Centrifugal machine material layer detection device and centrifugal machine

Abstract

The utility model relates to the technical field of centrifuges, and discloses a centrifuge material layer detection device and a centrifuge. The centrifugal machine material layer detection device comprises a shell assembly, a rotary drum, a driving assembly and a millimeter wave radar, and the shell assembly is provided with a cavity; the rotary drum is rotationally arranged in the cavity; the driving assembly is in driving connection with the rotary drum, so that a filter cake can be formed on the inner wall of the rotary drum; the millimeter-wave radar is arranged in the cavity, and the detection end of the millimeter-wave radar faces the inner wall of the rotary drum. The centrifugal machine material layer detection device can accurately judge the whole process from feeding to material fullness, it is guaranteed that the maximum filter cake thickness is formed in a rotary drum, and the highest yield of a centrifugal machine is guaranteed. Moreover, the millimeter wave radar is used for detection, the structure is simple, the measurement precision is high, and the millimeter wave radar has strong penetrating power and is not influenced by water vapor and splashed materials, so that the thickness of the filter cake can be accurately measured even if the closed rotary drum is filled with gas, water mist and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuges, in particular to a centrifuge material layer detection device and a centrifuge. Background Art

[0002] Centrifuges are widely used in the pharmaceutical, chemical, food and other industries. They are mainly used to separate and dry the liquid components in the material. The centrifuge includes a housing, and a drum is arranged inside the housing. When the drum rotates, the material forms a filter cake on the inner wall of the drum through centrifugal force. As the feed amount increases, the thickness of the material attached to the inner wall of the drum will also increase. In order to ensure the normal operation of the centrifuge and prevent the drum from overloading, the material input into the drum must not exceed the set load range.

[0003] Patent CN2748180Y discloses a material layer detection device that can accurately detect the thickness of the material in the drum. When the material exceeds the set range, the material will contact the detection plate, and then push the detection plate to rotate. The detection plate will drive the transmission shaft to rotate an angle, and the transmission shaft will drive the transmission sleeve to rotate. The notch on the transmission sleeve will be out of contact, that is, the transmission sleeve will push the contact and make the micro switch send an electrical signal. After the signal is received by the control device, the feeding device can be controlled to stop feeding, thereby ensuring that the drum will not be overloaded and the normal operation of the entire centrifuge. However, the above-mentioned thickness detection structure is more complicated, and it is impossible to detect the thickness of the material in real time; and there are many transmission mechanisms, which are prone to transmission failures.

[0004] Based on this, there is an urgent need for a centrifuge material layer detection device and a centrifuge to solve the above-mentioned problems. Utility Model Content

[0005] Based on the above, the purpose of the utility model is to provide a centrifuge material layer detection device and a centrifuge, which can realize accurate judgment of the whole process from feeding to full material, and ensure the maximum output of the centrifuge; and the structure is simple, and the filter cake thickness can be accurately measured in a closed drum even if it is filled with gas, water mist, etc.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] On the one hand, a centrifuge material layer detection device is provided, comprising:

[0008] A housing assembly, wherein the housing assembly is provided with a chamber;

[0009] a rotating drum rotatably disposed in the chamber;

[0010] A driving assembly, which is drivingly connected to the drum so that a filter cake can be formed on the inner wall of the drum;

[0011] A millimeter wave radar is arranged in the chamber, and a detection end of the millimeter wave radar faces the inner wall of the rotating drum.

[0012] As a preferred technical solution for a centrifuge material layer detection device, the shell assembly includes a shell and a cover plate, the top of the shell is provided with an opening, the cover plate is detachably connected to the opening, and the millimeter wave radar is connected to the cover plate.

[0013] As a preferred technical solution for a centrifuge material layer detection device, the detection axis of the millimeter wave radar is arranged to be inclined relative to the inner wall of the drum.

[0014] As a preferred technical solution for a centrifuge material layer detection device, the shell assembly also includes a fixing seat, the fixing seat is connected to the outer wall of the cover plate, the fixing seat is provided with a mounting hole, and the millimeter wave radar is detachably connected to the mounting hole.

[0015] As a preferred technical solution of a centrifuge material layer detection device, the fixing seat is welded to the outer wall of the cover plate; or

[0016] The fixing seat and the cover plate are integrally formed.

