CN217582684U

CN217582684U - Novel combined sealing gland for pressurization oil cylinder

Info

Publication number: CN217582684U
Application number: CN202221382601.XU
Authority: CN
Inventors: 韩荣欢; 王翔; 陆敏; 吴明明; 丁浩南
Original assignee: Changzhou Yidun Hydraulic Technology Co ltd
Current assignee: Changzhou Yidun Hydraulic Technology Co ltd
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2022-10-14
Anticipated expiration: 2032-06-06

Abstract

The utility model relates to a novel pressurization is combination gland for hydro-cylinder, including cylinder body and the sealed piston rod that sets up in the cylinder body, the cylinder body includes cylinder body and the sealed gland subassembly that sets up on cylinder body top, the gland subassembly includes gland seat, gland and intermediate seal cover, the lubricated subassembly of oil storage includes sump tank, first oil pipe, second oil pipe and oiling groove, and through setting up the open sealed gland subassembly of components of a whole that can function independently, under the prerequisite of guarantee sealing performance, can quick assembly disassembly, faster change the sealing washer, improved the maintenance efficiency of equipment, through setting up the lubricated subassembly of oil storage, can be when the piston rod moves, form lubricated oil film on the outer wall of piston rod, reduced the wearing and tearing of sealing washer, improved the life of sealing washer, often arrange the air, hot oil has guaranteed the physicochemical characteristic of fluid.

Description

Novel combined sealing gland for pressurizing oil cylinder

The technical field is as follows:

the utility model relates to a vertical mill hydro-cylinder technical field especially relates to novel pressurization is combination gland for hydro-cylinder.

The background art comprises the following steps:

the existing vertical grinding oil cylinder is a traditional sealing structure for a sealing gland at the end part, and is difficult to disassemble when a sealing ring is replaced, so that the time for replacing the sealing ring once is as long as one or two days, the maintenance time of equipment is prolonged, and the capacity of the equipment is reduced.

Under the condition of self weight of the hydraulic cylinder, the hydraulic cylinder can generate transient negative pressure due to the fact that the flow speed of oil from the energy accumulator to the hydraulic cylinder is not fast enough, and air can be oxidized and carbonized with the hydraulic oil to enable the oil to be changed into hot oil, and the physical and chemical properties of the normal oil cannot be achieved.

The utility model has the following contents:

the utility model aims at providing a structural design is reasonable, the convenient novel pressurization is combined sealing gland for hydro-cylinder is changed in the maintenance to prior art's defect.

The utility model discloses a realize through following technical scheme: the utility model provides a novel pressurization is combination gland for hydro-cylinder, includes cylinder body and the sealed piston rod that sets up in the cylinder body, the cylinder body includes cylinder body and the sealed gland subassembly that sets up on cylinder body top, the gland subassembly includes gland seat, gland and middle seal cover, gland seat detachably connects the top at cylinder body, and gland seat one end stretches into cylinder body inner chamber, and gland seat outer wall and the sealed setting of cylinder body have cup jointed middle seal cover in the mounting hole of gland seat, and middle seal cover is located the piston rod outer wall, and the outer wall and the sealed setting of mounting hole of middle seal cover, the bottom of middle seal cover offsets with the spacing ring of mounting hole bottom and leans on, and the top of middle seal cover is less than the top of mounting hole, gland detachably connects on gland seat top, and the bottom of gland extends to in the mounting hole and offsets with middle seal cover top and lean on, and the piston rod outer wall clearance fit's piston rod sliding hole is formed along the axle center direction to the middle seal cover, is provided with piston rod outer wall interference fit's sealing washer subassembly in the piston rod sliding hole.

In order to realize the sliding and sealing of the piston rod in the piston rod sliding hole, the sealing ring assembly comprises an oil seal and a plurality of rectangular sealing rings, the oil seal is embedded into the inner wall of the piston rod sliding hole, and the rectangular sealing rings are uniformly embedded into the inner wall of the piston rod sliding hole.

In order to realize the axial sealing between the gland and the intermediate sealing sleeve, the gland and the intermediate sealing sleeve are sealed by an axial sealing ring.

