CN115199531A - Constant temperature delivery pump - Google Patents
Constant temperature delivery pump Download PDFInfo
- Publication number
- CN115199531A CN115199531A CN202210689411.0A CN202210689411A CN115199531A CN 115199531 A CN115199531 A CN 115199531A CN 202210689411 A CN202210689411 A CN 202210689411A CN 115199531 A CN115199531 A CN 115199531A
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- China
- Prior art keywords
- bush
- bushing
- pump body
- pump
- ring body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 238000005485 electric heating Methods 0.000 claims abstract description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 6
- 239000010439 graphite Substances 0.000 claims abstract description 6
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 3
- 230000006978 adaptation Effects 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 239000000919 ceramic Substances 0.000 description 5
- 230000008676 import Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C2/3441—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
- F04C2/3445—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the vanes having the form of rollers, slippers or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0096—Heating; Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/80—Other components
- F04C2240/806—Pipes for fluids; Fittings therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a constant-temperature delivery pump, which comprises a pump body shell, a liquid inlet pipe, a liquid outlet pipe, a pump body bushing and an impeller, wherein the impeller is provided with a blade made of ceramic materials, the pump body bushing is positioned between the impeller and the pump body shell, the pump body bushing is provided with a bushing liquid inlet, a bushing second ring body, a bushing liquid outlet and a bushing first ring body, the bushing liquid inlet is positioned between the bushing second ring body and the bushing first ring body, the central line of the bushing liquid inlet is in a horizontal state, the bushing liquid outlet is positioned between the bushing second ring body and the bushing first ring body, the central line of the bushing liquid outlet is in a vertical state, the pump body bushing is made of graphite, an electric heating belt is arranged on the outer surface of the bushing first ring body of the pump body bushing, the pump body shell is provided with an electric heating belt passing through groove, and the electric heating belt passes through the through groove to be connected with an electric heating control part. The constant-temperature delivery pump adopts the structure, so that the use cost of a user is reduced, the smooth delivery for a long time can be ensured, the occupied area can be reduced, and the maintenance cost can be reduced.
Description
Technical Field
The invention relates to a pump, in particular to a constant-temperature delivery pump.
Background
Most of the existing conveying pumps for constant temperature depend on imports and are expensive, in order to reduce the use cost of users, the invention patent with the Chinese patent publication No. CN102562582A discloses a silicon steel coating liquid conveying pump which comprises a pump body shell, a front pump cover, a liquid inlet pipe, a liquid outlet pipe and an impeller, wherein a constant temperature circulating water mechanism is arranged beside the pump body shell, a constant temperature water outlet and a constant temperature water inlet are arranged on the front pump cover, a water outlet pipe is arranged between the constant temperature water outlet on the front pump cover and the constant temperature circulating water mechanism, a water inlet pipe is arranged between the constant temperature water inlet on the front pump cover and the constant temperature circulating water mechanism, the impeller consists of a rotor part and blades, the blades are made of ceramics, a pump body bushing is arranged between the impeller and the pump body shell, and the pump body bushing is made of ceramics. Although such scheme can reduce user's use cost, guarantees to carry smoothly for a long time, because the structure of the constant temperature water export that sets up on constant temperature circulating water mechanism, the preceding pump cover and constant temperature water import, outlet pipe and inlet tube need not only occupy great volume, and cost of maintenance is also higher moreover.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a constant temperature delivery pump, this kind of constant temperature delivery pump can not only reduce user's use cost, guarantee to carry for a long time smoothly, and can reduce area, reduce cost of maintenance.
To solve the technical problem, the technical scheme of the invention is as follows: the utility model provides a constant temperature delivery pump, includes pump body shell, feed liquor pipe, drain pipe, pump body bush and impeller, the impeller blade that has ceramic material, the drain pipe central line be vertical state, feed liquor pipe central line be the horizontality, pump body bush be located between impeller and the pump body shell, pump body bush have bush inlet, bush second ring body, bush liquid outlet and the first ring body of bush, the bush inlet is located between bush second ring body and the first ring body of bush and the central line is the horizontality, the bush liquid outlet is located between bush second ring body and the first ring body of bush and the central line is vertical state, pump body bush's material be graphite, the first ring body surface of bush of pump body bush is provided with the electric heat tape, pump body shell is provided with the electric heat tape and passes logical groove, the electric heat tape pass logical groove and wear out to link to each other with electric heat control portion from the electric heat tape.
