Parts no-dead-corner paint spraying device for centrifugal pump production

Abstract

The invention discloses a part dead-corner-free paint spraying device for centrifugal pump production, and relates to a part spraying device for centrifugal pump production, the part dead-corner-free paint spraying device comprises a machine box body and a rotary clamping part, a second spraying part and a first spraying part are arranged above a non-standard part, a through hole is formed in the middle of a partition plate, a rotary disc feeding part is arranged below the through hole, and a lifting block is arranged below the rotary disc feeding part. According to the non-standard part clamping device for spraying production of the centrifugal pump, one-by-one feeding operation of four non-standard parts can be achieved at a time, and automatic clamping and rotating operation can be conducted on the outer circles of the non-standard parts through the rotary clamping part; the non-standard parts can be prevented from being separated from the two rotary clamping parts in the rotating process by arranging the auxiliary clamping parts, the overall stability of the device is improved, and the upper surfaces, the inner surfaces and the lower surfaces of the non-standard parts can be subjected to dead-corner-free spraying operation by arranging the first spraying part, the second spraying part and the third spraying part.

Description

Technical Field

[0001] The invention relates to a centrifugal pump production parts spraying device, in particular to a centrifugal pump production parts spraying device with no dead angle. Background Art

[0002] The guide sleeve of a centrifugal pump is a component installed between the impeller and the pump casing. It is mainly used to guide the flow of fluid and reduce the circulation and vortex of the fluid between the impeller and the pump casing, thereby improving the efficiency of the pump. The main function of the guide sleeve is to guide the fluid to flow evenly into the impeller, avoid lateral flow, and stabilize the flow field. For example, in a series-parallel centrifugal pump, the guide vane is installed on the mouth ring at the end of the suction chamber and the impeller inlet to ensure that the fluid can enter the impeller smoothly. The guide sleeve can protect the impeller and the pump casing from direct impact of the fluid and reduce wear.

[0003] The guide sleeve is a cylindrical component whose inner diameter matches the outer diameter of the impeller and whose outer diameter matches the inner diameter of the pump casing. For example, in a multi-stage centrifugal pump, the outer side of the guide sleeve is covered with a guide tube, and the guide component and the guide tube are integrally stamped. The upper outer surface of the guide sleeve is designed with a special guide structure, such as an irregular guide plate or guide vane protrusion structure, to further optimize the flow of the fluid.

[0004] In the actual production process of spraying the outer surface of the guide sleeve, there are the following technical problems: 1. Because the guide sleeve is a hollow cylindrical structure with multiple circular array guide plates on the upper surface, in the conventional spraying production process, at least two clampings are required to realize the clamping of the non-standard parts of the guide sleeve, so as to meet the one-time spraying operation of the upper surface, lower surface and inner surface. In addition, the clamping process is inefficient, and employees are required to place the non-standard parts of the guide sleeve on the clamping station, spray once, and then turn around and clamp again. In the mass production process, the labor intensity is high and the efficiency is low, which cannot satisfactorily meet the processing needs of the company's automated, planned and continuous production operations.

[0005] 2. The existing spraying device has certain technical difficulties in the one-time spraying operation of the upper surface, lower surface and inner surface of the non-standard parts of the guide sleeve, especially without a second clamping, it is impossible to achieve a painting operation without dead angles. Improvements are needed to address the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the above problems and provide a dead-angle-free painting device for parts used in the production of centrifugal pumps. The device is provided with a turntable loading part and a lifting block, which can realize the one-by-one loading operation of four non-standard parts at a time, reduce the labor intensity of enterprise employees in loading and clamping one by one, and increase the clamping and loading speed by four times. A rotating clamping part is provided to automatically clamp and rotate the outer circle of non-standard parts. An auxiliary clamping part is provided to prevent non-standard parts from detaching from the two rotating clamping parts during rotation, thereby improving the overall stability of the device. A first spraying part, a second spraying part and a third spraying part are provided to respectively perform dead-angle-free spraying operations on the upper surface, inner surface and lower surface of non-standard parts.

