Drug residue detection device

Abstract

The present invention discloses a drug residue detection device, which relates to the field of drug detection technology. The drug residue detection device, through the cooperation of a liquid discharge pipe and a liquid mixing box, can complete the mixing and conveying operations of a solution to be detected, and through the provision of a conical filter, can complete a filtering operation when the solution to be detected enters the interior of the liquid discharge pipe, and can complete precipitation when the solution to be detected enters the interior of the liquid discharge pipe, thereby further preventing impurities from entering the interior of the detection box through the liquid guide pipe, improving the detection accuracy of the device, and being more convenient than traditional cleaning methods, and can facilitate the cleaning of residues in the liquid mixing box and filtered materials in the conical filter, effectively improving the cleaning effect of the device, and preventing drug residues from affecting subsequent detection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of drug detection, in particular to a drug residue detection device. Background Art

[0002] Drug residue detection refers to the process of qualitative and quantitative analysis of drug precursors, metabolites, or related chemical substances in samples such as organisms, foods, and the environment. Referring to the Chinese patent with the publication number "CN216525457U" titled "A Food Drug Residue Detection Device," the patent points out that existing detection equipment cannot effectively mix water and food evenly, resulting in large detection errors and needs to be improved. However, the equipment is still difficult to clean and maintain, resulting in residual drugs inside the equipment that can easily affect the detection effect. Therefore, we propose a drug residue detection device to address the above problems. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention provides a drug residue detection device that solves the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a drug residue detection device, comprising a body, an upper cover fixedly mounted on the top surface of the body, a feed pipe and a liquid inlet pipe connected to the upper cover, a mixing box mounted inside the body, and the mixing box is used to mix the solution to be detected;

[0005] A detection box is installed inside the body. The installation position of the detection box is located directly below the mixing box. The bottom of the mixing box is connected to a drainage pipe. A sealing head is fixedly installed at the end of the drainage pipe. The outer side of the drainage pipe is connected to a liquid guide tube, which is used to transport the solution to be tested to the interior of the detection box.

[0006] A conical filter is fixedly installed inside the drainage pipe to filter out impurities in the solution. An elastic ring is fixedly installed at the end of the conical filter, and a plurality of sealing sheets are fixedly installed inside the elastic ring.

[0007] A negative pressure device is fixedly installed inside the machine body, a connecting pipe is connected between the negative pressure device and the drain pipe, and a one-way valve is fixedly installed inside the connecting pipe.

[0008] Preferably, an elastic tube is fixedly mounted on the end of the liquid guiding tube, and the end of the elastic tube extends into the interior of the detection box.

[0009] Preferably, a shunt tube is fixedly installed on the outside of the liquid inlet tube, and the shunt tube and the liquid inlet tube are connected to each other. A rectangular shunt frame is fixedly installed on the inner top of the detection box, and the end of the shunt tube away from the liquid inlet tube is fixedly connected to the rectangular shunt frame.

[0010] Preferably, the diverter tube and the rectangular diverter frame are communicated with each other, and the diverter tube is used to transport the cleaning water to the interior of the detection box through the rectangular diverter frame.

[0011] Preferably, a control valve is fixedly installed at the end of the diversion pipe.

[0012] Preferably, a control panel is fixedly mounted on the outer side of the machine body, and a pull plate is fixedly mounted on the outer side of the detection box for pulling out the detection box.

[0013] Preferably, a vibration motor is fixedly installed on the outside of the liquid mixing box to drive the liquid inside the liquid mixing box to vibrate and realize the liquid mixing operation.

[0014] Preferably, two bottom base plates are fixedly installed inside the machine body, and a plurality of supporting springs are fixedly installed between the bottom base plates and both sides of the bottom of the mixing box.

[0015] Preferably, a mixing rod is rotatably mounted on the middle of the top surface of the mixing liquid box, a mixing rack is fixedly mounted on the outer side of the mixing rod, and an arc-shaped mixing plate is fixedly mounted on the end of the mixing rack, elastic scrapers are fixedly mounted on both ends of the side of the arc-shaped mixing plate, a plurality of limiting shafts are fixedly mounted on the middle of the side of the arc-shaped mixing plate, and the ends of the limiting shafts are rotatably connected to rolling wheels.

