CN220751783U - Food detection sample preprocessing device - Google Patents

Abstract

The utility model relates to the technical field of food safety detection, in particular to a food detection sample pretreatment device, which comprises a base, wherein a mixing box is arranged on the base, a mixing motor is fixedly arranged on the outer wall of one end of the mixing box, a stirring shaft is arranged in the mixing box, a plurality of stirring blades are arranged on the stirring shaft, and a discharge hole is formed in the bottom end of the mixing box; the top of the mixing box is fixedly provided with a crushing box, the bottom end of the crushing box is communicated with the top end of the mixing box, the bottom end of the crushing box is provided with a valve assembly, the top of the crushing box is provided with a crushing motor, and a crushing shaft is arranged in the crushing box; the base is fixedly provided with a liquid adding box through a first supporting frame, the liquid adding box is communicated with the upper part of the mixing box through a liquid adding pipeline, and the liquid adding pipeline is provided with a flow valve; the crushing box is internally provided with a scraping wall component for scraping food on the inner wall of the crushing box. The beneficial effects of the utility model are as follows: the quantitative food adding and liquid adding are realized, the labor intensity of detection personnel is greatly reduced, and the detection precision is improved.

Description

Food detection sample preprocessing device

Technical Field

The utility model relates to the technical field of food safety detection, in particular to a food detection sample pretreatment device.

Background

Food safety detection refers to detection of harmful substances in food according to national indexes, mainly including detection of some indexes of harmful and toxic substances, such as heavy metals, aflatoxins and the like. Before detecting the safety of food, food needs to be pretreated, and a common pretreatment method comprises the steps of crushing and adding liquid to mix the food to be detected, so as to prepare a solution type sample to be detected. The existing pretreatment method generally adopts a pulverizer to pulverize food to be detected, then the pulverized food is introduced into a beaker, and a proper amount of liquid is added and stirred uniformly. The above prior art has the following drawbacks: in order to ensure the matching of the crushed food and the added liquid, the food is required to be weighed before crushing, and part of the food possibly adheres to the inner wall of the crusher in the crushing process of the crusher, so that the food sample is reduced, and the detection structure is possibly inaccurate; on the other hand, the crushed food needs to be manually poured out and the mixture after liquid addition is stirred, so that the labor intensity of detection personnel is certainly increased.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a food detection sample pretreatment device so as to solve the problems in the prior art.

The technical scheme for solving the technical problems is as follows: the food detection sample pretreatment device comprises a base, wherein a mixing box is arranged on the base, a mixing motor is fixedly arranged on the outer wall of one end of the mixing box, a stirring shaft which is horizontally arranged and used for being in transmission connection with the mixing motor is arranged in the mixing box, a plurality of stirring blades are arranged on the stirring shaft, a discharge hole is formed in the bottom end of the mixing box, and a discharge valve is arranged at the discharge hole; the top of the mixing box is fixedly provided with a crushing box, the bottom end of the crushing box is open, the bottom end of the crushing box is communicated with the top end of the mixing box, the bottom end of the crushing box is provided with a valve assembly for opening or closing the bottom end of the crushing box, the top of the crushing box is provided with a crushing motor, a crushing shaft which is vertically arranged and is in transmission connection with the crushing motor is arranged in the crushing box, a plurality of crushing blades are arranged on the crushing shaft, and the top end of the crushing box is provided with a feed inlet; the base is fixedly provided with a liquid adding box through a first supporting frame, the liquid adding box is communicated with the upper part of the mixing box through a liquid adding pipeline, and the liquid adding pipeline is provided with a flow valve; the crushing box is internally provided with a scraping wall component for scraping food on the inner wall of the crushing box.

