Blanking isolating valve of calcining furnace and calcining furnace

Abstract

The utility model provides a calcining furnace discharging isolating valve and a calcining furnace. And the blanking isolating valve is arranged between the tank body and the cooling water jacket. The discharging isolating valve comprises a main shell with a discharging channel, a plurality of blocking rollers arranged in parallel are arranged in the discharging channel of the main shell, and the blocking rollers are rotationally connected with the main shell through rotating shafts. And under the driving action of the driving part, the plurality of blocking rollers can rotate synchronously. The cross section of the blocking roller is of an oval structure, and the blocking roller is provided with two working positions. When the blocking rollers are located at the first working positions, the long shafts of the blocking rollers are in the horizontal state, and the blocking rollers block the discharging channel of the main shell. And when the blocking roller is in the second working position, the short shaft of the blocking roller is in a horizontal state. According to the calcining furnace discharging isolating valve and the calcining furnace, the maintenance time of the cooling water jacket can be shortened, and the service life of the calcining furnace can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of calcining furnaces, in particular to a calcining furnace unloading isolation valve and a calcining furnace. Background Art

[0002] like Figure 1 As shown in the figure, the calciner's operating principle is that the green petroleum coke in the pre-calcination silo is fed into the hopper on the top of the pot-type calciner by an electric charging trolley. Under the action of gravity, the green coke is continuously discharged from the bottom of the pot-type calciner, and then enters the calciner tank for calcination. After calcination in the tank, the petroleum coke is indirectly cooled by the cooling water jacket to a temperature below 100°C. It then passes through an automatic discharger, enters a vibrating conveyor, and is fed into the secondary crushing and batching section's elevator for storage in the calcined material storage silo.

[0003] When the calcined petroleum coke is indirectly cooled to a material temperature below 100°C through a cooling water jacket, the circulating water in the water jacket runs 24 hours a day, and the chloride ions in the circulating water will cause scaling, which can easily cause damage, rupture, and leakage in the water jacket, making it impossible to use normally.

[0004] When cleaning and maintaining the water jacket of an existing calciner, the petroleum coke in the calciner material box and the calcined coke in the water jacket must be completely emptied before the maintenance can be carried out, resulting in a waste of raw materials. At the same time, the raw materials in the tank body contain heat and need to be reheated after being emptied, which not only wastes energy, but also causes great damage to the tank body after reheating, ultimately affecting production and product quality. Utility Model Content

[0005] In response to the above problems, the present application provides a calcining furnace unloading isolation valve and a calcining furnace, which can shorten the maintenance time of the cooling water jacket, reduce damage to the material box, extend the service life of the calcining furnace, and reduce economic losses.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A calcining furnace discharge isolation valve is provided between the tank body and the cooling water jacket;

[0008] It comprises a main shell with a blanking channel, wherein a plurality of parallel blocking rollers are arranged in the blanking channel of the main shell, and the blocking rollers are rotatably connected to the main shell through a rotating shaft;

[0009] Under the driving action of the driving component, the plurality of blocking rollers can rotate synchronously;

[0010] The cross section of the blocking roller is an elliptical structure, and the blocking roller has two working positions;

[0011] When the blocking roller is in the first working position, the long axis of the blocking roller is in a horizontal state, and a plurality of the blocking rollers form a blockage on the blanking channel of the main shell;

[0012] When the blocking roller is in the second working position, the short axis of the blocking roller is in a horizontal state, and the material in the tank body can fall into the cooling water jacket below through the material dropping channel.

[0013] Furthermore, the driving component includes a driving shaft rotatably arranged outside the main shell, both ends of the driving shaft are connected to the rotating shaft through a transmission mechanism, and a driving motor for driving the driving shaft to rotate is provided on the main shell.

[0014] Furthermore, the transmission mechanism includes a driving sprocket arranged on the drive shaft and a driven sprocket arranged on the rotating shaft, adjacent driven sprockets are connected by a first chain, and the driving sprocket is connected to the driven sprocket close to the drive shaft by a second chain.

[0015] Furthermore, the blocking roller includes an outer cylinder and an inner cylinder arranged coaxially, a plurality of connecting ribs are provided between the inner cylinder and the outer cylinder, and the plurality of connecting ribs are radially arranged around the inner cylinder.

