CN208889567U - A kind of differential pressure flow switch with filter structure - Google Patents
A kind of differential pressure flow switch with filter structure Download PDFInfo
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- CN208889567U CN208889567U CN201821598474.0U CN201821598474U CN208889567U CN 208889567 U CN208889567 U CN 208889567U CN 201821598474 U CN201821598474 U CN 201821598474U CN 208889567 U CN208889567 U CN 208889567U
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Abstract
A kind of differential pressure flow switch with filter structure, belong to high-performance, intelligent instrumentation field, including terminal box, conducting wire, microswitch, sealing ring, one group of screw, upper magnet, upper copper body, spring, lower magnet, diaphragm, lower copper body, upper valve port, lower valve port and adapter；Wherein the bottom surface of first groove is equipped with filter screen, the upper end of the filter screen is equipped with and cap, and permanent magnetism is equipped in the lower end of the first through hole, and the permanent magnetism is annular shape, the inner wall of the outer wall fitting first through hole of the permanent magnetism, the upper end of the permanent magnetism and the lower end surface of filter screen connect.The utility model is increased filter structure and permanent magnetism in the two-end structure that differential pressure flow switchs, it can be with impurity screening, removing rust is removed simultaneously, prevent impurity and iron rust from entering valve body, it only needs periodically to remove adapter coupling, clean filter screen and permanent magnetism, can differential pressure flow switch under the situation of long-time service because caused by the impurity of water route the problem of damage parts, failure.
Description
Technical field
The utility model belongs to high-performance, intelligent instrumentation field, and in particular, to a kind of with filter structure
Differential pressure flow switch.
Background technique
Currently, most of air-conditioner water system needs to judge the water flow of system, then provides and judge that signal adds
With control, reach efficient and energy-efficient purpose.And existing target type flow switch is used to determine water flow, by target-type flow
Switch is serially connected on system pipeline, still, is had the following disadvantages: 1, is unable to accurately control flow, by the shadow of in-site installation situation
Sound is larger；2, the pressure drop of 2-3 meter water column can only be generated to water system, the useful range for being supplied to client reduces；3, for peace
Reload request is higher, cannot be mounted on before and after valve, elbow, more demanding to the straight pipe of installation front and rear pipes；4, using ripple
Component of the pipe as water and electric isolution, pressure-bearing are generally only 10bar, bellows outside and coupled metal parts and atmosphere
It directly contacts, often there is condensed water generation, if liquid is lower than 0 DEG C, be possible to freeze to lose flow switch outside bellows
Effect, and electric component is influenced easily to occur corroding to cause poor contact by condensed water, while target type flow switch uses
Big pressure drop and the design of soft target piece, moving component are unable to normal reset and generate failure to fatigue failure is also easy to produce；5, moving component
More, the performance of target piece, bellows and spring and microswitch all has an impact to product, and target flow Long-term bend, which is pressurized, is easy fatigue
Failure, bellows is mobile for a long time to be easy leakage, and microswitch is influenced to be easy to produce corrosion by condensation and corrosive atmosphere to be followed by
Touch bad Deng apparatus failures.
Therefore there is differential flow switch to replace target type flow switch, still, do not have in traditional differential pressure flow switch
There is filter structure, there is impurity, iron rust etc. in air-conditioning waterway pipe, the impurity, iron rust in water route can enter in valve body, accumulate over a long period
Be easy to cause valve port to block, also result in rubber diaphragm breakage, cause pressure release that diaphragm can not be stretched, cause flow switch without
Action signal.
Utility model content
Purpose of utility model: the purpose of the utility model is to provide a kind of the differential pressure flow switch with filter structure, solution
Due to the problem of containing impurity in water route, the valve port of flow switch is caused to block after differential pressure flow of having determined switch long-time service.
