CN104895760A - Second-stage pressure device - Google Patents

Second-stage pressure device Download PDF

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Publication number
CN104895760A
CN104895760A CN201510269150.7A CN201510269150A CN104895760A CN 104895760 A CN104895760 A CN 104895760A CN 201510269150 A CN201510269150 A CN 201510269150A CN 104895760 A CN104895760 A CN 104895760A
Authority
CN
China
Prior art keywords
piston
sealing
high pressure
sealing seat
stage
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.)
Pending
Application number
CN201510269150.7A
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Chinese (zh)
Inventor
高雪峰
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.)
NANTONG GUANGXING PNEUMATIC EQUIPMENT CO Ltd
Original Assignee
NANTONG GUANGXING PNEUMATIC EQUIPMENT 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 NANTONG GUANGXING PNEUMATIC EQUIPMENT CO Ltd filed Critical NANTONG GUANGXING PNEUMATIC EQUIPMENT CO Ltd
Priority to CN201510269150.7A priority Critical patent/CN104895760A/en
Publication of CN104895760A publication Critical patent/CN104895760A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a second-stage pressure device. The second-stage pressure device comprises an outer pipe, a high-pressure rod and a second-stage piston sealed between the outer pipe and the high-pressure rod, and a high-pressure pipe is fixed to the lower end of the second-stage piston. The second-stage pressure device is characterized in that a sealing base is fixed to the upper end of the second-stage piston in a threaded mode, a detaching structure which rotates from the interior of the outer pipe for detaching the sealing base from the second-stage piston is arranged on the upper end face of the sealing base, a guide ring made of nonmetal materials is arranged between the sealing base and the high-pressure rod, and a first sealing piece is arranged between the sealing base and the high-pressure rod. Compared with the prior art, the sealing base is fixed to the upper end of the second-stage piston in the threaded mode, sealing of the second-stage piston and the high-pressure rod is transferred to the sealing base from the second-stage piston, in this way, when the high-pressure rod is detached, only the sealing base needs to be detached, separation of the high-pressure rod from the second-stage piston is achieved, the high-pressure rod can be easily detached, and the efficiency is greatly improved.

Description

Two-stage pressurizing device
Technical field:
The present invention relates to a kind of pressurization device of high-pressure pump, specifically for the two-stage pressurizing device of this high-pressure pump.
Background technique:
The existing two-stage pressurizing device for high-pressure pump, as shown in Figure 2, generally comprises outer tube 11, second piston 12, high-voltage tube 13 and high pressure stem 14.Wherein second piston 12 is sealed in outer tube 11 by seal ring, and high-voltage tube 13 is fixed on the lower end of second piston 12 by screw thread, and the upper end of second piston 12 realizes axially locating by trim ring 15 and high pressure stem 14.High pressure stem, when mounting and dismounting, first must be dismantled outer tube and second piston, then high pressure stem could be taken down from from high-voltage tube, and the installation and removal of high pressure stem are complicated, time and effort consuming.
Summary of the invention:
Technical problem to be solved by this invention is for above-mentioned the deficiencies in the prior art, and provides a kind of and can be easy for installation and removal the two-stage pressurizing device of high pressure stem without the need to dismantling outer tube and second piston.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of two-stage pressurizing device, the second piston comprising outer tube, high pressure stem and be sealed between outer tube and high pressure stem, high-voltage tube is fixed with in described second piston lower end, it is characterized in that: be fixed with a sealing seat at described second piston threaded upper ends, sealing seat upper-end surface is provided with the detaching structure rotating in described outer tube and dismantled from described second piston by sealing seat, between described sealing seat and high pressure stem, be provided with the guide collar of non-metallic material, between described sealing seat and high pressure stem, be provided with the first Sealing.
Described guide collar is prolong axial arranged two of described high pressure stem, and described first Sealing is between two guide collar.
Described detaching structure is groove structure or the protruding structure with at least one axial locating surface.
Described groove structure is inner polygon groove; Described protruding structure is outer polygonal post.
Compared with prior art, the present invention secures a sealing seat at second piston threaded upper ends, thus the sealing of second piston and high pressure stem has been transferred on sealing seat from second piston, like this when dismantling high pressure stem, only sealing seat need be dismantled, just achieve being separated of high pressure stem and second piston, easy to doly can realize the dismounting of high pressure stem, greatly improve efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of prior art.
In Fig. 1: 1, outer tube, 2, second piston, 3, high-voltage tube, 4, high pressure stem, 5, sealing seat, 6, guide collar, the 7, first Sealing, the 8, second Sealing.
Embodiment
Below in conjunction with accompanying drawing, elaborate to the present invention: as shown in Figure 1, two-stage pressurizing device of the present invention, comprises outer tube 1, second piston 2, high-voltage tube 3 and high pressure stem 4.Second piston 2 is sealed with outer tube 1 by the second Sealing 8, is connected with sealing seat 5, is provided with the first Sealing 7 in sealing seat 5 at second piston 2 threaded upper ends.The sealing of second piston 2 and high pressure stem 4 is achieved by the first Sealing 7.Meanwhile, in order to make high pressure stem 4 do not pulled on surface when moving, the guide collar 6 of nonmetallic material is also installed between sealing seat 5 and high pressure stem 4.Low and the plastics of lightweight of cost generally chosen by the material of guide collar 6.In order to improve the precision of axially locating, guide collar 6 can arrange two.The conveniently dismounting of sealing seat 5, sealing seat 5 upper-end surface is provided with the detaching structure rotating in outer tube and dismantled from second piston by sealing seat, in the present embodiment, detaching structure is spanner groove, certainly, detaching structure also can adopt conventional groove structure or protruding structure, as the polygonal post of interior hex slot or outer-hexagonal.

