CN206889226U - Power spraye and membrane pump - Google Patents

Abstract

The utility model discloses power spraye and membrane pump,Including motor,It is arranged on the pump head of motor output shaft side,For the water inlet pipe to be supplied water into pump head,With the outlet pipe connected inside pump head,The pressure release reflux being arranged on pump head,Pressure release reflux includes pressure release shell,The pressure-releasing chamber being arranged on pressure release shell,The bottom of the opening protrusion pressure-releasing chamber of relief hole is provided with sealing ring,Pressure-releasing chamber opening is set,The opening of the pressure-releasing chamber is provided with the diaphragm for pressure-releasing chamber and relief hole to be sealed,The pressure regulating cover of the opening for diaphragm to be fixed on to pressure-releasing chamber is provided with pressure-releasing chamber,The governor motion for adjusting pressure between diaphragm and relief hole is provided between pressure regulating cover and diaphragm,Its drip irrigation device is the device by setting Stress control decoction to be back to spray tank,Main function is that solve the problems, such as that pulvis precipitates in use after being mixed with water,Decoction is back to spray tank and plays immixture,Ensure that medicine is well mixed with water.

Description

Power spraye and membrane pump

Technical field

Membrane pump is the utility model is related to, more particularly to a kind of power spraye and membrane pump.

Background technology

Membrane pump is a kind of New type water pump.With the pump housing, it is provided with the pump housing into water valve opening and water exit valve hole.In water intaking valve Hole and water exit valve hole are respectively arranged with water intaking valve and outlet valve, water inlet valve opening and water exit valve hole the both sides pump housing on be provided with into Water pipe and outlet pipe, the water intaking valve and outlet valve are made up of valve body, valve ball and cross backing pin, the backing pin and valve ball bullet Property contact；Superpressure automatic pressure relief device is additionally provided with the pump housing.

China Patent Publication No. is that CN201606227U patent discloses a kind of high-efficient sprayer membrane pump, including electricity Machine, pump head and pressure regulation reflux, motor connect pump head with support through fixed mount, and described pressure regulation reflux is opened including backflow The fixed column of Guan Ti, water sealing slice and water sealing slice retainer plate in backflow switch body, connection water sealing slice and retainer plate, and Flow back switch spring and backflow valve block, water sealing slice and pump head contact position is provided with pressure port and relief hole, in use, working as pump head When interior hydraulic pressure is larger, water can come out from pressure port and promote water sealing slice finally to be flowed out from relief hole, play decompression protection barrier film The purpose of pump, still, because water sealing slice is softer, while pressure port and water sealing slice contact area are smaller, therefore the water in pressure port When pressure is smaller also not up to need the state of pressure release, it also may be such that water sealing slice deforms upon and then allows water to be flowed away from relief hole, shadow Ring normal use.

Utility model content

In view of the deficienciess of the prior art, the first purpose of the present utility model is to provide a kind of membrane pump, during use Water is not easy the aerial drainage when pressure is smaller.

Above-mentioned first purpose of the present utility model technical scheme is that：A kind of membrane pump, including Motor, the pump head for being arranged on motor output shaft side, the water inlet pipe for being supplied water into pump head, the water outlet with being connected inside pump head The pressure release reflux manage, being arranged on pump head, the pressure release reflux include pressure release shell, the pressure release being arranged on pressure release shell Chamber, the pressure-releasing chamber bottom be provided with for will be connected with pressure-releasing chamber inside pump head pressure port, for by pressure-releasing chamber and pressure release The relief hole of shell ft connection, the bottom of the opening protrusion pressure-releasing chamber of the relief hole are provided with sealing ring, the pressure-releasing chamber Opening is set, and the opening of the pressure-releasing chamber is provided with the diaphragm for pressure-releasing chamber and relief hole to be sealed, the pressure-releasing chamber On be provided with the pressure regulating cover of opening for diaphragm to be fixed on to pressure-releasing chamber, be provided with and be used between the pressure regulating cover and diaphragm Adjust the governor motion of pressure between diaphragm and relief hole.

