CN214499444U - Booster pump of split type pump body - Google Patents
Booster pump of split type pump body Download PDFInfo
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- CN214499444U CN214499444U CN202023055310.3U CN202023055310U CN214499444U CN 214499444 U CN214499444 U CN 214499444U CN 202023055310 U CN202023055310 U CN 202023055310U CN 214499444 U CN214499444 U CN 214499444U
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Abstract
The utility model relates to a booster pump of split type pump body, the sealed point that solves prior art existence is many, the iteration nature is poor, use inconvenient scheduling problem, the technical scheme of adoption: the pump body includes pump body seat and pump core, sets up bottom confined pump core assembly chamber in the pump body seat, and the pump core assembly is in the pump core assembly chamber, the both ends of pump core are concave respectively and are formed suction chamber and extrusion chamber, and sealed isolation between suction chamber and the extrusion chamber, suction chamber and the bottom cooperation in pump core assembly chamber, the lateral wall of pump core set up pump core water inlet and pump core delivery port respectively, pump core water inlet and suction chamber cooperation, pump core delivery port and extrusion chamber cooperation. The method has the following effects: according to different hydraulic requirements, only a pump core die is replaced and different pump cores are produced by using one set of pump base body, so that the die sinking cost is greatly saved, the suction chamber and the extrusion chamber are isolated by the sealing element, the structural design is ingenious, the assembly is simple and convenient, and the sealing effect is good.
Description
Technical Field
The utility model relates to a booster pump especially relates to a booster pump of split type pump body.
Background
In the prior art, a pump body seat and a pump core on a booster pump are of an integrated structure, the integrated structure is called as a pump body, an opening is arranged on the pump body corresponding to a suction chamber, the opening is matched with a sealing cover, and a sealing structure is arranged between the sealing cover and the pump body.
For such a canned motor pump of the related art, there are the following problems:
1. the sealing structure is relatively more (the sealing position at least comprises the position between the pump body and the sealing cover, the position between the pump body and the motor shell, the position between the pump body and the water inlet pipe section, the position between the pump body and the water outlet pipe section and the position between the pump body and the corresponding part of the flow control switch), and the sealing reliability is relatively poor;
2. the interchangeability and the iteration are poor, and when the pump core is applied to pump cores with different shapes and specifications according to different hydraulic performance requirements, a corresponding pump body (caused by the fact that a pump body seat and the pump core are of an integrated structure) and a corresponding sealing cover (caused by the fact that the pump core is of different structures and different opening sizes) need to be arranged;
3. different pump bodies are equipped, different dies need to be replaced, and the pump bodies are relatively complex, the die opening cost is high, and the die opening period is long;
4. the assembly efficiency is relatively low due to more assembly structures and sealing structures;
5. the supporting column for connecting the pump body and the motor shell and the pump body are of a split structure, so that the assembly precision and stability are relatively poor;
6. to the booster pump of suspension type, the position setting that current pump body and pump case are connected is in water inlet pipe section or play water pipe section position, when openly seeing, and the connection position is sheltered by water inlet pipe section or play water pipe section, and on visual effect, comparatively clean and tidy, but, when the booster pump goes wrong, need pull down whole booster pump, just can dismantle the pump body from the pump case, maintains the change again, and it brings inconvenience to change work for the maintenance.
Disclosure of Invention
An object of the utility model is to solve the above-mentioned problem that prior art exists and provide a booster pump of split type pump body, constitute by two parts of pump body seat and pump core, set up one end closed one end open-ended pump core assembly chamber on the pump body, the pump core assembly is in pump core assembly chamber, according to the water conservancy requirement of difference, can use one set of pump body, only change pump core mould, produce different pump cores can, for practicing thrift the die sinking cost greatly, in addition, keep apart suction chamber and extrusion chamber through seal structure, structural design is ingenious, the assembly is simple and convenient, and sealed effectual, and the seal part of the whole pump body very reduces, for improving pump operating stability greatly.
