Sample pretreatment device for detection

Abstract

The utility model discloses a sample pretreatment device for detection, which relates to the field of sample pretreatment devices and comprises a support base, a heater arranged in the middle of the top surface of the support base, a drying and picking component arranged on the top surface of the heater, a support platen sleeved on the outer side of the upper part of the heater, and the bottom of the support platen fixed on the top surface of the support base; the drying and picking assembly comprises a heat conduction screen box, the heat conduction screen box is rotationally installed on the top face of the heater through a bearing, and the outer side of the heat conduction screen box is sleeved with an impurity collecting box used for collecting impurities. During pretreatment, the heater at the bottom is used for heating the heat conduction sieve box so as to dry an internal soil sample, after primary drying, the heat conduction sieve box rotates, impurities and soil are layered through density, heavy impurities such as stone grains and light impurities such as plant residues are discharged from the upper filter tank and the lower filter tank respectively, and sorting can be completed while drying is performed; and the convenience of sample pretreatment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sample pretreatment device, concretely relates to a sample pretreatment device for detection. BACKGROUND

[0002] Soil environment monitoring is an important measure to understand the quality of soil environment, and is a dynamic analysis and determination of soil pollution degree and development trend for the purpose of preventing and treating soil pollution hazards. Soil environment monitoring generally includes the steps of preparation, point distribution, sampling, sample preparation, analysis and testing, and evaluation. The original soil sample collected back to the laboratory needs to be dried as soon as possible, the impurities in the soil are picked out after drying, and then the grinding and screening are performed to extract and prepare the sample.

[0003] In the prior art, the sampled soil is first dried. After drying, the soil contains a certain amount of plant roots, stones, leaf residues and other impurities, which need to be manually picked out or filtered through multiple layers, and then ground in another process. The operation process is complicated, and the impurity picking is very laborious. Therefore, we propose a sample pretreatment device for detection. UTILITY MODEL CONTENT

[0004] In order to solve the technical problems existing in the prior art, the utility model provides a sample pretreatment device for detection.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a sample pretreatment device for detection, comprising a supporting base, a heater is arranged in the middle of the top surface of the supporting base, a drying and picking assembly is arranged on the top surface of the heater, a supporting table plate is sleeved on the outer side of the upper part of the heater, and the bottom of the supporting table plate is fixed on the top surface of the supporting base;

[0006] The drying and picking assembly comprises a heat-conducting sieve box, the heat-conducting sieve box is rotatably installed on the top surface of the heater through bearings, a foreign matter collecting box for collecting foreign matters is sleeved on the outer side of the heat-conducting sieve box, the bottom surface of the foreign matter collecting box is fixedly installed on the top surface of the supporting table plate, filter grooves are symmetrically arranged in the bottom surface and the middle part of the heat-conducting sieve box, a driven gear is fixed on the outer surface of one end of the bottom of the heat-conducting sieve box penetrating through the bottom of the supporting table plate, a driving gear is meshingly connected to the side surface of the driven gear, the bottom of the driving gear is rotatably connected to the inside of the supporting table plate through bearings, one end of the driving gear penetrating through the bottom surface of the supporting table plate is fixed on the output shaft of a motor, the motor is installed between the top surface of the supporting base and the top surface of the supporting table plate, a cover plate assembly is arranged on the top surface of the heat-conducting sieve box for internal heat preservation and leakage prevention, and a grinding assembly is arranged on the top surface of the supporting base away from the driving gear.

[0007] Preferably, an anti-skid rubber pad is glued and fixed on the bottom surface of the supporting base, the bottom surface of the foreign matter collecting box is flush with the bottom surface of the heat-conducting sieve box, the wall thickness of the foreign matter collecting box is smaller than the wall thickness of the heat-conducting sieve box, and the internal height of the foreign matter collecting box is greater than the height of the heat-conducting sieve box.

[0008] Preferably, the cover plate assembly further comprises a heat-insulating cover plate, the top surface of the heat-conducting sieve box and the litter collecting box is covered by the heat-insulating cover plate, the side edge of the heat-insulating cover plate is fixed with a connecting plate which is sleeved on the T-shaped fixing rod, and the bottom surface of the fixing rod is fixed on the top surface of the supporting base.

