Wet desulphurization wastewater purification device

Abstract

The utility model discloses a wet desulphurization wastewater purification device, which relates to the technical field of wastewater purification and comprises a purification box, a fixed cylinder, a movable filter cylinder, a lifting mechanism, a baffle discharge unit and a stirring component, a sewage outlet is formed in the center of the bottom of the purification box, and the fixed cylinder is fixed in the center of the inner top of the purification box. An opening is formed in the lower part of the fixed cylinder, and the movable filter cylinder movably sleeves the outer ring of the fixed cylinder and is attached to the fixed cylinder. According to the utility model, dual functions of wastewater purification and precipitation and supernate discharge are realized: when wastewater is subjected to purification and precipitation, the movable filter drum is positioned at the topmost position, and the fixed drum shields the filter holes of the upper filter part, so that the wastewater is prevented from flowing out through the filter holes; when supernatant liquid needs to be discharged, the movable filter cylinder moves downwards, the fixed cylinder does not block the filter holes of the upper filter part any more, the supernatant liquid flows out from the side face through the filter holes, the filter holes are formed in the peripheral side of the filter cylinder, and the design effectively accelerates the water discharge rate and improves the purification efficiency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to wastewater purification technical field, concretely relates to a wet flue gas desulfurization wastewater purification device. BACKGROUND

[0002] Wet flue gas desulfurization is a kind of flue gas desulfurization technology widely used in coal-fired power plant, steel plant and other industrial fields.The technology is by the reaction of sulfur dioxide in flue gas and liquid absorbent such as limestone slurry, generates calcium sulfate and other byproducts, to realize the purification of flue gas.Wet flue gas desulfurization technology has the advantages of high desulfurization efficiency, strong adaptability, mature technology, but its wastewater treatment problem is also increasingly concerned.Wet flue gas desulfurization wastewater has the following main characteristics: high salinity, high hardness, high suspended solids, high COD, heavy metals.If wet flue gas desulfurization wastewater is not treated and directly discharged, it will cause serious pollution to the environment, mainly manifested as: water pollution, soil pollution and ecological damage.

[0003] The existing wet flue gas desulfurization wastewater treatment process includes pretreatment, neutralization, heavy metal removal, flocculation precipitation, advanced treatment, disinfection and discharge or reuse, realizes wastewater discharge and resource utilization.In the treatment of wastewater, generally, alkaline solvent, heavy metal precipitant are added in sulfur-containing wastewater to adjust the pH value and heavy metal ions of wastewater, after the first two steps of chemical precipitation reaction, a certain proportion of flocculating agent is added, the small flocculating material slowly becomes larger and more easily deposited flocculating material, and the suspended solids in desulfurization wastewater also settle down.In the settling process, to ensure that the flocculating material is not discharged with the treated wastewater, a filter screen is added to intercept the flocculating material, and the filter screen in the existing wastewater treatment device is mostly fixedly arranged in the box body.When a large amount of flocculating material is accumulated on the filter screen, the filter screen is blocked to a certain extent, so that the drainage is not smooth and the speed is slow, and the bottom sediment is also difficult to discharge and treat, thereby causing the drainage and pollution discharge work to be more complicated, and reducing the wastewater treatment efficiency. UTILITY MODEL CONTENT

[0004] In view of the problems existing in the prior art, the utility model provides a wet flue gas desulfurization wastewater purification device, which realizes efficient solid-liquid separation, automatic discharge, stable operation control, stirring function and convenient maintenance through innovative design and optimization.

[0005] The utility model discloses a technical scheme that solves the technical problems is: a kind of wet desulphurization wastewater purification device, including purification tank, fixed cylinder and movable filter cartridge, a blowdown opening is opened in the bottom center of purification tank, further including lifting mechanism, baffle discharge unit and stirring assembly, the fixed cylinder is fixed in the inner top center position of purification tank, and the lower opening of fixed cylinder, the movable filter cartridge is movably sleeved in the outer ring of fixed cylinder and is attached with fixed cylinder, the movable filter cartridge is formed by the upper filter part and lower seal part of being arranged above and below, and the upper filter part uniformly distributes filter hole, the upper end of movable filter cartridge is open, and the lower end is blocked by baffle discharge unit, and movable filter cartridge moves up and down on the outside of fixed cylinder by lifting mechanism control;

[0006] The baffle discharge unit includes a rotating shaft that is transversely and rotatably mounted on the movable filter cartridge, a circular baffle is fixed on the rotating shaft and attached with the inner diameter of the movable filter cartridge, the circular baffle is used to block the lower outlet of the movable filter cartridge, a from gear is fixedly mounted on one end of the rotating shaft, a rotating motor is mounted on the outside of the purification tank, and a main gear that can engage with the from gear is fixedly mounted on the output end of the rotating motor.

