Rapid detection device for food pesticides and heavy metals

Abstract

The application discloses a rapid detection equipment for grain pesticide and heavy metal, and relates to the field of food safety detection, which comprises a base, a driving motor is arranged in the base, an output shaft end of the driving motor is provided with a rotating rod, a rotating plate is arranged on the top of the rotating rod, and a circular groove is arranged on the surface of the rotating plate. The rapid detection equipment for grain pesticide and heavy metal is characterized by the sleeve, the wave-shaped ring column, the driving motor and the rotating plate, so that the wave-shaped ring column moves away from the sleeve, the sleeve falls to the bottom end due to gravity, at this time, there is no force in the vertical direction, the reagent in the test tube directly performs centrifugal motion, the upper layer is more clear, and the test instrument can be directly placed in the detection instrument for detection, so that the operation steps of detection are simplified, the pesticide residue and heavy metal detection can be simultaneously processed, the processing speed is accelerated, and the equipment is more convenient and fast to use.

Description

Technical Field

[0001] This invention relates to the field of food safety testing, and in particular to a rapid detection device for pesticides and heavy metals in grains. Background Technology

[0002] Rice is a staple food in our daily lives, providing us with essential nutrients such as sugar, protein, vitamins, dietary fiber, and minerals. However, with the development of the modern economy and the continuous progress of industrialization, heavy metal pollution has become increasingly serious. It enters food crops through soil and water resources, and then into people's bodies, seriously affecting their health. Therefore, it is necessary to strengthen the detection of heavy metals and pesticide residues in rice.

[0003] Pesticide residue detectors are mainly used to detect pesticide residues in agricultural products such as vegetables, fruits, and grains. Food heavy metal detectors are mainly used to detect heavy metal content in agricultural products such as vegetables, fruits, and grains. Before testing, the sample needs to be ground, a certain amount of powdered sample needs to be taken out, the corresponding reagent needs to be added to dissolve it, and the mixture needs to be shaken to ensure complete dissolution. Depending on the application, additional reagents may need to be added before centrifugation. The reagents for detecting agricultural products and heavy metals are different, so multiple steps are required, which not only slows down the testing speed but also increases the risk of operational errors. Summary of the Invention

[0004] The main objective of this invention is to provide a rapid detection device for pesticides and heavy metals in grains, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a rapid detection device for pesticides and heavy metals in grains, comprising a base, a drive motor installed inside the base, a rotating rod installed at the end of the output shaft of the drive motor, a rotating plate installed at the top of the rotating rod, a circular groove opened on the surface of the rotating plate, a clamping assembly movably installed inside the circular groove for fixing reaction test tubes, a wave-shaped ring column installed inside the base, and a lifting assembly installed inside the base for moving the wave-shaped ring column up and down.

[0006] The clamping assembly includes a sleeve, the top of the inner wall of the sleeve is provided with several grooves, a fixing spring and an arc-shaped block are installed inside the grooves, one end of the fixing spring is fixed to the surface of the arc-shaped block, the other end of the fixing spring is fixed inside the groove, and part of the arc-shaped block is located inside the circular groove.

[0007] The sleeve includes a spherical shell base plate, on the surface of which are mounted several vertical plates. The cross-section of the vertical plates is set to arc and arranged in a ring on the surface of the spherical shell base plate. A fixing pipe is installed above the vertical plates and is installed inside the circular groove.

[0008] The surface of the rotating plate is provided with an extension groove, the center of the extension groove and the center of the circular groove are located at the same position, the interior of the extension groove is connected to the interior of the circular groove, and an extension ring plate is fixedly sleeved on the surface of the fixed tube, the extension ring plate is located inside the extension groove.

[0009] The lifting assembly includes a slot, which is formed on the lower surface of the corrugated ring column. One side of the inner wall of the slot is set as an inclined surface. A locking block is set inside the slot. One side of the locking block is also set as an inclined surface. A push rod is installed on the surface of the locking block. One end of the push rod moves through the base and extends to the outside of the base.

[0010] The number of the card slots is set to two, which are centrally symmetrically arranged on the lower surface of the wave-shaped ring column. The number of the card blocks and push rods is also set to two, and both push rods move through the base.

