A commercial water purifier capable of deep purification

Abstract

The present invention discloses a commercial water purifier capable of deep purification, belonging to the field of water purification and filtration. It includes a machine barrel, with a water inlet cylinder connected to the left end of the machine barrel, and a sewage discharge cylinder I connected to the right end of the machine barrel. A partition is fixed inside the machine barrel, and a connecting piece is rotatably connected to the middle of the partition. A filter cylinder I is fixed on the left side of the connecting piece, and a filter cylinder II is fixed on the right side of the connecting piece. The right end of the filter cylinder II is rotatably connected to the right side inside the machine barrel. A slot is penetrated and opened below the outer surface of the machine barrel, and the slot is located below the filter cylinder II. During the use of the present invention, the water outlet pipe reciprocates left and right under the action of the transmission rod, and at the same time rotates under the influence of the engagement of the rack and the gear ring, so that the outlet position and direction of the water flow can be changed, enabling the filter materials in each part of the filter cylinder II to fully participate in the filtration, avoiding overuse of local filter materials, prolonging the overall service life of the filter cylinder II, and improving the stability of the filtration effect.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification filtration, and in particular to a commercial water purifier capable of deep purification. Background Art

[0002] In commercial scenarios, there are high requirements for the purification effect and stability of water purifiers. Since the outlet position of traditional water purifiers is fixed, it is easy to cause excessive local filtration pressure in the filter cartridge, resulting in serious local blockage, affecting the overall filtration effect and service life. Moreover, the cleaning and maintenance of the filter cartridge are relatively difficult. Manual cleaning not only takes time and effort but may also reduce the water quality due to untimely cleaning. In addition, the accumulation of impurities in the water on the surface and inside of the filter cartridge will affect the water flow rate and purification efficiency. Therefore, it is of great practical significance to develop a commercial water purifier that can achieve deep purification, uniform filtration, and is convenient for automatic cleaning and maintenance. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a commercial water purifier capable of deep purification, which solves the problems put forward in the above background art.

[0004] Technical Solution: To solve the above technical problems, according to one aspect of the present invention, more specifically, a commercial water purifier capable of deep purification includes a machine barrel. The left end of the machine barrel is connected to a water inlet barrel, the right end of the machine barrel is connected to a sewage discharge barrel I, a partition is fixed inside the machine barrel, a connecting piece is rotatably connected to the middle of the partition, a filter cartridge I is fixed to the left side of the connecting piece, a filter cartridge II is fixed to the right side of the connecting piece, the right end of the filter cartridge II is rotatably connected to the right side inside the machine barrel, a slot is penetrated and opened in the lower part of the outer surface of the machine barrel, the slot is located below the filter cartridge II, sliding grooves are opened on both the left and right sides inside the slot, a sliding plate is slidably connected to the inside of the two sliding grooves, a water outlet pipe is penetrated and connected to the inside of the sliding plate, a toothed ring is fixed to the outer surface of the water outlet pipe inside the sliding plate, a rack is slidably connected to the inside of the sliding plate, the rack is meshed with the toothed ring, the left end of the rack is fixed to the inside of the sliding groove, a transmission rod is threadedly connected to the left side inside the sliding plate, the left end of the transmission rod is rotatably connected to the inside of the sliding groove, a worm gear is meshed with the outer surface of the transmission rod, the top of the worm gear penetrates to the inside of the machine barrel and is fixed with a helical gear I, the right end of the helical gear I is meshed with a helical gear II, a spur gear is fixed to the right side of the helical gear II, and the right side of the spur gear is rotatably connected to the lower left side of the partition.

[0005] Furthermore, an inner frame is fixed inside the connecting piece, a lead screw is threadedly connected to the inside of the inner frame, a sewage discharge pipe is fixed to the right end of the lead screw inside the filter cartridge II, a plurality of sewage suction nozzles are communicated with the outer surface of the sewage discharge pipe, the right end of the sewage discharge pipe is located inside the sewage discharge barrel I and is fixed with a piston block, and a sewage pump is communicated with the lower part of the outer surface of the sewage discharge barrel I;

[0006] A bracket is fixed inside the water inlet cylinder. An impeller is rotatably connected to the left side of the bracket. The right end of the impeller penetrates to the right side of the bracket and is fixed with an incomplete gear. Vertical rods are rotatably connected to the upper and lower sides of the left side inside the machine barrel. Bevel gears III are fixed to the opposite ends of the two vertical rods. A bevel gear IV is meshed and connected to the right sides of the two bevel gears III in common. The bevel gear IV is fixedly connected to the center of the left side of the filter cylinder I.

