A synthesis reactor for preparing m-chloroaniline

Abstract

The invention discloses a synthesis reactor for preparing m-chloroaniline, belongs to the technical field of m-chloroaniline preparation, and comprises: a shell, the shell consists of an upper shell and a lower shell, a support frame is arranged on a side of the upper shell away from the lower shell, a hydraulic cylinder is arranged on the support frame, a push rod of the hydraulic cylinder is connected to the upper shell, a mixing device is arranged in the shell, and the mixing device comprises: a reaction chamber; staff transport aniline and chlorine into the reaction chamber respectively, the mixing device mixes the aniline and the chlorine, so that the aniline and the chlorine react fully, thereby improving the efficiency of m-chloroaniline preparation, when the equipment is running, the shell is always in a sealed state, when the equipment needs to be repaired, a controller controls the hydraulic cylinder on the support frame to start, so that the upper shell is separated from the lower shell, and then the staff repairs the equipment through the gap between the upper shell and the lower shell, thereby improving the quality of subsequent m-chloroaniline preparation.

Description

Technical Field

[0001] The invention relates to the technical field of m-chloroaniline preparation, in particular to a synthesis reaction kettle for m-chloroaniline preparation. Background Art

[0002] The industrial production of chloroaniline uses o-nitrochlorobenzene as raw material through a reduction method. The reactor is one of the important equipment in the preparation process. The reactor disperses, mixes, dissolves, and stirs the materials.

[0003] The reactor usually uses a stirring device as an auxiliary part to complete the above functions. However, in the process of preparing chloroaniline in the existing reactor, the various component raw materials will be separated under the action of centrifugal force during the long-term stirring process, resulting in the inability to effectively mix the raw materials, which ultimately affects the preparation quality of m-chloroaniline. Summary of the invention

[0004] The object of the present invention is to provide a synthesis reactor for preparing m-chloroaniline to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A synthesis reactor for preparing m-chloroaniline, comprising: a shell, the shell consisting of an upper shell and a lower shell, the upper shell is located above the lower shell, a support frame is arranged on the side of the upper shell away from the lower shell, a hydraulic cylinder is arranged on the support frame, a push rod of the hydraulic cylinder is connected to the upper shell, a mixing device is arranged in the shell, and the mixing device comprises: a reaction chamber, the reaction chamber is arranged between the upper shell and the lower shell;

[0007] The staff transports aniline and chlorine into the reaction chamber respectively, and then the controller controls the mixing device to start. The mixing device mixes aniline and chlorine, so that aniline and chlorine react fully, thereby improving the efficiency of m-chloroaniline preparation. When the equipment is running, the upper shell and the lower shell are always in contact, so that the shell is in a sealed state. When the equipment needs to be repaired, the controller controls the hydraulic cylinder on the support frame to start, and the push rod of the hydraulic cylinder drives the upper shell to move, and the upper shell moves to the side away from the lower shell, so that the upper shell is separated from the lower shell, and then the staff repairs the equipment through the gap between the upper shell and the lower shell, thereby improving the quality of subsequent m-chloroaniline preparation.

[0008] Preferably, a flow groove is provided in the reaction chamber, a plurality of partition plates are provided on the surface of the flow groove, a height of the flow groove close to the edge of the lower shell body is higher than a height of the flow groove close to the center of the lower shell body, and a liquid outlet is provided at the center of the lower shell body.

[0009] Preferably, the flow trough is composed of a horizontal flow trough, a first inclined trough, a first jump trough, a second inclined trough, a second jump trough and a third inclined trough. The horizontal flow trough is located on the side of the flow trough close to the edge of the lower shell body, the side of the horizontal flow trough away from the edge of the lower shell body is provided with a first inclined trough, and the side of the first inclined trough away from the horizontal flow trough is provided with a first jump trough.

[0010] Preferably, a second inclined groove is arranged on the side of the first jump groove away from the first inclined groove, a second jump groove is arranged on the side of the second jump groove away from the first jump groove, and a third inclined groove is arranged on the side of the second jump groove close to the center of the lower shell.

