Continuous reforming agent injection device

Abstract

The invention provides a continuous reforming agent injection device which comprises a storage assembly, an agent pushing assembly and an agent discharging assembly, the storage assembly comprises a quantitative cylinder provided with a piston, and an injection agent is stored in the quantitative cylinder; the medicine pushing assembly comprises a fixing plate connected with a lead screw, the fixing plate is arranged above the quantitative cylinder, the lead screw is arranged between the fixing plate and the quantitative cylinder, a motor for driving the lead screw is arranged on the fixing plate, a pushing plate is arranged on the lead screw, and the pushing plate is connected with a piston in the quantitative cylinder; the medicine outlet assembly comprises a rotating shaft with a liquid outlet in the bottom, the rotating shaft penetrates through the piston and the quantitative cylinder to be connected with the lead screw, and the liquid outlet is communicated with the inner side and the outer side of the quantitative cylinder. When the medicament is injected into the reaction tank, the medicament is rotationally stirred and rotationally distributed at the same time, so that the medicament can enter the reaction tank more uniformly, the medicament and liquid in the reaction tank are conveniently and uniformly mixed, and the technical problem that the medicament enters the reaction tank intensively and is inconvenient to uniformly mix when the medicament is added into the reaction tank is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chemical equipment, in particular to a continuous reforming agent injection device. BACKGROUND

[0002] In continuous chemical production processes, especially in systems involving catalytic reactions, high temperature and high pressure operations, or requiring precise additive control (such as catalytic reforming process in petroleum refining), it is a key operation to continuously and quantitatively inject liquid additives (such as organic chlorides, organic sulfides, etc.) into the reaction vessel. Such additives are crucial for maintaining catalyst activity, optimizing reaction pathways, or controlling product selectivity. Therefore, high requirements are placed on the precise metering capability, continuous supply stability, and effective mixing efficiency of the agent and the reaction system of the agent injection device.

[0003] Continuous reforming is a secondary petroleum processing technology, the main raw materials for processing are low octane straight-run naphtha, hydrogenated naphtha, etc., using platinum Pt-tin Sn bimetallic catalyst, at a high temperature of about 500℃, the molecules are rearranged, isomerized, the production of aromatic hydrocarbons is increased, and the octane number of gasoline is improved. In this process, a certain amount of tetrachloroethylene, dimethyl disulfide and other agents need to be added in the reaction tank of the injection area, and an injection device is needed at this time.

[0004] The prior art has been able to realize automatic replenishment and basic quantitative output of the agent storage tank, ensure the continuous supply of the agent in the device, and solve the efficiency problem of frequent replacement of the feeding unit. However, these conventional injection devices have limitations: the injection mode is often to inject the quantitative agent in a concentrated form through a single or a few outlet points directly into the reaction tank. This concentrated injection mode can cause the initial distribution of the injected agent in the reaction medium to be extremely uneven, forming a local area with too high concentration. Therefore, how to effectively improve the initial dispersion of the agent when injected into the reaction system under the premise of ensuring continuous and accurate metering supply, promote the rapid and uniform mixing of the agent and the reaction fluid, and thus optimize the reaction process control, improve the resource utilization efficiency and the quality of the final product, has become a problem to be solved. SUMMARY

[0005] The present application provides a continuous reforming agent injection device to solve the technical problem that the agent is concentrated into the reaction tank when adding the agent to the reaction tank, which is not convenient for mixing.

[0006] The present application provides a continuous reforming agent injection device, comprising:

[0007] The storage assembly comprises a dosing cylinder provided with a piston, and the dosing cylinder stores the injection agent.

[0008] The medicine pushing assembly comprises a fixed plate connected with a screw rod, the fixed plate is arranged above the dosing cylinder, the screw rod is arranged between the fixed plate and the dosing cylinder, a motor for driving the screw rod is arranged on the fixed plate, a push plate is arranged on the screw rod, and the push plate is connected with the piston in the dosing cylinder;

[0009] The medicine discharging assembly comprises a rotating shaft with a liquid discharging port arranged at the bottom, the rotating shaft is arranged in the axial direction of the dosing cylinder, the rotating shaft is connected with the screw rod through the piston and the dosing cylinder, and the liquid discharging port is connected between the inside and the outside of the dosing cylinder.

