Quantitative feeding device for sludge treatment agent and use mode of quantitative feeding device

Abstract

The invention discloses a quantitative feeding device for a sludge treatment agent and a use mode, and belongs to the technical field of sewage treatment. The device comprises a feeding bin used for adding a sludge treatment agent into a sludge conditioning tank, the bottom of the feeding bin is connected with a feeding pipe and a driving shaft, the lower end of the driving shaft extends downwards into the feeding pipe, and the upper end of the driving shaft extends upwards to the top of the feeding bin and then is connected with a first driver; the discharging openings are formed in the adjacent material distribution discs in a staggered and coherent mode, and discharging elements connected with the driving shaft are arranged between the material distribution discs; wherein the discharging element comprises a baffle, at least two scraping plates are vertically arranged on the baffle, and a discharging grid is defined by the two scraping plates and the inner wall of the feeding pipe. According to the invention, quantitative discharge of the sludge conditioning tank can be realized, so that an operator can quantitatively add a sludge treatment agent for sludge pretreatment according to the amount of sludge needing to be treated in the sewage treatment process, thereby reducing the sewage treatment cost and improving the sewage treatment efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to a sludge treatment agent quantitative adding device and use mode, belonging to the sewage treatment technical field. BACKGROUND

[0002] Sludge is an inevitable by-product of sewage treatment, and its output is increasing year by year. The annual sludge output in China is expected to exceed 90 million tons. In the current sludge treatment technology system, the dewatering link is crucial, Because the moisture content of sludge is high, it is usually necessary to first pass it into a sludge conditioning tank before dewatering, and to reduce the moisture content of the sludge by adding chemical agents to the tank, thereby facilitating subsequent dewatering of the sludge.

[0003] In the prior art, the addition of sludge treatment agents is not accurately controlled, and the addition of agents each time can only be judged according to experience, which can easily lead to excessive or insufficient addition of agents. Excessive addition of agents will increase the cost of sludge treatment, and insufficient addition of agents will affect the efficiency of sludge treatment. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a sludge treatment agent quantitative adding device and use mode, which solves the problem of inaccurate control of sludge treatment agent addition in the prior art.

[0005] The technical problem to be solved by the present application is solved by the following technical solution: a sludge treatment agent quantitative adding device, comprising: A feeding bin is arranged above a sludge conditioning tank for adding sludge treatment agents to the sludge conditioning tank. The bottom of the feeding bin is connected to a feeding pipe, and the lower end of the feeding pipe is open and the open end extends into the inner cavity of the sludge conditioning tank. A drive shaft is arranged in the inner cavity of the feeding bin. The lower end of the drive shaft extends downward into the feeding pipe, and the upper end extends upward to the top of the feeding bin and is connected to a driver one at the end. A plurality of distribution plates are arranged equidistantly in the feeding pipe. Adjacent distribution plates are arranged with staggered and continuous discharge ports. Discharge elements connected to the drive shaft are arranged between the distribution plates. The discharge element includes a baffle, at least two scrapers are vertically arranged on the baffle, and the two scrapers and the inner wall of the feeding pipe form a discharge compartment. Each discharge compartment rotates synchronously with the drive shaft and passes through the corresponding discharge port in turn.

[0006] By adopting the technical scheme, quantitative discharge of the sludge conditioning tank can be realized, so that the operator in the sewage treatment process can quantitatively add sludge treatment reagent for sludge pretreatment according to the required sludge amount, the sludge treatment reagent can be effectively prevented from being added too much or too little, accurate addition of the sludge treatment reagent is realized, and therefore, the sewage treatment cost is reduced, and the sewage treatment efficiency is improved.

[0007] The application is further provided with a spiral blade arranged in the feeding pipe, which rotates with the driving shaft.

[0008] By adopting the technical scheme, the spiral blade is arranged to enable the sludge treatment reagent to be continuously and stably discharged during the addition process, and prevent accumulation and blockage during the discharging process.

