Cleaning device for interior of tank

Abstract

The invention relates to the technical field of tank washing equipment, in particular to a tank interior cleaning device which comprises a water supply mechanism, a rotating head is rotationally arranged on the water supply mechanism, a water inlet groove is formed in the end, rotationally matched with the water supply mechanism, of the rotating head, and a water spraying pipe is movably connected to the outer surface of the rotating head through a connecting assembly. Water channels are formed in the positions, corresponding to the connecting assemblies, of the rotating head, water pressure detection assemblies and water flow balance parts are arranged in the water channels, and a water outlet pressure control assembly is arranged at an outlet of the water spraying pipe. The water spraying device has the beneficial effects that by arranging the connecting assembly, the water spraying pipe, the water pressure detection assembly and the water outlet pressure control assembly, when the water supply pressure is increased, the water spraying pipe is adjusted to be in an inclined state, and the caliber of an outlet of the water spraying pipe is decreased accordingly, so that the water spraying pressure and the coverage area can be increased; and dirt, grease, bacteria and other attachments on the inner wall of the tank body are more effectively struck and stripped, the cleaning efficiency is improved, and the cleaning time is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of tank washing equipment, in particular to a cleaning device for the inside of a tank. Background Art

[0002] The tank internal cleaning device is a device used to clean the internal surface of various tanks. These tanks may be used to store liquids, chemicals, food and beverages, etc. The common cleaning device is a three-dimensional tank washing device; The three-dimensional tank washer is an industrial cleaning equipment that achieves three-dimensional cleaning of the inside of the container by means of a rotating nozzle that moves simultaneously in the horizontal and vertical directions.

[0003] A three-dimensional tank washer is disclosed in Chinese patent CN217616623U. The three-dimensional tank washer realizes that the nozzle can rotate in the vertical direction and in the horizontal direction at the same time, so that the tank washer can perform three-dimensional comprehensive cleaning of the inner wall of the tank body, so that the cleaning efficiency of the inner wall of the tank body is improved, and the inner wall of the tank body is cleaned more cleanly.

[0004] However, compared with the prior art in the related field, the prior art has the following disadvantages: Insufficient impact force: If the nozzle of the existing tank washer uses a constant flow, it cannot provide enough impact force to effectively strike and peel off the stubborn dirt on the inner wall of the tank; Problems of water resource waste and scale accumulation: If the existing tank cleaning machine nozzle uses high-pressure direct spray continuously, the cleaning efficiency is not high, and the water flow cannot penetrate into the tiny gaps on the inner wall of the tank, which may cause the accumulation of scale and other dirt, affecting the cleanliness and hygiene of the tank. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art, solve the problems mentioned in the background technology, and provide a cleaning device for the inside of a tank.

[0006] The object of the present invention is achieved through the following technical solutions: a cleaning device for the inside of a tank, comprising a water supply mechanism, a rotating head is rotatably provided on the water supply mechanism, a water inlet groove is provided at one end of the rotating head that is rotatably matched with the water supply mechanism, a water spray pipe is movably connected to the outer surface of the rotating head through a connecting component, water channels are opened at positions of the rotating head corresponding to multiple connecting components, a water pressure detection component and a water flow balance are provided inside the water channel, one end of the water flow balance is fixedly arranged inside the water channel, a water outlet pressure control component is provided at the outlet of the water spray pipe, and a driving mechanism for controlling the rotation of the rotating head is provided on the water supply mechanism; When the water supply pressure of the water supply mechanism is high, the water pressure detection component detects the change in water pressure and prompts the connecting component to drive the water spray pipe to tilt to the side away from the water inlet trough. At this time, the water outlet pressure control component is affected by the water pressure, causing the nozzle of the water spray pipe to gradually become smaller, thereby increasing the water spray pressure of the water spray pipe. When the water supply pressure of the water supply mechanism is low, the water pressure detection component detects the change in water pressure and prompts the connecting component to drive the water spray pipe to tilt to the side of the water inlet trough. At this time, the water outlet pressure control component is affected by the water pressure, causing the nozzle of the water spray pipe to gradually become larger, thereby reducing the water spray pressure of the water spray pipe while increasing the coverage of the water flow.

[0007] Furthermore, the connecting component includes a movable part, a movable groove is opened at a position of the rotating head corresponding to the movable part, the movable groove is connected to the waterway, and a connecting hole is opened at the center of the movable part corresponding to the water spray pipe.

