A waste heat boiler blowdown recovery device

Abstract

The utility model discloses a kind of waste heat boiler blowdown recovery devices, it includes waste heat boiler, waste heat boiler side wall is equipped with reflux pipe, reflux pipe one end is equipped with circulating pump, waste heat boiler side wall is equipped with cleaning assembly, reflux pipe circumferential inner wall other end is equipped with spray medicine component, waste heat boiler side wall top is equipped with water inlet pipe, waste heat boiler side wall bottom is equipped with water outlet pipe, this kind of waste heat boiler blowdown recovery device, by circulating pump water of cleaning agent is entered waste heat boiler, the scale adhered to inner wall is cleaned, after the water filtered by filter screen is returned into waste heat boiler from reflux pipe, it is convenient to repeatedly use clean water, by backflush to the back of filter screen, it is convenient to clean and discharge the scale accumulated on filter screen, avoid jamming influence use, secondly, by circulating pump water flow added cleaning agent flows along reflux pipe and impact turbine blade to make it rotate driving rotating sleeve rotation, it is convenient to rotate and inject into waste heat boiler with cleaning agent water, spread with cleaning agent to make scale cleaning more sufficient.

Description

Technical Field

[0001] This utility model relates to the field of boiler blowdown technology, specifically a waste heat boiler blowdown recovery device. Background Technology

[0002] Waste heat boilers are boilers that use the residual heat from waste gas, waste materials, or waste liquids in various industrial processes, as well as the heat generated by the combustion of combustible substances, to heat water to a certain temperature. Waste heat boilers can produce hot water or steam through waste heat recovery to supply other processes. Waste heat boilers need to be regularly sludged and cleaned to ensure normal operation.

[0003] The prior art patent document CN222527621U discloses a waste heat boiler blowdown recovery device, including a waste heat boiler, an inlet on one side of the waste heat boiler, an outlet on the side away from the inlet, and a recovery tank on the side of the waste heat boiler. During the circulating flushing of the inside of the waste heat boiler, scale is continuously flushed out along with the cleaning agent. Visible scale particles are filtered and recovered after entering the recovery tank, while smaller scale particles enter the sedimentation chamber for sedimentation and recovery. The cleaning agent then overflows back into the circulation chamber. This continuous cleaning and recovery of scale during the circulating flushing process avoids excessive scale contamination in the cleaning agent, which could clog the circulation pump and affect the subsequent cleaning effect of the cleaning agent on the boiler.

[0004] Although the existing technology has many beneficial effects, the following problems still exist: During the use of this device, after long-term use, scale accumulates on the mesh surface of the recycling bin, which can easily clog the bin and affect its use. Manually removing the recycling bin for cleaning is not convenient. Secondly, during the use of this device, the cleaning agent water is directly injected into the waste heat boiler, which makes it difficult to spread the cleaning agent evenly on the inner wall of one end of the waste heat boiler, resulting in insufficient scale removal. Therefore, improvements are needed. In view of this, we propose a waste heat boiler blowdown recycling device. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] 1. Technical problems to be solved: To address the issues of scale buildup on the mesh surface of the recycling bin after medium to long-term use, which can easily clog the bin and affect its operation, the inconvenience of manually removing the recycling bin for cleaning, and the difficulty in effectively distributing cleaning agent water to the inner wall of the waste heat boiler, resulting in insufficient scale removal, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide a waste heat boiler blowdown recovery device, which facilitates the cleaning and recycling of filter scale and the reuse of clean water, makes it easy to clean the scale accumulated on the filter screen, avoids clogging and affecting use, and facilitates the rotary spraying of cleaning agent water into the waste heat boiler, so that the cleaning agent covers the inner wall of the waste heat boiler, making it easier to clean the scale more thoroughly.