[0007] Furthermore, a sewage collection tank is integrally formed on the left side inside the machine barrel. A sewage discharge cylinder II communicates with the lower part inside the sewage collection tank. The bottom end of the sewage discharge cylinder II penetrates to the lower side of the machine barrel. A scraping strip is fixed to the upper part inside the sewage collection tank. A cross bar is fixed to the center of the left side of the bevel gear II. The left end of the cross bar penetrates to the inside of the sewage collection tank and is fixed with a bevel gear V. A bevel gear VI is meshed with the bottom of the bevel gear V. A rotating rod is fixed to the middle of the bevel gear VI. A fixed valve plate is fixed inside the sewage discharge cylinder II. A movable valve plate is fixed to the upper surface of the fixed valve plate at the bottom end of the rotating rod. The rotating rod is rotatably connected to the fixed valve plate and the scraping strip.

[0008] Furthermore, gear teeth are fixed to the outer surface of the connecting piece. The connecting piece is meshed and connected to the spur gear through the gear teeth.

[0009] Furthermore, one end of the sewage suction nozzle away from the sewage discharge pipe is a rubber suction cup. The sewage suction nozzle is attached to the inner surface of the filter cylinder II through the rubber suction cup; Rubber layers are arranged at both the left and right ends of the sliding plate.

[0010] Furthermore, the top of the scraping strip is attached to the outer surface of the filter cylinder I.

[0011] Furthermore, the incomplete gear is adapted to the two bevel gears III.

[0012] Furthermore, a sleeve is fixed to the lower surface of the sliding plate outside the bottom of the water outlet pipe. The sleeve is rotatably connected to the water outlet pipe. The water outlet pipe is an L-shaped elbow pipe.

[0013] Furthermore, the part of the left end of the transmission rod meshed with the worm gear is a worm, and the part of the right end of the transmission rod threadedly connected to the sliding plate is a screw.

[0014] The beneficial effects of a commercial water purifier capable of deep purification according to the present invention are:

[0015] During the use of the present invention, the water outlet pipe reciprocates left and right under the action of the transmission rod, and at the same time rotates under the influence of the meshing of the rack and the gear ring, so that the outlet position and direction of the water flow can be changed, enabling the filter materials in various parts of the second filter cartridge to fully participate in the filtration, avoiding overuse of local filter materials, prolonging the overall service life of the second filter cartridge, and improving the stability of the filtration effect.

[0016] When the connecting piece rotates in the present invention, the lead screw drives the sewage pipe, the sewage suction nozzle and the piston block to move left and right. Cooperating with the axial rotation of the second filter cartridge, the sewage suction nozzle and the second filter cartridge form a spiral relative displacement, which can attract and process the impurities sieved in the inner wall and filter holes of the second filter cartridge more comprehensively over a large area and discharge them;

[0017] When the first filter cartridge rotates, the scraping strip scrapes the residual impurities on its outer wall, and the impurities fall into the sewage collection tank. And the movable valve plate periodically rotates to open the second sewage discharge cylinder, so that the scraped impurities and a small amount of water flow are discharged, realizing automatic cleaning;

[0018] The automatic cleaning can timely remove the impurities in the filter cartridge, ensure the normal operation of the filter cartridge, prolong the service life of the filter cartridge, and reduce the manual maintenance cost and maintenance frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described in detail below with reference to the drawings and specific implementation methods.

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is a schematic internal structure diagram of the present invention;

[0022] Figure 3 is a schematic front sectional structure diagram of the present invention;

[0023] Figure 4 is the present invention Figure 3 The enlarged structure diagram at A in;

[0024] Figure 5 is a schematic top sectional structure diagram of the present invention;

[0025] Figure 6 is a schematic diagram of the internal structure of the machine barrel in the present invention;

[0026] Figure 7 is in the present invention Figure 6 The partial sectional structure diagram of;

[0027] Figure 8 is a schematic top sectional structure diagram of the machine barrel in the present invention.

