Oily sewage treatment equipment

Abstract

The utility model discloses oil-containing sewage treatment equipment, which belongs to the technical field of sewage treatment and comprises a pretreatment part, an oil-containing part and an oil-containing part, the pretreatment part comprises a pretreatment box, the top of the pretreatment box is communicated with a water inlet, the rear side of the pretreatment box is fixedly connected with an inclined pretreatment net, and the bottom of the pretreatment net is fixedly connected with a storage tank; the front side of the storage tank is open, and the pretreatment box corresponding to the front side of the storage tank is provided with an opening and is hinged with a discharge door; a cleaning assembly is correspondingly arranged above the pretreatment net; the graded filtering part comprises three filtering barrels which are connected in series, the filtering barrel at the head end is communicated with the bottom of the pretreatment box through a water inlet pipe, and the filtering barrel at the tail part is communicated with a water outlet pipe. According to the sewage treatment device, sewage can be pretreated, follow-up treatment equipment is prevented from being blocked by impurities, the total treatment efficiency is improved, the impurities intercepted during pretreatment can be conveniently and quickly cleaned, and the device is convenient to maintain and use.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to oily sewage treatment equipment. Background Art

[0002] Oily wastewater refers to wastewater containing lipids (fatty acids, soaps, fats, waxes, etc.) and various oils (mineral oils, animal and vegetable oils). The characteristics of oily wastewater are high COD and BOD, certain odor and color, flammability, easy oxidation and decomposition, generally lighter than water and difficult to dissolve in water. Oily wastewater is a large-scale and widespread industrial wastewater with serious hazards. Its pollution is mainly manifested in the following aspects: deterioration of water quality, harm to aquatic resources; harm to human health; pollution of the atmosphere; impact on crop production; impact on natural landscape; impact on clean natural water sources.

[0003] At present, there are many ways to treat oily wastewater, such as sedimentation separation, coarse granulation, filtration, membrane separation, flotation and adsorption, etc. Among them, filtration is the most direct and convenient, and the cost is relatively low. Due to the presence of certain solid particles in oily wastewater, it is necessary to pre-screen the oily wastewater to prevent the solid particles in the oily wastewater from affecting the subsequent full treatment of the wastewater. After a long period of pretreatment of oily wastewater, the accumulated solid impurities will clog the filter holes and often need to be cleaned. However, the existing filtration device is very inconvenient to clean the pretreatment filter, and it needs to be stopped many times to clean the filter, which affects the efficiency of sewage treatment.

[0004] Therefore, an oily wastewater treatment device is proposed. Utility Model Content

[0005] In order to solve the above technical problems, the utility model proposes an oily wastewater treatment device.

[0006] In order to achieve the above-mentioned purpose, the utility model provides an oily wastewater treatment device, comprising:

[0007] The pretreatment part comprises a pretreatment box, the top of which is connected to a water inlet, a pretreatment net arranged obliquely fixedly connected to the rear side of the pretreatment box, a storage tank fixedly connected to the bottom of the pretreatment net; the front side of the storage tank is open, and an opening is provided on the pretreatment box corresponding to the front side of the storage tank and a discharge door is hingedly connected; a cleaning component is correspondingly arranged above the pretreatment net;

[0008] The graded filtering part includes three filter barrels, which are connected in series. The filter barrel at the head end is connected to the bottom of the pretreatment box through an inlet pipe, and the filter barrel at the tail end is connected to an outlet pipe.

[0009] Preferably, the three filter barrels are connected in sequence through a connecting pipe, the water inlet pipe is connected to the bottom of the front filter barrel, and the water outlet pipe is connected to the top of the rear filter barrel.

[0010] Preferably, the cleaning assembly includes two screws, which are located above the pretreatment net and parallel to the pretreatment net, and are rotatably connected to the inner wall of the pretreatment box through a mounting block; the top end of the screw extends out of the pretreatment box and is transmission-connected to a motor, and the motor is mounted on the pretreatment box through a mounting plate; a sliding plate is threadedly connected between the two screws, a cleaning brush is fixedly connected to the bottom of the sliding plate, and the bottom of the cleaning brush abuts against the pretreatment net.

