Stacked screw dewaterer with sludge concentration adjusting function

Abstract

The utility model relates to the technical field of spiral dewaterer, especially a spiral dewaterer with sludge concentration adjusting function, which comprises: sequentially connected feed pipe, sludge concentration adjusting mechanism, sludge treatment part and concentration dewatering part, the sludge concentration adjusting mechanism comprises: first adjusting part and second adjusting part, the import end of first adjusting part and second adjusting part is all linked with the export end of feed pipe, and the export end of first adjusting part and second adjusting part is all linked with the import end of sludge treatment part; concentration sensor, the concentration sensor is located in the feed pipe, and the concentration sensor is used for real -time detection sludge's concentration in the feed pipe. The utility model discloses through concentration sensor can detect the concentration of the sludge to be dewatered, and according to the detection result selects filtration treatment or dilution treatment, to ensure that the concentration of the sludge into the sludge treatment part meets the requirements, to improve the dewatering efficiency and dewatering effect of sludge.

Description

Technical Field

[0001] This utility model relates to the field of screw press dewatering machine technology, and in particular to a screw press dewatering machine with sludge concentration adjustment function. Background Technology

[0002] The screw press dewatering machine utilizes a combination of a screw shaft and moving and stationary rings, employing physical compression and filtration principles to dewater sludge. It is a highly efficient and energy-saving sludge dewatering device widely used in municipal sewage treatment, industrial wastewater treatment, food processing, and aquaculture. During operation, the concentration of the sludge to be dewatered should not be too high or too low. Excessive concentration leads to poor chemical reaction, resulting in loose and brittle flocs that easily clog the equipment, affecting dewatering efficiency. Conversely, insufficient concentration results in small flocs, making it difficult to form effective flocs even with increased chemical dosage, leading to poor dewatering. Therefore, a screw press dewatering machine with sludge concentration adjustment capabilities is urgently needed. Currently, sludge dewatering involves directly feeding it into the screw press; however, the lack of sludge concentration adjustment negatively impacts dewatering efficiency and effectiveness. Utility Model Content

[0003] To address the shortcomings of the existing production technology, the applicant provides a screw press dewatering machine with sludge concentration adjustment function. By improving the structure of the screw press dewatering machine, the concentration of sludge can be adjusted before sludge dewatering, thereby improving the sludge dewatering efficiency and dewatering effect.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A screw press dewatering machine with sludge concentration adjustment function includes: a feed pipe, a sludge concentration adjustment mechanism, a sludge treatment section, and a thickening and dewatering section connected in sequence. The sludge treatment section is used for chemical treatment of sludge to form flocs, and the thickening and dewatering section is used for thickening and dewatering sludge. The sludge concentration adjustment mechanism includes: a first adjustment section and a second adjustment section, the inlet ends of the first adjustment section and the second adjustment section are both connected to the outlet end of the feed pipe, and the outlet ends of the first adjustment section and the second adjustment section are both connected to the inlet end of the sludge treatment section. The first adjustment section is used for sludge filtration, and the second adjustment section is used for sludge dilution. A concentration sensor is located inside the feed pipe and is used to detect the sludge concentration inside the feed pipe in real time.

[0006] Therefore, the concentration sensor can detect the concentration of the sludge to be dewatered, and select filtration or dilution treatment based on the detection results. Compared with the existing sludge direct chemical treatment and concentration dewatering treatment, this method has a simple structure and is easy to operate. It can filter or dilute the sludge according to its concentration before chemical treatment to ensure that the concentration of the sludge entering the sludge treatment unit meets the requirements, thereby improving the sludge dewatering efficiency and dewatering effect.

[0007] As a further improvement to the above technical solution: the first adjustment unit includes a filter box, a filter screen, and a first drain outlet. The filter screen is installed inside the filter box and is inclined. The first drain outlet is located at the bottom of the filter box. Therefore, the sludge entering the filter box through the feed pipe can have its moisture removed by the filter screen, thereby increasing the concentration of the sludge entering the sludge treatment unit.

