Mechanical seal for potassium sulfate preparation process

Abstract

The mechanical seal for the potassium sulfate preparation technology comprises a sealing structure and a bearing structure, the sealing structure comprises a shaft sleeve, a spring seat, an atmosphere end moving ring, a medium end moving ring, an atmosphere end push ring and a medium end push ring, a clamping groove is formed in the shaft sleeve, the spring seat is fixed in the clamping groove through a screw, and the bearing structure is arranged on the bearing structure. The spring seat is provided with a spring hole, a spring is installed in the spring hole, the two ends of the spring are tightly attached to the atmosphere end push ring and the medium end push ring respectively, the atmosphere end moving ring and the medium end moving ring are correspondingly installed at the two ends of the spring seat, and the atmosphere end push ring and the medium end push ring are arranged between the atmosphere end moving ring and the medium end moving ring. Double bearings are adopted for supporting, so that the stability of the shaft is improved, the proportional influence of easy crystallization of a medium, poor equipment precision and the like on the mechanical seal in the potassium sulfate preparation process is overcome, the mounting precision and the sealing performance of the mechanical seal are ensured, and the service life of the mechanical seal is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical seal technical field, especially a kind of mechanical seal for potassium sulfate preparation process. BACKGROUND

[0002] Potassium sulfate is a kind of potassium salt, with the characteristics of small hygroscopicity, not easy to cake, good physical properties and convenient application, is a good water-soluble potassium fertilizer, and is the main raw material for producing chlorine-free nitrogen, phosphorus and potassium ternary compound fertilizer. Due to the large demand for potassium sulfate, its efficient preparation process has gradually become a popular research direction. The present application is based on the research of potassium sulfate preparation process from natural minerals and hard salt mine. Mechanical seal is an important component in potassium sulfate preparation process, which directly affects the preparation efficiency of potassium sulfate. The sealing performance of traditional mechanical seal is highly dependent on the stability of shaft and the precision of equipment, and the reliability is low. Moreover, the environment for natural potassium sulfate preparation is water scarce, and ordinary mechanical seal uses external circulating water cooling and lubrication, which is not suitable for its working condition environment.

[0003] Therefore, how to solve the defects of the above-mentioned prior art has become the direction of efforts for the technical personnel in this field. CONTENT OF UTILITY MODEL

[0004] In order to improve the sealing performance and adapt to the working condition environment, and thus improve the preparation efficiency of potassium sulfate, the utility model provides a kind of mechanical seal for potassium sulfate preparation process, can completely solve the deficiency of above-mentioned prior art.

[0005] The purpose of the utility model is realized by the following technical scheme:

[0006] A kind of mechanical seal for potassium sulfate preparation process, including sealing structure and bearing structure, the sealing structure includes shaft sleeve, spring seat, atmosphere end ring, medium end ring, atmosphere end push ring and medium end push ring, the shaft sleeve is provided with clamping groove, spring seat is fixed in clamping groove by screw, spring hole is formed in spring seat, spring is installed in spring hole, both ends of spring are closely combined with atmosphere end push ring and medium end push ring respectively, atmosphere end ring and medium end ring are installed at both ends of spring seat, and atmosphere end push ring and medium end push ring are arranged between atmosphere end ring and medium end ring.

[0007] Further, the bearing structure includes gland, circulating water jacket, bearing seat, bearing, inner ring, outer ring, stop washer, gland and round nut, the circulating water jacket, gland and bearing seat are arranged outside the shaft sleeve, the circulating water jacket, gland and bearing seat are connected by screw, two bearings are installed on the shaft sleeve at intervals, the inner ring and the outer ring are fixedly connected between the two bearings, the inner ring is combined with the shaft sleeve, the outer ring is combined with the bearing seat, the round nut is threadedly connected with the shaft sleeve, the stop washer is arranged between the round nut and the bearing, and the stop washer is clamped on the round nut, and the circulating water jacket and the bearing seat are provided with water hole.

[0008] Further, the circulating water jacket is fixedly connected with an atmospheric end static ring, and the sealing surface of the atmospheric end static ring is tightly attached to the sealing surface of an atmospheric end dynamic ring.

[0009] Further, the gland is fixedly connected with a medium end static ring corresponding to the atmospheric end static ring, and the sealing surface of the medium end static ring is tightly attached to the sealing surface of a medium end dynamic ring.

