Mechanical seal structure for salt lake lithium extraction process

Abstract

The utility model discloses a kind of mechanical sealing structures for salt lake lithium extraction process, including inner clamping ring, outer clamping ring, shaft sleeve, spring seat, atmosphere end moving ring, medium end moving ring, atmosphere end push ring and medium end push ring, the shaft sleeve is equipped with limit step, inner clamping ring is sleeved on the shaft sleeve, and limit is used Limit step, outer clamping ring is sleeved in inner clamping ring, and inner and outer clamping ring are connected by bolt, and the matching surface between inner and outer clamping ring is taper surface, spring seat is connected with the shaft sleeve by screw, spring hole is horizontally provided on spring seat, spring is installed in spring hole, two ends of spring are closely attached with atmosphere end push ring and medium end push ring respectively, atmosphere end moving ring and medium end moving ring are fixedly installed at both ends of spring seat correspondingly, and atmosphere end push ring and medium end push ring are arranged between atmosphere end moving ring and medium end moving ring. The utility model has multiple sealing guarantee, high reliability, long service life, easy maintenance, especially suitable for high magnesium-lithium ratio salt lake lithium extraction process.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical seal technology, and in particular relates to a mechanical seal structure for lithium extraction from salt lakes. Background Technology

[0002] Lithium and its compounds are essential materials for national economy and defense, widely used in many fields such as new energy, nuclear energy, aviation, glass, and ceramics. To meet the needs of sustainable development, the process of extracting lithium from salt lake brine is crucial. Mechanical seals, as indispensable devices in the brine transportation process, determine the efficiency of lithium extraction based on their reliability and service life. Traditional brine transportation mechanical seals suffer from low reliability, short service life, and difficult maintenance due to their limited sealing methods.

[0003] Therefore, addressing the shortcomings of the existing technologies has become the focus of efforts for those skilled in the field. Summary of the Invention

[0004] In order to improve sealing performance and service life, and thus improve the efficiency of lithium extraction, this utility model provides a mechanical seal structure for lithium extraction process in salt lakes, which can completely solve the shortcomings of the above-mentioned prior art.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A mechanical seal structure for lithium extraction from salt lakes includes an inner clamping ring, an outer clamping ring, a bushing, a spring seat, an atmospheric end moving ring, a medium end moving ring, an atmospheric end push ring, and a medium end push ring. The bushing has a limiting step. The inner clamping ring is fitted onto the bushing and limited by the limiting step. The outer clamping ring is fitted outside the inner clamping ring. The inner and outer clamping rings are connected by bolts, and the mating surface between the inner and outer clamping rings is a conical surface. The spring seat is connected to the bushing by screws. A spring hole is horizontally opened on the spring seat, and a spring is installed in the spring hole. The two ends of the spring are tightly fitted with the atmospheric end push ring and the medium end push ring, respectively. The atmospheric end moving ring and the medium end moving ring are correspondingly fixedly installed at both ends of the spring seat, and the atmospheric end push ring and the medium end push ring are positioned between the atmospheric end moving ring and the medium end moving ring.

[0007] Furthermore, it also includes a circulating water jacket, a stuffing box, and a gland that are fitted outside the bushing. The stuffing box and the gland are connected by screws, and the circulating water jacket is connected to the stuffing box by screws. A groove is provided on the bushing, and a limiting block is provided in the groove. The limiting block is connected to the circulating water jacket by screws.

[0008] Furthermore, an atmospheric end stationary ring is fixedly connected to the circulating water jacket, and the sealing surface of the atmospheric end stationary ring is in close contact with the sealing surface of the atmospheric end dynamic ring, while maintaining relative sliding.

[0009] Furthermore, corresponding to the atmospheric end stationary ring, the medium end stationary ring is fixed on the circulating water jacket and stuffing box by an O-ring. The sealing surface of the medium end stationary ring is in close contact with the sealing surface of the medium end dynamic ring and maintains relative sliding.

[0010] Furthermore, the circulating water jacket has an inner cavity, and the atmospheric end moving ring, atmospheric end push ring, spring seat, medium end push ring, and medium end moving ring are all located inside the inner cavity.

[0011] Furthermore, the stuffing box has a sealing cavity, and packing is wound around the bushing corresponding to the sealing cavity. The packing is axially limited by a retaining ring.

[0012] Furthermore, the pressure cap has a spring hole, and a packing spring is installed in the spring hole, with the end face of the packing spring tightly fitted to the retaining ring.

