Sealing structure, mixer using the same, and working method thereof

By using a combination of extruded and deflected seals and airways in the sealing structure of the agitator, the powder leakage problem caused by poor sealing is solved, and the airtightness is improved and dust pollution is prevented.

CN119353420BActive Publication Date: 2025-05-06CHANGZHOU BAIHELING INTELLIGENT EQUIP CO LTD
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Patent Information

Application Number
CN202411927502.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-25
Publication Date
2025-05-06
Estimated Expiration
2044-12-25

AI Technical Summary

Technical Problem

During the assembly of the sealed end cap and main body of the mixer, the bolts are not rotated in place due to manual negligence, resulting in poor sealing, powder leaking outward, contaminating the surrounding environment.

Method used

A sealing structure is adopted, including a container body, a sealing cover, a barrier seal and a sealing ring. When the sealing cover is closed, the barrier seal is extruded and deformed and abuts against each other, improving the airtightness; if the sealing cover is partially leaked, the guide airway guides the airflow in the container body to blow to the gap between the sealing ring and the barrier seal to prevent powder from spraying outward.

Benefits of technology

It effectively improves the airtightness between the mixer sealing cover and the container body, prevents dust from spraying outward through the leakage point, and protects the surrounding environment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention belongs to the technical field of engineering components, and in particular, relates to a sealing structure, a mixer using the same, and a working method thereof; the present invention provides a sealing structure, comprising: a container body, which is hollow inside; a sealing cover, which covers the container body; a blocking seal, whose upper part is arranged on the bottom wall of the sealing cover; a sealing ring, which is arranged on the upper top wall of the container body and has a spacing between the blocking seal; wherein the sealing cover covers the container body, the blocking seal is squeezed and deformed by the container body, and two adjacent blocking seals abut against each other. The provision of the blocking seal improves the airtightness between the container body and the sealing cover.
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Description

Technical Field

[0001] The invention belongs to the technical field of engineering components, specifically to the technical field of sealing, and in particular to a sealing structure and a mixer using the same and a working method thereof. Background Art

[0002] A mixer is a kind of engineering machinery, which is mainly used for mixing materials. After the materials are mixed in the mixer, the pressure in the mixer increases when the materials undergo chemical reactions. Therefore, for the mixing of such materials, higher requirements are placed on the sealing of the mixer.

[0003] In the related art, the normal use of the mixer is usually ensured by strengthening the air tightness between the mixer main body and the sealing end cover, or by setting a pressure relief valve.

[0004] However, during the assembly of the sealing end cover and the mixer body, due to manual negligence, some bolts may not be rotated into place, causing the powdered material in the mixer to leak out through this point when the internal pressure of the mixer body increases, which not only causes the waste of raw materials, but also pollutes the surrounding working environment when the powder is sprayed outward.

[0005] Therefore, how to solve the problem of poor sealing of the sealing end cover and the powder spraying outward to pollute the surrounding environment is a technical problem that urgently needs to be solved in this field.

[0006] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0007] The disclosed embodiments at least provide a sealing structure, a mixer using the same, and a working method thereof.

[0008] In a first aspect, an embodiment of the present disclosure provides a sealing structure, comprising:

[0009] A container body, the interior of which is hollow;

[0010] A sealing cover, which covers the container body;

[0011] A blocking seal, the upper portion of which is disposed on the bottom wall of the sealing cover;

[0012] A sealing ring, which is arranged on the upper top wall of the container body and has a spacing between it and the blocking sealing member;

[0013] Wherein, the sealing cover is covered on the container body, the blocking seal is squeezed and deformed by the container body, and two adjacent blocking seals abut against each other;

[0014] A plurality of blocking seals are arranged circumferentially around the bottom wall of the sealing cover at equal intervals.

[0015] The upper top wall of the container body is provided with an annular groove, and the inner side wall of the annular groove is provided with a plurality of inclined surfaces at intervals, and one inclined surface corresponds to one blocking seal;

[0016] Wherein, when the sealing cover is closed onto the container body, the blocking seal is suitable for being inserted into the annular groove, and the inclined surface is suitable for guiding the blocking seal to bend and deform;

[0017] A groove is formed on one side wall of the barrier seal, and the groove is matched with the outer wall of the other side of the barrier seal; wherein, when adjacent barrier seals overlap each other, the outer wall of one barrier seal fits with the groove of another barrier seal.

[0018] In an optional embodiment, the length of the barrier seal is greater than the distance between two adjacent barrier seals.

