A backwashing pipeline connection structure for a blast furnace slag flushing standby pump

Abstract

The present application relates to the technical fields of blast furnace ironmaking slag water treatment, and discloses a backwashing pipeline connection structure for a blast furnace slag flushing standby pump, which comprises a mounting plate, a cold water pool arranged on the right side of the mounting plate, a slag pool arranged on the left side of the mounting plate, a backwashing device arranged on the inner wall of the bottom of the slag pool, a switching part arranged on the top of the mounting plate, a limiting part arranged on the switching part, and a filtering part arranged on the switching part; the switching part comprises a multifunctional pump fixedly connected to the top of the mounting plate, and the outer wall of the multifunctional pump is fixedly connected with a liquid inlet pipe. The switching part is arranged to solve the problem that the existing pipeline is difficult to flexibly adjust the medium flow direction according to the field conditions during use, greatly reduces the overall utilization rate of the pipeline, and is inconvenient for smooth completion of the working condition switching, thereby affecting the overall operation efficiency of the blast furnace slag flushing and pipeline backwashing operation.

Description

Technical Field

[0001] This invention relates to the field of blast furnace slag water treatment technology, specifically to a backwashing pipeline connection structure for a standby blast furnace slag flushing pump. Background Technology

[0002] A backwashing pipeline connection structure for a standby blast furnace slag flushing pump includes a standby pump, a backwashing main pipe, branch pipes, and control valves. The inlet of the standby pump is connected to the slag flushing water filter tank, and the outlet is connected to the backwashing main pipe. The main pipe branches into multiple branch pipes connected to the water distributors at the bottom of each slag flushing tank. Each branch pipe is equipped with an electric valve. Under normal conditions, the standby pump is on standby. During backwashing, the outlet valve of the running pump is closed, and the valves of the standby pump and the corresponding branch pipe are opened to backwash the filter layer, prevent clogging, and ensure the stable operation of the slag flushing water system.

[0003] However, the existing pipelines are difficult to adjust the flow direction of the medium flexibly according to the on-site working conditions during use, which greatly reduces the overall utilization rate of the pipelines and makes it difficult to smoothly complete the switching of working conditions, thus affecting the overall operating efficiency of blast furnace slag flushing and pipeline backwashing operations. Summary of the Invention

[0004] The purpose of this invention is to provide a backwashing pipeline connection structure for a standby pump for blast furnace slag flushing. By setting a switching part, it solves the problem that existing pipelines are difficult to flexibly adjust the medium flow direction according to the on-site working conditions during use, which greatly reduces the overall utilization rate of the pipeline and makes it difficult to smoothly complete the switching of working conditions, thus affecting the overall operating efficiency of blast furnace slag flushing and pipeline backwashing operations.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a backwashing pipeline connection structure for a standby pump for blast furnace slag flushing, comprising a mounting plate and a cold water tank located on the right side of the mounting plate, a slag tank located on the left side of the mounting plate, and a backwashing device located on the inner wall of the bottom of the slag tank. The invention also includes: a switching section located on the top of the mounting plate; a limiting section located on the switching section; and a filtering section located on the switching section. The switching section includes a multi-functional pump fixedly connected to the top of the mounting plate, with an inlet pipe fixedly connected to the outer wall of the multi-functional pump, the end of which extends into the cold water tank. A main pipeline is fixedly connected to the mounting plate. A valve is fixedly connected to the top of the mounting plate. The end of the main pipeline away from the multi-functional pump is fixedly connected to the valve. A slag flushing main pipeline is fixedly connected to the right outer wall of the valve. A backwashing main pipeline is provided on the left outer wall of the valve. The end of the backwashing main pipeline is fixedly connected to the backwashing device. A valve core is rotatably connected inside the valve. A switching channel is opened on the valve core. A rotating shaft is rotatably connected to the top of the valve. The bottom end of the rotating shaft is fixedly connected to the valve core. A turntable is fixedly connected to the top end of the rotating shaft. The switching channel communicates with the main pipeline, the slag flushing main pipeline, and the backwashing main pipeline.

[0007] Furthermore, the limiting part includes a limiting component disposed on the valve; and an anti-detachment component disposed on the limiting component.

