Pulp molding system

Abstract

The invention relates to the technical field of paper pulp molding, and discloses a paper pulp molding system which comprises a steam system comprising a steam engine water supply tank and a steam engine, the steam engine water supply tank is provided with a first water supply port and a first water return port, the steam engine is provided with a first water inlet and a steam outlet, and the first water inlet is communicated with the first water supply port; the steam outlet is connected with a steam supply pipeline, and the steam supply pipeline is suitable for being communicated with each steam inlet of the steam mold; and the condensate water recovery system is provided with a condensate water recovery port, the condensate water recovery port is connected with a condensate water pipeline, and the condensate water pipeline is suitable for being communicated with each condensate water outlet of the steam mold. According to the steam engine water supply tank, water is provided for the steam engine through the first water supply port, the steam engine heats the water into steam, the steam flows to the steam supply pipeline through the steam outlet, the steam is provided for the steam mold through the steam supply pipeline, the steam flows in the steam mold to provide heat, and therefore a wet blank in the steam mold can be dried.

Description

Technical Field

[0001] The invention relates to the technical field of pulp molding, in particular to a pulp molding system. Background Art

[0002] Three-dimensional papermaking is pulp molding technology. Green materials such as bagasse, bamboo, and hardwood are used to make pulp, which is then three-dimensionally molded to form paper bags and tableware. Paper products made by three-dimensional papermaking can be degraded and are green and environmentally friendly products. In the production process of this product, there is a front-end factory system that provides pulp and equipment supporting energy, and a back-end pulp molding equipment that processes the pulp to form a wet embryo, which is then dried to form a finished product. In this manufacturing process, the energy consumed by drying accounts for a large proportion of the production cost. The drying methods include natural drying outside the mold, hot air drying, and hot pressing inside the mold. Hot pressing of the mold can produce products with smooth appearance. Traditional electric heating molds and thermal oil molds are expensive. The production cost of electric heating molds and thermal oil molds accounts for more than 35% of the total production cost. A steam mold has emerged in the related technology. The steam mold is efficient and energy-saving, safe and reliable, and has no risk of combustion due to leakage, simple maintenance, and low price. However, the traditional pulp molding system cannot adapt to the steam mold, and a new system is needed to match the steam mold. Summary of the invention

[0003] In view of this, the present invention provides a pulp molding system for providing steam to a steam mold.

[0004] The present invention provides a pulp molding system, comprising:

[0005] A steam system, comprising a steam engine water supply tank and a steam engine, wherein the steam engine water supply tank has a first water supply port and a first water return port, the steam engine has a first water inlet and a steam outlet, the first water inlet is connected to the first water supply port, the steam outlet is connected to a steam supply pipeline, and the steam supply pipeline is suitable for being connected to each steam inlet of the steam mold;

[0006] The condensate recovery system comprises a condensate recovery port, the condensate recovery port is connected with a condensate pipeline, and the condensate pipeline is suitable for being connected with each condensate outlet of the steam mold.

[0007] Beneficial effects: The steam engine water supply tank provides water to the steam engine through the first water supply port, and the steam engine heats the water into steam, which flows to the steam supply pipeline through the steam outlet. Since the steam supply pipeline is suitable for communicating with each steam inlet of the steam mold, steam is provided to the steam mold through the steam supply pipeline, and the steam flows in the steam mold to provide heat, thereby drying the wet embryo in the steam mold. After the steam flows through the steam mold, it flows out from the condensed water outlet, flows back to the condensed water recovery system through the condensed water pipeline, and can be reused.

[0008] In an optional embodiment, a first steam trap is provided at the junction of the steam supply pipeline and the condensate pipeline;

[0009] The condensate pipeline is suitable for being connected with each condensate outlet of the steam mold through a first connecting branch pipe, and the first connecting branch pipe is provided with a second steam trap.

[0010] Beneficial effects: By setting the first steam trap at the junction of the steam supply pipeline and the condensate pipeline, it is possible to ensure that the steam supply pipeline removes moisture and ensures that the steam in the steam supply pipeline is in a saturated steam state, which is conducive to rapid heat exchange of steam molds, hot pressing products, shortening hot pressing time, and increasing production capacity. By setting the second steam trap at each first connecting branch pipe, it is possible to ensure that the steam heat energy is fully utilized.

[0011] In an optional embodiment, the steam supply pipeline is located at a higher position than the condensate pipeline.

