Maintenance equipment for containing tank of foam fire truck

Abstract

The invention relates to the related technical field of fire fighting equipment, and discloses maintenance equipment for a foam fire fighting truck containing tank, the maintenance equipment comprises a maintenance box body, a water supply part and a plurality of nozzles, and further comprises an adjusting part and a lifting part; the adjusting part comprises an upper rotary stretching mechanism, a driving mechanism and a lower rotary reciprocating mechanism and is used for adjusting the working angle of the spray head in real time; when the upper rotation stretching mechanism is in an unfolded state, the annular reinforcing rib in the containing tank is located on the vertical movement track of the lower rotation reciprocating mechanism. Therefore, residues such as foam in the tank body are prevented from being accumulated at dead corners in the tank body, namely the interior of the containing tank is flushed without dead corners, the possibility of corrosion and scale deposition in the containing tank is reduced, the service life of the containing tank is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field related to fire fighting equipment, and in particular to maintenance equipment for a foam fire fighting truck tank. Background Art

[0002] Fire truck tank maintenance is one of the important measures to maintain the normal operation of the fire protection system, ensure the fire extinguishing effect and protect the safety of the environment. Regular cleaning and maintenance can ensure that the fire fighting equipment can play a reliable role when needed and protect the lives and property of the people. Especially for the foam fire truck tank, since it is always fully loaded with fire extinguishing agent, the immersion of fire extinguishing agent will corrode the tank to a certain extent. It is very important to inspect and maintain the tank in time.

[0003] The existing foam fire truck tank generally uses a manual handheld high-pressure water gun or a cleaning machine to clean the inside of the tank from top to bottom at the tank mouth. However, the inside of the foam fire truck tank is often provided with reinforcing ribs or supporting structures to enhance the strength and stability of the tank body. The types of reinforcing ribs are divided into annular reinforcing ribs and longitudinal reinforcing ribs. When annular reinforcing ribs are used to strengthen the strength of the tank body, the existing cleaning method has obvious cleaning dead angles, wherein the cleaning dead angles include but are not limited to the top wall of the tank body, the bottom of the annular reinforcing ribs, and the connection between the bottom wall of the annular reinforcing ribs and the inner wall of the tank body. Residues that are not cleaned in the cleaning dead angles will remain in the dead angles, causing problems such as corrosion of the inner wall of the tank body, thereby greatly reducing the service life of the tank. Summary of the invention

[0004] The present invention provides maintenance equipment for a foam fire truck tank, which solves the problem that the prior art generally adopts a manually held high-pressure water gun or a cleaning machine to clean the inside of the tank from top to bottom at the tank mouth. However, the inside of the foam fire truck tank is usually provided with reinforcing ribs or a supporting structure to enhance the strength and stability of the tank body, wherein the types of reinforcing ribs are divided into annular reinforcing ribs and longitudinal reinforcing ribs. Therefore, when annular reinforcing ribs are used to strengthen the strength of the tank body, the existing cleaning method has obvious cleaning dead angles, wherein the cleaning dead angles include but are not limited to the top wall of the tank body, the bottom of the annular reinforcing ribs, and the connection between the bottom wall of the annular reinforcing ribs and the inner wall of the tank body. Therefore, the residues that are not cleaned in the cleaning dead angles will remain in the dead angles, which will cause corrosion of the inner wall of the tank body and other problems, thereby greatly reducing the service life of the tank.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows: An embodiment of the present invention provides a maintenance device for a foam fire truck tank, the maintenance device comprising a maintenance box, a water supply part and a plurality of nozzles, and the maintenance device further comprises: An adjustment part, arranged in the middle of the curing box, for controlling the angle and position of the nozzle; and The lifting part is arranged inside the curing box and is used to synchronously control the lifting and lowering of the container and the rotation of the adjusting part; Wherein, the adjustment unit comprises: The upward rotation extension mechanism is used to adjust the initial angle and position of the nozzle; A driving mechanism is disposed on the lifting portion and is located directly above the upward rotation and extension mechanism, and is used to provide power for adjusting the initial angle of the nozzle and for the upward rotation and extension mechanism to be deployed; and The downward rotating reciprocating mechanism is arranged on the upward rotating extension mechanism and is used to adjust the working angle of the nozzle in real time; Wherein, the nozzle is arranged on the upward rotating extension mechanism, and the nozzle is located above the downward rotating reciprocating mechanism; When the upward rotating and extending mechanism is in the expanded state, the annular reinforcing ribs in the container are located on the vertical moving track of the downward rotating reciprocating mechanism.

[0006] Furthermore, the maintenance box is provided with a notch for accommodating the placement of the container.

[0007] Furthermore, the lifting portion includes: The driving motor is detachably arranged in the middle of the top of the curing box body, and is used to provide driving force for the lifting of the container and the rotation of the adjustment part; The first mounting plate is provided in at least one group and is fixedly arranged on the inner wall of the curing box and is located directly below the driving motor; The second mounting plate, at least one set, is fixedly mounted on the inner wall of the curing box and is located directly below the first mounting plate; A first transmission shaft is rotatably disposed on the first mounting plate and is detachably connected to an output shaft of the driving motor via a coupling; A second transmission shaft is rotatably mounted on the second mounting plate, one end of which is transmission-connected to the end of the first transmission shaft away from the output shaft of the driving motor via a ratchet pawl pair, and the other end of which is fixedly provided with an adjustment portion; and A lifting plate is arranged directly below the driving motor and is used to provide a support surface for placing the container; The transmission mechanism is symmetrically arranged on both sides of the first mounting plate and the second mounting plate and is located between the driving motor and the lifting plate, and is used for power transmission between the driving motor and the lifting plate.

[0008] Furthermore, the transmission mechanism comprises: The first support, at least one group is provided, and is fixedly arranged on the top inner wall of the curing box; The driving screw is rotatably arranged inside the curing box; A transmission shaft is rotatably disposed on the first support and is located between the driving screw and the first transmission shaft; A driving bevel gear is fixedly arranged on the first transmission shaft; A driven bevel gear is fixedly disposed at the end of the transmission shaft and meshes with the driving bevel gear; and A connecting plate is arranged on the driving screw rod and is matched with the thread of the driving screw rod; Among them, the number of gears of the driving bevel gear is less than the number of gears of the driven bevel gear, the connecting plate is slidably set on the inner wall of the maintenance box body, the end of the transmission shaft away from the first transmission shaft is connected to the driving screw through a bevel gear pair, and the lifting plate is fixedly set on the connecting plate.