Pass through above-mentioned technical proposal, in use, pump head is absorbed water under the driving of motor by water inlet pipe, after being then pressurized from Outlet pipe sprays, meanwhile, a part of water will be entered in pressure-releasing chamber by pressure port, because water outlet pipe part hydraulic pressure is small, so water will Water all will spray from outlet pipe after relief hole fills up, and when outlet pipe is closed, the water come in from water inlet pipe will remain in pump Cause the pressure increase inside pump head in head, when pressure increases to a certain extent, the water of these high pressures will be gushed by pressure port Enter in pressure-releasing chamber so that the volume increase of water between pressure-releasing chamber and diaphragm, and then cause diaphragm to away from the deformation of pressure-releasing chamber side, when Diaphragm deformation to a certain extent when, diaphragm will be gradually disengaged with sealing ring so that relief hole connects with pressure-releasing chamber, at this moment pressure-releasing chamber In water will be flowed out from relief hole, play a part of pressure release.When water pushes diaphragm open, due to sealing ring protrusion pressure-releasing chamber bottom Portion, so will be contacted when diaphragm contacts with sealing ring with the end of sealing ring, side wall, contact area is big, so diaphragm and sealing Sealing property between circle is preferable, is not susceptible to drainage, simultaneously as when water pushes diaphragm open from sealing ring, water needs First pressure-releasing chamber to be full of, then whole diaphragm be deformed upon, so promote pressure during diaphragm deformation larger, therefore can Diaphragm and then the situation generation to be flowed away by relief hole are promoted to avoid allowing for water to a certain extent when hydraulic pressure is inadequate.

Preferably, the diaphragm edge is provided with convex edge, and the edge of opening of the pressure-releasing chamber is provided with for matching somebody with somebody with convex edge The fixing groove of conjunction.

Pass through above-mentioned technical proposal, it is not easy to depart from from the opening of pressure-releasing chamber in deformation in order that obtaining diaphragm, while In order to facilitate diaphragm is changed, the edge of diaphragm is provided with convex edge, fixing groove, installation diaphragm are provided with around the opening of pressure-releasing chamber When so that convex edge is caught in fixing groove, in use, by pressure regulating cover by convex edge tightly in fixing groove.

Preferably, pressure-releasing chamber bottom is protruded in the pressure-releasing chamber and is provided with lattice block, the lattice block and film contact end For arc surface, the height of the lattice block is less than the height of sealing ring protrusion pressure-releasing chamber bottom.

Pass through above-mentioned technical proposal, during due to diaphragm is pressed on sealing ring, diaphragm is easily poked by sealing ring, therefore Lattice block is provided with pressure-releasing chamber, in use, diaphragm first with sealing ring contradict so that diaphragm deforms upon, rear film will Dative block contradicts, and prevents lattice block from continuing deformation, and protection diaphragm is not easy to be poked by sealing ring.

Preferably, the governor motion includes being arranged between pressure regulating cover and diaphragm the pressure being pressed on convex edge in fixing groove Cover, be slidably arranged in be used in the middle part of gland push against diaphragm so that diaphragm relief hole is sealed pushing block, be located on pressure regulating cover and use In the regulating bolt for promoting pushing block, the thrust spring being arranged between regulating bolt and pushing block.

Pass through above-mentioned technical proposal, in order to according to using needing to adjust pressure size when needing pressure release, pressure regulating cover with Gland is provided between diaphragm, diaphragm is pressed in fixing groove by gland, is then slided in the middle part of gland and is provided with pushing block, Thrust spring is promoted to pushing block side by regulating bolt during use, then thrust spring will promote pushing block to compress diaphragm, work as film Piece by the pressure of water it is larger when, diaphragm by promote pushing block slided in gland, and then cause thrust spring compressed；Need to change When becoming hydraulic pressure when pushing diaphragm open, regulating bolt is rotated so that at this moment regulating bolt is adjusted to diaphragm side or away from diaphragm lateral movement Section bolt will promote thrust spring to cause thrust spring to promote pushing block to diaphragm side or away from diaphragm lateral movement, will so cause film The thrust of the thrust spring that piece is subject to becomes big or diminished, and then changes the pressure of water when promoting motion of membrane, letter during regulation Folk prescription is just.

