Slag breaking machine

Abstract

The invention discloses a slag breaking machine, and belongs to the technical field of gasification furnace systems. The slag breaking machine comprises a slag breaking shell, a slag inlet is formed in the top of the slag breaking shell, and a slag outlet is formed in the bottom of the slag breaking shell; the rotating conical disc is rotatably connected to the inner side of the slag breaking shell, the upper surface of the rotating conical disc is a conical surface, and a gap is formed between the peripheral surface of the rotating conical disc and the inner wall of the slag breaking shell; a plurality of first scraping teeth arranged in the circumferential direction are arranged on the conical surface of the rotating conical disc, a plurality of second scraping teeth arranged in the circumferential direction are arranged on the inner wall of the slag breaking shell, and the first scraping teeth and the second scraping teeth are meshed with each other. Bulk furnace slag can be crushed, and the problem of slag blockage is solved.

Description

Technical Field

[0001] The invention relates to the technical field of gasifier systems, and in particular to a slag breaker used in a gasifier system. Background Art

[0002] When the raw materials or furnace conditions fluctuate, the gasifier will produce large pieces of slag, especially long and large pieces of slag. Therefore, the gasifier is equipped with a slag breaker between the bottom of the slag outlet of the waste boiler section and the lock bucket. Its function is to break up the extra-large slag or the fallen refractory bricks to ensure that the gasifier can discharge slag smoothly and operate continuously for a long time. The guide plate of the traditional slag breaker is in a closed shape, which often causes the long and large pieces of slag to bridge at the guide plate of the slag breaker. The moving knife driven by the radial shaft of the shell cannot contact the slag, and the large pieces of slag become the support point. As the ash and slag continue to accumulate, slag blockage occurs, and the furnace must be stopped for maintenance. Summary of the invention

[0003] The technical problem to be solved by the present invention is the problem of slag blockage caused by unreasonable structure of existing slag breakers. To this end, the present invention proposes a slag breakers capable of breaking large pieces of slag.

[0004] In view of the above technical problems, the present invention provides the following technical solutions:

[0005] A slag breaker comprises: a slag breaking shell, the top of which forms a slag inlet, and the bottom of which forms a slag outlet; a rotating cone disk, rotatably connected to the inner side of the slag breaking shell, the upper surface of the rotating cone disk being a conical surface, and a gap being provided between the outer peripheral surface of the rotating cone disk and the inner wall of the slag breaking shell; a plurality of first scraping teeth arranged in the circumferential direction are provided on the conical surface of the rotating cone disk, and a plurality of second scraping teeth arranged in the circumferential direction are provided on the inner wall of the slag breaking shell, and the first scraping teeth and the second scraping teeth are engaged with each other.

[0006] In some embodiments of the present invention, the slag breaking shell is an inverted conical shell.

[0007] In some embodiments of the present invention, a wear-resistant lining is installed on the inner side of the slag breaking shell, and the second scraping teeth are arranged on the wear-resistant lining.

[0008] In some embodiments of the present invention, the inner wall of the wear-resistant lining is provided with multiple conical surfaces from top to bottom, the cone angle of the lowest conical surface is less than 90 degrees, and the second scraping tooth is located on the lowest conical surface.

[0009] In some embodiments of the present invention, a first conical surface and a second conical surface are arranged on the upper surface of the rotating conical disk from top to bottom, the cone angle of the first conical surface is greater than the cone angle of the second conical surface, and the first scraping tooth is arranged on the second conical surface of the rotating conical disk.

[0010] In some embodiments of the present invention, the angle between the lowermost conical surface of the inner wall of the wear-resistant lining plate and the second conical surface of the rotating conical disk is between 30° and 60°.

[0011] In some embodiments of the present invention, a support frame is provided in the slag breaking shell, a mounting hole is provided on the support frame, and the rotating cone is connected to the mounting hole via a bearing.

[0012] In some embodiments of the present invention, a driving mechanism for driving the rotating cone disk to rotate is further included, wherein the driving mechanism includes a rotary power device and a transmission assembly, wherein the transmission assembly includes a driving gear fixedly connected to the output shaft of the rotary power device, and a gear ring fixedly connected to the rotating cone disk, wherein the driving gear is meshingly connected to the gear ring.

[0013] In some embodiments of the present invention, it also includes a shaft sleeve pipe passing through the slag crushing shell, the rotary power device is installed on the lower side of the shaft sleeve pipe, and the output shaft of the rotary power device extends along the shaft sleeve pipe to the inner side of the shell and is connected to the driving gear.

