CN105202197A - Gas seal structure and gas seal method of vibratory mixer - Google Patents

Gas seal structure and gas seal method of vibratory mixer Download PDF

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Publication number
CN105202197A
CN105202197A CN201510672290.9A CN201510672290A CN105202197A CN 105202197 A CN105202197 A CN 105202197A CN 201510672290 A CN201510672290 A CN 201510672290A CN 105202197 A CN105202197 A CN 105202197A
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CN
China
Prior art keywords
plate
ring
sealing
spring housing
stationary ring
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
CN201510672290.9A
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Chinese (zh)
Inventor
赵悟
武甜
董晨希
田建涛
林亮亮
吕兴坤
高阳
王新亚
蒋文志
刘云飞
李晨光
曹鑫鑫
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Changan University
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Changan University
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Filing date
Publication date
Application filed by Changan University filed Critical Changan University
Priority to CN201510672290.9A priority Critical patent/CN105202197A/en
Publication of CN105202197A publication Critical patent/CN105202197A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a gas seal structure and gas seal method of a vibratory mixer. The gas seal structure comprises a mixer shaft, a moveable ring, a stationary ring, a connecting plate, a machine frame, a gasket, a grooved disk spring, a disk spring seat, a spring housing, a seal ring and the like. The end surface seal and dry gas seal are combined, and the end surfaces of the stationary ring and movable ring are attached, thereby achieving certain seal effect. Besides, gas with certain pressure acts on the sealing surface to form the dry gas seal, so that the sealing surface still has the sealing effect when being subjected to certain disturbance. The pretightened grooved disk spring has certain automatic compensation function, and thus, can keep the end surface specific pressure of the sealing end surface stable. The gas seal structure has the advantages of simple structure and favorable sealing effect, and enhances the shaft end sealing reliability of the vibratory mixer.