Preferably, the pushing block is set fluted towards regulating bolt end, is set between the regulating bolt and thrust spring Push pedal is equipped with, the rotation slot for regulating bolt insertion is provided with the push pedal, the end of the regulating bolt is located at rotation slot In, described thrust spring one end contradicts the other end with bottom portion of groove and contradicted with push pedal, and side wall and the recess sidewall of the push pedal are pasted Close.

Pass through above-mentioned technical proposal, it is not easy to turn down when compressed in order that obtaining thrust spring, is provided with pushing block recessed Groove, in use, thrust spring will contradict in the grooves and with the bottom of groove, set between regulating bolt and thrust spring There is push pedal, rotation slot is provided with push pedal, the end of thrust spring is located in rotation slot, so, and when rotating regulating bolt, regulation Bolt will gradually promote push pedal to promote thrust spring or push pedal gradually will be come out from groove to inside grooves so that thrust bullet Spring increases or reduced to the elastic force of pushing block, and then changes the pressure that pushing block pushes away diaphragm, simultaneously so that the side wall of push pedal and groove Fitting can cause push pedal to be not easy to deflect during exercise so that thrust spring is conveniently compressed in push pedal.

Preferably, the push pedal is provided with projection towards groove ends, and the thrust spring is set in the projection.

Pass through above-mentioned technical proposal, it is not easy to separate with thrust spring in motion in order that obtaining push pedal, is set in push pedal There is projection, in use, thrust spring is set in projection, such push pedal during exercise, will connect with thrust spring end all the time Connect.

Preferably, the chimb of restricted pushing block sliding scale on gland is set on the pushing block.

Pass through above-mentioned technical proposal, it is not easy to be subject to crushing when being pressed in pressure-releasing chamber in order that obtaining diaphragm, on pushing block Be provided with chimb, chimb will contradict with gland after pushing block so is promoted into certain depth into pressure-releasing chamber, prevent pushing block continue to Moved in pressure-releasing chamber, protection diaphragm is not easy to be subject to crushing.

Preferably, the water inlet pipe is arranged on the pressure release shell.

Pass through above-mentioned technical proposal, in order to conveniently repair water inlet pipe when intaking blockage, water inlet pipe is arranged on pressure release On shell, when so needing repairing, directly the dismounting of pressure release shell can be repaired, meanwhile, water inlet pipe is arranged on pressure release shell can be with The occupied space of pump head is reduced, facilitates pump head to have larger space to carry out water.

Preferably, the pressure release shell is provided with water containing chamber with pump head connection end, and the water inlet pipe connects with water containing chamber, described The water sucking mouth connected with water containing chamber is provided with pump head, the backflow being connected for pressure port with pump head is provided with the water containing chamber Manage, the return port connected with return duct is provided with the pump head.

Pass through above-mentioned technical proposal, in order that the water obtained in water inlet pipe enters in pump head, Rong Shui is provided with pressure release shell Chamber, in use, the water in the external world is introduced into water containing chamber by water inlet pipe, the water in water containing chamber enters pump head by water sucking mouth afterwards In, sprayed after water in pump head is pressurized from outlet pipe, when outlet pipe is closed, the water in pump head was met return port and entered back In flow tube, then flowed out from pressure port, diaphragm is promoted so that gone out from the water of pressure port outflow from relief hole, using simple It is convenient, it is compact-sized.

Second purpose of the present utility model is to provide a kind of power spraye, and decoction during use in sprayer can return It is stirred in the presence of the pressure relief water of stream, effectively avoids decoction lamination.

Above-mentioned second purpose of the present utility model technical scheme is that：A kind of electric atomizing Device, including the membrane pump described in above-mentioned technical proposal, in addition to sprayer body, the spray lance for spraying, the water inlet pipe, Relief hole is connected with sprayer, and the outlet pipe is connected with spray lance.

Pass through above-mentioned technical proposal, sprayed in use, the water two when outlet pipe is closed in pump head is entered by relief hole Device body bottom portion, due to larger by the hydraulic pressure of relief hole, so these water will be from sprayer body bottom by sprayer body In water blow so that the rolling of water in sprayer body, the decoction in such sprayer body will mix more uniform, make It is not easy to cause the decoction in sprayer that lamination occurs in, in use, decoction is inhaled into inside pump head by water inlet pipe, so Sprayed by outlet pipe, will be sprayed afterwards by the decoction of outlet pipe by spray lance afterwards, when spray lance is closed, pump head Work on so that the hydraulic pressure increase in pump head, when hydraulic pressure exceedes normal work setting value, pass through the decoction of water inlet pipe suction It will be discharged to by relief hole in sprayer body so that the decoction mixing in sprayer body is more uniform.

