CN112659617B - An intelligent low-temperature screw oil press with a pressure monitoring device - Google Patents
An intelligent low-temperature screw oil press with a pressure monitoring device Download PDFInfo
- Publication number
- CN112659617B CN112659617B CN202011516845.8A CN202011516845A CN112659617B CN 112659617 B CN112659617 B CN 112659617B CN 202011516845 A CN202011516845 A CN 202011516845A CN 112659617 B CN112659617 B CN 112659617B
- Authority
- CN
- China
- Prior art keywords
- pressing
- temperature
- pressure
- press
- control system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012806 monitoring device Methods 0.000 title claims abstract description 18
- 238000003825 pressing Methods 0.000 claims abstract description 77
- 238000012544 monitoring process Methods 0.000 claims abstract description 68
- 238000001914 filtration Methods 0.000 claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 47
- 239000000155 melt Substances 0.000 claims description 19
- 239000000498 cooling water Substances 0.000 claims description 13
- 230000003750 conditioning effect Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 230000005284 excitation Effects 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 238000004458 analytical method Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000009172 bursting Effects 0.000 claims 3
- 238000013480 data collection Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 description 65
- 235000019198 oils Nutrition 0.000 description 65
- 239000000463 material Substances 0.000 description 12
- 230000008859 change Effects 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 235000019737 Animal fat Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
Landscapes
- Press Drives And Press Lines (AREA)
Abstract
本发明涉及一种带有压力监控装置的智能低温螺旋榨油机，包括螺旋榨油机，其包括机架，机架的榨膛内设置有榨螺轴，并通过减速机与电机连接；榨笼套设在榨螺轴上，其上设置若干滤油区段；还包括压力监测单元、温度监测单元、冷却单元和自动控制系统；压力监测单元设置在榨笼的各个滤油区段内，对各个滤油区段的压力数据进行实时监测；自动控制系统根据接收到的压力数据，对喂料速度、主轴转速进行控制和调整；温度监测单元用于对榨膛内不同位置的温度数据进行监控，并发送到自动控制系统；冷却单元用于根据自动控制系统发送的控制信号保证榨膛处于低温环境。本发明可以广泛应用于榨油机领域。
The present invention relates to an intelligent low-temperature screw oil press with a pressure monitoring device, including a screw oil press, which includes a frame, a pressing screw shaft is arranged in the pressing chamber of the frame, and is connected to a motor through a reducer; a pressing cage is arranged on the pressing screw shaft, and a plurality of oil filtering sections are arranged thereon; it also includes a pressure monitoring unit, a temperature monitoring unit, a cooling unit and an automatic control system; the pressure monitoring unit is arranged in each oil filtering section of the pressing cage, and the pressure data of each oil filtering section is monitored in real time; the automatic control system controls and adjusts the feeding speed and the main shaft speed according to the received pressure data; the temperature monitoring unit is used to monitor the temperature data of different positions in the pressing chamber and send it to the automatic control system; the cooling unit is used to ensure that the pressing chamber is in a low temperature environment according to the control signal sent by the automatic control system. The present invention can be widely used in the field of oil presses.
Description
Technical Field
The invention relates to a screw oil press, in particular to an intelligent low-temperature screw oil press with a pressure monitoring device.
Background
The spiral low-temperature oil press has the remarkable advantages of small occupied area, simple operation, continuous production, less pollution, good oil quality and the like, and is often applied to extracting grease from vegetable oil.
Low temperature screw presses require different screw structures to be designed for different oils. Because the oil press has a pressure monitoring function, various oil materials can be squeezed by the equipment, and the spiral structure parameter which is most suitable for low-temperature squeezing and the standard curve of the squeezing pressure distribution under the parameter are explored. The method has the advantages that the influence of parameters such as the water content of materials, the squeezing temperature, the spiral structure, the compression ratio and the like on the squeezing chamber pressure and the oil yield can be explored by utilizing the function of collecting the pressure in the squeezing chamber in the squeezing test process, the squeezing parameter equation of different oil materials can be established by recording test parameters, the empirical formula of the spiral oil press is perfected, and the method is used for quickly selecting proper spiral combination, strip squeezing gap and other structural parameters aiming at the oil materials with different water contents and grease contents. Can guide the development of the novel oil press and the production practice of an oil press workshop.
