Limestone slurry pump sealing device with stirring damping function

Abstract

The utility model relates to the technical field of slurry pumps, in particular to a sealing device of a limestone slurry pump with a stirring damping function, which comprises a gland body, a pump shaft and a floating ring, an oil seal gland is embedded in the outer wall of one side of the gland body, a spring seat is arranged in the oil seal gland, a support spring is placed in the spring seat, and the pump shaft is connected with the floating ring. A floating ring is arranged on the outer wall of one end of the push ring, a pump shaft is arranged in the gland body, a shaft sleeve is installed on the outer wall of the pump shaft, a rotating ring is connected to the outer wall of one side of the shaft sleeve through a pin shaft, and stirring rods distributed in a circular array mode are installed on the outer wall of the shaft sleeve in an interference mode; and the stirring rod can stir condensed limestone slurry in the pump, so that the limestone slurry is in a flowing state again, the problems of blockage and the like caused by slurry condensation are effectively avoided, and normal operation of the pump is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of slurry pump, concretely relates to a sealing device of limestone slurry pump with stirring damping function. BACKGROUND

[0002] The limestone slurry pump is a kind of equipment specially used for conveying limestone slurry, and usually adopts the working principle of centrifugal pump.When the motor drives the pump shaft to rotate, the impeller on the pump shaft also rotates, under the action of centrifugal force, limestone slurry is sucked into the pump body and is pushed to the outlet along the flow channel of the pump body, so that the conveying of limestone slurry is realized, and the sealing of the limestone slurry pump usually adopts packing seal, dynamic seal, mechanical seal and floating ring seal etc.

[0003] Among them, the floating ring seal adopts the sealing mode that floating ring and rotating ring are matched, the sealing end faces of floating ring and rotating ring keep close contact under the action of liquid pressure and spring force, prevent medium from leaking along the radial direction, so as to realize radial sealing, make the inner circular surface of floating ring and the outer surface of shaft sleeve form a small gap, when medium flows through the gap, throttling effect is generated, the pressure of medium is gradually reduced, so as to achieve the purpose of axial sealing.

[0004] The sealing structure in the prior art has many benefits in use, but still has the following problems, the sealing structure is not perfect enough, when the slurry pump is running at random time, the problem of desulfurization slurry accumulation occurs, so that solid lumps appear due to the deposition and condensation of desulfurization slurry, which can extrude and rub the sealing structure, thereby causing damage to the sealing structure and affecting the service life of the sealing structure. UTILITY MODEL CONTENTS

[0005] In view of the problems in the prior art, the utility model provides a sealing device of limestone slurry pump with stirring damping function.

[0006] The utility model discloses a technical scheme that solves the technical problems is a kind of sealing device of limestone slurry pump with stirring damping function, including gland body, pump shaft and floating ring, oil seal gland is embedded in the outer wall of one side of the gland body, spring seat is provided in the inside of the oil seal gland, supporting spring is placed in the inside of the spring seat, push ring is placed in the other end of the supporting spring, floating ring is provided on the outer wall of one end of the push ring, pump shaft is provided in the inside of the gland body, shaft sleeve is installed on the outer wall of the pump shaft, rotating ring is connected by pin shaft and is connected to the outer wall of one side of the shaft sleeve, the stirring stick of the circular array distribution is installed with the interference on the outer wall of the shaft sleeve.

[0007] By adopting the above technical solution, the spring seat restricts the position of the support spring, and the elastic force of the support spring pushes the push ring towards the floating ring, maintaining continuous close contact between the floating ring and the rotating ring. This allows the floating ring to self-adjust within a certain range and ensures a sealing effect on the pump shaft. When the pump shaft rotates, it carries the bushing and rotating ring, causing the agitator to rotate as well. The agitator stirs the solidified limestone slurry inside the pump, restoring it to a flowing state. This effectively avoids blockage, compression, and impact problems caused by slurry solidification, thus ensuring the pump's performance. During normal operation, the larger size of the disc at one end of the bushing, due to the assembly of the rotating ring and stirring rollers, allows for control of the distance between the bushing and the pump body. This enables the shielding of the floating ring and the gland body, preventing unidirectional scouring of the mud flow. The impeller-driven slurry flow is damped and dispersed on the rotating bushing disc, causing the flow to be redirected by centrifugal force, thus mitigating the impact and ensuring uniform dispersion. This protects the sealing components from damage. Furthermore, the multi-point distribution of the stirring rollers and floating rings forms a rotating labyrinth seal, effectively blocking non-uniform fluid impact and extending the service life of the device.

