Foam scraping treatment device for air flotation of washing sewage

Abstract

The utility model discloses a foam scraping treatment device for washing sewage air floatation, which comprises a treatment tank, a cylindrical inner tank is arranged in the treatment tank, a foam storage cavity is formed between the inner tank and the treatment tank, aeration holes and a water outlet are arranged at the bottom of the inner tank, a water replenishing port is arranged on the wall of the inner tank, a communication tank is arranged on the longitudinal inner wall of the inner tank, and the foam storage cavity is communicated with the communication tank. A liquid level sensor is installed in the communicating groove, a foam scraping mechanism is arranged above a groove opening of the inner groove and provided with a plurality of rotatable blade scraping plates, and when the blade scraping plates rotate, the blade scraping plates cover the groove opening of the inner groove, so that when the blade scraping plates rotate, foam on the water surface of the inner groove is scraped and collected into the spiral drum-shaped blade scraping plates. And then, the foam flows along a flow guide groove in the paddle scraper and is thrown into a foam storage cavity under the action of centrifugal force. The height of the foam scraping plate can be adjusted according to the height of the liquid level, and foam generated by washing sewage is scraped and collected in a rotary centrifugal mode.

Description

Technical Field

[0001] The utility model relates to the field of sewage treatment equipment, in particular to a foam scraping treatment device for washing sewage flotation. Background Art

[0002] Flotation treatment of washing wastewater is an effective way to treat wastewater. It uses gas to form microbubbles in water, and the surfactant properties can attach to the surface of the bubbles, and eventually float on the surface of the liquid to remove pollutants. However, the scraper of the traditional foam collection device cannot be adjusted laterally, the transmission auxiliary structure is insufficient, and the scraping effect is poor. As a result, it can only scrape away the bubbles at a fixed liquid level, and cannot effectively separate the foam after flotation of washing wastewater. Secondly, some foam scraping equipment is a flotation equipment commonly used in the mineral processing and metallurgical industries. There are dead corners for scraping, and it cannot be effectively used for foam separation of washing wastewater. In addition, it faces the problems of unclean foam separation and large and bulky equipment. Utility Model Content

[0003] In view of the above technical problems, the utility model provides a foam scraping treatment device for washing sewage flotation, which can adjust the height of the foam scraper according to the liquid level and scrape and collect the foam generated by the washing sewage by rotating centrifugal method.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a foam scraping treatment device for washing sewage flotation, including a treatment tank, a cylindrical inner tank is arranged in the treatment tank, a foam storage chamber is formed between the inner tank and the treatment tank, and aeration holes and a water outlet are arranged at the bottom of the inner tank, a water replenishment port is arranged on the tank wall of the inner tank, a connecting tank is arranged on the longitudinal inner wall of the inner tank, a liquid level sensor is installed in the connecting tank, a foam scraping mechanism is arranged above the slot opening of the inner tank, and the foam scraping mechanism has a plurality of rotatable paddle scrapers, which cover the slot opening of the inner tank when the paddle scraper rotates, so as to scrape the foam on the water surface of the inner tank when the paddle scraper rotates, and collect it into the spiral drum-shaped paddle scraper, and then the foam will flow along the guide groove inside the paddle scraper, and the foam will be thrown into the foam storage chamber under the action of centrifugal force.

[0005] Preferably, the processing tank is cylindrical, the processing tank is concentrically arranged with the inner tank, and the notch of the processing tank is higher than the notch of the inner tank.

[0006] Preferably, the notch of the communicating groove faces downward, the bottom of the communicating groove faces upward, and the liquid level sensor is installed on the bottom of the communicating groove.

[0007] Preferably, the foam scraping mechanism also includes a bracket and a motor connected to the bracket, the rotating end of the motor faces downward, a rotating shaft is vertically connected to the rotating end, the height of the rotating shaft can be adjusted, and the paddle scraper is connected to the end of the rotating shaft.

[0008] Preferably, the cross-section of the paddle scraper is in the shape of a spiral roll, so that a spiral guide groove is formed inside the paddle scraper, and a guide groove is formed in the center of the paddle scraper.

