Spraying process for overflowing surface of pump cavity of claw pump

Abstract

The invention discloses a spraying process for an overflowing surface of a pump cavity of a claw pump, and relates to the technical field of spraying, the spraying process comprises a spraying chamber, and further comprises a moving mechanism arranged in the spraying chamber and used for driving the spraying mechanism to move and spraying different parts of the overflowing surface of the pump cavity of a claw vacuum pump; the spraying mechanism is arranged on the moving mechanism and used for spraying the overflowing surface of the pump cavity of the claw type vacuum pump; the rotating mechanism is arranged on the spraying mechanism and used for adjusting the spraying direction of the spraying mechanism; and the two sets of wiping mechanisms are symmetrically arranged on the spraying mechanism and used for wiping the redundant polymer composite sprayed to the outer wall of the claw-type vacuum pump by the spraying mechanism. According to the spraying device, the distance between the first spray head and the flow passing surface of the pump cavity and the distance between the second spray head and the flow passing surface of the pump cavity can be adjusted, the fixed distance can be kept all the time, the spraying uniformity is improved, and the problem of coating waste or insufficient spraying caused by improper distance is further avoided.

Description

Technical Field

[0001] The invention belongs to the field of spraying technology, in particular to a spraying process for the flow-through surface of a claw pump chamber. Background Art

[0002] In the production process of claw pumps, a polymer coating is usually sprayed on the flow surface of the claw pump cavity. The polymer coating can significantly reduce the roughness of the flow surface of the pump cavity, forming a smooth surface close to the "mirror" effect. This extremely smooth surface reduces the stratification of the fluid in the pump, thereby reducing the turbulence inside the pump, reducing the volume loss and hydraulic loss in the pump.

[0003] The existing method often uses a manual handheld spray gun for spraying. Due to the influence of human factors, the spray gun is prone to shaking, which leads to uneven spraying. In addition, during the spraying process, the polymer coating is easy to splash onto the outer wall of the claw vacuum pump. After the spraying is completed, if the polymer material is sprayed onto the outer wall of the claw pump, this may indeed have some adverse effects, such as affecting the appearance of the claw pump, adding unnecessary weight, and may even affect the normal operation of the claw pump. Summary of the invention

[0004] In order to solve the problems raised by the above background technology, the present invention proposes a spraying process for the flow-through surface of a claw pump chamber.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A spraying process for the flow-through surface of a claw pump cavity comprises the following steps:

[0007] S1. Place the claw-type vacuum pump inside the spray chamber and directly under the spray mechanism. Then, drive the moving mechanism to insert the spray gun into the pump chamber of the claw-type vacuum pump, and adjust the distance between the No. 1 nozzle and the flow side wall of the pump chamber of the claw-type vacuum pump, and the distance between the No. 2 nozzle and the inner surface of the flow bottom of the pump chamber of the claw-type vacuum pump;

[0008] S2, adjust the solenoid valve so that the No. 1 nozzle is in an open state, while the No. 2 nozzle is closed. Then, the polymer composite material is sprayed onto the flow side wall surface of the pump chamber of the claw type vacuum pump through the No. 1 nozzle in the spraying mechanism. The solenoid valve is adjusted so that the No. 2 nozzle is opened, while the No. 1 nozzle is closed. Then, the No. 2 nozzle is driven by the moving mechanism to spray one by one and comprehensively from the side wall of the claw type vacuum pump to the middle part;

[0009] S3. The polymer coating sprayed onto the outer wall of the vacuum pump by the spraying mechanism is washed off by the wiping mechanism.

[0010] As a further preferred embodiment of the present technical solution: the spraying equipment includes a spraying chamber and also includes a moving mechanism, which is arranged inside the spraying chamber and is used to drive the spraying mechanism to move and spray different parts of the pump chamber flow surface of the claw type vacuum pump; the spraying mechanism is arranged on the moving mechanism and is used to spray the pump chamber flow surface of the claw type vacuum pump; the rotating mechanism is arranged on the spraying mechanism and is used to adjust the spraying direction of the spraying mechanism; the wiping mechanism is provided with two groups and is symmetrically arranged on the spraying mechanism, and is used to wipe the excess polymer composite material sprayed on the outer wall of the claw type vacuum pump by the spraying mechanism.

