Desulfurization wastewater treatment equipment

Abstract

The utility model relates to desulfurization wastewater treatment equipment which comprises a shell, a stock bin, a driving motor and stirring blades, a cavity is formed in the shell, the stock bin is used for storing a neutralizer, the stock bin communicates with the cavity, a first water inlet hole and a first water outlet hole are formed in the shell and communicate with the cavity, the driving motor is installed outside the shell, and the stirring blades are arranged on the driving motor. The stirring blade is located in the cavity, the first water inlet hole is used for allowing waste water to enter the cavity, the stirring blade comprises a blade body and a transmission rod, the first end of the transmission rod is in transmission connection with the output end of the driving motor, the second end of the transmission rod is connected with the blade body, and the blade body is constructed to be a spiral blade arranged around the transmission rod; the motor extends in the direction away from the driving motor. Due to the fact that the blade body is the spiral blade, sediments formed by reaction in the waste water can be conveyed in the direction away from the driving motor through the conveying channel formed by the spiral blade, and therefore the sediments are accelerated to settle towards the bottom of the shell.

Description

Technical Field

[0001] The present disclosure relates to the technical field of desulfurization wastewater treatment, and in particular, to a desulfurization wastewater treatment device. Background Art

[0002] The flue gas discharged from the boiler of a thermal power plant contains a large amount of pollutants such as sulfur dioxide, nitrogen oxides and dust. Therefore, thermal power plants often use limestone-gypsum wet desulfurization technology to reduce sulfur dioxide, nitrogen oxides and dust in the flue gas. After flue gas desulfurization, a large amount of wastewater will be generated, which contains pollutants such as suspended matter, supersaturated sulfites, sulfates and heavy metals. Therefore, the wastewater treatment device is required to treat the wastewater before it can be discharged.

[0003] In the related art, the reaction rate and reaction completeness of sulfide and limestone in wastewater can be increased by stirring with blades. However, stirring easily increases the sedimentation time of suspended particles, which is not conducive to improving the wastewater treatment efficiency. Utility Model Content

[0004] The purpose of the present invention is to provide a desulfurization wastewater treatment device to solve the above technical problems.

[0005] In order to achieve the above-mentioned object, the present disclosure provides a desulfurization wastewater treatment equipment, including a shell, a silo, a driving motor and a stirring blade, a cavity is formed in the shell, the silo is used to store a neutralizing agent, the silo is communicated with the cavity, a first water inlet hole and a first drainage hole are formed on the shell, the first water inlet hole and the first drainage hole are both communicated with the cavity, the driving motor is installed outside the shell, the stirring blade is located in the cavity, the first water inlet hole is used to supply wastewater into the cavity,

[0006] The stirring blade includes a blade body and a transmission rod, wherein the first end of the transmission rod is transmission-connected to the output end of the drive motor, and the second end of the transmission rod is connected to the blade body. The blade body is constructed as a spiral blade arranged around the transmission rod and extends in a direction away from the drive motor.

[0007] Optionally, the shell is cylindrical, the drive motor is arranged at the center of the end surface of one end of the shell, the first end of the transmission rod is transmission-connected to the output end of the drive motor, and the transmission rod is located on the central axis of the shell.

[0008] Optionally, a slag discharge hole is further formed on the shell, the slag discharge hole is connected to the cavity, the slag discharge hole is arranged at an end of the shell away from the drive motor, and the slag discharge hole is located within the projection of the spiral blade on the bottom surface of the shell.

[0009] Optionally, the desulfurization wastewater treatment equipment further comprises a filter assembly, the filter assembly comprises a filter screen and a filter housing, a filter cavity is formed in the filter housing, the filter screen is located in the filter cavity,

[0010] A second water inlet hole and a second drainage hole are formed on the filter housing, the second water inlet hole and the second drainage hole are both connected to the filter cavity, and the first drainage hole on the housing is connected to the second water inlet hole on the filter housing through a connecting pipe.

[0011] Optionally, the filter assembly includes at least two filter screens, and the two filter screens are suitable for being arranged at intervals along the flow direction of the wastewater.

[0012] Optionally, the two filter screens include a first filter screen and a second filter screen, and the first filter screen and the second filter screen are suitable for being arranged in the filter cavity at intervals along the water flow direction;

[0013] The pore size of the filtering holes of the first filter screen is larger than the pore size of the filtering holes of the second filter screen.

