Double-pump spraying machine

Abstract

The utility model discloses a double-pump coating machine, which comprises a frame, a driving motor, a gearbox and two plunger pumps, the driving motor and the gearbox are arranged on the frame, a main driving gear, a two-stage variable gear, two crankshaft gears and two output crankshafts are arranged in the gearbox, the main driving gear is connected with an output shaft of the driving motor, and the two output crankshafts are connected with the two-stage variable gear. A large gear in the secondary change gear is in meshing transmission with the main driving gear, a small gear in the secondary change gear is in meshing transmission with the two crankshaft gears, the two crankshaft gears drive the two output crankshafts to rotate respectively, driving swing arms are arranged at the upper ends of the plunger pumps and connected with the output crankshafts, and the driving swing arms move up and down in a reciprocating mode to drive the two plunger pumps to work. The output ends of the two plunger pumps are connected with the filter through discharging pipes respectively, and the filter is connected with the two spray guns through two independent pipelines respectively. The driving structure of the two plunger pumps is more stable and reliable, and the output pressure is more stable; and the whole machine is more compact and portable in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying machines, in particular to a double-pump spraying machine. Background Art

[0002] With the continuous development of spraying machine technology, dual-head spraying machines that can provide two independent outputs have emerged, and can use two spray guns to perform spraying operations separately. The applicant previously designed and produced a dual-pump spraying machine with two independent plunger pumps for pressurization according to user needs, forming two completely independent paint pressurization structures, ensuring that the spraying pressure and flow of the two independent nozzles will not fluctuate greatly during spraying, and well meet the use requirements. After several years of promotion and use, the dual-pump sprayer continued to be upgraded, and the drive structure of the two plunger pumps and the overall equipment were optimized to make the drive structure more stable and reliable, and the overall structure more compact and portable. Utility Model Content

[0003] In order to solve the above problems, the purpose of the utility model is to provide a dual-pump sprayer, the structure of the whole machine is more compact and portable, and the driving structure of the two plunger pumps is more stable and reliable.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A double-pump sprayer comprises a frame, a drive motor, a gearbox and two plunger pumps, wherein the drive motor and the gearbox are arranged on the frame, and the two plunger pumps are arranged on the outside of the gearbox. The gearbox is provided with a main drive gear, a secondary speed change gear, two crankshaft gears and two output crankshafts, wherein the main drive gear is connected to the output shaft of the drive motor, the large gear in the secondary speed change gear is meshed with the main drive gear for transmission, the small gear in the secondary speed change gear is meshed with the two crankshaft gears for transmission, the two crankshaft gears respectively drive the two output crankshafts to rotate, a drive swing arm is provided at the upper end of the plunger pump and is connected to the output crankshaft, the drive swing arm reciprocates up and down to drive the two plunger pumps to work, the output ends of the two plunger pumps are respectively connected to filters via discharge pipes, and the filters are respectively connected to two spray guns via two independent pipelines.

[0006] Furthermore, a controller is provided on the frame, and the controller controls the connection between the driving motor and the filter.

[0007] Furthermore, the controller is arranged on the frame on the side of the filter.

[0008] Furthermore, the filter is provided with two independent filter channels, each filter channel is connected to a pressure detection sensor and a pressure relief valve, the pressure relief valve is connected to a reflux pipe, and the reflux pipe returns the pressure-relieved and discharged paint to the raw material cylinder.

[0009] Furthermore, the input ends of the two plunger pumps are respectively provided with independent suction pipes.

[0010] Furthermore, four legs are provided at the bottom of the frame, and a handle is provided at the top of the gearbox.

[0011] The utility model has the following beneficial effects:

[0012] The utility model provides a driving gearbox with a main driving gear, a secondary speed gear and two crankshaft gears, and the two crankshaft gears are synchronously driven to rotate by the main driving gear and the secondary speed gear, and then the output crankshaft is driven to rotate by the two crankshaft gears, so that two independent plunger pumps are respectively driven by two driving swing arms to increase pressure, and the driving structure of the two plunger pumps is more stable and reliable, and the output pressure is more stable; the paint output by the two plunger pumps is then independently output through the discharge pipe and the filter, so that the two spray guns in the spray machine can be used simultaneously or separately, and the situation that the two spray guns affect each other during use, resulting in large fluctuations in spray pressure and flow rate, is avoided; and the structure of the whole machine is more compact and portable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the double-pump spraying machine of the utility model;

[0014] Figure 2 It is a cross-sectional schematic diagram of the gearbox part of the double-pump sprayer of the utility model.

