Device and method for recycling heat energy of high-nitrate water in primary brine

Abstract

The invention discloses a heat energy recycling device and method for high-nitrate water in primary brine. The heat energy recycling device comprises a conveying pipeline, and conveying flange plates are arranged at the two ends of the conveying pipeline; the outer wall of the conveying pipeline is sleeved with a recycling pipeline, the conveying pipeline and the recycling pipeline are coaxially arranged, the recycling pipeline is fixedly connected with the two sets of conveying flange plates, a recycling cavity is formed between the recycling pipeline and the conveying pipeline, a conveying cavity is formed in the conveying pipeline, a disturbance assembly is arranged in the conveying cavity, and the disturbance assembly is arranged in the conveying cavity. The disturbance assembly enables fluid in the conveying cavity to make full contact with the inner wall of the conveying pipeline, and heat is exchanged into the recycling cavity. The device has the beneficial effects that the disturbance assembly is arranged in the conveying pipeline, so that high-nitrate water with waste heat is in full contact with the inner wall of the conveying pipeline in the conveying process, heat exchange between fluid and the inner wall of the conveying pipeline is enhanced, heat is effectively exchanged to the inner cavity of the recovery pipeline, and the recovery efficiency of heat energy is improved.

Description

Technical Field

[0001] The invention relates to a device and method for recovering heat energy of high-nitrate water in primary brine. Background Art

[0002] In the production process of high-nitrate water in primary brine, the fluid will be heated to carry out normal production processes, and waste water will be generated after the production is completed. Since the waste water contains a large amount of waste heat, if this heat is not effectively recovered and utilized during transportation, it will cause energy waste and increase the burden on the environment. In view of this, the present invention proposes a device and method for recovering and utilizing heat energy of high-nitrate water in primary brine to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a device and method for recovering heat energy of high-nitrate water in primary brine to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A device for recovering heat energy of high-nitrate water in primary brine, comprising a delivery pipeline, with delivery flanges arranged at both ends of the delivery pipeline; The outer wall of the delivery pipeline is sleeved with a recovery pipeline, the delivery pipeline and the recovery pipeline are coaxially arranged, the recovery pipeline is fixedly connected to two sets of delivery flanges, a recovery cavity is arranged between the recovery pipeline and the delivery pipeline, a delivery cavity is arranged in the delivery pipeline, a disturbance component is arranged in the delivery cavity, the disturbance component allows the fluid in the delivery cavity to fully contact with the inner wall of the delivery pipeline, and exchanges heat to the recovery cavity.

[0005] As an improvement of the above technical solution, the disturbance component includes a disturbance rod, the disturbance rod is rotatably arranged in the conveying cavity, and the disturbance rod is coaxially arranged with the conveying pipeline; The conveying pipeline is provided with a driving assembly, and the driving assembly is transmission-connected with the disturbance rod so that the disturbance rod rotates in the conveying pipeline.

[0006] As an improvement of the above technical solution, the outer wall of the disturbance rod is provided with a disturbance lifting spiral blade, the disturbance lifting spiral blade is fixedly connected to the disturbance rod, and the disturbance lifting spiral blade is in contact with but not connected to the inner wall of the conveying pipe; Support sleeves are also sleeved on both ends of the disturbance rod, and the disturbance rod is rotatably arranged in the support sleeve. The outer wall of the support sleeve is provided with multiple groups of support rods, and the support rods are connected to the inner wall of the conveying pipeline.

[0007] As an improvement of the above technical solution, a plurality of disturbance plates are arranged on the disturbance lifting spiral blade, and the disturbance plates are arranged on the outer side wall of the disturbance lifting spiral blade, and the disturbance plates are in contact with the inner wall of the conveying pipe.

[0008] As an improvement of the above technical solution, the center position of the disturbance plate is connected to the disturbance lifting spiral blade, the disturbance plate is evenly arranged along the axis of the disturbance rod, the disturbance plate is provided with a contact surface, and the disturbance plate rotates with the axis of the disturbance rod, so that the contact surface contacts the inside of the conveying pipe in the rotating state; The lengths of the multiple groups of contact surfaces are the same as the pitches of the disturbance lifting spiral blades.

