A double screw pump with high stability

Abstract

The utility model relates to the field of double screw pump discloses a high stability double screw pump, including the pump shell, the one end wall board of pump shell is equipped with the rotary limit frame, is equipped with the first rotary lever in the rotary limit frame, the first rotary lever approaches the rotary limit frame and is equipped with the driving gear, the driving gear other side is equipped with the first rotary bearing on the first rotary lever, is equipped with the pump cavity in the pump shell. The utility model is provided with the bearing and the anti -drop frame connected with the pump body in the shaft end of two rotors, can guarantee the setting stability of pump body to two rotors, can avoid the rubbing and bumping of rotor and pump cavity when the pressure in the pump cavity changes or appears extreme condition, guarantees the installation use safety of two rotors, when the pressure in the pump cavity is greater than the critical value, can temporarily store the part of raw materials in the pump cavity in the catheter and its containing cavity, can reduce the raw material pressure in the pump cavity, reduces the risk of pump body operation.

Description

Technical Field

[0001] This utility model relates to the field of twin-screw pump technology, and more specifically, to a twin-screw pump with high stability. Background Technology

[0002] A pump is a machine that transports fluids or pressurizes liquids. It transfers the mechanical energy of a prime mover or other external energy to the liquid, increasing the liquid's energy. Pumps are mainly used to transport liquids or gases such as water, oil, acids and alkalis, emulsions, and liquid metals. They can also transport liquid-gas mixtures and liquids containing suspended solids. Pumps are generally classified according to their working principle into positive displacement pumps, dynamic pumps, and other types. Pumps are increasingly widely used and are very popular. However, during use, if too much liquid or other substances are added, the internal pressure of the pump body becomes excessive, leading to malfunctions. In particular, if there is no limiting structure between the rotor and the pump output end, the two sets of rotors inside the pump body will rub against the pump cavity, causing the pump body to jam or even the pump shaft to break. Furthermore, the temperature of the pump body changes during use, leading to uneven material transport. Therefore, a highly stable twin-screw pump is proposed. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address at least one of the aforementioned problems, this invention first provides a highly stable twin-screw pump, which effectively improves the installation stability and safety of the twin-screw pump and enhances its practicality.

[0005] (II) Technical Solution

[0006] To solve the aforementioned technical problem, this utility model provides a highly stable twin-screw pump, including a pump casing. A rotation limiting frame is provided on one end wall of the pump casing. A first rotating rod is provided inside the rotation limiting frame. A driving gear is provided on the first rotating rod near the rotation limiting frame. A first rotating bearing is provided on the first rotating rod on the other side of the driving gear. A pump chamber is provided inside the pump casing, and a first rotor is provided within the pump chamber. A second rotating rod is provided beside the first rotating rod. A driven gear is provided on the second rotating rod near the rotation limiting frame. A second rotating bearing is provided on the first rotating rod on the other side of the driven gear. A second rotor is provided within the pump chamber. The other ends of the first rotor and the second rotor are rotatably connected to the output bearing. The bottom of the pump chamber is provided with an adjustment chamber, a float is provided in the adjustment chamber, and a conduit is provided in the adjustment chamber. When the twin-screw pump is working, the raw material is introduced into the pump chamber. The driving gear drives the driven gear to make the first rotor and the second rotor rotate relative to each other. During this period, the first rotating bearing and the second rotating bearing limit the installation of the input ends of the two sets of rotating rods, and the output bearing limits the installation of the output ends of the two sets of rotating rods. When the pressure inside the pump chamber is high, the float moves down and connects the conduit to the pump chamber through the adjustment chamber, pressing a part of the raw material into the conduit for temporary storage to balance the pressure in the pump chamber.

[0007] Furthermore, the rotating input end of the pump chamber is provided with a first anti-detachment bracket, and the rotating output end of the pump chamber is provided with a second anti-detachment bracket. The first anti-detachment bracket is rotatably connected to one end of the first rotating rod and the second rotating rod, and the second anti-detachment bracket is rotatably connected to the other end of the first rotating rod and the second rotating rod.

