Dissolved air flotation device for water treatment

Abstract

The utility model relates to the technical field of sewage treatment, and discloses a dissolved air flotation device for water treatment. Comprising a dissolved air flotation treatment pond, a side plate is fixedly connected to one side of the upper portion of the dissolved air flotation treatment pond, a conveying belt is arranged on one side of the side plate, and the sludge scraping assembly is arranged above the conveying belt and used for removing sludge floating on the surface of sewage. A sludge scraping plate in the sludge scraping assembly can be dismounted and mounted from a mounting plate, and the sludge scraping height in sewage can be adjusted, so that the sludge scraping plate can be conveniently maintained or replaced, the sludge cleaning practicability of the sludge scraping plate is improved, the cleaning assembly can clean the upper side and the lower side of the sludge scraping plate at the same time, and the cleaning efficiency is improved. Therefore, sludge residues on the sludge scraping plate can be effectively reduced, the sludge on the sludge scraping plate is prevented from being mixed in sewage again when rotating into the sewage, and the sewage treatment effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field, concretely is a water treatment is with dissolving gas floatation device. BACKGROUND

[0002] Sewage treatment is the process that makes sewage reach the water quality requirement of being discharged into a water body or reused, and sewage treatment is widely applied in construction, agriculture, traffic, energy, petrochemical, environmental protection, city landscape, medical treatment, catering and each field, and more and more goes into the daily life of ordinary people.

[0003] Dissolved air floatation is a floatation process that uses the different solubility characteristics of water under different pressures to make micro-bubbles in water under pressure or negative pressure conditions, replaces the air floatation process of traditional air introduction equipment to water, and is mainly used for sewage treatment system and has a remarkable effect on algae removal, and is a new breakthrough in sewage treatment system, such as the combination type dissolved air floatation device disclosed by CN217676895U, which can better remove the suspended particles on the surface of the scraping plate during the operation of the scraping machine by setting the positioning adjusting mechanism, the clamping plate, the lifting plate and the scraper, and can solve the problem that the suspended particles cannot be removed during the operation of the scraping plate of the existing combination type dissolved air floatation device, and can cause the surface of the scraping plate to be attached with a large amount of suspended particles during the operation of the scraping plate, so that the suspended particles can enter the water body to be treated again during the operation of the scraping plate, and the defoaming effect and treatment effect of the combination type dissolved air floatation device are reduced, and the scraping plate has the advantages of good defoaming effect.

[0004] However, when the mud scraping plate cleans the mud floating on the sewage, the two sides of the mud scraping plate are attached with a large amount of mud, and the scraping plate can only clean one side of the mud scraping plate, and cannot clean the back surface of the mud scraping plate, so that when the mud scraping plate rotates into the sewage, the mud on the back surface of the mud scraping plate can be mixed in the sewage again, reducing the sewage treatment effect, and the mud scraping plate is arranged on the transmission belt, so that when the mud scraping plate is damaged after long-term use, the mud scraping plate is not convenient to disassemble and replace. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a dissolved air floatation device for water treatment to solve the problems that the scraping plate cannot clean the mud on the back surface of the mud scraping plate and the mud scraping plate is not convenient to install and disassemble.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a dissolved air floatation device for water treatment, which comprises a dissolved air floatation treatment tank, a side plate is fixedly connected to one side above the dissolved air floatation treatment tank, a conveying belt is arranged on one side of the side plate, and the dissolved air floatation device further comprises:

[0007] The mud scraping assembly is arranged above the conveying belt and used for removing the sludge floating on the surface of the sewage, and comprises a plurality of positioning plates arranged on the surface of the conveying belt, a plurality of torsion springs connected to one side above the positioning plates, and a mounting plate fixedly connected to one end of the torsion springs.

[0008] The cleaning assembly is arranged above the dissolved air flotation treatment tank and used for removing the sludge on the scraping plate, and comprises a housing arranged above the dissolved air flotation treatment tank, a gas cylinder fixedly connected to one side of the housing, an L-shaped plate fixedly connected to the output end of the gas cylinder, a sliding plate fixedly connected to the top of the L-shaped plate, a servo motor fixedly connected to the top of the sliding plate, a bidirectional reverse thread rod connected to the output end of the servo motor, upper and lower horizontal rods threadedly connected to the inside of the bidirectional reverse thread rod, a plurality of support rods fixedly connected to one side of the upper and lower horizontal rods, a connecting rod fixedly connected to the other end of the support rods, a plurality of spring jacks fixedly connected to the bottom of the connecting rod, and cleaning scraping plates fixedly connected to the bottom of the spring jacks.

