CN215672735U - High-flow acid-resistant alkaline washing liquid dish-washing machine drainage pump - Google Patents
High-flow acid-resistant alkaline washing liquid dish-washing machine drainage pump Download PDFInfo
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- CN215672735U CN215672735U CN202120275511.XU CN202120275511U CN215672735U CN 215672735 U CN215672735 U CN 215672735U CN 202120275511 U CN202120275511 U CN 202120275511U CN 215672735 U CN215672735 U CN 215672735U
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- pump cover
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- 239000002253 acid Substances 0.000 title claims abstract description 18
- 238000005406 washing Methods 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 title claims abstract description 13
- 238000004851 dishwashing Methods 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 96
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000003513 alkali Substances 0.000 claims abstract description 13
- 229920002943 EPDM rubber Polymers 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000006223 plastic coating Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 14
- 239000010865 sewage Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000010349 pulsation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002585 base Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of draining pumps, and particularly relates to a high-flow acid and alkali resistant washing liquid draining pump for a dish washing machine, which comprises a pump body, a pump cover arranged at the end part of the pump body, a rotor arranged at the pump body, a rotating shaft, a stator assembly and an impeller, wherein the rotating shaft is arranged at a rotating shaft center, a connecting boss extending into the pump cover is arranged at the joint surface of the pump body and the pump cover, a groove ring is arranged at the pump cover, a sealing ring is arranged in the groove ring and is respectively abutted against the bottom end surface and the side edge of the groove ring, a rotor cavity is arranged at the pump body, a bearing assembly for supporting the inner end of the rotating shaft is arranged in the rotor cavity, a plastic coating layer is arranged on the surface of the rotor, the rotating shaft is a 304 rotating shaft, a sealing assembly is arranged on the rotating shaft corresponding to the opening of the rotor cavity, a water inlet and a water outlet are arranged along the axial direction of the pump cover, the inner diameters of the water inlet and the water outlet are consistent, a pressure sensor for detecting the pressure of the draining water is arranged in the pump cover, the flow rate is large, The sealing performance is good, the corrosion resistance, the acid and alkali resistance and the liquid absorption capacity are good, the heat dissipation efficiency is high, and the service performance is good.
Description
Technical Field
The utility model belongs to the technical field of draining pumps, and particularly relates to a high-flow acid and alkali resistant washing liquid draining pump for a dish washing machine.
Background
At present, with the increasing health protection awareness of consumers, how to sterilize and disinfect food and drink places becomes the most popular topic at present, and disinfection measures related to food and drink and tableware are more highly regarded. Chain kitchen health appliances represented by dish washers quickly get red, and the consumption demand is gradually increased. The drain pump is one of the important parts of the dishwasher, and has a great influence on the normal use of the dishwasher.
The drain pump is when using, can't handle the residue of food for the residue probably causes the jam of drain pump, influences the normal use of drain pump, and the majority reason that the drain pump blockked up is that drainage flow is little, and the drain pump is at long-time during operation, and the unable effectual heat dissipation that dispels of motor, and the environment of the work of moist always all can influence the normal use of motor, and the detergent that adds in the dish washer all has corrosive effects to the components such as rotor of drain pump, can reduce the life of water pump, has influenced the normal work of dish washer.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a high-flow acid-resistant alkaline washing liquid dish washing machine drainage pump which has the advantages of large flow, good sealing performance, better corrosion resistance, acid-resistant alkali-resistant liquid absorption capacity, high heat dissipation efficiency and good service performance.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
a high-flow acid-resistant alkaline washing liquid dishwasher drainage pump comprises a pump body, a pump cover at the end part of the pump body, a rotor, a rotating shaft, a stator component and an impeller at the position of the pump body, wherein the rotating shaft is arranged at the position of a rotating shaft core, a connecting boss extending into the pump cover is arranged at the joint surface of the pump body and the pump cover, a groove ring matched with the connecting boss is arranged at the position of the pump cover, a sealing ring is arranged in the groove ring, the sealing ring is respectively abutted against the bottom end surface and the side edge of the groove ring,