The beneficial effects of the utility model are as follows: after the food is crushed by the crushing box, the food scraps adhered to the inner wall of the crushing box can be scraped off by the scraping wall assembly, so that the influence on a monitoring result caused by the reduction of food samples is reduced; the food after smashing enters into the mixing box through the valve assembly to the flow valve is opened, to the quantitative liquid medicine in the mixing box, through stirring vane's stirring mix, realizes the accurate ration of food sample and liquid medicine and mixes, and the mixture after mixing is discharged from the discharge gate, greatly reduced inspector's intensity of labour, and the precision of the detection of improvement.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, the valve assembly comprises a sealing plate horizontally arranged at the bottom end of the crushing box and a linear driving motor fixed on the base through a second supporting frame, wherein the linear driving motor is horizontally arranged, and an output shaft of the linear driving motor is in transmission connection with one end of the sealing plate and is used for driving the sealing plate to open or close the bottom of the crushing box.

The beneficial effects of adopting the further scheme are as follows: the sealing plate is driven to move in the horizontal direction by the linear driving motor, so that the bottom edge of the crushing box is opened or closed by the sealing plate, and the operation is simple.

Further, the bottom of smashing the case is equipped with the direction passageway that the level set up, the direction passageway with smash the inner chamber intercommunication of case, the one end of shrouding passes the direction passageway is connected with linear drive motor's output shaft transmission.

The beneficial effects of adopting the further scheme are as follows: the arrangement of the guide channel can improve the stability of the movement of the sealing plate and avoid the unstable sealing condition caused by the lateral movement of the sealing plate in the movement process.

Further, scrape the wall subassembly including setting up the annular of smashing the incasement and scrape the piece, the outer wall of annular scrape the piece with smash the inner wall slip butt of incasement, the top of annular scrape the piece and the push-and-pull rod fixed connection of vertical setting, the top of push-and-pull rod upwards stretches out smash the top of top back through connecting rod and the top fixed connection of the rack of vertical setting of case, be equipped with the guide rail of vertical setting on smashing the outer wall of case, the rack slides and establishes on the guide rail, the rack is with the gear engagement on elevator motor's the output shaft, elevator motor passes through the third support frame and fixes on the base.

The beneficial effects of adopting the further scheme are as follows: the lifting motor drives the rack to move up and down along the length direction of the guide rail in the vertical direction, so that the push-pull rod is driven to drive the annular scraping block to move along the inner wall of the crushing box in the vertical direction, and food residues on the inner wall of the crushing box can be scraped off, and the operation is simple.

Further, be equipped with on the base and be used for right the clearance subassembly that the inner wall of mixing box cleared up.

The beneficial effects of adopting the further scheme are as follows: the setting of clearance subassembly can conveniently clear up the mixing box inner wall.

Further, the cleaning assembly comprises a cleaning pipe fixedly arranged in the mixing box, a plurality of cleaning nozzles are arranged on the cleaning pipe, a cleaning water tank is fixedly arranged on the base, the cleaning water tank is communicated with the input end of the water pump through a pipeline, and the output end of the water pump is communicated with the cleaning pipe through a pipeline.

The beneficial effects of adopting the further scheme are as follows: the water in the cleaning water tank is led into the cleaning pipe through the water pump and then sprayed out through the cleaning nozzle, so that the mixing tank is cleaned.

Further, the inner bottom wall of the mixing box is of an inclined structure with a high middle low periphery, and the discharge hole is communicated with the middle of the bottom of the mixing box.

The beneficial effects of adopting the further scheme are as follows: the arrangement of the inclined structure can facilitate the mixture in the mixing box to flow into the discharge hole.

Further, the stirring shaft is uniformly provided with a plurality of rows of stirring blades along the length direction of the stirring shaft, and the lengths of the stirring blades are gradually shortened from the middle part of the stirring shaft to the directions of the two ends of the stirring shaft.