[0009] As an improvement of the above technical solution, a recovery and lifting spiral blade is provided in the recovery chamber, and the recovery and lifting spiral blade is connected to the outer wall of the conveying pipe and the inner wall of the recovery pipe; Two groups of connecting pipes are symmetrically arranged on the outer wall of the recovery pipe, and the connecting pipes are connected to the recovery cavity.

[0010] As an improvement of the above technical solution, the driving assembly includes a driving pipeline, and the inner diameter of the driving pipeline is the same as the inner diameter of the conveying pipeline; A driving installation platform is arranged on the driving pipeline, a driving servo motor is arranged on the driving installation platform, a driving shaft is arranged on the driving servo motor, and the driving shaft is drivingly connected with the disturbance rod.

[0011] As an improvement of the above technical solution, driving flanges are provided at both ends of the driving pipeline, and the driving flanges are adapted to the conveying flanges; The driving shaft is provided with a driving keyway, the disturbance rod is provided with a disturbance keyway, and a universal coupling is arranged between the driving keyway and the disturbance keyway.

[0012] A method for using a device for recovering heat energy of high-nitrate water in primary brine, comprising the following steps: S10, drive connection: Align the drive flange with the delivery flange and connect them with bolts, and connect the universal coupling between the drive shaft and the disturbance rod; S20, Pipeline connection: Determine the number of conveying pipes according to the actual conveying length, and arrange multiple groups of conveying pipes in sequence so that two groups of conveying flanges are aligned, and connect the two groups of aligned conveying flanges by bolts; S30, disturbance connection: When adjacent delivery pipelines are connected in S20, a universal coupling is installed between two adjacent groups of disturbance rods, so that the two adjacent groups of disturbance rods are transmission-connected; S40, recovery chamber connection; When adjacent delivery pipelines are connected in S20, elbows are installed between adjacent connecting pipelines so that two sets of recovery chambers on two sets of delivery pipelines are connected; S50, drive and convey: The high-nitrate water with residual heat is introduced into the driving pipeline and the conveying pipeline, and the high-nitrate water is transported through the conveying pipeline. At the same time, the driving component is turned on, so that the driving shaft rotates to drive the disturbance rod to rotate to perform the disturbance and conveying process.

[0013] As an improvement of the above technical solution, in S10, after the universal coupling is connected between the driving shaft and the disturbance rod, the driving servo motor is turned on for testing. If it cannot drive the disturbance rod to rotate normally, the universal coupling is reinstalled until the driving shaft can drive the disturbance rod to rotate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: By setting a disturbance component in the delivery pipeline, the high-nitrogen water with residual heat is fully in contact with the inner wall of the delivery pipeline during the delivery process, thereby enhancing the heat exchange between the fluid and the inner wall of the delivery pipeline, thereby effectively exchanging heat to the inner cavity of the recovery pipeline and improving the recovery efficiency of heat energy; The delivery pipeline and the recovery pipeline are coaxially arranged, the structure is compact, and the space occupation is reduced. At the same time, the design of fixed connection with the delivery flange is convenient for installation and maintenance. The temperature of the fluid in the delivery pipeline can be indirectly measured by measuring the temperature of the recovery pipeline, which can realize non-contact temperature measurement and improve the real-time and accuracy of the measurement. By injecting a heat exchanging fluid into the recovery pipe, the temperature of the fluid in the delivery pipe can be easily regulated. For example, if the temperature of the fluid in the delivery pipe is too high, it can be cooled by the fluid in the recovery pipe, and vice versa. By introducing fluid into the recovery pipe, when the fluid in the delivery pipe needs to maintain a specific temperature, the fluid in the recovery pipe can be insulated, that is, the fluid in the recovery pipe is heated to a suitable temperature, and the temperature of the fluid in the delivery pipe is maintained through heat transfer, which is convenient for the later treatment of high nitrate water. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of discharging materials of multiple groups of conveying pipelines of the present invention; Figure 3 It is a side view of the recovery pipeline of the present invention; Figure 4 For the present invention Figure 3 Sectional view of AA in the middle; Figure 5 It is a schematic diagram of the position of the disturbance rod of the present invention; Figure 6 It is a schematic diagram of the structure of the driving assembly of the present invention; Figure 7 It is a structural schematic diagram of the disturbance rod of the present invention; Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure at B in the middle; Fig. 9 It is a side view of the disturbance rod of the present invention.

