CN215541621U

CN215541621U - Laboratory nanometer grinds machine

Info

Publication number: CN215541621U
Application number: CN202120635521.XU
Authority: CN
Inventors: 李伟; 高雪云
Original assignee: Shanghai Pengze Electromechanical Technology Co ltd
Current assignee: Shanghai Pengze Electromechanical Technology Co ltd
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2022-01-18
Anticipated expiration: 2031-03-29

Abstract

The utility model discloses a laboratory nano grinder, which comprises a rack and a main shaft transversely arranged on the rack, wherein one end of the main shaft is provided with a driving mechanism capable of driving the main shaft to rotate, one end of the main shaft, which is far away from the driving mechanism, is provided with a grinding mechanism, a sealing mechanism used for being in sealing connection with the grinding mechanism is sleeved on the main shaft, the sealing mechanism comprises a machine seal shell, one end of the machine seal shell is fixedly connected with the rack, and the laboratory nano grinder is provided with a stable sealing system; the structure of the rotor is designed with high efficiency; self-suction self-circulation structure design: the pump wheel with the discharging function and the discharging bin with the flow guide structure ensure that materials are quickly discharged out of the working cavity under the centrifugal action generated by the pump wheel rotating at a high speed without other conveying devices, enter the hopper through the discharging pipeline, and then enter the working cavity through the discharging port of the hopper, so that the circulation is repeated, and an ideal grinding effect is achieved; less residue and convenient cleaning.

Description

Laboratory nanometer grinds machine

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of grinding equipment, in particular to the technical field of laboratory nano grinding machines.

[ background of the utility model ]

The existing sand mills are known in the wet grinding of pesticides, new nano materials, printing ink, color paste, disperse dyes, coatings, water paint and other emerging industries, and can be roughly divided into horizontal sand mills, basket sand mills, vertical sand mills and the like according to the use performance. The machine mainly comprises a machine body, a grinding cylinder, a sand grinding disc, grinding media, a motor and a feeding pump, wherein the feeding speed is controlled by the feeding pump. But the structure of the traditional sand mill is not reasonable enough, the operation process is not stable enough, and the production efficiency is lower. Traditional sand mill adopts traditional lip to seal or the design of skeleton oil blanket, and life is short, reveals easily, appears the condition that the material leaked easily, and the leakproofness is poor, and in addition, to the machine of grinding of different models, need design corresponding not unidimensional separator, waste time and energy.

[ Utility model ] content

The utility model aims to solve the problems in the prior art and provides a laboratory nano grinder which is better in sealing performance and grinding quality.

In order to achieve the purpose, the utility model provides a laboratory nano grinder, which comprises a rack and a main shaft transversely arranged on the rack, wherein one end of the main shaft is provided with a driving mechanism capable of driving the main shaft to rotate, one end of the main shaft far away from the driving mechanism is provided with a grinding mechanism, the main shaft is sleeved with a sealing mechanism used for being in sealing connection with the grinding mechanism, the sealing mechanism comprises a machine seal shell, one end of the machine seal shell is fixedly connected with the rack, a machine seal cavity capable of allowing the main shaft to penetrate through is arranged in the machine seal shell, a double-end-surface machine seal is arranged in the machine seal cavity, the double-end-surface machine seal is sleeved on the main shaft, two ends of the double-end-surface machine seal are respectively in sealing connection with the main shaft machine seal shell and the grinding mechanism, the machine seal cavity is filled with an organic seal liquid, and the grinding mechanism comprises a grinding rotor fixedly connected with the end part of the grinding rotor, The grinding mechanism comprises a first grinding mechanism end cover and a second grinding mechanism end cover, wherein the first grinding mechanism end cover is connected with the machine seal shell, the second grinding mechanism end cover is arranged opposite to the first grinding mechanism end cover, a barrel body which can be matched with a grinding rotor is arranged between the first grinding mechanism end cover and the second grinding mechanism end cover, the first grinding mechanism end cover, the second grinding mechanism end cover and the barrel body are matched with each other to form a grinding cavity, the grinding rotor is arranged in the grinding cavity, a grinding medium is arranged in the grinding cavity, and a material circulation assembly which is used for leading materials in the grinding mechanism out of one end of the grinding mechanism and then leading the other end of the grinding mechanism into a new material circulation assembly is arranged on the grinding mechanism.

