CN204961913U - Spray quick pressure release of liquid medicine and press control valve along separate routes together - Google Patents

Abstract

Spray quick pressure release of liquid medicine and press control valve along separate routes together belongs to agricultural machine, set up the feed liquor chamber, the hydrojet chamber, on the valve body in pressure relief cavity and pressure regulating chamber, install box and shower nozzle down on the tip respectively, at box internal stability dress mounting panel and last, lower limit switch, admittedly adorn the motor of driving gear, pair intermediate gear reaches the screw spindle of adorning drive gear admittedly and joins in marriage the dress on the mounting panel, cartridge main shaft in the valve body, from the last gag lever post of installing in proper order extremely down on the main shaft, go up the jump ring, go up the cone valve, go up compression spring, well cone valve, well jump ring, lower jump ring and lower cone valve, under under the cone valve lateral part join in marriage and load compression spring, screw spindle and main shaft threaded connection, join in marriage the dress on the valve body admittedly adorn adjust knob's pressure regulating valve rod, and be located the pressure regulating intracavity, this valve novel structure uses reliably, and the regulation and control operation is simple and easy convenient, can effectively avoid and eliminate when stopping the liquid medicine and spraying the operation leakage of shower nozzle and drip the trouble with the back and take place, and nos liquid medicine loses, low in production cost, and work quality is good.

Description

Spray liquid quick pressure releasing and the same pressure control valve of shunt

Technical field

The invention belongs to farm machinery, relates generally to the quick pressure releasing on a kind of spray liquid facility and the same pressure control valve of shunt.

Background technique

For avoiding the injury to agricultural crops, ensureing quality of agricultural product, reducing liquid loss, reducing operating cost, have strict technical requirements to crops spray liquid agronomy.At present, the leakage of shower nozzle liquid after spray liquid and dribble is stopped to be one of subject matter affecting spray liquid operation quality.Because existing medicine liquid spray device is not provided with liquid decompression or decompression mechanism, under situation does not fall in liquid system herb liquid pressure, can only being sealed and matched between the spool of single dependence liquid medicine sprayer and valve seat realize stopping spray liquid, the leakage of liquid and dribble are comparatively outstanding, have impact on medicine liquid spray operation quality.

Summary of the invention

The object of the invention is exactly for above-mentioned prior art Problems existing, design provides a kind of spray liquid quick pressure releasing and along separate routes same pressure control valve, reach avoid and eliminate stop medicine liquid spray operation after the leakage of liquid medicine sprayer and the rear fault object that occurs, reduce liquid loss, reduce operating cost, ensure operation quality.

The object of the invention is achieved in that and arranges admission chamber, hydrojet chamber, pressure-releasing chamber and pressure regulating cavity in valve body, and described admission chamber is communicated with pressure regulating cavity with hydrojet chamber respectively, and described hydrojet chamber is communicated with pressure-releasing chamber, shower nozzle is packed on valve body lower side, and is communicated with hydrojet chamber, casing is installed in lateral part, described valve body upper end, mounting plate, upper limit position switch and lower position switch are packed in casing, motor is fixedly mounted with on a mounting board, duplex intermediate gear and the rotating installation of thread spindle are on a mounting board, described motor and thread spindle are fixedly mounted with driving gear and actuation gear respectively, described driving gear engages with duplex intermediate gear, and duplex intermediate gear engages with actuation gear, the inserting that main shaft can move axially up and down, in valve body, on described main shaft upper end portion, is positioned at box house and is fixedly mounted with position-limited lever, and described position-limited lever and upper and lower limit bit switch are in contacting or disengaging cooperation, described main shaft can be set with upper conical valve from top to bottom successively in axial sliding, middle cone valve and lower cone valve, described upper conical valve and middle cone valve are positioned at feed liquor case, upper conical valve and admission chamber and pressure regulating cavity are communicated with valve opening in contacting close fit, middle cone valve and admission chamber and hydrojet chamber are communicated with valve opening in contacting close fit, described lower cone valve is positioned at pressure-releasing chamber, and be communicated with valve opening in contacting close fit with hydrojet chamber and pressure-releasing chamber, upper jump ring, middle jump ring and lower circlip are packed on main shaft from top to bottom successively, described upper jump ring is positioned at above upper conical valve, middle jump ring is arranged in below cone valve, lower circlip is positioned at above lower cone valve, upward pressure spring housing is contained on main shaft, described upward pressure spring upper, lower end contacts with middle cone valve with upper conical valve respectively and coordinates, in described pressure-releasing chamber, be positioned at equipped downforce spring on the downside of lower cone valve, described downforce lower spring end axially locating on pressure-releasing chamber, downforce spring upper end contacts with lower cone valve and coordinates, the equipped pressure regulation valve rod that described pressure regulating cavity can move axially, described pressure regulation valve rod coordinates in inserting close fit or departing to insert with the inlet opening of pressure regulating cavity, equipped adjusting pressuring knob on pressure regulation valve rod outer end, so far forms spray liquid quick pressure releasing and the same pressure control valve of shunt.

