CN215566656U - Special single-stage mud pump and spray seeding machine - Google Patents

Abstract

The utility model belongs to the technical field of greening engineering equipment, and particularly discloses a special single-stage slurry pump and a spray-seeding machine, which comprise a mechanical seal and a first adjusting mechanism, wherein the first adjusting mechanism is used for adjusting the axial movement of a static ring of the mechanical seal and limiting the static ring, and a dynamic sealing structure is arranged between the static ring and a mounting hole of an upper mounting main shaft of a pump shell; this device utilizes first guiding mechanism to adjust quiet ring axial displacement according to the moving direction adjustment of main shaft when the impeller clearance, and then when adjusting the impeller clearance, mechanical seal's position also adjusts along with it, realize dynamic seal, make mechanical seal be in best sealed position all the time, avoid appearing the clearance change between current mechanical seal rotating ring and the quiet ring, cause mechanical seal to be pressed too tightly or too loose, lead to mechanical seal tension and damage, or too loose can not play sealed effect, thereby prolong mechanical seal's life, promote sealed effect.

Description

Special single-stage mud pump and spray seeding machine

Technical Field

The utility model relates to the technical field of greening engineering equipment, in particular to a special single-stage mud pump and a spray-seeding machine.

Background

The pump is the important part of spray-seeding machine, and the mechanical seal structure that traditional pump adopted is that quiet ring and rotating ring mutually support, and the quiet ring of mechanical seal is fixed at the pump case inner chamber, and the mechanical seal rotating ring is fixed epaxially, compresses tightly the rotating ring to the optimum position by the impeller, but when this mode adjustment impeller position, when clearance change along with between mechanical seal rotating ring and the quiet ring, can appear that mechanical seal is pressed too tightly or too pine to the mechanical seal overtightened and damage appears, or too pine can not play the problem of sealing action.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model aims to provide a special single-stage slurry pump and a spray-seeding machine, so as to solve the problems that a mechanical seal is easy to block and damage, prolong the service life and effectively enhance the sealing effect.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

the special single-stage mud pump comprises a mechanical seal and a first adjusting mechanism, wherein the first adjusting mechanism is used for adjusting the axial movement of a static ring of the mechanical seal and limiting the static ring, a dynamic sealing structure is arranged between the static ring and a mounting hole in a pump shell, and the mounting hole is used for mounting a main shaft.

Furthermore, the static ring is arranged at the end part of the inner end of the end cover pressing plate inserting installation hole of the slurry pump, a first groove which is coaxial and is used for clamping the O-shaped ring is arranged on the outer circumference of the inner end of the end cover pressing plate, and the inner end of the end cover pressing plate, the first groove and the O-shaped ring form the dynamic sealing structure.

Further, first guiding mechanism includes adjusting bolt, bolted connection is passed through in the tip of mounting hole in the outer end of end cover clamp plate, adjusting bolt's head end screw in end cover clamp plate's screw hole and stretch out and contradict with the tip of mounting hole, just lock nut on the adjusting bolt contacts with the end cover clamp plate.

Further, the end cover pressing plate and the static ring are detachably connected, a second groove for accommodating the static ring is formed in the end portion of the end cover pressing plate, contact surfaces between the static ring and the second groove are mutually attached, and a sealing structure is arranged between the static ring and the second groove.

Furthermore, the outer end of the shaft sleeve sleeved on the main shaft is contacted with a disassembling ring sleeved on the main shaft.

Furthermore, the outer side cover plate of the bearing chamber of the mud pump is connected with the shell of the bearing chamber through a second adjusting mechanism, the second adjusting mechanism comprises an adjusting bolt, the outer side cover plate is connected to the end portion of the shell through a bolt, the head end of the adjusting bolt is screwed into the threaded hole of the outer side cover plate and extends out to abut against the end portion of the shell, and a locking nut on the adjusting bolt is in contact with the outer side cover plate.

Further, including lubricating arrangement, lubricating arrangement is including the oilcan that is equipped with lubricated liquid, the end cover clamp plate is provided with a pair of radial extension in order to communicate inlet port and the oil outlet of its hole, the import and the export of oilcan respectively with inlet port and oil outlet union coupling.

Furthermore, an oil seal is arranged between the outer end of the inner hole of the end cover pressing plate and a shaft sleeve sleeved on the main shaft.

Furthermore, the impeller is an open impeller, a vertical rib is added on the outer arc surface of the blade channel of the open impeller, the vertical rib extends along the length direction of the blade channel, and a flow guide groove is formed between the vertical rib and the blade channel;

the casing of impeller both sides is two-layer, and divide into from outside-in and connect apron and wear-resisting welt, and wear-resisting welt is wear-resisting material, connects the apron and is the nodular cast iron material.

