A concentrating and filtering centrifuge for separating ammonium sulfate slurry

Abstract

The utility model discloses a concentration and filtration centrifuge for separating ammonium sulfate slurry. A pre-concentration device is added on the basis of a screen filtration centrifuge. After the main machine outer drum starts and operates normally, the feed liquid enters the inner spiral cavity from the feed pipe. Due to the effect of the centrifugal force field, the feed liquid flows evenly from the inner cavity liquid outlet into the inner cavity of the outer drum sedimentation zone. The liquid phase overflows through the overflow port of the sedimentation zone, and the solid phase is pushed to the small end of the spiral by the differential speed between the spiral and the outer drum to enter the filter end, and then the remaining liquid in the material is filtered through the filter screen of the filter drum and discharged from the body. The solid phase is trapped on the inner side of the filter screen, and then pushed to the discharge port one by one by the spiral blades and discharged from the discharge port. The centrifuge is added with a pre-concentration device, and then filtered after concentration, so as to improve the separation efficiency and efficiently recover ammonium sulfate.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuges, in particular to a concentration and filtering centrifuge for separating ammonium sulfate slurry. Background Art

[0002] In ammonia desulfurization, the existing centrifuge for separating ammonium sulfate slurry is usually a screen filter centrifuge, that is, the solid-liquid separation of ammonium sulfate slurry is carried out by using the principle of centrifugal separation. This type of centrifuge has defects. When the crystallization of ammonium sulfate slurry is poor, the use of piston push centrifuge will result in poor separation of ammonium sulfate slurry and high discharge humidity. In severe cases, ammonium sulfate cannot be produced and the centrifuge vibrates violently. Failure to separate ammonium sulfate slurry in time will affect the stable operation of the entire desulfurization system. Utility Model Content

[0003] In order to overcome the defects of poor solid-liquid separation effect and inability to produce ammonium sulfate in the ammonium sulfate slurry separation process in the prior art, the utility model provides a horizontal centrifuge using spiral sedimentation technology, which is designed based on the technology of screen filter centrifuge and adds a pre-concentration device. Under the working condition of poor ammonium sulfate crystallization, slurry with low solid content can be efficiently separated and fine particles can be effectively recovered.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A concentrating and filtering centrifuge for separating ammonium sulfate slurry comprises a motor component, an exhaust pipe, a feed pipe, a liquid outlet, a planetary differential, a protective cover, a machine base, a main shaft transmission component, an inner spiral component, an outer drum component and a machine casing.

[0006] The above-mentioned concentrating and filtering centrifuge adopts an integrally welded centrifuge base, with a main shaft transmission component and a motor component installed on the upper part, two main bearings installed in the bearing box, and the main shaft is connected to the drum; the motor component is composed of an electric motor, a motor pulley, a motor guide rail, an adjusting bolt, etc.

[0007] In the above-mentioned concentrating and filtering centrifuge, the large end of the outer drum component is connected to the wall panel, and 6 overflow holes are evenly distributed on the wall panel. The wall panel is connected to the outer shaft and the outer shell of the differential. The drum body adopts a steel plate structure; the large end and the conical end of the body are sedimentation drums, and the small end cylindrical body is a filtering drum, which is provided with round holes and a screen is installed. One end of the inner spiral component is connected to the transmission shaft, and the feed pipe and the first washing pipe are installed therein. The liquid outlet is located below the outer drum for easy drainage, and the discharge port is located below the feed pipe.

[0008] In the above-mentioned concentrating and filtering centrifuge, the angle between the end of the feed pipe and the horizontal line is 5°.

[0009] In the above-mentioned concentration and filtration centrifuge, the outer drum component is composed of a filtration drum and a sedimentation drum. The cone angle of the filtration drum structure is 0°, and the cone angle of the sedimentation drum is 15°.

[0010] The above-mentioned concentration and filtration centrifuge has a screen installed at the filter drum, the screen structure is strip-shaped, and the screen pores are 0.08 mm.

[0011] In the above-mentioned concentrating and filtering centrifuge, one end of the spiral of the inner spiral component is connected to the output shaft of the differential, and is driven by the output shaft of the differential to rotate in the same direction as the drum, and its speed is slightly lower than that of the outer drum.

[0012] In the above-mentioned concentrating and filtering centrifuge, the differential is a planetary differential.

