Self-lubricating supporting wheel slag removing and cooling machine

Abstract

The utility model discloses a slag removing and cooling machine with self-lubricating supporting wheels. The slag removing and cooling machine comprises a roller, a driving assembly, a cleaning assembly and the multiple supporting wheels. A driving assembly is arranged on the outer side wall of the roller; a plurality of riding wheels are arranged below the roller; the roller is in rolling contact with the riding wheel; comprising a cleaning assembly; a cleaning assembly is arranged on at least one riding wheel; the cleaning assembly comprises a supporting rod, a guide groove and a graphite plate; the graphite plate is inserted into the guide groove in a sliding manner; the supporting rods are arranged on the outer side wall of a riding wheel mounting seat of the riding wheel in pairs; the guide grooves are formed in the opposite side faces of the supporting rod. The graphite plate is arranged on the upper portion of the supporting wheel of the slag cooler, and the included angle between the graphite plate and the surface of the supporting wheel ranges from 50 degrees to 55 degrees, so that the surface of the supporting wheel is comprehensively cleaned and lubricated, a roller is prevented from greatly shaking in the using process, and the shutdown overhaul frequency is reduced. Meanwhile, the graphite plate is arranged to lubricate the surface of the riding wheel, solid impurities on the surface of the riding wheel fall off along with contact friction between the riding wheel and the graphite plate, and automatic cleaning is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of boiler production, in particular to a self-lubricating supporting wheel slag removal and slag cooler. BACKGROUND

[0002] The boiler slag cooler is used for cooling and solidifying the high-temperature slag discharged from the boiler. The slag is rapidly cooled to below the safe temperature in the roller through heat exchange, so as to achieve stable boiler bed pressure and maintain the thickness of the boiler combustion layer

[0003] In the existing boiler production process, each 220t / h circulating fluidized bed boiler is equipped with two boiler slag coolers. The water-cooled roller slag cooler includes a cylinder, a slag inlet box, a slag outlet box, a power transmission device, a supporting wheel, a blocking wheel and a rotary joint, such as the membrane wall roller slag cooler with multiple independent cooling cavities disclosed in CN201020616847.X.

[0004] During use, due to the poor on-site environment, the fly ash and slag of the boiler overflowed in the air and various impurities are easily adsorbed on the supporting wheel of the roller. In order to ensure normal production, frequent shutdown and cleaning cannot be performed. After various solid impurities are adhered to the supporting wheel, the continued operation will cause damage to the contact surface of the supporting wheel and the wheel set will be jammed. The continued operation of the slag cooler after the solid impurities are adhered will cause the frequency of equipment shaking to increase, and even cause the stoppage failure, which seriously affects the safe and stable operation of the boiler. With the increase of the amount of impurities adhered, the boiler slag discharge cannot be cooled in time, which affects the normal slag discharge of the boiler.

[0005] The information disclosed in the background section is only intended to increase the understanding of the general background of the present application and should not be considered as admitting or implying that the information constitutes prior art that is known to those of ordinary skill in the art. CONTENT OF THE PRESENT INVENTION

[0006] The present application provides a self-lubricating supporting wheel slag removal and slag cooler, which can clean and lubricate the supporting wheel while the roller is rotating, ensure the normal movement of the roller, and reduce the number of large-scale shaking and shutdown maintenance.

[0007] The present application provides a self-lubricating supporting wheel slag removal and slag cooler, which includes a roller, a driving assembly, a cleaning assembly and multiple supporting wheels. The driving assembly is arranged on the outer side wall of the roller. The multiple supporting wheels are arranged below the roller. The roller is in rolling contact with the supporting wheels.

[0008] The cleaning assembly is arranged on at least one supporting wheel.

[0009] The cleaning assembly includes a support rod, a guide groove and a graphite plate. The graphite plate is slidably inserted into the guide groove. The support rod is arranged in pairs on the outer side wall of the supporting wheel mounting seat. The guide groove is mounted on the opposite side surface of the support rod.

[0010] The graphite plate is in rolling contact with the surface of the supporting wheel at an angle of 50-55 degrees.