[0007] To achieve the above object, the technical solution adopted by the present invention is: A dead angle-free painting device for parts used in the production of centrifugal pumps comprises a chassis body, a partition plate horizontally arranged in the chassis body, and a rotating clamping part symmetrically arranged on the partition plate for rotating and clamping non-standard parts, a second spraying part and a first spraying part respectively used for spraying paint on the inner surface and the upper surface of the non-standard parts are arranged above the non-standard parts, a through hole is arranged in the middle of the partition plate, a turntable feeding part used for rotating and conveying non-standard parts is arranged below the through hole, a lifting block arranged below the turntable feeding part can lift the non-standard parts upward and transport them between the two rotating clamping parts, auxiliary clamping parts used to prevent the non-standard parts from detaching when rotating are symmetrically arranged on the side of the rotating clamping part, and a third spraying part used for spraying paint on the lower surface of the non-standard parts is arranged on the side of the auxiliary clamping part.

[0008] As a further improvement of the above solution, the second spraying part is connected to the telescopic shaft end of the second oil cylinder, the second oil cylinder is arranged in the middle of the top of the chassis through a mounting plate, and the second spraying part is connected to the second delivery pipe.

[0009] As a further improvement of the above scheme, the first spraying part is connected to the telescopic shaft end of the first cylinder, the upper end of the first cylinder is connected to the screw nut on the screw, the slider on the screw nut is matched with the guide rail, one end of the screw is connected to the output shaft end of the first motor, the first spraying part is connected to the first conveying pipe, and the first bearing is arranged between the screw and the chassis.

[0010] As a further improvement of the above scheme, the rotating clamping part includes a movable frame, in which a rotating clamp is rotatably arranged, a driven gear at the end of the rotating clamp is meshed with a driving gear at the output shaft end of the third motor for transmission, and a groove matching the outer circle of the non-standard component is arranged in the middle of the rotating clamp.

[0011] As a further improvement of the above scheme, the side of the movable frame is connected to the fourth oil cylinder telescopic shaft end on the side support plate, a guide rod is horizontally arranged on the movable frame, one end of the guide rod is connected to the side support plate, and a bushing is arranged between the guide rod and the movable frame.

[0012] As a further improvement of the above solution, the turntable loading part includes a turntable in a cross shape. Four support brackets for holding non-standard parts are arranged on the turntable. A first clearance groove for the lifting block to pass through and a second clearance groove are respectively arranged on the support bracket and the turntable. The lifting block is connected to the end of the telescopic shaft of the third oil cylinder, and the bottom of the turntable is connected to the end of the output shaft of the second motor.

[0013] As a further improvement of the above solution, the auxiliary clamping part includes a movable carrier plate in a U-shaped structure. The movable carrier plate is connected to the end of the telescopic shaft of the sixth oil cylinder. Rollers for rolling contact with the lower surface of the non-standard part are arranged inside the movable carrier plate.

[0014] As a further improvement of the above solution, the third spraying part includes a paint spraying head. The paint spraying head is connected to the end of the telescopic shaft of the fifth oil cylinder, and the paint spraying head is connected to the third delivery pipe.

[0015] As a further improvement of the above solution, the first spraying part includes a bearing bracket. A support shell is arranged inside the bearing bracket. A spring is arranged inside the support shell. A snap ring in a semi-circular arc shape is arranged at one end of the support shell. A spray head is arranged between the two snap rings. The structure of the second spraying part is the same as that of the first spraying part.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention is provided with a turntable loading part and a lifting block, which can realize the individual loading operation of four non-standard parts at a time, reduce the labor intensity of enterprise employees for individual loading and clamping, and the loading and clamping speed is increased by four times. The rotary clamping part is provided to automatically clamp and rotate the outer circle of the non-standard part. The auxiliary clamping part is provided to prevent the non-standard part from disengaging from the two rotary clamping parts during rotation, improving the overall stability of the device. The first spraying part, the second spraying part, and the third spraying part are provided to perform a dead-angle-free spraying operation on the upper surface, inner surface, and lower surface of the non-standard part respectively.

[0017] 2. The present application can accurately position. The first spraying part can accurately adjust the position through the cooperation of the first oil cylinder, the lead screw, and the guide rail, ensuring a proper distance between the painting position and the surface of the part, and improving the uniformity and adhesion of the painting.

