A solid waste treatment method in water treatment projects

Abstract

The present invention discloses a method for treating solid waste in a water treatment project, which uses a solid waste treatment device in the water treatment project, including a collection box and a storage box located above the collection box for storing fixed waste. A working mechanism for conveying solid waste and simultaneously performing solid-liquid separation is provided between the collection box and the storage box. The specific method when using the above-mentioned solid waste treatment device in the water treatment project includes the following steps: S1, loading: pushing the solid waste in the storage box through a trapezoidal channel to between two extrusion plates through a linkage component; S2, conveying: the fixed waste between the two extrusion plates will be blocked by a push plate and an extension plate, and thus slide onto two crushing rollers through a mesh inclined guide plate; S3, separation: squeezing the fixed waste between the two extrusion plates to complete solid-liquid separation; S4, crushing: crushing the solid waste falling on the two crushing rollers by setting a crushing mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment, in particular to a method for treating solid waste in a water treatment project. Background Art

[0002] Water is the source of life, and water protection is an important aspect related to human development. Urban water bodies are important indicators related to the lives of urban residents and the city's image. In order to maintain the urban water resources environment, it is necessary to comprehensively, systematically and with a linkage mechanism to treat urban black and odorous water bodies.

[0003] There are often many solid wastes in water sources, such as plastic bags, plastic bottles, cigarette butts, polystyrene foam fast food boxes, fishing nets and glass bottles, among which plastic solid waste accounts for the largest proportion.

[0004] Before treating solid waste, the water remaining inside it needs to be treated to prevent the equipment from having low efficiency in treating solid waste. At the same time, mixed wastewater will affect the treatment effect of solid waste.

[0005] For example, the invention with authorization announcement number CN116037623B discloses a solid waste treatment device in a water treatment project. Although it achieves the effect of solid-liquid separation, the device requires different driving devices to drive the solid waste transportation and solid-liquid separation respectively, resulting in the overall solid waste treatment process of the device being not simple enough, affecting the work efficiency of solid waste treatment.

[0006] Therefore, we propose a solid waste treatment method in water treatment projects to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a method for treating solid waste in water treatment projects. By setting a working mechanism, the solid waste can be transported and squeezed at the same time, thereby achieving the effect of solid-liquid separation. This solves the problem that different driving devices are required to drive the solid waste transportation and solid-liquid separation work respectively, resulting in the overall solid waste treatment process of the device being not simple enough, affecting the working efficiency of solid waste treatment.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a method for treating solid waste in a water treatment project, which uses a solid waste treatment device in a water treatment project, including a collection box and a storage box located above the collection box for storing solid waste, wherein a working mechanism for transporting the solid waste and performing solid-liquid separation is provided between the collection box and the storage box. The specific method using the solid waste treatment device in a water treatment project includes the following steps:

[0009] S1. Loading: The bending plate is driven by the linkage assembly to move back and forth in the horizontal direction, pushing the solid waste in the storage box through the trapezoidal channel to between the two extrusion plates to complete the loading work of the device;

[0010] S2. Transport: When the extrusion plates move in the direction of arrow C, the solid waste between the two extrusion plates will be blocked by the push plate and the extension plate, so that the solid waste falls from the other end of the two extrusion plates and slides onto the two crushing rollers through the mesh inclined guide plate, completing the transport of the solid waste;

[0011] S3, separation: The two squeezing plates move toward the side of arrow B and also move in opposite directions, squeezing the solid waste between the two squeezing plates, thereby squeezing out the water in the solid waste, achieving the effect of solid-liquid separation;

[0012] S4. Crushing: A crushing mechanism is set up to crush the solid waste that falls on the two crushing rollers.

[0013] Preferably, the working mechanism includes a mesh cover plate integrally fixed on the upper surface of the collection box, and the upper surface of the mesh cover plate is provided with two symmetrically distributed quadrilateral slide grooves, and the quadrilateral slide grooves include inclined groove one, transverse groove one, inclined groove two and transverse groove two, and the upper surface of the mesh cover plate is provided with a mounting opening respectively connected to transverse groove one and transverse groove two, and a bevel stopper extending into the quadrilateral slide groove is provided in the mounting opening, and a spring one is fixedly connected between the bevel stopper and the inner wall of the mounting opening.

