Horizontal full-automatic hydraulic oil press

Abstract

This invention belongs to the field of oilseed pressing technology, and proposes a horizontal fully automatic hydraulic oil press, including a frame, a power source, and a pressing plate assembly mounted on the frame that can reciprocate and open / close. The power source includes a main power source, a first auxiliary power source, and a second auxiliary power source. The main power source drives the pressing plate assembly to reciprocate, and the first and second auxiliary power sources respectively drive the pressing plate assembly to open and close. This invention avoids the problems of unstable spring return force, poor pressing plate return accuracy (verticality and coaxiality), difficulty in ensuring adjustment accuracy, and difficulty in replacement that exist in the prior art where the pressing process uses spring return.

Description

Technical Field

[0001] This invention belongs to the field of oilseed pressing technology, specifically relating to a horizontal hydraulic oil press. Background Technology

[0002] A horizontal hydraulic oil press is a device that uses hydraulic power to squeeze and press oilseeds to obtain oil. Compared with a vertical oil press, a horizontal hydraulic oil press can solve the problems of manual material packaging and manual cake removal, achieving continuous pressing operations and a higher degree of automation. Currently, most horizontal hydraulic oil presses are "spring-storage unidirectional pressing systems." Their core working principle is to use a unidirectional hydraulic cylinder to provide high-pressure thrust to compress the oilseeds, while simultaneously compressing the spring assembly to store elastic potential energy. During the reset phase, the separation of the pressing plate assembly and automatic cake removal are achieved with the help of the auxiliary cylinder pulling or the spring releasing its rebound force. However, this spring-based reset process suffers from problems such as unstable reset force, poor pressing plate reset accuracy (verticality and coaxiality), difficulty in ensuring adjustment accuracy, and the difficulty in replacing fatigued and damaged springs.

[0003] In addition, the pressing plate assembly, as the core working component of the equipment, faces multiple challenges due to the high pressure (up to 80 MPa) of the pressing chamber system, such as high temperature in the pressing chamber and seal failure. High temperatures typically lead to the inactivation of heat-sensitive nutrients in the oil and denaturation of the oilseed meal proteins, while seal failure results in material leakage from the pressing chamber, causing not only economic losses but also safety hazards. In existing technologies, the pressing plate, as the most direct contact component of the pressing chamber, is mostly a single solid structure or an independent part with a relatively limited function, failing to fulfill its role as a core component.

[0004] To solve the above problems, it is necessary to innovate the working principle of the horizontal hydraulic oil press and the structure and function of the pressing disc. Summary of the Invention

[0005] The purpose of this invention is to provide a horizontal fully automatic hydraulic oil press that eliminates the need for springs and adopts a bidirectional drive power source to achieve automatic return, thereby solving the problems mentioned in the background art.

[0006] The technical solution for achieving the above-mentioned objective of this invention is as follows: A horizontal fully automatic hydraulic oil press includes a frame, a power source, and pressing plate assemblies mounted on the frame that can reciprocate and open / close. There are 2 to 8 pressing plate assemblies, which are connected in series on the frame. The power source includes a primary power source, a first auxiliary power source, and a second auxiliary power source. The primary power source drives the pressing plate assembly to reciprocate, and the first and second auxiliary power sources respectively drive the pressing plate assembly to open and reset.

[0007] The main power source is the main hydraulic cylinder, with a diameter-to-pressing chamber diameter ratio of 1.2 to 1.3. The main power source is a piston hydraulic cylinder, and the first and second auxiliary power sources are the cake unloading cylinder and the reset cylinder, respectively. The pressure applied to the pressing plate assembly by the main power source is 15 to 27.5 MPa. The system maximum is 27.5 MPa, but in actual use it is 25 MPa.

[0008] The active power source of this invention adopts a piston hydraulic cylinder, which can drive the pressing plate assembly to reciprocate in both directions. It can realize the automatic return of the pressing plate assembly after pressing, and solves the problems of unstable reset force, poor pressing plate reset accuracy (perpendicularity and coaxiality), difficulty in ensuring adjustment accuracy, easy fatigue of springs and difficulty in replacement caused by the existing plunger hydraulic cylinder as the pressing power source, which can only work in one direction and must rely on spring force for return.

[0009] As a further improvement of the present invention, each pressing plate assembly includes pressing plate assembly A and pressing plate assembly B, which are connected by a locking module; pressing plate assembly A includes pressing plate A and pressing disc assembly, pressing plate assembly A is a cuboid with a circular hole in the middle, and pressing disc assembly is placed at the circular hole in the middle of pressing plate assembly A; pressing plate assembly B includes pressing plate B and pressing ring (the pressing ring is a ring embedded in the circular hole of pressing plate B) disposed on pressing plate B. Between each pressing plate assembly, the pressing ring and the pressing disc assemblies on both sides form a pressing chamber; under the drive of the active power source, the front pressing ring slides back and forth along the outer surface of the rear pressing disc assembly, realizing the change of the pressing chamber volume; the active power source (25) drives the pressing plate assembly to move to the right, the pressing chamber volume decreases to realize the pressing action, and moves to the left to realize the pressing chamber volume reset; then the first auxiliary power drives the pressing plate assembly B to move to the right, the locking module opens to separate the pressing plate assembly B from the pressing plate assembly A, the pressing chamber opens, and the cake formed after pressing falls off; then the second auxiliary power drives the pressing plate assembly B to move to the left, and under the action of the locking module, it relocks with the pressing plate assembly A to realize the reset, completing one pressing operation.

