Metal non-contact mechanical sealing device for stirrer

Abstract

The utility model relates to the technical field of mechanical sealing, and discloses a metal non-contact type mechanical sealing device for a stirrer, which comprises an inner ring and an outer ring, the outer ring is arranged on the outer side of the inner ring, a ball is arranged between the outer ring and the inner ring, a sealing mechanism is arranged on the inner ring, and the sealing mechanism is arranged on the outer ring. The sealing mechanism comprises two sealing plates, and the two sealing plates are arranged on the left side and the right side of the inner ring correspondingly. Through the design of the sealing mechanism, in the using process, a sealing plate plays a main sealing role, in order to avoid leakage of lubricating substances in a gap between the sealing plate and the inner ring, an annular protection plate extends into a first groove to form a blocking condition, so that leakage of the lubricating substances is reduced, and on the basis, the sealing effect is greatly improved. And the outer protection plate and the rubber inner protection plate are matched to further prevent external substances from entering, so that the service life of equipment can be effectively guaranteed when the sealing device is applied to a stirrer and other scenes needing high sealing performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical seal technical field especially is a kind of metal non-contact mechanical seal device for stirrer. BACKGROUND

[0002] So-called mechanical seal is the device that by at least one pair of vertical to the end face of rotation axis under the action of fluid pressure and compensation mechanism elastic force and the cooperation of auxiliary seal, end face keeps sticking and relative sliding is prevented fluid leakage, mechanical seal is divided into contact type mechanical seal and non-contact mechanical seal, wherein the sealing member in non-contact seal does not contact with rotating body itself, can effectively reduce friction and wear, more suitable for high-speed rotating scene application.

[0003] Patent announcement No. CN219888524U discloses a non-contact bearing sealing structure, which comprises a bearing inner ring and a bearing outer ring, a plurality of bearing balls are arranged between the bearing inner ring and the bearing outer ring, sealing pads are arranged on the upper and lower sides between the bearing inner ring and the bearing outer ring, a group of outer ring sealing grooves are formed in the inner wall of the bearing outer ring, a sealing ring is arranged below the outer side of the sealing pad, the corresponding sealing ring is arranged in the outer ring sealing groove, a group of inner ring sealing grooves are formed in the inner wall of the bearing inner ring, and a sealing assembly is arranged in the inner ring sealing groove, the sealing assembly comprises a group of sealing clamping surfaces arranged in the inner ring sealing groove, a grease guide lip is arranged below the inner side of the sealing pad, a plurality of grease storage lips are arranged on the inner side of the grease guide lip, and the plurality of grease storage lips are indirectly arranged with the group of sealing clamping surfaces.

[0004] The shaft connected to the stirrer often needs to rotate at high speed during work, and metal non-contact sealing device is generally used to reduce wear. The above device improves the sealing performance of the bearing during use, but the sealing method is relatively single. When the stirrer equipment works, the agitation of the stirring material in the equipment will further increase the sealing pressure of the bearing position. Simply using the above method for sealing, small impurities or liquid substances may still enter through the gap, thereby affecting the service life of the bearing. Therefore, a metal non-contact mechanical sealing device for stirrer is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems, the utility model provides a metal non-contact mechanical sealing device for stirrer.

[0006] The metal non-contact mechanical sealing device for stirrer provided by the utility model adopts the following technical scheme:

[0007] A metal non-contact mechanical sealing device for a stirrer, comprising an inner ring and an outer ring, the outer ring is arranged outside the inner ring, and balls are arranged between the outer ring and the inner ring, and a sealing mechanism is arranged on the inner ring;

[0008] The sealing mechanism comprises two sealing plates, which are arranged on the left and right sides of the inner ring respectively, and the two sealing plates are respectively fitted with the two sides of the outer ring, the side of the sealing plate away from the inner ring is provided with an outer guard plate, the outer guard plate is fitted with the sealing plate, the two sides of the inner ring are fixedly connected with rubber inner guard plates, the outer guard plate is arranged outside the rubber inner guard plate, and an annular guard plate is fixedly connected to the inner ring, a first groove is formed in the sealing plate, and the annular guard plate extends into the first groove.

[0009] By adopting the above technical scheme, in the use process, the sealing plate plays a main sealing role, in order to avoid the leakage of lubricating substances at the gap between the sealing plate and the inner ring, the annular guard plate extends into the first groove to form a blocking condition, so as to reduce the leakage of lubricating substances, and on this basis, the outer guard plate and the rubber inner guard plate can further form a block to the entry of external substances, so as to effectively ensure the service life of the equipment in the application of the stirrer and other scenes requiring strong sealing performance.

