Drying oven pipeline system and coating machine

Abstract

The utility model relates to the field of battery production equipment, in particular to a drying oven pipeline system and a coating machine. The drying oven pipeline system comprises a fresh air supplementing mechanism and a plurality of drying ovens which are sequentially communicated; the fresh air supplementing mechanism comprises a first clean fresh air bin, a second clean fresh air bin and a fresh air supplementing pipe. The drying oven positioned at the head end of the coating machine is communicated with a first clean fresh air bin through a first negative pressure bin, and the drying oven positioned at the tail end of the coating machine is communicated with a second clean fresh air bin through a second negative pressure bin; the first negative pressure bin and / or the second negative pressure bin are / is communicated with a fresh air supplementing pipe; the fresh air supplementing pipe communicates with the peripheral area of the drying oven and is provided with a filtering device. According to the drying oven pipeline system, the fresh air supplementing pipe is arranged to supplement fresh air for the drying oven, the air volume input into the drying oven by the second clean fresh air bin can be reduced, and the energy consumption of the dehumidifier is reduced. And the environment temperature of the drying oven area can be reduced, the service life of electrical components on the drying oven is prolonged, and the energy consumption of an exhaust fan and a fresh air fan on the drying oven is reduced.

Description

Technical Field

[0001] The present application relates to the field of battery production equipment, and in particular to an oven piping system and a coating machine. Background Art

[0002] At present, in the coating process, the energy consumption and operating costs of the coating machine oven heating and fresh air supply equipment account for 40% of the energy consumption of the entire battery production process. The coating process is a high-energy consumption process. The main reason for the high energy consumption of the coating process is that the fresh air supply method of the oven and the fresh air supply method of the first and last sections cause the energy consumption of the dehumidifier and the recovery system to increase. At the same time, the high ambient temperature in the oven area will reduce the service life of the electrical components on the oven and increase the energy consumption of the exhaust fan and fresh air fan. Utility Model Content

[0003] The purpose of the present application is to provide an oven piping system and a coating machine, which can reduce the energy consumption of a dehumidifier and a recovery system and reduce the ambient temperature of the oven area.

[0004] The present application provides an oven piping system for a coating machine, the oven piping system comprising a fresh air replenishment mechanism and a plurality of ovens connected in sequence;

[0005] The fresh air replenishment mechanism includes a first clean fresh air bin, a second clean fresh air bin and a fresh air replenishment pipe; the oven located at the head end of the coating machine is connected to the first clean fresh air bin through a first negative pressure bin, and the oven located at the tail end of the coating machine is connected to the second clean fresh air bin through a second negative pressure bin;

[0006] The first negative pressure bin and / or the second negative pressure bin is connected to the fresh air supply duct; the fresh air supply duct is connected to the peripheral area of ​​the oven, and the fresh air supply duct is provided with a filtering device to allow the ambient air in the peripheral area of ​​the oven to enter the corresponding first negative pressure bin or the second negative pressure bin after filtering.

[0007] In the above technical solution, further, the fresh air supply duct includes an air duct body and a rotor fan;

[0008] The first negative pressure chamber and / or the second negative pressure chamber are connected to the air outlet end of the corresponding air duct body, and the air inlet end of the air duct body is equipped with the filtering device;

[0009] The rotary fan is installed between the filter device and the air outlet end of the air duct body.

[0010] In the above technical solution, further, a recovery pipeline is included;

[0011] The recovery pipeline includes an exhaust main air duct, a fresh air main air duct and a heat exchanger, the exhaust main air duct and the fresh air main air duct are both connected to the heat exchanger, and the gas in the exhaust main air duct exchanges heat with the gas in the fresh air main air duct through the heat exchanger;

[0012] The oven located in the middle of the coating machine is provided with a first exhaust branch pipe and a fresh air branch pipe, the first exhaust branch pipe is connected to the exhaust main air duct, and the fresh air branch pipe is connected to the fresh air main air duct.

[0013] In the above technical solution, further, the first exhaust air branch pipe is provided with a rotary fan; the fresh air branch pipe is provided with a rotary fan.

[0014] In the above technical solution, further, the recovery pipeline also includes a filtering device;

[0015] The filtering device is installed at the air inlet end of the fresh air main duct.

