A laboratory vented ball mill jar
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN JIECHENG NICKEL COBALT NEW ENERGY TECH CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-06-26
Smart Images
Figure CN224405258U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ball milling technology, specifically to a ball milling jar for laboratory use. Background Technology
[0002] In laboratories, ball mills are common equipment, often used for material processing and mineral grinding. The grinding jar is the core component of a ball mill. It works by loading grinding media (such as steel balls, ceramic balls, etc.) and the material to be ground into the jar, and then driving the jar to rotate. During the rotation of the jar, the grinding media apply impact and friction to the material being ground, thereby achieving the purpose of crushing and mixing the material.
[0003] Currently, in the process of grinding materials using a ball mill jar, it is sometimes necessary to introduce a certain gas into the ball mill jar to react with the grinding material (referred to as gas-feeding reaction). However, the air inlet connector on the existing ball mill jar is fixed and cannot be rotated. If a gas-feeding reaction is required, the ball mill jar must be stopped first, then the air pipe must be connected to the air inlet connector to fill the ball mill jar with gas, and then the connection of the air pipe must be disconnected before grinding can continue. This undoubtedly causes waiting, wastes time, and reduces grinding efficiency. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides a ball milling jar for laboratory use. By setting a rotary sealing joint with a one-way air inlet valve at the center of the bottom of the jar, the ball milling jar can maintain the air pipe connection for air circulation reaction during rotation, which can avoid waiting, save time, and improve grinding efficiency.
[0005] This utility model provides a laboratory balloon mill jar, including a jar body with one open end and a cover detachably installed on the open side of the jar body. An air inlet hole is provided at the center of the bottom of the jar body, and an annular mounting seat is formed protruding outward from the bottom of the jar body. The annular mounting seat is coaxial with the air inlet hole. A rotary sealing joint is provided in the annular mounting seat, and the rotary sealing joint is connected to the jar body through the air inlet hole.
[0006] The rotary sealing joint includes a first connector and a second connector. The first connector is fixedly disposed in the annular mounting base, and the second connector is rotatably disposed in the first connector. A one-way air intake valve is provided at the end of the second connector away from the first connector.
[0007] Specifically, the first connector includes a first pipe head and a first sleeve head connected as one piece. The first pipe head is inserted into the air inlet hole, and a first filter is provided at the air outlet of the first pipe head. The first sleeve head is fixedly installed in the annular mounting base, and a first sealing ring is provided between the first sleeve head and the bottom of the tank body.
[0008] The second connector includes a second pipe head and a second sleeve head connected as one piece. The second pipe head is rotatably disposed in the first sleeve head based on a bearing. A second sealing ring is provided between the outer wall of the second pipe head and the inner wall of the first sleeve head. The second sealing ring is located between the first pipe head and the bearing. The second sleeve head is located outside the first sleeve head, and the one-way air intake valve is disposed in the second sleeve head.
[0009] Specifically, the opening of the can body is provided with at least three first positioning connection parts in a circumferential array around it, and the cover body is provided with at least three second positioning connection parts in a circumferential array around it. The first positioning connection parts and the second positioning connection parts correspond one-to-one and are connected by hand-tightening screws.
[0010] Specifically, a screen sheet is snapped into the opening of the tank, and at least three snapping blocks are arranged in a circumferential array around the screen sheet. At least three L-shaped snapping slots are arranged in a circumferential array around the opening of the tank. The L-shaped snapping slots and the first positioning connection part are alternately distributed, and the snapping blocks and the L-shaped snapping slots correspond one-to-one.
[0011] Specifically, a third sealing ring is embedded along the lower surface edge of the cover;
[0012] When the cover is closed on the tank, the third sealing ring abuts against the edge of the screen.