[0009] Preferably, the torsion springs are arranged at the edge connection between the positioning plates and the mounting plate, and the edge connection between the positioning plates and the mounting plate is provided with a hinged shaft, and the upper surface of the positioning plate is in abutment with the lower surface of the mounting plate.

[0010] Preferably, the positioning rods are connected to the inside of the mounting plate, and two positioning rods are arranged on the mounting plate, and a plurality of positioning holes matched with the positioning rods are formed in the inside of the mounting plate.

[0011] Preferably, one end of the positioning rod is provided with a connecting thread, and the other end of the positioning rod is connected with a locking nut.

[0012] Preferably, an infrared sensor is arranged on the side adjacent to one side of the housing above the dissolved air flotation treatment tank, a controller is arranged on one side of the outside of the housing, the output end of the infrared sensor is electrically connected with the input end of the controller through wires, and the output end of the controller is electrically connected with the input end of the gas cylinder and the servo motor through wires.

[0013] Preferably, the L-shaped plate and the sliding plate are arranged on the inside and outside of the housing above the housing respectively, and the upper surface of the L-shaped plate and the lower surface of the sliding plate are both provided with a roller one.

[0014] Preferably, a connecting block with the same thickness as the housing is arranged between the L-shaped plate and the sliding plate, and a sliding groove is formed in the top of the housing to accommodate the connecting block.

[0015] Preferably, a plurality of guide rods are fixedly connected to the inside of the upper horizontal rod, the guide rods penetrate into the inside of the lower horizontal rod, and the lower horizontal rod is slidingly connected to the outside of the guide rods.

[0016] Preferably, the upper cross bar is provided with two rollers on both sides of the lower cross bar, and the two rollers are in contact with the inner wall of the shell.

[0017] Preferably, the cross section of the cleaning scraper is a right trapezoid, and the cleaning scrapers connected to the upper cross bar and the lower cross bar are arranged symmetrically.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] The mud scraping assembly can not only scrape the floating sludge in the dissolved air flotation treatment tank from the sewage, but also can be disassembled, installed and adjusted in the sewage to scrape the sludge, so that the maintenance or replacement of the mud scraping plate is facilitated, the mud scraping plate can be adjusted at a suitable cleaning position for use, the practicability of the mud scraping plate in cleaning the sludge is improved, the cleaning assembly can clean the upper and lower sides of the mud scraping plate at the same time, so that the residual sludge on the mud scraping plate can be effectively reduced, the sludge on the mud scraping plate is prevented from being mixed in the sewage again when the sludge rotates into the sewage, and the sewage treatment effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A structure schematic view of a preferred embodiment of the dissolved air flotation device for water treatment provided by the utility model;

[0021] Figure 2 A structure schematic view of the cleaning assembly provided by the utility model;

[0022] Figure 3 A rear view of the mud scraping assembly provided by the utility model;

[0023] Figure 4 A structure schematic view of the connection between the mud scraping plate and the mounting plate provided by the utility model.

[0024] In the drawing: 1, dissolved air flotation treatment tank; 2, side plate; 3, conveying belt; 4, mud scraping assembly; 41, positioning plate; 42, torsional spring; 43, mounting plate; 44, mud scraping plate; 45, positioning rod; 5, cleaning assembly; 51, shell; 52, air cylinder; 53, L-shaped plate; 54, sliding plate; 55, servo motor; 56, bidirectional reverse toothed rod; 57, upper cross bar; 58, lower cross bar; 59, supporting rod; 510, connecting rod; 511, spring top rod; 512, cleaning scraper; 6, infrared sensor; 7, controller; 8, roller one; 9, guide rod; 10, roller two. DETAILED DESCRIPTION

