CN222445597U - Purification equipment for preparing latex products - Google Patents

Abstract

The utility model discloses a purification device for preparing latex products, which comprises a base, wherein arc plates are welded at two ends of the top of the base, bottom rings are welded at the tops of the arc plates, a purification tank is fixedly connected to the inner wall of the bottom rings, a top tank is arranged at the top of the purification tank, a sliding tube capable of sliding up and down is arranged in the top tank, a first screen ring is connected to the bottom end of the outer wall of the sliding tube in a threaded manner, impurities in the latex raw materials can be filtered and separated through arranging a coarse screen and a fine screen, when the sliding tube slides up and down on the inner wall of a sleeve, the latex raw materials in the first screen ring and the second screen ring can be gently turned up, the filtering effect on the impurities in the latex can be improved, after a dustproof ventilation cover is taken down, the latex raw materials can be directly poured into the purification device by workers, and the filtered latex raw materials can directly fall into a dialysis purification structure.

Description

Purification equipment for preparing latex product

Technical Field

The utility model relates to the technical field of latex product preparation, in particular to a purifying device for latex product preparation.

Background

The latex is a general term for colloidal emulsions formed by dispersing polymer particles in water, and generally, an aqueous dispersion of rubber particles is referred to as latex, and an aqueous dispersion of resin particles is referred to as emulsion, and can be directly used as a surface coating, a film, an adhesive, etc., and processed into raw rubber and latex products, which are widely used in daily life, and can be classified into natural latex, synthetic latex, and artificial latex.

The current dialysis apparatus need draw up the semipermeable membrane when using, wash away with the rivers, the process is comparatively loaded down with trivial details, based on these problems, chinese patent CN219424121U discloses a purification equipment of latex product preparation, this purification equipment of latex product preparation makes can support the device through the installation supporting leg, make can play skid-proof effect through the installation slipmat, make can observe the inside condition of jar through the installation observation window, make can observe the height of water injection through the installation intercommunication ware, make can carry out dialysis purification to the latex through the installation dialysis mechanism, make can carry dialysis subassembly up through the installation handle, make can carry out dialysis purification through the installation semipermeable membrane, make through installation drain pipe and valve can discharge waste water.

Before the device is purified to latex product, need leading the latex product in the semipermeable membrane, it is fixed with the connecting block again, be fixed with connecting block and connecting rod afterwards, the semipermeable membrane that will be equipped with the latex product stretches into the jar body that fills water at last, this process is extravagant staff's time and physical power, simultaneously in the inside in-process of latex product pouring into the semipermeable membrane, the dust in the air also can follow the latex product and get into the semipermeable membrane together, not only influence the quality after the latex product purifies, can also bring a lot of inconveniences for latex product purification work simultaneously.

Disclosure of utility model

This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model.

In order to solve the problems, the utility model adopts the following technical scheme.

The utility model provides a purification equipment of latex product preparation, the on-line screen storage device comprises a base, base top both ends all weld there is the arc, arc top welding has the bottom ring, bottom ring inner wall fixedly connected with purification jar, purification jar top installs the top jar, top jar internally mounted has the gliding slide tube from top to bottom, slide tube outer wall bottom threaded connection has first screen cloth ring, first screen cloth ring inner wall bottom fixedly connected with coarse screen cloth, first screen cloth ring bottom fixedly connected with links up the ring, link up ring outer wall bottom threaded connection has the second screen cloth ring, second screen cloth ring inner wall bottom fixedly connected with fine screen cloth, second screen cloth ring bottom fixedly connected with funnel, slide tube top welding has the push pipe, push pipe inner wall top has cup jointed dustproof ventilation cap, top jar top one end runs through perpendicularly has the inlet tube, purification jar bottom one end runs through perpendicularly has the outlet pipe, outlet pipe outer wall bottom threaded connection has the bottom, purification jar bottom center department runs through perpendicularly has the bottom plate, the stand top both ends all welds at the bottom plate top, stand top fixedly connected with screw outer loop, screw thread outer loop inner wall threaded connection has screw thread inner ring, pole setting top fixedly connected with pole setting, pole setting fixedly connected with top ring fixedly has the fine screen cloth, second screen cloth fixedly connected with funnel, second screen cloth ring bottom fixedly has top, second screen cloth fixedly connected with top, top film fixedly has the top through the top film has the top film of the top film, semipermeable film has the semipermeable film to pass through the top film, and the semipermeable film has the semipermeable film to pass through the semipermeable film, the semipermeable film has the semipermeable film, and the semipermeable film has the semipermeable film through the semipermeable film, and the semipermeable film.

