A blast furnace slag flushing water filter

Abstract

This utility model discloses a blast furnace slag flushing water filter, including a main body, end caps, an outlet pipe, and a filter drum. The main body includes a shell, an inlet pipe, a slag discharge pipe, and a base. One axial end of the shell is closed, and the other axial end is open. Both the inlet pipe and the slag discharge pipe are connected to the inner cavity of the shell. The base is relatively fixed to the shell. The end cap is detachably connected to the shell through the open end. The outlet pipe passes through the shell and the end cap. The filter drum is housed inside the shell and is rotatably fitted onto the outlet pipe. The outlet pipe acts as a main shaft, and the rotatable installation of the filter drum is achieved through the outlet pipe and bearing structure. The detachable end cap and shell facilitate the disassembly and reassembly of the internal structure of the shell. The modular design of the shell and end cap facilitates overall equipment maintenance and modular assembly, reducing assembly difficulty.

Description

Technical Field

[0001] This utility model relates to the field of filtration technology, and in particular to a blast furnace slag flushing water filter. Background Technology

[0002] Waste heat recovery technology for blast furnace slag flushing water is widely used in blast furnace smelting production systems. Waste heat filters are an important component of the waste heat recovery system for slag flushing water, filtering particulate suspended matter before the slag flushing water undergoes heat exchange.

[0003] The waste heat filter's casing is assembled using a single welded assembly method, which makes assembly difficult and hinders the filter's installation and subsequent repair work. Utility Model Content

[0004] To address the aforementioned problems, this application provides a blast furnace slag flushing water filter.

[0005] This application provides a blast furnace slag flushing water filter, including a main body, an end cover, a water outlet pipe, and a filter drum. The main body includes a shell, a water inlet pipe, a slag discharge pipe, and a base. One axial end of the shell is closed, and the other axial end is open. The water inlet pipe and the slag discharge pipe are both connected to the inner cavity of the shell. The base is fixed relative to the shell. The end cover is detachably connected to the shell at the open end. The water outlet pipe passes through the shell and the end cover. The filter drum is disposed inside the shell and is rotatably sleeved on the water outlet pipe.

[0006] In some embodiments, the end cap has a first opening, and a flange plate is connected to the end cap at the first opening. The flange plate includes a cylindrical part and a flange part. One axial end of the cylindrical part is connected to the end cap at the first opening, and the flange part is connected to the axial end of the cylindrical part away from the end cap. The water outlet pipe passes through the cylindrical part and the flange part.

[0007] In some embodiments, a sprocket is fixedly connected to one end of the filter roller near the end cover, the water outlet pipe passes through the sprocket, and a motor is installed on the end cover. The motor and the sprocket are connected by a chain drive.

[0008] In some embodiments, a mounting assembly is provided between the filter roller and the outlet pipe, the mounting assembly including:

[0009] The simulation disc and the sprocket are respectively fixedly connected to the outer sides of both axial ends of the filter drum;

[0010] Two orifice covers are provided opposite to each other, and the two orifice covers are respectively fixedly connected to the inner sides of the axial ends of the filter roller; and

[0011] There are two bushings, one of which is fixedly connected to the filter roller and located between the simulation disk and the adjacent hole cover, and the other bushing is fixedly connected to the filter roller and located between the sprocket and the adjacent hole cover.

[0012] The water outlet pipe is installed through the simulation plate, the hole cover, and the bushing.

[0013] In some implementations, the mounting components also include:

[0014] Multiple sealing rings are provided opposite to each other and are respectively installed between the sprocket and the shaft end of the adjacent bushing, between the simulation disk and the shaft end of the adjacent bushing, and between the hole cover and the shaft end of the adjacent bushing.

[0015] In some embodiments, both the water inlet pipe and the slag discharge pipe are distributed along the axis of the shell, and the water inlet pipe and the slag discharge pipe are connected side by side to the lower side of the shell.

[0016] In some implementations, the base is fixedly connected to the lower side of the water inlet pipe and the slag discharge pipe.