[0016] Preferably, a servo motor is fixedly installed on the outer side of the liquid mixing box, and the output end of the servo motor is connected to the end of the mixing rod through a coupling.

[0017] The present invention provides a drug residue detection device. Compared with the prior art, it has the following advantages:

[0018] (1) The drug residue detection device can complete the mixing and conveying operations of the solution to be detected through the cooperation of the drainage pipe and the mixing box, and through the setting of the conical filter, it can complete a filtration operation when the solution to be detected enters the drainage pipe, and can complete precipitation when the solution to be detected enters the drainage pipe, thereby further preventing impurities from entering the detection box through the liquid guide tube, improving the detection accuracy of the equipment, and is more convenient than traditional cleaning methods, and can facilitate the cleaning of residues in the mixing box and filtered materials in the conical filter, effectively improving the cleaning effect of the equipment, and avoiding drug residues affecting the subsequent detection accuracy.

[0019] (2) The drug residue detection device, through the setting of the mixing box, can ensure the mixing effect inside the mixing box through the setting of the vibration motor and the support spring. At the same time, through the cooperation of the elastic scraper and the crushing wheel, on the one hand, it can crush the object to be tested during the mixing process so that the medicine inside it can be evenly mixed with water. At the same time, the elastic scraper can improve the cleaning effect inside the mixing box, avoid the residue of drugs and impurities, and improve the use effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the machine body of the present invention;

[0022] Figure 3 For the present invention Figure 2 Look at the structural diagram;

[0023] Figure 4 This is a schematic structural diagram of the liquid mixing box of the present invention;

[0024] Figure 5 This is a schematic cross-sectional view of the structure of the liquid mixing box of the present invention;

[0025] Figure 6 For the present invention Figure 5 A in the middle is an enlarged structural diagram;

[0026] Figure 7 This is a schematic diagram of the cross-sectional structure of the liquid discharge pipe of the present invention;

[0027] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B in the middle.

[0028] In the figure: 1. Machine body; 2. Upper cover; 3. Control panel; 4. Detection box; 5. Pull plate; 6. Feed pipe; 7. Liquid inlet pipe; 701. Diverter pipe; 702. Control valve; 8. Liquid mixing box; 801. Mixing rod; 8011. Mixing rack; 8012. Curved mixing plate; 8013. Elastic scraper; 8014. Limiting shaft; 8015. Rolling wheel; 802. Servo motor; 9. Vibration motor; 10. Bottom plate; 1001. Support spring; 11. Negative pressure device; 1101. Connecting pipe; 1102. One-way valve; 12. Drain pipe; 1201. Sealing head; 1202. Conical filter screen; 1203. Elastic beam ring; 1204. Sealing piece; 13. Liquid guide tube; 1301. Elastic tube; 14. Rectangular diverter rack. DETAILED DESCRIPTION

[0029] 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 described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figures 1-8 The present invention provides two technical solutions, specifically including the following embodiments: Example 1:

[0031] In an embodiment of the present invention, a drug residue detection device includes a body 1, an upper cover 2 is fixedly mounted on the top surface of the body 1, a feed pipe 6 and a liquid inlet pipe 7 are connected to the upper cover 2, and a mixing box 8 is installed inside the body 1, and the mixing box 8 is used to mix the solution to be detected;

[0032] In the embodiment of the present invention, specifically, during the test, the object to be tested is introduced into the mixing tank 8 through the feed pipe 6, and then a certain amount of water is added to the mixing tank 8 through the liquid inlet pipe 7 to mix the residual drug in the object to be tested and the water, and then the drug components in the water are tested;

[0033] In the embodiment of the present invention, specifically, a detection box 4 is installed inside the body 1. The detection box 4 is installed directly below the mixing box 8. A drainage pipe 12 is connected to the bottom of the mixing box 8. A plugging head 1201 is fixedly installed at the end of the drainage pipe 12. A liquid guide tube 13 is connected to the outside of the drainage pipe 12. The liquid guide tube 13 is used to transport the solution to be tested to the interior of the detection box 4.

