-
Products
Puede fabricar 26 series de productos, incluyendo bombas de circulación para grandes centrales eléctricas, bombas de condensación para grandes centrales eléctricas, bombas petroquímicas, bombas multietapa, bombas de aguas residuales y lodo, bombas multietapa autoequilibradas, bombas de doble succión y única etapa tipo split, y bombas centrífugas de succión simple y única etapa.
-
Cases
La elección de más de cientos de miles de clientes, cubriendo industrias como minería de carbón, metalurgia, química, energía, recursos hídricos, alimentos, municipalidades y protección ambiental, y exportando a Asia Sudeste, África, América y otros lugares.
-
Service
La empresa fue la primera en la industria en obtener las certificaciones internacionales del sistema de calidad ISO 9001:2008, del sistema de gestión ambiental ISO 14001 y del sistema de gestión de seguridad y salud ocupacional GB/T 28001, además de la certificación API 610 de la Asociación Estadounidense del Petróleo.
-
About us
La empresa, fundada en 1989, es una empresa nacional de alta tecnología integral que integra diseño, investigación y desarrollo, fabricación y servicios; actualmente es una empresa clave en la industria china de bombas centrífugas y una de las grandes fábricas especializadas.
-
Blogs
Con productos innovadores, calidad excepcional y servicios integrales, buscamos la verdad y la pragmática, avanzamos con iniciativa, y nos esforzamos por lograr el objetivo de ser "la marca líder en el campo de aplicación de bombas centrífugas en el país"! Raigada en Hunan, orientada a todo el país y hacia el mundo!
Product Center
Roots type ZBK vacuum pump
Price: 0.78-7.98 ten thousand
Power: 7.5-110kw
Rotation speed: 360-550r/imin
Pump weight: 440-3430kg
Vacuum degree: 0.053KPa
Air extraction rate: 6-75m³/min
The ZBK series of Roots vacuum pumps is characterized by its high efficiency, compact size, light weight, and energy saving, and is widely used in vacuum dehydration in the paper, food, chemical, and garment industries, as well as in smoke extraction in the tobacco industry. The suction medium can be dry air, humid air, or a mixture of gas and water, but the medium must not contain solid particles.
Product description
Product parameters
Pumping speed characteristics and power characteristics of Roots type ZBK vacuum pump set
When selecting this series of Roots vacuum pump sets, the required working capacity of the vacuum system for this product must first be known, that is, the pumping speed under the vacuum degree of use, and the appropriate model should be chosen to achieve the expected effect. However, some users do not fully master the system parameters, only knowing the required vacuum degree but not the extraction amount required at that vacuum degree. In this case, selection can be made by comparing with applications of units already used, according to the specific situation of the vacuum system, the type of paper, the extraction speed, the model, and the part of use.
Instructions:
1. P - Vacuum degree (kpa)
2. V - Pumping speed under vacuum state on the suction side (m/h)
3. N - Actual power consumed (KW)
Operating principle of Roots type ZBK vacuum pump set
The basic types of this series of Roots type ZBK vacuum pumps are horizontal and vertical, as shown in Figure 2.
The structure of the Roots type ZBK vacuum pump is shown in Figure 1, mainly composed of two ends 1, the pump body 5, and a pair of "8"-shaped rotors 3. There is a certain space between the working surfaces of these "8"-shaped rotors, and the relative position between the two rotors determines this space. Therefore, the adjustment of the space or the relative position of the two rotors is done by adjusting the relative position of the synchronizing gears. The motor drives the active rotor through a V-belt, and the other rotor is driven by the synchronizing gears so that both rotate synchronously. During operation, the volume on the suction side expands and the volume on the discharge side contracts, completing the suction and discharge action, creating the system vacuum. The outlet of the pump body has a silencing box that also stabilizes pressure, seals, and improves the working efficiency of the pump body.
Product installation:
The Roots type ZBK vacuum pump is divided into two types: with base plate and without base plate. If the user purchases the product without a base plate, they can equip the base plate and motor base rail for installation according to the dimensions provided in Figures 3, 4 and Tables 2 and 3. The base plane is determined by the user according to the dimensions of the base plate and motor base rail they have. The installation of the motor on the inlet side or outlet side depends on process and piping needs. If the user purchases the product with a base plate, it must be indicated in the order contract.
Use and maintenance:
1. Before using a new pump, check if the lubricating oil in the gearbox is suitable; the oil level should be maintained within ±2 mm of the oil level line, and lubrication should be checked regularly.
2. Before starting a newly installed pump, manually rotate the pulley to move the two rotors and confirm that there are no foreign objects inside the pump; then perform a smooth test start before normal operation.
3. Each time the pump stops for maintenance, open the drain valve before starting to remove accumulated water to avoid excessive starting load that may cause rotor shaft deformation or motor burn.
