CN207700239U

CN207700239U - Antiexplosive manhole cover

Info

Publication number: CN207700239U
Application number: CN201721848585.8U
Authority: CN
Inventors: 吴兴滨
Original assignee: Luoyang Yixing Petrochemical Electrical Appliance & Instrumentation Co Ltd
Current assignee: Luoyang Yixing Petrochemical Electrical Appliance & Instrumentation Co Ltd
Priority date: 2017-12-26
Filing date: 2017-12-26
Publication date: 2018-08-07
Anticipated expiration: 2027-12-26

Abstract

A kind of Antiexplosive manhole cover, including well seat, well lid and locking device, well seat fix on the ground, and on well lid set kill-job seat and part well lid extends to inside well seat, it is characterised in that：The interconnecting piece of the two is equipped with multiple locking devices, and locking device includes shaft, lock tongue；The side wall of well seat is equipped with the chamber of installation locking device, the both sides of chamber are designed with a limited block, form the track of left and right directions between two limited blocks, lock tongue is equipped in the track, control hole is equipped in the middle part of lock tongue, control hole is designed with epitaxial region in left and right directions；Rectangular shaft is worn in control hole, the lower end of shaft is fallen in fixed chamber.Compared with the existing technology, the technique effect of the utility model is that the utility model will be equipped with locking device between well seat and well lid, completes the locked of both, and be equipped with sealing ring, has completely cut off inspection shaft completely and has been contacted with extraneous, very safe.

Description

Antiexplosive manhole cover

Technical field

The utility model is related to a kind of explosion prevention manhole covers of petrochemical industry.

Background technology

In petrochemical industry, some is sewage disposal facility to underground pipe network, and the mixed of various water is contaminated in these pipelines Close object, such as greasy dirt, rainwater, fuel gas ingredient.Scene needs draining, there are the wells that many and ground communicates for the needs of dredging Mouthful.Due to more complex for sewage disposal facility interior media ingredient, do not pay attention to that slightly fire or explosion will be caused, directly threaten production Safety.Existing most of petrochemical industries use common ductile cast iron manhole cover, well lid top to spread sand in well head, are come with this The nuisance that the open fire on ground does not enter in well and in well is allowed to be not leak into the method on ground to handle.There are more for this method Drawback is secondly really to want explosion on fire, existing well lid meeting caused by the not necessarily external open fire on fire of combustible in well first It is blown up by air blast, open fire spreads out at once, threatens Field Force and equipment.Technologies in Petrochemical Industry is multiple due to this problem Appearance accident causes chain explosion on fire.

Utility model content

For the deficiency of original inspection well cover, explosion prevention manhole cover can solve the above-mentioned problem, such inspection well cover according to Explosive-proof sealed requirement is designed, and completely isolated inspection shaft interior media and external access, inspection shaft are stamped closedown structure, convenient The installation and maintenance at scene.

The technical solution of the utility model is specially：

A kind of Antiexplosive manhole cover, including well seat, well lid and locking device, well seat fix on the ground, and well lid covers on kill-job seat And part well lid extends to inside well seat, it is characterised in that：The interconnecting piece of the two is equipped with multiple locking devices, and locking device includes Shaft, lock tongue；The side wall of well seat is equipped with the chamber of installation locking device, and the both sides of chamber are designed with a limited block, this two The track of left and right directions is formed between a limited block, and lock tongue is equipped in the track, is equipped with control hole in the middle part of lock tongue, control hole is on a left side Right direction is designed with epitaxial region；Rectangular shaft is worn in control hole, the lower end of shaft is fallen in fixed chamber, and control is arranged outside shaft Cam disc processed, control cam disc are pressed in the locular wall upper surface of fixed chamber and keep its stabilization, and control cam disc is located at control hole In approximately the same plane, the shape of control cam disc distal end is matched with the shape of epitaxial region, and the upper end of shaft is by being located on well lid Handle hole be exposed to the external world；Well lid is equipped with sealed chamber in the corresponding position of lock tongue.

Dust-proof guard is equipped in handle hole.

It is equipped with dust-proof spring between dust-proof guard and control cam disc, dust-proof spring pocket is in shaft.

Two groups of lock tongue compression springs are equipped between lock tongue and well seat, compression spring is through in the spring housing of lock tongue.

Well lid is equipped with O-ring seals on the cylindrical face that well seated connection touches.

The upper surface of well seat is equipped with rectangular seal on the contact surface with well lid, the lower surface of sealing ring be it is wavy, The shape of the upper surface of well seat and the lower surface of sealing ring matches.

Compared with the existing technology, the technique effect of the utility model is that the utility model will be equipped between well seat and well lid Locking device completes the locked of both, and is equipped with sealing ring, has completely cut off inspection shaft completely and has been contacted with extraneous, has been pacified very much Entirely.

Description of the drawings

Fig. 1 is the schematic diagram of the utility model.

Fig. 2 is the enlarged diagram of lock tongue in Fig. 1.

Fig. 3 is the diagrammatic cross-section of Fig. 1.

Fig. 4 is the enlarged diagram of shaft in Fig. 1.

Fig. 5 is the enlarged diagram of rectangular seal in Fig. 3.

Specific implementation mode

Such as Fig. 1-5, a kind of Antiexplosive manhole cover includes well seat 1, well lid 2 and locking device 3, and well seat 1 fixes on the ground, well lid On 2 sets of kill-job seats 1 and part well lid 2 extends to inside well seat 1, and the interconnecting piece of the two is equipped with multiple locking devices 3, locking device 3 include shaft 6, lock tongue 7.

