Sampling inspection sampling device for food meat production

Abstract

The invention discloses a sampling inspection sampling device for food meat production, which comprises a conveying belt for placing food meat, a mounting rack is arranged on the conveying belt, an air cylinder is arranged on the mounting rack, a sampling needle is arranged at one end, facing the conveying belt, of a piston rod of the air cylinder, a sleeve is movably arranged on the piston rod, and the sampling needle is positioned in the sleeve. A piston plate is arranged at the connecting position of the piston rod and the sampling needle and located in the sleeve, a spring is arranged between the piston plate and the inner wall of the bottom of the sleeve, a pressing plate is arranged at the bottom of the sleeve and abuts against or is separated from food meat on the conveying belt along with movement of the air cylinder, and the sleeve ascends and descends on the piston rod along with the pressing plate. An electromagnetic valve is further arranged on the sampling needle, the interior of the sampling needle is communicated with the interior of the sleeve when the electromagnetic valve is opened, and a one-way valve is further arranged on the side wall of the sleeve. Compared with the prior art, an operator using the automatic sampling device can automatically complete sampling without contacting food meat, so that the labor intensity is reduced, and the sampling speed is increased.

Description

Technical Field

[0001] The invention relates to the technical field of food processing, in particular to a random inspection sampling device for food meat production. Background Art

[0002] With the rapid progress of the food industry, food safety issues have gradually become the focus of widespread attention from all walks of life. In the meat processing industry, in order to ensure product quality and safety, it is necessary to regularly sample meat products on the production line to monitor their core parameters such as microbial indicators and chemical composition. The traditional manual sampling method is not only inefficient, but also requires contact with food meat during operation, which is easy to cause cross-contamination, and thus has an adverse effect on the accuracy of the test results. In view of this, the development of an efficient, accurate and hygienic automated sampling device has become an urgent need for the development of this industry. Summary of the invention

[0003] Aiming at the problem that manual sampling of food meat in the prior art is inefficient and easy to contaminate the food meat, the present invention provides a random inspection sampling device for food meat production.

[0004] The technical solution of the present invention is to disclose a random inspection sampling device for food meat production, including a conveyor belt for placing food meat, a mounting frame is provided on the conveyor belt, a cylinder is provided on the mounting frame, a sampling needle is provided at one end of the piston rod of the cylinder facing the conveyor belt, a sleeve is movably provided on the piston rod, the sampling needle is located in the sleeve, a piston plate is provided at the connection between the piston rod and the sampling needle, the piston plate is located in the sleeve, a spring is provided between the piston plate and the bottom inner wall of the sleeve, a pressure plate is provided at the bottom of the sleeve, the pressure plate abuts or separates from the food meat on the conveyor belt as the cylinder moves, and the sleeve then performs a lifting movement on the piston rod, an electromagnetic valve is also provided on the sampling needle, and when the electromagnetic valve is turned on, the interior of the sampling needle is connected with the interior of the sleeve, and a one-way valve is also provided on the side wall of the sleeve.

[0005] Furthermore, a first photoelectric switch is arranged on the top of the sleeve, and a sensing block is arranged on the bottom of the cylinder. The first photoelectric switch contacts or separates from the sensing block as the sleeve moves, and the solenoid valve is opened when the first photoelectric switch contacts the sensing block.

[0006] Furthermore, a plurality of storage disks are arranged on the conveyor belt, a sensing rod is arranged on the outer wall of each storage disk, a second photoelectric switch cooperating with the sensing rod is arranged on the mounting frame, and the conveyor belt is driven to move by a first motor. When the sensing rod moves along with the storage disk on the conveyor belt to the position where the second photoelectric switch on the mounting frame is located, the second photoelectric switch is triggered, the first motor is turned off, and the conveyor belt stops moving.

[0007] Furthermore, a plurality of movable grooves are provided on the conveyor belt, a slider is provided in the movable groove, metal springs are provided on both sides of the slider, a storage disk is provided above each slider, the storage disk moves with the slider, a through hole is provided at the bottom of the storage disk and passes through the slider, and the through hole is used for the sampling needle to pass through.

