Specimen crushing device

Abstract

This application relates to the technical field of sample crushing, and provides a sample crushing device, including: an installation frame, including a top plate, a bottom plate and side plates. A through hole is formed in the middle of the bottom plate, and a steel ring is placed on the bottom plate at the through hole, and the through hole is used for the crushed sample to fall through; a crushing mechanism is arranged inside the installation frame and is located directly above the through hole. The crushing mechanism includes a push rod and a crushing part. The push rod is arranged vertically, and the crushing part is arranged at the bottom end of the push rod; a driving mechanism, including a driving part and a driving rod. The driving part is arranged on the top plate. One end of the driving rod is connected to the driving part, and the other end passes through the top plate and is connected to the top end of the push rod. In this application, by arranging a crushing mechanism and a driving mechanism above the steel ring sample, the driving part drives the driving rod to move in the vertical direction, and then the driving rod drives the push rod connected thereto to move in the vertical direction, so as to crush the sample located directly below the push rod through the crusher. The structure is simple and does not require manual operation.

Description

Technical Field

[0001] The invention relates to the technical field of sample crushing, and in particular to a sample crushing device. Background Art

[0002] When doing cement tests, for example, the sample is pressed out through a grinding and tabletting machine to form a steel ring sample. After the sample data is tested by a fluorescence instrument, when the steel ring is recycled for reuse, the sample inside the steel ring must be broken up to facilitate next use.

[0003] The current sample destruction technology is to manually break the sample in the steel ring with a hammer, and then use sandpaper to clean the inner ring of the steel ring, so as to achieve the secondary recycling of the steel ring. However, this operation process increases manual labor, and improper operation may easily cause work-related injuries by hitting the hands. After the steel ring is broken, dust is easily generated, which is adverse to the health of the operator. Summary of the invention

[0004] The present invention provides a sample crushing device, which is used to solve the defects of the prior art that manually crushing the sample in the steel ring with a hammer increases manual labor and is easy to cause injuries to hands due to improper operation, and realizes automatic crushing of the sample in the steel ring.

[0005] The present invention provides a sample crushing device, which is used for crushing a sample placed in a steel ring, comprising:

[0006] The mounting frame comprises a top plate, a bottom plate and side plates, wherein a through hole is configured in the middle of the bottom plate, the steel ring is placed on the bottom plate at the through hole, and the through hole is used for the crushed sample to fall into;

[0007] A crushing mechanism is arranged in the installation frame and is located directly above the through hole, the crushing mechanism comprises a push rod and a crushing part, the push rod is arranged vertically, and the crushing part is arranged at the bottom end of the push rod;

[0008] The driving mechanism comprises a driving part and a driving rod, wherein the driving part is arranged on the top plate, one end of the driving rod is connected to the driving part, and the other end passes through the top plate and is connected to the top end of the push rod.

[0009] According to an embodiment provided by the present invention, the crushing part comprises:

[0010] A crushing body is fixedly connected to the bottom end of the push rod, and the crushing body is provided with a plurality of crushing hammer heads on a side away from the push rod;

[0011] At least one pre-breaking component is fixedly connected to the crushing body and is arranged between the plurality of crushing hammer heads. The height of the pre-breaking component is greater than the height of the crushing hammer heads.

[0012] According to an embodiment provided by the present invention, the crushing body is columnar and coaxially arranged with the push rod. The diameter of the crushing body is larger than that of the push rod, and the diameter of the crushing body is the same as the inner diameter of the steel ring.

[0013] According to an embodiment provided by the present invention, it further includes:

[0014] A fixed sleeve, which is arranged below the top plate and coaxially arranged with the push rod. The lower end face of the fixed sleeve is at a preset distance from the bottom plate;

[0015] A touch pressure sleeve, which is arranged between the push rod and the fixed sleeve. The touch pressure sleeve is suitably sleeved on the push rod and the crushing body, and the inner side wall of the touch pressure sleeve is stepped. The height of the touch pressure sleeve is greater than the preset distance and less than the height of the fixed sleeve.

[0016] According to an embodiment provided by the present invention, it further includes:

[0017] An elastic member, which is sleeved on the push rod between the bottom end of the driving rod and the upper end face of the touch pressure sleeve, and the elastic member is in a compressed state.

