High-concentration paper pulp conveying pump

Abstract

The utility model discloses a high-concentration paper pulp delivery pump, which relates to the technical field of paper pulp delivery pumps and comprises a bottom frame, a pump shell is fixedly mounted on the bottom frame, a pump shaft is rotatably arranged in the pump shell through a ball bearing, a round hole is formed in the outer ring of the ball bearing in a penetrating manner, a liquid inlet channel is formed in the wall body of the pump shell, and a liquid outlet channel is formed in the wall body of the pump shell. A liquid inlet channel is formed in the wall body of the pump shell and located above the ball bearing, a liquid outlet channel is further formed in the wall body of the pump shell and located below the ball bearing, the liquid inlet channel and the liquid outlet channel are both matched with the round hole, and the top of the pump shell is fixedly connected with a liquid box used for containing cooling oil. And the liquid box is communicated with the liquid inlet channel through the first square groove. According to the high-concentration paper pulp conveying pump, by arranging the round hole, the liquid inlet channel, the liquid outlet channel, the extrusion assembly and other structures, the ball bearing can be cooled and lubricated, chippings in the ball bearing can be cleaned, and the use efficiency of the high-concentration paper pulp conveying pump is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulp delivery pumps, in particular to a high-concentration pulp delivery pump. Background Art

[0002] Pulp pumps are widely used in the papermaking industry. The stability of their operation, service life and other factors closely affect the quality of paper products.

[0003] During the use of pulp pumps, the pump shaft is responsible for transmitting the torque of the motor to the impeller and is the main component for transmitting mechanical energy. Rolling bearings are provided to support the pump shaft. Rolling bearings are essential for reducing friction, improving pump efficiency and extending service life. After a long time, especially in pumps that transport high-concentration pulp, due to the high viscosity of the pulp, it will bring greater resistance to the pump shaft and rolling bearings, and the rolling friction and sliding friction inside the bearings will increase, resulting in an increase in friction speed, which in turn generates more heat. This increase in heat may not only increase the bearing temperature and affect the lubrication effect, but may also accelerate the wear and fatigue of the bearing material.

[0004] Therefore, it is necessary to propose a high-concentration pulp delivery pump to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a high-concentration pulp delivery pump to solve the problem that after a long time, especially when delivering high-concentration pulp, the pump shaft and rolling bearing will be subjected to greater resistance due to the high viscosity of the pulp, and the rolling friction and sliding friction inside the bearing will be aggravated, resulting in an increase in friction speed, thereby generating more heat. This increase in heat may not only increase the bearing temperature and affect the lubrication effect, but also accelerate the wear and fatigue of the bearing material.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-concentration pulp delivery pump, comprising a base frame, a pump shell is fixedly installed on the base frame, a pump shaft is rotatably arranged inside the pump shell through a ball bearing, a circular hole is penetrated on the outer ring of the ball bearing, a liquid inlet channel is opened inside the wall of the pump shell, the liquid inlet channel is located above the ball bearing, a liquid outlet channel is also opened inside the wall of the pump shell, the liquid outlet channel is located below the ball bearing, the liquid inlet channel and the liquid outlet channel are both matched with the circular hole, a liquid box for loading cooling oil is fixedly connected to the top of the pump shell, the liquid box is connected to the liquid inlet channel through a first square groove, a first one-way valve is fixedly installed inside the first square groove, a filter box is fixedly connected to the outer wall of the liquid box, the filter box is connected to the liquid box through a second square groove, a second one-way valve is fixedly installed inside the second square groove, the filter box is connected to the liquid outlet channel through a liquid pipe, and an extrusion assembly is arranged between the liquid box and the pump shaft.

[0007] Preferably, the circular holes are provided in plurality, and the plurality of circular holes are evenly distributed around the ball bearing.

[0008] Preferably, the extrusion assembly includes a pressing plate and a sliding column, the pressing plate is slidably connected to the inside of the liquid box, the sliding column is slidably connected to the top of the liquid box, and the pressing plate and the sliding column are fixedly connected.

[0009] Preferably, the extrusion assembly also includes a guide rod, a disc and a convex groove, the disc is fixedly connected to the pump shaft, the convex groove is arranged on a surface of the disc close to the liquid box, one end of the guide rod is fixedly connected to the sliding column, and the other end of the guide rod is slidably connected in the convex groove.

[0010] Preferably, a motor is fixedly connected to the top of the base frame, and a drive shaft of the motor is connected to the pump shaft via a coupling.

[0011] Technical effects and advantages of the utility model:

[0012] 1. The utility model can dissipate heat and lubricate the ball bearing and clean the debris inside it by arranging the circular hole, the liquid inlet channel, the liquid outlet channel and the extrusion assembly, thereby improving the use efficiency of the high-concentration pulp delivery pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a high-concentration pulp delivery pump from one perspective of the utility model.

[0014] Figure 2 This is a schematic structural diagram of the high-concentration pulp delivery pump of the utility model from another perspective.

