Water-sand mixed sand blasting machine

Abstract

The utility model relates to sand blasting machine technical field, concretely relates to a water sand mixed sand blasting machine. The utility model provides a water sand mixed sand blasting machine, including machine warehouse, blast mechanism, flow guide mechanism and steam pipe, the front of machine warehouse forms a slope, the window and operating mouth are seted up on the slope, the outside of window is installed with observation window subassembly, the blast mechanism is installed in the top surface of machine warehouse, the flow guide mechanism includes flow guide box, the flow guide box is installed in the inner top wall of machine warehouse, forms the flow guide cavity in the flow guide box, the flow guide box with the slope between machine warehouse forms an air outlet. Downward blowing is formed to the high -level air outlet through flow guide box and slope, forms the sustained airflow barrier, effectively prevents the water vapor from rising to the observation window area, fundamentally solves the problem that the water vapor condensation leads to the sight blurred.

Description

Technical Field

[0001] This utility model relates to the field of sandblasting machine technology, specifically to a water-sand mixed sandblasting machine. Background Technology

[0002] The working process of a water-sand blasting machine begins with compressed air. A water pump precisely delivers water and sand to the mixing zone of the blasting gun. Inside the blasting gun or immediately adjacent to the nozzle, the pressurized sand flow, high-speed air flow, and water flow meet and mix through a specially designed three-way valve, forming a slurry mixture of water and sand particles. This high-speed water-sand slurry is then accelerated and sprayed onto the workpiece surface through the nozzle. The sand particles, under high-speed impact, remove rust, coatings, or dirt from the workpiece surface, playing the primary cleaning role. Meanwhile, the water encapsulating the sand particles effectively suppresses dust generated during the blasting process, greatly improving the working environment. It also cools the workpiece surface and reduces the abrasive breakage rate.

[0003] However, in actual operation, the water-sand blasting machine currently in operation generates water vapor inside the machine chamber. When the water vapor rises to the vicinity of the observation window, it obstructs the operator's view and causes inconvenience to operation. Utility Model Content

[0004] (I) The problem to be solved by this utility model is that in the actual operation of the current water-sand mixing sandblasting machine, water vapor will be generated in the machine chamber, and when the water vapor rises to the vicinity of the observation window, it will obstruct the operator's vision and cause inconvenience to operation.

[0005] (II) Technical Solution A water-sand blasting machine includes a machine chamber, a blower mechanism, a flow guiding mechanism, and a steam outlet pipe; the front of the machine chamber has an inclined surface, and a window and an operating port are provided on the inclined surface, with an observation window assembly installed on the outside of the window; The blower mechanism is installed on the top surface of the nacelle. The air guide mechanism includes an air guide box, which is installed on the inner top wall of the nacelle. An air guide cavity is formed inside the air guide box. An air outlet is formed between the air guide box and the inclined surface of the nacelle. The air outlet is connected to the air guide cavity and is higher than the observation window assembly. The air outlet's air outlet direction is towards the observation window assembly. The blower mechanism is used to blow air into the air guide cavity. The steam outlet pipe is installed on the back of the nacelle and is connected to the interior of the nacelle.

[0006] According to one embodiment of the present invention, the blower mechanism includes a protective cover and a fan. A through hole is provided on the top surface of the machine compartment, the fan is installed at the through hole, the protective cover is installed on the top surface of the machine compartment, a sealed cavity is formed inside the protective cover, the fan is located inside the sealed cavity, an air inlet is provided on the protective cover, and the sealed cavity, the through hole and the guide cavity are connected in sequence.

[0007] According to one embodiment of the present invention, a cleaning mechanism is included, the cleaning mechanism including a plurality of cleaning nozzles, a mounting plate is installed on the side of the flow guide box near the observation window assembly, and the cleaning nozzles are mounted on the mounting plate and aligned with the observation window assembly.

[0008] According to one embodiment of the present invention, the protective cover is provided with two partitions inside, and the two partitions divide the internal space of the protective cover into a first mounting cavity, a sealing cavity and a second mounting cavity arranged in an arrangement; The top surface of the cabin is provided with a first lighting opening and a second lighting opening. The first mounting cavity is connected to the first lighting opening, and the second mounting cavity is connected to the second lighting opening. A lighting lamp is installed in both the first mounting cavity and the second mounting cavity.

