Slag-water separation device

Abstract

The utility model discloses a slag-water separation device, which comprises a slag bin, the filtering structure comprises an inlet located in the top, a slag discharging opening located in the bottom and a filtering net located on the side face; the inlet is communicated with the slag bin; the slag discharging door is arranged at the slag discharging opening, the edge of the slag discharging door comprises a baffle arranged around the filter screen, and a gap exists between the baffle and the filter screen; the baffle comprises a first opening; the first opening faces the opening of the water tank structure, and the first opening is located above the water tank structure when the slag discharging door is closed. According to the technical scheme provided by the utility model, the structure is simple, meanwhile, slag-water separation can be efficiently and quickly carried out, and leakage is not easy to occur, so that the effect of avoiding environmental pollution is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of slag-water separation, in particular to a slag-water separation device. Background Art

[0002] The wet slag removal system is one of the important equipment of the pulverized coal boiler of thermal power units, and the proportion of coal-fired units equipped with wet slag removal systems is more than 80%. Its main function is to use a mechanical device to discharge the slag from the boiler into the slag bin, and then separate the slag water through the slag bin water separation device. After separation, the ash is discharged by steam transportation, and the separated water flows into the wastewater pool.

[0003] At present, after the slag of the wet slag removal system enters the slag bin through the slag scoop machine, the wet slag has a high water content, especially in the dehydrated slag bin. The wet slag is stored in the bin body, and the slag and water are separated by the stainless steel filter plates at the bottom of the bin body and on the slag discharge door to discharge as much water as possible. Because the ash particles are fine, it is easy to block the gaps in the filter screen, resulting in a gradual decrease in the effective water filtration area of ​​the filter screen until it loses its water filtration function and is completely blocked. Frequent clogging of the filter screen causes a high water content in the ash, and the slag discharge door is not sealed tightly, causing serious ash and water leakage. The ash water leaks to the factory floor, causing serious pollution to the factory environment. In addition, the high water content of the ash when it is transported out causes the slag truck to drip continuously, which cannot meet environmental protection requirements. Utility Model Content

[0004] The utility model provides a slag-water separation device, which has a simple structure and can efficiently and quickly separate slag-water, and is not prone to leakage, thereby avoiding the effect of causing pollution to the environment.

[0005] The present invention provides a slag-water separation device, comprising:

[0006] Slag bin;

[0007] A filtering structure, the filtering structure comprising an inlet at the top, a slag discharge port at the bottom, and a filter screen at the side; the inlet is connected to the slag bin;

[0008] A slag discharge door, the slag discharge door is arranged at the slag discharge port, the edge of the slag discharge door includes a baffle arranged around the filter screen, and there is a gap between the baffle and the filter screen; the baffle includes a first opening;

[0009] The water trough structure, the first opening is arranged toward the opening of the water trough structure, and the first opening is located above the water trough structure when the slag discharge door is closed.

[0010] Optionally, the filtering structure is a cylindrical structure.

[0011] Optionally, a cross-sectional area of ​​the inlet of the slag bin is larger than a cross-sectional area of ​​the inlet of the filtering structure.

[0012] Optionally, the area S1 of the filter screen and the cross-sectional area S2 of the slag discharge port satisfy: S1>10*S2.

[0013] Optionally, the porosity of the filter mesh is greater than 0.9, wherein the porosity is the ratio of the total area of ​​the filter holes of the filter mesh to the total area of ​​the filter mesh.

[0014] Optionally, the filter net includes multiple filter membrane layers, and each filter membrane layer is provided with a plurality of filter holes.

[0015] Optionally, along the direction in which the slag water passes through the filter screen, the apertures of the filter holes on the multiple filter membrane layers gradually increase.

[0016] Optionally, the height of the baffle is greater than or equal to 15 mm.

