CN216078481U

CN216078481U - Vacuum breaker valve with exhaust function

Info

Publication number: CN216078481U
Application number: CN202122587121.9U
Authority: CN
Inventors: 李公望; 李孙龙; 郑韩治
Original assignee: SHANGHAI SHENGJIANG MECHANICAL EQUIPMENT CO Ltd
Current assignee: SHANGHAI SHENGJIANG MECHANICAL EQUIPMENT CO Ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-03-18
Anticipated expiration: 2031-10-26

Abstract

The utility model relates to a take vacuum breaker valve of exhaust function relates to the field of vacuum breaker valve, and it includes valve body, valve clack and the actuating mechanism who drives the valve clack motion, sets up the air inlet with valve clack size matched with on the valve body, and actuating mechanism installs on the valve body, still including the exhaust mechanism who is used for discharging the internal air of valve. This application is provided with mutually independent inlet structure and exhaust structure, can control vacuum breaker valve exhaust efficiency respectively and admit air efficiency, can realize the demand of quick exhaust and slowly admitting air simultaneously.

Description

Vacuum breaker valve with exhaust function

Technical Field

The present application relates to the field of vacuum break valves, and more particularly, to a vacuum break valve with an exhaust function.

Background

The vacuum break valve is a safety valve. It is installed above hump of siphon water pipe and can act as quick gate on siphon water outlet pipe. When the main pipeline generates negative pressure and faces the medium backflow risk, the siphon is cut off in time to ensure the safety of the pump valve and the equipment.

Referring to fig. 1, a schematic structural diagram of a vacuum breaker valve includes a valve body 1, a valve flap 2, a valve rod 10, and a driving mechanism 3 for driving the valve flap 2 to operate. The valve body 1 is internally provided with a water cavity 24 connected with a pipeline and an air cavity 25 communicated with the atmosphere, the water cavity 24 is communicated with the air cavity 25 by being provided with two air inlet and outlet ports 21, and the driving mechanism 3 drives the valve clack 2 to open and close the air inlet and outlet ports 21 by driving the valve rod 10 to move axially.

Siphon type conduit can fill water in to the pipeline fast when the initial stage pump water, and the gas in the pipeline can be compressed in the valve body, forms high pressure environment in the valve body, needs discharge the gas in the valve body fast. The vacuum breaker valve of above-mentioned structure discharges the air fast when satisfying initial pump water, and the diameter design of inlet and outlet port is great, and when needs destroy siphon effect, the great inlet and outlet port of size lets in the air fast, and the water level can fall back fast and form the water hammer, leads to the fact the destruction to water pump and other parts.

In view of the above-mentioned related art, the inventor has recognized a need to provide a new type of vacuum break valve that simultaneously satisfies the requirements of rapid venting and pre-water hammer usage.

SUMMERY OF THE UTILITY MODEL

In order to control vacuum breaker valve exhaust rate and air intake rate respectively, the application provides a vacuum breaker valve of function of exhausting in area, has the effect of controlling vacuum breaker valve exhaust efficiency respectively and the efficiency of admitting air, demand that realization that can be convenient was discharged fast and was admitted air slowly.

The application provides a take vacuum breaker valve of exhausting function adopts following technical scheme:

the utility model provides a take vacuum breaker valve of exhausting function, includes valve body, valve clack and drive the actuating mechanism of valve clack motion, seted up on the valve body with valve clack size matched with air inlet, actuating mechanism installs on the valve body, still including being used for discharging the exhaust mechanism of air in the valve body.

By adopting the technical scheme, the valve body is provided with the exhaust mechanism, so that the air in the pipeline can be quickly exhausted by the system when the water pump works, the power output of the water pump is effectively reduced, the energy consumption is reduced, and the cavitation damage of compressed gas to the pipeline can be prevented; meanwhile, an independent air inlet structure is formed by the air inlet, the valve clack and the driving mechanism, the exhaust efficiency of the exhaust mechanism cannot be influenced by changing the size of the air inlet, the air inlet efficiency can be adjusted by adjusting the size of the air inlet according to actual needs, and the phenomenon of water hammer prevention causes damage to equipment.