In summary, the utility model having the beneficial effect that in contrast to prior art：By setting sealing ring permissible Decoction in pump head is not easy to reveal from relief hole when pressure is inadequate, while can be by setting sealing ring can be by letting out The pressure increase of the water of hole discharge is pressed, can so play the more preferable stirring action of the decoction pushed away in sprayer body.

Brief description of the drawings

Fig. 1 is the structural representation of embodiment one；

Fig. 2 is the explosive view of embodiment one；

Fig. 3 is the explosive view of the pressure regulating cover of embodiment one, mainly protrudes governor motion；

Fig. 4 is the partial sectional view of embodiment one, the structure of main prominent governor motion；

Fig. 5 is the structural representation of the pressure release shell of embodiment one；

Fig. 6 is the partial sectional view of the pressure release shell of embodiment one；

Fig. 7 is the zoomed-in view at A in Fig. 2；

Fig. 8 is the structural representation of embodiment two.

Reference：1st, motor, 2, pump head；3rd, water inlet pipe；4th, outlet pipe；5th, pressure release reflux；511st, pressure release shell； 512nd, pressure-releasing chamber；6th, pressure port；7th, relief hole；8th, sealing ring；9th, diaphragm；10th, pressure regulating cover；11st, governor motion；1111st, gland； 1112nd, pushing block；1113rd, regulating bolt；1114th, thrust spring；12nd, convex edge；13rd, fixing groove；14th, lattice block；15th, groove；16、 Push pedal；17th, rotation slot；18th, it is raised；19th, chimb；20th, water containing chamber；21st, water sucking mouth；22nd, return duct；23rd, return port；24th, spray Day with fog body；25th, spray lance；26th, inlet opening；27th, discharge line.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

This specific embodiment is only that it is not to limitation of the present utility model, ability to explanation of the present utility model Field technique personnel can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but As long as all protected in right of the present utility model by Patent Law.

Embodiment one：As shown in Figure 1, 2, a kind of membrane pump, including motor 1, be arranged on the output shaft side of motor 1 pump head 2, The water inlet pipe 3 that is connected with pump head 2, the outlet pipe 4 connected with the inside of pump head 2, the pressure release reflux 5 being arranged on pump head 2, make Used time, the drive pump head 2 of motor 1 are worked, and pump head 2 will be absorbed water by water inlet pipe 3 from the external world, and these water enter in pump head 2 by adding Discharged after pressure by outlet pipe 4, when outlet pipe 4 is closed, the hydraulic pressure increase in pump head 2, when hydraulic pressure increases to a certain extent, These water will carry out aerial drainage by pressure release reflux 5.

As shown in Figure 4,5, wherein, pressure release reflux 5 includes pressure release shell 511, the pressure-releasing chamber being arranged on pressure release shell 511 512, pressure-releasing chamber 512 is circular cylindrical cavity, and side hollow out opening of the pressure-releasing chamber 512 away from pump head 2 is set, at the bottom of pressure-releasing chamber 512 Portion is provided with pressure port 6, relief hole 7, and pressure port 6 connects pump head 2 with pressure-releasing chamber 512, and discharge line is communicated with relief hole 7 27, pressure-releasing chamber 512 is in communication with the outside by relief hole 7 by discharge line 27, and the opening of relief hole 7 is provided with sealing ring 8, Sealing ring 8 protrudes the bottom of pressure-releasing chamber 512 and set, and the opening of pressure-releasing chamber 512 is provided with diaphragm 9, while in pressure-releasing chamber 512 Openend is provided with pressure regulating cover 10, and diaphragm 9 is pressed on the opening of pressure-releasing chamber 512 by pressure regulating cover 10 during use, in pressure regulating cover Governor motion 11 is set, and governor motion 11 promotes the deformation into pressure-releasing chamber 512 of diaphragm 9 so that diaphragm 9 will between 10 and diaphragm 9 The opening of relief hole 7 and pressure-releasing chamber 512 seals.

