A toggle hydraulic press with an upward filter head

Abstract

A toggle hydraulic press with an upward filtering pressure head, used for squeezing sesame oil, comprises a top box, a silo frame, a toggle extrusion structure, a filter plate, an oil suction line, a tension spring, and an oil suction chamber assembly. The top box is fixedly mounted on the top of the silo frame; the silo frame has an extrusion groove for placing sesame residue; the toggle extrusion structure comprises two groups, symmetrically arranged on the outside of the top box; each group of toggle extrusion structures comprises a bidirectional telescopic oil cylinder, two left-right symmetrical first toggles, two left-right symmetrical second toggles, and two left-right symmetrical extrusion arms; one end of the first toggle is hinged to the outside of the top box, and the other end is hinged to one end of the second toggle; the other end of the second toggle is hinged to the top of the extrusion arm, and the lower end of the extrusion arm is fixedly connected to the filter plate; a first pin is provided at the hinge between the first and second toggles. This separates the direction of extruded raw material discharge from the direction of oil precipitation, achieving high purity of the squeezed sesame oil in industrial sesame oil production, improving the automatic control efficiency of oil pressure equipment in the food industry, and avoiding excessive sesame residue in the sesame oil.

Description

Technical Field

[0001] The invention relates to a press production device with a pressure head, in particular to a toggle hydraulic press with an upward filtering pressure head for squeezing sesame oil. Background Art

[0002] Most of the small-milled sesame oil is produced by using water instead of water. This processing method has a history of more than 1,600 years. The traditional production process usually includes several steps such as material selection, cleaning, seed frying, pulping, stirring, shaking, sedimentation, oil skimming, and packaging.

[0003] In the production process of existing industrialized small-milled sesame oil, after crushing the sesame seeds, the oil layer is filtered out using a water substitute method. However, some sesame oil is still not extracted from the remaining sesame residue raw material. In order to improve the utilization rate of the raw materials, the existing filtration and separation method is to place a weight on the sesame seeds and filter out the sesame oil by gravity extrusion. However, after the filtration is completed, the sesame residue is relatively tight in contact with the container due to long-term extrusion, and it is necessary to manually deduct the sesame residue, which is not only labor-intensive but also has low production efficiency. In the prior art, there has also been a design that utilizes a beating mechanism and a collecting mechanism to facilitate the sliding of the filtered sesame residue from the filter disc for centralized collection, and an adding mechanism is used to facilitate the addition of sesame raw materials to the box filter tank to avoid clogging, such as invention patent application CN202410691902.8. Although this filtering and squeezing mechanism has a certain effect, since it is squeezed from top to bottom, the squeezed sesame oil seeps from the filter disc. At the same time, due to the setting of the beating mechanism, some sesame residue will also fall into the oil collecting tank from the filter holes in the filter disc. The subsequent filtering link will also be added, and the process will increase.

[0004] In response to the above problems, this application designs a toggle hydraulic press with an upward filtering pressure head to ensure that the extrusion and collection direction of sesame oil is opposite to the removal direction of sesame residue, thereby ensuring the cleanliness of the squeezed sesame oil, avoiding the presence of excessive sesame residue in the sesame oil, and improving the degree of automation of equipment in the industrial production of sesame oil. Summary of the Invention

[0005] The object of the present invention is to provide a toggle hydraulic press with an upward filtering pressure head to solve the technical problems in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0007] A toggle hydraulic press with an upward filtering pressure head comprises a top box, a silo frame, a toggle extrusion structure, a filter plate, an oil suction pipeline, a tension spring, and an oil suction chamber assembly. The top box is fixedly arranged on the top of the silo frame; the silo frame has an extrusion groove for placing sesame residue; the toggle extrusion structure has two groups, which are symmetrically arranged on the outside of the top box; each group of toggle extrusion structures comprises a bidirectional telescopic oil cylinder, two left-right symmetrical first toggle joints, two left-right symmetrical second toggle joints, and two left-right symmetrical extrusion arms; one end of the first toggle joint is hinged to the top box. On the outside, the other end is hinged to one end of the second elbow joint; the other end of the second elbow joint is hinged to the top of the extrusion arm, and the lower end of the extrusion arm is fixedly connected to the filter plate; a first pin is provided at the hinge of the first elbow joint and the second elbow joint; telescopic arms are telescopically installed at both ends of the two-way telescopic oil cylinder, and a long waist-shaped hole is provided at the end of the telescopic arm, and the first pin is slidably installed in the long waist-shaped hole; a second pin is also installed at the end of the telescopic arm, and through holes are opened on the left and right side walls of the top box, and the second pin passes through the through holes into the interior of the top box and is connected to the oil suction chamber assembly.

