Sludge pre-drying equipment

Abstract

The utility model discloses sludge pre-drying equipment, which comprises an extrusion mechanism, a hot air piece and a plurality of stirring rods, the extrusion mechanism comprises an extrusion cylinder, a rotating rod, a first spiral blade and a driving piece, one end of the extrusion cylinder is provided with a feed port, the other end of the extrusion cylinder is provided with a discharge port, and the rotating rod is coaxially and rotatably arranged in the extrusion cylinder. The first spiral blade is fixedly connected with the rotating rod, the driving part is connected with one end of the rotating rod and used for driving the rotating rod to rotate, a plurality of air inlet pipes are further arranged on the extrusion barrel in the axis direction at intervals and communicate with the hot air part, the hot air part is used for conveying hot air flow into the extrusion barrel, and the multiple stirring rods are arranged in the extrusion barrel. And the plurality of stirring rods are fixedly arranged on the first spiral blade at intervals along the spiral direction of the first spiral blade. The problems of non-uniform heating and poor drying effect during sludge drying in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of drying equipment, in particular to a sludge pre-drying equipment. Background Art

[0002] Sludge pre-drying is an important link in the sludge treatment process. It mainly reduces the moisture content in the sludge through certain technical means and equipment to meet the requirements of subsequent treatment or disposal. Pre-drying can adopt various methods, such as natural drying, thermal drying (such as using hot air, steam, etc.). For example, in the patent document with the existing patent application number 202220861656.2, a device for conveying dried sludge of a sludge dryer is disclosed, which can dry the sludge while conveying it.

[0003] In the prior art, when drying sludge with hot air flow, during the conveying process of the sludge, since only the surface sludge can contact the hot air flow, the sludge and the hot air flow are unevenly heated, and it is easy to have a poor sludge drying effect. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above technical deficiencies, provide a sludge pre-drying equipment, and solve the problems of uneven heating and poor drying effect of sludge during drying in the prior art.

[0005] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a sludge pre-drying equipment, including an extrusion mechanism, a hot air component and a plurality of stirring rods. The extrusion mechanism includes an extrusion barrel, a rotating rod, a first spiral blade and a driving component. One end of the extrusion barrel is provided with a feed inlet, and the other end is provided with a discharge outlet. The rotating rod is coaxially and rotatably arranged in the extrusion barrel. The first spiral blade is fixedly connected with the rotating rod. The driving component is connected with one end of the rotating rod, and the driving component is used to drive the rotating rod to rotate. The extrusion barrel is also provided with a plurality of air inlet pipes at intervals along the axial direction. The plurality of air inlet pipes are all communicated with the hot air component, and the hot air component is used to convey hot air flow into the extrusion barrel. The plurality of stirring rods are all arranged in the extrusion barrel, and the plurality of stirring rods are fixedly arranged on the first spiral blade at intervals along the spiral direction of the first spiral blade.

[0007] In some embodiments, a sleeve is coaxially arranged at one end of the extrusion barrel. The sleeve is communicated with the extrusion barrel, and the feed inlet is communicated with the sleeve. The inner diameter of the sleeve is smaller than the inner diameter of the extrusion barrel. One end of the rotating rod passes through the rotating rod and is connected with a second spiral blade.

[0008] In some embodiments, the blanking mechanism connected to the feed inlet includes a blanking cylinder and a vibrator. The blanking cylinder is movably connected to the feed inlet via a plurality of elastic members, and the discharge port at the bottom end of the blanking cylinder communicates with the feed inlet. The vibrator is fixedly connected to the blanking cylinder.

[0009] In some embodiments, the blanking mechanism further includes a rotating shaft, a scraper, and a reduction motor. The reduction motor is fixedly provided at the top of the blanking cylinder. The rotating shaft is coaxially arranged inside the blanking cylinder and fixedly connected to the output end of the reduction motor. The scraper is fixedly connected to the rotating shaft via a connecting rod, and the scraper is in contact with the inner wall of the blanking cylinder.