[0008] Furthermore, an L-shaped plate is provided on the sleeve, and the L-shaped plate abuts against or separates from the side wall of the storage disk as the sleeve moves.

[0009] Furthermore, a limiting rod is also provided on the mounting frame, and the limiting rod passes through the L-shaped plate, and the pressure plate on the sleeve abuts against or separates from the limiting rod as the piston rod of the cylinder moves.

[0010] Furthermore, a collection rack is provided below the conveyor belt, a belt is wound around the side wall of the collection rack, a second motor and a pulley for moving the belt are also provided on the collection rack, a plurality of support racks for placing sampling cups are provided on the belt, and the sampling cups move on the side wall of the collection rack along with the belt.

[0011] Furthermore, the support frame includes a support plate and a fixed ring, the sampling cup is placed on the support plate through the fixed ring, a support rod is provided at the bottom of the support plate, and a wedge plate is provided on the side wall of the collection frame. The support rod abuts against or separates from the wedge plate as the belt moves, and the support plate moves closer to or away from the fixed ring accordingly.

[0012] Furthermore, a base is provided below the conveyor belt, and a collection basket is provided on the top of the base.

[0013] Furthermore, a sewage outlet is provided on the aggregate basket.

[0014] Compared with the prior art, the present invention allows operators to automatically complete sampling without touching the food meat, which not only reduces labor intensity, but also avoids contamination caused by contact with the food meat during manual sampling, thereby improving the hygiene of the sampling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the structure of the mounting frame of the present invention.

[0018] Figure 3 It is a schematic diagram of the cylinder structure of the present invention.

[0019] Figure 4 It is a schematic diagram of the sleeve structure of the present invention.

[0020] Figure 5 This is a schematic diagram of the sampling needle structure of the present invention.

[0021] Figure 6 It is a schematic diagram of the conveyor belt structure of the present invention.

[0022] Figure 7 This is a schematic diagram of the storage disk structure of the present invention.

[0023] Figure 8 It is a schematic diagram of the slider structure of the present invention.

[0024] Fig. 9 It is a schematic diagram of the structure of the collection rack of the present invention.

[0025] Fig.10 It is a schematic diagram of the support frame structure of the present invention.

[0026] Among them, the conveyor belt 1; the storage disk 11; the sensing rod 111; the through hole 112; the first motor 12; the movable groove 12; the slider 121; the metal spring 122; the mounting frame 2; the second photoelectric switch 21; the limit rod 22; the controller 23; the cylinder 3; the piston rod 31; the sampling needle 32; the solenoid valve 321; the sleeve 33; the piston plate 331; the spring 332; the pressure plate 333; the one-way valve 334; the first photoelectric switch 335; the L-shaped plate 336; the sensing block 34; the collection frame 4; the belt 41; the second motor 42; the support frame 43; the support plate 431; the fixing ring 432; the support rod 433; the wedge plate 44; the base 5; the collection basket 51; the sewage outlet 511. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] Thus, a feature indicated in this specification will be used to illustrate one of the features of an embodiment of the present invention, rather than implying that each embodiment of the present invention must have the described feature. In addition, it should be noted that this specification describes many features. Although some features can be combined together to illustrate possible system designs, these features can also be used in other combinations that are not explicitly described. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0029] In the description of the present application, the terms “first” and “second” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0030] In the description of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0032] A sampling device for food meat production, comprising a conveyor belt 1 for placing food meat, a mounting frame 2 is arranged on the conveyor belt 1, a cylinder 3 is arranged on the mounting frame 2, a sampling needle 32 is arranged at one end of a piston rod 31 of the cylinder 3 facing the conveyor belt 1, a sleeve 33 is movably arranged on the piston rod 31, the sampling needle 32 is located in the sleeve 33, a piston plate 331 is arranged at the connection between the piston rod 31 and the sampling needle 32, the piston plate 331 is located in the sleeve 33, and the piston rod 31 is provided with a piston plate 331. A spring 332 is provided between the plate 331 and the bottom inner wall of the sleeve 33. A pressure plate 333 is provided at the bottom of the sleeve 33. The pressure plate 333 contacts or separates from the food meat on the conveyor belt 1 as the cylinder 3 moves. The sleeve 33 then moves up and down on the piston rod 31. A solenoid valve 321 is also provided on the sampling needle 32. When the solenoid valve 321 is opened, the interior of the sampling needle 32 is connected to the interior of the sleeve 33. A one-way valve 334 is also provided on the side wall of the sleeve 33.

