CN213176261U

CN213176261U - Vertical mill oil cylinder

Info

Publication number: CN213176261U
Application number: CN202021906936.8U
Authority: CN
Inventors: 黎雄伟
Original assignee: Smk Hydraulic Cylinder Co ltd
Current assignee: Smk Hydraulic Cylinder Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-05-11
Anticipated expiration: 2030-09-04

Abstract

The utility model discloses a vertical mill oil cylinder, which comprises a cylinder barrel, a piston rod, a piston, a cylinder bottom, a guide sleeve and an ear ring; the piston rod is arranged inside the cylinder barrel, the left end of the piston rod is connected with the piston, and the right end of the piston rod extends rightwards to be provided with a drum-shaped connector; the right end of the cylinder bottom is connected with the left end of the cylinder barrel, the left end of the cylinder bottom is connected with an ear ring, the ear ring comprises a circular lifting lug and a trapezoidal lifting lug, a rectangular middle hole is formed in the inner periphery of the trapezoidal lifting lug, the left end of the trapezoidal lifting lug is connected with the circular lifting lug, a circular middle hole is formed in the inner periphery of the circular lifting lug, a circular ring-shaped ferrule is arranged in the circular middle hole, and the circular ring-shaped ferrule can freely rotate relative to the circular; the first oil hole is formed in the cylinder bottom, and the second oil hole is formed in the right end of the cylinder; the guide sleeve is sleeved on the periphery of the piston. The utility model has the advantages of simple integral structure, high grinding efficiency, high safety, high sealing performance, stable operation, high reliability and free rotation.

Description

Vertical mill oil cylinder

Technical Field

The utility model relates to a pneumatic cylinder technical field, in particular to vertical mill hydro-cylinder.

Background

The vertical mill is an ideal large-scale grinding device and is widely applied to the industries of cement, electric power, metallurgy, chemical industry, non-metal ore and the like. It integrates crushing, drying, grinding and grading conveying into a whole, has high production efficiency, and can grind blocky, granular and powdery raw materials into required powdery materials. In recent years, with the great improvement of the research and development technology of the grinding machine, the vertical grinding technology of domestic grinding mill production enterprises is becoming mature day by day, and the technical advantages of the vertical grinding products are increasingly prominent. With the development of the vertical mill industry in China, the technical bottleneck is broken through, and the vertical mill is used for replacing the ball mill in more and more fields.

The vertical mill is a grinding mechanism which utilizes a hydraulic mechanism to lift, insert or translate left and right to drive a grinding disc to rotate, and a vertical mill oil cylinder has the following defects when providing power: the loss power is large, the grinding direction is disordered, the working efficiency is low, the quality of the vertical mill is seriously influenced, and the requirements of modern production cannot be met.

The existing vertical mill oil cylinder has the advantages that as the guide sleeve and the cylinder body are not concentric, in the process of processing and installing stroke, the threaded connection is loose, and particularly has gaps, so that the guide sleeve threads are easy to damage the static sealing ring, and the looseness and the gaps directly influence the sealing property, so that the oil leakage phenomenon is easy to occur, the poor sealing property causes the poor stability of the vertical mill, and the service life of the vertical mill oil cylinder is greatly reduced.

The existing vertical mill oil cylinder has the following defects in the use process: the vibration and pause are generated during the operation, the operation is not stable, meanwhile, the stability of the piston rod is poor, and the phenomena of bending, deformation and even breakage often occur during the use; the oil cylinder is not easy to fix and can not rotate freely in the working process, the working efficiency is low, the working quality is difficult to ensure, and the like.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is according to the not enough of above-mentioned prior art, provide a simple structure, grinding efficiency height, security height, leakproofness height, operate steadily, the reliability is high, can free rotation's vertical mill hydro-cylinder.

In order to solve the technical problem, the technical scheme of the utility model is that: a vertical grinding oil cylinder comprises a cylinder barrel, a piston rod, a piston, a cylinder bottom, a guide sleeve and an ear ring; the piston rod is arranged inside the cylinder barrel, the left end of the piston rod is connected with the piston, the right end of the piston rod extends to the right outside the cylinder barrel, and the right end of the piston rod is provided with a drum-shaped connector; the right end of the cylinder bottom is connected with the left end of the cylinder barrel, the left end of the cylinder bottom is connected with an ear ring, the ear ring comprises a circular lifting lug and a trapezoidal lifting lug, a rectangular middle hole is formed in the inner periphery of the trapezoidal lifting lug, the left end of the trapezoidal lifting lug is connected with the circular lifting lug, the right end of the trapezoidal lifting lug is connected with the cylinder bottom, a circular middle hole is formed in the inner periphery of the circular lifting lug, a circular ring-shaped ferrule is arranged in the circular middle hole, and the circular ring-shaped; the cylinder bottom is provided with a first oil hole penetrating through the cylinder barrel, the right end of the cylinder barrel is provided with a second oil hole penetrating through the cylinder barrel, and the first oil hole and the second oil hole are used for the inlet and outlet of hydraulic oil so as to push the piston to drive the piston rod to move left and right; the guide sleeve is sleeved on the periphery of the piston and located between the piston and the inner wall of the cylinder barrel, and is used for guiding the piston and the piston rod to move left and right in the cylinder barrel and sealing hydraulic oil on the left side and the right side of the piston to prevent leakage.

