Filtering and guiding device for slag in slag flushing water

Abstract

The utility model discloses a filtering and guiding device for slag in slag flushing water, which is arranged between a slag flushing water main pipeline and a pressure transmitter and comprises a filtering guide pipe, and a speed reduction coarse strainer, a slag blocking device and a slag filtering device which are positioned in the filtering guide pipe and are sequentially arranged along the filtering guide pipe, a speed reduction bin is formed in the filtering guide pipe between the speed reduction coarse filter and the slag stopping device, a slag settling chamber is formed in the filtering guide pipe between the slag stopping device and the slag filtering device, and a pressure taking bin is formed in the filtering guide pipe behind the slag filtering device; a first blow-down valve is arranged on the filter guide pipe at the speed reduction bin and close to the joint of the speed reduction coarse filter and the filter guide pipe, a second blow-down valve is arranged on the filter guide pipe at the slag settling chamber and close to the joint of the slag blocking device and the filter guide pipe, and a third blow-down valve is arranged on the filter guide pipe at the pressure taking bin and close to the joint of the slag blocking device and the filter guide pipe. And the blow-down valve III is close to the joint of the residue filter and the filter guide pipe. According to the utility model, large-particle water slag can be effectively prevented from entering the pressure transmitter, residual water slag is discharged through regular slag discharge, and the root valve and the pressure transmitter can be prevented from being blocked.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit technical field, in particular to a kind of filter guide device of slag in slag flushing water. BACKGROUND

[0002] The blast furnace slag water quenching process is the main method for treating blast furnace slag in ironworks in China at present, which uses circulating water to quench blast furnace slag through a slag flushing water system. The slag flushing water system in an ironworks generally comprises a blast furnace slag outlet, a water flushing slag channel, a sedimentation system, a filtration system, a water pool, a circulating water suction well and a pump house. The specific operation process is as follows: high-pressure circulating water from the circulating water pump in the pump house enters the blast furnace slag outlet to rapidly cool high-temperature liquid slag, the slag is broken and quenched into granulated slag, the slag-water mixture comes out of the blast furnace slag outlet, enters the sedimentation system and the filtration system through the water flushing slag channel, and slag-water separation is completed. The dewatered granulated slag is stored in the sedimentation tank of the sedimentation system and is removed by a sky crane or other slag removal equipment for external transportation and treatment. The separated slag flushing water enters the circulating water suction well through the water pool and is pressurized by the circulating water pump in the pump house to be sent to the blast furnace slag outlet for recycling.

[0003] Because the slag flushing water in an ironworks contains a large amount of slag, the root valve and pressure transmitter originally designed on the slag flushing water conveying pipeline often fail, which reduces the operation efficiency of the equipment and pipeline, increases the cost, and in serious cases, forces the blast furnace to stop production, causing serious economic losses. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a kind of filter guide device of slag in slag flushing water to solve the problems existing in prior art, which is equipped with self-designed and processed anti-blocking equipment and slag discharge valve in front of pressure transmitter, effectively blocks large-particle water slag from entering pressure transmitter, and removes residual water slag by regular slag discharge, avoids root valve and pressure transmitter from being blocked, and ensures that slag flushing water system in an ironworks can operate safely, stably and efficiently.

[0005] The utility model is implemented as follows: a kind of filter guide device of slag in slag flushing water, which is arranged between main pipeline and pressure transmitter, comprising filter guide pipe, and speed reducer coarse filter, slag blocking device and filter slag device arranged in filter guide pipe in sequence;Speed reducer coarse filter and slag blocking device form speed reducer bin in filter guide pipe, slag blocking device and filter slag device form slag sedimentation chamber in filter guide pipe, and filter slag device forms pressure taking bin in filter guide pipe;Discharge valve one is arranged on filter guide pipe at speed reducer bin, discharge valve one is close to the junction of speed reducer coarse filter and filter guide pipe, discharge valve two is arranged on filter guide pipe at slag sedimentation chamber, discharge valve two is close to the junction of slag blocking device and filter guide pipe, and discharge valve three is arranged on filter guide pipe at pressure taking bin, and discharge valve three is close to the junction of filter slag device and filter guide pipe.

[0006] Preferably, the speed reducer coarse filter is V-shaped structure, and the V-shaped angle is 30°.

[0007] Preferably, the slag resistor is circular arc structure, and the arc of the slag resistor protrudes towards the pressure transmitter side.

[0008] Preferably, the slag filter is circular arc structure, and the arc of the slag filter protrudes towards the main pipeline of the slag flushing water side.

[0009] Preferably, a plurality of speed reducer coarse filter holes are arranged on the speed reducer coarse filter, a plurality of slag resistor holes are arranged on the slag resistor, and a plurality of slag filter holes are arranged on the slag filter, and the diameters of the speed reducer coarse filter holes, the slag resistor holes and the slag filter holes gradually decrease.

[0010] Further preferably, the plurality of speed reducer coarse filter holes are arranged uniformly in the circumferential direction, the plurality of slag resistor holes are arranged uniformly in the circumferential direction, and the plurality of slag filter holes are arranged uniformly in the circumferential direction, and the arrangement positions of the speed reducer coarse filter holes, the slag resistor holes and the slag filter holes gradually approach the central axis of the filter guide pipe.

