CN214987292U - A plastic recoverable spraying pump for high consistency liquid - Google Patents

Abstract

The utility model relates to a recoverable spraying pump of plastic for high consistency liquid, relate to the field of spraying pump technique, it includes pump case and pump head subassembly, the pump head subassembly includes first piston head, the second piston head, extrusion lid and pump core, be provided with the air cavity of storage gas and the liquid cavity of storage liquid in the pump case, be provided with the spray tube in the extrusion lid, gear shift block and nozzle plate, the gear shift hole has been seted up on the gear shift block, the spray tube forms the liquid passage that supplies liquid flow with the pump core intercommunication, set up the opening that whether control liquid passage communicates with the liquid cavity on the pump core, form the first air flue that communicates with the air cavity between pump core and the first piston head, be provided with the second air flue that communicates with first air flue in the extrusion lid, second air flue and gear shift hole intercommunication, first air flue is provided with the pneumatic valve assembly that control both communicate with the air cavity junction. This application has the effect that makes the liquid of high concentration consistency can carry out better atomization treatment.

Description

A plastic recoverable spraying pump for high consistency liquid

Technical Field

The application relates to the field of spray pump technology, in particular to an all-plastic recyclable spray pump for high-consistency liquid.

Background

The spray pump is a tool for atomizing liquid in bottled liquid, and has good application in the cosmetic industry, agriculture and living goods.

The related art spray pump pumps the liquid in the bottled liquid connected to the spray pump into the spray pump by internal negative pressure treatment, and then sprays the finally ejected liquid by internal treatment of the spray pump.

In view of the above-mentioned related technologies, the inventor believes that the spray pump on the market can convert the liquid into mist better when processing the liquid with low concentration, but when processing the liquid with high concentration, the atomization effect of the liquid is poor, and needs to be improved.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that the atomizing effect of spray pump is not good to high consistency liquid, the application provides a recoverable spray pump of plastic for high consistency liquid.

The application provides a plastic recoverable spraying pump for high consistency liquid adopts following technical scheme:

an all-plastic recyclable spray pump for high-consistency liquid comprises a pump shell, a pump head assembly and a connecting shell used for being connected with bottled liquid, wherein the pump head assembly comprises a first piston head and a second piston head, the first piston head axially slides in the pump shell and is enclosed with the inside of the pump shell to form an air cavity, the second piston head axially slides in the pump shell and is enclosed with the inside of the pump shell to form a liquid cavity, the lower end of the liquid cavity is provided with a liquid one-way valve enabling liquid to flow to the liquid cavity, the pump head assembly further comprises a squeezing cover and a pump core, the bottom of the squeezing cover is abutted against the first piston head, a spraying pipe communicated with the pump core is arranged on the squeezing cover, a liquid channel for liquid to flow is formed between the spraying pipe and the pump core, a speed change block connected with the spraying pipe is arranged on the squeezing cover, and a spraying sheet for atomizing the liquid is arranged on the outer side wall of the speed change block, the variable speed block is provided with a variable speed hole communicated with the liquid channel, the variable speed hole is communicated with the interior of the spray sheet, the pump core is provided with a circulation hole communicated with the liquid channel, the second piston head is arranged on the outer surface of the pump core, the pump core is provided with a first station and a second station, when the pump core is positioned at the first station, the second piston head covers the opening of the circulation hole, when the pump core is positioned at the second station, the circulation hole is communicated with the liquid cavity, the outer side wall of the pump core is provided with a support table, a driving assembly is clamped between the support table and the bottom surface of the air cavity, the driving assembly comprises a spring block which extends and retracts along the axial direction of the air cavity, a first air channel which is used for air to flow and is communicated with the air cavity is formed between the pump core and the second piston head, the extrusion cover is provided with a second air channel communicated with the first air channel, the second air channel is communicated with the variable speed hole, and the support table is provided with an air valve assembly, the air valve assembly comprises a first one-way air valve plate for controlling whether a first air channel is communicated with an air cavity or not, the air flow direction of the first one-way air valve plate is from the air cavity to the first air channel, an air inlet communicated with the outside is formed in a first piston head, the air inlet is communicated with the air cavity, the air valve assembly further comprises a second one-way air valve plate for controlling whether the air inlet is communicated with the air cavity or not, and the air flow direction of the second one-way air valve plate is from the air inlet to the air cavity.