[0011] The base has a fixed cover installed inside, the drive motor is installed inside the fixed cover, the surface of the fixed cover is circular, and a toothed ring is movably fitted on the surface of the fixed cover. The surfaces of the two push rods are provided with several linearly arranged toothed grooves, and the teeth of the toothed ring are engaged inside the toothed grooves.

[0012] The rotating plate has an installation groove on its side, a marking post is installed inside the installation groove, a fixed shaft is installed on the surface of the marking post, the fixed shaft is movably installed inside the installation groove, and different markings are set on the surface of the marking post.

[0013] The mounting groove has two inclined grooves inside, and the angle between the two inclined grooves is a right angle. The surface of the fixed shaft has a rectangular groove, and a limit spring is installed inside the rectangular groove. One end of the limit spring is equipped with an inclined block, which is stuck inside the inclined groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In this invention, a sleeve, a wave-shaped ring column, a drive motor, and a rotating plate are used to add the required dissolution agent into the test tube. Different types of reactants are used for pesticides and heavy metals. The wave-shaped ring column is then moved below the sleeve, ensuring that the bottom of all sleeves is against the surface of the wave-shaped ring column. The rotating plate rotates, causing all sleeves to rotate, with the bottom of each sleeve always against the surface of the wave-shaped ring column. When the sleeve moves from the crest to the trough, the test tube moves from the crest to the trough. At this point, the test tube is subjected to a vertical force and a centrifugal force, thus allowing for the dissolution of the test tube. Vibration ensures more thorough dissolution inside the test tube. Then, the reagent for heavy metals or pesticides is added directly to the test tube, allowing the heavy metals and pesticides to "manifest." At this point, the wave-shaped ring column moves away from the sleeve, and the sleeve falls to the bottom due to gravity. Since there is no vertical force, the reagents inside the test tube undergo centrifugal motion, making the upper layer clearer. This allows for direct placement into the detector for testing, simplifying the detection process. It can simultaneously process pesticide residues and heavy metals, speeding up the processing and making it more convenient and faster to use.

[0015] In this invention, by setting a spherical bottom plate, vertical plates, and a fixing tube, the spherical bottom plate of the sleeve provides a certain supporting force to ensure the stability of the test tube. Since it is composed of multiple vertical plates with a certain gap between them, the mixing and centrifugation of the reaction agent inside the test tube can be easily observed, facilitating real-time observation and adjustment by the experimenter. At the same time, the top is set as a fixing tube to facilitate the installation of arc-shaped blocks to fix the test tube, ensuring that the process is transparent and controllable.

[0016] In this invention, by setting a push rod, a locking block, and a locking slot, pushing the push rod will cause the locking block to move towards the inclined side. At this time, the inclined surface of the locking block will squeeze the inclined surface of the locking slot, and slowly move to the outside of the locking slot. At this time, the lower surface of the wave-shaped ring column will abut against the surface of the locking block, and the wave-shaped ring column will move upward a certain distance. When the test tube rolls on its surface, the locking block will not return to the inside of the locking slot due to friction. Moreover, the structure is very simple and easy to operate.

[0017] In this invention, by setting up a locking block, a push rod, a toothed groove, and a gear, when one push rod is pushed to move, the toothed ring is locked inside the toothed groove, thus driving the toothed ring to rotate. During the rotation, the other push rod will move. At this time, it is not necessary to push two push rods at the same time, which makes it more convenient to use. Since the support stability of one locking block is poor, two locking blocks are used to ensure better stability of the wave-shaped ring column. Both push rods move through the base.

