Boiler blow-down water recovery equipment
By designing a boiler sewage recycling equipment that includes collection, mixing, precipitation and water purification storage chambers, the design of the reverse output pipeline is used to solve the problem of heat waste in the boiler sewage, and the efficient recycling of water flow and heat is achieved.
Patent Information
- Application Number
- CN202420927964.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The softened water containing a large amount of heat in the boiler sewage discharged is directly discharged, resulting in waste of heat and water. The heat of the treatment water obtained by the prior art after sewage treatment has caused a large loss and the heat cannot be fully utilized.
A boiler sewage recycling equipment is designed, including a collection chamber, mixing chamber, precipitation chamber and water purification storage chamber in the treatment box. The sewage is filtered, precipitated and purified through components such as filter net, stirring paddle and filter. The output pipeline is in reverse to lead the water purification, and the sewage heat is used to heat up the water purification again.
The water flow and heat recovery are realized, resource waste is reduced, the water flow temperature on the heating pipes is ensured, the heat utilization rate in the sewage is improved, and the heat loss is avoided.
Smart Images
Figure CN222795186U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of boiler sewage treatment, in particular to boiler sewage recovery equipment. Background Art
[0002] During the operation of the boiler, the salt content in the boiler water increases continuously due to the continuous evaporation and concentration of the boiler water. At the same time, the concentration of mud, scale and other sediments contained in the boiler water at the bottom of the boiler drum is also getting higher and higher. Through regular or continuous sewage discharge, the mud and other sediments in the boiler drum can be discharged out of the furnace along with the boiler water. This prevents the accumulation of scale in the boiler drum, which affects the water circulation and heat transfer efficiency of the steel furnace, thereby ensuring the safe, stable and economical operation of the boiler.
[0003] In addition to a small amount of scale, silt and other sediments, the vast majority of the sewage is softened water containing a large amount of heat. The direct discharge of this part of water will cause a waste of heat and water, thereby increasing the cost of steam per ton and increasing the amount of steam used. Therefore, recycling this part of sewage can greatly reduce the cost of steam per ton. At present, after the sewage treatment is completed, the purified water is usually added to the heating pipeline to increase the recycling of heat and water resources at the same time. However, since the sewage is treated through multiple processes, the heat of the treated water obtained in the end has already been lost to a large extent, and the heat is still not fully utilized. Utility Model Content
[0004] The purpose of the utility model is to provide a boiler wastewater recovery device, which can simultaneously realize the recovery and utilization of water flow and heat, thereby reducing the waste of resources; in addition, it can also ensure the temperature of the water flow on the heating pipe and improve the utilization rate of the heat in the sewage.
[0005] The utility model adopts the following technical solutions:
[0006] A boiler wastewater recovery device comprises a treatment box, wherein a collecting chamber, a mixing chamber, a sedimentation chamber and a clean water storage chamber are sequentially arranged in the treatment box; wherein a filter screen is arranged on the top of the collecting chamber; a filter is arranged between the sedimentation chamber and the clean water storage chamber; the clean water storage chamber is connected to a water pump arranged on the top of the treatment box through a conveying pipe, and an output pipe is arranged on the output end of the water pump, wherein the output pipe is sequentially coiled from the sedimentation chamber, the mixing chamber and the collecting chamber and then led out of the treatment box.
[0007] Preferably, the filter screen is an upwardly concave arc-shaped structure.
[0008] Preferably, a cleaning shaft driven by a cleaning motor is provided on the processing box shell, and the cleaning shaft is coaxially arranged with the filter screen; a cleaning plate is provided on the cleaning shaft, and a brush in contact with the filter screen is provided on the cleaning plate; a collection box is provided on the processing box on the top side of the filter screen.
[0009] Preferably, the position at the top of the processing box corresponding to the filter screen is set as an upward convex arc structure.