[0016] Furthermore, the rotating shaft is arranged in the inner cylinder, and a limiting structure is provided between the rotating shaft and the inner cylinder, so that the blocking roller can rotate synchronously with the rotating shaft.

[0017] Furthermore, the inner hole cross section of the inner cylinder is a regular hexagonal structure.

[0018] Furthermore, end plates are respectively provided at both ends of the outer cylinder, and the end plates are fixedly connected to the connecting ribs in a detachable manner, and the end plates are provided with through holes for accommodating the inner cylinder.

[0019] Furthermore, the inner cylinder is provided with a set screw for tightening the rotating shaft, and the outer cylinder is provided with a avoidance hole coaxially arranged with the set screw.

[0020] Furthermore, a first flange plate is provided at the upper end of the main shell, and a second flange plate is provided at the lower end of the main shell.

[0021] A calcining furnace comprises the calcining furnace unloading isolation valve.

[0022] The beneficial effects of the utility model are:

[0023] The present invention provides a calciner discharge shutoff valve disposed between the tank and the cooling water jacket. This valve allows the material inside the tank to be isolated during maintenance or replacement of the cooling water jacket, allowing only the calcined coke in the jacket to be drained. This ensures product quality and yield while also shortening maintenance time, minimizing damage to the feed bin, extending the calciner's service life, and reducing economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of an existing calcining furnace;

[0025] Figure 2 A schematic diagram of the installation structure of a calcining furnace discharge isolation valve provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of the three-dimensional structure of a calcining furnace discharge isolation valve provided in an embodiment of the present application;

[0027] Figure 4 A front view of a calcining furnace discharge isolation valve provided in an embodiment of the present application;

[0028] Figure 5 for Figure 4 AA section view in;

[0029] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of part A;

[0030] Figure 7 A top view of a calcining furnace discharge isolation valve provided in an embodiment of the present application;

[0031] Figure 8 for Figure 7 BB cross-sectional view in;

[0032] Figure 9 for Figure 8 Schematic diagram of the enlarged structure of part B;

[0033] Figure 10 Schematic diagram of the three-dimensional structure of the blocking roller;

[0034] Figure 11 An exploded view of the blocking roller;

[0035] Figure 12 This is a structural schematic diagram of a calcining furnace discharge isolation valve in an open state provided in an embodiment of the present application.

[0036] In the figure: 1. Tank body;

[0037] 2. Cooling water jacket;

[0038] 3. Unloading shut-off valve; 31. Main shell; 311. Mounting plate; 312. First rib plate; 313. First flange plate; 314. Second flange plate; 32. Blocking roller; 321. Outer cylinder; 3211. Avoidance hole; 322. Inner cylinder; 323. Connecting ribs; 324. End plate; 3241. Through hole; 325. Screw; 33. Rotating shaft; 341. Drive shaft; 342. Drive motor; 343. Driving sprocket; 344. Driven sprocket; 345. First chain; 346. Second chain; 35. Set screw. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be described in detail below in conjunction with the drawings in the embodiments of this application. The described embodiments are only part of the embodiments of this application, not all of the embodiments. All other embodiments obtained by those skilled in the art without creative work based on the embodiments of this application should fall within the scope of protection of this application.

[0040] For the convenience of description, first define the coordinate system for a calcining furnace blanking valve 3 as follows Figure 3 As shown, the left-right direction is the horizontal direction, the front-back direction is the longitudinal direction, and the up-down direction is the vertical direction.

[0041] Example 1

[0042] like Figure 2 As shown, a calcining furnace unloading isolation valve 3 is arranged between the tank body 1 and the cooling water jacket 2, the upper end of the unloading isolation valve 3 is fixedly connected to the furnace bottom plate in a detachable manner, and the lower end of the unloading isolation valve 3 is fixedly connected to the feed port of the cooling water jacket 2 in a detachable manner.

[0043] like Figure 3 、 Figure 4 and Figure 5 As shown, a calcining furnace discharge isolation valve 3 includes a main housing 31 with a discharge channel. For example, the main housing 31 includes four side panels, which are connected end to end to form a cylindrical structure with a square cross-section. The interior space of the cylindrical structure serves as the discharge channel.

