A coolant storage and circulation device

Abstract

The utility model discloses a kind of cooling liquid storage and circulating device, including pedestal (1), storage cavity (2), circulating drive component (3), flow passage integrated plate (4) and quick coupler group (5), the device is by welding into integral carrier with storage cavity and pedestal, eliminates the assembly gap and sealing requirement between storage tank and pedestal in traditional split structure.

Description

Technical Field

[0001] This utility model relates to the field of liquid storage and circulation system technology, and in particular to a coolant storage and circulation device. Background Technology

[0002] Coolant storage and circulation devices are key components used to maintain stable temperatures in equipment or systems during operation, and are widely used in industrial processing, electronic heat dissipation, new energy vehicles, and precision instruments. These devices typically include a storage tank, a circulation pump, a piping system, and necessary connection interfaces. They achieve effective temperature control of the target system by continuously circulating coolant to remove heat.

[0003] Existing coolant storage and circulation devices mostly adopt a split structure, with the storage tank and circulation pump installed independently and connected by external pipelines to form a circulation loop. This type of structure has numerous pipeline connection points in practical applications, causing the overall sealing performance to rely on the reliability of multiple interfaces. Under long-term operation or vibration environments, there is a risk of coolant leakage. Furthermore, the split layout occupies a large space, which is not conducive to integrated placement in compact equipment. The assembly process requires connecting each component individually, resulting in relatively many installation steps and impacting on-site assembly efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a coolant storage and circulation device, which solves the problems mentioned in the background art.

[0005] This utility model is implemented as follows: a coolant storage and circulation device includes a base, a storage chamber, a circulation drive component, a flow channel integrated plate, and a quick-connect coupling assembly, wherein:

[0006] The base has a rectangular plate structure with a sunken installation area on its upper surface for supporting and fixing other main components. The base is pre-embedded with a network of reinforcing ribs to enhance overall rigidity and resist mechanical vibration during operation. The base has through-holes at its four corners for bolting to external equipment or frames.

[0007] The liquid storage chamber is a box-type container with an open top. Its bottom outline perfectly matches the sunken installation area on the upper surface of the base. The liquid storage chamber is fixedly connected to the upper surface of the base by welding to form an integral main structure that cannot be disassembled. The side wall of the liquid storage chamber is provided with an observation window, which is made of pressure-resistant transparent material and is fixed to the side wall by a ring-shaped metal pressure ring screwed into the side wall. The top edge of the liquid storage chamber is provided with a ring-shaped flange for subsequent sealing and docking with other components.

[0008] The circulating drive component includes a pump housing, an impeller rotor, a drive shaft, and a bearing housing. The pump housing is a cylindrical shell with an inlet at its bottom that communicates with the bottom of the liquid storage chamber, and an outlet on its side. The pump housing is welded to the outer surface of the side wall of the liquid storage chamber via a bottom flange. The impeller rotor is placed in the internal cavity of the pump housing, and its hub center is connected to one end of the drive shaft via a keyway. The other end of the drive shaft extends out of the rear end cover of the pump housing and is connected to the output shaft of an external motor via a coupling. The bearing housing is fitted onto the section of the drive shaft located outside the pump housing, and its outer ring is interference-fitted with the inner hole of the rear end cover of the pump housing to support the rotational movement of the drive shaft.

[0009] The flow channel integrated plate is a rectangular metal block, one side of which is attached to the top flange of the liquid storage cavity and locked with bolts. An elastic sealing gasket is sandwiched between the contact surfaces of the two. The flow channel integrated plate has three isolated liquid channels inside, namely a return channel, a replenishment channel and a bypass channel. One end of the return channel opens to the bottom surface of the flow channel integrated plate and communicates with the internal space of the liquid storage cavity, while the other end opens to one side of the top surface of the flow channel integrated plate. One end of the replenishment channel opens to the bottom surface of the flow channel integrated plate near the edge and communicates with the upper space of the liquid storage cavity, while the other end opens to the other side of the top surface of the flow channel integrated plate. Both ends of the bypass channel open to the top surface of the flow channel integrated plate to establish a short-circuit circulation path under specific operating conditions. Each channel opening is provided with an annular groove for embedding an O-ring seal.