[0009] Preferably, the number of the paddle scrapers is ≥3, the number of turns of the spiral drum is 2 to 5, and the spiral angle is 25 to 45°.

[0010] Preferably, a slide groove is provided on the groove opening of the inner groove, a conduit is connected to the outer end of the guide groove, a water outlet of the conduit is located in the foam storage chamber, a lock is connected to the conduit, a slider is provided on the lock, and the slider is adapted to the slide groove.

[0011] Preferably, the conduit is a hose, and the outlet of the conduit is below the water surface.

[0012] Preferably, the groove spacing of the guide groove is 1 cm to 4 cm, the polar angle is 20° to 45°, and the pitch is 10 to 60 mm.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are as follows: the inner tank and the treatment tank are in a nested structure to form a foam storage chamber between the two, and the floating foam can be collected by rotating the paddle scraper; the paddle scraper is a spiral barrel structure with a spiral guide groove inside, which can throw the foam out of the inner barrel to the foam storage chamber under the action of centrifugal force when rotating, thereby realizing foam separation and improving the efficiency of foam removal; the liquid level height is determined by a liquid level sensor, and the distance between the paddle scraper and the water surface is adjusted in real time to improve the foam separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the processing tank structure of the utility model;

[0016] Figure 2 It is a front structural schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the tail end of the blade scraper of the utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the blade scraper of the utility model;

[0019] Figure 5This is a schematic diagram of the cross-sectional structure of the chute of the utility model;

[0020] Figure 6 This is a schematic diagram of the paddle scraper structure of the utility model.

[0021] In the figure: 1. treatment tank; 2. inner tank; 2-1. connecting tank; 2-2. liquid level sensor; 3. paddle scraper; 3-1. conduit; 3-2. spiral drum; 3-3. spiral guide groove; 3-4. guide groove; 4. motor; 4-1. rotating shaft; 5. bracket; 6. water filling port; 6-1. water outlet; 6-2. aeration hole; 7. slider; 7-1. slide groove; 7-2. lock. DETAILED DESCRIPTION

[0022] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that, without further description, elements, structures and features in one embodiment may also be beneficially combined in other embodiments.

[0023] A foam scraping treatment device for washing sewage flotation, see Figures 1 to 6 , comprising a processing tank 1, the processing tank 1 is cylindrical, a cylindrical inner tank 2 is arranged in the processing tank 1, the inner tank 2 and the bottom surface of the processing tank 1 are located on the same plane, and the processing tank 1 and the inner tank 2 are arranged concentrically, and the notch of the processing tank 1 is higher than the notch of the inner tank 2;

[0024] An aeration hole 6-2 and a water outlet 6-1 are provided at the bottom of the inner tank 2. The water outlet 6-1 is provided at the center of the bottom of the inner tank 2. The aeration holes 6-2 are evenly distributed around the water outlet 6-1. A water replenishment port 6 is provided on the wall of the inner tank 2. A pipe fitting is provided on the water replenishment port 6. The pipe opening of the pipe fitting extends to the outside of the treatment tank 1.

[0025] A connecting groove 2-1 is provided on the longitudinal inner wall of the inner groove 2, and a liquid level sensor 2-2 is installed in the connecting groove 2-1. The groove opening of the connecting groove 2-1 faces downward, and the groove bottom of the connecting groove 2-1 faces upward. The liquid level sensor 2-2 is installed on the groove bottom of the connecting groove 2-1.

[0026] A foam storage cavity is formed between the inner tank 2 and the processing tank 1, and a foam scraping mechanism is provided above the notch of the inner tank 2;

[0027] The foam scraping mechanism includes a bracket 5 and a motor 4 connected to the bracket 5. The rotating end of the motor 4 faces downward, and a rotating shaft 5 is vertically connected to the rotating end. The height of the rotating shaft 5 can be adjusted, and a plurality of rotatable paddle scrapers 3 are connected to the end of the rotating shaft 5. When the paddle scraper 3 rotates, it covers the notch of the inner groove 2, so as to scrape the foam on the water surface of the inner groove 2 when the paddle scraper 3 rotates, and collect it into the inside of the spiral reel 3-2-shaped paddle scraper 3. Then the foam will flow along the guide groove 3-4 inside the paddle scraper 3, and the foam will be thrown into the foam storage chamber under the action of centrifugal force.