[0010] Preferably, a box door is hingedly connected to a side of the collection box away from the processing box, and a guide slope is obliquely arranged in the collection box from the side away from the box door to the side close to the box door.
[0011] Preferably, a sewage outlet is provided on the processing box, and the processing box is connected to the collection box through the sewage outlet. A baffle is protruding from the top inner side of the sewage outlet.
[0012] Preferably, a stirring paddle is provided in the mixing chamber, and the stirring paddle is driven by a mixing motor arranged at the top of the processing box; a dosing port connected to the inside of the mixing chamber is provided at the top of the processing box; a sewage pipe is provided at the bottom of the sedimentation chamber, and a sewage valve is provided on the sewage pipe.
[0013] Preferably, a partition is provided between the sedimentation chamber and the clean water storage chamber, and the filter is provided on the partition; the filter is a cylindrical structure which is sealed at both ends and hollow inside, and filter membranes are provided on both symmetrical sides of the filter; the filter membrane is located in an overflow channel opened on the partition.
[0014] Preferably, a hollow cleaning pipe is coaxially arranged inside the filter, one end of the cleaning pipe is opened, and a cleaning pump is arranged after extending to the outside of the treatment box, the cleaning pump is connected to the clean water storage chamber through a hose, the cleaning pipe is sealed on a side away from the cleaning pump, and is connected to a driving motor arranged on the treatment box; a cleaning nozzle is arranged on the cleaning pipe; a drain pipe is downwardly opened on the partition below the filter, the drain pipe extends to the bottom of the treatment box, and an arc-shaped sealing plate is movably arranged on the top of the drain pipe, the sealing plate is coaxially arranged with the filter, and the sealing plate is connected to the cleaning pipe; in an initial state, the cleaning nozzle does not correspond to the filter membrane, and the top of one side of the sealing plate is located at the bottom end of the inlet side of the overflow channel.
[0015] Preferably, a liquid level controller is provided in the clean water storage chamber, and a water replenishment port communicating with the clean water storage chamber is provided on the processing box.
[0016] Compared with the prior art, the utility model has the following beneficial effects: after filtering the sewage, the utility model reversely leads the output pipe used to transport clean water from the sedimentation chamber, the mixing chamber and the collection chamber, and can use the heat of the sewage at the corresponding position to heat the clean water in the output pipe again, thereby ensuring the temperature of the clean water in the output pipe and improving the utilization of the heat in the sewage; at the same time, the reverse transmission of the output pipe can also ensure that the clean water is heated in order from low to high, avoiding the heat loss caused by forward transmission, and has a simple structure and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;
[0018] Figure 2 A cross-sectional view of an embodiment of the present application;
[0019] Figure 3 This is a schematic diagram of the structure of the filter according to an embodiment of the present application. DETAILED DESCRIPTION
[0020] The following is a clear and complete description of the present invention in conjunction with the accompanying drawings and embodiments:
[0021] like Figures 1 to 3As shown, a boiler wastewater recovery device described in the utility model comprises a treatment box 1, which is a sealed structure as a whole to reduce heat loss. Specifically, for the convenience of subsequent maintenance, a cover plate can be detachably arranged on the top of the treatment box 1, and a lifting lug is arranged on the cover plate, so that the cover plate can be removed later to clean and maintain the inside of the treatment box 1; a collecting chamber 2, a mixing chamber 3, a sedimentation chamber 4 and a clean water storage chamber 5 are sequentially arranged in the treatment box 1; a water inlet pipe connected to the collecting chamber 2 is arranged on one side of the treatment box 1, and a filter screen 6 is arranged on the top of the collection chamber 2 for preliminary filtering of the sewage first entering the treatment box 1, so as to effectively remove solid impurities in the sewage; the collection chamber 2 and the mixing chamber 3 are connected by a lifting pump 7, and the lifting pump 7 is arranged outside the treatment box 1, and the lifting pump 7 can be automatically operated by the control system according to the liquid level in the collection chamber 2; the mixing chamber 3 and The sedimentation chambers 4 are connected through an overflow port 8 arranged on the partition plate 24, and a stirring paddle 9 is arranged in the mixing chamber 3, and the stirring paddle 9 is driven by a mixing motor 10 arranged at the top of the treatment box 1; a dosing port 11 connected to the inside of the mixing chamber 3 is arranged at the top of the treatment box 1, and a sealing cover 12 is arranged at the dosing port 11. During operation, flocculant is added through the dosing port 11, and the sewage can be fully mixed and contacted with the flocculant under the action of the stirring paddle 9, so as to flocculate and contact impurities. Due to the continuous stirring of the stirring paddle 9, the flocculated dirt will not settle, and enter the sedimentation tank through the overflow port 8 and then settle statically; the dirt generated after standing is discharged through a sewage pipe 13 connected to the bottom of the sedimentation chamber 4, wherein an electromagnetic sewage valve is arranged on the sewage pipe 13, so as to open the sewage discharge operation of the sewage pipe 13 according to demand, and specifically, an external water pump can be connected to the sewage pipe 13 during sewage discharge to quickly discharge the dirt.