[0010] The pressing disc assembly includes a pressing disc and a flow channel disc. The pressing disc has a hollow cylindrical structure. The flow channel disc is disposed in the hollow area of ​​the pressing disc. The pressing disc is disposed on the pressing plate A. An oil collecting disc is fixed to the end face of the pressing disc.

[0011] The pressing disc may have an oil collecting tray fixed to both ends or only one end. The pressing plate assembly and its structure between the mounting plates near the two ends of the frame can be adapted to the requirements of installation and overall structure. For example, no oil collecting tray may be installed on the left side of the pressing disc near the left mounting plate of the frame; a set of pressing disc assemblies with an oil collecting tray only on the left side may be installed on the right side of the pressing plate assembly near the right mounting plate.

[0012] The main reasons for the temperature rise in the pressing chamber are twofold: first, the frictional heat generated by the pressing disc sliding along the inner wall of the pressing ring; and second, the conversion of the compression work during pressing into internal energy (the mechanical energy of the oilseeds is directly converted into their internal energy through work during high-pressure extrusion, leading to a temperature increase). If the oil cannot be discharged from the pressing chamber in a timely manner during pressing, it will also cause an abnormal rise in the pressing chamber temperature and an increase in back pressure. The main reasons for pressing chamber seal failure include excessive back pressure leading to seal ring failure and fatigue damage caused by prolonged high pressure.

[0013] Therefore, the end face and the interior of the pressing disc are respectively provided with end face flow channels and internal flow channels; the end face flow channels include annular flow channels and vertical flow channels. The annular flow channels are distributed in a ring shape from the center to the outside on the end face of the pressing disc, and the vertical flow channels are distributed in a vertical direction on the end face; the internal flow channels are connected to the end face flow channels, and the internal flow channels start from the two end faces of the pressing disc and extend inward to converge to the oil outlet channel provided in the pressing plate A.

[0014] When installing the pressing disc assembly, the vertical flow channel is perpendicular to the horizontal plane, which effectively ensures that the oil passing through the oil collecting disc flows smoothly downwards. This effectively avoids the problem in previous pressing equipment where the oil channels of the oil collecting disc and the pressing disc had to be matched one-to-one (even a slight misalignment of the oil channels would affect the flow of oil), thus improving overall efficiency.

[0015] Preferably, the flow channel plate is a combination of two coaxial cylinders with different diameters. The end face of the larger diameter end is on the same plane as one end face of the pressing plate and is provided with an annular flow channel and a vertical flow channel that match the flow channel on the end face of the pressing plate. The outer wall of the flow channel plate is provided with spiral patterns. The spiral patterns and the nested inner wall of the pressing plate together form a spiral channel with inlet and outlet, and the spiral channel is used for the flow of temperature control medium.

[0016] Furthermore, the pressing plate assembly A also includes an oil outlet pipe and an oil receiving tray A. The oil outlet pipe is connected to the oil outlet channel, and the oil receiving tray A is used to collect the oil that leaks out from the oil collection tray. The oil after pressing and filtering by the oil collecting plate is collected by the end face flow channel and the internal flow channel and flows out through the oil outlet channel and the oil outlet pipe; The press plate assembly B also includes an oil receiving tray B, which is used to collect leakage from the press ring. The leakage can be treated again.

[0017] More preferably, the internal flow channel is set at an angle to the horizontal direction and is located on the lower side inside the pressing disc; the internal flow channel and the end face flow channel are connected at the intersection of the annular flow channel and the vertical flow channel.

[0018] More preferably, this horizontal fully automatic hydraulic oil press also includes a feeding system disposed on the pressing plate assembly, the feeding system including a feeding conveying device and a locking mechanism; The locking mechanism includes a barrel, a valve stem disposed inside the barrel, a valve stem cylinder for driving the valve stem, a valve block for locking the movement of the valve stem, and a locking cylinder for driving the movement of the valve block; the barrel is fixed above the pressing plate B, and the pressing plate B and the pressing ring are provided with feeding channels, and the valve stem is matched with the inlet of the feeding channel; After the feeding and conveying device has finished conveying the oil, the valve stem cylinder drives the valve stem downward to block the inlet of the feeding channel (18), and then the locking cylinder drives the valve block to insert into the groove of the valve stem to lock the valve stem, so that the pressing chamber is in a sealed state.

[0019] The valve block is a wedge-shaped block, and the valve stem is provided with a matching wedge-shaped groove; The valve stem is provided with a guide groove, and a boss is provided on the valve stem head, the boss matching the lower end of the feed channel; the barrel is provided with a guide rod, the guide rod matching the guide groove, and the valve stem can slide up and down along the guide rod; The valve stem descends along the guide rod, and the boss on the valve stem head fits against the lower end of the feed channel to seal the pressing chamber. Then, the locking cylinder drives the valve block to insert into the slot, locking the valve stem in place. This valve stem + valve block structure solves the problem of large feed inlet diameter and poor sealing.

[0020] Another preferred embodiment of the present invention further includes an oil collection module, which includes a weighing oil box, an oil storage box, a first oil receiving tray, and a second oil receiving tray; the oil flowing out of the oil outlet pipe flows into the weighing oil box through the first oil receiving tray, and the oil and leaked slurry collected by the oil receiving trays A and B converge into the oil storage box through the second oil receiving tray.