[0008] Furthermore, the water pressure detection assembly includes a first elastic member fixedly arranged inside the water channel, the first elastic member is hinged with a hinge at one end away from the fixed connection with the water channel, and the hinge is fixedly connected to the movable member at one end away from the first elastic member.

[0009] Furthermore, the movable part is spherical in shape, and the movable groove is a spherical groove. The spherical movable part cooperates with the spherical groove to ensure the movable part's movement while having a sealing property to prevent water from escaping from the gap between the movable part and the movable groove when the movable part moves.

[0010] Furthermore, the cross-sections of the first elastic member and the water flow balancing member are both arc-shaped, and the length of the water flow balancing member is smaller than the length of the first elastic member.

[0011] Furthermore, the water outlet pressure control component includes a movable seat slidably arranged inside the water spray pipe, the movable seat is connected to the pipe mouth of the water spray pipe through two second elastic members, and a through hole for allowing water to pass through is provided at the center of the movable seat.

[0012] Furthermore, the connecting hole and the inner hole of the water spray pipe are both rectangular.

[0013] Furthermore, the bottom of the movable seat is formed with a chamfered surface.

[0014] Furthermore, the water supply mechanism includes a fixing part, an installation groove and a rotation groove are provided inside the fixing part, one end of the rotating head is connected to the rotation groove through a sealing bearing, and a water supply pipe connected to the rotation groove is fixed on the outer surface of the fixing part.

[0015] Furthermore, the driving mechanism includes a motor fixedly installed inside the mounting groove, a turntable is fixedly installed on the output end of the motor, the turntable and the rotating head are fixedly connected through a plurality of connecting rods, and the turntable is connected to the mounting groove through a sealed bearing.

[0016] The beneficial effects of the present invention are as follows: by setting a connecting component, a water spray pipe, a water pressure detection component and a water outlet pressure control component, utilizing the inclined design of the water spray pipe and the dynamic adjustment of the water outlet pressure, and combining the linkage of the water pressure detection component and the water outlet pressure control component, automatic adjustment of the water spray angle and pressure is achieved. Compared with traditional cleaning devices with a fixed angle or a single pressure, the present invention can dynamically adjust the inclination angle and the size of the nozzle of the water spray pipe according to changes in the water supply pressure, thereby enhancing the impact force of the water flow under high pressure and stripping stubborn dirt, and expanding the water flow coverage under low pressure to meet different cleaning needs; in addition, the cleaning efficiency is further improved through the turbulent design. Compared with the traditional laminar flow cleaning method, the dirt stripping effect and cleaning quality are significantly improved, while reducing the waste of water resources and energy consumption, and has higher adaptability and energy-saving and environmental protection advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the structure of the fixing member of the present invention; Figure 2 It is a schematic diagram of the first axis side of the rotating head when the water spray pipe is directly spraying according to the present invention; Figure 3 It is a schematic diagram of the second axis side of the rotating head when the water spray pipe is directly spraying according to the present invention; Figure 4 It is a schematic diagram of the first axis side of the rotating head when the water spray pipe of the present invention sprays obliquely; Figure 5 It is a schematic diagram of the second axis side of the rotating head when the water spray pipe of the present invention sprays obliquely; Figure 6 It is a structural schematic diagram of the connection assembly and the water pressure detection assembly of the present invention; Figure 7 It is a structural schematic diagram of the water outlet pressure control assembly of the present invention; Figure 8 It is a structural schematic diagram of the water supply mechanism and the driving mechanism of the present invention; Fig. 9 It is a schematic structural diagram of the connecting rod of the present invention.

[0019] In the figure: 1. water supply mechanism; 101. fixing part; 1011. mounting groove; 1012. rotating groove; 102. water supply pipe; 2. rotating head; 201. water inlet groove; 202. waterway; 203. movable groove; 3. connecting assembly; 301. movable part; 302. connecting hole; 4. water spray pipe; 5. water pressure detection assembly; 501. first elastic part; 502. hinged part; 6. water flow balance part; 7. water outlet pressure control assembly; 701. movable seat; 702. second elastic part; 8. driving mechanism; 801. motor; 802. turntable; 803. connecting rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Additional aspects and advantages of the present invention will be further given in the following description in conjunction with the accompanying drawings, and in part will become apparent from the following description, or may be learned through practice of the present invention.