[0010] In an embodiment of the present application, the medicine discharging assembly further comprises a stirring structure, the stirring structure comprises a hollow shaft connected to the bottom of the rotating shaft, the hollow shaft is connected with the dosing cylinder through the liquid discharging port, and stirring blades are arranged below the hollow shaft.

[0011] In an embodiment of the present application, the medicine discharging assembly further comprises a medicine distributing structure, the medicine distributing structure comprises a liquid discharging pipe arranged in the stirring blade and a plurality of shunt pipes, the liquid discharging pipe is connected with the hollow shaft, and the plurality of shunt pipes are connected in the circumferential direction of the liquid discharging pipe.

[0012] In an embodiment of the present application, a plurality of liquid discharging ports are arranged in the circumferential direction of the connection part between the hollow shaft and the rotating shaft, and the connection part between adjacent liquid discharging ports connects the hollow shaft and the rotating shaft as a same rotary shaft.

[0013] In an embodiment of the present application, the liquid discharging pipe extends along the direction of the hollow shaft, the plurality of shunt pipes are arranged along the blades of the stirring blade, and the ends of the shunt pipes are provided with spray heads penetrating to the outside of the blades of the stirring blade.

[0014] In an embodiment of the present application, the blades of the stirring blade are straight plates, and the length direction of the blades of the stirring blade is parallel to the axial direction of the liquid discharging pipe.

[0015] In an embodiment of the present application, the medicine pushing assembly further comprises a sliding rod arranged between the fixed plate and the dosing cylinder, the sliding rod supports the fixed plate to form a spacing with the dosing cylinder, the stroke of the push plate in the spacing corresponds to the stroke of the piston in the dosing cylinder, and the sliding rod is marked with a scale.

[0016] In an embodiment of the present application, the storage assembly further comprises a push rod penetrating through the dosing cylinder and connected between the piston and the push plate.

[0017] In an embodiment of the present application, the storage assembly further comprises a liquid inlet pipe arranged at the bottom of the dosing cylinder, and a one-way valve is arranged on the liquid inlet pipe.

[0018] In an embodiment of the present application, two push rods and two sliding rods are arranged respectively and symmetrically with respect to the screw rod.

[0019] The beneficial effects of the present application: the continuous reforming injection device provided by the present application can make the medicine more evenly enter the reaction tank by rotating and stirring while rotating the medicine distribution when the medicine is injected into the reaction tank, and facilitate the mixing of the medicine and the liquid in the reaction tank. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings incorporated in the specification and forming a part thereof reveal embodiments consistent with the present application and serve to explain the principles of the present application. It is apparent to those skilled in the art that the following description of the drawings is only a few embodiments of the present application, and other drawings can be obtained from these drawings without creative labor.

[0021] In the drawings:

[0022] Figure 1 The structural schematic diagram of the continuous reforming injection device provided by an embodiment of the present application is shown in the figure.

[0023] Figure 2 The structural schematic diagram of the storage assembly provided by an embodiment of the present application is shown in the figure.

[0024] Figure 3 The structural schematic diagram of the medicine pushing assembly provided by an embodiment of the present application is shown in the figure.

[0025] Figure 4 The structural schematic diagram of the medicine pushing assembly provided by an embodiment of the present application is shown in the figure.

[0026] The reference signs are as follows:

[0027] 101, dosing cylinder; 102, piston; 103, push rod; 104, liquid inlet pipe; 105, one-way valve; 201, fixed plate; 202, slide rod; 203, screw rod; 204, motor; 205, push plate; 301, rotating shaft; 302, liquid outlet; 303, hollow shaft; 304, stirring blade; 305, liquid outlet pipe; 306, shunt pipe; 307, spray head. DETAILED DESCRIPTION

[0028] The embodiments of the present application are described below through specific, concrete examples, and those skilled in the art can easily understand other advantages and effects of the present application from the disclosure of the present specification. The present application can also be implemented or applied through other different specific embodiments, and each detail in the present specification can be modified or changed based on different views and applications without departing from the spirit of the present application, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0029] It is to be noted that the drawings provided in the following embodiments only schematically illustrate the basic concepts of the present application, and the drawings only show the components related to the present application, but are not drawn according to the number, shape and size of the components in actual implementation, and the shapes, number and proportions of the components in actual implementation can be arbitrarily changed, and the layout pattern of the components can be more complex.

