Anti-reverse connection device and mixing tank using the same

Abstract

The utility model discloses a kind of anti-reverse connecting device and stirring barrel using the device, including power device, belt pulley, main shaft, bearing seat support, impeller and stirring barrel, connecting device is set on main shaft, its both ends are connected driving shaft and passive axle respectively, the connecting device includes: shaft coupling assembly, shaft coupling assembly includes first shaft coupling, second shaft coupling and third shaft coupling, first shaft coupling, second shaft coupling and third shaft coupling are mutually engaged when driving shaft positive rotation, mutually separate when driving shaft reverses;Limiting component, limiting component includes first flange plate and second flange plate, connecting bolt, spring and pressure regulating nut, first flange plate is sleeved on first shaft coupling, second flange plate is sleeved on third shaft coupling;The connecting bolt is several, sequentially through second flange plate, first flange plate and spring and is connected with pressure regulating nut, the displacement amount generated when engaging and disengaging between shaft coupling assembly is matched by the elastic force of spring.

Description

Technical Field

[0001] This utility model relates to the technical field of mining mixing equipment, and in particular to an anti-reverse connection device and a mixing tank using the device. Background Technology

[0002] Agitator tanks, as mixing or fermentation equipment, are widely used in industries such as mineral processing plants, building material factories, and chemical plants. Their main purpose is to mix liquid solutions, ensuring thorough mixing of two or more solutions. In mineral processing plants, agitator tanks are primarily used to mix mineral processing reagents, lime powder, and diluent water. The centrifugal force generated during impeller rotation draws the slurry from the pump feed pipe into the agitator tank. Mineral processing reagents are then added to the tank, and the impeller agitation ensures thorough contact between the slurry and the reagents, facilitating faster flotation of roughage and concentrate in the flotation cell. During daily use, electrical wiring errors or control motor program malfunctions can cause the mixing tank control motor to reverse. The motor drives the mixing tank main shaft to reverse via a V-belt. The impeller connected to the main shaft is threaded. In the event of reverse rotation, the impeller will loosen and eventually separate from the main shaft. In severe cases, it may come into contact with the pump feed pipe below the impeller, causing the main shaft to deform and rendering the mixing tank ineffective. Production must be stopped and the machine shut down. Operators must enter the mixing tank to install the impeller back onto the main shaft or repair or replace the main shaft to restore normal operation.

[0003] A search revealed that Chinese utility model patent CN219942575U discloses a single-shaft mixer that uses a first gear and a second gear to link the mixing shaft and the sleeve rod, but it fails to solve the technical drawback of the impeller falling off during the reverse rotation of the mixing shaft.

[0004] In view of the design defects and shortcomings of the above-mentioned background technology, such as the impeller falling off due to main shaft reversal and the main shaft deformation, it is necessary to develop an anti-reversal connection device, which is the key to solving the above technical problems. Summary of the Invention

[0005] To address the shortcomings in the aforementioned background technology, this utility model has made improvements and innovations, aiming to provide an anti-reverse connection device and a mixing tank using the device. By setting a coupling assembly, the main shaft is divided into a driving shaft and a driven shaft, and the driven shaft is connected by the coupling assembly. Through the matching of convex and concave teeth, the coupling assemblies mesh with each other during the forward rotation of the driving shaft, driving the driven shaft to rotate, thereby driving the impeller to rotate. When the driving shaft reverses, the coupling assemblies disengage, the driving shaft idles, and cannot drive the driven shaft, thus preventing the impeller from falling off and the main shaft from deforming.

[0006] By setting a limiting component, a spring applies force to the flange, causing the first flange to move closer to the second flange, thus compressing and longitudinally limiting the coupling assembly. When reverse rotation occurs, the coupling assembly disengages, and the resulting reaction force compresses the spring towards the drive shaft, increasing the gap between the first and second flanges and providing space for the drive shaft to idle. When rotating forward again, the force applied by the spring to the flange causes the first and second flanges to compress the coupling assembly between them, restoring the coupling assembly to its meshing state and enabling normal operation.

