Denitrification equipment for wastewater

Abstract

The denitrification equipment comprises a reaction tank, a circular filter screen is arranged at the top of the reaction tank, an annular groove is formed in the top of the reaction tank and located on the outer side of the circular filter screen, a rack is arranged on the side wall of the reaction tank, and a water inlet hopper is arranged at the top of the rack; a stirring structure sequentially penetrating through the water inlet hopper and the circular filter screen is arranged on the rack, a scraping structure is arranged at the rotating end of the stirring structure, and a filter pressing structure communicated with the annular groove is arranged on the side wall of the reaction tank. The stirring structure drives the scraping structure to scrape impurities on the circular filter screen, the problems that the filter screen is easily blocked and the filtering speed is influenced after long-term use are avoided, the filtered impurities enter the filter pressing structure, and a small amount of nitrogen-containing wastewater in the impurities is extruded and filtered into the reaction tank for reaction through the filter pressing structure, so that the reaction efficiency is improved. The overall treatment effect of the wastewater is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, and specifically relates to denitrification equipment for wastewater. Background Art

[0002] With the development of society, the amount of nitrogen-contaminated wastewater discharged from domestic sewage and industrial sewage is increasing. In order to avoid the direct discharge of total nitrogen wastewater and pollute the water body, denitrification equipment is needed to purify the total nitrogen wastewater.

[0003] At present, in the prior art, during the pretreatment of wastewater, a filter is generally used to screen out impurities in the wastewater, especially larger impurities. However, long-term use can easily lead to clogging of the filter, affecting the filtration speed, and there is still a small amount of nitrogen-containing wastewater in the filtered impurities, thereby affecting the overall treatment effect of the wastewater. For this reason, a denitrification device for wastewater is provided. Utility Model Content

[0004] The purpose of the utility model is to provide a denitrification device for wastewater to solve the problem that the filter screen is easily blocked during long-term use, affecting the filtration speed, and a small amount of nitrogen-containing wastewater still exists in the filtered impurities, thereby affecting the overall treatment effect of the wastewater.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a denitrification device for wastewater, comprising a reaction tank, a circular filter screen is provided on the top of the reaction tank, an annular groove is provided on the top of the reaction tank and located on the outside of the circular filter screen, a frame is provided on the side wall of the reaction tank, a water inlet bucket is provided on the top of the frame, a stirring structure that passes through the water inlet bucket and the circular filter screen in sequence is provided on the frame, a scraping structure is provided on the rotating end of the stirring structure, and a filter press structure connected to the annular groove is provided on the side wall of the reaction tank.

[0006] Preferably, the filter press structure includes a cavity arranged on the side wall of the reaction tank and connected to the annular groove, a first electric cylinder is provided on the side away from the opening end of the cavity, the output end of the first electric cylinder extends into the cavity and is provided with an extrusion plate, a second electric cylinder is provided on the side close to the opening end of the cavity, the output end of the second electric cylinder extends into the cavity and is provided with a baffle, a filter screen is provided on the side wall of the reaction tank and located on the inner side of the cavity, and a first scraper is provided on the side wall of the extrusion plate close to the filter screen.

[0007] Preferably, the stirring structure includes a driving motor arranged on the top of the frame, and the driving end of the driving motor is provided with a rotating rod that passes through the water inlet bucket and the circular filter screen in sequence and extends into the reaction tank, and a plurality of evenly distributed stirring rods are provided on the side wall of the rotating rod and located on the inner side of the reaction tank.

[0008] Preferably, the axis center line of the rotating rod coincides with the axis center line of the circular filter screen, and the side wall of the rotating rod is rotatably connected to the circular filter screen.

[0009] Preferably, the scraping structure includes an L-shaped connecting rod arranged on the side wall of the rotating rod, the long rod end of the L-shaped connecting rod is provided with a second scraper on the side wall close to the circular filter screen, and the short rod end of the L-shaped connecting rod extends into the annular groove and is provided with a third scraper.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a denitrification device for wastewater, which, during wastewater pretreatment, drives the scraping structure through the stirring structure to scrape off impurities on the circular filter screen, thereby avoiding the problem of clogging of the filter screen and affecting the filtration speed during long-term use; the filtered impurities enter the filter press structure, and a small amount of nitrogen-containing wastewater in the impurities is squeezed and filtered into the reaction tank through the filter press structure for reaction, thereby ensuring the overall treatment effect of the wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the main cross-sectional structure of the filter press structure of the utility model;

[0013] Figure 3 It is a right sectional structural schematic diagram of the utility model;

[0014] Figure 4 for Figure 2 A local enlarged structural schematic diagram;

[0015] Figure 5 for Figure 3 Schematic diagram of the local enlarged structure at point B.