[0022] The sedimentation chamber 4 and the clean water storage chamber 5 are connected through a filter 14, and the filter 14 is used to further purify and filter the precipitated water flow to avoid adverse effects on the heating network; the clean water storage chamber 5 is connected to a water pump 35 arranged at the top of the treatment box 1 through a delivery pipe, and the output end of the water pump 35 is connected with an output pipe 34, wherein the output pipe 34 is successively coiled from the sedimentation chamber 4, the mixing chamber 3 and the collection chamber 2 and then led out of the treatment box 1 for connection to the heating network; by leading the output pipe 34 in the reverse direction, the purified water flow can be transported in the direction of gradually increasing temperature, thereby ensuring the gradual heating of the purified water and improving the reuse of heat in the sewage.
[0023] Furthermore, in this embodiment, the filter 6 is an upwardly concave arc-shaped structure to increase the filtration area, ensure filtration efficiency, extend the frequency of shutdown cleaning, and ensure the continuous discharge of sewage. Specifically, a cleaning shaft 16 driven by a cleaning motor 15 is provided on the shell of the treatment box 1. The cleaning shaft 16 is coaxially arranged with the filter 6 and is located inside the filter 6; a cleaning plate 17 is provided on the cleaning shaft 16, and a brush 18 in contact with the filter 6 is provided on the cleaning plate 17; a sewage outlet 19 is provided on the treatment box 1 on one side of the top of the filter 6, and the sewage outlet 19 is connected to a collection box 20 provided on one side of the sub-treatment box 1. When it is necessary to clean the dirt trapped on the filter 6, the cleaning motor 15 can be controlled to turn on. , driving the brush 18 to clean the surface of the filter screen 6. As the brush 18 rotates, the debris can be swept into the collection box 20 for subsequent centralized processing; preferably, the position corresponding to the top of the processing box 1 and the filter screen 6 is set to an upward convex arc structure to ensure that there will be no obstruction when the brush 18 rotates clockwise to the top; the circular motion of the brush 18 cleans the dirt clockwise, which can reduce the cleaning dead angle and avoid the situation where some dirt is difficult to be cleaned into the collection box 20 when the brush 18 swings back and forth.
[0024] In addition, a door 21 is hingedly connected to the side of the collection box 20 away from the treatment box 1, and a guide slope 22 is arranged in an inclined manner from the side away from the door 21 to the side close to the door 21 in the collection box 20 to facilitate the cleaning and removal of the dirt; in addition, a baffle 23 is protruding from the top of the inner side of the sewage outlet 19, and the baffle 23 can provide a certain limit to the cleaned dirt and ensure that the dirt smoothly enters the collection box 20. Since the brush 18 has a certain deformation ability, the baffle 23 will not hinder the brush 18 when it rotates clockwise.