The invention novel structure, uses reliable, control manipulation simple and convenient, and leakage and the rear fault that can effectively avoid and eliminate liquid medicine sprayer when stopping medicine liquid spray operation occur, and without liquid loss, cost of production is low, and operation quality is good.

Accompanying drawing explanation

Fig. 1 is spray liquid quick pressure releasing with along separate routes with pressure control valve general structure schematic diagram.

In figure, piece number illustrates:

1, mounting plate, 2, driving gear, 3, motor, 4, duplex intermediate gear, 5, actuation gear, 6, thread spindle, 7, upper limit position switch, 8, lower position switch, 9, main shaft, 10, pressure regulation valve rod, 11, adjusting pressuring knob, 12, upper conical valve, 13, middle cone valve, 14, lower cone valve, 15, upper jump ring, 16, upward pressure spring, 17, middle jump ring, 18, downforce spring, 19, shower nozzle, 20, hydrojet chamber, 21, pressure-releasing chamber, 22, lower circlip, 23, valve body, 24, admission chamber, 25, pressure regulating cavity, 26, position-limited lever, 27 casings.

Embodiment

Below in conjunction with accompanying drawing, the invention embodiment is described in detail.A kind of spray liquid quick pressure releasing and the same pressure control valve of shunt, in valve body 23, arrange admission chamber 24, hydrojet chamber 20, pressure-releasing chamber 21 and pressure regulating cavity 25, described admission chamber 24 is communicated with pressure regulating cavity 25 with hydrojet chamber 20 respectively, and described hydrojet chamber 20 is communicated with pressure-releasing chamber 21, shower nozzle 19 is packed on valve body 23 lower side, and is communicated with hydrojet chamber 20, casing 27 is installed in lateral part, described valve body 23 upper end, mounting plate 1, upper limit position switch 7 and lower position switch 8 are packed in casing 27, motor 3 is packed on mounting plate 1, duplex intermediate gear 4 and thread spindle 6 is rotating is arranged on mounting plate 1, described motor 3 and thread spindle 6 are fixedly mounted with driving gear 2 and actuation gear 5 respectively, described driving gear 2 engages with duplex intermediate gear 4, and duplex intermediate gear 4 engages with actuation gear 5, the inserting that main shaft 9 can move axially up and down, in valve body 23, on described main shaft 9 upper end portion, is positioned at casing 27 inside and is fixedly mounted with position-limited lever 26, and described position-limited lever 26 and upper and lower limit bit switch 7,8 are in contacting or disengaging cooperation, described main shaft 9 can be set with upper conical valve 12 from top to bottom successively in axial sliding, middle cone valve 13 and lower cone valve 14, described upper conical valve 12 and middle cone valve 13 are positioned at feed liquor case 24, upper conical valve 12 and admission chamber 24 and pressure regulating cavity 25 are communicated with valve opening in contacting close fit, middle cone valve 13 and admission chamber 24 and hydrojet chamber 20 are communicated with valve opening in contacting close fit, described lower cone valve 14 is positioned at pressure-releasing chamber 21, and be communicated with valve opening in contacting close fit with hydrojet chamber 20 and pressure-releasing chamber 21, upper jump ring 15, middle jump ring 17 and lower circlip 22 are packed on main shaft 9 from top to bottom successively, described upper jump ring 15 is positioned at above upper conical valve 12, middle jump ring 17 is arranged in below cone valve 13, lower circlip 22 is positioned at above lower cone valve 14, upward pressure spring 16 is sleeved on main shaft 9, described upward pressure spring 16 upper, lower end contacts with middle cone valve 13 with upper conical valve 12 respectively and coordinates, in described pressure-releasing chamber 21, be positioned at equipped downforce spring 18 on the downside of lower cone valve 14, described downforce spring 18 lower end axially locating on pressure-releasing chamber 21, downforce spring 18 upper end contacts with lower cone valve 14 and coordinates, the equipped pressure regulation valve rod 10 that described pressure regulating cavity 25 can move axially, described pressure regulation valve rod 10 coordinates in inserting close fit or departing to insert with the inlet opening of pressure regulating cavity 25, equipped adjusting pressuring knob 11 on pressure regulation valve rod 10 outer end.