During work, current enter in pump head 2 by water inlet pipe 3 and then discharged from outlet pipe 4, when outlet pipe 4 is closed, pump Hydraulic pressure increase in first 2, the water of these high pressures will be entered diaphragm 9 in pressure-releasing chamber 512 by pressure port 6 gradually to away from sealing Enclose the promotion of 8 sides so that diaphragm 9 gradually has space between sealing ring 8, and the water being so located in pressure-releasing chamber 512 will pass through film Space between piece 9 and sealing ring 8, which enters in relief hole 7, discharges, and reaches the purpose of pressure release.

As shown in Figure 2,4, wherein, governor motion 11 includes gland 1111, the cunning being arranged between pressure regulating cover 10 and diaphragm 9 The dynamic pushing block 1112 for being arranged on the middle part of gland 1111, the regulating bolt 1113 being located on pressure regulating cover 10, it is arranged on regulating bolt Thrust spring 1114 between 1113 and pushing block 1112, in use, the surrounding of diaphragm 9 is pressed on into pressure-releasing chamber by gland 1111 512 opening, a through hole is then offered at the middle part of gland 1111, pushing block 1112 is slidably arranged in through hole, and Thrust spring 1114, screw thread between regulating bolt 1113 and pressure regulating cover 10 are installed between pushing block 1112 and regulating bolt 1113 Coordinate, by rotating regulating bolt 1113, regulating bolt 1113 can be caused to the lateral movement of pushing block 1112 so that diaphragm 9 compresses Relief hole 7 is sealed at relief hole 7.

As shown in Figure 3,4, wherein, a circle chimb 19 is provided with around pushing block 1112, is pushed away by thrust spring 1114 When dynamic pushing block 1112 slides into certain depth into pressure-releasing chamber 512, the chimb 19 on pushing block 1112 will contradict with gland 1111, hinder Thrust block 1112 continues to continue to slide into pressure-releasing chamber 512, and protection diaphragm 9 is not easy to be damaged by pressure by pushing block 1112.

Need to adjust current when pushing the pressure of diaphragm 9 open, rotate regulating bolt 1113, regulating bolt 1113 will be to close to pushing away Block 1112 or the end motion away from pushing block 1112, the at this moment thrust spring between pushing block 1112 and regulating bolt 1113 1114 will be compressed into different length with the motion of regulating bolt 1113 so that thrust spring 1114 applies to pushing block 1112 Larger or smaller elastic force, pushing block 1112 will be in the presence of different elastic force to the internal slide of pressure-releasing chamber 512 or to pressure-releasing chamber 512 slide outsides, therefore the deformation of different amplitudes will occur for the diaphragm 9 contacted with pushing block 1112, when pushing block 1112 is to pressure-releasing chamber During 512 internal slide, larger deformation occurs for diaphragm 9, while the elastic force of thrust spring 1114 is larger, it is therefore desirable to during aerial drainage, Need to promote diaphragm 9 to 512 outer deformation of pressure-releasing chamber from outflow water at pressure port 6, diaphragm 9 to pressure-releasing chamber 512 it is outer when thrust spring 1114 will gradually be compressed, because the pressure of thrust spring 1114 is larger, it is therefore desirable to push open diaphragm 9 hydraulic pressure be also required to compared with Greatly, on the contrary, when pushing block 1112 is to 512 slide outside of pressure-releasing chamber, less deformation occurs for diaphragm 9, it is therefore desirable to pushes diaphragm 9 open When pressure will be smaller.It is simple and convenient during regulation, it is only necessary to turn regulating bolt 1113.

As shown in Figure 2,4, fluted 15 are set on pushing block 1112, thrust is promoted by regulating bolt 1113 for convenience Spring 1114, is provided with push pedal 16 between regulating bolt 1113 and thrust spring 1114, push pedal 16 be located in groove 15 and with The side wall of groove 15 is bonded, and thrust spring 1114 is located at one end in groove 15 to be supported with the bottom of the groove 15 conflict other end with push pedal 16 Touch, rotation slot 17 is provided with push pedal 16, regulating bolt 1113 will rotate when rotating in rotation slot 17.Meanwhile rotate and adjust When saving bolt 1113, regulating bolt 1113 will promote push pedal 16 to be slided in groove 15 so that the thrust spring in groove 15 1114 are compressed into different length.

