A desulfurized wastewater discharge system

Abstract

The present invention relates to the technical field of desulfurization, in particular to a desulfurization wastewater discharge system, which includes a desulfurization device for desulfurizing target impurities to obtain desulfurization wastewater; at least one spraying device for spraying the desulfurization wastewater in a corresponding target area, wherein each target area is provided with a corresponding spraying device. The beneficial effects of the present invention are not only to solve the problem of desulfurization wastewater discharge, greatly reducing the risk of environmental protection incidents, but also to prevent the problems of low desulfurization efficiency, large consumption of plant electricity and limestone powder caused by non-discharge of desulfurization wastewater, and in severe cases, it may cause serious environmental protection incidents leading to shutdown. Further, it meets the environmental protection emission requirements of the unit and protects the surrounding environment.

Description

Technical Field

[0001] The present invention relates to the technical field of desulfurization, and particularly to a desulfurized wastewater discharge system. Background Art

[0002] The existing desulfurized wastewater discharge system cannot meet the zero - discharge requirement and may trigger environmental protection incidents at any time. At the same time, not discharging desulfurized wastewater will threaten the safe operation of the unit's desulfurization system, resulting in low desulfurization efficiency, increased power consumption and limestone powder consumption, and may even lead to serious environmental protection incidents and cause shutdowns.

[0003] In addition, during the operation of the desulfurization absorption tower, the deposition of particles in the slurry will block pipelines, flanges and accessories, affect energy transmission and conversion, increase the resistance and pressure drop of the absorption tower, and reduce the desulfurization efficiency. Particle deposition may also cause equipment corrosion and wear, affecting the durability and lifespan of the equipment. To prevent particle deposition, a stirring device needs to be installed on the side of the desulfurization absorption tower, and multiple bearings need to be installed on the stirring shaft. To ensure the normal operation of the bearings, it is necessary to be able to lubricate the bearings quickly and conveniently to ensure the stable operation of the stirring shaft. Summary of the Invention

[0004] In view of the above - mentioned or existing problems, the present invention is proposed.

[0005] To solve the above - mentioned technical problems, the present invention provides the following technical solution: A desulfurized wastewater discharge system, which includes a desulfurization device for desulfurizing target impurities to obtain desulfurized wastewater;

[0006] At least one spraying device for spraying the desulfurized wastewater in a corresponding target area, wherein one corresponding spraying device is set for each target area.

[0007] As a preferred scheme of the desulfurized wastewater discharge system of the present invention, the system further includes:

[0008] A conveying device, one end of the conveying device is connected to the desulfurization device, and a flow - dividing device connected to each spraying device is arranged at the other end of the conveying device, and the flow - dividing device is used to convey the desulfurized wastewater to the corresponding spraying device.

[0009] As a preferred scheme of the desulfurized wastewater discharge system of the present invention, the target areas include a slag yard, an ash yard and a fuel coal yard;

[0010] The conveying device further includes a main conveying pipe. The shunt device includes a first shunt channel corresponding to the slag storage bin, a second shunt channel corresponding to the ash storage bin, and a third shunt channel corresponding to the fuel coal yard. Among them, the input end of the main conveying pipe is connected to the discharge end of the desulfurization device, and the output end of the main conveying pipe is connected to the first shunt channel, the second shunt channel, and the third shunt channel. The first shunt channel is connected to the spraying device corresponding to the slag storage bin, the second shunt channel is connected to the spraying device corresponding to the ash storage bin, and the third shunt channel is connected to the spraying device corresponding to the fuel coal yard.

[0011] As a preferred embodiment of the desulfurization wastewater discharge system of the present invention, the system further includes a purging device for purging the conveying device.

[0012] As a preferred embodiment of the desulfurization wastewater discharge system of the present invention, the desulfurization device includes a main body unit, which includes a desulfurization tower and a stirring assembly fixed on the side of the desulfurization tower.

