WO2020038188A1 - 内外套筒螺旋式密封装置 - Google Patents

内外套筒螺旋式密封装置 Download PDF

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Publication number
WO2020038188A1
WO2020038188A1 PCT/CN2019/098080 CN2019098080W WO2020038188A1 WO 2020038188 A1 WO2020038188 A1 WO 2020038188A1 CN 2019098080 W CN2019098080 W CN 2019098080W WO 2020038188 A1 WO2020038188 A1 WO 2020038188A1
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Prior art keywords
sealing
cover
fixed
sealing cover
cylinder
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PCT/CN2019/098080
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English (en)
French (fr)
Inventor
盛富春
盛楠
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烟台盛利达工程技术有限公司
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Publication of WO2020038188A1 publication Critical patent/WO2020038188A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
    • B28C5/4203—Details; Accessories
    • B28C5/4262—Closures; Sealing mechanisms

Definitions

  • the invention relates to a rotary sealing device applied to a concrete mixer truck.
  • the existing rotary sealing technology mainly seals the inlet and outlet of the mixing bucket.
  • the invention proposes an inner and outer sleeve spiral seal device, the purpose of which is to improve the sealing effect and avoid leakage.
  • An inner and outer sleeve spiral sealing device is used for the rotary seal of a mixer truck.
  • the mixer truck includes a mixer bucket installed on the vehicle body and capable of rotating relative to the vehicle body, and a mixer bucket installed on the vehicle body and capable of rotating relative to the vehicle body.
  • a moving moving part, a sealing cover is installed on the moving part through a slewing support, and the outer edge of the sealing cover is in contact with the outer edge of the outlet of the mixing bucket so that the sealing cover moves relative to the mixing bucket under the driving of the mixing bucket
  • the component rotates, a through hole is opened in the middle of the sealing cover, and a feeding hopper is also installed on the moving component, characterized in that the spiral seal device of the inner and outer sleeve includes a rotating cylinder installed on the sealing cover and a The fixed inner cylinder at the exit of the feeding hopper; the fixed inner cylinder passes through the central hole of the slewing support and the through hole of the sealing cover and is set in the rotating cylinder for conveying the materials in the feeding hopper to the mixing barrel; There is a gap between the inner wall of the rotating cylinder and the outer wall of the fixed inner cylinder, and a spiral blade is provided on the inner wall of the rotary cylinder.
  • a sealing member is further provided between the rotating cylinder and the fixed inner cylinder, and the sealing member is located outside the spiral blade.
  • the sealing member includes a retaining ring, a rubber ring, and a sealing ring arranged in order from the inside to the outside.
  • the moving part includes a fixed cover, the fixed ring of the slewing support and the feeding hopper are both mounted on the fixed cover, and a gap is left between the outer end of the rotating cylinder and the fixed cover, so
  • the fixed cover is provided with an oil injection hole for injecting lubricating oil to the sealing member.
  • the present invention Compared with the prior art, the present invention has the following positive effects: (1) The present invention adopts a sleeve type structure, and a spiral blade is provided at the gap between the sleeves to follow the rotation of the mixing bucket and the sealing cover, and uses the thrust generated during the rotation to move the concrete toward The mixing bucket is pushed in the direction to avoid concrete leakage and improve the sealing effect. (2) The present invention eliminates the feeding barrel in the mixing bucket. The fixed inner barrel connected to the feeding bucket directly sends the material into the mixing bucket, and the sealing cover is opened. When closed, the sealing device moves with the moving parts as a whole, no leakage will occur, and the seal will not be tight due to the elastic stress of the sealing parts. (3) A sealing device is also provided at the gap of the sleeve structure to further improve the seal. effect.
  • FIG. 1 is a schematic structural diagram of the present invention.
  • FIG. 2 is a schematic diagram of the application of the present invention to the tail of a mixing bucket.
  • an inner and outer sleeve spiral seal device is used for the rotary seal of a mixer truck.
  • the mixer truck adopts a new type of hollow shaft rotary sealing structure proposed by the patent "Hollow shaft rotary sealed concrete mixing transport vehicle” with the publication number of CN107344401A:
  • the mixer truck includes a mixing barrel installed on the vehicle body and capable of rotating relative to the vehicle body.
  • a moving part mounted on the vehicle body and capable of moving relative to the vehicle body
  • a sealing cover 1 is mounted on the moving part through a slewing support 2, and an outer edge of the sealing cover 1 is in contact with an outer edge of the outlet of the mixing bucket
  • a sealing element is provided at the contact point to realize sealing on the one hand and to rotate the sealing cover 1 with the stirring barrel relative to the moving part under the driving of the stirring barrel.
  • a through hole is opened in the middle of the sealing cover 1 and the moving part is
  • a feed hopper 3 is also installed for conveying materials into the mixing tank.
  • the moving part may be rotated relative to the vehicle body, or may be moved back and forth relative to the vehicle body.
  • the specific structure is described in the patent “Hollow shaft rotary sealed concrete mixer truck” published in CN107344401A, which is not described here. To repeat.
  • This embodiment is implemented on the basis of the above structure, and the purpose is to improve the rotary sealing performance.
  • the specific structure is:
  • the inner and outer sleeve spiral sealing device includes a rotating cylinder 9 installed on the sealing cover 1 and a fixed inner cylinder 10 installed at the outlet of the feeding hopper 3, eliminating the original feeding cylinder in the mixing barrel;
  • the cylinder 10 is extended so that it passes through the center hole of the slewing support 2 and the through hole of the sealing cover 1 and is set in the rotating cylinder 9 to directly transfer the materials in the feeding hopper 3 to the mixing barrel;
  • the inner wall of the rotating cylinder 9 There is a gap with the outer wall of the fixed inner cylinder 10, and a spiral blade 8 is provided on the inner wall of the rotating cylinder 9.
  • the spiral blade 8 may be made of metal, rubber or other materials.
  • the spiral blade 8 follows the rotation of the mixing bucket and the sealing cover 1, and uses the thrust generated during the rotation to push the concrete in the direction of the mixing bucket to prevent concrete leakage and prevent it from entering the slewing support 2 to improve the sealing effect.
  • a sealing member is further provided between the rotating cylinder 9 and the fixed inner cylinder 10, and the sealing member is located outside the spiral blade 8, that is, between the spiral blade 8 and the slewing support 2.
  • the sealing member includes a retaining ring 7, a rubber ring 6, and two sets of sealing rings 5 arranged in order from the inside to the outside.
  • the moving part includes a fixed cover, the fixed ring of the slewing support 2 and the feeding hopper 3 are both mounted on the fixed cover, and a gap is left between the outer end of the rotating cylinder 9 and the fixed cover to avoid it. Friction with fixed cover.
  • the fixing cover is provided with an oil injection hole 4 for injecting lubricating oil to the sealing member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Accessories For Mixers (AREA)

