A vertical high-efficiency circulating pump

Abstract

This invention relates to the field of water pump technology, specifically a vertical high-efficiency circulating pump, comprising a pump body with a double volute structure and a motor mounted on its top. An impeller, coaxially connected to the motor, is disposed within the central cylinder of the pump body, located between the inlet and outlet ends of the pump body. The impeller consists of two spaced circular plates, and integrally formed hyperbolic blades are provided within the impeller. The impeller, composed of two spaced circular plates, has an inlet ring with a central opening facing outwards. The impeller integrally forms hyperbolic blades, with curved ends extending into the inlet ring. The impeller is made of stainless steel or copper using a full silica sol warm-wax investment casting process, resulting in hyperbolic blades that are ultra-thin with a smooth flow channel surface, reducing water flow potential energy loss and ensuring high pump efficiency.

Description

Technical Field

[0001] This invention relates to the field of water pump technology, specifically a vertical high-efficiency circulating pump. Background Technology

[0002] The impeller is the heart of a water pump, determining its head, flow rate, and efficiency. For the design of high-efficiency, energy-saving water pumps, the focus is on minimizing hydraulic losses, maximizing efficiency, and optimizing cavitation performance. A combination of three-dimensional flow theory and CFD fluid dynamics calculations and optimization methods is used to find the optimal combination of different flow and geometric parameters, ensuring high-efficiency performance from the design stage. The three-dimensional flow design method optimizes factors such as the blade inlet / outlet angle, the number of blades, and the shape of each blade cross-section. Its structure adapts to the actual flow state of the fluid, thus preventing backflow between blades and flow separation at the working surface. This allows the water to flow more closely to the design state between the impellers, reducing flow losses and wasted energy, and improving the overall efficiency of the water pump.

[0003] When installing existing water pumps indoors, considering the different heights of the outlet pipes of the connected equipment, it is necessary to measure the installation height on-site and mark the fixing hole positions on the ground before drilling holes using an electric drill. However, when drilling holes manually, deviations are prone to occur, making it difficult to install bolts to fix the support frame, and even causing tilting, which affects the installation progress and stability of the water pump. Summary of the Invention

[0004] In order to overcome the deficiencies in the prior art, the present invention aims to provide a vertical high-efficiency circulating pump to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides a vertical high-efficiency circulating pump, comprising a pump body with a double volute structure and a motor mounted on its top. An impeller coaxially connected to the motor is disposed inside the central cylinder of the pump body. The impeller is located between the inlet and outlet ends of the pump body. The impeller is composed of two spaced circular plates, one of which has an opening in the center and an outwardly facing water inlet ring. The impeller is integrally formed with blades of a hyperbolic structure, and the inner end of the blades extending into the water inlet ring is provided with curved blades.

[0006] The pump body has a fixed box at its bottom. Inside the fixed box is a linkage rod assembly for transmitting the output torque of the motor. The fixed box includes a bottom tube and an adjusting tube that are connected in an inner and outer sleeve. The linkage rod assembly includes a rotating tube set on the central shaft of the fixed box, a linkage rod embedded in the top of the rotating tube, an output rod embedded in the bottom of the rotating tube, and a drill bit inserted into the bottom end of the output rod. A transmission rod is tightly inserted into the bottom end of the central shaft of the impeller, and the top of the linkage rod is inserted into the bottom end of the transmission rod.

[0007] As a further improvement to this technical solution, the bottom end of the transmission rod is fitted with a bearing and the bearing is embedded in the bottom of the pump body. A water baffle ring is fitted on the outside of the bearing. The linkage rod has a square rod structure and passes through the top of the regulating pipe. An regulating rod is inserted horizontally at the bottom of the linkage rod.

[0008] As a further improvement to this technical solution, the rotating tube has waist-shaped holes on both radial sides, the adjusting tube has corresponding waist-shaped holes on both sides, and the rotating tube is fitted with a bearing in the middle, with the bearing welded to the inner wall of the adjusting tube on both sides.

[0009] As a further improvement to this technical solution, the output rod is a square rod structure with a threaded hole on one side of its bottom, and is threaded with an internal hexagon bolt. The middle part of the output rod is tightly fitted with a slide rod that is slidably connected to the inner wall of the bottom tube.

[0010] As a further improvement to this technical solution, limiting rings welded to the inner wall of the adjusting tube are sleeved at both ends of the rotating tube, and a compression spring is welded between the sliding rod and the limiting ring located below.

