Coating powder grinding device

Abstract

The utility model discloses a coating powder grinding device and relates to the technical field of grinding devices. The grinding device comprises a grinding structure, comprising an outer barrel, an inner barrel located in the outer barrel, a bearing seat fixedly arranged at the upper end of the outer barrel, a rotating shaft rotationally inserted into the bearing seat, a grinding body located at the lower end of the rotating shaft, a lining plate fixedly arranged on the inner wall of the inner barrel, a rotating motor fixedly arranged at one end of the bearing seat, a first gear ring connected to the outer wall of the rotating shaft in a sleeving mode and a second gear ring fixedly arranged on the inner wall of the upper end of the inner barrel. The gear is fixedly arranged at the lower end of the rotating motor; the cooling structure comprises a water inlet pipe, a water outlet pipe, a water chamber I, a water chamber II, a water inlet pipe and a water outlet pipe, wherein the water inlet pipe and the water outlet pipe are rotationally mounted in the rotating shaft and the grinding body; the water chamber I is positioned between the outer cylinder and the inner cylinder; the cooling structure is arranged, so that the problem that powder is caked or deteriorated due to high temperature in the raw material grinding process caused by heat generated in the coating raw material grinding process of the grinding body is solved.

Description

Technical Field

[0001] This utility model relates to the field of grinding equipment technology, and in particular to a coating powder grinding equipment. Background Technology

[0002] Paint is a material applied to the surface of an object to protect, decorate, or impart functions such as waterproofing, fireproofing, and corrosion resistance. Paint is typically composed of resin, solvent, pigment, filler, and additives. After these powders are processed through mixing, grinding, and other processes, the powder particles are refined and evenly distributed with good dispersibility, thereby improving the film-forming quality and performance of the paint. This also helps the various components in the powder to mix fully, improves the flowability of the powder, and facilitates subsequent spraying or coating processes.

[0003] Chinese patent discloses a grinding device for fire-retardant coating powder (authorization announcement number CN220160161U). The patented technology includes a grinding chamber, a collector that can be detachably installed below the grinding chamber, a grinding assembly, and a placement component located below the grinding assembly. The placement component includes an upper plate and a lower plate with a plurality of small holes on their surface. The upper plate is fixed to the grinding chamber, and the lower plate and the upper plate are rotatably connected by a connecting shaft. The lower plate is fixed to a bearing tube. The grinding chamber is partially disconnected, and the bearing tube rotates at the disconnection point. The grinding assembly includes a sliding component and a lifting assembly that are slidably disposed in the grinding chamber. The lifting assembly is fixed to the sliding component and can drive the sliding component to slide up and down in the grinding chamber. The lifting assembly includes a first motor, a screw, a screw sleeve, and a connecting rod. The screw is horizontally disposed in the grinding chamber and one end is rotatably connected to the grinding chamber wall, and the other end is fixed to the output end of the first motor.

[0004] This invention enables control over the size of the grinding particles.

[0005] This patented technology has the advantage of controlling the size of grinding particles during use, but there are still shortcomings in its use. During the grinding process of the grinding body on the coating raw material, the grinding structure will generate heat. During the grinding process, the powder will agglomerate or deteriorate due to high temperature. Therefore, those skilled in the art have provided a coating powder grinding device to solve the problems mentioned in the background art. Utility Model Content

[0006] 1. Technical Solution

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model relates to a coating powder grinding device, comprising,

[0009] The grinding structure includes an outer cylinder, an inner cylinder located inside the outer cylinder, a bearing seat fixed at the upper end of the outer cylinder, a rotating shaft rotatably inserted into the bearing seat and having a hollow interior, a grinding body located at the lower end of the rotating shaft, an annular liner fixed to the inner wall of the inner cylinder, a rotating motor fixed to one end of the bearing seat, a gear ring 1 sleeved on the outer wall of the rotating shaft, a gear ring 2 fixed to the inner wall at the upper end of the inner cylinder, and a gear fixed to the lower end of the rotating motor and meshing with gear ring 1 and gear ring 2.

[0010] The cooling structure includes an inlet pipe and an outlet pipe rotatably mounted inside the upper end of the rotating shaft and inside the lower end of the grinding body, a water chamber 1 located between the outer cylinder and the inner cylinder, a water chamber 2 opened inside the grinding body, and an inlet pipe and an outlet pipe penetrating the outer cylinder and located inside the water chamber 1.

[0011] as well as;

[0012] The screening structure includes a screen frame located below the inner cylinder, a screen mesh located inside the screen frame, and a vibrating motor fixed at the lower end of the screen frame.

[0013] Furthermore, the gap between the liner and the grinding body decreases sequentially from top to bottom, the upper end of the grinding body is provided with a flow guide surface, and the outer wall of the outer cylinder is provided with symmetrically distributed support frames.

