CN102777376A - Novel concrete pump piston sealing piece for concrete pump - Google Patents

Novel concrete pump piston sealing piece for concrete pump Download PDF

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Publication number
CN102777376A
CN102777376A CN2012102778600A CN201210277860A CN102777376A CN 102777376 A CN102777376 A CN 102777376A CN 2012102778600 A CN2012102778600 A CN 2012102778600A CN 201210277860 A CN201210277860 A CN 201210277860A CN 102777376 A CN102777376 A CN 102777376A
Authority
CN
China
Prior art keywords
concrete pump
lip
seal
piston sealing
pump piston
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
CN2012102778600A
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Chinese (zh)
Inventor
储好波
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.)
JIANGSU RUNZHOU PLASTIC CO Ltd
Original Assignee
JIANGSU RUNZHOU PLASTIC 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 JIANGSU RUNZHOU PLASTIC CO Ltd filed Critical JIANGSU RUNZHOU PLASTIC CO Ltd
Priority to CN2012102778600A priority Critical patent/CN102777376A/en
Publication of CN102777376A publication Critical patent/CN102777376A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a novel concrete pump piston sealing piece for a concrete pump. The sealing piece comprises a sealing piece main body, wherein a connecting hole is arranged in the middle of the sealing piece main body; a lip of the sealing piece main body is a smooth slope or cambered surface; and an outer wall of the sealing piece main body is provided with a groove. According to the invention, no foreign matter is mixed up; operation is smooth; service life is long; production cost is low; and work efficiency is high.

Description

A kind of new concrete pump is with concrete pump piston Sealing
Technical field
The present invention relates to a kind of seal connector, be specifically related to a kind of concrete pump piston Sealing.
Background technique
Concrete pump is unusual important engineering machinery; In concrete pump delivering concrete process; Driving concrete pump pump head by piston rod moves reciprocatingly in carrying cylinder; U type lip and the interference fit of carrying cylinder (the interior 5mm of the big conveying cylinder of lip diameter of general concrete pump piston) through the concrete pump piston push out conveyance conduit with concrete pump, carry out concrete conveying operation.
The production material of concrete pump piston is macromolecular elastomer materials such as rubber or polyurethane, and its existing structure is a uniform section through hole ring bodies that has U type lip.In the process of delivering concrete; The phenomenon of horsestone or other aggregates (hereinafter to be referred as foreign matter) often appears in the U type lip of concrete pump piston; In case there is foreign matter to get into lip; Can cause the local compression of lip to increase immediately, lip is nonelastic, forms the situation such as serious eccentric wear, seaming of concrete pump piston.Reduce rapidly the working life of concrete pump piston simultaneously, do not reach transmission and concrete transmission side's amount of expectation.Even scuffing of cylinder bore can occur, carry cylinder situation such as to scrap, cause direct economic loss, increase cost of production.
Summary of the invention
Goal of the invention: the objective of the invention is in order to overcome deficiency of the prior art, provide a kind of no foreign matter to be mingled with, move smooth and easy, long service life, cost of production is low, the new concrete pump of high working efficiency is with concrete pump piston Sealing.
Technological scheme: in order to solve the problems of the technologies described above; A kind of new concrete pump of the present invention is with concrete pump piston Sealing; It comprises seal body; In the middle of said seal body, be provided with attachment hole, the lip of said seal body is level and smooth inclined-plane or cambered surface, on the outer wall of said seal body, is provided with groove.
Be provided with circular arc chamfering in said lip outer end, this circular arc chamfering is less than R3.
Said circular arc chamfering is R1.5.
Said lip becomes 7 ° with horizontal plane, and be connected hole wall and become 60 °.
Said seal body is an annular.
Said groove is an annular groove, and this annular groove is at least one.
Said seal body adopts macromolecular elastomer materials such as rubber or polyurethane.
The present invention changes the lip U type structure of original concrete pump piston Sealing into the inclined-plane of lip or seamlessly transitting of cambered surface, and formation face contacts, and thoroughly stops to be mingled with the phenomenon of foreign matter; Lip maximum diameter place at concrete pump piston Sealing; Adopt little circular arc chamfering (the chamfering circular arc is less than R3), it is more smooth and easy to make that concrete pump piston Sealing gets into when carrying cylinder, reduces lip and the rubbing surface of carrying cylinder; Reduced the heat that produces in the working procedure; Prolong concrete pump piston Sealing and the working life of carrying cylinder, reduced cost of production, improved working efficiency.
Beneficial effect: the present invention compared with prior art, its remarkable advantage is: the lip of seal body of the present invention adopts level and smooth inclined-plane or cambered surface, the contact of formation face thoroughly stops to be mingled with the phenomenon of foreign matter; Lip maximum diameter place at piston seal; Adopt little circular arc chamfering, it is more smooth and easy that it is got into when carrying cylinder, reduces lip and the rubbing surface of carrying cylinder; Reduced the heat that produces in the working procedure; Prolong concrete pump piston Sealing and the working life of carrying cylinder, reduced cost of production, improved working efficiency.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation at A place among Fig. 1.
Wherein:
1, seal body; 2, attachment hole; 3, lip; 4, groove; 5, circular arc chamfering; 6, connect hole wall
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
As depicted in figs. 1 and 2; A kind of new concrete pump of the present invention is with concrete pump piston Sealing; It comprises seal body 1; In the middle of said seal body 1, be provided with attachment hole 2, the lip 3 of said seal body 1 is level and smooth inclined-plane or cambered surface, on the outer wall of said seal body 1, is provided with groove 4; Be provided with circular arc chamfering 5 in said lip 3 outer ends, this circular arc chamfering 5 is less than R3; Said circular arc chamfering 5 is R1.5; Said lip 3 becomes 7 ° with horizontal plane, and be connected 6 one-tenth 60 ° of hole walls; Said seal body 1 is an annular; Said groove 4 is an annular groove, and this annular groove is at least one; Said seal body 1 adopts macromolecular elastomer materials such as rubber or polyurethane.The lip of seal body of the present invention adopts level and smooth inclined-plane or cambered surface, and formation face contacts, and thoroughly stops to be mingled with the phenomenon of foreign matter; Lip maximum diameter place at piston seal; Adopt little circular arc chamfering, it is more smooth and easy that it is got into when carrying cylinder, reduces lip and the rubbing surface of carrying cylinder; Reduced the heat that produces in the working procedure; Prolong concrete pump piston Sealing and the working life of carrying cylinder, reduced cost of production, improved working efficiency.
The invention provides a kind of thinking and method, realize that specifically the method for this technological scheme and approach are a lot, the above only is a preferred implementation of the present invention; Should be understood that; For those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching; These improvement and retouching also should be regarded as protection scope of the present invention, and all available existing technology of each constituent element not clear and definite in the present embodiment realizes.

