CN209164167U - A kind of seal structure for centrifugal pump - Google Patents
A kind of seal structure for centrifugal pump Download PDFInfo
- Publication number
- CN209164167U CN209164167U CN201822063320.8U CN201822063320U CN209164167U CN 209164167 U CN209164167 U CN 209164167U CN 201822063320 U CN201822063320 U CN 201822063320U CN 209164167 U CN209164167 U CN 209164167U
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- Prior art keywords
- seal
- ring
- centrifugal pump
- wedge
- wedge shape
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- 238000007789 sealing Methods 0.000 claims abstract description 28
- 238000005086 pumping Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 239000007770 graphite material Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005119 centrifugation Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 abstract 1
- 238000005192 partition Methods 0.000 description 15
- 239000010865 sewage Substances 0.000 description 13
- 239000012535 impurity Substances 0.000 description 10
- 108020004638 Circular DNA Proteins 0.000 description 4
- 230000003172 anti-dna Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a kind of seal structure for centrifugal pump, belong to centrifugation pump technical field, including the pump housing, pumping motor and seal assembly, it is characterised in that: the seal assembly includes end ring, wedge shape pressure ring, wedge-type seal circle and backing plate；One end of the pump housing offers cylindrical seal chamber, and the output shaft of pumping motor is arranged across seal chamber；The end ring, wedge shape pressure ring, wedge-type seal circle and backing plate are successively set in seal chamber, and backing plate is resisted against the bottom end of seal chamber, and end ring is detachably connected on the open end of seal chamber；The wedge-type seal circle includes exterior seal ring and inner seal ring, and outer inclined-plane and outer inclined-plane are V-shaped, and the wedge shape pressure ring is inserted between exterior seal ring and inner seal ring.The beneficial effects of the utility model are: sealing is realized and applying pressure external force to wedge shape pressure ring, sealed reliable, and can guarantee sealing reliability by fastening end ring, it is convenient for later maintenance, effectively improves the service life of centrifugal pump.
Description
Technical field
The utility model relates to be centrifuged pump technical field, more particularly to a kind of seal structure for centrifugal pump.
Background technique
Centrifugal pump is to be rotated using impeller and make water that centrifugal movement occur come work.Water pump is before activation, it is necessary to make to pump
It is full of water in shell and suction hose, then starts motor, pump shaft impeller and water is made to do high speed rotary motion, centrifugation fortune occurs for water
It is dynamic, it is thrown toward impeller outer edge, the runner through volute pump case flows into the pressure pipe road of water pump.
Centrifugal pump is commonly used for sewage pump, mainly for delivery of municipal sewage, fiber is contained in excrement or liquid, paper scrap etc. is solid
The medium of body particle is typically transported the temperature of medium no more than 80 DEG C.Due to containing easily winding in transported medium or gathering
The fibre object of beam, therefore this kind pump runner is easy to block, pump, which is once blocked, can make to pump cisco unity malfunction, or even burn motor,
To cause blowdown unsmooth.Serious influence is brought to urban life and environmental protection.Therefore, anti-blocking is the important of centrifugal pump superiority and inferiority
Factor.
Frequently with motor as power original part, the output shaft of motor needs to extend into inner cavity across the pump housing centrifugal pump, and defeated
Shaft high speed rotation, this proposes very high requirement to the sealing between output shaft and the pump housing, and current sealing structure is unreliable.
In view of the above-mentioned problems, present applicant proposes solutions.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of seal structure for centrifugal pump, solve
Seal insecure technical problem.
The purpose of this utility model is achieved through the following technical solutions: a kind of seal structure for centrifugal pump, including
The pump housing, pumping motor and seal assembly, it is characterised in that: the seal assembly include end ring, wedge shape pressure ring, wedge-type seal circle and
Backing plate；One end of the pump housing offers cylindrical seal chamber, and the output shaft of pumping motor is arranged across seal chamber；The end
Ring, wedge shape pressure ring, wedge-type seal circle and backing plate are successively set in seal chamber, and backing plate is resisted against the bottom end of seal chamber, end ring
It is detachably connected on the open end of seal chamber；The wedge-type seal circle includes exterior seal ring and inner seal ring, and exterior seal ring
Inner wall is outer inclined-plane, and the outer wall of inner seal ring is outer inclined-plane, and outer inclined-plane and outer inclined-plane are V-shaped, and the wedge shape pressure ring is inserted in outer close
Between seal and inner seal ring, the end ring is resisted against the end face of wedge shape pressure ring.