[0009] Furthermore, the driving mechanism comprises: A drive mounting frame, fixedly disposed at the bottom of the second transmission shaft; and A driving cylinder is fixedly arranged on the top inner wall of the driving mounting frame; Wherein, the upward rotation and extension mechanism is arranged on the driving installation frame and is fixedly connected to the telescopic end of the driving cylinder.

[0010] Furthermore, the upward rotation and stretching mechanism includes: Extension mounting frames, at least two sets are provided, and are arranged on both sides of the drive mounting frame; A driving column, fixedly arranged at the telescopic end of the driving cylinder and vertically slidably arranged in the driving mounting frame; The extension support plate corresponds to the extension installation frame one by one, and is horizontally elastically slidably arranged in the drive installation frame with damping; A connecting support rod, at least one set, one end of which is fixedly arranged on the outer side wall of the extension mounting frame, and the other end of which penetrates the driving mounting frame and is fixedly arranged on the extension support plate; An adjustment slot is provided on the extension support plate at a side away from the connecting support rod; A driving block is elastically slidably disposed in the adjusting groove, and a surface facing the driving column is arranged as an inclined surface; and An angle adjustment unit is disposed between the driving block and the extension mounting frame; Among them, a gap is set between the extension support plate and the inner wall of the adjacent drive installation frame, the surface of the drive column opposite to the inclined surface of the drive block is a inclined surface setting that cooperates with the inclined surface of the drive block, the nozzle is set on the angle adjustment unit, the downward rotating reciprocating mechanism is set in the extension installation frame, and the moving width of the drive block is greater than the groove depth of the adjustment groove.

[0011] Furthermore, the angle adjustment unit includes: An angle adjustment driving plate passes through the extension mounting frame and the driving mounting frame, one end of which is fixedly arranged on the driving block and the other end of which is located in the extension mounting frame; An angle adjustment shaft is rotatably arranged on the extension mounting frame; Fixed support rods, at least one set, fixedly arranged on the angle adjustment shaft; The movable support rods correspond to the fixed support rods one by one, and are elastically rotatably arranged at the ends of the fixed support rods with damping; and The second resetting support unit is arranged between the movable support rod and the inner wall of the extension installation frame.

[0012] The angle adjustment shaft and the angle adjustment driving plate are connected via a gear rack pair, and the nozzle is arranged at the end of the movable support rod away from the fixed support rod.

[0013] Furthermore, the downward rotating reciprocating mechanism comprises: A fixed shaft, fixedly arranged on the extension mounting frame and located below the angle adjustment driving plate; A reciprocating drive rod is rotatably disposed on a fixed shaft; A first reset support unit is disposed between the reciprocating drive rod and the inner wall of the extension mounting frame; A transition mounting rod, slidably disposed on the extension mounting frame; The reciprocating transmission rod corresponds to the movable support rod one by one and is fixedly arranged on the transition mounting rod; A transition drive rod, one end of which is rotatably disposed on the reciprocating transmission rod, and the other end of which is rotatably disposed on the movable support rod; and A reciprocating transmission unit is arranged between the reciprocating transmission rod and the reciprocating drive rod; Wherein, the reciprocating driving rod and the movable supporting rod are staggered. When the extension mounting frame is in the extended state, the annular reinforcing rib in the container is located on the vertical moving track of the reciprocating driving rod.

[0014] Furthermore, the reciprocating transmission unit comprises: An arc-shaped rack plate is fixedly arranged on the reciprocating drive rod; A reciprocating driven shaft is rotatably mounted on the extension mounting frame; The reciprocating driving shaft corresponds to the arc-shaped rack plate and is rotatably arranged on the reciprocating driven shaft; The reciprocating driving gear corresponds to the arc-shaped rack plate and is fixedly arranged on the reciprocating driving shaft; An arc-shaped avoidance groove is provided in the reciprocating driving shaft; and A limit stopper is fixedly arranged on the reciprocating driven shaft and is located in the arc-shaped avoidance groove; Wherein, the transition mounting rod is located below the arc-shaped rack plate, and the reciprocating driven shaft and the reciprocating transmission rod are connected through a gear rack pair; When the reciprocating transmission rod moves upward, the limit stopper rotates in the arc-shaped avoidance groove, and there is no relative action relationship between the limit stopper and the reciprocating driving shaft; When the reciprocating transmission rod moves downward, a relative action relationship exists between the limit stopper and the reciprocating driving shaft.

[0015] Furthermore, the second transmission shaft is hollow inside, and the water supply part includes: A water tank is fixedly mounted on the second mounting plate; A water pump is fixedly mounted on the second mounting plate; A transition water storage frame is rotatably and sealingly disposed on the second transmission shaft and is interconnected with the second transmission shaft; Among them, the transition water storage frame is fixedly set on the second mounting plate, the water tank and the water pump, as well as the water pump and the transition water storage frame are fixedly connected through an infusion pipe, one end of the liquid inlet pipe is removably sealed and connected to the nozzle, and the other end is removably sealed and connected to the second transmission shaft, and the connection between the liquid inlet pipe and the second transmission shaft is located on the second transmission shaft between the second mounting plate and the drive mounting frame.