Description

A kind of air-tight structure of oscillating mixer and hermetic seal method thereof
[technical field]
The present invention relates to a kind of seal arrangement, particularly relate to a kind of air-tight structure and hermetic seal method thereof of oscillating mixer.
[background technique]
The shaft end seal of concrete mixer adopts float grease seal static sealing structure mostly both at home and abroad at present.Although float grease seal can play certain seal action, but the work under bad environment of stirrer, between the transmission part that cement slurry in mixture very easily enters into tank body both sides and fixed component, and then enter in seal arrangement, floating sealing ring is worn and torn aggravate, secondly, grease seal operating cost is high, the shaft end seal also had adopts the multiple-sealed mode combined, but in sealing configuration, as long as first sealing configuration is destroyed, there is sealing configurations many more also of no avail below, so it is simple to seek a kind of structure, cost is low, the seal arrangement of good seal performance has very important realistic meaning.
In addition, the defect of existing shaft end seal mainly contains following 2 points: one is the impact that stirring shafting vibration can not be avoided to produce Sealing, and two is that first sealing does not possess self-compensating function, and after wearing and tearing, sealing surface cannot recover to fit tightly state.Therefore normal concrete stirrer shaft end sealing structure is not suitable for the dynamic axle head sealing problem of solution oscillating mixer.
[summary of the invention]
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of air-tight structure and hermetic seal method thereof of oscillating mixer is provided, solves service time in prior art short, the problem that maintenance cost is high.
For achieving the above object, the technical solution used in the present invention is:
An air-tight structure for oscillating mixer, comprises the spring housing, connecting plate, rotating ring and the stationary ring that are set in stirring shaft end, and described rotating ring is arranged on frame side and is fixed on stirring shaft; Described spring housing and connecting plate are arranged on frame opposite side, and connecting plate is arranged between frame and spring housing; Described connecting plate is enclosed within stationary ring, spring housing and connecting plate, frame are tightly connected, and form a Seal cage, arrange elastic component in Seal cage between spring housing, stationary ring, connecting plate, elastic component one end contacts with spring housing, and the other end contacts with stationary ring; Spring housing is provided with the first aperture be communicated with Seal cage, the first aperture connects suction tude by hose coupling, described stationary ring is arranged vertically the second orifice be communicated with Seal cage; Stationary ring and rotating ring end face fit formation sealing surface, and described sealing surface blanketing gas carries out hermetic seal to the axle head of stirrer.
Arrange the first pad between described spring housing and connecting plate, arrange the second pad between frame and connecting plate, spring housing, the first pad, connecting plate, the second pad and frame are fixedly connected sequentially by the bolt of a circle.
Described elastic component comprises disc spring seat and fluting disc spring, disc spring seat, fluting disc spring is equipped with successively in the groove of spring housing, the fluting disc spring mode that after adopting multi-disc series connection, positive and negative alternate connects again is arranged, then be arranged on the disc spring seat on spring housing, fluting disc spring and stationary ring Elastic Contact.
The outside of described spring housing is evenly equipped with pretension bolt, and pretension bolt and disc spring seated connection touch cross-notching disc spring and carry out pretension.
The end face of described stationary ring has several equally distributed shallow slots, and each second orifice is distributed in shallow slot.
Described stationary ring is hierarchic structure, comprises large ladder and little ladder; The center of described connecting plate is groove, and the little ladder of stationary ring passes the mounting hole of connecting plate, and large ladder is arranged in groove, and connecting plate mounting hole diameter is greater than the diameter of little ladder, is less than the diameter of large ladder; The width of described stationary ring is greater than connecting plate width.
The external diameter of described rotating ring is greater than the diameter of rack mounting apertures; Rotating ring outer ring is evenly distributed with multiple screw vertically, and rotating ring is fixed by screws on stirring shaft.
The inner ring of described spring housing is connected with stirring shaft by seal ring.
A kind of hermetic seal method of air-tight structure of oscillating mixer, gas enters the first aperture from suction tude, and then arrives Seal cage, and the gas entering Seal cage acts on sealing surface by second orifice again, between rotating ring and stationary ring, form gas film sealing, and then form dry gas seals.
As a further improvement on the present invention, sealing surface produces face pressure by the precompression of fluting butterfly spring, regulates the screw-in length of pretension bolt to carry out the face pressure of adjustment and compensating sealing surface.