[0008] As a further improvement to the above technical solution: the first adjustment part further includes a scraper and a first driving member. The scraper is located above the filter screen and is slidably connected to the filter box, extending to the outside of the filter box. The first driving member is installed outside the filter box, and its telescopic end is connected to the scraper. Thus, the scraper is moved by the first driving member to scrape away residual sludge from the filter screen.

[0009] As a further improvement to the above technical solution: the second adjustment part includes a dilution tank and a dilution tube, wherein the dilution tube is installed on the top of the dilution tank.

[0010] As a further improvement to the above technical solution: the second adjustment unit further includes a second driving component, a first rotating rod, and a first stirring rod. The second driving component is installed at the top of the dilution tank, the first rotating rod passes through the dilution tank, and one end of the first rotating rod is connected to the driving end of the second driving component. The first stirring rod is located inside the dilution tank and is connected to the first rotating rod. Thus, the second driving component is activated, and diluent is added to the dilution tank through the dilution pipe. The second driving component drives the first stirring rod to rotate, thereby diluting the sludge to be dewatered and reducing the concentration of the sludge entering the sludge treatment section.

[0011] As a further improvement to the above technical solution: the feed pipe and the first regulating section are connected by a first connecting pipe, and the first connecting pipe is equipped with a first valve. Therefore, when the concentration sensor detects that the sludge concentration is less than the first standard concentration value C1, the first valve is opened, allowing the sludge in the feed pipe to enter the first regulating section through the first connecting pipe for filtration.

[0012] As a further improvement to the above technical solution: the feed pipe and the second regulating section are connected by a second connecting pipe, and the second connecting pipe is equipped with a second valve. Therefore, when the concentration sensor detects that the sludge concentration is greater than the second standard concentration value C2, the second valve is opened, allowing the sludge in the feed pipe to enter the second regulating section through the second connecting pipe for dilution treatment.

[0013] As a further improvement to the above technical solution: the sludge treatment section and the thickening and dewatering section are connected by a third connecting pipe, and the third connecting pipe is equipped with a pump. Thus, the pump is started to pump the chemically treated sludge into the thickening and dewatering section for thickening and dewatering.

[0014] As a further improvement to the above technical solution: the thickening and dewatering section is inclined, and the side of the thickening and dewatering section closer to the sludge treatment section is lower than the side of the thickening and dewatering section farther from the sludge treatment section.

[0015] As a further improvement to the above technical solution: a water collection tank is provided at the bottom of the thickening and dewatering section, and a drain pipe is installed on the side of the water collection tank near the sludge treatment section. A sludge discharge hopper is provided on the side of the thickening and dewatering section away from the sludge treatment section. Thus, the dewatered sludge is discharged through the sludge discharge hopper, and the remaining wastewater flows towards the side near the sludge treatment section under the action of gravity and is finally discharged through the drain pipe.

[0016] The beneficial effects of this utility model are as follows:

[0017] The concentration sensor can detect the concentration of the sludge to be dewatered, and select filtration or dilution treatment based on the detection results. Compared with the existing sludge direct chemical treatment and concentration dewatering treatment, this method has a simple structure and is easy to operate. It can filter or dilute the sludge according to its concentration before chemical treatment to ensure that the concentration of the sludge entering the sludge treatment unit meets the requirements, thereby improving the sludge dewatering efficiency and dewatering effect.

[0018] This utility model also has the following advantages:

[0019] 1. In this utility model, the sludge entering the filter box through the feed pipe is filtered by the filter screen to remove the water, thereby increasing the concentration of the sludge entering the sludge treatment section; the scraper is driven by the first driving component to move and scrape off the sludge remaining on the filter screen.

[0020] 2. This utility model activates the second driving component and adds diluent to the dilution tank through the dilution pipe. The second driving component drives the first stirring rod to rotate, thereby diluting the sludge to be dewatered and reducing the concentration of the sludge entering the sludge treatment section.