[0016] The above solution of the present invention includes at least the following beneficial effects: The present invention provides a lifting part that can slowly lift the container and drive the adjusting part to rotate quickly at the same time. After the upward rotation and extension mechanism and the downward rotation and reciprocating mechanism of the adjusting part enter the container, the driving mechanisms of the water supply part and the adjusting part are started, driving the upward rotation and extension mechanism to adjust the initial angle and position of the spray head and driving the upward rotation and extension mechanism to expand. At this time, the spray head rotates and rises above the horizontal plane, and the cleaning liquid in the spray head sprays and cleans the inner wall at the top of the container and the upper part of the inner side wall of the container; when the upward rotation and extension mechanism is in the expanded state, the annular reinforcement rib in the container is located on the vertical movement track of the downward rotation and reciprocating mechanism. When the annular reinforcement rib in the container rises and touches the downward rotation and reciprocating mechanism, the downward rotation and reciprocating mechanism is driven to rotate upward. The upward rotation of the downward reciprocating mechanism drives the upward rotation and extension mechanism to drive the spray head to rotate downward to below the horizontal plane, and the downward rotation and extension mechanism The nozzle sprays and washes the inner wall of the tank, the upper surface of the annular reinforcement rib and the connection between the upper surface of the annular reinforcement rib and the inner wall of the tank; when the annular reinforcement rib in the tank is out of contact with the downward rotating reciprocating mechanism, the downward rotating reciprocating mechanism automatically rotates and resets, and the upward rotating extension mechanism automatically adjusts the angle of the nozzle to return to a state above the horizontal plane, and the upward nozzle sprays and washes the inner wall of the tank, the lower surface of the annular reinforcement rib and the connection between the lower surface of the annular reinforcement rib and the inner wall of the tank, so as to reciprocate and wash the cleaning dead corners caused by the annular reinforcement rib and the dead corners of the inner wall of the top of the tank body, thereby avoiding the accumulation of foam and other residues in the tank body in the dead corners inside the tank body, that is, the inside of the tank is washed without dead corners, reducing the possibility of corrosion and scaling inside the tank, thereby extending the service life of the tank and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall three-dimensional structure of a foam fire truck tank maintenance device provided by an embodiment of the present invention; Figure 2The three-dimensional structure of the interior of the maintenance box in the embodiment of the present invention is shown in FIG. Figure 1 ; Figure 3 The three-dimensional structure of the interior of the maintenance box in the embodiment of the present invention is shown in FIG. Figure 2 ; Figure 4 It is a schematic diagram of the three-dimensional structure of the combination of the local lifting part and the local driving mechanism in an embodiment of the present invention; Figure 5 The embodiment of the present invention provides Figure 4 Schematic diagram of the three-dimensional structure at A in the middle; Figure 6 It is a schematic diagram of the three-dimensional structure of the combination of the first transmission shaft and the second transmission shaft in an embodiment of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the adjustment part in the embodiment of the present invention; Figure 8 The embodiment of the present invention provides Figure 7 Schematic diagram of the three-dimensional structure at B in the middle; Fig. 9 It is a schematic diagram of the three-dimensional structure of the combination of the upward rotation extension mechanism and the downward rotation reciprocating mechanism in the embodiment of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the combination of the reciprocating driven shaft and the reciprocating driving shaft in the embodiment of the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the combination of the arc-shaped avoidance groove and the limit stopper in the embodiment of the present invention; Description of reference numerals: In the figure: 1. maintenance box; 2. nozzle; 3. notch; 4. drive motor; 5. first mounting plate; 6. first transmission shaft; 7. lifting plate; 8. second mounting plate; 9. second transmission shaft; 10. anti-skid pad; 11. mounting ring; 12. pawl; 13. ratchet; 14. first support; 15. driving bevel gear; 16. driven bevel gear; 17. transmission shaft; 18. driving screw; 19. connecting plate; 20. driving mounting frame; 21. driving cylinder; 22. driving column; 23. extension mounting frame; 24. extension support plate; 25. connecting support rod; 26. adjustment slot; 27. driving block; 28. angle Adjust the drive plate; 29, angle adjustment shaft; 30, fixed support rod; 31, movable support rod; 32, fixed shaft; 33, reciprocating drive rod; 34, transition mounting rod; 35, reciprocating transmission rod; 36, second reset support connecting rod; 37, first mounting seat; 38, second mounting seat; 39, transition drive rod; 40, third mounting seat; 41, first reset support connecting rod; 42, arc-shaped rack plate; 43, reciprocating driving gear; 44, reciprocating driven shaft; 45, reciprocating driving shaft; 46, water tank; 47, arc-shaped avoidance groove; 48, limit block; 49, water pump; 50, transition water storage frame; 51, liquid inlet pipe. DETAILED DESCRIPTION

[0018] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0019] like Figures 1 to 11 As shown, an embodiment of the present invention provides a maintenance device for a foam fire truck tank, the maintenance device comprising a maintenance box 1, a water supply part arranged in the maintenance box 1 and a plurality of nozzles 2, the maintenance device also comprising: An adjustment part, disposed in the middle of the curing box 1, for controlling the angle and position of the nozzle 2; and The lifting part is arranged inside the curing box 1 and is used to synchronously control the lifting of the container and the rotation of the adjusting part; Wherein, the adjustment unit comprises: The upward rotation and extension mechanism is used to adjust the initial angle and position of the nozzle 2; A driving mechanism, which is disposed on the lifting portion and is located directly above the upward rotation and extension mechanism, and is used to provide power for initial angle adjustment of the nozzle 2 and for the deployment of the upward rotation and extension mechanism; and The downward rotating reciprocating mechanism is arranged on the upward rotating extension mechanism and is used to adjust the working angle of the nozzle 2 in real time; The nozzle 2 is arranged on the upward rotating extension mechanism, the water supply part and the nozzle 2 are connected to each other through the liquid inlet pipe 51, and the nozzle 2 is located above the downward rotating reciprocating mechanism; When the upward rotating and extending mechanism is in the expanded state, the annular reinforcing ribs in the container are located on the vertical moving track of the downward rotating reciprocating mechanism.

[0020] Specifically, the curing box 1 is provided with a notch 3 for accommodating the container.