[0014] Specifically, the coating material being ground is gradually subjected to grinding pressure through decreasing gaps, reducing the grinding pressure on the coating material. The guide surface prevents the coating material from accumulating at the top of the grinding body, and the support frame supports the outer cylinder.

[0015] Furthermore, the inner wall of the outer cylinder is provided with two sets of sealing sleeves, and the outer walls at both the upper and lower ends of the inner cylinder are provided with connecting rings that are rotatably installed inside the sealing sleeves;

[0016] Specifically, the connecting ring rotates inside the sealing sleeve, preventing water leakage from the water chamber when the inner cylinder rotates.

[0017] Furthermore, pressure rings are provided at the upper and lower ends of the connecting ring, and top rings are provided on the inner walls of the upper and lower ends of the inner cylinder. The inner wall of the pressure ring is rotatably equipped with a second set of balls arranged in a ring array and rolling against the inner wall of the top ring. The inner wall of the top ring is rotatably equipped with a first set of balls arranged in a ring array and rolling against the outer wall of the pressure ring.

[0018] Specifically, the pressure ring and the top ring achieve rolling contact through the cooperation of ball bearing one and ball bearing two, providing effective rotational support when the inner cylinder rotates.

[0019] Furthermore, a guide hopper is provided inside the lower end of the inner cylinder, located below the liner plate, and an upper cover is provided at the upper end of the screen frame. A cloth sleeve is connected between the upper cover and the guide hopper.

[0020] Specifically, the coating powder ground in the inner cylinder is guided by the guide bucket and transported to the screen frame. During the screening process, the cloth sleeve provides compensation by moving on the screen frame, and the top cover intercepts the coating powder that bounces upward during screening.

[0021] Furthermore, a flow guide hood is provided at the lower end of the screen frame, a discharge port is provided at the lower end of the flow guide hood, and a discharge port is provided on one side of the lower end of the screen frame;

[0022] Specifically, the paint powder discharged from the screen is guided by the flow guide hood, so that the paint powder is gathered and discharged through the discharge port.

[0023] Furthermore, a second support frame is provided on both sides of the screen frame, and springs connected to the second support frame and symmetrically distributed are provided at both ends of the screen frame. A guide rod located inside the spring and slidably installed inside the second support frame is provided at both ends of the screen frame.

[0024] Specifically, the support frame supports one end of the spring to provide elastic support for the screen frame. During the extension and retraction of the spring, the guide rod slides inside the support frame to limit the spring and prevent it from shifting outward.

[0025] 2. Beneficial effects

[0026] Compared with existing technologies, the advantages of this utility model are:

[0027] In this invention, the raw material for the coating is fed into the inner cylinder through the opening at the top of the inner cylinder. During this process, the rotating motor drives the gear ring one and gear ring two to rotate the grinding body and the inner cylinder in opposite directions. The raw material for the coating is ground by the grinding body and the inner liner plate of the inner cylinder.

[0028] During the grinding process, cooling water is continuously injected into the second water chamber inside the grinding body, and cooling water is continuously injected into the first water chamber between the inner and outer cylinders. The cooling water cools down the grinding body and the liner of the inner cylinder, reducing the heat generated during the grinding process and preventing the powder from clumping or deteriorating due to high temperature.

[0029] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1This is a front-view three-dimensional structural diagram of the present invention;

[0032] Figure 2 This is a bottom-view three-dimensional structural diagram of the present invention;

[0033] Figure 3 This is a top-view three-dimensional structural diagram of the present invention;

[0034] Figure 4 This is a schematic diagram of the main sectional three-dimensional structure of this utility model;

[0035] Figure 5 This is a three-dimensional cross-sectional view of the grinding body of this utility model;

[0036] Figure 6 This is a schematic diagram of the three-dimensional structure of the sieve frame of this utility model in main cross-section.

[0037] Figure 7 This is a partial main sectional three-dimensional structural diagram of the connecting ring of this utility model.