[0007] Specifically, this utility model is implemented as follows:

[0008] An anti-reverse connection device is disposed between a drive shaft and a driven shaft, the anti-reverse connection device comprising:

[0009] The coupling assembly includes a first coupling, a second coupling, and a third coupling. One end of the first coupling is connected to the drive shaft, and the other end meshes with one end of the second coupling. The other end of the second coupling meshes with one end of the third coupling. The other end of the third coupling is connected to the driven shaft, and is used to link the drive shaft and the driven shaft when rotating forward, and to disengage the coupling assembly when rotating in reverse.

[0010] The limiting assembly includes a flange, connecting bolts, a spring, and a pressure adjusting nut. The flange includes a first flange and a second flange. The first flange is fitted onto a first coupling, and the second flange is fitted onto a third coupling. Several connecting bolts pass through the second flange, the first flange, and the spring in sequence and are connected to the pressure adjusting nut. The spring force matches the displacement generated when the coupling assemblies engage and disengage.

[0011] Preferably, the distance from the openings on the first and second flanges to the center is greater than the radius of the coupling assembly, and the connecting bolts pass through the second flange, the first flange and the spring in sequence before being connected to the pressure adjusting nut.

[0012] Preferably, the first coupling includes:

[0013] The first connecting seat is a tubular structure that matches the end of the drive shaft. Its inner wall is provided with a groove that matches the protrusion on the side wall of the drive shaft. It is sleeved on the drive shaft and is limited by the engagement between the protrusion and the groove. The side wall of the first connecting seat is sleeved with a first flange.

[0014] The first tooth consists of several right-angled triangular tooth-like protrusions that mesh with the second coupling.

[0015] Preferably, the second coupling includes:

[0016] The first concave tooth is a number of grooves that match the first convex tooth;

[0017] The second tooth consists of several right-angled triangular tooth-like structures that are staggered from the first tooth and mesh with the third coupling.

[0018] Preferably, the third coupling includes:

[0019] The second concave tooth consists of several grooves that match the second convex tooth;

[0020] The second connecting seat is a tubular structure that matches the end of the driven shaft. Its inner wall is provided with a groove that matches the protrusion on the side wall of the driven shaft. It is sleeved on the driven shaft and is limited by the engagement between the protrusion and the groove. The second connecting seat has a second flange sleeved on its side wall.

[0021] During the forward rotation of the drive shaft, the right-angled end face of the first convex tooth is in close contact with the right-angled end face of the first concave tooth, and the right-angled end face of the second convex tooth is in close contact with the right-angled end face of the second concave tooth, causing the first coupling to drive the second coupling to rotate, and in turn, to drive the third coupling to rotate. During the reverse rotation of the drive shaft, the first convex tooth slides out along the inclined end face of the first concave tooth, and the second convex tooth slides out along the inclined end face of the second concave tooth, causing the first coupling, the second coupling, and the third coupling to disengage, and in turn, causing the drive shaft and the driven shaft to disengage.

[0022] Preferably, the bearing housing support includes:

[0023] The support body is fitted onto the drive shaft. Bearings are installed inside both ends of the support body and are fixed inside the support body by bearing caps. A mounting plate is provided on the side wall of the support body. The mounting plate is bolted to one end of a symmetrically arranged I-beam. The other end of the I-beam is welded to the top of the mixing tank. The I-beam increases the longitudinal height and fixes the drive shaft.

[0024] Preferably, the support body also includes:

[0025] The reinforcing component, which is a triangular structure, is located at the connection between the end face of the platform and the side wall of the main body of the support frame to increase the stability of the platform.

[0026] Preferably, the first coupling further includes:

[0027] The first connector is disposed in a pre-set groove in the middle of the first protruding tooth. After passing through the first connector with a bolt, it is connected to the drive shaft to enhance the fixing effect.

[0028] Preferably, the third coupling further includes:

[0029] The second connector is set in a pre-set groove in the middle of the second tooth. After the bolt passes through the second connector, it is connected to the passive shaft to enhance the fixing effect.

[0030] A mixing tank using an anti-reverse connection device includes:

[0031] The power unit's output end is connected to a pulley via a belt.

[0032] The pulley has its end connected to the main shaft.

[0033] The spindle has the anti-reverse connection device in the middle, which divides the spindle into a driving spindle and a driven spindle.

[0034] The bearing housing bracket is fitted onto the main shaft, allowing the main shaft to rest on the mixing tank.

[0035] Impeller, the impeller is threaded to the end of the main shaft;

[0036] The pump feed pipe has one end located below the impeller and the other end passing through the side wall of the mixing tank and sealingly connected to the side wall of the mixing tank.

