CN207080656U - Flow switch - Google Patents
Flow switch Download PDFInfo
- Publication number
- CN207080656U CN207080656U CN201720660361.8U CN201720660361U CN207080656U CN 207080656 U CN207080656 U CN 207080656U CN 201720660361 U CN201720660361 U CN 201720660361U CN 207080656 U CN207080656 U CN 207080656U
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- China
- Prior art keywords
- guide channel
- check
- valves
- flow switch
- lead
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- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model is related to a kind of flow switch, the sand, iron filings when solving the problems, such as to use in fluid media (medium) be easily stuck in guide channel and stuck check-valves and cause check-valves be up and down or even to cause water pump failure.Its scheme：The guide channel is polygon prism shape, is coordinated between the inwall of the guide channel and the lead for linear contact lay, the space between the inwall of the guide channel and the lead is sediment outflow passage.Its effect：More bigger spaces can be formed between the inwall of guide channel and the lead, are sediment outflow passage, reduction sand, iron filings are stuck in the possibility between the inwall of guide channel and lead, reduce and even avoid stuck situation from occurring.
Description
Technical field
It the utility model is related to a kind of flow switch, more particularly to a kind of flow switch.
Background technology
The existing flow switch applied to automatic pressure pump, as depicted in figs. 1 and 2, including non-return valve seat and check-valves, only
The lead returned on valve seat is cylinder, and the guide channel on check-valves is cylinder（Such as Fig. 3）, lead inserts with guide channel
Cooperation is connect, gap between the two is small.When in use, the sand in fluid media (medium), iron filings are easily stuck in guide channel, and are blocked
Dead check-valves, cause check-valves up and down, so as to cause water pump failure.
The content of the invention
The purpose of this utility model is solve above mentioned problem existing for prior art and provide a kind of flow switch, passes through
Flow switch check valve structure is improved, avoids check-valves stuck with non-return valve seat so that what flow switch can be for a long time normally makes
With, and improve the work sensitivity of flow switch.
What above-mentioned technical purpose of the present utility model mainly solved by the following technical programs：Flow switch, including only
The check-valves of valve seat and non-return valve seat cooperation, the return spring between non-return valve seat and check-valves are returned, on the non-return valve seat
Lead insert in the guide channel in the check-valves, the upper end open of the guide channel is longitudinally disposed, its centre bit
In on the axis of the lead, the lower ending opening of the guide channel is located in the side wall of the check-valves, is transverse opening,
It is characterized in that the guide channel is polygon prism shape, it is linear contact lay between the inwall of the guide channel and the lead
Coordinate, the space between the inwall of the guide channel and the lead is sediment outflow passage.
It is directed to passage and is changed to polygon prism shape（Such as triangular prism, quadrangular, pentagonal prism, six prisms）, lead（Feel
Answer cylinder）Be changed to line cooperation with the face of prior art with guide channel, the inwall of guide channel and the lead it
Between can form more bigger spaces, be sediment outflow passage, reduction sand, iron filings be stuck in guide channel inwall and lead it
Between possibility, reduce even avoid stuck situation from occurring.
As further improving and supplementing to above-mentioned technical proposal, the utility model uses following technical measures：Also wrap
Magnet circle is included, the magnet circle is arranged in the wall body of check-valves upper end.In the prior art, the inwall of check-valves upper end opens up recessed
Circle, magnet circle are arranged in recessed circle, and magnet circle needs strict concentricity requirement with guide channel, it is therefore desirable to has higher
Required precision is produced and processed, also to there is assembly precision requirement.
For the technical program, the inwall at least making check-valves upper end is the inwall of coherent structure, is avoided by magnetic
Iron ring produces the destruction of structure continuity, also reduces the requirement of magnet circle and check-valves upper end concentricity, advantageously reduces and adds
Work precision, production and processing cost is advantageously reduced, be also beneficial to magnet circle easy to setup, convenient production and processing and assembling.Due to
The inwall of guide channel does not have exposed magnet circle, and the possibility of the inwall absorption iron filings of guide channel reduces, further reduces and be oriented to
The appearance of stuck situation is formed between the inwall and lead of passage.
Coordinate in order that the magnetic force of magnet circle can be formed smoothly with the tongue tube in non-return valve seat, on the check-valves
The outer wall at end opens up some sulculuses, and the sulculus extends to the magnet circle, makes to correspond to the small groove portion on the magnet circle
Position is exposed.