[0008] Preferably, the filter disc includes a vertical and closed side wall and a horizontal filter plate, the side wall and the filter plate form a receiving space, and the outer dimensions of the filter disc match the inner dimensions of the extrusion groove; a plurality of filter holes are provided on the filter plate.

[0009] Preferably, the oil suction pipeline includes a first suction pipe, a second suction pipe, an oil suction hole, a first one-way valve, an oil discharge hole, and a second one-way valve; wherein, the bottom of the first suction pipe is fixedly installed at the center position of the filter plate, and a plurality of radially extending oil suction holes are provided at the bottom of the first suction pipe near the filter plate, and the oil suction holes connect the external space and the internal cavity of the first suction pipe; the top of the first suction pipe is slidably sleeved on the outside of the second suction pipe, and the top of the second suction pipe is fixedly installed at the middle position of the bottom of the top box, and the internal cavity of the second suction pipe is connected to the internal cavity of the top box.

[0010] Preferably, a first one-way valve is provided between the second suction pipe and the internal cavity of the top box, and the first one-way valve ensures the one-way flow of oil from the second suction pipe to the top box; an oil drain hole is opened in the upper center of the top box, and the oil drain hole connects the internal space of the top box with the external oil suction pump, and a second one-way valve is provided between the oil drain hole and the oil suction pump to ensure the one-way flow of oil from the top box to the oil suction pump.

[0011] Preferably, the oil suction chamber assembly is arranged inside the top box, which includes a piston chamber, two drive chambers and two piston drive assemblies; the piston chamber is located in the middle of the top box, and the two drive chambers are symmetrically arranged on both sides of the piston chamber. The drive chamber and the piston chamber are separated by a partition, the top of the piston chamber is connected to the oil drain hole, and the bottom is connected to the second suction pipe.

[0012] Preferably, the piston drive assembly includes a piston head and a piston rod, and the two piston heads are symmetrically slidably arranged inside the piston cavity; one end of the piston rod is fixedly connected to the tail of the piston head, and the other end passes through the partition and enters the drive cavity.

[0013] Preferably, a driving slider is slidably installed in the driving cavity, one side of the driving slider is fixedly connected to the tail of the piston rod, and the other side of the driving slider is provided with an inclined slide rail, the inclined slide rail is inclined, and the bottom of the inclined slide rail is inclined toward the central axis of the top box; an ear piece is slidably installed on the inclined slide rail; the second pin shaft of the elbow extrusion structure enters the interior of the top box from the through hole and passes through the through hole on the ear piece.

[0014] Preferably, the outer sleeve of the first suction pipe and the second suction pipe is provided with a tension spring, the top end of the tension spring is fixedly connected to the bottom of the top box, and the bottom end of the tension spring is fixedly connected to the upper side of the filter plate; when the tension spring is contracted to the minimum length, the filter plate is lifted to the highest position, so that the top of the side wall of the filter plate abuts against the lower side of the top box.

[0015] Preferably, when the telescopic arm of the two-way telescopic oil cylinder is in the longest extended state, the first pin is located in the long waist-shaped hole at one end of the cylinder body of the two-way telescopic oil cylinder.