[0010] Further, the inner wall of the bearing seat is provided with a skeleton oil seal, and the end surface and the outer wall of the skeleton oil seal are tightly attached to the bearing seat, and the inner wall is in interference fit with the shaft sleeve.

[0011] Further, the end surface of the circulating water jacket is provided with an O-shaped sealing ring, and the bearing seat is threadedly connected with a lifting ring.

[0012] Compared with the prior art, the beneficial effects of the utility model lie in that:

[0013] 1. The utility model adopts double bearing support, increases the stability of the shaft, overcomes the influence of the crystallization of the medium in the potassium sulfate preparation process, poor equipment precision and the like on the mechanical seal, ensures the installation precision and the sealing performance of the mechanical seal, and prolongs the service life of the mechanical seal.

[0014] 2. The utility model uses the skeleton oil seal, can effectively prevent the lubricating oil from leaking and the dust, water vapor and the like from entering the bearing, and guarantees the use performance of the bearing.

[0015] 3. The utility model can adopt oil lubrication, greatly reduces the demand for water, and is suitable for the working condition environment of the preparation of potassium sulfate from natural minerals and hard salt. DRAWINGS

[0016] Figure 1 is a structural schematic view of the utility model;

[0017] Figure 2 is Figure 1 is a local enlarged view of A in the figure;

[0018] Figure 3 is Figure 1 is a local enlarged view of B in the figure;

[0019] Figure 4 is a local enlarged view of the utility model;

[0020] Figure 5 is a sectional view of the skeleton oil seal in the utility model. DETAILED DESCRIPTION

[0021] 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.

[0022] like Figures 1 to 5 As shown, a mechanical seal for a potassium sulfate preparation process includes a sealing structure and a load-bearing structure. The sealing structure includes a bushing 1, a spring seat 7, an atmospheric end moving ring 5, a medium end moving ring 9, an atmospheric end push ring 6, and a medium end push ring 8. The bushing 1 has a groove, and a screw on the spring seat 7 is fixed in the groove on the bushing 1 and rotates with the bushing 1. A spring hole is provided inside the spring seat 7, and a spring 12 is horizontally installed in the spring hole. Both ends of the spring 12 are tightly fitted to the atmospheric end push ring 6 and the medium end push ring 8, respectively. A pin is welded to the circulating water jacket 3, and the atmospheric end stationary ring 4 is fixed to the circulating water jacket 3 by the pin. The sealing surface of the atmospheric end moving ring 5 is tightly fitted to the sealing surface of the atmospheric end stationary ring 4, and the non-sealing end face of the atmospheric end moving ring 5 is tightly fitted to the atmospheric end push ring 6. The non-sealing end face of the medium end push ring 8 and the medium end moving ring 9 are tightly fitted together. The sealing surface of the medium end moving ring 9 is tightly fitted together with the sealing surface of the medium end stationary ring 10. The medium end stationary ring 10 is provided with a groove, which is fixed to the pin on the gland 13.

[0023] The bearing structure includes a pressure cap 13, a lifting ring 11, a round nut 14, a backlash washer 15, a deep groove ball bearing 16, a bearing housing 17, an inner bushing 18, an outer bushing 19, and a circulating water jacket 3. The bearing housing 17 is connected to the pressure cap 13 by screws. The lifting ring 11 is fixed to the bearing housing 17 by threads. The outer bushing 19 is tightly fitted to the bearing housing 17. The inner bushing 18 is tightly fitted to the bushing 1. Deep groove ball bearings 16 are fixed at both ends of the inner bushing 18 and the outer bushing 19. The round nut 14 is connected to the bushing 1 by threads. The backlash washer 15 is clamped on the round nut 14 and is tightly fitted to the deep groove ball bearing 16.

[0024] The end face and outer diameter of the skeleton oil seal 20 are tightly fitted with the bearing housing 17, and the inner diameter is interference-fitted with the bushing 1.

[0025] When the potassium sulfate preparation device is working, the bushing 1 is connected to the rotating shaft by screws and rotates together with the shaft, which drives the spring 7 fixed on the bushing 1 to rotate together, and in turn drives the atmospheric end moving ring 5 and the medium end moving ring 9 fixed on the spring seat 7 to rotate together.