In order to realize the sealing between the gland seat and the middle sealing platform, a plurality of O-shaped sealing rings are used for sealing between the outer wall of the gland seat and the middle sealing sleeve.

In order to realize forming the lubricating oil film on the outer wall of piston rod, reduce the wearing and tearing of sealing washer and the air and the hot oil discharge in the pneumatic cylinder, the cylinder body is connected with oil storage lubrication assembly, oil storage lubrication assembly includes sump tank, first oil pipe, second oil pipe, sets up the oil filler bowl on the gland inner wall, sets up on the gland outer wall and with the first oil filler point that the oil filler bowl is linked together and set up the second oil filler point that just is linked together with cylinder body inner chamber at cylinder body outer wall, first oil filler point, second oil filler point are connected and are linked together with the inner chamber of sump tank bottom through first oil pipe, second oil pipe respectively.

In order to collect oil overflowing from the oil collecting tank and avoid polluting equipment and the environment around the equipment, the bottom end of the oil collecting tank is connected with an oil return pipe communicated with the inner cavity of the oil collecting tank.

In order to discharge hot oil and air manually, a valve is arranged between the second oil injection hole and the second oil pipe, one end of the valve is in threaded connection with the second oil injection hole, and the other end of the valve is inserted into the second oil pipe.

The beneficial effects of the utility model are that: through setting up the open sealed gland subassembly of components of a whole that can function independently, under the prerequisite of guarantee sealing performance, can quick assembly disassembly, faster change sealing washer has improved the maintenance efficiency of equipment, through setting up the lubricated subassembly of oil storage, can be when the piston rod moves, form the lubricating oil film on the outer wall of piston rod, reduced the wearing and tearing of sealing washer, improved the life of sealing washer, often arrange the air, hot oil has guaranteed the physical and chemical properties of fluid.

Description of the drawings:

fig. 1 is a schematic perspective view of the novel combined sealing gland for the pressurization cylinder of the present invention;

fig. 2 is another perspective view of the novel combined gland for a pressurized cylinder of the present invention;

fig. 3 is an exploded view of the gland assembly of the present invention;

fig. 4 is an assembly structure diagram of the gland assembly of the present invention.

The specific implementation mode is as follows:

the following description of the preferred embodiments of the present invention will be provided with reference to the accompanying drawings, so that the advantages and features of the present invention can be easily understood by those skilled in the art, and the scope of the present invention can be clearly and clearly defined.

The novel combined sealing gland for the pressurization oil cylinder as shown in fig. 1 and fig. 2 comprises a cylinder body 1 and a piston rod 3 which is hermetically arranged in the cylinder body 1, wherein the cylinder body 1 comprises a cylinder body 11 and a sealing gland component 2 which is hermetically arranged at the top end of the cylinder body 11.

As shown in fig. 2-4, the gland assembly 2 includes a gland seat 21, a gland 22 and an intermediate gland 23, the gland seat 21 is detachably connected to the top of the cylinder body 11 through a bolt, one end of the gland seat 21 extends into the inner cavity of the cylinder body 11, the outer wall of the gland seat 21 is hermetically arranged with the cylinder body 11, the intermediate gland 23 is connected in the mounting hole 212 of the gland seat 21 in a sleeved manner, the intermediate gland 23 is sleeved on the outer wall 3 of the piston rod, the outer wall of the intermediate gland 23 is hermetically arranged with the mounting hole 212, the bottom end of the intermediate gland 23 abuts against a limiting ring 213 at the bottom end of the mounting hole 212, the top end of the intermediate gland 23 is lower than the top end of the mounting hole 212, the gland 22 is detachably connected to the top end of the gland seat 21 through a bolt, the bottom end of the gland 22 extends into the mounting hole 212 and abuts against the top end of the intermediate gland 23, a piston rod sliding hole 6 in clearance fit with the outer wall of the piston rod 3 is formed in the axial direction of the gland seat 21, the intermediate gland 23 and the intermediate gland 23, and a sealing ring assembly in the piston rod sliding hole 6 is in interference fit with the outer wall of the piston rod 3.