[0034] Specifically, a valve is installed inside the drain pipe 12 to control the water inside the mixing tank 8 to enter the drain pipe 12;

[0035] In the embodiment of the present invention, when the residual drug inside the test object is mixed with water, the valve is opened, and the test solution inside the mixing box 8 enters the drainage pipe 12. As the water level inside the drainage pipe 12 rises, the test solution enters the test box 4 through the liquid guide tube 13 to complete the detection operation.

[0036] In the embodiment of the present invention, specifically, the detection box 4 is an existing device, and a detection test paper is placed inside it for performing a detection operation on the solution to be detected, which will not be described in detail here;

[0037] In the embodiment of the present invention, a conical filter 1202 is fixedly installed inside the drain pipe 12 for filtering out impurities in the solution. An elastic ring 1203 is fixedly installed at the end of the conical filter 1202, and a plurality of sealing sheets 1204 are fixedly installed inside the elastic ring 1203.

[0038] In the embodiment of the present invention, the conical filter 1202 is provided to allow the solution to be tested to complete a filtration operation when entering the drainage pipe 12, and to complete precipitation when the solution to be tested enters the drainage pipe 12, thereby further preventing impurities from entering the detection box 4 through the liquid guide tube 13, thereby improving the detection accuracy of the device;

[0039] In the embodiment of the present invention, a negative pressure device 11 is fixedly installed inside the body 1, a connecting pipe 1101 is connected between the negative pressure device 11 and the drain pipe 12, and a one-way valve 1102 is fixedly installed inside the connecting pipe 1101;

[0040] In the embodiment of the present invention, after the equipment completes a detection operation, the negative pressure device 11 is operated to extract impurities and solution from the inside of the drainage pipe 12 and the mixing liquid box 8, thereby completing the cleaning operation. During the cleaning process, the conical filter screen 1202 can be forced to open as the negative pressure device 11 operates, thereby completing the automatic cleaning operation of the filtered material. During the cleaning process, the cleaning water is introduced into the mixing liquid box 8 through the liquid inlet pipe 7 to complete the flushing process.

[0041] In the embodiment of the present invention, compared with the traditional cleaning method, it is more convenient and can effectively improve the cleaning effect of the equipment, avoiding drug residues that affect the accuracy of subsequent detection;

[0042] In the embodiment of the present invention, an elastic tube 1301 is fixedly installed at the end of the liquid guiding tube 13, and the end of the elastic tube 1301 extends into the interior of the detection box 4;

[0043] In the embodiment of the present invention, a shunt tube 701 is fixedly installed on the outside of the liquid inlet tube 7. The shunt tube 701 and the liquid inlet tube 7 are connected to each other. A rectangular shunt frame 14 is fixedly installed on the top of the inner side of the detection box 4. The end of the shunt tube 701 away from the liquid inlet tube 7 is fixedly connected to the rectangular shunt frame 14.

[0044] In the embodiment of the present invention, the shunt pipe 701 is used to transport cleaning water to the interior of the detection box 4. When the equipment is cleaned after the test is completed, the control valve 702 can be opened to allow the cleaning water to enter the detection box 4 through the shunt pipe 701. Then, the negative pressure device 11 is operated to generate negative pressure in the drainage pipe 12 and the liquid guide tube 13, thereby extracting the solution inside the detection box 4 to achieve the cleaning process;

[0045] In the embodiment of the present invention, specifically, a plurality of leakage holes are symmetrically opened at the bottom of the rectangular diverter frame 14 to allow the cleaning water to flow downward along the inner wall of the detection box 4 to ensure the cleaning effect;

[0046] In the embodiment of the present invention, the diverter tube 701 is connected to the rectangular diverter frame 14, and the diverter tube 701 is used to transport the cleaning water to the interior of the detection box 4 through the rectangular diverter frame 14;

[0047] In the embodiment of the present invention, the shunt tube 701 and the elastic tube 1301 are both retractable tubes. The elastic tube 1301 cooperates with each other to avoid affecting the pulling out of the detection box 4.

