Low-temperature-resistant centrifugal pump

Abstract

The utility model discloses a low temperature resistant centrifugal pump, which belongs to the technical field of centrifugal pumps, and comprises a bottom plate and a motor, the output end of the motor is fixedly connected with a rotating shaft, the rotating shaft is fixedly connected with an impeller, the rotating shaft is fixedly connected with a belt pulley I, the belt pulley I is provided with a belt I, and the belt I is provided with a belt II. The rotary shaft is driven to rotate by starting the motor, water can be pumped in from the round pipe and pumped out from the water outlet pipe under the action of the impeller, and the water can be pumped out from the water outlet pipe through the impeller. Then a fan and a first ventilation opening are driven to rotate under the action of a first belt wheel, a first belt and a second belt wheel, hot air generated by heat dissipation of the motor can be discharged into a protection box through the first ventilation opening during operation, accordingly, low-temperature damage is prevented, the practicability of the device is enhanced, and the protection box can be driven to slide in a limiting groove by rotating a first threaded rod; therefore, the round pipe is closed and opened, and maintenance is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pumps, in particular to a low-temperature resistant centrifugal pump. Background Art

[0002] A centrifugal pump is a pump that transports liquid by the centrifugal force generated by the rotation of the impeller. According to the number of impellers, it can be divided into single-stage pumps and multi-stage pumps. According to the working pressure, it can be divided into low-pressure pumps, medium-pressure pumps and high-pressure pumps. Centrifugal pumps have the characteristics of compact structure, uniform flow, stable operation, easy installation and maintenance, etc. They are now widely used in liquid transportation, industrial cleaning, aquaculture and other fields.

[0003] Existing centrifugal pumps have the following disadvantages: simple structure, poor low temperature resistance, low temperature outside the centrifugal pump can easily penetrate into the inside of the centrifugal pump, causing the centrifugal pump to be easily damaged by low temperature, shortening the service life of the centrifugal pump and increasing the cost of maintenance and replacement. Utility Model Content

[0004] The utility model solves the technical problems in the above-mentioned background technology and provides a low-temperature resistant centrifugal pump.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0006] A low-temperature resistant centrifugal pump comprises a base plate and a motor, wherein the output end of the motor is fixedly connected to a rotating shaft, an impeller is fixedly connected to the rotating shaft, a pulley 1 is fixedly connected to the rotating shaft, a belt 1 is provided on the pulley 1, two pulleys are respectively provided at both ends of the belt 1, a rotating rod is fixedly connected to the pulley 2, a fan is fixedly connected to the rotating rod, a vertical plate is fixedly connected to the base plate, a vent 1 is provided on the vertical plate, a round tube is fixedly connected to the vertical plate, and a water outlet pipe is provided on one side of the round tube.

[0007] Preferably, one side of the vertical plate is rotatably connected to a threaded rod 1, both ends of the threaded rod 1 are respectively threadedly connected to a protection box, a limiting groove is provided on the bottom plate, the protection box slides in the limiting groove, an electric heating rod is fixedly connected inside the protection box, and a vent 2 is provided on one side of the protection box.

[0008] Preferably, a mounting platform is fixedly connected to the bottom plate, brackets are respectively provided on both sides of the motor, the brackets are fixedly connected to the mounting platform by bolts, and a push handle is provided on one side of the bottom plate.

[0009] Preferably, a square plate is slidably connected to the bottom of the base plate, a spring is fixedly connected to the bottom of the square plate, one end of the spring is fixedly connected to the base plate, a universal wheel is provided below the square plate, a wedge block is provided on the square plate, a threaded rod 2 is rotatably connected to the base plate, both ends of the threaded rod 2 are threadedly connected to threaded blocks, and the threaded blocks slide on the base plate.

[0010] Preferably, the diameter of the pulley 1 is larger than the diameter of the rotating rod, the impeller is located below the water outlet pipe, two groups of vents 1 are provided, the vents 1 are located around the rotating rod, and the pulley 1 and the rotating rod are rotatably connected on a vertical plate.

[0011] Preferably, the circular tube is located in the middle of the two groups of rotating shafts, the water outlet pipe is located in the middle of the two groups of protection boxes, the threaded rod 1 is provided with two groups of opposite threaded structures, and the threaded rod 1 is located above the circular tube.

[0012] Preferably, the push handle is U-shaped, the base plate is U-shaped, four groups of bolts are provided, several groups of springs are provided, four groups of universal wheels are provided, and two groups of opposite threaded structures are provided on the threaded rod.

[0013] With the above structure, the utility model has the following advantages:

[0014] 1. The utility model starts the motor to drive the rotating shaft to rotate, and under the action of the impeller, water can be pumped into the round pipe and out of the water outlet pipe, and then the fan and the vent 1 are driven to rotate under the action of the pulley 1, the belt 1, and the pulley 2. During operation, the hot air dissipated by the motor can be discharged into the protective box through the vent 1, thereby preventing damage due to low temperature, thereby enhancing the practicality of the device, and by rotating the threaded rod 1, the protective box can be driven to slide in the limit groove, thereby closing and opening the round pipe for easy maintenance.