As a further description of the above technical solution:

The purification tank outer wall top fixedly connected with top ring, top ring top both ends all weld have first screw thread to insert the axle, first screw thread inserts an outer wall bottom and peg graft there is the collar, first screw thread inserts an outer wall top equal threaded connection has first nut, collar inner wall and top tank outer wall bottom fixed connection.

As a further description of the above technical solution:

The top tank top center department runs through perpendicularly has the embedded ring, the lantern ring has been cup jointed to the embedded ring inner wall, the equal welding in embedded ring top both ends has the second screw thread to insert the axle, the second screw thread is inserted an outer wall bottom and is pegged graft there is the backing ring, backing ring inner wall and lantern ring outer wall top fixed connection, the equal threaded connection in second screw thread is inserted an outer wall top and is had the second nut, lantern ring inner wall bottom fixedly connected with sleeve pipe, sleeve pipe inner wall and slip pipe outer wall top sliding connection.

As a further description of the above technical solution:

the two ends of the top of the jacking pipe are fixedly connected with inserted bars, the outer wall of each inserted bar is inserted with a supporting ring, the inner wall of the supporting ring is fixedly connected with the top end of the outer wall of the dustproof ventilation cover.

As a further description of the above technical solution:

The sliding ring is vertically penetrated at the center of the bottom plate, the rubber outlet pipe is vertically penetrated in the semi-permeable membrane chassis, the outer wall of the rubber outlet pipe is sleeved with the inner wall of the sliding ring, the inner wall of the rubber outlet pipe is inserted with a plugging block, the bottom end of the outer wall of the rubber outlet pipe is connected with a threaded ring in a threaded manner, and the bottom of the plugging block and the bottom ring are fixedly connected with a rotary table.

As a further description of the above technical solution:

The purification tank inner wall is penetrated with a frame body, the inner wall of the frame body is inserted with a baffle, and long shaft bolts are connected with the center of the outer walls on two sides of the baffle and the center of the two sides of the inner wall of the frame body in a threaded manner.

As a further description of the above technical solution:

The top tank rear end fixedly connected with first mounting panel, first mounting panel top center department fixedly connected with cylinder, cylinder expansion end fixedly connected with second mounting panel, top pipe rear end fixedly connected with roof, the equal fixedly connected with third screw thread of roof bottom both ends inserts the axle, third screw thread inserts the axle outer wall and runs through second mounting panel both ends, the equal screwed connection of third screw thread insert axle extension end has the third nut.

Compared with the prior art, the utility model has the beneficial effects that:

(1) Through setting up coarse screen cloth and fine screen cloth, can filter and separate the impurity in the latex raw materials, when the slide tube slides from top to bottom at the sleeve pipe inner wall, the latex raw materials in first screen cloth ring and the second screen cloth ring can be gently subverted, be favorable to improving the filter effect to impurity in the latex, take off the back with dustproof ventilation cover, the staff can directly pour the latex raw materials into purification equipment, the latex raw materials that filters accomplished can directly fall into dialysis purification structure, this process has not only practiced thrift staff's time and physical power, be favorable to improving the quality after the latex product purification simultaneously.

(2) Through setting up arc semi-permeable membrane, semi-permeable membrane footwall and semi-permeable membrane chassis, can carry out dialysis purification to the latex, through setting up the connection structure between third screw insert axle and the third nut, can fix second mounting panel and roof together, when the cylinder is carrying second mounting panel and roof and reciprocate, push pipe on the roof can be carrying the slide tube and reciprocate together, through setting up between first screen ring and the slide tube, simple and easy connected mode between second screen ring and the linking ring, make the dismouting step of first screen ring and second screen ring more convenient and fast, simultaneously also be convenient for unify the processing to piled up impurity on coarse screen and the fine screen net, utilize the major axis bolt can be fixed the baffle in the framework, demolish the back with the baffle, can insert flexible pipe in the funnel, the length of shutoff piece is greater than the length of play shutoff piece, the shutoff piece can carry out the glue pipe to the play, when the shutoff piece is taken out, latex product after the purification just can follow out directly and flow.

