Negative-pressure sauce filtering structure and filtering device

Abstract

The utility model discloses a sauce negative pressure filtering structure and a filtering device, and relates to the technical field of sauce filtering, the sauce negative pressure filtering structure comprises a top cover, a collecting tank and a filtering assembly arranged between the top cover and the collecting tank; the filtering assembly comprises a first-stage filtering structure, a second-stage filtering structure and a third-stage filtering structure which are sequentially arranged from top to bottom, the top cover is detachably connected with the top of the first-stage filtering structure, and the collecting tank is detachably connected with the bottom of the third-stage filtering structure; each of the first-stage filtering structure, the second-stage filtering structure and the third-stage filtering structure comprises a mounting shell and a filtering piece arranged in the mounting shell, and the filtering pieces are detachably connected with the mounting shells; a pair of first connecting blocks are fixedly arranged at the top of the mounting shell, and a pair of second connecting blocks matched with the first connecting blocks are fixedly arranged at the bottom of the mounting shell, so that the problem that after an existing sauce negative pressure filtering device is used, residual sauce is easily attached to a filtering structure and is difficult to clean effectively, and the next use of the device is influenced is solved.

Description

Technical Field

[0001] This utility model relates to the field of sauce filtration technology, specifically to a negative pressure filtration structure and filtration device for sauces. Background Technology

[0002] In the sauce production and processing industry, to ensure the quality of sauces, filtration is often necessary to remove impurities. Negative pressure filtration devices are widely used in sauce filtration due to their ability to improve filtration efficiency. Their working principle typically utilizes a negative pressure environment, forcing the sauce through a filter structure under pressure difference, thereby achieving solid-liquid separation or removing impurities.

[0003] However, existing negative pressure filtration devices for sauces have significant drawbacks. After use, residual sauce easily adheres to the filter structure. Due to the inherent stickiness and adhesion of sauces, ordinary cleaning methods are insufficient to completely remove them. Current common cleaning methods, such as simple water rinsing, cannot penetrate the fine pores and complex structure of the filter, resulting in substantial sauce residue. Furthermore, the often complex design of the filter structure makes some parts difficult to access, further increasing the difficulty of cleaning.

[0004] These residual sauces can have several adverse effects on the next use of the equipment. Firstly, the residual sauce may dry out, spoil, and breed bacteria, thus contaminating the sauces filtered later and severely impacting product quality. Secondly, the accumulation of residual sauce can clog the pores of the filter structure, reducing filtration efficiency and even causing the filter to malfunction, increasing equipment maintenance costs and downtime, and affecting production schedules. Therefore, effectively solving the problem of residual sauce adhering to the filter structure and being difficult to clean after use in existing negative pressure sauce filtration devices has become a crucial issue that urgently needs to be addressed in this field. Utility Model Content

[0005] Based on this, and in response to the above problems, this utility model proposes a negative pressure filtration structure and filtration device for sauces, which solves the problem that after use, residual sauce easily adheres to the filtration structure and is difficult to clean effectively, thus affecting the next use of the device.

[0006] The technical solution of this utility model is:

[0007] A negative pressure filtration structure for sauces includes a top cover, a collection tank, and a filter assembly disposed between the top cover and the collection tank. The filter assembly is used for graded filtration of sauces.

[0008] The filter assembly includes a primary filter structure, a secondary filter structure, and a tertiary filter structure arranged sequentially from top to bottom. The top cover is detachably connected to the top of the primary filter structure, and the collection tank is detachably connected to the bottom of the tertiary filter structure. Each of the primary, secondary, and tertiary filter structures includes a mounting housing and a filter element disposed within the mounting housing. The filter element is detachably connected to the mounting housing.

[0009] A pair of first connecting blocks are fixedly provided on the top of the mounting housing, and a pair of second connecting blocks are fixedly provided on the bottom of the mounting housing to cooperate with the pair of first connecting blocks. In the first-stage filtration structure, the pair of second connecting blocks at the bottom of the mounting housing are detachably connected to the pair of first connecting blocks at the top of the mounting housing in the second-stage filtration structure by bolts. In the second-stage filtration structure, the pair of second connecting blocks at the bottom of the mounting housing are detachably connected to the pair of first connecting blocks at the top of the mounting housing in the third-stage filtration structure by bolts.

[0010] Preferably, a pair of cover connecting blocks are fixedly provided at the bottom of the top cover, and the pair of cover connecting blocks are respectively provided on both sides of the top cover. The pair of cover connecting blocks are detachably connected to a pair of first connecting blocks on the top of the housing in the primary filter structure by bolts.

