Chemical water treatment device for thermal power plant

Abstract

The utility model discloses a chemical water treatment device for a thermal power plant, which belongs to the technical field of chemical water treatment equipment for thermal power plants and comprises a support bottom plate, a horizontal drum and a plurality of groups of filter units. Racks suitable for the ends of the rollers are arranged at the two ends of the supporting bottom plate. The two ends of the horizontal roller are open, the horizontal roller is provided with a containing cavity with the preset operation length, and the horizontal roller is rotationally arranged between the two racks and has the preset vertical distance with the supporting operation face of the supporting bottom plate. The roller is connected with a rotary drive, the rotary drive is suitable for driving the roller to rotate relative to the rack, and the rack is provided with a sealing cover plate for sealing the corresponding end of the roller; the corresponding sealing cover plates are respectively provided with a water inlet pipe and a water outlet pipe suitable for water inlet and outlet of the roller; the multiple groups of filtering units are arranged at intervals along the water inlet and outlet direction of the roller and are suitable for filtering water in the roller, so that dynamic blockage prevention of the filter screen is realized, the filtering flux is maintained, the manual cleaning frequency is reduced, and the efficiency of raw water entering the next treatment stage is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of chemical water treatment equipment for thermal power plants, and particularly relates to a chemical water treatment device for thermal power plants. Background Technology

[0002] Chemical water treatment in thermal power plants is a key process that uses physical, chemical, and biological methods to purify production water and wastewater, ensuring the safe operation of the thermal system and meeting environmental protection requirements.

[0003] Chemical water treatment removes suspended solids, colloids, and large particulate impurities (such as ash and gravel) from raw water during the pretreatment stage through mechanical filtration, coagulation, and sedimentation. This prevents clogging of high-precision equipment such as reverse osmosis membranes and ion exchange resins, reducing system failure rates. However, during the pretreatment stage, filter screens inevitably become clogged after a period of use, requiring manual cleaning by staff. In contrast, typical static filtration requires frequent manual cleaning, and the filter screens are not easy to maintain or replace. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a chemical water treatment device for thermal power plants.

[0005] The technical solution adopted by this utility model is as follows: A chemical water treatment device for a thermal power plant includes a supporting base plate, a horizontal drum, and multiple sets of filter units; the supporting base plate has corresponding supporting force, and frames suitable for the ends of the drum are configured at both ends; the horizontal drum is open at both ends and has a receiving chamber with a predetermined working length, and is rotatably configured between the two frames and has a predetermined vertical distance from the supporting working surface of the supporting base plate; the drum is connected to a rotary drive, which is suitable for driving the drum to rotate relative to the frame, and the frame has a sealing cover plate for sealing the corresponding ends of the drum; the corresponding sealing cover plate is respectively configured with an inlet pipe and an outlet pipe suitable for water entering and exiting the drum; multiple sets of filter units are arranged at intervals along the water entering and exiting direction of the drum, suitable for filtering the water inside the drum.

[0006] Furthermore, the filtration unit includes a fixed frame, a filter plate, and a sliding drive; the fixed frame is disposed at a corresponding position on the outer wall of the drum; the filter plate includes a sliding frame and a filter part disposed within the sliding frame, the filter part matching the inner cavity of the drum, suitable for performing corresponding filtration operations in the water inlet and outlet directions of the drum, the sliding frame being slidable in and out of the drum and the fixed frame; the sliding drive is disposed on the outer wall of the fixed frame, the telescopic end being connected to the sliding frame of the filter plate, driving the filter part of the filter plate to move in and out of the drum perpendicular to the water inlet and outlet directions.

[0007] Furthermore, an auxiliary rotating unit is mounted on the base plate via a support frame. The auxiliary rotating unit is configured in multiple sets, including a fixed rotating ring fixedly mounted at a corresponding position on the outer wall of the roller and a rotating roller mounted on the top of the support frame via a bracket. The rotating roller is mounted on both sides of the fixed rotating ring and the outer wall of the rotating roller abuts against the outer wall of the fixed rotating ring.

[0008] Furthermore, the inner wall of the drum is provided with multiple sets of spiral blades, each set of spiral blades consisting of blades with opposite directions, and the filter unit is located between two adjacent sets of spiral blades.

[0009] Furthermore, the sliding frame is provided with connecting ears on both sides of the end outside the roller. The sliding drive corresponds to the connecting ears one by one. The connecting ears are provided with through holes for the telescopic end of the sliding drive to pass through. The telescopic end of the sliding drive extends out of the through holes and can be adapted to the bolt.

[0010] Furthermore, the rotation drive includes a gear ring fixed to the outer wall of the drum; and a drive gear mounted on the outer side of the drum via a bracket, the drive gear meshing with the gear ring teeth, the drive gear being connected to a drive motor, and the drive motor being adapted to drive the drive gear to rotate relative to the bracket.