[0011] Preferably, the graphite plate is inserted into the groove.

[0012] The supporting rod and the mounting plate are detachably connected through the mounting bolt assembly.

[0013] Preferably, the guide groove is in supporting contact with the outer sidewall of the middle part of the graphite plate.

[0014] Preferably, the rolling ring is symmetrically arranged in pairs on the outer wall of the roller at intervals.

[0015] Preferably, the driving assembly comprises a large chain wheel and a driving motor.

[0016] Preferably, the feeding assembly is arranged on one end of the roller, and the discharging assembly is arranged on the other end of the roller.

[0017] Preferably, the feeding assembly comprises a high-temperature ash valve, a feeding hopper, a feeding pipe and a feeding main pipe.

[0018] The feeding hopper is arranged on the extension end of the feeding pipe.

[0019] Preferably, the feeding assembly comprises a slag poking pipe and an alloy steel sealing ring.

[0020] The alloy steel sealing ring is sleeved on the outer sidewall of the feeding pipe and is arranged on the feeding end of the roller.

[0021] The beneficial effects that can be produced by the present application include:

[0022] 1) The self-lubricating supporting wheel slag removal cold slag machine provided by the present application realizes comprehensive cleaning and lubrication of the surface of the supporting wheel by arranging a graphite plate on the upper part of the supporting wheel of the cold slag machine, the graphite plate is at an angle of 50-55 degrees with the surface of the supporting wheel, avoids large-scale shaking of the roller during use, and reduces the number of shutdown maintenance. At the same time, by arranging the graphite plate to lubricate the surface of the supporting wheel, solid impurities on the surface of the supporting wheel are removed through the contact friction between the supporting wheel and the graphite plate, and automatic cleaning is realized. Thus, the service life of the supporting wheel is prolonged, the maintenance frequency of the cooling machine is effectively reduced, and normal production is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1The self-lubricating roller slag removal and slag cooling machine in at least one embodiment provided in the application is shown in a schematic view, and only the cleaning assembly arranged on the roller on one side is shown, and the cleaning assembly can be installed on the corresponding roller as needed;

[0024] Figure 2 For Figure 1 A C-C cross-sectional structure schematic view is shown in the figure.

[0025] Figure 3 For Figure 2 A partial enlarged structure schematic view is shown in the figure.

[0026] Legend:

[0027] Supporting rod 1, guide groove 11, graphite plate 121, mounting plate 112, groove body 111, mounting bolt assembly 113, roller 22, roller 2, large sprocket 221, roller mounting seat 21, sprocket cover 222, drive motor 223, rolling ring 224, discharger 225, dust suction pipe 226, circulating water inlet metal hose 227, circulating water outlet pipe 228, slag poking pipe 211, high-temperature ash slag valve 212, feed hopper 213, alloy steel sealing ring 214. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0030] Technical means not described in detail in the present application and not used to solve the technical problems of the present application are set according to common knowledge in the art, and various common knowledge setting methods can be implemented.

[0031] Reference Figures 1-3The self-lubricating roller slag removal and slag cooler provided by the application comprises a supporting rod 1, a guide groove 11 and a graphite plate 121; the supporting rod 1 is symmetrically arranged in pairs on the outer side wall of a roller mounting seat 21; the guide groove 11 is arranged on the extending end of the supporting rod 1 opposite to the inner side wall; the guide groove 11 comprises a mounting plate 112, a groove body 111 and a mounting bolt assembly 113; the groove body 111 is arranged on one side wall of the mounting plate 112; the mounting plate 112 is detachably connected with the supporting rod 1 through the mounting bolt assembly 113; and the mounting angle of the mounting plate 112 relative to the supporting rod 1 is adjusted by arranging only one mounting bolt assembly 113; after the graphite plate 121 inserted into the groove body 111 is adjusted to a preset angle with the roller 2, the angle of the guide groove 11 relative to the supporting rod 1 is locked through the mounting bolt assembly 113, so that the angle is fixed.