Preferably, it is connected through a screw thread between the end ring and the pump housing.
Preferably, the end of the end ring offers spanner mouth.
Preferably, there are gaps between the wedge shape pressure ring and backing plate.
Preferably, the gap is 0.5mm~2mm.
Preferably, the bevel angle of the exterior seal ring is 10 °~30 °, the bevel angle of inner seal ring and exterior seal ring
It is equal.
Preferably, the bottom of the seal chamber is the first protrusion, is provided with the first sealing between the first protrusion and output shaft
Circle.
Preferably, the second protrusion is provided in the pump housing, the second protrusion is arranged with the first bulge clearance, and the second protrusion
The second sealing ring is provided between output shaft.
Preferably, the material of first sealing ring and the second sealing ring is PTFE.
Preferably, the exterior seal ring and inner seal ring are all made of graphite material.
The beneficial effects of the utility model are:
It is applied to wedge shape pressure ring extruding force by end ring, wedge shape pressure ring squeezes wedge-type seal circle by inclined-plane, so that outer close
The outer wall of seal is tightly abutted against the inner wall of seal chamber, and the inner wall of inner seal ring is tightly abutted against on the output shaft of pumping motor,
Seal chamber is fully sealed, prevents sewage from oozing out out of the pump housing, structure is simple, and is to force external force by applying to wedge shape pressure ring
And realize sealing, sealed reliable, and can guarantee sealing reliability by fastening end ring is convenient for later maintenance, effectively improve from
The service life of heart pump.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the best embodiment of the utility model；
Fig. 2 is the structural schematic diagram of centrifugal pump main body；
Fig. 3 is the portion A detail drawing in Fig. 1；
Fig. 4 is the structural schematic diagram for adjusting component；
In figure: the 11- pump housing, 12- draw water chamber, 13- drainage cavity, 14- pump mouth, 15- discharge outlet, 16- partition, 17- first
Break bar, 18- flush pipe, the first valve of 19-,
21- booster pump, 22- pumping motor, 23- drain motor, 24- pumping impeller, 25- water impeller, 26- baffle, 27-
U-shaped channel, 28- first motor, the second break bar of 29-,
The second motor of 31-, 32- sewage pipe, the second valve of 33-,
41- end ring, 42- wedge shape pressure ring, 43- backing plate, 44- exterior seal ring, 45- inner seal ring, the first protrusion of 46-, 47- are defeated
Shaft, the first sealing ring of 48-, the second protrusion of 49-,
The second sealing ring of 51-, 52- bottom plate, 53- support plate, 54- mounting base, 55- strut, 56- mounting hole, 57- spring,
58- adjusting set, 59- sleeve, the anti-DNA releaxed circular DNA of 61-.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing, to this reality
With novel further description.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than complete
The embodiment in portion.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Every other embodiment obtained is put, is fallen within the protection scope of the utility model.
As shown in Figure 1 to 4, a kind of seal structure for centrifugal pump, it is characterised in that: including the pump housing 11；The pump housing 11
It is interior that there is interconnected draw water chamber 12 and drainage cavity 13；The side of the chamber 12 that draws water is equipped with pump mouth 14；The drainage cavity
13 side is equipped with discharge outlet 15；Described draw water is provided with partition 16 between chamber 12 and drainage cavity 13, have on partition 16 multiple
Filter hole；Rotation is provided with the first break bar 17 in the chamber 12 that draws water, and offers washing away towards partition 16 on the pump housing 11
Mouthful；It is connected between the swash and discharge outlet 15 by flush pipe 18；19 He of the first valve is connected on the flush pipe 18
Booster pump 21.
During blowdown, sewage enters centrifugal pump from the chamber 12 that draws water, and then passes through partition 16 and enters in drainage cavity 13, most
It is discharged eventually from discharge outlet 15；During this, partition 16 can stop the biggish impurity of particle, in impurity is drawn water chamber 12
First break bar 17 crushes, and can pass through, avoid the clogging centrifugal pump of large granular impurity；After long-play, meeting on partition 16
Adhere to impurity or even clogging filter hole, at this time openable first valve 19, then starts booster pump 21, by 15 row of discharge outlet
Water out is flushed on partition 16, washes away the attachment on partition 16, after washing away completely, closes the first valve 19 and booster pump 21
, it is easy to operate, repeat operation, effectively avoid partition 16 be blocked, guarantee centrifugal pump well run, substantially increase from
The service life of heart pump, wherein water velocity can be improved in booster pump 21, increases scouring force, to guarantee to wash away clean；And it drains
The impurity particle contained in the water of mouthfuls 15 discharges is smaller, and the water being discharged using discharge outlet 15 is for washing away partition 16, secondary use,
Without external water source, water resource is greatly saved, reduces operating cost.
