An ultrasonic sieving device for rock particle powder in a low-gravity environment on a celestial surface

Abstract

This invention provides an ultrasonic sieving device for rock particle powder in a low-gravity environment on a lunar surface. The device comprises an ultrasonic transducer including a rear end cover, a piezoelectric ceramic, and an amplitude transformer. The amplitude transformer includes a frustum and a flange. The rear end of the frustum is fixedly connected to the center of the flange. The diameter of the frustum gradually decreases from rear to front. The rear end of the piezoelectric ceramic is fixedly connected to the rear end cover, and the front end is fixedly connected to the flange. The edge of the flange is used to fix the transducer in place. The device also includes a screen frame and a mesh plate disposed within the screen frame. The screen is positioned along the length of the frustum, and the screen frame is fixedly connected to the front end of the amplitude transformer. The advantages of this invention are: it allows for fine sieving of rock particle powder in low-gravity environments such as on the moon, preventing powder from splashing under low gravity. It offers advantages such as high sieving accuracy, stable sieving process, small device size, high efficiency, and low power consumption. The overall size is reduced, meeting the needs of integrated and refined sieving scenarios.

Description

Technical Field

[0001] This utility model relates to the field of screening equipment technology, and in particular to an ultrasonic screening device for rock particle powder in a low gravity environment on a planetary surface. Background Technology

[0002] In-situ lunar construction technology is a supporting technology for the construction and operation of lunar bases. In in-situ lunar construction / manufacturing missions using lunar regolith as raw material, graded screening is required to obtain powders with different particle size requirements. In the low-gravity environment of the moon, the adhesion and agglomeration of particles and powders are aggravated. Existing industrial screening equipment is more prone to screen clogging and powder splashing during operation, and generally suffers from problems such as large space occupation, difficulty in miniaturization, and high energy consumption costs, which cannot meet the requirements of in-situ lunar construction / manufacturing missions using lunar regolith as raw material. Utility Model Content

[0003] In view of this, in order to solve the problems of screen clogging and powder splashing during screening in existing industrial screening equipment, the embodiments of this utility model provide an ultrasonic screening device for rock particle powder in a low gravity environment on a planetary surface.

[0004] An embodiment of this utility model provides an ultrasonic sieving device for rock particle powder in a low-gravity environment on a planetary surface, comprising: An ultrasonic transducer includes a rear end cover, a piezoelectric ceramic, and an amplitude transformer. The amplitude transformer includes a frustum and a flange. The rear end of the frustum is fixedly connected to the middle of the flange. The diameter of the frustum gradually decreases from back to front. The rear end of the piezoelectric ceramic is fixedly connected to the rear end cover, and the front end is fixedly connected to the flange. The edge of the flange is used to fix the transducer in place. The screen includes a screen frame and a screen plate disposed within the screen frame. The screen is disposed along the length of the frustum. The screen frame is fixedly connected to the front end of the amplitude transformer.

[0005] Furthermore, the flange is provided with an annular groove surrounding the truncated cone near the rear end of the cone.

[0006] Furthermore, the flange has multiple fixing holes on its edge, which are used to fix the flange.

[0007] Furthermore, the inner edge of the upper port of the sieve frame is provided with an arc-shaped chamfer.

[0008] Furthermore, the sieve frame is a circular frame, and the sieve frame is bisected by the axis of the frustum.

[0009] Furthermore, the sieve frame is detachably connected to the front end of the frustum.

[0010] Furthermore, the rear side of the screen frame is provided with an installation plane, the installation plane is provided with an installation hole, and the front end of the frustum is provided with a positioning post, the positioning post is inserted into the installation hole and threadedly connected to the installation hole.

[0011] Furthermore, the ultrasonic transducer also includes a fastening bolt, which is installed at the rear of the rear end cover, passes through the piezoelectric ceramic, and connects to the flange.

[0012] Furthermore, the rear end of the rear end cover is provided with a countersunk hole, and the fastening bolt is an internal hex bolt, with the head of the fastening bolt recessed into the countersunk hole.

[0013] Furthermore, clamping jaws are provided on both opposite sides of the frustum.

[0014] The beneficial effects of the technical solution provided by the embodiments of this utility model are as follows: 1. This utility model discloses an ultrasonic sieving device for rock particle powder in a low-gravity environment on a lunar surface. The flange edge of the amplitude transformer is fixed, and the powder to be sieved is poured into the screen. Axial vibration is output to the amplitude transformer through piezoelectric ceramics. The amplitude transformer amplifies the axial vibration and concentrates it into high-frequency axial vibration of the screen. The high-frequency axial vibration of the screen breaks up the powder agglomerates, and the fine powder settles slowly under low gravity, achieving fine sieving. It can be used for fine sieving of rock particle powder in low-gravity environments such as the moon and Mars. It can improve sieving efficiency, reduce the power requirements of the device, and avoid powder splashing under low gravity. It has the advantages of high sieving accuracy, stable sieving process, small device size, high efficiency and low power consumption.

