A multi-body independent channel end-mixing spray device

Abstract

The application provides a multi-body independent channel end mixing spray device, which comprises a shell, a plurality of bottle bodies, a liquid suction pump with a moving stand column installed in each bottle body, a press head capable of being pressed up and down, a liquid outlet valve and a water core assembly fixed to the press head, a plurality of liquid outlet channels, a sealing structure for blocking two adjacent liquid outlet channels and a mixing cavity arranged at the upper end of the liquid outlet channels are arranged in the water core assembly, the moving stand columns of the plurality of liquid suction pumps are fixed to the water core assembly, the plurality of liquid suction pumps and the plurality of liquid outlet channels are one-to-one corresponding, and the liquid suction outlets are communicated with the liquid outlet channels, the upper ends of the plurality of liquid outlet channels are communicated with the mixing cavity, the mixing cavity is communicated with an inlet at the lower end of the liquid outlet valve, and an outlet at the upper end of the liquid outlet valve is communicated with a spray opening. When the application is used, a plurality of kinds of liquid medicine are independently separated for liquid outlet, and are only mixed in the mixing cavity at the end of the liquid outlet channel, so that only a small amount of mixed liquid is left in the mixing cavity, and the storage of the liquid medicine with timeliness requirement is very well met.

Description

Technical Field

[0001] This invention relates to a drug delivery device, and more particularly to a spray device for end-mixing of multiple independent channels. Background Technology

[0002] Currently, liquid medications are typically supplied in two forms: mixed-dose spray devices and mixed-dose pumps; however, both have some drawbacks.

[0003] For mixed-drug spray devices: liquid medications are manually prepared before being assembled with a spray pump for administration. However, this is inconvenient to operate, and the manual mixing of liquid medications makes the quantitative control of the solution very inaccurate, which affects the effectiveness of the medication.

[0004] For mixing pumps, there are two types: single-unit pumps and dual-unit pumps. The most commonly used mixing pump on the market is the single-unit pump, which simultaneously draws in two different solutions, mixing them directly within the pump body. However, single-unit pumps cannot accurately control the amount of solution drawn into different channels, resulting in inaccurate mixing. Furthermore, the mixing location in a single-unit pump is inside the pump body, meaning the solutions are mixed before use, making it impossible to ensure mixing only during application. Dual-unit pumps use two separate pump bodies to draw in two different solutions, but the two solutions are mixed in the outlet channels, again failing to ensure mixing only during application. Therefore, regardless of whether a single-unit or dual-unit pump is used, the solution is mixed only in the outlet channels, resulting in a large residual volume that cannot meet the storage requirements for time-sensitive solutions. Additionally, current mixing pump nozzles are generally designed with an open design, allowing the liquid inside the nozzle to directly contact the outside air when not in use, causing contamination. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a spray device for mixing at the end of multiple independent channels, which enables the solution to be mixed only at the end of the outlet channel.

[0006] To achieve the above objectives, the present invention provides a multi-body independent channel end-mixing spray device, comprising a housing, several bottles installed within the housing, a liquid suction pump installed in each bottle and having a movable column, a push-button that can be pressed up and down, and a liquid outlet valve and a water core assembly fixed to the push-button. The upper end of the push-button has a spray port, the liquid suction outlet of the liquid suction pump is located at the upper end of the movable column, and the liquid outlet valve is located at the lower end of the spray port. The water core assembly has several liquid outlet channels, a sealing structure for blocking two adjacent liquid outlet channels, and a mixing chamber located at the upper end of the several liquid outlet channels. The movable columns of the several liquid suction pumps are all fixed to the water core assembly. The several liquid suction pumps and the several liquid outlet channels correspond one-to-one, and the liquid suction outlet is connected to the liquid outlet channel. The upper end of the several liquid outlet channels is connected to the mixing chamber. The mixing chamber is connected to the inlet at the lower end of the liquid outlet valve, and the outlet at the upper end of the liquid outlet valve is connected to the spray port.

[0007] Furthermore, the water core assembly includes an upper water core and a lower water core, both fixed to the push-button, which are sleeved together. The liquid outlet channel and sealing structure are both located at the sleeve of the upper and lower water cores, and the movable columns of several suction pumps are fixedly installed on the lower water core.

[0008] Furthermore, the upper water core includes a first cylindrical section extending vertically, a first flat plate section extending radially straight from the lower end of the first cylindrical section, and a first flange extending vertically upward from the outer end of the first flat plate section. The lower water core includes a second cylindrical section extending vertically, a second flat plate section extending radially straight from the lower end of the second cylindrical section, and a second flange extending vertically upward from the outer end of the second flat plate section. The first cylindrical section is sleeved on the outer periphery of the second cylindrical section, the first flat plate section is located on the upper end side of the second flat plate section, and the first flange is sleeved on the inner periphery of the second flange. Each liquid outlet channel includes a vertical channel formed between the first cylindrical section and the second cylindrical section, and a horizontal channel formed between the first flat plate section and the second flat plate section. The liquid suction outlet, the horizontal channel, and the vertical channel are connected in a one-to-one correspondence.

