A helical gas delivery system for a medicament

Abstract

The present application provides a kind of medicine helical gas conveying system, including conveying pipeline, further comprising: helical flow guide section, along the conveying direction of conveying pipeline, helical flow guide section is arranged at the upstream of the bending of conveying pipeline;Leak detection unit is arranged at the bending of conveying pipeline, for detecting whether there is gas leakage at the bending of conveying pipeline;Alarm unit is electrically connected with leak detection unit, for sending alarm information when there is gas leakage at the bending of conveying pipeline, by setting helical flow guide section, airflow can be guided to form rotating airflow, rotating airflow can also rotate when passing through the bending of conveying pipeline, which can reduce or avoid the problem of medicine particles accumulation inside the bending, by setting leak detection unit, the leak detection unit can be triggered when leakage occurs, so that the alarm unit alarms, and the staff can obtain the leakage condition of conveying pipeline through the alarm information of alarm device, to avoid staff inspection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material conveying, and particularly relates to a spiral gas conveying system of a medicament. BACKGROUND

[0002] In the manufacturing process of medicines, a medicament conveying system is needed to convey various medicaments according to a proportioning, and then manufacturing and processing is performed. Currently, common conveying methods of the medicament conveying include negative pressure pneumatic conveying. The negative pressure pneumatic conveying is a conveying method in which a vacuum pump is used to generate negative pressure, and a powder particle medicament uniformly mixed with air is conveyed through a pipeline by suction. This conveying method is mainly applied to powder particles. When the medicament is conveyed through the negative pressure conveying method, the granular medicament passes through the pipeline at a high speed and rubs against the pipeline wall. Especially when the direction is changed through a pipeline bend, the airflow passing through the bend will generate centrifugal force at the bend. Referring to Figure 1 , after the medicament of the granular device passes through the bend, the medicament rubs against the pipeline wall outside the bend, but the medicament is accumulated at the inside of the bend. After long-term use, the pipeline on one side is severely worn, and the pipeline on the other side is blocked due to the accumulation of the medicament. To solve the problem of severe wear of the pipeline, the thickness of the pipeline wall can be increased. Although this method can improve the wear resistance of the pipeline, the pipeline will still be worn and leaked after long-term use, and manual regular inspection is still needed. The current method for solving the problem of accumulation of the medicament at the bend is also to manually clean the pipeline regularly. The manual cleaning method must be stopped for operation, which affects production. SUMMARY

[0003] In view of the above problems, the present application provides a spiral gas conveying system of a medicament to at least partially solve the technical problems in the prior art.

[0004] The present application provides a spiral gas conveying system of a medicament, which comprises a conveying pipeline and further comprises:

[0005] a spiral flow guide section along the conveying direction of the conveying pipeline, the spiral flow guide section being arranged upstream of the bend of the conveying pipeline and on the inner wall of the conveying pipeline;

[0006] a leakage detection unit arranged at the bend of the conveying pipeline and used for detecting whether there is gas leakage at the bend of the conveying pipeline;

[0007] an alarm unit electrically connected with the leakage detection unit and used for sending an alarm information when there is gas leakage at the bend of the conveying pipeline.

[0008] Further, the leakage detection unit comprises a sleeve arranged at the bending portion of the conveying pipe, an air chamber formed between the sleeve and the outer wall of the conveying pipe, a first piston cavity arranged on the sleeve, a first piston arranged in the first piston cavity, and a first detection assembly for detecting the displacement of the first piston, one end of the first piston cavity is communicated with the air chamber through a first air passage, the other end is communicated with the outside through a second air passage, a third air passage is arranged on the first piston, a first elastic member is arranged between the first piston and the first piston cavity, the first elastic member is used for providing elastic force to the first piston in the direction close to the second air passage, the flow capacity of the third air passage is smaller than that of the second air passage, and the flow capacity of the third air passage is greater than that of the second air passage.

[0009] Further, the first detection assembly comprises a driving rod coaxially arranged on the first piston, a first rotating shaft rotatably arranged on the sleeve, a point light source arranged on the first rotating shaft, and a photosensitive plate arranged around the first rotating shaft, the driving rod is arranged vertically and drivingly connected with the first rotating shaft.

[0010] Further, the spiral flow guide section is a spiral flow guide protrusion arranged on the inner wall of the conveying pipe.

[0011] Or, the spiral flow guide section is a spiral flow guide groove arranged on the inner wall of the conveying pipe.

[0012] Further, the air flow detection unit is arranged on the conveying pipe, and the air flow detection unit is arranged downstream of the bending portion of the conveying pipe in the conveying direction of the conveying pipe, and is used for detecting whether a rotating air flow is formed in the conveying pipe.

[0013] Further, the air flow detection unit comprises a sliding member slidingly arranged on the inner wall of the conveying pipe in the circumferential direction, a flow guide plate arranged on the sliding member, and a second detection assembly for detecting the sliding state of the sliding member, and the flow guide plate is arranged close to the inner side of the bending portion of the conveying pipe.

