Automatic cleaning water tank with disinfection function
By adopting a combination design of lifting components and spray disinfection components in the automatic cleaning tank, the secondary contamination problem of water source caused by the drop of impurities on the cleaning brush is solved, and more efficient cleaning of the inner wall of the tank and safer water source storage are achieved.
Patent Information
- Application Number
- CN202421362524.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-14
AI Technical Summary
During the cleaning process of existing automatic cleaning tanks, impurities adhered to the cleaning brush may fall into the water source, causing secondary contamination of the water source.
An automatic cleaning water tank with disinfection function was designed, and the lifting component and spraying disinfection component were combined. While the cleaning component was rotating and cleaning, the spraying disinfection component diverted the disinfection water to flush the inner wall of the water tank to prevent impurities from falling into the water source.
It effectively improves the cleaning quality and efficiency of the inner wall of the water tank, reduces cleaning dead corners, and prevents water source contamination caused by the drop of impurities on the cleaning brush.
Smart Images

Figure CN222679016U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water tank cleaning, in particular to an automatic cleaning water tank with a disinfection function. Background Art
[0002] Water tanks are a common vessel that can be used to store water in many fields such as fire protection and environmental protection. During the long-term storage of water in water tanks, a large amount of impurities such as scale, mud, algae, etc. will adhere to the inner wall of the water tank, which has an important impact on the use of the water tank. Therefore, automatic cleaning water tanks are needed to ensure regular cleaning of the inner wall of the water tank.
[0003] However, there are some defects or shortcomings in the existing automatic cleaning water tanks:
[0004] Existing automatic cleaning water tanks generally use a cleaning brush to scrape off impurities adhered to the inner wall of the water tank, and cooperate with the flushing of the nozzle to achieve the effect of cleaning the inner wall of the water tank. At this time, certain impurities will adhere to the cleaning brush. After the cleaning brush completes the cleaning of the inner wall of the water tank, the cleaning brush is generally placed on the top of the water tank. Then, when the water tank stores water, some impurities adhered to the cleaning brush may fall into the water source, causing secondary pollution to the water source. Utility Model Content
[0005] The purpose of the utility model is to provide an automatic cleaning water tank with a disinfection function to solve the above problems.
[0006] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides an automatic cleaning water tank with a disinfection function, comprising: a water tank body, a bracket arranged at the bottom of the water tank body, a cover body arranged at the top of the water tank body, a water inlet pipe and a water outlet pipe connected on the outer wall of the water tank body, a sewage pipe connected to the bottom of the water tank body, a lifting assembly arranged in the water tank body, a cleaning assembly installed on the lifting assembly, and a spray disinfection assembly fixed at the bottom of the cleaning assembly;
[0007] Valves are installed on the water inlet pipe, the water outlet pipe and the sewage pipe.
[0008] The lifting assembly is suitable for controlling the cleaning assembly and the spray disinfection assembly to move up and down in the water tank body;
[0009] The cleaning assembly is suitable for rotating and cleaning the inner wall of the water tank body;
[0010] The spray disinfection assembly is suitable for guiding external disinfection water to flush the inner wall of the water tank body.
[0011] Further, the cleaning assembly includes a control cover arranged in the water tank body, a control ring rotatably connected in the control cover, a support rod fixed at the bottom of the control ring, a first motor installed at the middle of the inner wall of the control cover, a plurality of control blocks hingedly connected to the bottom of the control ring in an annular array, cleaning brushes respectively arranged on the plurality of control blocks, a plurality of fixing components respectively arranged on the plurality of control blocks and the cleaning brush, and an adjusting component arranged on the support rod and the plurality of control blocks;
[0012] The output end of the first motor is fixedly connected to the top of the support rod, wherein
[0013] The fixing member is adapted to support a detachable fixed connection between the cleaning brush and the control block;
[0014] The adjusting component is suitable for controlling a plurality of control blocks to adjust angles.
[0015] Further, the spray disinfection assembly includes an annular spray pipe fixed at the bottom of the support rod, a plurality of nozzles on the annular spray pipe connected in an annular array, a delivery pipe connected to the annular spray pipe, a water pump installed on the support rod, one end of which is connected to the water inlet end of the water pump, and the other end of which passes through the cover body and is connected to an external disinfection water tank;
[0016] The water outlet end of the water pump is connected with the middle part of the delivery pipe through a pipeline.