a rotor cavity with an opening facing the pump cover is arranged at the pump body, the rotor is arranged in the rotor cavity, a bearing assembly for supporting the inner end of the rotating shaft is arranged in the rotor cavity, a plastic-coated layer is arranged on the surface of the rotor, the rotating shaft is a 304 rotating shaft, a sealing assembly is arranged on the rotating shaft corresponding to the opening of the rotor cavity,
the pump body is provided with a cooling cavity at the periphery of the rotor cavity, the outer end of the rotating shaft extends to the pump cover, the impeller is arranged at the outer end part of the rotating shaft, the pump cover is internally provided with an impeller cavity matched with the impeller, the pump cover is provided with a water inlet and a water outlet, the water outlet is arranged along the axial direction of the pump cover, the inner diameters of the water inlet and the water outlet are consistent, the pump cover is internally provided with a pressure sensor for detecting the pressure of the discharged water,
the sealing assembly comprises a plunger sleeved on the shaft body of the rotating shaft, a second sealing ring sleeved outside the plunger, and a first sealing ring sleeved outside the second sealing ring, wherein a plurality of bulges are arranged on the outer surface of the plunger, a connecting boss clamped between two adjacent bulges is arranged on the inner side wall of the second sealing ring, the front part of the second sealing ring is of a conical structure, the front end with the smaller conical structure extends forwards to be abutted against the shaft body of the rotating shaft, the first sealing ring comprises an inner ring body sleeved outside the second sealing ring and an outer ring body sleeved outside the inner ring body, the outer peripheral surface of the outer ring body is contacted with the inner wall of the opening of the rotor cavity through a conical surface, the front end of the inner ring body is abutted against the shaft body of the rotating shaft, the inner ring body and the outer ring body are connected through a connecting part, a rear connecting ring extending backwards is arranged on the rear side of the connecting part close to the rotor, the rear end of the second sealing ring is connected with a rear matching sleeve, and the outer wall surface of the rear matching sleeve is contacted with the inner wall surface of the rotor cavity, a matching groove with a forward opening is formed between the rear matching sleeve and the rear ring body of the second sealing ring, the rear end of the first sealing ring and the rear connecting ring extend into the matching groove, and the outer wall surface of the rear connecting ring is in contact with the inner wall surface of the rear matching sleeve.
Furthermore, the water outlet and the water inlet are communicated with the impeller cavity.
Furthermore, the joint surface of the pump body and the pump cover is provided with a plurality of positioning bulges, and the corresponding position of the pump cover is provided with a positioning groove matched with the positioning bulges.
Furthermore, the water inlet is arranged along the tangential direction of the pump cover, and the inner diameter of the water inlet is 20-30 mm.
Furthermore, the plunger, the second sealing ring, the first sealing ring and the sealing ring are all made of EPDM rubber parts.
Furthermore, stator module including set up at the U type stator of pump body rear side, establish bobbin, the coil on the bobbin on the U type stator, the outside of bobbin is equipped with the shell, is equipped with the metal connection piece of connecting the coil on the shell, the opening part cover of U type stator establish in the outside in rotor chamber, pump body rear side be equipped with U type stator complex groove of stepping down, the pile of U type stator is 19-21mm thick.
Furthermore, the outer wall surface of the outer ring body is a conical surface, the smaller end of the outer ring body faces the front side, the front part of the inner ring body is provided with a conical part matched with the conical structure of the second sealing ring, the inner wall structure of the opening of the rotor cavity is matched with the outer ring body structure, the rear end of the plunger extends to the rear end side of the second sealing ring, and the plunger is connected with the outer ring body structure in a sealing mode
Furthermore, the outer wall surface of the rear matching sleeve is provided with a plurality of convex rings, and the corresponding position of the inner wall of the rotor cavity is provided with a convex ring groove matched with the convex ring structure.
Furthermore, the rear end of the rear connecting ring is provided with a limiting lug, and a matching groove matched with the limiting bulge structure is formed in the corresponding position of the inner wall of the rear matching sleeve.
