Gypsum discharge pump outlet pipeline structure

Abstract

The utility model belongs to the technical field of gypsum slurry conveying, and particularly relates to a gypsum discharge pump outlet pipeline structure which comprises a slurry pump and a conveying pipe fixedly connected to the input end of the slurry pump. The filtering assembly comprises a filtering box fixedly connected to one side of the conveying pipe, an arc-shaped filtering net installed in the filtering box and a fixing frame fixedly connected to the interior of the filtering box. Slurry entering the filter box can be filtered through an arc-shaped filter screen, impurities filtered on the surface of the arc-shaped filter screen can be conveyed through a conveying auger, the rotating speed of the conveying auger driven by a motor is low, the filtering effect of the arc-shaped filter screen on the slurry is improved, the conveyed impurities can be pushed into a slag discharging pipe through a scraper, follow-up treatment is facilitated, and the practicability is high. The filter box can be opened by dismounting the fixed door, so that the arc-shaped filter screen and the conveying auger in the filter box can be conveniently cleaned or replaced.

Description

Technical Field

[0001] The utility model belongs to the technical field of gypsum slurry transportation, and in particular relates to an outlet pipeline structure of a gypsum discharge pump. Background Art

[0002] Coal-fired flue gas contains a large amount of SO2, smoke, and a small amount of HCl, HF, SO3, heavy metals and other pollutants. Currently, the most commonly used flue gas desulfurization device is the wet flue gas desulfurization device, and the limestone-gypsum wet method is the most widely used in wet desulfurization.

[0003] In the wet limestone flue gas desulfurization process, under normal flue gas desulfurization conditions, slurry with CaCO3 as the main component is repeatedly pumped to the desulfurization tower by multiple circulating pumps for countless times, and is connected to the multi-layer glass fiber reinforced plastic spray pipe installed on the upper part of the desulfurization tower to form a mist under the action of pressure and nozzles. The CaCO3 in the mist slurry is fused with SO2 in the flue gas to react chemically; at the same time, at the bottom of the desulfurization tower, the compressed air generated by the oxidation fan continuously tumbles and oxidizes the slurry in the closed circulating oxidation pool at the bottom of the desulfurization tower, and multiple oblique plug-in mixers installed on the tower wall of the lower oxidation zone continuously stir the slurry. Through repeated fusion reactions between the slurry and the flue gas, stirring of the stirrer at the bottom of the tower and oxidation by the input compressed air, the gypsum slurry with CaSO4·2H2O as the main component is gradually crystallized. The gypsum slurry is then pumped to the filter by a slurry discharge pump that is resistant to acid and alkali corrosion for dehydration and filtration to form gypsum. In order to quickly separate the water in the gypsum slurry for recycling.

[0004] After checking, the disclosure (announcement) number: CN209501293U discloses a gypsum slurry pipeline filtering and slag discharge device. This technology discloses "including a filter box, a slurry inlet pipeline, a slurry discharge pipeline and a slag discharge pipeline. The filter box is provided with a filter plate, and the filter partition is provided with a filter hole. The filter plate is arranged along the diagonal of the filter box, and the filter box is divided into a slurry inlet area located in the lower half of the filter box and a slurry outlet area located in the upper half of the filter box. The slurry inlet pipeline is connected to the slurry inlet area, the slurry outlet pipeline is connected to the slurry outlet area, and the slag discharge pipeline is connected to the bottom of the filter box, and has the technical effects of rapid dehydration and filtration to form gypsum with economic benefits and utilization value, and the debris blocked at the bottom of the slurry inlet area of ​​the filter box only needs to be discharged through the slag discharge pipe regularly";

[0005] When the above design is used, although it can filter out the particles in the slurry, the block crystals falling off the tower wall, and the individual debris falling off the equipment and the anti-corrosion layer, the impurities blocked by the filter cannot be cleaned in time by filtering the impurities through the filter. In addition, due to the viscosity of the slurry, the impurities are not easy to be discharged from the slag discharge port. The impurities in the slurry are easy to accumulate on the surface of the filter, blocking the mesh of the filter, thereby affecting the slurry conveying efficiency.