[0011] Preferably, the surfaces of the first jump groove and the second jump groove are both provided with a slope, and the height of the slope close to the edge of the lower shell body is lower than the height of the slope close to the center of the lower shell body.

[0012] Preferably, the surfaces of the first chute, the second chute and the third chute are each provided with a plurality of gas delivery ports, the plurality of gas delivery ports are arranged around the axis of the flow trough, a gas delivery ring is provided on the side of the gas delivery port away from the center of the lower shell body, the bottoms of the plurality of gas delivery rings are connected through pipelines, a gas storage tank is provided outside the shell body, an air pump is provided inside the gas storage tank, and the air pump is connected to the gas delivery ring through a pipeline.

[0013] Preferably, a solenoid valve is provided in the liquid outlet, a plurality of infusion ports are provided on the side of the liquid outlet close to the reaction chamber, the plurality of infusion ports are arranged around the axis of the lower shell, an infusion channel is provided on the side of the infusion port away from the liquid outlet, a water pump is provided in the infusion channel, a water inlet is provided on the side wall of the advection trough, the water pump is connected to the water inlet through a pipeline, a liquid storage pump is also provided outside the shell, a delivery pump is provided in the liquid storage pump, and the delivery pump is also connected to the water inlet through a pipeline.

[0014] Preferably, a rotating column is provided at the bottom of the upper shell, and a plurality of rotating blades are provided on a side of the rotating column close to the liquid outlet, and the plurality of rotating blades are arranged around the axis of the rotating column. A motor is also provided on the upper shell, and a driving shaft of the motor is connected to the rotating column;

[0015] When the device starts to operate, the lower surface of the upper shell contacts the upper surface of the lower shell, thereby forming a closed reaction space in the reaction chamber, and then the controller controls the delivery pump in the liquid storage chamber to start, and the delivery pump delivers the aniline in the infusion chamber to the water inlet through the pipeline, and then delivers it to the flow tank through the water inlet;

[0016] When aniline is transported to the flow trough, aniline flows from the edge of the lower shell to the center of the lower shell, and aniline flows through the advection trough, the first chute, the first jump trough, the second chute, the second jump trough and the third chute in sequence;

[0017] Since the surfaces of the first jump groove and the second jump groove are both provided with slopes, and the height of the slope close to the edge of the lower shell body is lower than the height of the slope close to the center of the lower shell body, when the aniline flows from the first chute to the first jump groove and the second chute to the second jump groove, the aniline will form a water flow layer on the first jump groove and the second jump groove, and when the aniline flows along the first chute and the second chute, the aniline impacts the water flow layer on the first jump groove and the second jump groove, thereby forming a water jump phenomenon at the intersection of the first chute and the first jump groove and at the intersection of the second chute and the second jump groove, thereby causing the aniline to generate a turbulent flow;

[0018] During the process of aniline flowing from the edge of the lower shell to the center of the lower shell along the flow groove, the controller controls the air pump in the gas storage tank to start, and the air pump extracts chlorine in the gas storage tank, and the chlorine is transported to the gas transmission ring through the pipeline. When the chlorine enters the gas transmission ring, the chlorine is transported to several gas transmission ports through the gas transmission ring. Since the aniline flows on the surface of the flow groove, a water flow layer is formed, and the density of chlorine is greater than that of air, when the chlorine is transported to the reaction chamber through the gas transmission port, the chlorine is immediately carried away by the aniline, so that the aniline mixed with the chlorine flows along the flow groove. When the aniline and the chlorine flow to the intersection of the first chute and the first jump groove and the intersection of the second chute and the second jump groove, due to the water jump generated here, the liquid is disturbed, and the aniline and the chlorine are tumbled and disturbed here, thereby realizing the mixing reaction of aniline and chlorine. Through the step-by-step water jump phenomenon, the aniline and the chlorine are fully mixed, thereby improving the quality of the preparation of m-chloroaniline;