[0044] A plurality of blocking rollers 32 are provided in the blanking channel of the main housing 31. The blocking rollers 32 are parallel to each other and arranged in a line along the horizontal direction. Figure 3In the coordinate system shown, the blocking rollers 32 extend longitudinally, and a plurality of the blocking rollers 32 are arranged in a line transversely. The blocking rollers 32 are rotatably connected to the main housing 31 via a rotating shaft 33, and are driven by a driving component to rotate the plurality of blocking rollers 32 synchronously.

[0045] As a specific implementation, three blocking rollers 32 are rotatably disposed in the main housing 31 described in this embodiment.

[0046] The cross section of the blocking roller 32 is an elliptical structure, and the blocking roller 32 has two working positions. When the blocking roller 32 is in the first working position, Figure 5 As shown, the long axis of the blocking roller 32 is in a horizontal state, and a plurality of the blocking rollers 32 form a blockage on the blanking channel of the main shell 31. At this time, the material in the tank body 1 above cannot pass through the blanking channel into the cooling water jacket 2 below, and the blanking isolation valve 3 is in a closed state. When the blocking roller 32 is in the second working position, as shown Figure 12 As shown, the short axis of the blocking roller 32 is in a horizontal state. Since the short axis length of the elliptical cross-section is smaller than the long axis length, at this time, several of the blocking rollers 32 cannot block the blanking channel of the main shell 31. The material in the tank body 1 above can pass through the gaps between the blocking rollers 32 and the blocking rollers 32, and between the blocking rollers 32 and the main shell 31 and fall into the cooling water jacket 2 below. The blanking isolation valve 3 is in an open state.

[0047] Because the tank 1 contains a large amount of raw materials and is heavy (generally around 3.5 tons), a straight plate as a blocking structure would have limited load-bearing capacity and be prone to deformation. The present embodiment uses a blocking roller 32 with an elliptical cross-section as the blocking structure. This improves load-bearing capacity and reduces deformation, while also reducing motion resistance by adopting a rotational control method.

[0048] like Figure 3 and Figure 4 As shown, the driving component includes a drive shaft 341, which is parallel to the blocking roller 32 and located on one side of the main housing 31. Both ends of the drive shaft 341 are rotatably connected to the main housing 31 via bearing assemblies. A drive motor 342 is provided on the main housing 31 for rotating the drive shaft 341. Both ends of the drive shaft 341 are connected to the rotating shaft 33 via a transmission mechanism.

[0049] As a specific embodiment, the transmission mechanism described in this embodiment includes a driving sprocket 343 provided on the drive shaft 341 and a driven sprocket 344 provided on each of the rotating shafts 33. Both the driving sprocket 343 and the driven sprocket 344 are double sprockets. Adjacent driven sprockets 344 are connected by a first chain 345, and the driving sprocket 343 is connected to the driven sprocket 344 closest to the drive shaft 341 by a second chain 346.

[0050] As a specific embodiment, the main housing 31 in this embodiment is provided with two mounting plates 311, and a first rib 312 is provided between the mounting plates 311 and the main housing 31. The drive shaft 341 is located between the two mounting plates 311, and both ends of the drive shaft 341 are rotatably connected to the mounting plates 311 via bearing assemblies.

[0051] As a specific implementation, in this embodiment, the power output end of the driving motor 342 is a hollow shaft, and the driving shaft 341 passes through the hollow shaft and rotates under the drive of the driving motor 342 .

[0052] Further, if Figure 7 、 Figure 8 、 Figure 10 and Figure 11 As shown, the blocking roller 32 includes an outer cylinder 321 having an elliptical cylindrical cross-section. An inner cylinder 322 is disposed within the outer cylinder 321 and is coaxially arranged with the outer cylinder 321. A plurality of connecting ribs 323 are disposed between the inner cylinder 322 and the outer cylinder 321, and the connecting ribs 323 are radially and evenly arranged around the inner cylinder 322. For example, eight connecting ribs 323 are disposed between the inner cylinder 322 and the outer cylinder 321, and the eight connecting ribs 323 are radially and evenly arranged around the inner cylinder 322. The rotating shaft 33 extends through the inner cylinder 322, and a limiting structure is provided between the rotating shaft 33 and the inner cylinder 322, enabling the blocking roller 32 to rotate synchronously with the rotating shaft 33. Both ends of the rotating shaft 33 are rotatably connected to the main housing 31 via bearing assemblies.