[0016] In the figure: 10, recovery pipe; 11, connecting pipe; 12, recovery lifting spiral blade; 13, recovery chamber; 20, drive assembly; 21, drive servo motor; 22, mounting table; 23, drive shaft; 24, drive keyway; 25, drive pipe; 26, drive flange; 30, conveying pipe; 31, conveying chamber; 32, conveying flange; 40, disturbance rod; 41, disturbance lifting spiral blade; 42, disturbance plate; 421, contact surface; 43, support sleeve; 44, support rod; 45, disturbance keyway. DETAILED DESCRIPTION

[0017] 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.

[0018] Example: like Figure 1-9 As shown, this embodiment proposes a device for recovering heat energy of high-nitrate water in primary brine, comprising a delivery pipeline 30, and delivery flanges 32 are provided at both ends of the delivery pipeline 30; The outer wall of the delivery pipe 30 is sleeved with a recovery pipe 10, and the delivery pipe 30 and the recovery pipe 10 are coaxially arranged. The recovery pipe 10 is fixedly connected to two sets of delivery flanges 32. A recovery cavity 13 is arranged between the recovery pipe 10 and the delivery pipe 30. A delivery cavity 31 is arranged in the delivery pipe 30. A disturbance component is arranged in the delivery cavity 31. The disturbance component allows the fluid in the delivery cavity 31 to fully contact the inner wall of the delivery pipe 30, and exchanges heat to the recovery cavity 13.

[0019] In this embodiment, when transporting high nitrate water with residual heat, the delivery pipeline 30 is set up on the delivery route, so that the high nitrate water with residual heat moves in the delivery pipeline 30, and then the disturbance component is activated, so that the high nitrate water with residual heat is fully in contact with the inner wall of the delivery pipeline 30, so as to exchange heat to the inner cavity of the recovery pipeline 10, and then the fluid to be exchanged is introduced into the recovery pipeline 10 for heat exchange; By arranging a disturbance component in the delivery pipe 30, the high-nitrogen water with residual heat is fully in contact with the inner wall of the delivery pipe 30 during the delivery process, thereby enhancing the heat exchange between the fluid and the inner wall of the delivery pipe 30, thereby effectively exchanging heat to the inner cavity of the recovery pipe, thereby improving the recovery efficiency of heat energy; The delivery pipeline 30 and the recovery pipeline 10 are coaxially arranged, and the structure is compact, which reduces the space occupation. At the same time, the design of fixed connection with the delivery flange 32 is convenient for installation and maintenance. Moreover, the temperature of the fluid in the delivery pipeline 30 can be indirectly measured by measuring the temperature of the recovery pipeline 10, which can realize non-contact temperature measurement and improve the real-time performance and accuracy of the measurement. By injecting a heat exchanging fluid into the recovery pipe 10, the temperature of the fluid in the delivery pipe 30 can be easily regulated. For example, if the temperature of the fluid in the delivery pipe 30 is too high, it can be cooled by the fluid in the recovery pipe 10, and vice versa. By introducing fluid into the recovery pipe 10, when the fluid in the delivery pipe 30 needs to maintain a specific temperature, the fluid in the recovery pipe 10 can be insulated, that is, the fluid in the recovery pipe 10 is heated to a suitable temperature, and the temperature of the fluid in the delivery pipe 30 is maintained through heat transfer, which is convenient for the later treatment of high nitrate water.

[0020] Specifically, the disturbance assembly includes a disturbance rod 40, the disturbance rod 40 is rotatably disposed in the delivery cavity 31, and the disturbance rod 40 is coaxially disposed with the delivery pipeline 30; The conveying pipeline 30 is provided with a driving assembly 20 , and the driving assembly 20 is in transmission connection with the disturbance rod 40 , so that the disturbance rod 40 rotates in the conveying pipeline 30 .