Drawings

FIG. 1is a schematic diagram of the structure of the present utility model;

FIG. 2 is a second schematic diagram of the structure of the present utility model;

FIG. 3 is a front view of the present utility model;

FIG. 4 is a front cross-sectional view of the present utility model;

FIG. 5 is a rear view of the present utility model;

FIG. 6 is an enlarged view of a portion of the area A of FIG. 4 in accordance with the present utility model

FIG. 7 is an enlarged view of a portion of the area B of FIG. 4 in accordance with the present utility model

FIG. 8 is a three-dimensional view of the threaded inner ring, upright, load-bearing ring, arcuate semipermeable membrane, semipermeable membrane top plate, and telescoping tube connection structure of the present utility model.

The correspondence between the reference numerals and the component names in the drawings is as follows:

1. The device comprises a base, 2, an arc-shaped plate, 3, a bottom ring, 4, a purifying tank, 5, a top ring, 6, a first threaded inserting shaft, 7, a mounting ring, 8, a first nut, 9, a top tank, 10, an embedded ring, 11, a lantern ring, 12, a second threaded inserting shaft, 13, a backing ring, 14, a second nut, 15, a sleeve, 16, a sliding tube, 17, a first screen ring, 18, a coarse screen, 19, a connecting ring, 20, a second screen ring, 21, a fine screen, 22, a funnel, 23, a jacking pipe, 24, an inserting rod, 25, a supporting ring, 26, a dustproof ventilation cover, 27, a water inlet pipe, 28, a water outlet pipe, 29, a bottom cover, 30, a bottom plate, 31, a slip ring, 32, a column, 33, a threaded outer ring, 34, a threaded inner ring, 35, a vertical rod, 36, a bearing ring, 37, an arc-shaped semipermeable membrane, 38, a semipermeable membrane top disc, 39, a telescopic tube, 40, a water outlet pipe, 41, a sealing block, 42, a threaded ring, 43, a turntable, 44, a frame body, 45, a baffle, 46, a long shaft, a cylinder, a third mounting plate, a third threaded bolt, a 50, a top plate, a third mounting plate, a 50, a semi-permeable membrane.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. The present utility model provides the following examples.

Referring to fig. 1-8, the purifying device for preparing latex products comprises a base 1, wherein arc plates 2 are welded at two ends of the top of the base 1, bottom rings 3 are welded at the tops of the arc plates 2, purifying tanks 4 are fixedly connected to the inner walls of the bottom rings 3, the purifying tanks 4 can be supported by arranging the arc plates 2, top rings 5 are fixedly connected to the top ends of the outer walls of the purifying tanks 4, first threaded inserting shafts 6 are welded at two ends of the top rings 5, mounting rings 7 are inserted at the bottom ends of the outer walls of the first threaded inserting shafts 6, first nuts 8 are connected to the top ends of the outer walls of the first threaded inserting shafts 6 in a threaded mode, threads are formed at the top ends of the outer walls of the first threaded inserting shafts 6, the lengths of the first threaded inserting shafts 6 are larger than the height of the mounting rings 7, through holes penetrating up and down are formed at the two ends of the mounting rings 7, the outer walls of the first threaded inserting shafts 6 can be vertically inserted into and penetrate through the inner holes of the mounting rings 7, top tanks 9 are fixedly connected to the inner walls of the mounting rings 7, and the top tanks 9 can be fixed with the purifying tanks 4 by means of a connecting structure between the first threaded inserting shafts 6 and the first nuts 8.