[0021] During the actual application of this embodiment, when tank maintenance is required, the staff places the tank in the middle of the lifting part in the maintenance box 1, and the lifting part is started to slowly lift the tank while driving the adjusting part to rotate rapidly. After the upward rotation and extension mechanism and the downward rotation and reciprocating mechanism of the adjusting part enter the tank, the driving mechanism of the water supply part and the adjusting part is started, driving the upward rotation and extension mechanism to adjust the initial angle and position of the spray head 2 while driving the upward rotation and extension mechanism to expand. At this time, the spray head 2 rotates and rises above the horizontal plane, and the cleaning liquid in the spray head 2 sprays and cleans the inner wall of the top of the tank and the upper part of the inner side wall of the tank; when the upward rotation and extension mechanism is in the expanded state, the annular reinforcement rib in the tank is located on the vertical movement trajectory of the downward rotation and reciprocating mechanism. When the annular reinforcement rib in the tank rises and touches the downward rotation and reciprocating mechanism, the downward rotation and reciprocating mechanism is driven to rotate upward, and the downward rotation and reciprocating mechanism rotates upward to drive the upward rotation and extension mechanism. The mechanism drives the spray head 2 to rotate downward to below the horizontal plane, and the downward spray head 2 sprays and washes the inner wall of the tank, the upper surface of the annular reinforcement rib, and the connection between the upper surface of the annular reinforcement rib and the inner wall of the tank; when the annular reinforcement rib in the tank is out of contact with the downward rotating reciprocating mechanism, the downward rotating reciprocating mechanism automatically rotates and resets, and the upward rotating extension mechanism automatically adjusts the angle of the spray head 2 to return to a state above the horizontal plane, and the upward spray head 2 sprays and washes the inner wall of the tank, the lower surface of the annular reinforcement rib, and the connection between the lower surface of the annular reinforcement rib and the inner wall of the tank, so as to reciprocate and wash the cleaning dead corners caused by the annular reinforcement rib and the dead corners of the inner wall of the top of the tank body, thereby avoiding the accumulation of foam and other residues in the tank body in the dead corners inside the tank body, that is, the inside of the tank is washed without dead corners, reducing the possibility of corrosion and scaling inside the tank, thereby extending the service life of the tank and reducing maintenance costs.

[0022] As a preferred embodiment of the present invention, the lifting portion comprises: The driving motor 4 is detachably arranged at the middle of the top of the curing box 1, and is used to provide driving force for the lifting of the container and the rotation of the adjusting part; The first mounting plate 5 is provided in at least one group and is fixedly arranged on the inner wall of the curing box 1 and is located directly below the driving motor 4; The second mounting plate 8 is provided in at least one group and is fixedly arranged on the inner wall of the curing box 1 and is located directly below the first mounting plate 5; A first transmission shaft 6 is rotatably disposed on the first mounting plate 5 and is detachably connected to the output shaft of the driving motor 4 via a coupling; A second transmission shaft 9 is rotatably mounted on the second mounting plate 8, one end of which is transmission-connected to the end of the first transmission shaft 6 away from the output shaft of the driving motor 4 through a ratchet pawl pair, and the other end of which is fixedly provided with an adjustment portion; and A lifting plate 7 is arranged directly below the driving motor 4 and is used to provide a support surface for placing the container; The transmission mechanism is symmetrically arranged on both sides of the first mounting plate 5 and the second mounting plate 8 and is located between the driving motor 4 and the lifting plate 7 for power transmission between the driving motor 4 and the lifting plate 7 .

[0023] Specifically, a mounting ring 11 is fixedly provided at the end of the second transmission shaft 9, a ratchet 12 is provided on the inner wall of the mounting ring 11, and a ratchet 13 cooperating with the ratchet 12 is fixedly provided at the end of the first transmission shaft 6; When the driving motor 4 rotates forward, the lifting plate 7 is driven to rise slowly through the transmission mechanism, and the adjusting part is driven to rotate through the first transmission shaft 6, the cooperating pawl 12 and ratchet 13 and the second transmission shaft 9; when the driving motor 4 rotates reversely, the lifting plate 7 is driven to descend slowly through the transmission mechanism, and the adjusting part stops rotating.

[0024] Furthermore, in order to increase the stability of the container on the lifting plate 7 , an anti-slip pad 10 is fixedly provided on the lifting plate 7 .

[0025] During the actual application of this embodiment, when tank maintenance is required, the staff places the tank in the middle of the lifting plate 7, drives the motor 4 to rotate forward, and drives the lifting plate 7 to slowly rise through the transmission mechanism. At the same time, the driving motor 4 rotates to drive the first transmission shaft 6 to rotate, and under the action of the mutually coordinated pawl 12 and ratchet 13, the second transmission shaft 9 is driven to rotate, thereby driving the adjustment part to rotate; when the tank is flushed, the driving motor 4 is reversed, and the lifting plate 7 is driven to slowly descend through the transmission mechanism, and the adjustment part stops rotating.

[0026] As a preferred embodiment of the present invention, the transmission mechanism comprises: The first support 14 is provided in at least one group and is fixedly arranged on the top inner wall of the curing box 1; The driving screw 18 is rotatably arranged inside the curing box 1; The transmission shaft 17 is rotatably disposed on the first support 14 and is located between the driving screw 18 and the first transmission shaft 6; The driving bevel gear 15 is fixedly arranged on the first transmission shaft 6; The driven bevel gear 16 is fixedly disposed at the end of the transmission shaft 17 and meshes with the driving bevel gear 15; and The connecting plate 19 is disposed on the driving screw rod 18 and is threadably matched with the driving screw rod 18; Among them, the number of gears of the driving bevel gear 15 is less than the number of gears of the driven bevel gear 16, the connecting plate 19 is slidably set on the inner wall of the maintenance box 1, and the end of the transmission shaft 17 away from the first transmission shaft 6 is connected to the driving screw 18 through a bevel gear pair, and the lifting plate 7 is fixedly set on the connecting plate 19.

[0027] In actual application of this embodiment, the power of the driving motor 4 is transmitted to the transmission shaft 17 and the driving screw 18 respectively through the joint action of the bevel gear pair and the mutually meshing driving bevel gear 15 and the driven bevel gear 16. Since the connecting plate 19 and the driving screw 18 are threadedly matched, that is, during the rotation of the driving screw 18, the driving connecting plate 19 drives the lifting plate 7 to rise and fall, that is, drives the tank to be maintained to rise and fall. By setting the number of gears of the driving bevel gear 15 to be smaller than the number of gears of the driven bevel gear 16, the lifting plate 7 can be slowly raised while the adjusting part can be quickly rotated to ensure that the inner wall of the tank is fully flushed all around.

[0028] As a preferred embodiment of the present invention, the driving mechanism comprises: A drive mounting frame 20 is fixedly disposed at the bottom of the second transmission shaft 9; and The driving cylinder 21 is fixedly mounted on the top inner wall of the driving mounting frame 20; The upward rotation and extension mechanism is arranged on the driving installation frame 20 and is fixedly connected to the telescopic end of the driving cylinder 21 .