[0021] The beneficial effects of this invention are as follows: 1. The working principle of the horizontal fully automatic hydraulic oil press has been innovated, eliminating the need for springs. The main power source adopts a piston hydraulic cylinder, which can drive the pressing plate assembly in both directions, avoiding the problems of unstable spring return force, poor pressing plate return accuracy (verticality and coaxiality), difficulty in ensuring adjustment accuracy, and difficulty in replacing springs that exist with spring return.

[0022] 2. The pressing disc is equipped with a flow channel structure, which increases the oil outlet area and ensures rapid oil discharge, avoiding problems such as "liquid hammer" and "screen penetration" caused by abnormal back pressure increase in the pressing chamber. In addition, a flow channel plate with a spiral channel is set inside the pressing disc, which increases the contact area between the temperature control liquid and the pressing disc, reduces the preheating time of the equipment, and ensures that the temperature of the pressing chamber is in a relatively stable state. This ensures the activity of heat-sensitive nutrients in the oil and the protein activity in the cake, and reduces or avoids the risk of accelerated aging and failure of the sealing ring caused by excessively high pressing chamber temperature.

[0023] 3. The inlet diameter was increased, improving the feeding speed of oilseed pellets and avoiding problems such as feeding bridging. The inlet is located at the bottom of the feeding channel. In existing technologies, pressing equipment feeds slurry, which has good fluidity and whose cell walls are broken down after pulping, allowing the oil in the cells to be extracted. Therefore, the pressing pressure does not need to be very high. However, slurry pressing has many drawbacks. Therefore, this study changed to whole-material or pellet pressing, which requires a larger inlet. Otherwise, the material will not easily enter the pressing chamber. Thus, the inlet was enlarged, but this also brought about the problem of poor sealing.

[0024] 4. Furthermore, a wedge-shaped valve stem structure is used to seal the feed channel, solving the problem of difficulty in sealing the sealing cavity caused by increased lateral pressure in the pressing chamber due to the enlarged feed inlet diameter. The wedge structure transfers the lateral high-pressure force transmitted from the pressing chamber to the barrel, reducing the stress on the locking cylinder. Simultaneously, the wedge-shaped valve stem structure generates a self-locking effect under high pressure, increasing the sealing reliability at the feed inlet of the sealing cavity and preventing oil backflow from the pressing chamber. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the horizontal fully automatic hydraulic oil press in the embodiment.

[0027] Figure 2 yes Figure 1 A cross-sectional view of a horizontally mounted fully automatic hydraulic oil press along plane AA. The arrow in the diagram points to the left.

[0028] Figure 3 This is a partial structural schematic diagram of the horizontal fully automatic hydraulic oil press in the embodiment.

[0029] Figure 4This is a schematic diagram of the press plate assembly in the embodiment.

[0030] Figure 5 yes Figure 4 A cross-sectional view of the intermediate pressing plate assembly along the CC direction.

[0031] Figure 6 This is a schematic diagram of the structure of the press plate assembly A in the embodiment.

[0032] Figure 7 This is a schematic diagram of the structure of the press plate assembly B in the embodiment.

[0033] Figure 8 This is a schematic diagram of the pressing disc assembly in the embodiment.

[0034] Figure 9 This is a schematic diagram of the flow channel disk in the embodiment.

[0035] Figure 10 This is a structural schematic diagram of the flow channel plate from another perspective in the embodiment.

[0036] Figure 11 This is a schematic diagram of the feeding system in the embodiment.

[0037] Figure 12 yes Figure 12 Cross-sectional view of the feed system along the DD direction.

[0038] Figure 13 This is a schematic diagram of the feeding system during feeding in the embodiment.

[0039] Figure 14 This is a schematic diagram of the feeding system during pressing in the embodiment.

[0040] Figure 15 This is a schematic diagram of the base assembly structure of the horizontal fully automatic hydraulic oil press in the embodiment.

[0041] Figure 16 yes Figure 15 A cross-sectional view of the CIMC oil module on the BB plane.

[0042] Figure 17 This is a schematic diagram of the oil collection module in the embodiment.

[0043] Figure 18 This is a schematic diagram of the weighing oil box in the embodiment.

[0044] Figure 19 This is a schematic diagram of the structure of the oil storage box and oil collection tray in the embodiment.

[0045] Among them: 100 pressing plate assembly, 101 pressing plate assembly A, 102 pressing plate assembly B, 103 pressing disc assembly; 200 feeding system; 300 oil collection module; 400 base assembly; 1. Pressing plate A, 2. Oil collecting tray, 3. Pressing disc, 4. Pressing plate B, 5. Pressing ring, 6. Annular flow channel, 7. Vertical flow channel, 8. Spiral pattern, 9. Oil outlet pipe, 10. Oil receiving tray A, 11. Oil outlet channel, 12. Oil receiving tray B, 13. Barrel, 14. Valve stem, 15. Valve stem cylinder, 16. Valve block, 17. Locking cylinder, 18. Feed channel, 19. Groove, 20. Boss, 21. Screw conveyor, 22. Screw conveyor motor, 23. Feed hopper, 24. Locking module, 25. Main power source, 26. First auxiliary power, 27. Second auxiliary power, 28. Weighing oil 29 First oil receiving tray, 30 Second oil receiving tray, 31 Guide rod, 32 Guide groove, 33 Internal flow channel, 34 Flow channel plate, 35 First guide post, 36 Second guide post, 37 Third mounting plate, 38 Second mounting plate, 39 Flow channel cover plate, 40 Fixed distance pull plate, 41 First mounting plate, 42 Parallel guide rail, 43 Inlet connector, 44 Outlet connector, 45 Extension connector, 46 Oil storage box, 47 Oil outlet interface, 48 Handle, 49 Slot, 50 Weighing module, 51 Main oil cylinder bracket, 52 Guide rail bracket, 53 Sealing ring. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the present invention clearer, the invention will be described clearly and completely below in conjunction with specific embodiments. It should be understood that the terms "center," "vertical," "horizontal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0047] Example 1

