CN204664500U - Structure improved safety check - Google Patents

Structure improved safety check Download PDF

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Publication number
CN204664500U
CN204664500U CN201520287570.3U CN201520287570U CN204664500U CN 204664500 U CN204664500 U CN 204664500U CN 201520287570 U CN201520287570 U CN 201520287570U CN 204664500 U CN204664500 U CN 204664500U
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CN
China
Prior art keywords
valve assembly
valve
check valve
check
intake tunnel
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CN201520287570.3U
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Chinese (zh)
Inventor
陈荣国
颜正辉
陈志平
陈海林
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ZHEJIANG SINCONTROL PUMP INDUSTRY Co Ltd
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ZHEJIANG SINCONTROL PUMP INDUSTRY Co Ltd
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Priority to CN201520287570.3U priority Critical patent/CN204664500U/en
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Abstract

The utility model relates to a kind of structure improved safety check, comprise the valve seat (1) with intake tunnel (11), the check valve assembly only allowing current to flow towards a direction is provided with in the intake tunnel (11) of valve seat, it is characterized in that: described check valve assembly has many groups, be arranged in the intake tunnel (11) of described valve seat from bottom to top step by step, each group check valve assembly all only allows current to flow towards same direction.When one of them check valve assembly is put by impurity, other check valve assembly also plays a role, and this safety check has multiple protection functions, and the possibility that each check valve assembly is shelved by impurity is simultaneously very low, therefore uses the water pump of this safety check safer.