[0029] As a preferred embodiment of the present invention, the upward rotation and stretching mechanism comprises: The extension mounting frame 23 is provided in at least two groups and is arranged on both sides of the drive mounting frame 20; The driving column 22 is fixedly disposed at the telescopic end of the driving cylinder 21 and vertically slidably disposed in the driving mounting frame 20; The extension support plate 24 corresponds to the extension mounting frame 23 one by one, and is elastically slidably arranged in the drive mounting frame 20 with damping; The connecting support rod 25 is provided in at least one group, one end of which is fixedly provided on the outer wall of the extension mounting frame 23, and the other end of which penetrates the driving mounting frame 20 and is fixedly provided on the extension support plate 24; An adjustment slot 26 is provided on the extension support plate 24 at a side away from the connecting support rod 25; A driving block 27 is elastically slidably disposed in the adjusting slot 26, and a surface facing the driving column 22 is arranged as an inclined surface; and An angle adjustment unit is provided between the driving block 27 and the extension mounting frame 23; Among them, the extension mounting frame 23 is U-shaped, the connecting support rod 25 is slidably set on the side wall of the driving mounting frame 20, a gap is set between the extension support plate 24 and the inner wall of the adjacent driving mounting frame 20, the cross-section of the driving block 27 is trapezoidal, and the surface of the driving column 22 opposite to the inclined surface of the driving block 27 is an inclined surface setting that cooperates with the inclined surface of the driving block 27, the nozzle 2 is set on the angle adjustment unit, and the downward rotating reciprocating mechanism is set in the extension mounting frame 23, and the moving width of the driving block 27 is greater than the groove depth of the adjustment groove 26.

[0030] Specifically, at least one set of first springs for resetting is disposed between the driving block 27 and the inner wall of the adjusting groove 26 .

[0031] At least one set of second springs for resetting is arranged between the extension support plate 24 and the inner wall of the drive installation frame 20 .

[0032] In the actual application of this embodiment, after the installation frame 23 is extended and enters the container, the water supply part and the driving cylinder 21 are started, and the driving cylinder 21 drives the driving column 22 to move downward. Under the cooperation of the inclined surfaces of the driving column 22 and the driving block 27, the driving column 22 moves downward to squeeze the driving block 27 and move along the adjusting groove 26 to squeeze the first spring, thereby driving the angle adjustment unit to work and adjust the angle of the nozzle 2 to above the horizontal plane. In the process of the driving column 22 continuously moving downward, since the moving width of the driving block 27 is greater than the groove depth of the adjusting groove 26, When the driving block 27 moves to a point where there is no moving gap with the extension support plate 24, the driving column 22, when acting on the driving block 27, can synchronously drive the extension support plate 24 to squeeze the second spring to drive the extension support plate 24 to slide along the side wall of the driving installation frame 20 toward the adjacent extension installation frame 23, that is, drive the extension installation frame 23 to move away from the driving installation frame 20, thereby realizing the expansion of the extension installation frame 23, that is, the position of the nozzle 2 and the downward rotating reciprocating mechanism is adjusted, so that the annular reinforcement rib in the container is located on the vertical movement trajectory of the downward rotating reciprocating mechanism.

[0033] As a preferred embodiment of the present invention, the angle adjustment unit includes: An angle adjustment driving plate 28 passes through the extension mounting frame 23 and the driving mounting frame 20, one end of which is fixedly disposed on the driving block 27, and the other end of which is located in the extension mounting frame 23; An angle adjustment shaft 29 is rotatably mounted on the extension mounting frame 23; Fixed support rods 30, at least one set, fixedly arranged on the angle adjustment shaft 29; The movable support rod 31 corresponds to the fixed support rod 30 one by one, and is elastically rotatably arranged at the end of the fixed support rod 30 with damping; and The second resetting support unit is disposed between the movable support rod 31 and the inner wall of the extension installation frame 23 .

[0034] Among them, the angle adjustment shaft 29 and the angle adjustment driving plate 28 are connected through a gear rack pair, the angle adjustment driving plate 28 is slidably set on the extension mounting frame 23 and the driving mounting frame 20, and the nozzle 2 is set at the end of the movable support rod 31 away from the side of the fixed support rod 30.

[0035] Specifically, the movable support rod 31 and the fixed support rod 30 are elastically connected via a torsion spring.

[0036] During the actual application of this embodiment, when the driving column 22 moves downward, the extruding driving block 27 squeezes the first spring along the adjusting groove 26 to move, driving the angle adjustment driving plate 28 to move toward the extension mounting frame 23. Since the angle adjustment shaft 29 and the angle adjustment driving plate 28 are connected by a gear rack pair, the movement of the angle adjustment driving plate 28 drives the rotation of the angle adjustment shaft 29, thereby driving the fixed support rod 30 and the movable support rod 31 to swing upward, thereby adjusting the angle of the spray head 2 to above the horizontal plane, and the upward spray head 2 sprays and washes the inner wall of the tank, the lower surface of the annular reinforcement rib, and the connection between the lower surface of the annular reinforcement rib and the inner wall of the tank.

[0037] As a preferred embodiment of the present invention, the second reset support unit includes: A first mounting seat 37 is slidably disposed on the movable support rod 31; A second mounting seat 38 is elastically slidably disposed on the inner wall of the extension mounting frame 23; and The second reset support link 36 corresponds to the movable support rod 31 one by one, one end of which is rotatably disposed on the first mounting seat 37, and the other end of which is rotatably disposed on the second mounting seat 38; The initial position of the first mounting seat 37 is located at a limit position far away from the nozzle 2 .

[0038] Specifically, the second mounting seat 38 is elastically connected to the inner wall of the extension mounting frame 23 via a third spring.

[0039] In actual application of this embodiment, the second reset support link 36 provides support force for the fixed support rod 30 and the movable support rod 31. When the fixed support rod 30 and the movable support rod 31 swing upward, they drive the first mounting seat 37 to move toward the direction close to the nozzle 2.