[0018] 3. The present application can improve production efficiency and has a high degree of automation. The entire painting process is automated, from the conveying of the turntable loading part, the lifting of the lifting block to the automatic painting of each spraying part, reducing manual intervention and improving production efficiency. It can operate continuously. The turntable of the turntable loading part is in a cross shape and can place multiple non-standard parts at the same time, and realizes continuous feeding through rotation, ensuring the continuity of production.

[0019] 4. This application can reduce labor costs: Since the entire painting process is highly automated, the need for manual painting is reduced, thus lowering labor costs. At the same time, automated operations also reduce errors and quality problems that may be caused by manual operations.

[0020] 5. This application can enhance adaptability and flexibility, and adapt to different shapes and sizes. The groove in the middle of the rotating clamping cylinder matches the outer circle of non-standard parts, enabling it to adapt to parts of different shapes and sizes. The movable carrier plate of the auxiliary clamping part is in a U-shaped structure and can be adjusted according to the shape of the part, enhancing the adaptability of the device.

[0021] 6. This application can flexibly adjust the painting position. The first spraying part and the second spraying part are respectively adjusted in position through the telescopic shaft ends of the first oil cylinder and the second oil cylinder, and can flexibly change the painting position according to the specific shape and size of the part.

[0022] 7. This application can improve the safety of the working environment. The entire painting process is carried out inside the machine case, reducing the pollution of the painting to the environment and protecting the safety of the operators, avoiding contact with harmful painting substances. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view structural schematic diagram of the present invention.

[0024] Figure 2 It is a front view structural schematic diagram at the position of the rotating clamping part of the present invention.

[0025] Figure 3 In the present invention Figure 1 It is a sectional view structural schematic diagram at A-A in

[0026] Figure 4 It is a partial enlarged schematic diagram of the first spraying part of the present invention.

[0027] Figure 5 It is a structural schematic diagram at the position of the turntable loading part of the present invention.

[0028] Figure 6 It is Figure 3 It is a sectional view structural schematic diagram at B-B in

[0029] Figure 7 It is a top view structural schematic diagram of the turntable of the present invention.

[0030] Figure 8 It is a three-dimensional structural schematic diagram of the non-standard part of the present invention.

[0031] Fig. 9 It is a front view structural schematic diagram of the non-standard part of the present invention.

[0032] The text labels in the figure are as follows: 1. Rotary clamping part; 2. First motor; 3. First bearing; 4. Chassis; 5. Guide rail; 6. First conveying pipe; 7. First spraying part; 8. First oil cylinder; 9. Screw nut; 10. Slider; 11. Screw; 12. Mounting plate; 13. Second oil cylinder; 14. Second spraying part; 15. Second conveying pipe; 16. Non-standard parts; 17. Partition; 18. Through hole; 19. Third oil cylinder; 20. Lifting block; 21. Second motor; 22. Turntable feeding part; 23. Third spraying part; 24. Auxiliary clamping part; 101. Fourth oil cylinder; 10 2. Side support plate; 103. Guide rod; 104. Bushing; 105. Movable frame; 106. Third motor; 107. Driving gear; 108. Rotating clamp; 109. Driven gear; 701. Load-bearing bracket; 702. Support shell; 703. Spring; 704. Snap ring; 705. Spray head; 2201. Support bracket; 2202. First avoidance groove; 2203. Second avoidance groove; 2204. Turntable; 2301. Fifth oil cylinder; 2302. Spray paint head; 2303. Third delivery pipe; 2401. Sixth oil cylinder; 2402. Movable carrier plate; 2403. Roller. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution, the present invention is described in detail below in conjunction with embodiments. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0034] like Figure 1-Figure 9 As shown, the specific scheme of this embodiment is: a dead angle-free painting device for parts for centrifugal pump production, comprising a chassis body 4, a partition 17 horizontally arranged in the chassis body 4, and a rotating clamping part 1 symmetrically arranged on the partition 17 for rotating and clamping non-standard parts 16, a second spraying part 14 and a first spraying part 7 for respectively spraying paint on the inner surface and the upper surface of the non-standard parts 16 are arranged above the non-standard parts 16, a through hole 18 is arranged in the middle of the partition 17, and a turntable feeding part 22 for rotating and conveying the non-standard parts 16 is arranged below the through hole 18, and a lifting block 20 arranged below the turntable feeding part 22 can lift the non-standard parts 16 upward and transport them between the two rotating clamping parts 1, and an auxiliary clamping part 24 for preventing the non-standard parts 16 from detaching during rotation is symmetrically arranged on the side of the rotating clamping part 1, and a third spraying part 23 for spraying paint on the lower surface of the non-standard parts 16 is arranged on the side of the auxiliary clamping part 24.