[0007] Further, the lifting mechanism includes a screw rod that is longitudinally and rotatably mounted between the purification tank and the movable filter cartridge, a lifting motor is mounted on the top of the purification tank, the output end of the lifting motor is connected with the screw rod, a nut is threadedly mounted on the screw rod, the nut is fixedly connected with the outer wall of the movable filter cartridge, a sliding rod is longitudinally fixed between the purification tank and the movable filter cartridge, a sliding sleeve is slidably mounted on the sliding rod, and the sliding sleeve is fixedly connected with the movable filter cartridge.

[0008] Further, the stirring assembly is arranged in the fixed cylinder, the stirring assembly includes a stirring motor that is mounted on the top center position of the purification tank, a stirring paddle is fixedly connected with the lower end of the stirring motor, and the stirring paddle is located in the interior of the fixed cylinder.

[0009] Further, longitudinal rectangular guide grooves are symmetrically arranged on both sides of the inner wall of the purification tank, the lower end of the rectangular guide groove is open, rectangular guide blocks are arranged on both ends of the rotating shaft, the rectangular guide blocks are slidably mounted in the rectangular guide grooves, and the length of the rectangular guide groove is less than the moving path of the movable filter cartridge.

[0010] Further, a purification agent inlet is arranged on the top of the purification tank, a drain pipe is connected with the position close to the bottom of the side surface of the purification tank, and a valve is mounted on the drain pipe.

[0011] Further, a layer of sealing gasket is arranged on the outer wall of the lower end of the movable filter cartridge.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The utility model discloses a movable filter cartridge, fixed cylinder, lifting mechanism and baffle material discharging unit are set up, movable filter cartridge is controlled on the outside of fixed cylinder up and down movement through lifting mechanism, realized the double function of wastewater purification and supernatant discharge: when needing to carry out purification and sedimentation to wastewater, movable filter cartridge is at the most top position, and fixed cylinder blocks the filter hole of upper filter part, prevents wastewater from flowing out through the filter hole, ensures that wastewater is fully precipitated in fixed cylinder, when wastewater is precipitated and needs to discharge upper clear liquid, movable filter cartridge moves down, and fixed cylinder no longer blocks the filter hole of upper filter part, and the supernatant flows out from the side through the filter hole, and the precipitate remains in the bottom of movable filter cartridge, and the filter hole is arranged at the lateral side of filter cartridge, and this design effectively speeds up the water discharge rate, improves the purification efficiency, and baffle material discharging unit rotates through the rotation motor drive pivot, realizes the opening and closing of circular baffle, and further realizes the function of intercepting wastewater or automatic material discharge, and this design not only improves the material discharge efficiency, but also reduces manual operation, reduces the labor intensity. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the whole structure schematic diagram of the utility model;

[0015] Figure 2 It is the internal structure schematic diagram of the utility model's purification tank;

[0016] Figure 3 It is the one of the three -dimensional section structure schematic diagram of the utility model;

[0017] Figure 4 It is the two of the three -dimensional section structure schematic diagram of the utility model;

[0018] Figure 5 It is the front view section structure schematic diagram of the utility model;

[0019] Figure 6 It is the fixed cylinder and movable filter cartridge structure schematic diagram of the utility model.

[0020] In the drawing: 1, purification tank;2, fixed cylinder;3, movable filter cartridge;31, upper filter part;32, lower seal part;4, stirring assembly;41, stirring motor;42, stirring paddle;5, lifting mechanism;51, lifting motor;52, screw;53, nut;54, slide rod;55, slide sleeve;6, baffle material discharging unit;61, pivot;62, circular baffle;63, rectangular guide block;64, rectangular guide groove;65, from gear;66, rotation motor;67, main gear;7, water inlet pipe;8, purification agent inlet;9, support;10, drain pipe. DETAILED DESCRIPTION

[0021] The utility model is further explained below in connection with the drawings and examples.

