A pulp molding vacuum automatic drainage device
By employing a design that alternates between two vacuum drain tanks on the pulp molding machine, combined with a level gauge and controller, the problem of easy clogging of the vacuum drain device is solved, ensuring timely discharge of pulp water and guaranteeing production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DEZHOU BENO PACKAGING PROD CO LTD
- Filing Date
- 2025-08-02
- Publication Date
- 2026-06-16
Smart Images
Figure CN224363137U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of pulp molding product production equipment, and in particular to a pulp molding vacuum automatic drainage device. Background Technology
[0002] Pulp products such as egg trays or fruit trays used to support items in daily life are usually made of pulp blanks. In the production process of pulp blanks, a vacuum drainage device generates negative pressure suction on the pulp mold of the pulp molding machine, adsorbing the pulp in the pulp mold onto the surface of the mesh in the mold and sucking out a large amount of pulp water, thereby forming a wet pulp blank.
[0003] Existing vacuum drainage devices, when draining the pulp mold on a pulp molding machine, suck out pulp water containing a certain amount of pulp raw materials. If this pulp water is discharged into the drainage pipe without treatment, it can easily cause blockage. During production, workers cannot observe or monitor the water level in the vacuum drainage device, resulting in the inability to drain the pulp water in the vacuum drainage device in a timely manner. Furthermore, under negative pressure, it is difficult to drain the pulp water from the vacuum drainage device. If the negative pressure is released, it will affect the production efficiency of pulp molding products. Utility Model Content
[0004] The purpose of this invention is to provide an automatic vacuum drainage device for pulp molding, which can monitor the water level in the vacuum drainage tank and drain the pulp water in a timely manner without affecting production efficiency and preventing blockage of the drainage pipe.
[0005] To achieve the above and other related objectives, this utility model provides an automatic vacuum drainage device for pulp molding, comprising: two vacuum drainage tanks, a pulp water treatment device, and a controller. The two vacuum drainage tanks are a first vacuum drainage tank and a second vacuum drainage tank. Each vacuum drainage tank has a vacuum port and an exhaust port at its top, a water outlet at its bottom, and a water inlet at the top of its side wall. A level gauge is installed on the side wall of each vacuum drainage tank. A vacuum valve is installed at each of the two vacuum ports, an exhaust valve is installed at each of the two exhaust ports, a water outlet valve is installed at each of the two water outlets, and a level gauge is installed at each of the two water inlets. The system includes an inlet valve and two vacuum valves connected to a vacuum device via pipes. The inlet valves are also connected to a pulp molding machine via pipes. The pulp treatment device includes a pulp treatment tank with two inlets on the top of its side wall. These inlets are connected to two outlet valves via pipes. A baffle plate is located on the inner wall of the pulp treatment tank below the inlets. A filter can be detachably installed in the middle of the baffle plate. An outlet is located at the bottom of the pulp treatment tank and is connected to a drainage device via a pipe assembly. The controller is electrically connected to the two vacuum valves, two exhaust valves, two outlet valves, two inlet valves, and the drainage device.
[0006] In one example of the automatic vacuum drainage device for pulp molding of this utility model, the first vacuum drainage tank is provided with a first vacuum port and a first exhaust port at the top, a first water outlet at the bottom of the first vacuum drainage tank, a first water inlet at the top of the side wall of the first vacuum drainage tank, a first level gauge installed on the side wall of the first vacuum drainage tank, a first vacuum valve installed at the first vacuum port, a first exhaust valve installed at the first exhaust port, a first water outlet valve installed at the first water outlet, and a first water inlet valve installed at the first water inlet.
[0007] In one example of the automatic vacuum drainage device for pulp molding of this utility model, the first vacuum valve is connected to the vacuum pipe through the first pipe, the vacuum pipe is connected to the vacuum device, the first water inlet valve is connected to the water pumping pipe through the second pipe, and the water pumping pipe is connected to the pulp molding machine.