[0022] An embodiment of a cleaning device for the interior of a tank according to the present invention is as follows: Figures 1 to 9As shown, it includes a water supply mechanism 1, a rotating head 2 is rotatably provided on the water supply mechanism 1, a water inlet groove 201 is provided at one end of the rotating head 2 that is rotatably matched with the water supply mechanism 1, the outer surface of the rotating head 2 is movably connected to a water spray pipe 4 through a connecting component 3, water channels 202 are opened at positions of the rotating head 2 corresponding to multiple connecting components 3, a water pressure detection component 5 and a water flow balance member 6 are provided inside the water channel 202, one end of the water flow balance member 6 is fixedly arranged inside the water channel 202, a water outlet pressure control component 7 is provided at the outlet of the water spray pipe 4, and a driving mechanism 8 for controlling the rotation of the rotating head 2 is provided on the water supply mechanism 1; when the water supply pressure of the water supply mechanism 1 is large, the water pressure detection component 5 and the water flow balance member 6 are provided inside the water channel 202, and the water pressure control component 7 is provided at the outlet of the water spray pipe 4. When the water pressure detection component 5 detects the change in water pressure, it prompts the connecting component 3 to drive the water spray pipe 4 to tilt to the side away from the water inlet tank 201. At this time, the water outlet pressure control component 7 is affected by the water pressure, so that the nozzle of the water spray pipe 4 gradually becomes smaller, thereby increasing the water spraying pressure of the water spray pipe 4. When the water supply pressure of the water supply mechanism 1 is small, the water pressure detection component 5 detects the change in water pressure and prompts the connecting component 3 to drive the water spray pipe 4 to tilt to the side of the water inlet tank 201. At this time, the water outlet pressure control component 7 is affected by the water pressure, so that the nozzle of the water spray pipe 4 gradually becomes larger, thereby reducing the water spraying pressure of the water spray pipe 4 while increasing the coverage of the water flow (such as Figures 2 to 5 as shown).

[0023] like Figure 1 and Figure 8 As shown, the water supply mechanism 1 includes a fixing member 101, an installation groove 1011 and a rotation groove 1012 are provided inside the fixing member 101, one end of the rotating head 2 is connected to the rotating groove 1012 through a sealing bearing, and a water supply pipe 102 connected to the rotating groove 1012 is fixed on the outer surface of the fixing member 101. The sealing bearing can reduce the friction force when the rotating head 2 rotates, and prevent water from escaping from the gap between the rotating head 2 and the rotating groove 1012.

[0024] like Figure 1 , Figure 3 , Figure 8 and Fig. 9As shown, the driving mechanism 8 includes a motor 801 fixedly installed inside the mounting groove 1011, and a turntable 802 is fixedly installed at the output end of the motor 801. The turntable 802 is fixedly connected to the rotating head 2 through multiple connecting rods 803. The turntable 802 is connected to the mounting groove 1011 through a sealed bearing. The provided sealed bearing can reduce the friction force when the turntable 802 rotates and prevent water from entering the mounting groove 1011. When the device is placed inside the tank body, water is supplied to the rotating groove 1012 through the water supply pipe 102, and then the water enters the multiple water channels 202 through the water inlet groove 201. After that, the water enters the water spray pipe 4 from the connecting hole 302 of the movable part 301, and then the water is sprayed out through the water spray pipe 4. At this time, the turntable 802 is controlled to rotate by the motor 801, and the turntable 802 drives the rotating head 2 to rotate through the multiple connecting rods 803. When the rotating head 2 rotates, the water spray pipe 4 can allow the water flow to fully rinse the inner wall of the tank body.

[0025] like Figure 3 , Figure 5 and Figure 6 As shown, the connecting assembly 3 includes a movable part 301, a movable groove 203 is opened at the position of the rotating head 2 corresponding to the movable part 301, and the movable groove 203 is connected to the water channel 202. A connecting hole 302 is opened at the center of the movable part 301 corresponding to the water spray pipe 4. The connecting hole 302 and the inner hole of the water spray pipe 4 are both rectangular. A sealing ring (not shown in the figure) is provided on the outer surface of the movable part 301. The shape of the movable part 301 is spherical, and the movable groove 203 is a spherical groove. The spherical movable part 301 cooperates with the spherical groove to ensure the movable part 301 while having a sealing characteristic, so as to prevent water from escaping from the gap between the movable part 301 and the movable groove 203 when the movable part 301 is moving (the above principle is the same as that of the ball valve).

