Filter and spray drying device with same

Abstract

The utility model provides a filter and a spray drying device with the same, and the filter comprises a filter piece, a filter element, a filter element, a filter element and a filter element, and the filter element is provided with a filter cavity, a filter inlet and a filter outlet, the filter inlet and the filter outlet are communicated with the filter cavity; the magnetic bar comprises a sealing pipe and a plurality of magnetic columns, the sealing pipe is arranged in the filtering piece and provided with a sealing cavity, and the magnetic columns are arranged in the sealing cavity at intervals in the axial direction of the sealing pipe. According to the technical scheme provided by the invention, the problem that a filter arranged between the concentrated milk tank and the high-pressure pump only intercepts large-particle foreign matters and has a limited interception effect on metal foreign matters in front of the high-pressure pump in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of milk powder production equipment, in particular to a filter and a spray drying device having the same. Background Art

[0002] When sampling the concentrated milk in the concentrated milk tank for impurity filtering, a small amount of metal foreign matter was found in the concentrated milk, and metal foreign matter was also found in the iron remover in the drying tower located downstream of the concentrated milk tank. Considering that metal foreign matter will affect the quality of milk powder products and increase the wear of the high-pressure pump located downstream of the concentrated milk tank, it will reduce the service life of the high-pressure pump.

[0003] In the related art, a filter is arranged between the concentrated milk tank and the high-pressure pump, and an iron remover is installed at the finished product end or the semi-finished product end of the milk powder to reduce impurities in the milk powder product.

[0004] However, the filter arranged between the concentrated milk tank and the high-pressure pump in the related art only intercepts large-particle foreign matter, but lacks the interception of metal foreign matter. There is no interception of metal foreign matter from the pre-treatment wet mixing to the powder under the drying tower, and the effect of intercepting metal foreign matter in front of the high-pressure pump is limited. It also does not take into account that the friction caused by the metal foreign matter when the high-pressure pump is running will generate new metal foreign matter that will enter the milk powder product. Utility Model Content

[0005] The utility model provides a filter and a spray drying device having the same, so as to solve the problem in the related art that the filter arranged between the concentrated milk tank and the high-pressure pump only intercepts large-particle foreign matter and has limited effect on intercepting metal foreign matter in front of the high-pressure pump.

[0006] According to one aspect of the utility model, a filter is provided, which includes: a filter element, having a filter cavity and a filter inlet and a filter outlet connected to the filter cavity; a magnetic rod, including a sealing tube and a plurality of magnetic columns, the sealing tube is arranged in the filter cavity, the sealing tube has a sealing cavity, and the plurality of magnetic columns are arranged in the sealing cavity at intervals along the axial direction of the sealing tube.

[0007] Furthermore, the filter element includes: a shell, a filter inlet and a filter outlet are arranged on the shell; a filter element is arranged in the shell, the filter cavity includes a front filter cavity arranged inside the filter element and a rear filter cavity arranged between the filter element and the shell, the filter inlet is connected with the front filter cavity, the filter outlet is connected with the rear filter cavity, the front filter cavity and the rear filter cavity are connected through the filter hole of the filter element, and the sealing tube is arranged in the front filter cavity.

[0008] Furthermore, the magnetic bar also includes a fixing plate arranged at the upper end of the sealing tube, the upper end of the filter element is connected to the shell, and the fixing plate is clamped between the upper end of the filter element and the shell.

[0009] Furthermore, the filter inlet is arranged at the lower end of the shell, the filter element is a cylindrical structure, the filter hole passes through the side wall of the filter element, the lower end of the filter element abuts the lower end of the shell, the lower end opening of the filter element is connected to the filter inlet, and the upper end of the filter element abuts the shell to close the upper end opening of the filter element.

[0010] Further, the distance between the lower end of the sealing tube and the lower end of the filter element is between 4 cm and 6 cm; and / or, the filter outlet is arranged on the side wall of the shell and is located in the upper section of the shell.

[0011] Furthermore, the shell includes a detachably connected outer shell and a top cover, the filter hole, the filter inlet and the filter outlet are all arranged on the outer shell, the outer wall of the upper end of the filter element has an external thread, the lower surface of the top cover is provided with a mounting hole, and the inner wall of the mounting hole is provided with an internal thread matching the external thread, the upper end of the filter element and the top cover are threadedly connected, and the fixing plate is clamped between the upper end of the filter element and the top cover.

