Wangquan oil press-oil press classification

Oil press classification

       The oil press is a kind of oil processing machinery, which is a machine that squeezes the pretreated oil stock to extract vegetable oil. The screw oil press used as a pre-press is to pre-press the oil at a higher pressure, and then put the pre-pressed cake into the oil press to continue pressing or extract the oil by leaching. Therefore, the volume of the squeezing chamber at the inlet and outlet ends changes greatly, and the production capacity is also greater. The oil press can operate continuously, the labor intensity is small, and the residue cake after the oil is thin and small, which is convenient for comprehensive utilization. Yishui Yangdong Machinery Co., Ltd. is a famous oil press manufacturer in China, Wangquan brand oil press series equipment, covering: automatic oil press, multi-function oil press, screw press, hydraulic press, small press Oil presses, new oil presses, etc., including peanut oil presses, tea seed oil presses, sesame oil presses, rapeseed oil presses and household oil presses.

Oil press-mechanical classification

       Hydraulic oil, also known as hydraulic oil, has been basically replaced by screw oil. It belongs to static oil production, with low oil yield, small single function, many equipment and large area, workshop needs heat preservation, and poor operating conditions. However, hydraulic oil has the advantages of simple structure and energy saving. It can be applied to the grinding of some scattered oils (such as rice bran, wild oil) and oils that need to maintain special flavor or nutrition (such as cocoa beans, olives, sesame, etc.) Pulp hydraulic oil. In addition, it can also be used for pressing and separating solid fat or wax bran.

Hydraulic cold pressing oil press

The high-efficiency and energy-saving oil press is a combination of traditional pressing principles and modern technology. Compared with ordinary oil presses, it has high efficiency, environmental protection and energy saving, high product value-added, no loss, and no noise. The physical press does not require heating and does not add any chemicals. Raw material, no need to clean oil, easy to operate, no wearing parts, long service life.

Hydraulic oil press

It is an oil press that uses oil to transmit pressure, so that the oil is compressed under static conditions. According to the power source of the oil pump, there are two kinds of manual and electric; according to the way of applying pressure to the cake, it can be divided into vertical and horizontal. A hydraulic cylinder is fixed on the base of the vertical hydraulic oil press (Figure 1). A cylindrical piston is installed in the cylinder, and the upper part of the piston is connected with the cake tray as a whole. The blank is pre-pressed into a round cake, the cake ring is wrapped, and 20-40 round cakes are stacked between the cake tray and the top plate. The cake and the cake are separated by a thin backing plate with holes to drive the piston up. Pressure is generated to squeeze the cake to produce oil. After squeezing, the oil pump stops pressurizing, the piston falls, the slag cake is discharged, and the cake is reloaded to repeatedly press the oil intermittently. Each squeezing takes about 2 to 5 hours. When the electric oil pump is used, a circulating oil circuit system can be formed, and several hydraulic oil presses can be operated at the same time. The structure and working principle of the horizontal hydraulic oil press are basically the same as that of the vertical type. The equipment is easy to install, the oil flows smoothly, and there is no oil accumulation on the oil cake ring; but it occupies a large area and requires a heavy hammer and pulley for de-pressing. Or screw mechanism. The hydraulic oil press has high pressure, high oil output rate at one time, few moving parts, and convenient maintenance; but the labor intensity of loading and unloading the cake is also relatively large.

Screw oil press

       The screw press is a machine that continuously advances the blank in the press chamber and extracts crude oil under the action of dynamic extrusion. In addition to the feeding hopper, the press chamber is the main operating part, which consists of a press screw shaft and a cylindrical press cage. There are two types of single-stage pressing and double-stage pressing. The single-stage has only one horizontal pressing chamber, and the two-stage plus a direct pressing chamber for the first-stage pressing. The squeezing screw shaft is composed of a number of squeezing screws and pitch rings sleeved on the shaft. Each press screw has a certain pitch and screw depth, and the pitch of each press screw on a shaft is gradually shortened from the inlet to the outlet, and the screw depth gradually becomes shallower, so that the volume of the press chamber is gradually changed from the inlet to the outlet. Decrease, the billet enters the press chamber and advances along the snail stage to the exit, and the pressure on it gradually increases, thereby gradually squeezing out the oil. A gasket is installed between the pressing rod and the pressing rod of the cylindrical pressing cage to form an oil gap, and the extruded crude oil flows out through the gap. The squeezing cage of the large screw oil press is also equipped with a scraper. The scraper blade goes deep into the squeezing chamber and is aligned with each distance ring to prevent the blank from slipping in the squeezing chamber and to prevent back blank, and to adjust the thickness of the cake. So as to control the pressure of the press chamber accordingly and reduce the residual oil rate. In addition, the machine also has a cake clamping mechanism to make the surface of the slag cake smooth, and is often attached with a steaming pan, which can continuously steam and squeeze the oil.