[0018] According to an embodiment provided by the present invention, a plurality of installation grooves are formed in the circumferential direction on the lower end face of the touch pressure sleeve, and elastic limiting members are adaptively installed in the installation grooves. The elastic limiting members are used to abut against the steel ring.

[0019] According to an embodiment provided by the present invention, it further includes:

[0020] An annular dust removal cover, which is sleeved on the fixed sleeve, and the height of the annular dust removal cover is greater than the preset distance;

[0021] A driving assembly, which is arranged on the side plate and connected to the annular dust removal cover, and is used to drive the annular dust removal cover to move in the vertical direction;

[0022] A negative pressure pipeline, which is communicated with the side wall of the annular dust removal cover.

[0023] According to an embodiment provided by the present invention, a dust-proof ring that closely adheres to the fixed sleeve is provided on the upper side of the annular dust removal cover, and a silica gel pad is provided on the lower bottom surface of the annular dust removal cover. The silica gel pad is used to contact the bottom plate.

[0024] According to an embodiment provided by the present invention, it further includes:

[0025] An air inlet interface, which is arranged above the side wall of the fixed sleeve and communicated with the side wall of the fixed sleeve, so that air flow can enter the fixed sleeve through the air inlet interface.

[0026] According to an embodiment provided by the present invention, a plurality of air holes are circumferentially formed in the pressing sleeve, and the plurality of air holes are used to communicate the air inlet interface and the negative pressure pipeline.

[0027] The sample crushing device provided by the present invention is provided with a crushing mechanism and a driving mechanism above the steel ring sample. The driving part in the driving mechanism drives the driving rod to move in the vertical direction, and then the driving rod drives the push rod connected thereto to move in the vertical direction, so as to crush the sample located directly below the push rod through the crusher. The structure is simple, and it does not require manual operation, effectively avoiding the situation of easy injury caused by manual crushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 is a schematic cross-sectional structure diagram of the sample crushing device provided by the present invention;

[0030] Figure 2 is a schematic structure diagram of the crushing part provided by the present invention;

[0031] Figure 3 is a schematic cross-sectional structure diagram of the sample crushing device in the uncrushed state provided by the present invention;

[0032] Figure 4 is a schematic cross-sectional structure diagram of the sample crushing device in the crushed state provided by the present invention;

[0033] Figure 5 is a schematic cross-sectional structure diagram of the pressing sleeve provided by the present invention;

[0034] Figure 6 is a schematic top view structure diagram of the pressing sleeve provided by the present invention.

[0035] Reference numerals:

[0036] 100, mounting frame; 101, top plate; 102, bottom plate; 103, side plate; 1021, through hole;

[0037] 200, crushing mechanism; 201, push rod; 202, crushing part; 2021, crushing body; 2022, crushing hammer head; 2023, pre-breaking part;

[0038] 300, driving mechanism; 301, driving part; 302, driving rod;

[0039] 400, steel ring;

[0040] 501, fixed sleeve; 502, pressing sleeve; 5021, mounting groove; 5022, air hole;

[0041] 601, elastic member;

[0042] 701, annular dust removal cover; 7011, dust-proof ring; 702, drive assembly; 703, negative pressure pipeline;

[0043] 801, air inlet interface. Specific embodiments

[0044] The following further describes in detail the embodiments of the present application in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0045] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0046] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0047] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0048] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0049] This exemplary embodiment provides a specimen crushing device for crushing a specimen placed in a steel ring 400. As Figure 1 shown, the specimen crushing device includes a mounting frame 100, a crushing mechanism 200, and a driving mechanism 300.

[0050] The mounting frame 100 includes a top plate 101, a bottom plate 102, and side plates 103. A through hole 1021 is formed in the middle of the bottom plate 102. The steel ring 400 is placed on the bottom plate 102 at the through hole 1021. The through hole 1021 is for the crushed specimen to fall into. The crushing mechanism 200 is disposed within the mounting frame 100 and is located directly above the through hole 1021. The crushing mechanism 200 includes a push rod 201 and a crushing part 202. The push rod 201 is arranged vertically, and the crushing part 202 is disposed at the bottom end of the push rod 201. The driving mechanism 300 includes a driving part 301 and a driving rod 302. The driving part 301 is disposed on the top plate 101. One end of the driving rod 302 is connected to the driving part 301, and the other end passes through the top plate 101 and is connected to the top end of the push rod 201.

