CN110107507B - Axial flow pump with long service life - Google Patents
Axial flow pump with long service life Download PDFInfo
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- CN110107507B CN110107507B CN201910441549.7A CN201910441549A CN110107507B CN 110107507 B CN110107507 B CN 110107507B CN 201910441549 A CN201910441549 A CN 201910441549A CN 110107507 B CN110107507 B CN 110107507B
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- sleeve
- groove
- plate
- flow pump
- sliding
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 210000004907 gland Anatomy 0.000 claims description 29
- 238000007789 sealing Methods 0.000 claims description 23
- 230000006835 compression Effects 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
- 239000004519 grease Substances 0.000 claims description 5
- 230000001050 lubricating effect Effects 0.000 claims description 5
- 241000196324 Embryophyta Species 0.000 abstract description 7
- 230000009471 action Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 244000058871 Echinochloa crus-galli Species 0.000 description 1
- 235000015225 Panicum colonum Nutrition 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/181—Axial flow rotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D3/00—Axial-flow pumps
- F04D3/005—Axial-flow pumps with a conventional single stage rotor
Abstract
The invention provides an axial flow pump with long service life, which comprises a water inlet pipe arranged at the lower end of an axial flow pump body, wherein a filter screen sleeve is arranged in the water inlet pipe, a filter screen sleeve is arranged at the upper part of the filter screen sleeve, a middle sleeve body and a lower fixing plate, a first sleeve pipe is arranged in the axial direction of the filter screen sleeve, a first through hole is formed in the lower fixing plate, a movable component is arranged in the first through hole, the movable component comprises a sliding plate and a movable plate hinged at the edge of the lower fixing plate, the sliding plate is in sliding connection with the movable plate, the edge of the movable plate is matched with the edge of the first through hole, an arc-shaped groove matched with the shape of the first sleeve pipe is formed in the sliding plate, a torsion spring is arranged between the movable plate and the lower fixing plate, the bottom of the first sleeve pipe is connected to the inner wall of the water inlet pipe through a plurality of brackets, a first rotating shaft is rotatably arranged in the first sleeve pipe, the first rotating shaft comprises an exposed end exposed at the bottom end of the first sleeve pipe, and a plurality of blades are circumferentially arranged at the exposed end. The axial flow pump can collect aquatic weeds or garbage, and has long service life.
Description
Technical Field
The invention relates to the field of axial flow pumps, in particular to an axial flow pump with long service life.
Background
A patent named as an axial flow pump for sewage treatment equipment is disclosed in the Chinese database, and has the application number of CN201811085420.9, the application date of 2018.09.18, the publication number of CN108843581A and the publication date of 2018.11.20. This kind of axial-flow pump for sewage treatment device, including the axial-flow pump body, fixed mounting has same dead lever on the both sides inner wall of axial-flow pump body, and the dwang is installed in the upside rotation of dead lever, and the top fixed mounting of dwang has the frame of placing, the upside fixed mounting of axial-flow pump body has the fixed frame, and fixed mounting has the rotating electrical machines on the upside inner wall of fixed frame, and the output shaft of rotating electrical machines has the axis of rotation through shaft coupling fixed mounting, and the bottom of axis of rotation extends to the inside that is located the frame of placing of axial-flow pump body, the recess has been seted up on the downside inner wall of placing the frame, and the bottom rotation of axis of rotation is installed in the recess. The water grass and other garbage in the river can be wound on the rotating shaft, the guide vane or the impeller in the axial flow pump to influence the use effect of the axial flow pump and reduce the service life of the axial flow pump according to different use environments of the axial flow pump although pollutants accumulated on the inner walls of the two sides of the axial flow pump can be cleaned.
Disclosure of Invention
In view of the above, the invention provides the axial flow pump capable of cutting and collecting the garbage in the river such as water plants, and the like, which avoids winding on the rotating shaft, the guide vane or the impeller of the axial flow pump, and prolongs the service life of the axial flow pump.