[0030] In the following description, a large number of details are discussed to provide a more thorough explanation of the embodiments of the present application, however, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details, and in other embodiments, the known structures and devices are shown in the form of block diagrams rather than in the form of details, to avoid making the embodiments of the present application difficult to understand.

[0031] Please refer to Figures 1 to 4 , Figure 1 A continuous reforming agent injection device is provided in an embodiment of the present application, comprising:

[0032] A storage assembly comprising a dosing cylinder 101 provided with a piston 102, the dosing cylinder 101 storing an agent;

[0033] A medicine pushing assembly comprising a fixed plate 201 connected with a lead screw 203, the fixed plate 201 being arranged above the dosing cylinder 101, the lead screw 203 being arranged between the fixed plate 201 and the dosing cylinder 101, a motor 204 being arranged on the fixed plate 201 to drive the lead screw 203, a push plate 205 being arranged on the lead screw 203, the push plate 205 being connected with the piston 102 in the dosing cylinder 101;

[0034] A medicine discharging assembly comprising a rotating shaft 301 provided with a liquid outlet 302 at the bottom, the rotating shaft 301 being arranged in the axial direction of the dosing cylinder 101, the rotating shaft 301 being connected with the lead screw 203 through the piston 102 and the dosing cylinder 101, the liquid outlet 302 being in communication with the inside and outside of the dosing cylinder 101.

[0035] Specifically, in the embodiment of the present application, the motor 204 in the medicine pushing assembly drives the lead screw 203 to rotate to move the push plate 205, thereby pulling the piston 102 to move in the dosing cylinder 101, and then pushing the agent in the dosing cylinder 101 into the medicine discharging assembly, and at the same time, the rotating shaft 301 connected with the lead screw 203 is rotated, so that the agent is in a centrifugal state when flowing out of the liquid outlet 302 at the bottom of the rotating shaft 301, and is scattered to the circumferential area from the liquid outlet 302, thereby enhancing the uniformity of the distribution of the agent when entering the reaction tank, and avoiding excessive local concentration.

[0036] Specifically, the continuous reforming injection device is realized by the structural connection among the storage assembly, the pushing assembly and the medicine outlet assembly. The storage assembly is used as a temporary storage and quantitative supply unit. The main body of the storage assembly is a vertical quantitative cylinder 101, which is internally fitted with a piston 102 that can slide along the axial direction. The piston 102 separates the internal cavity of the quantitative cylinder 101 into two sealed intervals, i.e., an upper interval and a lower interval. The upper interval can be used as a power transmission zone, and the lower interval is a medicine storage zone. A through hole can be arranged in the center of the piston 102, which is used as a structural basis for connecting the shaft 301 of the medicine outlet assembly and the lead screw 203 of the pushing assembly. Two rigid push rods 103 fixed on the upper surface of the piston 102 extend to the outside of the quantitative cylinder 101, which are used to transmit the linear driving force from the pushing assembly. The bottom side wall of the quantitative cylinder 101 is integrated into a liquid pipe 104 and is provided with a one-way valve 105, which ensures that the external medicine can be injected into the storage zone in one direction and prevents backflow from interfering with the measurement accuracy.

[0037] The pushing assembly is used as a power transmission center. The fixed plate 201 is horizontally arranged above the quantitative cylinder 101, which forms a stable support structure. The fixed plate 201 is centrally installed with a driving motor 204, and the output shaft is vertically connected to the lead screw 203. The lead screw 203 extends downward, and the shaft body is connected to the push plate 205 through thread engagement. The push plate 205 is connected to the piston 102 through the push rods 103 on both sides. The fixed plate 201 is arranged on the quantitative cylinder 101 through two vertically fixed slide rods 202. The surfaces of the two slide rods 202 are marked with scales, which can feedback the displacement of the push plate 205 in real time to indirectly monitor the liquid level in the quantitative cylinder 101. The bottom surface of the push plate 205 is rigidly connected to the top end of the push rod 103 of the piston 102, so that the rotational motion of the lead screw 203 is converted into the linear motion of the push plate 205, which is then pushed downward by the push rod 103 to stably press the piston 102 in the quantitative cylinder 101. Thus, the rotational input of the motor 204 is converted into the linear displacement output of the piston 102, which realizes the control of the discharge amount of the injected medicine in the quantitative cylinder 101.