[0016] In the above technical solution, further, the first preset number of ovens near the head end of the coating machine are head ovens, and the head ovens are provided with a second exhaust branch pipe and a fresh air inlet pipe, and the second exhaust branch pipe is connected to the exhaust main air duct;

[0017] The fresh air inlet pipe is provided with a filtering device to allow the filtered ambient air from the outer peripheral area of ​​the oven to enter the head oven.

[0018] In the above technical solution, further, the second preset number of ovens near the tail end of the coating machine is a tail oven, and the tail oven is provided with a second exhaust branch pipe and a fresh air inlet pipe, and the second exhaust branch pipe is connected to the exhaust main air duct;

[0019] The fresh air inlet pipe is provided with a filtering device to allow the filtered ambient air from the outer peripheral area of ​​the oven to enter the tail oven.

[0020] In the above technical solution, further, the second exhaust branch pipe is provided with a rotary fan; the fresh air inlet pipe is provided with a rotary fan.

[0021] In the above technical solution, further, the first clean fresh air bin and the second clean fresh air bin are provided with a dehumidifier.

[0022] The present application also provides a coating machine, comprising the oven pipeline system described in the above solution.

[0023] Compared with the prior art, the beneficial effects of this application are:

[0024] The oven piping system provided by the present application can convert the high-temperature non-clean ambient air in the oven area into clean high-temperature air by setting up a fresh air supply pipe to supply fresh air to the oven, thereby reducing the air volume input into the oven from the second clean fresh air bin and reducing the energy consumption of the dehumidifier. The high-temperature ambient air in the oven area is extracted and used in the oven, which can reduce the ambient temperature in the oven area, increase the service life of the electrical components on the oven, and reduce the energy consumption of the exhaust fan and fresh air fan on the oven.

[0025] The present application also provides a coating machine, including the oven pipeline system described in the above solution. Based on the above analysis, it can be seen that the coating machine also has the above beneficial effects, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present application 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of the structure of the oven piping system provided in this application.

[0028] In the figure: 101-first clean fresh air bin; 102-second clean fresh air bin; 103-fresh air supply duct; 104-first negative pressure bin; 105-second negative pressure bin; 106-filtering device; 107-rotor fan; 108-exhaust main air duct; 109-fresh air main air duct; 110-heat exchanger; 111-first exhaust branch pipe; 112-fresh air branch pipe; 113-head oven; 114-second exhaust branch pipe; 115-fresh air inlet duct; 116-rear oven; 117-oven. DETAILED DESCRIPTION

[0029] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0030] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] Embodiment 1

[0033] The oven piping system provided in the present application is used for a coating machine, and the oven piping system includes a fresh air replenishing mechanism and a plurality of ovens 117 connected in sequence.

[0034] In the prior art, the fresh air replenishment mechanism includes a first clean fresh air bin 101 and a second clean fresh air bin 102. The oven 117 at the head end of the coating machine is connected to the first clean fresh air bin 101 through the first negative pressure bin 104, and the oven 117 at the tail end of the coating machine is connected to the second clean fresh air bin 102 through the second negative pressure bin 105.

[0035] Specifically, during the drying process of the electrode sheet in the oven 117 of the coater, the operating principle of the oven 117 is as follows: In order to ensure that the NMP gas and water vapor generated during the drying process can be discharged from the outside of the oven 117, when debugging the parameters, the exhaust volume of each oven 117 needs to be greater than the fresh air volume. Therefore, the inside of the oven 117 will be in a negative pressure state, and the oven 117 in a negative pressure state will draw fresh air from the head and tail of the coater into the oven 117 at the head end and the oven 117 at the tail end of the coater.

[0036] Specifically, a first clean fresh air bin 101 is arranged at the head end of the coating machine, and the first clean fresh air bin 101 is provided with a dehumidifier. The first clean fresh air bin 101 can isolate a closed clean environment space at the head of the coating machine, and the oven 117 located at the head end of the coating machine can be connected with the first clean fresh air bin 101 through the first negative pressure bin 104. The first negative pressure bin 104 can draw low-temperature clean and dry air in the first clean fresh air bin 101 into the interior of the oven 117 to replenish air for the oven 117.

[0037] Similarly, a second clean fresh air bin 102 is arranged at the tail end of the coating machine, and the second clean fresh air bin 102 is provided with a dehumidifier. The second clean fresh air bin 102 can isolate a closed clean environment space at the tail of the machine, and the oven 117 located at the tail end of the coating machine can be connected with the second clean fresh air bin 102 through the second negative pressure bin 105. The second negative pressure bin 105 can draw the low-temperature clean dry air in the second clean fresh air bin 102 into the interior of the oven 117 to replenish the air for the oven 117.

