Organic wastewater sewage pretreatment device

Abstract

The utility model relates to an organic wastewater sewage pretreatment device which comprises a mixing box and a filter box, a stirring mechanism is arranged in the mixing box, a dosing port is arranged at one end of the top of the mixing box, the filter box is arranged at the other end of the top of the mixing box, a plurality of water outlets are arranged on one side wall of the mixing box from top to bottom, and a water outlet pipe is arranged at the bottom of the filter box. A filter screen is arranged on the inner wall of the filter box, a sleeve is rotationally connected to the center of the filter screen, a rotating shaft is fixedly arranged on the inner wall of the sleeve, a power mechanism for driving the rotating shaft to rotate is arranged on a box cover on the top of the filter box, and a scraper blade is inserted into the outer wall of the sleeve located on the upper portion of the filter screen; a backwashing pipe is detachably mounted on the outer wall of the sleeve positioned at the lower part of the filter screen; mounting plates fixedly connected with the inner wall of the filter box are correspondingly arranged at the top and the bottom of the sleeve. The filter screen cleaning device is convenient to scrape and clean the filter screen, high in cleaning efficiency and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a device for pre-treating organic wastewater. Background Art

[0002] For the treatment of organic wastewater, pretreatment and biochemical treatment methods are generally adopted. The pretreatment method is mainly filtration and coagulation sedimentation, which is used to remove larger block solid dirt, suspended matter and colloidal organic matter in the wastewater. For example, the Chinese utility model patent with publication number CN219507738U discloses an organic wastewater pretreatment device. During treatment, the wastewater is filtered through the filter screen in the filter chamber, and a scraper plate is movably mounted on the filter screen, and the scraper plate moves back and forth to scrape the residue into the collection box to achieve the cleaning of the filter screen. However, this scheme has the following problems: the scraper plate is inconvenient to disassemble, and the residue accumulates on the surface of the scraper plate after long-term use, affecting the scraping effect, and the later replacement and maintenance remain unchanged; and only relying on the scraper plate to scrape, the residue blocked in the filter screen mouth is not cleaned, and the cleaning effect is general; there is a lack of a shielding device at the opening, and the wastewater is easy to splash out during filtration, affecting the use effect. Summary of the invention

[0003] The utility model aims to solve the deficiencies of the prior art and provides an organic wastewater sewage pretreatment device.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an organic wastewater pretreatment device, including a mixing box and a filter box, a stirring mechanism is arranged in the mixing box, a dosing port is arranged at one end of the top of the mixing box, the filter box is arranged at the other end of the top of the mixing box, a side wall of the mixing box is provided with a plurality of drainage ports from top to bottom, a sewage outlet is arranged at the bottom of one side wall, a transparent observation window is arranged on the outer wall of the mixing box, a water outlet pipe is arranged at the bottom of the filter box, a water guide pipe penetrating into the mixing box is arranged on one side of the water outlet pipe, a discharge port is arranged at the bottom of the water outlet pipe, a filter screen is arranged on the inner wall of the filter box, a slot is arranged on one side of the filter screen, a sleeve is rotatably connected to the center of the filter screen, a rotating shaft is fixedly arranged on the inner wall of the sleeve, and a power mechanism for driving the rotating shaft to rotate is arranged on the box cover at the top of the filter box. A scraper is inserted into the outer wall of the sleeve located at the upper part of the filter screen, and a backwash pipe is detachably installed on the outer wall of the sleeve located at the lower part of the filter screen. A plurality of nozzles are arranged on the top of the backwash pipe. The interior of the rotating shaft is hollow and a cavity is left between the bottom of the sleeve. The backwash pipe and the cavity are connected. Mounting plates fixed to the inner wall of the filter box are correspondingly arranged at the top and bottom of the sleeve. An opening corresponding to the upper and lower mounting plates is arranged on one side wall of the filter box. A sealing cover is installed in the opening. A pair of baffles are slidably inserted on the sealing cover, and the top and bottom of the baffles are slidably arranged between the opposite surfaces of the upper and lower mounting plates. The baffles abut against the front and rear walls of the sleeve. The baffles, the mounting plates, the sleeve and the sealing cover together form a closed space connected to the slot, and the scraper and the backwash pipe are located in the closed space.