[0011] As a further improvement to this technical solution, the top end of the regulating pipe is fixedly connected to the bottom surface of the pump body central cylinder by bolts, and several through holes are symmetrically opened on the left and right sides of the regulating pipe. The top end of the bottom pipe is inserted with pins on the left and right sides, and the pins can be inserted into the through holes.

[0012] As a further improvement to this technical solution, the bottom tube has a square tube structure and fixing holes are provided at the four corners of its base. A set of fixed holes is inserted into one of the fixing holes. Four slots are provided in a ring at equal intervals on the inner side of the fixing hole, and the orientation of the front, back, left and right slots is the same as the front, back, left and right orientation of the bottom tube.

[0013] As a further improvement to this technical solution, the fixed hole assembly includes a fixed hole pin that is inserted into a fixed hole, spring blocks embedded on both radial sides of the fixed hole pin, and a pressure post embedded on the central shaft of the fixed hole pin, wherein the spring blocks are engaged with the slot.

[0014] As a further improvement to this technical solution, each of the slots and the fixing hole has an intersecting edge with a bevel, and the bevels are distributed in a ring at equal intervals.

[0015] As a further improvement to this technical solution, a spring sheet with a rhomboid frame structure is bonded to the bottom of the pressure column, and the two corners of the spring sheet are respectively bonded to two spring blocks.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. This vertical high-efficiency circulating pump features an impeller composed of two spaced circular blades. One of the blades has an open center and an outward-facing inlet ring. The impeller is integrally formed with hyperbolic blades, and the inner ends of the blades extend into the inlet ring with curved blades. The impeller is made of stainless steel or copper using a full silica sol warm wax casting process. It features hyperbolic blades that are ultra-thin and have a smooth flow channel surface, reducing the loss of water flow potential energy and ensuring the pump's high efficiency.

[0018] 2. This vertical high-efficiency circulating pump has higher hydraulic efficiency by treating all impellers with dynamic, static and hydraulic balancing to compensate for axial thrust; all impellers adopt a double-ring balancing structure, so that the tolerance between the impeller and the pump casing can be minimized, which will significantly reduce the backflow of liquid from the high-pressure area to the low-pressure area and reduce internal losses.

[0019] 3. This vertical high-efficiency circulating pump uses a fixed box as a pump body support. The pump body installation height is determined by the segmented adjustment function of the fixed box. The rotating tube inside the fixed box automatically drills holes by connecting to the torque force of the motor on the pump body. The fixed pins of the fixed hole group are first inserted and positioned with the center hole on the ground at the bottom of the fixed box as the center. Then, the fixed box is rotated 90 degrees each time, and four holes are drilled. These four holes can be aligned with the fixed holes at the bottom of the fixed box and fixed with bolts. The operation is convenient and the hole positioning is accurate and fast. Attached Figure Description

[0020] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, guided by the teachings of this invention, can select various possible shapes and proportions to implement the invention according to specific circumstances.

[0021] Figure 1 This is a schematic diagram of the overall assembly structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the fixed box assembly structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the impeller top structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the impeller bottom structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the linkage assembly and bottom tube assembly structure of the present invention;

[0026] Figure 6This is a schematic diagram of the linkage assembly structure of the present invention;

[0027] Figure 7 This is a front view of the linkage assembly and impeller assembly of the present invention;

[0028] Figure 8 This is a schematic diagram of the rotating tube assembly structure of the present invention;

[0029] Figure 9 This is a schematic diagram of the output rod assembly structure of the present invention;

[0030] Figure 10 This is a schematic diagram of a partial structure of the bottom tube of the present invention;

[0031] Figure 11 This is a schematic diagram of the fixed hole assembly structure of the present invention;

[0032] Figure 12 This is a schematic diagram of the connection structure between the pressure column and the pin of the present invention.

[0033] The meanings of the labels in the diagram are as follows:

[0034] 100. Pump body; 110. Impeller; 111. Inlet ring; 120. Blade; 121. Curved blade; 130. Drive rod;

[0035] 200. Fixing box; 210. Bottom tube; 211. Fixing hole; 212. Slot; 213. Bevel; 220. Adjusting tube;

[0036] 300. Linkage rod assembly; 310. Rotating tube; 311. Limiting ring; 320. Linkage rod; 321. Adjusting rod; 330. Output rod; 331. Slide rod; 340. Drill bit; 350. Compression spring;

[0037] 400, fixed hole assembly; 410, fixed hole pin; 420, spring block; 430, pressure column; 440, spring piece. Detailed Implementation

[0038] The details of the present invention can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of the present invention described herein are for illustrative purposes only and should not be construed as limiting the invention in any way. Under the teachings of this invention, those skilled in the art can conceive of any possible modifications based on the invention, and these should all be considered to fall within the scope of the invention. The terms "installation" and "connection" should be interpreted broadly, referring to direct connection or indirect connection through an intermediate medium.

