Sheet making system

Abstract

According to the sheet making system, slurry is automatically conveyed to a slurry barrel through a pneumatic diaphragm pump, the slurry is automatically stirred and uniformly mixed in the slurry barrel through a lifting device, the effect of rapid vacuum water filtration is achieved through a vacuum pump and a vacuum buffer tank, and the vacuum water drainage speed is flexibly adjusted through a pneumatic adjusting valve according to the characteristics of the slurry. The sheet making system disclosed by the utility model is high in automation degree, high in working efficiency and relatively high in practical value.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of biological pharmaceutical process technology, and specifically relates to a sheet copying system. BACKGROUND

[0002] The paper sheet forming copying machine is a device for forming paper or sheet material by wet forming of plant fibers, animal fibers, inorganic fibers, chemical fibers, synthetic fibers, etc. by using the rapid katharometer method or Tappi (American pulp and paper industry technology association) forming method. The existing copying machine mainly filters water through gravity or vacuum drainage after manual pulp mixing and pouring.

[0003] Chinese patent CN214992672U discloses a novel vacuum sheet copying machine, which comprises a workbench, a fixed barrel is fixedly installed on the upper surface of the workbench, a slurry storage barrel is hingedly connected above the fixed barrel, a groove A is formed in the upper end of the fixed barrel, a movable block is arranged in the groove A, a plurality of springs A are arranged on the side wall of one side of the movable block, one end of the spring A is connected to the inner side wall of the groove A, a push rod is connected to the side wall of the side of the movable block away from the spring A, a groove B is formed in the lower end of the slurry storage barrel, a clamping block is fixedly installed in the inner part of the groove B, a through hole is formed in the bottom end of the slurry storage barrel, a forming net is arranged on the upper end of the fixed barrel, a protruding block is installed on the side wall of the forming net, a clamping groove is formed in the inner side wall of the fixed barrel, a spring B is fixedly installed in the inner part of the clamping groove, and a conveying pipeline is connected to the bottom end of the fixed barrel. The utility model is simple and convenient to operate, and the copied sheet is not easy to break after being formed and removed. The patent mainly improves the convenience of removing the copied sheet after forming, and cannot meet the needs of automatic pulp pouring, mixing, rapid vacuum drainage, vacuum degree adjustment and the like.

[0004] Chinese patent (CN111501390A) relates to a sheet copying system for a laboratory and an operation method thereof. The sheet copying system for the laboratory comprises: a compressed air providing device for providing compressed air; a pressure stabilizing tank connected to the compressed air providing device through a first air supply pipeline, the pressure stabilizing tank being configured to pre-store compressed air; and a sheet copying machine connected to the pressure stabilizing tank through a second air supply pipeline; wherein the first air supply pipeline is configured to be opened before the second air supply pipeline. The sheet copying system provided by the present application first opens the first air supply pipeline when gas is needed for stirring work, pre-stores compressed air in the pressure stabilizing tank, opens the second air supply pipeline after the air pressure in the pressure stabilizing tank is stabilized, and provides the sheet copying machine with compressed air with stable pressure to realize the stirring function, thereby avoiding the problem that the sheet copying system cannot work normally due to insufficient gas pressure supplied by the pipeline. The patent mainly improves the compressed air providing device of the laboratory-level sheet copying machine to realize the stirring function, and cannot meet the needs of automatic pulp pouring, mixing, rapid vacuum drainage, vacuum degree adjustment and the like.

[0005] Chinese patent (CN116905268A) relates to a multi-layer pulp integrated forming sheet machine and sheeting method, which changes the previous multi-layer paper needs to be stacked after sheeting method, can complete the sheeting of multi-layer pulp at one time, while effectively avoiding the mixing between multi-layer pulp, also can make the multi-layer pulp have a certain fusion on the contact surface, so as to ensure the effect of sheeting to get the required product. At the same time, the sheeting machine designed by the invention not only realizes the technical purpose of one-time sheeting of multi-layer pulp, but also considers the pressure balance problem between the pulp, effectively realizes the automatic one-time forming of multi-layer pulp. The invention mainly puts forward the sheeting machine and method of multi-layer pulp, which cannot meet the needs of automatic pulp pouring, pulp mixing, rapid vacuum drainage, vacuum degree adjustment and other functions.

