CN101670323A - Exhaust device for sprayer switch - Google Patents

Abstract

The invention discloses an exhaust device for a sprayer switch, which comprises a water outlet pipe connected with a water outlet of a sprayer. The water outlet pipe is connected with a handle, the handle is connected with a spray gun through a spray gun switch, the spray gun switch comprises a connecting pipe communicated with the handle and a spray rod, one side of the connecting pipe is provided with a rotating spanner, the other end of the connecting pipe is provided with a joint, a transverse valve core is arranged in the connecting pipe, one end of the transverse valve core is contactedwith the rotating spanner, the other end of the transverse valve core is provided with a sealing ring A, one end of the sealing ring A is matched with a water outlet valve hole in the connecting pipe,and the other end of the sealing ring A is connected with a water outlet spring. The exhaust device for the sprayer switch is characterized in that the joint is connected with an exhaust valve body,the middle part of the exhaust valve body is provided with an exhaust nozzle, the inner wall of the exhaust valve body is provided with an exhaust valve hole which is matched with an exhaust valve core, one end of the exhaust valve core is connected with a sealing ring B, the sealing ring B is contacted with an exhaust spring, the exhaust spring is sealed in the exhaust valve body through a covercap, the other end of the exhaust valve core is fixedly connected with a push block, and the push block is contacted with the end face of the exhaust valve body.

Description

Exhaust device for sprayer switch

Technical field

The present invention relates to sprayer, particularly relate to the exhaust apparatus on the sprayer switch, belong to agricultural plant protection machinery.

Background technology

Sprayer is a kind of agricultural plant protection machinery commonly used, because hand sprayer labour intensity is big, so power spraye is used widely.Power spraye comprises spray tank, and spray tank connects electrodynamic pump (combination of motor and pump) through water inlet pipe, and the delivery port of electrodynamic pump connects outlet pipe, and outlet pipe connects handle, and Switch of spray pistol is housed on the handle, and Switch of spray pistol is communicated with spray boom, and shower nozzle is installed on the spray boom.But after the soup in the spray tank has sprayed, the disable motor power supply, motor is owing to effect of inertia is still rotating, air is sucked in the outlet pipe, when re-using to next time, owing to have a large amount of air in the outlet pipe, the spray orifice of shower nozzle is little, exhaust problem, if do not discharge the air in the outlet pipe, will cause following problem: the first, be not easy to suck liquid, discharge capacity is reduced, influence spray effect; The second, air produces concussion, thereby causes the spray boom vibration, holds not steady.So the operator have to pull down shower nozzle, carry out exhaust, up to from spray boom ejection soup the time, air is just discharged fully, and the operation of dismounting shower nozzle is trouble very, wastes soup again.

Summary of the invention

The objective of the invention is provides a kind of exhaust apparatus of installing in order to overcome the shortcoming that prior art exists on Switch of spray pistol, close switch before the work, and open exhaust apparatus, air in the outlet pipe is discharged, and exhaust velocity is fast, easy to operate exhaust device for sprayer switch.

The technical scheme of exhaust device for sprayer switch of the present invention is: comprise the outlet pipe that links to each other with the sprayer delivery port, outlet pipe connects handle, handle connects spray boom through Switch of spray pistol, described Switch of spray pistol comprises the tube connector that communicates with handle and spray boom, one side of tube connector is equipped with rotating spanner, the opposite side of tube connector is shaped on interface, horizontal spool is housed in the tube connector, laterally one of spool contacts with rotating spanner, laterally the sealing ring first is equipped with in the other end of spool, water exit valve hole in one end of sealing ring first and the tube connector matches, and the other end of sealing ring first connects the water outlet spring, it is characterized in that described interface connects exhaust valve, the middle part of exhaust valve is shaped on exhaust nozzle, the inwall of exhaust valve is shaped on air release valve hole, and air release valve hole matches with exhaust plug, and one of exhaust plug connects sealing ring second, sealing ring second contacts with exhaust spring, exhaust spring in block is enclosed in exhaust valve, the affixed pushing block in the other end of exhaust plug, pushing block contacts with the end face of exhaust valve.