[0051] Specifically, the push rod 201 in the crushing mechanism 200 is connected to the driving rod 302 in the driving mechanism 300. The driving part 301 can drive the driving rod 302 to perform reciprocating motion in the vertical direction, that is, the driving part 301 can drive the push rod 201 to perform reciprocating motion in the vertical direction. Before crushing the specimen, the driving part 301 drives the crushing mechanism 200 to rise to the highest position, so that there is a certain distance between the crushing part 202 and the bottom plate 102 where the steel ring 400 is about to be placed, so as to facilitate the manipulator or manual placement of the steel ring 400.

[0052] The through hole 1021 in the middle structure of the bottom plate 102 can be a tapered through hole 1021 with a smaller upper end and a larger lower end, but there is no limitation. The setting of the tapered through hole 1021 can facilitate the crushing mechanism 200 to continue to move downward after crushing the sample. It can be understood that the space below the tapered through hole 1021 is large, providing space for the crushing mechanism 200 to continue to move downward. In addition, a larger hole can also be opened on the bottom plate 102, a sample holder is placed in the hole, the above-mentioned through hole 1021 is formed in the middle of the sample holder, and the upper surface of the sample holder is set in a stepped shape to facilitate the placement of the steel ring 400 and effectively ensure that the steel ring 400 does not shift during the crushing of the sample. A collection box can be arranged below the sample holder to collect the crushed sample residue.

[0053] It should be noted that the driving part 301 in this example can be a cylinder, a motor, etc., and there is no limitation here.

[0054] In this embodiment, by arranging the crushing mechanism 200 and the driving mechanism 300 above the sample with the steel ring 400, the driving part 301 in the driving mechanism 300 drives the driving rod 302 to move in the vertical direction, and then the driving rod 302 drives the push rod 201 connected thereto to move in the vertical direction, so as to crush the sample located directly below the push rod 201 through the crusher. The structure is simple, does not require manual operation, and effectively avoids the occurrence of injuries easily caused by manual crushing.

[0055] Next, reference will be made to Figures 1 to 6 to describe each part structure of the above-mentioned sample crushing device in the embodiment of this example in more detail.

[0056] As Figure 2 shown, in one embodiment, the crushing part 202 includes a crushing body 2021 and at least one pre-crushing part 2023. The crushing body 2021 is fixedly connected to the bottom end of the push rod 201, and a plurality of crushing hammers 2022 are arranged on the side of the crushing body 2021 facing away from the push rod 201; at least one pre-crushing part 2023 is fixedly connected to the crushing body 2021 and is arranged between the plurality of crushing hammers 2022, and the height of the pre-crushing part 2023 is greater than the height of the crushing hammers 2022.

[0057] It should be understood that the crushing hammers 2022 are arranged on the crushing body 2021 in a frustum shape. The number of crushing hammers 2022 can be two symmetrically arranged or four evenly distributed. The crushing hammers 2022 can be integrally formed with the crushing body 2021 or fixed to the crushing body 2021 by bolts, and there is no limitation here.

[0058] The pre-breaking part 2023 needs to protrude more than the crushing hammer head 2022 to play the role of pre-breaking. Specifically, the pre-breaking part 2023 is a pin, and two pins are set. They are screwed into the installation holes reserved in the crushing body 2021 through the threads provided at the ends. The pre-breaking part 2023 protrudes 3 mm from the lower end face of the crushing hammer head 2022. When crushing the steel ring 400 sample, the pre-breaking part 2023 contacts the sample first. Since the surface area of the pre-breaking part 2023 is small, the internal force of the sample can be destroyed, and then the sample is crushed by the subsequent crushing hammer head 2022, so as to achieve the crushing effect of the sample.