[0040] As a preferred embodiment of the present invention, the downward rotating reciprocating mechanism comprises: The fixed shaft 32 is fixedly mounted on the extension mounting frame 23 and is located below the angle adjustment driving plate 28; A reciprocating driving rod 33 is rotatably disposed on the fixed shaft 32; A first reset support unit is disposed between the reciprocating drive rod 33 and the inner wall of the extension mounting frame 23; A transition mounting rod 34 is slidably disposed on the extension mounting frame 23; The reciprocating transmission rod 35 corresponds to the movable support rod 31 one by one and is fixedly arranged on the transition mounting rod 34; A transition driving rod 39, one end of which is rotatably disposed on the reciprocating transmission rod 35, and the other end of which is rotatably disposed on the movable support rod 31; and A reciprocating transmission unit, disposed between the reciprocating transmission rod 35 and the reciprocating drive rod 33, for power transmission; The reciprocating driving rod 33 and the movable supporting rod 31 are staggered. When the extension mounting frame 23 is in the extended state, the annular reinforcing rib in the container is located on the vertical moving track of the reciprocating driving rod 33 .

[0041] In actual application of this embodiment, when the extension mounting frame 23 is in the expanded state, the annular reinforcement rib in the container is located on the vertical movement track of the reciprocating drive rod 33. When the annular reinforcement rib in the container rises and touches the reciprocating drive rod 33, the reciprocating drive rod 33 is driven to rotate upward. The upward rotation of the reciprocating drive rod 33 drives the reciprocating transmission unit to drive the reciprocating transmission rod 35 to move downward. The reciprocating transmission rod 35 moves downward to drive the movable support rod 31 to swing downward. The movable support rod 31 swings downward to squeeze the torsion spring and pull the third spring to drive the nozzle 2 to rotate downward to below its horizontal plane. The downward-leaning nozzle 2 presses against the inner wall of the container, the upper surface of the annular reinforcement rib, and the connection between the upper surface of the annular reinforcement rib and the inner wall of the container. Spraying and flushing are performed; when the annular reinforcement rib in the container is out of contact with the reciprocating drive rod 33, there is no force transmission relationship between the reciprocating transmission rod 35 and the reciprocating drive rod 33. Under the action of the first reset support unit, the reciprocating drive rod 33 automatically rotates downward in the opposite direction to reset. Under the action of the rebound force of the torsion spring and the third spring, the movable support rod 31 is automatically adjusted to rotate upward in the opposite direction, that is, the angle of the spray head 2 is driven to restore to a state above the horizontal plane. The upward spray head 2 sprays and flushes the inner wall of the container, the lower surface of the annular reinforcement rib, and the connection between the lower surface of the annular reinforcement rib and the inner wall of the container, so as to repeatedly flush the cleaning dead corners caused by the annular reinforcement rib and the dead corners of the inner wall of the top of the tank body.

[0042] As a preferred embodiment of the present invention, the first resetting support unit comprises: A third mounting seat 40 is elastically slidably disposed on the inner wall of the extension mounting frame 23; and The first reset support link 41 corresponds to the reciprocating drive rod 33 , one end of which is rotatably disposed on the third mounting seat 40 , and the other end of which is rotatably disposed on the reciprocating drive rod 33 .

[0043] Specifically, the third mounting seat 40 is elastically connected to the inner wall of the extension mounting frame 23 via a fourth spring.

[0044] In actual application of this embodiment, the first reset support link 41 provides support force for the reciprocating drive rod 33. When the reciprocating drive rod 33 swings upward, the fourth spring is pulled by the first reset support link 41. When the annular reinforcement rib in the container is out of contact with the reciprocating drive rod 33, there is no force transmission relationship between the reciprocating transmission rod 35 and the reciprocating drive rod 33. Under the action of the rebound force of the fourth spring, the reciprocating drive rod 33 is automatically reversed and rotated downward to reset by pulling the first reset support link 41.

[0045] As a preferred embodiment of the present invention, the reciprocating transmission unit comprises: The arc-shaped rack plate 42 is fixedly disposed on the reciprocating drive rod 33; A reciprocating driven shaft 44 is rotatably mounted on the extension mounting frame 23; The reciprocating driving shaft 45 corresponds to the arc-shaped rack plate 42 and is rotatably disposed on the reciprocating driven shaft 44; The reciprocating driving gear 43 corresponds to the arc-shaped rack plate 42 and is fixedly disposed on the reciprocating driving shaft 45; An arc-shaped avoidance groove 47 is formed in the reciprocating driving shaft 45; and The limit stopper 48 is fixedly disposed on the reciprocating driven shaft 44 and is located in the arc-shaped avoidance groove 47; The transition mounting rod 34 is located below the arc-shaped rack plate 42, and the reciprocating driven shaft 44 is connected to the reciprocating transmission rod 35 via a gear rack pair. When the reciprocating transmission rod 35 moves upward, the limit stopper 48 rotates in the arc-shaped avoidance groove 47, and there is no relative action relationship between the limit stopper 48 and the reciprocating driving shaft 45; When the reciprocating transmission rod 35 moves downward, a relative action relationship exists between the limit stopper 48 and the reciprocating driving shaft 45 .

[0046] In the actual application of this embodiment, when the movable support rod 31 swings upward, that is, the reciprocating transmission rod 35 moves upward, the limit stopper 48 rotates in the arc-shaped avoidance groove 47, and there is no relative action relationship between the limit stopper 48 and the reciprocating driving shaft 45, that is, the gear rack pair between the reciprocating driven shaft 44 and the reciprocating transmission rod 35 is in an idling state, and there is no force transmission relationship between the reciprocating driven shaft 44 and the reciprocating driving shaft 45; when the annular reinforcement rib in the container rises and touches the reciprocating drive rod 33, the reciprocating drive rod 33 is driven to rotate upward, and the reciprocating drive rod 33 rotates upward to drive The arc-shaped rack plate 42 rotates, and the arc-shaped rack plate 42 drives the reciprocating driving gear 43 to rotate. When the reciprocating driving gear 43 rotates to have an interaction force with the limit stopper 48, the reciprocating driving gear 43 rotates to drive the reciprocating driven shaft 44 to rotate. Under the action of the gear rack pair between the reciprocating driven shaft 44 and the reciprocating transmission rod 35, the reciprocating transmission rod 35 is driven to rotate downward. The reciprocating transmission rod 35 moves downward to drive the movable support rod 31 to swing downward. The movable support rod 31 swings downward to squeeze the torsion spring and pull the third spring to drive the nozzle 2 to rotate downward to below its horizontal plane. The downward spray head 2 sprays and washes the inner wall of the container, the upper surface of the annular reinforcement rib, and the connection between the upper surface of the annular reinforcement rib and the inner wall of the container; when the annular reinforcement rib in the container is out of contact with the reciprocating drive rod 33, under the action of the rebound force of the fourth spring, the reciprocating drive rod 33 is automatically reversed and rotated downward to reset through the first reset support link 41, that is, the reciprocating driving gear 43 is driven to rotate in the opposite direction through the arc-shaped rack plate 42, and the relative action relationship between the reciprocating driving gear 43 and the limit stopper 48 is immediately released, and there is no force between the reciprocating driven shaft 44 and the reciprocating driving shaft 45. The transmission relationship is that under the action of the rebound force of the fourth spring, the reciprocating drive rod 33 is pulled by the first reset support link 41 to automatically rotate downward and reset in the opposite direction; under the action of the rebound force of the torsion spring and the third spring, the movable support rod 31 is automatically adjusted to rotate upward in the opposite direction, that is, the angle of the spray head 2 is driven to return to a state above the horizontal plane, and the upward spray head 2 sprays and rinses the inner wall of the tank, the lower surface of the annular reinforcement rib, and the connection between the lower surface of the annular reinforcement rib and the inner wall of the tank, so as to repeatedly rinse the cleaning dead corners caused by the annular reinforcement rib and the dead corners of the inner wall of the top of the tank body.

