Paper pulp molding hot press forming machine with water separation recovery function

Abstract

The application discloses a paper pulp molding hot-press forming machine with water separation and recovery function and belongs to the technical field of paper pulp molding, which comprises a paper pulp pool, a cold upper mold, a cold lower mold, an upper hot mold one, a lower hot mold one, an upper hot mold two, a lower hot mold two, a lifting mechanism, a vacuum negative pressure adsorption pump body and a vacuum water separation and recovery mechanism, the lifting mechanism is arranged above the paper pulp pool, the output end of the lifting mechanism is fixed with the cold upper mold, and the cold upper mold is further connected with the vacuum negative pressure adsorption pump body; the upper hot mold one and the lower hot mold one are arranged on the left side of the support, the upper hot mold two and the lower hot mold two are arranged on the right side of the support, the upper hot mold one and the upper hot mold two are controlled to be lifted by the lifting mechanism, the upper hot mold one and the upper hot mold two are connected with the vacuum negative pressure adsorption pump body; the bottom of the paper pulp pool is fixed with the cold lower mold, and the paper pulp pool is connected with the vacuum water separation and recovery mechanism. The application can recycle water resources, automatically starts pulp supplementing operation according to the progress of a working procedure, guarantees uniform and stable pulp concentration in the pulp supplementing process and realizes continuous production.

Description

Technical Field

[0001] This invention relates to the field of pulp molding technology, and in particular to a pulp molding hot press forming machine with water recovery function. Background Technology

[0002] Pulp molding products are environmentally friendly packaging materials made from waste paper or plant fibers through molding, hot pressing, and other processes. They are widely used in electronic products, catering utensils, industrial cushioning packaging, and other fields. Currently, the production process of pulp molding mainly includes two major stages: suction molding and hot pressing and drying. The suction process usually uses vacuum adsorption to deposit pulp fibers on the surface of the mold to form a wet preform. The wet preform is then transferred to a hot pressing mold for high-temperature and high-pressure shaping.

[0003] During the operation of pulp molding and hot pressing equipment, the pulp in the pulp tank is continuously consumed as production continues, requiring timely replenishment of fresh pulp to maintain normal molding operations. However, in existing equipment, the pulp replenishment operation in the pulp tank mostly relies on manual monitoring and manual operation.

[0004] To address the shortcomings of the existing technologies, there is an urgent need to develop a pulp molding hot press with water recovery function. This machine can recycle water resources and automatically start pulp replenishment operations based on the pulp consumption in the pulp tank. During the pulp replenishment process, it ensures that the pulp concentration is uniform and stable, thereby achieving continuous production, improving product qualification rate, and reducing labor costs. Summary of the Invention

[0005] The purpose of this invention is to provide a pulp molding hot press forming machine with water recovery function, which can recycle water resources and automatically start discharge and pulp replenishment operations according to the working rhythm of the equipment, and ensure uniform and stable pulp concentration during the pulp replenishment process, thereby realizing continuous production.

[0006] To achieve the above objectives, the present invention provides a pulp molding hot press forming machine with water separation and recovery function, including a pulp tank, a cold upper mold, a cold lower mold, an upper hot mold 1, a lower hot mold 1, an upper hot mold 2, a lower hot mold 2, a lifting mechanism, a vacuum negative pressure adsorption pump body, a vacuum water separation and recovery mechanism, and a support. The pulp tank is provided at the middle position of the support, and a lifting mechanism is provided above the pulp tank. The cold upper mold is fixed at the output end of the lifting mechanism, and the cold upper mold is also connected to the vacuum negative pressure adsorption pump body. The left side of the support frame is equipped with an upper heating mold and a lower heating mold. The upper heating mold is raised and lowered by a lifting mechanism, and the lower heating mold is moved horizontally by a horizontal moving mechanism. The right side of the support frame is equipped with an upper heating mold and a lower heating mold. The upper heating mold is raised and lowered by a lifting mechanism, and the lower heating mold is moved horizontally by a horizontal moving mechanism. Both the upper heating mold and the upper heating mold are connected to a vacuum negative pressure adsorption pump. A cold lower mold is fixed at the bottom of the pulp tank, and the pulp tank is connected to a vacuum water separation and recovery mechanism.