[0014] Further, the cleaning assembly is arranged outside the conveying pipe and corresponds to the spiral flow guide section, the cleaning assembly comprises a sliding sleeve slidingly arranged on the conveying pipe, at least one pushing rod arranged at one end of the sliding sleeve, at least one mounting groove arranged on the outer wall of the conveying pipe, and an elastic plate member arranged in the mounting groove, the mounting groove is arranged in the conveying direction of the conveying pipe, at least one protruding portion is arranged on one side of the elastic plate member close to the sliding sleeve, a plurality of groove portions are uniformly and spacedly arranged on the inner wall of the sliding sleeve corresponding to the mounting groove, and the pushing rod is used for reciprocatingly driving the sliding sleeve to slide.

[0015] Further, the installation grooves are provided in plurality, and the plurality of installation grooves are uniformly spaced in the circumferential direction of the outer circumferential surface of the conveying pipe.

[0016] Further, the outer periphery of the conveying pipe is provided with at least one second piston cavity corresponding to the push rod, the second piston cavity is provided with a second piston, one end of the push rod is connected with the sliding sleeve, the other end is connected with the second piston, one end of the second piston cavity is communicated with the inside of the conveying pipe, and an electromagnetic valve is arranged between the second piston cavity and the conveying pipe, the electromagnetic valve is connected with the first detection assembly and the second detection assembly, and a second elastic member is further arranged between the push rod and the conveying pipe, and the second elastic member is used for providing the push rod with elastic force moving away from the end of the second piston cavity communicated with the conveying pipe.

[0017] Further, the electromagnetic valve is used for reciprocatingly opening and closing according to the detection information of the first detection assembly and the second detection assembly.

[0018] Beneficial effects

[0019] The application provides a spiral gas conveying system of a medicament, comprising a conveying pipe, and further comprising: a spiral flow guide section, which is arranged on the upstream of the bending part of the conveying pipe and on the inner side wall of the conveying pipe along the conveying direction of the conveying pipe; a leakage detection unit, which is arranged on the bending part of the conveying pipe and is used for detecting whether there is gas leakage at the bending part of the conveying pipe; and an alarm unit, which is electrically connected with the leakage detection unit and is used for sending alarm information when there is gas leakage at the bending part of the conveying pipe. By arranging the spiral flow guide section on the upstream of the bending part, the airflow passing through the bending part can be guided to form a rotating airflow, and the rotating airflow can rotate when passing through the bending part, so that the airflow can pass through the inner side of the bending part, and the problem of medicament particle accumulation on the inner side of the bending part can be reduced or avoided. By arranging the leakage detection unit on the bending part, the leakage detection unit can be triggered when the bending part is worn and leaks, and the alarm unit can alarm according to the detection result of the leakage detection unit, so that the work staff can obtain the leakage condition of the conveying pipe through the alarm information of the alarm device, and the work staff can be avoided from patrolling. BRIEF DESCRIPTION OF DRAWINGS

[0020] Other characteristics, objects and advantages of the application will become more apparent from the detailed description of non-restrictive embodiments, which is made with reference to the attached drawings.

[0021] Figure 1 Structure schematic view of the bending part of the medicament conveying pipe.

[0022] Figure 2A structure schematic view of a bending position of a conveying pipe in a medicine screw air feeding system provided by the present application.

[0023] Figure 3 A structure schematic view of a bending position of a conveying pipe in a medicine screw air feeding system provided by the present application. Figure 2 A structure schematic view of a bending position of a conveying pipe in a medicine screw air feeding system provided by the present application.

[0024] Figure 4 A structure schematic view of a bending position of a conveying pipe in a medicine screw air feeding system provided by the present application.

[0025] Figure 5 A structure schematic view of a bending position of a conveying pipe in a medicine screw air feeding system provided by the present application. Figure 4 A structure schematic view of a bending position of a conveying pipe in a medicine screw air feeding system provided by the present application.

[0026] Figure 6 A structure schematic view of a bending position of a conveying pipe in a medicine screw air feeding system provided by the present application.

[0027] Figure 7 A structure schematic view of a bending position of a conveying pipe in a medicine screw air feeding system provided by the present application.

[0028] Figure 8 A structure schematic view of a bending position of a conveying pipe in a medicine screw air feeding system provided by the present application.

[0029] Figure 9 A structure schematic view of a bending position of a conveying pipe in a medicine screw air feeding system provided by the present application.

[0030] Figure 10 A structure schematic view of a bending position of a conveying pipe in a medicine screw air feeding system provided by the present application. DETAILED DESCRIPTION

[0031] The present application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are intended to be merely illustrative of the present application and not in limitation thereof. It should also be noted that only parts pertinent to the present application are shown in the drawings for the purpose of brevity.

[0032] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and embodiments.

