Ceramic wheel valve

Abstract

The utility model discloses a ceramic wheel valve which comprises a valve body, a round valve element assembly is installed in the middle of a cavity of the valve body, and a valve rod used for being in matched transmission with the round valve element assembly is arranged in the middle of the valve body. The circular valve element assembly comprises a clamping spring, a bevel tooth bushing and a valve element, the bevel tooth bushing is installed on the periphery of the valve element, and the clamping spring is arranged between the bevel tooth bushing and the valve element in a sleeved mode. And the bevel tooth bushing is matched with a bevel gear at the tail end of the valve rod to form gear vertical transmission. A plurality of first flow holes are evenly distributed in the center of the valve element. A positioning column is installed in the center of the right valve seat in the axis direction and penetrates into a center hole of the valve element. A plurality of second flow holes with the same size as the first flow holes are evenly distributed in the end face of the end, close to the round valve element assembly, of the right valve seat. Angular travel transmission is achieved through transmission of the tail end of the valve rod and the special-shaped bevel gear on the outer contour of the round valve element assembly, the size of the valve is reduced, and installation flexibility is improved. Through the design that the valve element and the right valve seat correspond to the flow holes, buffering of media is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel valves, in particular to a ceramic wheel valve. Background Art

[0002] Outdoor At present, in the coal chemical industry, silicon chemical industry, mining and metallurgy, electric power and environmental protection industries, many complex media are encountered. Especially when there are corrosive liquids and hard particles in the medium, it will cause the medium to have strong corrosion, erosion and wear characteristics. Commonly used valve cores and valve seats are subject to the material and structure themselves, and have poor erosion and corrosion resistance. After a period of use, the valve core and flow channel are severely worn, causing the valve to fail. High-frequency valve failures seriously affect the continuous production of enterprises and it is difficult to meet the needs of stable production of enterprises. Therefore, the industry urgently needs a valve that is both corrosion-resistant and wear-resistant, and can solve the erosion problem to solve these harsh working conditions. Utility Model Content

[0003] In order to solve the technical problems mentioned in the background technology, the utility model provides a ceramic wheel valve.

[0004] The utility model adopts the following technical scheme: a ceramic wheel valve, comprising a valve body, a left flange and a right flange; the left flange and the right flange are connected to the valve body by bolts; the cavity formed by the valve body, the left flange and the right flange is respectively equipped with a left valve seat and a right valve seat by a first positioning key and a second positioning key; a packing pressure plate is installed on the outside of the upper end of the valve body by bolts; a circular valve core assembly is installed in the middle of the cavity of the valve body, and the circular valve core assembly is clamped between the left valve seat and the right valve seat and forms a rotational fit with the two; the center lines of the left flange and the right flange, the left valve seat and the right valve seat, and the valve body and the circular valve core assembly are all on the same straight line; a valve stem for cooperating with the circular valve core assembly for transmission is provided in the middle of the valve body; the end of the valve stem vertically passes through the valve body, and its The center line is perpendicular to the center line of the circular valve core assembly; the circular valve core assembly includes a retaining spring, a bevel gear bushing and a valve core, the bevel gear bushing is installed on the outer periphery of the valve core, and the retaining spring is sleeved between the bevel gear bushing and the valve core; the bevel gear bushing cooperates with the bevel gear at the end of the valve stem to form a vertical gear transmission; a number of first flow holes are evenly arranged at the center of the valve core; a positioning column is installed along the axial direction of the center of the right valve seat; the positioning column penetrates into the center hole of the valve core; a number of second flow holes equal in size to the first flow holes are evenly arranged on the end surface of the right valve seat close to the circular valve core assembly; the circular valve core assembly rotates around the positioning column under the drive of the valve stem, so that the first flow hole and the second flow hole are aligned or staggered with each other to achieve flow control.

[0005] Furthermore, a disc spring is arranged between the left flange and the left valve seat.

[0006] Furthermore, a packing cavity for accommodating packing is formed between the valve stem and the upper side of the valve body; a packing pressure ring is arranged in the packing cavity.