Optionally, an exhaust port is formed in the side wall of the valve body in a penetrating mode, the exhaust structure comprises an exhaust cover for sealing the exhaust port and an elastic element for pressing the exhaust cover onto the valve body, the exhaust cover is arranged on the outer side of the valve body, and the elastic element is arranged on one side, away from the valve body, of the exhaust cover.

By adopting the technical scheme, the exhaust cover is pressed on the exhaust port through the elastic element, so that the opening pressure of the exhaust cover can be controlled, the sealing effect of the exhaust port in normal work is ensured, and the air leakage condition in the working process is prevented; the exhaust efficiency of the vacuum break valve can be controlled by controlling the size of the exhaust port.

Optionally, the diameter of the air inlet is smaller than the diameter of the air outlet.

By adopting the technical scheme, the design of small air inflow and large air displacement is adopted, and the effects of quick air exhaust and slow air intake can be met.

Optionally, the exhaust mechanism further includes a guide shaft and a guide shaft sleeve fixed on the valve body, the guide shaft is arranged along the axial direction of the exhaust port, the guide shaft is fixed on the exhaust cover, the guide shaft sleeve is arranged on one side of the exhaust cover far away from the valve body, and the guide shaft is slidably inserted in the guide shaft sleeve; the elastic element is a spring, the spring sleeve is arranged on the guide shaft, and two ends of the spring are respectively abutted against the guide shaft sleeve and the exhaust cover.

By adopting the technical scheme, the guide shaft and the guide shaft sleeve are arranged for guiding, so that the exhaust cover can be ensured to be attached to the exhaust port in parallel, and the leakage caused by deflection is prevented; the guide structure can also prevent the exhaust valve from jamming in the opening and closing process; the elastic element selects the spring, can adjust the size of exhaust cover opening and closing force with the utensil in actual use condition, and convenient to use is with low costs.

Optionally, the gas vent is seted up the top of valve body, exhaust mechanism still establishes including detaining first cover body on the gas vent, the through-hole has been seted up on the lateral wall of the first cover body, first dust screen is installed to the through-hole department of the first cover body, the guiding axle the spring with the exhaust lid all is located first cover is internal, the guiding axle sleeve is fixed the top of the first cover body.

By adopting the technical scheme, the exhaust mechanism is arranged at the top of the valve body, and when the exhaust cover is pressed on the valve body, the self weight of the exhaust cover is used as a pressing force, so that the sealing property between the exhaust cover and the valve body is improved, and gas leakage is prevented; the first cover body is arranged, so that the whole exhaust mechanism can be well protected, and equipment damage is prevented; meanwhile, the first cover body can be used for fixing the guide shaft sleeve, so that the guide shaft sleeve is more convenient to mount; through setting up debris among the first dust screen filtering operational environment, when guaranteeing the exhaust function, better protection exhaust mechanism.

Optionally, the guide shaft sleeve penetrates through the side wall of the top of the first cover body, a dust cover is arranged at the top of the guide shaft sleeve, and the dust cover is covered on the guide shaft.

By adopting the technical scheme, the guide shaft sleeve penetrates through the first cover body, and the guide shaft can penetrate through the cover body, so that the height size required by the cover body can be reduced; the dust cover is arranged to effectively prevent the guide structure from falling ash and prevent the jamming phenomenon in the working process.

Optionally, the driving mechanism comprises a valve rod which slides back and forth along the axial direction of the air inlet, and the valve clack is fixed on the valve rod.

Through adopting above-mentioned technical scheme, the valve rod slides along the axis direction of air inlet and sets up, and the axis direction motion of air inlet is followed in step to the valve clack, and pressfitting that the valve clack can be stable is in the position of air inlet, helps improving the leakproofness of valve clack switch, prevents that the working process from taking place gas leakage.