The top center department of jar 9 has run through perpendicularly embedded ring 10, embedded ring 10 inner wall has cup jointed lantern ring 11, embedded ring 10 top both ends have all welded second screw thread inserted shaft 12, second screw thread inserted shaft 12 outer wall bottom has pegged graft and has been offered the screw thread on the second screw thread inserted shaft 12 outer wall top, the length of second screw thread inserted shaft 12 is greater than the height of backing ring 13, the perforation that runs through from top to bottom has all been offered at backing ring 13 both ends, second screw thread inserted shaft 12 outer wall can insert vertically upwards and pass the inside perforation of backing ring 13, the inner wall of backing ring 13 and lantern ring 11 outer wall top fixed connection, equal threaded connection in second screw thread inserted shaft 12 outer wall top has second nut 14, lantern ring 11 inner wall bottom fixedly connected with sleeve 15, through setting up the connection structure between second screw thread inserted shaft 12 and the second nut 14, can fix sleeve 15 inside jar 9.

The inner wall sliding connection of sleeve pipe 15 has slide tube 16, slide tube 16 outer wall bottom threaded connection has first screen cloth ring 17, first screen cloth ring 17 inner wall bottom fixedly connected with coarse screen cloth 18, first screen cloth ring 17 bottom fixedly connected with adapter ring 19, adapter ring 19 outer wall bottom threaded connection has second screen cloth ring 20, second screen cloth ring 20 inner wall bottom fixedly connected with fine screen cloth 21, through setting up coarse screen cloth 18 and fine screen cloth 21, can filter and separate the impurity in the latex raw materials, through setting up between first screen cloth ring 17 and the slide tube 16, simple and easy connected mode between second screen cloth ring 20 and the adapter ring 19, make the dismouting step of first screen cloth ring 17 and second screen cloth ring 20 more convenient and fast, simultaneously also be convenient for carry out unified processing to the impurity of piling up on coarse screen cloth 18 and the fine screen cloth 21, when slide tube 16 slides about sleeve pipe 15 inner wall, the latex raw materials in first screen cloth ring 17 and the second screen cloth ring 20 can be gently subverted, be favorable to improving the filter effect to the impurity in the latex, second screen cloth 20 bottom fixedly connected with funnel 22.

The top of the slide pipe 16 is welded with a top pipe 23, two ends of the top pipe 23 are fixedly connected with an inserting rod 24, the outer wall of the inserting rod 24 is inserted with a supporting ring 25, the inner wall of the supporting ring 25 is fixedly connected with a dustproof ventilation cover 26, the dustproof ventilation cover 26 is composed of a hollow cover and a dustproof net, the inner wall of the hollow cover is provided with the dustproof net, two ends of the supporting ring 25 are provided with penetrating holes penetrating up and down, the outer wall of the inserting rod 24 can vertically upwards penetrate through the inner penetrating holes of the supporting ring 25, and through a simple connection mode between the supporting ring 25 and the inserting rod 24, the disassembling and assembling steps of the dustproof ventilation cover 26 are more convenient and rapid, meanwhile, workers are convenient to pour latex raw materials into purification equipment, one end of the top tank 9 vertically penetrates through a water inlet pipe 27, one end of the bottom of the purification tank 4 vertically penetrates through a water outlet pipe 28, and the bottom end of the outer wall of the water outlet pipe 28 is in threaded connection with a bottom cover 29.

The purification tank 4 bottom center department vertically runs through has bottom plate 30, bottom plate 30 bottom center department vertically runs through has sliding ring 31, bottom plate 30 top both ends all weld upright post 32, upright post 32 top fixedly connected with screw outer loop 33, screw outer loop 33 inner wall threaded connection has screw inner loop 34, screw outer loop 33's inner wall is seted up, screw outer wall of screw inner loop 34 is seted up, screw inner loop 34 top fixedly connected with pole setting 35, pole setting 35 top fixedly connected with load-bearing ring 36, pole setting 35 opposite face fixedly connected with arc semipermeable membrane 37, load-bearing ring 36 inner wall fixedly connected with semipermeable membrane footwall 38, screw inner loop 34 inner wall fixedly connected with semipermeable membrane chassis 53, through setting up arc semipermeable membrane 37, semipermeable membrane footwall 38 and semipermeable membrane chassis 53, can carry out dialysis purification to latex, perpendicularly run through in the semipermeable membrane footwall 38 has flexible pipe 39, the perforation that runs through from top to bottom in the top center department of semipermeable membrane footwall 38, flexible pipe 39 outer wall bottom is installed in the perforation in semipermeable membrane footwall 38, flexible pipe 39 outer wall top and funnel 22 inner wall bottom plug, vertically run through in semipermeable membrane chassis 53 has a drain 40, the rubber tube 40 is installed in the perforation piece 40, seal out of the rubber tube 40 is installed to the bottom wall 40 is run through to the bottom wall 40, seal piece is installed to the bottom piece is connected with the plug piece in the outer wall 40 in the sealing piece of sealing piece 40, the sealing piece is connected with the bottom 40, the sealing piece is 41, the sealing piece is connected with the sealing piece is 41, and is connected with the sealing piece 41, 41 is connected with the sealing piece 41, and the sealing piece is connected with the sealing piece 41.