Abstract

一种内外套筒螺旋式密封装置，包括安装在密封盖(1)上的旋转筒(9)和安装在进料斗(3)出口处的固定内筒(10)；所述固定内筒(10)穿过回转支撑(2)的中心孔和密封盖(1)的通孔套装于旋转筒(9)内，用于将进料斗(3)中的物料输送至搅拌桶中；所述旋转筒(9)内壁与固定内筒(10)外壁之间具有缝隙，所述旋转筒(9)内壁上盘设有螺旋叶片(8)。采用套筒式结构，利用回转时产生的推力将混凝土向搅拌桶方向推送，避免混凝土泄漏，提升密封效果；同时还取消了搅拌桶中的进料筒，由进料斗(3)所连接的固定内筒(10)直接将物料送入搅拌桶中，密封盖(1)开闭时不会产生泄漏，也不会因密封部件的弹性应力导致密封不严。

Description

内外套筒螺旋式密封装置 技术领域
本发明涉及一种应用于混凝土搅拌车上的回转密封装置。
 背景技术
目前的搅拌车大多是敞口的，存在的问题是保温保湿性不好，雨水容易进入，物料洒漏，行车不安全，运输的混凝土质量不容易保证。
已有的回转密封技术，主要是对搅拌桶进出料口进行密封，密封形式有两种，一种是径向密封，一种是端面密封。由于搅拌桶的回转密封是对水泥砂石浆料的大口径、高相对线速度的回转密封，因此它的磨损是比较大的，而且该类密封不能保证回转轴承的防泥防水，影响轴承的正常使用，增加磨损，甚至失效。而且，还存在重量大，维护保养工作量大的问题。
为解决上述问题，烟台盛利达工程技术有限公司于2017年08月29日申请的、公告号为CN107344401A的专利《中空轴回转密封的混凝土搅拌运输车》提出了一种新式中空轴回转密封机构，将搅拌桶的密封盖设置成随搅拌桶筒体回转的结构，密封部分在搅拌桶的桶口斜面处。
但是，由于搅拌桶的中心料桶的支撑和回转密封弹性作用力的存在，常导致密封盖不能很好地闭合，密封盖和搅拌桶之间、以及回转密封处都会存在泄漏，尤其是回转密封处泄漏的混凝土将影响回转支撑部分的正常工作，导致其磨损失效。
 技术问题
本发明提出了一种内外套筒螺旋式密封装置，其目的在于：提升密封效果，避免泄漏。
 技术解决方案
一种内外套筒螺旋式密封装置，用于搅拌车的回转密封，所述搅拌车包括安装在车体上并能够相对于车体回转的搅拌桶以及安装在车体上并能够相对于车体移动的移动部件，所述移动部件上通过回转支撑安装有密封盖，所述密封盖外边缘与所述搅拌桶出口外边缘相接触以使密封盖在搅拌桶的驱动下随搅拌桶相对于移动部件回转，所述密封盖中部开设有通孔，所述移动部件上还安装有进料斗，其特征在于：所述内外套筒螺旋式密封装置包括安装在密封盖上的旋转筒和安装在进料斗出口处的固定内筒；所述固定内筒穿过回转支撑的中心孔和密封盖的通孔套装于旋转筒内，用于将进料斗中的物料输送至搅拌桶中；所述旋转筒内壁与固定内筒外壁之间具有缝隙，所述旋转筒内壁上盘设有螺旋叶片。
作为本发明的进一步改进：所述旋转筒与固定内筒之间还设有密封部件，所述密封部件位于螺旋叶片的外侧。
作为本发明的进一步改进：所述密封部件包括由内侧向外侧依次布置的挡圈、橡胶圈和密封圈。
