A tunnel washer

Abstract

The utility model relates to a tunnel type cleaning machine, include: frame, chain conveyer, prewash water pipe, main wash water pipe main wash water tank and second water pump, chain conveyer and frame fixed connection, chain conveyer upside is located above the mesa of frame, main wash water pipe and rinsing water pipe are located above the mesa and with frame fixed connection, the mesa below rinsing water pipe is connected with main wash water tank through the pipeline, main wash water tank is connected with the water inlet of second water pump through the pipeline, the water outlet of second water pump is connected with main wash water pipe. The utility model recycles water three times through three water tanks, with the movement of material frame, the cleaning degree of water is gradually improved, so that even if using recycled water to clean material frame, under the flushing of successively cleaner water, the cleaning degree of material frame after cleaning is same with using clean water all the way, compared with using clean water all the way, greatly save the water consumption, reduce the water cost.

Description

Technical Field

[0001] This utility model relates to the field of food material basket cleaning, and in particular to a tunnel-type cleaning machine. Background Technology

[0002] Material crates (turnover baskets, trays, etc.) on food production lines serve as the core carriers for raw material transfer, and their cleanliness directly affects food safety and production efficiency. Thorough cleaning of material crates is a crucial step in ensuring food safety. Traditional cleaning machines often drain water after only one use, resulting in significant water consumption, waste, and high water costs. Utility Model Content

[0003] The present invention aims to solve the above problems by providing a tunnel cleaning machine, which solves the problems of water waste and high water costs of traditional cleaning machines.

[0004] A tunnel-type cleaning machine includes: a frame, a chain conveyor, a pre-wash water pipe, a main wash water pipe, a main wash water tank, and a second water pump. The chain conveyor is fixedly connected to the frame, and its upper side is located above the platform of the frame. The main wash water pipe and the rinsing water pipe are located above the platform and fixedly connected to the frame. The platform below the rinsing water pipe is connected to the main wash water tank through a pipe. The main wash water tank is connected to the inlet of the second water pump through a pipe, and the outlet of the second water pump is connected to the main wash water pipe.

[0005] Preferably, the system further includes a pre-wash water pipe, a pre-wash water tank, and a first water pump. The main wash water pipe is located between the pre-wash water pipe and the rinsing water pipe. The pre-wash water pipe is located above the countertop and is fixedly connected to the frame. The countertop below the main wash water pipe is connected to the pre-wash water tank via a pipe. The pre-wash water tank is connected to the inlet of the first water pump via a pipe. The outlet of the first water pump is connected to the pre-wash water pipe. A drain hole is formed on the countertop below the pre-wash water pipe.

[0006] Preferably, the system also includes a rinsing water pipe, a rinsing water tank, and a third water pump. The pre-rinse water pipe, main rinse water pipe, rinsing water pipe, and rinsing water pipe are arranged sequentially from front to back. The chain conveyor is in the forward-backward direction. The rinsing water pipe is located above the platform and is fixedly connected to the frame. The platform below the rinsing water pipe is connected to the rinsing water tank via a pipe. The rinsing water tank is connected to the inlet of the third water pump via a pipe. The outlet of the third water pump is connected to the rinsing water pipe.

[0007] Preferably, the system further includes a blower and a second housing. The second housing is located above the table and the chain conveyor and is fixedly connected to the frame. The second housing extends through the front and rear directions. The blower is fixedly connected to the second housing, and the air outlet of the blower is connected to the interior of the second housing.

[0008] Preferably, it also includes a pre-wash nozzle, a main wash nozzle, and a rinsing nozzle. The pre-wash water pipe is fixedly connected to and communicates with the pre-wash nozzle. The main wash water pipe is fixedly connected to and communicates with the main wash nozzle. The rinsing water pipe is fixedly connected to and communicates with the rinsing nozzle. The water pressure output by the main wash nozzle is greater than the water pressure output by the pre-wash nozzle and the rinsing nozzle.