[0015] 2. The utility model can drive two groups of threaded blocks to slide toward the middle at the same time by rotating the second threaded rod, and under the action of the wedge block, the square plate drives the universal wheel to move downward, so that the universal wheel fits the ground, thereby facilitating the movement of the device. When in use, the universal wheel is retracted to ensure stability, and the interior can also be heated through the vertical plate to make it more resistant to low temperatures, thereby enhancing the versatility of the device.

[0016] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of a low-temperature resistant centrifugal pump of the utility model. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of a low-temperature resistant centrifugal pump of the utility model. Figure 2 ;

[0020] Figure 3 This is a cross-sectional view of a low-temperature resistant centrifugal pump of the utility model;

[0021] Figure 4 yes Figure 2 Enlarged view of point A in .

[0022] As shown in the figure: 1. Base plate; 2. Motor; 3. Rotating shaft; 4. Impeller; 5. Pulley 1; 6. Belt 1; 7. Pulley 2; 8. Rotating rod; 9. Fan; 10. Vent 1; 11. Vertical plate; 12. Round pipe; 13. Water outlet pipe; 14. Threaded rod 1; 15. Protective box; 16. Limiting groove; 17. Electric heating rod; 18. Vent 2; 19. Mounting table; 20. Bracket; 21. Bolt; 22. Push handle; 23. Square plate; 24. Spring; 25. Universal wheel; 26. Wedge block; 27. Threaded rod 2; 28. Threaded block. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0024] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] The utility model is further described in detail below in conjunction with the full text:

[0026] Combined with Figures 1 to 4 A low temperature resistant centrifugal pump comprises a bottom plate 1 and a motor 2. The output end of the motor 2 is fixedly connected with a rotating shaft 3, the rotating shaft 3 is fixedly connected with an impeller 4, the rotating shaft 3 is fixedly connected with a pulley 5, the pulley 5 is provided with a belt 6, both ends of the belt 6 are provided with pulleys 7, the pulley 7 is fixedly connected with a rotating rod 8, the rotating rod 8 is fixedly connected with a fan 9, the bottom plate 1 is fixedly connected with a vertical plate 11, the vertical plate 11 is provided with a vent 10, the vertical plate 11 is fixedly connected with a round pipe 12, and one side of the round pipe 12 is provided with a water outlet pipe 13, By starting the motor 2 to drive the rotating shaft 3 to rotate, water can be drawn into the circular tube 12 and out of the water outlet pipe 13 under the action of the impeller 4, and then the fan 9 and the vent 10 are driven to rotate under the action of the pulley 15, the belt 16 and the pulley 27. During operation, the hot air dissipated by the motor 2 can be discharged into the protective box 15 through the vent 10, thereby preventing damage due to low temperature, thereby enhancing the practicality of the device, and by rotating the threaded rod 14, the protective box 15 can be driven to slide in the limit groove 16, thereby closing and opening the circular tube 12 for easy maintenance.

[0027] Among them, one side of the vertical plate 11 is rotatably connected with a threaded rod 14, and both ends of the threaded rod 14 are respectively threadedly connected with a protective box 15, a limiting groove 16 is provided on the bottom plate 1, and the protective box 15 slides in the limiting groove 16. An electric heating rod 17 is fixedly connected in the protective box 15, and a vent 2 18 is provided on one side of the protective box 15. A mounting platform 19 is fixedly connected to the bottom plate 1, and brackets 20 are respectively provided on both sides of the motor 2. The brackets 20 are fixedly connected to the mounting platform 19 by bolts 21. One side of the bottom plate 1 is provided with a push The handle 22 is slidably connected to a square plate 23 below the bottom plate 1, a spring 24 is fixedly connected to the bottom of the square plate 23, one end of the spring 24 is fixedly connected to the bottom plate 1, a universal wheel 25 is provided below the square plate 23, a wedge block 26 is provided on the square plate 23, a threaded rod 27 is rotatably connected to the bottom plate 1, and threaded blocks 28 are threadedly connected to the two ends of the threaded rod 27, and the threaded blocks 28 slide on the bottom plate 1, the diameter of the pulley 1 5 is larger than the diameter of the rotating rod 8, and the impeller 4 is located below the outlet pipe 13. The vent 10 is provided with two groups, and the vent 10 is located around the rotating rod 8. The pulley 15 and the rotating rod 8 are connected to the vertical plate 11 through rotation. The round tube 12 is located in the middle of the two groups of rotating shafts 3. The water outlet pipe 13 is located in the middle of the two groups of protective boxes 15. The threaded rod 14 is provided with two groups of opposite thread structures. The threaded rod 14 is located above the round tube 12. The push handle 22 is U-shaped, and the bottom plate 1 is U-shaped. There are four groups of bolts 21, and there are several groups of springs 24. The universal wheel 25 is provided with Four groups, two groups of opposite thread structures are provided on the threaded rod 27, and the two groups of threaded blocks 28 can be driven to slide toward the middle at the same time by rotating the threaded rod 27, and the square plate 23 drives the universal wheel 25 to move downward under the action of the wedge block 26, so that the universal wheel 25 is in contact with the ground, thereby facilitating the movement of the device, and the universal wheel 25 is retracted when in use, thereby ensuring stability, and the interior can also be heated through the vertical plate 11, so that it has a better low-temperature resistance effect, thereby enhancing the versatility of the device.