[0013] In the above-mentioned concentrating and filtering centrifuge, a side-opening rotating door cover component is installed in front of the casing component, the door cover and the casing are locked by a quick-opening clamping mechanism, and a sight glass with a scraper is installed on the door cover.

[0014] In the above-mentioned concentrating and filtering centrifuge, the feed pipe is a channel for the flow of feed liquid, the entire feed pipe is an arc transition, and there is no dead corner. The washing pipe is configured in two places, the first washing pipe washes the material or washes the centrifuge, and the second washing pipe washes the centrifuge.

[0015] The above-mentioned concentrating and filtering centrifuge has a rubber shock-absorbing pad installed at the lower part of the centrifuge base; and the base is installed with 8 shear-type rubber shock-absorbing pads instead of traditional anchor bolts.

[0016] The above-mentioned concentration and filtration centrifuge has a pre-concentration device added to the screen filtration centrifuge. After the main machine's outer drum starts and operates normally, the feed liquid enters the inner spiral cavity from the feed pipe. Due to the centrifugal force field, the feed liquid flows evenly from the inner cavity liquid outlet into the inner cavity of the outer drum sedimentation area. The liquid phase overflows through the sedimentation area overflow port, and the solid phase is pushed to the small end of the spiral by the differential speed between the spiral and the outer drum to enter the filter end, and then the remaining liquid in the material is filtered through the filter mesh pores at the filter end and discharged from the body. The solid phase is trapped on the inside of the filter, and then pushed to the discharge port one by one by the spiral blades, and discharged from the discharge port.

[0017] The beneficial effect of the utility model is that the concentration and filtration centrifuge of the utility model is designed by using the "centrifugal sedimentation" and "centrifugal filtration" technologies. The centrifuge can efficiently separate slurries with low solid content and effectively recover fine particles, eliminating the defects of poor separation effect of ammonium sulfate slurry, high discharge humidity, inability to produce ammonium sulfate and severe vibration of the centrifuge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the utility model;

[0020] Figure 2 For along Figure 1 Schematic diagram of the EE line;

[0021] Figure 3 It is a schematic diagram of the bottom structure of the base component;

[0022] Figure 4 It is a schematic diagram of the structure of the outer drum component and the inner spiral component;

[0023] Figure 5 Schematic diagram of the screen structure.

[0024] Legend: 1. Motor components, 2. Exhaust pipe, 3. First washing pipe, 4. Second washing pipe, 5. Feed pipe, 6. Liquid outlet, 7. Planetary differential, 8. Protective cover, 9. Machine base, 10. Main shaft transmission components, 11. Inner spiral components, 12. Outer drum components, 13. Machine casing, 14. Door cover, 15. Locking mechanism, 16. Discharge port, 17. Rubber shock pad, 18. Screen, 19. Drive shaft, 20. Blades, 21. Filter drum, 22. Sedimentation drum, 23 Sieve holes. 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. Figure 1 The centrifuge shown in the figure is a concentrating and filtering centrifuge for separating ammonium sulfate slurry, comprising a motor component 1, an exhaust pipe 2, a feed pipe 5, a liquid outlet 6, a planetary differential 7, a protective cover 8, a base 9, a main shaft transmission component 10, an inner spiral component 11, an outer drum component 12 and a casing 13. The centrifuge base 9 is integrally welded, with the main shaft transmission component 10 and the motor component 1 installed on the upper part, a rubber shock-absorbing pad 17 installed on the lower part, and a side opening installed in the front of the casing 13. The rotary door cover 14, the large end of the outer drum component 12 is connected to the wallboard, the wallboard is provided with an overflow port, the wallboard is connected to the outer shell of the planetary differential 7, the large end and the conical end of the cylinder body are the sedimentation drum 22, the small end cylindrical cylinder is the filtering drum 21, which is provided with a circular hole and a screen 18, one end of the inner spiral component is connected to the transmission shaft 19, the feed pipe 5 and the first washing pipe 3 are installed therein, the liquid outlet 6 is located below the outer drum for easy drainage, and the discharge port 16 is located below the feed pipe 5;