The check-valves bottom is described to be inverted some guiding of vertically-arranged setting in taper type structure to be inverted taper type structure
Muscle, the guiding rib are distributed in emission center shape and form swirling.Check-valves bottom uses the guiding rib of swirling distribution
（It is referred to as angularly disposed guiding rib）, when current pass through check-valves, flow action has a shearing on guiding rib
Power, check-valves is set to produce rotary motion（Similar waterwheel）, discharged so as to which sand grains is rotated at polygon corner, avoid check-valves
It is stuck.
In order to facilitate production and processing, every guiding rib is vertical bar shaped.Certainly, guiding rib is shaped form muscle, Ye Shike
Capable.
Evagination has seal ring seat on the check-valves, and the seal ring seat is set with unification seal washer, the seal washer
Put and set sealing to coordinate between the side away from the non-return valve seat, the seal ring seat and the inversion taper type structure
Portion, the sealing fit portion is cylindrical, and the thickness of the sealing fit portion is more than the thickness of the inversion taper type structure.
The thickness D of sealing fit portion, more in the prior art the thickness of corresponding position have more increase so that check-valves
Increase with the cooperation area of the sealing ring on the pump housing, further reduce the possibility of current leakage.
The surface of the sealing fit portion sets some grooves, and the groove is longitudinally disposed, and staggers with the guiding rib
Set.The groove set up, add the area that check-valves is located at pump housing inner chamber.When the pump housing works, the water of pump housing entrance is with stopping
Return the contact area increase of valve.That is, in the case of the hydro-flow thrust identical that flow switch trigger action needs, it is required
Current it is smaller.Flow switch detection critical flow is 0.25-0.3 m3/h in the prior art, the flow that the technical program is related to
It is 0.15-0.2 m3/h that switch, which can detect critical flow, has greatly improved the sensitivity of flow switch.
In order to increase sealing fit portion and the sealing effectiveness of the sealing ring on the pump housing, groove longitudinal direction depth is less than described
The thickness of sealing fit portion, the openend of the groove are located at the lower end of the sealing fit portion.
The utility model has the advantage that：
1st, be directed to passage and be changed to polygon prism shape, between lead and guide channel for line coordinate, guide channel it is interior
More bigger spaces can be formed between wall and the lead, are sediment outflow passage, reduce sand, iron filings are stuck in guide channel
Inwall and lead between possibility, reduce even avoid stuck situation from occurring.
2nd, check-valves bottom uses the guiding rib of swirling distribution, and when current pass through check-valves, flow action is in guiding rib
On, a shearing force is had, check-valves is produced rotary motion（Similar waterwheel）, so as to which sand grains is rotated at polygon corner
Discharge, avoids check-valves stuck.
3rd, the groove set up, the area that check-valves is located at pump housing inner chamber is added.When the pump housing works, the water of pump housing entrance
With the contact area increase of check-valves, the sensitivity of flow switch has been greatly improved.
4th, the inwall for making check-valves upper end is the inwall of coherent structure, reduces magnet circle and check-valves upper end concentricity
It is required that；Because the inwall of guide channel does not have exposed magnet circle, the possibility of the inwall absorption iron filings of guide channel reduces, further
The appearance of stuck situation is formed between the inwall and lead of reduction guide channel.
5th, in order that the magnetic force of magnet circle smoothly can form cooperation, the check-valves with the tongue tube in non-return valve seat
The outer wall of upper end opens up some sulculuses, makes exposed corresponding to small groove location on magnet circle.
Brief description of the drawings
Fig. 1 is that the flow switch of the utility model prior art is applied to the lateral partial structurtes sectional view of the pump housing.
Fig. 2 is the configuration schematic diagram of prior art.
Fig. 3 is the structural representation of check-valves in Fig. 2.
Fig. 4 is Fig. 3 cross section structure diagram.
Fig. 5 and Fig. 6 is the structural representation at other visual angle in Fig. 3 respectively.
Fig. 7 is the lateral partial structurtes sectional view that flow switch of the present utility model is applied to the pump housing.
Fig. 8 is configuration schematic diagram of the present utility model.
Fig. 9 is the structural representation of check-valves in Fig. 8.
Figure 10 is Fig. 9 cross section structure diagram.
Figure 11 and Figure 12 is the structural representation at other visual angle in Fig. 9 respectively.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
Embodiment：As shown in Figure 7 and Figure 8, flow switch, including non-return valve seat 1, with non-return valve seat coordinate check-valves 2,
Return spring 3 between non-return valve seat and check-valves, the lead 11 on the non-return valve seat are inserted in the check-valves
In guide channel, the upper end open of the guide channel 21 is longitudinally disposed, and it is centrally located on the axis of the lead, described
The lower ending opening of guide channel is located in the side wall of the check-valves, is transverse opening 22.
