Medicine mixer

Abstract

The medicine mixer comprises an upper medicine feeding shell and a lower medicine mixing shell, the upper medicine feeding shell is provided with a first medicine mixing cavity and at least two independent medicine adding cavities, the multiple medicine adding cavities communicate with the first medicine mixing cavity, and the bottom of the upper medicine feeding shell is provided with a first liquid outlet communicating with the first medicine mixing cavity; the lower medicine mixing shell is connected to one end of the first liquid outlet of the upper medicine inlet shell, the lower medicine mixing shell is provided with a second medicine mixing cavity communicated with the first liquid outlet, a spiral medicine mixing part is arranged in the second medicine mixing cavity, and the lower medicine mixing shell is provided with a second liquid outlet; wherein the spiral medicine mixing part is provided with multiple layers of incoherent inclined flow guide faces in the axial direction, and medicine liquid enters the second medicine mixing cavity from the first liquid outlet, sequentially flows through the multiple layers of flow guide faces and flows out from the second liquid outlet. In the process that liquid medicine falls from the upper-layer flow guide face to the lower-layer flow guide face, the flowing path of the liquid medicine can be prolonged, the shearing force and the mixing degree of the liquid medicine are greatly increased, efficient and sufficient mixing is achieved, and sufficient mixing of the liquid medicine can be achieved through a simple structure.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a drug mixing device. Background Technology

[0002] In many fields such as medicine, chemical engineering, and biological agents, it is often necessary to thoroughly and uniformly mix two or more different drug solutions, reagents, or fluids. The quality of the mixing directly affects the efficacy of the final drug. For example, during intravenous infusion, uneven mixing of multiple drugs may lead to excessively high local drug concentrations, causing adverse reactions.

[0003] Currently, there are many types of devices for fluid mixing, which can be mainly classified into static mixers and dynamic mixers based on the mixing technology. Static mixers often have fixed blades or baffles inside, and the fluid is divided and merged as it flows over obstacles, thus achieving mixing. Dynamic mixers usually use built-in stirring devices to actively stir the fluid. However, although static mixers have a simple structure and do not require external power, their mixing effect is not good; while dynamic mixers can mix efficiently and uniformly, their structure is complex, requiring an additional power source and sealing structure, resulting in high cost and poor portability.

[0004] Therefore, existing fluid mixing devices struggle to simultaneously achieve both portability and uniform mixing. There is an urgent need for a simple, power-free mixing device capable of thoroughly mixing multi-component drug solutions to overcome the shortcomings of current technologies. Summary of the Invention

[0005] The purpose of this invention is to provide a mixing device that solves the problem that existing fluid mixing devices cannot simultaneously achieve both portability and mixing uniformity.

[0006] To achieve this objective, the present invention adopts the following technical solution: A drug mixer includes an upper inlet shell and a lower mixing shell. The upper inlet shell has a first mixing chamber and at least two independent dosing chambers. The multiple dosing chambers are all connected to the first mixing chamber. The bottom of the upper inlet shell has a first liquid outlet that communicates with the first mixing chamber. The mixing lower shell is connected to one end of the first liquid outlet of the drug inlet upper shell. The mixing lower shell has a second mixing chamber that communicates with the first liquid outlet. A spiral mixing part is provided in the second mixing chamber. The mixing lower shell has a second liquid outlet. The spiral mixing section has multiple discontinuous inclined guide surfaces along the axial direction, and the medicine flows through these multiple guide surfaces sequentially between the first liquid outlet and the second liquid outlet.

[0007] Optionally, the spiral medicine mixing part comprises a plurality of flow guides arranged in the axial direction, the flow guides have first flow guide slopes and second flow guide slopes, and liquid entering the second medicine mixing cavity from the first liquid outlet is distributed to the first flow guide slopes and the second flow guide slopes.

[0008] Optionally, the adjacent flow guides are arranged in a staggered manner, the edge of the first flow guide slope of the upper flow guide is projected in the second flow guide slope of the lower flow guide, and the edge of the second flow guide slope of the upper flow guide is projected in the first flow guide slope of the lower flow guide.

[0009] Optionally, the first flow guide slope and the second flow guide slope are both arc surfaces, the inclination and area of the two arc surfaces are different, the lower end edge of the first flow guide slope is arc-shaped, and the lower end edge of the second flow guide slope is straight.