[0017] In some embodiments, the blast furnace slag flushing water filter further includes:

[0018] The backwash pipe is installed inside the outlet pipe. The backwash port of the backwash pipe is aligned with the inside of the filter drum. The backwash pipe is used to receive part of the hot flushing water output from the outlet pipe.

[0019] In some embodiments, the blast furnace slag flushing water filter further includes:

[0020] The sludge tank is fixedly installed inside the housing and located inside the filter drum and below the outlet pipe. The bottom side of the sludge tank has a second opening that is directly opposite the sludge inlet of the sludge discharge pipe.

[0021] The outlet pipe is equipped with radially distributed partitions to divide it into an outlet section and a return section. The backwash pipe passes through the outlet section. The blast furnace slag flushing water filter exchanges slag flushing water with the heat exchange device. The outlet section is connected to the hot water inlet of the heat exchange device, and the return section is connected to the cold water outlet of the heat exchange device. The return section has a return water port that is directly opposite the top opening of the slag water tank.

[0022] In some embodiments, the housing has an access hole, and the housing is fitted with an openable and closable cover over the access hole.

[0023] The beneficial effects of this application are as follows: A blast furnace slag flushing water filter is provided, comprising a main body, end caps, an outlet pipe, and a filter drum. The main body includes a shell, an inlet pipe, a slag discharge pipe, and a base. The shell is the primary external structure, with one axial end closed and the other axial end open. The end cap is detachably connected to the shell at the open end. The inlet pipe and slag discharge pipe are directly installed on the shell, and both are connected to the inner cavity of the shell. A mounting base is provided for the shell. The outlet pipe passes through the shell and the end cap. The filter drum is housed within the shell and rotatably fitted onto the outlet pipe. The outlet pipe acts as a main shaft. The rotatable installation of the filter drum is achieved through the outlet pipe in conjunction with a bearing structure. Through the above design, this application achieves detachability between the end cap and the shell, facilitating the disassembly and reassembly of the internal structure. The modular design of the shell and end cap facilitates overall equipment maintenance and modular assembly, reducing assembly difficulty. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model.

[0025] Figure 1 This application provides an overall structural schematic diagram of a blast furnace slag flushing water filter.

[0026] Figure 2 A schematic diagram of a partial cross-section of a blast furnace slag flushing water filter provided in this application;

[0027] Figure 3 A schematic diagram of the overall cross-section of a blast furnace slag flushing water filter provided in this application;

[0028] Figure 4 This is a schematic diagram of the end cover of a blast furnace slag flushing water filter provided in this application.

[0029] Attached diagram labels: 11-Shell, 12-Inlet pipe, 13-Slag discharge pipe, 14-Base, 15-Inspection hole, 20-End cover, 21-Flange plate, 211-Cylinder section, 212-Flange section, 30-Outlet pipe, 31-Outlet section, 32-Return section, 40-Filter drum, 41-Sprocket, 42-Simulation disc, 43-Hole cover, 44-Shaft sleeve, 45-Sealing ring, 50-Motor, 60-Backwash pipe, 70-Slag-water tank. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0031] Furthermore, reference numerals and / or reference letters may be repeated in different examples in this application. Such repetition is for simplification and clarity purposes and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0032] Please refer to Figure 1 and Figure 3 This application provides a blast furnace slag flushing water filter, including a main body, an end cover 20, a water outlet pipe 30, and a filter drum 40. The main body includes a shell 11, a water inlet pipe 12, a slag discharge pipe 13, and a base 14. The shell 11 is the main external structure, with one axial end of the shell 11 closed and the other axial end of the shell 11 open. The end cover 20 is detachably connected to the shell 11 and is installed at the open position of the shell 11. The detachable connection between the end cover 20 and the shell 11 can be achieved by bolting.

[0033] The water inlet pipe 12 and the slag discharge pipe 13 are directly installed on the shell 11. Both the water inlet pipe 12 and the slag discharge pipe 13 are connected to the shell 11 and are connected to the inner cavity of the shell 11. The filter residue in the shell 11 can be discharged to the slag discharge pipe 13, and the high-temperature flushing water enters the shell 11 through the water inlet pipe 12.