[0011] As a further preferred embodiment of the present technical solution: the wiping mechanism includes a movable seat and a rotating assembly and a material discharge assembly arranged on the movable seat, the material discharge assembly includes a fixed rod fixedly connected to the movable seat, a No. 2 rack is fixedly connected to the upper end of the fixed rod, the No. 2 rack is meshed with a No. 2 gear, a transmission shaft is fixedly connected inside the No. 2 gear, and a baffle is fixedly connected to the transmission shaft.

[0012] As a further preferred embodiment of the present technical solution: the rotating assembly includes a No. 2 connecting plate, a No. 3 driving motor is arranged on the No. 2 connecting plate, the output end of the No. 3 driving motor is fixedly connected to a driving gear, and a plurality of equally distributed conveying tubes are slidably connected to the movable seat, each of the conveying tubes is fixedly connected to a driven gear, and the driving gear is meshed with one of the driven gears, the upper end of each of the conveying tubes is rotatably connected to a transfer tube, a plurality of the transfer tubes are fixedly arranged on the No. 2 connecting plate, and the transmission shaft is rotatably connected to the transfer tube, the conveying tube is rotatably connected to a No. 1 connecting plate, a return spring is sleeved on the conveying tube, the return spring is arranged between the movable seat and the return spring, and a brush is arranged at the lower end of the conveying tube.

[0013] As a further preferred embodiment of the present technical solution: the moving mechanism includes a No. 1 cylinder fixedly connected to the inside of the spray chamber, the output end of the No. 1 cylinder is fixedly connected to a lifting frame, and the inside of the spray chamber is fixedly connected to a guide shaft, the lifting frame and the guide shaft are slidably arranged, a No. 1 driving motor is arranged on the lifting frame, the output end of the No. 1 driving motor is fixedly connected to a screw rod, and the screw rod is rotatably connected to the lifting frame, the screw rod is threadedly connected to a support frame, and a slide groove is arranged on the lifting frame, and the support frame is slidably connected to the slide groove.

[0014] As a further preferred embodiment of the present technical solution: the spraying mechanism includes a spacing adjustment component and a spray gun, the spacing adjustment component includes a No. 2 drive motor fixedly connected to the support frame, the output end of the No. 2 drive motor is fixedly connected to a bidirectional screw, and two sliders are threadedly connected to the bidirectional screw, the sliders are rotatably arranged with the spray gun, and the spray gun is fixedly connected to the sliders, the No. 2 drive motor is provided with a No. 1 nozzle and a No. 2 nozzle, and the No. 1 nozzle and the No. 2 nozzle are vertically arranged, the spray gun is connected to a paint box through a No. 1 hose, and the paint box is arranged on the spray chamber.

[0015] As a further preferred embodiment of the present technical solution: the rotating mechanism includes a No. 2 cylinder fixedly connected to the support frame, the output end of the No. 2 cylinder is fixedly connected to a connecting rod, the connecting rod is fixedly connected to a No. 1 slide rail, and the No. 1 slide rail is slidably connected to two No. 1 racks, each of the No. 1 racks is meshed with a No. 1 gear, the No. 1 gear is fixedly connected to the spray gun, a limiting plate is provided at the lower end of the No. 1 gear, the limiting plate is rotatably connected to the spray gun, and the No. 1 rack is slidably connected to the limiting plate.

[0016] As a further preferred embodiment of the present technical solution: a cleaning liquid storage box is also provided on the spray chamber, and the cleaning liquid storage box is connected to the transfer tube through a No. 2 hose.

[0017] As a further preferred embodiment of the technical solution: a connecting shaft is fixedly connected to the movable seat, a rotating ring is fixedly connected to the connecting shaft, and the rotating ring is sleeved on the outside of the spray gun.

[0018] As a further preferred embodiment of the technical solution: a No. 1 distance sensor and a No. 2 distance sensor are provided on the spray gun, and a controller is provided on the spray chamber.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the present invention, the distance between the No. 1 nozzle and the No. 2 nozzle and the flow surface of the pump chamber can be adjusted so that they always maintain a fixed distance, thereby improving the uniformity of spraying and avoiding the problem of paint waste or insufficient spraying due to improper distance.

