This series of pumps:

Flow range: 3.5-600m/h

Lift range: 10-129m

Supporting power: 0.75-90kW

Speed: 1480r/min and 2960r/min

Maximum working pressure: ≤1.6MPa

Medium temperature:-15°C-110C

Ambient temperature: maximum not exceeding 40℃

If the customer’s requirements exceed the above parameter range, special supply can be provided through negotiation.

1. Basic material types

Casting material of current-passing parts: ZG0Cr18Ni9 or ZG0Cr17Ni12Mo2, etc. The above materials are the normal supply materials of our company’s chemical pumps. All materials within the above material range can be supplied according to the normal production cycle.

2. Available material types (see table below)

Casting material of flow-passing parts:

3.Special types of materials

Sometimes, according to the user’s usage conditions, the above materials cannot meet the usage requirements. In this case, negotiation between both parties is required, and the material type needs to be specifically determined.

Instructions for selecting special materials:

ZG1Cr13 and 2Cr13 stainless steel have good corrosion resistance in the atmosphere and water vapor, and can be used in fresh water, sea water, salt water solutions of a certain temperature, nitric acid, food media, and organic acids, organic compounds, salts, alkali and oils with low concentrations. Also has sufficient corrosion resistance. However, the corrosion resistance is very low in sulfuric acid, hydrochloric acid, hot phosphoric acid, hot nitric acid, and molten alkali.

ZG0Cr18Ni9 and 0Cr18Ni9 have better corrosion resistance than pure chromium steel and have a wider application range.

The corrosion resistance of the above materials to different media is shown in Table 1 and Table 2 attached to the sample.

Special note: Due to the complexity and diversity of chemical media, if users have any questions when selecting materials, please consult the relevant departments of our company’s technical center or technical support department for detailed consultation.

This series of pumps uses M3N or MG1 rubber bellows mechanical seals for mechanical seals based on specific usage conditions.

Normally, M3N mechanical seals are widely used. It has high stability and good reliability, and is suitable for cleaning media without impurity particles. Mechanical seals can be used in some acid, alkali, salt, oil, beverage and organic chemical media applications through different combinations of materials of each component.

Mg1 type mechanical seal is the most commonly used seal. Can be used in wastewater containing particles. Not suitable for use in organic solvent media.

According to the actual situation, the materials of each component of the mechanical seal can be selected as follows:

(1) For the M3N series rotating ring materials available:

Antimony-impregnated graphite (A), resin-impregnated graphite (B), mounted pressureless sintered silicon carbide (Q12), mounted reaction sintered silicon carbide (Q22), mounted nickel-based tungsten carbide (U22), etc.

Optional stationary ring materials:

Pressureless sintered silicon carbide (Q1), reaction sintered silicon carbide (Q2), etc.

(2) For the MG1 series rotating ring materials available:

Antimony impregnated graphite (A), resin impregnated graphite (B), pressureless sintered silicon carbide (Q1), etc. The stationary ring materials can be selected from: pressureless sintered silicon carbide (Q1) and alumina ceramics (V), etc.

(3) Auxiliary seal materials can be selected from:

Ethylene-propylene rubber (E), nitrile rubber (P), fluorine rubber (V), etc.

The application temperature range of nitrile rubber is -54~+120C. It has excellent corrosion resistance to mineral oil, animal and vegetable oils and aliphatic hydrocarbons. Resistant to alkali and oxidizing dilute acid corrosion. Can be used at +100℃ for a long time. When selecting, please refer to Table 3 on the attached page of the sample.

The application temperature range of ethylene-propylene rubber is -60~+150℃. Resistant to corrosion by dilute acids, alkalis, and salts, but not resistant to corrosion by oxidizing acids, aromatic hydrocarbons, and petroleum products. When selecting, please refer to Table 4 on the attached page of the sample.

Fluorine rubber is resistant to high temperatures and has excellent corrosion resistance. Resistant to various types of acids, alkalis, salts, and petroleum products. When selecting, please refer to Table 5 in the attachment of the sample.

(4) The materials for springs and other structural parts can be selected from:

0Cr18Ni12Mo2Ti(G), 0Cr18Ni9(F), 2Cr13 or 3Cr13(F1), etc.

Chromium steel 2Cr13 or 3Cr13 is used in weakly corrosive media, and stainless steel (0Cr18Ni12Mo2Ti, 0Cr18Ni9) is used in highly corrosive media.

1. The segmented design of the pump shaft of this series of pumps fundamentally avoids corrosion damage to the motor shaft. This completely ensures the stable and reliable long-term operation of the motor.
2. This series of pumps has a reliable and novel pump shaft structure. The horizontal pump can easily use the B35 structure standard motor to directly drive the water pump, and the vertical pump can easily use the V1 structure standard motor to directly drive the water pump.
3. The pump cover and coupling frame of this series of pumps are designed as two independent parts with reasonable structure.
4. This series of pumps has a very simple structure and is easy to maintain. Once the pump shaft needs to be replaced, it is easy to disassemble and install, and the positioning is accurate and reliable.
5. The pump shaft and motor shaft of this series are rigidly connected. The advanced and reasonable processing and assembly technology makes the pump shaft have high concentricity, low vibration and low noise.
6. Compared with horizontal chemical pumps of general structure, this series of horizontal pumps has a particularly compact structure, and the unit’s floor space is greatly reduced.
7. This series of pumps adopts excellent hydraulic model design. The performance of the pump is stable and efficient.
8. The blanks of the pump body, pump cover, impeller and other parts of this series of pumps are precision cast with investment molds, with high dimensional accuracy, smooth flow channels and beautiful appearance.
9. The entire series of parts such as pump covers, shafts and coupling frames of this series of pumps has the greatest versatility.

Structure diagram (horizontal)

Structure diagram (formal)

KQH rectangular chemical pump appearance and installation dimensions

KQWH, KQWHD horizontal chemical pump appearance and installation dimensions