[0010] Optionally, the medicine mixing upper shell and the medicine mixing lower shell are detachably connected.

[0011] Optionally, a proportion control assembly for controlling the mixing dose of the medicine liquid is arranged in the medicine adding cavity, and the proportion control assembly comprises: a dose control plate slidingly arranged in the medicine adding cavity, and a first liquid leakage hole being formed in the dose control plate; an overflow plate slidingly arranged in the medicine adding cavity and located above the dose control plate, a valve core hole being formed in the center of the overflow plate, and an overflow hole being formed around the valve core hole; a valve seat comprising a cover plate arranged above the overflow plate and a core column connected below the cover plate, the core column penetrating through the valve core hole, the cover plate being capable of covering the overflow hole, a first spring being sleeved on the core column, one end of the first spring being in abutment with the lower end surface of the overflow plate, and the other end of the first spring being fixedly connected with the core column; a fixed plate connected to the cover plate and located above the cover plate, a second liquid leakage hole being formed in the fixed plate, and the second liquid leakage hole being located outside the cover plate.

[0012] Optionally, a guide groove is formed in the sidewall of the medicine adding cavity in the axial direction, a guide block is arranged on the dose control plate, the guide block slides in the guide groove, the guide block has a positioning bayonet, and a plurality of positioning bayonet slots are formed in the groove bottom of the guide groove in the axial direction.

[0013] Optionally, a top rod is fixed to the upper end surface of the dose control plate, an insertion slot is formed in the bottom of the core column, the top rod is movably inserted into the insertion slot, a second spring is arranged between the top rod and the insertion slot, and a magnetic block is arranged on the bottom of the core column and the top of the top rod.

[0014] Optionally, a guide plate is arranged below the dose regulating plate, the guide plate is provided with a guide channel arranged obliquely at the bottom, and the outlet end of the guide channel is close to the cavity wall of the dosing cavity.

[0015] Compared with the prior art, the present application has the following beneficial effects: In the mixing device, a plurality of independent dosing cavities are provided for mixing a plurality of different liquid medicines, and the different liquid medicines are preliminarily mixed in the first mixing cavity. In actual operation, one kind of liquid medicine is first added, and the mixing device is inclined to temporarily store the liquid medicine in the first mixing cavity, and then other liquid medicines are added, which is beneficial to improve the operation convenience. Then, the liquid medicine flows into the second mixing cavity from the first liquid outlet, and directly flows on the spiral mixing part, and falls from the uppermost guide surface to the lower guide surface in sequence and flows through each layer of guide surface, and finally flows out from the second liquid outlet. In the process of falling of the liquid medicine from the upper guide surface to the lower guide surface, the flow path of the liquid medicine is prolonged, the shear force and mixing degree of the liquid medicine are greatly increased, so that the liquid medicine particles or droplets can be strongly dispersed, and efficient and sufficient mixing can be realized. The plurality of discontinuous guide surfaces are not easy to be blocked by viscous liquid medicine or unsolved particles, and have better patency. The mixing device provided by the present application can realize sufficient mixing of liquid medicine by using a simple structure. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0017] The structures, proportions, sizes, etc. shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, to enable those skilled in the art to understand and read, and are not used to limit the limiting conditions of the embodiments of the present application, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0018] Figure 1 A structural schematic view of a mixing device provided by an embodiment of the present application.

[0019] Figure 2 A structural sectional view of a mixing device provided by an embodiment of the present application.

[0020] Figure 3A structural schematic diagram of a spiral medicine mixing part in a medicine mixing device is provided for the embodiment of the present application.

[0021] Figure 4 A structural sectional view of a medicine mixing device is provided for the embodiment of the present application.

[0022] Figure 5 A structural sectional view of a proportion control assembly in a medicine mixing device is provided for the embodiment of the present application.