[0014] In some embodiments of the present invention, the rotary power device is a rotary electric motor or a hydraulic motor.

[0015] The technical solution of the present invention has the following technical effects compared with the prior art:

[0016] The slag crusher provided by the present invention adopts a vertical slag discharge structure and a rotating cone disk rotatably connected to the slag crushing shell to guide the slag on the upper side thereof. Slag of larger size can also slide down to the slag discharge gap under the guidance of the conical surface of the rotating cone disk, and then the first scraper and the second scraper located therebetween engage with each other to achieve the crushing of the large slag, thus completely solving the problem of slag accumulation and slag blocking at the guide plate of the existing slag crusher. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which will help to understand the objects and advantages of the present invention, wherein:

[0018] Figure 1 A schematic structural diagram of a specific implementation mode of the slag breaker provided by the present invention;

[0019] Figure 2 A cross-sectional view of a specific embodiment of the slag breaker provided by the present invention;

[0020] Figure 3 An exploded view of a specific implementation of the transmission assembly in the slag breaker provided by the present invention. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 direct connection, or an indirect connection 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.

[0024] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] like Figure 1 , Figure 2 The figure shows a specific implementation of the slag crusher provided by the present invention, which can be installed between the bottom of the lower slag outlet of the waste boiler section of the gasifier and the lock bucket to crush the waste slag.

[0026] The slag crusher comprises a slag crushing shell 10 and a rotating cone disk 20 rotatably connected to the inner side of the slag crushing shell 10, wherein a slag inlet 10a is formed at the top of the slag crushing shell 10, and a slag outlet 10b is formed at the bottom of the slag crushing shell 10; the upper surface of the rotating cone disk 20 is a conical surface, and the slag entering from the slag inlet 10a of the slag crushing shell 10 slides down to the lower area of ​​the conical surface under the guidance of the conical surface of the rotating cone disk 20, and there is a gap between the outer peripheral surface of the rotating cone disk 20 and the inner wall of the slag crushing shell 10, specifically, the gap is not greater than 50mm, and the slag falls to the slag outlet 10b along the gap between the two; a plurality of first scraping teeth 21 arranged in the circumferential direction are arranged on the conical surface of the rotating cone disk 20, and a plurality of second scraping teeth 11 arranged in the circumferential direction are arranged on the inner wall of the slag crushing shell 10, and the first scraping teeth 21 and the second scraping teeth 11 are engaged with each other to form a slag crushing structure to crush the large slag located between the two.

[0027] The above-mentioned slag crusher adopts a vertical slag discharge structure and a rotating cone disk 20 rotatably connected to the slag crushing shell 10 to guide the slag on its upper side. Slag of larger size can also slide down to the slag discharge gap under the guidance of the conical surface of the rotating cone disk 20, and then the first scraper 21 and the second scraper 11 located therebetween engage with each other to achieve the crushing of large slag, which completely solves the problem of slag accumulation and slag blocking at the guide plate of the existing slag crusher.

[0028] Specifically, in an optional embodiment, the slag breaking shell 10 is an inverted conical shell. The inverted conical shell makes the slag inlet 10a larger and the slag outlet 10b smaller, which is suitable for introducing large slag from the slag inlet 10a side to the slag breaking area, and the slag after slag breaking falls to the slag outlet 10b under the guidance of the gradually shrinking cone surface of the slag breaking shell 10, which is convenient for slag collection and avoids the problem of slag fly ash pollution caused by the slag outlet 10b being too large.

[0029] Specifically, in an optional embodiment, a wear-resistant lining plate 70 is installed inside the slag-breaking shell 10. The wear-resistant lining plate 70 is made of a material with good wear resistance, for example, it is made of cast steel or has a wear-resistant alloy welded on the surface. The second scraper 11 is arranged on the wear-resistant lining plate 70. By setting the wear-resistant lining plate 70 as a wearing part and replacing it regularly, the service life of the slag-breaking shell 10 can be improved. More specifically, the wear-resistant lining plate 70 is connected to the upper end surface of the slag-breaking shell 10 through fastening components arranged in the circumferential direction. A part of the wear-resistant lining plate 70 is embedded in the inner wall of the slag-breaking shell 10, and another part of the wear-resistant lining plate 70 is located on the upper side of the slag-breaking shell 10.