[0017] Optionally, the slag-water separation device further includes:

[0018] a drainage pipe, connected to the water tank structure;

[0019] A valve is arranged on the drainage pipe; when the valve is opened, the water in the water tank structure is discharged through the drainage pipe.

[0020] Optionally, the slag-water separation device further includes:

[0021] A slideway structure, wherein the slag discharge door is arranged on the slideway structure;

[0022] The slag discharge door control structure is connected to the slag discharge door and is used to drive the slag discharge door to slide on the slideway structure.

[0023] The solution provided by the utility model is that the slag-water separation device includes a slag bin, and the filtering structure includes an inlet at the top, a slag discharge port at the bottom, and a filter screen at the side. The inlet is connected to the slag bin, so that the ash containing water entering the slag bin can directly fall into the filtering structure. The slag discharge door is arranged at the slag discharge port, and the edge of the slag discharge door includes a baffle arranged around the filter screen, and there is a gap between the baffle and the filter screen. The baffle includes a first opening, so that the water separated by the filter screen can enter the gap between the baffle and the filter screen. The first opening is arranged toward the opening of the water tank structure, and the first opening is located above the water tank structure when the slag discharge door is closed, so that the water in the gap between the baffle and the filter screen can flow into the water tank structure through the first opening to collect water. After the slag-water separation is completed, the slag discharge door is controlled to open so that the separated slag is discharged. In this way, the slag-water separation device can realize the efficient automatic separation of slag and water, and the separated water can be recycled to save water resources. In addition, the slag-water separation device has a simple structure and is not prone to leakage, thereby avoiding environmental pollution.

[0024] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, although the drawings described below are some specific embodiments of the utility model, for those skilled in the art, the basic concepts of the device structure, driving method and manufacturing method disclosed and suggested by the various embodiments of the utility model can be expanded and extended to other structures and drawings. Undoubtedly, these should all be within the scope of the claims of the utility model.

[0026] Figure 1 A schematic diagram of a front cross-sectional structure of a slag-water separation device provided in an embodiment of the utility model;

[0027] Figure 2 A schematic diagram of the top view of a slag-water separation device provided in an embodiment of the utility model;

[0028] Figure 3 A partial structural schematic diagram of a filter screen provided in an embodiment of the utility model;

[0029] Figure 4 A schematic diagram of a front cross-sectional structure of another slag-water separation device provided in an embodiment of the utility model;

[0030] Figure 5 The present invention is a front view cross-sectional structural schematic diagram of another slag-water separation device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the following will refer to the drawings in the embodiments of the utility model to clearly and completely describe the technical solution of the utility model through the implementation method. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the basic concepts disclosed and suggested by the embodiments of the utility model, all other embodiments obtained by those skilled in the art are within the scope of protection of the utility model.

[0032] Figure 1 A schematic diagram of a front cross-sectional structure of a slag-water separation device provided in an embodiment of the utility model, Figure 2 A schematic diagram of a top view of a slag-water separation device provided in an embodiment of the utility model, combined with reference Figure 1 and Figure 2 As shown, the slag-water separation device comprises: a slag bin 10, a filtering structure 20 comprising an inlet 21 at the top, a slag discharge port 22 at the bottom, and a filter screen 23 at the side, and the inlet 21 is connected to the slag bin 10. A slag discharge door 30 is arranged at the slag discharge port 22, and the edge of the slag discharge door 30 comprises a baffle 31 arranged around the filter screen 23, and there is a gap between the baffle 31 and the filter screen 23; the baffle 31 comprises a first opening 310; and a water trough structure 40, wherein the first opening 310 is arranged toward an opening 41 of the water trough structure 40, and the first opening 310 is located above the water trough structure 40 when the slag discharge door 30 is closed.