[0053] In this way, not only the structural strength of the blocking roller 32 can be ensured, but also the weight and material of the blocking roller 32 can be reduced, thereby reducing the production cost.

[0054] As a specific implementation method, Figure 6 As shown, in this embodiment, the inner hole cross-section of the inner cylinder 322 is a regular hexagonal structure. Correspondingly, the cross-section of the middle part of the rotating shaft 33 is a regular hexagonal structure that matches the inner hole of the inner cylinder 322.

[0055] Furthermore, in order to prevent the material from entering the interior of the blocking roller 32, as shown in FIG. Figure 9 、 Figure 10 and Figure 11 As shown, end plates 324 are provided at both ends of the outer cylinder 321, and the end plates 324 are detachably fixedly connected to the connecting ribs 323. Exemplarily, the end plates 324 are fixedly connected to the end surfaces of the connecting ribs 323 via screws 325. The end plates 324 are provided with through holes 3241 for accommodating the inner cylinder 322.

[0056] Furthermore, the inner cylinder 322 is provided with a set screw 35 for tightening the rotating shaft 33, and the outer cylinder 321 is provided with a relief hole 3211 coaxially arranged with the set screw 35. During installation, a tightening tool can be inserted through the relief hole 3211 to tighten the set screw 35.

[0057] As a specific implementation method, Figure 9 As shown, two set screws 35 are provided on the inner cylinder 322 described in this embodiment. The two set screws 35 are respectively located at the two ends of the inner cylinder 322 and located on the outer side of the end plate 324 (the side opposite to the two end plates 324 is the inner side).

[0058] As a specific embodiment, in this embodiment, a first flange plate 313 is provided at the upper end of the main housing 31, and the first flange plate 313 is fixedly connected to the furnace bottom plate via a bolt assembly. A second flange plate 314 is provided at the lower end of the main housing 31, and the second flange plate 314 is fixedly connected to the connecting flange of the cooling water jacket 2 via a bolt assembly.

[0059] A calcining furnace includes a blanking isolation valve 3 provided between a tank body 1 and a cooling water jacket 2. The blanking isolation valve 3 is as described above and will not be described in detail here.

[0060] Example 2

[0061] Support plates extending outward perpendicular to the side panels of the main shell 31 are provided on the front and rear sides of the main shell 31 below the rotating shaft 33, and several second ribs are evenly distributed along the length direction of the support plate between the lower side surface of the support plate and the side panels of the main shell 31.

[0062] The driving component includes a slide plate slidably mounted on the upper side of the support plate, and the slide plate is slidably connected to the support plate via a sliding assembly. A rack is removably fixed to the upper side of the slide plate, and gears are mounted on each end of the rotating shaft 33. The gears and racks are meshed on the same side of the main housing 31. When the rack slides left and right relative to the main housing 31, it drives the gears to rotate, thereby driving the blocking roller 32 to rotate.

[0063] The drive component also includes a connecting frame located on the left or right side of the main housing 31, with both ends of the connecting frame being detachably fixedly connected to the slide. For example, the connecting frame is located on the left side of the main housing 31. A driving cylinder is provided on the inner side of each slide (with the side facing the main housing 31 as the inner side). The cylinder body of the driving cylinder is detachably connected to the main housing 31, and the rod end of the piston rod of the driving cylinder is detachably connected to the connecting frame.

[0064] As a specific implementation, the sliding assembly described in this embodiment adopts a linear guide pair, including a guide rail arranged on the support plate, and a slider that cooperates with the guide rail is provided on the slide.

[0065] The rest of the structure is the same as that of the first embodiment.

