enters the valve box to perform operations. In order to fix the main shaft, the crank arm connected to the main shaft is usually welded to the external foundation; however, as the frequency of welding increases, the surface quality of the welding position deteriorates, making the welding strength unstable, the risk of desoldering increases, and the safety of the operator is threatened. Utility Model Content
[0004] The present application provides a fixing device for a blast furnace top reversing feed valve, which aims to at least to some extent solve the technical problem of unsatisfactory reliability and stability of the main shaft fixing of the blast furnace top reversing feed valve.
[0005] The embodiment of the present application provides a fixing device for a blast furnace top reversing feed valve, comprising: a fixing bracket, a fixing ear shaft, a connecting screw, a fixing pin shaft, a crank arm clamp plate and a fixing nut;
[0006] The fixed ear shaft is arranged on the fixed bracket, and the first end of the connecting screw rod is rotatably connected to the fixed ear shaft through the fixed pin shaft;
[0007] The crank arm clamps are two pieces, each of which is provided with a through hole, and the two crank arm clamps are respectively sleeved on the connecting screw rod through the through holes, and the two crank arm clamps are provided with a clamping portion on the opposite plate surfaces;
[0008] There are two fixing nuts, which are respectively screwed on the connecting screw rod, and the two fixing nuts are respectively abutted on the side plate surfaces of the two crank arm clamps which are away from each other.
[0009] In some embodiments, the clamping portion is configured as an inclined surface that matches the outer surface of the crank arm.
[0010] In some embodiments, a buffer rubber pad is provided on the clamping portion.
[0011] In some embodiments, the fixed ear shaft includes two ears arranged opposite to each other;
[0012] The two ears are arranged on the fixing bracket, and the first end of the connecting screw rod is embedded between the two ears, and the fixing pin shaft is rotatably embedded in the ear holes of the two ears.
[0013] In some embodiments, both ends of the fixing pin shaft protrude from the ear hole, and both ends of the fixing pin shaft are provided with anti-slip pins.
[0014] In some embodiments, the fixed bracket is an arched bracket, and the bottom end of the arched bracket is configured as a welding portion.
[0015] In some embodiments, a thrust piece is provided at the second end of the connecting screw.
[0016] In some embodiments, extension tubes matching the connecting screw rod are provided on both sides of the through hole of the crank arm splint, and the extension tubes are sleeved on the connecting screw rod.
[0017] In some embodiments, the fixing nut is a double nut.
[0018] In some embodiments, a detachable connecting piece is provided between the clamping parts of the two crutch clamps.
[0019] The embodiments of the present application have at least the following beneficial effects:
[0020] The fixing device of the blast furnace top reversing feeding valve provided in the embodiment of the present application includes a fixing bracket, a fixing ear shaft, a connecting screw, a fixing pin shaft, a crank arm clamp and a fixing nut, wherein the fixing bracket is the base of the device, the fixing ear shaft is installed, and the connecting screw is connected to the fixed ear shaft in a deflectable manner through the fixing pin shaft, and the crank arm clamp is in two pieces, which are sleeved on the connecting screw rod, thereby forming a clamping structure based on two crank arm clamps, and are tightened by the fixing nut, so that the crank arm on the main shaft can be clamped to lock the main shaft. On the other hand, the deflectable connection form of the connecting screw rod enables the fixing device to have a certain degree of adjustment adaptability, so as to facilitate the stable clamping of the crank arm. It is worth noting that since the connecting screw rod is locked by the fixing pin shaft, the connecting screw rod and its clamping function structure can be disassembled and assembled as needed, so that it can be installed on the valve body during maintenance, and the connecting screw rod is removed during other normal working hours to avoid interfering with the operation of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0022] Figure 1 A schematic structural diagram of a fixing device for a blast furnace top reversing feed valve in an embodiment of the present application is shown;
[0023] Figure 2 Shows Figure 1 A left side view of a fixing device for a blast furnace top reversing feed valve;
[0024] Figure 3 Shows Figure 1 Schematic diagram of the fixed state of the fixing device of the blast furnace top reversing feed valve.
[0025] Reference numerals:
[0026] 1-fixed bracket, 20 fixed ear shaft, 21-support ear, 3-connecting screw rod, 4-fixed pin shaft, 41-anti-slip pin, 5-crank arm splint, 51-clamping part, 6-fixed nut, 7-crank arm. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0028] In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific examples of processes and materials, but those of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.
[0029] The present application is described below with reference to the accompanying drawings and specific embodiments:
[0030] When inspecting and repairing the reversing feeder valve on the top of a blast furnace, the main shaft needs to be fixed to ensure the safety of the maintenance personnel. Usually, the maintenance personnel will weld the crank arm connected to the main shaft to the external foundation; however, as the frequency of welding increases, the surface quality of the welding position deteriorates, making the welding strength unstable and the risk of desoldering increased, threatening the safety of the operators.