[0009] The application is further provided with an air blowing channel arranged in the driving shaft, which extends to an air outlet at the lower end of the driving shaft.

[0010] By adopting the technical scheme, air is blown into the air blowing channel and discharged from the air outlet, so that the sludge treatment reagent can be blown, and the sludge treatment reagent is prevented from adhering to the pipe opening of the feeding pipe after being wetted by the sewage, thereby preventing blockage.

[0011] The application is further provided with at least three air outlets, which are equidistantly and obliquely arranged at the lower end of the driving shaft.

[0012] By adopting the technical scheme, an air curtain can be effectively formed, so that most of the discharged air flows in all directions, which is beneficial to pushing the sludge treatment reagent outwards.

[0013] The application is further provided with a circular-arc inclined inner wall formed by inwardly contracting the opening at the lower end of the feeding pipe, and the air outlet is arranged to spray air towards the inclined inner wall, so that the air flow discharged from the air outlet flows downwards along the circular-arc inclined inner wall and is discharged.

[0014] By adopting the technical scheme, the sludge treatment reagent adhered to the circular-arc inclined inner wall can be blown away by the air flow discharged from the air outlet, so that the discharging speed of the sludge treatment reagent is improved, and the risk of blockage of the discharge opening at the lower end of the feeding pipe is reduced.

[0015] The application is further provided with a large material bin connected to the feeding bin, a material conveying pipe connected between the large material bin and the feeding bin, a second driver connected to the other end of the material conveying pipe, a spiral conveying shaft arranged in the material conveying pipe and connected to the second driver, and a discharging pipe arranged at the bottom of the large material bin and communicated with the material conveying pipe.

[0016] By adopting the technical scheme, the sludge treatment agent in the large bin can be quickly conveyed to the feeding bin by driving the screw conveying shaft to rotate, so that the feeding bin can continuously and stably convey the sludge treatment agent to the sludge conditioning tank, and the efficiency of sludge treatment is improved.

[0017] The application further provides that the screw piston rod is arranged in the discharging pipe, the lower end of the screw piston rod is rotationally connected with a pushing rod, an eccentric disc is arranged on the screw conveying shaft to rotate synchronously, and the pushing rod is slidingly connected to the outer ring of the eccentric disc, so that the screw piston rod rises and falls synchronously with the rotation of the eccentric disc.

[0018] By adopting the technical scheme, the screw piston rod is arranged in the discharging pipe, and the eccentric disc is arranged to make the screw piston rod move up and down in the discharging pipe when the screw conveying shaft rotates to convey the sludge treatment agent, so that the discharging speed of the sludge treatment agent in the large bin is accelerated, and the sludge treatment agent in the discharging pipe is always in a moving state, so that the sludge treatment agent is effectively prevented from being accumulated and blocked in the discharging pipe.

[0019] The application further provides that the diameter of the piston rod is smaller than the inner diameter of the discharging pipe.

[0020] By adopting the technical scheme, the discharging speed of the sludge treatment agent can be improved.

[0021] The application further provides that a fixing chuck is arranged on the screw piston rod, the fixing chuck is fixed to the middle part of the discharging pipe by a plurality of fixing rods, and the screw piston rod rotates forward and backward synchronously when rising and falling.

[0022] By adopting the technical scheme, the screw piston rod can rotate when rising and falling, so that the sludge treatment agent in the discharging pipe is further pushed from the discharging pipe to the conveying pipe, and the conveying efficiency of the sludge treatment agent is further improved.

[0023] The application also relates to a use mode of the sludge treatment agent quantitative feeding device, and specifically includes the following operation steps. S1, conveying sludge to be treated to a sludge conditioning tank, and adding sludge conditioning agent to the sludge to condition the sludge; S2, monitoring the liquid level in the sludge conditioning tank in real time by a liquid level sensor, and transmitting the monitoring data to a control module; S3, controlling the rotation power of the driver one according to the liquid level in the sludge conditioning tank, and discharging the sludge treatment agent in the feeding bin to the sludge conditioning tank; S4, introducing dry gas flow into the air blowing channel; S5, the treated sludge is introduced into a plate dewatering machine, the plate is closed and the hydraulic system is started, the pressure is gradually increased to 1Mpa, the sludge forms a filter cake between filter cloths, the pressure is maintained for at least 1 hour, the plate is loosened, and the filter cake on the plate is removed, and the treatment of the sludge is completed.