Preferably, the outer cylinder body is sleeved outside the inner cylinder body, and the cooling cavity is arranged between the inner cylinder body and the outer cylinder body.

As preferred, the material circulation subassembly include ejection of compact pipeline and charge-in pipeline, ejection of compact pipeline with charge-in pipeline runs through respectively first grind mechanism end cover the second grind mechanism end cover with grind the chamber intercommunication, the charge-in pipeline input is equipped with the feeder hopper, the ejection of compact pipeline output is located the feeder hopper opening part, it is close to grind the intracavity one end be equipped with be used for with grind the intracavity material carry extremely the pump impeller of ejection of compact pipeline input, the pump impeller cover is located on the main shaft and with main shaft synchronous revolution, the grinding intracavity be close to the one end of pump impeller is equipped with and is used for filtering grinding medium's separating ring.

Preferably, the end cover of the second grinding mechanism is provided with a sewage discharge outlet communicated with the lower side of the grinding cavity.

Preferably, the double-end-face type mechanical seal comprises a rotating ring which is sleeved on the main shaft and is fixedly connected with the main shaft and static rings which are arranged at two ends of the rotating ring and are rotatably and hermetically connected with the rotating ring, the static rings at two ends are respectively fixedly connected with the mechanical seal shell and the first grinding mechanism end cover, and static ring sealing connecting grooves which are matched with the static rings are respectively arranged on the mechanical seal shell and the first grinding mechanism end cover.

Preferably, the grinding rotor is provided with a plurality of rod pins arranged at intervals.

Preferably, two ends of the main shaft are respectively provided with a main shaft sealing ring which is used for being connected with the driving mechanism and the mechanical seal shell in a sealing mode.

Preferably, the driving mechanism comprises a transmission case arranged on the frame and in transmission connection with the main shaft, and a motor arranged on the transmission case and used for driving the transmission case.

Preferably, a liquid receiving tray is arranged on the machine frame and close to the lower side of the grinding mechanism.

The laboratory nano grinder has the beneficial effects that: the utility model has 1 stable sealing system: the double mechanical seals are adopted, so that the equipment can stably run for a long time without leakage when running at a high speed; 2, high-efficiency rotor structural design: the bar pins on the rotor body are densely arranged; the high linear speed design and the narrow grinding area ensure that the grinding energy is more concentrated and the crushing capacity is stronger; 3, self-suction self-circulation structure design: the pump wheel with the discharging function and the discharging bin with the flow guide structure ensure that materials are quickly discharged out of the working cavity under the centrifugal action generated by the pump wheel rotating at a high speed without other conveying devices, enter the hopper through the discharging pipeline, and then enter the working cavity through the discharging port of the hopper, so that the circulation is repeated, and an ideal grinding effect is achieved; 4, less residue and convenient cleaning: no additional conveying device and pipeline are provided, the volume is small, and the residual materials are less; the self-circulation structure is more convenient and fast to clean. Therefore, the method is more suitable for the fields of scientific research, sample test, sample production, formula verification, formula screening and the like in colleges and universities.

The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a schematic diagram of a laboratory nano-grinder according to the present invention.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

In the figure: 1-frame, 2-main shaft, 3-machine seal shell, 4-double end-face machine seal, 6-first grinding mechanism end cover, 7-second grinding mechanism end cover, 8-grinding rotor, 9-inner cylinder, 10-outer cylinder, 11-cooling cavity, 12-discharging pipeline, 13-feeding pipeline, 14-feeding hopper, 15-pump wheel, 16-separating ring, 17-sewage outlet, 18-stationary ring seal connecting groove, 19-grinding cavity, 20-main shaft seal ring, 21-transmission box, 22-motor, 23-liquid receiving tray, 31-machine seal cavity, 41-moving ring, 42-stationary ring and 81-bar pin.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the utility model and not to limit the scope of the utility model. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in when used, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element to which the description refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

