CN112720276A

CN112720276A - Sand blasting machine convenient to overhaul

Info

Publication number: CN112720276A
Application number: CN202011579825.5A
Authority: CN
Inventors: 李江; 尚耀
Original assignee: Changzhou Taisheng Mechanical Equipment Co ltd
Current assignee: Changzhou Taisheng Mechanical Equipment Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-04-30

Abstract

The sand blasting mechanism comprises a sand distributor and a plurality of sand blasting assemblies connected with the sand distributor, and the sand distributor is communicated with the feeding mechanism; still include flow monitoring mechanism, flow monitoring mechanism is including the flow monitor and the alarm of electricity connection, and the flow monitor is installed in sandblast subassembly department. This application has through the abrasive flow of the sandblast subassembly department that the monitoring corresponds or judge through dividing the sand ware air supplement mouth pressure differential whether the sandblast subassembly that corresponds blocks up or the effect damaged appears.

Description

Sand blasting machine convenient to overhaul

Technical Field

The application relates to the field of metal surface treatment, in particular to a sand blasting machine convenient to overhaul.

Background

At present, a sand blasting machine is a device which takes compressed air as power, and presses abrasive into a sand blasting pipe through a sand outlet valve and ejects the abrasive through a spray gun by working pressure built in an abrasive tank through the compressed air, so that the abrasive is sprayed to a processed surface and the surface quality of an object is improved. The sand blasting machine can ensure that the surface of the workpiece has certain cleanliness and different roughness, and the mechanical property of the surface of the workpiece is improved, so that the fatigue resistance of the workpiece can be improved, the adhesion between the workpiece and the coating can be conveniently increased, and the durability of the coating can be prolonged.

Automatic sand blasting machine among the correlation technique is when the sandblast, and the abrasive material is sent to and divides sand in sand distributor department from the abrasive material jar, divides sand distributor department to connect a plurality of ejection of compact joints, and ejection of compact joint department is connected with the sand blasting pipe, and the one side that the sand blasting pipe kept away from and divides the sand distributor sets up the spray gun, and the junction of spray gun and sand blasting pipe is connected with the trachea of intercommunication compressed air. The abrasive flowing into the sand separator is sucked into the sand blasting pipe by compressed gas, and each spray gun performs sand blasting treatment on the workpiece from different angles. A small air supplement port is generally arranged at a discharging joint, so that the sand flowing is smooth. In order to reduce the influence of sand blasting on the working environment, each sand blasting part and each workpiece need to be positioned in a closed space.

In view of the above-mentioned related art, the inventor believes that due to the fact that the number of the spray guns is large and the blasting components are located in the closed space, when impurities block one or more of the blasting pipes or one or more of the blasting pipes are damaged, the blasting pipes are difficult to find in the working process of the blasting machine.

Disclosure of Invention

In order to improve difficult discovery in the sand blasting machine working process and have sand blasting pipe to block up or damaged problem, this application provides a sand blasting machine convenient to overhaul.

The application provides a sand blasting machine convenient to overhaul adopts following technical scheme:

a sand blasting machine convenient to overhaul comprises a feeding mechanism, a sand blasting mechanism and a sand blasting cabin, wherein the sand blasting mechanism is installed in the sand blasting cabin, the feeding mechanism is installed outside the sand blasting cabin, the sand blasting mechanism comprises a sand distributor and a plurality of sand blasting assemblies connected with the sand distributor, and the sand distributor is communicated with the feeding mechanism; still include flow monitoring mechanism, flow monitoring mechanism is including the flow monitor and the alarm of electricity connection, the flow monitor is installed in sandblast subassembly department.

Through adopting above-mentioned technical scheme, the abrasive material passes through feeding mechanism and sends into sand distributor department, and the abrasive material of sand distributor department reposition of redundant personnel can be spout through each sandblast subassembly. The flow monitoring mechanism is used for monitoring the abrasive flow at the sand blasting assembly, if part of the sand blasting assemblies are blocked, the abrasive can not continuously flow to the blocked sand blasting assembly, and the flow monitoring mechanism monitors the abrasive flow or the gas pressure difference at the corresponding sand blasting assembly to judge whether the corresponding sand blasting assembly is blocked or damaged. If the flow monitor monitors that the abrasive flow or the gas pressure difference at the corresponding sand blasting assembly is abnormal, the corresponding alarm can give an alarm to remind a worker which group of sand blasting assemblies are blocked, so that the sand blasting assembly is convenient to overhaul.