[0026] like Figure 3 , Figure 5 and Figure 6 As shown, the water pressure detection component 5 includes a first elastic member 501 fixedly arranged inside the waterway 202, one end of the first elastic member 501 is fixedly connected to the waterway 202, the first elastic member 501 is hinged with a hinge 502 at one end away from the fixed connection with the waterway 202, and the hinge 502 is fixedly connected to the movable member 301 at one end away from the first elastic member 501. The cross-sections of the first elastic member 501 and the water flow balancing member 6 are both arc-shaped, and the length of the water flow balancing member 6 is less than the length of the first elastic member 501. The water flow balancing member can be used to balance the flow of water inside the waterway 202.

[0027] Combined with the above structure: Figures 2 to 6As shown, when the water supply pressure of the water supply mechanism 1 is high, the water pressure detection component 5 detects the change in water pressure and prompts the connecting component 3 to drive the water spray pipe 4 to tilt to the side away from the water inlet groove 201 (the water pressure increases, the first elastic member 501 is affected by the water pressure and deforms, thereby utilizing the extension effect of the first elastic member 501 when deformed to prompt the hinge 502 to control the movable member 301 and the water spray pipe 4 to tilt to the side away from the water inlet groove 201), so that the water spray pipe 4 is adjusted to an oblique spray state. When the water spray pipe 4 is inclined, firstly, the direction of the water flow forms a certain angle with the inner wall of the tank body, which can increase the impact force of the water flow on the inner wall. This oblique spray can more effectively strike and peel off stubborn residues such as dirt, bacteria, grease, etc. on the inner wall of the tank body; secondly, the oblique water spray can make the water flow cover more areas of the inner wall of the tank body, especially in corners and grooves that are difficult to reach by vertical water spray, thereby improving Overall cleaning quality; thirdly, by tilting water spraying, the water flow can penetrate more deeply into the tiny gaps on the inner wall of the tank body, which helps to reduce the accumulation of scale and other dirt and keep the inside of the tank clean; when the water supply pressure of the water supply mechanism 1 is small, the water pressure detection component 5 detects the change in water pressure, prompting the connecting component 3 to drive the water spray pipe 4 to tilt toward one side of the water inlet tank 201 (the water pressure is reduced, and the elastic force of the first elastic member 501 is used to gradually increase its bending amplitude, and then the hinge 502 can control the movable member 301 and the water spray pipe 4 to tilt toward one side of the water inlet tank 201), so that the water spray pipe 4 is adjusted to a direct spray state. Since the tilted water spraying improves the cleaning efficiency, the water usage can be reduced in some cases while maintaining or improving the cleaning effect. When high-pressure cleaning is not required, low-flow large-area rewashing can be used, thereby improving the cleaning effect without increasing energy consumption.

[0028] like Figure 3 , Figure 5 and Figure 7As shown, the water outlet pressure control assembly 7 includes a movable seat 701 slidably arranged inside the water spray pipe 4, the movable seat 701 is matched with the nozzle of the water spray pipe 4 through two second elastic members 702, the ends of the two second elastic members 702 are fixedly connected to the movable seat 701, and the ends of the two second elastic members 702 away from the movable seat 701 are fixedly connected to the inner wall of the water spray pipe 4, the center of the movable seat 701 is provided with a through hole for allowing water to pass through, and the bottom of the movable seat 701 is formed with a chamfered surface. First, the chamfered surface can be used to To improve the effect of water flowing into the through hole, secondly, the arc-shaped second elastic member 702 may cause the water flow to generate shear force at the outlet of the water spray pipe 4, and this shear force can break the laminar state of the water flow, thereby promoting the formation of turbulence (when the water flow speed exceeds a certain threshold, usually called the critical speed, the flow will be adjusted from laminar flow to turbulent flow). In the turbulent state, the impact force of the water flow is enhanced, which can more effectively strike and peel off dirt, grease, bacteria and other attachments on the inner wall of the tank body, thereby improving the cleaning efficiency and reducing the cleaning time.

[0029] Combined with the above structure: Figures 2 to 7 As shown, when the water supply pressure of the water supply mechanism 1 is high, the water outlet pressure control component 7 is affected by the water pressure, and the movable seat 701 will slide toward the outlet of the water spray pipe 4, thereby prompting the two second elastic members 702 to deform (bend). When the two second elastic members 702 are deformed, the gap between them will gradually become smaller, thereby increasing the water spray pressure of the water spray pipe 4. When the water supply pressure of the water supply mechanism 1 is low, the water outlet pressure control component 7 is affected by the change in water pressure reduction, and uses the elastic force of the two second elastic members 702 to make the movable seat 701 slide away from the outlet of the water spray pipe 4. The bending amplitude of the two second elastic members 702 will gradually decrease, and the gap between them will gradually increase, thereby reducing the water spray pressure of the water spray pipe 4 while increasing the coverage of the water flow.