[0010] The quick-connector assembly includes three independent connector bodies, each corresponding to one of the three channel openings on the top surface of the flow channel integrated plate. Each connector body is a stepped cylindrical structure, with its smaller diameter section inserted into the corresponding channel opening and its larger diameter section abutting against the top surface of the flow channel integrated plate. The outer wall of the connector body is provided with external threads, which engage with and fix it to the internal threaded hole provided at the corresponding position on the top surface of the flow channel integrated plate. The inner hole of the connector body is connected to the corresponding channel, and its top end is provided with a standard quick-connect interface for quick connection to external cooling pipes.

[0011] Optionally, the lower surface of the base is provided with shock-absorbing feet, which are molded from rubber material and have metal inserts on their tops. The inserts are fixed to the lower surface of the base by countersunk screws. The bottom of the feet is a flat contact surface to increase the coefficient of friction with the mounting surface.

[0012] Optionally, the liquid storage cavity is equipped with a liquid level sensing rod, which is a slender cylinder and fixed vertically to the inner surface of the cavity side wall. The outer surface of the sensing rod is covered with an insulating layer, on which multiple conductive contacts are arranged at intervals. Each contact is connected to an external alarm circuit after passing through the cavity wall with a lead wire. When the coolant level drops to the height of a certain contact, a corresponding electrical signal is triggered and output.

[0013] Optionally, a filter screen is provided at the liquid inlet of the pump body shell. The filter screen is a hemispherical metal wire braided structure with annular buckles at the opening edge. The buckles are fitted and fixed with annular grooves provided on the inner wall of the liquid inlet. The mesh size of the filter screen is selected according to the particle size range of the coolant impurities and is used to intercept solid particles from entering the pump body.

[0014] Optionally, a mechanical seal is provided between the drive shaft and the rear end cover of the pump housing. The seal includes a stationary ring, a rotating ring, and a spring. The outer ring of the stationary ring is interference-fitted with the inner hole of the rear end cover, and the inner ring of the rotating ring is clearance-fitted with the outer wall of the drive shaft. One end of the spring abuts against the back of the rotating ring, and the other end abuts against the inner boss of the rear end cover to provide axial clamping force and ensure that the end faces of the rotating ring and the stationary ring are tightly fitted.

[0015] Optionally, the top surface of the flow channel integrated plate is provided with a guide boss, which is arranged around the three channel openings to guide the quick-connect connector body to be accurately aligned; the height of the guide boss is slightly higher than the thickness of the large diameter section of the connector body to ensure that the connector does not deviate during screwing in.

[0016] Optionally, the outer wall of the quick-connect connector body is provided with an anti-loosening marking line. The marking line extends axially. When the connector body is tightened in place, the marking line is aligned with the corresponding engraved line on the top surface of the flow channel integrated plate, which makes it easy for the operator to visually confirm the installation status.

[0017] Optionally, the outer wall of the liquid storage cavity is provided with a heat dissipation fin assembly, which is composed of multiple parallel thin plates. Each thin plate extends in the vertical direction, and its root is integrally cast with the outer wall of the cavity. The fin spacing is optimized according to the natural convection heat transfer efficiency to enhance the heat dissipation capacity of the cavity surface.

[0018] Optionally, a cable fixing clip is provided on one side of the base. The fixing clip is a U-shaped metal piece with through holes at both ends, which is fixed to the side wall of the base by screws. A rubber pad is provided on the inner side of the fixing clip to hold and protect the power line and signal line led out from the pump body.

[0019] Optionally, the flow channel integrated plate is provided with a pressure detection interface on its side. This interface is an internally threaded blind hole for temporary connection of a pressure gauge or sensor to monitor the working pressure of the circulation system. The interface is normally sealed by a sealing plug, and the outer end of the plug is provided with a hexagonal tightening part.