作为本发明的进一步改进：所述移动部件包括固定盖，所述回转支撑的固定环以及进料斗均安装在固定盖上，所述旋转筒的外端与固定盖之间留有间隙，所述固定盖上设有注油孔，用于为密封部件注润滑油。
 有益效果
相对于现有技术，本发明具有以下积极效果：（1）本发明采用套筒式结构，在套筒间隙处设置跟随搅拌桶和密封盖回转的螺旋叶片，利用回转时产生的推力将混凝土向搅拌桶方向推送，避免混凝土泄漏，提升密封效果；（2）本发明取消了搅拌桶中的进料筒，由进料斗所连接的固定内筒直接将物料送入搅拌桶中，密封盖开闭时，本密封装置整体跟随移动部件一同运动，不会产生泄漏，也不会因密封部件的弹性应力导致密封不严；（3）套筒结构的缝隙处还设置有密封装置，进一步提升密封效果。
 附图说明
图1为本发明的结构示意图。
图2为本发明应用在搅拌桶尾部的示意图。
 本发明的最佳实施方式
下面结合附图详细说明本发明的技术方案：
如图1和2，一种内外套筒螺旋式密封装置，用于搅拌车的回转密封。所述搅拌车采用公告号为CN107344401A的专利《中空轴回转密封的混凝土搅拌运输车》所提出的新式中空轴回转密封结构：搅拌车包括安装在车体上并能够相对于车体回转的搅拌桶以及安装在车体上并能够相对于车体移动的移动部件，所述移动部件上通过回转支撑2安装有密封盖1，所述密封盖1外边缘与所述搅拌桶出口外边缘相接触，接触处设有密封元件，一方面实现密封，另一方面使密封盖1在搅拌桶的驱动下随搅拌桶相对于移动部件回转，所述密封盖1中部开设有通孔，所述移动部件上还安装有进料斗3，用于向搅拌桶内输送物料。
所述移动部件可以是相对于车体转动，也可以是相对于车体前后移动，具体结构在公告号CN107344401A的专利《中空轴回转密封的混凝土搅拌运输车》中有所记载，在此不做赘述。
本实施例是在上述结构基础上实施的，目的在于提高回转密封性能。具体结构为：
所述内外套筒螺旋式密封装置包括安装在密封盖1上的旋转筒9和安装在进料斗3出口处的固定内筒10，取消搅拌桶中原有的进料筒；将所述固定内筒10进行延长，使之穿过回转支撑2的中心孔和密封盖1的通孔套装于旋转筒9内，直接将进料斗3中的物料输送至搅拌桶中；所述旋转筒9内壁与固定内筒10外壁之间具有缝隙，所述旋转筒9内壁上盘设有螺旋叶片8。
所述螺旋叶片8可以是金属、橡胶或其它材质。螺旋叶片8跟随搅拌桶和密封盖1回转，利用回转时产生的推力将混凝土向搅拌桶方向推送，避免混凝土泄漏，阻止其进入回转支撑2处，提升密封效果。
为进一步提升密封效果，在所述旋转筒9与固定内筒10之间还设有密封部件，所述密封部件位于螺旋叶片8的外侧，即位于螺旋叶片8和回转支撑2之间。
所述密封部件包括由内侧向外侧依次布置的挡圈7、橡胶圈6和两套密封圈5。
进一步的，所述移动部件包括固定盖，所述回转支撑2的固定环以及进料斗3均安装在固定盖上，所述旋转筒9的外端与固定盖之间留有间隙，避免其与固定盖之间摩擦。所述固定盖上设有注油孔4，用于为密封部件注润滑油。

Claims (4)