To achieve the above object, the present invention discloses an axial flow pump having a long service life, comprising: the axial flow pump body 1 provided with a straight pipe end and a bent pipe end is arranged in the axial direction of the straight pipe end, the rotating shaft 2 is rotatably connected with the axial flow pump body 1 and extends out of the axial flow pump body 1, the lower end of the rotating shaft 2 is sequentially connected with the guide vane 3 and the impeller 4 from top to bottom, the lower end of the straight pipe end is connected with the water inlet pipe 5, the inside of the water inlet pipe 5 is provided with the filter screen sleeve 6 with a hollow inside, the filter screen sleeve 6 comprises an upper filter screen 7, a middle sleeve body 8 and a lower fixing plate 9 which are sequentially connected, a first sleeve pipe 10 is arranged in the axial direction of the filter screen sleeve 6, a first through hole 29 is formed in the middle of the lower fixing plate 9, the bottom of the first sleeve pipe 10 penetrates through and extends out of the first through hole 29, a plurality of movable components for closing the first through hole 29 are arranged in the first through hole 29, the movable assembly comprises a sliding plate 12 and a movable plate 11 hinged to the edge of the lower fixed plate 9, the sliding plate 12 is connected with one end of the movable plate 11, which is close to the first sleeve, an elastic body 13 is arranged between the sliding plate 12 and the movable plate 11 and is used for applying acting force far away from the movable plate 11 to the sliding plate 12 along the sliding direction of the sliding plate 12, a limiting device is also arranged between the sliding plate 12 and the movable plate 11, the edges of the movable plates 11 in the movable assemblies are matched with the edge of the first through hole, an arc-shaped groove matched with the shape of the first sleeve is formed at one end of the sliding plate 12, which is close to the first sleeve, a torsion spring 21 is arranged between the movable plate 11 and the lower fixed plate 9 and is used for enabling the movable assemblies to be closed to form a whole body for sealing the first through hole, the bottom of the first sleeve is connected to the inner wall of the water inlet pipe 5 through a plurality of supports 22, a first rotating shaft 23 is rotatably installed in the first sleeve, the first rotating shaft 23 comprises an exposed end exposed out of the bottom end of the first sleeve, a plurality of blades 24 are uniformly distributed in the circumferential direction of the exposed end, the blades are obliquely distributed along the axial direction of the first rotating shaft 23, and the cutting edges of the blades are downward.
The invention has the beneficial effects that: after the axial flow pump is started, the first rotating shaft 23 rotates under the action of water flow to drive the blade to rotate, and the blade is used for cutting impurities such as aquatic plants or garbage; meanwhile, the movable assembly turns upwards, impurities cut into small blocks enter the filter screen sleeve, the filter screen sleeve is utilized to filter the impurities, the impurities are prevented from entering the axial flow pump body and winding on the rotating shaft, the guide vane or the impeller, normal operation of the axial flow pump is guaranteed, and the service life is prolonged.
The axial flow pump with long service life is further improved in that a fixed seat 25 is arranged on the upper end face of the movable plate 11, a second sleeve 27 is fixedly arranged on the lower fixed plate, a second rotating shaft 26 is rotatably arranged on the fixed seat, the end part of the second rotating shaft 26 is rotatably inserted into the second sleeve 27, the torsion spring 21 is sleeved on the second rotating shaft 26, the first end of the torsion spring 21 is propped against the movable plate 11, and the second end of the torsion spring 21 is propped against the lower fixed plate. Through setting up torsional spring 21 between fly leaf 11 and lower part fixed plate, when axial-flow pump closed the back, the movable component is closed under the effect of torsional spring 21 reset force, avoids adsorbing impurity in the filter screen cover and drops, has realized the collection to pasture and water or rubbish.