[0022] Please refer to Figures 1-6The utility model provides a kind of wet desulphurization wastewater purification device technical scheme: Embodiments

[0023] According to Figure 1 And Figure 2 As shown in a kind of wet desulphurization wastewater purification device, including purification tank 1, fixed cylinder 2 and movable filter cylinder 3, purification tank 1 is supported by support 9 and is placed, the bottom center of purification tank 1 is equipped with a blowdown, fixed cylinder 2 is fixed in the inner top center position of purification tank 1, and with blowdown upper and lower correspondence, be provided with water inlet pipe 7 on purification tank 1, desulfurization wastewater is entered fixed cylinder 2 by water inlet pipe 7, movable filter cylinder 3 is movably sleeved in the outer ring of fixed cylinder 2 and is attached to fixed cylinder 2, and movable filter cylinder 3 is controlled on the outside of fixed cylinder 2 and moves up and down by lifting mechanism 5, the specific structure of fixed cylinder 2 and movable filter cylinder 3 as shown in Figure 6 The lower end of fixed cylinder 2 is open, and the upper end is fixed to the top of purification tank 1, movable filter cylinder 3 is composed of upper filter part 31 and lower sealing part 32 arranged upwards and downwards, part of upper filter part 31 is evenly distributed with filter hole, and the upper end of movable filter cylinder 3 is open, and the lower end is blocked by baffle discharge unit 6. There are two position states in the process of movable filter cylinder 3 working: when needing to purify and deposit waste water, movable filter cylinder 3 is in the topmost position, fixed cylinder 2 and upper filter part 31 partially overlap, the filter hole of upper filter part 31 can be shielded and blocked by the shielding of fixed cylinder 2, to prevent waste water from flowing out of filter cylinder through filter hole, at this time, waste water is completely in fixed cylinder 2 for purification and deposition work;When waste water is deposited and needs to discharge supernatant, movable filter cylinder 3 is in the bottom position, fixed cylinder 2 no longer blocks the filter hole of upper filter part 31, at this time, supernatant after deposition in filter cylinder flows out from side through filter hole, and sediment remains at the bottom of movable filter cylinder 3. By setting filter hole on the lateral side of filter cylinder, compared with setting filter screen at the bottom of filter cylinder, water does not need to pass through sediment when discharging, which is more convenient for supernatant discharge, can effectively accelerate the discharge rate of water.

[0024] The baffle plate of the bottom of the movable filter cartridge 3 is arranged in the form of a circular baffle plate 62, which is fixed on the rotating shaft 61 and is in contact with the inner wall of the movable filter cartridge 3. The outer edge of the circular baffle plate 62 is wrapped with a sealing ring, which can completely block the lower outlet of the movable filter cartridge 3 when the circular baffle plate 62 is in a horizontal state. When the circular baffle plate 62 rotates, the opening below the movable filter cartridge 3 is opened, and the bottom mud can fall, and the circular baffle plate 62 also plays a role in guiding the mud. A from gear 65 is fixed on one end of the rotating shaft 61, and a rotating motor 66 is installed on the outside of the purification tank 1. The output end of the rotating motor 66 is fixedly sleeved with a main gear 67, which is located in the purification tank 1 and can engage with the from gear 65. When the movable filter cartridge 3 moves to the bottom discharging position, the from gear 65 is engaged with the main gear 67. At this time, the rotating motor 66 drives the main gear 67 to rotate, and under the meshing force of the main gear 67 and the from gear 65, the rotating shaft 61 and the circular baffle plate 62 are driven to rotate, realizing discharging.

[0025] In order to ensure that the circular baffle plate 62 is completely in a horizontal state when the movable filter cartridge 3 moves to the upper position, and the from gear 65 can smoothly engage with the main gear 67 when the movable filter cartridge 3 moves to the lower position, longitudinal rectangular guide grooves 64 are symmetrically arranged on the inner wall of the purification tank 1, and the lower end of the rectangular guide groove 64 is open. Rectangular guide blocks 63 are arranged on both ends of the rotating shaft 61, and the rectangular guide blocks 63 can be slidably sleeved in the rectangular guide grooves 64, and the length of the rectangular guide groove 64 is slightly smaller than the up-down moving path of the movable filter cartridge 3. When the movable filter cartridge 3 moves upwards, the rectangular guide blocks 63 slide in the rectangular guide grooves 64. Through the limiting cooperation of the rectangular guide blocks 63 and the rectangular guide grooves 64, it is ensured that the circular baffle plate 62 is in a horizontal state, and the angle of the from gear 65 is also limited. When the movable filter cartridge 3 moves downwards until the rectangular guide blocks 63 are separated from the rectangular guide grooves 64, the from gear 65 is also engaged with the main gear 67. At this time, the limiting effect of the rotating shaft 61 and the circular baffle plate 62 disappears, and the circular baffle plate 62 is driven to rotate by the rotating motor 66.