[0009] Preferably, the main wash water pipe includes a vertical water pipe and a horizontal water pipe. The vertical water pipe is ring-shaped, and the horizontal water pipe is U-shaped. The two ends of the two horizontal water pipes are respectively connected to the pipe sections above and below the vertical water pipe. The vertical water pipe is connected to the outlet of the second water pump through a pipe. The main wash nozzles are arranged in a ring-shaped manner inside the vertical water pipe. The lower part of the upper horizontal water pipe is fixedly connected to the main wash nozzle, and the upper part of the upper horizontal water pipe is fixedly connected to the main wash nozzle. The main wash nozzles are arranged in sequence along the horizontal water pipe.

[0010] Preferably, the rinsing water pipe is a ring that runs through the front and back directions, the chain on the upper side of the chain conveyor passes through the rinsing water pipe, and the rinsing nozzles are arranged in a ring inside the rinsing water pipe and face inward. The pre-wash water pipe is a straight pipe extending in the front and rear directions. Multiple pre-wash water pipes surround the chain on the upper side of the chain conveyor. The pre-wash nozzle is fixedly connected to and communicates with the pre-wash water pipe. The pre-wash water pipe is arranged in a straight line along the pre-wash water pipe. The pre-wash nozzle faces the inner side of the ring formed by multiple pre-wash water pipes. The flushing water pipe is a ring-shaped pipe that runs through the front and back. The chain on the upper side of the chain conveyor passes through the flushing water pipe. A flushing nozzle is formed on the inner side of the flushing water pipe.

[0011] Preferably, the pre-wash water tank has a first drain pipe and a first overflow pipe, the first overflow pipe being higher than the first drain pipe, and a filter device is provided at the connection between the pre-wash water tank and the inlet pipe of the first water pump; the main wash water tank has a second drain pipe and a second overflow pipe, the second overflow pipe being higher than the second drain pipe, and a filter device is provided at the connection between the main wash water tank and the inlet pipe of the second water pump; the rinsing water tank has a third drain pipe and a third overflow pipe, the third overflow pipe being higher than the third drain pipe, and a filter device is provided at the connection between the rinsing water tank and the inlet pipe of the third water pump.

[0012] Preferably, it also includes a first curtain and a first housing. The first housing is located above the chain conveyor and the table and is fixedly connected to the frame. The first housing is through in the front and back direction. The openings at the front and back ends of the first housing are respectively fixedly provided with elastic first curtains. The pre-wash water pipe, main wash water pipe, rinsing water pipe and flushing water pipe are all located inside the first housing.

[0013] Preferably, it also includes guide rods, with two sets of guide rods located above the table and fixedly connected to the frame. The two sets are used to limit the position of the material frame in the left and right directions.

[0014] This invention has the following advantages: water is recycled three times through three water tanks. As the material frame moves, the cleanliness of the cleaning water gradually increases. Even when using recycled water to clean the material frame, the cleanliness of the material frame after each rinse with increasingly cleaner water is the same as that of using clean water throughout the process. This greatly saves water consumption and reduces water costs compared to using clean water throughout the process. A blower at the end of the frame blows out a high-speed airflow to blow off the residual water on the material frame, which speeds up the subsequent drying process and reduces the growth of microorganisms. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0016] Figure 1 One of the three-dimensional structural schematic diagrams of this utility model; Figure 2 : Figure 1 A magnified view of a section at point A in the middle; Figure 3 : Figure 1 A magnified view of a section at point B in the middle; Figure 4 : Figure 1 A magnified view of a section at point C; Figure 5 : The second three-dimensional structural schematic diagram of this utility model; Figure 6 : A top view of the structure of this utility model. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and examples: The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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. like Figures 1 to 6 As shown, a tunnel-type cleaning machine includes: a frame 1, a chain conveyor 2, a pre-wash water pipe 3, a main wash water pipe 4, a main wash water tank 8, and a second water pump 83. The chain conveyor 2 is fixedly connected to the frame 1. The upper side of the chain conveyor 2 is located above the platform 11 of the frame 1, so that the chain on the upper side of the chain conveyor 2 is located above the platform 11, allowing the material frame 100 to contact the chain without being blocked by the platform 11. The main wash water pipe 4 and the rinsing water pipe 5 are located above the platform 11 and fixedly connected to the frame 1. The main wash water pipe 4 and the rinsing water pipe 5 are arranged in a straight line along the conveying direction of the chain conveyor 2. The platform 11 below the rinsing water pipe 5 is connected to the main wash water tank 8 through a pipe. The main wash water tank 8 is connected to the inlet of the second water pump 83 through a pipe. The outlet of the second water pump 83 is connected to the main wash water pipe 4.