[0025] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0026] Please refer to Figures 1-4As shown, a kind of dissolved air flotation device for water treatment, including dissolved air flotation treatment pool 1, the side plate 2 of one side above dissolved air flotation treatment pool 1 is fixedly connected, by setting side plate 2, can be convenient for the installation fixed of conveying belt 3, side plate 2 one side is equipped with conveying belt 3, by setting conveying belt 3, it is convenient to fixed installation positioning plate 41, mounting plate 43 and mud scraping plate 44 and drive positioning plate 41, mounting plate 43, mud scraping plate 44 rotation, setting in the mud scraping assembly 4 for removing floating in the surface sludge of sewage above conveying belt 3, mud scraping assembly 4 includes the multiple positioning plate 41 being set in the surface of conveying belt 3, by setting positioning plate 41, can be convenient for the connection installation of mounting plate 43, the side of positioning plate 41 above is connected with a plurality of torsion springs 42, by setting torsion spring 42, can be convenient for drive mounting plate 43 from clean scraper 512 remove after automatic reset, torsion spring 42 one end is fixedly connected with mounting plate 43, by setting mounting plate 43, can be convenient for installation and fixed mud scraping plate 44, mounting plate 43 inside is slidably connected with mud scraping plate 44, by setting mud scraping plate 44, can be convenient for the sludge floating on dissolved air flotation treatment pool 1 from the sludge above conveying belt 3, mud scraping plate 44 inside is connected with positioning rod 45, by setting positioning rod 45, can be convenient for the position of mud scraping plate 44 is fixed and adjust the position of mud scraping plate 44 on mounting plate 43.The cleaning assembly 5 arranged above the dissolved air flotation treatment tank 1 for removing the sludge on the scraper, the cleaning assembly 5 comprises a shell 51 arranged above the dissolved air flotation treatment tank 1, through the arrangement of the shell 51, the air cylinder 52, the L-shaped plate 53 and the sliding plate 54 can be conveniently installed and supported, one side of the shell 51 is fixedly connected with the air cylinder 52, through the arrangement of the air cylinder 52, the L-shaped plate 53 can be conveniently moved inside the shell 51, the output end of the air cylinder 52 is fixedly connected with the L-shaped plate 53, through the arrangement of the L-shaped plate 53, the sliding plate 54 can be conveniently installed and supported, the upper side of the L-shaped plate 53 is fixedly connected with the sliding plate 54, through the arrangement of the sliding plate 54, the servo motor 55 can be conveniently installed and fixed, the upper side of the sliding plate 54 is fixedly connected with the servo motor 55, through the arrangement of the servo motor 55, the bidirectional reverse toothed rod 56 can be conveniently driven to rotate, the output end of the servo motor 55 is connected with the bidirectional reverse toothed rod 56, through the arrangement of the bidirectional reverse toothed rod 56, the upper cross rod 57 and the lower cross rod 58 can be conveniently driven to move relative to each other, the bidirectional reverse toothed rod 56 is screw-connected inside the upper cross rod 57 and the lower cross rod 58, through the arrangement of the upper cross rod 57 and the lower cross rod 58, the support rod 59 can be conveniently fixedly supported, a plurality of support rods 59 are fixedly connected on one side of the upper cross rod 57 and the lower cross rod 58, through the arrangement of the support rod 59, the connecting rod 510 can be conveniently supported and fixed, the other end of the support rod 59 is fixedly connected with the connecting rod 510, through the arrangement of the connecting rod 510, the spring top rod 511 can be conveniently fixed and installed, a plurality of spring top rods 511 are fixedly connected at the bottom of the connecting rod 510, through the arrangement of the spring top rod 511, when the cleaning scraper 512 and the mud scraping plate 44 are in contact, the cleaning scraper 512 can automatically slide along the surface of the mud scraping plate 44, so that the cleaning scraper 512 is tightly attached to the mud scraping plate 44 to clean the mud scraping plate 44, the bottom of the spring top rod 511 is fixedly connected with the cleaning scraper 512, through the arrangement of the cleaning scraper 512, the two sides of the mud scraping plate 44 can be conveniently cleaned.

[0027] Reference Figure 3 As shown in the figure, the torsional spring 42 is arranged at the edge connection of the positioning plate 41 and the mounting plate 43, and the edge connection of the positioning plate 41 and the mounting plate 43 is provided with a hinge shaft, the upper surface of the positioning plate 41 and the lower surface of the mounting plate 43 are in contact, when the mud scraping plate 44 and the cleaning scraper 512 are in contact and cause the angle of the mounting plate 43 to change, the torsional spring 42 can push the mounting plate 43 and the scraper back to the original position after the mud scraping plate 44 is separated from the cleaning scraper 512, so as to maintain the mud scraping angle and effect of the mud scraping plate 44.

[0028] Reference Figure 2 And Figure 4As shown, the positioning rod 45 is connected inside the mounting plate 43, two positioning rods 45 are arranged on the mounting plate 43, and a plurality of positioning holes matched with the positioning rods 45 are arranged inside the mounting plate 43. One end of the positioning rod 45 is provided with a connecting thread, and the outer end of the positioning rod 45 is connected with a locking nut. The positioning rod 45 can fix the cleaning scraper 512 in the mounting plate 43, and after adjusting the height of the cleaning scraper 512 in the mounting plate 43, the positioning rod 45 can fix the position of the adjusted cleaning scraper 512, which is convenient for dismounting and mounting the cleaning scraper 512 and adjusting the height of the cleaning scraper 512 in the mounting plate 43.