[0026] When the shaft rotates, the circulating water jacket 3 fixed on the device remains relatively static, so the gland 13 and the bearing seat 17 connected with the circulating water jacket 3 by screws also remain relatively static, and then the atmosphere end static ring 4 fixed on the circulating water jacket 3 and the medium end static ring 10 fixed on the gland 13 also remain relatively static, and the circulating water jacket 3 and the bearing seat 17 are provided with water holes, butter can be injected through the water holes to achieve the effect of lubricating and cooling the mechanical seal, the skeleton seal 20 can prevent the leakage of lubricating oil, and the lifting ring 11 on the bearing seat 17 facilitates the transportation of the mechanical seal.

[0027] Further, under the action of the spring 12 and the O-shaped sealing ring 2, the end faces of the two groups of sealing rings, i.e. the atmosphere end static ring 4 and the atmosphere end dynamic ring 5 and the medium end static ring 10 and the medium end dynamic ring 9, can be kept in close contact and relative sliding to achieve the sealing effect.

[0028] In addition, when the shaft rotates, the steel balls of the deep groove ball bearing 16 roll in the deep grooves of the inner and outer raceways, which significantly reduces friction and wear, increases the stability of the shaft, overcomes the influence of the crystallization of the medium in the potassium sulfate preparation process and the poor precision of the equipment on the mechanical seal, ensures the installation precision and sealing performance of the mechanical seal, and prolongs the service life of the mechanical seal.

[0029] Similarly, it should be appreciated that, in the interest of brevity and clearness, in the above description of exemplary embodiments of the present application, various features of the present application have sometimes been grouped together in a single embodiment, figure, or description of it. However, this method of disclosure should not be interpreted as reflecting an intention that the claimed application requires more features than are explicitly recited in each claim. Rather, inventive aspects lie in less than all features of the single embodiments disclosed above. Accordingly, the claims, as follows, define the scope of the application. In this respect, the claims are hereby incorporated into the detailed description, wherein each claim is a separate embodiment of the application.

[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 for potassium sulfate production processes, comprising a seal structure and a carrier structure, characterized in that: The sealing structure comprises a shaft sleeve, a spring seat, an atmosphere end moving ring, a medium end moving ring, an atmosphere end pushing ring and a medium end pushing ring, the shaft sleeve is provided with a clamping groove, the spring seat is fixed in the clamping groove through a screw, the spring seat is provided with a spring hole, a spring is installed in the spring hole, two ends of the spring are tightly combined with the atmosphere end pushing ring and the medium end pushing ring respectively, the atmosphere end moving ring and the medium end moving ring are correspondingly installed at two ends of the spring seat, and the atmosphere end pushing ring and the medium end pushing ring are arranged between the atmosphere end moving ring and the medium end moving ring.

2. The mechanical seal for potassium sulfate production process according to claim 1, characterized in that: The bearing structure comprises a gland, a circulating water jacket, a bearing seat, a bearing, an inner lining ring, an outer lining ring, a retreat-stop washer, a gland and a round nut, the circulating water jacket, the gland and the bearing seat are arranged outside the shaft sleeve, the circulating water jacket, the gland and the bearing seat are connected through screws, two bearings are installed on the shaft sleeve at intervals, the inner lining ring and the outer lining ring are fixedly connected between the two bearings, the inner lining ring is combined with the shaft sleeve, the outer lining ring is combined with the bearing seat, the round nut is threadedly connected with the shaft sleeve, the retreat-stop washer is arranged between the round nut and the bearing, and the retreat-stop washer is clamped on the round nut, and the circulating water jacket and the bearing seat are provided with water holes.

3. The mechanical seal for potassium sulfate production process according to claim 2, characterized in that: The circulating water jacket is fixedly connected with the atmosphere end static ring, and the sealing surface of the atmosphere end static ring is tightly combined with the sealing surface of the atmosphere end moving ring.

4. The mechanical seal for potassium sulfate production process according to claim 3, characterized in that: The gland is fixedly connected with the medium end static ring corresponding to the atmosphere end static ring, and the sealing surface of the medium end static ring is tightly combined with the sealing surface of the medium end moving ring.

5. The mechanical seal for potassium sulfate production process according to claim 4, characterized in that: The inner wall of the bearing seat is provided with a skeleton oil seal, and the end surface and the outer wall of the skeleton oil seal are tightly combined with the bearing seat, and the inner wall is in interference fit with the shaft sleeve.

6. The mechanical seal for potassium sulfate production process according to claim 4, characterized in that: The end surface of the circulating water jacket is provided with an O-shaped sealing ring, and the bearing seat is threadedly connected with a lifting ring.

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