[0030] The water supply mechanism 1, the motor 801 and the sealed bearing described in the present application are well-known technologies in the technical field, so their specific structures and working principles are not described in detail.

[0031] The working process is as follows: S1: When in use, place the device inside the tank; S2: Figure 1 , Figure 2 , Figure 3 and Figure 8As shown, when the device is placed inside the tank, water is supplied to the rotating tank 1012 through the water supply pipe 102, and then the water enters the multiple water channels 202 through the water inlet tank 201, and then the water enters the water spray pipe 4 from the connecting hole 302 of the movable part 301, and then the water is sprayed out through the water spray pipe 4. At this time, the motor 801 controls the rotation of the turntable 802, and the turntable 802 drives the rotating head 2 to rotate through multiple connecting rods 803. When the rotating head 2 rotates, the water spray pipe 4 can allow the water flow to fully wash the inner wall of the tank; S3: Figure 1 and Figure 8 As shown, when stubborn dirt needs to be cleaned, the water supply pressure of the water supply mechanism 1 is increased; S4: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, when the water supply pressure of the water supply mechanism 1 is high, the water pressure detection component 5 detects the change in water pressure and prompts the connection component 3 to drive the water spray pipe 4 to tilt to the side away from the water inlet groove 201 (when the water pressure increases, the first elastic member 501 will be affected by the water pressure and deform, so as to utilize the extension effect of the first elastic member 501 when deformed to prompt the hinge 502 to control the movable member 301 and the water spray pipe 4 to tilt to the side away from the water inlet groove 201), so that the water spray pipe 4 is adjusted to an oblique spraying state; S5: Figure 1 , Figure 3 , Figure 5 , Figure 7 and Figure 8 As shown, when the water supply pressure of the water supply mechanism 1 is high, the water outlet pressure control assembly 7 is affected by the water pressure, and the movable seat 701 slides toward the outlet of the water spray pipe 4, thereby causing the two second elastic members 702 to deform (bend). When the two second elastic members 702 are deformed, the gap between them will gradually become smaller, thereby increasing the water spray pressure of the water spray pipe 4; S6: In summary: when the water spray pipe 4 is tilted, firstly, the direction of the water flow forms a certain angle with the inner wall of the tank body, which can increase the impact force of the water flow on the inner wall. This oblique spraying can more effectively strike and peel off stubborn residues such as dirt, bacteria, grease, etc. on the inner wall of the tank body; secondly, the inclined water spraying can make the water flow cover more areas of the inner wall of the tank body, especially in corners and grooves that are difficult to reach by vertical water spraying, thereby improving the overall cleaning quality; thirdly, by tilting the water spraying, the water flow can penetrate deeper into the tiny gaps on the inner wall of the tank body, which helps to reduce the accumulation of scale and other dirt and keep the inside of the tank body clean; S7: Figure 1 and Figure 8As shown, when simple cleaning is needed, the water supply pressure of the water supply mechanism 1 is reduced; S8: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, when the water supply pressure of the water supply mechanism 1 is small, the water pressure detection component 5 detects the change in water pressure, prompting the connection component 3 to drive the water spray pipe 4 to tilt toward one side of the water inlet tank 201 (the water pressure decreases, and the elastic force of the first elastic member 501 is used to gradually increase its bending amplitude, and then the hinge 502 can control the movable member 301 and the water spray pipe 4 to tilt toward one side of the water inlet tank 201), so that the water spray pipe 4 is adjusted to a direct spray state; S9: Figure 1 , Figure 3 , Figure 5 , Figure 7 and Figure 8 As shown, when the water supply pressure of the water supply mechanism 1 is low, the water outlet pressure control assembly 7 is affected by the change in water pressure reduction, and uses the elastic force of the two second elastic members 702 to make the movable seat 701 slide away from the outlet of the water spray pipe 4, and the bending amplitude of the two second elastic members 702 gradually decreases, and the gap between them gradually increases, thereby reducing the water spray pressure of the water spray pipe 4 while increasing the coverage of the water flow; S10: In summary, since inclined water spraying improves cleaning efficiency, it can reduce water usage in some cases while maintaining or improving the cleaning effect. When high-pressure cleaning is not required, low-flow large-area rewashing can be used, thereby improving the cleaning effect without increasing energy consumption.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cleaning device for the inside of a tank, characterized in that: The invention comprises a water supply mechanism (1), wherein a rotating head (2) is rotatably provided on the water supply mechanism (1), a water inlet groove (201) is provided at one end of the rotating head (2) rotatably matched with the water supply mechanism (1), a water spray pipe (4) is movably connected to the outer surface of the rotating head (2) via a connecting component (3), water channels (202) are provided at positions of the rotating head (2) corresponding to a plurality of the connecting components (3), a water pressure detection component (5) and a water flow balance component (6) are provided inside the water channel (202), one end of the water flow balance component (6) is fixedly arranged inside the water channel (202), a water outlet pressure control component (7) is provided at the outlet of the water spray pipe (4), and a driving mechanism (8) for controlling the rotation of the rotating head (2) is provided on the water supply mechanism (1); When the water supply pressure of the water supply mechanism (1) is high, the water pressure detection component (5) detects the change in water pressure and prompts the connection component (3) to drive the water spray pipe (4) to tilt toward the side away from the water inlet groove (201). At this time, the water outlet pressure control component (7) is affected by the water pressure, causing the nozzle of the water spray pipe (4) to gradually become smaller, thereby increasing the water spray pressure of the water spray pipe (4). When the water supply pressure of the water supply mechanism (1) is low, the water pressure detection component (5) detects the change in water pressure and prompts the connection component (3) to drive the water spray pipe (4) to tilt toward the side of the water inlet groove (201). At this time, the water outlet pressure control component (7) is affected by the water pressure, causing the nozzle of the water spray pipe (4) to gradually become larger, thereby reducing the water spray pressure of the water spray pipe (4) and increasing the coverage of the water flow.