[0013] Specifically, the central region of the screen sheet has a first conical structure, and the first conical structure protrudes in a direction away from the bottom of the tank;
[0014] The lower surface of the cover has a second conical structure, and the second conical structure protrudes in a direction away from the bottom of the can;
[0015] When the cover is placed on the tank, the upper surface of the first conical structure and the lower surface of the second conical structure fit together.
[0016] Specifically, a pressure relief through hole is provided in the central area of the cover, a pressure relief valve is installed in the pressure relief through hole, and a second filter is provided at the air inlet of the pressure relief valve.
[0017] Specifically, the angle between the bottom of the tank and the inner wall of the tank is rounded.
[0018] Specifically, the sidewall of the tank body is formed with a thick-walled portion protruding radially, and a plurality of elongated through holes are provided in the thick-walled portion along the length direction of the tank body, and the plurality of elongated through holes are distributed at equal intervals.
[0019] Specifically, the plurality of elongated through holes are filled with sound-absorbing material strips; and / or
[0020] The plurality of elongated through holes are filled with phase change material strips.
[0021] Compared with the prior art, the beneficial effects of this utility model are:
[0022] In the laboratory ball milling jar of this utility model, a rotary sealing joint is provided at the center of the bottom of the jar body. The rotary sealing joint includes a first connector and a second connector. The first connector is fixedly installed in the annular mounting base, and the second connector is rotatably installed in the first connector. A one-way air inlet valve is provided at the end of the second connector away from the first connector. The one-way air inlet valve is used to connect the air pipe. In this way, even when the ball milling jar is rotating, the air pipe connection can be maintained for the air inlet reaction, without having to stop the ball milling jar to connect the air pipe and fill it with air. This allows the grinding process and the air inlet reaction to occur simultaneously, avoiding downtime and saving time costs, and improving the grinding efficiency of the ball milling jar. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a three-dimensional structural schematic diagram of the laboratory balloon blasting jar from a top view in an embodiment of this utility model;
[0025] Figure 2 This is a three-dimensional structural diagram of the laboratory balloon blasting jar from an upward perspective in an embodiment of this utility model;
[0026] Figure 3 This is a cross-sectional structural schematic diagram of the laboratory balloon mill jar in this embodiment of the present invention;
[0027] Figure 4 yes Figure 3 Enlarged structural diagram of region A in the middle;
[0028] Figure 5 This is an exploded structural diagram of the laboratory balloon mill jar in this embodiment of the present invention;
[0029] Figure 6 yes Figure 3 A magnified schematic diagram of the structure of region B in the middle.
[0030] In the attached drawings, 100 is the tank body; 111 is the air inlet; 112 is the annular mounting base; 121 is the first positioning connection part; 122 is the L-shaped snap-fit groove; 130 is the reinforcing ring; 140 is the rounded corner; 150 is the elongated through hole; 200 is the cover; 211 is the second positioning connection part; 212 is the pressure relief through hole; 300 is the rotary sealing joint; 310 is the first connector; 311 is the first pipe end; 312 is the first sleeve; 320 is the second connector; 321 is the second pipe end; 322 is the second sleeve; 400 is the one-way air inlet valve; 510 is the first filter; 520 is the second filter; 610 is the first sealing ring; 620 is the second sealing ring; 630 is the third sealing ring; 710 is the bearing; 720 is the hand-tightening screw; 730 is the pressure relief valve; 800 is the screen; 810 is the snap-fit block. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0032] This invention provides a laboratory ball mill jar. Figure 1 The diagram shows a three-dimensional structural schematic from a top view of the laboratory balloon blasting jar in an embodiment of this utility model. Figure 2 The diagram shows a three-dimensional structural schematic of a laboratory balloon mill jar from a bottom view in an embodiment of the present invention. The laboratory balloon mill jar includes a jar body 100 with one end open and a cover 200 detachably installed on the open side of the jar body 100. Figure 3 This diagram shows a cross-sectional view of the laboratory balloon mill jar in an embodiment of the present invention. Figure 4 It shows Figure 3An enlarged structural diagram of area A shows that the tank 100 has an air inlet hole 111 at its bottom center, and an annular mounting seat 112 protrudes outward from the bottom of the tank 100. The annular mounting seat 112 is coaxial with the air inlet hole 111. A rotary sealing joint 300 is provided in the annular mounting seat 112, and the rotary sealing joint 300 connects to the tank 100 based on the air inlet hole 111. The rotary sealing joint 300 includes a first connector 310 and a second connector 320. The first connector 310 is fixedly disposed in the annular mounting seat 112, and the second connector 320 is rotatably disposed in the first connector 310. A one-way air inlet valve 400 is provided at the end of the second connector 320 away from the first connector 310.