[0023] Illustration: 1, medicine inlet upper shell; 11, medicine adding cavity; 12, first medicine mixing cavity; 13, first liquid outlet; 14, guide groove; 2, medicine mixing lower shell; 21, second medicine mixing cavity; 22, second liquid outlet; 3, spiral medicine mixing part; 31, flow guide piece; 32, first flow guide slope; 33, second flow guide slope; 4, proportion control assembly; 41, dose control plate; 411, first liquid leakage hole; 412, top rod; 42, overflow plate; 421, valve core hole; 422, overflow hole; 43, valve seat; 431, sealing plate; 432, core column; 433, insertion slot; 434, first spring; 44, fixed plate; 441, second liquid leakage hole; 45, insertion rod; 46, second spring; 5, flow guide plate; 51, flow guide channel. DETAILED DESCRIPTION

[0024] In order to make the inventive purposes, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] In the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and 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, and therefore cannot be understood as a limitation on the present application. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there can be a component disposed therebetween.

[0026] The embodiment of the present application provides a medicine mixing device, which comprises a medicine feeding upper shell and a medicine mixing lower shell.

[0027] The medicine mixing device provided by the present application can mix multiple different medicines, and the different medicines are preliminarily mixed in the first medicine mixing cavity.

[0028] The technical solutions of the present application will be further described below with reference to the drawings and specific embodiments.

[0029] As shown in Figures 1-5 , the present application provides a medicine mixing device, which is used in the fields of medicine and biological preparation, and is used in the scene of mixing two or more different medicines.

[0030] As shown in Figure 1 , Figure 2 , and Figure 3As shown, in the embodiment, the medicine mixing device comprises a medicine mixing lower shell 2 connected to a medicine mixing upper shell 1. The medicine mixing upper shell 1 has a first medicine mixing cavity 12 and at least two independent medicine adding cavities 11, and the medicine adding cavities 11 are all communicated with the first medicine mixing cavity 12. The medicine mixing upper shell 1 has a first liquid outlet 13 at the bottom thereof communicated with the first medicine mixing cavity 12. The medicine mixing lower shell 2 is connected to one end of the first liquid outlet 13 of the medicine mixing upper shell 1. The medicine mixing lower shell 2 has a second medicine mixing cavity 21 communicated with the first liquid outlet 13, and a spiral medicine mixing part 3 is arranged in the second medicine mixing cavity 21. The medicine mixing lower shell 2 has a second liquid outlet 22. The spiral medicine mixing part 3 has multiple layers of discontinuous inclined flow guide surfaces in the axial direction. After the liquid medicine enters the second medicine mixing cavity 21 from the first liquid outlet 13, it flows through the multiple layers of flow guide surfaces in sequence and flows out from the second liquid outlet 22.

[0031] Specifically, the medicine mixing device is composed of two upper and lower shell parts. The medicine mixing upper shell 1 has multiple medicine adding cavities 11 which are isolated from each other. Each medicine adding cavity 11 can be independently filled with different liquid medicines, so that the different medicines can be prevented from being mixed in advance in the early stage of adding medicines. The bottoms of the multiple medicine adding cavities 11 are all communicated with a common first medicine mixing cavity 12 which has a larger space. When the liquid medicines enter the first medicine mixing cavity 12 from the medicine adding cavities 11, the liquid medicines are mixed for the first time. The first liquid outlet 13 can be arranged at the center of the lower end surface of the medicine mixing upper shell 1, and the liquid medicines mixed for the first time can flow out through the first liquid outlet 13. The medicine mixing lower shell 2 can be detachably installed below the medicine mixing upper shell 1 by means of thread connection or plug-in connection. The upper end of the medicine mixing lower shell 2 is open, and the cavity inside the medicine mixing lower shell 2 forms a second medicine mixing cavity 21 which can directly receive the liquid medicines from the first liquid outlet 13 of the medicine mixing upper shell. The spiral medicine mixing part 3 is fixedly installed on the central axis of the second medicine mixing cavity 21.

[0032] At the same time, the top end of the spiral medicine mixing part 3 is connected to the first liquid outlet, and the bottom end of the spiral medicine mixing part 3 is connected to the second liquid outlet. For example, the spiral medicine mixing part 3 is not a continuous spiral blade, but is composed of multiple layers of inclined flow guide surfaces which are arranged in the vertical direction but are not directly connected to each other. When the liquid medicine flows down, it first impacts the uppermost flow guide surface, and then falls to the flow guide surface of the next layer after the flow direction and shape of the liquid medicine are changed by the flow guide surface. The liquid medicine flows through all the flow guide surfaces in this way. In the process of falling from the flow guide surface of the upper layer to the flow guide surface of the lower layer, the liquid medicine is in short contact with the air and is internally impacted, which greatly increases the turbulence degree and shear force of the fluid, so that the liquid medicine particles or droplets are strongly broken up, and high-efficiency mixing is achieved. At the same time, the multiple flow guide surfaces greatly lengthen the flow path of the liquid medicine, increase the mixing time and contact opportunity, and the discontinuous structure is less likely to be completely blocked by viscous liquid medicines or unsolved particles, and has better smoothness.