In the actual use of the spiral oil press, workers need to observe the running condition of the oil press, so that the problems of serious slag discharge, smoothbore, vehicle tightness and the like are avoided. In addition, operators still need to open the press cage periodically to check the abrasion condition of the surfaces of the press screws, and whether the screw teeth are broken or not is a problem. However, only the operation worker opens the press cage periodically to check the operation condition of the oil press, so that not only a great deal of manpower is consumed, but also the operation condition of the oil press cannot be found in time.
Disclosure of Invention
Aiming at the problems, the invention aims to provide an intelligent low-temperature spiral oil press with a pressure monitoring device, which can automatically collect pressure changes in the frying chamber of the oil press in real time and automatically control the oil press according to the collected pressure data.
The intelligent low-temperature screw oil press with the pressure monitoring device comprises a screw oil press, wherein the screw oil press comprises a frame, a press cage, a press screw shaft, a feeding device, a speed reducer and a motor, the press screw shaft is arranged in a press chamber of the frame and is electrically connected with the motor through the speed reducer, the press cage is sleeved on the press screw shaft, a plurality of oil filtering sections separated by a partition plate are arranged on the press cage, the intelligent low-temperature screw oil press further comprises a pressure monitoring unit, a temperature monitoring unit, a cooling unit and an automatic control system, the pressure monitoring unit is arranged in each oil filtering section of the press cage and used for monitoring pressure data of each oil filtering section in real time and sending the pressure data to the automatic control system, the automatic control system is used for controlling and adjusting feeding speed and main shaft rotating speed according to the received pressure data, the temperature monitoring unit is used for monitoring temperature data of different positions in the press chamber and sending the temperature data to the automatic control system, and the automatic control system is used for guaranteeing that the temperature of the press chamber is not in the environment of 70 ℃.
The automatic control system comprises a data acquisition unit, a processing display unit and a central controller, wherein the data acquisition unit is connected with each pressure monitoring unit and used for acquiring pressure data monitored by each pressure monitoring unit, the processing display unit is used for processing the pressure data acquired by the data acquisition unit and sending the pressure data to the central controller, the central controller comprises a pressure control unit and a temperature control unit, the pressure control unit is used for comparing the acquired pressure value in a press chamber with a pre-stored standard working curve and adjusting the feeding spiral rotating speed and the pressing spiral rotating speed through a network communication interface according to the comparison result, and the temperature control unit is respectively connected with the temperature monitoring unit and the cooling unit and used for analyzing the distribution condition of the frying chamber temperature according to the temperatures of different positions of the frying chamber acquired by the temperature monitoring unit and controlling the cooling water flow of the cooling unit according to the analysis result so as to achieve the aim of enabling the frying chamber temperature to be not higher than 70 ℃.
Further, the data acquisition unit comprises a multichannel signal conditioning module and an excitation power supply, wherein the multichannel signal conditioning module is used for converting resistance signals monitored by the pressure monitoring units into current signals, and the excitation power supply is used for supplying power and amplifying the current signals.
Further, at least one pressure monitoring unit is arranged on each oil filtering section.
Further, each oil filtering section of the pressing cage comprises a plurality of first pressing bars and a second pressing bar, the second pressing bars are arranged at the middle positions of the side faces of the pressing cage, and threaded holes for installing the pressure monitoring units are formed in the second pressing bars.
The pressure monitoring unit comprises a strain gauge sensor and a melt pressure sensor, wherein the strain gauge sensor is arranged on at least one first press bar on each oil filtering section, the melt pressure sensor is detachably arranged on the second press bar through a threaded hole which is formed in the second press bar and matched with the size of a detection head of the melt pressure sensor, the strain gauge sensor and the melt pressure sensor are connected with a data acquisition unit in the automatic control system through wires, the strain gauge sensor is used for monitoring pressure real-time changes in a press chamber for a long time, and the melt pressure sensor is used for calibrating the strain gauge sensor regularly.