[0012] Beneficial effect: Since the steam supply pipeline is located higher than the condensate pipeline, it can further ensure that the steam supply pipeline removes moisture, ensuring that the steam in the steam supply pipeline is in a saturated steam state, which is beneficial to the rapid heat exchange of the steam mold, hot pressing products, shortening the hot pressing time and increasing production capacity.

[0013] In an optional embodiment, the steam engine water supply tank is provided with a first water return port, and the condensate recovery system is provided with a water outlet, and the water outlet is connected to the first water return port of the steam engine water supply tank.

[0014] Beneficial effect: Since the water outlet of the condensate recovery system is connected to the first return water outlet of the steam engine water supply tank, the steam flows through the steam mold, flows out from the condensate outlet, and flows back to the condensate recovery system through the condensate pipeline. The high-temperature condensate can enter the steam engine water supply tank again and then be heated by the steam engine to achieve secondary utilization of steam energy.

[0015] In an optional embodiment, the steam engine water supply tank is provided with a second water inlet, the second water inlet is connected to a water inlet pipeline, the water inlet pipeline is provided with a water inlet valve, a floating ball valve is provided in the steam engine water supply tank, and the pulp molding system also includes a controller, which is communicatively connected to the floating ball valve and the water inlet valve.

[0016] Beneficial effect: By setting a floating ball valve in the steam engine water supply tank, the liquid level in the steam engine water supply tank can be detected. When the floating ball valve is lower than the preset liquid level, the controller will control the water inlet valve to continue to intake water. When the ball valve is higher than the preset liquid level, the controller will control the water inlet valve to stop intake water, thereby ensuring that the steam will not run without water.

[0017] In an optional embodiment, the pulp molding system further includes a circulating pulp supply system, and the circulating pulp supply system includes:

[0018] pulper;

[0019] A stirring tank assembly is communicated with the pulper, and the stirring tank assembly is used for preparing finished slurry.

[0020] Beneficial effect: The raw material cardboard and water are mixed in the proportion required by the process, and put into the pulper to make high-concentration slurry. The high-concentration slurry enters the stirring tank assembly for stirring and dilution to prepare the finished slurry.

[0021] In an optional embodiment, the stirring tank assembly includes:

[0022] A first stirring tank is connected to the pulper via a first pulp supply pump;

[0023] The second stirring tank is connected to the first stirring tank through a second slurry supply pump. The second stirring tank is connected to a slurry outlet pipe, and the slurry outlet pipe is provided with a third slurry supply pump. The slurry outlet pipe is suitable for connecting to a pulp molding device.

[0024] Beneficial effect: The raw material cardboard and water are mixed in a proportion according to the process requirements, and put into a pulper to form a high-concentration slurry. The high-concentration slurry enters the first stirring tank through the first slurry supply pump. Water is added to the first stirring tank to dilute the high-concentration slurry to become a low-concentration slurry that meets the process requirements. The low-concentration slurry that meets the process requirements is supplied to the second stirring tank through the second slurry supply pump. Chemical materials that meet the process requirements are added to the second stirring tank to form a finished slurry, which is provided to the pulp molding equipment through the third slurry supply pump.

[0025] In an optional embodiment, the circulating slurry supply system further includes:

[0026] A buffer overflow tank, wherein the buffer overflow tank has a pulp return port and a pulp discharge port, the pulp return port is connected to the overflow port of the pulp molding equipment through a pulp return pipe, and the pulp discharge port is connected to the first stirring tank and / or the second stirring tank through a fourth pulp supply pump;

[0027] The slurry outlet pipe is communicated with the slurry return pipe, and a third stop valve is provided at the junction of the slurry outlet pipe and the slurry return pipe.

[0028] Beneficial effect: By setting up a buffer overflow tank, the slurry flowing out of the equipment overflow port of the pulp molding equipment flows into the buffer overflow tank through the return slurry pipe, and can enter the first stirring tank and / or the second stirring tank again for recycling through the fourth slurry supply pump. Since the slurry discharge pipe is connected to the return slurry pipe, and a third stop valve is provided at the junction of the slurry discharge pipe and the return slurry pipe, when the pulp molding equipment is not working, the slurry flowing out of the slurry discharge pipe can flow back to the buffer overflow tank through the return slurry pipe for circulation. Therefore, the shutdown of the pulp molding equipment does not affect the operation of the slurry supply circulation system.

[0029] In an optional embodiment, the caliber of the slurry outlet pipe is smaller than that of the slurry return pipe.

