Discovering Oracle: Perspective and Writing of Archaeological History

2020-02-23 05:05:57

【Abstract】Based on several misunderstandings of the Anyang oracle bone found in the article of “Huaxia Archaeology”, it is proposed that the discovery of oracle bones is not a discovery in a behavioral sense, but a discovery in a cognitive sense. The discovery of the bones of the oracle bone was not completed by a specific scholar at one time, but consisted of three links: Liu Yun's "Iron Cloud Treasure", Sun Yirang's "Titus Case" and Luo Zhenyu's "Inscription of the Yin Ruins". The discussion of the oracle bones should not exclude the antique hackers and the antique market. The status of the antique dealers in the early distribution and collection of the oracle bones in Anyang is proof that there is a “pre-oracle bone age” in the oracle bone collection. Therefore, the discussion of academic history discovered by the Oracle bones helps us to reflect on the understanding and writing of Chinese archaeological history.

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Naipu SP metal Vertical Slurry Pumps  are vertical, centrifugal slurry pumps submerged in sump to work.They are designed for delivering abrasive,large particle and high density slurries.These pumps have no need of any shaft seal and sealing water. They can also be operated normally for insufficient suction duties.Wet parts of type NP-SP pump are made of abrasion-resistant metal. All parts of type NP-SP(R) pump immersed in liquid are lined with rubber outer liner.They are suited to transport non-edge angle abrasive slurry.

Typical Applications---

Sump drainage washdown
Floor drainage
Mill sumps
Carbon transfer
Monitoring

Magnetite mixing

Showing Component

Main Part Number At The Drawing
 

1.Discharge Pipe
2.Column
3.Strainer
4.Back Liner
5.Impeller
6.Pump Casing
7.Lower Pipe


Materials of Construction
 

 

IMPELLERS

CASING

COLUMN

DISCHARGE

SEALS

Standard

High Chrome Alloy  Rubber

High Chrome Alloy  Rubber

Mild Steel
Mild Steel Rubber Lined

Mild Steel
Mild Steel Rubber Lined

Natural Rubber
Rubber

Options

Butyl
EPDM
Hypalon
Polyurethane
316 SS
W 151

Neoprene
Butyl
EPDM
Hypalon
Nitrile
316 SS
W 151

Neoprene
Butyl
Nitrile
316 SS

Neoprene
Butyl
Nitrile
316 SS

Nordel
Neoprene
Viton
Hypalon
Butyl
EPDM

Selection Chart

Selection Chart


NP-SP SUMP PUMP PERFORMANCE PARAMETERS


 

Type

Allowable Mating Max. Power(Kw)

Range  Of  Performance

Impeller

Capacity/Q

Head/m

Speed/rpm

Max Efficiency/%

No. of Vanes

Impeller Diameter/mm

m³/hr

L/S

40PV-NP-SP

15

19.44-43.2

5.4-12

4.5-28.5

1000-2200

40

5

188

65QV-NP-SP

30

23.4-111

6.5-30.8

5-29.5

700-1500

50

5

280

100RV-NP-SP

75

54-289

15-80.3

5-35

500-1200

56

5

370

150SV-NP-SP

110

108-479.16

30-133.1

8.5-40

500-1000

52

5

450

200SV-NP-SP

110

189-891

152.5-247.5

6.5-37

400-850

64

5

520

250TV-NP-SP

200

261-1089

72.5-302.5

7.5-33.5

400-750

60

5

575

300TV-NP-SP

200

288-1267

80-352

6.5-33

350-700

50

5

610






Sp Metal Vertical Slurry Pumps

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