[0024] By using the above technical scheme, the amount of sewage in the sludge conditioning tank is monitored in real time, the addition speed and amount of sludge treatment agent are reasonably controlled according to the amount of sewage in the sludge conditioning tank, so that the sewage can be pretreated with the best sludge conditioning agent feeding ratio, the sewage treatment efficiency can be effectively improved, the waste of sludge treatment agent can be avoided, and the treatment cost can be reduced.

[0025] The beneficial effects of the present application are: By setting the driving shaft in the feeding pipe, cooperating with the setting of the distributing disc and the discharging element, the feeding bin can quantitatively deliver the sludge treatment agent into the sludge conditioning tank, realize accurate addition of the agent, reduce the cost of sewage treatment, and improve the sewage treatment efficiency. The driving shaft is controlled to rotate by the driver and drive the discharging element to rotate, so that the sludge treatment agent can uniformly descend along the feeding pipe and be separated by the discharging element, forming a multiple interval type discharging mode. The discharging grid formed between the discharging element and the feeding pipe can accurately control the amount of sludge treatment agent received each time, so that the sludge treatment agent is transported to the sludge conditioning tank by rotating, and the process of adding the sludge treatment agent to the sludge conditioning tank is more controllable.

[0026] By controlling the rotation speed of the driving shaft, the rotation speed of the discharging element can be controlled, so that the opening and closing time of the discharging port on the distributing disc can be controlled. The longer the opening time is, the more sludge treatment agent falls into the discharging grid, and the larger the amount of sludge treatment agent discharged into the sludge conditioning tank at a time is, and vice versa. By controlling the rotation speed of the driving shaft, the operator can adjust the addition speed and single addition amount of the sludge treatment agent in real time when adding the sludge treatment agent, so as to achieve accurate addition of the sludge treatment agent, so that the sludge conditioning tank can accurately control the amount of sludge treatment agent to be added according to the amount of sludge to be treated, and the treatment efficiency of the sludge can be greatly improved.

[0027] By connecting another large bin on the feeding bin, continuously conveying sludge treatment agent into the feeding bin, the sludge treatment efficiency can be improved, and the feeding bin can stably supply sludge treatment agent to the sludge conditioning tank. By setting a spiral conveying shaft in the conveying pipe, automatic addition of sludge conditioning agent can be realized, and at the same time, a spiral piston is arranged in the discharge pipe, so that the sludge treatment agent in the large bin can continuously and stably fall into the conveying pipe, improving the discharge efficiency of the sludge treatment agent, and at the same time, the movement mode of the spiral piston rising and falling makes the sludge treatment agent in the discharge pipe always keep in motion state, which can prevent the discharge pipe from being blocked.

[0028] By setting the exhaust port at the end of the drive shaft, the sludge treatment agent at the feeding pipe opening position can be blown out, thereby preventing the sludge treatment agent from sticking to the feeding pipe opening due to water and causing blockage. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a schematic view of the three-dimensional structure of the present application; Figure 2 It is a sectional view of the internal structure of the feeding bin and the sludge conditioning tank of the present application; Figure 3 It is a schematic view of the internal structure of the feeding pipe of the present application; Figure 2 It is an enlarged schematic view of the structure at A in the present application; Figure 4 It is a schematic view of the internal structure of the feeding pipe of the present application; Figure 5 It is a schematic view of the internal structure of the feeding pipe of the present application; Figure 6 It is a schematic view of the internal structure of the feeding pipe of the present application; Figure 7 It is a schematic view of the internal structure of the feeding pipe of the present application; Figure 8 It is a schematic view of the internal structure of the feeding pipe of the present application; Figure 9 It is a flow chart of sludge dewatering treatment of the present application.