[0059] As Figure 2 , 3 shown, in one example, the crushing body 2021 is columnar and is coaxially arranged with the push rod 201. The diameter of the crushing body 2021 is larger than the diameter of the push rod 201, and the diameter of the crushing body 2021 is the same as the inner diameter of the steel ring 400.

[0060] As Figure 4 shown, it can be understood that after the crushing hammer head 2022 crushes the sample, there will still be some sample residues remaining on the inner wall of the steel ring 400. At this time, the push rod 201 can drive the crushing body 2021 to continue to move downward. Since the crushing body 2021 is columnar and has the same diameter as the inner diameter of the steel ring 400, the sample residues on the inner wall of the steel ring 400 can be further removed by the crushing body 2021.

[0061] As Figure 3 and Figure 4 shown, the sample crushing device provided in this embodiment further includes: a fixed sleeve 501 and a touch pressure sleeve 502. The fixed sleeve 501 is arranged below the top plate 101 and is coaxially arranged with the push rod 201. The lower end face of the fixed sleeve 501 is at a preset distance from the bottom plate 102; the touch pressure sleeve 502 is arranged between the push rod 201 and the fixed sleeve 501. The touch pressure sleeve 502 is properly sleeved on the push rod 201 and the crushing body 2021, and the inner side wall of the touch pressure sleeve 502 is stepped. The height of the touch pressure sleeve 502 is greater than the preset distance and less than the height of the fixed sleeve 501.

[0062] It can be understood that the diameter of the crushing body 2021 is larger than that of the push rod 201. Therefore, the connection between the crushing body 2021 and the push rod 201 is stepped, and the inner wall of the pressure contact sleeve 502 sleeved outside the push rod 201 and the crushing body 2021 is also stepped. It can be further understood that in the state of not crushing the sample, the protruding part of the crushing body 2021 will catch the pressure contact sleeve 502 to prevent the pressure contact sleeve 502 from moving downward; but in the state of crushing the sample, the pressure contact sleeve 502 initially moves downward with the crushing body 2021. When the pressure contact sleeve 502 first contacts the steel ring 400 on the bottom plate 102 and stops moving downward, the push rod 201 in the pressure contact sleeve 502 continues to drive the crushing body 2021 to move downward to crush the sample, thus forming a relative movement state between the push rod 201, the crushing body 2021 and the pressure contact sleeve 502. When the crushing action is completed, the push rod 201 drives the crushing body 2021 to move upward a certain distance first. When the protruding part of the crushing body 2021 touches the step in the pressure contact sleeve 502, it will drive the pressure contact sleeve 502 to move upward together.

[0063] In this example, the pressure contact sleeve 502 provided can, on the one hand, resist the steel ring 400 to prevent the steel ring 400 from moving when the crushing part 202 crushes the sample; on the other hand, the pressure contact sleeve 502 is arranged in the fixed sleeve 501, which can play a guiding role for the push rod 201 to prevent the push rod 201 from shifting and reducing the crushing effect on the sample in the steel ring 400.

[0064] It should be noted that a copper sleeve can be arranged between the pressure contact sleeve 502 and the fixed sleeve 501 to further enhance the guiding effect of the pressure contact sleeve 502. The distance between the lower end face of the fixed sleeve 501 and the bottom plate 102 can be set according to the actual situation, but it is necessary to ensure that the placement of the steel ring 400 by the manipulator or human hand is not affected by the upper crushing mechanism 200. The height of the pressure contact sleeve 502 can be set to half of the height of the fixed sleeve 501, but the height of the pressure contact sleeve 502 needs to be greater than the height of the preset distance to maintain a continuous guiding effect.

[0065] As Figure 3 and Figure 4 shown, the sample crushing device provided in this embodiment further includes an elastic member 601 sleeved on the push rod 201 between the bottom end of the driving rod 302 and the upper end face of the pressure contact sleeve 502, and the elastic member 601 is in a compressed state.

[0066] In this example, the elastic member 601 can be a spring. A push plate can be provided at the bottom end of the driving rod 302, i.e., the position connected to the push rod 201. The spring is sleeved on the push rod 201, and the upper and lower ends of the spring can be respectively connected to the lower part of the push plate and the upper part of the touch pressure sleeve 502. Since one of the functions of the touch pressure sleeve 502 is to press against the steel ring 400, the spring provided above the touch pressure sleeve 502 needs to be in a compressed state. When the touch pressure sleeve 502 moves downward along with the push rod 201 and reaches the bottom plate 102 position, the spring gives a downward thrust to the touch pressure sleeve 502, thereby realizing the secondary positioning of the steel ring 400.

