Easy-to-observe analysis titration device for drug inspection

Abstract

The invention discloses a convenient-to-observe analysis titration device for drug inspection, which can be applied to the technical field of scientific research institutions and drug inspection, and comprises a production enterprise quality control mechanism. The auxiliary mechanism comprises a placement table and a controller, a liquid storage tank is mounted at the top of the inner wall of the placement table, an electric push rod is mounted at the position, close to the bottom, of one side of the liquid storage tank, an electric valve is mounted at the liquid outlet end of the liquid storage tank, a partition plate is fixed into a flow guide pipe, and a sensor is mounted on the side, close to a rectangular plate, of a tank body. According to the analytical titration device disclosed by the invention, by arranging the auxiliary mechanism, liquid left in the conical flask after medicine titration can be treated, so that the workload of workers is reduced, and the risk that the workers are injured when collecting the liquid in the conical flask is also avoided; the use effect of the convenient-to-observe device for medicine inspection and titrimetric analysis is improved, environmental protection is facilitated, and meanwhile, the use efficiency of the convenient-to-observe device for medicine inspection and titrimetric analysis is also improved.

Description

Technical Field

[0001] The present invention relates to the technical field of drug inspection and testing of drug raw materials and preparations using a volumetric method, in particular to an analytical titration device for drug inspection that is easy to observe. Background Art

[0002] Drug inspection is a comprehensive test and evaluation of drug quality to ensure the safety, effectiveness and quality controllability of drugs. Common drug inspection methods include volumetric method (analytical titration method), microbiological testing method, chromatography and spectroscopy.

[0003] In the existing technology, although the quality and safety of drugs can be tested during the actual operation of conventional volumetric drug testing, it does not have the function of treating the liquid remaining in the conical flask after the drug testing. That is, the liquid remaining in the conical flask after the drug testing needs to be collected by the staff and transferred to a waste liquid bottle specially used for treating such liquids, and treated with weak alkali neutralization or other methods. At the same time, if the liquid is confirmed to be acidic, alkaline or contains heavy metals after analysis, the staff may be injured when collecting it, which not only reduces the use effect of the analytical titration device for drug testing that is easy to observe, but also reduces the use efficiency of the analytical titration device for drug testing that is easy to observe.

[0004] Therefore, we propose an analytical titration device for drug testing that is easy to observe, so as to solve the problems raised in the above background technology. Summary of the Invention

[0005] The object of the present invention is to provide an analytical titration device for drug testing (volumetric method) that is easy to observe, so as to solve the problem that the existing titration device for drug testing that is easy to observe does not have the function of processing the liquid remaining in the conical flask after the drug testing. That is, the liquid remaining in the conical flask after the drug testing needs to be collected and transported by staff to a place specially used for processing such liquid, which increases the workload of the staff. At the same time, if the liquid is confirmed to be acidic, alkaline or contains heavy metals after analysis, there is a risk of injury to the staff during collection, which not only reduces the use effect of the analytical titration device for drug testing that is easy to observe, but also reduces the use efficiency of the analytical titration device for drug testing that is easy to observe.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an analytical titration device for drug testing that is easy to observe, comprising a titration mechanism, wherein the titration mechanism is provided with an auxiliary mechanism; The top of the box is provided with a lifting plate, and the lifting plate is connected with a lifting plate to the end of the lifting plate, and the lifting plate is connected with abutment surface layer 36, the lifting plate being connected with the lifting plate of the lifting plate bead.

[0007] Preferably, the bottom of the porous plate is in contact with the top of the adsorption layer, the interior of the circular tube is connected to the interior of the treatment tank, the bottom end of the clamping rod is movably sleeved inside the circular tube, one end of the telescopic end of the electric push rod is installed with the top of the clamping rod, and the detection end of the sensor extends to the interior of the treatment tank.

[0008] Preferably, the liquid inlet end of the guide tube is connected to the liquid outlet end of the connecting tube, the guide shell is located inside the treatment tank, the liquid outlet end of the guide tube is fixedly sleeved inside the treatment tank near the slot position, and the electric push rod, sensor and electric valve are all electrically connected to the controller.

[0009] Preferably, a perforated plate is installed at the opening of the placement table, the controller is installed on the front surface of the perforated plate, and a tube cover is placed at the liquid inlet end of the funnel tube.

[0010] Preferably, the titration mechanism includes a workbench, the bottom of the workbench is fixed to the top of the placement table, a long rod is fixed to the top of the workbench near the edge, and a fixing frame is fixed to the outer surface of the long rod by squeezing through a first hand-tightening screw.

