Delayed spraying pump and spraying device

Abstract

The utility model discloses a time-delay atomizing pump and an atomizing device, and the time-delay atomizing pump comprises a pump body, a first valve body, an assembly element, a lower piston, a second valve body, an upper piston, a pump cover, an atomizing head cap, an inner side elastic piece and an outer side elastic piece, the lower piston is movably installed in a pump cavity of the pump body, a lower liquid storage cavity is formed between the lower piston and the pump body, a first piston channel of the lower piston is communicated with the lower liquid storage cavity, the second valve body is installed on the lower piston, the upper piston is movably installed in an assembling cavity of the assembling element, and a second piston channel of the upper piston is communicated with a liquid outlet channel of the assembling element. The pump cover is installed on the top of the assembly element, an upper liquid storage cavity is formed between the pump cover and the upper piston, the second piston channel communicates with the upper liquid storage cavity, the atomization head cap is installed on the pump cover, a head cap channel of the atomization head cap communicates with a pump cover channel, and the two opposite ends of the inner side elastic piece abut against the assembly element and the upper piston correspondingly. The two opposite ends of the outer side elastic piece abut against the pump body and the pump cover respectively.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of spray pumps, in particular to a kind of delay spray pump and spray device. BACKGROUND

[0002] Spray pump has extensive use in daily chemical, medicine and other fields, which can pump out liquid and atomize to form spray. For example, a kind of pressure type spray pump is disclosed in the Chinese utility model patent with the authorization announcement No.CN217349115U, which includes main body, cover plate, outer check valve, piston, inner check valve, upper pump rod, small piston, first elastic member and reset elastic member, the main body is provided with hollow part, the both ends of main body hollow part are respectively provided with upper through hole and lower through hole, cover plate is fixed with main body, upper through hole is located to seal main body hollow part with outside, cover plate is provided with cover plate through hole which is communicated with main body hollow part, outer check valve is located at lower through hole position, liquid outside main body can flow to main body hollow part through outer check valve, piston main body inner wall abuts, moves up and down in main body hollow part, divides main body hollow part into upper chamber and liquid suction cavity, piston is provided with piston through hole, for connecting upper chamber and liquid suction cavity, inner check valve is located at piston through hole position, liquid in liquid suction cavity can flow to upper chamber through inner check valve, upper pump rod includes communication column and side, communication column is provided with liquid outlet hole, communication column passes through cover plate through hole, side moves up and down in main body hollow part, small piston is located between upper pump rod and piston in main body, small piston upper side is provided with sealing column, extends into the liquid outlet hole of upper pump rod communication column to seal liquid outlet hole, small piston and upper pump rod form liquid storage cavity, small piston is provided with communication channel, communication channel connects liquid storage cavity with small piston lower side, first elastic member is located between small piston and piston, reset elastic member is located at the outside of cover plate, when upper pump rod moves downward, reset elastic member is compressed / stretched, after eliminating the external force applied to upper pump rod downward, under the action of reset elastic member, upper pump rod moves upward, restores to initial position. The defect of prior art pressure type spray pump is that first elastic member and reset elastic member adopt up-down arrangement scheme, which leads to higher overall height size of pressure type spray pump, cannot meet the demand of user to small size spray device. UTILITY MODEL CONTENTS

[0003] One purpose of the utility model is to provide a kind of delay spray pump and spray device, wherein the delay spray pump has lower height size.

[0004] One purpose of the utility model is to provide a kind of delay spray pump and spray device, wherein the delay spray pump has lower height size.

[0005] In order to achieve the above object, the utility model provides a technical scheme which is a delay spray pump, which comprises:

[0006] A pump body has a pump cavity and a liquid inlet hole;

[0007] A first valve body is installed on the pump body and is used for opening and closing the liquid inlet hole of the pump body;

[0008] An assembly element has an assembly cavity and a liquid outlet channel connected to the assembly cavity;

[0009] A lower piston is fixedly installed on the bottom of the assembly element and is movably installed on the pump cavity of the pump body, and the delay spray pump forms a lower liquid storage cavity between the lower piston and the pump body, and a first piston channel of the lower piston is connected to the lower liquid storage cavity;

[0010] A second valve body is installed on the lower piston and is used for allowing and preventing the first piston channel of the lower piston from being connected to the liquid outlet channel of the assembly element;

[0011] An upper piston is movably installed in the assembly cavity of the assembly element, and a second piston channel of the upper piston is connected to the liquid outlet channel of the assembly element;

[0012] A pump cover is installed on the top of the assembly element, and the delay spray pump forms an upper liquid storage cavity between the upper piston and the pump cover, and the second piston channel of the upper piston is connected to the upper liquid storage cavity, wherein the upper piston is used for allowing and preventing a pump cover channel of the pump cover from being connected to the upper liquid storage cavity;

[0013] An atomizing head cap is installed on the pump cover, and a head cap channel of the atomizing head cap is connected to the pump cover channel of the pump cover;

[0014] An inner elastic element has two opposite ends which abut against the assembly element and the upper piston respectively;

[0015] An outer elastic element has two opposite ends which abut against the pump body and the pump cover respectively.

