Ultrasonic vibrating screen for grading tungsten-cobalt alloy powder
Patent Information
- Application Number
- CN202610960162.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-30
- Publication Date
- 2026-08-21
AI Technical Summary
现有技术中的振动筛在排料过程中，出料管口处易因粉体架桥、静电吸附、压实结块等问题发生堵塞，导致排料不畅甚至完全中断，需额外设置振动器或人工敲击疏通，既增加了振动筛的使用成本，也降低了工作效率；由于出料管与振动筛为一体式结构，当使用不同类型的装料袋接料时，需更换不同类型的振动筛，存在较大局限性；此外，粉体直接落至筛网中间区域，布料不均匀，且超声波虽可分散部分团聚粉体，但对软团聚及架桥现象的处理效果有限，导致振动筛的筛分效率降低
1、本发明通过排料机构的设置，实现了更低成本的排料功能，先通过筛框振动带动出料管与排料环同步振动，排料环在每个振动周期小幅跳起，与连接座脱离啮合的过程中形成瞬时环形缝隙，粉体在自重与振动作用下涌入缝隙并泻出，而棘齿与齿槽采用不对称设计，使排料环仅能单向旋转，且每周期前进一个齿距，旋转时，通过螺旋导流槽推送管内壁粉体，棘齿与齿槽的啮合剪切连接座堆积的粉体，实现刮削与排料一体化，防止出料管堵塞，在出料管粉体堆积较多，使排料环受压力增大时，缝隙出现频率降低但排出量增大，反之频率升高而排出量减小，无需额外动力设备即可自适应调节粉体流量，降低成本并提高效率。
Smart Images
Figure CN122605707A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of vibrating screen technology, specifically to an ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder. Background Technology
[0002] Tungsten-cobalt alloy powder is a pre-alloyed powder specifically prepared for the production of high-performance cemented carbides. Through high-temperature sintering and other techniques, cobalt can be uniformly coated or compounded onto the surface of tungsten carbide particles, forming a composite powder. Before using tungsten-cobalt alloy powder for powder metallurgy processing, the powder needs to be classified using an ultrasonic vibrating screen to prevent agglomeration. However, existing ultrasonic vibrating screens have the following shortcomings: In existing vibrating screens, the discharge port is prone to blockage during the discharge process due to powder bridging, electrostatic adsorption, compaction, and agglomeration, leading to poor or even complete discharge. This requires additional vibrators or manual tapping to clear the blockage, increasing the operating cost and reducing efficiency. Furthermore, since the discharge pipe and vibrating screen are integrated, different types of vibrating screens must be used when different types of material bags are used, presenting significant limitations. Additionally, the powder falls directly into the middle area of the screen, resulting in uneven distribution. While ultrasound can disperse some agglomerated powder, its effectiveness in handling soft agglomerates and bridging is limited, further reducing the screening efficiency of the vibrating screen.
[0003] Therefore, we propose an ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder to solve the problems mentioned above. Summary of the Invention
[0004] The purpose of this invention is to provide an ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder. By setting a discharge mechanism, an installation mechanism, and a dispersing mechanism on the vibrating screen, it achieves a lower-cost discharge function, a wider range of applications, and a more efficient screening function, thereby solving the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: an ultrasonic vibrating screen for classifying tungsten cobalt alloy powder, comprising a body, the body comprising a base, a shock-absorbing spring mounted on the side of the base, and a screen frame mounted on the top of the base, a discharge pipe fixedly mounted on one side of the outer surface of the screen frame, a discharge mechanism and an installation mechanism being provided at the discharge end of the discharge pipe, and a dispersing mechanism being provided on the inner side of the screen frame; The top of the screen frame is equipped with a top cover, and the top of the top cover has a feed inlet in the middle. The outer surface of the base, the screen frame and the top cover are all equipped with retaining rings. Vibration motors are installed on both sides of the inner surface of the base. An ultrasonic transducer is installed on one side of the outer surface of the screen frame. An ultrasonic power supply box is installed at the input end of the ultrasonic transducer. A screen is installed on the inner side of the screen frame. The discharge mechanism includes a connecting seat, which is installed at the bottom of the discharge pipe. A discharge ring is provided on the inner side of the discharge pipe. A rib is fixedly installed on the inner side of the discharge pipe. A spiral guide groove is opened on the outer surface of the discharge ring. A ratchet is fixedly installed at the bottom of the discharge ring. A tooth groove is opened at the top of the connecting seat. The ratchet meshes with the inner side of the tooth groove. The tooth shape of the ratchet and the tooth groove are asymmetrical, that is, one side is steep and the other side is gentle.
