Spinning coating system

Abstract

The utility model discloses a spinning coating system, which comprises a feeding device, a spraying device, a spraying device and a spraying device, and is characterized in that the feeding device is used for storing coating; the coating device comprises a spraying mechanism and a loading mechanism, the loading mechanism is used for bearing a target workpiece and driving the target workpiece to rotate, one end of the spraying mechanism communicates with the feeding device, and the other end of the spraying mechanism is used for spraying the target workpiece; the dust collection device comprises a dust collection cover and a dust collection power device, the dust collection cover is arranged towards the loading mechanism, and the dust collection power device is communicated with the dust collection cover and used for driving the dust collection cover to suck dust fog generated by the coating device in the coating process. The dust collecting cover is arranged near the loading mechanism, so that dust fog generated during working can be quickly absorbed by the dust collecting cover, the working environment is kept clean, and pollution to surrounding equipment and personnel is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery coating systems, in particular to a spin spray coating system. Background Art

[0002] During the manufacturing process of lithium-ion battery pole pieces, a conductive agent is typically applied to both sides of the current collector to improve adhesion between the coating and the current collector foil and reduce resistance. Lithium battery factories typically use a coating machine for this process. This machine is specialized for applying a quantitative layer of a specific functional coating to the surface of a rolled substrate.

[0003] When the existing rotary spray coating machine is performing the coating operation, the nozzle sprays slurry onto the high-speed rotating workpiece, thereby evenly coating the slurry on the workpiece. This process generates a large amount of dust mist, causing the dust particle size in the air to exceed the standard, resulting in serious dust mist pollution and increasing the risk of occupational diseases caused by inhalation of dust mist for workers. Utility Model Content

[0004] The main purpose of the utility model is to provide a rotary spray coating system, aiming to solve the problem that the existing rotary spray coating machine is prone to dust and mist pollution.

[0005] To achieve the above objectives, the present invention provides a rotary spray coating system, which includes:

[0006] A feeding device, wherein the feeding device is used to store the coating;

[0007] A coating device, comprising a spraying mechanism and a loading mechanism, wherein the loading mechanism is used to carry a target workpiece and drive the target workpiece to rotate, one end of the spraying mechanism is connected to the feeding device, and the other end of the spraying mechanism is used to spray the target workpiece;

[0008] The dust collecting device includes a dust collecting hood and a dust suction power device. The dust collecting hood is arranged toward the loading mechanism. The dust suction power device is connected to the dust collecting hood and is used to drive the dust collecting hood to suck the dust mist generated by the coating device during the coating process.

[0009] In some embodiments, the dust collecting device further includes an exhaust pipe, one end of the exhaust pipe is connected to the dust collecting hood, and the other end of the exhaust pipe is connected to the feeding device, and the dust suction power device is connected to the exhaust pipe, for driving the dust collecting hood to suck the dust mist and transport the dust mist to the feeding device through the exhaust pipe.

[0010] In some embodiments, the dust suction power device includes at least two fans spaced apart along the exhaust pipe, and both fans are connected to the exhaust pipe.

[0011] In some embodiments, each of the fans includes an air inlet and an air outlet, and the air outlet of each of the fans is connected to a first filter element, which is used to filter dust and mist discharged from the fan to the feeding device.

[0012] In some embodiments, the discharge pipeline is provided with an injection pipe inclined downward at one end close to the feeding device, and the outlet of the injection pipe is located in the feeding device for guiding the dust mist transported by the discharge pipeline into the feeding device.

[0013] In some embodiments, the feeding device is provided with a second filter element at an outlet corresponding to the injection pipe, and the second filter element is used to filter the dust mist flowing out of the injection pipe.

[0014] In some embodiments, there are multiple dust collecting hoods and multiple loading mechanisms, and the multiple dust collecting hoods are connected to the driving component, and each dust collecting hood is correspondingly arranged above one of the loading mechanisms.

[0015] In some embodiments, the dust collecting device further comprises a dust cover, the dust cover is arranged outside the loading mechanism, and the dust collecting cover is arranged inside the dust cover.

