Oil separation device of a baling press and baling press

Abstract

The utility model relates to the oil separation device and press bale machine of booking machine, including hydraulic oil tank, gas cap filter core, separation pipeline, separation pipeline one end is connected with the top of hydraulic oil tank, and the bottom of gas cap filter core is connected with the other end of separation pipeline, and separation mechanism, separation mechanism sets up in the middle and lower part in separation pipeline, and separation mechanism is used for separating the oil liquid in the airflow in separation pipeline. The gas cap filter core is physically isolated with the hydraulic oil tank through the separation pipeline, the path of oil mist diffusion is prolonged, the oil liquid gravity is settled to the hydraulic oil tank, the opportunity that oil mist directly contacts with the gas cap filter core is reduced, the buffer space is provided for subsequent oil separation, the oil mist amount that enters the gas cap filter core is reduced, the erosion risk of oil mist to the gas cap filter core is reduced, the gas cap filter core is reduced or avoids the blockage, improves the service life of gas cap filter core, avoids the hydraulic oil tank welding panel place to crack, improves the service life of hydraulic oil tank.

Description

Technical Field

[0001] This utility model relates to the technical field of hydraulic pressing machine equipment for pulp and paper, specifically to an oil-liquid separation device and a pressing machine. Background Technology

[0002] A bale press is a device that compresses loose materials into compact bales by applying pressure. It is widely used in various industries to reduce material volume, facilitate storage and transportation, and improve resource utilization efficiency. Among them, the hydraulic bale press for pulp board paper is specifically designed to compress pulp board paper into block bales for easier transportation and recycling. Driven by hydraulic pressure, it offers advantages such as high pressure, stable operation, and a high compression ratio.

[0003] During the operation of a hydraulic baling machine for pulp and paper, the hydraulic oil level in the tank fluctuates frequently, leading to the generation of oil mist. In existing hydraulic baling machines for pulp and paper, the air cap filter element is directly installed on top of the hydraulic oil tank. Due to the frequent fluctuations in the hydraulic oil level, the air cap filter element is corroded by oil mist, making it prone to absorbing dust or paper fibers from the papermaking workshop, causing blockage and reducing its service life. Blockage of the air cap filter element also increases the pressure inside the hydraulic oil tank, causing cracks at the welded panels of the hydraulic oil tank, further reducing its service life. Utility Model Content

[0004] Therefore, there is a need to provide an oil-liquid separation device and a pressing machine for a pressing machine, to solve the technical problem that in existing hydraulic pressing machines for pulp and paper, the air cap filter element is directly installed on the top of the hydraulic oil tank. Due to frequent fluctuations in the hydraulic oil level, the air cap filter element is corroded by oil mist, making it easy for the air cap filter element to adsorb dust or paper fibers from the papermaking workshop, causing the air cap filter element to become clogged and reducing its service life. At the same time, the clogged air cap filter element also causes the pressure inside the hydraulic oil tank to increase, leading to cracks at the welded panel of the hydraulic oil tank and reducing the service life of the hydraulic oil tank.

[0005] To achieve the above objectives, the inventor provides an oil-liquid separation device for a packing machine, comprising:

[0006] Hydraulic oil tank;

[0007] Air cap filter element;

[0008] A separation pipe, one end of which is connected to the top of the hydraulic oil tank, and the other end of which is connected to the bottom of the air cap filter element;

[0009] And a separation mechanism, which is located in the lower middle part of the separation pipe, and is used to separate oil from the gas flow in the separation pipe.

[0010] As a preferred structure of this utility model, the separation mechanism includes a connecting component, a central shaft, and multiple blades;

[0011] One end of the connecting component is connected to the inner wall of the separating pipe, and the other end of the connecting component is connected to the central axis. The plurality of blades are evenly spaced along the central axis and are connected to the central axis.

[0012] As a preferred structure of this utility model, the oil-liquid separation device of the pressing machine further includes a first filter plate, which is inclined downward in the separation pipe and located above the separation mechanism. The first filter plate is provided with a plurality of first filter holes.

[0013] As a preferred structure of this utility model, the oil-liquid separation device of the pressing machine further includes a second filter plate. The second filter plate is inclined downward and disposed in the separation pipe. The second filter plate is located above the first filter plate and is provided with a plurality of second filter holes.

[0014] As a preferred structure of this utility model, the first filter plate is semi-circular in shape, and the second filter plate is semi-circular in shape;

[0015] The first filter plate and the second filter plate are staggered left and right.

[0016] As a preferred structure of this utility model, the first filter plate is tilted downward at an angle of 10-20°, and the second filter plate is tilted downward at an angle of 10-20°.