[0007] Preferably, the vacuum water recovery mechanism includes a vacuum pump, a pipe, and a filter screen. The filter screen is fixed to the top of the cold mold. The vacuum pump has a suction port fixed to the bottom of the pulp tank and connected to the cold mold. The vacuum pump can draw water and store the pulp on the filter screen of the cold mold. The output end of the vacuum pump is connected to a pipe, which is connected to the homogenization tank.

[0008] Preferably, a pulp inlet is provided on the side wall of the pulp tank, one end of a connecting pipe is connected to the pulp inlet, and the other end of the connecting pipe is connected to a pulp delivery pump, the input end of which is connected to the homogenizing tank.

[0009] Preferably, the homogenizing tank is equipped with a stirring mechanism, which includes a drive motor, a stirring rod, and stirring blades. The drive motor is fixed to the top of the homogenizing tank, the output end of the drive motor is fixed to the top of the stirring rod, and the stirring blades are fixed on the stirring rod. Both the stirring blades and the stirring rod are located inside the homogenizing tank.

[0010] Preferably, the top of the outer wall of the homogenizing tank is also connected to one end of the cylindrical shell, and the other end of the cylindrical shell is located inside the slurry storage tank and is connected to the slurry storage tank.

[0011] Preferably, a stirring cage is provided inside the cylindrical shell, one end of the stirring cage is rotatably connected to the wall of the slurry storage tank, the stirring cage drive motor is fixed on the wall of the slurry storage tank, and the output end of the stirring cage drive motor is driven by the transmission shaft of the stirring cage.

[0012] Preferably, the top of the cylindrical shell located in the pulp storage tank has an opening, through which the pulp in the pulp storage tank enters the stirring cage.

[0013] Preferably, the bottom of the cold upper mold, the first upper hot mold, and the second upper hot mold are all provided with channels, and each vacuum negative pressure adsorption pump is connected to a channel. The vacuum negative pressure adsorption pump draws water so that the cold upper mold, the first upper hot mold, and the second upper hot mold can adsorb pulp. A collection platform is provided directly below the first and second upper heating molds. The first and second upper heating molds can vacuum negative pressure adsorb the molded product and use a lifting mechanism to lower it onto the collection platform.

[0014] Preferably, the upper heating mold 1, lower heating mold 1, upper heating mold 2 and lower heating mold 2 are equipped with heating plates that can heat the pulp.

[0015] Preferably, the horizontal moving mechanism includes a track and a cylinder. The track is horizontally mounted on the support. The lower hot mold 1 and the lower hot mold 2 are slidably connected in the corresponding track. The movable ends of the two cylinders are horizontally mounted and fixed to the side ends of the lower hot mold 1 and the lower hot mold 2, respectively. The lifting mechanism includes a second cylinder and a guide column. The guide column is vertically mounted on the support. The fixed end of the second cylinder is fixed on the support. The movable end of the second cylinder is vertically mounted and fixed to the cold upper mold, the first upper hot mold, and the second upper hot mold, respectively. The cold upper mold, the first upper hot mold, and the second upper hot mold move up and down along the guide column, respectively.

[0016] The advantages and positive effects of the pulp molding hot press with water recovery function described in this invention are as follows: (1) By setting up a vacuum water recovery mechanism, the present invention can return the water extracted during the formation of the blank on the surface of the cold die to the homogenizing tank for recycling, which significantly reduces the consumption of production water and realizes closed-loop water resource recovery, meeting the requirements of green and environmentally friendly production. The feeding system composed of the pulp storage tank, the stirring cage and the cylindrical shell can automatically replenish the pulp in the homogenizing tank when the pulp volume is insufficient, reducing manual intervention, realizing long-term automated production and reducing labor intensity.

[0017] (2) A collection platform is provided directly below the upper heating mold 1 and the upper heating mold 2. The upper heating mold 1 and the upper heating mold 2 can vacuum negative pressure adsorb the molded product and use the lifting mechanism to put it down onto the collection platform, reducing the need to add other mechanical structures or manually collect the molded product from the mold.

[0018] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a pulp molding hot pressing method with water recovery function according to the present invention; Figure 2 This is a schematic diagram showing the connection between the slurry tank, homogenizing tank, and slurry storage tank of the present invention; Figure 3 for Figure 2 Side view; Figure 4 for Figure 2 Another perspective illustration; Figure 5 for Figure 2 A sectional view.