Furthermore, the impeller be equipped with four blades, the outer wall in rotor chamber be equipped with the axial strengthening rib of multichannel along the pivot.
The utility model has the beneficial effects that: by adopting the scheme, the method has the advantages that,
1) the structural design of the drain pump of the dish washing machine is innovated, the sizes of the water inlet and the water outlet of the water pump are designed to be the same, the large flow of the water pump is met, the volume per minute is about 30L, and various complex washing requirements are met;
2) the rotor encapsulation design and the 304 rotating shaft are innovated, the rotor can bear the corrosion of acid-base washing liquor, the sealing rubber part adopts EPDM (ethylene-propylene-diene monomer) glue, the sealing property and the acid-base resistance are better than those of a water pump of a traditional dish-washing machine, the stator stack thickness is thinner, the power consumption is reduced, and the practicability is strong;
3) the design of the drainage pump control system of the dish washing machine is innovated, when the pressure sensor detects that the pressure value is rapidly reduced and the pressure pulsation amplitude and the pressure pulsation frequency are rapidly increased, the drainage is indicated to be completed, the operation can be stopped in time, the operation noise is reduced, the driving electric energy is reduced, and the washing efficiency of the dish washing machine is favorably improved.
Drawings
The foregoing and other objects, features, and advantages of the utility model will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional structure of a rotor according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a pump cover according to an embodiment of the utility model.
Fig. 4 is a schematic structural diagram of a pump body according to an embodiment of the present invention.
Fig. 5 is a schematic cross-sectional structure of a sealing structure according to an embodiment of the present invention.
FIG. 6 is a schematic cross-sectional view of a plunger according to an embodiment of the present invention.
Fig. 7 is a schematic cross-sectional view of a first seal ring according to an embodiment of the utility model.
Fig. 8 is a schematic cross-sectional view of a second seal ring according to an embodiment of the present invention.
FIG. 9 is a schematic view of the rear side of the pump body in one embodiment of the present invention.
Fig. 10 is a schematic cross-sectional view of a bobbin according to an embodiment of the present invention.
Wherein: 1 is a pump body, 11 is a rotor cavity, 12 is a cooling cavity, 13 is a connecting boss, 14 is a sealing ring, 15 is a positioning bulge, 2 is a pump cover, 21 is a water inlet, 22 is a water outlet, 23 is a positioning groove, 24 is a groove ring,
3 is a rotor, 31 is a plastic-coated layer, 4 is a rotating shaft, 41 is a bearing, 5 is an impeller, 6 is a plunger, 61 is a bulge 61, 7 is a first sealing ring, 71 is a connecting boss, 72 is a rear matching sleeve, 73 is a matching groove, 721 is a limiting groove, 722 is a convex ring,
8 is the second seal circle, 81 is the inner circle body, 82 is the outer circle body, 83 is the back connecting ring, 831 is spacing lug, 9 is the U type stator, 10 is the bobbin, 101 is the coil, 102 is the shell, 103 is pressure sensor.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
Referring to fig. 1 and 2, the high-flow acid and alkali resistant washing liquid draining pump for the dish washing machine comprises a pump body 1, a pump cover 2 at the front end of the pump body 1, a rotor 3 at the pump body 1, a rotating shaft 4, a stator assembly and an impeller 5, wherein the rotating shaft 4 is arranged at the axis of the rotor 3, a rotor cavity 11 with an opening facing the pump cover 2 is arranged at the pump body 1, the rotor 2 is arranged in the rotor cavity 11, a bearing 41 for supporting the inner end of the rotating shaft 4 is arranged at the rear end inside the rotor cavity 11, the rotating shaft can be well supported by the bearing 41, the rotating speed of the rotating shaft is improved, the rotating shaft is enabled to rotate at a high speed, a plastic coating layer 31 is arranged on the surface of the rotor 3, the rotating shaft 4 is a 304 rotating shaft, the rotating shaft 4 and the rotor 3 have good corrosion resistance and acid and alkali resistant liquid, the service life of the rotating shaft 3 and the rotating shaft 4 is prolonged, the draining pump can operate for a long time, the impeller 5 is provided with four blades, a plurality of reinforcing ribs along the axial direction of the rotating shaft are arranged on the outer wall of the rotor cavity 11, the rotor cavity has high structural strength and can bear the stress generated by the high-speed rotation of the rotating shaft.