[0013] An oil injection unit, which includes a protection box, an oil storage assembly arranged on the protection box, an extrusion assembly for driving the oil storage assembly to discharge oil, and a locking assembly for locking the extrusion assembly.

[0014] As a preferred embodiment of the desulfurization wastewater discharge system of the present invention, the stirring assembly includes a motor, a stirring shaft connected to the motor, stirring blades fixedly connected to one end of the stirring shaft, a sealing box connected to the stirring shaft, and a bearing box arranged on the stirring shaft.

[0015] As a preferred embodiment of the desulfurization wastewater discharge system of the present invention, the locking assembly includes a mounting ring fixedly connected to the inner wall of the protection box, a first fixed pipe and a second fixed pipe arranged inside the mounting ring, a rotating ring located between the first fixed pipe and the second fixed pipe, a slotted opening arranged on the first fixed pipe and the rotating ring, a lifting rod vertically moving along the first fixed pipe, a locking column arranged on the lifting rod, a limiting plate fixedly connected to one end of the lifting rod, a pressing rod fixedly connected to the other end of the lifting rod, a pressing block fixedly connected to the lower end of the pressing rod, a first spring connecting the lifting rod and the inner wall of the second fixed pipe, two driven parts symmetrically arranged on the rotating ring, and a limiting part for blocking the driven parts.

[0016] The stirring shaft passes through the mounting ring, the locking column moves along the slotted opening, and the first spring is wound around the pressing rod.

[0017] As a preferred embodiment of the desulfurization wastewater discharge system of the present invention, the driven part includes a pushing block horizontally moving along the rotating ring, a push rod fixedly connected to the pushing block, and a second spring connecting the pushing block and the rotating ring.

[0018] The limiting member includes a fixing plate with both ends fixedly connected to the inner wall of the mounting ring, a third spring with one end fixedly connected to the fixing plate, and a U-shaped lifting plate fixedly connected to the other end of the third spring. Two openings are provided on the lifting plate.

[0019] As a preferred embodiment of the desulfurized wastewater discharge system of the present invention, there are two sets of oil storage assemblies.

[0020] The oil storage assembly includes a mounting box fixedly connected to the outer wall of the mounting ring, an oil storage tank passing through both the protection box and the mounting box, an oil storage bladder communicated with the oil storage tank, an oil outlet pipe communicated with the oil storage bladder, a U-shaped moving plate driven by a push rod, two first inclined blocks and two connecting plates fixedly connected to the side walls of the U-shaped moving plate, a fourth spring connecting the connecting plate and the inner wall of the mounting box, and two moving members driven by the two first inclined blocks.

[0021] The moving member includes a fifth spring with one end fixedly connected to the inner wall of the mounting box, a fixed vertical plate fixedly connected to the other end of the fifth spring, a moving rod passing through the fixed vertical plate, and a second inclined block fixedly connected to one end of the moving rod.

[0022] As a preferred embodiment of the desulfurized wastewater discharge system of the present invention, there are two sets of extrusion assemblies.

[0023] The extrusion assembly includes an extrusion rod passing through the mounting ring, a mounting frame fixedly connected to the two mounting boxes, a sleeve plate fixedly sleeved on the extrusion rod, a sixth spring connecting the sleeve plate and the mounting frame, and a third inclined block fixedly connected to the lower end of the extrusion rod.

[0024] The beneficial effects of the present invention are as follows: It not only solves the problem of desulfurized wastewater discharge and greatly reduces the risk of environmental protection incidents, but also eliminates the problems of low desulfurization efficiency, large consumption of plant electricity and limestone powder caused by non-discharge of desulfurized wastewater, and may cause serious environmental protection incidents leading to shutdown in severe cases. Further, it meets the environmental protection emission requirements of the unit, protects the surrounding environment. On the other hand, the locking assembly is used to lock the two extrusion assemblies, reducing the possibility of over-injection of oil caused by accidental contact with the extrusion assembly. Further, when the locking of the extrusion assembly is released, according to actual needs, the two extrusion rods can be pressed separately or simultaneously to achieve the function of injecting oil into the sealing box and the bearing box sequentially or simultaneously. The oil injection method is flexible, improving the practicability of the present invention, and further ensuring the stable operation of the stirring shaft. Description of the Drawings

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them:

[0026] Figure 1 It is a schematic flow diagram of the desulfurized wastewater discharge system.