[0017] As a preferred structure of this utility model, a plurality of first filter holes are evenly distributed on the first filter plate, and the diameter of the first filter holes is 4-8 mm.

[0018] Multiple second filter holes are evenly distributed on the second filter plate, and the diameter of the second filter holes is 4-8 mm.

[0019] As a preferred structure of this utility model, the height of the separation pipe is 600-1000 mm.

[0020] As a preferred structure of this utility model, the oil-liquid separation device of the pressing machine further includes a pressure detection mechanism, which is disposed on the air cap filter element and is used to detect the pressure inside the air cap filter element.

[0021] The advantages of the above technical solution, which differs from existing technologies, are as follows: The oil-liquid separation device of this utility model for a pressing machine connects the hydraulic oil tank and the air cap filter element via a separation pipe. This separation pipe forms a channel for gas to flow from the hydraulic oil tank to the air cap filter element. The separation pipe physically isolates the air cap filter element from the hydraulic oil tank, extending the path of oil mist diffusion. The oil settles into the hydraulic oil tank due to gravity, reducing the chance of oil mist directly contacting the air cap filter element and providing a buffer space for subsequent oil-liquid separation. Furthermore, a separation mechanism is installed within the separation pipe. When the airflow containing oil mist passes through the separation mechanism, the mechanism performs preliminary separation of the oil in the airflow, reducing the amount of oil mist entering the air cap filter element, lowering the risk of oil mist erosion of the air cap filter element, reducing or preventing clogging of the air cap filter element, and improving its service life. It also reduces or prevents cracking at the welded panel of the hydraulic oil tank, thus improving the service life of the hydraulic oil tank.

[0022] To achieve the above objectives, the inventors provide a packing machine, including an oil-liquid separation device for any of the packing machines provided by the inventors above.

[0023] The advantages of the above technical solution, which differs from the existing technology, are as follows: In the pressing machine of this utility model, the oil-liquid separation device of the pressing machine connects the hydraulic oil tank and the air cap filter element through a separation pipe. The separation pipe forms a channel for gas to flow from the hydraulic oil tank to the air cap filter element. The separation pipe physically isolates the air cap filter element from the hydraulic oil tank, prolonging the path of oil mist diffusion. The oil settles into the hydraulic oil tank by gravity, reducing the chance of oil mist directly contacting the air cap filter element and providing a buffer space for subsequent oil-liquid separation. Furthermore, a separation mechanism is provided in the separation pipe. When the airflow containing oil mist passes through the separation mechanism, the separation mechanism performs preliminary separation of the oil in the airflow, reducing the amount of oil mist entering the air cap filter element, reducing the risk of oil mist erosion of the air cap filter element, reducing or avoiding clogging of the air cap filter element, and improving the service life of the air cap filter element. It also reduces or avoids cracking at the welded panel of the hydraulic oil tank, thus improving the service life of the hydraulic oil tank.

[0024] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0025] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.

[0026] In the accompanying drawings of the instruction manual:

[0027] Figure 1 This is a schematic diagram of the oil-liquid separation device of the pressing machine described in a specific embodiment;

[0028] Figure 2 This is a front view of the separation pipe described in the specific embodiment;

[0029] Figure 3 This is a cross-sectional view of the separation pipe described in the specific embodiment;

[0030] Figure 4 This is a top view of the separation pipe described in the specific embodiment;

[0031] Figure 5 This is a top view of the separation mechanism described in the specific embodiment;

[0032] Figure 6 This is a top view of the first filter plate in a specific implementation embodiment;

[0033] Figure 7 This is a top view of the second filter plate in a specific embodiment.

[0034] The reference numerals used in the above figures are explained as follows:

[0035] 1. Hydraulic oil tank,

[0036] 2. Separate the pipes.

[0037] 3. Air cap filter element,

[0038] 4. Separation mechanism

[0039] 41. Connecting components,

[0040] 42. Central axis

[0041] 43. Leaves

[0042] 5. First filter plate,

[0043] 51. First filter hole,

[0044] 6. Second filter plate

[0045] 61. Second filter hole,

[0046] 7. Pressure testing agency. Detailed Implementation

[0047] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0048] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0049] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0050] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0051] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0052] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0053] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0054] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. These expressions are only for the convenience of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. Furthermore, in this context, it should be understood that when it is mentioned that an element is connected "on" or "below" another element, it can be directly connected not only to the other element "on" or "below," but also indirectly connected to the other element "on" or "below" through an intermediate element.