[0048] This embodiment provides a horizontal fully automatic hydraulic oil press, such as... Figure 1-3 As shown, it includes a frame, a power source, and a pressing plate assembly 100 mounted on the frame that can reciprocate and open / close. In this embodiment, there are a total of 6 pressing plate assemblies 100, which are arranged in series on the frame; The power source includes a primary power source 25, a first auxiliary power source 26, and a second auxiliary power source 27. The primary power source 25 drives the pressing plate assembly 100 to reciprocate, and the first auxiliary power source 26 and the second auxiliary power source 27 respectively drive the pressing plate assembly 100 to open and reset. The primary power source 25 is a piston hydraulic cylinder.

[0049] In this invention, the maximum pressure of the hydraulic station is 25 MPa (the hydraulic station is not shown in the diagram; it serves as the power source). While maintaining the original diameter of the pressing chamber, the specific pressure of the pressing chamber is increased by increasing the diameter of the main cylinder. In this embodiment, the diameter of the pressing chamber is 422 mm, and the diameter of the main cylinder is 540 mm, with a ratio of approximately 1.28 between the main cylinder diameter and the pressing chamber diameter. This design addresses the performance requirements of the equipment's motor and valve components in the ultra-high pressure (50 MPa) working environment of previous hydraulic stations, and improves the safety of the working environment.

[0050] Each press plate assembly 100 includes a press plate assembly A101 and a press plate assembly B102 connected by a locking module 24; as Figure 4-7 As shown, the pressing plate assembly A101 includes a pressing plate A1 and a pressing disc assembly 103. The pressing plate assembly A101 and the pressing plate assembly B102 are connected by a locking module 24. In this embodiment, the locking module 24 is a locking buckle, which is opened and closed by pressure. Each pressing plate assembly 100 is provided with two sets of locking buckles.

[0051] In this application, the first auxiliary power 26 and the second auxiliary power 27 are respectively the unloading cylinder and the reset cylinder. This embodiment uses... Figure 1 Taking the direction shown in the view as an example, after the piston hydraulic cylinder drives the pressing plate assembly 100 to complete the pressing (reciprocating motion) action, the cake unloading cylinder starts to pull the pressing plate B to the right to overcome the opening pressure of the locking buckle, realizing the separation of pressing plate assembly A101 and pressing plate assembly B102. Then, the reset cylinder pulls the pressing plate assembly B to the left. At this time, the pulling force is greater than the opening force of the locking buckle, and the locking buckle closes and locks, realizing the locking and reset of pressing plate assembly A101 and pressing plate assembly B102.

[0052] like Figure 6 , 8 As shown, the pressing disc assembly 103 includes a pressing disc 3 and a flow channel disc 34. The pressing disc 3 has a hollow cylindrical structure, and the flow channel disc 34 is nested within the hollow area of ​​the pressing disc 3. The pressing disc 3 is nested on the pressing plate A1. Oil collecting discs 2 are fixed to both ends of the pressing disc 3, and filter screens are fixed on the oil collecting discs 2. The oil collecting discs 2 and filter screens are existing technology and will not be described further. The pressing plate assembly B102 (as shown) Figure 7 It includes a pressing plate B4 and a pressing ring 5 nested on the pressing plate B4, and also includes a flow channel cover plate 39, through which the pressing ring 5 is fixed to the pressing plate B.

[0053] The pressing plate assembly 100 is mounted on the frame via mounting plates and guide columns, and slides back and forth along the slide rail under the action of a power source. At least two sets of pressing plate assemblies 100 are provided; in this embodiment, six sets are provided. The six sets of pressing plate assemblies 100 are positioned between the front and rear mounting plates on the frame: the second mounting plate 38 and the first mounting plate 37. The structures of pressing plate assemblies A and B near the second mounting plate 38 and the first mounting plate 37 of the frame are adapted to the requirements of installation and overall structure. For example, near the second mounting plate 38, the left side of the pressing plate 3 does not have an oil collecting tray 2 installed; near the first mounting plate 37, on the right side of pressing plate assembly B, a pressing plate assembly 103 with an oil collecting tray 2 only on the left side is also provided. Figure 3 ).

[0054] Between each pressing plate assembly 100, the pressing ring 5 forms a pressing chamber with the adjacent pressing disc assemblies 103 on both sides. Driven by the active power source 25, the stroke between two adjacent pressing plate assemblies 100 is limited by the spacer plate 40. The preceding pressing ring 5 slides back and forth along the outer surface of the following pressing disc assembly 103, realizing the change in the volume of the pressing chamber. The active power source 25 drives the pressing plate assembly 100 to move to the right, reducing the volume of the pressing chamber and realizing the pressing action; moving to the left restores the volume of the pressing chamber.