[0039] The terms "central axis," "vertical," "horizontal," "front," "rear," "upper," "lower," "left," "right," "top," "bottom," "inner," and "outer" used herein to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of the invention, "a number" means two or more, unless otherwise explicitly specified.

[0040] Please see Figures 1-12 As shown, this invention provides a vertical high-efficiency circulating pump, including a pump body 100 with a double volute structure and a motor mounted on its top. The double volute structure effectively balances radial forces, ensuring smooth pump operation. A central cylinder is located at the center of the double volutes. The inlet end of the pump body 100 is connected to the bottom right side of the central cylinder, and the outlet end of the pump body 100 is connected to the top left side of the central cylinder. An impeller 110, coaxially connected to the motor, is installed inside the central cylinder of the pump body 100. The diameter of the impeller 110 is matched to that of the central cylinder. The impeller 110 is located between the inlet and outlet ends of the pump body 100 and is used to draw liquid from the inlet end and pump it out from the outlet end.

[0041] This product is limited to use in industrial circulating water systems for chilled, cooling, and heating applications of central air conditioning chillers. When supplying cooling water, the static pressure at the pump inlet must not be less than 0.04 MPa. When the heating water temperature is within the range of 60℃-90℃, the static pressure at the pump inlet must not be less than 0.06 MPa.

[0042] Install this product at the outlet of the evaporator and condenser using a suction-type installation, which is especially important for cooling water circulation systems using fanless jet cooling towers.

[0043] Furthermore, the impeller 110 is composed of two spaced circular blades, one of which has an open center and an outward-facing inlet ring 111. The impeller 110 has a hyperbolic blade 120 integrally formed inside, and the inner end of the blade 120 extends into the inlet ring 111 with a curved blade 121. The impeller 110 is made of stainless steel or copper using a full silica sol warm wax investment casting process. It has hyperbolic blades 120 that are ultra-thin and have a smooth flow channel surface, which reduces the loss of water flow potential energy and ensures the high efficiency of the pump.

[0044] All impellers 110 have undergone dynamic, static, and hydraulic balancing treatments to compensate for axial thrust and achieve higher hydraulic efficiency. All impellers 110 adopt a double-ring balancing structure, which minimizes the tolerance between the impeller 110 and the volute of the pump body 100. This significantly reduces the backflow of liquid from the high-pressure area to the low-pressure area and results in less internal loss.

[0045] Specifically, a fixed box 200 is provided at the bottom of the pump body 100 for supporting and adjusting the installation position of the pump body 100; the fixed box 200 is provided with a linkage rod group 300 for transmitting the output torque of the motor. The linkage rod group 300 is used to transmit the torque of the motor and work with the drill bit to drill a hole in the ground so that the fixed box 200 can be fixedly connected to the ground with bolts.

[0046] The fixed box 200 includes a bottom tube 210 and an adjusting tube 220 that are connected in an inner and outer manner. The linkage group 300 includes a rotating tube 310 set on the central shaft of the fixed box 200, a linkage rod 320 embedded in the top of the rotating tube 310, an output rod 330 embedded in the bottom of the rotating tube 310, and a drill bit 340 inserted into the bottom end of the output rod 330. The bottom end of the central shaft of the impeller 110 is tightly inserted with a transmission rod 130, and the top of the linkage rod 320 is inserted into the bottom end of the transmission rod 130.

[0047] Furthermore, a bearing is fitted at the bottom of the transmission rod 130 and embedded in the bottom of the pump body 100. A water-retaining ring is fitted on the outside of the bearing, so that the transmission rod 130 rotates stably and synchronously with the impeller 110 and maintains the seal of the pump body 100. The linkage rod 320 has a square rod structure and passes through the top of the regulating pipe 220. The bottom of the linkage rod 320 is horizontally inserted with an adjusting rod 321, thereby obtaining torque to drive the rotating pipe 310 to rotate. By inserting the adjusting rod 321 into the through hole at the bottom of the linkage rod 320, the linkage rod 320 is pulled down and disengaged from the transmission rod 130, thus stopping the operation of the rotating pipe 310. After the linkage rod 320 is moved up and inserted into the transmission rod 130, the adjusting rod 321 must be pulled out to avoid affecting the normal rotation of the rotating pipe 310.

