CN206608544U

CN206608544U - A kind of sealing structure

Info

Publication number: CN206608544U
Application number: CN201720353808.7U
Authority: CN
Inventors: 张剑飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-04-06
Filing date: 2017-04-06
Publication date: 2017-11-03
Anticipated expiration: 2027-04-06

Abstract

The utility model discloses a kind of sealing structure, sealed for the rotary shaft to plant equipment, including：Axle sleeve, it is arranged on the rotary shaft, and circumferentially direction offers at least one annular U type groove to the lateral wall of the axle sleeve；Fixed lid, it is removably attached in plant equipment, including is detachably connected and is respectively provided with two end cap portions of groove, and the madial wall of the groove offers storage tank, and storage tank is provided with least one U-shaped projection；After two end cap portions connections, the groove of two end cap portions cooperatively forms a rotary shaft and passes through hole, two storage tanks cooperatively form an axle sleeve accommodating cavity, the at least one U-shaped projection is sequentially embedded at least one annular U type groove, and insertion is further opened with the lateral wall of one of end cap portions to the filling passage of the axle sleeve accommodating cavity.The sealing structure that the utility model is provided improves the sealing effectiveness to the rotary shaft of plant equipment, and simple in construction, reduces production and the cost of overhaul of plant equipment.

Description

A kind of sealing structure

Technical field

The utility model is related to sealing structure technical field, more specifically, and the utility model is related to one kind and machinery is set Standby rotary shaft carries out sealed sealing structure.

Background technology

With the fast development of industry, study hotspot is sealed to for the plant equipment with rotating mechanism.It is existing The cost of rotation shaft mechanical seal is high, and this has resulted in the increase of plant equipment cost of manufacture and maintenance cost；Plant equipment Seal degree limit the use condition of its equipment, while the Rig up error of sealing structure and sealing and improper can make plant equipment Sealing structure easily damage；And must outaged equipment progress when the sealing structure of existing plant equipment is changed after damage Maintenance, it is more serious, obvious that this results in this loss when without the damage of standby or visual plant of mechanical rotation equipment.Rotating shaft simultaneously Input cost, maintenance cost are higher needed for the bigger sealing of diameter, but sealing effectiveness is poorer.

Utility model content

A purpose of the present utility model is to solve at least the above, and provides the advantage that at least will be described later.

The utility model also has a purpose to there is provided a kind of sealing structure, the sealing structure increase rotary shaft with it is close Effective sealing area between seal structure, simplifies Seal Design, so as to effectively be controlled on the premise of sealing property is ensured The manufacturing cost of plant equipment is made.

To achieve these goals, the utility model provides a kind of sealing structure, including：

Axle sleeve, it is set in the rotary shaft, and circumferentially direction offers at least one ring to the lateral wall of the axle sleeve Shape U-type groove；

Fixed lid, it is removably attached in the plant equipment, and the fixed lid includes being detachably connected and having Reeded two end cap portions, the madial wall of the groove offers storage tank, and the storage tank is U-shaped convex provided with least one Rise；After two end cap portions connections, the groove of two end cap portions cooperatively forms a rotary shaft and passes through hole, two storage tanks An axle sleeve accommodating cavity is cooperatively formed, at least one U-shaped projection is sequentially embedded at least one annular U type groove, wherein Insertion is further opened with the lateral wall of one end cap portions to the filling passage of the axle sleeve accommodating cavity.

At least one annular U type groove and at least one U-shaped raised combination in sealing structure described in the utility model Mazy sealing structure is realized, so as to increase effective sealing area between rotary shaft, axle sleeve and fixed lid, and is confused The sealing structure of palace formula, consumes the transmission of energy between rotary shaft and external environment condition, such as extraneous water or extraneous dust During by axle sleeve accommodating cavity, the maze-type structure cooperatively formed of U-shaped raised and annular U type groove, maze-type structure weakens energy Amount transmission, so that sealing effectiveness has been reached, while being filled with profit in the junction of axle sleeve accommodating cavity, U-shaped raised and annular U type groove Consistent lubricant so that form gapless sealing effectiveness between rotary shaft, axle sleeve and fixed lid.And can periodically be mended by filling passage Oil, it is ensured that the sealing effectiveness of the sealing structure, so as to greatly improve sealing property.

Preferably, wherein, in addition to：

Spacing jump ring, it is placed in the axle sleeve accommodating cavity, and is set in the rotary shaft, and the spacing jump ring is located at Side of the axle sleeve away from the plant equipment.

Axle sleeve in sealing structure described in the utility model is fixed on the rotary shaft by key, and is set on the outside of axle sleeve Put spacing jump ring, it is to avoid axle sleeve carries out self motion during rotary shaft is rotated, it is ensured that axle sleeve and rotary shaft it is same Shi Yundong.

Preferably, wherein, two end cap portions also offer oil seal groove respectively close to one end of the plant equipment, And after two end cap portions connections, two oil seal grooves cooperatively form an outside framework oil seal accommodating cavity for being used to house outside framework oil seal. The outside framework oil seal can prevent axle sleeve accommodating cavity, the lubricating grease of the junction filling of U-shaped raised and annular U type groove from entering machine In tool equipment, sealing property is further improved.