[0038] However, the above process will increase the energy consumption of the dehumidifiers installed in the first clean fresh air bin 101 and the second clean fresh air bin 102.

[0039] See also Figure 1 As shown, further, the present application also provides a fresh air supply duct 103, specifically, the first negative pressure chamber 104 and / or the second negative pressure chamber 105 are connected with a fresh air supply duct 103; the fresh air supply duct 103 is connected to the peripheral area of ​​the oven 117, and the fresh air supply duct 103 is provided with a filtering device 106 to allow the filtered ambient air in the peripheral area of ​​the oven 117 to enter the corresponding first negative pressure chamber 104 or the second negative pressure chamber 105.

[0040] Since the environment around the oven 117 is a non-clean environment, in order to ensure that the non-clean environment is isolated from the clean environment of the head and tail, the entire oven 117 area is also isolated into a closed environmental space. Since the coating machine oven 117 is a steam heating device, the operation of the steam high-temperature equipment in a closed environment will cause a high-temperature and dry environment in the area around the oven 117. During the actual production process on site, the ambient temperature of the oven 117 area can be as high as about 70 degrees. The present application can use the high-temperature environment around the oven 117 to replenish air for the oven 117 and increase the source of replenishment air.

[0041] Specifically, the first negative pressure chamber 104 at the head of the machine is connected to the fresh air supply pipe 103, and the fresh air supply pipe 103 is provided with a filter device 106. During the production process of the coating machine, the fresh air supply pipe 103 can convert the high-temperature non-clean environment wind in the oven 117 area into clean high-temperature wind, and supply fresh air to the oven 117, which can reduce the air volume input to the oven 117 by the first clean fresh air chamber 101, and reduce the energy consumption of the dehumidifier. Similarly, the second negative pressure chamber 105 at the tail of the machine is connected to the fresh air supply pipe 103, and the fresh air supply pipe 103 is provided with a filter device 106. During the production process of the coating machine, the fresh air supply pipe 103 can convert the high-temperature non-clean environment wind in the oven 117 area into clean high-temperature wind, and supply fresh air to the oven 117, which can reduce the air volume input to the oven 117 by the second clean fresh air chamber 102, and reduce the energy consumption of the dehumidifier.

[0042] Furthermore, the high-temperature ambient air in the oven 117 area is extracted and used in the oven 117 , which can reduce the ambient temperature in the oven 117 area, increase the service life of the electrical components on the oven 117 , and reduce the energy consumption of the exhaust fan and the fresh air fan on the oven 117 .

[0043] In an optional scheme of this embodiment, the fresh air supply duct 103 includes an air duct main body and a rotary fan 107; the first negative pressure chamber 104 and / or the second negative pressure chamber 105 are connected to the air outlet end of the corresponding air duct main body, and a filter device 106 is installed at the air inlet end of the air duct main body; the rotary fan 107 is installed between the filter device 106 and the air outlet end of the air duct main body to accelerate the gas flow rate, so that fresh air can be replenished for the oven 117 in time.

[0044] In an optional scheme of this embodiment, the oven piping system also includes a recovery pipeline; the recovery pipeline includes an exhaust main air duct 108, a fresh air main air duct 109 and a heat exchanger 110, the exhaust main air duct 108 and the fresh air main air duct 109 are both connected to the heat exchanger 110, and the gas in the exhaust main air duct 108 exchanges heat with the gas in the fresh air main air duct 109 through the heat exchanger 110.

[0045] The oven 117 located in the middle of the coating machine is provided with a first exhaust branch pipe 111 and a fresh air branch pipe 112. The first exhaust branch pipe 111 is connected to the exhaust main air pipe 108, and the fresh air branch pipe 112 is connected to the fresh air main air pipe 109. Preferably, the first exhaust branch pipe 111 is provided with a rotary fan 107 to speed up the exhaust speed of the oven 117; the fresh air branch pipe 112 is provided with a rotary fan 107 to speed up the speed of fresh air entering the oven 117.