[0055] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0056] Please see Figures 1 to 7 This embodiment relates to an oil-liquid separation device for a pressing machine. Specifically, the oil-liquid separation device for the pressing machine in this embodiment is mainly applied to a hydraulic pressing machine for pulp and paper. The oil-liquid separation device for the pressing machine includes:

[0057] Hydraulic oil tank 1; Hydraulic oil tank 1 is a container used to store hydraulic oil in the hydraulic system of the baling machine; Hydraulic oil tank 1 supplies hydraulic oil to the hydraulic system of the baling machine, ensuring the normal operation of the hydraulic system. As a storage container for hydraulic oil, hydraulic oil tank 1 ensures the normal operation of the baling machine.

[0058] Air cap filter element 3; Air cap filter element 3 is a filter component used to filter the gas entering or exiting the hydraulic oil tank 1. Air cap filter element 3 filters dust, impurities, etc., from the air, preventing them from entering the hydraulic oil tank 1 and contaminating the hydraulic oil. It also allows gas inside the hydraulic oil tank 1 to escape, maintaining the pressure balance inside and outside the hydraulic oil tank 1. Specifically, the air cap filter element 3 effectively filters impurities in the gas, protecting the hydraulic oil inside the hydraulic oil tank 1 from contamination. Furthermore, its connection to the separation pipe 2 reduces the corrosive effect of oil mist, extending its service life.

[0059] The separation pipe 2 is connected at one end to the top of the hydraulic oil tank 1 via a flange, and at the other end to the bottom of the air cap filter element 3 via a flange. The separation pipe 2 forms a channel for gas to flow from the hydraulic oil tank 1 to the air cap filter element 3. The separation pipe 2 physically isolates the air cap filter element 3 from the top of the hydraulic oil tank 1, extending the path of oil mist diffusion. The oil settles into the hydraulic oil tank 1 by gravity, reducing the chance of oil mist directly contacting the air cap filter element 3 and providing a buffer space for subsequent oil separation.

[0060] And a separation mechanism 4, which is located in the lower middle part of the separation pipe 2, is used to separate the oil in the airflow within the separation pipe 2. When the airflow containing oil mist passes through the separation mechanism 4, the separation mechanism 4 performs preliminary separation of the oil in the airflow, reducing the amount of oil mist entering the air cap filter element 3, reducing the risk of oil mist erosion of the air cap filter element 3, reducing or avoiding clogging of the air cap filter element 3, and improving the service life of the air cap filter element 3. It also reduces or avoids cracking at the welded panel of the hydraulic oil tank 1, thus improving the service life of the hydraulic oil tank 1.

[0061] Specifically, in the oil separation device of the pressing machine in this embodiment, the hydraulic oil tank 1 and the air cap filter element 3 are connected by a separation pipe 2. The separation pipe 2 forms a channel for gas to flow from the hydraulic oil tank 1 to the air cap filter element 3. The separation pipe 2 physically isolates the air cap filter element 3 from the hydraulic oil tank 1, extending the path of oil mist diffusion. The oil settles into the hydraulic oil tank 1 by gravity, reducing the chance of oil mist directly contacting the air cap filter element 3 and providing a buffer space for subsequent oil separation. Furthermore, a separation mechanism 4 is provided in the separation pipe 2. When the airflow containing oil mist passes through the separation mechanism 4, the separation mechanism 4 performs preliminary separation of the oil in the airflow, reducing the amount of oil mist entering the air cap filter element 3, reducing the risk of oil mist erosion of the air cap filter element 3, reducing or avoiding clogging of the air cap filter element 3, and improving the service life of the air cap filter element 3. It also reduces or avoids cracking at the welded panel of the hydraulic oil tank 1, thus improving the service life of the hydraulic oil tank 1.

[0062] Optionally, in some embodiments, such as Figures 1 to 7As shown, the separation mechanism 4 includes a connecting component 41, a central shaft 42, and multiple blades 43. One end of the connecting component 41 is connected to the inner wall of the separation pipe 2, and the other end of the connecting component 41 is connected to the central shaft 42. The multiple blades 43 are evenly spaced along the central shaft 42 and are connected to the central shaft 42, thereby fixing the central shaft 42 and the blades 43. Specifically, due to the fluctuation of the liquid level in the hydraulic oil tank 1, airflow is generated. Oil mist particles in the airflow impact and adhere to the blades 43 due to inertia. The kinetic energy of the airflow drives the blades 43 to rotate, and the primary separation of oil is achieved through centrifugal force. The separated oil flows back to the hydraulic oil tank 1 along the blades 43 and the inner wall of the separation pipe 2, reducing the risk of oil mist erosion of the air cap filter element 3, reducing or avoiding clogging of the air cap filter element 3, improving the service life of the air cap filter element 3, reducing or avoiding cracking at the welded panel of the hydraulic oil tank 1, and improving the service life of the hydraulic oil tank 1. It should be noted that in this embodiment, the connecting component 41 is a connecting steel plate, and the central shaft 42 is a hollow shaft.