The axial flow pump with long service life is further improved in that annular grooves for placing bearings are formed at two ends of a first sleeve respectively, the first rotating shaft 23 is rotatably installed in the first sleeve through the bearings, a shaft shoulder is formed at the first end of the first rotating shaft 23, a first bearing is distributed between the shaft shoulder and the annular grooves, the bottom end of the shaft shoulder is attached to the inner ring end face of the corresponding bearing, a hemispherical lower circular arc groove is formed in the upper end face of the shaft shoulder, a matched ball 33 is placed in the lower circular arc groove, a first gland 34 is connected to the top end of the shaft shoulder, an upper circular arc through groove which is matched with the ball 33 and has a radius smaller than that of the ball 33 is formed on the first gland, the top end of the ball 33 penetrates through and is exposed out of the upper circular arc through groove, a second gland 35 is connected to the first end face of the first sleeve, a groove 36 which is matched with the top end of the ball 33 is formed at the lower end face of the second gland 35, a spherical lower circular arc groove 33 is formed in the upper end face of the shaft shoulder, a matched with the first sleeve, a third sleeve is arranged between the first sealing sleeve and the third sealing sleeve 37 is arranged at the bottom end face of the third sleeve, a third sealing sleeve 37 is arranged between the third sealing sleeve and the third sealing sleeve 37 is arranged at the third sealing sleeve, and the third sealing sleeve is arranged between the third sealing sleeve and the third sealing sleeve. By adopting the structure, the first bearing is accurately positioned, and meanwhile, the running stability of the first bearing is ensured.
The axial flow pump with long service life is further improved in that a gap is formed between the ball body 33 and the upper circular arc through groove and between the ball body 33 and the lower circular arc through groove, lubricating grease is coated in the gap, and a fourth sealing piece is arranged between the upper circular arc through groove and the ball body. Further realizing radial and axial limit of the first rotating shaft 23, and ensuring the mounting precision of the first bearing.
The axial flow pump with long service life is further improved in that a plurality of radially arranged reinforcing strips 39 are radially arranged on the upper filter screen, a first end of each reinforcing strip 39 is connected with the first sleeve, and a second end of each reinforcing strip is connected with the middle sleeve body 8. Through setting up the strengthening strip, improve holistic structural strength of upper portion filter screen.
The axial flow pump with long service life is further improved in that one end of the movable plate 11, which is close to the first sleeve, is provided with a sliding groove 14 for the sliding plate 12 to slide, a plurality of positioning columns 15 are distributed in the length direction of the groove bottom of the sliding groove 14, guide holes 16 which are arranged along the opening direction of the sliding groove are formed in the positioning columns, guide columns 17 which are aligned and matched with the guide holes are formed in the sliding plate 12, the elastic body 13 is a compression spring, the first end of the compression spring is sleeved on the positioning columns 15, and the second end of the compression spring is sleeved on the guide columns 17. By arranging the compression springs between the sliding plate 12 and the movable plate 11, it can be ensured that the arc-shaped grooves of the sliding plate 12 are attached to the outer wall of the first sleeve when the axial flow pump is stopped.
The invention has the further improvement that the limiting device comprises a threaded hole formed in the movable plate, a limiting groove 19 formed in the sliding plate 12 and a screw-connection piece 18 screwed into the threaded hole and extending into the limiting groove 19, wherein the limiting groove 19 is distributed along the sliding direction of the sliding plate 12, and the movable plate 11 is provided with the threaded hole corresponding to the limiting groove 19. Limiting of the movable plate 11 is achieved through the screw connection piece 18, the sliding plate 12 is prevented from shifting in the use process, and sealing of the first through hole when the axial flow pump is stopped cannot be achieved.
Drawings
Fig. 1 is a schematic structural view of an axial flow pump according to the present invention.
FIG. 2 is an enlarged schematic view of the internal structure of the water inlet pipe in the invention.
Fig. 3 is a schematic view of the structure of the movable assembly in the present invention.
Fig. 4 is an enlarged schematic view at a in fig. 3.
Fig. 5 is an enlarged schematic view at B in fig. 2.
Fig. 6 is an enlarged schematic view at C in fig. 2.
Fig. 7 is an enlarged schematic view at D in fig. 2.
Fig. 8 is a schematic view of the structure of the upper filter screen in the present invention.
Detailed Description
In order to facilitate the understanding of the present invention, the following description is provided with reference to the drawings and examples.