[0020] Figure Labels 1. Pulp tank; 2. Upper cold die; 3. Lower cold die; 4. Upper hot die 1; 5. Lower hot die 1; 6. Horizontal moving mechanism; 601. Track; 602. Cylinder 1; 7. Upper heating mold 2; 8. Lower heating mold 2; 9. Lifting mechanism; 901. Cylinder 2; 902. Guide pillar; 10. Vacuum water recovery mechanism; 101. Vacuum pump; 102. Pipeline; 11. Vacuum negative pressure adsorption pump body; 12. Filter screen; 13. Homogenizing tank; 14. Slurry storage tank; 15. Stirring cage; 16. Cylindrical shell; 17. Opening; 18. Stirring mechanism; 19. Stirring cage drive motor; 20. Slurry transfer pump; 21. Connecting pipe; 22. Collection platform. Detailed Implementation

[0021] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing the 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 invention. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] In this application, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. In case of any inconsistency, the meaning set forth in this specification or derived from the content described herein shall prevail. Furthermore, the terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit the scope of this application.

[0023] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] like Figures 1-5 As shown, a pulp molding hot press forming machine with water separation and recovery function includes a pulp tank 1, a cold upper mold 2, a cold lower mold 3, an upper hot mold 1 4, a lower hot mold 1 5, an upper hot mold 2 7, a lower hot mold 2 8, a lifting mechanism 9, a vacuum negative pressure adsorption pump body 11, a vacuum water separation and recovery mechanism 10, and a support. The pulp tank 1 is set at the middle position of the support. A lifting mechanism 9 is set above the pulp tank 1. The cold upper mold 2 is fixed at the output end of the lifting mechanism 9. The cold upper mold 2 is also connected to the vacuum negative pressure adsorption pump body 11.

[0025] The left side of the support frame has an upper heating mold 4 and a lower heating mold 5. The upper heating mold 4 is raised and lowered by a lifting mechanism 9, and the lower heating mold 5 is moved horizontally by a horizontal moving mechanism 6. The right side of the support frame has an upper heating mold 7 and a lower heating mold 8. The upper heating mold 7 is raised and lowered by a lifting mechanism 9, and the lower heating mold 8 is moved horizontally by a horizontal moving mechanism 6. Both the upper heating mold 4 and the upper heating mold 7 are connected to a vacuum negative pressure adsorption pump body 11. A cold lower mold 3 is fixed to the bottom of the pulp tank 1, and the pulp tank 1 is connected to a vacuum water separation and recovery mechanism 10.

[0026] The vacuum water separation and recovery mechanism 10 includes a vacuum pump 101, a pipe 102, and a filter screen 12. The filter screen 12 is fixed on the top of the cold mold 3. The vacuum pump 101 has a suction port fixed at the bottom of the pulp tank 1 and is connected to the cold mold 3. The vacuum pump 101 can suck water and store the pulp on the filter screen 12 of the cold mold 3. The output end of the vacuum pump 101 is connected to the pipe 102, and the pipe 102 is connected to the homogenizing tank 13.

[0027] A pulp inlet is provided on the side wall of the pulp tank 1. One end of the connecting pipe 21 is connected to the pulp inlet, and the other end of the connecting pipe 21 is connected to the pulp delivery pump 20. The input end of the pulp delivery pump 20 is connected to the homogenizing tank 13.

[0028] The homogenizing tank 13 is equipped with a stirring mechanism 18, which includes a drive motor, a stirring rod, and stirring blades. The drive motor is fixed to the top of the homogenizing tank 13, and the output end of the drive motor is fixed to the top of the stirring rod. The stirring blades are fixed on the stirring rod, and both the stirring blades and the stirring rod are located inside the homogenizing tank 13.

[0029] The top of the outer wall of the homogenizing tank 13 is also connected to one end of the cylindrical shell 16, and the other end of the cylindrical shell 16 is located inside the slurry storage tank 14 and is connected to the slurry storage tank 14.

[0030] A stirring cage 15 is installed inside the cylindrical shell 16. One end of the stirring cage 15 is rotatably connected to the wall of the slurry storage tank 14. The stirring cage drive motor 19 is fixed on the wall of the slurry storage tank 14, and the output end of the stirring cage drive motor 19 is connected to the drive shaft of the stirring cage 15.