[0048] In the embodiment of the present invention, a control valve 702 is fixedly installed at the end of the shunt pipe 701. The control valve 702 is an existing device and will not be described in detail here.

[0049] In the embodiment of the present invention, a control panel 3 is fixedly mounted on the outside of the body 1, and a pull plate 5 is fixedly mounted on the outside of the detection box 4 for pulling out the detection box 4. The control panel 3 is controlled based on an existing PLC control module.

[0050] In the embodiment of the present invention, further, a vibration motor 9 is fixedly installed on the outside of the mixing box 8 to drive the liquid inside the mixing box 8 to vibrate and achieve the mixing operation. The vibration motor 9 is an existing device and will not be described in detail here. Example 2:

[0051] Based on the first embodiment, a drug residue detection device includes a body 1, an upper cover 2 is fixedly installed on the top surface of the body 1, a feed pipe 6 and a liquid inlet pipe 7 are connected to the upper cover 2, and a mixing box 8 is installed inside the body 1, and the mixing box 8 is used to mix the solution to be detected;

[0052] In the embodiment of the present invention, specifically, during the test, the object to be tested is introduced into the mixing tank 8 through the feed pipe 6, and then a certain amount of water is added to the mixing tank 8 through the liquid inlet pipe 7 to mix the residual drug in the object to be tested and the water, and then the drug components in the water are tested;

[0053] In the embodiment of the present invention, specifically, a detection box 4 is installed inside the body 1. The detection box 4 is installed directly below the mixing box 8. A drainage pipe 12 is connected to the bottom of the mixing box 8. A plugging head 1201 is fixedly installed at the end of the drainage pipe 12. A liquid guide tube 13 is connected to the outside of the drainage pipe 12. The liquid guide tube 13 is used to transport the solution to be tested to the interior of the detection box 4.

[0054] In the embodiment of the present invention, specifically, a valve is installed inside the drain pipe 12 to control the water inside the mixing tank 8 to enter the drain pipe 12;

[0055] In the embodiment of the present invention, when the residual drug inside the test object is mixed with water, the valve is opened, and the test solution inside the mixing box 8 enters the drainage pipe 12. As the water level inside the drainage pipe 12 rises, the test solution enters the test box 4 through the liquid guide tube 13 to complete the detection operation.

[0056] In the embodiment of the present invention, specifically, the detection box 4 is an existing device, and a detection test paper is placed inside it for performing a detection operation on the solution to be detected, which will not be described in detail here;

[0057] In the embodiment of the present invention, a conical filter 1202 is fixedly installed inside the drain pipe 12 for filtering out impurities in the solution. An elastic ring 1203 is fixedly installed at the end of the conical filter 1202, and a plurality of sealing sheets 1204 are fixedly installed inside the elastic ring 1203.

[0058] In the embodiment of the present invention, the conical filter 1202 is provided to allow the solution to be tested to complete a filtration operation when entering the drainage pipe 12, and to complete precipitation when the solution to be tested enters the drainage pipe 12, thereby further preventing impurities from entering the detection box 4 through the liquid guide tube 13, thereby improving the detection accuracy of the device;

[0059] In the embodiment of the present invention, a negative pressure device 11 is fixedly installed inside the body 1, a connecting pipe 1101 is connected between the negative pressure device 11 and the drain pipe 12, and a one-way valve 1102 is fixedly installed inside the connecting pipe 1101;

[0060] In the embodiment of the present invention, after the equipment completes a detection operation, the negative pressure device 11 is operated to extract impurities and solution from the inside of the drainage pipe 12 and the mixing liquid box 8, thereby completing the cleaning operation. During the cleaning process, the conical filter screen 1202 can be forced to open as the negative pressure device 11 operates, thereby completing the automatic cleaning operation of the filtered material. During the cleaning process, the cleaning water is introduced into the mixing liquid box 8 through the liquid inlet pipe 7 to complete the flushing process.