[0020] Preferably, the system also includes a pre-wash water pipe 3, a pre-wash water tank 7, and a first water pump 73. The main wash water pipe 4 is located between the pre-wash water pipe 3 and the rinsing water pipe 5. The pre-wash water pipe 3 is located above the tabletop 11 and is fixedly connected to the frame 1. The tabletop 11 below the main wash water pipe 4 is connected to the pre-wash water tank 7 via a pipe. The pre-wash water tank 7 is connected to the inlet of the first water pump 73 via a pipe. The outlet of the first water pump 73 is connected to the pre-wash water pipe 3. The tabletop 11 below the pre-wash water pipe 3 has a drain hole, which is connected to a sewage treatment device or a sewer via a pipe.

[0021] Preferably, the system also includes a rinsing water pipe 6, a rinsing water tank 9, and a third water pump 93. The pre-rinse water pipe 3, the main rinse water pipe 4, the rinsing water pipe 5, and the rinsing water pipe 6 are arranged sequentially from front to back. The conveying direction of the chain conveyor 2 is from front to back. The rinsing water pipe 6 is located above the platform 11 and is fixedly connected to the frame 1. The platform 11 below the rinsing water pipe 6 is connected to the rinsing water tank 9 through a pipe. The rinsing water tank 9 is connected to the inlet of the third water pump 93 through a pipe. The outlet of the third water pump 93 is connected to the rinsing water pipe 5.

[0022] Preferably, the system further includes a blower 10 and a second housing 15. The second housing 15 is located above the platform 11 and the chain conveyor 2 and is fixedly connected to the frame 1. The second housing 15 extends through the front and rear directions. The blower 10 is fixedly connected to the second housing 15, and the air outlet of the blower 10 is connected to the interior of the second housing 15. Water droplets blown down by the airflow from the blower 10 can flow along the platform 11 to the pipe opening connected to the water tank, where the water is collected and recycled, while simultaneously reducing the humidity inside the second housing 15.

[0023] More preferably, it also includes a second curtain 16, with the openings at the front and rear ends of the second housing 15 respectively fixedly connected to the elastic second curtain 16, which serves to block airflow and splashing water droplets.

[0024] Preferably, the system also includes a pre-wash nozzle 31, a main wash nozzle 43, and a rinsing nozzle 51. The pre-wash water pipe 3 is fixedly connected to and communicates with the pre-wash nozzle 31. The main wash water pipe 4 is fixedly connected to and communicates with the main wash nozzle 43. The rinsing water pipe 5 is fixedly connected to and communicates with the rinsing nozzle 51. The water pressure output by the main wash nozzle 43 is greater than the water pressure output by the pre-wash nozzle 31 and the rinsing nozzle 51. The water sprayed by the main wash nozzle 43 has a stronger impact force, which can more effectively remove surface dirt from the material frame 100.

[0025] Preferably, the main water pipe 4 includes a vertical water pipe 41 and a horizontal water pipe 42. The vertical water pipe 41 is ring-shaped, and the horizontal water pipe 42 is U-shaped. The two ends of the two horizontal water pipes 42 are respectively connected to the pipe sections above and below the vertical water pipe 41. The vertical water pipe 41 is connected to the outlet of the second water pump 83 through a pipe. The main water nozzles 43 are arranged in a ring-shaped manner inside the vertical water pipe 41. The lower part of the upper horizontal water pipe 42 is fixedly connected to the main water nozzles 43, and the upper part of the upper horizontal water pipe 42 is fixedly connected to the main water nozzles 43. The main water nozzles 43 are arranged in sequence along the horizontal water pipe 42.

[0026] Preferably, the rinsing water pipe 5 is a ring that runs through the front and back directions, the chain on the upper side of the chain conveyor 2 passes through the rinsing water pipe 5, and the rinsing nozzles 51 are arranged in a ring inside the rinsing water pipe 5 and face inward.

