CN2196877Y

CN2196877Y - Sprayer

Info

Publication number: CN2196877Y
Application number: CN 94205366
Authority: CN
Inventors: 朱怀富
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-03-24
Filing date: 1994-03-24
Publication date: 1995-05-17
Anticipated expiration: 2004-03-24

Abstract

The utility model relates to a sprayer. The utility model is characterized in that the outer side of a piston rod (7) is sheathed with an anti-seepage device (9) which is composed of a hollow cylinder (9a) and a sleeve body (9b). The center part of the bottom surface of the sleeve body (9b) is provided with a through hole (9c). The outer diameter of the cylinder (9a) and the outer diameter of a pump barrel (10) are same, and the upper side of the cylinder (9a) is provided with an outer screw. The bottom end face of the anti-seepage device (9) is clamped between a cushion ring (7a) and a piston (7b), and the bottom end face of the anti-seepage device, the cushion ring (7a), and the piston (7b) are compacted at the lower end of the piston rod (7) through nuts (7c). The upper part of the anti-seepage device (9) is folded and fixed on the top end face of the pump barrel (10) through the screw connection among the bottom face of the cylinder (9a), the cylinder (9a), and the cover (8) of the pump barrel. The utility model has the advantages of no air leak, no liquid seepage, and safe and convenient use.

Description

Sprayer

The utility model relates to a kind of plant protection mechanism, particularly relates to a kind of knapsack hand sprayer.

Use one of more manual sprayer in China rural area at present, it is 3WB-16 type knapsack sprayer, though this spray structure is simple, the chemoproection that can be plant provides certain convenience, but its security performance is relatively poor, and in use exist following defective all the time: 1. soup is easily taken the pump barrel top out of with stopper rod; 2. when bending over to operate sprayer, soup is easily from the outside seepage of the loam cake of cartridge; 3. sprayer is the non-tight structure, and the gas molecule of soup is easy to outside effusion.Because the existence of above-mentioned defective makes medicinal herb grower user be subjected to the hardship of soup (gas) the infringement human body deeply, the pesticide poisoning incident that causes therefrom happens occasionally, and numerous medicinal herb growers user is worried deeply.

The purpose of this utility model is to overcome the above-mentioned defective of prior art, and a kind of sprayer is provided, and this sprayer does not have the characteristics that can outwards leak gas, seep water, uses promptly convenient safety again.

The purpose of this utility model is achieved through the following technical solutions:

A kind of sprayer provided by the utility model, it is by cartridge (1), pump barrel (10), air chamber (11) and injecting-unit compositions such as (12), be equipped with in the pump barrel (10) and be with externally threaded stopper rod (7) on the bottom body of rod, pump barrel lid (8) is housed on the stopper rod (7) successively, packing ring (7a), piston (7b), nut (7c), be provided with internal thread in the pump barrel lid (8), be provided with two return-air holes (10b) symmetrically on the cylindrical shell on pump barrel (10) top, pump barrel (10) cylindrical shell that is positioned at return-air hole (10b) top is provided with external screw thread, internal thread in this external screw thread and the pump barrel lid (8) is complementary, it is characterized in that: go back suit one anti-seepage machine (9) outside the stopper rod (7) in pump barrel (10), anti-seepage machine (9) is the hollow body (9b) that is the test tube shape that circular hollow cylinder (9a) and bottom adopts elastomeric material to make by top and is formed by connecting, and the bottom center at hollow body (9b) also has a through hole (9c), the external diameter of the external diameter of hollow cylinder (9a) and pump barrel (10) is identical and be provided with external screw thread on hollow cylinder (9a), the bottom face of anti-seepage machine (9) is installed between packing ring (7a) and the piston (7b), and pass through nut (7c) with piston (7b), the bottom face of anti-seepage machine (9), packing ring (7a) is pressed on successively and is with an externally threaded end on the stopper rod (7), the top of anti-seepage machine (9) by hollow cylinder (9a) the bottom surface and hollow cylinder (9a) and pump barrel lid (8) between being threaded and being stacked, be fixed on the top end face of pump barrel (10).