[0061] In the embodiment of the present invention, compared with the traditional cleaning method, it is more convenient and can effectively improve the cleaning effect of the equipment, avoiding drug residues that affect the accuracy of subsequent detection;

[0062] In the embodiment of the present invention, an elastic tube 1301 is fixedly installed at the end of the liquid guiding tube 13, and the end of the elastic tube 1301 extends into the interior of the detection box 4;

[0063] In the embodiment of the present invention, a shunt tube 701 is fixedly installed on the outside of the liquid inlet tube 7. The shunt tube 701 and the liquid inlet tube 7 are connected to each other. A rectangular shunt frame 14 is fixedly installed on the top of the inner side of the detection box 4. The end of the shunt tube 701 away from the liquid inlet tube 7 is fixedly connected to the rectangular shunt frame 14.

[0064] In the embodiment of the present invention, the shunt pipe 701 is used to transport cleaning water to the interior of the detection box 4. When the equipment is cleaned after the test is completed, the control valve 702 can be opened to allow the cleaning water to enter the detection box 4 through the shunt pipe 701. Then, the negative pressure device 11 is operated to generate negative pressure in the drainage pipe 12 and the liquid guide tube 13, thereby extracting the solution inside the detection box 4 to achieve the cleaning process;

[0065] In the embodiment of the present invention, specifically, a plurality of leakage holes are symmetrically opened at the bottom of the rectangular diverter frame 14 to allow the cleaning water to flow downward along the inner wall of the detection box 4 to ensure the cleaning effect;

[0066] In the embodiment of the present invention, the diverter tube 701 is connected to the rectangular diverter frame 14, and the diverter tube 701 is used to transport the cleaning water to the interior of the detection box 4 through the rectangular diverter frame 14;

[0067] In the embodiment of the present invention, the shunt tube 701 and the elastic tube 1301 are both retractable tubes. The elastic tube 1301 cooperates with each other to avoid affecting the pulling out of the detection box 4.

[0068] In the embodiment of the present invention, a control valve 702 is fixedly installed at the end of the shunt pipe 701. The control valve 702 is an existing device and will not be described in detail here.

[0069] In the embodiment of the present invention, a control panel 3 is fixedly mounted on the outside of the body 1, and a pull plate 5 is fixedly mounted on the outside of the detection box 4 for pulling out the detection box 4. The control panel 3 is controlled based on an existing PLC control module.

[0070] In the embodiment of the present invention, a vibration motor 9 is further fixedly installed on the outside of the mixing box 8 to drive the liquid inside the mixing box 8 to vibrate and achieve the mixing operation. The vibration motor 9 is an existing device and will not be described in detail here.

[0071] In the embodiment of the present invention, two bottom substrates 10 are fixedly installed inside the body 1, and multiple support springs 1001 are fixedly installed between the bottom sides of the mixing box 8 and the bottom substrate 10. Through the cooperation of the support springs 1001, the mixing effect of the solution inside the mixing box 8 can be further ensured;

[0072] In the embodiment of the present invention, a mixing rod 801 is rotatably mounted on the middle portion of the top surface of the mixing box 8, a mixing rack 8011 is fixedly mounted on the outer side of the mixing rod 801, and an arc-shaped mixing plate 8012 is fixedly mounted on the end of the mixing rack 8011. Elastic scrapers 8013 are fixedly mounted on both ends of the side of the arc-shaped mixing plate 8012. A plurality of limiting shafts 8014 are fixedly mounted on the middle portion of the side of the arc-shaped mixing plate 8012, and the ends of the limiting shafts 8014 are rotatably connected to rolling wheels 8015.

[0073] In the embodiment of the present invention, a servo motor 802 is fixedly installed on the outside of the mixing box 8, and the output end of the servo motor 802 is connected to the end of the mixing rod 801 via a coupling;

[0074] In the embodiment of the present invention, when the solution inside the mixing box 8 is mixed, the servo motor 802 is operated to drive the mixing rod 801 and the mixing rack 8011 to reciprocate inside the mixing box 8. The elastic scraper 8013 cooperates with the crushing wheel 8015 to crush the object to be tested during the mixing process so that the medicine inside can be evenly mixed with the water. At the same time, the elastic scraper 8013 can improve the cleaning effect of the inside of the mixing box 8, avoid the residue of medicine and impurities, and improve the use effect of the equipment.