[0027] Preferably, the pre-wash water pipe 3 is a straight pipe extending in the front-to-back direction, thereby extending the pre-washing time and the number of times the material frame 100 is rinsed, more effectively softening and initially removing dirt. Multiple pre-wash water pipes 3 surround the chain on the upper side of the chain conveyor 2. The pre-wash nozzle 31 is fixedly connected to and communicates with the pre-wash water pipe 3. The pre-wash water pipe 3 is arranged in a straight line along the pre-wash water pipe 3. The pre-wash nozzle 31 faces the inner side of the ring formed by multiple pre-wash water pipes 3.

[0028] Preferably, the flushing water pipe 6 is a ring-shaped pipe that runs through the front and back directions. The chain on the upper side of the chain conveyor 2 passes through the flushing water pipe 6. A flushing nozzle 60 is formed on the inner side of the flushing water pipe 6. The flushing nozzle 60 is located on the inner side of the flushing water pipe 6.

[0029] Preferably, the pre-wash water tank 7 has a first drain pipe 71 and a first overflow pipe 72, with the first overflow pipe 72 being higher than the first drain pipe 71. A filter device is provided at the connection point between the pre-wash water tank 7 and the inlet pipe of the first water pump 73. The main wash water tank 8 has a second drain pipe 81 and a second overflow pipe 82, with the second overflow pipe 82 being higher than the second drain pipe 81. A filter device is provided at the connection point between the main wash water tank 8 and the inlet pipe of the second water pump 83. The rinsing water tank 9 has a third drain pipe 91 and a third overflow pipe 92, with the third overflow pipe 92 being higher than the third drain pipe 91. A filter device is provided at the connection point between the rinsing water tank 9 and the inlet pipe of the third water pump 93. The filter device filters out food residue in the recycled water, preventing food residue from clogging the pipes and nozzles.

[0030] The overflow pipe is positioned high, allowing the floating oil in the upper layer of the recovered water to be directly discharged into the wastewater treatment equipment or sewer system. Additionally, the overflow pipe is positioned higher than the pump's inlet pipe, reducing the oil content in the water drawn into the pump.

[0031] Preferably, the system also includes a first curtain 13 and a first outer casing 14. The first outer casing 14 is located above the chain conveyor 2 and the table 11 and is fixedly connected to the frame 1. The first outer casing 14 is continuous in the front-to-back direction, and elastic first curtains 13 are fixedly installed at the openings at both the front and rear ends of the first outer casing 14. The pre-wash water pipe 3, main wash water pipe 4, rinsing water pipe 5, and flushing water pipe 6 are all located inside the first outer casing 14. The first curtain 13 and the first outer casing 14 are used to reduce water splashing and reduce pollution to the external environment of the cleaning machine.

[0032] Preferably, it also includes guide rods 12. The left and right sets of guide rods 12 are respectively located above the table 11 and fixedly connected to the frame 1. The left and right sets are used to limit the position of the material frame 100 in the left and right directions. During the cleaning process of limiting the material frame 100 in the cleaning machine, the limiting material frame 100 is slidably connected to the guide rods 12 on the left and right sides.

[0033] Working principle: During operation, the material frame 100, which has been flipped so that its opening faces downward, comes into contact with the chain on the upper side of the chain conveyor 2, and the material frame 100 is driven by the chain to move in a straight line from front to back.

[0034] The material frame 100 first passes through the pre-wash water pipe 3, and the pre-wash nozzles 31 spray water onto the material frame 100 from four directions: up, down, left, and right, to initially wash away floating dust and surface dirt and soften the surface dirt. The wastewater after cleaning flows out from the drain hole (not shown in the figure) of the table 11 and is transported along the pipe to the sewage treatment equipment or sewer.

[0035] Afterwards, water is sprayed from the material frame 100 through the vertical water pipe 41 and the main wash nozzle 43 from four directions: top, bottom, left, and right. The water pressure of the main wash nozzle 43 is higher than that of the pre-wash nozzle 31. The high-speed water flow impacts the material frame 100, washing away stubborn dirt. Detergent may be mixed in the water sprayed from the main wash nozzle 43 to improve the removal effect on oil stains.

