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进口内啮合齿轮泵美国阿卡迪亚品牌

进口内啮合齿轮泵Product Description:

The internal gear is arranged in the working cavity of the pump body. One side of the internal gear is provided with a liquid inlet cavity and the other side is provided with a liquid discharge cavity. The back of the internal gear is provided with a back cavity and a sealing cavity. A guide pipe is arranged between the liquid inlet cavity and the sealing cavity. The guide pipe connects the sealing cavity and the liquid inlet cavity. A guide pipe is arranged between the liquid inlet chamber and the sealing chamber of the pump body to make the sealing chamber of the pump body communicate with the liquid inlet chamber. Under the effect of the pressure difference between the sealing chamber and the liquid inlet chamber, the liquid in the sealing chamber can smoothly flow into the liquid inlet chamber through the guide pipe, and the pressure in the sealing chamber is reduced, so as to prevent the mechanical seal components from being damaged and prevent material leakage; At the same time, the guide pipe is set to increase the overall fluidity of the liquid in the sealing chamber of the pump body, and avoid the shutdown caused by the stagnation or solidification of the material.

进口内啮合齿轮泵characteristic:

Gear pump is a gear type hydraulic pump, which converts mechanical energy into liquid pressure energy. Gear pump is divided into external gear pump and internal gear pump. Internal gear pumps are widely used in the transportation of liquids in petroleum, chemical, coating, food and grease industries. The types of liquids transported include light, volatile liquids, heavy, viscous liquids and semi-solid liquids.

进口内啮合齿轮泵Principle:

In the working cavity of the pump body, one side of the internal gear is the liquid inlet cavity and the other side is the liquid discharge cavity. The liquid inlet cavity and the liquid discharge cavity are connected with the back cavity and the sealing cavity. The back of the internal gear is connected with the main shaft. The outer end of the main shaft is provided with a mechanical seal assembly and a seal cover. There is a gap between the mechanical seal assembly, the pump body and the seal cover. The internal gear pump adopts the principle of internal gear engagement. The driving internal gear on the main shaft drives the external gear wheel engaged with it to rotate in the same direction. In the liquid inlet chamber, the internal gear and the external gear (not shown in the figure) are separated from each other to form negative pressure and suck in liquid; In the liquid discharge chamber, the internal gear and the external gear constantly mesh with each other to squeeze the liquid out. The pressure of the liquid inlet chamber is generally normal pressure, and the pressure of the liquid outlet chamber is high pressure, while the pressure in the back cavity is usually 50% - 70% of the pressure difference between the two ends of the liquid outlet chamber and the liquid inlet chamber. For example, if the suction pressure is 0mpa and the discharge pressure is 1.0MPa, the pressure of the back cavity 10 of the internal gear is 0.5MPa to 0.7MPa. In the process of conveying materials, the high-pressure materials at the discharge chamber 18 flow into the back cavity of the internal gear through the radial gap between the internal gear and the pump body under the pressure difference, and then flow into the sealing cavity and the gap from the spiral groove of the shaft sleeve. When the existing internal gear pump conveys materials with high viscosity or poor fluidity such as chocolate, corn syrup, thermosetting resin, etc., the materials that leak into the back cavity, seal and gap are easy to stagnate or solidify, so that the operation of the internal gear pump is affected or even stopped; In addition, the stagnation or solidification of materials will increase the pressure in the back cavity and further increase the pressure in the sealing cavity connected with the back cavity. Under the action of high pressure, the materials in the sealing cavity will leak from the mechanical seal assembly and the seal cover, making the seal of the pump body invalid.

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