A kind of sprayer that provides according to the utility model, be separated by on the barrels of 90 degree vertically at pump barrel (10) middle part with two return-air holes (10b) that symmetry has two Yao Yuan holes (10a), the mid point of each Yao Yuan hole (10a) short transverse is identical with the height of anti-seepage machine (9) hollow core body (9b) apart from the distance between pump barrel (10) top end face; On the end face of pump barrel lid (8), also have the ventilative aperture (8a) more than 1 that communicates with anti-seepage machine (9) inner chamber.

A kind of sprayer that provides according to the utility model has a patchhole (3a) that communicates with the inner chamber of cartridge (1), plug-in mounting one automatic air pressure regulator in patchhole (3a) on the end face of the loam cake (3) of cartridge (1).

A kind of sprayer that provides according to the utility model, described automatic air pressure regulator is socketed to form by the outer Membrane cover (4) of thin-walled of the test tube shape that the valve core body (6) and the employing elastomeric material of test tube shape are made, wherein: the top of valve core body (6) is provided with external screw thread, the middle part is provided with the round platform of protrusion, the bottom has more than one air admission hole (6a), the bottom of outer Membrane cover (4) has more than one venthole (4a), insert from the lower end of patchhole (3a) on the top of valve core body (6), and on it, stretch out, and the automatic air pressure regulator is fixed on the loam cake (3) by nut (5).

A kind of sprayer according to the utility model provides is equipped with sealing ring (2) at pump barrel lid (8), loam cake (3) with the binding site of cartridge (1).

According to a kind of sprayer that the utility model provides, nut (5) also is provided with sealing ring (2) with the binding site of loam cake (3).

Because the utility model employing anti-seepage machine (9) has replaced pump cover felt collar, felt holder between pump barrel (10) and the pump barrel lid (8), the fluid-tight performance is improved, and can outwards not seeped water in pump barrel lid (8) top of sprayer; Because the utility model all adopts the well behaved ring structure of fluid-tight at loam cake (3), the pump barrel lid (8) of cartridge (1) with the binding site of cartridge (1) and the binding site of nut (5) and loam cake (3), make that soup can be from the outside seepage of above-mentioned binding site, the gas molecule of soup can outwards not overflowed.Therefore, the utility model is in use air tight, liquid, and the health of can not poisoning and make dirty has improved peasant's working condition so greatly, has removed peasant's worry.

Description of drawings:

Fig. 1 is the structural representation of the utility model most preferred embodiment;

Fig. 2 is the local amplification view of I part among Fig. 1;

Fig. 3 is the local amplification view of II part among Fig. 1;

Fig. 4 is the half sectional view of pump barrel in the utility model most preferred embodiment;

Fig. 5 is that the anti-seepage machine in the utility model most preferred embodiment is in the half sectional view under the non-working condition.

Wherein: 1, cartridge 2, sealing ring 3, loam cake 3a, patchhole 4, outer Membrane cover 4a, venthole 5, nut 6, valve core body 6a, air admission hole 7, stopper rod 7a, packing ring 7b, piston 7c, nut 8, pump barrel lid 8a, ventilative aperture 9, anti-seepage machine 9a, hollow cylinder 9b, hollow body 9c, through hole 10, pump barrel 10a, Yao Yuan hole 10b, return-air hole 11, air chamber 12, injecting-unit.

The utility model is described in further detail below in conjunction with most preferred embodiment of the present utility model:

Referring to above-mentioned accompanying drawing, most preferred embodiment of the present utility model is original 3WB-16 type knapsack sprayer to be carried out structural improvement form.

The hollow cylinder (9a) on anti-seepage machine (9) top can adopt engineering plastics to make, the hollow body (9b) of bottom can adopt the elastomeric material of good springiness to make, and can bond together mutually by the corrosion resistant binding agent of waterproof between hollow cylinder (9a) and hollow body (9b) to constitute anti-seepage machine (9).