[0037] Working principle: The anti-reverse connection device with the above-described design has the following problems in its use in the background technology:

[0038] Because the impeller 5 is threadedly connected to the main shaft 3, the impeller 5 is prone to detachment when the main shaft 3 reverses. Furthermore, the loose impeller 5 contacts the pump feed pipe 7, causing deformation of the main shaft 3. To address these issues, this invention divides the main shaft 3 into a drive shaft 31 and a driven shaft 32. A bearing seat bracket 4 is fitted onto the side wall of the drive shaft 31, and a connecting device 1 is installed between the drive shaft 31 and the driven shaft 32. A mounting plate 411 on the side wall of the bracket body 41 connects to an I-beam, which is then attached to the mixing tank 6. The mixing tank 6 and the I-beam are welded together to increase overall stability. Bearings at both ends of the bracket body 41 limit the drive shaft 31 and reduce friction, making the rotation of the drive shaft 31 smoother. During forward rotation, the pulley 2 drives the drive shaft 31 to rotate forward. The operator adjusts the pressure adjusting nut 18, causing it to press the spring 17 towards the driven shaft 32. The spring force of the spring 17 acts on the first... On the flange 14, the first flange 14 is moved to the side of the second flange 15, and together they clamp the coupling assembly between the two, so that the coupling assembly meshes with each other. At this time, the drive shaft 31 rotates and drives the first coupling 11 to rotate. The right-angle end face of the first convex tooth 112 is in close contact with the right-angle end face of the first concave tooth 121, thereby driving the second coupling 12 to rotate. The right-angle end face of the second convex tooth 122 is in close contact with the right-angle end face of the second concave tooth 131, thereby driving the third coupling 13 to rotate, driving the driven shaft 32 to rotate, and then driving the impeller 5 to rotate. The impeller 5 rotates at high speed, forming a low-pressure zone in the center of the mixing tank 6, creating a pressure difference and forming a suction force towards the center. Since the distance between the impeller 5 and the pump feed pipe 7 is 8mm-15mm, the slurry is sucked out from the pump feed pipe 7, and the mineral processing agent is added from the top of the mixing tank 6. Under the action of the impeller 5, the slurry and the mineral processing agent are fully mixed evenly.

[0039] During reverse rotation, the coupling components disengage. In this process, the first convex tooth 112 and the second convex tooth 122 slide out along the inclined end face of the first concave tooth 121 and the second concave tooth 131, respectively. At this time, after the first coupling 11 slides out, it generates a displacement towards the drive shaft 31. After the first coupling 11 slides out, it drives the first flange 14 to move towards the drive shaft 31 and squeezes the spring 17, providing space for the idling of the drive shaft 31, disconnecting the connection with the driven shaft 32, and preventing the impeller 5 from loosening and falling off or the main shaft 3 from deforming during reverse rotation.

[0040] When the operator restores the equipment to normal rotation after maintenance, the first convex tooth 112 and the second convex tooth 122 slide into and engage along the inclined end face of the first concave tooth 121 and the second concave tooth 131, respectively. At this time, the spring 17 releases elastic potential energy and acts on the first flange 14, causing the first flange 14 to move towards the second flange 15, clamping the coupling assembly and making the coupling assembly tightly meshed. This drives the driven shaft 32, which in turn drives the impeller 5 to rotate, stirring the solution in the mixing tank 6.

[0041] Compared with the prior art, the beneficial effects of this utility model are:

[0042] 1. This utility model, by setting up a coupling assembly, ensures that during the forward rotation of the drive shaft, the first coupling, the second coupling, and the third coupling mesh with each other, causing the drive shaft to drive the driven shaft to rotate, and thus driving the impeller to rotate; during the reverse rotation, the first coupling, the second coupling, and the third coupling disengage from each other, and the drive shaft drives the first coupling to rotate freely, preventing the impeller from falling off and the main shaft from deforming due to reverse rotation;

[0043] 2. This utility model, by setting a right-angled triangular tooth structure with convex teeth and matching concave teeth, ensures that during the forward rotation of the drive shaft, the right-angled end face of the convex teeth is in close contact with the right-angled end face of the concave teeth, causing the first coupling to drive the second coupling to rotate, and the second coupling to drive the third coupling to rotate, thereby driving the driven shaft to rotate; during the reverse rotation, the convex teeth slide out along the inclined end face of the concave teeth, causing the coupling components to disengage and the drive shaft to idle.