[0027] Figure 2 It is a schematic diagram of the overall structure of the desulfurization device.

[0028] Figure 3 It is a schematic diagram of a partial structure Figure 1 .

[0029] Figure 4 It is a schematic diagram of a partial structure Figure 2 .

[0030] Figure 5 It is a schematic diagram of the internal structure of the installation box. Specific embodiments

[0031] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific embodiments of the present invention in conjunction with the drawings in the specification.

[0032] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0033] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present invention. The "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that excludes other embodiments.

[0034] Embodiment 1

[0035] Referring to Figure 1 , which is the first embodiment of the present invention. This embodiment provides a desulfurized wastewater discharge system, which includes a desulfurization device. The desulfurization device is used to perform desulfurization treatment on target impurities to obtain desulfurized wastewater. Among them, the desulfurization treatment uses wet desulfurization, and desulfurized wastewater is generated after desulfurization by the desulfurization device;

[0036] At least one spraying device, which is used to spray desulfurized wastewater on the corresponding target area. Each target area is provided with a corresponding spraying device, and the spraying device can adopt a spraying fog gun.

[0037] Furthermore, the system further includes:

[0038] A conveying device, one end of the conveying device is connected to the desulfurization device, and the other end of the conveying device is provided with a flow splitting device connected to each spraying device. The flow splitting device is used to convey the desulfurized wastewater to the corresponding spraying device. The conveying device can be a conveying pipeline.

[0039] Furthermore, the target areas include a slag yard, an ash yard, and a fuel coal yard;

[0040] The conveying device further includes a main conveying pipe. The flow splitting device includes a first flow splitting channel corresponding to the slag yard, a second flow splitting channel corresponding to the ash yard, and a third flow splitting channel corresponding to the fuel coal yard. The input end of the main conveying pipe is connected to the discharge end of the desulfurization device, and the output end of the main conveying pipe is connected to the first flow splitting channel, the second flow splitting channel, and the third flow splitting channel. The first flow splitting channel is connected to the spraying device corresponding to the slag yard, the second flow splitting channel is connected to the spraying device corresponding to the ash yard, and the third flow splitting channel is connected to the spraying device corresponding to the fuel coal yard. There is an electric stop valve at the pipeline inlet of the main conveying pipe.

[0041] It should be noted that the spraying device applied to the third flow splitting channel is used to spray the coal piles in the fuel coal yard. The wastewater generated after desulfurization is split by the conveying device to the ash yard, the slag yard, and the fuel coal yard. The treatment of the wastewater is achieved by dust reduction in the ash yard and the slag yard and spraying on the coal piles. During the use of the sprayed coal piles, the components in the wastewater are continuously recycled.

[0042] Furthermore, the system further includes a purging device, which is used to purge the conveying device.

[0043] It should be noted that the purging device is a compressed air purging pipeline. One end of the compressed air purging pipeline is connected to the main conveying pipe. The air source of the compressed air is led out from the outlet pipeline of the desulfurization compressed air storage tank. There is a stop valve on the pipeline from the compressed air storage tank to the wastewater discharge pipeline. The purging device is used to solve the problem of freezing of the conveying pipe in winter.

[0044] In summary, the beneficial effects of the desulfurized wastewater discharge system of the present invention are as follows: it not only solves the problem of desulfurized wastewater discharge, greatly reduces the risk of environmental protection incidents, but also eliminates the problems of low desulfurization efficiency, high power consumption of plant electricity and large consumption of limestone powder caused by non-discharge of desulfurized wastewater. In severe cases, it may cause serious environmental protection incidents leading to shutdown. Furthermore, it meets the environmental protection discharge requirements of the unit and protects the surrounding environment.