[0016] In some embodiments, the loading mechanism includes a turntable and a motor connected to the turntable, the turntable is used to carry the target workpiece, and the motor is used to drive the turntable to rotate;

[0017] The spraying mechanism includes a jet pipeline and a rotary nozzle connected to the jet pipeline, the rotary nozzle is arranged corresponding to the turntable, one end of the jet pipeline is connected to the feeding device, and the other end of the jet pipeline is connected to the discharge pipeline, which is used to recover the paint flowing out of the jet pipeline through the discharge pipeline.

[0018] In some embodiments, the feeding device is provided with a feed port and a discharge port, the discharge port is connected to the coating device, and a first rotor pump and a first solenoid valve are sequentially provided between the discharge port and the coating device, the first rotor pump is used to control the flow rate of the coating to the coating device, and the first solenoid valve is used to control the opening and closing of the discharge port;

[0019] The discharge pipeline is connected to the feed port, and a second rotor pump and a second solenoid valve are sequentially arranged between the discharge pipeline and the feed port. The second rotor pump is used to control the flow of the paint through the discharge pipeline to the feed port, and the second solenoid valve is used to control the switch of the feed port.

[0020] In some embodiments, the spin-spray coating system further includes a PLC controller electrically connected to the first rotor pump, the first solenoid valve, the second rotor pump, and the second solenoid valve.

[0021] The technical solution of the utility model carries the target workpiece through a loading mechanism and arranges the dust collecting hood near the loading mechanism, so that when the coating device performs rotational spraying on the target workpiece, the dust mist formed by the paint particles generated can be quickly absorbed by the dust collecting hood, thereby keeping the working environment clean, reducing pollution to surrounding equipment and personnel, and at the same time reducing the impact of dust mist on equipment and target workpiece, thereby improving coating quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of an embodiment of the rotary spray coating system of the present invention.

[0023] Reference numerals:

[0024] 100. Feeding device; 110. Second filter element; 120. First rotor pump; 130. First solenoid valve; 140. Second rotor pump; 150. Second solenoid valve; 160. PLC controller; 200. Coating device; 210. Spraying mechanism; 211. Jet pipeline; 212. Rotary nozzle; 220. Loading mechanism; 221. Turntable; 300. Dust collecting device; 310. Dust collecting hood; 320. Dust collecting power device; 321. Air inlet; 322. Air outlet; 323. First filter element; 330. Discharge pipeline; 331. Injection pipe; 340. Dust cover. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the schemes in the embodiments of the present invention. Obviously, the embodiments described are only 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 ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element.

[0028] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0029] The utility model proposes a rotary spray coating system, referring to Figure 1 , the spin spray coating system includes:

[0030] The feeding device 100 is used to store the coating material;

[0031] The coating device 200 includes a spraying mechanism 210 and a loading mechanism 220. The loading mechanism 220 is used to carry the target workpiece and drive the target workpiece to rotate. One end of the spraying mechanism 210 is connected to the feeding device 100, and the other end of the spraying mechanism 210 is used to spray the target workpiece;

[0032] The dust collecting device 300 includes a dust collecting hood 310 and a dust suction power device 320. The dust collecting hood 310 is arranged toward the loading mechanism 220. The dust suction power device 320 is connected to the dust collecting hood 310 and is used to drive the dust collecting hood 310 to suck the dust mist generated by the coating device 200 during the coating process.

[0033] During specific use, the target workpiece is placed on the loading mechanism 220, which drives the target workpiece to rotate. The spraying mechanism 210 is then controlled to spray the rotating target workpiece. Because spraying a high-speed rotating target workpiece easily generates a large amount of dust mist, the dust collection power device 320 is activated to generate negative pressure at the opening of the dust collection hood 310, collecting the dust mist through the dust collection hood 310. The feeding device 100, coating device 200, and dust collection device 300 can be controlled by a control device. The collected dust mist can also be transported to a suitable storage device or processing device via a transportation pipeline.

