CN215058428U - Air compressor impeller mounting structure - Google Patents

Air compressor impeller mounting structure Download PDF

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Publication number
CN215058428U
CN215058428U CN202120943070.6U CN202120943070U CN215058428U CN 215058428 U CN215058428 U CN 215058428U CN 202120943070 U CN202120943070 U CN 202120943070U CN 215058428 U CN215058428 U CN 215058428U
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China
Prior art keywords
hole
impeller
locking bolt
shaft
air compressor
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Application number
CN202120943070.6U
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Chinese (zh)
Inventor
蹇一兵
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Elliott Tianjin Mechanical Equipment Co ltd
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Elliott Tianjin Mechanical Equipment Co ltd
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Priority to CN202120943070.6U priority Critical patent/CN215058428U/en
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Abstract

The utility model discloses an air compressor impeller mounting structure belongs to air compressor technical field, including impeller, gear shaft and locking bolt, the impeller has central through-hole, its characterized in that: the shaft end of the gear shaft is provided with a sleeve hole, the inner circumferential wall of the sleeve hole is provided with an inner threaded part, the bottom of the sleeve hole is provided with a threaded hole, the center of the back of the impeller is provided with an end shaft, the outer circumferential wall of the end shaft is provided with an outer threaded part, the end shaft is installed in the sleeve hole through the outer threaded part and the inner threaded part which are matched, the locking bolt penetrates through the center through hole of the impeller and is combined with the threaded hole of the gear shaft, and the bolt head of the locking bolt presses against the end part of the impeller. In the impeller mounting structure, the impeller is easier to disassemble and assemble, the efficiency is high, the impeller is more stable and reliable to mount, and the failure rate of the compressor can be reduced.