[0047] As a preferred embodiment of the present invention, the second transmission shaft 9 is hollow inside, and the water supply part includes: The water tank 46 is fixedly mounted on the second mounting plate 8; A water pump 49 is fixedly mounted on the second mounting plate 8; A transition water storage frame 50 is rotatably and sealingly disposed on the second transmission shaft 9 and is in communication with the second transmission shaft 9; Among them, the transition water storage frame 50 is fixedly set on the second mounting plate 8, and the water tank 46 and the water pump 49 as well as the water pump 49 and the transition water storage frame 50 are fixedly connected through an infusion pipe. One end of the liquid inlet pipe 51 is removably sealed and connected to the nozzle 2, and the other end is removably sealed and connected to the second transmission shaft 9. The connection between the liquid inlet pipe 51 and the second transmission shaft 9 is located on the second transmission shaft 9 between the second mounting plate 8 and the drive mounting frame 20.

[0048] During the actual application of this embodiment, when tank maintenance is required, the staff places the tank in the middle of the lifting plate 7 in the maintenance box 1. When the extended installation frame 23 enters the tank, the water pump 49 is started to transport the cleaning liquid from the water tank 46 to the transition water storage frame 50 through the infusion pipe, and then the cleaning liquid is sprayed outward from the nozzle 2 through the liquid inlet pipe 51 to rinse the inner wall of the tank; when the inside of the tank is cleaned, the drive motor 4 is reversed, the second transmission shaft 9 stops rotating, the drive cylinder 21 retracts to retract the extended installation frame 23, and the water pump 49 stops working.

[0049] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A maintenance device for a foam fire truck tank, the maintenance device comprising a maintenance box (1), a water supply unit and a plurality of nozzles (2); characterized in that: The maintenance equipment also includes: An adjustment portion, disposed in the middle of the curing box (1), for controlling the angle and position of the nozzle (2); and A lifting part, arranged inside the curing box (1), for synchronously controlling the lifting and lowering of the container and the rotation of the adjusting part; Wherein, the adjustment unit comprises: An upward rotation extension mechanism, used to adjust the initial angle and position of the nozzle (2); A driving mechanism, arranged on the lifting portion and located directly above the upward rotation and extension mechanism, for providing power for initial angle adjustment of the nozzle (2) and for deployment of the upward rotation and extension mechanism; and A downward rotating reciprocating mechanism, arranged on the upward rotating extension mechanism, for adjusting the working angle of the nozzle (2) in real time; Wherein, the nozzle (2) is arranged on the upward rotating extension mechanism, and the nozzle (2) is located above the downward rotating reciprocating mechanism; When the upward rotating and extending mechanism is in the expanded state, the annular reinforcing ribs in the container are located on the vertical moving track of the downward rotating reciprocating mechanism.

2. The foam fire truck tank maintenance equipment according to claim 1, characterized in that: The curing box (1) is provided with a notch (3) for accommodating the container.

3. The maintenance equipment for the foam fire truck tank according to claim 1, characterized in that: The lifting portion comprises: A driving motor (4) is detachably arranged at the middle of the top of the curing box (1) and is used to provide driving force for lifting the container and rotating the adjusting part; The first mounting plate (5) is provided in at least one group and is fixedly arranged on the inner wall of the curing box (1) and is located directly below the driving motor (4); The second mounting plate (8) is provided in at least one group and is fixedly arranged on the inner wall of the curing box (1) and is located directly below the first mounting plate (5); A first transmission shaft (6) is rotatably mounted on the first mounting plate (5) and is detachably connected to an output shaft of the drive motor (4) via a coupling; A second transmission shaft (9) is rotatably mounted on the second mounting plate (8), one end of which is transmission-connected to an end of the first transmission shaft (6) away from the output shaft of the drive motor (4) via a ratchet pawl pair, and the other end of which is fixedly provided with an adjustment portion; and A lifting plate (7) is arranged directly below the driving motor (4) and is used to provide a support surface for placing the container; The transmission mechanism is symmetrically arranged on both sides of the first mounting plate (5) and the second mounting plate (8), and is located between the drive motor (4) and the lifting plate (7), and is used for power transmission between the drive motor (4) and the lifting plate (7).

4. The maintenance equipment for the foam fire truck tank according to claim 3, characterized in that: The transmission mechanism comprises: The first support (14) is provided in at least one group and is fixedly arranged on the top inner wall of the curing box (1); A driving screw (18) is rotatably disposed inside the curing box (1); A transmission shaft (17) is rotatably mounted on the first support (14) and is located between the driving screw (18) and the first transmission shaft (6); A driving bevel gear (15) fixedly disposed on the first transmission shaft (6); A driven bevel gear (16) is fixedly disposed at the end of the transmission shaft (17) and meshes with the driving bevel gear (15); and A connecting plate (19) is disposed on the driving screw rod (18) and is threadably matched with the driving screw rod (18); The number of gears of the driving bevel gear (15) is smaller than the number of gears of the driven bevel gear (16); the connecting plate (19) is slidably arranged on the inner wall of the maintenance box (1); the end of the transmission shaft (17) away from the first transmission shaft (6) is connected to the driving screw (18) via a bevel gear pair; and the lifting plate (7) is fixedly arranged on the connecting plate (19).