Optionally, the sandblast subassembly includes ejection of compact joint, sandblast pipe, spray gun and trachea, ejection of compact joint one end with divide the sand ware to be connected, the other end with the sandblast union coupling, the sandblast pipe is kept away from the one end of dividing the sand ware and is connected the spray gun, tracheal one end intercommunication compressed air, the other end with the spray gun intercommunication.

Through adopting above-mentioned technical scheme, the ejection of compact connects and installs on dividing the sand ware, divides the sand ware to connect the installation sand blasting pipe that can be comparatively convenient through the ejection of compact. Because compressed air is introduced into the air pipe and is used as power, negative pressure can be formed in the spray gun through high-speed movement of air flow, and accordingly abrasive materials can be sucked into the spray gun through the sand blasting pipe and ejected through the spray gun.

Optionally, the flow monitor is a solid flow monitor, and the solid flow monitor is installed at the discharge joint or on the sand blast pipe.

Through adopting above-mentioned technical scheme, the flow of the interior abrasive material of flow direction sand blasting pipe can directly be monitored to the solid flow monitor, if the sand blasting pipe blocks up, then the difficult or unable abrasive material in the sand separator of absorbing through the sand blasting pipe of spray gun, then the interior abrasive material flow of sand blasting pipe can appear unusually compared in the interior flow of normal sand blasting pipe, and whether the alarm can report to the police according to the monitoring data judgement of solid flow monitor. If appear brokenly the hole on the abrasive blasting pipe, the negative pressure of spray gun department can lead to outside air to be inhaled in the abrasive blasting pipe from brokenly the hole department this moment to also can reduce the spray gun to the suction of abrasive material, and then also can lead to the abrasive material flow in the abrasive blasting pipe to appear unusually, so the alarm also can report to the police when the hole appears in the abrasive blasting pipe. The solid flow monitor directly monitors the sand blasting flow of the abrasive in the sand blasting pipe, so the monitoring result is more accurate.

Optionally, an air supply port is formed in the discharge joint, the air supply port is connected with an air supply pipe, the flow monitor adopts a pressure difference monitor, and the pressure difference monitor is installed at the air supply pipe.

Through adopting above-mentioned technical scheme, can make the abrasive material in the sand distributor more smooth entering sand blasting intraductally through the supply air gap. When the sandblast pipe is blocked or damaged, the air inlet flow at the air supply opening at the discharge joint corresponding to the sandblast pipe is easy to be abnormal, so that the internal and external pressure difference of the air supply opening is abnormal, and the monitoring pressure difference monitor can monitor whether the corresponding sandblast pipe is blocked or damaged by monitoring whether the internal and external pressure difference at the air supply opening is normal or not. The difficulty of the gas flow monitoring technology is generally lower than that of solid flow monitoring, so the cost of the differential pressure monitor is lower.

Optionally, the sandblasting cabin is connected with installation mechanism, installation mechanism includes drive assembly and installation component, drive assembly installs in sandblasting cabin inner wall department, installation component installs on drive assembly, the spray gun is installed on installation component.

Through adopting above-mentioned technical scheme, the position that the installation component is used for fixed and location spray gun, the orientation that the spray gun can the multi-angle of being convenient for need be by the work piece sandblast of sand blasting. The driving assembly is used for driving the mounting assembly to move in the sand blasting cabin, so that the position of the spray gun is changed, and the spray gun can perform sand blasting on a workpiece comprehensively.