[0033] Specifically, when separating ash and slag containing water from slag and water, it is necessary to ensure that the slag discharge door 30 is in a closed state, and then the ash and slag containing water can enter the filter structure 20 through the slag bin 10, and finally fall above the slag discharge door 30. Since the sides of the filter structure 20 are all filter screens 23, the ash and slag containing water will be filtered through the filter screen 23 after flowing and contacting the filter screen 23, and the filtered water can enter the gap between the baffle 31 and the filter screen 23, while the ash and slag that cannot pass through the filter screen 23 will continue to remain in the filter structure 20. Further, since the baffle 31 is provided with a first opening 310, the filtered water can flow into the water tank structure 40 through the first opening 310, and after the filtered water fully flows into the water tank structure 40, the slag discharge door 30 can be controlled to open, so that the separated ash and slag is discharged through the slag discharge port 22. It should be noted that, since the filter screen 23 is arranged on the side wall of the filter structure 20, compared with the prior art in which the filter screen is arranged at the bottom, it is possible to avoid ash clogging the filter screen 23 to reduce the filtration efficiency, and at the same time greatly increase the amount of water separation. When the slag discharge door 30 is opened, the ash remaining on the filter screen 23 will fall due to its own gravity and be discharged through the slag discharge port 22, so that the filtered ash can be prevented from clogging the filter screen 23, ensuring the cleanliness of the filter screen 23 and improving the filtration effect and utilization rate of the filter screen 23.

[0034] In this embodiment, the slag-water separation device includes a slag bin, and the filtering structure includes an inlet at the top, a slag discharge port at the bottom, and a filter screen at the side. The inlet is connected to the slag bin, so that the ash containing water entering the slag bin can directly fall into the filtering structure. The slag discharge door is arranged at the slag discharge port, and the edge of the slag discharge door includes a baffle arranged around the filter screen, and there is a gap between the baffle and the filter screen. The baffle includes a first opening, so that the water separated by the filter screen can enter the gap between the baffle and the filter screen. The first opening is arranged toward the opening of the water tank structure, and the first opening is located above the water tank structure when the slag discharge door is closed, so that the water in the gap between the baffle and the filter screen can flow into the water tank structure through the first opening to collect water. After the slag-water separation is completed, the slag discharge door is controlled to open so that the separated slag is discharged. In this way, the slag-water separation device can realize efficient and automatic separation of slag and water, and the separated water can be recycled to save water resources. In addition, the slag-water separation device has a simple structure and is not prone to leakage, thereby avoiding environmental pollution.

[0035] Optionally, the filter screen 23 may be made of corrosion-resistant stainless steel or other corrosion-resistant materials, which is not specifically limited here.

[0036] Optionally, the volume of the water tank structure 40 is much larger than the volume of water separated from the slag-water separation to prevent the water in the water tank structure 40 from overflowing the water tank and causing environmental pollution. Exemplarily, the maximum time for each slag-water separation is 40 minutes. By measuring the flow rate of water passing through the filter screen 23 per unit time, the maximum dewatered water volume of each slag-water separation performed by the slag-water separation device can be obtained according to the product of the flow rate and the maximum time for the slag-water separation. In this way, the volume of the water tank structure can be designed to be 3 to 5 times the maximum dewatered water volume.

[0037] Optional, continue to refer to Figure 1 As shown, the filtering structure 20 is a cylindrical structure.

[0038] Specifically, setting the filter structure 20 to a cylindrical structure can ensure that the entire side of the filter structure 20 has no corners caused by bending, that is, the filtering surface of the entire filter mesh 23 is smooth, thereby preventing the filtered ash from remaining at the corners of the filter mesh 23 and clogging the filter mesh 23.

[0039] Optional, continue to refer to Figure 1 and Figure 2 As shown, the cross-sectional area of ​​the inlet of the slag bin 10 is larger than the cross-sectional area of ​​the inlet 21 of the filtering structure 20 .

[0040] Specifically, the slag bin 10 can be a truncated cone structure, and the cross-sectional area of ​​its inlet is larger than the cross-sectional area of ​​the inlet 21 of the filter structure 20. On the one hand, its opening is large enough to allow a larger volume of ash containing water to enter the slag bin 10. On the other hand, since the side of the slag bin 10 is a smooth side, the ash attached to the side of the slag bin 10 can quickly flow into the filter structure 20.

