CN216278315U

CN216278315U - High-power high-efficiency Niemann worm gear chemical pump

Info

Publication number: CN216278315U
Application number: CN202121739279.7U
Authority: CN
Inventors: 林秀薰; 杨圆; 王�琦
Original assignee: Essor Precision Machinery Co ltd
Current assignee: Zhejiang Taijiu Precision Machinery Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-04-12
Anticipated expiration: 2031-07-29

Abstract

The utility model relates to a high-power high-efficiency Niemann worm gear chemical pump with high power, high transmission efficiency and high stability, which comprises a chemical pump, wherein when a motor in the chemical pump is 30-75 KW, a power output shaft of the motor is matched with a multi-head Niemann worm, the multi-head Niemann worm and a Nieman worm gear are in tooth meshing operation transmission, and the Nieman worm gear (2) is in inner diameter matching with a worm gear shaft, so that the output torque is more than or equal to 5775 NM. The advantages are that: firstly, the gear is driven by using a Niemann tooth-shaped worm gear, and due to the special tooth surface geometric tooth shape design, the tooth surface pressure is greatly reduced, so that the concave surface of the worm is matched with the convex surface of the worm gear, better tooth surface meshing and extremely low tooth surface pressure are ensured, the problems of abrasion caused by using a conventional tooth-shaped worm gear and poor transmission stability after abrasion are solved, and the chemical pump has better stability and longer service life; secondly, on the basis of adopting the Niemann tooth form, the number of the worm heads is increased, the transmission efficiency is greatly improved, and the transmission efficiency reaches 90.63 percent.

Description

High-power high-efficiency Niemann worm gear chemical pump

Technical Field

The utility model relates to a high-power high-efficiency Niemann worm gear chemical pump which has high power and high transmission efficiency and can keep high stability, belonging to the field of chemical pump manufacturing.

Background

In the structural design of the existing worm and worm gear chemical pump, the tooth form of the worm adopts Archimedes, the number of the heads of the worm is 1, and the lead angle is 6 degrees, 20 '24.69'. Therefore, the output power is small (< 40 KW), and the efficiency is low (the transmission efficiency is only 71.28%).

Disclosure of Invention

The design purpose is as follows: avoids the defects in the background technology, designs a high-power high-efficiency Niemann worm gear chemical pump which has high power and high transmission efficiency and can keep high stability

The design scheme is as follows: in order to achieve the above design objectives. On the basis of the background technology, the worm gear in the existing worm gear chemical pump is replaced by the multi-head Niemann worm and the Niemann worm wheel, namely, the multi-head Niemann worm and the Niemann worm wheel are used for manufacturing the chemical pump, and according to the safety, stability and high-efficiency precision requirements of specific requirements of chemical pump media, the number of the heads of the Niemann worm is designed to be 4 on the basis of the existing Niemann worm, and the lead angle is designed to be 23 degrees 57 '44.96', so that the manufactured worm gear chemical pump is tested: the power is between 30KW and 75KW, the output torque is 5775NM, the installation space is limited, the 90-degree steering requirement is met, and the use of high stability is maintained

The high-efficiency Niemann worm gear is designed to meet the use requirements, and the following problems are mainly solved:

the technical scheme is as follows: a high-power high-efficiency Niemann worm gear chemical pump comprises a chemical pump, wherein when a motor in the chemical pump is 30-75 KW, a power output shaft of the motor is matched with a multi-head Niemann worm, the multi-head Niemann worm and a Niemann worm gear are in tooth meshing operation transmission, a Niemann worm gear (2) is in inner diameter fit with a worm gear shaft, and therefore output torque is larger than or equal to 5775 NM.

Compared with the background technology, firstly, the utility model uses the Niemann tooth-shaped worm gear and worm for transmission, and the tooth surface pressure is greatly reduced due to the special tooth surface geometric tooth shape design, so that the concave surface of the worm is matched with the convex surface of the worm gear, better tooth surface meshing and extremely low tooth surface pressure are ensured, the problems of easy abrasion and poor transmission stability after abrasion caused by using the conventional tooth-shaped worm gear and worm are solved, and the chemical pump has better stability and longer service life; secondly, on the basis of adopting the Niemann tooth form, the number of the worm heads is increased, the transmission efficiency is greatly improved, and the transmission efficiency reaches 90.63 percent.

The detection results show that the following technical indexes are achieved

Drawings

FIG. 1 is a schematic diagram of a high-power high-efficiency Niemann worm gear.

Fig. 2 is a schematic diagram of the worm gear of fig. 1 applied to a chemical metering pump.

The motor rotates to drive the worm, and the worm obtains the reciprocating motion of the connecting rod through the action of the worm gear mechanism and the eccentric wheel. The connecting rod pushes the piston to make the piston reciprocate in the working chamber of the metering pump. When the piston moves leftwards, vacuum is formed in the pump cavity, the suction valve is opened, the discharge valve is closed, and liquid enters the pump cavity; when the shift piston moves to the right, the suction valve is closed, the discharge valve is opened, and the liquid is discharged from the discharge valve.

Detailed Description

Example 1: reference is made to figures 1 and 2. A high-power high-efficiency Niemann worm gear chemical pump comprises a chemical pump, when a motor in the chemical pump is 30-75 KW, a power output shaft of the motor is matched with a multi-head Niemann worm (1), the multi-head Niemann worm (1) and a Niemann worm gear (2) are in tooth meshing operation transmission, the Niemann worm gear (2) is in inner diameter matching with a worm gear shaft, and therefore output torque is equal to or larger than 5775 NM. The number of the worm heads of the Niemann worm (1) is 4. The number of the worm heads of the Nieman worm (1) is 4, the lead angle is 23 degrees 57 '44.96', but positive and negative errors are allowed, and only the effect is different.

It is to be understood that: although the foregoing embodiments have described the design concept of the present invention in detail, these descriptions are only used for describing the design concept of the present invention in brief, and not for limiting the design concept of the present invention, and any combination, addition or modification that does not exceed the design concept of the present invention falls within the scope of the present invention.

Claims

1. The utility model provides a high-power high efficiency niemann worm gear chemical pump, includes the chemical pump, characterized by: when the motor in the chemical pump is 30-75 KW, the power output shaft of the motor is matched with the multi-head Nieman worm (1), the multi-head Nieman worm (1) and the Nieman worm wheel (2) are in tooth meshing operation transmission, the Nieman worm wheel (2) is in inner diameter matching with a worm wheel shaft, and therefore the output torque is larger than or equal to 5775 NM.

2. The high power high efficiency niemann worm gear chemical pump as set forth in claim 1, wherein: the number of the worm heads of the Niemann worm (1) is 4.

3. The high power high efficiency niemann worm gear chemical pump as set forth in claim 1, wherein: the number of the worm heads of the Niemann worm (1) is 4, and the lead angle is 23 degrees 57 '44.96'.