Spray pipe assembly of drying tower and drying tower

Abstract

The utility model provides a spray pipe assembly of a drying tower and the drying tower, in order to achieve the purpose, according to one aspect of the utility model, the spray pipe assembly of the drying tower extends into the drying tower, and the spray pipe assembly of the drying tower comprises a first spray pipe, a second spray pipe, a third spray pipe and a fourth spray pipe, the second spraying pipe is arranged outside the first spraying pipe in a sleeving mode and extends into the drying tower, the first spraying pipe is connected with the second spraying pipe, a first channel is formed between the first spraying pipe and the second spraying pipe, and the second spraying pipe sprays the second material out of the first channel. According to the technical scheme provided by the invention, the problem that the instant solubility of the milk powder is poorly improved due to non-uniform addition of lecithin in the milk powder particles in related technologies is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of milk powder drying, in particular to a spray pipe assembly of a drying tower and a drying tower. Background Art

[0002] In the process of processing liquid milk into milk powder, a drying tower is needed to dry the liquid milk. The liquid milk is sprayed into the drying tower through a nozzle, and the drying tower dries the sprayed liquid milk droplets, and the dried liquid milk droplets form milk powder particles.

[0003] A static fluidized bed and a dynamic fluidized bed are connected to the downstream of the drying tower in sequence. In order to improve the instant solubility of milk powder, the related art generally uses a method of adding lecithin to the milk powder particles. Lecithin is sprayed and added to the milk powder particles processed by the drying tower between the static fluidized bed and the dynamic fluidized bed. However, due to the uneven distribution of milk powder particles on the static fluidized bed and the dynamic fluidized bed, the addition of lecithin to the milk powder particles is uneven, which leads to poor improvement in the instant solubility of milk powder. Utility Model Content

[0004] The main purpose of the utility model is to provide a spray pipe assembly of a drying tower and a drying tower, so as to solve the problem in the related art that lecithin is added unevenly in milk powder particles, resulting in poor improvement in the instant solubility of milk powder.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a nozzle assembly of a drying tower is provided, which extends into the tower body of the drying tower. The nozzle assembly of the drying tower includes: a first nozzle, which sprays out a first material and extends into the tower body; a second nozzle, which is sleeved outside the first nozzle and extends into the tower body, the first nozzle is connected to the second nozzle, and a first channel is provided between the first nozzle and the second nozzle, and the second nozzle sprays the second material from the first channel.

[0006] Furthermore, the nozzle assembly of the drying tower also includes a third nozzle, which is sleeved outside the second nozzle and extends into the tower body. The second nozzle is connected to the third nozzle, and a second channel is provided between the second nozzle and the third nozzle. The third nozzle sprays the cooling medium from the second channel.

[0007] Furthermore, an expanded pipe section is provided on one end of the second nozzle extending into the tower body, the expanded pipe section is located outside the third nozzle, and the diameter of the expanded pipe section gradually increases along the ejection direction of the second material.

[0008] Furthermore, one end of the first nozzle protrudes outward from the expanded pipe section.

[0009] Furthermore, the nozzle assembly of the drying tower also includes a mounting plate, which is detachably mounted on the tower body, and the first nozzle, the second nozzle and the third nozzle are all arranged on the mounting plate.

[0010] Furthermore, the first nozzle and the second nozzle as well as the second nozzle and the third nozzle are fixedly connected, and the third nozzle is movably arranged on the mounting plate.

[0011] Furthermore, a mounting hole is provided on the mounting plate, a sealing ring is provided in the mounting hole, the third nozzle is sealingly matched with the sealing ring, and the third nozzle is movably provided in the sealing ring.

[0012] Furthermore, the nozzle assembly of the drying tower also includes a raw material nozzle, which is arranged on the mounting plate and spaced apart from the third nozzle.

[0013] Furthermore, there are a plurality of raw material nozzles, and the plurality of raw material nozzles are arranged at equal intervals around the circumferential outer side of the third nozzle.