[0041] Optional, continue to refer to Figure 1 As shown, the area S1 of the filter screen 23 and the cross-sectional area S2 of the slag discharge port satisfy: S1>10*S2.

[0042] Specifically, the larger the area of ​​the filter 23, the more conducive it is to quickly separate the slag from the water, and avoid the slag from concentrating on the same position of the filter 23 to cause blockage, thereby reducing the filtering effect and prolonging the filtering time. In this way, the area S1 of the filter 23 can be set to be greater than 10 times the cross-sectional area S2 of the slag outlet, so that the slag containing water can be quickly filtered.

[0043] It should be noted that the specific values ​​of S1 and S2 can be set according to actual conditions and are not specifically limited here.

[0044] Optionally, the porosity of the filter mesh 23 is greater than 0.9, wherein the porosity is the ratio of the total area of ​​the filter holes of the filter mesh 23 to the total area of ​​the filter mesh 23 .

[0045] Specifically, the filter screen 23 may be provided with a plurality of filter holes, and the filter holes of the filter screen 23 may be arranged in any manner, which is not specifically limited here. The size of the filter holes may be set according to actual conditions, which is not specifically limited here. It is understandable that, when the area of ​​the filter screen 23 remains unchanged, the more filter holes there are on the filter screen 23, or the larger the total area of ​​the filter holes, the more conducive it is to the separation of slag and water. In this way, the porosity of the filter screen 23 is greater than 0.9, which can further accelerate the separation of slag and water from the ash containing water.

[0046] Optional, Figure 3 A partial structural diagram of a filter screen provided by an embodiment of the utility model is shown in FIG. Figure 3 As shown, the filter net 23 includes multiple filter membrane layers 230 , and each filter membrane layer 230 is provided with a plurality of filter holes 231 .

[0047] The specific number of filter membrane layers 230 in the filter net 23 can be set according to actual conditions, and can be 2 layers, 3 layers or more layers, which is not specifically limited here. The specific arrangement of the filter holes 231 on each filter membrane layer 230 is not specifically limited here. In addition, the arrangement of the filter holes 231 on different filter membrane layers 230 can be the same or different, which is not specifically limited here. Figure 3 This is shown for exemplary purposes only and is not intended to be limiting.

[0048] For the same filter membrane layer 230 , the shapes of all the filter holes 231 thereon may be the same or different, and the pore sizes of the filter holes 231 may be the same or different, which are not specifically limited here and may be set according to actual conditions.

[0049] Optional, continue to refer to Figure 3 , along the direction of the slag water passing through the filter screen 23 (i.e. Figure 3 In the direction indicated by the middle arrow), the apertures of the filter holes 231 on the multi-layer filter membrane layer 230 gradually increase.

[0050] Specifically, the ash containing water will flow along Figure 3 The direction indicated by the middle arrow passes through the filter screen 23. Considering that the ash may also pass through the filter screen 23, the pore size of the filter hole 231 on the first filter membrane layer 230 through which the slag water passes can be set to be the smallest, which can prevent the water separated by the filter screen 230 from still containing a lot of ash. Furthermore, the pore size of the filter hole 231 on the multi-layer filter membrane layer 230 is set to gradually increase along the direction in which the slag water passes through the filter screen 23, which can speed up the filtering speed.

[0051] Optional, continue to refer to Figure 1 As shown, the height h of the baffle 31 is greater than or equal to 15 mm.

[0052] Specifically, considering that the flow rate of water separated by the filter screen 23 is very large, which may be greater than the flow rate of water passing through the first opening 310, it is necessary to ensure that the baffle 31 has a certain height to prevent water from overflowing. In this way, the height h of the baffle 31 can be set to be greater than or equal to 15 mm, which can ensure that the separated water can reliably flow into the water tank structure 40 through the first opening 310.