[0045] Embodiment 2

[0046] Referring to Figures 2 to 5 , which is the second embodiment of the present invention. This embodiment provides the specific structure of the desulfurization device, and the rest is the same as that of Embodiment 1; it can inject oil into the bearings of the sealing box 102d and the bearing box 102e through the extrusion assembly 203, ensuring the stable operation of the stirring shaft 102b.

[0047] Specifically, the desulfurization device includes a main body unit 100, which includes a desulfurization tower 101 and a stirring assembly 102 fixed to the side of the desulfurization tower 101;

[0048] an oil injection unit 200, which includes a protection box 201, an oil storage assembly 202 arranged on the protection box 201, an extrusion assembly 203 for driving the oil storage assembly 202 to discharge oil, and a locking assembly 204 for locking the extrusion assembly 203. Among them, the protection box 201 is used to fix the stirring assembly 102 to the side of the desulfurization tower 101;

[0049] Furthermore, the stirring assembly 102 includes a motor 102a, a stirring shaft 102b connected to the motor 102a, a stirring blade 102c fixedly connected to one end of the stirring shaft 102b, a sealing box 102d connected to the stirring shaft 102b, and a bearing box 102e arranged on the stirring shaft 102b. Among them, there are multiple bearings on the stirring shaft 102b. After the locking assembly 204 releases the limit on the extrusion assembly 203, the lubricating oil is injected into the sealing box 102d and the bearing box 102e by driving the extrusion assembly 203 to extrude the oil storage assembly 202.

[0050] It should be noted that when the motor 102a is started to drive the stirring shaft 102b to rotate, the slurry in the desulfurization tower 101 is stirred by the stirring blade 102c to prevent the deposition of slurry particles. The sealing box 102d is fixedly connected to the position where the stirring shaft 102b is connected to the desulfurization tower 101. There is a bearing inside the sealing box 102d. The bearing box 102e is fixedly connected to the stirring shaft 102b, and the bearing box 102e is located inside the protection box 201. The motor 102a is fixedly connected to one side of the protection box 201, and one end of the stirring shaft 102b is fixedly connected to the motor 102a through a bearing.

[0051] Further, the locking component 204 includes a mounting ring 204a fixedly connected to the inner wall of the protection box 201, a first fixed tube 204b and a second fixed tube 204c arranged inside the mounting ring 204a, a rotating ring 204d located between the first fixed tube 204b and the second fixed tube 204c, slots 204e arranged on the first fixed tube 204b and the rotating ring 204d, a lifting rod 204f vertically moving along the first fixed tube 204b, a locking post 204g arranged on the lifting rod 204f, a limiting plate 204h fixedly connected to one end of the lifting rod 204f, a pressing rod 204i fixedly connected to the other end of the lifting rod 204f, a pressing block 204j fixedly connected to the lower end of the pressing rod 204i, a first spring 204k connecting the lifting rod 204f and the inner wall of the second fixed tube 204c, two driven members 204l symmetrically arranged on the rotating ring 204d, and a limiting member 204m for shielding the driven members 204l. Among them, the inside of the mounting ring 204a is a hollow structure, and at the same time, two extrusion holes are symmetrically arranged on the mounting ring 204a. The rotating ring 204d rotates horizontally along the first fixed tube 204b and the second fixed tube 204c. A rubber material is arranged between the contact surfaces of the rotating ring 204d and the first fixed tube 204b and the second fixed tube 204c to increase the friction force among the three, that is, the rotating ring 204d only rotates under the driving force of an external force;

[0052] The stirring shaft 102b passes through the mounting ring 204a, the locking post 204g moves along the slot 204e, and the first spring 204k is wound around the pressing rod 204i. Among them, the cross-sectional dimension of the locking post 204g is adapted to the slot 204e.