The present invention compared with prior art has the following advantages:
What the present invention adopted is pneumostop, from energy angle, greatly reduces user cost.The present invention is reasonable in design, adopt connecting plate, spring housing, stationary ring and rotating ring, structure is simple, adopt pneumostop, high pressure draught can blow away the mud be mixed in sealing channel, reduces the wearing and tearing of part, in addition, can also when sealing surface is disturbed the still Packed effect of tool, good seal performance.
Further, the setting of pretension bolt regulates the screw-in length of pretension bolt as required to carry out and regulates and compensate, and then sealing surface produces face pressure by the precompression of fluting butterfly spring.
Hermetic seal method of the present invention is that the gas with certain pressure intensity is arrived Seal cage from suction tude, the gas entering Seal cage acts on sealing surface by second orifice again, and then formation dry gas seals, the impurity entering sealing surface can be blown away, and the effect of sealing can also be reached when sealing surface is disturbed.
[accompanying drawing explanation]
Fig. 1 is sealing structure of shaft end schematic diagram of the present invention;
Fig. 2 is the partial enlarged drawing at A position in Fig. 1;
Fig. 3 is the partial enlarged drawing at B position in Fig. 1;
Fig. 4 is the structural representation of stationary ring of the present invention;
Fig. 5 is that the present invention slots the structural representation of disc spring;
Fig. 6 is the cross-sectional view of spring housing of the present invention;
Fig. 7 is the cross-sectional view of connecting plate of the present invention.
In figure: 1 is stirring shaft: 2 is rotating ring; 3 is seal ring; 4 is stationary ring; 5 is frame; 6 is the second pad; 7 is the first pad; 8 is connecting plate; 9 is bolt; 10 is spring housing; 11 is the first aperture; 12 is hose coupling; 13 is pretension bolt; 14 is disc spring seat; 15 is fluting disc spring; 16 is screw; 17 is sealing surface; 4-1 is shallow slot; 4-2 is second orifice.
[embodiment]
Below in conjunction with the drawings and specific embodiments, the present invention will be further described, the invention is not restricted to following examples.
As shown in Figure 1, Figure 2 and Figure 3, the air-tight structure of a kind of oscillating mixer of the present invention, comprises connecting plate 8, spring housing 10, stationary ring 4 and rotating ring 2, and the outer ring of rotating ring 2 is evenly distributed with screw 16, and rotating ring 2 is fixed on stirring shaft 1 by screw 16.Stationary ring 4 and rotating ring 2 end face fit, this surface of contact is sealing surface 17, stationary ring 4 and spring housing 10, connecting plate 8 matches, connecting plate 8 and frame 5, spring housing 10 is connected, the outside of spring housing 10 has the bolt 9 of a circle, first pad 7 is set between spring housing 10 and connecting plate 8, second pad 6 is set between frame 5 and connecting plate 8, bolt 9 is by spring housing 10, first pad 7, connecting plate 8, second pad 6, frame 5 is connected successively, disc spring seat 14 and fluting disc spring 15 is equipped with successively in the groove of spring housing 10, one end of fluting disc spring 15 heads on stationary ring 4, equally distributed pretension bolt 13 is vertically had in the outside of spring housing 10, pretension bolt 13 carries out pretension by disc spring seat 14 cross-notching disc spring 15.
As shown in Figure 1 and Figure 4, stationary ring 4 is hierarchic structure, comprises large ladder and little ladder; Stationary ring 4 upper part cross section is L-type, and its end face has several equally distributed shallow slot 4-1, second orifice 4-2 is distributed in shallow slot 4-1.
As shown in Figure 1 and Figure 5, fluting disc spring 15 mode that after adopting multi-disc to connect, positive and negative alternate connects again is arranged, is then placed on the disc spring seat 14 of spring housing 10, and the inner ring of spring housing 10 is connected with stirring shaft 1 by seal ring 3.Form a Seal cage between spring housing 10, stationary ring 4, connecting plate 8, the first aperture 11 is tapped holes, tapped hole is connected to hose coupling 12, and hose coupling 12 is connected to suction tude above.
As shown in Figure 2 and Figure 7, the center of connecting plate 8 is groove, and the little ladder of stationary ring 4 passes the mounting hole of connecting plate 8, and large ladder is arranged in groove, and connecting plate 8 mounting hole diameter is greater than the diameter of little ladder, is less than the diameter of large ladder.
Working principle of the present invention is: the gas with certain pressure intensity arrives the first aperture 11 from suction tude, and then arrival Seal cage, the gas entering Seal cage acts on sealing surface 17 by second orifice 4-2 again, on this face, gas film sealing is formed between rotating ring 2 and stationary ring 4, and then formation dry gas seals, the impurity entering sealing surface 17 can be blown away, and the effect of sealing can also be reached when sealing surface 17 is disturbed.Meanwhile, sealing surface 17 produces face pressure by the precompression of fluting butterfly spring 15, regulates the screw-in length of pretension bolt 13 to carry out regulating and compensating as required.