[0033] Embodiment One

[0034] It should be noted that in the process of negative pressure pneumatic conveying, negative pressure can be generated in the conveying pipeline, and the negative pressure suction airflow flows into the conveying pipeline and is conveyed together with the powder medicine airflow in the conveying pipeline, so as to achieve the conveying purpose, referring to Figure 1 Wherein the outer side of the conveying pipeline bend in the text is 1a in the figure, and the inner side is 1b in the figure, it can be understood that when the airflow flows through the bend, the airflow carrying the powder medicine particles will deviate to the outer side of the bend under the action of centrifugal force, so the airflow velocity of the outer side of the bend is very large, and the wear at this place is more serious, on the contrary, the airflow velocity of the inner side of the bend is small, and the powder particles are easy to accumulate at this place, so that the medicine is easy to be hardened at this place, which will block the pipeline after a long time, affecting the conveying effect, for the above problems, referring to Figure 2 、 Figure 3 The present application provides a spiral air conveying system for medicine, as a specific embodiment, the system comprises a conveying pipeline 1, further comprising:

[0035] A spiral flow guide section 2 along the conveying direction of the conveying pipeline 1, the spiral flow guide section 3 is arranged upstream of the bend of the conveying pipeline and on the inner side wall of the conveying pipeline;

[0036] A leakage detection unit 3 arranged at the bend of the conveying pipeline for detecting whether there is gas leakage at the bend of the conveying pipeline;

[0037] An alarm unit 4 electrically connected with the leakage detection unit 3 for issuing alarm information when there is gas leakage at the bend of the conveying pipeline.

[0038] Specifically, by arranging the spiral flow guide section 2 upstream of the bend, the airflow passing through this place can be guided to form a rotating airflow, and the rotating airflow can also rotate when passing through the bend of the conveying pipeline, so that the airflow can pass through the inner side of the bend, and the problem of accumulation of medicine particles on the inner side of the bend can be reduced or avoided, by arranging the leakage detection unit 3 at the bend, the leakage detection unit 3 can be triggered when the bend is worn and leaks, and the alarm unit 4 can alarm according to the detection result of the leakage detection unit 3, so that the worker can obtain the leakage condition of the conveying pipeline through the alarm information of the alarm device, avoiding the worker to inspect; wherein the alarm unit 4 can include but is not limited to any one or more of sound alarm and light alarm, and the specific structure of the leakage detection unit 3 and its working principle are described below.

[0039] Further, as a specific embodiment, referring to Figure 3The leakage detection unit 3 comprises a sleeve 31 sleeved on the bending part of the conveying pipeline, an air chamber 32 formed between the sleeve 31 and the outer wall of the conveying pipeline, a first piston cavity 33 arranged on the sleeve 31, a first piston 330 arranged in the first piston cavity 33, and a first detection assembly 34 for detecting the displacement of the first piston 330. One end of the first piston cavity is communicated with the air chamber 32 through a first air passage 332, and the other end is communicated with the outside through a second air passage 333. A third air passage 3301 is arranged on the first piston. A first elastic member 334 is arranged between the first piston and the first piston cavity, and the first elastic member is used to provide an elastic force to the first piston in the direction close to the second air passage 333. The flow capacity of the third air passage is smaller than that of the second air passage, and the flow capacity of the third air passage is smaller than that of the first air passage.

[0040] Specifically, referring to Figure 3 , as a specific embodiment, the first piston cavity is arranged on the side wall of the sleeve 31, the bottom of the cavity is communicated with the air chamber through the first air passage 332, the first elastic member is a compression spring arranged between the bottom of the first piston cavity and the first piston, and the working principle of the leakage detection assembly is as follows: Figure 3 is a state diagram of the leakage detection assembly when the conveying pipeline does not leak. Under the action of the elastic force of the first elastic member, the first piston is abutted against the end plug. When the outer side of the bending part of the conveying pipeline leaks, the air chamber 32 is communicated with the inside of the conveying pipeline, so that negative pressure is generated in the air chamber 32, thereby generating negative pressure at the bottom of the first piston cavity communicated with the air chamber. At the same time, the gas in the outside can enter the bottom of the first piston cavity through the second air passage and the third air passage. Since the flow capacity of the second air passage is smaller than that of the first air passage, a pressure difference can be generated on both sides of the piston. Under the action of the pressure difference, the first piston is pushed to move and press the first elastic member, and the greater the leakage at the bending part of the conveying pipeline, the greater the negative pressure generated in the air chamber, and the greater the displacement of the first piston moving against the elastic force of the first elastic member. At this time, the displacement of the first piston is detected through the first detection assembly 34, so that whether the bending part of the conveying pipeline leaks and the size of the leakage can be obtained. When leakage occurs, the alarm device can send an alarm information in time.

[0041] Further, continuing to refer to Figure 3 , as an implementable embodiment, the specific structure of the first detection assembly 34 is as follows: the first detection assembly 34 comprises a driving rod 341 coaxially arranged on the first piston, a first rotating shaft 342 rotatably arranged on the sleeve 31, a point light source 343 arranged on the first rotating shaft 342, and a photosensitive plate 344 arranged around the first rotating shaft 342. The driving rod 341 is vertically arranged and drivingly connected with the first rotating shaft 342.

[0042] Specifically, referring to Figure 3 , the end of the first rotating shaft 342 is provided with a gear (not shown in the figure), and the driving rod 341 is provided with a rack (not shown in the figure) matched with the gear core. When the first piston is displaced under the action of the pressure difference, the driving rod 341 is driven to move axially, and the driving rod moves to drive the first rotating shaft 342 to rotate around the axis by the matching of the rack and the gear. When the first rotating shaft rotates, the point light source 343 is rotated, so that the position of the point light source irradiated on the photosensitive plate 344 changes. By obtaining the displacement amount of the light spot position on the photosensitive plate 344, the angle of rotation of the first rotating shaft 342 can be obtained, and the displacement amount of the first piston can be obtained according to the transmission ratio of the rack and the gear.