[0028] The working principle of the utility model is as follows: first, the device is pushed to the designated location by the push handle 22 and the universal wheel 25, and then the threaded rod 27 is manually rotated to drive the two sets of threaded blocks 28 to slide to both sides, slide out the wedge block 26, and make the wedge block 26 located in the middle of the threaded block 28. At this time, under the action of the spring 24 of the courageous group, the square plate 23 drives the universal wheel 25 to move upward and not fit the ground, so that the bottom plate 1 supports the device, and then the suction pipe and the drainage pipe are respectively connected to the circular pipe 12 and the outlet pipe 13, and the motor 2 is started to drive the rotating shaft 3 to rotate, so that the impeller 4 rotates, and water is drawn into the circular pipe 12 and discharged from the outlet pipe 13. The rotation of the driving shaft 3 drives the pulley 1 5 to rotate, and under the action of the belt 1 6, the two sets of pulleys 2 7 are driven to rotate at the same time, so that the rotating rod 8 rotates on the vertical plate 11 and drives the fan 9 to rotate, and the hot air emitted by the motor 2 is discharged into the protection box 15 through the vent 10 to increase the temperature of the interior. The vent 2 18 on the protection box 15 can effectively ventilate to prevent excessive internal pressure. When the temperature is too low, the electric heating rod 17 is started to increase the temperature. When the interior needs to be inspected, the threaded rod 14 is manually rotated to drive the two sets of protection boxes 15 to slide to both sides on the limit groove 16 at the same time, so that the interior can be inspected.

[0029] The above describes the utility model and its implementation methods, which is not restrictive. What is shown in the full text is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.

Claims

1. A low temperature resistant centrifugal pump, comprising a base plate (1) and a motor (2), characterized in that: The output end of the motor (2) is fixedly connected to a rotating shaft (3), an impeller (4) is fixedly connected to the rotating shaft (3), a pulley (5) is fixedly connected to the rotating shaft (3), a belt (6) is provided on the pulley (5), two pulleys (7) are respectively provided at both ends of the belt (6), a rotating rod (8) is fixedly connected to the pulley (7), a fan (9) is fixedly connected to the rotating rod (8), a vertical plate (11) is fixedly connected to the bottom plate (1), a vent (10) is provided on the vertical plate (11), a round tube (12) is fixedly connected to the vertical plate (11), and a water outlet pipe (13) is provided on one side of the round tube (12).

2. A low temperature resistant centrifugal pump according to claim 1, characterized in that: One side of the vertical plate (11) is rotatably connected to a threaded rod (14), and both ends of the threaded rod (14) are respectively threadedly connected to a protection box (15). A limiting groove (16) is provided on the bottom plate (1), and the protection box (15) slides in the limiting groove (16). An electric heating rod (17) is fixedly connected to the protection box (15), and a ventilation hole (18) is provided on one side of the protection box (15).

3. A low temperature resistant centrifugal pump according to claim 2, characterized in that: A mounting platform (19) is fixedly connected to the bottom plate (1), brackets (20) are respectively provided on both sides of the motor (2), the brackets (20) are fixedly connected to the mounting platform (19) by bolts (21), and a push handle (22) is provided on one side of the bottom plate (1).

4. A low temperature resistant centrifugal pump according to claim 3, characterized in that: A square plate (23) is slidably connected to the bottom of the bottom plate (1), a spring (24) is fixedly connected to the bottom of the square plate (23), one end of the spring (24) is fixedly connected to the bottom plate (1), a universal wheel (25) is provided below the square plate (23), a wedge block (26) is provided on the square plate (23), a threaded rod (27) is rotatably connected to the bottom plate (1), both ends of the threaded rod (27) are threadedly connected to threaded blocks (28), and the threaded block (28) slides on the bottom plate (1).

5. A low temperature resistant centrifugal pump according to claim 4, characterized in that: The diameter of the pulley 1 (5) is larger than the diameter of the rotating rod (8), the impeller (4) is located below the water outlet pipe (13), two groups of vents 1 (10) are provided, the vents 1 (10) are located around the rotating rod (8), and the pulley 1 (5) and the rotating rod (8) are rotatably connected to a vertical plate (11).

6. A low temperature resistant centrifugal pump according to claim 5, characterized in that: The circular tube (12) is located in the middle of the two groups of rotating shafts (3), the water outlet pipe (13) is located in the middle of the two groups of protection boxes (15), and the threaded rod (14) is provided with two groups of opposite thread structures, and the threaded rod (14) is located above the circular tube (12).

7. A low temperature resistant centrifugal pump according to claim 6, characterized in that: The push handle (22) is in a U-shape, the bottom plate (1) is in a U-shape, four groups of bolts (21) are provided, several groups of springs (24) are provided, four groups of universal wheels (25) are provided, and two groups of opposite threaded structures are provided on the second threaded rod (27).

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