By adopting the technical scheme, the bottled liquid can be connected with the spray pump through the connecting shell, the pump shell is inserted into the bottled liquid, the pressing cover is pressed downwards when spraying is needed, the first piston head is pressed by the bottom of the pressing cover to enable the first piston head to slide downwards, the air pressure in the air cavity is increased to open the first one-way air valve plate, the air in the air cavity can move into the first air channel, and the air moves to the speed change hole along the first air channel; at the same time when the first piston head moves downwards, the first piston head extrudes the support table to enable the pump core to move downwards, the support table extrudes the spring block to enable the spring block to be compressed, the pump core moves downwards to enable the pump core to be switched from a first station to a second station, the circulation hole is communicated with the liquid cavity, after extrusion force disappears, the spring block returns to the original state, the elastic block drives the pump core to move upwards to enable the inside of the liquid cavity to form negative pressure, at the moment, liquid in bottled liquid can be pumped into the liquid cavity and moved into the liquid channel through the circulation hole, liquid can be moved to the position of the speed changing hole through repeated action, and at the moment, gas and liquid are mixed to enable liquid with high consistency to be sprayed out of the spray sheet in a mist form; in the process that the spring block drives the pump core to move upwards, the first one-way air valve plate is closed, the air pressure inside the air cavity is smaller than the external air pressure, and the second one-way air valve plate is ejected to open, so that the external air can move into the air cavity, and the second piston head can be reset quickly.

Optionally, the driving assembly further includes a sealing ring, the sealing ring is disposed at one end of the air cavity close to the liquid cavity, and the spring block is clamped between the sealing ring and the supporting table.

Through adopting above-mentioned technical scheme, the setting up of sealing ring has improved the leakproofness of air cavity, makes the inside atmospheric pressure of air cavity change comparatively stably.

Optionally, the air valve assembly further comprises a fixing ring, and the fixing ring is inserted on the first piston head in an interference manner.

Through adopting above-mentioned technical scheme, solid fixed ring set up make the pneumatic valve subassembly comparatively stable on the brace table to it removes and can not play the condition emergence of controlling the gas circulation to reduce the brace table at the in-process first one-way pneumatic valve piece of removal and the one-way pneumatic valve piece of second.

Optionally, an outward-turned convex edge is arranged at the top of the pump shell, and a limit ring clamped with the convex edge is arranged on the inner side wall of the connecting shell.

Through adopting above-mentioned technical scheme, the spacing ring takes place with protruding along the condition that the joint shell carries out axial displacement with reducing the relative connection shell of pump case to reduce the condition that the pump case separates when connecting shell and bottled liquid and be connected, thereby has improved the stability of connecting the shell in the use.

Optionally, the pump core includes first montant and second montant, first montant axial runs through, the second montant is pegged graft in first montant, be provided with the fixed block with the butt of second montant in the first montant, the spray tube is pegged graft in the one end of keeping away from the second montant in first montant, the opening is seted up on the second montant.

Through adopting above-mentioned technical scheme, at the in-process that the pump core was extruded downwards to the extrusion lid, the second montant can move down under the effect of fixed block to it takes place to reduce the unmovable condition of in-process second montant that first montant moved down.

Optionally, a fixing portion clamped with the second piston head is arranged at one end, far away from the first vertical rod, of the second vertical rod.

Through adopting above-mentioned technical scheme, make the second montant can drive the second piston head through the fixed part and shift up at the in-process that shifts up to realize the inside negative pressure of liquid chamber.

Optionally, a balance hole is formed in the pump shell, and the balance hole is flush with the side wall of the second piston head.

By adopting the technical scheme, in the process of moving the second piston head downwards, the air pressure above the second piston head is gradually reduced, the air pressure below the second piston head is gradually increased, and at the moment, when the upper part of the second piston head is communicated with the balance hole, the air pressure above the second piston head is increased, so that the second piston head can move downwards conveniently.

Optionally, the outer side wall of the speed changing block is provided with an anti-rotation block, and the inner side wall of the spraying piece is provided with a clamping block clamped with the anti-rotation block.

Through adopting above-mentioned technical scheme, the cooperation of preventing changeing the piece and joint piece makes the gear change block comparatively stable in spouting the piece to reduce gaseous and liquid mixing back vortex that produces on spouting the piece and drive the gear change block and carry out the pivoted condition and take place, improved the stability of gear change block in the use.