As to the utility model discloses a further explanation:

preferably, the first oil hole and the second oil hole comprise two oil holes, and the center distances of the two first oil holes and the two second oil holes are equal and are 42 mm-55 mm respectively.

Preferably, the left end of drum type connector is equipped with strong muscle portion, strong muscle portion is used for strengthening the joint strength of piston rod drum type connector.

Preferably, the guide sleeve comprises a first dustproof sealing ring, a second dustproof sealing ring, a guide belt, a piston support ring, a guide belt, a piston sealing ring and a guide belt from left to right in sequence, and the number of the guide belts at the right end of the piston sealing ring is two.

Preferably, the first dustproof sealing ring and the second dustproof sealing ring are O-shaped sealing rings or Y-shaped sealing rings.

Preferably, the right end of the cylinder barrel is provided with a gland, the piston rod penetrates through the gland to extend rightwards, and the gland extends leftwards to the right end of the piston.

Preferably, the gland and the cylinder bottom are respectively fixed on the left side and the right side of the cylinder barrel through 20-28 inner hexagon screws.

Preferably, the socket head cap screw is a 24-M16 socket head cap screw.

Preferably, the right end of the cylinder bottom is provided with an ear ring supporting part, the right end of the trapezoidal lifting lug is connected with the ear ring supporting part, and the cylinder bottom, the ear ring supporting part, the circular lifting lug and the trapezoidal lifting lug are of an integrated structure.

Preferably, the diameter of the cylinder barrel of the oil cylinder is 440-465 mm, the diameter of the piston rod is 295-305 mm, the working stroke of the piston is 195-210 mm, the inner diameter of the drum-shaped connector is 105-110 mm, the diameter of the circular middle hole formed in the inner periphery of the circular lifting lug is 125-140 mm, the working pressure of the oil cylinder is 12-16 MPa, and the testing pressure is 20-25 MPa.

The utility model has the advantages that: the utility model comprises a cylinder barrel, a piston rod, a piston, a cylinder bottom, a guide sleeve and an ear ring, wherein the right end of the piston rod is provided with a drum-shaped connector, the strength of the drum-shaped connector is stronger than that of a common connector, the left end of the drum-shaped connector is provided with a strong rib part which is used for enhancing the connection strength of the drum-shaped connector of the piston rod, the defects of poor stability of the piston rod, frequent bending, deformation and even breakage in use in the prior art are overcome, and the safety is high; the cylinder bottom, the lug support part, the circular lifting lug and the trapezoidal lifting lug are of an integrated structure, and the defects that an oil cylinder is not easy to fix, cannot rotate freely, the operation efficiency is low and the operation quality is difficult to guarantee in the working process in the prior art are overcome; the two first oil holes and the two second oil holes are equal in center distance, and compared with a large-diameter oil hole, the hydraulic oil circulation is smoother on the premise of ensuring the flow of hydraulic oil, so that the piston rod moves more stably in the cylinder barrel in the left-right direction, and the whole cylinder barrel is more stable; the uide bushing includes first dust seal, second dust seal, guidance tape, piston support ring, guidance tape, piston seal and guidance tape from a left side to the right side in proper order, the guidance tape of piston seal right-hand member includes two, and the uide bushing prevents that the piston rod from taking place the skew at the action in-process, has improved the stationarity of hydro-cylinder work, and the high phenomenon that does not have the oil leak of leakproofness, and shock resistance ability is high, is not afraid of the vibration, in the vertical grinding operation that does not need or be not convenient for large-scale hydro-cylinder operation, has played important effect, the utility model discloses overall structure is simple, grinding efficiency is high, the security is high, the leakproofness is high, the operation is steady, the reliability is high, can.

Drawings

Fig. 1 is an overall structure diagram of the present invention.

Fig. 2 is a right side view of the present invention.

In the figure: 1. a cylinder barrel; 2. a piston rod; 3. a cylinder bottom; 4. a drum-shaped connector; 5. a circular lifting lug; 6. a trapezoidal lifting lug; 7. a circular ring-shaped ferrule; 8. a first oil hole; 9. a second oil hole; 10. a reinforcing rib part; 11. a first dust seal ring; 12. a second dust seal ring; 13. a guide belt; 14. a piston support ring; 15. a piston seal ring; 16. a gland; 17. a socket head cap screw; 18. an earring support.