Technical solution: the utility model provides a kind of differential pressure flow switch with filter structure, including terminal box, leads
Line, microswitch, sealing ring, one group of screw, upper magnet, upper copper body, spring, lower magnet, diaphragm, lower copper body, upper valve port, lower valve
Mouth and adapter, the terminal box is connect with upper copper body, and conducting wire is connect with terminal box, and the microswitch is arranged in wiring
In box, the sealing ring is arranged in terminal box, and the upper copper body is fixedly connected with lower copper body by screw, and upper copper body and
Cavity is formed inside lower copper body, the upper magnet is arranged in upper copper body, and the upper end of upper magnet is connect with microswitch,
The spring, lower magnet and diaphragm are arranged in cavity, and the upper end of the spring is bonded with the inner wall of upper copper body upper end, institute
It states lower magnet to be arranged on diaphragm, the lower end of the spring is set on the upper end of lower magnet, and the upper valve port setting exists
On the outer wall of upper copper body, the lower valve port is arranged on the outer wall of lower copper body, is equipped with switching on the upper valve port and lower valve port
Head, and adapter is threadedly coupled with upper valve port and lower valve port；Wherein, the outer wall of the adapter be equipped with external screw thread, described turn
The inside of connector is equipped with first through hole, and one end of the adapter is equipped with the first groove, and the inner wall of first groove is equipped with interior
Screw thread, the bottom surface of first groove are equipped with filter screen, and the upper end of the filter screen is equipped with and cap, under the first through hole
In end be equipped with permanent magnetism, the permanent magnetism be annular shape, the permanent magnetism outer wall fitting first through hole inner wall, the permanent magnetism it is upper
End and the lower end surface of filter screen connect.The differential pressure flow switch with filter structure of the utility model, is opened in differential pressure flow
The two-end structure of pass is increased filter structure and permanent magnetism, can be with impurity screening, while removing removing rust, prevents impurity and iron rust from entering
Valve body only needs periodically remove adapter coupling, cleans filter screen and permanent magnetism, can differential pressure flow switch long-time service situation
Caused by the lower impurity because of water route the problem of damage parts, failure.
Further, the above-mentioned differential pressure flow switch with filter structure, the spring is back taper, and spring is pressed
It is gradually reduced according to sequence diameter of section from top to bottom.The spring of the back taper of setting can carry out good with upper copper body and lower magnet
Good transition connection.
Further, the above-mentioned differential pressure flow switch with filter structure, the diaphragm is disc-shaped, the diaphragm
Centre is equipped with caveli body, and the diaphragm is equipped with bulge loop, and the protrusion direction of bulge loop is upward, and the section of the bulge loop is arch
The two sides up and down of diaphragm are arranged in shape, the bulge loop and caveli body.The diaphragm of setting is able to carry out the good fixation of lower magnet,
And guarantee the performance of diaphragm.
Further, the above-mentioned differential pressure flow switch with filter structure, the upper end of the upper magnet, which is equipped with, to be fixed
Portion, the diameter of section of the fixed part are greater than the diameter of upper magnet, and the upper magnet is arranged in terminal box, and fixed part
Lower end surface is bonded with terminal box inner wall, and the outer wall of the lower magnet is step type.The upper magnet of setting can be in upper copper body on
Lower movement, to touch microswitch.
Further, the above-mentioned differential pressure flow switch with filter structure, the inner wall of the permanent magnetism is zigzag.Inner wall
For zigzag permanent magnetism, iron rust can be gathered in the recessed position of permanent magnetism inner wall, can good storage assemble iron rust, simultaneously
Guarantee that medium flows in adapter.
Further, the above-mentioned differential pressure flow switch with filter structure, the filter screen is equipped with guide pipe, described
Guide pipe and filter screen are connected far from the end face of permanent magnetism, and the outer wall of the guide pipe is equipped with first boss, at the guide pipe
In in the first groove.The guide pipe of setting can move in the first groove, drive filter screen mobile, flow is increased suddenly
Or medium the case where initially entering, can buffer medium to the impact force of filter screen.
Further, the above-mentioned differential pressure flow switch with filter structure, the inner wall of first groove are equipped with retaining ring,
The retaining ring is equipped with second boss far from the end of filter screen, and the upper end of the guide pipe is arranged in the lower end of retaining ring.
