Detachable standard sieve

Abstract

The utility model belongs to the technical field of laboratory sieves, and relates to a detachable standard sieve which comprises an inner ring body and an outer ring body. An outer connecting thread is arranged on the outer wall of the inner ring body, a screen is detachably connected to the inner wall of the inner ring body, and the screen is used for screening materials; the outer ring body is arranged on the periphery of the inner ring body in a sleeving mode, and inner connecting threads matched with the outer connecting threads are arranged on the inner wall of the outer ring body. The outer connecting threads are arranged on the outer wall of the inner ring body, the inner connecting threads matched with the outer connecting threads are arranged on the inner wall of the outer ring body, detachable connection of the inner ring body and the outer ring body is achieved in a threaded connection mode, when the screen mesh is damaged, an operator does not need to replace the whole standard screen, only the inner ring body with the screen mesh needs to be detached, and therefore the screen mesh can be replaced conveniently. The inner ring body can be replaced by a new inner ring body, the experiment cost is greatly saved, meanwhile, the screen cloth is arranged to be detachable, operators can conveniently and flexibly select screen cloth with screen holes of different diameters according to experiment requirements, and the applicability of the standard screen is improved.

Description

Technical Field

[0001] This utility model relates to the field of laboratory sieve technology, specifically to a detachable standard sieve. Background Technology

[0002] With the continuous improvement of my country's economic development and highway transportation demands, road testing is being conducted more frequently and in greater depth. In road testing, the standard sieve is one of the important tools for screening asphalt mixtures or concrete particles. Its main function is to separate particles of different sizes for subsequent experiments or engineering applications.

[0003] Existing technologies have conducted some research on the structure of standard sieves. See patent application number 201420374111.4, which discloses a novel transparent standard sieve. In practical operation, the standard sieve is first selected according to the experimental requirements, then arranged and connected in descending order of aperture size, with the bottom sieve connected to the sieve bottom. The weighed soil sample is slowly poured into the top sieve, and the sieve cover is closed. The entire set of standard sieves is shaken left and right to ensure thorough sieving of soil particles. The sieves are separated layer by layer from top to bottom, and the remaining soil particles are poured out and weighed, with the aperture size and mass of the soil particles in each layer recorded. Finally, the soil particles at the bottom of the sieve are poured out, weighed, and recorded. After all sieves and the soil particles at the bottom of the sieves have been weighed and recorded, all parts of the standard sieve are cleaned and wiped dry, and then arranged neatly in order.

[0004] Therefore, this new type of transparent standard sieve improves the visualization of the sieving process. However, in practical applications, the sieve mesh is easily worn down by the sieving particles. Once the mesh is damaged, the entire standard sieve needs to be replaced, which greatly increases the experimental cost. Utility Model Content

[0005] To address the technical problem in the background art where the entire standard sieve needs to be replaced after the sieve is damaged, thus increasing experimental costs, this utility model provides a detachable standard sieve.

[0006] This utility model relates to a detachable standard sieve. The outer wall of the inner ring is provided with an external connecting thread, and the inner wall of the outer ring is provided with an internal connecting thread that matches the external connecting thread. The inner and outer rings are detachably connected through the threaded connection. When the sieve is damaged, the operator does not need to replace the entire standard sieve. They only need to remove the inner ring with the sieve and replace it with a new one, which greatly saves experimental costs. At the same time, the detachable sieve allows the operator to flexibly select sieves with different diameter holes according to experimental needs, improving the applicability of the standard sieve.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0008] A detachable standard sieve includes an inner ring body and an outer ring body; the outer wall of the inner ring body is provided with an external connecting thread, and a screen is detachably connected to the inner wall of the inner ring body for screening materials; the outer ring body is sleeved on the outer circumference of the inner ring body, and the inner wall of the outer ring body is provided with an internal connecting thread that matches the external connecting thread.

[0009] In one specific implementation, the bottom of the outer ring body is provided with a support, which is connected to the inner wall of the outer ring body and extends to the center of the outer ring body.

[0010] In one specific implementation, the cross-section of the support is annular.

[0011] In one specific implementation, the outer ring body includes a connecting ring portion, a connector, and a support ring portion; the connecting ring portion is sleeved on the outer periphery of the inner ring body, and the inner wall of the connecting ring portion is provided with an internal connecting thread; the support ring portion is located on the outer periphery of the connecting ring portion, and a noise reduction cavity is formed between the support ring portion and the connecting ring portion; one end of the connector is connected to the outer wall of the connecting ring portion, and the other end is connected to the inner wall of the support ring portion.

[0012] In one specific implementation, the connector is provided in multiple sets, and the multiple sets of connectors are evenly distributed along the circumference of the connecting ring.

