Short-range deep biological denitrification device for municipal landfill leachate

Abstract

The utility model discloses a short-range deep biological denitrification device for municipal landfill leachate, which belongs to the technical field of sewage treatment and comprises a denitrification box, an aeration device positioned at the outer end part of the denitrification box and an aeration pipe mounted at the inner bottom of the denitrification box and communicated with the output end of the aeration device, the rotating shaft is parallel to the width direction of the denitrification box, an L-shaped scraping plate is fixed to the bottom end of the rotating shaft, the bottom of the L-shaped scraping plate is attached to the inner bottom of the denitrification box, and a rotating moving mechanism is arranged at one end of the rotating shaft. The linear guide groove is formed in the inner wall of the denitrification box in the length direction, the rack is arranged in the linear guide groove, and a rotary moving mechanism composed of the rotary motor, the reciprocating lead screw, the sliding block and the gear at the end of the shaft rod is matched, so that rotation and reciprocating motion of the shaft rod can be controlled at the same time in the cleaning process; and it is guaranteed that sludge at the bottom of the denitrification box is evenly cleaned, the cleaning effect of the device is improved, and practicability is higher.

Description

Technical Field

[0001] The utility model relates to a biological denitrification device, in particular to a short-range deep biological denitrification device for urban garbage leachate, belonging to the technical field of sewage treatment. Background Art

[0002] In the prior art, for example, the utility model with application number 202023268869.4 discloses a sewage deep biological denitrification device. In order to solve the problem that the sludge in the water easily causes scaling or even blockage on the inner wall of the pipe, and the sludge deposited at the bottom of the device is inconvenient to clean, a drive motor, a rotating shaft, a stirring blade, and a rubber brush are provided. When the device is discharging sewage, the drive motor is connected to the power supply to make it work. The operation of the drive motor will drive the rotating shaft to rotate, thereby driving the stirring blade on the surface of the fixed sleeve to rotate, which can crush the sludge in the water and mix it with water to prevent blockage of the sewage pipe. At the same time, the rotating shaft drives the fixed rod and the rubber brush on its outer surface to rotate, which can clean the sludge deposited at the bottom of the device to prevent it from accumulating for a long time and being difficult to clean.

[0003] Similar to the above application, there are still some shortcomings:

[0004] Although the sludge can be cleaned and crushed, the position of the rotating shaft is fixed, and only fixed-point cleaning and crushing operations can be performed, which affects the cleaning effect of the bottom of the denitrification box and has low practicality;

[0005] Therefore, a short-range deep biological denitrification device for urban garbage leachate is designed to optimize the above problems. Utility Model Content

[0006] The main purpose of the utility model is to provide a short-range deep biological denitrification device for urban garbage leachate. A linear guide groove is opened on the inner wall of the denitrification box along the length direction, and a rack is arranged inside the linear guide groove. A rotating and moving mechanism composed of a rotating motor, a reciprocating screw rod, a slider and a gear at the end of the shaft rod can be used to control the rotation and reciprocating movement of the shaft rod during the cleaning process, thereby ensuring that the sludge at the bottom of the denitrification box is cleaned evenly, improving the cleaning effect of the device and making it more practical. A crushing mechanism composed of a rectangular slide rod, a sleeve, a return spring, a stirring blade and a ball bearing is arranged at the end of the shaft rod and is combined with the corrugated guide groove on the inner side of the denitrification box. During the movement and rotation of the rotating shaft, the rotation and movement of the stirring blade can be controlled at the same time. In addition, the stirring blade can be controlled to reciprocate along the length direction of the rectangular slide rod to change the crushing position, thereby improving the crushing effect during use.

[0007] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0008] A short-range deep biological denitrification device for urban garbage leachate comprises a denitrification box, an aeration device located at the outer end of the denitrification box, and an aeration pipe installed at the inner bottom of the denitrification box and connected to the output end of the aeration device. A rotating shaft is rotatably installed inside the denitrification box, the rotating shaft is parallel to the width direction of the denitrification box, an L-shaped scraper is fixed to the bottom end of the rotating shaft, the bottom of the L-shaped scraper is in contact with the inner bottom of the denitrification box, a rotating movement mechanism is provided at one end of the rotating shaft, and a crushing mechanism for breaking up sludge is installed at the other end of the rotating shaft.

