Automatic liquid preparation system

Abstract

The utility model relates to the technical field of in-vitro diagnostic equipment, in particular to an automatic liquid preparation system which comprises a first liquid supply assembly and a second liquid supply assembly, the liquid inlet end of the first metering pump is connected with the liquid outlet end of the first liquid supply assembly; the liquid inlet end of the second metering pump is connected with the liquid outlet end of the second liquid supply assembly; the liquid outlet end of the first metering pump and the liquid outlet end of the second metering pump are respectively connected to the liquid inlet end of the mixer. The first constant delivery pump and the second constant delivery pump can quantitatively suck and discharge liquid according to preset values, the liquid preparation precision is more accurate, the liquid can be prepared and used on site, and the consumption cost of consumables is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of in vitro diagnostic equipment, in particular to an automatic liquid dispensing system. Background Art

[0002] Sample analyzers have become the main equipment for clinical immunodiagnosis. During operation, sample analyzers need to be continuously supplied with pure water and cleaning fluid, which is prepared by mixing concentrate and pure water in a liquid mixing system in a certain proportion.

[0003] The current liquid preparation work adopts the traditional weighing method and manual liquid preparation method, which results in large loss of consumables and inaccurate liquid preparation accuracy, which has a great impact on subsequent sample analysis work. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an automatic liquid dispensing system for solving the problems of large consumables loss and inaccurate liquid dispensing accuracy in the prior art.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides an automatic liquid dispensing system, comprising:

[0006] a first liquid supply assembly and a second liquid supply assembly;

[0007] a first metering pump, wherein a liquid inlet end of the first metering pump is connected to a liquid outlet end of the first liquid supply assembly;

[0008] a second metering pump, wherein a liquid inlet end of the second metering pump is connected to a liquid outlet end of the second liquid supply assembly; and

[0009] The liquid outlet of the first metering pump and the liquid outlet of the second metering pump are respectively connected to the liquid inlet of the mixer.

[0010] Optionally, the first liquid supply assembly includes a first liquid supply container and a first filter, the first filter is connected between the liquid outlet end of the first liquid supply container and the liquid inlet end of the first metering pump, and the second liquid supply assembly includes a second liquid supply container and a second filter, the second filter is connected between the liquid outlet end of the second liquid supply container and the liquid inlet end of the second metering pump.

[0011] Optionally, a first one-way valve is provided between the liquid outlet of the first liquid supply assembly and the liquid inlet of the first metering pump, and a second one-way valve is provided between the liquid outlet of the second liquid supply assembly and the liquid inlet of the second metering pump.

[0012] Optionally, the first metering pump further has a flushing liquid inlet and a flushing liquid outlet, and the flushing liquid inlet and the flushing liquid outlet of the first metering pump are respectively connected in sequence between the liquid outlet of the second liquid supply assembly and the liquid inlet of the second metering pump.

[0013] Optionally, the automatic liquid dispensing system further comprises a collecting container for collecting the dispensed liquid, and a liquid inlet end of the collecting container is connected to a liquid outlet end of the mixer.

[0014] Optionally, the mixer comprises:

[0015] A housing having an inner cavity with one end open, and a liquid outlet provided on the housing, the liquid outlet forming the liquid outlet end of the mixer;

[0016] A cover body is provided on the open end of the inner cavity of the shell, and a plurality of liquid inlets are provided on the cover body, each of the liquid inlets forming a liquid inlet end of the mixer;

[0017] A mixing core is arranged in the inner cavity of the shell, and the outer wall of the mixing core is provided with a first spiral groove and a second spiral groove with opposite rotation directions. The first spiral groove and the second spiral groove are staggered and connected to each other. The first spiral groove and the second spiral groove form a spiral flow channel, and each of the liquid inlets is respectively connected to the first end of the spiral flow channel, and the liquid outlet is connected to the second end of the spiral flow channel.