[0009] Preferably, the outer surface of the fixing rod below the heat-conducting sieve box is fixed with a limiting batten plate for limiting the connecting plate, and the top of the fixing rod is located above the top of the litter collecting box.

[0010] Preferably, the bottom surface of the edge of the heat-insulating cover plate is abutted on the top surface of the litter collecting box, and the bottom surface of the middle part of the heat-insulating cover plate is slidably attached to the top surface of the heat-conducting sieve box.

[0011] Preferably, the grinding assembly further comprises a servo air cylinder, the side edge of the supporting platform is symmetrically provided with the servo air cylinder, the output end of the servo air cylinder is fixed with a supporting plate, both the supporting plates are fixed on the side surface of the sealing cover, the sealing cover is covered on the top surface of the heat-conducting sieve box and the litter collecting box, the bottom surface of the sealing cover is fixed with a fixed plate, and the side edge of the fixed plate is rotatably sleeved with a grinding roller for grinding soil.

[0012] Preferably, the side surface of the sealing cover between the two supporting plates is fixed with another supporting plate, the other supporting plate is slidably sleeved on a limiting rod, and the bottom surface of the limiting rod is fixed on the top surface of the supporting base.

[0013] Preferably, the bottom surface of the sealing cover is fixed with a sealing sleeve which is sleeved on the outer surface of the heat-conducting sieve box, the outer diameter of the sealing sleeve is smaller than the inner diameter of the litter collecting box, the height of the sealing sleeve is equal to the height of the heat-conducting sieve box, and the bottom surface of the grinding roller is flush with the bottom surface of the sealing sleeve.

[0014] Preferably, the top surface of the grinding roller is slidably attached with a scraper, the side edge of the scraper is fixed on the side surface of the fixed plate, the length of the scraper is equal to the height of the grinding roller, and the width of the scraper is smaller than the width of the fixed plate.

[0015] Compared with the prior art, the sample pretreatment device for detection has the following beneficial effects:

[0016] 1. In the utility model, during the pretreatment, the heater at the bottom heats the heat-conducting sieve box to dry the soil sample in the heat-conducting sieve box, after the preliminary drying, the heat-conducting sieve box rotates, and the density makes the heavy impurities such as stones and the light impurities such as plant residues be filtered out from the upper and lower layer filter grooves, so that the dry soil sample can be sorted at the same time, and the convenience during the sample pretreatment is improved.

[0017] 2. The cover plate assembly can better protect the inside of the heat-conducting sieve box during the drying, so as to ensure the drying effect and avoid the soil in the heat-conducting sieve box from being thrown out during the rotation, and the upper layer filter groove facilitates the moisture to be discharged.

[0018] 3. After the dry picking is completed, the grinding roller is arranged in the heat conduction sieve box, so that the dry soil in the heat conduction sieve box is ground when the heat conduction sieve box is driven to rotate by the gear, and the subsequent sample preparation is facilitated, and the sealing sleeve can prevent the soil in the heat conduction sieve box from being thrown out during rotation. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation on the present application, and in the drawings:

[0020] Fig. 1 It is a structure front view schematic diagram of the sample pretreatment device for the whole detection in the embodiment;

[0021] Fig. 2 It is a structure front view schematic diagram of the dry picking assembly in the embodiment;

[0022] Fig. 3 It is a structure bottom view schematic diagram of the dry picking assembly in the embodiment;

[0023] Fig. 4 It is a structure bottom view schematic diagram of the grinding assembly in the embodiment.

[0024] In the drawings: 1, support base; 2, support table plate; 3, heater; 4, dry picking assembly; 41, heat conduction sieve box; 42, sundry collection box; 43, filter groove; 44, driven gear; 45, driving gear; 46, motor; 5, cover plate assembly; 51, heat preservation cover plate; 52, connecting plate; 53, fixed rod; 54, limiting pad plate; 6, grinding assembly; 61, servo air cylinder; 62, support plate; 63, limiting rod; 64, sealing cover; 65, fixed plate; 66, grinding roller; 67, scraper; 68, sealing sleeve; 7, anti-skid rubber pad. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0026] This embodiment proposes a sample preprocessing device for detection, such as... Figs. 1 to 4 As shown, it includes a support base 1, a heater 3 is provided in the middle of the top surface of the support base 1, a drying and sorting component 4 is provided on the top surface of the heater 3, a support plate 2 is sleeved on the upper outer side of the heater 3, and the bottom of the support plate 2 is fixed to the top surface of the support base 1.