[0006] In order to solve the above problems, the present application proposes a gypsum discharge pump outlet pipe structure. Utility Model Content

[0007] In order to solve the problems raised in the above background technology, the utility model provides a gypsum discharge pump outlet pipeline structure, which can filter and transport impurities in the slurry to avoid impurities accumulating and clogging the filter screen, and has the characteristics of high practicality.

[0008] To achieve the above object, the utility model provides the following technical solutions: a gypsum discharge pump outlet pipeline structure, comprising a slurry pump and a delivery pipe fixedly connected to the input end of the slurry pump, one end of the delivery pipe is provided with a filter assembly;

[0009] The filter assembly includes a filter box fixedly connected to one side of the conveying pipe, an arc-shaped filter screen installed inside the filter box, and a fixed frame fixedly connected to the inside of the filter box. A rotating shaft is rotatably connected to the surface of the fixed frame, a conveying auger is fixedly connected to the surface of the rotating shaft, and the size of the conveying auger matches the arc-shaped filter screen.

[0010] As a preferred outlet pipe structure of a gypsum discharge pump of the utility model, a slurry discharge pipe is fixedly connected to the bottom of the filter box, a slag discharge barrel is fixedly connected to the side of the filter box away from the conveying pipe, and a slag discharge pipe is fixedly connected to the surface of the slag discharge barrel.

[0011] As a preferred outlet pipe structure of a gypsum discharge pump of the utility model, a scraper in a ring array is fixedly connected to one side of the rotating shaft surface close to the slag discharge barrel.

[0012] As a preferred outlet pipe structure of a gypsum discharge pump of the utility model, a motor is fixedly mounted on the side of the slag discharge barrel, and the output end of the motor is fixedly connected to the rotating shaft, and a sealing gasket is provided between the rotating shaft and the slag discharge barrel.

[0013] As a preferred outlet pipe structure of a gypsum discharge pump of the utility model, a maintenance assembly is provided on the surface of the filter box, and the maintenance assembly includes a fixed door installed on the front end surface of the filter box and a mounting seat fixedly connected to the four corners of the surface of the fixed door, and a bolt groove is provided on the side of the filter box surface close to the mounting seat.

[0014] As a preferred outlet pipe structure of a gypsum discharge pump of the utility model, a sealing ring gasket is fixedly connected to a side of the fixed door surface close to the filter box.

[0015] Compared with the prior art, the utility model has the following beneficial effects: by setting up a filtering component, the slurry entering the filter box can be filtered through the arc filter, and the impurities filtered on the surface of the arc filter can be transported through the conveying auger, and the motor drives the conveying auger to rotate at a slower speed, thereby improving the filtering effect of the arc filter on the slurry, and the conveyed impurities can be pushed into the slag discharge pipe through the scraper, which is convenient for subsequent processing. At the same time, a maintenance component is set, and the filter box can be opened by disassembling the fixed door, which is convenient for cleaning or replacing the arc filter and the conveying auger inside the filter box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a cross-sectional view of the filter box in the utility model;

[0019] Figure 3 It is a structural schematic diagram of the fixed door and the filter box in the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the scraper and the slag discharge pipe in the utility model.

[0021] In the figure:

[0022] 1. Slurry pump; 2. Delivery pipe;

[0023] 3. Filter assembly; 31. Filter box; 32. Slag discharge pipe; 33. Motor; 34. Slurry discharge pipe; 35. Rotating shaft; 36. Conveying auger; 37. Scraper; 38. Curved filter screen; 39. Fixed frame; 310. Slag discharge cylinder;

[0024] 4. Maintenance assembly; 41. Fixed door; 42. Sealing ring gasket; 43. Mounting seat. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1

[0027] like Figure 1 As shown:

[0028] A gypsum discharge pump outlet pipeline structure comprises a slurry pump 1 and a delivery pipe 2 fixedly connected to the input end of the slurry pump 1.

[0029] In this embodiment: the existing disclosure (announcement) number: CN209501293U discloses a gypsum slurry pipeline filtering and slag discharge device; in order to solve the technical problems existing in this prior art, as disclosed in the background technology above, "although it is possible to filter the particulate matter in the slurry, the block crystals falling from the tower wall, and the individual debris dropped from the equipment and the anti-corrosion layer, the impurities are filtered through the filter screen, and the impurities blocked by the filter screen cannot be cleaned in time, and because the slurry is viscous, the impurities are not easy to be discharged from the slag discharge port, and the impurities in the slurry are easily accumulated on the surface of the filter screen, clogging the mesh on the filter screen, thereby affecting the slurry transportation efficiency". In terms of combined use, this problem is obviously a real problem that exists and is relatively difficult to solve. In view of this, in order to solve this technical problem, a filter component 3 and a maintenance component 4 are added to the present application document.