[0006] Preferably, the two sets of vibration motors rotate in opposite directions, and slots are provided at the top of the base, screen frame and screen, and insertion rods are fixedly installed at the bottom of the screen frame and the top cover, with the insertion rods inserted into the inside of the slots.
[0007] Preferably, the ultrasonic power supply box is disposed on one side of the outer surface of the base, the output end of the ultrasonic transducer is connected to the bottom end of the screen, and the apertures of the two sets of screens are different.
[0008] Preferably, a uniform radial gap is left between the outer side of the discharge ring and the inner wall of the discharge pipe, and the two ends of the outer surface of the discharge ring contact the top of the connecting seat and the bottom of the rib, respectively.
[0009] Preferably, the inner diameter of the connecting seat is smaller than the outer diameter of the discharge ring, and the inner diameter of the connecting seat is larger than the inner diameter of the discharge ring.
[0010] Preferably, the installation mechanism includes a snap-fit block, which is fixedly installed on the outer surface of the discharge pipe. An annular groove is provided on the inner side of the connecting seat, and a slot is provided at the top of the annular groove. Both the snap-fit block and the outer surface of the connecting seat are provided with a receiving groove.
[0011] Preferably, a return spring is fixedly installed at one end of the inner surface of the storage groove at the snap-fit block, and a limit block is fixedly installed at one end of the outer surface of the return spring. The limit block is simultaneously slidably connected to the inner side of the corresponding storage groove of the connecting seat and the snap-fit block.
[0012] Preferably, the dispersing mechanism includes a fixed base, which is fixedly installed on the inner wall of the screen frame, and a spring sheet is installed on one side of the surface of the fixed base. The spring sheet is installed on the surface of the fixed base by fixing bolts, and a fixed rod and a movable bar are installed on one side of the outer surface of the spring sheet.
[0013] Preferably, a counterweight is installed on one side of the outer surface of the movable strip, the movable strip in the middle of the inner side of the screen frame is divided into left and right sections, and a comb tooth and a flat paddle are fixedly installed at the bottom end of the movable strip, with a gap between the bottom end of the comb tooth and the top end of the screen.
[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention achieves a lower-cost discharge function through the design of the discharge mechanism. First, the screen frame vibrates, causing the discharge pipe and discharge ring to vibrate synchronously. The discharge ring jumps slightly in each vibration cycle, forming an instantaneous annular gap during the disengagement process from the connecting seat. The powder flows into the gap and is discharged under its own weight and vibration. The ratchet and tooth groove adopt an asymmetrical design, which allows the discharge ring to rotate only in one direction and advance one tooth pitch per cycle. During rotation, the powder is pushed to the inner wall of the pipe through the spiral guide groove. The meshing of the ratchet and tooth groove shears the powder accumulated on the connecting seat, realizing the integration of scraping and discharge, preventing the discharge pipe from being blocked. When there is a lot of powder accumulation in the discharge pipe, which increases the pressure on the discharge ring, the frequency of the gap appears decreases but the discharge volume increases. Conversely, the frequency increases but the discharge volume decreases. The powder flow rate can be adaptively adjusted without additional power equipment, reducing costs and improving efficiency.