  1. 内外套筒螺旋式密封装置，用于搅拌车的回转密封，所述搅拌车包括安装在车体上并能够相对于车体回转的搅拌桶以及安装在车体上并能够相对于车体移动的移动部件，所述移动部件上通过回转支撑（2）安装有密封盖（1），所述密封盖（1）外边缘与所述搅拌桶出口外边缘相接触以使密封盖（1）在搅拌桶的驱动下随搅拌桶相对于移动部件回转，所述密封盖（1）中部开设有通孔，所述移动部件上还安装有进料斗（3），其特征在于：所述内外套筒螺旋式密封装置包括安装在密封盖（1）上的旋转筒（9）和安装在进料斗（3）出口处的固定内筒（10）；所述固定内筒（10）穿过回转支撑（2）的中心孔和密封盖（1）的通孔套装于旋转筒（9）内，用于将进料斗（3）中的物料输送至搅拌桶中；所述旋转筒（9）内壁与固定内筒（10）外壁之间具有缝隙，所述旋转筒（9）内壁上盘设有螺旋叶片（8）。
  2. 如权利要求1所述的内外套筒螺旋式密封装置，其特征在于：所述旋转筒（9）与固定内筒（10）之间还设有密封部件，所述密封部件位于螺旋叶片（8）的外侧。
  3. 如权利要求2所述的内外套筒螺旋式密封装置，其特征在于：所述密封部件包括由内侧向外侧依次布置的挡圈（7）、橡胶圈（6）和密封圈（5）。
  4. 如权利要求2或3所述的内外套筒螺旋式密封装置，其特征在于：所述移动部件包括固定盖，所述回转支撑（2）的固定环以及进料斗（3）均安装在固定盖上，所述旋转筒（9）的外端与固定盖之间留有间隙，所述固定盖上设有注油孔（4），用于为密封部件注润滑油。
PCT/CN2019/098080 2018-08-20 2019-07-29 内外套筒螺旋式密封装置 WO2020038188A1 (zh)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108724465A (zh) * 2018-08-20 2018-11-02 烟台盛利达工程技术有限公司 内外套筒螺旋式密封装置
CN109366736B (zh) * 2018-12-14 2023-08-01 烟台盛利达工程技术有限公司 非固定回转轴的搅拌车回转密封装置
CN109624087B (zh) * 2019-01-29 2023-12-29 烟台盛利达工程技术有限公司 一体式回转密封系统
CN110103339B (zh) * 2019-06-12 2024-02-20 烟台盛利达工程技术有限公司 一种螺旋压紧的离合式回转密封机构

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001034357A1 (en) * 1999-11-12 2001-05-17 Sky Technology Pte Ltd A mixer and mixing method
CN202781441U (zh) * 2012-10-05 2013-03-13 盛富春 混凝土搅拌筒的回转密封机构
CN203293371U (zh) * 2013-05-16 2013-11-20 北汽福田汽车股份有限公司 搅拌筒密封结构和搅拌车
CN103465371A (zh) * 2013-09-13 2013-12-25 三一汽车制造有限公司 一种搅拌车及其回转密封结构
CN204149331U (zh) * 2014-09-25 2015-02-11 中联重科股份有限公司 混凝土搅拌装置及具有其的搅拌车
CN104385462A (zh) * 2014-11-21 2015-03-04 烟台盛利达工程技术有限公司 复合螺旋运输车
CN108724465A (zh) * 2018-08-20 2018-11-02 烟台盛利达工程技术有限公司 内外套筒螺旋式密封装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2842264B1 (fr) * 2002-07-11 2004-09-03 Roulements Soc Nouvelle Montage d'etancheite de roulement, notamment d'axe de reducteur
CN101941244B (zh) * 2010-08-24 2012-01-25 盛富春 搅拌筒进出料口回转密封的混凝土搅拌运输车
CN107344401B (zh) * 2017-08-29 2019-03-29 烟台盛利达工程技术有限公司 中空轴回转密封的混凝土搅拌运输车
CN209257234U (zh) * 2018-08-20 2019-08-16 烟台盛利达工程技术有限公司 内外套筒螺旋式密封装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001034357A1 (en) * 1999-11-12 2001-05-17 Sky Technology Pte Ltd A mixer and mixing method
CN202781441U (zh) * 2012-10-05 2013-03-13 盛富春 混凝土搅拌筒的回转密封机构
CN203293371U (zh) * 2013-05-16 2013-11-20 北汽福田汽车股份有限公司 搅拌筒密封结构和搅拌车
CN103465371A (zh) * 2013-09-13 2013-12-25 三一汽车制造有限公司 一种搅拌车及其回转密封结构
CN204149331U (zh) * 2014-09-25 2015-02-11 中联重科股份有限公司 混凝土搅拌装置及具有其的搅拌车
CN104385462A (zh) * 2014-11-21 2015-03-04 烟台盛利达工程技术有限公司 复合螺旋运输车
CN108724465A (zh) * 2018-08-20 2018-11-02 烟台盛利达工程技术有限公司 内外套筒螺旋式密封装置

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