Ultra-high pressure water slip ring

Abstract

The present application relates to an ultra-high pressure water slip ring, and to the field of slip rings, which includes an axis core and a shell sleeved on the outside of the axis core, the end of the shell is detachably connected with a top joint, the top joint is provided with a groove for the end of the axis core to be inserted, and the shell is provided with an elastic sealing ring sleeved on the axis core and located in the groove. The ultra-high pressure water slip ring in the present application has the advantages of better performance and longer service life.

Description

Technical Field

[0001] The present application relates to the field of slip rings, and in particular to ultra-high pressure water slip rings. Background Art

[0002] Aluminum formwork plays a major role in temporary support in construction, enabling concrete and structures to be formed in the specified positions. Aluminum sheet needs to be cleaned before use to reduce the possibility of concrete inclusions and other defects caused by debris on the aluminum sheet. In the specific cleaning process, in order to ensure the cleaning effect, ultra-high pressure water is generally used for flushing. The water pipe that can spray ultra-high pressure water generally uses a water slip ring to connect the nozzle and the water inlet pipe, so that the nozzle can rotate while spraying water.

[0003] The current ultra-high pressure water cleaning equipment basically operates intermittently. The main reason is that the existing water slip ring products cannot meet the requirement of continuous operation for more than 8 hours. Long-term operation easily causes the water slip ring to wear out and then leak and become unusable. However, for the cleaning of aluminum film panels, especially in the process of large-scale building construction, the water slip ring products that can only operate within 8 hours obviously cannot meet the actual demand of continuous operation for 18-20 hours, and need further improvement. Summary of the invention

[0004] In order to improve the performance of a water slip ring, the present application provides an ultra-high pressure water slip ring.

[0005] The ultra-high pressure water slip ring provided in this application adopts the following technical solution:

[0006] The ultra-high pressure water slip ring comprises an axis core and a shell sleeved on the outside of the axis core. The end of the shell is detachably connected with a top joint, and the top joint has a groove for inserting the end of the axis core. The shell is provided with an elastic sealing ring sleeved on the axis core and located in the groove.

[0007] By adopting the above technical solution, during specific operation, high-pressure water flows into the shaft core through the top joint. During the flow of water, a small amount of water will come into contact with the elastic sealing ring. Under the squeeze of water pressure, the elastic sealing ring can be deformed into a drum shape. The drum-shaped elastic sealing ring can be well pressed against the inner wall of the groove. At the same time, the deformed elastic sealing ring can also tightly wrap the shaft core, thereby effectively reducing the possibility of water flowing into the water slip ring and damaging the water slip ring, and effectively improving the performance of the water slip ring.

[0008] Optionally, the elastic sealing ring is a sealing ring made of ultra-high molecular weight polyethylene.

[0009] By adopting the above technical scheme, ultra-high molecular polyethylene, as polyethylene with a molecular weight of more than 1 million, has excellent wear resistance, impact resistance and corrosion resistance. The use of ultra-high molecular polyethylene to make elastic sealing rings can give the elastic sealing rings better wear resistance and longer service life, thereby meeting the demand for long-term relative rotation between the shaft core and the top joint, reducing the possibility of water flowing into the water slip ring through the gap between the top joint and the shaft core, and improving the performance and service life of the water slip ring.

[0010] Optionally, the elastic sealing ring sleeve is provided with a first sealing ring.

[0011] By adopting the above technical solution, the first sealing ring is used to seal the gap between the elastic sealing ring and the top joint. When the water pressure does not reach the pressure that causes the elastic sealing ring to deform, the first sealing ring plays the role of sealing the groove, thereby reducing the possibility of water flowing into the water sliding ring.

[0012] Optionally, the first sealing ring is a sealing ring made of nitrile material.

[0013] By adopting the above technical solution, nitrile butadiene rubber has good water resistance, wear resistance and flexibility. With the cooperation of the first sealing ring and the elastic sealing ring, the possibility of water flowing into the water sliding ring can be effectively reduced.

[0014] Optionally, the wall thickness of the portion of the shaft core located in the groove is smaller than the wall thickness of the portion of the shaft core extending out of the groove.

