Power plant desulfurized gypsum filter-pressing dehydrator

Abstract

The invention discloses a power plant desulfurized gypsum filter pressing dehydrator which comprises a dehydrator body and a driving mechanism, a pressing plate is welded to the top in the dehydrator body, a filter plate is arranged in the middle in the dehydrator body, the filter plate is slidably connected with the interior of the dehydrator body in the vertical direction, and the two sides of the bottom of the filter plate abut against a large rotating plate and a small rotating plate respectively; the number of the large rotating plates and the number of the small rotating plates are both two, a second rotating shaft penetrates through and is welded between the two large rotating plates, a first rotating shaft penetrates through and is welded between the two small rotating plates, and the driving mechanism is used for driving the first rotating shaft and the second rotating shaft to rotate asynchronously. According to the invention, during gravity filtration and separation, treated objects are continuously vibrated and raised, so that the rate of separating and filtering liquid downwards can be increased; when the treated object is extruded, the treated object repeatedly moves upwards, is extruded by the pressing plate and then moves downwards after being extruded, so that the treated object is vibrated and loosened, the treated object is prevented from being extruded into a cake shape after being extruded once, the liquid discharge amount can be increased through multiple times of extrusion, and the filtering effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of desulfurized azurite dehydration, in particular to a desulfurized gypsum filter press dehydrator for a power plant. Background Art

[0002] Desulfurization azurite in power plants usually refers to a chemical substance used for flue gas desulfurization, the main component of which is limestone (calcium carbonate) or other calcium-containing materials. In the desulfurization process of power plants, azurite is usually crushed and mixed with water to form a slurry, which is then sprayed into the flue gas to react with sulfur dioxide to produce harmless calcium sulfate (gypsum), thereby effectively reducing sulfur oxide emissions in the flue gas. This process helps meet environmental emission standards and reduce the impact on the environment.

[0003] The filter press dehydrator can effectively separate the solid calcium sulfate (gypsum) formed by the reaction of desulfurized azurite and sulfur dioxide from the remaining liquid, reducing the burden of wastewater treatment. However, the existing desulfurized azurite filter press dehydrator in power plants makes the treated material in a static state during the first filtration, and the efficiency of the liquid filtering downward through the filter plate due to gravity is relatively low; and when the treated material is subsequently pressurized, it is easy to be squeezed into a cake shape after one squeeze because the treated material is in a static state, which is not conducive to multiple squeezes to increase the liquid discharge volume, and the filtering effect needs to be improved. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a desulfurization gypsum filter press dehydrator for a power plant.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A desulfurized gypsum filter press dehydrator for a power plant, comprising: a dehydrator, a pressure plate is horizontally welded on the top of the dehydrator, a filter plate is horizontally arranged in the middle of the dehydrator, the filter plate and the inside of the dehydrator are vertically slidably connected, a large rotating plate and a small rotating plate are vertically abutted on both sides of the bottom of the filter plate, two large rotating plates and two small rotating plates are respectively provided, and a second rotating shaft is horizontally penetrated and welded between the two large rotating plates, and a first rotating shaft is horizontally penetrated and welded between the two small rotating plates;

[0007] The driving mechanism is used to drive the first rotating shaft and the second rotating shaft to rotate at different times.

[0008] As a further technical solution of the present invention, a side door is hinged on the upper side of the outer side of the dehydrator, a controller is fixedly installed on the outer side of the dehydrator, a drain pipe is horizontally connected to the bottom of the outer side of the dehydrator, and a valve is installed on the drain pipe.

[0009] As a further technical solution of the present invention, the driving mechanism includes a forward and reverse motor and a vertical shaft. An L-shaped mounting plate is welded on one side of the top of the dehydrator. The forward and reverse motor is vertically fixed on the bottom of the L-shaped mounting plate. Two vertical shafts are provided, and the top end of one of the vertical shafts is fixedly connected to the bottom of the output end of the forward and reverse motor.

