Centrifugal pump with heating function

Abstract

The utility model relates to the technical field of centrifugal pumps, and provides a centrifugal pump with a heating function, which comprises a base, a driving motor is fixedly connected to the top of the base, a bearing fixedly connected with the base is arranged on one side of the driving motor, and a transmission shaft fixedly connected with the output end of the driving motor is rotatably connected to the inside of the bearing. The tail portion of the transmission shaft is fixedly connected with an impeller, a clamping groove is formed in the surface of the transmission shaft, a pump shell is embedded in the clamping groove, one side of the pump shell is fixedly connected with a connecting plate, and the bottom of the connecting plate is fixedly connected with a base plate fixedly connected with the base through bolts. When the centrifugal pump works, the two transmission rods can be controlled to get close to each other by screwing the threaded rod, so that the two heating plates are driven to make contact with the transmission shaft, ice at the joint of the transmission shaft and the pump shell is melted through heat transmitted by heating wires in the heating plates, and the centrifugal pump recovers to the normal working state.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pumps, in particular to a centrifugal pump with a heating function. Background Art

[0002] Centrifugal pumps are used to move fluids by converting rotational kinetic energy, usually from an engine or electric motor, into fluid kinetic energy of fluid flow. They are a subclass of dynamic axisymmetric work-absorbing turbines. Fluid enters the pump impeller along or near the axis of rotation and is accelerated by the impeller, flowing radially outward into a diffuser or volute chamber (casing), from which it then flows out.

[0003] After searching, the existing patent (Announcement No.: 201711012738.X) discloses a centrifugal pump, including a pump casing and an impeller installed in the pump casing, the impeller includes a plurality of blades, and an impeller flow channel is formed between adjacent blades, an annular flow channel is formed around the pump casing, and a circle of annular guide belt is arranged near the water inlet in the annular flow channel. The present invention has the advantages of simple and compact structure, can greatly reduce the vortex formed in the flow channel of the pump, thereby improving the overall efficiency of the pump, etc.

[0004] However, in the above scheme, when the centrifugal pump is in use, if it encounters cold weather, the contact part between the impeller and the pump casing may freeze due to the low temperature, which may cause the drive shaft to be unable to drive the impeller to rotate normally, affecting the normal use of the centrifugal pump.

[0005] In view of this, the utility model proposes a centrifugal pump with a heating function. Utility Model Content

[0006] The utility model provides a centrifugal pump with a heating function, which solves the problem in the related art that if encountering cold weather, the contact part between the impeller and the pump casing may cause ice to form due to the low temperature, thereby causing the transmission shaft to be unable to drive the impeller to rotate normally, affecting the normal use of the centrifugal pump.

[0007] The technical solution of the utility model is as follows: a centrifugal pump with a heating function, comprising a base, a driving motor is fixedly connected to the top of the base, a bearing fixedly connected to the base is arranged on one side of the driving motor, a transmission shaft fixedly connected to the output end of the driving motor is rotatably connected inside the bearing, an impeller is fixedly connected to the tail of the transmission shaft, a slot is arranged on the surface of the transmission shaft, a pump casing is embedded inside the slot, a connecting plate is fixedly connected to one side of the pump casing, a pad fixedly connected to the base is fixedly connected to the bottom of the connecting plate by bolts, a water outlet is fixedly connected to the back side of the pump casing, a sealing plate is attached to the left side of the pump casing, a first screw embedded in the pump casing is threadedly connected to the internal thread of the sealing plate, a threaded rod rotatably connected to the base is arranged on one side of the driving motor, two groups of transmission rods slidably connected to the base are threadedly connected to the surface of the threaded rod, and the tails of the two groups of transmission rods are fixedly connected to the heating plate.

[0008] Preferably, a water inlet is fixedly connected to one side of the sealing plate, a filter tube is fitted inside the water inlet, a connecting ring is threadedly connected to the inner part of the filter tube, a connecting ring is fixedly connected to the tail of the connecting ring, through holes are provided on the sides of the connecting ring and the filter tube, limit stop rings are fixedly connected to the inner walls of the two groups of through holes, an oil filling hole is provided on the top of the bearing, a sealing plug is inserted into the oil filling hole, and the inner thread of the water inlet is threadedly connected to a second screw embedded in the filter tube.

[0009] Preferably, the surface of the threaded rod is provided with positive and negative threads, and the two groups of transmission rods form a reverse sliding structure through the threaded rod.