[0033] In the laboratory ball milling jar of this utility model, a rotary sealing joint 300 is provided at the center of the bottom of the jar body 100. The rotary sealing joint 300 includes a first connector 310 and a second connector 320. The first connector 310 is fixedly installed in the annular mounting base 112, and the second connector 320 is rotatably installed in the first connector 310. A one-way air inlet valve 400 is provided at the end of the second connector 320 away from the first connector 310. The one-way air inlet valve 400 is used to connect the air pipe. In this way, even if the ball milling jar is rotating, the air pipe connection can be maintained for the air-purifying reaction, without having to stop the ball milling jar to connect the air pipe and fill it with air. This allows the grinding process and the air-purifying reaction to occur simultaneously, avoiding downtime and saving time costs, and improving the grinding efficiency of the ball milling jar.
[0034] Moreover, the rotary sealing joint 300 is set at the bottom center of the tank body 100 through the annular mounting seat 112, which is firm and reliable and has good installation stability. This allows the second joint 320 to rotate smoothly relative to the first joint 310 without forming an eccentric rotation trajectory, which is beneficial to maintaining a stable connection between the one-way air inlet valve 400 and the air pipe.
[0035] In some specific embodiments, please refer to Figure 4 The first connector 310 includes a first tube head 311 and a first sleeve head 312 connected as one piece. The first tube head 311 is inserted into the air inlet hole 111. A first filter 510 is provided at the air outlet of the first tube head 311. The presence of the first filter 510 can prevent material from entering the first tube head 311. The first sleeve head 312 is fixedly disposed in the annular mounting base 112. A first sealing ring 610 is provided between the first sleeve head 312 and the bottom of the tank body 100. The presence of the first sealing ring 610 can effectively improve the sealing performance between the first sleeve head 312 and the annular mounting base 112 and prevent air leakage.
[0036] Furthermore, please see Figure 4The second connector 320 includes a second tube head 321 and a second sleeve head 322 connected as one piece. The second tube head 321 is rotatably disposed in the first sleeve head 312 based on a bearing 710. The bearing 710 can effectively support the rotation of the second tube head 321 relative to the first sleeve head 312, and has good rotational stability. A second sealing ring 620 is provided between the outer wall of the second tube head 321 and the inner wall of the first sleeve head 312. The second sealing ring 620 is located between the first tube head 311 and the bearing 710. The second sealing ring 620 ensures that the second tube head 321 can still maintain good sealing performance when rotating relative to the first sleeve head 312, and prevents gas from leaking from the bearing 710. The second sleeve head 322 is located outside the first sleeve head 312, and the one-way air inlet valve 400 is disposed in the second sleeve head 322 for easy connection of the air pipe.
[0037] For details, please refer to Figure 4 The second tube head 321 is rotatably mounted in the first sleeve head 312 based on at least two bearings 710, which not only provides high rotational stability but also a long service life; the second sealing ring 620 is provided with at least three, which can ensure long-term stable sealing effect.
[0038] Figure 5 An exploded structural diagram of a laboratory balloon mill jar in an embodiment of this utility model is shown. At least three first positioning connection parts 121 are arranged in a circumferential array around the opening of the jar body 100, and at least three second positioning connection parts 211 are arranged in a circumferential array around the lid 200. The first positioning connection parts 121 and the second positioning connection parts 211 correspond one-to-one. The first positioning connection parts 121 and the second positioning connection parts 211 are connected by a hand-tightening screw 720 to ensure that the lid 200 can be firmly installed on the jar body 100.
