CN214743378U

CN214743378U - Float flowmeter with check valve

Info

Publication number: CN214743378U
Application number: CN202121005876.7U
Authority: CN
Inventors: 张立丰; 褚柏聪
Original assignee: Yuyao Kingtai Instr Co ltd
Current assignee: Yuyao Kingtai Instr Co ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2021-11-16
Anticipated expiration: 2031-05-12

Abstract

The utility model relates to the technical field of float flowmeters, and discloses a float flowmeter with a check valve, which comprises a taper pipe, wherein the taper pipe consists of a taper pipe shell and a taper pipe inner cavity, a float for measuring gas flow is arranged in the taper pipe inner cavity, one end of the taper pipe shell is provided with a choke plug for blocking the taper pipe inner cavity, the other end of the taper pipe shell is provided with a gas inlet joint which can be communicated with the taper pipe inner cavity, and the surface of the taper pipe shell is provided with scale marks; and one end of the taper pipe close to the choke plug is provided with a check valve component. The utility model is suitable for a measure gaseous flow, convenient to use, rational in infrastructure, the practicality is strong, avoids receiving external atmospheric pressure's interference from taking place the series flow, further improves measurement accuracy.

Description

Float flowmeter with check valve

Technical Field

The utility model relates to a float flowmeter technical field specifically is a take float flowmeter of check valve.

Background

The float flowmeter is a device for calculating the flow rate by measuring a rotating part arranged in a direct-current pipeline, and is one of variable-area flowmeters; the structure of the rotameter comprises a conical pipe which is gradually enlarged from bottom to top and a floater which is arranged in the conical pipe and can freely rotate up and down along the central line of the pipe;

however, the conventional float flow meter for measuring air flow generally flows out directly from an outlet formed at one end of a taper pipe, and is easily disturbed by external air pressure to generate series flow, which affects the accuracy of the measurement result.

SUMMERY OF THE UTILITY MODEL

The utility model provides a take float flowmeter of check valve possesses the beneficial effect who avoids external atmospheric pressure to disturb, thereby has solved and has mentioned the interference that receives external atmospheric pressure among the above-mentioned background art and take place the series flow, can influence the problem of measuring result accuracy.

The utility model provides a following technical scheme: a float flowmeter with a check valve comprises a taper pipe, wherein the taper pipe consists of a taper pipe shell and a taper pipe inner cavity, a float used for measuring gas flow is arranged in the taper pipe inner cavity, a choke plug used for blocking the taper pipe inner cavity is installed at one end of the taper pipe shell, an air inlet joint capable of being communicated with the taper pipe inner cavity is installed at the other end of the taper pipe shell, and scale marks are arranged on the surface of the taper pipe shell;

wherein, the one end that the taper pipe is close to the bulkhead is installed the check valve subassembly.

As an alternative to the float flowmeter with check valve of the present invention, wherein: check valve unit spare is including installing the first protective housing in the taper pipe shell, one side fixedly connected with disk seat of first protective housing, it has the internal thread cover to run through in the disk seat, internal thread cover threaded connection has the threaded rod, the one end fixedly connected with knob of threaded rod, and the threaded rod is located the other end fixedly connected with needle in the first protective housing, the needle activity runs through there is first fixed block, first fixed block is inlayed the one end of first protective housing.

As an alternative to the float flowmeter with check valve of the present invention, wherein: and a second sealing ring is fixed on the outer surface of one end, close to the threaded rod, of the valve needle, and the edge of the second sealing ring is propped against the inner wall of the first protection shell.

As an alternative to the float flowmeter with check valve of the present invention, wherein: the check valve assembly comprises a second protective shell arranged in the taper pipe shell, and one end of the second protective shell is provided with a spacing hole communicated with the inner cavity of the taper pipe;

and an air outlet joint is arranged in the second protective shell and is connected with the inner wall of the second protective shell by penetrating through the second fixed block.

As an alternative to the float flowmeter with check valve of the present invention, wherein: the one end of the joint of giving vent to anger is fixed with the arc lug, and the surface of arc lug has cup jointed the silica gel diaphragm, the edge of silica gel diaphragm is held with the inner wall counterbalance of second protective housing, the joint of giving vent to anger is close to one of arc lug and has been served the through-hole, and the other end of the joint of giving vent to anger is through running through third fixed block and second protective housing fixed connection.

As an alternative to the float flowmeter with check valve of the present invention, wherein: the valve needle is of a conical structure and is movably connected with the spacing hole formed in the second protection end part.

As an alternative to the float flowmeter with check valve of the present invention, wherein: the choke plug with in the clearance of taper pipe shell, first protective housing with in the clearance of taper pipe shell, the second protective housing with in the clearance of taper pipe shell and the third fixed block with all be provided with first sealing washer in the clearance of second fixed block.