[0016] In the figure: 1, reaction tank; 2, circular filter screen; 3, annular groove; 4, frame; 5, water inlet bucket; 6, stirring structure; 6-1, driving motor; 6-2, rotating rod; 6-3, stirring rod; 7, scraping structure; 7-1, L-shaped connecting rod; 7-2, second scraper; 7-3, third scraper; 8, filter pressing structure; 8-1, cavity; 8-2, first electric cylinder; 8-3, extrusion plate; 8-4, second electric cylinder; 8-5, baffle; 8-6, filter screen; 8-7, first scraper. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-5 The utility model provides a technical solution: a denitrification device for wastewater, comprising a reaction tank 1, a circular filter screen 2 is arranged on the top of the reaction tank 1, an annular groove 3 is arranged on the top of the reaction tank 1 and located on the outside of the circular filter screen 2, a frame 4 is arranged on the side wall of the reaction tank 1, a water inlet bucket 5 is arranged on the top of the frame 4, a stirring structure 6 is arranged on the frame 4, which passes through the water inlet bucket 5 and the circular filter screen 2 in sequence, a scraping structure 7 is arranged on the rotating end of the stirring structure 6, and a filter press structure 8 connected with the annular groove 3 is arranged on the side wall of the reaction tank 1. When pre-treating the wastewater, the scraping structure 7 is driven by the stirring structure 6 to scrape the impurities on the circular filter screen 2, thereby avoiding the problem that the filter screen is easily blocked and the filtering speed is affected in long-term use. The filtered impurities enter the filter press structure 8, and a small amount of nitrogen-containing wastewater in the impurities is squeezed and filtered into the reaction tank 1 by the filter press structure 8 for reaction, thereby ensuring the overall treatment effect of the wastewater.

[0019] Specifically, the filter press structure 8 includes a cavity 8-1 arranged on the side wall of the reaction pool 1 and connected to the annular groove 3, a first electric cylinder 8-2 is arranged on the side away from the opening end of the cavity 8-1, the output end of the first electric cylinder 8-2 extends into the cavity 8-1 and is provided with an extrusion plate 8-3, a second electric cylinder 8-4 is arranged on the side close to the opening end of the cavity 8-1, the output end of the second electric cylinder 8-4 extends into the cavity 8-1 and is provided with a baffle 8-5, a filter screen 8-6 is arranged on the side wall of the reaction pool 1 and located on the inner side of the cavity 8-1, and a side wall of the extrusion plate 8-3 close to the filter screen 8-6 is provided The first scraper 8-7, when the impurities cleaned out by the circular filter screen 2 enter the inner side of the cavity 8-1, starts the first electric cylinder 8-2 to drive the extrusion plate 8-3 to move, so that the impurities with a small amount of nitrogen-containing wastewater are close to the baffle 8-5 for extrusion, and a small amount of nitrogen-containing wastewater returns to the reaction tank through the filter screen 8-6, starts the second electric cylinder 8-4 to drive the baffle 8-5 to rise, and the electric cylinder 8-1 continues to drive the extrusion plate to move to discharge the impurities, so that a small amount of nitrogen-containing wastewater in the impurities is squeezed and filtered into the reaction tank for reaction through the filter press structure, thereby ensuring the overall treatment effect of the wastewater.

[0020] Specifically, the stirring structure 6 includes a driving motor 6-1 arranged on the top of the frame 4, and the driving end of the driving motor 6-1 is provided with a rotating rod 6-2 which passes through the water inlet bucket 5 and the circular filter screen 2 in sequence and extends into the reaction tank 1. A number of evenly distributed stirring rods 6-3 are provided on the side wall of the rotating rod 6-2 and located on the inner side of the reaction tank 1. When in use, the driving motor 6-1 is started to drive the rotating rod 6-3 and the stirring rod 6-3 to rotate, thereby achieving stirring of the wastewater in the reaction tank and ensuring the effect of the wastewater mixing reaction in the reaction tank.

