CN202327386U - Explosion-proof through head - Google Patents

Explosion-proof through head Download PDF

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Publication number
CN202327386U
CN202327386U CN2011204439363U CN201120443936U CN202327386U CN 202327386 U CN202327386 U CN 202327386U CN 2011204439363 U CN2011204439363 U CN 2011204439363U CN 201120443936 U CN201120443936 U CN 201120443936U CN 202327386 U CN202327386 U CN 202327386U
Authority
CN
China
Prior art keywords
explosion
proof
ring
sleeve pipe
head
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 - Lifetime
Application number
CN2011204439363U
Other languages
Chinese (zh)
Inventor
张胜余
张乃月
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.)
CHINA HELON EXPLOSION-PROOF ELECTRIC Co Ltd
Original Assignee
CHINA HELON EXPLOSION-PROOF ELECTRIC 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 CHINA HELON EXPLOSION-PROOF ELECTRIC Co Ltd filed Critical CHINA HELON EXPLOSION-PROOF ELECTRIC Co Ltd
Priority to CN2011204439363U priority Critical patent/CN202327386U/en
Application granted granted Critical
Publication of CN202327386U publication Critical patent/CN202327386U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to an explosion-proof through head which mainly solves the problems of inconvenience in processing and high processing cost of the existing explosion-proof through head. The explosion-proof through head comprises a shell and a sleeve; a sealing ring is installed in the sleeve; the tail end of the sleeve is in threaded connection with a hold-down nut; the shell is provided with a round hole; a round table is arranged at one end of the sleeve; the round hole is fixedly installed with the round table; an inner hole of the sleeve matched with the sealing ring is a straight through hole; a retaining ring is fixed on the round table and provided with a wire through hole; and the internal diameter of the wire through hole is larger than that of the sealing ring and smaller than external diameter of the sealing ring. The explosion-proof through head has the advantages of simplicity in processing, low processing cost and waste reuse.

Description

Explosion-proof logical head
Technical field
The utility model relates to explosion-proof logical head, is a kind of explosion-proof logical head that is used for the steel plate weld specifically.
Background technique
Explosion-proof logical head is to be used for the casing lead-in cable and to prevent that the outer hazardous gas of case, dust etc. from getting into a kind of explosion-proof wire passing device in the case.It is made up of sleeve pipe, seal ring, gland nut, packing ring etc.Sleeve pipe is connected with housing on the casing during use, and cable is introduced enclosure interior through the line mouth of crossing of gland nut, packing ring, seal ring and logical head.Seal ring adopts elastic rubber material to make usually, and the matching gap between the outside diameter of cable and the ring inner hole is very little, when tightening locking nut in use and make the seal ring radial expansion cable is held tightly, thereby is reached the purpose of sealing.
Present common explosion-proof logical header structure on the market has two kinds, and is a kind of as shown in Figure 1, on housing, is provided with the line mouth, will lead to head in the outer end of housing and cross line mouth centrally aligned to be welded on the housing.This mode causes Location accuracy low, particularly need weld adjacent nearer (see figure 2) between a plurality of logical heads and logical head when one side, causes bad welding maybe can't operate; Another kind of as shown in Figure 3, on housing, be provided with the line mouth, an end of logical head is provided with round platform, and seal ring is placed in the counterbore of sleeve pipe, owing to need defectives such as the processing counterbore causes sleeve pipe processing trouble, cost is high, consumptive material is big, waste material can't use.
Summary of the invention
In order to overcome disadvantages of background technology, the utility model provides a kind of explosion-proof logical head, and this explosion-proof logical head has the advantage that processing is simple, cost is low, waste material can be recycled.
The technological scheme of the utility model is: a kind of explosion-proof logical head, comprise housing and sleeve pipe, and in the said sleeve pipe seal ring is installed; The said cannula end gland nut that has been threaded, housing is provided with circular hole, and said sleeve pipe one end is provided with round platform; Said circular hole and round platform fixed installation, the endoporus that said sleeve pipe matches with seal ring is a clear opening, is fixed with back-up ring on the said round platform; Said back-up ring was provided with the line mouth, and the internal diameter of said line mouth excessively is bigger and littler than the external diameter of seal ring than the internal diameter of seal ring.
Further, the end face of said round platform is provided with circular groove, and said back-up ring is fixed on the circular groove.
Further again, said housing, sleeve pipe and back-up ring are fixing through welding.
Further again, said weld is positioned at enclosure interior.
The beneficial effect of the utility model is: this explosion-proof logical head has the advantage that processing is simple, consumptive material is few and waste material can be recycled, processing cost is low.
Description of drawings
Fig. 1 is the prior art constructions schematic representation.
Fig. 2 is the structural representation that a plurality of explosion-proof logical heads are installed on the casing.
Fig. 3 is the another kind of structural representation of technology now.
Fig. 4 is the structural representation of the utility model.
Among Fig. 1-Fig. 4, housing 1, circular hole 101, sleeve pipe 2, round platform 201, circular groove 202, back-up ring 3 is crossed line mouth 301, weld 4, locking nut 5, seal ring 6.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified:
As shown in Figure 4, the utility model provides a kind of explosion-proof logical head, comprises housing 1 and sleeve pipe 2; In the said sleeve pipe 2 seal ring 6 is installed, said sleeve pipe 2 end thread are connected with gland nut 5, and housing 1 is provided with circular hole 101; Said sleeve pipe 2 one ends are provided with round platform 201; Said circular hole 101 and round platform 201 fixed installations, the endoporus that said sleeve pipe 2 matches with seal ring 6 is a clear opening, is fixed with back-up ring 3 on the said round platform 201; Said back-up ring 3 was provided with line mouth 301, and the internal diameter of said line mouth 301 excessively is bigger and littler than the external diameter of seal ring 6 than the internal diameter of seal ring 6.Certainly circular hole 101 described here also can adopt other shape to locate with round platform 201, and such as triangle, shapes such as rectangle are come positioning and fixing.
In order to make back-up ring 3 be convenient to fixing and the location, on the end face of round platform 201, be provided with circular groove 202, said back-up ring 3 is fixed on the circular groove 202.
For the ease of housing 1, sleeve pipe 2 and back-up ring 6 threes are fixed, housing 1, sleeve pipe 2 and back-up ring 6 is fixing through the mode of welding.
When having a plurality of explosion-proof logical on the casing, be convenient to welding, make said weld 4 be positioned at housing 1 inside.
The using process of explosion-proof logical head, cable passed line mouth 301, made seal ring 6 radial compression hold cable tightly thereby tighten locking nut 5 then, finally reached seal action.
Present embodiment should not be regarded as the restriction to the utility model, but any improvement of doing based on the spirit of the utility model, all should be within the protection domain of the utility model.