[0009] Furthermore, the sealing structure includes a tight fit structure between the first shaft cylinder portion and the second shaft cylinder portion, a tight fit structure between the first flat plate portion and the second flat plate portion, and a tight fit structure between the first flange and the second flange. The vertical channel is a first groove formed on the inner circumferential surface of the first shaft cylinder portion, and the horizontal channel is a second groove formed on the lower end surface of the first flat plate portion.

[0010] Furthermore, the upper end of the first shaft cylinder is provided with an extension section that is higher than the second shaft cylinder, and the lower part of the liquid outlet valve is tightly fitted in the extension section. An annular groove is formed on the outer circumferential surface of the lower end of the liquid outlet valve, and the annular groove constitutes the mixing chamber.

[0011] Furthermore, the press head is provided with a first fixed cylinder portion and a second fixed cylinder portion located on the outer periphery of the first fixed cylinder portion. An insertion groove is opened on the outer periphery of the first cylinder portion. The first fixed cylinder portion is tightly inserted into the insertion groove, and the second flange is tightly inserted into the second fixed cylinder portion.

[0012] Furthermore, the lower end surface of the second plate is provided with several downwardly extending mounting cylinders that correspond one-to-one with several suction pumps. The upper end of the movable column of the suction pump is fixed in the mounting cylinder. The second plate is provided with a vertically penetrating liquid outlet at the upper end of each mounting cylinder. The suction outlet is connected to the horizontal channel through the liquid outlet.

[0013] Furthermore, the spraying device also includes snap-on caps fixed to the outer shell and the upper ends of several bottles, and several limiting collars fixed to the snap-on caps. Each of the limiting collars corresponds to a liquid suction pump, and the movable column of the liquid suction pump is movably inserted into the limiting collar. When the push button is pressed, the lower end of the mounting cylinder on the lower water core can abut against the limiting collar.

[0014] Furthermore, the push-button, the dispensing valve, and the water core assembly form a first assembly; the snap-on cap, several limiting collars, and several suction pumps form a second assembly; and the outer shell and several bottle bodies form a third assembly.

[0015] Furthermore, the suction pump also includes a pump housing fixed inside the bottle, a suction tube fixed at the lower end of the pump housing, a first piston fixed at the lower end of the movable column, a second piston movably mounted inside the pump housing, and a first spring and a second spring extending vertically. The first piston includes a piston rod inserted into the movable column and a piston head located outside the movable column. A suction channel is formed between the movable column and the piston rod. The suction channel, the inner cavity of the movable column, and the suction outlet are sequentially connected. The movable column is movably mounted in the second piston. The upper and lower ends of the first spring abut against the piston head and the inner wall of the pump housing, respectively. The upper and lower ends of the second spring abut against the movable column and the second piston, respectively. When the movable column and the first piston move upward, a suction chamber is formed between the piston head and the lower end of the second piston. The inner cavity of the pump housing is connected to the suction channel through the suction chamber.

[0016] Furthermore, the lower end of the second piston is provided with a first sealing flange and a second sealing flange located on the outer periphery of the first sealing flange. The first sealing flange can abut against the piston head and block the inner cavity of the pump housing and the liquid suction channel. The second sealing flange is in a sealing sliding fit with the inner wall of the pump housing.

[0017] Furthermore, the suction pump also includes a steel ball disposed inside the pump housing, the steel ball being located below the first piston and the second piston, and a support boss being provided inside the pump housing; when the steel ball abuts against the support boss, the steel ball blocks the inner cavity of the pump housing; when the steel ball moves upward away from the support boss, the inner cavity of the pump housing is unobstructed.

[0018] Furthermore, the spraying device also includes a dust cover, which is detachably attached to the nozzle and used to cover the spray nozzle.

[0019] Furthermore, the discharge valve is a one-way discharge valve.

[0020] As described above, the spray device for multi-body independent channel end mixing of the present invention has the following beneficial effects:

[0021] In this application, the liquid in each bottle is drawn into the corresponding outlet channel by a pump within each bottle. The sealing structure in the water core assembly ensures that the outlet channels are not interconnected, so the liquid remains unmixed within the outlet channels. The various liquids are mixed only in the mixing chamber at the end of the outlet channel. Under its own pressure, the liquid enters the outlet valve and is then sprayed out from the spray nozzle at the top of the applicator, thus achieving mixed-liquid drug delivery. Therefore, this application stores several medications independently in several bottles. When in use, the medications are dispensed separately and mixed only in the mixing chamber at the end of the outlet channel, without pre-mixing within the outlet channel. This results in a smaller mixing space, leaving only a very small amount of mixed liquid in the mixing chamber, which perfectly meets the storage requirements for medications with time-sensitive mixing, such as some special medications that only produce efficacy upon mixing but lose their efficacy after prolonged mixing. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the multi-body independent channel end-mixing spray device in this application.

[0023] Figure 2 for Figure 1 A schematic diagram of the structure of the liquid outlet valve and the water core assembly.