[0033] For example, the first dispensing port can be equipped with an opening and closing valve, allowing the liquid medicine to be temporarily stored in the first mixing chamber 12. After the medicine is added, the first dispensing port is opened, allowing the initially mixed liquid medicine to enter the second mixing chamber 21. The independent dispensing chamber 11 allows different drugs to be physically isolated during the initial injection, while the first mixing chamber 12 provides space for the initial mixing of multiple liquid medicines, laying the foundation for subsequent efficient mixing and improving the overall mixing efficiency. In actual operation, one liquid medicine can be added first, and the mixer can be tilted to temporarily store it in the first mixing chamber 12 before adding other liquid medicines, which improves the ease of operation.

[0034] like Figure 3 As shown, in this embodiment of the invention, the spiral mixing section 3 includes a plurality of guide members 31 arranged along the axial direction. The guide member 31 has a first guide slope 32 and a second guide slope 33. After the liquid enters the second mixing chamber 21 from the first liquid outlet 13, it is diverted to the first guide slope 32 and the second guide slope 33.

[0035] Specifically, the spiral mixing section 3 is composed of multiple guide members 31 stacked on a central axis. Each guide member 31 has two inclined surfaces with different inclination directions, angles, or shapes, namely a first guide inclined surface 32 and a second guide inclined surface 33. When the liquid medicine falls onto the guide member 31, it is divided into two streams by the first guide inclined surface 32 and the second guide inclined surface 33, and flows down along different inclined surfaces respectively. By using the first guide inclined surface 32 and the second guide inclined surface 33 to split the liquid medicine on each guide member 31, the liquid medicine is continuously divided into different streams. These streams cross, collide, and recombine when falling to the lower layer, greatly improving the mixing effect.

[0036] Furthermore, both the first guide slope 32 and the second guide slope 33 are arc-shaped surfaces, and their inclination and area are different. The lower edge of the first guide slope 32 is arc-shaped, while the lower edge of the second guide slope 33 is straight.

[0037] Specifically, both the first guide slope 32 and the second guide slope 33 are curved, but their inclination angles and surface areas differ. The bottom edge of the first guide slope 32 is rounded, while the bottom edge of the second guide slope 33 is a straight line. The curved surfaces and different inclinations cause the flow velocity and direction of the liquid to change continuously and complexly during the flow process, further intensifying turbulence. The different lower edges result in differences in the angle, distance, and droplet shape of the liquid as it flows down the two slopes. This differentiated dispersion makes the collisions between different streams more intense and random, further improving the mixing effect.

[0038] Further, the adjacent flow guides 31 are arranged in a staggered manner, i.e. the edge projection of the first flow guide slope 32 of the upper flow guide 31 is located in the second flow guide slope 33 of the lower flow guide 31, and the edge projection of the second flow guide slope 33 of the upper flow guide 31 is located in the first flow guide slope 32 of the lower flow guide 31.

[0039] For example, the liquid medicine flowing down the first flow guide slope 32 of the upper flow guide 31 falls into the second flow guide slope 33 of the lower flow guide 31, and the liquid medicine flowing down the second flow guide slope 33 of the upper flow guide 31 falls into the first flow guide slope 32 of the lower flow guide 31. Therefore, the liquid medicine flows through the multiple layers of flow guides 31 in sequence, and the liquid medicine undergoes multiple cross and recombination paths, so that all parts of the liquid medicine can participate in sufficient mixing.