[0011] Preferably, a peristaltic pump is fixedly connected to both the water inlet pipe and the connecting pipe.

[0012] Preferably, the middle part of the filter barrel is a cylindrical cavity, and the two ends are arc tops. There is a cavity inside the arc top. A partition is fixed to the arc top near the cylindrical cavity. The cylindrical cavity is filled with filter medium, and the cylindrical cavity is sealed and connected to the two arc tops.

[0013] Preferably, flange plates are fixedly connected to the outer sides of both ends of the cylindrical cavity and the end of the arc top close to the cylindrical cavity, the two flange plates close to each other are connected by bolts, and a sealing gasket is abutted between the two flange plates close to each other.

[0014] Preferably, a fixing ring is fixedly connected to the outer side of the cylindrical cavity, and a plurality of legs are circumferentially fixedly connected to the outer side of the fixing ring.

[0015] Preferably, a movable plate is fixedly connected below the pre-treatment part and the graded filtration part, and a movable wheel is fixedly connected below the movable plate.

[0016] Compared with the prior art, the utility model has the following advantages and technical effects:

[0017] The oily sewage enters from the water inlet, and the solid impurities in the water are filtered out by the pretreatment net. The solid impurities can slide into the storage tank by gravity. If the impurities accumulate on the pretreatment net and affect the processing efficiency of the pretreatment net, the cleaning component is started to clean the impurities on the pretreatment net, and the impurities on the pretreatment net are pushed into the storage tank. After a period of time, the impurities in the storage tank accumulate to a certain extent. The discharge door is opened to clean the impurities. The cleaning is convenient. The pretreated oily sewage is graded and filtered through three filter barrels in the graded filtration part to obtain water that meets the discharge standards; the pretreated water can prevent impurities from clogging subsequent processing equipment, thereby improving the overall processing efficiency. In addition, the impurities intercepted during pretreatment can be cleaned quickly and conveniently in the present application, which is convenient for the maintenance and use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of the oily wastewater treatment equipment of the utility model;

[0020] Figure 2 It is a side sectional view of the pretreatment part in the utility model;

[0021] Figure 3 This is a front cross-sectional view of the filter barrel in the utility model;

[0022] Figure 4 for Figure 3 A is an enlarged view of the middle image.

[0023] In the figure: 1. pretreatment box; 2. water inlet; 3. pretreatment net; 4. storage tank; 5. discharge door; 6. filter barrel; 601. cylindrical cavity; 602. arc top; 9. water inlet pipe; 10. water outlet pipe; 11. connecting pipe; 12. screw; 13. mounting block; 14. motor; 15. sliding plate; 16. cleaning brush; 17. partition; 18. filter medium; 19. flange plate; 21. sealing gasket; 20. peristaltic pump; 22. fixing ring; 23. support leg; 24. moving plate; 25. moving wheel. DETAILED DESCRIPTION

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

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] Reference Figures 1 to 4 As shown, this embodiment provides an oily wastewater treatment device, comprising:

[0027] The pretreatment part includes a pretreatment box 1, the top of the pretreatment box 1 is connected to a water inlet 2, a pretreatment net 3 arranged obliquely is fixedly connected to the rear side of the pretreatment box 1, and a storage tank 4 is fixedly connected to the bottom of the pretreatment net 3; the front side of the storage tank 4 is open, and an opening is opened on the pretreatment box 1 corresponding to the front side of the storage tank 4 and a discharge door 5 is hinged; a cleaning component is correspondingly arranged above the pretreatment net 3;

[0028] The graded filtering part includes three filter barrels 6 , which are connected in series. The filter barrel 6 at the head end is connected to the bottom of the pretreatment box 1 through an inlet pipe 9 , and the filter barrel 6 at the tail end is connected to an outlet pipe 10 .