[0019] During the process of aniline and chlorine gas flowing toward the side close to the center of the lower shell, the controller controls the motor on the upper shell to start, and the driving shaft of the motor drives the rotating column to rotate, and the rotating column drives the rotating blade to rotate when the rotating column rotates. When the rotating blade rotates, the aniline and chlorine gas between the third chute and the liquid outlet are mixed and stirred, so that the rotating blade and the hydraulic jump phenomenon cooperate with each other, further improving the effect of the mixed reaction of aniline and chlorine gas, and further improving the efficiency of the preparation of m-chloroaniline;

[0020] During the reaction of aniline and chlorine, the solenoid valve in the liquid outlet is always in a closed state, so that aniline and chlorine can only flow to the infusion port, and then flow to the infusion channel through the infusion port. When aniline and chlorine are delivered to the infusion channel, the controller controls the water pump in the infusion channel to start, and the water pump delivers aniline and chlorine to the water inlet through the pipeline again, so that aniline and chlorine flow from the horizontal flow trough to the third chute again, so that aniline and chlorine are further fully mixed, thereby improving the quality of the preparation of m-chloroaniline. After a period of mixing reaction, the controller controls the solenoid valve in the liquid outlet to open, and the substances in the reaction chamber are immediately discharged outward through the liquid outlet.

[0021] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0022] 1. In the process of aniline flowing from the edge of the lower shell to the center of the lower shell along the flow trough, the controller controls the air pump in the gas storage tank to start, and the air pump extracts chlorine in the gas storage tank, and the chlorine is transported to the gas transmission ring through the pipeline. When the chlorine enters the gas transmission ring, the chlorine is transported to several gas transmission ports through the gas transmission ring. Since the aniline flows on the surface of the flow trough, a water flow layer is formed, and the density of chlorine is greater than that of air, when the chlorine is transported to the reaction chamber through the gas transmission port, the chlorine is immediately carried away by the aniline, so that the aniline mixed with the chlorine flows along the flow trough. When the aniline and the chlorine flow to the intersection of the first chute and the first jump trough and the intersection of the second chute and the second jump trough, due to the water jump generated here, the liquid is disturbed, and the aniline and the chlorine are tumbled and disturbed here, thereby realizing the mixing reaction of aniline and chlorine. Through the step-by-step water jump phenomenon, the aniline and the chlorine are fully mixed, thereby improving the quality of the preparation of m-chloroaniline.

[0023] 2. When aniline and chlorine flow toward the side close to the center of the lower shell, the controller controls the motor on the upper shell to start, and the driving shaft of the motor drives the rotating column to rotate. When the rotating column rotates, the rotating blades are driven to rotate. When the rotating blades rotate, the aniline and chlorine between the third chute and the liquid outlet are mixed and stirred, so that the rotating blades and the water jump phenomenon cooperate with each other, further improving the effect of the mixed reaction of aniline and chlorine, and further improving the efficiency of the preparation of m-chloroaniline. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 is a stereogram of the present invention;

[0026] Figure 2 2 is a schematic diagram of the structure of the lower shell;

[0027] Figure 3 2 is a schematic diagram of the internal structure of the lower housing;

[0028] Figure 4 It is a schematic diagram of the structure of the gas delivery port and the gas delivery ring;

[0029] Figure 5 It is a schematic diagram of the structure of the infusion port and the infusion channel;

[0030] Figure 6 yes Figure 3 The enlarged view of point A in the middle;

[0031] In the figure: 1, housing; 11, upper housing; 12, lower housing; 13, liquid outlet;

[0032] 2. Mixing device; 21. Reaction chamber; 22. Flow trough; 23. Horizontal flow trough; 231. Water inlet; 24. First chute; 25. First jump trough; 26. Second chute; 27. Second jump trough; 28. Third chute; 29. ​​Gas delivery port; 30. Gas delivery ring; 31. Liquid delivery port; 32. Liquid delivery channel; 33. Rotating column; 34. Rotating blade. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 6 , the present invention provides a technical solution:

[0035] A synthesis reactor for preparing m-chloroaniline comprises: a shell 1, the shell 1 is composed of an upper shell 11 and a lower shell 12, the upper shell 11 is located above the lower shell 12, a support frame is arranged on the side of the upper shell 11 away from the lower shell 12, a hydraulic cylinder is arranged on the support frame, a push rod of the hydraulic cylinder is connected to the upper shell 11, a mixing device 2 is arranged in the shell 1, and the mixing device 2 comprises: a reaction chamber 21, and the reaction chamber 21 is arranged between the upper shell 11 and the lower shell 12.