The utility model discloses possess following beneficial effect:

the utility model discloses convenient to use, rational in infrastructure, the practicality is strong, stops up with the vexed head through the one end to the taper pipe, sets up air inlet joint through the other end at the taper pipe, sets up check valve subassembly in the one end that the taper pipe is close to the vexed head, adjusts the size of rotating needle and interval aperture clearance through adjust knob to make the air current formation malleation of outflow open the silica gel diaphragm and connect the outflow from giving vent to anger, avoid external air current to form the series flow from giving vent to anger and connecting the entering taper pipe inner chamber, thereby further improve measurement accuracy.

Drawings

Fig. 1 is a sectional view of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a schematic structural view of a part of the check valve of the present invention.

Fig. 4 is a schematic structural view of another part of the check valve of the present invention.

In the figure: 1. a cone housing; 2. an inner cavity of the taper pipe; 3. a float; 4. choke plug; 5. an air inlet joint; 6. a check valve assembly; 7. a first protective case; 8. a valve seat; 9. an internal thread sleeve; 10. a threaded rod; 11. a knob; 12. a valve needle; 13. a first fixed block; 14. a second seal ring; 15. a second protective shell; 16. an air outlet joint; 17. a membrane; 18. an arc-shaped bulge; 19. a second fixed block; 20. a third fixed block; 21. a first seal ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-4, a float 3 flowmeter with a check valve comprises a conical pipe, wherein the conical pipe is composed of a conical pipe shell 1 and a conical pipe inner cavity 2, a float 3 for measuring gas flow is arranged in the conical pipe inner cavity 2, one end of the conical pipe shell 1 is provided with a choke plug 4 for blocking the conical pipe inner cavity 2, the other end of the conical pipe shell 1 is provided with an air inlet joint 5 which can be communicated with the conical pipe inner cavity 2, and the surface of the conical pipe shell 1 is provided with scale marks;

wherein, the one end that the taper pipe is close to bulkhead 4 installs check valve assembly 6.

What specifically say, this embodiment is through from the air inlet connector 5 in admitting air to taper pipe inner chamber 2, utilizes float 3 and scale mark to calculate and get into taper pipe inner chamber 2 air current size, through setting up check valve subassembly 6, because the other end of taper pipe inner chamber 2 is stifled by vexed head 4, gaseous can only flow out in through check valve subassembly 6, can utilize check valve subassembly 6 to realize the technical essential of this scheme like this.

Example 2

On the basis of this embodiment 1, check valve unit 6 is including installing first protecting crust 7 in taper pipe shell 1, one side fixedly connected with disk seat 8 of first protecting crust 7, it has internal thread cover 9 to run through in

disk seat

8, 9 threaded connection of internal thread cover have threaded rod 10, the one end fixedly connected with knob 11 of threaded rod 10, and threaded rod 10 is located the other end fixedly connected with needle 12 of first protecting crust 7, needle 12 activity runs through has first fixed block 13, the one end at first protecting crust 7 is inlayed to first fixed block 13.

Specifically, in this embodiment, by setting the knob 11 and the threaded rod 10, when the device is used, the threaded rod 10 is relatively moved in the internal thread sleeve 9 by rotating the knob 11, so that the threaded rod 10 can drive the valve needle 12 to horizontally move, and the technical field of this scheme is further realized.

Example 3

In the embodiment 2, a second sealing ring 14 is fixed on the outer surface of one end of the valve needle 12 close to the threaded rod 10, and the edge of the second sealing ring 14 abuts against the inner wall of the first protective shell 7.

What specifically say, this embodiment is through setting up second sealing washer 14, and this sealing washer is wear-resisting and the good rubber material of leakproofness, utilizes second sealing washer 14's sealing characteristic, can seal 7 partial inner chambers of first protective housing to prevent that the air current from permeating away from the protective housing inner chamber, reduce the atmospheric pressure of taper pipe inner chamber 2, thereby influence the accuracy of air current measurement.

Example 4

On the basis of the embodiment 3, the check valve assembly 6 comprises a second protective shell 15 installed in the taper pipe shell 1, and one end of the second protective shell 15 is provided with a spacing hole capable of being communicated with the taper pipe inner cavity 2;

wherein, be provided with in the second protective housing 15 and go out gas connection 16, it is connected with second protective housing 15 inner wall through running through second fixed block 19 to go out gas connection 16.

Specifically, in this embodiment, the second protective shell 15 is provided with the intermediate hole at one end thereof, so that the air flow can flow out from the air outlet joint 16 through the intermediate hole, thereby further completing the technical field of the present solution.

