Filter pressing mechanism for preparing spherical silicon resin micro powder

Abstract

The filter pressing mechanism comprises a base, a bottom groove and a top cover, the bottom groove is formed in the base, a containing cavity used for containing a filter cake is formed in the bottom groove, a gas inlet connected with a nitrogen source is formed in the top cover, a discharging port communicated with the containing cavity is formed in the bottom of the bottom groove, and a gas outlet communicated with the containing cavity is formed in the bottom of the bottom groove. A sealing mechanism is arranged between the bottom of the top cover and the bottom groove, the sealing mechanism comprises a concave sealing ring arranged on an inner ring of the bottom groove and a convex sealing ring arranged on an inner ring of the top cover, the sealing mechanism further comprises a positioning assembly, and the positioning assembly is used for positioning the concave sealing ring and the convex sealing ring to be meshed with each other. According to the sealing mechanism of the device, the top cover only needs to vertically cover the bottom groove, the concave sealing ring on the bottom groove and the convex sealing ring on the top cover are matched with each other to achieve rapid sealing, the top cover is rapidly locked through the positioning assembly, and compared with traditional bolt connection, the sealing performance is greatly improved, and the connecting and locking speed is high.

Description

Technical Field

[0001] The utility model relates to the technical field of polymer material preparation equipment, in particular to a pressure filtration mechanism for preparing spherical silicone resin micropowder. Background Technique

[0002] Spherical silicone resin micropowder is a new variety of silicone products developed in recent years. Due to its high hardness, high melting point, wear resistance, lubrication, non-toxic, odorless, transparent, shiny and other characteristics, and its stable structure and environmental friendliness, it is widely used as a filler or modifier for rubber, plastic, cosmetics, coatings, etc. Especially since its use as a light diffusing agent was discovered, with the rapid development of the LED industry, especially LED lighting, its market demand has increased rapidly.

[0003] At present, the process for preparing spherical silicone resin micropowder on the market is as follows: The silicone resin micropowder prepared by proportioning is placed in a pressure vessel and pressure-filtered with nitrogen. After no filtrate flows out, the filter cake is evaporated in a suitable environment to obtain the product. The container using nitrogen pressure filtration consists of two parts, the upper and the lower. When the filter cake is placed in the container, it is covered by a cover body. At present, the cover body and the bottom groove are connected by bolts around a circle. This connection method is not only cumbersome to fix and disassemble, but also the connection is not sealed and easy to relieve pressure. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a pressure filtration mechanism for preparing spherical silicone resin micropowder, and solves the problems put forward in the above background technique.

[0006] (II) Technical Solutions

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions: A pressure filtration mechanism for preparing spherical silicone resin micropowder, including a base, a bottom groove, and a top cover. The bottom groove is arranged on the base, the top cover can be covered on the bottom groove. A receiving cavity for placing the filter cake is arranged in the bottom groove. An air inlet connected to a nitrogen source is arranged on the top cover. A discharge port communicating with the receiving cavity is arranged at the bottom of the bottom groove. A sealing mechanism is arranged between the bottom of the top cover and the bottom groove. The sealing mechanism includes a concave sealing ring arranged on the inner ring of the bottom groove and a convex sealing ring arranged on the inner ring of the top cover. The sealing mechanism further includes a positioning component for positioning the mutual engagement of the concave sealing ring and the convex sealing ring.

[0008] Preferably, the positioning assembly includes a positioning ring groove, a plurality of positioning balls, a pressing ring, and a spring. The positioning ring groove is formed on the outer ring of the top cover. A plurality of ball grooves are circumferentially formed on the side wall of the bottom groove. The positioning balls are respectively accommodated in the ball grooves. The diameter of the ball groove is larger than that of the positioning ball. The inside and outside of the ball groove communicate with each other, and the diameter of the through port is smaller than that of the positioning ball. The pressing ring is vertically sleeved outside the bottom groove and is connected to the base through a spring at the bottom. The upper and lower sections of the inner ring of the pressing ring are respectively an upper section and a pressing section, and the pressing section can squeeze the positioning balls into the positioning ring groove.

[0009] Preferably, the positioning assembly further includes a cylinder. The cylinder is vertically arranged on the bracket, and the output end is connected to the pressing ring.

[0010] Preferably, a layer of filter cloth is arranged at the top of the accommodating cavity.

[0011] Preferably, the top cover is lifted and lowered through a lifting assembly.

[0012] Preferably, the lifting assembly includes a lifting plate, an electric push rod, a slideway, and a slider slidably fitted on the slideway. The slideway is vertically arranged. The slider is connected to the top cover. The electric push rod is vertically arranged, and the output end is connected to the top cover through the lifting plate.