The both ends of the pump housing 11 are connected separately with pumping motor 22 and drain motor 23；The output of the pumping motor 22
End, which is protruded into the chamber 12 that draws water, is connected with pumping impeller 24；The output end of the drain motor 23 protrudes into the row of being connected in drainage cavity 13
Water impeller 25.Pumping motor 22 drives pumping impeller 24 to rotate, and sewage is sucked from pump mouth 14；Drain motor 23 drives row
Water impeller 25 rotates, and sewage is discharged from discharge outlet 15.
Baffle 26 is provided in the pump housing 11, the inner cavity of the pump housing 11 is divided into draw water chamber 12 and drainage cavity by baffle 26
13；And the lower end of the baffle 26 has the U-shaped channel 27 for being connected to draw water chamber 12 and drainage cavity 13 with 11 inner wall of the pump housing.Sewage from
After entering in pump mouth 14, flowed along graphic arrow direction.
Partition 16 is connected between 11 inner wall of baffle 26 and the pump housing, compact-sized, is conducive to later period installation and swash
Setting, swash can directly be provided with the side of the pump housing 11.
First break bar 17 is connected with first motor 28, and the first motor 28 is fixed on outside the pump housing 11, first motor
28 output shaft 47, which puts in draw water, to be connected in chamber 12 with the first break bar 17, and the first break bar 17 of drive of first motor 28 rotates, will be through
The impurity crossed crushes.And the second break bar 29 below partition 16 is provided in U-shaped channel 27, the second break bar 29 is connected with
Second motor 31, the connection structure of the second break bar 29 is consistent with the first break bar 17, and the second motor 31 is fixed on the lower end of the pump housing 11.
Second break bar 29 can play separating twice, and can crush the impurity after partition 16 stops, and impurity is effectively avoided to block partition 16,
And the second break bar 29 is positioned close to 11 basal surface position of the pump housing, in its rotation process, can play stirring action, prevent solid
Impurity effectively improves the reliability of centrifugal pump in 11 bottom deposit of the pump housing.
The pump housing 11 and baffle 26 are structure as a whole, and using casting and forming, reduce manufacturing cost.
The lower end of the pump housing 11 has opening, and the lower end of the pump housing 11 is removably connected with bottom cover, and specially bolt connects
It connects, easy to disassemble and later period maintenance.
11 lower end of the pump housing is connected with sewage pipe 32, the second valve 33 is connected on the sewage pipe 32, when miscellaneous in centrifugal pump
Matter accumulation is too many, it is difficult to wash away, impurity can be discharged by sewage pipe 32, guarantee the normal operation of centrifugal pump, be conducive to improve from
The service life of heart pump.
It is respectively connected with seal assembly between the pumping motor 22 and the output shaft 47 and the pump housing 11 of drain motor 23, and pumps
The pedestal of the support pump housing 11, pumping motor 22 and drain motor 23 is connected with below body 11.Seal assembly guarantee output shaft 47 with
Rotary seal connects between the pump housing 11, prevents sewage from oozing out, and pedestal supports the pump housing 11, pumping motor 22 and drain motor 23, protects
Card pumping motor 22 and drain motor 23 rotate coaxially.
Such as Fig. 3, the seal assembly includes end ring 41, wedge shape pressure ring 42, wedge-type seal circle and backing plate 43；The pump housing 11
One end offer cylindrical seal chamber, the output shaft 47 of pumping motor 22 is arranged across seal chamber；The end ring 41, wedge pressure
Ring 42, wedge-type seal circle and backing plate 43 are successively set in seal chamber, and backing plate 43 is resisted against the bottom end of seal chamber, and end ring 41 can
Dismantling connection is in the open end of seal chamber；The wedge-type seal circle includes exterior seal ring 44 and inner seal ring 45, and exterior seal ring
44 inner wall is outer inclined-plane, and the outer wall of inner seal ring 45 is outer inclined-plane, and outer inclined-plane and outer inclined-plane are V-shaped, the wedge shape pressure ring 42
It is inserted between exterior seal ring 44 and inner seal ring 45, the end ring 41 is resisted against the end face of wedge shape pressure ring 42.
