CN221217272U

CN221217272U - Slag pan device and sewage air floatation system

Info

Publication number: CN221217272U
Application number: CN202323190184.6U
Authority: CN
Inventors: 王成国; 姜鹏程; 王建良; 赵清川; 周坚; 张宁
Original assignee: Shanghai Driling Branch Of Sinopec Offshore Oilfield Services Co; Sinopec Oilfield Service Corp
Current assignee: Shanghai Driling Branch Of Sinopec Offshore Oilfield Services Co; Sinopec Oilfield Service Corp
Priority date: 2023-11-24
Filing date: 2023-11-24
Publication date: 2024-06-25
Anticipated expiration: 2033-11-24

Abstract

The application provides a floating slag tray device and a sewage air floatation system, wherein the floating slag tray device comprises a box body, a floating slag tray and a suction pump. The box body is provided with an upper opening; the upper opening of the box body is used for receiving the scum output by the air floatation machine. The slag plate is arranged in the box body and is at a preset height from the inner bottom surface of the box body, and divides the space in the box body into an upper space and a lower space; the scum tray is provided with a filtering hole for filtering scum. The suction pump comprises an inlet end and an outlet end, wherein the inlet end is connected to the lower space of the box body, and the outlet end is connected to the air floatation machine. The slag pan device can realize dry-wet separation of the scum, and drain the water in the scum as much as possible, thereby being beneficial to the subsequent garbage classification treatment.

Description

Slag pan device and sewage air floatation system

Technical Field

The application relates to the technical field of sewage treatment, in particular to a floating slag tray device and a sewage air floatation system.

Background

The air floatation treatment is that a large number of micro bubbles are generated in water by an air dissolving system, so that air is attached to suspended particles in a highly dispersed micro bubble form, the density is lower than that of water, and the air floats on the water surface by utilizing the buoyancy principle, thereby realizing solid-liquid separation. The prior art apparatus for carrying out an air flotation process is commonly referred to as an air flotation machine.

In the air flotation machine in the prior art, after sewage is treated, the discharged scum is generally directly conveyed into a slag storage barrel through a slag discharge pipeline. However, the discharged scum contains a large amount of water, and is not separated from dry and wet, so that the subsequent garbage classification treatment is not facilitated.

Disclosure of utility model

The embodiment of the application aims to provide a floating slag tray device and a sewage air floatation system, wherein the floating slag tray device can realize dry-wet separation of floating slag, and drain water in the floating slag as much as possible, thereby being beneficial to subsequent garbage classification treatment.

In a first aspect, a slag pan apparatus is provided that includes a tank, a slag pan, and a suction pump. Wherein the box body is provided with an upper opening; the upper opening of the box body is used for receiving the scum output by the air floatation machine. The slag plate is arranged in the box body and is at a preset height from the inner bottom surface of the box body, and divides the space in the box body into an upper space and a lower space; the scum tray is provided with a filtering hole for filtering scum. The suction pump comprises an inlet end and an outlet end, wherein the inlet end is connected to the lower space of the box body, and the outlet end is connected to the air floatation machine.

In one embodiment, the slag pan apparatus further includes a liquid level sensor mounted on a corresponding sidewall of the lower space of the tank for detecting a liquid level in the lower space.

In one embodiment, the slag pan includes a support frame having a filter aperture and a filter screen disposed on the support frame, the filter screen having apertures smaller than the size of the filter aperture.

In one embodiment, a stepped structure is provided on the side wall of the housing at a predetermined depth, and the edge of the support frame rides on the stepped structure.

In one embodiment, the cross section of the inner cavity of the box body is circular, the shape of the supporting frame is disc-shaped, an upright supporting seat is arranged at the center of the box body, and the center of the supporting frame is rotatably arranged at the top end of the supporting seat.

In one embodiment, the support frame comprises a plurality of partitions distributed around the circumference of the center of the support frame, and adjacent partitions are separated by a partition; a plurality of filter holes penetrating from top to bottom are distributed on the bottom surface of each partition; paving a filter screen on the surface of the filter hole of each partition; the outline dimension of the filter screen meets the following conditions: at least the bottom surface of the partition can be completely covered.

In one embodiment, the rotating device is installed on the top of the supporting seat, the bottom of the center of the supporting frame is installed on the rotating device, and the rotating device drives the supporting frame to rotate in a horizontal plane.