[0015] By adopting the above technical solution, relative rotation will occur between the shaft core and the top joint, and the friction between the shaft core and the top joint will generate a large amount of heat. The generated heat will easily reduce the service life of the elastic sealing ring. The wall thickness of the shaft core located in the top joint becomes thinner. When water flows through the shaft core, it can take away the heat generated between the shaft core and the elastic sealing ring, thereby reducing the impact of heat on the elastic sealing ring.

[0016] Optionally, the outer wall of the shaft core in contact with the elastic sealing ring is mirror-finished.

[0017] By adopting the above technical solution, the outer wall surface of the shaft core is smooth after mirror treatment, which can effectively reduce the friction coefficient between the shaft core and the top joint, reduce heat generation, and thus extend the service life of the elastic sealing ring.

[0018] Optionally, a waterproof sealing ring and a first skeleton oil seal which are sleeved on the shaft core are provided in the shell, the waterproof sealing ring is located between the top joint and the first skeleton oil seal, the waterproof sealing ring is provided with a drainage groove which is located on the side of the first skeleton oil seal facing the top joint and is connected to the shell, and a second sealing ring is sleeved on the waterproof sealing ring which is located on one side of the drainage groove.

[0019] By adopting the above technical solution, after the elastic sealing ring is worn out, water can easily flow into the water slip ring through the gap between the shaft core and the top joint, thereby affecting the normal use of the water slip ring. The waterproof sealing ring and the first skeleton oil seal are used to further seal the gap between the shaft core and the top joint, thereby reducing the possibility of water flowing into the water slip ring.

[0020] Optionally, a first deep groove ball bearing and a tapered roller bearing sleeved on the shaft core are provided in the housing, the first deep groove ball bearing is located between the first skeleton oil seal and the tapered roller bearing, and a bearing spacer sleeve is provided in the housing between the first deep groove ball bearing and the tapered roller bearing.

[0021] By adopting the above technical solution, during the specific operation of the water slip ring, the shaft core will be subjected to axial force while spraying water, and the tapered roller bearing has good axial load bearing performance, thereby reducing the possibility of shaft core loss under the action of axial force and extending the service life of the shaft core.

[0022] Optionally, a second skeleton oil seal and a second deep groove ball bearing are provided on one end of the shell away from the top joint, and the second skeleton oil seal is located between the top joint and the second deep groove ball bearing.

[0023] By adopting the above technical solution, the shaft core will generate radial centrifugal force during high-speed rotation, which makes the shaft core tend to deflect, thereby easily aggravating the wear of the shaft core and the housing. The second deep groove ball bearing can ensure that the shaft core rotates on the axis of the housing, ensuring the coaxial accuracy of the shaft core and the housing and reducing the degree of wear on the shaft core.

[0024] Optionally, the housing is connected to a fixing ring, the shaft core passes through the fixing ring, and a third skeleton oil seal, a third deep groove ball bearing and a fourth skeleton oil seal which are sequentially sleeved on the shaft core are arranged in the fixing ring.

[0025] By adopting the above technical solution, when the shaft core rotates, the part of the shaft core extending out of the shell is more likely to deflect. The water slip ring can be installed in a specified position using a fixing ring, and the third deep groove ball bearing is used to reduce the possibility of the shaft core deflecting outside the shell.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The present application sets an elastic sealing ring on the outer side of the shaft core. When water flows, the water pressure can cause the elastic sealing ring to deform, so that the elastic sealing ring can tightly wrap the shaft core and at the same time can conflict with the inner wall of the groove in the top joint, thereby achieving the purpose of sealing the gap between the top joint and the shaft core, effectively reducing the possibility of water flowing into the water slip ring and damaging the water slip ring, and enhancing the performance of the water slip ring;

[0028] 2. This application can effectively reduce the influence of the heat generated by the friction between the shaft core and the top joint on the elastic sealing ring by thinning the end of the shaft core inserted into the top joint and mirror-finishing the outer wall of the shaft core, thereby extending the service life of the elastic sealing ring;

[0029] 3. The present application uses a tapered roller bearing to bear the axial force acting on the shaft core, thereby reducing the possibility of the shaft core being worn out under the action of the axial force, and effectively extending the service life of the shaft core. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the ultra-high pressure water slip ring in the embodiment of the present application.

