阅读说明：本技术 一种无油干式螺杆压缩机密封组件 (Oil-free dry type screw compressor sealing assembly ) 是由 胡锐 于 2019-09-29 设计创作，主要内容包括：本发明公开了一种无油干式螺杆压缩机密封组件,属于设备密封技术领域,空压机螺杆近空压箱一侧安装有轴套,密封组件安装在轴套上,密封组件实质为一浮动密封,浮动密封包括外壳、气密封环和油密封环,油密封环上安装有密封圈,油密封环由一对同心空芯圆柱组成,油密封环上安装有波形弹簧,气密封环和油密封环与外壳之间存在间隙,浮动密封上开设有若干U型孔。该无油干式螺杆压缩机利用浮动密封解决轴承游隙以及轴承磨损引起轴承窜动的问题,不但封油封气性能好,而且可以跟随轴承的窜动进行小幅度的摆动,减少了螺杆压缩机内部零件的损耗。(The invention discloses a sealing assembly of an oil-free dry screw compressor, which belongs to the technical field of equipment sealing, wherein a shaft sleeve is arranged on one side of a screw of the air compressor, the sealing assembly is arranged on the shaft sleeve, the sealing assembly is substantially a floating seal, the floating seal comprises a shell, an air sealing ring and an oil sealing ring, a sealing ring is arranged on the oil sealing ring, the oil sealing ring consists of a pair of concentric hollow cylinders, a wave spring is arranged on the oil sealing ring, gaps are formed among the air sealing ring, the oil sealing ring and the shell, and a plurality of U-shaped holes are formed in the floating seal. The oil-free dry type screw compressor solves the problem of bearing play caused by bearing clearance and bearing abrasion by utilizing floating seal, has good oil and gas sealing performance, can swing in a small range along with the play of the bearing, and reduces the loss of internal parts of the screw compressor.)

1. An oil-free dry screw compressor seal assembly, its characterized in that: the air compressor machine screw rod (6) are close to air-pressure tank one side and are installed axle sleeve (B-1), seal assembly installs on axle sleeve (B-1), seal assembly is virtually one floating seal (4), floating seal (4) are including shell, gas seal ring (B-4) and oil seal ring (B-3), install sealing washer (B-6) on oil seal ring (B-3), oil seal ring (B-3) comprises a pair of concentric hollow cylinder, install wave spring (B-5) on oil seal ring (B-3), there is the clearance between gas seal ring (B-4) and oil seal ring (B-3) and the shell, a plurality of U type hole (7) have been seted up on floating seal (4).

2. An oil-free dry screw compressor seal assembly as claimed in claim 1, wherein: and an oil throwing pipe (B-2) is arranged on one side of the floating seal (4).

3. An oil-free dry screw compressor seal assembly as claimed in claim 1, wherein: get rid of oil pipe (B-2) one side and install bearing (5), bearing (5) link to each other with gear (2) through bearing gland (3), gear (2) one side is installed gear and is pressed lid (1).

4. An oil-free dry screw compressor seal assembly as claimed in claim 1, wherein: a pair of meshed male and female screws are installed in the oil-free dry type screw compressor, and sealing components installed on one sides of the male and female screws are identical.

Technical Field

The invention relates to the technical field of equipment sealing, in particular to a sealing assembly of an oil-free dry type screw compressor.

Background

The phenomenon of screw rod drunkenness can appear in the long-term use of screw compressor on the existing market, and the screw rod rubs with the axle sleeve under the high-speed rotatory condition, not only can increase energy loss, makes compressor internals temperature rise, and along with the range of screw rod drunkenness is bigger and bigger, the risk of oil leak gas leakage also is bigger and bigger moreover.

Disclosure of Invention

The technical problem to be solved by the invention is to provide an oil-free dry screw compressor sealing assembly, which solves the problem of bearing play caused by bearing clearance and bearing abrasion by using floating seal, has good oil and gas sealing performance, can swing in a small range along with the play of the bearing, and reduces the loss of internal parts of the screw compressor.

In order to achieve the purpose, the invention provides the following technical scheme: an oil-free dry screw compressor seal assembly, its characterized in that: the air compressor comprises an air compressor screw 6, a shaft sleeve B-1, a sealing assembly, a floating seal 4, a shell, an air sealing ring B-4 and an oil sealing ring B-3, wherein the shaft sleeve B-1 is installed on one side of the air compressor screw 6 close to an air pressure box, the sealing assembly is installed on the shaft sleeve B-1, the sealing assembly is substantially the floating seal 4, the floating seal 4 comprises the shell, the air sealing ring B-4 and the oil sealing ring B-3, a sealing ring B-6 is installed on the oil sealing ring B-3, the oil sealing ring B-3 is composed of a pair of concentric hollow cylinders, a wave spring B-5 is installed on the oil sealing ring B-3, gaps.

Preferably, one side of the floating seal 4 is provided with an oil slinger B-2.

Preferably, a bearing 5 is installed on one side of the oil throwing pipe B-2, the bearing 5 is connected with the gear 2 through a bearing pressing cover 3, and a gear pressing cover 1 is installed on one side of the gear 2.

Preferably, a pair of meshed male and female screws are installed in the oil-free dry screw compressor, and the sealing assemblies installed on one sides of the male and female screws are the same.

Compared with the prior art, the invention has the beneficial effects that: the existence of the wave spring can enable the sealing element to carry out small-amplitude fluctuation along with the movement of the screw rod, the loss of the screw rod movement to internal parts of a machine is reduced, the floating seal provided with the oil seal ring and the air seal ring can completely separate oil and gas, the safe and stable operation of equipment is ensured, the U-shaped hole in the floating seal can enable gas to pass through the exhaust pipeline from the upper hole to be discharged from the equipment, and lubricating oil can also flow back to the oil bin from the lower hole through the oil passage.

Drawings

FIG. 1 is a front view of the present invention;

fig. 2 is a left side view of the internal structure of the oil-free dry screw compressor;

FIG. 3 is a cross-sectional view taken at A in FIG. 2;

fig. 4 is an enlarged view at B in fig. 3.

In the figure: 1. a gear pressing cover; 2. a gear; 3. a bearing gland; 4. floating sealing; 5. a bearing; 6. a screw; 7. a U-shaped hole; b-1, a shaft sleeve; b-2, an oil throwing pipe; b-3, an oil seal ring; b-4, a gas seal ring; b-5, a wave spring; b-6, a sealing ring.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.