Optionally, a protective cover is arranged on the connecting shell, and the extrusion cover is located in the protective cover.

By adopting the technical scheme, the arrangement of the protective cover enables the pressing cover not to be pressed when not used, so that the situation that the spraying pump presses the pressing cover to spray the atomized liquid when not used is reduced.

Optionally, the outer side wall of the connecting shell is provided with a first elastic limiting block, and the inner side wall of the protective cover is provided with a second elastic limiting block connected with the first elastic limiting block in a clamped mode.

Through adopting above-mentioned technical scheme, the joint of first elasticity stopper and second elasticity stopper makes the safety cover can fix with the connection shell to it drops and can not take place to the condition that the extrusion lid sheltered from the effect to reduce the safety cover at the in-process that uses from the connection shell, has improved the stability of safety cover in the use.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the gas-liquid mixing enables the liquid with high consistency to be better atomized, so that the liquid sprayed by the spray piece is overall in a fog shape;

2. the arrangement of the sealing ring improves the integral air tightness, so that the air pressure inside the spray pump changes more stably;

3. the protective cover can shield the extrusion cover when the spray pump is not used, so that the phenomenon that the extrusion cover is extruded by mistake to spray the spray is reduced.

Drawings

FIG. 1 is an exploded schematic view of an all plastic retrievable spray pump for liquids of high consistency according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of an all plastic retrievable spray pump for liquids of high consistency in accordance with an embodiment of the present application;

FIG. 3 is a schematic structural view of a liquid check valve according to an embodiment of the present application;

FIG. 4 is an enlarged view of portion A of FIG. 2;

FIG. 5 is a cross-sectional view of a pump housing and sprayer assembly of an embodiment of the present application;

FIG. 6 is an enlarged view of portion B of FIG. 5;

FIG. 7 is an exploded view of the shift block and the spray patch of the embodiment of the present application;

FIG. 8 is an enlarged view of portion C of FIG. 2;

FIG. 9 is an enlarged view of portion D of FIG. 2;

FIG. 10 is a schematic structural view of a pump cartridge, a support table, and a valve assembly of an embodiment of the present application;

FIG. 11 is an exploded view of a first piston head and valve assembly of an embodiment of the present application;

FIG. 12 is an exploded view of the coupling housing and protective shield of an embodiment of the present application;

FIG. 13 is a schematic view of the squeeze cap of the all plastic recyclable spray pump for liquids of high consistency of the present application when squeezed downward;

FIG. 14 is an enlarged view of section E of FIG. 13;

FIG. 15 is an enlarged view of portion F of FIG. 13;

FIG. 16 is a schematic view of the upwardly moving squeeze cap of the all plastic recyclable spray pump for liquids of high consistency in accordance with an embodiment of the present application;

fig. 17 is an enlarged view of a portion G in fig. 16.

Description of reference numerals: 1. a pump housing; 101. an upper circular ring block; 102. a lower circular ring block; 2. a liquid check valve; 201. a connecting portion; 202. a valve plate portion; 203. an elastic rod; 3. a second piston head; 301. a first ring portion; 302. a second ring portion; 303. a third ring portion; 4. a seal ring; 5. a spring block; 6. a pump core; 601. a first vertical bar; 602. a second vertical bar; 7. an air valve assembly; 701. a fixing ring; 702. a first one-way air valve plate; 703. a second one-way air valve plate; 8. a first piston head; 9. a spray assembly; 901. extruding a cover; 902. a nozzle; 903. a shift block; 904. spraying a sheet; 10. a connecting shell; 11. a protective cover; 12. a convex edge; 13. a limiting ring; 14. a snap ring groove; 15. a shift hole; 16. a spray nozzle; 17. forming a vortex block; 18. a rotation prevention block; 19. a clamping block; 20. a liquid channel; 21. a flow-through hole; 22. a fixed part; 23. a liquid chamber; 24. a fixed block; 25. a balance hole; 26. an air cavity; 27. a support table; 28. a first air passage; 29. a second air passage; 30. a gas vent; 31. an air inlet; 32. a first elastic limiting block; 33. and the second elastic limiting block.