[0032] After installation, one side edge of the graphite plate 121 is in rolling contact with the surface of the roller 2; by arranging the angle of the guide groove 11 relative to the supporting rod 1 to be 30-45°, the graphite plate 121 is arranged to form an included angle of 50-55° with the surface of the roller 2; by arranging the included angle, the graphite plate 121 can automatically move downward and keep rolling contact with the roller 2 under the action of gravity after the wear and tear is reduced, so that the surface of the roller 2 is lubricated while the various solid impurities and waste on the surface of the roller 2 are scraped off, the running stability of the roller 22 is maintained, and shutdown for maintenance is avoided.

[0033] In a specific embodiment, the outer side wall of the guide groove 11 is in supporting contact with the graphite plate 121; by arranging in this way, the contact area of the graphite plate 121 and the guide groove 11 is reduced, so that the graphite plate 121 can automatically slide downward under the action of gravity and keep continuous contact with the roller 2 during production.

[0034] In a specific embodiment, it comprises a roller 22 and a rolling ring 224; the rolling ring 224 is symmetrically arranged in pairs on the outer wall of the roller 22 at intervals; the roller 2 is arranged in pairs on the mounting seat opposite to the rolling ring 224; the above-mentioned cleaning assembly is arranged on each roller 2, so that the impurities on the surface of each roller 2 are effectively removed and lubricated.

[0035] In a specific embodiment, a large sprocket 221 is arranged on the outer wall of the middle part of the roller 22; the large sprocket 221 is drivingly connected with a driving motor 223 arranged outside the roller 22; the driving motor 223 drives the large sprocket 221 to drive the roller 22 to rotate; a sprocket cover 222 can be arranged outside the large sprocket 221 as needed to protect the large sprocket 221; the size of the large sprocket 221 is opposite to that of the existing small sprocket, and the large sprocket 221 is used to determine the roller 22.

[0036] In a specific embodiment, a feeding assembly is arranged on one end of the roller 22; an outlet assembly is arranged on the other end of the roller 22.

[0037] In a specific embodiment, the feeding assembly comprises: a high-temperature ash residue valve 212, a feeding hopper 213, a feeding pipe, and a feeding main pipe; one end of the feeding pipe is connected to the feeding end of the roller 22, and the other end extends out of the roller 22; the feeding hopper 213 is arranged on the extending end of the feeding pipe; the feeding main pipe is inserted into the top of the feeding hopper 213, and the cooled slag is fed into the roller 22 through the feeding main pipe. In order to control the feeding, the high-temperature ash residue valve 212 is arranged on the feeding main pipe.

[0038] In a specific embodiment, the feeding assembly comprises: a slag poking pipe 211 and an alloy steel sealing ring 214; the slag poking pipe 211 is arranged on the side wall of the feeding hopper 213, which facilitates the operator to dredge according to the discharging condition and avoids plugging. The slag poking pipe 211 is opened as needed and closed in normal times. The alloy steel sealing ring 214 is sleeved on the outer side wall of the feeding pipe and is installed on the feeding end of the roller 22, so as to realize the sealing of the feeding end of the roller 22 and avoid environmental pollution caused by slag leakage.

[0039] In a specific embodiment, the discharging assembly comprises: a discharger 225; the discharger 225 is arranged on the discharging end of the roller 22, and the discharging port is arranged on the bottom of the discharger 225 for discharging. The specific structure of the discharger 225 is arranged according to the upper part of the cooling machine in the art, and will not be repeated here.

[0040] In a specific embodiment, the discharging assembly comprises: a dust suction pipe 226; the dust suction pipe 226 is arranged on the outer side wall above the discharger 225 and is opened as needed for dust removal operation of the discharger 225.

[0041] In a specific embodiment, the cooling machine comprises: a circulating water inlet metal hose 227 and a circulating water outlet pipe 228; the circulating water inlet metal hose 227 and the circulating water outlet pipe 228 are arranged on the outer side of the discharger 225 and are respectively connected to the circulating water inlet and outlet of the heat exchange assembly inside the roller 22, which are used to provide circulating heat exchange medium for the heat exchanger of the roller 22; the specific structure of the heat exchanger is arranged according to the upper part of the cooling machine in the art, and will not be repeated here.