[0027] The drying and sorting assembly 4 includes a heat-conducting sieve box 41. The heat-conducting sieve box 41 is rotatably mounted on the top surface of the heater 3 via a bearing. A debris collection box 42 for collecting debris is fitted on the outside of the heat-conducting sieve box 41. The bottom surface of the debris collection box 42 is fixedly mounted on the top surface of the support plate 2. Filter grooves 43 are symmetrically opened on the bottom and middle of the heat-conducting sieve box 41. A driven gear 44 is fixed on the outer surface of the bottom of the heat-conducting sieve box 41, extending to one end of the bottom of the support plate 2. A driving gear 45 is meshed with the side of the driven gear 44. The bottom of the driving gear 45 is rotatably connected to the inside of the support plate 2 via a bearing. One end of the driving gear 45, extending to the bottom surface of the support plate 2, is fixed on the output shaft of a motor 46. The motor 46 is installed between the top surface of the support base 1 and the top surface of the support plate 2. A cover plate assembly 5 is provided on the top surface of the heat-conducting sieve box 41 for internal insulation and leak prevention. A grinding component 6 is provided on the top surface of the support base 1, which is away from the end of the drive gear 45. During the drying process, the soil is poured into the heat-conducting sieve box 41, and then the heater 3 is turned on to heat the heat-conducting sieve box 41, which can dry the soil inside the heat-conducting sieve box 41. After the initial drying, the motor 46 runs and drives the drive gear 45 to rotate. When the drive gear 45 rotates, it drives the driven gear 44 to rotate, thereby driving the heat-conducting sieve box 41 to rotate. At this time, the stone particles with a density greater than that of the soil are transferred to the bottom surface of the heat-conducting sieve box 41. Under the action of centrifugation, they are thrown into the debris collection box 42 through the filter trough 43 below. The plant residue with a density less than that of the soil is transferred to the top surface of the soil and is thrown into the debris collection box 42 through the filter trough 43 above. This removes impurities from the soil and also continues to dry the soil.

[0028] The bottom surface of the support base 1 is glued with anti-slip pads 7 to ensure the stability of the bottom surface of the support base 1. The bottom surface of the debris collection box 42 is flush with the bottom surface of the heat conduction screen box 41. The wall thickness of the debris collection box 42 is less than the wall thickness of the heat conduction screen box 41. The internal height of the debris collection box 42 is greater than the height of the heat conduction screen box 41, so that the debris is thrown into the debris collection box 42 and can be better collected, avoiding being thrown out.

[0029] In this embodiment, the cover plate assembly 5 includes a heat preservation cover plate 51, a heat conducting sieve box 41 and a sundry collecting box 42, the top surface of the heat conducting sieve box 41 and the sundry collecting box 42 is covered with the heat preservation cover plate 51, the bottom surface of the edge of the heat preservation cover plate 51 abuts against the top surface of the sundry collecting box 42, the bottom surface of the middle part of the heat preservation cover plate 51 is in sliding fit with the top surface of the heat conducting sieve box 41, the side edge of the heat preservation cover plate 51 is fixed with a connecting plate 52 which is sleeved on the T-shaped fixing rod 53, the bottom surface of the fixing rod 53 is fixed on the top surface of the supporting base 1, the outer surface of the fixing rod 53 below the heat conducting sieve box 41 is fixed with a limiting pad plate 54 for limiting the connecting plate 52, the top surface of the heat preservation cover plate 51 is fixed with a handle, the top part of the fixing rod 53 is located above the top part of the sundry collecting box 42, when drying and picking the sundries, the heat preservation cover plate 51 is rotated to cover the top surface of the sundry collecting box 42 and is in fit with the top surface of the heat conducting sieve box 41, so as to avoid rotating the heat conducting sieve box 41.