[0029] Reference Figure 1 And Figure 2 As shown, the infrared sensor 6 is arranged above the dissolved air flotation treatment tank 1 and adjacent to one side of the side plate 2. The infrared sensor 6 can detect the position of the mud scraping plate 44 moving into the shell 51. The controller 7 is arranged on one side of the shell 51. The controller 7 can receive the signal of the infrared sensor 6 and control the operation of the air cylinder 52 and the servo motor 55. The output end of the infrared sensor 6 is electrically connected with the input end of the controller 7 through wires, and the output end of the controller 7 is electrically connected with the input end of the air cylinder 52 and the servo motor 55 through wires. The infrared sensor 6 can detect the position of the mud scraping plate 44 after scraping mud, and the controller 7 can control the air cylinder 52 to drive the cleaning scraper 512 to move outside the mud scraping plate 44 and start the servo motor 55 to drive the cleaning scraper 512 to clean the mud scraping plate 44.

[0030] Reference Figure 2 As shown, the L-shaped plate 53 and the sliding plate 54 are arranged on the inside and outside of the shell 51 respectively. The upper surface of the L-shaped plate 53 and the lower surface of the sliding plate 54 are both provided with the roller one 8. The roller one 8 can reduce the sliding resistance of the L-shaped plate 53 and the sliding plate 54 on the shell 51. The L-shaped plate 53 and the sliding plate 54 are provided with a connecting block with the same thickness as the shell 51, and the shell 51 is provided with a sliding groove for accommodating the connecting block. The L-shaped plate 53 can drive the sliding plate 54 to move when the L-shaped plate 53 moves, so as to drive the servo motor 55 and the cleaning scraper 512 to move.

[0031] Reference Figure 2 As shown, a plurality of guide rods 9 are fixedly connected inside the upper cross rod 57. The guide rods 9 can facilitate the stable movement of the lower cross rod 58 to the upper cross rod 57. The guide rods 9 penetrate the inside of the lower cross rod 58, and the lower cross rod 58 is slidingly connected outside the guide rods 9.

[0032] Reference Figure 2 As shown, the upper cross rod 57 and the lower cross rod 58 are both provided with the roller two 10, which abuts against the inner wall of the shell 51. The roller two 10 can reduce the sliding resistance of the upper cross rod 57 and the lower cross rod 58 on the inner wall of the shell 51.

[0033] refer to Figure 2 As shown, the cross-section of the cleaning scraper 512 is a right-angled trapezoid, and the cleaning scraper 512 connected to the upper cross bar 57 and the cleaning scraper 512 connected to the lower cross bar 58 are symmetrically arranged. By setting the cleaning scraper 512, it is convenient to contact both sides of the scraper 44 to clean the sludge on both sides of the scraper 44 at the same time, thereby reducing the sludge residue on the scraper 44.