[0038] The medicine outlet assembly is the key to realize the dispersion injection of the medicine. The top end of the rotating shaft 301 is coaxially fixed to the bottom end of the lead screw 203, and a plurality of liquid outlet openings 302 are arranged in the bottom of the rotating shaft 301 to form a channel for the outflow of the medicine. When the piston 102 is driven to move downward by the pushing assembly, the medicine in the storage zone of the quantitative cylinder 101 is extruded and enters the internal flow channel of the rotating shaft 301 through the liquid outlet openings 302 in the bottom of the rotating shaft 301, and is further distributed to the medicine distribution structure inside the rotating shaft 301. The outer wall of the hollow shaft 303 of the medicine distribution structure is fixed with a plurality of stirring blades 304 to disturb the reaction medium, and the internal coaxial arrangement of the liquid outlet pipe 305 uniformly radiates a plurality of vertically distributed shunt pipes 306 along the circumference. The end of each shunt pipe 306 is integrated with a microporous nozzle 307. The medicine is finally sprayed out through these densely distributed nozzles 307, and the stirring blades 304 rotate at high speed under the drive of the rotating shaft 301, so that the sprayed medicine is diffused to all parts of the reaction system.

[0039] Thus, the medicine pushing assembly controls the displacement of the piston 102 through the screw rod 203 mechanism, and realizes the accurate metering of the injection dose in combination with the fixed volume of the dosing cylinder 101; the coaxial connection of the medicine outlet assembly and the medicine pushing assembly ensures the synchronization of the medicine extrusion and stirring dispersion, so that the medicine is uniformly distributed in the injection space. Through the precise cooperation of the mechanical structure, the whole device ensures the stability of continuous injection and solves the problem of uneven mixing caused by traditional centralized injection.

[0040] Please refer to the accompanying drawings Figure 1 and Figure 4 In an embodiment, the medicine outlet assembly further comprises a stirring structure, the stirring structure comprising a hollow shaft 303 connected to the bottom of the rotating shaft 301, the hollow shaft 303 being in communication with the dosing cylinder 101 through the liquid outlet 302, and a stirring blade 304 being arranged below the hollow shaft 303. The medicine outlet assembly further comprises a medicine distribution structure, the medicine distribution structure comprising a liquid discharge pipe 305 and a shunt pipe 306 arranged in the stirring blade 304, the liquid discharge pipe 305 being in communication with the hollow shaft 303, and a plurality of shunt pipes 306 being connected to the circumferential direction of the liquid discharge pipe 305.

[0041] Specifically, in the embodiment of the present application, the medicine outlet assembly integrates the functions of medicine delivery and dynamic dispersion through integrated design. The stirring structure comprises a hollow shaft 303 connected to the bottom of the rotating shaft 301, the top end of the hollow shaft 303 being coaxially and rigidly connected to the rotating shaft 301, and a liquid outlet 302 being provided at the connection part to make the inner cavity of the dosing cylinder 101 and the internal passage of the hollow shaft 303 directly through. The stirring blade 304 is fixedly installed at the lower part of the hollow shaft 303 and generates a circulating flow field when rotating. The medicine distribution structure is integrated in the internal space of the stirring blade 304. The liquid discharge pipe 305 serves as the main passage and penetrates the inside of the hollow shaft 303 along the axial direction of the hollow shaft 303, the top end of the liquid discharge pipe 305 being in communication with the inner cavity of the hollow shaft 303 to form the main path of medicine delivery. A plurality of secondary shunt pipes 306 are radially arranged around the liquid discharge pipe 305, the arrangement of the shunt pipes 306 being matched with the blade shape of the stirring blade 304, each group of shunt pipes 306 being embedded in the structure of a single stirring blade 304 and extending along the length direction of the blade.

[0042] Thus, when the rotating shaft 301 drives the hollow shaft 303 to rotate, the stirring blade 304 produces high-speed shearing action on the reaction medium to form a turbulent flow region; at the same time, the medicine extruded by the medicine pushing assembly flows through the liquid outlet 302 at the bottom of the rotating shaft 301 into the hollow shaft 303, and is distributed to each shunt pipe 306 through the liquid discharge pipe 305 and finally sprayed out. Since the spraying area is located in the turbulent flow region formed by the stirring blade 304, the sprayed medicine droplets are instantaneously rolled into the vortex generated by the stirring blade 304, so that the medicine is fully mixed.

