Sanitation vehicle water tank provided with a wave-prevention mechanism

Abstract

The application provides a sanitation vehicle clean water tank provided with a wave-preventing mechanism, which comprises a tank body, a plurality of separation mechanisms, which are arranged in the tank body at intervals and separate the tank body into a pressure relief area and a plurality of front-to-rear sequentially distributed clean water areas, each separation mechanism is provided with a plurality of communication channels at the bottom for communicating adjacent clean water areas, and a pressure relief device is arranged in the middle for relieving pressure and flowing to the pressure relief area, the pressure relief area is connected with the clean water area through a backflow pipeline, a plurality of wave-preventing mechanisms are arranged in the plurality of clean water areas respectively, each wave-preventing mechanism comprises a plurality of guide rods extending vertically, and a floating layer is connected to the guide rods through sliding and covers the water surface of the clean water area. The application can improve the gravity balance of clean water in the clean water tank under the driving conditions of vehicle emergency braking, downhill driving, sharp turning and the like, can reduce the probability of wave surge in the clean water tank, and can improve the stability and safety of vehicle driving.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sanitation vehicle clean water tank, in particular to a sanitation vehicle clean water tank with a wave prevention mechanism. BACKGROUND

[0002] During the daily driving and operation of sanitation vehicles (such as water spraying vehicles and washing and sweeping vehicles), the water in the clean water tank is subjected to severe surges due to frequent acceleration, braking and road bumps of the vehicle, which has become a key hidden danger threatening the safety of vehicle operation and the quality of operation. The specific defects are as follows: first, the violent shaking of the water body will cause the center of gravity of the vehicle to shift greatly in a short time. Under full load, this change in center of gravity is easy to break the balance of the vehicle and significantly increase the risk of rollover; second, the continuous wave impact on the welds and side plates of the tank will cause structural damage such as weld cracking and tank deformation under the repeated action of fatigue stress; third, when the vehicle is turning sharply or braking suddenly, the water in the clean water tank is driven by inertia to form a continuous wave with a large impact force, and a large amount of clean water will spew out from the top maintenance window, causing some disturbance to pedestrians and vehicles on the roadside.

[0003] The existing sanitation vehicles have a plurality of partitions arranged in the clean water tank to separate the water body and prevent the water body from shifting the center of gravity of the vehicle greatly, but the above-mentioned third defect cannot be solved, and during downhill or sudden braking, the water pressure in the several compartments will be concentrated on the partition and transmitted to the vehicle body through the partition, which will interfere with the driving of the vehicle.

[0004] A sanitation vehicle clean water tank with a wave prevention mechanism is designed to solve the above-mentioned problems. SUMMARY

[0005] The present application provides a sanitation vehicle clean water tank with a wave prevention mechanism, which can effectively solve the above-mentioned problems.

[0006] The present application is implemented as follows:

[0007] A sanitation vehicle clean water tank with a wave prevention mechanism, comprising:

[0008] a tank body;

[0009] a plurality of partition mechanisms, which are arranged in the tank body at intervals and separate the tank body into a pressure relief area and a plurality of clean water areas arranged in front of and behind each other, each partition mechanism is provided with a plurality of communication channels at the bottom for communicating adjacent clean water areas, a pressure relief device at the middle for discharging to the pressure relief area after being pressed, and the pressure relief area is connected to the clean water area through a return pipeline;

[0010] A plurality of wave-preventing mechanisms are arranged in the clear water zones, each of the wave-preventing mechanisms comprising a plurality of vertically extending guide rods and a floating layer slidingly connected to the guide rods and covering the water surface of the clear water zone.

[0011] Further, the separating mechanism comprises a front partition plate and a rear partition plate spaced apart to form a pressure relief chamber, the pressure relief chamber is sealed and filled with pressurized gas and connected to an air charging device, the pressure relief device comprises an elastic sheet embedded on the rear partition plate, an elastic member embedded in the elastic sheet and annularly arranged, a plurality of pressure relief holes are arranged through the elastic sheet, a plurality of blocking members are arranged in the pressure relief holes and blocked by the elastic force of blocking springs, the pressure relief chamber is connected to the pressure relief zone through a pressure relief pipeline controlled by a pressure relief valve, and a plurality of communication channels are arranged through the bottom of the front partition plate and the rear partition plate.