Further, when each pressure monitoring unit is connected with the automatic control system, the strain gauge sensor, the temperature compensation strain gauge and the two resistors are matched to form a half-bridge wiring.
Further, the temperature compensation strain gauge is adhered to the outer surface of a third press bar, and the third press bar is independently placed outside the press cage and keeps contact with the corresponding oil filtering section of the press cage, so that the temperature of the third press bar is the same as that of the first press bar in the corresponding oil filtering section in the press chamber.
Further, the temperature monitoring unit comprises at least three metal temperature sensors attached to the squeezing section and the discharging section on the squeezing cage, and the metal temperature sensors are used for collecting temperature data of different positions of the squeezing chamber and sending the temperature data to the automatic control system.
Further, the cooling unit comprises a water inlet and a water outlet which are arranged on the tail end protective cover of the screw shaft at the cake outlet end, wherein the water inlet is communicated with the hollow main shaft of the screw shaft through an elongated water pipe, the water outlet is communicated with the circulating water tank, a water inlet valve and a water outlet valve are respectively arranged at the water inlet and the water outlet, and are connected with the automatic control system and controlled by the automatic control system.
The pressure monitoring unit can directly measure radial pressure of the press chamber, can avoid influences of material and structure changes of various press bars or press rings and interferences of complex stress conditions during operation, has better universality and reliability, 2, the pressure monitoring unit is provided with the temperature monitoring unit and the cooling unit, can avoid influences of adverse factors such as high temperature, high oil, strong friction and the like in the press chamber on working conditions of the pressure sensor, can obtain higher durability and stability, 3, the pressure monitoring unit is simple in structure and wide in application, can realize continuous characterization of radial pressure dynamic of the press chamber, and provides reliable basis for structural improvement and operation optimization of the screw oil press. Therefore, the invention can be widely applied to the field of oil presses.
Drawings
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular descriptions of exemplary embodiments of the invention as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the invention.
FIG. 1 is a schematic diagram of an intelligent cryogenic screw press with pressure monitoring device according to an exemplary embodiment of the present invention;
FIG. 2 shows a strain gage of the pressure monitoring unit of the present invention connected to a signal conditioning module;
FIG. 3 shows a second press bar with a threaded hole installed in the press cage according to the present invention;
FIG. 4 is a schematic view of a second press bar aperture according to the present invention;
FIG. 5 is a simplified logic block diagram of a pressure control unit and a temperature control unit of the present invention;
FIG. 6 is a schematic view of the cooling unit structure of the present invention;
FIG. 7 is a graph showing the maximum pressure per minute monitored by the sensor for the fourth press bar clearance according to the present invention;
FIG. 8 shows the pressure distribution of the present invention after the pressure in the press chamber has stabilized;
The drawing comprises a frame 1, a2, a pressing cage 3, a partition board 4, a melt pressure sensor, a 5, a feeding device 6, a feeding motor stop button, a 7, a feeding motor start button, an 8, an automatic control system, an 81, a signal conditioning module 82, an excitation power supply, an 83, a central controller, a 9, a main motor stop button, a 10, a main motor start button, an 11, a speed reducer, a 12, a motor, a 13, a strain gauge sensor, a 131, a temperature compensation strain gauge, a 132, a resistor, a 133, a resistor, a 14, a first pressing bar, a 140, a pressing plate, a 15, a pressing screw shaft, a 16, a water outlet, a 17, a water inlet, an 18, a cooling device, a 180, a hollow main shaft, a 19, a second pressing bar and a 20, and a pressing chamber temperature sensor.