[0011] Preferably, the filter guide pipe is arranged at an angle of 90° with the main pipeline of the slag flushing water.

[0012] The utility model has the advantages and positive effects that:

[0013] The utility model discloses a filter guide device for slag in the main pipeline of the slag flushing water and the pressure transmitter, and a speed reducer coarse filter, a slag resistor and a slag filter are sequentially arranged in the filter guide pipe, and sewage valves are arranged after the speed reducer coarse filter, the slag resistor and the slag filter respectively, which can effectively prevent the root valve and the pressure transmitter from being blocked, prolong the service life of the pressure transmitter, avoid the distortion of the monitoring pressure value, the wrong judgment of the post personnel, the blockage of the slag groove and the influence on normal production. BRIEF DESCRIPTION OF DRAWINGS

[0014] The technical solutions of the embodiments of the present application will be further described in detail below with reference to the drawings, but it should be known that these drawings are only designed for the purpose of explanation, and thus do not limit the scope of the present application. In addition, unless specifically indicated, these drawings are only intended to conceptually illustrate the structural configuration described herein, and are not necessarily drawn to scale.

[0015] Figure 1 is the structural schematic diagram of the filter guide device for slag in the main pipeline of the slag flushing water provided by the utility model. In the drawing: 1, main pipeline of the slag flushing water;2, pressure transmitter;3, filter guide pipe;4, speed reducer coarse filter;4-1, speed reducer coarse filter hole;5, slag resistor;5-1, slag resistor hole;6, slag filter;6-1, slag filter hole;7, speed reducer bin;8, slag sedimentation chamber;9, pressure taking bin;10, sewage valve one;11, sewage valve two;12, sewage valve three;13, root valve. DETAILED DESCRIPTION

[0016] In order to further understand the inventive content, characteristics and effects of the present application, the following examples are given below in conjunction with the drawings.

[0017] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0018] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0019] Please refer to Figure 1 The embodiment of the present application provides a filter guide device for slag in slag flushing water, which is arranged between a main pipeline 1 of the slag flushing water and a pressure transmitter 2, and comprises a filter guide pipe 3, a speed reduction coarse filter 4, a slag blocking device 5 and a slag filter 6 arranged in the filter guide pipe 3 in sequence; a speed reduction bin 7 is formed in the filter guide pipe 3 between the speed reduction coarse filter 4 and the slag blocking device 5, a slag settling chamber 8 is formed in the filter guide pipe 3 between the slag blocking device 5 and the slag filter 6, and a pressure taking bin 9 is formed in the filter guide pipe 3 behind the slag filter 6; a blowdown valve I 10 is arranged on the filter guide pipe 3 at the speed reduction bin 7, the blowdown valve I 10 is close to the connection between the speed reduction coarse filter 4 and the filter guide pipe 3, a blowdown valve II 11 is arranged on the filter guide pipe 3 at the slag settling chamber 8, the blowdown valve II 11 is close to the connection between the slag blocking device 5 and the filter guide pipe 3, and a blowdown valve III 12 is arranged on the filter guide pipe 3 at the pressure taking bin 9, the blowdown valve III 12 is close to the connection between the slag filter 6 and the filter guide pipe 3.

[0020] As a preferred embodiment, the speed reduction coarse filter 4 is of V-shaped structure, and the V-shaped angle is 30°, so that the slag flushing water can be quickly reduced in speed.

[0021] As a preferred embodiment, the slag blocking device 5 is of circular arc structure, and the arc of the slag blocking device 5 protrudes towards the pressure transmitter 2 side, and the slag blocking device 5 cooperates with the speed reduction coarse filter 4 to make the slag flushing water reach the optimal speed reduction.

[0022] As a preferred embodiment, the filter residue 6 is a circular arc structure, the arc of the filter residue 6 protrudes towards the side of the deslagging water main pipeline 1, and the arc of the filter residue 6 is opposite to the arc of the slag blocking device 5, so that the deslagging water in the slag sedimentation chamber 8 is fully settled, and the fine water slag particles are blocked outside the pressure taking chamber 9 by the filter residue hole.

[0023] As a preferred embodiment, the speed reduction coarse filter 4 is provided with a plurality of speed reduction coarse filter holes 4-1, the slag blocking device 5 is provided with a plurality of slag blocking holes 5-1, and the filter residue 6 is provided with a plurality of filter residue holes 6-1, and the diameters of the speed reduction coarse filter holes 4-1, the slag blocking holes 5-1 and the filter residue holes 6-1 gradually decrease, so that the slag blocks and slag particles in the deslagging water are filtered out in stages.

[0024] As a preferred embodiment, the plurality of speed reduction coarse filter holes 4-1 are uniformly arranged in a circumferential direction, the plurality of slag blocking holes 5-1 are uniformly arranged in a circumferential direction, and the plurality of filter residue holes 6-1 are uniformly arranged in a circumferential direction, and the arrangement positions of the speed reduction coarse filter holes 4-1, the slag blocking holes 5-1 and the filter residue holes 6-1 gradually approach the central axis of the filter guide pipe 3, so that uniform and efficient filtration is ensured.