[0033] Furthermore, a first photoelectric switch 335 is provided at the top of the sleeve 33, and a sensing block 34 is provided at the bottom of the cylinder 3. The first photoelectric switch 335 contacts or separates from the sensing block 34 as the sleeve 33 moves. When the first photoelectric switch 335 contacts the sensing block 34, the solenoid valve 321 is opened.

[0034] Furthermore, a plurality of storage disks 11 are arranged on the conveyor belt 1, a sensing rod 111 is arranged on the outer wall of each storage disk 11, a second photoelectric switch 21 cooperating with the sensing rod 111 is arranged on the mounting frame 2, and the conveyor belt 1 is driven to move by the first motor 12. When the sensing rod 111 moves along with the storage disk 11 on the conveyor belt 1 to the position where the second photoelectric switch 21 on the mounting frame 2 is located, the second photoelectric switch 21 is triggered, the first motor 12 is turned off, and the conveyor belt 1 stops moving.

[0035] Furthermore, a plurality of movable grooves 12 are provided on the conveyor belt 1, a slider 121 is provided in the movable groove 12, metal springs 122 are provided on both sides of the slider 121, a storage disk 11 is provided above each slider 121, the storage disk 11 moves with the slider 121, a through hole 112 penetrating the slider 121 is provided at the bottom of the storage disk 11, and the through hole 112 is used for the sampling needle 32 to pass through.

[0036] Furthermore, an L-shaped plate 336 is provided on the sleeve 33 , and the L-shaped plate 336 abuts against or separates from the side wall of the storage disk 11 as the sleeve 33 moves.

[0037] Furthermore, a limiting rod 22 is also provided on the mounting frame 2 , and the limiting rod 22 is provided through the L-shaped plate 336 . The pressing plate 333 on the sleeve 33 abuts against or separates from the limiting rod 22 as the piston rod 31 of the cylinder 3 moves.

[0038] Furthermore, a collection frame 4 is arranged below the conveyor belt 1, a belt 41 is wound around the side wall of the collection frame 4, a second motor 42 and a pulley for moving the belt 41 are also arranged on the collection frame 4, a plurality of support frames 43 for placing sampling cups are arranged on the belt 41, and the sampling cups move on the side wall of the collection frame 4 along with the belt 41.

[0039] Furthermore, the support frame 43 includes a support plate 431 and a fixing ring 432. The sampling cup passes through the fixing ring 432 and is placed on the support plate 431. A support rod 433 is provided at the bottom of the support plate 431. A wedge plate 44 is provided on the side wall of the collection frame 4. The support rod 433 abuts against or separates from the wedge plate 44 as the belt 41 moves, and the support plate 431 moves closer to or away from the fixing ring 432 accordingly.

[0040] Furthermore, a base 5 is provided below the conveyor belt 1 , and a material collecting basket 51 is provided on the top of the base 5 .

[0041] Furthermore, a sewage outlet 511 is provided on the aggregate basket 51 .