The above technical purpose of the present invention is mainly solved by the following technical solutions: the booster pump of the split type pump body comprises a pump shell and a pump body arranged in the pump shell, wherein a water inlet pipe section and a water outlet pipe section are arranged on the pump body, the pump body is matched with an impeller and drives the motor of the impeller, and the pump body, the impeller and the motor are arranged in the pump shell, the booster pump is characterized in that the pump body comprises a pump body seat and a pump core, a pump core assembly cavity with a closed bottom end is arranged in the pump body seat, the pump core is assembled in the pump core assembly cavity, a water outlet of the water inlet pipe section and a water inlet of the water outlet pipe section are arranged on the side wall of the pump core assembly cavity, two ends of the pump core are respectively concave inwards to form a suction chamber and a pressing chamber, the suction chamber and the pressing chamber are sealed and isolated, the suction chamber is matched with the bottom of the pump core assembly cavity, a pump core water inlet and a pump core water outlet are respectively arranged on the side wall of the pump core, and the pump core water inlet is matched with the suction chamber, the pump core water outlet is matched with the extrusion chamber, the pump core water inlet is communicated with the water outlet of the water inlet pipe section, and the pump core water outlet is communicated with the water inlet of the water outlet pipe section. The pump core assembly cavity with one closed end and one open end is formed in the pump body, the pump core is assembled in the pump core assembly cavity, according to different hydraulic requirements, only a pump core mold is replaced and different pump cores are produced by using one set of pump base body, the mold opening cost is greatly saved, a sealing element between a sealing cover and the pump body is not needed, and the assembly efficiency, the sealing performance and the bearing stability are favorably improved.
As further improvement and supplement to the above technical scheme, the utility model discloses a following technical measure:
to the pump body seat and the pump core of components of a whole that can function independently, can adopt the welded mode to reach the effect of sealed isolation suction chamber and extrusion chamber, also can set up the mode of sealed pad and reach sealed isolation effect, wherein with setting up sealed the pad as the good, specifically:
set up location limit structure in the pump core assembly chamber, set up the spacing cooperation structure in location on the pump core, location limit structure with the spacing cooperation structure in location contradicts the cooperation, set up sealed the pad between pump body seat and the pump core, sealed the centre gripping of filling up is in location limit structure with between the spacing cooperation structure in location, location limit structure is right the pump core has the rotation-proof effect, sealed the pad messenger the suction chamber with the extrusion chamber is only in the axle center position intercommunication of pump core, and makes the suction chamber with the extrusion chamber is in form sealed the isolation between pump body seat and the pump core. The arrangement of the positioning and limiting structure is also beneficial to preventing the pump core from rotating.
According to the technical scheme, the positioning anti-rotation structure comprises an anti-rotation convex ring, the anti-rotation convex ring is arranged at the bottom of the pump core assembly cavity, the anti-rotation convex ring and an assembly groove formed between the side walls of the pump core assembly cavity are formed, the side wall of the pump core is inserted into the assembly groove, the outer wall of the convex ring is matched with the inner surface of the side wall of the pump core, the outer surface of the side wall of the pump core is matched with the inner wall of the pump core assembly cavity, the positioning limiting matching structure comprises a step arc-shaped surface which is arranged in the circumferential direction on the side wall of the pump core, and the step arc-shaped surface is clamped with the top surface of the anti-rotation convex ring to form a sealing gasket.
Prevent changeing the tab portion on the bulge loop, prevent changeing the tab portion with prevent changeing the bulge loop structure as an organic whole, prevent changeing the tab portion and be the circular arc piece, prevent changeing the tab portion with the lateral wall radian adaptation of pump core, prevent changeing the tab portion and insert the vacancy of the lateral wall of pump core, prevent changeing and set up the medium circulation mouth on the tab, set up the breach on the lateral wall of pump core, the breach with prevent changeing the tab cooperation, the breach the medium circulation mouth communicates with between pump core water inlet or the pump core delivery port three all, prevent changeing the tip of tab with the cooperation of contradicting of the roof of suction chamber, prevent changeing the bulge loop with prevent forming smooth consistent curved surface between the top surface of changeing the tab, sealing backing ring sets up on the curved surface. Prevent changeing the inserted sheet portion and further improve the effect of preventing changeing of pump core, prevent changeing the top that the inserted sheet portion can be smooth with sealed pad guide prevent changeing the inserted sheet portion moreover, make the structure that sets up sealed pad more simple, sealed effect is better.