[0012] Furthermore, the ratio of the diameter of the sealing tube to the diameter of the filter element is between 0.35 and 0.45.

[0013] Furthermore, the magnetic rod is coaxially arranged with the filter element.

[0014] Furthermore, the sealing tube is made of stainless steel.

[0015] According to another aspect of the utility model, a spray drying device is provided, comprising: a concentrated milk tank; a high-pressure pump, wherein the inlet of the high-pressure pump is connected to the outlet of the concentrated milk tank; a filter, arranged between the outlet of the concentrated milk tank and the inlet of the high-pressure pump, wherein the outlet of the concentrated milk tank is connected to the filter inlet of the filter, and the inlet of the high-pressure pump is connected to the filter outlet of the filter, and the filter is the filter provided above.

[0016] The technical solution of the utility model is applied, and the filter includes a filter element and a magnetic rod. The feed liquid enters the filter chamber through the filter inlet, and the metal impurities in the feed liquid are adsorbed by the magnetic rod in the filter chamber, so that the metal impurities are adsorbed on the magnetic rod, so that the metal impurities in the feed liquid are separated, and the feed liquid is also filtered by the filter element in the filter chamber, so that large foreign particles in the feed liquid are separated, and the feed liquid after the large foreign particles and the metal impurities are separated is discharged from the filter chamber through the filter outlet. In addition, since the magnetic rod includes a sealing tube and a plurality of magnetic columns, by arranging the sealing tube in the filter chamber, and arranging the plurality of magnetic columns in the sealing chamber along the axial interval of the sealing tube, it is possible to avoid the magnetic columns and the feed liquid from directly contacting and causing pollution. Therefore, by arranging the magnetic rod in the filter chamber, the filter element can be used to filter the large foreign particles in the feed liquid, and the magnetic rod can be used to adsorb the metal impurities in the feed liquid, so that the filter has the dual functions of filtering large foreign particles and adsorbing metal impurities, and the filter is used to adsorb the metal impurities in the concentrated milk, so that the metal impurities are prevented from entering the high-pressure pump, and the high-pressure pump is prevented from being worn due to the metal impurities, thereby improving the service life of the high-pressure pump and the quality of the milk powder product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 The structure diagram of the filter provided by the embodiment of the utility model is shown;

[0019] Figure 2 A schematic diagram showing the structure of the top cover, filter element and magnetic rod of the filter provided in the embodiment of the utility model is shown;

[0020] Figure 3 A schematic diagram showing the structure of a magnetic rod of a filter provided by an embodiment of the utility model is shown;

[0021] Figure 4 A schematic structural diagram of the magnetic rod of the filter provided by an embodiment of the utility model from another perspective is shown.

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

[0023] 10. filter element; 11. filter chamber; 111. filter front chamber; 112. filter rear chamber; 12. filter inlet; 13. filter outlet; 14. housing; 141. outer shell; 142. top cover; 15. filter element;

[0024] 20. Magnetic rod; 21. Sealing tube; 22. Fixing plate. DETAILED DESCRIPTION

[0025] 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.

[0026] like Figures 1 to 4 As shown, an embodiment of the utility model provides a filter, which includes a filter element 10 and a magnetic rod 20. The filter element 10 has a filter cavity 11 and a filter inlet 12 and a filter outlet 13 connected to the filter cavity 11. The magnetic rod 20 includes a sealing tube 21 and a plurality of magnetic columns. The sealing tube 21 is arranged in the filter cavity 11. The sealing tube 21 has a sealed cavity, and the plurality of magnetic columns are arranged in the sealed cavity at intervals along the axial direction of the sealing tube 21.