As shown in Fig. 2,7, wherein, the edge of diaphragm 9 is provided with convex edge 12, is provided with the edge of opening of pressure-releasing chamber 512 Fixing groove 13, when diaphragm 9 is installed, first convex edge 12 is inserted in fixing groove 13, be then pressed on diaphragm 9 by gland 1111 solid Determine in groove 13, so, when diaphragm 9 deforms upon, diaphragm 9 will depart from from the opening of pressure-releasing chamber 512.

As shown in Figure 2,6, wherein, lattice block 14 is provided with pressure-releasing chamber 512, lattice block 14 protrudes pressure-releasing chamber 512 Bottom is set, and lattice block 14 and the contact jaw of diaphragm 9 is arranged into arc surface, while cause the height of lattice block 14 to be less than sealing ring The height of 8 protrusion pressure-releasing chamber 512 bottoms, when can so make it that diaphragm 9 is deformed upon by the promotion of pushing block 1112, is not easy so that film The deformation quantity of piece 9 exceedes the largest deformation amount of diaphragm 9, and protection diaphragm 9 is hardly damaged.

As shown in figure 4, wherein, the end of groove 15 is provided with projection 18 in push pedal 16, in use, thrust spring 1114 One end is contradicted in the bottom of groove 15, and the other end is set in projection 18 and contradicted with push pedal 16.

As shown in figure 3, manufacture and maintenance for convenience, water inlet pipe 3 is arranged on pressure release shell 511.

As shown in Fig. 2,5, wherein, pressure release shell 511 and the connection end of pump head 2 are provided with water containing chamber 20, the direction of water containing chamber 20 Pump head 2 is set, and will be connected between water inlet pipe 3 and water containing chamber 20 by inlet opening 26, while be provided with water sucking mouth on pump head 2 21, water sucking mouth 21 is used for, by inside the water suction pump head 2 in water containing chamber 20, return duct 22 being provided with water containing chamber 20, in pump Return port 23 is provided with first 2, return duct 22 connects pressure port 6 with return port 23 so that the convenient warp of water under high pressure in pump head 2 Water containing chamber 20 is crossed to enter in pressure port 6.

During work, pump head 2 is worked, and pump head 2 will be absorbed water by water inlet pipe 3, and the water come in by water inlet pipe 3 will be flowed into appearance In water cavity 20, the water in water containing chamber 20 will be entered inside pump head 2 by water sucking mouth 21, then be gone out from outlet pipe 4, be worked as outlet pipe 4 when blocking, the hydraulic pressure increase in pump head 2, and at this moment the water in pump head 2 will enter pressure port by return port 23 by return duct 22 In 6, diaphragm 9 will be promoted into the water in pressure port 6 so that relief hole 7 is opened, and then flow to discharge pipe from relief hole 7 Road 27, flow out to afterwards outside pressure-releasing chamber 512.

Embodiment two：As shown in figure 8, a kind of power spraye, includes the membrane pump of above-mentioned technical proposal, in addition to spray Device body 24, spray lance 25, wherein, water inlet pipe 3, relief hole 7 connect with sprayer body 24, and relief hole 7 passes through discharge pipe Road 27 is connected with sprayer body, and outlet pipe 4 is connected with spray lance 25.

In use, barrier film pump work, draws decoction, decoction is entered by pump head 2 by water inlet pipe 3 from sprayer body 24 Enter outlet pipe 4 and then sprayed by spray lance 25, when spray lance 25 is closed, the hydraulic pressure increase in pump head 2 so that pump head Water in 2 enters in sprayer body 24 to the medicine in sprayer body 24 by relief hole 7 and then again by discharge line 27 Liquid is stirred.

The above is only exemplary embodiment of the present utility model, not for limitation the scope of protection of the utility model, The scope of protection of the utility model is determined by appended claim.