[0015] 2. This utility model discloses an ultrasonic sieving device for rock particle powder in a low-gravity environment on a planetary surface. The flange threaded connection structure between the sieve frame and the amplitude transformer facilitates overall disassembly and adapts to the need for quick replacement of sieves with different mesh sizes. In addition, the overall size of the device is smaller than that of traditional ultrasonic sieving equipment, and it can be flexibly embedded in small production lines or laboratory equipment to meet the needs of integrated and fine sieving scenarios. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of an ultrasonic sieving device for rock particles and powder in a low-gravity environment on a planetary surface, according to this utility model. Figure 2 This is an exploded view of an ultrasonic sieving device for rock particles and powder in a low-gravity environment on a planetary surface, according to this utility model. Figure 3 This is a cross-sectional view of an ultrasonic sieving device for rock particles and powder in a low-gravity environment on a planetary surface, according to this utility model. Figure 4 This is a schematic diagram of a sieve; Figure 5 This is a schematic diagram of the amplitude transformer.

[0017] In the diagram: 1. Screen; 101. Screen frame; 102. Screen plate; 103. Mounting plane; 104. Mounting hole; 105. Chamfered corner; 2. Ultrasonic transducer; 201. Rear end cover; 202. Piezoelectric ceramic; 203. Amplitude bar; 204. Fastening bolt; 205. Positioning post; 206. Frustum; 207. Flange; 208. Annular groove; 209. Fixing hole; 210. Clamping jaw. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings. The following description presents a preferred embodiment of several possible embodiments of this utility model, intended to provide a basic understanding of the utility model, but not intended to identify the key or decisive elements of the utility model or to limit the scope of protection sought.

[0019] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0020] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures. Also, it should be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale.

[0022] In the description of this utility model, it should be noted that the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this utility model does not involve any improvement to the internal structure and method of the circuits, electronic components and modules.

[0023] It should be further noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please refer to Figure 1and 2 This invention provides an ultrasonic sieving device for rock particle powder in a low-gravity environment on a lunar surface. It is applied to the sieving of particle powder in the low-gravity environment of the moon. It is understood that this ultrasonic sieving device for rock particle powder in a low-gravity environment on a lunar surface can also be applied to the sieving of particle powder in low-gravity environments such as Mars and normal gravity environments on Earth. The ultrasonic sieving device for rock particle powder in a low-gravity environment of this invention mainly includes an ultrasonic transducer 2 and a screen 1.

[0025] like Figure 3 As shown, the ultrasonic transducer 2 is used to output the high-frequency vibration required for sieving by the screen 1. The ultrasonic transducer 2 mainly includes a rear end cover 201, a piezoelectric ceramic 202, and an amplitude transformer 203. The amplitude transformer 203 includes a frustum 206 and a flange 207. The rear end of the frustum 206 is fixedly connected to the middle of the flange 207. The diameter of the frustum 206 gradually decreases from back to front. The rear end of the piezoelectric ceramic 202 is fixedly connected to the rear end cover 201, and the front end is fixedly connected to the flange 207. The edge of the flange 207 is used to fix it in place. The amplitude transformer 203 is generally made of titanium alloy, and the frustum 206 and the flange 207 are integrally formed.

[0026] The rear end cover 201, the piezoelectric ceramic 202, and the amplitude transformer 203 can be fixedly connected by various existing fastening methods. In this embodiment, the ultrasonic transducer 2 further includes a fastening bolt 204, which is installed at the rear of the rear end cover 201, passes through the piezoelectric ceramic 202, and connects to the flange 207. Preferably, the rear end of the rear end cover 201 has a countersunk hole, and the fastening bolt 204 is an internal hex bolt, with its head recessed into the countersunk hole.

[0027] like Figure 4 As shown, the screen 1 includes a screen frame 101 and a mesh plate 102 disposed within the screen frame 101. The mesh plate 102 is bonded and fixed within the screen frame 101. The screen 1 is positioned along the length of the frustum 206, and the screen frame 101 is fixedly connected to the front end of the amplitude transformer 203. Generally, to ensure the maximum amplitude of the mesh plate 102 of the screen 1, the screen frame 101 is often designed as a circular frame, with the axis of the frustum 206 bisecting the screen frame 101. The screen 1 is generally made of stainless steel, and the inner and outer diameters of the screen frame 101 can be adjusted according to the actual application scenario.

[0028] Considering the need to sieve powder particles of different sizes, the sieve frame 101 is detachably connected to the front end of the frustum 206. Figure 5As shown, in this embodiment, the rear side of the sieve frame 101 is provided with a mounting plane 103, the mounting plane 103 is provided with a mounting hole 104, and the front end of the frustum 206 is provided with a positioning post 205. The positioning post 205 is inserted into the mounting hole 104 and threadedly connected to the mounting hole 104. The sieve 1 with different mesh sizes 102 can be selected according to actual needs to achieve the required sieving of powder particles.