[0008] Furthermore, the top of the inner cavity of the adjustment chamber is provided with an annular return block, which partially overlaps with the edge of the float in the vertical direction. The float is provided with an upper magnet, and a lower magnet is provided below the float. The lower magnet has a notch in the center, and the conduit extends into the adjustment chamber from the notch.

[0009] Furthermore, the outer edge of the annular return block is provided with multiple sets of through grooves, and each through groove is provided with a one-way valve.

[0010] Furthermore, the other end of the conduit is provided with a receiving cavity, and the other end of the receiving cavity is provided with an air pump.

[0011] Furthermore, the pump chamber is provided with a group of outlet pipes along the edge of the rotating input end, and an anti-loosening bracket is provided at the connection between the group of outlet pipes and the pump chamber.

[0012] Furthermore, the outer end of the pump cavity is provided with an anti-corrosion layer, the outer end of the anti-corrosion layer is provided with a first reinforcing layer, and the outer end of the first reinforcing layer is provided with a sound-absorbing layer.

[0013] Furthermore, the pump housing has a lubricating oil chamber within the cavity where the rotary input end is located, and an oil pump is installed within the lubricating oil chamber.

[0014] (III) Beneficial Effects

[0015] This utility model provides a highly stable twin-screw pump, which has bearings and anti-disengagement frames connected to the pump body at the shaft ends of both sets of rotors. This ensures the stability of the pump body's mounting on the two sets of rotors and prevents the rotors from rubbing against the pump cavity when the pressure inside the pump cavity changes or extreme situations occur, ensuring the safe installation and use of both sets of rotors. The adjustable chamber allows for connection between the pump cavity and the conduit. When the pressure inside the pump cavity exceeds a critical value, a portion of the material inside the pump cavity can be temporarily stored in the conduit and its accommodating chamber, which can quickly reduce the material pressure inside the pump cavity and reduce the risk of pump operation. Attached Figure Description

[0016] Figure 1 This is a front view of the twin-screw pump according to an embodiment of the present invention;

[0017] Figure 2 for Figure 1 A sectional view of the twin-screw pump along line AA;

[0018] Figure 3 for Figure 2 Schematic diagram of the structure of region B in the middle;

[0019] Figure 4 for Figure 3 Schematic diagram of the structure of region C in the middle;

[0020] Figure 5 for Figure 4 A schematic diagram showing the alignment of the central floating block and the annular return block.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1 is the rotation limit frame, 2 is the driving gear, 3 is the first rotating bearing, 4 is the first rotating rod, 5 is the first rotor, 6 is the output end bearing, 7 is the filter air inlet frame, 8 is the driven gear, 9 is the second rotating bearing, 10 is the second rotating rod, 11 is the second rotor, 12 is the first anti-detachment frame, 13 is the second anti-detachment frame, 14 is the pump chamber, 15 is the first reinforcing layer, 16 is the sound-absorbing layer, 17 is the lubricating oil chamber, 18 is the oil pump, 19 is the anti-corrosion layer, 20 is the liquid outlet pipe group, 21 is the regulating chamber, 22 is the float, 23 is the upper magnet, 24 is the lower magnet, 25 is the conduit, 26 is the accommodating chamber, 27 is the air pump, 28 is the second reinforcing layer, and 29 is the annular return material block. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] See Figures 1 to 5 This utility model provides a highly stable twin-screw pump, including a pump casing. A rotation limit frame 1 is provided on one end wall of the pump casing. A first rotating rod 4 is provided inside the rotation limit frame 1. A driving gear 2 is provided near the rotation limit frame 1 on the first rotating rod 4. A first rotating bearing 3 is provided on the other side of the driving gear 2 on the first rotating rod 4. A pump chamber 14 is provided inside the pump casing. A first rotor 5 is provided inside the pump chamber 14. A second rotating rod 10 is provided beside the first rotating rod 4. A driven gear 8 is provided near the rotation limit frame 1 on the second rotating rod 10. A second rotating bearing 9 is provided on the other side of the driven gear 8 on the first rotating rod 4. A second rotor 11 is provided inside the pump chamber 14 on the second rotating rod 10. The first rotor 5 and the second rotor 11 are connected to the pump chamber 14. The pump chamber 14 is rotatably connected to the output bearing 6. The bottom of the pump chamber 14 is provided with an adjustment chamber 21, a float 22 is provided in the adjustment chamber 21, and a guide tube 25 is provided in the adjustment chamber 21. When the twin-screw pump is working, the raw material is introduced into the pump chamber 14 from the outer end of the pump casing. The driving gear 2 drives the driven gear 8 to rotate the first rotor 5 and the second rotor 11 relative to each other. During this period, the first rotating bearing 3 and the second rotating bearing 9 limit the installation of the input end of the two sets of rotating rods, and the output bearing 6 limits the installation of the output end of the two sets of rotating rods, thereby improving the stability of the pump body operation. When the pressure inside the pump chamber 14 is high, the float 22 moves down and connects the guide tube 25 to the pump chamber 14 through the adjustment chamber 21, pressing a part of the raw material into the guide tube 25 for temporary storage, thereby balancing the pressure in the pump chamber 14.