[0011] Preferably, a double-hole block is fixedly sleeved on the outer surface of the fixing bracket near one end, an L-shaped block is squeezed and fixed inside one of the through holes of the double-hole block by a second hand-tightened screw, and fixing clips are fixed to one end of the fixing bracket and the front surface of the L-shaped block.

[0012] Preferably, the inner wall arc surfaces of the two fixing clamps are bonded with anti-slip pads, a hollow block is fixed on the top of the workbench near the edge, a conical flask is arranged inside the hollow block, the bottom of the conical flask is in contact with the top of the workbench, and two symmetrical limit blocks are installed on the top of the hollow block.

[0013] Preferably, the conical flask is located between two limit blocks, a rectangular groove is provided on the top of the hollow block, an L-shaped frame with a hole is squeezed and fixed inside the rectangular groove by a third hand-tightened screw, an air guide tube is fixedly sleeved inside the L-shaped frame with a hole, and a one-way valve is installed at the air inlet end of the air guide tube.

[0014] Preferably, a placement rack is installed on the top of the workbench, a gas cylinder is arranged inside the placement rack, a support rack is fixed to the bottom of the workbench, a gas pipe is installed at the gas outlet end of the gas cylinder, and the gas pipe is located in the bottom groove of the support rack.

[0015] Preferably, the air outlet end of the air supply pipe is connected to the air inlet end of the one-way valve, a plurality of fixing rings are installed on the top of the support frame, the air supply pipe is located between the plurality of fixing rings, a burette is provided between the opposite sides of the two anti-slip pads, and the burette is located directly above the conical flask.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is capable of processing the liquid remaining in the conical flask after the drug inspection by arranging an auxiliary mechanism, which reduces the workload of the staff and avoids the risk of injury when the staff collects the liquid in the conical flask, thereby improving the use effect of the analytical titration device for drug inspection that is easy to observe, is convenient for environmental protection, and also improves the use efficiency of the analytical titration device for drug inspection that is easy to observe. When it is necessary to process the liquid inside the conical flask, the pH value of the liquid in the conical flask can be detected by first using a tool for measuring the pH value of the liquid, that is, what kind of neutralizing liquid can be injected into the liquid storage tank. Subsequently, the funnel tube and the diversion tube can be used to divert the liquid poured into the funnel tube to the inside of the diversion shell. At the same time, the controller, the electric valve, the diversion shell and the connecting tube can be used to divert the liquid in the liquid storage tank to the inside of the diversion shell.

[0017] 2. The present invention then utilizes the cooperation of the guide shell to guide both liquids into the interior of the treatment tank for neutralization reaction, and then utilizes the cooperation of the sensor and the controller to realize pH value detection of the mixed solution inside the treatment tank. When the pH value received by the controller is the same as the pH threshold value set in advance by the controller, the controller utilizes the cooperation of the electric push rod to move the bottom end of the card rod out from the interior of the circular tube, and then utilizes the cooperation of the circular tube to guide the treated mixed liquid into the space composed of the box body and the baffle, and then utilizes the cooperation of the porous plate and the adsorption layer to realize further processing of the treated mixed liquid, and then utilizes the cooperation of the liquid outlet pipe to guide the treated mixed liquid away.

[0018] 3. The present invention is capable of inspecting drugs and judging whether the drugs are of qualified quality by providing a titration mechanism. When the drugs need to be inspected, the burette is first clamped and fixed by using the cooperation of a clamp consisting of a fixing frame, a double-hole block, an L-shaped block, two fixing clips, two anti-slip pads and a second hand screw. Then, the position of the liquid outlet of the burette is adjusted by using the cooperation of the first hand screw, the long rod and the clamp for fixing the burette. Then, the conical flask is fixed inside the hollow block by using the cooperation of the hollow block, the two limit blocks and the workbench. Then, the gas output from the gas storage bottle is guided into the drug solution inside the conical flask by using the cooperation of the gas storage bottle, the gas transmission pipe, the one-way valve, the L-shaped frame with holes and the gas guide pipe.