[0021] 3. The sludge after dewatering is discharged through the sludge discharge hopper. The remaining wastewater flows towards the side closer to the sludge treatment section under the action of gravity and is finally discharged through the drain pipe. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the screw press dewatering machine with sludge concentration adjustment function according to the present invention;

[0023] Figure 2 For the present utility model Figure 1 Enlarged schematic diagram of a local structure at point A;

[0024] Figure 3 This is a cross-sectional view of the first adjusting part of this utility model;

[0025] Figure 4 This is a cross-sectional view of the second section of this utility model;

[0026] Figure 5 This is a cross-sectional view of the sludge treatment section of this utility model;

[0027] Figure 6 This is a cross-sectional view of the concentration and dehydration section of this utility model.

[0028] Among them: 1. Feed pipe;

[0029] 2. Sludge concentration adjustment mechanism;

[0030] 3. Sludge Treatment Department;

[0031] 301. Dosing tank; 302. Dosing pipe; 303. Third drive component; 304. Second rotating rod; 305. Second stirring rod;

[0032] 4. Concentration and dehydration section;

[0033] 401. Concentration and dehydration tank; 402. Fourth driving component; 403. Spiral shaft; 404. Spiral blades; 405. Fixed ring; 406. Moving ring;

[0034] 5. First adjustment section;

[0035] 501. Filter box; 502. Filter screen; 503. First drain outlet; 504. Scraper; 505. First driving component;

[0036] 6. Second adjustment section;

[0037] 601. Dilution tank; 602. Dilution tube; 603. Second drive component; 604. First rotating rod; 605. First stirring rod;

[0038] 7. Concentration sensor;

[0039] 8. First connecting tube;

[0040] 801. First valve;

[0041] 9. Second connecting pipe;

[0042] 901. Second valve;

[0043] 10. Third connecting pipe;

[0044] 11. Pump;

[0045] 12. Water collection tank;

[0046] 13. Drainage pipe;

[0047] 14. Get out of the mud bucket. Detailed Implementation

[0048] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0049] like Figures 1 to 6 The present invention is a preferred embodiment of the present invention. The screw press dewatering machine with sludge concentration adjustment function of this embodiment includes: a feed pipe 1, a sludge concentration adjustment mechanism 2, a sludge treatment section 3, and a concentration and dewatering section 4 connected in sequence. The sludge treatment section 3 is used for chemical treatment of sludge to form flocs, and the concentration and dewatering section 4 is used for concentration and dewatering of sludge. The sludge concentration adjustment mechanism 2 includes: a first adjustment section 5 and a second adjustment section 6. The inlet ends of both the first adjustment section 5 and the second adjustment section 6 are connected to the outlet end of the feed pipe 1, and the outlet ends of both the first adjustment section 5 and the second adjustment section 6 are connected to the inlet end of the sludge treatment section 3. The first adjustment section 5 is used for sludge filtration, and the second adjustment section 6 is used for sludge dilution. A concentration sensor 7 is located inside the feed pipe 1 and is used to detect the concentration of sludge inside the feed pipe 1 in real time. Therefore, the concentration sensor 7 can detect the concentration of the sludge to be dewatered, and select filtration or dilution treatment based on the detection results. Compared with the existing sludge direct chemical treatment and concentration dewatering treatment, this method has a simple structure and is easy to operate. It can filter or dilute the sludge according to its concentration before chemical treatment to ensure that the concentration of the sludge entering the sludge treatment unit 3 meets the requirements, thereby improving the sludge dewatering efficiency and dewatering effect.

[0050] In other words, if the sludge concentration is too high, the chemical reaction effect will be poor, and the formed flocs will be loose and brittle, easily causing blockage inside the equipment and affecting the dewatering efficiency. If the sludge concentration is too low, the formed flocs will be small, and even if the dosage is increased, it will be difficult to form effective flocs, resulting in poor dewatering effect. Therefore, before adding chemicals to the sludge, filtration or dilution treatment can be selected according to the concentration of the sludge to be dewatered to ensure that the sludge concentration meets the requirements of chemical treatment, so as to improve the dewatering efficiency and dewatering effect.