[0030] When the sample is completed drying and picking, the grinding assembly 6 can be used for grinding treatment, the grinding assembly 6 in this embodiment includes a servo air cylinder 61, the servo air cylinder 61 is symmetrically arranged on the side edge of the supporting table plate 2, the output end of the servo air cylinder 61 is fixed with a supporting plate 62, another supporting plate 62 is fixed on the side surface of the sealing cover 64 between the two supporting plates 62, the other supporting plate 62 is sleeved on the limiting rod 63, the bottom surface of the limiting rod 63 is fixed on the top surface of the supporting base 1, the two supporting plates 62 are both fixed on the side surface of the sealing cover 64, the sealing cover 64 covers the top surface of the heat conducting sieve box 41 and the sundry collecting box 42, the bottom surface of the sealing cover 64 is fixed with a fixed plate 65, the side edge of the fixed plate 65 is rotatably sleeved with a grinding roller 66 for grinding soil, when grinding, the heat preservation cover plate 51 is taken off from the sundry collecting box 42 by the handle, the heat preservation cover plate 51 is rotated, so that the connecting plate 52 abuts against the limiting pad plate 54, then the servo air cylinder 61 is opened, the servo air cylinder 61 drives the sealing cover 64 to move downward, drives the grinding roller 66 to abut against the bottom surface of the heat conducting sieve box 41, at the same time, drives the sealing sleeve 68 to sleeve outside the heat conducting sieve box 41, so that the inside of the heat conducting sieve box 41 is sealed, the motor 46 continues to operate to drive the heat conducting sieve box 41 to rotate, at this time, the grinding roller 66 grinds the soil in the heat conducting sieve box 41, after grinding, the servo air cylinder 61 drives the sealing cover 64 to move upward, the heat conducting sieve box 41 is opened, the sealing cover 64 moves to drive the other supporting plate 62 to slide on the limiting rod 63.

[0031] Further, the sealing cover 64 is fixed with a sealing sleeve 68 which is sleeved on the outer surface of the heat-conducting sieve box 41, the outer diameter of the sealing sleeve 68 is smaller than the inner diameter of the sundry collecting box 42, the height of the sealing sleeve 68 is equal to the height of the heat-conducting sieve box 41, the bottom surface of the grinding roller 66 is flush with the bottom surface of the sealing sleeve 68, so that the grinding effect of the grinding roller 66 is ensured, the scraping plate 67 is sleeved on the top surface of the grinding roller 66, the scraping plate 67 is fixed on the side surface of the fixed plate 65, the length of the scraping plate 67 is equal to the height of the grinding roller 66, and the width of the scraping plate 67 is smaller than the width of the fixed plate 65, so that the soil adhered to the surface of the grinding roller 66 can be scraped in time during grinding, and the influence of the excessive soil adhered to the surface of the grinding roller 66 on the grinding effect is avoided.

[0032] In addition, it needs to be further pointed out that, when it is needed to flatten the soil before drying, the servo cylinder 61 is first opened, the sealing cover 64 is driven to move downwards, the grinding roller 66 is gradually moved downwards, and the grinding roller 66 is inserted into the soil, at the same time, the motor 46 drives the heat-conducting sieve box 41 to rotate, and when the heat-conducting sieve box 41 rotates, the soil in the heat-conducting sieve box 41 is pushed by the grinding roller 66 to be flattened, so that the drying effect is ensured.