[0030] More specifically:

[0031] like Figure 1-Figure 4 As shown:

[0032] In combination with the above content, the filter assembly 3 includes a filter box 31 fixedly connected to one side of the conveying pipe 2, an arc-shaped filter screen 38 installed inside the filter box 31, and a fixed frame 39 fixedly connected to the inside of the filter box 31, the surface of the fixed frame 39 is rotatably connected to a rotating shaft 35, the surface of the rotating shaft 35 is fixedly connected to a conveying auger 36, and the size of the conveying auger 36 matches the arc-shaped filter screen 38.

[0033] In this embodiment: when the slurry pump 1 conveys the gypsum slurry produced by desulfurization to the inside of the filter box 31 through the conveying pipe 2, the arc filter 38 can then filter the slurry entering the inside of the filter box 31, and the gypsum slurry will be subjected to the pressure of the slurry pump 1 and discharged from the slurry discharge pipe 34 through the mesh holes on the arc filter 38, and then the rotating shaft 35 is driven to drive the conveying auger 36 to rotate, and the conveying auger 36 will convey the impurities filtered on the surface of the arc filter 38 to prevent the impurities from accumulating on the surface of the arc filter 38 and clogging the arc filter 38.

[0034] Going further:

[0035] like Figure 1-Figure 4 As shown:

[0036] In order to facilitate the discharge of filtered impurities, in an optional embodiment: a slurry discharge pipe 34 is fixedly connected to the bottom of the filter box 31, a slag discharge barrel 310 is fixedly connected to the side of the filter box 31 away from the conveying pipe 2, and a slag discharge pipe 32 is fixedly connected to the surface of the slag discharge barrel 310; a scraper 37 in a circular array is fixedly connected to the side of the rotating shaft 35 close to the slag discharge barrel 310; a motor 33 is fixedly installed on the side of the slag discharge barrel 310, and the output end of the motor 33 is fixedly connected to the rotating shaft 35, and a sealing gasket is arranged between the rotating shaft 35 and the slag discharge barrel 310.

[0037] In this embodiment: when the slurry pump 1 conveys the gypsum slurry produced by desulfurization to the inside of the filter box 31 through the conveying pipe 2, the arc filter 38 can filter the slurry entering the inside of the filter box 31, and the gypsum slurry will be subjected to the pressure of the slurry pump 1 and discharged from the slurry discharge pipe 34 through the mesh holes on the arc filter 38. Then the motor 33 is started to drive the rotating shaft 35 to rotate, and the rotating shaft 35 will drive the conveying auger 36 to rotate. The impurities filtered on the surface of the arc filter 38 are conveyed by the conveying auger 36 to the inside of the slag discharge barrel 310 to prevent the accumulation of impurities on the surface of the arc filter 38 and clogging the arc filter 38. At the same time, the rotation of the rotating shaft 35 will drive the scraper 37 to rotate, and the scraper 37 will push the impurities inside the slag discharge barrel 310 and push them into the slag discharge pipe 32 for discharge, thereby separating and discharging the impurities in the gypsum slurry.

[0038] It should be noted that the motor 33 and the slurry pump 1 are both electrically connected to an external power source via wires.

[0039] More specifically:

[0040] like Figure 1-Figure 4 As shown:

[0041] In combination with the above content, a maintenance component 4 is provided on the surface of the filter box 31, and the maintenance component 4 includes a fixed door 41 installed on the front end surface of the filter box 31 and a mounting seat 43 fixedly connected to the four corners of the surface of the fixed door 41, and a bolt groove is provided on the side of the surface of the filter box 31 close to the mounting seat 43; a sealing ring gasket 42 is fixedly connected to the side of the surface of the fixed door 41 close to the filter box 31.