[0043] Further, as a specific embodiment, referring to Figure 2 、 Figure 7 , the spiral flow guiding section 2 is formed in the following manner: a spiral flow guiding protrusion is arranged on the inner side wall of the conveying pipeline, and the airflow can be guided by the spiral flow guiding protrusion when passing through the spiral flow guiding protrusion to form a spiral airflow. The spiral flow guiding section 2 is a spiral flow guiding protrusion arranged on the inner side wall of the conveying pipeline.

[0044] It can be understood that, as another implementable embodiment, the spiral flow guiding section 2 can also be formed by opening a spiral flow guiding groove on the inner side wall of the conveying pipeline. The spiral flow guiding groove can also achieve the guiding effect on the airflow, so that the airflow generates a rotating airflow after passing through the spiral flow guiding section.

[0045] Embodiment two

[0046] The present application can reduce the effect of aggregate accumulation at the bending part of the conveying pipeline by arranging a spiral flow guiding section upstream of the bending part of the conveying pipeline, which can generate a spiral airflow. It can be understood that although the spiral flow guiding section can guide the airflow, the sidewall of the spiral protrusion or the spiral groove will be attached with a drug after a long time of use. When the attached drug is thick, not only the guiding effect will be lost, but also the risk of pipeline blockage will be increased. In order to avoid this phenomenon, as a further improvement, the difference between the present embodiment and embodiment one is that the system further comprises an airflow detection unit 5 arranged on the conveying pipeline 1. Along the conveying direction of the conveying pipeline 1, the airflow detection unit is arranged downstream of the bending part of the conveying pipeline, which is used to detect whether a rotating airflow is formed in the conveying pipeline. By arranging the airflow detection unit 5 downstream of the bending part of the conveying pipeline, when the airflow in the conveying pipeline flows to the airflow detection unit through the spiral flow guiding section, the airflow detection unit detects whether the airflow is a rotating airflow, and then judges the guiding effect of the spiral flow guiding section on the airflow.

[0047] Further, as a specific embodiment, the specific structure of the airflow detection unit 5 is as follows:Figure 2 、 Figures 4-6 The airflow detection unit 5 comprises a sliding piece 51 slidingly arranged on the inner side wall of the conveying pipe along the circumferential direction, a flow guide plate 52 arranged on the sliding piece 51, and a second detection assembly 53 for detecting the sliding state of the sliding piece 51. The flow guide plate 52 is arranged close to the inner side of the bending part of the conveying pipe.

[0048] Specifically, it can be understood that when the airflow passes through the spiral flow guide section, the airflow forms a spiral airflow. When the spiral airflow reaches the airflow detection unit through the bending part, the spiral airflow still has a rotating shape. The rotating airflow can push the flow guide plate 52, thereby driving the sliding piece 51 to deflect along the circumferential direction. The faster the rotating speed of the rotating airflow formed through the spiral flow guide section, the greater the pushing force of the rotating airflow on the flow guide plate 52 when it reaches the airflow detection unit, and the greater the deflection force of the sliding piece 51. At this time, the deflection and sliding state of the sliding piece 51 is detected by the second detection assembly, so as to obtain the rotating shape of the airflow when it reaches the airflow detection unit, and in turn obtain the flow guide effect of the spiral flow guide section. According to the flow guide effect, the degree of the spiral flow guide section being attached with the medicament is determined, and the spiral flow guide section is cleaned according to the degree of the medicament being attached.

[0049] Further, as a specific embodiment, reference is made to Figures 4-6As an implementation, the specific structure of the airflow detection unit is as follows: the airflow detection unit 5 comprises a cylindrical connecting sleeve 50, the two ends of the connecting sleeve are connected to the conveying pipeline 1 through flanges, a sliding member 51 is a cylindrical sleeve body rotatably arranged in the connecting sleeve 50, and the outer circumferential surface of the sliding member 51 of the cylindrical sleeve body is in sliding sealing cooperation with the inner circumferential surface of the connecting sleeve 50, a second sleeve body 54 is further sleeved outside the connecting sleeve 50, a guide through slot 501 is designed on the side wall of the connecting sleeve 50 in the circumferential direction, a strip-shaped blind groove 502 is arranged at the top of the guide through slot, an arc-shaped sliding block 503 is arranged in the strip-shaped blind groove 502 in a guided sliding manner, the arc-shaped sliding block is connected with the sliding member 51, a gear rack is arranged on the outer circumferential surface of the arc-shaped sliding block, the arc-shaped sliding block is drivingly connected with the inner circumferential surface of the second sleeve body 54 through an intermediate gear 504, a first air channel 510 is arranged on the side wall of the sliding member 51 of the cylindrical sleeve body in the radial direction thereof, a second air channel 501 is arranged on the side wall of the connecting sleeve 50 and staggered with the first air channel, a second detection assembly 53 comprises an arc-shaped cylinder body 531 arranged on the connecting sleeve 50 and coaxially arranged with the connecting sleeve, a piston block 532 is arranged in the arc-shaped cylinder body 531, an arc-shaped rigid rod 533 is designed on the piston block, the rigid rod 533 is connected with the second sleeve body 54, two compression springs 534 are sleeved on the outer periphery of the rigid rod 533 and abut against the piston block and the end portion of the arc-shaped cylinder body respectively, a first air vent 5310 is arranged at the end of the arc-shaped cylinder body away from the rigid rod and is communicated with the second air channel 501, a first flow channel 5321 is arranged on the piston block, a second flow channel 5322 is arranged at the other end of the arc-shaped cylinder body and is communicated with the atmosphere, the flow area of the second flow channel is greater than that of the first flow channel, the flow area of the first flow channel is smaller than that of the first air vent, a detection sensor 535 for detecting the movement frequency of the piston block is further arranged on the side wall of the arc-shaped cylinder body, and the detection sensor can be any one of a photoelectric switch, a proximity switch and a laser sensor.