[0020] The coolant storage and circulation device provided by this utility model has the following beneficial effects:

[0021] This device eliminates the assembly gap and sealing requirements between the liquid storage chamber and the base, which are present in traditional split structures, by welding the liquid storage chamber and the base into a single load-bearing body. The circulation drive component is directly fixed to the side wall of the liquid storage chamber, shortening the distance between the pump inlet and the liquid storage space and eliminating the need for intermediate connecting hoses. The flow channel integrated plate integrates the originally scattered return, replenishment, and bypass pipelines into a built-in channel, retaining only three standardized quick-connect interfaces for external connection, significantly reducing the number of external pipelines and the types of connectors. The quick-connect connector assembly adopts a double sealing structure of threaded tightening and sealing ring, combined with guide bosses and anti-loosening marking lines, to ensure a firm connection and easy inspection. The base's built-in reinforcing ribs and bottom shock-absorbing feet work together to effectively suppress structural resonance during equipment operation and reduce the probability of seal failure due to vibration. The overall layout is compact, with the height dimension reduced by more than 30% compared to traditional split structures, making it suitable for installation environments with limited space. During assembly, only three main steps are required: base positioning, flow channel plate bolt tightening, and connector screwing in. There is no need to connect pipelines section by section, significantly shortening on-site installation time. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a coolant storage and circulation device according to the present invention;

[0023] Figure 2 This is an exploded view of the coolant storage and circulation device according to an embodiment of this application;

[0024] Figure 3 This is a partial cross-sectional view of the flow channel integrated plate and quick-connect coupling assembly of a coolant storage and circulation device according to the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Base; 2. Liquid storage chamber; 3. Circulation drive component; 4. Flow channel integrated plate; 5. Quick-connect coupling assembly; 6. Recessed installation area; 7. Reinforcing rib network; 8. Positioning through hole; 9. Observation window; 10. Annular metal pressure ring; 11. Annular flange face; 12. Pump body shell; 13. Impeller rotor; 14. Drive shaft; 15. Bearing housing; 16. Liquid inlet; 17. Liquid outlet; 18. Flange; 19. Coupling; 20. Return channel; 21. Liquid replenishment channel; 22. Bypass channel; 23. Elastic sealing gasket; 24. O-ring seal; 25. Connector body; 26. Standard quick-connect interface; 27. Vibration damping feet; 28. Liquid level sensing rod; 29. ​​Filter screen; 30. Mechanical seal; 31. Guide boss; 32. Anti-loosening marking line; 33. Heat dissipation fin assembly; 34. Cable clamp; 35. Pressure detection interface. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1 to 3 This utility model provides a coolant storage and circulation device, the overall structure of which is composed of a base 1, a storage chamber 2, a circulation drive component 3, a flow channel integrated plate 4, and a quick-connect coupling assembly 5. The components are mechanically connected and sealed through welding, threaded engagement, flange tightening, or interference fit, forming a highly integrated, one-piece structure. This eliminates the large number of exposed pipes and interfaces found in traditional split structures, reducing the risk of leakage, while also reducing the space occupied by the equipment and simplifying the assembly process.

[0029] The base 1 is a rectangular plate-shaped metal component, molded in one piece from cast aluminum or high-strength engineering plastic. A recessed mounting area 6 is located in the central region of its upper surface. The outline of this area perfectly matches the bottom of the liquid storage cavity 2, serving to support and limit the movement of the liquid storage cavity 2. A reinforcing rib network 7 is pre-embedded inside the base 1. This network is distributed in a grid pattern, with ribs at least three millimeters thick. Circular reinforcing nodes are located at the intersections of the ribs to improve overall bending stiffness and vibration resistance. Positioning through holes 8 are located at the four corners of the base 1, penetrating both the upper and lower surfaces. The inner walls of each through hole are chamfered to facilitate the insertion of external bolts for fixing to the frame or equipment base plate. The base 1 has four shock-absorbing feet 27 at the four corners of its lower surface. Each foot 27 is molded from natural rubber and has a metal insert embedded in its top. The insert has a countersunk screw hole in the center and is locked to the lower surface of the base 1 by a countersunk screw. The bottom of the foot 27 is a flat structure with anti-slip texture on the surface. The contact area is not less than 20 square centimeters, which is used to increase friction resistance and suppress displacement caused by vibration during equipment operation.