[0042] In a specific embodiment, Figures 1 to 10 As shown, the main body of the random inspection sampling device for food meat production proposed in the present application is a conveyor belt 1, and a mounting frame 2 is also arranged above the conveyor belt 1. A cylinder 3 is installed on the mounting frame 2 facing the side of the conveyor belt 1, and a sampling needle 32 is arranged at the end of the piston rod 31 of the cylinder 3. The sampling needle 32 contacts the food meat on the conveyor belt 1 as the piston rod 31 of the cylinder 3 moves. And because the sampling needle 32 is hollow in design, when the piston rod 31 drives the sampling needle 32 to penetrate the food meat, the sample of the food meat is contained in the hollow part of the sampling needle 32, thereby realizing the collection of the sample of the food meat.

[0043] A sleeve 33 is also movably arranged on the piston rod 31, and the sampling needle 32 is located inside the sleeve 33. A piston plate 331 is arranged inside the sleeve 33, and the piston plate 331 is located between the piston rod 31 and the sampling needle 32. A spring 332 is also arranged inside the sleeve 33, one end of the spring 332 is fixed on the piston plate 331, and the other end of the spring 332 is fixed on the bottom inner wall of the sleeve 33. In order to enhance the fixing effect on the food meat, a pressing plate 333 is also arranged at the bottom of the sleeve 33, and the pressing plate 333 is fixedly connected to the sleeve 33. When the cylinder 3 drives the piston rod 31 to move toward the food meat on the conveyor belt 1, the pressure plate 333 abuts against the upper surface of the food meat, causing the sleeve 33 to move toward the top of the piston rod 31. At this time, the spring 332 in the sleeve 33 is compressed. Under the action of the rebound force of the spring 332, the pressure plate 333 applies a downward pressure to the food meat, thereby fixing the food meat on the conveyor belt 1, so that the sampling needle 32 can penetrate the food meat for sampling.

[0044] Here, a solenoid valve 321 is also provided at one end of the sampling needle 32 close to the piston plate 331, and a one-way valve 334 is provided at one end of the sleeve 33 close to the pressure plate 333. A first photoelectric switch 335 is provided at one end of the sleeve 33 away from the pressure plate 333, and a sensing block 34 cooperating with the first photoelectric switch 335 is provided at one end of the cylinder 3 close to the piston rod 31. The first photoelectric switch 335 is used to control the opening and closing of the solenoid valve 321. When the solenoid valve 321 is opened, the hollow part of the sampling needle 32 is connected with the internal space of the sleeve 33. A plurality of storage disks 11 are also provided on the conveyor belt 1, and the food meat to be sampled is placed in the storage disks 11. A second photoelectric switch 21 is provided at the bottom of the mounting frame 2 at the same height as the storage disk 11. A sensing rod 111 cooperating with the second photoelectric switch 21 is provided on the outer side of each storage disk 11. The storage disk 11 moves with the movement of the conveyor belt 1. When the sensing rod 111 moves to the position of the second photoelectric switch 21, it means that the food meat in the storage disk 11 is already directly below the cylinder 3. At this time, the second photoelectric switch 21 is triggered, and the first motor 12 driving the conveyor belt 1 is turned off, so that the food meat in the storage disk 11 no longer moves after the storage disk 11 is aligned with the cylinder 3, which facilitates the smooth progress of subsequent sampling work. A controller 23 for receiving signals from the first photoelectric switch 335 and the second photoelectric switch 21 is provided on the mounting frame 2. After receiving the signal, the controller 23 controls the first motor 12 or the second motor 42.