[0009] According to one embodiment of the present invention, at least one exhaust port is provided on the back of the engine compartment, one end of the exhaust pipe is connected to the exhaust port, the exhaust port is lower than the observation window assembly, and an exhaust fan is installed inside the exhaust port.

[0010] According to one embodiment of the present invention, the nacelle includes a lower nacelle body and a nacelle cover. The nacelle cover is hinged to the lower nacelle body, and an inclined surface is formed on the nacelle cover. The observation window assembly, the operation port, the blower mechanism, and the air guide mechanism are all disposed on the nacelle cover.

[0011] According to one embodiment of the present invention, the observation window assembly includes a transparent window panel, a fixed frame and a plurality of fastening bolts. The fixed frame is fixedly installed on the inclined surface of the compartment cover by the fastening bolts. The transparent window panel is installed on the inner wall of the fixed frame and covers the window on the inclined surface.

[0012] According to one embodiment of the present invention, a rubber ring is installed on the inner wall of the window on the inclined surface, and the transparent window panel is tightly attached to the rubber ring.

[0013] According to one embodiment of the present invention, the bottom periphery of the compartment cover is provided with a first bending plate, and the top periphery of the lower compartment is provided with a second bending plate. When the compartment cover is closed onto the lower compartment, a Z-shaped channel is formed between the first bending plate and the second bending plate.

[0014] According to one embodiment of the present invention, a pneumatic spring assist rod and an inductive switch are included. The two ends of the pneumatic spring assist rod are respectively hinged to the compartment cover and the lower compartment body. The pneumatic spring assist rod is used to assist in opening or closing the compartment cover. The inductive switch is used to detect whether the compartment cover is closed in place.

[0015] The beneficial effects of this utility model are: By continuously blowing air into the airflow chamber of the airflow guide box using a blower mechanism, the air in the airflow chamber is discharged through the air outlet between the airflow guide box and the inclined surface of the engine compartment. Since the air outlet is higher than the observation window assembly and the air outlet is downward, it can blow the water vapor near the observation window assembly to the space below the engine compartment and form a continuous airflow barrier near the inner surface of the observation window. This effectively prevents water vapor from rising to the observation window area, fundamentally solving the problem of blurred vision caused by water vapor condensation on the observation window assembly, and facilitating the operation of the personnel. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 A front view provided for an embodiment of this utility model; Figure 2 A perspective view provided for an embodiment of this utility model; Figure 3 A first sectional view provided for an embodiment of this utility model; Figure 4 Provided for the embodiments of this utility model Figure 3 Enlarged view of section A; Figure 5 Structural diagrams of the protective cover, flow guide box, and lighting lamp provided in embodiments of this utility model; Figure 6 A cross-sectional view of the protective cover and the flow guide box provided in an embodiment of this utility model; Figure 7 Internal structural diagram of the protective cover provided in this embodiment of the utility model; Figure 8 Structural diagram of the guide shield and steam outlet pipe provided in the embodiments of this utility model; Figure 9 A second sectional view provided for an embodiment of this utility model; Figure 10 Provided for the embodiments of this utility model Figure 3 Enlarged view of section B; Figure 11 Provided for the embodiments of this utility model Figure 9 Enlarged view of section C.

[0018] Icons: 1. Support frame; 2. Cabin; 201. Lower compartment; 202. Compartment cover; 203. Sloping surface; 204. First bending plate; 205. Second bending plate; 3. Transparent window panel; 4. Fixed frame; 5. Protective cover; 501. Partition; 502. Sealing cavity; 503. Air inlet; 6. Funnel; 7. Operating port; 8. Flow guide box; 801. Flow guide cavity; 802. Mounting plate; 9. Fan; 10. Cleaning valve; 11. T-pipe; 12. Cleaning nozzle; 13. Lighting lamp; 14. Flow guide cover; 141. Partition plate; 15. Steam outlet pipe; 16. Control box; 17. Rubber ring; 18. Fastening bolt; 19. Locking fastener; 20. Hinge; 21. Pneumatic spring booster rod; 22. Induction switch. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] like Figures 1-8 As shown, one embodiment of the present invention provides a water-sand mixing sandblasting machine, including a machine chamber 2, a blower mechanism, a flow guiding mechanism, and a steam outlet pipe 15; the front of the machine chamber 2 forms a slope 203, and a window and an operation port 7 are provided on the slope 203, and an observation window assembly is installed on the outside of the window. The blower mechanism is installed on the top surface of the nacelle 2. The air guide mechanism includes an air guide box 8, which is installed on the inner top wall of the nacelle 2. An air guide cavity 801 is formed inside the air guide box 8. An air outlet is formed between the air guide box 8 and the inclined surface 203 of the nacelle 2. The air outlet is connected to the air guide cavity 801 and is higher than the observation window assembly. The air outlet is directed towards the observation window assembly. The blower mechanism is used to blow air into the air guide cavity 801. The steam outlet pipe 15 is installed on the back of the engine compartment 2 and is connected to the interior of the engine compartment 2.