[0009] Preferably, the aeration pipe is arranged along the length direction of the denitrification box, and the aeration pipe is embedded in the denitrification box, the top surface of the aeration pipe is flush with the inner bottom surface of the denitrification box, and two groups of aeration pipes are symmetrically arranged on both sides of the bottom of the aeration pipe.

[0010] Preferably: a rubber strip is fixed to the bottom of the L-shaped scraper along the length direction, and the bottom of the rubber strip is in contact with the inner bottom of the denitrification box.

[0011] Preferably: the rotating moving mechanism includes a linear guide groove, a reciprocating screw, a slider, a gear, a rack and a rotating motor. The linear guide groove is opened on the inner wall of the denitrification box along the length direction of the denitrification box, and a reciprocating screw is rotatably installed between the two ends of the linear guide groove. A slider is installed on the reciprocating screw. A rotating motor is installed at the end of the denitrification box, and the output end of the rotating motor is connected to the end of the reciprocating screw. The end of the rotating shaft is rotatably installed on the top of the slider, and a gear is installed at the end of the rotating shaft. A rack is provided at the inner bottom of the linear guide groove along the length direction, and the gear is meshed with the rack.

[0012] Preferably, the crushing mechanism comprises a rectangular slide rod, a sleeve and a stirring blade, wherein the rectangular slide rod is fixed at the end of the rotating shaft, a sleeve is slidably provided on the rectangular slide rod along the length direction, and stirring blades are fixed at both ends of the outer side of the sleeve.

[0013] Preferably: a return spring is installed between the end of the rectangular slide rod and the inner end of the sleeve, a corrugated guide groove is opened along the length direction of the inner side edge of the denitrification box, and the end of the sleeve extends to the inside of the corrugated guide groove and fits with the inner side of the corrugated guide groove.

[0014] Preferably, a ball is rotatably mounted on one end of the sleeve close to the inner side of the corrugated guide groove, and the ball is in contact with the inner side of the corrugated guide groove.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides a short-range deep biological denitrification device for urban garbage leachate. A linear guide groove is provided on the inner wall of the denitrification box along the length direction, and a rack is provided inside the linear guide groove. A rotating movement mechanism composed of a rotating motor, a reciprocating screw rod, a slider and a gear at the end of the shaft rod is combined. During the cleaning process, the rotation and reciprocating movement of the shaft rod can be controlled at the same time to ensure that the sludge at the bottom of the denitrification box is cleaned evenly, thereby improving the cleaning effect of the device and making it more practical.

[0017] By arranging a rectangular slide rod, a sleeve, a return spring, a stirring blade, a ball bearing at the end of the shaft and cooperating with the corrugated guide groove on the inner side of the denitrification box to form a crushing mechanism, the rotation and movement of the stirring blade can be controlled simultaneously during the movement and rotation of the rotating shaft. In addition, the stirring blade can also be controlled to reciprocate along the length direction of the rectangular slide rod, thereby changing the crushing position and improving the crushing effect during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a side sectional view of the utility model;

[0019] Figure 2 For the utility model Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a diagram of the pulverizing mechanism of the utility model;

[0021] Figure 4 It is a top sectional view of the utility model.

[0022] In the figure: 1. denitrification box; 2. aeration device; 3. aeration pipe; 4. rotating shaft; 5. L-shaped scraper; 6. rotating movement mechanism; 7. crushing mechanism; 8. linear guide groove; 9. reciprocating screw rod; 10. slider; 11. gear; 12. rack; 13. rotating motor; 14. rectangular slide rod; 15. sleeve; 16. reset spring; 17. stirring blade; 18. corrugated guide groove; 19. ball bearing. DETAILED DESCRIPTION

[0023] In order to make the technical solution of the utility model more clear and specific to those skilled in the art, the utility model is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the utility model are not limited thereto.

[0024] like Figure 1-Figure 4As shown, this embodiment provides a short-range deep biological denitrification device for urban garbage leachate, including a denitrification box 1, an aeration device 2 located at the outer end of the denitrification box 1, and an aeration pipe 3 installed at the inner bottom of the denitrification box 1 and connected to the output end of the aeration device 2. A rotating shaft 4 is rotatably installed inside the denitrification box 1, and the rotating shaft 4 is parallel to the width direction of the denitrification box 1. An L-shaped scraper 5 is fixed to the bottom end of the rotating shaft 4, and the bottom of the L-shaped scraper 5 is in contact with the inner bottom of the denitrification box 1. A rotating movement mechanism 6 is provided at one end of the rotating shaft 4, and a crushing mechanism 7 for breaking up sludge is installed at the other end of the rotating shaft 4.

