Strong-sealing air cylinder

Abstract

The utility model discloses a strong sealing cylinder, which relates to the technical field of cylinders, and comprises a cylinder body, a sealing cover, a sponge and a dustproof ring, the bottom of the cylinder body is provided with a base through bolts, the base is used for sealing one end of the bottom of the cylinder body, and one end of the top of the cylinder body is provided with a top cover. The air cylinder is provided with the sealing cover in the operation process, so that external dust is effectively prevented from invading the contact surface between the piston rod and the top cover; the piston makes contact with the sponge in the telescopic motion, lubricating oil in the sponge is evenly smeared on the outer wall of the piston rod, external lubrication is achieved, and friction between the piston rod and the top cover is reduced. A dustproof ring is arranged in a hole groove in the top of the sealing cover, redundant lubricating oil is reserved in the cover, oil leakage is prevented, meanwhile, the surface of the piston rod is cleaned when the piston rod stretches out and draws back, and dust accumulation is avoided; the sealing cover is in threaded connection with the top cover, thereby being convenient to disassemble and clean.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of air cylinder, concretely is a kind of strong sealing air cylinder. BACKGROUND

[0002] Air cylinder is a kind of common pneumatic control element, and the piston inside is pushed by the air cavity of both ends to reach the movement of piston rod, by searching, the patent of Chinese patent publication No.CN222121925U discloses a kind of air cylinder sealing structure, although the structure solves the problem that sealing ring of current air cylinder is extruded by cylinder inner wall for a long time, is prone to cause sealing ring hardening aging, causes sealing ring failure, but the contact surface between the end cover of the air cylinder and piston rod is easily invaded by external dust, under the action of dust particles, further cause the friction between end cover and piston rod to increase, increase the wear of the outer wall of piston rod, shorten the service life of piston rod. UTILITY MODEL CONTENTS

[0003] In view of the deficiencies of prior art, the utility model provides a kind of strong sealing air cylinder, solve the problem that the contact surface between the end cover of air cylinder and piston rod is easily invaded by external dust in background art, increase the wear of the outer wall of piston rod, shorten the service life of piston rod.

[0004] To achieve the above object, the utility model is realized by the following technical scheme: a kind of strong sealing air cylinder, including air cylinder body, sealing cover, sponge and dustproof ring, the bottom of air cylinder body is equipped with base by bolt, the base is used to seal one end of air cylinder body bottom, the top of air cylinder body is provided with top cover, the top cover is connected with air cylinder body by bolt, the top cover top is provided with sealing cover, the sealing cover bottom is connected with top cover by screw thread, the sealing cover inside is provided with sponge, the sponge is sleeved on the outside of piston rod, the outer wall of piston rod and the inner wall of top cover slide contact, the piston block is sleeved on the outside of one end of piston rod bottom.

[0005] Preferably, the piston block is provided with two annular grooves on the outside, and a sealing ring is embedded in each annular groove, the sealing ring is made of rubber, and the two sealing rings facilitate the storage of lubricating oil on the outer wall of the piston block.

[0006] Preferably, the sponge is immersed in lubricating oil, the bottom of the sponge is tightly attached to the top surface of the top cover, and a hole groove is provided on the outside of the sealing cover and communicates with the inside, and the hole groove is threadedly connected with the stud, by removing the stud, the inside of the sealing cover can be easily lubricated through the hole groove.

[0007] Preferably, the sealing cover is made of stainless steel, a plurality of annular grooves are formed in the inner wall of the circular hole groove at the top of the sealing cover, and a dustproof ring is embedded in the annular grooves, the dustproof ring is made of rubber, and the excess lubricating oil on the surface of the piston rod can be retained in the sealing cover under the action of the dustproof ring in the hole groove at the top of the sealing cover, so that the lubricating oil in the sealing cover is prevented from seeping out.

[0008] Preferably, grooves are arranged between the two sealing rings on the outer wall of the piston block, the grooves are annularly and equidistantly distributed, and the grooves are filled with lubricating oil.

[0009] The utility model provides a kind of strong sealing cylinder.It has the following beneficial effects:

[0010] (1), the strong sealing cylinder, the sealing cover is equipped in the operation process of the cylinder, effectively insulates the contact surface between piston rod and top cover from external dust invasion;Piston is contacted with sponge in telescopic motion, and the lubricating oil in sponge is evenly applied to the outer wall of piston rod, realizes external lubrication, reduces the friction between piston rod and top cover;Dustproof ring is arranged in the hole groove at the top of sealing cover, and excess lubricating oil is retained in cover, to prevent oil exosmosis, clean the surface of piston rod when it is telescoped, to avoid dust accumulation;Sealing cover and top cover are connected by screw thread, easy to disassemble and clean.

[0011] (2), the strong sealing cylinder, the cavity in the outer wall of piston block is filled with lubricating oil, which is annularly and equidistantly distributed, and the lubricating oil on the outer wall of piston block will contact the inner wall of cylinder body in the process of sliding, thereby facilitating the reduction of friction between piston block and inner wall of cylinder body, and the lubricating oil on the outer wall of piston block can be stored in the cavity of outer wall under the action of two sealing rings.

[0012] Thus, the problem of the contact surface between the end cover and the piston rod of the cylinder being easily invaded by external dust, increasing the wear of the outer wall of the piston rod and shortening the service life of the piston rod is solved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole structure schematic diagram of the utility model;

[0014] Figure 2 It is an internal structure schematic diagram of the utility model;

[0015] Figure 3 It is a top cover structure schematic diagram of the utility model;

[0016] Figure 4 is a schematic view of the sealing cover structure of the utility model;

[0017] Figure 5 is a schematic view of the piston block structure of the utility model.