Description

Air compressor impeller mounting structure
Technical Field
The utility model belongs to the technical field of air compressor, especially, relate to an air compressor impeller mounting structure.
Background
The principle of the centrifugal air compressor is that the impeller drives the gas to rotate at high speed, so that the gas generates centrifugal force, and the diffusion flow of the gas in the impeller improves the flow speed and pressure of the gas after passing through the impeller, thereby continuously producing compressed air.
The impeller is the core component of the centrifugal air compressor, which is mounted on a gear shaft. At present, the impeller is mounted on the gear shaft by means of interference fit. The interference fit mounting is generally assembled and disassembled by heating. The installation is dismantled and is wasted time and energy, and is inefficient. On the other hand, the long running time of the compressor and the improper operation in the assembling process can cause the abrasion of the assembling contact surface, the assembling reliability is poor, and the equipment is easy to break down.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides a solve impeller dismouting difficulty, it is inefficient, the air compressor impeller mounting structure of the problem of assembly trouble appears in the impeller easily.
The utility model discloses a realize like this, an air compressor impeller mounting structure, including impeller, gear shaft and locking bolt, the impeller has central through-hole, its characterized in that: the shaft end of the gear shaft is provided with a sleeve hole, the inner circumferential wall of the sleeve hole is provided with an inner threaded part, the bottom of the sleeve hole is provided with a threaded hole, the center of the back of the impeller is provided with an end shaft, the outer circumferential wall of the end shaft is provided with an outer threaded part, the end shaft is installed in the sleeve hole through the outer threaded part and the inner threaded part which are matched, the locking bolt penetrates through the center through hole of the impeller and is combined with the threaded hole of the gear shaft, and the bolt head of the locking bolt presses against the end part of the impeller.
In the above-described aspect, preferably, the female screw portion and the screw hole have the same screw thread direction, and the male screw portion and the locking bolt have the same screw thread direction.
In the above technical solution, preferably, a regular hexagonal hole is provided at a central position of the end shaft, and the regular hexagonal hole is connected to a central through hole of the impeller; the trepanning is a stepped hole which sequentially comprises a connecting hole and an inserting hole from outside to inside, the internal thread part is arranged on the inner wall of the connecting hole, and the threaded hole is arranged at the bottom of the inserting hole; the screw rod of the locking bolt is provided with a hexagonal nut part which can transfer torsion with the hexagonal hole, and the diameter of the insertion hole is larger than the outer diameter of the hexagonal nut part.
The utility model has the advantages and effects that:
in this scheme, the back of impeller is equipped with and passes through threaded connection end shaft with the axle head of gear shaft, and the impeller is except passing through threaded connection with the gear shaft, and the impeller still passes through the bolt top tightly fixedly. Compare the mounting means of traditional impeller hot packing interference, the dismantlement of this structure is efficient, and the operation degree of difficulty is little, and impeller installation is reliable, can effectively reduce the fault rate of compressor.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an impeller according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a second embodiment of the present invention;
fig. 4 is a side view of a locking bolt according to a second embodiment of the present invention.
In the figure, 1, impeller; 1-1, an end shaft; 1-2, a regular hexagonal hole; 2. a gear shaft; 2-1, trepanning; 3. locking the bolt; 3-1, bolt head; 3-2 and a hexagonal nut part.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
For solving impeller dismouting difficulty, inefficiency, the problem of assembly trouble appears in the impeller easily, the utility model particularly provides an air compressor impeller mounting structure, among this impeller mounting structure, the dismouting of impeller is easier, and efficient, and the installation of impeller is more reliable and more stable, can reduce the fault rate of compressor. For further explanation of the structure of the present invention, the following detailed description is made with reference to the accompanying drawings:
example one
Referring to fig. 1 and 2, an impeller mounting structure of an air compressor includes an impeller 1, a gear shaft 2 and a locking bolt 3, wherein the impeller 1 has a central through hole.
The shaft end of the gear shaft 2 is provided with a sleeve hole 2-1, and the sleeve hole 2-1 is a shaft center hole processed on the end face of the impeller mounting end of the gear shaft 2. The inner circumferential wall of the trepanning 2-1 is provided with an internal thread part. The bottom of the trepanning 2-1 is provided with a threaded hole, and the diameter of the threaded hole is smaller than that of the trepanning 2-1.
The central position of the back of the impeller 1 is provided with an end shaft 1-1, and the end shaft 1-1 is a cylinder protruding from the central position of the impeller 1 and is integrally processed with the impeller. The outer circumferential wall of the end shaft 1-1 is provided with an external thread part, and the external thread part is matched with the internal thread part of the trepan boring 2-1 in size to ensure that the two can be engaged and assembled. The end shaft 1-1 is arranged in the sleeve hole 2-1 through an external thread part and an internal thread part which are matched. The end shaft 1-1 is screwed into the sleeve hole 2-1, and the back of the impeller 1 is attached to the end face of the gear shaft 2. The threaded connection mode between the impeller 1 and the gear shaft 2 is realized through the structure.
After the impeller 1 is assembled on the gear shaft 2, the locking bolt 3 penetrates through the central through hole of the impeller 1 and is combined with the threaded hole of the gear shaft 2, the locking bolt 3 is screwed, and the bolt head 3-1 of the locking bolt 3 is pressed against the end part of the impeller 1. The front end of the impeller 1 is provided with a counter bore, and a bolt head 3-1 of a locking bolt 3 is locked in the counter bore.
The female screw portion has the same thread direction as the screw hole, and the male screw portion has the same thread direction as the lock bolt 3. In the process of tightening the lock bolt 3, the locking force between the impeller 1 and the gear shaft 2 also becomes large.
Example two
Referring to fig. 3 and 4, the technical solution described in this embodiment is an improvement on the first embodiment, and specifically, the following technical features are added, a regular hexagonal hole 1-2 is disposed at a central position of an end shaft 1-1, and the regular hexagonal hole 1-2 is inscribed in a central through hole of an impeller, in this embodiment, an axial length of the regular hexagonal hole 1-2 is the same as an axial length of the end shaft 1-1.
The sleeve hole 2-1 is a stepped hole which sequentially comprises a connecting hole and an inserting hole from outside to inside, the diameter of the connecting hole is larger than that of the inserting hole, and the connecting hole is used for assembling the end shaft 1-1. The inner wall of the connecting hole is arranged at the inner thread part, and the bottom of the jack is arranged at the threaded hole.
The screw rod of the locking bolt 3 is provided with a hexagonal nut part 3-2 which can transfer torsion with the regular hexagonal hole 1-2, and the diameter of the insertion hole is larger than the outer diameter of the hexagonal nut part 3-2. When the hexagonal nut portion 3-2 is located in the regular hexagonal hole 1-2, the hexagonal nut portion 3-2 rotates, and torque can be transmitted between the hexagonal nut portion 3-2 and the end shaft 1-1.
After the impeller 1 is assembled on the gear shaft 2 through threads, the locking bolt 3 is inserted into a center hole of the impeller 1, after the hexagonal nut portion 3-2 of the locking bolt 3 completely passes through the regular hexagonal hole 1-2, the front end thread portion of the locking bolt 3 starts to be combined with the threaded hole, and the locking of the locking bolt 3 is realized by rotating the locking bolt 3.
In the dismounting process, the locking bolt 3 is rotated reversely, after the locking bolt 3 is completely separated from the threaded hole, the hexagonal nut part 3-2 starts to enter the regular hexagonal hole 1-2, the hexagonal nut part 3-2 enters the regular hexagonal hole 1-2, the locking bolt 3 is rotated again, and torque is transmitted between the locking bolt 3 and the impeller 1, so that the impeller 1 is dismounted, the impeller can be dismounted only by screwing the locking bolt 3, and the efficiency is high.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (3)