[0024] Figure 3 for Figure 1 A sectional view along line AA.

[0025] Figure 4 for Figure 3 A schematic diagram of the structure of the liquid outlet valve and the water core assembly.

[0026] Figure 5 This is a structural schematic diagram of the first assembly in this application.

[0027] Figure 6 This is a structural schematic diagram of the second assembly in this application.

[0028] Figure 7 This is a structural schematic diagram of the third assembly in this application.

[0029] Component designation explanation

[0030] 10. Outer shell

[0031] 20 bottles

[0032] 30 movable columns

[0033] 31 Liquid suction outlet

[0034] 40 press head

[0035] 41 Spray nozzle

[0036] 42 First fixed cylinder section

[0037] 43 Second fixed cylinder section

[0038] 50 Discharge valve

[0039] 51 Fixed flange

[0040] 60 Discharge Channel

[0041] 61 Vertical passage

[0042] 62 Horizontal Channels

[0043] 70 Mixing Chamber

[0044] 80 water core

[0045] 81 First shaft section

[0046] 82 First Flat Section

[0047] 83 First Wing Edge

[0048] 84 Extension

[0049] 85 Socket

[0050] 90 drain core

[0051] 91 Second shaft section

[0052] 92 Second Flat Section

[0053] 93 Second Wing Edge

[0054] 94 Installation cylinder

[0055] 95 Liquid outlet connection port

[0056] 110 snap-on cover

[0057] 111 Cover body

[0058] 112 Wing Edge

[0059] 113 First Insertion Sleeve Section

[0060] 114 Second Insertion Section

[0061] 120 Limiting the size of the garment

[0062] 121 Limiting flange

[0063] 130 Pump Housing

[0064] 131 Support Boss

[0065] 140 straws

[0066] 150 First Piston

[0067] 151 Piston rod section

[0068] 152 Piston Head

[0069] 160 Second Piston

[0070] 161 First sealing flange

[0071] 162 Second sealing flange

[0072] 170 First Spring

[0073] 180 Second Spring

[0074] 190 suction channel

[0075] 200 steel balls

[0076] 210 Dust Cover Detailed Implementation

[0077] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0078] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and objectives of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0079] This application provides a multi-body independent channel end-mixing spray device for the mixed spray administration of different drug solutions. For example... Figure 1 and Figure 3 As shown, the spraying device involved in this application includes a housing 10, several bottles 20 all installed inside the housing 10, a liquid pump installed in each bottle 20, a pressable head 40, and a liquid outlet valve 50 and a water core assembly fixed to the pressable head 40. The upper end of the pressable head 40 has a spray nozzle 41. Each liquid pump has a movable column 30 that can move up and down reciprocally. The liquid outlet 31 of the liquid pump is located at the upper end of the movable column 30, and the liquid outlet valve 50 is located at the lower end of the spray nozzle 41. Specifically, the water core assembly includes several liquid outlet channels 60, a sealing structure for blocking adjacent liquid outlet channels 60, and a mixing chamber 70 located at the upper end of the several liquid outlet channels 60. Figure 1 and Figure 2 The view shown depicts the outlet channel 60 of the water core assembly. Figure 3 and Figure 4 The view shown illustrates the sealing structure of the water core assembly, which prevents adjacent outlet channels 60 from communicating with each other. Furthermore, the movable columns 30 of several suction pumps are fixed to the water core assembly, so the push-button 40, outlet valve 50, water core assembly, and movable columns 30 of the suction pumps move synchronously downwards or upwards. Each suction pump corresponds to one outlet channel 60, and the suction outlet 31 is connected to the outlet channel 60; that is, each bottle 20 corresponds to an independent suction pump and an independent outlet channel 60. The upper ends of each outlet channel 60 are connected to the mixing chamber 70, which is connected to the inlet at the lower end of the outlet valve 50, and the outlet at the upper end of the outlet valve 50 is connected to the spray nozzle 41.

[0080] In the above-mentioned spraying device, each bottle 20 is used to store a medicinal solution, so the spraying device can store multiple medicinal solutions. The number of bottles 20 is determined according to the actual types of medicinal solutions being mixed. In this embodiment, as shown... Figure 1 and Figure 3 As shown, the outer casing 10 contains two bottles 20, each containing a liquid. The spray device mixes the liquids from the two bottles 20 and sprays them into the drug. The outer casing 10 secures the two bottles 20 for overall packaging. When not in use, the pusher 40 is in its initial position, at the top of its travel. When in use, pressing down on the pusher 40 causes the dispensing valve 50, the water core assembly, and the suction pump's moving column 30 to move downwards. Releasing the pusher 40 and allowing it to return to its original position causes the pusher 40, dispensing valve 50, water core assembly, and suction pump's moving column 30 to move upwards and return to their original position. During this process, the suction pump draws the liquid from its respective bottle 20. The drawn liquid enters its corresponding dispensing channel 60 from the suction outlet 31 at the top of the suction pump. Due to the sealing structure in the water core assembly, the liquid flows through multiple channels... Since the liquid channels 60 are not interconnected, the liquids are in an unmixed state within the outlet channels 60. The various liquids are mixed only in the mixing chamber 70 at the end of the outlet channels 60. Finally, the mixed liquid in the mixing chamber 70 enters the outlet valve 50 under its own pressure. The outlet valve 50 controls the direction of the mixed liquid and atomizes it. The atomized mixed liquid enters the spray nozzle 41 at the top of the massage head 40 through the outlet of the outlet valve 50 and is sprayed out from the spray nozzle 41, thus achieving mixed spray administration of different liquids. Therefore, this application stores several liquids independently in several bottles 20. When in use, the liquids are dispensed separately and mixed only in the mixing chamber 70 at the end of the outlet channels 60, without pre-mixing within the outlet channels 60. This results in a smaller mixing space, leaving only a very small amount of mixed liquid in the mixing chamber 70, which perfectly meets the storage requirements for liquids with time-sensitive effects, such as some special liquids that only produce efficacy during mixing but lose their efficacy after prolonged mixing.