[0005] In particular, the stirring mechanism includes a first motor, a stirring shaft, and stirring blades. The stirring shaft is rotatably connected between the inner walls of the mixing box on both sides. Several pairs of stirring blades are installed on the outer wall of the stirring shaft. The first motor is installed on the outer wall of the mixing box and drives the stirring shaft to rotate.

[0006] Particularly, the bottom of the water outlet pipe is an inclined surface, and the bottom of the filter box is inclined downward toward the water outlet pipe.

[0007] Particularly, a horizontal plug rod is fixedly arranged on the outer wall of the sleeve, a plug hole corresponding to the plug rod is arranged on the scraper, and the scraper is plugged onto the plug rod through the plug hole.

[0008] In particular, the power mechanism includes an inverted U-shaped support and a second motor. The support is fixed on the top of the box cover, the second motor is installed on the top of the support, and the top of the rotating shaft passes through the support. The rotating shaft and the main shaft of the second motor are transmitted by gears. A feed pipe in the shape of a lying L is installed on one side wall of the support, and the outlet end of the feed pipe is rotatably connected to the top of the rotating shaft.

[0009] Particularly, the outer wall of the sealing cover is provided with a first handle.

[0010] Particularly, a second handle is provided on the side wall of one end of the baffle plate passing through the sealing cover.

[0011] The beneficial effects of the utility model are as follows: the utility model is convenient for scraping and cleaning the filter screen by arranging the slots, rotating shafts, sleeves, plug rods, scrapers, backwash pipes, baffles, mounting plates, sealing covers and power mechanisms, and the residues in the filter screen mesh opening can also be cleaned, with higher cleaning efficiency and better cleaning effect; the scrapers and backwash pipes are easy to disassemble and assemble, and are convenient for later maintenance; the sealing cover can prevent waste water from splashing out, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the position of the baffle and sleeve of the utility model;

[0014] In the figure: 1-mixing box; 2-first motor; 3-stirring shaft; 4-drain outlet; 5-stirring blade; 6-dosing port; 7-filter box; 8-filter screen; 9-box cover; 10-support; 11-second motor; 12-feeding pipe; 13-rotating shaft; 14-mounting plate; 15-scraper; 16-insertion rod; 17-slot; 18-first handle; 19-backwash pipe; 20-nozzle; 21-water outlet; 22-discharge port; 23-water guide pipe; 24-drainage port; 25-sleeve; 26-baffle; 27-second handle; 28-sealing cover;

[0015] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0017] like Figure 1-Figure 2 As shown, an organic wastewater pretreatment device includes a mixing box 1 and a filter box 7, a stirring mechanism is provided in the mixing box 1, a dosing port 6 is provided at one end of the top of the mixing box 1, the filter box 7 is arranged at the other end of the top of the mixing box 1, a water outlet pipe 21 is provided at the bottom of the filter box 7, a water guide pipe 23 that penetrates into the mixing box 1 is provided on one side of the water outlet pipe 21, a plurality of drain ports 4 are provided on one side wall of the mixing box 1 from top to bottom, a sewage outlet 24 is provided at the bottom of one side wall, a transparent observation window is provided on the outer wall of the mixing box 1, the stirring mechanism includes a first motor 2, a stirring shaft 3, and stirring blades 5, the stirring shaft 3 is rotatably connected between the inner walls on both sides of the mixing box 1, a plurality of pairs of stirring blades 5 are installed on the outer wall of the stirring shaft 3, the first motor 2 It is installed on the outer wall of the mixing box 1 and drives the stirring shaft 3 to rotate; specifically, when the wastewater is flocculated and settled, the flocculant enters the mixing box 1 from the dosing port 6, and the wastewater preliminarily filtered by the filter box 1 enters the mixing box 1 from the outlet pipe 21 and the water guide pipe 23. The stirring shaft 3 rotates under the action of the first motor 2, and the stirring blades 5 fully stir and mix the flocculant and the wastewater, and condense the suspended matter and colloidal organic matter in the wastewater into agglomerates, and then settle. The boundary between the upper layer of clean water and the lower layer of sediment in the mixing box 1 can be seen from the transparent observation window, and then the drain port 4 at the corresponding position is selected, and the drain port 4 is opened to discharge the upper layer of clean water to the next treatment process, and the remaining dirt can be discharged from the sewage outlet 24.