[0014] According to another aspect of the utility model, a drying tower is provided, comprising a tower body and a nozzle assembly arranged on the tower body, wherein the nozzle assembly is the nozzle assembly of the drying tower mentioned above.

[0015] By applying the technical solution of the utility model, the nozzle assembly of the drying tower extends into the tower body of the drying tower. The nozzle assembly of the drying tower includes a first nozzle and a second nozzle. The first nozzle sprays out the first material and extends into the tower body. The second nozzle is sleeved outside the first nozzle and extends into the tower body, the first nozzle is connected to the second nozzle, and there is a first channel between the first nozzle and the second nozzle, and the second nozzle sprays the second material from the first channel. In this way, one of the first material and the second material is milk powder particles, and the other of the first material and the second material is liquid lecithin. The structure of the first nozzle and the second nozzle is simple, which is convenient for processing and assembly. In addition, since the second nozzle is sleeved outside the first nozzle, it is further convenient for the contact and fusion of the milk powder particles and the liquid lecithin. When the milk powder particles are sprayed into the tower body, the liquid lecithin can also be sprayed into the tower body at the same time as the milk powder particles. The sprayed milk powder particles contact and fuse with the sprayed liquid lecithin droplets, and the wind force in the tower body makes the milk powder particles and the liquid lecithin droplets fuse more fully, and after drying in the tower body, milk powder particles added with lecithin can be obtained. In this way, lecithin and milk powder particles can be mixed more fully in the tower body, so that the addition of lecithin to milk powder is more uniform, and the instant solubility of milk powder is improved. Therefore, the technical solution of the present application effectively solves the problem of uneven addition of lecithin to milk powder particles in the related art, resulting in poor improvement in the instant solubility of milk powder. 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 three-dimensional structural schematic diagram of an embodiment of a drying tower according to the utility model is shown;

[0018] Figure 2 A three-dimensional structural schematic diagram of an embodiment of a spray pipe assembly of a drying tower according to the utility model is shown;

[0019] Figure 3 Shows Figure 2 A schematic diagram of a three-dimensional structure of a nozzle assembly of a drying tower from another perspective;

[0020] Figure 4 Shows Figure 2 A schematic top view of a nozzle assembly of a drying tower;

[0021] Figure 5 Shows Figure 2 A schematic transverse cross-sectional view of a first nozzle, a second nozzle and a third nozzle of a nozzle assembly of a drying tower.

[0022] The above drawings include the following reference numerals:

[0023] 10. The first nozzle;

[0024] 20. Second nozzle; 21. First channel; 22. Expanded pipe section;

[0025] 30. The third nozzle; 31. The second channel;

[0026] 40. Raw material nozzle;

[0027] 50. Installation disk;

[0028] 60. Tower body. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] 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.

[0032] like Figures 1 to 5 As shown, the nozzle assembly of the drying tower of this embodiment extends into the tower body 60 of the drying tower. The nozzle assembly of the drying tower includes a first nozzle 10 and a second nozzle 20. The first nozzle 10 sprays out the first material and extends into the tower body 60. The second nozzle 20 is sleeved outside the first nozzle 10 and extends into the tower body 60. The first nozzle 10 is connected to the second nozzle 20, and a first channel 21 is provided between the first nozzle 10 and the second nozzle 20. The second nozzle 20 sprays the second material from the first channel 21.

[0033] In this way, one of the first material and the second material is milk powder particles, and the other of the first material and the second material is liquid lecithin. The first nozzle 10 and the second nozzle 20 have simple structures and are easy to process and assemble. In addition, since the second nozzle 20 is sleeved outside the first nozzle 10, it is further convenient for the milk powder particles to contact and fuse with the liquid lecithin. When the milk powder particles are sprayed into the tower body 60, the liquid lecithin can also be sprayed into the tower body 60 at the same time as the milk powder particles. The sprayed milk powder particles contact and fuse with the sprayed liquid lecithin droplets, and under the action of the wind force in the tower body 60, the fusion of the milk powder particles and the liquid lecithin droplets is more sufficient, and the milk powder particles added with lecithin can be obtained after drying in the tower body 60. In this way, lecithin and milk powder particles can be mixed more fully in the tower body 60, so that the addition of lecithin in milk powder is more uniform, and the instant solubility of milk powder is improved. Therefore, the technical solution of the present application effectively solves the problem in the related art that lecithin is added unevenly in milk powder particles, resulting in poor improvement in the instant solubility of milk powder.