Exhaust device for sprayer switch of the present invention, its exhaust apparatus and Switch of spray pistol (being outlet valve) combine together, and exhaust valve makes the water outlet spring be positioned at interface, compact conformation all the time in fact again as the gland of water outlet spring; Because after the spray medicine finished, a large amount of air entered outlet pipe (rubber tube), and this moment, switch cut out, outlet pipe does not communicate with spray boom, but outlet pipe communicates with exhaust valve, is very advantageous in the interior air of outlet pipe and discharges fast.When being exhaust, Switch of spray pistol is in closed condition, and outlet pipe, water exit valve hole and exhaust valve communicate, press pushing block, pushing block drives exhaust plug and breaks away from air release valve hole, and air release valve hole is opened, air in the outlet pipe is directly discharged valve body through air release valve hole from exhaust nozzle, and speed is fast; Exhaust is unclamped pushing block after finishing, and exhaust plug is closed air release valve hole under the reset response of exhaust spring; During hydrojet, press rotating spanner once more, make horizontal spool drive sealing ring onycholysis water exit valve hole, water exit valve hole is opened, and outlet pipe is communicated with spray boom, and soup sprays from spray boom.After air was discharged, the pressure in the outlet pipe sharply descended, and helped electric-motor pump and sucked soup, increased discharge capacity, spray effect is good, and the soup in the spray boom is mobile smooth and easy, holds balance, pass through release sprayhead exhaust phase ratio with prior art, it is quite convenient to operate, and can not waste soup again.

Exhaust device for sprayer switch of the present invention, the air release valve hole of its described exhaust valve inwall are conical, and air release valve hole cooperates through taper seat with exhaust plug, good seal performance.Its described pushing block is shaped on mesopore, the mesopore inwall is shaped on draw-in groove, one of described exhaust plug is shaped on symmetrical stator first and stator second, the outside of stator first and stator second is shaped on trip first and trip second separately, trip first and trip second contact with draw-in groove respectively, and pushing block is connected reliably with exhaust plug.Its described block adopts with exhaust valve and is threaded.Its described exhaust nozzle is towards the spray boom direction, and the air of avoiding having soup sprays to human body, guarantees human body cleaning, pollution-free.

Description of drawings

Fig. 1 is the structural representation of exhaust device for sprayer switch of the present invention;

Fig. 2 is the A-A cross-sectional schematic of Fig. 1.