[0021] 2. In the present invention, the polymer coating that may be attached to the outer wall of the vacuum pump during the spraying process is thoroughly washed off by using a brush and a cleaning solution, thereby preventing the polymer coating from being attached to the outer wall of the claw-type vacuum pump and affecting the appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 1 ;

[0024] Figure 3 for Figure 1 The enlarged schematic diagram at A in the middle;

[0025] Figure 4 This is an enlarged schematic diagram of point B in the middle;

[0026] Figure 5 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 2 ;

[0027] Figure 6 It is a partial structural cross-sectional view of the present invention;

[0028] Figure 7 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 3 .

[0029] Legend: 1. Spraying room; 2. Guide shaft; 3. Moving mechanism; 31. No. 1 cylinder; 32. Lifting frame; 33. No. 1 driving motor; 34. Screw rod; 35. Slide; 36. Support frame; 4. Spraying mechanism; 41. No. 2 driving motor; 411. Sliding block; 412. Bidirectional screw rod; 42. Spray gun; 43. No. 1 nozzle; 44. Solenoid valve; 45. Paint box; 46. No. 1 hose; 47. No. 2 nozzle; 5. No. 1 distance sensor; 6. No. 2 distance sensor; 7. Rotating mechanism; 71. No. 2 cylinder; 72. Connecting rod; 73. No. 1 slide rail; 74. No. 1 Rack No. 1; 75, gear No. 1; 76, limit plate; 8, wiping mechanism; 81, rotating ring; 82, connecting shaft; 83, movable seat; 84, driving motor No. 3; 841, driving gear; 842, driven gear; 843, conveying pipe; 844, transfer pipe; 845, brush; 85, fixing rod; 851, rack No. 2; 852, gear No. 2; 853, transmission shaft; 854, baffle; 86, reset spring; 87, connecting plate No. 1; 88, connecting plate No. 2; 89, cleaning liquid storage box; 810, hose No. 2; 10, connecting column; 11, slide rail No. 2. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1:

[0032] See also Figure 1-Figure 7The present application provides a spray coating process for the flow-through surface of a claw pump chamber, comprising the following steps:

[0033] S1, place the claw type vacuum pump inside the spray chamber 1 and directly under the spray mechanism 4, then, driven by the moving mechanism 3, insert the spray gun 42 into the pump chamber of the claw type vacuum pump, adjust the distance between the No. 1 nozzle 43 and the flow side wall of the pump chamber of the claw type vacuum pump, and the distance between the No. 2 nozzle 47 and the inner surface of the flow bottom of the pump chamber of the claw type vacuum pump;

[0034] S2. Adjust the solenoid valve 44 so that the No. 1 nozzle 43 is in an open state, while the No. 2 nozzle 47 is closed. After that, the polymer composite material is sprayed onto the flow side wall surface of the pump chamber of the claw type vacuum pump through the No. 1 nozzle 43 in the spraying mechanism 4. Adjust the solenoid valve 44 so that the No. 2 nozzle 47 is opened, while the No. 1 nozzle 43 is closed. Then, the No. 2 nozzle 47 is driven by the moving mechanism 3 to spray one by one and comprehensively from the side wall of the claw type vacuum pump to the middle part.

[0035] S3. The polymer coating sprayed onto the outer wall of the vacuum pump by the spraying mechanism 4 is washed off by the wiping mechanism 8.

[0036] The spraying equipment includes a spraying chamber 1, and also includes a moving mechanism 3, which is arranged inside the spraying chamber 1 and is used to drive the spraying mechanism 4 to move and spray different parts of the flow surface of the pump chamber of the claw type vacuum pump; the spraying mechanism 4 is arranged on the moving mechanism 3, and is used to spray the flow surface of the pump chamber of the claw type vacuum pump; the spraying mechanism 4 is provided with a rotating mechanism 7, which is used to adjust the spraying direction of the spraying mechanism 4; and the spraying mechanism 4 is provided with two groups of wiping mechanisms 8, which are used to wipe off the excess polymer composite material sprayed by the spraying mechanism 4 onto the outer wall of the claw type vacuum pump.