[0034] In the present embodiment, the first material is milk powder particles, which are ejected from the first nozzle 10. The second material is liquid lecithin, which is ejected from the first channel 21. The liquid lecithin is ejected with clean steam as a power source, and the temperature of the clean steam is relatively high, which can play a role in disinfection and improve fluidity. The liquid lecithin can be a pure lecithin solution or a mixture of lecithin and anhydrous butter. In addition to diluting the lecithin, the anhydrous butter can also reduce the viscosity of the lecithin and improve fluidity.

[0035] It should be noted that the first material and the second material may also be other substances, including but not limited to liquid materials and solid materials.

[0036] like Figures 1 to 5 As shown, the nozzle assembly of the drying tower also includes a third nozzle 30, which is sleeved outside the second nozzle 20 and extends into the tower body 60. The second nozzle 20 is connected to the third nozzle 30, and a second channel 31 is provided between the second nozzle 20 and the third nozzle 30, and the third nozzle 30 sprays the cooling medium from the second channel 31. The second nozzle 20 and the third nozzle 30 have a simple structure and are easy to process and assemble. The cooling medium sprayed in the second channel 31 can play the role of cooling the first nozzle 10 and the second nozzle 20 to reduce the probability of gelatinization of milk powder. In addition, the cooling medium sprayed in the second channel 31 can guide the first material sprayed in the first nozzle 10 and the second material sprayed in the first channel 21, further making the fusion of milk powder particles and liquid lecithin more complete.

[0037] In this embodiment, the cooling medium is clean air.

[0038] like Figures 1 to 5 As shown, a flared pipe section 22 is provided on one end of the second nozzle 20 extending into the tower body 60. The flared pipe section 22 is located outside the third nozzle 30, and the diameter of the flared pipe section 22 gradually increases along the ejection direction of the second material. In this way, the flared pipe section 22 can guide the ejection direction of the second material, so that the second material can gradually expand along the ejection direction, increase the distribution of the second material in the tower body 60, and further make the fusion of milk powder particles and liquid lecithin more complete. In addition, the setting of the flared pipe section 22 can reduce the pressure of the second material when it is ejected, and reduce the interference with the ejection direction of the first material when it is ejected.

[0039] like Figures 1 to 5 As shown, one end of the first nozzle 10 protrudes outwardly from the expanded pipe section 22. In this way, the first material can be sprayed into the diffused second material, so that the first material and the second material are more fully fused.

[0040] like Figures 1 to 5 As shown, the nozzle assembly of the drying tower further includes a mounting plate 50, which is detachably mounted on the tower body 60, and the first nozzle 10, the second nozzle 20 and the third nozzle 30 are all arranged on the mounting plate 50. The arrangement of the mounting plate 50 facilitates the installation of the first nozzle 10, the second nozzle 20 and the third nozzle 30 on the tower body 60, and also facilitates the disassembly, cleaning and maintenance of the first nozzle 10, the second nozzle 20 and the third nozzle 30.

[0041] like Figures 1 to 5 As shown, the first nozzle 10 and the second nozzle 20, as well as the second nozzle 20 and the third nozzle 30 are fixedly connected, and the third nozzle 30 is movably arranged on the mounting plate 50. In this way, the third nozzle 30 moves on the mounting plate 50 to drive the first nozzle 10 and the second nozzle 20 to move on the mounting plate 50 together. The movement of the third nozzle 30 on the mounting plate 50 makes the length of the third nozzle 30 extending into the tower body 60 adjustable, so as to adjust the length of the first nozzle 10, the second nozzle 20 and the third nozzle 30 extending into the tower body 60 according to the situation, so that the fusion of lecithin and milk powder particles is more complete.