Detailed Description

The present application is described in further detail below with reference to figures 1-17.

The embodiment of the application discloses an all-plastic recyclable spray pump for high-consistency liquid, and the parts adopted in the embodiment are all plastic in order to facilitate the subsequent treatment of the spray pump. Referring to fig. 1, the all plastic recyclable spray pump for high consistency liquid comprises a pump housing 1, a liquid check valve 2, a second piston head 3, a sealing ring 4, a spring block 5, a pump core 6, an air valve assembly 7, a first piston head 8, a spray assembly 9, a connecting housing 10 and a protective cover 11.

Referring to fig. 2 and 3, the pump casing 1 includes an upper ring block 101 and a lower ring block 102, the upper ring block 101 has an upward opening, a protrusion is formed on the bottom surface of the upper ring block 101 and is recessed into the upper ring block 101, an outward protruding edge 12 is integrally formed on the top edge of the upper ring block 101, the protruding edge 12 is perpendicular to the upper ring block 101, the lower ring block 102 penetrates through the lower ring block 102 along the length direction of the lower ring block 102, the lower ring block 102 is communicated with the protrusion of the upper ring block 101, and the upper ring block 101 and the lower ring block 102 are coaxially arranged. Liquid check valve 2 sets up in ring piece 102 down, liquid check valve 2 includes connecting portion 201, valve block portion 202 and elastic rod 203, the radial cross sectional shape of connecting portion 201 is ring and connecting portion 201 and the coaxial setting of ring piece 102 down, the lateral wall butt of connecting portion 201 in the inside wall of ring piece 102 down, the top an organic whole of connecting portion 201 is provided with outside turn-ups, turn-ups and lower ring piece 102 inside wall joint are in order to realize connecting portion 201 fixed in ring piece 102 down. The valve plate portion 202 is connected to the inner side wall of the connecting portion 201 through the elastic rod 203, the valve plate portion 202 blocks the inner channel of the lower circular ring block 102, the valve plate portion 202 has a first station and a second station, when the valve plate portion 202 is located at the first station, the valve plate portion 202 blocks the inner channel of the lower circular ring block 102, when the valve plate portion 202 is located at the second station, the valve plate portion 202 jacks up to enable the inner channel of the lower circular ring block 102 to circulate, and at the moment, external liquid can flow into the lower circular ring block 102.

Referring to fig. 2 and 4, the connection housing 10 is in the shape of a three-step ring, the connection housing 10 is disposed coaxially with the pump housing 1, the lower surface of the second step portion of the connection housing 10 abuts against the upper surface of the flange 12 of the connection housing 10, an internal thread is disposed inside the lowermost step portion of the connection housing 10 for connection with a bottled liquid, and when the connection housing 10 is connected with the bottled liquid, the lowermost end of the pump housing 1 is inserted into the bottled liquid. In order to reduce the situation that the connecting shell 10 and the pump shell 1 are separated in the process of mounting the connecting shell 10 and the bottled liquid, a limiting ring 13 is integrally formed on the side wall of the second step part of the connecting shell 10 in the circumferential direction, the limiting ring 13 abuts against the lower surface of the convex edge 12 to enable the convex edge 12 to be clamped in the connecting shell 10, and therefore the stability of connection of the connecting shell 10 and the pump shell 1 is improved.

Referring to fig. 5 and 6, the first piston head 8 is inserted into the upper ring block 101 and can slide along the axial direction of the upper ring block 101, so that the first piston head 8 isolates air at two ends of the upper ring block 101, the first piston head 8 has three step surfaces, and a clamping ring groove 14 is formed by protruding upwards on the second step surface of the first piston head 8. The spraying assembly 9 comprises a squeezing cover 901, a spraying pipe 902, a speed change block 903 and a spraying sheet 904, wherein the lower end of the squeezing cover 901 is abutted to a second step surface convex part of the first piston head 8, a certain gap is formed between the outer side wall of the squeezing cover 901 and the top of the connecting shell 10, the spraying pipe 902 is integrally formed in the squeezing cover 901, the inner part of the spraying pipe 902 is hollow for liquid to flow, the speed change block 903 is cylindrical, an opening facing to the direction of the spraying pipe 902 is formed in the speed change block 903, the speed change block 903 is sleeved on the outer surface of the spraying pipe 902, two symmetrical speed change holes 15 are formed in the inner side of the speed change block 903, when liquid moves from the inside of the spraying pipe 902 with a large hole diameter to the inside of the speed change hole 15 with a small hole diameter, the flow rate of the liquid can be increased, and liquid can be conveniently atomized.