[0008] Furthermore, the filtration unit includes a cleaning assembly disposed on the valve; and a filtering assembly disposed on the cleaning assembly.

[0009] Furthermore, the limiting assembly includes a limiting turntable fixedly connected to the outer wall of the rotating shaft. The outer wall of the limiting turntable has several limiting slots. A rectangular plate is fixedly connected to the top of the valve. Two slide rods are slidably connected to the rectangular plate. A slide plate is fixedly connected to the rear end of the two slide rods. An insert rod is fixedly connected to the back of the slide plate. The rear end of the insert rod extends into the corresponding limiting slot. A pull rod is slidably connected to the rectangular plate. The rear end of the pull rod is fixedly connected to the slide plate. Elastic elements are provided on the two slide rods. Four limiting slots are provided. The elastic elements include springs wound around the outer wall of the two slide rods. One end of each spring is fixedly connected to the rectangular plate, and the other end of each spring is fixedly connected to the slide plate.

[0010] Furthermore, the anti-detachment component includes an anti-detachment hole formed on the top of the rectangular plate, the anti-detachment hole communicating with the pull rod, and an anti-detachment pin slidably connected inside the anti-detachment hole.

[0011] Furthermore, the cleaning assembly includes a filter box fixedly connected to the outer wall of the valve, a support rod fixedly connected inside the filter box, a rotating rod rotatably connected to the support rod, blades fixedly connected to the outer wall of the rotating rod, and a brush fixedly connected to the left end of the rotating rod. The filter box communicates with the valve and the switching channel.

[0012] Furthermore, the filter assembly includes a mounting groove formed on the top of the filter box, a filter screen is slidably connected in the mounting groove, and a slag discharge pipe is fixedly connected to the front of the filter box, the slag discharge pipe communicating with the filter box.

[0013] The present invention has the following beneficial effects:

[0014] 1. The function of the switching unit of this invention is to realize the flexible switching of the pipeline medium flow direction and quickly complete the mutual conversion between slag flushing operation and pipeline backwashing operation. Its significance lies in solving the defects of traditional pipelines with single function and inability to adapt to multiple operation switching, realizing that a single device can take into account both slag flushing operation and pipeline backwashing operation, greatly improving the overall utilization rate of the pipeline, ensuring continuous and uninterrupted blast furnace slag flushing operation, and effectively improving the operational adaptability and overall operation efficiency of the entire pipeline system.

[0015] 2. The limiting part of this invention is used to lock and fix the position of the valve core and the rotating shaft after the working condition is switched, so as to keep the pipeline connection state stable and unchanged. Its significance is to effectively prevent the valve core from rotating on its own due to equipment vibration and water flow impact, and to prevent the pipeline working condition from being switched incorrectly. It ensures the stability and reliability of the slag flushing and backwashing working conditions, avoids the impact of the working condition disorder on the normal production of the blast furnace, and improves the operating safety of the pipeline system.

[0016] 3. The function of the filter section of this invention is to filter and purify impurities in the medium transported in the pipeline, and to clean the filter structure in real time to avoid filter screen blockage. Its significance lies in its ability to effectively intercept impurities and dirt in the water flow, ensuring the cleanliness of the water entering the slag pool. At the same time, it realizes automatic cleaning of the filter screen without disassembly, continuously ensuring smooth pipeline and stable filtration effect, reducing pipeline blockage failures and the frequency of manual maintenance, reducing operation and maintenance costs, and ensuring the long-term stable and efficient operation of the entire slag flushing and backwashing system.

