Hot braising pit
By using a structure of snap ring and latch in the hot stewing pit, the side wall lining allows free expansion and contraction when the hot and cold alternates, solving the problems of short service life and difficult construction of the existing hot stewing pit, achieving a longer service life and lower construction difficulty.
Patent Information
- Application Number
- CN202421646316.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-12
AI Technical Summary
The existing hot stewing pit has a short service life and is difficult to construct. It is mainly due to the warping and deformation of the billet under the cold and hot conditions, causing the bolts and embedded sleeves to be pulled out from the concrete pit wall.
A hot stewing pit is designed, using a structure of a snap ring and a latch. The snap ring is pre-buried on the inner side wall of the concrete foundation pit. The latch is fixed on the side wall lining plate and inserted into the latch hole. The inner diameter of the latch hole is greater than the outer diameter of the latch, allowing the side wall lining plate to expand and contract freely when the hot and cold alternates.
Through this structure, the thermal expansion and contraction problem caused by the rigid fixing method of conventional embedded bolts is solved, which extends the service life of the hot stewing pit, and reduces the construction difficulty and manufacturing cost.
Smart Images
Figure CN222809487U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel slag hot stewing treatment process equipment, in particular to a hot stewing pit. Background Art
[0002] The slag hot stewing process is to directly dump the molten slag produced by steelmaking into the hot stewing pit through a crane. After each pouring of the slag, an excavator is used to turn over and break up large pieces of slag, and water is pumped manually for cooling. When the loading volume reaches about 80% of the hot stewing slag pit volume, the hot stewing cover is covered, and the automatic control of water spraying generates steam to digest the slag. After 8 to 12 hours, when the temperature in the hot stewing pit drops below 60°C, the hot stewing cover is opened and the slag is shoveled out with an excavator for the next step of processing.
[0003] Hot stewing pits usually use heat-resistant concrete as pit walls and a certain thickness of steel billets as linings. Hot stewing pits are in a high temperature, high humidity, rapid cooling and rapid heating environment during the production process, and the working conditions are very harsh. Some companies use T-head bolts to connect the hot stewing pit lining to the concrete wall. Although this fixing method can firmly position the steel billet, due to the repeated thermal expansion and contraction of the steel billet under the working conditions of rapid cooling and heating, once the degree of warping and deformation of the steel billet exceeds the limit, the bolts and embedded sleeves can be pulled out of the concrete pit wall, which ultimately affects the continuous use of the hot stewing pit. Moreover, this method places high demands on the accuracy of steel billet manufacturing and processing and civil construction.
[0004] Therefore, it is necessary to develop a hot stewing pit to improve the service life of the hot stewing pit and reduce the construction difficulty of the hot stewing pit. Utility Model Content
[0005] The utility model aims to provide a hot stewing pit to solve the problems of short service life and great difficulty in construction of the existing hot stewing pit.
[0006] In order to solve the above technical problems, the utility model provides a hot stewing pit, comprising: a concrete foundation pit; a side wall lining plate, which is arranged at the inner wall of the concrete foundation pit and supported by the bottom of the concrete foundation pit; a clamping ring, which is pre-buried on the inner wall of the concrete foundation pit and has a vertically penetrating clamping hole; and a latch, which is fixed on the side wall lining plate and inserted into the clamping hole, and the inner diameter of the clamping hole is larger than the outer diameter of the part of the latch inserted into the clamping hole.
[0007] Optionally, the clamping ring includes a U-shaped clamping portion, the clamping portion extends out of the inner wall of the concrete foundation pit, and the clamping hole is the inner ring of the clamping portion.
[0008] Optionally, the clamping ring further includes a plate, both ends of the clamping portion are fixedly connected to the plate, and the plate is pre-embedded on the inner wall of the concrete foundation pit.
[0009] Optionally, the latch includes a connecting portion and an inserting portion, the connecting portion is connected to the side wall lining, the inserting portion is connected to the connecting portion, the inserting portion is inserted into the card hole, and the inner diameter of the card hole is larger than the outer diameter of the part of the inserting portion inserted into the card hole.
[0010] Optionally, the number of the connecting parts is two, each of the connecting parts has a structural hole, and the plug-in part passes through the structural hole to be fixedly connected to the connecting part.
[0011] Optionally, the connecting portion is arranged perpendicular to the side wall lining plate, and the plug-in portion is arranged parallel to the side wall lining plate.
[0012] Optionally, the side wall lining and the connecting portion are integrally formed.
[0013] Optionally, a plurality of limit rods are further included, wherein the limit rods are pre-buried on the inner wall of the concrete foundation pit and extend toward the side wall lining.
[0014] Optionally, a heat insulation layer is also included, and the heat insulation layer is arranged between the concrete foundation pit and the side wall lining.
[0015] Optionally, it also includes a bottom lining plate, which is installed at the bottom of the concrete foundation pit at a predetermined slope by its own weight.