[0018] Optionally, a first groove is provided on the first end face of the mixing core, a first mixing cavity is formed between the inner wall of the first groove and the cover body, the first end of the spiral flow channel and the liquid inlet are respectively connected to the first mixing cavity, a second groove and a first axial mixing hole penetrating the thickness direction of the bottom wall of the first groove are provided on the bottom wall of the first groove, a first radial mixing hole penetrating the thickness direction of the second groove is provided on the side wall of the second groove, a plurality of the first axial mixing holes are uniformly distributed along the circumference of the bottom wall of the first groove, and a plurality of the first radial mixing holes are uniformly distributed along the circumference of the side wall of the second groove.

[0019] Optionally, a second mixing chamber is formed between the second end face of the mixing core and the inner wall of the shell cavity, the second mixing chamber is connected to the liquid outlet, the second end of the spiral flow channel and the liquid outlet are respectively connected to the second mixing chamber, a third groove is provided on the second end face of the mixing core, and a second radial mixing hole is provided on the side wall of the third groove which runs through the thickness direction thereof, the second radial mixing hole connects the second end of the spiral flow channel and the second mixing chamber, and there are at least two second radial mixing holes arranged opposite to each other.

[0020] Optionally, a first step portion is provided on the second end surface of the mixing core, a second step portion is provided on the inner side wall of the shell, a first seal is provided between the first step portion and the second step portion, and the first step portion presses the first seal onto the second step portion.

[0021] Optionally, a second seal is provided between the cover and the shell, and the cover presses the second seal against the open end of the inner cavity of the shell; a third seal is provided between the mixing core and the cover, and the cover presses the third seal against the first end face of the mixing core.

[0022] As described above, the automatic liquid dispensing system of the present invention has the following beneficial effects:

[0023] The first metering pump and the second metering pump can quantitatively inhale and discharge liquid according to preset values, with more accurate liquid dispensing accuracy, and can also realize the liquid being prepared and used immediately, thereby reducing the cost of consumables. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of an embodiment of the present utility model;

[0025] Figure 2 This is an overall three-dimensional diagram of the mixer according to an embodiment of the present invention;

[0026] Figure 3 This is an overall exploded view of the mixer according to an embodiment of the present invention;

[0027] Figure 4 This is a top view of the mixing core according to an embodiment of the present utility model;

[0028] Figure 5 This is an overall cross-sectional view of the mixer according to an embodiment of the present invention;

[0029] Figure 6 This is a partial enlarged view of point B of an embodiment of the present utility model;

[0030] Figure 7 This is a front view of the mixing core according to an embodiment of the present utility model;

[0031] Figure 8 This is a cross-sectional view of the embodiment of the utility model at AA

[0032] Part Number Description

[0033] 1-first liquid supply assembly; 11-first filter; 12-first liquid supply container; 2-second liquid supply assembly; 21-second filter; 22-second liquid supply container; 3-first metering pump; 31-flushing liquid inlet; 32-flushing liquid outlet; 33-liquid inlet of first metering pump; 34-liquid outlet of first metering pump; 4-second metering pump;

[0034] 5-mixer; 51-housing; 511-liquid outlet; 512-second step;

[0035] 52-cover; 521-liquid inlet;

[0036] 53-mixing core; 531-first spiral groove; 532-second spiral groove;

[0037] 533 - first groove; 533a - first axial mixing hole; 534 - second groove; 534a - first radial mixing hole;

[0038] 535 - third groove; 535a - second radial mixing hole; 536 - first step;

[0039] 54-first sealing member; 55-third sealing member; 56-second sealing member;

[0040] 6-first one-way valve; 7-second one-way valve; 8-collecting container; 9-interface integrator; 91-first water inlet of integrator; 92-first water outlet of integrator; 93-second water outlet of integrator; 94-second water inlet of integrator. DETAILED DESCRIPTION

[0041] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.