[0053] It should be noted that when the lifting rod 204f is pressed, the lifting rod 204f first performs vertical lifting under the cooperation of the slot 204e and the locking post 204g. The locking post 204g enters the slot 204e on the rotating ring 204d from the first fixed column along the slot 204e. Rotating the limiting plate 204h drives the lifting column to rotate. The rotation of the lifting column drives the rotating ring 204d to perform planar rotation under the cooperation of the locking post 204g and the slot 204e, so that the driven member 204l is disengaged from the extrusion assembly 203.

[0054] Further, the driven member 204l includes a pushing block 204l-1 horizontally moving along the rotating ring 204d, a push rod 204l-2 fixedly connected to the pushing block 204l-1, and a second spring 204l-3 connecting the pushing block 204l-1 and the rotating ring 204d. Among them, the highest point of the pushing block 204l-1 is higher than the plane of the rotating ring 204d;

[0055] The limiting member 204m includes a fixing plate 204m-1 with both ends fixedly connected to the inner wall of the mounting ring 204a, a third spring 204m-2 with one end fixedly connected to the fixing plate 204m-1, and a U-shaped lifting plate 204m-3 fixedly connected to the other end of the third spring 204m-2. Among them, two openings are provided on the lifting plate, and the cross-sectional dimensions of the openings are adapted to the sizes of the push rod 204l-2 and the extrusion hole.

[0056] It should be noted that when the locking assembly 204 does not lock the extrusion assembly 203, the lifting rod 204f is at the highest point, the first spring 204k is not compressed, the locking post 204g is located at the slot 204e in the first fixed tube 204b, and the openings on the U-shaped lifting plate 204m-3 are aligned with the extrusion hole and the push rod 204l-2; when locking the extrusion assembly 203 is achieved, the lifting post moves vertically downward along the slot 204e, synchronously driving the downward pressure rod 204i to move vertically along the second fixed tube 204c. By pressing the U-shaped lifting plate 204m-3 through the downward pressure block 204j, the third spring 204m-2 is compressed, and the U-shaped lifting plate 204m-3 moves vertically along the mounting ring 204a, causing the openings to be misaligned with both the extrusion hole and the push rod 204l-2 simultaneously.

[0057] Furthermore, there are two sets of oil storage assemblies 202;

[0058] The oil storage assembly 202 includes a mounting box 202a fixedly connected to the outer wall of the mounting ring 204a, an oil storage tank 202b passing through both the protection box 201 and the protected mounting box 202a, an oil storage bladder 202c communicated with the oil storage tank 202b, an oil outlet pipe 202d communicated with the oil storage bladder 202c, a U-shaped moving plate 202e driven by the push rod 204l-2, two first inclined blocks 202f and two connecting plates 202g fixedly connected to the side walls of the U-shaped moving plate 202e, a fourth spring 202h connecting the connecting plate 202g and the inner wall of the mounting box 202a, and two moving members 202i driven by the two first inclined blocks 202f. Among them, the U-shaped moving plate 202e is arranged opposite to the extrusion hole, and the push rod 204l-2 pushes the U-shaped moving plate 202e through the extrusion hole. The two moving members 202i are symmetrically arranged with the center of the extrusion hole as the axis of symmetry. A one-way valve is provided at the connection between the oil outlet pipe 202d and the oil storage bladder 202c. The other ends of the two oil outlet pipes 202d are communicated with the sealing box 102d and the bearing box 102e to lubricate the bearings of both.

[0059] The moving member 202i includes a fifth spring 202i-1 with one end fixedly connected to the inner wall of the mounting box 202a, a fixed vertical plate 202i-2 fixedly connected to the other end of the fifth spring 202i-1, a moving rod 202i-3 passing through the fixed vertical plate 202i-2, and a second inclined block 202i-4 fixedly connected to one end of the moving rod 202i-3. Among them, the fixed vertical plate 202i-2 is fixedly connected to the U-shaped moving plate 202e, the fixed vertical plate 202i-2 is connected to the inner wall of the mounting box 202a through a telescopic rod (not shown in the drawing), and the fifth spring 202i-1 is wound around the telescopic rod.