[0018] In the figure, 1, cylinder body; 2, base; 3, top cover; 4, sealing cover; 5, piston rod; 6, piston block; 7, sealing ring; 8, sponge; 9, tight bolt; 10, dust ring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Embodiment 1:

[0021] Please refer to Figures 1-5The utility model discloses an embodiment provides a technical scheme: a strong sealing cylinder, including cylinder body 1, seal cover 4, sponge 8 and dustproof ring 10, the bottom of cylinder body 1 is installed with base 2 through bolt, and the base 2 is used for the sealing of cylinder body 1 bottom one end, and the top one end of cylinder body 1 is provided with top cover 3, and the top cover 3 is connected with cylinder body 1 through bolt, and the top cover 3 top is provided with seal cover 4, and the bottom of seal cover 4 is connected with top cover 3 screw thread, and the inside of seal cover 4 is provided with sponge 8, and the sponge 8 is sleeved on the outside of piston rod 5, and piston rod 5 outer wall and top cover 3 inner wall sliding contact, and the bottom one end of piston rod 5 is externally sleeved with piston block 6, and the inside of sponge 8 is immersed with lubricating oil, and the bottom of sponge 8 and top cover 3 top surface are closely combined, and the outside of seal cover 4 is provided with hole groove and inside communication, and hole groove inside and tight bolt 9 screw thread are connected, and seal cover 4 is stainless steel material, and the inside wall of circular hole groove of seal cover 4 top is provided with a plurality of annular grooves, and dustproof ring 10 is embedded in the inside of annular groove, and dustproof ring 10 is rubber material, when the cylinder is used, the outside is provided with seal cover 4, and then effectively insulates the contact surface between the outside dust and piston rod 5 and top cover 3, and the piston is contacted with sponge 8 in the process of stretching and contracting, and then the lubricating oil in the inside of sponge 8 can be applied on the surface of piston rod 5 outer wall, and then the effect of lubricating the outside of piston rod 5 is played, thereby reducing the friction between piston rod 5 and top cover 3, keeping the better sealing of cylinder, in addition, under the effect of dustproof ring 10 of seal cover 4 top hole groove, the excess lubricating oil on the surface of piston rod 5 can be kept in the inside of seal cover 4, which is favorable for avoiding the seepage of lubricating oil in the inside of seal cover 4, and dustproof ring 10 can play the effect of cleaning the surface of piston rod 5 in the process of stretching and contracting, avoiding the attachment of more dust on the surface of piston rod 5, and seal cover 4 and top cover 3 are connected through screw thread, which is convenient for dismounting and cleaning.

[0022] Embodiment 2:

[0023] The utility model discloses an embodiment provides a technical scheme: a strong sealing cylinder, piston block 6 outside is provided with two annular grooves, and two annular grooves inside are embedded with seal ring 7, and seal ring 7 is rubber material, and the recess of two seal rings 7 between piston block 6 outer wall is provided with, and the recess is annular equidistance shape distribution, and the recess inside is filled with lubricating oil, and through the cavity inside the piston block outer wall of annular equidistance shape distribution is filled with lubricating oil, and through the cavity inside the piston block 6 outer wall of annular equidistance shape distribution is filled with lubricating oil, in the process of sliding, the lubricating oil of piston block 6 outer wall will be contacted with cylinder body 1 inner wall, and then it is favorable for reducing the friction between piston block 6 and cylinder body 1 inner wall, and simultaneously under the effect of two seal rings 7, it is favorable for the lubricating oil of piston block 6 outer wall can be stored in the cavity of outer wall.

[0024] The basic principle and main features of the present application and the advantages of the present application are shown and described above. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0025] In addition, it should be understood that, although the present application is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A strong sealing cylinder, characterized by: Including cylinder body (1), sealing cover (4), sponge (8) and dustproof ring (10), the bottom of the cylinder body (1) is provided with a base (2) through bolt installation, the base (2) is used for sealing the bottom of the cylinder body (1) one end, the top of the cylinder body (1) one end is provided with a top cover (3), the top cover (3) is connected with the cylinder body (1) through bolt, the top cover (3) top is provided with sealing cover (4), the sealing cover (4) bottom is connected with the top cover (3) thread, the sealing cover (4) is provided with sponge (8) inside, the sponge (8) is sleeved on the outside of the piston rod (5), the piston rod (5) outer wall and the inner wall of the top cover (3) are in sliding contact, the piston rod (5) bottom one end outside is sleeved with piston block (6).

2. A strong sealing cylinder as claimed in claim 1, wherein: The piston block (6) is provided with two annular grooves, and the two annular grooves are embedded with sealing ring (7), and the sealing ring (7) is made of rubber material.

3. A strong seal cylinder as claimed in claim 1, wherein: The inside of the sponge (8) is immersed in lubricating oil, the bottom of the sponge (8) is closely attached to the top surface of the top cover (3), the outer side of the sealing cover (4) is provided with a hole groove in communication with the inside, and the hole groove is threadedly connected with the stud bolt (9) inside.

4. A strong seal cylinder as claimed in claim 1, wherein: The sealing cover (4) is made of stainless steel material, a plurality of annular grooves are formed in the inner wall of the circular hole groove on the top of the sealing cover (4), and the dustproof ring (10) is embedded in the annular groove, and the dustproof ring (10) is made of rubber material.

5. A strong seal cylinder as claimed in claim 1, wherein: The outer wall of the piston block (6) is provided with a groove between the two sealing rings (7), the groove is annular and equidistant, and the groove is filled with lubricating oil.

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