Stirring body and wet-mixing stirring device

Abstract

The utility model relates to the field of diamond processing, in particular to a stirring body and a wet mixing stirring device. The stirring body disclosed by the utility model is used for solving the technical problem that the stirring body of the existing stirring device is easy to damage due to larger resistance when stirring mixed slurry of diamond micro powder and a metal binder. The wet mixing and stirring device is used for solving the technical problem that the mixing efficiency is low when an existing stirring device is used for stirring mixed slurry of diamond micro powder and a metal binder. The stirring body comprises a stirring shaft used for being in transmission connection with a driving unit, and stirring blades are arranged at the end, used for being in contact with slurry, of the stirring shaft. And the extension direction of the blade bodies of the stirring blades is consistent with the axial direction of the stirring shaft. Overflowing holes are formed in the stirring blades, and the lower ends of the stirring blades are fixedly connected with the lower end of the stirring shaft.

Description

Technical Field

[0001] The utility model belongs to the field of diamond processing, and particularly relates to a stirring body and a wet mixing and stirring device. Background Technique

[0002] Polycrystalline diamond compact (PDC) is a kind of product formed by sintering diamond micropowder under the action of a catalyst at ultra-high temperature and high pressure. In existing polycrystalline diamond compact products, some products are sintered from diamond micropowders of two or more different particle sizes plus a metal binder. If there are problems such as uneven distribution of diamond particles of different sizes and serious agglomeration of small-particle diamonds in the slurry of polycrystalline diamond compacts before sintering, the diamond distribution on the finished polycrystalline diamond compacts will not present the required network structure, and thus the comprehensive mechanical properties of the finished polycrystalline diamond compacts will be far lower than the qualified standard. At the same time, the consistency of the polycrystalline diamond compacts of the same batch produced from this slurry will also be poor. In addition, the metal binder will correspondingly agglomerate locally in the slurry, resulting in the phenomenon of local metal enrichment on the finished polycrystalline diamond compacts. This will reduce the surface quality of the finished polycrystalline diamond compacts and does not meet the processing requirements for further processing.

[0003] Therefore, before sintering and forming polycrystalline diamond compacts, the raw materials need to be evenly mixed through a mixing process. During mixing, diamond micropowder and metal binder are simultaneously put into a liquid dispersant and then transferred together into a stirring device for stirring evenly. In existing stirring devices, such as the stirring and pouring device disclosed in the Chinese utility model patent with the authorization announcement number CN219168342U, the stirring body for stirring the slurry on the stirring mechanism includes a stirring shaft and several stirring rods horizontally extending from the end of the stirring shaft. The contact area between this stirring body and the slurry is limited, so the small-particle diamonds and agglomerated metal binder in the slurry cannot be fully dispersed in a short time. In actual processing, the stirring device with this stirring body needs a longer time to stir the slurry to a usable level, and the mixing efficiency is low.

[0004] Regarding the above problems, the stirrer for preparing emulsion disclosed in the Chinese invention application with the application publication number CN108786559A provides a solution. The upper stirring blades are arranged in the same direction as the stirring rod, so a larger stirring area can be provided to improve the stirring efficiency. However, for the above structure used to prepare emulsion, the stirring blades will not bear a large acting force during stirring. Since the stirring blades are cantilevered and arranged on the lower side of the stirring rod, the stirring blades are prone to breakage or deformation when subjected to a large resistance; and the small particle diamonds and agglomerated metal binders in the above slurry are mainly deposited at the bottom of the slurry and will exert a great resistance on the stirring blades during stirring. Therefore, when this structure is applied to the slurry mixing operation of polycrystalline diamond compacts, it is extremely easy to be damaged and cannot effectively solve the above problems encountered during the slurry mixing operation of polycrystalline diamond compacts. Utility Model Content

[0005] The purpose of the present utility model is to provide a stirring body to solve the technical problem that the stirring body of the existing stirring device is prone to damage due to a large resistance when stirring the mixed slurry of diamond micropowder and metal binder. The purpose of the present utility model is to provide a wet mixing stirring device to solve the technical problem of low mixing efficiency of the existing stirring device when stirring the mixed slurry of diamond micropowder and metal binder.