Claims (4)

1. explosion-proof logical head; Comprise housing (1) and sleeve pipe (2); Seal ring (6) is installed in the said sleeve pipe (2), and said sleeve pipe (2) end thread is connected with gland nut (5), and housing (1) is provided with circular hole (101); Said sleeve pipe (2) one ends are provided with round platform (201); Said circular hole (101) and round platform (201) fixed installation, it is characterized in that: the endoporus that said sleeve pipe (2) matches with seal ring (6) is a clear opening, is fixed with back-up ring (3) on the said round platform (201); Said back-up ring (3) was provided with line mouth (301), and the internal diameter of said line mouth (301) excessively is bigger and littler than the external diameter of seal ring (6) than the internal diameter of seal ring (6).
2. explosion-proof logical head according to claim 1 is characterized in that: the end face of said round platform (201) is provided with circular groove (202), and said back-up ring (3) is fixed on the circular groove (202).
3. explosion-proof logical head according to claim 1 and 2 is characterized in that: said housing (1), sleeve pipe (2) and back-up ring (3) are fixing through welding.
4. explosion-proof logical head according to claim 3 is characterized in that: said weld (4) is positioned at housing (1) inside.
CN2011204439363U 2011-11-10 2011-11-10 Explosion-proof through head Expired - Lifetime CN202327386U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204439363U CN202327386U (en) 2011-11-10 2011-11-10 Explosion-proof through head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204439363U CN202327386U (en) 2011-11-10 2011-11-10 Explosion-proof through head

Publications (1)

Publication Number Publication Date
CN202327386U true CN202327386U (en) 2012-07-11

Family

ID=46439365

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204439363U Expired - Lifetime CN202327386U (en) 2011-11-10 2011-11-10 Explosion-proof through head

Country Status (1)

Country Link
CN (1) CN202327386U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104180078A (en) * 2014-08-17 2014-12-03 成都国光电子仪表有限责任公司 Wire outlet structure for fuel gas test terminal
CN104197014A (en) * 2014-08-17 2014-12-10 成都国光电子仪表有限责任公司 Detachable wire outlet sealing element for fuel gas test terminal
CN106567966A (en) * 2016-10-21 2017-04-19 上海市政工程设计研究总院(集团)有限公司 Underground composite pipe gallery group-pipe through-wall leakage prevention method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104180078A (en) * 2014-08-17 2014-12-03 成都国光电子仪表有限责任公司 Wire outlet structure for fuel gas test terminal
CN104197014A (en) * 2014-08-17 2014-12-10 成都国光电子仪表有限责任公司 Detachable wire outlet sealing element for fuel gas test terminal
CN106567966A (en) * 2016-10-21 2017-04-19 上海市政工程设计研究总院(集团)有限公司 Underground composite pipe gallery group-pipe through-wall leakage prevention method

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C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20120711