[0025] See Figure 2 and Figure 3 The motor controls the rotation of the drive gear 2, which in turn drives the driven gear 8 to rotate in the opposite direction. This causes the first rotating rod 4 and the second rotating rod 10 to rotate relative to each other. The blades of the first rotor 5 and the second rotor 11 rotate without contacting each other and are interlocked. This adjusts the kinetic and potential energy of the raw material in the pump chamber 14. The rotation limit of the two sets of rotating rods is enhanced by the first rotating bearing 3 and the second rotating bearing 9. The output bearing 6 provides stable support for the two sets of rotating rods. When the pressure in the pump chamber 14 changes, the two sets of propellers will not rub against each other, effectively avoiding accidents and ensuring the safe use of the twin-screw pump.

[0026] The pump chamber 14 is provided with an adjustment chamber 21 at the bottom of the feed end. The connection state of the adjustment chamber 21 is changed by the pressure inside the pump chamber 14. When the pressure inside the pump chamber 14 exceeds the critical value, the pump chamber 14 and the conduit 25 become connected. A part of the raw material in the pump chamber 14 will flow into the conduit 25 through the adjustment chamber 21, thereby adjusting the pressure inside the pump chamber 14 and reducing the risk of pump failure.

[0027] See Figure 2 The pump chamber 14 has a first anti-detachment bracket 12 at its rotating input end and a second anti-detachment bracket 13 at its rotating output end. The first anti-detachment bracket 12 is rotatably connected to one end of the first rotating rod 4 and the second rotating rod 10, and the second anti-detachment bracket 13 is rotatably connected to the other end of the first rotating rod 4 and the second rotating rod 10. The first anti-detachment bracket 12 limits the connection of the rotating input end of the pump chamber 14 to one end of the first rotating rod 4 and the second rotating rod 10, and the second anti-detachment bracket 13 limits the connection of the rotating output end of the pump chamber 14 to the other end of the first rotating rod 4 and the second rotating rod 10. That is, during the operation of the pump body, the first rotating rod 4 and the second rotating rod 10 are always connected to the frame of the pump chamber 14 due to the limiting control of the first anti-detachment bracket 12 and the second anti-detachment bracket 13, preventing the two sets of rotors from rubbing against the pump chamber 14, which could cause the pump body to jam or even break the pump shaft.

[0028] See Figure 4 and Figure 5 An annular return block 29 is provided at the top of the inner cavity of the regulating chamber 21. The annular return block 29 and the edge of the float 22 partially overlap in the vertical direction. An upper magnet 23 is provided inside the float 22, and a lower magnet 24 is provided below the float 22. The lower magnet 24 has a notch in the center. The guide tube 25 extends into the regulating chamber 21 through the notch. The upper magnet 23 and the lower magnet 24 are magnets with the same poles. Utilizing the property of repulsion between like poles, the float 22 is in a suspended state, so that the upper structure of the float 22 is embedded between the annular return blocks 29. The inner edge of the annular return block 29 and the lower end of the float 22 are aligned. With overlapping structures, when the pressure in the pump chamber 14 is under normal conditions, the float 22 is used to block the raw material in the pump chamber 14. When the pressure in the pump chamber 14 is under abnormal conditions, the pressure is greater than the repulsive force between the upper magnet 23 and the lower magnet 24. The upper magnet 23 moves down, causing the float 22 to move down at the same amplitude, breaking the contact between the float 22 and the annular return block 29. A channel appears below the annular return block 29, allowing a portion of the material in the pump chamber 14 to flow from the regulating chamber 21 into the conduit 25. This can effectively adjust the pressure in the pump chamber 14 and prevent pump malfunctions.