[0006] The following technical solutions are adopted in the present utility model:

[0007] A stirring body includes a stirring shaft for driving connection with a driving unit; one end of the stirring shaft for contacting the slurry is provided with stirring blades; the extending direction of the blade body of the stirring blades is consistent with the axial direction of the stirring shaft; through holes are provided on the stirring blades, and a fixed connection is provided between the lower end of the stirring blades and the lower end of the stirring shaft.

[0008] Further, the stirring blades and the stirring shaft are connected through a connecting part; the stirring blades, the connecting part and the stirring shaft are integrally formed.

[0009] Further, the connecting part is a sheet-shaped connecting part, and its upper side has a transition inclined surface inclined towards the stirring shaft, and the included angle between the transition inclined surface and the stirring shaft is an obtuse angle.

[0010] Further, a flow-through gap is provided between the stirring blades and the stirring shaft.

[0011] Further, the stirring blades are rectangular; the through holes are rectangular holes uniformly distributed along the width direction of the stirring blades.

[0012] Beneficial effects: The stirring body of the existing stirring device is improved in the present utility model. The stirring body in the present utility model includes a stirring shaft for driving connection with a driving unit. One end of the stirring shaft for contacting the slurry is provided with stirring blades; and the extending direction of the blade body of the stirring blades is consistent with the axial direction of the stirring shaft, so that the entire blade surface of the stirring blades can be used to break up the agglomerated small particle diamond and agglomerated metal binder in the slurry. The stirring blades are provided with flow-through holes, so that during mixing, the agitation of the stirring blades will not cause excessive vortices in the slurry in the stirring tank, and the agglomerated small particle diamond and agglomerated metal binder in the slurry will not move greatly in the same direction as the stirring blades due to the vortices. At the same time, such a setting makes the liquid resistance on the stirring blades smaller, can adapt to higher rotation speeds, and ensures that the stirring blades can bring sufficient impact force to the agglomerated small particle diamond and agglomerated metal binder in the slurry during stirring to disperse them. The lower end of the stirring blade is fixedly connected to the lower end of the stirring shaft as a whole. Since the agglomerated small particle diamond and agglomerated metal binder in the slurry are heavier and usually deposited at the bottom of the container. And the lower end of the stirring blade is fixedly connected to the lower end of the stirring shaft, so that the end of the stirring body for contacting the slurry has greater structural strength and will not be deformed or damaged due to the resistance during stirring. Therefore, the above setting ensures the mixing efficiency and mixing effect of the stirring body during the mixing operation on the one hand, and also ensures the service life of the stirring body on the other hand, preventing its mixing efficiency during the mixing operation from being affected due to deformation or damage.

[0013] The wet mixing stirring device includes a stirring tank, a driving unit and a stirring body drivingly connected with the driving unit; the stirring body extends into the stirring tank to stir the slurry; the stirring body includes a stirring shaft for driving connection with the driving unit, one end of the stirring shaft for contacting the slurry is provided with stirring blades, and the extending direction of the blade body of the stirring blades is consistent with the axial direction of the stirring shaft; the stirring blades are provided with flow-through holes, and the lower end of the stirring blade is fixedly connected to the lower end of the stirring shaft.

[0014] Further, the stirring blade is connected to the stirring shaft through a connecting part; the stirring blade, the connecting part and the stirring shaft are integrally formed.

[0015] Further, the connecting part is a sheet-shaped connecting part, and its upper side has a transition inclined surface inclined towards the stirring shaft, and the included angle between the transition inclined surface and the stirring shaft is an obtuse angle.

[0016] Further, a flow-through gap is provided between the stirring blade and the stirring shaft.

[0017] Further, the stirring blade is rectangular; the flow-through holes are rectangular holes uniformly distributed along the width direction of the stirring blade.

[0018] Furthermore, an ultrasonic oscillation mechanism is provided at the lower end of the stirring tank for synchronously vibrating the stirring tank and the slurry during the stirring operation by ultrasonic waves.

