CN215831144U - Adjustable shaft seal of refrigeration compressor - Google Patents
Adjustable shaft seal of refrigeration compressor Download PDFInfo
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- CN215831144U CN215831144U CN202120701763.4U CN202120701763U CN215831144U CN 215831144 U CN215831144 U CN 215831144U CN 202120701763 U CN202120701763 U CN 202120701763U CN 215831144 U CN215831144 U CN 215831144U
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- shaft seal
- tower
- shaped spring
- spring
- outer sleeve
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Abstract
The utility model discloses an adjustable shaft seal of a refrigeration compressor, wherein a shaft seal body consists of a shaft seal outer sleeve and a tower-shaped spring sleeved in an inner groove of the shaft seal outer sleeve, an axial adjusting gasket is connected at the large end of the tower-shaped spring to form a whole part, the end surface of one side of the shaft seal outer sleeve, in which a shaft hole is arranged, is provided with the inner groove with the width gradually reduced from outside to inside, the small end of the tower-shaped spring, which is formed by sleeving the two springs inside and outside, is arranged in the inner groove, a positioning step of the axial adjusting gasket is connected with an embedded connecting groove, and one side of the positioning step is provided with a non-return step axial locking position.
Description
Technical Field
The utility model relates to the technical field of refrigeration and air conditioning, in particular to an adjustable shaft seal of a refrigeration compressor.
Background
The work axle of refrigeration plant's compressor adopts shaft coupling rigid connection or flexonics with the drive shaft of motor, the shaft seal is established with the hole hub connection department of casing to the work axle of compressor, avoid the refrigerant to permeate out, the shaft seal that sets up is the conventional type generally, sealed function relies on the rubber materials of shaft seal to realize from the flexibility in area, but because of the difference in temperature of operational environment and during operation, the hole hub connection of work axle and casing can expend with heat and contract with cold and produce the fit clearance and change, the rubber materials of this change shaft seal of fit clearance carries out limited buffering and compensaties from the flexibility in area, only can carry out slight buffering, after a period, the inside refrigerant of compressor will follow the contact circumference of the work axle of shaft seal and compressor and go out slow seepage.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides an adjustable shaft seal of a refrigeration compressor, wherein a shaft seal body consists of a shaft seal outer sleeve and a tower-shaped spring sleeved in an inner groove of the shaft seal outer sleeve, an axial adjusting gasket is connected at the large end of the tower-shaped spring to form a whole part, an inner groove with the width gradually reduced from outside to inside is arranged on one side end surface of the shaft seal outer sleeve in which a shaft hole is arranged, the small end of the tower-shaped spring formed by sleeving two springs inside and outside is arranged in the inner groove, a positioning step of the axial adjusting gasket is connected with a connecting groove in an embedded manner, and a backstop step is arranged on one side of the positioning step to axially lock the position. The axial adjusting washer elastically contacted with the end surface of the end cover keeps axial thrust, so that the tower-shaped spring keeps a radial elastic force state and self-adjusting sealing is maintained.
In order to achieve the purpose, the technical scheme of the utility model is as follows: an adjustable shaft seal of a refrigeration compressor comprises a shaft seal body, wherein the shaft seal body is composed of a shaft seal outer sleeve and a tower-shaped spring sleeved in an inner groove of the shaft seal outer sleeve, and an axial adjusting gasket is connected at the large end of the tower-shaped spring to form a whole component;
the middle of the shaft seal outer sleeve is provided with a through shaft hole, one side end face of the shaft seal outer sleeve is provided with an inner groove, and the width of the inner groove is reduced from outside to inside in sequence;
the tower-shaped spring is formed by sleeving two springs inside and outside, a connecting groove is formed in the middle of the tower-shaped spring formed by sleeving the inner spring and the outer spring, a taper hole is formed in the tower-shaped spring, and the small end of the conical tower-shaped spring is inwards installed in the inner groove;
the axial adjusting washer is characterized in that a setting step of the axial adjusting washer is connected with the tower-shaped spring in an embedded mode through a connecting groove, a stopping step is arranged on one side of the setting step, a through hole is formed in the stopping step, a counter bore is formed in the setting step, and the counter bore penetrates through the through hole.
The inner diameter and the outer diameter of the positioning step are matched with those of the connecting groove, and the diameter of the retaining step is smaller than that of the inner groove.
And further arranging one of the two springs forming the tower-shaped spring as an outer tower-shaped spring and the other spring as an inner tower-shaped spring.
The utility model has the beneficial effects that: the utility model can seal the gap between the shaft and the hole by means of the radial elastic expansion force of the tower-shaped spring, and the axial adjusting washer elastically contacted with the end surface of the end cover keeps the axial thrust, so that the tower-shaped spring keeps the radial elastic state and maintains the self-adjusting sealing.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a right side view of FIG. 1;
FIG. 3 is a right side view of the shaft seal housing of FIG. 1;
FIG. 4 is a schematic view of the axial adjustment washer of FIG. 1;
fig. 5 is an exploded view of fig. 1.
In the figure: the shaft seal structure comprises a shaft seal body 1, a shaft seal outer sleeve 2, an inner groove 201, a shaft hole 202, a tower-shaped spring 3, a connecting groove 301, a taper hole 302, an axial adjusting gasket 4, a positioning step 401, a retaining step 402, a through hole 403 and a counter bore 404.