[0013] Compared with the prior art, the advantages of this utility model are: multiple sealing protection, high reliability, long service life and easy maintenance, and it is especially suitable for lithium extraction process in salt lakes with high magnesium-to-lithium ratio. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0016] Figure 3 yes Figure 1 A magnified view of a section at point B in the middle;

[0017] Figure 4 yes Figure 1 A magnified view of a section at point C;

[0018] Figure 5 yes Figure 1 A magnified view of a section at point D;

[0019] The markings in the attached diagram are: 1-inner clamping ring, 2-outer clamping ring, 3-shaft sleeve, 4-limiting block, 5-circulating water jacket, 6-atmospheric end stationary ring, 7-atmospheric end moving ring, 8-atmospheric end push ring, 9-spring seat, 10-medium end push ring, 11-medium end moving ring, 12-medium end stationary ring, 13-O-ring, 14-stuffing box, 15-packing, 16-clamping ring, 17-packing spring, 18-pressure cover, 19-spring. Detailed Implementation

[0020] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0021] like Figures 1 to 5 As shown, a mechanical seal structure for lithium extraction from salt lakes includes an inner clamping ring 1, an outer clamping ring 2, a bushing 3, a circulating water jacket 5, an atmospheric end stationary ring 6, an atmospheric end moving ring 7, an atmospheric end push ring 8, a medium end push ring 10, a medium end moving ring 11, a medium end stationary ring 12, and a stuffing box 14. The bushing 3 has a limiting step at its end. The inner clamping ring 1 is fitted onto the bushing 3 and limited by the limiting step. The outer clamping ring 2 is fitted outside the inner clamping ring 1. The inner clamping ring 1 and the outer clamping ring 2 are connected by bolts, and the inner and outer clamps are tightly secured. The mating surfaces between rings 1 and 2 are conical, thus tightly fastening the bushing 3. During operation, under radial pressure, the bushing 3 rotates with the pump shaft. The bushing 3 has a groove with a limiting block 4. The limiting block 4 is connected to the circulating water jacket 5 by screws to limit the radial displacement of the mechanical seal. A pin is welded to the circulating water jacket 5. The atmospheric end stationary ring 6 is fixed to the circulating water jacket 5 by the pin. The sealing surface of the atmospheric end moving ring 7 is in close contact with the sealing surface of the atmospheric end stationary ring 6. The non-sealing end face of the atmospheric end moving ring 7 is in close contact with the atmospheric end push ring 8. The medium end push ring 10 is in close contact with the non-sealing end face of the medium end moving ring 11. The sealing surface of the medium end moving ring 11 is in close contact with the sealing surface of the medium end stationary ring 12. The medium end stationary ring 12 is fixed to the circulating water jacket 5 and the stuffing box 14 by an O-ring 13.

[0022] like Figure 1 and Figure 3 As shown, the circulating water jacket 5 has an inner cavity, in which an atmospheric end moving ring 7, an atmospheric end push ring 8, a spring seat 9, a medium end push ring 10, and a medium end moving ring 11 are arranged. The spring seat 9 is fixed to the bushing 3 by screws and can rotate with the bushing 3. A spring hole is horizontally opened on the spring seat 9, and a spring 19 is installed in the spring hole. The two ends of the spring 19 are tightly fitted to the atmospheric end push ring 8 and the medium end push ring 10, respectively.

[0023] The mechanical seal of this invention is equipped with a packing seal, which includes a stuffing box 14, packing 15, retaining ring 16, packing spring 17, and gland 18. The gland 18 is connected to the stuffing box 14 by screws. The stuffing box 14 has a sealing cavity. The packing 15 is wound around the bushing 3 and fixed inside the sealing cavity of the stuffing box 14. Axial displacement is restricted by the retaining ring 16. During operation, the gland 18 is fixed to the pump by screws. The gland 18 has a spring hole, and the packing spring 17 is fixed inside the spring hole. The end face of the packing spring 17 is tightly fitted with the retaining ring 16.

[0024] During operation, the bushing 3 rotates together with the pump shaft under the fastening action of the inner clamping ring 1 and the outer clamping ring 2, which drives the spring seat 9 fixed on the bushing 3 to rotate together, and in turn drives the atmospheric end moving ring 7 and the medium end moving ring 11 fixed on the spring seat 9 to rotate together.

[0025] When the pump shaft rotates, the gland 18 fixed on the pump remains relatively stationary, so the circulating water jacket 5 and the stuffing box 14 connected to the gland 18 by screws also remain relatively stationary, and consequently the atmospheric end stationary ring 6 fixed on the circulating water jacket 5 and the medium end stationary ring 12 fixed on the circulating water jacket 5 and the stuffing box 14 also remain relatively stationary.