[0035] like Figure 1 and Figure 2 As shown, as a preferred embodiment of the above embodiment, the second spraying part 14 is connected to the telescopic shaft end of the second oil cylinder 13, the second oil cylinder 13 is arranged in the middle of the top of the chassis 4 through the mounting plate 12, and the second spraying part 14 is connected to the second delivery pipe 15.

[0036] As Figure 1 and Figure 2 shown, as a preferred mode of the above embodiment, the first spraying part 7 is connected to the end of the telescopic shaft of the first oil cylinder 8. The upper end of the first oil cylinder 8 is connected to the lead screw nut 9 on the lead screw 11. The slider 10 on the lead screw nut 9 is arranged in a matching manner with the guide rail 5. One end of the lead screw 11 is connected to the output shaft end of the first motor 2. The first spraying part 7 is connected to the first conveying pipe 6. A first bearing 3 is arranged between the lead screw 11 and the machine box body 4.

[0037] As Figure 1 and Figure 2 shown, as a preferred mode of the above embodiment, the rotary clamping part 1 includes a movable frame 105. A rotary clamping cylinder 108 is rotatably arranged in the movable frame 105. The driven gear 109 at the end of the rotary clamping cylinder 108 is meshed and driven with the driving gear 107 at the output shaft end of the third motor 106. A groove matching the outer circle of the non-standard part 16 is arranged in the middle of the rotary clamping cylinder 108.

[0038] As Figure 2 and Figure 3 shown, as a preferred mode of the above embodiment, the side part of the movable frame 105 is connected to the end of the telescopic shaft of the fourth oil cylinder 101 on the side support plate 102. A guide rod 103 is horizontally penetrated through the movable frame 105. One end of the guide rod 103 is connected to the side support plate 102. A bushing 104 is arranged between the guide rod 103 and the movable frame 105.

[0039] As Figure 3 and Figure 5 shown, as a preferred mode of the above embodiment, the turntable loading part 22 includes a turntable 2204 in a cross shape. Four support brackets 2201 for holding the non-standard part 16 are arranged on the turntable 2204. First clearance grooves 2202 and second clearance grooves 2203 for the lifting block 20 to pass through are respectively arranged on the support brackets 2201 and the turntable 2204. The lifting block 20 is connected to the end of the telescopic shaft of the third oil cylinder 19. The bottom of the turntable 2204 is connected to the output shaft end of the second motor 21.

[0040] As Figure 3 shown, as a preferred mode of the above embodiment, the auxiliary clamping part 24 includes a movable carrier plate 2402 in a C-shaped structure. The movable carrier plate 2402 is connected to the end of the telescopic shaft of the sixth oil cylinder 2401. Rollers 2403 for rolling contact with the lower surface of the non-standard part 16 are arranged in the movable carrier plate 2402.

[0041] As Figure 1 , Figure 2 , Figure 3As shown, as a preferred embodiment of the above embodiment, the third spraying part 23 includes a paint spray head 2302 , the paint spray head 2302 is connected to the telescopic shaft end of the fifth oil cylinder 2301 , and the paint spray head 2302 is connected to the third delivery pipe 2303 .

[0042] like Figure 1-Figure 4 As shown, as a preferred embodiment of the above embodiment, the first spraying part 7 includes a bearing bracket 701, a supporting shell 702 is arranged in the bearing bracket 701, a spring 703 is arranged in the supporting shell 702, a semicircular arc-shaped retaining ring 704 is arranged at one end of the supporting shell 702, a nozzle 705 is arranged between the two retaining rings 704, and the structure of the second spraying part 14 is the same as that of the first spraying part 7.