[0026] When the movable filter cartridge 3 moves downwards to the lower position, the lower end of the movable filter cartridge 3 is inserted into the sewage outlet of the purification tank 1, and a sealing pad is arranged on the outer wall of the lower end of the movable filter cartridge 3 to realize the sealing of the movable filter cartridge 3 and the sewage outlet. Only when the lower end of the movable filter cartridge 3 is inserted into a part of the sewage outlet, the filter holes on the movable filter cartridge 3 are exposed. By establishing an isolation channel in the purification tank 1, water can only flow out from the side and accumulate in the purification tank 1, while the sediment can only be discharged from the lower part of the movable filter cartridge 3 and cannot enter the purification tank 1, thereby realizing solid-liquid separation.

[0027] The lifting mechanism 5 comprises a screw rod 52 longitudinally sleeved between the purification box 1 and the movable filter cylinder 3, a lifting motor 51 is installed on the top of the purification box 1, the output end of the lifting motor 51 is connected with the screw rod 52 for driving the screw rod 52 to rotate, a screw nut 53 is threadedly sleeved on the screw rod 52 and is fixedly connected with the outer wall of the movable filter cylinder 3, a sliding rod 54 is longitudinally fixed between the purification box 1 and the movable filter cylinder 3, a sliding sleeve 55 is slidably sleeved on the sliding rod 54 and is fixedly connected with the movable filter cylinder 3. When it is needed to control the movable filter cylinder 3 to move up and down to change the working state, the lifting motor 51 is driven to control the screw rod 52 to rotate, under the thread cooperation effect of the screw rod 52 and the screw nut 53, the movable filter cylinder 3 is driven to move, and under the guiding effect of the sliding rod 54 and the sliding sleeve 55, the movable filter cylinder 3 can stably move up and down, the position of the movable filter cylinder 3 is changed, and then the working state of the movable filter cylinder 3 is changed.

[0028] A purification agent inlet 8 is arranged on the top of the purification box 1, the alkaline solvent or the flocculating agent and other purification agents can be put into the fixed cylinder 2 through the purification agent inlet 8 to react with the waste water for purification, a drain pipe 10 is connected to the side of the purification box 1 close to the bottom, the valve is installed on the drain pipe 10, and the water filtered through purification is discharged to the outside through the drain pipe 10.

[0029] In specific use, the wet desulfurization waste water purification device is used, first, the movable filter cylinder 3 is driven by the lifting mechanism 5 to move to the upper position, the circular baffle 62 is tightly attached to the lower end opening of the fixed cylinder 2 to block the opening, then the desulfurization waste water is introduced into the fixed cylinder 2 through the water inlet pipe 7, the alkaline solvent, the flocculating agent and other purification agents are sequentially put into the fixed cylinder 2, the water is purified and precipitated through the reaction of the purification agents, after the precipitation is completed, the precipitate falls to the bottom of the filter cylinder, and the supernatant is above the precipitate, then the drainage work is started, the lifting motor 51 is driven to control the screw rod 52 to rotate, under the thread cooperation effect of the screw rod 52 and the screw nut 53, the movable filter cylinder 3 is driven to move downwards, the filter holes on the upper filter part 31 are gradually exposed in the process that the movable filter cylinder 3 moves downwards, the supernatant flows to the purification box 1 through the side filter holes to realize rapid drainage, when the supernatant is discharged, the movable filter cylinder 3 continues to move downwards by a distance, the rectangular guide block 63 is separated from the rectangular guide groove 64, the limiting on the rotating shaft 61 is released, at this time, the pinion 65 is engaged with the main gear 67, at this time, the rotating motor 66 drives the main gear 67 to rotate, under the meshing force of the main gear 67 and the pinion 65, the rotating shaft 61 and the circular baffle 62 are driven to rotate, the movable filter cylinder 3 is opened through the circular baffle 62, the precipitate falls, and the circular baffle 62 simultaneously plays a guiding role to realize rapid discharge. Embodiment

[0030] On the basis of embodiment one, the same as embodiment one will not be described, the different is as follows: as Figure 2 and Figure 3 As shown in the fixed cylinder 2 is provided with stirring assembly 4, stirring assembly 4 includes the stirring motor 41 installed in the center position of the purification tank 1 top, the lower end of stirring motor 41 is fixedly connected with stirring paddle 42, stirring paddle 42 is located inside the fixed cylinder 2.

