Gas circulating fan structure and sterilization kettle

Abstract

The utility model provides a gas circulation fan structure and sterilization kettle, including motor, main shaft, shaft sleeve, fan blade, seal spacer ring, moving ring fixed seat and mechanical seal, the output shaft of motor is the main shaft, the main shaft has the spacing surface of facing away from the motor; the shaft sleeve, the sealing spacer ring, the moving ring fixing seat and the mechanical seal are all sleeved on the main shaft; the shaft sleeve is located at the end, away from the motor, of the main shaft. One end of the sealing spacer ring abuts against the shaft sleeve, and the other end faces the motor; one end of the movable ring fixing seat abuts against the sealing spacer ring, and the middle section of the movable ring fixing seat abuts against the limiting face. The mechanical seal abuts against the end, away from the sealing spacer ring, of the movable ring fixing base. The shaft sleeve, the sealing ring, the movable ring fixing seat and the mechanical seal abut against one another, the movable ring fixing seat further abuts against the limiting face of the main shaft for limiting, and therefore it is guaranteed that the positions of the components are stable, the mechanical seal can achieve the good sealing effect, and meanwhile the service life of the main shaft is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of sterilizing kettles, in particular to a gas circulation fan structure and a sterilizing kettle. Background Art

[0002] Retort is a kind of equipment used to sterilize food, medicine, cosmetics and other products. It is widely used in the production process of canned and vacuum-packed products to ensure product safety and quality. There are many working principles of retorts, such as sterilization by high temperature, high pressure and chemical methods. Without exception, these retorts need to ensure good sealing performance to avoid internal gas leakage; at the same time, the retort also needs to be equipped with a circulating fan to circulate the gas inside the retort to ensure that the products inside the retort can fully contact the high-temperature gas or chemical gas, so as to achieve a good sterilization effect.

[0003] The existing utility model patent with authorization announcement number CN207054706U discloses a new type of steam sterilization kettle, including a pot body, support legs, a flange head, and a steam pipe, characterized in that vertical rectangular partitions are fixedly connected to both sides of the interior of the pot body, and the right end of the partition is connected to an end partition, the left and right ends of the end partition are flush with the rectangular partition, and the upper and lower ends are consistent with the pot body, the side wall of the end partition is connected to a fan cover, and the right end of the pot body is fixedly connected to a drive motor, the output end of the drive motor penetrates into the pot body and is connected to a fan, and the fan extends into the interior of the fan cover.

[0004] For example, in the sterilizing kettle in the above scheme, a fan is arranged inside the pot body, and a driving motor is arranged outside the pot body. In this structure, since the output shaft of the motor needs to extend into the pot body, there are certain sealing requirements for the position where the output shaft passes through the pot body to ensure that the sterilizing kettle has good sealing performance. Utility Model Content

[0005] In view of this, the utility model proposes a gas circulation fan structure and a sterilizing kettle with stable structure and good sealing performance, thereby achieving complete sealing of the sterilizing kettle.

[0006] The technical solution of the utility model is achieved in this way:

[0007] On the one hand, the utility model provides a gas circulation fan structure and a sterilizing kettle, including a motor, a main shaft, a sleeve, a fan blade, a sealing spacer ring, a dynamic ring fixing seat and a mechanical seal, wherein:

[0008] The output shaft of the motor is a main shaft, the main shaft is a stepped shaft structure, and the main shaft has a limit surface facing away from the motor;

[0009] The shaft sleeve, sealing spacer ring, dynamic ring fixing seat and mechanical seal are all sleeved on the main shaft;

[0010] The shaft sleeve is located at the end of the main shaft away from the motor, and the fan blade is fixed on the shaft sleeve;

[0011] One end of the sealing spacer ring abuts against the shaft sleeve, and the other end faces the motor;

[0012] One end of the dynamic ring fixing seat abuts against the sealing spacer ring, and the middle section of the dynamic ring fixing seat abuts against the limit surface;

[0013] The mechanical seal abuts against one end of the moving ring fixing seat away from the sealing spacer ring.

[0014] On the basis of the above technical solution, preferably, it also includes a fixing seat, which is installed on the component to be sealed, the fixing seat is relatively fixed to the motor, and the inner wall of the fixing seat abuts against one end of the mechanical seal away from the dynamic ring fixing seat.

