Preparation equipment of milk powder

The milk powder preparation device filters vegetable oil and mixture together, addressing the risk of foreign matter and microbial contamination, ensuring thorough filtration and improved homogenization.

CN222239040UActive Publication Date: 2024-12-27HEILONGJIANG FEIHE DAIRY CO LTD +4
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Patent Information

Application Number
CN202421053163.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-14
Publication Date
2024-12-27
Estimated Expiration
2034-05-14

AI Technical Summary

Technical Problem

Existing milk powder preparation processes fail to filter vegetable oil through a filter, leading to a risk of foreign matter generation.

Method used

A milk powder preparation device comprising a batching tank, raw milk tank, vacuum mixer, wet mixing tank, oil tank, filter, and homogenizer, where vegetable oil and a more uniform mixture are combined and filtered together before entering the homogenizer, ensuring thorough filtration and reducing the risk of foreign matter.

Benefits of technology

The solution effectively filters vegetable oil and the mixture, reducing the risk of foreign matter and microbial contamination, while enhancing homogenization efficiency and maintaining milk powder quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides milk powder preparation equipment. The milk powder preparation equipment comprises a batching tank; the raw milk tank is arranged on one side of the mixing tank; the vacuum mixer is provided with a first feeding port, a second feeding port, a first circulating port and a first discharging port, the batching tank is connected with the first feeding port, and the raw milk tank is connected with the second feeding port; the wet mixing tank is provided with a second circulating port, a second discharge port and a third discharge port; an oil tank; the filter is arranged at the downstream of the wet mixing tank and is connected with the third discharging port through a first pipeline, the oil tank is connected to the first pipeline through a second pipeline, and the intersection of the second pipeline and the first pipeline is located between the filter and the third discharging port; and a homogenizer. According to the technical scheme, the problems that in the milk powder preparation process in the prior art, vegetable oil is not filtered through a filter, and the risk of foreign matter generation exists in milk powder preparation equipment are effectively solved.
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Description

Technical Field

[0001] The utility model relates to the technical field of powder making, in particular to a device for preparing milk powder. Background Art

[0002] In the related art, the preparation equipment of milk powder includes a vacuum mixer, a wet mixing tank, a filter and a homogenizer connected in sequence. The ingredients and raw milk are added to the vacuum mixer for mixing, and the air generated inside the mixing barrel is extracted by the vacuum pump of the vacuum mixer. The ingredients and raw milk are mixed after passing through the wet mixing tank, and the mixture is fully wet mixed by the stirring device of the wet mixing tank, and then the mixture of the ingredients and raw milk is filtered through a filter to obtain a pure liquid, and then the mixture is strongly sheared and mixed by the high-speed rotation of the homogenizer of the homogenizer, so that the mixture reaches a uniform state.

[0003] In the process of preparing the above milk powder, the mixed material is filtered through the filter and then enters the homogenizer together with the vegetable oil. The homogenizer of the homogenizer rotates at a high speed to strongly shear and mix the mixed material and the vegetable oil. In this way, the vegetable oil is not filtered through the filter, and there is a risk of foreign matter in the milk powder preparation equipment. Utility Model Content

[0004] The main purpose of the utility model is to provide a milk powder preparation device to solve the problem that in the process of preparing milk powder in the related art, vegetable oil is not filtered through a filter, and there is a risk of foreign matter being generated in the milk powder preparation device.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a preparation device for milk powder, comprising: a batching tank; a raw milk tank, which is arranged on one side of the batching tank; a vacuum mixer, on which a first feeding port, a second feeding port, a first circulation port and a first discharge port are arranged, the batching tank is connected to the first feeding port, and the raw milk tank is connected to the second feeding port; a wet mixing tank, on which a second circulation port, a second discharge port and a third discharge port are arranged, the first discharge port is connected to the second circulation port, and the second discharge port is connected to the first circulation port; an oil tank, which is arranged on one side of the raw milk tank; a filter, which is arranged downstream of the wet mixing tank, and the filter is connected to the third discharge port through a first pipeline, the oil tank is connected to the first pipeline through a second pipeline, and the intersection of the second pipeline and the first pipeline is located between the filter and the third discharge port; a homogenizer, which is connected to the filter.

[0006] Furthermore, the milk powder preparation equipment also includes a heat exchanger, which is arranged on the first pipeline and located between the intersection and the filter.

[0007] Furthermore, the milk powder preparation equipment also includes a first pump body, which is arranged on the first pipeline and located between the intersection and the heat exchanger.