Differential pressure flow switch with filter structure, is capable of the movement of restricted guidance pipe, is formed and limited to conduit.
Further, the above-mentioned differential pressure flow switch with filter structure, the retaining ring is interior equipped with buffer spring, described
The upper end of buffer spring is bonded with the inner wall of second boss, and the lower end of the buffer spring is fitted in the upper surface of guide pipe
On.The buffer spring of setting improves the cushion performance of filter screen, while flow reduction or out-of-date without medium flow field, can be by mistake
Strainer returns to original position.
Further, the above-mentioned differential pressure flow switch with filter structure, the upper surface of the first boss can be with gear
The lower end surface of circle is bonded.
Further, the above-mentioned differential pressure flow switch with filter structure, it is logical that the inside of the guide pipe is equipped with second
Hole, second through-hole are connected to first through hole.
Above-mentioned technical proposal can be seen that the utility model has the following beneficial effects: described in the utility model have
The differential pressure flow of filter structure switchs, and simple and reasonable for structure, easy to use, application cost is low, and adaptability is good, and the application is instantly
When the pressure of valve port is greater than upper valve port, diaphragm protrusion drives lower magnet positions to rise, effect of the upper magnet by lower magnets magnetic fields power
Synchronous rising is followed, to touch microswitch movement, forms on-off signal；The filter screen and permanent magnetism of setting can be effectively prevent
Impurity and iron rust enter in valve body, extend the service life of differential pressure flow switch, have great popularization value.
Detailed description of the invention
Fig. 1 is the explosive view of the differential pressure flow Switching embodiments one described in the utility model with filter structure；
Fig. 2 is the structural schematic diagram of the differential pressure flow Switching embodiments one described in the utility model with filter structure；
Fig. 3 is the top view of the differential pressure flow Switching embodiments one described in the utility model with filter structure;
Fig. 4 is the structural schematic diagram of adapter embodiment one described in the utility model；
Fig. 5 is the structural schematic diagram of the differential pressure flow Switching embodiments two described in the utility model with filter structure；
Fig. 6 is the structural schematic diagram of adapter embodiment two described in the utility model.
In figure: terminal box 1, conducting wire 2, microswitch 3, sealing ring 4, screw 5, upper magnet 6, fixed part 61, upper copper body 7,
Spring 8, lower magnet 9, diaphragm 10, caveli body 101, bulge loop 102, lower copper body 11, upper valve port 12, lower valve port 13, adapter 14,
First through hole 141, the first groove 142, filter screen 143 and cap 144, permanent magnetism 145, cavity 15, guide pipe 16, first boss
161, the second through-hole 162, retaining ring 17, second boss 171, buffer spring 18.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
Describe the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " multiple "
It is two or more, unless otherwise restricted clearly.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it
"lower" may include that the first and second features directly contact, and also may include that the first and second features are not direct contacts but lead to
Cross the other characterisation contact between them.Moreover, fisrt feature includes above the second feature " above ", " above " and " above "
One feature is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.First is special
Sign is directly below and diagonally below the second feature including fisrt feature under the second feature " below ", " below " and " below ", or only
Indicate that first feature horizontal height is less than second feature.