[0011] Preferably, a pair of tank connecting blocks are fixedly provided on the top of the collection tank, and the pair of tank connecting blocks are respectively located on both sides of the collection tank. The pair of tank connecting blocks are detachably connected to a pair of second connecting blocks at the bottom of the housing in the three-stage filtration structure by bolts.

[0012] Preferably, the bottom of the mounting housing is provided with an insertion ring, which is fixedly connected to the bottom of the mounting housing. The top of the mounting housing is provided with a first sealing ring, one end of which is embedded in the top of the mounting housing and detachably connected to the top of the mounting housing. Handles are fixedly provided on both sides of the mounting housing.

[0013] Preferably, the mounting housing is provided with a limiting step that cooperates with the filter element, the filter element is mounted on the limiting step, and is detachably connected to the limiting step by bolts.

[0014] Preferably, a second sealing ring is provided on the side of the limiting step that contacts the filter element. One end of the second sealing ring is embedded in the limiting step and is detachably connected to the limiting step, while the other end of the second sealing ring contacts and seals the filter element.

[0015] Preferably, the filter element includes a pair of limiting rings and a filter plate, the filter plate being disposed between the pair of limiting rings and detachably connected to the pair of limiting rings by bolts, and the filter plate having a plurality of filter holes penetrating the filter plate.

[0016] Preferably, the pore size of the filter holes in the primary filter structure is twice that of the filter holes in the secondary filter element, and the pore size of the filter holes in the secondary filter structure is twice that of the filter holes in the tertiary filter element.

[0017] Preferably, the top cover is fixedly provided with a feed inlet and an air inlet, one end of which penetrates the top of the top cover. A buffer is fixedly provided inside the feed inlet. An air outlet is provided on one side of the collection tank, one end of which penetrates the side of the collection tank. A discharge outlet is provided at the bottom of the collection tank, one end of which penetrates the bottom of the collection tank.

[0018] A sauce negative pressure filtration device includes the sauce negative pressure filtration structure described above, and also includes a mounting frame. A collection tank is mounted on the mounting frame, and the bottom of the collection tank is detachably connected to the mounting frame by bolts.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention features a negative pressure filtration structure consisting of a top cover, a collection tank, and a filter assembly positioned between the top cover and the collection tank. The filter assembly is further structured as a three-stage filtration system arranged sequentially from top to bottom. The top cover is detachably connected to the top of the first-stage filtration system, and the collection tank is detachably connected to the bottom of the third-stage filtration system, thus enabling the overall structure to be disassembled. Furthermore, the mounting housings of the first, second, and third-stage filtration systems are connected in a single bolt configuration, allowing for the disassembly of the filter assembly. Additionally, the first, second, and third-stage filtration systems are configured as mounting housings and filter elements, with the filter elements detachably connected to the mounting housings, enabling the disassembly of the filter elements. Compared to traditional integrated filter tanks, this invention employs a split design, facilitating the disassembly of the entire negative pressure filtration structure. This allows for easy cleaning of individual components, solving the problem of residual sauce adhering to the filter structure after use in current sauce negative pressure filtration devices, which is difficult to clean effectively and affects subsequent use. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a partial structural schematic diagram of a sauce negative pressure filtration device described in an embodiment of this utility model;

[0023] Figure 2This is a schematic diagram of the top cover structure described in the embodiment of this utility model. Figure 1 ;

[0024] Figure 3 This is a schematic diagram of the top cover structure described in the embodiment of this utility model. Figure 2 ;

[0025] Figure 4 This is a partial structural diagram of the filtering component described in the embodiments of this utility model. Figure 1 ;

[0026] Figure 5 This is a partial structural diagram of the filtering component described in the embodiments of this utility model. Figure 2 ;

[0027] Figure 6 This is a schematic diagram of the structure of the mounting housing described in the embodiment of this utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the filter element described in the embodiments of this utility model;

[0029] Figure 8 This is a schematic diagram of the structure of the collection tank described in the embodiment of this utility model. Figure 1 ;

[0030] Figure 9 This is a schematic diagram of the structure of the collection tank described in the embodiment of this utility model. Figure 2 ;

[0031] Figure 10 This is a schematic diagram of a negative pressure filtration structure for sauces as described in an embodiment of this utility model;

[0032] Explanation of reference numerals in the attached figures:

[0033] 10-Mounting frame, 11-Top cover, 12-Collection tank, 13-Filter assembly, 14-First-stage filtration structure, 15-Second-stage filtration structure, 16-Tertiary-stage filtration structure, 17-Mounting housing, 18-Filter element, 19-First connecting block, 20-Second connecting block, 21-Cover connecting block, 22-Tank connecting block, 23-Insertion ring, 24-First sealing ring, 25-Handle, 26-Limiting step, 27-Second sealing ring, 28-Restriction ring 29-Filter plate, 30-Filter hole, 31-Feed inlet, 32-Air inlet, 33-Buffer, 34-Air outlet, 35-Discharge outlet, 36-Feed conveying pipe, 37-Feed valve, 38-Discharge conveying pipe, 39-Discharge valve, 40-Air outlet pipe, 41-Gas check valve, 42-Pressure gauge, 43-Air outlet valve, 44-Vacuum pump, 45-Air inlet pipe, 46-Air inlet valve, 47-Connecting frame, 48-Arc-shaped buffer plate. Detailed Implementation

[0034] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0035] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0038] In this embodiment of the invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0040] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0041] Example:

[0042] like Figures 1 to 10 As shown, this embodiment discloses a sauce negative pressure filtration structure, including a top cover 11, a collection tank 12, and a filter assembly 13 disposed between the top cover 11 and the collection tank 12. The filter assembly 13 is used for graded filtration of sauce.

[0043] The filter assembly 13 includes a primary filter structure 14, a secondary filter structure 15, and a tertiary filter structure 16 arranged sequentially from top to bottom. The top cover 11 is detachably connected to the top of the primary filter structure 14, and the collection tank 12 is detachably connected to the bottom of the tertiary filter structure 16. The primary filter structure 14, the secondary filter structure 15, and the tertiary filter structure 16 all include a mounting housing 17 and a filter element 18 disposed in the mounting housing 17. The filter element 18 is detachably connected to the mounting housing 17.

[0044] A pair of first connecting blocks 19 are fixedly provided on the top of the mounting housing 17, and a pair of second connecting blocks 20 that cooperate with the pair of first connecting blocks 19 are fixedly provided on the bottom. The pair of second connecting blocks 20 at the bottom of the mounting housing 17 in the first-stage filtration structure 14 are detachably connected to the pair of first connecting blocks 19 at the top of the mounting housing 17 in the second-stage filtration structure 15 by bolts. The pair of second connecting blocks 20 at the bottom of the mounting housing 17 in the second-stage filtration structure 15 are detachably connected to the pair of first connecting blocks 19 at the top of the mounting housing 17 in the third-stage filtration structure 16 by bolts.

[0045] This invention features a negative pressure filtration structure consisting of a top cover 11, a collection tank 12, and a filter assembly 13 positioned between the top cover 11 and the collection tank 12. The filter assembly 13 is configured as a primary filtration structure 14, a secondary filtration structure 15, and a tertiary filtration structure 16 arranged sequentially from top to bottom. The top cover 11 is detachably connected to the top of the primary filtration structure 14, and the collection tank 12 is detachably connected to the bottom of the tertiary filtration structure 16, thus achieving a detachable overall structure. Furthermore, the filter assembly 13 is detachable by sequentially bolting the mounting housings 17 within the primary, secondary, and tertiary filtration structures 14, 15, and 16. Finally, the primary, secondary, and tertiary filtration structures 14, 15, and 16 are configured as a mounting housing 17 and a filter element 18, with the filter element 18 detachably connected to the mounting housing 17, thus achieving a detachable filter element 18. Compared to the traditional one-piece filter tank, this utility model adopts a split design, which facilitates the disassembly of the entire negative pressure filter structure. This makes it easier to disassemble each component for cleaning, solving the problem that after use, residual sauce easily adheres to the filter structure and is difficult to clean effectively, thus affecting the next use of the device.

[0046] To further facilitate the installation and disassembly of the top cover 11, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that a pair of cover connecting blocks 21 are fixedly provided at the bottom of the top cover 11. The pair of cover connecting blocks 21 are respectively provided on both sides of the top cover 11. The pair of cover connecting blocks 21 are respectively detachably connected to a pair of first connecting blocks 19 on the top of the housing 17 in the primary filter structure 14 by bolts.

[0047] By setting a pair of cover connecting blocks 21 at the bottom of the top cover 11, and detachably connecting the pair of cover connecting blocks 21 to a pair of first connecting blocks 19 on the top of the housing 17 in the primary filter structure 14 with bolts, the top cover 11 can be easily disassembled and assembled. The bolt connection can be completed quickly.