[0042] It should be noted that the diagrams provided in this embodiment are only used to illustrate the basic concept of the present invention. Therefore, the diagrams only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. The type, quantity and proportion of each component in actual implementation can be changed at will, and the component layout type may also be more complex. The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read. They are not used to limit the conditions for the implementation of the present invention, so they have no technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the effect and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0043] See Figure 1 This embodiment provides an automatic liquid dispensing system, comprising a first liquid supply component 1, a second liquid supply component 2, a first metering pump 3, a second metering pump 4 and a mixer 5, wherein the first metering pump 3 and the second metering pump 4 both have a liquid inlet and a liquid outlet. The liquid inlet 33 of the first metering pump is connected to the liquid outlet of the first liquid supply component 1, the liquid inlet 33 of the second metering pump 4 is connected to the liquid outlet of the second liquid supply component 2, the liquid inlet of the mixer 5 has multiple liquid inlets, the liquid outlet 34 of the first metering pump and the liquid outlet of the second metering pump 4 are respectively connected to different liquid inlets of the liquid inlet of the mixer 5. The above connections are all connected through pipelines, and the first liquid supply component 1 and the second liquid supply component 2 are respectively loaded with the first liquid and the second liquid, and the first liquid and the second liquid are miscible liquids. For example, the first liquid supply component 1 may be provided with a concentrated liquid, and the second liquid supply component 2 may be provided with purified water. The first metering pump 3 draws a certain amount of first liquid from the first liquid supply component 1 through a preset suction volume, and then the first metering pump 3 discharges it into the mixer 5 through a preset discharge volume; the second metering pump 4 draws a certain amount of second liquid from the second liquid supply component 2 through a preset suction volume, and then the second metering pump 4 also discharges it into the mixer 5 through a preset discharge volume. The preset amount of first liquid and the preset amount of second liquid are mixed in the mixer 5.

[0044] The first metering pump 3 and the second metering pump 4 of this embodiment can quantitatively inhale and discharge liquid according to preset values, which increases the accuracy of liquid dispensing and enables the liquid to be prepared and used immediately, thus reducing the cost of consumables. The preset values ​​for the inhalation and discharge of the first metering pump 3 and the second metering pump 4 can be pre-set and adjusted.

[0045] In one embodiment, the automatic liquid dispensing system also includes a support frame, and the first liquid supply component 1, the second liquid supply component 2, the first metering pump 3, the second metering pump 4 and the mixer 5 are all arranged on the support frame. By reasonably arranging the first liquid supply component 1, the second liquid supply component 2, the first metering pump 3, the second metering pump 4 and the mixer 5 on the support frame, the overall footprint of the automatic liquid dispensing system can be reduced, making the automatic liquid dispensing system portable and increasing its applicable scenarios.

[0046] In one embodiment, Figure 1 As shown, the first liquid supply assembly 1 includes a first liquid supply container 12 and a first filter 11. The first filter 11 is connected between the liquid outlet of the first liquid supply container 12 and the liquid inlet 33 of the first metering pump. That is, the first filter 11 is connected to the pipeline between the liquid outlet of the first liquid supply container 12 and the liquid inlet 33 of the first metering pump. The second liquid supply assembly 2 includes a second liquid supply container 22 and a second filter 21. The second filter 21 is connected between the liquid outlet of the second liquid supply container 22 and the liquid inlet of the second metering pump 4. That is, the second filter 21 is connected to the pipeline between the liquid outlet of the second liquid supply container 22 and the liquid inlet of the second metering pump 4. The first filter 11 can be disposed in the first liquid supply container 12, and the second filter 21 can be disposed in the second liquid supply container 22. Impurities in the first liquid supply container 12 can be filtered by the first filter 11, and impurities in the second liquid supply container 22 can be filtered by the second filter 21, thereby preventing impurities from entering the first metering pump 3 or the second metering pump 4 and causing damage thereto.