[0034] The feeding device 100 is a device for storing paint, which is used to deliver slurry to the spraying mechanism 210 in the coating device 200. The shape and size of the feeding device 100 can be set as needed. Exemplarily, the feeding device 100 can be a cylindrical metal storage tank, which can prevent the feeding device 100 from being corroded by the paint through the stability of the metal, and the cylindrical shape is also easy to carry and install. It is understandable that as the paint is constantly used, the paint in the feeding device 100 will continue to decrease. Therefore, the paint can be injected into the feeding device 100 manually or automatically by opening a liquid injection port on the feeding device 100. Furthermore, a stirring mechanism can be set in the feeding device 100 to continuously stir the paint in the feeding device 100 so that the paint remains in a uniform state and prevents sedimentation.

[0035] The spray mechanism 210 in the coating device 200 is used to evenly spray the coating delivered by the feeding device 100 onto the surface of the target workpiece. It may be a spray gun, nozzle, atomizer, or other structure. The spray angle, pressure, coating flow rate, and other parameters of the spray mechanism 210 can be adjusted according to the type, shape, and size of the target workpiece to ensure coating quality. The loading mechanism 220 is responsible for carrying the target workpiece and rotating it during the coating process to ensure that all parts of the target workpiece surface are evenly sprayed, avoiding local over-coating or under-coating.

[0036] The dust hood 310 in the dust collecting device 300 is generally funnel-shaped, and the opening with a larger diameter faces the loading mechanism 220 to surround the spraying area as much as possible, thereby maximizing the collection of dust mist generated during spraying. It is understandable that the dust hood 310 can also be of other shapes, and the size of the dust hood 310 can be set according to the size of the target workpiece, and the present invention does not impose any restrictions on this. The dust suction power device 320 can be a fan or a vacuum pump. When the dust suction power device 320 is started, it forms a negative pressure inside the dust hood 310, so that the dust mist generated during the spraying process is quickly sucked into the dust hood 310 and transported to subsequent processing equipment.

[0037] The utility model carries the target workpiece through the loading mechanism 220 and arranges the dust collecting hood 310 near the loading mechanism 220, so that when the coating device 200 performs rotational spraying on the target workpiece, the dust mist formed by the paint particles generated can be quickly absorbed by the dust collecting hood 310, thereby keeping the working environment clean, reducing pollution to surrounding equipment and personnel, and at the same time reducing the impact of dust mist on equipment and target workpieces, thereby improving coating quality.

[0038] like Figure 1As shown, in some embodiments, the dust collecting device 300 also includes an exhaust pipe 330, one end of the exhaust pipe 330 is connected to the dust collecting hood 310, and the other end of the exhaust pipe 330 is connected to the feeding device 100, and the dust suction power device 320 is connected to the exhaust pipe 330, which is used to drive the dust collecting hood 310 to suck the dust mist and transport the dust mist to the feeding device 100 through the exhaust pipe 330.

[0039] Since the dust mist is mainly composed of fine paint particles, in this embodiment, the dust hood 310 is connected to the feeding device 100 by setting up a discharge pipe 330. After the dust hood 310 collects the dust mist near the loading mechanism 220 through the dust suction power device 320, the dust mist can flow along the discharge pipe 330 into the feeding device 100, completing the recycling of the paint particles, improving the utilization rate of the paint and saving material costs. The dust suction power device 320 is usually set in the discharge pipe 330 and together with the discharge pipe 330, it forms a dust mist recovery channel. For example, if the dust suction power device 320 is a power pump, the inlet and outlet ends of the power pump are connected to the discharge pipe 330 to complete the suction and recovery of the dust mist. It can be understood that the length, size and setting route of the discharge pipe 330 can be selected according to actual conditions, and the present invention does not impose any restrictions on this.

[0040] like Figure 1 As shown, in some embodiments, the dust collection power device 320 includes at least two fans spaced apart along the exhaust pipe 330 , and both fans are connected to the exhaust pipe 330 .