[0055] After the pressing action is completed, the first auxiliary power 26 drives the pressing plate assembly B102 to move to the right, and the locking module 24 opens to separate the pressing plate assembly B102 from the pressing plate assembly A101, the pressing chamber opens, and the cake formed after pressing falls off; then the second auxiliary power 27 drives the pressing plate assembly B102 to move to the left, and under the action of the locking module 24, it re-locks with the pressing plate assembly A101 to achieve reset, completing one pressing operation.

[0056] like Figure 4-6 As shown, the present invention provides end face flow channels and internal flow channels 33 on the end face and inside of the pressing disc 3, respectively, to increase the oil outlet area, so as to quickly discharge the oil and avoid the problem of leakage due to abnormal increase of back pressure in the pressing chamber and leakage due to overload damage of the sealing structure.

[0057] See Figure 8-10 The end face flow channel includes an annular flow channel 6 and a vertical flow channel 7. The annular flow channel 6 is distributed in a ring shape from the center outward on the end face of the pressing disc 3, and the vertical flow channel 7 is distributed in a vertical direction on the end face of the pressing disc 3.

[0058] The internal flow channel 33 is connected to the end face flow channel. In this embodiment, the internal flow channel 33 extends inward from the two end faces of the pressing plate 3 and intersects with them, and is connected to the oil outlet channel 11 provided on the pressing plate A1.

[0059] The internal flow channel 33 is located on the lower side inside the pressing disc 3, which facilitates the flow of oil out of the oil outlet channel 11. The internal flow channel 33 and the end face flow channel are connected at the intersection of the annular flow channel 6 and the vertical flow channel 7, which facilitates the convergence and inflow of oil collected in the end face flow channel into the internal flow channel 33.

[0060] Under the influence of gravity, the oil flows downwards on the end face of the pressing disc 3, with the largest amount of oil accumulating at the bottom. Therefore, in this embodiment, the outermost diameter of the annular flow channel is set to 12-16 mm, and the remaining annular flow channel diameters are 6-10 mm. Similarly, the diameter of the internal flow channel 33 at the bottom of the pressing disc 3 is 12-16 mm, and the remaining internal flow channel diameters are 6-10 mm. The vertical flow channel diameter is 6-10 mm. This embodiment includes five annular flow channels, five vertical flow channels, and five internal flow channels 33.

[0061] In this embodiment, the outermost ring of the annular flow channel has a diameter of 14 mm, and the remaining annular flow channels have a diameter of 7 mm; the inner flow channel 33 at the bottom of the pressing disc 3 has a diameter of 12 mm, and the remaining inner flow channels 33 have a diameter of 8 mm; the vertical flow channel 7 has a diameter of 8.2 mm. Five sets of the annular flow channels 6, vertical flow channels 7, and inner flow channels 33 are respectively provided to expand the oil outlet area and coordinate liquid guidance.

[0062] The vertical flow channel 7, the annular flow channel 6, and the internal flow channel 33 expand the oil outlet area, ensuring timely and rapid oil outflow. This effectively reduces and avoids back pressure rise in the pressing chamber caused by the inability of oil to be discharged in time during the pressing process, as well as back pressure rise leading to liquid hammer, screen penetration, oil quality degradation, and damage to the sealing structure.

[0063] The end face of the flow channel plate 34 is provided with an annular flow channel 6 and a vertical flow channel 7 that match the flow channel on the end face of the pressing plate 3 (e.g., Figure 9 The cylindrical surface of the flow channel disk 34 is provided with spiral patterns 8 (e.g., Figure 10 The spiral pattern 8 and the nested inner wall of the pressing disc 3 together form a spiral channel with inlet and outlet, which is used for temperature-controlled liquid / gas flow. The inlet and outlet of the spiral channel are connected to the inlet connector 43 and the outlet connector 44, respectively, for temperature-controlled liquid / gas inflow and outflow. An extension connector 45 is also provided on the pressing disc 3. The two sides of the extension connector 45 are connected to the pressing chamber and the external air pressure, respectively, so that the negative pressure state of the pressing chamber can be restored to atmospheric pressure when the pressing chamber volume is reset, reducing the return resistance.

[0064] This embodiment uses a liquid temperature control medium, such as water or heat transfer oil. Using water for heating effectively avoids the low gas-solid heat exchange efficiency problem associated with steam preheating, as well as issues like "water hammer" caused by condensation in the steam pipes, difficulty in temperature control, and uneven heat transfer. During cold pressing, the pressing temperature is controlled at 65-75 degrees Celsius.

[0065] Because water has a high specific heat capacity and a large contact area between the water and the pressing disc 3, the temperature of the pressing chamber can be quickly adjusted to a predetermined range during the entire pressing process when the equipment temperature is insufficient or excessively high. This reduces temperature fluctuations and ensures that the pressing chamber temperature remains within a relatively constant range. Temperature adjustment is typically achieved by changing the liquid temperature and flow rate based on sensor feedback.