[0047] In one embodiment, Figure 1 As shown, a first one-way valve 6 is provided between the liquid outlet of the first liquid supply component 1 and the liquid inlet 33 of the first metering pump, that is, a first one-way valve 6 is provided on the pipeline between the liquid outlet of the first liquid supply component 1 and the liquid inlet 33 of the first metering pump. A second one-way valve 7 is provided between the liquid outlet of the second liquid supply component 2 and the liquid inlet of the second metering pump 4, that is, a second one-way valve 7 is provided on the pipeline between the liquid outlet of the second liquid supply component 2 and the liquid inlet of the second metering pump 4. The provision of the first one-way valve 6 can prevent the first liquid from flowing back into the first liquid supply component 1, causing contamination in the first liquid supply component 1 or inaccurate liquid dispensing accuracy. The provision of the second one-way valve 7 can prevent the second liquid from flowing back into the second liquid supply component 2, causing contamination in the second liquid supply component 2 or inaccurate liquid dispensing accuracy.

[0048] In one embodiment, Figure 1As shown, when a concentrated liquid or a high-concentration liquid similar to a concentrated liquid is set in the first liquid supply component 1, crystallization is easily generated in the pump head of the first metering pump 3. The first metering pump 3 also has a flushing liquid inlet 31 and a flushing liquid outlet 32. The flushing liquid inlet 31 and the flushing liquid outlet 32 ​​of the first metering pump 3 are respectively connected in sequence between the liquid outlet of the second liquid supply component 2 and the liquid inlet of the second metering pump 4. For example, an interface hub 9 is provided on the pipeline between the liquid outlet of the second liquid supply component 2 and the liquid inlet of the second metering pump 4. The interface hub 9 may also include two tee connectors. The interface hub 9 has a first water inlet 91 of the hub, a first water outlet 92 of the hub, a second water inlet 94 of the hub and a second water outlet 93 of the hub. The first water inlet 91 of the hub, the first water outlet 92 of the hub, the second water inlet 94 of the hub and the second water outlet 93 of the hub are all connected to each other. The liquid outlet of the second liquid supply assembly 2 is connected to the first water inlet 91 of the integrator, the liquid inlet of the second metering pump 4 is connected to the first water outlet 92 of the integrator, the flushing liquid inlet 31 of the first metering pump 3 is connected to the second water outlet 93 of the integrator, and the flushing liquid outlet 32 ​​of the first metering pump 3 is connected to the second water inlet 94 of the integrator. A flushing circulation pipeline is formed between the flushing liquid inlet 31 and the flushing liquid outlet 32 ​​of the first metering pump 3 and the interface integrator 9. The second liquid flowing out of the liquid outlet of the second liquid supply assembly 2 enters the interface integrator 9 from the first water inlet 91 of the integrator, a part of it enters the second metering pump 4 from the first water outlet 92 of the integrator, and a part of it enters the flushing circulation pipeline from the second water outlet 93 of the integrator, and enters from the flushing liquid inlet 31 of the first metering pump 3 and is discharged from the flushing liquid outlet 32 ​​of the first metering pump 3, thereby flushing the pump head of the first metering pump 3 to prevent the concentrated liquid or other high-concentration liquid from crystallizing. Finally, it enters the interface integrator 9 from the second water inlet 94 of the integrator.

[0049] In one embodiment, Figure 1 As shown, the automatic liquid dispensing system further includes a collecting container 8, the liquid inlet end of the collecting container 8 is connected to the liquid outlet end of the mixer 5, that is, the liquid inlet end of the collecting container 8 is connected to the liquid outlet end of the mixer 5. The collecting container 8 is used to collect the prepared solution.