Detailed Description
The invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention are illustrated in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
According to analysis, the invention finds that the common problems of monitoring by manpower in the prior art can be expressed as abnormal changes of the pressure in the press chamber. Meanwhile, the pressure change in the press chamber can also be used for measuring the pressing effect of the screw oil press. Therefore, the invention judges whether the screw oil press works normally or not and predicts the oil pressing efficiency by designing the pressure real-time acquisition system in the press chamber. In addition, a control function is added into the oil press, and the collection function is updated into an automatic control system of the oil press based on pressure by combining pressure and temperature monitoring in the press chamber of the oil press. In the process of the equipment matched with an automatic control system, the real-time pressure distribution in the press chamber can be compared with the pressure curve under the standard working condition. The PLC is used for controlling parameters such as cooling water flow rate, feeding speed, main shaft rotating speed and the like, so that the pressure and the temperature in the press chamber are better controlled. Or the running problems such as slag-off, smooth bore, vehicule and the like can be found in time through abnormal pressure, so that the labor intensity of operators is reduced.
As shown in fig. 1, the invention provides an intelligent low-temperature screw oil press with a pressure monitoring device, which comprises an existing screw oil press, a plurality of pressure monitoring units, a temperature monitoring unit, a cooling unit and an automatic control system. The spiral oil press comprises a frame 1, a press cage 2, a press screw shaft 15, a feeding device 5, a speed reducer 11 and a motor 12, wherein the press screw shaft 15 is arranged in a press chamber of the frame 1, the press screw shaft 15 is electrically connected with the motor 12 through the speed reducer 11, the press cage 2 is sleeved on the press screw shaft 15, a plurality of oil filtering sections separated by a baffle plate 3 are arranged on the press cage 2, a pressure monitoring unit is arranged in each oil filtering section of the press cage 2 and used for monitoring pressure data of each oil filtering section in real time and sending the pressure data to an automatic control system, a temperature monitoring unit is used for monitoring temperature data of different positions in the press chamber and sending the temperature data to the automatic control system, and a cooling unit is used for ensuring that the press chamber is in a low-temperature environment of not higher than 70 ℃ according to control signals sent by the automatic control system.
Preferably, as shown in fig. 2, the automatic control system includes a data acquisition unit, a processing display unit, and a central controller. The central controller comprises a pressure control unit and a temperature control unit, wherein the pressure control unit is used for comparing the pressure value in the acquired press chamber with a pre-stored standard working curve and adjusting the feeding screw speed according to the comparison result through a network communication interface to ensure the pressing effect and the pressing efficiency, the temperature control unit is respectively connected with the temperature monitoring unit and the cooling unit and used for analyzing the temperature distribution condition of the press chamber according to the temperatures of different positions of the press chamber acquired by the temperature monitoring unit and controlling the cooling water flow rate in the cooling unit according to the analysis result so as to achieve the aim of enabling the temperature of the press chamber to be not higher than 70 ℃.
Preferably, the data acquisition unit includes a multi-channel signal conditioning module 81 and an excitation power supply 82, the multi-channel signal conditioning module 81 is used for converting the resistance signal monitored by each pressure monitoring unit into a current signal, and the excitation power supply 82 is used for amplifying the current signal. Wherein the excitation power supply 82 adopts 24V power supply.
Preferably, the processing display unit employs a touch display screen.
Preferably, the pressure control unit adopts a central controller 83, the central controller 83 is used for collecting and comparing the pressure of the press chambers collected by each pressure monitoring unit, timely reflecting the working abnormality in the press chambers and timely reacting, realizing the production problems of smooth chamber, closed car and the like corresponding to the pressure abnormality in the press chambers, controlling the feeding screw and the pressing screw to quickly feed back, and adjusting the pressing pressure in the press chambers. The pressure change in the press chamber corresponds to the abrasion condition of the wearing parts, and the electronic screen prompts the technician about the parts which need to be replaced and the limit time which can be used.