[0010] Preferably, the centers of the two groups of heating plates and the transmission shaft are located at the same point, and the transmission shaft is located on the movement trajectories of the two groups of heating plates.

[0011] Preferably, the first screws are arranged equidistantly in a ring shape about the center of the sealing plate, and the sealing plate forms a detachable structure through the first screws.

[0012] Preferably, the filter tube is hollow in design, and the length of the filter tube matches that of the water inlet.

[0013] Preferably, three groups of the limit stop rings are symmetrically arranged about the center of the through hole, and the three groups of the limit stop rings are all designed to be inclined toward the inside of the filter tube.

[0014] Preferably, threaded holes matching the size of the second screw are provided on both sides of the filter tube, and the filter tube is fixed inside the water inlet through the second screw.

[0015] Preferably, the inner wall of the oil filling hole fits tightly with the outer wall of the sealing plug, and the sealing plug is a rubber rod.

[0016] Preferably, the oil filling hole is designed to be vertically straight, and the tail of the oil filling hole passes through the bearing and fits with the transmission shaft.

[0017] The working principle and beneficial effects of the utility model are:

[0018] 1. In the utility model, by arranging a heating plate, the two groups of transmission rods can be controlled to approach each other by twisting the threaded rod, thereby driving the two groups of heating plates to contact the transmission shaft. The heat transmitted by the heating wire inside the heating plate melts the ice at the connection between the transmission shaft and the pump casing, so that the centrifugal pump can be restored to a normal working state.

[0019] 2. The filter tube provided in the utility model can preliminarily filter impurities in the water when water passes through the water inlet, and the limit ring can effectively prevent the impurities in the filter tube from flowing out. After use, the second screw can be unscrewed and the filter tube can be removed from the inside of the water inlet for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 This is a three-dimensional structural schematic diagram of another viewing angle of the utility model;

[0023] Figure 3 This is a schematic diagram of the card slot structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the impeller structure of the utility model;

[0025] Figure 5 This is a schematic diagram of the connecting ring structure of the utility model;

[0026] Figure 6 This is a schematic diagram of the limit retaining ring structure of the utility model;

[0027] Figure 7 It is a schematic diagram of the oil filling hole structure of the utility model.

[0028] In the figure: 1. base; 2. drive motor; 3. bearing; 4. transmission shaft; 5. impeller; 6. slot; 7. pump casing; 8. connecting plate; 9. pad; 10. water outlet; 11. sealing plate; 12. first screw; 13. threaded rod; 14. transmission rod; 15. heating plate; 16. water inlet; 17. filter tube; 18. connecting ring; 19. connecting ring; 20. through hole; 21. limit stop ring; 22. oil filling hole; 23. sealing plug; 24. second screw. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example 1

[0031] A preferred embodiment of a centrifugal pump with heating function provided by the utility model is as follows: Figures 1 to 7 As shown: a centrifugal pump with heating function, comprising a base 1, a driving motor 2 is fixedly connected to the top of the base 1, a bearing 3 fixedly connected to the base 1 is arranged on one side of the driving motor 2, a transmission shaft 4 fixedly connected to the output end of the driving motor 2 is rotatably connected inside the bearing 3, an impeller 5 is fixedly connected to the tail of the transmission shaft 4, a slot 6 is arranged on the surface of the transmission shaft 4, a pump casing 7 is embedded in the slot 6, a connecting plate 8 is fixedly connected to one side of the pump casing 7, a pad 9 fixedly connected to the base 1 is fixedly connected to the bottom of the connecting plate 8 by bolts, a water outlet 10 is fixedly connected to the back of the pump casing 7, a sealing plate 11 is attached to the left side of the pump casing 7, a first screw 12 embedded in the pump casing 7 is threadedly connected to the inner part of the sealing plate 11, a threaded rod 13 rotatably connected to the base 1 is arranged on one side of the driving motor 2, two groups of transmission rods 14 slidably connected to the base 1 are threadedly connected to the surface of the threaded rod 13, and a heating plate 15 is fixedly connected to the tail of the two groups of transmission rods 14.

[0032] In this embodiment, the surface of the threaded rod 13 is provided with positive and negative threads, and the two groups of transmission rods 14 form a reverse sliding structure through the threaded rod 13. By twisting the threaded rod 13, the threaded rod 13 rotates to drive the two groups of transmission rods 14 to approach each other along the base 1, and drive the two groups of heating plates 15 to approach each other.