Optionally, a first shaft sleeve in sliding fit with the valve rod is coaxially fixed in the air inlet, a second shaft sleeve is arranged at one end, far away from the first shaft sleeve, of the valve rod, and the second shaft sleeve is fixed on the valve body.

Through adopting above-mentioned technical scheme, the stability of valve rod work can be increased in the setting of first axle sleeve and second axle sleeve, reduces the resistance that the valve rod slided.

Optionally, the driving mechanism further includes an electromagnet and an armature, and the armature is fixed to one end of the valve rod close to the electromagnet.

By adopting the technical scheme, the armature is arranged on the valve rod, and the opening and closing of the valve clack can be effectively controlled when the electromagnet is switched on or off.

In summary, the present application includes at least one of the following beneficial technical effects:

the valve body is simultaneously provided with the air inlet, the valve clack for sealing the air inlet, the driving mechanism for driving the valve clack and the exhaust mechanism for exhausting air in the valve body, the exhaust and intake actions of the vacuum breaker valve are respectively controlled by different mechanisms, and the intake rate and the exhaust rate of the vacuum breaker valve can be independently controlled, so that the harm of the water hammer phenomenon can be reduced by reducing the size of the air inlet, and the exhaust of the exhaust mechanism cannot be interfered;

exhaust mechanism sets up in the top of valve body, and the exhaust lid is detained and is established on the gas vent, and the exhaust lid accessible self gravity seals, improves the leakproofness.

Drawings

FIG. 1 is a schematic diagram of a vacuum break valve according to an embodiment of the present application;

fig. 2 is a schematic overall structure diagram of an embodiment of the present application.

Reference numerals: 1. a valve body; 2. a valve flap; 3. a drive mechanism; 4. an exhaust mechanism; 5. an air inlet; 6. an exhaust port; 7. a second cover body; 8. an electromagnet; 9. an armature; 10. a valve stem; 11. a first bushing; 12. a valve rod fixing seat; 13. an exhaust cover; 14. a first cover body; 15. a guide shaft sleeve; 16. a dust cover; 17. a guide shaft; 18. a spring; 19. a second shaft sleeve; 20. an end cap; 21. an air inlet and outlet; 22. a second dust screen; 23. a first dust screen; 24. a water chamber; 25. an air chamber.

Detailed Description

The present application is described in further detail below with reference to fig. 2.

The embodiment of the application discloses vacuum breaker valve of area exhaust function, refers to fig. 2, including valve body 1, the valve clack 2 of setting in valve body 1, the actuating mechanism 3 of control valve clack 2 action and set up in the exhaust mechanism 4 at valve body 1 top. The valve body 1 is cylindrical, an air inlet 5 matched with the valve clack 2 in size penetrates through the side wall of the valve body 1, and the driving mechanism 3 is installed at the air inlet 5; the top of the valve body 1 is also provided with an exhaust port 6 in a penetrating way, and the exhaust mechanism 4 is arranged at the position of the exhaust port 6.

The drive mechanism 3 includes a second housing 7, an electromagnet 8, an armature 9, and a valve stem 10. The side wall of the second cover body 7 is provided with a through hole communicated with the atmosphere, a second dust screen 22 is arranged on the through hole, and the second cover body 7 is fixed on the valve body 1 through a bolt and is covered with the air inlet 5. The electromagnet 8 is arranged at one end, far away from the valve body 1, in the second cover body 7, the valve rod 10 is arranged in a sliding mode along the axis of the air inlet 5, and the armature 9 is fixed at one end, close to the electromagnet 8, of the valve rod 10.