The beneficial effects of adopting the further scheme are as follows: ensure that the distance between the stirring blade and the inner bottom wall of the mixing box is not too large, and improve the mixing effect.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

in the drawings, the list of components represented by the various numbers is as follows:

1. a base; 2. a mixing box; 3. a hybrid motor; 4. a stirring shaft; 5. stirring blades; 6. a discharge port; 7. a discharge valve; 8. a crushing box; 9. a crushing motor; 10. a crushing shaft; 11. crushing the blades; 12. a feed inlet; 13. a first support frame; 14. a liquid adding box; 15. a liquid adding pipeline; 16. a flow valve; 17. a sealing plate; 18. a second support frame; 19. a linear driving motor; 20. a guide channel; 21. an annular scraping block; 22. a push-pull rod; 23. a connecting rod; 24. a rack; 25. a guide rail; 26. a lifting motor; 27. a gear; 28. a third support frame; 29. cleaning the tube; 30. cleaning the nozzle; 31. cleaning the water tank; 32. and (3) a water pump.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

As shown in fig. 1, the embodiment of the utility model includes a base 1, a mixing box 2 is disposed on the base 1, an inner cavity of the mixing box 2 is a cylindrical cavity or an ellipsoidal cavity, a mixing motor 3 is fixedly disposed on an outer wall of one end of the mixing box 2, a stirring shaft 4 is disposed in the mixing box 2 and is in driving connection with the mixing motor 3, a plurality of stirring blades 5 are disposed on the stirring shaft 4, a plurality of rows of stirring blades 5 are uniformly disposed on the stirring shaft 4 along a length direction thereof, the lengths of the stirring blades 5 are gradually shortened from the middle of the stirring shaft 4 to two ends of the stirring shaft 4, that is, the stirring blades 5 disposed in the middle of the stirring shaft 4 are longest, the shorter the lengths of the stirring blades 5 are near two ends of the stirring shaft 4, the shorter the lengths of the stirring blades 5 are, the inner bottom wall of the mixing box 2 is in a middle low peripheral high inclined structure, the longer the middle of the stirring shaft 4 is in a middle of the stirring shaft 4, the middle of the mixing shaft 4 is in a large distance from the bottom of the mixing box 2, the middle of the mixing box 6 is in a high peripheral inclined structure, the middle of the mixing box 6 is provided with a high peripheral of the mixing box 6, and the bottom of the mixing box 6 is in the middle of the mixing box 6, and the middle of the mixing box is provided with a high peripheral structure, and the discharge outlet 6 is in the middle of the mixing box 6. In order to collect the mixed sample after mixing from the discharge hole 6, a sampling table is arranged on the base 1 vertically below the discharge hole 6 and used for placing a sampling container.

The top of the mixing box 2 is fixedly provided with a crushing box 8, the inner cavity of the crushing box 8 is a cylindrical cavity which is vertically arranged, the bottom end of the crushing box 8 is open, the bottom end of the crushing box 8 is communicated with the top end of the mixing box 2, the bottom end of the crushing box 8 is provided with a valve component for opening or closing the bottom end of the crushing box 8, the top of the crushing box 8 is provided with a crushing motor 9, a crushing shaft 10 which is vertically arranged in the crushing box 8 and is in transmission connection with the crushing motor 9 is arranged in the crushing box 8, a plurality of crushing blades 11 are arranged on the crushing shaft 10, and the top end of the crushing box 8 is provided with a feed inlet 12; the base 1 is fixedly provided with a liquid adding box 14 through a first supporting frame 13, the horizontal height of the liquid adding box 14 is higher than that of the top of the mixing box 2, so that liquid in the liquid adding box 14 can flow into the mixing box 2 under the action of gravity, an additional power piece is avoided, the liquid adding box 14 is communicated with the upper part of the mixing box 2 through a liquid adding pipeline 15, and a flow valve 16 is arranged on the liquid adding pipeline 15; the crushing box 8 is internally provided with a scraping wall assembly used for scraping food on the inner wall of the crushing box 8, and in order to facilitate the four fragments scraped by the scraping wall assembly to be fully fed into the mixing box 2, the top opening of the mixing box 2 is identical to the bottom opening of the crushing box 8 in size and is correspondingly conducted.