[0025] Preferably, the filter guide pipe 3 is arranged at an angle of 90° with the deslagging water main pipeline 1, so that the pressure detection of the pressure transmitter 2 is not affected.

[0026] In the embodiment, the pipe diameter of the filter guide pipe 3 is 80 mm, and the pipe wall thickness of the filter guide pipe 3 is 6 mm. The radius of the slag blocking device 5 is 40 mm, the radius of the filter residue 6 is 40 mm, four speed reduction coarse filter holes 4-1, four slag blocking holes 5-1 and four filter residue holes 6-1 are arranged respectively, the diameter of the speed reduction coarse filter hole 4-1 is 8 mm, the diameter of the slag blocking hole 5-1 is 6 mm, and the diameter of the filter residue hole 6-1 is 4 mm. The diameters of the blowdown valve one 10 and the blowdown valve two 11 are 25 mm, and the diameter of the blowdown valve three 12 is 20 mm.

[0027] The specific working process of the utility model is as follows:

[0028] The deslagging water first enters the speed reduction coarse filter 4, the liquid flow rate is reduced, and the slag blocks are filtered out, then the medium enters the speed reduction chamber 7 through the speed reduction coarse filter hole 4-1, enters the slag sedimentation chamber 8 through the slag blocking hole 5-1 of the slag blocking device 5, and then enters the pressure taking chamber 9 through the filter residue hole 6-1 of the filter residue 6, at this time, the fine water slag particles are blocked outside the pressure taking chamber 9 by the filter residue hole 6-1 and are deposited inside the slag sedimentation chamber 8, the water enters the pressure transmitter 2 through the root valve for measurement, and once there is more fine water slag in the slag sedimentation chamber 8, it can be discharged through the blowdown valve.

[0029] In conclusion, the utility model discloses a filter guide device is set between the main pipeline of the slag flushing water 1 and pressure transmitter 2, and the speed reducer coarse filter 4, the slag blocking device 5, the slag filter 6 are set in the filter guide pipe 3 in proper order, and the blowdown valve is set respectively after the speed reducer coarse filter 4, the slag blocking device 5, the slag filter 6, can effectively prevent the blockage of root valve and pressure transmitter 2, improve the service life of pressure transmitter 2, can avoid the distortion of monitoring pressure value simultaneously, cause post personnel to make the error judgement, and the slag groove is blocked, and the normal production is influenced.

[0030] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form, and any simple modification, equivalent change and modification made according to the technical essence of the utility model to the above embodiment all belong to the range of the technical scheme of the utility model.

Claims

1. A slag filter device for use in a slag flushing water, characterized in that The filter guide device is arranged between the main pipeline of the slag flushing water and the pressure transmitter, comprising a filter guide pipe, a speed reduction coarse filter, a slag blocking device and a slag filter arranged in the filter guide pipe in sequence; a speed reduction chamber is formed in the filter guide pipe between the speed reduction coarse filter and the slag blocking device, a slag precipitation chamber is formed in the filter guide pipe between the slag blocking device and the slag filter, and a pressure taking chamber is formed in the filter guide pipe behind the slag filter; a blowdown valve one is arranged on the filter guide pipe at the speed reduction chamber, the blowdown valve one is close to the connection between the speed reduction coarse filter and the filter guide pipe, a blowdown valve two is arranged on the filter guide pipe at the slag precipitation chamber, the blowdown valve two is close to the connection between the slag blocking device and the filter guide pipe, and a blowdown valve three is arranged on the filter guide pipe at the pressure taking chamber, the blowdown valve three is close to the connection between the slag filter and the filter guide pipe.

2. The apparatus according to claim 1, wherein The speed reduction coarse filter is of a V-shaped structure, and the V-shaped angle is 30°.

3. The apparatus of claim 1 wherein: The slag blocking device is of a circular arc structure, and the arc of the slag blocking device protrudes towards the side of the pressure transmitter.

4. The apparatus of claim 1 wherein: The slag filter is of a circular arc structure, and the arc of the slag filter protrudes towards the side of the main pipeline of the slag flushing water.

5. The apparatus of claim 1 wherein: A plurality of speed reduction coarse filter holes are arranged on the speed reduction coarse filter, a plurality of slag blocking holes are arranged on the slag blocking device, and a plurality of slag filter holes are arranged on the slag filter, and the diameters of the speed reduction coarse filter holes, the slag blocking holes and the slag filter holes gradually decrease.

6. The apparatus of claim 5 wherein: The plurality of speed reduction coarse filter holes, the plurality of slag blocking holes and the plurality of slag filter holes are arranged in a circumferential direction, and the arrangement positions of the speed reduction coarse filter holes, the slag blocking holes and the slag filter holes gradually approach the central axis of the filter guide pipe.

7. The apparatus of claim 1 wherein: The filter guide pipe is arranged at an angle of 90° with the main pipeline of the slag flushing water.

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