[0051] Specifically, such as Figure 5 As shown, the sludge treatment unit 3 includes: a dosing tank 301, a dosing pipe 302, a third drive component 303, a second rotating rod 304, and a second stirring rod 305. The dosing pipe 302 is installed on the top of the dosing tank 301, the third drive component 303 is installed on the top of the dosing tank 301, the second rotating rod 304 passes through the dosing tank 301, and one end of the second rotating rod 304 is connected to the drive end of the third drive component 303. The second stirring rod 305 is located inside the dosing tank 301 and is connected to the second rotating rod 304. When the third drive component 303 is activated, it drives the second stirring rod 305 to rotate, thereby realizing the dosing treatment of sludge to form flocs.

[0052] For example, the third drive component 303 uses a motor.

[0053] Specifically, such as Figure 6 As shown, the concentration and dehydration section 4 includes: a concentration and dehydration tank 401, a fourth drive component 402, a spiral shaft 403, spiral blades 404, a fixed ring 405, and a moving ring 406. The fourth drive component 402 is installed inside the concentration and dehydration tank 401. The spiral shaft 403 passes through the concentration and dehydration tank 401 and is rotatably connected to it. The drive end of the fourth drive component 402 is connected to the spiral shaft 403. The spiral blades 404 are located inside the concentration and dehydration tank 401 and are installed on the spiral shaft. The outer circumference of 403, and the spiral blades 404 of the thickening section are called sparse, and the spiral blades 404 of the dewatering section are called dense. The fixed ring 405 is installed in the thickening and dewatering tank 401 and is located in the area where the thickening section is located. The moving ring 406 is installed in the thickening and dewatering tank 401 and is located in the area where the dewatering section is located. The fourth driving component 402 is started, and the spiral blades 404 are driven to rotate through the fourth driving component 402. With the cooperation of the fixed ring 405 and the moving ring 406, the sludge dewatering treatment is realized.

[0054] For example, the fourth drive component 402 uses a motor.

[0055] In this embodiment, the first adjustment unit 5 includes: a filter box 501, a filter screen 502, a first drain outlet 503, a scraper 504, and a first driving member 505. The filter screen 502 is installed inside the filter box 501 and is inclined. The first drain outlet 503 is located at the bottom of the filter box 501. The scraper 504 is located above the filter screen 502 and is slidably connected to the filter box 501, extending to the outside of the filter box 501. The first driving member 505 is installed outside the filter box 501, and its telescopic end is connected to the scraper 504. Thus, the sludge entering the filter box 501 through the feed pipe 1 can have its moisture filtered out by the filter screen 502, thereby increasing the concentration of sludge entering the sludge treatment unit 3. The first driving member 505 drives the scraper 504 to move, thereby scraping off the sludge remaining on the filter screen 502.

[0056] For example, the first drive component 505 uses a cylinder.

[0057] In this embodiment, the second adjustment unit 6 includes: a dilution tank 601, a dilution pipe 602, a second drive unit 603, a first rotating rod 604, and a first stirring rod 605. The dilution pipe 602 is installed on the top of the dilution tank 601, the second drive unit 603 is installed on the top of the dilution tank 601, the first rotating rod 604 passes through the dilution tank 601, and one end of the first rotating rod 604 is connected to the drive end of the second drive unit 603. The first stirring rod 605 is located inside the dilution tank 601 and is connected to the first rotating rod 604. Thus, the second drive unit 603 is activated, and diluent (which can be clean water or wastewater remaining after sludge dewatering) is added to the dilution tank 601 through the dilution pipe 602. The second drive unit 603 drives the first stirring rod 605 to rotate, thereby diluting the sludge to be dewatered and reducing the concentration of the sludge entering the sludge treatment unit 3.

[0058] For example, the second drive component 603 uses a motor.