[0017] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a partial cross-sectional view of the switching section of the present invention;

[0021] Figure 3 This is a partial cross-sectional view of the limiting part of the present invention;

[0022] Figure 4 This is a partial cross-sectional view of the filter section of the present invention;

[0023] Figure 5 For the present invention Figure 2 A magnified structural diagram of A in the middle;

[0024] Figure 6 For the present invention Figure 3 A magnified structural diagram of B in the diagram;

[0025] Figure 7 For the present invention Figure 4 A magnified structural diagram of C.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] In the diagram: 111. Mounting plate; 112. Cold water tank; 113. Slag tank; 114. Backwashing device; 2. Switching unit; 211. Multi-functional pump; 212. Liquid inlet pipe; 213. Main pipeline; 214. Valve; 215. Slag flushing main pipeline; 216. Backwashing main pipeline; 217. Valve core; 218. Switching channel; 219. Rotary shaft; 2191. Turntable; 3. Limiting unit; 31. Limiting assembly; 311. Limiting turntable; 312. Limiting... 313. Slot; 314. Rectangular plate; 315. Slide rod; 316. Slide plate; 317. Insert rod; 318. Spring; 319. Pull rod; 32. Anti-detachment assembly; 321. Anti-detachment hole; 322. Anti-detachment pin; 4. Filter section; 41. Cleaning assembly; 411. Filter box; 412. Support rod; 413. Rotating rod; 414. Blade; 415. Brush; 42. Filter assembly; 421. Mounting groove; 422. Filter screen; 423. Slag discharge pipe. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1 - Figure 7 As shown, the present invention is a backwashing pipeline connection structure for a standby pump for blast furnace slag flushing, including a mounting plate 111 and a cold water pool 112 disposed on the right side of the mounting plate 111, a slag pool 113 disposed on the left side of the mounting plate 111, and a backwashing device 114 disposed on the bottom inner wall of the slag pool 113. It also includes: a switching part 2 disposed on the top of the mounting plate 111; a limiting part 3 disposed on the switching part 2; and a filtering part 4 disposed on the switching part 2.

[0030] The switching unit 2 includes a multi-functional pump 211 fixedly connected to the top of the mounting plate 111. An inlet pipe 212 is fixedly connected to the outer wall of the multi-functional pump 211, with the end of the inlet pipe 212 extending into the cold water tank 112. A main pipe 213 is fixedly connected to the outer wall of the multi-functional pump 211. A valve 214 is fixedly connected to the top of the mounting plate 111. The end of the main pipe 213 away from the multi-functional pump 211 is fixedly connected to the valve 214. A slag flushing main pipe 215 is fixedly connected to the right outer wall of the valve 214. A backwash main pipe 216 is provided on the left outer wall of 4. The end of the backwash main pipe 216 is fixedly connected to the backwash device 114. A valve core 217 is rotatably connected inside the valve 214. A switching channel 218 is opened on the valve core 217. A rotating shaft 219 is rotatably connected to the top of the valve 214. The bottom end of the rotating shaft 219 is fixedly connected to the valve core 217. A turntable 2191 is fixedly connected to the top end of the rotating shaft 219. The switching channel 218 is connected to the main pipe 213, the slag flushing main pipe 215 and the backwash main pipe 216.

[0031] The limiting part 3 includes a limiting component 31, which is mounted on the valve 214; and an anti-detachment component 32, which is mounted on the limiting component 31. The limiting component 31 includes a limiting turntable 311 fixedly connected to the outer wall of the rotating shaft 219. The outer wall of the limiting turntable 311 has several limiting slots 312. A rectangular plate 313 is fixedly connected to the top of the valve 214. Two sliding rods 314 are slidably connected to the rectangular plate 313. A sliding plate 315 is fixedly connected to the rear end of the two sliding rods 314. An insertion rod 316 is fixedly connected to the back of the sliding plate 315. The rear end of the insertion rod 316 extends to the corresponding limiting insertion. Inside the groove 312, a pull rod 318 is slidably connected to the rectangular plate 313. The rear end of the pull rod 318 is fixedly connected to the slide plate 315. Two slide rods 314 are provided with elastic elements. Four limit slots 312 are provided. The elastic elements include springs 317 wrapped around the outer wall of the two slide rods 314. One end of each spring 317 is fixedly connected to the rectangular plate 313, and the other end of each spring 317 is fixedly connected to the slide plate 315. The anti-detachment component 32 includes an anti-detachment hole 321 opened on the top of the rectangular plate 313. The anti-detachment hole 321 communicates with the pull rod 318. An anti-detachment pin 322 is slidably connected inside the anti-detachment hole 321.