[0029] The outer edge of the annular return block 29 is provided with multiple sets of through grooves, and one-way valves are provided in each through groove. The one-way valves control the raw material to be discharged from the regulating chamber 21 to the pump chamber 14. When the pressure in the pump chamber 14 does not affect the float 22, the raw material in the accommodating chamber 26 and the conduit 25 can be controlled to be pushed back into the regulating chamber 21. Since the conduit 25 is designed as a narrow pipe, the raw material remaining inside it during the return can be reduced, thus reducing the loss of raw material.

[0030] The other end of the conduit 25 is provided with a receiving cavity 26, and the other end of the receiving cavity 26 is provided with an air pump 27. The inner cavity of the receiving cavity 26 is provided with a pusher frame that is in close contact with its inner wall. The air pump 27 inputs gas into the receiving cavity 26, which can push the pusher frame to the opposite side, and push the raw material in the receiving cavity 26 from the conduit 25 into the regulating cavity 21, thereby reducing the residue of the regulating raw material and reducing resource waste.

[0031] The outer end of the accommodating cavity 26 and the conduit 25 is provided with a second reinforcing layer 28, which can increase the structural strength of the two and avoid the negative impact of pressure changes of the raw materials on their structure.

[0032] See Figure 2 The pump chamber 14 is provided with a liquid outlet pipe group 20 at the edge of the rotating input end. The connection between the liquid outlet pipe group 20 and the pump chamber 14 is provided with an anti-loosening bracket. The pump chamber 14 restricts the installation of the liquid outlet pipe group 20 through the anti-loosening bracket. The raw material adjusted by the twin screw is output from the liquid outlet pipe group 20. The liquid outlet pipe group 20 is directly connected to the pump chamber 14, which reduces the difficulty of material discharge and ensures smooth material discharge.

[0033] The pump chamber 14 is provided with an anti-corrosion layer 19 at its outer end, a first reinforcing layer 15 at its outer end, and a sound-absorbing layer 16 at its outer end. The anti-corrosion layer 19 can enhance the corrosion resistance of the pump chamber 14 and extend its service life. The first reinforcing layer 15 can enhance the structural performance of the pump chamber 14 and prevent its structural stability from being affected by changes in raw material pressure and potential energy. The sound-absorbing layer 16 can absorb the noise generated by the pump body during operation and reduce noise pollution in the production environment.

[0034] The pump casing has a lubricating oil chamber 17 in the cavity where the rotating input end is located. The lubricating oil chamber 17 is equipped with an oil pump 18. The lubricating oil chamber 17 stores a certain amount of lubricating oil, and the oil pump 18 circulates the lubricating oil to the multiple interconnected cavities inside the pump body. The flow of lubricating oil is used to cool the inside of the pump body and effectively adjust the operating temperature of the pump body.

[0035] The pump body has a filter air inlet frame 7 at the location of the output bearing 6, which can generate cooling airflow into the pump body cavity. Each connection structure of the pump body has gaps in the overlapping direction to provide flow direction for the airflow, thereby assisting in the temperature regulation of the pump body.

[0036] This utility model provides a highly stable twin-screw pump. Raw material enters the pump chamber 14, and the motor drives the drive gear 2 to rotate. The driven gear 8 rotates relative to the drive gear 2, causing two sets of rotors to rotate relative to each other at the same amplitude. This adjusts the potential energy of the raw material entering the pump chamber 14. The regulating chamber 21 can automatically adjust the distance between the upper magnet 23 and the lower magnet 24 when the pressure in the pump chamber 14 is abnormal. Connecting the regulating chamber 21 and the pump chamber 14, a portion of the raw material in the pump chamber 14 can be guided to the receiving chamber 26 via the conduit 25, thereby reducing the pressure in the pump chamber 14. When the pressure in the pump chamber 14 is significantly reduced, the raw material in the receiving chamber 26 can be pushed back into the pump chamber 14 by the air pump 27, avoiding material waste.

