CN203214277U - Piston structure of gas compressor - Google Patents

Piston structure of gas compressor Download PDF

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Publication number
CN203214277U
CN203214277U CN 201320233809 CN201320233809U CN203214277U CN 203214277 U CN203214277 U CN 203214277U CN 201320233809 CN201320233809 CN 201320233809 CN 201320233809 U CN201320233809 U CN 201320233809U CN 203214277 U CN203214277 U CN 203214277U
Authority
CN
China
Prior art keywords
plug
step hole
screw plug
sleeve body
hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201320233809
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Chinese (zh)
Inventor
沈燕榕
代碧明
欧建明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhisheng Chemical Industrial Co Ltd
Original Assignee
Zhisheng Chemical Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhisheng Chemical Industrial Co Ltd filed Critical Zhisheng Chemical Industrial Co Ltd
Priority to CN 201320233809 priority Critical patent/CN203214277U/en
Application granted granted Critical
Publication of CN203214277U publication Critical patent/CN203214277U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a piston structure of a gas compressor, which comprises a piston body and a cover screw plug and is characterized in that a central three-level step hole with large outside and small inside is formed in the cover screw plug, wherein the outer-section step hole of the cover screw plug is provided with an internal thread. The piston structure is also provided with a cylindrical pressure relief screw plug, wherein an external thread is arranged on the outer circle of the pressure relief screw plug; a step hole is formed in the pressure relief screw plug; the inner-section step hole of the pressure relief screw plug has the same diameter as the middle-section step hole of the cover screw plug; and the outer-section step hole of the pressure relief screw plug has the same diameter as the inner-section step hole of the cover screw plug. The piston structure is also provided with a shaft sleeve body, wherein the inner diameter of the shaft sleeve body is greater than the inner diameter of the inner-section step hole of the cover screw plug; when the pressure relief screw plug is screwed on the internal thread of the cover screw plug, the inner and outer sections of the shaft sleeve body are respectively sleeved on the middle-section step hole of the cover screw plug and the inner-section step hole of the pressure relief screw plug; a steel ball and a compression spring arranged in a central through hole of the shaft sleeve body form a one-way valve; and perforation screws are fixed between the pressure relief screw plug and the cover screw plug and between the cover screw plug and the piston body respectively. The piston structure disclosed by the utility model has the advantages that the fixation is firm without loosening and the piston is protected for normal operation.

Description

A kind of piston structure of gas compressor
Technical field:
The utility model relates to the piston structure of gas compressor structure, particularly a kind of gas compressor.
Background technique:
Piston is the critical component of gas compressor, and in the rugged environment that work in high temperature, high pressure, vibrated and impact, piston product performance quality is directly connected to the performance of compressor.Piston must have good sealing property, and enough strength and stiffness are arranged, and with being connected and locating safe and reliablely of piston rod, it is light that weight is wanted, and reducing reciprocal inertia force, and anufacturability is good.Piston is mainly drum organization in the large and medium-sized double acting compressor, when piston diameter bigger, during casting for weight reduction, usually make hollow structure, have the auxiliary hole of laying core and clear inner molding sand, inside is provided with reinforced rib, and to increase the rigidity of end face, shut with plug is firm in the sand removal hole after the sand removal.Namely existing piston body structure is the annulus discoid body, uniform several rectangular cross-section circular grooves of cylindrical, interior circle is poroid for two-way step, be used for fixedlying connected with piston rod, be provided with toroidal cavity between two-way step hole hole wall and cylindrical, effect is weight reduction, reduces to the requirement of power power, does less idle work.Toroidal cavity is communicated with piston one sidewall by two through holes, is used for the cast cleaning auxiliary hole, is processed into the closure threads hole after the auxiliary hole sand removal, shuts with the capping plug again.And often owing to can form jerk to plug in the long-time back and forth running of piston, make the loosening leakage of plug, in case leak, gas enters in the piston body toroidal cavity, under cyclic force constantly acted on, the gap between plug and the piston only was increasing, thereby increasing is loosening, plug withdraws from, hit cylinder, cause piston to break, damage when serious cylinder.
Summary of the invention:
The objective of the invention is to overcome above-mentioned defective, a kind of piston structure of gas compressor is provided.
Scheme of the present utility model is: comprise piston body, capping plug, it is characterized in that: the capping plug is provided with three grades of step holes of the little central authorities of outer imperial palace, and the outer section of capping plug step hole is provided with internal thread; Other is provided with a columned pressure release plug, pressure release plug cylindrical is the outside thread corresponding to capping plug internal thread, the pressure release plug is provided with outer little interior big step hole, pressure release plug inner segment step hole and capping plug stage casing step hole are isometrical, and pressure release plug outer section step hole and capping plug inner segment step hole are isometrical; Also be provided with a sleeve body, the sleeve body internal diameter is greater than capping plug inner segment step hole internal diameter, after sleeve body cylindrical inner segment is enclosed within capping plug stage casing step hole movingly, the pressure release plug is twisted and to be closed that its inner segment step hole is linked on the outer section of sleeve body cylindrical when being fixed on the capping plug internal thread, simultaneously the sleeve body biend is held out against; The steel ball contact-type applying screens of laying in the sleeve body center through hole is in capping plug inner segment step hole aperture, and sleeve body center through hole compression both ends of the spring face elastic force pressure type pushes up respectively and is attached on steel ball, the pressure release plug inner segment step hole step surface; Between pressure release plug and the capping plug junction of the edges of two sheets of paper screw is arranged fixedly, junction of the edges of two sheets of paper screw is fixedly arranged when the capping plug is installed in piston body closure threads hole equally.
Advantage of the present utility model is: the fixation of capping plug can not become flexible, and the protection piston normally moves.
Description of drawings:
Fig. 1 is the utility model piston body structure schematic representation.
Fig. 2 is the utility model capping plug, pressure release plug composite structure enlarged diagram.
Embodiment:
The utility model comprises piston body 5, capping plug 1, it is characterized in that: capping plug 1 is provided with three grades of step holes of the little central authorities of outer imperial palace, and capping plug 1 an outer section step hole is provided with internal thread; Other is provided with a columned pressure release plug 2, pressure release plug 2 cylindricals are the outside thread corresponding to capping plug 1 internal thread, pressure release plug 2 is provided with outer little interior big step hole, pressure release plug 2 inner segment step holes and capping plug 1 stage casing step hole are isometrical, and pressure release plug 2 outer section step holes and capping plug 1 inner segment step hole are isometrical; Also be provided with a sleeve body 3, sleeve body 3 internal diameters are greater than capping plug 1 inner segment step hole internal diameter, after sleeve body 3 cylindrical inner segments are enclosed within capping plug 1 stage casing step hole movingly, pressure release plug 2 is twisted and is closed that its inner segment step hole is linked on the outer section of sleeve body 3 cylindricals when being fixed on capping plug 1 internal thread, simultaneously sleeve body 3 biends is held out against; The steel ball 4 contact-type applying screens of laying in sleeve body 3 center through hole are in capping plug 1 inner segment step hole aperture, and sleeve body 3 center through hole compression both ends of the spring face elastic force pressure type pushes up respectively and is attached on steel ball 4, the pressure release plug 2 inner segment step hole step surfaces; Between pressure release plug 2 and the capping plug 1 junction of the edges of two sheets of paper screw is arranged fixedly, capping plug 1 is installed in fixedly junction of the edges of two sheets of paper screw equally on the piston body 5 closure threads holes.
Reinforce plug with junction of the edges of two sheets of paper screw, make in its operation vibrations and can not become flexible, in capping plug 1, install the one-way valve that is made up each other by pressure release plug 2, sleeve body 3, steel ball 4, stage clip and various step hole additional, make the pressure of piston body 5 inner spaces of bleeding can be with going into to discharge step-down when cylinder pressure descends, improve the piston operational reliability, prolong piston working life.Rational in infrastructure, easy processing.