[0030] The liquid storage chamber 2 is a box-type container with an open top. Its bottom contour is completely fitted with the sunken installation area 6 of the base 1. The two are permanently fixed by a continuous circumferential welding process. The weld is located at the junction of the root of the outer wall of the liquid storage chamber 2 and the upper surface of the base 1, with a weld height of not less than five millimeters. After welding, an airtightness test shows no leakage. Near the upper edge of the side wall of the liquid storage chamber 2, there is an observation window 9. The observation window 9 is made of transparent polycarbonate sheet with a thickness of eight millimeters. The edge has an annular flange. The outer diameter of the flange is slightly larger than the inner diameter of the opening in the side wall of the chamber. During installation, it is pushed in from the inside and then tightened by an annular metal pressure ring 10 screwed into the threaded groove from the outside. The outer surface of the metal pressure ring 10 has knurled anti-slip texture for easy manual tightening. The top edge of the liquid storage chamber 2 is machined with an annular flange face 11. The flange face 11 is twenty-five millimeters wide and the surface is finely ground with a roughness Ra value of not more than 1.6 micrometers. It is used for subsequent sealing with the bottom surface of the flow channel integrated plate 4. A heat dissipation fin assembly 33 is provided on one side of the outer wall of the liquid storage cavity 2. This fin assembly 33 consists of twelve vertically arranged thin plates, each fin being two millimeters thick and having the same height as the liquid storage cavity 2. The spacing between adjacent fins is eight millimeters. The fin roots are integrally cast with the outer wall of the cavity without welding or riveting structures, ensuring a continuous heat conduction path. A liquid level sensing rod 28 is vertically fixed on the inner wall of the liquid storage cavity 2 near the front side. The sensing rod 28 is a cylindrical stainless steel rod with a diameter of six millimeters, and its outer surface is covered with a polytetrafluoroethylene insulation layer with a thickness of 0.5 millimeters. Five conductive contacts are arranged axially along the sensing rod 28. The contact material is gold-plated copper alloy. Each contact is led out through a sealed wire hole reserved in the wall of the liquid storage cavity 2 via an independent lead wire. The end of the lead wire is welded to a pin terminal for connection to an external alarm control box.

[0031] The circulation drive component 3 includes a pump housing 12, an impeller rotor 13, a drive shaft 14, and a bearing housing 15. The pump housing 12 is a cylindrical shell made of corrosion-resistant stainless steel. It has a circular inlet 16 at its bottom, with the central axis of the inlet 16 aligned with the lowest point of the bottom of the storage chamber 2, with a distance of no more than ten millimeters between them. A rectangular outlet 17 is located on the side of the pump housing 12, facing the flow channel integrated plate 4. The outlet flange face has a 15-degree angle with the horizontal plane, facilitating natural pipeline extension. A flange 18 is located at the bottom of the pump housing 12. The outer diameter of the flange 18 is larger than the diameter of the pump housing 12 itself. Its bottom surface is fixed to the outer wall of the storage chamber 2 by continuous fillet welds. The weld seam surrounds the outer edge of the flange 18 and is ground smooth after welding. The impeller rotor 13 is housed within the internal cavity of the pump housing 12. A keyway is located at the center of its hub, connecting it to one end of the drive shaft 14 via a flat key. The impeller has seven blades arranged in a swept-back configuration, with polished surfaces to reduce fluid resistance. The drive shaft 14 is a solid stainless steel shaft with a diameter of 12 mm. The portion extending beyond the rear end cover of the pump housing 12 is 50 mm long, and a coupling mounting step is machined at its end. It connects to the external motor output shaft via a flexible coupling 19. The coupling 19 employs a plum-shaped elastic structure, allowing an axial offset of no more than 0.5 mm. The bearing housing 15 is fitted onto the external section of the drive shaft 14 within the pump housing 12. Its inner bore is clearance-fitted with the drive shaft 14, with the clearance controlled within 0.02 mm. The outer ring of the bearing housing 15 is interference-fitted with the inner bore of the rear end cover of the pump housing 12, with an interference of 0.03 mm, ensuring no axial movement after press-fitting. A mechanical seal 30 is provided between the drive shaft 14 and the rear end cover of the pump housing 12. The seal 30 includes a stationary ring, a rotating ring, and a spring. The outer ring of the stationary ring is interference-fitted with the inner hole of the rear end cover, and the inner ring of the rotating ring is clearance-fitted with the drive shaft 14. The two ends of the spring abut against the back of the rotating ring and the inner boss of the rear end cover, respectively. The free height of the spring is 25 mm, and the working height after compression is 18 mm, providing continuous axial clamping force. A filter screen 29 is provided inside the liquid inlet 16 of the pump housing 12. The filter screen 29 has a hemispherical structure and is woven from stainless steel wire with a diameter of 0.3 mm and a mesh size of 100 meshes. The opening edge of the filter screen 29 has three evenly distributed annular buckles, which are fitted and fixed with annular grooves on the inner wall of the liquid inlet 16. When disassembling, a special tool is needed to pry the buckles from the outside to release them.