[0043] Further, the hollow shaft 303 coaxially connected with the bottom end of the rotating shaft 301 forms a medicament delivery channel, and the hollow shaft 303 is communicated with the inner cavity of the dosing cylinder 101 through the liquid discharge port 302 at the bottom of the rotating shaft 301. The stirring blade 304 is fixedly installed at the lower wall of the outer wall of the hollow shaft 303, forming a basic stirring structure, so that the medicament is synchronously driven to rotate the stirring blade 304 during the output process, realizing the function coupling of fluid forced mixing and medicament delivery. The liquid discharge pipe 305 can be embedded in the stirring blade 304, and the liquid discharge pipe 305 is in sealing butt joint with the channel of the hollow shaft 303. And along the circumferential direction of the liquid discharge pipe 305, there are four rows of sixty sub-flow pipes 306 (fifteen vertical layered arrangements in each row), forming a dispersion structure with the stirring shaft as the reference, so that the medicament is diffused in multiple dimensions to the reaction tank space through the rotating stirring blade 304 framework.

[0044] When the motor 204 drives the medicine pushing assembly to press down, the medicament flows through the liquid discharge port 302, the hollow shaft 303, the liquid discharge pipe 305, and the sub-flow pipe 306 in turn, and finally flows out. At the same time, the rotating shaft 301 drives the stirring blade 304 to rotate at high speed, so that the flowing medicament is dispersed, and the secondary diffusion is realized through the eddy current generated by the stirring blade 304. The limitations of traditional concentrated injection are broken, and the dispersion and mixing of the medicament are simultaneously completed, which significantly improves the uniformity of the reaction system. Thus, the problems of fixed drug distribution point and mixing lag in the traditional device are fundamentally solved by using this structure design, the dispersion effect of the medicament is improved, and the local concentration enrichment is eliminated.

[0045] Please refer to the accompanying drawings Figure 4 In an embodiment, a plurality of liquid discharge ports 302 are arranged on the circumferential direction of the connection part between the hollow shaft 303 and the rotating shaft 301, and the connection part between adjacent liquid discharge ports 302 connects the hollow shaft 303 and the rotating shaft 301 as the same rotating shaft 301. The liquid discharge pipe 305 extends along the direction of the hollow shaft 303, and a plurality of sub-flow pipes 306 are arranged along the blades of the stirring blade 304, and the distal end of the sub-flow pipe 306 is provided with a spray head 307 which penetrates to the outside of the blade of the stirring blade 304. The blade of the stirring blade 304 is a straight plate, and the length direction of the blade of the stirring blade 304 is parallel to the axial direction of the liquid discharge pipe 305.

[0046] Specifically, in the embodiment of the present application, the hollow shaft 303 and the rotating shaft 301 are connected at a position which is circumferentially provided with a plurality of, for example, four, liquid discharge ports 302 to form an annular shunt array, and the hollow shaft 303 and the shaft body of the rotating shaft 301 are seamlessly connected by a solid connection between adjacent liquid discharge ports 302. This configuration fuses the rotating shaft 301 and the hollow shaft 303 into a rigid coaxial rotary body, ensuring efficient torque transmission while constructing a radial fluid distribution channel. The liquid discharge pipe 305 extends axially along the hollow shaft 303 to form a backbone flow passage, and is integrated with the stirring blade 304 structure through a network of circumferentially connected shunt pipes 306. A plurality of shunt pipes 306 are embedded inside the straight plate-shaped stirring blade 304, with their tip nozzles 307 penetrating through the outside of the blade to form spray ports, and all the shunt pipes 306 are arranged along the blade contour profile in an axially stacked structure.

[0047] In this way, the axial extension between the liquid discharge pipe 305 and the stirring blade 304 structure creates a flow passage through the blade, allowing the nozzles 307 to be precisely aligned with the blade leading edge trajectory. When the device is in operation, the flow field generated by the straight plate blade cooperates with the parallelly arranged shunt pipes 306, and the medicament is sprayed out of several shunt pipes 306 along the length of the blade in a hierarchical manner, thereby establishing a progressive diffusion effect of the injection concentration gradient. In the dynamic working mode, when the rotating shaft 301 drives the stirring blade 304 to rotate, the medicament completes the primary distribution under the action of centrifugal force, and after forming a spiral flow state through the liquid discharge pipe 305, it is injected into the reaction medium as a tangential jet through the layered nozzles 307. At this time, the shear flow field generated by the blade can instantaneously tear the medicament jet, and the synchronous movement of the nozzles 307 and the blade can form a continuous concentration cloud effect of the medicament in three-dimensional space.