[0012] Further, the air charging device and the top of the pressure relief chamber are connected through a one-way valve for air inlet to the pressure relief chamber, when the plurality of pressure relief holes are connected to the clear water zone and the pressure relief chamber, the gas in the pressure relief chamber enters the clear water zone, when the water in the clear water zone gradually recovers to balance and the pressure on the elastic sheet gradually decreases, the pressure relief chamber is in a negative pressure state, the one-way valve gradually admits air to gradually reset the elastic sheet by the elastic member.

[0013] Further, the front part of the blocking member forms a blocking part for blocking the pressure relief hole, and the rear part is outwardly expanded to form a limiting part for connecting the elastic sheet through the blocking spring, the side wall of the blocking part is recessed to form a limiting groove, and the front inner wall of the pressure relief hole is protruded to form a plurality of limiting protrusions arranged circumferentially and embedded in the limiting groove; when the elastic sheet is arched forward to expand the front part of the pressure relief hole and the limiting protrusions are separated from the limiting groove, the blocking member can be pushed backward by the gas pressure in the pressure relief chamber.

[0014] Further, the limiting protrusion is hemispherical, the rear side of the front partition plate is protruded to form a mounting seat corresponding to the elastic sheet, the rear part of the mounting seat is arc-shaped recessed to form a sensing part with an opening backward, the sensing part is provided with a pressure sensor, and the mounting seat is provided with a plurality of electromagnetic valves for repelling the blocking member; when the elastic sheet is arched forward and the gas in the pressure relief chamber is compressed to trigger the pressure sensor, the blocking member is pushed backward by the gas pressure in the pressure relief chamber, and the electromagnetic valve is opened to repel the blocking member to fully separate from the pressure relief hole.

[0015] Further, the pressure relief area is arranged at the rear side of the several clear water areas, the pressure relief area is connected with the last side clear water area through a backflow pipeline, the pressure relief area is provided with a liquid level detection device, and the backflow pipeline is controlled to open and close by a backflow valve.

[0016] Further, the separation mechanism is provided with three and separates the tank into an overflow area, three clear water areas and a pressure relief area arranged in sequence from front to back, the volume of the overflow area and the pressure relief area is much smaller than that of the clear water area, the tank top is provided with three maintenance windows corresponding to the three clear water areas respectively, the tank front side upper part is provided with an overflow port communicating with the overflow area, and the several communication channels at the bottom of the frontmost separation mechanism communicate the frontmost clear water area with the overflow area.

[0017] The beneficial effects of the present application are:

[0018] 1. By adding the separation mechanism and the pressure relief device, the water in the clear water tank is divided into several areas to avoid the excessive deviation of the overall center of gravity of the water under the condition of sudden braking and other driving conditions, which affects the driving of the vehicle. By the pressure relief of the pressure relief device, when the water in the clear water area is excessively inclined forward and tends to push the vehicle forward during the process of vehicle downhill or sudden braking, the pressure of the water in the clear water area is relieved to avoid the formation of the trend and further reduce the influence of the change of the center of gravity of the water in the clear water tank on the driving of the vehicle. On this basis, by the arrangement of the several communication channels, the water in the clear water areas can be connected to maintain the normal circulation of the water, disperse the water flow pressure and prevent the impact on the water tank caused by the local high water pressure. At the same time, by adding the wave prevention mechanism, when the center of gravity of the water in the clear water area changes, the high-frequency vibration of the water can be absorbed by the deformation of the floating layer itself to suppress the water surface fluctuation and the generation of surge. When the vehicle is full and turns sharply or brakes suddenly, the energy generated by the inertia impact of the water can be flexibly buffered by the floating layer to reduce the amplitude and duration of the sloshing of the water in the clear water area and also to avoid the overflow of the clear water from the maintenance window on the top of the tank. Therefore, the above technical solutions can cooperate to improve the center of gravity balance of the clear water in the clear water tank under the driving conditions of sudden braking, downhill, sharp turning and other driving conditions, and also can reduce the probability of the formation of surge in the clear water tank to improve the stability and safety of the driving of the vehicle.