Referring to fig. 1 to 6, the invention discloses an axial flow pump with long service life, which comprises an axial flow pump body 1 provided with a straight pipe end and a bent pipe end, wherein a rotating shaft 2 is axially arranged at the straight pipe end, the upper end of the rotating shaft 2 is rotationally connected with the axial flow pump body 1 and extends out of the axial flow pump body 1, and a guide vane 3 and an impeller 4 are sequentially connected from top to bottom at the lower end of the rotating shaft 2; the lower end of the straight pipe is connected with a water inlet pipe 5, the inside of the water inlet pipe 5 is provided with a filter screen sleeve 6 with a hollow inside, the filter screen sleeve 6 comprises an upper filter screen 7, a middle sleeve body 8 and a lower fixed plate 9 which are connected in sequence, a first sleeve pipe 10 is arranged in the axial direction of the filter screen sleeve 6, a first through hole 29 is arranged in the middle of the lower fixed plate 9, the bottom of the first sleeve pipe 10 penetrates through and extends out of the first through hole 29, a plurality of movable components for closing the first through hole 29 are arranged in the first through hole 29, each movable component comprises a sliding plate 12 and a movable plate 11 hinged at the edge of the lower fixed plate 9, the sliding plate 12 is connected with one end of the movable plate 11 close to the first sleeve pipe in a sliding way, an elastic body 13 is arranged between the sliding plate 12 and the movable plate 11 and is used for applying acting force far away from the movable plate 11 to the sliding plate 12 along the sliding direction of the sliding plate 12, still be equipped with stop device between fly leaf 12 and fly leaf 11, the border of fly leaf 11 in a plurality of fly leaf assemblies matches in the border of first through-hole 29, the arc wall 20 with first sleeve pipe 10 appearance assorted is seted up to the one end that is close to of fly leaf 12, be equipped with torsional spring 21 between fly leaf 11 and the lower part fixed plate 9, be used for making a plurality of fly leaf assemblies closed form a whole that seals first through-hole, the bottom of first sheathed tube is connected in the inner wall of inlet tube 5 through many supports 22, first pivot 23 is installed in the first sleeve pipe 10 in the rotation, first pivot 23 is including exposing in the exposing end of the bottom of first sleeve pipe 10, a plurality of blades 24 have evenly been laid to the circumference of exposing end, the blade 24 is laid along the axial slope of first pivot 23, the cutting edge of blade 24 sets up down. In the embodiment, (1) collection of aquatic weeds or garbage can be realized by arranging the filter screen sleeve 6 with hollow inside, so that the influence on the normal operation of the axial flow pump caused by entering the axial flow pump body 1 is avoided; (2) By obliquely arranging the blades 24 along the axial direction of the first rotating shaft 23, when the axial flow pump works normally, the blades 24 are driven by the acting force of water flow to rotate the first rotating shaft 23, and at the moment, the blades 24 rotating at high speed can cut aquatic plants and garbage in water into small blocks so as to avoid blocking the water inlet pipe 5; (3) The first through hole 29 is closed through the movable assembly, when the axial flow pump is stopped, the movable assembly closes the first through hole 29 under the action of the torsion spring 21, the sliding plate 12 in the movable assembly is attached to the outer edge of the first sleeve 10 under the action of the elastic body 13, water plants or garbage in the filter sleeve net 6 are prevented from falling, and the collection of the water plants or garbage is realized. Specifically, (1) the middle sleeve body 8 is in a ring shape; (2) The filter screen cover 6 is detachably mounted in the water inlet pipe 5, and the connection structure between the filter screen cover 6 and the water inlet pipe 5 is not described in detail in this embodiment, and reference is specifically made to the prior art.
Further, the upper end face of the movable plate 11 is provided with a fixed seat 25, the lower fixed plate 9 is fixedly provided with a second sleeve 27, a second rotating shaft 26 is rotatably installed in the fixed seat 25, the end part of the second rotating shaft 26 is rotatably inserted into the second sleeve 27, the torsion spring 21 is sleeved on the second rotating shaft 26, the first end of the torsion spring 21 is supported on the movable plate 11, and the second end of the torsion spring 21 is supported on the lower fixed plate 9. In this embodiment, when the axial flow pump is in normal operation, the movable plate 11 is turned upwards under the action of the water flow pressure, the torsion spring 21 is compressed at this time, and after the axial flow pump is stopped, the movable plate 11 is restored to the initial position (i.e. the position where the movable assembly closes the first through hole) under the action of the restoring force of the torsion spring 21, so as to close the first through hole.