[0016] Preferably, the top of the second elbow joint has a protrusion, and a limiting column is provided on the first elbow joint. When the two-way telescopic oil cylinder drives the intersection hinge point to reach the center point of the elbow joint, the two-way telescopic oil cylinder further contracts a short distance, so that the intersection hinge point passes the center point of the elbow joint, and the protrusion is limited by the limiting column, thereby limiting the further relative rotation of the first elbow joint and the second elbow joint.

[0017] The beneficial effects of the present invention are:

[0018] 1. A separate guide structure is not provided for the extrusion arm of the toggle extrusion structure. Instead, a telescopic guide oil suction structure consisting of a first suction pipe and a second suction pipe is provided. This not only guides the toggle mechanism, but also synchronously sucks the extruded oil upward, separates the extruded raw material discharge direction from the oil precipitation direction, achieves a high degree of cleanliness in the extruded sesame oil, avoids excessive sesame residue in the sesame oil, and improves the degree of automation of equipment in the industrial production of sesame oil.

[0019] 2. The inclined slide rail provided in the present invention is arranged in such a way that the extension and folding process of the toggle extrusion structure and the suction process of the oil suction chamber assembly can move synchronously, thus avoiding the occurrence of mechanical dead points.

[0020] 3. The present invention utilizes the characteristic of the toggle extrusion structure that the toggle node contracts inward during extrusion, and combines the process of the toggle node contracting inward and stretching outward with the process of the piston sucking oil, thereby separating the raw material unloading direction from the oil precipitation direction, and simultaneously achieving the oil filtration and collection of the sesame oil and the extrusion of the raw material.

[0021] 4. The present invention provides a long waist-shaped hole on the telescopic arm to ensure the separation of the extrusion process and the oil suction process, ensuring that the extruded oil has enough travel to be absorbed by the piston cavity.

[0022] 5. To ensure effective material extrusion by the filter disc after the toggle extrusion structure is fully extended, the present invention incorporates the characteristics of the tension spring, with a protrusion on the top of the second toggle and a limit post on the first toggle. This not only enables the toggle extrusion structure to achieve long-term static extrusion of the material, ensuring sufficient oil seepage, but also allows the material residue in the filter holes on the filter disc to be vibrated downward, further preventing clogging of the filter disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the extrusion filtration structure of the present invention Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the extrusion filtration structure of the present invention Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the extrusion filtration structure of the present invention Figure 3 ;

[0026] Figure 4 This is a schematic diagram of the extrusion filtration structure of the present invention Figure 4 ;

[0027] Figure 5 This is a schematic diagram of the internal structure of the top box of the present invention Figure 1 ;

[0028] Figure 6 This is a schematic diagram of the internal structure of the top box of the present invention Figure 2 ;

[0029] Figure 7 This is a schematic diagram of the internal structure of the top box of the present invention Figure 3 ;

[0030] Figure 8 This is a schematic diagram of the internal structure of the top box of the present invention Figure 4 ;

[0031] Figure 9 It is a schematic diagram of the toggle limiting structure of the present invention;

[0032] Figure numerals: top box 1, silo rack 2, toggle extrusion structure 3, filter plate 4, oil suction pipeline 5, tension spring 6, oil suction chamber assembly 7, through hole 11, partition 12, extrusion groove 21, two-way telescopic cylinder 31, first toggle 32, second toggle 33, extrusion arm 34, telescopic arm 311, long waist-shaped hole 312, side wall 41, filter plate 42, filter hole 43, first suction pipe 51, second suction pipe 52, oil suction hole 53, first one-way valve 54, oil discharge hole 55, second one-way valve 56, piston chamber 71, drive chamber 72, piston drive assembly 73, piston head 731, piston rod 732, drive slider 721, inclined slide rail 722, ear 723, protrusion 331, limit column 321. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings and preferred embodiments.

[0034] like Figure 1-9 Shown is a schematic structural diagram of a toggle hydraulic press with an upward filtering pressure head according to the present invention.

[0035] It includes a top box 1, a silo frame 2, a toggle extrusion structure 3, a filter plate 4, an oil suction pipeline 5, a tension spring 6, and an oil suction chamber assembly 7.

