Extraction stirring mechanical sealing device

Abstract

The utility model relates to the technical field of mechanical sealing, in particular to an extraction stirring mechanical sealing device which comprises a stirring barrel, a circular ring, a shaft seat, a rotating shaft, a top cover, a sealing cover and the like. The mixing drum is a cylinder with an upper opening and a containing space, a circular ring matched with the mixing drum is arranged on the upper portion of the mixing drum, a shaft seat is arranged on the outer wall of the circular ring, a rotating shaft is rotatably connected to the shaft seat and connected with the outer wall of a top cover arranged on the upper portion of the mixing drum, and the top cover is used for blocking a notch in the upper portion of the mixing drum. And a sealing cover matched with the inner cavity is arranged in the stirring barrel. The motor output shaft drives the threaded rod to rotate, and when the threaded rod rotates, the guide ball moves along the external thread groove in the threaded rod, so that the sealing cover is driven to ascend and descend along the inner wall of the stirring barrel, an opening in the upper part of the stirring barrel is sealed, and convenience is provided for the extraction machine to stir and extract liquid in the stirring barrel.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to an extraction and stirring mechanical seal device. Background Art

[0002] Centrifugal extractor is a new, fast and efficient liquid-liquid mixing and separation equipment. The centrifugal extractor uses a motor to drive the drum to rotate at high speed. Two immiscible liquids with different densities complete the mixing and mass transfer under the action of the shear force generated by the rotation of the drum or blades, and are quickly separated under the action of the centrifugal force generated by the high-speed rotation of the drum. It is widely used in fine chemicals, pharmaceuticals, hydrometallurgy, petrochemicals, environmental protection, plant extraction and other industries.

[0003] When the centrifugal extractor is used to stir and extract in the mixing drum, two liquids with different densities and immiscible with each other are prone to leak out due to the high-speed stirring and extraction pressure of the extractor.

[0004] Based on this, it is necessary to design an extraction stirring mechanical sealing device to solve the defect of liquid leakage during stirring extraction. Utility Model Content

[0005] Technical solution: An extraction stirring mechanical sealing device includes a stirring drum, a circular ring, a shaft seat, a rotating shaft, a top cover, a sealing cover and a lifting assembly. The stirring drum is a cylinder with an upper opening and an accommodating space. A circular ring matching the stirring drum is arranged on the upper part of the stirring drum, and a shaft seat is arranged on the outer wall of the circular ring. The shaft seat is rotatably connected with the rotating shaft, and the rotating shaft is connected to the outer wall of the top cover arranged on the upper part of the stirring drum. The top cover is used to seal the upper notch of the stirring drum. A sealing cover matching the inner cavity is arranged in the stirring drum. After the top cover seals the upper opening of the stirring drum, the sealing cover is arranged directly below the top cover. The top cover is provided with a lifting assembly for driving the sealing cover to rise and fall to achieve sealing at the opening of the stirring drum.

[0006] In addition, it is particularly preferred that the lifting assembly includes an n-shaped rod, a fixing frame, a bearing, a motor, a threaded rod and a guide ball, the n-shaped rod is symmetrically arranged on the top of the sealing cover, the two vertical parts of the n-shaped rod slide through the top cover, the motor is installed on the top cover through the fixing frame, the output shaft of the motor is connected to the threaded rod through a coupling, the threaded rod rotates through the top cover, a bearing is arranged at the place where the threaded rod passes through the top cover, an external threaded groove is opened on the threaded rod, and a guide ball is arranged on the inner wall of the raised part of the sealing cover, and the guide ball cooperates with the threaded groove on the threaded rod.

[0007] In addition, it is particularly preferred that air holes are provided at corresponding positions of the top cover and the sealing cover.

[0008] In addition, it is particularly preferred that a sealing plug for blocking the air hole on the top cover is slidably connected to the output shaft of the motor.

[0009] Furthermore, it is particularly preferred that a return spring is provided between the bearing and the sealing plug to facilitate the return of the sealing plug.

[0010] In addition, it is particularly preferred that a clamping sleeve is provided on the side of the circular ring opposite to the side where the shaft seat is provided, and the clamping block provided on the top cover can be inserted into the clamping sleeve and engaged with the clamping sleeve.