[0036] Afterwards, the material frame 100 passes through the rinsing water pipe 5, and the rinsing nozzle 51 sprays water onto the material frame 100 from four directions: up, down, left, and right, washing away any remaining surface dirt. The water from the rinsing water pipe 5 does not contain detergent, thus reducing the amount of detergent residue on the surface of the material frame 100.

[0037] Then, the material frame 100 passes through the rinsing water pipe 6, and the rinsing nozzle 60 sprays water onto the material frame 100 from four directions: up, down, left, and right, using clean water to further remove dirt and residue from the surface of the material frame 100.

[0038] Finally, the material frame 100 passes through the second outer shell 15, and the water droplets on the surface of the material frame 100 are driven away from the material frame 100 by the airflow blown by the blower 10. After the material frame 100 is cleaned, it is driven backward by the chain conveyor 2 to leave the cleaning machine.

[0039] The water used in the rinsing pipe 6 is not recycled water; it can come from the municipal water supply network. After rinsing, the water from the rinsing pipe 6 enters the rinsing tank 9 through a pipe (not shown in the diagram) for primary recycling. The rinsing pipe 5 sprays out the primary recycled water for cleaning; the water sprayed from the rinsing pipe 5 enters the main wash tank 8 through a pipe for secondary recycling. Detergent is added to the secondary recycled water in the main wash tank 8 periodically, either mechanically or manually. The main wash pipe 4 sprays out secondary recycled water mixed with detergent for cleaning; the sprayed water enters the pre-wash tank 7 through a pipe for tertiary recycling. Finally, the tertiary recycled water is sprayed out by the pre-wash pipe 3 for pre-washing; the sprayed water is not recycled and is directly discharged as wastewater.

[0040] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A tunnel cleaning machine, characterized in that, include: The machine includes a frame (1), a chain conveyor (2), a pre-wash water pipe (3), a main wash water pipe (4), a main wash water tank (8), and a second water pump (83). The chain conveyor (2) is fixedly connected to the frame (1). The upper side of the chain conveyor (2) is located above the table (11) of the frame (1). The main wash water pipe (4) and the rinsing water pipe (5) are located above the table (11) and are fixedly connected to the frame (1). The table (11) below the rinsing water pipe (5) is connected to the main wash water tank (8) through a pipe. The main wash water tank (8) is connected to the inlet of the second water pump (83) through a pipe. The outlet of the second water pump (83) is connected to the main wash water pipe (4).

2. The tunnel cleaning machine according to claim 1, characterized in that: It also includes a pre-wash water pipe (3), a pre-wash water tank (7) and a first water pump (73). The main wash water pipe (4) is located between the pre-wash water pipe (3) and the rinsing water pipe (5). The pre-wash water pipe (3) is located above the tabletop (11) and is fixedly connected to the frame (1). The tabletop (11) below the main wash water pipe (4) is connected to the pre-wash water tank (7) through a pipe. The pre-wash water tank (7) is connected to the inlet of the first water pump (73) through a pipe. The outlet of the first water pump (73) is connected to the pre-wash water pipe (3). The tabletop (11) below the pre-wash water pipe (3) has a drain hole.

3. A tunnel cleaning machine according to claim 2, characterized in that: It also includes a rinsing water pipe (6), a rinsing water tank (9) and a third water pump (93). The pre-rinse water pipe (3), main rinse water pipe (4), rinsing water pipe (5) and rinsing water pipe (6) are arranged in sequence from front to back. The conveying direction of the chain conveyor (2) is from front to back. The rinsing water pipe (6) is located above the table (11) and is fixedly connected to the frame (1). The table (11) below the rinsing water pipe (6) is connected to the rinsing water tank (9) through a pipe. The rinsing water tank (9) is connected to the inlet of the third water pump (93) through a pipe. The outlet of the third water pump (93) is connected to the rinsing water pipe (5).

4. A tunnel cleaning machine according to claim 3, characterized in that: It also includes a blower (10) and a second housing (15), the second housing (15) is located above the table (11) and the chain conveyor (2) and is fixedly connected to the frame (1), the second housing (15) is through in the front and back direction, the blower (10) is fixedly connected to the second housing (15), and the air outlet of the blower (10) is connected to the inside of the second housing (15).

