Novel pressing and looseness-preventing device for milling tank of planetary ball mill

Abstract

The utility model relates to the technical field of planetary ball mills, and particularly discloses a novel planetary ball mill tank pressing anti-loosening device which is characterized in that firstly, a cross beam is clamped into a square hole of a tank grinding seat, a screw rod is rotated to drive a ratchet wheel to rotate, and a ratchet inclined surface of the ratchet wheel can apply axial component force to an inclined surface of a plug pin shaft, so that the plug pin shaft compresses a spring and moves outwards in the axial direction; in the rotating process of the ratchet wheel, the bolt shaft is quickly inserted into ratchets of the ratchet wheel under the acting force of the spring, and the grinding tank is pressed and fixed by the pressing block at the lower end of the screw rod along with continuous rotation of the screw rod until the screw rod rotates in place; at the moment, the lead screw is rotated anticlockwise to drive the ratchet wheel to rotate, the ratchet straight face of the ratchet wheel exerts radial force on the straight face of the plug pin shaft, the axial component force of the plug pin shaft is zero, and the stress direction of the plug pin shaft is perpendicular to the movable direction, so that the plug pin shaft cannot move outwards in the axial direction of the plug pin shaft, namely, the plug pin shaft cannot move, and the lead screw cannot rotate. Therefore, the pressing and anti-loosening effects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary ball mills, and specifically relates to a novel pressing and anti-loosening device for the grinding pot of a planetary ball mill. Background Technique

[0002] Planetary ball mills are mainly designed for powder crushing or grinding of dispersed metals, non-metals, Chinese herbal medicines, cosmetics, electronic products, etc. Most traditional pressing devices for the grinding pots of planetary ball mills adopt double-nut anti-loosening devices. When the planetary ball mill is running, it rotates forward for a period of time and then reverses for a period of time, alternating repeatedly. At the same time, the grinding balls in the grinding pot continuously grind and impact the materials, resulting in large vibrations during the operation of the planetary ball mill. Under the action of the repeated forward and reverse rotations and vibrations of the ball mill, the double-nut tightening and anti-loosening become unreliable. When the pre-tightening force of the nut is insufficient, the nut loosens within a short period of time, causing the pressing device to not tightly press the grinding pot, resulting in the grinding pot flying out of the grinding pot seat and causing major equipment accidents. Moreover, determining whether the pressing device is locked in place completely depends on the operator's feeling.

[0003] In view of this, researching a novel pressing and anti-loosening device for the grinding pot of a planetary ball mill is an urgent technical problem that needs to be solved by those skilled in the art. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a novel pressing and anti-loosening device for the grinding pot of a planetary ball mill, so as to solve the above-mentioned technical problems.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: A novel pressing and anti-loosening device for the grinding pot of a planetary ball mill includes a lead screw with an external thread. The lower end of the lead screw is connected with a pressing block. A cross beam with an internal thread is threadedly sleeved on the lead screw and is located above the pressing block. The top surface of the cross beam is fixedly connected with a bottom plate. A ratchet seat that forms a first cavity with the bottom plate is fixedly connected to the bottom plate. A ratchet that is movably sleeved on the lead screw is arranged in the first cavity. A groove is vertically opened on the lead screw. A convex block that matches the groove is arranged on the ratchet. One side of the ratchet seat is fixedly connected with a pin sleeve that forms a second cavity with the ratchet seat. An L-shaped notch is opened on the pin sleeve. A pin shaft is arranged in the second cavity. One end of the pin shaft is slidably connected with the L-shaped notch. A spring for inserting the head of the pin shaft into the ratchet is sleeved on the other end of the pin shaft.

[0006] Preferably, the end of the spring away from the ratchet abuts against the inner end surface of the pin sleeve, and the other end of the spring abuts against the shoulder of the pin shaft.

[0007] Preferably, it further includes a first connecting screw, and the bottom plate is fixed on the cross beam through the first connecting screw.

[0008] Preferably, it further includes a second connecting screw, and the pin sleeve is fixed to one side of the ratchet seat by the second connecting screw.

[0009] Preferably, it further includes a third connecting screw, and the ratchet seat is fixed to the bottom plate by the third connecting screw.

[0010] Preferably, it further includes a shaft retaining ring, and the pressing block is connected to the lower end of the lead screw by the shaft retaining ring.

[0011] Preferably, a handle is fixedly connected to the upper end of the lead screw.

