Integrated water purification equipment

By introducing fixed components, installation components, water spray components and adjustment components into the water purification equipment, the problem of time-consuming and laborious installation of the filter mesh and unadjustable position of the spray head in traditional water purification equipment is solved, and convenient disassembly and uniform filtration is achieved, improving the filtration effect and equipment practicality.

CN223280656UActive Publication Date: 2025-08-29FOSHAN SANZHENGYUAN TECH CO LTD
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Patent Information

Application Number
CN202422957985.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-02
Publication Date
2025-08-29
Estimated Expiration
2034-12-02

AI Technical Summary

Technical Problem

Traditional water purification equipment is time-consuming and labor-intensive in the fixing and installation process of the filter mesh, the bolts are prone to rust and affect disassembly, and the inability to adjust the position of the spray head leads to uneven filtration effect, which may cause the filter mesh to deform.

Method used

Fixing components, installation components, water spray components and adjustment components are adopted to drive the mixing rod to mix the liquid through the motor, and the water spray component adjusts the position of the spray head. The fixing components are conveniently removed from the filter screen, and the installation components are easy to close the cover and fix.

Benefits of technology

The disassembly and assembly efficiency and filtering effect of the filter mesh are improved, the deformation of the filter mesh is avoided, and the practicality and working efficiency of the device are improved.

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Abstract

The utility model relates to the technical field of water purification equipment, and discloses integrated water purification equipment which comprises a water storage tank and further comprises a filter screen arranged in the water storage tank, and a plurality of [-shaped plates are fixedly connected to the upper surface of the filter screen. Through the arrangement of the fixing assembly, a worker can conveniently disassemble and assemble the filter screen, tools such as bolts are not needed, the disassembly and assembly efficiency of the filter screen is effectively improved, and the workload of the worker is relieved; according to the water purification device, a closing cover and a water storage tank can be conveniently closed and fixed by a worker, water can be effectively sprayed to a filter screen for purification treatment through the arranged water spraying assembly, and the horizontal position of a water spraying head can be effectively adjusted and moved through the arranged adjusting assembly; therefore, the contact between the water and the filter screen is more uniform and comprehensive, and the filtering effect and efficiency of the filter screen are effectively improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of water purification equipment, and specifically, to an integrated water purification equipment. Background Technique

[0002] Water purification equipment refers to the equipment for producing purified water, and the purified water is widely used in: domestic drinking, chemical industry, medical treatment, breeding, planting, food, beverage, etc. Water purification equipment is also the main working process of water plants and is an indispensable step in the treatment of water resources. When purifying water resources, an integrated water purification equipment is required.

[0003] When the traditional water purification equipment fixes and installs the filter screen, it generally uses bolts and special tools. Although this method can effectively fix and install the filter screen, the installation process is time-consuming and laborious, which not only reduces the installation efficiency of the filter screen but also increases the workload of the staff. Moreover, after the bolts are used for a long time, they will rust due to moisture, which will affect the disassembly of the filter screen. In addition, the traditional water purification equipment cannot effectively adjust and move the position of the spray head, which will cause the spray head to only be able to effectively spray water onto one part of the filter screen, and it is impossible to make the water contact the filter screen evenly and comprehensively. This not only reduces the filtering effect of the filter screen but may also cause deformation of the filter screen, thus affecting the normal use effect of the filter screen.

[0004] Therefore, those skilled in the art have provided an integrated water purification equipment to solve the problems raised in the above background technique. Content of the Utility Model

[0005] The purpose of the utility model is to provide an integrated water purification equipment, including a water storage tank, and further including:

[0006] A filter screen, arranged inside the water storage tank, the upper surface of the filter screen is fixedly connected with a plurality of U-shaped plates, both sides of the outer wall of the water storage tank are symmetrically provided with fixed frames, and the upper surfaces of the plurality of fixed frames are all provided with guide grooves for the U-shaped plates to move, and the bottom of the water storage tank is connected to a drain pipe through a solenoid valve;

[0007] Fixing components, symmetrically arranged on both sides of the outer wall of the water storage tank;

[0008] A closing cover, located above the water storage tank, the front surface and the rear surface of the closing cover are both fixedly connected with insertion plates, the front surface and the rear surface of the water storage tank are both fixedly connected with installation frames, and the upper surfaces of the two installation frames are both provided with guide grooves for the insertion plates to move;

[0009] The installation component is arranged outside the installation frame;

[0010] The water spraying component is arranged on the upper surface of the closing cover;

[0011] The adjusting component is arranged on the upper surface of the closing cover.