Description

Structure improved safety check
Technical field
The utility model relates to a kind of safety check, and this safety check is particularly suitable in all kinds of water pump.
Background technique
Safety check refers to and relies on medium flowing itself and automatic open and close flap, is used for the valve preventing medium from flowing backwards, also known as check valve, one-way valve, reflux valve and back pressure valve.Safety check belongs to a kind of automatic valve, and its Main Function prevents medium from flowing backwards, prevents pump and drive motor reversion, and the releasing of vessel media.
The safety check used in existing water pump, generally be arranged in water intake, its structure comprises the valve seat having valve port, be located in the valve rod of the also upper and lower slippage of energy on valve seat, one end of valve rod is connected with the valve block in order to shutoff valve port, valve block is positioned at the below of valve seat, valve rod is also arranged with and makes valve rod keep moving to make valve block block the spring of valve port trend.When having current normal through water intake, the impulse force meeting ejection valve block of current, valve block and valve rod can overcome the elastic force of spring, towards the direction slippage of opening valve port, now valve port is opened, current enter in pump case by valve port, finally flow out, when motor no longer works from the outlet of pump case, current no longer flow into from water intake, valve rod can under the action of the spring, and band moving valve plate blocks valve port direction and moves, and prevents current from flowing backwards.
It only has an one-way cock structure with this safety check, water pump operationally, because of under a lot of environment, water pump draws up the water come, it is with a lot of impurity, if having impurity buildups in the keying position of valve, whole one-way cock will be caused to fit badly, at this moment whole one-way cock does not just have closing function, and the water in the pump housing can flow backwards from check-valve port and damage impeller and motor.Safety check is when valve port is opened in addition, and be complete opening state, valve port place does not block, and operationally, some harder impurity, as finger stone can enter the impeller that can collide motor in pump case with current via safety check, serious meeting makes impeller failure to water pump.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of structure improved safety check with multiple-protection function for above-mentioned prior art present situation.
The utility model solves the problems of the technologies described above adopted technological scheme: a kind of structure improved safety check, comprise the valve seat with intake tunnel, the check valve assembly only allowing current to flow towards a direction is provided with in the intake tunnel of valve seat, it is characterized in that: described check valve assembly has many groups, be arranged on step by step from bottom to top in the intake tunnel of described valve seat, each group check valve assembly all only allows current to flow towards same direction.
Above-mentioned check valve assembly has two groups, be respectively the first check valve assembly and the second check valve assembly, first check valve assembly is located at the below of the second check valve assembly, current flow out from intake tunnel opposite side via after the first check valve assembly, the second check valve assembly successively from intake tunnel one side inflow, wherein the first check valve assembly is lift-type check valve assembly, and the second check valve assembly is Swing check valve assembly.Above check valve assembly be chosen as better rotation mode.Certainly other also can be adopted to select compound mode, and namely each check valve assembly is lift-type check valve assembly, Swing check valve assembly or butterfly check valve assembly combination in any.
Above-mentioned first check valve assembly comprises the pedestal with lower valve port, pedestal is fixed on the lower end mouth place of intake tunnel, the bottom of intake tunnel is communicated with the external world by lower valve port, lower valve port is equipped with the valve rod of the upper and lower slippage of energy, the end being positioned at the valve rod above pedestal is connected with the valve block assembly in order to shutoff lower valve port, is positioned at the valve rod below pedestal is arranged with to make valve rod keep moving down to make valve block assembly block the spring of lower valve port trend.It is a kind of concrete Lift check valve modular construction.
Said base is fixed with the filter screen covered by lower valve port.It arranges filter screen at lower valve port place, effectively prevents impurity by lower valve port, prevents larger impurity from entering the pump housing interior to damage impeller, uses the water pump of this safety check safer.
The lower end surface of said base has inner fovea part, and lower valve port is through the bottom surface of inner fovea part, and described filter screen is shelved and is compressed on the end face of inner fovea part by described spring.Inner fovea part has certain effect of contraction to filter screen, prevent filter screen from offseting, filter screen is suppressed by spring simultaneously, and when current pass through, filter screen and valve seat are firmly fixed by the pressure energy of the additional spring of impulse force of current, when not having current to pass through, utilize the elastic force of spring itself filter screen and valve seat to be fixed also enough, it utilizes the parts of safety check own to be fixed filter screen, without the need to additionally filter screen and valve seat being fixed, structure is more simple, and layout is more reasonable.Certain filter screen also can be fixed in lower valve port, and this just needs supernumerary structure filter screen and valve port to be fixed, as welding.
