CN2648105Y

CN2648105Y - Disphragm pump for water purifier

Info

Publication number: CN2648105Y
Application number: CN 03202905
Authority: CN
Inventors: 蔡应麟; 徐兆火
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-06
Filing date: 2003-02-11
Publication date: 2004-10-13
Anticipated expiration: 2013-02-11

Abstract

A septum pump used by a water purifier includes a pump head cover 1 which is internally provided with divided high and lower pressure water chambers 2, 3; the pump head cover 1 is provided with an adjustable pressure release device 4 which is a blind hole 5 arranged on the pump head cover 1; an internal wall of the hole is provided with an internal thread; a bottom part of the hole is provided with a hole 6 which is communicated with a high pressure water chamber 2; the hole wall is also provided with a transverse water outlet 7 which is communicated with the exterior of the cover; from the hole bottom to the exterior, a plug sealing rubber pad 8, a pressure release spring 9, an adjusting screw 10, a sealing rubber pad 11 and a blocking screw 12 are sequentially arranged; the adjusting screw 10 and the blocking screw 12 are matched with the internal thread of the blind hole; the position of the transverse water outlet 7 is between the plug sealing rubber pad 8 and the adjusting screw 10. As the water released out of the high pressure chamber directly flows to the outside instead of circularly to the low pressure chamber; therefore, the septum pump can effectively release the pressure no matter how much the water inlet pressure is, and does not affect the normal operation of the motor.

Description

A kind of water purifier diaphragm pump

Affiliated technical field

The utility model relates to a kind of diaphragm pump, especially relates to a kind of water purifier diaphragm pump.

Background technique

At present, water purifier has entered town dweller's huge numbers of families, brought the potable water that makes things convenient for clean hygiene to people, but the fault that water purifier occurs some parts damages sometimes or oneself can not get rid of, the result just must get producer and keep in repair and change parts, the phenomenon that motor burns out appears sometimes as existing water purifier, trace it to its cause, be because due to the structure composition and working principle of water purifier: diaphragm pump is arranged in the water purifier, diaphragm pump includes the pump head lid, separate in the pump head lid high low pressure water cavity is arranged, high, the low pressure water cavity has out, water intake passes to outside the lid, and diaphragm pump is furnished with motor, and the motor rotor high speed rotating drives diaphragm pump and draws water supercharging (owing to will penetrate infiltration (RO) film, so diaphragm pump hyperbaric chamber discharge pressure is higher, reach 70～120Psi), exceed rated working pressure for preventing discharge pressure, existing diaphragm pump covers at pump head all pressure relief device, what adopt is circulation pressure release design, and promptly the direct pressure release of high pressure water in the hyperbaric chamber is in low-pressure cavity.Though this design water only circulates in pump and does not leak, directly pressure release when intake pressure is low, but then can not pressure release when if intake pressure is higher than the working pressure of diaphragm pump, and this situation makes motor load excessive and burn out rotor sometimes, when serious even can cause security incident.

Summary of the invention

The purpose of this utility model, just provide a kind of have no matter intake pressure what, as long as the hyperbaric chamber discharge pressure when exceeding the pressure release working pressure of setting, is all guaranteed the diaphragm pump of can regulate pressure relief device of pressure release effectively.

For achieving the above object, water purifier diaphragm pump of the present utility model, include the pump head lid, in the pump head lid height that separates is arranged, the low pressure water cavity, high, the low pressure water cavity has out, water intake passes to outside the lid, it is characterized in that: covered the can regulate pressure relief device at pump head, described can regulate pressure relief device has a blind hole for covering at pump head, the hole inwall has internal thread, the bottom, hole has the hole and communicates with high-pressure water chamber, on hole wall, also have horizontal water outlet and lead to outside the lid, from the bottom of the hole to outside be followed successively by the chock plug sealing rubber pad, the pressure release spring, adjusting screw, sealing rubber pad and leak stopping screw.

During work, when the hydraulic pressure in the high-pressure water chamber reached the pressure release value of can regulate pressure relief device, hydraulic pressure will overcome the pressure of pressure release spring pushed the chock plug sealing rubber pad open, and high pressure water is from horizontal water outlet outflow release.

The beneficial effects of the utility model are: since the horizontal water outlet of can regulate pressure relief device be directly and lid be interlinked to the outside rather than let out low-pressure cavity, be that back pressure is a barometric pressure, no matter how many intake pressures has, can not influence pressure release, will pressure release arrive outside the lid as long as the hydraulic pressure in the high-pressure water chamber reaches the pressure release value of can regulate pressure relief device, can not influence the normal operation of motor, certainly, let out the outer outside of letting out drinking machine that not necessarily is meant of lid, also let out in the captation in the machine.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the assembling schematic representation of water purifier of the present utility model with diaphragm pump.

Fig. 2 is that water purifier assembles enlarged diagram with electric-motor pump skull in the diaphragm pump.

Embodiment

From Fig. 1 and Fig. 2, can see, water purifier diaphragm pump of the present utility model, include pump head lid 1, in the pump head lid height that separates is arranged, low

pressure water cavity

2,3, high, the low pressure water cavity has, water intake passes to outside the lid, covered can regulate pressure relief device 4 at pump head, it is for having a blind hole 5 on pump head lid 1, the blind hole mouth is processed with counterbore, the hole inwall has internal thread, the bottom, hole has hole 6 and communicates with high-pressure water chamber 2, also having horizontal water outlet 7 on hole wall leads to outside the lid, from at the bottom of the hole to outside be followed successively by chock plug sealing rubber pad 8, pressure release spring 9, adjusting screw 10, sealing rubber pad 11 and leak stopping screw 12, adjusting screw 10 and leak stopping screw 12 cooperate with blind hole internal thread, and laterally water outlet 7 residing positions are between chock plug sealing rubber pad 8 and adjusting screw 10.By twisting the impacting force of 9 pairs of chock plugs 8 of adjusting screw 10 can regulate pressure release springs, also promptly regulate and unload pressure pressure.

Claims

1, a kind of water purifier diaphragm pump, include pump head lid (1), in the pump head lid height that separates is arranged, low pressure water cavity (2,3), high, the low pressure water cavity has, water intake passes to outside the lid, it is characterized in that: on pump head lid (1), can regulate pressure relief device (4) is arranged, described can regulate pressure relief device is for having a blind hole (5) on pump head lid (1), the hole inwall has internal thread, the bottom, hole has hole (6) and communicates with high-pressure water chamber (2), also having horizontal water outlet (7) on hole wall leads to outside the lid, from at the bottom of the hole to outside be followed successively by chock plug sealing rubber pad (8), pressure release spring (9), adjusting screw (10), sealing rubber pad (11) and leak stopping screw (12), adjusting screw (10) and leak stopping screw (12) cooperate with blind hole internal thread, and laterally the residing position of water outlet (7) is between chock plug sealing rubber pad (8) and adjusting screw (10).

2, water purifier diaphragm pump according to claim 1 is characterized in that: described blind hole (5) axle is perpendicular to the pump motor axle.