[0016] According to one embodiment of the utility model, the second valve body is a deformed pipe body which is sleeved on the lower piston, and the second valve body allows the first piston channel of the lower piston to be connected to the liquid outlet channel of the assembly element through expansion deformation.

[0017] According to one embodiment of the utility model, the delay spray pump forms a deformation space between the assembly element and the lower piston, and the second valve body is located in the deformation space.

[0018] According to one embodiment of the utility model, the assembly element has an assembly groove, the liquid outlet channel is communicated with the assembly groove, the lower piston comprises a piston main body, an assembly part extending upward from the piston main body and a sleeving part extending upward from the assembly part, the first piston channel of the lower piston has a longitudinal extension channel and a transverse extension channel communicated with the longitudinal extension channel, the longitudinal extension channel extends from the piston main body to the sleeving part through the assembly part, the transverse extension channel extends from the longitudinal extension channel to the peripheral wall of the assembly part, the second valve body is sleeved on the sleeving part, and the second valve body covers the opening of the transverse extension channel formed in the side wall of the sleeving part, wherein the outer diameter size of the sleeving part of the lower piston is smaller than the inner diameter size of the assembly groove of the assembly element, so that the deformation space is formed between the assembly element and the sleeving part of the lower piston after the sleeving part and the assembly part of the lower piston are inserted into the assembly element and the assembly part is clamped in the assembly element.

[0019] According to one embodiment of the utility model, the assembly element has a first plug-in pipe extending upward, the liquid outlet channel of the assembly element is formed in the first plug-in pipe, the upper piston has a second plug-in pipe extending downward, a part of the second piston channel of the upper piston is formed in the second plug-in pipe, and the first plug-in pipe of the assembly element and the second plug-in pipe of the upper piston are plugged into each other, so that the second piston channel of the upper piston is communicated with the liquid outlet channel of the assembly element.

[0020] According to one embodiment of the utility model, the inner elastic member is a spring, the bottom of which is sleeved on the first plug-in pipe of the assembly element, and the top of which is sleeved on the second plug-in pipe of the upper piston.

[0021] According to one embodiment of the utility model, the first plug-in pipe of the assembly element is inserted into the second plug-in pipe of the upper piston, and the outer wall of the top end of the first plug-in pipe is always attached to the inner wall of the upper piston for forming the second plug-in pipe.

[0022] According to one embodiment of the utility model, the outer elastic member is a spring, which is sleeved on the assembly element.

[0023] According to one embodiment of the present application, the top of the upper piston has a cone which can be inserted into and withdrawn from the pump cover passage of the pump cover, when the cone of the upper piston is inserted into the pump cover passage of the pump cover, the upper piston prevents the pump cover passage of the pump cover from communicating with the upper liquid storage cavity, and when the cone of the upper piston is withdrawn from the pump cover passage of the pump cover, the upper piston allows the pump cover passage of the pump cover to communicate with the upper liquid storage cavity.

[0024] According to one embodiment of the present application, the bottom wall of the pump body for forming the pump cavity has a boss, and the peripheral wall has a groove, the height dimension of the boss is smaller than the height dimension of the groove, the middle part of the pump body has an air outlet hole which communicates with the pump cavity, and when the lower piston moves to the bottom of the pump cavity of the pump body, the groove of the pump body communicates the lower liquid storage cavity and the space between the assembly element and the pump body.

[0025] According to one embodiment of the present application, the delay spray pump comprises a tooth cover which is installed on the top of the pump body, and a part of the pump cover extends above the compression cover after passing through the tooth cover passage of the compression cover.

