CN201031789Y

CN201031789Y - Durable type diaphram pump

Info

Publication number: CN201031789Y
Application number: CNU2007200504206U
Authority: CN
Inventors: 王钢华; 黄国成; 王亮
Original assignee: ZHONGSHAN TIANYI ELECTRICAL PRODUCTS CO Ltd
Current assignee: ZHONGSHAN TIANYI ELECTRICAL PRODUCTS CO Ltd
Priority date: 2007-04-17
Filing date: 2007-04-17
Publication date: 2008-03-05
Anticipated expiration: 2017-04-17

Abstract

The utility model provides a durable diaphragm pump, including a pump shell for separating an inlet cavity and an outlet cavity and a valve control component. The valve control component includes a diaphragm plate, an inlet valve, an outlet valve and a valve cover; the inlet valve and the outlet valve respectively include a valve base with a valve hole, a valve spool arranged in the valve base and a reset spring. The utility model is characterized in that all valve spools consist of a seal head made of fluoroplastic composite material which presses and seals the valve hole on the corresponding valve base and a valve rod integrated on the seal head; one end of the reset spring is jacketed on the valve rod and the other end is arranged on the inner top surface of the valve cover or other blocking components. With the valve spool structure consisting of a seal head and a valve rod made of fluoroplastic composite material as integration, the utility model skillfully makes use of the characteristics of the fluoroplastic composite material; therefore, the utility model has the advantages of reliable sealing between the valve spool and the valve base, strong pressure and corrosion resistance, less mechanical wear and tear and long service life of the valve spool.

Description

A kind of durable type diaphragm pump

Technical field

The utility model relates to a kind of pump housing field, the durable type diaphragm pump that particularly a kind of power spraye is used.

Background technique

The diaphragm pump that existing power spraye is used, it is mostly by the admission chamber that is provided with separation in it with go out the pump case of sap cavity and be used for that described feed liquor intracavity liquid is delivered to out valve control assembly in the sap cavity etc. to form, and the valve sealing structure in its valve control device mostly for sealing gland type or seal ring type (promptly on the valve rod in valve seat the device seal ring or around the valve opening of valve seat, set can with the ring structure of valve rod fitted seal).The shortcoming of sealing gland type structure is not withstand voltage, not corrosion-resistant, the easy obstruction of spool; The shortcoming of seal ring type structure be between spool and the valve seat wearing and tearing greatly, easily stuck, be to make because of its valve core seal ring simultaneously by General Purpose Rubber and improvement rubber, so the not anti-dimethylbenzene of seal ring, the contour machine solution corrosion that is impregnated with of kerosene, spool corrosion-resistant, working life lack, and valve core structure complexity, process loaded down with trivial detailsly, add mould and die accuracy and do not reach and require and make valve body cause phenomenons such as leaking or do not absorb water in use for some time easily, so be difficult to be accepted by consumers in general.At these situations, adopt by valve rod and be coated at the valve core structure that the rubber sealing boot on the valve rod is formed by the people, although the spool of this structure has been strengthened the withstand voltage corrosion resistance of spool to a certain extent and reduced wearing and tearing between spool and the valve seat, it still exists complex structure, processing and problems such as loaded down with trivial details is installed.

Summary of the invention

The purpose of this utility model is at above-mentioned existing problems and deficiency, provides that a kind of spool is withstand voltage, corrosion resistance is strong, mechanical wear is few, long service life, and reliable, simple in structure with valve base sealing, process and install easy durable type diaphragm pump.

The technical solution of the utility model is achieved in that

Durable type diaphragm pump described in the utility model, comprise and be provided with the pump case of separating admission chamber and going out sap cavity in it, be used for described feed liquor intracavity liquid is delivered to out valve control assembly in the sap cavity, described valve control assembly comprise be installed on the described pump case and can and be installed on feed liquor valve on the described diaphragm at the diaphragm that resiliently deformable takes place under the effect of drive unit, liquid valve, valve gap, wherein, described feed liquor valve and liquid valve comprise that respectively bottom center has the valve seat of valve opening and is installed on the interior spool that valve opening can be sealed of described valve seat, Returnning spring, described each valve opening is respectively with corresponding admission chamber or go out sap cavity and be communicated with, be characterized in that described each spool all is the sealing head of the valve opening pressing of its respective valve seat sealing and the valve rod that is shaped on the sealing head can being formed of being made by the fluorine plastic composite materials, one end of described Returnning spring is coated on the described valve rod, and its other end overhead is on described valve gap inner top surface or other stop member.

