CN211852922U - Overflow valve for tooth cleaner - Google Patents
Overflow valve for tooth cleaner Download PDFInfo
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- CN211852922U CN211852922U CN202020372147.4U CN202020372147U CN211852922U CN 211852922 U CN211852922 U CN 211852922U CN 202020372147 U CN202020372147 U CN 202020372147U CN 211852922 U CN211852922 U CN 211852922U
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- valve
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- valve sleeve
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Abstract
The utility model relates to an overflow valve for tooth cleaner, including the end casing of intaking, go out the water end casing, the valve barrel, the case, case sealing washer and spring, set up the interior loop platform of valve barrel along circumference in the valve barrel, keep apart for tube-shape cavity and loudspeaker form cavity in with the valve barrel by the interior loop platform of valve barrel, the front end of case sets up ring platform behind case front ring platform and the case, form the annular that is suitable for placing the case sealing washer between ring platform behind case front ring platform and the case, the external diameter of case front ring platform is not less than the internal diameter of the interior loop platform of valve barrel, the external diameter of ring platform is less than the internal diameter of the interior loop platform of valve barrel behind the case, the tail end of case sets up the spring support piece along radial protrusion, the end casing of.
Description
Technical Field
The utility model relates to a dentistry medical treatment auxiliary assembly technical field, especially an overflow valve for scaler.
Background
The ultrasonic dental treatment equipment is used for dental clinical scaling and operation, and its kind has ultrasonic scaler, ultrasonic periodontal therapeutic instrument, ultrasonic bone cutting operation equipment etc. in the scaler, in order to stabilize the water pressure in the water route at scaler water transfer in-process, need a simple and reliable relief valve protection return circuit, prevent that water pressure is too high in the water route from causing the water pump burden, reduce the water pump life-span.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an overflow valve for tooth cleaner of simple structure, the assembly of being convenient for.
In order to solve the technical problem, the overflow valve for the tooth cleaner provided by the utility model comprises a water inlet end shell, a water outlet end shell, a valve sleeve, a valve core sealing ring and a spring, wherein the valve sleeve inner ring platform is arranged in the valve sleeve along the circumferential direction, the valve sleeve is isolated into a cylindrical cavity and a horn-shaped cavity by the valve sleeve inner ring platform, the front end of the valve core is provided with a valve core front ring platform and a valve core rear ring platform, a ring groove suitable for placing the valve core sealing ring is formed between the valve core front ring platform and the valve core rear ring platform, the outer diameter of the valve core front ring platform is not less than the inner diameter of the valve sleeve inner ring platform, the outer diameter of the valve core rear ring platform is less than the inner diameter of the valve sleeve inner ring platform, the tail end of the valve core is provided with a spring supporting block along the radial direction, the water inlet end shell is provided with a water inlet, the water, the rear end of the valve core is arranged in the cylindrical cavity, the spring is sleeved at the rear end of the valve core, the tail end of the spring is abutted with the spring supporting block, the front end of the spring is abutted with the inner ring platform of the valve sleeve, the front ring platform of the valve core is arranged in the horn-shaped cavity, the valve core sealing ring is arranged in the annular groove and is in sealing fit with the inner ring platform of the valve sleeve, so that the cylindrical cavity and the horn-shaped cavity of the valve sleeve are isolated by the valve core sealing ring, when the water pressure reaches a preset value, water in the tooth cleaner enters the valve sleeve through the water inlet, the valve core is pushed to translate to enable the valve core sealing ring to be separated from the inner ring platform of the; after the pressure relief is finished, the valve core and the valve core sealing ring reset under the action of the spring, and the cylindrical cavity and the horn-shaped cavity are isolated again.
Furthermore, the front part of the water inlet end shell is provided with external threads, and the tail part of the water outlet end shell is provided with internal threads matched with the water inlet end shell, so that the water outlet end shell is in threaded connection with the water inlet end shell.
Furthermore, a water outlet end inner ring platform is arranged in the water outlet end shell, a valve sleeve outer ring platform is arranged at the front end of the valve sleeve along the circumferential direction, the inner diameter of the valve sleeve outer ring platform is larger than that of the water outlet end inner ring platform, the outer diameter of the valve sleeve outer ring platform is larger than that of the front end of the water inlet end shell, the front end of the valve sleeve outer ring platform is abutted against the water outlet end inner ring platform during assembly, the outer wall of the valve sleeve is in clearance fit with the inner wall of the water inlet end shell, and the valve sleeve is limited by the water inlet end shell and the water outlet.
Further, the overflow valve for the tooth cleaner further comprises a valve casing sealing ring which is sleeved outside the valve casing outer ring table and used for sealing a gap between the valve casing and the water inlet end casing.