[0046] In this embodiment, the oven 117 located in the middle of the coater is connected to the exhaust main air duct 108 through the first exhaust branch pipe 111, and is connected to the fresh air main air duct 109 through the fresh air branch pipe 112. During the production process, the high-temperature exhaust gas containing NMP and water vapor discharged from the oven 117 enters the exhaust main air duct 108, and after passing through the heat exchanger 110, the heat is absorbed by the fresh air in the fresh air main air duct 109. The heated fresh air in the fresh air main air duct 109 enters each oven 117 from each fresh air branch pipe 112 to dry the electrode, and the heat of the exhaust gas is recovered in a continuous cycle to reduce energy consumption.

[0047] In the optional solution of this embodiment, the recovery pipeline further includes a filter device 106; the filter device 106 is installed at the air inlet end of the fresh air main air duct 109. During the production process, the high-temperature waste gas containing NMP and water vapor discharged from the oven 117 enters the exhaust main air duct 108, and the outside air enters the fresh air main air duct 109 after being filtered by the filter device 106, and the waste gas of the exhaust main air duct 108 and the clean air of the fresh air main air duct 109 are heat-exchanged by the heat exchanger 110, so that the clean air of the fresh air main air duct 109 is heated, and the fresh air heated in the fresh air main air duct 109 enters each oven 117 from each fresh air branch pipe 112 to realize the high-temperature fresh air replenishment.

[0048] Embodiment 2

[0049] The oven piping system in the second embodiment is an improvement on the above embodiment, and the technical contents disclosed in the above embodiment will not be described repeatedly, and the contents disclosed in the above embodiment also belong to the contents disclosed in the second embodiment.

[0050] In an optional scheme of this embodiment, a first preset number of ovens 117 near the head end of the coater are head ovens 113, and the head ovens 113 are provided with a second exhaust branch pipe 114 and a fresh air inlet pipe 115, and the second exhaust branch pipe 114 is connected to the exhaust main air duct 108; the fresh air inlet pipe 115 is provided with a filtering device 106 to allow the ambient air in the peripheral area of ​​the ovens 117 to enter the head oven 113 after filtering.

[0051] In this embodiment, if Figure 1 As shown, unlike the oven 117 in the middle, which inputs a large amount of high-temperature fresh air through the fresh air main duct 109 and the fresh air branch duct 112 to dry the electrode in the oven 117, for the two head ovens 113 near the head end of the coating machine, the high-temperature dry air in the surrounding area of ​​the oven 117 can be filtered and input into the head oven 113 through the fresh air inlet duct 115, and the fresh air main duct 109 is not required to input high-temperature fresh air to the head oven 113, which reduces the energy consumption of the recovery pipeline. However, the high-temperature exhaust gas generated by the head oven 113 is still discharged into the exhaust main duct 108 through the second exhaust branch duct 114, which can recover the waste heat of the high-temperature exhaust gas and save energy.

[0052] In an optional scheme of this embodiment, the second preset number of ovens 117 near the tail end of the coater is the tail oven 116, and the tail oven 116 is provided with a second exhaust branch pipe 114 and a fresh air inlet pipe 115, and the second exhaust branch pipe 114 is connected to the exhaust main air duct 108; the fresh air inlet pipe 115 is provided with a filtering device 106 to allow the ambient air in the peripheral area of ​​the oven 117 to enter the tail oven 116 after filtering.

[0053] In this embodiment, if Figure 1 As shown, unlike the oven 117 in the middle, which inputs a large amount of high-temperature fresh air through the fresh air main duct 109 and the fresh air branch 112 to dry the electrode in the oven 117, for the two tail ovens 116 near the tail end of the coating machine, the high-temperature dry air in the surrounding area of ​​the oven 117 can be filtered and input into the tail oven 116 through the fresh air inlet duct 115, and the fresh air main duct 109 is not required to input high-temperature fresh air to the tail oven 116, which reduces the energy consumption of the recovery pipeline. However, the high-temperature exhaust gas generated by the tail oven 116 is still discharged into the exhaust main duct 108 through the second exhaust branch 114, which can recover the waste heat of the high-temperature exhaust gas and save energy.

[0054] In addition, by extracting the high-temperature ambient air in the oven 117 area into the oven 117 for use, the ambient temperature in the oven 117 area can be lowered, the service life of the electrical components on the oven 117 can be increased, and the energy consumption of the exhaust fan and the fresh air fan on the oven 117 can be reduced.