5. The maintenance equipment for the foam fire truck tank according to claim 3, characterized in that: The driving mechanism comprises: A drive installation frame (20) is fixedly arranged at the bottom of the second transmission shaft (9); and A driving cylinder (21) is fixedly mounted on the top inner wall of the driving mounting frame (20); The upward rotation and extension mechanism is arranged on the drive installation frame (20) and is fixedly connected to the telescopic end of the drive cylinder (21).

6. The maintenance equipment for the foam fire truck tank according to claim 5, characterized in that: The upward rotation and stretching mechanism comprises: Extension mounting frames (23), at least two sets are provided, and are arranged on both sides of the drive mounting frame (20); A driving column (22) is fixedly arranged at the telescopic end of the driving cylinder (21) and vertically slidably arranged in the driving installation frame (20); An extension support plate (24) corresponding one to one with the extension mounting frame (23) and arranged in a horizontal elastic sliding manner with damping in the drive mounting frame (20); A connecting support rod (25), at least one set of which has one end fixedly mounted on the outer side wall of the extension mounting frame (23) and the other end passing through the drive mounting frame (20) and fixedly mounted on the extension support plate (24); An adjustment groove (26) is provided on the extension support plate (24) at a side away from the connecting support rod (25); A driving block (27) is elastically slidably disposed in the adjustment groove (26), and a surface facing the driving column (22) is arranged as an inclined surface; and An angle adjustment unit is arranged between the driving block (27) and the extension mounting frame (23); A gap is provided between the extension support plate (24) and the inner wall of the adjacent drive mounting frame (20); a surface of the drive column (22) opposite to the inclined surface of the drive block (27) is provided as an inclined surface that cooperates with the inclined surface of the drive block (27); the nozzle (2) is provided on the angle adjustment unit; the downward rotating reciprocating mechanism is provided in the extension mounting frame (23); and a moving width of the drive block (27) is greater than a groove depth of the adjustment groove (26).

7. The maintenance equipment for the foam fire truck tank according to claim 6, characterized in that: The angle adjustment unit comprises: An angle adjustment drive plate (28) passes through the extension mounting frame (23) and the drive mounting frame (20), one end of which is fixedly disposed on the drive block (27) and the other end of which is located in the extension mounting frame (23); An angle adjustment shaft (29) rotatably mounted on the extension mounting frame (23); Fixed support rods (30), at least one set, fixedly arranged on the angle adjustment shaft (29); A movable support rod (31) corresponding one to one with the fixed support rod (30), and elastically rotatably arranged at the end of the fixed support rod (30) with damping; and A second reset support unit is arranged between the movable support rod (31) and the inner wall of the extension installation frame (23); The angle adjustment shaft (29) and the angle adjustment drive plate (28) are connected via a gear rack pair, and the nozzle (2) is arranged at the end of the movable support rod (31) away from the fixed support rod (30).

8. The maintenance equipment for the foam fire truck tank according to claim 7, characterized in that: The downward rotating reciprocating mechanism comprises: A fixed shaft (32) fixedly mounted on the extension mounting frame (23) and located below the angle adjustment drive plate (28); A reciprocating drive rod (33) rotatably disposed on the fixed shaft (32); A first reset support unit is arranged between the reciprocating drive rod (33) and the inner wall of the extension mounting frame (23); A transition mounting rod (34) slidably disposed on the extension mounting frame (23); The reciprocating transmission rod (35) corresponds to the movable support rod (31) one by one and is fixedly arranged on the transition mounting rod (34); A transition drive rod (39), one end of which is rotatably disposed on the reciprocating transmission rod (35), and the other end of which is rotatably disposed on the movable support rod (31); and A reciprocating transmission unit, disposed between the reciprocating transmission rod (35) and the reciprocating drive rod (33); The reciprocating drive rod (33) and the movable support rod (31) are staggered. When the extension mounting frame (23) is in the extended state, the annular reinforcement rib in the container is located on the vertical movement track of the reciprocating drive rod (33).

9. The foam fire truck tank maintenance equipment according to claim 8, characterized in that: The reciprocating transmission unit comprises: An arc-shaped rack plate (42) fixedly disposed on the reciprocating drive rod (33); A reciprocating driven shaft (44) rotatably mounted on the extension mounting frame (23); A reciprocating driving shaft (45) corresponds to the arc-shaped rack plate (42) and is rotatably disposed on the reciprocating driven shaft (44); A reciprocating driving gear (43) corresponds to the arc-shaped rack plate (42) and is fixedly arranged on the reciprocating driving shaft (45); An arc-shaped avoidance groove (47) is formed in the reciprocating driving shaft (45); and A limit stopper (48) is fixedly disposed on the reciprocating driven shaft (44) and is located in the arc-shaped avoidance groove (47); The transition mounting rod (34) is located below the arc-shaped rack plate (42), and the reciprocating driven shaft (44) and the reciprocating transmission rod (35) are connected via a gear rack pair; When the reciprocating transmission rod (35) moves upward, the limit stopper (48) rotates in the arc-shaped avoidance groove (47), and there is no relative action relationship between the limit stopper (48) and the reciprocating driving shaft (45); When the reciprocating transmission rod (35) moves downward, a relative action relationship exists between the limit stopper (48) and the reciprocating driving shaft (45).

10. The foam fire truck tank maintenance equipment according to claim 5, characterized in that: The second transmission shaft (9) is hollow inside, and the water supply part comprises: A water tank (46) is fixedly mounted on the second mounting plate (8); A water pump (49) is fixedly mounted on the second mounting plate (8); A transition water storage frame (50) is sealingly rotatably disposed on the second transmission shaft (9) and is in communication with the second transmission shaft (9); The transition water storage frame (50) is fixedly arranged on the second mounting plate (8); the water tank (46) and the water pump (49) as well as the water pump (49) and the transition water storage frame (50) are fixedly connected via a liquid infusion pipe; one end of the liquid inlet pipe (51) is detachably sealed and connected to the nozzle (2); the other end is detachably sealed and connected to the second transmission shaft (9); and the connection between the liquid inlet pipe (51) and the second transmission shaft (9) is located on the second transmission shaft (9) between the second mounting plate (8) and the drive mounting frame (20).

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