Powder mixer capable of discharging smoothly

Abstract

The utility model discloses a powder mixer capable of discharging smoothly, which comprises a mixing cylinder and a driving motor used for controlling the mixing cylinder to rotate, a discharge port is arranged below the mixing cylinder, an air pressure balance hole is arranged above the mixing cylinder, and a switch valve is arranged on the air pressure balance hole. According to the scheme, the air pressure balance hole is formed, and after mixing of the mixing machine is completed, the air pressure inside and outside the mixing barrel is balanced by opening the switch valve, so that the problem that due to the low air pressure in the mixing barrel, powder easily forms a material arch at the discharging opening, and discharging is not smooth can be solved, and the discharging efficiency is effectively guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of metal powder production and processing technology, and in particular relates to a powder mixer with smooth discharge. Background Technology

[0002] Powder mixers use turbulence principles or high-speed shearing technology to achieve uniform mixing of different materials such as metal powder and ceramic powder, ensuring the consistency of material composition and providing a basic guarantee for subsequent molding processes.

[0003] Common powder mixers include V-type mixers, which mix metal powders by pouring them into both ends and rotating the V-shaped mixing drum with a motor. The mixed powders are then discharged by opening the outlet at the bottom of the V-shaped mixing drum.

[0004] In practical use, the applicant found that for some mixed powders, the mixing process itself causes a decrease in air pressure inside the mixing drum. Furthermore, when dealing with easily adsorbed or sticky powders, this pressure imbalance leads to the formation of material arches that clog the discharge port. Current common practices include using air hammers to break up these arches and temporarily balance the air pressure inside and outside the mixing drum. However, during the discharge process, as the material in the mixing drum decreases, the air pressure drop still occurs, leading to powder arching and clogging the discharge port. This increases the frequency of air hammer use and affects discharge efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a powder mixer with smooth discharge to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a powder mixer with smooth discharge, comprising a mixing cylinder and a drive motor for controlling the rotation of the mixing cylinder, wherein a discharge port is provided below the mixing cylinder, and a pressure balance hole is provided above the mixing cylinder, and a switch valve is provided on the pressure balance hole.

[0007] Preferably, the switching valve includes a valve cylinder that connects the mixing cylinder and the atmosphere. A valve cover is provided at one end of the valve cylinder near the inside of the mixing cylinder. A connecting rod is connected to the valve cover and extends to the other end of the valve cylinder. The connecting rod is used to open and close the valve cover. A limiting part one is provided on the valve cylinder for limiting the connecting rod after the connecting rod opens the valve cover. A limiting part two is provided on the valve cylinder for limiting the connecting rod after the connecting rod closes the valve cover.

[0008] Preferably, a snap-fit ​​block is fixed at the end of the connecting rod away from the valve cover, the length of the snap-fit ​​block is greater than the inner diameter of the valve tube, and a limit groove one and a limit groove two are provided on the end face of the valve tube that is placed in the atmosphere.

[0009] When the snap-fit ​​block is placed in the limiting groove, the valve cover is in the open state;

[0010] When the snap-fit ​​block is placed in the limiting groove two, the valve cover shown is in the closed state.

[0011] Preferably, the valve cover is provided with a limiting cylinder, one end of the connecting rod is placed inside the limiting cylinder, and the end of the connecting rod is provided with a limiting head with a diameter larger than the outer diameter of the connecting rod. The limiting cylinder is provided with a cylinder cover to prevent the limiting head from detaching.

[0012] Preferably, an elastic element is provided between the cylinder cover and the limiting head, and the elastic element applies a force that causes the cylinder cover and the limiting head to move away from each other.

[0013] Preferably, a filter screen is also provided, one end of which is always attached to the inner wall of the valve cylinder, and the other end of which is disposed on the valve cover.

[0014] Preferably, a cover is hinged at the discharge port, and a drainage column is provided on the end face of the cover that fits into the discharge port. A wrench for controlling the rotation of the cover is provided on the cover.

[0015] Preferably, the unblocking column is provided with a flow guide groove.

[0016] The beneficial effects of this utility model are as follows: By opening an air pressure balance hole, the air pressure inside and outside the mixing cylinder is balanced by opening the switch valve after the mixing is completed. This avoids the problem of powder forming a material arch at the discharge port due to low air pressure inside the mixing cylinder, which leads to uneven discharge and effectively ensures the discharge efficiency.

[0017] By placing the valve cover at one end of the valve cylinder inside the mixing cylinder, the problem of powder accumulating inside the valve cylinder during the mixing process can be effectively avoided, thus preventing the functional failure caused by powder clogging the valve cylinder.