The purification tank 4 inner wall runs through the framework 44, the baffle 45 is inserted into the framework 44 inner wall, the center of the outer wall of the baffle 45 and the center of the inner wall of the framework 44 are connected with the long shaft bolts 46 in a threaded manner, the baffle 45 can be fixed in the framework 44 by utilizing the long shaft bolts 46, the telescopic pipe 39 can be inserted into the hopper 22 after the baffle 45 is removed, the rear end of the top tank 9 is fixedly connected with the first mounting plate 47, the cylinder 48 is fixedly connected with the center of the top of the first mounting plate 47, the movable end of the cylinder 48 is fixedly connected with the second mounting plate 49, the rear end of the top pipe 23 is fixedly connected with the top plate 50, the two ends of the bottom of the top plate 50 are fixedly connected with the third threaded inserting shafts 51, the outer walls of the third threaded inserting shafts 51 run through the two ends of the second mounting plate 49, the extending ends of the third threaded inserting shafts 51 are connected with the third nuts 52 in a threaded manner, the bottom ends of the outer walls of the third threaded inserting shafts 51 are provided with threads, the lengths of the third threaded inserting shafts 51 are longer than the height of the second mounting plate 49, the two ends of the second mounting plate 49 are provided with penetrating through holes vertically downwards, the outer walls of the third threaded inserting shafts 51 can vertically penetrate through the second mounting plate 49, the second mounting plate 49 and penetrate through the second mounting plate 49, the third threaded holes and are fixedly connected with the third threaded shafts 52 through the third threaded inserting shafts 52 and can be connected with the third threaded shafts and the top plate 50 when the third threaded shafts and the top plate 50 are connected with the second mounting plate and the top plate and are in a sliding structure.

The foregoing is a further elaboration of the present utility model in connection with the detailed description, and it is not intended that the utility model be limited to the specific embodiments shown, but rather that a number of simple deductions or substitutions be made by one of ordinary skill in the art without departing from the spirit of the utility model, should be considered as falling within the scope of the utility model as defined in the appended claims.

Claims (7)

1. A purification device for preparing latex products comprises a base (1) and is characterized in that arc plates (2) are welded at two ends of the top of the base (1), a bottom ring (3) is welded at the top of the arc plates (2), a purification tank (4) is fixedly connected to the bottom ring (3) inner wall, a top tank (9) is mounted at the top of the purification tank (4), a sliding tube (16) capable of sliding up and down is mounted in the top tank (9), a first screen ring (17) is connected to the bottom end of the outer wall of the sliding tube (16) in a threaded manner, a coarse screen (18) is fixedly connected to the bottom end of the inner wall of the first screen ring (17), a connecting ring (19) is fixedly connected to the bottom of the first screen ring (17), a second screen ring (20) is connected to the bottom end of the connecting ring in a threaded manner, a fine screen (21) is fixedly connected to the bottom end of the inner wall of the second screen ring (20), a funnel (22) is fixedly connected to the bottom of the top of the second screen ring (20), a top tube (23) is welded to the top tube (16), a dust cap (26) is sleeved on the inner wall of the top tank (9), one end of the top tank (9) is vertically provided with a first screen ring (17), a water inlet tube (27) is vertically penetrates through the bottom end of the water outlet tube (28) and is vertically connected to the bottom end of the purifying tank (28), the purification tank (4) bottom center department runs through perpendicularly has bottom plate (30), bottom plate (30) top both ends all weld have stand (32), stand (32) top fixedly connected with screw thread outer loop (33), screw thread outer loop (33) inner wall threaded connection has screw thread inner ring (34), screw thread inner ring (34) top fixedly connected with pole setting (35), pole setting (35) top fixedly connected with bearing ring (36), pole setting (35) opposite face fixedly connected with arc semi-permeable membrane (37), bearing ring (36) inner wall fixedly connected with semi-permeable membrane footwall (38), screw thread inner ring (34) inner wall fixedly connected with semi-permeable membrane chassis (53), vertically in semi-permeable membrane footwall (38) run through flexible pipe (39), flexible pipe (39) outer wall top and funnel (22) inner wall bottom grafting.