[0044] 3. This utility model limits the coupling assembly by setting a limiting component, using flanges and connecting bolts, and adjusting the spring force between the spring and the first flange by adjusting the pressure adjusting nut. During the forward rotation of the drive shaft, the first and second flanges squeeze the coupling assembly, making the meshing tighter. During the reverse rotation, the first coupling disengages from the second coupling and moves to the drive shaft side, squeezing the spring and providing space for the drive shaft to idle, thus disconnecting the connection with the driven shaft.

[0045] 4. This utility model provides support for the stirring shaft by setting a bearing seat bracket and setting a mounting plate on the side wall of the bracket body. The mounting plate is connected to the I-beam and then welded to the mixing tank, and the I-beam increases the overall stability. By setting bearings at both ends of the bracket body and limiting them with bearing caps, the friction during the rotation of the drive shaft is reduced, making the rotation of the drive shaft smoother.

[0046] 5. This utility model provides a first connecting seat and a second connecting seat, and provides grooves on the inner walls of the first connecting seat and the second connecting seat that match the protrusions on the side walls of the active shaft and the passive shaft, for axial positioning of the connecting seat during rotation. Attached Figure Description

[0047] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0048] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model.

[0049] Figure 2 This is a schematic diagram of the usage state of this utility model;

[0050] Figure 3 This is a perspective view of the utility model in use;

[0051] Figure 4 This is a schematic diagram showing the distance between the impeller 5 and the pump feed pipe 7 of this utility model;

[0052] Figure 5 This is a schematic diagram of the overall structure of this utility model;

[0053] Figure 6 This is a cross-sectional view of the present invention;

[0054] Figure 7 This is a schematic diagram of the overall exploded structure of this utility model;

[0055] Figure label:

[0056] 1-Connecting device, 11-First coupling, 12-Second coupling, 13-Third coupling, 14-First flange, 15-Second flange, 16-Connecting bolt, 17-Spring, 18-Adjusting nut, 111-First connecting seat, 112-First concave tooth, 113-First connecting piece, 121-First convex tooth, 122-Second convex tooth, 131-Second concave tooth, 132-Second connecting seat, 133-Second connecting piece;

[0057] 2-Pulley;

[0058] 3-Main spindle, 31-Active spindle, 32-Passive spindle;

[0059] 4-Bearing housing bracket, 41-Bracket body, 411-Approach plate, 412-Reinforcing member;

[0060] 5-Impeller;

[0061] 6- Mixing tank;

[0062] 7-Pump feed pipe. Detailed Implementation

[0063] To make the technical means, inventive features, and achieved objectives and effects of this utility model readily understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0064] Example 1

[0065] like Figure 1 An anti-reverse connection device is shown, disposed between the drive shaft 31 and the driven shaft 32, characterized in that the anti-reverse connection device comprises:

[0066] The coupling assembly includes a first coupling 11, a second coupling 12, and a third coupling 13. One end of the first coupling 11 is connected to the drive shaft 31, and the other end is engaged with one end of the second coupling 12. The other end of the second coupling 12 is engaged with one end of the third coupling 13. The other end of the third coupling 13 is connected to the driven shaft 32, which is used to link the drive shaft 31 and the driven shaft 32 when rotating forward, and to disengage the coupling assembly when rotating in reverse.

[0067] The limiting assembly includes a flange, connecting bolts 16, a spring 17, and a pressure adjusting nut 18. The flange includes a first flange 14 and a second flange 15. The first flange 14 is fitted onto the first coupling 11, and the second flange 15 is fitted onto the third coupling 13. Several connecting bolts 16 pass through the second flange 15, the first flange 14, and the spring 17 in sequence and are connected to the pressure adjusting nut 18. The elastic force of the spring 17 matches the displacement generated when the coupling assemblies mesh and disengage.

[0068] Furthermore, the distance from the openings on the first flange 14 and the second flange 15 to the center is greater than the radius of the coupling assembly. The connecting bolts 16 pass through the second flange 15, the first flange 14 and the spring 17 in sequence and are then connected to the pressure adjusting nut 18.