2. A cleaning device for the inside of a tank according to claim 1, characterized in that: The connecting assembly (3) comprises a movable part (301), the rotating head (2) is provided with a movable groove (203) at a position corresponding to the movable part (301), the movable groove (203) is connected to the water channel (202), and the movable part (301) is provided with a connecting hole (302) at a position corresponding to the center of the water spray pipe (4).

3. A cleaning device for the inside of a tank according to claim 2, characterized in that: The water pressure detection assembly (5) comprises a first elastic member (501) fixedly arranged inside the water channel (202), an end of the first elastic member (501) away from the fixed connection with the water channel (202) being hinged to a hinged member (502), and an end of the hinged member (502) away from the first elastic member (501) being fixedly connected to the movable member (301).

4. A cleaning device for the inside of a tank according to claim 2, characterized in that: The movable part (301) is spherical in shape, and the movable groove (203) is a spherical groove. The spherical movable part (301) cooperates with the spherical groove to ensure the movable part (301) can move while having a sealing property, thereby preventing water from escaping from the gap between the movable part (301) and the movable groove (203) when the movable part (301) moves.

5. A tank cleaning device according to claim 3, characterized in that: The cross-sections of the first elastic member (501) and the water flow balancing member (6) are both arc-shaped, and the length of the water flow balancing member (6) is smaller than the length of the first elastic member (501).

6. A cleaning device for the inside of a tank according to claim 4, characterized in that: The water outlet pressure control assembly (7) comprises a movable seat (701) slidably arranged inside the water spray pipe (4); the movable seat (701) is cooperatively connected to the pipe mouth of the water spray pipe (4) via two second elastic members (702); and a through hole for allowing water to pass through is provided at the center of the movable seat (701).

7. A cleaning device for the inside of a tank according to claim 6, characterized in that: The communicating hole (302) and the inner hole of the water spray pipe (4) are both rectangular.

8. A tank cleaning device according to claim 6, characterized in that: The bottom of the movable seat (701) is formed with a chamfered surface.

9. A tank cleaning device according to claim 1, characterized in that: The water supply mechanism (1) comprises a fixing member (101), a mounting groove (1011) and a rotating groove (1012) are provided inside the fixing member (101), one end of the rotating head (2) is connected to the rotating groove (1012) via a sealing bearing, and a water supply pipe (102) connected to the rotating groove (1012) is fixedly provided on the outer surface of the fixing member (101).

10. A tank cleaning device according to claim 9, characterized in that: The driving mechanism (8) comprises a motor (801) fixedly mounted inside the mounting groove (1011); a rotating disk (802) is fixedly mounted on the output end of the motor (801); the rotating disk (802) is fixedly connected to the rotating head (2) via a plurality of connecting rods (803); and the rotating disk (802) is cooperatively connected to the mounting groove (1011) via a sealed bearing.

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