[0015] On the basis of the above technical solution, preferably, the dynamic ring fixing seat has an extension portion facing the motor, and the mechanical sealing sleeve is arranged on the extension portion.

[0016] On the basis of the above technical solution, preferably, the mechanical seal includes a fixed cylinder, a sealing part, a spring and a static ring, and the fixed cylinder, the sealing part and the spring are all sleeved on the extension part, wherein:

[0017] The fixed tube and the extension part are relatively fixed;

[0018] The sealing portion and the fixed cylinder are arranged at intervals;

[0019] One end of the spring abuts against the fixed cylinder, and the other end abuts against the sealing portion;

[0020] The stationary ring is installed on the fixing seat, and one end of the stationary ring abuts against the sealing part.

[0021] On the basis of the above technical solution, preferably, the fixing seat is a stepped cylindrical structure;

[0022] One end of the static ring away from the spring is in a stepped structure, and the static ring abuts against the inner wall and the stepped end surface of the fixing seat.

[0023] On the other hand, the utility model provides a sterilizing kettle, comprising the above-mentioned gas circulation fan structure.

[0024] On the basis of the above technical solution, preferably, a sterilizing kettle component is included, and a gas circulation fan structure is installed on the sterilizing kettle component.

[0025] On the basis of the above technical solution, preferably, the retort component is a retort body or a retort sealing cover; the motor is assembled on the outside of the retort component;

[0026] The main shaft extends to the inner side of the autoclave component; the shaft sleeve, fan blades, sealing spacer ring, dynamic ring fixing seat and mechanical seal are all located on the inner side of the autoclave component;

[0027] One end of the mechanical seal away from the dynamic ring fixing seat abuts against the sterilization kettle component.

[0028] On the basis of the above technical solution, preferably, it further comprises a mounting seat and a protective net, wherein the mounting seat is arranged on the inner side of the sterilizing kettle component;

[0029] The protection net is arranged on the mounting seat, and the protection net is located at a side of the fan blade away from the motor.

[0030] On the basis of the above technical solution, preferably, it also includes a guide tube, one end of which is connected to the mounting seat, and the other end of which extends toward the fan blades and surrounds the fan blades.

[0031] The gas circulation fan structure and sterilizing kettle of the utility model have the following beneficial effects compared with the prior art:

[0032] (1) The fan blade is mounted on the main shaft of the motor by using a shaft sleeve, and the shaft sleeve, the sealing ring, the dynamic ring fixing seat and the mechanical seal are mutually abutted, and the dynamic ring fixing seat is also abutted and limited with the limiting surface of the main shaft, which ensures the position stability of the above components, so that the mechanical seal can achieve a good sealing effect. At the same time, the above structure makes the main shaft completely in a sealed state, which is conducive to ensuring the service life of the main shaft;

[0033] (2) By providing an extension portion on the dynamic ring fixing seat, which is used to fix the mechanical seal, good positioning of the mechanical seal can be achieved so that the sealing portion can stably abut against the static ring, thereby achieving sealing;

[0034] (3) By installing a protective net and a guide tube inside the sterilizer, a protective effect can be achieved to avoid damage to the fan blades. At the same time, the gas circulation effect can be improved to ensure a good sterilization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 This is a front view of the gas circulation fan structure of the utility model;

[0037] Figure 2 For the utility model Figure 1 Middle AA section view;

[0038] Figure 3 For the utility model Figure 2 A magnified view of the structure at point A;

[0039] Figure 4 It is an assembly diagram of the main shaft, shaft sleeve and dynamic ring fixing seat of the gas circulation fan structure of the utility model;

[0040] Figure 5 For the utility model Figure 4 A magnified view of the structure at point B;

[0041] Figure 6 It is an outer perspective view of the gas circulation fan structure of the utility model;

[0042] Figure 7 It is a three-dimensional view of the inner side of the gas circulation fan structure of the utility model;

[0043] In the figure: 1. motor; 2. main shaft; 201. limit surface; 3. shaft sleeve; 4. fan blade; 5. sealing spacer ring; 6. dynamic ring fixing seat; 61. extension part; 7. mechanical seal; 71. fixing cylinder; 72. sealing part; 73. spring; 74. static ring; 8. fixing seat; 9. autoclave component; 10. mounting seat; 11. protective net; 12. guide tube. DETAILED DESCRIPTION

[0044] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] like Figures 1 to 7 As shown, the gas circulation fan structure of the utility model includes a motor 1, a main shaft 2, a shaft sleeve 3, fan blades 4, a sealing spacer ring 5, a dynamic ring fixing seat 6, a mechanical seal 7, a fixing seat 8, a sterilizing kettle component 9, a mounting seat 10, a protective net 11 and a guide tube 12.