[0028] In the figure: 1, barrel; 2, water inlet tube; 3, sewage discharge tube 1; 4, partition board; 5, connecting piece; 6, filter cartridge 1; 7, filter cartridge 2; 8, slot; 9, slideway; 10, slide plate; 11, water outlet pipe; 12, sleeve; 13, gear ring; 14, rack; 15, transmission rod; 16, worm gear; 17, helical gear 1; 18, helical gear 2; 19, spur gear; 20, inner frame; 21, lead screw; 22, sewage discharge pipe; 23, sewage suction nozzle; 24, piston block; 25, sewage pump; 26, support; 27, impeller; 28, incomplete gear; 29, vertical rod; 30, helical gear 3; 31, helical gear 4; 32, sewage collection tank; 33, sewage discharge tube 2; 34, scraping bar; 35, cross bar; 36, helical gear 5; 37, helical gear 6; 38, rotating rod; 39, fixed valve plate; 40, movable valve plate. Detailed implementation manners

[0029] The present invention will be described in detail below with reference to the drawings and in combination with embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.

[0030] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0031] Refer to Figures 1-8, A commercial water purifier capable of deep purification, including a machine barrel 1. The left end of the machine barrel 1 is connected to a water inlet cylinder 2, and the right end of the machine barrel 1 is connected to a first sewage discharge cylinder 3. A partition 4 is fixed inside the machine barrel 1. A connecting piece 5 is rotatably connected to the middle of the partition 4. A first filter cylinder 6 is fixed on the left side of the connecting piece 5, and a second filter cylinder 7 is fixed on the right side of the connecting piece 5. The filter holes of the second filter cylinder 7 are smaller than those of the first filter cylinder 6. When water enters the device, it first passes through the preliminary filtration of the first filter cylinder 6, filtering out larger impurities in the water outside the first filter cylinder 6. Then, it enters the second filter cylinder 7 through the inside of the first filter cylinder 6 and undergoes secondary deep purification filtration from the inside to the outside. Activated carbon particles are filled inside the first filter cylinder 6 and the second filter cylinder 7 to further improve the purification effect. The right end of the second filter cylinder 7 is rotatably connected to the right side inside the machine barrel 1. A slot 8 is penetrated and opened in the lower part of the outer surface of the machine barrel 1. The slot 8 is located below the second filter cylinder 7. Sliding grooves 9 are opened on both the left and right sides inside the slot 8. A slide plate 10 is slidably connected to the inside of the two sliding grooves 9. A water outlet pipe 11 is penetrated and connected to the inside of the slide plate 10. A toothed ring 13 is fixed on the outer surface of the water outlet pipe 11 inside the slide plate 10. A rack 14 is slidably connected to the inside of the slide plate 10. The rack 14 is meshed with the toothed ring 13. The left end of the rack 14 is fixedly connected to the inside of the sliding groove 9. A transmission rod 15 is threadedly connected to the left side inside the slide plate 10. The left end of the transmission rod 15 is rotatably connected to the inside of the sliding groove 9. A worm gear 16 is meshed with the outer surface of the transmission rod 15. The top of the worm gear 16 penetrates to the inside of the machine barrel 1 and is fixed with a first bevel gear 17. The right end of the first bevel gear 17 is meshed with a second bevel gear 18. A straight gear 19 is fixed on the right side of the second bevel gear 18. The right side of the straight gear 19 is rotatably connected to the lower left side of the partition 4;

[0032] An inner frame 20 is fixed inside the connecting piece 5. A lead screw 21 is threadedly connected to the inside of the inner frame 20. The right end of the lead screw 21 is fixed with a sewage discharge pipe 22 inside the second filter cylinder 7. A plurality of sewage suction nozzles 23 are communicated with the outer surface of the sewage discharge pipe 22. The right end of the sewage discharge pipe 22 is located inside the first sewage discharge cylinder 3 and is fixed with a piston block 24. A sewage pump 25 is communicated with the lower part of the outer surface of the first sewage discharge cylinder 3;