[0031] The top of the cylindrical shell 16 located in the pulp storage tank 14 has an opening 17, through which the pulp in the pulp storage tank 14 enters the stirring cage.

[0032] The bottom of the cold upper mold 2, the upper heating mold 1 4, and the upper heating mold 2 7 are all provided with channels. Each vacuum negative pressure adsorption pump body 11 is connected to the channel. The vacuum negative pressure adsorption pump body 11 draws and enables the cold upper mold 2, the upper heating mold 1 4, and the upper heating mold 2 7 to adsorb pulp.

[0033] A collection platform 22 is provided directly below the upper heating mold 4 and the upper heating mold 7. The upper heating mold 4 and the upper heating mold 7 can vacuum negative pressure adsorb the molded product and use the lifting mechanism 9 to lower it onto the collection platform 22.

[0034] The upper heating mold 1 4, the lower heating mold 1 5, the upper heating mold 2 7, and the lower heating mold 2 8 are equipped with heating plates that can heat the pulp.

[0035] The horizontal moving mechanism 6 includes a track 601 and a cylinder 602. The track 601 is horizontally mounted on the support. The lower hot mold 5 and the lower hot mold 8 are slidably connected in the corresponding track 601. The movable ends of the two cylinders 602 are horizontally mounted and fixed to the side ends of the lower hot mold 5 and the lower hot mold 8, respectively.

[0036] The lifting mechanism 9 includes a second cylinder 901 and a guide column 902. The guide column 902 is vertically mounted on the bracket. The fixed end of the second cylinder 901 is fixed on the bracket. The movable end of the second cylinder 901 is vertically mounted and fixed to the cold upper mold 2, the first upper hot mold 4, and the second upper hot mold 7, respectively. The cold upper mold 2, the first upper hot mold 4, and the second upper hot mold 7 move up and down along the guide column 902, respectively.

[0037] The workflow of this invention is as follows: First, the stirring mechanism 18 in the homogenizing tank 13 continuously stirs the pulp to ensure uniform mixing and prevent sedimentation. The pulp delivery pump 20 is started and sends the uniformly mixed pulp in the homogenizing tank 13 into the pulp tank 1 through the pulp inlet via the connecting pipe 21, so that the pulp tank 1 maintains an appropriate amount of pulp.

[0038] Second, the vacuum pump 101 is started to suck water from the bottom of the cooling die 3, leaving the pulp on the filter screen 12, so that the pulp fibers form a blank on the surface of the cooling die 3, while the water flows back to the homogenizing tank 13 through the pipe 102. When the amount of pulp in the homogenizing tank 13 is insufficient, the stirring cage drive motor 19 drives the stirring cage to transport the pulp in the storage tank 14 to the homogenizing tank 13.

[0039] Third, the lifting mechanism 9 drives the cold upper mold 2 to descend into the pulp tank 1. Due to the action of the vacuum negative pressure adsorption pump body 11, the cold upper mold 2 can adsorb the blank and rise accordingly.

[0040] Fourth, the lower hot mold 5 is driven by the horizontal moving mechanism 6 to move horizontally below the cold upper mold 2. Then, the lifting mechanism 9 drives the cold upper mold 2 to descend and place the blank in the lower hot mold 5.

[0041] Fifth, the lower hot mold 5 and the upper hot mold 4 are closed to heat and shape the blank.

[0042] Sixth, after the lower hot mold 5 and the upper hot mold 4 separate, the upper hot mold 4 adsorbs the molded product and places it on the collection platform.

[0043] Seventh, when the lower hot mold 15 and the upper hot mold 14 are closed, another set of lower hot mold 2 8 and upper hot mold 2 7 can receive the material from the cold upper mold 2 for processing and shaping.