[0067] As Figure 5 and Figure 6 shown, in one embodiment, a plurality of mounting grooves 5021 are circumferentially formed on the lower end surface of the touch pressure sleeve 502, and elastic limit members are adaptively mounted in the mounting grooves 5021 for abutting against the steel ring 400.

[0068] In practical applications, the touch pressure sleeve 502 presses against the steel ring 400. After the specimen is broken, when the touch pressure sleeve 502 moves upward, it will lift the steel ring 400, which affects the subsequent removal of the steel ring 400 by the manipulator. The elastic limit members provided on the bottom surface of the touch pressure sleeve 502 can be spring beads in this example. They can not only play the role of pressing against the steel ring 400 to achieve positioning, but also have a small contact area with the steel ring 400 and are not easy to take away the steel ring 400.

[0069] As Figure 1 、 Figure 3 and Figure 4 shown, the specimen crushing device provided in this embodiment further includes: an annular dust removal cover 701, a driving assembly 702, and a negative pressure pipeline 703. The annular dust removal cover 701 is sleeved on the fixed sleeve 501, and the height of the annular dust removal cover 701 is greater than the preset distance; the driving assembly 702 is arranged on the side plate 103 and is connected to the annular dust removal cover 701 for driving the annular dust removal cover 701 to move in the vertical direction; the negative pressure pipeline 703 is communicated with the side wall of the annular dust removal cover 701.

[0070] It can be understood that when the steel ring 400 specimen is placed on the bottom plate 102, the annular dust removal cover 701 arranged outside the fixed sleeve 501 starts to descend, so as to cover the push rod 201, the crushing part 202 and the steel ring 400 specimen in the fixed sleeve 501 within the annular dust removal cover 701, which can prevent the dust generated during the crushing process from floating out and polluting the air. The dust is timely sucked out through the negative pressure pipeline 703 communicated with the side wall of the annular dust removal cover 701, and it also avoids the situation that dust floats out when the steel ring 400 is taken out after crushing.

[0071] In one embodiment, a dust-proof ring 7011 that closely adheres to the fixed sleeve 501 is provided on the upper side of the annular dust removal cover 701, and a silicone gasket is provided on the lower bottom surface of the annular dust removal cover 701 for contacting the bottom plate 102.

[0072] Specifically, the provision of the dust-proof ring 7011 and the silicone gasket can form a sealed inner cavity within the annular dust removal cover 701, improving the effect of the negative pressure duct 703 in sucking away dust. Silicone gaskets can also be provided on the upper surface of the bottom plate 102 around the through hole 1021. When the annular dust removal cover 701 moves downward to contact the bottom plate 102, the provision of the silicone gasket on the bottom plate 102 can further improve the sealing effect of the annular dust removal cover 701.

[0073] As Figure 3 and Figure 4 shown, the sample crushing device provided in this embodiment further includes: an air inlet interface 801, provided above the side wall of the fixed sleeve 501 and communicating with the side wall of the fixed sleeve 501 to allow air flow to enter the fixed sleeve 501 through the air inlet interface 801.

[0074] It can be understood that after the crushing of the steel ring 400 sample is completed, a large amount of dust will be generated. Therefore, when the crushing is completed, the air inlet interface 801 provided on the upper side of the fixed sleeve 501 is opened. As Figure 5 and Figure 6 shown, in one example, the touch pressure sleeve 502 is configured with a plurality of air holes 5022 in the circumferential direction, and the plurality of air holes 5022 are used to communicate the air inlet interface 801 and the negative pressure duct 703. Since the sealing performance between the fixed sleeve 501 and the touch pressure sleeve 502, as well as between the touch pressure sleeve 502 and the push rod 201, is relatively good, the air flow entering through the air inlet interface 801 is difficult to flow into the position of the annular dust removal cover 701. However, the plurality of air holes 5022 provided on the touch pressure sleeve 502 can allow the air flow to flow downward, blowing the dust generated by the crushed sample to the annular dust removal cover 701, and then being sucked away by the negative pressure duct 703 provided at the annular dust removal cover 701.