[0019] 4. The present invention then utilizes the inert gas bubbling method to fully mix the titrant released from the burette with the drug solution in the conical flask until the color of the indicator in the drug solution suddenly changes and does not return to its original color within half a minute, which is the titration end point. Thereafter, the titrant concentration, consumed volume, and drug solution volume data are used, and the stoichiometric relationship is used to calculate the content of the component to be tested in the drug. That is, the obtained result is compared with the standard data to determine whether the tested drug meets the statutory standard requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of an analytical titration device for drug testing that is easy to observe according to the present invention; Figure 2 This is a schematic diagram of the auxiliary mechanism portion of an analytical titration device for drug testing that is easy to observe according to the present invention; Figure 3 This is a partially cutaway perspective view of an auxiliary mechanism of an analytical titration device for drug testing that is easy to observe according to the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of an L-shaped frame with holes and an air guide tube of an analytical titration device for drug testing that is easy to observe according to the present invention; Figure 5 A partial three-dimensional diagram from a top view of a titration mechanism of an analytical titration device for drug testing that is easy to observe according to the present invention; Figure 6 This is a three-dimensional diagram of a limit block of an analytical titration device for drug testing that is easy to observe according to the present invention; Figure 7 A partial perspective view of an analytical titration device for drug testing that is easy to observe according to the present invention; Figure 8 This is a cutaway perspective view of another portion of the auxiliary mechanism of the analytical titration device for drug testing that is easy to observe according to the present invention; Figure 9 The present invention is an analytical titration device for drug testing that is easy to observe Figure 1 A in the middle is an enlarged stereogram; Figure 10 The present invention is an analytical titration device for drug testing that is easy to observe Figure 7 Enlarged stereogram of point B in the middle.

[0021] In the figure: 1. Titration mechanism; 101. Workbench; 102. Long rod; 103. Fixing frame; 104. Double-hole block; 105. L-shaped block; 106. Fixing clamp; 107. Anti-slip pad; 108. Hollow block; 109. Erlenmeyer flask; 110. Stop block; 111. Rectangular groove; 112. L-shaped frame with hole; 113. Gas guide tube; 114. One-way valve; 115. Placement rack; 116. Gas cylinder; 117. Support frame; 118. Gas pipe; 119. Fixing ring; 120. Burette; 2. Auxiliary Mechanism; 201, placement table; 202, perforated plate; 203, controller; 204, rectangular plate; 205, box; 206, treatment tank; 207, baffle; 208, adsorption layer; 209, porous plate; 210, liquid outlet pipe; 211, circular pipe; 212, clamping rod; 213, electric push rod; 214, guide shell; 215, liquid storage tank; 216, electric valve; 217, connecting pipe; 218, guide pipe; 219, pipe cover; 220, partition plate; 221, funnel tube; 222, sensor. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figures 1-9 As shown, the present invention provides a technical solution: an analytical titration device for drug testing that is easy to observe, comprising a titration mechanism 1, on which an auxiliary mechanism 2 is provided; The auxiliary mechanism 2 includes a placement table 201 and a controller 203. A rectangular plate 204 is fixed inside the placement table 201. A box 205 is fixed to the bottom of the inner wall of the placement table 201 near one side edge. A processing tank 206 is provided on the top of the box 205. A baffle 207 is installed at the opening of the box 205. An adsorption layer 208 is provided at the bottom of the inner wall of the box 205. A porous plate 209 is provided inside the box 205. A liquid outlet pipe 210 is fixedly passed through the front surface of the baffle 207 near the bottom position. A circular tube 211 is fixedly passed through the top of the inner wall of the box 205. A clamping rod 212 is movably passed through the top of the box 205. A liquid storage tank 2 is installed on the top of the inner wall of the placement table 201. 15. An electric push rod 213 is installed near the bottom of one side of the liquid storage tank 215, an electric valve 216 is installed at the liquid outlet of the liquid storage tank 215, and a connecting pipe 217 is installed at the liquid outlet of the electric valve 216. A guide pipe 218 is movably passed through the top of the inner wall of the placement table 201, a funnel pipe 221 is installed at the liquid inlet end of the guide pipe 218, and a guide shell 214 is installed at the liquid outlet end of the guide pipe 218. A partition plate 220 is fixed inside the guide pipe 218. A sensor 222 is installed on the side of the box body 205 close to the rectangular plate 204. The bottom of the porous plate 209 is in contact with the top of the adsorption layer 208. The interior of the circular tube 211 is connected to the interior of the processing tank 206. The clamping rod 21 2 is movably sleeved inside the circular tube 211, one end of the telescopic end of the electric push rod 213 is installed with the top of the clamping rod 212, the detection end of the sensor 222 extends to the inside of the processing tank 206, the liquid inlet end of the guide tube 218 is connected to the liquid outlet end of the connecting pipe 217, the guide shell 214 is inside the processing tank 206, the liquid outlet end of the guide tube 218 is fixedly sleeved inside the processing tank 206 near the slot position, the electric push rod 213, the sensor 222 and the electric valve 216 are all electrically connected to the controller 203, a perforated plate 202 is installed at the opening of the placement table 201, the controller 203 is installed on the front surface of the perforated plate 202, and the liquid inlet end of the funnel tube 221 is placed A tube cover 219 is provided, and the titration mechanism 1 includes a workbench 101. The bottom of the workbench 101 is fixed to the top of the placement table 201. A hollow block 108 is fixed to the top of the workbench 101 near the edge. A conical flask 109 is provided inside the hollow block 108. The bottom of the conical flask 109 is in contact with the top of the workbench 101. Two symmetrical limit blocks 110 are installed on the top of the hollow block 108. The conical flask 109 is located between the two limit blocks 110. A rectangular groove 111 is provided on the top of the hollow block 108. An L-shaped frame 112 with a hole is squeezed and fixed inside the rectangular groove 111 by a third hand-tightening screw. An air guide tube 113 is fixedly sleeved inside the L-shaped frame 112 with a hole.

