Efficient single-stage pump with automatic flow adjusting function

Abstract

The utility model relates to an efficient single-stage pump with an automatic flow regulation function, which comprises an all-in-one machine, a pump cover, a pump body, a bottom plate, an impeller and a water retaining ring, the water retaining ring is positioned between the all-in-one machine and the pump cover and fixedly mounted on a shaft of the all-in-one machine, the pump cover and the pump body are detachably connected together, and the pump body is fixed on the bottom plate; a pressure tapping hole is formed in a pump body water outlet flange and matched with a pressure tapping hole plunger, and a deflation valve is arranged at the position of a deflation hole in the side edge of a pump cover and pump body connecting flange. A motor shaft of the all-in-one machine is directly connected with the impeller, and the pump cover and the all-in-one machine are fixed together. A motor shaft of the all-in-one machine is directly fixed with the impeller; matched spigots are arranged between the pump cover and the pump body, and sealing rings are arranged at the positions of the spigots. The device has the advantages of simple structure, long service life, low energy consumption, low noise, excellent automatic control, low cost, convenience in use, small occupied area, convenience in maintenance and the like.

Description

Technical Field

[0001] This utility model relates to a high-efficiency single-stage pump, specifically a high-efficiency single-stage pump with automatic flow adjustment that features simple structure, long lifespan, low energy consumption, low noise, excellent automatic control, low cost, small footprint, and easy maintenance. Background Technology

[0002] With the development of intelligent manufacturing and the Industrial Internet, permanent magnet motors will increasingly integrate advanced sensing technologies, data analysis, and artificial intelligence to achieve intelligent and networked control. This will enable them to adapt more flexibly to changing production demands, achieve adaptive control, improve the automation and intelligence levels of production, and reduce labor intensity and costs. Currently, many large-scale pumping stations use designs and controls with integrated control cabinets and frequency converters, which still result in waste in terms of investment costs and land area. Permanent magnet motors, with their high efficiency and low energy consumption, have certain advantages in design compared to asynchronous motors and are gradually entering the pump application field. Integrated and unified design will inevitably be an important trend in future development.

[0003] Traditional pump house designs often employ PLC program control in control cabinets. When frequency conversion is required, inverters and inverter cabinets are needed, resulting in high initial procurement costs. Furthermore, the pump house itself requires a large footprint to accommodate the supporting equipment. During operation, the humid environment of the pump house often poses various risks of failure to these electronic components. Additionally, traditional pump houses typically use asynchronous motors for drive, leading to problems such as high pump noise, excessive vibration, and high power consumption. Utility Model Content

[0004] To address the aforementioned problems, the main objective of this utility model is to provide a high-efficiency single-stage pump with automatic flow adjustment that features a simple structure, long lifespan, low energy consumption, low noise, excellent self-control, low cost, small footprint, and easy maintenance.

[0005] This utility model solves the above-mentioned technical problems through the following technical solution: a high-efficiency single-stage pump with automatic flow regulation, the high-efficiency single-stage pump with automatic flow regulation includes: an integrated unit, a pump cover, a pump body, a base plate, an impeller, and a water baffle ring. The water baffle ring is located between the integrated unit and the pump cover and is fixedly installed on the shaft of the integrated unit. The pump cover and the pump body are detachably connected together, and the pump body is fixed on the base plate. A pressure tapping hole is provided on the drain port flange of the pump body, and a pressure tapping hole plunger is matched with the pressure tapping hole. An air release valve is located at the air release hole position on the side of the flange connecting the pump cover and the pump body. The motor shaft of the integrated unit is directly connected to the impeller, and the pump cover is fixed together with the integrated unit. The motor shaft of the integrated unit is directly fixed together with the impeller. A mutually fitting stop is provided between the pump cover and the pump body, and a sealing ring is provided at the stop position.

[0006] In a specific embodiment of this utility model, the integrated machine is an integrated machine that combines the functions of a permanent magnet motor and a frequency converter.

[0007] In a specific embodiment of this utility model, the all-in-one machine is an all-in-one machine with built-in control functions.

[0008] In a specific embodiment of this utility model, the pressure tapping hole plunger is a screw plug.

[0009] In a specific embodiment of this utility model, the drain outlet of the pump body is equipped with a drain valve for blocking the drain outlet.

[0010] In a specific embodiment of this utility model, the drain valve is located near the bottom plate.

[0011] In a specific embodiment of this utility model, the distance between the drain valve and the base plate is 20-40cm.

[0012] In a specific embodiment of this utility model, a mechanical seal is provided between the pump cover and the pump body.

[0013] In a specific embodiment of this utility model, the pump cover is fixed to the integrated machine with fasteners.

[0014] In a specific embodiment of this utility model, the fastener is a combination of bolt, nut, and washer.

