CN202009556U - Sealing structure of sealed case - Google Patents
Sealing structure of sealed case Download PDFInfo
- Publication number
- CN202009556U CN202009556U CN2011201045586U CN201120104558U CN202009556U CN 202009556 U CN202009556 U CN 202009556U CN 2011201045586 U CN2011201045586 U CN 2011201045586U CN 201120104558 U CN201120104558 U CN 201120104558U CN 202009556 U CN202009556 U CN 202009556U
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- CN
- China
- Prior art keywords
- elastic sealing
- sealing element
- hermetically
- lockhole
- stuffing box
- 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
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Abstract
The utility model relates to a sealing structure of a sealed case, which comprises an annular holding groove (1), an annular elastic sealing part (2) and a holddown plate (3), wherein the holding groove (1) is positioned on the upper edge of a case body, the elastic sealing part (2) is held in the holding groove (1), the holddown plate (3) is arranged on a case cover and used for pressing the elastic sealing part (2), the surface of the holddown plate (3), which is in contact with the elastic sealing part (2), is a plane, and the elastic sealing part (2) and the holddown plate (3) press each other through a pressing mechanism arranged on the case body and the case cover. The rigidity of the elastic sealing part (2) is 45 to 50 degrees, the compression amount of the elastic sealing part (2) is 1mm to 1.5mm, and the surface planeness of the holddown plate (3) is not larger than 0.4. The sealing effect of the sealing structure of the sealed case is good, the insulation level is high, and the protection level can reach IP67.
Description
Technical field
The utility model relates to a kind of hermetically-sealed construction, relates in particular to the hermetically-sealed construction of a kind of railway with stuffing box.
Background technology
At present, China railways is laid with the casing that telecommunication cable, signalling arrangement are equipped with in a large amount of inside along the line, as signal cable box, signal transformer chamber etc., commands and guide the normal operation of train.Because casing generally all places in the open, be exposed to and expose to the sun and rain, even in the bad weathers such as sand and dust, dust storm, be stuffing box so require casing, and have certain degree of protection, enter the electric leakage that causes or peril such as creepage to prevent rain leakage, sand and dust.The railway of prior art is generally IP5X or lower degree of protection with the degree of protection of stuffing box at present, the degree of protection of these stuffing boxs still is not high enough, having grown the class of insulation that can cause stuffing box service time reduces, cause electric leakage or creepage phenomenon, serious also may cause telecommunication cable, signalling arrangement explode.
The utility model content
Technical problem to be solved in the utility model is at above the deficiencies in the prior art, and the hermetically-sealed construction of a kind of good sealing effect, stuffing box that the class of insulation is high is provided.
For addressing the above problem, the utility model provides a kind of hermetically-sealed construction of stuffing box, comprise the holding tank, the cyclic spring seal that is placed in holding tank that are positioned at the casing upper edge, be located at the plate that supports that being used on the case lid compresses elastic sealing element, the contact-making surface that supports plate and elastic sealing element is a plane, elastic sealing element with support plate and push against mutually by the hold down gag of being located on casing and the case lid, the hardness of elastic sealing element is 45～50 °, the decrement of elastic sealing element is 1～1.5mm, and the surface planarity that supports plate is not more than 0.4.
After adopting above structure, the utility model compared with prior art, have the following advantages: its elastic sealing element of the hermetically-sealed construction of sealing case with support plate and push against the external stability of carrying out the mutual alignment mutually by the hold down gag of being located on casing and the case lid, make elastic sealing element and support that plate closing is intact, tightness is suitable, the contact-making surface that supports plate and elastic sealing element is a plane, the decrement of elastic sealing element is at 1～1.5mm, and such decrement makes seal degree height between elastic sealing element and the plane that contacts with it; The hardness of elastic sealing element is 45～50 °, this make this elastic sealing element good springiness, be difficult for aging, water proofing property is strong; The surface planarity that supports plate is not more than 0.4, and this makes that support each position of plate is consistent uniformity height substantially to the decrement of elastic sealing element.Comprehensive above these factors find that through on probation and test the degree of protection of the hermetically-sealed construction of sealing case reaches IP67, good sealing effect, and class of insulation height can effectively prevent problems such as rain leakage, sand and dust enter, thereby has effectively avoided the generation of peril.