[0040] As shown in FIGS. 1, 2 and 3, Figure 4 and Figure 5 in an embodiment of the present application, a proportioning assembly 4 for controlling the dosage of the liquid medicine mixture is arranged in the medicine adding cavity 11, and the proportioning assembly 4 comprises: a dosage control plate 41 slidably arranged in the medicine adding cavity 11, and a first liquid leakage hole 411 is formed in the dosage control plate 41; an overflow plate 42 slidably arranged in the medicine adding cavity 11 above the dosage control plate 41, and a valve core hole 421 is formed in the center of the overflow plate 42, and an overflow hole 422 is formed around the valve core hole 421; a valve seat 43, which comprises a cover plate 431 arranged above the overflow plate 42 and a core column 432 connected below the cover plate 431, the core column 432 penetrates the valve core hole 421, the cover plate 431 can cover the overflow hole 422, and a first spring 434 is sleeved on the core column 432, one end of the first spring 434 abuts against the lower end surface of the overflow plate 42, and the other end is fixedly connected with the core column 432; a fixed plate 44 connected above the cover plate 431, and a second liquid leakage hole 441 is formed in the fixed plate 44, and the second liquid leakage hole 441 is located outside the cover plate 431.

[0041] Specifically, the dosage control plate 41 is slidably arranged inside the medicine adding cavity 11, and its position is fixed, and the first liquid leakage hole 411 can be used for the liquid medicine to flow down. A vertical sliding groove can be formed on the sidewall of the medicine adding cavity 11, a sliding block is fixed on the overflow plate 42, and the sliding block slides in the sliding groove, so that the overflow plate 42 can slide in the vertical direction. The core column 432 penetrates the valve core hole 421, the upper end is fixedly connected with the cover plate 431, the lower end can be stepped, and the diameter of the lower end part is greater than that of the upper end part; the first spring 434 is sleeved on the core column 432, and one end abuts against the bottom of the overflow plate 42, and the other end abuts against the stepped part of the lower end of the core column 432. The fixed plate 44 can be fixedly connected above the cover plate 431.

[0042] Exemplarily, a sleeve is fixed at the bottom of the overflow plate 42, the inner diameter of the sleeve is consistent with the diameter of the valve core hole 421, the sleeve is sleeved outside the core column 432, the first spring 434 can be protected inside, and when the core column 432 slides relative to the overflow plate 42, the core column 432 can slide inside the sleeve. The first spring 434 can be protected by the sleeve to avoid contact with the liquid medicine.

[0043] It should be noted that the diameter of the valve core hole 421 is greater than or equal to the diameter of the core column 432, the diameter of the overflow hole 422 is less than the diameter of the sealing plate 431, and the diameter of the second liquid leakage hole 441 is greater than the diameter of the sealing plate 431; the lower end surface of the sealing plate 431 can be provided with a sealing ring, and the initial pre-tightening force of the first spring 434 can apply forces in opposite directions to the sealing plate 431 and the overflow plate 42, so that the sealing plate 431 and the overflow plate 42 are attached.

[0044] Therefore, after the liquid enters the medicine adding cavity 11, it can enter the overflow plate 42 from the second liquid leakage hole 441 and be blocked by the overflow plate 42; at the same time, the gravity of the liquid medicine moves the overflow plate 42 downward, and when the lower end of the core column 432 abuts against the dose control plate 41, the gravity of the liquid medicine presses the overflow plate 42 downward, the first spring 434 is compressed, and a gap is formed between the sealing plate 431 and the overflow plate 42, the liquid medicine can flow down from the overflow hole 422 and flow through the first liquid leakage hole 411 into the first medicine mixing cavity 12. The liquid medicine can slowly flow into the first medicine mixing cavity 12, which is beneficial to fully mixing. When the gap between the sealing plate 431 and the overflow plate 42 reaches the maximum, the flow rate of the liquid medicine flowing through the overflow hole 422 is less than the flow rate of the liquid medicine added into the medicine adding cavity 11, and by sliding the dose control plate 41 along the vertical direction and fixing it at a corresponding height, the dose of the liquid medicine added into the medicine adding cavity 11 can be controlled.

[0045] Further, a guide groove 14 is axially formed on the side wall of the medicine adding cavity 11, a guide block is arranged on the dose control plate 41, the guide block slides in the guide groove 14, the guide block has a positioning pin, and the bottom of the guide groove 14 is axially spaced apart and provided with a plurality of positioning grooves. The dose control plate 41 can slide in the guide groove 14, and when the positioning pin is aligned with the positioning groove, the position of the dose control plate 41 can be fixed; the plurality of spaced-apart positioning grooves can fix the dose control plate 41 at different heights, and each positioning groove can correspond to a dose value. In actual use, the height of the dose control plate 41 can be adjusted according to the actual dose requirement, so as to realize the control of the liquid medicine dose in different medicine adding cavities 11.