[0031] Figure 2 It is a cross-sectional view of an ultra-high pressure water slip ring in an embodiment of the present application.

[0032] Figure 3 It is a cross-sectional view of the shell in the embodiment of the present application.

[0033] Figure 4 It is a cross-sectional view of the fixing ring in the embodiment of the present application.

[0034] Explanation of the reference numerals in the accompanying drawings: 1. shaft core; 11. reducer; 12. upper bevel water jet; 13. nozzle; 2. housing; 21. water outlet; 22. first skeleton oil seal; 23. first deep groove ball bearing; 24. bearing spacer; 25. tapered roller bearing; 26. second skeleton oil seal; 27. second deep groove ball bearing; 3. top joint; 31. groove; 32. elastic sealing ring; 33. first sealing ring; 34. waterproof sealing ring; 341. protruding ring; 342. drainage groove; 343. second sealing ring; 4. hexagonal joint; 5. fixing ring; 51. spacer ring; 52. double-row sprocket; 53. oil seal seat; 54. third skeleton oil seal; 55. third deep groove ball bearing; 56. fourth skeleton oil seal; 57. oil seal end cover; 571. fifth skeleton oil seal. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-4 This application is described in further detail.

[0036] The present application embodiment discloses an ultra-high pressure water slip ring. Figure 1 The ultra-high pressure water slip ring includes a hollow shaft core 1, a cylindrical shell 2 is arranged outside the shaft core 1, a hollow top joint 3 is threadedly connected to one end of the shell 2, and a hollow hexagonal joint 4 is threadedly connected to the top joint 3. Water can flow into the shaft core 1 through the hexagonal joint 4 and the top joint 3.

[0037] Reference Figure 2 and Figure 3, the top joint 3 is coaxially provided with a groove 31, the end of the shaft core 1 is inserted into the groove 31, and an elastic sealing ring 32 located in the groove 31 is sleeved on the shaft core 1, and the elastic sealing ring 32 is fixed in the groove 31. The elastic sealing ring 32 is made of ultra-high molecular polyethylene material, which can improve the wear resistance of the elastic sealing ring 32 and extend the service life of the elastic sealing ring 32. In addition, after water is passed, the water pressure can deform the elastic sealing ring 32, so that the elastic sealing ring 32 is drum-shaped. The drum-shaped elastic sealing ring 32 can contact the inner wall of the groove 31 on the one hand, and can tightly wrap the shaft core 1 on the other hand, thereby achieving the purpose of sealing the gap between the shaft core 1 and the groove 31, and reducing the possibility of water flowing into the inside of the water slip ring.

[0038] In order to further achieve the effect of sealing the gap between the shaft core 1 and the groove 31, the elastic sealing ring 32 is provided with a first sealing ring 33 made of nitrile material. When the water pressure does not reach the pressure that deforms the elastic sealing ring 32, the first sealing ring 33 seals the gap between the shaft core 1 and the groove 31, thereby reducing the possibility of water flowing into the inside of the water sliding ring.

[0039] After water flows, the shaft core 1 will rotate relative to the elastic sealing ring 32, and friction will be generated between the shaft core 1 and the elastic sealing ring 32, which will generate a lot of heat. The generated heat will seriously reduce the service life of the elastic sealing ring 32. For this reason, the wall thickness of the end of the shaft core 1 inserted into the groove 31 is smaller than the wall thickness of the part of the shaft core 1 extending out of the groove 31. The thinning of the wall thickness of the shaft core 1 helps the water flowing through the shaft core 1 to take away the heat generated between the shaft core 1 and the elastic sealing ring 32, thereby reducing the impact of heat on the elastic sealing ring 32. In order to further increase the service life of the elastic sealing ring 32, the part where the outer wall of the shaft core 1 contacts the elastic sealing ring 32 is mirror-finished to improve the smoothness of the outer wall of the shaft core 1, thereby reducing the friction coefficient between the shaft core 1 and the elastic sealing ring 32, thereby reducing the generation of heat.