[0013] In one specific implementation, the noise reduction cavity is filled with noise reduction foam.

[0014] In one specific implementation, the noise-reducing foam is polyurethane foam.

[0015] In one specific implementation, the height of the inner ring is 1 / 3 to 2 / 3 of the height of the connecting ring.

[0016] In one specific implementation, the detachable standard sieve further includes a locking assembly; the locking assembly includes an upper protrusion, a lower protrusion, and an elastic fastener; the upper protrusion is connected to the outer wall of the support ring near its upper end; the lower protrusion is connected to the outer wall of the support ring near its lower end; the elastic fastener is connected to the outer wall of the support ring, and one end of the elastic fastener is engaged with the upper protrusion, and the other end is engaged with the lower protrusion of the adjacent standard sieve.

[0017] In one specific implementation, the locking components are provided in multiple sets, and the multiple sets of locking components are evenly distributed along the circumference of the support ring.

[0018] In summary, this utility model has the following beneficial technical effects:

[0019] 1. This utility model relates to a detachable standard sieve. The outer wall of the inner ring body is provided with an external connecting thread, and the inner wall of the outer ring body is provided with an internal connecting thread that matches the external connecting thread. The inner and outer ring bodies are detachably connected through the threaded connection. When the sieve is damaged, the operator does not need to replace the entire standard sieve. They only need to remove the inner ring body with the sieve and replace it with a new one, which greatly saves experimental costs. At the same time, the detachable sieve design allows the operator to flexibly select sieves with different diameter holes according to experimental needs, improving the applicability of the standard sieve.

[0020] 2. The detachable standard sieve of this utility model has a support extending from the bottom of the outer ring body to the center of the outer ring body. When the outer connecting thread and the inner connecting thread are screwed together, the support prevents the inner ring body from continuing to rotate and descend along the texture of the inner connecting thread, thereby ensuring a stable connection between the inner ring body and the outer ring body and avoiding the problem of the inner ring body loosening or falling off during the screening process.

[0021] 3. This utility model features a detachable standard sieve with a noise-reducing cavity formed between the support ring and the connecting ring, facilitating the reduction of vibration noise generated during material screening. Preferably, the noise-reducing cavity is filled with noise-reducing foam, which absorbs the vibration noise generated by the collision between the material and the inner ring, further enhancing the noise reduction effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the detachable standard sieve of this utility model.

[0023] Figure 2 This is a partial structural diagram of the detachable standard sieve of this utility model, intended to illustrate the inner ring body.

[0024] Figure 3 This is a partial structural diagram of the detachable standard sieve of this utility model, intended to illustrate the outer ring body.

[0025] Figure 4 This is a partial cross-sectional view of the detachable standard sieve of this utility model, intended to illustrate the connecting ring.

[0026] Figure 5 This is a schematic diagram of the use of the detachable standard sieve of this utility model, intended to illustrate the overall structure composed of multiple detachable standard sieves.

[0027] Explanation of reference numerals in the attached drawings: 1. Inner ring body; 11. Outer connecting thread; 12. Screen; 2. Outer ring body; 21. Base support; 22. Connecting ring; 23. Connecting piece; 24. Supporting ring; 25. Noise reduction cavity; 26. Inner connecting thread; 3. Locking assembly; 31. Upper protrusion; 32. Lower protrusion; 33. Elastic fastener. Detailed Implementation

[0028] The technical solution of this utility model will be further explained and described below with reference to the accompanying drawings and embodiments, but this utility model is not limited to the embodiments described below.

[0029] In road testing, standard sieves are essential tools for sieving asphalt mixtures or concrete particles. Their main function is to separate particles of different sizes for subsequent experiments or engineering applications. In practical use, sieving particles easily wears down the sieve mesh 12. However, conventional standard sieves have the mesh 12 integrated with other structures; once the mesh 12 is damaged, the entire standard sieve needs to be replaced, significantly increasing experimental costs. This invention aims to provide a detachable standard sieve. The outer wall of the inner ring 1 is provided with an external connecting thread 11, and the inner wall of the outer ring 2 is provided with an internal connecting thread 26 that matches the external connecting thread 11. The inner ring 1 and outer ring 2 are detachably connected via this threaded connection. When the mesh 12 is damaged, operators do not need to replace the entire standard sieve; they only need to remove the inner ring 1 with the mesh 12 and replace it with a new one, greatly saving experimental costs.

[0030] Example 1:

[0031] Reference Figures 1-3 A detachable standard sieve includes an inner ring body 1 and an outer ring body 2. The outer wall of the inner ring body 1 is provided with an external connecting thread 11, and a sieve mesh 12 is connected to the inner wall of the inner ring body 1. The sieve mesh 12 is used for sieving materials, and the diameter of the sieve mesh 12 can be flexibly selected according to experimental requirements. The outer ring body 2 is sleeved on the outer circumference of the inner ring body 1, and the inner wall of the outer ring body 2 is provided with an internal connecting thread 26 that matches the external connecting thread 11. The inner ring body 1 and the outer ring body 2 are detachably connected through the threaded connection, and the disassembly process requires no additional tools, making operation convenient.