[0030] In the figure: 1, feeding bin; 2, sludge conditioning tank; 3, feeding pipe; 301, circular arc inclined inner wall; 4, drive shaft; 5, drive one; 6, distribution disc; 601, discharge port; 7, discharge element; 701, scraper; 702, baffle; 703, discharge grid; 8, spiral blade; 9, air blowing channel; 10, exhaust port; 11, large bin; 12, conveying pipe; 13, drive two; 14, spiral conveying shaft; 15, discharge pipe; 16, spiral piston rod; 17, eccentric disc; 18, support rod; 19, lifting ring; 20, fixed chuck; 21, push rod; 22, connecting seat; 23, spherical joint. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific drawings.

[0032] As shown in Figure 1 and Figure 2 , a sludge treatment agent quantitative dosing device includes a feeding bin 1 arranged above a sludge conditioning tank 2, the feeding bin 1 being used for adding sludge treatment agent into the sludge conditioning tank 2, and the feeding bin 1 being connected with a feeding pipe 3 at the bottom, the feeding pipe 3 being open at the lower end and the open end extending into the inner cavity of the sludge conditioning tank 2, and a plurality of support rods 18 being arranged above the sludge conditioning tank 2, the end portions of the upper ends of the support rods 18 being inwardly contracted and connected with a lifting ring 19 at the end portions, the plurality of support rods 18 and the lifting ring 19 being overlapped to form a support frame, and the feeding bin 1 being fixed above the sludge conditioning tank 2 through the support frame.

[0033] A driving shaft 4 is arranged in the feeding bin 1, the driving shaft 4 extending downwardly into the feeding pipe 3 at the lower end and extending upwardly to the top of the feeding bin 1 at the upper end and being connected with a driver I 5 at the end portion. A spiral blade 8 is arranged in the feeding pipe 3, the spiral blade 8 rotating with the driving shaft 4. In this embodiment, the spiral blade 8 is arranged on the driving shaft 4, and the axis of the spiral blade 8 coincides with the axis of the driving shaft 4.

[0034] As shown in Figure 3 and Figure 4 , a plurality of distribution plates 6 are also arranged at equal intervals in the feeding pipe 3, and the discharge ports 601 of the adjacent distribution plates 6 are staggered and arranged continuously, and a discharge element 7 connected with the driving shaft 4 is arranged between the distribution plates 6. The discharge element 7 includes a baffle 702, at least two scraper plates 701 being vertically arranged on the baffle 702, and the two scraper plates 701 and the inner wall of the feeding pipe 3 surrounding a discharging compartment 703, each discharging compartment 703 rotating synchronously with the driving shaft 4 and sequentially passing through the corresponding discharge port 601.

[0035] In this embodiment, the number of the distribution plates 6 is three, the distribution plates 6 being fixed on the inner wall of the feeding pipe 3, the driving shaft 4 penetrating through the centers of the three distribution plates 6 and being fixedly connected with the two discharge elements 7 arranged between the three distribution plates 6, and the discharge elements 7 being driven to rotate by the driving shaft 4.

[0036] Specifically, as shown in Figure 5As shown, the discharge element 7 is composed of two horizontal baffles 702 and two vertical scrapers 701 spliced ​​together. During installation, it is clamped between two distribution plates 6. The two horizontal baffles 702 of the discharge element 7 are respectively attached to the two distribution plates 6, and the discharge element 7 rotates under the drive of the drive shaft 4. The distribution plate 6 is specifically a circular plate with a certain arc angle missing. The missing arc angle area is the discharge port 601 on the distribution plate 6. In this embodiment, the distribution plate 6 is missing a quarter circle. The discharge ports 601 between adjacent distribution plates 6 are continuously arranged. That is, the position of the discharge port 601 on the uppermost distribution plate 6 can be directly aligned with the discharge port 601 on the middle distribution plate 6 when rotated 90 degrees clockwise, and the position of the discharge port 601 on the middle distribution plate 6 can be directly aligned with the discharge port 601 on the lowermost distribution plate 6 when rotated 90 degrees clockwise.