[0021] In this embodiment, the driving assembly 20 can conveniently drive the disturbance rod 40 to rotate, so as to facilitate disturbance processing in the conveying pipeline 30 .

[0022] Specifically, the outer wall of the disturbance rod 40 is provided with a disturbance lifting spiral blade 41, the disturbance lifting spiral blade 41 is fixedly connected to the disturbance rod 40, and the disturbance lifting spiral blade 41 is in contact with but not connected to the inner wall of the conveying pipe 30; Support sleeves 43 are also sleeved on both ends of the disturbance rod 40 . The disturbance rod 40 is rotatably arranged in the support sleeve 43 . The outer wall of the support sleeve 43 is provided with multiple groups of support rods 44 . The support rods 44 are connected to the inner wall of the conveying pipe 30 .

[0023] Specifically, a plurality of disturbance plates 42 are disposed on the disturbance lifting spiral blade 41 . The disturbance plates 42 are disposed on the outer side wall of the disturbance lifting spiral blade 41 . The disturbance plates 42 are in contact with the inner wall of the conveying pipe 30 .

[0024] In this embodiment, during the rotation of the disturbance rod 40, the disturbance lifting spiral blade 41 rotates accordingly, and the fluid in the delivery pipe 30 is disturbed by the disturbance lifting spiral blade 41, so that the fluid is fully in contact with the inner wall of the delivery pipe 30 for heat exchange, and at the same time, the disturbance lifting spiral blade 41 can push the fluid to move, so as to facilitate the transportation of the fluid in the delivery pipe 30; During the rotation of the disturbance lifting spiral blade 41, the disturbance plate 42 rotates with the axis of the disturbance rod 40, and the fluid in the delivery pipe 30 is disturbed by the disturbance plate 42, so that the fluid can fully contact the inner wall of the delivery pipe 30 for heat exchange. At the same time, the residual impurities on the surface of the delivery pipe 30 can be scraped off to avoid affecting the normal heat exchange process.

[0025] Specifically, the center position of the disturbance plate 42 is connected to the disturbance lifting spiral blade 41, the disturbance plate 42 is evenly arranged along the axis of the disturbance rod 40, and the disturbance plate 42 is provided with a contact surface 421. The disturbance plate 42 rotates with the axis of the disturbance rod 40, so that the contact surface 421 contacts the inside of the conveying pipe 30 in the rotating state; The lengths of the multiple groups of contact surfaces 421 are the same as the pitches of the disturbance lifting spiral blades 41 .

[0026] Specifically, the recovery chamber 13 is provided with a recovery and lifting spiral blade 12, and the recovery and lifting spiral blade 12 is connected to the outer wall of the conveying pipe 30 and the inner wall of the recovery pipe 10; Two groups of connecting pipes 11 are symmetrically arranged on the outer wall of the recovery pipe 10 , and the connecting pipes 11 are connected to the recovery chamber 13 .

[0027] In this embodiment, the connecting pipe 11 can facilitate the introduction of the fluid that needs heat exchange into the recovery chamber 13. Of course, the recovery and lifting spiral blades 12 can make the fluid that needs heat exchange fully contact with the outer wall of the delivery pipe 30 to improve the efficiency of heat exchange. At the same time, since the recovery and lifting spiral blades 12 are fixedly connected between the outer wall of the delivery pipe 30 and the inner wall of the recovery pipe 10, the stability of the connection between the delivery pipe 30 and the recovery pipe 10 can be improved. Of course, during the docking process of the delivery pipeline 30, a bend pipe can be installed between two adjacent sets of connecting pipes 11, so that the inner cavities of the two sets of recovery cavities 13 on the two sets of delivery pipelines 30 are connected, which is convenient for heat exchange processing. Figure 2 .

[0028] Specifically, the driving assembly 20 includes a driving pipe 25, and the inner diameter of the driving pipe 25 is the same as the inner diameter of the delivery pipe 30; A driving mounting platform 22 is disposed on the driving pipeline 25 , a driving servo motor 21 is disposed on the driving mounting platform 22 , a driving shaft 23 is disposed on the driving servo motor 21 , and the driving shaft 23 is drivingly connected to the disturbance rod 40 .