[0033] In the description of the present application, the terms "first", "second", "another", "yet another" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0034] In the description of the present application, it needs to be pointed out that, unless otherwise specifically specified and limited, the terms "connected", "connected" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or electrically connected, it can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0035] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A sample pretreatment device for detection, comprising a support base (1), characterized in that: A heater (3) is provided in the middle of the top surface of the support base (1), a drying and sorting component (4) is provided on the top surface of the heater (3), a support plate (2) is sleeved on the upper outer side of the heater (3), and the bottom of the support plate (2) is fixed to the top surface of the support base (1); The drying and sorting assembly (4) includes a heat-conducting screen box (41). The heat-conducting screen box (41) is rotatably mounted on the top surface of the heater (3) via a bearing. A debris collection box (42) for collecting debris is sleeved on the outside of the heat-conducting screen box (41). The bottom surface of the debris collection box (42) is fixedly mounted on the top surface of the support plate (2). Filter grooves (43) are symmetrically opened on the bottom and middle of the heat-conducting screen box (41). A driven gear (44) is fixed on the outer surface of the bottom of the heat-conducting screen box (41) extending to one end of the bottom of the support plate (2). A driving gear (45) is meshed with the side of the driven gear (44). The bottom of the driving gear (45) is rotatably connected to the inside of the support plate (2) via a bearing. One end of the driving gear (45) extending to the bottom surface of the support plate (2) is fixed on the output shaft of the motor (46). The motor (46) is installed between the top surface of the support base (1) and the top surface of the support plate (2).

2. The sample pretreatment device for detection according to claim 1, characterized in that... The bottom surface of the support base (1) is glued with anti-slip pads (7). The bottom surface of the debris collection box (42) is flush with the bottom surface of the heat-conducting screen box (41). The wall thickness of the debris collection box (42) is less than the wall thickness of the heat-conducting screen box (41). The internal height of the debris collection box (42) is greater than the height of the heat-conducting screen box (41).

3. The sample pretreatment device for detection according to claim 1, characterized in that... It also includes a cover plate assembly (5), which includes an insulation cover plate (51), a heat-conducting screen box (41) and a debris collection box (42). The top surface of the insulation cover plate (51) is covered by the insulation cover plate (51), and the side of the insulation cover plate (51) is fixed with a connecting plate (52) that is slidably sleeved on the T-shaped fixing rod (53). The bottom surface of the fixing rod (53) is fixed to the top surface of the support base (1).

4. The sample pretreatment device for detection according to claim 3, characterized in that: A limiting pad (54) is fixed on the outer surface of the fixing rod (53) below the heat-conducting screen box (41) to limit the connection plate (52). The top of the fixing rod (53) is located above the top of the debris collection box (42).

5. A sample pretreatment device for detection according to claim 3 or 4, characterized in that: The bottom edge of the heat insulation cover (51) abuts against the top surface of the debris collection box (42), and the bottom center of the heat insulation cover (51) slides against the top surface of the heat-conducting screen box (41).

6. The sample pretreatment device for detection according to claim 1, characterized in that: It also includes a grinding assembly (6), which includes a servo cylinder (61). The servo cylinder (61) is symmetrically arranged on the side of the support plate (2). The output end of the servo cylinder (61) is fixed with a support plate (62). Both support plates (62) are fixed on the side of the sealing cover (64). The sealing cover (64) covers the top surface of the heat-conducting screen box (41) and the debris collection box (42). The bottom surface of the sealing cover (64) is fixed with a fixing plate (65). The side of the fixing plate (65) is rotatably fitted with a grinding roller (66) for grinding soil.

7. The sample pretreatment device for detection according to claim 6, characterized in that: Another support plate (62) is fixed to the side of the sealing cover (64) between the two support plates (62). The other support plate (62) is slidably sleeved on the limiting rod (63). The bottom surface of the limiting rod (63) is fixed to the top surface of the support base (1).

8. A sample pretreatment device for detection according to claim 6, characterized in that: The bottom surface of the sealing cover (64) is fixed with a sealing sleeve (68) that fits and is fitted on the outer surface of the heat-conducting screen box (41). The outer diameter of the sealing sleeve (68) is smaller than the inner diameter of the debris collection box (42). The height of the sealing sleeve (68) is equal to the height of the heat-conducting screen box (41). The bottom surface of the grinding roller (66) is flush with the bottom surface of the sealing sleeve (68).

9. A sample pretreatment device for detection according to claim 6, characterized in that: A scraper (67) is slidably fitted on the top surface of the grinding roller (66). The scraper (67) is fixed to the side of the fixing plate (65). The length of the scraper (67) is equal to the height of the grinding roller (66), and the width of the scraper (67) is less than the width of the fixing plate (65).

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