Referring to fig. 6 and 7, spray piece 904 is fitted into squeeze cover 901 in an interference fit manner, and spray piece 904 has an opening facing transmission block 903, transmission block 903 is provided inside spray piece 904, and the end of spray piece 904 is brought into contact with the end of transmission block 903, and spray opening 16 through which liquid is sprayed is provided on the inner end face of spray piece 904, and spray opening 16 has a circular radial cross-sectional shape, and spray opening 16 is gradually reduced toward the outside, and spray opening 16 and spray piece 904 are provided coaxially. Two vortex forming blocks 17 are integrally formed on the inner end surface of the spray piece 904 in a centrosymmetric manner with the spray opening 16, and liquid can form vortex spray under the action of the vortex forming blocks 17 and is sprayed out from the spray opening 16. In order to stabilize the shift block 903 in the spray piece 904, two anti-rotation blocks 18 are symmetrically arranged on the outer side wall of the shift block 903, the anti-rotation blocks 18 are integrally formed with the shift block 903 and are arranged along the axial direction of the shift block 903, and a clamping block 19 for clamping the anti-rotation blocks 18 is integrally formed in the spray piece 904 so as to reduce the rotation of the shift block 903 in the spray piece 904.

Referring to fig. 2 and 8, the pump core 6 includes a first vertical rod 601 and a second vertical rod 602, the first vertical rod 601 and the second vertical rod 602 are both cylindrical, the first vertical rod 601 axially penetrates along the first vertical rod 601, the second vertical rod 602 is inserted into the first vertical rod 601 in an interference manner, the spray pipe 902 is inserted into the first vertical rod 601 in an interference manner at an end far away from the second vertical rod 602 in an interference manner, the second vertical rod 602 is inwardly recessed toward an end of the spray pipe 902, so that the pump core 6 and the spray pipe 902 form a liquid passage 20 for liquid to flow, a flow through hole 21 is formed in a side wall of the second vertical rod 602 at an end far away from the first vertical rod 601, and the radial cross-sectional shape of the flow through hole 21 is circular and the axis of the flow through hole 21 is perpendicularly intersected with the axis of the second vertical rod 602. The second piston head 3 is inserted in the lower ring block 102 and can slide along the axial direction of the lower ring block 102, so that the second piston head 3 isolates air at two ends of the lower ring block 102, the second piston head 3 comprises a first ring part 301, a second ring part 302 and a third ring part 303, the first ring part 301 and the third ring part 303 are respectively arranged at two sides of the second ring part 302, the second piston head 3 is integrally I-shaped, and the first ring part 301 is abutted against the inner side wall of the lower ring block 102. Keep away from the one end lateral wall circumference integrated into one piece of first montant 601 on second montant 602 and have fixed part 22, the one end of connecting second montant 602 on first montant 601 is seted up jaggedly, third ring portion 303 butt is in order to block up runner hole 21 in the lateral wall of second montant 602, the upper end of third ring portion 303 is pegged graft in the breach, the lower extreme and the fixed part 22 joint of third ring portion 303 to realize the fixed of second piston head 3.

The first vertical rod 601, the second piston head 3 and the liquid one-way valve 2 are matched to form a closed liquid cavity 23 used for storing liquid in the lower circular ring block 102, a gap exists between the end part provided with the notch on the second vertical rod 602 and the second circular ring part 302, and the size of the gap is larger than the distance between the communication hole 21 and the liquid cavity 23. The second vertical bar 602 has a first position and a second position, when the second vertical bar 602 is at the first position, the flow hole 21 is blocked by the third ring part 303, and at this time, the flow hole 21 is not communicated with the liquid chamber 23, and when the second vertical bar 602 is at the second position, the flow hole 21 is moved out of the side wall of the third ring part 303, and at this time, the flow hole 21 is communicated with the liquid chamber 23. When pump core 6 moves downward and receives the extrusion force of liquid, in order to reduce that second montant 602 moves to first montant 601 inside, at the inside wall integrated into one piece of first montant 601 fixed block 24, fixed block 24 and second montant 602 butt in order to realize the stability of second montant 602 in first montant 601.

