Gear pump for automobile spraying system

By precisely adjusting the combination of the gear pump assembly and the IPS system, the problems of unstable flow and complex structure in traditional automotive painting systems have been solved, achieving high precision and corrosion resistance in fluid delivery, and improving painting quality and ease of equipment maintenance.

CN224200805UActive Publication Date: 2026-05-05ZAOYI PRECISION MASCH (NANJING) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZAOYI PRECISION MASCH (NANJING) CO LTD
Filing Date
2025-06-03
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

Traditional automotive painting systems suffer from problems such as unstable flow rate, inaccurate material dispensing, complex structure, and poor corrosion resistance of fluid transfer pumps, which affect painting quality and equipment maintenance difficulty, and limit the performance and market competitiveness of painting robots.

Method used

Employing a precision-adjustable gear pump assembly, including a rear plate, drive gear shaft, middle plate, screws, driven gear, drive gear, crescent pin, pump shaft, and parallel pin, it achieves automatic flow regulation through connection with the IPS system, ensuring precise flow control and sealing. It is also equipped with a cleaning adapter for internal cleaning, extending its service life.

Benefits of technology

It achieves high precision and stability in fluid delivery, improves coating quality, simplifies maintenance, and enhances the corrosion resistance and service life of the equipment.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224200805U_ABST
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Abstract

The utility model relates to the technical field of automobile spraying, in particular to a gear pump for an automobile spraying system, which comprises an accurate adjusting gear pump component, the accurate adjusting gear pump component comprises a rear plate, a driving gear shaft, a middle plate and a screw, and a driving gear is circumferentially and rotatably connected with the rear plate and is positioned at the lower part in the rear plate; the driving gear shaft and the rear plate are vertically arranged, the middle plate is arranged on the side, close to the driving gear shaft, of the rear plate, the screw penetrates through the rear plate, is detachably connected with the middle plate and is located on one side of the interior of the middle plate, and the screw is arranged on one side of the driving gear shaft. Therefore, the problems that in the prior art, a fluid conveying pump of an automobile spraying system is unstable in flow adjustment, inaccurate in material distribution, complex in structure and poor in corrosion resistance are effectively solved.
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Description

Technical Field

[0001] This utility model relates to the field of automotive painting technology, and in particular to a gear pump for automotive painting systems. Background Technology

[0002] In the automotive painting industry, the quality of the paint job directly affects the appearance and durability of a car.

[0003] In traditional spraying systems, fluid delivery pumps suffer from unstable flow rates and inaccurate dispensing, leading to defects such as uneven coating thickness and inconsistent color in automotive paint. In addition, traditional pumps are large and complex in structure, not only taking up space but also making maintenance difficult. Furthermore, their poor corrosion resistance makes them unsuitable for various fluid media such as paints, catalysts, and transparent coatings, which greatly limits the performance and market competitiveness of automotive spraying robots and makes it difficult to meet the high precision and high efficiency requirements of modern automotive spraying processes.

[0004] To address the aforementioned issues, we propose a gear pump for automotive painting systems. Utility Model Content

[0005] The purpose of this invention is to provide a gear pump for automotive painting systems, which solves the problems of unstable flow regulation, inaccurate dispensing, complex structure, and poor corrosion resistance of fluid transfer pumps in existing automotive painting systems.

[0006] To achieve the above objectives, this utility model employs a gear pump for an automotive painting system, comprising a precision-adjustable gear pump assembly. The precision-adjustable gear pump assembly includes a rear plate, a drive gear shaft, a middle plate, and a screw. The drive gear is rotatably connected to the rear plate and located inside and below the rear plate. The drive gear shaft is perpendicular to the rear plate. The middle plate is located on the side of the rear plate near the drive gear shaft. The screw passes through the rear plate and is detachably connected to the middle plate, located inside the middle plate, and is located on one side of the drive gear shaft.

[0007] The precision adjustment gear pump assembly further includes a driven gear and a driving gear. The driven gear is rotatably connected to the middle plate and is located inside the lower part of the middle plate. The driven gear is also detachably connected to the driving gear shaft and is located on the outer surface of the end of the driving gear shaft away from the rear plate. The driving gear is rotatably connected to the middle plate and is located inside the upper part of the middle plate. The driving gear is also meshed with the driven gear and is located above the driven gear.

[0008] The precision-adjusting gear pump assembly further includes a crescent pin and a pump shaft. The crescent pin is detachably connected to the drive gear and is located on one side of the inner center of the drive gear. The pump shaft is detachably connected to the crescent pin and is located on the side of the crescent pin away from the drive gear. The pump shaft is located at the inner center of the drive gear and is also perpendicular to the drive gear.