[0037] The spraying mechanism 4 includes a spacing adjustment component and a spray gun 42, the spacing adjustment component includes a No. 2 driving motor 41 fixedly connected to the support frame 36, the output end of the No. 2 driving motor 41 is fixedly connected to a bidirectional screw 412, and two sliders 411 are threadedly connected to the bidirectional screw 412, the sliders 411 and the spray gun 42 are rotatably arranged, and the spray gun 42 is fixedly connected to the slider 411, the No. 1 nozzle 43 and the No. 2 nozzle 47 are through-arranged on the No. 2 driving motor 41, and the No. 1 nozzle 43 and the No. 2 nozzle 47 are vertically arranged, the spray gun 42 is through-connected with a paint box 45 through a No. 1 hose 46, and the paint box 45 is arranged on the spraying room 1, and a delivery pump is arranged between the paint box 45 and the No. 1 hose 46, wherein the polymer compound inside the paint box 45 is delivered by the delivery pump The composite material passes through the No. 1 hose 46 and then to the spray gun 42, and is sprayed onto the inner wall of the side flow surface of the claw-type vacuum pump chamber through the No. 1 nozzle 43, and is sprayed onto the bottom inner wall of the flow surface of the claw-type vacuum pump chamber through the No. 2 nozzle 47, wherein the spray gun 42 is also provided with an electromagnetic valve 44. It should be noted that, because the area of ​​the bottom inner wall of the flow surface of the claw-type vacuum pump chamber is relatively large, the No. 2 nozzle 47 is required to be moved from the two side walls to the middle position under the drive of the moving mechanism 3, resulting in a change in the distance between the No. 1 nozzle 43 and the side inner wall. Therefore, the setting of 44 allows the No. 1 nozzle 43 to be opened for spraying the opposite side inner wall while the No. 2 nozzle 47 is in a closed state. On the contrary, when the No. 2 nozzle 47 is opened for spraying the bottom inner wall, the No. 2 nozzle 47 is in a closed state.

[0038] Specifically, the staff places the claw-type vacuum pump under the spray gun 42, and then drives the bidirectional screw 412 to rotate through the No. 2 drive motor 41. The bidirectional screw 412 drives the two sliders 411 to slide in opposite directions. Each slider 411 drives the spray gun 42 thereon to move, ensuring that the distance between the No. 1 nozzle 43 and the inner wall of the flow surface side of the claw-type vacuum pump pump chamber always maintains the rated value.

[0039] In this embodiment, the moving mechanism 3 includes a No. 1 cylinder 31 fixedly connected to the inside of the spray chamber 1, the output end of the No. 1 cylinder 31 is fixedly connected to a lifting frame 32, and the inside of the spray chamber 1 is fixedly connected to a guide shaft 2, the lifting frame 32 is slidably arranged with the guide shaft 2, and a No. 1 driving motor 33 is arranged on the lifting frame 32, the output end of the No. 1 driving motor 33 is fixedly connected to a screw rod 34, and the screw rod 34 is rotatably connected to the lifting frame 32, the screw rod 34 is threadedly connected to a support frame 36, and a slide groove 35 is arranged on the lifting frame 32, and the support frame 36 is slidably connected to the slide groove 35.

[0040] Specifically, by starting the No. 1 drive motor 33 to drive the screw rod 34 to rotate, the screw rod 34 drives the support frame 36 to slide along the slide groove 35, and the support frame 36 drives the spraying components thereon to spray different parts of the flow surface of the claw type vacuum pump chamber. At the same time, by starting the No. 1 cylinder 31 to move up and down, the lifting frame 32 drives the support frame 36 to move up and down, and the support frame 36 drives the upper components including the No. 2 nozzle 47 to move to the rated value of the distance between the inner wall of the bottom of the flow surface of the claw type vacuum pump chamber.

[0041] In this embodiment, the rotating mechanism 7 includes a No. 2 cylinder 71 fixedly connected to the support frame 36, and the output end of the No. 2 cylinder 71 is fixedly connected to a connecting rod 72, and the connecting rod 72 is fixedly connected to a No. 1 slide rail 73, and two No. 1 racks 74 are slidably connected to the No. 1 slide rail 73, each No. 1 rack 74 is meshed with a No. 1 gear 75, and the No. 1 gear 75 is fixedly connected to the spray gun 42. A limiting plate 76 is provided at the lower end of the No. 1 gear 75. It should be noted that the setting of the limiting plate 76 can make the No. 1 rack 74 and the No. 1 gear 75 always remain in a meshing state, and the No. 1 rack 74 will not be separated from the No. 1 gear 75 due to the movement of the spray gun 42. The limiting plate 76 is rotationally connected to the spray gun 42, and the No. 1 rack 74 is slidably connected to the limiting plate 76.

