Fermentation tank cover
By designing an adjustable sealing plug and filter screen for the fermentation tank lid, the problems of frequent venting and inconvenient operation of home fermentation tanks are solved, achieving convenient venting and stable fermentation process, making it suitable for home food fermentation equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XUZHOU SHUANGMI GLASS PROD CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-17
AI Technical Summary
Existing home fermentation tank lids require frequent venting during the initial stage of fermentation when gas production is vigorous, leading to the entry of impurities and inconvenience in operation. Furthermore, elderly users or those with weak hand strength find it difficult to screw on the lids.
A fermenter lid was designed, comprising a cover, a filter screen, and an adjustable sealing plug. It allows for one-button venting by flipping or pressing, and integrates a filter screen to prevent impurities from entering.
It enables convenient gas discharge, maintains the airtightness of the fermenter and the stability of the fermentation process, prevents impurities from entering, and improves operational convenience and fermentation effect.
Smart Images

Figure CN224133026U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of fermentation, and in particular to a fermentation tank lid. Background Technology
[0002] In the field of home food fermentation (such as brewing, kimchi making, and dough fermentation), fermentation containers are one of the core tools. Their core function is to provide the sealed environment required by microorganisms (such as yeast and lactic acid bacteria), while balancing the pressure of gases (such as carbon dioxide) produced during fermentation to prevent excessive internal pressure from causing safety hazards or affecting the fermentation effect.
[0003] Most commercially available home fermentation tanks currently use a threaded screw-on sealing structure for their lids. The tank opening and lid achieve a physical seal through the interlocking of internal and external threads, with rubber or silicone gaskets enhancing airtightness. This type of structure is simple, reliable, and inexpensive, and is widely used in household fermentation tanks made of glass and plastic.
[0004] However, in the early stages of fermentation (such as the main fermentation stage of alcoholic beverages), gas production is intense and gas needs to be released multiple times a day. Since the opening size of the jar is usually large, repeated opening of the lid can easily introduce impurities, destroy the activity of the target bacteria, and even cause spoilage. In addition, elderly users or those with weak hand strength find it difficult to twist the lid, making operation inconvenient. Utility Model Content
[0005] This utility model aims to at least partially solve one of the technical problems in the related art.
[0006] Therefore, one objective of this utility model is to provide a fermentation tank lid that, through an adjustable sealing plug, can ensure the airtightness of the fermentation tank, enable convenient venting operations, and integrate a filtration function during the venting process to effectively prevent external impurities from seeping into the tank and ensure the stability of the fermentation process.
[0007] To achieve the above objectives, the first aspect of this utility model provides a fermenter lid, comprising a lid body, a filter screen, and a sealing plug, wherein the lid body has a through hole in its center, a groove at the bottom of the lid body, and a threaded groove on the inner wall of the groove; the filter screen is detachably disposed within the through hole; and the sealing plug is installed within the through hole and positioned above the filter screen.
[0008] In addition, the fermenter lid proposed in the application may also have the following additional technical features:
[0009] Specifically, the sealing plug includes a flap and a first sealing ring, wherein the flap is rotatable and disposed in the through hole, the arc-shaped sidewall of the flap is provided with a groove, the first sealing ring is sleeved in the groove, and the first sealing ring protrudes from the arc-shaped sidewall of the flap.
[0010] Specifically, the sealing plug includes a valve body, a housing, and a spring core. The valve body is installed inside the through hole. The housing is threadedly connected to the valve body, and a spring is provided inside the housing. A pull rod hook is passed through the inside of the spring. One end of the spring core is placed inside the housing and abuts against the spring. The other end of the spring core is threadedly connected to a button cover, and a heart-shaped groove is provided on the lower outer wall of the spring core. One end of the pull rod hook is hooked to the bottom of the housing, and the other end of the pull rod hook is slidably disposed in the heart-shaped groove.
[0011] Specifically, the lower surface of the button cover is provided with a second sealing ring, and the inner wall of the housing is provided with a sealing groove, the second sealing ring cooperating with the sealing groove.
[0012] Specifically, a third sealing ring is provided in the groove.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] (1) With the flip-type or press-type sealing plug structure, one-click venting can be achieved without screwing on the can lid, which significantly improves the convenience of operation compared with the traditional screw opening method.
[0015] (2) The filter screen can effectively intercept impurities and prevent impurities or bacteria from entering the fermenter during the venting operation, thereby ensuring that the fermentation process proceeds smoothly and orderly.