[0014] Preferably, the working mechanism also includes a support plate located above the mesh cover plate and driven by an external driving device, and two symmetrically distributed extrusion plates are provided on the support plate, and vertical poles are vertically fixed to the lower surface of the extrusion plate, and the lower ends of the two vertical poles are respectively slidably connected in two quadrilateral slide grooves, and the surface of the support plate is provided with strip grooves for the vertical poles to slide.

[0015] Preferably, a U-shaped plate with one end extending between the two extrusion plates is fixedly connected to the side wall of the collection box, and the free end of the U-shaped plate is fixedly connected to a push plate located between the two extrusion plates. Extension plates are telescopically inserted on the opposite sides of the push plate, and a spring 2 is fixedly connected between the two extension plates, and the two extension plates are respectively against the surfaces of the two extrusion plates.

[0016] Preferably, a trapezoidal channel interconnected with the interior of the storage box is fixed on one side of the surface of the storage box, and a pushing port is provided on the other side opposite to the trapezoidal channel. A bending plate extending through the pushing port into the storage box and a linkage assembly for driving the bending plate are provided on the outside of the storage box.

[0017] Preferably, the linkage assembly includes two inclined rods fixed on the side wall of the collection box and symmetrically distributed, two coaxially fixed gears 1 are rotatably connected between the two inclined rods, two racks 1 are symmetrically distributed and respectively meshed with the two gears 1 are fixedly connected to one side of the support plate, and two racks 2 are symmetrically distributed and respectively meshed with the two gears 1 are integrally fixedly connected to the bending plate.

[0018] Preferably, a partition is fixedly connected inside the collection box, and two sides of the partition are respectively a water storage space and a solid storage space, and one side of the mesh cover is fixedly connected to a mesh inclined guide plate.

[0019] Preferably, a crushing mechanism is provided in the solid storage space, and the crushing mechanism includes two crushing rollers rotatably connected to the inner wall of the solid storage space, and gear 2 which is coaxially fixed with the two crushing rollers and meshes with each other. An annular shaft is rotatably connected to the inner wall of the solid storage space, and a gear 3 is sleeved on the outer surface of one end of the annular shaft and a ratchet is fixed on the inner wall.

[0020] Preferably, an L-rod is fixedly connected to the surface of the support plate, one end of the L-rod is fixedly connected to a rack three which is meshed with a gear three, an annular sleeve is provided in the solid storage space and is coaxially fixed with one of the crushing rollers, a telescopic rod is vertically fixed to the surface of the annular sleeve, a ratchet which is meshed with a ratchet is fixedly connected to the upper end of the telescopic rod, and a spring three which is sleeved on the telescopic rod is fixedly connected between the ratchet and the annular sleeve.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. Through the linkage assembly, the bending plate is driven to move back and forth in the horizontal direction, pushing the solid waste in the storage box through the trapezoidal channel to between the two extrusion plates to complete the loading work of the device.

[0023] 2. By setting up a working mechanism, it is convenient to transport solid waste and squeeze the solid waste at the same time, so as to achieve the effect of solid-liquid separation.

[0024] 3. A crushing mechanism is provided to facilitate the crushing of solid waste that falls onto the two crushing rollers. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a flow chart of the method of the present invention;

[0026] Figure 2 Schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 3 Schematic diagram of the structure of the quadrilateral chute in the present invention;

[0028] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0029] Figure 5 Schematic diagram of the structure of the push plate in the present invention;

[0030] Figure 6 Schematic diagram of the cross-sectional structure of the push plate in the present invention;

[0031] Figure 7 Schematic diagram of the cross-sectional structure of the storage box of the present invention;

[0032] Figure 8 It is a schematic cross-sectional structural diagram of the collection box in the present invention;

[0033] Figure 9 For the present invention Figure 8 Schematic diagram of the enlarged structure at point D in the middle.