[0032] The flow channel integrated plate 4 is a rectangular metal block made of brass or aluminum alloy. Its bottom surface is completely fitted with the annular flange 11 at the top of the liquid storage chamber 2. An elastic sealing gasket 23 is sandwiched between the two. This gasket 23 is made of nitrile rubber, three millimeters thick, and its surface is coated with grease to reduce installation friction. The flow channel integrated plate 4 is locked to the flange 11 of the liquid storage chamber 2 by six evenly distributed hexagonal bolts. The bolt specification is M8×30, and the tightening torque is 20 Nm. The flow channel integrated plate 4 has three isolated liquid channels inside: a return channel 20, a replenishment channel 21, and a bypass channel 22. One end of the reflux channel 20 opens into the central area of ​​the bottom surface of the flow channel integrated plate 4, directly opposite the internal space of the liquid storage cavity 2, and the other end opens into the left side of the top surface of the flow channel integrated plate 4. One end of the replenishment channel 21 opens into the bottom surface of the flow channel integrated plate 4 near the right edge, connecting to the upper liquid surface area of ​​the liquid storage cavity 2, and the other end opens into the right side of the top surface of the flow channel integrated plate 4. Both ends of the bypass channel 22 open into the top surface of the flow channel integrated plate 4, with the left end opening next to the outlet of the reflux channel 20 and the right end opening next to the outlet of the replenishment channel 21, forming a short-circuit circulation path. Each channel opening is provided with an annular groove, with a depth of two millimeters and a width of five millimeters, for embedding an O-ring 24. The O-ring 24 is made of fluororubber and has a cross-sectional diameter of four millimeters. The top surface of the flow channel integrated plate 4 is provided with a guide boss 31. This boss 31 is a rectangular frame structure arranged around the three channel openings. The distance between the inner wall of the boss 31 and the edge of each channel opening is three millimeters. The height of the boss 31 is eight millimeters, which is two millimeters higher than the thickness of the large diameter section of the quick-connect coupling body 25, ensuring vertical alignment during the insertion of the coupling. The side of the flow channel integrated plate 4 is provided with a pressure detection interface 35. This interface 35 is an M12×1.5 internal thread blind hole with a depth of twenty millimeters, used for temporarily screwing in a pressure sensor or mechanical pressure gauge. The interface 35 is normally closed by a sealing plug with a hexagonal head at the outer end for easy wrench installation and removal.