The side wall of well seat 1 is equipped with the chamber 16 of installation locking device 3, the both sides of chamber 16（Upper and lower directions in Fig. 2） It is designed with a limited block 9, the track of left and right directions is formed between two limited blocks 9, lock tongue 7, lock tongue 7 is equipped in the track Middle part is equipped with control hole 71, and control hole 71 is designed with epitaxial region 72 in left and right directions.

Rectangular shaft 6 is worn in control hole 71, the lower end of shaft 6 is fallen in fixed chamber 18, and it is convex that control is arranged outside shaft 6 Wheel disc 61, control cam disc 61 are pressed in the locular wall upper surface of fixed chamber 18 and keep its stabilization, control cam disc 61 and control hole 71 are located in approximately the same plane, and the shape of 61 distal end of control cam disc is matched with the shape of epitaxial region 72, and the upper end of shaft 6 passes through The handle hole 26 being located on well lid 2 is exposed to the external world.

Well lid 2 is equipped with sealed chamber 25 in the corresponding position of lock tongue 7.

In order to facilitate sealing, it is equipped with dust-proof guard 4 in handle hole 26, is equipped between dust-proof guard 4 and control cam disc 61 Dust-proof spring 5, dust-proof spring 5 are sleeved in shaft 6.

It is sealed in order to facilitate lock tongue 7, two groups of lock tongue compression springs 8 are equipped between lock tongue 7 and well seat 1, compression spring 8 is through lock tongue 7 In spring housing 75.

In order to facilitate sealing, well lid 2 is equipped with O-ring seals 11 on the cylindrical face that well seat 1 contacts.

In order to facilitate sealing, the upper surface of well seat 1 with rectangular seal 12, sealing ring are equipped on the contact surface of well lid 2 12 lower surface is wavy, and the shape of the upper surface and the lower surface of sealing ring 12 of well seat 1 matches.

Its working principle is that：

When installation, dust-proof guard 4 is released.

With unlock 10 rotating shaft 6 of spanner, shaft 6 drives control 61 synchronous rotary of cam disc, when control cam disc 61 The shape of distal end and entrance inside epitaxial region 72（Referring to the positions a in Fig. 2）When, lock tongue 7 between two limited blocks 9 track to Extreme position is inside run to, is also entered in sealed chamber 25, well lid 2 is locked with well seat 1.

When unlock, shaft 6 is reversely rotated, when shape and the entrance outside epitaxial region 72 of the distal end of control cam disc 61（Ginseng See the positions b in Fig. 2）When, the track between two limited blocks 9 of lock tongue 7 runs to extreme position outward, also has left sealed chamber In 25, well lid 2 is unlocked with well seat 1.

When well lid 2 and well seat 1 are installed, be sealed in the seam allowance position mounting O-shaped sealing ring 8 of well lid 2, prevent liquid into Enter inside well lid 2；Dovetail sealing ring 9 is installed in the bottom of well lid 2, secondary seal is carried out to well lid 2.

Other content participates in the prior art.

Above-described is only preferred embodiments of the present invention, it is noted that for those skilled in the art For, under the premise of not departing from the utility model general idea, several changes and improvements can also be made, these should also be considered as The scope of protection of the utility model.

Claims

1. a kind of Antiexplosive manhole cover, including well seat（1）, well lid（2）And locking device（3）, well seat（1）It fixes on the ground, well lid （2）Cover kill-job seat（1）Upper and part well lid（2）Extend to well seat（1）It is internal, it is characterised in that：The interconnecting piece of the two is equipped with more A locking device（3）, locking device（3）Including shaft（6）, lock tongue（7）；

Well seat（1）Side wall be equipped with installation locking device（3）Chamber（16）, chamber（16）Both sides be designed with a limit Block（9）, two limited blocks（9）Between form the track of left and right directions, lock tongue is equipped in the track（7）, lock tongue（7）Middle part is set There is control hole（71）, control hole（71）It is designed with epitaxial region in left and right directions（72）；

Control hole（71）In wear rectangular shaft（6）, shaft（6）Lower end fall in fixed chamber（18）It is interior, shaft（6）It is arranged outside Control cam disc（61）, control cam disc（61）It is pressed in fixed chamber（18）Locular wall upper surface and keep its stabilization, control cam Disk（61）With control hole（71）In approximately the same plane, cam disc is controlled（61）The shape and epitaxial region of distal end（72）Shape Matching, shaft（6）Upper end by being located at well lid（2）On handle hole（26）It is exposed to the external world；

Well lid（2）In lock tongue（7）Corresponding position be equipped with sealed chamber（25）.

2. Antiexplosive manhole cover as described in claim 1, it is characterised in that：Handle hole（26）It is interior to be equipped with dust-proof guard（4）.

3. Antiexplosive manhole cover as claimed in claim 2, it is characterised in that：Dust-proof guard（4）With control cam disc（61）Between set There is dust-proof spring（5）, dust-proof spring（5）It is sleeved on shaft（6）On.

4. Antiexplosive manhole cover as described in claim 1, it is characterised in that：Lock tongue（7）With well seat（1）Between be equipped with two groups of lock tongue pressures Spring（8）, compression spring（8）It is through lock tongue（7）Spring housing（75）It is interior.

5. Antiexplosive manhole cover as described in claim 1, it is characterised in that：Well lid（2）In well seat（1）The cylindrical face of contact is equipped with O-ring seals（11）.

6. Antiexplosive manhole cover as described in claim 1, it is characterised in that：Well seat（1）Upper surface with well lid（2）Contact surface It is equipped with rectangular seal（12）, sealing ring（12）Lower surface be wavy, well seat（1）Upper surface and sealing ring（12）'s The shape of lower surface matches.