[0050] In one embodiment, Figures 2 to 8The mixer 5 includes a shell 51, a cover 52 and a mixing core 53. The shell 51, the cover 52 and the mixing core 53 can all be cylindrical in shape. The shell 51 has an inner cavity, and the top of the inner cavity is open, that is, the top of the shell 51 is open. The bottom end of the shell 51 is provided with a liquid outlet 511 that passes through the axial direction of the shell 51, and the liquid outlet 511 is connected to the inner cavity of the shell 51. The cover 52 is provided on the top of the shell 51 and can block the open end of the inner cavity of the shell 51. The cover 52 is provided with a plurality of liquid inlets 521 that pass through the thickness direction thereof, and all the liquid inlets 521 are respectively connected to the inner cavity of the shell 51. The mixing core 53 is provided in the inner cavity of the shell 51, and the outer diameter of the mixing core 53 is less than or equal to the inner diameter of the shell 51. The mixing core 53 can be completely accommodated in the inner cavity of the shell 51. The outer wall of the mixing core 53 is provided with a first spiral groove 531 and a second spiral groove 532 of opposite rotation directions. The first spiral groove 531 and the second spiral groove 532 are arranged alternately and interconnected, that is, the first spiral groove 531 and the second spiral groove 532 are arranged at intervals. The pitch of the first spiral groove 531 and the second spiral groove 532 can be equal or unequal, and the number of the first spiral groove 531 and the second spiral groove 532 can be set to multiple. The first spiral groove 531 and the second spiral groove 532 form a spiral flow channel, the structure of which is similar to the spiral groove structure on the outer wall of the reciprocating screw. Each liquid inlet 521 is connected to the first end of the spiral flow channel, and the liquid outlet 511 is connected to the second end of the spiral flow channel. When the first spiral groove 531 is located at the topmost end of the mixing core 53 along the axial direction, each liquid inlet 521 is connected to the first spiral groove 531 respectively; when the second spiral groove 532 is located at the topmost end of the mixing core 53 along the axial direction, each liquid inlet 521 is connected to the second spiral groove 532 respectively; when the first spiral groove 531 is located at the bottommost end of the mixing core 53 along the axial direction, the liquid outlet 511 is connected to the first spiral groove 531; when the second spiral groove 532 is located at the bottommost end of the mixing core 53 along the axial direction, the liquid outlet 511 is connected to the second spiral groove 532.

[0051] The outer wall of the mixing core 53 is provided with a first spiral groove 531 and a second spiral groove 532 with opposite rotation directions. The first spiral groove 531 and the second spiral groove 532 are staggered and connected to each other, and the first spiral groove 531 and the second spiral groove 532 form a spiral flow channel. Each liquid inlet 521 is connected to the first end of the spiral flow channel, and the liquid outlet 511 is connected to the second end of the spiral flow channel. Various liquids enter the spiral flow channel through the liquid inlet 521 for mixing and are then discharged through the liquid outlet 511. There is a height difference between the first spiral groove 531 and the second spiral groove 532 adjacent in the vertical direction, which ensures that the liquid between the first spiral groove 531 and the second spiral groove 532 is easier to achieve reversal and convergence collision mixing. When the liquid enters from the upper end of the spiral flow channel and exits from the lower end, under the action of gravity, the downward flow rate of the various liquids is faster and the mixing effect is better. At the connection between the adjacent first spiral groove 531 and the second spiral groove 532, the various liquids will undergo fluid reversal (changing the direction of fluid flow) and cross-convergence collision mixing. That is, each time the various liquids enter the adjacent second spiral groove 532 from the first spiral groove 531, or enter the first spiral groove 531 from the second spiral groove 532, they will again undergo fluid reversal (changing the direction of fluid flow) and cross-convergence collision mixing. The various liquids are mixed multiple times in the spiral flow channel, resulting in better mixing effect and higher mixing efficiency. The liquid can also enter from the bottom end of the spiral flow channel and flow out from its top. For some relatively thick liquids, this mixing method is more effective and more efficient.

[0052] In one embodiment, Figure 2 and Figure 3 As shown, the cover 52 and the housing 51 can be fastened by setting fasteners, and the fasteners include bolts and the like.

[0053] In one embodiment, Figure 5 As shown, the liquid outlet 511 and each liquid inlet 521 can be a through hole, and connectors can be provided in the liquid outlet 511 and each liquid inlet 521 respectively to facilitate connection with other external mechanisms.

[0054] In one embodiment, Figure 5 and Figure 8As shown, a circular first groove 533 is defined on the top end surface of the mixing core 53, and the first groove 533 is concentrically arranged with the top end surface of the mixing core 53. A first mixing chamber is formed between the inner wall of the first groove 533 and the bottom end surface of the cover 52. The top end of the spiral flow channel and the liquid inlet 521 are respectively connected to the first mixing chamber. In other words, the first mixing chamber connects the top end of the spiral flow channel and each liquid inlet 521. Liquid entering from each liquid inlet 521 is first mixed in the first mixing chamber formed between the inner wall of the first groove 533 and the bottom end surface of the cover 52. This allows the multiple miscible liquids to self-mix through mutual collision, thereby improving the mixing effect and efficiency.