[0033] The quick-connect coupling assembly 5 includes three independent coupling bodies 25, which are respectively inserted into the openings of the return channel 20, the replenishment channel 21, and the bypass channel 22 on the top surface of the flow channel integration plate 4. Each coupling body 25 has a stepped cylindrical structure. The outer diameter of the smaller diameter section is clearance-fitted with the inner diameter of the corresponding channel opening, with a clearance of 0.1 mm. The outer diameter of the larger diameter section is 10 mm larger than that of the smaller diameter section, and its end face abuts against the top surface of the flow channel integration plate 4, forming an axial limit. The outer wall of the coupling body 25 is provided with external threads, the thread specification of which matches the internal thread hole provided at the corresponding position on the top surface of the flow channel integration plate 4, and the engagement length is not less than 15 mm. The inner hole of the coupling body 25 is in communication with the corresponding channel, and its top end is provided with a standard quick-connect interface 26. This interface 26 conforms to the ISO 16028 standard, and the inner diameter of the interface is selected according to the coolant flow requirements, with two specifications: eight mm or twelve mm. A red anti-loosening marking line 32 is etched axially on the outer wall of the connector body 25. This marking line 32 is 0.5 mm wide. When the connector body 25 is tightened to the correct position, the anti-loosening marking line 32 completely coincides with the reference line etched on the top surface of the flow channel integrated plate 4. The operator can visually determine whether the specified torque has been achieved. An annular groove is provided at the root of the small-diameter section of the connector body 25. A second O-ring is embedded in the groove, forming a double-sealing structure with the inner wall of the flow channel integrated plate 4 to prevent coolant leakage along the threaded gaps.

[0034] A cable fixing clip 34 is provided on the middle of the right side of the base 1. The fixing clip 34 is a U-shaped stainless steel stamping part with an opening width of 25 mm and a through hole at each end. It is fixed to the side wall of the base 1 by M6 screws. A rubber pad with a thickness of 3 mm and a Shore hardness of 70 is pasted on the inside of the fixing clip 34. It is used to hold the power line and the signal line of the liquid level sensing rod 28 led out from the circulation drive component 3, so as to prevent the cable from loosening or the insulation layer from being worn due to shaking during the operation of the equipment.

[0035] The assembly process is as follows: First, place the liquid storage chamber 2 in the sunken installation area 6 of the base 1, adjust the position so that the outlines of the two are completely matched, and then perform continuous welding along the outer edge. After welding, perform pressure testing and leak detection. Then, weld the pump body shell 12 of the circulation drive component 3 to the outer wall of the liquid storage chamber 2 through the bottom flange 18. Before welding, the filter screen 29 and mechanical seal 30 need to be installed in advance. Next, lay the elastic sealing gasket 23 on the top flange face 11 of the liquid storage chamber 2, and then align the flow channel integrated plate 4 and tighten it with bolts. Then, screw the three quick-connect coupling bodies 25 into the corresponding internal thread holes of the flow channel integrated plate 4 in sequence. During the screwing process, observe the alignment of the anti-loosening mark line 32 with the reference mark line to confirm that it is tightened in place. Finally, install the shock-absorbing support 27, the cable fixing clip 34 and the sealing plug of the pressure detection interface 35 to complete the assembly of the whole machine.