2. The purification device for preparing the latex product according to claim 1, wherein a top ring (5) is fixedly connected to the top end of the outer wall of the purification tank (4), first threaded inserting shafts (6) are welded at two ends of the top ring (5), mounting rings (7) are inserted at the bottom ends of the outer wall of the first threaded inserting shafts (6), first nuts (8) are connected to the top ends of the outer wall of the first threaded inserting shafts (6) in a threaded mode, and the inner wall of the mounting rings (7) is fixedly connected with the bottom ends of the outer wall of the top tank (9).

3. The purification device for preparing the latex product according to claim 1, wherein an embedded ring (10) vertically penetrates through the center of the top tank (9), a sleeve ring (11) is sleeved on the inner wall of the embedded ring (10), second threaded inserting shafts (12) are welded at two ends of the top of the embedded ring (10), a backing ring (13) is inserted at the bottom end of the outer wall of each second threaded inserting shaft (12), the inner wall of each backing ring (13) is fixedly connected with the top end of the outer wall of each sleeve ring (11), a second nut (14) is fixedly connected with the top end of the outer wall of each second threaded inserting shaft (12), a sleeve (15) is fixedly connected with the bottom end of the inner wall of each sleeve ring (11), and the inner wall of each sleeve (15) is in sliding connection with the top end of the outer wall of each sliding tube (16).

4. The purification equipment for preparing the latex product according to claim 1, wherein inserting rods (24) are fixedly connected to two ends of the top of the jacking pipe (23), supporting rings (25) are inserted into the outer walls of the inserting rods (24), and the inner walls of the supporting rings (25) are fixedly connected with the top ends of the outer walls of dustproof ventilation covers (26).

5. The purification equipment for preparing the latex product according to claim 1, wherein a slip ring (31) vertically penetrates through the center of the bottom plate (30), a rubber outlet pipe (40) vertically penetrates through the semipermeable membrane chassis (53), the outer wall of the rubber outlet pipe (40) is sleeved with the inner wall of the slip ring (31), a plugging block (41) is inserted into the inner wall of the rubber outlet pipe (40), a threaded ring (42) is connected with the bottom end of the outer wall of the rubber outlet pipe (40) in a threaded manner, and a turntable (43) is fixedly connected to the bottoms of the plugging block (41) and the threaded ring (42).

6. The purifying device for preparing latex products according to claim 1, wherein a frame body (44) penetrates through the inner wall of the purifying tank (4), a baffle plate (45) is inserted into the inner wall of the frame body (44), and long shaft bolts (46) are connected at the centers of the outer walls of the two sides of the baffle plate (45) and the centers of the two sides of the inner wall of the frame body (44) in a threaded manner.

7. The purifying device for latex product preparation according to claim 1, wherein the rear end of the top tank (9) is fixedly connected with a first mounting plate (47), the center of the top of the first mounting plate (47) is fixedly connected with a cylinder (48), the movable end of the cylinder (48) is fixedly connected with a second mounting plate (49), the rear end of the top pipe (23) is fixedly connected with a top plate (50), both ends of the bottom of the top plate (50) are fixedly connected with third threaded inserting shafts (51), the outer wall of each third threaded inserting shaft (51) penetrates through both ends of the second mounting plate (49), and the extending end of each third threaded inserting shaft (51) is connected with a third nut (52) in a threaded manner.