[0066] The spiral channel between the flow channel plate 34 and the pressing plate 4 in this invention increases the contact area between the temperature-controlled liquid and the pressing plate 4, reducing preheating time for preheating the pressing equipment before pressing. For heat dissipation, it effectively reduces the temperature rise in the pressing chamber caused by increased system pressure, ensuring a relatively stable temperature within the chamber. This preserves the activity of heat-sensitive nutrients in the oil and prevents protein denaturation in the cake, while also reducing or avoiding the risk of accelerated aging and failure of the sealing rings due to excessively high pressing chamber temperatures.

[0067] To enhance the sealing reliability of the pressing chamber, a sealing ring 53 is provided on the circumferential surface at the connection between the pressing disc 3 and the oil collecting disc 2. The sealing ring 53 is in contact with the inner surface of the pressing ring 5.

[0068] This horizontal fully automatic hydraulic oil press also has a feeding system 200 on the pressing plate assembly 100 (such as...). Figure 1-3 (As shown). To solve the problem of material backflow caused by sealing failure at the feed inlet of the pressing chamber, a locking mechanism is provided on the feeding system 200 in this embodiment.

[0069] like Figure 11-12 As shown, the feeding system 200 includes a feeding conveying device and a locking mechanism. The feeding conveying device 201 includes an inclined screw conveyor 21, a screw conveying motor 22 that drives the screw conveyor 21, and a feeding hopper 23 disposed above the screw conveyor 21.

[0070] Combination Figure 11-14 As shown, the locking mechanism includes a barrel 13, a valve stem 14 disposed within the barrel 13, a valve stem cylinder 15 driving the valve stem 14, a valve block 16 locking the movement of the valve stem 14, and a locking cylinder 17 driving the movement of the valve block 16. The barrel 13 is fixed on the pressing plate B4, and the pressing plate B4 and the pressing ring 5 are provided with a feeding channel 18, and the valve stem 14 is matched with the inlet of the feeding channel 18.

[0071] Figure 13 and Figure 14 The positional relationship between the valve stem 14 and the valve block of the locking mechanism at the feeding position and the pressing position of the feeding system 200 is shown respectively. After the feeding conveyor has finished conveying the oil, the valve stem cylinder 15 drives the valve stem 14 downward to block the inlet of the feeding channel 18. Then, the locking cylinder 17 drives the valve block 16 to insert into the slot 19 of the valve stem 14 to lock the valve stem 14, so that the pressing chamber is in a sealed state.

[0072] In this embodiment, the valve block 16 is a wedge-shaped block, and the valve stem 14 is provided with a matching wedge-shaped groove. During locking, the high-pressure force transmitted from the pressing chamber is transferred to the barrel through the wedge structure, reducing the stress on the locking cylinder. This effectively solves the problem of backflow at the feed inlet caused by excessive pressure in the pressing chamber.

[0073] The valve stem 14 is provided with a guide groove 32, and a boss 20 is provided on its stem head. The boss 20 matches the lower end of the feed channel 18. The barrel 13 is provided with a guide rod 31, which matches the guide groove 32. The valve stem can slide up and down along the guide rod 31.

[0074] The valve stem 14 moves down along the guide rod 31. The boss 20 on the head of the valve stem 14 fits against the lower end of the feed channel 18 to close the pressing chamber. Then, the locking cylinder 17 drives the valve block 16 to insert into the slot 19 to lock the valve stem 14.

[0075] In this embodiment, the feed channel 18 has a diameter of 44mm. Compared with the traditional feed inlet diameter for slurry and small oilseed particles (generally around 12mm), the feed inlet diameter is increased by nearly 400%, and the feed inlet area is increased by nearly 13 times. The feed inlet area has achieved a change in magnitude compared to before, effectively accelerating the feeding speed of granular oilseeds such as walnuts, hemp seeds, flax seeds, and camellia seeds. It effectively avoids problems such as bridging when feeding through small feed inlets and also saves the pre-processing steps of cutting large oilseed particles into cubes.

[0076] like Figure 4 , 6 As shown, the pressing plate assembly A101 also includes an oil outlet pipe 9 and an oil receiving tray A10. The oil outlet pipe 9 is connected to the oil outlet channel 11, and the oil receiving tray A10 is used to collect the oil leaking from the oil collecting tray 2. The oil after pressing and filtering in the oil collecting tray 2 is collected by the end face flow channel and the internal flow channel 33 and flows out through the oil outlet channel 11 and the oil outlet pipe 9. Figure 4 , 7 As shown, the press plate assembly B102 also includes an oil receiving tray B12, which is used to collect leakage from the press ring 5. The arrangement of oil receiving trays A and B can collect and separate different leakage materials, avoiding waste and equipment contamination.

[0077] See Figure 15 This horizontal fully automatic hydraulic oil press also includes a base assembly 400, which includes a main cylinder support 51 and two guide rail supports 52 fixed on the main cylinder support 51. Parallel guide rails 42 and an oil collection module 300 are provided on the guide rail supports 52. The pressing plate assembly 100, mounted on the frame, can slide along the parallel guide rails 42. To reduce the friction of the pressing plate assembly 100 sliding on the parallel guide rails 42 and to accelerate heat dissipation, a copper slider is provided at the bottom of the pressing plate B.