[0024] In this embodiment, when the liquid inside the conical flask 109 (waste liquid after drug testing) needs to be processed, the sealing cover on the air guide tube 113 is first removed, and then the perforated L-shaped frame 112 with the air guide tube 113 is removed from the inside of the rectangular groove 111. At this time, no liquid will remain in the air guide tube 113 removed from the inside of the conical flask 109. Then, the controller 203 is connected to the external power supply through the power cord, and then the pH value of the liquid in the conical flask 109 is detected by a tool. Then, both limit blocks 110 are removed from the hollow block 108, and then the conical flask 109 is taken out from the inside of the hollow block 108. When the liquid in the conical flask 109 is detected to be acidic liquid (or alkaline liquid), it is directly discharged to the liquid storage tank 215. An alkaline liquid (or acidic liquid) that can neutralize the liquid is injected into the interior of the funnel tube 221, and then the controller 203 is turned on, and the pH value threshold and basic usage procedures are set. Then, the tube cover 219 is removed from the funnel tube 221, and a delivery hose is connected to the outlet of the liquid outlet pipe 210. The outlet of the delivery hose is placed in the liquid collection bucket. Then, the liquid in the conical flask 109 is poured into the interior of the funnel tube 221, and the controller 203 is used to open the electric valve 216 and the sensor 222, and the speed of outflow from the outlet of the electric valve 216 is controlled. Then, the liquid entering the funnel tube 221 will first be diverted to the interior of the diversion pipe 218, and the liquid in the liquid storage tank 215 will also be opened with the cooperation of the opened electric valve 216 and the connecting pipe 217. , is directed to the inside of the guide tube 218, and then the two liquids inside the guide tube 218 will be directed to the inside of the guide shell 214 together, and finally directed to the inside of the treatment tank 206 for neutralization reaction operation. When the mixed liquid contacts the detection end of the sensor 222, the sensor 222 will directly transmit the detected pH value to the controller 203 in the form of an electrical signal, and then the controller 203 will compare the received pH value with the pH threshold value set in advance by the controller 203. When all the liquid in the conical flask 109 is poured out, the controller 203 is used to close the electric valve 216. When the pH value received by the controller 203 is lower (or higher) than the pH threshold value set in advance by the controller 203, the controller 2 03 will open the electric valve 216 again to release the alkaline liquid (or acidic liquid) in the liquid storage tank 215 and guide it into the interior of the treatment tank 206. When the pH value received by the controller 203 is the same as the pH threshold value set in advance by the controller 203, the controller 203 will directly close the electric valve 216. At this time, the liquid in the treatment tank 206 is a neutral liquid. Subsequently, the controller 203 and the electric push rod 213 cooperate to drive the bottom end of the clamping rod 212 to move out of the interior of the circular tube 211. When the bottom end of the clamping rod 212 moves out of the interior of the circular tube 211, the treated mixed liquid in the treatment tank 206 will directly pass through the cooperation of the circular tube 211 and be guided into the space formed by the interior of the box body 205 and the baffle 207.When the mixed liquid flows out of the interior of the circular tube 211 and contacts the surface of the porous plate 209, the mixed liquid will be evenly guided to the adsorption layer 208 with the cooperation of the porous plate 209. When the mixed liquid passes through the interior of the adsorption layer 208, the adsorption layer 208 (ion exchange particles) can adsorb and remove the heavy metal ions mixed in the mixed liquid. The treated mixed liquid will then enter the interior of the liquid outlet pipe 210, and then be transported to the interior of the delivery hose, and then to the prepared collection bucket for collection.