[0018] The design of the limiting head and sleeve ensures the realization of the movement path of the connecting block between the limiting groove one and the limiting groove two;

[0019] By setting up an elastic element, it is possible to effectively ensure that the locking block can be locked in the limit groove 2 after the valve cover is closed and will not easily come off.

[0020] By installing a filter screen, the amount of powder escaping along the valve cylinder can be reduced;

[0021] By setting up unblocking columns and guide channels, if the outlet is blocked due to reasons other than air pressure, the outlet can be cleared by turning the cap with a wrench, and the unblocking columns on it will make the blockage easier to clear. The guide channels make the blockage easier to clear. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram showing the connection and positional relationships of the components when the switch valve is closed in this utility model;

[0024] Figure 3 This is a schematic diagram showing the connection and positional relationships of the components when the switch valve is opened in this utility model;

[0025] Figure 4 This is an exploded view of the switching valve in this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the sealing and unblocking column of this utility model;

[0027] In the diagram: 1. Mixing cylinder; 2. Drive motor; 3. Discharge port; 4. Switch valve; 41. Valve cylinder; 42. Valve cover; 43. Connecting rod; 44. Snap-fit ​​block; 45. Screw cap; 46. Limiting cylinder; 47. Cylinder cover; 48. Support frame; 49. Filter screen; 410. Elastic element; 411. Connecting strip; 412. Limiting groove one; 413. Limiting groove two; 414. Limiting head; 5. Sealing cap; 6. Wrench; 7. Unblocking column; 8. Guide channel. Detailed Implementation

[0028] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0029] Example:

[0030] See Figure 1 A powder mixer with smooth discharge includes a mixing cylinder 1 and a drive motor 2 for controlling the rotation of the mixing cylinder 1. A discharge port 3 is provided below the mixing cylinder 1, and a pressure balance hole is provided above the mixing cylinder 1. A switch valve 4 is provided on the pressure balance hole.

[0031] Among them, participants Figure 2-4The switching valve 4 includes a valve cylinder 41 that connects the mixing cylinder 1 and the atmosphere. A valve cover 42 is provided at one end of the valve cylinder 41 near the inside of the mixing cylinder 1. A connecting rod 43 is connected to the valve cover 42 and extends to the other end of the valve cylinder 41. The connecting rod 43 is used to switch the valve cover 4. A screw cap 45 is fixed at the end of the connecting rod 43 away from the valve cover 42. Specifically, it can be fixed by bolts or the like.

[0032] A limiting part 1 is provided on the valve cylinder 41 for limiting the connecting rod 43 after the connecting rod 43 opens the valve cover 42, and a limiting part 2 is provided on the valve cylinder 41 for limiting the connecting rod 43 after the connecting rod 43 closes the valve cover 42.

[0033] The connecting rod 43 has a locking block 44 fixed at the end away from the valve cover 42. Specifically, the locking block 44 can be fixed to the screw cap 45 by the connecting strip 411. The length of the locking block 44 of the valve cylinder 41 is greater than the inner diameter of the valve cylinder 41. The valve cylinder 41 has a limiting groove 412 (i.e., limiting part one) and a limiting groove 413 (i.e., limiting part two) on the end face of the valve cylinder 41 that is placed in the atmosphere.

[0034] When the snap-fit ​​block 44 is placed in the limiting groove 412, the valve cover 42 is in the open state;

[0035] When the snap-fit ​​block 44 is placed in the limiting groove 413, the valve cover 42 shown is in the closed state;

[0036] Specifically, the valve cover 42 is provided with a limiting cylinder 46, one end of the connecting rod 43 is placed inside the limiting cylinder 46, and the end of the connecting rod 43 is provided with a limiting head 414 with a diameter larger than the outer diameter of the connecting rod 43. The limiting cylinder 46 is provided with a cylinder cover 47 to prevent the limiting head 414 from detaching.

[0037] An elastic element 410 is provided between the cylinder cover 47 and the limiting head 414. The elastic element 410 applies a force that causes the cylinder cover 47 and the limiting head 414 to move away from each other. The elastic element 410 can be a spring or the like.

[0038] Among them, see Figure 5 A filter screen 49 is also provided on the valve cover 42. One end of the filter screen 49 is always attached to the inner wall of the valve cylinder 41, and the other end of the filter screen 49 is provided on the valve cover 42. Specifically, the filter screen 49 is fixed on a support frame 48. The bottom end of the support frame 48 is fixed on the valve cover 42, and the top end of the support frame 48 is attached to the inner wall of the valve cylinder 41.