[0033] A bracket 26 is fixed inside the water inlet cylinder 2. An impeller 27 is rotatably connected to the left side of the bracket 26. The right end of the impeller 27 penetrates to the right side of the bracket 26 and is fixed with an incomplete gear 28. Vertical rods 29 are rotatably connected to both the upper and lower parts on the left side inside the machine barrel 1. Bevel gears 30 are fixed to the opposite ends of the two vertical rods 29. A fourth bevel gear 31 is meshed with the right sides of the two bevel gears 30. The fourth bevel gear 31 is fixed to the center of the left side of the first filter cylinder 6;

[0034] On the left side inside the barrel 1, a sewage collection tank 32 is integrally formed. Below the inside of the sewage collection tank 32, a second sewage discharge pipe 33 is connected. The bottom end of the second sewage discharge pipe 33 penetrates to the lower part of the barrel 1. Above the inside of the sewage collection tank 32, a scraping bar 34 is fixed. At the center of the left side of the second bevel gear 18, a cross bar 35 is fixed. The left end of the cross bar 35 penetrates into the inside of the sewage collection tank 32 and is fixed with a fifth bevel gear 36. The bottom of the fifth bevel gear 36 is meshed with a sixth bevel gear 37. In the middle of the sixth bevel gear 37, a rotating rod 38 is fixed. Inside the second sewage discharge pipe 33, a fixed valve plate 39 is fixed. At the upper surface of the fixed valve plate 39, a movable valve plate 40 is fixed at the bottom end of the rotating rod 38. The rotating rod 38 is rotationally connected with the fixed valve plate 39 and the scraping bar 34;

[0035] During use, the left end of the water inlet tube 2 is connected to an external water supply pipe. External water sources enter the device from left to right. When the water flow disturbs the impeller 27, the incomplete gear 28 rotates, and during the intermittent transmission between the two bevel gears three 30, the bevel gear four 31 drives the first filter cylinder 6 to rotate intermittently in both forward and reverse axial directions. At the same time, the connecting member 5 rotates synchronously with the second filter cylinder 7. The water flow is filtered and enters the inside of the first filter cylinder 6, and then enters the inside of the second filter cylinder 7. After being filtered by the second filter cylinder 7, it flows out of the second filter cylinder 7 and finally is discharged through the water outlet pipe 11;

[0036] During the rotation of the connecting member 5, the lead screw 21 slides left and right under the action of threaded connection, so that the sewage discharge pipe 22, the sewage suction nozzle 23, and the piston block 24 move synchronously. And when needed, the sewage pump 25 is turned on, and through the sewage suction nozzle 23, the inside of the second filter cylinder 7 is cleaned. Since the sewage suction nozzle 23 moves left and right while the second filter cylinder 7 rotates axially, a spiral relative displacement is formed between the second filter cylinder 7 and the sewage suction nozzle 23, so that impurities sieved from the inner wall and filter holes of the second filter cylinder 7 can be attracted and processed more comprehensively over a large area and discharged, achieving the effect of cleaning the second filter cylinder 7 and treating sewage;

[0037] While the inside of the second filter cylinder 7 is being cleaned when the connecting member 5 rotates, the scraping bar 34 scrapes off the residual impurities on the outer wall of the first filter cylinder 6, and the impurities fall into the inside of the sewage collection tank 32. And under the sequential transmission of the connecting member 5, the second bevel gear 18, the cross bar 35, the fifth bevel gear 36, the sixth bevel gear 37, and the rotating rod 38, the movable valve plate 40 rotates continuously. When the movable valve plate 40 overlaps with the fixed valve plate 39, the second sewage discharge pipe 33 is temporarily opened, so that the scraped impurities and a small amount of water flow are discharged through the second sewage discharge pipe 33, achieving the effect of cleaning the first filter cylinder 6 and treating sewage;

[0038] While the helical gear II 18 is rotating, the worm gear 16 is rotated by the transmission of the helical gear I 17, and the transmission rod 15 is axially rotated. When the transmission rod 15 reciprocates axially, the slide plate 10 will drive the water outlet pipe 11 to move left and right reciprocally, so that the position of the top opening of the water outlet pipe 11 can be changed left and right, the position of the filter cartridge II 7 close to it can be replaced, and the water outlet pipe 11 is rotated in cooperation with the relative movement of the rack 14 and the gear ring 13, so that the direction and position of the top opening of the water outlet pipe 11 are continuously changed. Under the axial rotation cooperation of the filter cartridge II 7, the filtering position of the filter cartridge II 7 contacted by the water flow will not be limited to a single point or surface, so that the filter cartridge II 7 can perform the filtering operation more evenly.