[0010] As a further technical solution of the present invention, a support plate is horizontally welded on one side of the outside of the dehydrator, and another vertical axis vertically penetrates the support plate and is rotatably connected to the support plate. The same belt is connected between the top ends of the two vertical axes, and the belt passes through the L-shaped mounting plate.

[0011] During the first step of gravity filtration and separation, the rotating motor is started to drive one vertical shaft to rotate forward, and the other vertical shaft drives the other vertical shaft to rotate forward through a belt; during the second step of extrusion processing, the rotating motor is started to drive one vertical shaft to rotate reversely, and the other vertical shaft drives the other vertical shaft to rotate reversely through a belt.

[0012] As a further technical solution of the present invention, a driving bevel gear is welded to the bottom ends of the two vertical shafts, and driven bevel gears are meshed on the sides of the two driving bevel gears, a horizontal shaft is welded horizontally at the center of the two driven bevel gears, and a first large disc and a second large disc are respectively welded to the other ends of the two horizontal shafts.

[0013] The two vertical shafts drive the two active bevel gears to rotate forwardly, the two active bevel gears drive the two horizontal shafts to rotate forwardly through the two driven bevel gears, and the two horizontal shafts respectively drive the first large disc and the second large disc to rotate forwardly.

[0014] As a further technical solution of the present invention, a first circular groove is opened on the inner side of the first large disc, a first small disc is rotatably connected to the center of the first circular groove, a plurality of ratchets are evenly welded on the inner wall of the first circular groove, and a paddle is rotatably connected to the edge of one side of the first small disc.

[0015] As a further technical solution of the present invention, the front end of the toggle piece abuts between two adjacent ratchet teeth, an elastic piece and a limit pin are welded on one side of the first small disc, and the elastic piece and the limit pin abut against the inner and outer sides of the toggle piece respectively.

[0016] When the first large disk rotates forward, the two adjacent ratchets drive the front end of the toggle plate to rotate forward together. Because the outer side of the toggle plate abuts against the limit pin, the position of the limit pin will not change, and the front end of the toggle plate will not disengage from between the two adjacent ratchet teeth. The first large disk will drive the first small disk to rotate forward together through the toggle plate. At this time, the second large disk also rotates forward, and the two adjacent ratchets drive the front end of the toggle plate to rotate forward together. Because the inner side of the toggle plate abuts against the elastic plate, the toggle plate squeezes the elastic plate to deform it, and the toggle plate loses the abutting force and its front end disengages from between the two adjacent ratchet teeth. The second large disk will not drive the second small disk to rotate forward together through the toggle plate; when the first large disk rotates reversely, similarly the first large disk will not drive the first small disk to rotate reversely together. At this time, the second large disk also rotates reversely. Similarly, the second large disk will drive the second small disk to rotate reversely together through the toggle plate.

[0017] As a further technical solution of the present invention, a second circular groove is opened on the inner side of the second large disc, a second small disc is rotatably connected to the center of the second circular groove, and the structure in the second circular groove is symmetrical to the structure in the first circular groove.

[0018] As a further technical solution of the present invention, one end of the first rotating shaft and the second rotating shaft respectively pass through both sides of the dehydrator and are rotatably connected to the dehydrator, and one end of the first rotating shaft and the second rotating shaft are respectively welded to the center of the first small disc and the second small disc.