[0039] Preferably, there are four first positioning connection parts 121 and four second positioning connection parts 211, which helps to maintain a balanced fastening connection force between the cover 200 and the can 100.
[0040] In some specific embodiments, please refer to Figure 5 A reinforcing ring 130 is formed radially protruding from the opening of the jar body 100. The reinforcing ring 130 is located below the first positioning connection part 121. The presence of the reinforcing ring 130 can enhance the opening strength of the jar body 100 and ensure the service life of the ball mill jar.
[0041] In some specific embodiments, please refer to Figure 5A screen 800 is snapped into the opening of the tank 100. The presence of the screen 800 facilitates the separation of the grinding media and the grinding object. That is, after grinding, the cover 200 can be removed separately, and the ground material can be poured out through the screen 800. The grinding media and residual impurities remain in the tank 100. The screen 800 can then be removed for cleaning. At least three snap-fit blocks 810 are arranged in a circular array around the screen 800, and at least three L-shaped snap-fit grooves 122 are arranged in a circular array around the opening of the tank 100. The L-shaped snap-fit grooves 122 and the first positioning connection part 121 are alternately distributed. The snap-fit blocks 810 and the L-shaped snap-fit grooves 122 correspond one-to-one to ensure that the screen 800 can be firmly snapped into the opening of the tank 100.
[0042] Preferably, four snap-fit blocks 810 and four L-shaped snap-fit grooves 122 are provided, which helps to ensure that the screen sheet 800 fits tightly around the opening of the tank body 100.
[0043] For details, please refer to Figure 1 When the snap-fit block 810 is snapped into the corresponding L-shaped snap-fit groove 122, the end of the snap-fit block 810 protrudes out of the corresponding L-shaped snap-fit groove 122, making it easy for people to move the snap-fit block 810 and to facilitate the installation and removal of the screen sheet 800.
[0044] Figure 6 It shows Figure 3 An enlarged structural diagram of region B shows that a third sealing ring 630 is embedded along the lower surface edge of the cover 200. When the cover 200 is closed on the tank 100, the third sealing ring 630 abuts against the edge of the screen 800. The presence of the third sealing ring 630 can improve the sealing effect between the cover 200 and the tank 100, preventing material leakage. At the same time, the third sealing ring 630 can also be used to press the screen 800 to prevent the screen 800 from vibrating when the ball mill jar rotates.
[0045] For details, please refer to Figure 6 The central area of the screen 800 has a first conical structure, which protrudes away from the bottom of the jar 100. This facilitates the pouring of ground material and reduces the probability of the grinding media colliding with the screen 800 during the grinding process, thus protecting the screen 800. The lower surface of the cover 200 has a second conical structure, which protrudes away from the bottom of the jar 100. When the cover 200 is closed on the jar 100, the upper surface of the first conical structure and the lower surface of the second conical structure match, which not only prevents material from passing through the screen 800 during the grinding process but also prevents the screen 800 from vibrating when the ball mill jar rotates.
[0046] Furthermore, the height of the protrusion of the first conical structure does not exceed 15mm, which facilitates the processing and shaping of the screen sheet 800 on the one hand, and avoids the central area of the screen sheet 800 from being too tilted on the other hand.
[0047] In some specific embodiments, please refer to Figure 5 The central area of the cover 200 is provided with a pressure relief through hole 212, and a pressure relief valve 730 is installed in the pressure relief through hole 212. The pressure relief valve 730 can automatically relieve pressure when the pressure inside the ball mill jar is too high, ensuring the safety of using the ball mill jar. Moreover, people can also actively open the pressure relief valve 730 to relieve pressure, ensuring the safety of people when opening the ball mill jar.
