A pressure-stabilized feeding system for chemical production

Abstract

This invention discloses a pressure-stabilized feeding system for chemical production, comprising a material storage tank, a reactor, a feed pump, a pressure-stabilizing mechanism, a flow-diverting mechanism, and a buffer tank. A first conduit connects the feed pump inlet to the material storage tank. The pressure-stabilizing mechanism is installed between the feed pump outlet and the reactor. The pressure-stabilizing mechanism includes a housing with a feed conduit and a pressure-stabilized discharge conduit. The feed conduit is connected to the feed pump, and the pressure-stabilized discharge conduit is connected to the reactor. The housing also has a residual material return conduit connected to the flow-diverting mechanism, which in turn connects to the buffer tank and the material storage tank. By adding a pressure-stabilizing mechanism, the pressure in the pressure-stabilized discharge conduit fluctuates within a small range, improving the control accuracy of the flow meter and preventing excessive feed pressure from causing impacts that could affect the composition of the material inside the reactor.

Description

Technical Field

[0001] This invention relates to the field of chemical production feeding technology, and in particular to a pressure-stabilized feeding system for chemical production. Background Technology

[0002] For existing distillation columns, reactors, and other devices designed with pressure variations, flow control during the feeding process is generally achieved using ordinary centrifugal pumps and regulating valves. This approach has the following main drawbacks:

[0003] 1. The feeding system is under negative or positive pressure. When the feed flow rate is small, it is impossible to accurately control the flow rate. Therefore, it is impossible to accurately control the ratio of reactant components, making it difficult to meet the process requirements.

[0004] 2. If the feed pressure is too high during feeding, the rapidly flowing material will have a significant impact on the existing material inside the reactor, affecting the components inside the reaction vessel and hindering the reaction.

[0005] Therefore, a pressure stabilizing mechanism needs to be added at the feed inlet to keep the feed pressure within a stable range. Summary of the Invention

[0006] To address the problems mentioned in the background section, the present invention provides a pressure-stabilized feeding system for chemical production.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A pressure-stabilizing feeding system for chemical production includes a material storage tank, a reactor, a feed pump, a pressure stabilizing mechanism, a diversion mechanism, and a buffer tank. A first conduit is connected between the feed pump inlet and the material storage tank, and the pressure stabilizing mechanism is installed between the feed pump outlet and the reactor.

[0009] The pressure stabilizing mechanism includes a housing, on which a feed pipe and a pressure stabilizing discharge pipe are provided. The feed pipe is connected to a feed pump, and the pressure stabilizing discharge pipe is connected to a reactor. The housing is also provided with a residual material return pipe, which is connected to a diversion mechanism. The diversion mechanism is connected to a buffer tank and a material storage tank respectively.

[0010] A reflux pump is installed between the buffer tank and the material storage tank.

[0011] Preferably, a flow meter is installed on the pressure-stabilized discharge conduit, a reflux conduit is provided on the material storage tank, the inlet of the reflux pump is connected to the buffer tank, and the outlet of the reflux pump is connected to the pressure-stabilized discharge conduit through a second conduit.

[0012] Preferably, a diverter cylinder is fixed on the inner wall of the top of the outer shell. A pressure-reducing return port is provided on the side of the diverter cylinder near the residual material return conduit. Multiple pressure-reducing return ports are provided and are evenly distributed from top to bottom. A pressure-stabilizing discharge port is provided on the side of the diverter cylinder near the pressure-stabilizing discharge conduit. A first lifting piston is slidably installed on the diverter cylinder. A return baffle and a discharge baffle are fixed on both sides of the top of the first lifting piston, respectively. An elastic mechanism is provided between the bottom of the first lifting piston and the outer shell.

[0013] Preferably, the elastic mechanism includes a disc, the bottom end of which is provided with a lifting adjustment mechanism, the top end of which is fixed with a guide sleeve, the top end of which is movably mounted with a lifting rod, the top end of which is fixed with a movable rod, the top end of which extends movably into the interior of the diverter and is fixed with the first lifting piston.