[0042] Specifically, by starting the No. 2 cylinder 71, the connecting rod 72 is driven to move, the connecting rod 72 drives the No. 1 slide rail 73 to move, the No. 1 slide rail 73 drives the No. 1 rack 74 to move, the movement of the No. 1 rack 74 causes the No. 1 gear 75 to rotate, and the No. 1 gear 75 drives the spray gun 42 to rotate. At this point, it is convenient to make the No. 1 nozzle 43 always aligned with the arc surface of the flow surface of the claw-type vacuum pump chamber to ensure the uniformity of spraying.

[0043] In this embodiment, a No. 1 distance sensor 5 and a No. 2 distance sensor 6 are provided on the spray gun 42, and a controller is provided on the spray chamber 1. It should be noted that the controller controls the moving mechanism, the spacing adjustment component and the rotating mechanism through the sensor 6, which is the prior art and is used without describing the control process in detail.

[0044] Specifically, the distance between the No. 1 nozzle 43 and the inner wall of the flow surface of the claw-type vacuum pump chamber is measured by the No. 2 distance sensor 6, and the distance between the No. 1 nozzle 43 on the two spray guns 42 and the side wall of the claw-type vacuum pump is adjusted by the controller. At the same time, during the spraying process, the rotating mechanism can drive the spray gun 42 to always face the side wall of the claw-type vacuum pump, and the distance between the No. 2 nozzle 47 and the bottom inner wall of the flow surface of the claw-type vacuum pump chamber is measured by the No. 1 distance sensor 5, and the No. 2 nozzle 47 on the spray gun 42 can be driven by the controller to always maintain a certain distance from the bottom inner wall of the flow surface of the claw-type vacuum pump chamber.

[0045] This embodiment realizes the ability to adjust the distance between the No. 1 nozzle 43 and the No. 2 nozzle 47 and the flow surface of the pump chamber so that they always maintain a fixed distance, thereby improving the uniformity of spraying and avoiding the problem of paint waste or insufficient spraying due to improper distance.

[0046] Embodiment 2:

[0047] On the basis of embodiment one, the wiping mechanism 8 includes a movable seat 83 and a rotating assembly and a material discharge assembly arranged on the movable seat 83. The material discharge assembly includes a fixed rod 85 fixedly connected to the movable seat 83. The upper end of the fixed rod 85 is fixedly connected to a No. 2 rack 851. The No. 2 rack 851 is meshed with a No. 2 gear 852. The No. 2 gear 852 is internally fixedly connected to a transmission shaft 853, and the transmission shaft 853 is fixedly connected to a baffle 854.

[0048] Specifically, when the spray mechanism 4 moves down to the inner cavity of the flow surface of the vacuum pump chamber, the spray mechanism 4 drives the wiping mechanism 8 to move downward. When part of the brush 845 contacts the outer wall, this part of the brush 845 drives the delivery tube 843 to slide upward relative to the movable seat 83, and squeezes the return spring 86 between the No. 1 connecting plate 87 and the movable seat 83. The delivery tube 843 drives the transfer tube 844 and the No. 2 connecting plate 88 to move upward, thereby causing the No. 2 gear 852 to rotate along the No. 2 rack 851. The second gear 852 drives the transmission shaft 853 to rotate, and the transmission shaft 853 drives the baffle 854 to rotate so that the cleaning solution inside the cleaning liquid storage box 89, which should be noted that the cleaning solution is a reagent that can remove polymer coatings, flows from the second hose 810 to the inside of the transfer tube 844, and soaks the brush 845 from the delivery tube 843. The part of the brush 845 that is not in contact with the outer wall of the vacuum pump is not squeezed, causing the baffle 854 to block the cleaning solution above the baffle 854.

[0049] In this embodiment, the rotating component includes a No. 2 connecting plate 88, on which a No. 3 driving motor 84 is arranged, and the output end of the No. 3 driving motor 84 is fixedly connected to a driving gear 841, and a plurality of equally distributed conveying tubes 843 are slidably connected to the movable seat 83, each conveying tube 843 is fixedly connected to a driven gear 842, and the driving gear 841 is meshed with one of the driven gears 842, and the upper end of each conveying tube 843 is rotatably connected to a transfer tube 844, and a plurality of transfer tubes 844 are fixedly arranged on the No. 2 connecting plate 88, and a transmission shaft 853 is rotatably connected to the transfer tube 844, and a No. 1 connecting plate 87 is rotatably connected to the conveying tube 843, and a reset spring 86 is sleeved on the conveying tube 843, and the reset spring 86 is arranged between the movable seat 83 and the reset spring 86, and a brush 845 is arranged at the lower end of the conveying tube 843.