[0014] Optionally, a long hole is formed on the filter housing, the long hole is used for the filter screen to pass through, the filter screen is provided with a gripping portion, the gripping portion is located outside the filter housing, and the filter screen can be taken out of the filter cavity through the long hole.

[0015] Optionally, the desulfurization wastewater treatment equipment further comprises a flow valve, which is arranged at the first drainage hole and is used to control the amount of wastewater entering the filter chamber.

[0016] Optionally, the desulfurization wastewater treatment equipment also includes a water inlet pipe and a connecting pipe, one end of the water inlet pipe is connected to the cavity, the other end of the water inlet pipe is constructed as the first water inlet hole, one end of the connecting pipe is connected to the first drain hole, and the other end of the connecting pipe is connected to the second water inlet hole of the filter shell.

[0017] Optionally, the feed port of the silo connected to the cavity is arranged on one side of the shell, the water inlet pipe and the connecting pipe are arranged on the other side of the shell opposite to the feed port, and the water inlet pipe is arranged at the upper end of the shell, and the connecting pipe is arranged at the lower end of the shell.

[0018] Through the above technical solution, since the blade body is a spiral blade, while the blade body rotates and stirs the wastewater, the fixed particles formed by the reaction in the wastewater can be transported in a direction away from the drive motor through the conveying channel formed by the spiral blade, that is, the sedimentation of the precipitate to the bottom of the shell is accelerated, thereby reducing the sedimentation time of solid particles or suspended matter in the wastewater, and further improving the wastewater treatment efficiency.

[0019] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0021] Figure 1 is a three-dimensional diagram of a desulfurization wastewater treatment device provided in one embodiment of the present disclosure;

[0022] Figure 2 is a cross-sectional view of a desulfurization wastewater treatment device provided by an embodiment of the present disclosure;

[0023] Figure 3 is a cross-sectional view of a filter assembly of a desulfurization wastewater treatment device provided in one embodiment of the present disclosure;

[0024] Figure 4 is a stereogram of a desulfurization wastewater treatment device provided by an embodiment of the present disclosure (with Figure 1 different angles).

[0025] Description of Reference Numerals

[0026] 100-desulfurization wastewater treatment equipment; 1-shell; 11-first water inlet; 12-first drain hole; 13-slag discharge hole; 14-cavity; 2-silo; 21-feed hole; 3-drive motor; 4-mixing blade; 41-blade body; 42-transmission rod; 5-filter assembly; 51-filter screen; 511-first filter screen; 512-second filter screen; 52-filter shell; 521-filter cavity; 522-second water inlet; 523-second drain hole; 6-connecting pipe; 7-flow valve; 8-water inlet pipe. DETAILED DESCRIPTION

[0027] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0028] In the present disclosure, unless otherwise stated, the directional words used, such as "upper" and "lower", are generally defined based on the placement state of the shell of the desulfurization wastewater treatment equipment during normal operation. It is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, and a specific orientation structure and operation, and therefore cannot be understood as a limitation of the present disclosure. "Inside and outside" refer to the inside and outside of the contour of the corresponding component. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "connected", and "installed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0030] like Figures 1 to 4 As shown, the present disclosure provides a desulfurization wastewater treatment equipment 100, including a shell 1, a silo 2, a driving motor 3 and a stirring blade 4, a cavity 14 is formed in the shell 1, the silo 2 is used to store a neutralizer, the silo 2 is connected to the cavity 14, a first water inlet hole 11 and a first drainage hole 12 are formed on the shell 1, the first water inlet hole 11 and the first drainage hole 12 are both connected to the cavity 14, the driving motor 3 is installed outside the shell 1, the stirring blade 4 is located in the cavity 14, the first water inlet hole 11 is used to supply wastewater to enter the cavity 14, the stirring blade 4 includes a blade body 41 and a transmission rod 42, a first end of the transmission rod 42 is transmission-connected to the output end of the driving motor 3, a second end of the transmission rod 42 is connected to the blade body 41, the blade body 41 is constructed as a spiral blade arranged around the transmission rod 42, and extends in a direction away from the driving motor 3.