[0030] Specifically, in an optional embodiment, the inner wall of the wear-resistant lining 70 is provided with multiple conical surfaces from top to bottom, the cone angle of the conical surface located at the bottom is smaller than the cone angle of the slag breaking shell, and the second scraper 11 is located on the conical surface at the bottom. More specifically, the inner wall of the wear-resistant lining 70 is respectively a first conical section 70a and a second conical section 70b from top to bottom, the cone angle of the first conical section 70a is between 90° and 120°, the first conical section 70a of the wear-resistant lining 70 is provided with a plurality of first connecting holes evenly arranged in the circumferential direction, and the upper end surface of the slag breaking shell 10 is correspondingly provided with a second connecting hole, and the connection and fixation of the wear-resistant lining 70 and the slag breaking shell 10 are achieved by fastening screws penetrated through the first connecting hole and the second connecting hole. The cone angle of the second conical section 70b is smaller than the cone angle of the inner wall of the slag crushing shell 10, which can reduce the matching interval between the second scraping teeth 11 located thereon and the first scraping teeth 21 on the rotating cone disk 20, thereby facilitating the engagement of the first scraping teeth 21 and the second scraping teeth 11 to achieve slag crushing.

[0031] Specifically, in an optional embodiment, the upper surface of the rotating cone disk 20 is provided with a first conical surface 20a and a second conical surface 20b from top to bottom, and the cone angle of the first conical surface 20a is greater than the cone angle of the second conical surface 20b. The first scraper 21 is provided on the second conical surface 20b of the rotating cone disk 20. More specifically, the cone angle of the first conical surface 20a is 120°-150°, and the cone angle of the second conical surface 20b is 90°-120°. In this way, when the slag falls onto the first conical surface 20a of the rotating cone disk 20, it can slide onto the second conical surface 20b with a certain buffer, avoiding the problem that the sliding speed is too fast, resulting in excessive collision force of the slag on the wear-resistant lining 70, which is not conducive to crushing.

[0032] Specifically, in an optional embodiment, an angle of 30°-60° is formed between the second conical section 70b of the inner wall of the wear-resistant lining 70 and the second conical surface 20b of the rotating cone disk 20. The above angle range is conducive to clamping the slag between the two conical surfaces and achieving rapid crushing of the slag.

[0033] Specifically, in an optional embodiment, the first scraping teeth 21 are formed as first arc-shaped convex ribs protruding along the upper surface of the second conical surface 22 of the rotating cone disk 20, the first arc-shaped convex ribs are extended from the lower area to the upper area of ​​the second conical surface, and a plurality of first scraping teeth 21 are evenly arranged along the circumferential direction. The second scraping teeth 11 are formed as second arc-shaped convex ribs protruding along the inner surface of the wear-resistant lining plate 70, the second arc-shaped convex ribs are extended from the lower area to the upper area of ​​the wear-resistant lining plate 70, and a plurality of second scraping teeth 11 are evenly arranged along the circumferential direction. When the first scraping teeth 21 and the second scraping teeth 11 are engaged, the upper arc-shaped curved areas of the first scraping teeth 21 and the second scraping teeth 11 are used to limit the position of the slag, so as to avoid the problem of low crushing efficiency caused by the slag rotating along the circumferential direction with the rotating cone disk 20.

[0034] Specifically, in an optional embodiment, a support frame 30 is provided in the slag breaking shell 10, the support frame 30 is located at the lower side of the rotating cone 20, a bearing seat is provided at the center of the support frame 30, and the rotating cone 20 is connected to the bearing seat through a bearing 40. More specifically, the support frame 30 includes a plurality of support arms symmetrically arranged along the circumferential direction, and a support body located on the upper side of the support arms, and the rotating cone 20 is rotatably connected to the bearing seat of the support body through the bearing 40.

[0035] Specifically, in an optional embodiment, the slag breaker further includes a driving mechanism, which is used to drive the rotating cone 20 to rotate relative to the slag breaker shell 10. It includes a rotating power device (not shown in the figure) and a transmission assembly 50, such as Figure 3 As shown, the transmission assembly 50 includes a driving gear 51 fixedly connected to the output shaft of the rotary power device, and a gear ring 52 fixedly connected to the rotating cone disk 20 , and the driving gear 51 is meshingly connected to the gear ring 52 .