[0027] There are two washing pipelines. The first washing pipe 3 is used for washing the internal materials after the machine stops running. The second washing pipe 4 is used for washing the centrifuge. The base is equipped with 8 shear-type rubber vibration-damping pads 17 instead of traditional anchor bolts. The concentrated filtering centrifuge is powered by the motor component 1 to the planetary differential 7. The planetary differential 7 transmits the power to the inner spiral component 11 and the outer drum component 12 through the main shaft transmission component 10 to rotate them. The inner spiral component 11 and the outer drum component 12 have a rotation speed difference. The ammonium sulfate slurry enters the inner spiral component 11 through the feed pipe 5. The solid phase particles with a larger specific gravity are accelerated to settle on the wall of the outer drum component 12 under the action of the centrifugal field. The settled solid phase is driven by the screw conveyor blades 20 from the settling drum 22 to the filtering drum 21. The filtering drum 21 is equipped with a screen 18. After further dehydration, it is discharged to the discharge port 16; the liquid phase flows out from the liquid outlet 6; and the gas is discharged from the exhaust pipe 2. The first washing pipe 3 cleans the internal materials, and the second washing pipe 4 cleans the centrifuge. The door cover 14 is connected to the machine housing 13 through a locking mechanism 15.

[0028] Example 2

[0029] See Figure 2 , Figure 4 The first washing pipe 3 is used to clean the internal materials after the machine stops running. It is provided with 3-5 cleaning nozzles, and the nozzles face the inner wall of the inner spiral component 11. The inner wall has 8 rows of small holes, with 2-3 small holes in each row. The first flushing pipe 3 cleans the materials on the inner spiral component 11 and the outer drum component 12 through the small holes.

[0030] Example 3

[0031] See Figure 3 The base of the concentrated filtering centrifuge is equipped with eight shear-type rubber vibration-damping pads 17 to enhance the effects of seismic isolation, vibration elimination and impact resistance.

[0032] Example 4

[0033] The outer drum component 12 is composed of a filter drum 21 and a sedimentation drum 22. The filter drum 21 has a cone angle of 0° to obtain better dehydration capacity; the sedimentation drum 22 has a cone angle of 15°. The angle between the end of the feed pipe 5 and the horizontal line is 5°. The filter drum 21 is equipped with a screen 18, see Figure 5 The structure of the screen 18 is strip-shaped, and the gap between the screen holes 23 is 0.08 mm.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A concentrating and filtering centrifuge for separating ammonium sulfate slurry, comprising a motor component (1), an exhaust pipe (2), a feed pipe (5), a liquid outlet (6), a planetary differential (7), a protective cover (8), a machine base (9), a main shaft transmission component (10), an inner spiral component (11), an outer drum component (12) and a machine housing (13), characterized in that: The base (9) is of integrally welded type, with a main shaft transmission component (10) and a motor component (1) installed on the upper part, a rubber shock-absorbing pad (17) installed on the lower part, a side-opening rotary door cover (14) installed in front of the housing (13), the large end of the outer drum component (12) is connected to the wall panel, an overflow port is opened on the wall panel, and the wall panel is connected to the outer shell of the planetary differential (7), the large end and the conical end of the cylinder body are the sedimentation drum (22), the small end cylindrical cylinder is the filtering drum (21), a circular hole is opened on it and a screen (18) is installed, one end of the inner spiral component is connected to the transmission shaft (19), the feed pipe (5) and the first washing pipe (3) are installed therein, the liquid outlet (6) is located below the outer drum for easy drainage, and the discharge port (16) is located below the feed pipe (5).

2. A concentrating filter centrifuge for separating ammonium sulfate slurry according to claim 1, characterized in that Two washing pipes are provided. The first washing pipe (3) is used for washing the internal materials after the machine stops operating. The second washing pipe (4) is used for washing the centrifuge.

3. A concentrating filter centrifuge for separating ammonium sulfate slurry according to claim 1, characterized in that The base is equipped with 8 shear-type rubber shock-absorbing pads (17).

4. A concentrating filter centrifuge for separating ammonium sulfate slurry according to claim 1, characterized in that The angle between the end of the feed pipe (5) and the horizontal line is 5°.

5. A concentrating and filtering centrifuge for separating ammonium sulfate slurry according to claim 1, characterized in that The outer drum component (12) is composed of a filtering drum (21) and a settling drum (22); the filtering drum (21) has a structural cone angle of 0°, and the settling drum (22) has a cone angle of 15°.

6. A concentrating and filtering centrifuge for separating ammonium sulfate slurry according to claim 5, characterized in that A screen (18) is installed at the filter drum (21), the screen structure is strip-shaped, and the screen pore size is 0.08 mm.

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