[0012] Compared with the prior art, for a novel grinding tank pressing and anti-loosening device of a planetary ball mill provided by the present utility model, first, the cross beam is clamped into the square hole of the grinding tank seat, and the lead screw is rotated to drive the ratchet to rotate. The inclined surface of the ratchet teeth will give an axial component force to the inclined surface of the pin shaft, so that the pin shaft compresses the spring and moves axially outward. During the rotation of the ratchet, the pin shaft quickly inserts into the ratchet teeth under the action of the spring. As the lead screw continues to rotate until the lead screw rotates in place, the grinding tank will be pressed and fixed by the pressing block at the lower end of the lead screw; at this time, the lead screw is rotated counterclockwise to drive the ratchet to rotate, and the straight surface of the ratchet teeth gives a radial force to the straight surface of the pin shaft. Since the axial component force of the pin shaft is zero, the force direction of the pin shaft is perpendicular to the movable direction, so that the pin shaft cannot move axially outward, that is, the pin shaft cannot move and the lead screw cannot rotate, thus achieving the function of pressing and anti-loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a cross-sectional view of a novel grinding tank pressing and anti-loosening device of a planetary ball mill according to the present utility model,

[0014] Figure 2 is a top view of a novel grinding tank pressing and anti-loosening device of a planetary ball mill according to the present utility model.

[0015] In the figure: 1. Handle, 2. Lead screw, 3. Ratchet, 4. Ratchet seat, 5. Bottom plate, 6. Cross beam, 7. First connecting screw, 8. Pressing block, 9. Pin shaft, 10. Spring, 13. Pin sleeve, 14. Second connecting screw, 15. Third connecting screw, 16. L-shaped notch. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0017] Please refer toFigure 1 , Figure 2 The utility model provides a novel planetary ball mill grinding jar clamping and anti-loosening device, comprising a screw rod 2 with an external thread, a pressing block 8 connected to the lower end of the screw rod 2, a cross beam 6 with an internal thread located on the upper side of the pressing block 8 and threadedly sleeved on the screw rod 2, a bottom plate 5 fixedly connected to the top surface of the cross beam 6, a ratchet seat 4 which forms a first cavity with the bottom plate 5 is fixedly connected to the bottom plate 5, so that the ratchet seat 4 and the bottom plate 5 move up and down with the cross beam 6, a ratchet 3 movably sleeved on the screw rod 2 is provided in the first cavity, and a vertical opening is opened on the screw rod 2 There is a groove, and a protrusion matching the groove is provided on the ratchet 3. When the crossbeam 6 is fixed and the screw 2 rotates, the ratchet 3 can move up and down along the screw 2 based on the matching of the protrusion and the groove. One side of the ratchet seat 4 is fixedly connected with a pin sleeve 13 that forms a second cavity with the ratchet seat 4. An L-shaped groove 16 is provided on the pin sleeve 13. A pin shaft 9 is provided in the second cavity. One end of the pin shaft 9 is slidably connected to the L-shaped groove 16, and the other end of the pin shaft 9 is sleeved with a spring 10 for inserting the head of the pin shaft 9 into the ratchet 3.

[0018] The cam 6 is pressed against the outer surface of the cam 8 and the cam 8 is pressed against the outer surface of the cam 8. The cam 6 is pressed against the outer surface of the cam 8 and the cam 8 is pressed against the outer surface of the cam 8. The direction is perpendicular to the movable direction, so that the latch shaft 9 cannot move outward along the axial direction of the latch shaft 9, that is, the latch shaft 9 cannot move and the screw rod 2 cannot rotate, thereby achieving the effect of clamping and preventing loosening; when the clamping and preventing loosening device needs to be disassembled, the latch shaft 9 is first pulled outward to move it to the top of the L-shaped notch 16 and get stuck in the notch edge of the L-shaped notch 16. At this time, the head of the latch shaft 9 moves outward and out of the rotation range of the ratchet 3, and the head of the latch shaft 9 no longer prevents the ratchet 3 from rotating. Since the crossbeam 6 is fixed, by rotating the screw rod 2 counterclockwise, the rotation of the screw rod 2 drives the ratchet 3 to rotate counterclockwise, and the screw rod 2 moves upward and then drives the pressure block 8 to move upward, so that the pressure block 8 is separated from the external grinding tank. After the pressure block 8 is separated from the external grinding tank for a certain distance, the new planetary ball mill grinding tank clamping and preventing loosening device can be taken out, thereby completing the disassembly of the new planetary ball mill grinding tank clamping and preventing loosening device.

[0019] likeFigure 1 , Figure 2 As shown in Figure 2 , one end of the spring 10 away from the ratchet wheel 3 abuts against the inner end face of the pin sleeve 13, and the other end of the spring 10 abuts against the shoulder of the pin shaft 9.

[0020] In this embodiment, by abutting the two end portions of the spring 10 against the inner end face of the pin sleeve 13 and the shoulder of the pin shaft 9 respectively, since the pin sleeve 13 is fixedly connected to the ratchet seat 4, therefore, the spring 10 can effectively ensure that the head of the pin shaft 9 is always inserted into the ratchet teeth of the ratchet wheel 3.

[0021] As Figure 1 shown, it further includes a first connecting screw 7, and the bottom plate 5 is fixed on the cross beam 6 by the first connecting screw 7. This structure ensures the reliability of the fixed connection between the bottom plate 5 and the cross beam 6. Using the first connecting screw 7 to fix the bottom plate 5 on the cross beam 6 is only one of the fixed connection methods. In actual application, the bottom plate 5 can also be fixed by other methods such as screw nuts, bolts, welding, riveting, etc.