As shown in figure 9, the guide channel 21 is polygon prism shape, inwall and the lead of the guide channel 21
Coordinate between 11 for linear contact lay, the space between the inwall and the lead 11 of the guide channel 21 is sediment outflow passage.
It is directed to passage and is changed to polygon prism shape（Such as triangular prism, quadrangular, pentagonal prism, six prisms）, lead（Feel
Answer cylinder）Be changed to line cooperation with the face of prior art with guide channel, the inwall of guide channel and the lead it
Between can form more bigger spaces, be sediment outflow passage, reduction sand, iron filings be stuck in guide channel inwall and lead it
Between possibility, reduce even avoid stuck situation from occurring.
As further improving and supplementing to above-mentioned technical proposal, the utility model uses following technical measures：Such as Fig. 7
Shown in Figure 10, in addition to magnet circle 4, the magnet circle 9 are arranged in the wall body of check-valves upper end.In the prior art, such as Fig. 2
Shown in Fig. 4, the inwall of check-valves upper end opens up recessed circle, and magnet circle is arranged in recessed circle, and magnet circle needs with guide channel
Strict concentricity requirement, it is therefore desirable to have higher production and processing required precision, also to there is assembly precision requirement.
For the technical program, the inwall at least making check-valves upper end is the inwall of coherent structure, is avoided by magnetic
Iron ring produces the destruction of structure continuity, also reduces the requirement of magnet circle and check-valves upper end concentricity, advantageously reduces and adds
Work precision, production and processing cost is advantageously reduced, be also beneficial to magnet circle 4 easy to setup, convenient production and processing and assembling.Due to
The inwall of guide channel does not have exposed magnet circle, and the possibility of the inwall absorption iron filings of guide channel reduces, further reduces and be oriented to
The appearance of stuck situation is formed between the inwall and lead of passage.
Coordinate in order that the magnetic force of magnet circle 4 can be formed smoothly with the tongue tube in non-return valve seat, such as Figure 10 and figure
Shown in 12, the outer wall of the check-valves upper end opens up some sulculuses 23, and the sulculus extends to the magnet circle 4, makes the magnetic
It is exposed to correspond to the small groove location on iron ring.
As shown in Fig. 8, Figure 11 and Figure 12, the check-valves bottom is to be inverted taper type structure 24, the inversion frustum
Vertically-arranged sets some guiding ribs 25 in shape structure, and the guiding rib is distributed in emission center shape and forms swirling.
The distribution as it can be seen in figures 5 and 6, guiding rib 25 of the prior art is centrosymmetric, the effect being vortexed is formed to current
It is poor.
For corresponding the technical program, as shown in FIG. 11 and 12, check-valves bottom uses the guiding rib of swirling distribution（
It is properly termed as angularly disposed guiding rib）, when current pass through check-valves, flow action has a shearing force, made on guiding rib
Check-valves produces rotary motion（Similar waterwheel）, discharged so as to which sand grains is rotated at polygon corner, avoid check-valves stuck.
In order to facilitate production and processing, every guiding rib 25 is vertical bar shaped.Certainly, guiding rib is shaped form muscle, and
Feasible.
As shown in figs, evagination has seal ring seat 26 on the check-valves 2, and the seal ring seat seals with unification
Packing ring 5, the seal washer 5 are arranged far from the side of the non-return valve seat, the seal ring seat and the inversion taper type
Sealing fit portion 27 is set between structure, and the sealing fit portion is cylindrical, and the thickness of the sealing fit portion is more than described
It is inverted the thickness of taper type structure.
As shown in fig. 7, the thickness D of sealing fit portion, the thickness of corresponding position has more increase more in the prior art
（As shown in Figure 1）So that the cooperation area of the sealing ring on check-valves and the pump housing increases, and what further reduction current leaked can
Energy.Specifically, the thickness of sealing fit portion adds, and corresponding taper type structural thickness of being inverted reduces, therefore two kinds total
Thickness remains unchanged substantially.