[0032] The filtration unit 4 includes a cleaning assembly 41, which is mounted on the valve 214; and a filter assembly 42, which is mounted on the cleaning assembly 41. The cleaning assembly 41 includes a filter box 411 fixedly connected to the outer wall of the valve 214. A support rod 412 is fixedly connected inside the filter box 411. A rotating rod 413 is rotatably connected to the support rod 412. A blade 414 is fixedly connected to the outer wall of the rotating rod 413. A brush 415 is fixedly connected to the left end of the rotating rod 413. The filter box 411 communicates with the valve 214 and the switching channel 218. The filter assembly 42 includes a mounting groove 421 opened on the top of the filter box 411. A filter screen 422 is slidably connected inside the mounting groove 421. A slag discharge pipe 423 is fixedly connected to the front of the filter box 411 and communicates with the filter box 411.

[0033] It should be noted that the control of the multi-functional pump 211 in this application can be achieved by using a program set in the control panel and inputting relevant parameters as needed for automated control. This control method can be implemented using existing technologies, such as PLC.

[0034] In use, when the permeability of the slag pool 113 decreases and the water level in the cold water pool 112 reaches a high level, the anti-detachment pin 322 on the rectangular plate 313 can be pulled out first to release the limit on the pull rod 318. Then, pull the pull rod 318 outward, causing it to drive the sliding plate 315 and its insert rod 316. Under the guidance of the two sliding rods 314, the spring 317 on its outer wall is compressed simultaneously. Through the outward movement of the sliding plate 315, the insert rod 316 can be pulled out from the corresponding limit slot 312 on the limit turntable 311. Then, rotate the turntable 2191, causing it to drive the valve core 217 via the rotating shaft 219. The switching channel 218 is rotated to a position where it connects with the main pipeline 213 and the backwash main pipeline 216. After the switching is completed, it is locked in the reverse order. At this time, the slag flushing main pipeline 215 is closed. Then, the multi-functional pump 211 is started. The multi-functional pump 211 will deliver backwash water to the backwashing device 114 in the slag pool 113 through the liquid inlet pipe 212, the main pipeline 213, the switching channel 218, the filter box 411 and the backwash main pipeline 216. The backwash flow rate is 2300 m³ / h, and the duration of a single backwash is 6-8 minutes. It can quickly restore the permeability of the slag pool, and the backwashing operation can be carried out during non-iron tapping intervals without time restrictions.

[0035] Meanwhile, when the water in the cold water pool 112 flows to the slag pool 113, the water flows into the filter box 411 through the switching channel 218. After being filtered by the filter screen 422 in the filter box 411, the water flows into the backwashing device 114 on the slag pool 113. During this process, the water flow will drive the blades 414 on the outer wall of the rotating rod 413 in the filter box 411 to rotate. The blades 414 drive the brush 415 to rotate through the rotating rod 413 to clean the outer surface of the filter screen 422, preventing impurities from clogging the filter screen 422. The cleaned impurities are discharged through the slag discharge pipe 423.

[0036] When the other two conventional slag flushing pumps experience mechanical failure and need to be switched, the limit on the rotating shaft 219 can be released according to the aforementioned steps, so that the turntable 2191 drives the switching channel 218 on the valve core 217 to rotate to a position that connects with the main pipeline 213 and the slag flushing main pipeline 215. At this time, the backwashing main pipeline 216 is in the closed state. Then, the multi-functional pump 211 is started. The multi-functional pump 211 will perform the slag flushing task through the liquid inlet pipe 212, the main pipeline 213, the switching channel 218 and the slag flushing main pipeline 215 to ensure that the slag flushing operation is not interrupted during iron tapping.