[0017] Further, the adjustment component includes two control screws symmetrically connected to the control ring and the support rod, a pressure ring arranged in the control ring and threadedly connected to the two control screws, a plurality of pressure rods fixed to the pressure ring in an annular array, a plurality of adjustment rods hinged to the pressure rods at one end and hinged to the control block at the other end, a second motor fixed to the bottom of the support rod, two pulleys fixedly sleeved on the lower ends of the two control screws, and a control belt sleeved on the two pulleys;
[0018] The output end of the second motor is fixedly connected to the bottom of one of the control screws.
[0019] Furthermore, the fixing component includes a T-shaped mounting block fixed on the control block, a T-shaped slot provided on the cleaning brush, and two magnetic blocks respectively fixed on the T-shaped mounting block and in the T-shaped slot;
[0020] The T-shaped mounting block is snugly and slidably inserted into the T-shaped slot;
[0021] The two magnetic blocks are connected by magnetic attraction.
[0022] Further, the lifting assembly includes two lifting screws with one end rotatably connected to the bottom of the water tank body and the other end rotatably connected to the cover body, lifting blocks respectively screw-mounted on the two lifting screws, a third motor mounted on the upper surface of the cover body, symmetrically arranged above the cover body and fixedly sleeved on the upper ends of the two lifting screws, and a toothed belt meshingly sleeved on the two driving gears;
[0023] The output end of the third motor is fixedly connected to the upper end of one of the lifting screws;
[0024] The two lifting blocks are both fixed on the inner top of the control cover.
[0025] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:
[0026] 1. The automatic cleaning water tank with disinfection function can reciprocate to flush the water tank body while brushing the water tank body through the cleaning component and the spray disinfection component, thereby ensuring the cleaning quality of the water tank body, and cooperating with the lifting component to ensure the range of movement of the cleaning component and the spray disinfection component, thereby improving the cleaning efficiency and range of the water tank body and reducing the cleaning dead angle;
[0027] 2. The automatic cleaning water tank with disinfection function can control the angles of several cleaning brushes in the cleaning assembly through the adjusting components arranged in the cleaning assembly. When the several cleaning brushes are in a vertical state, the inside of the water tank body can be scrubbed, and when the several cleaning brushes are in a horizontal state, several nozzles in the spray disinfection assembly can spray disinfectant onto the cleaning brushes to rinse off impurities adhered to the cleaning brushes due to cleaning, thereby preventing impurities adhered to the cleaning brushes due to cleaning the water tank body from falling into the water source subsequently stored in the water tank body, thereby polluting the water source. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0029] Figure 1 Shows a stereogram of the utility model;
[0030] Figure 2 A partial cutaway view of the present invention is shown. Figure 1 ;
[0031] Figure 3 A partial stereogram of the utility model is shown;
[0032] Figure 4 A partial bottom-up stereogram of the present invention is shown;
[0033] Figure 5 A partial cutaway view of another state of the utility model is shown;
[0034] Figure 6 A partial cutaway view of the present invention is shown. Figure 2 .
[0035] In the figure
[0036] 1. Water tank body; 2. Bracket; 3. Cover; 4. Water inlet pipe; 5. Water outlet pipe; 6. Drain pipe; 7. Lifting assembly; 8. Cleaning assembly; 9. Spray disinfection assembly; 10. Valve; 11. Control cover; 12. Control ring; 13. Support rod; 14. First motor; 15. Control block; 16. Cleaning brush; 17. Fixed component; 18. Adjustment component; 19. Annular spray pipe; 20. Sprinkler; 21. Delivery pipe; 22. Water pump; 23. Hose; 24. Control screw; 25. Pressing ring; 26. Pressing rod; 27. Adjustment rod; 28. Second motor; 29. Pulley; 30. Control belt; 31. T-shaped mounting block; 32. T-shaped slot; 33. Magnetic block; 34. Lifting screw; 35. Lifting block; 36. Third motor; 37. Driving gear; 38. Toothed belt. DETAILED DESCRIPTION
[0037] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.