When the second vertical rod 602 moves downwards, the sealed air pressure inside the liquid cavity 23 is increased, in order to facilitate the second vertical rod 602 to continue to move downwards, the outer side wall of the lower circular ring block 102 is provided with the balance hole 25, the balance hole 25 is blocked by the side wall of the first ring part 301, when the second piston head 3 and the first vertical rod 601 are extruded to move downwards, the balance hole 25 is communicated with the upper part of the first piston head 8, and at the moment, the air pressure on the upper part of the first piston head 8 is increased, so that the second vertical rod 602 continues to move downwards.

Referring to fig. 2, in order to reduce the influence of the balance hole 25 (see fig. 8) on the internal air pressure of the upper ring block 101, the sealing ring 4 is installed at the joint of the upper ring block 101 and the lower ring block 102, the radial cross-sectional shape of the sealing ring 4 is a ring, the outer side wall of the first vertical bar 601 abuts against the inner side wall of the sealing ring 4, the outer side wall of the sealing ring 4 is in interference fit with the inner side wall of the lower ring block 102, an outward flange is integrally formed at the top of the sealing ring 4, the lower surface of the flange abuts against the surface of the boss of the upper ring block 101, and the sealing ring 4, the pump core 6 and the first piston part enclose to form an air cavity 26. A support 27 is integrally formed on the outer side wall of the first stem 601, the support 27 has two steps perpendicular to the axis of the first stem 601, one end of the spring block 5 abuts against the lower surface of the step located above the support 27, and the other end is adhered to the upper surface of the seal ring 4, and the spring block 5 has a deformation capability and can expand and contract to some extent. A first air passage 28 communicated with the air chamber 26 is formed between the upper two steps of the first piston head 8 and the first vertical rod 601, a second air passage 29 communicated with the first air passage 28 is arranged in the pressing cover 901, the second air passage 29 is communicated with the speed changing hole 15 (see fig. 6), and the air valve assembly 7 is arranged on the support platform 27 to control whether the air chamber 26 is communicated with the first air passage 28.

Referring to fig. 9 and 10, the air valve assembly 7 includes a fixing ring 701, a first one-way air valve plate 702 and a second one-way air valve plate 703, the radial cross-sectional shape of the fixing ring 701 is a circular ring, one end of the fixing ring 701 abuts against the support table 27, the other end of the fixing ring 701 is inserted into the clamping ring groove 14, the first one-way air valve plate 702 is integrally formed on the inner ring of the fixing ring 701, the first one-way air valve plate 702 abuts against the upper stepped surface of the support table 27, the first one-way air valve plate 702 has certain deformability, a certain gap is formed between the lower stepped surface of the support table 27 and the first one-way air valve plate 702, the support table 27 is provided with an air port 30, and air in the air cavity 26 can act on the first one-way air valve plate 702 through the air port 30. The first one-way air valve plate 702 is provided with a first station and a second station, when the first one-way air valve plate 702 is positioned at the first station, the first one-way air valve plate 702 blocks the communication part of the air cavity 26 and the first air channel 28, so that the air cavity 26 is not communicated with the first air channel 28; when the first one-way valve plate 702 is at the second station, the first one-way valve plate 702 is bent upward, the air cavity 26 is communicated with the first air duct 28, and the air flows from the air cavity 26 to the first air duct 28.

Referring to fig. 11, the second one-way air valve plate 703 is integrally formed on the outer ring of the fixing ring 701, the second one-way air valve plate 703 abuts against the reverse side of the second step surface of the first piston head 8, the second one-way air valve plate 703 has a certain deformation capacity, a plurality of air inlets 31 are formed in the circumferential direction of the second step surface on the portion, which is not protruded, of the second step surface of the first piston head 8, the air inlets 31 are communicated with the outside, one end of each air inlet 31 is blocked by the second one-way air valve plate 703, the second one-way air valve plate 703 has a first station and a second station, and when the second one-way air valve plate 703 is at the first station, the second one-way air valve plate 703 blocks the communication position between the air cavity 26 (see fig. 2) and the outside, so that the air cavity 26 is not communicated with the outside; when the second one-way air valve plate 703 is at the second station, the second one-way air valve plate 703 bends downward, the air cavity 26 is communicated with the outside, and the air flows from the outside to the inside of the air cavity 26.