It is applied to 42 extruding force of wedge shape pressure ring by end ring 41, wedge shape pressure ring 42 squeezes wedge-type seal circle by inclined-plane, makes
The outer wall for obtaining exterior seal ring 44 is tightly abutted against the inner wall of seal chamber, and the inner wall of inner seal ring 45 is tightly abutted against pumping motor 22
Output shaft 47 on, seal chamber is fully sealed, prevents sewage from oozing out out of the pump housing 11, structure is simple, and is by wedge shape
Pressure ring 42, which applies, to be forced external force and realizes sealing, sealed reliable, and can guarantee sealing reliability by fastening end ring 41, is convenient for
Later maintenance effectively improves the service life of centrifugal pump.
The sealing structure at 11 both ends of the pump housing is consistent, and both ends are realized by above-mentioned wedge-type seal circle and sealed.
It is connected through a screw thread between the end ring 41 and the pump housing 11.And the end of end ring 41 offers spanner mouth, is conducive to
Tightening operation can increase extruding force, improve sealing performance by tightening end ring 41.
There are gaps between the wedge shape pressure ring 42 and backing plate 43, and gap is 0.5mm~2mm.Guarantee wedge shape pressure ring 42
There are compression spaces, and wedge-type seal circle is avoided to deform under the action of extruding force.
The bevel angle of the exterior seal ring 44 is 10 °~30 °, the bevel angle phase of inner seal ring 45 and exterior seal ring 44
Deng.
The bottom of the seal chamber is the first protrusion 46, is provided with the first sealing ring between the first protrusion 46 and output shaft 47
48.Play the role of secondary seal, seals relatively reliable.First protrusion 46 has inner hole, and output shaft 47 passes through the first protrusion 46 and sets
It sets.
The second protrusion 49 is provided in the pump housing 11, the second protrusion 49 and 46 interval of the first protrusion are arranged, and second is convex
It rises and is provided with the second sealing ring 51 between 49 and output shaft 47, certain supporting role is played while sealing, prevent
Only output shaft 47 is too long and generation deflects.
The material of first sealing ring 48 and the second sealing ring 51 is PTFE.
The exterior seal ring 44 and inner seal ring 45 are all made of graphite material, have good crocking resistance, and rub
Coefficient is lower, and friction is small between output shaft 47, reduces the abrasion of output shaft 47 and sealing element, is conducive to improve sealing
The service life of structure.Graphite material has fire protecting performance, improves the reliability of centrifugal pump.
Such as Fig. 4, the pedestal includes bottom plate 52, support plate 53 and the adjusting group being arranged between bottom plate 52 and support plate 53
Part；The upper end of the support plate 53 is fixedly connected with the pump housing 11, pumping motor 22 and drain motor 23；The adjusting component includes
Mounting base 54 and strut 55；Mounting hole 56 is offered in the mounting base 54；The upper end of the strut 55 is fixedly connected on support
The lower end of plate 53, the lower end of strut 55, which moves up and down, to be arranged in mounting hole 56；The bottom surface of the strut 55 and mounting hole 56 it
Between be provided with multiple springs 57；The upper end of the strut 55 is connected with adjusting set 58, and adjusting set 58 is protruded in the upper end of strut 55
Setting；The sleeve 59 being fixed in mounting base 54 is arranged with outside the strut 55；The adjusting set 58, which moves up and down, is connected to set
The upper end of cylinder 59.
Support plate 53 fixes the pump housing 11, pumping motor 22 and drain motor 23 simultaneously, effectively motor is avoided to deflect, and guarantees two
The output shaft 47 of a motor is not subject to radial force, improves the service life of centrifugal pump；Motor can generate vibration in the process of running,
Spring 57 can play damping effect；And by mobile adjusting set 58, the height of strut 55 is adjusted, so as to adjust the height of centrifugal pump
Degree, can be adjusted flexibly according to practical situations, and installation is simple, be more widely applied.
The adjusting component be evenly arranged with it is multiple, in the present embodiment, adjusting group valence setting there are three.
The spring 57 is provided with multiple, and 56 bottom of mounting hole offers multiple spring eyes, and spring 57 is arranged in spring
In 57 holes.
The lower end of the strut 55 has annular projection, and the lower end of sleeve 59 is resisted against on annular projection, limits strut 55
Maximum height.
The lower end of the sleeve 59 has interconnecting piece, and interconnecting piece is annular in shape, and interconnecting piece, which is bolted to connection, to be installed
It is easy to disassemble on seat 54.