Optionally, the driving assembly comprises a hydraulic oil cylinder, a synchronous gear, a transmission rod and a synchronous rack, one end of the hydraulic oil cylinder is fixed on the sand blasting cabin, the other end of the hydraulic oil cylinder is connected with the transmission rod, and the transmission rod is located below the sand separator; the synchronous racks are arranged on the side walls at the two ends of the transmission rod, the central shaft of the synchronous gear is rotationally connected with the inner wall of the sand blasting cabin, and the synchronous gear is meshed with the corresponding synchronous rack; the installation component comprises an installation net, the installation net is installed on one side, far away from the sand separator, of the transmission rod, and the spray gun is inserted into a mesh hole of the installation net.

Through adopting above-mentioned technical scheme, hydraulic cylinder can comparatively stable drive transfer line translation, and the transfer line translation can drive synchronous rack displacement to drive synchronous gear synchronous rotation, through the meshing of synchronous gear and synchronous rack, make the displacement at transfer line both ends comparatively balanced, thereby make the displacement of transfer line comparatively steady, and then can reduce the hidden danger that the transfer line rocked. The installation net can be synchronously displaced with the transmission rod by being connected with the transmission rod, and the spray gun can be fixed and positioned by being inserted into the meshes of the installation net. The spray gun can move along with the movement of the mounting net, so that the workpiece can be subjected to sand blasting comprehensively. Because the displacement of transfer line is comparatively steady, so the difficult landing from the installation net of spray gun is convenient for promote the stability of spray gun installation.

Optionally, the mounting assembly further comprises a mounting rod and a mounting block, one end of the mounting rod is connected with one side of the sand separator, which faces the transmission rod, the other end of the mounting rod is connected with the mounting block, a mounting groove is formed in one side of the mounting block, which faces the transmission rod, and the mounting block is sleeved on the outer wall of the transmission rod through the mounting groove; the mounting groove is connected with a clamping block, the transmission rod is provided with a clamping groove along the length direction of the transmission rod, and the clamping block is embedded in the clamping groove and connected with the clamping groove in a sliding mode.

Through adopting above-mentioned technical scheme, the fixture block makes the connection of drive link comparatively stable with being connected of draw-in groove, and the directional displacement of the transfer link of being convenient for.

Optionally, the installation net is an arc net, and the middle of the installation net protrudes towards one side of the sand separator.

Through adopting above-mentioned technical scheme, the arc net can be so that insert the angle diverse of the spray gun of installation net, and can make the spray gun gather together towards work piece department to be convenient for comparatively comprehensive carry out sand blasting to the work piece.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the flow monitor and the alarm, the effects of facilitating the judgment of whether the sand blasting pipe is blocked or damaged by workers and the judgment of which sand blasting pipe is blocked or damaged by the workers can be achieved;

2. through the arrangement of the mounting assembly, the mounting assembly can be used for conveniently mounting the spray gun and positioning the mounting angle of the spray gun, so that the sand blasting treatment effect on the workpiece can be conveniently and comprehensively achieved;

3. through drive assembly's setting, can play the position of being convenient for change spray gun for the work piece to be convenient for more comprehensive carry out sand blasting's effect to the work piece.

Drawings

Fig. 1 is a schematic view of the overall structure of a blasting machine according to embodiment 1 of the present application.

Fig. 2 is a schematic sectional structure view of a blasting machine according to embodiment 1 of the present application.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a schematic view of a connection structure of the mounting rod, the mounting block and the transmission rod in embodiment 1 of the present application.

Fig. 5 is a schematic sectional structure view of a blasting machine according to embodiment 2 of the present application.

Description of reference numerals: 1. a sandblasting cabin; 11. a support leg; 2. a feeding mechanism; 21. an abrasive tank; 22. a feed pipe; 23. a stirring motor; 24. a stirring shaft; 25. a stirring rod; 3. a sand blasting mechanism; 31. a sand separator; 32. a discharge joint; 321. an air supply opening; 33. air supplementing pipes; 34. a sand blasting pipe; 35. a spray gun; 36. an air tube; 4. a flow monitoring mechanism; 41. a differential pressure monitor; 42. a solids flow monitor; 43. an alarm; 5. an installation mechanism; 51. a hydraulic cylinder; 52. a transmission rod; 521. a card slot; 53. a synchronous rack; 54. a synchronizing gear; 56. mounting rods, 57 and mounting blocks; 571. mounting grooves; 572. a clamping block; 58. installing a net; 6. a clamping mechanism; 61. a telescopic cylinder; 62. a claw; 7. a discharge pipe; 71. and a collection box.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