[0046] Exemplarily, the dosing cavity 11 has a dose calibration ring near the inlet, and the inner part of the medicine inlet upper shell 1 is provided with an overflow channel, the inlet end and the outlet end of the overflow channel are located in the dosing cavity 11, and the inlet end is located above the dose calibration ring, and the outlet end is located below the dose regulating plate 41. Among them, the dose calibration ring can display the maximum added dose of the medicine liquid, and the excess medicine liquid can flow out from the overflow channel.

[0047] Further, the top rod 412 is fixed on the upper end surface of the dose regulating plate 41, the bottom of the core column 432 is provided with a slot 433, the top rod 412 is movably inserted into the slot 433, the second spring 46 is arranged between the top rod 412 and the bottom of the slot 433, and the bottom of the core column 432 and the top of the top rod 412 are provided with magnetic blocks.

[0048] Specifically, the elastic force of the second spring 46 is smaller than that of the first spring 434. When the medicine liquid is added, the gravity of the medicine liquid presses the overflow plate 42, the second spring 46 is compressed first, the overflow plate 42 and the valve seat 43 as a whole descend, and a small amount of medicine liquid on the overflow plate 42 will flow out from the overflow hole 422. When the dose of the medicine liquid increases, the overflow plate 42 and the valve seat 43 continue to descend, the bottom of the core column 432 abuts against the top of the top rod 412, and the magnetic blocks arranged in the interiors of the two attract each other, temporarily connecting the core column 432 and the top rod 412, and the height of the valve seat 43 no longer changes; then the dose of the medicine liquid continues to increase, the overflow plate 42 can be pressed to generate a gap between the overflow plate 42 and the sealing plate 431, so that the medicine liquid flows down from the overflow hole 422.

[0049] Exemplarily, a vertical sliding groove can also be arranged on the side wall of the dosing cavity 11, the sliding groove is located above the guide groove, a sliding block is arranged on the overflow plate 42 and slides in the sliding groove. A vertical fixing rod can be fixed in the sliding groove, the sliding block passes through the fixing rod, a damping spring can be sleeved on the fixing rod, the damping spring is located below the overflow plate 42, and the elastic force of the damping spring is smaller than that of the second spring 46. In addition, a small-diameter liquid discharge hole can be arranged on the overflow plate 42, when the dose of the medicine liquid is small, the sealing plate 431 is attached to the overflow plate 42, and a small amount of remaining medicine liquid can flow out from the liquid discharge hole.

[0050] In one embodiment of the present application, the dose regulating plate 41 is provided below with a flow guide plate 5, the bottom of the flow guide plate 5 is provided with a flow guide channel 51 which is inclined, the outlet end of the flow guide channel 51 is close to the side of the cavity wall of the medicine adding cavity 11, and the inclination angles of the flow guide channels 51 of the flow guide plate 5 in different medicine adding cavities 11 are different. For example, after the liquid medicine flows out from the first liquid leakage hole 411, it drops on the flow guide plate 5, the upper end surface of the flow guide plate 5 is a V-shaped groove, and the liquid medicine is collected conveniently. The middle part of the flow guide plate 5 is provided with a through hole which is communicated with the flow guide channel 51, and the liquid medicine flows through the flow guide channel 51 and then enters the first medicine mixing cavity 12. The inclination angle of the flow guide cylinder can control the flow rate of the liquid medicine, and by controlling the inclination angles of the flow guide channels 51 in different medicine adding cavities 11, the order of the liquid medicine in different medicine adding cavities 11 entering the first medicine mixing cavity 12 can be controlled, so as to adapt to the medicine which has a mixing order requirement.