[0037] It should be noted that the two discharge elements 7 are installed such that the planes of their two scrapers 701 overlap, meaning that the two discharge elements 7 and the discharge grid 703 enclosed by the inner wall of the feeding pipe 3 are in corresponding vertical positions. The discharge ports 601 on the three distribution discs 6 form three discharge ports 601: upper, middle, and lower. The two discharge elements 7 and the inner wall of the feeding pipe 3 enclose two discharge grids 703.

[0038] like Figure 4 As shown, to better illustrate the internal structure of the feeding pipe 3, the lower discharge element 7 of the feeding pipe 3 is omitted in this figure. When adding sludge treatment agent to the sludge conditioning tank 2, the drive shaft 4 controls the rotation of the spiral blade 8, causing the sludge treatment agent in the feeding bin 1 to continuously enter the feeding pipe 3. With the synchronous rotation of the discharge element 7, the discharge port 601 on the uppermost distribution plate 6 opens, and the sludge treatment agent in the feeding pipe 3 falls through the discharge port 601 into the discharge grid 703 formed by the two scrapers 701 and the inner wall of the feeding pipe 3. After the discharge element 7 rotates ninety degrees, the uppermost discharge port 601 is blocked and closed by the baffle 702 above the discharge element 7, completing a single feeding of the discharge grid 703. As the drive shaft 4 continues to rotate, the middle discharge port 601 opens, and the longitudinally arranged scraper 701 scrapes the sludge treatment agent in the discharge grid 703 and discharges it from the middle discharge port 601 into the lower discharge grid 703. As the discharge element 7 continues to rotate 90 degrees, the middle discharge port 601 closes and the bottom discharge port 601 opens. The scraper 701 on the lower discharge element 7 also hangs the sludge treatment agent in the lower discharge grid 703. After the sludge treatment agent is discharged from the bottom discharge port 601, it smoothly enters the sludge conditioning tank 2, completing the addition of a single sludge treatment agent.

[0039] Through the arrangement of the above structure, the feeding bin 1 can sequentially and orderly add sludge conditioning agent to the sludge conditioning tank 2, realizing quantitative addition of sludge treatment agent and avoiding over- or under- addition of the agent. The efficiency of sludge pretreatment can be effectively improved, the consumption of sludge treatment agent can be reduced, and the processing cost can be reduced. The accurate addition amount can be controlled during the addition of the sludge treatment agent, and the corresponding control system can realize full intelligent and automatic feeding.

[0040] As shown in Figure 8 , in other embodiments, the discharging element 7 is spliced by four scrapers 701 and four baffles 702, which can form two discharge compartments 703 in cooperation with the inside of the feeding tank. The two discharge compartments 703 are symmetrically arranged, and the continuous discharge of the sludge treatment agent can be realized by arranging two discharge compartments 703, which can improve the discharge speed and continuity of the sludge treatment agent. When the previous discharge compartment 703 completes the discharge and rotates to the next discharge port 601 for discharging, the other discharge compartment 703 can be synchronously rotated to the position of the discharge port 601 of the uppermost distribution disc 6 to receive the sludge treatment agent in the feeding bin 1.

[0041] Further, as shown in Figure 2 and Figure 3 , the driving shaft 4 is internally provided with an air blowing channel 9, and the air blowing channel 9 extends an air outlet 10 at the lower end of the driving shaft 4. By blowing air into the air blowing channel 9 and discharging it from the air outlet 10, the sludge treatment agent can be blown to prevent the sludge treatment agent from adhering to the pipe opening of the feeding pipe 3 after being wetted by sewage, causing blockage. Specifically, as shown in Figure 2 , the upper end of the air blowing channel 9 extends upward and is sleeved with an outer shell that can rotate relative to the driving shaft 4 at the middle segment area of the driving shaft 4. The outer shell is internally provided with a cavity, and a gas pipe is connected to the outer shell, and a gas blowing device is connected to the gas pipe. Air flow is blown into the gas pipe by the gas blowing device, flows through the gas pipe, enters the inner cavity of the outer shell, and then enters the air blowing channel 9, and finally flows downward along the air blowing channel 9.