The electric heating belt of the pump body shell penetrates through the side of the through groove to be provided with the supporting plate, the supporting plate is provided with the control box, and the electric heating control part is arranged in the control box.
The electric heating belt passes through the through groove and is positioned on the upper part of the pump body shell.
The outer surface of the first ring body of the lining is provided with an electric heating belt placing groove in which an electric heating belt is placed.
The electric heat tape pass through the waterproof joint spare that logical groove was provided with the adaptation, the electric heat tape pass waterproof joint spare.
And a waterproof sleeve is arranged outside the control box.
The drain pipe side still be provided with supplementary electric heat unit, supplementary electric heat unit includes supplementary electric heat control portion and the electric heat tape of laminating with bush second ring body surface, supplementary electric heat control portion is placed in pump body shell surface and is adjacent with the drain pipe, is provided with the electric heat tape on the pump body shell of supplementary electric heat control portion department and passes logical groove.
The constant-temperature delivery pump adopts the structure, can overcome the defect of high use cost of users caused by dependence on import, reduces the use cost of users, can ensure smooth delivery for a long time, and can reduce the occupied area and the maintenance cost.
Drawings
The constant-temperature delivery pump of the invention is further described in detail with reference to the accompanying drawings;
FIG. 1 is a schematic structural diagram of a cross section of a constant-temperature delivery pump according to the present invention;
FIG. 2 is a schematic cross-sectional view of the pump body liner shown in FIG. 1;
FIG. 3 is a left side schematic view of the pump block liner shown in FIG. 2;
FIG. 4 is a schematic view of the pump body housing of FIG. 1;
in the figures, 1, a first flange; 2. a liquid inlet pipe; 3. a pump body housing; 4. a pump body bushing; 5. a second flange; 6. a liquid outlet pipe; 7. a blade; 8. An impeller; 9. the liquid outlet pipe is connected with the end surface; 10. the liquid inlet pipe is connected with the end surface; 11. a bushing liquid inlet; 12. a bushing second ring; 13. a liner liquid outlet; 14. a bushing first ring; 15. an electric heating tape placing groove; 16. a liquid outlet hole of the pump body shell; 17. a liquid inlet hole of the pump body shell; 18. the electric heating belt passes through the through groove; 19. a control box; 20. a support plate; 21. the pump body shell body.
Detailed Description
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the constant temperature delivery pump comprises a first flange 1, a liquid inlet pipe 2, a pump body shell 3, a pump body bushing 4, a second flange 5, a liquid outlet pipe 6, an impeller 8 and an electric heating mechanism, wherein the impeller 8 is of a split type structure and comprises a rotor part and blades 7, the blades 7 are made of ceramics, the pump body bushing 4 is arranged between the impeller 8 and the pump body shell 3, the pump body bushing 4 is made of graphite, and the electric heating mechanism comprises an electric heating belt and an electric heating control part. One end of the liquid inlet pipe 2 is provided with a first flange 1, the other end of the liquid inlet pipe 2 is provided with an external thread section, one end of the liquid outlet pipe 6 is provided with a second flange 5, the other end of the liquid outlet pipe 6 is provided with an external thread section, the pump body shell 3 is provided with a liquid outlet pipe connection end surface 9 and a liquid inlet pipe connection end surface 10, the upper part of a pump body shell body 21 of the pump body shell is provided with an electric heating belt passing through groove 18, the electric heating belt of the pump body shell 3 passes through a supporting plate 20 beside the through groove 18, the supporting plate 20 is provided with a control box 19, an electric heating control part is arranged in the control box 19, the liquid outlet pipe connection end surface 9 and the liquid inlet pipe connection end surface 10 are respectively a horizontal plane and a vertical plane, the middle part of the liquid outlet pipe connection end surface 9 of the pump body shell 3 is provided with a pump body shell liquid inlet hole 17 with internal threads, and the internal threads are matched with the external thread section of the liquid outlet pipe 6; the middle part of the liquid inlet pipe connecting end surface 10 of the pump body shell 3 is provided with a pump body shell liquid outlet hole 16 with internal threads, and the internal threads are matched with the external thread section of the liquid inlet pipe 2, so that the positioning of a pump body bush can be ensured.
