Quick disassembly and assembly structure for pump assembly and complete machine

Abstract

The utility model belongs to the technical field of spraying machines, and relates to a quick disassembly and assembly structure for a pump assembly and a complete machine. Comprising a complete machine and a pump assembly, the pump assembly comprises a pump shell and a plunger rod, a positioning hole and a fixing hole are formed in the pump shell, the complete machine comprises a gear box and a gear box front cover, a positioning pin and a bolt fixing hole are arranged on the gear box front cover, an eccentric wheel is further rotationally arranged on the gear box front cover, and the eccentric wheel is driven by the gear box to rotate. A driving part is eccentrically arranged on the outer side face of the eccentric wheel, a plunger rod connecting hole is formed in the driving part, the positioning pin is arranged in the positioning hole in a penetrating mode, a bolt penetrates through the fixing hole to be connected into the bolt fixing hole in a screwed mode so that the pump assembly can be fixedly connected with the whole machine, and a ball head of the plunger rod is connected into the plunger rod connecting hole. According to the quick disassembly and assembly structure of the pump assembly and the whole machine, independent disassembly and assembly of the pump assembly are achieved, the structure is simple, and disassembly and assembly are convenient and quick.

Description

Technical field:

[0001] The utility model belongs to the technical field of spraying machines, in particular to a quick disassembly and assembly structure of a pump component and a whole machine. Background technology:

[0002] When the sprayer is spraying, a booster pump is used to increase the pressure of the paint to a high pressure, and then spray it out through a very fine spray hole, so that the paint forms a fan-shaped mist; the booster pump is a plunger pump or a diaphragm pump. The paint needs to be sucked to achieve the predetermined spraying effect. Since the paint has certain chemical properties, the requirements for the spray pump are relatively high.

[0003] During the use of the spray machine, the pump assembly is a consumable part. Due to work efficiency issues, the vacuum degree inside the plunger pump is also low. The internal oil or paint will undergo certain qualitative changes as the use time increases, and the internal parts will also deform. When the internal vacuum degree is affected by the deformation of the structural parts, the pump assembly needs to be replaced. Therefore, a quick disassembly and assembly structure of the pump assembly and the entire machine is required to improve the flexibility of disassembly and assembly and facilitate the replacement of the pump assembly. Summary of the invention:

[0004] The utility model aims to provide a quick disassembly and assembly structure of a pump assembly and a whole machine, which is convenient and quick for replacing the pump assembly.

[0005] The utility model is achieved in this way:

[0006] A quick disassembly and assembly structure of a pump assembly and a complete machine includes a complete machine and a pump assembly, the pump assembly includes a pump casing and a plunger rod, the pump casing is provided with two positioning holes and two fixing holes, the complete machine includes a gear box and a gear box front cover, the gear box front cover is provided with a positioning pin and a threaded hole, and an eccentric wheel is also rotatably arranged on the gear box front cover, the eccentric wheel is driven to rotate by the gear box, a driving member is eccentrically arranged on the outer side surface of the eccentric wheel, a plunger rod connecting hole is arranged on the driving member, the plunger rod connecting hole is an open-ring hole for facilitating the disassembly and assembly of the ball head on the plunger rod, the positioning pin is penetrated in the positioning hole and is screwed in the threaded hole through a bolt passing through the fixing hole to realize the fixed connection between the pump assembly and the complete machine, and the ball head of the plunger rod is connected in the plunger rod connecting hole.

[0007] In the above-mentioned quick disassembly and assembly structure of a pump assembly and a whole machine, two mounting plates are respectively arranged on both sides of the pump housing, and in this embodiment, a positioning hole and a fixing hole are arranged on each mounting plate. By adopting the above-mentioned technical solution, there is a mounting plate on each side of the pump assembly, so that the connection between the pump assembly and the whole machine is more stable.

[0008] In the above-mentioned quick disassembly and assembly structure of a pump assembly and a whole machine, a fixing seat is arranged inside the front cover of the gear box, a depression for avoiding the pump casing is arranged in the middle of the fixing seat, and the positioning pins and threaded holes are arranged on the fixing seat on both sides of the depression.