[0033] In this embodiment, the centers of the two groups of heating plates 15 and the drive shaft 4 are located at the same point, and the drive shaft 4 is located on the movement trajectory of the two groups of heating plates 15. When the two groups of heating plates 15 move, they will gradually contact the drive shaft 4. At this time, the heating wire inside the heating plate 15 will transfer the emitted heat to the drive shaft 4 and the pump housing 7, so that the ice cubes melt.

[0034] In this embodiment, the first screws 12 are arranged equidistantly in a ring shape about the center of the sealing plate 11. The sealing plate 11 is formed into a detachable structure by the first screws 12. When the impeller 5 needs to be inspected, it is only necessary to unscrew the first screws 12 to disassemble the sealing plate 11, thereby facilitating maintenance of the internal components of the pump casing 7.

[0035] Example 2

[0036] Based on Example 1, a preferred embodiment of a centrifugal pump with heating function provided by the utility model is as follows: Figures 1 to 7 As shown: a water inlet 16 is fixedly connected to one side of the sealing plate 11, a filter tube 17 is fitted inside the water inlet 16, a connecting ring 18 is connected to the inner thread of the filter tube 17, a connecting ring 19 is fixedly connected to the tail of the connecting ring 18, through holes 20 are provided on the sides of the connecting ring 19 and the filter tube 17, the inner walls of the two groups of through holes 20 are fixedly connected to limit retaining rings 21, an oil filling hole 22 is opened on the top of the bearing 3, a sealing plug 23 is inserted into the oil filling hole 22, and a second screw 24 embedded in the filter tube 17 is connected to the inner thread of the water inlet 16.

[0037] In this embodiment, the filter tube 17 is hollow in design, and the length of the filter tube 17 matches that of the water inlet 16 . The hollow portion inside the filter tube 17 can collect impurities in a centralized manner.

[0038] In this embodiment, three groups of limit stop rings 21 are symmetrically arranged about the center of the through hole 20. The three groups of limit stop rings 21 are all designed to be inclined toward the inside of the filter tube 17. By setting the limit stop rings 21, when impurities enter, the limit stop rings 21 will be pushed open, and when the impurities want to flow out of the filter tube 17 under the action of water flow, the limit stop rings 21 will be pushed, so that the limit stop rings 21 open and the through hole 20 is blocked to prevent impurities from flowing out.

[0039] In this embodiment, threaded holes matching the size of the second screw 24 are provided on both sides of the filter tube 17. The filter tube 17 is fixed inside the water inlet 16 by the second screw 24. By unscrewing the second screw 24, the filter tube 17 can be taken out from the water inlet 16 for cleaning.

[0040] In this embodiment, the inner wall of the oil filling hole 22 is tightly fitted with the outer wall of the sealing plug 23. The sealing plug 23 is a rubber rod. The sealing plug 23 can effectively seal the oil filling hole 22 to prevent the lubricating oil from flowing out.

[0041] In this embodiment, the oil filling hole 22 is designed to be a vertical straight line, and the tail of the oil filling hole 22 passes through the bearing 3 and fits the transmission shaft 4. When the lubricating oil is injected into the oil filling hole 22, the lubricating oil will flow along the oil filling hole 22 to the fitting place of the bearing 3 and the transmission shaft 4.

[0042] The working principle and use process of the utility model are as follows: first, in cold weather, when the connection between the transmission shaft 4 and the pump casing 7 is frozen and the impeller 5 cannot rotate normally, the threaded rod 13 can be twisted. The rotation of the threaded rod 13 can drive the two groups of transmission rods 14 to approach each other along the base 1, and drive the two groups of heating plates 15 to approach each other. When the two groups of heating plates 15 move, they will gradually contact the transmission shaft 4. At this time, the heating wire inside the heating plate 15 will transfer the emitted heat to the transmission shaft 4 and the pump casing 7, so that the ice melts. At this time, the impeller 5 can be used normally, and by setting the connecting plate 8, when the connecting plate 8 and the pad 9 are fixed, the stability of the pump casing 7 during operation can be enhanced.