[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:
[0018] Figure 1 This is an exploded structural diagram of the fermenter lid according to an embodiment of the present invention;
[0019] Figure 2 This is a schematic diagram of the bottom structure of a fermenter lid according to an embodiment of the present invention;
[0020] Figure 3 This is a schematic diagram of the sealing plug in the fermenter lid according to one embodiment of the present invention. Figure 1 ;
[0021] Figure 4 This is a schematic diagram of the structure of the third sealing ring in the fermenter lid according to an embodiment of the present invention;
[0022] Figure 5This is a schematic diagram of the sealing plug in the fermenter lid according to one embodiment of the present invention. Figure 2 ;
[0023] Figure 6 This is a schematic diagram of the internal structure of the sealing plug in the fermenter lid according to an embodiment of the present invention.
[0024] As shown in the figure: 1. Cover; 2. Through hole; 3. Filter screen; 5. Groove; 7. Second sealing ring; 8. Sealing groove; 9. Third sealing ring; 10. Slide groove; 11. Guide rod; 41. Flip plate; 42. First sealing ring; 410. Slot; 61. Valve body; 62. Spring core; 63. Housing; 64. Button cover; 65. Pull rod hook; 66. Spring; 620. Heart-shaped groove. Detailed Implementation
[0025] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.
[0026] The fermentation tank lid of this utility model embodiment will be described below with reference to the accompanying drawings.
[0027] The fermentation tank lid provided in this embodiment can be applied to fermentation tanks, mainly for sealing the fermentation tanks and facilitating gas release.
[0028] like Figures 1 to 6 As shown, the fermenter lid of this utility model embodiment may include a lid body 1, a filter screen 3, and a sealing plug.
[0029] The cover 1 has a through hole 2 through its center, and the bottom of the cover 1 has a groove 5 with a threaded groove on the inner wall of the groove 5. The filter screen 3 is detachably installed in the through hole 2. The sealing plug is installed in the through hole 2 and is located above the filter screen 3.
[0030] It should be noted that the width of the groove 5 is equivalent to the thickness of the fermentation tank opening, and the fermentation tank opening is provided with external threads. The external threads and the threaded groove cooperate with each other to realize the threaded connection between the cover 1 and the fermentation tank.
[0031] Furthermore, such as Figure 4 As shown, a third sealing ring 9 is provided in the groove 5. The third sealing ring 9 can improve the sealing of the connection between the cover 1 and the fermentation tank, which is conducive to better fermentation.
[0032] In the embodiments of this utility model, the filter screen 3 can prevent impurities from entering the interior of the fermentation tank during gas release, ensuring the smooth fermentation process. The filter screen 3 is also designed to be detachable for easy replacement. The sealing plug facilitates gas release from the fermentation tank, ensuring pressure balance inside the fermentation tank, thus eliminating the need for repeated opening of the lid and making it more convenient to use.
[0033] In one embodiment of this utility model, such as Figure 3 As shown, the sealing plug includes a flap 41 and a first sealing ring 42. The flap 41 is rotatably disposed in the through hole 2. The arc-shaped sidewall of the flap 41 is provided with a groove 410. The first sealing ring 42 is sleeved in the groove 410 and protrudes from the arc-shaped sidewall of the flap 41.
[0034] It should be noted that the cross-section of the flap 41 is circular, and when the flap 41 is placed horizontally in the through hole 2, the upper surface of the flap 41 is flush with the upper surface of the cover 1. At this time, the first sealing ring 42 can fit against the inner wall of the through hole 2 to seal the through hole 2.
[0035] Specifically, when it is necessary to vent the fermenter, push the flap 41 perpendicular to the cover 1, and the through hole 2 will be partially exposed. At this time, the gas inside the fermenter will be discharged through the through hole 2.
[0036] In one embodiment of this utility model, such as Figure 5 and Figure 6 As shown, the sealing plug includes a valve body 61, a housing 63, and a spring core 62. The valve body 61 is installed inside the through hole 2. The housing 63 is threadedly connected to the valve body 61, and a spring 66 is provided inside the housing 63. A pull rod hook 65 passes through the inside of the spring 66. One end of the spring core 62 is placed inside the housing 63 and abuts against the spring 66. The other end of the spring core 62 is threadedly connected to a button cover 64, and a heart-shaped groove 620 is provided on the lower outer wall of the spring core 62. One end of the pull rod hook 65 is hooked to the bottom of the housing 63, and the other end of the pull rod hook 65 is slidably disposed in the heart-shaped groove 620.