[0025] General working principle: When the sludge inside the denitrification box 1 is treated, the rotating movement mechanism 6 is used to control the rotation of the rotating shaft 4 to drive the L-shaped scraper 5 to move the sludge at the bottom of the denitrification box 1. At the same time, the L-shaped scraper 5 moves back and forth along the length direction of the denitrification box 1 to ensure that the bottom of the denitrification box 1 is evenly loosened. At the same time, after the sludge is loosened, the crushing mechanism 7 breaks up the sludge so that it can be discharged smoothly from the discharge port.

[0026] In this embodiment, the aeration pipe 3 is arranged along the length direction of the denitrification box 1, and the aeration pipe 3 is embedded in the interior of the denitrification box 1, the top surface of the aeration pipe 3 is flush with the inner bottom surface of the denitrification box 1, and two groups of aeration pipes 3 are symmetrically arranged on both sides of the bottom of the aeration pipe 3.

[0027] Local working principle: When supplying the interior of the denitrification box 1, the gas discharged from the aeration device 2 is discharged from the aeration pipe 3, and the interior of the denitrification box 1 is evenly supplied with gas. At the same time, the design of embedding the aeration pipe 3 into the interior of the denitrification box 1 can avoid interference with sludge cleaning, and is more practical.

[0028] In this embodiment, a rubber strip is fixed to the bottom of the L-shaped scraper 5 along the length direction, and the bottom of the rubber strip is in contact with the inner bottom of the denitrification box 1 .

[0029] Partial working principle: The rubber strip at the bottom of the L-shaped scraper 5 ensures the fit with the bottom of the denitrification box 1 during the cleaning process, and the cleaning effect is better.

[0030] In this embodiment, the rotating movement mechanism 6 includes a linear guide groove 8, a reciprocating screw 9, a slider 10, a gear 11, a rack 12 and a rotating motor 13. The linear guide groove 8 is opened on the inner wall of the denitrification box 1 along the length direction of the denitrification box 1. The reciprocating screw 9 is rotatably installed between the two ends of the linear guide groove 8. The slider 10 is installed on the reciprocating screw 9. The rotating motor 13 is installed at the end of the denitrification box 1, and the output end of the rotating motor 13 is connected to the end of the reciprocating screw 9. The end of the rotating shaft 4 is rotatably installed on the top of the slider 10. The end of the rotating shaft 4 is installed with a gear 11. The inner bottom of the linear guide groove 8 is provided with a rack 12 along the length direction, and the gear 11 is meshed with the rack 12.

[0031] Local working principle: During the sludge cleaning process, the rotating motor 13 controls the rotation of the reciprocating screw 9, and the slider 10 on the reciprocating screw 9 moves along the length direction of the reciprocating screw 9, thereby controlling the rotating shaft 4 to move along the length direction inside the denitrification box 1. While the rotating shaft 4 moves, the gear 11 at the end of the rotating shaft 4 engages with the rack 12, so that the rotating shaft 4 also rotates continuously.

[0032] In this embodiment, the crushing mechanism 7 includes a rectangular slide rod 14, a sleeve 15 and a stirring blade 17. The rectangular slide rod 14 is fixed to the end of the rotating shaft 4. The sleeve 15 is slidably provided on the rectangular slide rod 14 along the length direction. The stirring blades 17 are fixed to both ends of the outer side of the sleeve 15.

[0033] Partial working principle: The rotating shaft 4 rotates while driving the sleeve 15 and the stirring blade 17 to rotate, and the stirring blade 17 breaks up the sludge.

[0034] In this embodiment, a return spring 16 is installed between the end of the rectangular slide rod 14 and the inner end of the sleeve 15. A corrugated guide groove 18 is opened along the length direction of the inner edge of the denitrification box 1. The end of the sleeve 15 extends to the inside of the corrugated guide groove 18 and fits with the inner side of the corrugated guide groove 18.

