Slide valve vacuum pumps for vacuum extrusion of bricks and tiles

Abstract

The invention relates to a slide-valve vacuum pump suitable for a tile vacuum extruder, belongs to the technical field of vacuum pumps, is suitable for the industries of building materials, chemical engineering, medicines, electrons and ceramics as vacuum extraction equipment, and is especially suitable for the slide-valve vacuum pump used in the tile vacuum extruder. The slide-valve vacuum pump comprises an air inlet fine filter, a one-way check valve, a pump body, a one-piece slide bar and sliding sleeve, an eccentric wheel, a one-piece slide block, a main shaft, a belt pulley, a belt, a motor, an exhaust valve, a first exhaust oil-gas separation chamber, a second exhaust oil-gas separation chamber, a third exhaust oil-gas separation chamber, a pump oil cyclic cooling device and a base; the air inlet fine filter is arranged on a vacuum pump air inlet pipe on one side of the pump body through the one-way check valve; the air inlet fine filter comprises a shell, a fine filter filtering element, an air passing pipe, a cover board and a seal ring; and the one-way check valve comprises a valve body, a one-way check valve air inlet, a one-way check valve air outlet, a one-way check valve core, a valve core mounting base and a spring.

Description

technical field [0001] The invention relates to a sliding valve vacuum pump suitable for brick vacuum extruders, belonging to the technical field of vacuum pumps, suitable for vacuuming equipment in building materials, chemical industry, medicine, electronics, ceramics and other industries, especially suitable for use in brick and tile vacuum extruders. Slide valve vacuum pump used in tile vacuum extruder. Background technique [0002] Vacuum extruder is a production machine widely used in brick and tile manufacturing industry at present, and vacuum pump is the most important supporting equipment in vacuum extruder. Conventional water ring vacuum pumps, slide valve vacuum pumps or rotary vane vacuum pumps are usually used in traditional vacuum extruders, but the following technical problems generally exist in actual use: 1) The use of water ring vacuum pumps has low working vacuum, The problem of low pumping efficiency and high energy consumption; 2) When using a convention...

AI Technical Summary

Problems solved by technology

Conventional water ring vacuum pumps, slide valve vacuum pumps or rotary vane vacuum pumps are usually used in traditional vacuum extruders, but the following technical problems generally exist in actual use: 1) The use of water ring vacuum pumps has low working vacuum, The problem of low pumping efficiency and high energy consumption; 2) When using a conventional slide valve or rotary vane oil-sealed vacuum pump, although the pumping efficiency is improved, the gas pumped out by the vacuum extruder contains a large amount of water vapor. There is a common problem that condensed water emulsifies the pump oil, which leads to the decline of pump performance; 3) The vacuum pump in the vacuum extruder works under the condition of large displacement for a long time, and the conventional slide valve or rotary vane oil seal vacuum pump sprays The oil phenomenon is serious, resulting in a large loss of pump oil consumption and serious environmental pollution; 4) The vacuum extruder works in an outdoor environment, and usually lacks qualified industrial circulating cooling water. On-site operations bring difficulties; 5) The ambient temperature varies greatly in different regions and seasons, which will also lead to significant changes in the performance of the vacuum pump, such as the freezing and cracking of the water cooling jacket in winter in the north; 6) The vacuum extruder The exhaust air generally carries a lot of solid dust and sediment particles. Once it enters the vacuum pump, it will directly cause the wear and tear of the pump. The purification effect of the actual gas filtration equipment currently in use is not ideal.

[0004] Patent CN201110139587.0 A slide-valve vacuum pump suitable for tile vacuum extruder. The intake filter set at the air inlet is the pre-filter of the vacuum pump, and the dust and fine sand in the gas are pumped through the pre-filter. Most of the entrained water vapor is filtered and removed by the filter element, but there is still a small amount of dust gas after being filtered by the filter element, which will pollute the vacuum pump oil through the vacuum pump connecting pipe and enter the vacuum pump air inlet, affecting the vacuum pumping effect and the service life of the vacuum pump. When the gas is compressed and discharged by the vacuum pump, a large amount of oil mist is entrained. Although the exhaust oil mist filter is installed in the upper chamber of the side-mounted oil tank for filtration, a small amount of oil mist is still entrained in the filtered vacuum pump exhaust gas, resulting in pump oil loss and environmental pollution.

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