[0029] Specifically, driving flanges 26 are provided at both ends of the driving pipe 25, and the driving flanges 26 are adapted to the conveying flanges 32; The driving shaft 23 is provided with a driving keyway 24 , the disturbance rod 40 is provided with a disturbance keyway 45 , and a universal coupling is provided between the driving keyway 24 and the disturbance keyway 45 .

[0030] In this embodiment, when the disturbance rod 40 needs to rotate, the driving servo motor 21 is turned on to drive the driving shaft 23 to rotate, and the disturbance rod 40 is driven to rotate through the universal joint.

[0031] A method for using a device for recovering heat energy of high-nitrate water in primary brine, comprising the following steps: S10, drive connection: Align the driving flange 26 with the conveying flange 32 and connect them by bolts, and connect a universal coupling between the driving shaft 23 and the disturbance rod 40; S20, Pipeline connection: Determine the number of delivery pipes 30 according to the actual delivery length, and arrange multiple groups of delivery pipes 30 in sequence so that two groups of delivery flanges 32 are aligned, and connect the two groups of aligned delivery flanges 32 by bolts; S30, disturbance connection: When the adjacent delivery pipes 30 are connected in S20, a universal coupling is installed between two adjacent groups of disturbance rods 40, so that the two adjacent groups of disturbance rods 40 are transmission-connected; S40, recovery chamber connection; When adjacent delivery pipes 30 are connected in S20, elbows are installed between adjacent connecting pipes 11 so that two sets of recovery chambers 13 on two sets of delivery pipes 30 are connected; S50, drive and convey: The high nitrate water with residual heat is introduced into the driving pipe 25 and the conveying pipe 30, and the high nitrate water is transported through the conveying pipe 30. At the same time, the driving component 20 is turned on, so that the driving shaft 23 rotates to drive the disturbance rod 40 to rotate to perform the disturbance and conveying process.

[0032] Specifically, in S10, after the universal coupling is connected between the driving shaft 23 and the disturbance rod 40, the driving servo motor 21 is turned on for testing. If it cannot drive the disturbance rod 40 to rotate normally, the universal coupling is reinstalled until the driving shaft 23 rotates to drive the disturbance rod 40 to rotate.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for recovering heat energy of high-nitrate water in primary brine, characterized by: It comprises a delivery pipeline (30), with delivery flanges (32) being provided at both ends of the delivery pipeline (30); The outer wall of the delivery pipe (30) is provided with a recovery pipe (10); the delivery pipe (30) and the recovery pipe (10) are coaxially arranged; the recovery pipe (10) is fixedly connected to two sets of delivery flanges (32); a recovery chamber (13) is arranged between the recovery pipe (10) and the delivery pipe (30); a delivery chamber (31) is arranged in the delivery pipe (30); a disturbance component is arranged in the delivery chamber (31); the disturbance component enables the fluid in the delivery chamber (31) to fully contact the inner wall of the delivery pipe (30) so as to exchange heat to the recovery chamber (13).

2. The device for recovering heat energy of high nitrate water in primary brine according to claim 1, characterized in that: The disturbance component comprises a disturbance rod (40), the disturbance rod (40) is rotatably arranged in the conveying cavity (31), and the disturbance rod (40) is coaxially arranged with the conveying pipeline (30); A driving assembly (20) is provided on the conveying pipeline (30), and the driving assembly (20) is in transmission connection with the disturbance rod (40), so that the disturbance rod (40) rotates in the conveying pipeline (30).

3. The device for recovering heat energy of high nitrate water in primary brine according to claim 2, characterized in that: The outer wall of the disturbance rod (40) is provided with a disturbance lifting spiral blade (41), the disturbance lifting spiral blade (41) is fixedly connected to the disturbance rod (40), and the disturbance lifting spiral blade (41) is in contact with but not connected to the inner wall of the conveying pipe (30); Support sleeves (43) are also sleeved at both ends of the disturbance rod (40), the disturbance rod (40) is rotatably arranged in the support sleeve (43), and the outer wall of the support sleeve (43) is provided with multiple groups of support rods (44), and the support rods (44) are connected to the inner wall of the conveying pipe (30).

