High pressure resistant sealed fluid up shaft drive mechanism

Abstract

The utility model relates to industrial instrument technical field, concretely is a kind of high-pressure-resistant sealed fluid feeding shaft driving mechanism.A kind of high-pressure-resistant sealed fluid feeding shaft driving mechanism, including driving motor, spiral shaft, the output shaft of driving motor is connected with the coupling between spiral shaft, it is characterized in that, the coupling includes the shaft sleeve on the body of connection driving motor and the connecting shaft rotationally arranged in the shaft sleeve, connecting shaft is connected between the output shaft of driving motor and spiral shaft, shaft sleeve is equipped with the embedded slot, connecting shaft is equipped with the sealing sleeve, sealing sleeve includes the shell with the side wall clearance cooperation of connecting shaft and the first sealing ring, second sealing ring that fill the clearance between both and make it sealed, shell and the inner wall of embedded slot are closely matched.Utilize first sealing ring, second sealing ring to form two sections of sealing structure, when one sealing ring surface abrasion, another sealing ring still can maintain sealing effect, prolong the service life of mechanism.

Description

Technical Field

[0001] This utility model relates to the field of industrial machinery technology, specifically a high-pressure resistant sealed fluid feeding shaft drive mechanism. Background Technology

[0002] In industrial production, the conveying of fluid materials such as adhesives and slurries often employs a screw conveyor mechanism, which uses a drive motor to rotate the screw shaft and push the material. Since fluid materials are often viscous and may contain particulate impurities, the sealing performance of the drive mechanism directly affects the operational stability and service life of the equipment.

[0003] The existing feed shaft drive mechanism mostly uses a single-stage sealing ring structure. During long-term rotational friction, the sealing ring is prone to wear, leading to seal failure and fluid leakage. This not only contaminates the equipment and wastes materials, but may also cause malfunctions due to the leaked fluid seeping into the drive components, increasing maintenance costs and downtime. In addition, the single-seal ring structure has weak high-pressure resistance and is easily penetrated by fluid in high-pressure environments. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0005] A high-pressure resistant sealed fluid feeding shaft drive mechanism includes a drive motor and a screw shaft. A coupling connects the output shaft of the drive motor and the screw shaft. The coupling includes a bushing on the body of the drive motor and a connecting shaft rotatably disposed within the bushing. The connecting shaft connects the output shaft of the drive motor and the screw shaft. A groove is provided inside the bushing. A sealing sleeve is fitted on the connecting shaft. The sealing sleeve includes a shell that is clearance-fitted with the side wall of the connecting shaft and a first sealing ring and a second sealing ring that fill the gap between the two to seal. The shell is tightly fitted with the inner wall of the groove.

[0006] Furthermore, the connecting shaft is provided with a raised first step, the first sealing ring is fitted on the first step and is tightly and rotatably engaged with it, the second sealing ring is fitted on the shaft body of the connecting shaft and is tightly and rotatably engaged with it, and the outer shell is provided with a second step that is tightly engaged with the second sealing ring.

[0007] Furthermore, the first sealing ring and the second sealing ring are respectively disposed on both sides of the first step.

[0008] Furthermore, a rotary bearing is fitted onto the shaft of the connecting shaft to allow the connecting shaft to rotate in conjunction with the housing.

[0009] Furthermore, the groove is provided with an annular cover that fits tightly against its inner wall and presses the sealing sleeve against the bottom of the groove.

[0010] Furthermore, the bushing is connected to a feeding pipe, and the screw shaft is inserted into the feeding pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model adopts a two-stage sealing structure and is applied to the feeding shaft drive mechanism of fluids such as glue and slurry. During the operation of the mechanism, the fluid is fed by rotating with the screw shaft. The first sealing ring and the second sealing ring form a two-stage sealing structure. When the surface of one sealing ring is worn, the other sealing ring can still maintain the sealing effect. The two-stage sealing structure helps to enhance the sealing resistance of the mechanism, improve the sealing pressure resistance of the mechanism, and extend the service life of the mechanism.

[0012] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0015] Figure 2 This is a schematic diagram of the sealing sleeve in this utility model. Detailed Implementation

[0016] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] Please see Figures 1-2 The fluid feeding shaft drive mechanism of this secondary seal mainly consists of a drive motor 1, a screw shaft 2, and a coupling 3. The drive motor 1 serves as the power source, and its output shaft is connected to the screw shaft 2 via the coupling 3 to drive the screw shaft 2 to rotate and achieve fluid feeding.

[0018] The coupling 3 includes a bushing 31 and a connecting shaft 32. The bushing 31 is fixedly connected to the body of the drive motor 1, and the connecting shaft 32 is rotatably disposed inside the bushing 31. Its two ends are respectively connected to the output shaft of the drive motor 1 and the screw shaft 2 to realize the transmission of power.

