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E-mail: sales@huitong-pump.com
Phone: +86-13730207380
WhatsApp: +8613730207380
Nanyang Industrial Zone, Anguo City, Baoding, Hebei, China
DG multistage pump
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- 产品描述
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Purpose
D-type and DC type pumps are horizontal multi-stage centrifugal pumps. It is suitable for transporting clean water (with impurities less than 1% and particle size less than 0.1 mm) and other liquids with physical and chemical properties similar to clean water. The temperature of the medium transported by the D-type pump is not greater than 80 ℃, and it is suitable for mining drainage, factories, urban water supply and other occasions. The temperature of the medium transported by DG type pump is not greater than 105 ℃, and it is suitable for small boiler feed pumps or similar hot water transportation occasions
Explanation of Model Meaning
D--series
（DG）--Single stage head (meters)155--Flow rate (meters/hour)
67--Multi stage boiler feedwater pump
9--Multi stage centrifugal water pump
Structural Description
This type of pump mainly consists of a housing part, a rotor part, a balancing mechanism, a bearing part, and sealing components.
1. Housing part
The shell part is mainly composed of the suction section, middle section, discharge section, guide vanes, bearing body, etc., which are connected by bolts. The rotation direction of the pump is clockwise when viewed from the drive end
2. Rotor section
The rotor part is mainly composed of a shaft and components such as impellers, shaft sleeves, and balance disks mounted on the shaft. The components on the shaft are fastened with flat keys and shaft sleeve nuts to integrate with the shaft, and the entire rotor is supported in the pump housing by bearings at both ends. The number of blades in the rotor component is determined based on the number of pump stages.
When using this model of pump, the shaft seal must be connected to the water seal. There are two types of water seals used: one is to use the effluent from the first stage impeller, and the other is to draw in external water. All items in Table 2 that indicate water seal connection are referenced from external water seal, while those that do not indicate water seal connection are used as water seal connection using the effluent from the first stage impeller. The tightness of the packing of the shaft seal must be appropriate, when the liquid can leak out drop by drop. When the temperature of the medium being transported is higher than 80 ℃, it is necessary to fill the water-cooled packing cover and shaft seal cooling chamber with coolant. Both the cooling water and the externally supplied water seal should be room temperature clean water, with a cooling water pressure of 1.5-3 kg/cm. The pressure of the water seal should be 0.5-1 kg/cm higher than that of the sealing chamber. The water seal and shaft seal cooling chamber of each type of pump have different positions for the water pipeline interface. The position of the pipeline interface along the axial direction is shown in the pump structure diagram.3. Balance mechanism
The balance mechanism consists of a balance ring, a balance sleeve, a balance plate, and a balance pipeline
4. Bearing section
The bearing part is mainly composed of a bearing body and bearings. This type of pump has two types of bearings: sliding bearings and circulating bearings. The bearings do not bear axial force. During the operation of the pump, the rotor part should be able to freely move axially in the pump housing, and radial ball bearings cannot be used. The bearings used in various types of pumps are shown in Table 1.
5. Apply molybdenum disulfide grease to seal the joint surfaces of the suction section, middle section, discharge section, and guide vanes in the sealing and cooling shell of the pump. The rotor and fixed parts are sealed with sealing rings, guide vanes, packing, etc. When the wear of the sealing ring and guide vane sleeve has affected the operation and performance of the pump, they should be replaced in a timely manner. When using this model, the position of the packing ring should be placed correctly. The distribution of packing and packing rings for each type of pump is shown in Table 2.Structural diagram
1. Pump coupling
2. Axis
3. Rolling bearing components
4. Packing gland
5. Inhalation section
6. Sealing ring
7. Middle section
8. Impeller
9. Guide vane
10. Guide vane sleeve
11. Tighten the bolt
12. Spit out segment
13. Balance sleeve (ring)
14. Balance disk
15. Packing box
16. Bearing
1. Bearing body
2. Inhalation section
3. Balance tube
4. Guide vane sleeve
5. Impeller
6. Guide vane
7. Sealing ring
8. Middle section
9. Spit out segment
10. Balance disk
11. Tail cover
12. Packing material
13. Type 0 sealing ring
14. Bearing components
15. Water cooled packing cover
FAQ
Q
Can you provide product repair and maintenance services?
A
Q
Product problems, how to get after-sales support?
A
Q
What is the mode of transport of goods?
A
Q
What are the payment methods?
A
Q
How to purchase your products?
A
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How to determine the price of customized products?
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No matter how complex your needs are, just tell the specific parameters, application scenarios and performance goals, and our technical team will provide you with a one-stop service from solution design to delivery to ensure that the product meets your needs by 100! Contact us today to start a customized tour.
FAQ
Q
Can you provide product repair and maintenance services?
A
Of course. We not only provide after-sales service, but also provide you with professional maintenance advice and training. Our technicians can carry out regular inspection and maintenance for your equipment, find and solve potential problems in time, extend the service life of equipment, and reduce your operating costs.
Q
Product problems, how to get after-sales support?
A
If you encounter problems in the process of using our products, you can contact our after-sales team at any time. You can feedback your questions through the after-sales consultation channel on the website, and we will respond within [specific time]. For common problems, we will guide you to solve them by phone or email; if you need on-site service, we will arrange professional and technical personnel to go to your location as soon as possible.
Q
What is the mode of transport of goods?
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We cooperate with a number of professional international freight forwarding companies, and can choose the appropriate mode of transportation according to your requirements, including sea, air, land, etc. At the time of order confirmation, we will recommend you the most cost-effective transportation plan according to the weight, volume, delivery time and other factors, and be responsible for the safe delivery of the goods to the place you specify.
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What are the payment methods?
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We accept a variety of international payment methods, such as T/T (wire transfer), L/C (letter of credit) and so on. The specific payment method can be determined through negotiation with us according to your needs and orders.
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How to purchase your products?
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You can leave your purchase requirements and contact information through the online consultation function of our foreign trade website; you can also send mail directly to our business mailbox, or call the contact number published on the website. Our business team will contact you as soon as possible after receiving the information to communicate the specific order details, including product specifications, quantity, price, delivery date, etc., and place the order after confirmation.
Q
How to determine the price of customized products?
A
The price of customized products mainly depends on the specific requirements of customization, including material selection, process complexity, accessory selection, etc. We will conduct detailed cost accounting according to your customized needs and provide you with a reasonable and competitive quotation.
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Nanyang Industrial Zone, Anguo City, Hebei Province, China