[0048] Please refer to the accompanying drawings Figure 1 and Figure 3 In one embodiment, the medicament pushing assembly further includes a slide rod 202 installed between the fixed plate 201 and the dosing cylinder 101, which supports the fixed plate 201 to form a spacing with the dosing cylinder 101, so that the stroke of the push plate 205 in the spacing corresponds to the stroke of the piston 102 in the dosing cylinder 101, and the slide rod 202 is marked with a scale.

[0049] Specifically, in the embodiment of the present application, the two slide rods 202 in the medicine pushing assembly are vertically arranged between the fixed plate 201 and the metering cylinder 101, forming a symmetrical rigid support frame. The push plate 205 is matched with the slide rod 202 through the screw rod 203 arranged on the fixed plate 201, and the axial stroke of the push plate 205 on the screw rod 203 is in a synchronous mapping relationship with the displacement of the piston 102 in the metering cylinder 101. A scale is marked on the surface of the slide rod 202, the zero reference of which corresponds to the piston 102 being at the extreme position at the top of the metering cylinder 101, and the maximum scale value corresponds to the bottom position of the metering cylinder 101. The operator can directly read the real-time displacement of the piston 102 by observing the position of the push plate 205 relative to the scale, and then convert the residual amount of the medicine through the cylinder diameter parameter. The mechanical metering method is not affected by electrical interference and can still provide reliable position feedback under the continuous reforming condition of high temperature and high pressure.

[0050] In this way: the rigid body support of the slide rod 202 ensures the stability of the structure of the fixed plate 201, avoiding the bending moment deformation that may be caused by the movement of the driving screw rod 203 pulling the push plate 205 during the medicine pushing process. When the device is operated for a long time under the continuous reforming condition of high temperature and high pressure, the thermal expansion coefficient of the material of the slide rod 202 can be matched with the shell of the metering cylinder 101, avoiding the jamming phenomenon caused by thermal stress, and the thermodynamic compatibility design ensures the dose accuracy of the continuous reforming device under all working conditions.

[0051] Please refer to the accompanying drawings Figure 1 and Figure 2 In an embodiment, the storage assembly further includes a push rod 103, which penetrates the metering cylinder 101 and is connected between the piston 102 and the push plate 205. The storage assembly further includes a liquid inlet pipe 104 arranged at the bottom of the metering cylinder 101, and a one-way valve 105 is arranged on the liquid inlet pipe 104.

[0052] Specifically, in the embodiment of the present application, two push rods 103 vertically penetrate the top end of the metering cylinder 101 in the transmission structure of the storage assembly and the medicine pushing assembly. The lower end of the push rod 103 can be rigidly locked with the piston 102 through a flange, and the upper end can be floatingly connected with the bottom of the push plate 205 through a ball hinge. This symmetrical layout of the two push rods 103 forms a directional guide mechanism for the piston 102, which can ensure the accurate displacement of the piston 102 along the axis of the metering cylinder 101 even when the push plate 205 moves under non-uniform load (i.e., when the coaxiality deviation of the movement of the push plate 205 pulled by the screw rod and the movement of the piston 102 is large). The equal ratio design of the length of the push rod 103 and the height of the cylinder body makes the stroke limit position of the push plate 205 accurately correspond to the mechanical stop point of the piston 102 at the bottom / top of the cylinder, forming a displacement hard limit protection mechanism.

[0053] Further, the liquid inlet system at the bottom of the dosing cylinder 101 can adopt a radial cutting structure, and the liquid inlet pipe 104 is arranged at the bottom cavity of the cylinder body at a corresponding angle. The built-in one-way valve 105 can adopt a composite design of a conical valve core and a high-temperature alloy spring. When the piston 102 in the dosing cylinder 101 moves upward to form negative pressure in the cavity, the valve core is separated from the valve seat under the action of pressure difference, so that the medicament is injected into the dosing cylinder 101. When the medicine pushing assembly is pressed downward, the valve core is closed under the double actions of spring pressure and fluid positive pressure, and the backflow is completely blocked. The liquid inlet process of the injection can form a vortex flow state, promote the premixing of the medicament, and avoid the air pocket phenomenon that can be caused by the traditional liquid inlet mode, thereby providing a stable and reliable medicament metering basis for the continuous reforming process.