[0012] As a further improvement of this technical solution, the fixing component includes connecting rods symmetrically arranged on both sides of the outer wall of the water storage tank. The other ends of multiple connecting rods are fixedly connected with limiting discs. A moving plate is slidably connected to the outside of each two connecting rods. A reset spring is sleeved on the outside of multiple connecting rods. Multiple reset springs are abutted between the moving plate and the limiting disc. Handles are symmetrically arranged on the outside of the moving plate. Plug rods are symmetrically arranged on the relative sides of two moving plates. A guiding groove for the plug rod to move is opened in the interior of the fixing frame. A guiding groove for the plug rod to move is opened in the interior of the U-shaped plate.

[0013] As a further improvement of this technical solution, a bellows protective cover is sleeved on the outside of multiple connecting rods. The two ends of multiple bellows protective covers are fixedly connected with the relative sides of the moving plate and the limiting disc respectively.

[0014] As a further improvement of this technical solution, the installation component includes a fixing plate fixedly connected to the outside of the installation frame. A sliding rod is fixedly connected to the interior of the fixing plate. A resisting plate is arranged in the interior of the fixing plate. A guiding groove for the sliding rod to move is opened in the interior of the resisting plate. A resisting spring is sleeved on the outside of the sliding rod. The resisting spring is abutted between the resisting plate and the fixing plate. Side plates are symmetrically arranged on the outside of the resisting plate. Pulling plates are fixedly connected to the outside of each two side plates. Installation rods are symmetrically arranged on the relative sides of two resisting plates. Guiding grooves for the installation rods to move are opened on the contact surfaces between the fixing plate and the installation frame. A guiding groove for the installation rod to move is opened in the interior of the insertion plate.

[0015] As a further improvement of this technical solution, the water spraying component includes an adjusting plate fixedly connected to the upper surface of the closing cover. A water pump is fixedly connected to the upper surface of the adjusting plate. A mixing cylinder is fixedly connected to the upper surface of the closing cover through a support frame. A first motor is fixedly connected to the upper surface of the mixing cylinder. The output shaft of the first motor is fixedly connected with a rotating rod through a coupling. Stirring rods are equidistantly arranged on the outside of the rotating rod. A connecting frame is arranged below the closing cover. A connecting pipe is fixedly connected to the interior of the connecting frame. Water spraying heads are equidistantly communicated with the bottom of the connecting pipe. The water inlet end of the water pump is communicated with the bottom of the mixing cylinder through a water inlet pipe. A water filtering membrane is arranged in the interior of the water inlet pipe. The water outlet end of the water pump is communicated with the interior of the connecting pipe through a water outlet pipe.

[0016] As a further improvement of the technical solution, the adjusting component includes a second motor fixedly connected to the outside of the adjusting plate. The output shaft of the second motor is fixedly connected with a threaded rod through a coupling. The other end of the threaded rod is rotatably connected to the inner side wall of the adjusting plate. A threaded block is threadedly connected to the outside of the threaded rod. Guide grooves for the threaded block to move are provided on the contact surfaces of the adjusting plate and the closing cover. The bottom of the threaded block is fixedly connected to the upper surface of the connecting frame.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] In this integrated water purification device, through the fixed component, installation component, water spraying component and adjusting component provided, when water needs to be purified, only need to add water and liquid medicine into the mixing cylinder first. At this time, the first motor starts to operate, driving the stirring rod to rotate synchronously, so that the water and the liquid medicine can be mixed through the stirring rod. After the water and the liquid medicine are mixed, the water spraying component starts to operate. At this time, the water spraying component will spray the water inside the mixing cylinder into the storage tank. When the water enters the storage tank, the filter screen can effectively filter and purify the water. While the spraying component is operating, the adjusting component will also start to operate synchronously. At this time, the adjusting component can effectively adjust and move the position of the water spraying head, so that the water can fully and evenly contact with the filter screen, thereby effectively improving the filtering effect and efficiency of the filter screen on the water, and can also avoid the probability of deformation of the filter screen to a certain extent. When the filter screen needs to be disassembled, replaced or cleaned, only through the fixed component, the U-shaped plate can be conveniently disassembled from the fixed frame, so as to facilitate the staff to disassemble the filter screen, without the staff using tools such as bolts, effectively improving the disassembly and assembly efficiency of the filter screen. Through the setting of the installation component, it is convenient for the staff to close and fix the closing cover and the storage tank, effectively improving the overall practicability of the device, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall three-dimensional structure diagram of the present utility model;