[0015] 2. This invention features an installation mechanism, enabling a wider range of applications. First, press the limiting block to move it away from the receiving slot on the connecting seat, simultaneously compressing the return spring. Then, rotate the connecting seat to move the slot to the position of the locking block, and remove the connecting seat for replacement. At this time, the discharge ring will fall off due to the loss of the limiting effect of the connecting seat, allowing for simultaneous replacement. After replacement, press the limiting block to align the slot of the connecting seat with the locking block, and place the connecting seat on the discharge pipe port. Then, rotate the connecting seat to move the slot away from the locking block, resetting the return spring and moving the limiting block into the receiving slot of the connecting seat, thus limiting the position of the connecting seat. This provides convenience for the quick replacement of the connecting seat and the discharge ring, enabling the vibrating screen to adapt to different types of receiving bags and broadening the application range of the vibrating screen.
[0016] 3. This invention incorporates a dispersing mechanism, achieving a more efficient screening function. First, the powder is fed into the inlet, falling to the center of the screen. When the screen frame accelerates upwards, the movable bar tends to remain stationary due to inertia, causing the spring sheet to bend and the movable bar to swing to one side relative to the screen frame. When the screen frame accelerates downwards, the movable bar swings to the other side. This cycle repeats, creating a high-frequency oscillation in the horizontal plane. The oscillation amplitude can be controlled by adjusting the weight of the counterweight. Subsequently, the movable bar drives the comb teeth and flat paddles to laterally move the powder on the screen surface. Furthermore, the powder, originally subjected to longitudinal vibration from the screen, breaks up soft agglomerations and bridging, achieving uniform powder distribution and improving the screening efficiency of the vibrating screen. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of an ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder according to the present invention; Figure 2 This is a three-dimensional view of the disassembled structure of an ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder according to the present invention; Figure 3 This is a three-dimensional cross-sectional view of an ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder according to the present invention. Figure 4 This is a three-dimensional cross-sectional view of the discharge pipe in an ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder according to the present invention. Figure 5 This invention relates to an ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder. Figure 2 Enlarged 3D view of the structure at point A in the middle; Figure 6 This is a bottom-view perspective view of the discharge ring structure in an ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder according to the present invention. Figure 7 This is a top perspective view of the connecting seat in an ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder according to the present invention. Figure 8 This is a side view of the three-dimensional structure of the dispersing mechanism in an ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder according to the present invention. Figure 9 This is a partial side view of the movable bar in an ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder according to the present invention.
[0018] In the diagram: 1. Machine body; 101. Base; 102. Shock-absorbing spring; 103. Screen frame; 104. Discharge pipe; 105. Top cover; 106. Feed inlet; 107. Binding ring; 108. Vibration motor; 109. Ultrasonic power supply box; 110. Ultrasonic transducer; 111. Screen; 2. Discharge mechanism; 201. Connecting seat; 202. Discharge ring; 203. Rib; 204. Spiral guide 205. Flow channel; 206. Ratchet; 3. Tooth groove; 3. Mounting mechanism; 301. Snap-fit block; 302. Annular groove; 303. Snap-fit groove; 304. Storage groove; 305. Return spring; 306. Limiting block; 4. Dispersing mechanism; 401. Fixed base; 402. Spring sheet; 403. Fixed rod; 404. Movable bar; 405. Counterweight block; 406. Comb teeth; 407. Flat paddle. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] Please see the appendix Figure 1 -Appendix Figure 9 As shown, the present invention provides a technical solution: an ultrasonic vibrating screen for grading tungsten cobalt alloy powder, including a body 1, the body 1 including a base 101, a shock-absorbing spring 102 installed on the side of the base 101, and a screen frame 103 installed on the top of the base 101. A discharge pipe 104 is fixedly installed on one side of the outer surface of the screen frame 103. The discharge end of the discharge pipe 104 is provided with a discharge mechanism 2 and an installation mechanism 3. A dispersing mechanism 4 is provided on the inner side of the screen frame 103.