[0042] In this embodiment, a first annular plate is provided between the feed end of the first nozzle 10 and the feed end of the second nozzle 20, and the feed end of the first nozzle 10 and the feed end of the second nozzle 20 are fixedly connected and sealed by the first annular plate. A second annular plate is provided between the feed end of the second nozzle 20 and the feed end of the third nozzle 30, and the feed end of the second nozzle 20 and the feed end of the third nozzle 30 are fixedly connected and sealed by the second annular plate. A first connecting rod is connected between the side wall of the first nozzle 10 and the side wall of the second nozzle 20, and the first connecting rod is located in the first channel 21, so that the position between the first nozzle 10 and the second nozzle 20 is relatively fixed. A second connecting rod is connected between the side wall of the second nozzle 20 and the side wall of the third nozzle 30, and the second connecting rod is located in the second channel 31, so that the position between the second nozzle 20 and the third nozzle 30 is relatively fixed.

[0043] like Figures 1 to 5 As shown, a mounting hole is provided on the mounting plate 50, and a sealing ring is provided in the mounting hole. The third nozzle 30 is sealed with the sealing ring, and the third nozzle 30 is movably provided in the sealing ring. The structure of the mounting hole and the sealing ring is simple and easy to process. The cooperation between the sealing ring and the third nozzle 30 facilitates the movement of the third nozzle 30 on the mounting plate 50, and enables the third nozzle 30 to be sealed.

[0044] like Figures 1 to 5 As shown, the nozzle assembly of the drying tower also includes a raw material nozzle 40, which is arranged on the mounting plate 50 and is spaced apart from the third nozzle 30. The raw material nozzle 40 can spray liquid milk into the tower body 60, so that the liquid milk can be fused with liquid lecithin, so that the fused liquid milk and liquid lecithin can obtain milk powder particles fully fused with lecithin after drying the tower body 60, thereby improving the instant solubility of the milk powder. In addition, through the above-mentioned arrangement, liquid lecithin can participate in the agglomeration of milk powder particles, so that the volume of milk powder particles can be larger and loose, so as to improve the wetting speed and dispersion speed of milk powder when contacting water. The larger volume of milk powder particles can also reduce the amount of milk powder particles blown away, play a role in dust reduction, and improve the yield rate of milk powder.

[0045] like Figures 1 to 5 As shown, there are multiple raw material nozzles 40, and the arrangement of multiple raw material nozzles 40 improves the efficiency of processing liquid milk into milk powder particles. Multiple raw material nozzles 40 are arranged at equal intervals around the circumferential outer side of the third nozzle 30 to further make the fusion of liquid milk and liquid lecithin more uniform and sufficient.

[0046] In this embodiment, liquid milk droplets are sprayed out from the raw material spray pipe 40, and liquid lecithin is sprayed out from the first channel 21. The liquid milk droplets can be fused with the liquid lecithin. The liquid milk droplets are fused with the lecithin and dried to obtain larger milk powder particles, which are then transported from the tower body 60 to the next process. The dried smaller milk powder particles are collected and then sprayed out from the first spray pipe 10. The smaller milk powder particles sprayed from the first spray pipe 10 can continue to be fused with the liquid milk droplets and the liquid lecithin to obtain larger milk powder particles, which are then transported from the tower body 60 to the next process.

[0047] In this embodiment, the addition rate of the liquid milk droplets sprayed from the raw material spray pipe 40 is 3 tons per hour, and the pressure is 4 MPa. The ratio of lecithin to anhydrous butter is 7:3, the temperature of lecithin and anhydrous butter is 60 degrees Celsius, and the addition rate of lecithin and anhydrous butter is 5 kg per hour. The liquid lecithin and anhydrous butter are sprayed with clean steam as the power source, and the pressure of the clean steam is 5 MPa.