[0018] A discharge port 22 is provided at the bottom of the water outlet pipe 21, and the bottom of the water outlet pipe 21 is an inclined surface. The bottom of the filter box 7 is inclined downward in the direction of the water outlet pipe 21, so as to facilitate the drainage of waste water when the filter box 7 is cleaned. A filter screen 8 is provided on the inner wall of the filter box 7, and a slot 17 is provided on one side of the filter screen 8. A sleeve 25 is rotatably connected to the center of the filter screen 8, and a rotating shaft 13 is fixedly provided on the inner wall of the sleeve 25. A power mechanism for driving the rotating shaft 13 to rotate is provided on the box cover 9 at the top of the filter box 7. The power mechanism includes an inverted U-shaped support 10 and a second motor 11. The support 10 is fixed on the top of the box cover 9, and the second motor 11 is installed on the top of the support 10, and the top of the rotating shaft 13 penetrates into the support 10. The rotating shaft 13 and the main shaft of the second motor 11 are driven by gears. A feed pipe 12 in a lying L shape is installed on one side wall of the support 10, and the outlet end of the feed pipe 12 is rotatably connected to the top of the rotating shaft 13.

[0019] The outer wall of the sleeve 25 located at the upper part of the filter 8 is plugged with a scraper 15, and a horizontal plug rod 16 is fixedly arranged on the outer wall of the sleeve 25. The scraper 15 is provided with a plug hole corresponding to the plug rod 16, and the scraper 15 is plugged on the plug rod 16 through the plug hole;

[0020] The outer wall of the sleeve 25 located at the lower part of the filter screen 8 is detachably mounted with a backwash pipe 19, for example, the backwash pipe 19 can be threadedly connected to the outer wall of the sleeve 25, a plurality of nozzles 20 are arranged on the top of the backwash pipe 19, the rotating shaft 13 is hollow inside and a cavity is left between the rotating shaft 13 and the bottom of the sleeve 25, and the backwash pipe 19 is connected to the cavity;

[0021] Mounting plates 14 fixed to the inner wall of the filter box 7 are provided at the top and bottom of the sleeve 25, and an opening corresponding to the upper and lower mounting plates 14 is provided on one side wall of the filter box 7. A sealing cover 28 is installed in the opening. A first handle 18 is provided on the outer wall of the sealing cover 28. A pair of baffles 26 are slidably inserted on the sealing cover 28. A second handle 27 is provided on the side wall of one end of the baffle 26 passing through the sealing cover 28. The top and bottom of the baffle 26 are slidably arranged between the opposite surfaces of the upper and lower mounting plates 14. The baffle 26 abuts against the front and rear walls of the sleeve 25. The baffle 26, the mounting plate 14, the sleeve 25, and the sealing cover 28 together form a closed space connected to the slot 17. The scraper 15 and the backwash pipe 19 are located in the closed space.

[0022] The top center of the mounting plate 14 below can also be protruded, that is, the longitudinal section of the mounting plate 14 below is triangular, and the protruding part does not contact the backwash pipe 19, so that the waste water can slide off the mounting plate 14 easily during cleaning and avoid being trapped on the mounting plate 14.

[0023] Specifically, when the filter screen 8 in the filter box 7 needs to be cleaned, the second handle 27 is pulled outward to prevent the baffle 26 from interfering with the circular motion of the scraper 15 and the backwashing pipe 19, and the second motor 11 is started. The rotating shaft 13 drives the sleeve 25 to rotate, and the sleeve 25 drives the scraper 15 and the backwashing pipe 19 to rotate, and the scraper 15 begins to scrape the residue on the upper surface of the filter screen 8. The feed pipe 12 can pass gas or water as needed to backwash the filter screen 8, flush out the residue blocked in the grid of the filter screen 8, and then be scraped away by the scraper 15. When the scraper 15 scrapes to the slot 17, the wastewater and waste fall into the filter box 7 through the slot 17, and then are discharged through the outlet pipe 21 and the discharge pipe 22. When the scraper 15 and the backwashing pipe 19 need to be cleaned and maintained, the first handle 18 is held to remove the sealing cover 28 and the baffle 26, and then the scraper 15 is directly pulled out and the backwashing pipe 19 is screwed out.