[0034] Figure: 1, collection box; 2, storage box; 21, trapezoidal channel; 22, push port; 23, bending plate; 3, working mechanism; 31, mesh cover; 32, quadrilateral slide; 321, inclined groove 1; 322, transverse groove 1; 323, inclined groove 2; 324, transverse groove 2; 33, mounting port; 34, inclined stopper; 35, spring 1; 36, support plate; 37, extrusion plate; 38, vertical rod; 39, strip groove; 310, U-shaped plate; 311, push plate ; 312. Extension plate; 313. Spring 2; 41. Inclined rod; 42. Gear 1; 43. Rack 1; 44. Rack 2; 5. Partition; 51. Water storage space; 52. Solid storage space; 6. Mesh inclined guide plate; 7. Crushing mechanism; 71. Crushing roller; 72. Gear 2; 73. Ring shaft; 74. Gear 3; 75. Ratchet; 76. L rod; 77. Rack 3; 78. Ring sleeve; 79. Telescopic rod; 710. Ratchet; 711. Spring 3. DETAILED DESCRIPTION

[0035] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention. Example 1:

[0036] See also Figures 1-6The present invention provides a technical solution: a method for treating solid waste in a water treatment project, which uses a solid waste treatment device in a water treatment project, including a collection box 1 and a storage box 2 located above the collection box 1 for storing solid waste. A working mechanism 3 for transporting solid waste and performing solid-liquid separation is provided between the collection box 1 and the storage box 2. The specific method of using the above-mentioned solid waste treatment device in a water treatment project includes the following steps:

[0037] S1. Loading: The bending plate 23 is driven by the linkage assembly to reciprocate in the horizontal direction, pushing the solid waste in the storage box 2 through the trapezoidal channel 21 to between the two squeezing plates 37, completing the loading work of the device;

[0038] S2. Conveying: When the squeezing plates 37 move in the direction of arrow C, the solid waste between the two squeezing plates 37 is blocked by the push plate 311 and the extension plate 312, causing the solid waste to fall from the other end of the two squeezing plates 37 and slide through the mesh inclined guide plate 6 onto the two crushing rollers 71, completing the conveying of the solid waste;

[0039] S3, separation: The two squeezing plates 37 move toward the arrow B and also move in opposite directions, squeezing the solid waste between the two squeezing plates 37, thereby squeezing out the water in the solid waste, achieving the effect of solid-liquid separation;

[0040] S4, crushing: a crushing mechanism 7 is provided to crush the solid waste falling onto the two crushing rollers 71;

[0041] The working mechanism 3 includes a mesh cover 31 with an integrated solid on the upper surface of the collecting box 1, and two symmetrically distributed quadrilateral slide grooves 32 are provided on the upper surface of the mesh cover 31. The quadrilateral slide grooves 32 include an inclined groove 1 321, a transverse groove 1 322, an inclined groove 2 323 and a transverse groove 2 324. The upper surface of the mesh cover 31 is provided with an installation opening 33 which is respectively interconnected with the transverse groove 1 322 and the transverse groove 2 324. An inclined stopper 34 extending into the quadrilateral slide groove 32 is provided in the installation opening 33, and a spring 1 35 is fixedly connected between the inclined stopper 34 and the inner wall of the installation opening 33.

[0042] The working mechanism 3 also includes a support plate 36 located above the mesh cover 31 and driven by an external driving device. Two symmetrically distributed extrusion plates 37 are provided on the support plate 36. Vertical rods 38 are vertically fixed to the lower surface of the extrusion plate 37, and the lower ends of the two vertical rods 38 are respectively slidably connected in two quadrilateral slide grooves 32. The surface of the support plate 36 is provided with a strip groove 39 for the vertical rods 38 to slide.

[0043] The external driving device is a cylinder.

[0044] In use, the cylinder is activated to drive the support plate 36 to reciprocate in the horizontal direction, and the support plate 36 can drive the extrusion plate 37 to reciprocate in the horizontal direction through the vertical rod 38;

[0045] In the initial state, the vertical rod 38 is located at the intersection of the inclined groove 1 321 and the transverse groove 1 322. When the support plate 36 and the extrusion plate 37 move in the direction indicated by arrow B, the vertical rod 38 will slide along the inclined groove 1 321 into the transverse groove 2 324. At this time, the two vertical rods 38 will move in opposite directions along the inclined groove 1 321. The vertical rod 38 can drive the extrusion plates 37 to move accordingly, so that the two extrusion plates 37 move in opposite directions while moving toward the side of arrow B, squeezing the solid waste between the two extrusion plates 37, thereby squeezing out water in the solid waste, achieving the effect of solid-liquid separation.