[0008] In one example of the automatic vacuum drainage device for pulp molding of this utility model, the top of the second vacuum drainage tank is provided with a second vacuum port and a second exhaust port, the bottom of the second vacuum drainage tank is provided with a second water outlet, the top of the side wall of the second vacuum drainage tank is provided with a second water inlet, a second level gauge is installed on the side wall of the second vacuum drainage tank, a second vacuum valve is installed at the second vacuum port, a second exhaust valve is installed at the second exhaust port, a second water outlet valve is installed at the second water outlet, and a second water inlet valve is installed at the second water inlet.
[0009] In one example of the automatic vacuum drainage device for pulp molding of this utility model, the second vacuum valve is connected to the vacuum pipeline through the third pipeline, the vacuum pipeline is connected to the vacuum device, the second water inlet valve is connected to the water pumping pipeline through the fourth pipeline, and the water pumping pipeline is connected to the pulp molding machine.
[0010] In one example of the automatic vacuum drainage device for pulp molding of this utility model, the baffle plate is annular, the outer wall of the baffle plate is fixedly connected to the inner wall of the pulp treatment tank, the baffle plate has a first mounting hole in the middle, the filter barrel is inserted into the first mounting hole, the top surface of the baffle plate around the first mounting hole has an annular groove, and the outer wall of the top of the filter barrel has an annular wing plate, the annular groove cooperates with the wing plate.
[0011] In one example of the automatic vacuum drainage device for pulp molding of this utility model, a handle is provided on the inner wall of the top of the filter bucket, and a first through hole is provided in the middle of the top surface of the pulp treatment tank. The handle passes through the first through hole, and the diameter of the first through hole is larger than the outer diameter of the filter bucket.
[0012] In one example of the automatic vacuum drainage device for pulp molding of this utility model, a discharge valve is provided at the discharge port, the drainage device includes a drainage pump, the discharge valve is connected to the inlet end of the drainage pump through a pipe, and the outlet end of the drainage pump is connected to the drainage pipe.
[0013] In one example of the automatic vacuum drainage device for pulp molding of this utility model, an observation window is provided on the side wall of each of the two vacuum drainage tanks along the extension direction of the side wall.
[0014] In one example of the automatic vacuum drainage device for pulp molding of this utility model, the level gauge includes a level tube, the top and bottom of the level tube are respectively provided with a first connection port and a second connection port, the side wall of the vacuum drainage tank is provided with a third connection port and a fourth connection port, the first connection port is connected to the third connection port, the second connection port is connected to the fourth connection port, a float is provided inside the level tube, the outer wall of the float is slidably connected to the inner wall of the level tube, and a trigger sensor is provided at the top of the level tube, the trigger sensor is electrically connected to the controller.
[0015] This utility model relates to an automatic vacuum drainage device for pulp molding machines. It utilizes two vacuum drainage tanks alternately to perform vacuum drainage of the pulp molds on the pulp molding machine. While the first vacuum drainage tank is in operation, the second vacuum drainage tank remains in standby mode. A level gauge monitors the water level in the first vacuum drainage tank. When the water level in the first tank reaches the upper limit of the level gauge, the controller closes the vacuum valve and inlet valve on the first tank and opens the exhaust valve. Simultaneously, the controller opens the vacuum valve and inlet valve on the second tank, using it for vacuum drainage. Then, the controller opens the outlet valve on the first tank, allowing the pulp water to flow through a pipe into the pulp treatment tank. The pulp water then enters the filter tank under the action of a baffle plate and is discharged through the outlet via the drainage device, thus preventing pipe blockage. This utility model can monitor the water level in the vacuum drainage tanks and promptly discharge the pulp water without affecting production efficiency and preventing drainage pipe blockage. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the automatic vacuum drainage device for pulp molding according to this utility model;
[0017] Figure 2 This is a schematic diagram of the internal structure of the pulp treatment tank in one embodiment of the automatic vacuum drainage device for pulp molding of this utility model;
[0018] Figure 3 This is a schematic diagram of the level gauge in one embodiment of the automatic vacuum drainage device for pulp molding of this utility model.