Example 1

The embodiment of the application discloses sand blasting machine convenient to overhaul. Referring to fig. 1 and 2, the sand blasting machine convenient to overhaul comprises a sand blasting cabin 1, a feeding mechanism 2, a sand blasting mechanism 3, a flow monitoring mechanism 4, an installation mechanism 5 and a clamping mechanism 6, wherein supporting legs 11 are arranged at the bottom of the sand blasting cabin 1, and the supporting legs 11 are supported on the ground. The feeding structure is arranged at the top of the sand blasting cabin 1, the sand blasting mechanism 3, the installation mechanism 5 and the clamping mechanism 6 are arranged in the sand blasting cabin 1, and the flow monitoring mechanism 4 is arranged at the sand blasting mechanism 3. Abrasive material is sent into sandblast mechanism 3 through feeding mechanism 2 in, installation mechanism 5 is located sandblast mechanism 3 below and is used for fixing a position sandblast mechanism 3, and fixture 6 is located installation mechanism 5's below, and is used for the centre gripping work piece, and the abrasive material is used sandblast mechanism 3 to spray on the work piece. The flow monitoring mechanism 4 can monitor the blocking condition of the sand blasting mechanism 3 in real time in the working process of the sand blasting machine.

Referring to fig. 2, feeding mechanism 2 includes abrasive tank 21, and abrasive tank 21 installs in sandblast cabin 1 top, and the one end that sandblast cabin 1 was kept away from to abrasive tank 21 is connected with inlet pipe 22 and agitator motor 23, and abrasive tank 21 communicates with sandblast cabin 1 towards the one end of sandblast cabin 1. The output shaft of stirring motor 23 is connected with (mixing) shaft 24, and (mixing) shaft 24 is located the axis department of abrasive tank 21 and being located abrasive tank 21 in the abrasive tank 21, and the axial of (mixing) shaft 24 is connected with puddler 25. Thereby agitator motor 23 drive (mixing) shaft 24 rotates and drives puddler 25 and rotate, and puddler 25 rotates and can stir the abrasive material, reduces the condition emergence of abrasive material caking. Abrasive enters the abrasive tank 21 from the feeding pipe 22, and flows into the blasting chamber 1 after being stirred in the abrasive tank 21.

Referring to fig. 2 and 3, the blasting mechanism 3 includes a sand separator 31 and a plurality of blasting assemblies mounted on the sand separator 31, and the sand separator 31 is mounted below the abrasive tank 21 and communicates with the abrasive tank 21. The sandblast subassembly includes ejection of compact joint 32, sandblast pipe 34, spray gun 35 and trachea 36, and ejection of compact joint 32 one end is connected with sand separator 31, and the other end is connected with sandblast pipe 34, and sandblast pipe 34 is kept away from the one end of separating sand separator 31 and is connected spray gun 35, and trachea 36's one end intercommunication compressed air, the other end and spray gun 35 intercommunication. The negative pressure can be formed in the spray gun 35 by the high-speed movement of the air flow by taking the compressed air as power, so that the abrasive in the sand separator 31 can be sucked into the spray gun 35 through the sand blasting pipe 34 and is ejected through the spray gun 35.