[0034] A mounting base 14 is provided for the housing 11. The base 14 is fixed relative to the housing 11 and provides stable support for the entire device. In some embodiments, please refer to... Figure 1 The water inlet pipe 12 and the slag discharge pipe 13 are both distributed along the axis of the housing 11, and are connected side by side to the lower side of the housing 11. In some embodiments, the base 14 is fixedly connected to the lower side of the water inlet pipe 12 and the slag discharge pipe 13.

[0035] Please refer to Figure 1 and Figure 3The outlet pipe 30 passes through the housing 11 and the end cap 20. The filter drum 40 is housed inside the housing 11 and is rotatably fitted onto the outlet pipe 30. The outlet pipe 30 acts as a main shaft, and the rotatable installation of the filter drum 40 is achieved through the outlet pipe 30 and the bearing structure. The high-temperature flushing water entering from the inlet pipe 12 is sent to the outside of the filter drum 40. Through the filtration action of the filter drum 40, filter residue is formed on the outside of the filter drum 40. The filtered flushing water enters the outlet pipe 30 inside the filter drum 40 and can be sent from the outlet pipe 30 to the heat exchange equipment for waste heat extraction.

[0036] The original filter housing 11 was integrally welded, making assembly difficult and hindering filter installation and subsequent repair work. This application, through the aforementioned design, achieves detachability between the end cover 20 and the housing 11. When overall maintenance of the blast furnace slag flushing water filter is required, the end cover 20 is removed, and the internal structure of the housing 11 is moved out. Due to its large size, the housing 11 is generally left in its original position. This application facilitates the disassembly and reassembly of the internal structure of the housing 11. The modular design of the housing 11 and end cover 20 facilitates overall equipment maintenance and enables modular assembly, reducing assembly difficulty.

[0037] In some implementation methods, please refer to the reference. Figure 1 and Figure 4 The end cap 20 has a first opening, and a flange plate 21 is connected to the end cap 20 at the first opening. The flange plate 21 includes a cylindrical portion 211 and a flange portion 212. One axial end of the cylindrical portion 211 is connected to the end cap 20 at the first opening, and the flange portion 212 is connected to the axial end of the cylindrical portion 211 away from the end cap 20. The water outlet pipe 30 passes through the cylindrical portion 211 and the flange portion 212. By adding the flange plate 21, the original sealing treatment between the end cap 20 and the water outlet pipe 30 is transferred to the sealing design between the flange plate 21 and the end cap 20. The flange plate 21 is used to connect with the water pipe. The sealing between the flange plate 21 and the end cap 20 can be achieved through the sealing performance of the flange connection. Alternatively, an additional sealing element can be provided between the flange plate 21 and the end cap 20.

[0038] In some implementation methods, please refer to the reference. Figure 1 , Figure 2 and Figure 4 A sprocket 41 is fixedly connected to one end of the filter drum 40 near the end cover 20. The water outlet pipe 30 passes through the sprocket 41. A motor 50 is installed on the end cover 20. The motor 50 and the sprocket 41 are connected by a chain drive. The chain drive has the characteristic of stable transmission, which makes the filter drum 40 rotate stably.

[0039] In some embodiments, an installation assembly is provided between the filter roller 40 and the outlet pipe 30; please refer to the relevant documentation. Figures 1 to 3The mounting components include a simulation disc 42, a hole cover 43, and a bushing 44. A water outlet pipe 30 passes through the simulation disc 42, the hole cover 43, and the bushing 44. The hole cover 43 has an opening for the water outlet pipe 30 to pass through. The simulation disc 42 and the sprocket 41 are respectively fixedly connected to the outer sides of both axial ends of the filter roller 40. Two hole covers 43 are provided opposite each other, and the two hole covers 43 are respectively fixedly connected to the inner sides of both axial ends of the filter roller 40. Two bushings 44 are provided opposite each other; one bushing 44 is fixedly connected to the filter roller 40 and located between the simulation disc 42 and the adjacent hole cover 43, and the other bushing 44 is fixedly connected to the filter roller 40 and located between the sprocket 41 and the adjacent hole cover 43. The sprocket 41 and a hole cover 43 cooperate to provide an installation space for a bushing 44, and the simulation disk 42 and another hole cover 43 cooperate to provide an installation space for another bushing 44. The bushing 44 is in the form of a T-shaped bushing 44, and the head of the T-shaped bushing 44 must be located on the outside of the axial end of the filter roller 40.

