CN213981448U

CN213981448U - Pneumatic element with good sealing effect

Info

Publication number: CN213981448U
Application number: CN202023181336.2U
Authority: CN
Inventors: 陈志明; 潘玉帝
Original assignee: Wuhu Minghao Electromechanical Equipment Co ltd
Current assignee: Wuhu Minghao Electromechanical Equipment Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-08-17
Anticipated expiration: 2030-12-25

Abstract

The utility model relates to a pneumatic element technical field just discloses a sealed effectual pneumatic element, the power distribution cylinder comprises a cylinder body, the upper end threaded connection of cylinder body has the upper cover, the guiding hole has been seted up to the upper end of upper cover, the inside sliding connection of guiding hole has the piston rod, inside from last to being located the outside dustproof sealing washer and the first sealing washer of piston rod of fixedly connected with down in proper order of guiding hole, the lower extreme fixedly connected with of upper cover is located the outside first spring of piston rod, the lower extreme fixedly connected with piston of piston rod. This sealed effectual pneumatic element possesses the leakproofness and advantages such as strong and the bearing capacity is strong, has solved current piston leakproofness and has mainly sealed with the cylinder inner wall pressfitting by the elasticity of sealing washer self, and when cylinder load was great, the elasticity of sealing washer self was not enough to produce sufficient pressure, leads to piston gas leakage, the problem of the bearing capacity of serious restriction cylinder.

Description

Pneumatic element with good sealing effect

Technical Field

The utility model relates to a pneumatic element technical field specifically is a sealed effectual pneumatic element.

Background

The pneumatic element is an element for doing work by the pressure or force generated by expansion of gas, i.e. a machine member for converting the elastic energy of compressed air into kinetic energy, such as a cylinder, a pneumatic motor, a steam engine, etc., and the pneumatic element is a power transmission type and also an energy conversion device for transmitting energy by using the gas pressure.

The air cylinder is the most widely used pneumatic element, and the working principle of the air cylinder is that a piston in the air cylinder is pushed by air pressure to drive a piston rod to move, so that the sealing performance between the piston and the inner wall of the air cylinder is very important to the working efficiency of the air cylinder, but the sealing performance of the existing piston is mainly sealed by pressing the inner wall of the air cylinder with the elasticity of a sealing ring, when the load of the air cylinder is large, the elasticity of the sealing ring is not enough to generate enough pressure, so that the air leakage of the piston is caused, the load capacity of the air cylinder is severely limited, and the pneumatic element with good sealing effect is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a sealed effectual pneumatic element possesses the leakproofness and advantages such as strong and the bearing capacity is strong, has solved current piston leakproofness and has mainly sealed by the elasticity and the cylinder inner wall pressfitting of sealing washer self, and when cylinder load was great, the elasticity of sealing washer self was not enough to produce sufficient pressure, leads to piston gas leakage, the problem of the bearing capacity of serious restriction cylinder.

(II) technical scheme

For the purpose that realizes that above-mentioned leakproofness is strong and bearing capacity is strong, the utility model provides a following technical scheme: a pneumatic element with good sealing effect comprises a cylinder body, wherein the upper end of the cylinder body is in threaded connection with an upper cover, the upper end of the upper cover is provided with a guide hole, the inside of the guide hole is in sliding connection with a piston rod, the inside of the guide hole is fixedly connected with a dustproof sealing ring and a first sealing ring which are positioned outside the piston rod from top to bottom in sequence, the lower end of the upper cover is fixedly connected with a first spring which is positioned outside the piston rod, the lower end of the piston rod is fixedly connected with a piston, the outside of the piston is provided with two positioning grooves, the insides of the two positioning grooves are both movably connected with second sealing rings, the outside of the piston is in threaded connection with four fixing rings which are respectively positioned on the upper side and the lower side of the two second sealing rings, the inside of the piston is provided with two adjusting cavities, and the upper end and the lower end of the piston are both provided with first through holes which are respectively communicated with the two adjusting cavities, two the lateral wall of adjusting the chamber all sets up quantity and is the second through-hole of a plurality of and intercommunication constant head tank, the lower extreme threaded connection of cylinder body has the lower cover, the buffer slot coaxial with the cylinder body is seted up to the upper end of lower cover, the bottom fixedly connected with second spring of buffer slot, the buffer block of piston lower extreme fixedly connected with and buffer slot looks adaptation.