[0016] The utility model provides a hot stewing pit, which has the following beneficial effects:
[0017] Since the clamping ring is pre-buried on the inner wall of the concrete foundation pit and has a vertically penetrating clamping hole, the pin is fixed on the side wall lining and inserted into the clamping hole, and the inner diameter of the clamping hole is larger than the outer diameter of the part of the pin inserted into the clamping hole, thus allowing the side wall lining to have a certain amount of activity margin in the direction of approaching and moving away from the inner wall of the slag hot stewing pit, and realizing free expansion and contraction of the billet side wall lining under the condition of alternating hot and cold working, solving the problem of the conventional pre-buried bolt rigid fixing method that cannot freely adapt to thermal expansion and contraction and leads to a short service life of the hot stewing pit; at the same time, the pin can slide into and out of the clamping ring along the height direction of the slag hot stewing pit. Since the spiral connection is cancelled, there is no need to process bolt countersinks on the surface of the steel billet, and the inner wall of the slag hot stewing pit does not need to be pre-buried with sleeves and other connecting parts, and the processing and manufacturing cost of the side wall lining and the difficulty of construction and installation are greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a top view of the hot stewing pit in the embodiment of the utility model;
[0019] Figure 2 yes Figure 1A cross-sectional view of the hot stew pit along line AA;
[0020] Figure 3 It is a partial side view of the hot stewing pit in the embodiment of the utility model;
[0021] Figure 4 It is a top view of the clamp ring of the hot stewing pit in the embodiment of the utility model;
[0022] Figure 5 It is a side view of the clamp ring of the hot stewing pit in the embodiment of the utility model;
[0023] Figure 6 It is a schematic diagram of the structure of the lining plate and the latch in the hot stewing pit in the embodiment of the utility model.
[0024] Description of reference numerals:
[0025] 100- snap ring; 110- snap connection portion; 120- plate;
[0026] 200-latch pin; 210-connecting portion; 220-plug-in portion;
[0027] 300-limit rod;
[0028] 410-concrete foundation pit; 420-side wall lining; 430-bottom lining; 440-insulation layer. DETAILED DESCRIPTION
[0029] 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.
[0030] 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.
[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0032] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0033] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0035] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , Figure 1 1 is a top view of the hot stewing pit in the embodiment of the utility model. Figure 2 yes Figure 1 The cross-sectional view of the hot stew pit along the AA line, Figure 3 It is a partial side view of the hot stewing pit in the embodiment of the utility model. Figure 4 This is a top view of the snap ring of the hot stewing pit in the embodiment of the utility model. Figure 5 This is a side view of the clamp ring of the hot stewing pit in the embodiment of the utility model. Figure 6It is a structural schematic diagram of the liner and the latch in the hot stewing pit in an embodiment of the utility model. This embodiment provides a hot stewing pit liner fixing structure, including: a concrete foundation pit 410; a side wall liner 420, which is arranged at the inner wall of the concrete foundation pit 410 and supported by the bottom of the concrete foundation pit 410; a clamping ring 100, which is pre-buried on the inner wall of the concrete foundation pit 410 and has a vertically penetrating clamping hole; and a latch 200, which is fixed on the side wall liner 420 and inserted into the clamping hole, and the inner diameter of the clamping hole is larger than the outer diameter of the part of the latch 200 inserted into the clamping hole.
[0036] Since the clamping ring 100 is pre-buried on the inner wall of the concrete foundation pit 410- and has a vertically penetrating clamping hole, the pin 200 is fixed on the side wall lining plate 420 and inserted into the clamping hole, and the inner diameter of the clamping hole is larger than the outer diameter of the part of the pin 200 inserted into the clamping hole, therefore, a certain amount of activity margin is allowed for the side wall lining plate 420 in the direction close to and away from the inner wall of the slag hot stewing pit, and the free expansion and contraction of the steel billet side wall lining plate 420 can be achieved under the working conditions of alternating hot and cold, thus solving the problem of the conventional pre-buried bolt rigid fixing method that cannot freely adapt to thermal expansion and contraction and leads to a short service life of the hot stewing pit; at the same time, the pin 200 can slide into and out of the clamping ring 100 along the height direction of the steel slag hot stewing pit. Since the spiral connection is cancelled, there is no need to process bolt countersinks on the surface of the steel billet, and the inner wall of the steel slag hot stewing pit does not need to be pre-buried with sleeves and other connectors, and the processing and manufacturing cost and construction and installation difficulty of the side wall lining plate 420 are greatly reduced.
[0037] The clamping ring 100 includes a U-shaped clamping portion 110 , the clamping portion 110 extends out of the inner wall of the slag hot stewing pit, and the clamping hole is the inner circle of the clamping portion 110 .
[0038] The clamping ring 100 also includes a plate 120, and both ends of the clamping portion 110 are fixedly connected to the plate 120. The plate 120 is embedded in the inner wall of the slag hot stewing pit. In this way, the firmness of the clamping ring 100 can be improved, and the service life of the hot stewing pit is further improved.
[0039] In this embodiment, the clamping portion 110 and the plate 120 are welded.