[0048] For details, please refer to Figure 6 A second filter 520 is provided at the air inlet of the pressure relief valve 730. The presence of the second filter 520 can prevent material from entering the pressure relief valve 730.
[0049] In some specific embodiments, please refer to Figure 3 The angle between the bottom of the tank 100 and the inner wall of the tank 100 is a rounded corner of 140°. The presence of the rounded corner of 140° can reduce dead corners and facilitate the material to be fully ground.
[0050] In some specific embodiments, please refer to Figure 3 The sidewall of the tank 100 is formed with a thick wall portion protruding radially. A plurality of elongated through holes 150 are provided in the thick wall portion along the length direction of the tank 100. The plurality of elongated through holes 150 are evenly distributed. The presence of the plurality of elongated through holes 150 can increase the surface area of the tank 100, which is beneficial for ventilation and heat dissipation.
[0051] Specifically, sound-absorbing material strips can be filled into the multiple elongated through holes 150 to help reduce noise during the grinding process. The raw materials for the sound-absorbing material strips can be organic fibers, inorganic fibers, inorganic foam, and foamed plastics, etc. Furthermore, phase change material strips can also be filled into the multiple elongated through holes 150 to help maintain the stability of the tank 100 temperature during the grinding process. The phase change material strip includes a strip-shaped shell and a phase change material filled inside the strip-shaped shell, such as paraffin wax, hydrated crystalline salts, acetic acid, etc.
[0052] In addition, if it is necessary to remove the sound-absorbing material strip or phase change material strip in the elongated through hole 150, it can be blown out of the elongated through hole 150 with compressed air, which is convenient and quick.
[0053] In some specific embodiments, the cover 200 and the can 100 are made of metal, such as stainless steel or tungsten carbide, which are sturdy and durable; the can 100 is provided with an inner lining, which can be made of polytetrafluoroethylene, nylon, polyurethane, agate, zirconium oxide, silicon carbide or hard alloy, etc., and can be adapted according to specific needs.
[0054] This utility model discloses a laboratory ball milling jar. By setting a rotary sealing joint 300 with a one-way air inlet valve 400 at the bottom center of the jar body 100, the ball milling jar can maintain the air pipe connection for air circulation reaction during rotation, without the need to stop the ball milling jar to connect the air pipe for air filling. This allows the grinding process and air circulation reaction to occur simultaneously, avoiding downtime and saving time costs, and improving the grinding efficiency of the ball milling jar. The rotary sealing joint 300 is set at the bottom center of the jar body 100 through an annular mounting base 112, which is firm and reliable and has good installation stability. This allows the second connector 320 to rotate smoothly relative to the first connector 310 without forming an eccentric rotation trajectory, which helps to maintain a stable connection between the one-way air inlet valve 400 and the air pipe.
[0055] Furthermore, a screen 800 is snapped into the opening of the tank 100 to facilitate the separation of grinding media and grinding objects; the central area of the screen 800 has a first conical structure, which facilitates the pouring of ground materials and reduces the probability of grinding media colliding with the screen 800 during the grinding process, thus protecting the screen 800; the lower surface of the cover 200 matches the upper surface of the screen 800, which not only prevents materials from passing through the screen 800 during the grinding process, but also prevents the screen 800 from vibrating when the ball mill jar rotates.
[0056] In addition, a pressure relief valve 730 is provided on the cover 200, which can automatically relieve pressure when the pressure inside the grinding jar is too high, ensuring the safety of using the grinding jar; people can also actively open the pressure relief valve 730 to relieve pressure, ensuring the safety of people when opening the grinding jar.
[0057] Furthermore, the side wall of the tank 100 is provided with multiple elongated through holes 150. These through holes 150 themselves increase the surface area of the tank 100, which is beneficial for ventilation and heat dissipation. Sound-absorbing material strips can be filled into the through holes 150 to reduce noise during the grinding process. Phase change material strips can also be filled into the through holes 150 to help maintain the temperature stability of the tank 100 during grinding. The interior of the tank 100 can be fitted with linings of different materials according to specific needs, making it highly practical.