[0015] The positive and progressive effects of this utility model are as follows: Compared with common technologies, the high-efficiency single-stage pump with automatic flow regulation provided by this utility model has the following advantages: This utility model provides a high-efficiency single-stage pump with automatic flow regulation, which has the advantages of simple structure, long service life, low energy consumption, low noise, excellent automatic control, low cost, and convenient use, small footprint, and easy maintenance. Compared with the conventional pump room water supply system using a YE3 asynchronous motor single-stage pump, frequency converter cabinet, and control cabinet, this utility model has significant optimization. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the overall structure of this utility model.

[0017] The following are the names corresponding to the reference numerals in this utility model:

[0018] 1. Integrated unit; 2. Water baffle ring; 3. Fastener; 4. Pump cover; 5. Pump body; 6. Impeller; 7. Base plate; 9. Pressure tapping hole plunger; 10. Air release valve; 11. Sealing ring; 12. Locking screw; 13. Mechanical seal. Detailed Implementation

[0019] The preferred embodiments of this utility model are given below with reference to the accompanying drawings to illustrate the technical solution of this utility model in detail.

[0020] Figure 1 This is a cross-sectional view illustrating the overall structure of this utility model, as shown below. Figure 1 As shown: This utility model proposes a high-efficiency single-stage pump with automatic flow regulation. The high-efficiency single-stage pump with automatic flow regulation includes: an integrated unit 1, a pump cover 4, a pump body 5, a base plate 7, an impeller 6, and a water-retaining ring 2. The water-retaining ring 2 is located between the integrated unit 1 and the pump cover 4 and is fixedly installed on the shaft of the integrated unit 1. The pump cover 4 and the pump body 5 are detachably connected together, and the pump body 5 is fixed to the base plate 7. A pressure tapping hole is provided on the drain flange of the pump body, and a pressure tapping hole plunger 9 is provided for the pressure tapping hole. In specific implementation, the pressure tapping hole plunger 9 in this utility model is a screw plug. An air release valve 10 is located at the air release hole position on the side of the flange connecting the pump cover 4 and the pump body 5. The motor shaft of the integrated unit is directly connected to the impeller, and the pump cover 4 is fixed to the integrated unit. The motor shaft of the integrated unit 1 is directly fixed to the impeller 6. A mutually fitting stop is provided between the pump cover 4 and the pump body 5, and a sealing ring 11 is provided at the stop position.

[0021] The integrated machine 1 in this utility model is an integrated machine that combines the functions of a permanent magnet motor and a frequency converter, and it is an integrated machine with built-in control functions.

[0022] The pump body 5 is equipped with a drain valve 8 for blocking the drain outlet. The drain valve 8 is located near the bottom plate 7.

[0023] In this invention, the distance between the drain valve 8 and the base plate 7 is 20-40cm. In practice, this parameter range can be changed to other ranges depending on the specific on-site requirements.

[0024] In this utility model, a mechanical seal 13 is provided between the pump cover 4 and the pump body 5. The pump cover 4 is fixed to the integrated machine 1 by fasteners 3, which are a combination of bolts, nuts and washers.

[0025] During installation, first, install the baffle ring 2 on the shaft of the integrated unit (permanent magnet motor + frequency converter) 1. Then, connect and fix the pump cover 4 to the integrated unit (permanent magnet motor + frequency converter) 1 using fasteners (bolts, nuts, washers) 3. Next, insert the mechanical seal 13 and impeller 6 onto the motor shaft and tighten them with locking screws 12. Then, install the O-ring 11 at the stop position of the pump cover 4. Then, connect the pump body 5 to the pump cover 4 using fasteners (bolts, nuts, washers) 3. Next, install the base plate 7 under the pump body. Finally, install the vent valve 10, pressure tap plunger 9, drain valve 8, and other accessories in their respective positions using threads. The integrated unit (permanent magnet motor + frequency converter) 1 is more efficient than a conventional YE3 motor because of its high energy conversion efficiency. It uses permanent magnets to provide the magnetic field, eliminating the need for excitation current and thus reducing losses. The direct connection of the motor shaft eliminates the transmission efficiency loss of the coupling, improving both lifespan and efficiency. The all-in-one unit (permanent magnet motor + frequency converter) has a built-in control module, which can automatically control the water pump to start, stop and change frequency according to the required logic without the need for a control cabinet, saving the cost and space of control cabinets and frequency converter cabinets.

[0026] Compared with the prior art, the present invention has the following significant advantages:

[0027] Superior Structure: Adopting an integrated unit (permanent magnet motor + frequency converter) and a direct-drive structure, the overall pump structure is simplified, the number of parts is reduced by about 30%, there are fewer failure points, it is more compact, the operation is more coordinated, and the operation is more stable.