[0014] Preferably, a slider is slidably mounted on the top of the disc via a guide rail, a connecting rod is provided between the top of the lifting rod and the slider, one end of the connecting rod is hinged to the lifting rod, and the other end of the connecting rod is hinged to the slider, and a first elastic telescopic rod is fixed on the disc, with the movable end of the first elastic telescopic rod fixedly connected to the slider.

[0015] Preferably, the lifting adjustment mechanism includes a threaded rod, the top end of which extends into the housing and is rotatably connected to the bottom end of the disc, and a guide rod is fixed to the bottom end of the disc, the bottom end of which extends movably to the outside of the housing.

[0016] Preferably, the bottom end of the threaded rod extends to the outside of the housing and is fixed with a rotating handle, and a positioning nut is threadedly installed on the outside of the threaded rod between the rotating handle and the housing.

[0017] Preferably, pressure sensors are installed on both the feed conduit and the pressure-stabilized discharge conduit.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. By adding a pressure stabilizing mechanism, the pressure of the pressure-stabilizing discharge pipe can fluctuate within a small range, which can improve the control accuracy of the flow meter and prevent excessive feed pressure from causing impact, thereby affecting the composition of the material inside the reactor.

[0020] 2. The elastic mechanism provides an upward thrust to the first lifting piston, causing the return baffle and discharge baffle to block the pressure-reducing return port and the pressure-stabilizing discharge port. Material enters the distribution cylinder through the feed pipe. The pressure inside the distribution cylinder gradually increases with the amount of material, gradually overcoming the elastic force of the elastic mechanism and pushing the first lifting piston downwards. When the pressure reaches a certain value, the discharge baffle first shifts away from the pressure-stabilizing discharge port, allowing the material to exit. When the pressure continues to increase, the first lifting piston is pushed downwards, causing the return baffle to shift sequentially away from each pressure-reducing return port, allowing the material to... The material can flow back to the buffer tank and material storage tank through the pressure reducing reflux port. Through the diversion effect, the pressure inside the diversion cylinder can be reduced. As the reflux baffle moves downward, multiple pressure reducing reflux ports will be opened in sequence, so that the pressure inside the diversion cylinder can be reduced quickly, and the pressure of the material discharged from the pressure stabilizing outlet can be reduced. As the pressure inside the diversion cylinder decreases, the elastic mechanism will push the first lifting piston to move upward, thereby blocking each pressure reducing reflux port in sequence, reducing the backflow of material, and thus achieving the purpose of automatic dynamic adjustment, so that the discharge pressure inside the pressure stabilizing discharge pipe fluctuates within a small range.

[0021] 3. Through the design of the diversion mechanism, when the pressure inside the return inlet pipe is low, the pressure on the second lifting piston is low, and the compression of the second elastic telescopic rod is small. At this time, the second lifting piston is in a lower position, and the position where the arc-shaped baffle stops blocks the direct return pipe, and the return collection pipe is opened. At this time, the return material enters the buffer tank for collection. When the pressure inside the return inlet pipe is high, the second lifting piston is pushed upward, which pushes the lifting bracket to move upward, thereby driving the transmission bar to move upward. Then, through the meshing of the transmission bar and the transmission wheel, the drive shaft rotates, thereby changing the arc-shaped baffle, so that the direct return pipe opens and the return collection pipe closes. At this time, the return material directly flows back to the material storage tank through the return conduit, which can effectively utilize the pressure of the return material. When the pressure is sufficient, it flows directly back to the material storage tank, and when the pressure is insufficient, it is introduced into the buffer tank, which is more energy-saving and environmentally friendly. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a flowchart of the present invention;

[0024] Figure 2 for Figure 1Enlarged detail image of position A;

[0025] Figure 3 This is a perspective view of the voltage stabilizing mechanism of the present invention;