Claims (4)

1. a two-stage pressurizing device, the second piston comprising outer tube, high pressure stem and be sealed between outer tube and high pressure stem, high-voltage tube is fixed with in described second piston lower end, it is characterized in that: be fixed with a sealing seat at described second piston threaded upper ends, sealing seat upper-end surface is provided with the detaching structure rotating in described outer tube and dismantled from described second piston by sealing seat, between described sealing seat and high pressure stem, be provided with the guide collar of non-metallic material, between described sealing seat and high pressure stem, be provided with the first Sealing.
2. two-stage pressurizing device according to claim 1, is characterized in that: described guide collar is prolong axial arranged two of described high pressure stem, and described first Sealing is between two guide collar.
3. two-stage pressurizing device according to claim 1 and 2, is characterized in that: described detaching structure is groove structure or the protruding structure with at least one axial locating surface.
4. two-stage pressurizing device according to claim 3, is characterized in that: described groove structure is inner polygon groove; Described protruding structure is outer polygonal post.
CN201510269150.7A 2015-05-25 2015-05-25 Second-stage pressure device Pending CN104895760A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510269150.7A CN104895760A (en) 2015-05-25 2015-05-25 Second-stage pressure device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510269150.7A CN104895760A (en) 2015-05-25 2015-05-25 Second-stage pressure device

Publications (1)

Publication Number Publication Date
CN104895760A true CN104895760A (en) 2015-09-09

Family

ID=54028648

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510269150.7A Pending CN104895760A (en) 2015-05-25 2015-05-25 Second-stage pressure device

Country Status (1)

Country Link
CN (1) CN104895760A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11351150A (en) * 1998-06-04 1999-12-21 Ebara Corp Reciprocating pump and its maintenance
US6077053A (en) * 1997-04-10 2000-06-20 Kabushiki Kaisha Kobe Seiko Sho Piston type gas compressor
US6171070B1 (en) * 1997-05-09 2001-01-09 Hakusu Tech Co., Ltd. High-pressure reciprocating pumps
US6382940B1 (en) * 2000-07-18 2002-05-07 George H. Blume High pressure plunger pump housing and packing
CN202991461U (en) * 2012-12-25 2013-06-12 上海清河机械有限公司 Fluid end assembly of plunger pump
EP2728190A1 (en) * 2012-11-02 2014-05-07 Interpump Engineering S.r.l. A hydraulic piston pump
CN204692024U (en) * 2015-05-25 2015-10-07 南通广兴气动设备有限公司 Two-stage pressurizing device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6077053A (en) * 1997-04-10 2000-06-20 Kabushiki Kaisha Kobe Seiko Sho Piston type gas compressor
US6171070B1 (en) * 1997-05-09 2001-01-09 Hakusu Tech Co., Ltd. High-pressure reciprocating pumps
JPH11351150A (en) * 1998-06-04 1999-12-21 Ebara Corp Reciprocating pump and its maintenance
US6382940B1 (en) * 2000-07-18 2002-05-07 George H. Blume High pressure plunger pump housing and packing
EP2728190A1 (en) * 2012-11-02 2014-05-07 Interpump Engineering S.r.l. A hydraulic piston pump
CN202991461U (en) * 2012-12-25 2013-06-12 上海清河机械有限公司 Fluid end assembly of plunger pump
CN204692024U (en) * 2015-05-25 2015-10-07 南通广兴气动设备有限公司 Two-stage pressurizing device

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Application publication date: 20150909