[0013] (III) Beneficial effects

[0014] The utility model provides a pressure filtration mechanism for preparing spherical silicone resin micro-powder. It has the following

[0015] Beneficial effects:

[0016] 1. For the pressure filtration mechanism for preparing spherical silicone resin micro-powder, the sealing mechanism of this device only needs to vertically cover the top cover on the bottom groove, so that the concave sealing ring on the bottom groove and the convex sealing ring on the top cover cooperate with each other to achieve rapid sealing, and the top cover is quickly locked through the positioning assembly. Compared with the traditional bolt connection, not only the sealing performance is greatly improved, but also the connection and locking speed is fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an isometric view of the utility model;

[0018] Figure 2 is a schematic view of the bottom of the base of the utility model;

[0019] Figure 3 is a schematic view of the sealed state of the sealing mechanism of the utility model.

[0020] In the figure: 1 bottom groove, 2 accommodation cavity, 3 filter cloth, 4 top cover, 5 sealing mechanism, 6 electric push rod, 7 lifting plate, 8 air inlet, 9 slideway, 10 slider, 11 discharge port, 12 base, 13 cylinder, 51 concave sealing ring, 52 convex sealing ring, 53 positioning ring groove, 54 ball groove, 55 positioning ball, 56 extrusion ring, 57 spring, 58 extrusion section, 59 upper section. Specific implementation manner

[0021] An embodiment of the present utility model provides a pressure filtration mechanism for preparing spherical silicone resin micro-powder. As Figures 1-3 shown, it includes a base 12, a bottom groove 1, and a top cover 4. The bottom groove 1 is arranged on the base 12, the top cover 4 can be covered on the bottom groove 1, and the outer ring of the top cover 4 is in clearance fit with the inner ring of the bottom groove 1. An accommodation cavity 2 for placing a filter cake is arranged in the bottom groove 1, an air inlet 8 connected to a nitrogen source is provided on the top cover 4, and a nitrogen pump is detachably connected to the air inlet 8 through a hose. A discharge port 11 communicating with the accommodation cavity 2 is arranged at the bottom of the bottom groove 1, and a layer of filter cloth 3 is arranged at the top of the accommodation cavity 2. The prepared silicone resin micro-powder filter cake is placed on the filter cloth 3. During pressure filtration, the filtrate is discharged through the discharge port 11. The above is the existing nitrogen pressure filtration machine technology, and details will not be elaborated here.

[0022] As Figure 1 shown, the top cover 4 is lifted and lowered by a lifting assembly. The lifting assembly includes a lifting plate 7, an electric push rod 6, a slideway 9, and a slider 10 slidably fitted on the slideway 9. The slideway 9 is arranged vertically, the slider 10 is connected to the top cover 4, the electric push rod 6 is arranged vertically, and the output end is connected to the top cover 4 through the lifting plate 7. The top cover 4 is driven to lift and lower by the electric push rod 6. The electric push rod 6 can also be replaced by a lifting device such as a hydraulic cylinder that can achieve the same function.

[0023] As Figure 1 and Figure 3 shown, a sealing mechanism 5 is arranged between the bottom of the top cover 4 and the bottom groove 1. The sealing mechanism 5 includes a concave sealing ring 51 arranged on the inner ring of the bottom groove 1 and a convex sealing ring 52 arranged on the inner ring of the top cover 4. The sealing mechanism 5 further includes a positioning component for positioning the mutual engagement of the concave sealing ring 51 and the convex sealing ring 52. When the top cover 4 is completely covered on the bottom groove 1, the convex sealing ring 52 abuts against the recess of the concave sealing ring 51 to achieve the sealing between the top cover 4 and the bottom groove 1. The convex sealing ring 52 and the concave sealing ring 51 can be made of silica gel material.