[0069] Furthermore, the first coupling 11 includes:

[0070] The first connecting seat 111 is a tubular structure that matches the end of the drive shaft 31. Its inner wall is provided with a groove that matches the protrusion on the side wall of the drive shaft 31. It is sleeved on the drive shaft 31 and is limited by the engagement between the protrusion and the groove. The first flange 14 is sleeved on the side wall of the first connecting seat 111.

[0071] The first tooth 112 is a series of right-angled triangular tooth-shaped protrusions that mesh with the second coupling 12.

[0072] Furthermore, the second coupling 12 includes:

[0073] The first concave tooth 121 is a plurality of grooves that match the first convex tooth 112;

[0074] The second tooth 122 is a series of right-angled triangular tooth-like protrusions that are staggered from the first tooth 112 and mesh with the third coupling 13.

[0075] Furthermore, the third coupling 13 includes:

[0076] The second concave tooth 131 is a number of grooves that match the second convex tooth 122;

[0077] The second connecting seat 132 is a tubular structure that matches the end of the passive shaft 32. Its inner wall is provided with a groove that matches the side wall protrusion of the passive shaft 32. It is sleeved on the passive shaft 32 and is limited by the engagement between the protrusion and the groove. The second connecting seat 132 is sleeved with a second flange 15 on its side wall.

[0078] During the forward rotation of the drive shaft 31, the right-angled end face of the first convex tooth 112 is in close contact with the right-angled end face of the first concave tooth 121, and the right-angled end face of the second convex tooth 122 is in close contact with the right-angled end face of the second concave tooth 131, causing the first coupling 11 to drive the second coupling 12 to rotate, and in turn, to drive the third coupling 13 to rotate. During the reverse rotation of the drive shaft, the first convex tooth 112 slides out along the inclined end face of the first concave tooth 121, and the second convex tooth 122 slides out along the inclined end face of the second concave tooth 131, causing the first coupling 11, the second coupling 12, and the third coupling 13 to disengage, and in turn, causing the drive shaft 31 and the driven shaft 32 to disengage.

[0079] Before using the anti-reverse connection device of the above-described design structure, the operator places the first flange 14 on the first connecting seat 111 at the end of the first coupling 11, and the second flange 15 on the second connecting seat 132 at the end of the third coupling 13. The first connecting seat 111 is connected to the end of the drive shaft 31, and the second connecting seat 132 at the end of the third coupling 13 is connected to the end of the driven shaft 32. At this time, the pre-set protrusion on the side wall of the drive shaft 31 engages with the groove on the inner wall of the first connecting seat 111, and the pre-set protrusion on the side wall of the driven shaft 32 engages with the groove on the inner wall of the second connecting seat 132. This connects the first coupling 11 and the second coupling 13. The first coupling 12 and the third coupling 13 mesh with each other, causing the first convex tooth 112 and the first concave tooth 121 to mesh, and the second convex tooth 122 and the second concave tooth 131 to mesh. Several connecting bolts 16 are sequentially passed through the second flange 15, the first flange 14, and the spring 17, and then connected and fixed by adjusting nuts 18. This longitudinally limits the coupling assembly formed by the first coupling 11, the second coupling 12, and the third coupling 13 between the first flange 14 and the second flange 16, and laterally limits the coupling assembly using the connecting bolts 16. At this time, the connecting bolts 16 do not contact the side wall of the coupling assembly. Figure 1 As shown, the assembly of this utility model is now complete.