Embodiment one
The differential pressure flow switch with filter structure as shown in Figs 1-4, including terminal box 1, conducting wire 2, microswitch 3,
4, one groups of screws 5 of sealing ring, upper magnet 6, upper copper body 7, spring 8, lower magnet 9, diaphragm 10, lower copper body 11, upper valve port 12, lower valve
Mouth 13 and adapter 14, the terminal box 1 is connect with upper copper body 7, and conducting wire 2 is connect with terminal box 1, the microswitch 3
It is arranged in terminal box 1, the sealing ring 4 is arranged in terminal box 1, and the upper copper body 7 and lower copper body 11 are fixed by screw 5
Connection, and cavity 15 is formed inside upper copper body 7 and lower copper body 11, the upper magnet 6 is arranged in upper copper body 7, and upper magnetic
The upper end of body 6 is connect with microswitch 3, and the spring 8, lower magnet 9 and diaphragm 10 are arranged in cavity 15, the spring 8
Upper end be bonded with the inner wall of upper 7 upper end of copper body, the lower magnet 9 is arranged on diaphragm 10, the lower end of the spring 8
It is set on the upper end of lower magnet 9, the upper valve port 12 is arranged on the outer wall of upper copper body 7, and the setting of lower valve port 13 exists
On the outer wall of lower copper body 11, adapter 14, and adapter 14 and upper valve port are equipped on the upper valve port 12 and lower valve port 13
12 and lower valve port 13 be threadedly coupled；Wherein, the outer wall of the adapter 14 is equipped with external screw thread, and the inside of the adapter 14 is equipped with
First through hole 141, one end of the adapter 14 are equipped with the first groove 142, and the inner wall of first groove 142 is equipped with interior spiral shell
Line, the bottom surface of first groove 142 are equipped with filter screen 143, and the upper end of the filter screen 143 is equipped with and cap 144, and described the
Permanent magnetism 145 is equipped in the lower end of one through-hole 141, the permanent magnetism 145 is annular shape, the outer wall fitting first of the permanent magnetism 145
The upper end of the inner wall of through-hole 141, the permanent magnetism 145 is connect with the lower end surface of filter screen 143.Wherein, spring 8 is back taper,
And spring 8 is gradually reduced according to sequence diameter of section from top to bottom.In addition, diaphragm 10 is disc-shaped, the diaphragm 10
Centre is equipped with caveli body 101, and the diaphragm 10 is equipped with bulge loop 102, and the protrusion direction of bulge loop 102 is upward, described convex
The section of ring 102 is arch, and the two sides up and down of diaphragm 10 are arranged in the bulge loop 102 and caveli body 101.In addition, upper magnet 6
Upper end be equipped with fixed part 61, the diameter of section of the fixed part 61 is greater than the diameter of upper magnet 6, and the upper magnet 6 is arranged
In terminal box 1, and the lower end surface of fixed part 61 is bonded with 1 inner wall of terminal box, and the outer wall of the lower magnet 9 is step type.
Embodiment two
The differential pressure flow switch with filter structure as shown in Figs. 1-5, including terminal box 1, conducting wire 2, microswitch 3,
4, one groups of screws 5 of sealing ring, upper magnet 6, upper copper body 7, spring 8, lower magnet 9, diaphragm 10, lower copper body 11, upper valve port 12, lower valve
Mouth 13 and adapter 14, the terminal box 1 is connect with upper copper body 7, and conducting wire 2 is connect with terminal box 1, the microswitch 3
It is arranged in terminal box 1, the sealing ring 4 is arranged in terminal box 1, and the upper copper body 7 and lower copper body 11 are fixed by screw 5
Connection, and cavity 15 is formed inside upper copper body 7 and lower copper body 11, the upper magnet 6 is arranged in upper copper body 7, and upper magnetic
The upper end of body 6 is connect with microswitch 3, and the spring 8, lower magnet 9 and diaphragm 10 are arranged in cavity 15, the spring 8
Upper end be bonded with the inner wall of upper 7 upper end of copper body, the lower magnet 9 is arranged on diaphragm 10, the lower end of the spring 8
It is set on the upper end of lower magnet 9, the upper valve port 12 is arranged on the outer wall of upper copper body 7, and the setting of lower valve port 13 exists
On the outer wall of lower copper body 11, adapter 14, and adapter 14 and upper valve port are equipped on the upper valve port 12 and lower valve port 13
12 and lower valve port 13 be threadedly coupled；Wherein, the outer wall of the adapter 14 is equipped with external screw thread, and the inside of the adapter 14 is equipped with
First through hole 141, one end of the adapter 14 are equipped with the first groove 142, and the inner wall of first groove 142 is equipped with interior spiral shell
Line, the bottom surface of first groove 142 are equipped with filter screen 143, and the upper end of the filter screen 143 is equipped with and cap 144, and described the
Permanent magnetism 145 is equipped in the lower end of one through-hole 141, the permanent magnetism 145 is annular shape, the outer wall fitting first of the permanent magnetism 145
The upper end of the inner wall of through-hole 141, the permanent magnetism 145 is connect with the lower end surface of filter screen 143.Wherein, spring 8 is back taper,
And spring 8 is gradually reduced according to sequence diameter of section from top to bottom.In addition, diaphragm 10 is disc-shaped, the diaphragm 10
Centre is equipped with caveli body 101, and the diaphragm 10 is equipped with bulge loop 102, and the protrusion direction of bulge loop 102 is upward, described convex
The section of ring 102 is arch, and the two sides up and down of diaphragm 10 are arranged in the bulge loop 102 and caveli body 101.In addition, upper magnet 6
Upper end be equipped with fixed part 61, the diameter of section of the fixed part 61 is greater than the diameter of upper magnet 6, and the upper magnet 6 is arranged
In terminal box 1, and the lower end surface of fixed part 61 is bonded with 1 inner wall of terminal box, and the outer wall of the lower magnet 9 is step type.
