A kind of anti-blocking structure of drainage pipeline

Abstract

The utility model relates to the technical field of boiler drainage pipes, and discloses a drainage pipe anti-blocking structure, including a drainage pipe, a stop valve and a connecting pipe, the drainage pipe including an inlet end and an outlet end, the inlet end is connected to the boiler to discharge water in the boiler; the connecting pipe is bent, the connecting pipe includes a first end and a second end, the stop valve is arranged between the first end and the second end, the first end is connected to the outlet end of the drainage pipe, the setting height of the stop valve is higher than the first end, and the second end of the connecting pipe is used to connect a drain tank. In the technical scheme of the utility model, the drainage pipe is connected through the connecting pipe, and the stop valve is arranged at a position higher than the first end of the connecting pipe, so that when the iron filings in the boiler enter the connecting pipe, they are affected by gravity and deposited at the lowest point in the connecting pipe, and will not enter the stop valve with the water in the pipe, thereby avoiding the iron filings being stuck in the valve core of the stop valve to affect its normal opening and closing, and ensuring the normal operation of the stop valve.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler drainage pipes, in particular to an anti-blocking structure for drainage pipes. Background Art

[0002] After the boiler heating surface is overhauled, rolled iron filings remain in the heating surface pipes, and these residual rolled iron filings enter the drainage pipes through boiler water flushing, pressure water discharge, etc. Because the high-pressure valve of the drainage pipe is a stop valve, and because the valve is set at a height lower than the height of the boiler outlet, when the water in the boiler flows through the valve through the drainage pipe, the iron filings mixed in the water are easily stuck in the valve core, eventually causing the valve to be unable to close tightly. Utility Model Content

[0003] The main purpose of the utility model is to provide a drainage pipe anti-blocking structure, aiming to improve the anti-blocking effect of the drainage pipe and prevent impurities in the pipe from blocking the valve and affecting the normal opening and closing of the valve.

[0004] In order to achieve the above-mentioned purpose, the utility model proposes a drainage pipe anti-blocking structure, comprising:

[0005] A drainage water pipeline, the drainage water pipeline comprising a water inlet end and a water outlet end, the water inlet end being connected to the boiler to discharge water in the boiler;

[0006] Stop valve;

[0007] A connecting pipe, wherein the connecting pipe is bent and includes a first end and a second end, the stop valve is arranged between the first end and the second end, the first end is connected to the water outlet end of the drainage pipe, the stop valve is arranged at a height higher than the first end, and the second end of the connecting pipe is used to connect to a drain tank.

[0008] Optionally, the connecting pipe is arranged in an inverted U shape.

[0009] Optionally, the drainage pipe anti-blocking structure further includes a chip discharge port, and the chip discharge port is arranged at the lowest point of the liquid level of the connecting pipe close to the first end.

[0010] Optionally, the drainage water pipe is arranged in a vertical direction, the water outlet end of the drainage water pipe forms the chip discharge port, and the first end of the connecting pipe is arranged between the water inlet end and the water outlet end.

[0011] Optionally, the drainage pipe anti-blocking structure further includes a filter, and the filter is arranged between the first end of the connecting pipe and the stop valve.

[0012] Optionally, the filter includes a first flow channel and a second flow channel, the two ends of the first flow channel are respectively connected to the drainage pipe, the second flow channel is connected to the first flow channel and is set at an angle to the first flow channel, a baffle is provided in the first flow channel, the baffle is connected to the inner wall of the first flow channel and is set away from the second flow channel, and a gap is formed between the baffle and the first flow channel for water to pass through.

[0013] Optionally, the normal direction of the baffle is parallel to or at an angle to the cross section of the first flow channel.

[0014] Optionally, the distance between the water inlet end of the drainage pipe and the first end of the connecting pipe is 300 mm.

[0015] Optionally, the connecting pipeline includes a first branch and a second branch, the first branch and the second branch are connected to the stop valve after merging, and filters are provided on the first branch and the second branch.

[0016] Optionally, a plurality of filtering holes are provided on the baffle.