[0080] During use, the operator adjusts the pressure adjusting nut 18 so that the spring 17 provides elastic force to the first flange 14 on the driven shaft 32 side, ensuring tight engagement between the coupling components. At this time, it is necessary to ensure that the coupling components can disengage by compressing the spring when reversed. Then, the power equipment is turned on. The power unit is connected to the pulley 2 via a belt, driving the pulley 2 to rotate. The rotation of the pulley 2 drives the drive shaft 31 to rotate. Because the protrusion on the side wall of the drive shaft 31 engages with the internal groove of the first connecting seat 111, the drive shaft 31 drives the first coupling 11 to rotate. Figure 5 As shown, during forward rotation, after adjusting the pressure adjusting nut 18, the pressure adjusting nut 18 presses the spring 17 towards the driven shaft 32. The elastic force of the spring 17 acts on the first flange 14, causing the first flange 14 and the second flange 15 to clamp the coupling assembly, making the coupling assemblies mesh with each other. The rotation of the first coupling 11 drives the rotation of the second coupling 12. At this time, the right-angle end face of the first convex tooth 112 is in close contact with the right-angle end face of the first concave tooth 121. The second coupling 12 drives the rotation of the third coupling 13. At this time, the right-angle end face of the second convex tooth 122 is in close contact with the second concave tooth 13. 1. The right-angled end faces are in close contact. The second connecting seat 132 on the third coupling 13 engages with the pre-set protrusion on the side wall of the driven shaft 32 due to the inner wall groove. This causes the third coupling 13 to drive the driven shaft 32 to rotate, and the driven shaft 32 to drive the impeller 5 to rotate. The impeller 5 rotates at high speed, forming a low-pressure zone in the center of the mixing tank 6, creating a pressure difference and generating a suction force towards the center. Because the distance between the impeller 5 and the pump feed pipe 7 is 8mm-15mm, the slurry is drawn out from the pump feed pipe 7, and mineral processing reagents are added from above the mixing tank 6. Under the action of the impeller 5, the slurry and mineral processing reagents are fully and evenly mixed. Figure 3 As shown;

[0081] When the rotation is reversed, the coupling components disengage, and the first convex tooth 112 and the second convex tooth 122 slide out along the inclined sides of the first concave tooth 121 and the second concave tooth 131, respectively. At this time, after the first coupling 11 slides out, it generates a displacement towards the drive shaft 31. The first coupling 11 drives the first flange 14 to squeeze the spring 17 towards the drive shaft 31, disengaging from the second coupling 12, providing space for the drive shaft 31 to idle, and disconnecting the connection with the driven shaft 32. At this time, the impeller 5 does not contact the pump feed pipe 7, preventing the impeller 5 from becoming loose and falling off or the main shaft 3 from deforming during the rotation.

[0082] When the operator restores the equipment to normal rotation after maintenance, the first convex tooth 112 and the second convex tooth 122 slide into and engage along the inclined end face of the first concave tooth 121 and the second concave tooth 131, respectively. At this time, the spring 17 releases elastic potential energy and acts on the first flange 14, causing the first flange 14 to move towards the second flange 15, clamping the coupling assembly and making the coupling assembly tightly meshed. This drives the driven shaft 32, which in turn drives the impeller 5 to rotate, stirring the solution in the mixing tank 6.

[0083] Example 2

[0084] This embodiment 2 is a mixing tank using the anti-reverse connection device of embodiment 1, including: a power unit, the output end of which is connected to a pulley 2 via a belt, the end of which is connected to a main shaft 3, an anti-reverse connection device in the middle of the main shaft 3, which divides the main shaft 3 into a drive shaft 31 and a driven shaft 32, a bearing seat bracket 4 is sleeved on the main shaft 3, so that the main shaft 3 overlaps the mixing tank 6, an impeller 5 is threadedly connected to the end of the main shaft 3, and a pumping pipe 7 is located at one end below the impeller 5 and the other end passes through the side wall of the mixing tank 6 and is sealed to the side wall of the mixing tank 6.

[0085] Specifically, one end of the pump feed pipe 7 is located below the impeller 5, with a distance of H between it and the impeller 5, where H ranges from 8mm to 15mm. The other end passes through the side wall of the mixing tank 6 and is sealed to the side wall of the mixing tank 6.

[0086] In this embodiment, the drive shaft 31 is connected to the passive shaft 32 through an anti-reverse connection device. When rotating forward, the drive shaft 31 drives the passive shaft 32 to rotate, which in turn drives the impeller 5 to rotate. The impeller 5 rotates at high speed, forming a low-pressure zone in the center of the mixing tank 6, creating a pressure difference and generating a suction force towards the center. Since the distance between the impeller 5 and the pump feed pipe 7 is 8mm-15mm, the slurry is drawn out from the pump feed pipe 7, and mineral processing reagents are added from above the mixing tank 6. Under the action of the impeller 5, the slurry and mineral processing reagents are fully and evenly mixed.

[0087] When the reverse direction is reversed, the drive shaft 31 reverses and disconnects from the passive shaft through the anti-reverse connection device of Embodiment 1. The drive shaft 31 rotates on its own and the impeller 5 does not contact the pump feed pipe 7, preventing the impeller 5 from becoming loose and falling off or the main shaft 3 from deforming when the reverse direction is reversed.