[0019] In an optional embodiment, the length of the blocking seal is greater than the distance between two adjacent inclined surfaces.

[0020] In an optional embodiment, a sphere is disposed at the lower end of the blocking seal, and the diameter of the sphere is greater than the diameter of the blocking seal.

[0021] In an optional embodiment, the guide air channel includes: a receiving groove, which is circumferentially arranged around the sealing cover and is arranged outside the blocking seal;

[0022] An air inlet groove is radially opened along the sealing cover and communicated with the containing groove;

[0023] The air inlet groove is arranged above the barrier seal.

[0024] In a second aspect, the present disclosure also provides a blender, comprising:

[0025] A container body, the interior of which is hollow;

[0026] A sealing cover, which covers the container body;

[0027] A blocking seal, the upper portion of which is disposed on the bottom wall of the sealing cover;

[0028] A sealing ring, which is arranged on the upper top wall of the container body and has a spacing between it and the blocking sealing member;

[0029] A guide air channel is provided in the sealing cover, and the air outlet of the guide air channel faces the gap between the sealing ring and the blocking sealing member;

[0030] Wherein, the sealing cover is covered on the container body, the blocking seal is squeezed and deformed by the container body, and two adjacent blocking seals abut against each other;

[0031] When the sealing cover leaks locally, the airflow in the container body is blown toward the gap between the sealing ring and the blocking seal through the guide air channel to prevent the powder in the container body from being ejected outwards.

[0032] In an optional embodiment, the guide air channel includes: a receiving groove, which is circumferentially arranged around the sealing cover and is arranged outside the blocking seal;

[0033] An air inlet groove is radially opened along the sealing cover and communicated with the containing groove;

[0034] The air inlet groove is arranged above the barrier seal.

[0035] In an optional embodiment, a plurality of said blocking seals are arranged circumferentially around the bottom wall of the sealing cover at equal intervals.

[0036] The upper top wall of the container body is provided with an annular groove, and the inner side wall of the annular groove is provided with a plurality of inclined surfaces at intervals, and one inclined surface corresponds to one blocking seal;

[0037] Wherein, when the sealing cover is closed onto the container body, the blocking seal is suitable for being inserted into the annular groove, and the inclined surface is suitable for guiding the blocking seal to bend and deform.

[0038] In an optional embodiment, the length of the barrier seal is greater than the distance between two adjacent barrier seals.

[0039] The length of the blocking seal is greater than the distance between two adjacent inclined surfaces.

[0040] In an optional embodiment, a driving motor is vertically arranged on the upper part of the sealing cover;

[0041] A stirring paddle is rotatably arranged at the lower part of the sealing cover. The stirring paddle is suitable for being inserted into the container body and is drivingly connected with the driving motor.

[0042] In a third aspect, the present disclosure also provides a working method of a sealing structure, the working method comprising:

[0043] When the sealing cover is closed onto the container body, the blocking seal is squeezed and deformed by the container body, and two adjacent blocking seals abut against each other;

[0044] If the sealing cover leaks locally, the airflow in the container body will be blown to the gap between the sealing ring and the blocking seal through the guide air channel to prevent the powder in the container body from being ejected outwards.

[0045] The beneficial effects of the present invention are as follows: the sealing structure of the present invention, the mixer using the structure and the working method thereof, through the setting of the blocking seals, when the sealing cover is closed on the container body, a plurality of blocking seals are squeezed and deformed, and two adjacent blocking seals abut and overlap each other to improve the airtightness between the sealing cover and the container body; and the setting of the guide airway, when a local leakage occurs in the sealing cover, the airflow in the container body flows radially outward, and the guide airway is suitable for guiding the airflow to blow toward the sealing ring along the axial direction of the container body, thereby preventing dust in the container body from being sprayed outward from the leakage, and preventing dust from polluting the environment around the container body.

[0046] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0047] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0049] Figure 1 A three-dimensional diagram of a sealing structure provided in an embodiment of the present disclosure;

[0050] Figure 2 A three-dimensional diagram of a sealing cover provided in an embodiment of the present disclosure;

[0051] Figure 3 A three-dimensional view of a container body provided for an embodiment of the present disclosure;

[0052] Figure 4 A cutaway perspective view of a container body and a sealing cover provided in an embodiment of the present disclosure;

[0053] Figure 5 A schematic diagram of a state in which the blocking seal provided by an embodiment of the present disclosure is not inserted into the annular groove;

[0054] Figure 6 A schematic diagram of the state of the blocking seal provided in an embodiment of the present disclosure when inserted into the annular groove.