Claims (1)

1. the piston structure of a gas compressor comprises piston body (5), capping plug (1), it is characterized in that: capping plug (1) is provided with three grades of step holes of the little central authorities of outer imperial palace, and the outer section of capping plug (1) step hole is provided with internal thread; Other is provided with a columned pressure release plug (2), pressure release plug (2) cylindrical is the outside thread corresponding to capping plug (1) internal thread, pressure release plug (2) is provided with outer little interior big step hole, pressure release plug (2) inner segment step hole and capping plug (1) stage casing step hole are isometrical, and pressure release plug (2) outer section step hole and capping plug (1) inner segment step hole are isometrical; Also be provided with a sleeve body (3), sleeve body (3) internal diameter is greater than capping plug (1) inner segment step hole internal diameter, after sleeve body (3) cylindrical inner segment is enclosed within capping plug (1) stage casing step hole movingly, pressure release plug (2) is twisted and to be closed that its inner segment step hole is linked on the outer section of sleeve body (3) cylindrical when being fixed on capping plug (1) internal thread, simultaneously sleeve body (3) biend is held out against; Steel ball (4) the contact-type applying screens of laying in sleeve body (3) center through hole is in capping plug (1) inner segment step hole aperture, and sleeve body (3) center through hole compression both ends of the spring face elastic force pressure type pushes up respectively and is attached on steel ball (4), pressure release plug (2) the inner segment step hole step surface; Between pressure release plug (2) and the capping plug (1) junction of the edges of two sheets of paper screw is arranged fixedly, capping plug (1) is installed in fixedly junction of the edges of two sheets of paper screw equally on piston body (5) the closure threads hole.
CN 201320233809 2013-05-03 2013-05-03 Piston structure of gas compressor Expired - Fee Related CN203214277U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320233809 CN203214277U (en) 2013-05-03 2013-05-03 Piston structure of gas compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320233809 CN203214277U (en) 2013-05-03 2013-05-03 Piston structure of gas compressor

Publications (1)

Publication Number Publication Date
CN203214277U true CN203214277U (en) 2013-09-25

Family

ID=49203821

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320233809 Expired - Fee Related CN203214277U (en) 2013-05-03 2013-05-03 Piston structure of gas compressor

Country Status (1)

Country Link
CN (1) CN203214277U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107378413A (en) * 2017-08-23 2017-11-24 河北天理环保科技有限公司 Pneumatic hammer Piston reform method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107378413A (en) * 2017-08-23 2017-11-24 河北天理环保科技有限公司 Pneumatic hammer Piston reform method

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130925

Termination date: 20210503

CF01 Termination of patent right due to non-payment of annual fee