[0040] In some embodiments, the bushing 44 is a self-lubricating bushing 44. Compared with the original method of rotating the filter drum 40 by means of the filter roller bearing and the graphite of the main shaft, which has the disadvantages of poor lubrication, large wear and damage of the bearing, and short overall equipment life, this application uses a self-lubricating bushing 44 to support the rotatable connection between the filter drum 40 and the water outlet pipe 30, thereby extending the service life of the rotating parts.

[0041] In some implementation methods, please refer to Figure 2 and Figure 3 The mounting assembly also includes multiple sealing rings 45, which are respectively installed between the sprocket 41 and the shaft end of the adjacent bushing 44, between the simulation disk 42 and the shaft end of the adjacent bushing 44, and between the hole cover 43 and the shaft end of the adjacent bushing 44. The sealing rings 45 prevent flushing water from entering the mating surface between the bushing 44 and the outlet pipe 30, thus extending the service life of the bushing 44.

[0042] In some implementation methods, please refer to Figure 3 The blast furnace slag flushing water filter also includes a backwash pipe 60, which is installed inside the outlet pipe 30. The flushing port of the backwash pipe 60 is aligned with the inner side of the filter drum. The backwash pipe 60 is used to receive a portion of the hot slag flushing water output from the outlet pipe 30. Most of the high-temperature slag flushing water exiting the outlet pipe 30 is sent to the heat exchange equipment, while a small portion is led to the backwash pipe 60 by a pipeline. A power pump is installed on this pipeline to provide pumping capacity, allowing a small portion of the high-temperature slag flushing water to be sprayed out of the backwash pipe 60 at a higher pressure, flushing the filter drum 40 from the inside out and washing off the filter slag adhering to the surface of the filter screen of the filter drum 40.

[0043] In some implementation methods, please refer to Figure 3The blast furnace slag flushing water filter also includes a slag water tank 70, which is fixedly installed inside the housing 11 and located inside the filter drum 40 and below the water outlet pipe 30. The bottom side of the slag water tank 70 has a second opening that is directly opposite the slag inlet of the slag discharge pipe 13.

[0044] The outlet pipe 30 is provided with radially distributed partitions to divide the outlet pipe 30 into an outlet section 31 and a return section 32. The backwash pipe 60 passes through the outlet section 31. The blast furnace slag flushing water filter exchanges slag flushing water with the heat exchange device. The outlet section 31 is connected to the hot water inlet of the heat exchange device, and the return section 32 is connected to the cold water outlet of the heat exchange device. The return section 32 has a return water port that is directly opposite the top side opening of the slag water tank 70.

[0045] The relatively low-temperature flushing water, output from the cold water outlet of the heat exchanger after heat exchange, is led through a pipeline to the return water section 32 of the outlet pipe 30. This pipeline is equipped with a power pump to provide pumping capacity, allowing the relatively low-temperature flushing water to enter the slag water tank 70 at a higher pressure and exit from the tank. This flushing water washes the filter screen of the filter drum 40 outside the tank, and flushes away most of the filter residue, including most of the residue originally at the bottom of the space, directly into the slag discharge pipe 13. The slag water tank 70 and the outlet pipe 30 remain relatively stationary, while the filter drum 40 rotates relative to it. During this dynamic process, the slag water tank 70 can flush all circumferential surfaces of the filter drum 40. The slag water tank 70, in conjunction with the backwash pipe 60, enhances the flushing capacity of the filter drum 40 and establishes a proper water circulation path for the entire device.