[0006] In summary, the existing sheeting machine has relatively single function, which is troublesome to use and cannot meet the needs of different pulp products. There are the following problems:

[0007] (1) For large size or high grammage paper pulp products, manual pouring of pulp into the equipment affects the use efficiency.

[0008] (2) Different pulps need to be mixed manually or by using a mixer before sheeting, which affects the use efficiency.

[0009] (3) There may be a situation that the vacuum drainage time is too long.

[0010] (4) Different pulps have different vacuum drainage speeds, and the vacuum drainage speed cannot be adjusted flexibly according to the characteristics of the pulp. SUMMARY

[0011] In order to overcome the defects of the prior art, the purpose of the present application is to provide a sheeting system. In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0012] The present application provides a sheeting system, which comprises a vacuum suction device, a feeding device, a valve assembly, a control device and a sheeting machine. The sheeting machine is connected with the vacuum suction device and the feeding device through the valve assembly, and the control device is connected with the valve assembly.

[0013] The control device opens the transmission path of the feeding device to the sheeting machine through the valve assembly, and sends the pulp into the sheeting machine.

[0014] The sheeting machine comprises a pulp bucket, a pressing plate and a lifting device. The lifting device controls the lifting of the pressing plate, and stirs the pulp entering the pulp bucket.

[0015] The control device controls the vacuum water filtration of the pulp by the vacuum suction device through the valve assembly.

[0016] Preferably, the lifting device comprises an electric cylinder connected with the pressing plate, and the pressing plate is controlled to rise and fall through the electric cylinder.

[0017] Preferably, the feeding device comprises a barrel and a pneumatic diaphragm pump, and the pulp in the barrel is controlled to enter the slurry tank through the pneumatic diaphragm pump.

[0018] Preferably, the valve assembly comprises a sixth pneumatic ball valve, and the pneumatic diaphragm pump is connected with the sheeting machine through the sixth pneumatic ball valve.

[0019] Preferably, the vacuum suction device comprises a vacuum pump and a vacuum buffer tank, the vacuum pump is connected with the vacuum buffer tank, the valve assembly comprises a first pneumatic ball valve, and the vacuum buffer tank is connected with the sheeting machine through the first pneumatic ball valve.

[0020] Preferably, the valve assembly comprises a pneumatic regulating valve for regulating the vacuum pressure of the sheeting machine.

[0021] Preferably, a vacuum gauge is arranged between the vacuum control tank and the sheeting machine, and is used for reading the vacuum pressure of the sheeting machine.

[0022] Preferably, the valve assembly further comprises a third pneumatic ball valve as a tap water inlet.

[0023] Preferably, the sheeting system further comprises a control device for controlling the valve assembly.

[0024] The sheeting system of the utility model, through the pneumatic diaphragm pump, the pulp is automatically transported to the slurry tank, through the lifting device, the pulp is automatically stirred and mixed in the slurry tank, through the vacuum pump and the vacuum buffer tank, the effect of rapid vacuum water filtration is achieved, and through the pneumatic regulating valve, the speed of vacuum drainage is flexibly adjusted according to the characteristics of the pulp. The sheeting system of the utility model has high automation degree and high working efficiency, and has high practical value. BRIEF DESCRIPTION OF DRAWINGS

[0025] The reader will understand various aspects of the utility model more clearly after reading the specific embodiment of the utility model with reference to the drawings. Among them,

[0026] Figure 1 It is the sheeting system structure diagram of one embodiment of the utility model;