Claims (10)

1. a kind of membrane pump, including motor (1), it is arranged on the pump head (2) of motor (1) output shaft side, for being supplied into pump head (2) The water inlet pipe (3) of water, the outlet pipe (4) connected internal with pump head (2), the pressure release reflux (5) being arranged on pump head (2), It is characterized in that：The pressure release reflux (5) includes pressure release shell (511), the pressure-releasing chamber (512) being arranged on pressure release shell (511), Pressure-releasing chamber (512) bottom be provided with for will be connected with pressure-releasing chamber (512) inside pump head (2) pressure port (6), for general The relief hole (7) of pressure-releasing chamber (512) and pressure release shell (511) ft connection, the opening protrusion pressure-releasing chamber of the relief hole (7) (512) bottom is provided with sealing ring (8), and pressure-releasing chamber (512) opening is set, and the opening of the pressure-releasing chamber (512) is set The diaphragm (9) for pressure-releasing chamber (512) and relief hole (7) to be sealed is equipped with, is provided with the pressure-releasing chamber (512) for inciting somebody to action Diaphragm (9) is fixed on the pressure regulating cover (10) of the opening of pressure-releasing chamber (512), is set between the pressure regulating cover (10) and diaphragm (9) There is the governor motion (11) for pressure between adjusting film piece (9) and relief hole (7).

2. membrane pump according to claim 1, it is characterized in that：Diaphragm (9) edge is provided with convex edge (12), described to let out The edge of opening of pressure chamber (512) is provided with the fixing groove (13) for coordinating with convex edge (12).

3. membrane pump according to claim 1, it is characterized in that：Protrusion pressure-releasing chamber (512) bottom in the pressure-releasing chamber (512) Lattice block (14) is provided with, the lattice block (14) and diaphragm (9) contact jaw are arc surface, and the height of the lattice block (14) is small Height in sealing ring (8) protrusion pressure-releasing chamber (512) bottom.

4. membrane pump according to claim 2, it is characterized in that：The governor motion (11) includes being arranged on pressure regulating cover (10) Between diaphragm (9) by gland (1111) that convex edge (12) are pressed in fixing groove (13), be slidably arranged in gland (1111) Portion be used to push against diaphragm (9) so that diaphragm (9) by pushing block (1112) that relief hole (7) seals, be located on pressure regulating cover (10) and use In the regulating bolt (1113) for promoting pushing block (1112), the thrust bullet being arranged between regulating bolt (1113) and pushing block (1112) Spring (1114).

5. membrane pump according to claim 4, it is characterized in that：The pushing block (1112) sets towards regulating bolt (1113) end Groove (15) is equipped with, push pedal (16), the push pedal are provided between the regulating bolt (1113) and thrust spring (1114) (16) rotation slot (17) for regulating bolt (1113) insertion is provided with, the end of the regulating bolt (1113) is positioned at rotation In groove (17), described thrust spring (1114) one end contradicts the other end with groove (15) bottom and contradicted with push pedal (16), described to push away The side wall of plate (16) is bonded with groove (15) side wall.

6. membrane pump according to claim 5, it is characterized in that：The push pedal (16) is provided with projection towards groove (15) end (18), the thrust spring (1114) is set on raised (18).

7. membrane pump according to claim 4, it is characterized in that：Restricted pushing block (1112) is set on the pushing block (1112) The chimb (19) of sliding scale on gland (1111).

8. membrane pump according to claim 1, it is characterized in that：The water inlet pipe (3) is arranged on the pressure release shell (511) On.

9. membrane pump according to claim 8, it is characterized in that：The pressure release shell (511) is provided with pump head (2) connection end Water containing chamber (20), the water inlet pipe (3) connect with water containing chamber (20), are provided with the pump head (2) and are connected with water containing chamber (20) Water sucking mouth (21), be provided with the return duct (22) being connected for pressure port (6) with pump head (2) in the water containing chamber (20), it is described The return port (23) connected with return duct (22) is provided with pump head (2).

10. a kind of power spraye, it is characterized in that：Including the membrane pump described in claim 1 ~ 9 any one, in addition to spraying Device body (24), the spray lance (25) for spraying, the water inlet pipe (3), relief hole (7) connect with sprayer, it is described go out Water pipe (4) is connected with spray lance (25).