[0008] Furthermore, the heat exchanger includes a heating shell, a steam pipeline, a water inlet pipeline and a water outlet pipeline. The heating shell is arranged around the outside of part of the first pipeline. A liquid inlet pipe and a liquid outlet pipe are arranged on the heating shell. The steam pipeline and the water inlet pipeline are both connected to the liquid inlet pipe, and the water outlet pipeline is connected to the liquid outlet pipe.

[0009] Furthermore, a first temperature measuring meter is provided on the heating shell, and the first temperature measuring meter detects the temperature of the first pipeline. A second temperature measuring meter is provided on the liquid inlet pipe, and the second temperature measuring meter detects the temperature of the liquid inlet pipe.

[0010] Furthermore, a one-way valve is provided on the second pipeline, and the one-way valve is located between the oil tank and the intersection.

[0011] Furthermore, the milk powder preparation equipment also includes an oil inlet pipeline and a second pump body, the oil inlet pipeline is connected to the inlet of the oil tank, one end of the second pipeline is connected to the outlet of the oil tank, and the second pump body is arranged between the outlet of the oil tank and the second pipeline.

[0012] Furthermore, the milk powder preparation equipment also includes a cleaning liquid supply pipe and a cleaning return pipe. The cleaning liquid supply pipe is connected to the oil inlet pipeline through a first valve, and the cleaning return pipe is connected to the intersection through a second valve.

[0013] Furthermore, there are multiple wet mixing tanks arranged in parallel.

[0014] Furthermore, the milk powder preparation equipment also includes a temporary storage tank, which is arranged downstream of the homogenizer and connected to the homogenizer.

[0015] Applying the technical solution of the utility model, the preparation equipment of milk powder includes: a batching tank, a raw milk tank, a vacuum mixer, a wet mixing tank, an oil tank, a filter and a homogenizer. The raw milk tank is arranged on one side of the batching tank. The vacuum mixer is provided with a first feeding port, a second feeding port, a first circulation port and a first discharge port, the batching tank is connected to the first feeding port, and the raw milk tank is connected to the second feeding port. The wet mixing tank is provided with a second circulation port, a second discharge port and a third discharge port, the first discharge port is connected to the second circulation port, and the second discharge port is connected to the first circulation port. The oil tank is arranged on one side of the raw milk tank. The filter is arranged downstream of the wet mixing tank, and the filter is connected to the third discharge port through a first pipeline, the oil tank is connected to the first pipeline through a second pipeline, and the intersection of the second pipeline and the first pipeline is located between the filter and the third discharge port. The homogenizer is connected to the filter. The ingredients in the batching tank and the raw milk in the raw milk tank are added to the vacuum mixer for mixing, and the vacuum mixer can extract the air generated therein, and then enter the wet mixing tank for wet mixing, and the wet mixing tank is used to fully wet mix the mixture, and the wet mixing tank can be returned to the vacuum mixer for mixing after sufficient wet mixing, so that the mixture can be repeatedly circulated between the wet mixing tank and the vacuum mixer, and the mixture is mixed while vacuuming, so that the mixture is mixed more evenly and then reaches the intersection through the first pipeline, and the vegetable oil in the oil tank reaches the intersection through the second pipeline. At this time, the vegetable oil and the more uniform mixture are combined at the intersection, and enter the filter together for filtration, and a pure liquid can be obtained, and then the pure liquid is strongly sheared and mixed through the high-speed rotation of the homogenizer, so that the pure liquid reaches a uniform state. In the process of preparing the above-mentioned milk powder, since the vegetable oil and the more uniform mixture are filtered through the filter together, the risk of generating foreign matter can be reduced. Therefore, the technical solution of the present application effectively solves the problem in the related art that the vegetable oil is not filtered through the filter during the preparation of milk powder, and there is a risk of foreign matter being generated in the milk powder preparation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of an embodiment of a milk powder preparation device according to the utility model is shown;

[0018] Figure 2 A simplified structural diagram of an embodiment of a milk powder preparation device according to the utility model is shown;

[0019] Figure 3 Shows Figure 2 An enlarged schematic diagram of a milk powder preparation device at A;

[0020] Figure 4 Shows Figure 2 An enlarged schematic diagram of part B of the milk powder preparation equipment.