The valve assembly comprises a sealing plate 17 horizontally arranged at the bottom end of the crushing box 8 and a linear driving motor 19 fixed on the base 1 through a second supporting frame 18, wherein the linear driving motor 19 is horizontally arranged, an output shaft of the linear driving motor 19 is in transmission connection with one end of the sealing plate 17 to drive the sealing plate 17 to open or close the bottom of the crushing box 8, and the sealing plate 17 is driven to move in the horizontal direction through the linear driving motor 19, so that the bottom edge of the crushing box 8 is opened or closed by the sealing plate 17, and the operation is simple. In order to improve the stability of shrouding 17 removal, avoid because shrouding 17 appears moving the situation such as side and the unstable situation of closure that leads to in the removal in-process, the bottom of smashing case 8 is equipped with the guide way 20 of level setting, specifically, be equipped with rectangular lug on the bottom outer wall of smashing case 8, guide way 20 establishes in the lug, guide way 20 with smash the inner chamber intercommunication of case 8, the one end of shrouding 17 passes guide way 20 is connected with the output shaft transmission of linear drive motor 19.

In the embodiment of the utility model, the wall scraping assembly comprises an annular scraping block 21 arranged in the crushing box 8, the outer wall of the annular scraping block 21 is in sliding abutting connection with the inner wall of the crushing box 8, the top end of the annular scraping block 21 is fixedly connected with a vertically arranged push-pull rod 22, the top end of the push-pull rod 22 extends upwards out of the top of the crushing box 8 and then is fixedly connected with the top end of a vertically arranged rack 24 through a connecting rod 23, a vertically arranged guide rail 25 is arranged on the outer wall of the crushing box 8, the rack 24 is slidably arranged on the guide rail 25, the rack 24 is meshed with a gear 27 on an output shaft of a lifting motor 26, the lifting motor 26 is fixed on the base 1 through a third support frame 28, and the lifting motor 26 drives the rack 24 to move up and down in the vertical direction along the length direction of the guide rail 25, so that the push-pull rod 22 is driven to drive the annular scraping block 21 to move in the vertical direction along the inner wall of the crushing box 8, and food residues on the inner wall of the crushing box 8 can be scraped.

In the embodiment of the present utility model, a cleaning assembly for cleaning the inner wall of the mixing tank 2 is disposed on the base 1, specifically, the cleaning assembly includes a cleaning pipe 29 fixedly disposed in the mixing tank 2, a plurality of cleaning nozzles 30 are disposed on the cleaning pipe 29, a cleaning water tank 31 is fixedly disposed on the base 1, the cleaning water tank 31 is communicated with an input end of a water pump 32 through a pipeline, an output end of the water pump 32 is communicated with the cleaning pipe 29 through a pipeline, water in the cleaning water tank is introduced into the cleaning pipe 29 through the water pump 32, and then is sprayed out through the cleaning nozzles 30, so as to clean the mixing tank 2.

After the food is crushed by the crushing box 8, the food scraps adhered to the inner wall of the crushing box 8 can be scraped off by the scraping wall assembly, so that the influence on a monitoring result caused by the reduction of food samples is reduced; the crushed food enters the mixing box 2 through the valve assembly, the flow valve 16 is opened, quantitative liquid medicine in the mixing box 2 is mixed through stirring of the stirring blade 5, accurate quantitative mixing of the food sample and the liquid medicine is achieved, the mixed mixture is discharged from the discharge port 6, labor intensity of detection personnel is greatly reduced, and detection accuracy is improved. When the used mixing box 2 needs to be cleaned, the sealing plate 17 is closed, so that the influence of the cleaning liquid entering the crushing box 8 on the crushing of dry food needing to be crushed subsequently is avoided. Then the water pump 32 is started, the water pump 32 drives the cleaning liquid to enter the cleaning pipe 29, then the cleaning liquid is sprayed out through the cleaning nozzle 30 to clean the inner wall of the mixing box 2, and the cleaned sewage is discharged from the discharge hole 6.

