Double-end-face mechanical seal hot oil pump

Abstract

The utility model belongs to the technical field of hot oil pumps, and particularly relates to a double-end-face mechanical seal hot oil pump which comprises a base, the top of the base is fixedly connected with a pump body and a motor used for driving the hot oil pump, an output shaft of the motor is fixedly connected with a pump shaft, and a seal connecting assembly is arranged between the pump shaft and the pump body. A water tank is fixedly connected to the top of the base, a cooling tank is fixedly connected to one side of the pump body, and a water cooling assembly is arranged among the cooling tank, the pump shaft and the water tank. The double-end-face mechanical sealing structure is reasonable in structural design, the two sealing bearings are installed in the two shaft holes, the connecting positions between the shaft holes and the pump shaft can be sealed in a double-end-face mechanical sealing mode, the double-end-face mechanical sealing effect is greatly improved, liquid leakage is avoided, under comprehensive cooling of air cooling and water cooling, the cooling effect is greatly improved, and the service life of the pump shaft is prolonged. And therefore, the motor, the pump shaft and the pump body can be efficiently cooled, and the service life of the hot oil pump is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of hot oil pumps, in particular to a double-end mechanical seal hot oil pump. Background Art

[0002] Mechanical seal is a shaft sealing device for rotating machinery, such as centrifugal pumps, centrifuges, reactors and compressors. It is often used in the seal of hot oil pumps. Hot oil pumps are an ideal hot oil circulation pump or heat carrier delivery pump, and are ideal matching pumps for heat exchange equipment. They have been widely used in various industrial fields such as petroleum, chemical industry, rubber, plastics, pharmaceuticals, textiles, printing and dyeing, road construction, and food.

[0003] After searching: Patent number CN211449078U is an air-cooled hot oil pump, comprising a base and a pump body and a motor fixed at the upper end of the base, a pump cover is installed on the pump body, a pump shaft is connected to the pump cover, the pump shaft is passed through the bearing seat, and also includes an air-cooled heat dissipation device arranged between the motor and the pump body; the air-cooled heat dissipation device comprises a horizontally placed cylinder, a rotating shaft, a first fan blade, a second fan blade and a mounting frame, a partition is fixed inside the cylinder, a through hole is opened in the middle of the partition, a bushing is fixed in the through hole, the rotating shaft is inserted in the bushing, the first fan blade and the second fan blade are respectively fixed on the rotating shaft in the left chamber and the right chamber, and the blowing side of the first fan blade faces left, and the blowing side of the second fan blade faces right, the left end of the rotating shaft is connected to the pump shaft through a first coupling, and the right end of the rotating shaft is connected to the motor output shaft through a second coupling.

[0004] However, the above-mentioned air-cooled hot oil pump still has some shortcomings. The connection sealing between the double-end faces of the pump shaft and the pump body is poor, and leakage is prone to occur. At the same time, air cooling is only performed through the rotation of the fan blades, resulting in poor cooling effect on the motor, pump body and pump shaft, reducing the heat dissipation efficiency. Therefore, we propose a double-end mechanical seal hot oil pump to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the above-mentioned shortcomings and proposes a double-end mechanical seal hot oil pump.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A double-end mechanical seal hot oil pump comprises a base, a pump body and a motor for driving the hot oil pump are fixedly connected to the top of the base, a pump shaft is fixedly connected to the output shaft of the motor, a sealing connection assembly is arranged between the pump shaft and the pump body, a water tank is fixedly connected to the top of the base, a cooling box is fixedly connected to one side of the pump body, a water cooling assembly is arranged between the cooling box, the pump shaft and the water tank, and a fan blade is fixedly connected to the outer side of the pump shaft.

[0008] Preferably, the sealing connection assembly comprises two axial holes, which are respectively opened on both sides of the pump body, and two sealing bearings are provided in the fixed sleeves in the axial holes, and the pump shaft fixed sleeve is provided in the inner rings of the four sealing bearings.

[0009] Preferably, four heat-conducting plates are fixedly connected to one side of the pump body, a heat-conducting column is fixedly connected to one side of the heat-conducting plate, and the cooling box is fixedly connected to one end of the four heat-conducting columns.