[0019] Beneficial effects: The present utility model improves the existing stirring device and specifically proposes a wet mixing stirring device. The wet mixing stirring device of the present utility model includes a stirring tank, a driving unit, and a stirring body drivingly connected to the driving unit. The stirring body extends into the stirring tank to stir the slurry. The stirring body includes a stirring shaft for drivingly connecting with the driving unit. One end of the stirring shaft for contacting the slurry is provided with stirring blades; and the extending direction of the blade body of the stirring blades is consistent with the axial direction of the stirring shaft, so that the entire blade surface of the stirring blades can be used to disperse the piled-up small particle diamonds and agglomerated metal binders in the slurry. The stirring blades are provided with flow holes, so that during mixing, the agitation of the stirring blades will not cause excessive vortices in the slurry in the stirring tank, and the piled-up small particle diamonds and agglomerated metal binders in the slurry will not move greatly in the same direction as the stirring blades due to the vortices. At the same time, such a setting makes the liquid resistance received by the stirring blades smaller, can adapt to higher rotation speeds, and ensures that the stirring blades can bring sufficient impact force to the piled-up small particle diamonds and agglomerated metal binders in the slurry during stirring to disperse them. The lower end of the stirring blades is fixedly connected to the lower end of the stirring shaft integrally. Since the piled-up small particle diamonds and agglomerated metal binders in the slurry are heavier and usually deposited at the bottom of the container. And the lower end of the stirring blades is fixedly connected to the lower end of the stirring shaft, so that the end of the stirring body for contacting the slurry has greater structural strength and will not be deformed or damaged due to the resistance during stirring. Therefore, the above settings ensure the mixing efficiency and mixing effect of the stirring body during the mixing operation on the one hand, and also ensure the service life of the stirring body on the other hand, preventing its mixing efficiency during the mixing operation from being affected due to deformation or damage. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of an embodiment of the wet mixing stirring device of the present utility model;

[0021] Figure 2 is Figure 1 the schematic structural diagram of the stirring body in

[0022] The names of the components corresponding to the corresponding reference numerals in the drawings are: 1, driving unit; 2, protective cover; 3, mounting flange; 4, closing cover; 5, stirring shaft; 6, slurry; 7, stirring blades; 8, open tank body; 9, fixed bracket; 10, ultrasonic horn; 11, ultrasonic generator; 12, flow hole; 13, connecting part; 14, transition slope; 15, flow gap. Detailed Embodiments

[0023] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0024] The scheme principle of the wet mixing device described in the utility model is as follows:

[0025] A wet mixing device includes a mixing tank, a driving unit 1 and a mixing body connected to the driving unit 1. Figure 1 As shown. The stirring body extends into the stirring tank to stir the slurry 6. Compared with the prior art, the key point of the utility model is that it can be referred to Figure 2 As shown, the stirring body includes a stirring shaft 5 for transmission connection with the driving unit 1. A stirring blade 7 is provided at one end of the stirring shaft 5 for contacting the slurry 6; and the extending direction of the stirring blade 7 is consistent with the axial direction of the stirring shaft 5, so that the entire paddle surface of the stirring blade 7 can be used to break up the small diamond particles and agglomerated metal binder in the slurry 6.

[0026] The stirring blade 7 is provided with a flow hole 12 for the liquid dispersant of the slurry 6 to pass through. In this way, when mixing, the stirring of the stirring blade 7 will not cause the slurry 6 in the stirring tank to generate too large a vortex, so that the small diamond particles and agglomerated metal binders in the slurry 6 will not move in the same direction as the stirring blade 7 due to the vortex. At the same time, such a setting makes the liquid resistance on the stirring blade 7 smaller, and can adapt to a higher rotation speed, ensuring that the stirring blade 7 can bring enough impact force to the small diamond particles and agglomerated metal binders in the slurry 6 during stirring to disperse them. The lower end of the stirring blade 7 is fixedly connected to the lower end of the stirring shaft 5. Because the small diamond particles and agglomerated metal binders in the slurry 6 are heavier, they are usually deposited at the bottom of the container. The lower end of the stirring blade 7 is fixedly connected to the lower end of the stirring shaft 5, so that the end of the stirring body used to contact the slurry 6 has a greater structural strength and will not be deformed or damaged due to the resistance during stirring.