[0030] Beneficial effect: Since the diameter of the slurry outlet pipe is smaller than that of the slurry return pipe, it can be ensured that the slurry return pipe will not be filled.

[0031] In an optional embodiment, the pulp molding system further includes a vacuum system, a gas-liquid separator and a positive-pressure gas storage tank, wherein the vacuum system is used to provide vacuum for the pulp molding equipment, and the positive-pressure gas storage tank is connected to the air pressure port of the pulp molding equipment.

[0032] Beneficial effects: The vacuum system is used to provide vacuum for pulp molding equipment, and cooperates with the gas-liquid separator to meet the large amount of production wastewater generated by the vacuum filtration process of pulp molding, and to separate gas and liquid. By setting up a positive pressure gas storage tank, the air pressure of the pulp molding equipment is guaranteed to be stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of a pulp molding system according to an embodiment of the present invention;

[0035] Figure 2 for Figure 1 A is a partial enlarged schematic diagram;

[0036] Figure 3 for Figure 1 A partial enlarged schematic diagram of B in the middle;

[0037] Figure 4 for Figure 1 A partial enlarged schematic diagram of C in the middle;

[0038] Figure 5 for Figure 1 A partial enlarged schematic diagram of D in the middle;

[0039] Figure 6 for Figure 1 A partial enlarged schematic diagram of E in the figure.

[0040] Description of reference numerals:

[0041] 001, pulp molding equipment; 002, steam inlet; 003, condensate outlet; 004, equipment overflow port; 005, pulp supply port; 006, hot extraction port; 007, cold extraction port; 008, air compressor port; 009, equipment sewage outlet; 010, equipment water supply port;

[0042] 1. Steam engine water supply tank; 101. First water supply port; 102. First water return port; 103. Second water inlet; 104. Steam water supply overflow port; 2. Steam engine; 201. First water inlet; 202. Steam outlet; 203. Steam drain port; 3. Steam air supply pipeline; 4. Condensate recovery system; 401. Condensate recovery port; 402. Water outlet; 403. Condensate overflow port; 404. Air outlet; 405. Condensate drain port; 406. Condensate drain port; 5. Condensate pipeline; 6. First water supply pipeline; 7. First ball valve; 8. Second ball valve; 9. Third ball valve; 10. Second connecting branch pipe; 11, fourth ball valve; 12, first steam trap; 13, first stop valve; 14, first connecting branch pipe; 15, second steam trap; 16, third connecting branch pipe; 17, second stop valve; 18, fifth ball valve; 19, sixth ball valve; 20, seventh ball valve; 21, eighth ball valve; 22, floating ball valve; 23, water supply system; 24, water softener; 25, first water inlet pipeline; 26, second water inlet pipeline; 27, first water inlet valve; 28, second water inlet valve; 29, pulper; 2901, third water inlet; 30, first mixing tank; 31, second mixing tank; 32, first slurry supply pump; 33, second slurry supply pump ; 34, slurry outlet pipe; 35, third slurry supply pump; 36, third water inlet pipeline; 37, third water inlet valve; 38, first pipeline; 39, ninth ball valve; 40, buffer overflow tank; 41, return slurry pipe; 42, fourth slurry supply pump; 43, second pipeline; 44, tenth ball valve; 45, third pipeline; 46, eleventh ball valve; 47, fourth pipeline; 48, twelfth ball valve; 49, fifth pipeline; 50, thirteenth ball valve; 51, third stop valve; 52, sixth pipeline; 53, fourteenth ball valve; 54, fifteenth ball valve; 55, fourth water inlet pipeline; 56, fourth water inlet valve; 57, fifth water inlet pipeline; 58, first The fifth water inlet valve; 59, the sixteenth ball valve; 60, the vacuum pump; 61, the gas-liquid separator; 62, the suction pipeline; 621, the first suction branch pipe; 622, the second suction branch pipe; 63, the seventeenth ball valve; 64, the positive pressure gas storage tank; 65, the air pressure source; 66, the air inlet pipeline; 67, the eighteenth ball valve; 68, the air supply main pipe; 69, the nineteenth ball valve; 70, the air supply branch pipe; 71, the twentieth ball valve; 72, the wastewater recovery tank; 73, the first drainage pump; 74, the second drainage pump; 75, the twenty-first ball valve; 76, the twenty-second ball valve; 77, the twenty-third ball valve; 78, the sixth water inlet pipeline; 79, the sixth water inlet valve. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0044] Three-dimensional papermaking is pulp molding technology. Green materials such as bagasse, bamboo, and hardwood are used to make pulp, which is then three-dimensionally molded to form paper bags and tableware. Paper products made by three-dimensional papermaking can be degraded and are green and environmentally friendly products. In the production process of this product, there is a front-end factory system that provides pulp and equipment supporting energy, and a back-end pulp molding equipment that processes the pulp to form a wet embryo, which is then dried to form a finished product. In this manufacturing process, the energy consumed by drying accounts for a large proportion of the production cost. The drying methods include natural drying outside the mold, hot air drying, and hot pressing inside the mold. Hot pressing of the mold can produce products with smooth appearance. Traditional electric heating molds and thermal oil molds are expensive. The production cost of electric heating molds and thermal oil molds accounts for more than 35% of the total production cost. A steam mold has emerged in the related technology. The steam mold is efficient and energy-saving, safe and reliable, and has no risk of combustion due to leakage, simple maintenance, and low price. However, the traditional pulp molding system cannot adapt to the steam mold, and a new system is needed to match the steam mold.