[0008] 2. Technical Solution: To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A waste heat boiler wastewater recovery device includes a waste heat boiler, a return pipe on the side wall of the waste heat boiler, a circulation pump at one end of the return pipe, a cleaning component on the side wall of the waste heat boiler, the cleaning component including a drain pipe, a three-way valve at the other end of the drain pipe, conveying pipes at both ends of the three-way valve, a first solenoid valve at one end of the inner circumference of each of the two conveying pipes, a filter screen at the inner circumference of each of the two conveying pipes, a waste trough at the bottom of the outer circumference of each of the two waste troughs, a discharge pipe on the side wall of each of the two discharge pipes, a second solenoid valve on the inner circumference of each of the two discharge pipes, a collecting pipe at the other end of the conveying pipe, a third solenoid valve connected to the input end of the circulation pump at the inner circumference of the collecting pipe, a spraying component at the other end of the inner circumference of the return pipe, a water inlet pipe at the top of the side wall of the waste heat boiler, a water outlet pipe at the bottom of the side wall of the waste heat boiler, and an electrical connection to an external power source. The three-way valve facilitates control of water flow from different conveying pipes for filtration, allowing for easy switching and uninterrupted operation.

[0009] In a preferred embodiment of the waste heat boiler blowdown recovery device of this utility model, the spraying assembly includes a fixed plate, a rotating shaft rotatably connected to the side wall of the fixed plate, multiple turbine blades on the outer circumference of the rotating shaft, a connecting plate at the other end of the rotating shaft, a rotating sleeve on the outer circumference of the connecting plate, and multiple spraying slots on the outer circumference of the rotating sleeve. The turbine blades rotate automatically under the impact of water flow, saving the cost of the drive device.

[0010] In a preferred embodiment of the waste heat boiler blowdown recovery device of this utility model, the filter screen has a mesh size of 40-80 mesh and the filter screen material is 316L stainless steel.

[0011] As a preferred embodiment of the waste heat boiler wastewater recovery device of this utility model, the other end of the discharge pipe is connected to an external waste discharge pipe, and valves are provided on the inner circumference of both the inlet pipe and the outlet pipe.

[0012] In a preferred embodiment of the waste heat boiler blowdown recovery device of this utility model, a plurality of turbine blades are arranged in an inclined array along the rotating shaft, and the other end of the rotating sleeve is sealed.

[0013] In a preferred embodiment of the waste heat boiler blowdown recovery device of this utility model, a limiting ring is provided at the other end of the return pipe, and a limiting groove is provided at one end of the rotating sleeve. The limiting ring has an L-shaped cross-section, and the size and position of the limiting ring match the size and position of the limiting groove. The L-shaped cross-section facilitates more stable rotation of the limiting ring and prevents it from loosening and detaching.

[0014] As a preferred embodiment of the waste heat boiler blowdown recovery device of this utility model, the bottom of the circulating pump is provided with a support plate located on the side wall of the waste heat boiler, and the top of the return pipe is provided with a dosing head.

[0015] 3. Beneficial effects: Compared with the prior art, the beneficial effects of this utility model are: This waste heat boiler blowdown recovery device uses a circulating pump to drive cleaning agent water into the waste heat boiler to clean the scale adhering to the inner wall. The water filtered through the filter screen flows back into the waste heat boiler through the return pipe, making it easy to reuse the clean water. By controlling two first solenoid valves to open simultaneously, the water filtered in another delivery pipe flows into the other end of the delivery pipe to backwash the back of the filter screen, making it easy to clean and discharge the scale accumulated on the filter screen and avoid clogging that affects the use. This waste heat boiler blowdown recovery device uses a circulating pump to drive water containing detergent to flow along the return pipe, impacting the turbine blades. The rotation of the turbine blades drives the rotating sleeve to rotate, making it easier to spray the detergent water into the waste heat boiler, so that the detergent covers the inner wall of the waste heat boiler, making it easier to remove scale more thoroughly. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of a waste heat boiler blowdown recovery device according to the present invention; Figure 2 This is a schematic diagram showing the structural breakdown of a waste heat boiler for a waste heat boiler blowdown recovery device according to this utility model. Figure 3 This is a schematic diagram of the ring-cutting component structure of a waste heat boiler blowdown recovery device according to the present invention; Figure 4 This is a structural breakdown diagram of the spraying component of a waste heat boiler blowdown recovery device according to this utility model; Figure 5This is a schematic diagram of the ring cutter pad structure of a waste heat boiler blowdown recovery device according to this utility model.