[0054] Please refer to the accompanying drawings Figure 1 Figure 2 In an embodiment, the push rod 103 and the slide rod 202 are respectively provided with two rods, and are symmetrically arranged about the lead screw 203.

[0055] Specifically, in the embodiment of the present application, the two slide rods 202 and the two push rods 103 form a four-column symmetric force bearing structure, which is uniformly distributed at 90 degrees around the axis of the lead screw 203. The slide rod 202 is arranged between the two ends of the fixed plate 201 and the top of the dosing cylinder 101, forming a peripheral rigid support frame; the push rod 103 penetrates the top cover of the dosing cylinder 101 and forms a power transmission connection with the push plate 205 between the two slide rods 202. The spatially statically determinate structure is constructed by the double composite symmetric layout, so that the driving torque borne by the lead screw 203 is uniformly converted into axial thrust, eliminating the risk of unbalanced load existing in the traditional single push rod 103 system.

[0056] When the motor 204 drives the lead screw 203 to rotate, the four-column system forms a dynamic mechanical balance: the slide rod 202 bears the main bending moment load, ensuring the precise displacement of the push plate 205 along the axis; the push rod 103 transmits the axial thrust, so that the piston 102 realizes sliding without lateral force in the dosing cylinder 101, which can reduce the wear rate of the piston 102 sealing ring. The symmetric layout has vibration suppression characteristics, and the four-bar structure can increase the natural frequency of the system, effectively avoiding mechanical resonance under high-speed injection conditions, which can be used as the structural basis for dose control of the continuous reforming process.

[0057] In an embodiment, the storage assembly includes a dosing cylinder 101, and the dosing cylinder 101 is provided with a piston 102. The piston 102 is provided with two push rods 103 symmetrically arranged on the upper surface. The bottom side of the dosing cylinder 101 is provided with a liquid inlet structure, and the liquid inlet structure includes a liquid inlet pipe 104. The liquid inlet pipe 104 is provided with a one-way valve 105.

[0058] The medicine pushing assembly includes a fixed plate 201, and the lower surface of the fixed plate 201 is symmetrically provided with two slide rods 202. A push plate 205 is slidingly installed between the two slide rods 202. The center position of the push plate 205 is provided with a lead screw 203, and the top of the lead screw 203 is provided with a motor 204.

[0059] The medicine discharging assembly comprises a rotating shaft 301, four liquid discharging openings 302 are uniformly arranged at the bottom of the rotating shaft 301, a stirring structure is arranged below the rotating shaft 301, a medicine distributing structure is arranged in the stirring structure, the stirring structure comprises a hollow shaft 303, stirring blades 304 are arranged below the hollow shaft 303, the medicine distributing structure comprises a liquid discharging pipe 305, four groups of shunt pipes 306 are uniformly arranged at the circumference of the liquid discharging pipe 305, and nozzles 307 are arranged on the side of the shunt pipes 306 away from the liquid discharging pipe 305, each group of shunt pipes 306 is provided with fifteen shunt pipes, and the shunt pipes are vertically distributed.

[0060] In use, the motor 204 drives the screw rod 203 to rotate, so that the push plate 205 drives the push rod 103 to push the piston 102 downwards, the medicine in the quantitative cylinder 101 is extruded into the liquid discharging pipe 305 through the liquid discharging openings 302, and the medicine is sprayed out from the nozzles 307 through the shunt pipes 306. The screw rod 203 rotates synchronously to drive the rotating shaft 301 to rotate, so that the rotating shaft 301 drives the stirring blades 304 to rotate, and the medicine is stirred to be more uniformly mixed into the liquid in the reaction tank.

