Differential centrifugal device for water quality monitoring

Abstract

The utility model relates to the technical field of water quality monitoring, and discloses a differential centrifugal device for water quality monitoring, which comprises a bottom plate and a mounting shell, and further comprises a clamping assembly arranged in a containing cavity and used for increasing the loading and unloading speed of a centrifugal tube, the driving assembly is arranged on one side of the mounting shell and can provide rotating force for the transmission shaft. According to the utility model, the synchronous positioning of the centrifugal tubes in the plurality of placing grooves can be realized through the clamping assembly, so that the loading and unloading process of the centrifugal tubes is simplified, the loading and unloading difficulty of the centrifugal tubes is reduced, and the labor burden of detection personnel is relieved; the rotating drum is driven by the driving assembly to rotate to separate and precipitate different substance particles in a water sample, the turbidity test of a water body is completed, the conditions of distortion, breakage and the like of the transmission shaft due to overlarge centrifugal force can be avoided through the limiting assembly, and the stability of the structure is improved.

Description

Technical Field

[0001] This utility model relates to the field of water quality monitoring technology, specifically a differential centrifuge device for water quality monitoring. Background Technology

[0002] Differential centrifuges are a common type of laboratory centrifuge. They use a differential motor to gradually increase the centrifugation speed to separate and precipitate different particles in a sample. This method is suitable for separating components with large differences in sedimentation coefficients in a mixed sample. Differential centrifuges are often used in water quality monitoring. The testing personnel first collect water samples from multiple locations along the river, and then use a differential centrifuge to separate and precipitate different particles in the water samples. This completes the raw water turbidity test and allows for a direct understanding of the water pollution status based on the turbidity level, which is helpful for planning subsequent river water body remediation work.

[0003] When using existing differential centrifuge devices for water quality monitoring, the centrifuge tubes are typically positioned and fixed in the tanks by using a separate clamping structure. This means that when a large number of water samples are collected, staff need to repeatedly load and unload centrifuge tubes from multiple tanks in multiple batches. This is not only cumbersome but also time-consuming, which hinders the progress of water quality monitoring. Utility Model Content

[0004] The purpose of this invention is to provide a differential centrifuge device for water quality monitoring to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a differential centrifuge device for water quality monitoring, comprising a base plate and a mounting shell, wherein the bottom of the mounting shell is connected to the base plate, a rotating drum is coaxially arranged inside the mounting shell, a conical block is installed at the top of the inner cavity of the rotating drum, multiple placement slots are formed at the top edge of the conical block, each placement slot is provided with a centrifuge tube, and a receiving cavity is formed inside the conical block, further comprising:

[0006] A clamping assembly is installed inside the receiving cavity to improve the loading and unloading speed of centrifuge tubes. A drive shaft is coaxially fixedly installed at the bottom of the drum, and the bottom end of the drive shaft is rotatably connected to the base plate through a bearing.

[0007] A drive assembly that provides rotational force to the drive shaft is provided on one side of the mounting housing. The bottom of the conical block is provided with a support plate, which is fixedly installed at the bottom of the drum cavity. A limiting assembly that keeps the drum stable during rotation is provided at the bottom edge of the drum.

[0008] Preferably, the clamping assembly includes a bidirectional ball screw disposed inside the receiving cavity. The bidirectional ball screw is rotatably connected to both sides of the inner wall of the receiving cavity via bearings. Both ends of the bidirectional ball screw are coaxially helically connected to internal threaded sleeves. The outer side of the internal threaded sleeve is provided with a first U-shaped seat corresponding to the number of placement slots. One side of the first U-shaped seat is connected to the internal threaded sleeve. A limiting groove is formed on one side of the inner wall of the placement slot. The placement slot is connected to the inside of the receiving cavity through the limiting groove. A clamping block is provided inside the limiting groove. A second U-shaped seat is fixedly connected to one side of the clamping block. A connecting rod is provided between the first U-shaped seat and the second U-shaped seat. The connecting rod is connected to the first U-shaped seat and the second U-shaped seat via a rotating shaft. Rubber pads are fixedly connected to the other side of the clamping block and the inner wall of the placement slot.

[0009] Preferably, the drive assembly includes a motor compartment disposed on one side of the mounting housing, a differential motor is fixedly installed inside the motor compartment, the output end of the differential motor extends through to the outside of the base plate and is fixedly connected to a second idler wheel, the bottom end of the drive shaft extends through to the outside of the base plate and is fixedly connected to a first idler wheel, and the first idler wheel and the second idler wheel are connected by a drive belt.

[0010] Preferably, a protective shell is installed at the bottom of the base plate, the protective shell is located outside the first idler wheel, and a supporting skirt is provided around the protective shell, the top of the supporting skirt being connected to the base plate.