[0027] Therefore, the above arrangement ensures the mixing efficiency and mixing effect of the stirring body during the mixing operation on the one hand, and also ensures the useful life of the stirring body on the other hand, preventing it from affecting the mixing efficiency during the mixing operation due to deformation or damage.

[0028] Based on the above-mentioned principle, the embodiment 1 of the wet mixing device of the utility model is:

[0029] A wet mixing device includes a mixing tank, a driving unit 1 and a mixing body connected to the driving unit 1. One end of the mixing body extends into the mixing tank to stir the slurry 6. The structure can be referred to Figure 1 shown.

[0030] Mixing body can refer to Figure 2As shown, it includes a stirring shaft 5 that is drivingly connected to a driving unit 1. One end of the stirring shaft 5 that is used to contact the slurry 6 is provided with stirring blades 7; and the extending direction of the blade body of the stirring blade 7 is consistent with the axial direction of the stirring shaft 5, so that the entire blade surface of the stirring blade 7 can be used to break up the piled-up small particle diamonds and agglomerated metal binders in the slurry 6. The stirring blade 7 is provided with flow holes 12 for the liquid dispersant of the slurry 6 to pass through. The lower end of the stirring blade 7 is fixedly connected to the lower end of the stirring shaft 5 to ensure the structural strength of the end of the stirring body for stirring the slurry 6.

[0031] In this embodiment, the stirring blade 7 can be specifically provided with two pieces and are respectively arranged on both sides of the stirring shaft 5. Therefore, the two stirring blades 7 and the connecting part 13 substantially together form a larger straight surface stirring blade structure. During processing, the two stirring blades 7 can be processed synchronously, thus effectively reducing the processing cost and improving the processing efficiency. Of course, only a single stirring blade 7 can also be provided on one side of the stirring shaft 5; or three, four, five or even more stirring blades 7 can be evenly arranged on the circumferential side of the stirring shaft 5. The connecting part 13 is connected between the stirring blade 7 and the stirring shaft 5 at the position corresponding to the stirring blade 7. It should be noted that setting two stirring blades 7 on the stirring shaft 5 is the optimal solution selected for processing cost and mixing effect, which does not mean that only two stirring blades 7 can be provided on the stirring shaft 5.

[0032] The key point of this embodiment is that the stirring blade 7 and the stirring shaft 5 are connected through the connecting part 13, and the stirring blade 7, the connecting part 13 and the stirring shaft 5 are integrally formed. This can ensure that there is a strong connection strength between the stirring blade 7, the connecting part 13 and the stirring shaft 5, and thus it can be applicable to the mixing scenario with a greater stirring force. Of course, the stirring blade 7, the connecting part 13 and the stirring shaft 5 can also be fixedly connected into one body by welding or detachable connection. When the stirring blade 7, the connecting part 13 and the stirring shaft 5 are connected by a detachable connection method, the following settings can be adopted: Let the stirring blade 7 be provided with a protruding plate that extends in the same direction as the stirring blade 7, and a threaded hole is opened on the protruding plate; the connecting part 13 is provided with a groove for clamping and cooperating with the protruding plate, and a counterbore corresponding to the threaded hole is opened on the groove. During installation, the protruding plate of the stirring blade 7 is clamped into the groove of the connecting part 13, and the two are fastened and connected into one body through fasteners. The connecting part 13 can also be provided with an insertion hole. After the end of the stirring shaft 5 is inserted into the insertion hole, the stirring shaft 5 in the insertion hole is fixed in the insertion hole through fasteners.

