System for preventing overload jump stop of Roots blower

Abstract

The utility model relates to a system for preventing overload jump stop of a Roots blower, which belongs to the field of operation control and protection of blowers and comprises a vulcanizing blower, a chute blower and the Roots blower. The vulcanization fan is communicated with the dust removal box body through an aluminum spraying cylinder air supply pipeline, one side of the aluminum spraying cylinder air supply pipeline is communicated with a fresh feeding chute, and one side of the bottom of the dust removal box body is communicated with the top of the air elevator through a recovery chute; the chute fan is communicated with the recovery chute through a recovery chute air supply pipeline; the Roots blower is communicated with the bottom of the air elevator through an air supply pipeline of the air elevator, and a discharge hole is formed in the top of the air elevator; the recovery chute air supply pipeline is provided with a pneumatic butterfly valve, the air elevator air supply pipeline is provided with a pressure sensor, and the pressure sensor is connected with the pneumatic butterfly valve; the problem that a Roots blower for supplying air to an air elevator runs in an overload mode and is easily damaged when a large number of materials enter the air elevator at a time in traditional equipment is solved.

Description

Technical Field

[0001] The utility model relates to a system for preventing a Roots blower from tripping due to overload, belonging to the field of operation control and protection of blowers. Background Art

[0002] The flue gas purification system for electrolytic aluminum is composed of multiple independent boxes for flue gas purification, and alumina powder as the production raw material is used as the adsorbent; when the box is operating normally, fresh alumina powder passes through the fresh feeding chute 6 and is lifted into the dust removal box body 5 by a small air lift to participate in the adsorption reaction; a cloth bag is installed inside the dust removal box body 5, and the reacted material is separated from the flue gas through the cloth bag. The material adsorbed on the cloth bag is blown off under the action of back blowing, and then is transported to the air lift 8 through the recovery chute 7 and lifted into the fluorine-bearing alumina bin by the air lift 8.

[0003] According to the DC power grid leakage protection system disclosed in Chinese invention patent CN110190583A, the present invention discloses a DC power grid leakage protection system, including a bridge, a breaking module and a detection module; the first end of the bridge is connected to the first end of the breaking module through positive and negative DC busbars; the second end of the bridge and the second end of the breaking module are connected to a current through positive and negative DC busbars; the bridge and the breaking module are connected to the detection module; the current value of the bridge is detected by the detection module, and when the detected current value exceeds a preset range, it is determined that there is a leakage fault in the positive and negative DC busbars, and the fault is isolated through the breaking module, and the fault point of the leakage is judged; compared with the prior art, the present application can automatically detect the insulation of the DC power grid and protect against leakage, thereby ensuring the power supply safety.

[0004] In the traditional equipment, when the material falling into the dust removal box body 5 is uneven and a large amount of material enters the air lift 8 at one time, the Roots blower 3 that supplies air to the air lift 8 will operate overloaded, which is extremely easy to damage the Roots blower 3. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is that when a large amount of material enters the air lift at one time in the traditional equipment, the Roots blower that supplies air to the air lift will operate overloaded, which is extremely easy to damage the Roots blower.

[0006] A system for preventing a Roots blower from tripping due to overload according to the utility model includes a vulcanizing blower, a chute blower and a Roots blower;

[0007] The vulcanizing blower is connected to the dust removal box body through an aluminizing cylinder air supply pipeline, and a fresh feeding chute is connected to one side of the aluminizing cylinder air supply pipeline. One side of the bottom of the dust removal box body is connected to the top of the air lift through a recovery chute; the chute blower is connected to the recovery chute through a recovery chute air supply pipeline; the Roots blower is connected to the bottom of the air lift through an air lift air supply pipeline, and a discharge port is provided at the top of the air lift;

[0008] The air supply pipeline of the recovery chute is equipped with a pneumatic butterfly valve;

[0009] The air supply pipeline of the air lift is equipped with a pressure sensor;

[0010] It also includes a field control cabinet, which is connected to a pressure sensor, a pneumatic butterfly valve, a vulcanization fan, a chute fan and a Roots blower.

