CN2283521Y

CN2283521Y - High-efficient safety knapsack sprayer

Info

Publication number: CN2283521Y
Application number: CN 96209188
Authority: CN
Inventors: 王会生; 王强
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-30
Filing date: 1996-04-30
Publication date: 1998-06-10
Anticipated expiration: 2006-04-30

Abstract

The utility model provides a safe knapsack sprayer with high efficiency. An air chamber of the utility model is arranged in a medicine liquid box. The wall of the medicine liquid box, which is penetrated through by a piston rod on an air cylinder with high pressure, is provided with a leakage preventing disk which is fixed on the medicine liquid box, and the edge of the leakage preventing disk is provided with an upward flanging. The bottom surface of the leakage preventing disk is provided with a leakage hole, and the edge of the leakage hole is provided with a downward flanging. A position on the wall of the medicine liquid box, which is opposite to the position of the leakage hole on the bottom surface of the leakage preventing disk, is provided with a hole, and the flanging of the leakage hole is inserted in the hole of the wall of the medicine liquid box. The utility model has the advantages that medicine liquid leakage is fundamentally prevented, service life and medicine liquid delivering efficiency are increased, and the labor intensity of a user is lightened.

Description

The knapsack sprayer of highly effective and safe

The utility model relates to a kind of sprayer, especially a kind of knapsack sprayer of highly effective and safe.

Often use the atomizers spray agricultural chemicals in the agricultural production, the air chamber of existing knapsack sprayer is provided in a side of the outside of spray tank, the side that generally is provided in a side of spray tank, be provided with like this, when using sprayer or moving it, very easily damage because of collision, cause leakage medicine, the peripheral hardware air chamber, can break because of its inner air pressure increases owing to be heated because of usually being to shine upon use down.In addition, the piston rod of gas cylinder passes the spray tank place, also usually has soup and leaks.Leak medicine between the air chamber of peripheral hardware or piston rod and the spray tank all can cause the operator to poison and the waste of soup no matter be, the rapid wear of peripheral hardware air chamber, usually increased the trouble of renewal part,, also can affect adversely farming season as purchasing less than part for the moment to the user, in addition, the gas cylinder of existing sprayer is single-acting, that is: reciprocating motion of the pistons once, imbibition is once, discharge opeing once, drug delivery efficient like this is lower.

The purpose of this utility model is to improve the deficiencies in the prior art, provides a kind of air chamber to be difficult for being damaged, between the piston rod of gas cylinder and the spray tank no longer to the medicine that leaks outside, knapsack sprayer safe in utilization.

The further purpose of the utility model is to improve the structure of the gas cylinder of existing knapsack sprayer, provides a kind of drug delivery efficient high knapsack sprayer.

The purpose of this utility model is achieved in that knapsack sprayer includes spray tank, gas cylinder, air chamber, connecting rod, handle and spray gun, handle is fixed on outside one side of spray tank, gas cylinder is fixed in the spray tank, the two ends of connecting rod link with the piston rod of handle and gas cylinder respectively, can drive piston rod and in air cylinder body, pump by moving handle, air chamber places in the spray tank, its lower port is provided with two ports, the one port communicates with gas cylinder discharge opeing port, its another port links by the inlet that carrier pipe passes soup tank wall and spray gun, the imbibition port of gas cylinder communicates with spray tank, on gas cylinder imbibition port, be provided with check valve, only permitted liquid and enter gas cylinder from spray tank, the port that flows back to spray tank is cut off, and the passage port that communicates with gas cylinder on the lower port of air chamber also is provided with check valve, only permitted the inlet of the flow direction spray gun in the air chamber, the port that flows back to gas cylinder is cut off.

Pass at the piston rod on the gas cylinder on the tank wall at spray tank place and establish a sealed against leakage dish, plate edge has a flange that makes progress, disk center's perforate, be through on the piston rod and be fixed on the spray tank, try to get to the heart of a matter and open a small opening on the face, bore edges has a downward flange, opens a hole on the soup tank wall of the position of the small opening of opening on respect to the face of trying to get to the heart of a matter, and the flange of described small opening is inserted in the hole of tank wall.In use between piston rod and spray tank, flow out, then caught, flow back to spray tank by the leakproof small opening of being opened on the face of trying to get to the heart of a matter then by anti-drain cap if any soup.