[0015] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure in the middle.

[0016] Figure 4 For this utility model Figure 2 Enlarged schematic diagram of the structure at point B in the middle.

[0017] Figure 5 For this utility model Figure 2 Enlarged schematic diagram of the structure at point C in the middle.

[0018] Figure 6 This is a schematic diagram of the disc and convex groove structure of the utility model.

[0019] In the figure: 1, base frame; 2, pump housing; 3, pump shaft; 4, ball bearing; 5, round hole; 6, liquid inlet channel; 7, liquid box; 8, first square groove; 9, first one-way valve; 10, pressure plate; 11, sliding column; 12, guide rod; 13, disc; 14, convex groove; 15, liquid outlet channel; 16, filter box; 17, second square groove; 18, second one-way valve; 19, liquid pipe; 20, motor. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clarify the technical solutions in the embodiments of the utility model; it is completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in 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.

[0021] The utility model provides Figure 1 to Figure 6 A high-concentration pulp delivery pump shown in the figure includes a base frame 1, a pump housing 2 is fixedly mounted on the base frame 1, a pump shaft 3 is rotatably arranged inside the pump housing 2 through a ball bearing 4, and an impeller is arranged at one end of the pump shaft 3 inside the pump housing 2. The impeller is usually composed of a plurality of blades, and its shape and angle will affect the flow of the fluid and the performance of the pump. The pump housing 2 is provided with inlet and outlet pipes, which are responsible for the inflow and outflow of the liquid and generate pressure changes therein. The pump housing 2, the pump shaft 3 and the impeller are all existing common technologies and will not be described in detail here.

[0022] A motor 20 is fixedly connected to the top of the base frame 1 , and a driving shaft of the motor 20 is connected to the pump shaft 3 via a coupling. The motor 20 is configured to drive the pump shaft 3 to rotate.

[0023] Considering that the pulp delivery pump has been in use for a long time, especially when delivering high-concentration pulp, due to its high viscosity, it will bring greater resistance to the pump shaft 3 and the rolling bearing, and the rolling friction and sliding friction inside the bearing will be aggravated, resulting in an increase in friction speed, thereby generating more heat. This increase in heat may not only increase the bearing temperature and affect the lubrication effect, but also accelerate the wear and fatigue of the bearing material. In order to achieve heat dissipation and lubrication of the ball bearing 4, a circular hole 5 is provided through the outer ring of the ball bearing 4, and the circular hole 5 is set in multiple numbers, and the multiple circular holes 5 are evenly distributed around the ball bearing 4. A liquid inlet channel 6 is provided inside the wall of the pump housing 2, and the liquid inlet channel 6 is located above the ball bearing 4. A liquid outlet channel 15 is also provided inside the wall of the pump housing 2, and the liquid outlet channel 15 is located below the ball bearing 4. The liquid inlet channel 6 and the liquid outlet channel 15 are both matched with the circular hole 5. During specific use, cooling oil is transported to the ball bearing 4 through the liquid inlet channel 6, and the cooling oil will penetrate into the inner and outer rings of the ball bearing 4 through the circular hole 5, and the two sides of the ball bearing 4 are sealed; at the same time, the cooling oil can be discharged from the liquid outlet channel 15 to achieve the purpose of circulating flow and ensure the effect of heat dissipation and lubrication.

[0024] A liquid box 7 for loading cooling oil is fixedly connected to the top of the pump housing 2. The liquid box 7 is connected to the liquid inlet channel 6 through the first square groove 8. A first one-way valve 9 is fixedly installed inside the first square groove 8. The first one-way valve 9 allows the cooling oil in the liquid box 7 to be discharged into the liquid inlet channel 6 through the first square groove 8 without reverse flow.

[0025] Considering that the ball bearing 4 is prone to wear during high-speed rotation, in order to achieve the processing of debris, a filter box 16 is fixedly connected to the outer wall of the liquid box 7, and the filter box 16 is connected to the liquid box 7 through the second square groove 17. A second one-way valve 18 is fixedly installed inside the second square groove 17. A filter plate is arranged inside the filter box 16, and the filter plate is located above the second square groove 17. When the cooling oil enters the interior of the filter box 16, it will first pass through the filter plate, and the filter plate will filter it for easy recycling. The filter box 16 is connected to the liquid outlet channel 15 through a liquid pipe 19.

[0026] An extrusion assembly is provided between the liquid box 7 and the pump shaft 3, and the extrusion assembly includes a pressing plate 10 and a sliding column 11. The pressing plate 10 is slidably connected to the inside of the liquid box 7, and the sliding column 11 is slidably connected to the top of the liquid box 7. The pressing plate 10 and the sliding column 11 are fixedly connected. Since the pressing plate 10 slides up and down inside the liquid box 7, a pressure relief device can be provided on the top of the liquid box 7, including a structure such as an exhaust pipe, which can be adjusted according to specific usage conditions.