[0028] In this embodiment, the cross-section of the blade scraper 3 is a spiral reel 3-2 to form a spiral guide groove 3-3 inside the blade scraper 3. The groove spacing of the guide groove is 2 cm, the polar angle is 35°, the pitch is 40 mm, and a guide groove 3-4 is formed in the center of the blade scraper.

[0029] In this embodiment, the number of the paddle scrapers 3 is 3, the number of turns of the spiral drum 3 - 2 is 3, and the spiral angle is 45°.

[0030] In this embodiment, a slide groove 7-1 is provided on the groove of the inner groove 2, and the outer end of the guide groove 3-4 is connected to a conduit 3-2, which is a hose. The outlet of the conduit 3-2 is lower than the water surface, and the water outlet of the conduit 3-2 is located in the foam storage chamber. A lock buckle 7-2 is connected to the conduit 3-2, and a slider 7 is provided on the lock buckle 7-2, which is adapted to the slide groove 7-1.

[0031] After equipment experimental testing, the device can remove more than 95% of foam.

[0032] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A foam scraping treatment device for washing wastewater flotation, characterized in that: The invention comprises a treatment tank, wherein a cylindrical inner tank is arranged in the treatment tank, a foam storage chamber is formed between the inner tank and the treatment tank, an aeration hole and a water outlet are arranged at the bottom of the inner tank, a water replenishment port is arranged on the tank wall of the inner tank, a connecting tank is arranged on the longitudinal inner wall of the inner tank, a liquid level sensor is installed in the connecting tank, a foam scraping mechanism is arranged above the slot opening of the inner tank, and the foam scraping mechanism has a plurality of rotatable paddle scrapers, which cover the slot opening of the inner tank when the paddle scrapers rotate, so as to scrape the foam on the water surface of the inner tank and collect it into the inside of the spiral drum-shaped paddle scraper, and then the foam will flow along the guide groove inside the paddle scraper, and the foam will be thrown into the foam storage chamber under the action of centrifugal force.

2. The foam scraping treatment device for washing wastewater flotation according to claim 1 is characterized in that: The processing tank is cylindrical, the processing tank is concentrically arranged with the inner tank, and the notch of the processing tank is higher than the notch of the inner tank.

3. The foam scraping treatment device for washing wastewater flotation according to claim 1 is characterized in that: The notch of the communicating groove faces downward, the bottom of the communicating groove faces upward, and the liquid level sensor is installed on the bottom of the communicating groove.

4. The foam scraping treatment device for washing wastewater flotation according to claim 1 is characterized in that: The foam scraping mechanism also includes a bracket and a motor connected to the bracket, the rotating end of the motor faces downward, a rotating shaft is vertically connected to the rotating end, the height of the rotating shaft can be adjusted, and a paddle scraper is connected to the end of the rotating shaft.

5. The foam scraping treatment device for washing wastewater flotation according to claim 1 is characterized in that: The cross section of the paddle scraper is in the shape of a spiral roll, so that a spiral guide groove is formed inside the paddle scraper, and a guide groove is formed in the center of the paddle scraper.

6. A foam scraping treatment device for washing wastewater flotation according to claim 5, characterized in that: The number of the paddle scrapers is ≥3, the number of turns of the spiral drum is 2 to 5, and the spiral angle is 25 to 45 degrees.

7. The foam scraping treatment device for washing wastewater flotation according to claim 1 is characterized in that: A slide groove is arranged on the groove opening of the inner groove, a conduit is connected to the outer end of the guide groove, a water outlet of the conduit is located in the foam storage cavity, a lock is connected to the conduit, a slider is arranged on the lock, and the slider is adapted to the slide groove.

8. The foam scraping treatment device for washing wastewater flotation according to claim 7 is characterized in that: The conduit is a hose, and an outlet of the conduit is lower than the water surface.

9. The foam scraping treatment device for washing wastewater flotation according to claim 5, characterized in that: The groove spacing of the guide groove is 1 cm to 4 cm, the polar angle is 20° to 45°, and the pitch is 10 to 60 mm.

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