Referring to fig. 3-5, a pump body 1 is provided with a cooling cavity 12 at the periphery of a rotor cavity 11, the outer end of a rotating shaft 4 extends to a pump cover 2, an impeller 5 is installed at the outer end part of the rotating shaft 4, an impeller cavity 41 matched with the impeller 5 is arranged in the pump cover 2, the pump cover 2 is provided with a water inlet 21 and a water outlet 22, the water inlet 21 is arranged along the tangential direction of the pump cover 2, the water outlet 22 is arranged along the axial direction of the pump cover, the inner diameters of the water inlet 21 and the water outlet 22 are consistent, the inner diameters of the water inlet 21 and the water outlet 22 are 25mm, the water inlet 21 arranged along the tangential direction can accelerate the outflow of sewage, the outflow of sewage can be accelerated along the axial water outlet 22 side, so that the flow rate of the drainage pump is fast, the water inlet and outlet sizes of the water pump are designed to be the same, the mass flow of the pump is satisfied, the washing requirement of various complexities is satisfied at about 30L per minute, a sealing assembly is arranged at the opening part corresponding to the rotor cavity 11 on the rotating shaft 3, the sealing assembly can prevent sewage from entering a rotor cavity to corrode the rotor, the joint surface of the pump body 1 and the pump cover 2 is provided with a connecting boss 13 extending into the pump cover 1, the pump cover 2 is provided with a groove ring 24 matched with the connecting boss 13, a sealing ring 14 is arranged in the groove ring 24, the sealing ring 14 is respectively abutted against the bottom end surface and the side edge of the groove ring 24, the sealing ring 14 adopts EPDM rubber, the structure optimization is carried out on the connecting structure and the joint surface of the pump body and the pump cover, the connection tightness is improved, meanwhile, the sealing performance is improved, the water leakage phenomenon at the position is avoided, the cooling cavity 12 is cooled by water in the drainage process, the drainage pump has better heat dissipation efficiency and the use effect is improved, the joint surface of the pump body 1 and the pump cover 2 is provided with a plurality of positioning bulges 15, the position corresponding to the pump cover 2 is provided with a positioning groove 23 matched with the positioning bulges 15, and the connection precision of the pump cover and the pump body is improved, the positioning operation difficulty during assembly is reduced, and the forming quality of the drainage pump is improved.
The water inlet 21 department is equipped with the filter screen (not shown in the figure), but filter screen mobile setting, and water inlet department is equipped with movable connecting rod (not shown in the figure), filter screen and connecting rod fixed mounting for filter, the lateral wall of delivery port 22 is equipped with the toper line, and the connecting pipe has been cup jointed in the outside of delivery port, and the clamp has been cup jointed in the outside of connecting pipe, its anticreep effect of toper line.