[0075] In the embodiment of the present invention, specifically, the servo motor 802 is an existing forward and reverse motor, which is used to drive the mixing rod 801 to reciprocate inside the mixing box 8;

[0076] In the embodiment of the present invention, specifically, a plurality of elastic scrapers 8013 are staggeredly installed to scrape off the objects to be tested and clean the interior of the mixing liquid box 8 .

[0077] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0078] The above is a detailed description of an embodiment of the present invention. However, the content is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A drug residue detection device, comprising a body (1), characterized in that: An upper cover (2) is fixedly mounted on the top surface of the machine body (1), and a feed pipe (6) and a liquid inlet pipe (7) are connected to the interior of the upper cover (2). A liquid mixing box (8) is mounted inside the machine body (1), and the liquid mixing box (8) is used to mix the solution to be tested; A detection box (4) is installed inside the body (1), and the installation position of the detection box (4) is located directly below the mixing box (8). The bottom of the mixing box (8) is connected to a drainage pipe (12), and a plugging head (1201) is fixedly installed at the end of the drainage pipe (12). The outer side of the drainage pipe (12) is connected to a liquid guide pipe (13), and the liquid guide pipe (13) is used to transport the solution to be tested to the inside of the detection box (4); A conical filter screen (1202) is fixedly installed inside the drainage pipe (12) for filtering out impurities in the solution; an elastic ring (1203) is fixedly installed at the end of the conical filter screen (1202), and a plurality of sealing sheets (1204) are fixedly installed inside the elastic ring (1203); A negative pressure device (11) is fixedly installed inside the machine body (1), a connecting pipe (1101) is connected between the negative pressure device (11) and the discharge pipe (12), and a one-way valve (1102) is fixedly installed inside the connecting pipe (1101); A shunt pipe (701) is fixedly mounted on the outside of the liquid inlet pipe (7), and the shunt pipe (701) and the liquid inlet pipe (7) are in communication with each other. A rectangular shunt frame (14) is fixedly mounted on the top of the inner side of the detection box (4), and one end of the shunt pipe (701) away from the liquid inlet pipe (7) is fixedly connected to the rectangular shunt frame (14); The diverter pipe (701) and the rectangular diverter frame (14) are in communication with each other, and the diverter pipe (701) is used to transport the cleaning water to the interior of the detection box (4) through the rectangular diverter frame (14); A control valve (702) is fixedly installed at the end of the diversion pipe (701); A control panel (3) is fixedly mounted on the outer side of the machine body (1), and a pull plate (5) is fixedly mounted on the outer side of the detection box (4) for pulling out the detection box (4); A vibration motor (9) is fixedly mounted on the outside of the liquid mixing box (8) for driving the liquid inside the liquid mixing box (8) to vibrate, thereby achieving liquid mixing operations.

2. A drug residue detection device according to claim 1, characterized in that: An elastic tube (1301) is fixedly mounted on the end of the liquid guiding tube (13), and the end of the elastic tube (1301) extends into the interior of the detection box (4).

3. A drug residue detection device according to claim 1, characterized in that: Two bottom base plates (10) are fixedly installed inside the machine body (1), and a plurality of support springs (1001) are fixedly installed between the bottom sides of the mixing liquid box (8) and the bottom base plates (10).

4. The drug residue detection device according to claim 1, wherein: A mixing rod (801) is rotatably mounted on the middle of the top surface of the mixing liquid box (8), a mixing rack (8011) is fixedly mounted on the outer side of the mixing rod (801), and an arc-shaped mixing plate (8012) is fixedly mounted on the end of the mixing rack (8011), elastic scrapers (8013) are fixedly mounted on both ends of the side of the arc-shaped mixing plate (8012), and a plurality of limiting shafts (8014) are fixedly mounted on the middle of the side of the arc-shaped mixing plate (8012), and the ends of the limiting shafts (8014) are rotatably connected to rolling wheels (8015).

5. The drug residue detection device according to claim 4, characterized in that: A servo motor (802) is fixedly mounted on the outside of the liquid mixing box (8), and an output end of the servo motor (802) is connected to an end of the mixing rod (801) via a coupling.

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