[0037] It should be noted that the part of the valve body 61 located in the through hole 2 has a hollow structure, and the valve body 61 is provided with an extension plate. The size of the extension plate is larger than that of the through hole 2, so that the valve body 61 can be suspended inside the through hole 2.
[0038] Furthermore, the bouncing core 62 is slidably connected to the housing 63, and the button cover 64 is matched with the size of the through hole 2. When the button cover 64 is pressed down into the through hole 2, the button cover 64 fits against the inner wall of the through hole 2.
[0039] Furthermore, the lever hook 65 is a long rod structure with strong rigidity, and both ends are bent into hook shape. The two halves of the heart-shaped groove 620 have different groove depths. By utilizing the cooperation between the lever hook 65, the spring 66 and the heart-shaped groove 620, the position of the button cover 64 can be locked.
[0040] Understandably, see Figure 6 A groove 10 is provided on the outer wall of the bouncing core 62, and a guide rod 11 is provided on the housing 63. The guide rod 11 is slidably connected to the groove 10. The guide rod 11 and the groove 10 can guide the movement direction of the bouncing core 62, ensuring that the bouncing core 62 can move up and down.
[0041] Specifically, when the fermenter needs to be sealed, the relevant personnel apply downward force to the button cover 64, causing the spring core 62 to move downward and the upper end of the pull rod hook 65 to hook into the cavity at the upper end of the heart-shaped groove 620. After releasing, the pull rod hook 65 pulls the spring core 62, preventing it from rising, thus sealing the through hole 2 with the button cover 64. When venting is required, the spring core 62 is pressed down again, and the upper end of the pull rod hook 65 disengages from the cavity at the upper end of the heart-shaped groove 620. After releasing, under the action of the spring 66, the spring core 62 rises, and the upper end of the pull rod hook 65 hooks into the lower end of the heart-shaped groove 620. At this time, the button cover 64 is higher than the surface of the cover body 1 and protrudes from the through hole 2, allowing gas to escape through the through hole 2.
[0042] Furthermore, such as Figure 6 As shown, the lower surface of the button cover 64 is provided with a second sealing ring 7, and the inner wall of the housing 63 is provided with a sealing groove 8, and the second sealing ring 7 cooperates with the sealing groove 8.
[0043] It should be noted that when the button cover 64 is placed inside the housing 63, the second sealing ring 7 is inserted into the sealing groove 8, and both the sealing groove 8 and the second sealing ring 7 can be made of rubber, thereby improving the sealing performance between the button cover 64 and the housing 63.
[0044] In summary, the fermenter lid of this utility model embodiment, through an adjustable sealing plug, can ensure the airtightness of the fermenter, enable convenient venting operations, and integrate a filtration function during the venting process to effectively prevent external impurities from seeping into the tank, thus ensuring the stability of the fermentation process.
[0045] In the description of this specification, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
Claims
1. A fermenter lid characterised in that, Includes a cover, a filter, and a sealing plug, among which, The cover has a through hole in the center, and the bottom of the cover has a groove with a threaded groove on the inner wall of the groove. The filter screen is detachably disposed within the through hole; The sealing plug is installed inside the through hole and is located above the filter screen.
2. The fermenter lid of claim 1, wherein, The sealing plug includes a flap and a first sealing ring, wherein, The flap can be flipped and is disposed in the through hole. The arc-shaped side wall of the flap is provided with a groove. The first sealing ring is sleeved in the groove and protrudes from the arc-shaped side wall of the flap.
3. The fermenter lid of claim 1, wherein, The sealing plug includes a valve body, a housing, and a spring-loaded core, wherein, The valve body is installed inside the through hole; The housing is threadedly connected to the valve body, and a spring is provided inside the housing, with a pull rod hook passing through the inside of the spring; One end of the bouncing core is placed inside the housing and abuts against the spring. The other end of the bouncing core is threaded to a button cover, and the lower outer wall of the bouncing core is provided with a heart-shaped groove. One end of the pull rod hook is hooked to the bottom of the housing, and the other end of the pull rod hook is slidably disposed in the heart-shaped groove.
4. A fermenter lid as claimed in claim 3, characterised in that The lower surface of the button cover is provided with a second sealing ring, and the inner wall of the housing is provided with a sealing groove, the second sealing ring cooperating with the sealing groove.
5. The fermentation tank lid according to claim 1, characterized in that, A third sealing ring is provided inside the groove.