[0021] In this embodiment, a blower mechanism continuously blows air into the guide cavity 801 of the guide box 8. The air in the guide cavity 801 is discharged through the air outlet between the guide box 8 and the inclined surface 203 of the nacelle 2. Since this air outlet is higher than the observation window assembly and the air outlet faces downwards, it can effectively blow the water vapor near the observation window assembly to the space below the nacelle 2 and form a continuous airflow barrier near the inner surface of the observation window. This avoids the problem of water vapor rising to the vicinity of the observation window assembly and obstructing the operator's view, thus facilitating the operator's operation. Finally, the water vapor blown downwards is discharged from the steam outlet pipe 15 at the rear of the nacelle 2.

[0022] In this embodiment, the blower mechanism includes a protective cover 5 and a blower 9. A through hole is provided on the top surface of the housing 2, and the blower 9 is installed at the through hole. The protective cover 5 is sealed and installed on the top surface of the housing 2. A sealed cavity 502 is formed inside the protective cover 5. The blower 9 is located inside the sealed cavity 502. An air inlet 503 is provided on the protective cover 5. The sealed cavity 502, the through hole and the guide cavity 801 are connected in sequence.

[0023] Thus, when the fan 9 starts, external air enters the sealed cavity 502 from the air inlet 503 of the protective cover 5. The fan 9 then blows the air in the sealed cavity 502 into the guide cavity 801 of the guide box 8, and finally discharges it from the air outlet between the guide box 8 and the inclined surface 203 of the nacelle 2.

[0024] In some embodiments, the air inlet 503 on the side wall of the flow guide box 8 is in the shape of a grille, which can intercept large-volume garbage, such as garbage bags.

[0025] In this embodiment, Figure 5 As shown, the flow guide box 8 is rectangular in shape, with an open top and a sloping opening on one side along its length. Figure 4 As shown, after the air guide box 8 is installed in place, its open end should be flush against the inclined surface 203 of the nacelle 2. At this time, the aforementioned air outlet is formed between the open end of the air guide box 8 and the inclined surface 203 of the nacelle 2. The air blown out from this air outlet flows downward along the inner wall of the observation window assembly, thereby blowing away the water vapor near the inner wall of the observation window assembly.

[0026] In this embodiment, at least one exhaust port is provided on the rear of the nacelle 2, and one end of the exhaust pipe 15 is connected to the exhaust port. The exhaust port is lower than the observation window assembly. Figure 3 As shown in the diagram, the arrows roughly indicate the direction of water vapor flow after it is blown downwards by the blower mechanism. If the exhaust port is set too high, the water vapor will have difficulty escaping from the exhaust port.

[0027] In some embodiments, in order to improve the efficiency of water vapor discharge, an exhaust fan can be installed in the exhaust port on the back of the engine compartment 2, so that the water vapor can be quickly drawn away by the exhaust fan.

[0028] In this embodiment, a flow deflector 14 is installed on the inner wall of the cabin 2, such as... Figure 8 As shown, the deflector 14 is in the shape of an isosceles trapezoid. When the end face of the deflector 14 is fixed to the inner wall of the nacelle 2, an isosceles trapezoidal exhaust chamber is formed inside the deflector 14. The bottom of the deflector 14 has an inlet, and the inlet at the bottom of the deflector 14, the exhaust chamber inside the deflector 14, and the exhaust port on the back of the nacelle 2 are connected in sequence. In this way, the water vapor in the nacelle 2 enters the exhaust chamber inside the deflector 14 from the inlet at the bottom of the deflector 14, and finally, the exhaust chamber inside the deflector 14 passes through the exhaust port on the back of the nacelle 2 and enters the exhaust pipe 15 to be discharged.

[0029] In some embodiments, there is a partition plate 141 on the inner wall of the flow guide 14. The partition plate 141 is used to separate the exhaust chamber inside the flow guide 14 and to divide the inlet at the bottom of the flow guide 14 into multiple parts, so that water vapor can enter evenly from the bottom inlet of the flow guide 14.

