Application
ZBG type peripheral driving mud scraper is applicable for scraping and drossing of radial flow (circular) sedimentation tank with large diameter （φ>15m）of water plants or sewage plants in drainage works.
Characteristics:
Simple structure, low energy consumption, convenient maintenance and management.
Smooth operation, safe and reliable work.
Excellent effect of mud scraping and collecting, low water content of discharged sludge.
Structure and operational principle
Peripheral driving mud scraper is mainly composed of center rotary support, main beam (trussed beam, folded plate beam), flow guiding cylinder, scraping and skimming plate, current collecting device, drive mechanism.
Raw water flows from the bottom of the pond to top of central buttress, after water distribution of flow guiding cylinder, the water flows into the water collecting tank around the pond radially. As the decrease of radial flow velocity, the suspended substances in raw water are separated and sedimented to the bottom of the pond. The rotary truss is centered around the center support. Under the action of drive device, the end travelling wheel revolves around the pond to drive the lower scraping plate to rotate slowly. The sludge are collected in center mud collecting tank of sedimentation tank and will be discharged by hydrostatic pressure or pump, the upper dross will be scraped and discharged to deslagging hopper by drossing plate at the same time.
Description of types
池径（m）tank diameter
周边传动刮泥机 peripheral drive mud scraper
Specifications and main technical parameters

Type specification		ZBG-16	ZBG-18	ZBG-20	ZBG-22	ZBG-24	ZBG-25	ZBG-28	ZBG-30	ZBG-35	ZBG-37	ZBG-40
Applicable tank diameter（m）		16	18	20	22	24	25	28	30	35	37	40
Power of electric motor（kW）		1.1		1.5			2.2			3.0
Bounding line speed of scraping plate （m/min）	Primary sedimentation tank	2-3
	Secondary sedimentation tank	1.5~2.5
	D1	2800	2800	3000	3000	3500	4000	4000	4200	4200	4500	4500
	D2	1350									1400
	h1	1800
	a	1200		1400				2000				2000
	b	800		900				1000				1200
	c	280		300				320				350
	d	200								250
	h2	700		800				900			1000	1000
	e										900
Load（N）	p	39240	44145	49050	53955	58860	63765	68670	78480	93195	107910	112815
	w	44145	49050	53955	58860	63765	68670	73575	83385	98100	112815	117720

1.      导流筒current collecting device

2.      中心旋转支承座 center rotary supporting stand

3.      集泥槽 mud collecting tank

4.      刮泥板 scraping plate

5.      旋转桁架 rotary truss

6.      排渣斗 deslagging hoper

7.      集水槽 water collecting tank

8.      驱动装置 drive device

 

排水 drain  排泥 sludge discharge 螺栓8-M24 bolt 8-M24

中心平台预留孔及预埋钢板尺寸 prepared hole of center platform and size of embedded steel sheet  集泥坑尺寸 size of mud collecting hole

1.      压轮 pinch roller

2.      杠杆 lever

3.      冲水阀 flashing valve

4.      撇渣板 skimming plate

5.      排渣斗 slagging hoper

6.      支架 support

排渣管DN200 deslagging pipe DN200

图2 排渣斗安装位置图

Figure 2 location map of deslagging hopper installation

出水槽槽顶

Top of drainage tank

排渣管中心线

Center line of deslagging pipe

出水槽 drainage tank

图3 排渣斗预埋钢板尺寸图

Figure 3 size map of embedded steel sheet of deslagging hopper

Note: the height of tank is decided by users, recommended height for primary sedimentation tank is 4.5m, for secondary sedimentation tank is 4.0m, and recommended slop of tank bottom is 1/10. The data shown on the table are for half bridge, the size for ordinary and structure condition are for reference only.

2. Full bridge peripheral drive mud scraper has the service bridge across the tank diameter, two sets of symmetrical drive mechanisms and scraping plat devices are placed on two sides of the truss.

3. Special specifications and improved type for the treatment of industrial wastewater treatment from ore dressing and coal dressing industries are designed according to the requirements.

4. Specify the requirements for material, anti-corrosion and electrical control of the equipment.