Preferably, as shown in fig. 3, each oil filtering section of the pressing cage 2 comprises a plurality of first pressing bars 14 and a second pressing bar 19, each first pressing bar 14 and each second pressing bar 19 are arranged in a circle along the inner diameter of the pressing cage 2 and are fixed by pressing plates 140, gaskets are respectively arranged between every two adjacent first pressing bars 14, and oil outlet gaps are reserved between every two adjacent first pressing bars 14. Wherein the spacers between adjacent first press bars 14 in each oil filtering section may be provided with different thicknesses to form oil filtering slits of different sizes.
Preferably, as shown in fig. 4, the second press bar 19 is arranged at the middle position of the side surface of the press cage 2, and a threaded hole is formed on the second press bar 19, more preferably, the threaded hole is formed at the center of the side surface of the second press bar 19, and is used for installing a melt pressure sensor in the pressure monitoring unit.
Preferably, each pressure monitoring unit is arranged above the horizontal centre line of the press chamber.
Preferably, each pressure monitoring unit is provided on each oil filtering section of the screw press basket 2, and at least one pressure monitoring unit is provided on each oil filtering section.
Preferably, the pressure monitoring unit comprises a strain gauge sensor 13 and a melt pressure sensor 4. The strain gauge sensor 13 is mounted on at least one first pressing bar 14 on each oil filtering section, the melt pressure sensor 4 is detachably mounted on the second pressing bar 19 through a threaded hole which is formed in the second pressing bar 19 and matched with the size of a detection head of the melt pressure sensor 4, and each strain gauge sensor 13 and each melt pressure sensor are connected with a data acquisition unit in an automatic control system through wires. The strain gauge sensor 13 is used for monitoring the pressure real-time change in the press chamber for a long time, and the melt pressure sensor 4 is used for calibrating the strain gauge sensor 13 periodically. The melt pressure sensor 4 is in contact with the material to directly acquire pressure data, so that the purpose of directly acquiring pressure data of multiple sections of positions is realized, the strain gauge sensor 13 is used for calibrating the indication number of the strain gauge sensor at regular intervals, generally once a month, and because the melt pressure sensor 4 cannot be placed in the press cage 2 for a long time to contact with the material, when the calibration is not needed, the melt pressure sensor 4 is disassembled, and screws are placed in the holes of the second press bar 19, so that material leakage and deformation of the second press bar 19 are avoided.
Preferably, when only one strain gauge sensor 13 is provided in the pressure monitoring unit, it is glued to the outer surface of the ordinary press bar 14 in an adjacent position below the second press bar 19.
Preferably, as shown in fig. 5, when the strain gauge sensor 13 in the pressure monitoring unit is connected with the signal conditioning module 81, in order to simplify the operation and ensure the accuracy of pressure data, the strain gauge sensor 13 in the invention is connected with the signal conditioning module 81 by adopting a half-bridge method. Meanwhile, considering that when bending stress is measured by using the strain gauge, the strain gauge is deformed by the change of the press chamber temperature, and the resistance value of the strain gauge is influenced, the monitoring result is influenced, and therefore the temperature compensation strain gauge 131 is required to eliminate the influence of temperature on the measuring result. The specific connection method is that five bars are independently placed outside the press cage 2, and are kept in contact with the press cage 2, so that the temperature of the bars is the same as that of the common bars 14 in the press chamber. The temperature compensation strain gauge 131 is stuck on the press bars for compensating the temperature change in the press chamber, two precise resistors 132 and 133 are simultaneously used for forming a half-bridge method connection with the strain gauge sensor 13, an output signal is connected with the signal conditioning module 81, the excitation power supply 82 is used for supplying power for amplification, and the analog quantity signal shows the pressure born by the strain gauge on the touch panel after passing through the central controller 83 in the form of current.
Preferably, the temperature monitoring unit is arranged on the partition plate 3 of the press cage 2 for acquiring temperature data of different positions of the press chamber and transmitting to the automatic control system 8.
Preferably, the temperature monitoring unit comprises at least three metal temperature sensors attached to the press section and the discharge section of the press cage 2 for acquiring temperature data at different positions of the press chamber and transmitting to a temperature control unit in an automatic control system.