It is connected through a screw thread between the adjusting set 58 and sleeve 59, offers internal screw thread in adjusting set 58, on sleeve 59
The external screw thread to match with internal screw thread is offered, by screwing adjusting set 58, can adjust the height of adjusting set 58, and on strut 55
With step, adjusting set 58 is stuck on the step of strut 55, when adjusting set 58 moves up and down, be will drive strut 55 and is moved up and down,
Structure is simple, easy to operate.
The outer circle of the adjusting set 58 has spanner slot, convenient for adjusting.
It has been connected through a screw thread anti-DNA releaxed circular DNA 61 on the external screw thread of the sleeve 59, after the position of adjusting set 58 is fixed, has twisted
Tight anti-DNA releaxed circular DNA 61 effectively prevent adjusting set 58 to loosen so that anti-DNA releaxed circular DNA 61 is resisted against the lower end of adjusting set 58, improves stable structure
Property.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, there can be various modifications and variations in the spirit and principles of the utility model, these are equivalent
Variation or replacement etc., are included in the protection scope of the present invention.
Claims (10)
1. a kind of seal structure for centrifugal pump, including the pump housing, pumping motor and seal assembly, it is characterised in that: the sealing group
Part includes end ring, wedge shape pressure ring, wedge-type seal circle and backing plate；One end of the pump housing offers cylindrical seal chamber, and draw water electricity
The output shaft of machine is arranged across seal chamber；The end ring, wedge shape pressure ring, wedge-type seal circle and backing plate are successively set on seal chamber
It is interior, and backing plate is resisted against the bottom end of seal chamber, end ring is detachably connected on the open end of seal chamber；The wedge-type seal circle includes
Exterior seal ring and inner seal ring, and the inner wall of exterior seal ring is outer inclined-plane, the outer wall of inner seal ring are outer inclined-plane, outer inclined-plane with it is interior
Inclined-plane is V-shaped, and the wedge shape pressure ring is inserted between exterior seal ring and inner seal ring, and the end ring is resisted against the end of wedge shape pressure ring
Face.
2. seal structure for centrifugal pump according to claim 1, it is characterised in that: pass through spiral shell between the end ring and the pump housing
Line connection.
3. seal structure for centrifugal pump according to claim 2, it is characterised in that: the end of the end ring offers spanner
Mouthful.
4. seal structure for centrifugal pump according to claim 3, it is characterised in that: stayed between the wedge shape pressure ring and backing plate
There is gap.
5. seal structure for centrifugal pump according to claim 4, it is characterised in that: the gap is 0.5mm~2mm.
6. seal structure for centrifugal pump described in any one according to claim 1~5, it is characterised in that: the exterior seal ring
Bevel angle be 10 °~30 °, inner seal ring is equal with the bevel angle of exterior seal ring.
7. seal structure for centrifugal pump according to claim 6, it is characterised in that: the bottom of the seal chamber is first convex
It rises, is provided with the first sealing ring between the first protrusion and output shaft.
8. seal structure for centrifugal pump according to claim 7, it is characterised in that: it is convex to be provided with second in the pump housing
It rises, the second protrusion is arranged with the first bulge clearance, and is provided with the second sealing ring between the second protrusion and output shaft.
9. seal structure for centrifugal pump according to claim 8, it is characterised in that: first sealing ring and the second sealing
The material of circle is PTFE.
10. according to seal structure for centrifugal pump described in claim 7~9 any one, it is characterised in that: the exterior seal ring
Graphite material is all made of with inner seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822063320.8U CN209164167U (en) | 2018-12-10 | 2018-12-10 | A kind of seal structure for centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822063320.8U CN209164167U (en) | 2018-12-10 | 2018-12-10 | A kind of seal structure for centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209164167U true CN209164167U (en) | 2019-07-26 |
Family
ID=67343065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822063320.8U Active CN209164167U (en) | 2018-12-10 | 2018-12-10 | A kind of seal structure for centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209164167U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878408A (en) * | 2020-08-12 | 2020-11-03 | 广州市顺创科技有限公司 | Drilling fluid sand pump for oil exploitation and use method thereof |
-
2018
- 2018-12-10 CN CN201822063320.8U patent/CN209164167U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878408A (en) * | 2020-08-12 | 2020-11-03 | 广州市顺创科技有限公司 | Drilling fluid sand pump for oil exploitation and use method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A sealing structure for centrifugal pumps Granted publication date: 20190726 Pledgee: Suining Bank Co.,Ltd. Mianyang Branch Pledgor: SICHUAN SANTAI JIANMEN PUMP CO.,LTD. Registration number: Y2024980003068 |