[0043] When the impeller 5 needs to be inspected and repaired, it is only necessary to unscrew the first screw 12 to disassemble the sealing plate 11, so as to facilitate the maintenance of the internal components of the pump casing 7. By setting the filter tube 17, when water passes through the water inlet 16, impurities in the water will flow into the interior of the filter tube 17 through the through hole 20. By setting the limit baffle ring 21, when impurities enter, the limit baffle ring 21 will be pushed open. When the impurities want to flow out of the filter tube 17 under the action of the water flow, the limit baffle ring 21 will be pushed to open the limit baffle ring 21 and block the through hole 20 to prevent impurities from flowing out, thereby achieving the purpose of collecting impurities through the filter tube 17. Then, the second screw 24 can be unscrewed to remove the filter tube 17 from the inside of the water inlet 16 for cleaning.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A centrifugal pump with heating function, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a driving motor (2); a bearing (3) fixedly connected to the base (1) is provided on one side of the driving motor (2); a transmission shaft (4) fixedly connected to an output end of the driving motor (2) is rotatably connected inside the bearing (3); an impeller (5) is fixedly connected to the tail of the transmission shaft (4); a groove (6) is provided on the surface of the transmission shaft (4); a pump housing (7) is embedded in the groove (6); a connecting plate (8) is fixedly connected to one side of the pump housing (7); and the bottom of the connecting plate (8) is fixedly connected to a A pad (9) is fixedly connected to the base (1), a water outlet (10) is fixedly connected to the back of the pump housing (7), a sealing plate (11) is attached to the left side of the pump housing (7), the inner thread of the sealing plate (11) is connected to a first screw (12) embedded in the pump housing (7), one side of the drive motor (2) is provided with a threaded rod (13) rotatably connected to the base (1), the surface of the threaded rod (13) is threadedly connected to two groups of transmission rods (14) slidably connected to the base (1), and the tails of the two groups of transmission rods (14) are fixedly connected to a heating plate (15).

2. A centrifugal pump with heating function according to claim 1, characterized in that: A water inlet (16) is fixedly connected to one side of the sealing plate (11), a filter tube (17) is fitted inside the water inlet (16), a connecting ring (18) is threadedly connected to the inside of the filter tube (17), a connecting ring (19) is fixedly connected to the tail of the connecting ring (18), through holes (20) are provided on the sides of the connecting ring (19) and the filter tube (17), and the inner walls of the two groups of through holes (20) are fixedly connected to limit stop rings (21), an oil filling hole (22) is provided on the top of the bearing (3), a sealing plug (23) is inserted into the inside of the oil filling hole (22), and a second screw (24) embedded in the inside of the filter tube (17) is threadedly connected to the inside of the water inlet (16).

3. A centrifugal pump with heating function according to claim 1, characterized in that: The surface of the threaded rod (13) is provided with positive and negative threads, and the two groups of transmission rods (14) form a reverse sliding structure through the threaded rod (13).

4. A centrifugal pump with heating function according to claim 1, characterized in that: The centers of the two groups of heating plates (15) and the transmission shaft (4) are located at the same point, and the transmission shaft (4) is located on the movement tracks of the two groups of heating plates (15).

5. A centrifugal pump with heating function according to claim 1, characterized in that: The first screws (12) are arranged in a circular shape at equal distances with respect to the center of the sealing plate (11), and the sealing plate (11) forms a detachable structure through the first screws (12).

6. A centrifugal pump with heating function according to claim 2, characterized in that: The filter tube (17) is of hollow design, and the length of the filter tube (17) matches that of the water inlet (16).

7. A centrifugal pump with heating function according to claim 2, characterized in that: The position-limiting retaining rings (21) are arranged in three groups symmetrically about the center of the through hole (20), and the three groups of position-limiting retaining rings (21) are all designed to be inclined toward the inside of the filter tube (17).

8. A centrifugal pump with heating function according to claim 2, characterized in that: Threaded holes matching the size of the second screw (24) are provided on both sides of the filter tube (17), and the filter tube (17) is fixed inside the water inlet (16) via the second screw (24).

9. A centrifugal pump with heating function according to claim 2, characterized in that: The inner wall of the oil filling hole (22) is tightly fitted with the outer wall of the sealing plug (23), and the sealing plug (23) is a rubber rod.

10. A centrifugal pump with heating function according to claim 2, characterized in that: The oil injection hole (22) is designed to be vertically straight, and the tail of the oil injection hole (22) passes through the bearing (3) and fits the transmission shaft (4).

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