[0010] Preferably, the sealing plate is integrally formed with an extension plate, and the extension plate is arranged outside the annular guard plate.

[0011] By adopting the above technical scheme, there is a small gap between the extension plate and the annular guard plate, which can avoid friction between the two and also avoid leakage of lubricating substances.

[0012] Preferably, one end of the annular guard plate is provided with an auxiliary groove, and an auxiliary plate is integrally formed in the first groove and extends into the auxiliary groove.

[0013] By adopting the above technical scheme, after the auxiliary plate enters the auxiliary groove, the possibility of substance circulation in the first groove is further reduced, so as to strengthen the sealing.

[0014] Preferably, a second groove is formed in the inner side of the outer guard plate, and an entering plate is integrally formed on the rubber inner guard plate and extends into the second groove.

[0015] By adopting the above technical scheme, the rubber inner guard plate can be deformed when the sealing plate is installed, so as to ensure the flexible installation and removal of the sealing plate.

[0016] Preferably, a pressing plate is arranged on one side of the sealing plate, the pressing plate is fitted with the sealing plate, a fixing bolt is arranged on one side of the pressing plate, the fixing bolt penetrates through the pressing plate and extends into the inner ring, and the fixing bolt is connected with the outer ring through threads.

[0017] By adopting the technical scheme, the pressing plate is fixed outside the sealing plate, more uniform pressing can be provided, and the fit of the sealing plate and the outer ring can be ensured.

[0018] Preferably, a positioning rod is fixedly connected to the sealing plate, and a fixing plate is integrally formed on the outer protective plate, and the positioning rod penetrates through the fixing plate.

[0019] By adopting the technical scheme, after the positioning rod penetrates through the fixing plate, the outer protective plate is positioned.

[0020] Preferably, a fixing nut is arranged outside the positioning rod, the positioning rod penetrates through the fixing nut and is connected with the fixing nut through threads, and the fixing nut is attached to the fixing plate.

[0021] By adopting the technical scheme, after the fixing nut is tightened outside the positioning rod, the installation of the fixing plate is completed.

[0022] In summary, the utility model has the following beneficial technical effects:

[0023] 1. A metal non-contact mechanical sealing device for a mixer, through the design of a sealing mechanism, in the use process, the sealing plate plays a main sealing role, in order to avoid the leakage of lubricating substances at the gap between the sealing plate and the inner ring, the annular protective plate extends into the first groove to form a blocking condition, thereby reducing the leakage of lubricating substances, and on this basis, the outer protective plate and the rubber inner protective plate cooperate to further form a block to the entry of external substances, thereby effectively ensuring the service life of the equipment when applied to the mixer and other scenes requiring strong sealing performance.

[0024] 2. A metal non-contact mechanical sealing device for a mixer, after the fixing nut outside the positioning rod is unscrewed, the outer protective plate can be removed, then the fixing bolt is directly screwed and removed, the pressing plate can be removed and the sealing plate can be further removed, thereby achieving rapid disassembly, and correspondingly, the device can be quickly assembled and disassembled, which is convenient for users to operate and maintain. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic view of the structure of the utility model;

[0026] Figure 2 It is a sectional view of the structure of the utility model;

[0027] Figure 3 It is an enlarged view of A in Figure 2

[0028] Figure 4 It is an enlarged view of B in Figure 2

[0029] ​​Figure 5 The structure splitting view of the utility model.

[0030] Mark explanation: 1, inner ring ring; 2, outer ring; 3, sealing mechanism; 31, sealing plate; 32, outer shield; 33, rubber inner shield; 34, annular shield; 35, first recess; 36, extension plate; 37, auxiliary groove; 38, auxiliary plate; 39, second recess; 391, access plate; 392, pressing plate; 393, fixing bolt; 394, positioning rod; 395, fixed plate; 396, fixed nut; 4, ball. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying Figure 1 - attached Figure 5 The utility model makes further detailed description.