In addition, the jet seeder comprises a power system, wherein the power system comprises a main engine and an auxiliary engine, the main engine is used for driving the special single-stage mud pump, and the auxiliary engine is used for driving a stirring device of the jet seeder.

The beneficial technical effects of the utility model are as follows:

compared with the prior art, the special single-stage slurry pump and the spray-seeding machine have different structures and are mainly characterized in that the first adjusting mechanism is used for adjusting the impeller gap, the static ring is adjusted to move axially according to the moving direction of the main shaft when the impeller gap is adjusted, the first adjusting mechanism and the second adjusting mechanism are synchronously performed, so that the position of the mechanical seal is synchronously adjusted along with the impeller gap when the impeller gap is adjusted, the mechanical seal is always in the optimal sealing position, dynamic sealing is realized, the situation that the mechanical seal is pressed too tightly or too loose to cause damage of the mechanical seal due to too tight seal or cannot play a sealing role due to too loose due to the change of the gap between the movable ring and the static ring of the existing mechanical seal is avoided, the service life of the mechanical seal is effectively prolonged, and the effect of the mechanical seal is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic front view, semi-sectional structural view of a single stage mud pump.

Fig. 2 is an enlarged schematic structural view of the pump seal structure shown in fig. 1 at a portion a.

FIG. 3 is a schematic top view of a single stage mud pump.

Fig. 4 is a schematic structural diagram of a spray seeder.

Fig. 5 is a schematic structural view of the impeller.

In the figure: 1. the oil can, 2, the oil inlet hole, 3, the pump shell and 4, the main shaft;

5. an impeller;

501. the leaf path, 502. studs;

6. the oil outlet hole, 7, the end cover pressing plate, 8, the oil seal, 9, the dismounting ring and 10, the static ring;

11. the moving ring, 12, a first groove, 13, a first adjusting mechanism, 14, a spacer bush and 15, a shaft sleeve;

16. bearing chamber, 17, outer cover plate, 18, second adjusting mechanism, 19, stirring device, 20, auxiliary engine;

21. mud pumps, 22 main engine.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1 to 5, a special single-stage slurry pump as a preferred embodiment of the present invention comprises a mechanical seal and a first adjusting mechanism 13, wherein the first adjusting mechanism 13 is used for adjusting the axial movement of a stationary ring 10 of the mechanical seal and limiting the axial movement; it should be noted that, in the slurry pump 21, the main shaft 4, the movable ring 11, and the stationary ring 10 are coaxially disposed, and the movable ring 11 and the stationary ring 10 are both sleeved on the shaft sleeve 15 of the main shaft 4, wherein a connection relationship among the shaft sleeve 15, the main shaft 4, the stationary ring 10, the movable ring 11, the spacer 14, and the impeller 5 is the prior art of the single-stage slurry pump 21, and details are not repeated, and a dynamic seal structure is disposed between the stationary ring 10 and the mounting hole of the upper mounting main shaft 4 of the pump housing 3, the main shaft 4 and the shaft sleeve 15 are all inserted in the mounting hole, and the dynamic seal structure is utilized to move synchronously along the main shaft 4 along with the stationary ring 10, so as to maintain the seal between the stationary ring 10 and the mounting hole, and avoid leakage.

When the special single-stage slurry pump provided by the utility model is applied, the first adjusting mechanism 13 is utilized to adjust the impeller gap, and the static ring is adjusted to move axially according to the moving direction of the main shaft when the impeller gap is adjusted, so that the impeller gap is adjusted synchronously, the position of the mechanical seal is adjusted synchronously along with the impeller gap, the mechanical seal is always in the optimal sealing position, dynamic sealing is realized, and the condition that the mechanical seal is over-tight or over-loose due to the fact that the gap between the movable ring and the static ring of the existing mechanical seal is changed, the mechanical seal is damaged due to over-tight or over-loose, or the sealing function cannot be achieved due to over-tight is avoided, so that the service life of the mechanical seal is effectively prolonged, and the effect of the mechanical seal is improved.

On the basis of the above embodiment, the stationary ring 10 is installed at the end part of the inner end of the end cover pressing plate 7 of the mud pump 21 inserted into the installation hole, and the inner end can move axially along the installation hole, the outer circumference of the inner end of the end cover pressing plate 7 is provided with a first groove 12 which is coaxial and is used for clamping an O-ring, wherein the inner end of the end cover pressing plate 7, the first groove 12 and the O-ring form the dynamic sealing structure, which is equivalent to the dynamic sealing of a piston; the end cover pressing plate and the mounting hole form an adjusting chamber for mounting a mechanical seal, the position of the adjusting chamber is adjusted according to the impeller gap adjusting condition, and the adjusting chamber can be replaced according to the abrasion condition of the O-shaped ring in subsequent work.