[0034] Working principle: First, set the operating parameters of the conveyor belt 3, the cylinder 52 and the servo motor 55. When the conveyor belt 3 is running, the conveyor belt 3 drives each cleaning scraper 512 to move above the sewage. When the cleaning scraper 512 moves to the side close to the shell 51, the cleaning scraper 512 scrapes off the sludge and then continues to rotate slowly. When the scraper 44 is detected by the infrared sensor 6, the controller 7 receives the information of the infrared sensor 6 and starts the cylinder 52. The operation of the cylinder 52 drives the L-shaped plate 53 to move forward, thereby pushing the cleaning scraper 512 to move forward, so that the cleaning scraper 512 can move to the upper sludge edge of the scraper 44 when the scraper 44 is in a horizontal state. Then the servo motor 55 runs, and the servo motor 55 drives the two-way anti-thread screw 56 to rotate. When the two-way anti-thread screw 56 rotates, it drives the upper cross bar 57 The cleaning scraper 512 is moved relative to the lower cross bar 58 at the same time, thereby driving the cleaning scraper 512 to move at the same time and to contact the scraper 44. When the conveyor belt 3 continues to drive the scraper 44 to rotate, the scraper 44 can drive the mounting plate 43 to rotate along the hinge axis, thereby preventing the cleaning scraper 512 from blocking the scraper 44 and continuing to keep the cleaning scraper 512 in a cleaning state on the scraper 44. When the cleaning scraper 512 is completely moved out of the scraper 44, the cylinder 52 drives the L-shaped plate 53 to move and reset, and the servo motor 55 drives the cleaning scraper 512 to move and reset, waiting for the next cleaning work. When the scraper 44 needs to be disassembled and replaced, use a tool to remove the locking nut on the positioning rod 45, and then pull the positioning rod 45 out of the mounting plate 43 and the scraper 44, so that the scraper 44 can be disassembled.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0036] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A dissolved air flotation device for water treatment, comprising a dissolved air flotation treatment tank (1), one side above the dissolved air flotation treatment tank (1) is fixedly connected with a side plate (2), one side of the side plate (2) is provided with a conveying belt (3), characterized in that, Also include: The mud scraping assembly (4) is arranged above the conveying belt (3) for removing the sludge floating on the surface of the sewage, the mud scraping assembly (4) comprises a plurality of positioning plates (41) arranged on the surface of the conveying belt (3), a plurality of torsion springs (42) are connected on one side above the positioning plate (41), one end of the torsion spring (42) is fixedly connected with a mounting plate (43), a mud scraping plate (44) is slidably connected in the mounting plate (43), a positioning rod (45) is connected in the mud scraping plate (44); The cleaning assembly (5) is arranged above the dissolved air flotation treatment tank (1) for removing the sludge on the scraper, the cleaning assembly (5) comprises a housing (51) arranged above the dissolved air flotation treatment tank (1), one side of the housing (51) is fixedly connected with a gas cylinder (52), the output end of the gas cylinder (52) is fixedly connected with an L-shaped plate (53), the L-shaped plate (53) is fixedly connected with a sliding plate (54) above, the sliding plate (54) is fixedly connected with a servo motor (55) above, the output end of the servo motor (55) is connected with a bidirectional reverse thread rod (56), the bidirectional reverse thread rod (56) is threadedly connected in the inside of the upper cross bar (57) and the lower cross bar (58), a plurality of support rods (59) are fixedly connected on one side of the upper cross bar (57) and the lower cross bar (58), the other end of the support rod (59) is fixedly connected with a connecting rod (510), a plurality of spring top rods (511) are fixedly connected at the bottom of the connecting rod (510), a cleaning scraper (512) is fixedly connected at the bottom of the spring top rod (511).

2. The dissolved air flotation device for water treatment according to claim 1, characterized in that: The torsion spring (42) is arranged at the edge connection of the positioning plate (41) and the mounting plate (43), and the edge connection of the positioning plate (41) and the mounting plate (43) is provided with a hinge shaft, and the upper surface of the positioning plate (41) and the lower surface of the mounting plate (43) are in contact.

3. The dissolved air flotation device for water treatment according to claim 1, characterized in that: The positioning rod (45) is connected in the mounting plate (43), the positioning rod (45) is provided with two on the mounting plate (43), and a plurality of positioning holes matched with the positioning rod (45) are formed in the mounting plate (43).

4. The dissolved air flotation device for water treatment according to claim 1, characterized in that: One end of the positioning rod (45) is provided with a connecting thread, and the other end of the positioning rod (45) is connected with a locking nut.

5. The dissolved air flotation device for water treatment according to claim 1, characterized in that: An infrared sensor (6) is arranged on one side adjacent to the side plate (2) above the dissolved air flotation treatment tank (1), a controller (7) is arranged on one side of the housing (51), the output end of the infrared sensor (6) is electrically connected with the input end of the controller (7) through wires, and the output end of the controller (7) is electrically connected with the input end of the gas cylinder (52) and the servo motor (55) through wires.

6. The dissolved air flotation device for water treatment according to claim 1, characterized in that: The L-shaped plate (53) and the sliding plate (54) are arranged on the inside and outside of the housing (51) above, respectively, and the upper surface of the L-shaped plate (53) and the lower surface of the sliding plate (54) are both provided with a roller one (8).

7. The dissolved air flotation device for water treatment according to claim 1, characterized in that: A connecting block with the same thickness as the housing (51) is arranged between the L-shaped plate (53) and the sliding plate (54), and a sliding groove is formed in the housing (51) above to accommodate the connecting block.

8. The dissolved air flotation device for water treatment according to claim 1, characterized in that: The upper cross bar (57) is internally fixedly connected with a plurality of guide rods (9), the guide rods (9) penetrate the inside of the lower cross bar (58), and the lower cross bar (58) is slidingly connected outside the guide rods (9).

9. The dissolved air flotation device for water treatment according to claim 1, characterized in that: Rollers two (10) are arranged on the two sides of the upper cross bar (57) and the lower cross bar (58), and the rollers two (10) abut against the inner wall of the shell (51).

10. The dissolved air flotation device for water treatment according to claim 1, characterized in that: The cross section of the cleaning scraper (512) is a right trapezoid, the cleaning scraper (512) connected to the upper cross bar (57) is arranged in a symmetrical manner with the cleaning scraper (512) connected to the lower cross bar (58).

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