[0021] The above drawings include the following reference numerals:

[0022] 11. batching tank; 12. raw milk tank; 13. vacuum mixer; 14. wet mixing tank; 141. third discharge port; 15. oil tank; 16. filter; 17. homogenizer; 18. heat exchanger; 181. heating shell; 182. steam pipeline; 183. water inlet pipeline; 184. water outlet pipeline; 19. first pump body;

[0023] 20. One-way valve; 21. Second pump body; 22. First valve; 23. Second valve; 24. Temporary storage tank;

[0024] 31. First pipeline; 32. Second pipeline; 33. Junction; 34. Liquid inlet pipe; 35. Liquid outlet pipe; 36. Oil inlet pipeline; 37. Cleaning liquid supply pipe; 38. Cleaning return pipe;

[0025] 41. A first temperature measuring meter; 42. A second temperature measuring meter. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0029] like Figures 1 to 4 As shown, the present application provides a milk powder preparation device, and an embodiment of the milk powder preparation device includes: a batching tank 11, a raw milk tank 12, a vacuum mixer 13, a wet mixing tank 14, an oil tank 15, a filter 16 and a homogenizer 17. The raw milk tank 12 is arranged on one side of the batching tank 11. The vacuum mixer 13 is provided with a first feeding port, a second feeding port, a first circulation port and a first discharge port, the batching tank 11 is connected to the first feeding port, and the raw milk tank 12 is connected to the second feeding port. The wet mixing tank 14 is provided with a second circulation port, a second discharge port and a third discharge port 141, the first discharge port is connected to the second circulation port, and the second discharge port is connected to the first circulation port. The oil tank 15 is arranged on one side of the raw milk tank 12. The filter 16 is disposed downstream of the wet mixing tank 14, and the filter 16 is connected to the third discharge port 141 through the first pipeline 31, the oil tank 15 is connected to the first pipeline 31 through the second pipeline 32, and the intersection 33 of the second pipeline 32 and the first pipeline 31 is located between the filter 16 and the third discharge port 141. The homogenizer 17 is connected to the filter 16.

[0030] By applying the technical solution of this embodiment, the ingredients in the ingredient tank 11 and the raw milk in the raw milk tank 12 are added to the vacuum mixer 13 for mixing, and the vacuum mixer 13 can extract the air generated therein, and after mixing, enter the wet mixing tank 14 for wet mixing, and the wet mixing tank 14 fully stirs the mixed material for wet mixing. After the wet mixing tank 14 fully stirs the mixed material for wet mixing, it can return to the vacuum mixer 13 for mixing, so that it can be repeatedly circulated between the wet mixing tank 14 and the vacuum mixer 13, and vacuum is drawn while mixing, so that the mixed material is mixed more evenly and then reaches the intersection 33 through the first pipeline 31, and the vegetable oil in the oil tank 15 reaches the intersection 33 through the second pipeline 32. At this time, the vegetable oil and the more uniform mixed material are combined at the intersection 33, and enter the filter 16 together for filtration, so that a pure liquid can be obtained, and then the pure liquid is strongly sheared and mixed by the high-speed rotation of the homogenizer, so that the pure liquid reaches a uniform state, that is, a homogenization effect. In the process of preparing the above-mentioned milk powder, since the vegetable oil and the relatively uniform mixture are filtered through the filter 16 together, the risk of generating foreign matter can be reduced. Therefore, the technical solution of this embodiment effectively solves the problem that in the process of preparing milk powder in the related art, the vegetable oil is not filtered through the filter, and there is a risk of generating foreign matter in the milk powder preparation equipment. The filter in this embodiment is preferably a bag filter.

[0031] It should be noted that the “downstream” in the present application means passing through A first and then B in sequence, and the “upstream” means passing through B first and then A in sequence. For example, when A is the wet mixing tank 14, B is the filter 16.

[0032] In the related art, when adding vegetable oil upstream of the homogenizer, the pressure of the more uniform mixture is higher than the pressure of the vegetable oil, which may cause pressure surge, and the more uniform mixture is pumped into the pipeline of the vegetable oil, which may cause microbial risks and material cross-risks. In the present application, the more uniform mixture and the vegetable oil are first filtered by the filter upstream of the homogenizer to prevent the pressure of the first pipeline 31 and the second pipeline 32 from peaking, greatly reducing the microbial risk caused by the more uniform mixture entering the second pipeline 32, and reducing the risk of material cross-risk.