[0040] After long-term use, the elastic sealing ring 32 of the water slip ring will be worn out. When it loses its sealing function, the water in the shaft core 1 will flow into the water slip ring, thereby affecting the normal use of the water slip ring. In order to reduce the occurrence of this situation, a waterproof sealing ring 34 is provided in the housing 2 and is sleeved on the shaft core 1. The waterproof sealing ring 34 is located on one side of the top joint 3, and a protruding ring 341 is protruded on the waterproof sealing ring 34 to be inserted into the groove 31. The waterproof sealing ring 34 has a plurality of drainage grooves 342 in its radial direction, and the housing 2 has a water outlet 21 connected to the drainage grooves 342. When water overflows the shaft core 1, the water can be discharged from the housing 2 through the drainage grooves 342 and the water outlet 21. At the same time, a first skeleton oil seal 22 is provided in the housing 2 and is located on one side of the waterproof sealing ring 34, which further reduces the possibility of water flowing into the water slip ring. A second sealing ring 343 is sleeved on the waterproof sealing ring 34. The second sealing ring 343 is located on the side of the drainage groove 342 away from the top joint 3 to seal the gap between the waterproof sealing ring 34 and the shell 2, thereby reducing the possibility of water overflowing from the drainage groove 342 and flowing into the interior of the water slip ring when flowing through the drainage groove 342.

[0041] The housing 2 is provided with a first deep groove ball bearing 23, a bearing spacer 24 and a tapered roller bearing 25 sleeved on the shaft core 1. The first deep groove ball bearing 23 is located between the first skeleton oil seal 22 and the bearing spacer 24 to maintain the coaxial accuracy between the shaft core 1 and the housing 2 and reduce the possibility of the direction of the shaft core 1 deflecting when the shaft core 1 rotates. The tapered roller bearing 25 is located on the side of the bearing spacer 24 away from the first deep groove ball bearing 23 to bear the axial force transmitted by the shaft core 1 during use, reduce the loss of the shaft core 1, and extend the service life of the water slip ring.

[0042] During the rotation of the shaft core 1, the portion of the shaft core 1 extending out of the housing 2 is more likely to deflect due to the lack of the limiting effect of the housing 2. For this reason, the end of the housing 2 is provided with a second skeleton oil seal 26 and a second deep groove ball bearing 27 sleeved on the shaft core 1, and the second deep groove ball bearing 27 is close to the end of the housing 2. The second deep groove ball bearing 27 is used to ensure that the portion of the shaft core 1 extending out of the housing 2 can remain coaxial with the housing 2, thereby reducing the possibility of the shaft core 1 deflecting at the end of the housing 2 when the shaft core 1 rotates, thereby generating loss.

[0043] Reference Figure 2 and Figure 4 The shell 2 is connected with a hollow fixing ring 5 by screws, and a spacer ring 51 located in the cavity of the fixing ring 5 is installed on the shaft core 1. A double-row sprocket 52 is provided on the spacer ring 51. The water sliding ring can be installed at a specified position by using the fixing ring 5, and the shaft core 1 can be driven to rotate by means of the double-row sprocket 52 and other power sources such as a motor and a chain.

[0044] The shaft core 1 passes through the end of the fixing ring 5, and the fixing ring 5 is provided with an oil seal seat 53 sleeved on the shaft core 1, a third skeleton oil seal 54, a third deep groove ball bearing 55, a fourth skeleton oil seal 56, an oil seal end cover 57, and a fifth skeleton oil seal 571 located in the oil seal end cover 57 in sequence. The oil seal seat 53 and the oil seal end cover 57 are both connected to the fixing ring 5 by screws. The third deep groove ball bearing 55 is used to further reduce the possibility of deflection of the part of the shaft core 1 extending out of the housing 2, and further reduce the loss of the shaft core 1.

[0045] The end of the shaft core 1 is connected with a reducer 11, and the reducer 11 is equipped with an upper bevel water jet 12, and the upper bevel water jet 12 is equipped with a nozzle 13. During operation, the water in the shaft core 1 enters the upper bevel water jet 12 through the reducer 11, and then sprays to the aluminum film plate to be cleaned through the nozzle 13. Under the high-pressure water pressure flushing, the purpose of effectively cleaning the aluminum film plate can be achieved.

