Dry-mixed mortar stirrer shaft end sealing device
A shaft end sealing and dry-mixing mortar technology, which is applied in the direction of engine sealing, mechanical equipment, engine components, etc., can solve the problem of unreliable single-channel sealing, and achieve the effect of overcoming the unreliable single-channel sealing.
Inactive Publication Date: 2017-05-31
XUZHOU XCMG CONSTR MACHINERY CO LTD BUILDING MACHINERY
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Problems solved by technology
[0003] Purpose: In order to overcome the deficiencies in the prior art, the present invention provides a shaft end sealing device for a dry-mixed mortar mixer, which is composed of two sets of seals, an air seal and a packing seal, and overcomes the existing dry-mixed mortar shaft end seal. Unreliable single channel seal
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[0019] The present invention will be further described below in conjunction with specific examples.
[0020] Such as figure 1 As shown, it is a dry-mixed mortar mixer shaft end sealing device of the present invention, including a sealing ring 1, a shaft sleeve 2, a stirring shaft 3, a sealing ring 4, a sealing plate 5, a cylinder body 6, a wear-resistant sleeve 7, and a fixing plate 8 , air inlet joint 9, packing group 10, screw 11, pressure plate 12, set screw 13; the shaft end sealing device has two seals, which are respectively an air seal and a packing seal from the inside of the cylinder; Outwardly, the shaft sleeve 2 is provided with a wear-resistant sleeve 7, a packing group 10 and a pressure plate 12 in sequence;
[0021] Air seal: the sealing plate 5 is welded on the cylinder body 6, the shaft sleeve 2 is fixed on the stirring shaft 3 through the set screw 13, and the shaft sleeve 2 is sealed by the sealing ring 1 between the end extending into the cylinder body and ...
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The invention discloses a dry-mixed mortar stirrer shaft end sealing device used in a concrete stirring station. The dry-mixed mortar stirrer shaft end sealing device is provided with two seals which are the gas seal and the packing seal from inside to outside of a barrel body correspondingly. An abrasion-resistant sleeve, a packing group and a pressing plate are sequentially arranged outside a shaft sleeve. A sealing plate is welded to the barrel body of a stirrer. The shaft sleeve is fixed to a stirring shaft. An outer groove and an inner groove are formed in the outer diameter and the inner diameter of the abrasion-resistant sleeve correspondingly. Vent holes are uniformly distributed and formed in a circumferential ring of the outer groove, lead to the inner groove and serve as channels of compressed gas. A gas inlet connector communicates with the outer groove of the abrasion-resistant sleeve. The compressed gas enters an outer groove cavity of the abrasion-resistant sleeve through the gas inlet connector and then enters the inner groove through the vent holes. The gas in the inner groove can only be exhausted through an end exhaust outlet of the abrasion-resistant sleeve. The packing group is installed on the outer side of the abrasion-resistant sleeve and pressed through the pressing plate. The dry-mixed mortar stirrer shaft end sealing device is formed by combining the gas seal with the packing seal, and the problem that a single seal is unreliable in existing dry-mixed mortar shaft end sealing is solved.
Description
technical field [0001] The invention relates to a shaft end sealing device of a dry-mixed mortar mixer. Background technique [0002] The shaft end seal of dry-mix mortar mixer is the key technology of dry-mix mortar mixer. At present, the shaft end seal structure of dry-mix mortar mixer is various, including air seal, grease seal, packing seal, etc., but basically they are single-channel seals. It has the problem of unreliable sealing and short-term leakage of dry-mixed mortar mixer. The dry powder mixture in the cylinder of the dry-mixed mortar mixer enters the outside of the cylinder through the gap at the end of the stirring shaft, damaging the sealing parts of the shaft end and causing environmental pollution. Contents of the invention [0003] Purpose: In order to overcome the deficiencies in the prior art, the present invention provides a shaft end sealing device for a dry-mixed mortar mixer, which is composed of two sets of seals, an air seal and a packing seal, a...
Claims
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IPC IPC(8): F16J15/40F16J15/3268
CPCF16J15/40F16J15/3268
Inventor 王静徐道雷王松林琪黄元
Owner XUZHOU XCMG CONSTR MACHINERY CO LTD BUILDING MACHINERY