[0039] Refer to Figures 6-7 , the outer surface of the connecting piece 5 is fixed with gear teeth, and the connecting piece 5 is meshed and connected with the spur gear 19 through the gear teeth. When the filter cartridge I 6 drives the connecting piece 5 to rotate, the spur gear 19 will be rotated through the gear teeth.

[0040] Refer to Figure 3 , Figure 7 , one end of the dirt suction nozzle 23 far from the sewage discharge pipe 22 is a rubber suction cup, and the dirt suction nozzle 23 is attached to the inner surface of the filter cartridge II 7 through the rubber suction cup to improve the suction force so as to better suck the impurities inside the filter cartridge II 7 and in the filter holes; rubber layers are provided at both the left and right ends of the slide plate 10 to improve the sealing performance.

[0041] Refer to Figures 3-4 , the top of the scraping strip 34 is attached to the outer surface of the filter cartridge I 6. When the filter cartridge I 6 rotates, the scraping strip 34 adheres to the surface of the filter cartridge I 6, and the impurities on its surface are scraped into the sewage collection tank 32.

[0042] Refer to Figures 2-6 , the incomplete gear 28 is adapted to the two helical gears III 30. When the incomplete gear 28 rotates, it can only be meshed and transmitted with a single helical gear III 30 within a certain time. Thus, through the intermittent rotation of the two helical gears III 30, the helical gear IV 31 is rotated.

[0043] Refer to Figures 2-6 , a sleeve 12 is fixed on the lower surface of the slide plate 10 outside the bottom of the water outlet pipe 11. The sleeve 12 is rotatably connected to the water outlet pipe 11. The water outlet pipe 11 is an L-shaped elbow pipe. When the L-shaped elbow pipe of the water outlet pipe 11 rotates, the top opening thereof can continuously change the direction and position during the rotation, so as to guide the water flow to filter and flow out from different positions of the filter cartridge II 7.

[0044] Refer to Figures 5-7 , the part of the left end of the transmission rod 15 meshed with the worm gear 16 is a worm, and the part of the right end of the transmission rod 15 threadedly connected with the slide plate 10 is a screw rod, so that the transmission rod 15 is rotated under the transmission of the worm gear 16, and at the same time, the slide plate 10 is slid left and right through the screw rod part.