[0046] The implementation principle of the ultra-high pressure water slip ring of the embodiment of the present application is: the high-pressure water sprayed out through the high-pressure hose enters the hexagonal joint 4, the top joint 3, the shaft core 1, the reducer 11, the upper angled water jet 12 and the nozzle 13 in sequence, and is finally sprayed to the aluminum film plate to flush the aluminum film plate. During the flushing process, driven by the double-row sprocket 52, the shaft core 1 rotates at high speed, and with the help of the first deep groove ball bearing 23, the tapered roller bearing 25, the second deep groove ball bearing 27 and the third deep groove ball bearing 55, the shaft core 1 and the housing 2 maintain coaxial accuracy, and the loss of the shaft core 1 can also be reduced.

[0047] In addition, the gap between the shaft core 1 and the top joint 3 is sealed with the help of the elastic sealing ring 32 and the first sealing ring 33 to reduce the possibility of water flowing into the water slip ring. At the same time, with the help of the auxiliary effect of the waterproof sealing ring 34, the drainage groove 342, the first skeleton oil seal 22 and the second sealing ring 343, the possibility of water flowing into the water slip ring is further reduced, thereby ensuring that the water slip ring has a long service life. The ultra-high pressure water slip ring in the embodiment of the present application rotates at a speed of 1000r / min under a water pressure of 100Mp. The elastic sealing ring 32 loses its sealing function and cannot be used after working continuously for 90h. In addition to replacing the elastic sealing ring 32, the ultra-high pressure water slip ring in the embodiment of the present application can operate continuously for 1200h without maintenance, showing excellent performance and a long service life.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1.Ultra-high pressure water slip ring, characterized by: The invention comprises an axis core (1) and a shell (2) sleeved on the outside of the axis core (1); the end of the shell (2) is detachably connected to a top joint (3); the top joint (3) is provided with a groove (31) for the end of the axis core (1) to be inserted; the shell (2) is provided with an elastic sealing ring (32) sleeved on the axis core (1) and located in the groove (31); the elastic sealing ring (32) is sleeved with a first sealing ring (33); the wall thickness of the portion of the axis core (1) located in the groove (31) is smaller than the wall thickness of the portion of the axis core (1) extending out of the groove (31); The outer wall of the shaft core (1) in contact with the elastic sealing ring (32) is mirror-finished. A waterproof sealing ring (34) and a first skeleton oil seal (22) sleeved on the shaft core (1) are provided in the housing (2). The waterproof sealing ring (34) is located between the top joint (3) and the first skeleton oil seal (22). The waterproof sealing ring (34) is provided with a drainage groove (342) located on the side of the first skeleton oil seal (22) facing the top joint (3) and connected to the housing (2). The waterproof sealing ring (34) is sleeved with a watertight seal located on the drainage groove (342). A second sealing ring (343) is provided on the side of the housing (2); a first deep groove ball bearing (23) and a tapered roller bearing (25) are provided in the housing (2) and are sleeved on the shaft core (1); the first deep groove ball bearing (23) is located between the first skeleton oil seal (22) and the tapered roller bearing (25); a bearing spacer (24) is provided in the housing (2) and is located between the first deep groove ball bearing (23) and the tapered roller bearing (25); an end of the housing (2) away from the top joint (3) is provided with a second skeleton oil seal (26) and a second skeleton oil seal (27) sleeved on the shaft core (1); The second deep groove ball bearing (27) and the second skeleton oil seal (26) are located between the top joint (3) and the second deep groove ball bearing (27); the housing (2) is connected with a fixing ring (5); the shaft core (1) passes through the fixing ring (5); the fixing ring (5) is provided with a third skeleton oil seal (54), a third deep groove ball bearing (55) and a fourth skeleton oil seal (56) which are sequentially sleeved on the shaft core (1); the first sealing ring (33) is a sealing ring made of nitrile material; and the elastic sealing ring (32) is a sealing ring made of ultra-high molecular polyethylene material.

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