[0019] The bushing 31 has an internal groove 311, and a sealing sleeve 33 is fitted onto the connecting shaft 32. The sealing sleeve 33 consists of an outer shell 331, a first sealing ring 332, and a second sealing ring 333. There is a gap between the outer shell 331 and the side wall of the connecting shaft 32. The first sealing ring 332 and the second sealing ring 333 fill the gap to achieve a seal between the connecting shaft 32 and the outer shell 331. The outer wall of the outer shell 331 fits tightly with the inner wall of the groove 311, ensuring a seal between the sealing sleeve 33 and the bushing 31.

[0020] A raised first step 321 is integrally formed on the connecting shaft 32. A first sealing ring 332 is fitted onto the first step 321 and fits tightly against it, and can rotate with the connecting shaft 32. A second sealing ring 333 is fitted onto the shaft body of the connecting shaft 32, also fitting tightly against it and rotating with it. A second step 3311 is provided on the inner wall of the outer shell 331. The second step 3311 fits tightly against the second sealing ring 333, providing positioning and compression for the second sealing ring 333. The first sealing ring 332 and the second sealing ring 333 are located on both sides of the first step 321, forming a two-stage seal. This two-stage sealing structure helps to enhance the sealing resistance of the mechanism and improve its sealing pressure resistance.

[0021] To enable flexible rotation between the connecting shaft 32 and the housing 331 and to enhance the sealing effect of the first sealing ring 332, a rotary bearing 34 is fitted onto the shaft of the connecting shaft 32. Specifically, a rotary bearing 34 is provided at each of the upper and lower end faces of the first step 321. The housing 331 applies downward pressure through the second step 3311 on its inner wall, causing the two rotary bearings 34 to press the first sealing ring 332 tightly from the upper and lower end faces of the first step 321, effectively improving the sealing performance and pressure resistance of the first sealing ring 332.

[0022] An annular cover 35 is installed inside the groove 311. The outer wall of the annular cover 35 fits tightly with the inner wall of the groove 311, and its lower end face contacts the upper end face of the sealing sleeve 33, firmly pressing the sealing sleeve 33 to the bottom of the groove 311 to ensure that the sealing sleeve 33 is installed securely.

[0023] The bushing 31 is also connected to the feeding pipe 4. One end of the spiral shaft 2 is inserted into the feeding pipe 4. When the spiral shaft 2 rotates under the drive of the drive motor 1, it can transport the fluid in the feeding pipe 4 upward to complete the feeding operation.

[0024] During the operation of the mechanism, the first sealing ring 332 and the second sealing ring 333 work together to seal. Even if one of them wears out, the other can still maintain the seal, effectively preventing fluid leakage, extending the service life of the mechanism and reducing maintenance costs.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A high-pressure resistant sealed fluid feeding shaft drive mechanism, comprising a drive motor and a screw shaft, wherein a coupling connects the output shaft of the drive motor and the screw shaft, characterized in that, The coupling includes a bushing on the body that connects to the drive motor and a connecting shaft rotatably disposed within the bushing. The connecting shaft connects the output shaft of the drive motor and the screw shaft. The bushing has a groove, and a sealing sleeve is fitted on the connecting shaft. The sealing sleeve includes a housing that is clearance-fitted with the side wall of the connecting shaft and a first sealing ring and a second sealing ring that fill the gap between the two to seal. The housing is tightly fitted with the inner wall of the groove.

2. The high-pressure resistant sealed fluid feeding shaft drive mechanism according to claim 1, characterized in that, The connecting shaft has a raised first step, a first sealing ring is fitted on the first step and is tightly and rotatably engaged with it, a second sealing ring is fitted on the shaft body of the connecting shaft and is tightly and rotatably engaged with it, and the outer shell has a second step that is tightly engaged with the second sealing ring.

3. The high-pressure resistant sealed fluid feeding shaft drive mechanism according to claim 2, characterized in that, The first sealing ring and the second sealing ring are respectively disposed on both sides of the first step.

4. The high-pressure resistant sealed fluid feeding shaft drive mechanism according to claim 1, characterized in that, A rotary bearing is fitted onto the shaft of the connecting shaft to allow the connecting shaft to rotate in conjunction with the housing.

5. The high-pressure resistant sealed fluid feeding shaft drive mechanism according to claim 1, characterized in that, The groove is provided with an annular cover that fits tightly against its inner wall and presses the sealing sleeve against the bottom of the groove.

6. The high-pressure resistant sealed fluid feeding shaft drive mechanism according to claim 1, characterized in that, The bushing is connected to the feed pipe, and the screw shaft is inserted into the feed pipe.

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