Referring to fig. 5-8, the sealing assembly includes a plunger 6 fitted on the shaft body of the rotating shaft 4, a second sealing ring 7 fitted on the outside of the plunger 6, and a first sealing ring 8 fitted on the outside of the second sealing ring 7, the outer surface of the plunger 6 is provided with a plurality of protrusions 61, the inner side wall of the second sealing ring 7 is provided with a connecting boss 71 clamped between two adjacent protrusions, the connecting boss 71 is clamped between the protrusions 61 to form a connecting relationship between the second sealing ring 7 and the plunger 6, the plunger 6 can be in interference fit with the rotating shaft 4 and synchronously rotate along with the rotating shaft, the connecting boss 71 is clamped at the protrusion 61 to form a step surface sealing structure to prevent sewage from entering the rotor cavity, the plunger 6 is reliably positioned on the rotating shaft, the plunger 6 has a positioning effect on the second sealing ring 7, the plunger and is in rotatable fit with the second sealing ring in the circumferential direction without affecting the rotation of the rotating shaft, the rear end of the plunger 6 extends to the rear end side of the second sealing ring 7, the length of the plunger 6 is large, the supporting and positioning effects of the plunger 6 on the sealing structure are improved, effective supporting on a second sealing ring and a first sealing ring is formed, the stability of the sealing structure is improved, the front part of the second sealing ring 7 is of a conical structure, the front end with the smaller conical structure extends forwards to be abutted against the shaft body of the rotating shaft 4, the front end of the conical structure can be in interference fit with the rotating shaft of the rotating shaft, the sealing effect is better, meanwhile, the contact area with the rotating shaft is small, the resistance to the rotating shaft is small, the influence on the rotation of the rotating shaft is avoided, the first sealing ring 8 comprises an inner ring body 81 sleeved outside the second sealing ring 7 and an outer ring body 82 sleeved outside the inner ring body 81, the outer peripheral surface of the outer ring body 82 is a conical surface, the smaller end of the outer ring body 82 faces the front side, the corresponding position of the inner wall of the rotor cavity 11 is of a conical surface structure matched with the outer ring body 82 in structure, and the conical surface is matched, so that the sealing effect is good, can prevent that liquid progress from reaching in the rotor chamber 11, the front end of inner circle body 81 is contradicted with the axle body of pivot 4, and is same, the front end of inner circle body 81 can correspond a interference fit with pivot axle body, there is better sealed effect, simultaneously it is little with the area of contact of pivot, resistance to the pivot is little, avoid influencing the rotation of pivot, the front portion of inner circle body 81 is equipped with the pyramis with 7 toper structure complex of second sealing washer, make seal assembly's compact structure, and simultaneously, improve the leakproofness that second sealing washer and inner circle body meet the department, make first sealing washer, have better sealed effect between the second sealing washer.
The outer surface of the ring body of the second sealing ring 7 is provided with an outer convex ring 71 which protrudes outwards, the outer convex ring 57 is abutted against the inner wall of the inner ring body 81, the outer convex ring 71 is in contact sealing to seal the contact surface of the first sealing ring and the second sealing ring, meanwhile, the second sealing ring supports and assists in positioning the first sealing ring to maintain the stability of the first sealing ring, a ring groove which is matched with the outer convex ring can be arranged at the corresponding position of the inner ring body 81 to improve the sealing effect and the stability of supporting the first sealing ring, so that the sealing assembly has good sealing performance and compact structure, the structural stability is good, the inner ring body 81 and the outer ring body 82 are connected through a connecting part 83 which is arranged in the radial direction, the rear side of the connecting part 83, which is close to the rotor, is provided with a rear connecting ring 84 which extends backwards, the rear end of the second sealing ring 7 is connected with a rear matching sleeve 72, the outer wall surface of the rear matching sleeve 72 is in contact with the inner wall surface of the rotor cavity 11, a matching groove 73 with a forward opening is formed between the rear matching sleeve 72 and the rear ring body of the second sealing ring 7, the rear end of the first sealing ring 8 and the rear connecting ring 83 extend into the matching groove 73, the outer wall surface of the rear connecting ring 83 contacts with the inner wall surface of the rear matching sleeve 72 to seal the position, the first sealing ring and the second sealing ring form a 'return' shaped sealing structure at the position, the sealing effect is good, a limit bump 831 is arranged at the rear end of the rear connecting ring 83, a limit groove 721 matched with the limit bump 831 is arranged at the corresponding position of the inner wall of the rear matching sleeve 72 to limit the position, the stability of the matching at the position is improved, the sealing effect is effectively ensured, a plurality of convex rings 722 are arranged on the outer wall surface of the rear matching sleeve 72, a convex ring groove matched with the convex ring 722 is arranged at the corresponding position of the inner wall of the rotor cavity 11 to form a sealing connection structure, the sealing structure is simple in structure and convenient to assemble, and no excessive resistance is caused by a rotating shaft in use, the effectual rotatability that has guaranteed the pivot, the effectual axial of interlacing in the opening part new castle of rotor chamber and radial ascending sealed, the equipment back has better sealed effect, the connection of the face of meeting of three subassembly is reliable, the face of meeting has better leakproofness, mutual support nature is good, can effectively prevent liquid invasion rotor chamber, improve rotor subassembly's waterproof nature, corrosion resistance, plunger 6, second sealing washer 7, first sealing washer 8 adopts EPDM rubber spare to make, the seal structure who constitutes has fine sealed effect, can effectually prevent that sewage from entering into the rotor chamber, the life of extension drain pump, and, this seal structure's simple structure, plunger 6, second sealing washer 7, first sealing washer 8 sets gradually, be convenient for assemble, combine closely each other, the contact surface is sealed and supports each other, little influence to the countershaft.