[0050] In this embodiment, by starting the No. 3 driving motor 84 to drive the driving gear 841 to rotate, the driving gear 841 drives the driven gear 842 to rotate, and the multiple driven gears 842 are meshed and connected and rotate at the same time. At this point, the polymer coating sprayed onto the outer wall of the vacuum pump by the spraying mechanism 4 is washed away by the brush 845 and the cleaning solution.

[0051] In this embodiment, a cleaning liquid storage box 89 is further provided on the spraying room 1 , and the cleaning liquid storage box 89 is connected to the transfer tube 844 through the No. 2 hose 810 .

[0052] In this embodiment, a connecting shaft 82 is fixedly connected to the movable seat 83, a rotating ring 81 is fixedly connected to the connecting shaft 82, and the rotating ring 81 is sleeved on the outside of the spray gun 42, so that the spray gun 42 drives the rotating ring 81 to move together during the left and right movement, and drives the brush 845 thereon to move together.

[0053] This embodiment realizes that the polymer coating that may be attached to the outer wall of the vacuum pump during the spraying process is completely washed off by using the brush 845 and the cleaning solution, thereby preventing the polymer coating from being attached to the outer wall of the claw-type vacuum pump and affecting the appearance.

[0054] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A spraying process for the flow-through surface of a claw pump chamber, characterized in that: The following steps are involved: S1. Place the claw-type vacuum pump inside the spray chamber (1) and directly below the spray mechanism (4). Then, drive the spray gun (42) through the moving mechanism (3) to insert into the pump chamber of the claw-type vacuum pump, and adjust the distance between the first nozzle (43) and the flow side wall of the pump chamber of the claw-type vacuum pump, and the distance between the second nozzle (47) and the inner surface of the flow bottom of the pump chamber of the claw-type vacuum pump; S2, adjusting the electromagnetic valve (44) so ​​that the first nozzle (43) is in an open state, while the second nozzle (47) is closed, and then the polymer composite material is sprayed onto the flow side wall surface of the pump chamber of the claw type vacuum pump through the first nozzle (43) in the spraying mechanism (4), adjusting the electromagnetic valve (44) so ​​that the second nozzle (47) is opened, while the first nozzle (43) is closed, and then the second nozzle (47) is driven by the moving mechanism (3) to spray one by one and comprehensively from the side wall of the claw type vacuum pump to the middle part; S3, the polymer coating sprayed onto the outer wall of the vacuum pump by the spraying mechanism (4) is washed off by the wiping mechanism (8).

2. The spraying process for the flow-through surface of a claw pump chamber according to claim 1 is characterized in that: The spraying equipment comprises a spraying room (1), and also comprises The moving mechanism (3) is arranged inside the spraying chamber (1) and is used to drive the spraying mechanism (4) to move so as to spray different parts of the flow-through surface of the pump chamber of the claw-type vacuum pump; A spraying mechanism (4) is arranged on the moving mechanism (3) and is used for spraying the flow-through surface of the pump chamber of the claw-type vacuum pump; A rotating mechanism (7) is arranged on the spraying mechanism (4) and is used to adjust the spraying direction of the spraying mechanism (4); The wiping mechanisms (8) are provided in two groups and are symmetrically arranged on the spraying mechanism (4) for wiping the excess polymer composite material sprayed onto the outer wall of the claw-type vacuum pump by the spraying mechanism (4).

3. The spray coating process for the flow-through surface of the claw pump chamber according to claim 2 is characterized in that: The wiping mechanism (8) comprises a movable seat (83) and a rotating assembly and a material discharge assembly arranged on the movable seat (83); the material discharge assembly comprises a fixed rod (85) fixedly connected to the movable seat (83); a second rack (851) is fixedly connected to the upper end of the fixed rod (85); the second rack (851) is meshed with a second gear (852); a transmission shaft (853) is fixedly connected inside the second gear (852); and a baffle (854) is fixedly connected to the transmission shaft (853).