[0045] A plurality of movable grooves 12 are also provided on the conveyor belt 1, and there is a movable groove 12 under each storage disk 11. A slider 121 is provided in the movable groove 12, and metal springs 122 are provided on both sides of the slider 121. The slider 121 is movably installed in the movable groove 12 through the metal springs 122 on both sides thereof, and the storage disk 11 is installed on the slider 121. A through hole 112 is provided at the bottom of the storage disk 11, and the through hole 112 passes through the bottom of the storage disk 11 and the slider 121, and the through hole 112 serves as a passage for the sampling needle 32 to pass through. An L-shaped plate 336 is also provided on the sleeve 33. When the piston rod 31 of the cylinder 3 moves toward the direction of the conveyor belt 1, the L-shaped plate 336 gradually approaches the storage disk 11, and the lower end of the L-shaped plate 336 gradually abuts against the outer wall of the storage disk 11. This is because there is a slight time difference between the triggering of the second photoelectric switch 21 and the shutting down of the first motor 12. During this period, the conveyor belt 1 will continue to move, which will cause the through hole 112 at the bottom of the storage disk 11 under the current cylinder 3 to be not completely aligned with the sampling needle 32. Through the setting of the L-shaped plate 336, when the sampling needle 32 moves toward the food meat on the storage disk 11 with the piston rod 31 of the cylinder 3, the L-shaped plate 336 will contact the outer wall of the storage disk 11 before the pressure plate 333. If the through hole 112 on the storage disk 11 is not aligned with the sampling needle 32 at this time, the storage disk 11 will be pushed by the L-shaped plate 336 and fine-tuned along the movable groove 12 to ensure that the through hole 112 is located directly below the sampling needle 32, thereby ensuring that the sampling operation can proceed smoothly. A limit rod 22 is also provided on the mounting frame 2. The limit rod 22 is of a bent design, one end of which is fixed on the mounting frame 2, and the other end of which passes through the L-shaped plate 336 and extends toward the conveyor belt 1. The limit rod 22 can provide a guide for the L-shaped plate 336 to ensure that the L-shaped plate 336 maintains a stable trajectory during the movement of the sleeve 33. When the piston rod 31 moves, the pressing plate 333 abuts against or separates from the limiting rod 22. When the piston rod 31 moves toward the food meat, the sleeve 33 descends accordingly. When the pressing plate 333 abuts against the surface of the food meat, the sleeve 33 moves upward on the piston rod 31, so that the sampling needle 32 is inserted into the food meat for sampling. When the sampling is completed, the piston rod 31 moves away from the food meat, the sleeve 33 rises accordingly, and the pressing plate 333 separates from the surface of the food meat. Since the pressing plate 333 abuts against the limiting rod 22 during the rising process, the sleeve 33 moves downward on the piston rod 31, so that the sampling needle 32 is blocked by the sleeve 33 again, thereby ensuring that the sleeve 33 can be smoothly reset.

[0046] It should be noted that a collection rack 4 is also provided below the conveyor belt 1, a belt 41 is wound around the side wall of the collection rack 4, a pulley is provided inside the collection rack 4, and a second motor 42 is provided on the collection rack 4 to drive the pulley to rotate. The pulley is driven to rotate by the second motor 42, so that the belt 41 moves around the side wall of the collection rack 4. In addition, a plurality of support racks 43 for placing sampling cups are also provided on the belt 41, and the support racks 43 carry the sampling cups and move on the side wall of the collection rack 4 with the belt 41. Each support rack 43 consists of a support plate 431 and a fixing ring 432. The sampling cup passes through the fixing ring 432 and is placed on the support plate 431, and the support plate 431 and the fixing ring 432 cooperate to support the sampling cup. A support rod 433 is also provided at the bottom of the support plate 431, and a wedge plate 44 is provided on the side wall of one side of the collection frame 4. When the support frame 43 moves to the position of the wedge plate 44 along with the belt 41, the support rod 433 abuts against the wedge plate 44, and the support rod 433 moves along the wedge plate 44 to push the support plate 431 upward, and the collection cup is also pushed up, so that the operator can take the collection cup from the collection frame 4 conveniently.