[0036] The top box 1 is a rectangular hollow box structure, fixed on top of the silo frame 2. The silo frame 2 has an extrusion groove 21 to prevent sesame residue from being released. The side of the extrusion groove 21 is equipped with a reversible door panel 22 for removing and placing sesame residue into the extrusion groove 21. The bottom of the silo frame 2 is equipped with universal wheels 23 for easy movement of the silo frame 2.

[0037] There are two groups of elbow extrusion structures 3, which are symmetrically arranged on the outside of the top box 1 (only one group is shown in the figure). Each group of elbow extrusion structures 3 includes a two-way telescopic cylinder 31, two left-right symmetrical first elbows 32, two left-right symmetrical second elbows 33, and two left-right symmetrical extrusion arms 34. One end of the first elbow 32 is hinged to the outside of the top box 1, and the other end is hinged to one end of the second elbow 33. The other end of the second elbow 33 is hinged to the top of the extrusion arm 34, and the lower end of the extrusion arm 34 is fixedly connected to the filter plate 4. A first pin 35 is provided at the hinge of the first elbow 32 and the second elbow 33. Telescopic arms 311 are telescopically installed at both ends of the two-way telescopic cylinder 31. The end of the telescopic arm 311 is provided with a long waist-shaped hole 312, and the first pin 35 is slidably installed in the long waist-shaped hole 312. A second pin 36 is also installed at the end of the telescopic arm 311. Through holes 11 are opened on the left and right side walls of the top box 1. The second pin 36 passes through the through holes 11 and enters the interior of the top box 1 and is connected to the oil suction chamber assembly 7.

[0038] The filter disc 4 includes a vertical and closed side wall 41 and a horizontal filter plate 42. The side wall 41 and the filter plate 42 form a receiving space. The outer dimensions of the filter disc 4 match the inner dimensions of the extrusion groove 21. The filter plate 42 is provided with a plurality of filter holes 43.

[0039] The oil suction pipeline 5 includes a first suction pipe 51, a second suction pipe 52, an oil suction hole 53, a first one-way valve 54, an oil discharge hole 55, and a second one-way valve 56. Among them, the bottom of the first suction pipe 51 is fixedly installed at the center position of the filter plate 42, and a plurality of radially extending oil suction holes 53 are provided at the bottom of the first suction pipe 51 near the filter plate 42. The oil suction holes 53 connect the external space and the internal cavity of the first suction pipe 51. The top of the first suction pipe 51 is slidably sleeved on the outside of the second suction pipe 52, and the top of the second suction pipe 52 is fixedly installed at the middle position of the bottom of the top box 1. The internal cavity of the second suction pipe 52 is connected to the internal cavity of the top box 1. The first suction pipe 51 and the second suction pipe 52 form a telescopic sliding vertical guide structure. The sliding guide of the first suction pipe 51 and the second suction pipe 52 vertically guides the filter plate 4, and at the same time, vertically guides the extrusion arm 34 in the elbow extrusion structure 3. A first one-way valve 54 is provided between the second suction pipe 52 and the internal cavity of the top box 1. The first one-way valve 54 ensures the one-way flow of oil from the second suction pipe 52 to the top box 1. An oil drain hole 55 is provided in the center of the upper portion of the top box 1. The oil drain hole 55 connects the internal space of the top box 1 with the external oil suction pump. A second one-way valve 56 is provided between the oil drain hole 55 and the oil suction pump to ensure the one-way flow of oil from the top box 1 to the oil suction pump.

[0040] The oil suction chamber assembly 7 is located within the top box 1 and comprises a piston chamber 71, two drive chambers 72, and two piston drive assemblies 73. The piston chamber 71 is located in the middle of the top box 1, with two drive chambers 72 symmetrically located on either side of the piston chamber 71. The drive chamber 72 and piston chamber 71 are separated by a partition 12. The top of the piston chamber 71 is connected to the oil drain hole 55, and the bottom is connected to the second suction pipe 52.