[0059] In this embodiment, the feed pipe 1 and the first regulating section 5 are connected by a first connecting pipe 8, which is equipped with a first valve 801; the feed pipe 1 and the second regulating section 6 are connected by a second connecting pipe 9, which is equipped with a second valve 901; the sludge treatment section 3 and the thickening and dewatering section 4 are connected by a third connecting pipe 10, which is equipped with a pump 11. Therefore, when the concentration sensor 7 detects that the sludge concentration is less than the first standard concentration value C1, the first valve 801 is opened, allowing the sludge in the feed pipe 1 to enter the first regulating section 5 through the first connecting pipe 8 for filtration; when the concentration sensor 7 detects that the sludge concentration is greater than the second standard concentration value C2, the second valve 901 is opened, allowing the sludge in the feed pipe 1 to enter the second regulating section 6 through the second connecting pipe 9 for dilution; and the pump 11 is started to pump the chemically treated sludge into the thickening and dewatering section 4 for thickening and dewatering.

[0060] Specifically, the first standard concentration value C1 is less than the second standard concentration value C2.

[0061] In this embodiment, the thickening and dewatering section 4 is inclined, with the side of the thickening and dewatering section 4 closer to the sludge treatment section 3 lower than the side of the thickening and dewatering section 4 farther from the sludge treatment section 3. A water collection tank 12 is provided at the bottom of the thickening and dewatering section 4, and a drain pipe 13 is installed on the side of the water collection tank 12 closer to the sludge treatment section 3. A sludge discharge hopper 14 is provided on the side of the thickening and dewatering section 4 farther from the sludge treatment section 3. Thus, the dewatered sludge is discharged through the sludge discharge hopper 14, and the remaining wastewater flows towards the side closer to the sludge treatment section 3 under the action of gravity and is finally discharged through the drain pipe 13.

[0062] The working process of this novel screw dewatering machine is as follows:

[0063] First, the concentration of the sludge to be dewatered entering the feed pipe 1 is detected by the concentration sensor 7 to obtain the concentration value C of the sludge to be dewatered in real time.

[0064] Finally, if the concentration value C of the sludge to be dewatered is less than the first standard concentration value C1, the first valve 801 is opened so that the sludge to be dewatered passes through the first regulating section 5, the sludge treatment section 3 and the thickening and dewatering section 4 in sequence, and undergoes filtration treatment, chemical dosing treatment and thickening and dewatering treatment in sequence. Finally, the sludge is discharged through the sludge discharge hopper 14 and the sewage is discharged through the drain pipe 13.

[0065] If the concentration C of the sludge to be dewatered is greater than or equal to the first standard concentration C1 and less than or equal to the second standard concentration C2, then the second valve 901 is opened so that the sludge to be dewatered passes through the second regulating section 6 (only passing through the second regulating section 6 without being diluted in the second regulating section 6), the sludge treatment section 3 and the concentration and dewatering section 4 in sequence, and is subjected to chemical dosing and concentration and dewatering treatment in sequence. Finally, the sludge is discharged through the sludge discharge hopper 14 and the sewage is discharged through the drain pipe 13.

[0066] If the concentration value C of the sludge to be dewatered is greater than the second standard concentration value C2, then the second valve 901 is opened so that the sludge to be dewatered passes through the second regulating section 6, the sludge treatment section 3 and the thickening and dewatering section 4 in sequence, and undergoes dilution treatment, chemical dosing treatment and thickening and dewatering treatment in sequence. Finally, the sludge is discharged through the sludge discharge hopper 14 and the sewage is discharged through the drain pipe 13.

[0067] In summary, this invention uses concentration sensor 7 to detect the concentration of the sludge to be dewatered and selects filtration or dilution treatment based on the detection results. Compared with existing methods that directly add chemicals and concentrate the sludge for dewatering, this method has a simple structure and is easy to operate. It can filter or dilute the sludge before adding chemicals to ensure that the concentration of the sludge entering the sludge treatment unit 3 meets the requirements, thereby improving the dewatering efficiency and effect of the sludge.