[0029] The oily wastewater enters from the water inlet 2, and the solid impurities in the water are filtered out by the pretreatment net 3. The solid impurities can slide into the storage tank 4 by gravity. If the impurities accumulate on the pretreatment net 3 and affect the processing efficiency of the pretreatment net 3, the cleaning component is started to clean the impurities on the pretreatment net 3, and the impurities on the pretreatment net 3 are pushed into the storage tank 4. After a period of time, the impurities in the storage tank 4 accumulate to a certain extent, and the discharge door 5 is opened to clean the impurities. The cleaning is convenient. The pretreated oily wastewater is graded and filtered by three filter barrels 6 in the graded filtration part to obtain water that meets the discharge standards; the pretreated water can prevent impurities from clogging subsequent processing equipment, thereby improving the overall processing efficiency. In addition, the impurities intercepted during pretreatment can be cleaned conveniently and quickly in the present application, which is convenient for the maintenance and use of the device.

[0030] To further optimize the solution, the three filter barrels 6 are connected in sequence through the connecting pipe 11 , the water inlet pipe 9 is connected to the bottom of the front filter barrel 6 , and the water outlet pipe 10 is connected to the top of the rear filter barrel 6 .

[0031] Among the three filter barrels 6, the bottom of the front filter barrel 6 is connected to the top of the filter barrel 6 behind it through a connecting pipe 11. With this connection, sewage enters from the bottom of the filter barrel 6 and flows out from the top, and the contact time with the filter medium 18 in the filter barrel 6 is longer, and the filtering effect is better.

[0032] A further optimized solution is that the cleaning assembly includes two screws 12, which are located above the pretreatment net 3 and parallel to the pretreatment net 3, and the two screws 12 are rotatably connected to the inner wall of the pretreatment box 1 through a mounting block 13; the top end of the screw 12 extends out of the pretreatment box 1 and is transmission-connected to a motor 14, and the motor 14 is installed on the pretreatment box 1 through a mounting plate; a sliding plate 15 is threadedly connected between the two screws 12, and a cleaning brush 16 is fixedly connected to the bottom of the sliding plate 15, and the bottom of the cleaning brush 16 abuts against the pretreatment net 3.

[0033] The two motors 14 are started and stopped or rotated in reverse at the same time. When the pretreatment net 3 needs to be cleaned, the motor 14 is started to rotate, driving the screw 12 to rotate, so that the sliding plate 15 between the two screws 12 moves from top to bottom along the screw 12, and the cleaning brush 16 on the sliding plate 15 scrapes the impurities on the pretreatment net 3 into the storage tank 4, and then the motor 14 rotates in the reverse direction, and the sliding plate 15 moves upward along the screw 12; the motor 14 can be controlled to rotate forward and reverse multiple times, and the pretreatment net 3 is brushed multiple times until the impurities on the pretreatment net 3 are cleaned.

[0034] According to a further optimized solution, a peristaltic pump 20 is fixedly connected to both the water inlet pipe 9 and the connecting pipe 11 .

[0035] The peristaltic pump 20 provides power for the flow of sewage.

[0036] A further optimized solution is that the middle of the filter barrel 6 is a cylindrical cavity 601, and the two ends are arc tops 602, the arc top 602 is a cavity, a partition 17 is fixedly connected to the arc top 602 near the cylindrical cavity 601, the cylindrical cavity 601 is filled with a filter medium 18, and the cylindrical cavity 601 is sealed and connected to the two arc tops 602.

[0037] The two partitions 17 in the arc top 602 can limit the filter medium 18 in the cylindrical cavity 601 to a certain range. When the filter medium 18 needs to be replaced, the arc top 602 and the cylindrical cavity 601 need only be separated to take out and replace the filter medium 18. The filter medium 18 is preferably PP cotton, activated carbon, or cation exchange resin according to the direction of water flow, which are respectively used to remove suspended matter, organic matter, and minerals in oily wastewater.

[0038] According to a further optimization scheme, flange plates 19 are fixedly connected to the outer sides of the ends of the cylindrical cavity 601 and the end of the arc top 602 close to the cylindrical cavity 601, and the two flange plates 19 close to each other are connected by bolts, and a sealing gasket 21 is abutted between the two flange plates 19 close to each other.

[0039] The flange plates 19 are fastened to each other and connected by bolts for easy installation and removal, and the sealing gasket 21 is convenient for sealing.