[0019] When the first small disc rotates forward, it will drive the first shaft to rotate forward, and the first shaft will drive the two small rotating plates to rotate forward. When the short side of the small rotating plate abuts the filter plate, the filter plate is at the lowest point, and when the long side of the small rotating plate rotates to abut the filter plate, the filter plate is at the highest point. In this way, the filter plate is driven to move up and down reciprocatingly, and the processed material on the top of the filter plate is lifted up. The continuous vibration and lifting of the processed material can accelerate the rate of separating and filtering the liquid downward, avoiding being in a static state all the time and affecting the separation efficiency. At this time, the second shaft will not drive the large rotating plate to rotate forward; the second small disc When rotating in the opposite direction, the second rotating shaft will be driven to rotate in the opposite direction, and the second rotation will drive the two large rotating plates to rotate in the opposite direction. When the short side of the large rotating plate abuts the filter plate, the filter plate is at the lowest point, and when the long side of the large rotating plate rotates to abut the filter plate, the filter plate is at the highest point, thereby driving the processed material on the filter plate to repeatedly move upward and be squeezed by the pressure plate, and then move downward after squeezing to make the processed material vibrate and loosen, thereby preventing the processed material from being squeezed into a cake shape after one squeezing, which is conducive to multiple squeezing to increase the liquid discharge volume and improve the filtering effect. At this time, the first rotating shaft will not drive the small rotating plate to rotate in the opposite direction.

[0020] The beneficial effects of the present invention are as follows: during the first step of gravity filtration separation, the treated material is continuously vibrated and lifted up to speed up the rate of separating and filtering the liquid downward, thereby avoiding being in a static state all the time and affecting the separation efficiency; during the second step of extruding the treated material, the treated material is repeatedly moved upward and extruded by the pressure plate, and then moved downward after extrusion to vibrate and loosen the treated material, thereby avoiding the treated material being squeezed into a cake shape after one extrusion, which is conducive to multiple extrusions to increase the liquid discharge volume and improve the filtration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a desulfurization gypsum filter press dehydrator for a power plant proposed by the present invention;

[0022] Figure 2 This is a rear structural schematic diagram of a desulfurization gypsum filter press dehydrator for a power plant proposed by the present invention;

[0023] Figure 3 This is a schematic cross-sectional view of a desulfurization gypsum filter press dehydrator for a power plant proposed by the present invention;

[0024] Figure 4 A schematic diagram of the partial structure of a desulfurization gypsum filter press dehydrator for a power plant proposed by the present invention Figure 1 ;

[0025] Figure 5 A schematic diagram of the partial structure of a desulfurization gypsum filter press dehydrator for a power plant proposed by the present invention Figure 2 .

[0026] In the figure: 1. L-shaped mounting plate; 2. forward and reverse motors; 3. vertical axis; 4. active bevel gear; 5. driven bevel gear; 6. horizontal axis; 7. first large disc; 8. dehydrator; 9. side door; 10. belt; 11. support plate; 12. second large disc; 13. valve; 14. drain pipe; 15. controller; 16. pressure plate; 17. filter plate; 18. second rotating shaft; 19. large rotating plate; 20. first rotating shaft; 21. small rotating plate; 22. elastic sheet; 23. second circular groove; 24. second small disc; 25. ratchet; 26. toggle sheet; 27. limit pin; 28. first small disc; 29. ​​first circular groove. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0028] Please refer to the attached Figure 1 -Attached Figure 5A desulfurized gypsum filter press dehydrator for a power plant, comprising: a dehydrator 8, a pressure plate 16 is horizontally welded on the top of the dehydrator 8, a filter plate 17 is horizontally arranged in the middle of the dehydrator 8, the filter plate 17 is vertically slidably connected to the inside of the dehydrator 8, a large rotating plate 19 and a small rotating plate 21 are vertically abutted on both sides of the bottom of the filter plate 17, two large rotating plates 19 and two small rotating plates 21 are respectively provided, and a second rotating shaft 18 is horizontally penetrated and welded between the two large rotating plates 19, and a first rotating shaft 20 is horizontally penetrated and welded between the two small rotating plates 21;

[0029] The second rotating shaft 18 and the first rotating shaft 20 pass through one end of the large rotating plate 19 and the small rotating plate 21 respectively.

[0030] The driving mechanism is used to drive the first rotating shaft 20 and the second rotating shaft 18 to rotate at different times.