[0017] The following are the labels in the diagram: 1. Waste heat boiler; 2. Return pipe; 3. Circulating pump; 4. Cleaning assembly; 5. Spraying assembly; 6. Inlet pipe; 7. Outlet pipe; 8. Support plate; 401. Drain pipe; 402. Three-way valve; 403. Conveying pipe; 404. First solenoid valve; 405. Filter screen; 406. Waste trough; 407. Discharge pipe; 408. Second solenoid valve; 409. Collector pipe; 410. Third solenoid valve; 501. Fixing plate; 502. Rotating shaft; 503. Turbine blade; 504. Connecting plate; 505. Rotating sleeve; 506. Spraying trough; 507. Limiting ring; 508. Limiting groove. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] This utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not be construed as limiting the scope of protection of this utility model. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0020] The orientation or positional relationship indicated in the terminology is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0021] The term "connection method" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0023] This utility model provides an overall structural schematic diagram of an embodiment of a waste heat boiler blowdown recovery device, including: Please see Figures 1-5This embodiment of a waste heat boiler blowdown recovery device includes a waste heat boiler 1. A return pipe 2 is welded to the side wall of the waste heat boiler 1. A circulation pump 3 is connected to one end of the return pipe 2 via a flange. The circulation pump 3 controls the circulation of clean water. A cleaning component 4 is welded to the side wall of the waste heat boiler 1. The cleaning component 4 includes a drain pipe 401. A three-way valve 402 is threaded to the other end of the drain pipe 401. The three-way valve 402 controls the water flow from one of the delivery pipes 403 to backflush the filter screen 405 in the other delivery pipe 403, cleaning accumulated scale. Both ends of the three-way valve 402 are threaded to delivery pipes 403. A first solenoid valve 404 is threaded to one end of the inner circumference of each of the two delivery pipes 403. The two first solenoid valves 404 control one of the delivery pipes 403 to stop delivery, preventing backflow of water during circulation and interference. Filter screens 405 are welded to the inner circumference of each of the two delivery pipes 403. The filter screens 405 filter scale in the clean water, preventing blockage of the circulation pump 3. Waste troughs 406 are welded to the bottom of the outer circumference of pipe 403. These troughs are for temporarily storing filtered scale and waste. Discharge pipes 407 are welded to the side walls of both waste troughs 406. Second solenoid valves 408 are threaded onto the inner circumference of both discharge pipes 407. These valves control the discharge of scale and waste from the discharge pipes 407, preventing direct discharge and ensuring water recycling. A collector pipe 409 is welded to the other end of the conveying pipe 403. The collector pipe 409 is used to collect the filtered clean water. The water is re-entered into the waste heat boiler 1 via the circulating pump 3 for easy recycling. A third solenoid valve 410, which is connected to the input end of the circulating pump 3, is threaded onto the inner circumference of the manifold 409. The third solenoid valve 410 is used to control the water flow to stop. A spraying assembly 5 is welded to the other end of the inner circumference of the return pipe 2. An inlet pipe 6 is welded to the top of the side wall of the waste heat boiler 1, and an outlet pipe 7 is welded to the bottom of the side wall of the waste heat boiler 1. The inlet pipe 6 and the outlet pipe 7 are for the inlet and outlet of the waste heat boiler 1. The circulating pump 3 is electrically connected to an external power source.