[0018] In this invention, by setting a marking post, a fixed shaft, and a wedge block, it is determined whether the sleeve at the corresponding position is for pesticide residue or heavy metal detection. Then, the marking post can be rotated so that the marking text is exposed outside the mounting groove. During the rotation, the fixed shaft drives the wedge block to rotate, and the wedge block abuts against the wedge groove, causing the limit spring to compress and slowly rotate to the inside of another wedge groove. At this time, the stability of the marking post can be ensured during the rotation of the rotating plate. The surface of the marking post is marked with two marks, namely pesticide residue and heavy metal, to prevent the reagent from being dripped incorrectly during the rotation of the rotating plate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the rapid detection equipment for pesticides and heavy metals in grains according to the present invention; Figure 2 This is a schematic diagram of the circular groove portion of the rapid detection equipment for grain pesticides and heavy metals of the present invention. Figure 3 This is a schematic diagram of the groove position portion of the rapid detection equipment for grain pesticides and heavy metals of the present invention; Figure 4 This is a schematic diagram of the drive motor position part of the rapid detection equipment for grain pesticides and heavy metals of the present invention. Figure 5 This is a schematic diagram of the push rod position part of the rapid detection equipment for grain pesticides and heavy metals of the present invention; Figure 6 This is a schematic diagram of the toothed ring position portion of the rapid detection device for grain pesticides and heavy metals of the present invention. Figure 7 This is a schematic diagram of the slot position part of the rapid detection equipment for grain pesticides and heavy metals of the present invention; Figure 8 This is a schematic diagram of the limiting spring position part of the rapid detection equipment for grain pesticides and heavy metals of the present invention.

[0020] In the diagram: 1. Base; 2. Drive motor; 3. Rotating rod; 4. Rotating plate; 5. Circular groove; 6. Wave-shaped ring column; 7. Groove; 8. Fixing spring; 9. Arc-shaped block; 10. Spherical shell base plate; 11. Vertical plate; 12. Fixing tube; 13. Extended groove; 14. Extended ring plate; 15. Slot; 16. Slot block; 17. Push rod; 18. Fixing cover; 19. Gear ring; 20. Gear groove; 21. Mounting groove; 22. Marking post; 23. Fixing shaft; 24. Inclined groove; 25. Rectangular groove; 26. Limiting spring; 27. Inclined block. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figure 1-8 As shown, the device includes a base 1, which is a circular shell shape. A drive motor 2 is installed inside the base 1, positioned at the center of the base 1. A rotating rod 3 is installed at the end of the output shaft of the drive motor 2. The diameter of the rotating rod 3 is smaller than the diameter of the output shaft of the drive motor 2. The rotating rod 3 is vertical. A rotating plate 4 is installed on the top of the rotating rod 3. The rotating plate 4 is circular, with its center aligned vertically with the center of the rotating rod 3. At least six circular grooves 5 are formed on the surface of the rotating plate 4 in a circular array. A clamping assembly is movably installed inside each of the circular grooves 5 to fix the reaction tubes, ensuring that the tubes remain stable inside the clamping assembly during vibration or centrifugation. A wave-shaped ring column 6 is installed inside the base 1. The outer diameter of the wave-shaped ring column 6 is smaller than the inner diameter of the base 1, while the inner diameter of the wave-shaped ring column 6 is larger than the furthest straight-line distance from the surface of the drive motor 2. A lifting assembly is installed inside the base 1 to allow the wave-shaped ring column 6 to move up and down, but the wave-shaped ring column 6 always remains inside the base 1.

[0023] In use, first place the powdered grain into the test tube; two test tubes are sufficient. Then, place the test tubes in the clamping assembly position, ensuring stability. Next, add the required dissolving agent directly into the test tube. Different types of agents are used for pesticides and heavy metals. Then, activate the lifting assembly to move the wave-shaped ring column 6 below the clamping assembly, ensuring the bottom of all clamping components is against the surface of the wave-shaped ring column 6. Next, activate the drive motor 2. The output shaft of the drive motor 2 drives the rotating rod 3 to rotate, which in turn drives the rotating plate 4 to rotate. This allows all clamping components to rotate around the rotating rod 3. Because the bottom of the clamping components is always against the surface of the wave-shaped ring column 6, when the clamping components move from the crest to the trough, the test tube will move from the crest to the trough. The tube will be subjected to vertical force and centrifugal force, which will vibrate the test tube to ensure more complete dissolution inside. After dissolution, the drive motor 2 can be paused, and then the heavy metal or pesticide reaction agent can be directly added into the test tube so that the heavy metal and pesticide can be "discovered". At this time, simply activate the lifting component to move the wave ring column 6 away from the clamping component. The clamping component will fall to the bottom due to gravity. Then, the drive motor 2 will be restarted to directly drive the rotating plate 4 to rotate. At this time, there is no vertical force, and the reagent inside the test tube will directly undergo centrifugal motion, making the upper layer clearer. It can then be directly placed into the detector for detection, simplifying the detection operation steps and enabling simultaneous processing of pesticide residues and heavy metal detection, speeding up the processing speed and making it more convenient and faster to use.