[0028] Long lifespan: 1. The direct-drive structure reduces friction and wear between components, minimizing the possibility of failure and increasing service life. 2. The permanent magnet motor has a simpler structure, reducing some components (eliminating easily damaged parts such as slip rings and brushes), further reducing the possibility of failure, improving operational reliability and stability, extending the overall service life, and reducing maintenance costs and effort in later use. 3. The impeller is made of stainless steel, which is corrosion-resistant and wear-resistant, resulting in a longer service life and higher efficiency.

[0029] Lower energy consumption: 1. High energy conversion efficiency: Permanent magnet motors use permanent magnets to generate a magnetic field, unlike traditional asynchronous motors which rely on current to generate the magnetic field. This reduces excitation current consumption, thereby improving energy conversion efficiency and reducing energy waste. 2. Wider efficiency range: Permanent magnet motors exhibit very low efficiency drop-off under low load conditions. Compared to traditional asynchronous motors, their efficiency advantage is more pronounced under low and partial load conditions, further reducing energy waste. 3. Direct-drive structure: Eliminating the coupling reduces transmission efficiency and minimizes wear and efficiency losses between drive shafts.

[0030] Lower noise: 1. Permanent magnet motors generate less noise and vibration during operation, resulting in more stable operation and lower vibration. Experimental tests generally show that the noise level is 3-5 dB lower than that of asynchronous motors. 2. The direct-drive structure eliminates the bearing housing, resulting in better pump shaft coaxiality and lower vibration and noise.

[0031] Control optimization: The system adopts an integrated unit (permanent magnet motor + frequency converter). The frequency converter has its own control program, which can control constant pressure, constant temperature, constant pressure difference, constant temperature difference, constant flow, etc. On-site manual selection is available. The intelligent human-machine interface screen makes operation simple and convenient, saves debugging time, and meets the control requirements of closed-loop circulation systems such as HVAC process circulating water.

[0032] Smaller footprint: It adopts an integrated unit (permanent magnet motor + frequency converter), eliminating the need for frequency converter cabinets and control cabinets, thus saving floor space.

[0033] Lower cost: The integrated unit (permanent magnet motor + frequency converter) eliminates the need for frequency converter cabinet and control cabinet, saving the purchase cost of two cabinets, estimated at around 20-30%.

[0034] This invention provides a high-efficiency single-stage pump with automatic flow regulation, which has advantages such as simple structure, long service life, low energy consumption, low noise, excellent automatic control, low cost, ease of use, small footprint, and convenient maintenance. Compared with the conventional pump room water supply system that uses a YE3 asynchronous motor single-stage pump, frequency converter cabinet, and control cabinet, this invention has significant optimizations.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A high-efficiency single-stage pump with automatic flow regulation, characterized in that: The high-efficiency single-stage pump with automatic flow regulation includes: an integrated unit, a pump cover, a pump body, a base plate, an impeller, and a water baffle ring. The water baffle ring is located between the integrated unit and the pump cover and is fixedly installed on the shaft of the integrated unit. The pump cover and the pump body are detachably connected together, and the pump body is fixed to the base plate. A pressure tapping hole is provided on the drain port flange of the pump body, and a pressure tapping hole plunger is provided for the pressure tapping hole. An air release valve is located at the air release hole position on the side of the flange connecting the pump cover and the pump body. The motor shaft of the integrated unit is directly connected to the impeller, and the pump cover is fixed to the integrated unit. The motor shaft of the integrated unit is directly fixed to the impeller. A mutually fitting stop is provided between the pump cover and the pump body, and a sealing ring is provided at the stop position.

2. The high-efficiency single-stage pump with automatic flow adjustment according to claim 1, characterized in that: The all-in-one machine integrates the functions of a permanent magnet motor and a frequency converter.

3. The high-efficiency single-stage pump with automatic flow adjustment according to claim 1, characterized in that: An all-in-one machine is an all-in-one machine with built-in control functions.

4. The high-efficiency single-stage pump with automatic flow adjustment according to claim 1, characterized in that: The pressure tapping hole plunger is a screw plug.

5. The high-efficiency single-stage pump with automatic flow adjustment according to claim 1, characterized in that: The pump body is equipped with a drain valve at the drain outlet to block the drain.

6. The high-efficiency single-stage pump with automatic flow adjustment according to claim 5, characterized in that: The drain valve is located near the bottom plate.

7. The high-efficiency single-stage pump with automatic flow adjustment according to claim 6, characterized in that: The distance between the drain valve and the base plate should be 20-40cm.

8. The high-efficiency single-stage pump with automatic flow adjustment according to claim 1, characterized in that: A mechanical seal is installed between the pump cover and the pump body.

9. The high-efficiency single-stage pump with automatic flow adjustment according to claim 1, characterized in that: The pump cover is secured to the integrated machine with fasteners.

10. The high-efficiency single-stage pump with automatic flow adjustment according to claim 9, characterized in that: Fasteners are combinations of bolts, nuts, and washers.

Images