Referring to fig. 9 and 10, the stator assembly comprises a U-shaped stator 9 arranged at the rear side of the pump body, a bobbin 10 sleeved on the U-shaped stator 9, and a coil 101 on the bobbin, wherein a shell 102 is arranged outside the bobbin 101, a metal connecting sheet for connecting the coil is arranged on the shell 102, an opening of the U-shaped stator 9 is covered outside the rotor cavity 11, a abdicating groove 16 matched with the U-shaped stator 9 is arranged at the rear side of the pump body 1, the stacking thickness of the U-shaped stator 9 is 20mm, the stacking thickness of the stator is reduced, the power consumption is reduced, the practicability is strong, the heat productivity is reduced,
be equipped with the pressure sensor 103 that detects drainage pressure in the pump cover 2, preferred pressure sensor 103 sets up in the inner wall department of delivery port 22, and pressure sensor 103 connects the control system of drainage pump, and when pressure sensor detected 103 pressure value and became little and pressure pulsation amplitude and pressure pulsation frequency increase rapidly, then showed that the drainage has been accomplished, can in time the shutdown, reduced the running noise to reduced the drive electric energy, do benefit to the washing efficiency who improves dish washer.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiment according to the present invention are within the scope of the present invention.
Claims (10)
1. A high-flow acid-resistant alkaline washing liquid dish washing machine drainage pump comprises a pump body, a pump cover at the end part of the pump body, a rotor at the pump body, a rotating shaft, a stator component and an impeller, wherein the rotating shaft is arranged at the axis of the rotor,
the method is characterized in that: the joint surface of the pump body and the pump cover is provided with a connecting boss extending into the pump cover, the pump cover is provided with a groove ring matched with the connecting boss, a sealing ring is arranged in the groove ring and is respectively abutted against the bottom end surface and the side edge of the groove ring,
a rotor cavity with an opening facing the pump cover is arranged at the pump body, the rotor is arranged in the rotor cavity, a bearing assembly for supporting the inner end of the rotating shaft is arranged in the rotor cavity, a plastic-coated layer is arranged on the surface of the rotor, the rotating shaft is a 304 rotating shaft, a sealing assembly is arranged on the rotating shaft corresponding to the opening of the rotor cavity,
the pump body is provided with a cooling cavity at the periphery of the rotor cavity, the outer end of the rotating shaft extends to the pump cover, the impeller is arranged at the outer end part of the rotating shaft, the pump cover is internally provided with an impeller cavity matched with the impeller, the pump cover is provided with a water inlet and a water outlet, the water outlet is arranged along the axial direction of the pump cover, the inner diameters of the water inlet and the water outlet are consistent, the pump cover is internally provided with a pressure sensor for detecting the pressure of the discharged water,
the sealing assembly comprises a plunger sleeved on the shaft body of the rotating shaft, a second sealing ring sleeved outside the plunger, and a first sealing ring sleeved outside the second sealing ring, wherein a plurality of bulges are arranged on the outer surface of the plunger, a connecting boss clamped between two adjacent bulges is arranged on the inner side wall of the second sealing ring, the front part of the second sealing ring is of a conical structure, the front end with a smaller conical structure extends forwards to be abutted against the shaft body of the rotating shaft, the first sealing ring comprises an inner ring body sleeved outside the second sealing ring and an outer ring body sleeved outside the inner ring body, the outer peripheral surface of the outer ring body is contacted with the inner wall of the opening of the rotor cavity through a conical surface, the front end of the inner ring body is abutted against the shaft body of the rotating shaft, the inner ring body and the outer ring body are connected through a connecting part, a rear connecting ring extending backwards is arranged on the rear side of the connecting part close to the rotor, a rear matching sleeve is connected with the rear end of the second sealing ring, and the outer wall surface of the rear matching sleeve is contacted with the inner wall surface of the rotor cavity, a matching groove with a forward opening is formed between the rear matching sleeve and the rear ring body of the second sealing ring, the rear end of the first sealing ring and the rear connecting ring extend into the matching groove, and the outer wall surface of the rear connecting ring is in contact with the inner wall surface of the rear matching sleeve.