[0024] The clamping assembly includes a sleeve, and the top of the inner wall of the sleeve is provided with several grooves 7. In this embodiment, the number of grooves 7 is set to three. A fixing spring 8 and an arc-shaped block 9 are installed inside the groove 7. Since the surface of the test tube is arc-shaped, the clamping stability of the test tube can be guaranteed, and the pressure on the surface of the test tube can be reduced. One end of the fixing spring 8 is fixed to the surface of the arc-shaped block 9, and the other end of the fixing spring 8 is fixed inside the groove 7. Part of the arc-shaped block 9 is located inside the circular groove 5. When installing the test tube, the bottom of the test tube is directly pressed between the three arc-shaped blocks 9. At this time, the fixing spring 8 is in a continuously compressed state, and the compression force of the fixing spring 8 can be used to stabilize the test tube inside the sleeve.

[0025] The sleeve includes a spherical bottom plate 10, which is hemispherical. Several vertical plates 11 are installed on the surface of the spherical bottom plate 10. The cross-section of the vertical plates 11 is arc-shaped and arranged in a ring on the surface of the spherical bottom plate 10. A fixing pipe 12 is installed above the vertical plates 11 and is installed inside the circular groove 5.

[0026] When the test tube is placed inside the sleeve, the spherical bottom plate 10 provides a certain support force to ensure the stability of the test tube. Since it is composed of multiple vertical plates 11 in the middle, and a certain gap is set between the vertical plates 11, the mixing and centrifugation of the reaction agent inside the test tube can be easily seen, which is convenient for the experimenter to observe and adjust in real time. At the same time, the top is set as a fixing tube 12 to facilitate the installation of the arc block 9 to fix the test tube, ensuring that the process is transparent and controllable.

[0027] The surface of the rotating plate 4 is provided with an extension groove 13, which is circular. The center of the extension groove 13 and the center of the circular groove 5 are located at the same position. The interior of the extension groove 13 is connected to the interior of the circular groove 5. An extension ring plate 14 is fixedly sleeved on the surface of the fixed tube 12. The extension ring plate 14 is located inside the extension groove 13. When the surface of the wave ring column 6 does not contact the bottom of the sleeve, it needs to rely on the weight of the sleeve itself to be located on the surface of the rotating plate 4. Therefore, when the extension ring plate 14 is located inside the extension groove 13, it can prevent the sleeve from falling off and does not prevent the wave ring column 6 from pushing it upward.

[0028] The lifting assembly includes a slot 15, which is formed on the lower surface of the wave-shaped ring column 6. One side of the inner wall of the slot 15 is set as an inclined surface. A locking block 16 is provided inside the slot 15. One side of the locking block 16 is also set as an inclined surface. A push rod 17 is installed on the surface of the locking block 16. One end of the push rod 17 moves through the base 1 and extends to the outside of the base 1.

[0029] When in use, simply push the push rod 17, which will cause the locking block 16 to move toward the inclined side. At this time, the inclined surface of the locking block 16 will press against the inclined surface of the slot 15, and slowly move to the outside of the slot 15. At this time, the lower surface of the wave-shaped ring column 6 will abut against the surface of the locking block 16, and the wave-shaped ring column 6 will move upward a certain distance. When the test tube rolls on its surface, the locking block 16 will not return to the inside of the slot 15 due to friction. The structure is very simple, stable, and easy to operate.

[0030] Two slots 15 are provided, symmetrically arranged on the lower surface of the wave-shaped ring column 6. Two blocks 16 and two push rods 17 are also provided. Since the support stability of one block 16 is poor, two blocks 16 are used to ensure better stability of the wave-shaped ring column 6. Both push rods 17 move through the base 1.