[0088] Example 3

[0089] This embodiment 3 is the same as embodiment 1, except that, as Figure 5 As shown, the bearing housing bracket 4 includes a bracket body 41, which is sleeved on the drive shaft 31. Bearings are installed inside both ends of the bracket body 41 and are fixed inside the bracket body 41 by bearing caps. A mounting plate 411 is provided on the side wall of the bracket body 41. The mounting plate 411 is bolted to one end face of a symmetrically arranged I-beam. The other end face of the I-beam is welded to the top of the mixing tank. The I-beam increases the longitudinal height and fixes the drive shaft 31.

[0090] Furthermore, the support body 41 also includes a reinforcing member 412, which is a triangular structure and is located at the connection between the end face of the platform 411 and the side wall of the support body 41 to increase the stability of the platform 411.

[0091] In this embodiment, the operator places the bearing bracket 4 on the side wall of the drive shaft 31. The bearings at both ends of the bracket body 41 limit the drive shaft 31 and reduce friction during rotation, making the drive shaft 31 rotate more smoothly. The mounting plate 411 on the side wall of the bracket body 41 is connected to the I-beam and welded to the mixing tank 6. The I-beam increases the longitudinal height and fixes the drive shaft 31, preventing the impeller 5 and the pump pipe 7 at the bottom of the mixing tank 6 from causing deformation and damage to the main shaft.

[0092] In this embodiment, a reinforcing member 412 is provided, such as Figure 5 As shown, the triangular structure of the reinforcing member 412 increases the connection strength between the mounting plate 411 and the side wall of the support body 41, thereby improving the stability of the mounting plate 411 in use.

[0093] Example 4

[0094] This embodiment 4 is the same as embodiment 1, except that, as Figure 7 As shown, the first coupling 11 also includes a first connecting member 113, which is disposed in a pre-set groove in the middle of the first tooth 112. After a bolt passes through the first connecting member 113, it is connected to the drive shaft 31 to enhance the fixing effect.

[0095] Furthermore, the third coupling 13 also includes:

[0096] The second connector 133 is set in a pre-set groove in the middle of the second tooth 131. After passing through the second connector 133 with a bolt, it is connected to the passive shaft 32 to enhance the fixing effect.

[0097] In this embodiment, by setting the first connecting member 113, the connection between the first coupling 11 and the drive shaft 31 is made more secure. After the first connecting member 113 is embedded in the groove preset in the middle of the first tooth 112, it is connected and reinforced with bolts to the end of the drive shaft 31 to prevent the first coupling 11 and the drive shaft 31 from loosening and disengaging during rotation, which would cause the drive shaft 31 and the driven shaft 32 to disconnect.

[0098] By setting the second connector 133, the connection between the third coupling 13 and the passive shaft 32 is made more secure. After the second connector 133 is embedded in the pre-set groove in the middle of the second tooth 131, it is connected and reinforced with bolts to the end of the passive shaft 32 to prevent the third coupling 13 and the passive shaft 32 from loosening and disengaging during rotation, which would cause the active shaft 31 and the passive shaft 32 to disconnect.

[0099] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. An anti-reverse connection device, disposed between a drive shaft (31) and a driven shaft (32), characterized in that, The anti-reverse connection device includes: The coupling assembly includes a first coupling (11), a second coupling (12), and a third coupling (13). One end of the first coupling (11) is connected to the drive shaft (31), and the other end is engaged with one end of the second coupling (12). The other end of the second coupling (12) is engaged with one end of the third coupling (13). The other end of the third coupling (13) is connected to the driven shaft (32) for linkage between the drive shaft (31) and the driven shaft (32) during forward rotation, and for disengagement between the coupling assemblies during reverse rotation. The limiting assembly includes a flange, connecting bolts (16), a spring (17), and a pressure adjusting nut (18). The flange includes a first flange (14) and a second flange (15). The first flange (14) is fitted onto the first coupling (11), and the second flange (15) is fitted onto the third coupling (13). There are several connecting bolts (16), which pass through the second flange (15), the first flange (14), and the spring (17) in sequence and are connected to the pressure adjusting nut (18). The elastic force of the spring (17) matches the displacement generated when the coupling assemblies mesh and disengage.