The sealing ring assembly comprises an oil seal 51 and a plurality of rectangular sealing rings 52, the oil seal 51 is embedded in the inner wall of the piston rod sliding hole 6, and the rectangular sealing rings 52 are uniformly embedded in the inner wall of the piston rod sliding hole 6.

The gland 22 and the intermediate sealing sleeve 23 are sealed by an axial sealing ring 53.

The outer wall of the gland seat 21 is provided with a sealing platform 211 corresponding to the inner diameter of the cylinder body 11, the sealing platform 211 is provided with a sealing ring mounting groove, and the top axis of the cylinder body 11 is provided with a mounting counter bore 212.

The outer wall of the gland seat 21 and the intermediate sealing sleeve 23 are sealed by a plurality of O-shaped sealing rings 54.

In the embodiment, the top end of the inner wall of the intermediate sealing sleeve 23 is provided with a sealing ring mounting table 231, the middle part and the bottom end of the intermediate sealing sleeve 23 are uniformly provided with a plurality of second rectangular sealing ring mounting grooves 232, and the outer wall of the intermediate sealing sleeve 23 is uniformly provided with a plurality of O-shaped sealing mounting grooves 233.

Oil blanket mounting groove 225, oiling groove 224, first rectangle sealing washer mounting groove 226 have been seted up on the inner wall of gland 22 from last to down, second annular boss 222, first annular boss 221 have been seted up to gland seat 21 outer wall bottom from supreme down, the external diameter of first annular boss 221 is corresponding with the diameter of installation counter bore 212, the external diameter of second annular boss 222 is corresponding with the internal diameter of sealing washer mount table 231, form the mounting groove of axial sealing washer 53 between the bottom of second annular boss 222 and the sealing washer mount table 231, all imbed rectangle sealing washer 52 in first rectangle sealing washer mounting groove 226, the second rectangle sealing washer mounting groove 232, oil blanket 51 imbeds in oil blanket mounting groove 225, in O type sealing washer 54 imbeds second rectangle sealing washer mounting groove 232, axial sealing washer 53 imbeds sealing washer mount table 231, the upper and lower both ends of axial sealing washer 53 respectively with the bottom of second annular boss 222, the bottom of sealing washer mount table 231 offsets and leans on, form axial seal.

The cylinder body 1 is connected with oil storage lubrication assembly 4, oil storage lubrication assembly 4 includes sump tank 41, first oil pipe 42, second oil pipe 43, sets up oiling groove 224 on the gland 22 inner wall, sets up on the gland 22 outer wall and the first oil filler point 223 that is linked together with oiling groove 224 and sets up at the second oil filler point 111 that 11 outer walls of cylinder body and be linked together with 11 inner chambers of cylinder body, first oil filler point 223, second oil filler point 111 are connected and are linked together with sump tank 41 bottom through first oil pipe 42, second oil pipe 43 respectively and are linked together with sump tank 41's inner chamber.

The bottom end of the oil collecting tank 41 is connected with an oil return pipe 44 communicated with the inner cavity of the oil collecting tank.

A valve 112 is arranged between the second oil hole 111 and the second oil pipe 43, one end of the valve 112 is in threaded connection with the second oil hole 111, and the other end of the valve 112 is inserted into the second oil pipe 43.

When changing the sealing washer, only need pull down gland subassembly 2 from the cylinder body, pull down gland 22, intermediate seal cover 23 in proper order, change the sealing washer of wearing and tearing, through the open sealing of gland subassembly 2 detachably, improved the change efficiency of sealing washer greatly, also be favorable to pneumatic cylinder fast assembly simultaneously.

When the piston rod 3 moves up and down, the oil in the oil collecting tank 41 is injected into the oil injecting groove 224 through the first oil pipe 42 to lubricate the outer wall of the piston rod 3, so that a layer of oil film is ensured on the outer wall of the piston rod 3, the sealing ring is better protected, and meanwhile, air can be prevented from entering the cylinder.

Air and hot oil in the hydraulic cylinder can be discharged out of the second oil pipe 43 through the second oil filling hole 111, in addition, redundant hydraulic oil in the hydraulic cylinder can be discharged to the main oil tank through the oil return pipe 44, and the sealing ring and the piston rod are effectively protected by frequently discharging the hot oil and the air.