[0026] According to another aspect of the present application, the present application further provides a spray device which comprises a bottle body and a delay spray pump, wherein the delay spray pump is installed on the bottle body, and wherein the delay spray pump comprises:

[0027] a pump body having a pump cavity and a liquid inlet hole;

[0028] a first valve body which is installed on the pump body and is used for opening and closing the liquid inlet hole of the pump body;

[0029] an assembly element having an assembly cavity and a liquid outlet passage which communicates with the assembly cavity;

[0030] a lower piston which is installed in the pump cavity of the pump body in a vertically movable manner, the delay spray pump forms a lower liquid storage cavity between the lower piston and the pump body, and a first piston passage of the lower piston communicates with the lower liquid storage cavity;

[0031] a second valve body which is installed on the lower piston and is used for allowing and preventing the first piston passage of the lower piston from communicating with the liquid outlet passage of the assembly element;

[0032] an upper piston which is installed in the assembly cavity of the assembly element in a vertically movable manner, and a second piston passage of the upper piston communicates with the liquid outlet passage of the assembly element;

[0033] a pump cover installed on top of the assembly element, the time delay spray pump forming an upper liquid storage cavity between the upper piston and the pump cover, the second piston passage of the upper piston being in communication with the upper liquid storage cavity, wherein the upper piston is used to allow and prevent the pump cover passage of the pump cover to be in communication with the upper liquid storage cavity;

[0034] a cap of an atomizing head installed on the pump cover, a cap passage of the cap of the atomizing head being in communication with the pump cover passage of the pump cover;

[0035] an inner elastic member, opposite two ends of which are respectively abutted against the assembly element and the upper piston;

[0036] an outer elastic member, opposite two ends of which are respectively abutted against the pump body and the pump cover. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a cross-sectional view of a spray device according to a preferred embodiment of the present utility model.

[0038] Figure 2 is a perspective view of a time delay spray pump of the spray device according to the preferred embodiment of the present utility model.

[0039] Figure 3 is an exploded view of the time delay spray pump of the spray device according to the preferred embodiment of the present utility model from one perspective.

[0040] Figure 4 is an exploded view of the time delay spray pump of the spray device according to the preferred embodiment of the present utility model from another perspective.

[0041] Figure 5 is a cross-sectional view of the time delay spray pump of the spray device according to the preferred embodiment of the present utility model from a perspective.

[0042] Figure 6 is Figure 5 an enlarged view of a local position.

[0043] Figure 7 is Figure 5 an enlarged view of another local position.

[0044] Figures 8 to 11 are respectively cross-sectional views of the time delay spray pump of the spray device according to the preferred embodiment of the present utility model in different states. DETAILED DESCRIPTION

[0045] Before any embodiments of the present application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The application is capable of other embodiments and of being practiced or being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," or "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless specified or limited otherwise, the terms "mounted," "connected," "supported," and "coupled" and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Further, "connected" and "coupled" are not restricted to physical or mechanical connections or couplings.

[0046] Also, in the disclosure of the present application, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as limiting the present application; secondly, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, the term "one" cannot be understood as limiting the number.

[0047] Reference is made to the drawings of the present application Figures 1 to 11 A spray device according to a preferred embodiment of the present application will be disclosed and described in the following description, wherein the spray device comprises a bottle body 10 and a time-delay spray pump 20 mounted on the bottle body 10, the bottle body 10 is used for containing liquid, and the time-delay spray pump 20 is used for pumping out and atomizing the liquid contained in the bottle body 10 to form a spray.

[0048] As shown in the drawings Figures 3 to 5 The time-delay spray pump 20 comprises a pump body 21, an assembly element 22, a lower piston 23, an upper piston 24, a first valve body 25, a second valve body 26, a pump cover 27, an atomizing head cap 28, an inner elastic member 29, and an outer elastic member 210.

[0049] Specifically, the pump body 21 has a pump cavity 2101 and a liquid inlet hole 2102 communicated with the pump cavity 2101. The first valve body 25 is installed on the pump body 21 for opening and closing the liquid inlet hole 2102 of the pump body 21. When the first valve body 25 opens the liquid inlet hole 2102 of the pump body 21, liquid is allowed to enter the pump cavity 2101 through the liquid inlet hole 2102 of the pump body 21. When the first valve body 25 closes the liquid inlet hole 2102 of the pump body 21, liquid is prevented from entering the pump cavity 2101 through the liquid inlet hole 2102 of the pump body 21.