Preferably, as shown in fig. 6, the cooling unit 18 comprises a water inlet and a water outlet which are arranged on the end shield of the press screw shaft 15 at the cake outlet end, wherein the water inlet is communicated with the hollow main shaft 180 of the press screw shaft 15 through an elongated water pipe, the water outlet is communicated with the circulating water tank, a water inlet valve 17 and a water outlet valve 16 are respectively arranged at the water inlet and the water outlet, and the water inlet valve 17 and the water outlet valve 16 are connected with a temperature control unit in an automatic control system and controlled by the temperature control unit. After the water inlet valve is opened, cooling water flows to the feeding end through an elongated water pipe in the hollow main shaft 180, then flows through the whole press screw shaft 15 in a gap between the hollow main shaft 180 and the water inlet pipe, and returns to the cake outlet end, so that the purpose of cooling the press chamber is achieved. The temperature in the press chamber is controlled below 70 ℃ by matching with a temperature monitoring unit, so that the requirement of low-temperature pressing is met.
Example 1
Fig. 1 is a schematic view showing an installation position of a pressure monitoring device of a barrel of a screw oil press according to an exemplary embodiment of the present invention.
Pressing the main motor start button 10 starts the press spindle. The cooling water inlet manual valve 17 is opened. After 5 minutes, the feeding motor starting button 7 is started, the materials enter the press chamber, and the press is started. The pressure monitoring unit starts to collect data and controls the rotation speed of the motor 12 through the self-control system 8. The touch screen displays real-time pressure values at different positions in the press chamber. When the oil press is closed, the feeding motor stop button 6 is closed first, and then the main motor stop button 9 is closed.
The system can record the pressure applied to the squeezing bar every second, and can be checked in real time. But the display screen only displays the highest pressure value in each minute at different positions of the press chamber, so that the working state of the oil press is conveniently monitored in real time, and meanwhile, the display screen is used for enabling operators to find out the hardware problem in the press chamber in time.
The invention selects the high-temperature melt pressure sensor 4 to calibrate the monitoring indication of the resistance strain gauge sensor 13 regularly, usually once a month. When the pressure in the press chamber is acquired by using two sensors during calibration, when the maximum pressures of the same axial position in each minute acquired by the two sensors are the same, the calibration process is ended.
Taking the fourth gear (i.e. the fourth oil filtering section) press bar 14 gap as an example, as shown in fig. 7, after 11 minutes of starting feeding, the strain gauge sensor 13 detects that the pressure reaches the maximum value of 40MPa. The pressure then drops and after 15 minutes of pressing, the pressure tends to stabilize. The final pressure stabilized in the range of 36-38 MPa.
As shown in fig. 8, the pressure distribution in the press chamber after the pressure is stabilized. 15 minutes after the start of the press, the press chamber pressure tended to stabilize. The highest pressure in the press chamber is stabilized within 36-38 MPa.
After the oil press works stably, the pressed cakes which are mixed in the materials and pressed are pressed, the pressure of the pressing chamber is increased, and the frequency of the feeding screw motor is automatically reduced. After 2 minutes the pressure in the press chamber decreased and tended to stabilize.
After the oil press works stably, the mixed animal fat in the materials is squeezed, the pressure of the squeezing chamber is suddenly reduced, the central controller 83 automatically identifies 'smooth chamber', and the machine is automatically stopped slowly and alarms.
Example 1 shows that the pressure monitoring device of the press chamber can effectively monitor radial pressure of the press chamber, accurately describe a series of pressure dynamic reactions of the screw oil press from starting to adjusting and further under actions such as steady operation and the like, and has important practical significance for controlling the operation of the screw oil press.
Example 2
Fig. 1 is a schematic view showing a structure of a barrel cooling device of a low-temperature screw oil press according to an exemplary embodiment of the present invention.