[0020] Figure 2 is the exploded three-dimensional structure diagram of the present utility model;

[0021] Figure 3 is the bottom three-dimensional structure diagram of the present utility model;

[0022] Figure 4 is the sectional three-dimensional structure diagram of the mixing cylinder and the adjusting plate in the present utility model;

[0023] Figure 5 is Figure 2Schematic diagram of the enlarged structure of area A in

[0024] Figure 6 is Figure 2 Schematic diagram of the enlarged structure of area B in

[0025] The meanings of each label in the figure are as follows:

[0026] 1. Water storage tank; 2. Closing cover; 3. Insertion plate; 4. Installation frame; 5. Fixed plate; 6. Adjusting plate; 7. Support frame; 8. Mixing cylinder; 9. Filter screen; 10. C-shaped plate; 11. Connection frame; 12. Connecting pipe; 13. Spraying head; 14. Solenoid valve; 15. Drain pipe; 16. First motor; 17. Rotating rod; 18. Stirring rod; 19. Water inlet pipe; 20. Water outlet pipe; 21. Water pump; 22. Second motor; 23. Threaded rod; 24. Threaded block; 25. Slide bar; 26. Contact plate; 27. Contact spring; 28. Side plate; 29. Installation rod; 30. Connecting rod; 31. Limiting disc; 32. Moving plate; 33. Reset spring; 34. Bellows protective cover; 35. Fixed frame; 36. Insertion rod. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figure 1 - Figure 6 as shown, this embodiment provides an integrated water purification device, including a water storage tank 1, and further including:

[0029] A filter screen 9 is arranged inside the water storage tank 1. The upper surface of the filter screen 9 is fixedly connected with a plurality of C-shaped plates 10. On both sides of the outer wall of the water storage tank 1, fixed frames 35 are symmetrically arranged. The upper surfaces of the plurality of fixed frames 35 are all provided with guide grooves for the C-shaped plates 10 to move. The bottom of the water storage tank 1 is connected to a drain pipe 15 through a solenoid valve 14;

[0030] A fixing component is symmetrically arranged on both sides of the outer wall of the water storage tank 1;

[0031] A closing cover 2 is located above the water storage tank 1. The front surface and the rear surface of the closing cover 2 are both fixedly connected with insertion plates 3. The front surface and the rear surface of the water storage tank 1 are both fixedly connected with installation frames 4. The upper surfaces of the two installation frames 4 are both provided with guide grooves for the insertion plates 3 to move;

[0032] An installation component is arranged outside the installation frame 4;

[0033] A water spraying component, arranged on the upper surface of the closing cover 2;

[0034] An adjusting component, arranged on the upper surface of the closing cover 2.