[0037] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. A highly stable twin-screw pump, characterized in that, The system includes a pump casing, a rotation limit frame (1) on one end wall of the pump casing, a first rotating rod (4) inside the rotation limit frame (1), a drive gear (2) near the rotation limit frame (1) on the first rotating rod (4), a first rotating bearing (3) on the other side of the drive gear (2) on the first rotating rod (4), a pump chamber (14) inside the pump casing, a first rotor (5) inside the pump chamber (14) on the first rotating rod (4); a second rotating rod (10) beside the first rotating rod (4), a driven gear (8) near the rotation limit frame (1) on the second rotating rod (10), a second rotating bearing (9) on the first rotating rod (4) on the other side of the driven gear (8), a second rotor (11) inside the pump chamber (14) on the second rotating rod (10); and the first rotor (5) and the second rotor (11) on the other side of the pump casing. The pump chamber (14) is rotatably connected to the output bearing (6). The bottom of the pump chamber (14) is provided with an adjustment chamber (21). The adjustment chamber (21) is provided with a float (22). The adjustment chamber (21) is provided with a conduit (25). When the twin screw pump is working, the raw material is introduced into the pump chamber (14). The driving gear (2) drives the driven gear (8) to rotate the first rotor (5) and the second rotor (11) relative to each other. During this period, the first rotating bearing (3) and the second rotating bearing (9) limit the installation of the input end of the two sets of rotating rods. The output bearing (6) limits the installation of the output end of the two sets of rotating rods. When the pressure inside the pump chamber (14) is large, the float (22) moves down and connects the conduit (25) to the pump chamber (14) through the adjustment chamber (21). A part of the raw material is pressed into the conduit (25) for temporary storage to balance the pressure of the pump chamber (14).

2. The highly stable twin-screw pump according to claim 1, characterized in that, The pump chamber (14) has a first anti-detachment frame (12) at its rotating input end and a second anti-detachment frame (13) at its rotating output end. The first anti-detachment frame (12) is rotatably connected to one end of the first rotating rod (4) and the second rotating rod (10), and the second anti-detachment frame (13) is rotatably connected to the other end of the first rotating rod (4) and the second rotating rod (10).

3. The highly stable twin-screw pump according to claim 1, characterized in that, The top of the inner cavity of the regulating cavity (21) is provided with an annular return block (29). The annular return block (29) and the edge of the float (22) partially overlap in the vertical direction. The float (22) is provided with an upper magnet (23). The float (22) is provided with a lower magnet (24) below it. The lower magnet (24) has a notch in the center. The guide tube (25) extends into the regulating cavity (21) from the notch.

4. A highly stable twin-screw pump according to claim 3, characterized in that, The outer edge of the annular return block (29) is provided with multiple sets of through grooves, and each through groove is provided with a one-way valve.

5. A highly stable twin-screw pump according to claim 1, characterized in that, The other end of the conduit (25) is provided with a receiving cavity (26), and the other end of the receiving cavity (26) is provided with an air pump (27).

6. A highly stable twin-screw pump according to claim 1, characterized in that, The pump chamber (14) is provided with a group of outlet pipes (20) at the edge of the rotating input end, and an anti-loosening bracket is provided at the connection between the group of outlet pipes (20) and the pump chamber (14).

7. A highly stable twin-screw pump according to claim 1, characterized in that, The pump chamber (14) is provided with an anti-corrosion layer (19) at its outer end, and a first reinforcing layer (15) is provided at its outer end. The first reinforcing layer (15) is provided with a sound-absorbing layer (16) at its outer end.

8. A highly stable twin-screw pump according to claim 1, characterized in that, The pump housing has a lubricating oil chamber (17) in the cavity where the rotating input end is located, and an oil pump (18) is provided in the lubricating oil chamber (17).

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