[0033] like Figures 1 to 4As shown, the milk powder preparation equipment also includes a heat exchanger 18, which is arranged on the first pipeline 31, and the heat exchanger 18 is located between the intersection 33 and the filter 16. The heat exchanger 18 can heat the more uniform mixture and vegetable oil, and when filtered through the filter after heating, the filtration is more delicate, and when the homogenization of the homogenizer is performed later, a better homogenization effect can be achieved. In addition, the vegetable oil of the present application directly flows to the intersection and merges with the more uniform mixture, avoiding the addition of vegetable oil in the vacuum mixer and the wet mixing tank in the related art to contact with air, reducing the increase in the oxidation probability of the milk powder, and avoiding affecting the oil smell of the milk powder during the shelf life.

[0034] like Figures 1 to 4 As shown, in order to make the more uniform mixture and vegetable oil have greater kinetic energy after confluence so as to facilitate flowing to the downstream filter 16 and homogenizer 17, the milk powder preparation equipment also includes a first pump body 19, which is arranged on the first pipeline 31, and the first pump body 19 is located between the intersection 33 and the heat exchanger 18.

[0035] like Figure 2 and Figure 3 As shown, the heat exchanger 18 includes a heating shell 181, a steam pipeline 182, a water inlet pipeline 183 and a water outlet pipeline 184. The heating shell 181 is arranged around the outside of a portion of the first pipeline 31. The heating shell 181 is provided with a liquid inlet pipe 34 and a liquid outlet pipe 35. The steam pipeline 182 and the water inlet pipeline 183 are both connected to the liquid inlet pipe 34, and the water outlet pipeline 184 is connected to the liquid outlet pipe 35. In this way, the steam in the steam pipeline 182 and the water in the water inlet pipeline 183 are adjusted to obtain hot water of a suitable temperature, so that the hot water can heat the more uniform mixed material and vegetable oil passing through the first pipeline 31.

[0036] like Figure 2 and Figure 3 As shown, the heating shell 181 is provided with a first temperature measuring meter 41, which detects the temperature of the first pipeline 31, and the liquid inlet pipe 34 is provided with a second temperature measuring meter 42, which detects the temperature of the liquid inlet pipe 34. In this way, the temperature measured by the first temperature measuring meter 41 is observed, and the content of steam and water in the liquid inlet pipe 34 is adjusted according to the second temperature measuring meter 42, so that the temperature measured by the first temperature measuring meter 41 is within the range of 50°C to 60°C, so that the mixed material and vegetable oil can be heated more evenly, and then filtered through the filter, and the filtration is more delicate, and the homogenization effect of the homogenizer can be achieved later.

[0037] like Figure 2 and Figure 3As shown, in order to effectively prevent the pressure of the first pipeline 31 and the second pipeline 32 from collided, a more uniform mixture enters the second pipeline 32, and a one-way valve 20 is provided on the second pipeline 32. The one-way valve 20 is located between the oil tank 15 and the intersection 33.

[0038] like Figure 2 and Figure 4 As shown, the milk powder preparation device further includes an oil inlet pipeline 36 and a second pump body 21, the oil inlet pipeline 36 is connected to the inlet of the oil tank 15, one end of the second pipeline 32 is connected to the outlet of the oil tank 15, and the second pump body 21 is arranged between the outlet of the oil tank 15 and the second pipeline 32. The arrangement of the second pump body 21 can provide kinetic energy for the vegetable oil in the second pipeline 32, so that the vegetable oil flows in the second pipeline 32 to smoothly reach the intersection 33.

[0039] like Figures 2 to 4 As shown, the milk powder preparation equipment further includes a cleaning liquid supply pipe 37 and a cleaning return pipe 38. The cleaning liquid supply pipe 37 is connected to the oil inlet pipeline 36 through the first valve 22, and the cleaning return pipe 38 is connected to the intersection 33 through the second valve 23. When the milk powder preparation equipment completes powder making, it is necessary to clean the oil inlet pipeline 36, the second pipeline 32 and the oil tank 15. First, the first valve 22 and the second valve 23 are opened, and the cleaning liquid enters the oil inlet pipeline 36 from the cleaning liquid supply pipe 37, then enters the oil tank 15, and then enters the second pipeline 32, and enters the cleaning return pipe 38 from the intersection 33 to be discharged.

[0040] like Figure 2 and Figure 3 As shown, in order to improve the efficiency and effect of fully stirring and mixing the mixed materials, a plurality of wet mixing tanks 14 are arranged in parallel.