The Yao Yuan hole (10a) of being opened on the pump barrel (10), the mid point of its short transverse is 6cm apart from the distance between pump barrel (10) top end face, the height of anti-seepage machine (9) hollow core body (9b) is also got 6cm, because the stroke of stopper rod (7) is 6-10cm, therefore when reciprocating, its stroke is in the elastic limit of hollow body (9b) in pump barrel (10) for stopper rod (7).

Have 1 ventilative aperture (8a) on the end face of pump barrel lid (8), sealing ring (2) selects for use the good elastomeric material of antiseptic property to make.

Valve core body (6) can adopt Shooting Technique to make, and its underpart has an air admission hole (6a); Outer Membrane cover (4) can adopt good, the corrosion resistant elastomeric material of elasticity to make, and its underpart has a venthole (4a), and outer Membrane cover (4) elasticity and the bottom that closely is socketed in valve core body (6) constitute the automatic air pressure regulator.

Being provided with on the one hand of anti-seepage machine (9) can protect stopper rod (7) to avoid the etch of soup, topmost effect is to prevent effectively that soup from spilling through the top of pump barrel lid (8), this be because: 1, anti-seepage machine (9) can be gone up and spill when moving upward with stopper rod (7) thereby stop soup to arrive stopper rod (7) with soup retaining outside stopper rod (7); 2, have Yao Yuan hole (10a) on the pump barrel (10), can make the soup that is penetrated between anti-seepage machine (9) and pump barrel (10) like this, when anti-seepage machine (9), piston (7b) move to the position in Yao Yuan hole (10a) with stopper rod (7), be extruded pump barrel (10) and flow back in the cartridge (1), thereby guarantee that soup can not cover the outside seepage of binding site of (8) and cartridge (1) from pump barrel.

Sealing ring (2) is located at pump barrel lid (8), loam cake (3) and the binding site of cartridge (1) and the binding site of nut (5) and loam cake (3), the utility model just becomes a kind of sprayer of totally-enclosed, high-seal like this, can guarantee soup and gas molecule thereof not outwards seepage overflow.

The utility model in use, soup face in the medicinal liquor barrel (1) constantly descends, cause the pressure of the interior gas of cartridge (1) constantly to reduce, when the pressure in the cartridge (1) is lower than atmospheric pressure, be arranged on the effect that automatic air pressure regulator on the loam cake (3) will play pressure regulation automatically: promptly ambient atmos overcomes the resistance between valve core body (6) and outer Membrane cover (4), venthole (4a) outside air admission hole (6a) warp on valve core body (6) on the Membrane cover (4) enters in the cartridge (1) automatically, thereby under the situation that does not influence all-sealed structure of the present utility model, can guarantee in the cartridge (1), outer air pressure can be adjusted voluntarily, reaches a kind of pressure balance all the time; The setting of ventilative aperture (8a) is to be convenient to ambient atmosphere communicate with the inner chamber of anti-seepage machine (9); Yao Yuan hole (10a) accumulates in infiltration the apocenosis passage effect that the soup on the piston (7b) drains except that mainly playing, and also can cooperate return-air hole (10b) to play the gas passage effect that pump barrel (10) and gas in the cartridge (1) are exchanged.

When anti-seepage machine (9) is reciprocating with stopper rod (7), because the pressure regulation effect of automatic air pressure regulator, because ventilative aperture (8a), Yao Yuan hole (10a), the existence of movement clearance between return-air hole (10b) and stopper rod (7) and pump barrel lid (8), make that the inner chamber of anti-seepage machine (9) is outside to the gas pressure between pump barrel (10) inner tube wall to gas pressure between pump barrel lid (8) and anti-seepage machine (9), on the amplitude that changes, can remain unanimity, i.e. two kinds of gas pressures or increase simultaneously, or reduce simultaneously, that is to say anti-seepage machine (9) in, external pressure drives in the reciprocating process of hollow body (9b) at stopper rod (7) and remains a kind of poised state, like this anti-seepage machine (9) neither can and stopper rod (7) between rub, also can not rub with the inner tube wall of pump barrel (10), both guaranteed the reliable and stable of the utility model service behaviour, corresponding again service life of improving anti-seepage machine (9).