[0017] In the technical solution of the utility model, a drainage pipe anti-blocking structure is proposed, including a drainage pipe, a stop valve and a connecting pipe. The drainage pipe is connected through the connecting pipe, and the stop valve is set at a position higher than the first end of the connecting pipe. In this way, when iron filings in the boiler enter the connecting pipe driven by water, they are deposited at the lowest point of the liquid level in the connecting pipe due to gravity, and will not enter the stop valve with the water in the pipe. This avoids the iron filings getting stuck in the valve core of the stop valve and affecting its normal opening and closing, thereby ensuring the normal operation of the stop valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 A schematic structural diagram of an embodiment of the anti-blocking structure for drainage pipes provided by the utility model;

[0020] Figure 2 It is a structural schematic diagram of the filter in the utility model.

[0021] Description of Figure Numbers:

[0022]

[0023] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0027] After the boiler heating surface is overhauled, rolled iron filings remain in the heating surface pipes, and these residual rolled iron filings enter the drainage pipes through boiler water flushing, pressure water discharge, etc. Because the high-pressure valve of the drainage pipe is a stop valve, and because the valve is set at a height lower than the height of the boiler outlet, when the water in the boiler flows through the valve through the drainage pipe, the iron filings mixed in the water are easily stuck in the valve core, eventually causing the valve to be unable to close tightly.

[0028] In order to solve the above problems, the utility model proposes an anti-blocking structure for drainage pipes, which aims to improve the anti-blocking effect of drainage pipes and prevent impurities in the pipes from blocking the valves and affecting the normal opening and closing of the valves. Figure 1 to Figure 2 The present invention is a schematic structural diagram of an embodiment of the anti-blocking structure for drainage pipes provided by the present invention.

[0029] Please refer to Figure 1 to Figure 2The utility model proposes a drainage pipe anti-blocking structure 1000, comprising a drainage pipe 1, a stop valve 2 and a connecting pipe 3, wherein the drainage pipe 1 comprises an inlet end and an outlet end, wherein the inlet end is connected to a boiler to discharge water from the boiler; the connecting pipe 3 is bent, and the connecting pipe 3 comprises a first end and a second end, wherein the stop valve 2 is arranged between the first end and the second end, wherein the first end is connected to the outlet end of the drainage pipe 1, and the setting height of the stop valve 2 is higher than the first end, and the second end of the connecting pipe 3 is used to connect to a drain tank.

[0030] In the technical solution of the utility model, a drainage pipe anti-blocking structure 1000 is proposed, including a drainage pipe 1, a stop valve 2 and a connecting pipe 3. The drainage pipe 1 is connected through the connecting pipe 3, and the stop valve 2 is set at a position higher than the first end of the connecting pipe 3. In this way, when the iron filings in the boiler enter the connecting pipe 3 driven by water, they are deposited at the lowest point of the liquid level in the connecting pipe 3 due to the influence of gravity, and will not enter the stop valve 2 with the water in the pipe. This avoids the iron filings getting stuck in the valve core of the stop valve 2 and affecting its normal opening and closing, thereby ensuring the normal operation of the stop valve 2.

[0031] In an optional embodiment, in order to reduce the layout space of the connecting pipe 3, the connecting pipe 3 is arranged in an inverted U shape. Figure 1 The first end of the connecting pipe 3 is set at a level lower than the level of the stop valve 2, so as to prevent the water flowing down from the boiler from bringing the iron filings mixed in the boiler from the first end into the stop valve 2 above under the action of its own gravitational potential energy, thereby preventing these iron filings from clogging the valve core of the stop valve 2, and setting the connecting pipe 3 into an inverted U shape can reduce the space occupied by the connecting pipe 3 as much as possible. Of course, the above is only one of the optional embodiments. In actual design situations, the connecting pipe 3 can also be a continuous S-shape or Z-shape. It is only necessary to retain the iron filings at the bottom end of the connecting pipe 3 or the drainage pipe 1 to prevent them from entering the stop valve 2, and no specific limitation is made here.