[0031] Wastewater can enter the cavity 14 through the first water inlet hole 11. At the same time, the neutralizer in the silo 2 is added to the cavity 14. The neutralizer and wastewater react in the cavity 14. The drive motor 3 can drive the transmission rod 42 to rotate. When the transmission rod 42 rotates, the blade body 41 can be driven to rotate together, thereby stirring the mixture formed by the wastewater and the neutralizer.

[0032] Through the above technical solution, since the blade body 41 is a spiral blade, while the blade body 41 rotates and stirs the wastewater, the precipitate formed by the reaction in the wastewater can be transported in a direction away from the drive motor 3 through the conveying force formed by the spiral blade, that is, the precipitation is accelerated to settle to the bottom of the shell 1, thereby reducing the sedimentation time of solid particles or suspended matter in the wastewater, and further improving the wastewater treatment efficiency.

[0033] Optionally, the neutralizing agent may be lime or hydroxide, which is not limited in the present disclosure.

[0034] Alternatively, if Figure 1 As shown, a feeding hole 21 is formed on the side of the silo 2 away from the shell 1 , and an operator can add the neutralizing agent into the silo 2 through the feeding hole 21 .

[0035] Alternatively, if Figure 1 and Figure 2As shown, the housing 1 is cylindrical, the driving motor 3 is arranged at the center of the end surface of one end of the housing 1, the first end of the transmission rod 42 is connected to the output end of the driving motor 3, and the transmission rod 42 is located on the central axis of the housing 1. The driving motor 3 and the transmission rod 42 are both arranged on the central axis of the housing 1, so that the blade body 41 rotates around the central axis, so that the blade body 41 can fill the entire cavity 14 as much as possible, and then stir the mixture of wastewater and neutralizer in the cavity 14 to increase the reaction rate. At the same time, more sediment in the wastewater can be transported to the bottom of the housing 1 through the spiral blades to accelerate the sedimentation rate.

[0036] In order to discharge the sediment in the housing 1, optionally, as Figure 2 As shown, a slag discharge hole 13 is also formed on the shell 1, and the slag discharge hole 13 is connected to the cavity 14. The slag discharge hole 13 is arranged at the end of the shell 1 away from the driving motor 3, and the slag discharge hole 13 is located within the projection of the spiral blade on the bottom surface of the shell 1. Since the driving motor 3 is arranged at the top of the shell 1, the slag discharge hole 13 is arranged at the end of the shell 1 away from the driving motor 3, that is, the slag discharge hole 13 is arranged at the bottom of the shell 1, so that the sediment transported by the spiral blade can be discharged from the cavity 14 through the slag discharge hole 13, thereby further preventing the sediment from being discharged through the first drainage hole 12 along with the waste water after the reaction, and improving the cleanliness of the discharged waste water.

[0037] In order to further improve the slag discharge capacity of the shell 1, optionally, a circular groove may be formed at the bottom of the shell 1, and the projection of the blade body 41 on the bottom surface of the shell 1 can cover the circular groove, and there are multiple slag discharge holes 13, and the multiple slag discharge holes 13 are all located in the circular groove and arranged around the transmission rod 42. Sediments can be accumulated in the circular groove and discharged through the slag discharge holes 13 connected to the circular groove, thereby providing a channel for accommodating and discharging the sediments.

[0038] In addition, the projection of the blade body 41 on the bottom surface of the shell 1 is set to cover the circular groove. The blade body 41 can also use the conveying effect of the spiral blade when rotating to convey the sediment in the wastewater into the circular groove, further accelerating the collection and discharge of the sediment.

[0039] Optionally, a switch valve can also be provided at the slag discharge hole 13. When the desulfurization wastewater treatment equipment 100 is working normally, the switch valve can be in a closed state to allow the sediment to accumulate in the circular groove and the slag discharge hole 13. When the desulfurization wastewater treatment equipment 100 is being overhauled, the switch valve can be opened to discharge the sediment from the cavity 14 through the slag discharge hole 13.

[0040] To further purify the wastewater, optionally, e.g. Figure 1 , Figure 3 and Figure 4As shown, the desulfurization wastewater treatment equipment 100 also includes a filter assembly 5, the filter assembly 5 includes a filter screen 51 and a filter shell 52, a filter chamber 521 is formed in the filter shell 52, the filter screen 51 is located in the filter chamber 521, a second water inlet hole 522 and a second drainage hole 523 are formed on the filter shell 52, the second water inlet hole 522 and the second drainage hole 523 are both connected to the filter chamber 521, and the first drainage hole 12 on the shell 1 is connected to the second water inlet hole 522 on the filter shell 52 through a connecting pipe 6.