[0081] Preferably, the discharge valve 50 is a one-way discharge valve, controlling that the liquid can only flow upward from the lower inlet to the upper outlet under its own liquid pressure, and cannot flow downward from the upper outlet back to the lower inlet. That is, the one-way discharge valve remains sealed when not under liquid pressure, effectively preventing external contaminants from entering the mixing chamber 70, the discharge channel 60, and the internal channels of the aspiration pump and other spraying devices. Additionally, as... Figure 1 and Figure 3As shown, the spray device also includes a dust cover 210, which is detachably fitted onto the nozzle 40. When the spray device is not in use, the dust cover 210 is placed on the nozzle 40, thus covering the spray nozzle 41 at the upper end of the nozzle 40, forming a closed structure at the spray nozzle 41, preventing the nozzle 40 from being contaminated, and effectively isolating external pollutants from entering the internal channel of the spray device. When the spray device is in use, the dust cover 210 is removed. The outer shell 10 is circular, and each bottle 20 is semi-circular. The inner surfaces of the two semi-circular bottles 20 are fitted together and placed inside the shell.

[0082] Furthermore, such as Figures 1 to 4 As shown, the water core assembly includes an upper water core 80 and a lower water core 90, both fixed to the push head 40. The upper water core 80 and the lower water core 90 are sleeved together. The liquid outlet channel 60 and the sealing structure are both set at the sleeve of the upper water core 80 and the lower water core 90. The movable columns 30 of the two suction pumps are both fixedly installed on the lower water core 90. The preferred configuration of the outlet channel 60 and the sealing structure is as follows: the upper water core 80 includes a vertically extending first cylindrical portion 81, a radially extending first flat plate portion 82 extending horizontally from the lower end of the first cylindrical portion 81, and a vertically extending first flange 83 extending vertically upward from the outer end of the first flat plate portion 82; the lower water core 90 includes a vertically extending second cylindrical portion 91, a radially extending second flat plate portion 92 extending horizontally from the lower end of the second cylindrical portion 91, and a vertically extending second flange 93 extending vertically upward from the outer end of the second flat plate portion 92; the first cylindrical portion 81 is sleeved on the outer periphery of the second cylindrical portion 91, the first flat plate portion 82 is located on the upper end side of the second flat plate portion 92, and the first flange 83 is sleeved on the inner periphery of the second flange 93, thereby realizing the sleeve connection between the upper water core 80 and the lower water core 90. Figure 1 and Figure 2 As shown, each outlet channel 60 between the upper water core 80 and the lower water core 90 includes a vertical channel 61 formed between the first shaft cylinder 81 and the second shaft cylinder 91, and a horizontal channel 62 formed between the first flat plate 82 and the second flat plate 92. The horizontal channel 62 is located at the lower end of the vertical channel 61. The suction outlet 31, the horizontal channel 62, and the vertical channel 61 are connected in a one-to-one correspondence. The liquid flowing out of the suction outlet 31 of the suction pump passes through the horizontal channel 62 and the vertical channel 61 before flowing into the mixing chamber 70. Figure 3 and Figure 4As shown, the sealing structure between the upper water core 80 and the lower water core 90 includes a tight-fitting structure between the first shaft cylinder portion 81 and the second shaft cylinder portion 91, a tight-fitting structure between the first flat plate portion 82 and the second flat plate portion 92, and a tight-fitting structure between the first flange 83 and the second flange 93. The vertical channel 61 is a first groove formed on the inner circumferential surface of the first shaft cylinder portion 81, and the horizontal channel 62 is a second groove formed on the lower end surface of the first flat plate portion 82, extending straight outward from the lower end of the first groove. Thus, the tight-fitting structure between the first shaft cylinder portion 81 and the second shaft cylinder portion 91 seals between the two vertical channels 61, preventing the two vertical channels 61 from communicating with each other; the tight-fitting structure between the first flat plate portion 82 and the second flat plate portion 92 seals between the two horizontal channels 62, and the tight-fitting structure between the first flange 83 and the second flange 93 further seals the outer ends of the two horizontal channels 62, preventing the two horizontal channels 62 from communicating with each other.