Above-mentioned valve block assembly comprises the sealing gasket that fixed tray and flexible material are made, and described fixed tray and valve rod are fixed, and sealing gasket is fixed on fixed tray; Fixed tray is that hard material is made, and moves by being easily with ovable valve stem after water impact.Described sealing gasket is plate-like, and the periphery of sealing gasket has extended annular wall downwards, and sealing gasket is fitted on fixed tray, and described annular wall is coated on fixed tray periphery.Sealing gasket is covered with whole fixed tray, and valve block assembly can be made better to block valve port.
Above-mentioned second check valve assembly comprises the valve gap rotating and be arranged on valve seat top, and valve gap coordinates with the upper end open of the intake tunnel of valve seat, and valve gap relies on the torsion spring conducting oneself with dignity or be located at valve gap and valve seat to keep pressing down the upper end open trend of covering intake tunnel.It is a kind of concrete Swing check valve assembly, and this check valve assembly structure opposed configuration is simple.The lower end of above-mentioned valve gap is provided with the sealing gasket coordinated with the upper end open of intake tunnel.
Compared with prior art; the utility model has the advantage of: in the intake tunnel of valve seat, be provided with the many groups check valve assembly arranged step by step from bottom to top; and each group check valve assembly all only allows current to flow towards same direction; therefore when one of them check valve assembly is put by impurity; other check valve assembly also plays a role; this safety check has multiple protection functions, and the possibility that each check valve assembly is shelved by impurity is simultaneously very low, therefore uses the water pump of this safety check safer.
Accompanying drawing explanation
Fig. 1 is the perspective view (valve port closed condition) of the utility model preferred embodiment;
Fig. 2 is the sectional view (valve port closed condition) of the utility model preferred embodiment;
Fig. 3 is the stereochemical structure exploded view of the first check valve assembly in the utility model preferred embodiment;
Fig. 4 is the structural representation of the utility model second embodiment;
Fig. 5 is the structural representation of the utility model the 3rd embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Figures 1 to 3, be a preferred embodiment of the present utility model.
A kind of structure improved safety check, comprise the valve seat 1 with intake tunnel 11, the check valve assembly only allowing current to flow towards a direction is provided with in the intake tunnel 11 of valve seat, check valve assembly has many groups, be arranged on step by step from bottom to top in the intake tunnel 11 of valve seat, each group check valve assembly all only allows current to flow towards same direction.
Check valve assembly in the present embodiment has two groups, certainly also three groups can be had, be respectively the first check valve assembly and the second check valve assembly, first check valve assembly is located at the below of the second check valve assembly, current flow out from intake tunnel opposite side via after the first check valve assembly, the second check valve assembly successively from intake tunnel one side inflow, wherein the first check valve assembly is lift-type check valve assembly, and the second check valve assembly is Swing check valve assembly.
First check valve assembly comprises the pedestal 2 with lower valve port 21, pedestal 2 is fixed on the lower end mouth place of intake tunnel 11, the bottom of intake tunnel 11 is communicated with the external world by lower valve port 21, lower valve port 21 is equipped with the valve rod 3 of the upper and lower slippage of energy, the many connecting tendons 211 intersected are provided with in lower valve port 21, valve rod 3 activity is through the infall of each connecting tendon 211, the end being positioned at the valve rod 3 above pedestal 2 is connected with the valve block assembly in order to shutoff lower valve port 21, being positioned at the valve rod 2 below pedestal 2 is arranged with makes valve rod 2 keep moving down to make valve block assembly block the spring 4 of lower valve port 11 trend.
Pedestal 2 is fixed with the filter screen 5 covered by lower valve port 21.The lower end surface of pedestal 2 has inner fovea part 22, and lower valve port 21 is through the bottom surface of inner fovea part 22, and filter screen 5 is shelved and is compressed on the end face of inner fovea part 22 by spring 4.The upper end of valve rod 3 has annular shoulder block 31, and the lower end of spring 4 is supported on annular shoulder block 31.Valve block assembly comprises the sealing gasket 6 that fixed tray 5 and flexible material are made, and fixed tray 5 is fixed with valve rod 3, and sealing gasket 6 is fixed on fixed tray 5; Sealing gasket 6 is in plate-like, and the periphery of sealing gasket 6 has extended annular wall 61 downwards, and sealing gasket 6 is fitted on fixed tray 5, and annular wall 61 is coated on fixed tray 5 periphery.
Second check valve assembly comprises the valve gap 7 rotating and be arranged on valve seat 1 top, valve gap 7 coordinates with the upper end open of the intake tunnel 11 of valve seat 1, and valve gap 7 relies on deadweight or is located at valve gap 7 and keeps pressing down the upper end open trend of covering intake tunnel 11 with the torsion spring 8 of valve seat 1.The lower end of valve gap 7 is provided with the sealing gasket 9 coordinated with the upper end open of intake tunnel 11.
Each check valve assembly is lift-type check valve assembly, Swing check valve assembly or butterfly check valve assembly combination in any.Certainly also can have two groups, three groups or many groups, each check valve assembly is lift-type check valve assembly, as shown in Figure 4, also can be Swing check valve assembly, as shown in Figure 5.
Although more than describe in detail the preferred embodiments of the present invention, should be expressly understood that, for a person skilled in the art, the present invention can have various modifications and variations.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (9)