[0027] Figure 2 It is the sheeting system structure diagram of another embodiment of the utility model;

[0028] EXPLANATION OF REFERENCE NUMERALS:

[0029] 1: a sheet copying machine; 2: a vacuum suction device; 3: a feeding device; 4: a valve assembly; 5: a control device;

[0030] 101: a slurry tank; 102: a pressing plate; 103: a lifting device; 104: a filter screen; 105: a water collecting tray;

[0031] 201: a vacuum pump; 202: a vacuum buffer tank;

[0032] 301: a barrel; 302: a pneumatic diaphragm pump;

[0033] 401: a first pneumatic ball valve; 402: a second pneumatic ball valve; 403: a third pneumatic ball valve; 404: a fourth pneumatic ball valve; 405: a fifth pneumatic ball valve; 406: a sixth pneumatic ball valve; 407: a pneumatic regulating valve; 408: a vacuum gauge; 409: a first manual ball valve; 410: a second manual ball valve. DETAILED DESCRIPTION

[0034] In order to make the technical contents disclosed in the present application more detailed and complete, reference can be made to the accompanying drawings and the following specific embodiments of the present application. However, it should be understood by those skilled in the art that the embodiments provided below are not intended to limit the scope covered by the present application. In addition, the accompanying drawings are only used for illustrative purposes and are not drawn according to their original size.

[0035] In the specification, "connection" includes both direct connection and indirect connection. In the specification, "several" and "a plurality of" refer to two or more. In the specification and claims and the above-mentioned drawings, the terms "first", "second", "third", "fourth" and the like (if any) are used only to distinguish similar objects, and do not necessarily indicate a particular order or sequence.

[0036] It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0037] The technical solutions of the present application will be described in detail below. The following embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0038] Embodiment one:

[0039] The embodiment provides a sheet former for forming paper or sheet material by wet forming of pulp. Please refer to Figure 1 The sheet former 1 comprises a pulp tank 101, a press plate 102 and a lifting device 103. The lifting device 103 comprises an electric cylinder connected with the press plate 102. The press plate 102 and the lifting device 103 are arranged in the pulp tank 101. The size of the press plate 102 is smaller than the inner diameter of the pulp tank 101, that is, there is a space between the press plate 102 and the inner wall of the pulp tank 101 for pulp to pass through.

[0040] In the embodiment, when the pulp enters the pulp tank 101, the lifting device 103 controls the press plate 102 to rise and fall through the electric cylinder, and the pulp is stirred. Specifically, the pulp at the bottom is extruded to the top through the space under the pressure of the press plate 102, and the different pulps in the pulp tank 101 are stirred and mixed uniformly through the continuous reciprocating motion of the press plate 102. Compared with the prior art, the electric cylinder is used to control the press plate to automatically mix the pulp, and the working efficiency is higher, especially for large-size or high-grammage paper pulp products.

[0041] In the embodiment, the pulp tank 101 is further provided with a filter screen 104 and a water collecting tray 105. The filter screen 104 is arranged below the press plate 102, and the water collecting tray 105 is arranged below the filter screen 104. Specifically, the filter screen 104 is used for filtering water during the sheet forming process of the paperboard, and also can play a role of receiving the wet paperboard. The water collecting tray 105 is used for receiving the overflowed tap water at the bottom of the pulp tank 101 during cleaning of the pulp tank 101. Specifically, an opening is arranged on the water collecting tray 105, and the overflowed tap water flows back to the water storage tank at the bottom.

[0042] Embodiment two

[0043] The embodiment provides a sheet forming system for forming paper or sheet material by wet forming of pulp. Please refer to Figure 2 The sheet forming system comprises a vacuum suction device 2, a feeding device 3, a valve assembly 4, a control device 5 and a sheet former 1. The sheet former 1 comprises a pulp tank 101, a press plate 102 and a lifting device 103.