[0050] In this specific example of the spray device of the utility model, the first valve body 25 is a ball valve which opens and closes the liquid inlet hole 2102 of the pump body 21 by moving up and down. Figure 5 And Figure 7 As shown in the drawings, the pump body 21 has a set of first limiting arms 2103 and a set of second limiting arms 2104 at the bottom of the pump cavity 2101. The set of first limiting arms 2103 extend upwardly and the openings formed at the ends of the set of first limiting arms 2103 have a size smaller than the diameter of the first valve body 25. The set of second limiting arms 2104 extend downwardly and the openings formed at the ends of the set of second limiting arms 2104 have a size smaller than the diameter of the first valve body 25. Thus, the first valve body 25 is limited by the set of first limiting arms 2103 and the set of second limiting arms 2104 so that the first valve body 25 can move upwardly to open the liquid inlet hole 2102 of the pump body 21 and can move downwardly to close the liquid inlet hole 2102 of the pump body 21. In another specific example of the spray device of the utility model, the first valve body 25 can also be a valve plate which opens and closes the liquid inlet hole 2102 of the pump body 21 by deforming upwardly and downwardly.

[0051] The assembly element 22 has an assembly cavity 2201 and a liquid outlet channel 2202 communicated with the assembly cavity 2201. The lower piston 23 has a first piston channel 2301. The second valve body 26 is installed on the lower piston 23. The lower piston 23 is fixedly installed on the assembly element 22. The second valve body 26 is used for allowing and preventing the first piston channel 2301 of the lower piston 23 to be communicated with the liquid outlet channel 2202 of the assembly element 22.

[0052] The lower piston 23 is movably installed on the pump cavity 2101 of the pump body 21. The delay spray pump 20 forms a lower liquid storage cavity 211 between the lower piston 23 and the pump body 21. The first piston channel 2301 of the lower piston 23 is communicated with the lower liquid storage cavity 211.

[0053] The upper piston 24 has a second piston passage 2401, the upper piston 24 is installed in the assembly cavity 2201 of the assembly element 22 in a vertically movable manner, wherein the pump cover 27 has a pump cover passage 2701, the pump cover 27 is installed on the top of the assembly element 22 for closing the opening of the assembly cavity 2201 of the assembly element 22, the time delay spray pump 20 forms an upper liquid storage cavity 212 between the upper piston 24 and the pump cover 27, the second piston passage 2401 of the upper piston 24 is communicated with the upper liquid storage cavity 212, and the upper piston 24 allows and prevents the pump cover passage 2701 of the pump cover 27 to be communicated with the upper liquid storage cavity 212. When the upper piston 24 moves downward, the upper piston 24 is away from the pump cover 27, so that the upper piston 24 allows the pump cover passage 2701 of the pump cover 27 to be communicated with the upper liquid storage cavity 212; when the upper piston 24 moves upward, the upper piston 24 is attached to the pump cover 27, so that the upper piston 24 prevents the pump cover passage 2701 of the pump cover 27 to be communicated with the upper liquid storage cavity 212.

[0054] The atomizing head cap 28 has a head cap passage 2801, the atomizing head cap 28 is installed on the pump cover 27, and the head cap passage 2801 of the atomizing head cap 28 is communicated with the pump cover passage 2701 of the pump cover 27.

[0055] The opposite ends of the inner elastic member 29 are respectively abutted against the assembly element 22 and the upper piston 24, when the upper piston 24 moves downward, the inner elastic member 29 is compressed and deformed to accumulate elastic potential energy, after the external force for pressing the upper piston 24 to move downward is removed, the inner elastic member 29 pushes the upper piston 24 to move upward in the process of returning to the initial state.

[0056] The opposite ends of the outer elastic member 210 are respectively abutted against the pump body 21 and the pump cover 27, when the pump cover 27, the assembly element 22, the upper piston 24, the inner elastic member 29 and the lower piston 23 are pressed and move downward, the outer elastic member 210 is compressed and deformed to accumulate elastic potential energy, after the external force for pressing the pump cover 27, the assembly element 22, the upper piston 24, the inner elastic member 29 and the lower piston 23 to move downward is removed, the outer elastic member 210 pushes the pump cover 27, the assembly element 22, the upper piston 24, the inner elastic member 29 and the lower piston 23 to move upward in the process of returning to the initial state.

[0057] Unlike the prior art, in this specific example of the spray device of the present utility model, the inner elastic member 29 and the outer elastic member 210 of the time-delay spray pump 20 adopt an inner-outer layer arrangement, that is, from a side view perspective, the inner elastic member 29 and the outer elastic member 210 have an overlapping portion, so that the time-delay spray pump 20 of the spray device of the present utility model can have a lower height dimension.

[0058] Attached Figures 8 to 11 Different states of the time-delay spray pump 20 are shown.