2. The anti-reverse connection device according to claim 1, characterized in that, The distance from the opening on the first flange (14) and the second flange (15) to the center is greater than the radius of the coupling assembly. The connecting bolt (16) passes through the second flange (15), the first flange (14) and the spring (17) in sequence and is then connected to the pressure adjusting nut (18).

3. The anti-reverse connection device according to claim 1, characterized in that, The first coupling (11) includes: The first connecting seat (111) is a tubular structure that matches the end of the drive shaft (31). Its inner wall is provided with a groove that matches the protrusion on the side wall of the drive shaft (31). It is fitted onto the drive shaft (31) and is limited by the engagement between the protrusion and the groove. The first flange (14) is fitted onto the side wall of the first connecting seat (111). The first protruding tooth (112) is a series of right-angled triangular tooth-like protrusions that mesh with the second coupling (12).

4. The anti-reverse connection device according to claim 3, characterized in that, The second coupling (12) includes: The first concave tooth (121) is a number of grooves that match the first convex tooth (112); The second protruding tooth (122) is a series of right-angled triangular tooth-like protrusions that are staggered from the first protruding tooth (112) and mesh with the third coupling (13).

5. The anti-reverse connection device according to claim 4, characterized in that, The third coupling (13) includes: The second concave tooth (131) is a number of grooves that match the second convex tooth (122); The second connecting seat (132) is a tubular structure that matches the end of the passive shaft (32). Its inner wall is provided with a groove that matches the side wall protrusion of the passive shaft (32). It is fitted onto the passive shaft (32) and is limited by the engagement between the protrusion and the groove. The second connecting seat (132) is fitted with a second flange (15) on its side wall. During the forward rotation of the drive shaft (31), the right-angle end face of the first convex tooth (112) is in close contact with the right-angle end face of the first concave tooth (121), and the right-angle end face of the second convex tooth (122) is in close contact with the right-angle end face of the second concave tooth (131), causing the first coupling (11) to drive the second coupling (12) to rotate, and then drive the third coupling (13) to rotate; during the reverse rotation of the drive shaft, the first convex tooth (112) slides out along the inclined end face of the first concave tooth (121), and the second convex tooth (122) slides out along the inclined end face of the second concave tooth (131), causing the first coupling (11), the second coupling (12) and the third coupling (13) to separate, and then causing the drive shaft (31) and the driven shaft (32) to separate.

6. The anti-reverse connection device according to claim 3, characterized in that, The first coupling (11) further includes: The first connector (113) is set in the groove in the middle of the first tooth (112). After the bolt passes through the first connector (113), it is connected to the drive shaft (31) to enhance the fixing effect.

7. The anti-reverse connection device according to claim 5, characterized in that, The third coupling (13) also includes: The second connector (133) is set in the groove in the middle of the second tooth (131). After the bolt passes through the second connector (133), it is connected to the passive shaft (32) to enhance the fixing effect.

8. A mixing tank using the anti-reverse connection device according to claim 1, characterized in that, include: The power unit output end is connected to the pulley (2) via a belt; Pulley (2), the end of pulley (2) is connected to the main shaft (3); The main spindle (3) is provided with the anti-reverse connection device in the middle, which divides the main spindle (3) into a driving spindle (31) and a passive spindle (32). Bearing seat bracket (4) is sleeved on the main shaft (3) so that the main shaft (3) overlaps the mixing tank (6); Impeller (5), impeller (5) is threaded to the end of main shaft (3); Pump material pipe (7) is located at one end below the impeller (5) and the other end passes through the side wall of the mixing tank (6) and is sealed to the side wall of the mixing tank (6).

9. A mixing tank according to claim 8, characterized in that, The bearing housing support (4) includes: The support body (41) is fitted onto the drive shaft (31). Bearings are installed inside both ends of the support body (41), and the bearings are fixed inside the support body (41) by bearing caps. A mounting plate (411) is provided on the side wall of the support body (41). The mounting plate (411) is connected to one end face of the symmetrically arranged I-beams by bolts. The other end face of the I-beams is welded to the top of the mixing tank. The longitudinal height is increased by the I-beams and the drive shaft (31) is fixed.

10. A mixing tank according to claim 9, characterized in that, The support body (41) also includes: The reinforcing member (412) is a triangular structure and is located at the connection between the end face of the platform (411) and the side wall of the support body (41) to increase the stability of the platform (411).

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