A valve rod fixing seat 12 matched with the air inlet 5 in size is arranged at the position of the air inlet 5, the valve rod fixing seat 12 comprises an outer ring, an inner ring sleeve coaxially arranged with the outer ring and a connecting rod for connecting the outer ring and the inner ring sleeve, and the outer ring part of the valve rod fixing seat 12 is fixed on the second cover body 7 through a screw; a first shaft sleeve 11 is fixedly inserted in the inner part of the inner ring sleeve, and the valve rod 10 is slidably inserted in the first shaft sleeve 11; an end cover 20 is arranged on the other side of the valve body 1 along the axial direction of the air inlet 5; the middle part of the end cover 20 is provided with a second shaft sleeve 19 which is in sliding fit with the valve rod 10, and one end of the valve rod 10 is inserted in the second shaft sleeve 19 in a sliding way. The valve flap 2 is coaxially fixed to the valve stem 10, and the valve flap 2 is located between the first bushing 11 and the second bushing 19. The electromagnet 8 is electrified, the armature 9 is closed, and the valve rod 10 drives the valve clack 2 to move towards the air inlet 5 to seal the air inlet 5. And a sealing gasket is arranged on the sealing surface of the valve clack 2, so that leakage in the working process is prevented. And a sealing ring is arranged between the second cover body 7 and the valve body 1 to prevent air leakage.

The exhaust mechanism 4 includes a first cover 14, an exhaust cover 13, a guide shaft 17, a guide bush 15, and an elastic member. The first cover body 14 is buckled on the exhaust port 6, the exhaust cover 13, the guide shaft 17, the guide shaft sleeve 15 and the elastic element are all positioned in the first cover body 14, a through hole is formed in the side wall of the first cover body 14, and a first dust screen 23 is installed at the through hole to prevent dust from entering the exhaust mechanism 4; the guide shaft sleeve 15 is arranged along the axial direction of the exhaust port 6, the guide shaft sleeve 15 is fixed at the top of the first cover body 14, the guide shaft sleeve 15 penetrates through the first cover body 14, and the guide shaft 17 is slidably inserted in the guide shaft sleeve 15; the exhaust cover 13 is fixed on one end of the guide shaft 17 close to the exhaust port 6; the elastic element is a spring 18, the spring 18 is sleeved on the guide shaft 17, two ends of the spring 18 are respectively abutted against the guide shaft sleeve 15 and the exhaust cover 13, and the exhaust cover 13 is pressed on the exhaust port 6 through the spring 18; a sealing gasket is arranged on the sealing surface of the exhaust cover 13 to prevent air leakage; the top of the guide shaft sleeve 15 is also provided with a dust cover 16, so that dust can be prevented from entering the guide structure, and jamming can be prevented from occurring in the working process of the exhaust mechanism 4.

The working process of the embodiment of the application is as follows: when the system pumps water, the electromagnet 8 is electrified to attract the armature 9, the valve clack 2 is driven to close the air inlet 5, the water pump starts to pump water, air in the valve body 1 is gradually compressed along with the rise of the water level of the pipeline, when the air pressure exceeds the sum of the pressure of the spring 18 and the gravity of the exhaust cover 13, the exhaust cover 13 is pushed open by the air, and the air is exhausted; when the system stops water delivery, the water pump stops working, the electromagnet 8 is powered off, the siphon effect occurs in the pipeline, the siphon effect can lead to the formation of a negative pressure environment in the valve body 1, the valve clack 2 is sucked away, air enters the pipeline through the air inlet 5, and the siphon effect is damaged.

The embodiment of the application discloses a vacuum break valve of area exhaust function's implementation principle does: the valve body 1 is simultaneously provided with the air inlet 5, the valve clack 2 for sealing the air inlet 5, the driving mechanism 3 for driving the valve clack 2 and the exhaust mechanism 4 for exhausting air in the valve body 1, and the exhaust and air inlet actions of the vacuum breaker valve are respectively controlled by different mechanisms, so that the aim of independently controlling the air inlet rate and the air outlet rate according to requirements under different working conditions is fulfilled.