[0041] At least two fans are set on the exhaust pipe 330 to ensure that there is sufficient suction force at the dust hood 310 to collect dust mist and provide power to transport the dust mist to the feeding device 100. The arrangement of the fans can be selected according to actual needs. Specifically, taking two fans as an example, one of the fans can be set on the side close to the dust hood 310, usually installed at the initial part of the exhaust pipe 330 after it extends from the dust hood 310, to provide sufficient suction force so that the dust mist just captured by the dust hood 310 can smoothly enter the exhaust pipe 330 and move toward the feeding device 100. The other fan can be set in the middle of the exhaust pipe 330 or on the side close to the feeding device 100 to enhance the transportation efficiency of the dust mist and ensure that even if the exhaust pipe 330 is long, the dust mist will not be retained due to excessive distance or increased pipe resistance.

[0042] The spacing and coordination of the two fans ensures uniform pressure distribution throughout discharge pipeline 330, preventing system efficiency degradation caused by overloading a single fan. Furthermore, the distributed fan configuration effectively addresses long or complex discharge pipelines 330, maintaining stability and continuity in the dust and mist transport process and improving dust and mist transport efficiency.

[0043] like Figure 1 As shown, in some embodiments, each fan includes an air inlet 321 and an air outlet 322 , and the air outlet 322 of each fan is connected to a first filter element 323 , which is used to filter dust and mist discharged from the fan to the feeding device 100 .

[0044] The first filter element 323 can be a multi-layer filter, an electrostatic filter plate, or other filtering device. Connecting the first filter element 323 to the air outlet 322 of the fan ensures that all dust and mist discharged from the fan are filtered by the first filter element 323, preventing impurities in the dust and mist from being transported along the discharge pipe 330 to the feeding device 100. The first filter element 323 can be directly installed at the air outlet 322 of the fan, or it can be connected to the air outlet 322 via a pipe, which is not limited in the present invention.

[0045] like Figure 1 As shown, in some embodiments, the discharge pipeline 330 is provided with an injection pipe 331 inclined downward at one end close to the feeding device 100, and the outlet of the injection pipe 331 is located inside the feeding device 100, which is used to guide the dust mist transported by the discharge pipeline 330 into the feeding device 100.

[0046] The injection pipe 331 is typically configured as an extension of the discharge pipe 330. Its shape and size can be adjusted based on the diameter of the discharge pipe 330 and the inlet structure of the feeding device 100, allowing the dust mist to be smoothly injected into the feeding device 100 and reducing the probability of leakage. The injection pipe 331 is tilted downward to prevent the dust mist from being retained at the end of the injection pipe 331, thereby improving the conveying efficiency.

[0047] like Figure 1 As shown, in some embodiments, a second filter element 110 is provided at the outlet of the feeding device 100 corresponding to the injection pipe 331 , and the second filter element 110 is used to filter the dust mist flowing out of the injection pipe 331 .

[0048] Similar to the first filter element 323, the second filter element 110 can also be a multi-layer filter mesh, an electrostatic filter plate or other filtering device. The second filter element 110 is set near the outlet of the injection pipe 331, or directly connected to the injection pipe 331, so that the dust mist discharged from the injection port is filtered by the second filter element 110, further reducing impurities in the dust mist, thereby improving the coating quality.

[0049] like Figure 1 As shown, in some embodiments, there are multiple dust hoods 310 and loading mechanisms 220. The multiple dust hoods 310 are all connected to the drive component, and each dust hood 310 is respectively arranged above a loading mechanism 220. The multiple loading mechanisms 220 are used to carry multiple target workpieces, which facilitates the spin spray coating system to complete the spraying operation of multiple target workpieces simultaneously. Corresponding to the multiple loading mechanisms 220, multiple dust hoods 310 are provided in this embodiment, so that each dust hood 310 can specifically collect the dust mist generated by the corresponding loading mechanism 220, thereby improving the collection efficiency and reducing the probability of dust mist diffusion.

[0050] like Figure 1 As shown, in some embodiments, the dust collecting device 300 further includes a dust cover 340 , which is disposed outside the loading mechanism 220 , and the dust collecting cover 310 is disposed inside the dust cover 340 .