Example 5

On the basis of this embodiment 4, the one end of the joint 16 of giving vent to anger is fixed with the arc lug, and the surface of arc lug has cup jointed silica gel diaphragm 17, and the edge of silica gel diaphragm 17 offsets with the inner wall of second protective housing 15, and the joint 16 of giving vent to anger is close to one of arc lug and has served the through-hole, and the other end of the joint 16 of giving vent to anger is through running through third fixed block 20 and second protective housing 15 fixed connection.

Specifically, in this embodiment, by arranging the silicone membrane 17 and the arc-shaped protrusion, when the air flow flows in from the intermediate hole, the air flow can be guided by the arc-shaped protrusion, and when the air flow is positive pressure, the silicone membrane 17 and the inner wall of the second protective shell 15 are separated and are not abutted, that is, opened, so that the air flow can flow out from the air outlet joint 16 through the arranged through hole, thereby implementing the technical requirement in embodiment 4.

Example 6

In this embodiment 5, the valve needle 12 is a conical structure, and the valve needle 12 is movably connected to the intermediate hole formed at the end of the second protective shell 15.

Specifically, in this embodiment, the valve needle 12 is moved, and because the valve needle 12 has a conical structure, the gap between the valve needle 12 and the clearance hole can be adjusted, so that the size of the air flow entering the inner cavity of the second protective casing 15 can be controlled, and the technical essential of this embodiment 5 is further realized.

Example 7

On the basis of this embodiment 6, the first sealing rings 21 are disposed in the gap between the choke plug 4 and the taper pipe housing 1, the gap between the first protection shell 7 and the taper pipe housing 1, the gap between the second protection shell 15 and the taper pipe housing 1, and the gap between the third fixing block 20 and the second fixing block 19.

Specifically, in the present embodiment, the first sealing ring 21 is made of a fluororubber material, and the sealing property of the first sealing ring 21 is utilized to prevent the airflow from permeating through the gap in the present embodiment, so as to reduce the air pressure in the inner cavity 2 of the taper pipe, thereby affecting the accuracy of airflow measurement.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a take float flowmeter of check valve, includes the taper pipe, its characterized in that: the taper pipe is composed of a taper pipe shell (1) and a taper pipe inner cavity (2), a floater (3) used for measuring gas flow is arranged in the taper pipe inner cavity (2), a choke plug (4) used for blocking the taper pipe inner cavity (2) is installed at one end of the taper pipe shell (1), an air inlet joint (5) capable of being communicated with the taper pipe inner cavity (2) is installed at the other end of the taper pipe shell (1), and scale marks are arranged on the surface of the taper pipe shell (1);

wherein, check valve subassembly (6) are installed to the one end that the taper pipe is close to vexed head (4), check valve subassembly (6) are including installing first protective housing (7) in taper pipe shell (1), one side fixedly connected with disk seat (8) of first protective housing (7), it has internal thread cover (9) to run through in disk seat (8), internal thread cover (9) threaded connection has threaded rod (10), and other end fixedly connected with needle (12) that threaded rod (10) are located first protective housing (7).

2. The float flow meter with check valve according to claim 1, wherein: the one end fixedly connected with knob (11) of threaded rod (10), needle (12) activity is run through and is had first fixed block (13), first fixed block (13) are inlayed the one end of first protective housing (7).

3. The float flow meter with check valve according to claim 2, wherein: and a second sealing ring (14) is fixed on the outer surface of one end, close to the threaded rod (10), of the valve needle (12), and the edge of the second sealing ring (14) is propped against the inner wall of the first protective shell (7).

4. The float flow meter with check valve according to claim 3, wherein: the check valve component (6) comprises a second protective shell (15) arranged in the taper pipe shell (1), and one end of the second protective shell (15) is provided with a spacing hole communicated with the taper pipe inner cavity (2);

an air outlet joint (16) is arranged in the second protective shell (15), and the air outlet joint (16) is connected with the inner wall of the second protective shell (15) through a second fixing block (19).

5. The float flow meter with check valve according to claim 4, wherein: the one end of joint (16) of giving vent to anger is fixed with the arc lug, and the surface of arc lug has cup jointed silica gel diaphragm (17), the edge of silica gel diaphragm (17) offsets with the inner wall of second protective housing (15) and holds, the joint (16) of giving vent to anger is close to one of arc lug and has served the through-hole, and the other end of joint (16) of giving vent to anger is through running through third fixed block (20) and second protective housing (15) fixed connection.

6. The float flow meter with check valve according to claim 5, wherein: the valve needle (12) is of a conical structure, and the valve needle (12) is movably connected with the spacing hole formed in the second protection end portion.

7. The float flow meter with check valve of claim 6, wherein: choke plug (4) with in the clearance of taper pipe shell (1), first protective housing (7) with in the clearance of taper pipe shell (1), second protective housing (15) with in the clearance of taper pipe shell (1) and third fixed block (20) with all be provided with first sealing washer (21) in the clearance of second fixed block (19).