[0046] like Figures 1 to 4As shown, the output shaft of the motor 1 is the main shaft 2, the main shaft 2 is a stepped shaft structure, and the main shaft 2 has a limit surface 201 facing away from the motor 1; the sleeve 3, the sealing spacer 5, the dynamic ring fixing seat 6 and the mechanical seal 7 are all sleeved on the main shaft 2; the sleeve 3 is located at the end of the main shaft 2 away from the motor 1, and the fan blade 4 is fixed on the sleeve 3; one end of the sealing spacer 5 abuts against the sleeve 3, and the other end faces the motor 1; one end of the dynamic ring fixing seat 6 abuts against the sealing spacer 5, and the middle section of the dynamic ring fixing seat 6 abuts against the limit surface 201; the mechanical seal 7 abuts against the end of the dynamic ring fixing seat 6 away from the sealing spacer 5;

[0047] As in the above structure, during installation, the main shaft 2 extends to the environment where gas circulation is required, and the motor 1 is located outside, which can prevent the gas from affecting the motor 1 and ensure the stability of the operation of the motor 1;

[0048] When sealing, the fan blade 4 is assembled on the end of the main shaft 2 away from the motor 1 through the shaft sleeve 3, and then the sealing spacer 5, the dynamic ring fixing seat 6, and the mechanical seal 7 are arranged in sequence from the shaft sleeve 3 to the motor 1, wherein the sealing spacer 5 is used to isolate the shaft sleeve 3 from the dynamic ring fixing seat 6. During the specific assembly, a sealing ring is arranged on the sealing spacer 5 and the dynamic ring fixing seat 6 to ensure a good sealing effect;

[0049] The dynamic ring fixing seat 6 is used to install the mechanical seal 7, and the dynamic ring fixing seat 6 abuts against the sealing spacer ring 5 and the limiting surface 201 of the main shaft 2 to ensure the stability of the position of the dynamic ring fixing seat 6 and the mechanical seal 7, and then the end of the mechanical seal 7 away from the dynamic ring fixing seat 6 abuts against the inner wall of the sealed component. This structure realizes the complete sealing of the part of the main shaft 2 located in the sealed environment, and while ensuring the good sealing of the sealing environment, it also realizes the sealing of the main shaft 2, which can prevent the main shaft 2 from being affected by the gas, so as to ensure the service life of the main shaft 2.

[0050] like Figure 4 As shown, the fixing seat 8 is installed on the component to be sealed, the fixing seat 8 is relatively fixed to the motor 1, and the inner wall of the fixing seat 8 abuts against the end of the mechanical seal 7 away from the dynamic ring fixing seat 6;

[0051] As in the above structure, the fixing seat 8 and the motor 1 are both mounted on the sealed component and are arranged on both sides of the sealed component, so that the mechanical seal 7 abuts against the fixing seat 8 for sealing.

[0052] Furthermore, the dynamic ring fixing seat 6 has an extension portion 61 facing the motor 1, and the mechanical seal 7 is sleeved on the extension portion 61;

[0053] As in the above structure, the dynamic ring fixing seat 6 is used to fix the mechanical seal 7 , which can achieve good positioning of the mechanical seal 7 to ensure the sealing stability of the mechanical seal 7 .

[0054] like Figure 5 As shown, the mechanical seal 7 includes a fixed cylinder 71, a sealing portion 72, a spring 73 and a static ring 74, wherein the fixed cylinder 71, the sealing portion 72 and the spring 73 are all sleeved on the extension portion 61, wherein the fixed cylinder 71 is relatively fixed to the extension portion 61; the sealing portion 72 is spaced apart from the fixed cylinder 71; one end of the spring 73 abuts against the fixed cylinder 71, and the other end abuts against the sealing portion 72; the static ring 74 is installed on the fixed seat 8, and one end of the static ring 74 abuts against the sealing portion 72;

[0055] As in the above structure, when working, the main shaft 2, the sleeve 3, the fan blade 4, the sealing spacer ring 5 and the dynamic ring fixing seat 6 rotate together. In the mechanical seal 7, the fixing cylinder 71, the sealing part 72 and the spring 73 constitute the dynamic ring, which rotates together with the main shaft 2, and the static ring 74 is installed on the component to be sealed, specifically, on the fixing seat 8. When rotating, the sealing part 72 contacts with the static ring 74, and the sealing part 72 rotates relative to the static ring 74, so that sealing can be achieved;

[0056] Among the above components, the spring 73 is used to ensure that the sealing portion 72 stably abuts against the stationary ring 74 .