[0083] Preferably, the sealing structure between the upper water core 80 and the lower water core 90 can fix the upper water core 80 and the lower water core 90 while isolating the two liquid outlet channels 60. For example... Figure 1 , Figure 3 and Figure 5 As shown, the push-button 40 has a first fixed cylinder 42 and a second fixed cylinder 43 located on the outer periphery of the first fixed cylinder 42. Both the first fixed cylinder 42 and the second fixed cylinder 43 extend vertically. The outer periphery of the first shaft cylinder 81 in the upper water core 80 has an upward-opening insertion groove 85, and the first fixed cylinder 42 is tightly inserted into the insertion groove 85. The second flange 93 at the outer end of the lower water core 90 is tightly inserted into the second fixed cylinder 43. In this way, the upper water core 80 and the lower water core 90 are reliably fixed in the push-button 40. The outer periphery of the upper part of the dispensing valve 50 is provided with a fixed flange 51, which is tightly fixed to the inner wall of the push-button 40, thereby fixing the dispensing valve 50 in the push-button 40 and achieving a seal between the dispensing valve 50 and the push-button 40.

[0084] Furthermore, such as Figure 2 , Figure 4 and Figure 5As shown, the upper end of the first shaft cylinder 81 is provided with an extension section 84 that is higher than the second shaft cylinder 91. The lower part of the dispensing valve 50 is tightly fitted in the extension section 84. An annular groove is formed on the outer circumferential surface of the lower end of the dispensing valve 50, which constitutes the mixing chamber 70. The tight fit between the dispensing valve 50 and the extension section 84 reliably fixes the dispensing valve 50 in the pusher head 40, and also blocks the upper end of the mixing chamber 70, so that the mixed medicine in the mixing chamber 70 can only enter the dispensing valve 50. The fixing structure between the movable column 30 of the suction pump and the lower water core 90 is as follows: the lower end surface of the second flat plate part 92 in the lower water core 90 is provided with two downwardly extending mounting cylinder parts 94, which correspond one-to-one with the two suction pumps. The upper end of the movable column 30 in the suction pump is fixed in the mounting cylinder part 94. The second flat plate part 92 is provided with a vertically penetrating liquid outlet 95 at the upper end of each mounting cylinder part 94. The suction outlet 31 is connected to the horizontal channel 62 through the liquid outlet 95.

[0085] Furthermore, such as Figure 1 , Figure 3 and Figure 6The suction pump includes a pump housing 130 fixed inside the bottle body 20, a suction tube 140 fixed at the lower end of the pump housing 130, a first piston 150 fixed at the lower end of the movable column 30, a second piston 160 movably mounted inside the pump housing 130, and a first spring 170 and a second spring 180 extending vertically. The lower end of the suction tube 140 extends to the bottom of the bottle body 20, allowing the liquid inside the bottle body 20 to be effectively and completely drawn out. The first piston 150 includes a piston rod portion inserted into the movable column 30. 151, and a piston head 152 located outside the movable column 30, the piston head 152 being integrally formed at the lower end of the piston rod portion 151; a liquid suction channel 190 is formed between the movable column 30 and the piston rod portion 151, the liquid suction channel 190 being a groove formed on the inner wall of the movable column 30 or a groove formed on the outer wall of the piston rod portion 151, the liquid suction channel 190, the inner cavity of the movable column 30, and the liquid suction outlet 31 being sequentially connected; the movable column 30 is movably mounted in the second piston 160; first The upper and lower ends of spring 170 abut against the piston head 152 and the inner wall of pump housing 130, respectively, to drive the first piston 150 to return to its original position when the push-button 40 is pressed down and then released. This drives the moving column 30, upper water core 80, lower water core 90, liquid outlet valve 50, and push-button 40 to move upward and return to their original position together. The upper and lower ends of the second spring 180 abut against the moving column 30 and the second piston 160, respectively. During the upward and return process of the first piston 150 and the moving column 30, the liquid that is sucked up acts on the second piston 160, driving... The second piston 160 is moved upward and the second spring 180 is compressed, thereby allowing a suction chamber to be formed between the piston head 152 of the first piston 150 and the lower end of the second piston 160. The inner cavity of the pump housing 130 is connected to the suction channel 190 through the suction chamber. The medicine liquid sucked into the inner cavity of the pump housing 130 enters the suction chamber and then flows into the suction channel 190, the inner cavity of the moving column 30, the suction outlet 31, the liquid outlet 95, the horizontal channel 62, the vertical channel 61 and the mixing chamber 70 in sequence, and finally flows into the liquid outlet valve 50.