[0010] In some embodiments, the inner diameter of the lower end of the blanking cylinder is arranged to be reduced. The scraper includes a vertical section and a bent end connected to the vertical section. The vertical section and the bent end are respectively in contact with the inner side wall and the inner bottom wall of the blanking cylinder.

[0011] In some embodiments, the blanking mechanism further includes a third spiral blade. The lower end of the rotating shaft extends into the feed inlet, and the third spiral blade is fixedly provided at the lower end of the rotating shaft.

[0012] In some embodiments, an exhaust pipe is further provided at one end of the extrusion cylinder.

[0013] In some embodiments, the hot air member includes a blower, a hot air cylinder, and a plurality of heating battery cells. The blower is communicated with the hot air cylinder. The hot air cylinder is communicated with each of the intake pipes via a guide pipe. The plurality of heating battery cells are fixedly arranged inside the hot air cylinder along the axial direction.

[0014] In some embodiments, a control valve is provided on each of the intake pipes.

[0015] In some embodiments, the driving member includes a motor and a speed reducer. The output end of the motor is connected to the speed reducer, and the speed reducer is connected to one end of the rotating rod.

[0016] Compared with the prior art, a sludge pre-drying device provided by the present utility model has a feed inlet provided at one end of an extrusion barrel and a discharge outlet provided at the other end. A rotating rod is coaxially and rotatably arranged inside the extrusion barrel. A first spiral blade is fixedly connected to the rotating rod. A driving member is connected to one end of the rotating rod, and the driving member is used to drive the rotating rod to rotate. The extrusion barrel is also provided with a plurality of air inlet pipes at intervals along the axial direction, and the plurality of air inlet pipes are all communicated with a hot air member. The hot air member is used to convey hot air flow into the extrusion barrel, which can effectively ensure that the hot air flow can be evenly dispersed into the extrusion barrel. At the same time, a plurality of stirring rods are arranged inside the extrusion barrel, and the plurality of stirring rods are fixedly arranged on the first spiral blade at intervals along the spiral direction of the first spiral blade. When the first spiral blade rotates, the plurality of stirring rods can stir the sludge, ensuring that the sludge can be evenly heated with the hot air flow inside the extrusion barrel, and effectively improving the drying effect of the sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. 6 is a schematic structural diagram of a sludge pre-drying device provided by an embodiment of the present utility model;

[0018] Figure 2 FIG. 10 is a schematic internal structure diagram of the extrusion barrel provided by an embodiment of the present utility model;

[0019] Figure 3 FIG. 14 is a schematic internal structure diagram of the blanking barrel provided by an embodiment of the present utility model;

[0020] Figure 4 FIG. 18 is a schematic internal structure diagram of the hot air barrel provided by an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] In order to solve the technical problems of uneven heating and poor drying effect during sludge drying in the prior art, the present utility model provides a sludge pre-drying device, which can ensure uniform heating of the sludge and improve the heating efficiency of the sludge.

[0023] Please refer to Figures 1 - 4 , Figures 1 - 4A sludge pre-drying device in an embodiment of the present utility model includes an extrusion mechanism 1, a hot air component 2, and a plurality of stirring rods 3. The extrusion mechanism 1 includes an extrusion barrel 11, a rotating rod 12, a first spiral blade 13, and a driving component 14. One end of the extrusion barrel 11 is provided with a feed inlet, and the other end is provided with a discharge outlet. The rotating rod 12 is coaxially and rotatably arranged inside the extrusion barrel 11. The first spiral blade 13 is fixedly connected to the rotating rod 12. The driving component 14 is connected to one end of the rotating rod 12. The driving component 14 is used to drive the rotating rod 12 to rotate. The extrusion barrel 11 is also provided with a plurality of air inlet pipes 110 at intervals along the axial direction. The plurality of air inlet pipes 110 are all communicated with the hot air component 2. The hot air component 2 is used to convey hot air flow into the extrusion barrel 11. The plurality of stirring rods 3 are all arranged inside the extrusion barrel 11, and the plurality of stirring rods 3 are fixedly arranged on the first spiral blade 13 at intervals along the spiral direction of the first spiral blade 13.