[0024] It is worth noting that, in order to facilitate more thorough cleaning of scale, the spraying assembly 5 specifically includes a fixed plate 501, a rotating shaft 502 rotatably connected to the side wall of the fixed plate 501, and multiple turbine blades 503 welded to the outer circumference of the rotating shaft 502. The turbine blades 503 are designed to rotate on their own under the impact of water flow, thereby driving the rotating shaft 502 to rotate. A connecting plate 504 is welded to the other end of the rotating shaft 502, and a rotating sleeve 505 is welded to the outer circumference of the connecting plate 504. The rotating sleeve 505 is designed to rotate simultaneously with the rotating shaft 502, which drives the connecting plate 504 to rotate. Multiple spraying slots 506 are provided on the outer circumference of the rotating sleeve 505. The spraying slots 506 are designed to evenly spray water containing cleaning agent onto the inner wall of the waste heat boiler 1.

[0025] Next, in order to adapt to the boiler water environment, the filter screen is specifically designed with a mesh size of 40-80, and the material of the filter screen is 316L stainless steel. The 40-80 mesh size of the filter screen avoids clogging caused by excessive mesh size, while also preventing small particles of scale from passing through due to excessive mesh size. The 316L stainless steel material of the filter screen facilitates high temperature resistance and corrosion prevention.

[0026] Meanwhile, in order to facilitate the removal of boiler scale, specifically, the other end of the discharge pipe 407 is connected to the external waste discharge pipe, and valves are threaded on the inner walls of the inlet pipe 6 and the outlet pipe 7. Through the discharge pipe 407 connected to the external waste discharge pipe, it is easy to remove scale and impurities, and the valves facilitate the control of the water inlet and outlet of the inlet pipe 6 and the outlet pipe 7.

[0027] Furthermore, to facilitate the self-rotation of the rotating sleeve 505, specifically, multiple turbine blades 503 are arranged in an inclined ring array along the rotating shaft 502, and the other end of the rotating sleeve 505 is sealed. The multiple turbine blades 503 arranged in an inclined ring array are convenient to rotate on their own under the impact of water flow. The rotating sleeve 505 with the other end sealed prevents water with added cleaning agent from being directly injected into the waste heat boiler 1.

[0028] It is worth noting that, in order to prevent the rotating sleeve 505 from detaching and falling off, a limiting ring 507 is welded to the other end of the return pipe 2, and a limiting groove 508 is opened at one end of the rotating sleeve 505. The limiting ring 507 has an L-shaped cross-section, and the size and position of the limiting ring 507 match the size and position of the limiting groove 508. The L-shaped limiting ring 507, which matches the size and position of the limiting groove 508, prevents the rotating sleeve 505 from detaching from the return pipe 2.

[0029] Finally, to improve stability, specifically, the bottom of the circulating pump 3 is threadedly connected to a support plate 8 located on the side wall of the waste heat boiler 1, and a dosing head is welded to the top of the return pipe 2. The support plate 8 facilitates the improvement of the stability of the circulating pump 3 during operation, and the dosing head facilitates the addition of cleaning agent.

[0030] In addition, the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. Furthermore, the scope of protection of this utility model does not involve improvements to the internal structure and methods. The device or equipment models mentioned in this article may be as follows: Circulation pump 2: IS65-50-160.