[0059] Specifically, when the atomizing head cap 28 is pressed downward, the atomizing head cap 28, the pump cover 27, the assembly element 22, the upper piston 24, the inner elastic member 29, the lower piston 23 and the second valve body 26 move downward synchronously in this process, on the one hand, the first valve body 25 prevents the liquid inlet hole 2102 of the pump body 21 from communicating with the lower liquid storage cavity 211, on the other hand, the outer elastic member 210 is compressed and deformed to accumulate elastic potential energy, and on the other hand, the space of the lower liquid storage cavity 211 becomes smaller and the pressure increases, the liquid in the lower liquid storage cavity 211 makes the second valve body 26 allow the first piston passage 2301 of the lower piston 23 to communicate with the liquid outlet passage 2202 of the assembly element 22, and the liquid in the lower liquid storage cavity 211 enters the upper liquid storage cavity 212 through the first piston passage 2301 of the lower piston 23, the liquid outlet passage 2202 of the assembly element 22 and the second piston passage 2401 of the upper piston 24. As the amount of liquid entering the upper liquid storage cavity 212 increases, the liquid pushes the upper piston 24 to move downward, in this process, on the one hand, the upper piston 24 allows the pump cover passage 2701 of the pump cover 27 to communicate with the upper liquid storage cavity 212, and the liquid in the upper liquid storage cavity 212 enters the head cap passage 2801 of the atomizing head cap 28 through the pump cover passage 2701 of the pump cover 27, and is atomized to form a spray when sprayed through the atomizing head cap 28, on the other hand, the inner elastic member 29 is compressed and deformed to accumulate elastic potential energy.

[0060] When the pressure applied to the atomizing head cap 28 is removed, the outer elastic member 210 pushes the atomizing head cap 28, the pump cover 27, the assembly element 22, the upper piston 24, the inner elastic member 29, the lower piston 23, and the second valve body 26 upward synchronously during the process of returning to the initial state. During this process, the space of the lower liquid storage chamber 211 increases and the pressure decreases. On the one hand, the first valve body 25 opens the liquid inlet hole 2102 of the pump body 21, allowing the liquid in the bottle 10 to be replenished to the lower liquid storage chamber 211 through the liquid inlet hole 2102 of the pump body 21. On the other hand, the second valve body 26 prevents the first piston channel 2301 of the lower piston 23 from connecting to the liquid outlet channel 2202 of the assembly element 22, ensuring that the upper liquid storage chamber 212 is in a pressure-holding state. During the process of liquid in the upper reservoir 212 entering the atomizing head cap 2801 through the pump cover channel 2701 of the pump cover 27 and being sprayed out through the atomizing head cap 28, the inner elastic member 29 pushes the upper piston 24 upward during the process of returning to its initial state, and finally moves the upper piston 24 to a position that prevents the pump cover channel 2701 of the pump cover 27 from communicating with the upper reservoir 212. It can be understood that after the pressure in the lower reservoir 211 and the pressure in the bottle 10 are balanced, the first valve body 25 closes the liquid inlet 2102 of the pump body 21.

[0061] In other words, even if the user removes the pressure applied to the atomizing head cap 28 after pressing it down, the liquid in the upper liquid storage chamber 212 can still be sprayed out through the atomizing head cap 28 for a period of time, thereby achieving the effect of delayed spraying.

[0062] like Figure 5 and Figure 6 As shown, the second valve body 26 is a deformable tube that is fitted onto the lower piston 23. The second valve body 26 allows the first piston channel 2301 of the lower piston 23 to connect to the liquid outlet channel 2202 of the assembly element 22 by means of expansion and deformation.

[0063] Specifically, when the second valve body 26 expands and deforms, the second valve body 26 allows the first piston passage 2301 of the lower piston 23 to connect with the liquid outlet passage 2202 of the assembly element 22. When the second valve body 26 returns to its initial state, the second valve body 26 prevents the first piston passage 2301 of the lower piston 23 from connecting with the liquid outlet passage 2202 of the assembly element 22.

[0064] More specifically, when the space of the lower liquid storage cavity 211 is reduced and the pressure is increased by pressing the atomizing head cap 28 downward, the second valve body 26 is deformed to allow the first piston passage 2301 of the lower piston 23 to communicate with the liquid outlet passage 2202 of the assembly element 22. When the space of the lower liquid storage cavity 211 is increased and the pressure is reduced by removing the pressure applied to the atomizing head cap 28, the second valve body 26 returns to the original state to prevent the first piston passage 2301 of the lower piston 23 from communicating with the liquid outlet passage 2202 of the assembly element 22.