[0019] 2、By the addition of the pressure relief chamber, when the water body in the clean water area is inclined to press on the back baffle, the elastic sheet is pressed to arch forward and compress the gas in the pressure relief chamber, until the sealing member is pushed backward by the gas pressure in the pressure relief chamber, and then the several pressure relief holes connect the clean water area and the pressure relief chamber to discharge the clean water to the pressure relief area through the pressure relief pipeline. That is, the deformation of the elastic sheet compresses the gas in the pressure relief chamber, and the compressed gas in the compression chamber reacts on the several plugs on the elastic sheet to open the pressure relief holes, so that the opening of the pressure relief holes can be immediately responsive to the change in water pressure without the need for sensors and other electronic devices to control the system. The effect of increasing the pressure of the water body in the clean water area to a certain extent to overcome the elastic force of the sealing elastic member and then opening the several pressure relief holes for pressure relief directly through physical extrusion makes the opening of the pressure relief holes respond immediately according to the change in water pressure, which not only reduces the control cost but also has the advantages of high stability and immediacy compared to electronic control, greatly improving the efficiency of the pressure relief device opening with the change in pressure of the clean water area, and the pressure relief is timely and fast.

[0020] 3、By the addition of the one-way valve, the slow resetting of the elastic sheet is controlled to avoid causing excessive impact force on the water body in the clean water area to ensure the stability of the water body in the clean water area during the resetting process, and thus ensure the stability of the pressure relief effect of the pressure relief device. The way of controlling the slow resetting of the elastic sheet is also a physical negative pressure control method, which also has the advantages of high stability and immediacy compared to electronic control, and automatically adjusts the resetting speed of the elastic sheet according to the pressure difference between the water pressure in the clean water area and the gas pressure in the pressure relief chamber.

[0021] 4、By placing the pressure relief area at the back, when the vehicle is downhill or suddenly brakes, the clean water in the clean water area is inclined and concentrated in the rear pressure relief area after pressure relief through the pressure relief device, thereby balancing the center of gravity of the water body in the clean water area, and through the setting of the liquid level detection device, when the water level in the pressure relief area reaches the set height value, the control valve is opened to open the return pipeline, and the water in the pressure relief area is returned to the clean water area, and then the water balance between the areas is balanced through the communication holes between the several clean water areas.

[0022] 5、By the front and rear limiting cooperation of the limiting protrusion and the limiting groove, the stability of the sealing member blocking in the pressure relief hole is improved, and on this basis, after the elastic sheet is deformed to arch forward, the rear end of the pressure relief hole is deformed to expand outward, so that the limiting protrusion and the limiting groove are separated to avoid the limiting protrusion interfering with the sealing member from the pressure relief hole when the pressure relief device is pressure relieved. That is, by changing the inner diameter of the pressure relief hole with the several limiting protrusions, the sealing member is automatically clamped and released according to the corresponding demand, which not only improves the stability of the sealing member, but also ensures that the pressure relief of the pressure relief device can be stably performed. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 Structure diagram of Example 1.

[0024] Figure 2 This is a schematic cross-sectional view of the first embodiment.

[0025] Figure 3 This is a schematic diagram of the explosion structure of the pressure relief device in Example 1.

[0026] Figure 4 for Figure 3 Schematic diagram of the sealing part and sealing spring structure.

[0027] Figure 5 This is a schematic diagram of the explosion structure of the pressure relief device in Example 2.

[0028] Figure 6 It is a partial cross-sectional structural diagram of the separation mechanism of the second embodiment.

[0029] Figure 7 It is a partial cross-sectional structural diagram of the second embodiment when the elastic piece arches forward and the blocking member is separated from the pressure relief hole. DETAILED DESCRIPTION

[0030] Example 1

[0031] Reference Figures 1-4 As shown, a clean water tank for a sanitation vehicle provided with a wave-proof mechanism 3 includes:

[0032] Box 1;

[0033] A plurality of partitioning mechanisms 2 are provided at intervals within the box body 1 and divide the box body 1 into a pressure relief zone 11 and a plurality of clean water zones 12 distributed in sequence in front and behind. The bottom of each partitioning mechanism 2 is provided with a plurality of connecting channels 21 connecting the adjacent clean water zones 12, and the middle is provided with a pressure relief device 22 for releasing pressure to the pressure relief zone 11. The pressure relief zone 11 is connected to the clean water zone 12 via a return pipe 13.