[0078] In this embodiment, the pressing plate assembly A101 is slidably mounted on four first guide posts 35 and four second guide posts 36. The front, middle, and rear ends of the four first guide posts 35 are respectively fixed to the first mounting plate 41, the second mounting plate 38, and the third mounting plate 37, and the second guide posts 36 are fixed to the third mounting plate 37. The pressing plate assembly B102 is slidably mounted on the four second guide posts. The pressing plate B is provided with guide holes that match the first guide posts 35 and the second guide posts 36, and the pressing plate A is provided with guide holes that match the second guide posts 36. Guide sleeves are also provided in the guide holes to reduce friction.

[0079] An oil collection module 300 is also provided on the base assembly 400 (e.g., Figure 16-19 The oil collection module 300 includes a weighing oil box 28, an oil storage box 46, a first oil receiving tray 29, and a second oil receiving tray 30. The oil flowing out of the oil outlet pipe 9 flows into the weighing oil box through the first oil receiving tray 29, and the oil and leaked slurry collected by the oil receiving trays A10 and B12 converge into the oil storage box 46 through the second oil receiving tray 30.

[0080] Oil outlet ports 47 are provided at both ends of the weighing oil box 28 for oil transfer. To facilitate the loading and unloading of the weighing oil box 28 and the oil storage box 46, handles 48 and slots 49 are provided on the weighing oil box 28 and the oil storage box 46 respectively.

[0081] An oil storage box 46 is inserted into the weighing oil box 28, and a weighing module 50 is disposed below the weighing oil box 28. In this embodiment, the weighing module 50 is a pressure sensor. When the oil storage box 46 is inserted into the weighing oil box 28, the weighing module 50 can weigh the entire volume; when only the weighing oil box 28 remains, it can weigh the oil output separately. The overall design facilitates the statistics of oil output and the calculation of oil yield. When the weighing oil box 28 reaches a certain weight, the oil and oil residue are transferred for subsequent refining processing.

[0082] Example 2 This embodiment provides a horizontal fully automatic hydraulic oil press, which includes a frame, a power source, and pressing plate assemblies 100 mounted on the frame that can reciprocate and open / close. In this embodiment, there are four pressing plate assemblies 100, arranged in series on the frame. The power source includes a main power source 25, a first auxiliary power source 26, and a second auxiliary power source 27. The main power source 25 drives the pressing plate assemblies 100 to reciprocate, and the first and second auxiliary power sources 26 and 27 respectively drive the pressing plate assemblies 100 to open and close. The main power source 25 is a piston hydraulic cylinder, and the pressure applied by the main power source 25 to the pressing plate assemblies 100 is 20-25 MPa.

[0083] In this embodiment, the outermost ring of the annular flow channel has a diameter of 12mm, and the remaining annular flow channels have a diameter of 6mm; the inner flow channel 33 at the bottom of the pressing disc 3 has a diameter of 10mm, and the remaining inner flow channels 33 have a diameter of 6mm; the vertical flow channel 7 has a diameter of 8.0mm. A total of 6 sets of the annular flow channels 6, vertical flow channels 7, and inner flow channels 33 are provided to expand the oil outlet area and facilitate liquid guidance.

[0084] In this embodiment, heat transfer oil is used as the temperature control medium.

[0085] Other settings are the same as in Example 1.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A horizontal fully automatic hydraulic oil press, characterized in that: It includes a frame, a power source, and a pressing plate assembly (100) mounted on the frame that can reciprocate and open and close. There are 2 to 8 pressing plate assemblies (100) in series on the frame. The power source includes a primary power source (25), a first auxiliary power source (26), and a second auxiliary power source (27). The primary power source (25) drives the pressing plate assembly (100) to reciprocate. The first auxiliary power source (26) and the second auxiliary power source (27) respectively drive the pressing plate assembly (100) to open and reset.

2. The horizontal fully automatic hydraulic oil press according to claim 1, characterized in that: Each press plate assembly (100) includes a press plate assembly A (101) and a press plate assembly B (102), which are connected by a locking module (24); the press plate assembly A (101) includes a press plate A (1) and a press disc assembly (103), the press plate assembly A (101) is a cuboid with a circular hole in the middle, and the press disc assembly (103) is placed at the circular hole in the middle of the press plate assembly A (101); the press plate assembly B (102) includes a press plate B (4) and a pressing ring (5) disposed on the press plate B (4); Between each pressing plate assembly (100), the pressing ring (5) and the adjacent pressing disc assemblies (103) on both sides form a pressing chamber; driven by the active power source (25), the front pressing ring (5) slides back and forth along the outer surface of the rear pressing disc assembly (103), realizing the change in the volume of the pressing chamber; the active power source (25) drives the pressing plate assembly (100) to move to the right, the volume of the pressing chamber decreases to realize the pressing action, and moves to the left to realize the return of the pressing chamber volume; subsequently, the pressing ring (5) slides back and forth along the outer surface of the rear pressing disc assembly (103) to realize the change in the volume of the pressing chamber; the pressing ring (5) slides back and forth along the outer surface of the rear pressing disc assembly (103) to realize the change in the volume of the pressing chamber to realize the pressing action, and moves to the left to realize the return of the volume of the pressing chamber to realize the pressing action; subsequently, the pressing ring (5) slides back and forth along the outer surface of the rear pressing disc assembly (103) to realize the pressing action, and moves ... The first auxiliary power (26) drives the pressing plate assembly B (102) to move to the right, and the locking module (24) opens to separate the pressing plate assembly B (102) from the pressing plate assembly A (101), opening the pressing chamber and causing the cake formed after pressing to fall off; then the second auxiliary power (27) drives the pressing plate assembly B (102) to move to the left, and under the action of the locking module (24), it re-locks with the pressing plate assembly A (101) to achieve reset, completing one pressing operation.