[0045] Combine the following Figures 1 to 6 , describing an embodiment of the present invention.

[0046] According to an embodiment of the present invention, on the one hand, a pulp molding system is provided, including a steam system and a condensate recovery system 4 .

[0047] Among them, the steam system includes a steam engine water supply tank 1 and a steam engine 2, the steam engine water supply tank 1 has a first water supply port 101 and a first water return port 102, the steam engine 2 has a first water inlet 201 and a steam outlet 202, the first water inlet 201 is connected to the first water supply port 101, the steam outlet 202 is connected to a steam gas supply pipeline 3, and the steam gas supply pipeline 3 is suitable for being connected to each steam inlet 002 of the steam mold; the condensate recovery system 4 has a condensate recovery port 401, and the condensate recovery port 401 is connected to a condensate pipeline 5, and the condensate pipeline 5 is suitable for being connected to each condensate outlet 003 of the steam mold.

[0048] In this embodiment, the steam engine water supply tank 1 provides water to the steam engine 2 through the first water supply port 101, and the steam engine 2 heats the water into steam, which flows to the steam supply pipeline 3 through the steam outlet 202. Since the steam supply pipeline 3 is suitable for communicating with each steam inlet 002 of the steam mold, steam is provided to the steam mold through the steam supply pipeline 3, and the steam flows in the steam mold to provide heat, thereby drying the wet embryo in the steam mold. After the steam flows through the steam mold, it flows out from the condensed water outlet 003, flows back to the condensed water recovery system 4 through the condensed water pipeline 5, and can be reused.

[0049] Specifically in one embodiment, the first water inlet 201 is connected to the first water supply port 101 through a first water supply pipeline 6 , and the first water supply pipeline 6 is provided with a first ball valve 7 .

[0050] Specifically in one embodiment, a second ball valve 8 is provided at a position of the steam supply pipeline 3 close to the steam engine 2 .

[0051] Specifically in one embodiment, a third ball valve 9 is provided at a position of the condensate pipeline 5 close to the condensate recovery system 4 .

[0052] Specifically in one embodiment, the steam mold has two steam inlets 002 .

[0053] Specifically in one embodiment, the steam supply pipeline 3 is connected to the two steam inlets 002 through the second connecting branch pipes 10 respectively, and each second connecting branch pipe 10 is provided with a fourth ball valve 11, and whether steam is provided to the steam inlet 002 can be controlled by the on-off of the fourth ball valve 11.

[0054] In one embodiment, a first steam trap 12 is provided at the junction of the steam supply pipeline 3 and the condensate pipeline 5 .

[0055] In this embodiment, by setting a first steam trap 12 at the junction of the steam supply pipeline 3 and the condensate pipeline 5, it can be ensured that the steam supply pipeline 3 removes moisture and ensures that the steam in the steam supply pipeline 3 is in a saturated steam state, which is beneficial to the rapid heat exchange of the steam mold, hot pressing products, shortening the hot pressing time, and increasing production capacity.

[0056] like Figure 3 As shown, the steam supply pipeline 3 and the condensate pipeline 5 have two joints, one of which is provided with a first steam trap 12, and the other is provided with a first stop valve 13.

[0057] In one embodiment, the condensate pipeline 5 is adapted to be connected to each condensate outlet 003 of the steam mold via a first connecting branch pipe 14 , and the first connecting branch pipe 14 is provided with a second steam trap 15 .

[0058] In this embodiment, by providing the second steam trap 15 in each first connecting branch pipe 14, it is possible to ensure that the thermal energy of the steam is fully utilized.