[0024] As Figure 3As shown, the positioning component includes a positioning ring groove 53, eight positioning balls 55, a pressing ring 56, and a spring 57. The positioning ring groove 53 is formed on the outer ring of the top cover 4. Eight ball grooves 54 are circumferentially formed on the side wall of the bottom groove 1. The eight ball grooves 54 are equally angularly distributed around the center of the bottom groove 1. When the convex sealing ring 52 and the concave sealing ring 51 are fitted, the ball grooves 54 are flush with the positioning ring groove 53. The positioning balls 55 are respectively accommodated in the ball grooves 54. The diameter of the ball grooves 54 is larger than that of the positioning balls 55. The cross-section of the ball grooves 54 is a circle with the left and right two planes cut off. The inside and outside of the ball grooves 54 communicate with each other. The diameter of the through port is smaller than that of the positioning balls 55, so that the positioning balls 55 cannot leak out of the ball grooves 54, but can extend a certain distance to the left and right out of the ball grooves 54. When the positioning balls 55 are at the center of the ball grooves 54, a part of both the left and right ends of the positioning balls 55 is located outside the ball grooves 54. The pressing ring 56 is vertically sleeved outside the bottom groove 1 and is connected to the base 12 through a spring 57 at the bottom. The upper and lower two sections of the inner ring of the pressing ring 56 are respectively an upper section 59 and a pressing section 58. The inner diameter of the pressing section 58 has a clearance fit with the outer diameter of the bottom groove 1. The outer diameter of the upper section 59 is larger than the outer diameter of the bottom groove 1. The inner ring of the upper section 59 cannot contact the positioning balls 55. The pressing section 58 can squeeze the positioning balls 55 into the positioning ring groove 53.

[0025] The positioning component further includes a cylinder 13. The cylinder 13 is vertically arranged on the bracket and its output end is connected to the pressing ring 56.

[0026] Working principle: Before the top cover 4 is covered, the pressing ring 56 is pressed down by the cylinder 13 so that the upper section 59 corresponds to the positioning balls 55. Then, after the filter cake is placed, the top cover 4 is driven by the electric push rod 6 to cover the bottom groove 1. At this time, the convex sealing ring 52 abuts against the recess of the concave sealing ring 51, and the positioning balls 55 correspond to the positioning ring groove 53. Then the cylinder 13 drives the pressing ring 56 to rise, and the pressing section 58 is used to squeeze the positioning balls 55 inward into the positioning ring groove 53 to achieve positioning and prevent air leakage between the bottom groove 1 and the top cover 4.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure filtration mechanism for preparing spherical silicone resin fine powder, comprising a base (12), a bottom groove (1), and a top cover (4). The bottom groove (1) is arranged on the base (12), and the top cover (4) can be covered on the bottom groove (1). A containing cavity (2) for placing filter cake is arranged in the bottom groove (1). An air inlet (8) connected to a nitrogen source is provided on the top cover (4). A discharge port (11) communicated with the containing cavity (2) is arranged at the bottom of the bottom groove (1), and it is characterized in that: A sealing mechanism (5) is provided between the bottom of the top cover (4) and the bottom groove (1). The sealing mechanism (5) includes a concave sealing ring (51) provided on the inner ring of the bottom groove (1) and a convex sealing ring (52) provided on the inner ring of the top cover (4). The sealing mechanism (5) further includes a positioning assembly for positioning the engagement of the concave sealing ring (51) and the convex sealing ring (52).

2. The pressure filtration mechanism for preparing spherical silicone resin micropowder according to claim 1, characterized in that: The positioning assembly includes a positioning ring groove (53), a number of positioning balls (55), a pressing ring (56), and a spring (57). The positioning ring groove (53) is opened on the outer ring of the top cover (4). A number of ball grooves (54) are circumferentially opened on the side wall of the bottom groove (1). The positioning balls (55) are respectively accommodated in the ball grooves (54). The diameter of the ball groove (54) is larger than that of the positioning ball (55). The inside and outside of the ball groove (54) communicate with each other, and the diameter of the through port is smaller than that of the positioning ball (55). The pressing ring (56) is vertically sleeved outside the bottom groove (1), and the bottom is connected to the base (12) through a spring (57). The upper and lower sections of the inner ring of the pressing ring (56) are respectively an upper section (59) and a pressing section (58). The pressing section (58) can squeeze the positioning balls (55) into the positioning ring groove (53).

3. The pressure filtration mechanism for preparing spherical silicone resin micropowder according to claim 2, characterized in that: The positioning assembly further includes a cylinder (13). The cylinder (13) is vertically arranged on the bracket, and the output end is connected to the pressing ring (56).

4. The pressure filtration mechanism for preparing spherical silicone resin fine powder according to claim 1, characterized in that: A layer of filter cloth (3) is provided on the top of the accommodating cavity (2).

5. The pressure filtration mechanism for preparing spherical silicone resin micro-powder according to claim 1, characterized in that: The top cover (4) is lifted and lowered by a lifting assembly.

6. The pressure filtration mechanism for preparing spherical silicone resin micropowder according to claim 5, characterized in that: The lifting assembly includes a lifting plate (7), an electric push rod (6), a slideway (9), and a slider (10) slidably fitted on the slideway (9). The slideway (9) is vertically arranged. The slider (10) is connected to the top cover (4). The electric push rod (6) is vertically arranged, and the output end is connected to the top cover (4) through the lifting plate (7).

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