The inner wall of permanent magnetism 145 as shown in FIG. 6 is zigzag.Filter screen 143 is equipped with guide pipe 16, the guide pipe 16
It is connect with filter screen 143 far from the end face of permanent magnetism 145, the outer wall of the guide pipe 16 is equipped with first boss 161, the guiding
Pipe 16 is in the first groove 142.The inner wall of first groove 142 is equipped with retaining ring 17, the end of the retaining ring 17 far from filter screen 143
Portion is equipped with second boss 171, and the upper end of the guide pipe 16 is arranged in the lower end of retaining ring 17.Buffering is equipped in retaining ring 17
The upper end of spring 18, the buffer spring 18 is bonded with the inner wall of second boss 171, the lower end patch of the buffer spring 18
It closes on the upper surface of guide pipe 16.The upper surface of first boss 161 can be bonded with the lower end surface of retaining ring 17.Guide pipe 16 it is interior
Portion is equipped with the second through-hole 162, and second through-hole 162 is connected to first through hole 141.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvement can also be made, these improvement also should be regarded as
The protection scope of the utility model.
Claims (10)
1. a kind of differential pressure flow switch with filter structure, it is characterised in that: opened including terminal box (1), conducting wire (2), fine motion
Close (3), sealing ring (4), one group of screw (5), upper magnet (6), upper copper body (7), spring (8), lower magnet (9), diaphragm (10), under
Copper body (11), upper valve port (12), lower valve port (13) and adapter (14), the terminal box (1) connect with upper copper body (7), and
Conducting wire (2) is connect with terminal box (1), and in terminal box (1), sealing ring (4) setting is being connect for microswitch (3) setting
In wire box (1), upper copper body (7) the He Xiatong body (11) is fixedly connected by screw (5), and upper copper body (7) He Xiatong body
(11) internal to form cavity (15), upper magnet (6) setting in upper copper body (7), and the upper end of upper magnet (6) with it is micro-
Dynamic switch (3) connection, the spring (8), lower magnet (9) and diaphragm (10) be arranged it is interior in cavity (15), the spring (8) it is upper
End is bonded with the inner wall of upper copper body (7) upper end, and the lower magnet (9) is arranged on diaphragm (10), under the spring (8)
End is set on the upper end of lower magnet (9), and the upper valve port (12) is arranged on the outer wall of upper copper body (7), the lower valve
Mouth (13) is arranged on the outer wall of lower copper body (11), is equipped with adapter (14) on the upper valve port (12) and lower valve port (13),
And adapter (14) is threadedly coupled with upper valve port (12) and lower valve port (13)；Wherein, the outer wall of the adapter (14) is equipped with
The inside of external screw thread, the adapter (14) is equipped with first through hole (141), and one end of the adapter (14) is equipped with the first groove
(142), the inner wall of first groove (142) is equipped with internal screw thread, and the bottom surface of first groove (142) is equipped with filter screen
(143), the upper end of the filter screen (143) is equipped with simultaneously cap (144), is equipped with forever in the lower end of the first through hole (141)
Magnetic (145), the permanent magnetism (145) are annular shape, and the inner wall of outer wall fitting first through hole (141) of the permanent magnetism (145) is described
The upper end of permanent magnetism (145) is connect with the lower end surface of filter screen (143).