Wherein, the concrete shape of above-mentioned spool can be according to using the needs setting, can be as above-mentioned spool for forming the spool that the cross section is T-shape with valve rod by cylindrical or quad seal head, and be the sealing reliability of enhanced leaktightness head and valve seat, above-mentioned sealing head is an arc surface corresponding to the sealing surface of above-mentioned valve seat inner bottom surface; Also can serve as reasons sphere or hemisphere sealing head and valve rod of above-mentioned spool forms or the like.Preferred version of the present utility model is that sealing surface is the T-valve core of arc surface.

More convenient for the utility model is used, the upper/lower terminal of above-mentioned pump case is respectively equipped with valve control device.

The utility model is owing to adopt the valve core structure of being made up of integrated sealing head of fluorine plastic composite materials and valve rod, utilized withstand voltage that fluorine plastic composite materials itself had dexterously, corrosion-resistant, anti-mechanical wear and good springiness, process characteristics such as simple and easy, make the utility model in the process of using, not only can make the sealing of spool and valve seat reliable, and spool is withstand voltage, corrosion resistance is strong, mechanical wear is few, long service life, and it is simple in structure, processing and installation are extremely simple and easy, cost of production is low, and the spool that has solved effectively in the existing diaphragm pump is not withstand voltage, not corrosion-resistant, short and processing in working life and problems such as loaded down with trivial details are installed.And, further strengthened the reliability of its sealing because the utility model employing sealing surface is the sealing head structure of arc surface.Because the utility model adopts the structure that is respectively equipped with valve control device at the upper/lower terminal of pump case, further made things convenient for its use simultaneously.The utility model is simple in structure, reliable, long service life, can be widely used in various sprinkling irrigations field, is particularly useful on the various power sprayes.

Below in conjunction with accompanying drawing the utility model is further described.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is Fig. 1 one embodiment's an A-A sectional structure schematic representation;

Fig. 3 is the assembly structure schematic representation of Fig. 2;

Fig. 4 is another embodiment's of Fig. 1 an A-A sectional structure schematic representation.

Embodiment

As Fig. 1-shown in Figure 4, durable type diaphragm pump described in the utility model, comprise the pump case 1 that is provided with admission chamber 12 in it and goes out sap cavity 13, be used for liquid in the described admission chamber 12 are delivered to out valve control assembly 2 in the sap cavity 13, described valve control assembly 2 comprise be installed on the described pump case 1 and can and be installed on feed liquor valve 22 on the described diaphragm 21 at the diaphragm 21 that resiliently deformable takes place under the effect of drive unit, liquid valve 23, valve gap 24, wherein, described feed liquor valve 22 and liquid valve 23 comprise that respectively intracavity bottom central authorities have valve opening 224,234 valve seat 221,231 and be installed on each valve seat 221, in 231 can be with corresponding valve opening 224, the spool 222 of 234 sealings, 232, Returnning spring 223,233, and form a pressure balance chamber 11 between described valve gap 24 and the diaphragm 21, described each valve opening 224,234 can be respectively with corresponding admission chamber 12 or go out sap cavity 13 and pressure balance chamber 11 is communicated with, for making the spool 222 in the utility model, 232 is withstand voltage, corrosion resistance is strong, described each spool 222,232 all can be with its respective valve seat 221 for what made by the fluorine plastic composite materials, 231 valve opening 222, the sealing head 2221 of 232 pressings sealing, 2 321 and be shaped in sealing 2221, valve rod 2222 on 2321,2322 form, described Returnning spring 223, an end of 233 is coated at described valve rod 2222, on 2322, its the other end overhead is on described valve gap 24 inner top surfaces or other stop member, thereby utilized withstand voltage that fluorine plastic composite materials (abbreviation compound body) itself had dexterously, corrosion-resistant, anti-mechanical wear and good springiness, process characteristics such as simple and easy, make the utility model in the process of using, spool 222,232 had both made immersion for a long time in the agricultural chemicals of 100% stoste, still keep the apparent and physical property of former element, and in the working medium of ratio allotment, there were not wearing and tearing in 800 hours, so spool 222 with 3000 times/minute continuous foldings of folding frequency, 232 withstand voltage, corrosion resistance is strong, mechanical wear is few, long service life.And when closing pressure, spool 222,232 are bearing under the pressure of 0.45Mpa, the slight elasticity distortion that produces the License Value scope seals, no longer include the tendency of material distortion and position distortion after the sealing, can in time reply normally after cancelling pressure, spool 222,232 with valve seat 221,231 sealing is reliable, and it is simple in structure, processing and installation are extremely simple and easy, cost of production is low, has solved the employing General Purpose Rubber in the existing diaphragm pump effectively and has improved the not anti-dimethylbenzene of valve core seal ring that rubber is made, kerosene is contour to be impregnated with the machine solution corrosion and spool is not withstand voltage, working life is short, process and install problems such as loaded down with trivial details.Wherein, the concrete shape of above-mentioned spool 222,232 can be according to using the needs setting, as shown in Figure 2, above-mentioned spool 222,232 can be for forming the spool that the cross section is T-shape by cylindrical or