[0038] The attached diagram lists the components represented by each number as follows:

[0039] 100. Grinding structure; 101. Inner cylinder; 102. Support frame one; 103. Rotating shaft; 104. Bearing seat; 105. Rotating motor; 106. Gear; 107. Gear ring one; 108. Gear ring two; 109. Top ring; 110. Connecting ring; 111. Liner; 112. Grinding body; 113. Guide surface; 114. Ball one; 115. Ball two; 116. Sealing sleeve; 117. Pressure ring;

[0040] 200. Cooling structure; 201. Water outlet pipe; 202. Water inlet pipe; 203. Outer cylinder; 204. Water chamber one; 205. Water chamber two;

[0041] 300. Screening structure; 301. Support frame II; 302. Guide hopper; 303. Cloth cover; 304. Top cover; 305. Screen; 306. Discharge port; 307. Guide hood; 308. Vibrating motor; 309. Discharge port; 310. Guide rod; 311. Spring; 312. Screen frame. Detailed Implementation

[0042] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0043] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0044] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0045] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0046] Example 1

[0047] Please see Figures 1-7 As shown, this embodiment is a coating powder grinding device, including,

[0048] The grinding structure 100 includes an outer cylinder 203, an inner cylinder 101 located inside the outer cylinder 203, a bearing seat 104 fixed at the upper end of the outer cylinder 203, a rotating shaft 103 rotatably inserted into the bearing seat 104 and having a hollow interior, a grinding body 112 located at the lower end of the rotating shaft 103, an annular liner 111 fixed to the inner wall of the inner cylinder 101, a rotating motor 105 fixed to one end of the bearing seat 104, a gear ring 107 sleeved on the outer wall of the rotating shaft 103, a gear ring 108 fixed to the inner wall at the upper end of the inner cylinder 101, and a gear 106 fixed to the lower end of the rotating motor 105 and meshing with the gear ring 107 and the gear ring 108.

[0049] The cooling structure 200 includes a water inlet pipe 202 and a water outlet pipe 201 rotatably mounted inside the upper end of the rotating shaft 103 and inside the lower end of the grinding body 112, a water chamber 1 204 located between the outer cylinder 203 and the inner cylinder 101, a water chamber 205 opened inside the grinding body 112, and a water inlet pipe 202 and a water outlet pipe 201 that penetrate the outer cylinder 203 and are located inside the water chamber 1 204.

[0050] The gap between the liner 111 and the grinding body 112 decreases from top to bottom. The upper end of the grinding body 112 is provided with a guide surface 113, and the outer wall of the outer cylinder 203 is provided with symmetrically distributed support frames 102.

[0051] The inner wall of the outer cylinder 203 is provided with two sets of sealing sleeves 116, and the outer walls of the upper and lower ends of the inner cylinder 101 are provided with connecting rings 110 that are rotatably installed inside the sealing sleeves 116.

[0052] The connecting ring 110 is provided with pressure rings 117 at both ends, and the inner wall of the inner cylinder 101 is provided with top rings 109 at both ends. The inner wall of the pressure ring 117 is rotatably equipped with balls 115 arranged in a ring array and rolling against the inner wall of the top ring 109. The inner wall of the top ring 109 is rotatably equipped with balls 114 arranged in a ring array and rolling against the outer wall of the pressure ring 117.

[0053] The cooling structure 200 is used;

[0054] During use, both the inlet pipe 202 and the outlet pipe are connected to a pump. The rotating motor 105 drives the gear 106 to rotate. The rotational installation of the inlet pipe 202 and one end of the outlet pipe with the rotating shaft 103 and the grinding cylinder ensures the stability of the inlet pipe 202 and one end of the outlet pipe when the grinding cylinder and the rotating shaft 103 rotate. The rotating motor 105 drives the gear 106 to rotate, pushing the gear ring 107 and gear ring 2 108, causing the rotating shaft 103 to rotate. The rotating shaft 103 drives the grinding body 112 to rotate. The grinding body 112 rotates relative to the inner cylinder 101, and the rotational speed of the inner cylinder 101 is lower than that of the grinding body 112, thus crushing the coating material. The coating material is gradually crushed by the liner 111 and the grinding body 112, which decrease in speed from top to bottom, thus achieving the grinding of the coating material. It is worth noting that the coating material delivered to the inner cylinder 101 is staggered from the structure of the gear 106, gear ring 107 and gear ring 2 108 to avoid increasing the wear of the driving components.

[0055] During the grinding process, cooling water is delivered into water chamber 1 204 and water chamber 2 205 through the water supply pipe. The cooling water cools the grinding body 112 and the liner 111, preventing the grinding body 112 and the liner 111 from continuously heating up, reducing the heat generated during the grinding process, and preventing the powder from clumping or deteriorating due to high temperature.

[0056] Example 2

[0057] Please see Figures 1-7 As shown, this embodiment further includes elements beyond those in embodiment 1;

[0058] as well as;

[0059] The screening structure 300 includes a screen frame 312 located below the inner cylinder 101, a screen mesh 305 located inside the screen frame 312, and a vibrating motor 308 fixed at the lower end of the screen frame 312.

[0060] The inner cylinder 101 has a guide hopper 302 located below the liner 111 at its lower end, and the screen frame 312 has an upper cover 304 at its upper end. A cloth sleeve 303 connects the upper cover 304 and the guide hopper 302.