[0010] Preferably, the water cooling assembly includes an upper pulley fixedly mounted on the outside of the pump shaft, a plurality of baffle rings fixedly connected to the cooling box and a box body fixedly connected to the top of the water tank, the inner walls on both sides of the box body are rotatably connected with a rotating shaft, the outer side of the rotating shaft is fixedly mounted with an impeller and a lower pulley in sequence from left to right, the lower pulley and the upper pulley are drivingly connected by the same belt, the box body and the cooling box are fixedly connected by the same water supply pipe, the water tank and the cooling box are fixedly connected by the same return pipe, and a water hole is opened on one side of the baffle ring.

[0011] Preferably, the water holes opened on two adjacent partition rings are arranged alternately up and down.

[0012] Preferably, the bottom of the box body is fixedly connected with a water inlet pipe, and the bottom end of the water inlet pipe extends into the water tank.

[0013] Preferably, a fixing seat is fixedly connected between the pump body and the base, and a motor seat is fixedly connected between the motor and the base.

[0014] Preferably, the top of the pump body is fixedly connected with an oil outlet pipe, and the front side of the pump body is fixedly connected with an oil inlet pipe.

[0015] In the utility model, a double-end mechanical seal hot oil pump is provided with shaft holes on both end faces of the pump body, and two sealing bearings are installed in each shaft hole, and the pump shaft is installed in the inner ring of the four sealing bearings. By installing two sealing bearings at one end, the connection between the shaft hole and the pump shaft can be doubly sealed, which greatly improves the effect of mechanical sealing and avoids leakage.

[0016] In the utility model, a double-end mechanical seal hot oil pump is described. The motor drives the rotation of the pump shaft, and then drives the impeller in the pump body to rotate, so as to achieve the effect of extracting and transporting hot oil. When working, the pump shaft automatically drives the rotation of the fan blades, so as to accelerate the air flow around the pump body and the motor, so as to achieve the effect of air cooling. While air cooling, the heat on the pump body can be transferred to the cooling box through the arrangement of the heat conduction plate and the heat conduction column. The pump shaft drives the operation of the upper pulley, the belt and the lower pulley. The lower pulley drives the rotating shaft and the impeller in the box to rotate. Under the rotation of the impeller, the water in the water tank can be pumped into the water inlet pipe, the box body and the water supply pipe, and finally enters the cooling box. Through the diversion of multiple baffle rings and the arrangement of water holes alternately opened up and down, the water flow is made to flow in an S-shaped manner up and down. The flowing water can fully absorb the heat on the heat pump shaft and the cooling box, so as to achieve the effect of water cooling the pump shaft and the pump body, and the water in the cooling box flows back into the water tank from the return pipe for reuse.

[0017] The utility model has a reasonable structural design. By installing two sealed bearings in the two shaft holes, the connection between the shaft hole and the pump shaft can be doubly sealed, which greatly improves the effect of the double-end mechanical seal and avoids leakage. Moreover, under the combined cooling of air cooling and water cooling, the cooling effect is greatly improved, and the motor, pump shaft and pump body can be efficiently dissipated to increase the service life of the hot oil pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a first-perspective stereoscopic view of a double-end mechanical seal hot oil pump proposed by the utility model;

[0019] Figure 2 This is a second perspective stereogram of a double-end mechanical seal hot oil pump proposed by the utility model;

[0020] Figure 3 A cross-sectional view of a double-end mechanical seal hot oil pump proposed by the utility model;

[0021] Figure 4 This is a structural schematic diagram of part A of a double-end mechanical seal hot oil pump proposed by the utility model;

[0022] Figure 5 The utility model provides a schematic structural diagram of the B part of a double-end mechanical seal hot oil pump.

[0023] In the figure: 1. base; 2. motor; 3. pump body; 4. pump shaft; 5. fan blades; 6. cooling box; 7. impeller; 8. heat conduction column; 9. heat conduction plate; 10. water tank; 11. box body; 12. rotating shaft; 13. lower pulley; 14. return pipe; 15. water supply pipe; 16. upper pulley; 17. belt; 18. shaft hole; 19. partition ring; 20. water hole; 21. sealed bearing; 22. water inlet pipe. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Reference Figure 1-5 A double-end mechanical seal hot oil pump comprises a base 1, a pump body 3 and a motor 2 for driving the hot oil pump are fixedly connected to the top of the base 1, a pump shaft 4 is fixedly connected to the output shaft of the motor 2, a sealing connection component is arranged between the pump shaft 4 and the pump body 3, a water tank 10 is fixedly connected to the top of the base 1, a cooling box 6 is fixedly connected to one side of the pump body 3, a water cooling component is arranged between the cooling box 6, the pump shaft 4 and the water tank 10, and a fan blade 5 is fixedly connected to the outer side of the pump shaft 4.