[0025] Example 2: According to Figure 1 、 Figure 4-Figure 7 、 Figure 9 and Figure 10 As shown, the titration mechanism 1 includes a workbench 101, a long rod 102 is fixed at the top of the workbench 101 near the edge, and a fixing bracket 103 is fixed to the outer surface of the long rod 102 by a first hand-tightening screw, and a double-hole block 104 is fixedly sleeved on the outer surface of the fixing bracket 103 near one end, and an L-shaped block 105 is fixed to the inside of one of the through holes of the double-hole block 104 by a second hand-tightening screw, and a fixing clamp 106 is fixed to one end of the fixing bracket 103 and the front surface of the L-shaped block 105, and the inner wall arc surfaces of the two fixing clamps 106 are bonded and connected with anti-slip pads 107, a hollow block 108 is fixed at the top of the workbench 101 near the edge, and a conical flask 109 is arranged inside the hollow block 108, and the bottom of the conical flask 109 is in contact with the top of the workbench 101, and two symmetrical limit blocks 110 are installed on the top of the hollow block 108, and the conical flask 109 is located between the two limit blocks 110. A rectangular groove 111 is provided on the top of the block 108. An L-shaped frame 112 with a hole is fixed to the inside of the rectangular groove 111 by a third hand screw. An air guide tube 113 is fixedly sleeved inside the L-shaped frame 112 with a hole. A one-way valve 114 is installed at the air inlet end of the air guide tube 113. A placement rack 115 is installed on the top of the workbench 101. A gas cylinder 116 is provided inside the placement rack 115. A support rack 117 is fixed to the bottom of the workbench 101. An air pipe 118 is installed at the air outlet end of the bottle 116. The air pipe 118 is located in the bottom groove of the support frame 117. The air outlet end of the air pipe 118 is connected to the air inlet end of the one-way valve 114. A plurality of fixing rings 119 are installed on the top of the support frame 117. The air pipe 118 is located between the interiors of the plurality of fixing rings 119. A burette 120 is provided between the opposite sides of the two anti-slip pads 107. The burette 120 is located directly above the conical flask 109.

[0026] In this embodiment, when it is necessary to test a drug, the drug to be tested is first dissolved and diluted to an appropriate concentration according to the prescribed method to ensure that the solution is uniform and free of impurities. Then, the prepared burette 120 (an acid burette or a maintenance burette can be used as needed) and the conical flask 109 are cleaned. Then, the titrant is added to the conical flask 109 so that the liquid level is slightly above the "0" scale line. Then, the liquid level in the burette 120 is adjusted to the "0" scale or slightly below, and the initial reading is accurately taken and recorded. Then, bubbles at the tip of the burette 120 are removed, and then the burette 120 containing the titrant is fixed to the fixing frame 103, the double-hole block 104, the L-shaped block 105, the two fixing clips 106, and the two anti-slip pads. 107 and the second hand screw, and finally use the first hand screw, the long rod 102 and the clamp for fixing the burette 120 to adjust the distance between the liquid outlet of the burette 120 and the top of the workbench 101. When the position of the liquid outlet of the burette 120 is adjusted, the conical flask 109 is first placed inside the hollow block 108, and then the conical flask 109 is fixed by the cooperation of the two limit blocks 110. Then, a certain volume of drug solution is accurately transferred to the conical flask 109 with a pipette or other suitable measuring tool, and then an appropriate amount of distilled water is added to dilute it (according to the needs of the experiment), and an indicator is added. Then, the L-shaped perforated tube with an air guide tube 113 (preliminarily cleaned and not reactive with the drug solution and indicator) is placed in the conical flask 109. The frame 112 is fixed to the inside of the rectangular groove 111 by a third hand-tightening screw. When the perforated L-shaped frame 112 is installed, the gas outlet port of the gas guide tube 113 is just in the drug solution of the conical flask 109. Then the gas storage bottle 116 is opened and the gas output of the gas storage bottle 116 is adjusted. Then the gas (inert gas) ejected from the outlet of the gas storage bottle 116 will be directly transported to the inside of the gas pipe 118, and then transported to the inside of the one-way valve 114, and then transported to the inside of the gas guide tube 113, and then transported to the drug solution in the conical flask 109, and finally emerge from the drug solution. When there are continuous bubbles emerging from the drug solution, the staff will control the stopcock or latex tube of the burette 120 with his left hand to control the burette 120 to the conical A few drops of titrant are dripped into the bottle 109. When the titrant contacts the drug solution, the inert gas bubbling method is used to allow the titrant dripped into the drug solution to be fully mixed with the drug solution. During this period, the staff needs to observe the color change in the drug solution. When the color of the indicator in the drug solution suddenly changes and does not return to its original color within half a minute, it is the titration end point. At this time, the endpoint reading of the burette 120 is accurately read and recorded. Then, the burette 120 is stopped from dripping the titrant into the conical flask 109. Then, the gas cylinder 116 is closed and the gas release from the gas cylinder 116 is stopped. Then, the stoichiometric relationship is used to calculate based on the concentration of the titrant, the volume consumed, the volume of the drug solution and other data.The content of the tested component in the drug can be obtained, and then the obtained result can be compared with the standard data to determine whether the tested drug meets the requirements of the legal standard.