[0048] Furthermore, the rotating tube 310 has waist-shaped holes on both radial sides, and the adjusting tube 220 has corresponding waist-shaped holes on both sides, so that the adjusting rod 321 can move up and down, thereby driving the linkage rod 320 to rise and fall; the rotating tube 310 is fitted with a bearing in the middle and the bearing is welded to the inner wall of the adjusting tube 220 on both sides, so that the rotating tube 310 rises and falls with the adjusting tube 220 and can be stably suspended and rotated inside the adjusting tube 220.

[0049] The output rod 330 has a square rod structure and a threaded hole on one side of its bottom, and is threaded with an internal hex bolt for locking the drill bit 340; the middle part of the output rod 330 is tightly fitted with a slide rod 331 that is slidably connected to the inner wall of the bottom tube 210, so as to ensure that the central axis of the output rod 330 is coaxial with the rotating tube 310, thereby obtaining torque force to drive the drill bit 340 to rotate and drill.

[0050] Limiting rings 311, which are welded to the inner wall of the adjusting tube 220, are fitted at both ends of the rotating tube 310 to ensure that the rotating tube 310 and the transmission rod 130 are coaxially arranged and that the rotating tube 310 and the limiting rings 311 can rotate. A compression spring 350 is welded between the slide rod 331 and the limiting ring 311 located below. The compression spring 350 is used to press the output rod 330 down, so that the drill bit 340 automatically drills downward.

[0051] Furthermore, the top end of the regulating pipe 220 is fixedly connected to the bottom surface of the central cylinder of the pump body 100 by bolts. Several through holes are symmetrically opened on the left and right sides of the regulating pipe 220. Pins are inserted into the top end of the bottom pipe 210 on the left and right sides and the pins can be inserted into the through holes, so that the regulating pipe 220 can stably support the pump body 100 after adjusting the height.

[0052] In addition, the bottom tube 210 has a square tube structure and fixing holes 211 are provided at the four corners of its base. That is, the four fixing holes 211 are equally spaced from the center of the bottom of the bottom tube 210. A fixing hole group 400 is inserted into one of the fixing holes 211 to position the bottom tube 210. The position of the bolt fixing can be determined by rotating the bottom tube 210 by 90 degrees and drilling a hole.

[0053] The inner side of the fixing hole 211 is provided with four slots 212 in an annular shape at equal intervals. The front, back, left and right slots 212 are oriented in the same direction as the front, back, left and right directions of the bottom tube 210, and are used as coordinates for rotating the bottom tube 210 by 90 degrees.

[0054] Specifically, the fixed hole assembly 400 includes a fixed hole pin 410 that is inserted into the fixed hole 211, spring blocks 420 embedded on both radial sides of the fixed hole pin 410, and a pressure post 430 embedded on the central axis of the fixed hole pin 410. The spring blocks 420 are engaged with the slot 212 and are used to temporarily stabilize the bottom tube 210 after it is rotated 90 degrees, so as to position the drill hole.

[0055] Each slot 212 and the fixed hole 211 have an intersecting edge with a bevel 213, and the bevels 213 are distributed in a ring at equal intervals. This allows the spring block 420 to slide back into the fixed hole pin 410 along the bevel 213 after the bottom tube 210 is rotated. After the fixed hole pin 410 is rotated 90 degrees, the spring block 420 automatically pops out and engages with a pair of slots 212 for positioning, so as to drill holes.

[0056] Furthermore, a spring sheet 440 with a diamond-shaped frame structure is bonded to the bottom of the pressure column 430, and two spring blocks 420 are bonded to the two corners of the spring sheet 440 respectively. The spring sheet 440 is made of folded stainless steel sheet, and its deformation ability is used to obtain elasticity, so that the spring block 420 automatically pops out into the fixed hole pin 410 and engages with the slot 212 for positioning.

[0057] During installation, the vertical high-efficiency circulating pump of the present invention is installed by raising the adjusting pipe 220 and fixing it to the bottom pipe 210 with a pin according to the height position of the external water pipe required by the pump body 100; then the linkage rod 320 is moved up and connected to the transmission rod 130, and the adjusting rod 321 is pulled out. Then the motor is started to drive the impeller 110 to rotate, which drives the rotating pipe 310 to rotate through the transmission rod 130 and the linkage rod 320. The rotating pipe 310 drives the output rod 330 to rotate, so that the drill bit 340 installed at its bottom drills the ground and automatically drills the center hole of the fixed box 200 on the ground under the action of the compression spring 350.