[0041] The piston drive assembly 73 includes a piston head 731 and a piston rod 732. The two piston heads 731 are symmetrically slidably arranged inside the piston chamber 71. One end of the piston rod 732 is fixedly connected to the tail of the piston head 731, and the other end passes through the partition 12 to enter the drive chamber 72. A driving slider 721 is slidably installed in the drive chamber 72. One side of the driving slider 721 is fixedly connected to the tail of the piston rod 732, and the other side of the driving slider 721 is provided with an inclined slide rail 722. The inclined slide rail 722 is arranged in a vertical direction, but the bottom of the inclined slide rail 722 is inclined toward the central axis of the top box 1. An ear piece 723 is slidably installed on the inclined slide rail 722. The second pin shaft 36 of the elbow extrusion structure 3 enters the interior of the top box 1 from the through hole 11 and then passes through the through hole on the ear piece 723.

[0042] Furthermore, a tension spring 6 is sheathed around the exterior of the first and second suction pipes 51, 52. The top end of the tension spring 6 is fixedly connected to the bottom of the top box 1, while the bottom end of the tension spring 6 is fixedly connected to the upper side of the filter plate 42. When the tension spring 6 is contracted to its minimum length, it raises the filter plate 4 to its highest position, causing the top of the sidewall 41 of the filter plate 4 to abut against the lower side of the top box 1. Furthermore, to ensure proper oil intake, the upper side of the filter plate 42 is recessed, with the lowest point on the filter plate 42 where it connects to the first suction pipe 51.

[0043] The following combination Figure 1-9 The filtering and squeezing process of the present invention is described.

[0044] First, as Figure 1 、 Figure 5 The figure shows the state before extrusion, at which time the sesame residue material to be extruded is loaded into the extrusion groove 21. At this time, due to the presence of the tension spring 6, the filter disc 4 is in the uppermost position, and the top of the side wall 41 of the filter disc 4 abuts the bottom of the top box 1 and is restrained. The telescopic arm 311 of the two-way telescopic cylinder 31 is in its longest extended position, the first pin 35 is located in the end of the elongated waist-shaped hole 312 closest to the cylinder body, the toggle extrusion structure 3 is in its most collapsed position, and the piston heads 731 are located at both ends of the piston cavity 71.

[0045] The second step is Figure 2 、 Figure 6 When the two-way telescopic cylinder 31 contracts the telescopic arm 311, the long waist-shaped hole 312 slides relative to the first pin 35, and finally the end of the long waist-shaped hole 312 away from the cylinder body abuts against the first pin 35. During this process, the telescopic arm 311 synchronously drives the second pin 36 to move toward the middle, and synchronously drives the piston head 731 to compress the space of the piston chamber 71 inward, so that the air or oil in the piston chamber 71 is discharged from the oil drain port 55.

[0046] The third step is Figure 3 、 Figure 7 At this time, the telescopic arm 311 of the two-way telescopic oil cylinder 31 is further contracted, driving the toggle extrusion structure 3 from a folded state to an extended state, driving the filter plate 4 to downwardly squeeze the sesame residue raw material in the extrusion groove 21, and the oil in the raw material upwards through the filter hole 43 into the space on the upper surface of the filter plate 42. At this time, the first suction pipe 51 and the second suction pipe 52 are stretched to their longest state, the tension spring 6 is stretched to its longest state, and the piston chamber 71 is also synchronously compressed to its minimum.

[0047] The fourth step is Figure 4 、 Figure 8When the two-way telescopic oil cylinder 31 is in the state, the telescopic arm 311 of the two-way telescopic oil cylinder 31 is extended, and the long waist-shaped hole 312 slides relative to the first pin 35. Finally, the end of the long waist-shaped hole 312 close to the cylinder body abuts against the first pin 35. In this process, the piston head 731 is synchronously driven to move to both sides, and the piston cavity 71 gradually becomes larger. Due to the setting of the first one-way valve 54 and the second one-way valve 56, the oil squeezed out from the upper surface of the filter plate 42 enters the piston cavity 71 through the oil suction hole 53, the first suction pipe 51, and the second suction pipe 52.