[0051] The dust cover 340 can be a closed or semi-closed shell structure, and its material is usually metal, plastic or other corrosion-resistant materials. The dust cover 340 can be fixed to a suitable mounting surface in a detachable manner, such as bolts or clips, for easy maintenance and cleaning, or it can be fixed to a suitable mounting surface in a non-detachable manner, such as welding or bonding, for a more secure connection. The size and shape of the dust cover 340 are set according to the shape and size of the loading mechanism 220 and the dust collecting hood 310, and the present invention does not impose any restrictions on this. By enclosing the loading mechanism 220 and the dust collecting hood 310 inside the dust cover 340, dust and mist can be effectively prevented from escaping into the external environment during the collection process, thereby improving the efficiency of dust and mist collection and keeping the work area clean and safe.

[0052] like Figure 1 As shown, in some embodiments, the loading mechanism 220 includes a turntable 221 and a motor connected to the turntable 221 , the turntable 221 is used to carry the target workpiece, and the motor is used to drive the turntable 221 to rotate;

[0053] The spraying mechanism 210 includes a jet pipeline 211 and a rotary nozzle 212 connected to the jet pipeline 211. The rotary nozzle 212 is arranged corresponding to the turntable 221. One end of the jet pipeline 211 is connected to the feeding device 100, and the other end of the jet pipeline 211 is connected to the discharge pipeline 330, which is used to recover the paint flowing out of the jet pipeline 211 through the discharge pipeline 330.

[0054] During specific use, the target workpiece is first placed on the turntable 221. The motor then drives the turntable 221 and the target workpiece on the turntable 221 to rotate together. Then, the spin nozzle 212 applies paint to the rotating target workpiece, completing the coating operation on the target workpiece. The spin nozzle 212 is connected to the feeding device 100 through the jet pipe 211 to apply the paint in the feeding device 100 to the target workpiece. The other end of the jet pipe 211 is connected to the discharge pipe 330, so that the feeding device 100, the jet pipe 211, and the discharge pipe 330 form a loop, ensuring that the paint is fully utilized during the spraying process while preventing the paint in the jet pipe 211 from accumulating.

[0055] like Figure 1 As shown, in some embodiments, the feeding device 100 is provided with a feed port and a discharge port, the discharge port is connected to the coating device 200, and a first rotor pump 120 and a first solenoid valve 130 are sequentially provided between the discharge port and the coating device 200. The first rotor pump 120 is used to control the flow rate of the coating to the coating device 200, and the first solenoid valve 130 is used to control the opening and closing of the discharge port;

[0056] The discharge pipe 330 is connected to the feed port, and a second rotor pump 140 and a second solenoid valve 150 are sequentially arranged between the discharge pipe 330 and the feed port. The second rotor pump 140 is used to control the flow of paint through the discharge pipe 330 to the feed port, and the second solenoid valve 150 is used to control the switch of the feed port.

[0057] By adjusting the rotational speed of the first rotor pump 120, the speed and flow rate of paint delivered to the coating device 200 can be flexibly adjusted to meet the spraying requirements under different process conditions. The first solenoid valve 130 can be controlled to open and close via electrical signals, thereby determining whether paint flows from the discharge port to the coating device 200. This enables precise control of paint supply, ensuring that paint flows into the coating device 200 only when needed, and avoiding unnecessary waste. The functions of the second rotor pump 140 and the second solenoid valve 150 are similar and will not be further described here.

[0058] like Figure 1 As shown, in some embodiments, the spin-spray coating system further includes a PLC controller 160 , which is electrically connected to the first rotor pump 120 , the first solenoid valve 130 , the second rotor pump 140 and the second solenoid valve 150 .

[0059] The PLC controller 160 can monitor the operating status of the spin-spray coating system in real time, including the rotational speed of the rotor pump and the switch status of the solenoid valve, and achieve precise control, thereby improving the operating efficiency and coating quality of the spin-spray coating system, greatly reducing manual intervention and operating errors, and improving reliability and safety.