In order to further improve the anti-rotation effect, an anti-rotation bulge is further arranged on the anti-rotation convex ring, the anti-rotation bulge faces to the radial extension of the opening direction of the pump core assembly cavity, and the sealing gasket covers the anti-rotation bulge.
Prevent changeing the effect for better improvement, also be favorable to improving the intensity of pump core, prevent changeing and set up radial anti-rotating groove in the arch, set up radial strengthening rib on the pump core, the strengthening rib sets up in the aspiration chamber, the corresponding position card of strengthening rib is gone into prevent changeing the groove, sealed backing ring covers on the corresponding position of strengthening rib, prevent changeing the both sides of inserted sheet respectively with adjacent the strengthening rib forms prevents changeing the cooperation.
The water inlet pipe section and the water outlet pipe section are integrated with the pump body seat, a flow switch is arranged on the pump body seat and comprises a fluid sensing part and a switch control part, the fluid sensing part is arranged in the water inlet pipe section or the water outlet pipe section, and the switch control part is arranged on the pump body seat and corresponds to the fluid sensing part. The water inlet pipe section and the water outlet pipe section are integrated with the pump body seat, so that sealing points are reduced, and in the prior art, two sealing points exist at the position. To this technical scheme, sealed effect very improves, and pump operating stability also very improves, has reduced the assembly process moreover, has improved assembly efficiency.
The pump body seat is provided with a connecting column, and the pump body seat and the connecting column are of an integrated structure. The connecting column with the integrated structure is arranged, so that the motor can be fixed on the pump body seat through the bolt, the connection is more reliable, the assembly is convenient, and the assembly efficiency is improved. The problem of prior art adopt self-tapping screw fastening to exist the fastening internal force not enough and influence the assembly reliability is solved.
The pump shell comprises a pump shell seat and a pump shell cover, the pump body seat is arranged in the pump shell seat, the pump body seat and the pump shell seat are fixed through a connecting piece, and the connecting piece is arranged on the side direction of the pump body seat and the side direction of the pump shell seat, namely the connecting piece avoids the water inlet pipe section or the water outlet pipe section. With pump body seat and pump case seat lateral direction connection, dodge into water pipe section or play water pipe section, when the booster pump breaks down, need not to dismantle the pump case seat, just can be convenient dismantle the pump body seat from the pump case seat get off, maintain the change, after the maintenance is changed, the repacking is to the pump case seat on.
The utility model discloses beneficial effect who has: 1. the pump core assembly cavity with one closed end and one open end is formed in the pump body, the pump core is assembled in the pump core assembly cavity, according to different hydraulic requirements, only a pump core mold is replaced and different pump cores are produced by using one set of pump base body, the mold opening cost is greatly saved, the suction chamber and the extrusion chamber are isolated through a sealing element, the structural design is ingenious, the assembly is simple and convenient, and the sealing effect is good. 2. The positioning and limiting structure is convenient for limiting and stopping rotation of the pump core on one hand; on the other hand conveniently sets up sealed the pad, through the centre gripping of location limit structure and the spacing cooperation structure in location, can reach fine sealed effect promptly, can also absorb location limit structure and the spacing processing, the assembly error of cooperation structure in location, be favorable to production, processing and assembly. 3. Through the setting of preventing changeing the inserted sheet portion, ingenious setting sealed the pad in the boundary position of suction chamber and extrusion chamber, make pump core and pump body seat structure simpler, also more convenient assembly. 4. Prevent changeing bellied structure and being favorable to the strengthening rib to run through, can make sealed the pad again to preventing changeing the cooperation position between protruding and the strengthening rib and seal, reach the sealed effect of multiple spot through a sealed pad. 5. A plurality of sealing point positions on the booster pump are reduced, so that the assembly is convenient, and the operation stability of the pump can be provided. 6. The connecting column with the integrated structure is arranged, so that the motor can be fixed on the pump body seat through the bolt, the connection is more reliable, the assembly is convenient, and the assembly efficiency is improved. 7. The pump body seat and the pump shell seat are laterally connected to avoid the water inlet pipe section or the water outlet pipe section, so that the pump body seat and the pump shell seat are convenient to disassemble, maintain and replace.
Drawings
Fig. 1 is a schematic diagram of an explosive structure of the present invention.