Detailed Description
The technical scheme of the utility model is further specifically described by the following embodiments and the accompanying drawings.
As shown in fig. 1-2, an adjustable shaft seal of a refrigeration compressor, a shaft seal body 1 is composed of a shaft seal jacket 2 made of oil-resistant rubber material and a tower-shaped spring 3 sleeved in an inner groove 201 of the shaft seal jacket 2, an axial adjusting gasket 4 is connected at the big end of the tower-shaped spring 3 to form a whole part, the axial adjusting gasket 4 always keeps elastic thrust on the tower-shaped spring 3 towards the bottom of the inner groove 201 in the axial direction, so that the conical tower-shaped spring 3 keeps the outward circumferential adjustment function in the synchronous radial direction under the action of the inward thrust.
As shown in fig. 3 and 5, a through shaft hole 202 is arranged in the middle of the shaft seal outer sleeve 2, an inner groove 201 is arranged on one side end surface of the shaft seal outer sleeve 2, the width of the inner groove 201 is sequentially reduced from outside to inside, when the conical tower-shaped spring 3 is installed inside, the tower-shaped spring 3 is formed by sleeving two springs inside and outside, a connecting groove 301 is formed in the middle of the tower-shaped spring 3 formed by sleeving the inner spring and the outer spring, a conical hole 302 is formed in the tower-shaped spring 3, one of the two springs is an outer tower-shaped spring, the other spring is an inner tower-shaped spring, the small end of the conical tower-shaped spring 3 is inserted into the inner groove 201 towards the inside, when the large-diameter end of the tower-shaped spring 3 generates inward elastic thrust, the large-diameter end of the tower-shaped spring 3 moves inwards towards the conical inner groove 201, the large-diameter end of the tower-shaped spring 3 synchronously pushes the shaft seal of the outer sleeve 2 outwards and self-adjusts the shaft seal, and also pushes the shaft seal of the outer shaft seal 2 sleeved with the working shaft circumferential wall inwards, the contact surface between the shaft hole 202 and the working shaft is always kept in a good state, and the leakage of the cooling liquid is avoided.
As shown in fig. 4, a setting step 401 of the axial adjusting washer 4 is in embedded connection with a connecting groove 301 of the tower-shaped spring 3, a retaining step 402 is arranged on one side of the positioning step 401, a through hole 403 is arranged in the retaining step 402, a counter bore 404 is arranged in the positioning step 401, and the counter bore 404 penetrates through the through hole 403.
The inner diameter and the outer diameter of the positioning step 401 are matched with the inner diameter and the outer diameter of the connecting groove 301, and the diameter of the retaining step 402 is smaller than that of the inner groove 201.
In application, the utility model can seal the gap between the shaft and the hole by means of the radial elastic expansion force of the tower-shaped spring, and the axial adjusting gasket which is elastically contacted with the end surface of the end cover keeps the axial thrust, so that the tower-shaped spring keeps the state of radial elasticity and maintains self-adjusting sealing.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the claims of the present invention.
Claims (3)
1. An adjustable shaft seal of a refrigeration compressor is characterized in that: the shaft seal structure comprises a shaft seal body (1), wherein the shaft seal body (1) is composed of a shaft seal outer sleeve (2) and a tower-shaped spring (3) sleeved in an inner groove (201) of the shaft seal outer sleeve (2), and an axial adjusting gasket (4) is connected at the large end of the tower-shaped spring (3) to form a whole part;
the middle of the shaft seal outer sleeve (2) is provided with a through shaft hole (202), one side end face of the shaft seal outer sleeve (2) is provided with an inner groove (201), and the width of the inner groove (201) is sequentially reduced from outside to inside;
the tower-shaped spring (3) is formed by sleeving two springs inside and outside, a connecting groove (301) is formed in the middle of the tower-shaped spring (3) formed by sleeving the inner spring and the outer spring, a conical hole (302) is formed in the tower-shaped spring (3), and the small end of the conical tower-shaped spring (3) is arranged in the inner groove (201) towards the inside;
axial adjusting washer (4) set for a step (401) and turriform spring (3) contain connecting groove (301) embedded connection, and backstop step (402) are established to one side of location step (401), establish through-hole (403) in backstop step (402), establish counter bore (404) in location step (401), counter bore (404) run through with through-hole (403).
2. The adjustable shaft seal of a refrigeration compressor of claim 1, wherein: the inner diameter and the outer diameter of the positioning step (401) are matched with the inner diameter and the outer diameter of the connecting groove (301), and the diameter of the retaining step (402) is smaller than that of the inner groove (201).
3. The adjustable shaft seal of a refrigeration compressor of claim 1, wherein: one of the two springs forming the tower-shaped spring (3) is an outer tower-shaped spring, and the other spring is an inner tower-shaped spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120701763.4U CN215831144U (en) | 2021-04-07 | 2021-04-07 | Adjustable shaft seal of refrigeration compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120701763.4U CN215831144U (en) | 2021-04-07 | 2021-04-07 | Adjustable shaft seal of refrigeration compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215831144U true CN215831144U (en) | 2022-02-15 |
Family
ID=80187886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120701763.4U Active CN215831144U (en) | 2021-04-07 | 2021-04-07 | Adjustable shaft seal of refrigeration compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215831144U (en) |
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2021
- 2021-04-07 CN CN202120701763.4U patent/CN215831144U/en active Active
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