Referring to fig. 2, in the present embodiment, the exhaust mechanism 4 is installed on the top of the valve body 1, the size of the exhaust cover 13 is close to the diameter size of the valve body 1, when the air pressure in the valve body 1 reaches a set value, the exhaust cover 13 is pushed open, and the air is rapidly exhausted; the number of the air inlets 5 is only one, the size of the air inlets 5 is designed according to the actual required air inlet speed, and when the siphon effect is damaged, the effect of slowing down the air inlet speed is achieved, so that the damage of the water hammer effect to system components is reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a take vacuum breaker valve of exhausting function, includes valve body (1), valve clack (2) and drives actuating mechanism (3) of valve clack (2) motion, seted up on valve body (1) with valve clack (2) size matched with air inlet (5), actuating mechanism (3) are installed on valve body (1), its characterized in that: the valve also comprises an exhaust mechanism (4) used for exhausting air in the valve body (1).

2. The vacuum break valve with air exhaust function according to claim 1, characterized in that: run through on the lateral wall of valve body (1) and seted up gas vent (6), exhaust mechanism (4) are including sealing exhaust lid (13) of gas vent (6) and will exhaust lid (13) compress tightly elastic element on valve body (1), exhaust lid (13) set up the outside of valve body (1), elastic element sets up exhaust lid (13) are kept away from one side of valve body (1).

3. The vacuum break valve with air exhaust function according to claim 2, characterized in that: the diameter of the air inlet (5) is smaller than that of the air outlet (6).

4. The vacuum break valve with air exhaust function according to claim 2, characterized in that: the exhaust mechanism (4) further comprises a guide shaft (17) and a guide shaft sleeve (15) fixed on the valve body (1), the guide shaft (17) is arranged along the axial direction of the exhaust port (6), the guide shaft (17) is fixed on the exhaust cover (13), the guide shaft sleeve (15) is arranged on one side, away from the valve body (1), of the exhaust cover (13), and the guide shaft (17) is inserted into the guide shaft sleeve (15) in a sliding mode; the elastic element is a spring (18), the spring (18) is sleeved on the guide shaft (17), and two ends of the spring (18) are respectively abutted to the guide shaft sleeve (15) and the exhaust cover (13).

5. The vacuum break valve with air exhaust function according to claim 4, wherein: exhaust port (6) are seted up the top of valve body (1), exhaust mechanism (4) are still established including detaining first cover body (14) on exhaust port (6), the through-hole has been seted up on the lateral wall of the first cover body (14), first dust screen (23) are installed to the through-hole department of the first cover body (14), guiding axle (17) spring (18) with exhaust lid (13) all are located in the first cover body (14), guiding axle sleeve (15) are fixed the top of the first cover body (14).

6. The vacuum break valve with air exhaust function according to claim 5, wherein: the guide shaft sleeve (15) penetrates through the side wall of the top of the first cover body (14), a dust cover (16) is arranged at the top of the guide shaft sleeve (15), and the dust cover (16) is covered on the guide shaft (17).

7. The vacuum break valve with air exhaust function according to claim 1, characterized in that: the driving mechanism (3) comprises a valve rod (10) which slides in a reciprocating mode along the axis direction of the air inlet (5), and the valve clack (2) is fixed on the valve rod (10).

8. The vacuum break valve with air exhaust function according to claim 7, wherein: the valve is characterized in that a first shaft sleeve (11) which is in sliding fit with the valve rod (10) is coaxially fixed in the air inlet (5), a second shaft sleeve (19) is arranged at one end, far away from the first shaft sleeve (11), of the valve rod (10), and the second shaft sleeve (19) is fixed on the valve body (1).

9. The vacuum break valve with air exhaust function according to claim 8, wherein: the driving mechanism (3) further comprises an electromagnet (8) and an armature (9), and the armature (9) is fixed at one end, close to the electromagnet (8), of the valve rod (10).