[0036] As a specific embodiment of the present invention, a flow groove 22 is arranged in the reaction chamber 21, and a plurality of partition plates are arranged on the surface of the flow groove 22. The height of the flow groove 22 close to the edge of the lower shell 12 is higher than the height of the flow groove 22 close to the center of the lower shell 12. A liquid outlet 13 is arranged at the center of the lower shell 12.

[0037] As a specific embodiment of the present invention, the flow trough 22 is composed of a horizontal flow trough 23, a first inclined trough 24, a first jump trough 25, a second inclined trough 26, a second jump trough 27 and a third inclined trough 28. The horizontal flow trough 23 is located on the side of the flow trough 22 close to the edge of the lower shell 12, the side of the horizontal flow trough 23 away from the edge of the lower shell 12 is provided with a first inclined trough 24, and the side of the first inclined trough 24 away from the horizontal flow trough 23 is provided with a first jump trough 25.

[0038] As a specific embodiment of the present invention, a second inclined groove 26 is provided on the side of the first jump groove 25 away from the first inclined groove 24, a second jump groove 27 is provided on the side of the second jump groove 26 away from the first jump groove 25, and a third inclined groove 28 is provided on the side of the second jump groove 27 close to the center of the lower shell 12.

[0039] As a specific embodiment of the present invention, the surfaces of the first jump groove 25 and the second jump groove 27 are both provided with slopes, and the height of the slope close to the edge of the lower shell 12 is lower than the height of the slope close to the center of the lower shell 12.

[0040] As a specific embodiment of the present invention, the surfaces of the first chute 24, the second chute 26 and the third chute 28 are each provided with a plurality of gas delivery ports 29, and the plurality of gas delivery ports 29 are arranged around the axis of the flow groove 22, and a gas delivery ring 30 is provided on the side of the gas delivery port 29 away from the center of the lower shell 12, and the bottoms of the plurality of gas delivery rings 30 are connected by pipelines, and a gas storage tank is provided outside the shell 1, and an air pump is provided inside the gas storage tank, and the air pump is connected to the gas delivery ring 30 through a pipeline.

[0041] As a specific embodiment of the present invention, a solenoid valve is arranged in the liquid outlet 13, and a plurality of infusion ports 31 are arranged on the side of the liquid outlet 13 close to the reaction chamber 21, and the plurality of infusion ports 31 are arranged around the axis of the lower shell 12, and an infusion channel 32 is arranged on the side of the infusion port 31 away from the liquid outlet 13, and a water pump is arranged in the infusion channel 32, and a water inlet 231 is arranged on the side wall of the advection groove 23, and the water pump is connected to the water inlet 231 through a pipeline, and a liquid storage pump is also arranged outside the shell 1, and a delivery pump is arranged in the liquid storage pump, and the delivery pump is also connected to the water inlet 231 through a pipeline.

[0042] As a specific embodiment of the present invention, a rotating column 33 is provided at the bottom of the upper shell 11, and a plurality of rotating blades 34 are provided on the side of the rotating column 33 close to the liquid outlet 13. The plurality of rotating blades 34 are arranged around the axis of the rotating column 33. A motor is also provided on the upper shell 11, and the driving shaft of the motor is connected to the rotating column 33.