[0035] The above working principle: When water purification treatment is required, only need to add water and liquid medicine into the interior of the mixing cylinder 8 first. At this time, the first motor 16 starts to operate, driving the stirring rod 18 to rotate synchronously, so that the water and the liquid medicine can be mixed through the stirring rod 18. After the water and the liquid medicine are mixed, the water spraying component starts to operate. At this time, the water spraying component will spray the water inside the mixing cylinder 8 into the interior of the water storage tank 1. When the water enters the interior of the water storage tank 1, the filter screen 9 can effectively filter and purify the water. While the spraying component is operating, the adjusting component will also start to operate synchronously. At this time, the adjusting component can effectively adjust and move the position of the water spraying head 13, so that the water can fully and evenly contact with the filter screen 9, thereby effectively improving the filtering effect and efficiency of the filter screen 9 on the water, and can avoid the probability of deformation of the filter screen 9 to a certain extent. When the filter screen 9 needs to be disassembled, replaced or cleaned, only need to pass the fixing component to conveniently disassemble the U-shaped plate 10 and the fixing frame 35, so as to facilitate the staff to disassemble the filter screen 9, without the staff using tools such as bolts, effectively improving the disassembly and assembly efficiency of the filter screen 9. Through the setting of the installation component, it is convenient for the staff to close and fix the closing cover 2 and the water storage tank 1, effectively improving the overall practicability of the device, saving time and effort.

[0036] In order to fix and install the filter net 9 conveniently and effectively, the fixing component includes connecting rods 30 symmetrically arranged on both sides of the outer wall of the water storage tank 1. The other ends of the multiple connecting rods 30 are fixedly connected with limiting disks 31. A moving plate 32 is slidably connected to the outside of each two connecting rods 30. A return spring 33 is sleeved on the outside of the multiple connecting rods 30. The multiple return springs 33 are all abutted between the moving plate 32 and the limiting disk 31. Handles are symmetrically arranged on the outside of the moving plate 32. Plug rods 36 are symmetrically arranged on the relative side of the two moving plates 32. A guiding groove for the plug rod 36 to move is opened in the fixing frame 35, and a guiding groove for the plug rod 36 to move is opened in the C-shaped plate 10. When it is necessary to fix and install the filter net 9, just pull the handle first. At this time, the handle will带动 the moving plate 32 to move synchronously on the outside of the connecting rod 30. During the movement of the moving plate 32, the return spring 33 will be compressed. The moving plate 32 will also带动 the plug rod 36 to move synchronously. At this time, insert the C-shaped plate 10 into the fixing frame 35, and then release the handle. At this time, the return spring 33 resets,带动 the moving plate 32 to move synchronously, and the moving plate 32 then带动 the plug rod 36 to move synchronously. When the plug rod 36 is inserted into the guiding groove inside the C-shaped plate 10, the C-shaped plate 10 and the fixing frame 35 can be fixed. At this time, the filter net 9 can be fixed and installed, and at the same time, it is convenient for the staff to disassemble, replace and clean the filter net 9, without the staff using tools such as bolts, effectively improving the disassembly and assembly efficiency of the filter net 9 and reducing the work burden of the staff.

[0037] Considering that when the return spring 33 is exposed to the external environment for a long time, it may rust and other situations, so a bellows protective cover 34 is sleeved on the outside of the multiple connecting rods 30. The two ends of the multiple bellows protective covers 34 are respectively fixedly connected with the relative sides of the moving plate 32 and the limiting disk 31. Through the setting of the bellows protective cover 34, the return spring 33 can be effectively protected from dust and water, so as to effectively extend the service life of the return spring 33 and will not cause any impact on the normal use effect of the return spring 33.

[0038] In order to facilitate the staff to close and fix the closing cover 2 and the water tank 1, the installation component includes a fixing plate 5 fixedly connected to the outside of the installation frame 4, the interior of the fixing plate 5 is fixedly connected to the sliding rod 25, the interior of the fixing plate 5 is provided with a contact plate 26, the interior of the contact plate 26 is provided with a guide groove for the movement of the sliding rod 25, the external sleeve of the sliding rod 25 is provided with a contact spring 27, the contact spring 27 is in contact between the contact plate 26 and the fixing plate 5, the external side plates 28 are symmetrically provided with side plates 28, the external sides of each two side plates 28 are fixedly connected with a pull plate, the opposite sides of the two contact plates 26 are symmetrically provided with mounting rods 29, the contact surfaces of the fixing plate 5 and the installation frame 4 are provided with guide grooves for the movement of the mounting rod 29, and the internal of the plug plate 3 is provided with a guide groove for the movement of the mounting rod 29 When the mounting rod 29 is inserted into the guide groove inside the plug plate 3, the plug plate 3 can be fixed to the mounting frame 4, and the closing cover 2 and the water tank 1 can be closed and fixed.