1. The utility model provides an air compressor impeller mounting structure, includes impeller (1), gear shaft (2) and locking bolt (3), impeller (1) has central through-hole, its characterized in that: the end of the gear shaft (2) is provided with a sleeve hole (2-1), the inner circumferential wall of the sleeve hole (2-1) is provided with an inner threaded part, the bottom of the sleeve hole (2-1) is provided with a threaded hole, the center of the back of the impeller (1) is provided with an end shaft (1-1), the outer circumferential wall of the end shaft (1-1) is provided with an outer threaded part, the end shaft (1-1) is installed in the sleeve hole (2-1) through the outer threaded part and the inner threaded part which are matched with each other, the locking bolt (3) penetrates through the center through hole of the impeller (1) and is combined with the threaded hole of the gear shaft (2), and the bolt head (3-1) of the locking bolt (3) presses the end part of the impeller (1).
2. The air compressor impeller mounting structure of claim 1, wherein: the internal thread portion is the same with the screw thread screw direction of screw hole, external thread portion is the same with the screw thread screw direction of locking bolt.
3. The air compressor impeller mounting structure of claim 1, wherein: a regular hexagonal hole (1-2) is formed in the center of the end shaft (1-1), and the regular hexagonal hole (1-2) is connected with a central through hole of the impeller (1) in an inscribed mode; the trepanning (2-1) is a stepped hole which sequentially comprises a connecting hole and an inserting hole from outside to inside, the internal thread part is arranged on the inner wall of the connecting hole, and the threaded hole is arranged at the bottom of the inserting hole; the screw rod of the locking bolt (3) is provided with a hexagonal nut part (3-2) capable of transferring torsion with the hexagonal hole (1-2), and the diameter of the insertion hole is larger than the outer diameter of the hexagonal nut part (3-2).
CN202120943070.6U 2021-04-30 2021-04-30 Air compressor impeller mounting structure Active CN215058428U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120943070.6U CN215058428U (en) 2021-04-30 2021-04-30 Air compressor impeller mounting structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120943070.6U CN215058428U (en) 2021-04-30 2021-04-30 Air compressor impeller mounting structure

Publications (1)

Publication Number Publication Date
CN215058428U true CN215058428U (en) 2021-12-07

Family

ID=79108717

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120943070.6U Active CN215058428U (en) 2021-04-30 2021-04-30 Air compressor impeller mounting structure

Country Status (1)

Country Link
CN (1) CN215058428U (en)

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