[0025] Furthermore, in this embodiment, a partition 24 is provided between the sedimentation chamber 4 and the clean water storage chamber 5, and the filter 14 is provided on the partition 24; the filter 14 is a cylindrical structure with both ends sealed and the interior hollow, and filter membranes 25 are provided on both symmetrical sides of the filter 14, through which the conduction of the two sides of the filter 14 can be achieved, and the filter membrane 25 is used to remove small particles of debris in the sewage, and further improve the quality of the purified water; an overflow channel 26 is provided on the partition 24, and the filter membrane 25 is located in the overflow channel 26, and through the overflow channel 26, the water flow in the sedimentation chamber 4 can be filtered and purified by the filter 14 and then enter into the clean water storage chamber 5; preferably, a hollow cleaning pipe 27 is coaxially arranged inside the filter 14, one end of the cleaning pipe 27 is opened, and a cleaning pump is arranged after extending to the outside of the treatment box 1. The cleaning pump can be a micro pump. The cleaning pump is connected to the clean water storage chamber 5 through a hose so as to transport the purified water to the cleaning pipe 27 to clean the filter membrane 25 to ensure the filtration efficiency; the cleaning pipe 27 is sealed away from the side of the cleaning pump and is connected to a driving motor 28 arranged on the treatment box 1; a cleaning nozzle 29 is arranged on the cleaning pipe 27. Since only the filter membrane 25 at the inlet end needs to be flushed, Therefore, only one row of cleaning nozzles 29 is required; a drain pipe 30 is downwardly provided on the partition 24 below the filter 14, and the drain pipe 30 extends to the bottom of the processing box 1, and an electromagnetic valve is provided on it. An arc-shaped sealing plate 31 is movably provided at the top of the drain pipe 30, and the sealing plate 31 is coaxially arranged with the filter 14, and the sealing plate 31 is connected to the cleaning pipe 27 by a connecting rod, and the arc length of the sealing plate 31 is less than the arc length between the two filter membranes 25 to ensure sealing; in the initial state, the cleaning nozzle 29 does not correspond to the filter membrane 25, and it is preferred that the cleaning nozzle 29 is in a downward state, and the top of one side of the sealing plate 31 is located at the overflow The bottom end of the inlet side of the flow channel 26; when the filter membrane 25 needs to be cleaned, the cleaning motor drives the cleaning pipe 27 to rotate, so that the cleaning nozzle 29 is directed to the inner side of the filter membrane 25 at the inlet end. At this time, the sealing plate 31 will also enter the overflow channel 26 and block the front end of the filter membrane 25. At this time, the top of the drain pipe 30 is opened. As the spray cleaning work of the filter membrane 25 is carried out, the liquid after spraying and the washed away dirt flow along the gap between the sealing plate 31 and the filter 14 to the drain pipe 30, and are discharged through the drain pipe 30, thereby realizing the cleaning operation of the filter membrane 25. The structure is simple, the operation is easy, and the practicability is strong.
[0026] Furthermore, in this embodiment, a liquid level controller 32 is provided in the clean water storage chamber 5, and a water replenishment port 33 communicating with the clean water storage chamber 5 is provided on the treatment box 1. The water level in the clean water storage tank is detected by the liquid level controller 32. When the amount of water in the clean water storage tank is small, clean water can be replenished therein through the water replenishment port 33 and output through the output pipe 34 to meet the water demand of the heating pipe network system, further enhancing the practicality of the utility model.
[0027] When the utility model is in use, the sewage enters the clean water storage chamber 5 in the treatment box 1 after being filtered, and the purified water is reversely discharged from the sedimentation chamber 4, the mixing chamber 3 and the collection chamber 2 through the output pipe 34 by the water pump 35. The heat of the sewage at the corresponding position can be used to heat the clean water in the output pipe 34 again, thereby ensuring the temperature of the clean water in the output pipe 34 and improving the utilization of the heat in the sewage; at the same time, the reverse transmission of the output pipe 34 can also ensure that the clean water is heated in order from low to high, avoiding the heat loss caused by the forward transmission, and the structure is simple and practical.