[0046] In some implementation methods, please refer to Figure 1 The housing 11 has an inspection hole 15, and an openable and closable cover 43 is installed on the inspection hole 15. By adding the inspection hole 15, it is easier to handle daily faults, and it is more convenient for personnel to inspect and repair some minor problems, thereby improving the efficiency of equipment fault handling.

[0047] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0049] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A blast furnace slag flushing water filter, characterized by, include: The main body includes a shell, a water inlet pipe, a slag discharge pipe, and a base. One axial end of the shell is closed and the other axial end is open. The water inlet pipe and the slag discharge pipe are both connected to the inner cavity of the shell. The base is fixed relative to the shell. An end cap is detachably connected to the housing through the opening; The water outlet pipe passes through the housing and the end cap; and A filter roller is housed within the housing and is rotatably fitted onto the water outlet pipe.

2. The blast furnace slag flushing water filter as described in claim 1, characterized in that, The end cap has a first opening, and a flange plate is connected to the end cap at the first opening. The flange plate includes a cylindrical part and a flange part. One axial end of the cylindrical part is connected to the end cap at the first opening, and the flange part is connected to the axial end of the cylindrical part away from the end cap. The water outlet pipe passes through the cylindrical part and the flange part.

3. The blast furnace slag flushing water filter as described in claim 1, characterized in that, A sprocket is fixedly connected to one end of the filter roller near the end cover. The water outlet pipe passes through the sprocket. A motor is installed on the end cover. The motor and the sprocket are connected by a chain drive.

4. The filter according to claim 3, wherein An installation assembly is provided between the filter roller and the water outlet pipe, the installation assembly including: The simulation disc is fixedly connected to the outer sides of both axial ends of the filter drum, respectively, along with the sprocket. Two orifice covers are provided opposite to each other, and the two orifice covers are respectively fixedly connected to the inner sides of the axial ends of the filter roller; and Two bushings are provided opposite to each other. One bushing is fixedly connected to the filter roller and located between the simulation disk and the adjacent hole cover. The other bushing is fixedly connected to the filter roller and located between the sprocket and the adjacent hole cover. The water outlet pipe passes through the simulation disc, the hole cover, and the bushing.

5. The filter according to claim 4, wherein The installation components also include: Multiple sealing rings are provided opposite to each other and are respectively installed between the sprocket and the shaft end of the adjacent bushing, between the simulation disk and the shaft end of the adjacent bushing, and between the hole cover and the shaft end of the adjacent bushing.

6. The blast furnace slag flushing water filter as described in any one of claims 1-4, characterized in that, Both the water inlet pipe and the slag discharge pipe are distributed along the axis of the shell, and the water inlet pipe and the slag discharge pipe are connected side by side to the lower side of the shell.

7. The blast furnace slag flushing water filter as described in claim 6, characterized in that, The base is fixedly connected to the lower side of the water inlet pipe and the slag discharge pipe.

8. The filter according to claim 6, wherein The blast furnace slag flushing water filter also includes: A backwash pipe is installed inside the outlet pipe, with the backwash port aligned with the inside of the filter drum. The backwash pipe is used to receive a portion of the hot flushing water output from the outlet pipe.

9. The filter according to claim 8, wherein The blast furnace slag flushing water filter also includes: The sludge tank is fixedly installed inside the housing and located inside the filter drum and below the water outlet pipe. The bottom side of the sludge tank has a second opening that is directly opposite the sludge inlet of the sludge discharge pipe. The water outlet pipe is provided with radially distributed partitions to divide the water outlet pipe into a water outlet section and a water return section. The backwash pipe passes through the water outlet section. The blast furnace slag flushing water filter exchanges slag flushing water with the heat exchange device. The water outlet section is connected to the hot water inlet of the heat exchange device. The water return section is connected to the cold water outlet of the heat exchange device. The water return section has a water return port that is directly opposite the top opening of the slag water tank.

10. The blast furnace slag flushing water filter as described in claim 1, characterized in that, The housing has an inspection hole, and the housing is fitted with an openable and closable cover for the inspection hole.

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