[0042] Further, the number of air outlets 10 is at least three, which are equally spaced and obliquely arranged at the lower end of the driving shaft 4. The lower end of the feeding pipe 3 is inwardly contracted to form a circular arc inclined inner wall 301, and the air outlet 10 is directed toward the inclined inner wall. After the air flow is discharged from the air outlet 10, it flows downward along the circular arc inclined inner wall 301 and is discharged.

[0043] The curved, inclined inner wall 301 allows the sludge treatment agent discharged from the discharge port 601 to fall along the curved, inclined inner wall 301, improving discharge efficiency and reducing the risk of moisture from the sludge conditioning tank 2 entering the feeding pipe 3. Combined with the continuously outward-bulging airflow, the curved, inclined inner wall 301 effectively guides the airflow, ensuring a stable flow direction and allowing it to be discharged from the feeding pipe 3 along the curved, inclined inner wall 301, thus improving the discharge efficiency of the sludge treatment agent.

[0044] On the other hand, the continuous blowing of dry airflow can prevent sludge treatment agents from sticking to the inlet of feed pipe 3 after contacting sewage.

[0045] like Figure 2 As shown, at least two sections of the drive shaft 4 are equipped with clamping components, such as ball bearings, which are fixed to the inner wall of the feeding bin 1 by multiple fixing rods. This fixes the drive shaft 4 in the central region of the cavity inside the feeding bin 1, preventing it from vibrating during rotation and improving the stability of the entire device.

[0046] like Figure 1 As shown, the feeding hopper 1 is connected to the large hopper 11, and a conveying pipe 12 connects the large hopper 11 and the feeding hopper 1. The other end of the conveying pipe 12 is connected to a second driver 13. The second driver 13 controls the conveying pipe 12 to continuously deliver sludge treatment agents into the feeding hopper 1, thereby ensuring that the sludge treatment agents in the feeding hopper 1 are continuously and stably fed.

[0047] Specifically, such as Figure 6 and Figure 7 As shown, a screw conveyor shaft 14 is installed inside the conveying pipe 12, and the screw conveyor shaft 14 is connected to the second driver 13. A discharge pipe 15 is installed at the bottom of the large hopper 11, and the discharge pipe 15 is connected to the conveying pipe 12. A screw piston rod 16 is installed inside the discharge pipe 15, and the maximum diameter of the piston rod is smaller than the inner diameter of the discharge pipe 15. A connecting seat 22 is installed at the lower end of the screw piston rod 16, and a push rod 21 is rotatably connected to the lower part of the connecting seat 22. A spherical connector 23 is installed at the lower end of the push rod 21. A synchronously rotating eccentric disc 17 is installed on the screw conveyor shaft 14. An annular locking groove is provided on the outer ring of the eccentric disc. The spherical connector 23 at the lower end of the push rod 21 is slidably locked onto the outer ring of the eccentric disc. The screw piston rod 16 rises and falls synchronously with the rotation of the eccentric disc.

[0048] Furthermore, a fixed chuck 20 is fitted on the spiral piston rod 16. The fixed chuck 20 is fixed to the middle of the feed tube 15 by multiple fixed rods. The spiral piston rod 16 rotates forward and backward simultaneously while rising and falling.

[0049] By setting the spiral piston rod 16 in the downcomer 15, cooperating with the setting of the eccentric disc, the spiral piston rod 16 can continuously move up and down in the downcomer 15 when the spiral conveying shaft 14 rotates to convey the sludge treatment agent, thereby accelerating the discharging speed of the sludge treatment agent in the large bin 11. The sludge treatment agent in the downcomer 15 is always in a state of movement, which can effectively avoid the accumulation and blockage of the sludge treatment agent in the downcomer 15. The spiral piston rod 16 can also rotate while ascending and descending, thereby further pushing the sludge treatment agent in the downcomer 15 from the downcomer 15 to the feeding pipe 12, and further improving the conveying efficiency of the sludge treatment agent.