[0048] To further facilitate the installation and disassembly of the collection tank 12, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that a pair of tank connecting blocks 22 are fixedly provided on the top of the collection tank 12. The pair of tank connecting blocks 22 are respectively arranged on both sides of the collection tank 12. The pair of tank connecting blocks 22 are respectively detachably connected to a pair of second connecting blocks 20 at the bottom of the housing 17 in the three-stage filtration structure 16 by bolts.

[0049] By setting a pair of tank connecting blocks 22 on the top of the collection tank 12, and detachably connecting the pair of tank connecting blocks 22 to a pair of second connecting blocks 20 at the bottom of the housing 17 in the three-stage filtration structure 16 with bolts, the installation and disassembly of the collection tank 12 can be facilitated. The bolt connection can be completed quickly.

[0050] To improve the sealing between the various filter structures, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that the bottom of the mounting housing 17 is provided with an insertion ring 23, which is fixedly connected to the bottom of the mounting housing 17. The top of the mounting housing 17 is provided with a first sealing ring 24, one end of which is embedded in the top of the mounting housing 17 and is detachably connected to the top of the mounting housing 17. Handles 25 are fixedly provided on both sides of the mounting housing 17.

[0051] During installation, the insertion ring 23 at the bottom of the mounting housing 17 in the primary filter structure 14 can be inserted into the top of the mounting housing 17 in the secondary filter structure 15. Simultaneously, the bottom of the mounting housing 17 in the primary filter structure 14 contacts the first sealing ring 24 at the top of the mounting housing 17 in the secondary filter structure 15 to form a seal, thus improving the sealing performance of the primary and secondary filter structures 14 and 15. The secondary filter structure 15 and the tertiary filter structure 16 are installed in the same way to improve their sealing performance. The handle 25 facilitates disassembly of the mounting housing 17 by the operator.

[0052] The number of first sealing rings 24 can be set according to actual needs.

[0053] As a further preferred embodiment, the bottom of the top cover 11 is provided with the same insertion ring 23. When installing the top cover 11, the insertion ring 23 at the bottom of the top cover 11 is inserted into the top of the mounting housing 17 in the primary filter structure 14, and the bottom of the top cover 11 contacts the first sealing ring 24 at the top of the mounting housing 17 in the primary filter structure 14 to form a seal, thereby improving the sealing performance of the installation between the top cover 11 and the primary filter structure 14.

[0054] As a further preferred embodiment, the top of the collection tank 12 is provided with the same first sealing ring 24, which is embedded in the top of the collection tank 12 and detachably connected to the collection tank 12. When installing the three-stage filter structure 16 to the collection tank 12, the insertion ring 23 at the bottom of the mounting housing 17 in the three-stage filter structure 16 is inserted into the top of the collection tank 12, and at the same time, the bottom of the mounting housing 17 in the three-stage filter structure 16 contacts the first sealing ring 24 at the top of the collection tank 12 to form a seal, thereby improving the sealing performance of the installation between the three-stage filter structure 16 and the collection tank 12.

[0055] To facilitate the assembly and disassembly of the filter element 18, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that the mounting housing 17 is provided with a limiting step 26 that cooperates with the filter element 18. The filter element 18 is set on the limiting step 26 and is detachably connected to the limiting step 26 by bolts.

[0056] The limiting step 26 is provided with a second sealing ring 27 on the side that contacts the filter element 18. One end of the second sealing ring 27 is embedded in the limiting step 26 and is detachably connected to the limiting step 26. The other end of the second sealing ring 27 contacts and seals the filter element 18.

[0057] The limiting step 26 facilitates the positioning of the filter element 18. The bolted connection facilitates the assembly and disassembly of the filter element 18. The second sealing ring 27 improves the seal between the filter element 18 and the limiting step 26, thereby reducing sauce leakage from the connection point between the filter element 18 and the limiting step 26.

[0058] To facilitate graded filtration, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that the filter element 18 includes a pair of limiting rings 28 and a filter sheet 29. The filter sheet 29 is disposed between the pair of limiting rings 28 and is detachably connected to the pair of limiting rings 28 by bolts. The filter sheet 29 is provided with a plurality of filter holes 30, which penetrate the filter sheet 29.

[0059] In the primary filter structure 14, the pore diameter of the filter hole 30 is twice that of the filter hole 30 in the secondary filter element, and in the secondary filter structure 15, the pore diameter of the filter hole 30 is twice that of the filter hole 30 in the tertiary filter element.