[0038] See also Figure 1 , Figure 1 Shows a three-dimensional diagram of the utility model; please refer to Figure 2 , Figure 2 A partial cutaway view of the present invention is shown. Figure 1 ; see Figure 3 , Figure 3 Shows a partial stereogram of the utility model; please refer to Figure 4 , Figure 4 A partial bottom-up stereogram of the present invention is shown; see Figure 5 , Figure 5 A partial cutaway view of another state of the present invention is shown; see Figure 6 , Figure 6 A partial cutaway view of the present invention is shown. Figure 2 ;like Figure 1-6As shown, an automatic cleaning water tank with a disinfection function comprises: a water tank body 1, a bracket 2 arranged at the bottom of the water tank body 1, a cover body 3 arranged at the top of the water tank body 1, a water inlet pipe 4 and a water outlet pipe 5 connected on the outer wall of the water tank body 1, a sewage pipe 6 connected at the bottom of the water tank body 1, a lifting component 7 arranged in the water tank body 1, a cleaning component 8 installed on the lifting component 7, and a spray disinfection component 9 fixed at the bottom of the cleaning component 8;
[0039] The water inlet pipe 4, the water outlet pipe 5 and the sewage pipe 6 are all equipped with valves 10.
[0040] The lifting component 7 is suitable for controlling the cleaning component 8 and the spray disinfection component 9 to move up and down in the water tank body 1;
[0041] The cleaning assembly 8 is suitable for rotating and cleaning the inner wall of the water tank body 1;
[0042] The spray disinfection component 9 is suitable for guiding external disinfection water to rinse the inner wall of the water tank body 1. When in use, first open the valve 10 on the water outlet pipe 5 to discharge the water in the water tank body 1, then close the valve 10 on the water outlet pipe 5, and then through the provided cleaning component 8, the inner wall of the water tank body 1 can be brushed and cleaned by reciprocating rotation. Under the action of the spray disinfection component 9, the disinfection water in the external disinfection water tank can be transported to the water tank body 1 to evenly rinse the inner wall of the water tank body 1. The coordinated use of the cleaning component 8 and the spray disinfection component 9 can ensure the cleaning effect of the water tank body 1, and the cleaning efficiency is high, time-saving and labor-saving, and the safety is high. The disinfectant sprayed by the spray disinfection component 9 can effectively disinfect the water tank body 1, improve the cleanliness of the water source stored in the water tank body 1, and the disinfectant adopts peroxide disinfectant. The decomposition products of the disinfectant are water and oxygen, without residue, and it is safe and reliable to use. At the same time, the sewage pipe 6 is located at the bottom of the water tank body 1. In order to ensure the discharge effect of the sewage in the water tank body 1 and prevent part of the sewage from remaining in the water tank body 1, when the cleaning component 8 and the spray disinfection component 9 simultaneously clean the inner wall of the water tank body 1, the lifting component 7 can drive the cleaning component 8 and the spray disinfection component 9 to move up and down in the water tank body 1, so as to ensure the cleaning range in the water tank body 1, and can clean different positions of the inner wall of the water tank body 1 to prevent the occurrence of cleaning dead corners. The adjusting component 18 provided in the cleaning component 8 can control the plurality of cleaning brushes 16 to rotate and keep vertical when the cleaning component 8 is performing the cleaning operation, and clean against the inner wall of the water tank. After the cleaning is completed, the plurality of cleaning brushes 16 can be controlled to rotate and keep horizontal, so that the plurality of nozzles 20 in the spray disinfection component 9 are at the same height as the cleaning brush 16, and then the plurality of cleaning brushes 16 are rinsed to prevent impurities adhered to the cleaning brushes 16 due to cleaning from falling into the water source stored in the water tank body 1 and polluting the water source.