[0026] In the utility model, the sealing connection assembly includes two shaft holes 18, the two shaft holes 18 are respectively opened on both sides of the pump body 3, two sealing bearings 21 are fixedly sleeved in the shaft holes 18, the pump shaft 4 is fixedly sleeved in the inner rings of the four sealing bearings 21, shaft holes 18 are opened on both end faces of the pump body 3, and two sealing bearings 21 are installed in each shaft hole 18, and the pump shaft 4 is installed in the inner rings of the four sealing bearings 21. By installing two sealing bearings 21 at one end, the connection between the shaft hole 18 and the pump shaft 4 can be doubly sealed, which greatly improves the effect of mechanical sealing and avoids leakage.

[0027] In the utility model, four heat conducting plates 9 are fixedly connected to one side of the pump body 3, a heat conducting column 8 is fixedly connected to one side of the heat conducting plate 9, and a cooling box 6 is fixedly connected to one end of the four heat conducting columns 8. Through the arrangement of the heat conducting plates 9 and the heat conducting columns 8, the heat on the pump body 3 can be transferred to the cooling box 6.

[0028] In the utility model, the water cooling assembly includes an upper pulley 16 fixedly sleeved on the outer side of the pump shaft 4, a plurality of baffle rings 19 fixedly connected in the cooling box 6, and a box body 11 fixedly connected to the top of the water tank 10, the inner walls on both sides of the box body 11 are rotatably connected with a rotating shaft 12, the outer side of the rotating shaft 12 is fixedly sleeved with an impeller 7 and a lower pulley 13 in sequence from left to right, the lower pulley 13 and the upper pulley 16 are connected by a same belt 17 for transmission, the box body 11 and the cooling box 6 are fixedly connected with a same water supply pipe 15, the water tank 10 and the cooling box 6 are fixedly connected with a same return pipe 14, a water hole 20 is opened on one side of the baffle ring 19, and the water holes 20 opened on two adjacent baffle rings 19 are alternately arranged up and down, and when the pump shaft 4 is running, it will drive the rotation of the fan blades 5, thereby accelerating the pump body 3 and the periphery of the motor 2. The air flows, thereby achieving the effect of air cooling. During the air cooling, the heat on the pump body 3 can be transferred to the cooling box 6 through the arrangement of the heat conducting plate 9 and the heat conducting column 8. The pump shaft 4 drives the operation of the upper pulley 16, the belt 17 and the lower pulley 13. The lower pulley 13 drives the rotating shaft 12 and the impeller 7 in the box body 11 to rotate. Under the rotation of the impeller 7, the water in the water tank 10 can be pumped into the box body 11 and the water supply pipe 15, and finally enters the cooling box 6. Through the guidance of multiple baffle rings 19 and the arrangement of water holes 20 alternately opened up and down, the water flows in an S-shaped up and down flow. The flowing water can fully absorb the heat on the heat pump shaft 4 and the cooling box 6, thereby achieving the effect of water cooling the pump shaft 4 and the pump body 3, and the water in the cooling box 6 flows back into the water tank 10 from the return pipe 14 for reuse.

[0029] In the utility model, the bottom of the box body 11 is fixedly connected with a water inlet pipe 22 , and the bottom end of the water inlet pipe 22 extends into the water tank 10 , so as to conveniently pump the water in the water tank 10 into the box body 11 .

[0030] In the utility model, a fixing seat is fixedly connected between the pump body 3 and the base 1, a motor seat is fixedly connected between the motor 2 and the base 1, an oil outlet pipe is fixedly connected to the top of the pump body 3, and an oil inlet pipe is fixedly connected to the front side of the pump body 3, which can support and fix the pump body 3 and the motor 2 and facilitate the oil inlet and outlet of the pump body 3.