[0060] By setting the pore size of the filter holes 30 in the primary filter structure 14 to twice that of the filter holes 30 in the secondary filter element, and the pore size of the filter holes 30 in the secondary filter structure 15 to twice that of the filter holes 30 in the tertiary filter element, tiered filtration can be achieved. The pore size of the filter holes 30 can be adjusted according to the type of sauce being filtered.

[0061] To facilitate feeding, discharging, and creating a relatively negative pressure environment, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that the top cover 11 is fixedly provided with a feed inlet 31 and an air inlet 32, one end of the feed inlet 31 and the air inlet 32 ​​penetrates through the top of the top cover 11, a buffer 33 is fixedly provided inside the feed inlet 31, an air outlet 34 is provided on one side of the collection tank 12, one end of the air outlet 34 penetrates through one side of the collection tank 12, and a discharge outlet 35 is provided at the bottom of the collection tank 12, one end of the discharge outlet 35 penetrates through the bottom of the collection tank 12.

[0062] The buffer component 33 includes a connecting frame 47 and an arc-shaped buffer plate 48 disposed at the bottom of the connecting frame 47. The arc-shaped buffer plate 48 is fixedly connected to one end of the connecting frame 47, and the other end of the connecting frame 47 is fixedly connected to the inner wall of the feed port 31.

[0063] The feed inlet 31 can be connected to an external feed conveying pipe 36, which is equipped with a feed valve 37. The input of sauce can be controlled by setting the feed valve 37.

[0064] The discharge port 35 can be connected to an external discharge conveying pipe 38, and the discharge conveying pipe 38 is equipped with a discharge valve 39. The discharge valve 39 facilitates the output of the filtered sauce.

[0065] The air outlet 34 can be connected to an external air outlet pipe 40. The air outlet pipe 40 is sequentially equipped with a gas one-way valve 41, a pressure gauge 42, an air outlet valve 43, and a vacuum pump 44. The vacuum pump 44 facilitates the extraction of air from the top cover 11, the primary filter structure 14, the secondary filter structure 15, the tertiary filter structure 16, and the collection tank 12, thereby creating a relative vacuum environment and a relative negative pressure environment, which facilitates faster filtration of the sauce. The gas one-way valve 41 helps prevent the sauce from being extracted. The air outlet valve 43 helps control the extraction of air. The pressure gauge 42 facilitates pressure monitoring.

[0066] The air inlet 32 ​​can be connected to an external air inlet pipe 45, which is equipped with an air inlet valve 46. The air inlet valve 46 facilitates control of the air intake. The air inlet 32 ​​allows air to be injected into the device after filtration to restore pressure, thus facilitating the disassembly of the entire device.

[0067] A sauce negative pressure filtration device includes the sauce negative pressure filtration structure described above, and also includes a mounting frame 10. A collection tank 12 is mounted on the mounting frame 10, and the bottom of the collection tank 12 is detachably connected to the mounting frame 10 by bolts.

[0068] The mounting frame 10 facilitates the installation of the aforementioned negative pressure filter structure.

[0069] Working principle of this utility model:

[0070] This invention features a negative pressure filtration structure consisting of a top cover 11, a collection tank 12, and a filter assembly 13 positioned between the top cover 11 and the collection tank 12. The filter assembly 13 is further configured as a primary filtration structure 14, a secondary filtration structure 15, and a tertiary filtration structure 16 arranged sequentially from top to bottom. The top cover 11 is detachably connected to the top of the primary filtration structure 14, and the collection tank 12 is detachably connected to the bottom of the tertiary filtration structure 16, thus achieving a detachable overall structure. The mounting housings 17 of the primary, secondary, and tertiary filtration structures 14, 15, and 16 are sequentially connected by bolts, enabling the detachable filter assembly 13. Furthermore, the primary, secondary, and tertiary filtration structures 14, 15, and 16 are configured as a mounting housing 17 and a filter element 18, with the filter element 18 detachably connected to the mounting housing 17, thus achieving the detachable filter element 18. Compared to traditional integrated filter tanks, this invention employs a split design, facilitating the disassembly of the entire negative pressure filtration structure and allowing for easy cleaning of each component.