[0065] Preferably, the delay spray pump 20 forms a deformation space 213 between the assembly element 22 and the lower piston 23, and the second valve body 26 is located in the deformation space 213, so that the second valve body 26 can be deformed in the deformation space 213.

[0066] In order to install the lower piston 23 on the bottom of the assembly element 22 and form the deformation space 213 between the assembly element 22 and the lower piston 23, in this specific example of the spray device of the utility model, as shown in Figure 5 and Figure 6 The assembly element 22 has an assembly groove 2203, and the liquid outlet passage 2202 communicates with the assembly groove 2203. The lower piston 23 includes a piston body 231, an assembly part 232 extending upward from the piston body 231, and a sleeving part 233 extending upward from the assembly part 232. The first piston passage 2301 of the lower piston 23 has a longitudinally extending passage 23011 and at least one transversely extending passage 23012. The longitudinally extending passage 23011 extends from the piston body 231 to the sleeving part 233 through the assembly part 232. The transversely extending passage 23012 extends from the longitudinally extending passage 23011 to the side wall of the sleeving part 233. The second valve body 26 is sleeved on the sleeving part 233, and the second valve body 26 covers the opening of the transversely extending passage 23012 formed in the side wall of the sleeving part 233. The outer diameter of the sleeving part 233 of the lower piston 23 is smaller than the inner diameter of the assembly groove 2203 of the assembly element 22, so that when the sleeving part 233 and the assembly part 232 of the lower piston 23 are inserted into the assembly groove 2203 of the assembly element 22 and the assembly part 232 is installed on the assembly element 22, the delay spray pump 20 forms the deformation space 213 between the assembly element 22 and the sleeving part 233 of the lower piston 23, and the second valve body 26 is located in the deformation space 213.

[0067] It can be understood that the outer diameter of the assembly portion 232 of the lower piston 23 and the inner diameter of the assembly groove 2203 of the assembly element 22 are consistent, so that the assembly portion 232 can be clamped in the assembly element 22 after the assembly portion 232 is inserted into the assembly groove 2203 of the assembly element 22. The outer diameter of the piston body 231 of the lower piston 23 and the inner diameter of the pump cavity 2101 of the pump body 21 are matched, so that the lower liquid storage cavity 211 can be formed between the lower piston 23 and the pump body 21, and the piston body 231 can move up and down in the pump cavity 2101 of the pump body 21.

[0068] The assembly element 22 has a first insertion pipe 2204 extending upward, the liquid outlet channel 2202 of the assembly element 22 is formed in the first insertion pipe 2204, the upper piston 24 has a second insertion pipe 2402 extending downward, a part of the second piston channel 2401 of the upper piston 24 is formed in the second insertion pipe 2402, and the first insertion pipe 2204 of the assembly element 22 and the second insertion pipe 2402 of the upper piston 24 are inserted into each other, so that the second piston channel 2401 of the upper piston 24 is communicated with the liquid outlet channel 2202 of the assembly element 22, and the first insertion pipe 2204 of the assembly element 22 and the second insertion pipe 2402 of the upper piston 24 cooperate with each other to ensure that the movement direction of the upper piston 24 is only up and down, and the upper piston 24 is prevented from tilting. For example, in this specific example of the spray device of the utility model, as shown in Figure 5 The outer wall of the top end of the first insertion pipe 2204 of the assembly element 22 is always attached to the inner wall of the second insertion pipe 2402 of the upper piston 24, so that liquid can be prevented from leaking through the connection position of the first insertion pipe 2204 of the assembly element 22 and the second insertion pipe 2402 of the upper piston 24 during the process of pumping liquid by the delay spray pump 20.

[0069] Continuing to refer to the accompanying Figure 5The inner elastic member 29 is a spring, the bottom of which is sleeved on the first inserting pipe 2204 of the assembling element 22, and the top of which is sleeved on the second inserting pipe 2402 of the upper piston 24, so that the first inserting pipe 2204 of the assembling element 22 and the second inserting pipe 2402 of the upper piston 24 cooperate with each other to prevent the inner elastic member 29 from being tilted, and ensure that the opposite two ends of the inner elastic member 29 abut against the assembling element 22 and the upper piston 24 respectively. It can be understood that, since the outer wall of the top end of the first inserting pipe 2204 of the assembling element 22 always adheres to the inner wall of the upper piston 24 for forming the second inserting pipe 2402, the inner elastic member 29 will not be in contact with liquid, so that even if the inner elastic member 29 is a metal member, it will not be easy to be oxidized, and even if the inner elastic member 29 is oxidized, it will not pollute the liquid entering the upper liquid storage cavity 212.