[0044] 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 preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A pulp molding hot press with water recovery function, characterized in that: It includes a pulp tank, a cold upper mold, a cold lower mold, an upper hot mold 1, a lower hot mold 1, an upper hot mold 2, a lower hot mold 2, a lifting mechanism, a vacuum negative pressure adsorption pump body, a vacuum water separation and recovery mechanism, and a support. The pulp tank is located in the middle of the support. A lifting mechanism is located above the pulp tank. The output end of the lifting mechanism is fixed to the cold upper mold. The cold upper mold is also connected to the vacuum negative pressure adsorption pump body. The left side of the support frame is equipped with an upper heating mold and a lower heating mold. The upper heating mold is raised and lowered by a lifting mechanism, and the lower heating mold is moved horizontally by a horizontal moving mechanism. The right side of the support frame is equipped with an upper heating mold and a lower heating mold. The upper heating mold is raised and lowered by a lifting mechanism, and the lower heating mold is moved horizontally by a horizontal moving mechanism. Both the upper heating mold and the upper heating mold are connected to a vacuum negative pressure adsorption pump. A cold lower mold is fixed at the bottom of the pulp tank, and the pulp tank is connected to a vacuum water separation and recovery mechanism.

2. The pulp molding hot press forming machine with water recovery function according to claim 1, characterized in that: The vacuum water separation and recovery mechanism includes a vacuum pump, a pipe, and a filter screen. The filter screen is fixed to the top of the cold mold. The vacuum pump has a suction port fixed to the bottom of the pulp tank and connected to the cold mold. The vacuum pump can draw water and store the pulp on the filter screen of the cold mold. The output end of the vacuum pump is connected to a pipe, which is connected to the homogenization tank.

3. A pulp molding hot press with water recovery function according to claim 2, characterized in that: A pulp inlet is provided on the side wall of the pulp tank. One end of the connecting pipe is connected to the pulp inlet, and the other end of the connecting pipe is connected to a pulp delivery pump. The input end of the pulp delivery pump is connected to the homogenizing tank.

4. A pulp molding hot press with water recovery function according to claim 3, characterized in that: The homogenizing tank is equipped with a stirring mechanism, which includes a drive motor, a stirring rod, and stirring blades. The drive motor is fixed to the top of the homogenizing tank, and the output end of the drive motor is fixed to the top of the stirring rod. The stirring blades are fixed on the stirring rod, and both the stirring blades and the stirring rod are located inside the homogenizing tank.

5. A pulp molding hot press with water recovery function according to claim 4, characterized in that: The top of the outer wall of the homogenizing tank is also connected to one end of the cylindrical shell, and the other end of the cylindrical shell is located inside the slurry storage tank and is connected to the slurry storage tank.

6. A pulp molding hot press with water recovery function according to claim 5, characterized in that: The cylindrical shell contains a stirring cage, one end of which is rotatably connected to the wall of the slurry storage tank. The stirring cage drive motor is fixed to the wall of the slurry storage tank, and the output end of the stirring cage drive motor is connected to the drive shaft of the stirring cage.

7. A pulp molding hot press with water recovery function according to claim 6, characterized in that: An opening is provided at the top of the cylindrical shell located inside the pulp storage tank, through which the pulp in the pulp storage tank enters the stirring cage.

8. A pulp molding hot press with water recovery function according to claim 7, characterized in that: The bottom of the cold upper mold, upper heating mold one, and upper heating mold two are all provided with channels, and each vacuum negative pressure adsorption pump body is connected to the channel. The vacuum negative pressure adsorption pump body draws and enables the cold upper mold, upper heating mold one, and upper heating mold two to adsorb pulp. A collection platform is provided directly below the first and second upper heating molds. The first and second upper heating molds can vacuum negative pressure adsorb the molded product and use a lifting mechanism to lower it onto the collection platform.

9. A pulp molding hot press with water recovery function according to claim 8, characterized in that: The upper heating mold 1, lower heating mold 1, upper heating mold 2, and lower heating mold 2 are equipped with heating plates that can heat the pulp.

10. A pulp molding hot press with water recovery function according to claim 9, characterized in that: The horizontal moving mechanism includes a track and a cylinder. The track is horizontally set on the support. The lower hot mold 1 and the lower hot mold 2 are slidably connected in the corresponding track. The movable ends of the two cylinders are horizontally set and fixed to the side ends of the lower hot mold 1 and the lower hot mold 2 respectively. The lifting mechanism includes a second cylinder and a guide column. The guide column is vertically mounted on the support. The fixed end of the second cylinder is fixed on the support. The movable end of the second cylinder is vertically mounted and fixed to the cold upper mold, the first upper hot mold, and the second upper hot mold, respectively. The cold upper mold, the first upper hot mold, and the second upper hot mold move up and down along the guide column, respectively.

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