In one embodiment, the filter is an acrylic cotton filter.

According to a second aspect of the application, there is also provided a sewage air floatation system, comprising the slag pan device in the above scheme, and further comprising an air floatation machine, wherein the air floatation machine comprises a water inlet and a slag discharge pipe. The outlet end of the suction pump of the floating slag disk device is connected to the water inlet of the air floatation machine, and the slag discharging pipe is used for transferring floating slag in the air floatation machine to the upper opening of the box body of the floating slag disk device. The slag discharging pipe is inclined at a preset angle and comprises a first end and a second end, the first end is positioned above the upper opening of the box body of the slag pan device, the second end is connected with the scum outlet of the air floatation machine, and the first end is lower than the second end.

In one embodiment, a ball valve is mounted on the slag discharge pipe and is positioned proximate the first end of the slag discharge pipe.

Compared with the prior art, the application has the beneficial effects that at least:

In the application, the scum in the air floatation machine is conveyed into the upper space of the box body and falls on the scum tray, most of the scum can be blocked by the scum tray to a certain extent, and the moisture in the scum enters the lower space of the box body through the filtering holes of the scum tray, so that the dry-wet separation of the scum and the wastewater is realized, the moisture content in the scum is reduced, and the subsequent classification treatment of the scum garbage is facilitated. Meanwhile, the waste water in the lower space of the box body can be pumped back to the regulating tank of the air floatation machine by the suction pump for secondary treatment, so that scum in the waste water can be cleaned up as much as possible.

In a further scheme, a filter screen with smaller pores is paved in the filter holes on the support frame, so that the filtering effect on fine scum is improved. And, the filter screen can adopt the acrylic fiber cotton filter screen, and acrylic fiber cotton filter screen surface is fibrous, and the filter screen is not only little and fine, because of its structural specificity, not only can filter tiny dross, does not influence the trafficability characteristic of waste water basically moreover.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a slag pan apparatus according to an embodiment of the present application;

fig. 2 is a schematic structural view of a sewage air floatation system according to an embodiment of the present application;

FIG. 3 is a schematic view showing an exploded construction of a first slag pan apparatus according to an embodiment of the present application;

fig. 4 is a schematic perspective view showing a second type of slag pan apparatus according to an embodiment of the present application;

FIG. 5 is a schematic view showing an exploded construction of a second type of slag pan apparatus according to an embodiment of the present application;

fig. 6 is a vertical sectional view of the slag pan apparatus of fig. 4.

In the figure: 10. a case; 11. a step structure; 20. a slag pan; 201. a filter hole; s1, an upper space; s2, a lower space; 21. a support frame; 211. partitioning; 212. a partition plate; 22. a filter screen; 23. a support base; 24. a rotating device; 30. a suction pump; 40. a liquid level sensor; 100. an air floatation machine; 101. a water inlet; 102. a slag discharge pipe; 103. a ball valve; 104. and a dosing device.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

As shown in fig. 1, the present embodiment first provides a slag pan apparatus including a tank 10, a slag pan 20, and a suction pump 30.

The box body 10 is provided with an upper opening, and the upper opening of the box body 10 is used for receiving scum output by the air floatation machine. The slag pan 20 is disposed in the tank 10 and is spaced apart from the inner bottom surface of the tank 10 by a predetermined height, and the slag pan 20 divides the space in the tank 10 into an upper space S1 and a lower space S2; the dross pan 20 is provided with a filtering hole 201 for filtering dross, i.e. a similar grid-like filtering structure. The suction pump 30 includes an inlet end connected to the lower space S2 of the tank 10 and an outlet end connected to the inside of the air floating machine.

As shown in fig. 2, the dross in the air-float machine 100 is transferred to the upper space S1 of the box 10 and falls on the dross tray 20, so that most of the dross can be blocked by the dross tray 20, and the moisture in the dross enters the lower space S2 of the box 10 through the filtering holes 201 of the dross tray 20, thereby realizing dry-wet separation of the dross and the wastewater, reducing the moisture content in the dross, and facilitating the subsequent classification treatment of the dross garbage.

Meanwhile, for the wastewater in the lower space S2 of the tank 10, the wastewater can be pumped back to the adjusting tank of the air floatation machine by the suction pump 30 for secondary treatment, so that the scum in the wastewater can be cleaned as completely as possible.

