CN204566752U - A kind of low-temp. screw oil expeller - Google Patents

Abstract

The utility model discloses a kind of low-temp. screw oil expeller, comprise squeezer, described squeezer comprises the squeezing head squeezing cage, be fixed on described squeezing cage one end, describedly go out to be provided with spiral shaft in the space that becomes with described squeezing capitiform of cake head, described spiral shaft is in communication with the outside by the cake output going out cake head on described squeezing head near one end of described squeezing head; Described squeezing cage is communicated with loading hopper; Described squeezing cage is communicated with loading hopper, and also comprise the frequency converter of variable-frequency motor and the described variable-frequency motor rotating speed of control, described variable-frequency motor drives described spiral shaft to rotate by reductor.The utility model manufacturing process is simple, volume is little, improves the transmission efficiency of oil press, improves oil yield, reduce pressing temperature.

Description

A low-temperature screw oil press

technical field

The utility model relates to a low-temperature oil outlet device for continuously pressing vegetable oil, in particular to a low-temperature screw oil press.

Background technique

The output of my country's main oil crops ranks first in the world, but there are many mountainous areas in my country, such as soybeans, peanuts, rapeseeds, light bark trees and other oil plants are scattered, and the development direction of cold presses at home and abroad is mainly based on large-scale , High efficiency is the goal. It is inconvenient for these large machines to go to the countryside to work in the village. Therefore, a large part of domestic oil crops are not used to make oil or the utilization rate is very low, so that my country still needs to import about 2 million tons of edible oil every year.

At present, the small oil press for household use usually needs to heat the oil, and perform steaming, frying and tempering treatment. After this process, the protein in the oil will be denatured, the reusable value of the cake will be reduced, and the squeezed oil will It will also lose its original flavor and reduce its nutritional value. In addition, the speed control device of the small oil press for household use is usually driven by mechanical friction, which has low power transmission efficiency and high energy consumption.

"China Oils and Fats" (Volume 29, No. 6, 2004) discloses a small-sized cold press. The press shaft is segmented, and the screw pitch of the press cage is variable. The cold press is complicated in manufacturing process and bulky. It has no Stepless variable speed motor is adopted, the speed cannot be adjusted, the pressing temperature is high, and the residual oil of the cake exceeds 10%.

Contents of the invention

The technical problem to be solved by the utility model is to provide a low-temperature screw oil press with simple manufacturing process and small volume to improve the transmission efficiency of the oil press, improve the oil yield and reduce the pressing temperature.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a low-temperature screw oil press, including a press, the press includes a press cage, a press head fixed at one end of the press cage, and the outlet A screw press shaft is arranged in the space formed by the cake head and the press head, and the end of the screw press shaft close to the press head communicates with the outside world through the cake outlet of the cake outlet on the press head; The cage communicates with the feed hopper; the press cage communicates with the feed hopper, and also includes a frequency conversion motor and a frequency converter for controlling the speed of the frequency conversion motor, and the frequency conversion motor drives the screw press shaft to rotate through a reducer.

The diameter of the end of the screw press shaft close to the cake outlet head is smaller than the diameter of the end of the screw press shaft away from the cake outlet head, and the length of the end with a smaller diameter of the screw press shaft is equal to the diameter of the screw press shaft. The diameter of the larger end is less than 1.5 times, and the diameter difference between the diameter of the larger end of the screw press shaft and the smaller diameter end of the screw press shaft is half of the depth of the spiral groove of the screw press shaft, which reduces the propulsion force. Increase the empty volume of the press cavity (cavity in the press cage), prolong the press time of the press material, so as to improve the oil yield.

The inner wall of the press cage near the end of the cake outlet is provided with a triangular conical anti-rotation groove, and the depth of the end of the anti-rotation groove near the cake outlet is half of the depth of the spiral groove of the screw press shaft. The length of the anti-rotation groove does not exceed the length of the smaller diameter end of the screw press shaft. The anti-rotation groove can prevent the squeezed material from consuming kinetic energy with the rotation of the squeeze shaft in the squeeze cage, increasing the pressing temperature, and destroying the effect of cold pressing.