[0057] like Figure 5 As shown, the fixed seat 8 is a stepped cylindrical structure; the end of the static ring 74 away from the spring 73 is a stepped structure, and the static ring 74 abuts against the inner wall and the stepped end surface of the fixed seat 8;

[0058] As in the above structure, by setting the fixing seat 8 as a stepped cylindrical structure and setting the end of the static ring 74 as a stepped structure, the static ring 74 not only abuts against the inner hole wall of the fixing seat 8, but also abuts against the end surface of the inner hole, thereby ensuring a good sealing effect;

[0059] Figure 5 In the structure shown, the stationary ring 74 only abuts against the inner hole wall of the fixing seat 8, and does not abut against the end face of the stepped hole of the fixing seat 8. In actual application, relying on the abutment of the spring 73, the stationary ring 74 can abut against the end face of the stepped hole of the fixing seat 8 at the same time, thereby realizing double sealing.

[0060] In specific application, a limiting pin is provided on the inner hole wall of the fixing seat 8 and connected to the stationary ring 74 to achieve relative limiting of the stationary ring 74 and the fixing seat 8 .

[0061] The sterilizing kettle of the utility model comprises the above-mentioned gas circulation fan structure, and the gas circulation fan structure is installed on the sterilizing kettle component 9.

[0062] Specifically, the retort component 9 is a retort body or a retort sealing cover;

[0063] In the above structure, the sterilizing kettle body is a fixed structure, and the sealing cover of the sterilizing kettle can be opened to open the sterilizing kettle. When in use, the gas circulation fan structure can be installed in any one of them.

[0064] like Figure 2 , Figure 6 and Figure 7 As shown, the motor 1 is assembled on the outside of the sterilizing kettle component 9; the main shaft 2 extends to the inside of the sterilizing kettle component 9; the shaft sleeve 3, the fan blade 4, the sealing spacer 5, the dynamic ring fixing seat 6 and the mechanical seal 7 are all located on the inside of the sterilizing kettle component 9; the end of the mechanical seal 7 away from the dynamic ring fixing seat 6 abuts against the sterilizing kettle component 9;

[0065] As in the above structure, after the assembly of various components is completed, the motor 1 is located outside the sterilizer, and is used to drive the main shaft 2 and the fan blades 4 to rotate, and the rotation of the fan blades 4 realizes the gas circulation work in the sterilizer.

[0066] like Figure 2 and Figure 7 As shown, the mounting seat 10 is arranged on the inner side of the sterilizing kettle component 9; the protective net 11 is arranged on the mounting seat 10, and the protective net 11 is located on the side of the fan blade 4 away from the motor 1;

[0067] As in the above structure, by providing a mounting seat 10 on the inner side of the sterilizing kettle component 9, a protective net 11 is installed, which can protect the fan blades 4 to prevent the fan blades 4 from being damaged and causing harm;

[0068] Specifically, the mounting seat 10 adopts a rectangular frame structure, the sterilizing kettle component 9 has a circular cross-section, and a gap is left between the mounting seat 10 and the sterilizing kettle component 9 to facilitate gas circulation and ensure gas circulation efficiency in the sterilizing kettle.

[0069] like Figure 2 As shown, one end of the guide tube 12 is connected to the mounting seat 10, and the other end extends toward the fan blade 4 and surrounds the fan blade 4;

[0070] As in the above structure, by providing the guide tube 12, the airflow generated by the rotation of the fan blades 4 can be guided to further ensure the gas circulation efficiency.