[0041] The filter chamber 521 of the filter housing 52 is connected to the cavity 14 through the connecting pipe 6. The waste water after the reaction is filtered through the filter screen 51 and then discharged through the second drainage hole 523, which can further filter the sediment in the waste water and improve the water quality of the waste water when it is discharged.

[0042] To improve the filtering effect, optionally, Figure 3 As shown, the filter assembly 5 includes at least two filter screens 51, and the two filter screens 51 are suitable for being arranged at intervals along the flow direction of the wastewater. The two filter screens 51 are arranged at intervals in the flow direction of the wastewater so that the wastewater can be filtered at least twice before being discharged through the second drain hole 523, further improving the filtering effect of the filter assembly 5.

[0043] In one embodiment provided by the present disclosure, Figure 3 As shown, the two filters 51 include a first filter 511 and a second filter 512. The first filter 511 and the second filter 512 are suitable for being arranged in the filter chamber 521 at intervals along the water flow direction. The aperture of the filter hole of the first filter 511 is larger than the aperture of the filter hole of the second filter 512. The aperture of the filter hole of the first filter 511 is set to be larger than the aperture of the filter hole of the second filter 512, so that when the wastewater passes through the first filter 511, the larger sediment is filtered first, and the remaining smaller sediment is filtered when the wastewater passes through the second filter 512, so that the sediment in the wastewater can be filtered more thoroughly.

[0044] In order to clean the filter 51, in one embodiment provided in the present disclosure, a long hole is formed on the filter housing 52, and the long hole is used for the filter 51 to pass through. A gripping portion is provided on the filter 51, and the gripping portion is located outside the filter housing 52. The filter 51 can be taken out of the filter cavity 521 through the long hole. The operator can take out the filter 51 in the filter cavity 521 from the long hole through the gripping portion, clean or replace the filter 51, thereby ensuring the filtering effect of the filter 51.

[0045] Optionally, a seal is provided at one end of the filter screen 51 near the gripping portion, and the seal is used to seal the hole wall of the long hole to seal the gap between the filter screen 51 and the hole wall of the long hole. The seal can seal the gap between the filter screen 51 and the long hole to prevent wastewater from flowing out of the filter chamber 521 through the gap.

[0046] In another embodiment provided in the present disclosure, the filter housing 52 is detachably connected to the end of the connecting pipe 6 away from the first drain hole 12 through the second water inlet hole 522. After the filter screen 51 has been used for a period of time, the filter housing 52 can be completely removed and replaced with a new filter screen 51, which further simplifies the maintenance process.

[0047] Alternatively, if Figure 4 As shown, the desulfurization wastewater treatment equipment 100 also includes a flow valve 7, which is arranged at the first drain hole 12 and is used to control the amount of wastewater entering the filter chamber 521. The flow valve 7 can ensure that the amount of wastewater entering the filter chamber 521 is relatively stable, thereby reducing the burden on the filter screen 51. In addition, when replacing or cleaning the filter screen 51, the flow valve 7 can be closed to ensure the normal progress of maintenance work.

[0048] Alternatively, if Figure 1 , Figure 2 and Figure 4 As shown, the desulfurization wastewater treatment equipment 100 also includes an inlet pipe 8 and a connecting pipe 6, one end of the inlet pipe 8 is connected to the cavity 14, the other end of the inlet pipe 8 is configured as a first water inlet hole 11, one end of the connecting pipe 6 is connected to the first drain hole 12, and the other end of the connecting pipe 6 is connected to the second water inlet hole 522 of the filter housing 52. Using the inlet pipe 8 and the connecting pipe 6 as the water inlet and drain pipelines is conducive to connecting with other pipelines and equipment.