[0044] In the embodiment, the sheet former 1 is connected with the vacuum suction device 2 and the feeding device 3 through the valve assembly 4, and the control device 5 is connected with the valve assembly 4. Specifically, the sheet former 1 is connected with the vacuum suction device 2 and the feeding device 3 through a hose, and the valve assembly 4 is arranged on the hose.

[0045] In the embodiment, the control device 5 opens the conveying passage of the feeding device 3 to the sheeting machine 1 through the valve assembly 4, and sends the pulp into the sheeting machine 1, and the pulp can be one or more kinds of pulp. The lifting device 103 controls the lifting of the press plate 102 in the pulp tank 101, and the pulp is stirred and mixed, and after the mixed pulp is naturally filtered, the control device 5 controls the vacuum suction device 2 to perform vacuum filtration on the pulp through the valve assembly 4. The sheeting system has higher automation and higher working effect compared with the prior art of manually conveying pulp and manually stirring.

[0046] Embodiment three:

[0047] The embodiment provides a sheeting system, please refer to Figure 1 、 Figure 2 , the sheeting system includes a vacuum suction device 2, a feeding device 3, a valve assembly 4, a control device 5 and a sheeting machine 1. The sheeting machine 1 includes a pulp tank 101, a press plate 102, a lifting device 103, a filter screen 104 and a water collecting tray 105; the vacuum suction device 2 includes a vacuum pump 201 and a vacuum buffer tank 202, the vacuum buffer tank 202 is provided with a drain port for the drainage of vacuum dewatering; the feeding device 3 includes a barrel 301 and a pneumatic diaphragm pump 302; the valve assembly 4 includes a first pneumatic ball valve 401, a second pneumatic ball valve 402, a third pneumatic ball valve 403, a fourth pneumatic ball valve 404, a fifth pneumatic ball valve 405, a sixth pneumatic ball valve 406, a pneumatic regulating valve 407, a vacuum gauge 408, a first manual ball valve 409 and a second manual ball valve 410.

[0048] In the embodiment, the first manual ball valve 409 and the second manual ball valve 410 are arranged to increase the manual switch and enhance the safety of the sheeting system. Meanwhile, considering the safety, the first manual ball valve 409 and the second manual ball valve 410 are arranged as manual ball valves, and in other embodiments of the utility model, the first manual ball valve 409 and the second manual ball valve 410 can also be replaced by pneumatic ball valves, which are more convenient to use.

[0049] In the embodiment, the vacuum pump 201 is connected with the vacuum buffer tank 202 through the first manual ball valve 409, the vacuum buffer tank 202 is connected with the pneumatic regulating valve 407 through the second manual ball valve 410, the pneumatic regulating valve 407 is connected with the first pneumatic ball valve 401, the first pneumatic ball valve 401 is connected with the sheet copying machine 1, and the vacuum gauge 408 is arranged between the pneumatic regulating valve 407 and the first pneumatic ball valve 401. The barrel 301 is connected with the pneumatic diaphragm pump 302, the pneumatic diaphragm pump 302 is connected with the sheet copying machine 1 through the sixth pneumatic ball valve 406. The second pneumatic ball valve 402, the third pneumatic ball valve 403, the fourth pneumatic ball valve 404 and the fifth pneumatic ball valve 405 are connected with the sheet copying machine 1.

[0050] 404、The fifth pneumatic ball valve 405 is connected with the sheet copying machine 1. Specifically, the second pneumatic ball valve 402 is a drain port for natural water filtration, the fourth pneumatic ball valve 404 is a white water inlet, and the fifth pneumatic ball valve 405 is a rapid pressure recovery valve. After the vacuum drainage is completed, the slurry bucket 101 cannot be opened in time due to the negative pressure. At this time, the fifth pneumatic ball valve 405 is opened to restore the atmospheric pressure, and the slurry bucket 101 can be opened.

[0051] In the embodiment, the pneumatic regulating valve 407 is used for adjusting the vacuum pressure of the sheet copying machine 1.