[0042] In this embodiment: when it is necessary to clean or replace the equipment inside the filter box 31, the fixed door 41 can be removed by removing the bolts on the mounting seat 43, and the fixed door 41 can be installed by inserting the bolts into the mounting seat 43 and tightening them with the bolt holes on the filter box 31, and then the arc filter 38 and the conveying auger 36 can be cleaned or replaced, and the sealing effect of the fixed door 41 installation can be increased by the sealing ring gasket 42 to prevent slurry from seeping out.

[0043] It should be noted that the delivery pipe 2 is a steel pipe lined with polytetrafluoroethylene, which improves the wear resistance and corrosion resistance of the pipe, reduces the wear of the inner wall of the pipe caused by the flow of slurry, and increases the service life of the pipe.

[0044] Working principle: When the slurry pump 1 transports the gypsum slurry produced by desulfurization to the inside of the filter box 31 through the conveying pipe 2, the arc filter 38 can filter the slurry entering the filter box 31. The gypsum slurry will be subjected to the pressure of the slurry pump 1 and discharged from the slurry discharge pipe 34 through the mesh holes on the arc filter 38. Then the motor 33 is started to drive the rotating shaft 35 to rotate. The rotating shaft 35 will drive the conveying auger 36 to rotate. The impurities filtered on the surface of the arc filter 38 are transported by the conveying auger 36 to the inside of the slag discharge barrel 310 to prevent the impurities from accumulating on the surface of the arc filter 38 and clogging the arc filter 38. At the same time, the rotating shaft 35 rotates It will drive the scraper 37 to rotate, and the scraper 37 will push the impurities inside the slag discharge barrel 310 and push them into the slag discharge pipe 32 for discharge, so as to separate and discharge the impurities in the gypsum slurry. When it is necessary to clean or replace the equipment inside the filter box 31, the fixed door 41 can be disassembled by removing the bolts on the mounting seat 43, and the fixed door 41 can be installed by inserting the bolts into the mounting seat 43 and tightening them with the bolt holes on the filter box 31, and then the arc filter 38 and the conveying auger 36 can be cleaned or replaced, and the sealing effect of the fixed door 41 installation can be increased by the sealing ring gasket 42 to prevent slurry seepage.

[0045] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention to solve the problems raised in the above background technology.

Claims

1. A gypsum discharge pump outlet pipeline structure, comprising a slurry pump (1) and a delivery pipe (2) fixedly connected to the input end of the slurry pump (1), Features: A filter assembly (3) is provided at one end of the delivery pipe (2); The filter assembly (3) comprises a filter box (31) fixedly connected to one side of the conveying pipe (2), an arc-shaped filter screen (38) installed inside the filter box (31), and a fixed frame (39) fixedly connected inside the filter box (31); a rotating shaft (35) is rotatably connected to the surface of the fixed frame (39); a conveying auger (36) is fixedly connected to the surface of the rotating shaft (35); and the size of the conveying auger (36) matches the arc-shaped filter screen (38).

2. The gypsum discharge pump outlet pipe structure according to claim 1, Features: The bottom of the filter box (31) is fixedly connected to a slurry discharge pipe (34), the side of the filter box (31) away from the conveying pipe (2) is fixedly connected to a slag discharge cylinder (310), and the surface of the slag discharge cylinder (310) is fixedly connected to a slag discharge pipe (32).

3. The gypsum discharge pump outlet pipe structure according to claim 2, Features: A scraper (37) in an annular array is fixedly connected to one side of the surface of the rotating shaft (35) close to the slag discharge barrel (310).

4. The gypsum discharge pump outlet pipe structure according to claim 3, Features: A motor (33) is fixedly mounted on the side of the slag discharge barrel (310), and an output end of the motor (33) is fixedly connected to the rotating shaft (35), and a sealing gasket is provided between the rotating shaft (35) and the slag discharge barrel (310).

5. The gypsum discharge pump outlet pipe structure according to claim 1, Features: A maintenance assembly (4) is provided on the surface of the filter box (31), and the maintenance assembly (4) comprises a fixed door (41) installed on the front end surface of the filter box (31) and mounting seats (43) fixedly connected to the four corners of the surface of the fixed door (41), and a bolt groove is provided on one side of the surface of the filter box (31) close to the mounting seat (43).

6. The gypsum discharge pump outlet pipe structure according to claim 5, Features: A sealing ring gasket (42) is fixedly connected to a side of the surface of the fixed door (41) close to the filter box (31).

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