[0037] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A backwashing pipeline connection structure for a standby blast furnace slag flushing pump, comprising a mounting plate (111) and a cold water tank (112) disposed on the right side of the mounting plate (111), wherein a slag tank (113) is disposed on the left side of the mounting plate (111), and a backwashing device (114) is disposed on the bottom inner wall of the slag tank (113), characterized in that, Also includes: A switching unit (2) is provided on the top of the mounting plate (111); A limiting part (3) is provided on the switching part (2); as well as A filter section (4) is provided on the switching section (2); The switching unit (2) includes a multi-functional pump (211) fixedly connected to the top of the mounting plate (111). An inlet pipe (212) is fixedly connected to the outer wall of the multi-functional pump (211). The end of the inlet pipe (212) extends into the cold water tank (112). A main pipe (213) is fixedly connected to the outer wall of the multi-functional pump (211). A valve (214) is fixedly connected to the top of the mounting plate (111). The end of the main pipe (213) away from the multi-functional pump (211) is fixedly connected to the valve (214). The right outer wall of the valve (214) A slag flushing main pipe (215) is fixedly connected. A backwashing main pipe (216) is provided on the left outer wall of the valve (214). The end of the backwashing main pipe (216) is fixedly connected to the backwashing device (114). A valve core (217) is rotatably connected inside the valve (214). A switching channel (218) is opened on the valve core (217). A rotating shaft (219) is rotatably connected to the top of the valve (214). The bottom end of the rotating shaft (219) is fixedly connected to the valve core (217). A turntable (2191) is fixedly connected to the top end of the rotating shaft (219). The switching channel (218) is connected to the main pipeline (213), the slag flushing main pipeline (215), and the backwashing main pipeline (216).

2. The backwashing pipeline connection structure for a standby blast furnace slag flushing pump according to claim 1, characterized in that: The limiting part (3) includes a limiting component (31), which is disposed on the valve (214); and Anti-detachment component (32), which is disposed on the limiting component (31).

3. The backwashing pipeline connection structure for a standby blast furnace slag flushing pump according to claim 2, characterized in that: The filter section (4) includes a cleaning assembly (41) disposed on the valve (214); and A filter assembly (42) is disposed on a cleaning assembly (41).

4. The backwashing pipeline connection structure for a standby blast furnace slag flushing pump according to claim 3, characterized in that: The limiting component (31) includes a limiting turntable (311) fixedly connected to the outer wall of the rotating shaft (219). The outer wall of the limiting turntable (311) is provided with a plurality of limiting slots (312). A rectangular plate (313) is fixedly connected to the top of the valve (214). Two slide rods (314) are slidably connected to the rectangular plate (313). A slide plate (315) is fixedly connected to the rear end of the two slide rods (314). A plug rod (316) is fixedly connected to the back of the slide plate (315). The rear end of the plug rod (316) extends into the corresponding limiting slot (312). A pull rod (318) is slidably connected to the rectangular plate (313). The rear end of the pull rod (318) is fixedly connected to the slide plate (315). Elastic elements are provided on the two slide rods (314). Four limit slots (312) are provided.

5. The backwashing pipeline connection structure for a standby blast furnace slag flushing pump according to claim 4, characterized in that: The anti-detachment component (32) includes an anti-detachment hole (321) opened on the top of the rectangular plate (313), the anti-detachment hole (321) is connected to the pull rod (318), and an anti-detachment pin (322) is slidably connected in the anti-detachment hole (321).

6. The backwashing pipeline connection structure for a standby blast furnace slag flushing pump according to claim 5, characterized in that: The cleaning assembly (41) includes a filter box (411) fixedly connected to the outer wall of the valve (214), a support rod (412) fixedly connected inside the filter box (411), a rotating rod (413) rotatably connected to the support rod (412), a blade (414) fixedly connected to the outer wall of the rotating rod (413), and a brush (415) fixedly connected to the left end of the rotating rod (413). The filter box (411) is connected to the valve (214) and the switching channel (218).

7. The backwashing pipeline connection structure for a standby blast furnace slag flushing pump according to claim 6, characterized in that: The filter assembly (42) includes a mounting groove (421) opened on the top of the filter box (411), a filter screen (422) is slidably connected in the mounting groove (421), and a slag discharge pipe (423) is fixedly connected to the front of the filter box (411). The slag discharge pipe (423) is connected to the filter box (411).

8. The backwashing pipeline connection structure for a standby blast furnace slag flushing pump according to claim 7, characterized in that: The elastic element includes springs (317) wrapped around the outer walls of two slide bars (314), one end of each spring (317) being fixedly connected to a rectangular plate (313), and the other end of each spring (317) being fixedly connected to a sliding plate (315).

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