[0019] Component designation:
[0020] 100 Vacuum drain tank; 110 First vacuum drain tank; 120 Second vacuum drain tank; 130 Vacuum port; 131 Vacuum valve; 140 Exhaust port; 141 Exhaust valve; 150 Outlet; 151 Outlet valve; 160 Inlet; 161 Inlet valve; 170 Level gauge; 171 Level pipe; 172 First connection port; 173 Second connection port; 174 Float; 175 Trigger sensor; 180 Observation window; 200 Slurry treatment device; 210 Slurry treatment tank; 211 Feed inlet; 212 Baffle plate; 213 Filter barrel; 214 Handle; 215 Discharge port; 216 First through hole; 220 Discharge valve; 230 Drainage pump; 300 Vacuum pipeline; 310 First pipeline; 320 Third pipeline; 400 Pumping pipeline; 410 Second pipeline; 420 Fourth pipeline. Detailed Implementation
[0021] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.
[0022] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise specified in this invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention, as well as the prior art known to those skilled in the art and the description of this invention, may be implemented using any prior art methods, equipment, and materials similar to or equivalent to those in the embodiments of this invention.
[0023] Please see Figures 1 to 3This utility model provides an automatic vacuum drainage device for pulp molding, comprising: two vacuum drainage tanks 100, a pulp water treatment device 200, and a controller. The two vacuum drainage tanks 100 are a first vacuum drainage tank 110 and a second vacuum drainage tank 120. Each vacuum drainage tank 100 has a vacuum port 130 and an exhaust port 140 at its top, a water outlet 150 at its bottom, and a water inlet 160 at the top of its side wall. A level gauge 170 is installed on the side wall of the vacuum drain tank 100. A vacuum valve 131 is installed at each of the two vacuum ports 130. An exhaust valve 141 is installed at each of the two exhaust ports 140. An outlet valve 151 is installed at each of the two outlet ports 150. An inlet valve 161 is installed at each of the two inlets 160. The two vacuum valves 131 are connected to the vacuum device through pipes. The two inlet valves 161 are connected to the pulp molding machine through pipes. The slurry treatment device 200 includes a slurry treatment tank 210. Two inlets 211 are located on the top of the side wall of the slurry treatment tank 210. Each inlet 211 is connected to one of the two outlet valves 151 via pipes. A baffle plate 212 is located on the inner wall of the slurry treatment tank 210 below the two inlets 211. A filter barrel 213 is detachably installed in the middle of the baffle plate 212. An outlet 215 is located at the bottom of the slurry treatment tank 210 and is connected to a drainage device via a pipe assembly. The controller is electrically connected to the two vacuum valves 131, the two exhaust valves 141, the two outlet valves 151, the two inlet valves 161, and the drainage device.
[0024] This invention achieves vacuum drainage of the pulp mold on a pulp molding machine by alternating the use of two vacuum drainage tanks 100. When the first vacuum drainage tank 110 is used for vacuum drainage, the second vacuum drainage tank 120 is in standby mode. The water level in the first vacuum drainage tank 110 can be monitored by a level gauge 170. When the water level in the first vacuum drainage tank 110 reaches the upper limit of the level gauge 170, the controller controls the vacuum valve 131 and water inlet valve 161 on the first vacuum drainage tank 110 to close and the exhaust valve 141 to open. Simultaneously, it controls the vacuum valve 131 and water inlet valve 161 on the second vacuum drainage tank 120 to open, thus using the second vacuum drainage tank 120 for vacuum drainage. Then the controller controls the outlet valve 151 on the first vacuum drain tank 110 to open. The slurry in the first vacuum drain tank 110 enters the slurry treatment tank 210 through the inlet 211 via the pipeline. Under the action of the baffle plate 212, the slurry enters the filter bucket 213. After filtration, it is discharged from the outlet 215 through the drainage device, thereby avoiding pipe blockage.
[0025] Please see Figure 1In one example of the automatic vacuum drainage device for pulp molding of this utility model, the first vacuum drainage tank 110 is provided with a first vacuum port and a first exhaust port at the top, a first water outlet at the bottom, a first water inlet at the top of the side wall of the first vacuum drainage tank 110, a first level gauge installed on the side wall of the first vacuum drainage tank 110, a first vacuum valve installed at the first vacuum port, a first exhaust valve installed at the first exhaust port, a first water outlet valve installed at the first water outlet, and a first water inlet valve installed at the first water inlet. The first vacuum valve is connected to the vacuum pipe 300 through the first pipe 310, and the vacuum pipe 300 is connected to the vacuum device. The first water inlet valve is connected to the pumping pipe 400 through the second pipe 410, and the pumping pipe 400 is connected to the pulp molding machine.
[0026] Please see Figure 1 In one example of the automatic vacuum drainage device for pulp molding of this utility model, the second vacuum drainage tank 120 is provided with a second vacuum port and a second exhaust port at its top, a second water outlet at its bottom, a second water inlet at the top of its side wall, a second level gauge installed on its side wall, a second vacuum valve installed at the second vacuum port, a second exhaust valve installed at the second exhaust port, a second water outlet valve installed at the second water outlet, and a second water inlet valve installed at the second water inlet. The second vacuum valve is connected to the vacuum pipe 300 via a third pipe 320, which is connected to a vacuum device. The second water inlet valve is connected to the pumping pipe 400 via a fourth pipe 420, which is connected to the pulp molding machine.
[0027] Please see Figure 2In one example of the automatic vacuum drainage device for pulp molding of this utility model, the baffle plate 212 is annular, and its outer wall is fixedly connected to the inner wall of the pulp treatment tank 210. A first mounting hole is provided in the middle of the baffle plate 212, and the filter bucket 213 passes through the first mounting hole. An annular groove is provided on the top surface of the baffle plate 212 surrounding the first mounting hole. An annular wing plate is provided on the outer wall of the top of the filter bucket 213, and the annular groove cooperates with the wing plate. A handle 214 is provided on the inner wall of the top of the filter bucket 213, and a first through hole 216 is provided in the middle of the top surface of the pulp treatment tank 210. The handle 214 passes through the first through hole 216, and the diameter of the first through hole 216 is larger than the outer diameter of the filter bucket 213. A discharge valve 220 is provided at the discharge port 215. The drainage device includes a drainage pump 230. The discharge valve 220 is connected to the inlet end of the drainage pump 230 through a pipe, and the outlet end of the drainage pump 230 is connected to a drainage pipe. The filter barrel 213 can be removed from the first through hole 216 using the handle 214, thereby cleaning the impurities inside the filter barrel 213 and rinsing the filter barrel 213. When installing the filter barrel 213, the filter barrel 213 is passed through the first through hole 216 and the first mounting hole in sequence, and then the wing plate at the top of the filter barrel 213 is engaged with the annular groove on the baffle plate 212.
[0028] Please see Figure 1 and Figure 3 In one example of the automatic vacuum drainage device for pulp molding of this utility model, an observation window 180 is provided on the side wall of each of the two vacuum drainage tanks 100 along the extension direction of the side wall. The level gauge 170 includes a level tube 171, and the top and bottom of the level tube 171 are respectively provided with a first connection port 172 and a second connection port 173. The side wall of the vacuum drainage tank 100 is provided with a third connection port and a fourth connection port. The first connection port 172 is connected to the third connection port, and the second connection port 173 is connected to the fourth connection port. A float 174 is provided inside the level tube 171. The outer wall of the float 174 is slidably connected to the inner wall of the level tube 171. A trigger sensor 175 is provided at the top of the level tube 171, and the trigger sensor 175 is electrically connected to the controller. Staff can observe the liquid level and inner wall condition of the vacuum drain tank 100 through the observation window 180. Water in the vacuum drain tank 100 can enter the liquid level pipe 171 through the first connection port 172 and the second connection port 173. Under the action of buoyancy, the float 174 rises or falls with the liquid level. When the top of the float 174 touches the trigger sensor 175, the controller controls the valves on the first vacuum drain tank 110 and the second vacuum drain tank 120 to alternate their working states.