More specifically, for using with the above-mentioned movable seal structure, first guiding mechanism 13 includes adjusting bolt, and bolted connection is passed through in the tip of mounting hole in the outer end of end cover clamp plate 7, and adjusting bolt's head end screw in end cover clamp plate 7's screw hole and stretch out and contradict with the tip of mounting hole, and lock nut on the adjusting bolt contacts with end cover clamp plate 7. In actual work, can unscrew the bolt in advance, and loosen lock nut in step, and then move adjusting bolt with the distance between adjustment end cover clamp plate 7 and the mounting hole tip according to impeller 5's clearance adjustment direction through twisting, drive quiet ring 10 axial displacement, and then keep the sealing quality of quiet ring 10 and rotating ring 11, avoid between the two too loose or tension, and after adjusting bolt adjustment is accomplished, screw up locking bolt, with the length that the fixed adjusting bolt head stretches out, then screw up the bolt in order to with the tip fixed connection of end cover clamp plate 7 and mounting hole can.

For better technical effect, on the basis of the above embodiment, the end cover pressing plate 7 and the static ring 10 are detachably connected, so as to replace the damaged static ring 10; the end of the end cover pressing plate 7 is provided with a second groove for accommodating the static ring 10, the contact surfaces between the static ring 10 and the second groove are mutually attached, and a sealing structure is arranged between the static ring 10 and the second groove, wherein the sealing structure can be groove sealing, and the outer circumference of the static ring 10 is provided with a plurality of coaxial circular grooves.

In this embodiment, the outer end of the shaft sleeve 15 sleeved on the main shaft 4 contacts with the dismounting ring 9 sleeved on the main shaft 4, the dismounting ring 9 has a two-plate structure and is tightly connected by a steel wire to form a complete circle, so that the dismounting ring 9 with different widths is used for adjusting the gap of the impeller 5, and the shaft sleeve 15 is axially limited by the dismounting ring 9.

In another embodiment, the outer cover 17 of the bearing chamber 16 of the mud pump 21 is connected to the housing of the bearing chamber 16 through the second adjusting mechanism 18 to adjust the distance between the outer cover 17 and the housing, and can slide axially relative to the main shaft 4, because the outer cover 17 interferes with the bearing in the housing, so that after the outer cover 17 is adjusted, the main shaft 4 can be pushed to move axially to an adjusting position to adjust the clearance of the impeller 5; specifically, the second adjusting mechanism 18 includes an adjusting bolt, the outer side cover plate 17 is connected to the end of the housing through a bolt, the head end of the adjusting bolt is screwed into the threaded hole of the outer side cover plate 17 and extends out to abut against the end of the housing, and a lock nut on the adjusting bolt contacts with the outer side cover plate 17.

On the basis of the above embodiment, the mud pump 21 further includes a lubricating device to reduce the temperature at the mechanical seal, ensure the lubrication between the stationary ring 10 and the moving ring 11, form an oil film, reduce the wear, and facilitate to prolong the service life of the mechanical seal; lubricating arrangement is including the oilcan 1 that is equipped with lubricated liquid, and end cover clamp plate 7 is provided with a pair of radial extension in order to communicate inlet port 2 and the oil outlet 6 of its hole, the import and the export of oilcan 1 respectively with inlet port 2 and 6 union couplings of oil outlet, in addition, the hole outer end of end cover clamp plate 7 and suit are provided with oil blanket 8 between the axle sleeve 15 of main shaft 4, and then prevent that lubricating oil from the outer end of end cover clamp plate 7 from leaking, and when the pump operation, make lubricating oil circulate between hole and oilcan 1 through the vortex of the rotatory production of main shaft 4.

Preferably, the impeller 5 can be selected as a semi-open impeller, which is beneficial to breaking up fiber clusters, the existing fully-open impeller or closed impeller is easy to be entangled and blocked, the improvement is not easy to block, and the lift and the firing range are increased. Specifically, on the basis of the original open impeller, a stud 502 is added to the outer arc surface of the blade duct 501 to enable the blade duct 501 to form a semi-closed state, so that a diversion trench is formed, and materials can smoothly pass through the diversion trench instead of being clamped between the shell and the impeller 5.

The casing of impeller 5 both sides forms the cavity that holds impeller 5 between the casing, is two-layer, and divide into from the extroversion inwards and connect apron and wear-resisting welt, and wear-resisting welt is wear-resisting material, when wear-resisting welt serious wear, only with changing wear-resisting welt to reduce the replacement cost, connect the apron and be nodular cast iron material, increase its toughness, improve life, the aim at of design increases its wear-resisting and toughness, long service life reduces the change frequency, practices thrift the cost.