[0048] The fifth step is to return to Figure 1 、 Figure 5 During this process, the telescopic arm 31 of the two-way telescopic oil cylinder 31 is further extended, and the long waist-shaped hole 312 drives the toggle extrusion structure 3 to gradually fold from the extended state. During this process, the piston further increases the volume of the cavity 71 and further absorbs the oil.

[0049] In addition, in order to ensure that the filter disc 4 can effectively squeeze the raw material after the toggle squeezing structure 3 is fully extended, the following Figure 9 As shown in the toggle limit structure. Figure 9 As shown, the upper hinge point of the first elbow joint 32 is O1, the intersection hinge point of the first elbow joint 32 and the second elbow joint 33 is O3, and the lower hinge point of the second elbow joint 33 is O2. Due to the characteristics of the elbow mechanism, during the movement of the elbow, the upper hinge point O1 and the lower hinge point O2 are always on the same vertical axis. When the elbow mechanism is fully extended, the upper hinge point O1, the lower hinge point O2 and the intersection hinge point O3 are on the same vertical axis. The position of the intersection hinge point O3 on the axis at this time is defined as the elbow center point O4. To ensure effective material extrusion by the filter disc 4 after the toggle extrusion structure 3 is fully extended, the present invention provides a protrusion 331 on the top of the second toggle 33 and a limiting post 321 on the first toggle 32. When the two-way telescopic cylinder 31 drives the intersection hinge point O3 to the toggle center point O4, the two-way telescopic cylinder 31 further retracts a short distance, so that the intersection hinge point O3 passes the toggle center point O4. The protrusion 331 is then limited by the limiting post 321, restricting further relative rotation between the first toggle 32 and the second toggle 33. Furthermore, due to the presence of the tension spring 6, an inward tensioning force F is constantly applied to the toggle mechanism, thereby ensuring long-term static extrusion of the material by the toggle extrusion structure 3 and sufficient oil seepage. When the extrusion is completed, the bidirectional telescopic cylinder 31 drives the intersection hinge point O3 to cross the center point O4 of the toggle again. The tension spring 6 is first stretched and then suddenly contracts after crossing the center point O4 of the toggle. The vibration generated is synchronously transmitted to the filter disc 4, ensuring that the material residue entering the filter hole 43 on the filter disc 4 during the extrusion process is vibrated downward, further preventing the filter disc 4 from being blocked.

[0050] In the present invention, a separate guiding structure is not provided for the extrusion arm 34 of the elbow extrusion structure 3. Instead, a telescopic guiding oil suction structure consisting of a first suction pipe 51 and a second suction pipe 52 is provided. This not only realizes the guidance of the elbow mechanism, but also can realize the synchronous upward suction of the extruded oil, separates the unloading direction of the extruded raw material from the precipitation direction of the oil, and realizes a high degree of cleanliness of the squeezed sesame oil, avoiding the appearance of excessive sesame residue in the sesame oil.

[0051] On the other hand, the inclined slide rail 722 provided in the present invention is arranged in an inclined direction so as to ensure that the stretching and folding process of the toggle extrusion structure 3 and the suction process of the oil suction chamber assembly 7 can move synchronously, thereby avoiding the occurrence of a mechanical dead point.

[0052] In addition, the present invention utilizes the characteristic of the elbow node of the elbow joint extrusion structure 3 that contracts inward during extrusion, and combines the process of the elbow node contracting inward and stretching outward with the process of the piston sucking oil, thereby realizing the separation of the raw material unloading direction and the oil precipitation direction, and simultaneously realizing the oil filtration and collection of the sesame oil and the extrusion of the raw material.