[0024] The utility model has a better cleaning effect on the filter screen 8, and the scraper 15 and the backwashing pipe 19 are easy to disassemble and assemble, and are flexible to use.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element 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.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An organic wastewater pretreatment device, characterized in that: The invention comprises a mixing box (1) and a filter box (7), wherein a stirring mechanism is arranged in the mixing box (1), a drug adding port (6) is arranged at one end of the top of the mixing box (1), and the filter box (7) is arranged at the other end of the top of the mixing box (1), a side wall of the mixing box (1) is provided with a plurality of drainage ports (4) from top to bottom, a sewage outlet (24) is arranged at the bottom of the side wall, a transparent observation window is arranged at the outer wall of the mixing box (1), a water outlet pipe (21) is arranged at the bottom of the filter box (7), and a water outlet pipe (21) is arranged at one side of the water outlet pipe (21) for passing through the mixing box ( 1), a water guide pipe (23) in the filter box (7), a discharge port (22) is provided at the bottom of the water outlet pipe (21), a filter screen (8) is provided on the inner wall of the filter box (7), a slot (17) is provided on one side of the filter screen (8), a sleeve (25) is rotatably connected to the center of the filter screen (8), a rotating shaft (13) is fixedly provided on the inner wall of the sleeve (25), a power mechanism for driving the rotating shaft (13) to rotate is provided on the box cover (9) at the top of the filter box (7), and a scraper (15) is inserted into the outer wall of the sleeve (25) located above the filter screen (8) The outer wall of the sleeve (25) located at the lower part of the filter (8) is detachably mounted with a backwash pipe (19), a plurality of nozzles (20) are arranged at the top of the backwash pipe (19), the interior of the rotating shaft (13) is hollow and a cavity is left between the inner bottom of the sleeve (25), the backwash pipe (19) and the cavity are connected, the top and bottom of the sleeve (25) are correspondingly provided with mounting plates (14) fixedly connected to the inner wall of the filter box (7), and a side wall of the filter box (7) is provided with openings corresponding to the upper and lower mounting plates (14) A sealing cover (28) is installed in the opening, a pair of baffles (26) are slidably inserted on the sealing cover (28), and the top and bottom of the baffle (26) are slidably arranged between the opposite surfaces of the upper and lower mounting plates (14), the baffle (26) abuts against the front and rear walls of the sleeve (25), the baffle (26), the mounting plate (14), the sleeve (25), and the sealing cover (28) together form a closed space connected to the slot (17), and the scraper (15) and the backwash pipe (19) are located in the closed space.

2. The organic wastewater pretreatment device according to claim 1 is characterized in that: The stirring mechanism comprises a first motor (2), a stirring shaft (3), and stirring blades (5); the stirring shaft (3) is rotatably connected between the inner walls of the mixing box (1) on both sides; a plurality of pairs of stirring blades (5) are mounted on the outer wall of the stirring shaft (3); and the first motor (2) is mounted on the outer wall of the mixing box (1) and drives the stirring shaft (3) to rotate.

3. The organic wastewater pretreatment device according to claim 1 is characterized in that: The bottom of the water outlet pipe (21) is an inclined surface, and the bottom of the filter box (7) is inclined downward in the direction of the water outlet pipe (21).

4. The organic wastewater pretreatment device according to claim 1 is characterized in that: A horizontal plug rod (16) is fixedly arranged on the outer wall of the sleeve (25), a plug hole corresponding to the plug rod (16) is arranged on the scraper (15), and the scraper (15) is plugged onto the plug rod (16) through the plug hole.

5. The organic wastewater pretreatment device according to claim 1, characterized in that: The power mechanism comprises an inverted U-shaped support (10) and a second motor (11). The support (10) is fixedly arranged on the top of the box cover (9), the second motor (11) is installed on the top of the support (10), and the top of the rotating shaft (13) passes through the support (10). The rotating shaft (13) and the main shaft of the second motor (11) are driven by gears. A feeding pipe (12) in a lying L shape is installed on one side wall of the support (10), and the outlet end of the feeding pipe (12) is rotatably connected to the top of the rotating shaft (13).

6. The organic wastewater pretreatment device according to claim 1, characterized in that: The outer wall of the sealing cover (28) is provided with a first handle (18).

7. The organic wastewater pretreatment device according to claim 1 is characterized in that: A second handle (27) is provided on the side wall of one end of the baffle (26) passing through the sealing cover (28).

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