1. a structure improved safety check, comprise the valve seat (1) with intake tunnel (11), the check valve assembly only allowing current to flow towards a direction is provided with in the intake tunnel (11) of valve seat, it is characterized in that: described check valve assembly has many groups, be arranged in the intake tunnel (11) of described valve seat from bottom to top step by step, each group check valve assembly all only allows current to flow towards same direction.
2. structure improved safety check according to claim 1, it is characterized in that: described check valve assembly has two groups, be respectively the first check valve assembly and the second check valve assembly, first check valve assembly is located at the below of the second check valve assembly, current flow out from intake tunnel opposite side via after the first check valve assembly, the second check valve assembly successively from intake tunnel one side inflow, wherein the first check valve assembly is lift-type check valve assembly, and the second check valve assembly is Swing check valve assembly.
3. structure improved safety check according to claim 2, it is characterized in that: described first check valve assembly comprises the pedestal (2) with lower valve port (21), pedestal (2) is fixed on the lower end mouth place of intake tunnel (11), the bottom of intake tunnel (11) is communicated with the external world by lower valve port (21), lower valve port (21) is equipped with the valve rod (3) of the upper and lower slippage of energy, the end of valve rod (3) being positioned at pedestal (2) top is connected with the valve block assembly in order to shutoff lower valve port (21), be positioned at pedestal (2) below valve rod (2) on be arranged with make valve rod (2) keep move down to make valve block assembly block the spring (4) of lower valve port (11) trend.
4. structure improved safety check according to claim 3, is characterized in that: described pedestal (2) is fixed with the filter screen (5) covered by lower valve port (21).
5. structure improved safety check according to claim 4, it is characterized in that: the lower end surface of described pedestal (2) has inner fovea part (22), lower valve port (21) is through the bottom surface of inner fovea part (22), and described filter screen (5) is shelved and is compressed on the end face of inner fovea part (22) by described spring (4).
6. structure improved safety check according to claim 3, it is characterized in that: described valve block assembly comprises the sealing gasket (6) that fixed tray (5) and flexible material are made, described fixed tray (5) is fixed with valve rod (3), and sealing gasket (6) is fixed on fixed tray (5); Described sealing gasket (6) is in plate-like, the periphery of sealing gasket (6) has extended annular wall (61) downwards, sealing gasket (6) is fitted on fixed tray (5), and described annular wall (61) is coated on fixed tray (5) periphery.
7. according to the arbitrary described structure improved safety check of claim 2 ~ 6, it is characterized in that: described second check valve assembly comprises the valve gap (7) that rotation is arranged on valve seat (1) top, valve gap (7) coordinates with the upper end open of the intake tunnel (11) of valve seat (1), and valve gap (7) relies on deadweight or is located at valve gap (7) and keeps pressing down the upper end open trend of covering intake tunnel (11) with the torsion spring (8) of valve seat (1).
8. structure improved safety check according to claim 7, is characterized in that: the lower end of described valve gap (7) is provided with the sealing gasket (9) coordinated with the upper end open of intake tunnel (11).
9. structure improved safety check according to claim 1, is characterized in that: described each check valve assembly is lift-type check valve assembly, Swing check valve assembly or butterfly check valve assembly combination in any.
CN201520287570.3U 2015-05-06 2015-05-06 Structure improved safety check Active CN204664500U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520287570.3U CN204664500U (en) 2015-05-06 2015-05-06 Structure improved safety check

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520287570.3U CN204664500U (en) 2015-05-06 2015-05-06 Structure improved safety check

Publications (1)

Publication Number Publication Date
CN204664500U true CN204664500U (en) 2015-09-23

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CN201520287570.3U Active CN204664500U (en) 2015-05-06 2015-05-06 Structure improved safety check

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020237786A1 (en) * 2019-05-31 2020-12-03 苏州优德通力科技有限公司 Elastic check valve
CN116838588A (en) * 2023-06-25 2023-10-03 浙江美罗机电有限公司 Pressure controller for water pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020237786A1 (en) * 2019-05-31 2020-12-03 苏州优德通力科技有限公司 Elastic check valve
CN116838588A (en) * 2023-06-25 2023-10-03 浙江美罗机电有限公司 Pressure controller for water pump
CN116838588B (en) * 2023-06-25 2024-02-06 浙江美罗机电有限公司 Pressure controller for water pump

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