Pressing the main motor start button 10 starts the press spindle. The cooling water inlet manual valve 17 is opened. After 5 minutes, the feeding motor starting button 7 is started, the materials enter the press chamber, and the press is started. The temperature monitoring unit starts to collect data, and realizes control of cooling water flow through adjustment of the water inlet valve and the water outlet valve. The touch screen displays real-time temperature values at different positions in the press chamber.
As an optimal scheme, the invention adopts an electric regulating valve to regulate the opening of the water inlet and outlet pipe so as to change the flow rate of cooling water.
As shown in fig. 6, the cooling structure of the present invention is shown. 45 minutes after the start of the press, the temperature sensor collected a temperature in the press chamber of more than 50 ℃. The water inlet valve and the water outlet valve of the cooling water are automatically opened, and the cooling water slowly flows into the cooling water pipe. The cooling water flows through the hollow main shaft, fully absorbs heat of the screw, and flows out of the water outlet of the conical shield. Finally, the temperature in the press chamber is stabilized below 70 ℃.
Example 2 shows that the temperature monitoring device of the barrel can effectively monitor the temperature of the barrel, and can ensure that the temperature in the barrel is stabilized below 70 ℃, thus having important application value for optimizing the operation of the low-temperature screw oil press.
The foregoing embodiments are only for illustrating the present invention, wherein the structures, connection modes, manufacturing processes, etc. of the components may be changed, and all equivalent changes and modifications performed on the basis of the technical solutions of the present invention should not be excluded from the protection scope of the present invention.
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020113524941 | 2020-11-27 | ||
| CN202011352494 | 2020-11-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112659617A CN112659617A (en) | 2021-04-16 |
| CN112659617B true CN112659617B (en) | 2025-03-28 |
Family
ID=75406611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011516845.8A Active CN112659617B (en) | 2020-11-27 | 2020-12-21 | An intelligent low-temperature screw oil press with a pressure monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112659617B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113665162B (en) * | 2021-05-13 | 2025-03-07 | 武汉轻工大学 | Screw oil press chamber pressure monitoring device |
| CN114290736A (en) * | 2021-11-17 | 2022-04-08 | 武汉轻工大学 | A pressure monitoring and adjustment device for a screw oil press and a screw oil press |
| CN116027758B (en) * | 2023-03-31 | 2023-07-11 | 广汉市迈德乐食品有限公司 | Automatic butter production line construction method controlled by distributed control system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11326133A (en) * | 1998-03-09 | 1999-11-26 | Nippon Soken Inc | Friction force measuring device for internal combustion engine |
| CN2789011Y (en) * | 2005-01-31 | 2006-06-21 | 忻耀年 | Oil cold press |
| CN204869766U (en) * | 2015-06-17 | 2015-12-16 | 武汉轻工大学 | Single screw rod oil press presses automatic closed loop control system of chamber pressure power and temperature |
| CN214214849U (en) * | 2020-11-27 | 2021-09-17 | 中机康元粮油装备(北京)有限公司 | Intelligent low-temperature spiral oil press with pressure monitoring device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0647975B2 (en) * | 1987-09-03 | 1994-06-22 | 武征 神本 | Fuel injection rate measuring device |
| US5672808A (en) * | 1996-06-11 | 1997-09-30 | Moore Products Co. | Transducer having redundant pressure sensors |
| WO2005110038A2 (en) * | 2004-05-07 | 2005-11-24 | Anderson International Corp. | Screw device |
| JP4441627B2 (en) * | 2004-06-02 | 2010-03-31 | 独立行政法人産業技術総合研究所 | Pressure sensor dynamic calibration apparatus and dynamic calibration method |
| CN104723600B (en) * | 2015-03-16 | 2016-03-02 | 武汉轻工大学 | A kind of thorax internal stress method of testing of 2 screw oil expeller |