[0049] Alternatively, if Figure 1 and Figure 4 As shown, the feed hole of the silo 2 connected to the cavity 14 is arranged on one side of the shell 1, the water inlet pipe 8 and the connecting pipe 6 are arranged on the other side of the shell 1 opposite to the feed hole, and the water inlet pipe 8 is arranged at the upper end of the shell 1, and the connecting pipe 6 is arranged at the lower end of the shell 1. The silo 2 and the water inlet pipe 8 and the connecting pipe 6 are arranged on opposite sides, so that the neutralizer and the wastewater can enter the cavity 14 from different directions, which can avoid the neutralizer and the wastewater from interfering with each other when entering the cavity 14, thereby improving the feeding efficiency. At the same time, the water inlet pipe 8 is arranged at the upper end of the shell 1, and the connecting pipe 6 is arranged at the lower end of the shell 1, so that the wastewater after the reaction can flow out of the shell 1 under the action of gravity, without the need to set up a special driving power, thereby reducing the complexity of the treatment equipment.

[0050] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0051] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0052] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A desulfurization wastewater treatment equipment, characterized in that: The invention comprises a shell, a silo, a driving motor and a stirring blade, wherein a cavity is formed in the shell, the silo is used to store a neutralizing agent, the silo is communicated with the cavity, a first water inlet hole and a first drainage hole are formed on the shell, the first water inlet hole and the first drainage hole are both communicated with the cavity, the driving motor is installed outside the shell, the stirring blade is located in the cavity, the first water inlet hole is used to supply wastewater into the cavity, The stirring blade includes a blade body and a transmission rod, wherein the first end of the transmission rod is transmission-connected to the output end of the drive motor, and the second end of the transmission rod is connected to the blade body. The blade body is constructed as a spiral blade arranged around the transmission rod and extends in a direction away from the drive motor.

2. The desulfurization wastewater treatment equipment according to claim 1, characterized in that: The shell is cylindrical, the drive motor is arranged at the center of the end surface of one end of the shell, the first end of the transmission rod is transmission-connected to the output end of the drive motor, and the transmission rod is located on the central axis of the shell.

3. The desulfurization wastewater treatment equipment according to claim 1, characterized in that: The shell is also provided with a slag discharge hole which is connected with the cavity, is arranged at an end of the shell away from the drive motor, and is located within the projection of the spiral blade on the bottom surface of the shell.

4. The desulfurization wastewater treatment equipment according to claim 1, characterized in that: The desulfurization wastewater treatment equipment further includes a filter assembly, which includes a filter screen and a filter housing. A filter cavity is formed in the filter housing, and the filter screen is located in the filter cavity. A second water inlet hole and a second drainage hole are formed on the filter housing, the second water inlet hole and the second drainage hole are both connected to the filter cavity, and the first drainage hole on the housing is connected to the second water inlet hole on the filter housing through a connecting pipe.

5. The desulfurization wastewater treatment equipment according to claim 4, characterized in that: The filter assembly comprises at least two filter screens, and the two filter screens are suitable for being arranged at intervals along the flow direction of the wastewater.

6. The desulfurization wastewater treatment equipment according to claim 5, characterized in that: The two filter screens include a first filter screen and a second filter screen, wherein the first filter screen and the second filter screen are suitable for being arranged in the filter cavity at intervals along the water flow direction; The pore size of the filtering holes of the first filter screen is larger than the pore size of the filtering holes of the second filter screen.

7. The desulfurization wastewater treatment equipment according to claim 4, characterized in that: The filter housing is formed with a long hole for allowing the filter screen to pass through. The filter screen is provided with a gripping portion, and the gripping portion is located outside the filter housing. The filter screen can be taken out of the filter cavity through the long hole.

8. The desulfurization wastewater treatment equipment according to claim 4, characterized in that: The desulfurization wastewater treatment equipment also includes a flow valve, which is arranged at the first drainage hole and is used to control the amount of wastewater entering the filter chamber.

9. The desulfurization wastewater treatment equipment according to any one of claims 4 to 8, characterized in that: The desulfurization wastewater treatment equipment also includes a water inlet pipe and a connecting pipe, one end of the water inlet pipe is connected to the cavity, the other end of the water inlet pipe is constructed as the first water inlet hole, one end of the connecting pipe is connected to the first drain hole, and the other end of the connecting pipe is connected to the second water inlet hole of the filter shell.

10. The desulfurization wastewater treatment equipment according to claim 9, characterized in that: The feed port of the silo connected to the cavity is arranged on one side of the shell, the water inlet pipe and the connecting pipe are arranged on the other side of the shell opposite to the feed port, and the water inlet pipe is arranged at the upper end of the shell, and the connecting pipe is arranged at the lower end of the shell.

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