[0075] The above-mentioned air inlet interface 801 starts purging simultaneously when the annular dust removal cover 701 is opened, which can not only purge the crushing table clean, but also purge the crushing part 202 and the push rod 201 clean. This purging process can continue during the upward movement of the push rod 201 driving the crushing part 202, thereby purging the inside of the annular dust removal cover 701 clean. Finally, the driving component 702 drives the annular dust removal cover 701 to move upward, and closes the negative pressure duct 703 and the air inlet structure to complete the dust removal operation during the crushing process.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A sample crushing device, characterized in that, it is used to crush the sample placed in the steel ring, and includes: An installation frame, including a top plate, a bottom plate and side plates. A through hole is formed in the middle of the bottom plate. The steel ring is placed on the bottom plate at the through hole, and the through hole is used for the crushed sample to fall into; A crushing mechanism, arranged inside the installation frame and directly above the through hole. The crushing mechanism includes a push rod and a crushing part. The push rod is arranged vertically, and the crushing part is arranged at the bottom end of the push rod; A driving mechanism, including a driving part and a driving rod. The driving part is arranged on the top plate. One end of the driving rod is connected to the driving part, and the other end passes through the top plate and is connected to the top end of the push rod; The crushing part includes a crushing body, which is fixedly connected to the bottom end of the push rod, and a plurality of crushing hammers are arranged on the side of the crushing body facing away from the push rod; At least one pre-crushing part, fixedly connected to the crushing body and arranged between the plurality of crushing hammers. The height of the pre-crushing part is greater than the height of the crushing hammers; The crushing body is columnar and coaxially arranged with the push rod. The diameter of the crushing body is greater than the diameter of the push rod, and the diameter of the crushing body is the same as the inner diameter of the steel ring; A fixed sleeve, arranged below the top plate and coaxially arranged with the push rod. The lower end face of the fixed sleeve is at a preset distance from the bottom plate; A touch pressure sleeve, arranged between the push rod and the fixed sleeve. The touch pressure sleeve is properly sleeved on the push rod and the crushing body, and the inner side wall of the touch pressure sleeve is stepped. The height of the touch pressure sleeve is greater than the preset distance and less than the height of the fixed sleeve.

2. The sample crushing device according to claim 1, characterized in that, it further includes: An elastic member, sleeved on the push rod between the bottom end of the driving rod and the upper end face of the touch pressure sleeve, and the elastic member is in a compressed state.

3. The sample crushing device according to claim 2, characterized in that, A plurality of installation grooves are formed in the circumferential direction of the lower end face of the touch pressure sleeve, and elastic limiting members are adaptively installed in the installation grooves. The elastic limiting members are used to abut against the steel ring.

4. The sample crushing device according to claim 1, characterized in that, it further includes: A ring-shaped dust removal cover, sleeved on the fixed sleeve, and the height of the ring-shaped dust removal cover is greater than the preset distance; A driving assembly, arranged on the side plate and connected to the ring-shaped dust removal cover, for driving the ring-shaped dust removal cover to move in the vertical direction; A negative pressure pipeline, communicated with the side wall of the ring-shaped dust removal cover.

5. The sample crushing device according to claim 4, characterized in that, A dust-proof ring in close contact with the fixed sleeve is arranged on the upper side of the ring-shaped dust removal cover, and a silica gel pad is arranged on the lower bottom surface of the ring-shaped dust removal cover. The silica gel pad is used to contact the bottom plate.

6. The sample crushing device according to claim 5, characterized in that, it further includes: An air inlet interface, arranged above the side wall of the fixed sleeve and communicated with the side wall of the fixed sleeve, so that air flow can enter the fixed sleeve through the air inlet interface.

7. The sample crushing device according to claim 6, characterized in that, a plurality of air holes are formed in the circumferential direction of the touch pressure sleeve, and the plurality of air holes are used to communicate the air inlet interface and the negative pressure pipeline.

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