[0052] In the embodiment, the vacuum gauge 408 is used for reading the vacuum pressure of the sheet copying machine 1.

[0053] In the embodiment, the third pneumatic ball valve 403 is a gravity drainage valve, which is used as a tap water inlet.

[0054] In the embodiment, the pneumatic diaphragm pump 302 is used for controlling the pulp in the barrel 301 to enter the slurry bucket 101. Specifically, the opening and closing of the pneumatic diaphragm pump 302 are controlled by the control device 5.

[0055] In the embodiment, the control device 5 is an electric control box, which is connected with the first pneumatic ball valve 401, the second pneumatic ball valve 402, the third pneumatic ball valve 403, the fourth pneumatic ball valve 404, the fifth pneumatic ball valve 405, the sixth pneumatic ball valve 406, the pneumatic regulating valve 407, the electric cylinder and the pneumatic diaphragm pump 302. The opening and closing of the first pneumatic ball valve 401, the second pneumatic ball valve 402, the third pneumatic ball valve 403, the fourth pneumatic ball valve 404, the fifth pneumatic ball valve 405, the sixth pneumatic ball valve 406 and the pneumatic regulating valve 407 are controlled by the electric control box, and the electric cylinder and the pneumatic diaphragm pump 302 are controlled to work by the electric control box, so as to realize the automatic control of the sheet copying system.

[0056] Embodiment Four

[0057] This embodiment describes the use process of the sheet copying system described in Embodiment Three, to further illustrate the technical scheme of the present application. The specific operation process of the sheet copying system is as follows:

[0058] (1) Before copying, according to the actual production needs, a certain amount of tap water or white water is injected into the slurry barrel 101, and then the copying is carried out after the water storage is completed. Specifically, when tap water is selected, the tap water enters the slurry barrel 101 from the third pneumatic ball valve 403; when white water is selected, the white water enters the slurry barrel 101 from the fourth pneumatic ball valve 404.

[0059] (2) Turn on the pneumatic diaphragm pump 302 through the control device 5, open the sixth pneumatic ball valve 406, and automatically transport the slurry from the barrel 301 to the slurry barrel 101 of the sheet copying machine 1 through the pneumatic diaphragm pump 302;

[0060] (3) Turn on the electric cylinder through the control device 5, control the pressing plate 102 to rise and fall in the slurry barrel 101 by a short distance, and stir and mix the slurry;

[0061] (4) After stirring is completed, open the second pneumatic ball valve 402 to naturally filter water in the slurry barrel. Specifically, the natural water filtration is that the pressing plate 102 mixes the slurry, and relies on the gravity of the slurry to filter water. Specifically, after the slurry is mixed, the second pneumatic ball valve 402 is opened, part of the water in the slurry will be naturally filtered out and discharged through the second pneumatic ball valve 402.

[0062] (5) Close the second pneumatic ball valve 402, adjust the vacuum pressure of the vacuum buffer tank 202 to the sheet copying machine 1 through the pneumatic regulating valve 407, and the reading of the vacuum gauge 408 can display the pressure value. After the vacuum pressure is adjusted to the specified pressure value, open the first pneumatic ball valve 401 to perform vacuum water filtration. Specifically, the closing time of the second pneumatic ball valve 402 is determined by the specific process, and is usually after the water level does not obviously decrease after filtration. In other embodiments of the present application, the closing time of the second pneumatic ball valve 402 can also be determined according to the actual situation. Specifically, the vacuum water filtration is to filter out the remaining water in the slurry through the action of vacuum pressure. After vacuum water filtration is started, paperboard formation can be waited.