[0055] In the figure:

[0056] 1. Container body; 10. Ring groove; 11. Incline;

[0057] 2. Sealing cover; 20. Air guide channel; 21. Receiving groove; 22. Air inlet groove; 23. Driving motor; 24. Stirring paddle;

[0058] 3. blocking seal; 30. groove; 31. ball;

[0059] 4. Sealing ring. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] In this article, when it is mentioned that the first component is located on the second component, this may mean that the first component may be directly formed on the second component, or the third component may be interposed between the first component and the second component. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components may be exaggerated or reduced.

[0062] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings.

[0063] The research found that the shortcomings of the prior art are: in the related technology, the air tightness between the mixer main body and the sealing end cover is strengthened, or a pressure relief valve is set to ensure that the mixer can be used normally.

[0064] However, during the assembly of the sealing end cover and the mixer body, due to manual negligence, some bolts may not be rotated into place, causing the powdered material in the mixer to leak out through this point when the internal pressure of the mixer body increases, which not only causes the waste of raw materials, but also pollutes the surrounding working environment when the powder is sprayed outward.

[0065] Therefore, how to solve the problem of poor sealing of the sealing end cover and the powder spraying outward to pollute the surrounding environment is a technical problem that urgently needs to be solved in this field.

[0066] The defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present invention in this article for the above problems should be the contributions made by the inventor to the present invention during the disclosure process.

[0067] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0068] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0069] like Figures 1 to 6 As shown, some embodiments provide a sealing structure, including: a container body 1, which is hollow inside; the container body 1 is suitable for carrying materials, and the materials are suitable for mixing and stirring in the container body 1; a sealing cover 2, which covers the container body 1; a blocking seal 3, the upper part of which is arranged on the bottom wall of the sealing cover 2; a sealing ring 4, which is arranged on the upper top wall of the container body 1 and has a spacing with the blocking seal 3; the sealing cover 2 covers the container body 1, and the sealing cover 2 is suitable for squeezing the sealing ring 4 to deform, and the sealing ring 4 is suitable for sealing the gap between the sealing cover 2 and the container body 1. A guide air channel 20 is provided in the sealing cover 2, and the air outlet of the guide air channel 20 faces the gap between the sealing ring 4 and the blocking seal 3; the guide air channel 20 is connected with the container body 1, and when the pressure in the container body 1 increases, the air flow in the container body 1 is suitable for flowing into the guide air channel 20. The sealing cover 2 is covered on the container body 1, and the blocking seal 3 is squeezed and deformed by the container body 1, and two adjacent blocking seals 3 abut against each other; when the sealing cover 2 leaks locally, the airflow in the container body 1 is blown to the gap between the sealing ring 4 and the blocking seal 3 through the guide air channel 20 to prevent the powder in the container body 1 from being ejected outward. Through the arrangement of the blocking seal 3, when the sealing cover 2 is covered on the container body 1, a plurality of blocking seals 3 are squeezed and deformed, and two adjacent blocking seals 3 abut against and overlap each other to improve the airtightness between the sealing cover 2 and the container body 1; and due to the arrangement of the guide air channel 20, when the sealing cover 2 leaks locally, the airflow in the container body 1 flows radially outward, and the guide air channel 20 is suitable for guiding the airflow to blow toward the sealing ring 4 along the axial direction of the container body 1, thereby preventing the dust in the container body 1 from being ejected outward from the leak, and preventing the dust from polluting the environment around the container body 1.

[0070] Reference Figure 2In some embodiments, a plurality of blocking seals 3 are arranged circumferentially around the bottom wall of the sealing cover 2 at equal intervals. When the sealing cover 2 is not covered on the container body 1, the blocking seal 3 and the lower bottom wall of the sealing cover 2 are perpendicular to each other. An annular groove 10 is provided on the upper top wall of the container body 1. A plurality of inclined surfaces 11 are arranged at intervals on the inner side wall of the annular groove 10. One inclined surface 11 corresponds to one blocking seal 3. When the sealing cover 2 is covered on the container body 1, the blocking seal 3 is suitable for being inserted into the annular groove 10. The inclined surface 11 is suitable for guiding the blocking seal 3 to bend and deform. The blocking seal 3 is guided by the inclined surface 11 and gradually slides along the inclined surface 11 until the lower end of the blocking seal 3 abuts against the bottom wall of the annular groove 10. As the sealing cover 2 continues to move toward the container body 1, the blocking seal 3 abuts against an adjacent blocking seal 3. Two adjacent blocking seals 3 overlap each other to form a ring. At this time, the upper and lower sides of the blocking seal 3 are respectively limited by the bottom wall of the annular groove 10 on the sealing cover 2 and the container body 1; and the air guide 20 is suitable for guiding the airflow in the container body 1, so that the pressure on the inner and outer rings of the blocking seal assembly is consistent, avoiding the misalignment with the adjacent blocking seal 3 caused by excessive pressure on the inner ring of the blocking seal 3. Further, the blocking seal 3 is a flexible member, and when the sealing cover 2 is separated from the container body 1, the blocking seal 3 is suitable for restoring the vertical state.