[0063] Optionally, in some embodiments, such as Figures 1 to 7 As shown, the oil-liquid separation device of the pressing machine also includes a first filter plate 5. The first filter plate 5 is inclined downwards inside the separation pipe 2. The downward inclination structure allows the separated oil to flow back to the hydraulic oil tank 1 easily along the plate surface. The first filter plate 5 is located above the separation mechanism 4, and the first filter plate 5 is provided with multiple first filter holes 51. The first filter plate 5 is provided to further separate residual oil mist in the airflow, and to perform secondary filtration and separation on the airflow after the initial separation by the separation mechanism 4, further reducing the amount of oil mist. Moreover, the inclined arrangement of the first filter plate 5 facilitates oil backflow and prevents oil from accumulating on the filter plate.

[0064] Furthermore, in some embodiments, the first filter plate 5 is tilted downwards at an angle of 10-20°. This tilt angle range ensures that the separated oil flows smoothly back to the hydraulic oil tank 1 along the plate surface, without excessively obstructing airflow due to an excessively large tilt angle. This ensures smooth oil return while avoiding excessive resistance to gas flow, thus maintaining the normal balance of air pressure inside and outside the hydraulic oil tank 1. Preferably, in this embodiment, the first filter plate 5 is tilted downwards at an angle of 15°.

[0065] Furthermore, in some embodiments, such as Figures 1 to 7As shown, multiple first filter holes 51 are evenly distributed on the first filter plate 5, and the diameter of the first filter holes 51 is 4-8 mm. This size of the first filter holes 51 allows gas to pass through while simultaneously blocking and separating larger oil mist particles. The even distribution ensures uniform filtration. While effectively separating oil mist, it also ensures normal gas flow, further improving the oil-liquid separation effect. Preferably, in this embodiment, as... Figures 1 to 7 As shown, the diameter of the first filter hole 51 is 6 mm.

[0066] Optionally, in some embodiments, such as Figures 1 to 7 As shown, the oil-liquid separation device of the pressing machine also includes a second filter plate 6. The second filter plate 6 is inclined downwards inside the separation pipe 2. The downward inclination structure allows the separated oil to flow back to the hydraulic oil tank 1 easily along the plate surface. The second filter plate 6 is located above the first filter plate 5, and the second filter plate 6 has multiple second filter holes 61. By using the second filter plate 6 to perform secondary filtration and separation on the basis of the first filter plate 5, the oil mist content is further reduced, and the oil-liquid separation effect is enhanced.

[0067] Furthermore, in some embodiments, the second filter plate 6 is tilted downwards at an angle of 10-20°. This tilt angle range ensures that the separated oil flows smoothly back to the hydraulic oil tank 1 along the plate surface, without excessively obstructing airflow due to an excessively large tilt angle. This ensures smooth oil return while avoiding excessive resistance to gas flow, thus maintaining the normal balance of air pressure inside and outside the hydraulic oil tank 1. Preferably, in this embodiment, the second filter plate 6 is tilted downwards at an angle of 15°.

[0068] Furthermore, in some embodiments, such as Figures 1 to 7 As shown, a plurality of second filter holes 61 are evenly distributed on the second filter plate 6, and the pore diameter of the second filter holes 61 is 4-8 mm. This pore size allows gas to pass through while simultaneously blocking and separating larger oil mist particles. The even distribution ensures uniform filtration. While effectively separating oil mist, normal gas flow is ensured, further improving the oil-liquid separation effect. Preferably, in this embodiment, as... Figures 1 to 7 As shown, the diameter of the second filter hole 61 is 6 mm.

[0069] Optionally, in some embodiments, such as Figures 1 to 7As shown, both the first filter plate 5 and the second filter plate 6 are semi-circular in shape; the first filter plate 5 and the second filter plate 6 are staggered horizontally. The semi-circular shape combined with the staggered arrangement extends the airflow path within the separation pipe 2, increases the contact opportunity between the airflow and the filter plates, prevents direct airflow, enhances the oil mist collision effect, and improves the efficiency of oil-liquid separation, while not completely obstructing gas flow. This improves the oil-liquid separation effect while ensuring normal gas flow, allowing more oil mist to be separated.