Described gas cylinder can be single-acting, also can be dbl act.

If single-lift gas cylinder, then air chamber places in the spray tank, its lower port is provided with two ports, the one port communicates with one of gas cylinder lower end two ports, its another port links by the inlet that carrier pipe passes soup tank wall and spray gun, and another port in gas cylinder two ports communicates with spray tank, on the lower port of gas cylinder and port that spray tank communicates, be provided with check valve, the passage port that communicates with gas cylinder on the lower port of air chamber also is provided with check valve.

Above-mentioned single-lift gas cylinder piston pumps once, for once carry liquid to air chamber, efficient is not high like this, the further purpose of the utility model is to realize like this, the above-mentioned gas cylinder of for once infusing of two dynamic high-pressure inflators replacements of carrying liquid to air chamber twice is arranged with reciprocating motion: two dynamic high-pressure inflators are made up of cylindrical shell and piston, cylindrical shell and piston fit to seal and constitute A chamber and B chamber, piston has a through hole along its axis, a check valve is established in the bottom of cylindrical shell A chamber, with spray tank UNICOM, the openings place of piston one end at place, A chamber also establishes a check valve, porose on the wall of piston, through hole in the piston is linked up mutually with the B chamber, but piston and cylindrical shell constitute movable sealing at cylinder top, one of the openings that is in the outer other end of cylindrical shell of piston and lower end two ports of above-mentioned air chamber link.

When the relative cylindrical shell of piston outwards moved, the check valve on the cylindrical shell was opened, the check valve closure on the piston, and soup enters the A chamber, and B chamber volume reduces simultaneously, and the soup in it flows into the piston inner via hole from the aperture on the piston and enters air chamber; When the relative cylindrical shell of piston inwardly moves, the check valve closure on the cylindrical shell, the check valve on the piston is opened, soup enters the openings of piston, and a part is sent to air chamber, and a part flows into the B chamber from the aperture on the piston, so move in circles, soup then is sent to air chamber incessantly.

The knapsack sprayer of the highly effective and safe that the utility model provides, by air chamber being moved in the spray tank and anti-drain cap being set between spray tank and piston rod, fundamentally prevented the leakage of soup, improved its service life, adopt two dynamic high-pressure inflators to replace the gas cylinder of single action in addition, improve the soup transfer efficiency, alleviated user's labour intensity.

The utility model is described in further detail below by drawings and Examples.

The main station portion cutaway view of Fig. 1: the utility model embodiment 1;

The main station portion cutaway view of Fig. 2: the utility model embodiment 2;

Two dynamic high-pressure inflator structure schematic diagrames among Fig. 3: the embodiment 2;

The A-A cutaway view of Fig. 4: Fig. 3;

The B-B cutaway view of Fig. 5: Fig. 3;

Fig. 6: anti-drain cap structural representation.

Embodiment 1:

As shown in Figure 1, handle 2 is set outside spray tank 1, single action gas cylinder 3 is set in spray tank, the two ends of connecting rod 4 connect the piston rod 5 of handle 2 and single action gas cylinder 3 respectively, by the swing of handle, piston rod are back and forth moved up and down in gas cylinder.There is one or two port the below of gas cylinder, wherein a port 3-1 links up by filter screen 6 and spray tank are interior, one of two ports of air chamber 7 lower ends that its another port 3-2 is interior with being located at spray tank 7-1 links up mutually, and air chamber 7 lower ends another port 7-2 links by the liquid inlet of pipeline and spray gun 8.In port 3-1 and port 7-1, be equipped with glass marble as the check valve spool.