[0055] In an optional solution of this embodiment, the second exhaust branch pipe 114 is provided with a rotary fan 107 to accelerate the exhaust speed of the oven 117; the fresh air inlet pipe 115 is provided with a rotary fan 107 to accelerate the speed of fresh air entering the oven 117.

[0056] Embodiment 3

[0057] Embodiment 3 of the present application provides a coating machine, including the oven piping system of any of the above embodiments, and thus has all the beneficial technical effects of the oven piping system of any of the above embodiments, which will not be described in detail herein.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application. In addition, a person skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments means being within the scope of the present application and forming different embodiments.

Claims

1. An oven piping system for a coating machine, characterized in that: The oven pipeline system comprises a fresh air supply mechanism and multiple ovens (117) connected in sequence; The fresh air replenishment mechanism comprises a first clean fresh air bin (101), a second clean fresh air bin (102) and a fresh air replenishment pipe (103); the oven (117) located at the head end of the coating machine is connected to the first clean fresh air bin (101) via a first negative pressure bin (104), and the oven (117) located at the tail end of the coating machine is connected to the second clean fresh air bin (102) via a second negative pressure bin (105); The first negative pressure chamber (104) and / or the second negative pressure chamber (105) are connected to the fresh air supply duct (103); the fresh air supply duct (103) is connected to the peripheral area of ​​the oven (117), and the fresh air supply duct (103) is provided with a filtering device (106) so that the ambient air in the peripheral area of ​​the oven (117) can enter the corresponding first negative pressure chamber (104) or the second negative pressure chamber (105) after filtering.

2. The oven piping system according to claim 1, characterized in that: The fresh air supply duct (103) comprises an air duct body and a rotary fan (107); The first negative pressure chamber (104) and / or the second negative pressure chamber (105) are connected to the air outlet end of the corresponding air duct body, and the air inlet end of the air duct body is equipped with the filtering device (106); The rotary fan (107) is installed between the filter device (106) and the air outlet end of the air duct body.

3. The oven piping system according to claim 1, characterized in that: It also includes a recovery line; The recovery pipeline comprises an exhaust main air duct (108), a fresh air main air duct (109) and a heat exchanger (110); the exhaust main air duct (108) and the fresh air main air duct (109) are both in communication with the heat exchanger (110); the gas in the exhaust main air duct (108) exchanges heat with the gas in the fresh air main air duct (109) through the heat exchanger (110); The oven (117) located in the middle of the coating machine is provided with a first exhaust branch pipe (111) and a fresh air branch pipe (112); the first exhaust branch pipe (111) is connected to the exhaust main air pipe (108); and the fresh air branch pipe (112) is connected to the fresh air main air pipe (109).

4. The oven piping system according to claim 3, characterized in that: The first exhaust air branch pipe (111) is provided with a rotary fan (107); and the fresh air branch pipe (112) is provided with a rotary fan (107).

5. The oven piping system according to claim 3, characterized in that: The recovery pipeline also includes a filtering device (106); The filtering device (106) is installed at the air inlet end of the fresh air main duct (109).

6. The oven piping system according to claim 3, characterized in that: A first preset number of ovens (117) near the head end of the coating machine are head ovens (113), and the head ovens (113) are provided with a second exhaust branch pipe (114) and a fresh air inlet pipe (115), and the second exhaust branch pipe (114) is connected to the exhaust main air pipe (108); The fresh air inlet pipe (115) is provided with a filtering device (106) so as to allow the filtered ambient air in the peripheral area of ​​the oven (117) to enter the head oven (113).

7. The oven piping system according to claim 6, characterized in that: The second preset number of ovens (117) near the tail end of the coating machine is a tail oven (116), and the tail oven (116) is provided with a second exhaust branch pipe (114) and a fresh air inlet pipe (115), and the second exhaust branch pipe (114) is connected to the exhaust main air pipe (108); The fresh air inlet pipe (115) is provided with a filtering device (106) so as to allow the filtered ambient air in the peripheral area of ​​the oven (117) to enter the tail oven (116).

8. The oven piping system according to claim 7, characterized in that: The second air exhaust branch pipe (114) is provided with a rotary fan (107); and the fresh air inlet pipe (115) is provided with a rotary fan (107).

9. The oven piping system according to claim 1, characterized in that: The first clean fresh air bin (101) and the second clean fresh air bin (102) are provided with a dehumidifier.

10. A coating machine, characterized in that: The invention comprises the oven piping system as claimed in any one of claims 1 to 9.

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