quad seal

2221,2321 with

valve rod

2222,2322, and be the sealing reliability of enhanced

leaktightness head

2221,2321 and valve seat 221,231, above-mentioned

sealing head

2221,2321 is an arc surface corresponding to the sealing surface around the valve opening of above-mentioned valve seat 221,231; As shown in Figure 4, also can serve as reasons sphere or

hemisphere sealing head

2221,2321 and

valve rod

2222,2322 of above-mentioned spool 222,232 forms or the like.Preferred version of the present utility model is that sealing surface is the T-valve core of arc surface, spool 222,232 because of this novel T type circular arch arc design, the ingenious long-pending and degree of adaptability of best product surface that obtains, reasonably the structure of density and science guarantees to produce the handy safety that assembling is accurately stable and finished product uses.For further making the utility model easy to use, the upper/lower terminal of above-mentioned pump case 1 is respectively equipped with valve control device 2, and above-mentionedly go out between two spools 232, to be provided with in the sap cavity 13 middle part with the protruding stop member 3 of spacing card, the other end of the Returnning spring 233 in above-mentioned each liquid valve 23 is connected on the two end part of described stop member 3, and the other end of the Returnning spring 223 in above-mentioned each feed liquor valve 22 is connected on its corresponding valve gap 24 inner top surfaces.As shown in Figure 2, on the above-mentioned pump case 1, the corresponding above-mentioned admission chamber 12 in following two ends is respectively equipped with the mounting hole with spacing shoulder that is used to install above-mentioned diaphragm 21 with the position that goes out sap cavity 13, correspondingly be provided with the mounting hole 211 on ring limit 212 in the band on the above-mentioned diaphragm 21, and above-mentioned feed liquor valve seat 221 and fluid valve seat 231 are respectively outer wall and are provided with and can cooperate the locating button limit 225 that buckles with the interior ring limit 212 in described each mounting hole 211,235 goblet, wherein, the button limit of above-mentioned feed liquor valve seat 221 is positioned at its glass opening, the button limit of above-mentioned fluid valve seat 231 is positioned at its glass bottom, above-mentioned feed liquor valve seat 221 is opening and is connected on the mounting hole towards valve gap 24 directions ground by buckling cooperating of ring limits in its opening button limit 225 and the corresponding mounting hole 211, and above-mentioned fluid valve seat 232 is opening court and is connected on the mounting hole with going out sap cavity 13 directions by encircling in its button limit 235, bottom and the corresponding mounting hole 211 to buckle cooperating of limits 212.The utility model is simple in structure, reliable, durable in use, can be widely used in the various sprinkling irrigations field, especially is applicable on the power spraye.

Following structure accompanying drawing is described in further detail working principle of the present utility model:

When initial, water inlet spool 222, water outlet spool 232 all are in the state with valve opening 224,234 closures under the effect of each Returnning spring 223,233 spring force.Now the last valve control device 2 with this diaphragm pump is the example explanation, when diaphragm 21 is pullled downwards under the effect of drive unit (motor) and resiliently deformable is taken place, because the gap between valve gap 24 and the diaphragm 21 increases, the space that is pressure balance chamber 11 increases, thereby it is littler than influent side to make this pressure balance chamber 11 form hydraulic pressure (or air pressure), forms suction.Suction at first acts on movable water inlet spool 222 and the water outlet spool 232, but because water outlet spool 232 has stopping of water outlet valve seat 231, so fit closelyr with water outlet valve seat 231.Therefore and water inlet spool 222 does not stop, overcomes the elastic force effect of Returnning spring 223 under the effect of hydraulic pressure (or air pressure) and opens into water spool 222, and water (or air) flows into the pressure balance chamber 11 between diaphragm 21 and the valve gap 24.Hydraulic pressure (or air pressure) in this pressure balance chamber 11 is identical with the hydraulic pressure (or air pressure) of water-inlet cavity 12, and the spool 222 of intaking this moment is closed again under the effect of Returnning spring 223.And then make upwards extruding of diaphragm 21 by drive unit, form hydraulic pressure (or air pressure).Pressure at first acts on movable water inlet spool 222 and the water outlet spool 232, but because water inlet spool 222 has stopping of inlet valve seat 221, so fit closelyr with inlet valve seat 221.And water outlet spool 232 does not stop, overcomes the thrust of water outlet valve core spring 233 under the effect of hydraulic pressure (or air pressure), opens water outlet spool 232, and water (or air) is discharged to water chamber 13.Hydraulic pressure in pressure balance chamber 11 (or air pressure) is identical with hydraulic pressure in the water chamber 13, and water outlet spool 232 is just closed again under the pressure effect that reaches water chamber 13 under the effect of Returnning spring 233.And then make diaphragm 21 that resiliently deformables take place downwards by drive unit to repeat aforesaid operations, so circulation is carried out and is made the source, water source of water-inlet cavity 12 constantly deliver to water chamber 13 outputs in the mode of higher hydraulic pressure.The working principle of the following valve control device 2 of above-mentioned diaphragm pump is similar substantially to last valve control device 2, and just the direction of displacement of its each assembly is opposite.