[0031] Specific use, the utility model discloses a kind of wet desulphurization wastewater purification devices, when the pH value of adjusting wastewater or adding flocculating agent, all can be driven stirring paddle 42 rotation by starting stirring motor 41, by stirring paddle 42 to wastewater and added purifying agent are stirred, make wastewater and additive fully mixed evenly, improve the reaction speed of wastewater.

[0032] The above is only the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A wet desulfurization wastewater purification device, comprising a purification tank (1), a fixed cylinder (2) and a movable filter cylinder (3), a blowdown port is formed in the center of the bottom of the purification tank (1), characterized in that: It also includes lifting mechanism (5), baffle discharge unit (6) and stirring assembly (4), the fixed cylinder (2) is fixed in the inner top center position of the purification tank (1), and the lower opening of the fixed cylinder (2), the movable filter cylinder (3) is movably sleeved on the outer circle of the fixed cylinder (2) and is attached to the fixed cylinder (2), the movable filter cylinder (3) is composed of the upper filter part (31) and the lower sealing part (32) arranged above and below, the upper filter part (31) is uniformly distributed with filter holes, the upper end of the movable filter cylinder (3) is open, the lower end is blocked by the baffle discharge unit (6), and the movable filter cylinder (3) moves up and down outside the fixed cylinder (2) through the lifting mechanism (5); The baffle discharge unit (6) includes a rotating shaft (61) which is transversely rotatably sleeved on the movable filter cylinder (3), the rotating shaft (61) is fixed with a circular baffle (62) which is attached to the inner diameter of the movable filter cylinder (3), the circular baffle (62) is used for blocking the lower outlet of the movable filter cylinder (3), one end of the rotating shaft (61) is fixedly sleeved with a from gear (65), a rotating motor (66) is installed on the outside of the purification tank (1), and the output end of the rotating motor (66) is fixedly sleeved with a main gear (67) which can engage with the from gear (65).

2. A wet desulphurization wastewater purification device according to claim 1, characterized in that: The lifting mechanism (5) includes a screw rod (52) which is longitudinally rotatably sleeved between the purification tank (1) and the movable filter cylinder (3), a lifting motor (51) is installed on the top of the purification tank (1), the output end of the lifting motor (51) is connected with the screw rod (52), a nut (53) is threadedly sleeved on the screw rod (52), the nut (53) is fixedly connected with the outer wall of the movable filter cylinder (3), a sliding rod (54) is longitudinally fixed between the purification tank (1) and the movable filter cylinder (3), a sliding sleeve (55) is slidably sleeved on the sliding rod (54), and the sliding sleeve (55) is fixedly connected with the movable filter cylinder (3).

3. A wet desulphurization wastewater purification device according to claim 1, characterized in that: The stirring assembly (4) is arranged in the fixed cylinder (2), the stirring assembly (4) includes a stirring motor (41) installed on the top center position of the purification tank (1), a stirring paddle (42) is fixedly connected to the lower end of the stirring motor (41), and the stirring paddle (42) is located in the interior of the fixed cylinder (2).

4. A wet desulphurization wastewater purification device according to claim 1, characterized in that: The inner wall of the purification tank (1) is symmetrically provided with longitudinal rectangular guide grooves (64) on both sides, the lower end of the rectangular guide groove (64) is open, rectangular guide blocks (63) are arranged at both ends of the rotating shaft (61), the rectangular guide blocks (63) are slidably sleeved in the rectangular guide grooves (64), and the length of the rectangular guide grooves (64) is less than the movement path of the movable filter cylinder (3).

5. A wet desulphurization wastewater purification device according to claim 1, characterized in that: The top of the purification tank (1) is provided with a purification agent inlet (8) and a water inlet pipe (7), and the side of the purification tank (1) is connected with a drain pipe (10) near the bottom, and the drain pipe (10) is provided with a valve.

6. A wet desulphurization wastewater purification device according to claim 1, characterized in that: A layer of sealing gasket is arranged on the outer wall of the lower end of the movable filter cylinder (3).

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