[0031] A fixing cover 18 is installed inside the base 1, and the drive motor 2 is installed inside the fixing cover 18. The surface of the fixing cover 18 is circular, and the center of the fixing cover 18 and the center of the base 1 are on the same vertical line. The fixing cover 18 is fixedly installed. A toothed ring 19 is movably sleeved on the surface of the fixing cover 18. It can be installed by bearings to ensure that the toothed ring 19 will not slide up and down and to ensure that the toothed ring 19 is in a stable state. The surfaces of the two push rods 17 are provided with a number of linearly arranged toothed grooves 20, and the teeth of the toothed ring 19 are stuck inside the toothed grooves 20.

[0032] When in use, when one push rod 17 is pushed to move, the toothed ring 19 is locked inside the toothed groove 20, which can drive the toothed ring 19 to rotate. During the rotation, the other push rod 17 will be moved. At this time, it is not necessary to push both push rods 17 at the same time, which makes it more convenient to use.

[0033] The rotating plate 4 has an installation groove 21 on its side. A marking post 22 is installed inside the installation groove 21. Two markings are set on the surface of the marking post 22, namely pesticide residue and heavy metal, to prevent the reaction agent from being dripped into the wrong place during the rotation of the rotating plate 4. A fixing shaft 23 is installed on the surface of the marking post 22. The fixing shaft 23 is movably installed inside the installation groove 21. The marking post 22 has different markings on its surface.

[0034] The mounting groove 21 has two inclined grooves 24 inside, and the angle between the two inclined grooves 24 is a right angle. The surface of the fixed shaft 23 has a rectangular groove 25. A limit spring 26 is installed inside the rectangular groove 25. A wedge 27 is installed at one end of the limit spring 26 and the wedge 27 is stuck inside the inclined groove 24.

[0035] When using it, first determine whether the sleeve at the corresponding position is for pesticide residue or heavy metal detection. Then, rotate the marking post 22 so that the marking text is exposed on the outside of the mounting groove 21. During the rotation, the fixed shaft 23 drives the inclined block 27 to rotate. The inclined block 27 abuts against the inclined groove 24, causing the limit spring 26 to compress and slowly rotate into the inside of another inclined groove 24. At this time, the stability of the marking post 22 can be ensured during the rotation of the rotating plate 4.