[0032] The utility model discloses a metal non-contact type mechanical sealing device for stirrer, which refers to Figures 1-5 , including inner ring ring 1 and outer ring 2, outer ring 2 sets up at the outer side of inner ring ring 1, and the ball 4 is arranged between outer ring 2 and inner ring ring 1, and the sealing mechanism 3 is arranged on the inner ring ring 1, the sealing mechanism 3 includes two sealing plates 31, and the two sealing plates 31 are arranged on the left and right sides of the inner ring ring 1 respectively, and the two sealing plates 31 are respectively attached to the two sides of the outer ring 2, and the sealing plate 31 is provided with the outer shield 32 on the side away from the inner ring ring 1, and the outer shield 32 is attached to the sealing plate 31, and the rubber inner shield 33 is fixedly connected to the two sides of the inner ring ring 1;

[0033] The outer shield 32 is arranged on the outer side of the rubber inner shield 33, the annular shield 34 is fixedly connected to the inner ring ring 1, the first recess 35 is formed in the sealing plate 31, and the annular shield 34 extends into the first recess 35, in the use process, the sealing plate 31 plays a main sealing role, to avoid the leakage of lubricating substances at the gap between the sealing plate 31 and the inner ring ring 1, the annular shield 34 extends into the first recess 35 to form a blocking condition, so as to reduce the leakage of lubricating substances, and on this basis, the outer shield 32 and the rubber inner shield 33 can further form a block to the entry of external substances, so as to effectively guarantee the service life of the equipment when applied to the stirring device and other scenes requiring strong sealing performance.

[0034] The extension plate 36 is integrally formed on the sealing plate 31 and is arranged outside the annular guard plate 34. A small gap exists between the extension plate 36 and the annular guard plate 34, which can avoid friction between the two and also avoid leakage of lubricating substances. The annular guard plate 34 is provided with an auxiliary groove 37 at one end. The auxiliary plate 38 is integrally formed inside the first groove 35. The auxiliary plate 38 extends into the auxiliary groove 37. After the auxiliary plate 38 enters the auxiliary groove 37, the possibility of substance flow in the first groove 35 is further reduced, thereby enhancing the sealing. The second groove 39 is arranged inside the outer guard plate 32. The entering plate 391 is integrally formed on the rubber inner guard plate 33 and extends into the second groove 39. The rubber inner guard plate 33 can be deformed when the sealing plate 31 is installed, so as to ensure the flexible installation and removal of the sealing plate 31.

[0035] The pressing plate 392 is arranged on one side of the sealing plate 31 and is attached to the sealing plate 31. The fixing bolt 393 is arranged on one side of the pressing plate 392 and extends into the outer ring 2. The fixing bolt 393 is connected with the outer ring 2 through threads, thereby fixing the pressing plate 392 outside the sealing plate 31. The pressing plate 392 can provide more uniform pressing and ensure the attachment of the sealing plate 31 and the outer ring 2. The positioning rod 394 is fixedly connected to the sealing plate 31. The fixing plate 395 is integrally formed on the outer guard plate 32. The positioning rod 394 penetrates the fixing plate 395. After the positioning rod 394 penetrates the fixing plate 395, the outer guard plate 32 is positioned. The fixing nut 396 is arranged outside the positioning rod 394. The positioning rod 394 penetrates the fixing nut 396 and is connected with the fixing nut 396 through threads. The fixing nut 396 is attached to the fixing plate 395. After the fixing nut 396 is tightened outside the positioning rod 394, the installation of the fixing plate 395 is completed.

[0036] In actual operation, when the device is used, a small gap exists between the sealing plate 31 and the inner ring 1. Therefore, the inner ring 1 does not rub against the sealing plate 31 during rotation, thereby reducing wear in the case of rapid rotation required by the stirrer. In order to prevent the lubricating substances between the inner ring 1 and the outer ring 2 from leaking through the gap between the sealing plate 31 and the inner ring 1, the annular guard plate 34 extends into the first groove 35. The outer side of the annular guard plate 34 and the inner side of the extension plate 36 are inclined towards the direction of the ball 4. Therefore, when the lubricating substances contact the annular guard plate 34 or the extension plate 36, they can slide down along the inclined direction. In addition, the auxiliary plate 38 extends into the auxiliary groove 37 of the annular guard plate 34, thereby increasing the complexity of the entire channel and further reducing the passability of the lubricating substances along the channel to the outside, thereby fully ensuring the sealing performance.