[0050] Specifically, the working principle of the airflow detection unit 5 is as follows: Figure 5In the state diagram of the air flow detection unit 5 when there is no air flow through the conveying pipeline, at this time, one end of the arc-shaped sliding block is limited against one end of the strip-shaped blind groove 502 under the elastic force of the compression spring 534, at this time, the guide plate 52 is arranged on the inner side close to the bending part of the conveying pipeline, the first air passage and the second air passage are staggered, when conveying the material, under the action of negative pressure, conveying air flow can be formed in the conveying pipeline, the powdery granular medicament is conveyed together with the conveying air flow, when the air flow passes through the spiral guide section, the air flow is guided to form a spiral air flow, after the spiral air flow passes through the elbow, the rotating air flow 8 reaches the connecting sleeve of the air flow detection unit 5, so that the guide plate 52 can be pushed by the rotating air flow, so that the guide plate drives the sliding member 51 to rotate in the rotating direction of the rotating air flow 8, so that the second sleeve body 54 is driven to rotate in the direction opposite to the rotating direction of the rotating air flow by the intermediate gear, so as to exert force on the arc-shaped rigid rod 533 to pull the piston block to move and extrude the compression spring 534, at this time, the piston block can pass through the detection sensor 535, with the rotation of the sliding member 51, the first air passage and the second air passage are coincided, at this time, the inside of the arc-shaped cylinder body is communicated with the inside of the conveying channel through the first air port 5310, so that negative pressure can be generated in the arc-shaped cylinder body, at this time, external air flow can enter the other end of the arc-shaped cylinder body through the second flow passage and flow into the other side of the arc-shaped cylinder body through the first flow passage, because the flow area of the first flow passage is smaller than that of the second flow passage, so that a pressure difference can be formed at both ends of the piston block, under the action of the pressure difference, the piston block can be pushed to move, so as to pull the second sleeve body to move through the arc-shaped rigid rod, the second sleeve body drives the sliding member 51 to move in the direction opposite to the spiral air flow through the intermediate gear, so that the first air passage and the second air passage are staggered again, so that the arc-shaped cylinder body cannot be communicated with the conveying channel, under the communication of the first flow passage, the arc-shaped cylinder body is located at the pressure balance on both sides of the piston block, at this time, there is no longer a pressure difference on both sides of the piston block, at this time, the guide plate 52 is pushed again to drive the sliding member 51 to rotate under the action of the spiral air flow, so as to repeat the above-mentioned action, and the faster the rotating speed of the rotating air flow is, the faster the frequency of the reciprocating motion of the piston block is, when the guide grooves or guide protrusions of the spiral guide section are bonded with medicament particles to make the guide effect poor, the rotating speed of the rotating air flow reaching the air flow detection unit 5 is lower, therefore, the frequency of the reciprocating motion of the piston block obtained by the detection sensor can obtain the guide effect of the spiral guide section, and the blockage of the spiral guide section can be judged in sequence, when the spiral guide section is blocked, the cleaning assembly can be controlled to clean in time.

[0051] Further, in order to ensure the sensitivity of the air flow detection unit, as a specific embodiment, the surface area of the air flow facing surface of the guide plate 52 is S1, the angle between the guide plate surface and the axis of the connecting sleeve 50 is a, the transmission ratio between the arc-shaped sliding block 503 and the second sleeve body is i1, the elastic coefficient of the compression spring 534 is K1, and the adjustment coefficient is g, the value range is 0.24-0.55, then the following relationship is: K1= g (S1*cos a / i1) 1 / 2 , the flow area of the first air vent 5310 is g1, the flow area of the first flow channel 5321 is g2, the flow area of the second flow channel 5322 is g3, the pressure difference between the air pressure in the conveying channel and the atmospheric pressure is P0, the relationship coefficient is g1, and the value range is 0.47-0.53, then the following relationship is: g1=(1.3-1.7)g2, g1=(0.4-0.6)g3, the cross-sectional area of the arc-shaped cylinder is S2, and g1*P0*S2* p

(g2-g1)(g1+g3) / (g2+g1)(g1-g3)

[0052] Further, as a specific embodiment, referring to Figure 2 , Figures 7-9 , the system further comprises a cleaning assembly 6 arranged outside the conveying pipeline and corresponding to the spiral guide section 2, the cleaning assembly 6 comprises a sliding sleeve 61 slidably arranged on the conveying pipeline, at least one push rod 62 arranged at one end of the sliding sleeve, at least one mounting groove 63 arranged on the outer side wall of the conveying pipeline, and an elastic plate member 64 arranged in the mounting groove 63, the mounting groove 63 is arranged along the conveying direction of the conveying pipeline, and at least one protruding portion 640 is arranged on the side of the elastic plate member close to the sliding sleeve 61, a plurality of groove portions 610 are uniformly and spacedly arranged on the inner side wall of the sliding sleeve 61 corresponding to the mounting groove, and the push rod 62 is used to reciprocatingly drive the sliding sleeve to slide.