[0032] Reference Figure 1 , Figure 3 and Figure 4 The bottom of the outer ring body 2 is provided with a support 21, which is connected to the inner wall of the outer ring body 2 and extends to the center of the outer ring body 2.

[0033] In this embodiment, by providing a support 21 extending towards the center of the outer ring 2 at the bottom of the outer ring 2, when the inner ring 1 is screwed into the inner connecting thread 26 on the inner wall of the outer ring 2 via the outer connecting thread 11, the support 21 prevents the inner ring 1 from continuing to rotate and descend along the texture of the inner connecting thread 26, thereby ensuring a stable connection between the inner ring 1 and the outer ring 2 and avoiding the problem of the inner ring 1 loosening or falling off during the screening process.

[0034] Reference Figure 1 and Figure 3The outer ring body 2 includes a connecting ring portion 22, a connector 23, and a support ring portion 24. The connecting ring portion 22 is sleeved on the outer periphery of the inner ring body 1, and the inner wall of the connecting ring portion 22 is provided with an internal connecting thread 26 for easy connection with the inner ring body 1; the support ring portion 24 is located on the outer periphery of the connecting ring portion 22, and a noise reduction cavity 25 is formed between the support ring portion 24 and the connecting ring portion 22 to reduce vibration noise generated during material screening; one end of the connector 23 is connected to the outer wall of the connecting ring portion 22, and the other end is connected to the inner wall of the support ring portion 24, so as to achieve a stable connection between the connecting ring portion 22 and the support ring portion 24.

[0035] Specifically, the inner ring 1, the connecting ring 22, and the supporting ring 24 are all made of metal.

[0036] Example 2:

[0037] Reference Figure 3 and Figure 4 In this embodiment, the detachable standard sieve, based on embodiment 1, has an annular cross-section for the bottom support 21.

[0038] In this embodiment, the cross-section of the bottom support 21 is annular, and the shape of the annular bottom support 21 matches the inner wall of the outer ring body 2, which facilitates the formation of annular blocking at the end of the internal connecting thread 26, further ensuring a stable connection between the screen 12 and the outer ring body 2.

[0039] Example 3:

[0040] Reference Figure 1 and Figure 3 In this embodiment of the detachable standard sieve, based on embodiment 1, multiple sets of connectors 23 are provided, and the multiple sets of connectors 23 are evenly distributed along the circumference of the connecting ring 22.

[0041] Specifically, the connectors 23 can be configured in two, three, or four groups. By configuring the connectors 23, a stable connection between the connecting ring 22 and the supporting ring 24 can be achieved. All of these configuration methods are acceptable. Preferably, the connectors 23 are configured in four groups, with the four groups of connectors 23 evenly distributed along the circumference of the connecting ring 22.

[0042] In this embodiment, multiple sets of connectors 23 are evenly distributed around the circumference of the connecting ring portion 22 to enhance the structural stability of the outer ring body 2, while ensuring the uniform distribution of the noise reduction cavity 25 and improving the noise reduction effect.

[0043] Example 4:

[0044] Reference Figure 3 In this embodiment, the detachable standard sieve, based on embodiment 1, has noise reduction cavity 25 filled with noise reduction foam.

[0045] Specifically, the noise-reducing foam can be polyurethane foam, polyethylene foam, rubber foam, etc. Using a suitable noise-reducing foam absorbs the vibration noise generated by the collision between the material and the inner ring 1. Any of these methods are acceptable. Preferably, the noise-reducing foam is polyurethane foam.

[0046] In this embodiment, the noise reduction cavity 25 is filled with noise reduction foam. During the use of the standard sieve, the noise reduction foam absorbs the vibration noise generated by the collision between the material and the inner ring 1, thereby improving the noise reduction effect.

[0047] Example 5:

[0048] Reference Figure 1 and Figure 3 In this embodiment of the detachable standard sieve, based on embodiment 1, the height of the inner ring 1 is 1 / 3 to 2 / 3 of the height of the connecting ring 22.

[0049] In this embodiment, the height of the inner ring 1 can be 1 / 3, 1 / 2, or 2 / 3 of the height of the connecting ring 22. Setting a suitable height for the inner ring 1 reduces its weight and further lowers its cost; any of these settings are acceptable. Preferably, the height of the inner ring 1 is 1 / 3 of the height of the connecting ring 22.