[0037] In order to solve the problem that the sealing pressure of the bearing position is further increased by the agitation of the stirring material in the device when the stirrer device is working, the rubber inner guard plate 33 and the outer guard plate 32 are arranged on the outer side, the rubber inner guard plate 33 is not in direct contact with the outer guard plate 32, and the rubber inner guard plate 33 will not be in contact with the outer guard plate 32 when the rubber inner guard plate 33 rotates with the inner ring 1, so as to reduce the abrasion, only a small gap exists between the outer guard plate 32 and the rubber inner guard plate 33, the possibility of the entry of the internal material of the stirrer during working can be greatly ensured, and the entering plate 391 on the rubber inner guard plate 33 extends into the second recess 39, which can further reduce the possibility of the entry of the external material, based on the above steps, the sealing performance of the device during use can be fully ensured.

[0038] Finally, the outer fixing nut 396 of the positioning rod 394 is unscrewed, and then the outer guard plate 32 can be removed, when the sealing plate 31 needs to be removed, the fixing bolt 393 is directly screwed and removed, and then the pressing plate 392 can be removed, the sealing plate 31 is further removed after the pressing plate 392 is removed, the opening of the sealing plate 31 is in contact with the rubber inner guard plate 33 when the sealing plate 31 is removed, the rubber inner guard plate 33 can pass through the sealing plate 31 by deformation, and the rubber inner guard plate 33 is deformed to the initial state after the sealing plate 31 passes through, so as to facilitate subsequent use, so as to quickly disassemble, and the device can be quickly assembled and disassembled, which is convenient for users to operate and maintain.

[0039] The above are preferred embodiments of the present application, and are not limited to the protection scope of the present application, so that: any equivalent changes made according to the structure, shape and principle of the present application should be covered in the protection scope of the present application.

Claims

1. A metal non-contact mechanical seal device for a mixer, characterized by: It includes inner ring (1) and outer ring (2), the outer ring (2) is arranged outside the inner ring (1), the outer ring (2) and the inner ring (1) are provided with ball (4), the inner ring (1) is provided with sealing mechanism (3); The sealing mechanism (3) includes two sealing plates (31), two sealing plates (31) are arranged on the left and right sides of the inner ring (1), two sealing plates (31) are respectively attached to the two sides of the outer ring (2), the side of the sealing plate (31) away from the inner ring (1) is provided with an outer guard plate (32), the outer guard plate (32) is attached to the sealing plate (31), the inner ring (1) is fixedly connected with rubber inner guard plate (33) on both sides, the outer guard plate (32) is arranged outside the rubber inner guard plate (33), the inner ring (1) is fixedly connected with annular guard plate (34), the first recess (35) is formed in the sealing plate (31), the annular guard plate (34) extends into the first recess (35).

2. A metal non-contact mechanical seal device for a mixer according to claim 1, characterized in that: The sealing plate (31) is integrally formed with an extension plate (36), and the extension plate (36) is arranged outside the annular guard plate (34).

3. A metal non-contact mechanical seal device for a mixer according to claim 1, characterized in that: The annular guard plate (34) is provided with an auxiliary groove (37) at one end, and the first recess (35) is integrally formed with an auxiliary plate (38) inside, and the auxiliary plate (38) extends into the auxiliary groove (37).

4. A metal non-contact mechanical seal device for a mixer according to claim 1, characterized in that: The inner side of the outer guard plate (32) is provided with a second recess (39), and the rubber inner guard plate (33) is integrally formed with an entering plate (391), and the entering plate (391) extends into the second recess (39).

5. A metal non-contact mechanical seal device for a mixer according to claim 1, characterized in that: One side of the sealing plate (31) is provided with a pressing plate (392), and the pressing plate (392) is attached to the sealing plate (31), and the pressing plate (392) is provided with a fixed bolt (393) on one side, and the fixed bolt (393) penetrates the pressing plate (392) and extends into the outer ring (2), and the fixed bolt (393) is connected with the outer ring (2) through threads.

6. A metal non-contact mechanical seal device for a mixer according to claim 1, characterized in that: The sealing plate (31) is fixedly connected with a positioning rod (394), and the outer guard plate (32) is integrally formed with a fixed plate (395), and the positioning rod (394) penetrates the fixed plate (395).

7. A metal non-contact mechanical seal device for a mixer according to claim 6, characterized in that: The outer part of the positioning rod (394) is provided with a fixed nut (396), and the positioning rod (394) penetrates the fixed nut (396) and is connected with the fixed nut (396) through threads, and the fixed nut (396) is attached to the fixed plate (395).

Images