[0068] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A screw press dewatering machine with sludge concentration adjustment function, characterized in that, include: The feed pipe (1), sludge concentration adjustment mechanism (2), sludge treatment section (3) and concentration and dewatering section (4) are connected in sequence. The sludge treatment section (3) is used for chemical treatment of sludge to form flocs, and the concentration and dewatering section (4) is used for concentration and dewatering treatment of sludge. The sludge concentration adjustment mechanism (2) includes: The first regulating part (5) and the second regulating part (6) are connected to the outlet end of the feed pipe (1) and the outlet end of the first regulating part (5) and the second regulating part (6) are connected to the inlet end of the sludge treatment part (3). The first regulating part (5) is used for sludge filtration and the second regulating part (6) is used for sludge dilution. A concentration sensor (7) is located inside the feed pipe (1) and is used to detect the concentration of sludge in the feed pipe (1) in real time.

2. The screw press dewatering machine with sludge concentration adjustment function as described in claim 1, characterized in that: The first adjustment unit (5) includes: The filter box (501), filter screen (502), and first drain outlet (503) are provided. The filter screen (502) is installed inside the filter box (501) and is inclined. The first drain outlet (503) is located at the bottom of the filter box (501).

3. The screw press dewatering machine with sludge concentration adjustment function as described in claim 2, characterized in that: The first adjustment unit (5) further includes: A scraper (504) and a first drive member (505) are provided. The scraper (504) is located above the filter screen (502) and is slidably connected to the filter box (501). The scraper (504) extends to the outside of the filter box (501). The first drive member (505) is installed outside the filter box (501), and the telescopic end of the first drive member (505) is connected to the scraper (504).

4. The screw press dewatering machine with sludge concentration adjustment function as described in claim 1, characterized in that: The second adjustment unit (6) includes: A dilution tank (601) and a dilution tube (602), the dilution tube (602) being mounted on top of the dilution tank (601).

5. The screw press dewatering machine with sludge concentration adjustment function as described in claim 4, characterized in that: The second adjustment unit (6) further includes: The system comprises a second driving component (603), a first rotating rod (604), and a first stirring rod (605). The second driving component (603) is mounted on the top of the dilution tank (601). The first rotating rod (604) passes through the dilution tank (601), and one end of the first rotating rod (604) is connected to the driving end of the second driving component (603). The first stirring rod (605) is located inside the dilution tank (601) and is connected to the first rotating rod (604).

6. The screw press dewatering machine with sludge concentration adjustment function as described in claim 1, characterized in that: The feed pipe (1) is connected to the first adjustment part (5) through a first connecting pipe (8), and the first connecting pipe (8) is provided with a first valve (801).

7. The screw press dewatering machine with sludge concentration adjustment function as described in claim 1, characterized in that: The feed pipe (1) and the second adjustment part (6) are connected by a second connecting pipe (9), and the second connecting pipe (9) is provided with a second valve (901).

8. The screw press dewatering machine with sludge concentration adjustment function as described in claim 1, characterized in that: The sludge treatment section (3) and the concentration and dewatering section (4) are connected by a third connecting pipe (10), and the third connecting pipe (10) is equipped with a pump (11).

9. The screw press dewatering machine with sludge concentration adjustment function as described in claim 1, characterized in that: The concentration and dewatering section (4) is inclined, and the side of the concentration and dewatering section (4) closer to the sludge treatment section (3) is lower than the side of the concentration and dewatering section (4) away from the sludge treatment section (3).

10. The screw press dewatering machine with sludge concentration adjustment function as described in claim 1, characterized in that: The bottom of the concentration and dewatering section (4) is provided with a water collection tank (12), and a drain pipe (13) is installed on the side of the water collection tank (12) close to the sludge treatment section (3). A sludge discharge hopper (14) is provided on the side of the concentration and dewatering section (4) away from the sludge treatment section (3).

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