| JP6665744B2 (en) * | 2016-09-20 | 2020-03-13 | 横河電機株式会社 | Pressure sensor |
| CN107898464B (en) * | 2017-11-09 | 2020-10-09 | 上海市共进医疗科技有限公司 | System and method for measuring plantar pressure distribution |
| CN108297471B (en) * | 2018-01-23 | 2024-02-20 | 北京工商大学 | A screw oil press that automatically cleans the press row |
| CN108426989A (en) * | 2018-03-09 | 2018-08-21 | 武汉轻工大学 | The monitoring device and monitoring method of extracting spiral of screw oil press axis pressability |
| CN110328884A (en) * | 2019-06-14 | 2019-10-15 | 中国农业科学院油料作物研究所 | A kind of intelligence continous way oil plant squeezer |
-
2020
- 2020-12-21 CN CN202011516845.8A patent/CN112659617B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11326133A (en) * | 1998-03-09 | 1999-11-26 | Nippon Soken Inc | Friction force measuring device for internal combustion engine |
| CN2789011Y (en) * | 2005-01-31 | 2006-06-21 | 忻耀年 | Oil cold press |
| CN204869766U (en) * | 2015-06-17 | 2015-12-16 | 武汉轻工大学 | Single screw rod oil press presses automatic closed loop control system of chamber pressure power and temperature |
| CN214214849U (en) * | 2020-11-27 | 2021-09-17 | 中机康元粮油装备(北京)有限公司 | Intelligent low-temperature spiral oil press with pressure monitoring device |
Non-Patent Citations (2)
| Title |
|---|
| 植物油料三维动态螺旋压榨膛内压力测试方法及实验研究;陈戈;中国优秀硕士学位论文全文数据库(工程科技I辑);20160615;7-23 * |
| 油莎豆低温螺旋压榨设备与榨膛压力研究;姚占斌;中国优秀硕士学位论文全文数据库 (工程科技Ⅰ辑);20210228;B018-115 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112659617A (en) | 2021-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112659617B (en) | An intelligent low-temperature screw oil press with a pressure monitoring device | |
| CN214214849U (en) | Intelligent low-temperature spiral oil press with pressure monitoring device | |
| EP0347055B1 (en) | On-line rheological measurements | |
| CN108426989A (en) | The monitoring device and monitoring method of extracting spiral of screw oil press axis pressability | |
| CN108344572A (en) | A kind of wet clutch sliding wear process oil contamination tolerance level test method and device | |
| CN116795009A (en) | Energy-saving control system of variable-flow variable-pressure water supply unit | |
| CN209800842U (en) | Valve regulator | |
| CN113266561B (en) | Test bed and test method suitable for reliability test of gas turbine lubricating oil pump | |
| CN112895558B (en) | A testing machine for oil extraction based on on-line in-situ monitoring | |
| CN116928886B (en) | Chemical industry conduction oil stove safety supervision system based on multivariable | |
| CN219636212U (en) | Balanced sugarcane feeding control device of sugarcane pressing chain belt machine | |
| CN208224027U (en) | A kind of transmission-type under environment with pressure visual iron spectrometer online | |
| US20240069499A1 (en) | Device assembly and method for controlling an integrated continuous pharmaceutical or biopharmaceutical manufacturing process | |
| US12098966B2 (en) | Differential pressure monitor with a calibration process and system | |
| CN216482183U (en) | Automatic measuring and pressure releasing device for calcium carbide furnace | |
| CN110926353B (en) | Intelligent casing monitoring system | |
| CN208421568U (en) | A kind of automatic Regulating System of biomass carbonated purification system | |
| CN115079658B (en) | Intelligent production line monitoring system | |
| CN206671918U (en) | A kind of heating automatic control system of more pressure reaction stills | |
| CN219522973U (en) | Rubber extruder with exhaust pressure material function | |
| CN111398081A (en) | Online detection device and method for melt index of high molecular polymer | |
| CN111844835A (en) | Rubber tube production line control system and method | |
| CN119336110B (en) | Dual-liquid flow control system for copper-clad aluminum material production | |
| CN208224026U (en) | A kind of transmission-type under no pressure visual iron spectrometer online | |
| CN218567340U (en) | Multi-parameter water quality online monitoring device for water supply pipe network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |