CN115652697B - High-pressure dewatering system for pulp suction forming and pulp suction forming equipment with system - Google Patents
High-pressure dewatering system for pulp suction forming and pulp suction forming equipment with system Download PDFInfo
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- CN115652697B CN115652697B CN202211330752.5A CN202211330752A CN115652697B CN 115652697 B CN115652697 B CN 115652697B CN 202211330752 A CN202211330752 A CN 202211330752A CN 115652697 B CN115652697 B CN 115652697B
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Abstract
The invention provides a pulp-sucking forming high-pressure dehydration system and pulp-sucking forming equipment with the same, wherein the pulp-sucking forming high-pressure dehydration system comprises a pulp-sucking forming lower die, a pulp-sucking forming upper die, a vacuumizing mechanism, a drainage assembly and an air blowing mechanism, and the pulp-sucking forming lower die is provided with a lower die through hole; the upper mould for pulp suction forming is provided with an upper mould through hole, and the lower end of the upper mould through hole is communicated with the upper end of the lower mould through hole; the vacuum-pumping mechanism comprises a vacuum-pumping device, a lower vacuum-pumping pipeline and a lower vacuum-pumping valve, one end of the lower vacuum-pumping pipeline is connected with the vacuum-pumping device, the other end of the lower vacuum-pumping pipeline is connected with the lower end of the lower die through hole, and the lower vacuum-pumping valve is arranged on the lower vacuum-pumping pipeline; the drainage component is connected with the lower end of the lower die through hole; the air blowing mechanism comprises an air supply assembly, a first upper air blowing pipeline and a first upper air blowing valve, and one end of the first upper air blowing pipeline is connected with the air supply assembly. The invention can reduce the moisture content of the wet blank.
Description
Technical Field
The invention relates to the technical field of pulp molding, in particular to pulp suction molding equipment.
Background
The pulp molding technology is one kind of paper product producing technology and may be used widely in producing bowl, dish, cup cover, packing material, shock absorbing material, cushion material, etc. The product prepared by the pulp molding technology is easy to recycle, and accords with the energy-saving and carbon-reducing trend of environment-friendly recycling, so that the product is more and more valued by enterprises and consumers. The pulp molding technology is that pulp is sucked by a pulp suction mould and the pulp is taken as raw material, so as to obtain wet blank, and then the wet blank is dehydrated by cold pressing and hot pressing or directly hot pressing, so as to obtain the initial paper product. In the current pulp-sucking molding equipment, the water content of a wet blank obtained by pulp sucking through a pulp sucking mold is generally between 70% and 75% due to a simple vacuum water pumping mode, and the following problems exist: firstly, the water content is higher, so that the heat energy consumption is higher and the cost is higher when the wet blank is subjected to hot press shaping in the follow-up process; secondly, the water content is up to 70% -75%, and a large amount of dehydration is needed for wet blanks in cold pressing or hot pressing, so that the pulp products have large shrinkage degree and high rejection rate.
Accordingly, there is a need for a suction forming high-pressure dewatering system capable of reducing the moisture content of wet billets and a suction forming apparatus having the same.
Disclosure of Invention
The first object of the present invention is to provide a slurry suction forming high-pressure dewatering system capable of reducing the water content of wet billets.
The second object of the present invention is to provide a slurry suction molding apparatus capable of reducing the water content of wet blanks.
In order to achieve the first object, the invention provides a slurry suction forming high-pressure dewatering system, which comprises a slurry suction forming lower die, a slurry suction forming upper die, a vacuumizing mechanism, a drainage assembly and a blowing mechanism, wherein the slurry suction forming lower die is provided with a lower die through hole; the slurry sucking forming upper die is provided with an upper die through hole, and the lower end of the upper die through hole is communicated with the upper end of the lower die through hole; the vacuum-pumping mechanism comprises a vacuum-pumping device, a lower vacuum-pumping pipeline and a lower vacuum-pumping valve, wherein one end of the lower vacuum-pumping pipeline is connected with the vacuum-pumping device, the other end of the lower vacuum-pumping pipeline is connected with the lower end of the lower die through hole, the vacuum-pumping device can vacuumize the lower die through hole through the lower vacuum-pumping pipeline, and the lower vacuum-pumping valve is arranged on the lower vacuum-pumping pipeline and used for controlling the lower vacuum-pumping pipeline to be opened or closed; the drainage assembly is connected with the lower end of the lower die through hole and is used for draining water; the air blowing mechanism comprises an air supply assembly, a first upper air blowing pipeline and a first upper air blowing valve, one end of the first upper air blowing pipeline is connected with the air supply assembly, the other end of the first upper air blowing pipeline is connected with the upper end of the upper die through hole, the first upper air blowing valve is arranged on the first upper air blowing pipeline, and the first upper air blowing valve is used for controlling the first upper air blowing pipeline to be opened or closed; and the air supply assembly blows air to the upper die through hole through the first upper blowing pipeline, so that moisture in a wet blank between the pulp suction forming lower die and the pulp suction forming upper die is discharged into the drainage assembly through the lower die through hole.
Compared with the prior art, the high-pressure dehydration system for pulp suction molding can open the drainage component in a wet blank formed by closing the lower pulp suction molding die and the upper pulp suction molding die, and open the first upper air blowing pipeline through the first upper air blowing valve, and the air supply component blows air to the upper die through hole through the first upper air blowing pipeline, so that moisture in the wet blank between the lower pulp suction molding die and the upper pulp suction molding die is discharged into the drainage component through the lower die through hole, so as to dehydrate the wet blank, and the purpose of reducing the moisture content of the wet blank is achieved. Therefore, the high-pressure dewatering system for pulp suction molding can reduce the water content of wet blanks, is beneficial to reducing subsequent heat energy consumption, and avoids the problem of large shrinkage degree of pulp products when the wet blanks are dehydrated in a large quantity, thereby providing the yield of the pulp products.
Preferably, the lower die through hole comprises a lower die hole, a lower die cavity and a lower die notch which are communicated from top to bottom; the upper die through hole comprises an upper die notch, an upper die hole and an upper die cavity which are communicated from top to bottom.
Preferably, the drainage assembly comprises a first drainage pipeline, a buffer tank, a second drainage pipeline, a first drainage valve and a second drainage valve, one end of the first drainage pipeline is connected with the lower end of the lower die through hole, the other end of the first drainage pipeline is connected with the buffer tank, the buffer tank is used for storing water for drainage, one end of the second drainage pipeline is connected with the buffer tank, the first drainage valve is arranged on the first drainage pipeline and used for controlling the first drainage pipeline to be opened or closed, and the second drainage valve is arranged on the second drainage pipeline and used for controlling the second drainage pipeline to be opened or closed.
Preferably, the upper die emptying assembly further comprises an upper emptying pipeline and an upper emptying valve, one end of the upper emptying pipeline is connected with the upper end of the upper die through hole, the other end of the upper emptying pipeline is communicated with the outside, and the upper emptying valve is arranged on the upper emptying pipeline and used for controlling the opening or closing of the upper emptying pipeline; the other end of the second drainage pipeline is connected with the vacuumizing device.
Preferably, the vacuum pumping mechanism further comprises an upper vacuum pumping pipeline and an upper vacuum pumping valve, one end of the upper vacuum pumping pipeline is connected with the vacuum pumping device, the other end of the upper vacuum pumping pipeline is connected with the upper end of the upper die through hole, the upper vacuum pumping valve is arranged on the upper vacuum pumping pipeline and used for controlling the upper vacuum pumping pipeline to be opened or closed, and the vacuum pumping device can vacuumize the upper die through hole through the upper vacuum pumping pipeline.
Preferably, the blowing mechanism further comprises a first lower blowing pipeline and a first lower blowing valve, one end of the first lower blowing pipeline is connected with the air supply assembly, the other end of the first lower blowing pipeline is connected with the lower end of the lower die through hole, the first lower blowing valve is arranged on the first lower blowing pipeline, the first lower blowing valve is used for controlling the first lower blowing pipeline to be opened or closed, and the air supply assembly can blow air through the first lower blowing pipeline to the lower die through hole.
Preferably, the air supply assembly comprises an air source and a high-pressure air branch used for providing high-pressure air, the air source is connected with the high-pressure air branch, and the first upper air blowing pipeline and the first lower air blowing pipeline are respectively connected with the high-pressure air branch.
Preferably, the gas supply assembly further comprises a low pressure gas branch for providing low pressure gas, and the gas source is connected with the low pressure gas branch; the air blowing mechanism further comprises a second upper air blowing pipeline, a second upper air blowing valve, a second lower air blowing pipeline and a second lower air blowing valve, one end of the second upper air blowing pipeline is connected with the low-pressure air branch, the other end of the second upper air blowing pipeline is connected with the upper end of the upper die through hole, and the second upper air blowing valve is arranged on the second upper air blowing pipeline and used for controlling the second upper air blowing pipeline to be opened or closed; one end of the second lower blowing pipeline is connected with the low-pressure gas branch, the other end of the second lower blowing pipeline is connected with the lower end of the lower die through hole, and the second lower blowing valve is arranged on the second lower blowing pipeline and used for controlling the opening or closing of the second lower blowing pipeline.
In order to achieve the second purpose, the invention provides pulp sucking forming equipment which comprises a frame, a pulp tank, a lifting driving mechanism and the pulp sucking forming high-pressure dewatering system, wherein the pulp tank is arranged on the frame and is used for storing and discharging pulp; the lifting driving mechanism is arranged on the frame and connected with the pulp suction forming lower die, and can drive the pulp suction forming lower die to lift so as to enable the pulp suction forming lower die to be separated from or enter the pulp pool; the slurry sucking forming upper die is arranged on the frame and is positioned above the slurry sucking forming lower die; the vacuumizing device and the air supply assembly are respectively arranged on the frame.
Compared with the prior art, the pulp suction forming equipment is provided with the pulp suction forming high-pressure dehydration system, the pulp suction forming high-pressure dehydration system can open the drainage assembly in a wet blank formed by closing the pulp suction forming lower die and the pulp suction forming upper die, the first upper blowing pipeline is opened through the first upper blowing valve, and the air supply assembly blows air to the upper die through hole through the first upper blowing pipeline, so that moisture in the wet blank between the pulp suction forming lower die and the pulp suction forming upper die is discharged into the drainage assembly through the lower die through hole, and the purpose of reducing the moisture content of the wet blank is achieved by dehydrating the wet blank. Therefore, the pulp sucking and forming equipment can reduce the water content of the wet blank, is beneficial to reducing the subsequent heat energy consumption, and avoids the problem of large shrinkage degree of pulp products when the wet blank is dehydrated in a large quantity, thereby providing the yield of the pulp products.
Preferably, a first wave discharging baffle and a second wave discharging baffle arranged above the first wave discharging baffle are arranged on the inner wall of the slurry tank, a first wave discharging opening is arranged on the first wave discharging baffle, and a second wave discharging opening which is staggered with the first wave discharging opening is arranged on the second wave discharging baffle.
Drawings
Fig. 1 is a perspective view of a pulp-suction molding apparatus of the present invention.
Fig. 2 is a block diagram of the slurry suction forming high pressure dewatering system of the present invention.
Fig. 3 is a structural diagram of the suction forming lower die and the suction forming upper die of the present invention after being clamped.
Fig. 4 is an enlarged view at a in fig. 3.
Fig. 5 is a perspective view of a construction of the slurry tank of the present invention.
Detailed Description
In order to describe the technical content and constructional features of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 4, a pulp-forming apparatus 200 of the present invention includes a frame 201, a pulp tank 202, a lifting driving mechanism 203, and a pulp-forming high-pressure dewatering system 100. The pulp suction forming high-pressure dehydration system 100 comprises a pulp suction forming lower die 1, a pulp suction forming upper die 2, a vacuumizing mechanism, a drainage assembly 5 and an air blowing mechanism, wherein the pulp suction forming lower die 1 is provided with a lower die through hole; the slurry sucking forming upper die 2 is provided with an upper die through hole, and the lower end of the upper die through hole is communicated with the upper end of the lower die through hole; the vacuum-pumping mechanism comprises a vacuum-pumping device 31, a lower vacuum-pumping pipeline 32 and a lower vacuum-pumping valve 33, wherein one end of the lower vacuum-pumping pipeline 32 is connected with the vacuum-pumping device 31, the other end of the lower vacuum-pumping pipeline 32 is connected with the lower end of the lower die through hole, the vacuum-pumping device 31 can pump vacuum to the lower die through hole through the lower vacuum-pumping pipeline 32, and the lower vacuum-pumping valve 33 is arranged on the lower vacuum-pumping pipeline 32 and is used for controlling the lower vacuum-pumping pipeline 32 to be opened or closed; the drainage assembly 5 is connected with the lower end of the lower die through hole, the drainage assembly 5 is used for draining water, and the drainage assembly 5 is specifically used for draining water of the return pipeline; the air blowing mechanism comprises an air supply assembly 61, a first upper air blowing pipeline 62 and a first upper air blowing valve 63, one end of the first upper air blowing pipeline 62 is connected with the air supply assembly 61, the other end of the first upper air blowing pipeline 62 is connected with the upper end of the upper die through hole, the first upper air blowing valve 63 is arranged on the first upper air blowing pipeline 62, and the first upper air blowing valve 63 is used for controlling the first upper air blowing pipeline 62 to be opened or closed; the air supply assembly 61 blows air to the upper die through holes through the first upper blowing pipeline 62, so that moisture in the wet blank between the pulp suction forming lower die 1 and the pulp suction forming upper die 2 is discharged into the drainage assembly 5 through the lower die through holes.
The slurry tank 202 is arranged on the frame 201, and the slurry tank 202 is used for storing slurry; the lifting driving mechanism 203 is arranged on the frame 201, the lifting driving mechanism 203 is connected with the pulp suction forming lower die 1, and the lifting driving mechanism 203 can drive the pulp suction forming lower die 1 to lift so as to enable the pulp suction forming lower die 1 to be separated from or enter the pulp tank 202; the upper pulp sucking forming die 2 is arranged on the frame 201 and is positioned above the lower pulp sucking forming die 1; the vacuum-pumping device 31 and the air supply assembly 61 are respectively provided on the frame 201. Specifically, after the lifting driving mechanism 203 drives the lower suction forming die 1 to lift off the slurry tank 202, the lifting driving mechanism 203 can drive the lower suction forming die 1 to lift continuously and to perform pressurizing die assembly with the upper suction forming die 2.
In the wet blank formed by closing the upper die 2 and the lower die 1 for pulp suction molding, the drainage assembly 5 is opened, the first upper blowing pipeline 62 is opened through the first upper blowing valve 63, and the air supply assembly 61 blows air to the upper die through holes through the first upper blowing pipeline 62, so that the moisture in the wet blank between the upper die 2 and the lower die 1 for pulp suction molding is discharged into the drainage assembly 5 through the lower die through holes, so as to dehydrate the wet blank, and the purpose of reducing the moisture content of the wet blank is achieved.
Referring to fig. 4, in the present embodiment, the lower mold through hole includes a lower mold hole 111, a lower mold cavity 112 and a lower mold slot 113, which are communicated from top to bottom; the upper die through hole comprises an upper die slot 211, an upper die hole 212 and an upper die cavity 213 which are communicated from top to bottom. Specifically, the upper part of the lower mold notch 113 is communicated with a plurality of lower mold cavities 112, and the upper part of the lower mold cavity 112 is communicated with a plurality of lower mold holes 111; the upper part of the upper mold cavity 213 is communicated with a plurality of upper mold holes 212, and the upper part of the upper mold holes 212 is communicated with an upper mold slot 211; an upper mold cavity 213 is correspondingly arranged above each lower mold cavity 112, and the lower mold holes 111 and the upper mold holes 212 are in one-to-one correspondence, so that water drops are prevented from being detained in the forming slurry suction process.
Referring to fig. 2, in the present embodiment, the drain assembly 5 includes a first drain pipe 51, a buffer tank 52, a second drain pipe 53, a first drain valve 54 and a second drain valve 55, one end of the first drain pipe 51 is connected to the lower end of the lower mold through hole, the other end of the first drain pipe 51 is connected to the buffer tank 52, the buffer tank 52 is used for storing water for draining, one end of the second drain pipe 53 is connected to the buffer tank 52, the first drain valve 54 is disposed on the first drain pipe 51 and is used for controlling the first drain pipe 51 to be opened or closed, and the second drain valve 55 is disposed on the second drain pipe 53 and is used for controlling the second drain pipe 53 to be opened or closed. When the first upper blowing valve 63 opens the first upper blowing pipe 62, the air supply assembly 61 blows air to the upper die through hole through the first upper blowing pipe 62, and simultaneously, opens the first drain pipe 51 through the first drain valve 54 and opens the second drain pipe 53 through the second drain valve 55, the second drain pipe 53 being in communication with the atmospheric pressure, so that moisture in the wet blank located between the suction forming lower die 1 and the suction forming upper die 2 flows into the first drain pipe 51 through the lower die through hole and then flows into the cache tank 52 from the first drain pipe 51. Further, the slurry suction forming high pressure dewatering system 100 of the present invention further comprises an upper mold evacuation assembly 7, the upper mold evacuation assembly 7 comprises an upper evacuation pipe 71 and an upper evacuation valve 72, one end of the upper evacuation pipe 71 is connected to the upper end of the upper mold through hole, the other end of the upper evacuation pipe 71 is communicated with the outside, and the upper evacuation valve 72 is disposed on the upper evacuation pipe 71 and is used for controlling the opening or closing of the upper evacuation pipe 71. After the air supply assembly 61 blows air to the upper mold through hole through the first upper air blowing pipe 62 so that moisture in the wet blank is continuously discharged through the lower mold through hole, the first upper air blowing pipe 62 is closed through the first upper air blowing valve 63, thereby stopping blowing air to the upper mold through hole, the upper air exhausting pipe 71 is opened through the upper air exhausting valve 72, the lower air exhausting pipe 32 is opened through the lower air exhausting valve 33, and the air exhausting device 31 performs vacuum exhausting through the air exhausting pipe 32, thereby exhausting moisture remained in the pipe. In a preferred embodiment, a connection line 41 and a connection control valve 42 for controlling the opening or closing of the connection line 41 are further provided between the buffer tank 52 and the lower vacuum line 32. In one embodiment, after the air supply assembly 61 blows air through the first upper blowing pipe 62 to the upper mold through hole, so that moisture in the wet blank is continuously discharged through the lower mold through hole, the first upper blowing pipe 62 is closed by the first upper blowing valve 63, thus stopping blowing air to the upper mold through hole, the upper drain pipe 71 is opened by the upper drain valve 72, the first drain pipe 51 is closed by the first drain valve 54 of the drain assembly 5, the second drain valve 55 is continuously opened by the second drain pipe 53, the connecting pipe 41 is opened by the connection control valve 42, the lower vacuumizing pipe 32 is opened by the lower vacuumizing valve 33, and the vacuumizing device 31 performs vacuumizing through the vacuumizing pipe 32, thereby vacuumizing moisture remaining in the pipes and moisture in the buffer tank 52. Furthermore, a large water storage tank can be further arranged between the vacuumizing device 31 and the vacuumizing pipeline 32, and the vacuumizing device 31 can suck water into the large water storage tank so as to facilitate the subsequent recycling of the water in the large water storage tank.
With continued reference to fig. 2, the vacuum-pumping mechanism further includes an upper vacuum-pumping pipeline 34 and an upper vacuum-pumping valve 35, one end of the upper vacuum-pumping pipeline 34 is connected with the vacuum-pumping device 31, the other end of the upper vacuum-pumping pipeline 34 is connected with the upper end of the upper mold through hole, the upper vacuum-pumping valve 35 is disposed on the upper vacuum-pumping pipeline 34 and is used for controlling the upper vacuum-pumping pipeline 34 to be opened or closed, and the vacuum-pumping device 31 can vacuum the upper mold through hole through the upper vacuum-pumping pipeline 34. After the pipe moisture separation is completed, the upper evacuation pipe 71 is closed by the upper evacuation valve 72, the first drain pipe 51 is closed by the first drain valve 54, the second drain pipe 53 is closed by the second drain valve 55, the connection pipe 41 is closed by the connection control valve 42, the lower evacuation pipe 32 is closed by the lower evacuation valve 33, the upper evacuation pipe 34 is opened by the upper evacuation valve 35, and the evacuation device 31 evacuates the upper mold through-holes by the upper evacuation pipe 34, thereby adsorbing the wet blank on the slurry suction molding upper mold 2. Further, the air blowing mechanism further includes a first lower air blowing pipeline 64 and a first lower air blowing valve 65, one end of the first lower air blowing pipeline 64 is connected with the air supply assembly 61, the other end of the first lower air blowing pipeline 64 is connected with the lower end of the lower mold through hole, the first lower air blowing valve 65 is arranged on the first lower air blowing pipeline 64, the first lower air blowing valve 65 is used for controlling the opening or closing of the first lower air blowing pipeline 64, and the air supply assembly 61 can blow air to the lower mold through hole through the first lower air blowing pipeline 64. In the demolding process of the pulp suction forming lower die 1 and the pulp suction forming upper die 2, the first lower air blowing pipeline 64 is opened through the first lower air blowing valve 65, so that the air supply assembly 61 blows air to the lower die through holes through the first lower air blowing pipeline 64, and the wet blank is blown to the pulp suction forming upper die 2, so that the wet blank can be ensured to stay on the pulp suction forming upper die 2 stably. In the demolding process of the lower suction forming die 1 and the upper suction forming die 2, a displacement sensor can be set to sense whether the lower suction forming die 1 and the upper suction forming die 2 are demolded, and when the displacement sensor senses that the lower suction forming die 1 and the upper suction forming die 2 are demolded, the first lower air blowing valve 65 is opened. In another embodiment, moisture in the wet blank is discharged to the buffer tank 52 through the lower mold through hole after the air supply assembly 61 blows the upper mold through hole through the first upper blowing pipe 62, and moisture remaining in the pipe and moisture in the buffer tank 52 are removed by closing the first lower blowing pipe 64 through the first lower blowing valve 65, closing the second drain pipe 53 through the second drain valve 55 of the drain assembly 5, opening the first drain pipe 51 through the first drain valve 54, opening the connection pipe 41 through the connection control valve 42, opening the lower vacuumizing pipe 32 through the lower vacuumizing valve 33, and vacuumizing the vacuumizing device 31 through the vacuumizing pipe 32 after the suction forming lower mold 1 is released from the suction forming upper mold 2.
With continued reference to fig. 2, the air supply assembly 61 includes an air source 611 and a high-pressure air branch 612 for providing high-pressure air, the air source 611 is connected to the high-pressure air branch 612, and the first upper air blowing pipeline 62 and the first lower air blowing pipeline 64 are respectively connected to the high-pressure air branch 612. Wherein a high pressure gas tank and a pressure reducing valve for controlling the pressure can be provided on the high pressure gas branch 612. Further, the gas supply assembly 61 further comprises a low pressure gas branch 613 for providing low pressure gas, and the gas source 611 is connected to the low pressure gas branch 613, wherein a low pressure gas tank and a pressure reducing valve for controlling the pressure may be provided on the low pressure gas branch 613. Specifically, the air source 611 may be connected to the high pressure air branch 612 and the low pressure air branch 613 through a total air path, where a butterfly valve may be disposed on the total air path, so as to facilitate maintenance. The air blowing mechanism further comprises a second upper air blowing pipeline 66, a second upper air blowing valve 67, a second lower air blowing pipeline 68 and a second lower air blowing valve 69, one end of the second upper air blowing pipeline 66 is connected with the low-pressure air branch 613, the other end of the second upper air blowing pipeline 66 is connected with the upper end of the upper die through hole, and the second upper air blowing valve 67 is arranged on the second upper air blowing pipeline 66 and is used for controlling the second upper air blowing pipeline 66 to be opened or closed; one end of the second lower blowing pipeline 68 is connected with the low-pressure gas branch 613, the other end of the second lower blowing pipeline 68 is connected with the lower end of the lower die through hole, and a second lower blowing valve 69 is arranged on the second lower blowing pipeline 68 and used for controlling the opening or closing of the second lower blowing pipeline 68. Specifically, butterfly valves are provided on both the first upper blow line 62 and the second upper blow line 66 for ease of maintenance.
When the lifting driving mechanism 203 drives the pulp sucking and forming lower die 1 to descend into the pulp tank 202, the second lower air blowing pipeline 68 can be opened through the second lower air blowing valve 69, low-pressure air is provided for the second lower air blowing pipeline 68 through the low-pressure air branch 613 of the air supply assembly 61, so that pulp in the pulp tank 202 is blown through the lower die through hole of the pulp sucking and forming lower die 1, the pulp is uniform, then the second lower air blowing pipeline 68 is closed through the second lower air blowing valve 69, the lower vacuumizing pipeline 32 is opened through the lower vacuumizing valve 33, the vacuumizing device 31 vacuumizes through the lower vacuumizing pipeline 32, and the pulp is sucked through the lower die through hole by the pulp sucking and forming lower die 1. After the pulp sucking forming lower die 1 and the pulp sucking forming upper die 2 are demolded, when the wet blank on the pulp sucking forming upper die 2 needs to be transferred, the second upper air blowing pipeline 66 can be opened through the second upper air blowing valve 67, so that the low-pressure air branch 613 of the air supply assembly 61 supplies low-pressure air to the second upper air blowing pipeline 66, and the wet blank is convenient to separate from the pulp sucking forming upper die 2.
Referring to fig. 1 and 5, in the present embodiment, a first wave discharging baffle 202a and a second wave discharging baffle 202b located above the first wave discharging baffle 202a are disposed on the inner wall of the slurry tank 202, a first wave discharging opening 202a1 is disposed on the first wave discharging baffle 202a, and a second wave discharging opening 202b1 which is staggered with the first wave discharging opening 202a1 is disposed on the second wave discharging baffle 202 b. By staggering the first wave discharging openings 202a1 and the second wave discharging openings 202b1, the impact force of the slurry overflowing around the slurry tank 202 can be attenuated and the slurry is prevented from overflowing the slurry tank 202 after the slurry sucking and forming lower die 1 descends and sinks into the slurry tank 202.
Referring to fig. 2, in the present embodiment, for the lower suction forming die 1, the lower vacuumizing line 32 and the second lower blowing line 68 may be first summarized into a lower total line, and then connected to the lower die through hole of the lower suction forming die 1 through the lower total line, and the first lower blowing line 64 and the first draining line 51 are also respectively connected to the lower total line, so as to be connected to the lower die through hole of the lower suction forming die 1 through the lower total line. And the lower header line is in communication with the lower die slot 113 of the suction forming lower die 1, specifically by passing through the bottom of the slurry tank 202. However, in other embodiments, for example, the lower vacuumizing line 32, the second lower blowing line 68, the first lower blowing line 64 and the first draining line 51 may be connected to the lower mold through hole of the lower suction forming mold 1 independently, or all the lines may be integrated into one line to be connected to the lower mold through hole of the lower suction forming mold 1. More specifically, butterfly valves are provided on both the lower main line and the first lower blow line 64 for ease of maintenance.
With continued reference to fig. 2, in this embodiment, for the upper suction forming die 2, the upper vacuumizing line 34, the first upper blowing line 62, the second upper blowing line 66 and the upper emptying line 71 may be first summarized into an upper total line, and then connected to the upper end of the upper die through hole of the upper suction forming die 2 through the upper total line. Specifically, the upper manifold is connected to the upper die slot 211 of the upper die through hole. However, it is not limited thereto, and in other embodiments, for example, the upper vacuumizing line 34, the first upper air blowing line 62, the second upper air blowing line 66 and the upper evacuating line 71 may be independently connected to the upper mold through holes of the upper suction forming mold 2.
Referring to fig. 1 to 5, the specific operation principle of the pulp-suction forming apparatus 200 of the present invention is as follows:
the lifting driving mechanism 203 drives the pulp suction forming lower die 1 to descend into the pulp tank 202, the second lower air blowing pipeline 68 is opened through the second lower air blowing valve 69, low-pressure air is supplied to the second lower air blowing pipeline 68 through the low-pressure air branch 613 of the air supply assembly 61, so that pulp in the pulp tank 202 is blown through the lower die through hole of the pulp suction forming lower die 1, the pulp is uniform, then the second lower air blowing pipeline 68 is closed through the second lower air blowing valve 69, the lower vacuumizing pipeline 32 is opened through the lower vacuumizing valve 33, the vacuumizing device 31 vacuumizes through the lower vacuumizing pipeline 32, and the pulp suction forming lower die 1 performs pulp suction on the pulp through the lower die through hole. Then, the lifting driving mechanism 203 drives the lower suction forming die 1 to rise to a position not higher than the slurry tank 202, the wet blank on the upper suction forming die 2 is waited to be transferred away, and when the wet blank on the upper suction forming die 2 is transferred, the second upper air blowing pipeline 66 can be opened through the second upper air blowing valve 67, so that the low-pressure air branch 613 of the air supply assembly 61 supplies low-pressure air to the second upper air blowing pipeline 66, and the wet blank is separated from the upper suction forming die 2. Then, the lifting driving mechanism 203 drives the pulp-sucking forming lower die 1 to continuously lift, so that the pulp-sucking forming lower die 1 and the pulp-sucking forming upper die 2 are pressurized and matched. After the mold is closed, the lower vacuumizing pipeline 32 is closed through the lower vacuumizing valve 33, the first drainage pipeline 51 is opened through the first drainage valve 54, the second drainage pipeline 53 is opened through the second drainage valve 55, meanwhile, when the first upper air blowing valve 63 is opened, the air supply assembly 61 blows air to the upper mold through holes through the first upper air blowing pipeline 62, so that moisture in wet blanks between the pulp suction molding lower mold 1 and the pulp suction molding upper mold 2 flows into the first drainage pipeline 51 through the lower mold through holes, flows into the cache tank 52 from the first drainage pipeline 51, and the second drainage pipeline 53 is communicated with the atmospheric pressure. After the continuous dehydration is completed, if the water in the buffer tank 52 is processed in the previous stage, the first upper air blowing pipeline 62 is closed through the first upper air blowing valve 63, so that the air blowing to the upper die through hole is stopped, the upper air exhausting pipeline 71 is opened through the upper air exhausting valve 72, the first water exhausting pipeline 51 is closed through the first water exhausting valve 54 of the water exhausting assembly 5, the second water exhausting pipeline 53 is continuously opened through the second water exhausting valve 55, the connecting pipeline 41 is opened through the connecting control valve 42, the lower vacuum exhausting pipeline 32 is opened through the lower vacuum exhausting valve 33, and the vacuum exhausting device 31 is vacuumized through the vacuum exhausting pipeline 32, so that the water remained in the pipeline and the water in the buffer tank 52 are pumped away. After the water separation of the pipeline is completed, the upper emptying pipeline 71 is closed through the upper emptying valve 72, the first drainage pipeline 51 is closed through the first drainage valve 54, the connecting pipeline 41 is closed through the connecting control valve 42, the lower vacuumizing pipeline 32 is closed through the lower vacuumizing valve 33, the upper vacuumizing pipeline 34 is opened through the upper vacuumizing valve 35, the vacuumizing device 31 vacuumizes the upper mould through holes through the upper vacuumizing pipeline 34, so that wet blanks are adsorbed on the upper pulp sucking forming mould 2, and when the lower pulp sucking forming mould 1 and the upper pulp sucking forming mould 2 are in the demoulding process, the displacement sensor senses that the lower pulp sucking forming mould 1 and the upper pulp sucking forming mould 2 are in the demoulding process, the first lower air blowing pipeline 64 is opened through the first lower air blowing valve 65, so that the air supply assembly 61 blows the wet blanks to the upper pulp sucking forming mould 2 through the first lower air blowing pipeline 64, and the wet blanks can be stably stopped on the upper pulp sucking forming mould 2. If the water in the buffer tank 52 is treated later, after the lower suction forming die 1 and the upper suction forming die 2 are released and the wet blank is blown to the upper suction forming die 2 through the lower die through hole, the first lower air blowing pipe 64 is closed by the first lower air blowing valve 65, the second water discharging pipe 53 is closed by the second water discharging valve 55 of the water discharging assembly 5, the first water discharging pipe 51 is opened by the first water discharging valve 54, the connecting pipe 41 is opened by the connecting control valve 42, the lower vacuum pumping pipe 32 is opened by the lower vacuum pumping valve 33, and the vacuum pumping device 31 pumps the vacuum through the vacuum pumping pipe 32, thereby pumping the water retained in the pipes and the water in the buffer tank 52. And so on. Wherein one skilled in the art may select one or both of the moisture in the pre-treatment cache tank 52 and the moisture in the post-treatment cache tank 52 as desired.
In summary, the pulp sucking and forming device 200 of the present invention can reduce the moisture content of the wet blank, ensure that the moisture content of the wet blank is as low as about 62%, facilitate reducing subsequent heat energy consumption, and avoid the problem of large shrinkage degree of the pulp product when the wet blank is dehydrated in a large amount, thereby providing the yield of the pulp product.
The foregoing disclosure is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (9)
1. A suction forming high pressure dewatering system, comprising:
a lower pulp sucking forming die which is provided with a lower die through hole;
the upper die is provided with an upper die through hole, and the lower end of the upper die through hole is communicated with the upper end of the lower die through hole;
the vacuum-pumping mechanism comprises a vacuum-pumping device, a lower vacuum-pumping pipeline and a lower vacuum-pumping valve, one end of the lower vacuum-pumping pipeline is connected with the vacuum-pumping device, the other end of the lower vacuum-pumping pipeline is connected with the lower end of the lower die through hole, the vacuum-pumping device can vacuumize the lower die through hole through the lower vacuum-pumping pipeline, and the lower vacuum-pumping valve is arranged on the lower vacuum-pumping pipeline and used for controlling the lower vacuum-pumping pipeline to be opened or closed;
the drainage assembly is connected with the lower end of the lower die through hole and is used for draining water; the drainage assembly comprises a first drainage pipeline, a buffer tank, a second drainage pipeline, a first drainage valve and a second drainage valve, wherein one end of the first drainage pipeline is connected with the lower end of the lower die through hole, the other end of the first drainage pipeline is connected with the buffer tank, the buffer tank is used for storing water of drainage, one end of the second drainage pipeline is connected with the buffer tank, the first drainage valve is arranged on the first drainage pipeline and used for controlling the first drainage pipeline to be opened or closed, and the second drainage valve is arranged on the second drainage pipeline and used for controlling the second drainage pipeline to be opened or closed;
the air blowing mechanism comprises an air supply assembly, a first upper air blowing pipeline and a first upper air blowing valve, one end of the first upper air blowing pipeline is connected with the air supply assembly, the other end of the first upper air blowing pipeline is connected with the upper end of the upper die through hole, the first upper air blowing valve is arranged on the first upper air blowing pipeline, and the first upper air blowing valve is used for controlling the first upper air blowing pipeline to be opened or closed; and the air supply assembly blows air to the upper die through hole through the first upper blowing pipeline, so that moisture in a wet blank between the pulp suction forming lower die and the pulp suction forming upper die is discharged into the drainage assembly through the lower die through hole.
2. The pulp-sucking molding high-pressure dewatering system of claim 1, wherein the lower die through hole comprises a lower die hole, a lower die cavity and a lower die notch which are communicated from top to bottom; the upper die through hole comprises an upper die notch, an upper die hole and an upper die cavity which are communicated from top to bottom.
3. The pulp-sucking molded high-pressure dewatering system according to claim 1, further comprising an upper die emptying assembly, wherein the upper die emptying assembly comprises an upper emptying pipeline and an upper emptying valve, one end of the upper emptying pipeline is connected with the upper end of the upper die through hole, the other end of the upper emptying pipeline is communicated with the outside, and the upper emptying valve is arranged on the upper emptying pipeline and used for controlling the opening or closing of the upper emptying pipeline; the other end of the second drainage pipeline is connected with the vacuumizing device.
4. The pulp-sucking molding high-pressure dewatering system according to claim 1, wherein the vacuum-pumping mechanism further comprises an upper vacuum-pumping pipeline and an upper vacuum-pumping valve, one end of the upper vacuum-pumping pipeline is connected with the vacuum-pumping device, the other end of the upper vacuum-pumping pipeline is connected with the upper end of the upper mold through hole, the upper vacuum-pumping valve is arranged on the upper vacuum-pumping pipeline and used for controlling the upper vacuum-pumping pipeline to be opened or closed, and the vacuum-pumping device can vacuumize the upper mold through hole through the upper vacuum-pumping pipeline.
5. The pulp-sucking and forming high-pressure dewatering system according to claim 4, wherein the air-blowing mechanism further comprises a first lower air-blowing pipeline and a first lower air-blowing valve, one end of the first lower air-blowing pipeline is connected with the air supply assembly, the other end of the first lower air-blowing pipeline is connected with the lower end of the lower die through hole, the first lower air-blowing valve is arranged on the first lower air-blowing pipeline, the first lower air-blowing valve is used for controlling the opening or closing of the first lower air-blowing pipeline, and the air supply assembly can blow air to the lower die through hole through the first lower air-blowing pipeline.
6. The pulp-suction forming high-pressure dewatering system according to claim 5, wherein the air supply assembly comprises an air source and a high-pressure air branch for supplying high-pressure air, the air source is connected with the high-pressure air branch, and the first upper air-blowing pipeline and the first lower air-blowing pipeline are respectively connected with the high-pressure air branch.
7. The suction forming high pressure dewatering system of claim 6, wherein the gas supply assembly further includes a low pressure gas branch for providing a low pressure gas, the gas source being connected to the low pressure gas branch; the air blowing mechanism further comprises a second upper air blowing pipeline, a second upper air blowing valve, a second lower air blowing pipeline and a second lower air blowing valve, one end of the second upper air blowing pipeline is connected with the low-pressure air branch, the other end of the second upper air blowing pipeline is connected with the upper end of the upper die through hole, and the second upper air blowing valve is arranged on the second upper air blowing pipeline and used for controlling the second upper air blowing pipeline to be opened or closed; one end of the second lower blowing pipeline is connected with the low-pressure gas branch, the other end of the second lower blowing pipeline is connected with the lower end of the lower die through hole, and the second lower blowing valve is arranged on the second lower blowing pipeline and used for controlling the opening or closing of the second lower blowing pipeline.
8. A pulp sucking forming device, which is characterized by comprising a frame, a pulp tank, a lifting driving mechanism and the pulp sucking forming high-pressure dewatering system according to any one of claims 1 to 7, wherein the pulp tank is arranged on the frame and is used for storing and discharging pulp; the lifting driving mechanism is arranged on the frame and connected with the pulp suction forming lower die, and can drive the pulp suction forming lower die to lift so as to enable the pulp suction forming lower die to be separated from or enter the pulp pool; the slurry sucking forming upper die is arranged on the frame and is positioned above the slurry sucking forming lower die; the vacuumizing device and the air supply assembly are respectively arranged on the frame.
9. The pulp-absorbing forming device of claim 8, wherein a first wave-discharging baffle and a second wave-discharging baffle positioned above the first wave-discharging baffle are arranged on the inner wall of the pulp tank, a first wave-discharging opening is arranged on the first wave-discharging baffle, and a second wave-discharging opening which is staggered with the first wave-discharging opening is arranged on the second wave-discharging baffle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211330752.5A CN115652697B (en) | 2022-10-27 | 2022-10-27 | High-pressure dewatering system for pulp suction forming and pulp suction forming equipment with system |
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| CN202211330752.5A CN115652697B (en) | 2022-10-27 | 2022-10-27 | High-pressure dewatering system for pulp suction forming and pulp suction forming equipment with system |
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| CN117306317A (en) * | 2023-11-10 | 2023-12-29 | 广东瀚森智能装备有限公司 | Pulp sucking forming die mechanism |
| CN117403480A (en) * | 2023-11-29 | 2024-01-16 | 广东瀚森智能装备有限公司 | Hot-pressing die high-temperature dehydration mechanism and hot-pressing equipment with same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| BE1012914A3 (en) * | 1999-09-30 | 2001-05-08 | Vincent Lee | Automatic machine for moulding pulp and removing the moulded product |
| CN100373006C (en) * | 2003-06-27 | 2008-03-05 | 姜陆平 | Blank forming equipment for paper-mould production and forming process using the equipment |
| CN202359462U (en) * | 2011-12-08 | 2012-08-01 | 上海伊索热能技术有限公司 | Improved demoulding device suitable for wet vacuum adsorption-filtration moulding |
| CN105369695B (en) * | 2015-10-10 | 2017-11-07 | 上海英正辉环保设备有限公司 | A kind of Paper moulded copies the process and mould structure of base deep dehydration |
| CN112157784B (en) * | 2020-09-29 | 2022-02-11 | 林铭兰 | Grouting forming process and grouting device for closestool blank |
| CN113651098A (en) * | 2021-07-20 | 2021-11-16 | 东莞三润田智能科技有限公司 | Paper mould belt net transfer type production equipment |
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