[0027] By using the filter provided in this embodiment, the feed liquid enters the filter chamber 11 through the filter inlet 12, and the metal impurities in the feed liquid are adsorbed by the magnetic rod 20 in the filter chamber 11, so that the metal impurities are adsorbed on the magnetic rod 20, so that the metal impurities in the feed liquid are separated, and the feed liquid is also filtered by the filter element 10 in the filter chamber 11, so that large particles of foreign matter in the feed liquid are separated, and the feed liquid after the large particles of foreign matter and metal impurities are separated is discharged from the filter chamber 11 through the filter outlet 13. In addition, since the magnetic rod 20 includes a sealing tube 21 and a plurality of magnetic columns, by setting the sealing tube 21 in the filter chamber 11, and setting the plurality of magnetic columns in the sealing chamber along the axial direction of the sealing tube 21, it is possible to avoid direct contact between the magnetic columns and the feed liquid to cause contamination. Therefore, by arranging the magnetic rod 20 in the filter chamber 11, the filter element 10 can be used to filter out large particles of foreign matter in the feed liquid, and the magnetic rod 20 can be used to adsorb metal impurities in the feed liquid, so that the filter has the dual functions of filtering large particles of foreign matter and adsorbing metal impurities. The filter is used to adsorb metal impurities in concentrated milk, thereby preventing metal impurities from entering the high-pressure pump and preventing the high-pressure pump from being worn due to metal impurities, thereby improving the service life of the high-pressure pump and the quality of milk powder products.

[0028] like Figure 1As shown, the filter element 10 includes a shell 14 and a filter element 15, a filter inlet 12 and a filter outlet 13 are arranged on the shell 14, the filter element 15 is arranged in the shell 14, the filter chamber 11 includes a filter front chamber 111 arranged inside the filter element 15 and a filter rear chamber 112 arranged between the filter element 15 and the shell 14, the filter inlet 12 is connected to the filter front chamber 111, the filter outlet 13 is connected to the filter rear chamber 112, the filter front chamber 111 and the filter rear chamber 112 are connected through the filter hole of the filter element 15, and the sealing tube 21 is arranged in the filter front chamber 111. The slurry enters the pre-filter chamber 111 through the filter inlet 12, and the metal impurities in the slurry are adsorbed by the magnetic rod 20 in the pre-filter chamber 111, so that the metal impurities are adsorbed on the magnetic rod 20, so that the metal impurities in the slurry are separated. The slurry after the metal impurities are separated enters the post-filter chamber 112 through the filter holes of the filter element 15, and in this process is intercepted by the size limitation of the filter holes, and large particles of foreign matter in the slurry cannot pass through the filter holes. The slurry after the large particles of foreign matter and metal impurities are separated enters the post-filter chamber 112 and is discharged through the filter outlet 13.

[0029] like Figure 3 and Figure 4 As shown, the magnetic bar 20 also includes a fixing plate 22 disposed at the upper end of the sealing tube 21, the upper end of the filter element 15 is connected to the housing 14, and the fixing plate 22 is sandwiched between the upper end of the filter element 15 and the housing 14. By arranging the fixing plate 22 at the upper end of the sealing tube 21 and sandwiching the fixing plate 22 between the upper end of the filter element 15 and the housing 14, it is convenient to arrange the sealing tube 21 in the pre-filter chamber 111 and fix the magnetic bar 20.

[0030] like Figure 1 As shown, the filter inlet 12 is arranged at the lower end of the housing 14, the filter element 15 is a cylindrical structure, the filter hole penetrates the side wall of the filter element 15, the lower end of the filter element 15 abuts against the lower end of the housing 14, the lower end opening of the filter element 15 is connected with the filter inlet 12, and the upper end of the filter element 15 abuts against the housing 14 to close the upper end opening of the filter element 15. The size of the filter element 15 in the up and down direction fully utilizes the up and down space in the housing 14, improves the contact area between the filter element 15 and the feed liquid, and improves the filtering effect and filtering efficiency of the feed liquid.

[0031] In this embodiment, the distance between the lower end of the sealing tube 21 and the lower end of the filter element 15 is between 4 cm and 6 cm. The size of the sealing tube 21 in the vertical direction fully utilizes the upper and lower spaces in the housing 14, increases the contact area between the magnetic bar 20 and the liquid, and increases the adsorption effect and efficiency of metal impurities in the liquid, reduces the interference of the lower end of the sealing tube 21 on the liquid flow rate at the upper end opening of the filter element 15, and improves the use efficiency of the filter.