[0050] Specifically, in the operation process, a corresponding opening and closing valve is arranged at the upper opening of the downcomer 15. When it is necessary to supplement the sludge treatment agent into the feeding bin 1, the valve is opened, so that the sludge treatment agent in the large bin 11 enters the feeding pipe 12 through the downcomer 15. By controlling the rotation of the spiral conveying shaft 14, the sludge treatment agent in the feeding pipe 12 is continuously pushed into the feeding bin 1. While the spiral conveying shaft 14 rotates, the eccentric disc rotates synchronously with the spiral conveying shaft 14, so that the point position of the spherical connector 23 clamped on the eccentric disc changes continuously, and then the whole spiral piston rod 16 is pushed up and down by the pushing rod 21. Since the spiral piston rod 16 is connected to the center of the fixed chuck 20, when the spiral piston rod 16 ascends and descends, the clamping point position relative to the fixed chuck 20 changes, thereby generating rotation relative to the fixed chuck 20. Through the mutual linkage of the above structure, the rapid feeding and conveying of the sludge treatment agent in the large bin 11 are realized, which can prevent the sludge treatment agent in the large bin 11 from being blocked in the downcomer 15, and the whole discharging efficiency can be greatly improved, which is beneficial to improve the feeding efficiency of the sludge treatment agent.

[0051] As shown in Figure 9 The present application also relates to a use mode of a sludge treatment agent quantitative feeding device, specifically comprising the following operation steps: S1, conveying the sludge to be treated into the sludge conditioning tank 2, and adding sludge conditioning agent to condition the sludge; S2, monitoring the liquid level in the sludge conditioning tank 2 in real time by the liquid level sensor, and transmitting the monitoring data to the control module; S3, controlling the rotation power of the drive one 5 according to the liquid level in the sludge conditioning tank 2, and discharging the sludge treatment agent in the feeding bin 1 into the sludge conditioning tank 2; S4, introducing dry gas flow into the air channel 9; S5, the treated sludge into the plate dewatering machine, close the plate and start the hydraulic system, the pressure gradually increased to 1Mpa, sludge between filter cloth formed filter cake, maintain the pressure for at least 1 hour. Loosen the plate, remove the filter cake on the plate, complete the sludge treatment.

[0052] Through the above operation steps, the sludge treatment capacity in the sludge conditioning tank 2 and the adding amount of sludge treatment agent can be effectively controlled, so that the sludge can be treated with an optimal dosage ratio during pretreatment, the sludge pretreatment efficiency can be effectively improved, the excessive addition of sludge treatment agent can be avoided, the waste of sludge treatment agent can be reduced, the utilization rate of sludge treatment agent can be improved, and the cost of sludge pretreatment can be reduced.

[0053] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and various changes and improvements can be made without departing from the spirit and scope of the present application. These changes and improvements are all within the scope of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A sludge treatment agent quantitative dosing device, characterized in that, include: Feeding bin (1) is located above sludge conditioning tank (2) and is used to add sludge treatment agent into sludge conditioning tank (2). Feeding pipe (3) is connected to the bottom of feeding bin (1). The lower end of feeding pipe (3) is open and the open end extends into the inner cavity of sludge conditioning tank (2). A drive shaft (4) is located in the inner cavity of the feeding bin (1). The lower end of the drive shaft (4) extends downward into the feeding pipe (3), and the upper end extends upward to the top of the feeding bin (1) and is connected to a driver (5) at the end. Several material distribution discs (6) are equidistantly arranged in the feeding pipe (3), and the discharge ports (601) on adjacent material distribution discs (6) are staggered and connected. A discharge element (7) connected to the drive shaft (4) is provided between the material distribution discs (6). The discharge element (7) includes a baffle (702), on which at least two scrapers (701) are vertically arranged. The two scrapers (701) and the inner wall of the feeding pipe (3) form a discharge grid (703). Each discharge grid (703) rotates synchronously with the drive shaft (4) and passes through the corresponding discharge port (601) in sequence.