[0050] Example 6:

[0051] Reference Figure 1 and Figure 5 This embodiment of the detachable standard sieve, based on embodiment 1, further includes a locking assembly 3. The locking assembly 3 includes an upper protrusion 31, a lower protrusion 32, and an elastic fastener 33. The upper protrusion 31 is connected to the outer wall of the support ring portion 24 near its upper end; the lower protrusion 32 is connected to the outer wall of the support ring portion 24 near its lower end; the elastic fastener 33 is connected to the outer wall of the support ring portion 24, and one end of the elastic fastener 33 is engaged with the upper protrusion 31, while the other end is engaged with the lower protrusion 32 of the adjacent standard sieve.

[0052] Specifically, the elastic fastener 33 can be a spring buckle, an elastic clip, etc. By setting the elastic fastener 33, multiple standard screens can be easily combined and disassembled. Any of these setting methods are acceptable.

[0053] In this embodiment, by setting the locking component 3, it is convenient to securely connect and disassemble multiple standard sieves, and to facilitate the transportation and storage of multiple standard sieves.

[0054] Example 7:

[0055] Reference Figure 1 and Figure 5In this embodiment, the detachable standard sieve, based on embodiment 6, has multiple sets of locking components 3, which are evenly distributed along the circumference of the support ring 24.

[0056] In this embodiment, multiple sets of locking components 3 are evenly distributed along the circumference of the support ring 24 to improve the connection stability between multiple standard sieves, thereby preventing the standard sieves from shaking or shifting during transportation.

[0057] The working principle of this detachable standard sieve is as follows: Based on experimental requirements, a sieve 12 with the required sieve aperture diameter is selected. The inner ring 1 and outer ring 2 containing the sieve 12 are connected by an external connecting thread 11 and an internal connecting thread 26, enabling rapid installation of the sieve 12. During the sieving process, materials are sieved through the sieve 12. The noise-reducing foam in the noise-reducing cavity 25 effectively absorbs and isolates vibration noise, reducing experimental noise. Multiple standard sieves can be quickly connected and disassembled using the locking assembly 3, facilitating adjustment of the number of standard sieves according to experimental needs. When particles wear down the sieve 12, causing it to be damaged, the operator can simply unscrew the sieve 12 from the inner ring 1 and replace it with a new one.

[0058] The preferred embodiments of this utility model are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A detachable standard sieve, comprising: Inner ring (1) and outer ring (2); The outer wall of the inner ring body (1) is provided with an external connecting thread (11), and the inner wall of the inner ring body (1) is connected with a screen (12), which is used to screen materials. The outer ring (2) is fitted around the outer periphery of the inner ring (1), and the inner wall of the outer ring (2) is provided with an inner connecting thread (26) that matches the outer connecting thread (11); the bottom of the outer ring (2) is provided with a support (21), the support (21) is connected to the inner wall of the outer ring (2) and extends toward the center of the outer ring (2); the cross-section of the support (21) is annular; The outer ring (2) includes a connecting ring (22), a connector (23), and a support ring (24). The connecting ring (22) is sleeved on the outer periphery of the inner ring (1), and the inner wall of the connecting ring (22) is provided with an internal connecting thread (26). The support ring (24) is located on the outer periphery of the connecting ring (22), and a noise reduction cavity (25) is formed between the support ring (24) and the connecting ring (22). The connector (23) is connected at one end to the outer wall of the connecting ring (22) and at the other end to the inner wall of the support ring (24); The noise reduction cavity (25) is filled with noise reduction foam.

2. The detachable standard sieve according to claim 1, characterized in that: The connector (23) is provided in multiple sets, and the multiple sets of connectors (23) are evenly distributed along the circumference of the connecting ring (22).

3. The detachable standard sieve according to claim 1, characterized in that: The noise-reducing foam is polyurethane foam.

4. The detachable standard sieve according to claim 1, characterized in that: The height of the inner ring (1) is 1 / 3 to 2 / 3 of the height of the connecting ring (22).

5. The detachable standard sieve according to any one of claims 1-4, characterized in that: The detachable standard sieve also includes a locking assembly (3); the locking assembly (3) includes an upper protrusion (31), a lower protrusion (32), and an elastic fastener (33); The upper protrusion (31) is connected to the outer wall of the support ring portion (24) near the upper end; The lower protrusion (32) is connected to the outer wall of the support ring portion (24) near the lower end; The elastic fastener (33) is connected to the outer wall of the support ring (24), and one end of the elastic fastener (33) is engaged with the upper protrusion (31), and the other end is engaged with the lower protrusion (32) of the adjacent standard sieve.

6. The detachable standard sieve according to claim 5, characterized in that: The locking components (3) are provided in multiple sets, and the multiple sets of locking components (3) are evenly distributed along the circumference of the support ring (24).

Images