The end of the screw press shaft close to the cake outlet head extends out of the press cage, and the length of the part of the screw press shaft extending out of the press cage does not exceed 1/ of the diameter of the smaller end of the screw press shaft. 10. The end of the screw press shaft close to the cake outlet head protrudes from the press cage, which can ensure that the pressed material forms a stable oil discharge pressure in the press cage, and further improves the oil yield.

The diameter of the cake outlet is one of 4mm, 5mm, 6mm, 8mm, and 10mm. According to different materials, the cake outlet can be used for materials with smaller particle size, less fiber content and lower viscosity after crushing. Cake outlet head with smaller diameter; for materials with larger particle size, more fiber content and higher viscosity after crushing, the cake outlet with larger diameter of cake outlet is used.

Compared with the prior art, the utility model has the beneficial effects as follows: the utility model adopts the frequency conversion motor as the power system of the oil press, and adjusts the speed of the frequency conversion motor through the frequency converter, which can conveniently control the temperature in the extraction cage , avoiding the power loss caused by mechanical friction stepless speed change, improving the power transmission efficiency of the oil press, energy saving and environmental protection; reducing the diameter of one end of the screw press shaft, thereby increasing the empty volume of the press chamber and reducing the propulsion force , prolong the pressing time of the pressed material, and improve the oil yield of the pressed oil; the anti-rotation groove on the press cage can prevent the pressed material from consuming kinetic energy in the pressing cavity with the rotation of the pressing shaft, increasing the pressing temperature, and destroying the effect of cold pressing; One end of the screw press shaft extends out of the press cage, so that the pressed material forms a stable oil output pressure in the press chamber, which further improves the oil output rate; the oil press of the utility model has a simple manufacturing process and a compact volume.

Description of drawings

Fig. 1 is a front view of an embodiment of the utility model;

Fig. 2 is a top view of an embodiment of the utility model;

Fig. 3 is a structural schematic diagram of a squeezer according to an embodiment of the present invention;

Fig. 4 is a structural schematic diagram of a pressing shaft according to an embodiment of the present invention;

Fig. 5 is a structural schematic diagram of a pressing cage according to an embodiment of the present invention.

Detailed ways

As shown in Figures 1-3, an embodiment of the utility model includes a press machine 1, and the press machine 1 includes a squeeze cage 8, a squeeze head 9 fixed at one end of the squeeze cage 8, and the cake outlet head 10 is connected to The space formed by the press head 9 is provided with a screw press shaft 11, and the end of the screw press shaft 11 close to the press head 9 communicates with the outside world through the cake outlet 12 of the cake output head 10 on the press head 9. The squeeze cage 8 communicates with the feed funnel 2, and also includes a frequency conversion motor 5 and a frequency converter 6 that controls the speed of the frequency conversion motor 5, and the frequency conversion motor 5 drives the screw shaft 11 to rotate through a reducer 4.

The press machine 1 and the reducer 4 are connected through the connecting flange 3 , and the frequency converter 6 and the reducer 4 are all installed on the frame 7 .

As shown in Figure 3 and Figure 4, in order to improve the oil yield of the pressed oil, the screw press shaft of the utility model adopts an integral structure, and its surface is an equal-pitch, trapezoidal spiral groove, and the screw press shaft 11 is close to the side of the cake head 10. The diameter of one end is reduced by 1.8mm, and the length of the smaller diameter end of the screw press shaft 11 is 45mm, which reduces the propulsion force, increases the empty volume of the press chamber, and prolongs the press time of the press material.

As shown in Figure 3 and Figure 5, in order to prevent the squeezed material from consuming kinetic energy with the rotation of the squeeze shaft in the squeeze cavity, increasing the squeeze temperature, and destroying the effect of cold pressing, there is a triangular cone on the inner wall of the squeeze cage 8 near the cake outlet. The anti-rotation groove 13, the depth of the anti-rotation groove near the end of the cake outlet is half of the depth of the helical groove of the screw press shaft, and the length of the anti-rotation groove does not exceed the length of the smaller end of the screw press shaft.