Claims
1. A boiler wastewater recovery device, characterized in that: It comprises a treatment box, in which a collecting chamber, a mixing chamber, a sedimentation chamber and a clean water storage chamber are sequentially connected; wherein a filter screen is arranged on the top of the collecting chamber; a filter is arranged between the sedimentation chamber and the clean water storage chamber; the clean water storage chamber is connected to a water pump arranged on the top of the treatment box through a delivery pipe, and an output pipe is arranged on the output end of the water pump, wherein the output pipe is coiled from the sedimentation chamber, the mixing chamber and the collecting chamber in sequence and then led out of the treatment box.
2. The boiler wastewater recovery equipment according to claim 1, characterized in that: The filter screen is an upwardly concave arc structure.
3. The boiler wastewater recovery equipment according to claim 2, characterized in that: The processing box shell is provided with a cleaning shaft driven by a cleaning motor, and the cleaning shaft is coaxially arranged with the filter screen; the cleaning shaft is provided with a cleaning plate, and the cleaning plate is provided with a brush in contact with the filter screen; a collection box is provided on the processing box on one side of the top of the filter screen.
4. The boiler wastewater recovery equipment according to claim 3 is characterized in that: The position at the top of the processing box corresponding to the filter screen is set as an upward convex arc structure.
5. The boiler wastewater recovery equipment according to claim 4, characterized in that: A box door is hingedly connected to a side of the collection box away from the processing box, and a flow guide slope is obliquely arranged in the collection box from the side away from the box door to the side close to the box door.
6. The boiler wastewater recovery equipment according to claim 5, characterized in that: The processing box is provided with a sewage outlet, and the processing box is communicated with the collection box through the sewage outlet. A baffle is protruding from the top inner side of the sewage outlet.
7. The boiler wastewater recovery equipment according to claim 1, characterized in that: The mixing chamber is provided with a stirring paddle, which is driven by a mixing motor arranged at the top of the treatment box; the top of the treatment box is provided with a dosing port connected to the inside of the mixing chamber; the bottom of the sedimentation chamber is provided with a sewage pipe, and the sewage pipe is provided with a sewage valve.
8. The boiler wastewater recovery equipment according to claim 1, characterized in that: A partition is arranged between the sedimentation chamber and the clean water storage chamber, and the filter is arranged on the partition; the filter is a cylindrical structure with sealed ends and a hollow interior, and filter membranes are arranged on both symmetrical sides of the filter; the filter membrane is located in an overflow channel opened on the partition.
9. The boiler wastewater recovery equipment according to claim 8, characterized in that: A hollow cleaning pipe is coaxially arranged inside the filter, one end of the cleaning pipe is opened, and a cleaning pump is arranged after extending to the outside of the treatment box, and the cleaning pump is communicated with the clean water storage chamber through a hose, and the cleaning pipe is sealed on a side away from the cleaning pump and is connected to a driving motor arranged on the treatment box; a cleaning nozzle is arranged on the cleaning pipe; a drain pipe is downwardly opened on the partition below the filter, and the drain pipe extends to the bottom of the treatment box, and an arc-shaped sealing plate is movably arranged on the top of the drain pipe, the sealing plate is coaxially arranged with the filter, and the sealing plate is connected to the cleaning pipe; in an initial state, the cleaning nozzle does not correspond to the filter membrane, and the top of one side of the sealing plate is located at the bottom end of the inlet side of the overflow channel.
10. The boiler wastewater recovery equipment according to claim 1, characterized in that: A liquid level controller is arranged in the clean water storage chamber, and a water replenishing port communicating with the clean water storage chamber is arranged on the processing box.