[0071] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0072] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A negative pressure filtration structure for sauces, characterized in that, It includes a top cover (11), a collection tank (12) and a filter assembly (13) disposed between the top cover (11) and the collection tank (12), the filter assembly (13) being used for graded filtering of sauces; The filter assembly (13) includes a primary filter structure (14), a secondary filter structure (15) and a tertiary filter structure (16) arranged sequentially from top to bottom. The top cover (11) is detachably connected to the top of the primary filter structure (14), and the collection tank (12) is detachably connected to the bottom of the tertiary filter structure (16). The primary filter structure (14), the secondary filter structure (15) and the tertiary filter structure (16) each include a mounting housing (17) and a filter element (18) disposed in the mounting housing (17). The filter element (18) is detachably connected to the mounting housing (17). The top of the mounting housing (17) is fixedly provided with a pair of first connecting blocks (19), and the bottom is fixedly provided with a pair of second connecting blocks (20) that cooperate with the pair of first connecting blocks (19). The pair of second connecting blocks (20) at the bottom of the mounting housing (17) in the first-stage filtration structure (14) are detachably connected to the pair of first connecting blocks (19) at the top of the mounting housing (17) in the second-stage filtration structure (15) by bolts. The pair of second connecting blocks (20) at the bottom of the mounting housing (17) in the second-stage filtration structure (15) are detachably connected to the pair of first connecting blocks (19) at the top of the mounting housing (17) in the third-stage filtration structure (16) by bolts.

2. The negative pressure filtration structure for sauces according to claim 1, characterized in that, A pair of cover connecting blocks (21) are fixedly provided at the bottom of the top cover (11). The pair of cover connecting blocks (21) are respectively set on both sides of the top cover (11). The pair of cover connecting blocks (21) are respectively detachably connected to a pair of first connecting blocks (19) on the top of the housing (17) in the primary filter structure (14) by bolts.

3. The negative pressure filtration structure for sauces according to claim 2, characterized in that, A pair of tank connecting blocks (22) are fixedly provided on the top of the collection tank (12). The pair of tank connecting blocks (22) are respectively set on both sides of the collection tank (12). The pair of tank connecting blocks (22) are respectively detachably connected to a pair of second connecting blocks (20) at the bottom of the housing (17) in the three-stage filtration structure (16) by bolts.

4. The negative pressure filtration structure for sauces according to claim 3, characterized in that, The bottom of the mounting housing (17) is provided with an insertion ring (23), which is fixedly connected to the bottom of the mounting housing (17). The top of the mounting housing (17) is provided with a first sealing ring (24), one end of which is embedded in the top of the mounting housing (17) and is detachably connected to the top of the mounting housing (17). Handles (25) are fixedly provided on both sides of the mounting housing (17).

5. The negative pressure filtration structure for sauces according to claim 4, characterized in that, The mounting housing (17) is provided with a limiting step (26) that cooperates with the filter element (18). The filter element (18) is set on the limiting step (26) and is detachably connected to the limiting step (26) by bolts.

6. The negative pressure filtration structure for sauces according to claim 5, characterized in that, A second sealing ring (27) is provided on the side of the limiting step (26) that contacts the filter element (18). One end of the second sealing ring (27) is embedded in the limiting step (26) and is detachably connected to the limiting step (26). The other end of the second sealing ring (27) contacts and seals the filter element (18).

7. The negative pressure filtration structure for sauces according to claim 6, characterized in that, The filter element (18) includes a pair of limiting rings (28) and a filter plate (29). The filter plate (29) is disposed between the pair of limiting rings (28) and is detachably connected to the pair of limiting rings (28) by bolts. The filter plate (29) is provided with a plurality of filter holes (30) that penetrate the filter plate (29).

8. The negative pressure filtration structure for sauces according to claim 7, characterized in that, The aperture of the filter hole (30) in the primary filter structure (14) is twice the aperture of the filter hole (30) in the secondary filter element, and the aperture of the filter hole (30) in the secondary filter structure (15) is twice the aperture of the filter hole (30) in the tertiary filter element.

9. The negative pressure filtration structure for sauces according to claim 8, characterized in that, The top cover (11) is fixedly provided with a feed inlet (31) and an air inlet (32). One end of the feed inlet (31) and the air inlet (32) penetrates the top of the top cover (11). A buffer (33) is fixedly provided inside the feed inlet (31). An air outlet (34) is provided on one side of the collection tank (12). One end of the air outlet (34) penetrates the side of the collection tank (12). An outlet (35) is provided at the bottom of the collection tank (12). One end of the outlet (35) penetrates the bottom of the collection tank (12).

10. A negative pressure filtration device for sauces, characterized in that, The sauce negative pressure filtration structure according to any one of claims 1-9 further includes a mounting frame (10), a collection tank (12) is disposed on the mounting frame (10), and the bottom of the collection tank (12) is detachably connected to the mounting frame (10) by bolts.

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