[0063] (6) In the vacuum filter process, the vacuum buffer tank 202 can be connected to the vacuum filter 1 through the pneumatic regulating valve 407 to adjust the vacuum pressure, and after adjusting the vacuum pressure again through the pneumatic regulating valve 407, the first pneumatic ball valve 401 is closed, the fifth pneumatic ball valve 405 is opened, and when the pressure display is 0 bar, the fifth pneumatic ball valve 405 is closed. Specifically, the first pneumatic ball valve 401 is closed after the paperboard is formed, and specifically, the paperboard formation can be determined by observing the paperboard or hearing the obvious paperboard evacuation sound, and in special processes, the first pneumatic ball valve 401 can also be closed in advance, or it can be closed according to the needs. Specifically, due to the action of vacuum negative pressure, the slurry barrel 101 cannot be opened immediately after the sheeting is completed, and the atmospheric pressure is restored by opening the fifth pneumatic ball valve 405, and when the pressure display is 0 bar, the atmospheric pressure is restored, at this time, the slurry barrel 101 can be opened to quickly take out the paperboard.

[0064] (7) After the vacuum filter is completed, the slurry is formed into paperboard by sheeting, and the paperboard is taken out of the sheeting machine 1.

[0065] The sheeting system of the utility model, through the pneumatic diaphragm pump, slurry is automatically delivered to the slurry barrel, through the lifting device, the slurry is automatically stirred and mixed in the slurry barrel, through the vacuum pump and the vacuum buffer tank, the effect of rapid vacuum filter is achieved, and through the pneumatic regulating valve, the speed of vacuum drainage is flexibly adjusted according to the characteristics of the slurry. The sheeting system of the utility model has high automation degree and high work efficiency, and has high practical value.

[0066] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not the limitation of the implementation mode of the utility model. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or changes can be made, the enumerated embodiments of the utility model cannot be exhausted to all implementation modes, and all the literatures mentioned in the utility model are cited as reference in this application, just like a document is cited as reference alone.

Claims

1. A sheet transfer system, characterized by, The system comprises a vacuum suction device, a feeding device, a valve assembly, a control device and a sheet copying machine, the sheet copying machine is connected with the vacuum suction device and the feeding device through the valve assembly, and the control device is connected with the valve assembly; The control device opens the transmission path of the feeding device to the sheet copying machine through the valve assembly, and sends the slurry into the sheet copying machine; The sheet copying machine comprises a slurry barrel, a pressing plate and a lifting device, the lifting device controls the lifting of the pressing plate, and stirs the slurry entering the slurry barrel; The control device controls the vacuum water filtering of the slurry through the valve assembly.

2. The sheet lifting system according to claim 1, characterized in that The lifting device comprises an electric cylinder connected with the pressing plate, and the lifting of the pressing plate is controlled through the electric cylinder.

3. The sheet lifting system according to claim 1, wherein The feeding device comprises a barrel and a pneumatic diaphragm pump, and the slurry in the barrel enters the slurry barrel through the pneumatic diaphragm pump.

4. The sheet lifting system according to claim 3, characterized in that The valve assembly comprises a sixth pneumatic ball valve, and the pneumatic diaphragm pump is connected with the sheet copying machine through the sixth pneumatic ball valve.

5. The system according to claim 4, wherein The vacuum suction device comprises a vacuum pump and a vacuum buffer tank, the vacuum pump is connected with the vacuum buffer tank, the valve assembly comprises a first pneumatic ball valve, and the vacuum buffer tank is connected with the sheet copying machine through the first pneumatic ball valve.

6. The system according to claim 5, wherein The valve assembly comprises a pneumatic regulating valve for regulating the vacuum pressure of the sheet copying machine.

7. The system according to claim 6, wherein A vacuum gauge is arranged between the vacuum buffer tank and the sheet copying machine, and is used for reading the vacuum pressure of the sheet copying machine.

8. The system according to claim 1, wherein The valve assembly further comprises a third pneumatic ball valve as a tap water inlet.

9. The system for transferring according to claim 1, wherein, The sheet copying system further comprises a control device for controlling the valve assembly.

Images