[0042] Embodiment

[0043] The above technical innovation is applied to the boiler slag cooler of the power station of Yunnan Yuntian Petrochemical Co., Ltd.

[0044] Before the transformation: the idler wheels of the slag cooler were severely damaged, and 1-2 sets of idler wheels needed to be replaced every 140 days of operation of one boiler; meanwhile, the slag cooler often vibrated, jammed, and even stopped running in severe cases.

[0045] After the transformation: the graphene automatic lubrication and cleaning device for idler wheels was installed on the slag coolers of three boilers in March 2021, and the slag coolers have been continuously running for 26280 hours without replacing the idler wheels, and no fault of the slag cooler caused by the idler wheels has occurred.

[0046] Conclusion: Through the technical innovation of the cold slag machine, the service life of the roller is improved, and the operation reliability of the cold slag machine is significantly improved.

[0047] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A self-lubricating roller slag removal and slag cooler, comprising: The drum (22), the driving assembly, the cleaning assembly, and the plurality of supporting wheels (2); the driving assembly is arranged on the outer side wall of the drum (22); The plurality of supporting wheels (2) are arranged below the drum (22); the drum (22) is in rolling contact with the supporting wheels (2); The cleaning assembly is arranged on at least one supporting wheel (2). The cleaning assembly comprises a supporting rod (1), a guide groove (11), and a graphite plate (121); the graphite plate (121) is slidably inserted into the guide groove (11); the supporting rod (1) is arranged in pairs on the outer side wall of a supporting wheel mounting seat (21) of the supporting wheel (2); and the guide groove (11) is mounted on the opposite side of the supporting rod (1). The graphite plate (121) is in rolling contact with the surface of the supporting wheel (2) at an angle of 50°-55°.

2. The self-lubricating roller slag extractor according to claim 1, characterized in that, The installation plate (112), the groove body (111), and the mounting bolt assembly (113); the groove body (111) is arranged on the side wall of the installation plate (112); and the graphite plate (121) is inserted into the groove body (111). The supporting rod (1) and the installation plate (112) are detachably connected through the mounting bolt assembly (113). The guide groove (11) is in supporting contact with the outer side wall of the middle part of the graphite plate (121).

3. The self-lubricating roller slag removal and slag cooler according to claim 1, characterized in that, The rolling ring (224); the rolling ring (224) is arranged in pairs on the outer wall of the drum (22) in a symmetrical and spaced manner; and the supporting wheel (2) is arranged opposite to the rolling ring (224).

4. The self-lubricating roller slag extractor slag cooler according to claim 1, characterized in that, The driving assembly comprises a large sprocket (221) and a driving motor (223); the large sprocket (221) is sleeved on the outer side wall of the middle part of the drum (22) and is drivingly connected with the driving motor (223); and the driving motor (223) is arranged outside the drum (22). The feeding assembly is arranged on one end of the drum (22); and the discharging assembly is arranged on the other end of the drum (22).

5. The self-lubricating roller slag extractor slag cooler according to claim 1, characterized in that, The feeding assembly comprises a high-temperature ash valve (212), a feeding hopper (213), a feeding pipe, and a feeding main pipe; one end of the feeding pipe is in communication with the feeding end of the drum (22), and the other end of the feeding pipe extends out of the drum (22); 6. The self-lubricating roller de-slagger according to claim 1, wherein, The feeding hopper (213) is arranged on the extended end of the feeding pipe; the feeding main pipe is inserted into the top of the feeding hopper (213); and the cooled furnace slag enters the drum (22) through the feeding main pipe.

7. The self-lubricating roller slag removal and slag granulator according to claim 6, characterized in that The feeding assembly comprises a slag poking pipe (211) and an alloy steel sealing ring (214); the slag poking pipe (211) is arranged on the side wall of the feeding hopper (213); The alloy steel sealing ring (214) is sleeved on the outer side wall of the feeding pipe and is mounted on the feeding end of the drum (22).

8. The self-lubricating roller slag removal and slag granulator according to claim 7, characterized in that ​ ​

Images