[0053] Specifically, referring to Figure 9 , the control device 7 is connected with the first detection assembly and the second detection assembly, and is used for acquiring the leakage condition of the curved part of the conveying pipeline and the attachment condition of the medicament on the spiral guide section, when the spiral guide section is seriously blocked, the control device can control the push rod 62 to push the sliding sleeve 61 to move axially, so that the groove portions of the sliding sleeve are in turn elastically matched with the protruding portions 640 on the elastic plate, so as to reciprocatingly press the elastic plate and make the elastic plate vibrate, drive the conveying pipeline to vibrate, and make the medicament attached to the spiral guide section fall off under the action of vibration, so as to achieve the purpose of cleaning, and in the working process of the push rod, the control device simultaneously acquires the detection value of the second detection assembly to acquire the cleaning condition of the spiral guide section, and the drive rod stops driving when the cleaning meets the requirements.

[0054] Further, as a preferred embodiment, the installation groove 63 is provided with a plurality of installation grooves 63, and the plurality of installation grooves 63 are uniformly arranged on the outer circumferential surface of the conveying pipe in the circumferential direction. Through this arrangement, a plurality of elastic plates 64 can be arranged on the outer circumferential surface of the conveying pipe, so that vibration can be uniformly generated on the outer circumferential surface of the conveying pipe when the push rod 62 pushes the sliding sleeve to move, thereby improving the cleaning effect.

[0055] Further, the periphery of the conveying pipe 1 is provided with at least one second piston cavity 620 corresponding to the push rod, the second piston cavity 620 is provided with a second piston 621, one end of the push rod 62 is connected with the sliding sleeve, the other end is connected with the second piston, one end of the second piston cavity 620 is communicated with the inside of the conveying pipe, and the second piston cavity and the conveying pipe are provided with a solenoid valve 65, the solenoid valve is connected with the first detection assembly 34 and the second detection assembly 53, the push rod 62 and the conveying pipe are further provided with a second elastic member 622, the second elastic member is used to provide the push rod with elastic force moving away from the end of the second piston cavity 620 communicated with the conveying pipe.

[0056] Further, the solenoid valve 65 is used to reciprocate according to the detection information of the first detection assembly 34 and the second detection assembly 53.

[0057] Reference Figure 2 、 Figure 7 As a specific embodiment, the specific structure of the cleaning assembly is that an annular guide disc 1c is arranged on the outer side wall of the conveying pipe on one side of the sliding sleeve 61, the sliding sleeve 61 is provided with a guide plate 611 guided matched with the annular guide plate 1c, the end of the guide rod is provided with a limiting plate 612, the second elastic member 622 is a second compression spring arranged between the limiting plate and the annular guide disc 1c, the side of the sliding sleeve away from the annular guide disc is provided with a plurality of second piston cavities 620, one end of the second piston cavity 620 away from the annular guide disc is communicated with the inside of the conveying pipe, the solenoid valve 65 is arranged between the second piston cavity and the conveying pipe, the two ends of the second piston cavity are also communicated with the atmosphere through a connecting air channel, and the flow area of the connecting air channel is smaller than the flow area of the connecting pipeline between the second piston cavity and the conveying pipe. Specifically, refer to Figure 7In normal state, the end of the sliding sleeve is pressed against the annular guide disc 1c by the elastic force of the second compression spring 622. When the cleaning assembly is needed to work, the control device controls the electromagnetic valve 65 to open, so that the second piston cavity 620 is in communication with the inside of the delivery pipe, and the second piston cavity has pressure difference between the two sides of the second piston. The second piston is driven to move by the pressure difference, so that the push rod pulls the sliding sleeve to move, and the sliding sleeve moves relative to the elastic plate 64 to produce high-frequency vibration. Then the electromagnetic valve is closed. After the electromagnetic valve is closed, the air pressure difference between the two sides of the second piston cavity gradually becomes equal, so that the sliding sleeve is pulled back to the original position by the elastic force of the second compression spring. The sliding sleeve and the elastic plate move relative to each other again to produce high-frequency vibration. In this way, the spiral flow guide section is cleaned.