In this embodiment, as shown in fig. 1, the slag pan apparatus further includes a liquid level sensor 40 mounted on a corresponding sidewall of the lower space S2 of the tank 10 for detecting a liquid level in the lower space S2. The slag pan device can be additionally provided with a control device, the control device is electrically connected with the liquid level sensor 40 and the suction pump 30, and the control device receives a liquid level signal of the liquid level sensor 40, so as to judge and control whether the suction pump 30 needs to be started or not, and realize automatic control.

In the present embodiment, as shown in fig. 3, the slag pan 20 includes a supporting frame 21 having a filtering hole 201 and a filtering net 22 laid on the supporting frame 21, and the filtering net 22 has pores smaller than the size of the filtering hole 201.

In the dross output by the air floatation machine, some dross particles are tiny, more substances with foam are carried, and the dross disc 20 is only provided with the filtering holes 201, so that the filtering effect on some tiny dross is poor. In the embodiment, the filter screen 22 with smaller pores is paved in the filter holes 201 on the supporting frame 21, so that the filtering effect on fine scum is improved.

Further, in this embodiment, the filter screen 22 is an acrylic cotton filter screen, and the acrylic cotton filter screen is fibrous, so that the filter screen is not only small and compact, but also can filter fine scum due to its structural specificity, and the trafficability of the wastewater is not affected basically, so that an excellent effect of separating scum from the wastewater is achieved, and the intended purpose is achieved. Meanwhile, the acrylic cotton filter screen has the characteristics of acid and alkali resistance, good water resistance, strong mildew resistance and the like. In addition, the filter screen 22 is of a detachable structure, so that the filter screen can be replaced conveniently after being polluted.

In this embodiment, as shown in fig. 3, the supporting frame 21 may be a detachable structure, a step structure 11 may be provided on a sidewall of a predetermined depth of the case 10, and an edge of the supporting frame 21 is overlapped on the step structure 11.

In this embodiment, as shown in fig. 3, the cross section of the inner cavity of the case 10 may be circular, the shape of the supporting frame 21 may be disc-shaped, an upright supporting seat 23 is provided at the center of the case 10, and the center of the supporting frame 21 is rotatably mounted at the top end of the supporting seat 23. By rotating the supporting frame 21, scum with water can be placed at different positions of the supporting frame 21, and the scum is prevented from accumulating at a certain position to block the filtering holes 201 or the filtering net 22.

In this embodiment, as shown in fig. 4 and 5, the supporting frame 21 may include a plurality of partitions 211 distributed around the center circumference thereof, and adjacent partitions 211 are separated by partitions 212. A plurality of filter holes 201 penetrating from top to bottom are distributed on the bottom surface of each partition 211, a filter screen 22 is paved on the surface of the filter hole 201 of each partition 211, and the outline dimension of the filter screen 22 meets the following conditions: at least the bottom surface of the partition 211 can be completely covered. Therefore, the air floatation machine can sequentially fall into scum from different subareas 211, one subarea 211 is full, and the other subarea is rotated to the lower part of the blanking of the air floatation machine, so that the single-position blockage of the scum can be effectively avoided. Meanwhile, for the partition 211 which is not in use, operations such as scum cleaning, filter screen 22 cleaning or filter screen 22 replacement can be performed, and at this time, the partition 211 positioned below the blanking of the air floatation machine normally performs filtering operation, so that non-stop operation and maintenance are realized.

In this embodiment, as shown in fig. 6, a rotating device 24 may be installed on the top of the supporting seat 23, the bottom of the center of the supporting frame 21 is installed on the rotating device 24, and the rotating device 24 drives the supporting frame 21 to rotate in a horizontal plane. The rotating device 24 may be implemented by using various driving motors in combination with gears, belts, etc., which are not illustrated herein.

As shown in fig. 2, this embodiment further provides a sewage air floatation system, which includes the slag pan device in the foregoing solution, and further includes an air floatation machine 100, where the air floatation machine 100 includes a water inlet 101 and a slag discharge pipe 102. Wherein, the outlet end of the suction pump 30 of the floating slag tray device is connected to the water inlet of the air floatation machine 100, and the slag discharging pipe 102 is used for transferring the floating slag in the air floatation machine 100 to the upper opening of the box body 10 of the floating slag tray device.