[0055] In one embodiment, Figure 5 and Figure 8 As shown, a circular second groove 534 is provided on the bottom wall of the first groove 533. The diameter of the second groove 534 is smaller than that of the first groove 533, and the first groove 533 and the second groove 534 are arranged concentrically. A first axial mixing hole 533a is also provided on the bottom wall of the first groove 533, extending through the thickness thereof. The first axial mixing hole 533a can be arranged axially along the bottom wall of the first groove 533, or eccentrically. The first axial mixing hole 533a connects the first end of the spiral flow channel with the first mixing chamber. A first radial mixing hole 534a is provided on the side wall of the second groove 534, extending through the thickness thereof. The first radial mixing hole 534a can be arranged radially along the side wall of the second groove 534, or eccentrically. The first axial mixing hole 533a and the first radial mixing hole 534a can be arranged correspondingly along the circumference of the first groove 533, or can be spaced apart along the circumference of the first groove 533. The liquid passing through the first axial mixing hole 533a flows downward, and the liquid passing through the first radial mixing hole 534a flows horizontally. Since the first axial mixing hole 533a and the first radial mixing hole 534a are arranged correspondingly along the circumference of the first groove 533, there is intersection between the liquid passing through the first axial mixing hole 533a and the liquid passing through the first radial mixing hole 534a, so that the liquids collide with each other and are self-mixed, thereby improving the mixing effect and mixing efficiency.

[0056] In one embodiment, Figure 5 、 Figure 7 and Figure 8As shown, a plurality of first axial mixing holes 533a are uniformly distributed along the circumference of the bottom wall of the first groove 533. The number of first axial mixing holes 533a is multiple and uniformly distributed along the circumference of the bottom wall of the first groove 533. A plurality of first radial mixing holes 534a are uniformly distributed along the circumference of the sidewall of the second groove 534. The number of first radial mixing holes 534a is multiple and uniformly distributed along the circumference of the sidewall of the second groove 534. Each first axial mixing hole 533a corresponds to each first radial mixing hole 534a along the circumference of the first groove 533; alternatively, each first axial mixing hole 533a and each first radial mixing hole 534a are spaced apart along the circumference of the first groove 533. By providing a plurality of corresponding first axial mixing holes 533a and first radial mixing holes 534a, more cross-collision opportunities are provided for various miscible liquids, thereby improving the mixing effect and efficiency.

[0057] In one embodiment, Figure 5 As shown, a second mixing chamber is formed between the second end surface of the mixing core 53 and the inner wall of the housing 51. Furthermore, a second mixing chamber is formed between the bottom end surface of the mixing core 53 and the bottom of the inner wall of the housing 51. The second mixing chamber is connected to the liquid outlet 511. The second end of the spiral flow channel and the liquid outlet 511 are respectively connected to the second mixing chamber. In other words, the second mixing chamber connects the bottom end of the spiral flow channel and the liquid outlet 511. Liquid flowing out of the spiral flow channel enters the second mixing chamber, where it undergoes further self-mixing through collision, further improving the mixing effect and efficiency.

[0058] In one embodiment, Figure 5 、 Figure 7 and Figure 8 As shown, a third groove 535 is provided on the second end surface of the mixing core 53, that is, a circular third groove 535 is provided on the bottom end surface of the mixing core 53, and the third groove 535 is arranged concentrically with the bottom end surface of the mixing core 53. A second radial mixing hole 535a is provided on the side wall of the third groove 535, which runs through the thickness direction of the third groove 535. The second radial mixing hole 535a can be arranged radially along the side wall of the third groove 535, or it can be arranged eccentrically. The second radial mixing hole 535a connects the second end of the spiral flow channel and the second mixing chamber, and there are at least two second radial mixing holes 535a arranged opposite each other. The liquid flows out from the two oppositely arranged second radial mixing holes 535a and cross-mixes, so that the miscible liquids are self-mixed through mutual collision, thereby improving the mixing effect and efficiency.