[0011] Preferably, the motor compartment has a groove on the side away from the mounting shell, and multiple heat dissipation vents are opened on one side of the groove. The multiple heat dissipation vents are equidistantly distributed along the axial direction of the motor compartment, and the motor compartment is connected to the outside through the heat dissipation vents.

[0012] Preferably, the limiting component includes an annular slider fixed to the bottom of the inner cavity of the drum, and the top of the base plate has an annular groove corresponding to the annular slider, with the annular slider located inside the annular groove.

[0013] Preferably, a sealing cover is hinged to the top of one side of the mounting housing, and the free end of the sealing cover is connected to the other side of the mounting housing by a snap fastener.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention enables simultaneous positioning of centrifuge tubes inside multiple placement tanks via a clamping assembly, simplifying the loading and unloading process, reducing the difficulty of loading and unloading centrifuge tubes, and alleviating the workload of testing personnel. The drive assembly rotates the drum to separate and precipitate different particles in the water sample, completing the turbidity test of the water. Furthermore, the limiting assembly prevents the drive shaft from twisting or breaking due to excessive centrifugal force, thus improving the stability of the structure. Attached Figure Description

[0016] Figure 1 A schematic diagram of the differential centrifuge device for water quality monitoring provided by this utility model;

[0017] Figure 2 A schematic diagram of the rear view structure provided for this utility model;

[0018] Figure 3 A schematic diagram of the internal structure of the mounting shell provided by this utility model;

[0019] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Base plate; 2. Mounting shell; 3. Drum; 4. Drive shaft; 5. Drive assembly; 51. Motor compartment; 52. Differential motor; 53. First idler wheel; 54. Second idler wheel; 6. Protective shell; 7. Groove; 8. Heat dissipation vent; 9. Limiting assembly; 91. Annular slider; 92. Annular groove; 10. Support skirt; 11. Support plate; 12. Conical block; 13. Placement slot; 14. Centrifuge tube; 15. Receiving cavity; 16. Clamping assembly; 161. Bidirectional ball screw; 162. Internal threaded sleeve; 163. First U-shaped seat; 164. Connecting rod; 165. Limiting groove; 166. Clamping block; 167. Second U-shaped seat; 168. Rubber pad; 17. Sealing cover. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 As shown, a differential centrifuge device for water quality monitoring includes a base plate 1 and a mounting shell 2. The bottom of the mounting shell 2 is connected to the base plate 1. A rotating drum 3 is coaxially arranged inside the mounting shell 2. A conical block 12 is installed at the top of the inner cavity of the rotating drum 3. Figure 1 , Figure 3As shown, in actual use, to facilitate the assembly and disassembly of the conical block 12, the top of the conical block 12 can be installed on the top of the inner cavity of the drum 3 using hexagonal socket screws; multiple placement slots 13 are provided at the top edge of the conical block 12, and each placement slot 13 contains a centrifuge tube 14. The conical block 12 has a receiving cavity 15 inside, and also includes: a clamping component 16 set inside the receiving cavity 15 to improve the loading and unloading speed of the centrifuge tube 14. By setting the clamping component 16, the centrifuge tubes 14 inside the multiple placement slots 13 can be synchronously positioned, thus simplifying the loading and unloading process of the centrifuge tubes 14 and reducing the difficulty of loading and unloading the centrifuge tubes 14; a drive shaft 4 is coaxially fixedly installed at the bottom of the drum 3, and the bottom end of the drive shaft 4 passes through a shaft The bearing is rotatably connected to the base plate 1; a drive assembly 5 is set on one side of the mounting shell 2 to provide rotational force to the drive shaft 4. By setting the drive assembly 5, the drum 3 can be rotated, thus separating and settling different particles in the water sample to complete the turbidity test of the water body; a support plate 11 is provided at the bottom of the cone block 12, and the support plate 11 is fixedly installed at the bottom of the inner cavity of the drum 3. A limiting assembly 9 is provided at the bottom edge of the drum 3 to keep the drum 3 stable when rotating. By setting the limiting assembly 9, on the one hand, the drum 3 is kept stable and smooth when driven by the drive assembly 5, and on the other hand, the centrifugal force on the drive shaft 4 can be shared, avoiding the drive shaft 4 from twisting or breaking due to excessive centrifugal force, thus improving the stability of the structure.