The specific embodiment

The invention discloses a kind of exhaust device for sprayer switch, as shown in Figure 1, comprise the outlet pipe that links to each other with the sprayer delivery port, outlet pipe connects handle 1, outside the handle 1 rubber sleeve 11 can be installed, help holding, handle 1 connects spray boom through Switch of spray pistol, described Switch of spray pistol comprises the tube connector 3 that communicates with handle 1 and spray boom, one side of tube connector 3 is equipped with rotating spanner 4, the opposite side of tube connector 3 is shaped on interface 31, horizontal spool 32 is housed in the tube connector, laterally one of spool 32 contacts with rotating spanner 4, laterally sealing ring first 33 is equipped with in the other end of spool 32, water exit valve hole 34 in one end of sealing ring first 33 and the tube connector 3 matches, the other end of sealing ring first 33 connects water outlet spring 35, it is characterized in that described interface 31 communicates with exhaust valve 41, as shown in Figure 2, the middle part of exhaust valve 41 is shaped on exhaust nozzle 42, the inwall of exhaust valve 41 is shaped on air release valve hole 43, air release valve hole 43 matches with exhaust plug 44, one of exhaust plug 44 connects sealing ring second 45, sealing ring second 45 contacts with exhaust spring 46, exhaust spring 46 47 is enclosed in the exhaust valve 41 through blocking a shot, the affixed pushing block 5 in the other end of exhaust plug 44, pushing block 5 contacts with the end face of exhaust valve 41.The exhaust apparatus of the technical program and Switch of spray pistol (being outlet valve) combine together, and exhaust valve 41 makes water outlet spring 35 be positioned at interface 31, compact conformation all the time in fact again as the gland of water outlet spring 35; Because after the spray medicine finished, a large amount of air entered outlet pipe (rubber tube), and this moment, Switch of spray pistol was closed, outlet pipe does not communicate with spray boom, but outlet pipe communicates with exhaust valve 41, is very advantageous in the interior air of outlet pipe and discharges fast.When being exhaust, Switch of spray pistol is in closed condition, outlet pipe, water exit valve hole 34 and exhaust valve 41 communicate, press pushing block 5, pushing block 5 drives exhaust plug 44 and breaks away from air release valve hole 43, air release valve hole 43 is opened, and the air in the outlet pipe is directly discharged valve body through air release valve hole 43 from exhaust nozzle 42, and speed is fast; Exhaust is unclamped pushing block 5 after finishing, and exhaust plug 44 is closed air release valve hole under the reset response of exhaust spring 46; During hydrojet, press rotating spanner 4 once more, make horizontal spool 32 drive sealing ring first 33 and break away from water exit valve holes 34, water exit valve hole 34 is opened, and outlet pipe is communicated with spray boom, and soup sprays from spray boom.After air was discharged, the pressure in the outlet pipe sharply descended, and helped electric-motor pump and sucked soup, increased discharge capacity, spray effect is good, and the soup in the spray boom is mobile smooth and easy, holds balance, pass through release sprayhead exhaust phase ratio with prior art, it is quite convenient to operate, and can not waste soup again.The air release valve hole 43 of its described exhaust valve 41 inwalls is conical, and air release valve hole 43 and exhaust plug 44 cooperate good seal performance through taper seat.Its described pushing block 5 is shaped on mesopore 51, the mesopore inwall is shaped on draw-in groove 52, one of described exhaust plug 44 is shaped on symmetrical stator first 48 and stator second 49, the outside of stator first 48 and stator second 49 is shaped on trip first 481 and trip second 491 separately, trip first 481 and trip second 491 contact with draw-in groove 52 respectively, pushing block 5 is connected with exhaust plug 44 reliably, also can adopts other connected mode.Its described block 47 and exhaust valve 41 adopts and is threaded, and also can adopt other connected mode, as bonding connection etc.Its described exhaust nozzle 42 is towards the spray boom direction, and the air of avoiding having soup sprays to human body, guarantees human body cleaning, pollution-free.

Claims (5)

1, exhaust device for sprayer switch, comprise the outlet pipe that links to each other with the sprayer delivery port, outlet pipe connects handle, handle connects spray boom through Switch of spray pistol, described Switch of spray pistol comprises the tube connector that communicates with handle and spray boom, one side of tube connector is equipped with rotating spanner, the opposite side of tube connector is shaped on interface, horizontal spool is housed in the tube connector, laterally one of spool contacts with rotating spanner, laterally the sealing ring first is equipped with in the other end of spool, water exit valve hole in one end of sealing ring first and the tube connector matches, the other end of sealing ring first connects the water outlet spring, it is characterized in that described interface (31) communicates with exhaust valve (41), the middle part of exhaust valve (41) is shaped on exhaust nozzle (42), the inwall of exhaust valve (41) is shaped on air release valve hole (43), air release valve hole (43) matches with exhaust plug (44), one of exhaust plug (44) connects sealing ring second (45), sealing ring second (45) contacts with exhaust spring (46), exhaust spring (46) is enclosed in the exhaust valve (41) through block (47), the affixed pushing block in other end (5) of exhaust plug (44), pushing block (5) contacts with the end face of exhaust valve (41).

2, exhaust device for sprayer switch as claimed in claim 1, the air release valve hole (43) that it is characterized in that described exhaust valve (41) inwall are conical.

3, exhaust device for sprayer switch as claimed in claim 1, it is characterized in that described pushing block (5) is shaped on mesopore (51), the mesopore inwall is shaped on draw-in groove (52), one of described exhaust plug (44) is shaped on symmetrical stator first (48) and stator second (49), the outside of stator first (48) and stator second (49) is shaped on trip first (481) and trip second (491) separately, and trip first (481) and trip second (491) contact with draw-in groove (52) respectively.

4, exhaust device for sprayer switch as claimed in claim 1 is characterized in that described block (47) is threaded with exhaust valve (41) employing.

5, exhaust device for sprayer switch as claimed in claim 1 is characterized in that described exhaust nozzle (42) is towards the spray boom direction.

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