[0043] Working principle of the present invention:

[0044] When the equipment needs to be repaired, the controller controls the hydraulic cylinder on the support frame to start, and the push rod of the hydraulic cylinder drives the upper shell 11 to move, and the upper shell 11 moves to the side away from the lower shell 12, so that the upper shell 11 and the lower shell 12 are separated, and then the staff repairs the equipment through the gap between the upper shell 11 and the lower shell 12;

[0045] When the device starts to operate, the lower surface of the upper shell 11 contacts the upper surface of the lower shell 12, so that a closed reaction space is formed in the reaction chamber 21. Then the controller controls the delivery pump in the liquid storage chamber to start, and the delivery pump delivers the aniline in the infusion chamber to the water inlet 231 through the pipeline, and then delivers it to the flow tank 22 through the water inlet 231;

[0046] When aniline is transported to the flow trough 22, aniline flows from the edge of the lower shell 12 to the center of the lower shell 12, and aniline flows through the advection trough 23, the first chute 24, the first jump trough 25, the second chute 26, the second jump trough 27 and the third chute 28 in sequence;

[0047] Since the surfaces of the first jump groove 25 and the second jump groove 27 are both provided with slopes, and the height of the slope close to the edge of the lower shell 12 is lower than the height of the slope close to the center of the lower shell 12, when the aniline flows from the first chute 24 to the first jump groove 25 and the second chute 26 to the second jump groove 27, the aniline will form a water flow layer on the first jump groove 25 and the second jump groove 27, and when the aniline flows along the first chute 24 and the second chute 26, the aniline impacts the water flow layer on the first jump groove 25 and the second jump groove 27, so that the aniline forms a water jump phenomenon at the intersection of the first chute 24 and the first jump groove 25 and at the intersection of the second chute 26 and the second jump groove 27, thereby causing the aniline to generate a turbulent flow;

[0048] During the process of aniline flowing from the edge of the lower shell 12 to the center of the lower shell 12 along the flow groove 22, the controller controls the air pump in the gas storage tank to start, and the air pump extracts chlorine in the gas storage tank. The chlorine is transported to the gas delivery ring 30 through the pipeline. After the chlorine enters the gas delivery ring 30, the chlorine is transported to a plurality of gas delivery ports 29 through the gas delivery ring 30. Since the aniline flows on the surface of the flow groove 22, a water flow layer is formed, and the density of chlorine is greater than that of air, the chlorine is transported to the reaction chamber through the gas delivery port 29. At 21, the chlorine is immediately carried away by the aniline, so that the aniline mixed with the chlorine flows along the flow trough 22. When the aniline and the chlorine flow to the intersection of the first chute 24 and the first jump trough 25 and the intersection of the second chute 26 and the second jump trough 27, the liquid is disturbed due to the water jump generated here, and the aniline and the chlorine are tumbled and disturbed here, thereby realizing the mixing reaction of the aniline and the chlorine. Through the step-by-step water jump phenomenon, the aniline and the chlorine are fully mixed;

[0049] During the process of aniline and chlorine gas flowing toward the side close to the center of the lower shell 12, the controller controls the motor on the upper shell 11 to start, and the driving shaft of the motor drives the rotating column 33 to rotate, and the rotating blade 34 is driven to rotate when the rotating column 33 rotates. When the rotating blade 34 rotates, the aniline and chlorine gas between the third chute 28 and the liquid outlet 13 are mixed and stirred, so that the rotating blade 34 cooperates with the hydraulic jump phenomenon;