[0040] According to a further optimized solution, a fixing ring 22 is fixedly connected to the outer side of the cylindrical cavity 601 , and a plurality of legs 23 are fixedly connected to the outer side of the fixing ring 22 in a circumferential direction.

[0041] The fixing ring 22 and the supporting legs 23 can support the filter barrel 6 and lift it off the bottom surface, thereby providing space for the connection of the bottom pipeline.

[0042] According to a further optimized solution, a movable plate 24 is fixedly connected below the pre-treatment section and the graded filtration section, and a movable wheel 25 is fixedly connected below the movable plate 24 .

[0043] All structures are placed on the moving plate 24, and the moving wheels 25 facilitate the moving plate 24 to carry the device and to change the position of the device.

[0044] The parts not described in detail in the present invention are all conventional technical means known to those skilled in the art.

[0045] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. An oily wastewater treatment device, characterized in that: include: The pretreatment section comprises a pretreatment box (1), the top of the pretreatment box (1) is connected to a water inlet (2), the rear side of the pretreatment box (1) is fixedly connected to an inclined pretreatment net (3), the bottom of the pretreatment net (3) is fixedly connected to a storage tank (4); the front side of the storage tank (4) is open, and the pretreatment box (1) corresponding to the front side of the storage tank (4) is provided with an opening and a discharge door (5) hingedly connected; a cleaning component is correspondingly arranged above the pretreatment net (3); The graded filtering section comprises three filter barrels (6), the three filter barrels (6) are connected in series, the filter barrel (6) at the head end is connected to the bottom of the pretreatment box (1) through a water inlet pipe (9), and the filter barrel (6) at the tail end is connected to a water outlet pipe (10).

2. The oily wastewater treatment equipment according to claim 1 is characterized in that: The three filter barrels (6) are connected in sequence through a connecting pipe (11); the water inlet pipe (9) is connected to the bottom of the front filter barrel (6), and the water outlet pipe (10) is connected to the top of the rear filter barrel (6).

3. The oily wastewater treatment equipment according to claim 1 is characterized in that: The cleaning assembly comprises two screw rods (12), the two screw rods (12) are located above the pretreatment net (3) and parallel to the pretreatment net (3), and the two screw rods (12) are rotatably connected to the inner wall of the pretreatment box (1) through a mounting block (13); the top ends of the screw rods (12) extend out of the pretreatment box (1) and are transmission-connected to a motor (14), and the motor (14) is mounted on the pretreatment box (1) through a mounting plate; a sliding plate (15) is threadedly connected between the two screw rods (12), a cleaning brush (16) is fixedly connected to the bottom of the sliding plate (15), and the bottom of the cleaning brush (16) abuts against the pretreatment net (3).

4. The oily wastewater treatment equipment according to claim 2 is characterized in that: The water inlet pipe (9) and the connecting pipe (11) are both fixedly connected with a peristaltic pump (20).

5. The oily wastewater treatment equipment according to claim 1 is characterized in that: The filter barrel (6) has a cylindrical cavity (601) in the middle and arc tops (602) at both ends. The arc tops (602) are hollow. A partition (17) is fixedly connected to the arc tops (602) near the cylindrical cavity (601). The cylindrical cavity (601) is filled with a filter medium (18). The cylindrical cavity (601) is sealed and connected to the two arc tops (602).

6. The oily wastewater treatment equipment according to claim 5 is characterized in that: Flange plates (19) are fixedly connected to the outer sides of both ends of the cylindrical cavity (601) and the end of the arc top (602) close to the cylindrical cavity (601); the two flange plates (19) close to each other are connected by bolts; and a sealing gasket (21) is abutted between the two flange plates (19) close to each other.

7. The oily wastewater treatment equipment according to claim 5, characterized in that: A fixing ring (22) is fixedly connected to the outside of the cylindrical cavity (601), and a plurality of supporting legs (23) are fixedly connected to the outside of the fixing ring (22) in a circumferential direction.

8. The oily wastewater treatment equipment according to claim 1 is characterized in that: A moving plate (24) is fixedly connected below the pre-treatment section and the graded filtration section, and a moving wheel (25) is fixedly connected below the moving plate (24).

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