[0034] A plurality of wave-proofing mechanisms 3 are respectively disposed in the plurality of clear water areas 12. Each of the wave-proofing mechanisms 3 includes a plurality of vertically extending guide rods 31 and a floating layer 32 that is slidably connected to the plurality of guide rods 31 and covers the water surface of the clear water area 12. Specifically, the floating layer 32 can be made of a flexible cushioning material such as foam or rubber.

[0035] The above structure, by adding the separation mechanism 2 and the pressure relief device 22, not only separates the water in the water tank into several areas to avoid the overall center of gravity from deviating too much to affect the driving of the vehicle under the driving conditions such as sudden braking, but also through the pressure relief of the pressure relief device 22, when the water in the clear water area 12 is excessively inclined forward during the process of the vehicle descending or sudden braking, and there is a tendency to push the vehicle forward by the separation mechanism 2, the water pressure in the clear water area 12 is relieved, thereby avoiding the formation of this tendency, further reducing the influence of the change of the center of gravity of the water in the water tank on the driving of the vehicle. On this basis, through the setting of the plurality of communication channels 21, the water in the clear water area 12 can be connected, the normal circulation of the water can be maintained, the water flow pressure can be dispersed, and the impact of the local high water pressure on the water tank can be prevented. At the same time, by adding the wave prevention mechanism 3, when the center of gravity of the water in the clear water area 12 changes, the high-frequency vibration of the water can be absorbed by the deformation of the floating layer 32 itself, the water surface fluctuation and the generation of the surge can be inhibited, when the vehicle is suddenly turned or braked under full load, the energy generated by the inertial impact of the water can be flexibly buffered by the floating layer 32, thereby reducing the amplitude and duration of the water sloshing in the clear water area 12, and also avoiding the overflow of the clear water from the top maintenance window of the tank body 1, improving the stability and safety of the driving of the vehicle.

[0036] In order to improve the pressure relief instantaneity of the pressure relief device 22, the separation mechanism 2 comprises a front partition plate 23 and a rear partition plate 24 which are spaced apart to form a pressure relief cavity 25, the pressure relief cavity 25 is filled with pressurized gas and connected to an inflation device, thereby maintaining the pressure balance between the clear water area 12 and the pressure relief cavity 25, ensuring that the elastic sheet 221 remains in a flat state, the pressure relief device 22 comprises an elastic sheet 221 embedded on the rear partition plate 24, an elastic element 222 embedded in the elastic sheet 221 and disc-shapedly surrounded, a plurality of pressure relief holes 2211 are provided through the elastic sheet 221, a plurality of blocking elements 224 are respectively blocked in the pressure relief holes 2211 under the tension of blocking springs 223, the pressure relief cavity 25 is connected to the pressure relief area 11 through a pressure relief pipeline 14 which is controlled to be opened and closed by a pressure relief valve 141, the bottom of the front partition plate 23 and the rear partition plate 24 is integrally provided with a plurality of communication channels 21, specifically, one end of the blocking element 224 blocked in the pressure relief hole 2211 gradually decreases in diameter from back to front, a plurality of blocking elements 224 are spirally spaced apart on the elastic sheet 221 and staggered with the elastic element 222, the elastic element 222 is a coiled spring, the elastic sheet 221 is made of rubber, silicone or other materials with high elasticity and sealing performance; the above structure realizes that when the water body in the clear water area 12 leans forward and presses on the rear partition plate 24, the elastic sheet 221 is pressed and arches forward and compresses the gas in the pressure relief cavity 25, until the blocking element 224 is pushed backward by the gas pressure in the pressure relief cavity 25, a plurality of pressure relief holes 2211 communicate the clear water area 12 and the pressure relief cavity 25, so as to discharge the clear water to the pressure relief area 11 through the pressure relief pipeline 14. That is, by deforming the elastic sheet 221 to extrude and compress the gas in the pressure relief cavity 25, and by using the compressed gas in the compression cavity to react on the plurality of plugs on the elastic sheet 221, the pressure relief holes 2211 are opened, thereby without the need for sensors and other control systems to judge and control electronic devices, the water body in the clear water area 12 directly increases the pressure on the elastic sheet 221 through physical extrusion, and when the pressure exceeds the elastic force of the blocking elastic element 222, the pressure relief holes 2211 are opened for pressure relief, so that the opening of the pressure relief holes 2211 can instantly respond to the change of water pressure, not only reducing the control cost, but also having the advantages of high stability and instantaneity compared with electronic control, greatly improving the efficiency of the pressure relief device 22 opening with the pressure change of the clear water area 12, and the pressure relief is timely and fast.