In addition, the utility model provides a spraying seeder, which comprises a power system, wherein the power system comprises a main engine 22 and an auxiliary engine 20, the main engine 22 is used for driving the special single-stage mud pump 21 in any one of the above claims, and the auxiliary engine 20 is used for driving the stirring device 19 of the spraying seeder, so that the spraying seeder can be started singly, the energy consumption is reduced, the energy is saved, and the waste of resources is reduced; wherein the main engine 22 and the sub-engine 20 are both diesel engines, and wherein the main shaft 4 of the mud pump 21 and the main engine 22 are connected by a belt.

And the whole working principle is as follows: during normal operation, only the auxiliary engine 20 is started for stirring the materials, the speed of the auxiliary engine 20 is reduced after stirring is completed, the stirring speed is reduced, and meanwhile, the main engine 22 is started for spray seeding. After the spray seeding is finished, the main engine 22 is stopped, then the speed of the auxiliary engine 20 is increased again, the materials are stirred, and a cycle is formed, so that the energy consumption is reduced, the energy is saved, and the resource waste is reduced.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The special single-stage mud pump comprises a mechanical seal and is characterized by further comprising a first adjusting mechanism (13), wherein the first adjusting mechanism (13) is used for adjusting a static ring (10) of the mechanical seal to axially move and limit the static ring, a dynamic sealing structure is arranged between the static ring (10) and a mounting hole in a pump shell (3), and the mounting hole is used for enabling a main shaft (4) to penetrate through.

2. The special single stage mud pump as set forth in claim 1, wherein said stationary ring (10) is mounted to an inner end portion of an end cover pressing plate (7) of the mud pump (21) inserted into the mounting hole, and a first groove (12) is coaxially provided on an outer circumference of an inner end of said end cover pressing plate (7) to clamp the O-ring, wherein the inner end of the end cover pressing plate (7), the first groove (12) and the O-ring form said dynamic sealing structure.

3. The dedicated single stage mud pump as set forth in claim 2, wherein said first adjustment mechanism (13) comprises an adjustment bolt, said outer end of said end cap pressure plate (7) is bolted to the end of the mounting hole, the head end of said adjustment bolt is threaded into the threaded hole of the end cap pressure plate (7) and extends out to abut the end of the mounting hole, and a locking nut on said adjustment bolt contacts the end cap pressure plate (7).

4. The special single-stage mud pump as set forth in claim 2, wherein said end cap pressure plate (7) and said stationary ring (10) are detachably connected, a second groove for receiving said stationary ring (10) is provided at an end portion of said end cap pressure plate (7), contact surfaces between said stationary ring (10) and said second groove are engaged with each other, and a sealing structure is provided between said stationary ring and said second groove.

5. -specific single-stage slurry pump according to claim 3, characterized in that the sleeve (15) fitted on the main shaft (4) is in contact with the removal ring (9) fitted on the main shaft (4).

6. The dedicated single stage mud pump as set forth in claim 1, wherein the outer shroud (17) of the bearing housing (16) of the mud pump (21) is connected to the housing of the bearing housing (16) by a second adjustment mechanism (18), said second adjustment mechanism (18) comprising an adjustment bolt, said outer shroud (17) being bolted to the end of the housing, the head end of said adjustment bolt being threaded into a threaded bore in the outer shroud (17) and protruding to abut the end of the housing, and a locking nut on said adjustment bolt contacting the outer shroud (17).

7. The special single-stage mud pump as set forth in claim 3, comprising a lubricating device, wherein the lubricating device comprises an oil can (1) filled with lubricating liquid, the end cover pressing plate (7) is provided with a pair of oil inlet holes (2) and oil outlet holes (6) which extend radially and communicate with the inner hole of the end cover pressing plate, and the inlet and the outlet of the oil can (1) are respectively connected with the oil inlet holes (2) and the oil outlet holes (6) through pipes.

8. The special single-stage mud pump as set forth in claim 7, wherein an oil seal (8) is provided between the outer end of the inner bore of the end cover pressure plate (7) and a sleeve (15) fitted over the main shaft (4).

9. The special single-stage mud pump as set forth in claim 1, wherein the impeller (5) is an open impeller, and a stud (502) is added to the outer arc surface of the blade channel (501) of the open impeller, and the stud (502) extends along the length direction of the blade channel (501), so that a diversion trench is formed between the stud (502) and the blade channel (501);

the shells on the two sides of the impeller (5) are two-layer, and are divided into a connecting cover plate and a wear-resistant lining plate from outside to inside, the wear-resistant lining plate is made of wear-resistant materials, and the connecting cover plate is made of nodular cast iron.

10. A jet seeder comprising a power system, characterized in that said power system comprises a main engine (22) for driving the dedicated single-stage mud pump (21) of any one of the preceding claims 1 to 9, and a secondary engine (20) for driving the stirring means (19) of the jet seeder.

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