[0017] As a preferred technical solution for a centrifuge material layer detection device, the millimeter wave radar is connected to the fixing seat by threading, clamping or by fasteners.

[0018] As a preferred technical solution of a centrifuge material layer detection device, the centrifuge material layer detection device also includes a controller, and the millimeter wave radar is electrically connected to the controller.

[0019] As a preferred technical solution for a centrifuge material layer detection device, the driving assembly includes a main shaft and a driving component, the drum is connected to the main shaft, the driving component is drivingly connected to the main shaft, and the driving component is used to drive the main shaft to rotate.

[0020] As a preferred technical solution for a centrifuge material layer detection device, the driving component includes a motor, a synchronous belt and two synchronous pulleys, the motor is connected to the housing assembly, one synchronous pulley is arranged at the output end of the motor, and the other synchronous pulley is arranged on the main shaft, and the synchronous belt is respectively wound around the two synchronous pulleys.

[0021] On the other hand, a centrifuge is provided, comprising the centrifuge material layer detection device described in any of the above schemes.

[0022] The beneficial effects of the utility model are:

[0023] The utility model provides a centrifuge material layer detection device and a centrifuge. When working, the driving component drives the drum to rotate, and the material in the drum forms a filter cake on the inner wall of the drum under the action of centrifugal force; during the feeding process, the detection end of the millimeter wave radar transmits a signal to the inner wall of the drum, scans the reflected signal in front, and judges the distance according to the time of receiving the signal, establishes a three-dimensional model through an intelligent algorithm, and then performs intelligent analysis on the three-dimensional model generated in real time, compares it with the previously scanned model, detects the thickness of the filter cake accumulation, and realizes real-time detection of the thickness of the filter cake. When it is detected that the filter cake reaches a preset thickness, the feeding is terminated. The centrifuge material layer detection device can accurately judge the entire process from feeding to full material, ensure the maximum filter cake thickness formed in the drum, and ensure the highest output of the centrifuge. Furthermore, the detection by the millimeter wave radar has a simple structure and high measurement accuracy, and the millimeter wave radar has a strong penetration ability and will not be affected by water vapor and splashing. Therefore, in a closed drum, even if it is full of gas, water mist, etc., the filter cake thickness can be accurately measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. 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 the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0025] Figure 1 It is a structural schematic diagram of a centrifuge material layer detection device provided in a specific embodiment of the utility model;

[0026] Figure 2 The centrifuge material layer detection device provided by the specific embodiment of the utility model is used when feeding Figure 1 The enlarged view of point A in the middle;

[0027] Figure 3 The centrifuge material layer detection device provided by the specific embodiment of the utility model is Figure 1 Enlarged view of point A in the middle.

[0028] The following are marked in the figure:

[0029] 10. Filter cake;

[0030] 1. Shell assembly; 11. Shell; 12. Cover plate; 13. Fixing seat; 14. Chamber;

[0031] 2. Rotating drum;

[0032] 3. driving assembly; 31. spindle; 32. driving component; 321. motor; 322. synchronous belt; 323. synchronous pulley;

[0033] 4. Millimeter wave radar. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] like Figure 1-Figure 3As shown, this embodiment provides a centrifuge, including a centrifuge material layer detection device, which includes a housing assembly 1, a drum 2, a drive assembly 3 and a millimeter wave radar 4. Specifically, the housing assembly 1 is provided with a chamber 14; the drum 2 is rotatably arranged in the chamber 14; the drive assembly 3 is driven and connected to the drum 2 so that the inner wall of the drum 2 can form a filter cake 10; the millimeter wave radar 4 is arranged in the chamber 14, and the detection end of the millimeter wave radar 4 faces the inner wall of the drum 2.