[0050] During the reaction of aniline and chlorine, the solenoid valve in the liquid outlet 13 is always in a closed state, so that aniline and chlorine can only flow to the infusion port 31, and then flow to the infusion channel 32 through the infusion port 31. When aniline and chlorine are delivered to the infusion channel 32, the controller controls the water pump in the infusion channel 32 to start, and the water pump delivers aniline and chlorine to the water inlet 231 through the pipeline again, so that aniline and chlorine flow from the horizontal flow trough 23 to the third chute 28 again, so that aniline and chlorine are further fully mixed, thereby improving the quality of the preparation of m-chloroaniline. After a period of mixing reaction, the controller controls the solenoid valve in the liquid outlet 13 to open, and the substances in the reaction chamber 21 are immediately discharged to the outside through the liquid outlet 13.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A synthesis reactor for preparing m-chloroaniline, characterized in that: include: A shell (1), the shell (1) comprising an upper shell (11) and a lower shell (12), the upper shell (11) being located above the lower shell (12), a support frame being provided on a side of the upper shell (11) away from the lower shell (12), a hydraulic cylinder being provided on the support frame, a push rod of the hydraulic cylinder being connected to the upper shell (11), a mixing device (2) being provided in the shell (1), the mixing device (2) comprising: a reaction chamber (21), the reaction chamber (21) being provided between the upper shell (11) and the lower shell (12); A flow groove (22) is arranged in the reaction chamber (21), and the flow groove (22) is composed of a flat flow groove (23), a first chute (24), a first jump groove (25), a second chute (26), a second jump groove (27) and a third chute (28). The flat flow groove (23) is located on a side of the flow groove (22) close to an edge of a lower shell (12), the first chute (24) is arranged on a side of the flat flow groove (23) away from an edge of the lower shell (12), and the first jump groove (25) is arranged on a side of the first chute (24) away from the flat flow groove (23).

2. A synthesis reactor for preparing m-chloroaniline according to claim 1, characterized in that: A plurality of partition plates are arranged on the surface of the flow groove (22); the height of the flow groove (22) close to the edge of the lower shell (12) is higher than the height of the flow groove (22) close to the center of the lower shell (12); and a liquid outlet (13) is arranged at the center of the lower shell (12).

3. A synthesis reactor for preparing m-chloroaniline according to claim 1, characterized in that: A second inclined groove (26) is arranged on a side of the first jumping groove (25) away from the first inclined groove (24), a second jumping groove (27) is arranged on a side of the second jumping groove (26) away from the first jumping groove (25), and a third inclined groove (28) is arranged on a side of the second jumping groove (27) close to the center of the lower shell (12).

4. A synthesis reactor for preparing m-chloroaniline according to claim 1, characterized in that: The surfaces of the first jump groove (25) and the second jump groove (27) are both provided with a slope, and the height of the slope close to the edge of the lower shell (12) is lower than the height of the slope close to the center of the lower shell (12).

5. The synthesis reactor for preparing m-chloroaniline according to claim 1, characterized in that: The surfaces of the first chute (24), the second chute (26) and the third chute (28) are all provided with a plurality of gas delivery ports (29), the plurality of gas delivery ports (29) being arranged around the axis of the flow groove (22), a gas delivery ring (30) being provided on one side of the gas delivery port (29) away from the center of the lower shell (12), the bottoms of the plurality of gas delivery rings (30) being connected via a pipeline, a gas storage tank being provided outside the shell (1), an air pump being provided inside the gas storage tank, and the air pump being connected to the gas delivery ring (30) via a pipeline.

6. A synthesis reactor for preparing m-chloroaniline according to claim 2, characterized in that: A solenoid valve is arranged in the liquid outlet (13); a plurality of liquid infusion ports (31) are arranged on a side of the liquid outlet (13) close to the reaction chamber (21); the plurality of liquid infusion ports (31) are arranged around the axis of the lower shell (12); a liquid infusion channel (32) is arranged on a side of the liquid infusion port (31) away from the liquid outlet (13); a water pump is arranged in the liquid infusion channel (32); a water inlet (231) is arranged on a side wall of the advection groove (23); the water pump is connected to the water inlet (231) through a pipeline; a liquid storage pump is also arranged outside the shell (1); a delivery pump is arranged in the liquid storage pump; the delivery pump is also connected to the water inlet (231) through a pipeline.

7. A synthesis reactor for preparing m-chloroaniline according to claim 2, characterized in that: A rotating column (33) is arranged at the bottom of the upper shell (11), and a plurality of rotating blades (34) are arranged on a side of the rotating column (33) close to the liquid outlet (13). The plurality of rotating blades (34) are arranged around the axis of the rotating column (33). A motor is also arranged on the upper shell (11), and a driving shaft of the motor is connected to the rotating column (33).

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