[0032] like Figure 1As shown, the filter outlet 13 is arranged on the side wall of the shell 14 and is located in the upper section of the shell 14, increasing the distance between the filter outlet 13 and the filter inlet 12 in the up and down directions, thereby improving the adsorption effect of the magnetic rod 20 on metal impurities and the filtering effect of the filter element 10 on large particles of foreign matter in the feed liquid.

[0033] It should be noted that the upper section of the shell 14 refers to the portion of the shell 14 located above the middle portion thereof.

[0034] like Figure 1 As shown, the housing 14 includes a detachably connected outer shell 141 and a top cover 142, the filter hole, the filter inlet 12 and the filter outlet 13 are all arranged on the outer shell 141, the outer wall of the upper end of the filter element 15 has an external thread, the lower surface of the top cover 142 is provided with a mounting hole, the inner wall of the mounting hole is provided with an internal thread matching the external thread, the upper end of the filter element 15 and the top cover 142 are threadedly connected, and the fixing sheet 22 is clamped between the upper end of the filter element 15 and the top cover 142. The detachably connected outer shell 141 and the top cover 142 are adopted to facilitate the cleaning, replacement and maintenance of the filter element 15 and the magnetic bar 20.

[0035] In this embodiment, the ratio of the diameter of the sealing tube 21 to the diameter of the filter element 15 is between 0.35 and 0.45.

[0036] The ratio of the diameter of the sealing tube 21 to the diameter of the filter element 15 may be 0.35, 0.37, 0.39, 0.41, 0.43, 0.45, or any value between 0.35 and 0.45.

[0037] In this embodiment, the magnetic rod 20 is coaxially arranged with the filter element 15 , so that the magnetic field of the magnetic rod 20 is evenly distributed in the circumferential direction of the filter element 15 , thereby improving the adsorption effect of the magnetic rod 20 on metal impurities in the pre-filter cavity 111 .

[0038] In this embodiment, the sealing tube 21 is made of stainless steel, so that the sealing tube 21 is rust-resistant and the service life of the sealing tube 21 is extended.

[0039] In this embodiment, the diameter of the magnetic bar 20 is 25 mm, and the length of the magnetic bar 20 is 350 mm.

[0040] Another embodiment of the utility model provides a spray drying device, which includes a concentrated milk tank, a high-pressure pump and a filter. The inlet of the high-pressure pump is connected to the outlet of the concentrated milk tank, the filter is arranged between the outlet of the concentrated milk tank and the inlet of the high-pressure pump, the outlet of the concentrated milk tank is connected to the filter inlet 12 of the filter, the inlet of the high-pressure pump is connected to the filter outlet 13 of the filter, and the filter is the filter provided above.

[0041] By using the spray drying device provided in this embodiment, the concentrated milk enters the filter chamber 11 through the outlet of the concentrated milk tank and the filter inlet 12, and the metal impurities in the concentrated milk are adsorbed by the magnetic rod 20 in the filter chamber 11, so that the metal impurities are adsorbed on the magnetic rod 20, so that the metal impurities in the concentrated milk are separated, and the concentrated milk is also filtered by the filter element 10 in the filter chamber 11, so that large particles of foreign matter in the concentrated milk are separated, and the concentrated milk after the large particles of foreign matter and metal impurities are separated enters the high-pressure pump through the filter outlet 13 and the inlet of the high-pressure pump. In addition, since the magnetic rod 20 includes a sealing tube 21 and a plurality of magnetic columns, by setting the sealing tube 21 in the filter chamber 11, and setting the plurality of magnetic columns in the sealing chamber along the axial direction of the sealing tube 21, it is possible to avoid direct contact between the magnetic columns and the concentrated milk to cause contamination. Therefore, by arranging the magnetic rod 20 in the filter chamber 11, the filter element 10 can be used to filter large particles of foreign matter in the concentrated milk, and the magnetic rod 20 can be used to adsorb metal impurities in the concentrated milk, so that the filter has the dual functions of filtering large particles of foreign matter and adsorbing metal impurities. The filter is used to adsorb metal impurities in the concentrated milk, thereby preventing metal impurities from entering the high-pressure pump and preventing the high-pressure pump from being worn due to metal impurities, thereby improving the service life of the high-pressure pump and the quality of milk powder products.