Claims

1. durable type diaphragm pump, comprise and be provided with the pump case (1) of separating admission chamber (12) and going out sap cavity (13) in it, be used for the interior liquid of described admission chamber (12) is delivered to out the interior valve control assembly (2) of sap cavity (13), described valve control assembly (2) comprise be installed on the described pump case (1) and can and be installed on feed liquor valve (22) on the described diaphragm (21) at the diaphragm (21) that resiliently deformable takes place under the effect of drive unit, liquid valve (23), valve gap (24), wherein, described feed liquor valve (22) and liquid valve (23) comprise band valve opening (224 respectively, 234) valve seat (221,231) and be installed on each valve seat (221,231) in can be with corresponding valve opening (224,234) Mi Feng spool (222,232), Returnning spring (223,233), and form a pressure balance chamber (11) between described valve gap (24) and the diaphragm (21), described each valve opening (224,234) can be respectively with corresponding admission chamber (12) or go out sap cavity (13) and pressure balance chamber (11) is communicated with, it is characterized in that described each spool (222,232) all can be with its respective valve seat (221 for what make by the fluorine plastic composite materials, 231) valve opening (222,232) Mi Feng sealing head (2221,2321) and be shaped in sealing head (2221,2321) valve rod (2222 on, 2322) form, described Returnning spring (223,233) a end is coated at described valve rod (2222,2322) on, its other end overhead is on described valve gap (24) inner top surface or other stop member.

2. diaphragm pump according to claim 1, the valve opening (222,232) that it is characterized in that above-mentioned each valve seat (221,231) is the plane with the matching trim of spool (222,232) on every side, above-mentioned sealing head (2221,2321) is cylindrical or square, and sealing head (2221,2321) forms the spool that the cross section is T-shape with valve rod (2222,2322).

3. diaphragm pump according to claim 2 is characterized in that above-mentioned each sealing head (2221,2321) is an arc surface corresponding to the sealing surface of above-mentioned valve seat (221,231) valve opening (224,234) direction.

4. diaphragm pump according to claim 1 is characterized in that above-mentioned sealing head (2221,2321) is spheroid or half sphere shape.

5. diaphragm pump according to claim 1, the upper/lower terminal that it is characterized in that above-mentioned pump case (1) is respectively equipped with valve control device (2), and above-mentioned go out to be positioned in the sap cavity (13) be provided with the middle part between the two fluid spools (232) with the protruding stop member of spacing card (3), the other end of the Returnning spring (233) on above-mentioned each fluid spool (232) is connected on the two end part of described stop member (3), and the other end of the Returnning spring (223) on above-mentioned each feed liquor spool (222) is connected on its corresponding valve gap (24) inner top surface.

6. diaphragm pump according to claim 5, it is characterized in that above-mentioned pump case (1) on, corresponding above-mentioned admission chamber (12) in following two ends and the position that goes out sap cavity (13) are respectively equipped with the mounting hole with spacing shoulder that is used to install above-mentioned diaphragm (21), correspondingly be provided with on above-mentioned each diaphragm (21) and can supply valve seat (221,231) mounting hole (211) on ring limit (212) in the band of adapting device, and above-mentioned feed liquor valve seat (221) and fluid valve seat (231) are respectively outer wall and are provided with and can cooperate the locating button limit (225 that buckles with the interior ring limit (212) on described each diaphragm (21), 235) goblet, above-mentioned feed liquor valve seat (221) is opening and is connected on the mounting hole towards valve gap (24) direction ground by buckling cooperating of ring limit in its button limit (225) and the corresponding mounting hole (211), above-mentioned fluid valve seat (232) by its button limit (235) and the corresponding mounting hole (211) interior encircle to buckle cooperating of limit (212) be opening court and be connected on the mounting hole with going out sap cavity (13) direction.