Preferably, first screw thread has been seted up to the inboard of cylinder body, the second screw thread with first screw thread looks adaptation is seted up to the outside of upper cover, the outside fixedly connected with of upper cover is located the first rubber packing ring of cylinder body lateral wall upper end.

Preferably, the inner wall of the guide hole is provided with a limit groove which is positioned in the upper cover and matched with the first sealing ring, and the first sealing ring is fixedly connected with the limit groove.

Preferably, the inner diameter of the first spring is matched with the diameter of the piston rod, and the piston rod are coaxially arranged with the cylinder body.

Preferably, the locating slot is annular, the distance between the upper end and the lower end of the second sealing ring is matched with the distance between the upper wall and the lower wall of the locating slot, the inner diameter of the locating slot is matched with the inner diameter of the second sealing ring, and the outer diameter of the second sealing ring is larger than the outer diameter of the locating slot.

Preferably, the opposite ends of the two upper fixing rings and the opposite ends of the two lower fixing rings respectively press the upper end and the lower end of the two second sealing rings, the outer diameter of the second sealing rings is matched with the inner diameter of the cylinder body, and the outer diameter of the second sealing rings is larger than that of the fixing rings.

Preferably, with a plurality of same regulation chamber intercommunication the second through-hole is annular equidistance and distributes, the third screw thread has been seted up to the inboard of cylinder body, the fourth screw thread with third screw thread looks adaptation is seted up to the outside of lower cover, the outside fixedly connected with of lower cover is located the second rubber packing ring of cylinder body lateral wall lower extreme.

(III) advantageous effects

Compared with the prior art, the utility model provides a sealed effectual pneumatic element possesses following beneficial effect:

this sealed effectual pneumatic element, through setting up the piston, the constant head tank, the second sealing washer, the retainer plate, adjust the chamber, first through-hole and second through-hole, after gaseous entering cylinder body, through first through-hole, it can make the inboard and the gas input end of second sealing washer with pressing to adjust chamber and second through-hole, when power atmospheric pressure increases, the inboard pressure of second sealing washer also can increase in step, just can increase the outside pressure with the cylinder body inner wall of second sealing washer, thereby strengthen the leakproofness, improve load capacity, through setting up first spring, the dashpot, second spring and buffer block, can cushion the impact between piston and upper cover and the lower cover, reduce the damage, and service life is prolonged, through above setting, possess the leakproofness strong and advantage such as load capacity is strong.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a top cross-sectional view of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 1 according to the present invention.