[0059] In one embodiment, Figure 5 、 Figure 7 and Figure 8As shown, the second radial mixing holes 535a are multiple and evenly distributed along the circumferential direction of the sidewall of the third groove 535. The number of the second radial mixing holes 535a is multiple and evenly distributed along the circumferential direction of the sidewall of the third groove 535. By increasing the number of the second radial mixing holes 535a, more cross-collision opportunities are provided for various miscible liquids, thereby improving the mixing effect and efficiency.

[0060] In one embodiment, Figures 3 to 8 As shown, a first step 536 is provided on the second end surface of the mixing core 53, that is, the first step 536 is provided on the bottom end surface of the mixing core 53. A second step 512 is provided on the bottom of the inner wall of the housing 51. The first step 536 and the second step 512 cooperate with each other. A first sealing member 54 is provided between the first step 536 and the second step 512. The first step 536 presses the first sealing member 54 against the second step 512. The first sealing member 54 comprises a sealing ring. The provision of the first sealing member 54 can seal between the bottom outer wall of the mixing core 53 and the inner wall of the housing 51, preventing the liquid in the spiral flow channel from flowing directly from the outer wall of the mixing core 53 and the inner wall of the housing 51 to the liquid outlet 511, thereby affecting the mixing effect.

[0061] In one embodiment, Figure 3 and Figure 5 As shown, a second seal 56 is disposed between the bottom end surface of the cover 52 and the top end surface of the housing 51. The cover 52 presses the second seal 56 against the open end of the inner cavity of the housing 51. A sealing groove is disposed on the top end surface of the housing 51, and the second seal 56 is disposed within the sealing groove. The second seal 56 seals the bottom end surface of the cover 52 and the top end surface of the housing 51, preventing liquid from leaking out from between the bottom end surface of the cover 52 and the top end surface of the housing 51.

[0062] In one embodiment, the bottom surface of the cover 52 is provided with a downwardly extending annular protrusion. A groove in the cover 52 is disposed within the annular protrusion. The annular protrusion extends into the first groove 533, and the outer wall of the annular protrusion abuts against the inner wall of the first groove 533. The groove in the cover 52 communicates with each liquid inlet 521 and also with the first groove 533, increasing the volume of the first mixing chamber and thereby enhancing the mixing effect. The annular protrusion also serves to position the cover 52 and the mixing core 53.

[0063] In one embodiment, Figure 3 and Figure 5 As shown, a third sealing member 55 is provided between the mixing core 53 and the cover 52 . A groove for accommodating the third sealing member 55 is provided on the bottom end surface of the cover 52 . The cover 52 presses the third sealing member 55 against the top end surface of the mixing core 53 .

[0064] In one embodiment, Figure 3 and Figure 5 As shown, the third sealing member 55 may also be disposed between the outer wall of the annular protrusion on the bottom end surface of the cover body 52 and the inner wall of the first groove 533 , thereby improving the sealing effect and the fixing effect of the third sealing member 55 .

[0065] In one embodiment, both ends of the inner cavity of the shell 51 are open, and a lower cover is provided at the bottom end of the shell 51 to seal the bottom opening of the inner cavity of the shell 51.

[0066] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may 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 one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. An automatic liquid dispensing system, characterized in that: include: a first liquid supply assembly and a second liquid supply assembly; a first metering pump, wherein a liquid inlet end of the first metering pump is connected to a liquid outlet end of the first liquid supply assembly; a second metering pump, wherein a liquid inlet end of the second metering pump is connected to a liquid outlet end of the second liquid supply assembly; as well as The liquid outlet of the first metering pump and the liquid outlet of the second metering pump are respectively connected to the liquid inlet of the mixer.