When operation uses, the liquid with pressure is filled with in admission chamber 24, through in admission chamber 24 below cone valve 13 enter in hydrojet chamber 20 spray from shower nozzle 19 with the valve opening that is communicated with between hydrojet chamber 20, complete medicine liquid spray operation.When stopping spraying operation, the rotary motion of motor 3 is through driving gear 2, duplex intermediate gear 4, actuation gear 5 drives thread spindle 6 to rotate, and main shaft 9 is moved downwards, under upper jump ring 15 promotes, upper conical valve 12 is synchronously moved down with main shaft 9, open and be communicated with valve opening between admission chamber 24 with pressure regulating cavity 25, simultaneously under upward pressure spring 16 acts on, middle cone valve 13 moves down with main shaft 9, and valve bore closure will be communicated with between admission chamber 24 with hydrojet chamber 20, promote lower cone valve 14 when lower circlip 22 moves down with main shaft 9 to move down, open and be communicated with valve opening between hydrojet chamber 20 with pressure-releasing chamber 21, the pressure liquid remained in hydrojet chamber 20 is expelled back in liquid medicinal case from pressure-releasing chamber 21, avoid leaking from shower nozzle 19 or producing dribble.Position-limited lever 26 contacts with lower position switch 8, and motor 3 is stopped operating, and limits the lower pole location of main shaft 9.Several control valves are installed in parallel realize a few row spray liquid use time, when inciting somebody to action wherein part line number shower nozzle 19 and stopping spray liquid operation, by rotating the adjusting pressuring knob 11 stopping operation capable, pressure regulation valve rod 10 is regulated to be communicated with the open degree of valve opening with between admission chamber 24 and pressure regulating cavity 25, the hydrojet pressure of other row shower nozzles 19 in spraying operation can being ensured, realizing along separate routes with pressing regulable control.

Claims (1)

1. a spray liquid quick pressure releasing and the same pressure control valve of shunt, it is characterized in that: admission chamber (24), hydrojet chamber (20), pressure-releasing chamber (21) and pressure regulating cavity (25) are set in valve body (23), described admission chamber (24) is communicated with pressure regulating cavity (25) with hydrojet chamber (20) respectively, and described hydrojet chamber (20) is communicated with pressure-releasing chamber (21), shower nozzle (19) is packed on valve body (23) lower side, and is communicated with hydrojet chamber (20), described valve body (23) lateral part, upper end is installed casing (27), mounting plate (1), upper limit position switch (7) and lower position switch (8) are packed in casing (27), motor (3) is packed on mounting plate (1), duplex intermediate gear (4) and thread spindle (6) is rotating is arranged on mounting plate (1), described motor (3) and thread spindle (6) are fixedly mounted with driving gear (2) and actuation gear (5) respectively, described driving gear (2) engages with duplex intermediate gear (4), duplex intermediate gear (4) engages with actuation gear (5), the inserting that main shaft (9) can move axially up and down is in valve body (23), on described main shaft (9) upper end portion, be positioned at casing (27) inside and be fixedly mounted with position-limited lever (26), described position-limited lever (26) and upper and lower limit bit switch (7,8) are in contacting or disengaging cooperation, described main shaft (9) can be set with upper conical valve (12) from top to bottom successively in axial sliding, middle cone valve (13) and lower cone valve (14), described upper conical valve (12) and middle cone valve (13) are positioned at feed liquor case (24), upper conical valve (12) and admission chamber (24) and pressure regulating cavity (25) are communicated with valve opening in contacting close fit, middle cone valve (13) and admission chamber (24) and hydrojet chamber (20) are communicated with valve opening in contacting close fit, described lower cone valve (14) is positioned at pressure-releasing chamber (21), and be communicated with valve opening in contacting close fit with hydrojet chamber (20) and pressure-releasing chamber (21), upper jump ring (15), middle jump ring (17) and lower circlip (22) are packed on main shaft (9) from top to bottom successively, described upper jump ring (15) is positioned at upper conical valve (12) top, middle jump ring (17) is arranged in cone valve (13) below, lower circlip (22) is positioned at lower cone valve (14) top, upward pressure spring (16) is sleeved on main shaft (9), described upward pressure spring (16) upper, lower end contacts with middle cone valve (13) with upper conical valve (12) respectively and coordinates, in described pressure-releasing chamber (21), be positioned at the equipped downforce spring (18) in lower cone valve (14) downside, described downforce spring (18) lower end is in the upper axially locating of pressure-releasing chamber (21), downforce spring (18) upper end contacts with lower cone valve (14) and coordinates, the equipped pressure regulation valve rod (10) that described pressure regulating cavity (25) can move axially, described pressure regulation valve rod (10) coordinates in inserting close fit or departing to insert with the inlet opening of pressure regulating cavity (25), equipped adjusting pressuring knob (11) on pressure regulation valve rod (10) outer end.