[0029] Furthermore, in order to facilitate the turning of the screen frame 101 and the connection and disassembly of the positioning post 205 and the mounting hole 104, the frustum 206 is provided with clamping ports 210 on both sides. The two clamping ports 210 are symmetrically arranged. The amplitude rod 203 can be easily turned by clamping the two clamping ports 210 with a clamping tool.

[0030] The sieve frame 101 and the front end of the amplitude transformer 203 can be detachably fixedly connected. The edge of the flange 207 is fixedly installed in an external device in the laboratory or production line. When the piezoelectric ceramic 202 is energized, the front end can output axial vibration, which is transmitted to the amplitude transformer 203. The truncated cone 206 of the amplitude transformer 203 has a gradually decreasing diameter from back to front, forming a conical structure, which can amplify the ultrasonic longitudinal vibration amplitude. The amplified high-frequency axial vibration is concentrated and amplified to the sieve 1. The high-frequency axial vibration of the sieve 1 breaks up the powder agglomerates, and the fine powder settles slowly under low gravity, achieving fine sieving. It can be used to finely sieve rock particle powder in low gravity environments such as the moon and Mars.

[0031] In some embodiments, the flange 207 is provided with an annular groove 208 surrounding the frustum 206 near the rear end of the frustum 206. The annular groove 208 is disposed between the flange 207 and the frustum 206, reducing the thickness at the connection between the two. The edge of the flange 207 remains stationary, so that vibration is transmitted to the frustum 206, causing the frustum 206 to vibrate more noticeably.

[0032] To address the issue of fixing the flange 207, multiple fixing holes 209 are provided along the edge of the flange 207. These fixing holes 209 are used to fix the flange 207. The fixing holes 209 are evenly spaced around the edge of the flange 207, and the flange 207 is fixedly connected to external equipment by using bolts or other fasteners installed in the fixing holes 209.

[0033] In some embodiments, the inner edge of the upper port of the sieve frame 101 is provided with an arc-shaped chamfer 105, which makes the upper port of the sieve frame 101 form an enlarged opening, so as to facilitate the entry of the granular powder to be sieved.

[0034] In this document, the directional terms such as front, back, top, and bottom are defined based on the position of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that these are relative concepts and can vary depending on different methods of use and placement; the use of these directional terms should not limit the scope of protection claimed in this application.

[0035] Where there is no conflict, the embodiments and features described above can be combined with each other. The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for ultrasonic sieving of rock particle powders in low gravity environments of a star catalogue, characterized by, include: An ultrasonic transducer includes a rear end cover, a piezoelectric ceramic, and an amplitude transformer. The amplitude transformer includes a frustum and a flange. The rear end of the frustum is fixedly connected to the middle of the flange. The diameter of the frustum gradually decreases from back to front. The rear end of the piezoelectric ceramic is fixedly connected to the rear end cover, and the front end is fixedly connected to the flange. The edge of the flange is used to fix the transducer in place. The screen includes a screen frame and a screen plate disposed within the screen frame. The screen is disposed along the length of the frustum. The screen frame is fixedly connected to the front end of the amplitude transformer.

2. The device for ultrasonic sieving of rock particle powder in a low gravity environment of a star catalog according to claim 1, characterized in that: The flange has an annular groove surrounding the truncated cone near the rear end of the cone.

3. The device for ultrasonic sieving of rock particle powders in low gravity environment of a star catalog according to claim 1 or 2, characterized in that: The flange has multiple fixing holes on its edge, which are used to fix the flange.

4. The device for ultrasonic sieving of rock particle powders in low gravity environment of a star catalog according to claim 1, characterized in that: The inner edge of the upper port of the sieve frame is provided with an arc-shaped chamfer.

5. The device for ultrasonic sieving of rock particle powders in low gravity environment of a star catalog according to claim 1, characterized in that: The sieve frame is a circular frame, and the sieve frame is bisected by the axis of the frustum.

6. The device for ultrasonic sieving of rock particle powders in low gravity environment of a star catalog according to claim 1, characterized in that: The sieve frame is detachably connected to the front end of the truncated cone.

7. The apparatus for ultrasonic sieving of rock particle powders in low gravity environment of a star catalog according to claim 6, characterized in that: The rear side of the screen frame is provided with an installation plane, the installation plane is provided with an installation hole, and the front end of the frustum is provided with a positioning post, the positioning post is inserted into the installation hole and threadedly connected to the installation hole.

8. The apparatus for ultrasonic sieving of rock particle powders in low gravity environment of a star catalog according to claim 1, characterized in that: The ultrasonic transducer also includes a fastening bolt, which is installed at the rear of the rear end cover, passes through the piezoelectric ceramic, and is connected to the flange.

9. The apparatus for ultrasonic sieving of rock particle powders in low gravity environment of a star catalog according to claim 8, characterized in that: The rear end of the rear end cover is provided with a countersunk hole, and the fastening bolt is an internal hex bolt, with the head of the fastening bolt recessed into the countersunk hole.

10. The apparatus for ultrasonic sieving of rock particle powders in low gravity environment of a star catalog according to claim 1, characterized in that: The frustum has clamping jaws on both opposite sides.

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