The slag discharging pipe 102 may be inclined at a predetermined angle, for example, 10 to 45 degrees, and the present embodiment adopts an inclination angle of 15 degrees. Specifically, the slag discharging pipe 102 includes a first end and a second end, the first end is positioned above the upper opening of the tank 10 of the slag pan device, the second end is connected to the slag outlet of the air floating machine 100, and the first end is lower than the second end. The slag discharging pipe 102 is inclined, which is beneficial to the floating slag flowing and discharging.

Further, a ball valve 103 is installed on the slag discharging pipe 102 and is close to the first end of the slag discharging pipe 102, so that the dredging maintenance is convenient at ordinary times.

As shown in fig. 2, the sewage air floatation system of the present embodiment generally has a dosing system 104 for delivering chemicals required for air floatation treatment into the air floatation machine.

The above is only a preferred embodiment of the present application, and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A slag pan apparatus, comprising:

A case (10) having an upper opening; the upper opening of the box body (10) is used for receiving scum output by the air floatation machine;

A slag pan (20) disposed in the tank (10) and spaced apart from the inner bottom surface of the tank (10) by a predetermined height, the slag pan (20) dividing the space in the tank (10) into an upper space (S1) and a lower space (S2); a filtering hole (201) for filtering scum is arranged on the scum tray (20);

Suction pump (30) comprising an inlet end connected to said lower space (S2) of said tank (10) and an outlet end connected to the inside of the air flotation machine.

2. The slag pan device according to claim 1, characterized in that it further comprises a liquid level sensor (40) mounted on a corresponding side wall of the lower space (S2) of the tank (10) for detecting the liquid level in the lower space (S2).

3. The slag pan device according to claim 1, characterized in that the slag pan (20) comprises a support frame (21) with the filter holes (201) and a filter screen (22) laid on the support frame (21), the pores of the filter screen (22) being smaller than the size of the filter holes (201).

4. A slag pan device according to claim 3, characterized in that a step structure (11) is provided at the side wall of the predetermined depth of the tank (10), the edge of the supporting frame (21) riding on the step structure (11).

5. The slag pan device according to claim 4, characterized in that the cross section of the inner cavity of the tank (10) is circular, the outer shape of the supporting frame (21) is disc-shaped, an upright supporting seat (23) is arranged at the central position of the tank (10), and the central position of the supporting frame (21) is rotatably arranged at the top end of the supporting seat (23).

6. The slag pan assembly as claimed in claim 5, wherein the support frame (21) includes a plurality of partitions (211) distributed around a central circumference thereof, adjacent ones of the partitions (211) being separated by a partition (212);

a plurality of filtering holes (201) penetrating from top to bottom are distributed on the bottom surface of each partition (211);

-laying said filtering net (22) on the surface of said filtering holes (201) of each of said sectors (211);

The outline dimension of the filter screen (22) meets the following conditions: at least the bottom surface of the partition (211) can be completely covered.

7. The slag pan device according to claim 6, characterized in that a rotation device (24) is mounted on top of the support base (23), the central bottom of the support frame (21) is mounted on the rotation device (24), and the rotation device (24) drives the support frame (21) to rotate in a horizontal plane.

8. The slag pan device as claimed in any one of claims 3 to 7, characterized in that the filter screen (22) is an acrylic cotton filter screen.

9. A sewage air floatation system, characterized by comprising the slag pan device according to any one of claims 1 to 8;

the device also comprises an air floatation machine (100), wherein the air floatation machine (100) comprises a water inlet (101) and a slag discharge pipe (102);

The outlet end of a suction pump (30) of the floating slag tray device is connected to the water inlet of the air floatation machine (100), and the slag discharging pipe (102) is used for transferring the floating slag in the air floatation machine (100) to the upper opening of a box body (10) of the floating slag tray device;

The slag discharging pipe (102) is inclined at a preset angle, the slag discharging pipe (102) comprises a first end and a second end, the first end is located above an upper opening of a box body (10) of the slag floating disc device, the second end is connected with a slag outlet of the air floatation machine (100), and the first end is lower than the second end.

10. A sewage air floatation system according to claim 9, wherein a ball valve (103) is mounted on the slag discharge pipe (102) and is adjacent to the first end of the slag discharge pipe (102).