Detailed Description

The structure and operation of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the utility model relates to a vertical mill oil cylinder, which comprises a cylinder barrel 1, a piston rod 2, a piston (not shown in the figure), a cylinder bottom 3, a guide sleeve and an ear ring; the piston rod 2 is arranged inside the cylinder barrel 1, the left end of the piston rod 2 is connected with the piston, the right end of the piston rod 2 extends to the right outside the cylinder barrel 1, and the right end of the piston rod 2 is provided with a drum-shaped connector 4; the right end of the cylinder bottom 3 is connected with the left end of the cylinder barrel 1, the left end of the cylinder bottom is connected with an ear ring, the ear ring comprises a circular lifting lug 5 and a trapezoidal lifting lug 6, a rectangular middle hole is formed in the inner periphery of the trapezoidal lifting lug 6, the left end of the trapezoidal lifting lug 6 is connected with the circular lifting lug 5, the right end of the trapezoidal lifting lug is connected with the cylinder bottom 3, a circular middle hole is formed in the inner periphery of the circular lifting lug 5, a circular ring-shaped ferrule 7 is arranged in the circular middle hole, and the circular ring-shaped ferrule; the cylinder bottom 3 is provided with a first oil hole 8 penetrating through the cylinder barrel 1, the right end of the cylinder barrel 1 is provided with a second oil hole 9 penetrating through the cylinder barrel 1, and the first oil hole 8 and the second oil hole 9 are used for the inlet and outlet of hydraulic oil so as to push the piston to drive the piston rod 2 to move left and right; the guide sleeve is sleeved on the periphery of the piston, is positioned between the piston and the inner wall of the cylinder barrel 1 and is used for guiding the piston and the piston rod 2 to move left and right in the cylinder barrel 1 and sealing hydraulic oil on the left side and the right side of the piston to prevent leakage.

As shown in FIG. 1, the first oil hole 8 and the second oil hole 9 are two, and the center distances of the two first oil holes 8 and the two second oil holes 9 are equal and are 42mm to 55 mm. In this embodiment, the center distances of the two first oil holes 8 and the two second oil holes 9 are both 50 mm.

As shown in fig. 1 and 2, a reinforcing rib portion 10 is disposed at the left end of the drum-shaped connector 4, and the reinforcing rib portion 10 is used for enhancing the connection strength of the drum-shaped connector 4 of the piston rod 2.

As shown in fig. 1, the guide sleeve sequentially comprises a first dust-proof sealing ring 11, a second dust-proof sealing ring 12, a guide belt 13, a piston support ring 14, a guide belt 13, a piston sealing ring 15 and a guide belt 13 from left to right, and the number of the guide belts 13 at the right end of the piston sealing ring 15 is two.

Further, the first dust seal ring 11 and the second dust seal ring 12 are O-shaped seal rings or Y-shaped seal rings. In this embodiment, the first dust seal 11 is an O-ring, and the second dust seal 12 is a Y-ring.

As shown in fig. 1, a gland 16 is provided at the right end of the cylinder barrel 1, the piston rod 2 extends through the gland 16 to the right, and the gland 16 extends to the right end of the piston to the left.

As shown in fig. 1 and 2, the gland 16 and the cylinder bottom 3 are fixed to the left and right sides of the cylinder tube 1 by 20 to 28 socket head cap screws 17, respectively. The socket head cap screw 17 is a 24-M16 socket head cap screw 17. In this embodiment, the gland 16 and the cylinder bottom 3 are fixed to the left and right sides of the cylinder tube 1 by 24 socket head cap screws 17, respectively.

As shown in fig. 1, an ear ring support portion 18 is arranged at the right end of the cylinder bottom 3, the right end of the trapezoidal lifting lug 6 is connected with the ear ring support portion 18, and the cylinder bottom 3, the ear ring support portion 18, the circular lifting lug 5 and the trapezoidal lifting lug 6 are of an integrated structure.

Furthermore, the diameter of the cylinder barrel 1 of the oil cylinder is 440-465 mm, the diameter of the piston rod 2 of the oil cylinder is 295-305 mm, the working stroke of the piston is 195-210 mm, the inner diameter of the drum-shaped connector 4 of the oil cylinder is 105-110 mm, the diameter of the circular middle hole formed in the inner periphery of the circular lifting lug 5 of the oil cylinder is 125-140 mm, the working pressure of the oil cylinder is 12-16 MPa, and the test pressure of the oil cylinder is 20-25 MPa. In this embodiment, the diameter of the cylinder barrel 1 of the oil cylinder is 450mm, the diameter of the piston rod 2 of the oil cylinder is 300mm, the working stroke of the piston of the oil cylinder is 200mm, the inner diameter of the drum-shaped connector 4 of the oil cylinder is 110mm, the diameter of the circular central hole formed in the inner periphery of the circular lifting lug 5 of the oil cylinder is 135mm, the working pressure of the oil cylinder is 12Mpa, and the testing pressure of the oil cylinder is 21 Mpa.