In the figure: 1. a cylinder body; 2. an upper cover; 3. a guide hole; 4. a piston rod; 5. a dustproof sealing ring; 6. a first seal ring; 7. a first spring; 8. a piston; 9. positioning a groove; 10. a second seal ring; 11. a stationary ring; 12. an adjustment chamber; 13. a first through hole; 14. a second through hole; 15. a lower cover; 16. a buffer tank; 17. a second spring; 18. and a buffer block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a pneumatic element with good sealing effect comprises a cylinder body 1, an upper cover 2 is connected to the upper end of the cylinder body 1 through a thread, a first thread is arranged on the inner side of the cylinder body 1, a second thread matched with the first thread is arranged on the outer side of the upper cover 2, a first rubber gasket positioned on the upper end of the side wall of the cylinder body 1 is fixedly connected to the outer side of the upper cover 2, a guide hole 3 is arranged on the upper end of the upper cover 2, a piston rod 4 is slidably connected to the inner portion of the guide hole 3, a dust-proof sealing ring 5 and a first sealing ring 6 are fixedly connected to the inner portion of the guide hole 3 from top to bottom in sequence, a limiting groove positioned in the upper cover 2 and matched with the first sealing ring 6 is arranged on the inner wall of the guide hole 3, the first sealing ring 6 is fixedly connected with the limiting groove, a first spring 7 positioned on the outer portion of the piston rod 4 is fixedly connected to the lower end of the upper cover 2, and a piston 8 is fixedly connected to the lower end of the piston rod 4, the inner diameter of the first spring 7 is matched with the diameter of the piston rod 4, the piston 8 and the piston rod 4 are coaxially arranged with the cylinder body 1, the outer part of the piston 8 is provided with two positioning grooves 9, the inner parts of the two positioning grooves 9 are movably connected with second sealing rings 10, the positioning grooves 9 are annular, the distance between the upper end and the lower end of each second sealing ring 10 is matched with the distance between the upper wall and the lower wall of each positioning groove 9, the inner diameter of each positioning groove 9 is matched with the inner diameter of each second sealing ring 10, the outer diameter of each second sealing ring 10 is larger than the outer diameter of each positioning groove 9, the outer part of the piston 8 is in threaded connection with four fixing rings 11 which are respectively positioned on the upper side and the lower side of each second sealing ring 10, the opposite ends of the two fixing rings 11 on the upper side and the opposite ends of the two fixing rings 11 on the lower side respectively press the upper end and the lower end of each second sealing ring 10, and the outer diameter of each second sealing ring 10 is matched with the inner diameter of the cylinder body 1, the outer diameter of the second sealing ring 10 is larger than that of the fixed ring 11, two adjusting cavities 12 are arranged inside the piston 8, first through holes 13 respectively communicated with the two adjusting cavities 12 are respectively arranged at the upper end and the lower end of the piston 8, a plurality of second through holes 14 communicated with the positioning grooves 9 are respectively arranged on the side walls of the two adjusting cavities 12, the lower end of the cylinder body 1 is in threaded connection with a lower cover 15, a plurality of second through-hole 14 with same regulation chamber 12 intercommunication is annular equidistance and distributes, the third screw thread has been seted up to the inboard of cylinder body 1, the fourth screw thread with third screw thread looks adaptation is seted up to the outside of lower cover 15, the outside fixedly connected with of lower cover 15 is located the second rubber packing ring of 1 lateral wall lower extreme of cylinder body, the buffer slot 16 coaxial with cylinder body 1 has been seted up to the upper end of lower cover 15, the bottom fixedly connected with second spring 17 of buffer slot 16, the buffer block 18 of 8 lower extreme fixedly connected with of piston and 16 looks adaptations of buffer slot.