[0030] In this embodiment, there are no specific limitations on the shape and number of partition panels 141. As a specific embodiment, partition panels 141 are as follows: Figure 8 As shown, the partition plate 141 includes a first plate, a second plate, and a third plate connected in sequence. The first and second plates are perpendicular, and the first and third plates are parallel. The first and third plates are vertically arranged, while the second plate is horizontally arranged. The bottom surfaces of the first and third plates are flush with the bottom surface of the deflector 14. This divides the bottom opening of the deflector 14 into two. Water vapor inside the nacelle 2 enters through the openings on both sides of the partition plate 141 at the bottom of the deflector 14, eventually collecting inside the deflector 14 and exiting through the exhaust port at the back of the nacelle 2.

[0031] It should be noted that the sandblasting environment inside the cabin 2 naturally contains dust and fine particles. The damp surface of the observation window assembly easily attracts dust and abrasive debris from the air. The attracted dirt will make the observation window assembly dirty and reduce light transmittance. After drying, this dirt will harden into lumps. To solve this technical problem, a cleaning mechanism is provided. The cleaning mechanism includes multiple cleaning nozzles 12, cleaning valves 10, piping systems, and water pumps. A mounting plate 802 is installed on the side of the flow guide box 8 near the observation window assembly. The cleaning nozzles 12 are mounted on the mounting plate 802 and are aligned with the observation window assembly.

[0032] The water pump is connected to multiple cleaning nozzles 12 via a pipeline system. A cleaning valve 10 is installed on the pipeline system to control the on / off state of the pipeline system. The cleaning nozzles 12 are water spray nozzles, and the cleaning valve 10 is a solenoid valve.

[0033] Thus, when the observation window gets dirty, the water pump can be started to deliver water to the cleaning nozzle 12, which will clean the observation window, remove the dirt from the observation window assembly, improve the light transmittance, and facilitate the operator's observation.

[0034] As a specific embodiment, such as Figure 5 As shown, there are two cleaning nozzles 12. A three-way pipe 11 is installed at the bottom of the flow guide box 8, and the cleaning valve 10 is installed inside the protective cover 5. The water pump is connected to the inlet of the cleaning valve 10 through a hose, and the outlet of the cleaning valve 10 is connected to the inlet of the three-way pipe 11 through a hose. The two outlets of the three-way pipe 11 are each connected to the two cleaning nozzles 12 through a hose.

[0035] As an optional embodiment, unlike the above embodiments, the cleaning mechanism includes multiple cleaning nozzles 12, a cleaning valve 10, a piping system, and an air compressor. A mounting plate 802 is installed on the side of the flow guide box 8 near the observation window assembly. The cleaning nozzles 12 are mounted on the mounting plate 802 and aligned with the observation window assembly. In this embodiment, the cleaning nozzles 12 are air nozzles.

[0036] In this way, compressed air is injected into the cleaning nozzle 12 through the pipeline system using an air compressor. The cleaning nozzle 12 blows away the dirt on the observation window assembly and improves the light transmittance.

[0037] In this embodiment, as Figure 2 and Figure 4 As shown, the observation window assembly includes a transparent window panel 3, a fixed frame 4, and multiple fastening bolts 18. The transparent window panel 3 has the same external shape as the window on the cabin 2, but its size is larger than that of the window on the cabin 2. The fixed frame 4 is U-shaped, and the transparent window panel 3 is installed on the inner wall of the fixed frame 4. The fixed frame 4 is fixedly installed on the inclined surface 203 of the cabin cover 202 by the fastening bolts 18, so that the transparent window panel 3 covers the window on the inclined surface 203.

[0038] In some embodiments, such as Figure 4 As shown, a rubber ring 17 is installed on the inner wall of the window on the inclined surface 203. The rubber ring 17 protrudes from the window, so that after tightening the fastening bolt 18, the transparent window panel 3 will approach and fit tightly against the rubber ring 17. The rubber ring 17 provides excellent sealing.

[0039] In this embodiment, as Figure 1 and Figure 2As shown, the nacelle 2 includes a funnel 6, a lower nacelle 201, and a nacelle cover 202 connected in sequence. The back of the nacelle cover 202 is hinged to the back of the lower nacelle 201 by two hinges 20. The aforementioned inclined surface 203 is formed on the nacelle cover 202, and the operating port 7 is located on the front of the nacelle cover 202. The aforementioned observation window assembly, blower mechanism, and air guide mechanism are all located on the nacelle cover 202, and the aforementioned steam outlet pipe 15 is installed on the lower nacelle 201.

