CN219139817U - Sealing structure of mixed explosive truck conveying screw - Google Patents
Sealing structure of mixed explosive truck conveying screw Download PDFInfo
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- CN219139817U CN219139817U CN202223300293.4U CN202223300293U CN219139817U CN 219139817 U CN219139817 U CN 219139817U CN 202223300293 U CN202223300293 U CN 202223300293U CN 219139817 U CN219139817 U CN 219139817U
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Abstract
The utility model discloses a sealing structure of a conveying screw of a mixed explosive truck, and relates to sealing of the conveying screw of the mixed explosive truck on site; the sealing lower box and the sealing upper box of the sealing structure are of groove-shaped structures; the edge of the groove-shaped structure is provided with a connecting lug; the outer wall of the groove body of the sealing upper box is in sliding connection with the inner wall of the groove body of the sealing lower box; a first sealing cavity is formed between the outer wall of the groove body of the sealing upper box and the inner wall of the groove body of the sealing lower box; the sealing top cover is arranged at the top of the sealing upper box and is attached to the connecting lug of the sealing upper box, and a second sealing cavity is formed between the inner wall of the groove body of the sealing upper box and the sealing top cover; the bolt component connects the sealing top cover with the connecting lug of the sealing upper box and the connecting lug of the sealing lower box; sealing elements are arranged in the first sealing cavity and the second sealing cavity; according to the utility model, the long-term non-leakage of the rotating shaft is ensured through three independent sealing layers, so that the replacement period is greatly prolonged, and the working efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of on-site mixed explosive truck conveying screw sealing, in particular to a sealing structure of a mixed explosive truck conveying screw.
Background
The on-site explosive mixing and loading vehicle is a vehicle for carrying out explosive mixing production on site and loading the explosive into a blast hole through a powder delivery pipe; the main components of the vehicle comprise a vehicle chassis, a power output system, a dry material box, a fuel tank, a conveying screw, an electric appliance device and the like. The method is mainly used for filling ammonium nitrate fuel oil explosive into anhydrous blastholes in large and medium-sized strip mine blasting stopes such as metallurgy, coal, chemical industry, building materials and the like.
The sealing mode of the existing on-site mixed explosive truck conveying screw is single-layer packing sealing, and the sealing structure has the defects of short service life, non-adjustable stroke, high assembly requirement and the like.
CN 114100415A is a mixing device of an on-site mixed explosive loading vehicle, and discloses a screw conveying device which comprises a conveying motor and a screw conveyer conveying blade which is obliquely arranged, wherein the conveying motor is arranged on the outer side surface of a conveying bin, a rotating shaft of the conveying motor is fixedly connected with the screw conveyer conveying blade, a cover plate which is obliquely arranged is arranged above the screw conveyer conveying blade, and an opening of the conveying bin is sealed by the cover plate; the technology seals the opening of the feed bin through the cover plate; however, the sealing structure at the interface where the feed screws are connected by flanges does not give a more sealing structure.
Disclosure of Invention
The utility model overcomes the defects of the prior art and provides a sealing structure of a conveying screw of a mixed explosive truck; so as to ensure that the joint of the rotating shafts of the conveying screw does not leak for a long time, and greatly prolong the replacement period.
In order to achieve the above purpose, the present utility model is realized by the following technical scheme.
The sealing structure of the conveying screw of the mixed explosive truck is arranged at the joint of a rotating shaft of the conveying screw; the sealing structure comprises a sealing lower box, a sealing upper box, a sealing top cover and a bolt assembly; the sealing lower box and the sealing upper box are of groove-shaped structures; the edge of the groove-shaped structure is provided with a connecting lug; the outer wall of the groove body of the upper sealing box is in sliding connection with the inner wall of the groove body of the lower sealing box; a first sealing cavity is formed between the outer wall of the groove body of the sealing upper box and the inner wall of the groove body of the sealing lower box; the sealing top cover is arranged at the top of the sealing upper box and is attached to the connecting lug of the sealing upper box, and a second sealing cavity is formed between the inner wall of the groove body of the sealing upper box and the sealing top cover; the bolt component connects the sealing top cover with the connecting lug of the sealing upper box and the connecting lug of the sealing lower box; and sealing elements are arranged in the first sealing cavity and the second sealing cavity.
Further, the sealing element arranged in the first sealing cavity is a packing and an O-shaped ring.
Furthermore, the packing and the O-shaped ring are externally wrapped with a lubricating grease layer.
Further, the sealing element arranged in the second sealing cavity is a framework oil seal.
Furthermore, the lip of the framework oil seal is in interference fit with the rotating shaft.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model is suitable for normal pressure, medium and low speed rotary sealing, two sealing cavities are formed by sealing the lower box, the upper box and the sealing top cover, the first sealing cavity is provided with an O-shaped ring and a packing in sequence, the second sealing cavity is provided with a framework oil seal, 3 independent sealing layers are formed by 3 different materials, and the materials are ensured not to leak to the outside.
The middle gap between the sealing lower box and the sealing upper box can be reduced by fastening the bolt component, so that the packing and the O-shaped ring are forced to elastically deform to be in close contact with the rotating shaft, and the sealing effect is achieved; the framework oil seal lip is in interference fit with the rotating shaft, so that the sealing effect is achieved.
The utility model has the advantages of simple structure, small volume, easy processing of parts, low cost and high reliability, and 3 independent sealing layers ensure that the rotating shaft is not leaked for a long time, greatly prolongs the replacement period and improves the working efficiency.
Drawings
FIG. 1 is a cross-sectional view of a seal structure of a conveying screw of a hybrid explosive truck according to the present utility model.