[0036] It should be noted that this invention is for a rapid detection device for pesticides and heavy metals in grains. In use, powdered grain is placed inside two test tubes. The test tubes are then placed in the sleeve position to ensure stability. The required dissolving agent is then added directly into the test tube. The type of agent used for pesticides and heavy metals differs. Next, simply push the push rod 17. Push rod 17 will move the locking block 16 towards the inclined side. The inclined surface of the locking block 16 will then press against the inclined surface of the locking groove 15, slowly moving it to the outside of the locking groove 15. At this point, the lower surface of the wave-shaped ring column 6 will abut against the surface of the clamping block 16, causing the wave-shaped ring column 6 to move upward a certain distance. Furthermore, as the test tube rolls on its surface, friction will not cause the clamping block 16 to return to the inside of the clamping slot 15. Since the toothed ring 19 is clamped inside the toothed groove 20, it can rotate. During this rotation, it will move another push rod 17. At this point, it is not necessary to push both push rods 17 simultaneously, allowing the wave-shaped ring column 6 to move to the bottom of the sleeve, ensuring that the bottom of all clamping components abuts against the surface of the wave-shaped ring column 6. Then, the drive is activated. The output shaft of motor 2 drives the rotating rod 3 to rotate, which in turn drives the rotating plate 4 to rotate. This causes all the sleeves to rotate around the rotating rod 3. Since the bottom of the sleeve is always against the surface of the wave-shaped ring column 6, when the clamping assembly moves from the crest to the trough, the test tube will also move from the crest to the trough. At this point, the test tube will be subjected to vertical force and centrifugal force, which vibrates the test tube, ensuring more thorough dissolution inside. After dissolution is complete, motor 2 can be paused, and then heavy metals or other chemicals can be added directly to the test tube. It is a pesticide reactant that allows heavy metals and pesticides to "show up". At this time, you only need to start the lifting component to move the wave ring column 6 away from the clamping component. The clamping component will fall to the bottom due to gravity. At this time, the drive motor 2 will start again and directly drive the rotating plate 4 to rotate. At this time, there is no vertical force, and the reagent inside the test tube will directly undergo centrifugal motion, making the upper layer clearer. It can then be directly put into the detector for detection, which simplifies the detection operation steps and can simultaneously process pesticide residues and heavy metal detection, speeding up the processing speed and making it more convenient and faster to use.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A rapid detection device for pesticides and heavy metals in grains, comprising a base (1), wherein a drive motor (2) is installed inside the base (1), a rotating rod (3) is installed at the end of the output shaft of the drive motor (2), and a rotating plate (4) is installed on the top of the rotating rod (3), characterized in that: The rotating plate (4) has a circular groove (5) on its surface. A clamping assembly is movably installed inside the circular groove (5) for fixing the reaction tube. A wave-shaped ring column (6) is installed inside the base (1). A lifting assembly is installed inside the base (1) for moving the wave-shaped ring column (6) up and down. The lifting assembly includes a slot (15) which is formed on the lower surface of the wave-shaped ring column (6). One side of the inner wall of the slot (15) is set as an inclined surface. A locking block (16) is provided inside the slot (15). One side of the locking block (16) is also set as an inclined surface. A push rod (17) is installed on the surface of the locking block (16). One end of the push rod (17) moves through the base (1) and extends to the outside of the base (1). There are two slots (15) which are centrally symmetrically arranged on the lower surface of the wave-shaped ring column (6). The number of the locking block (16) and the push rod (17) is also set to two. Both of the push rods (17) are movable through the base (1). The base (1) is equipped with a fixing cover (18). The drive motor (2) is installed inside the fixing cover (18). The surface of the fixing cover (18) is set to be circular. A toothed ring (19) is movably sleeved on the surface of the fixing cover (18). The surfaces of the two push rods (17) are provided with several linearly arranged toothed grooves (20). The teeth of the toothed ring (19) are locked inside the toothed grooves (20).

2. The rapid detection device for pesticides and heavy metals in grains according to claim 1, characterized in that: The clamping assembly includes a sleeve, and the top of the inner wall of the sleeve is provided with several grooves (7). A fixing spring (8) and an arc block (9) are installed inside the grooves (7). One end of the fixing spring (8) is fixed to the surface of the arc block (9), and the other end of the fixing spring (8) is fixed inside the groove (7). Part of the arc block (9) is located inside the circular groove (5).

3. The rapid detection device for pesticides and heavy metals in grains according to claim 2, characterized in that: The sleeve includes a spherical shell base plate (10), and a number of vertical plates (11) are installed on the surface of the spherical shell base plate (10). The cross section of the vertical plates (11) is set to be arc-shaped and arranged in a ring on the surface of the spherical shell base plate (10). A fixing pipe (12) is installed above the vertical plates (11) and the fixing pipe (12) is installed inside the circular groove (5).

4. The rapid detection device for pesticides and heavy metals in grains according to claim 3, characterized in that: The surface of the rotating plate (4) is provided with an extension groove (13), the center of the extension groove (13) and the center of the circular groove (5) are located at the same position, the interior of the extension groove (13) is connected to the interior of the circular groove (5), and an extension ring plate (14) is fixedly sleeved on the surface of the fixed tube (12), the extension ring plate (14) is located inside the extension groove (13).

5. The rapid detection device for pesticides and heavy metals in grains according to claim 1, characterized in that: The rotating plate (4) has an installation groove (21) on its side. A marking post (22) is installed inside the installation groove (21). A fixing shaft (23) is installed on the surface of the marking post (22). The fixing shaft (23) is movably installed inside the installation groove (21). Different markings are set on the surface of the marking post (22).

6. The rapid detection device for pesticides and heavy metals in grains according to claim 5, characterized in that: The mounting groove (21) has two inclined grooves (24) inside, and the angle between the two inclined grooves (24) is a right angle. The surface of the fixed shaft (23) has a rectangular groove (25). A limit spring (26) is installed inside the rectangular groove (25). A wedge (27) is installed at one end of the limit spring (26), and the wedge (27) is stuck inside the inclined groove (24).

Images