[0040] like Figure 1 As shown, two locking fasteners 19 are installed on the front of the lower compartment 201, and two hooks that cooperate with the locking fasteners 19 are provided on both sides of the bottom of the front of the compartment cover 202. The compartment cover 202 is locked in place by the cooperation of the locking fasteners 19 and the hooks.

[0041] Optional, such as Figure 2 As shown, a pneumatic spring assist rod 21 is installed between the lower chamber 201 and the chamber cover 202 to assist in opening and closing the cover 202. One end of the pneumatic spring assist rod 21 is hinged to the lower chamber 201, and the other end is hinged to the cover 202. By changing the length of the pneumatic spring assist rod 21, the opening and closing of the cover 202 is assisted. The pneumatic spring assist rod 21 is a common accessory for sandblasting machines and will not be explained in detail here.

[0042] In this embodiment, as Figure 2 , Figure 5 and Figure 6 As shown, the protective cover 5 is elongated and has two partitions 501 inside, which divide the internal space of the protective cover 5 into a first mounting cavity, a sealing cavity 502, and a second mounting cavity arranged in an arrangement. A first lighting port, a through hole, and a second lighting port are provided on the top surface of the cover 202. When the protective cover 5 is sealed and installed on the top surface of the cover 202, the first mounting cavity and the first lighting port are connected, the sealing cavity 502 and the through hole are connected, and the second mounting cavity and the second lighting port are connected. A light 13 is installed in both the first and second mounting cavities, and a fan 9 is installed in the through hole. The lighting 13 provides illumination to the interior of the machine compartment 2, facilitating operation by personnel.

[0043] In this embodiment, as Figure 1 and Figure 2 As shown, the device includes a support frame 1, a lower compartment 201 fixedly mounted on the support frame 1, and a control box 16 mounted on the side of the lower compartment 201.

[0044] In some embodiments, such as Figure 2As shown, a proximity switch 22 is installed on the top of the control box 16, directly facing the contact point between the lower chamber 201 and the chamber cover 202. When the chamber cover 202 closes onto the lower chamber 201, the control box 16 receives a signal from the proximity switch 22, indicating that the chamber cover 202 is properly closed. The control box 16 then controls the pneumatic spring assist rod 21 to stop working, allowing the operator to start the sandblasting operation, thus enhancing safety.

[0045] In this embodiment, as Figure 10 and Figure 11 As shown, a first bending plate 204 is provided around the bottom perimeter of the chamber cover 202, and a second bending plate 205, which cooperates with the first bending plate 204, is provided around the top perimeter of the lower chamber body 201. When the chamber cover 202 is closed onto the lower chamber body 201, a Z-shaped channel is formed between the first bending plate 204 and the second bending plate 205. In this way, after the water sprayed by the spray gun splashes onto the inner wall of the sandblasting chamber 2, it is difficult for water to enter the gap between the chamber cover 202 and the lower chamber body 201.

[0046] Since the water-sand mixing sandblasting machine is an existing device, to avoid redundancy, the principle of sandblasting and cleaning workpieces by the water-sand mixing sandblasting machine in this embodiment will not be explained.

[0047] In summary, this water-sand mixing sandblasting machine has the following advantages: First, the high-level air outlet formed by the air guide box 8 and the inclined surface 203 blows air downwards, forming a continuous airflow barrier that effectively prevents water vapor from rising to the observation window area, fundamentally solving the problem of blurred vision caused by water vapor condensation.

[0048] Secondly, the steam outlet pipe 15, located at a low position on the back of the engine compartment 2, works in conjunction with the exhaust fan and the deflector 14 to ensure that the blown-off water vapor can be smoothly and quickly discharged from the engine compartment 2.

[0049] Third, the integrated cleaning mechanism can directly and quickly clean dust, abrasive debris and other dirt from the inner surface of the observation window, prevent the formation of hard dirt, maintain the light transmittance of the observation window, and ensure that the operator can always clearly observe the working conditions inside the machine room 2.

[0050] Fourth, the lighting 13 inside the protective cover 5 provides sufficient light for the interior of the machine compartment 2, solving the problem of dim lighting inside and making it easier for the operator to observe the workpiece processing effect.