Preferably, wherein, the end face periphery for pressing close to plant equipment of two end cap portions extends outward one and prolonged Stretch and bolt hole is offered on wing, the extension wing, the bolt hole that two end cap portions are extended through by bolt on wing is removable It is fixed on unloading in the plant equipment.

Preferably, wherein, be provided with what is connected with the filling passage on the lateral wall of one of end cap portions Fuel filler neck.

Preferably, wherein, in addition to：

At least one O-ring, it is set in the rotary shaft, and positioned between the rotary shaft and the axle sleeve.

Preferably, wherein, at least one annular U type groove is identical with described at least one U-shaped raised quantity.

Preferably, wherein, at least one annular U type groove and described at least one U-shaped raised includes two.

Preferably, wherein, it is U-shaped raised that the depth of at least one annular U type groove is all higher than described at least one Highly, its difference is 1~10mm；The width of at least one annular U type groove is all higher than described at least one U-shaped raised width Degree, its difference is 1~10mm.U-shaped raised and annular U type is determined according to the occupation mode of the type of plant equipment and plant equipment The number and size of groove, so as to ensure that airtight quality.

The utility model at least includes following beneficial effect：

1st, sealing structure described in the utility model is applied widely, it is adaptable to the pump that is run under normal temperature state, blower fan, The sealing of the rotating machinerys such as motor, the sealing suitable for major diameter slow-speed of revolution equipment, the rotating machinery suitable for high dust atmosphere Sealing, the sealing suitable for rotating machinery under water and suitable for slurries convey or other gas transportation facilitieses shaft end it is close Envelope.

2nd, sealing structure described in the utility model by axle sleeve and fixed cap-shaped into labyrinth seal structure and fill out The lubricating grease filled inside labyrinth seal structure, can realize rotary shaft, axle sleeve and fixed cap-shaped into seal clearance reach Gapless sealing effectiveness, and can ensure to keep optimal sealing state by the sealed plant equipment moment.

3rd, sealing structure described in the utility model it is simple in construction, installation and removal convenience, service life length, drop significantly The production cost and maintenance cost of low plant equipment.

Further advantage of the present utility model, target and feature embody part by following explanation, and part will also pass through Research of the present utility model and practice are understood by the person skilled in the art.

Brief description of the drawings

Fig. 1 is the structural representation of the sealing structure described in the one of embodiment of the utility model；

Fig. 2 is that the structure that the sealing structure described in the one of embodiment of the utility model is arranged in plant equipment is shown It is intended to；

Fig. 3 is the top view of the sealing structure described in the one of embodiment of the utility model.

Embodiment

Below in conjunction with the accompanying drawings and embodiment is described in further detail to the utility model, to make people in the art Member can implement according to this with reference to specification word.

It should be appreciated that such as " having ", "comprising" and " comprising " term used herein are not precluded from one or many The presence or addition of individual other elements or its combination.

As shown in Figure 1, Figure 2 and Figure 3, a kind of sealing structure is provided in the one of embodiment of the utility model, this is close Seal structure is used to seal the rotary shaft 1 of plant equipment 8, is provided between plant equipment and sealing structure and is set in rotary shaft Bearing 9 on 1, the sealing structure includes：

Axle sleeve 2, it is set in the rotary shaft 1, and circumferentially direction offers at least one to the lateral wall of the axle sleeve 2 Annular U type groove 210；

Fixed lid 3, it is removably attached in the plant equipment 8, and the fixed lid 3 includes being detachably connected and Have reeded two end cap portions, the madial wall of the groove offers storage tank 310, and the storage tank 310 is provided with least One U-shaped raised 320；After two end cap portions connections, the groove of two end cap portions cooperatively forms a rotary shaft and passed through Hole 330, two storage tanks 310 cooperatively form an axle sleeve accommodating cavity, described at least one U-shaped raised 320 be sequentially embedded it is described extremely In a few annular U type groove 210, insertion adding to the axle sleeve accommodating cavity is further opened with the lateral wall of one of end cap portions Oily passage 4.At least one annular U type groove 210 is identical with described at least one U-shaped raised 320 quantity, as shown in figure 3, Two end cap portions are detachably fixed connection by fastening bolt 13.

At least one annular U type groove 210 and at least one U-shaped raised 320 in sealing structure described in the utility model Be implemented in combination with mazy sealing structure, so as to increase effective sealing surface between rotary shaft 1, axle sleeve 2 and fixed lid 3 Product, and mazy sealing structure consumes the transmission of energy between rotary shaft 1 and external environment condition, for example extraneous water or Person the external world dust by axle sleeve accommodating cavity, U-shaped raised 320 and annular U type groove 210 the maze-type structure cooperatively formed when, fan Palace formula structure weakens energy transmission, so that sealing effectiveness has been reached, while in axle sleeve accommodating cavity, U-shaped raised 320 and ring-type U The junction of type groove 210 is filled with lubricating grease so that gapless sealing effect is formed between rotary shaft 1, axle sleeve 2 and fixed lid 3 Really, the regular repairing of filling passage 4 can be passed through, it is ensured that the sealing effectiveness of the sealing structure, so as to greatly improve sealing property.