[0021] Specifically, the axis line of the rotating rod 6-2 coincides with the axis line of the circular filter screen 2, ensuring the stability of the equipment, and the side wall of the rotating rod 6-2 is rotatably connected to the circular filter screen 2, effectively preventing impurities from entering the reaction tank through the gap between the rotating rod 6-2 and the circular filter screen 2, thereby ensuring the filtering effect on the wastewater.

[0022] Specifically, the scraping structure 7 includes an L-shaped connecting rod 7-1 arranged on the side wall of the rotating rod 6-2, and the long rod end of the L-shaped connecting rod 7-1 is provided with a second scraper 7-2 on the side wall close to the circular filter screen 2, and the short rod end of the L-shaped connecting rod 7-1 extends into the annular groove 3 and is provided with a third scraper 7-3. The rotating rod 6-2 of the stirring structure 6 drives the L-shaped connecting rod 7-1 to rotate, and the impurities on the circular filter screen 2 are scraped into the inner side of the annular groove 3 by the second scraper 7-2, and the impurities in the annular groove 3 are scraped into the filter press structure 8 by the third scraper 7-3. The impurities on the circular filter screen 2 are cleaned by the cooperation between the second scraper 7-2 and the third scraper 7-3, thereby avoiding the problem of clogging of the filter screen and affecting the filtration speed during long-term use.

[0023] Working principle: During use, the utility model first allows wastewater to enter from the water inlet hopper 5, and enter the interior of the reaction tank 1 through the circular filter screen 2. The stirring structure 6 is started to stir the wastewater, while driving the scraping structure 7 to scrape the impurities on the circular filter screen 2. The scraped impurities enter the filter press structure 8, and the filter press structure 8 is started to squeeze and filter a small amount of nitrogen-containing wastewater in the impurities into the reaction tank 1 for reaction, and the remaining impurities are discharged, thereby realizing the pretreatment of the wastewater.

[0024] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A denitrification device for wastewater, comprising a reaction tank (1), characterized in that: A circular filter screen (2) is provided on the top of the reaction pool (1); an annular groove (3) is provided on the top of the reaction pool (1) and outside the circular filter screen (2); a frame (4) is provided on the side wall of the reaction pool (1); a water inlet hopper (5) is provided on the top of the frame (4); a stirring structure (6) is provided on the frame (4) and passes through the water inlet hopper (5) and the circular filter screen (2) in sequence; a scraping structure (7) is provided at the rotating end of the stirring structure (6); and a filter press structure (8) connected to the annular groove (3) is provided on the side wall of the reaction pool (1).

2. A denitrification device for wastewater according to claim 1, characterized in that: The filter press structure (8) comprises a cavity (8-1) arranged on the side wall of the reaction pool (1) and connected to the annular groove (3); a first electric cylinder (8-2) is arranged on the side away from the opening end of the cavity (8-1); the output end of the first electric cylinder (8-2) extends into the cavity (8-1) and is provided with an extrusion plate (8-3); a second electric cylinder (8-4) is arranged on the side close to the opening end of the cavity (8-1); the output end of the second electric cylinder (8-4) extends into the cavity (8-1) and is provided with a baffle (8-5); a filter screen (8-6) is arranged on the side wall of the reaction pool (1) and located on the inner side of the cavity (8-1); and a first scraper (8-7) is arranged on the side wall of the extrusion plate (8-3) close to the filter screen (8-6).

3. A denitrification device for wastewater according to claim 1, characterized in that: The stirring structure (6) comprises a driving motor (6-1) arranged on the top of the frame (4); a driving end of the driving motor (6-1) is provided with a rotating rod (6-2) which passes through the water inlet bucket (5) and the circular filter screen (2) in sequence and extends into the reaction tank (1); and a plurality of stirring rods (6-3) which are evenly distributed are provided on the side wall of the rotating rod (6-2) and located on the inner side of the reaction tank (1).

4. A denitrification device for wastewater according to claim 3, characterized in that: The axis center line of the rotating rod (6-2) coincides with the axis center line of the circular filter screen (2), and the side wall of the rotating rod (6-2) is rotatably connected to the circular filter screen (2).

5. A denitrification device for wastewater according to claim 3, characterized in that: The scraping structure (7) comprises an L-shaped connecting rod (7-1) arranged on the side wall of the rotating rod (6-2), the long rod end of the L-shaped connecting rod (7-1) being close to the side wall of the circular filter screen (2) and being provided with a second scraper (7-2), and the short rod end of the L-shaped connecting rod (7-1) extending into the annular groove (3) and being provided with a third scraper (7-3).

Images