[0061] In summary, the continuous reforming medicine injection device provided by the application adopts a three-stage modular structure design, the storage assembly is formed by a piston in a quantitative cylinder and double push rods to constitute a metering unit; the medicine pushing assembly is driven by a motor to drive a screw rod to drive a push plate, and a four-column stable frame is formed by the symmetrically distributed double slide rods and double push rods, so that the piston can realize high-precision linear displacement in the quantitative cylinder; the medicine discharging assembly integrates a rotating shaft and a hollow shaft, and the bottom of the rotating shaft is nested with a stirring structure and a medicine distributing structure. During the operation of the device, the medicine enters the hollow shaft through the channel at the bottom of the rotating shaft, is shunted to a plurality of nozzles in the stirring structure, and is sheared to form a uniform concentration field under the synergistic action of rotary stirring and dispersion spraying, so that the uniformity of the reaction system is significantly improved, and precise medicine injection and efficient mixing of the continuous reforming process are realized.

[0062] The above embodiments only exemplarily illustrate the principles and effects of the application, and are not used to limit the application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the application should be covered by the claims of the application.

Claims

1. A continuous reforming injection device, characterized by, The application relates to a medicine injection device. The device comprises a storage assembly, a pushing assembly and a medicine outlet assembly. The storage assembly comprises a cartridge (101) provided with a piston (102), and the cartridge (101) stores medicine. The pushing assembly comprises a fixed plate (201) connected with a screw rod (203), the fixed plate (201) is arranged above the cartridge (101), the screw rod (203) is arranged between the fixed plate (201) and the cartridge (101), a motor (204) is arranged on the fixed plate (201) and drives the screw rod (203), a pushing plate (205) is arranged on the screw rod (203) and is connected with the piston (102) in the cartridge (101).

2. The apparatus of claim 1, wherein, The medicine outlet assembly comprises a rotating shaft (301) provided with a liquid outlet (302) at the bottom, the rotating shaft (301) is arranged on the axial direction of the cartridge (101), the rotating shaft (301) penetrates the piston (102) and the cartridge (101) and is connected with the screw rod (203), and the liquid outlet (302) is connected with the inside and outside of the cartridge (101).

3. The apparatus of claim 2, wherein, The medicine outlet assembly further comprises a stirring structure, the stirring structure comprises a hollow shaft (303) connected with the bottom of the rotating shaft (301), the hollow shaft (303) is connected with the cartridge (101) through the liquid outlet (302), and stirring blades (304) are arranged below the hollow shaft (303).

4. The apparatus of claim 2, wherein, The medicine outlet assembly further comprises a medicine distribution structure, the medicine distribution structure comprises a liquid outlet pipe (305) and a shunt pipe (306) arranged in the stirring blades (304), the liquid outlet pipe (305) is connected with the hollow shaft (303), and a plurality of shunt pipes (306) are connected on the circumferential direction of the liquid outlet pipe (305).

5. The apparatus of claim 3, wherein, A plurality of liquid outlets (302) are arranged on the circumferential direction of the connecting position between the hollow shaft (303) and the rotating shaft (301), and the connecting position between adjacent liquid outlets (302) connects the hollow shaft (303) and the rotating shaft (301) as a same rotating shaft (301).

6. The apparatus of claim 5, wherein, The liquid outlet pipe (305) extends along the direction of the hollow shaft (303), a plurality of shunt pipes (306) are arranged along the blades of the stirring blades (304), and the end of the shunt pipe (306) is provided with a nozzle (307) penetrating to the outside of the blades of the stirring blades (304).

7. The apparatus of claim 1, wherein, The blade of the stirring blades (304) is a straight plate, and the length direction of the blade of the stirring blades (304) is parallel to the axial direction of the liquid outlet pipe (305). The pushing assembly further comprises a sliding rod (202) arranged between the fixed plate (201) and the cartridge (101), the sliding rod (202) supports the fixed plate (201) to form a spacing with the cartridge (101), the stroke of the pushing plate (205) in the spacing corresponds to the stroke of the piston (102) in the cartridge (101), and the sliding rod (202) is marked with a scale.

8. The apparatus of claim 7, wherein, The storage assembly further comprises a push rod (103) connected between the piston (102) and the push plate (205) through the cartridge (101).

9. The apparatus of claim 1, wherein, The storage assembly further comprises a liquid inlet pipe (104) arranged at the bottom of the cartridge (101), and a one-way valve (105) is arranged on the liquid inlet pipe (104).

10. The apparatus of claim 8, wherein, The push rod (103) and the slide rod (202) are respectively arranged with two rods, and are symmetrically arranged with respect to the screw rod (203).

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