[0023] The clamping assembly 16 includes a bidirectional ball screw 161 disposed inside the receiving cavity 15. The bidirectional ball screw 161 is rotatably connected to both sides of the inner wall of the receiving cavity 15 via bearings. Both ends of the bidirectional ball screw 161 are coaxially helically connected to internal threaded sleeves 162. The outer side of the internal threaded sleeves 162 is provided with a first U-shaped seat 163 corresponding to the number of placement slots 13. One side of the first U-shaped seat 163 is connected to the internal threaded sleeve 162. A limit groove 165 is formed on one side of the inner wall of the placement slot 13. The placement groove 13 is connected to the interior of the receiving cavity 15 via a limiting groove 165. A clamping block 166 is provided inside the limiting groove 165. A second U-shaped seat 167 is fixedly connected to one side of the clamping block 166. A connecting rod 164 is provided between the first U-shaped seat 163 and the second U-shaped seat 167. The connecting rod 164 is connected to the first U-shaped seat 163 and the second U-shaped seat 167 respectively via a rotating shaft. Rubber pads 168 are fixedly connected to the other side of the clamping block 166 and the inner wall of the placement groove 13. Figure 3As shown, the two-way ball screw 161 can drive the two internal threaded sleeves 162 on its outer side to move closer to each other. The two internal threaded sleeves 162 then drive the clamping block 166 to slide along the limiting groove 165 through the first U-shaped seat 163, the connecting rod 164, and the second U-shaped seat 167 until the rubber pad 168 on one side of the clamping block 166 of each limiting groove 165 is in tight contact with the outer wall of the centrifuge tube 14. In this way, the synchronous positioning of the centrifuge tubes 14 inside the multiple placement slots 13 is realized, which simplifies the loading and unloading process of the centrifuge tubes 14, reduces the difficulty of loading and unloading the centrifuge tubes 14, and reduces the workload of the testing personnel.

[0024] Drive assembly 5 includes a motor compartment 51 located on one side of mounting housing 2. A differential motor 52 is fixedly installed inside the motor compartment 51. The output end of the differential motor 52 extends through to the outside of the base plate 1 and is fixedly connected to a second idler pulley 54. The bottom end of the drive shaft 4 extends through to the outside of the base plate 1 and is fixedly connected to a first idler pulley 53. The first idler pulley 53 and the second idler pulley 54 are connected by a drive belt. Figure 2 , Figure 3 As shown, the differential motor 52 drives the first idler wheel 53 to rotate, and the first idler wheel 53 then drives the transmission shaft 4 to rotate through the second idler wheel 54. In this way, the drum 3 rotates to separate and precipitate different particles in the water sample, thus completing the turbidity test of the water body.

[0025] A protective shell 6 is installed at the bottom of the base plate 1. The protective shell 6 is located outside the first idler wheel 53. A supporting skirt 10 is provided around the protective shell 6. The top of the supporting skirt 10 is connected to the base plate 1. Figure 3 As shown, by setting the protective shell 6, on the one hand, it can prevent the human body from being injured by direct contact with the first idler wheel 53 and the second idler wheel 54, and on the other hand, it can prevent external dust and other impurities from entering between the first idler wheel 53 and the second idler wheel 54 and affecting their fitting accuracy.

[0026] The motor housing 51 has a groove 7 on the side away from the mounting shell 2. Multiple heat dissipation vents 8 are formed on one side of the groove 7. These vents 8 are equidistantly distributed along the axial direction of the motor housing 51. The motor housing 51 is connected to the outside through these heat dissipation vents 8. Figure 2 As shown, by setting the heat dissipation vent 8, the heat exchange rate inside and outside the motor compartment 51 can be accelerated, so that the working heat of the differential motor 52 can be better dissipated.

[0027] The limiting component 9 includes an annular slider 91 fixed to the bottom of the inner cavity of the drum 3. An annular groove 92 corresponding to the annular slider 91 is provided on the top of the base plate 1. The annular slider 91 is located inside the annular groove 92. Figure 3 As shown, by setting the annular slider 91 and the annular groove 92, the rotating drum 3 can be kept stable and smooth when rotating, and the transmission shaft 4 can be prevented from twisting or breaking due to excessive centrifugal force, thus improving the stability of the structure.

[0028] A sealing cover 17 is hinged to the top of one side of the mounting housing 2. The free end of the sealing cover 17 is connected to the other side of the mounting housing 2 by a snap-fit. Figure 1 As shown, by setting a sealing cover plate 17, the centrifuge tube 14 can be restricted from the top, thus preventing the centrifuge tube 14 from being thrown out due to excessive centrifugal force.