[0070] In the spraying device, the outer elastic member 210 is a spring, which is sleeved on the assembling element 22, so that the assembling element 22 can prevent the outer elastic member 210 from being tilted, and ensure that the opposite two ends of the outer elastic member 210 abut against the pump body 21 and the pump cover 27 respectively.

[0071] Reference is made to the accompanying drawings Figure 5 The top of the upper piston 24 is provided with a conical body 2403, which can be inserted into and withdrawn from the pump cover passage 2701 of the pump cover 27. When the upper piston 24 moves downward to move away from the pump cover 27, the conical body 2403 of the upper piston 24 is withdrawn from the pump cover passage 2701 of the pump cover 27, so that the upper piston 24 allows the pump cover passage 2701 of the pump cover 27 to be communicated with the upper liquid storage cavity 212. Correspondingly, when the upper piston 24 moves upward to move close to the pump cover 27, the conical body 2403 of the upper piston 24 extends into the pump cover passage 2701 of the pump cover 27, so that the upper piston 24 prevents the pump cover passage 2701 of the pump cover 27 from being communicated with the upper liquid storage cavity 212.

[0072] Reference is made to the accompanying drawings Figures 1 to 5The delay spray pump 20 further comprises a cap 214 with a cap channel 21401, the cap 214 is installed on the top of the pump body 21, a part of the pump cap 27 extends above the pump cap 27 after passing through the cap channel 21401 of the cap 214, wherein the cap 214 is used to install the delay spray pump 20 on the bottle body 10. Specifically, after the bottom of the delay spray pump 20 extends into the bottle body 10 through the bottle opening of the bottle body 10, the cap 214 is screwed on the bottle opening of the bottle body 10, so that the delay spray pump 20 is installed on the bottle body 10.

[0073] With reference to the accompanying drawings Figures 1 to 5 The delay spray pump 20 further comprises a suction pipe 215, one end of the suction pipe 215 is inserted into the pump body 21, and the suction pipe 215 can extend to the bottom of the bottle body 10 after the delay spray pump 20 is installed on the bottle body 10.

[0074] With reference to the accompanying drawings Figure 3 And Figure 7 The bottom wall of the pump body 21 for forming the pump cavity 2101 has at least one boss 2105, the height size of the boss 2105 is smaller than the height size of the groove 2106, the middle part of the pump body 21 has at least one air outlet hole 2107, the air outlet hole 2107 is communicated with the pump cavity 2101, wherein when the lower piston 23 moves to the bottom of the pump cavity 2101 of the pump body 21, the groove 2106 of the pump body 21 communicates the lower liquid storage cavity 211 and the space between the assembly element 22 and the pump body 21, so that the air in the lower liquid storage cavity 211 can be sequentially discharged through the groove 2106 of the pump body 21, the space between the assembly element 22 and the pump body 21, and the air outlet hole 2107 of the pump body 21.

[0075] Preferably, in this specific example of the spray device of the utility model, the bottom wall of the pump body 21 for forming the pump cavity 2101 has a plurality of bosses 2105, and the bosses 2105 are arranged at intervals. The peripheral wall of the pump body 21 for forming the pump cavity 2101 has a plurality of grooves 2106, and the grooves 2106 are arranged at intervals.

[0076] Those skilled in the art should understand that the above description and the embodiments of the utility model shown in the drawings are only examples and do not limit the utility model. The purpose of the utility model has been completely and effectively realized. The function and structural principle of the utility model have been shown and explained in the embodiments, and the implementation of the utility model can be any deformation or modification without departing from the principle.

Claims

1. A time delay spray pump characterized by, The delay spray pump comprises: a pump body having a pump cavity and an inlet hole; a first valve body mounted on the pump body for opening and closing the inlet hole of the pump body; an assembly element having an assembly cavity and an outlet channel communicated with the assembly cavity; a lower piston fixedly mounted on the bottom of the assembly element and movably mounted in the pump cavity of the pump body, the delay spray pump forming a lower storage cavity between the lower piston and the pump body, the first piston channel of the lower piston being communicated with the lower storage cavity; a second valve body mounted on the lower piston for allowing and preventing the first piston channel of the lower piston from being communicated with the outlet channel of the assembly element; an upper piston movably mounted in the assembly cavity of the assembly element, the second piston channel of the upper piston being communicated with the outlet channel of the assembly element; a pump cover mounted on the top of the assembly element, the delay spray pump forming an upper storage cavity between the upper piston and the pump cover, the second piston channel of the upper piston being communicated with the upper storage cavity, wherein the upper piston is used for allowing and preventing the pump cover channel of the pump cover from being communicated with the upper storage cavity; an atomizing head cap mounted on the pump cover, the head cap channel of the atomizing head cap being communicated with the pump cover channel of the pump cover; an inner elastic member having opposite two ends abutting against the assembly element and the upper piston, respectively; an outer elastic member having opposite two ends abutting against the pump body and the pump cover, respectively.