4. The spray coating process for the flow-through surface of the claw pump chamber according to claim 3 is characterized in that: The rotating assembly comprises a second connecting plate (88), a third driving motor (84) is arranged on the second connecting plate (88), an output end of the third driving motor (84) is fixedly connected to a driving gear (841), and a plurality of equally spaced delivery pipes (843) are slidably connected to the movable seat (83), each of the delivery pipes (843) is fixedly connected to a driven gear (842), and the driving gear (841) is meshed with one of the driven gears (842), and each of the delivery pipes (84 3) are rotatably connected to a transfer tube (844) at their upper ends, a plurality of the transfer tubes (844) are fixedly arranged on a No. 2 connecting plate (88), and the transmission shaft (853) is rotatably connected to the transfer tube (844), a No. 1 connecting plate (87) is rotatably connected to the delivery tube (843), a return spring (86) is sleeved on the delivery tube (843), and the return spring (86) is arranged between the movable seat (83) and the return spring (86), and a brush (845) is arranged at the lower end of the delivery tube (843).

5. The spray coating process for the flow-through surface of the claw pump chamber according to claim 3 is characterized in that: The moving mechanism (3) comprises a No. 1 cylinder (31) fixedly connected to the inside of the spray chamber (1); the output end of the No. 1 cylinder (31) is fixedly connected to a lifting frame (32); and the inside of the spray chamber (1) is fixedly connected to a guide shaft (2); the lifting frame (32) and the guide shaft (2) are slidably arranged; a No. 1 driving motor (33) is arranged on the lifting frame (32); the output end of the No. 1 driving motor (33) is fixedly connected to a screw rod (34); and the screw rod (34) is rotatably connected to the lifting frame (32); the screw rod (34) is threadedly connected to a support frame (36); and a slide groove (35) is arranged on the lifting frame (32); and the support frame (36) is slidably connected to the slide groove (35).

6. The spray coating process for the flow-through surface of the claw pump chamber according to claim 5 is characterized in that: The spraying mechanism (4) comprises a spacing adjustment component and a spray gun (42), wherein the spacing adjustment component comprises a No. 2 driving motor (41) fixedly connected to a support frame (36), wherein an output end of the No. 2 driving motor (41) is fixedly connected to a bidirectional screw rod (412), wherein two sliders (411) are threadedly connected to the bidirectional screw rod (412), wherein the sliders (411) and the spray gun (42) are rotatably arranged, and the spray gun (42) is fixedly connected to the sliders (411), wherein a No. 1 nozzle (43) and a No. 2 nozzle (47) are arranged through the No. 2 driving motor (41), and the No. 1 nozzle (43) and the No. 2 nozzle (47) are arranged vertically, and the spray gun (42) is connected to a paint box (45) through a No. 1 hose (46), and the paint box (45) is arranged on the spraying room (1).

7. The spray coating process for the flow-through surface of the claw pump chamber according to claim 6 is characterized in that: The rotating mechanism (7) comprises a No. 2 cylinder (71) fixedly connected to the support frame (36); the output end of the No. 2 cylinder (71) is fixedly connected to a connecting rod (72); the connecting rod (72) is fixedly connected to a No. 1 slide rail (73); and the No. 1 slide rail (73) is slidably connected to two No. 1 racks (74); each of the No. 1 racks (74) is meshed with a No. 1 gear (75); the No. 1 gear (75) is fixedly connected to the spray gun (42); a limit plate (76) is provided at the lower end of the No. 1 gear (75); the limit plate (76) is rotatably connected to the spray gun (42); and the No. 1 rack (74) is slidably connected to the limit plate (76).

8. The spray coating process for the flow-through surface of a claw pump chamber according to claim 4 is characterized in that: The spray chamber (1) is also provided with a cleaning liquid storage box (89), and the cleaning liquid storage box (89) is connected to the transfer tube (844) via a No. 2 hose (810).

9. The spray coating process for the flow-through surface of the claw pump chamber according to claim 6, characterized in that: The movable seat (83) is fixedly connected to a connecting shaft (82), the connecting shaft (82) is fixedly connected to a rotating ring (81), and the rotating ring (81) is sleeved on the outside of the spray gun (42).

10. The spray coating process for the flow-through surface of a claw pump chamber according to claim 1, characterized in that: The spray gun (42) is provided with a first distance sensor (5) and a second distance sensor (6), and the spray chamber (1) is provided with a controller.

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