[0011] The vulcanization fan provides the wind source for the fresh alumina. The fresh feeding chute provides the structure for the fresh alumina to enter the system. The dust removal box body separates the flue gas for the incoming fresh alumina. The recovery chute provides the structure for the separated alumina solid to enter the air lift. The chute fan provides the air pressure for the recovery chute through the air supply pipeline of the recovery chute; The Roots blower provides the wind source for the air lift, and the filtered alumina solid is discharged through the discharge port driven by the wind force provided by the Roots blower;

[0012] The pneumatic butterfly valve is used to control the on-off of the gas generated by the chute fan entering the recovery chute;

[0013] The pressure sensor is used to detect the air pressure in the air supply pipeline of the air lift;

[0014] The field control cabinet is used to control the pressure sensor, the pneumatic butterfly valve, the connected vulcanization fan, the chute fan and the Roots blower, and plays the role of real-time monitoring of the air supply pressure of the air lift.

[0015] Furthermore, a spraying aluminum cylinder is provided on one side of the fresh feeding chute. The spraying aluminum cylinder is cylindrical, and the fresh feeding chute is connected to the spraying aluminum cylinder air supply pipeline through the spraying aluminum cylinder.

[0016] The fresh feeding chute is connected to the spraying aluminum cylinder air supply pipeline through the spraying aluminum cylinder. The cylindrical structure of the spraying aluminum cylinder can be externally connected to the outer wall of the spraying aluminum cylinder air supply pipeline, and the fresh feeding chute adds fresh alumina into the spraying aluminum cylinder air supply pipeline through the spraying aluminum cylinder.

[0017] Furthermore, the top of the spraying aluminum cylinder air supply pipeline is located in the middle of the dust removal box body.

[0018] The spraying aluminum cylinder air supply pipeline located in the middle of the dust removal box body can evenly disperse the fresh alumina inside the dust removal box body, so as to be used for flue gas separation.

[0019] Furthermore, a controller is provided inside the field control cabinet, and the bottom of the field control cabinet is connected to a fixing seat.

[0020] The controller is used for automatic and precise control, and the fixing seat is used to provide stable support to avoid damage to the controller due to large noise and vibration in the site by large equipment.

[0021] Furthermore, the fixing seat includes a top plate, mounting legs and a bottom plate;

[0022] There are at least four mounting legs, and a shock absorber is connected to the middle of the mounting legs.

[0023] The top plate serves to install and fix the on-site control cabinet, the bottom plate serves to connect to the ground, the mounting legs are used to connect the top plate and the bottom plate, increasing the height of the on-site control cabinet to prevent water leakage in the workshop from damaging the controller;

[0024] Preferably, there are four mounting legs, and the shock absorber can be connected to the top mounting legs and the top mounting legs to play a shock-absorbing role.

[0025] Furthermore, the bottom plate is provided with mounting holes, and an anti-disengagement member is provided on the upper surface of the mounting holes;

[0026] There are at least four mounting holes.

[0027] The mounting holes are used to place standard parts and play a role in connecting to the ground. The anti-disengagement member is used to prevent the standard parts from rotating in the reverse direction due to vibration during use, thereby strengthening the fixed connection effect;

[0028] Preferably, the number of mounting holes is four.

[0029] Furthermore, the model of the Roots blower is ARE200.

[0030] The Roots blower has the functions of supplying air and increasing pressure and having a stable flow rate.

[0031] Compared with the prior art, the beneficial effects of the present utility model are:

[0032] For the overload trip prevention system of the Roots blower described in the present utility model, the vulcanization blower provides the wind source for the fresh alumina, the fresh feeding chute provides the structure for the fresh alumina to enter the system, the dust removal box body separates the flue gas for the incoming fresh alumina, the recovery chute provides the structure for the separated alumina solid to enter the air lift, and the chute blower provides the wind pressure for the recovery chute through the recovery chute air supply pipeline; the Roots blower provides the wind source for the air lift, and the filtered alumina solid is discharged through the discharge port driven by the wind provided by the Roots blower; the pneumatic butterfly valve is used to control the on-off of the gas generated by the chute blower entering the recovery chute; the pressure sensor is used to detect the air pressure in the air supply pipeline of the air lift; the on-site control cabinet is used to control the pressure sensor, the pneumatic butterfly valve, and connect the vulcanization blower, the chute blower and the Roots blower, playing the role of real-time monitoring of the air supply pressure of the air lift; solving the problem that when there is too much material entering the air lift at one time in the traditional equipment, the Roots blower supplying air to the air lift will operate overloaded, which is extremely likely to cause damage to the Roots blower. Description of the Drawings