Referring to fig. 12, in order to reduce the occurrence of the spray pump being squeezed to perform work when not in use, the protective cover 11 abuts against the outer side wall of the second step of the connection housing 10, with the spray assembly 9 (see fig. 1) within the protective cover 11, to reduce the occurrence of the spray assembly 9 being squeezed when not in use. In order to realize the fixing of the protective cover 11 on the connecting shell 10, a first elastic limiting block 32 is integrally formed on the outer side wall of the connecting shell 10, a second elastic limiting block 33 connected with the first elastic limiting block 32 in a clamping manner is integrally formed on the inner side wall of the protective cover 11, and the first elastic limiting block 32 and the second elastic limiting block 33 both have certain deformation capacity. When the spraying pump is not used, the first elastic limiting block 32 is connected with the second elastic limiting block 33 in a clamped mode, the protection cover 11 is fixed to the connecting shell 10, when the spraying pump needs to be used, the protection cover 11 is pulled out hard to enable the first elastic limiting block 32 and the second elastic limiting block 33 to deform, the first elastic limiting block 32 and the second elastic limiting block 33 are connected in a clamped mode to be cancelled, and the protection cover 11 can be taken down from the connecting shell 10.

The implementation principle of the all-plastic recyclable spray pump for the high-consistency liquid in the embodiment of the application is as follows: when the spray pump needs to be used, the bottled liquid is in threaded connection with the connecting shell 10, then the protective cover 11 is taken down to squeeze the squeezing cover 901 inwards (see fig. 13), at the moment, the squeezing force of the squeezing cover 901 acts on the first piston head 8, the first piston head 8 moves downwards, the air pressure of the air cavity 26 is increased, the first one-way air valve plate 702 is pushed open (see fig. 14), and the air in the air cavity 26 can move to the speed change hole 15 through the first air passage 28 and the second air passage 29 (see fig. 15); in the process that the first piston head 8 moves downwards, the first piston head 8 drives the pump core 6 to move downwards, the spring block 5 is gradually compressed in the process that the pump core 6 moves downwards, the first vertical rod 601 abuts against the second ring part 302 to drive the second piston head 3 to move downwards synchronously after the second vertical rod 602 moves downwards for a certain distance, at the moment, the circulation hole 21 is communicated with the liquid cavity 23, and the pump core 6 can move downwards conveniently under the air pressure balance of the balance hole 25; when the pressing force of the pressing cover 901 disappears, the spring block 5 gradually returns to the original state to move the pump core 6 upwards (see fig. 16), at this time, negative pressure is formed inside the liquid cavity 23 to enable liquid to be pumped into the liquid channel 20, the liquid moves to the position of the variable speed hole 15 along the liquid channel 20 to be mixed with gas, and the liquid with high consistency can be atomized and sprayed out under the action of the spraying sheet 904 and the gas; meanwhile, in the process of upward movement of the pump core 6, the support table 27 drives the first piston head 8 to move upward, at this time, the air pressure in the air cavity 26 is gradually reduced, the air of the air inlet 31 pushes the second one-way air valve plate 703 open (see fig. 17), so that the air pressure in the air cavity 26 is communicated with the external air pressure, and at this time, the first piston head 8 can be quickly reset.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. An all-plastic recyclable spray pump for high consistency liquids, characterized in that: the device comprises a pump shell (1), a pump head assembly and a connecting shell (10) used for being connected with bottled liquid, wherein the pump head assembly comprises a first piston head (8) and a second piston head (3), the first piston head (8) axially slides in the pump shell (1) and forms an air cavity (26) with the interior of the pump shell (1), the second piston head (3) axially slides in the pump shell (1) and forms a liquid cavity (23) with the interior of the pump shell (1), a liquid one-way valve (2) enabling liquid to flow to the liquid cavity (23) is arranged at the lower end of the liquid cavity (23), the pump head assembly further comprises a squeezing cover (901) and a pump core (6), the bottom of the squeezing cover (901) is abutted against the first piston head (8), a spraying pipe (902) communicated with the pump core (6) is arranged on the squeezing cover (901), and a liquid channel (20) for liquid to flow is formed between the spraying pipe (902) and the pump core (6), the extrusion cover (901) is provided with a speed change block (903) connected with a spray pipe (902), the outer side wall of the speed change block (903) is provided with a spray sheet (904) for atomizing liquid, the speed change block (903) is provided with a speed change hole (15) communicated with a liquid channel (20), the speed change hole (15) is communicated with the interior of the spray sheet (904), the pump core (6) is provided with a circulation hole (21) communicated with the liquid channel (20), the second piston head (3) is arranged on the outer surface of the pump core (6), the pump core (6) is provided with a first station and a second station, when the pump core (6) is positioned at the first station, the second piston head (3) covers the opening of the circulation hole (21), when the pump core (6) is positioned at the second station, the circulation hole (21) is communicated with the liquid cavity (23), the outer side wall of the pump core (6) is provided with a support platform (27), a driving assembly is clamped between the supporting table (27) and the bottom surface of the air cavity (26), the driving assembly comprises a spring block (5) which stretches along the axial direction of the air cavity (26), a first air passage (28) which is used for air to flow and communicated with the air cavity (26) is formed between the pump core (6) and the second piston head (3), a second air passage (29) which is communicated with the first air passage (28) is arranged on the squeezing cover (901), the second air passage (29) is communicated with the speed change hole (15), an air valve assembly (7) is arranged on the supporting table (27), the air valve assembly (7) comprises a first one-way air valve plate (702) which controls whether the first air passage (28) is communicated with the air cavity (26), the air flowing direction of the first one-way air valve plate (702) is from the air cavity (26) to the first air passage (28), and an air inlet (31) which is communicated with the outside is formed in the first piston head (8), the air valve assembly (7) further comprises a second one-way air valve plate (703) for controlling the air inlet (31) to be communicated with the air cavity (26), and the air flow direction of the second one-way air valve plate (703) is from the air inlet (31) to the air cavity (26).