In summary, the pneumatic component with good sealing effect is provided with the piston 8, the positioning groove 9, the second sealing ring 10, the fixing ring 11, the adjusting cavity 12, the first through hole 13 and the second through hole 14, after the gas enters the cylinder body 1, the inner side of the second sealing ring 10 can be pressed with the gas input end through the first through hole 13, the adjusting cavity 12 and the second through hole 14, when the power gas pressure is increased, the pressure inside the second sealing ring 10 can be synchronously increased, the pressure between the outer part of the second sealing ring 10 and the inner wall of the cylinder body 1 can be increased, so that the sealing property is enhanced, the load capacity is improved, the impact between the piston 8 and the upper cover 2 and the lower cover 15 can be buffered through the arrangement of the first spring 7, the buffer groove 16, the second spring 17 and the buffer block 18, the damage is reduced, the service life is prolonged, the advantages of strong sealing property and strong load capacity are achieved through the arrangement, and the problem that the existing piston sealing property is mainly pressed with the inner wall of the cylinder through the elasticity of the sealing ring is solved, when the load of the cylinder is large, the elasticity of the sealing ring is not enough to generate enough pressure, so that the air leakage of the piston is caused, and the problem of severely limiting the load capacity of the cylinder is solved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a pneumatic element that sealed effectual, includes cylinder body (1), its characterized in that: the upper end of the cylinder body (1) is in threaded connection with an upper cover (2), the upper end of the upper cover (2) is provided with a guide hole (3), the inside of the guide hole (3) is in sliding connection with a piston rod (4), the inside of the guide hole (3) is fixedly connected with a dustproof sealing ring (5) and a first sealing ring (6) which are positioned outside the piston rod (4) from top to bottom in sequence, the lower end of the upper cover (2) is fixedly connected with a first spring (7) which is positioned outside the piston rod (4), the lower end of the piston rod (4) is fixedly connected with a piston (8), the outside of the piston (8) is provided with two positioning grooves (9), the insides of the two positioning grooves (9) are movably connected with second sealing rings (10), the outside of the piston (8) is in threaded connection with four fixing rings (11) which are respectively positioned on the upper side and the lower side of the two second sealing rings (10), the utility model discloses a cylinder, including piston (8), regulation chamber (12) that quantity is two are seted up to the inside of piston (8), the last lower extreme of piston (8) has all been seted up and has been communicated two respectively first through-hole (13) of regulation chamber (12), two second through-hole (14) that quantity is a plurality of and intercommunication constant head tank (9) are all seted up to the lateral wall of regulation chamber (12), the lower extreme threaded connection of cylinder body (1) has lower cover (15), buffer tank (16) coaxial with cylinder body (1) are seted up to the upper end of lower cover (15), the bottom fixedly connected with second spring (17) of buffer tank (16), buffer block (18) of piston (8) lower extreme fixedly connected with and buffer tank (16) looks adaptation.

2. A pneumatic component with improved sealing as claimed in claim 1, wherein: first screw thread has been seted up to the inboard of cylinder body (1), the outside of upper cover (2) is seted up with the second screw thread of first screw thread looks adaptation, upper cover (2) outside fixedly connected with is located the first rubber packing ring of cylinder body (1) lateral wall upper end.

3. A pneumatic component with improved sealing as claimed in claim 1, wherein: the inner wall of the guide hole (3) is provided with a limit groove which is positioned in the upper cover (2) and matched with the first sealing ring (6), and the first sealing ring (6) is fixedly connected with the limit groove.

4. A pneumatic component with improved sealing as claimed in claim 1, wherein: the inner diameter of the first spring (7) is matched with the diameter of the piston rod (4), and the piston (8) and the piston rod (4) are coaxially arranged with the cylinder body (1).

5. A pneumatic component with improved sealing as claimed in claim 1, wherein: the locating groove (9) is annular, the distance between the upper end and the lower end of the second sealing ring (10) and the distance between the upper wall and the lower wall of the locating groove (9) are matched, the inner diameter of the locating groove (9) is matched with the inner diameter of the second sealing ring (10), and the outer diameter of the second sealing ring (10) is larger than that of the locating groove (9).

6. A pneumatic component with improved sealing as claimed in claim 1, wherein: the opposite ends of the two fixing rings (11) on the upper side and the opposite ends of the two fixing rings (11) on the lower side respectively press the upper end and the lower end of the two second sealing rings (10), the outer diameter of each second sealing ring (10) is matched with the inner diameter of the cylinder body (1), and the outer diameter of each second sealing ring (10) is larger than the outer diameter of each fixing ring (11).

7. A pneumatic component with improved sealing as claimed in claim 1, wherein: with a plurality of same regulation chamber (12) intercommunication second through-hole (14) are annular equidistance and distribute, the third screw thread has been seted up to the inboard of cylinder body (1), the fourth screw thread with third screw thread looks adaptation is seted up to the outside of lower cover (15), lower cover (15) outside fixedly connected with is located the second rubber packing ring of cylinder body (1) lateral wall lower extreme.