[0043] Optionally, the cleaning assembly 8 includes a control cover 11 disposed in the water tank body 1, a control ring 12 rotatably connected to the control cover 11, a support rod 13 fixed to the bottom of the control ring 12, a first motor 14 installed in the middle of the inner wall of the control cover 11, a plurality of control blocks 15 hinged in an annular array at the bottom of the control ring 12, cleaning brushes 16 respectively disposed on the plurality of control blocks 15, a plurality of fixing components 17 respectively disposed on the plurality of control blocks 15 and the cleaning brush 16, and an adjusting component 18 disposed on the support rod 13 and the plurality of control blocks 15;
[0044] The output end of the first motor 14 is fixedly connected to the top of the support rod 13, wherein
[0045] The fixing member 17 is adapted to support a detachable fixed connection between the cleaning brush 16 and the control block 15;
[0046] The adjusting component 18 is suitable for controlling the several control blocks 15 to adjust the angle. When the water tank body 1 needs to be cleaned, the first motor 14 drives the support rod 13 to rotate, so that the control ring 12 reciprocates in the control cover 11, and under the control of the adjusting component 18, the several control blocks 15 can be controlled to rotate around the hinge with the control ring 12, so that the several cleaning brushes 16 on the several control blocks 15 are in contact with the inner wall of the water tank body 1 for brushing, and the fixed component 17 is convenient for the disassembly and assembly of the cleaning brush 16, which can ensure the cleaning effect of the cleaning brush 16 on the inner wall of the water tank body 1, and avoid the cleaning of the inner wall of the water tank body 1 by the cleaning brush 16 after long-term use and wear.
[0047] Optionally, the spray disinfection assembly 9 includes an annular spray pipe 19 fixed to the bottom of the support rod 13, a plurality of nozzles 20 connected to the annular spray pipe 19 in an annular array, a delivery pipe 21 connected to the annular spray pipe 19, a water pump 22 installed on the support rod 13, one end of which is connected to the water inlet end of the water pump 22, and the other end of which passes through the cover body 3 and is connected to an external disinfection water tank. A hose 23;
[0048] The water outlet end of the water pump 22 is connected to the middle part of the delivery pipe 21 through a pipeline. When the cleaning component 8 reciprocates to clean the inner wall of the water tank body 1, the annular spray pipe 19 can be driven to reciprocate synchronously. At the same time, the water pump 22 can deliver the disinfection water in the external disinfection water tank to the delivery pipe 21 and the annular spray pipe 19 through the hose 23, and spray it through a plurality of nozzles 20 to flush and disinfect the inner wall of the water tank body 1. During the reciprocating rotation of the annular spray pipe 19, the spraying and flushing range of the plurality of nozzles 20 can be guaranteed to avoid flushing dead corners, thereby improving the flushing and disinfection quality of the inner wall of the water tank body 1.
[0049] Optionally, the adjustment component 18 includes two control screws 24 symmetrically connected to the control ring 12 and the support rod 13, a pressure ring 25 arranged in the control ring 12 and threadedly connected to the two control screws 24, a plurality of pressure rods 26 fixed to the pressure ring 25 in an annular array, a plurality of adjustment rods 27 hinged to the pressure rods 26 at one end and hinged to the control block 15 at the other end, a second motor 28 fixed to the bottom of the support rod 13, two pulleys 29 respectively fixedly sleeved on the lower ends of the two control screws 24, and a control belt 30 sleeved on the two pulleys 29;
[0050] The output end of the second motor 28 is fixedly connected to the bottom of one of the control screws 24. When the cleaning assembly 8 cleans the inner wall of the water tank body 1, the second motor 28 is started to drive one of the control screws 24 to rotate, and under the cooperation of the control belt 30 and the two pulleys 29, the other control screw 24 is rotated synchronously. During the rotation of the two control screws 24, the pressure ring 25 can be moved downward, and then the plurality of pressure rods 26 can be moved downward at the same time, and the plurality of adjustment rods 27 are squeezed respectively to push the plurality of control blocks 15 to rotate, so that the plurality of cleaning brushes 16 remain in a vertical state and are all against the inner wall of the water tank body 1, so that the plurality of cleaning brushes 16 can be convenient for the water tank body 1 to clean the water. The inner wall of the tank body 1 is brushed and cleaned, and after the cleaning component 8 and the spray disinfection component 9 complete the cleaning and disinfection of the inner wall of the water tank body 1, the two control screws 24 rotate, and the control pressure ring 25 moves upward, thereby pulling a number of pressure rods 26 and adjusting rods 27 upward, so that the number of cleaning brushes 16 rotates, so that the bottom of the number of cleaning brushes 16 remains in a horizontal state. At this time, since some nozzles 20 in the spray disinfection component 9 will correspond to the number of cleaning brushes 16 and are at the same height, the cleaning liquid sprayed by some nozzles 20 can rinse the number of cleaning brushes 16, so that the dirt adhered to the number of cleaning brushes 16 can be washed off, thereby avoiding the dirt adhered to the cleaning brushes 16 from causing secondary pollution to the water source.