[0011] The beneficial effect of the utility model is that the threaded rod is driven to rotate by the output shaft of the motor. When the threaded rod rotates, the guide ball moves along the external thread groove on the threaded rod, thereby driving the sealing cover to move up and down along the inner wall of the mixing drum, thereby sealing the opening on the upper part of the mixing drum, thereby providing convenience for the extractor to stir and extract the liquid in the mixing drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0013] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the top cover and the sealing cover of the utility model.

[0014] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the sealing cover of the utility model.

[0015] Figure 4 It is a three-dimensional structural schematic diagram of the motor, return spring, sealing plug, threaded rod and bearing of the utility model.

[0016] Among them, the above-mentioned drawings include the following figure marks: 1, mixing drum, 2, ring, 3, shaft seat, 4, rotating shaft, 5, sleeve, 6, block, 7, top cover, 8, sealing cover, 81, air hole, 9, N-shaped rod, 10, fixing frame, 1001, bearing, 11, motor, 12, return spring, 13, sealing plug, 14, threaded rod, 15, guide ball. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0018] Embodiment: An extraction stirring mechanical sealing device, such as Figure 1 and Figure 2As shown, it includes a mixing drum 1, a ring 2, a shaft seat 3, a rotating shaft 4, a top cover 7, a sealing cover 8 and a lifting assembly. The mixing drum 1 is a cylinder with an upper opening and a accommodating space. A matching ring 2 is arranged on the upper part of the mixing drum 1. The inner diameter of the ring 2 is matched with the outer diameter of the mixing drum 1, and the two are interference fit. A shaft seat 3 is arranged on the left outer wall of the ring 2. The rotating shaft 4 is rotatably connected to the shaft seat 3. The rotating shaft 4 is connected to the outer wall of the top cover 7 arranged on the upper part of the mixing drum 1. The top cover 7 is used to seal the upper notch of the mixing drum 1. The top cover 7 is conveniently sealed for sealing the upper opening of the mixing drum 1 by the rotational cooperation of the rotating shaft 4 and the shaft seat 3. The right side of the ring 2 A ferrule 5 with a rectangular through hole in the middle is provided on the side outer wall, and a "T"-shaped block 6 arranged on the right outer wall of the top cover 7 can be inserted into the ferrule 5 and engaged with the ferrule 5. The material of the block 6 is rubber material. A sealing cover 8 adapted to the inner cavity is provided in the mixing drum 1, and the outer diameter of the sealing cover 8 is adapted to the inner diameter of the mixing drum 1. Circular air holes 81 are provided at corresponding positions of the top cover 7 and the sealing cover 8. The air holes 81 are used to discharge the pressure in the mixing drum 1. After the top cover 7 blocks the upper opening of the mixing drum 1, the sealing cover 8 is arranged directly below the top cover 7. The top cover 7 is provided with a lifting component for driving the sealing cover 8 to rise and fall to achieve sealing of the opening of the mixing drum 1.

[0019] like Figure 3 and Figure 4 As shown, the lifting assembly includes an n-shaped rod 9, a fixing frame 10, a bearing 1001, a motor 11, a threaded rod 14 and a guide ball 15. The n-shaped rod 9 is symmetrically arranged on the top of the sealing cover 8. The two vertical parts of the n-shaped rod 9 slide through the top cover 7. The transverse part of the n-shaped rod 9 is arranged on the upper part of the top cover 7. The motor 11 is installed on the top cover 7 through the fixing frame 10. The motor 11 is a servo motor. The output shaft of the motor 11 is connected to the threaded rod 14 through a coupling. The threaded rod 14 rotates and passes through the top cover 7. The threaded rod 14 is provided with a bearing 1001 at the place where the top cover 7 is passed. The threaded rod 14 is provided with an external thread groove. The inner wall of the central raised part of the sealing cover 8 is provided with a guide ball 15. The guide ball 15 cooperates with the thread groove on the threaded rod 14. When the threaded rod 14 rotates, the guide ball 15 moves along the external thread groove of the threaded rod 14, thereby driving the sealing cover 8 to move up and down along the inner wall of the mixing drum 1, thereby sealing the opening of the mixing drum 1.