In the description of the present utility model, it should be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the system or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (8)

1. The food detection sample pretreatment device is characterized by comprising a base (1), wherein a mixing box (2) is arranged on the base (1), a mixing motor (3) is fixedly arranged on the outer wall of one end of the mixing box (2), a stirring shaft (4) which is horizontally arranged and used for being in transmission connection with the mixing motor (3) is arranged in the mixing box (2), a plurality of stirring blades (5) are arranged on the stirring shaft (4), a discharge hole (6) is formed in the bottom end of the mixing box (2), and a discharge valve (7) is arranged at the discharge hole (6); the top of the mixing box (2) is fixedly provided with a crushing box (8), the bottom end of the crushing box (8) is opened, the bottom end of the crushing box (8) is communicated with the top end of the mixing box (2), the bottom end of the crushing box (8) is provided with a valve component for opening or closing the bottom end of the crushing box (8), the top of the crushing box (8) is provided with a crushing motor (9), a crushing shaft (10) which is vertically arranged in the crushing box (8) and is used for being in transmission connection with the crushing motor (9) is arranged in the crushing box (8), a plurality of crushing blades (11) are arranged on the crushing shaft (10), and the top end of the crushing box (8) is provided with a feed inlet (12); the base (1) is fixedly provided with a liquid adding box (14) through a first supporting frame (13), the liquid adding box (14) is communicated with the upper part of the mixing box (2) through a liquid adding pipeline (15), and the liquid adding pipeline (15) is provided with a flow valve (16); the crushing box (8) is internally provided with a scraping wall component for scraping food on the inner wall of the crushing box (8).

2. A food detection sample pretreatment apparatus according to claim 1, wherein the valve assembly comprises a sealing plate (17) horizontally arranged at the bottom end of the crushing box (8) and a linear driving motor (19) fixed on the base (1) through a second supporting frame (18), the linear driving motor (19) is horizontally arranged, and an output shaft of the linear driving motor (19) is in transmission connection with one end of the sealing plate (17) to drive the sealing plate (17) to open or close the bottom of the crushing box (8).

3. Food detection sample pretreatment apparatus according to claim 2, characterized in that the bottom of the crushing box (8) is provided with a horizontally arranged guide channel (20), the guide channel (20) is communicated with the inner cavity of the crushing box (8), and one end of the sealing plate (17) penetrates through the guide channel (20) and is in transmission connection with the output shaft of the linear driving motor (19).

4. The food detection sample pretreatment device according to claim 1, characterized in that the wall scraping assembly comprises an annular scraping block (21) arranged in the crushing box (8), the outer wall of the annular scraping block (21) is in sliding butt with the inner wall of the crushing box (8), the top end of the annular scraping block (21) is fixedly connected with a vertically arranged push-pull rod (22), the top end of the push-pull rod (22) extends upwards out of the top of the crushing box (8) and then is fixedly connected with the top end of a vertically arranged rack (24) through a connecting rod (23), a vertically arranged guide rail (25) is arranged on the outer wall of the crushing box (8), the rack (24) is slidably arranged on the guide rail (25), the rack (24) is meshed with a gear (27) on an output shaft of a lifting motor (26), and the lifting motor (26) is fixed on the base (1) through a third supporting frame (28).

5. A food detection sample pre-treatment apparatus according to any one of claims 1 to 4, wherein the base (1) is provided with a cleaning assembly for cleaning the inner wall of the mixing tank (2).

6. The food detection sample pretreatment apparatus according to claim 5, wherein the cleaning assembly comprises a cleaning pipe (29) fixedly arranged in the mixing box (2), a plurality of cleaning nozzles (30) are arranged on the cleaning pipe (29), a cleaning water tank (31) is fixedly arranged on the base (1), the cleaning water tank (31) is communicated with an input end of a water pump (32) through a pipeline, and an output end of the water pump (32) is communicated with the cleaning pipe (29) through a pipeline.

7. A food detection sample pretreatment apparatus according to any one of claims 1 to 4, characterized in that the inner bottom wall of the mixing box (2) is of a slant structure with a high middle low periphery, and the discharge port (6) is communicated with the middle of the bottom of the mixing box (2).

8. The food detection sample pretreatment apparatus according to claim 7, wherein a plurality of rows of stirring blades (5) are uniformly provided on the stirring shaft (4) along a length direction thereof, and the lengths of the plurality of rows of stirring blades (5) are gradually shortened from a middle portion of the stirring shaft (4) to both ends of the stirring shaft (4).