[0037] On this basis, if the pressure of the water body in the clear water area 12 on the elastic sheet 221 is weakened, the elastic element 222 will drive the elastic sheet 221 to quickly reset backward, which will cause the elastic sheet 221 to push the water body in the clear water area 12 to further sway, which will exacerbate the instability of the water body in the clear water area 12, threatening the structural strength of the water tank and the safety of vehicle driving.

[0038] Therefore, in order to solve the above technical problems, the inflating device is connected with the top of the pressure relief cavity 25 through a one-way valve 15 for air inflow to the pressure relief cavity 25; when the several pressure relief holes 2211 communicate the clear water area 12 and the pressure relief cavity 25, the gas in the pressure relief cavity 25 enters the clear water area 12, when the water body in the clear water area 12 gradually recovers to balance, the pressure on the elastic sheet 221 gradually decreases, the pressure relief cavity 25 is in a negative pressure state, the one-way valve 15 gradually inflows air, so that the elastic member 222 gradually drives the elastic sheet 221 to reset. Therefore, by adding the one-way valve 15, the slow resetting of the elastic sheet 221 is controlled, the impact force on the water body in the clear water area 12 is avoided, the stability of the water body in the clear water area 12 during the resetting process is ensured, and the stability of the pressure relief effect of the pressure relief device 22 is ensured. The way of controlling the slow resetting of the elastic sheet 221 is also a physical negative pressure control mode, which has the advantages of high stability and instantaneity compared with electronic control, and can automatically adjust the resetting speed of the elastic sheet 221 according to the pressure difference between the water pressure in the clear water area 12 and the gas pressure in the pressure relief cavity 25.

[0039] In order to maintain the balance of the water body in the clear water tank after pressure relief by the pressure relief device 22, the pressure relief area 11 is arranged at the rear side of the several clear water areas 12, the pressure relief area 11 is connected with the last clear water area 12 through a backflow pipeline 13, a liquid level detection device is arranged in the pressure relief area 11, and the backflow pipeline 13 is controlled to open and close by a backflow valve 131. By arranging the pressure relief area 11 at the rear side, when the vehicle is downhill or suddenly brakes, the clear water in the clear water area 12 is inclined forward and concentrated in the pressure relief area 11 after pressure relief by the pressure relief device 22, so as to balance the gravity center of the whole water body in the clear water area 12. By arranging the liquid level detection device, when the water level in the pressure relief area 11 reaches a set height value, the backflow valve 131 is controlled to open the backflow pipeline 13, the water body in the pressure relief area 11 is backflowed to the clear water area 12, and the water balance between the areas is balanced through the communication holes 21 between the several clear water areas 12.

[0040] Specifically, the separation mechanism 2 is provided with three and separates the tank body 1 into an overflow area 16, three clear water areas 12 and a pressure relief area 11 arranged in sequence from front to rear, the volume of the overflow area 16 and the pressure relief area 11 is much smaller than that of the clear water area 12, the tank body 1 is provided with three maintenance windows 17 corresponding to the three clear water areas 12 at the top, the tank body 1 is provided with an overflow port 18 communicating with the overflow area 16 at the upper front side, and the several communication holes 21 at the bottom of the frontmost separation mechanism 2 communicate the frontmost clear water area 12 and the overflow area 16. Therefore, the water body in the clear water tank is mainly distributed in the three clear water areas 12, and the arrangement of the overflow area 16 can enable the staff to immediately determine that the water body in the clear water tank has reached the water level line when adding water.

[0041] Embodiment Two

[0042] Reference Figures 5-7 The difference between the present embodiment and Embodiment One is that:

[0043] To ensure the plugging effect of the plugging member 224, the front part of the plugging member 224 forms a plugging part 2241 that plugs the pressure relief hole 2211, and the rear part is expanded outward to form a limiting part 2242 that connects the elastic sheet 221 through the plugging spring 223. Specifically, the outer diameter of the plugging part 2241 and the inner diameter of the pressure relief hole 2211 gradually decrease from back to front, the side wall of the plugging part 2241 is recessed in front to form a limiting groove 2243, and the inner wall of the front part of the pressure relief hole 2211 is protruded to form a plurality of limiting protrusions 2212 that are circumferentially spaced and embedded in the limiting groove 2243. The above structure realizes that when the elastic sheet 221 is pressed to arch forward to the front part of the pressure relief hole 2211, the plurality of limiting protrusions 2212 are separated from the limiting groove 2243, and the plugging member 224 can be pushed backward by the gas pressure in the pressure relief cavity 25. Thus, through the forward and backward limiting cooperation of the limiting protrusions 2212 and the limiting groove 2243, the stability of the plugging member 224 plugged in the pressure relief hole 2211 is improved. On this basis, after the elastic sheet 221 arches forward to deform, the rear end of the pressure relief hole 2211 deforms and expands outward, so that the limiting protrusions 2212 and the limiting groove 2243 are separated, to avoid the limiting protrusions 2212 interfering with the plugging member 224 from the pressure relief hole 2211 when the pressure relief device 22 is relieved. That is, by changing the inner diameter of the pressure relief hole 2211 with the plurality of limiting protrusions 2212, the plugging member 224 is automatically clamped and released under the corresponding demand, which not only improves the stability of the plugging member 224, but also ensures that the pressure relief of the pressure relief device 22 can be stably performed.

[0044] Due to the addition of the limiting protrusion 2212, the limiting protrusion 2212 at the partial arc of the elastic sheet 221 is not enough to separate from the limiting groove 2243, which causes the failure of the plugging piece 224 to separate from the pressure relief hole 2211, and further affects the pressure relief efficiency of the pressure relief device 22. Therefore, in order to ensure the stability of the plug separation, the limiting protrusion 2212 is provided in a hemispherical shape, the protrusion on the rear side of the front partition plate 23 is provided with a mounting seat 231 corresponding to the elastic sheet 221, the rear arc-shaped recess of the mounting seat 231 forms an opening to the rear sensing portion 232, the pressure sensor is arranged on the sensing portion 232, and a plurality of electromagnetic valves 233 for repelling the plugging piece 224 are arranged in the mounting seat 231; when the elastic sheet 221 is pressed to arch forward and compress the gas in the pressure relief cavity 25 to trigger the pressure sensor, the plugging piece 224 is pushed backward by the gas pressure in the pressure relief cavity 25, and the electromagnetic valve 233 is opened to repel a plurality of plugging pieces 224 to fully separate from the pressure relief hole 2211. The above structure improves the stability of the plurality of plugging pieces 224 to separate from the pressure relief hole 2211 by adding the pressure sensor and the electromagnetic valve 233, and further ensures the pressure relief efficiency and stability of the pressure relief device 22.

[0045] It should be pointed out that the implementation principle and the technical effects of the embodiment are the same as those of the first embodiment. For the sake of brevity, the embodiment is not mentioned, and the corresponding content in the first embodiment can be referred to.

[0046] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A clean water tank for a sanitation vehicle equipped with a wave-proof mechanism, characterized in that: include: Box (1); A plurality of partitioning mechanisms (2) are arranged at intervals in the box body (1) and divide the box body (1) into a pressure relief zone (11) and a plurality of clean water zones (12) distributed in sequence in front and behind. The bottom of each partitioning mechanism (2) is provided with a plurality of communication channels (21) communicating with adjacent clean water zones (12), and the middle portion is provided with a pressure relief device (22) for releasing pressure to the pressure relief zone (11). The pressure relief zone (11) is connected to the clean water zone (12) via a return line (13); The partition mechanism (2) comprises a front partition (23) and a rear partition (24) with a front and rear spacing therebetween forming a pressure relief chamber (25); the pressure relief chamber (25) is sealed and filled with pressurized gas and is connected to an inflation device; the pressure relief device (22) comprises an elastic sheet (221) embedded in the rear partition (24); an elastic member (222) embedded in the elastic sheet (221) and surrounding in a disc shape; a plurality of pressure relief holes (2211) are provided through the elastic sheet (221); and a plurality of blocking members (224) are respectively blocked in the pressure relief holes (2211) by the tension of blocking springs (223); the pressure relief chamber (25) is controlled by a pressure relief valve (141). The opening and closing pressure relief pipe (14) is connected to the pressure relief area (11), and the bottoms of the front baffle (23) and the rear baffle (24) are penetrated by a plurality of the communication channels (21); when the water in the clean water area (12) leans forward and exerts pressure on the rear baffle (24), the elastic sheet (221) is pressed to arch forward and compress the gas in the pressure relief chamber (25), until the blocking member (224) is pushed back by the gas pressure in the pressure relief chamber (25), and the plurality of pressure relief holes (2211) are connected to the clean water area (12) and the pressure relief chamber (25), so that the clean water is discharged to the pressure relief area (11) through the pressure relief pipe (14); A plurality of wave-proof mechanisms (3) are respectively arranged in the plurality of clear water areas (12), and each of the wave-proof mechanisms (3) includes a plurality of guide rods (31) extending vertically, and a floating layer (32) connected to the plurality of guide rods (31) in an upward and downward sliding manner and covering the water surface of the clear water area (12).