[0071] Specific implementation steps:

[0072] When working, close the sterilizer, and driven by the motor 1, the main shaft 2, the sleeve 3, the fan blades 4, the sealing spacer ring 5, and the dynamic ring fixing seat 6 rotate together. At the same time, the fixed cylinder 71, the sealing part 72 and the spring 73 of the mechanical seal 7 rotate accordingly. The sealing part 72 abuts against the static ring 74, and the static ring 74 is installed on the fixing seat 8. The fixing seat 8 is connected to the sterilizer component 9 to ensure good sealing of the penetration point of the main shaft 2.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas circulation fan structure, characterized in that: It comprises a motor (1), a main shaft (2), a shaft sleeve (3), a fan blade (4), a sealing spacer ring (5), a dynamic ring fixing seat (6) and a mechanical seal (7), wherein: The output shaft of the motor (1) is the main shaft (2), the main shaft (2) is a stepped shaft structure, and the main shaft (2) has a limiting surface (201) facing away from the motor (1); The shaft sleeve (3), the sealing spacer ring (5), the dynamic ring fixing seat (6) and the mechanical seal (7) are all sleeved on the main shaft (2); The shaft sleeve (3) is located at an end of the main shaft (2) away from the motor (1), and the fan blade (4) is fixed on the shaft sleeve (3); One end of the sealing spacer ring (5) abuts against the shaft sleeve (3), and the other end faces the motor (1); One end of the dynamic ring fixing seat (6) abuts against the sealing spacer ring (5), and the middle section of the dynamic ring fixing seat (6) abuts against the limiting surface (201); The mechanical seal (7) abuts against an end of the dynamic ring fixing seat (6) away from the sealing spacer ring (5).

2. The gas circulation fan structure according to claim 1, characterized in that: It also includes a fixing seat (8), which is mounted on the component to be sealed, the fixing seat (8) is fixed relative to the motor (1), and the inner wall of the fixing seat (8) abuts against one end of the mechanical seal (7) away from the dynamic ring fixing seat (6).

3. The gas circulation fan structure according to claim 2, characterized in that: The dynamic ring fixing seat (6) has an extension portion (61) facing the motor (1), and the mechanical seal (7) is sleeved on the extension portion (61).

4. The gas circulation fan structure according to claim 3, characterized in that: The mechanical seal (7) comprises a fixed cylinder (71), a sealing portion (72), a spring (73) and a stationary ring (74), wherein the fixed cylinder (71), the sealing portion (72) and the spring (73) are all sleeved on the extension portion (61), wherein: The fixing tube (71) is relatively fixed to the extending portion (61); The sealing portion (72) and the fixing tube (71) are arranged at a distance; One end of the spring (73) abuts against the fixing tube (71), and the other end abuts against the sealing portion (72); The stationary ring (74) is mounted on the fixing seat (8), and one end of the stationary ring (74) abuts against the sealing portion (72).

5. The gas circulation fan structure according to claim 4, characterized in that: The fixing seat (8) is in a stepped cylindrical structure; One end of the stationary ring (74) away from the spring (73) is in a stepped structure, and the stationary ring (74) abuts against the inner wall and the stepped end surface of the fixing seat (8).

6. A sterilizing kettle, characterized in that: It comprises a gas circulation fan structure as described in any one of claims 1 to 5.

7. The retort according to claim 6, characterized in that: It also comprises a sterilizing kettle component (9), and the gas circulation fan structure is installed on the sterilizing kettle component (9).

8. The retort according to claim 7, characterized in that: The retort component (9) is a retort body or a retort sealing cover; The motor (1) is mounted on the outside of the sterilizing kettle component (9); The main shaft (2) extends to the inner side of the sterilizing kettle component (9); The shaft sleeve (3), the fan blade (4), the sealing spacer ring (5), the dynamic ring fixing seat (6) and the mechanical seal (7) are all located on the inner side of the sterilizing kettle component (9); One end of the mechanical seal (7) away from the dynamic ring fixing seat (6) abuts against the sterilization kettle component (9).

9. The retort according to claim 8, characterized in that: It also includes a mounting base (10) and a protective net (11), wherein: The mounting seat (10) is arranged on the inner side of the sterilizing kettle component (9); The protective net (11) is arranged on the mounting seat (10), and the protective net (11) is located on a side of the fan blade (4) away from the motor (1).

10. The retort according to claim 9, characterized in that: It also includes a guide tube (12), the One end of the guide tube (12) is connected to the mounting seat (10), and the other end extends toward the fan blade (4). And surround the fan blade (4).

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