[0051] Optionally, the fixing component 17 includes a T-shaped mounting block 31 fixed on the control block 15, a T-shaped slot 32 provided on the cleaning brush 16, and two magnetic blocks 33 respectively fixed on the T-shaped mounting block 31 and in the T-shaped slot 32;
[0052] The T-shaped mounting block 31 is inserted and slidably fitted into the T-shaped slot 32;
[0053] The two magnetic blocks 33 are magnetically connected. When the cleaning brush 16 is worn and damaged after being used for a period of time, the cover body 3 can be lifted upward to expose the cleaning assembly 8 to the external environment. At this time, the cleaning brush 16 that needs to be replaced can be pushed so that the T-shaped mounting block 31 on the cleaning brush 16 is in the T-shaped slot 32, thereby disengaging the cleaning brush 16 from the control block 15. At this time, a new cleaning brush 16 can be replaced so that the T-shaped mounting block 31 on it is inserted into the T-shaped slot 32, and the cleaning brush 16 can be replaced. The replacement of the cleaning brush 16 as a whole is simple and convenient, and it is convenient for the staff to operate. The two magnetic blocks 33 can improve the stability of the T-shaped mounting block 31 in the T-shaped slot 32, thereby preventing the cleaning brush 16 from accidentally disengaging when the cleaning assembly 8 is in use.
[0054] Optionally, the lifting assembly 7 includes two lifting screws 34 with one end rotatably connected to the bottom of the water tank body 1 and the other end rotatably connected to the cover body 3, lifting blocks 35 respectively screwed on the two lifting screws 34, a third motor 36 installed on the upper surface of the cover body 3, two driving gears 37 symmetrically arranged above the cover body 3 and fixedly sleeved on the upper ends of the two lifting screws 34, and a toothed belt 38 meshingly sleeved on the two driving gears 37;
[0055] The output end of the third motor 36 is fixedly connected to the top of one of the lifting screws 34;
[0056] The two lifting blocks 35 are fixed on the inner top of the control cover 11. When the cleaning component 8 and the spray disinfection component 9 clean and disinfect the inside of the water tank body 1, the third motor 36 is started, driving one of the lifting screws 34 to rotate, and making one of the driving gears 37 rotate synchronously, and then under the action of the toothed belt 38, the other driving gear 37 is meshed and transmitted, so that the two lifting screws 34 rotate synchronously, and the two lifting blocks 35 are controlled to drive the control cover 11 to complete the rising and falling operations, so that the cleaning component 8 and the spray disinfection component 9 can move up and down in the water tank body 1, thereby ensuring the cleaning area of the cleaning component 8 and the spray disinfection component 9, and improving the cleaning effect of the inside of the water tank body 1; and when the cleaning component 8 reciprocates to scrub the inner wall of the water tank body 1, the reciprocating rotation range of the cleaning component 8 is limited, and it will not touch the two lifting screws 34, thereby ensuring the normal operation of the lifting component 7 and the cleaning component 8.