[0008] Specifically, a pump body is screwed to one side of the outer wall of the pressure cap body, and an O-ring seal is placed between the contact surfaces of the pressure cap body and the pump body. A flushing hole is provided on one side of the upper end of the pressure cap body.

[0009] By adopting the above technical solution, the O-ring seal ensures the sealing between the gland body and the pump body, effectively preventing external impurities from entering the pump body and preventing limestone slurry inside the pump from leaking into the external environment. The flushing hole provides convenience for periodically flushing the gland body. Cleaning fluid can be injected through the flushing hole to flush the slurry that has seeped into the gland body.

[0010] Specifically, the oil seal cap is movably installed with a second screw arranged in a circular array inside, and the oil seal cap is connected to the cap body through the second screw. An O-ring is placed between the contact surfaces of the oil seal cap and the cap body.

[0011] By adopting the above technical solution, the second screw ensures the stability of the connection between the oil seal gland and the gland body. The stable oil seal gland can better fix the internal spring seat, support spring, push ring and floating ring, so that they maintain the correct position and state during operation, thereby ensuring the normal functioning of the floating ring sealing function. In addition, the O-ring seal maintains the sealing between the oil seal gland and the gland body, providing a clean auxiliary seal for the floating ring.

[0012] Specific, the oil seal gland one side outer wall is provided with the positioning card plate for limiting swing, the positioning card plate outside is provided with the drive ring, the first screw is movably installed in the drive ring, the first screw is connected to the shaft sleeve inside through the drive ring, the positioning card plate and the drive ring are located on the shaft sleeve outside.

[0013] By adopting the above technical scheme, the positioning card plate can limit the rotating position of the pump shaft and the shaft sleeve, keep the running stability of the pump shaft, and the first screw can ensure that the drive ring rotates synchronously with the shaft sleeve.

[0014] Specifically, the floating ring is located between the gland body and the shaft sleeve, an O-shaped sealing ring is arranged between the contact surface of the floating ring and the gland body, the floating ring is in contact with the end surface of the rotating ring, and an O-shaped sealing ring is arranged between the contact surface of the rotating ring and the shaft sleeve.

[0015] By adopting the above technical scheme, the O-shaped sealing ring ensures the sealing between the floating ring and the gland body, and the rotating ring and the shaft sleeve are usually sealed by the O-shaped sealing ring, which prevents external impurities from entering and ensures the purity of the medium environment in the pump.

[0016] Specifically, the number of stirring rods is six, and the stirring rods are distributed on the outside of the rotating ring, and an O-shaped sealing ring is arranged between the contact surface of the shaft sleeve and the pump shaft.

[0017] By adopting the above technical scheme, the six stirring rods increase the coverage and uniformity of stirring, and when the shaft sleeve drives the stirring rods to rotate, the condensed lime slurry at different positions in the pump can be fully stirred and dispersed, ensuring the stirring efficiency, and the O-shaped sealing ring further ensures the sealing of the connection between the shaft sleeve and the pump shaft, preventing the slurry from leaking from the connection between the shaft sleeve and the pump shaft during the rotation of the pump shaft, and providing protection for the continuous and stable work of the stirring rod.

[0018] The beneficial effects of the utility model are as follows:

[0019] (1) The sealing device of the lime slurry pump with stirring damping function can stir the condensed lime slurry in the pump, make it return to a flowing state, effectively avoid the blockage caused by condensation, and ensure the normal operation of the pump.

[0020] (2) The sealing device of the limestone slurry pump with stirring damping function described in this utility model can block the floating ring and the pressure plate body, block the unidirectional scouring of the mud flow, and dampen and disperse the slurry flow driven by the impeller on the rotating shaft sleeve disk, so that the incoming flow is diverted by centrifugal force, thereby relieving the impact force and making it evenly dispersed, protecting the sealing components from damage. Moreover, the stirring rods and floating rings distributed at multiple points can form a rotating labyrinth seal, effectively blocking the non-uniform fluid impact force, and improving the service life of the sealing device. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a cross-sectional schematic diagram of the cap body structure of this utility model.

[0023] In the diagram: 1. Pressure cap body; 11. Pump body; 12. Flushing hole; 13. Positioning plate; 14. First screw; 15. Drive ring; 16. Second screw; 17. Oil seal pressure cap; 2. Pump shaft; 21. Shaft sleeve; 22. Stirring rod; 23. Rotating ring; 3. Floating ring; 31. Push ring; 32. Spring seat; 33. Support spring. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] To save manpower and improve efficiency, as one embodiment of this utility model, such as Figure 1 As shown, the sealing device of the limestone slurry pump with stirring damping function of this utility model includes a pressure cap body 1, a pump shaft 2 and a floating ring 3. An oil seal pressure cap 17 is embedded in one side of the outer wall of the pressure cap body 1. A spring seat 32 is provided inside the oil seal pressure cap 17. A support spring 33 is placed inside the spring seat 32. A push ring 31 is placed at the other end of the support spring 33. A floating ring 3 is provided on the outer wall of one end of the push ring 31. The pump shaft 2 is provided inside the pressure cap body 1. A bushing 21 is installed on the outer wall of the pump shaft 2. A rotating ring 23 is pin-connected to one side of the outer wall of the bushing 21. A stirring rod 22 distributed in a circular array is interference-fitted on the outer wall of the bushing 21.