The cross section of described holding tank is semicircle.Semicircular structure can realize better that the decrement of elastic sealing element is the requirement of 1～1.5mm.
As preferably, the material of described elastic sealing element is an Ethylene Propylene Terpolymer.The Ethylene Propylene Terpolymer good springiness, be difficult for aging, water proofing property is strong, applicable to 40 ℃～80 ℃ not hardening, aging, useful life is more than 10 years.
As preferably, described elastic sealing element with support plate and push against mutually by hinge means and the locker that is positioned at casing and case lid offside.The combination folding with convenience of hinge means and locker and rotating flexibly can effectively be controlled elastic sealing element and support tightness between the plate, thereby meets the requirements of the decrement of elastic sealing element.
As further preferred, described locker comprises lock body and lock pin, lock body is provided with and is used to the main lockhole that allows lock pin be inserted through, lock body one side is embedded with a metalwork, the sidewall of metalwork place side is provided with the secondary lockhole that connects with main lockhole, and secondary lockhole passes metalwork and is provided with internal thread, is combined with trip bolt in the secondary lockhole, lock pin is that the lower end is provided with externally threaded metal barred body, and is provided with the fastening nut from main lockhole bottom lock pin is tightened up that screws with external screw thread.This locker is provided with main lockhole and secondary lockhole, forms double locking, can realize the control of making elastic sealing element and supporting tightness between the plate when having high theftproof performance effectively, and the decrement that makes elastic sealing element is within claimed range.
Description of drawings
Sectional view when the hermetically-sealed construction of shown in Figure 1 is the utility model stuffing box is closed;
Schematic diagram when the hermetically-sealed construction of shown in Figure 2 is the utility model stuffing box launches;
Vertical cross-section schematic diagram during the locker snap close of shown in Figure 3 is the utility model stuffing box hermetically-sealed construction.
Wherein: 1, holding tank; 2, elastic sealing element; 3, support plate; 4, hinge means; 5, locker; 5-1, lock body; 5-2, lock pin; 5-3, main lockhole; 5-4, metalwork; 5-5, secondary lockhole; 5-6, trip bolt; 5-7, fastening nut.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in the figure, the hermetically-sealed construction of the utility model stuffing box, comprise the holding tank 1, the elastic sealing element 2 that is placed in holding tank 1 that are positioned at the casing upper edge, be located at that being used on the case lid compress elastic sealing element 2 support plate 3, the contact-making surface that supports plate 3 and elastic sealing element 2 is a plane, elastic sealing element 2 with support plate 3 and push against mutually by the hold down gag of being located on casing and the case lid.The hardness of elastic sealing element 2 is 45～50 °, and the decrement of elastic sealing element 2 is 1～1.5mm, and the surface planarity that supports plate 3 is not more than 0.4.
The cross section of holding tank 1 is semicircle, and holding tank 1 one injection moulding is in four edges of casing upper edge.The contact-making surface that supports plate 3 and elastic sealing element 2 is a plane, supports the cross-sectional sizes of plate 3 and the cross-sectional sizes and the size match of size and elastic sealing element 2.
The sealing ring that elastic sealing element 2 is made for the Ethylene Propylene Terpolymer material, sealing ring directly are placed in the holding tank 1.
Described elastic sealing element 2 with support plate 3 and push against mutually by hinge means 4 and the locker 5 that is positioned at casing and case lid offside.Hinge means 4 adopts prior art, and two hinge pins difference one injection moulding of hinge means 4 is in the casing and the case lid edge of stuffing box rear side.Locker comprise the one injection moulding in the lock body 5-1 of casing front side and the injection moulding of afterbody one in the lock pin 5-2 of relevant position, case lid front side, lock body 5-1 central authorities are provided with the main lockhole 5-3 that can allow lock pin 5-2 be inserted through along the axis, lock body 5-1 one side is embedded with a metalwork 5-4, the sidewall of metalwork 5-4 place side is provided with the secondary lockhole 5-5 that connects with main lockhole 5-3, secondary lockhole 5-5 passes metalwork 5-4 and is provided with internal thread, be combined with trip bolt 5-6 in the secondary lockhole 5-5, the 5-2 lock pin is that the lower end is provided with externally threaded metal barred body, and be provided with external screw thread screw with from the main lockhole 5-3 bottom fastening nut 5-7 that lock pin 5-2 is fastening.Lock pin 5-2 is inserted through the main lockhole 5-3 of lock body 5-1, tightly be spun on the external screw thread of lock pin 5-2 lower end with supporting fastening nut 5-7 in lock body 5-1 bottom, trip bolt 5-6 in the secondary lockhole 5-5 that will screw in advance then revolves inward, and the lock pin 5-2 that will be positioned at main lockhole 5-3 conflicts and tightens up.