[0009] The precision-adjustable gear pump assembly further includes a parallel pin, which is detachably connected to the pump shaft and located on the inner side of the pump shaft away from the drive gear.

[0010] The precision-adjustable gear pump assembly also includes a front plate, which is detachably connected to the middle plate and located on the side of the middle plate away from the rear plate. The front plate is disposed on the outer surface of the pump shaft.

[0011] This utility model discloses a gear pump for an automotive painting system, comprising a precision-adjustable gear pump assembly. The assembly includes a rear plate, a drive gear shaft, a middle plate, and screws. The drive gear is rotatably connected to the rear plate and located inside and below the rear plate. The drive gear shaft is perpendicular to the rear plate. The middle plate is located on the side of the rear plate near the drive gear shaft. The screw passes through the rear plate and is detachably connected to the middle plate, located inside the middle plate and on one side of the drive gear shaft. By adding the precision-adjustable gear pump assembly, the problems of unstable flow regulation, inaccurate dispensing, complex structure, and poor corrosion resistance in existing automotive painting system fluid delivery pumps are effectively solved. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a front view of the entire utility model.

[0015] Figure 3 This is a schematic diagram of the overall structure of this utility model.

[0016] 101-Rear plate, 102-Drive gear shaft, 103-Middle plate, 104-Crescent pin, 105-Parallel pin, 106-Pump shaft, 107-Screw, 108-Driven gear, 109-Drive gear, 110-Front plate. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0018] Please see Figures 1-3 , Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 2 This is a front view of the entire utility model. Figure 3 This is a schematic diagram of the overall structure of this utility model.

[0019] This utility model provides a gear pump for an automotive painting system, including a precision-adjustable gear pump assembly. The precision-adjustable gear pump assembly includes a rear plate 101, a drive gear shaft 102, a middle plate 103, a screw 107, a driven gear 108, a drive gear 109, a crescent pin 104, a pump shaft 106, a parallel pin 105, and a front plate 110. This solution solves the problems of unstable flow regulation, inaccurate dispensing, complex structure, and poor corrosion resistance in existing fluid transfer pumps for automotive painting systems. It is understood that the aforementioned solution allows for the assembly of the gear pump during use. The gear pump is connected to the automotive painting system. Appropriate pipes are used to connect the fluid inlet and outlet of the gear pump to the paint storage tank, spray nozzles, and other equipment, ensuring a tight seal to prevent fluid leakage. An electric servo motor is connected to the pump shaft 106 to ensure stable power transmission. Simultaneously, the gear pump is connected to the IPS (Integrated Process System) to receive input signals from the system, enabling automatic flow regulation. Before formal use, the gear pump is tested by starting the automotive painting system and sending different flow regulation signals through the IPS system to observe the gear pump's operating status. Check the flow output to ensure the smooth rotation of components such as the drive gear shaft 102, the driven gear 108, and the drive gear 109, and to detect any abnormal noise or vibration. Simultaneously, use a flow detection device to monitor the output flow of the gear pump in real time to ensure accurate quantitative dispensing based on the input signal, meeting the high-precision requirements of fluid delivery in automotive painting processes. During automotive painting, the gear pump automatically adjusts its flow rate according to the instructions of the IPS system to stably deliver fluid media such as paint, catalyst, or transparent coating. Operators must monitor the operating parameters and status indicator lights of the gear pump in real time. If any abnormality is detected, the machine should be stopped immediately for inspection. When automotive painting is completed or the fluid medium needs to be changed, a cleaning adapter can be installed to clean the inside of the gear pump with a specific cleaning solution. During cleaning, follow the prescribed cleaning procedures and parameters to ensure that any residual fluid media inside the gear pump is thoroughly removed, preventing the mixing of different media from affecting the painting quality and extending the service life of the gear pump. After cleaning, inspect and maintain the gear pump, such as checking whether the connections of each component are loose and whether the lubrication is adequate, to ensure that the gear pump is in good operating condition and ready for the next operation.

[0020] In this specific embodiment, the drive gear 109 is rotatably connected to the rear plate 101 and is located inside the lower part of the rear plate 101. The drive gear shaft 102 is perpendicular to the rear plate 101. The middle plate 103 is located on the side of the rear plate 101 near the drive gear shaft 102. The screw 107 passes through the rear plate 101 and is detachably connected to the middle plate 103. The screw 107 is located inside the middle plate 103 and is located on the side of the drive gear shaft 102.