Claims (10)

1. the air-tight structure of an oscillating mixer, it is characterized in that: comprise the spring housing (10), connecting plate (8), rotating ring (2) and the stationary ring (4) that are set in stirring shaft (1) end, described rotating ring (2) is arranged on frame (5) side and is fixed on stirring shaft (1); Described spring housing (10) and connecting plate (8) are arranged on frame (5) opposite side, and connecting plate (8) is arranged between frame (5) and spring housing (10); Described connecting plate (8) is enclosed within stationary ring (4), spring housing (10) and connecting plate (8), frame (5) are tightly connected, a Seal cage is formed between spring housing (10), stationary ring (4), connecting plate (8), in Seal cage, elastic component is set, elastic component one end contacts with spring housing (10), and the other end contacts with stationary ring (4); Spring housing (10) is provided with the first aperture (11) be communicated with Seal cage, first aperture (11) connects suction tude by hose coupling (12), described stationary ring (4) is arranged vertically the second orifice (4-2) be communicated with Seal cage; Stationary ring (4) and rotating ring (2) end face fit and form sealing surface (17), and described sealing surface (17) blanketing gas carries out hermetic seal to the axle head of stirrer.
2. the air-tight structure of a kind of oscillating mixer according to claim 1, it is characterized in that: between described spring housing (10) and connecting plate (8), the first pad (7) is set, arrange the second pad (6) between frame (5) and connecting plate (8), spring housing (10), the first pad (7), connecting plate (8), the second pad (6) and frame (5) are fixedly connected sequentially by the bolt (9) of a circle.
3. the air-tight structure of a kind of oscillating mixer according to claim 1, it is characterized in that: described elastic component comprises disc spring seat (14) and fluting disc spring (15), disc spring seat (14), fluting disc spring (15) is equipped with successively in the groove of spring housing (10), fluting disc spring (15) mode that after adopting multi-disc series connection, positive and negative alternate connects again is arranged, then be arranged on the disc spring seat (14) on spring housing (10), fluting disc spring (15) and stationary ring (4) Elastic Contact.
4. the air-tight structure of a kind of oscillating mixer according to claim 3, it is characterized in that: the outside of described spring housing (10) is evenly equipped with pretension bolt (13), pretension bolt (13) contacts cross-notching disc spring (15) with disc spring seat (14) and carries out pretension.
5. the air-tight structure of a kind of oscillating mixer according to claim 1, it is characterized in that: the end face of described stationary ring (4) has several equally distributed shallow slots (4-1), and each second orifice (4-2) is distributed in shallow slot (4-1).
6. the air-tight structure of a kind of oscillating mixer according to claim 1, is characterized in that: described stationary ring (4) is hierarchic structure, comprises large ladder and little ladder; The center of described connecting plate (8) is groove, the little ladder of stationary ring (4) passes the mounting hole of connecting plate (8), large ladder is arranged in groove, and connecting plate (8) mounting hole diameter is greater than the diameter of little ladder, is less than the diameter of large ladder; The width of described stationary ring (4) is greater than connecting plate (8) width.
7. the air-tight structure of a kind of oscillating mixer according to claim 1, is characterized in that: the external diameter of described rotating ring (2) is greater than the diameter of frame (5) mounting hole; Rotating ring (2) outer ring is evenly distributed with multiple screw (16) vertically, and rotating ring (2) is fixed on stirring shaft (1) by screw (16).
8. the air-tight structure of a kind of oscillating mixer according to claim 1, is characterized in that: the inner ring of described spring housing (10) is connected with stirring shaft (1) by seal ring (3).
9. the hermetic seal method of the air-tight structure of a kind of oscillating mixer according to claim 1, it is characterized in that: gas enters the first aperture (11) from suction tude, and then arrival Seal cage, the gas entering Seal cage acts on sealing surface (17) by second orifice (4-2) again, between rotating ring (2) and stationary ring (4), form gas film sealing, and then form dry gas seals.
10. the hermetic seal method of the air-tight structure of oscillating mixer according to claim 9, it is characterized in that: sealing surface (17) produces face pressure by the precompression of fluting butterfly spring (15), regulate the screw-in length of pretension bolt (13) to carry out the face pressure of adjustment and compensating sealing surface (17).
CN201510672290.9A 2015-10-16 2015-10-16 Gas seal structure and gas seal method of vibratory mixer Pending CN105202197A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510672290.9A CN105202197A (en) 2015-10-16 2015-10-16 Gas seal structure and gas seal method of vibratory mixer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510672290.9A CN105202197A (en) 2015-10-16 2015-10-16 Gas seal structure and gas seal method of vibratory mixer

Publications (1)

Publication Number Publication Date
CN105202197A true CN105202197A (en) 2015-12-30