[0033] The connecting part 13 is preferably a sheet-shaped connecting part 13. The upper side of the sheet-shaped connecting part 13 has a transition inclined surface 14 that is inclined towards the stirring shaft 5, and the included angle between the transition inclined surface 14 and the stirring shaft 5 is an obtuse angle. Such a setting can avoid having better structural rigidity and smooth transition at the connection between the stirring shaft 5 and the connecting part 13, and avoid the phenomenon of stress concentration at the connection between the stirring shaft 5 and the connecting part 13. On this basis, an overflow gap 15 is formed above the connecting part 13, between the stirring blade 7 and the stirring shaft 5. So as to increase the overflow area on the stirring body. This can make the liquid resistance received by the stirring body during stirring smaller, and can adapt to higher rotation speed scenarios.

[0034] The stirring blade 7 is preferably a rectangular stirring blade 7, and the overflow holes 12 are rectangular holes evenly distributed along the width direction of the stirring blade 7. Such a setting effectively utilizes the space on the stirring blade 7. On the one hand, it ensures that there is enough area on the stirring blade 7 for breaking up the clustered small particle diamonds and agglomerated metal binders in the slurry 6; on the other hand, it also ensures the water passing area of the overflow holes 12, so that the broken diamond particles and metal binders can flow away through the overflow holes 12 in time. In addition, such a setting is convenient for processing and can effectively reduce the processing cost. Of course, the stirring blade 7 can also adopt regular geometric shapes such as semi-circular, triangular, etc., or other irregular geometric shapes. On this basis, the form of the overflow holes 12 can also be round holes, long holes, triangular holes, etc. The distribution of the overflow holes 12 on the stirring blade 7 can be specifically determined according to the shape of the stirring blade 7 and the shape of the overflow holes 12. For example, when both the stirring blade 7 and the overflow holes 12 are circular, the overflow holes 12 can be arranged in multiple circles radially from the inside to the outside on the stirring blade 7. The overflow holes 12 on any one circle are evenly distributed circumferentially and are staggered with the overflow holes 12 on the adjacent circles.

[0035] An ultrasonic oscillation mechanism is provided at the lower end of the stirring tank, so as to synchronously vibrate the stirring tank and the slurry 6 during the stirring operation through ultrasonic waves. In this way, the slurry 6 can be stirred evenly by two methods of ultrasonic vibration and mechanical agitation, so the mixing efficiency is higher and the mixing effect is more uniform. Since the clustered small particle diamonds and agglomerated metal binders in the slurry 6 are usually deposited at the bottom of the stirring tank, the ultrasonic oscillation mechanism is provided at the lower end of the stirring tank, and the clustered small particle diamonds and agglomerated metal binders deposited at the bottom of the stirring tank can be directly vibrated by ultrasonic waves. Therefore, the above setting further improves the mixing efficiency and the mixing effect. In this embodiment, the ultrasonic oscillation mechanism includes an ultrasonic horn 10 and an ultrasonic generator 11. By changing the current magnitude of the ultrasonic generator 11, the magnitude of the ultrasonic energy output to the inside of the stirring tank via the ultrasonic horn 10 can be controlled. In this way, the current magnitude in the ultrasonic generator 11 can be selected according to different mixing conditions of the ingredients, so as to achieve the purpose of accelerating the dispersion of diamond particles and metal agglomeration.

[0036] The mixing tank includes an open tank body 8 and a closed cover 4 fixedly installed above the opening of the open tank body 8. The open tank body 8 preferably adopts a cylindrical tank body, and its upper end is open for filling. Installation flanges 3 extend outward from the opening edge of the open tank body 8 and the edge of the closed cover 4 facing the open tank body 8, so that the open tank body 8 and the closed cover 4 are fixedly connected through the installation flanges 3. The driving unit 1 and the mixing body are both fixedly arranged on the closed cover 4. The mixing body passes through the closed cover 4, so that the end with the mixing blades 7 extends into the open tank body 8 for mixing operation. Such a setting makes the mixing body, the driving unit 1, the open tank body 8 and the closed cover 4 fixedly integrated reliably. During mixing, the force borne by the mixing body will be dispersed to the open tank body 8 and the closed cover 4. This enables the wet mixing device to provide a stronger mixing force and perform a stronger mixing operation. In order to protect the driving unit 1, a protective cover 2 can be provided on the closed cover 4 to enclose and protect the driving unit 1 inside the protective cover 2. A fixed bracket 9 can be installed below the open tank body 8 so that the open tank body 8 can be stably placed on the ground. The driving unit 1 preferably adopts a reciprocating swing motor. Such a setting can make the slurry 6 in the mixing tank alternately bear clockwise and counterclockwise agitation, avoiding the possibility that the small particle diamonds and agglomerated metal binders piled up in the slurry 6 move greatly in the same direction as the mixing blades 7 due to one-way agitation, and enabling the small particle diamonds and agglomerated metal binders piled up in the slurry 6 to be impacted by the mixing blades 7 from two directions, thereby ensuring the efficiency and sufficiency of the mixing blades 7 to disperse the small particle diamonds and agglomerated metal binders piled up in the slurry 6 during the mixing operation.