In the figure, a 1-sealing lower box, a 2-sealing upper box, a 3-sealing top cover, a 4-bolt assembly, a 5-framework oil seal, a 6-packing, a 7-O-shaped ring, an 8-rotating shaft and a 9-flange are arranged.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail by combining the embodiments and the drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. The following describes the technical scheme of the present utility model in detail with reference to examples and drawings, but the scope of protection is not limited thereto.
As shown in fig. 1, the present embodiment provides a sealing structure of a conveying screw of a hybrid explosive truck, the sealing structure is arranged at a joint of a rotating shaft 8 of the conveying screw; the joints of the rotating shafts 8 are connected by flanges 9.
The sealing structure comprises a sealing lower box 1, a sealing upper box 2, a sealing top cover 3 and a bolt assembly 4; the sealing lower box 1 and the sealing upper box 2 are of groove-shaped structures; the edge of the groove-shaped structure is provided with a connecting lug; the outer wall of the groove body of the upper sealing box 2 is in sliding connection with the inner wall of the groove body of the lower sealing box 1; a first sealing cavity is formed between the outer wall of the groove body of the sealing upper box 2 and the inner wall of the groove body of the sealing lower box 1; the sealing top cover 3 is arranged at the top of the sealing upper box 2 and is attached to the connecting lug of the sealing upper box 2, and a second sealing cavity is formed between the inner wall of the groove body of the sealing upper box 2 and the sealing top cover 3; the bolt component 4 connects the sealing top cover 3 with the connecting lug of the sealing upper box 2 and the connecting lug of the sealing lower box 1; and sealing elements are arranged in the first sealing cavity and the second sealing cavity.
The sealing elements arranged in the first sealing cavity are packing 6 and O-shaped ring 7. The O-shaped ring 7 and the packing 6 are sequentially installed in a first sealing cavity formed by the 1 sealing lower box and the 2 sealing upper box, and a lubricating grease layer is wrapped outside the packing 6 and the O-shaped ring 7 during installation, so that the wear resistance and the heat dissipation effect of the composite rotary sealing device are improved. And a sealing piece arranged in the second sealing cavity is a framework oil seal 5. The lip of the framework oil seal 5 is in interference fit with the rotating shaft 8, so that the sealing effect is achieved.
The gap of the first sealing cavity between the sealing lower box 1 and the sealing upper box 2 is reduced by fastening the bolt component 4, so that the packing 6 and the O-shaped ring 7 are forced to elastically deform to a certain extent and are tightly contacted with the rotating shaft 8, and the sealing effect is achieved; the lip of the framework oil seal 5 is in interference fit with the rotating shaft 8, so that the sealing effect is achieved. This seal structure is applicable to normal pressure, well low-speed rotary seal, forms two sealed cavitys through sealed lower box 1, sealed box 2, sealed top cap 3, and O shape circle and packing are installed in proper order to first sealed cavity, and the skeleton oil blanket is installed to the second sealed cavity, and 3 kinds of different materials form 3 independent sealing layers, and 3 independent sealing layers ensure that rotation axis department does not leak for a long time, prolongs the change cycle greatly, improves work efficiency.
While the utility model has been described in detail in connection with specific preferred embodiments thereof, it is not to be construed as limited thereto, but rather as a result of a simple deduction or substitution by a person having ordinary skill in the art to which the utility model pertains without departing from the scope of the utility model defined by the appended claims.
Claims (5)
1. A sealing structure of a conveying screw of a mixed explosive truck, wherein the sealing structure is arranged at the joint of a rotating shaft (8) of the conveying screw; the sealing structure is characterized by comprising a sealing lower box (1), a sealing upper box (2), a sealing top cover (3) and a bolt assembly (4); the sealing lower box (1) and the sealing upper box (2) are of groove-shaped structures; the edge of the groove-shaped structure is provided with a connecting lug; the outer wall of the groove body of the upper sealing box (2) is in sliding connection with the inner wall of the groove body of the lower sealing box (1); a first sealing cavity is formed between the outer wall of the groove body of the sealing upper box (2) and the inner wall of the groove body of the sealing lower box (1); the sealing top cover (3) is arranged at the top of the sealing upper box (2) and is attached to the connecting lug of the sealing upper box (2), and a second sealing cavity is formed between the inner wall of the groove body of the sealing upper box (2) and the sealing top cover (3); the bolt component (4) connects the sealing top cover (3) with the connecting lug of the sealing upper box (2) and the connecting lug of the sealing lower box (1); and sealing elements are arranged in the first sealing cavity and the second sealing cavity.
2. The sealing structure of the conveying screw of the mixed explosive truck according to claim 1, wherein the sealing elements arranged in the first sealing cavity are packing (6) and O-shaped rings (7).
3. The sealing structure of the conveying screw of the mixed explosive truck according to claim 2, wherein the packing (6) and the O-shaped ring (7) are externally wrapped with a lubricating grease layer.
4. The sealing structure of the conveying screw of the mixed explosive truck according to claim 2, wherein the sealing element arranged in the second sealing cavity is a framework oil seal (5).
5. The sealing structure of the conveying screw of the hybrid explosive truck according to claim 4, wherein the lip of the framework oil seal (5) is in interference fit with the rotating shaft (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223300293.4U CN219139817U (en) | 2022-12-09 | 2022-12-09 | Sealing structure of mixed explosive truck conveying screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223300293.4U CN219139817U (en) | 2022-12-09 | 2022-12-09 | Sealing structure of mixed explosive truck conveying screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219139817U true CN219139817U (en) | 2023-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223300293.4U Active CN219139817U (en) | 2022-12-09 | 2022-12-09 | Sealing structure of mixed explosive truck conveying screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219139817U (en) |
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2022
- 2022-12-09 CN CN202223300293.4U patent/CN219139817U/en active Active
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