Case lid is covered after on the casing, hinge means 4 one sides support the decrement relative fixed that plate 3 compresses elastic sealing element 2, and by regulating the tightness of locker 5, can suitably regulate the decrement that plate 3 compresses elastic sealing element 2 that supports of locker 5 one sides, make to support the decrement that plate 3 compresses elastic sealing element 2 each positions and be consistent substantially, in 1～1.5mm scope.
Above embodiment is to explanation of the present utility model and further explains, rather than to restriction of the present utility model, any modification of being done in interest field of the present utility model all falls into protection range of the present utility model.
Claims (5)
1. the hermetically-sealed construction of a stuffing box, comprise the annular receiving groove (1) that is positioned at the casing upper edge, be placed in the cyclic spring seal (2) in the holding tank (1), it is characterized in that: also comprise be located at that being used on the case lid compress elastic sealing element (2) support plate (3), the contact-making surface that supports plate (3) and elastic sealing element (2) is a plane, elastic sealing element (2) with support plate (3) and push against mutually by the hold down gag of being located on casing and the case lid, the hardness of elastic sealing element (2) is 45～50 °, the decrement of elastic sealing element (2) is 1～1.5mm, and the surface planarity that supports plate (3) is not more than 0.4.
2. the hermetically-sealed construction of stuffing box according to claim 1 is characterized in that: the cross section of described holding tank (1) is for semicircle.
3. the hermetically-sealed construction of stuffing box according to claim 1 is characterized in that: the seal of described elastic sealing element (2) for adopting the Ethylene Propylene Terpolymer material to make.
4. the hermetically-sealed construction of stuffing box according to claim 1 is characterized in that: described elastic sealing element (2) with support plate (3) and push against mutually by hinge means (4) and the locker (5) that is positioned at casing and case lid offside.
5. the hermetically-sealed construction of stuffing box according to claim 4, it is characterized in that: described locker (5) comprises lock body (5-1) and lock pin (5-2), be provided with in the lock body (5-1) and be used to the main lockhole (5-3) that allows lock pin (5-2) be inserted through, lock body (5-1) side is embedded with a metalwork (5-4), the sidewall of metalwork (5-4) place side is provided with the secondary lockhole (5-5) that connects with main lockhole (5-3), secondary lockhole (5-5) passes metalwork (5-4) and is provided with internal thread, be combined with trip bolt (5-6) in the secondary lockhole (5-5), lock pin (5-2) is externally threaded metal barred body for the lower end is provided with, and lock pin (5-2) is provided with the fastening nut (5-7) from main lockhole (5-3) bottom lock pin (5-2) is tightened up that screws with external screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201045586U CN202009556U (en) | 2011-04-08 | 2011-04-08 | Sealing structure of sealed case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201045586U CN202009556U (en) | 2011-04-08 | 2011-04-08 | Sealing structure of sealed case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202009556U true CN202009556U (en) | 2011-10-12 |
Family
ID=44751208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201045586U Expired - Fee Related CN202009556U (en) | 2011-04-08 | 2011-04-08 | Sealing structure of sealed case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202009556U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182825A (en) * | 2011-04-08 | 2011-09-14 | 宁波华缘玻璃钢电器制造有限公司 | Sealing structure for sealing box |
-
2011
- 2011-04-08 CN CN2011201045586U patent/CN202009556U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182825A (en) * | 2011-04-08 | 2011-09-14 | 宁波华缘玻璃钢电器制造有限公司 | Sealing structure for sealing box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111012 Termination date: 20120408 |