[0057] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. An automatic cleaning water tank with disinfection function, characterized in that: include: A water tank body (1), a bracket (2) arranged at the bottom of the water tank body (1), a cover body (3) arranged at the top of the water tank body (1), a water inlet pipe (4) and a water outlet pipe (5) connected to the outer wall of the water tank body (1), a sewage pipe (6) connected to the bottom of the water tank body (1), a lifting component (7) arranged in the water tank body (1), a cleaning component (8) installed on the lifting component (7), and a spray disinfection component (9) fixed to the bottom of the cleaning component (8); The water inlet pipe (4), the water outlet pipe (5) and the sewage discharge pipe (6) are all equipped with valves (10), wherein The lifting component (7) is suitable for controlling the cleaning component (8) and the spray disinfection component (9) to move up and down in the water tank body (1); The cleaning component (8) is suitable for rotating and cleaning the inner wall of the water tank body (1); The spray disinfection assembly (9) is suitable for directing external disinfection water to flush the inner wall of the water tank body (1).
2. An automatic cleaning water tank with disinfection function as claimed in claim 1, characterized in that: The cleaning assembly (8) comprises a control cover (11) arranged in the water tank body (1), a control ring (12) rotatably connected in the control cover (11), a support rod (13) fixed at the bottom of the control ring (12), a first motor (14) installed at the middle of the inner wall of the control cover (11), a plurality of control blocks (15) hingedly connected to the bottom of the control ring (12) in an annular array, cleaning brushes (16) respectively arranged on the plurality of control blocks (15), a plurality of fixing components (17) respectively arranged on the plurality of control blocks (15) and the cleaning brush (16), and an adjusting component (18) arranged on the support rod (13) and the plurality of control blocks (15); The output end of the first motor (14) is fixedly connected to the top of the support rod (13), wherein The fixing component (17) is suitable for supporting a detachable fixed connection between the cleaning brush (16) and the control block (15); The adjusting component (18) is suitable for controlling a plurality of control blocks (15) to adjust angles.
3. An automatic cleaning water tank with disinfection function as claimed in claim 2, characterized in that: The spray disinfection assembly (9) comprises an annular spray pipe (19) fixed to the bottom of the support rod (13), a plurality of spray heads (20) connected to the annular spray pipe (19) in an annular array, a delivery pipe (21) connected to the annular spray pipe (19), a water pump (22) installed on the support rod (13), a hose (23) having one end connected to the water inlet end of the water pump (22) and the other end passing through the cover body (3) and connected to an external disinfection water tank; The water outlet end of the water pump (22) is connected to the middle part of the delivery pipe (21) through a pipeline.
4. An automatic cleaning water tank with disinfection function as claimed in claim 3, characterized in that: The adjusting component (18) comprises two control screws (24) symmetrically connected to the control ring (12) and the support rod (13), a pressure ring (25) arranged in the control ring (12) and threadedly connected to the two control screws (24), a plurality of pressure rods (26) fixed on the pressure ring (25) in an annular array, a plurality of adjusting rods (27) one end of which is hinged to the pressure rod (26) and the other end of which is hinged to the control block (15), a second motor (28) fixed to the bottom of the support rod (13), two pulleys (29) respectively fixedly sleeved on the lower ends of the two control screws (24), and a control belt (30) sleeved on the two pulleys (29); The output end of the second motor (28) is fixedly connected to the bottom of one of the control screw rods (24).
5. The automatic cleaning water tank with disinfection function as claimed in claim 4, characterized in that: The fixing component (17) comprises a T-shaped mounting block (31) fixed on the control block (15), a T-shaped slot (32) provided on the cleaning brush (16), and two magnetic blocks (33) respectively fixed on the T-shaped mounting block (31) and in the T-shaped slot (32); The T-shaped mounting block (31) is snugly and slidably inserted into the T-shaped slot (32); The two magnetic blocks (33) are connected by magnetic attraction.
6. The automatic cleaning water tank with disinfection function as claimed in claim 2, characterized in that: The lifting assembly (7) comprises two lifting screws (34) with one end rotatably connected to the bottom of the water tank body (1) and the other end rotatably connected to the cover body (3), lifting blocks (35) respectively screw-mounted on the two lifting screws (34), a third motor (36) mounted on the upper surface of the cover body (3), two driving gears (37) symmetrically arranged above the cover body (3) and fixedly sleeved on the upper ends of the two lifting screws (34), and a toothed belt (38) meshingly sleeved on the two driving gears (37); The output end of the third motor (36) is fixedly connected to the top of one of the lifting screws (34); The two lifting blocks (35) are both fixed on the inner top of the control cover (11).