[0031] To this end, an embodiment of the present application provides a fixing device for a blast furnace top reversing feeder valve, which aims to stabilize and fix the main shaft of the feeder valve by clamping the crank arm on the main shaft to a certain extent, while taking into account the reliability of multiple low-damage repeated uses.
[0032] See also Figure 1 , Figure 2 and Figure 3 In some embodiments, the fixing device of the blast furnace top reversing feeding valve may include: a fixing bracket 1, a fixing ear shaft 2, a connecting screw 3, a fixing pin shaft 4, a crank arm clamp 5 and a fixing nut 6.
[0033] Among them, the fixed bracket 1 is the basis of the entire device, which is used to carry the fixed ear shaft 2, the connecting screw 3, the fixed pin shaft 4, the crank arm clamp 5 and the fixing nut 6, and install the entire device on the basis given to the maintenance site.
[0034] The fixed ear shaft 2, the connecting screw rod 3 and the fixing pin shaft 4 form a deflectable support structure for supporting the crank arm clamp plate 5 and the fixing nut 6. The fixed ear shaft 2 can be arranged on the fixing bracket 1, and the first end of the connecting screw rod 3 is deflectably connected to the fixed ear shaft 2 through the fixing pin shaft 4, so that the connecting screw rod 3 can deflect with the fixing pin shaft 4 as the rotation axis.
[0035] The crank arm clamping plate 5 is composed of two pieces, and the two crank arm clamping plates 5 are arranged opposite to each other to form two clamping parts of the clamping structure. The two crank arm clamping plates 5 can be matched with each other, and through holes can be respectively opened on the two crank arm clamping plates 5, so that the two crank arm clamping plates 5 can be respectively connected to the connecting screw rod 3 through the through holes, so that they can be close to or away from each other to achieve clamping or releasing the crank arm 7 between the two crank arm clamping plates 5. Generally speaking, through holes and clamping parts 51 can be planned on the crank arm clamping plates 5, and the through holes are arranged along the thickness direction of the closing clamping plates 5 for being connected to the connecting screw rod 3, and the clamping parts 51 are opened on the opposite plate surfaces of the two crank arm clamping plates 5, so that the two clamping parts 51 are arranged opposite to each other to clamp the crank arm 7.
[0036] The fixing nut 6 is screwed onto the connecting screw 3 and is located on both sides of the overall mechanism formed by the two crank arm clamps 5, thereby limiting the distance between the two crank arm clamps 5, that is, maintaining the spacing between the two crank arm clamps 5 to stably clamp the crank arm 7. Specifically, the two fixing nuts 6 are respectively screwed onto the connecting screw 3, and the two fixing nuts 6 are respectively abutted against the side surfaces of the two crank arm clamps 5 that are opposite to each other, that is, based on the length direction of the connecting screw 3, the two fixing nuts 6 abut against the side surfaces of the two crank arm clamps 5 close to the two ends of the connecting screw 3.
[0037] Therefore, when in use, the two fixing nuts 6 can be rotated in the direction away from each other, so as to move the two crank arm pressure plates 5, expand the distance between the two crank arm clamping plates 5, and facilitate the crank arm 7 to be inserted between the two crank arm clamping plates 5, and then the two fixing nuts 6 can be rotated in the direction of approaching each other, so as to promote the two crank arm clamping plates 5 to be relatively close, until the crank arm 7 is pressed tightly. Alternatively, after the maintenance operation is completed, the two fixing nuts 6 can be rotated in the direction away from each other, so as to move the two crank arm pressure plates 5, expand the distance between the two crank arm clamping plates 5, and facilitate the crank arm 7 to be separated from the two crank arm clamping plates 5.
[0038] In some embodiments, the shape of the crank arm 7 is mostly wedge-shaped. In order to adapt to the clamping operation, the clamping portion 51 is configured as an inclined surface that matches the outer shape of the crank arm 7.
[0039] In some embodiments, in order to protect the surface quality of the crank arm 7 , a buffer pad, such as a rubber pad, may be provided on the clamping portion 51 .
[0040] In some embodiments, the fixed ear shaft 2 can be set as a U-shaped support ear structure, that is, it includes two support ears 21 arranged opposite to each other; the two support ears 21 are arranged on the fixed bracket 1, and the first end of the connecting screw rod 3 is embedded between the two support ears 21, and the fixed pin shaft 4 can be deflectably embedded in the ear holes of the two support ears 21.
[0041] In some embodiments, both ends of the fixing pin shaft 4 protrude from the ear hole, and both ends of the fixing pin shaft 4 are provided with anti-falling pins 41 to prevent the fixing pin shaft 4 from falling out.