[0024] In this specific embodiment, a sleeve 111 is coaxially arranged at one end of the extrusion barrel 11. The sleeve 111 is communicated with the extrusion barrel 11, and the feed inlet is communicated with the sleeve 111. The inner diameter of the sleeve 111 is smaller than the inner diameter of the extrusion barrel 11. One end of the rotating rod 12 passes through the rotating rod 12 and is connected to a second spiral blade 15.

[0025] In this specific embodiment, the driving component 14 includes a motor 141 and a speed reducer 142. The output end of the motor 141 is connected to the speed reducer 142. The speed reducer 142 is connected to one end of the rotating rod 12.

[0026] On the basis of the above solution, in order to improve the feeding efficiency of the sludge, specifically, a feeding mechanism 4 is connected to the feed inlet. The feeding mechanism 4 includes a feeding barrel 41 and a vibrating component. The feeding barrel 41 is movably connected to the feed inlet via a plurality of elastic components, and the discharge port at the bottom end of the feeding barrel 41 is communicated with the feed inlet. The vibrating component is fixedly connected to the feeding barrel 41.

[0027] It should be noted that after the sludge is conveyed to the feeding barrel 41, the feeding barrel 41 can be vibrated by an exciter 42. In this specific embodiment, the vibrating component is two exciters 42 fixedly arranged on opposite sides of the feeding barrel 41.

[0028] Based on the above solution, in order to prevent sludge from adhering to the inner wall of the blanking cylinder 41 and being difficult to clean, specifically, the blanking mechanism 4 further includes a rotating shaft 43, a scraping plate 44, and a reduction motor 45. The reduction motor 45 is fixedly arranged at the top of the blanking cylinder 41. The rotating shaft 43 is coaxially arranged inside the blanking cylinder 41 and fixedly connected to the output end of the reduction motor 45. The scraping plate 44 is fixedly connected to the rotating shaft 43 via a connecting rod, and the scraping plate 44 is in contact with the inner wall of the blanking cylinder 41.

[0029] In this specific embodiment, the inner diameter of the lower end of the blanking cylinder 41 is set to be reduced. The scraping plate 44 includes a vertical section 441 and a bent end 442 connected to the vertical section 441. The vertical section 441 and the bent end 442 are respectively in contact with the inner side wall and the inner bottom wall of the blanking cylinder 41.

[0030] Based on the above solution, the blanking mechanism 4 further includes a third spiral blade 46. The lower end of the rotating shaft 43 extends into the feed port, and the third spiral blade 46 is fixedly arranged at the lower end of the rotating shaft 43. It should be noted that by providing the third spiral blade 46, the situation of sludge clogging at the feed port can be avoided.

[0031] In this specific embodiment, an exhaust pipe 112 is further provided at one end of the extrusion cylinder 11. In addition, in other embodiments, the exhaust pipe 112 can also be connected to other dust collection devices.

[0032] In this specific embodiment, the hot air member 2 includes a fan 21, a hot air cylinder 22, and a plurality of heating battery cores 23. The fan 21 is communicated with the hot air cylinder 22. The hot air cylinder 22 is communicated with each of the air inlet pipes 110 via a guide pipe. The plurality of heating battery cores 23 are fixedly arranged inside the hot air cylinder 22 along the axial direction.

[0033] In addition, a control valve 24 is provided on each of the air inlet pipes 110.

[0034] It should be noted that the fan 21 conveys the air flow into the hot air cylinder 22, and the plurality of heating battery cores 23 can heat the air flow. The heated air flow is conveyed into the extrusion cylinder 11 via each of the air inlet pipes 110.