[0031] Please refer to the attached Figure 1-2 In a preferred embodiment, a side door 9 is hinged on the upper side of the outer side of the dehydrator 8, a controller 15 is fixedly installed on the outer side of the dehydrator 8, a drain pipe 14 is horizontally connected to the bottom of the outer side of the dehydrator 8, and a valve 13 is installed on the drain pipe 14.

[0032] The side door 9 can be opened to add the processed material to be dehydrated, and the processed material after dehydration can be cleared out; the controller 15 controls the operation of the electrical equipment; the valve 13 can be opened to discharge the liquid through the drain pipe 14.

[0033] Please refer to the attached Figure 1-5 In a preferred embodiment, the driving mechanism includes a forward and reverse motor 2 and a vertical shaft 3. An L-shaped mounting plate 1 is welded on one side of the top of the dehydrator 8. The forward and reverse motor 2 is vertically fixedly installed on the bottom of the L-shaped mounting plate 1. Two vertical shafts 3 are provided, and the top of one of the vertical shafts 3 is fixedly connected to the bottom of the output end of the forward and reverse motor 2.

[0034] The L-shaped mounting plate 1 provides support for the forward and reverse motors 2 .

[0035] Please refer to the attached Figure 1-5 In a preferred embodiment, a support plate 11 is horizontally welded on one side of the outside of the dehydrator 8, and another vertical shaft 3 vertically penetrates the support plate 11 and is rotatably connected to the support plate 11, and the same belt 10 is connected between the top ends of the two vertical shafts 3, and the belt 10 passes through the L-shaped mounting plate 1.

[0036] The support plate 11 provides support for the other vertical shaft 3 , and the belt 10 does not contact the L-shaped mounting plate 1 .

[0037] Please refer to the attached Figure 1-5In a preferred embodiment, a driving bevel gear 4 is welded to the bottom ends of the two vertical shafts 3, and driven bevel gears 5 are meshed on the sides of the two driving bevel gears 4. A horizontal shaft 6 is welded horizontally at the center of the two driven bevel gears 5, and the other ends of the two horizontal shafts 6 are respectively welded to a first large disc 7 and a second large disc 12.

[0038] Please refer to the attached Figure 1-5 In a preferred embodiment, a first circular groove 29 is opened on the inner side of the first large disk 7, a first small disk 28 is rotatably connected to the center of the first circular groove 29, a plurality of ratchet teeth 25 are evenly welded on the inner wall of the first circular groove 29, and a paddle 26 is rotatably connected to one edge of the first small disk 28.

[0039] Please refer to the attached Figure 1-5 In a preferred embodiment, the front end of the toggle piece 26 abuts between two adjacent ratchet teeth 25, and an elastic piece 22 and a limit pin 27 are welded on one side of the first small disc 28, and the elastic piece 22 and the limit pin 27 abut against the inner and outer sides of the toggle piece 26 respectively.

[0040] Please refer to the attached Figure 1-5 In a preferred embodiment, a second circular groove 23 is opened inside the second large disc 12, a second small disc 24 is rotatably connected to the center of the second circular groove 23, and the structure inside the second circular groove 23 and the structure inside the first circular groove 29 are symmetrically arranged.

[0041] Please refer to the attached Figure 1-5 In a preferred embodiment, one end of the first rotating shaft 20 and the second rotating shaft 18 respectively pass through both sides of the dehydrator 8 and are rotatably connected to the dehydrator 8, and one end of the first rotating shaft 20 and the second rotating shaft 18 are respectively welded to the center of the first small disc 28 and the second small disc 24.