Referring to fig. 2 and 3, the flow monitoring mechanism 4 includes a flow monitor and an alarm 43 electrically connected, the flow monitor being mounted at the blasting assembly, and the alarm 43 being mounted on top of the blasting vessel 1. In this embodiment, the flow monitor adopts a pressure difference monitor 41, an air supply port 321 is formed in the side wall of the discharge connector 32, the air supply port 321 is connected to the air supply pipe 33, and the pressure difference monitor 41 is installed on the air supply pipe 33. The air is supplemented into the sand separator 31 through the air supplementing opening 321, so that the abrasive in the sand separator 31 can enter the sand blasting pipe 34 more smoothly. When the sand blasting pipe 34 is blocked or damaged, the air inlet flow at the air supply port 321 of the discharge joint 32 corresponding to the sand blasting pipe 34 is reduced, so that the pressure difference monitor 41 can monitor whether the corresponding sand blasting pipe 34 is blocked or damaged by monitoring whether the internal and external pressure difference at the air supply pipe 33 is normal, and the alarm 43 can start an alarm program according to the abnormal monitoring data of the pressure difference monitor 41 to inform a worker.

Referring to fig. 2 and 3, the mounting mechanism 5 includes a driving assembly mounted at the inner wall of the blasting cabin 1, and a mounting assembly mounted on the driving assembly, on which the spray gun 35 is mounted. Specifically, the driving assembly comprises a hydraulic oil cylinder 51, a transmission rod 52, a synchronous rack 53 and a synchronous gear 54, the hydraulic oil cylinder 51 is horizontally arranged, one end of the hydraulic oil cylinder 51 is connected with the inner wall of the sand blasting cabin 1, the transmission rod 52 is coaxially arranged with the hydraulic oil cylinder 51, and a piston rod of the hydraulic oil cylinder 51 is connected with one end of the transmission rod 52. The synchronous racks 53 are mounted on the side walls at the two ends of the transmission rod 52, two synchronous gears 54 are arranged, the central shaft of each synchronous gear 54 is rotatably connected with the inner wall of the sand blasting cabin 1, and the synchronous gears 54 are meshed with the corresponding synchronous racks 53. The piston cylinder of the hydraulic oil cylinder 51 can stretch to drive the transmission rod to displace, and the transmission rod 52 drives the synchronous rack 53 to displace, so as to drive the synchronous gear 54 to synchronously rotate, and therefore, the displacement of the transmission rod 52 is relatively balanced and stable.

Referring to fig. 3 and 4, the mounting assembly includes a mounting rod 56, a mounting block 57 and a mounting net 58, the mounting rod 56 is vertically disposed and located below the sand separator 31, one end of the mounting rod 56 is connected with the sand separator 31, and the other end is connected with the mounting block 57. The mounting block 57 is located on one side of the transmission rod 52 facing the sand separator 31, and a mounting groove 571 is formed on one side of the mounting block 57 facing the transmission rod 52, and the mounting groove 571 is a through groove. The mounting block 57 is sleeved on the transmission rod 52 through a mounting groove 571, a set of opposite side walls of the mounting block 57 are connected with clamping blocks 572, a clamping groove 521 is formed in the peripheral wall of the transmission rod 52 along the axial direction of the transmission rod 52, and two clamping grooves 521 are arranged and are symmetrically arranged along the axis of the transmission rod. When the mounting block 57 is sleeved on the transmission rod 52, the locking block 572 is embedded in the locking slot 521 and can extend along the length direction of the locking slot 521. The transmission rod 52 is positioned and mounted to the blasting cabin 1 by means of the hydraulic ram 51 and the mounting rod 56. The mounting net 58 is mounted on one side of the transmission rod 52 far away from the sand separator 31, and the spray gun 35 is inserted into the mesh hole of the mounting net 58. The installation net 58 in this embodiment adopts the arc net, and the middle part of installation net 58 is protruding towards one side of sand distributor 31 for the angle of spray gun 35 can gather together but towards work piece department by the diverse, thereby comparatively comprehensive carry out sand blasting to the work piece.

Referring to fig. 2, the clamping mechanism 6 employs a pair of telescopic cylinders 61, the telescopic cylinders 61 are mounted on a set of oppositely arranged inner walls of the blasting cabin 1, and jaws 62 are connected to piston rods of the telescopic cylinders 61, so as to clamp a workpiece through the jaws 62. By the extension and contraction of the telescopic cylinder 61, the distance between the two jaws 62 can be changed, thereby facilitating the clamping of workpieces of different sizes. The transmission rod 52 can drive the mounting net 58 to move, so that the spray gun 35 is driven to move above the workpiece, and therefore the workpiece can be subjected to sand blasting more comprehensively.