[0061] A flow guide hood 307 is provided at the lower end of the screen frame 312, a discharge port 306 is provided at the lower end of the flow guide hood 307, and a discharge port 309 is provided on one side of the lower end of the screen frame 312.

[0062] Both sides of the screen frame 312 are provided with support frames 301. Both ends of the screen frame 312 are provided with springs 311 that are connected to the support frames 301 and are symmetrically distributed. Both ends of the screen frame 312 are provided with guide rods 310 that are located inside the springs 311 and slidably installed inside the support frames 301.

[0063] The screening structure 300 is used;

[0064] The ground paint powder is received by the guide bucket 302 and conveyed into the screen frame 312. The paint powder is screened by the screen 305, and larger particles are intercepted. The qualified paint powder is guided by the guide hood 307 and output from the discharge port 306. During this process, the vibrating motor 308 operates, and the oscillation force of the rotor acts on the spring 311, causing the spring 311 to vibrate, which in turn causes the screen frame 312 to vibrate. During the vibration of the screen frame 312, the flow of the paint powder on the screen 305 is improved, which helps the paint powder to be screened. The paint powder is screened efficiently after grinding, ensuring the quality of the ground paint powder.

[0065] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0066] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A coating powder grinding device, characterized in that: include, The grinding structure (100) includes an outer cylinder (203), an inner cylinder (101) located inside the outer cylinder (203), a bearing seat (104) fixed at the upper end of the outer cylinder (203), a rotating shaft (103) rotatably inserted into the bearing seat (104) and hollow inside, a grinding body (112) located at the lower end of the rotating shaft (103), a ring-shaped liner (111) fixed on the inner wall of the inner cylinder (101), a rotating motor (105) fixed at one end of the bearing seat (104), a gear ring one (107) sleeved on the outer wall of the rotating shaft (103), a gear ring two (108) fixed on the inner wall of the upper end of the inner cylinder (101), and a gear (106) fixed at the lower end of the rotating motor (105) and meshing with gear ring one (107) and gear ring two (108). The cooling structure (200) includes a water inlet pipe (202) and a water outlet pipe (201) rotatably mounted inside the upper end of the rotating shaft (103) and inside the lower end of the grinding body (112), a water chamber one (204) located between the outer cylinder (203) and the inner cylinder (101), a water chamber two (205) opened inside the grinding body (112), and a water inlet pipe (202) and a water outlet pipe (201) penetrating the outer cylinder (203) and located inside the water chamber one (204); as well as; The screening structure (300) includes a screen frame (312) located below the inner cylinder (101), a screen mesh (305) located inside the screen frame (312), and a vibrating motor (308) fixed at the lower end of the screen frame (312).

2. The coating powder grinding device according to claim 1, characterized in that: The gap between the liner (111) and the grinding body (112) decreases from top to bottom. The upper end of the grinding body (112) is provided with a flow guide surface (113), and the outer wall of the outer cylinder (203) is provided with symmetrically distributed support frames (102).

3. The coating powder grinding device according to claim 1, characterized in that: The inner wall of the outer cylinder (203) is provided with two sets of sealing sleeves (116), and the outer walls of the upper and lower ends of the inner cylinder (101) are provided with connecting rings (110) that are rotatably installed inside the sealing sleeves (116).

4. The coating powder grinding device according to claim 3, characterized in that: The connecting ring (110) is provided with pressure rings (117) at both ends, and the inner wall of the inner cylinder (101) is provided with top rings (109) at both ends. The inner wall of the pressure ring (117) is rotatably equipped with a second ball (115) arranged in a ring array and rolling against the inner wall of the top ring (109). The inner wall of the top ring (109) is rotatably equipped with a first ball (114) arranged in a ring array and rolling against the outer wall of the pressure ring (117).

5. The coating powder grinding device according to claim 1, characterized in that: The inner cylinder (101) has a flow guide hopper (302) located below the liner (111) at its lower end. The screen frame (312) has an upper cover (304) at its upper end. A cloth cover (303) connects the upper cover (304) and the flow guide hopper (302).

6. The coating powder grinding device according to claim 1, characterized in that: The lower end of the screen frame (312) is provided with a flow guide hood (307), the lower end of the flow guide hood (307) is provided with a discharge port (306), and the lower side of the screen frame (312) is provided with a discharge port (309).

7. The coating powder grinding device according to claim 1, characterized in that: The screen frame (312) is provided with support frame two (301) on both sides. The screen frame (312) is provided with springs (311) that are connected to support frame two (301) and are symmetrically distributed at both ends. The screen frame (312) is provided with guide rods (310) that are located inside springs (311) and slidably installed inside support frame two (301) at both ends.

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