[0029] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A vacuum automatic drainage device for pulp molding, characterized in that, include: Two vacuum drain tanks, namely a first vacuum drain tank and a second vacuum drain tank, are provided with a vacuum port and an exhaust port at the top of each vacuum drain tank, a water outlet at the bottom of each vacuum drain tank, a water inlet at the top of the side wall of each vacuum drain tank, a level gauge installed on the side wall of each vacuum drain tank, a vacuum valve installed at each of the two vacuum ports, an exhaust valve installed at each of the two exhaust ports, a water outlet valve installed at each of the two water outlets, and a water inlet valve installed at each of the two water inlets. The two vacuum valves are connected to a vacuum device through pipes, and the two water inlet valves are connected to a pulp molding machine through pipes. A slurry treatment device includes a slurry treatment tank. The top of the side wall of the slurry treatment tank is provided with two inlets, which are respectively connected to two outlet valves through pipes. A baffle plate is provided on the inner wall of the slurry treatment tank below the two inlets. A filter barrel is detachably installed in the middle of the baffle plate. The bottom of the slurry treatment tank is provided with an outlet, which is connected to a drainage device through a pipe assembly. The controller is electrically connected to the two vacuum valves, the two exhaust valves, the two water outlet valves, the two water inlet valves, and the drainage device.
2. The automatic vacuum drainage device for pulp molding as described in claim 1, characterized in that, The first vacuum drain tank has a first vacuum port and a first exhaust port at the top, a first water outlet at the bottom, a first water inlet at the top of the side wall, a first level gauge installed on the side wall, a first vacuum valve installed at the first vacuum port, a first exhaust valve installed at the first exhaust port, a first water outlet valve installed at the first water outlet, and a first water inlet valve installed at the first water inlet.
3. The automatic vacuum drainage device for pulp molding as described in claim 2, characterized in that, The first vacuum valve is connected to the vacuum pipeline via a first pipe, the vacuum pipeline is connected to the vacuum device, the first water inlet valve is connected to the water pumping pipeline via a second pipe, and the water pumping pipeline is connected to the pulp molding machine.
4. The automatic vacuum drainage device for pulp molding as described in claim 1, characterized in that, The second vacuum drain tank is provided with a second vacuum port and a second exhaust port at the top, a second water outlet at the bottom, a second water inlet at the top of the side wall, a second level gauge on the side wall, a second vacuum valve at the second vacuum port, a second exhaust valve at the second exhaust port, a second water outlet valve at the second water outlet, and a second water inlet valve at the second water inlet.
5. The automatic vacuum drainage device for pulp molding as described in claim 4, characterized in that, The second vacuum valve is connected to the vacuum pipeline via the third pipeline, which is connected to the vacuum device. The second water inlet valve is connected to the water pumping pipeline via the fourth pipeline, which is connected to the pulp molding machine.
6. The automatic vacuum drainage device for pulp molding as described in claim 1, characterized in that, The baffle plate is annular, and its outer wall is fixedly connected to the inner wall of the slurry treatment tank. A first mounting hole is provided in the middle of the baffle plate, and the filter barrel is inserted into the first mounting hole. An annular groove is provided on the top surface of the baffle plate around the first mounting hole. An annular wing plate is provided on the outer wall of the top of the filter barrel, and the annular groove cooperates with the wing plate.
7. The automatic vacuum drainage device for pulp molding as described in claim 6, characterized in that, A handle is provided on the inner wall of the top of the filter bucket, and a first through hole is provided in the middle of the top surface of the slurry treatment tank. The handle is inserted into the first through hole, and the diameter of the first through hole is larger than the outer diameter of the filter bucket.
8. The automatic vacuum drainage device for pulp molding as described in claim 6, characterized in that, The discharge port is equipped with a discharge valve, and the drainage device includes a drainage pump. The discharge valve is connected to the inlet end of the drainage pump through a pipe, and the outlet end of the drainage pump is connected to the drainage pipe.
9. The automatic vacuum drainage device for pulp molding as described in claim 1, characterized in that, Each of the two vacuum drain tanks has an observation window on its sidewall extending along the sidewall direction.
10. The automatic vacuum drainage device for pulp molding as described in claim 1, characterized in that, The level gauge includes a level tube, with a first connection port and a second connection port at the top and bottom of the level tube, respectively. A third connection port and a fourth connection port are provided on the side wall of the vacuum drain tank. The first connection port is connected to the third connection port, and the second connection port is connected to the fourth connection port. A float is provided inside the level tube, and the outer wall of the float is slidably connected to the inner wall of the level tube. A trigger sensor is provided at the top of the level tube, and the trigger sensor is electrically connected to the controller.