[0020] like Figure 3 and Figure 4As shown, a sealing plug 13 for blocking the air hole 81 on the top cover 7 is slidably connected to the output shaft of the motor 11, and the sealing plug 13 is arranged between the two n-shaped rods 9. When the n-shaped rod 9 moves downward, the n-shaped rod 9 squeezes the sealing plug 13 downward. The sealing plug 13 moves downward under the squeezing action and cooperates with the air hole 81 on the top cover 7 to achieve the function of blocking the air hole 81 on the top cover 7. A reset spring 12 is arranged between the bearing 1001 and the sealing plug 13 to facilitate the reset of the sealing plug 13. The n-shaped rod 9 squeezes the sealing plug 13 downward, and the sealing plug 13 moves downward and compresses the reset spring 12. When the n-shaped rod 9 releases the squeezing force on the sealing plug 13, the reset spring 12 is reset, and the sealing plug 13 moves away from the air hole 81 on the top cover 7, thereby releasing the blocking function of the air hole 81 on the top cover 7.

[0021] When in use, the threaded rod 14 is driven to rotate by the output shaft of the motor 11. When the threaded rod 14 rotates, the guide ball 15 rolls along the external thread groove on the threaded rod 14, thereby driving the sealing cover 8 to move up and down along the inner wall of the mixing drum 1, thereby sealing the upper opening of the mixing drum 1; the n-shaped rod 9 moves up and down with the sealing cover 8, and when the n-shaped rod 9 moves downward, it drives the sealing plug 13 to move downward, thereby blocking the air hole 81 on the top cover 7, and the reset spring 12 is compressed. When the n-shaped rod 9 moves upward, the reset spring 12 is reset, and the sealing plug 13 is moved away from the air hole 81 on the top cover 7 under the action of the elastic force of the reset spring 12, thereby releasing the blocking effect on the air hole 81 on the top cover 7.

[0022] It should be understood that this embodiment is only used to illustrate the present invention and is not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. An extraction stirring mechanical sealing device, comprising a stirring drum (1), a circular ring (2), a shaft seat (3), a rotating shaft (4) and a top cover (7), wherein the stirring drum (1) is a cylinder with an upper opening and a containing space, a circular ring (2) adapted thereto is arranged on the upper part of the stirring drum (1), a shaft seat (3) is arranged on the outer wall of the circular ring (2), a rotating shaft (4) is rotatably connected to the shaft seat (3), the rotating shaft (4) is connected to the outer wall of the top cover (7) arranged on the upper part of the stirring drum (1), and the top cover (7) is used to seal the upper notch of the stirring drum (1), wherein the feature is that: The mixing drum (1) further comprises a sealing cover (8) and a lifting assembly. A sealing cover (8) adapted to the inner cavity is arranged in the mixing drum (1). After the top cover (7) seals the upper opening of the mixing drum (1), the sealing cover (8) is arranged directly below the top cover (7). The top cover (7) is provided with a lifting assembly for driving the sealing cover (8) to rise and fall so as to seal the opening of the mixing drum (1).

2. An extraction stirring mechanical sealing device according to claim 1, characterized in that: The lifting assembly comprises an n-shaped rod (9), a fixing frame (10), a bearing (1001), a motor (11), a threaded rod (14) and a guide ball (15); the n-shaped rod (9) is symmetrically arranged on the top of the sealing cover (8); two vertical parts of the n-shaped rod (9) slide through the top cover (7); the motor (11) is installed on the top cover (7) through the fixing frame (10); the output shaft of the motor (11) is connected to the threaded rod (14) through a coupling; the threaded rod (14) rotates and passes through the top cover (7); a bearing (1001) is arranged at the place where the threaded rod (14) passes through the top cover (7); an external thread groove is opened on the threaded rod (14); a guide ball (15) is arranged on the inner wall of the raised part of the sealing cover (8); the guide ball (15) cooperates with the thread groove on the threaded rod (14).

3. An extraction stirring mechanical sealing device according to claim 2, characterized in that: Air holes (81) are provided at corresponding positions of the top cover (7) and the sealing cover (8).

4. The extraction stirring mechanical sealing device according to claim 3, characterized in that: A sealing plug (13) for blocking the air hole (81) on the top cover (7) is slidably connected to the output shaft of the motor (11).

5. The extraction stirring mechanical sealing device according to claim 4, characterized in that: A return spring (12) is arranged between the bearing (1001) and the sealing plug (13) to facilitate the return of the sealing plug (13).

6. The extraction stirring mechanical sealing device according to claim 1, characterized in that: A clamping sleeve (5) is provided on the side of the circular ring (2) opposite to the shaft seat (3), and a clamping block (6) provided on the top cover (7) can be inserted into the clamping sleeve (5) and is clamped and matched with the clamping sleeve (5).

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