2. An all plastic retrievable spray pump for liquids of high consistency according to claim 1, characterised in that: the driving assembly further comprises a sealing ring (4), the sealing ring (4) is arranged at one end, close to the liquid cavity (23), in the air cavity (26), and the spring block (5) is clamped between the sealing ring (4) and the supporting table (27).

3. An all plastic retrievable spray pump for liquids of high consistency according to claim 1, characterised in that: the air valve assembly (7) further comprises a fixing ring (701), and the fixing ring (701) is inserted on the first piston head (8) in an interference mode.

4. An all plastic retrievable spray pump for liquids of high consistency according to claim 1, characterised in that: the top of the pump shell (1) is provided with an outward-turned convex edge (12), and the inner side wall of the connecting shell (10) is provided with a limiting ring (13) clamped with the convex edge (12).

5. An all plastic retrievable spray pump for liquids of high consistency according to claim 1, characterised in that: pump core (6) include first montant (601) and second montant (602), first montant (601) axial runs through, peg graft in first montant (601) second montant (602), be provided with fixed block (24) with second montant (602) butt in first montant (601), the one end of keeping away from second montant (602) in first montant (601) is pegged graft in spray tube (902), circulation hole (21) are seted up on second montant (602).

6. An all plastic retrievable spray pump for liquids of high consistency according to claim 5, characterised in that: one end of the second vertical rod (602) far away from the first vertical rod (601) is provided with a fixing part (22) clamped with the second piston head (3).

7. An all plastic retrievable spray pump for liquids of high consistency according to claim 5, characterised in that: and a balance hole (25) is formed in the pump shell (1), and the balance hole (25) is flush with the side wall of the second piston head (3).

8. An all plastic retrievable spray pump for liquids of high consistency according to claim 1, characterised in that: the lateral wall of the speed changing block (903) is provided with an anti-rotation block (18), and the lateral wall of the spraying piece (904) is provided with a clamping block (19) clamped with the anti-rotation block (18).

9. An all plastic retrievable spray pump for liquids of high consistency according to claim 1, characterised in that: the connecting shell (10) is provided with a protective cover (11), and the squeezing cover (901) is arranged in the protective cover (11).

10. An all plastic retrievable spray pump for liquids of high consistency according to claim 9, characterised in that: the lateral wall of connecting shell (10) is provided with first elasticity stopper (32), the inside wall of safety cover (11) is provided with second elasticity stopper (33) with first elasticity stopper (32) joint.

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