[0026] Figure 4 This is a first-view cross-sectional view of the housing of the voltage stabilizing mechanism of the present invention;

[0027] Figure 5 This is a second-view cross-sectional view of the housing of the voltage stabilizing mechanism of the present invention;

[0028] Figure 6 This is a third-view sectional view of the housing of the voltage stabilizing mechanism of the present invention;

[0029] Figure 7 This is a top view of the disk of the present invention;

[0030] Figure 8 This is a magnified detail view of the diversion container of the present invention from a first perspective;

[0031] Figure 9 This is a magnified detail view of the diversion container of the present invention from a second perspective;

[0032] In the diagram: 1. Material storage tank; 2. Reactor; 3. Feed pump; 4. Pressure stabilizing mechanism; 401. Outer shell; 4011. Feed conduit; 4012. Pressure stabilizing discharge conduit; 4013. Flow meter; 4014. Residual material return conduit; 5. Buffer tank; 6. Return pump; 601. Second conduit; 7. Diversion container; 701. Return inlet pipe; 702. Direct return pipe; 703. Return collection pipe; 704. Drive shaft; 7041. Transmission wheel; 705. Arc-shaped baffle; 706. Transmission bar; 707. Lifting bracket; 8. Live... Plug tube, 801 second lifting piston, 802 second elastic telescopic rod, 803 connecting rod, 9 threaded rod, 901 rotating handle, 902 positioning nut, 903 disc, 9031 guide rod, 904 guide sleeve, 9041 lifting rod, 9042 movable rod, 9043 connecting rod, 10 diverter, 101 first lifting piston, 1011 discharge baffle, 1012 return baffle, 11 guide rail, 1101 slider, 1102 first elastic telescopic rod, 12 first conduit. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1

[0035] Reference Figure 1-7 A pressure-stabilizing feeding system for chemical production includes a material storage tank 1, a reactor 2, a feed pump 3, a pressure stabilizing mechanism 4, a diversion mechanism, and a buffer tank 5. A first conduit 12 is connected between the feed inlet of the feed pump 3 and the material storage tank 1, and the pressure stabilizing mechanism 4 is installed between the discharge outlet of the feed pump 3 and the reactor 2.

[0036] The pressure stabilizing mechanism 4 includes a housing 401, on which a feed conduit 4011 and a pressure-stabilizing discharge conduit 4012 are provided. The feed conduit 4011 is connected to the feed pump 3, and the pressure-stabilizing discharge conduit 4012 is connected to the reactor 2. The housing 401 is also provided with a residual material return conduit 4014, which is connected to a diversion mechanism and is connected to the buffer tank 5 and the material storage tank 1 respectively through the diversion mechanism.

[0037] When the feed flow rate is changed by adjusting the power of the feed pump 3 and adjusting the feed valve, the pressure of the feed pipe 4011 will change. The pressure is stabilized by the pressure stabilizing mechanism 4 to maintain the stability of the pressure of the pressure-stabilized discharge pipe 4012.

[0038] The pressure of the pressure-stabilized discharge conduit 4012 is reduced by guiding a portion of the feed material back to the buffer tank 5 via the feed material return conduit 4014, or by guiding it directly back to the material storage tank 1.

[0039] A reflux pump 6 is installed between the buffer tank 5 and the material storage tank 1. After the material inside the buffer tank 5 is full, it is pumped into the material storage tank 1 through the reflux pump 6.

[0040] Among them, a flow meter 4013 is installed on the pressure-stabilized discharge conduit 4012, a return conduit 102 is provided on the material storage tank 1, the inlet of the return pump 6 is connected to the buffer tank 5, and the outlet of the return pump 6 is connected to the pressure-stabilized discharge conduit 4012 through the second conduit 601.

[0041] The pressure of the pressure-stabilized discharge conduit 4012 fluctuates within a small range, which can improve the control accuracy of the flow meter 4013 and prevent excessive feed pressure from causing impact, thereby affecting the composition of the material inside the reactor 2.