2. A clean water tank for sanitation vehicles provided with a wave-proof mechanism according to claim 1, characterized in that: The inflation device and the top of the pressure relief chamber (25) are connected via a one-way valve (15) for admitting air into the pressure relief chamber (25); when a plurality of the pressure relief holes (2211) are in communication with the clean water area (12) and the pressure relief chamber (25), the gas in the pressure relief chamber (25) enters the clean water area (12); when the water in the clean water area (12) gradually recovers its balance and the pressure on the elastic sheet (221) gradually decreases, the pressure relief chamber (25) is in a negative pressure state, and the one-way valve (15) gradually admits air, so that the elastic member (222) gradually drives the elastic sheet (221) to reset.

3. A clean water tank for sanitation vehicles provided with a wave-proof mechanism according to claim 1, characterized in that: The front part of the plurality of blocking members (224) forms a blocking portion (2241) for blocking the pressure relief hole (2211), and the rear part expands outward to form a limiting portion (2242) connected to the elastic sheet (221) through the blocking spring (223); the front part of the side wall of the blocking portion (2241) is recessed and provided with a limiting groove (2243); the front inner wall of the pressure relief hole (2211) is convex and provided with a plurality of limiting protrusions (2212) arranged at circumferential intervals and embedded in the limiting groove (2243); when the elastic sheet (221) is pressurized and arches forward until the front part of the pressure relief hole (2211) expands and the plurality of limiting protrusions (2212) are separated from the limiting groove (2243), the blocking member (224) can be pushed backward by the gas pressure in the pressure relief chamber (25).

4. A sanitation vehicle clean water tank provided with a wave-proof mechanism as claimed in claim 3, characterized in that: The limiting protrusion (2212) is set to be hemispherical, and the rear protrusion of the front partition (23) is provided with a mounting seat (231) corresponding to the elastic sheet (221), and the rear part of the mounting seat (231) is arc-shaped and recessed to form a sensing portion (232) with a rearward opening, and a pressure sensor is provided on the sensing portion (232). The mounting seat (231) is provided with a plurality of electromagnetic valves (233) for repelling the blocking member (224); when the elastic sheet (221) is pressurized to arch forward and compress the gas in the pressure relief chamber (25) until the pressure sensor is triggered, the blocking member (224) is pushed backward by the gas pressure in the pressure relief chamber (25), and the electromagnetic valve (233) opens to repel the plurality of blocking members (224) backward and fully separate from the pressure relief hole (2211).

5. A clean water tank for sanitation vehicles provided with a wave-proof mechanism according to claim 1, characterized in that: The pressure relief zone (11) is arranged at the rear side of the plurality of clean water zones (12). The pressure relief zone (11) is connected to the clean water zone (12) at the rear side via a return line (13). A liquid level detection device is provided in the pressure relief zone (11). The return line (13) is opened and closed by a return valve (131).

6. A clean water tank for sanitation vehicles provided with a wave-proof mechanism according to claim 1, characterized in that: The partition mechanism (2) is provided with three and divides the box body (1) into an overflow area (16), three clean water areas (12), and a pressure relief area (11) which are distributed sequentially from front to back. The volume of the overflow area (16) and the pressure relief area (11) is much smaller than the volume of the clean water area (12). The top of the box body (1) is provided with three inspection windows (17) corresponding to the three clean water areas (12). The upper front part of the box body (1) is provided with an overflow port (18) connected to the overflow area (16). The plurality of connecting channels (21) at the bottom of the partition mechanism (2) at the frontmost side connect the clean water area (12) at the frontmost side and the overflow area (16).

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