[0047] In actual use, the food meat to be sampled is placed in the storage disk 11 and moves with the conveyor belt 1. When the sensing rod 111 on the side wall of the storage disk 11 reaches the position of the second photoelectric switch 21, it means that the storage disk 11 is already located below the cylinder 3. At this time, the first motor 12 stops to stop the conveyor belt 1 from moving, and then the cylinder 3 is started to move the telescopic rod toward the conveyor platform. The L-shaped plate 336 contacts the side wall of the storage disk 11, so that the through hole 112 at the bottom of the storage disk 11 is located directly below the sampling needle 32. As the telescopic rod continues to move toward the conveyor belt 1, the sampling needle 32 is inserted into the food meat, and the pressing plate 333 contacts the surface of the food meat, exerting pressure on the food meat while causing the sleeve 33 to move in the activity. The surface of the plug rod 31 rises, and due to the upward rise of the sleeve 33, the position of the piston plate 331 between the sampling needle 32 and the piston rod 31 in the sleeve 33 changes, and the piston plate 331 compresses the air in the area between the piston plate 331 inside the sleeve 33 and the surface of the food meat. When the first photoelectric switch 335 moves upward with the sleeve 33 to the position of the sensing block 34, it means that the sleeve 33 has risen to the uppermost end of the piston rod 31, and the sampling needle 32 in the sleeve 33 has completely penetrated the food meat to complete the sampling, and has passed through the through hole 112 at the bottom of the storage disk 11 to reach the collection rack 4 under the conveyor belt 1, and the sampling needle 32 is located in one of the sampling cups. At this time, the first photoelectric switch 335 is triggered, so that the electromagnetic valve 321 on the sampling needle 32 is opened. Since the air in the area between the piston plate 331 inside the sleeve 33 and the surface of the food meat is compressed, when the inside of the sampling needle 32 is connected with the inside of the sleeve 33, the compressed air will spray the food meat sample inside the sampling needle 32 into the sampling cup. The wedge plate 44 is located at the end of the collection frame 4 away from the conveyor belt 1. When the sampling cup collects the food meat sample, it moves to the wedge plate 44 with the belt 41 and is lifted up, which is convenient for the operator to take away the sampling cup. After sampling is completed, the piston rod 31 is reset, the induction block 34 is separated from the first photoelectric switch 335, the electromagnetic valve 321 is closed again, and the one-way valve 334 on the sleeve allows the outside air to enter the sleeve, but the air in the sleeve cannot reach the outside through the one-way valve 334. When the sleeve 33 is reset, the outside air enters the sleeve 33 through the one-way valve 334, so that the area between the piston plate 331 in the sleeve 33 and the surface of the food meat is balanced with the air pressure of the outside, ensuring that the sleeve 33 is smoothly separated from the surface of the food meat. When the sampling needle 32 returns to the sleeve 33, it is reset. At this time, the first motor 12 is started again to start the conveyor belt 1 to start moving. The second motor 42 is also started to move the sampling cup on the next support frame 43 to the right below the sampling needle 32. This cycle is repeated to quickly and continuously sample all the food meat on the conveyor belt 1. This design allows operators to complete sampling without having to touch the food meat, which not only reduces labor intensity, but also avoids contamination caused by contact with the food meat during manual sampling, thereby improving the hygiene of the sampling operation.

[0048] It should be noted that a base 5 for support is provided below the conveyor belt 1, a collection basket 51 is fixedly mounted on the top of the base 5, and a sewage outlet 511 is provided on the side wall of the collection basket 51. The collection basket 51 is used to collect blood and other impurities that may drip from the food meat, and these impurities will fall from the conveyor belt 1 into the collection basket 51 under the action of gravity. When the collection basket 51 needs to be cleaned, the operator rinses the inside of the collection basket 51 with water, and then the accumulated dirt can be effectively discharged by connecting the drain pipe to the sewage outlet 511 of the collection basket 51. This design makes the working environment of the present application more tidy and sanitary.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sampling device for food meat production, comprising a conveyor belt (1) for placing food meat, characterized in that: The conveyor belt (1) is provided with a mounting frame (2), the mounting frame (2) is provided with a cylinder (3), a sampling needle (32) is provided at one end of a piston rod (31) of the cylinder (3) facing the conveyor belt (1), a sleeve (33) is movably provided on the piston rod (31), the sampling needle (32) is located in the sleeve (33), a piston plate (331) is provided at the connection between the piston rod (31) and the sampling needle (32), the piston plate (331) is located in the sleeve (33), and the piston plate (331) and the sleeve (33) are connected. A spring (332) is arranged between the bottom inner wall of the sleeve (33), a pressure plate (333) is arranged at the bottom of the sleeve (33), the pressure plate (333) contacts or separates from the food meat on the conveyor belt (1) as the cylinder (3) moves, and the sleeve (33) accordingly moves up and down on the piston rod (31), the sampling needle (32) is also provided with a solenoid valve (321), when the solenoid valve (321) is opened, the interior of the sampling needle (32) is connected to the interior of the sleeve (33), and a one-way valve (334) is also arranged on the side wall of the sleeve (33).