referring to fig. 1 and 2, the laboratory nano grinder of the present invention includes a frame 1 and a main shaft 2 transversely disposed on the frame 1. One end of the main shaft 2 is provided with a driving mechanism which can drive the main shaft 2 to rotate. And a grinding mechanism is arranged at one end of the main shaft 2 far away from the driving mechanism. The main shaft 2 is sleeved with a sealing mechanism which is used for being in sealing connection with the grinding mechanism. The sealing mechanism comprises a machine seal housing 3. One end of the mechanical seal shell 3 is fixedly connected with the frame 1. The mechanical seal housing 3 is provided with a mechanical seal cavity 31 through which the main shaft 2 can pass. The double-end-face type mechanical seal 4 is arranged in the mechanical seal cavity 31. The double-end-face mechanical seal 4 is sleeved on the main shaft 2, and two ends of the double-end-face mechanical seal are respectively connected with the mechanical seal shell 3 and the grinding mechanism in a sealing manner. The mechanical seal cavity 31 is filled with organic seal liquid. The grinding mechanism comprises a grinding rotor 8 fixedly connected with the end part of the main shaft 2, a first grinding mechanism end cover 6 connected with the mechanical seal shell 3 and a second grinding mechanism end cover 7 arranged opposite to the first grinding mechanism end cover 6. An inner cylinder 9 which can be matched with the grinding rotor 8 is arranged between the first grinding mechanism end cover 6 and the second grinding mechanism end cover 7. The first grinding mechanism end cover 6, the second grinding mechanism end cover 7 and the inner cylinder 9 are matched with each other to form a grinding cavity 19. The grinding rotor 8 is arranged in a grinding chamber 19. Grinding media are disposed within the grinding chamber 19. The grinding mechanism is provided with a material circulating component which is used for guiding out the materials in the grinding mechanism from one end of the grinding mechanism and then guiding in the materials again from the other end of the grinding mechanism. This embodiment is through setting up sealing mechanism and connecting grinding mechanism, sealing mechanism adopts bi-polar face type machine to seal 4 and carries out two side end face mechanical type seal, guaranteed that equipment is when high-speed operation, also can long-time steady operation, can not produce the problem of revealing, and the service life is prolonged, reduce equipment fault rate, it grinds to set up grinding mechanism, it is a confined cavity to grind chamber 19, main shaft 2 drives grinding rotor 8 and rotates, thereby it moves including the inside grinding medium of grinding chamber 19 to drive, through between the grinding medium, the impact between grinding medium and the material, the shearing force, the overstock pressure reaches the dispersion, kibbling purpose. Because the motion space of the grinding medium is very narrow, the motion linear velocity of the rotor is very high, the grinding medium is ensured to be positioned in a high-speed motion area, and the motion kinetic energy of the grinding medium is higher, so that a stronger crushing effect is ensured, and the grinding device is particularly suitable for the grinding requirement of nano-scale products. Through setting up material circulation subassembly and will grind the material in the mechanism and derive again and lead back and grind the mechanism repeatedly, so circulation is reciprocal, until reaching the grinding effect of ideal, improves and grinds the quality.

Referring to fig. 1 and 2, an outer cylinder 10 is sleeved outside an inner cylinder 9. A cooling cavity 11 is arranged between the inner cylinder 9 and the outer cylinder 10. Set up cooling chamber 11 and conveniently regulate and control grinding temperature, can lead to the coolant liquid and cool down to inside material and equipment in cooling chamber 11, prevent that the high temperature from damaging material and equipment among the grinding process.

Referring to fig. 1 and 2, the material circulation assembly includes a discharge conduit 12 and a feed conduit 13. The discharge pipeline 12 and the feed pipeline 13 respectively penetrate through the first grinding mechanism end cover 6 and the second grinding mechanism end cover 7 to be communicated with the grinding cavity 19. The input end of the feed pipe 13 is provided with a feed hopper 14. The output end of the discharge pipeline 12 is arranged at the opening of the feed hopper 14. And one end of the grinding cavity 19 close to the sealing mechanism is provided with a pump wheel 15 for conveying the materials in the grinding cavity 19 to the input end of the discharge pipeline 12. The pump wheel 15 is sleeved on the main shaft 2 and rotates synchronously with the main shaft 2. A separating ring 16 for filtering the grinding medium is arranged in the grinding chamber 19 at the end adjacent to the pump wheel 15. The pump wheel 15 rotates synchronously with the main shaft 2 to generate negative pressure, the materials in the grinding cavity 19 are pumped to the discharge pipeline 12, the separating ring 16 separates the materials from the grinding media, the grinding media are prevented from flowing into the discharge pipeline 12, the materials flow to the feed hopper 14 through the discharge pipeline 12, the material flows back to the grinding chamber 19 for grinding through the feed conduit 13 under the influence of gravity and the underpressure inside the grinding chamber 19, the reciprocating motion can improve the grinding quality, the grinding of materials is more uniform, the design of a self-suction self-circulation structure, the design of a pump wheel with a discharging function and a discharging bin with a flow guide structure can ensure that under the condition of no other conveying devices, through the centrifugal action that the pump impeller of high-speed rotation produced, discharge the material working chamber fast, get into the hopper through ejection of compact pipeline, the material rethread hopper discharge gate gets into the working chamber, so circulation is reciprocal, reaches the grinding effect of ideal. Set up feeder hopper 14, and the 14 upper ends of feeder hopper set up the opening, are convenient for observe the material and grind the condition, are convenient for add the material in grinding process.