[0032] In an optional embodiment, in order to facilitate the discharge of iron chips retained in the drainage pipe anti-blocking structure 1000, the drainage pipe anti-blocking structure 1000 also includes a chip discharge port, which is arranged at the lowest point of the liquid level of the connecting pipe 3 near the first end. Since the iron filings are retained at the bottom end of the connecting pipe 3 due to their own gravity, a chip discharge port can be opened at the lowest position of the liquid level near the first end so as to timely clean the iron filings in the drainage pipe 1 and the connecting pipe 3. In addition, in order to prevent the chip discharge port from affecting the airtightness of the drainage pipe anti-blocking structure 1000, a section of pipe for storing iron filings can be connected at the position of the chip discharge port so that the iron filings above naturally fall into this section of the pipe for storing iron filings due to their own gravity, and a valve or end cover is provided at the bottom end of this section of the pipe to movably block the other end of the pipe. This will not affect the normal drainage of the drainage pipe anti-blocking structure 1000, and can also facilitate the periodic opening of this section of the pipe for storing iron filings to clean the iron filings inside, thereby ensuring the normal operation of the drainage pipe anti-blocking structure 1000.

[0033] In an optional embodiment, in order to simplify the structure of the drainage pipe anti-blocking structure 1000, the drainage pipe 1 is arranged in the vertical direction, the water outlet end of the drainage pipe 1 forms the chip discharge port, and the first end of the connecting pipe 3 is arranged between the water inlet end and the water outlet end. Figure 1 Since the structure of the existing drainage water pipe 1 is mostly to directly connect the boiler above and the drain tank below through a pipe, in order to avoid the situation where iron filings are blocked by the stop valve 2, the first end of the connecting pipe 3 can be connected to the original pipe at a position a certain distance below the boiler, and the stop valve 2 is set at a position higher than the first end, so that the connecting pipe 3 can discharge the water in the boiler to the drain tank, and the lower part of the original drainage water pipe 1 below the first end can be used to store iron filings falling from above. In this way, the effect of avoiding blockage of the stop valve 2 can be achieved directly by modifying the original pipe, which not only simplifies the structure of the drainage water pipe anti-blocking structure 1000, but also reduces the modification and layout cost of the drainage water pipe anti-blocking structure 1000.

[0034] In this embodiment, the distance between the water inlet end of the drainage pipe 1 and the first end of the connecting pipe 3 is 300 mm. By setting the first end of the connecting pipe 3 at a distance from the water outlet of the boiler, the water just discharged from the boiler flows in the pipe for a distance to be stable, avoiding surging in the pipe, so that the iron filings in the pipe can be better deposited. In actual design, the distance between the first end and the upper boiler is selected according to actual conditions and is not specifically limited here.

[0035] In an optional embodiment, in order to further block the iron filings in the waterproof structure of the drainage pipe 1, the drainage pipe anti-blocking structure 1000 further includes a filter 4, and the filter 4 is arranged between the first end of the connecting pipe 3 and the stop valve 2. Optionally, the filter 4 is arranged between the first end of the connecting pipe 3 and the stop valve 2 to further filter some relatively fine iron filings mixed with the flow of water, so as to reduce the possibility of these iron filings entering the stop valve 2 as much as possible, and ensure the normal operation of the stop valve 2.

[0036] Specifically, in order to block the iron filings in the connecting pipe 3, the filter 4 includes a first flow channel 41 and a second flow channel 42, the two ends of the first flow channel 41 are respectively connected to the drainage pipe 1, the second flow channel 42 is connected to the first flow channel 41 and is set at an angle to the first flow channel 41, a baffle 43 is provided in the first flow channel 41, the baffle 43 is connected to the inner wall of the first flow channel 41 and is set away from the second flow channel 42, and a gap is formed between the baffle 43 and the first flow channel 41 for water to pass through. Please refer to Figure 2 The filter 4 includes a horizontal first flow channel 41 and a second flow channel 42 arranged below the first flow channel 41. The second flow channel 42 can be arranged perpendicular to the first flow channel 41, or can be arranged obliquely at a certain angle to the first flow channel 41. When the water flow in the connecting pipe 3 flows in from the left end of the first flow channel 41, since a baffle 43 is arranged in the first flow channel 41, the water flow can only pass through the gap below the baffle 43, and the water flow is blocked by the baffle 43, so the flow velocity is slowed down, and the finer iron filings mixed in the water are more likely to be deposited and fall into the second flow channel 42 for collection. Optionally, a valve or end cover can be arranged below the second flow channel 42 to facilitate opening and cleaning of iron filings.