2. The delay spray pump according to claim 1, wherein the second valve body is a deformed tube body sleeved on the lower piston, the second valve body allowing the first piston channel of the lower piston to be communicated with the outlet channel of the assembly element by means of expansion deformation.

3. The delay spray pump according to claim 2, wherein the delay spray pump forms a deformation space between the assembly element and the lower piston, and the second valve body is located in the deformation space.

4. The delay spray pump according to claim 3, wherein the assembly element has an assembly groove, the outlet channel is communicated with the assembly groove, the lower piston comprises a piston main body, an assembly portion extending upward from the piston main body, and a sleeving portion extending upward from the assembly portion, the first piston channel of the lower piston has a longitudinal extension channel and a transverse extension channel communicated with the longitudinal extension channel, the longitudinal extension channel extends from the piston main body to the sleeving portion through the assembly portion, the transverse extension channel extends from the longitudinal extension channel to the peripheral wall of the assembly portion, the second valve body is sleeved on the sleeving portion, and the second valve body covers the opening of the transverse extension channel formed in the side wall of the sleeving portion, wherein the outer diameter of the sleeving portion of the lower piston is smaller than the inner diameter of the assembly groove of the assembly element, so that the deformation space is formed between the assembly element and the sleeving portion of the lower piston after the sleeving portion and the assembly portion of the lower piston are inserted into the assembly element and the assembly portion is clamped in the assembly element.

5. The time delay spray pump of claim 1 wherein said assembly member has a first spigot pipe extending upwardly, said liquid outlet passage of said assembly member is formed in said first spigot pipe, said upper piston has a second spigot pipe extending downwardly, a portion of said second piston passage of said upper piston is formed in said second spigot pipe, said first spigot pipe of said assembly member and said second spigot pipe of said upper piston are spigoted to each other such that said second piston passage of said upper piston is in communication with said liquid outlet passage of said assembly member.

6. The time delay spray pump of claim 5 wherein said inner elastic member is a spring, a bottom portion of said spring is sleeved in said first spigot pipe of said assembly member, a top portion of said spring is sleeved in said second spigot pipe of said upper piston.

7. The time delay spray pump of claim 5 wherein said first spigot pipe of said assembly member is inserted into said second spigot pipe of said upper piston, an outer wall of a top end of said first spigot pipe always abuts against an inner wall of said upper piston for forming said second spigot pipe.

8. The time delay spray pump of claim 1 wherein said outer elastic member is a spring, said spring is sleeved in said assembly member.

9. The time delay spray pump of claim 1 wherein a top portion of said upper piston has a conical body, said conical body of said upper piston is capable of being inserted into and withdrawn from said pump cover passage of said pump cover, when said conical body of said upper piston is inserted into said pump cover passage of said pump cover, said upper piston prevents said pump cover passage of said pump cover from being in communication with said upper liquid storage chamber, when said conical body of said upper piston is withdrawn from said pump cover passage of said pump cover, said upper piston allows said pump cover passage of said pump cover to be in communication with said upper liquid storage chamber.

10. The time delay spray pump of any one of claims 1 to 9 wherein a bottom wall of said pump body for forming said pump chamber has a boss, a peripheral wall of said pump body has a groove, a height dimension of said boss is smaller than a height dimension of said groove, a middle portion of said pump body has an air outlet hole, said air outlet hole is in communication with said pump chamber, wherein when said lower piston moves to a bottom portion of said pump chamber of said pump body, said groove of said pump body is in communication with said lower liquid storage chamber and a space between said assembly member and said pump body.

11. The time delay spray pump of any one of claims 1 to 9 wherein said time delay spray pump comprises a cap, said cap is mounted on a top portion of said pump body, a portion of said pump cover extends above said cap after passing through a cap passage of said cap.

12. A spray device characterised in that, comprising: a bottle body; and a time delay spray pump of any one of claims 1 to 11, wherein said time delay spray pump is mounted on said bottle body. ​

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