[0070] Optionally, in some embodiments, such as Figures 1 to 7 As shown, the height of the separation pipe 2 is 600-1000 mm. This height range can accommodate components such as the separation mechanism 4, the first filter plate 5, and the second filter plate 6, providing sufficient installation and working space for each component, while avoiding excessive airflow resistance due to excessive pipe height. This ensures the normal operation of the separation mechanism 4, the first filter plate 5, and the second filter plate 6, and avoids adverse effects on gas flow caused by unreasonable pipe height, ensuring the balance of air pressure inside and outside the hydraulic oil tank 1. Preferably, in this embodiment, the height of the separation pipe 2 is 800 mm.

[0071] Optionally, in some embodiments, such as Figures 1 to 7 As shown, the oil-liquid separation device of the pressing machine also includes a pressure detection mechanism 7, which is installed on the air cap filter element 3. The pressure detection mechanism 7 monitors the pressure inside the air cap filter element 3 in real time. When the air cap filter element 3 becomes clogged, its internal pressure increases. The pressure detection mechanism 7 can detect this change in a timely manner and send a signal, thus promptly identifying the clogging of the air cap filter element 3 and reminding the operator to replace the filter element in time. This avoids problems such as cracking of the welded panel caused by increased pressure in the hydraulic oil tank 1 due to filter element clogging, improving the safety and reliability of the equipment. In this embodiment, the pressure detection mechanism 7 is a pressure gauge.

[0072] This embodiment also relates to a pressing machine, including an oil-liquid separation device for any of the pressing machines provided in the above embodiments. In this embodiment, the pressing machine is a hydraulic pressing machine for pulp board paper. The oil-liquid separation device and pressing machine of this embodiment physically isolate the air cap filter element 3 from the hydraulic oil tank 1 by setting a separation pipe 2. A separation mechanism 4, a first filter plate 5, and a second filter plate 6 are installed within the separation pipe 2 to perform multi-stage oil-liquid separation, effectively reducing the erosion of the air cap filter element 3 by oil mist, lowering the probability of the air cap filter element 3 clogging due to adsorption of dust and paper fibers, and extending the service life of the air cap filter element 3. Simultaneously, the pressure detection mechanism 7 can promptly detect pressure changes within the air cap filter element 3, reminding the user to replace the filter element in a timely manner, avoiding the problem of welded panel cracking caused by increased pressure in the hydraulic oil tank 1, extending the service life of the hydraulic oil tank 1, and improving the overall reliability and stability of the pressing machine.

[0073] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. An oil separating device of a baling press, characterized in that, include: Hydraulic oil tank; Air cap filter element; A separation pipe, one end of which is connected to the top of the hydraulic oil tank, and the other end of which is connected to the bottom of the air cap filter element; And a separation mechanism, which is located in the lower middle part of the separation pipe, and is used to separate oil from the gas flow in the separation pipe.

2. The oil separation device of the baling press according to claim 1, characterized in that: The separation mechanism includes a connecting component, a central shaft, and multiple blades; One end of the connecting component is connected to the inner wall of the separating pipe, and the other end of the connecting component is connected to the central axis. The plurality of blades are evenly spaced along the central axis and are connected to the central axis.

3. The oil separation device of the baling press according to claim 1, characterized in that: The oil-liquid separation device of the pressing machine also includes a first filter plate, which is inclined downwards and disposed in the separation pipe. The first filter plate is located above the separation mechanism and has a plurality of first filter holes.

4. The oil separation device of the baling press according to claim 3, characterized in that: The oil-liquid separation device of the pressing machine also includes a second filter plate, which is inclined downwards and installed inside the separation pipe. The second filter plate is located above the first filter plate and has a plurality of second filter holes.

5. The oil separation device of a baling press according to claim 4, characterized in that: The first filter plate is semi-circular in shape, and the second filter plate is also semi-circular in shape. The first filter plate and the second filter plate are staggered left and right.

6. The oil separation device of the baling press according to claim 4, characterized in that: The first filter plate is tilted downward at an angle of 10-20°, and the second filter plate is tilted downward at an angle of 10-20°.

7. The oil separation device of the baling press according to claim 4, characterized in that: Multiple first filter holes are evenly distributed on the first filter plate, and the diameter of the first filter holes is 4-8 mm; Multiple second filter holes are evenly distributed on the second filter plate, and the diameter of the second filter holes is 4-8 mm.

8. The oil separation device of the baling press according to claim 1, characterized in that: The height of the separation pipe is 600-1000 mm.

9. The oil separation device of a baling press according to claim 1, characterized in that: The oil-liquid separation device of the pressing machine also includes a pressure detection mechanism, which is installed on the air cap filter element and is used to detect the pressure inside the air cap filter element.

10. A bale press characterized in that, The oil-liquid separation device includes any one of the pressing machines described in claims 1 to 9 above.

Images