Fig. 2 is a schematic view of the structure of fig. 1 from another view angle.
Fig. 3 is a schematic structural diagram of the pump body seat of the present invention.
Fig. 4 is a schematic view of the structure of fig. 3 from another perspective.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
Example (b): as shown in fig. 1-4, the booster pump of the split pump body comprises a pump shell and a pump body arranged in the pump shell, wherein a water inlet pipe section and a water outlet pipe section are arranged on the pump body, the pump body is matched with an impeller to drive a motor of the impeller, and the pump body, the impeller and the motor are arranged in the pump shell.
The following are improvements, in particular:
the pump body includes pump body seat 1 and pump core 2, set up bottom confined pump core assembly chamber in the pump body seat, the pump core assembly is in the pump core assembly chamber, the delivery port of intake pipe section 13 and the water inlet of delivery pipe section 15 all set up on the lateral wall in pump core assembly chamber, the both ends of pump core indent formation suction chamber 22 and extrusion chamber 21 respectively, suction chamber with sealed isolation between the extrusion chamber, suction chamber with the bottom cooperation in pump core assembly chamber, the lateral wall of pump core sets up pump core water inlet (breach 23 promptly) and pump core delivery port 24 respectively, the pump core water inlet with suction chamber cooperation, the pump core delivery port with extrusion chamber cooperation, the pump core water inlet with the delivery port intercommunication of intake pipe section, the pump core delivery port with the water inlet intercommunication of delivery pipe section. The pump core assembly cavity with one closed end and one open end is formed in the pump body, the pump core is assembled in the pump core assembly cavity, according to different hydraulic requirements, only a pump core mold is replaced and different pump cores are produced by using one set of pump base body, the mold opening cost is greatly saved, a sealing element between a sealing cover and the pump body is not needed, and the assembly efficiency, the sealing performance and the bearing stability are favorably improved.
To the pump body seat and the pump core of components of a whole that can function independently, can adopt the welded mode to reach the effect of sealed isolation suction chamber and extrusion chamber, also can set up the mode of sealed pad and reach sealed isolation effect, wherein with setting up sealed the pad as the good, specifically: set up location limit structure in the pump core assembly chamber, set up the spacing cooperation structure in location on the pump core, location limit structure with the spacing cooperation structure in location contradicts the cooperation, set up sealed pad 3 between pump body seat and the pump core, sealed pad centre gripping is in location limit structure with between the spacing cooperation structure in location, location limit structure is right the pump core has prevents changeing, sealed pad messenger the suction chamber with the extrusion chamber is only in the axle center position intercommunication of pump core, and makes the suction chamber with the extrusion chamber is in form sealed the isolation between pump body seat and the pump core. The arrangement of the positioning and limiting structure is also beneficial to preventing the pump core from rotating.
Above-mentioned technical scheme's further optimization, location rotation-proof structure is including preventing changeing bulge loop 12, it sets up to prevent changeing the bulge loop the bottom in pump core assembly chamber, prevent changeing the bulge loop with form assembly groove 14 between the lateral wall in pump core assembly chamber, the lateral wall 25 of pump core inserts the assembly groove, the outer wall of bulge loop with the internal surface cooperation of the lateral wall of pump core, the surface of the lateral wall of pump core with the inner wall cooperation in pump core assembly chamber, the spacing cooperation structure of location is including setting up the step arcwall face of circumference setting on the lateral wall of pump core, step arcwall face 26 with prevent changeing the top surface centre gripping of bulge loop sealed the pad.
Prevent changeing the bulge loop on have and prevent changeing inserted sheet portion 12-1, prevent changeing the inserted sheet portion with prevent changeing the bulge loop structure as an organic whole, prevent changeing the inserted sheet portion and be the circular arc piece, prevent changeing the inserted sheet portion with the lateral wall radian adaptation of pump core, prevent changeing the inserted sheet portion and insert the vacant part of the lateral wall of pump core, prevent changeing and set up medium circulation opening 12-11 on the inserted sheet, set up breach 23 on the lateral wall of pump core, the breach with prevent changeing the inserted sheet cooperation, the breach communicate between medium circulation opening and pump core water inlet or the pump core delivery port three, prevent changeing the tip of inserted sheet with the cooperation of contradicting of the roof of suction chamber, prevent changeing the bulge loop with prevent forming level and smooth coherent curved surface between the top surface of changeing the inserted sheet, the sealing backing ring sets up on the curved surface. Prevent changeing the inserted sheet portion and further improve the effect of preventing changeing of pump core, prevent changeing the top that the inserted sheet portion can be smooth with sealed pad guide to preventing changeing the inserted sheet portion moreover, make the structure that sets up sealed pad simpler, sealed effect is better.