[0058] Further, as another embodiment, with reference to Figure 10 The structure of another embodiment of the cleaning assembly is shown in the schematic view. The difference between this embodiment and the previous embodiment is that the end of the second piston cavity close to the annular guide disc 1c is designed with a first channel 6201 in communication with the atmosphere, the second piston 621 is provided with a second channel 6210, the side of the second piston away from the push rod is coaxially provided with a second rod 623, the end of the second piston cavity 620 is provided with a cylinder 620a for guiding the second rod 623, the side wall of the cylinder is provided with an annular groove 6240, the bottom of the annular groove is provided with a third channel 624 in communication with the delivery pipe; along the axial direction of the second rod, the side wall of the second rod is provided with a first through hole 6231 and a second through hole 6233 at intervals, and the inside of the second rod is provided with a communication channel 6232 in communication with the first through hole and the second through hole. The flow area of the second channel 6210 is smaller than the flow area of the first channel, and the flow area of the second channel is smaller than the flow area of the third channel. With reference to Figure 10As shown in FIG. 1, the cleaning assembly 6 is in the initial state, the second through hole 6233 is at least partially overlapped with the annular groove body 6240, the sliding sleeve 61 is away from the second piston cavity, and the second compression spring is in the elastic state. When the control solenoid valve 65 is opened, a negative pressure is formed at the end of the piston cavity away from the sliding sleeve, and the second piston is pushed to move, thereby pulling the sliding sleeve to move and compressing the second compression spring. With the movement of the second piston, the second rod is driven to move, and the second through hole is gradually separated from the annular groove body 6240, so that the second through hole is disconnected with the delivery channel. External gas can enter the second piston cavity through the second channel, and the pressure difference between the two sides of the second piston is reduced. At this time, the pressure difference between the two sides of the second piston is less than the elastic force of the second compression spring, so that the sliding sleeve 61 is pushed to move in the opposite direction under the action of the elastic force of the second compression spring, and the second piston is pulled to move, so that the second through hole is overlapped with the annular groove body again. Thus, the second piston cavity is connected with the delivery channel again, and the pressure difference between the two sides of the second piston is greater than the elastic force of the second compression spring, so that the second piston is driven to move away from the sliding sleeve again. In this way, the sliding sleeve is pulled to move back and forth, and the use life of the solenoid valve is improved without controlling the solenoid valve to open back and forth.

[0059] Further, as a specific embodiment, reference is made to Figure 8 As shown in FIG. 1, the cleaning assembly 6 is in the initial state, the second through hole 6233 is at least partially overlapped with the annular groove body 6240, the sliding sleeve 61 is away from the second piston cavity, and the second compression spring is in the elastic state. When the control solenoid valve 65 is opened, a negative pressure is formed at the end of the piston cavity away from the sliding sleeve, and the second piston is pushed to move, thereby pulling the sliding sleeve to move and compressing the second compression spring. With the movement of the second piston, the second rod is driven to move, and the second through hole is gradually separated from the annular groove body 6240, so that the second through hole is disconnected with the delivery channel. External gas can enter the second piston cavity through the second channel, and the pressure difference between the two sides of the second piston is reduced. At this time, the pressure difference between the two sides of the second piston is less than the elastic force of the second compression spring, so that the sliding sleeve 61 is pushed to move in the opposite direction under the action of the elastic force of the second compression spring, and the second piston is pulled to move, so that the second through hole is overlapped with the annular groove body again. Thus, the second piston cavity is connected with the delivery channel again, and the pressure difference between the two sides of the second piston is greater than the elastic force of the second compression spring, so that the second piston is driven to move away from the sliding sleeve again. In this way, the sliding sleeve is pulled to move back and forth, and the use life of the solenoid valve is improved without controlling the solenoid valve to open back and forth.

[0060] The above description is only the preferred embodiment of the present application and the explanation of the technical principles. It should be understood by those skilled in the art that the scope of the protection of the present application is not limited to the technical solutions formed by the specific combinations of the above technical features. It should also cover other technical solutions formed by the combinations of the above technical features or their equivalent features without departing from the concept of the present application. For example, the technical solutions formed by the mutual replacement of the above features and the technical features with similar functions disclosed (but not limited to) in the present application.