As shown in Figure 3, in order to form a stable oil outlet pressure in the press chamber and increase the oil output rate, the end of the screw press shaft 11 close to the cake outlet is extended 1.5mm from the end of the press cage 8 by 1.5 mm.

In order to adapt to the pressing of oil plants with different properties, the cake outlet 12 of the cake outlet head 10 is designed into five different sizes: the diameters are 4mm, 5mm, 6mm, 8mm, and 10mm respectively. According to different materials, for materials with smaller particle size, less fiber content and lower viscosity after crushing, the cake outlet with smaller diameter of the cake outlet can be used; while the material with larger particle size, more fiber content and higher viscosity after crushing For large materials, a cake head with a larger diameter of the cake outlet is used. The diameter of the cake outlet is no more than 1/3 of the diameter of the smaller end of the screw press shaft 11.

The cold press test was carried out on the fruit of the glabra tree, and the results showed that: the cold press of the utility model has good oil output, stable operation, high transmission efficiency, and the residual oil rate of the cake is less than 10%; the cake is in the form of a cylindrical strip solid; It can conveniently control the outlet temperature of the oil to less than 65°C, meeting the requirements of low-temperature cold pressing. The speed adjustment of the press by the frequency converter adjustment device is convenient, labor-saving and energy-saving. The structure is simple, and the press shaft is wear-resistant and has a long service life.

Claims (8)

1. a low-temp. screw oil expeller, comprise squeezer (1), described squeezer (1) comprises the squeezing head (9) squeezing cage (8), be fixed on described squeezing cage (8) one end, describedly go out to be provided with spiral shaft (11) in the space that formed of cake head (10) and described squeezing head (9), described spiral shaft (11) is in communication with the outside by the cake output (12) going out cake head (10) on described squeezing head (9) near one end of described squeezing head (9); Described squeezing cage (8) is communicated with loading hopper (2), it is characterized in that, also comprise the frequency converter (6) of variable-frequency motor (5) and control described variable-frequency motor (5) rotating speed, described variable-frequency motor (5) drives described spiral shaft (11) to rotate by reductor (4).

2. low-temp. screw oil expeller according to claim 1, described spiral shaft (11) near described in go out one end of cake head (10) diameter be less than spiral shaft (11) away from described go out the diameter of one end of cake head (10), and the length of the less one end of described spiral shaft (11) diameter is less than 1.5 times of described spiral shaft (11) diameter larger one end diameter, the diameter of the larger one end of described spiral shaft (11) diameter and the diameter difference of the less one end of described spiral shaft (11) diameter are the half of described spiral shaft (11) the helicla flute degree of depth.

3. low-temp. screw oil expeller according to claim 1 and 2, it is characterized in that, described squeezing cage (8) offers triangular pyramidal spline groove (13) on the inwall of described cake output (12) one end, and the degree of depth of described spline groove (13) near described cake output (12) one end is the half of described spiral shaft (11) the helicla flute degree of depth, the length of described spline groove (13) is no more than the length of the less one end of described spiral shaft (11) diameter.

4. low-temp. screw oil expeller according to claim 3, it is characterized in that, described squeezing cage (8) is stretched out in the one end going out cake head (10) described in described spiral shaft (11) is close, and the length that described spiral shaft (11) stretches out described squeezing cage (8) part is no more than 1/10 of described spiral shaft (11) diameter less one end diameter.

5. low-temp. screw oil expeller according to claim 4, is characterized in that, the length that described spiral shaft (11) stretches out described squeezing cage (8) part is 1.5mm.

6. low-temp. screw oil expeller according to claim 2, is characterized in that, the length of the less one end of described spiral shaft (11) diameter is 45mm.

7. the low-temp. screw oil expeller according to claim 2 or 6, is characterized in that, the diameter of the larger one end of described spiral shaft (11) diameter and the diameter difference of the less one end of described spiral shaft (11) diameter are 1.8mm.

8. low-temp. screw oil expeller according to claim 1 and 2, is characterized in that, the diameter of described cake output (12) is the one in 4mm, 5mm, 6mm, 8mm, 10mm.