[0009] In the above-mentioned quick disassembly and assembly structure of a pump assembly and a complete machine, the positioning pins and threaded holes on the fixing seats on both sides of the recess are respectively distributed diagonally, and accordingly, the positioning holes on the mounting plate correspond to the positions and numbers of the positioning pins, and the fixing holes on the mounting plate correspond to the positions and numbers of the threaded holes. By adopting the above-mentioned technical solution, when the pump assembly is assembled, the positioning pins and bolts respectively fix the pump assembly to the complete machine at diagonal positions, thereby preventing the pump assembly from shaking during operation.

[0010] In the above-mentioned quick disassembly and assembly structure of a pump assembly and a whole machine, a gear box rear cover is arranged on the gear box front cover.

[0011] The outstanding advantages of the utility model compared with the prior art are:

[0012] 1. The utility model improves the structure of the sprayer and the plunger pump, and uses the plunger pump as an independent detachable component, which is convenient for replacing the plunger pump;

[0013] 2. The utility model improves the assembly structure of the sprayer and the plunger pump. The pump assembly is positioned by passing the positioning pin through the positioning hole on the mounting plate. The pump assembly is fixed by passing the bolt through the fixing hole on the mounting plate and then screwing with the threaded hole on the fixing block. The ball head of the pump assembly is connected with the plunger rod connecting hole provided in the front cover of the gear box to realize the rapid assembly of the pump assembly and the whole machine. The assembly structure is simpler and the disassembly and assembly are faster and easier. Description of the drawings:

[0014] Figure 1 It is an exploded view of the whole machine of the utility model;

[0015] Figure 2 It is an exploded view of the gearbox and pump assembly of the utility model;

[0016] Figure 3 yes Figure 2 A partial enlarged view of

[0017] Figure 4 It is an exploded view of the plunger pump of the utility model.

[0018] Figure numerals: 1. complete machine; 2. pump assembly; 3. pump housing; 4. plunger rod; 5. positioning hole; 6. fixing hole; 7. gear box; 8. gear box front cover; 9. positioning pin; 10. threaded hole; 11. eccentric wheel; 12. driving part; 13. plunger rod connecting hole; 14. ball head; 15. mounting plate; 16. fixing seat; 17. gear box rear cover; 18. bolt. Specific implementation method:

[0019] The present invention is further described below with reference to specific embodiments. Figure 1 —4:

[0020] Compare with Figure 1 A quick disassembly and assembly structure of a pump assembly and a complete machine includes a complete machine 1 and a pump assembly 2, the pump assembly 2 includes a pump housing 3 and a plunger rod 4, and the complete machine 1 includes a gear box 7, a gear box front cover 8 and a gear box rear cover 17.

[0021] Compare with Figure 2 , 4 In this embodiment, two positioning holes 5 and two fixing holes 6 are provided on the pump housing 3. Two mounting plates 15 are symmetrically provided on the pump housing 3. In this embodiment, one positioning hole 5 and one fixing hole 6 are provided on each mounting plate 15. At the same time, there is one mounting plate 15 on each of the left and right sides, so that the pump assembly 2 is more firmly connected to the whole machine 1.

[0022] Compare with Figure 3 , the gearbox front cover 8 is provided with a locating pin 9 and a threaded hole 10. The gearbox front cover 8 is provided with a fixing seat 16 inside, and a depression is provided in the middle of the fixing seat 16 to avoid the pump housing 3. The locating pin 9 and the threaded hole 10 are arranged on the fixing seat 16 on both sides of the depression. The locating pins 9 and the threaded holes 10 on the fixing seat 16 on both sides of the depression are respectively distributed diagonally. Correspondingly, the locating holes 5 on the mounting plate 15 correspond to the position and number of the locating pins 9, and the fixing holes 6 on the mounting plate 15 correspond to the position and number of the threaded holes 10. The locating pin 9 is penetrated in the locating hole 5 and is screwed in the threaded hole 10 through the bolt 18 through the fixing hole 6 to realize the fixed connection between the pump assembly 2 and the whole machine 1. By adopting the above technical solution, the locating pin 9 passes through the fixing hole 6 to realize the rapid positioning of the assembly position of the pump assembly 2. At the same time, the locating pin 9 and the bolt 18 respectively fix the pump assembly 2 to the whole machine 1 at the diagonal position to prevent the pump assembly 2 from shaking when working.