[0011] The beneficial effects of this utility model after adopting the above structure are as follows:

[0012] (1) By fixing multiple sets of spiral blades on the inner wall of the drum, the spiral blades rotate synchronously with the drum when the drum rotates. Each set of spiral blades is an inward and outward opposite blade, which can form a vortex, peel off the filter cake attached to the surface of the filter screen, rotate and push the water flow to flush the filter screen, reduce the local accumulation of filter cake, realize dynamic anti-clogging of the filter screen, maintain the filtration flux, reduce the frequency of manual cleaning, and improve the efficiency of raw water entering the next treatment stage.

[0013] (2) The filter section of multiple filter plates can be set with different filter screens that can filter impurities of different particle sizes (such as flocculents, sediment particles, etc.), which improves the system's ability to process complex water quality. The pull-out design of the filter plates makes it easy to maintain the filter section.

[0014] (3) The integrated design of fixed spiral blades and drum simplifies the transmission components, reduces the risk of mechanical failure inside the drum, and meets the process requirements of high-temperature media in chemical water treatment in thermal power plants. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] Figure 1This is a schematic diagram of the overall structure of a chemical water treatment device for a thermal power plant proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the drum in a chemical water treatment device for a thermal power plant, as proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the spiral blade structure of a chemical water treatment device for a thermal power plant proposed in this utility model.

[0019] Figure 4 This is a schematic diagram of the filter unit structure of a chemical water treatment device for a thermal power plant proposed in this utility model.

[0020] In the attached diagram: 1. Support base plate, 2. Horizontal drum, 3. Filter unit, 4. Frame, 5. Enclosed cover, 6. Inlet pipe, 7. Outlet pipe, 8. Fixed frame, 9. Sliding frame, 10. Filter section, 11. Fixed rotating ring, 12. Rotating roller, 13. Spiral blade, 14. Connecting lug, 15. Gear ring, 16. Drive gear, 17. Drive motor, 18. Telescopic push rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] like Figures 1-4As shown, a chemical water treatment device for a thermal power plant includes a supporting base plate 1, a horizontal drum 2, and multiple sets of filter units 3. The supporting base plate 1 has corresponding support force and is equipped with frames 4 at both ends suitable for the ends of the drum. The horizontal drum 2 is open at both ends and has a receiving chamber of a predetermined working length. It is rotatably arranged between the two frames 4 and has a predetermined vertical distance from the supporting working surface of the supporting base plate 1. The frames 4 are equipped with sealing covers 5 to close the corresponding ends of the drum. The corresponding sealing covers 5 are respectively equipped with inlet pipes 6 and outlet pipes 7 suitable for water inlet and outlet of the drum. Multiple sets of spiral blades 1 are arranged on the inner wall of the drum. 3. Each set of spiral blades 13 consists of inward and outward reversed blades. The filter unit 3 is located between two adjacent sets of spiral blades. The spiral blades 13 rotate synchronously with the drum. The spiral blades 13 rotate as a whole with the drum, pushing the water flow evenly through the filter screen, reducing local accumulation of filter cake, maintaining filtration flux, and avoiding the efficiency reduction caused by clogging in traditional static filtration. Moreover, each set of spiral blades consists of inward and outward reversed blades, which can form a vortex, peel off the filter cake attached to the surface of the filter screen, and rotate to push the water flow to flush the filter screen, reducing local accumulation of filter cake, realizing dynamic anti-clogging of the filter screen, and reducing the frequency of manual cleaning.

[0024] In some preferred embodiments, the roller is connected to a rotary drive adapted to drive the roller to rotate relative to the frame 4. The rotary drive includes a gear ring 15 fixed to the outer wall of the roller; a drive gear 16 mounted on the outer side of the roller via a bracket, the drive gear 16 meshing with the gear ring 15; the drive gear 16 is connected to a drive motor 17 adapted to drive the drive gear 16 to rotate relative to the bracket; a reducer is connected to the rotary drive to facilitate control of the roller's rotational speed. When the rotary drive is started, the drive gear 16 rotates, driving the gear ring 15 to rotate, which in turn drives the roller to rotate; the roller is connected to the closed cover plate 5 of the frame 4 at its end via a sealed bearing. The roller can have a double structure with an inner and outer layer, with a certain gap reserved between the inner and outer layers to facilitate the placement of the sealed bearing at the end.

[0025] To achieve stable rotation of the drum, in this embodiment, it is preferable that an auxiliary rotation unit is mounted on the base plate via a support frame. The auxiliary rotation unit is configured in multiple sets, including a fixed rotating ring 11 fixedly mounted on the outer wall of the drum at a corresponding position and a rotating roller 12 mounted on the top of the support frame via a bracket. The rotating roller 12 is mounted on both sides of the fixed rotating ring 11 and the outer wall of the rotating roller 12 abuts against the outer wall of the fixed rotating ring 11. The rotating roller 12 assists the frame 4 in supporting the drum. When the drum rotates, the rotating roller is driven to rotate, ensuring the stability of the drum rotation.