[0027] The effect and working principle of the entire mechanism are as follows: when it is necessary to test the medicine, the medicine to be tested is first dissolved and diluted to an appropriate concentration according to the prescribed method to ensure that the solution is uniform and free of impurities. Then, the prepared burette 120 (an acid burette or a maintenance burette is used as needed) and the conical flask 109 are cleaned. Then, the titrant is placed in the conical flask 109 so that the liquid level is slightly above the "0" scale line. Then, the liquid level in the burette 120 is adjusted to the "0" scale or slightly below, and the initial reading is accurately read and recorded. Then, the bubbles at the tip of the burette 120 are eliminated, and then the burette 120 filled with the titrant is fixed on the fixing frame 103, the double-hole block 104, the L-shaped block 105, and the two fixed The clamp is composed of a fixed clamp 106, two anti-slip pads 107 and a second hand-tightening screw, and finally the first hand-tightening screw, the long rod 102 and the clamp for fixing the burette 120 are used to adjust the distance between the liquid outlet of the burette 120 and the top of the workbench 101. When the position of the liquid outlet of the burette 120 is adjusted, the conical flask 109 is first placed inside the hollow block 108, and then the conical flask 109 is fixed by the cooperation of the two limit blocks 110. Then, a certain volume of drug solution is accurately transferred to the conical flask 109 with a pipette or other suitable measuring tool, and then an appropriate amount of distilled water is added to dilute it (according to the needs of the experiment), and an indicator is added, and then the conical flask with the air guide tube 113 (which has been cleaned in advance and does not come into contact with the drug solution) is placed in the workbench 101. The L-shaped frame 112 with holes (for reaction with the indicator) is fixed to the inside of the rectangular groove 111 by a third hand-tightening screw. When the L-shaped frame 112 with holes is installed, the gas outlet end of the gas guide tube 113 is just in the drug solution of the conical flask 109. Then, the gas storage bottle 116 is opened and the gas output of the gas storage bottle 116 is adjusted. Then, the gas (inert gas) ejected from the outlet of the gas storage bottle 116 will be directly transported to the inside of the gas pipe 118, and then to the inside of the one-way valve 114, and then to the inside of the gas guide tube 113, and then to the drug solution in the conical flask 109, and finally emerge from the drug solution. When there are continuous bubbles emerging from the drug solution, the staff will control the stopcock or latex of the burette 120 with their left hand. Tube, control the burette 120 to drip a few drops of titrant into the interior of the conical flask 109. When the titrant contacts the drug solution, the inert gas bubbling method can be used to allow the titrant dripped into the drug solution to be fully mixed with the drug solution. During this period, the staff needs to observe the color change in the drug solution. When the color of the indicator in the drug solution suddenly changes and does not return to its original color within half a minute, it is the titration end point. At this time, first accurately read the end point reading of the burette 120 and record it, then stop the burette 120 from dripping the titrant into the conical flask 109, then close the gas cylinder 116 and stop the gas cylinder 116 from releasing gas outwards. Then, according to the concentration of the titrant, the volume consumed, the volume of the drug solution and other data,By using the chemical measurement relationship to calculate, the content of the component to be tested in the drug can be obtained, and then the obtained result can be compared with the standard data to determine whether the tested drug meets the requirements of the statutory standards. When it is necessary to process the liquid inside the conical flask 109 (waste liquid after drug inspection), first remove the sealing cover on the air guide tube 113, and then remove the perforated L-shaped frame 112 with the air guide tube 113 from the inside of the rectangular groove 111. At this time, there will be no liquid left in the air guide tube 113 removed from the inside of the conical flask 109. Then connect the controller 203 to the external power supply through the power cord, and then use a tool to detect the pH value of the liquid in the conical flask 109, and then remove the two limit blocks 110 from the hollow The block 108 is removed, and then the conical flask 109 is taken out from the inside of the hollow block 108. When the liquid in the conical flask 109 is detected to be an acidic liquid (or alkaline liquid), an alkaline liquid (or acidic liquid) that can neutralize the liquid is directly injected into the liquid storage tank 215. Then the controller 203 is turned on, and the pH value threshold and basic usage procedures are set. Then the tube cover 219 is removed from the funnel tube 221, and a delivery hose is connected to the outlet of the liquid outlet pipe 210. The outlet of the delivery hose is placed in the liquid collection bucket. Then the liquid in the conical flask 109 is poured into the inside of the funnel tube 221. At the same time, the controller 203 is used to open the electric valve 216 and the sensor 222, and the output from the electric valve 216 is controlled. The liquid flowing out of the outlet is controlled at a speed which is proportional to the flow rate. Then, the liquid entering the funnel tube 221 will first be diverted to the interior of the guide tube 218. At the same time, the liquid in the liquid storage tank 215 will also be diverted to the interior of the guide tube 218 under the cooperation of the opened electric valve 216 and the connecting tube 217. Then, the two liquids in the guide tube 218 will be diverted together to the interior of the guide shell 214, and finally to the interior of the treatment tank 206 for neutralization reaction operation. When the mixed liquid contacts the detection end of the sensor 222, the sensor 222 will transmit the detected pH value directly to the controller 203 in the form of an electrical signal. Then, the controller 203 will compare the received pH value with the pH threshold value set in advance by the controller 203. When the conical flask is opened, the pH value is directly transmitted to the controller 203. When all the liquid in 109 is poured out, the controller 203 is used to close the electric valve 216. When the pH value received by the controller 203 is lower (or higher) than the pH threshold value set in advance by the controller 203, the controller 203 will open the electric valve 216 again to release the alkaline liquid (or acidic liquid) in the liquid storage tank 215 and divert it to the inside of the treatment tank 206. When the pH value received by the controller 203 is the same as the pH threshold value set in advance by the controller 203, the controller 203 will directly close the electric valve 216. At this time, the liquid in the treatment tank 206 is a neutral liquid. Subsequently, the cooperation between the controller 203 and the electric push rod 213 is used to drive the bottom end of the clamping rod 212 to move out of the interior of the circular tube 211.When the bottom end of the clamping rod 212 moves out of the interior of the circular tube 211, the treated mixed liquid in the treatment tank 206 will directly pass through the cooperation of the circular tube 211 and be guided into the space formed by the interior of the box 205 and the baffle 207. When the mixed liquid flows out of the interior of the circular tube 211 and contacts the surface of the porous plate 209, the mixed liquid will be evenly guided to the adsorption layer 208 with the cooperation of the porous plate 209. When the mixed liquid passes through the interior of the adsorption layer 208, the heavy metal ions mixed in the mixed liquid can be adsorbed and removed under the action of the adsorption layer 208 (ion exchange particles). The mixed liquid that has been treated again will then enter the interior of the liquid outlet pipe 210, and then be transported to the interior of the delivery hose, and then transported to the prepared collection bucket for collection.