When a user normally uses the hydraulic cylinder, hot oil and air are often discharged into the oil collecting tank 41 arranged above through the manual valve 112 at the exhaust port of the oil cylinder, the oil in the oil collecting tank 41 flows to the low-pressure oil storage tank of the oil cylinder through gravity, and when the liquid level of the oil in the oil collecting tank 5 is high, the oil automatically overflows to the main oil tank through the oil return pipe 44, so that no leakage of the oil is ensured, and the cleanness of equipment and the cleanness of the surrounding environment are ensured.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The utility model provides a novel pressurization is combination gland for hydro-cylinder, includes cylinder body (1) and sealed piston rod (3) of setting in cylinder body (1), cylinder body (1) includes cylinder body (11) and sealed gland subassembly (2) that set up on cylinder body (11) top, its characterized in that: the sealing gland component (2) comprises a gland seat (21), a gland (22) and an intermediate sealing sleeve (23), the gland seat (21) is detachably connected to the top of the cylinder body (11), one end of the gland seat (21) extends into the inner cavity of the cylinder body (11), the outer wall of the gland seat (21) is hermetically arranged with the cylinder body (11), the intermediate sealing sleeve (23) is sleeved in a mounting hole (212) of the gland seat (21), the intermediate sealing sleeve (23) is sleeved on the outer wall of the piston rod (3), the outer wall of the intermediate sealing sleeve (23) is hermetically arranged with the mounting hole (212), the bottom end of the intermediate sealing sleeve (23) abuts against a limiting ring (213) at the bottom end of the mounting hole (212), the top end of the intermediate sealing sleeve (23) is lower than the top end of the mounting hole (212), the gland (22) is detachably connected to the top end of the gland seat (21), the bottom end of the gland (22) extends into the mounting hole (212) and abuts against the top end of the intermediate sealing sleeve (23), the outer wall of the mounting hole (3) forms an interference fit with the outer wall of the piston rod (3) along the direction, and a sealing ring (6) is arranged in the outer wall in a sliding fit with the piston rod (3), and a sealing ring (6) is arranged in the piston rod.

2. The novel combined sealing gland for the pressurization cylinder according to claim 1, characterized in that: the sealing ring assembly comprises an oil seal (51) and a plurality of rectangular sealing rings (52), wherein the oil seal (51) is embedded into the inner wall of the top end of the piston rod sliding hole (6), and the rectangular sealing rings (52) are uniformly embedded into the inner wall of the piston rod sliding hole (6).

3. The novel combined sealing gland for the pressurization cylinder according to claim 1, characterized in that: the gland (22) and the intermediate sealing sleeve (23) are sealed through an axial sealing ring (53).

4. The novel combined sealing gland for the pressurization cylinder according to claim 1, characterized in that: the outer wall of the gland seat (21) and the middle sealing sleeve (23) are sealed through a plurality of O-shaped sealing rings (54).

5. The novel combined sealing gland for the pressurization cylinder according to claim 1, characterized in that: the cylinder body (1) is connected with the lubricated subassembly of oil storage (4), the lubricated subassembly of oil storage (4) include sump oil tank (41), first oil pipe (42), second oil pipe (43), set up oiling groove (224) on gland (22) inner wall, set up on gland (22) outer wall and with first oil filler point (223) that oiling groove (224) are linked together and set up second oil filler point (111) that just are linked together with cylinder body (11) inner chamber at cylinder body (11) outer wall, first oil filler point (223), second oil filler point (111) are connected and are linked together with the inner chamber of sump oil tank (41) through first oil pipe (42), second oil pipe (43) respectively with sump oil tank (41) bottom.

6. The novel combined sealing gland for the pressurization cylinder according to claim 5, characterized in that: the bottom end of the oil collecting tank (41) is connected with an oil return pipe (44) communicated with the inner cavity of the oil collecting tank.

7. The novel combined sealing gland for the pressurization cylinder according to claim 5, characterized in that: a valve (112) is arranged between the second oil hole (111) and the second oil pipe (43), one end of the valve (112) is in threaded connection with the second oil hole (111), and the other end of the valve (112) is inserted into the second oil pipe (43).