[0042] Example 2

[0043] Reference Figure 1-7The difference between this embodiment and embodiment 1 is that a diversion cylinder 10 is fixed on the inner wall of the top of the outer shell 401. A pressure reducing return port 1013 is provided on the side of the diversion cylinder 10 near the residual material return conduit 4014. Multiple pressure reducing return ports 1013 are provided and are distributed at equal intervals from top to bottom. A pressure stabilizing outlet is opened on the side of the diversion cylinder 10 near the pressure stabilizing discharge conduit 4012. A first lifting piston 101 is slidably installed on the diversion cylinder 10. A return baffle 1012 and a discharge baffle 1011 are fixed on both sides of the top of the first lifting piston 101 respectively. An elastic mechanism is provided between the bottom end of the first lifting piston 101 and the outer shell 401.

[0044] The elastic mechanism provides an upward thrust to the first lifting piston 101, causing the return baffle 1012 and the discharge baffle 1011 to block the pressure-reducing return port 1013 and the pressure-stabilizing outlet. Material enters the distribution cylinder 10 through the feed pipe 4011. The pressure inside the distribution cylinder 10 gradually increases with the amount of material, gradually overcoming the elastic force of the elastic mechanism and pushing the first lifting piston 101 downwards. When the pressure reaches a certain value, the discharge baffle 1011 first shifts away from the pressure-stabilizing outlet, allowing the material to exit from the outlet. As the pressure continues to increase, the first lifting piston 101 is pushed downwards, causing the return baffle 1012 to shift sequentially away from each pressure-reducing return port 1013, thus... The material can flow back to the buffer tank 5 and the material storage tank 1 through the pressure reducing return port 1013. Through the diversion effect, the pressure inside the diversion cylinder 10 can be reduced. As the return baffle 1012 moves downward, multiple pressure reducing return ports 1013 will be opened in sequence, so that the pressure inside the diversion cylinder 10 can be reduced quickly, and the pressure of the material discharged from the pressure stabilizing outlet can be reduced. As the pressure inside the diversion cylinder 10 decreases, the elastic mechanism will push the first lifting piston 101 to move upward, thereby blocking each pressure reducing return port 1013 in sequence, reducing the backflow of material, thereby achieving the purpose of automatic dynamic adjustment, so that the discharge pressure inside the pressure stabilizing discharge pipe 4012 is maintained within a small range.

[0045] Example 3

[0046] Reference Figure 4-7 The difference between this embodiment and embodiment 2 is that the elastic mechanism includes a disc 903, the bottom end of the disc 903 is provided with a lifting adjustment mechanism, the top end of the disc 903 is fixed with a guide sleeve 904, the top end of the guide sleeve 904 is movably mounted with a lifting rod 9041, the top end of the lifting rod 9041 is fixed with a movable rod 9042, and the top end of the movable rod 9042 extends movably into the interior of the diverter cylinder 10 and is fixed with the first lifting piston 101.

[0047] Among them, the top of the disc 903 is slidably mounted with a slider 1101 via a guide rail 11, and a connecting rod 9043 is provided between the top of the lifting rod 9041 and the slider 1101. One end of the connecting rod 9043 is hinged to the lifting rod 9041, and the other end of the connecting rod 9043 is hinged to the slider 1101. A first elastic telescopic rod 1102 is fixed on the disc 903, and the movable end of the first elastic telescopic rod 1102 is fixedly connected to the slider 1101.

[0048] The first elastic telescopic rod 1102 can push the slider 1101 toward the center position of the disk 903, thereby pushing the lifting rod 9041 upward through the connecting rod 9043, which in turn drives the movable rod 9042 upward to push the first lifting piston 101, thus maintaining the upward thrust on the first lifting piston 101.