3. A horizontal fully automatic hydraulic oil press according to claim 2, characterized in that: The pressing disc assembly (103) includes a pressing disc (3) and a flow channel disc (34). The pressing disc (3) has a hollow cylindrical structure. The flow channel disc (34) is disposed in the hollow area of ​​the pressing disc (3). The pressing disc (3) is disposed on the pressing plate A (1). An oil collecting disc (2) is fixed on the end face of the pressing disc (3).

4. A horizontal fully automatic hydraulic oil press according to claim 3, characterized in that: The end face and the interior of the pressing disc (3) are respectively provided with end face flow channels and interior flow channels (33); the end face flow channels include annular flow channels (6) and vertical flow channels (7). The annular flow channels (6) are distributed in a ring shape from the center to the outside on the end face of the pressing disc (3), and the vertical flow channels (7) are distributed in a vertical direction on the end face; the interior flow channels (33) are connected to the end face flow channels. The interior flow channels (33) start from the two end faces of the pressing disc (3) and extend inward to converge to the oil outlet channel (11) provided in the pressing plate A (1).

5. A horizontal fully automatic hydraulic oil press according to claim 4, characterized in that: The flow channel plate (34) is a combination of two coaxial cylinders with different diameters. The end face of the larger diameter end is on the same plane as one end face of the pressing plate (3) and is provided with an annular flow channel (6) and a vertical flow channel (7) that match the flow channel on the end face of the pressing plate (3). The outer wall of the flow channel plate (34) is provided with spiral patterns (8). The spiral patterns (8) and the nested inner wall of the pressing plate (3) together form a spiral channel with inlet and outlet. The spiral channel is used for the flow of temperature control medium.

6. A horizontal fully automatic hydraulic oil press according to claim 5, characterized in that: The pressing plate assembly A (101) also includes an oil outlet pipe (9) and an oil receiving tray A (10). The oil outlet pipe (9) is connected to the oil outlet channel (11), and the oil receiving tray A (10) is used to collect the oil that leaks out from the oil collection tray (2). The oil after pressing and filtering by the oil collecting tray (2) is collected by the end face flow channel and the internal flow channel (33) and flows out through the oil outlet channel (11) and the oil outlet pipe (9); The press plate assembly B (102) also includes an oil receiving tray B (12), which is used to collect the leakage from the press ring (5).

7. A horizontal fully automatic hydraulic oil press according to claim 6, characterized in that: The internal flow channel (33) is set at an angle to the horizontal direction and is located on the lower side inside the pressing disc (3); the internal flow channel (33) and the end face flow channel are connected at the intersection of the annular flow channel (6) and the vertical flow channel (7).

8. A horizontal fully automatic hydraulic oil press according to claim 1, characterized in that: It also includes a feeding system (200) disposed on the press plate assembly (100), the feeding system (200) including a feeding conveyor (201) and a locking mechanism (202); The locking mechanism (202) includes a barrel (13), a valve stem (14) disposed in the barrel (13), a valve stem cylinder (15) for driving the valve stem (14), a valve block (16) for locking the movement of the valve stem (14), and a locking cylinder (17) for driving the movement of the valve block (16); the barrel (13) is fixed above the pressing plate B (4), and the pressing plate B (4) and the pressing ring (5) are provided with a feeding channel (18), and the valve stem (14) is matched with the inlet of the feeding channel (18); After the feeding conveying device (201) finishes conveying the oil, the valve stem cylinder (15) drives the valve stem (14) downward to block the inlet of the feeding channel (18), and then the locking cylinder (17) drives the valve block (16) to insert into the groove (19) of the valve stem (14) to lock the valve stem (14) and make the pressing chamber in a sealed state. The feeding channel is cylindrical, with a diameter of 42~46mm.

9. A horizontal fully automatic hydraulic oil press according to claim 8, characterized in that: The valve block (16) is a wedge-shaped block, and the valve stem (14) is provided with a matching wedge-shaped groove; The valve stem (14) is provided with a guide groove (32), and a boss (20) is provided on the valve stem head. The boss (20) matches the lower end of the feed channel (18). The barrel (13) is provided with a guide rod (31), which matches the guide groove (32). The valve stem (31) can slide up and down along the guide rod (31). The valve stem (14) moves down along the guide rod (31), and the boss (20) on the head of the valve stem (14) fits against the lower end of the feed channel (18) to close the pressing chamber. Then the locking cylinder (17) drives the valve block (16) to insert into the slot (19) to lock the valve stem (14).

10. A horizontal fully automatic hydraulic oil press according to any one of claims 1 to 9, characterized in that: It also includes an oil collection module (300), which includes a weighing oil box (28), an oil storage box (46), a first oil receiving plate (29), and a second oil receiving plate (30); the oil flowing out of the oil outlet pipe (9) flows into the weighing oil box (28) through the first oil receiving plate (29), and the oil and leaked slurry collected by the oil receiving plate A (10) and the oil receiving plate B (12) converge into the oil storage box (46) through the second oil receiving plate (30).

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