[0059] Specifically in one embodiment, the steam mold has four condensate outlets 003, and the condensate pipeline 5 is connected to each condensate outlet 003 through a first connecting branch pipe 14. Each first connecting branch pipe 14 is provided with a second steam trap 15 to ensure full utilization of steam thermal energy.

[0060] Specific as Figure 3 As shown, each first connecting branch pipe 14 is also connected in parallel with a third connecting branch pipe 16 , and the third connecting branch pipe 16 is provided with a second stop valve 17 , and the second stop valve 17 is connected in parallel with the second steam trap 15 .

[0061] Specific as Figure 3 As shown, two fifth ball valves 18 are further provided on each first connecting branch pipe 14 , wherein one fifth ball valve 18 is close to the condensate outlet 003 , and the other fifth ball valve 18 is close to the condensate pipeline 5 .

[0062] In one embodiment, the steam supply pipeline 3 is located at a higher position than the condensate pipeline 5 .

[0063] In this embodiment, since the steam supply pipeline 3 is located higher than the condensate pipeline 5, it can further ensure that the steam supply pipeline 3 removes moisture, ensuring that the steam in the steam supply pipeline 3 is in a saturated steam state, which is beneficial to the rapid heat exchange of the steam mold, hot pressing products, shortening the hot pressing time, and increasing production capacity.

[0064] In one embodiment, the steam engine water supply tank 1 is provided with a first water return port 102 , and the condensate recovery system 4 is provided with a water outlet 402 , which is connected to the first water return port 102 of the steam engine water supply tank 1 .

[0065] In this embodiment, since the water outlet 402 of the condensate recovery system 4 is connected to the first return water port 102 of the steam engine water supply tank 1, the steam flows through the steam mold, flows out from the condensate outlet 003, and flows back to the condensate recovery system 4 through the condensate pipeline 5. The high-temperature condensate can enter the steam engine water supply tank 1 again, and then be heated by the steam engine 2 to achieve secondary utilization of steam energy.

[0066] Specifically in one embodiment, Figure 2 As shown, the condensate recovery system 4 has a condensate overflow port 403 , through which excess condensate can be discharged when overflowing.

[0067] Further references Figure 2 The condensate recovery system 4 also has an exhaust port 404 , and a sixth ball valve 19 is provided at the exhaust port 404 .

[0068] Further references Figure 2 The condensate recovery system 4 also has a condensate drain port 405 and a condensate drain port 406, through which condensate can be drained, and through which sewage in the condensate recovery system 4 can be drained. The condensate drain port 405 of the condensate recovery system 4 is connected to a first discharge pipeline, and the first discharge pipeline is provided with a seventh ball valve 20, and the condensate drain port 406 of the condensate recovery system 4 is connected to a second discharge pipeline, and the second discharge pipeline is provided with an eighth ball valve 21.

[0069] refer to Figure 2 The steam engine 2 has a steam drain port 203, through which sewage can be discharged. The steam drain port 203 of the steam engine 2 is connected to a third discharge pipeline.

[0070] In one embodiment, the steam engine water supply tank 1 is provided with a second water inlet 103, the second water inlet 103 is connected to a water inlet pipeline, the water inlet pipeline is provided with a water inlet valve, a floating ball valve 22 is provided in the steam engine water supply tank 1, and the pulp molding system also includes a controller, which is communicated with the floating ball valve 22 and the water inlet valve.

[0071] In this embodiment, by setting a floating ball valve 22 in the steam engine water supply tank 1, the liquid level in the steam engine water supply tank 1 can be detected. When the floating ball valve 22 is lower than the preset liquid level, the controller will control the water inlet valve to continue to intake water. When the ball valve is higher than the preset liquid level, the controller will control the water inlet valve to stop intake water, thereby ensuring that the steam will not run without water.

[0072] In one embodiment, the pulp molding system comprises a water supply system 23 , which is connected to the steam engine water supply tank 1 .

[0073] Specifically in one embodiment, the steam system also includes a water softener 24, the water supply system 23 is connected to the water softener 24 through a first water inlet pipe 25, the water softener 24 is connected to the second water inlet 103 of the steam engine water supply tank 1 through a second water inlet pipe 26, the first water inlet pipe 25 is provided with a first water inlet valve 27, and the second water inlet pipe 26 is provided with a second water inlet valve 28.