[0033] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present utility model;

[0034] Figure 2 is a perspective view of the on-site control cabinet in Embodiment 1 of the present utility model;

[0035] Figure 3 is a perspective view of the fixed seat in Embodiment 1 of the present utility model;

[0036] Figure 4 is Figure 3 a partial enlarged view of position A in

[0037] In the figure: 1, vulcanization blower; 2, chute blower; 3, Roots blower; 4, air supply pipeline for spraying aluminum cylinder; 5, dust removal box body; 6, fresh feeding chute; 7, recovery chute; 8, air lift; 9, air supply pipeline for recovery chute; 10, air supply pipeline for air lift; 11, discharge port; 12, pneumatic butterfly valve; 13, pressure sensor; 14, on-site control cabinet;

[0038] 61, spraying aluminum cylinder;

[0039] 141, controller; 142, fixed seat;

[0040] 1421, top plate; 1422, mounting leg; 1423, bottom plate; 1424, shock absorber; 1425, mounting hole; 1426, anti-disengagement part. Specific implementation mode

[0041] Embodiment 1

[0042] As Figures 1 to 4 shown, a Roots blower overload trip prevention system of the present utility model includes a vulcanization blower 1, a chute blower 2 and a Roots blower 3;

[0043] The vulcanization blower 1 is connected to the dust removal box body 5 through the air supply pipeline 4 for the spraying aluminum cylinder. One side of the air supply pipeline 4 for the spraying aluminum cylinder is connected to the fresh feeding chute 6. One side of the bottom of the dust removal box body 5 is connected to the top of the air lift 8 through the recovery chute 7; the chute blower 2 is connected to the recovery chute 7 through the air supply pipeline 9 for the recovery chute; the Roots blower 3 is connected to the bottom of the air lift 8 through the air supply pipeline 10 for the air lift. The top of the air lift 8 is provided with a discharge port 11;

[0044] The air supply pipeline 9 for the recovery chute is provided with a pneumatic butterfly valve 12;

[0045] The air supply pipeline 10 for the air lift is provided with a pressure sensor 13;

[0046] It further includes an on-site control cabinet 14, and the on-site control cabinet 14 is connected to the pressure sensor 13, the pneumatic butterfly valve 12, the vulcanization blower 1, the chute blower 2 and the Roots blower 3.

[0047] The vulcanization blower 1 provides the wind source for the fresh alumina. The fresh feeding chute 6 provides the structure for the fresh alumina to enter the system. The dust removal box body 5 separates the flue gas from the incoming fresh alumina. The recovery chute 7 provides the structure for the separated alumina solid to enter the air lift 8. The chute blower 2 provides air pressure for the recovery chute 7 through the recovery chute air supply pipeline 9; The Roots blower 3 provides the wind source for the air lift 8. The filtered alumina solid is discharged through the discharge port 11 driven by the wind provided by the Roots blower 3;

[0048] The pneumatic butterfly valve 12 is used to control the on-off of the gas generated by the chute blower 2 entering the recovery chute 7;

[0049] The pressure sensor 13 is used to detect the air pressure in the air lift air supply pipeline 10;

[0050] The on-site control cabinet 14 is used to control the pressure sensor 13, the pneumatic butterfly valve 12, and connect the vulcanization blower 1, the chute blower 2, and the Roots blower 3, playing the role of real-time monitoring of the air supply pressure of the air lift 8;

[0051] At the same time, adjust the pressure sensor 13, set an upper limit value and a lower limit value for the pressure sensor 13. When the dust removal box body 5 discharges too much material at one time due to a fault and enters the air lift 8 concentratedly, it will cause the air pressure in the air lift air supply pipeline 10 to rise, the pipeline pressure to rise, directly resulting in an increase in the load of the Roots blower 3 that supplies air to the air lift 8, and even overload operation; When the upper limit set by the pressure sensor 13 is reached, the pressure sensor 13 outputs a signal to the on-site control cabinet 14. The on-site control cabinet 14 controls the pneumatic butterfly valve 12 to close, closes the air supply pipeline of the chute blower 2 to the recovery chute 7, stops supplying air to the recovery chute 7, and the material in the recovery chute 7 stops boiling due to the lack of air source, and at this time the material in the chute cannot flow into the air lift 8 under the action of its own gravity, and the material in the recovery chute 7 stops flowing;