[0021] Example 1, according to Figure 1-7 As shown, a top cover 105 is installed on the top of the screen frame 103. A feed inlet 106 is opened in the middle of the top of the top of the top cover 105. A retaining ring 107 is installed on the outer surface of the connection between the base 101, the screen frame 103, and the top cover 105. Vibration motors 108 are installed on both sides of the inner surface of the base 101. An ultrasonic transducer 110 is installed on one side of the outer surface of the screen frame 103. An ultrasonic power supply box 109 is installed at the input end of the ultrasonic transducer 110. A screen mesh 111 is installed on the inner side of the screen frame 103. The two sets of vibration motors 108 rotate in opposite directions. Slots are opened at the top of the base 101, the screen frame 103, and the screen mesh 111. Insert rods are fixedly installed at the bottom ends of the screen frame 103 and the top cover 105, and the insert rods are inserted into the inner side of the slots. The ultrasonic power supply box 109 is located on one side of the outer surface of the base 101. The output end of the ultrasonic transducer 110 is connected to the bottom end of the screen mesh 111. The two sets of screen meshes 111... The discharge mechanism 2, with its different apertures, includes a connecting seat 201 mounted on the bottom end of the discharge pipe 104. A discharge ring 202 is provided on the inner side of the discharge pipe 104, and a rib 203 is fixedly installed on the inner side of the discharge pipe 104. A spiral guide groove 204 is formed on the outer surface of the discharge ring 202, and a ratchet 205 is fixedly installed at the bottom end of the discharge ring 202. A toothed groove 206 is formed at the top end of the connecting seat 201, and the ratchet 205 engages with the toothed groove. The inner side of 206, and the tooth shape of both the ratchet 205 and the tooth groove 206 are asymmetrically designed, that is, one side is steep and the other side is gentle. There is a uniform radial gap between the outer side of the discharge ring 202 and the inner wall of the discharge pipe 104. The two ends of the outer surface of the discharge ring 202 contact the top of the connecting seat 201 and the bottom of the rib 203 respectively. The inner diameter of the connecting seat 201 is smaller than the outer diameter of the discharge ring 202, and the inner diameter of the connecting seat 201 is larger than the inner diameter of the discharge ring 202.
[0022] The overall effect of Embodiment 1 is as follows: it achieves a lower-cost discharge function. First, the vibration of the screen frame 103 drives the discharge pipe 104 to vibrate synchronously. The vibration energy is further transmitted to the discharge ring 202, causing it to jump slightly in each vibration cycle. The rib 203 and the connecting seat 201 together limit the movement path of the discharge ring 202. At the moment the discharge ring 202 jumps, the tooth groove 206 on the connecting seat 201 disengages from the ratchet 205 on the discharge ring 202, forming an instantaneous annular gap. The powder flows into the gap and flows out under the combined action of its own weight and vibration. Because the ratchet 205 and the tooth groove 206 adopt an asymmetrical tooth shape design, the steep sides will block each other, so that the discharge ring 202 can only rotate unidirectionally along the gentle side. Each time it falls, it advances only one tooth pitch in the same direction. During rotation, the discharge ring 202 forces the powder adhering to the inner wall of the discharge pipe 104 downward through the spiral guide groove 204. At the same time, at the moment when the ratchet 205 and the tooth groove 206 mesh, the powder accumulated on the connecting seat 201 is sheared off, realizing the integration of scraping and discharge, effectively preventing the discharge pipe 104 from clogging. When there is a lot of powder accumulated in the discharge pipe 104, the pressure on the discharge ring 202 increases, the frequency of the annular gap decreases, but the single discharge volume increases. Conversely, the frequency of the annular gap increases, but the single discharge volume decreases. Without the need for additional electric drive equipment, it can achieve adaptive adjustment according to the powder flow rate, reducing the operating cost of the vibrating screen and improving working efficiency.