[0074] In this embodiment, by setting up a water softener 24, water is first softened by the water softener 24 before entering the steam engine water supply tank 1, and then enters the steam engine 2 for heating, which can avoid the formation of scale in the steam engine water supply tank 1 and the steam engine 2.

[0075] Specifically in one embodiment, the steam engine water supply tank 1 is provided with a steam water supply overflow port 104 , and the steam water supply overflow port 104 of the steam engine water supply tank 1 is connected to a fourth discharge pipeline.

[0076] In one embodiment, the pulp molding system further comprises a circulating pulp supply system, which comprises a pulper 29 and a stirring tank assembly. The stirring tank assembly is communicated with the pulper 29 and is used to prepare finished slurry.

[0077] In this embodiment, the raw material paperboard is mixed with water in a ratio required by the process and fed into a pulper 29 to produce a high-concentration slurry. The high-concentration slurry is then fed into a stirring tank assembly for stirring and dilution to produce a finished slurry.

[0078] In one embodiment, the stirring tank assembly includes a first stirring tank 30 and a second stirring tank 31. The first stirring tank 30 is connected to the pulper 29 through a first pulp supply pump 32; the second stirring tank 31 is connected to the first stirring tank 30 through a second pulp supply pump 33, and the second stirring tank 31 is connected to a pulp outlet pipe 34, and the pulp outlet pipe 34 is provided with a third pulp supply pump 35, and the pulp outlet pipe 34 is suitable for being connected to the pulp molding equipment 001.

[0079] In this embodiment, the raw material cardboard is mixed with water in a proportion required by the process and fed into a pulper 29 to form a high-concentration slurry. The high-concentration slurry enters the first stirring tank 30 through a first slurry supply pump 32. Water is added to the first stirring tank 30 to dilute the high-concentration slurry to form a low-concentration slurry that meets the process requirements. The low-concentration slurry that meets the process requirements is supplied to the second stirring tank 31 through a second slurry supply pump 33. Chemical materials that meet the process requirements are added to the second stirring tank 31 to form a finished slurry, which is provided to the pulp molding equipment 001 through a third slurry supply pump 35.

[0080] Specifically in one embodiment, the pulp molding equipment 001 includes a pulp box, the pulp box is provided with a forming mold, and the third pulp supply pump 35 provides finished pulp to the pulp box.

[0081] Specifically in one embodiment, the pulper 29 is provided with a third water inlet 2901 , which is connected to the water supply system 23 via a third water inlet pipeline 36 , and the third water inlet pipeline 36 is provided with a third water inlet valve 37 .

[0082] Specifically in one embodiment, the pulping outlet of the pulper 29 is connected to the first pulp supply pump 32 via a first pipeline 38 , and the first pipeline 38 is provided with a ninth ball valve 39 .

[0083] In one embodiment, the circulating slurry supply system also includes a buffer overflow tank 40, which has a return slurry port and a slurry outlet. The return slurry port is connected to the equipment overflow port 004 of the pulp molding equipment 001 through a return slurry pipe 41, and the slurry outlet is connected to the first stirring tank 30 and / or the second stirring tank 31 through a fourth slurry supply pump 42.

[0084] In this embodiment, a buffer overflow tank 40 is provided, and the slurry flowing out from the equipment overflow port 004 of the pulp molding equipment 001 flows into the buffer overflow tank 40 through the return slurry pipe 41, and can enter the first stirring tank 30 and / or the second stirring tank 31 again for recycling through the fourth slurry supply pump 42.

[0085] Specifically in one embodiment, the pulp outlet pipe 34 is connected to the pulp supply port 005 of the pulp molding equipment 001 through a second pipeline 43 , and the second pipeline 43 is provided with a tenth ball valve 44 .

[0086] Specifically in one embodiment, the pulp return pipe 41 is connected to the equipment overflow port 004 of the pulp molding equipment 001 through a third pipeline 45 , and the third pipeline 45 is provided with an eleventh ball valve 46 .

[0087] Specifically in one embodiment, the outlet of the fourth slurry supply pump 42 is connected to the first stirring tank 30 via a fourth pipeline 47 , and the fourth pipeline 47 is provided with a twelfth ball valve 48 .

[0088] Specifically in one embodiment, the fourth pipeline 47 is connected to the second stirring tank 31 through a fifth pipeline 49 , and the fifth pipeline 49 is provided with a thirteenth ball valve 50 .

[0089] In one embodiment, the slurry outlet pipe 34 is communicated with the slurry return pipe 41 , and a third stop valve 51 is provided at the junction of the slurry outlet pipe 34 and the slurry return pipe 41 .