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106704599A (en) * 2017-04-01 2017-05-24 北京国电龙源环保工程有限公司 Sealing device of rotation apparatus
CN109973662A (en) * 2019-04-13 2019-07-05 江西理工大学南昌校区 A kind of horizontal Three Degree Of Freedom low speed of high-low temperature chamber wears case axis gas-tight sealing
CN111022651A (en) * 2019-12-02 2020-04-17 东方电气集团东方汽轮机有限公司 Shaft end sealing structure and method

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08296745A (en) * 1995-04-26 1996-11-12 Mitsubishi Heavy Ind Ltd Mechanical seal
JP2001012614A (en) * 1999-07-02 2001-01-16 Nippon Pillar Packing Co Ltd Noncontact type shaft seal device
DE19950705A1 (en) * 1999-10-21 2001-04-26 Volkswagen Ag Gas seal for sealing gap between crankshaft and housing in IC engine comprises sealing ring biased by springs against shaft collar and which has gas channels forming air cushion between seal and shaft collar when shaft rotates
CN1133834C (en) * 1997-11-21 2004-01-07 日本皮拉工业株式会社 Static pressure noncontact gas seal
EP1079156B1 (en) * 1999-08-16 2009-05-13 Nippon Pillar Packing Co., Ltd. Non-contact type mechanical seal
CN102494139A (en) * 2011-12-16 2012-06-13 山东米科思机械设备有限公司 Novel shaft-end sealing structure of concrete mixer
CN202336931U (en) * 2011-12-16 2012-07-18 山东米科思机械设备有限公司 Oil-free shaft end sealing structure of concrete stirrer
JP2012167696A (en) * 2011-02-10 2012-09-06 Nippon Pillar Packing Co Ltd Non-contact type seal device
CN102853085A (en) * 2012-09-24 2013-01-02 北京化工大学 Anti-jamming device and anti-jamming method for sealing gas end faces
CN205047849U (en) * 2015-10-16 2016-02-24 长安大学 Gas seal structure of vibration mixer

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08296745A (en) * 1995-04-26 1996-11-12 Mitsubishi Heavy Ind Ltd Mechanical seal
CN1133834C (en) * 1997-11-21 2004-01-07 日本皮拉工业株式会社 Static pressure noncontact gas seal
JP2001012614A (en) * 1999-07-02 2001-01-16 Nippon Pillar Packing Co Ltd Noncontact type shaft seal device
EP1079156B1 (en) * 1999-08-16 2009-05-13 Nippon Pillar Packing Co., Ltd. Non-contact type mechanical seal
DE19950705A1 (en) * 1999-10-21 2001-04-26 Volkswagen Ag Gas seal for sealing gap between crankshaft and housing in IC engine comprises sealing ring biased by springs against shaft collar and which has gas channels forming air cushion between seal and shaft collar when shaft rotates
JP2012167696A (en) * 2011-02-10 2012-09-06 Nippon Pillar Packing Co Ltd Non-contact type seal device
CN102494139A (en) * 2011-12-16 2012-06-13 山东米科思机械设备有限公司 Novel shaft-end sealing structure of concrete mixer
CN202336931U (en) * 2011-12-16 2012-07-18 山东米科思机械设备有限公司 Oil-free shaft end sealing structure of concrete stirrer
CN102853085A (en) * 2012-09-24 2013-01-02 北京化工大学 Anti-jamming device and anti-jamming method for sealing gas end faces
CN205047849U (en) * 2015-10-16 2016-02-24 长安大学 Gas seal structure of vibration mixer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106704599A (en) * 2017-04-01 2017-05-24 北京国电龙源环保工程有限公司 Sealing device of rotation apparatus
CN109973662A (en) * 2019-04-13 2019-07-05 江西理工大学南昌校区 A kind of horizontal Three Degree Of Freedom low speed of high-low temperature chamber wears case axis gas-tight sealing
CN111022651A (en) * 2019-12-02 2020-04-17 东方电气集团东方汽轮机有限公司 Shaft end sealing structure and method

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Application publication date: 20151230

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