[0048] Apply the technical solution of this embodiment, prepare according to the mixing ratio and water temperature required in the labels of different milk powder products, take distilled water of a specific temperature into a 500mL beaker, place a pumping plate and a stainless steel funnel above the beaker, pour the weighed milk powder into the stainless steel funnel with the pumping plate, and make the surface of the milk powder flat. Pull the pumping plate away lightly and quickly, start the stopwatch at the same time as the pumping plate is pulled away, stop the timing when all the milk powder products are immersed in water, and record the time used. When the distilled water temperature is 50°C, the dissolution time of the milk powder using the method of adding lecithin in the relevant technology is an average of 60 seconds, and the dissolution time of the milk powder using the technical solution of this embodiment is an average of 32 seconds. When the distilled water temperature is 25°C, the dissolution time of the milk powder using the method of adding lecithin in the relevant technology is an average of 60 seconds, and the dissolution time of the milk powder using the technical solution of this embodiment is an average of 43 seconds.

[0049] The present application also provides a drying tower, which includes a tower body 60 and a nozzle assembly disposed on the tower body 60, and the nozzle assembly is the nozzle assembly of the drying tower described above. Since the nozzle assembly of the drying tower described above can solve the problem in the related art that lecithin is added unevenly in milk powder particles, resulting in poor improvement in the instant solubility of milk powder, the drying tower having the nozzle assembly can solve the same technical problem.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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 nozzle assembly for a drying tower, extending into a tower body (60) of the drying tower, characterized in that: The spray pipe assembly of the drying tower comprises: A first nozzle (10) for spraying a first material and extending into the tower body (60); The second nozzle (20) is sleeved outside the first nozzle (10) and extends into the tower body (60); the first nozzle (10) is connected to the second nozzle (20), and a first channel (21) is provided between the first nozzle (10) and the second nozzle (20); the second nozzle (20) sprays the second material out of the first channel (21).

2. The nozzle assembly of the drying tower according to claim 1, characterized in that: The nozzle assembly of the drying tower further comprises a third nozzle (30), wherein the third nozzle (30) is sleeved outside the second nozzle (20) and extends into the tower body (60), the second nozzle (20) is connected to the third nozzle (30), and a second channel (31) is provided between the second nozzle (20) and the third nozzle (30), and the third nozzle (30) sprays a cooling medium from the second channel (31).

3. The nozzle assembly of the drying tower according to claim 2, characterized in that: An expanded pipe section (22) is provided on one end of the second nozzle (20) extending into the tower body (60). The expanded pipe section (22) is located outside the third nozzle (30). The diameter of the expanded pipe section (22) gradually increases along the ejection direction of the second material.

4. The nozzle assembly of the drying tower according to claim 3, characterized in that: One end of the first nozzle (10) protrudes outward from the expanded pipe section (22).

5. The nozzle assembly of the drying tower according to claim 2, characterized in that: The nozzle assembly of the drying tower further comprises a mounting plate (50), wherein the mounting plate (50) is detachably mounted on the tower body (60), and the first nozzle (10), the second nozzle (20) and the third nozzle (30) are all arranged on the mounting plate (50).

6. The nozzle assembly of the drying tower according to claim 5, characterized in that: The first nozzle (10) and the second nozzle (20) as well as the second nozzle (20) and the third nozzle (30) are fixedly connected, and the third nozzle (30) is movably arranged on the mounting plate (50).

7. The nozzle assembly of the drying tower according to claim 6, characterized in that: The mounting plate (50) is provided with a mounting hole, a sealing ring is provided in the mounting hole, the third nozzle (30) is sealingly matched with the sealing ring, and the third nozzle (30) is movably arranged in the sealing ring.

8. The nozzle assembly of the drying tower according to claim 5, characterized in that: The nozzle assembly of the drying tower further comprises a raw material nozzle (40), wherein the raw material nozzle (40) is arranged on the mounting plate (50) and is spaced apart from the third nozzle (30).

9. The nozzle assembly of the drying tower according to claim 8, characterized in that: There are a plurality of raw material nozzles (40), and the plurality of raw material nozzles (40) are arranged at equal intervals around the circumferential outer side of the third nozzle (30).

10. A drying tower, comprising a tower body (60) and a nozzle assembly arranged on the tower body (60), characterized in that: The nozzle assembly is the nozzle assembly of a drying tower according to any one of claims 1 to 9.

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