[0066] Example 3

[0067] The middle portion of the rotating shaft 33 is provided with a flat opening, and the inner hole shape of the inner cylinder 322 matches the middle portion of the rotating shaft 33. The rest of the structure is the same as that of the first embodiment.

[0068] Other embodiments obtained by those skilled in the art by combining, splitting, reorganizing, etc. the embodiments provided in this application do not exceed the scope of protection of this application.

[0069] The above specific implementation methods provide a detailed description of the purpose, technical solutions and beneficial effects of the embodiments of the present application. The above is only a specific implementation method of the embodiments of the present application and is not intended to limit the scope of protection of the embodiments of the present application. That is, any modifications, equivalent replacements, improvements, etc. made on the basis of the embodiments of the present application should be included in the scope of protection of the embodiments of the present application.

Claims

1. A calcining furnace blanking isolation valve, characterized by: It is arranged between the tank body (1) and the cooling water jacket (2); The invention comprises a main shell (31) having a blanking channel, wherein a plurality of parallel-arranged blocking rollers (32) are provided in the blanking channel of the main shell (31), and the blocking rollers (32) are rotatably connected to the main shell (31) via a rotating shaft (33); Under the driving action of the driving component, the plurality of blocking rollers (32) can rotate synchronously; The cross section of the blocking roller (32) is an elliptical structure, and the blocking roller (32) has two working positions; When the blocking roller (32) is in the first working position, the long axis of the blocking roller (32) is in a horizontal state, and a plurality of the blocking rollers (32) form a blockage for the blanking channel of the main shell (31); When the blocking roller (32) is in the second working position, the short axis of the blocking roller (32) is in a horizontal state, and the material in the tank body (1) can fall into the cooling water jacket (2) below through the material dropping channel.

2. The calcining furnace blanking isolation valve according to claim 1, characterized in that: The driving component includes a driving shaft (341) rotatably arranged outside the main housing (31), and both ends of the driving shaft (341) are connected to the rotating shaft (33) through a transmission mechanism. The main housing (31) is provided with a driving motor (342) for driving the driving shaft (341) to rotate.

3. The calcining furnace blanking isolation valve according to claim 2, characterized in that: The transmission mechanism comprises a driving sprocket (343) arranged on the driving shaft (341) and a driven sprocket (344) arranged on the rotating shaft (33), adjacent driven sprockets (344) are connected by a first chain (345), and the driving sprocket (343) is connected to the driven sprocket (344) close to the driving shaft (341) by a second chain (346).

4. The calcining furnace blanking isolation valve according to claim 1, characterized in that: The blocking roller (32) comprises an outer cylinder (321) and an inner cylinder (322) arranged coaxially, a plurality of connecting ribs (323) are provided between the inner cylinder (322) and the outer cylinder (321), and the plurality of connecting ribs (323) are arranged radially around the inner cylinder (322).

5. The calcining furnace blanking isolation valve according to claim 4, characterized in that: The rotating shaft (33) is arranged in the inner cylinder (322), and a limiting structure is provided between the rotating shaft (33) and the inner cylinder (322), so that the blocking roller (32) can rotate synchronously with the rotating shaft (33).

6. The calcining furnace blanking isolation valve according to claim 5, characterized in that: The inner hole cross section of the inner cylinder (322) is a regular hexagonal structure.

7. The calcining furnace blanking isolation valve according to claim 4, characterized in that: End plates (324) are respectively provided at both ends of the outer cylinder (321) in the outer cylinder (321), and the end plates (324) are fixedly connected to the connecting ribs (323) in a detachable manner. The end plates (324) are provided with through holes (3241) for accommodating the inner cylinder (322).

8. The calcining furnace blanking isolation valve according to claim 4, characterized in that: The inner cylinder (322) is provided with a set screw (35) for tightening the rotating shaft (33), and the outer cylinder (321) is provided with a avoidance hole (3211) coaxially arranged with the set screw (35).

9. The calcining furnace blanking isolation valve according to claim 1, characterized in that: The upper end of the main housing (31) is provided with a first flange plate (313), and the lower end of the main housing (31) is provided with a second flange plate (314).

10. A calcining furnace, characterized in that: The invention comprises a calcining furnace discharge isolation valve as described in any one of claims 1 to 9.

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