Referring to fig. 1 and 2, the second grinding mechanism end cover 7 is provided with a sewage discharge outlet 17 communicated with the lower side of the grinding cavity 19. The sewage outlet 17 is arranged to facilitate the discharge of impurities in the grinding cavity 19.

Referring to fig. 1 and 2, the double-end-face type mechanical seal 4 includes a rotating ring 41 sleeved on the main shaft 2 and fixedly connected with the main shaft 2, and a stationary ring 42 disposed at two ends of the rotating ring 41 and rotatably and hermetically connected with the rotating ring 41. The two end static rings 42 are respectively and fixedly connected with the mechanical seal shell 3 and the first grinding mechanism end cover 6. The mechanical seal shell 3 and the first grinding mechanism end cover 6 are respectively provided with a static ring seal connecting groove 18 used for being matched with the static ring 42. The double mechanical seals are adopted, so that the equipment can stably run for a long time when running at a high speed, and the leakage problem is not easy to generate. The problems of short service life, easy leakage and the like of the traditional lip seal or framework oil seal design are solved. The static ring sealing connecting groove 18 is matched with the static ring 42, so that the laminating effect is better, and the sealing effect is better.

Referring to fig. 1 and 2, the grinding rotor 8 is provided with a plurality of spaced apart pins 81. The bar pins on the rotor body are densely arranged; due to the design of high linear speed and a narrow grinding area, the grinding energy is more concentrated, the crushing capacity is stronger, the distribution and arrangement of the rod pins are reasonable, the grinding media are all located in a high-speed moving area, and the kinetic energy of the grinding media is higher.

Example two:

referring to fig. 1 and 2, on the basis of the first embodiment, two ends of the main shaft 2 are respectively provided with a main shaft sealing ring 20 for sealing connection with the driving mechanism and the mechanical seal housing 3. The provision of the main shaft seal ring 20 further improves the sealing performance of the main shaft 2.

Referring to fig. 1 and 2, the driving mechanism includes a transmission case 21 disposed on the frame 1 and connected to the spindle 2 in a transmission manner, and a motor 22 disposed in the transmission case 21 for driving the transmission case 21. The transmission box 21 is arranged to be connected with the motor 22 and the spindle 2, so that transmission is more stable, and regulation and control are more convenient.

Referring to fig. 1 and 2, a liquid receiving tray 23 is provided on the frame 1 near the lower side of the grinding mechanism. The liquid receiving tray is arranged to receive liquid and impurities flowing out of the grinding mechanism, so that equipment pollution is avoided.

The working process of the utility model is as follows:

during the working process of the laboratory nano grinder, a material feed hopper 14 is led into a grinding cavity 19, a motor 22 drives a main shaft 2 through a transmission case 2 to drive a grinding rotor 8 to rotate, so that grinding media in the grinding cavity 19 are driven to move in a narrow space of an inner cylinder, the purposes of dispersion and crushing are achieved through collision force, shearing force and pressure between the grinding media and the materials, a pump wheel 15 synchronously rotates along with the main shaft 2 to generate negative pressure, the materials in the grinding cavity 19 are sucked into a discharge pipeline 12, the materials and the grinding media are separated by a separating ring 16, the grinding media are prevented from flowing into the discharge pipeline 12, the materials flow to the feed hopper 14 through the discharge pipeline 12, and the materials flow back to the grinding cavity 19 through a feed pipeline 13 to be ground again under the action of gravity and the negative pressure in the grinding cavity 19, so that the grinding quality is improved in a reciprocating mode.