2. the differential pressure flow switch according to claim 1 with filter structure, it is characterised in that: the spring (8) is
Back taper, and spring (8) is gradually reduced according to sequence diameter of section from top to bottom.
3. the differential pressure flow switch according to claim 2 with filter structure, it is characterised in that: the diaphragm (10) is
The centre of disc-shaped, the diaphragm (10) is equipped with caveli body (101), and the diaphragm (10) is equipped with bulge loop (102), and convex
The protrusion direction of ring (102) is upward, and the section of the bulge loop (102) is arch, the bulge loop (102) and caveli body (101)
It is arranged in the two sides up and down of diaphragm (10).
4. the differential pressure flow switch according to claim 3 with filter structure, it is characterised in that: the upper magnet (6)
Upper end be equipped with fixed part (61), the diameter of section of the fixed part (61) is greater than the diameter of upper magnet (6), the upper magnet
(6) setting is in terminal box (1), and the lower end surface of fixed part (61) is bonded with terminal box (1) inner wall, the lower magnet (9)
Outer wall be step type.
5. the differential pressure flow switch according to claim 1 with filter structure, it is characterised in that: the permanent magnetism (145)
Inner wall be zigzag.
6. the differential pressure flow switch according to claim 5 with filter structure, it is characterised in that: the filter screen
(143) guide pipe (16) are equipped with, the guide pipe (16) connect with filter screen (143) far from the end face of permanent magnetism (145), described
The outer wall of guide pipe (16) is equipped with first boss (161), and the guide pipe (16) is in the first groove (142).
7. the differential pressure flow switch according to claim 6 with filter structure, it is characterised in that: first groove
(142) inner wall is equipped with retaining ring (17), and the retaining ring (17) is equipped with second boss (171) far from the end of filter screen (143), institute
The upper end for stating guide pipe (16) is arranged in the lower end of retaining ring (17).
8. the differential pressure flow switch according to claim 7 with filter structure, it is characterised in that: in the retaining ring (17)
Equipped with buffer spring (18), the upper end of the buffer spring (18) is bonded with the inner wall of second boss (171), the buffering elastic
The lower end of spring (18) is fitted on the upper surface of guide pipe (16).
9. the differential pressure flow switch according to claim 8 with filter structure, it is characterised in that: the first boss
(161) upper surface can be bonded with the lower end surface of retaining ring (17).
10. the differential pressure flow switch according to claim 9 with filter structure, it is characterised in that: the guide pipe
(16) inside is equipped with the second through-hole (162), and second through-hole (162) is connected to first through hole (141).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821598474.0U CN208889567U (en) | 2018-09-29 | 2018-09-29 | A kind of differential pressure flow switch with filter structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821598474.0U CN208889567U (en) | 2018-09-29 | 2018-09-29 | A kind of differential pressure flow switch with filter structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208889567U true CN208889567U (en) | 2019-05-21 |
Family
ID=66514513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821598474.0U Active CN208889567U (en) | 2018-09-29 | 2018-09-29 | A kind of differential pressure flow switch with filter structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208889567U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847961A (en) * | 2020-09-25 | 2021-12-28 | 怀化建南电子科技有限公司 | Low temperature resistant intelligent flow counter |
-
2018
- 2018-09-29 CN CN201821598474.0U patent/CN208889567U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847961A (en) * | 2020-09-25 | 2021-12-28 | 怀化建南电子科技有限公司 | Low temperature resistant intelligent flow counter |
| CN113847961B (en) * | 2020-09-25 | 2024-03-26 | 怀化建南电子科技有限公司 | Low-temperature-resistant intelligent flow counter |
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