Pump body bush 4 has bush inlet 11, bush second ring body 12, bush liquid outlet 13 and the first ring body 14 of bush, and bush inlet 11 is located between bush second ring body 12 and the first ring body 14 of bush and the central line is the horizontality, and bush liquid outlet 13 is located between bush second ring body 12 and the first ring body 14 of bush and the central line is vertical state, and the first ring body 14 surface of bush has electric heat tape standing groove 15, and electric heat tape standing groove 15 arranges along circumference.
The electric heat tape passes through logical groove 18 from the electric heat tape and wears out to link to each other with electric heat control portion, and electric heat control portion arranges control box 19 in, and the electric heat tape passes logical groove 18 and is provided with the waterproof joint spare of adaptation, and the electric heat tape passes waterproof joint spare, is provided with waterproof cover outside control box 19. In order to guarantee that the operation of constant temperature delivery pump is stable, the drain pipe side still is provided with supplementary electric heat unit, supplementary electric heat unit include supplementary electric heat control portion and with the electric heat tape of the outer surface laminating of bush second ring body, supplementary electric heat control portion put in pump body shell surface and adjacent with the drain pipe, be provided with the electric heat tape on the pump body shell of supplementary electric heat control portion department and pass logical groove.
Compared with the invention patent with the name of a silicon steel coating liquid delivery pump with the Chinese patent publication No. CN102562582A, the constant-temperature delivery pump adopts the structure, the material of the blade is still ceramic, the material of the pump body bushing is changed from ceramic to graphite, the outer surface of the pump body bushing is attached by an electric heating belt by utilizing the good thermal conductivity and corrosion resistance of the graphite and the widely applied mature technology, a constant-temperature circulating water mechanism is replaced, a constant-temperature water outlet and a constant-temperature water inlet are not arranged on the front pump cover, a water outlet pipe and a water inlet pipe are not needed, the defect of high use cost of a user caused by dependence on the inlet can be overcome, the use cost of the user is reduced, the smooth long-time delivery can be ensured, the floor area can be reduced, and the maintenance cost is reduced.
Claims (7)
1. The utility model provides a constant temperature delivery pump, includes pump body shell, feed liquor pipe, drain pipe, pump body bush and impeller, the impeller blade that has ceramic material, the drain pipe central line be vertical state, feed liquor pipe central line be the horizontality, pump body bush be located between impeller and the pump body shell, pump body bush bushing bush inlet, bush second ring body, bush liquid outlet and the first ring body of bush have, the bush inlet is located between bush second ring body and the first ring body of bush and the central line is the horizontality, the bush liquid outlet is located between bush second ring body and the first ring body of bush and the central line is vertical state, its characterized in that: the pump body bush is made of graphite, an electric heating tape is arranged on the outer surface of a first ring body of the bush of the pump body bush, the electric heating tape penetrates through the through groove from the casing of the pump body, and the electric heating tape penetrates through the through groove and is connected with the electric heating control part.
2. A constant temperature delivery pump according to claim 1, wherein: the electric heating belt of the pump body shell penetrates through the side of the through groove to be provided with a supporting plate, the supporting plate is provided with a control box, and the electric heating control part is arranged in the control box.
3. The constant temperature delivery pump of claim 2, wherein: the electric heating belt passes through the through groove and is positioned on the upper part of the pump body shell.
4. A constant temperature delivery pump according to claim 3, wherein: the outer surface of the first ring body of the lining is provided with an electric heating belt placing groove in which an electric heating belt is placed.
5. A constant temperature delivery pump according to claim 3, wherein: the electric heat tape pass logical groove and be provided with the waterproof joint spare of adaptation, the electric heat tape pass waterproof joint spare.