[0049] To adjust the discharge pressure range, the lifting adjustment mechanism includes a threaded rod 9. The top end of the threaded rod 9 extends into the housing 401 and is rotatably connected to the bottom end of the disc 903. A guide rod 9031 is fixed to the bottom end of the disc 903, and the bottom end of the guide rod 9031 extends movably to the outside of the housing 401. When the threaded rod 9 rotates, it can push the disc 903 to move up and down. Through the guidance of the guide rod 9031, it can be ensured that the disc 903 will not rotate with the threaded rod 9 during the process of moving up and down.

[0050] The bottom end of the threaded rod 9 extends to the outside of the housing 401 and is fixed with a rotating handle 901. A positioning nut 902 is threadedly installed on the outside of the threaded rod 9 between the rotating handle 901 and the housing 401.

[0051] Pressure sensors are installed on both the feed conduit 4011 and the pressure-stabilized discharge conduit 4012.

[0052] When adjusting the discharge pressure range, first gradually increase the pressure of the feed conduit 4011, and always pay attention to the internal pressure of the pressure-stabilized discharge conduit 4012. When the internal pressure of the pressure-stabilized discharge conduit 4012 fluctuates within a small range, turn the handle 901 to drive the threaded rod 9 to rotate, and the disc 903 to move upward, so that the first elastic telescopic rod 1102 can be further compressed. At this time, the internal pressure of the pressure-stabilized discharge conduit 4012 can be further increased. Then, when the internal pressure of the pressure-stabilized discharge conduit 4012 reaches dynamic equilibrium again, the discharge pressure can be increased. After adjusting the discharge pressure to the desired range, turn the positioning nut 902 so that the positioning nut 902 contacts the bottom end of the outer shell 401, and the threaded rod 9 can be locked.

[0053] Example 4

[0054] Reference Figure 1 , 2The difference between this embodiment and embodiment 1 is that the diversion mechanism includes a diversion container 7, which is a cylindrical structure. A return inlet pipe 701, a direct return pipe 702, and a return collection pipe 703 are respectively connected to the diversion container 7. The return inlet pipe 701 is connected to the residual material return conduit 4014, the direct return pipe 702 is connected to the return conduit 102, and the return collection pipe 703 is connected to the buffer tank 5.

[0055] A piston tube 8 is connected to the return inlet pipe 701. The piston tube 8 is connected to the direct return pipe 702. A second lifting piston 801 is installed inside the piston tube 8. A second elastic telescopic rod 802 is installed between the top of the second lifting piston 801 and the inner wall of the top of the piston tube 8. A connecting rod 803 is also fixed to the top of the second lifting piston 801. The top of the connecting rod 803 extends movably to the piston tube 8 and is connected to a lifting bracket 707. A transmission bar 706 is movably installed on the outside of the diversion container 7. The top of the transmission bar 706 is fixed to the lifting bracket 707. A drive shaft 704 is installed inside the diversion container 7. One end of the drive shaft 704 extends to the outside of the diversion container 7 and is fixed to a transmission wheel 7041. The transmission wheel 7041 and the transmission bar 706 are meshed by teeth. An arc-shaped baffle 705 is fixed to the outside of the drive shaft 704.

[0056] When the pressure inside the return inlet pipe 701 is low, the pressure on the second lifting piston 801 is low, and the compression of the second elastic telescopic rod 802 is small. At this time, the second lifting piston 801 is in a lower position, and the position where the arc-shaped baffle 705 stops will block the direct return pipe 702, and the return collection pipe 703 will be opened. At this time, the returned material enters the buffer tank 5 and is collected. When the pressure inside the return inlet pipe 701 is high, the second lifting piston 801 is pushed upward, thereby pushing the lifting bracket 70 7 moves upward, which in turn drives the transmission bar 706 to move upward. The transmission bar 706 meshes with the transmission wheel 7041 to drive the drive shaft 704 to rotate, thereby changing the arc-shaped baffle 705, causing the direct return pipe 702 to open and the return collection pipe 703 to close. At this time, the return material flows directly back to the material storage tank 1 through the return conduit 102. This can effectively utilize the pressure of the return material. When the pressure is sufficient, it flows directly back to the material storage tank 1. When the pressure is insufficient, it is introduced into the buffer tank 5, which is more energy-saving and environmentally friendly.