4. The device for recovering heat energy of high-nitrate water in primary brine according to claim 3, characterized in that: The disturbance lifting spiral blade (41) is provided with a plurality of groups of disturbance plates (42), the disturbance plates (42) being arranged on the outer side wall of the disturbance lifting spiral blade (41), and the disturbance plates (42) being in contact with the inner wall of the conveying pipe (30).

5. The device for recovering heat energy of high nitrate water in primary brine according to claim 4, characterized in that: The center position of the disturbance plate (42) is connected to the disturbance lifting spiral blade (41), the disturbance plate (42) is evenly arranged along the axis of the disturbance rod (40), the disturbance plate (42) is provided with a contact surface (421), and the disturbance plate (42) rotates about the axis of the disturbance rod (40), so that the contact surface (421) contacts the inside of the conveying pipe (30) in a rotating state; The lengths of the multiple groups of contact surfaces (421) are the same as the pitch of the disturbance lifting spiral blades (41).

6. The device for recovering heat energy of high-nitrate water in primary brine according to claim 1, characterized in that: The recovery chamber (13) is provided with a recovery and lifting spiral blade (12), and the recovery and lifting spiral blade (12) is connected to the outer wall of the conveying pipeline (30) and the inner wall of the recovery pipeline (10); Two groups of connecting pipes (11) are symmetrically arranged on the outer wall of the recovery pipe (10), and the connecting pipes (11) are connected to the recovery chamber (13).

7. The device for recovering heat energy of high-nitrate water in primary brine according to claim 2, characterized in that: The driving assembly (20) comprises a driving pipeline (25), wherein the inner diameter of the driving pipeline (25) is the same as the inner diameter of the conveying pipeline (30); A drive mounting platform (22) is arranged on the drive pipe (25), a drive servo motor (21) is arranged on the drive mounting platform (22), a drive rotating shaft (23) is arranged on the drive servo motor (21), and the drive rotating shaft (23) is drivingly connected to the disturbance rod (40).

8. The device for recovering heat energy of high-nitrate water in primary brine according to claim 7, characterized in that: Both ends of the driving pipeline (25) are provided with driving flanges (26), and the driving flanges (26) are adapted to the conveying flanges (32); The driving shaft (23) is provided with a driving keyway (24), the disturbance rod (40) is provided with a disturbance keyway (45), and a universal coupling is provided between the driving keyway (24) and the disturbance keyway (45).

9. A method for using a device for recovering heat energy of high nitrate water in primary brine according to any one of claims 1 to 8, characterized in that: The following steps are involved: S10, drive connection: Align the drive flange (26) and the delivery flange (32) and connect them by bolts, and connect a universal coupling between the drive shaft (23) and the disturbance rod (40); S20, Pipeline connection: Determining the number of conveying pipes (30) according to the actual conveying length, and sequentially arranging the plurality of conveying pipes (30) so that the two sets of conveying flanges (32) are aligned, and connecting the two sets of aligned conveying flanges (32) by means of bolts; S30, disturbance connection: When adjacent delivery pipes (30) are connected in S20, a universal coupling is installed between two adjacent sets of disturbance rods (40) so that the two adjacent sets of disturbance rods (40) are transmission-connected; S40, recovery chamber connection; When adjacent delivery pipes (30) are connected in S20, a bend pipe is installed between adjacent connecting pipes (11) so that two sets of recovery chambers (13) on the two sets of delivery pipes (30) are connected; S50, drive and convey: The high-nitrogen nitrate water with residual heat is introduced into the driving pipe (25) and the conveying pipe (30), and the high-nitrogen nitrate water is transported through the conveying pipe (30). At the same time, the driving component (20) is turned on, so that the driving shaft (23) rotates to drive the disturbance rod (40) to rotate to perform the disturbance and conveying process.

10. The method for using the device for recovering heat energy of high nitrate water in primary brine according to claim 9, characterized in that: In S10, after the universal coupling is connected between the driving shaft (23) and the disturbance rod (40), the driving servo motor (21) is turned on for testing. If the disturbance rod (40) cannot be driven to rotate normally, the universal coupling is reinstalled until the driving shaft (23) can rotate to drive the disturbance rod (40) to rotate.

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