5. A tunnel cleaning machine according to claim 3, characterized in that: It also includes a pre-wash nozzle (31), a main wash nozzle (43) and a rinse nozzle (51). The pre-wash water pipe (3) is fixedly connected to the pre-wash nozzle (31) and is in communication with it. The main wash water pipe (4) is fixedly connected to the main wash nozzle (43) and is in communication with it. The rinse water pipe (5) is fixedly connected to the rinse nozzle (51) and is in communication with it. The water pressure output by the main wash nozzle (43) is greater than the water pressure output by the pre-wash nozzle (31) and the rinse nozzle (51).

6. A tunnel cleaning machine according to claim 5, characterized in that: The main washing water pipe (4) includes a vertical water pipe (41) and a horizontal water pipe (42). The vertical water pipe (41) is ring-shaped, and the horizontal water pipe (42) is U-shaped. The two ends of the two horizontal water pipes (42) are connected to the pipe sections above and below the vertical water pipe (41) respectively. The vertical water pipe (41) is connected to the outlet of the second water pump (83) through a pipe. The main washing nozzles (43) are arranged in a ring-shaped manner inside the vertical water pipe (41). The lower part of the upper horizontal water pipe (42) is fixedly connected to the main washing nozzles (43), and the upper part of the upper horizontal water pipe (42) is fixedly connected to the main washing nozzles (43). The main washing nozzles (43) are arranged in a ring-shaped manner along the horizontal water pipe (42).

7. A tunnel cleaning machine according to claim 5, characterized in that: The rinsing water pipe (5) is a ring that runs through the front and back. The chain on the upper side of the chain conveyor (2) passes through the rinsing water pipe (5). The rinsing nozzles (51) are arranged in a ring inside the rinsing water pipe (5) and face inward. The prewash water pipe (3) is a straight pipe extending in the front and back direction. Multiple prewash water pipes (3) surround the chain on the upper side of the chain conveyor (2). The prewash nozzle (31) is fixedly connected to and communicates with the prewash water pipe (3). The prewash water pipe (3) is arranged in a straight line along the prewash water pipe (3). The prewash nozzle (31) faces the inner side of the ring formed by multiple prewash water pipes (3). The flushing water pipe (6) is a ring that runs through the front and back directions. The chain on the upper side of the chain conveyor (2) passes through the flushing water pipe (6). A flushing nozzle (60) is formed on the inner side of the flushing water pipe (6). The flushing nozzle (60) is located on the inner side of the flushing water pipe (6).

8. A tunnel cleaning machine according to claim 3, characterized in that: The pre-wash water tank (7) has a first drain pipe (71) and a first overflow pipe (72), the first overflow pipe (72) being higher than the first drain pipe (71), and a filter device is provided at the connection between the pre-wash water tank (7) and the inlet pipe of the first water pump (73); the main wash water tank (8) has a second drain pipe (81) and a second overflow pipe (82), the second overflow pipe (82) being higher than the second drain pipe (81), and a filter device is provided at the connection between the main wash water tank (8) and the inlet pipe of the second water pump (83); the rinsing water tank (9) has a third drain pipe (91) and a third overflow pipe (92), the third overflow pipe (92) being higher than the third drain pipe (91), and a filter device is provided at the connection between the rinsing water tank (9) and the inlet pipe of the third water pump (93).

9. A tunnel cleaning machine according to claim 3, characterized in that: It also includes a first curtain (13) and a first housing (14). The first housing (14) is located above the chain conveyor (2) and the table (11) and is fixedly connected to the frame (1). The first housing (14) is through in the front and back direction. The first curtain (13) with elasticity is fixedly installed at the openings at the front and back ends of the first housing (14). The pre-wash water pipe (3), main wash water pipe (4), rinsing water pipe (5) and rinsing water pipe (6) are all located inside the first housing (14).

10. A tunnel cleaning machine according to claim 1, characterized in that: It also includes guide rods (12), with the left and right sets of guide rods (12) located above the table (11) and fixedly connected to the frame (1). The left and right sets are used to limit the position of the material frame (100) in the left and right directions.

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