[0026] In some preferred embodiments, multiple sets of filter units 3 are spaced apart along the water inlet and outlet direction of the drum, suitable for filtering the water inside the drum. Each filter unit 3 includes a fixed frame 8, a filter plate, and a sliding drive. The fixed frame 8 is disposed at a corresponding position on the outer wall of the drum. The filter plate includes a sliding frame 9 and a filter part 10 disposed within the sliding frame 9. The filter part 10 matches the inner cavity of the drum and is suitable for performing corresponding filtration operations in the water inlet and outlet direction of the drum. The sliding frame 9 can slide in and out of the drum and the fixed frame 8. The sliding drive is disposed on the outer wall of the fixed frame 8, and its telescopic end is connected to the sliding frame 9 of the filter plate, driving the filter part 10 of the filter plate to move in and out of the drum perpendicular to the water inlet and outlet direction.

[0027] The sliding frame 9 has connecting ears 14 on both sides of its outer end of the drum. Each connecting ear 14 corresponds to a sliding drive. Each connecting ear 14 has a through hole for the telescopic end of the sliding drive to pass through. The telescopic end of the sliding drive extends out of the through hole and can be fitted with a bolt. The sliding drive can be a telescopic push rod 18, which pushes the filter plate in and out of the drum during telescopic operation. The filter plate, drum, and fixed frame 8 are in a sealed sliding configuration.

[0028] Working principle: Place the device in a suitable working position, connect the inlet pipe 6 to the water source to be treated, and introduce raw water into the drum; start the drive motor 17 to make the drum rotate. When the drum rotates, the multiple sets of spiral blades 13 fixed inside rotate, pushing the water through multiple sets of filter plates to achieve multiple filtrations; when the water passes through the drum, the counter-rotating spiral blades 13 form a vortex, peeling off the filter cake attached to the surface of the filter screen. The rotation pushes the water flow to wash the filter screen, avoiding filter cake accumulation, maintaining filtration flow, and reducing the frequency of filter plate maintenance. When the filter plate needs to be replaced, after stopping the machine, the filter plate is pushed out of the drum by the telescopic push rod 18 for cleaning or replacement of the filtration section 10.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents. In summary, if those skilled in the art, inspired by this description, design similar structural methods and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention. Each component of this application can be driven by a corresponding external motor; this is prior art and will not be elaborated upon here.

Claims

1. A chemical water treatment device for a thermal power plant, characterized in that, include: The base plate is supported and has the corresponding support force, and the two ends are equipped with frames suitable for the ends of the rollers; A horizontal drum, open at both ends and with a accommodating chamber of a predetermined working length, is rotatably positioned between two frames and at a predetermined vertical distance from the supporting working surface of the supporting base plate; the drum is connected to a rotary drive, which is adapted to drive the drum to rotate relative to the frame; the frame has a sealing cover plate that closes the corresponding end of the drum; the corresponding sealing cover plate is respectively equipped with an inlet pipe and an outlet pipe suitable for water to enter and exit the drum. Multiple filter units are arranged at intervals along the water inlet and outlet direction of the drum, which is suitable for filtering the water inside the drum.

2. The chemical water treatment device for a thermal power plant according to claim 1, characterized in that, The filtering unit includes: A fixed frame is positioned at the corresponding location on the outer wall of the roller. The filter plate includes a sliding frame and a filter section disposed within the sliding frame. The filter section matches the inner cavity of the drum and is suitable for performing corresponding filtration operations in the water inlet and outlet directions of the drum. The sliding frame can slide in and out of the drum and the fixed frame. The sliding drive is configured on the outer wall of the fixed frame, and the telescopic end is connected to the sliding frame of the filter plate, which drives the filter part of the filter plate to move in and out of the roller perpendicular to the water inlet and outlet direction.

3. The chemical water treatment device for a thermal power plant according to claim 1, characterized in that: An auxiliary rotating unit is mounted on the base plate via a support frame. The auxiliary rotating unit is configured in multiple sets, including a fixed rotating ring fixedly mounted on the outer wall of the roller at a corresponding position and a rotating roller mounted on the top of the support frame via a bracket. The rotating roller is mounted on both sides of the fixed rotating ring and the outer wall of the rotating roller abuts against the outer wall of the fixed rotating ring.

4. The chemical water treatment device for a thermal power plant according to claim 1, characterized in that: The inner wall of the drum is equipped with multiple sets of spiral blades, each set of spiral blades consisting of blades with opposite directions inside and out, and the filter unit is located between two adjacent sets of spiral blades.

5. A chemical water treatment device for a thermal power plant according to claim 2, characterized in that: The sliding frame is provided with connecting ears on both sides of the end outside the roller. The sliding drive corresponds to the connecting ears one by one. The connecting ears are provided with through holes for the telescopic end of the sliding drive to pass through. The telescopic end of the sliding drive extends out of the through holes and can be adapted to the bolt.

6. A chemical water treatment device for a thermal power plant according to claim 1, characterized in that: The rotation drive includes a gear ring fixed to the outer wall of the drum; a drive gear mounted on the outside of the drum via a bracket, the drive gear meshing with the gear ring teeth, the drive gear being connected to a drive motor, and the drive motor being adapted to drive the drive gear to rotate relative to the bracket.

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