[0086] Preferably, such as Figure 1 , Figure 3 and Figure 6The lower end of the second piston 160 is provided with a first sealing flange 161 and a second sealing flange 162 located on the outer periphery of the first sealing flange 161. The second sealing flange 162 of the second piston 160 is in a sealing sliding fit with the inner wall of the pump housing 130 to ensure the seal between the second piston 160 and the pump housing 130. In the state other than the first piston 150 and the moving column 30 moving upward and returning to their original positions, the force of the second spring 180 causes the first sealing flange 161 at the lower end of the second piston 160 to abut against the piston head 152 of the first piston 150, thereby sealing the inner cavity of the pump housing 130 and the liquid suction channel 190, closing the liquid suction chamber, or in other words, making the liquid suction chamber disappear; in the state where the first piston 150 and the moving column 30 are moving upward and returning to their original positions, the liquid pressure causes the second piston 160 to move upward, and the annular area between the second piston 160 and the first piston 150 forms the liquid suction chamber. In addition, the suction pump also includes a steel ball 200 disposed inside the pump housing 130. The steel ball 200 is located below the first piston 150 and the second piston 160. The pump housing 130 is provided with a support boss 131. When the spray device is in a state other than the first piston 150 and the moving column 30 moving upward and resetting, the steel ball 200 abuts against the support boss 131. At this time, the steel ball 200 blocks the lower end of the inner cavity of the pump housing 130. When the first piston 150 and the moving column 30 are in a state of moving upward and resetting, liquid is drawn in. Under the action of liquid pressure, the steel ball 200 moves upward and disengages from the support boss 131. At this time, the inner cavity of the pump housing 130 is unobstructed.

[0087] Furthermore, such as Figure 1 , Figure 3 and Figure 6As shown, the spraying device also includes a snap-on cap 110 fixed to the upper end of the outer shell 10 and several bottles 20, and several limiting collars 120. Each limiting collar 120 corresponds to a liquid suction pump, so there are two limiting collars 120. The snap-on cap 110 includes a straight cap body 111, a cap flange 112 extending upward from the outer end of the cap body 111, and a set of insert tubes extending downward from the lower end surface of the cap body 111. Two limiting collars 120 are fixed to the cap body 111 of the snap-on cap 110. The number of insert tubes corresponds one-to-one with the aspiration pump and the bottle 20, and is used to fix the aspiration pump and the bottle 20. Each set of insert tubes includes a first insert tube 113 and a second insert tube 114 located on the outer periphery of the first insert tube 113. The lower end of the first insert tube 113 is engaged with the outer wall of the upper end of the pump housing 130, and the lower end of the second insert tube 114 is engaged with the outer wall of the upper end of the bottle 20. The outer periphery of the lower end of the cap flange 112 is tightly fitted and fixed with the inner periphery of the upper end of the housing 10, thereby sealing the bottle mouth of the bottle 20. The upper part of the cover flange 112 extends into the push-button 40 and slides with it, providing guidance for the up-and-down movement of the push-button 40. The limiting collar 120 extends into the upper end of the pump housing 130, and the two are tightly fitted and fixed. A limiting flange 121 is provided around the outer periphery of the upper end of the limiting collar 120, and the limiting flange 121 abuts against the top surface of the pump housing 130. The movable column 30 of each suction pump can be moved up and down through its corresponding limiting collar 120. When the push-button 40 is pressed, the lower end of the mounting cylinder 94 on the lower water core 90 can abut against the limiting collar 120, thereby controlling the downward movement distance of the lower water core 90, which in turn controls the downward movement distance of the movable column 30 in the suction pump. This controls the amount of liquid drawn by the suction pump after each downward press of the push-button 40, resulting in very precise liquid dosage and achieving precise drug administration. The liquid supply pressure is balanced, thus ensuring the dosage accuracy of the drug mixture. The height of the limiting collar 120 is determined according to the actual dosage of the corresponding drug solution: before the limiting collar 120 is installed and fixed, its height is adjustable; after the limiting collar 120 is installed and fixed, its height is uniquely determined. In addition, the outer periphery of the movable column 30 is provided with a radially protruding flange, which can abut against the limiting collar 120 and is used for limiting the movable column 30 when it moves upward and resets.

[0088] Furthermore, such as Figures 5 to 7As shown, the above-mentioned spraying device is assembled in three groups: the first group consists of a dust cover 210, a pusher head 40, a liquid outlet valve 50, and a water core assembly, forming the first assembly; the second group consists of a snap-on cover 110, several limiting tabs 120, and several suction pumps, forming the second assembly; and the third group consists of a housing 10 and several bottles 20, forming the third assembly. More specifically, when assembling the first assembly, the liquid outlet valve 50, the upper water core 80, and the lower water core 90 are installed successively inside the pusher head 40; when assembling the second assembly, the movable column 30 is first installed at the upper end of the pump housing 130, then the limiting tabs 120 are installed at the upper end of the pump housing 130, then the suction tube 140 is installed at the lower end of the pump housing 130, and finally the snap-on cover 110 is installed; when assembling the third assembly, the two bottles 20 are installed into the housing 10. Finally, the first assembly, the second assembly, and the third assembly are assembled into a complete spray device.