[0035] Local working principle: During the rotation of the sleeve 15, the return spring 16 applies thrust to the sleeve 15 to ensure that the sleeve 15 fits the inner side of the corrugated guide groove 18. Therefore, the sleeve 15 will reciprocate along the length direction of the rectangular slide rod 14, change the position of the stirring blade 17, and improve the breaking effect.

[0036] In this embodiment, a ball 19 is rotatably mounted on one end of the sleeve 15 close to the inner side of the corrugated guide groove 18 , and the ball 19 contacts the inner side of the corrugated guide groove 18 .

[0037] Partial working principle: The use of the ball 19 at the end of the sleeve 15 can reduce the wear on the end of the sleeve 15 and the inner side of the corrugated guide groove 18.

[0038] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A short-range deep biological denitrification device for urban garbage leachate, comprising a denitrification box (1), an aeration device (2) located at the outer end of the denitrification box (1), and an aeration pipe (3) installed at the inner bottom of the denitrification box (1) and connected to the output end of the aeration device (2), characterized in that: A rotating shaft (4) is rotatably mounted inside the denitrification box (1). The rotating shaft (4) is parallel to the width direction of the denitrification box (1). An L-shaped scraper (5) is fixed to the bottom end of the rotating shaft (4). The bottom of the L-shaped scraper (5) is in contact with the inner bottom of the denitrification box (1). A rotating movement mechanism (6) is provided at one end of the rotating shaft (4). A crushing mechanism (7) for breaking up sludge is installed at the other end of the rotating shaft (4).

2. A short-range deep biological denitrification device for urban garbage leachate according to claim 1, characterized in that: The aeration pipe (3) is arranged along the length direction of the denitrification box (1), and the aeration pipe (3) is embedded in the interior of the denitrification box (1). The top surface of the aeration pipe (3) is flush with the inner bottom surface of the denitrification box (1). Two groups of aeration pipes (3) are symmetrically arranged on both sides of the bottom of the aeration pipe (3).

3. A short-range deep biological denitrification device for urban garbage leachate according to claim 1 or 2, characterized in that: A rubber strip is fixed to the bottom of the L-shaped scraper (5) along the length direction, and the bottom of the rubber strip is in contact with the inner bottom of the denitrification box (1).

4. A short-range deep biological denitrification device for urban garbage leachate according to claim 3, characterized in that: The rotary movement mechanism (6) comprises a linear guide groove (8), a reciprocating screw rod (9), a slider (10), a gear (11), a rack (12) and a rotary motor (13). The linear guide groove (8) is provided on the inner wall of the denitrification box (1) along the length direction of the denitrification box (1). A reciprocating screw rod (9) is rotatably mounted between the two ends of the linear guide groove (8). The slider (10) is mounted on the reciprocating screw rod (9). The rotary motor (13) is mounted at the end of the denitrification box (1), and the output end of the rotary motor (13) is connected to the end of the reciprocating screw rod (9). The end of the rotating shaft (4) is rotatably mounted on the top of the slider (10). The end of the rotating shaft (4) is mounted with a gear (11). The inner bottom of the linear guide groove (8) is provided with a rack (12) along the length direction. The gear (11) meshes with the rack (12).

5. A short-range deep biological denitrification device for urban garbage leachate according to claim 4, characterized in that: The crushing mechanism (7) comprises a rectangular sliding rod (14), a sleeve (15) and a stirring blade (17). The rectangular sliding rod (14) is fixed to the end of the rotating shaft (4). The sleeve (15) is slidably provided on the rectangular sliding rod (14) along the length direction. The stirring blades (17) are fixed to both ends of the outer side of the sleeve (15).

6. A short-range deep biological denitrification device for urban garbage leachate according to claim 5, characterized in that: A return spring (16) is installed between the end of the rectangular slide rod (14) and the inner end of the sleeve (15); a corrugated guide groove (18) is provided along the length direction of the inner side edge of the denitrification box (1); the end of the sleeve (15) extends into the interior of the corrugated guide groove (18) and fits with the inner side of the corrugated guide groove (18).

7. A short-range deep biological denitrification device for urban garbage leachate according to claim 6, characterized in that: A ball (19) is rotatably mounted on one end of the sleeve (15) close to the inner side of the corrugated guide groove (18), and the ball (19) contacts the inner side of the corrugated guide groove (18).

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