[0051] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A water-sand mixing sandblasting machine, characterized in that, It includes a nacelle (2), a blower mechanism, a flow guide mechanism, and a steam outlet pipe (15); the front of the nacelle (2) has a slope (203), and a window and an operation port (7) are provided on the slope (203), and an observation window assembly is installed on the outside of the window; The blower mechanism is installed on the top surface of the nacelle (2). The flow guiding mechanism includes a flow guiding box (8), which is installed on the inner top wall of the nacelle (2). A flow guiding cavity (801) is formed inside the flow guiding box (8). An air outlet is formed between the flow guiding box (8) and the inclined surface (203) of the nacelle (2). The air outlet is connected to the flow guiding cavity (801), and the air outlet is higher than the observation window assembly. The air outlet is directed towards the observation window assembly. The blower mechanism is used to blow air into the flow guiding cavity (801). The steam pipe (15) is installed on the back of the nacelle (2) and is connected to the interior of the nacelle (2).

2. The water-sand mixing sandblasting machine according to claim 1, characterized in that, The blower mechanism includes a protective cover (5) and a fan (9). The top surface of the machine compartment (2) has a through hole, the fan (9) is installed at the through hole, the protective cover (5) is installed on the top surface of the machine compartment (2), a sealed cavity (502) is formed inside the protective cover (5), the fan (9) is located inside the sealed cavity (502), and an air inlet (503) is opened on the protective cover (5). The sealed cavity (502), the through hole and the guide cavity (801) are connected in sequence.

3. The water-sand mixing sandblasting machine according to claim 2, characterized in that, The system includes a cleaning mechanism comprising a plurality of cleaning nozzles (12), and a mounting plate (802) is mounted on the side of the flow guide box (8) near the observation window assembly. The cleaning nozzles (12) are mounted on the mounting plate (802) and aligned with the observation window assembly.

4. A water-sand mixing sandblasting machine according to claim 2, characterized in that, The protective cover (5) is provided with two partitions (501) inside, which divide the internal space of the protective cover (5) into a first mounting cavity, a sealing cavity (502) and a second mounting cavity arranged in an arrangement; The top surface of the cabin (2) is provided with a first lighting port and a second lighting port. The first mounting cavity is connected to the first lighting port, and the second mounting cavity is connected to the second lighting port. A lighting lamp (13) is installed in both the first mounting cavity and the second mounting cavity.

5. A water-sand mixing sandblasting machine according to claim 2, characterized in that, At least one exhaust port is provided on the back of the nacelle (2), one end of the exhaust pipe (15) is connected to the exhaust port, the exhaust port is lower than the observation window assembly, and an exhaust fan is installed inside the exhaust port.

6. A water-sand mixing sandblasting machine according to claim 1, characterized in that, The nacelle (2) includes a lower nacelle (201) and a nacelle cover (202). The nacelle cover (202) is hinged to the lower nacelle (201). The inclined surface (203) is formed on the nacelle cover (202). The observation window assembly, the operation port (7), the blower mechanism and the flow guiding mechanism are all located on the nacelle cover (202).

7. A water-sand mixing sandblasting machine according to claim 6, characterized in that, The observation window assembly includes a transparent window panel (3), a fixed frame (4), and multiple fastening bolts (18). The fixed frame (4) is fixedly installed on the inclined surface (203) of the cover (202) by the fastening bolts (18). The transparent window panel (3) is installed on the inner wall of the fixed frame (4) and the transparent window panel (3) covers the window on the inclined surface (203).

8. A water-sand mixing sandblasting machine according to claim 7, characterized in that, A rubber ring (17) is installed on the inner wall of the window on the inclined surface (203), and the transparent window panel (3) is tightly attached to the rubber ring (17).

9. A water-sand mixing sandblasting machine according to claim 6, characterized in that, The bottom four edges of the cover (202) are provided with a first bending plate (204), and the top four edges of the lower compartment (201) are provided with a second bending plate (205). When the cover (202) is closed on the lower compartment (201), a Z-shaped channel is formed between the first bending plate (204) and the second bending plate (205).

10. A water-sand mixing sandblasting machine according to claim 6, characterized in that, It includes a pneumatic spring booster rod (21) and an induction switch (22). The two ends of the pneumatic spring booster rod (21) are respectively hinged to the compartment cover (202) and the lower compartment body (201). The pneumatic spring booster rod (21) is used to assist in opening or closing the compartment cover (202). The inductive switch (22) is used to detect whether the compartment cover (202) is closed in place.

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