[0058] After drilling the center hole, the moving fixed box 200 inserts the fixing pin 410, which is inserted into the fixing hole 211, into the drilled hole on the ground. Then, the motor is started again to drive the drill bit 340 to drill through the above transmission. This hole is the first bolt fixing hole. Then, the fixed box 200 is rotated counterclockwise until the spring block 420 engages with the next adjacent slot 212. The second bolt fixing hole is then determined. The motor is started again to drive the drill bit 340 to drill through the above transmission. Then, the fixed box 200 is rotated counterclockwise twice to determine the third and fourth bolt fixing holes. Finally, the fixed box 200 is moved so that its fixing hole 211 is aligned with the four bolt fixing holes, and chemical bolts or expansion bolts are screwed in to fix the fixed box 200 and the pump body 100 on the ground. The operation is convenient and the hole fixing is accurate and fast.

[0059] It should be noted that the above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A vertical high-efficiency circulating pump, comprising a pump body (100) with a double volute structure and a motor mounted on its top, characterized in that: The pump body (100) has an impeller (110) coaxially connected to the motor inside the central cylinder. The impeller (110) is composed of two circular plates spaced apart. One of the circular plates has an opening in the center and an inlet ring (111) facing outward. The impeller (110) has blades (120) integrally formed with a hyperbolic structure. The inner end of the blades (120) and extending into the inlet ring (111) has curved blades (121). The bottom of the pump body (100) is provided with a fixed box (200), and the fixed box (200) is provided with a linkage rod assembly (300) for transmitting the output torque of the motor. The fixed box (200) includes a bottom tube (210) and an adjusting tube (220) that are connected in an inner and outer manner. The linkage assembly (300) includes a rotating tube (310) mounted on the central shaft of the fixed box (200), a linkage rod (320) embedded in the top of the rotating tube (310), an output rod (330) embedded in the bottom of the rotating tube (310), and a drill bit (340) inserted into the bottom end of the output rod (330). The bottom end of the central shaft of the impeller (110) is tightly connected to a transmission rod (130), and the top of the linkage rod (320) is inserted into the bottom end of the transmission rod (130). The bottom tube (210) has a square tube structure and a fixing hole (211) is provided at the four corners of its base. A fixing hole group (400) is inserted into one of the fixing holes (211). Four slots (212) are provided in a ring at equal intervals on the inner side of the fixing hole (211), and the orientation of the slots (212) is the same as the front, back, left and right orientation of the bottom tube (210). The fixed hole assembly (400) includes a fixed hole pin (410) that is inserted into a fixed hole (211), a spring block (420) embedded on both radial sides of the fixed hole pin (410), and a pressure post (430) embedded on the central axis of the fixed hole pin (410). The spring block (420) is engaged with a slot (212). Each slot (212) has a bevel (213) on one of its intersecting sides with the fixed hole (211). The bottom of the pressure post (430) is bonded with a spring piece (440) in the form of a rhomboid frame structure, and the two corners of the spring piece (440) are bonded to two spring blocks (420) respectively.

2. The vertical high-efficiency circulating pump according to claim 1, characterized in that: The bottom end of the transmission rod (130) is fitted with a bearing and the bearing is embedded in the bottom of the pump body (100). A water baffle ring is fitted on the outside of the bearing. The linkage rod (320) has a square rod structure and passes through the top of the regulating pipe (220). The bottom of the linkage rod (320) is horizontally inserted with an regulating rod (321).

3. The vertical high-efficiency circulating pump according to claim 2, characterized in that: The rotating tube (310) has waist-shaped holes on both radial sides, and the adjusting tube (220) has waist-shaped holes on both sides. The rotating tube (310) is fitted with a bearing in the middle, and the bearing is welded to the inner wall of the adjusting tube (220) on both sides.

4. The vertical high-efficiency circulating pump according to claim 3, characterized in that: The output rod (330) has a square rod structure and a threaded hole on one side of its bottom, and is threaded with an internal hex bolt. The middle part of the output rod (330) is tightly fitted with a slide rod (331) that is slidably connected to the inner wall of the bottom tube (210).

5. The vertical high-efficiency circulating pump according to claim 4, characterized in that: The upper and lower ends of the rotating tube (310) are fitted with limiting rings (311) welded to the inner wall of the adjusting tube (220), and a compression spring (350) is welded between the slide rod (331) and the limiting ring (311) located below.

6. The vertical high-efficiency circulating pump according to claim 5, characterized in that: The top end of the regulating pipe (220) is fixedly connected to the bottom surface of the central cylinder of the pump body (100) by bolts. Several through holes are symmetrically opened on the left and right sides of the regulating pipe (220). The top end of the bottom pipe (210) is inserted with pins on the left and right sides, and the pins can be inserted into the through holes.

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