When sealing ring (2), automatic air pressure regulator, anti-seepage machine parts such as (9) after all installing on the original 3WB-16 type knapsack sprayer, the utility model can normally use.

Claims

1, a kind of sprayer, it is by cartridge (1), pump barrel (10), air chamber (11) and injecting-unit compositions such as (12), be equipped with in the pump barrel (10) and be with externally threaded stopper rod (7) on the bottom body of rod, pump barrel lid (8) is housed on the stopper rod (7) successively, packing ring (7a), piston (7b), nut (7c), be provided with internal thread in the pump barrel lid (8), be provided with two return-air holes (10b) symmetrically on the cylindrical shell on pump barrel (10) top, pump barrel (10) cylindrical shell that is positioned at return-air hole (10b) top is provided with external screw thread, internal thread in this external screw thread and the pump barrel lid (8) is complementary, it is characterized in that: go back suit one anti-seepage machine (9) outside the stopper rod (7) in pump barrel (10), anti-seepage machine (9) is the hollow body (9b) that is the test tube shape that circular hollow cylinder (9a) and bottom adopts elastomeric material to make by top and is formed by connecting, and the bottom center at hollow body (9b) also has a through hole (9c), the external diameter of the external diameter of hollow cylinder (9a) and pump barrel (10) is identical and be provided with external screw thread on hollow cylinder (9a), the bottom face of anti-seepage machine (9) is installed between packing ring (7a) and the piston (7b), and pass through nut (7c) with piston (7b), the bottom face of anti-seepage machine (9), packing ring (7a) is pressed on successively and is with an externally threaded end on the stopper rod (7), the top of anti-seepage machine (9) by hollow cylinder (9a) the bottom surface and hollow cylinder (9a) and pump barrel lid (8) between being threaded and being stacked, be fixed on the top end face of pump barrel (10).

2, a kind of sprayer according to claim 1, it is characterized in that: be separated by on the barrels of 90 degree vertically at pump barrel (10) middle part with two return-air holes (10b) that symmetry has two Yao Yuan holes (10a), the mid point of each Yao Yuan hole (10a) short transverse is identical with the height of anti-seepage machine (9) hollow core body (9b) apart from the distance between pump barrel (10) top end face; On the end face of pump barrel lid (8), also have the ventilative aperture (8a) more than 1 that communicates with anti-seepage machine (9) inner chamber.

3, a kind of sprayer according to claim 1, it is characterized in that: on the end face of the loam cake (3) of cartridge (1), have a patchhole (3a) that communicates with the inner chamber of cartridge (1), plug-in mounting one automatic air pressure regulator in patchhole (3a).

4, a kind of sprayer according to claim 3, it is characterized in that: the automatic air pressure regulator is socketed to form by the outer Membrane cover (4) of thin-walled of the test tube shape that the valve core body (6) and the employing elastomeric material of test tube shape are made, wherein: the top of valve core body (6) is provided with external screw thread, the middle part is provided with the round platform of protrusion, the bottom has more than one air admission hole (6a), the bottom of outer Membrane cover (4) has more than one venthole (4a), insert from the lower end of patchhole (3a) on the top of valve core body (6), and on it, stretch out, and the automatic air pressure regulator is fixed on the loam cake (3) by nut (5).

5, according to claim 2 or 3 described a kind of sprayers, it is characterized in that: be equipped with sealing ring (2) with the binding site of cartridge (1) at pump barrel lid (8), loam cake (3).

6, a kind of sprayer according to claim 4 is characterized in that: the binding site at nut (5) and loam cake (3) also is provided with sealing ring (2).