In order to further improve the anti-rotation effect, the anti-rotation convex ring is further provided with an anti-rotation bulge 12-2, the anti-rotation bulge extends radially towards the opening direction of the pump core assembly cavity, and the sealing gasket covers the anti-rotation bulge.
Prevent changeing the effect for better improvement, also be favorable to improving the intensity of pump core, prevent changeing and set up radial anti-rotation groove 12-21 on the arch, set up radial strengthening rib 27 on the pump core, the strengthening rib sets up in the aspiration chamber, the corresponding position card of strengthening rib is gone into prevent changeing the groove, the sealing gasket ring covers on the corresponding position of strengthening rib, prevent changeing the both sides of inserted sheet respectively with adjacent the strengthening rib forms prevents changeing the cooperation.
The pump body seat is provided with a connecting column 16, and the pump body seat and the connecting column are of an integral structure. The connecting column with the integrated structure is arranged, so that the motor can be fixed on the pump body seat through the bolt, the connection is more reliable, the assembly is convenient, and the assembly efficiency is improved. The problem of prior art adopt self-tapping screw fastening to exist the fastening internal force not enough and influence the assembly reliability is solved.
The pump shell comprises a pump shell seat 8 and a pump shell cover 6, the pump body seat is arranged in the pump shell seat, the pump body seat and the pump shell seat are fixed through a connecting piece 7, and the connecting piece is arranged on the lateral sides of the pump body seat and the pump shell seat, namely the connecting piece avoids the water inlet pipe section or the water outlet pipe section. With pump body seat and pump case seat lateral direction connection, dodge into water pipe section or play water pipe section, when the booster pump breaks down, need not to dismantle the pump case seat, just can be convenient dismantle the pump body seat from the pump case seat get off, maintain the change, after the maintenance is changed, the repacking is to the pump case seat on.
In order to increase the connection reliability of the connecting piece 7 with the pump casing seat and the pump body seat, the connecting piece 7 is arranged on both sides of the pump casing seat and the pump body seat.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. In the above embodiments, the present invention may be variously modified and changed. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The booster pump of the split type pump body comprises a pump shell and a pump body arranged in the pump shell, wherein a water inlet pipe section and a water outlet pipe section are arranged on the pump body, the pump body is matched with an impeller and drives the motor of the impeller, and the pump body, the impeller and the motor are arranged in the pump shell, the booster pump is characterized in that the pump body comprises a pump body seat and a pump core, a pump core assembly cavity with a closed bottom end is arranged in the pump body seat, the pump core is assembled in the pump core assembly cavity, a water outlet of the water inlet pipe section and a water inlet of the water outlet pipe section are arranged on the side wall of the pump core assembly cavity, two ends of the pump core are respectively concave inwards to form a suction chamber and a pressing chamber, the suction chamber and the pressing chamber are sealed and isolated, the suction chamber is matched with the bottom of the pump core assembly cavity, a pump core water inlet and a pump core water outlet are respectively arranged on the side wall of the pump core, and the pump core water inlet is matched with the suction chamber, the pump core water outlet is matched with the extrusion chamber, the pump core water inlet is communicated with the water outlet of the water inlet pipe section, and the pump core water outlet is communicated with the water inlet of the water outlet pipe section.
2. The booster pump of split type pump body of claim 1, characterized in that set up location limit structure in the pump core assembly chamber, set up location limit cooperation structure on the pump core, location limit structure with the conflict cooperation of location limit cooperation structure, set up sealed the pad between pump body seat and the pump core, sealed the pad centre gripping in location limit structure with between the location limit cooperation structure, location limit structure is right the pump core has the rotation-proof effects, sealed pad makes the suction chamber with the extrusion chamber is only in the axle center position intercommunication of pump core, and makes the suction chamber with the extrusion chamber is in form sealed the isolation between pump body seat and the pump core.