[0029] Working principle: First, the testing personnel place the centrifuge tubes 14 containing the water sample to be tested into the placement tank 13. Then, the clamping component 16 can realize the synchronous positioning of the centrifuge tubes 14 in multiple placement tanks 13, which simplifies the loading and unloading process of the centrifuge tubes 14, reduces the difficulty of loading and unloading the centrifuge tubes 14, and reduces the workload of the testing personnel. After the centrifuge tubes 14 are positioned, the drive component 5 drives the drum 3 to rotate to separate and precipitate different particles in the water sample, thus completing the turbidity test of the water. In addition, the limiting component 9 can prevent the drive shaft 4 from twisting or breaking due to excessive centrifugal force, thus improving the stability of the structure.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A differential centrifuge device for water quality monitoring, comprising a base plate (1) and a mounting case (2), characterized in that, The bottom of the mounting shell (2) is connected to the base plate (1). A rotating drum (3) is coaxially arranged inside the mounting shell (2). A conical block (12) is installed at the top of the inner cavity of the rotating drum (3). Multiple placement slots (13) are opened at the top edge of the conical block (12). A centrifuge tube (14) is provided inside each placement slot (13). A receiving cavity (15) is opened inside the conical block (12). It also includes: A clamping assembly (16) is set inside the receiving cavity (15) to improve the loading and unloading speed of centrifuge tubes (14). A drive shaft (4) is coaxially fixedly installed at the bottom of the drum (3). The bottom end of the drive shaft (4) is rotatably connected to the base plate (1) through a bearing. A drive assembly (5) is provided on one side of the mounting housing (2) to provide rotational force to the drive shaft (4). The bottom of the conical block (12) is provided with a support plate (11). The support plate (11) is fixedly installed at the bottom of the inner cavity of the drum (3). A limiting assembly (9) is provided at the bottom edge of the drum (3) to keep the drum (3) stable when it rotates.

2. The differential centrifuge device for water quality monitoring according to claim 1, characterized in that: The clamping assembly (16) includes a bidirectional ball screw (161) disposed inside the receiving cavity (15). The bidirectional ball screw (161) is rotatably connected to both sides of the inner wall of the receiving cavity (15) via bearings. Both ends of the bidirectional ball screw (161) are coaxially helically connected to internal thread sleeves (162). The outer side of the internal thread sleeves (162) is provided with a first U-shaped seat (163) corresponding to the number of placement slots (13). One side of the first U-shaped seat (163) is connected to the internal thread sleeve (162). A limit groove (165) is provided on one side of the inner wall of the placement slot (13). The placement groove (13) is connected to the inside of the receiving cavity (15) through the limiting groove (165). The limiting groove (165) is provided with a pressing block (166). A second U-shaped seat (167) is fixedly connected to one side of the pressing block (166). A connecting rod (164) is provided between the first U-shaped seat (163) and the second U-shaped seat (167). The connecting rod (164) is connected to the first U-shaped seat (163) and the second U-shaped seat (167) respectively through a rotating shaft. A rubber pad (168) is fixedly connected to the other side of the pressing block (166) and the inner wall of the placement groove (13).

3. The differential centrifuge device for water quality monitoring according to claim 1, characterized in that: The drive assembly (5) includes a motor compartment (51) disposed on one side of the mounting housing (2). A differential motor (52) is fixedly installed inside the motor compartment (51). The output end of the differential motor (52) extends through to the outside of the base plate (1) and is fixedly connected to a second idler wheel (54). The bottom end of the drive shaft (4) extends through to the outside of the base plate (1) and is fixedly connected to a first idler wheel (53). The first idler wheel (53) and the second idler wheel (54) are connected by a drive belt.

4. The differential centrifuge device for water quality monitoring according to claim 3, characterized in that: The bottom of the base plate (1) is equipped with a protective shell (6), which is located outside the first idler wheel (53). The protective shell (6) is provided with a supporting skirt (10) around its periphery, and the top of the supporting skirt (10) is connected to the base plate (1).

5. The differential centrifuge device for water quality monitoring according to claim 3, characterized in that: The motor compartment (51) has a groove (7) on the side away from the mounting shell (2). Multiple heat dissipation vents (8) are opened on one side of the groove (7). The multiple heat dissipation vents (8) are equidistantly distributed along the axial direction of the motor compartment (51). The motor compartment (51) is connected to the outside through the heat dissipation vents (8).

6. The differential centrifuge device for water quality monitoring according to claim 1, characterized in that: The limiting component (9) includes an annular slider (91) fixed to the bottom of the inner cavity of the drum (3). The top of the base plate (1) is provided with an annular groove (92) corresponding to the annular slider (91). The annular slider (91) is located inside the annular groove (92).

7. The differential centrifuge device for water quality monitoring according to claim 1, characterized in that: A sealing cover plate (17) is hinged to the top of one side of the mounting shell (2), and the free end of the sealing cover plate (17) is connected to the other side of the mounting shell (2) by a snap fastener.

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