[0052] At this time, the load of the Roots blower 3, the air supply equipment of the air lift 8, stops rising. As the material in the air lift 8 decreases, the load gradually decreases, and the pressure in the air lift air supply pipeline 10 also decreases. When the pressure in the air lift air supply pipeline 10 drops to the set lower limit, the pressure sensor 13 stops outputting a signal. At this time, the on-site control cabinet 14 cannot receive the signal from the pressure sensor 13, and the on-site control cabinet 14 controls the pneumatic butterfly valve 12 to open, and the recovery chute 7 resumes air supply. The material in the recovery chute 7 boils under the action of the air pressure and begins to flow into the air lift 8 under the action of its own gravity. This process repeats, ensuring that the air lift 8 operates within a certain pressure range and avoiding the equipment damage caused by the overload operation of the Roots blower 3 that supplies air to it due to overpressure operation.

[0053] Such as Figure 1As shown in the figure, as an optimization, a spray aluminum cylinder 61 is provided on one side of the fresh feeding chute 6. The spray aluminum cylinder 61 is cylindrical, and the fresh feeding chute 6 is connected to the spray aluminum cylinder air supply pipe 4 through the spray aluminum cylinder 61.

[0054] The fresh feeding chute 6 is connected to the spray aluminum cylinder air supply pipe 4 through the spray aluminum cylinder 61. The cylindrical structure of the spray aluminum cylinder 61 can be externally connected to the outer wall of the spray aluminum cylinder air supply pipe 4, and the fresh feeding chute 6 adds fresh alumina into the spray aluminum cylinder air supply pipe 4 through the spray aluminum cylinder 61.

[0055] As Figure 1 shown in the figure, as an optimization, the top of the spray aluminum cylinder air supply pipe 4 is located in the middle of the dust removal box body 5.

[0056] The spray aluminum cylinder air supply pipe 4 located in the middle of the dust removal box body 5 can evenly disperse the fresh alumina inside the dust removal box body 5, so as to be used for flue gas separation.

[0057] As Figure 2 、 Figure 3 and Figure 4 shown in the figure, as an optimization, a controller 141 is provided in the on-site control cabinet 14, and the bottom of the on-site control cabinet 14 is connected to a fixed seat 142.

[0058] The controller 141 is used for automatic and precise control, and the fixed seat 142 is used to provide stable support to prevent the controller 141 from being damaged by equipment with large noise and vibration on the site.

[0059] Furthermore, the fixed seat 142 includes a top plate 1421, mounting legs 1422 and a bottom plate 1423;

[0060] There are at least four mounting legs 1422, and a shock absorber 1424 is connected to the middle of the mounting legs 1422.

[0061] The top plate 1421 serves to install and fix the on-site control cabinet 14, the bottom plate 1423 serves to connect to the ground, and the mounting legs 1422 are used to connect the top plate 1421 and the bottom plate 1423 to increase the height of the on-site control cabinet 14 and prevent the controller 141 from being damaged by water leakage in the workshop;

[0062] Preferably, there are four mounting legs 1422, and the shock absorber 1424 can be connected to the top mounting legs 1422 and the top mounting legs 1422 to play a shock-absorbing role.

[0063] As Figure 2 、 Figure 3 and Figure 4 shown in the figure, as an optimization, the bottom plate 1423 is provided with mounting holes 1425, and an anti-disengagement member 1426 is provided on the upper surface of the mounting holes 1425;

[0064] There are at least four mounting holes 1425.

[0065] The mounting holes 1425 are used to place standard parts and play a connecting role with the ground. The anti-loosening parts 1426 are used to prevent the standard parts from rotating in the reverse direction due to vibration during use, thereby enhancing the fixed connection effect.

[0066] Preferably, the number of the mounting holes 1425 is four.