[0035] To better understand the present invention, the following Figures 1 to 4 details the technical solution of the present invention:

[0036] The sludge is conveyed into the extrusion cylinder 11 through the feed inlet. The driving member 14 drives the rotating rod 12 to rotate around its own axis, thereby driving the first spiral blade 13 and multiple stirring rods 3 to rotate. During the process of the first spiral blade 13 pushing the sludge from the feed inlet to the discharge outlet, the multiple stirring rods 3 stir the sludge, which can improve the fluidity of the sludge. At the same time, the hot air member 2 conveys hot air flow into the extrusion cylinder 11, so that the sludge can be in full contact with the hot air flow and be evenly heated.

[0037] The specific embodiments of the present invention described above do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A sludge pre-drying device, comprising an extrusion mechanism, a hot air component and a plurality of stirring rods, wherein the extrusion mechanism comprises an extrusion barrel, a rotating rod, a first spiral blade and a driving component, wherein one end of the extrusion barrel is provided with a feed port and the other end is provided with a discharge port, the rotating rod is coaxially and rotatably arranged in the extrusion barrel, the first spiral blade is fixedly connected to the rotating rod, the driving component is connected to one end of the rotating rod, and the driving component is used to drive the rotating rod to rotate, characterized in that: The extrusion barrel is also provided with a plurality of air inlet pipes at intervals along the axial direction, and the plurality of air inlet pipes are all connected to the hot air component, and the hot air component is used to transport a hot air flow into the extrusion barrel. The plurality of stirring rods are all arranged in the extrusion barrel, and the plurality of stirring rods are fixed on the first spiral blade at intervals along the spiral direction of the first spiral blade.

2. The sludge pre-drying equipment according to claim 1, characterized in that: A sleeve is coaxially arranged at one end of the extrusion barrel, the sleeve is connected to the extrusion barrel, and the feed port is connected to the sleeve, the inner diameter of the sleeve is smaller than the inner diameter of the extrusion barrel, and one end of the rotating rod is penetrated into the rotating rod and connected to the second spiral blade.

3. The sludge pre-drying equipment according to claim 1, characterized in that: The feed port is connected to a feeding mechanism, which comprises a feeding barrel and a vibrator. The feeding barrel is movably connected to the feed port via a plurality of elastic parts, and a discharge port at the bottom end of the feeding barrel is connected to the feed port. The vibrator is fixedly connected to the feeding barrel.

4. The sludge pre-drying equipment according to claim 3, characterized in that: The unloading mechanism also includes a rotating shaft, a scraper and a reduction motor. The reduction motor is fixedly arranged at the top of the unloading barrel. The rotating shaft is coaxially arranged in the unloading barrel and fixedly connected to the output end of the reduction motor. The scraper is fixedly connected to the rotating shaft via a connecting rod, and the scraper is in contact with the inner wall of the unloading barrel.

5. The sludge pre-drying equipment according to claim 4, characterized in that: The inner diameter of the lower end of the lower barrel is reduced, and the scraper includes a vertical section and a bent end connected to the vertical section. The vertical section and the bent end are in contact with the inner side wall and the inner bottom wall of the lower barrel respectively.

6. The sludge pre-drying equipment according to claim 5, characterized in that: The feeding mechanism further includes a third spiral blade. The lower end of the rotating shaft extends into the feeding port. The third spiral blade is fixedly arranged at the lower end of the rotating shaft.

7. The sludge pre-drying equipment according to claim 1, characterized in that: One end of the extrusion barrel is also provided with an exhaust pipe.

8. The sludge pre-drying equipment according to claim 1, characterized in that: The hot air component includes a fan, a hot air cylinder and a plurality of heating cells. The fan is connected to the hot air cylinder, and the hot air cylinder is connected to each of the air inlet pipes via an air guide pipe. The plurality of heating cells are fixed in the hot air cylinder along the axial direction.

9. The sludge pre-drying equipment according to claim 8, characterized in that: Each of the air inlet pipes is provided with a control valve.

10. The sludge pre-drying equipment according to claim 1, characterized in that: The driving member includes a motor and a reducer, the output end of the motor is connected to the reducer, and the reducer is connected to one end of the rotating rod.

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