Claims

1. A helical gas delivery system for a medicament comprising a delivery duct (1), characterised in that, Also comprising: a spiral flow guide section (2) arranged upstream of the bend of the conveying pipe (1) and on the inner side wall of the conveying pipe (1) along the conveying direction of the conveying pipe (1); a leakage detection unit (3) arranged at the bend of the conveying pipe (1) for detecting whether there is gas leakage at the bend of the conveying pipe (1); an alarm unit (4) electrically connected with the leakage detection unit (3) for sending an alarm information when there is gas leakage at the bend of the conveying pipe (1); and further comprising a gas flow detection unit (5) arranged at the conveying pipe (1) and downstream of the bend of the conveying pipe (1) along the conveying direction of the conveying pipe (1) for detecting whether a rotating gas flow is formed in the conveying pipe (1), the gas flow detection unit (5) comprising a sliding member (51) slidingly arranged on the inner side wall of the conveying pipe (1) along the circumferential direction, a flow guide plate (52) arranged on the sliding member (51) and a second detection assembly (53) for detecting the sliding state of the sliding member (51), the flow guide plate (52) being arranged close to the inner side of the bend of the conveying pipe (1). The air flow detection unit (5) comprises a cylindrical connecting sleeve (50) connected to the conveying pipeline (1) through flanges at both ends, wherein the sliding member (51) is a cylindrical sleeve body rotatably arranged in the connecting sleeve (50), and the outer peripheral surface of the sliding member (51) of the cylindrical sleeve body is in sliding sealing cooperation with the inner peripheral surface of the connecting sleeve (50), and a second sleeve body (54) is further sleeved outside the connecting sleeve (50), a guide through slot (501) is designed on the side wall of the connecting sleeve (50) in the circumferential direction, a strip-shaped blind groove (502) is arranged at the top of the guide through slot (501), an arc-shaped sliding block (503) is arranged in the strip-shaped blind groove (502) in a guided sliding manner, the arc-shaped sliding block (503) is connected with the sliding member (51), a rack is arranged on the outer peripheral surface of the arc-shaped sliding block (503), the arc-shaped sliding block (503) is drivingly connected with the inner peripheral surface of the second sleeve body (54) through an intermediate gear (504), a first channel (510) is arranged on the side wall of the sliding member (51) in the radial direction thereof, the guide through slot (501) is arranged on the side wall of the connecting sleeve (50) in an interleaved manner with the first channel (510), and the second detection assembly (53) comprises an arc-shaped cylinder body (531) arranged on the connecting sleeve (50) and coaxially arranged with the connecting sleeve, a piston block (532) is arranged in the arc-shaped cylinder body (531), an arc-shaped rigid rod (533) is designed on the piston block, the rigid rod (533) is connected with the second sleeve body (54), a compression spring (534) is sleeved on the outer periphery of the rigid rod (533) and abuts against the piston block and the end portion of the arc-shaped cylinder body, a first air vent (5310) in communication with the guide through slot (501) is arranged at the end of the arc-shaped cylinder body away from the rigid rod, a first flow channel (5321) is arranged on the piston block, a second flow channel (5322) in communication with the atmosphere is arranged at the other end of the arc-shaped cylinder body, and a detection sensor (535) for detecting the movement frequency of the piston block is further arranged on the side wall of the arc-shaped cylinder body. Further comprising a cleaning assembly (6) arranged outside the conveying pipeline and corresponding to the spiral flow guide section (2), the cleaning assembly (6) comprises a sliding sleeve (61) slidably sleeved on the conveying pipeline, at least one push rod (62) arranged at one end of the sliding sleeve, at least one mounting groove (63) arranged on the outer side wall of the conveying pipeline, and an elastic plate member (64) arranged in the mounting groove (63), the mounting groove (63) is arranged along the conveying direction of the conveying pipeline, at least one protruding portion (640) is arranged on the side of the elastic plate member close to the sliding sleeve (61), a plurality of recessed portions (610) are uniformly and spacedly arranged on the corresponding regions of the inner side wall of the sliding sleeve (61) with the mounting groove, and the push rod (62) is used for reciprocally driving the sliding sleeve to slide.

2. A medicament screw gas delivery system according to claim 1, wherein, The leakage detection unit (3) comprises a sleeve (31) sleeved on the bending part of the conveying pipeline, an air chamber (32) formed between the sleeve (31) and the outer side wall of the conveying pipeline, a first piston cavity (33) arranged on the sleeve, a first piston (330) arranged in the first piston cavity (33), and a first detection assembly (34) for detecting the displacement of the first piston (330). One end of the first piston cavity is communicated with the air chamber (32) through a first air passage (332), and the other end is communicated with the outside through a second air passage (333). A third air passage (3301) is arranged on the first piston. A first elastic member (334) is arranged between the first piston and the first piston cavity, and the first elastic member is used to provide the first piston with an elastic force in the direction close to the second air passage (333). The flow capacity of the third air passage is less than that of the second air passage, and the flow capacity of the third air passage is greater than that of the second air passage.

3. A medicament screw gas delivery system according to claim 2, wherein, The first detection assembly (34) comprises a driving rod (341) coaxially arranged on the first piston, a first rotating shaft (342) rotationally arranged on the sleeve, a point light source (343) arranged on the first rotating shaft (342), and a photosensitive plate (344) arranged around the first rotating shaft (342). The driving rod (341) is arranged vertically and drivingly connected with the first rotating shaft (342).

4. A medicament screw gas delivery system according to claim 2, wherein, The spiral flow guide section (2) is a spiral flow guide protrusion arranged on the inner side wall of the conveying pipeline. Or, the spiral flow guide section (2) is a spiral flow guide groove arranged on the inner side wall of the conveying pipeline.

5. A medicament screw gas delivery system according to claim 3, wherein, The mounting groove (63) is arranged in plurality, and the plurality of mounting grooves (63) are uniformly and circumferentially spaced on the outer circumferential surface of the conveying pipeline.

6. A medicament screw gas delivery system according to claim 5, wherein, The outer periphery of the conveying pipeline (1) is provided with at least one second piston cavity (620) corresponding to the pushing rod. The second piston cavity (620) is provided with a second piston (621). One end of the pushing rod (62) is connected with the sliding sleeve, and the other end is connected with the second piston. One end of the second piston cavity (620) is communicated with the inside of the conveying pipeline, and an electromagnetic valve (65) is arranged between the second piston cavity and the conveying pipeline. The electromagnetic valve is connected with the first detection assembly (34) and the second detection assembly (53). A second elastic member (622) is further arranged between the pushing rod (62) and the conveying pipeline. The second elastic member is used to provide the pushing rod with an elastic force moving away from the end of the second piston cavity (620) communicated with the conveying pipeline.

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