[0071] Furthermore, in order to achieve partial overlap of two adjacent blocking seals 3, the length of the blocking seal 3 is greater than the distance between the two adjacent blocking seals 3. The length of the blocking seal 3 is greater than the distance between two adjacent inclined surfaces 11.

[0072] Preferably, a groove 30 is provided on one side wall of the blocking seal 3, and the groove 30 is adapted to the outer wall of the other side of the blocking seal 3. When adjacent blocking seals 3 overlap each other, the outer wall of one blocking seal 3 fits with the groove 30 of the other blocking seal 3, further improving the tightness between the two blocking seals 3.

[0073] Reference Figure 2 The lower end of the blocking seal 3 is provided with a sphere 31, and the diameter of the sphere 31 is larger than the diameter of the blocking seal 3. When the sphere 31 abuts against the bottom wall of the annular groove 10, the sphere 31 is suitable for continuing to slide along the annular groove 10 until it abuts against the side wall of another blocking seal 3.

[0074] Reference Figure 4The guide air channel 20 includes: a receiving groove 21, which is circumferentially arranged around the sealing cover 2 and is arranged outside the blocking seal 3, and the air outlet direction of the receiving groove 21 is arranged toward the inside of the container body 1; an air inlet groove 22, which is radially opened along the sealing cover 2 and is connected to the receiving groove 21; the air inlet groove 22 is arranged above the blocking seal 3.

[0075] When the air tightness between the sealing cover 2 and the container body 1 is stable, the air flow in the container body 1 is suitable for flowing into the receiving groove 21 through the air inlet groove 22, so that the pressure of the inner ring and the outer ring of the blocking seal 3 are kept consistent, so as to avoid the blocking seal 3 from being misaligned with another adjacent blocking seal 3.

[0076] When the airtightness between the sealing cover 2 and the container body 1 is poor and leakage occurs, the airflow in the container body 1 is ejected radially outward along the container body 1 through the leakage outlet, while the airflow in the receiving groove 21 flows axially toward the leakage outlet of the container body 1. The axial airflow and the radial airflow impact each other to prevent the dust in the container body 1 from being ejected outward from the leakage outlet.

[0077] Some embodiments provide a blender, comprising: a container body 1, which is hollow inside; a sealing cover 2, which is covered on the container body 1; a blocking seal 3, the upper part of which is arranged on the bottom wall of the sealing cover 2; a sealing ring 4, which is arranged on the upper top wall of the container body 1 and has a distance between it and the blocking seal 3; wherein, the sealing cover 2 is covered on the container body 1, the blocking seal 3 is squeezed and deformed by the container body 1, and two adjacent blocking seals 3 abut against each other.

[0078] Furthermore, a plurality of the blocking seals 3 are circumferentially arranged at equal intervals around the bottom wall of the sealing cover 2, an annular groove 10 is provided on the upper top wall of the container body 1, and a plurality of inclined surfaces 11 are arranged at intervals on the inner side wall of the annular groove 10, and one inclined surface 11 corresponds to one blocking seal 3; wherein, when the sealing cover 2 is closed onto the container body 1, the blocking seal 3 is suitable for being inserted into the annular groove 10, and the inclined surface 11 is suitable for guiding the bending and deformation of the blocking seal 3.

[0079] Furthermore, the length of the blocking seal 3 is greater than the distance between two adjacent blocking seals 3. The length of the blocking seal 3 is greater than the distance between two adjacent inclined surfaces 11.

[0080] Reference Figure 2 A driving motor 23 is vertically arranged on the upper part of the sealing cover 2;

[0081] A stirring paddle 24 is rotatably disposed at the lower part of the sealing cover 2 . The stirring paddle 24 is suitable for being inserted into the container body 1 and is drivingly connected to the driving motor 23 .