[0015] Description of reference numerals:

[0016] 1. Frame; 11. Leg; 12. Handle; 2. Drive motor; 3. Gearbox; 31. Main drive gear; 32. Secondary speed gear; 33. Crankshaft gear; 34. Output crankshaft; 4. Plunger pump; 41. Drive swing arm; 5. Filter; 6. Controller; 7. Reflux pipe; 8. Suction pipe. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] See also Figure 1-2As shown, a dual-pump sprayer comprises a frame 1, a drive motor 2, a gearbox 3 and two plunger pumps 4, wherein the drive motor 2 and the gearbox 3 are arranged on the frame 1, and the two plunger pumps 4 are arranged on the outside of the gearbox 3, wherein the gearbox 3 is provided with a main drive gear 31, a secondary speed change gear 32, two crankshaft gears 33 and two output crankshafts 34, wherein the main drive gear 31 is connected to the output shaft of the drive motor 2, the large gear in the secondary speed change gear 32 is meshed with the main drive gear 31 for transmission, the small gear in the secondary speed change gear 32 is meshed with the two crankshaft gears 33 for transmission, and the two crankshaft gears 33 respectively drive the two output crankshafts 34 to rotate, and a drive swing arm 41 is provided at the upper end of the plunger pump 4 and is connected to the output crankshaft 34, and the drive swing arm 41 reciprocates up and down to drive the two plunger pumps 4 to work, and the output ends of the two plunger pumps 4 are respectively connected to the filter 5 through the discharge pipe, and the filter 5 is respectively connected to the two spray guns through two independent pipelines. The frame 1 is provided with a controller 6, and the controller 6 controls the connection of the driving motor 2 and the filter 5. The controller 6 is arranged on the frame 1 on the side of the filter 5. Four legs 11 are arranged at the bottom of the frame 1, and a handle 12 is arranged at the top of the gearbox 3.

[0019] The filter 5 is provided with two independent filtering channels, each of which is connected to a pressure detection sensor and a pressure relief valve, and the pressure relief valve is connected to a reflux pipe 7, which returns the pressure-relieved paint to the raw material barrel. The input ends of the two plunger pumps 4 are respectively provided with independent suction pipes 8.

[0020] When the utility model is used, under the control of the controller 6, the driving motor 2 drives the two crankshaft gears 33 to rotate through the main driving gear 31 and the secondary speed change gear 32. The two crankshaft gears 33 then drive the two plunger pumps 4 through the two output crankshafts 34 to pressurize the paint. The pressurized paint is sent to the filter 5 for filtration through the discharge pipes, and then supplied to the two spray guns for independent use through two independent pipelines.

[0021] The above description is only a specific implementation method of the utility model, and does not limit the patent scope of the utility model. Any equivalent structural transformation made using the contents of the utility model specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the utility model.

Claims

1. A double pump sprayer, characterized in that: The invention comprises a frame (1), a driving motor (2), a gearbox (3) and two plunger pumps (4), wherein the driving motor (2) and the gearbox (3) are arranged on the frame (1), the two plunger pumps (4) are arranged on the outside of the gearbox (3), the gearbox (3) is provided with a main driving gear (31), a secondary speed change gear (32), two crankshaft gears (33) and two output crankshafts (34), the main driving gear (31) is connected to the output shaft of the driving motor (2), the large gear in the secondary speed change gear (32) is meshed with the main driving gear (31), and the large gear in the secondary speed change gear (32) is meshed with the main driving gear (31). The pinion in the secondary speed change gear (32) is meshed with the two crankshaft gears (33) for transmission, and the two crankshaft gears (33) respectively drive the two output crankshafts (34) to rotate. The upper end of the plunger pump (4) is provided with a driving swing arm (41) connected to the output crankshaft (34), and the driving swing arm (41) reciprocates up and down to drive the two plunger pumps (4) to work. The output ends of the two plunger pumps (4) are respectively connected to the filter (5) through the discharge pipe, and the filter (5) is respectively connected to the two spray guns through two independent pipelines.

2. A dual-pump spraying machine according to claim 1, characterized in that: The frame (1) is provided with a controller (6), and the controller (6) controls the connection between the drive motor (2) and the filter (5).

3. A dual-pump spraying machine according to claim 2, characterized in that: The controller (6) is arranged on the frame (1) on the side of the filter (5).

4. A dual-pump spraying machine according to claim 1 or 2, characterized in that: The filter (5) is provided with two independent filtering channels, each filtering channel is connected to a pressure detection sensor and a pressure relief valve, the pressure relief valve is connected to a reflux pipe (7), and the reflux pipe (7) returns the coating material discharged by pressure relief to the raw material cylinder.

5. A dual-pump spraying machine according to claim 1, characterized in that: The input ends of the two plunger pumps (4) are respectively provided with independent suction pipes (8).

6. A dual-pump spraying machine according to claim 1, characterized in that: The bottom of the frame (1) is provided with four supporting legs (11), and the top of the gearbox (3) is provided with a handle (12).

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