[0060] It should be noted that the push rod 204l-2 passes through the extrusion hole to push the U-shaped moving plate 202e. The U-shaped moving plate 202e moves horizontally along the mounting box 202a, and the fifth spring 202i-1 is stretched. The first inclined block 202f moves horizontally to squeeze the second inclined block 202i-4, and the telescopic rod and the fifth spring 202i-1 are stretched. The two moving rods 202i-3 move to squeeze the oil storage bag 202c, and the bearing of the sealing box 102d and the bearing box 102e is lubricated through the oil outlet pipe 202d.

[0061] Furthermore, there are two sets of extrusion assemblies 203, where the two sets of extrusion assemblies 203 are correspondingly arranged for the two pushing blocks 204l-1.

[0062] The extrusion assembly 203 includes an extrusion rod 203a passing through the mounting ring 204a, a mounting frame 203b fixedly connected to the two mounting boxes 202a, a sleeve plate 203c fixedly sleeved on the extrusion rod 203a, a sixth spring 203d connecting the sleeve plate 203c and the mounting frame 203b, and a third inclined block 203e fixedly connected to the lower end of the extrusion rod 203a.

[0063] It should be noted that when the extrusion assembly 203 is not locked, the lowest point of the third inclined block 203e comes into contact with the pushing block 204l-1, and the contact point is higher than the plane where the rotating ring 204d is located. When lubrication is realized, by pressing the two extrusion rods 203a separately or simultaneously, the third inclined block 203e moves vertically to squeeze the pushing block 204l-1, driving the push rod 204l-2 to move horizontally along the extrusion hole, and driving the U-shaped moving plate 202e to move horizontally.

[0064] Preferably, the present invention realizes the locking of the two extrusion assemblies 203 through the locking assembly 204, reducing the possibility of over-lubrication caused by accidentally touching the extrusion assembly 203. Furthermore, when the locking of the extrusion assembly 203 is released, according to actual needs, the two extrusion rods 203a can be pressed separately or simultaneously to realize the function of lubricating the sealing box 102d and the bearing box 102e successively or simultaneously. The lubrication method is flexible, improving the practicability of the present invention.

[0065] In use, the present invention includes two usage states:

[0066] In the first usage state, the double locking of the two pressing components 203 is achieved through the locking component 204, reducing the possibility of over-oiling caused by accidental touching of the pressing components 203. Specifically, pressing the lifting rod 204f synchronously drives the limiting plate 204h and the pressing rod and the pressing block 204j to move vertically downward. The locking column 204g enters the slot 204e on the rotating ring 204d from the first fixed column along the slot 204e. Rotating the limiting plate 204h drives the lifting column to rotate. The rotation of the lifting column drives the rotating ring 204d to perform planar rotation under the cooperation of the locking column 204g and the slot 204e, causing the driven member 204l to disengage from the pressing component 203. The misalignment of the slot 204e prevents the first spring 204k from resetting. By contacting the limiting plate 204h with the two pressing rods 203a, the pressing of the two pressing rods 203a is limited. Further, during the process of the early lifting column moving vertically downward along the slot 204e, the pressing block 204j presses the U-shaped lifting plate 204m-3, and the third spring 204m-2 is compressed. The U-shaped lifting plate 204m-3 moves vertically along the mounting ring 204a, causing the opening to be misaligned with both the pressing hole and the push rod 204l-2 at the same time, preventing the structure inside the mounting ring 204a from entering the mounting box 202a through the pressing hole, achieving the double locking of the locking component 204 to the two pressing components 203, and reducing the possibility of over-oiling caused by accidental touching of the pressing components 203;