[0082] Some embodiments provide a working method of a sealing structure, the working method comprising:

[0083] When the sealing cover 2 is closed onto the container body 1, the blocking seal 3 is squeezed and deformed by the container body 1, and two adjacent blocking seals 3 abut against each other;

[0084] If the sealing cover 2 leaks partially, the airflow in the container body 1 is blown toward the gap between the sealing ring 4 and the blocking seal 3 through the air guide channel 20 to prevent the powder in the container body 1 from being ejected outward.

[0085] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0086] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0087] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A mixer, characterized in that: include: A container body (1) having a hollow interior; A sealing cover (2) which covers the container body; A blocking seal (3), the upper portion of which is arranged on the bottom wall of the sealing cover (2); A sealing ring, which is arranged on the upper wall of the container body (1) and has a spacing between it and the blocking sealing member (3); The sealing cover (2) is provided with a flow guiding channel (20), and the air outlet of the flow guiding channel (20) faces the space between the sealing ring and the blocking sealing member (3); The sealing cover (2) is covered on the container body (1), the blocking sealing member (3) is squeezed and deformed by the container body (1), and two adjacent blocking sealing members (3) abut against each other; A plurality of blocking seals (3) are arranged circumferentially around the bottom wall of the sealing cover (2) at equal intervals; The upper top wall of the container body (1) is provided with an annular groove (10), and the inner side wall of the annular groove (10) is provided with a plurality of inclined surfaces (11) at intervals, and one inclined surface (11) corresponds to one blocking seal (3); When the sealing cover (2) is closed onto the container body (1), the blocking seal (3) is adapted to be inserted into the annular groove (10), and the inclined surface (11) is adapted to guide the blocking seal (3) to bend and deform; A groove (30) is formed on one side wall of the barrier seal (3), and the groove (30) is adapted to fit with the outer wall of the other side of the barrier seal (3); wherein, when adjacent barrier seals (3) overlap each other, the outer wall of one barrier seal (3) fits with the groove (30) of another barrier seal (3); When the sealing cover (2) leaks locally, the airflow in the container body (1) is blown toward the gap between the sealing ring and the blocking seal (3) through the air guide channel (20) to prevent the powder in the container body (1) from being ejected outwards.

2. The mixer according to claim 1, characterized in that A sphere (31) is provided at the lower end of the blocking seal (3), and the diameter of the sphere (31) is greater than the diameter of the blocking seal (3).

3. The mixer according to claim 1, characterized in that The flow guide channel (20) comprises: a receiving groove (21) which is arranged circumferentially around the sealing cover (2) and is arranged outside the blocking sealing member (3); An air inlet groove (22) is radially formed on the sealing cover (2) and is in communication with the containing groove (21); The air inlet groove (22) is arranged above the blocking seal (3).

4. The mixer according to claim 3, characterized in that A plurality of blocking seals (3) are arranged circumferentially around the bottom wall of the sealing cover (2) at equal intervals. The upper top wall of the container body (1) is provided with an annular groove (10), and the inner side wall of the annular groove (10) is provided with a plurality of inclined surfaces (11) at intervals, and one inclined surface (11) corresponds to one blocking seal (3); When the sealing cover (2) is closed onto the container body (1), the blocking seal (3) is adapted to be inserted into the annular groove (10), and the inclined surface (11) is adapted to guide the blocking seal (3) to bend and deform.

5. The mixer according to claim 4, characterized in that The length of the blocking seal (3) is greater than the distance between two adjacent blocking seals (3); The length of the blocking seal (3) is greater than the distance between two adjacent inclined surfaces (11).

6. The mixer according to claim 5, characterized in that A driving motor (23) is vertically arranged on the upper part of the sealing cover (2); A stirring paddle (24) is rotatably provided at the lower part of the sealing cover (2); the stirring paddle (24) is suitable for being inserted into the container body (1) and is drivingly connected to the driving motor (23).

7. A working method of a sealing structure, characterized in that: Using the mixer as described in any one of claims 1 to 6, the working method includes: During the process of the sealing cover (2) closing onto the container body (1), the blocking seal (3) is squeezed and deformed by the container body (1), and two adjacent blocking seals (3) abut against each other; If the sealing cover (2) leaks locally, the airflow in the container body (1) is blown toward the gap between the sealing ring and the blocking seal (3) through the air guide channel (20), so as to prevent the powder in the container body (1) from being ejected outwards.

Citation Information

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