[0089] The working principle of the spray device with the above structure is as follows:

[0090] In the initial state, such as Figure 1 and Figure 3 As shown, the dust cover 210 covers the upper end of the pusher 40. Under the action of the first spring 170, the pusher 40, the liquid outlet valve 50, the upper water core 80, the lower water core 90, and the moving column 30 are all located at the upper limit position of their respective strokes. The second spring 180 causes the first sealing flange 161 at the lower end of the second piston 160 to abut against the piston head 152 of the first piston 150, closing the suction chamber. The steel ball 200 abuts against the support boss 131 inside the pump housing 130, sealing the inner cavity at the lower end of the pump housing 130. The mounting cylinder 94 on the lower water core 90 is located above the limiting collar 120. Therefore, the inner cavity between the pump housing 130 and the bottle body 20 is blocked by the steel ball 200, and the two are not connected. The inner cavity between the pump housing 130 and the suction channel 190 is blocked by the abutment and mating structure of the second piston 160 and the first piston 150, and the two are not connected.

[0091] When using the spray device, remove the dust cover 210 and press the pusher 40. The pusher 40 will cause the liquid outlet valve 50, the upper water core 80, the lower water core 90 and the moving column 30 to move down together until the mounting cylinder 94 on the lower water core 90 abuts against the limiting collar 120. The first piston 150 moves down with the moving column 30, the first spring 170 is compressed, and the moving column 30 also drives the second piston 160 to move down through the second spring 180. As a result, the volume of the inner cavity of the pump housing 130 located below the second piston 160 and the first piston 150 becomes smaller. When the pusher 40 is released, the first piston 150 moves upward and resets under the action of the first spring 170. The moving column 30, lower water core 90, upper water core 80, outlet valve 50, and pusher 40 move upward and reset together with the first piston 150. This increases the volume of the inner cavity of the pump housing 130 located below the second piston 160 and the first piston 150, thereby drawing the liquid from the bottle 20 into the pump housing 130. The liquid pushes the steel ball 200 upward and acts on the first piston 150 and the second piston 160. The second piston 160 then... As the pump moves downwards, the second spring 180 is compressed, simultaneously creating a suction chamber between the first piston 150 and the second piston 160. The liquid medication inside the pump housing then flows sequentially from the suction chamber through the suction channel 190, the inner cavity of the moving column 30, the suction outlet 31, the outlet connection port 95, the horizontal channel 62, the vertical channel 61, and the mixing chamber 70. Under its own pressure, the mixed liquid medication in the mixing chamber 70 enters the outlet valve 50, which atomizes the mixed liquid medication and sprays it out from the spray nozzle 41. This achieves the mixed spray administration of different liquid medications. Therefore, this spray device is simple to operate, ensuring that the liquid medication is mixed only at the end of the outlet channel 60, and enabling precise quantitative administration.

[0092] In summary, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0093] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A multi-body independent channel end-mixing spray device, comprising a housing (10), several bottles (20) all installed inside the housing (10), a liquid pump installed in each bottle (20) and having a movable column (30), and a press head (40) capable of being pressed up and down, wherein the upper end of the press head (40) is provided with a spray nozzle (41), and the liquid pump's liquid outlet (31) is located at the upper end of the movable column (30), characterized in that: It also includes a liquid outlet valve (50) and a water core assembly, both fixed to the push head (40). The liquid outlet valve (50) is located at the lower end of the spray nozzle (41). The water core assembly has several liquid outlet channels (60), a sealing structure for blocking two adjacent liquid outlet channels (60), and a mixing chamber (70) located at the upper end of the several liquid outlet channels (60). The movable columns (30) of several suction pumps are fixed to the water core assembly. The several suction pumps and several liquid outlet channels (60) correspond one-to-one, and the suction outlet (31) is connected to the liquid outlet channel (60). The upper end of the several liquid outlet channels (60) is connected to the mixing chamber (70). The mixing chamber (70) is connected to the inlet at the lower end of the liquid outlet valve (50). The outlet at the upper end of the liquid outlet valve (50) is connected to the spray nozzle (41). The water core assembly includes an upper water core (80) and a lower water core (90) both fixed to the pusher (40). The upper water core (80) and the lower water core (90) are sleeved together. The liquid outlet channel (60) and the sealing structure are both located at the sleeve of the upper water core (80) and the lower water core (90). The movable columns (30) of several suction pumps are all fixedly installed on the lower water core (90). The upper water core (80) includes a vertically extending first cylindrical portion (81), a radially extending first flat portion (82) from the lower end of the first cylindrical portion (81), and a vertically extending first flange (83) from the outer end of the first flat portion (82). The lower water core (90) includes a vertically extending second cylindrical portion (91), a radially extending second flat portion (92) from the lower end of the second cylindrical portion (91), and a vertically extending second flange (93) from the outer end of the second flat portion (92). The first cylindrical portion (81) is fitted with... The first flat plate (82) is located on the upper side of the second flat plate (92) and connected to the outer periphery of the second shaft cylinder (91). The first flange (83) is sleeved on the inner periphery of the second flange (93). Each liquid outlet channel (60) includes a vertical channel (61) formed between the first shaft cylinder (81) and the second shaft cylinder (91) and a horizontal channel (62) formed between the first flat plate (82) and the second flat plate (92). The liquid suction outlet (31), the horizontal channel (62) and the vertical channel (61) are connected in a one-to-one correspondence.