[0042] Although installing an iron remover at the finished milk powder product end can also solve the metal impurity problem of the milk powder product, it is costly and inefficient. In addition, at the finished milk powder product end, a large amount of milk powder products pass through the iron remover to intercept metal impurities, which may result in omissions. The interception effect is not as good as the metal impurity interception between the outlet of the concentrated milk tank and the inlet of the high-pressure pump in this embodiment.

[0043] In addition, after the production of the spray drying device is completed, the magnetic bar can be taken out, the metal foreign matter adsorbed by the magnetic bar can be collected and diluted with water, the diluted metal foreign matter can be sent to the laboratory for filtration using filter paper, and then the metal foreign matter can be observed using a magnifying glass, so as to facilitate the analysis and detection of the metal foreign matter.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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 filter, characterized in that: The filters include: A filter element (10) having a filter cavity (11) and a filter inlet (12) and a filter outlet (13) connected to the filter cavity (11); The magnetic rod (20) comprises a sealing tube (21) and a plurality of magnetic columns. The sealing tube (21) is arranged in the filter cavity (11). The sealing tube (21) has a sealing cavity. The plurality of magnetic columns are arranged in the sealing cavity at intervals along the axial direction of the sealing tube (21).

2. The filter according to claim 1, characterized in that The filter element (10) comprises: A housing (14), wherein the filter inlet (12) and the filter outlet (13) are arranged on the housing (14); A filter element (15) is arranged in the housing (14); the filter cavity (11) comprises a front filter cavity (111) arranged inside the filter element (15) and a rear filter cavity (112) arranged between the filter element (15) and the housing (14); the filter inlet (12) is connected to the front filter cavity (111); the filter outlet (13) is connected to the rear filter cavity (112); the front filter cavity (111) and the rear filter cavity (112) are connected via a filter hole of the filter element (15); and the sealing tube (21) is arranged in the front filter cavity (111).

3. The filter according to claim 2, characterized in that The magnetic bar (20) further comprises a fixing plate (22) arranged at the upper end of the sealing tube (21), the upper end of the filter element (15) is connected to the housing (14), and the fixing plate (22) is sandwiched between the upper end of the filter element (15) and the housing (14).

4. The filter according to claim 3, characterized in that The filter inlet (12) is arranged at the lower end of the housing (14); the filter element (15) is a cylindrical structure; the filter hole penetrates the side wall of the filter element (15); the lower end of the filter element (15) abuts against the lower end of the housing (14); the lower end opening of the filter element (15) is connected to the filter inlet (12); the upper end of the filter element (15) abuts against the housing (14) to close the upper end opening of the filter element (15).

5. The filter according to claim 4, characterized in that The distance between the lower end of the sealing tube (21) and the lower end of the filter element (15) is between 4 cm and 6 cm; and / or, The filter outlet (13) is arranged on the side wall of the shell (14) and is located in the upper section of the shell (14).

6. The filter according to claim 3, characterized in that The housing (14) comprises a detachably connected outer shell (141) and a top cover (142); the filter hole, the filter inlet (12) and the filter outlet (13) are all arranged on the outer shell (141); the outer wall of the upper end of the filter element (15) has an external thread; the lower surface of the top cover (142) is provided with a mounting hole; the inner wall of the mounting hole is provided with an internal thread matching the external thread; the upper end of the filter element (15) and the top cover (142) are threadedly connected; and the fixing plate (22) is clamped between the upper end of the filter element (15) and the top cover (142).

7. The filter according to any one of claims 2 to 6, characterized in that The ratio of the diameter of the sealing tube (21) to the diameter of the filter element (15) is between 0.35 and 0.

45.

8. The filter according to claim 2, characterized in that The magnetic rod (20) is coaxially arranged with the filter element (15).

9. The filter according to any one of claims 1 to 6, characterized in that The sealing tube (21) is made of stainless steel.

10. A spray drying device, characterized in that: The spray drying device comprises: thick milk tank; a high-pressure pump, wherein the inlet of the high-pressure pump is connected to the outlet of the concentrated milk tank; A filter is arranged between the outlet of the concentrated milk tank and the inlet of the high-pressure pump, the outlet of the concentrated milk tank is connected to the filter inlet (12) of the filter, the inlet of the high-pressure pump is connected to the filter outlet (13) of the filter, and the filter is the filter according to any one of claims 1 to 9.

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