[0046] As the vertical rod 38 continuously moves along the second transverse groove 324 toward the side indicated by arrow B, it gradually encounters one of the inclined stoppers 34 and pushes the inclined surface of the inclined stopper 34 to move into the mounting opening 33, thereby allowing the vertical rod 38 to smoothly move into the second transverse groove 323. Then, the first spring 35 drives the inclined stopper 34 into the second transverse groove 324 again through its rebound force, preventing the vertical rod 38 from moving back into the second transverse groove 324.

[0047] Then, the support plate 36, the extrusion plate 37, and the vertical rods 38 move in the direction of arrow C, causing the two vertical rods 38 to slide along the second inclined groove 323 into the first transverse groove 322. As the two vertical rods 38 slide along the second inclined groove 323, they can drive the two extrusion plates 37 to move in opposite directions, increasing the distance between the two extrusion plates 37.

[0048] When the vertical rod 38 moves along the transverse groove 1 322 in the direction of arrow C, it will gradually hit another inclined block 34 and push the inclined block 34 to move into the installation opening 33, so that the vertical rod 38 can move smoothly into the inclined groove 1 321. Then, the spring 1 35 will drive the inclined block 34 to re-enter the transverse groove 2 324 through the rebound force, preventing the vertical rod 38 from moving back into the transverse groove 1 322.

[0049] A U-shaped plate 310 is fixedly connected to the side wall of the collection box 1, with one end extending between the two extrusion plates 37. The free end of the U-shaped plate 310 is fixedly connected to a push plate 311 located between the two extrusion plates 37. Extension plates 312 are telescopically inserted on the opposite sides of the push plate 311, and a spring 2 313 is fixedly connected between the two extension plates 312. The two extension plates 312 are respectively against the surfaces of the two extrusion plates 37.

[0050] During use, when the squeezing plates 37 move in the direction of arrow C, i.e., toward the side close to the push plate 311, the solid waste between the two squeezing plates 37 will be blocked by the push plate 311 and the extension plate 312, so that the solid waste falls from the other end of the two squeezing plates 37, completing the solid waste transportation work. Example 2:

[0051] See also Figure 1 and Figure 7 This embodiment further explains Example 1. A trapezoidal channel 21 that is interconnected with the interior of the storage box 2 is fixed on one side of the surface of the storage box 2, and a pushing port 22 is provided on the other side opposite to the trapezoidal channel 21. A bending plate 23 that extends into the storage box 2 through the pushing port 22 and a linkage component for driving the bending plate 23 is provided on the outside of the storage box 2.

[0052] The linkage assembly includes two inclined rods 41 fixed on the side wall of the collection box 1 and symmetrically distributed, and two coaxially fixed gears 42 are rotatably connected between the two inclined rods 41. Two racks 43 symmetrically distributed and respectively meshing with the two gears 42 are fixedly connected to one side of the support plate 36, and two racks 44 symmetrically distributed and respectively meshing with the two gears 42 are integrally fixedly connected to the bending plate 23.

[0053] During use, when the support plate 36 drives the two racks 43 fixed on one side thereof to move in the direction indicated by arrow C, the rack 1 43 can drive the gear 1 42 meshing with it to rotate accordingly, and the gear 1 42 can drive the bending plate 23 to move in the direction indicated by arrow B through the rack 2 44 meshing with it, thereby pushing the solid waste in the storage box 2 through the trapezoidal channel 21 to between the two extrusion plates 37, completing the loading work of the device.

[0054] When the support plate 36 drives the squeezing plate 37 to move toward the side of arrow C, the two squeezing plates 37 will also move in opposite directions to increase the distance between them, thereby facilitating the solid waste to fall between the two squeezing plates 37 .