[0039] When working, the driving component 3 drives the drum 2 to rotate, and the material in the drum 2 forms a filter cake 10 on the inner wall of the drum 2 under the action of centrifugal force; during the feeding process, the detection end of the millimeter wave radar 4 transmits a signal to the inner wall of the drum 2, scans the reflected signal in front, and judges the distance according to the time of receiving the signal, establishes a three-dimensional model through an intelligent algorithm, and then performs intelligent analysis on the three-dimensional model generated in real time, compares it with the previously scanned model, detects the thickness of the filter cake 10 accumulation, and realizes real-time detection of the thickness of the filter cake 10. When it is detected that the filter cake 10 reaches a preset thickness, the feeding is terminated. The centrifuge material layer detection device can accurately judge the entire process from feeding to full material, ensure the maximum thickness of the filter cake 10 formed in the drum 2, and ensure the highest output of the centrifuge. Furthermore, the detection by the millimeter wave radar 4 has a simple structure and high measurement accuracy, and the millimeter wave radar 4 has a strong penetration ability and will not be affected by water vapor and splashing. Therefore, in the closed drum 2, even if it is full of gas, water mist, etc., the thickness of the filter cake 10 can be accurately measured.

[0040] It should be noted that the working principle of the millimeter wave radar 4 scanning the front to generate a three-dimensional model is an existing technology and will not be described here. Furthermore, the millimeter wave radar 4 detects through millimeter waves, not through material color difference or visual error, so it has no requirements for light sources and can detect in dark light conditions without adding additional lighting, saving energy.

[0041] Furthermore, the housing assembly 1 includes a housing 11 and a cover plate 12. The top of the housing 11 is provided with an opening, the cover plate 12 is detachably connected to the opening, and the millimeter wave radar 4 is connected to the cover plate 12. The driving assembly 3 is arranged below the chamber 14, and the millimeter wave radar 4 is arranged above the chamber 14. The millimeter wave radar 4 arranged on the cover plate 12 will not interfere with the actions of other components.

[0042] Preferably, the detection axis of the millimeter wave radar 4 is tilted relative to the inner wall of the drum 2. When the distance between the millimeter wave radar 4 and the inner wall of the drum 2 is constant, the tilted millimeter wave radar 4 can increase the scanning area and improve the comprehensiveness of the data. It should be noted that the distance between the millimeter wave radar 4 and the inner wall of the drum 2, and the tilt angle of the detection axis of the millimeter wave radar 4 relative to the inner wall of the drum 2 can be adaptively designed according to needs.

[0043] Furthermore, the housing assembly 1 further comprises a fixing seat 13, the fixing seat 13 is connected to the outer wall of the cover plate 12, the fixing seat 13 is provided with a mounting hole, the millimeter wave radar 4 is detachably connected to the mounting hole, and the millimeter wave of the millimeter wave radar 4 can be emitted to the inner wall of the drum 2 through the mounting hole and the chamber 14. On the one hand, compared with the direct installation of the millimeter wave radar 4 on the side wall of the cover plate 12, the detection end of the millimeter wave radar 4 is located in the fixing seat 13, and does not need to be exposed on the inner side of the cover plate 12, which can reduce the amount of material in the drum 2 splashing to the millimeter wave radar 4, and thus can protect the millimeter wave radar 4; on the other hand, the length of the mounting hole is greater than the thickness of the side wall of the cover plate 12, and compared with the direct installation of the millimeter wave radar 4 on the side wall of the cover plate 12, the contact area between the millimeter wave radar 4 and the mounting hole is large, which improves the installation stability of the millimeter wave radar 4.

[0044] In this embodiment, the fixing seat 13 is welded to the outer wall of the cover plate 12 to reduce the process difficulty. In other embodiments, the fixing seat 13 and the cover plate 12 can also be integrally formed.

[0045] Preferably, the millimeter wave radar 4 is threaded, clamped or connected to the fixing seat 13 through a fastener. The fastener can be a flange, the millimeter wave radar 4 is fixed on the flange, and the flange is connected to the end surface of the fixing seat 13 through screws.

[0046] In this embodiment, the centrifuge material layer detection device also includes a controller, and the millimeter wave radar 4 is electrically connected to the controller. The controller obtains the maximum thickness of the filter cake 10 according to the data of the millimeter wave radar 4, and the controller controls whether the centrifuge is fed and the subsequent dehydration work according to the detected thickness information. It should be noted that the centrifuge material layer detection device can also separate materials that are difficult to separate. Since the millimeter wave radar 4 can accurately and in real time detect the thickness of the filter cake 10, the filter cake 10 is first dehydrated after reaching a certain thickness, and multiple cycles are performed to achieve multiple feeding and dehydration, achieve the effect of layered filtration, and achieve effective separation of difficult-to-separate materials.