2. The high flow acid and alkali resistant dishwasher drain pump of claim 1, wherein the water outlet and the water inlet are communicated with the impeller cavity.
3. The discharge pump of high-flow acid-and alkali-resistant dishwasher of claim 1, wherein the joint surface of the pump body and the pump cover is provided with a plurality of positioning protrusions, and the pump cover is provided with positioning grooves corresponding to the positioning protrusions.
4. The high-flow acid-and alkali-resistant dishwasher drain pump according to claim 1, wherein the water inlet is arranged in a tangential direction of the pump cover, and the inner diameter of the water inlet is 20-30 mm.
5. The high flow acid and alkaline resistant dishwasher drain pump of claim 1, wherein the plunger, the second seal ring, the first seal ring and the seal ring are made of EPDM rubber.
6. The discharge pump of a high-flow acid and alkali resistant dishwasher according to claim 1, wherein the stator assembly comprises a U-shaped stator disposed at the rear side of the pump body, a bobbin sleeved on the U-shaped stator, and a coil on the bobbin, a housing is disposed outside the bobbin, a metal connecting sheet for connecting the coil is disposed on the housing, an opening of the U-shaped stator is covered outside the rotor cavity, a relief groove matched with the U-shaped stator is disposed at the rear side of the pump body, and the stack thickness of the U-shaped stator is 19-21 mm.
7. The high-flow acid-resistant alkali-resistant washing dishwasher drain pump according to claim 1, wherein the outer wall surface of the outer ring body is a conical surface, the smaller end of the outer ring body faces the front side, the front part of the inner ring body is provided with a conical part matched with the conical structure of the second seal ring, the inner wall structure at the opening of the rotor cavity is matched with the outer ring body structure, and the rear end of the plunger extends to the rear end side of the second seal ring.
8. The high-flow acid and alkali resistant dishwasher drain pump according to claim 1, wherein the outer wall surface of the rear fitting sleeve is provided with a plurality of convex rings, and a convex ring groove matched with the convex ring structure is arranged at the corresponding position of the inner wall of the rotor cavity.
9. The high-flow acid-resistant alkaline-wash dishwasher drain pump according to claim 1, wherein the rear end of the rear connecting ring is provided with a limit bump, and a matching groove matched with the limit bump structure is formed at the corresponding position of the inner wall of the rear matching sleeve.
10. The high flow acid and alkali resistant dishwasher drain pump according to claim 1, wherein the impeller has four blades, and the outer wall of the rotor chamber has a plurality of ribs along the axial direction of the rotation shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120275511.XU CN215672735U (en) | 2021-01-29 | 2021-01-29 | High-flow acid-resistant alkaline washing liquid dish-washing machine drainage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120275511.XU CN215672735U (en) | 2021-01-29 | 2021-01-29 | High-flow acid-resistant alkaline washing liquid dish-washing machine drainage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215672735U true CN215672735U (en) | 2022-01-28 |
Family
ID=79950601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120275511.XU Expired - Fee Related CN215672735U (en) | 2021-01-29 | 2021-01-29 | High-flow acid-resistant alkaline washing liquid dish-washing machine drainage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215672735U (en) |
-
2021
- 2021-01-29 CN CN202120275511.XU patent/CN215672735U/en not_active Expired - Fee Related
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Granted publication date: 20220128 |