[0067] Second usage state: According to actual needs, press the two extrusion rods 203a separately or simultaneously to achieve the function of injecting oil into the sealing box 102d and the bearing box 102e sequentially or simultaneously. Specifically, rotate the lifting plate in the reverse direction so that the slot 204e on the rotating ring 204d and the slot 204e on the first fixed tube 204b are on the same axis. Under the reset action of the first spring 204k, the locking of the two extrusion assemblies 203 by the limiting plate 204h is released. At the same time, the rotating ring 204d resets so that the follower 204l contacts the extrusion assembly 203, and the U-shaped lifting plate 204m-3 resets so that the opening is aligned with the extrusion hole. At this time, according to actual needs, press the two extrusion rods 203a separately or simultaneously. The third inclined block 203e moves vertically to squeeze the push block 204l-1, driving the push rod 204l-2 to move horizontally along the extrusion hole, driving the U-shaped moving plate 202e to move horizontally. The U-shaped moving plate 202e moves horizontally along the mounting box 202a, and the fifth spring 202i-1 is stretched. By the horizontal movement of the first inclined block 202f to squeeze the second inclined block 202i-4, the telescopic rod and the fifth spring 202i-1 are stretched. Through the two moving rods 202i-3, the oil storage bladder 202c is squeezed, realizing the function of injecting oil into the bearing of the sealing box 102d and the bearing box 102e through the unlocked extrusion assembly 203, further ensuring the stable operation of the stirring shaft 102b.

[0068] In summary, the beneficial effect of the desulfurized wastewater discharge system of the present invention is that the locking of the two extrusion assemblies 203 is achieved through the locking component 204, reducing the possibility of over-injecting oil caused by accidentally touching the extrusion assembly 203. Further, when the locking of the extrusion assembly 203 is released, according to actual needs, the two extrusion rods 203a can be pressed separately or simultaneously to achieve the function of injecting oil into the sealing box 102d and the bearing box 102e sequentially or simultaneously. The oil injection method is flexible, improving the practicality of the present invention, and further ensuring the stable operation of the stirring shaft 102b.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A desulfurized wastewater discharge system, characterized in that: including, a desulfurization device for desulfurizing target impurities to obtain desulfurized wastewater; at least one spraying device for spraying the desulfurized wastewater on a corresponding target area, wherein each target area is provided with a corresponding spraying device; the desulfurization device includes a main body unit (100) which includes a desulfurization tower (101) and a stirring assembly (102) fixed to the side of the desulfurization tower (101); an oil injection unit (200) which includes a protection box (201), an oil storage assembly (202) arranged on the protection box (201), an extrusion assembly (203) for driving the oil storage assembly (202) to discharge oil, and a locking assembly (204) for locking the extrusion assembly (203); the locking assembly (204) includes a mounting ring (204a) fixedly connected to the inner wall of the protection box (201), a first fixed pipe (204b) and a second fixed pipe (204c) arranged inside the mounting ring (204a), a rotating ring (204d) located between the first fixed pipe (204b) and the second fixed pipe (204c), a slot (204e) arranged on the first fixed pipe (204b) and the rotating ring (204d), a lifting rod (204f) vertically moving along the first fixed pipe (204b), a locking column (204g) arranged on the lifting rod (204f), a limiting plate (204h) fixedly connected to one end of the lifting rod (204f), a pressing rod (204i) fixedly connected to the other end of the lifting rod (204f), a pressing block (204j) fixedly connected to the lower end of the pressing rod (204i), a first spring (204k) connecting the lifting rod (204f) and the inner wall of the second fixed pipe (204c), two driven parts (204l) symmetrically arranged on the rotating ring (204d), and a limiting part (204m) for blocking the driven parts (204l); the locking column (204g) moves along the slot (204e), and the first spring (204k) is wound around the pressing rod (204i).