[0026] Furthermore, under the action of spring 19 and O-ring 13, the end faces of the two sets of sealing rings, namely atmospheric end stationary ring 6 and atmospheric end moving ring 7, and medium end stationary ring 12 and medium end moving ring 11, can maintain close contact and slide relative to each other, thereby achieving a sealing effect.

[0027] In addition, when the pump shaft rotates, the packing 15 remains relatively stationary. Due to the plasticity of the packing material, radial force is generated, and the packing spring 17 compensates for the axial compression of the packing 15, ensuring that the packing 15 always maintains a tight fit with the shaft sleeve 3, thereby further improving the sealing effect. The stuffing box 14 is connected to the circulating water jacket 5 by screws, which also facilitates the replacement of the packing and makes maintenance easier.

[0028] This invention achieves multiple sealing effects by incorporating packing into the mechanical seal, employing different sealing principles, while simultaneously improving the reliability of the mechanical seal. The packing spring compensates for axial displacement of the packing, extending its service life. This invention divides the existing circulating water jacket into two parts: the circulating water jacket 5 and the stuffing box 14, connected by screws, achieving easy disassembly and convenient maintenance of different components. This mechanical seal uses O-rings to compensate for leaks.

[0029] Similarly, it should be understood that, in order to simplify this disclosure and aid in understanding one or more of the various aspects of the invention, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, the inventive aspect lies in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the invention.

[0030] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiments can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components. Except where at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device so disclosed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0031] Furthermore, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of this invention and form different embodiments.

[0032] It should be noted that the above embodiments are illustrative of the present invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mechanical seal structure for lithium extraction from salt lakes, characterized in that: The device includes an inner clamping ring, an outer clamping ring, a bushing, a spring seat, an atmospheric end moving ring, a medium end moving ring, an atmospheric end push ring, and a medium end push ring. The bushing has a limiting step. The inner clamping ring is fitted onto the bushing and limited by the limiting step. The outer clamping ring is fitted outside the inner clamping ring. The inner and outer clamping rings are connected by bolts, and the mating surface between the inner and outer clamping rings is a conical surface. The spring seat is connected to the bushing by screws. The spring seat has a horizontally opened spring hole, and a spring is installed in the spring hole. The two ends of the spring are tightly fitted with the atmospheric end push ring and the medium end push ring, respectively. The atmospheric end moving ring and the medium end moving ring are fixedly installed at the two ends of the spring seat, and the atmospheric end push ring and the medium end push ring are positioned between the atmospheric end moving ring and the medium end moving ring.

2. The mechanical seal structure for lithium extraction from salt lakes according to claim 1, characterized in that: It also includes a circulating water jacket, a stuffing box, and a gland that are fitted outside the bushing. The stuffing box and the gland are connected by screws, and the circulating water jacket is connected to the stuffing box by screws. The bushing is provided with a groove, and a limiting block is provided in the groove. The limiting block is connected to the circulating water jacket by screws.

3. The mechanical seal structure for lithium extraction from salt lakes according to claim 2, characterized in that: The circulating water jacket is fixedly connected to the atmospheric end stationary ring, and the sealing surface of the atmospheric end stationary ring is in close contact with the sealing surface of the atmospheric end dynamic ring, and they maintain relative sliding.

4. The mechanical seal structure for lithium extraction from salt lakes according to claim 2, characterized in that: Corresponding to the atmospheric end stationary ring, the medium end stationary ring is fixed on the circulating water jacket and stuffing box by an O-ring. The sealing surface of the medium end stationary ring is in close contact with the sealing surface of the medium end dynamic ring and maintains relative sliding.

5. The mechanical seal structure for lithium extraction from salt lakes according to claim 2, characterized in that: The circulating water jacket has an inner cavity, and the atmospheric end moving ring, atmospheric end push ring, spring seat, medium end push ring and medium end moving ring are all located inside the inner cavity.

6. The mechanical seal structure for lithium extraction from salt lakes according to claim 2, characterized in that: The stuffing box has a sealing cavity, and packing is wound around the bushing corresponding to the sealing cavity. The packing is axially limited by a retaining ring.

7. The mechanical seal structure for lithium extraction from salt lakes according to claim 6, characterized in that: The pressure cap has a spring hole, and a packing spring is installed in the spring hole. The end face of the packing spring is tightly fitted with the retaining ring.

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