[0022] It should be noted that the head of the pin shaft 9 can be inserted into the inside of the ratchet wheel 3 under the action of the spring, thereby preventing the ratchet wheel 3 from rotating; at the same time, one end of the pin shaft 9 away from the ratchet wheel 3 can slide along the L-shaped notch 16 and be fixed on the notch edge of the L-shaped notch 16. At this time, the head of the pin shaft 9 will be out of the rotation range of the ratchet wheel 3, that is, the pin shaft 9 no longer limits the rotation of the ratchet wheel 3, realizing the pressing and anti-loosening of the grinding tank of this planetary ball mill.

[0023] As Figure 1 shown, it further includes a second connecting screw 14, and the pin sleeve 13 is fixed on one side of the ratchet seat 4 by the second connecting screw 14. In this structure, based on the second connecting screw 14, it ensures that the pin sleeve 13 is stably fixed on the outside of the ratchet seat 4, and further forms a stable second cavity for the pin shaft 9 to move between the ratchet seat 4 and the pin sleeve 13, providing a structural guarantee for the device to realize pressing and anti-loosening.

[0024] As Figure 1 shown, it further includes a third connecting screw 15, and the ratchet seat 4 is fixed on the bottom plate 5 by the third connecting screw 15. In this structure, based on the third connecting screw 15, it ensures the connection reliability between the ratchet seat 4 and the bottom plate 5, so that the ratchet seat 4 and the bottom plate 5 move together with the cross beam 6.

[0025] Among them, it further includes a shaft retaining ring, and the pressing block 8 is connected to the lower end of the lead screw 2 by the shaft retaining ring.

[0026] In this embodiment, the pressing block 8 is connected to the lower end of the lead screw 2 by the shaft retaining ring, thereby being able to limit the axial movement of the pressing block 8, so that the pressing block 8 will not have axial deviation and cause the situation that the external grinding tank cannot be pressed tightly.

[0027] As Figure 1 shown, a handle 1 is fixedly connected to the upper end of the lead screw 2.

[0028] In this embodiment, by fixedly connecting the handle 1 to the upper end of the lead screw 2, it greatly facilitates the operator to rotate the lead screw 2, reduces the labor intensity of the operator to a certain extent, and improves the work efficiency.

[0029] It should be noted that the content not described in detail in this specification belongs to the prior art well known to those skilled in the art. The above is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the application shall be included in the protection scope of the present application.

Claims

1. A novel planetary ball mill grinding jar pressing and anti-loosening device, characterized in that: The invention comprises a screw rod (2) having an external thread, the lower end of the screw rod (2) being connected to a pressure block (8), a cross beam (6) having an internal thread and located on the upper side of the pressure block (8) being threadedly sleeved on the screw rod (2), a bottom plate (5) being fixedly connected to the top surface of the cross beam (6), a ratchet seat (4) being fixedly connected to the bottom plate (5) and forming a first cavity with the bottom plate (5), a ratchet wheel (3) being movably sleeved on the screw rod (2) being provided in the first cavity, and a recessed groove (6) being vertically provided on the screw rod (2) A ratchet (3) is provided with a protrusion matching the groove, a latch sleeve (13) is fixedly connected to one side of the ratchet seat (4) and forms a second cavity with the ratchet seat (4), an L-shaped notch (16) is opened on the latch sleeve (13), a latch shaft (9) is arranged in the second cavity, one end of the latch shaft (9) is slidably connected to the L-shaped notch (16), and the other end of the latch shaft (9) is sleeved with a spring (10) for inserting the head of the latch shaft (9) into the ratchet (3).

2. The novel planetary ball mill grinding jar pressing and anti-loosening device according to claim 1 is characterized in that: One end of the spring (10) away from the ratchet (3) abuts against the inner end surface of the latch sleeve (13), and the other end of the spring (10) abuts against the shoulder of the latch shaft (9).

3. The novel planetary ball mill grinding jar pressing and anti-loosening device according to claim 1 is characterized in that: It also comprises a first connecting screw (7), and the base plate (5) is fixed on the crossbeam (6) by means of the first connecting screw (7).

4. The novel planetary ball mill grinding jar pressing and anti-loosening device according to claim 1 is characterized in that: It also comprises a second connecting screw (14), and the latch sleeve (13) is fixed to one side of the ratchet seat (4) by the second connecting screw (14).

5. The novel planetary ball mill grinding jar pressing and anti-loosening device according to claim 1 is characterized in that: It also comprises a third connecting screw (15), and the ratchet seat (4) is fixed on the base plate (5) via the third connecting screw (15).

6. The novel planetary ball mill grinding jar pressing and anti-loosening device according to claim 1 is characterized in that: It also includes a shaft clamping ring, and the pressure block (8) is connected to the lower end of the screw rod (2) via the shaft clamping ring.

7. The novel planetary ball mill grinding jar pressing and anti-loosening device according to claim 1 is characterized in that: The upper end of the screw rod (2) is fixedly connected to a handle (1).

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