[0053] In addition, the provision of the long waist-shaped hole 312 on the telescopic arm 311 ensures the separation of the extrusion process and the oil suction process, ensuring that the extruded oil has enough travel to be absorbed by the piston cavity 71.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0056] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0057] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0058] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A toggle hydraulic press with an upward filtering head for pressing sesame oil, characterized by: The cam is connected to the oil pump sleeve, and the oil pump sleeve has the oil pump sleeve on the top end face of the oil pump sleeve, and the oil pump sleeve has the oil pump sleeve on the bottom end face of the oil pump sleeve. The oil suction pipeline includes a first suction pipe, a second suction pipe, an oil suction hole, a first one-way valve, an oil discharge hole, and a second one-way valve; wherein the bottom of the first suction pipe is fixedly mounted at the center of the filter plate, and a plurality of radially extending oil suction holes are provided at the bottom of the first suction pipe near the filter plate, and the oil suction holes connect the external space of the first suction pipe with the internal cavity; the top of the first suction pipe is slidably sleeved on the outside of the second suction pipe, and the top of the second suction pipe is fixedly mounted at the middle position of the bottom of the top box, and the internal cavity of the second suction pipe is connected with the internal cavity of the top box; A first one-way valve is provided between the second suction pipe and the internal cavity of the top box, and the first one-way valve ensures the one-way flow of oil from the second suction pipe to the top box; an oil drain hole is opened in the center of the upper part of the top box, and the oil drain hole connects the internal space of the top box with the external oil suction pump. A second one-way valve is provided between the oil drain hole and the oil suction pump to ensure the one-way flow of oil from the top box to the oil suction pump; The oil suction chamber assembly is arranged inside the top box, which includes a piston chamber, two drive chambers and two piston drive assemblies; the piston chamber is located in the middle of the top box, and the two drive chambers are symmetrically arranged on both sides of the piston chamber. The drive chamber and the piston chamber are separated by a partition. The top of the piston chamber is connected to the oil drain hole, and the bottom is connected to the second suction pipe.

2. A toggle hydraulic press with an upward filtering head according to claim 1, characterized in that: The filter disc includes a vertical and closed side wall and a horizontal filter plate. The side wall and the filter plate form a receiving space. The outer dimensions of the filter disc match the inner dimensions of the extrusion groove. The filter plate is provided with a plurality of filter holes.

3. A toggle hydraulic press with an upward filtering head according to claim 1, characterized in that: The piston drive assembly includes a piston head and a piston rod, and the two piston heads are symmetrically slidably arranged inside the piston cavity; One end of the piston rod is fixedly connected to the tail of the piston head, and the other end passes through the partition plate and enters the driving chamber.

4. A toggle hydraulic press with an upward filtering head according to claim 3, characterized in that: A driving slider is slidably installed in the driving cavity, one side of the driving slider is fixedly connected to the tail of the piston rod, and the other side of the driving slider is provided with an inclined slide rail, which is inclined, and the bottom of the inclined slide rail is inclined toward the central axis of the top box; an ear piece is slidably installed on the inclined slide rail; the second pin shaft of the toggle extrusion structure enters the interior of the top box from the through hole and then passes through the through hole on the ear piece.

5. A toggle hydraulic press with an upward filtering head according to claim 4, characterized in that: A tension spring is provided on the outside of the first suction pipe and the second suction pipe, the top end of the tension spring is fixedly connected to the bottom of the top box, and the bottom end of the tension spring is fixedly connected to the upper side of the filter plate; when the tension spring is contracted to the minimum length, the filter plate is lifted to the highest position, so that the top of the side wall of the filter plate abuts against the lower side of the top box.

6. A toggle hydraulic press with an upward filtering head according to claim 5, characterized in that: When the telescopic arm of the two-way telescopic oil cylinder is in the longest extended state, the first pin shaft is located in the long waist-shaped hole at one end of the cylinder body of the two-way telescopic oil cylinder.

7. A toggle hydraulic press with an upward filtering head according to claim 6, characterized in that: The second elbow joint has a protrusion on the top and a limit column is provided on the first elbow joint. When the two-way telescopic oil cylinder drives the intersection hinge point to reach the center point of the elbow joint, the two-way telescopic oil cylinder further contracts a short distance, so that the intersection hinge point passes the center point of the elbow joint. The protrusion is limited by the limit column, limiting the further relative rotation of the first elbow joint and the second elbow joint.

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