Referring to fig. 2, the bottom of the sand blasting cabin 1 is connected with a discharge pipe 7, one end of the discharge pipe 7, which is far away from the sand blasting cabin 1, is in threaded connection with a collection box 71, and the abrasive material which is polished on the workpiece can fall into the collection box 71 through the discharge pipe 7. After the workpiece is subjected to sand blasting treatment, the abrasive accumulated in the sand blasting cabin 1 can be swept into the discharge pipe 7, so that the abrasive falls into the collection box 71. The abrasive of the collection tank 71 can be reused.

The implementation principle of the sand blasting machine convenient to overhaul in the embodiment of the application is as follows: the telescopic cylinder 61 is started firstly, so that the piston rod completely extends into the sleeve of the telescopic cylinder 61, a workpiece is conveniently placed to the maximum extent, and then the telescopic cylinder 61 is started again, so that the two clamping jaws 62 move towards the workpiece in opposite directions and clamp the workpiece. Then, the position of the spray gun 35 on the mounting net 58 is adjusted according to the model and the size of the workpiece, thereby adjusting the blasting range of the spray gun 35. Since the mounting net 58 is an arc net, the spray guns 35 can be gathered toward the workpiece side even if the mounting angles are different from each other. In the case of checking that the abrasive in the tank 21 is sufficient, the door of the spray box can be closed, the stirring motor 23 and the hydraulic cylinder 51 can be started, and the compressed air can be continuously introduced into the air pipe 36.

The abrasive material flows to the sand separator 31 after being stirred, negative pressure is formed in the spray gun 35 due to the compressed air, and the abrasive material is continuously sucked into the sand blasting pipe 34 and is shot to the workpiece through the spray gun 35. If the sand blasting pipe 34 is blocked or broken, the spray gun 35 can hardly or cannot suck abrasive materials, the air flow or the pressure at the air supplementing pipe 33 is abnormal, and the pressure difference monitor 41 can feed back abnormal data to the alarm 43, so that the alarm 43 can give an alarm and inform a worker to timely and accurately repair the blocked or broken sand blasting pipe 34.

In the sand blasting process, the hydraulic oil cylinder 51 can drive the transmission rod 52 and the mounting net 58 to move directionally, so that the position of the spray gun 35 is changed, and the spray gun 35 can perform sand blasting treatment on the side edge of the workpiece to a greater extent. Part of the abrasive can be accumulated on the workpiece or at the bottom of the blasting cabin 1 during the blasting process, and part of the abrasive can directly fall into the discharge pipe 7. After one-time sand blasting is finished, the abrasive on the workpiece and at the bottom of the sand blasting cabin 1 can be swept into the discharge pipe 7. The abrasives flowing into the discharge pipe 7 can be accumulated in the collection tank 71 to wait for secondary use. After the primary sand blasting is finished, the workpiece can be turned over, and sand blasting treatment is conveniently carried out on other surfaces of the workpiece.

Example 2

Referring to fig. 5, the present embodiment is different from embodiment 1 in that the air supply opening 321 is not provided with the air supply pipe 33, and the flow monitor is the solid flow monitor 42, and the solid flow monitor 42 is installed at the discharge joint 32 or on the blast pipe 34. The solids flow monitor 42 in this embodiment is mounted on the blast pipe 34.