[0043] The specific working principle of the present invention is: During the clamping operation, the turntable 2204 of the turntable loading part 22 rotates under the drive of the second motor 21, and the non-standard parts 16 placed on the supporting bracket 2201 are transferred to a suitable position. At this time, the third oil cylinder 19 pushes the lifting block 20 to extend, and the non-standard parts 16 are lifted up, and transported to between the two rotating clamping parts 1 through the through hole 18. The rotating clamping part 1 moves inward under the action of the fourth oil cylinder 101, and the movable frame 105 moves horizontally, driving the rotating clamp 108 to clamp the non-standard parts 16. The driven gear 109 at the end thereof is meshed with the driving gear 107 at the output shaft end of the third motor 106 for transmission, so that the rotating clamp 108 can drive the non-standard parts 16 to rotate. At the same time, the movable carrier plate 2402 of the auxiliary clamping part 24 is pushed by the sixth oil cylinder 2401, and the roller 2403 rolls to contact the lower surface of the non-standard parts 16 to prevent it from detaching during rotation; During the painting operation, the first spraying part 7 is driven by the first oil cylinder 8 to move to a suitable position above the non-standard component 16 through the telescopic shaft end. At the same time, the first motor 2 drives the screw 11 to rotate, so that the slider 10 connected to the screw nut 9 moves along the guide rail 5, thereby adjusting the position of the first spraying part 7. The first conveying pipe 6 provides a material source for the painting operation of the first spraying part 7. The first spraying part 7 performs upper surface painting on the non-standard component 16; the second spraying part 14 is driven by the telescopic shaft end of the second oil cylinder 13 to move to a suitable position on the inner surface of the non-standard component 16, and performs inner surface painting on the non-standard component 16; the paint head 2302 of the third spraying part 23 is driven by the telescopic shaft end of the fifth oil cylinder 2301 to move to a suitable position on the lower surface of the non-standard component 16 to perform lower surface painting.

[0044] Compared with the prior art, this application has the following advantages: 1. This application can improve the painting quality and achieve full coverage. By rotating the rotating cylinder 108 of the rotating clamping part 1 to drive the non-standard part 16 to rotate, and cooperating with the first spraying part 7, the second spraying part 14, and the third spraying part 23 to spray paint from the upper surface, inner surface, and lower surface respectively, the comprehensiveness of painting is ensured, and the generation of dead angles is avoided.

[0045] 2. This application can achieve precise positioning. The first spraying part 7 can accurately adjust its position through the cooperation of the first oil cylinder 8, the lead screw 11, and the guide rail 5, ensuring an appropriate distance between the painting position and the surface of the part, and improving the uniformity and adhesion of the paint.

[0046] 3. This application can improve production efficiency and has a high degree of automation. The entire painting process is automated, from the conveying of the turntable loading part 22, the jacking of the lifting block 20 to the automatic painting of each spraying part, reducing manual intervention, improving production efficiency, and enabling continuous operation. The turntable 2204 of the turntable loading part 22 is in a cross shape and can place multiple non-standard parts 16 at the same time, and realizes continuous feeding through rotation, ensuring the continuity of production.

[0047] 4. This application can reduce labor costs: Since the entire painting process is highly automated, the demand for manual painting is reduced, and the labor cost is lowered. At the same time, automated operation also reduces the errors and quality problems that may be brought by manual operation.

[0048] 5. This application can enhance adaptability and flexibility to adapt to different shapes and sizes. The groove in the middle of the rotating cylinder 108 matches the outer circle of the non-standard part 16, and can adapt to parts of different shapes and sizes. The movable carrier plate 2402 of the auxiliary clamping part 24 is in a U-shaped structure and can be adjusted according to the shape of the part, enhancing the adaptability of the device.

[0049] 6. This application can flexibly adjust the painting position. The first spraying part 7 and the second spraying part 14 can adjust their positions respectively through the telescopic shaft ends of the first oil cylinder 8 and the second oil cylinder 13, and can flexibly change the painting position according to the specific shape and size of the part.

[0050] 7. This application can improve the safety of the working environment. The entire painting process is carried out inside the machine box body 4, reducing the pollution of the paint to the environment, and at the same time protecting the safety of the operators and avoiding contact with harmful paint substances.