[0031] Combination Figures 1-5 The waste heat boiler blowdown recovery device of this embodiment is used in the following specific process: 1. When this device is needed for waste heat boiler blowdown recovery, add cleaning agent through the dosing head, start the circulation pump 3 to drive the cleaning agent water into the waste heat boiler 1 to clean the scale attached to the inner wall. The scale water flows out from the drain pipe 401 and is filtered by the filter screen 405 through the delivery pipe 403. The filtered water is circulated from the collection pipe 409 and flows back into the waste heat boiler 1 through the return pipe 2 for reuse of clean water. After long-term use, control the three-way valve 402 to close one end and open the other end, control the two first solenoid valves 404 to open at the same time, and the filtered water flows into the other end of the delivery pipe 403 to backwash the back of the filter screen 405 to clean the accumulated scale. Control the second solenoid valve 408 to control the discharge of scale. 2: Rotate the connecting sleeve 505 at one end of the return pipe 2. When the circulating pump 3 drives the water with added detergent to flow along the return pipe 2, it impacts the turbine blade 503, causing the turbine blade 503 to drive the rotating shaft 502 to rotate, thereby causing the connecting plate 504 to rotate and drive the rotating sleeve 505 to rotate, and then causing the detergent water to be sprayed from the spray tank 506 to the inner wall of the waste heat boiler 1.

[0032] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A waste heat boiler blowdown recovery device, characterized in that, The system includes a waste heat boiler (1), a return pipe (2) on the side wall of the waste heat boiler (1), a circulation pump (3) at one end of the return pipe (2), a cleaning component (4) on the side wall of the waste heat boiler (1), the cleaning component (4) including a drain pipe (401), a three-way valve (402) at the other end of the drain pipe (401), conveying pipes (403) at both ends of the three-way valve (402), a first solenoid valve (404) at one end of the inner circumference of each of the two conveying pipes (403), a filter screen (405) on the inner circumference of each of the two conveying pipes (403), and a filter screen (405) at the bottom of the outer circumference of each of the two conveying pipes (403). There is a waste trough (406), and the side walls of the two waste troughs (406) are provided with discharge pipes (407). The inner circumference of the two discharge pipes (407) is provided with a second solenoid valve (408). The other end of the conveying pipe (403) is provided with a collection pipe (409). The inner circumference of the collection pipe (409) is provided with a third solenoid valve (410) connected to the input end of the circulating pump (3). The other end of the inner circumference of the return pipe (2) is provided with a spraying assembly (5). The top of the side wall of the waste heat boiler (1) is provided with a water inlet pipe (6). The bottom of the side wall of the waste heat boiler (1) is provided with a water outlet pipe (7). The circulating pump (3) is electrically connected to an external power source.

2. The waste heat boiler blowdown recovery device according to claim 1, characterized in that, The spraying assembly (5) includes a fixed plate (501), a rotating shaft (502) is rotatably connected to the side wall of the fixed plate (501), a plurality of turbine blades (503) are provided on the outer circumference of the rotating shaft (502), a connecting plate (504) is provided at the other end of the rotating shaft (502), a rotating sleeve (505) is provided on the outer circumference of the connecting plate (504), and a plurality of spraying grooves (506) are opened on the outer circumference of the rotating sleeve (505).

3. The waste heat boiler blowdown recovery device according to claim 2, characterized in that, The filter screen (405) has a mesh size of 40 to 80, and the material of the filter screen (405) is 316L stainless steel.

4. The waste heat boiler blowdown recovery device according to claim 3, characterized in that, The other end of the discharge pipe (407) is connected to the external waste discharge pipe, and valves are provided on the inner circumference of both the water inlet pipe (6) and the water outlet pipe (7).

5. The waste heat boiler blowdown recovery device according to claim 4, characterized in that, Multiple turbine blades (503) are arranged in an inclined ring array along the shaft (502), and the other end of the rotating sleeve (505) is sealed.

6. The waste heat boiler blowdown recovery device according to claim 5, characterized in that, The other end of the return pipe (2) is provided with a limiting ring (507), and one end of the rotating sleeve (505) is provided with a limiting groove (508). The cross-section of the limiting ring (507) is L-shaped, and the size and position of the limiting ring (507) match the size and position of the limiting groove (508).

7. The waste heat boiler blowdown recovery device according to claim 6, characterized in that, The bottom of the circulating pump (3) is provided with a support plate (8) located on the side wall of the waste heat boiler (1), and the top of the return pipe (2) is provided with a dosing head.

Images