[0028] Among them, the first-hand screw, the second-hand screw and the third-hand screw are all commonly used parts in reality.

[0029] The air duct 113 is provided with an exhaust port, and a sealing cover is installed on the exhaust port. The exhaust port can help the liquid in the air duct 113 to flow out smoothly from the interior of the air duct 113 .

[0030] Among them, the conical flask 109, the one-way valve 114, the gas cylinder 116, the burette 120, the controller 203 (PLC controller), the adsorption layer 208, the electric push rod 213, the liquid storage tank 215, the electric valve 216 and the sensor 222 are all existing technologies. Their models can be selected according to actual conditions and will not be explained in detail here.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An analytical titration device for drug testing that is easy to observe, characterized in that: It comprises a titration mechanism (1), wherein the titration mechanism (1) is provided with an auxiliary mechanism (2); The auxiliary mechanism (2) includes a placement table (201) and a controller (203). A rectangular plate (204) is fixed inside the placement table (201). A box (205) is fixed at the bottom of the inner wall of the placement table (201) near one side edge. A treatment tank (206) is provided on the top of the box (205). A baffle (207) is installed at the opening of the box (205). An adsorption layer (208) is provided at the bottom of the inner wall of the box (205). A porous plate (209) is provided inside the box (205). A liquid outlet pipe (210) is fixedly passed through the front surface of the baffle (207) near the bottom position. A circular tube (211) is fixedly passed through the top of the inner wall of the box (205). The top of the box (205) is movable. A clamping rod (212) is passed through the top of the inner wall of the placement platform (201), a liquid storage tank (215) is installed on the top of the inner wall of the placement platform (201), an electric push rod (213) is installed on one side of the liquid storage tank (215) near the bottom, an electric valve (216) is installed at the liquid outlet end of the liquid storage tank (215), and a connecting pipe (217) is installed at the liquid outlet end of the electric valve (216), a guide pipe (218) is movably passed through the top of the inner wall of the placement platform (201), a funnel pipe (221) is installed at the liquid inlet end of the guide pipe (218), a guide shell (214) is installed at the liquid outlet end of the guide pipe (218), a partition plate (220) is fixed inside the guide pipe (218), and a sensor (222) is installed on the side of the box body (205) near the rectangular plate (204).