The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a laboratory nanometer grinds machine, includes frame (1) and transversely locates main shaft (2) on frame (1), main shaft (2) one end is equipped with can drive the rotatory actuating mechanism of main shaft (2), main shaft (2) are kept away from actuating mechanism's one end is equipped with grinds mechanism, its characterized in that: the grinding machine is characterized in that a sealing mechanism used for being in sealing connection with the grinding mechanism is sleeved on the main shaft (2), the sealing mechanism comprises a machine seal shell (3), one end of the machine seal shell (3) is fixedly connected with the machine frame (1), a machine seal cavity (31) through which the main shaft (2) can penetrate is arranged in the machine seal shell (3), a double-end-face type machine seal (4) is arranged in the machine seal cavity (31), the double-end-face type machine seal (4) is sleeved on the main shaft (2), two ends of the double-end-face type machine seal are respectively in sealing connection with the machine seal shell (3) and the grinding mechanism, the machine seal cavity (31) is filled with a machine seal liquid, the grinding mechanism comprises a grinding rotor (8) fixedly connected with the end part of the main shaft (2), a first grinding mechanism end cover (6) used for being connected with the machine seal shell (3) and a second grinding mechanism end cover (7) arranged opposite to the first grinding mechanism end cover (6), first grind mechanism end cover (6) with be equipped with between second grinding mechanism end cover (7) can with grind rotor (8) complex interior barrel (9), first grinding mechanism end cover (6), second grinding mechanism end cover (7), interior barrel (9) mutually support and constitute and grind chamber (19), grind rotor (8) and locate in grinding chamber (19), be equipped with the grinding medium in grinding chamber (19), be equipped with in the grinding mechanism and be used for with the interior material of grinding mechanism is followed grind mechanism one end and derive then follow grind the material circulation subassembly that the mechanism other end leads to again.

2. The laboratory nano-mill of claim 1, wherein: the inner cylinder (9) is sleeved with an outer cylinder (10), and a cooling cavity (11) is arranged between the inner cylinder (9) and the outer cylinder (10).

3. The laboratory nano-mill of claim 1, wherein: the material circulating component comprises a discharge pipeline (12) and a feeding pipeline (13), the discharge pipeline (12) and the feed pipeline (13) respectively penetrate through the first grinding mechanism end cover (6) and the second grinding mechanism end cover (7) and are communicated with the grinding cavity (19), the input end of the feeding pipeline (13) is provided with a feeding hopper (14), the output end of the discharging pipeline (12) is arranged at the opening of the feeding hopper (14), one end of the grinding cavity (19) close to the sealing mechanism is provided with a pump wheel (15) used for conveying the materials in the grinding cavity (19) to the input end of the discharge pipeline (12), the pump wheel (15) is sleeved on the main shaft (2) and rotates synchronously with the main shaft (2), and a separating ring (16) for filtering the grinding medium is arranged at one end of the grinding cavity (19) close to the pump wheel (15).

4. The laboratory nano-mill of claim 1, wherein: and a sewage discharge outlet (17) communicated with the lower side of the grinding cavity (19) is formed in the end cover (7) of the second grinding mechanism.

5. The laboratory nano-mill of claim 1, wherein: double-end-face type mechanical seal (4) locate including the cover main shaft (2) on and with main shaft (2) fixed connection's rotating ring (41) with locate rotating ring (41) both ends and with rotating ring (41) rotatable sealing connection's quiet ring (42), both ends quiet ring (42) respectively with mechanical seal casing (3) first grinding mechanism end cover (6) fixed connection, mechanical seal casing (3) first grinding mechanism end cover (6) on be equipped with respectively be used for with quiet ring (42) complex quiet ring seal connection groove (18).

6. The laboratory nano-mill of claim 1, wherein: the grinding rotor (8) is provided with a plurality of rod pins (81) arranged at intervals.

7. The laboratory nano-mill of claim 1, wherein: and two ends of the main shaft (2) are respectively arranged on a main shaft sealing ring (20) which is used for being in sealing connection with the driving mechanism and the mechanical seal shell (3).

8. The laboratory nano-mill of claim 1, wherein: the driving mechanism comprises a transmission case (21) arranged on the rack (1) and in transmission connection with the main shaft (2), and a motor (22) arranged on the transmission case (21) and used for driving the transmission case (21).

9. The laboratory nano-mill of claim 1, wherein: and a liquid receiving tray (23) is arranged on the rack (1) and close to the lower side of the grinding mechanism.