[0055] A bent U-shaped rod is fixedly connected between the collection box 1 and the storage box 2 . Example 3:

[0056] See also Figure 8-Figure 9 This embodiment further explains Example 2. A partition 5 is fixedly connected to the collection box 1, and the two sides of the partition 5 are respectively a water storage space 51 and a solid storage space 52. A mesh inclined guide plate 6 is fixedly connected to one side of the mesh cover 31.

[0057] The water squeezed out by the two squeezing plates 37 will flow into the water storage space 51 through the support plate 36, the mesh cover plate 31 and the mesh inclined guide plate 6, so that the solid waste falling from one side of the support plate 36 will slide through the mesh inclined guide plate 6 to the two crushing rollers 71, and after being crushed by the crushing rollers 71, it will be collected in the partition 5.

[0058] A crushing mechanism 7 is provided in the solid storage space 52, and the crushing mechanism 7 includes two crushing rollers 71 rotatably connected to the inner wall of the solid storage space 52, and a gear 2 72 coaxially fixed with the two crushing rollers 71 and meshing with each other. An annular shaft 73 is rotatably connected to the inner wall of the solid storage space 52, and a gear 3 74 is sleeved on the outer surface of one end of the annular shaft 73, and a ratchet 75 is fixed on the inner wall. An L rod 76 is fixedly connected to the surface of the support plate 36, and one end of the L rod 76 is fixedly connected to a rack 3 77 meshing with the gear 3 74. An annular sleeve 78 coaxially fixed with one of the crushing rollers 71 is provided in the solid storage space 52, and a telescopic rod 79 is vertically fixed on the surface of the annular sleeve 78. A ratchet 710 meshing with the ratchet 75 is fixedly connected to the upper end of the telescopic rod 79, and a spring 3 711 sleeved on the telescopic rod 79 is fixedly connected between the ratchet 710 and the annular sleeve 78.

[0059] During use, the support plate 36 can drive the rack 3 77 to move back and forth in the horizontal direction through the L-rod 76, and the rack 3 77 can drive the gear 3 74 meshing with it to rotate back and forth, and the gear 3 74 can drive the ratchet 75 coaxially fixed thereto to rotate back and forth, and the ratchet 75 can drive the annular sleeve 78 and the crushing roller 71 coaxially fixed thereto to rotate in one direction through the ratchet teeth 710 and the telescopic rod 79;

[0060] A second gear 72 fixed coaxially therewith is provided on the outer side of each of the two crushing rollers 71, and the two second gears 72 are meshed with each other, so that the two crushing rollers 71 can rotate in opposite directions to crush the solid waste.

[0061] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A method for treating solid waste in a water treatment project, using a solid waste treatment device in a water treatment project, comprising a collection box (1) and a storage box (2) located above the collection box (1) for storing solid waste, characterized in that: A working mechanism (3) for transporting solid waste and performing solid-liquid separation is provided between the collecting box (1) and the storage box (2); The working mechanism (3) comprises a mesh cover (31) integrally fixed to the upper surface of the collection box (1), and the upper surface of the mesh cover (31) is provided with two symmetrically distributed quadrilateral chutes (32); The working mechanism (3) further comprises a support plate (36) located above the mesh cover plate (31) and driven by an external driving device, wherein two symmetrically distributed extrusion plates (37) are provided on the support plate (36), a vertical rod (38) is vertically fixed to the lower surface of the extrusion plate (37), and the lower ends of the two vertical rods (38) are respectively slidably connected in two quadrilateral slide grooves (32), and a strip groove (39) for the vertical rods (38) to slide is opened on the surface of the support plate (36); a U-shaped plate (310) having one end extending between the two extrusion plates (37) is fixedly connected to the side wall of the collection box (1), and the free end of the U-shaped plate (310) is fixedly connected to the two vertical rods (38). A push plate (311) is provided between two extrusion plates (37), and extension plates (312) are retractably connected on opposite sides of the push plate (311), and a spring (313) is fixedly connected between the two extension plates (312), and the two extension plates (312) are respectively pressed against the surfaces of the two extrusion plates (37); a trapezoidal channel (21) is fixed on one side of the surface of the storage box (2) and is interconnected with the interior thereof, and a push port (22) is provided on the other side opposite to the trapezoidal channel (21), and a bending plate (23) is provided on the outside of the storage box (2) and extends into the storage box (2) through the push port (22), and a linkage assembly for driving the bending plate (23); The specific method for using the solid waste treatment device in the above-mentioned water treatment project includes the following steps: S1. Loading: The bending plate (23) is driven to move back and forth in the horizontal direction by the linkage assembly, and the solid waste in the storage box (2) is pushed between the two extrusion plates (37) through the trapezoidal channel (21), thereby completing the loading work of the device; S2. Conveying: When the squeezing plates (37) move in the direction of arrow C, the solid waste between the two squeezing plates (37) is blocked by the push plate (311) and the extension plate (312), so that the solid waste falls from the other end of the two squeezing plates (37) and slides onto the two crushing rollers (71) through the mesh inclined guide plate (6), completing the conveying of the solid waste; S3, separation: The two squeezing plates (37) move toward the arrow B and also move in opposite directions, squeezing the solid waste between the two squeezing plates (37), thereby squeezing out the water in the solid waste, achieving the effect of solid-liquid separation; S4. Crushing: A crushing mechanism is provided to crush the solid waste that falls onto the two crushing rollers (71).