[0039] In order to effectively spray water into the interior of the water storage tank 1 for filtering and purification, the water spraying assembly includes an adjusting plate 6 fixedly connected to the upper surface of the closing cover 2, the upper surface of the adjusting plate 6 is fixedly connected to a water pump 21, the upper surface of the closing cover 2 is fixedly connected to a mixing drum 8 through a support frame 7, the upper surface of the mixing drum 8 is fixedly connected to a first motor 16, the output shaft of the first motor 16 is fixedly connected to a rotating rod 17 through a coupling, and stirring rods 18 are evenly spaced outside the rotating rod 17. A connecting frame 11 is provided below the closing cover 2, the interior of the connecting frame 11 is fixedly connected to a connecting pipe 12, and the bottom of the connecting pipe 12 is evenly spaced and connected to a water spray head 13, the water inlet end of the water pump 21 is connected to the bottom of the mixing drum 8 through a water inlet pipe 19, and a water filter membrane is provided inside the water inlet pipe 19. The water outlet end of the water pump 21 is connected to the interior of the connecting pipe 12 through an outlet pipe 20. When purifying water, it is only necessary to add both water and liquid medicine into the mixing drum 8 first. At this time, the first motor 16 starts to run, and the first motor 16 will drive the rotating rod 17 to rotate synchronously, and the rotating rod 17 will drive the stirring rod 18 to rotate synchronously. At this time, the stirring rod 18 can be used to mix the water and the liquid medicine. When the mixing of the water and the liquid medicine is completed, the water pump 21 starts to run. At this time, the water pump 21 will transfer the water inside the mixing drum 8 through the water inlet pipe 19 to the inside of the water outlet pipe 20, and then to the inside of the connecting pipe 12, and then spray it out through the water nozzle 13. At this time, the water can be sprayed onto the upper surface of the filter screen 9, so that the filter screen 9 can effectively filter and purify the water. Through the setting of the water filter membrane, the impurities in the water can be effectively preliminarily filtered and intercepted, thereby effectively improving the water purification effect and efficiency.

[0040] In addition, in order to effectively adjust the horizontal position of the sprinkler head 13, the adjustment component includes a second motor 22 fixedly connected to the outside of the adjustment plate 6, the output shaft of the second motor 22 is fixedly connected to a threaded rod 23 through a coupling, the other end of the threaded rod 23 is rotatably connected to the inner side wall of the adjustment plate 6, the external thread of the threaded rod 23 is connected to a threaded block 24, the contact surface of the adjustment plate 6 and the closing cover 2 are provided with a guide groove for the movement of the threaded block 24, the bottom of the threaded block 24 is fixedly connected to the upper surface of the connecting frame 11, and when the horizontal position of the sprinkler head 13 needs to be adjusted and moved During the dynamic processing, the second motor 22 starts to run. At this time, the second motor 22 will drive the threaded rod 23 to rotate synchronously, and the threaded block 24 will move synchronously on the outside of the threaded rod 23, driving the connecting frame 11 to move synchronously. The connecting frame 11 then drives the water head 13 to move synchronously. At this time, the horizontal position of the water head 13 can be adjusted and moved, so that the contact between water and the filter screen 9 can be more uniform and comprehensive, thereby effectively improving the filtering effect of the filter screen 9, and to a certain extent avoiding the deformation of the filter screen 9 caused by the impact force of the water being too large.

[0041] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated water purification device, comprising a water storage tank (1), characterized in that: It further includes: A filter screen (9), which is arranged inside the water storage tank (1). A plurality of U-shaped plates (10) are fixedly connected to the upper surface of the filter screen (9). Fixed frames (35) are symmetrically arranged on both sides of the outer wall of the water storage tank (1). Guide grooves for the U-shaped plates (10) to move are formed on the upper surfaces of the plurality of fixed frames (35). The bottom of the water storage tank (1) is connected to a drain pipe (15) through a solenoid valve (14); Fixing components, which are symmetrically arranged on both sides of the outer wall of the water storage tank (1); A closing cover (2), which is located above the water storage tank (1). Plug plates (3) are fixedly connected to the front surface and the rear surface of the closing cover (2). Mounting frames (4) are fixedly connected to the front surface and the rear surface of the water storage tank (1). Guide grooves for the plug plates (3) to move are formed on the upper surfaces of the two mounting frames (4); Mounting components, which are arranged outside the mounting frames (4); Spraying components, which are arranged on the upper surface of the closing cover (2); Adjusting components, which are arranged on the upper surface of the closing cover (2).