Furthermore, 4 spring support blocks are uniformly distributed at the tail end of the valve core along the circumferential direction, and a water passing groove is formed between every two adjacent spring support blocks.
Furthermore, the edge of the spring supporting block is arranged in an arc shape, so that the edge of the spring supporting block is in sliding fit with the inner wall of the valve sleeve, and the valve core is convenient to move.
The technical effects of the utility model are that: (1) compared with the prior art, the overflow valve for the tooth cleaner has the advantages that the water inlet end valve shell and the water outlet end valve shell are in threaded connection, the structure is simple, and the assembly is easy; (2) the arrangement of the inner ring platform at the water outlet end is convenient for axially limiting the valve sleeve; the arrangement of the outer ring table of the valve sleeve is convenient for limiting the shell at the water inlet end; (3) the arrangement of the inner ring platform of the valve core is matched with the valve core sealing ring to realize sealing; (4) the edge of the spring supporting block is arranged in an arc shape, so that the valve core can slide conveniently while the supporting function is realized; (5) the setting of annular is convenient for assemble and spacing to the case sealing washer.
Drawings
The invention will be described in further detail with reference to the accompanying drawings:
FIG. 1 is a schematic sectional view of an overflow valve for a dental scaler according to the present invention;
FIG. 2 is a schematic view showing an explosion structure of an overflow valve for a dental scaler according to the present invention;
FIG. 3 is a schematic perspective view of the valve cartridge;
fig. 4 is a cross-sectional structural view of the valve sleeve;
in the figure:
the valve core sealing device comprises a water inlet end shell 1, a water inlet 11, external threads 12, a water outlet end shell 2, a water outlet 21, a water outlet end inner ring platform 22, a valve sleeve 3, a valve sleeve inner ring platform 31, a cylindrical cavity 32, a horn-shaped cavity 33, a valve sleeve outer ring platform 34, a valve core 4, a spring supporting block 41, a valve core front ring platform 42, a valve core rear ring platform 43, an annular groove 44, a water passing groove 45, a spring 5, a valve core sealing ring 6 and a valve shell sealing ring 7.
Detailed Description
Example 1
As shown in fig. 1 to 2, the overflow valve for a dental scaler of this embodiment includes a water inlet end housing 1, a water outlet end housing 2, a valve sleeve 3, a valve core 4, a valve core sealing ring 6, a valve housing sealing ring 7, and a spring 5, wherein a water inlet 11 for communicating with the dental scaler is disposed at a tail end of the water inlet end housing 1, an external thread 12 is disposed at a front portion of the water inlet end housing 1, a water outlet 21 for draining is disposed at a front end of the water outlet end housing 2, an internal thread adapted to the external thread 12 of the water inlet end housing is disposed at a tail portion of the water outlet end housing 2, so that the water outlet end housing 2 is in threaded connection with the water inlet end housing 1 (in other embodiments, the water outlet end housing and the water inlet end housing may be in interference fit or snap fit).
As shown in fig. 4, a valve sleeve inner ring table 31 is arranged in the valve sleeve 3 along the circumferential direction, the valve sleeve 3 is isolated into a cylindrical cavity 32 and a horn-shaped cavity 33 by the valve sleeve inner ring table 31, a valve sleeve outer ring table 34 is arranged at the front end of the valve sleeve 3 along the circumferential direction, the inner diameter of the valve sleeve outer ring table 34 is larger than the inner diameter of the water outlet end inner ring table 22, the outer diameter of the valve sleeve outer ring table 34 is larger than the inner diameter of the front end of the water inlet end housing 1, the front end of the valve sleeve outer ring table 34 abuts against the water outlet end inner ring table 22 during assembly, the outer wall of the valve sleeve 3 is in clearance fit with the inner wall of the water inlet end housing 1, the valve sleeve 3 is limited by the water inlet end housing 1 and the water outlet end housing 2, and a valve housing seal ring 7 is sleeved outside.
As shown in fig. 3, a spool front annular table 42 and a spool rear annular table 43 are arranged at the front end of the spool 4, an annular groove 44 suitable for placing the spool seal ring 6 is formed between the spool front annular table 42 and the spool rear annular table 43, the outer diameter of the spool front annular table 42 is not smaller than the inner diameter of the spool inner annular table 31, the outer diameter of the spool rear annular table 43 is smaller than the inner diameter of the spool inner annular table 31, 4 spring support blocks 41 are uniformly distributed at the tail end of the spool 4 along the circumferential direction, each spring support block 41 is arranged in a protruding manner along the radial direction, a water passing groove 45 is arranged between adjacent spring support blocks 41, and the edge of each spring support block 41 is arranged in an arc shape, so that the edge of each spring support block.