[0023] Example 2, according to Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown, the installation mechanism 3 includes a snap-fit block 301, which is fixedly installed on the outer surface of the discharge pipe 104. An annular groove 302 is provided on the inner side of the connecting seat 201, and a snap-fit groove 303 is provided at the top of the annular groove 302. Both the snap-fit block 301 and the connecting seat 201 have a receiving groove 304 on their outer surfaces. A return spring 305 is fixedly installed at one end of the inner surface of the receiving groove 304 at the snap-fit block 301, and a limit block 306 is fixedly installed at one end of the outer surface of the return spring 305. The limit block 306 is simultaneously slidably connected to the inner side of the corresponding receiving groove 304 of the connecting seat 201 and the snap-fit block 301.
[0024] The overall effect of Embodiment 2 is as follows: it achieves a wider range of applications. First, press the limiting block 306 to move it away from the receiving groove 304 on the connecting seat 201, which simultaneously compresses the return spring 305. Then, rotate the connecting seat 201 to move the slot 303 to the position of the locking block 301, allowing the connecting seat 201 to be removed for replacement. At this time, the discharge ring 202 will fall off due to the loss of the limiting effect of the connecting seat 201, and can be replaced simultaneously. After replacement, press the limiting block 306 to move the connecting seat 201... Align the slot 303 with the snap-fit block 301, and fit the connecting seat 201 onto the discharge pipe 104 port. Then rotate the connecting seat 201 so that the slot 303 moves away from the snap-fit block 301. The reset spring 305 resets and drives the limiting block 306 to move into the receiving slot 304 of the connecting seat 201, thus limiting the position of the connecting seat 201. This design provides convenience for the quick replacement of the connecting seat 201 and the discharge ring 202, enabling the vibrating screen to adapt to different types of receiving bags and effectively expanding the application range of the vibrating screen.
[0025] Example 3, according to Figure 2 , Figure 3 , Figure 8 and Figure 9 As shown, the dispersing mechanism 4 includes a fixed base 401, which is fixedly installed on the inner wall of the screen frame 103. A spring sheet 402 is installed on one side of the surface of the fixed base 401. The spring sheet 402 is installed on the surface of the fixed base 401 by fixing bolts. A fixed rod 403 and a movable bar 404 are installed on one side of the outer surface of the spring sheet 402. A counterweight 405 is installed on one side of the outer surface of the movable bar 404. The movable bar 404 in the middle of the inner side of the screen frame 103 is divided into left and right sections. A comb tooth 406 and a flat paddle 407 are fixedly installed at the bottom end of the movable bar 404. The bottom end of the comb tooth 406 maintains a gap with the top end of the screen 111.
[0026] The overall effect of embodiment 3 is as follows: it achieves a more efficient screening function. First, the powder is fed into the feed port 106 and falls into the middle of the screen 111. When the screen frame 103 accelerates upward, the movable bar 404 tends to remain stationary due to inertia, causing the spring sheet 402 to bend. The movable bar 404 swings to one side relative to the screen frame 103. When the screen frame 103 accelerates downward, the movable bar 404 swings to the other side. This process is repeated, and the movable bar 404 forms a high-frequency oscillation in the horizontal plane. The oscillation amplitude can be controlled by adjusting the weight of the counterweight 405. Then, the movable bar 404 drives the comb teeth 406 and the flat paddle 407 to move the powder on the surface of the screen 111 laterally. The powder is originally subjected to the longitudinal vibration of the screen 111, thereby breaking the soft agglomeration and bridging of the powder, realizing the uniform distribution of powder on the screen 111, and effectively improving the screening efficiency of the vibrating screen.