[0036] In order to make the ring gear rotate smoothly, in an optional embodiment, two or more driving gears 51 are symmetrically arranged, and the multiple driving gears 51 can be driven to rotate by multiple rotating power devices respectively, or the multiple driving gears 51 are connected by a synchronous belt and driven to rotate by a rotating power device.

[0037] Specifically, the slag breaking shell 10 is further provided with a shaft sleeve pipe 60 penetrating inside and outside thereof, the shaft sleeve pipe 60 is extended in the vertical direction, the rotary power device is installed at the bottom of the shaft sleeve pipe 60, and the output shaft of the rotary power device extends along the shaft sleeve pipe 60 to the inside of the shell and is connected to the driving gear 51. A stuffing box and a sealing water ring are provided between the end of the shaft sleeve pipe 60 and the driving shaft.

[0038] More specifically, the rotary power device is a rotary motor or a hydraulic motor, and the power output can realize the functions of forward rotation and reverse rotation.

[0039] The working principle of the above-mentioned slag crusher is as follows: the rotational power provided by the driving mechanism drives the driving gear 51 through the driving shaft, and the driving gear 51 engages with the gear ring 52 to drive the rotating cone disk 20 to rotate. The slag falling from the slag inlet onto the rotating cone disk 20 slides along the rotating cone disk 20 to the gap between the wear-resistant bushing and the rotating cone disk 20. Slag smaller than 50 mm passes through the gap and falls to the slag outlet 10b. Large pieces of slag are gradually crushed by the shear force between the first scraping teeth 21 and the second scraping teeth 11 between the wear-resistant bushing and the rotating cone disk 20, and then fall from the gap between the wear-resistant lining plate 70 and the wear-resistant cone disk to the slag outlet 10b for discharge.

[0040] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, the obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A slag breaker, characterized in that: include: A slag-breaking shell, wherein the top of the slag-breaking shell forms a slag inlet, and the bottom of the slag-breaking shell forms a slag outlet; A rotating cone disk is rotatably connected to the inner side of the slag breaking shell, the upper surface of the rotating cone disk is a conical surface, and there is a gap between the outer peripheral surface of the rotating cone disk and the inner wall of the slag breaking shell; A plurality of first scraping teeth arranged in the circumferential direction are arranged on the conical surface of the rotating conical disk, and a plurality of second scraping teeth arranged in the circumferential direction are arranged on the inner wall of the slag breaking shell, and the first scraping teeth and the second scraping teeth are engaged with each other.

2. A slag breaker according to claim 1, characterized in that: The slag breaking shell is an inverted cone-shaped shell.

3. A slag breaker according to claim 2, characterized in that: A wear-resistant lining is installed inside the slag breaking shell, and the second scraping teeth are arranged on the wear-resistant lining.

4. A slag breaker according to claim 3, characterized in that: The inner wall of the wear-resistant lining is provided with multiple conical surfaces from top to bottom, the cone angle of the conical surface at the bottom is smaller than the cone angle of the inner wall of the slag breaking shell, and the second scraper is located on the conical surface at the bottom.

5. A slag breaker according to claim 4, characterized in that: The upper surface of the rotating cone disk is provided with a first conical surface and a second conical surface from top to bottom, the cone angle of the first conical surface is greater than the cone angle of the second conical surface, and the first scraping tooth is provided on the second conical surface of the rotating cone disk.

6. A slag breaker according to claim 5, characterized in that: The angle between the lowermost conical surface of the inner wall of the wear-resistant lining plate and the second conical surface of the rotating conical disk is between 30° and 60°.

7. A slag breaker according to claim 1, characterized in that: A support frame is arranged in the slag breaking shell, a bearing seat is arranged on the support frame, and the rotating cone disk is connected to the bearing seat through a bearing.

8. A slag breaker according to claim 1, characterized in that: It also includes a driving mechanism for driving the rotating cone disk to rotate, the driving mechanism includes a rotating power device and a transmission assembly, the transmission assembly includes a driving gear fixedly connected to the output shaft of the rotating power device, and a gear ring fixedly connected to the rotating cone disk, the driving gear is meshed with the gear ring.

9. A slag breaker according to claim 8, characterized in that: It also includes a shaft sleeve pipe that passes through the slag breaking shell, the rotary power device is installed on the lower side of the shaft sleeve pipe, and the output shaft of the rotary power device extends along the shaft sleeve pipe to the inner side of the shell and is connected to the driving gear.

10. A slag breaker according to claim 8 or 9, characterized in that: The rotary power device is a rotary electric motor or a hydraulic motor.

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