[0051] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit the present application; although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A chemical mixer characterized by, The medicine feeding upper shell (1) has a first medicine mixing cavity (12) and at least two independent medicine adding cavities (11), a plurality of the medicine adding cavities (11) are communicated to the first medicine mixing cavity (12), and the medicine feeding upper shell (1) has a first liquid outlet (13) at the bottom and communicated with the first medicine mixing cavity (12); The medicine mixing lower shell (2) is connected to one end of the first liquid outlet (13) of the medicine feeding upper shell (1), the medicine mixing lower shell (2) has a second medicine mixing cavity (21) communicated with the first liquid outlet (13), and a spiral medicine mixing part (3) is arranged in the second medicine mixing cavity (21); and the medicine mixing lower shell (2) has a second liquid outlet (22); The spiral medicine mixing part (3) has a plurality of discontinuous inclined flow guide surfaces in the axial direction, and the liquid flows through the plurality of flow guide surfaces in sequence between the first liquid outlet (13) and the second liquid outlet (22).

2. The chemical mixer of claim 1, wherein The spiral medicine mixing part (3) includes a plurality of flow guide pieces (31) arranged in the axial direction, the flow guide piece (31) has a first flow guide inclined surface (32) and a second flow guide inclined surface (33), and the liquid entering the second medicine mixing cavity (21) from the first liquid outlet (13) is divided into the first flow guide inclined surface (32) and the second flow guide inclined surface (33).

3. The chemical mixer of claim 2, wherein, The adjacent flow guide pieces (31) are arranged in a staggered manner, the edge projection of the first flow guide inclined surface (32) of the upper flow guide piece (31) is located in the second flow guide inclined surface (33) of the lower flow guide piece (31), and the edge projection of the second flow guide inclined surface (33) of the upper flow guide piece (31) is located in the first flow guide inclined surface (32) of the lower flow guide piece (31).

4. The chemical dispenser of claim 3, wherein The first flow guide inclined surface (32) and the second flow guide inclined surface (33) are both arc surfaces, and the inclination degree and area of the two are different, the lower end edge of the first flow guide inclined surface (32) is arc-shaped, and the lower end edge of the second flow guide inclined surface (33) is straight.

5. The chemical mixer of claim 1, wherein The medicine mixing upper shell and the medicine mixing lower shell (2) are detachably connected.

6. The chemical mixer of claim 1, wherein The medicine adding cavity (11) is provided with a proportional control assembly (4) for controlling the dose of the liquid medicine mixture, and the proportional control assembly (4) includes: A dose control plate (41) is slidably arranged in the medicine adding cavity (11), and a first liquid leakage hole (411) is formed in the dose control plate (41); A flow plate (42) is slidably arranged in the medicine adding cavity (11) and located above the dose control plate (41), a valve core hole (421) is formed in the center of the flow plate (42), and a flow hole (422) is formed around the valve core hole (421); A valve seat (43) comprises a cover plate (431) arranged above the flow plate (42) and a core column (432) connected below the cover plate (431), the core column (432) penetrates the valve core hole (421), the cover plate (431) can cover the overflow hole (422) inside, the first spring (434) is sleeved on the core column (432), one end of the first spring (434) abuts against the lower end surface of the flow plate (42), and the other end is fixedly connected with the core column (432); A fixed plate (44) is connected to the cover plate (431) and located above the cover plate (431), a second liquid leakage hole (441) is formed in the fixed plate (44), and the second liquid leakage hole (441) is located outside the cover plate (431).

7. The chemical dispenser of claim 6, wherein An axial guide groove (14) is formed in the sidewall of the medicine adding cavity (11), a guide block is arranged on the dose regulating plate (41), the guide block slides in the guide groove (14), the guide block has a positioning bayonet, and a plurality of positioning grooves are formed in the groove bottom of the guide groove (14) and are spaced apart in the axial direction.

8. The chemical dispenser of claim 6, wherein A top rod (412) is fixed to the upper end surface of the dose regulating plate (41), an insertion slot (433) is formed in the bottom of the core column (432), the top rod (412) is movably inserted into the insertion slot (433), a second spring (46) is arranged between the top rod (412) and the slot bottom of the insertion slot (433), and magnetic blocks are arranged on the bottom of the core column (432) and the top of the top rod (412).

9. The chemical dispenser of claim 6, wherein, A flow guide plate (5) is arranged below the dose regulating plate (41), the flow guide plate (5) has an inclined flow guide channel (51) at the bottom, the outlet end of the flow guide channel (51) is close to the cavity wall of the medicine adding cavity (11), and the inclination angles of the flow guide channels (51) of the flow guide plates (5) in different medicine adding cavities (11) are different.

Images