[0026] In use, the spring seat 32 limits the position of the supporting spring 33, and the elastic force of the supporting spring 33 pushes the push ring 31 towards the floating ring 3, so that the floating ring 3 can continuously and closely contact the rotating ring 23, so that the floating ring 3 can adaptively adjust within a certain range, and the sealing effect on the pump shaft 2 is ensured. When the pump shaft 2 rotates, the shaft sleeve 21 and the rotating ring 23 follow the rotation, and the stirring rod 22 rotates together. The stirring rod 22 can stir the condensed limestone slurry in the pump to make it flow again, effectively avoiding the problems of blockage, extrusion and impact caused by the condensation of the slurry, and ensuring the normal operation of the pump. Due to the oversized one-end disc of the shaft sleeve 21 for assembling the rotating ring 23 and the stirring rod 22, the distance between the shaft sleeve 21 and the pump body 11 can be controlled, so that the floating ring 3 and the gland body 1 can be shielded, and the mud flow is blocked by the one-way washing. The slurry flow driven by the impeller is damped and dispersed on the rotating disc of the shaft sleeve 21, so that the flow direction is changed by the centrifugal force to relieve the impact and make it evenly diffuse, thereby protecting the sealing member from damage. The stirring rod 22 and the floating ring 3 distributed at multiple points can form a rotating labyrinth seal, effectively block the non-uniform fluid force, and improve the service life of the device.

[0027] For assembly, as shown in Figure 1 , the pump body 11 is screw-connected to one side of the outer wall of the gland body 1, and an O-ring is placed between the contact surface of the gland body 1 and the pump body 11. A flushing hole 12 is formed in one side of the upper end of the gland body 1.

[0028] In use, the O-ring ensures the sealing between the gland body 1 and the pump body 11, effectively preventing external impurities from entering the interior of the pump body 11, and preventing the limestone slurry in the pump from leaking to the external environment. The setting of the flushing hole 12 provides convenience for periodic flushing of the interior of the gland body 1, and the flushing hole 12 can be used to inject cleaning liquid to flush the slurry infiltrated in the interior of the gland body 1.

[0029] For covering and sealing, as shown in Figure 1 , a circular array of second screws 16 are movably installed in the interior of the oil seal cover 17, and the oil seal cover 17 is connected to the gland body 1 through the second screws 16. An O-ring is placed between the contact surface of the oil seal cover 17 and the gland body 1.

[0030] In use, the second screws 16 ensure the stability of the connection between the oil seal cover 17 and the gland body 1, and the stable oil seal cover 17 can better fix the spring seat 32, the supporting spring 33, the push ring 31 and the floating ring 3 inside, so that they can maintain correct positions and states during operation, thereby ensuring the normal play of the sealing function of the floating ring 3. The O-ring maintains the sealing between the oil seal cover 17 and the gland body 1, and provides clean auxiliary sealing for the floating ring 3.

[0031] In order to ensure the rotation stability, the example is shown in the figure, Figure 1 The oil seal cover 17 one side outer wall is provided with a positioning card 13 for limiting the swing, the positioning card 13 outside is provided with a drive ring 15, the drive ring 15 inside is movably mounted with a first screw 14, the first screw 14 penetrates the drive ring 15 and is connected to the shaft sleeve 21 inside, and the positioning card 13 and the drive ring 15 are located outside the shaft sleeve 21.

[0032] In use, the positioning card 13 can limit the rotation position of the pump shaft 2 and the shaft sleeve 21, keep the running stability of the pump shaft 2, and the first screw 14 can ensure that the drive ring 15 rotates synchronously with the shaft sleeve 21.

[0033] In order to seal, the example is shown in the figure, Figure 1 The floating ring 3 is located between the cover body 1 and the shaft sleeve 21, O-shaped sealing rings are placed between the contact surface of the floating ring 3 and the cover body 1, the floating ring 3 is in contact with the end surface of the rotating ring 23, and O-shaped sealing rings are placed between the contact surface of the rotating ring 23 and the shaft sleeve 21.