[0090] In this embodiment, since the pulp outlet pipe 34 is connected to the pulp return pipe 41, and a third stop valve 51 is provided at the junction of the pulp outlet pipe 34 and the pulp return pipe 41, when the pulp molding equipment 001 is not working, the slurry flowing out of the pulp outlet pipe 34 can flow back to the buffer overflow tank 40 through the pulp return pipe 41 for circulation. Therefore, the shutdown of the pulp molding equipment 001 does not affect the operation of the pulp supply circulation system.

[0091] In one embodiment, the diameter of the slurry outlet pipe 34 is smaller than that of the slurry return pipe 41 .

[0092] In this embodiment, since the diameter of the pulp outlet pipe 34 is smaller than that of the pulp return pipe 41, it can be ensured that the pulp return pipe 41 will not be filled.

[0093] Specifically in one embodiment, the outlet of the third slurry supply pump 35 is connected to the sixth pipeline 52, the slurry outlet pipe 34 is connected to the sixth pipeline 52, and the slurry outlet pipe 34 is provided with a fourteenth ball valve 53 near the sixth pipeline 52. The sixth pipeline 52 is used to drain the slurry in the second mixing tank 31, and the sixth pipeline 52 is provided with a fifteenth ball valve 54.

[0094] In one embodiment, the pulp outlet pipe 34 is higher than the pulp molding equipment 001 , and the pulp return pipe 41 is lower than the pulp outlet pipe 34 .

[0095] Specifically in one embodiment, the first stirring tank 30 is connected to the water supply system 23 via a fourth water inlet pipeline 55 , and the fourth water inlet pipeline 55 is provided with a fourth water inlet valve 56 .

[0096] Specifically in one embodiment, the second stirring tank 31 is connected to the water supply system 23 via a fifth water inlet pipeline 57 , and the fifth water inlet pipeline 57 is provided with a fifth water inlet valve 58 .

[0097] Specifically in one embodiment, the drain port of the buffer overflow tank 40 is connected to a fifth discharge pipeline, and the fifth discharge pipeline is provided with a sixteenth ball valve 59 .

[0098] In one embodiment, the pulp molding system further includes a vacuum system and a gas-liquid separator 61 , wherein the vacuum system is used to provide vacuum for the pulp molding equipment 001 .

[0099] In this embodiment, the vacuum system is used to provide vacuum for the pulp molding equipment 001, and cooperates with the gas-liquid separator 61 to meet the needs of the large amount of production wastewater generated by the pulp molding vacuum filtration process and perform gas-liquid separation.

[0100] Specifically in one embodiment, the vacuum system includes a vacuum pump 60, which is connected to a gas-liquid separator 61, and the gas-liquid separator 61 is connected to a suction pipeline 62. The suction pipeline 62 is connected to a hot suction port 006 of the pulp molding equipment 001 through a first suction branch pipe 621, and the suction pipeline 62 is connected to a cold suction port 007 of the pulp molding equipment 001 through a second suction branch pipe 622. The first suction branch pipe 621 and the second suction branch pipe 622 are both provided with a seventeenth ball valve 63.

[0101] Specifically in one embodiment, the pulp molding equipment 001 is provided with two hot extraction ports 006 .

[0102] In one embodiment, the pulp molding system further includes a positive pressure air storage tank 64 , which is connected to the air pressure port 008 of the pulp molding equipment 001 .

[0103] In this embodiment, by providing a positive pressure gas storage tank 64, the gas pressure of the pulp molding equipment 001 is ensured to be stable.

[0104] Specifically in one embodiment, the air inlet end of the positive pressure air storage tank 64 is connected to the air pressure source 65 through an air inlet pipe 66, and the air inlet pipe 66 is provided with an eighteenth ball valve 67. The air outlet end of the positive pressure air outlet tank is connected to an air supply main pipe 68, and the air supply main pipe 68 is provided with a nineteenth ball valve 69. The air supply main pipe 68 is connected to the air pressure port 008 of the pulp molding equipment 001 through an air supply branch pipe 70, and the air supply branch pipe 70 is provided with a twentieth ball valve 71.

[0105] In one embodiment, the pulp molding system further includes a wastewater recovery tank 72, the wastewater recovery tank 72 is connected to the gas-liquid separation tank through a first drainage pump 73, the first stirring tank 30 is connected to the wastewater recovery tank 72 through a second drainage pump 74, and a twenty-first ball valve 75 is provided between the second drainage pump 74 and the wastewater tank. A twenty-second ball valve 76 is provided at the drainage port of the wastewater recovery tank 72.