Further, annular grooves for placing bearings are formed at two ends of the first sleeve respectively, the first rotating shaft 23 is rotatably installed in the first sleeve through the bearings, a shaft shoulder is formed at the first end of the first rotating shaft 23, a bearing is distributed between the shaft shoulder and the annular grooves, the bottom end of the shaft shoulder is attached to the end face of an inner ring of the corresponding bearing, a hemispherical lower circular arc groove is formed in the upper end face of the shaft shoulder, a matched sphere 33 is placed in the lower circular arc groove, a first gland 34 is connected to the top end of the shaft shoulder, an upper circular arc through groove which is matched with the sphere 33 and has a radius smaller than that of the sphere 33 is formed in the first gland, the top end of the sphere 33 penetrates through and is exposed out of the upper circular arc through groove, a second gland 35 is connected to the end face of the first end of the first sleeve, which corresponds to the shaft shoulder, the lower terminal surface of second gland 35 is formed with the circular arc groove 36 that matches sphere 33 top, the top of sphere 33 sets up in circular arc groove 26 and with the tank bottom clearance fit in circular arc groove 26, be provided with first sealing member between second gland 35 and the first sleeve pipe 10, the bottom of first sleeve pipe 10 is connected with third gland 37, third gland 37 and first sleeve pipe 10 have laid another bearing and have pressed against another bearing, third gland 37 top is pressed against the outer lane terminal surface of another bearing, be equipped with the second sealing member between third gland 37 and the first sleeve pipe 10 lower terminal surface, set up the third through-hole 38 that supplies first pivot 23 to wear to establish on the third gland 37, be equipped with the third sealing member between third through-hole 38 and the first pivot 23. In this embodiment, the accurate positioning of the first end bearing of the first rotating shaft 23 is realized by setting the shaft shoulder, the first gland 34, the second gland 35 and the ball 33, and the accurate positioning of the second end bearing of the first rotating shaft 23 is realized by setting the third gland, so that the installation accuracy of the first rotating shaft 23 is ensured, the offset in the rotating process is avoided, and the noise in the running process of the axial flow pump is reduced.
Furthermore, a gap (clearance fit) is formed between the ball 33 and the upper circular arc through groove and between the ball 33 and the lower circular arc through groove, lubricating grease is coated in the gap, and a fourth sealing element is arranged between the upper circular arc through groove and the ball 33. Specifically, through with the clearance fit and scribble lubricating grease between spheroid 33 and last circular arc logical groove and the lower circular arc groove, can guarantee the rolling smoothness of spheroid 33 in the rotation process of first pivot 23, through laying fourth sealing member, guarantee the abundant lubrication of sealing connection and spheroid 33 each other, avoid lubricating grease to reveal or water gets into in the clearance.
Further, a sliding groove 14 for sliding the sliding plate 12 is formed in one end, close to the first sleeve, of the movable plate 11, a plurality of positioning columns 15 are distributed in the length direction of the groove bottom of the sliding groove 14, guide holes 16 formed in the opening direction of the sliding groove 14 are formed in the positioning columns 15, guide columns 17 aligned with and matched with the guide holes 16 are formed in the sliding plate 12, the elastic body 13 is a compression spring, a first end of the compression spring is sleeved on the positioning columns 15, and a second end of the compression spring is sleeved on the guide columns 17. In this embodiment, by arranging the compression springs between the sliding plate 12 and the movable plate 11, it is ensured that the sliding plate 12 is attached to the outer wall of the first sleeve 10 under the action of the compression springs when the axial flow pump is stopped, and the first through hole 29 is ensured to be closed; by aligning the guide posts 17 with the guide holes 16 to guide the sliding plate 12, the sliding plate 12 is prevented from shifting during sliding; specifically, one end of the guide post 17 is inserted into the guide hole 16.