[0057] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0058] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0059] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0060] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A constant pressure feeding system for chemical production, comprising a material storage tank (1), a reactor (2), a feeding pump (3), a constant pressure mechanism (4), a shunt mechanism and a buffer tank (5), characterized in that: The feed pump (3) is connected to the material storage tank (1) by a first conduit (12), and the pressure stabilizing mechanism (4) is installed between the feed pump (3) and the reactor (2). The pressure stabilizing mechanism (4) includes a housing (401), on which a feed pipe (4011) and a pressure stabilizing discharge pipe (4012) are provided. The feed pipe (4011) is connected to the feed pump (3), and the pressure stabilizing discharge pipe (4012) is connected to the reactor (2). The housing (401) is also provided with a residual material return pipe (4014), which is connected to a diversion mechanism and is connected to a buffer tank (5) and a material storage tank (1) respectively through the diversion mechanism. A reflux pump (6) is provided between the buffer tank (5) and the material storage tank (1); A diversion cylinder (10) is fixed on the inner wall of the top of the outer shell (401). A pressure reducing return port (1013) is provided on the side of the diversion cylinder (10) near the residual material return conduit (4014). Multiple pressure reducing return ports (1013) are provided and are distributed at equal intervals from top to bottom. A pressure stabilizing outlet is provided on the side of the diversion cylinder (10) near the pressure stabilizing discharge conduit (4012). A first lifting piston (101) is slidably installed on the diversion cylinder (10). A return baffle (1012) and a discharge baffle (1011) are fixed on both sides of the top of the first lifting piston (101). An elastic mechanism is provided between the bottom end of the first lifting piston (101) and the outer shell (401). The elastic mechanism includes a disc (903), the bottom end of which is provided with a lifting adjustment mechanism, the top end of which is fixed with a guide sleeve (904), the top end of which is movably mounted with a lifting rod (9041), the top end of which is fixed with a movable rod (9042), the top end of which extends movably into the interior of the diverter (10) and is fixed with the first lifting piston (101); A slider (1101) is slidably mounted on the top of the disc (903) via a guide rail (11). A connecting rod (9043) is provided between the top of the lifting rod (9041) and the slider (1101). One end of the connecting rod (9043) is hinged to the lifting rod (9041), and the other end of the connecting rod (9043) is hinged to the slider (1101). A first elastic telescopic rod (1102) is fixed on the disc (903), and the movable end of the first elastic telescopic rod (1102) is fixedly connected to the slider (1101).

2. The constant pressure feeding system for chemical production according to claim 1, characterized in that: A flow meter (4013) is installed on the pressure-stabilized discharge conduit (4012), and a reflux conduit (102) is provided on the material storage tank (1). The inlet of the reflux pump (6) is connected to the buffer tank (5), and the outlet of the reflux pump (6) is connected to the pressure-stabilized discharge conduit (4012) through the second conduit (601).

3. The constant pressure feeding system for chemical production according to claim 1, characterized in that: The lifting adjustment mechanism includes a threaded rod (9), the top end of which extends into the housing (401) and is rotatably connected to the bottom end of the disc (903). A guide rod (9031) is fixed to the bottom end of the disc (903), and the bottom end of the guide rod (9031) extends movably to the outside of the housing (401).

4. The constant pressure feeding system for chemical production according to claim 3, characterized in that: The bottom end of the threaded rod (9) extends to the outside of the housing (401) and is fixed with a rotating handle (901). A positioning nut (902) is threadedly installed on the outside of the threaded rod (9) between the rotating handle (901) and the housing (401).

5. The constant pressure feeding system for chemical production according to claim 1, characterized in that: Pressure sensors are installed on both the feed conduit (4011) and the pressure-stabilized discharge conduit (4012).

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