[0036] Before the equipment is put into use, the specified type of coolant must be injected into the storage chamber 2. The liquid level should be between the lowest and highest contacts of the liquid level sensor 28. The external cooling pipes are quickly connected to the quick-connect fitting body 25 via the standard quick-connect interface 26. A "click" sound should be heard during connection to confirm that the locking mechanism is engaged. After starting the external motor, the drive shaft 14 drives the impeller rotor 13 to rotate. The coolant enters the pump housing 12 from the storage chamber 2 through the inlet 16, is pressurized, and is discharged from the outlet 17. It then enters the return channel 20 or bypass channel 22 of the flow channel integrated plate 4, and returns to the equipment cooling part through the external pipes. Finally, it flows back to the storage chamber 2 through the replenishment channel 21, forming a closed loop. During operation, the liquid level can be monitored through the observation window 9. When the liquid level is lower than the set contact point, the liquid level sensor 28 triggers an alarm signal. If it is necessary to detect the system pressure, the sealing plug of the pressure detection interface 35 can be temporarily removed, and a pressure gauge can be screwed in to read the value.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coolant storage and circulation device, characterized in that, It includes a base (1), a liquid storage chamber (2), a circulation drive component (3), a flow channel integrated plate (4), and a quick-connect coupling assembly (5), wherein: The base (1) has a rectangular plate structure, with a sunken installation area (6) on the upper surface, a reinforcing rib network (7) embedded inside, and positioning through holes (8) at the four corners; The liquid storage cavity (2) is a box-type container with an open top. The bottom fits into the sunken installation area (6) and is fixedly connected to the base (1) by welding. The side wall is provided with an observation window (9) and the top edge is provided with an annular flange surface (11). The circulating drive component (3) includes a pump body shell (12), an impeller rotor (13), a drive shaft (14), and a bearing seat (15). The bottom of the pump body shell (12) is provided with an inlet (16) and welded to the side wall of the liquid storage chamber (2). The side is provided with an outlet (17). The impeller rotor (13) is placed inside the pump body shell (12) and keyed to the drive shaft (14). The drive shaft (14) passes through the rear end cover of the pump body shell (12) and is connected to an external motor. The bearing seat (15) is sleeved on the drive shaft (14) and fixed in the inner hole of the rear end cover. The flow channel integrated plate (4) is attached to the annular flange surface (11) and locked with bolts. An elastic sealing gasket (23) is sandwiched between the two. The flow channel integrated plate (4) is provided with a return channel (20), a liquid replenishment channel (21) and a bypass channel (22). The quick-connector assembly (5) includes three connector bodies (25), which are screwed into the corresponding channel openings on the top surface of the flow channel integrated plate (4). The top of the connector body (25) is provided with a standard quick-connect interface (26).

2. The coolant storage and circulation device according to claim 1, characterized in that: The base (1) has shock-absorbing feet (27) on its lower surface. The shock-absorbing feet (27) are made of rubber and have metal inserts on the top, which are fixed to the base (1) by countersunk screws.

3. The coolant storage and circulation device according to claim 1, characterized in that: The liquid storage cavity (2) is equipped with a liquid level sensing rod (28). The liquid level sensing rod (28) is fixed to the inner surface of the side wall of the cavity in the vertical direction. The outer surface is covered with an insulating layer and multiple conductive contacts are arranged at intervals. Each contact is connected to the external circuit through a lead wire passing through the cavity wall.

4. The coolant storage and circulation device according to claim 1, characterized in that: The pump body housing (12) has a filter screen (29) at the liquid inlet (16). The filter screen (29) is a hemispherical metal wire braided structure, and its edge buckles are fitted and fixed to the annular groove on the inner wall of the liquid inlet (16).

5. The coolant storage and circulation device according to claim 1, characterized in that: A mechanical seal (30) is provided between the drive shaft (14) and the rear end cover of the pump housing (12). The mechanical seal (30) includes a stationary ring, a rotating ring and a spring. The stationary ring is interference-fitted with the inner hole of the rear end cover, and the rotating ring is clearance-fitted with the drive shaft (14). The two ends of the spring abut against the back of the rotating ring and the inner boss of the rear end cover, respectively.

6. The coolant storage and circulation device according to claim 1, characterized in that: The top surface of the flow channel integrated plate (4) is provided with a guide boss (31). The guide boss (31) is arranged around the opening of the return channel (20), the liquid replenishment channel (21) and the bypass channel (22), and its height is higher than the thickness of the large diameter section of the connector body (25).

7. The coolant storage and circulation device according to claim 1, characterized in that: The outer wall of the connector body (25) is provided with an anti-loosening marking line (32). When the connector body (25) is tightened in place, the anti-loosening marking line (32) is aligned with the corresponding engraving line on the top surface of the flow channel integrated plate (4).

8. The coolant storage and circulation device according to claim 1, characterized in that: The outer wall of the liquid storage cavity (2) is provided with a heat dissipation fin assembly (33), which is composed of multiple parallel thin plates. Each thin plate extends in the vertical direction and its root is integrally cast with the outer wall of the cavity.

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