Claims (7)

1. a new concrete pump is with concrete pump piston Sealing; It is characterized in that: it comprises seal body (1); In the middle of said seal body (1), be provided with attachment hole (2); The lip (3) of said seal body (1) is level and smooth inclined-plane or cambered surface, on the outer wall of said seal body (1), is provided with groove (4).
2. new concrete pump according to claim 1 is characterized in that with concrete pump piston Sealing: be provided with circular arc chamfering (5) in said lip (3) outer end, this circular arc chamfering (5) is less than R3.
3. new concrete pump according to claim 2 is characterized in that with concrete pump piston Sealing: said circular arc chamfering (5) is R1.5.
4. new concrete pump according to claim 1 is characterized in that with concrete pump piston Sealing: said lip (3) becomes 7 ° with horizontal plane, and is connected hole wall (6) and becomes 60 °.
5. new concrete pump according to claim 1 is characterized in that with concrete pump piston Sealing: said seal body (1) is annular.
6. new concrete pump according to claim 1 is characterized in that with concrete pump piston Sealing: said groove (4) is an annular groove, and this annular groove is at least one.
7. new concrete pump according to claim 1 is characterized in that with concrete pump piston Sealing: said seal body (1) adopts macromolecular elastomer materials such as rubber or polyurethane.
CN2012102778600A 2012-08-07 2012-08-07 Novel concrete pump piston sealing piece for concrete pump Pending CN102777376A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012102778600A CN102777376A (en) 2012-08-07 2012-08-07 Novel concrete pump piston sealing piece for concrete pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012102778600A CN102777376A (en) 2012-08-07 2012-08-07 Novel concrete pump piston sealing piece for concrete pump

Publications (1)

Publication Number Publication Date
CN102777376A true CN102777376A (en) 2012-11-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012102778600A Pending CN102777376A (en) 2012-08-07 2012-08-07 Novel concrete pump piston sealing piece for concrete pump

Country Status (1)

Country Link
CN (1) CN102777376A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104197002A (en) * 2014-08-19 2014-12-10 青岛开世密封工业有限公司 High-pressure concrete piston sealing piece
CN106321419A (en) * 2016-10-10 2017-01-11 国家海洋局天津海水淡化与综合利用研究所 Novel self-seal type piston

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2345518Y (en) * 1998-10-22 1999-10-27 三一重工业集团有限公司 Concrete pump conveying cylinder piston sealing device
CN101608616A (en) * 2009-07-10 2009-12-23 三一重工股份有限公司 Concrete pumping equipment and piston body thereof
CN101660521A (en) * 2009-08-31 2010-03-03 三一重工股份有限公司 Concrete pumping equipment and piston body thereof
CN101691861A (en) * 2009-10-22 2010-04-07 三一重工股份有限公司 Concrete pumping equipment and piston body thereof
CN202250793U (en) * 2011-10-18 2012-05-30 中联重科股份有限公司 Piston sealing body, concrete piston and concrete pumping device
CN202300996U (en) * 2011-09-26 2012-07-04 三一重工股份有限公司 Piston, pumping mechanism and concrete pumping equipment
CN202718854U (en) * 2012-08-07 2013-02-06 江苏润洲塑胶有限公司 Novel concrete pump sealing element for concrete pump

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2345518Y (en) * 1998-10-22 1999-10-27 三一重工业集团有限公司 Concrete pump conveying cylinder piston sealing device
CN101608616A (en) * 2009-07-10 2009-12-23 三一重工股份有限公司 Concrete pumping equipment and piston body thereof
CN101660521A (en) * 2009-08-31 2010-03-03 三一重工股份有限公司 Concrete pumping equipment and piston body thereof
CN101691861A (en) * 2009-10-22 2010-04-07 三一重工股份有限公司 Concrete pumping equipment and piston body thereof
CN202300996U (en) * 2011-09-26 2012-07-04 三一重工股份有限公司 Piston, pumping mechanism and concrete pumping equipment
CN202250793U (en) * 2011-10-18 2012-05-30 中联重科股份有限公司 Piston sealing body, concrete piston and concrete pumping device
CN202718854U (en) * 2012-08-07 2013-02-06 江苏润洲塑胶有限公司 Novel concrete pump sealing element for concrete pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104197002A (en) * 2014-08-19 2014-12-10 青岛开世密封工业有限公司 High-pressure concrete piston sealing piece
CN106321419A (en) * 2016-10-10 2017-01-11 国家海洋局天津海水淡化与综合利用研究所 Novel self-seal type piston

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SE01 Entry into force of request for substantive examination
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WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20121114

C02 Deemed withdrawal of patent application after publication (patent law 2001)