In this embodiment, the cylinder barrel 1, the piston rod 2 and the cylinder bottom 3 are all made of 45# steel.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "left end," "right end," "left," "right," etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The above, only the utility model discloses preferred embodiment, all be according to the utility model discloses a technical scheme does any slight modification, the equivalent change and the modification to above embodiment, all belong to the utility model discloses technical scheme's within range.

Claims

1. The utility model provides a vertical milling hydro-cylinder which characterized in that: comprises a cylinder barrel, a piston rod, a piston, a cylinder bottom, a guide sleeve and an earring; the piston rod is arranged inside the cylinder barrel, the left end of the piston rod is connected with the piston, the right end of the piston rod extends to the right outside the cylinder barrel, and the right end of the piston rod is provided with a drum-shaped connector; the right end of the cylinder bottom is connected with the left end of the cylinder barrel, the left end of the cylinder bottom is connected with an ear ring, the ear ring comprises a circular lifting lug and a trapezoidal lifting lug, a rectangular middle hole is formed in the inner periphery of the trapezoidal lifting lug, the left end of the trapezoidal lifting lug is connected with the circular lifting lug, the right end of the trapezoidal lifting lug is connected with the cylinder bottom, a circular middle hole is formed in the inner periphery of the circular lifting lug, a circular ring-shaped ferrule is arranged in the circular middle hole, and the circular ring-shaped; the cylinder bottom is provided with a first oil hole penetrating through the cylinder barrel, the right end of the cylinder barrel is provided with a second oil hole penetrating through the cylinder barrel, and the first oil hole and the second oil hole are used for the inlet and outlet of hydraulic oil so as to push the piston to drive the piston rod to move left and right; the guide sleeve is sleeved on the periphery of the piston and located between the piston and the inner wall of the cylinder barrel, and is used for guiding the piston and the piston rod to move left and right in the cylinder barrel and sealing hydraulic oil on the left side and the right side of the piston to prevent leakage.

2. The vertical mill cylinder according to claim 1, characterized in that: the first oil hole and the second oil hole are respectively provided with two oil holes, and the center distances of the two first oil holes and the two second oil holes are equal and are 42-55 mm.

3. The vertical mill cylinder according to claim 1, characterized in that: the left end of the drum-shaped connector is provided with a strong rib part, and the strong rib part is used for enhancing the connection strength of the drum-shaped connector of the piston rod.

4. The vertical mill cylinder according to claim 1, characterized in that: the guide sleeve sequentially comprises a first dust seal ring, a second dust seal ring, a guide belt, a piston support ring, a guide belt, a piston seal ring and a guide belt from left to right, and the guide belt at the right end of the piston seal ring comprises two guide belts.

5. The vertical mill oil cylinder according to claim 4, characterized in that: the first dustproof sealing ring and the second dustproof sealing ring are O-shaped sealing rings or Y-shaped sealing rings.

6. The vertical mill cylinder according to claim 1, characterized in that: the right end of the cylinder barrel is provided with a gland, the piston rod penetrates through the gland to extend rightwards, and the gland extends leftwards to the right end of the piston.

7. The vertical mill oil cylinder according to claim 6, characterized in that: the gland and the cylinder bottom are respectively fixed on the left side and the right side of the cylinder barrel through 20-28 socket head cap screws.

8. The vertical mill cylinder according to claim 7, characterized in that: the socket head cap screw is a 24-M16 socket head cap screw.

9. The vertical mill cylinder according to any one of claims 1 to 7, characterized in that: the cylinder bottom is characterized in that an ear ring supporting part is arranged at the right end of the cylinder bottom, the right end of the trapezoidal lifting lug is connected with the ear ring supporting part, and the cylinder bottom, the ear ring supporting part, the circular lifting lug and the trapezoidal lifting lug are of an integrated structure.

10. The vertical mill cylinder according to claim 9, characterized in that: the diameter of the cylinder barrel of the oil cylinder is 440-465 mm, the diameter of the piston rod is 295-305 mm, the working stroke of the piston is 195-210 mm, the inner diameter of the drum-shaped connector is 105-110 mm, the diameter of the circular middle hole formed in the inner periphery of the circular lifting lug is 125-140 mm, the working pressure of the oil cylinder is 12-16 MPa, and the testing pressure is 20-25 MPa.