[0037] Embodiment of the mixing body of the present utility model:

[0038] The embodiment of the mixing body of the present utility model is the same as the mixing body described in the scheme principle and embodiment of the aforementioned wet mixing device, so it will not be elaborated here.

[0039] The above is only the preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model is subject to the claims. Any equivalent structural changes made by using the description and drawings of the present utility model should be included in the protection scope of the present utility model by the same token.

Claims

1. Stirring body, including a stirring shaft used for driving connection with a driving unit; characterized in that, One end of the stirring shaft that is used to contact the slurry is provided with stirring blades; the extending direction of the blade body of the stirring blades is consistent with the axial direction of the stirring shaft; the stirring blades are provided with flow-through holes, and a fixed connection is provided between the lower end of the stirring blades and the lower end of the stirring shaft.

2. The agitating body according to claim 1, characterized in that, The stirring blades and the stirring shaft are connected through a connecting part; the stirring blades, the connecting part and the stirring shaft are integrally formed.

3. The agitating body according to claim 2, characterized in that, The connecting part is a sheet-shaped connecting part, and its upper side has a transition inclined surface that is inclined towards the stirring shaft, and the included angle between the transition inclined surface and the stirring shaft is an obtuse angle.

4. The agitating body according to claim 1, characterized in that, A flow-through gap is provided between the stirring blades and the stirring shaft.

5. The agitating body according to any one of claims 1-4, characterized in that, The stirring blades are rectangular; the flow-through holes are rectangular holes evenly distributed along the width direction of the stirring blades.

6. Wet mixing and stirring device, comprising a stirring tank, a driving unit and a stirring body that is in transmission connection with the driving unit; the stirring body extends into the stirring tank to stir the slurry; characterized in that, The stirring body includes a stirring shaft that is used for transmission connection with a driving unit; one end of the stirring shaft that is used to contact the slurry is provided with stirring blades; the extending direction of the blade body of the stirring blades is consistent with the axial direction of the stirring shaft; the stirring blades are provided with flow-through holes, and a fixed connection is provided between the lower end of the stirring blades and the lower end of the stirring shaft.

7. The wet mixing and stirring device according to claim 6, characterized in that , the stirring blades and the stirring shaft are connected through a connecting part; the stirring blades, the connecting part and the stirring shaft are integrally formed.

8. The wet mixing and stirring device according to claim 7, characterized in that, The connecting part is a sheet-shaped connecting part, and its upper side has a transition inclined surface that is inclined towards the stirring shaft, and the included angle between the transition inclined surface and the stirring shaft is an obtuse angle.

9. The wet mixing and stirring device according to claim 6, characterized in that, A flow-through gap is provided between the stirring blades and the stirring shaft.

10. The wet mixing and stirring device according to any one of claims 6-9, characterized in that, The stirring blades are rectangular; the flow-through holes are rectangular holes evenly distributed along the width direction of the stirring blades.

11. The wet mixing and stirring device according to any one of claims 6-9, characterized in that, An ultrasonic oscillation mechanism is provided at the lower end of the stirring tank to synchronously vibrate the stirring tank and the slurry during the stirring operation by ultrasonic waves.

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