4. After prolonged operation, the gear teeth wear out. When the wear reaches a certain limit, the two rotors may collide. In this case, loosen the driving gear bolts (see Figure 1), remove the safety pins, adjust the circumferential position of the gear ring. If adjusting the ring in one direction reduces the space between the working surfaces of the rotors and causes collision, adjust in the opposite direction. Generally, the ring adjustment angle is less than 30°, until the space between the working surfaces of the rotors is approximately uniform and no collision occurs. Then tighten the gear bolts.
6. After tightening the bolts, if there are no abnormalities in operation, drill and grind the positioning pin holes and install the safety pins.
5. The gears and bearings are lubricated by oil bath; the bearing on the pulley side can be lubricated by injecting calcium-based lubricating oil through the oil hole in the bearing cover.
6. When a new pump starts operation or gears are replaced, the gear lubricating oil should be changed after about half a month of operation. Then, depending on the season, the oil type is changed; generally, motor oil number 30~40 is used. Oil is changed once per quarter and any oil leakage or spill must be avoided.
7. Because the pump inlet side is under vacuum, when the packing or oil seal fails, no external water leakage is observed during operation, but there is actually air leakage inside the pump, reducing efficiency. Therefore, proper pressure should be maintained on the gland (or oil seal pressure plate) and defective packing or oil seal ring should be replaced in time.
8. If the suction medium is air or vapor with very low moisture, the pump efficiency is low, manifested as low vacuum degree and low extraction amount. In this case, a 1/2" to 3/4" water supply pipe can be added at the pump inlet, regulating the water amount by a valve to improve the pump's working capacity. If the suction medium cannot contact water, another liquid can be used as a supplement, but not excessively to avoid energy waste. In paper machines, generally no water addition is needed, except when using a steam and water separator as in Figure 10 or when suctioning low moisture from the fabric, in which case water is added appropriately.
9. If during use the pump operates well but capacity is somewhat insufficient, it can be replaced by a higher capacity pump or increase the speed, but the speed should not exceed 600 rpm and sufficient power must be available.
Performance parameters of Roots type ZBK vacuum pump set
Model | ZBK11B | ZBK13 | ZBK15A | ZBK16 | ZBK16A | ZBK17B | ZBK17 | ZBK18A | ZBK18B | ZBK18 | ZBK18C |
Maximum pumping speed (m 3 /min) | 9 | 6 | 10 | 15 | 20 | 25 | 30 | 40 | 50 | 60 | 75 |
Speed (r 3 /min) | 400 | 400 | 450 | 400 | 550 | 340 | 400 | 360 | 460 | 550 | 550 |
Vacuum pump used (Pa) | 53.3*10 3 (equivalent to 400 mmHg) | ||||||||||
Inlet and outlet diameter (mm) | 150 | 125 | 150 | 200 | 200 | 250 | 250 | 300 | 300 | 300 | 300 |
Compatible motor (kw) | 11KW | 7.5KW | 15KW | 22KW | 30KW | 37KW | 45KW | 55KW | 75KW | 90KW | 110KW |
Weight (kg) | 600 | 440 | 540 | 940 | 940 | 1616 | 1616 | 2865 | 2865 | 2865 | 3430 |
External dimensions | 1074*580*903 | 894*580*832 | 1014*580*902 | 1040*755*1077 | 1480*875*1300 | 2205*2934*2190 | 2980*2964*2190 | ||||
Kind reminder: For more performance parameters of the ZBK type Roots vacuum pump, please click →【Water pump selection】 to consult
Why Choose Us?
Changsha Zhonglian Pump Industry Co., Ltd. was established in 1989, following the reform of the Changsha Water Pump Factory. It is a national high-tech comprehensive enterprise integrating design, research and development, manufacturing, and service. The company was listed on the Hunan Provincial Stock Exchange on December 31, 2019, with the abbreviated name "Zhonglian Pump Industry" and stock code: 600275HN. It is currently a key enterprise in China's centrifugal pump industry and one of the leading domestic manufacturers of multi-stage pumps, headquartered in Changsha, Hunan, a historical and cultural city in China.
FAQ
Q
What products do you mainly produce?
A
Q
Can you help me choose a model?
A
Q
Why is the price quotation so slow?
A
Q
What information should I provide when I need a quote?
A
Q
Do you have centrifugal pumps in stock?
A
Q
What is your usual delivery time?
A
Models in stock can be shipped by the next day at the latest. Others are custom-made, and depending on the product size and specific project conditions, the delivery time is generally between 7-90 days. Please consult our sales manager for details: 0731-88632200 。
Online Inquiry
Attention: Please leave your contact information, our professional staff will contact you as soon as possible!
Perhaps you also want to know?
Zoomlian Pump Industry
Address:No. 210, Environmental Protection Middle Road, Yuhua Economic Development Zone, Changsha City, Hunan Province China
All rights reserved © Changsha Zoomlian Pump Co., Ltd.
This website supports IPv4 IPv6 bidirectional access
Website construction:Zhongqi Power Changsha