During assembly, the water inlet end shell 1 is sleeved with the water outlet end shell 2 and fixedly connected with the water outlet end shell 2 in a threaded manner, the valve sleeve 3 is fixedly arranged in a cavity formed by the water inlet end shell 1 and the water outlet end shell 2, the rear end of the valve core 4 is arranged in the cylindrical cavity 32, the spring 5 is sleeved at the rear end of the valve core 4, the tail end of the spring 5 is abutted with the spring supporting block 41, the front end of the spring 5 is abutted with the inner annular table 31 of the valve sleeve, the front annular table 42 of the valve core is arranged in the horn-shaped cavity 33, the valve core sealing ring 6 is arranged in the annular groove 44 and is in sealing fit with the inner annular table 31 of the valve sleeve, so that the cylindrical cavity 32 and the horn-shaped cavity 33 of the valve sleeve 3 are isolated by the valve core sealing ring 6, when the water in the tooth cleaner enters the valve sleeve 3 through the water inlet 11, when the water pressure reaches a preset value, the, the water in the valve sleeve 3 flows out from the water outlet 21; after pressure relief is finished, the valve core 4 and the valve core sealing ring 6 reset under the action of the spring 5, and the cylindrical cavity 32 and the horn-shaped cavity 33 are isolated again.
It should be understood that the above examples are only for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And that obvious changes and modifications may be made without departing from the spirit of the invention.
Claims (6)
1. An overflow valve for a tooth cleaner is characterized by comprising a water inlet end shell, a water outlet end shell, a valve sleeve, a valve core sealing ring and a spring, wherein a valve core inner annular table is arranged in the valve sleeve along the circumferential direction, the valve sleeve is isolated into a cylindrical cavity and a horn-shaped cavity by the valve core inner annular table, a valve core front annular table and a valve core rear annular table are arranged at the front end of the valve core, an annular groove suitable for placing the valve core sealing ring is formed between the valve core front annular table and the valve core rear annular table, the outer diameter of the valve core front annular table is not smaller than the inner diameter of the valve sleeve inner annular table, the outer diameter of the valve core rear annular table is smaller than the inner diameter of the valve sleeve inner annular table, a spring supporting block is arranged at the tail end of the valve core in a protruding mode along the radial direction, a water inlet is arranged on the water inlet end shell, a water outlet, the rear end of the valve core is arranged in the cylindrical cavity, the spring is sleeved at the rear end of the valve core, the tail end of the spring is abutted to the spring supporting block, the front end of the spring is abutted to the valve sleeve inner ring platform, the valve core front ring platform is arranged in the horn-shaped cavity, the valve core sealing ring is arranged in the annular groove and is in sealing fit with the valve sleeve inner ring platform, and therefore the valve core sealing ring is used for isolating the cylindrical cavity and the horn-shaped cavity of the valve sleeve.
2. The overflow valve for a dental scaler according to claim 1, wherein the front part of the inlet end housing is provided with external threads, and the tail part of the outlet end housing is provided with internal threads matched with the inlet end housing, so that the outlet end housing is in threaded connection with the inlet end housing.
3. The overflow valve for a dental scaler according to claim 1 or 2, wherein a water outlet end inner ring platform is arranged in the water outlet end shell, a valve sleeve outer ring platform is arranged at the front end of the valve sleeve along the circumferential direction, the inner diameter of the valve sleeve outer ring platform is larger than that of the water outlet end inner ring platform, the outer diameter of the valve sleeve outer ring platform is larger than that of the water inlet end shell, the front end of the valve sleeve outer ring platform is abutted against the water outlet end inner ring platform during assembly, and the outer wall of the valve sleeve is in clearance fit with the inner wall of the water inlet end shell.
4. The overflow valve for a dental scaler according to claim 3, further comprising a valve housing sealing ring fitted outside the valve housing outer ring table for sealing a gap between the valve housing and the water inlet side housing.
5. The overflow valve for the dental scaler according to claim 4, wherein 4 spring support blocks are uniformly distributed at the tail end of the valve core along the circumferential direction, and a water passing groove is arranged between the adjacent spring support blocks.
6. The overflow valve for a dental scaler according to claim 5, wherein the edge of said spring support block is curved so that the edge of the spring support block is in sliding engagement with the inner wall of the valve housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020372147.4U CN211852922U (en) | 2020-03-21 | 2020-03-21 | Overflow valve for tooth cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020372147.4U CN211852922U (en) | 2020-03-21 | 2020-03-21 | Overflow valve for tooth cleaner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211852922U true CN211852922U (en) | 2020-11-03 |
Family
ID=73134529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020372147.4U Active CN211852922U (en) | 2020-03-21 | 2020-03-21 | Overflow valve for tooth cleaner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211852922U (en) |
-
2020
- 2020-03-21 CN CN202020372147.4U patent/CN211852922U/en active Active
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