[0042] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: when the first step of gravity filtration and separation is performed, the rotating motor is started to drive a vertical shaft 3 to rotate forward, and a vertical shaft 3 drives another vertical shaft 3 to rotate forward through a belt 10, and the two vertical shafts 3 drive two active bevel gears 4 to rotate forward, and the two active bevel gears 4 drive two horizontal shafts 6 to rotate forward through two driven bevel gears 5, and the two horizontal shafts 6 respectively drive the first large disc 7 and the second large disc 12 to rotate forward. When the first large disc 7 rotates forward, the two adjacent ratchet teeth 25 drive the front end of the toggle piece 26 to rotate forward together, because the outer side of the toggle piece 26 abuts against the limit pin 27, and the position of the limit pin 27 will not change. Then the front end of the toggle plate 26 will not be separated from between the two adjacent ratchet teeth 25, and the first large disc 7 will drive the first small disc 28 to rotate forwardly through the toggle plate 26. When the first small disc 28 rotates forwardly, it will drive the first rotating shaft 20 to rotate forwardly, and the first rotating shaft 20 will drive the two small rotating plates 21 to rotate forwardly. When the short side of the small rotating plate 21 abuts against the filter plate 17, the filter plate 17 is at the lowest point, and when the long side of the small rotating plate 21 rotates to abut against the filter plate 17, the filter plate 17 is at the highest point. In this way, the filter plate 17 is driven to move up and down reciprocatingly, and the processed material on the top of the filter plate 17 is lifted up. The processed material is continuously vibrated and lifted up, which can accelerate the rate of separating and filtering the liquid downward, and avoid being in a static state all the time, which affects the separation efficiency.

[0043] At this time, the second large disc 12 also rotates forward, and the two adjacent ratchet teeth 25 drive the front end of the paddle plate 26 to rotate forward together. Because the inner side of the paddle plate 26 abuts against the elastic sheet 22, the paddle plate 26 squeezes the elastic sheet 22 to deform it, and the paddle plate 26 loses its abutting force and its front end disengages from between the two adjacent ratchet teeth 25. The second large disc 12 will not drive the second small disc 24 to rotate forward together through the paddle plate 26, and the second small disc 24 will not lead the second shaft 18 to rotate forward, and the second shaft 18 will not drive the large rotating plate 19 to rotate forward.

[0044] When the second step of extruding the processed object, the rotating motor is started to drive one vertical shaft 3 to rotate in the opposite direction, and one vertical shaft 3 drives another vertical shaft 3 to rotate in the opposite direction through the belt 10, and similarly drives the first large disc 7 and the second large disc 12 to rotate in the opposite direction. When the first large disc 7 rotates in the opposite direction, the first large disc 7 will not drive the first small disc 28 to rotate in the opposite direction, and the first small disc 28 will not drive the first rotating shaft 20 to rotate in the opposite direction, and the first rotating shaft 20 will not drive the small rotating plate 21 to rotate in the opposite direction;

[0045] At this time, the second large disc 12 also rotates in the opposite direction. Similarly, the second large disc 12 will drive the second small disc 24 to rotate in the opposite direction through the paddle piece 26. When the second small disc 24 rotates in the opposite direction, it will drive the second rotating shaft 18 to rotate in the opposite direction. The second rotation drives the two large rotating plates 19 to rotate in the opposite direction. When the short side of the large rotating plate 19 abuts against the filter plate 17, the filter plate 17 is at the lowest point. When the long side of the large rotating plate 19 rotates to abut against the filter plate 17, the filter plate 17 is at the highest point, thereby driving the processed material on the filter plate 17 to repeatedly move upward and be squeezed by the pressing plate 16, and then move downward after squeezing to make the processed material vibrate and loosen, thereby preventing the processed material from being squeezed into a cake shape after one squeezing, which is beneficial to multiple squeezing to increase the liquid discharge amount and improve the filtering effect.