2. The method for treating solid waste in a water treatment project according to claim 1, wherein: The quadrilateral slide groove (32) includes an inclined groove 1 (321), a transverse groove 1 (322), an inclined groove 2 (323) and a transverse groove 2 (324); the upper surface of the mesh cover plate (31) is provided with a mounting opening (33) which is respectively connected to the transverse groove 1 (322) and the transverse groove 2 (324); the mounting opening (33) is provided with an inclined stopper (34) extending into the quadrilateral slide groove (32); a spring 1 (35) is fixedly connected between the inclined stopper (34) and the inner wall of the mounting opening (33).

3. The method for treating solid waste in a water treatment project according to claim 2, wherein: The linkage assembly comprises two inclined rods (41) fixed on the side wall of the collection box (1) and symmetrically distributed, two coaxially fixed gears (42) are rotatably connected between the two inclined rods (41), one side of the support plate (36) is fixedly connected to two symmetrically distributed racks (43) that are respectively meshed with the two gears (42), and the bending plate (23) is integrally fixedly connected to two symmetrically distributed racks (44) that are respectively meshed with the two gears (42); a partition (5) is fixedly connected in the collection box (1), and the two sides of the partition (5) are respectively a water storage space (51) and a solid storage space (52); a mesh inclined guide plate (6) is fixedly connected to one side of the mesh cover plate (31); a crushing mechanism is provided in the solid storage space (52), and the crushing mechanism comprises two crushing rollers (71) rotatably connected to the inner wall of the solid storage space (52), and a gear (72) that is coaxially fixed with the two crushing rollers (71) and meshed with each other.

4. The method for treating solid waste in a water treatment project according to claim 3, wherein: An annular shaft (73) is rotatably connected to the inner wall of the solid storage space (52), a gear three (74) is sleeved on the outer surface of one end of the annular shaft (73), and a ratchet (75) is fixed to the inner wall.

5. The method for treating solid waste in a water treatment project according to claim 4, characterized in that: An L-rod (76) is fixedly connected to the surface of the support plate (36), and one end of the L-rod (76) is fixedly connected to a rack three (77) that meshes with the gear three (74).

6. The method for treating solid waste in a water treatment project according to claim 5, characterized in that: An annular sleeve (78) is provided in the solid storage space (52) and is coaxially fixed to one of the crushing rollers (71).

7. The method for treating solid waste in a water treatment project according to claim 6, characterized in that: A telescopic rod (79) is vertically fixed to the surface of the annular sleeve (78), and a ratchet (710) that meshes with the ratchet wheel (75) is fixedly connected to the upper end of the telescopic rod (79).

8. The method for treating solid waste in a water treatment project according to claim 7, characterized in that: A spring three (711) sleeved on the telescopic rod (79) is fixedly connected between the ratchet (710) and the annular sleeve (78).

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