[0041] like Figure 1 and Figure 2 As shown, the milk powder preparation equipment also includes a temporary storage tank 24, which is arranged downstream of the homogenizer 17 and connected to the homogenizer 17. The mixed material after homogenization enters the temporary storage tank 24 for cooling and then storage.

[0042] The milk powder preparation equipment further includes a concentration treatment device disposed downstream of the temporary storage tank 24 and connected to the temporary storage tank 24, and a drying treatment device disposed downstream of the concentration treatment device and connected to the concentration treatment device. The mixed material in the temporary storage tank 24 is concentrated by the concentration treatment device and dried by the drying treatment device to obtain milk powder.

[0043] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0044] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0045] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0046] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A milk powder preparation device, characterized in that: include: Mixing tank (11); A raw milk tank (12) is arranged on one side of the mixing tank (11); A vacuum mixer (13), wherein the vacuum mixer (13) is provided with a first feeding port, a second feeding port, a first circulation port and a first discharge port, the batching tank (11) is connected to the first feeding port, and the raw milk tank (12) is connected to the second feeding port; A wet mixing tank (14), wherein the wet mixing tank (14) is provided with a second circulation port, a second discharge port and a third discharge port (141), wherein the first discharge port is connected to the second circulation port, and the second discharge port is connected to the first circulation port; An oil tank (15) is arranged on one side of the raw milk tank (12); a filter (16), the filter (16) being arranged downstream of the wet mixing tank (14), and the filter (16) being connected to the third discharge port (141) via a first pipeline (31), the oil tank (15) being connected to the first pipeline (31) via a second pipeline (32), and the intersection (33) of the second pipeline (32) and the first pipeline (31) being located between the filter (16) and the third discharge port (141); A homogenizer (17) is connected to the filter (16).

2. The milk powder preparation device according to claim 1, characterized in that: The milk powder preparation device further comprises a heat exchanger (18), wherein the heat exchanger (18) is arranged on the first pipeline (31), and the heat exchanger (18) is located between the intersection (33) and the filter (16).

3. The milk powder preparation device according to claim 2, characterized in that: The milk powder preparation device further comprises a first pump body (19), wherein the first pump body (19) is arranged on the first pipeline (31), and the first pump body (19) is located between the intersection (33) and the heat exchanger (18).

4. The milk powder preparation device according to claim 2, characterized in that: The heat exchanger (18) comprises a heating shell (181), a steam pipeline (182), a water inlet pipeline (183) and a water outlet pipeline (184); the heating shell (181) is arranged around the outside of a portion of the first pipeline (31); a liquid inlet pipe (34) and a liquid outlet pipe (35) are arranged on the heating shell (181); the steam pipeline (182) and the water inlet pipeline (183) are both connected to the liquid inlet pipe (34); and the water outlet pipeline (184) is connected to the liquid outlet pipe (35).

5. The milk powder preparation device according to claim 4, characterized in that: The heating shell (181) is provided with a first temperature measuring meter (41), and the first temperature measuring meter (41) detects the temperature of the first pipeline (31); the liquid inlet pipe (34) is provided with a second temperature measuring meter (42), and the second temperature measuring meter (42) detects the temperature of the liquid inlet pipe (34).

6. The milk powder preparation device according to claim 1, characterized in that: A one-way valve (20) is provided on the second pipeline (32), and the one-way valve (20) is located between the oil tank (15) and the intersection (33).

7. The milk powder preparation device according to claim 1, characterized in that: The milk powder preparation device further comprises an oil inlet pipeline (36) and a second pump body (21); the oil inlet pipeline (36) is connected to the inlet of the oil tank (15); one end of the second pipeline (32) is connected to the outlet of the oil tank (15); and the second pump body (21) is arranged between the outlet of the oil tank (15) and the second pipeline (32).

8. The milk powder preparation device according to claim 7, characterized in that: The milk powder preparation equipment further comprises a cleaning liquid supply pipe (37) and a cleaning return pipe (38); the cleaning liquid supply pipe (37) is connected to the oil inlet pipeline (36) via a first valve (22); and the cleaning return pipe (38) is connected to the intersection (33) via a second valve (23).

9. The milk powder preparation device according to claim 1, characterized in that: The wet mixing tanks (14) are multiple and arranged in parallel.

10. The milk powder preparation device according to claim 1, characterized in that: The milk powder preparation equipment further comprises a temporary storage tank (24), wherein the temporary storage tank (24) is arranged downstream of the homogenizer (17) and connected to the homogenizer (17).