Still further, the limiting device comprises a threaded hole formed in the movable plate 11, a limiting groove 19 formed in the sliding plate 12, and a screw member 18 screwed into the threaded hole and extending into the limiting groove 19, wherein the limiting groove 19 is arranged along the sliding direction of the sliding plate 12, and the movable plate 11 is provided with a threaded hole corresponding to the limiting groove 19. In this embodiment, the movable plate 11 is limited by the screw connection member 18, so as to avoid the technical problem that the movable plate 12 in the adjacent movable assembly is dislocated due to the displacement of the movable plate 12 in the length direction of the sliding groove 14, and the first through hole 29 cannot be closed.
In the invention, a plurality of radially arranged reinforcing strips 39 (shown in fig. 7) are radially arranged on the upper filter screen 7, the first ends of the reinforcing strips 39 are connected with the first sleeve 10, and the second ends of the reinforcing strips 39 are connected with the middle sleeve 8; by laying the reinforcing strips 39, the structural strength of the upper filter screen is improved.
In the present invention, the axial direction of the first sleeve 10, the axial direction of the first through hole 29, and the axial direction of the first rotary shaft 23 are collinear.
The axial flow pump with long service life has the beneficial effects that:
1. through the bottom installation blade at first pivot, realize cutting pasture and water or rubbish when axial-flow pump starts the effect, avoid blockking up the inlet tube, can realize retrieving pasture and water and rubbish through laying the filter screen cover in the inlet tube, avoid entering winding in the axial-flow pump body on axis of rotation, guide vane or impeller, influence axial-flow pump's normal work, prolonged axial-flow pump's life.
2. Through be equipped with the torsional spring between the fly leaf with set up compression spring between fly leaf and sliding plate, when can guarantee that axial-flow pump is shut down, the fly leaf resumes initial position under the effect of torsional spring reset force, and the sliding plate laminating is in first sheathed tube outer wall under compression spring's effect, realizes the closure to first through-hole, avoids pasture and water or rubbish whereabouts that the filter screen cover was collected.
3. By adopting the ball structures of the first gland, the second gland and the third capping machine, the accurate positioning (including axial positioning and radial positioning) of the first rotating shaft can be realized.
4. The axial flow pump has simple structure, better adaptability and longer service life.
The present invention is not limited to the above embodiments, but is capable of modification and variation in all aspects, including those of ordinary skill in the art, without departing from the spirit and scope of the present invention.
It should be noted that, the structures, proportions, sizes and the like shown in the drawings attached to the present specification are used for understanding and reading only in conjunction with the disclosure of the present specification, and are not intended to limit the applicable limitations of the present invention, so that any structural modification, change of proportion or adjustment of size is not technically significant, and all fall within the scope of the technical disclosure without affecting the efficacy and achievement of the present invention.
Claims (5)
1. The utility model provides an axial-flow pump of long service life, is including being equipped with the axial-flow pump body of straight pipe end and curved pipe end, the axial of straight pipe end is provided with the axis of rotation, the axis of rotation upper end is connected with the axial-flow pump body rotation and stretches out in the outside of axial-flow pump body, the axis of rotation lower extreme has connected gradually guide vane and impeller from last to down, its characterized in that: the lower end of the straight pipe end is connected with a water inlet pipe, the inside of the water inlet pipe is provided with an internally hollow filter screen sleeve, the filter screen sleeve comprises an upper filter screen, a middle sleeve body and a lower fixing plate which are sequentially connected, a first sleeve is arranged in the axial direction of the filter screen sleeve, a first through hole is formed in the middle of the lower fixing plate, the bottom of the first sleeve penetrates through and extends out of the first through hole, a plurality of movable components for closing the first through hole are arranged in the first through hole, each movable component comprises a sliding plate and a movable plate hinged to the edge of the lower fixing plate, the sliding plate is connected with one end, close to the first sleeve, of the movable plate in a sliding manner, an elastic body is arranged between the sliding plate and the movable plate and is used for applying acting force away from the movable plate to the sliding plate along the sliding direction of the sliding plate, a limiting device is also arranged between the sliding plate and the movable plate, the edges of the movable plates in the movable assemblies are matched with the edges of the first through holes, one end of the sliding