[0045] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. A commercial water purifier capable of deep purification, comprising a machine barrel (1), characterized in that: The left end of the barrel (1) is connected to a water inlet tube (2), the right end of the barrel (1) is connected to a first sewage discharge tube (3), a partition (4) is fixed inside the barrel (1), a connecting piece (5) is rotatably connected to the middle of the partition (4), a first filter cylinder (6) is fixed to the left side of the connecting piece (5), a second filter cylinder (7) is fixed to the right side of the connecting piece (5), the right end of the second filter cylinder (7) is rotatably connected to the right side inside the barrel (1), a slot (8) is penetrated and opened in the lower part of the outer surface of the barrel (1), the slot (8) is located below the second filter cylinder (7), sliding grooves (9) are opened on both the left and right sides inside the slot (8), a slide plate (10) is slidably connected inside the two sliding grooves (9), a water outlet pipe (11) is penetrated and connected inside the slide plate (10), a transmission rod (15) is threadedly connected to the left side inside the slide plate (10), the left end of the transmission rod (15) is rotatably connected to the inside of the sliding groove (9), a worm gear (16) is meshed with the outer surface of the transmission rod (15), the top end of the worm gear (16) penetrates into the inside of the barrel (1) and is fixed with a first bevel gear (17), a second bevel gear (18) is meshed with the right end of the first bevel gear (17), a spur gear (19) is fixed to the right side of the second bevel gear (18), and the right side of the spur gear (19) is rotatably connected to the lower left side of the partition (4); An inner frame (20) is fixed inside the connecting piece (5), a lead screw (21) is threadedly connected inside the inner frame (20), a sewage discharge pipe (22) is fixed to the right end of the lead screw (21) inside the second filter cylinder (7), a plurality of sewage suction nozzles (23) are communicated with the outer surface of the sewage discharge pipe (22), the right end of the sewage discharge pipe (22) is located inside the first sewage discharge tube (3) and is fixed with a piston block (24), and a sewage pump (25) is communicated with the lower part of the outer surface of the first sewage discharge tube (3); A support (26) is fixed inside the water inlet tube (2), an impeller (27) is rotatably connected to the left side of the support (26), the right end of the impeller (27) penetrates to the right side of the support (26) and is fixed with an incomplete gear (28), vertical rods (29) are rotatably connected to both the upper and lower parts on the left side inside the barrel (1), a third bevel gear (30) is fixed to the opposite ends of the two vertical rods (29), a fourth bevel gear (31) is meshed with the right sides of the two third bevel gears (30) together, and the fourth bevel gear (31) is fixedly connected to the center of the left side of the first filter cylinder (6); On the left side inside the barrel (1), a sewage collection tank (32) is integrally formed. Below the inside of the sewage collection tank (32), a second sewage discharge pipe (33) is connected. The bottom end of the second sewage discharge pipe (33) penetrates to the lower part of the barrel (1). Above the inside of the sewage collection tank (32), a scraping bar (34) is fixed. At the center of the left side of the second bevel gear (18), a cross bar (35) is fixed. The left end of the cross bar (35) penetrates into the inside of the sewage collection tank (32) and is fixed with a fifth bevel gear (36). At the bottom of the fifth bevel gear (36), a sixth bevel gear (37) is meshed. In the middle of the sixth bevel gear (37), a rotating rod (38) is fixed. Inside the second sewage discharge pipe (33), a fixed valve plate (39) is fixed. At the upper surface of the fixed valve plate (39), a movable valve plate (40) is fixed at the bottom end of the rotating rod (38). The rotating rod (38) is rotationally connected to the fixed valve plate (39) and the scraping bar (34).

2. The commercial water purifier capable of deep purification according to claim 1, wherein: On the outer surface of the connecting piece (5), gear teeth are fixed. The connecting piece (5) is meshed with the spur gear (19) through the gear teeth.

3. The commercial water purifier capable of deep purification according to claim 1, wherein: One end of the sewage suction nozzle (23) away from the sewage discharge pipe (22) is a rubber suction cup. The sewage suction nozzle (23) is attached to the inner surface of the second filter cylinder (7) through the rubber suction cup; Rubber layers are provided at both the left and right ends of the sliding plate (10).

4. The commercial water purifier capable of deep purification according to claim 1, wherein: The top of the scraping bar (34) is attached to the outer surface of the first filter cylinder (6).

5. The commercial water purifier capable of deep purification according to claim 1, wherein: The incomplete gear (28) is adapted to the two bevel gears three (30).

6. A commercial water purifier capable of deep purification according to claim 1, characterized in that: Below the lower surface of the sliding plate (10) and outside the bottom of the water outlet pipe (11), a sleeve (12) is fixed. The sleeve (12) is rotationally connected to the water outlet pipe (11). The water outlet pipe (11) is an L-shaped elbow pipe.

7. The commercial water purifier capable of deep purification according to claim 1, characterized in that: The part of the left end of the transmission rod (15) meshed with the worm gear (16) is a worm. The part of the right end of the transmission rod (15) threadedly connected to the sliding plate (10) is a screw rod.

8. The commercial water purifier capable of deep purification according to claim 1, wherein: On the outer surface of the water outlet pipe (11) and inside the sliding plate (10), a toothed ring (13) is fixed. Inside the sliding plate (10), a rack (14) is slidably connected. The rack (14) is meshed with the toothed ring (13). The left end of the rack (14) is fixedly connected to the inside of the slideway (9).

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