[0031] In the utility model, when in use, shaft holes 18 are provided on both end faces of the pump body 3, and two sealed bearings 21 are installed in each shaft hole 18, and the pump shaft 4 is installed in the inner ring of the four sealed bearings 21. By installing two sealed bearings 21 at one end, the connection between the shaft hole 18 and the pump shaft 4 can be doubly sealed, which greatly improves the effect of mechanical sealing and avoids leakage. The pump shaft 4 is driven to rotate by the motor 2, and then the impeller in the pump body 3 is driven to rotate, so as to achieve the effect of extracting and transporting hot oil. When working, the pump shaft 4 automatically drives the rotation of the fan blades 5, thereby accelerating the air flow around the pump body 3 and the motor 2, so as to achieve the effect of air cooling. While air cooling, the heat conduction plate 9 and the The setting of the heat-conducting column 8 can transfer the heat on the pump body 3 to the cooling box 6. The pump shaft 4 drives the operation of the upper pulley 16, the belt 17 and the lower pulley 13. The lower pulley 13 drives the rotating shaft 12 and the impeller 7 in the box body 11 to rotate. Under the rotation of the impeller 7, the water in the water tank 10 can be pumped into the water inlet pipe 22, the box body 11 and the water supply pipe 15, and finally enters the cooling box 6. Through the guidance of multiple baffle rings 19 and the setting of water holes 20 alternately opened up and down, the water flows in an S-shaped up and down flow. The flowing water can fully absorb the heat on the heat pump shaft 4 and the cooling box 6, thereby achieving the effect of water cooling the pump shaft 4 and the pump body 3, and the water in the cooling box 6 flows back into the water tank 10 from the return pipe 14 for reuse.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A double-end mechanical seal hot oil pump, characterized in that: The invention comprises a base (1), the top of the base (1) being fixedly connected to a pump body (3) and a motor (2) for driving a hot oil pump, the output shaft of the motor (2) being fixedly connected to a pump shaft (4), a sealing connection component being provided between the pump shaft (4) and the pump body (3), the top of the base (1) being fixedly connected to a water tank (10), one side of the pump body (3) being fixedly connected to a cooling box (6), a water cooling component being provided between the cooling box (6), the pump shaft (4) and the water tank (10), and a fan blade (5) being fixedly connected to the outer side of the pump shaft (4).

2. A double-end mechanical seal hot oil pump according to claim 1, characterized in that: The sealing connection assembly comprises two shaft holes (18), the two shaft holes (18) are respectively opened on both sides of the pump body (3), two sealing bearings (21) are fixedly sleeved in the shaft holes (18), and the pump shaft (4) is fixedly sleeved in the inner rings of the four sealing bearings (21).

3. A double-end mechanical seal hot oil pump according to claim 1, characterized in that: One side of the pump body (3) is fixedly connected to four heat-conducting plates (9), one side of the heat-conducting plates (9) is fixedly connected to a heat-conducting column (8), and the cooling box (6) is fixedly connected to one end of the four heat-conducting columns (8).

4. A double-end mechanical seal hot oil pump according to claim 1, characterized in that: The water cooling assembly comprises an upper pulley (16) fixedly sleeved on the outer side of a pump shaft (4), a plurality of baffle rings (19) fixedly connected to the cooling box (6), and a box body (11) fixedly connected to the top of a water box (10); a rotating shaft (12) is rotatably connected to the inner walls of both sides of the box body (11); an impeller (7) and a lower pulley (13) are fixedly sleeved on the outer side of the rotating shaft (12) in sequence from left to right; a belt (17) is transmission-connected between the lower pulley (13) and the upper pulley (16); a water supply pipe (15) is fixedly connected between the box body (11) and the cooling box (6); a return pipe (14) is fixedly connected between the water box (10) and the cooling box (6); and a water through hole (20) is opened on one side of the baffle ring (19).

5. A double-end mechanical seal hot oil pump according to claim 4, characterized in that: The water holes (20) formed on two adjacent partition rings (19) are arranged alternately up and down.

6. A double-end mechanical seal hot oil pump according to claim 4, characterized in that: The bottom of the box body (11) is fixedly connected to a water inlet pipe (22), and the bottom end of the water inlet pipe (22) extends into the water tank (10).

7. A double-end mechanical seal hot oil pump according to claim 1, characterized in that: A fixing seat is fixedly connected between the pump body (3) and the base (1), and a motor seat is fixedly connected between the motor (2) and the base (1).

8. The double-end mechanical seal hot oil pump according to claim 1, characterized in that: The top of the pump body (3) is fixedly connected to an oil outlet pipe, and the front side of the pump body (3) is fixedly connected to an oil inlet pipe.

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