[0021] The driven gear 108 is rotatably connected to the middle plate 103 and located inside the lower part of the middle plate 103. The driven gear 108 is also detachably connected to the drive gear shaft 102 and located on the outer surface of the end of the drive gear shaft 102 away from the rear plate 101. The drive gear 109 is rotatably connected to the middle plate 103 and located inside the upper part of the middle plate 103. The drive gear 109 is also meshed with the driven gear 108 and located above the driven gear 108.

[0022] Secondly, the crescent pin 104 is detachably connected to the drive gear 109 and is located on one side of the inner center of the drive gear 109. The pump shaft 106 is detachably connected to the crescent pin 104 and is located on the side of the crescent pin 104 away from the drive gear 109. The pump shaft 106 is located at the inner center of the drive gear 109 and is also perpendicular to the drive gear 109.

[0023] Meanwhile, the parallel pin 105 is detachably connected to the pump shaft 106 and is located on the inner side of the pump shaft 106 away from the drive gear 109.

[0024] In addition, the front plate 110 is detachably connected to the middle plate 103 and is located on the side of the middle plate 103 away from the rear plate 101, and the front plate 110 is disposed on the outer surface of the pump shaft 106.

[0025] When using this invention, the assembled gear pump is connected to the automotive painting system. The fluid inlet and outlet of the gear pump are connected to the paint storage tank, spray nozzle, and other equipment via suitable pipes, ensuring a good seal to prevent fluid leakage. An electric servo motor is connected to the pump shaft 106 to ensure stable power transmission. Simultaneously, the gear pump is connected to the IPS (Integrated Process System) to receive input signals from the system, enabling automatic flow regulation. Before formal use, the gear pump is tested by starting the automotive painting system and sending different flow regulation signals through the IPS system. The operating status and flow output of the gear pump are observed. The smooth rotation of components such as the drive gear shaft 102, the driven gear 108, and the drive gear 109 is checked for any abnormal noise or vibration. Simultaneously, a flow detection device is used to monitor the output flow of the gear pump in real time to ensure it can... Precise quantitative dispensing is achieved based on input signals, meeting the high-precision requirements of fluid delivery in automotive painting processes. During automotive painting operations, the gear pump automatically adjusts the flow rate according to the instructions of the IPS system, stably delivering fluid media such as paint, catalyst, or transparent coating. Operators need to monitor the operating parameters and status indicator lights of the gear pump in real time. If any abnormality is found, the machine should be stopped and inspected immediately. When the automotive painting operation is completed or the fluid media needs to be changed, a cleaning adapter can be installed to clean the inside of the gear pump with a specific cleaning fluid. During cleaning, the operation should be carried out according to the prescribed cleaning procedures and parameters to ensure that the fluid media remaining inside the gear pump is completely removed, preventing the mixing of different media from affecting the painting quality and extending the service life of the gear pump. After cleaning, the gear pump should be inspected and maintained, such as checking whether the connections of each component are loose and whether the lubrication is good, to ensure that the gear pump is in good operating condition and ready for the next operation.

[0026] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A gear pump for an automotive painting system, characterized in that, The system includes a precision-adjustable gear pump assembly. The assembly comprises a rear plate, a drive gear shaft, a middle plate, and a screw. The drive gear is rotatably connected to the rear plate and located inside and below the rear plate. The drive gear shaft is perpendicular to the rear plate. The middle plate is located on the side of the rear plate near the drive gear shaft. The screw passes through the rear plate and is detachably connected to the middle plate, located inside the middle plate, and is also located on one side of the drive gear shaft. The precision-adjustable gear pump assembly further includes a driven gear and a controlled gear. The driven gear is rotatably connected to the middle plate and located inside and below the middle plate. The driven gear is also detachably connected to the drive gear shaft and located away from the drive gear shaft. On one end of the rear plate, the drive gear is rotatably connected to the middle plate and located inside the upper part of the middle plate. The drive gear is also meshed with the driven gear and located above the driven gear. The precision adjustment gear pump assembly also includes a crescent pin and a pump shaft. The crescent pin is detachably connected to the drive gear and located on one side of the inner center of the drive gear. The pump shaft is detachably connected to the crescent pin and located on the side of the crescent pin away from the drive gear. The pump shaft is located at the inner center of the drive gear and is also perpendicular to the drive gear. The precision adjustment gear pump assembly also includes a parallel pin. The parallel pin is detachably connected to the pump shaft and located on the inner side of the pump shaft away from the drive gear.

2. The gear pump for an automotive painting system as described in claim 1, characterized in that, The precision-adjustable gear pump assembly also includes a front plate, which is detachably connected to the middle plate and located on the side of the middle plate away from the rear plate, and the front plate is disposed on the outer surface of the pump shaft.