2. The automatic liquid dispensing system according to claim 1, characterized in that: The first liquid supply assembly includes a first liquid supply container and a first filter, the first filter is connected between the liquid outlet end of the first liquid supply container and the liquid inlet end of the first metering pump, and the second liquid supply assembly includes a second liquid supply container and a second filter, the second filter is connected between the liquid outlet end of the second liquid supply container and the liquid inlet end of the second metering pump.

3. The automatic liquid dispensing system according to claim 1, characterized in that: A first one-way valve is provided between the liquid outlet of the first liquid supply assembly and the liquid inlet of the first metering pump, and a second one-way valve is provided between the liquid outlet of the second liquid supply assembly and the liquid inlet of the second metering pump.

4. The automatic liquid dispensing system according to claim 1, characterized in that: The first metering pump also has a flushing liquid inlet and a flushing liquid outlet, and the flushing liquid inlet and the flushing liquid outlet of the first metering pump are respectively connected in sequence between the liquid outlet of the second liquid supply component and the liquid inlet of the second metering pump.

5. The automatic liquid dispensing system according to claim 1, characterized in that: The automatic liquid dispensing system further comprises a collecting container for collecting the dispensed liquid, and a liquid inlet end of the collecting container is connected to a liquid outlet end of the mixer.

6. The automatic liquid dispensing system according to claim 1, characterized in that: The mixer comprises: A housing having an inner cavity with one end open, and a liquid outlet provided on the housing, the liquid outlet forming the liquid outlet end of the mixer; A cover body is provided on the open end of the inner cavity of the shell, and a plurality of liquid inlets are provided on the cover body, each of the liquid inlets forming a liquid inlet end of the mixer; A mixing core is arranged in the inner cavity of the shell, and the outer wall of the mixing core is provided with a first spiral groove and a second spiral groove with opposite rotation directions. The first spiral groove and the second spiral groove are staggered and connected to each other. The first spiral groove and the second spiral groove form a spiral flow channel, and each of the liquid inlets is respectively connected to the first end of the spiral flow channel, and the liquid outlet is connected to the second end of the spiral flow channel.

7. The automatic liquid dispensing system according to claim 6, characterized in that: A first groove is provided on the first end surface of the mixing core, and a first mixing cavity is formed between the inner wall of the first groove and the cover body, the first end of the spiral flow channel and the liquid inlet are respectively connected to the first mixing cavity, and a second groove and a first axial mixing hole that runs through the thickness direction of the bottom wall of the first groove are provided on the bottom wall of the first groove, the first axial mixing hole connects the first end of the spiral flow channel and the first mixing cavity, and a first radial mixing hole that runs through the thickness direction of the second groove is provided on the side wall of the second groove, the first radial mixing hole connects the first end of the spiral flow channel and the first mixing cavity, the first axial mixing holes are uniformly distributed along the circumference of the bottom wall of the first groove, and the first radial mixing holes are uniformly distributed along the circumference of the side wall of the second groove.

8. The automatic liquid dispensing system according to claim 6, characterized in that: A second mixing chamber is formed between the second end surface of the mixing core and the inner wall of the shell cavity, the second mixing chamber is communicated with the liquid outlet, the second end of the spiral flow channel and the liquid outlet are respectively communicated with the second mixing chamber, a third groove is provided on the second end surface of the mixing core, and a second radial mixing hole is provided on the side wall of the third groove which runs through the thickness direction thereof, the second radial mixing hole communicates the second end of the spiral flow channel and the second mixing chamber, and there are at least two second radial mixing holes arranged opposite to each other.

9. The automatic liquid dispensing system according to claim 6, characterized in that: A first step portion is provided on the second end surface of the mixing core, a second step portion is provided on the inner side wall of the shell, a first seal is provided between the first step portion and the second step portion, and the first step portion presses the first seal onto the second step portion.

10. The automatic liquid dispensing system according to claim 6, characterized in that: A second seal is provided between the cover and the shell, and the cover presses the second seal against the open end of the inner cavity of the shell. A third seal is provided between the mixing core and the cover, and the cover presses the third seal against the first end surface of the mixing core.

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