[0060] The above description is only part or preferred embodiments of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect application in other related technical fields are included in the scope of protection of the present invention.

Claims

1. A spin spray coating system, characterized in that, include: A feeding device, wherein the feeding device is used to store the coating; A coating device, comprising a spraying mechanism and a loading mechanism, wherein the loading mechanism is used to carry a target workpiece and drive the target workpiece to rotate, one end of the spraying mechanism is connected to the feeding device, and the other end of the spraying mechanism is used to spray the target workpiece; The dust collecting device includes a dust collecting hood and a dust suction power device. The dust collecting hood is arranged toward the loading mechanism. The dust suction power device is connected to the dust collecting hood and is used to drive the dust collecting hood to suck the dust mist generated by the coating device during the coating process.

2. The spin spray coating system according to claim 1, characterized in that The dust collecting device also includes an exhaust pipe, one end of which is connected to the dust collecting hood, and the other end of which is connected to the feeding device. The dust suction power device is connected to the exhaust pipe, and is used to drive the dust collecting hood to suck the dust mist and transport the dust mist to the feeding device through the exhaust pipe.

3. The spin spray coating system according to claim 2, characterized in that: The dust collection power device includes at least two fans distributed at intervals along the discharge pipeline, and the fans are both connected to the discharge pipeline.

4. The spin spray coating system according to claim 3, characterized in that: Each of the fans includes an air inlet and an air outlet. The air outlet of each of the fans is connected to a first filter element, and the first filter element is used to filter the dust and mist discharged from the fan to the feeding device.

5. The spin spray coating system according to claim 2, characterized in that: The discharge pipeline is provided with an injection pipe inclined downward at one end close to the feeding device. The outlet of the injection pipe is located in the feeding device and is used to guide the dust mist transported by the discharge pipeline into the feeding device.

6. The spin spray coating system according to claim 5, characterized in that: The feeding device is provided with a second filter element at an outlet corresponding to the injection pipe, and the second filter element is used to filter the dust mist flowing out of the injection pipe.

7. The spin spray coating system according to any one of claims 1 to 6, characterized in that: There are multiple dust collecting hoods and multiple loading mechanisms. The multiple dust collecting hoods are all connected to the dust suction power device, and each dust collecting hood is correspondingly arranged above one loading mechanism.

8. The spin spray coating system according to any one of claims 1 to 6, characterized in that: The dust collecting device further comprises a dust cover, wherein the dust cover is arranged outside the loading mechanism, and the dust collecting cover is arranged inside the dust cover.

9. The spin spray coating system according to any one of claims 2 to 6, characterized in that: The loading mechanism includes a turntable and a motor connected to the turntable, the turntable is used to carry the target workpiece, and the motor is used to drive the turntable to rotate; The spraying mechanism includes a jet pipeline and a rotary nozzle connected to the jet pipeline, the rotary nozzle is arranged corresponding to the turntable, one end of the jet pipeline is connected to the feeding device, and the other end of the jet pipeline is connected to the discharge pipeline, which is used to recover the paint flowing out of the jet pipeline through the discharge pipeline.

10. The spin spray coating system according to any one of claims 2 to 6, characterized in that: The feeding device is provided with a feeding port and a discharging port, the discharging port is connected to the coating device, and a first rotor pump and a first solenoid valve are sequentially provided between the discharging port and the coating device, the first rotor pump is used to control the flow rate of the coating to the coating device, and the first solenoid valve is used to control the opening and closing of the discharging port; The discharge pipeline is connected to the feed port, and a second rotor pump and a second solenoid valve are sequentially arranged between the discharge pipeline and the feed port. The second rotor pump is used to control the flow of the paint through the discharge pipeline to the feed port, and the second solenoid valve is used to control the switch of the feed port.

11. The spin spray coating system according to claim 10, characterized in that: The spin-spray coating system further includes a PLC controller, which is electrically connected to the first rotor pump, the first solenoid valve, the second rotor pump, and the second solenoid valve.

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