2. The integrated water purification device according to claim 1, characterized in that: The fixing components include connecting rods (30) symmetrically arranged on both sides of the outer wall of the water storage tank (1). Limiting disks (31) are fixedly connected to the other ends of the plurality of connecting rods (30). Moving plates (32) are slidably connected to the outside of every two connecting rods (30). Return springs (33) are sleeved on the outside of the plurality of connecting rods (30). The plurality of return springs (33) are all abutted between the moving plates (32) and the limiting disks (31). Handles are symmetrically arranged on the outside of the moving plates (32). Plug rods (36) are symmetrically arranged on the relative sides of the two moving plates (32). Guide grooves for the plug rods (36) to move are formed inside the fixed frames (35). Guide grooves for the plug rods (36) to move are formed inside the U-shaped plates (10).

3. The integrated water purification device according to claim 2, characterized in that: Bellows protective covers (34) are sleeved on the outside of the plurality of connecting rods (30). Two ends of the plurality of bellows protective covers (34) are respectively fixedly connected to the relative sides of the moving plates (32) and the limiting disks (31).

4. The integrated water purification device according to claim 1, characterized in that: The mounting components include fixing plates (5) fixedly connected to the outside of the mounting frames (4). Slide rods (25) are fixedly connected to the inside of the fixing plates (5). Abutting plates (26) are arranged inside the fixing plates (5). Guide grooves for the slide rods (25) to move are formed inside the abutting plates (26). Compression springs (27) are sleeved on the outside of the slide rods (25). The compression springs (27) are abutted between the abutting plates (26) and the fixing plates (5). Side plates (28) are symmetrically arranged on the outside of the abutting plates (26). Pulling plates are fixedly connected to the outside of every two side plates (28). Mounting rods (29) are symmetrically arranged on the relative sides of the two abutting plates (26). Guide grooves for the mounting rods (29) to move are formed on the contact surfaces between the fixing plates (5) and the mounting frames (4). Guide grooves for the mounting rods (29) to move are formed inside the plug plates (3).

5. The integrated water purification device according to claim 1, characterized in that: The water spray assembly comprises an adjustment plate (6) fixedly connected to the upper surface of the closing cover (2), the upper surface of the adjustment plate (6) being fixedly connected to a water pump (21), the upper surface of the closing cover (2) being fixedly connected to a mixing drum (8) via a support frame (7), the upper surface of the mixing drum (8) being fixedly connected to a first motor (16), the output shaft of the first motor (16) being fixedly connected to a rotating rod (17) via a coupling, and the outer portion of the rotating rod (17) being provided with stirring rods ( 18), a connecting frame (11) is provided below the closing cover (2), a connecting pipe (12) is fixedly connected to the interior of the connecting frame (11), the bottom of the connecting pipe (12) is connected to the water spray heads (13) at equal intervals, the water inlet end of the water pump (21) is connected to the bottom of the mixing drum (8) through the water inlet pipe (19), a water filter membrane is provided inside the water inlet pipe (19), and the water outlet end of the water pump (21) is connected to the interior of the connecting pipe (12) through the water outlet pipe (20).

6. The integrated water purification device according to claim 5, characterized in that: The adjustment assembly comprises a second motor (22) fixedly connected to the outside of the adjustment plate (6); the output shaft of the second motor (22) is fixedly connected to a threaded rod (23) via a coupling; the other end of the threaded rod (23) is rotatably connected to the inner wall of the adjustment plate (6); the external thread of the threaded rod (23) is connected to a threaded block (24); the contact surfaces of the adjustment plate (6) and the closing cover (2) are both provided with guide grooves for the movement of the threaded block (24); the bottom of the threaded block (24) is fixedly connected to the upper surface of the connecting frame (11).