2. The desulfurized wastewater discharge system according to claim 1, wherein: The system further includes: a conveying device, one end of the conveying device is connected to the desulfurization device, and a flow dividing device connected to each spraying device is arranged at the other end of the conveying device, and the flow dividing device is used for conveying the desulfurized wastewater to the corresponding spraying device.

3. The desulfurized wastewater discharge system according to claim 2, wherein: the target areas include a slag yard, an ash yard and a fuel coal yard; The conveying device further includes a main conveying pipe. The shunt device includes a first shunt channel corresponding to the slag bin, a second shunt channel corresponding to the ash bin, and a third shunt channel corresponding to the fuel coal yard. Wherein, the input end of the main conveying pipe is connected to the discharge end of the desulfurization device, the output end of the main conveying pipe is connected to the first shunt channel, the second shunt channel and the third shunt channel, the first shunt channel is connected to the spraying device corresponding to the slag bin, the second shunt channel is connected to the spraying device corresponding to the ash bin, and the third shunt channel is connected to the spraying device corresponding to the fuel coal yard.

4. The desulfurized wastewater discharge system according to claim 2, characterized in that: The system further includes a purging device for purging the conveying device.

5. The desulfurized wastewater discharge system according to any one of claims 1 to 4, characterized in that: The stirring assembly (102) includes a motor (102a), a stirring shaft (102b) connected to the motor (102a), a stirring blade (102c) fixedly connected to one end of the stirring shaft (102b), a sealing box (102d) connected to the stirring shaft (102b), and a bearing box (102e) provided on the stirring shaft (102b); The stirring shaft (102b) passes through the mounting ring (204a).

6. The desulfurized wastewater discharge system according to claim 5, wherein: The driven member (204l) includes a pushing block (204l-1) that moves horizontally along the rotating ring (204d), a push rod (204l-2) fixedly connected to the pushing block (204l-1), and a second spring (204l-3) connecting the pushing block (204l-1) and the rotating ring (204d); The limiting member (204m) includes a fixing plate (204m-1) with both ends fixedly connected to the inner wall of the mounting ring (204a), a third spring (204m-2) with one end fixedly connected to the fixing plate (204m-1), and a U-shaped lifting plate (204m-3) fixedly connected to the other end of the third spring (204m-2). Wherein, two openings are provided on the lifting plate.

7. The desulfurized wastewater discharge system according to claim 6, characterized in that: There are two groups of the oil storage assemblies (202); The oil storage assembly (202) includes a mounting box (202a) fixedly connected to the outer wall of the mounting ring (204a), an oil storage tank (202b) passing through both the protection box (201) and the mounting box (202a), an oil storage bladder (202c) communicated with the oil storage tank (202b), an oil outlet pipe (202d) communicated with the oil storage bladder (202c), a U-shaped moving plate (202e) driven by the push rod (204l-2), two first inclined blocks (202f) and two connecting plates (202g) fixedly connected to the side walls of the U-shaped moving plate (202e), a fourth spring (202h) connecting the connecting plates (202g) and the inner wall of the mounting box (202a), and two moving members (202i) driven by the two first inclined blocks (202f); The moving member (202i) includes a fifth spring (202i-1) with one end fixedly connected to the inner wall of the mounting box (202a), a fixed vertical plate (202i-2) fixedly connected to the other end of the fifth spring (202i-1), a moving rod (202i-3) passing through the fixed vertical plate (202i-2), and a second inclined block (202i-4) fixedly connected to one end of the moving rod (202i-3).

8. The desulfurized wastewater discharge system according to claim 7, wherein: There are two sets of the extrusion assemblies (203); The extrusion assembly (203) includes an extrusion rod (203a) passing through the mounting ring (204a), a mounting frame (203b) fixedly connected to the two mounting boxes (202a), a sleeve plate (203c) fixedly sleeved on the extrusion rod (203a), a sixth spring (203d) connecting the sleeve plate (203c) and the mounting frame (203b), and a third inclined block (203e) fixedly connected to the lower end of the extrusion rod (203a).

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