The implementation principle of the sand blasting machine convenient to overhaul in the embodiment of the application is as follows: the solid flow monitor 42 can directly monitor the flow of the abrasive flowing into the sand blasting pipe 34, if the sand blasting pipe 34 is blocked, the spray gun 35 is difficult or cannot suck the abrasive in the sand separator 31 through the sand blasting pipe 34, the flow of the abrasive in the sand blasting pipe 34 is abnormal compared with the flow in the normal sand blasting pipe 34, and the alarm 43 can judge whether to alarm according to the monitoring data of the solid flow monitor 42. If the blast pipe 34 is provided with a broken hole, the negative pressure at the position of the spray gun 35 can cause the outside air to be sucked into the blast pipe 34 from the broken hole, so that the suction of the spray gun 35 to the abrasive can be reduced, the flow of the abrasive in the blast pipe 34 is abnormal, and the alarm 43 can give an alarm when the blast pipe 34 is broken.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A sand blasting machine convenient to overhaul comprises a feeding mechanism (2), a sand blasting mechanism (3) and a sand blasting cabin (1), wherein the sand blasting mechanism (3) is installed in the sand blasting cabin (1), the feeding mechanism (2) is installed outside the sand blasting cabin (1), the sand blasting mechanism (3) comprises a sand distributor (31) and a plurality of sand blasting assemblies connected with the sand distributor (31), and the sand distributor (31) is communicated with the feeding mechanism (2); the method is characterized in that: still include flow monitoring mechanism (4), flow monitoring mechanism (4) are including the flow monitor and the alarm (43) of electricity connection, the flow monitor is installed in sandblast subassembly department.

2. A readily serviceable sander as set forth in claim 1, wherein: the sandblast subassembly includes ejection of compact joint (32), sandblast pipe (34), spray gun (35) and trachea (36), ejection of compact joint (32) one end is connected with sand distributor (31), the other end with sandblast pipe (34) are connected, sandblast pipe (34) are kept away from the one end of sand distributor (31) and are connected spray gun (35), the one end intercommunication compressed air of trachea (36), the other end with spray gun (35) intercommunication.

3. A service-friendly sander as set forth in claim 2, wherein: the flow monitor adopts a solid flow monitor (42), and the solid flow monitor (42) is arranged at the discharge joint (32) or on the sand blasting pipe (34).

4. A service-friendly sander as set forth in claim 2, wherein: an air supply opening (321) is formed in the discharging connector (32), the air supply opening (321) is connected with an air supply pipe (33), the flow monitor adopts a pressure difference monitor (41), and the pressure difference monitor (41) is installed at the air supply pipe (33).

5. An easy to service sander as set forth in claim 3 or 4, wherein: sandblast cabin (1) is connected with installation mechanism (5), installation mechanism (5) are including drive assembly and installation component, drive assembly installs in sandblast cabin (1) inner wall department, installation component installs on drive assembly, spray gun (35) are installed on installation component.

6. An easy to service sander as set forth in claim 5, wherein: the driving assembly comprises a hydraulic oil cylinder (51), a synchronous gear (54), a transmission rod (52) and a synchronous rack (53), one end of the hydraulic oil cylinder (51) is fixed on the sand blasting cabin (1), the other end of the hydraulic oil cylinder is connected with the transmission rod (52), and the transmission rod (52) is positioned below the sand separator (31); the synchronous racks (53) are arranged on the side walls at the two ends of the transmission rod (52), the central shaft of the synchronous gear (54) is rotatably connected with the inner wall of the sand blasting cabin (1), and the synchronous gear (54) is meshed with the corresponding synchronous racks (53); the mounting assembly comprises a mounting net (58), the mounting net (58) is mounted on one side, away from the sand separator (31), of the transmission rod (52), and the spray gun (35) is inserted into a mesh hole of the mounting net (58).

7. An easy to service sander as set forth in claim 6, wherein: the mounting assembly further comprises a mounting rod (56) and a mounting block (57), one end of the mounting rod (56) is connected with one side, facing the transmission rod (52), of the sand separator (31), the other end of the mounting rod is connected with the mounting block (57), a mounting groove (571) is formed in one side, facing the transmission rod (52), of the mounting block (57), and the mounting block (57) is sleeved on the outer wall of the transmission rod (52) through the mounting groove (571); a clamping block (572) is connected to the mounting groove (571), a clamping groove (521) is formed in the transmission rod (52) along the length direction of the transmission rod, and the clamping block (572) is embedded in the clamping groove (521) and connected with the clamping groove (521) in a sliding mode.

8. An easy to service sander as set forth in claim 6, wherein: the installation net (58) is an arc net, and the middle part of the installation net (58) is protruded towards one side of the sand separator (31).