[0027] The working principle of the entire equipment is as follows: During the operation of the vibrating screen, two vibrating motors 108 are first started. Through counter-rotation, they form a linear reciprocating motion perpendicular to the motor axis, which in turn drives the screen frame 103 and the base 101 to vibrate. The damping spring 102 can reduce the impact of vibration on the base 101. The ultrasonic power supply box 109 transmits electrical energy to the ultrasonic transducer 110, which converts the electrical energy into sound waves and transmits them to the screen mesh 111 to generate high-frequency, low-amplitude vibration. Then, the powder is fed in through the feed inlet 106 and falls into the middle of the screen mesh 111. At this time, when the screen frame 103 accelerates upward, the movable bar 404 tends to remain stationary due to inertia, causing the spring sheet 402 to bend. The movable bar 404 moves to one side relative to the screen frame 103. When the screen frame 103 accelerates downwards, the movable bar 404 swings to the other side, repeating this motion. The movable bar 404 forms a high-frequency oscillation in the horizontal plane, and the oscillation amplitude can be controlled by adjusting the weight of the counterweight 405. Then, the movable bar 404 drives the comb teeth 406 and the flat paddle 407 to laterally move the powder on the surface of the screen 111. The powder, originally subjected to the longitudinal vibration of the screen 111, breaks down soft agglomerations and bridging, achieving uniform distribution of the powder on the screen 111 and accelerating the screening efficiency of the vibrating screen. Subsequently, the coarse material after screening is moved to the discharge pipe 104 by vibration, while the fine material falls into the next layer of screen 111 for further screening. The vibration of the screen frame 103 drives the discharge pipe 104 to vibrate, and the fine material... The vibration is transmitted to the discharge ring 202, causing it to jump slightly in each vibration cycle. The movement path of the discharge ring 202 is limited by the rib 203 and the connecting seat 201. At the moment of jumping, the tooth groove 206 on the connecting seat 201 disengages from the ratchet 205 on the discharge ring 202, forming a momentary annular gap. The powder flows into the gap and flows out under its own weight and vibration. Since the ratchet 205 and the tooth groove 206 are asymmetrical, the steep sides will block each other, so that the discharge ring 202 can only rotate unidirectionally along the gentle side. Moreover, the discharge ring 202 can only advance one tooth pitch in the same direction each time it falls. During the rotation, the powder adhering to the inner wall of the discharge pipe 104 is forcibly pushed downward by the spiral guide groove 204. At the same time, the ratchet 205 and the tooth groove 206 disengage from the ratchet 206 and the ratchet 205. The groove 206 shears off the powder accumulated on the connecting seat 201 at the moment of engagement, realizing the integration of scraping and discharge, preventing blockage of the discharge pipe 104. When too much powder accumulates in the discharge pipe 104, the greater the pressure acting on the discharge ring 202, the lower the frequency of the annular gap but the larger the discharge volume per time. Conversely, the higher the frequency of the annular gap but the smaller the discharge volume per time, the more adaptive the adjustment can be achieved according to the powder flow rate without the need to add electric drive equipment, reducing the operating cost of the vibrating screen and improving working efficiency. When different types of receiving bags are needed for receiving or the discharge ring 202 needs to be replaced, the limit block 306 can be pressed to move the limit block 306 away from the receiving groove 304 on the connecting seat 201, and drive the return spring 305 to compress.Then, rotate the connecting seat 201 to move the slot 303 to the locking block 301, allowing the connecting seat 201 to be removed for replacement. Simultaneously, the discharge ring 202, no longer restrained by the connecting seat 201, will detach and can be replaced at the same time. After replacement, press the limiting block 306 to align the slot 303 on the connecting seat 201 with the locking block 301, so that the connecting seat 201 is fitted onto the discharge pipe 104 port. Next, rotate the connecting seat 201 to move the slot 303 away from the locking block 301. The reset spring 305 then moves the limiting block 306 to the receiving slot 304 on the connecting seat 201, thus limiting the position of the connecting seat 201. This facilitates the quick replacement of the connecting seat 201 and the discharge ring 202, making the vibrating screen suitable for different types of receiving bags and increasing its applicability.