[0039] Among them, see Figure 5A cover 5 is hinged to the discharge port 3. A dredging column 7 is provided on the end face of the cover 5 that fits into the discharge port 3. A guide groove 8 is provided on the dredging column 7. A wrench 6 is provided on the cover 5 to control the rotation of the cover 5.

[0040] Working principle and process:

[0041] When discharging the powder after mixing using the equipment of this solution, first rotate the cap 45 to move the locking block 44 out of the limiting groove 413 and along the end face of the valve cylinder 41 placed in the atmosphere until it reaches the beginning of the limiting groove 412. Press the cap 45 to make it enter the limiting groove 412. The connecting rod 43 will drive the valve cover 42 out of the valve cylinder 41, realizing the air pressure balance inside and outside the mixing cylinder 1. Then, open the cover 5 of the discharge port 3. The mixed powder will slide freely under the action of gravity. If the powder is not due to air pressure reasons, it will fall into the discharge port 3. In the case of powder accumulation, the wrench 6 controls the closing and opening of the cover 5, and the unblocking column 7 on it will break the material arch at the discharge port 3, ensuring smooth material feeding. After the material feeding is completed and the cleaning is finished, the screw cap 45 is lifted, so that the locking block 44 returns from the first limiting groove 412 to the second limiting groove 413. During this lifting process, the valve cover 42 and the valve cylinder 41 will be closed. Then, under the action of the elastic element 410, the locking block 44 can be tightly restricted in the second limiting groove 413, effectively preventing the valve cover 42 from opening during the mixing process.

[0042] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A powder mixer with smooth discharge, comprising a mixing drum (1) and a drive motor (2) for controlling the rotation of the mixing drum (1), wherein a discharge port (3) is provided below the mixing drum (1), characterized in that: A pressure balance hole is provided above the mixing cylinder (1), and a switch valve (4) is provided on the pressure balance hole.

2. The powder mixer with smooth discharge according to claim 1, characterized in that: The switching valve (4) includes a valve cylinder (41) that connects the mixing cylinder (1) and the atmosphere. A valve cover (42) is provided at one end of the valve cylinder (41) near the inside of the mixing cylinder (1). A connecting rod (43) is connected to the valve cover (42) and extends to the other end of the valve cylinder (41). The connecting rod (43) is used to open and close the valve cover (4). A limiting part one is provided on the valve cylinder (41) for limiting the connecting rod (43) after the connecting rod (43) opens the valve cover (42). A limiting part two is provided on the valve cylinder (41) for limiting the connecting rod (43) after the connecting rod (43) closes the valve cover (42).

3. The powder mixer with smooth discharge according to claim 2, characterized in that: The connecting rod (43) is fixed with a snap-fit ​​block (44) at the end away from the valve cover (42). The length of the snap-fit ​​block (44) of the valve cylinder (41) is greater than the inner diameter of the valve cylinder (41). The valve cylinder (41) is provided with a limit groove one (412) and a limit groove two (413) on the end face of the valve cylinder (41) placed in the atmosphere. When the snap-fit ​​block (44) is placed in the limiting groove (412), the valve cover (42) is in the open state; When the snap-fit ​​block (44) is placed in the limiting groove (413), the valve cover (42) shown is in the closed state.

4. The powder mixer with smooth discharge according to claim 3, characterized in that: The valve cover (42) is provided with a limiting cylinder (46), one end of the connecting rod (43) is placed inside the limiting cylinder (46), and the end of the connecting rod (43) is provided with a limiting head (414) with a diameter larger than the outer diameter of the connecting rod (43), and the limiting cylinder (46) is provided with a cylinder cover (47) to prevent the limiting head (414) from detaching.

5. A powder mixer with smooth discharge according to claim 4, characterized in that: An elastic element (410) is provided between the cylinder cover (47) and the limiting head (414), and the elastic element (410) applies a force that causes the cylinder cover (47) and the limiting head (414) to move away from each other.

6. The powder mixer with smooth discharge according to claim 2, characterized in that: A filter screen (49) is also provided, one end of which is always attached to the inner wall of the valve cylinder (41), and the other end of which is provided on the valve cover (42).

7. The powder mixer with smooth discharge according to claim 1, characterized in that: A cover (5) is hinged at the discharge port (3). A draining column (7) is provided on the end face of the cover (5) that fits into the discharge port (3). A wrench (6) is provided on the cover (5) to control the rotation of the cover (5).

8. A powder mixer with smooth discharge according to claim 7, characterized in that: The dredging column (7) is provided with a flow guide groove (8).

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