[0051] It should be noted that, in this article, the terms include, contain or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Specific examples are used in this article to illustrate the principle and implementation of the technical solution of the present invention. The above examples are only used to help understand the method of the present invention and its core idea. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements, modifications or changes can be made, and the above technical features can also be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A centrifugal pump production component spray painting device without dead angles, comprising a housing (4), a partition (17) arranged inside the housing (4), characterized in that: The invention also comprises a rotary clamping part (1) symmetrically arranged on the partition (17) for rotary clamping the non-standard component (16); a second spraying part (14) and a first spraying part (7) are arranged above the non-standard component (16); a through hole (18) is arranged in the middle of the partition (17); a turntable loading part (22) is arranged below the through hole (18); a lifting block (20) arranged below the turntable loading part (22) is capable of lifting the non-standard component (16) upward and transporting it between the two rotary clamping parts (1); auxiliary clamping parts (24) are symmetrically arranged on the side of the rotary clamping part (1); and a third spraying part (23) is arranged on the side of the auxiliary clamping part (24).

2. A centrifugal pump production parts no-dead-angle painting device according to claim 1, characterized in that: The second spraying part (14) is connected to the telescopic shaft end of the second oil cylinder (13); the second oil cylinder (13) is arranged in the middle of the top of the chassis (4) through the mounting plate (12); and the second spraying part (14) is connected to the second delivery pipe (15).

3. A centrifugal pump production parts no-dead-angle painting device according to claim 1, characterized in that: The first spraying part (7) is connected to the telescopic shaft end of the first oil cylinder (8), the upper end of the first oil cylinder (8) is connected to the screw nut (9) on the screw rod (11), the slider (10) on the screw nut (9) is matched with the guide rail (5), one end of the screw rod (11) is connected to the output shaft end of the first motor (2), the first spraying part (7) is connected to the first conveying pipe (6), and a first bearing (3) is arranged between the screw rod (11) and the chassis (4).

4. A centrifugal pump production parts no-dead-angle painting device according to claim 1, characterized in that: The rotating clamping part (1) comprises a movable frame (105), a rotating clamping cylinder (108) is rotatably arranged in the movable frame (105), a driven gear (109) at the end of the rotating clamping cylinder (108) is meshed with a driving gear (107) at the output shaft end of the third motor (106) for transmission, and a groove is arranged in the middle of the rotating clamping cylinder (108).

5. A centrifugal pump production parts spray painting device without dead angles according to claim 4, characterized in that: The side of the movable frame (105) is connected to the telescopic shaft end of the fourth oil cylinder (101) on the side support plate (102); a guide rod (103) is horizontally provided on the movable frame (105); one end of the guide rod (103) is connected to the side support plate (102); and a bushing (104) is provided between the guide rod (103) and the movable frame (105).

6. The device for spraying paint without dead angles for parts used in the production of centrifugal pumps according to claim 1, characterized in that: The turntable loading part (22) comprises a turntable (2204), four support brackets (2201) are arranged on the turntable (2204), a first air avoidance groove (2202) and a second air avoidance groove (2203) are arranged on the support brackets (2201) and the turntable (2204), respectively, the lifting block (20) is connected to the telescopic shaft end of the third oil cylinder (19), and the bottom of the turntable (2204) is connected to the output shaft end of the second motor (21).

7. A centrifugal pump production parts spray painting device without dead angles according to claim 1, characterized in that: The auxiliary clamping portion (24) comprises a movable carrier plate (2402), the movable carrier plate (2402) being connected to the telescopic shaft end of the sixth oil cylinder (2401), and a roller (2403) being arranged inside the movable carrier plate (2402).

8. The device for spraying paint without dead angles for parts used in the production of centrifugal pumps according to claim 1, characterized in that: The third spraying unit (23) comprises a spray head (2302), the spray head (2302) being connected to the telescopic shaft end of the fifth oil cylinder (2301), and the spray head (2302) being connected to the third delivery pipe (2303).

9. The device for spraying paint without dead angles for parts used in the production of centrifugal pumps according to claim 1, characterized in that: The first spraying portion (7) comprises a bearing bracket (701), a supporting shell (702) is arranged inside the bearing bracket (701), a spring (703) is arranged inside the supporting shell (702), a semicircular arc-shaped clamping ring (704) is arranged at one end of the supporting shell (702), and a spray head (705) is arranged between the two clamping rings (704). The structure of the second spraying portion (14) is the same as that of the first spraying portion (7).

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