[0037] In an optional embodiment, in order to facilitate the baffle 43 to block the water flow and deposit the iron filings, the normal direction of the baffle 43 is parallel to or at an angle to the cross section of the first flow channel 41. Figure 2 When the normal is parallel to the cross section of the first flow channel 41, that is, the baffle 43 is vertically arranged in the flow channel, when the normal of the baffle 43 forms an angle with the cross section of the first flow channel 41, that is, the lower end of the baffle 43 can be deviated to the left or right relative to the upper end of the baffle 43. When the lower end of the baffle 43 is deviated to the left relative to the upper end of the baffle 43, the baffle 43 has the greatest degree of obstruction to the water flow in the pipeline, that is, the baffle 43 has the greatest degree of slowing down the water flow speed in the pipeline, which is more conducive to the deposition of iron filings in the water flow. The specific setting angle can be selected according to actual needs and is not specifically limited here.

[0038] In an optional embodiment, a plurality of filtering holes are provided on the baffle 43. The iron filings can be filtered by opening some small holes on the baffle 43, or by setting a filter net on the side of the baffle 43 facing the entrance of the first flow channel 41, and filtering the iron filings through the filter net. In this way, compared with the baffle 43 without holes, the amount of water that can pass through the filter 4 per unit time is larger, so that the water in the boiler can be discharged to the drain tank in time.

[0039] In an optional embodiment, in order to further improve the filtering effect of the connecting pipe 3, the connecting pipe 3 includes a first branch and a second branch, the first branch and the second branch are connected to the stop valve 2 after merging, and the first branch and the second branch are both provided with a filter 4. Optionally, after the water in the boiler enters the connecting pipe 3 through the first end, the water flow is divided into two by diversion and filtered through the filter 4 respectively, so that the water after diversion flows more smoothly and stably, and the iron filings are more easily deposited under the action of their own gravity after passing through the filter 4, further improving the removal effect of the anti-blocking structure 1000 of the drainage pipe on the iron filings.

[0040] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A drainage pipe anti-blocking structure, characterized in that: include: A drainage water pipeline, the drainage water pipeline comprising a water inlet end and a water outlet end, the water inlet end being connected to the boiler to discharge water in the boiler; Stop valve; A connecting pipe, wherein the connecting pipe is bent and includes a first end and a second end, the stop valve is arranged between the first end and the second end, the first end is connected to the water outlet end of the drainage pipe, the stop valve is arranged at a height higher than the first end, and the second end of the connecting pipe is used to connect to a drain tank.

2. The anti-blocking structure for drainage pipes according to claim 1, characterized in that: The connecting pipe is arranged in an inverted U shape.

3. The anti-blocking structure for drainage pipes according to claim 2, characterized in that: The anti-blocking structure for draining water pipes also includes a chip discharge port, which is arranged at the lowest point of the liquid level of the connecting pipe close to the first end.

4. The anti-blocking structure for drainage pipes according to claim 3, characterized in that: The drainage water pipe is arranged in a vertical direction, the water outlet end of the drainage water pipe forms the chip discharge port, and the first end of the connecting pipe is arranged between the water inlet end and the water outlet end.

5. The anti-blocking structure for drainage pipes according to any one of claims 1 to 4, characterized in that: The anti-clogging structure for the drainage pipe also includes a filter, which is arranged between the first end of the connecting pipe and the stop valve.

6. The anti-blocking structure for drainage pipes according to claim 5, characterized in that: The filter includes a first flow channel and a second flow channel, the two ends of the first flow channel are respectively connected to the drainage pipe, the second flow channel is connected to the first flow channel and is arranged at an angle to the first flow channel, a baffle is provided in the first flow channel, the baffle is connected to the inner wall of the first flow channel and is arranged away from the second flow channel, and a gap is formed between the baffle and the first flow channel for water to pass through.

7. The anti-blocking structure for drainage pipes according to claim 6, characterized in that: The normal direction of the baffle is parallel to or at an angle to the cross section of the first flow channel.

8. The anti-blocking structure for drainage pipes according to claim 6, characterized in that: The distance between the water inlet end of the drainage pipe and the first end of the connecting pipe is 300 mm.

9. The anti-blocking structure for drainage pipes according to claim 6, characterized in that: The connecting pipeline includes a first branch and a second branch. The first branch and the second branch are connected to the stop valve after merging. Filters are provided on both the first branch and the second branch.

10. The anti-blocking structure for drainage pipes according to claim 9, characterized in that: The baffle is provided with a plurality of filtering holes.

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