[0067] As Figure 1 shown, the model of the Roots blower 3 is ARE200.

[0068] The Roots blower 3 has the functions of supplying air for supercharging and stable flow.

[0069] Working process or working principle:

[0070] Change the air supply butterfly valve of the recovery chute 7 to a pneumatic butterfly valve 12. At the same time, install a pressure sensor 13 on the air supply pipeline 10 of the air lift, and adjust the pressure sensor 13 so that the pressure value when the signal set by the pressure sensor 13 is output is less than the pressure when the Roots blower 3 trips. In this way, when a large amount of materials fall into the dust removal box body 5 at one time, the pressure of the Roots blower 3 continuously increases. When the pressure reaches the set pressure of the pressure sensor 13, the pressure sensor 13 outputs a signal to close the pneumatic butterfly valve 12 for the air supply of the recovery chute 7. After the pneumatic butterfly valve 12 is closed, the air supply of the recovery chute 7 stops, and the materials inside the recovery chute 7 do not boil due to the lack of air pressure and cannot move forward by relying on their own gravity, and the feeding of the air lift 8 stops. At this time, for the Roots blower 3 that supplies air to the air lift 8, the load stops increasing, avoiding the Roots blower 3 tripping due to overloading or causing equipment damage due to excessive feeding of the air lift 8 at one time;

[0071] When the air supply pressure drops to a certain value, the pressure sensor 13 stops signal output, the pneumatic butterfly valve 12 opens, and air is supplied to the recovery chute 7, and the materials start to enter the air lift 8, ensuring that the Roots blower 3 that supplies air to the air lift 8 operates within a certain load range and avoiding the failures caused by the equipment operating overloaded.

[0072] In the present utility model, the description of the directions and relative position relationships of the structures, such as the descriptions of front, back, left, right, up, and down, does not constitute a limitation to the present utility model and is only for the convenience of description.

Claims

1. A system for preventing the overload trip of a Roots blower, characterized in that, It includes a vulcanization blower (1), a chute blower (2) and a Roots blower (3); The vulcanization blower (1) is connected to the dust removal box body (5) through an aluminized cylinder air supply pipeline (4). One side of the aluminized cylinder air supply pipeline (4) is connected to a fresh feeding chute (6). One side of the bottom of the dust removal box body (5) is connected to the top of an air lift (8) through a recovery chute (7). The chute blower (2) is connected to the recovery chute (7) through a recovery chute air supply pipeline (9). The Roots blower (3) is connected to the bottom of the air lift (8) through an air lift air supply pipeline (10). There is a discharge port (11) at the top of the air lift (8); The recovery chute air supply pipeline (9) is provided with a pneumatic butterfly valve (12); The air lift air supply pipeline (10) is provided with a pressure sensor (13); It further includes a field control cabinet (14). The field control cabinet (14) is connected to the pressure sensor (13), the pneumatic butterfly valve (12), the vulcanization blower (1), the chute blower (2) and the Roots blower (3).

2. The overload prevention and trip-stop system for a Roots blower according to claim 1, wherein, One side of the fresh feeding chute (6) is provided with an aluminized cylinder (61). The aluminized cylinder (61) is cylindrical. The fresh feeding chute (6) is connected to the aluminized cylinder air supply pipeline (4) through the aluminized cylinder (61).

3. The overload prevention and trip-stop system for a Roots blower according to claim 2, wherein, The top of the aluminized cylinder air supply pipeline (4) is located in the middle of the dust removal box body (5).

4. The overload prevention and trip-stop system for a Roots blower according to claim 3, wherein, There is a controller (141) inside the field control cabinet (14). The bottom of the field control cabinet (14) is connected to a fixing seat (142).

5. The system for preventing the Roots blower from tripping due to overload according to claim 4, characterized in that, The fixing seat (142) includes a top plate (1421), mounting legs (1422) and a bottom plate (1423); There are at least four mounting legs (1422). A shock absorber (1424) is connected to the middle of the mounting legs (1422).

6. The overload prevention and trip-stop system for a Roots blower according to claim 5, characterized in that, The bottom plate (1423) is provided with mounting holes (1425). An anti - detachment part (1426) is provided on the upper surface of the mounting holes (1425); There are at least four mounting holes (1425).

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