[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. An ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder, comprising a body (1), characterized in that: The machine body (1) includes a base (101), a shock-absorbing spring (102) is installed on the side of the base (101), and a screen frame (103) is installed on the top of the base (101). A discharge pipe (104) is fixedly installed on one side of the outer surface of the screen frame (103). The discharge end of the discharge pipe (104) is provided with a discharge mechanism (2) and an installation mechanism (3). A dispersing mechanism (4) is provided on the inner side of the screen frame (103). A top cover (105) is installed on the top of the screen frame (103). A feed inlet (106) is opened in the middle of the top of the top of the top cover (105). A retaining ring (107) is installed on the outer surface of the connection between the base (101), the screen frame (103) and the top cover (105). Vibration motors (108) are installed on both sides of the inner surface of the base (101). An ultrasonic transducer (110) is installed on one side of the outer surface of the screen frame (103). An ultrasonic power supply box (109) is installed at the input end of the ultrasonic transducer (110). A screen mesh (111) is installed on the inner side of the screen frame (103). The discharge mechanism (2) includes a connecting seat. (201) The connecting seat (201) is installed at the bottom end of the discharge pipe (104). A discharge ring (202) is provided on the inner side of the discharge pipe (104). A rib (203) is fixedly installed on the inner side of the discharge pipe (104). A spiral guide groove (204) is opened on the outer surface of the discharge ring (202). A ratchet (205) is fixedly installed at the bottom end of the discharge ring (202). A tooth groove (206) is opened at the top end of the connecting seat (201). The ratchet (205) meshes with the inner side of the tooth groove (206). The tooth shape of the ratchet (205) and the tooth groove (206) are both asymmetrically designed, that is, one side is steep and the other side is gentle.
2. The ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder according to claim 1, characterized in that: The two sets of vibration motors (108) rotate in opposite directions. The top of the base (101), the screen frame (103) and the screen (111) are all provided with slots. The bottom of the screen frame (103) and the top cover (105) are all fixedly installed with plug rods, which are inserted into the inside of the slots.
3. The ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder according to claim 1, characterized in that: The ultrasonic power supply box (109) is located on one side of the outer surface of the base (101), and the output end of the ultrasonic transducer (110) is connected to the bottom end of the screen (111). The apertures of the two sets of screens (111) are different.
4. The ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder according to claim 1, characterized in that: A uniform radial gap is left between the outer side of the discharge ring (202) and the inner wall of the discharge pipe (104), and the two ends of the outer surface of the discharge ring (202) respectively contact the top end of the connecting seat (201) and the bottom end of the rib (203).
5. The ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder according to claim 1, characterized in that: The inner diameter of the connecting seat (201) is smaller than the outer diameter of the discharge ring (202), and the inner diameter of the connecting seat (201) is larger than the inner diameter of the discharge ring (202).
6. The ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder according to claim 1, characterized in that: The installation mechanism (3) includes a snap-fit block (301), which is fixedly installed on the outer surface of the discharge pipe (104). An annular groove (302) is provided on the inner side of the connecting seat (201), and a slot (303) is provided at the top of the annular groove (302). A storage slot (304) is provided on the outer surface of both the snap-fit block (301) and the connecting seat (201).
7. The ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder according to claim 6, characterized in that: A reset spring (305) is fixedly installed at one end of the inner surface of the storage groove (304) at the snap-fit block (301), and a limit block (306) is fixedly installed at one end of the outer surface of the reset spring (305). The limit block (306) is simultaneously slidably connected to the inner side of the corresponding storage groove (304) of the connecting seat (201) and the snap-fit block (301).
8. The ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder according to claim 1, characterized in that: The dispersing mechanism (4) includes a fixed seat (401), which is fixedly installed on the inner wall of the screen frame (103). A spring sheet (402) is installed on one side of the surface of the fixed seat (401). The spring sheet (402) is installed on the surface of the fixed seat (401) by fixing bolts. A fixing rod (403) and a movable bar (404) are installed on one side of the outer surface of the spring sheet (402).
9. The ultrasonic vibrating screen for classifying tungsten-cobalt alloy powder according to claim 8, characterized in that: A counterweight (405) is installed on one side of the outer surface of the movable strip (404). The movable strip (404) in the middle of the inner side of the sieve frame (103) is divided into left and right sections. A comb tooth (406) and a flat paddle (407) are fixedly installed at the bottom end of the movable strip (404). The bottom end of the comb tooth (406) maintains a gap with the top end of the sieve (111).