[0047] It should be noted that the controller receives the signal of the millimeter-wave radar 4, which is a mature technology in the prior art. The specific working principle, the model of the controller and the specific wired or wireless connection method with the millimeter-wave radar 4 are not repeated here.

[0048] The centrifuge material layer detection device also includes a display screen, and the thickness information of the filter cake 10 can be displayed on the display screen in real time, thereby increasing the convenience of work.

[0049] Furthermore, the driving assembly 3 includes a main shaft 31 and a driving component 32 . The drum 2 is connected to the main shaft 31 . The driving component 32 is drivingly connected to the main shaft 31 . The driving component 32 is used to drive the main shaft 31 to rotate, thereby driving the drum 2 to rotate.

[0050] In this embodiment, the driving component 32 includes a motor 321, a synchronous belt 322 and two synchronous pulleys 323. The motor 321 is connected to the housing assembly 1, a synchronous pulley 323 is arranged at the output end of the motor 321, and the other synchronous pulley 323 is arranged on the main shaft 31. The synchronous belt 322 is wound around the two synchronous pulleys 323. When the motor 321 drives the synchronous pulleys 323 to rotate, the drum 2 is driven to rotate through the synchronous belt 322 and the main shaft 31. The motor 321 is not arranged below the chamber 14, does not interfere with the discharge of the chamber 14, and simplifies the spatial structure layout design of the centrifuge.

[0051] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A centrifuge material layer detection device, characterized in that: include: A housing assembly (1), wherein the housing assembly (1) is provided with a chamber (14); A rotating drum (2) rotatably disposed in the chamber (14); A driving assembly (3) which is drivingly connected to the rotary drum (2) so that a filter cake (10) can be formed on the inner wall of the rotary drum (2); A millimeter wave radar (4) is arranged in the chamber (14), and a detection end of the millimeter wave radar (4) faces the inner wall of the rotating drum (2).

2. The centrifuge material layer detection device according to claim 1, characterized in that: The shell assembly (1) comprises a shell (11) and a cover plate (12); the top end of the shell (11) is provided with an opening; the cover plate (12) is detachably connected to the opening; and the millimeter wave radar (4) is connected to the cover plate (12).

3. The centrifuge material layer detection device according to claim 1, characterized in that: The detection axis of the millimeter wave radar (4) is arranged obliquely relative to the inner wall of the rotating drum (2).

4. The centrifuge material layer detection device according to claim 2, characterized in that: The housing assembly (1) further comprises a fixing seat (13), wherein the fixing seat (13) is connected to the outer wall of the cover plate (12), and the fixing seat (13) is provided with a mounting hole, and the millimeter wave radar (4) is detachably connected to the mounting hole.

5. The centrifuge material layer detection device according to claim 4, characterized in that: The fixing seat (13) is welded to the outer wall of the cover plate (12); or The fixing seat (13) and the cover plate (12) are integrally formed.

6. The centrifuge material layer detection device according to claim 4, characterized in that: The millimeter wave radar (4) is connected to the fixing seat (13) by threading, clamping or by means of fasteners.

7. The centrifuge material layer detection device according to claim 1, characterized in that: The centrifuge material layer detection device also includes a controller, and the millimeter wave radar (4) is electrically connected to the controller.

8. The centrifuge material layer detection device according to claim 1, characterized in that: The driving assembly (3) comprises a main shaft (31) and a driving component (32); the rotating drum (2) is connected to the main shaft (31); the driving component (32) is drivingly connected to the main shaft (31); and the driving component (32) is used to drive the main shaft (31) to rotate.

9. The centrifuge material layer detection device according to claim 8, characterized in that: The driving component (32) comprises a motor (321), a synchronous belt (322) and two synchronous pulleys (323); the motor (321) is connected to the housing assembly (1); one synchronous pulley (323) is arranged at the output end of the motor (321); the other synchronous pulley (323) is arranged on the main shaft (31); and the synchronous belt (322) is wound around the two synchronous pulleys (323).

10. A centrifuge, characterized in that: It comprises a centrifuge material layer detection device as described in any one of claims 1 to 9.

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