plate, which is close to the first sleeve, is provided with an arc-shaped groove matched with the shape of the first sleeve, a torsion spring is arranged between the movable plate and the lower fixed plate, the movable assembly is used for closing a plurality of movable assemblies to form a whole for sealing the first through hole, the bottom of the first sleeve is connected with the inner wall of the water inlet pipe through a plurality of brackets, a first rotating shaft is rotatably arranged in the first sleeve and comprises an exposed end exposed out of the bottom end of the first sleeve, a plurality of blades are uniformly distributed in the circumferential direction of the exposed end, the blades are obliquely distributed along the axial direction of the first rotating shaft, the cutting edge of the blade is arranged downwards; the upper end face of the movable plate is provided with a fixed seat, the lower fixed plate is fixedly provided with a second sleeve, the fixed seat is rotatably provided with a second rotating shaft, the end part of the second rotating shaft is rotatably inserted into the second sleeve, the torsion spring is sleeved on the second rotating shaft, the first end of the torsion spring is propped against the movable plate, and the second end of the torsion spring is propped against the lower fixed plate; the two ends of the first sleeve are respectively provided with an annular groove used for placing a bearing, the first rotating shaft is rotatably arranged in the first sleeve through the bearing, the first end of the first rotating shaft is provided with a shaft shoulder, a bearing is arranged between the shaft shoulder and the annular groove, the bottom end of the shaft shoulder is attached to the end face of the inner ring of the corresponding bearing, the upper end face of the shaft shoulder is provided with a hemispherical lower circular arc groove, a matched sphere is arranged in the lower circular arc groove, the top end of the shaft shoulder is connected with a first gland, an upper circular arc through groove which is matched with the sphere and has a radius smaller than the radius of the sphere is arranged on the first gland, the top end of the sphere passes through and is exposed out of the upper circular arc through groove, the first sleeve is connected with a second gland corresponding to the first end face of the shaft shoulder, the lower end face of the second gland is provided with an arc groove matched with the top end of the sphere, the top end of the sphere is arranged in the arc groove and in clearance fit with the groove bottom of the arc groove, a first sealing element is arranged between the second gland and the first sleeve, the bottom end of the first sleeve is connected with a third gland, another bearing is arranged between the third gland and the first sleeve, the third gland abuts against the outer ring end face of the other bearing, the lower end faces of the third gland and the first sleeve are provided with second sealing elements, a third through hole for the first rotating shaft to penetrate is formed in the third gland, and a third sealing element is arranged between the third through hole and the first rotating shaft.
2. The long life axial flow pump of claim 1, wherein: a gap is formed between the ball body and the upper circular arc through groove and between the ball body and the lower circular arc through groove, lubricating grease is coated in the gap, and a fourth sealing piece is arranged between the upper circular arc through groove and the ball body.
3. The long life axial flow pump of claim 1, wherein: the upper filter screen radially is provided with a plurality of radially arranged reinforcing strips, the first ends of the reinforcing strips are connected with the first sleeve, and the second ends of the reinforcing strips are connected with the middle sleeve body.
4. The long life axial flow pump of claim 1, wherein: the movable plate is close to one end of the first sleeve is provided with a sliding groove for sliding the sliding plate, the length direction of the bottom of the sliding groove is provided with a plurality of positioning columns, the positioning columns are provided with guide holes which are arranged along the opening direction of the sliding groove, the sliding plate is provided with guide columns which are aligned and matched with the guide holes, the elastic body is a compression spring, the first end of the compression spring is sleeved on the positioning columns, and the second end of the compression spring is sleeved on the guide columns.
5. The long life axial flow pump of claim 4, wherein: the limiting device comprises a threaded hole formed in the movable plate, a limiting groove formed in the sliding plate and a threaded piece which is in threaded connection with the threaded hole and stretches into the limiting groove, the limiting groove is formed in the sliding direction of the sliding plate, and the movable plate is provided with the threaded hole corresponding to the limiting groove.
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| CN114263639B (en) * | 2021-12-29 | 2022-11-15 | 高邮环流泵业有限公司 | Large-scale axial-flow pump convenient to maintain |
| CN117450085B (en) * | 2023-12-26 | 2024-03-26 | 三联泵业股份有限公司 | Wear-resistant foam pump for conveying thick slurry |
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