[0023] Compare with Figure 2 , 3The gear box front cover 8 is rotatably provided with an eccentric wheel 11, and the eccentric wheel 11 is driven to rotate by the gear box 7. A driving member 12 is eccentrically provided on the outer side surface of the eccentric wheel 11, and a plunger rod connecting hole 13 is provided on the driving member 12. The plunger rod connecting hole 13 is an open-loop hole for facilitating the disassembly and assembly of the ball head 14 on the plunger rod 4. When assembling the pump assembly 2, the driving member 12 is adjusted to the correct position by adjusting the angle of the eccentric wheel 11, and then the ball head 14 of the plunger rod 4 is connected to the plunger rod connecting hole 13, so that the assembly position of the pump assembly 2 is finally determined. After the position is determined, the bolt 18 passes through the fixing hole 6 and is screwed into the threaded hole 10 to complete the fixed connection between the pump assembly 2 and the whole machine 1, so as to realize the rapid disassembly and assembly of the pump assembly 2 and the whole machine 1.

[0024] The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of implementation of the present utility model. Therefore, any equivalent changes made based on the shape, structure, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A quick disassembly and assembly structure of a pump assembly and a whole machine, comprising a whole machine (1) and a pump assembly (2), wherein the pump assembly (2) comprises a pump housing (3) and a plunger rod (4), characterized in that: One or more positioning holes (5) and one or more fixing holes (6) are arranged on the pump housing (3). The whole machine (1) comprises a gear box (7) and a gear box front cover (8). The gear box front cover (8) is provided with a positioning pin (9) and a threaded hole (10). An eccentric wheel (11) is rotatably arranged on the gear box front cover (8). The eccentric wheel (11) is driven to rotate by the gear box (7). A driving member (12) is eccentrically arranged on the outer side surface of the eccentric wheel (11). The driving member (12) is provided with a plunger rod connecting hole (13), which is an open-loop hole for facilitating the disassembly and assembly of the ball head (14) on the plunger rod (4). The positioning pin (9) is inserted into the positioning hole (5) and is screwed into the threaded hole (10) through a bolt (18) passing through the fixing hole (6) to realize the fixed connection between the pump assembly (2) and the whole machine (1). The ball head (14) of the plunger rod (4) is connected to the plunger rod connecting hole (13).

2. A quick disassembly and assembly structure of a pump assembly and a complete machine according to claim 1, characterized in that: Two mounting plates (15) are respectively arranged on both sides of the pump housing (3), and each mounting plate (15) is provided with a positioning hole (5) and one or more fixing holes (6).

3. The quick disassembly and assembly structure of a pump assembly and a complete machine according to claim 2, characterized in that: Each mounting plate (15) is provided with a fixing hole (6).

4. The quick disassembly and assembly structure of a pump assembly and a complete machine according to claim 2, characterized in that: A fixing seat (16) is arranged inside the gear box front cover (8), a depression is arranged in the middle of the fixing seat (16) to avoid the pump housing (3), and the positioning pin (9) and the threaded hole (10) are arranged on the fixing seat (16) on both sides of the depression.

5. The quick disassembly and assembly structure of a pump assembly and a complete machine according to claim 4, characterized in that: The positioning pins (9) and the threaded holes (10) on the fixing seats (16) on both sides of the recess are respectively distributed diagonally. Accordingly, the positioning holes (5) on the mounting plate (15) correspond to the positions and quantities of the positioning pins (9) one by one, and the fixing holes (6) on the mounting plate (15) correspond to the positions and quantities of the threaded holes (10) one by one.

6. The quick disassembly and assembly structure of a pump assembly and a complete machine according to claim 1, characterized in that: The gear box front cover (8) is provided with a gear box rear cover (17).

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