2. The spraying device according to claim 1, characterized in that: The sealing structure includes a tight fit structure between the first shaft cylinder (81) and the second shaft cylinder (91), a tight fit structure between the first flat plate (82) and the second flat plate (92), and a tight fit structure between the first flange (83) and the second flange (93). The vertical channel (61) is a first groove formed on the inner circumferential surface of the first shaft cylinder (81), and the horizontal channel (62) is a second groove formed on the lower end surface of the first flat plate (82).

3. The spraying device according to claim 1 or 2, characterized in that: The upper end of the first shaft cylinder (81) is provided with an extension section (84) that is higher than the second shaft cylinder (91). The lower part of the liquid outlet valve (50) is tightly fitted in the extension section (84). An annular groove is formed on the outer peripheral surface of the lower end of the liquid outlet valve (50), and the annular groove constitutes the mixing chamber (70).

4. The spraying device according to claim 1, characterized in that: The push head (40) is provided with a first fixed cylinder (42) and a second fixed cylinder (43) located on the outer periphery of the first fixed cylinder (42). The outer periphery of the first cylinder (81) is provided with an insertion groove (85). The first fixed cylinder (42) is tightly inserted into the insertion groove (85), and the second flange (93) is tightly inserted into the second fixed cylinder (43).

5. The spraying device according to claim 1, characterized in that: The lower end face of the second plate part (92) is provided with several downward extending mounting cylinders (94) that correspond one-to-one with several suction pumps. The upper end of the movable column (30) in the suction pump is fixed in the mounting cylinder (94). The second plate part (92) has a vertically penetrating liquid outlet (95) at the upper end of each mounting cylinder (94). The suction outlet (31) is connected to the horizontal channel (62) through the liquid outlet (95).

6. The spraying device according to claim 5, characterized in that: It also includes a snap-on cap (110) fixed to the upper end of the outer shell (10) and several bottles (20), and several limiting collars (120) fixed to the snap-on cap (110). The several limiting collars (120) correspond one-to-one with the suction pump, and the movable column (30) of the suction pump can be moved up and down through the limiting collars (120). When the push-button (40) is pressed, the lower end of the mounting cylinder (94) on the lower water core (90) can abut against the limiting collars (120).

7. The spraying device according to claim 6, characterized in that: The push-button (40), the liquid outlet valve (50) and the water core assembly are assembled to form a first assembly. The snap-on cap (110), several limiting collars (120) and several suction pumps are assembled to form a second assembly. The outer shell (10) and several bottle bodies (20) are assembled to form a third assembly.

8. The spraying device according to claim 1 or 5, characterized in that: The aspiration pump also includes a pump housing (130) fixed inside the bottle body (20), a suction tube (140) fixed at the lower end of the pump housing (130), a first piston (150) fixed at the lower end of the movable column (30), a second piston (160) movably mounted inside the pump housing (130), and a first spring (170) and a second spring (180) extending vertically. The first piston (150) includes a piston rod (151) inserted into the movable column (30) and a piston head (152) located outside the movable column (30). A suction channel (190) is formed between the movable column (30) and the piston rod (151). The inner cavity of the channel (190), the movable column (30), and the liquid suction outlet (31) are connected in sequence. The movable column (30) is mounted in the second piston (160) in a vertically movable manner. The upper and lower ends of the first spring (170) abut against the piston head (152) and the inner wall of the pump housing (130) respectively. The upper and lower ends of the second spring (180) abut against the movable column (30) and the second piston (160) respectively. When the movable column (30) and the first piston (150) move upward, a liquid suction chamber is formed between the lower ends of the piston head (152) and the second piston (160). The inner cavity of the pump housing (130) is connected to the liquid suction channel (190) through the liquid suction chamber.

9. The spraying device according to claim 8, characterized in that: The lower end of the second piston (160) is provided with a first sealing flange (161) and a second sealing flange (162) located on the outer periphery of the first sealing flange (161). The first sealing flange (161) can abut against the piston head (152) and block the inner cavity of the pump housing (130) and the liquid suction channel (190). The second sealing flange (162) is in a sealing sliding fit with the inner wall of the pump housing (130).

10. The spraying device according to claim 8, characterized in that: The suction pump also includes a steel ball (200) disposed inside the pump housing (130). The steel ball (200) is located below the first piston (150) and the second piston (160). The pump housing (130) is provided with a support boss (131). When the steel ball (200) abuts against the support boss (131), the steel ball (200) blocks the inner cavity of the pump housing (130). When the steel ball (200) moves upward away from the support boss (131), the inner cavity of the pump housing (130) is unobstructed.

11. The spraying device according to claim 1, characterized in that: It also includes a dust cover (210) that is detachably fitted onto the nozzle (40) for covering the spray nozzle (41).

12. The spraying device according to claim 1, characterized in that: The discharge valve (50) is a one-way discharge valve.

Images