[0046] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0047] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A desulfurization gypsum filter press dehydrator for a power plant, characterized in that: include: A dehydrator (8), wherein a pressure plate (16) is horizontally welded on the top of the dehydrator (8), a filter plate (17) is horizontally arranged in the middle of the dehydrator (8), the filter plate (17) and the inside of the dehydrator (8) are vertically slidably connected, a large rotating plate (19) and a small rotating plate (21) are vertically abutted on both sides of the bottom of the filter plate (17), two large rotating plates (19) and two small rotating plates (21) are provided, and a second rotating shaft (18) is horizontally penetrated and welded between the two large rotating plates (19), and a first rotating shaft (20) is horizontally penetrated and welded between the two small rotating plates (21); A driving mechanism is provided, wherein the driving mechanism is used to drive the first rotating shaft (20) and the second rotating shaft (18) to rotate at different times.

2. A power plant desulfurization gypsum filter press dehydrator according to claim 1, characterized in that: A side door (9) is hingedly connected to the upper side of the outer side of the dehydrator (8), a controller (15) is fixedly installed to the outer side of the dehydrator (8), and a drainage pipe (14) is horizontally connected to the bottom of the outer side of the dehydrator (8), and a valve (13) is installed on the drainage pipe (14).

3. A power plant desulfurization gypsum filter press dehydrator according to claim 1, characterized in that: The driving mechanism comprises a forward and reverse motor (2) and a vertical shaft (3); an L-shaped mounting plate (1) is welded to one side of the top of the dehydrator (8); the forward and reverse motor (2) is vertically fixedly mounted on the bottom of the L-shaped mounting plate (1); two vertical shafts (3) are provided, and the top end of one of the vertical shafts (3) is fixedly connected to the bottom of the output end of the forward and reverse motor (2).

4. A power plant desulfurization gypsum filter press dehydrator according to claim 3, characterized in that: A support plate (11) is horizontally welded to one side of the outside of the dehydrator (8), and another vertical shaft (3) vertically penetrates the support plate (11) and is rotatably connected to the support plate (11). The top ends of the two vertical shafts (3) are connected to a same belt (10), and the belt (10) passes through the L-shaped mounting plate (1).

5. A power plant desulfurization gypsum filter press dehydrator according to claim 4, characterized in that: A driving bevel gear (4) is welded to the bottom ends of the two vertical shafts (3), and a driven bevel gear (5) is meshed on the sides of the two driving bevel gears (4). A horizontal shaft (6) is welded horizontally at the center of the two driven bevel gears (5), and a first large disc (7) and a second large disc (12) are respectively welded to the other ends of the two horizontal shafts (6).

6. A power plant desulfurization gypsum filter press dehydrator according to claim 5, characterized in that: A first circular groove (29) is provided on the inner side of the first large circular disc (7), a first small circular disc (28) is rotatably connected to the center of the first circular groove (29), a plurality of ratchet teeth (25) are uniformly welded to the inner wall of the first circular groove (29), and a paddle (26) is rotatably connected to the edge of one side of the first small circular disc (28).

7. A power plant desulfurization gypsum filter press dehydrator according to claim 6, characterized in that: The front end of the toggle piece (26) abuts between two adjacent ratchet teeth (25); an elastic piece (22) and a limit pin (27) are welded to one side of the first small disc (28); the elastic piece (22) and the limit pin (27) respectively abut against the inner side and the outer side of the toggle piece (26).

8. A power plant desulfurization gypsum filter press dehydrator according to claim 7, characterized in that: A second circular groove (23) is provided on the inner side of the second large circular disc (12), a second small circular disc (24) is rotatably connected to the center of the second circular groove (23), and the structure in the second circular groove (23) and the structure in the first circular groove (29) are symmetrically arranged.

9. A power plant desulfurization gypsum filter press dehydrator according to claim 8, characterized in that: One end of the first rotating shaft (20) and one end of the second rotating shaft (18) respectively pass through both sides of the dehydrator (8) and are rotatably connected to the dehydrator (8); one end of the first rotating shaft (20) and one end of the second rotating shaft (18) are respectively welded to the center of the first small disc (28) and the second small disc (24).

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