2. The sludge treatment agent quantitative dosing device according to claim 1, characterized in that: The feeding pipe (3) is provided with a spiral blade (8), which rotates with the drive shaft (4).

3. The sludge treatment agent quantitative dosing device according to claim 1, characterized in that: The drive shaft (4) is provided with an air blowing channel (9), and the air blowing channel (9) extends to the lower end of the drive shaft (4) to produce an exhaust port (10).

4. The sludge treatment agent quantitative dosing device according to claim 3, characterized in that: The number of exhaust ports (10) is at least three, which are equidistant in the circumferential direction and obliquely opened at the lower end of the drive shaft (4).

5. The sludge treatment agent quantitative dosing device according to claim 3, characterized in that: The lower end of the feeding pipe (3) contracts inward to form an arc-shaped inclined inner wall (301). The exhaust port (10) sprays air towards the inclined inner wall. After the airflow is discharged from the exhaust port (10), it flows downward along the arc-shaped inclined inner wall (301) and is discharged.

6. The sludge treatment agent quantitative dosing device according to claim 1, characterized in that: The feeding bin (1) is connected to a large hopper (11). A conveying pipe (12) is connected between the large hopper (11) and the feeding bin (1). The other end of the conveying pipe (12) is connected to a second driver (13). A screw conveying shaft (14) is provided inside the conveying pipe (12). The screw conveying shaft (14) is connected to the second driver (13). A discharge pipe (15) is provided at the bottom of the large hopper (11). The discharge pipe (15) is connected to the conveying pipe (12).

7. The sludge treatment agent quantitative dosing device according to claim 6, characterized in that: The feed pipe (15) is provided with a spiral piston rod (16), and the lower end of the spiral piston rod (16) is rotatably connected to a push rod (21). The spiral conveying shaft (14) is provided with a synchronously rotating eccentric disc (17). The push rod (21) is slidably engaged with the outer ring of the eccentric disc. The spiral piston rod (16) rises and falls synchronously with the rotation of the eccentric disc.

8. The sludge treatment agent quantitative dosing device according to claim 1, characterized in that: The sludge conditioning tank (2) is connected to a plate and frame dewatering machine. A liquid level sensor is installed inside the sludge conditioning tank (2). The liquid level sensor is electrically connected to a control module. The control module is used to control the rotation of the driver (5). The control module adjusts the speed and start / stop of the driver (5) in real time based on the data detected by the liquid level sensor.

9. The sludge treatment agent quantitative dosing device according to claim 7, characterized in that: A fixed chuck (20) is fitted on the spiral piston rod (16). The fixed chuck (20) is fixed to the middle of the feed tube (15) by multiple fixed rods. The spiral piston rod (16) rotates in both directions simultaneously as it rises and falls.

10. A method of using a sludge treatment agent quantitative dosing device, specifically applied to the sludge treatment agent quantitative dosing device according to any one of claims 1-9, characterized in that, Includes the following steps: S1. The sludge to be treated is transported to the sludge conditioning tank (2), and sludge conditioning agent is added to condition the sludge; S2. The liquid level in the sludge conditioning tank (2) is monitored in real time by a liquid level sensor, and the monitoring data is transmitted to the control module. S3. Control the rotation power of the drive (5) according to the liquid level in the sludge conditioning tank (2) and discharge the sludge treatment agent in the feeding bin (1) into the sludge conditioning tank (2). S4. Introduce dry airflow into the air passage (9); S5. Pass the treated sludge into the plate dewatering machine, close the plate and start the hydraulic system to gradually increase the pressure to 1 MPa. The sludge forms a filter cake between the filter cloths. Maintain the pressure for at least 1 hour, loosen the plate, remove the filter cake on the plate, and the sludge treatment is complete.

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