[0040] In this embodiment, the latch 200 includes a connecting portion 210 and an inserting portion 220, the connecting portion 210 is connected to the side wall lining 420, the inserting portion 220 is connected to the connecting portion 210, the inserting portion 220 is inserted into the card hole, and the inner diameter of the card hole is larger than the outer diameter of the part of the inserting portion 220 inserted into the card hole.
[0041] In this embodiment, the side wall lining plate 420 and the connecting portion 210 are integrally formed.
[0042] Preferably, the connecting portion 210 and the plug-in portion 220 are welded.
[0043] In this embodiment, the number of the connecting parts 210 is two. The connecting parts 210 have a structural hole, and the plug-in part 220 passes through the structural hole and is fixedly connected to the connecting part 210 .
[0044] Preferably, the connecting portion 210 is arranged perpendicular to the side wall lining plate 420 , and the plug-in portion 220 is arranged parallel to the side wall lining plate 420 .
[0045] Preferably, a plurality of latches 200 are fixed on one side wall lining plate 420 from top to bottom.
[0046] In this embodiment, the steel slag hot simmering pit lining fixing structure further includes a plurality of limit rods 300, which are pre-buried on the inner side wall of the steel slag hot simmering pit and extend toward the side wall lining 420. In this way, lateral support force can be provided to the side wall lining 420 to prevent the side wall lining 420 from tilting.
[0047] It also includes a bottom lining plate 430, which is installed at the bottom of the concrete foundation pit 410 at a predetermined slope by its own weight.
[0048] The hot stewing pit further includes a heat insulation layer 440 , which is disposed between the concrete foundation pit 410 and the side wall lining 420 to provide heat insulation protection.
[0049] The concrete foundation pit 410 is made of heat-resistant reinforced concrete, and the heat-resistant temperature is not less than 1000° C. The heat-resistant concrete can be ordinary silicate heat-resistant concrete or slag silicate heat-resistant concrete.
[0050] The side wall lining plate 420 and the bottom lining plate 430 are processed from steel billets of a certain thickness and arranged in a certain order in the hot stewing pit. The thickness of the side wall lining plate 420 and the bottom lining plate 430 is 220-250 mm.
[0051] A certain movable gap is left between the latch 200 and the retaining ring 100 and between adjacent side wall liners 420. The movable gap is usually 10 to 20 mm, so that the side wall liners 420 can achieve free expansion and contraction of the steel billet liners under alternating hot and cold working conditions.
[0052] The bottom lining plate 430 is installed at the bottom of the concrete foundation pit 410 at a predetermined slope by its own weight. It can protect the concrete structure at the bottom of the concrete foundation pit 410 from being damaged, and can also play a fixing and restraining role on the bottom of the side wall lining plate 4203.
[0053] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.
Claims
1. A hot stewing pit, characterized in that: include: Concrete foundation pit; A side wall lining plate, arranged at the inner side wall of the concrete foundation pit and supported by the bottom of the concrete foundation pit; A clamping ring, which is pre-buried on the inner wall of the concrete foundation pit and has a clamping hole that penetrates vertically; as well as, A latch pin is fixed on the side wall lining plate and inserted into the clamping hole, and the inner diameter of the clamping hole is larger than the outer diameter of the portion of the latch pin inserted into the clamping hole.
2. The hot stewing pit according to claim 1, characterized in that: The clamping ring comprises a U-shaped clamping portion, the clamping portion extends out of the inner side wall of the concrete foundation pit, and the clamping hole is the inner circle of the clamping portion.
3. The hot stewing pit according to claim 2, characterized in that: The clamping ring also includes a plate, and both ends of the clamping portion are fixedly connected to the plate, and the plate is pre-buried on the inner wall of the concrete foundation pit.
4. The hot stewing pit according to claim 1, characterized in that: The latch includes a connecting portion and an inserting portion, wherein the connecting portion is connected to the side wall lining plate, and the inserting portion is connected to the connecting portion, and the inserting portion is inserted into the card hole, and the inner diameter of the card hole is larger than the outer diameter of the part of the inserting portion inserted into the card hole.
5. The hot stewing pit according to claim 4, characterized in that: The number of the connecting parts is two, and the connecting parts are provided with structural holes, and the plug-in parts pass through the structural holes and are fixedly connected with the connecting parts.
6. The hot stewing pit according to claim 5, characterized in that: The connecting portion is arranged perpendicular to the side wall lining plate, and the plug-in portion is arranged parallel to the side wall lining plate.
7. The hot stewing pit according to claim 4, characterized in that: The side wall lining plate and the connecting portion are integrally formed.
8. The hot stewing pit according to claim 1, characterized in that: It also includes a plurality of limit rods, which are pre-buried on the inner wall of the concrete foundation pit and extend toward the side wall lining.
9. The hot stewing pit according to claim 1, characterized in that: It also includes a heat insulation layer, which is arranged between the concrete foundation pit and the side wall lining.
10. The hot stewing pit according to claim 1, characterized in that: It also includes a bottom lining plate, which is installed at the bottom of the concrete foundation pit at a predetermined slope by its own weight.