6. A constant temperature delivery pump according to claim 3, wherein: a waterproof sleeve is arranged outside the control box.
7. A pump as claimed in any one of claims 1 to 6, wherein: the drain pipe side still be provided with supplementary electric heat unit, supplementary electric heat unit includes supplementary electric heat control portion and the electric heat tape of laminating with bush second ring body surface, supplementary electric heat control portion is placed in pump body shell surface and is adjacent with the drain pipe, is provided with the electric heat tape on the pump body shell of supplementary electric heat control portion department and passes logical groove.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210689411.0A CN115199531A (en) | 2022-06-17 | 2022-06-17 | Constant temperature delivery pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210689411.0A CN115199531A (en) | 2022-06-17 | 2022-06-17 | Constant temperature delivery pump |
Publications (1)
Publication Number | Publication Date |
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CN115199531A true CN115199531A (en) | 2022-10-18 |
Family
ID=83575772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202210689411.0A Pending CN115199531A (en) | 2022-06-17 | 2022-06-17 | Constant temperature delivery pump |
Country Status (1)
Country | Link |
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CN (1) | CN115199531A (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2608723Y (en) * | 2003-03-18 | 2004-03-31 | 沈訚 | Thermal insulating screw pump |
CN102497680A (en) * | 2011-11-28 | 2012-06-13 | 武汉船用机械有限责任公司 | Heating device of lining |
CN102562582A (en) * | 2012-03-05 | 2012-07-11 | 安徽凯特泵业有限公司 | Silicon-steel coating liquid conveying pump |
CN102828957A (en) * | 2012-09-04 | 2012-12-19 | 大耐泵业有限公司 | Upright type liquid discharge centrifugal pump |
CN108412811A (en) * | 2018-04-20 | 2018-08-17 | 安徽畅宇泵阀制造有限公司 | A kind of water pump with antifreeze function |
CN207864170U (en) * | 2018-01-30 | 2018-09-14 | 浙江威肯特泵业有限公司 | A kind of bitumenpump of fast heating |
CN114060318A (en) * | 2020-07-31 | 2022-02-18 | 三花亚威科电器设备(芜湖)有限公司 | Heating pump and dish washing machine with same |
EP3967882A1 (en) * | 2020-09-09 | 2022-03-16 | METELLI S.p.A. | Multiscrew pump for cooling circuits |
CN115199530A (en) * | 2022-06-17 | 2022-10-18 | 安徽凯特泵业有限公司 | Pump body bush assembly of constant temperature delivery pump |
-
2022
- 2022-06-17 CN CN202210689411.0A patent/CN115199531A/en active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2608723Y (en) * | 2003-03-18 | 2004-03-31 | 沈訚 | Thermal insulating screw pump |
CN102497680A (en) * | 2011-11-28 | 2012-06-13 | 武汉船用机械有限责任公司 | Heating device of lining |
CN102562582A (en) * | 2012-03-05 | 2012-07-11 | 安徽凯特泵业有限公司 | Silicon-steel coating liquid conveying pump |
CN102828957A (en) * | 2012-09-04 | 2012-12-19 | 大耐泵业有限公司 | Upright type liquid discharge centrifugal pump |
CN207864170U (en) * | 2018-01-30 | 2018-09-14 | 浙江威肯特泵业有限公司 | A kind of bitumenpump of fast heating |
CN108412811A (en) * | 2018-04-20 | 2018-08-17 | 安徽畅宇泵阀制造有限公司 | A kind of water pump with antifreeze function |
CN114060318A (en) * | 2020-07-31 | 2022-02-18 | 三花亚威科电器设备(芜湖)有限公司 | Heating pump and dish washing machine with same |
EP3967882A1 (en) * | 2020-09-09 | 2022-03-16 | METELLI S.p.A. | Multiscrew pump for cooling circuits |
CN115199530A (en) * | 2022-06-17 | 2022-10-18 | 安徽凯特泵业有限公司 | Pump body bush assembly of constant temperature delivery pump |
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