On the hole that spray tank outer piston bar passes, be provided with anti-drain cap 9, as shown in Figure 6, the chassis edge of anti-drain cap 9 has a upper overturning 9-1, center chassis has a hole 9-2 to be used to be through piston rod, to prevent that at upper cover of piston rod one nut drain cap 9 is fixed on the spray tank, and have a small opening 9-3 on the bottom surface of anti-drain cap 9, this small opening has a flange 9-4 downwards, with the tank wall of the corresponding spray tank of small opening 9-3 on have a hole, the following flange 9-4 of small opening 9-3 can be inserted in the described hole on the tank wall.

Embodiment 2:

On the basis of embodiment 1, single action gas cylinder 3 is replaced with two dynamic high-pressure inflators 10.Two dynamic high-pressure inflators 10 are made up of cylindrical shell 10-1 and piston 10-2, shown in Fig. 3,4,5, piston 10-2 is divided into isolated mutually A chamber and B chamber to cylindrical shell 10-1, it is the check valve of spool by glass marble 10-7 that the end of cylindrical shell 10-1 establishes one, piston 10-2 is the shaft that there is a through hole at a center, the one end also has one to be the check valve of spool by glass marble 10-6, on the piston 10-2 bar wall two through hole 10-3 is arranged, and the through hole at piston 10-2 center is linked up mutually with the B chamber.But piston 10-2 and cylindrical shell 10-1 constitute movable sealing at cylinder top by sealing ring 10-4, the openings 10-5 that is in the outer other end of cylindrical shell of piston and the lower end port 7-1 of above-mentioned air chamber 7 link, and check valve one end that is provided with of cylindrical shell 10-1 is linked up by filter screen 6 and spray tank are interior.

Claims

1, a kind of knapsack sprayer of highly effective and safe, include spray tank, gas cylinder, air chamber, connecting rod, handle and spray gun, handle is fixed on outside one side of spray tank, gas cylinder is fixed in the spray tank, the two ends of connecting rod link with the piston rod of handle and gas cylinder respectively, it is characterized in that: air chamber places in the spray tank, its lower port is provided with two ports, the one port communicates with gas cylinder discharge opeing port, its another port links by the inlet that carrier pipe passes soup tank wall and spray gun, the imbibition port of gas cylinder communicates with spray tank, on gas cylinder imbibition port, be provided with check valve, the passage port that communicates with gas cylinder on the lower port of air chamber also is provided with check valve;

Pass at the piston rod on the gas cylinder on the tank wall at spray tank place and establish a sealed against leakage dish, plate edge has a flange that makes progress, disk center's perforate, be through on the piston rod and be fixed on the spray tank, try to get to the heart of a matter and open a small opening on the face, bore edges has a downward flange, opens a hole on the soup tank wall of the position of the small opening of opening on respect to the face of trying to get to the heart of a matter, and the flange of described small opening is inserted in the hole of tank wall.

2, the knapsack sprayer of highly effective and safe according to claim 1, it is characterized in that: described gas cylinder is single-lift, air chamber places in the spray tank, its lower port is provided with two ports, the one port communicates with one of gas cylinder lower end two ports, its another port links by the inlet that carrier pipe passes soup tank wall and spray gun, another port in gas cylinder two ports communicates with spray tank, on on the lower port of gas cylinder and port that spray tank communicates, be provided with check valve, the passage port that communicates with gas cylinder on the lower port of air chamber also is provided with check valve.

3, the knapsack sprayer of highly effective and safe according to claim 1, it is characterized in that: described gas cylinder is a double-acting, it is made up of cylindrical shell and piston, cylindrical shell and piston fit to seal and constitute A chamber and B chamber, piston has a through hole along its axis, a check valve is established in the bottom of cylindrical shell A chamber, with spray tank UNICOM, the openings place of piston one end at place, A chamber also establishes a check valve, porose on the wall of piston, through hole in the piston is linked up mutually with the B chamber, but piston and cylindrical shell constitute movable sealing at cylinder top, one of the openings that is in the outer other end of cylindrical shell of piston and lower end two ports of above-mentioned air chamber link.