As is illustrated by figs. 11 and 12, the surface of the sealing fit portion sets some grooves 28, and the groove is longitudinally disposed,
And with the stagger setting of guiding rib 25.The groove set up, add the area that check-valves is located at pump housing inner chamber.The pump housing works
When, the contact area increase of the water and check-valves of pump housing entrance.That is, the current needed in flow switch trigger action
In the case of thrust identical, required current are smaller.Flow switch detection critical flow is 0.25-0.3 m3/ in the prior art
H, it is 0.15-0.2 m3/h that the flow switch that the technical program is related to, which can detect critical flow, has greatly improved flow switch
Sensitivity.
As shown in figures 7 and 12, it is described in order to increase sealing fit portion 27 and the sealing effectiveness of the sealing ring 7 on the pump housing 6
Groove longitudinal direction depth is less than the thickness of the sealing fit portion, and the openend of the groove is located under the sealing fit portion
End.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model.Above-mentioned
In embodiment, the utility model can have various modifications and variations.It is all within the spirit and principles of the utility model, made
Any modification, equivalent substitution and improvements etc., should be included within the scope of protection of the utility model.
Claims (8)
1. flow switch, including non-return valve seat and non-return valve seat coordinate check-valves, between non-return valve seat and check-valves
Return spring, the lead on the non-return valve seat are inserted in the guide channel in the check-valves, the upper end of the guide channel
It is open longitudinally disposed, it is centrally located on the axis of the lead, and the lower ending opening of the guide channel is located at the non-return
Be transverse opening in the side wall of valve, it is characterised in that the guide channel is polygon prism shape, the inwall of the guide channel with
Coordinate between the lead for linear contact lay, the space between the inwall of the guide channel and the lead leads to for sediment outflow
Road.
2. flow switch according to claim 1, it is characterised in that be also arranged on non-return including magnet circle, the magnet circle
In the wall body of valve upper end.
3. flow switch according to claim 2, it is characterised in that the outer wall of the check-valves upper end opens up some sulculuses,
The sulculus extends to the magnet circle, makes exposed corresponding to the small groove location on the magnet circle.
4. flow switch according to claim 1, it is characterised in that the check-valves bottom is inversion taper type structure,
Vertically-arranged sets some guiding ribs in the inversion taper type structure, and the guiding rib is distributed in emission center shape and forms whirlpool
Shape.
5. flow switch according to claim 4, it is characterised in that every guiding rib is vertical bar shaped.
6. flow switch according to claim 4, it is characterised in that evagination has seal ring seat on the check-valves, described close
Seal ring seat is arranged far from the side of the non-return valve seat with unification seal washer, the seal washer, the seal ring seat with
Sealing fit portion is set between the inversion taper type structure, the sealing fit portion is cylindrical, the sealing fit portion
Thickness is more than the thickness of the inversion taper type structure.
7. flow switch according to claim 6, it is characterised in that the surface of the sealing fit portion sets some grooves,
The groove is longitudinally disposed, and with the guiding rib stagger setting.
8. flow switch according to claim 7, it is characterised in that groove longitudinal direction depth is less than the sealing and coordinated
The thickness in portion, the openend of the groove are located at the lower end of the sealing fit portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720660361.8U CN207080656U (en) | 2017-06-08 | 2017-06-08 | Flow switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720660361.8U CN207080656U (en) | 2017-06-08 | 2017-06-08 | Flow switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207080656U true CN207080656U (en) | 2018-03-09 |
Family
ID=61437093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720660361.8U Active CN207080656U (en) | 2017-06-08 | 2017-06-08 | Flow switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207080656U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494118A (en) * | 2018-10-18 | 2019-03-19 | 珠海格力电器股份有限公司 | Air-conditioning system water flow switch and air-conditioning system |
-
2017
- 2017-06-08 CN CN201720660361.8U patent/CN207080656U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494118A (en) * | 2018-10-18 | 2019-03-19 | 珠海格力电器股份有限公司 | Air-conditioning system water flow switch and air-conditioning system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200715 Address after: Wenling City, Taizhou City, Zhejiang Province town of Ocean City 317525 Industrial Zone Patentee after: SHIMGE PUMP (ZHEJIANG) Co.,Ltd. Address before: Wenling City, Taizhou City, Zhejiang Province town of Ocean City 317525 Industrial Zone Patentee before: SHIMGE PUMP INDUSTRY Co.,Ltd. |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: ZHEJIANG FANGXIN ELECTROMECHANICAL Co.,Ltd. Assignor: SHIMGE PUMP (ZHEJIANG) Co.,Ltd. Contract record no.: X2021330000151 Denomination of utility model: Flow switch Granted publication date: 20180309 License type: Common License Record date: 20210828 |