[0106] In one embodiment, the equipment sewage outlet 009 of the pulp molding equipment 001 is connected to a sixth discharge pipeline, and the sixth discharge pipeline is provided with a twenty-third ball valve 77 .

[0107] In one embodiment, the water supply system 23 is connected to the equipment water supply port 010 of the pulp molding equipment 001 through a sixth water inlet pipeline 78 , and the sixth water inlet pipeline 78 is provided with a sixth water inlet valve 79 .

[0108] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the present application.

Claims

1. A pulp molding system, characterized in that: include: A steam system, comprising a steam engine water supply tank (1) and a steam engine (2), wherein the steam engine water supply tank (1) has a first water supply port (101) and a first water return port (102), and the steam engine (2) has a first water inlet (201) and a steam outlet (202), wherein the first water inlet (201) is connected to the first water supply port (101), and the steam outlet (202) is connected to a steam gas supply pipeline (3), and the steam gas supply pipeline (3) is suitable for being connected to each steam inlet (002) of a steam mold; The condensate recovery system (4) has a condensate recovery port (401), the condensate recovery port (401) is connected to a condensate pipeline (5), and the condensate pipeline (5) is suitable for communicating with each condensate outlet (003) of the steam mold.

2. The pulp molding system according to claim 1, characterized in that: A first steam trap (12) is provided at the junction of the steam supply pipeline (3) and the condensate pipeline (5); The condensate pipeline (5) is suitable for being connected to each condensate outlet (003) of the steam mold through a first connecting branch pipe (14), and the first connecting branch pipe (14) is provided with a second steam trap (15).

3. The pulp molding system according to claim 1, characterized in that: The steam supply pipeline (3) is located at a higher position than the condensate pipeline (5).

4. The pulp molding system according to claim 1, characterized in that: The steam engine water supply tank (1) is provided with a first water return port (102), and the condensate recovery system (4) is provided with a water outlet (402), and the water outlet (402) is connected to the first water return port (102) of the steam engine water supply tank (1).

5. The pulp molding system according to claim 1, characterized in that: The steam engine water supply tank (1) is provided with a second water inlet (103), the second water inlet (103) is connected to a water inlet pipeline, the water inlet pipeline is provided with a water inlet valve, a floating ball valve (22) is provided in the steam engine water supply tank (1), and the pulp molding system further comprises a controller, the controller is communicatively connected with the floating ball valve (22) and the water inlet valve.

6. The pulp molding system according to any one of claims 1 to 5, characterized in that: The pulp molding system further includes a circulating pulp supply system, and the circulating pulp supply system includes: Pulper (29); A stirring tank assembly is connected to the pulper (29), and the stirring tank assembly is used to prepare a finished slurry.

7. The pulp molding system according to claim 6, characterized in that: The mixing tank assembly comprises: A first stirring tank (30) is connected to the pulper (29) via a first pulp supply pump (32); The second stirring tank (31) is connected to the first stirring tank (30) via a second slurry supply pump (33); the second stirring tank (31) is connected to a slurry outlet pipe (34); the slurry outlet pipe (34) is provided with a third slurry supply pump (35); and the slurry outlet pipe (34) is suitable for connecting to a pulp molding device (001).

8. The pulp molding system according to claim 7, characterized in that: The circulating slurry supply system also includes: a buffer overflow trough (40), the buffer overflow trough (40) having a pulp return port and a pulp discharge port, the pulp return port being connected to the overflow port of the pulp molding equipment (001) via a pulp return pipe (41), and the pulp discharge port being connected to the first stirring tank (30) and / or the second stirring tank (31) via a fourth pulp supply pump (42); The slurry outlet pipe (34) is communicated with the slurry return pipe (41), and a third stop valve (51) is provided at the junction of the slurry outlet pipe (34) and the slurry return pipe (41).

9. The pulp molding system according to claim 8, characterized in that: The caliber of the pulp outlet pipe (34) is smaller than that of the pulp return pipe (41).

10. The pulp molding system according to any one of claims 1 to 5 and 7 to 9, characterized in that: The pulp molding system further comprises a vacuum system, a gas-liquid separator (61) and a positive pressure gas storage tank (64); the vacuum system is used to provide vacuum for the pulp molding equipment (001); the positive pressure gas storage tank (64) is connected to an air pressure port (008) of the pulp molding equipment (001).

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