[0053] Optional, Figure 4 A schematic diagram of a front cross-sectional structure of another slag-water separation device provided by an embodiment of the utility model, as shown in FIG. Figure 4 As shown, the slag-water separation device also includes: a drainage pipe 50 connected to the water tank structure 40; a valve 60, which is arranged on the drainage pipe 50; the valve 60 is used to allow the water in the water tank structure 40 to be discharged through the drainage pipe 50 when it is opened.

[0054] Specifically, the valve 60 may be an electric valve or a mechanical valve, which is not specifically limited herein. When the valve 60 is opened, the water in the water tank structure 40 may be discharged through the drainage pipe 50 and then recycled to achieve the effect of saving water.

[0055] Optional, Figure 5 A front cross-sectional structural diagram of another slag-water separation device provided by an embodiment of the utility model is shown as follows: Figure 5 As shown, the slag-water separation device also includes: a slide structure 70 , on which the slag discharge door 30 is arranged; and a slag discharge door control structure 80 , which is connected to the slag discharge door 30 and is used to drive the slag discharge door 30 to slide on the slide structure 70 .

[0056] The slag discharge door control structure 80 may be a pneumatic control structure or an electrical control structure, which is not specifically limited here. It only needs to control the slag discharge door 30 to be able to open or close automatically.

[0057] Further optionally, the slag discharge door control structure 80 may also include a timer, which can control the slag discharge door 30 to be opened or closed at a predetermined time, thereby making the entire slag-water separation device more intelligent.

[0058] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments, combinations and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A slag-water separation device, characterized in that: include: Slag bin; A filtering structure, the filtering structure comprising an inlet at the top, a slag discharge port at the bottom, and a filter screen at the side; the inlet is connected to the slag bin; A slag discharge door, the slag discharge door is arranged at the slag discharge port, the edge of the slag discharge door includes a baffle arranged around the filter screen, and there is a gap between the baffle and the filter screen; the baffle includes a first opening; The water trough structure, the first opening is arranged toward the opening of the water trough structure, and the first opening is located above the water trough structure when the slag discharge door is closed.

2. The slag-water separation device according to claim 1, characterized in that: The filtering structure is a cylindrical structure.

3. The slag-water separation device according to claim 2, characterized in that: The cross-sectional area of ​​the inlet of the slag bin is larger than the cross-sectional area of ​​the inlet of the filtering structure.

4. The slag-water separation device according to claim 1, characterized in that: The area S1 of the filter screen and the cross-sectional area S2 of the slag discharge port satisfy: S1>10*S2.

5. The slag-water separation device according to claim 1, characterized in that: The porosity of the filter mesh is greater than 0.9, wherein the porosity is the ratio of the total area of ​​the filter holes of the filter mesh to the total area of ​​the filter mesh.

6. The slag-water separation device according to claim 1, characterized in that: The filter net comprises multiple filter membrane layers, and each filter membrane layer is provided with multiple filter holes.

7. The slag-water separation device according to claim 6, characterized in that: Along the direction in which the slag water passes through the filter screen, the apertures of the filter holes on the multiple filter membrane layers gradually increase.

8. The slag-water separation device according to claim 1, characterized in that: The height of the baffle is greater than or equal to 15 mm.

9. The slag-water separation device according to claim 1, characterized in that: The slag-water separation device also includes: a drainage pipe, connected to the water tank structure; A valve is arranged on the drainage pipe; when the valve is opened, the water in the water tank structure is discharged through the drainage pipe.

10. The slag-water separation device according to claim 1, characterized in that: The slag-water separation device also includes: A slideway structure, wherein the slag discharge door is arranged on the slideway structure; The slag discharge door control structure is connected to the slag discharge door and is used to drive the slag discharge door to slide on the slideway structure.

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