3. The booster pump of split type pump body of claim 2, characterized in that location rotation-proof structure is including preventing changeing the bulge loop, it sets up to prevent changeing the bulge loop the bottom in pump core assembly chamber, prevent changeing the bulge loop with form the assembly groove between the lateral wall in pump core assembly chamber, the lateral wall of pump core inserts the assembly groove, the outer wall of bulge loop with the internal surface cooperation of the lateral wall of pump core, the surface of the lateral wall of pump core with the inner wall cooperation in pump core assembly chamber, the spacing cooperation structure in location is including setting up the step arcwall face of circumference setting on the lateral wall of pump core, the step arcwall face with prevent changeing the top surface centre gripping of bulge loop sealed the pad.
4. The booster pump of split type pump body of claim 3, characterized in that prevent rotating the bulge loop on have prevent changeing the inserted sheet portion, prevent changeing the inserted sheet portion with prevent changeing the bulge loop structure as an organic whole, prevent changeing the inserted sheet portion and be the circular arc piece, prevent changeing the inserted sheet portion with the lateral wall radian adaptation of pump core, prevent changeing the inserted sheet portion and insert the vacant part of the lateral wall of pump core, prevent changeing and set up the medium circulation mouth on the inserted sheet, set up the breach on the lateral wall of pump core, the breach with prevent changeing the inserted sheet cooperation, the breach communicate between medium circulation mouth and pump core water inlet or the pump core delivery port three, prevent changeing the tip of inserted sheet with the conflict cooperation of the roof of suction chamber, prevent changeing the bulge loop with prevent forming smooth coherent curved surface between the top surface of changeing the inserted sheet, the sealing gasket ring sets up on the curved surface.
5. The booster pump of the split type pump body according to claim 4, wherein the rotation preventing convex ring is further provided with a rotation preventing protrusion, the rotation preventing protrusion extends radially toward the opening direction of the pump core assembling cavity, and the sealing gasket covers the rotation preventing protrusion.
6. The booster pump of split type pump body of claim 5, characterized in that prevent setting up radial anti-rotation groove on the arch, set up radial strengthening rib on the pump core, the strengthening rib sets up in the aspiration chamber, the corresponding position card of strengthening rib goes into prevent rotation groove, the sealing gasket ring cover is in on the corresponding position of strengthening rib, prevent changeing the both sides of inserted sheet respectively with adjacent strengthening rib formation prevent changeing the cooperation.
7. The booster pump of the split pump body according to any one of claims 1 to 6, wherein the water inlet pipe section and the water outlet pipe section are integrated with the pump body seat, a flow switch is disposed on the pump body seat, the flow switch includes a fluid sensing part and a switch control part, the fluid sensing part is disposed in the water inlet pipe section or the water outlet pipe section, and the switch control part is disposed on the pump body seat and disposed corresponding to the fluid sensing part.
8. The booster pump of the split pump body according to any one of claims 1 to 6, wherein a connection column is provided on the pump body seat, and the pump body seat and the connection column are of an integral structure.
9. The booster pump of the split pump body of claim 7, wherein the pump body seat is provided with a connection column, and the pump body seat and the connection column are of an integral structure.
10. The booster pump of the split pump body according to any one of claims 1 to 6, wherein the pump housing includes a housing seat and a housing cover, the housing seat is disposed in the housing seat, the housing seat and the housing seat are fixed by a connecting member, and the connecting member is disposed laterally of the housing seat and the housing seat, that is, the connecting member avoids the water inlet pipe section or the water outlet pipe section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023055310.3U CN214499444U (en) | 2020-12-17 | 2020-12-17 | Booster pump of split type pump body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023055310.3U CN214499444U (en) | 2020-12-17 | 2020-12-17 | Booster pump of split type pump body |
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| Publication Number | Publication Date |
|---|---|
| CN214499444U true CN214499444U (en) | 2021-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023055310.3U Active CN214499444U (en) | 2020-12-17 | 2020-12-17 | Booster pump of split type pump body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214499444U (en) |
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2020
- 2020-12-17 CN CN202023055310.3U patent/CN214499444U/en active Active
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