[0027] The extrusion assembly further includes a guide rod 12, a disc 13 and a convex groove 14. The disc 13 is fixedly connected to the pump shaft 3. The convex groove 14 is provided on a surface of the disc 13 close to the liquid box 7. The convex groove 14 includes a protruding portion and a regular portion. The distance between the protruding portion and the axis of the disc 13 is greater than the distance between the regular portion and the axis of the disc 13. The protruding portion and the regular portion have a smooth transition, which is convenient for cooperation with the guide rod 12. One end of the guide rod 12 is fixedly connected to the sliding column 11, and the other end of the guide rod 12 is slidably connected in the convex groove 14.

[0028] During operation, the pump shaft 3 rotates and drives the disc 13 to rotate synchronously. When the conventional part of the disc 13 contacts the guide rod 12, the slide column 11 drives the pressure plate 10 to slide downward. Under the cooperation of the first one-way valve 9 and the second one-way valve 18, the cooling oil is discharged from the first square groove 8 into the liquid inlet channel 6, and penetrates into the inner and outer rings of the ball bearing 4 through the circular hole 5 to dissipate heat and lubricate the ball bearing 4. When the disc 13 continues to rotate, the protruding part of the disc 13 contacts the guide rod 12, so that the slide column 11 drives the pressure plate 10 to slide downward. With the cooperation of the first one-way valve 9 and the second one-way valve 18, the cooling oil on the ball bearing 4 will be sucked through the filter box 16, the liquid pipe 19, the liquid outlet channel 15 and the circular hole 5. When the cooling oil enters the interior of the filter box 16, it will first pass through the filter plate, and the filter plate will filter the debris inside it, and then enter the interior of the liquid box 7 through the second square groove 17, so as to achieve the effect of debris cleaning, which is convenient for recycling. It can not only dissipate heat and lubricate the ball bearing 4, but also clean the debris inside it, and is particularly suitable for high-concentration pulp conveying pumps.

[0029] The utility model can dissipate heat and lubricate the ball bearing 4 and clean the debris inside thereof by arranging the circular hole 5, the liquid inlet channel 6, the liquid outlet channel 15 and the extrusion assembly, thereby improving the use efficiency of the high-concentration pulp delivery pump.

[0030] In addition, a cooling device (not shown in the figure) can be provided on the liquid pipe 19, including a cooling plate and other structures, which can cool down the circulating cooling oil. The cooling device is a common technology in the prior art and will not be described in detail here.

Claims

1. A high-concentration pulp delivery pump, comprising a base frame (1), characterized in that: A pump housing (2) is fixedly mounted on the base frame (1), a pump shaft (3) is rotatably arranged inside the pump housing (2) via a ball bearing (4), a circular hole (5) is penetrated through the outer ring of the ball bearing (4), a liquid inlet channel (6) is arranged inside the wall of the pump housing (2), the liquid inlet channel (6) is located above the ball bearing (4), a liquid outlet channel (15) is also arranged inside the wall of the pump housing (2), the liquid outlet channel (15) is located below the ball bearing (4), the liquid inlet channel (6) and the liquid outlet channel (15) are both matched with the circular hole (5), and the top of the pump housing (2) is provided with a liquid inlet channel (6). A liquid box (7) for loading cooling oil is fixedly connected, the liquid box (7) is connected to the liquid inlet channel (6) through a first square groove (8), a first one-way valve (9) is fixedly installed inside the first square groove (8), a filter box (16) is fixedly connected to the outer wall of the liquid box (7), the filter box (16) is connected to the liquid box (7) through a second square groove (17), a second one-way valve (18) is fixedly installed inside the second square groove (17), the filter box (16) is connected to the liquid outlet channel (15) through a liquid pipe (19), and an extrusion assembly is arranged between the liquid box (7) and the pump shaft (3).

2. A high-concentration pulp delivery pump according to claim 1, characterized in that: The circular holes (5) are arranged in plurality, and the plurality of circular holes (5) are evenly distributed around the ball bearing (4).

3. A high-concentration pulp delivery pump according to claim 1, characterized in that: The extrusion assembly comprises a pressing plate (10) and a sliding column (11); the pressing plate (10) is slidably connected to the inside of the liquid box (7); the sliding column (11) is slidably connected to the top of the liquid box (7); and the pressing plate (10) and the sliding column (11) are fixedly connected.

4. A high-concentration pulp delivery pump according to claim 3, characterized in that: The extrusion assembly further comprises a guide rod (12), a disc (13) and a convex groove (14); the disc (13) is fixedly connected to the pump shaft (3); the convex groove (14) is provided on a surface of the disc (13) close to the liquid box (7); one end of the guide rod (12) is fixedly connected to the sliding column (11); the other end of the guide rod (12) is slidably connected in the convex groove (14).

5. A high-concentration pulp delivery pump according to claim 1, characterized in that: A motor (20) is fixedly connected to the top of the base frame (1), and a drive shaft of the motor (20) is connected to a pump shaft (3) via a coupling.

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