2. A random sampling device for food meat production according to claim 1, characterized in that: A first photoelectric switch (335) is arranged at the top of the sleeve (33), and a sensing block (34) is arranged at the bottom of the cylinder (3); the first photoelectric switch (335) contacts or separates from the sensing block (34) as the sleeve (33) moves; and the solenoid valve (321) is opened when the first photoelectric switch (335) contacts the sensing block (34).

3. A random sampling device for food meat production according to claim 2, characterized in that: A plurality of storage disks (11) are arranged on the conveyor belt (1), and a sensing rod (111) is arranged on the outer wall of each storage disk (11). A second photoelectric switch (21) cooperating with the sensing rod (111) is arranged on the mounting frame (2). The conveyor belt (1) is driven to move by a first motor (12). When the sensing rod (111) moves on the conveyor belt (1) along with the storage disk (11) to the position where the second photoelectric switch (21) on the mounting frame (2) is located, the second photoelectric switch (21) is triggered, the first motor (12) is turned off, and the conveyor belt (1) stops moving.

4. A random sampling device for food meat production according to claim 3, characterized in that: The conveyor belt (1) is provided with a plurality of movable grooves (12), wherein a slider (121) is provided in the movable groove (12), and metal springs (122) are provided on both sides of the slider (121). A storage disk (11) is provided above each slider (121), and the storage disk (11) moves with the slider (121). A through hole (112) penetrating the slider (121) is provided at the bottom of the storage disk (11), and the through hole (112) is used for the sampling needle (32) to pass through.

5. A random sampling device for food meat production according to claim 4, characterized in that: An L-shaped plate (336) is also provided on the sleeve (33), and the L-shaped plate (336) abuts against or separates from the side wall of the storage disk (11) as the sleeve (33) moves.

6. A random sampling device for food meat production according to claim 5, characterized in that: A limiting rod (22) is also provided on the mounting frame (2), and the limiting rod (22) is provided through the L-shaped plate (336). The pressure plate (333) on the sleeve (33) abuts against or separates from the limiting rod (22) as the piston rod (31) of the cylinder (3) moves.

7. A random sampling device for food meat production according to claim 3, characterized in that: A collection frame (4) is arranged below the conveyor belt (1), a belt (41) is wound around the side wall of the collection frame (4), a second motor (42) and a pulley for moving the belt (41) are also arranged on the collection frame (4), a plurality of support frames (43) for placing sampling cups are arranged on the belt (41), and the sampling cups move on the side wall of the collection frame (4) along with the belt (41).

8. The random inspection sampling device for food meat production according to claim 6, characterized in that: The support frame (43) comprises a support plate (431) and a fixing ring (432); the sampling cup passes through the fixing ring (432) and is placed on the support plate (431); a support rod (433) is provided at the bottom of the support plate (431); a wedge plate (44) is provided on the side wall of the collection frame (4); the support rod (433) abuts against or separates from the wedge plate (44) as the belt (41) moves, and the support plate (431) moves closer to or farther away from the fixing ring (432) accordingly.

9. A random sampling device for food meat production according to claim 1, characterized in that: A base (5) is provided below the conveyor belt (1), and a material collection basket (51) is provided on the top of the base (5).

10. A random sampling device for food meat production according to claim 9, characterized in that: The aggregate basket (51) is provided with a sewage outlet (511).

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