Wherein on the basis of one embodiment, the sealing structure also includes：

Spacing jump ring 5, it is placed in the axle sleeve accommodating cavity, and is set in the rotary shaft 1, the spacing jump ring 5 Positioned at the side of the axle sleeve 2 away from the plant equipment.Axle sleeve 2 is fixed in rotary shaft 1 by key 6, and in the outer of axle sleeve 2 Side sets spacing jump ring 5, it is to avoid axle sleeve 2 carries out self motion during rotary shaft 1 is rotated, it is ensured that axle sleeve 2 and rotation Rotating shaft 1 is moved simultaneously.

Also, two end cap portions also offer oil seal groove, and two institutes respectively close to one end of the plant equipment 8 State after end cap portions connection, two oil seal grooves cooperatively form an outside framework oil seal accommodating cavity for being used to house outside framework oil seal 7.The skeleton Oil sealing 7 can prevent axle sleeve accommodating cavity, U-shaped raised 320 and annular U type groove 210 junction filling lubricating grease enter machine In tool equipment, sealing property is further improved.

As shown in figure 1, extending outward an extension wing on the lateral wall of two end cap portions, opened on the extension wing Provided with bolt hole, the bolt hole that two end cap portions are extended through by bolt 10 on wing is removably attached to the machinery In equipment 8.The fuel filler neck 11 connected with the filling passage 4 is provided with the lateral wall of one of end cap portions.

As shown in figure 1, the sealing structure also includes：

At least one O-ring 12, it is set in the rotary shaft 1, and positioned at the rotary shaft 1 and the axle sleeve 2 it Between.

For example, at least one annular U type groove 210 and described at least one U-shaped raised 320 includes two.It is described The depth of at least one annular U type groove 210 is all higher than described at least one U-shaped raised 320 height, and its difference is 1~10mm； The width of at least one annular U type groove 210 is all higher than described at least one U-shaped raised 320 width, and its difference is 1~ 10mm.The number of U-shaped raised 320 and annular U type groove 210 is determined according to the occupation mode of the type of plant equipment and plant equipment And size, so as to ensure that airtight quality.

Although embodiment of the present utility model is disclosed as above, it is not restricted in specification and embodiment Listed to use, it can be applied to various suitable fields of the present utility model completely, for those skilled in the art, Other modification is easily achieved, therefore under the universal limited without departing substantially from claim and equivalency range, this reality Specific details is not limited to new and shown here as the legend with description.

Claims

1. a kind of sealing structure, is sealed for the rotary shaft to plant equipment, it is characterised in that including：

Axle sleeve, it is set in the rotary shaft, and circumferentially direction offers at least one annular U type to the lateral wall of the axle sleeve Groove；

Fixed lid, it is removably attached in the plant equipment, and the fixed lid includes being detachably connected and being respectively provided with recessed Two end cap portions of groove, the madial wall of the groove offers storage tank, and the storage tank is provided with least one U-shaped projection； After two end cap portions connections, the groove of two end cap portions cooperatively forms a rotary shaft by hole, and two storage tanks are matched somebody with somebody Close and form an axle sleeve accommodating cavity, and at least one U-shaped projection is sequentially embedded at least one annular U type groove, wherein Insertion is further opened with the lateral wall of one end cap portions to the filling passage of the axle sleeve accommodating cavity.

2. a kind of sealing structure according to claim 1, it is characterised in that also include：

Spacing jump ring, it is placed in the axle sleeve accommodating cavity, and is set in the rotary shaft, and the spacing jump ring is located at described Side of the axle sleeve away from the plant equipment.

3. a kind of sealing structure according to claim 1, it is characterised in that two end cap portions are set close to the machinery Standby one end is also offered after oil seal groove, and two end cap portions connections respectively, and two oil seal grooves, which cooperatively form one, to be used to hold Put the outside framework oil seal accommodating cavity of outside framework oil seal.

4. a kind of sealing structure according to claim 1, it is characterised in that two end cap portions press close to plant equipment End face periphery extend outward bolt hole offered on an extension wing, the extension wing, two end cap portions pass through spiral shell The bolt hole that bolt is extended through on wing is removably attached in the plant equipment.

5. a kind of sealing structure according to claim 1, it is characterised in that on the lateral wall of one of end cap portions It is provided with the fuel filler neck connected with the filling passage.

6. a kind of sealing structure according to claim 1, it is characterised in that also include：

7. a kind of sealing structure according to claim 1, it is characterised in that at least one annular U type groove and described At least one U-shaped raised quantity is identical.

8. a kind of sealing structure according to claim 7, it is characterised in that at least one annular U type groove and described At least one is U-shaped raised including two.

9. a kind of sealing structure according to claim 1, it is characterised in that the depth of at least one annular U type groove Described at least one U-shaped raised height is all higher than, its difference is 1~10mm；The width of at least one annular U type groove is equal Raised width U-shaped more than described at least one, its difference is 1~10mm.