2. The analytical titration device for drug testing according to claim 1, characterized in that: The bottom of the porous plate (209) is in contact with the top of the adsorption layer (208), the interior of the circular tube (211) is connected to the interior of the treatment tank (206), the bottom end of the clamping rod (212) is movably sleeved inside the circular tube (211), one end of the telescopic end of the electric push rod (213) is installed with the top end of the clamping rod (212), and the detection end of the sensor (222) extends to the interior of the treatment tank (206).

3. The analytical titration device for drug testing according to claim 1, characterized in that: The liquid inlet end of the flow guide tube (218) is connected to the liquid outlet end of the connecting tube (217); the flow guide shell (214) is located inside the treatment tank (206); the liquid outlet end of the flow guide tube (218) is fixedly sleeved inside the treatment tank (206) near the slot; the electric push rod (213), the sensor (222) and the electric valve (216) are all electrically connected to the controller (203).

4. The analytical titration device for drug testing according to claim 1, characterized in that: A perforated plate (202) is installed at the opening of the placement table (201), the controller (203) is installed on the front surface of the perforated plate (202), and a tube cover (219) is placed at the liquid inlet end of the funnel tube (221).

5. The analytical titration device for drug testing that is easy to observe according to claim 1, characterized in that: The titration mechanism (1) includes a workbench (101), the bottom of the workbench (101) and the top of the placement table (201) are fixed to each other, a long rod (102) is fixed to the top of the workbench (101) near the edge, and a fixing frame (103) is fixed to the outer surface of the long rod (102) by squeezing through a first hand-tightened screw.

6. The analytical titration device for drug testing according to claim 5, characterized in that: A double-hole block (104) is fixedly sleeved on the outer surface of the fixing frame (103) near one end, an L-shaped block (105) is squeezed and fixed inside one of the through holes of the double-hole block (104) by a second hand-tightened screw, and a fixing clip (106) is fixed to one end of the fixing frame (103) and the front surface of the L-shaped block (105).

7. The analytical titration device for drug testing according to claim 6, characterized in that: The inner wall arc surfaces of the two fixing clamps (106) are both bonded with anti-slip pads (107), a hollow block (108) is fixed to the top of the workbench (101) near the edge, a conical flask (109) is arranged inside the hollow block (108), the bottom of the conical flask (109) is in contact with the top of the workbench (101), and two symmetrical limit blocks (110) are installed on the top of the hollow block (108).

8. The analytical titration device for drug testing according to claim 7, characterized in that: The conical flask (109) is located between two limiting blocks (110). A rectangular groove (111) is provided on the top of the hollow block (108). An L-shaped frame (112) with a hole is squeezed and fixed inside the rectangular groove (111) by a third hand-tightening screw. An air guide tube (113) is fixedly sleeved inside the L-shaped frame (112). A one-way valve (114) is installed at the air inlet end of the air guide tube (113).

9. The analytical titration device for drug testing according to claim 8, characterized in that: A placement rack (115) is installed on the top of the workbench (101), a gas cylinder (116) is arranged inside the placement rack (115), a support rack (117) is fixed to the bottom of the workbench (101), a gas pipe (118) is installed at the gas outlet end of the gas cylinder (116), and the gas pipe (118) is located in a bottom groove of the support rack (117).

10. The analytical titration device for drug testing according to claim 9, characterized in that: The gas outlet end of the gas delivery pipe (118) is connected to the gas inlet end of the one-way valve (114), a plurality of fixing rings (119) are installed on the top of the support frame (117), and the gas delivery pipe (118) is located between the plurality of fixing rings (119). A burette (120) is provided between opposite sides of the two anti-slip pads (107), and the burette (120) is located directly above the conical flask (109).

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