[0042] In some embodiments, the fixed bracket 1 is an arch bracket, and the bottom end of the arch bracket is configured as a welding portion for welding to an on-site foundation.
[0043] In some embodiments, a thrust piece may also be provided at the second end of the connecting screw rod 3 to prevent the fixing nut 6 from falling out.
[0044] In some embodiments, considering that the crank arm splint 5 is subjected to pressure, in order to maintain its clamping reliability, extension tubes matching the connecting screw 3 are provided on both sides of the through hole of the crank arm splint 5, and the extension tubes are sleeved on the connecting screw 3, thereby increasing the contact surface between the crank arm splint 5 and the connecting screw 3, preventing the crank arm splint 5 from tilting up, and ensuring the stability of its clamping posture.
[0045] In some embodiments, the fixing nut 6 can be configured as a double nut to ensure the reliability of the clamping state.
[0046] In some embodiments, in order to enhance the clamping effect, a detachable connecting piece may be provided between the clamping portions 51 of the two crank arm clamps 5 to further tighten the two crank arm clamps 51 in the clamping state.
[0047] The embodiments of the present application have at least the following beneficial effects:
[0048] The fixing device of the blast furnace top reversing feeding valve provided in the embodiment of the present application includes a fixing bracket, a fixing ear shaft, a connecting screw, a fixing pin shaft, a crank arm clamp and a fixing nut, wherein the fixing bracket is the base of the device, the fixing ear shaft is installed, and the connecting screw is connected to the fixed ear shaft in a deflectable manner through the fixing pin shaft, and the crank arm clamp is in two pieces, which are sleeved on the connecting screw rod, thereby forming a clamping structure based on two crank arm clamps, and are tightened by the fixing nut, so that the crank arm on the main shaft can be clamped to lock the main shaft. On the other hand, the deflectable connection form of the connecting screw rod enables the fixing device to have a certain degree of adjustment adaptability, so as to facilitate the stable clamping of the crank arm. It is worth noting that since the connecting screw rod is locked by the fixing pin shaft, the connecting screw rod and its clamping function structure can be disassembled and assembled as needed, so that it can be installed on the valve body during maintenance, and the connecting screw rod is removed during other normal working hours to avoid interfering with the operation of the valve body.
[0049] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0050] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0051] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0052] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0053] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.
[0055] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.
[0056] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. A fixing device for a blast furnace top reversing feed valve, characterized in that: include: A fixing bracket, a fixing ear shaft, a connecting screw, a fixing pin shaft, a crank arm clamp plate and a fixing nut; The fixed ear shaft is arranged on the fixed bracket, and the first end of the connecting screw rod is rotatably connected to the fixed ear shaft through the fixed pin shaft; The crank arm clamps are two pieces, each of which is provided with a through hole, and the two crank arm clamps are respectively sleeved on the connecting screw rod through the through holes, and the two crank arm clamps are provided with a clamping portion on the opposite plate surfaces; There are two fixing nuts, which are respectively screwed on the connecting screw rod, and the two fixing nuts are respectively abutted on the side plate surfaces of the two crank arm clamps which are away from each other.
2. The fixing device for the blast furnace top reversing feed valve according to claim 1, characterized in that: The clamping portion is configured as an inclined surface adapted to the outer profile of the crank arm.
3. The fixing device for the blast furnace top reversing feed valve according to claim 1, characterized in that: A buffer rubber pad is arranged on the clamping part.
4. The fixing device for the blast furnace top reversing feed valve according to claim 1, characterized in that: The fixed ear shaft includes two supporting ears arranged opposite to each other; The two ears are arranged on the fixing bracket, and the first end of the connecting screw rod is embedded between the two ears, and the fixing pin shaft is rotatably embedded in the ear holes of the two ears.
5. The fixing device for the blast furnace top reversing feed valve according to claim 4, characterized in that: Both ends of the fixing pin shaft protrude from the ear hole, and both ends of the fixing pin shaft are provided with anti-dropping pins.
6. The fixing device for the blast furnace top reversing feed valve according to claim 1, characterized in that: The fixing bracket is an arch bracket, and the bottom end of the arch bracket is arranged as a welding portion.
7. The fixing device for the blast furnace top reversing feed valve according to claim 1, characterized in that: The second end of the connecting screw is provided with a thrust piece.
8. The fixing device for the blast furnace top reversing feed valve according to claim 1, characterized in that: Extension tubes matching the connecting screw rod are arranged on both sides of the through hole of the crank arm clamp plate, and the extension tubes are sleeved on the connecting screw rod.
9. The fixing device for the blast furnace top reversing feed valve according to claim 1, characterized in that: The fixing nut is a double nut.
10. The fixing device for the blast furnace top reversing feed valve according to claim 1, characterized in that: A detachable connecting piece is arranged between the clamping parts of the two crank arm clamping plates.