[0034] In use, the O-shaped sealing ring ensures the sealing between the floating ring 3 and the cover body 1, and the rotating ring 23 and the shaft sleeve 21 are usually sealed by the O-shaped sealing ring, which prevents external impurities from entering and ensures the purity of the medium environment in the pump.

[0035] In order to stir and break, the example is shown in the figure, Figure 1 The number of stirring rods 22 is designed as six, and the stirring rods 22 are distributed outside the rotating ring 23, and O-shaped sealing rings are placed between the contact surface of the shaft sleeve 21 and the pump shaft 2.

[0036] In use, the six stirring rods 22 increase the coverage and uniformity of stirring, and when the shaft sleeve 21 drives the stirring rods 22 to rotate, the stirring rods 22 can fully stir and break the condensed limestone slurry at different positions in the pump, ensure the stirring efficiency, and the O-shaped sealing ring further ensures the sealing of the connection between the shaft sleeve 21 and the pump shaft 2, prevents the slurry from leaking from the connection between the shaft sleeve 21 and the pump shaft 2 during the rotation of the pump shaft 2, and provides protection for the continuous and stable work of the stirring rod 22.

[0037] In use, after the pump is started, the matching motor drives the pump shaft 2 to start rotating, and the shaft sleeve 21 carries the rotating ring 23 and the stirring rod 22 to rotate synchronously, and the rotating stirring rod 22 stirs and breaks the condensed limestone slurry in the pump;

[0038] The elastic force of the supporting spring 33 pushes the push ring 31 and the floating ring 3, so that the floating ring 3 continuously contacts the rotating ring 23, and the floating ring 3 can be self-adaptively adjusted within a certain range when the shaft sleeve 21 and the rotating ring 23 rotate, thereby ensuring the sealing effect on the pump shaft 2.

[0039] It should be noted that the utility model is a kind of sealing device of limestone slurry pump with stirring damping function, components in the utility model are components known to those skilled in the art, and its structure and principle are known to those skilled in the art by technical manual or by conventional experimental method.

[0040] The basic principle, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above-described embodiments, and the above-described embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A sealing device for a limestone slurry pump with stirring damping function, characterized in that, The device includes a pressure cap body (1), a pump shaft (2), and a floating ring (3). An oil seal pressure cap (17) is embedded in one outer wall of the pressure cap body (1). A spring seat (32) is provided inside the oil seal pressure cap (17). A support spring (33) is placed inside the spring seat (32). A push ring (31) is placed at the other end of the support spring (33). A floating ring (3) is provided on the outer wall of one end of the push ring (31). A pump shaft (2) is provided inside the pressure cap body (1). A bushing (21) is installed on the outer wall of the pump shaft (2). A rotating ring (23) is pin-connected to one outer wall of the bushing (21). A circular array of stirring rods (22) is interference-fitted onto the outer wall of the bushing (21).

2. The sealing device for a limestone slurry pump with stirring damping function according to claim 1, characterized in that, The outer wall of the pressure cap body (1) is screwed to a pump body (11), and an O-ring seal is placed between the contact surfaces of the pressure cap body (1) and the pump body (11). A flushing hole (12) is opened on one side of the upper end of the pressure cap body (1).

3. The sealing device for a limestone slurry pump with stirring damping function according to claim 1, characterized in that, The oil seal cap (17) is movably installed with a second screw (16) arranged in a circular array inside, and the oil seal cap (17) is connected to the cap body (1) through the second screw (16). An O-ring is placed between the contact surfaces of the oil seal cap (17) and the cap body (1).

4. The sealing device for a limestone slurry pump with stirring damping function according to claim 1, characterized in that, The outer wall of the oil seal cap (17) is provided with a positioning plate (13) for limiting swing. A drive ring (15) is provided on the outer side of the positioning plate (13). A first screw (14) is movably installed inside the drive ring (15). The first screw (14) passes through the drive ring (15) and is threaded into the bushing (21). The positioning plate (13) and the drive ring (15) are both located on the outer side of the bushing (21).

5. The sealing device for a limestone slurry pump with stirring damping function according to claim 1, characterized in that, The floating ring (3) is located between the gland body (1) and the bushing (21). An O-ring seal is placed between the floating ring (3) and the gland body (1). The floating ring (3) is in contact with the end face of the rotating ring (23), and an O-ring seal is placed between the rotating ring (23) and the bushing (21).

6. The sealing device for a limestone slurry pump with stirring damping function according to claim 1, characterized in that, The number of stirring rods (22) is six, and the stirring rods (22) are distributed on the outside of the rotating ring (23). An O-ring seal is placed between the bushing (21) and the contact surface of the pump shaft (2).

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