[0058] The above provides a detailed description of a laboratory balloon blasting jar provided by the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A vented ball mill jar for laboratory use, comprising a jar body having an open end and a lid body detachably attached to the open end of the jar body, characterized in that, An air inlet hole is provided at the center of the bottom of the tank body, and an annular mounting seat is formed protruding outward from the bottom of the tank body. The annular mounting seat is coaxial with the air inlet hole. A rotary sealing joint is provided in the annular mounting seat, and the rotary sealing joint is connected to the tank body based on the air inlet hole. The rotary sealing joint includes a first connector and a second connector. The first connector is fixedly disposed in the annular mounting base, and the second connector is rotatably disposed in the first connector. A one-way air intake valve is provided at the end of the second connector away from the first connector.
2. The laboratory ball mill jar as described in claim 1, characterized in that, The first connector includes a first pipe head and a first sleeve head connected as one piece. The first pipe head is inserted into the air inlet hole, and a first filter is provided at the air outlet of the first pipe head. The first sleeve head is fixedly installed in the annular mounting base, and a first sealing ring is provided between the first sleeve head and the bottom of the tank body. The second connector includes a second tube head and a second sleeve head connected as one piece. The second tube head is rotatably disposed in the first sleeve head based on a bearing. A second sealing ring is provided between the outer wall of the second tube head and the inner wall of the first sleeve head. The second sealing ring is located between the first tube head and the bearing. The second sleeve head is located outside the first sleeve head, and the one-way air intake valve is disposed in the second sleeve head.
3. The laboratory ball mill jar as described in claim 1, characterized in that, The opening of the can is surrounded by a circumferential array of at least three first positioning connection parts, and the cover is surrounded by a circumferential array of at least three second positioning connection parts. The first positioning connection parts and the second positioning connection parts correspond one-to-one and are connected by hand-tightening screws.
4. The laboratory ball mill jar as described in claim 3, characterized in that, A screen sheet is snapped into the opening of the tank. At least three snapping blocks are arranged in a circumferential array around the screen sheet. At least three L-shaped snapping slots are arranged in a circumferential array around the opening of the tank. The L-shaped snapping slots and the first positioning connection part are alternately distributed. The snapping blocks and the L-shaped snapping slots correspond one-to-one.
5. The laboratory ball mill jar as described in claim 4, characterized in that, A third sealing ring is embedded along the lower surface edge of the cover; When the cover is closed on the tank, the third sealing ring abuts against the edge of the screen.
6. The laboratory ball mill jar as described in claim 4, characterized in that, The central region of the screen sheet has a first conical structure, and the first conical structure protrudes in a direction away from the bottom of the tank. The lower surface of the cover has a second conical structure, and the second conical structure protrudes in a direction away from the bottom of the can; When the cover is placed on the tank, the upper surface of the first conical structure and the lower surface of the second conical structure fit together.
7. The laboratory ball mill jar as described in claim 1, characterized in that, The central area of the cover has a pressure relief hole, a pressure relief valve is installed in the pressure relief hole, and a second filter is provided at the air inlet of the pressure relief valve.
8. The laboratory ball mill jar as described in claim 1, characterized in that, The angle between the bottom of the tank and the inner wall of the tank is rounded.
9. The laboratory ball mill jar as described in claim 1, characterized in that, The sidewall of the tank body is formed with a thick wall portion protruding radially, and a plurality of elongated through holes are provided in the thick wall portion along the length direction of the tank body, and the plurality of elongated through holes are distributed at equal intervals.
10. The laboratory ball mill jar as described in claim 9, characterized in that, The plurality of elongated through holes are filled with sound-absorbing material strips; and / or The plurality of elongated through holes are filled with phase change material strips.