[0007] Furthermore, a left flange liner is installed in the left flange, and a right flange liner is installed in the right flange; the left flange liner, right flange liner, left valve seat, valve core and right valve seat are all made of ceramic or corrosion-resistant alloy.

[0008] Furthermore, a first O-ring is installed between the left flange liner and the left valve seat; and a fifth O-ring is installed between the right flange liner and the right valve seat.

[0009] Furthermore, a fourth O-ring is installed between the circular valve core assembly, the right valve seat and the positioning column.

[0010] Furthermore, a second O-ring is installed between the circular valve core assembly and the left valve seat; and a third O-ring is installed between the circular valve core assembly and the right valve seat.

[0011] Compared with the prior art, the utility model has the following advantages: the ceramic wheel valve designed by the utility model realizes angular stroke transmission through the special-shaped bevel gear transmission of the valve stem end and the outer contour of the valve core assembly, reduces the valve volume and increases the installation flexibility. Through the corresponding porous design of the valve core and the right valve seat, the buffering of the medium is realized. Through the internal flange lining and the multiple sets of sealing rings between the valve seat and the valve core, the corrosion of the base metal parts by the medium can be effectively prevented, the service life of the valve is extended, the risk of valve core fragmentation is reduced, and the reliability is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic cross-sectional view of the ceramic wheel valve of the utility model;

[0013] Figure 2 It is a schematic diagram of the exploded structure of the circular valve core component of the utility model.

[0014] in:

[0015] 1-left flange, 2-left flange lining, 3-first O-ring, 4-front valve seat, 5-disc spring, 6-second O-ring, 7-first positioning key, 8-valve body, 9-round valve core assembly, 10-packing pressure ring, 11-third O-ring, 12-valve stem, 13-packing pressure plate, 14-packing group, 15-fourth O-ring, 16-second positioning key, 17-fifth O-ring, 18-positioning column, 19-rear valve seat, 20-right flange lining, 21-right flange;

[0016] 91 - retaining spring, 92 - tapered bushing, 93 - valve core, 94 - first flow hole. DETAILED DESCRIPTION

[0017] In order to facilitate those skilled in the art to understand the technical solution of the utility model, further description is now made with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model.

[0018] In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present invention. However, it is apparent that one or more embodiments may be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0019] like Figure 1-2 The figure shows a cross-sectional structural diagram of the ceramic wheel valve of the utility model, which includes a valve body 8, a left flange 1 and a right flange 21, and the left flange 1 and the right flange 21 are connected to the valve body 8 by bolts. The left valve seat 4 and the right valve seat 19 are respectively assembled in the cavity formed by the valve body 8, the left flange 1 and the right flange 21 through the first positioning key 7 and the second positioning key 16 to fix the radial and circumferential movements of the left valve seat 4 and the right valve seat 19. In specific implementation, a disc spring 5 is arranged between the left flange 1 and the left valve seat 4. A packing pressure plate 13 is installed on the outside of the upper end of the valve body 8 by bolts, and a packing cavity for accommodating packing is formed between the valve stem 12 and the upper side of the valve body 8, and a packing pressure ring 10 is arranged in the packing cavity. A circular valve core assembly 9 is installed in the middle of the cavity of the valve body 8, and the circular valve core assembly 9 is clamped between the left valve seat 4 and the right valve seat 19 and forms a rotational fit with the two. The center lines of the left flange 1 and the right flange 21, the left valve seat 4 and the right valve seat 19, the valve body 8 and the circular valve core assembly 9 are all on the same straight line. The middle of the valve body 8 is provided with a valve stem 12 for cooperating with the circular valve core assembly 9 for transmission. The end of the valve stem 12 vertically passes through the valve body 8, and its center line is perpendicular to the center line of the circular valve core assembly 9. Figure 2 The figure shows an exploded structural diagram of the circular valve core assembly of the utility model. The circular valve core assembly 9 includes a retaining spring 91, a bevel bushing 92 and a valve core 93. The bevel bushing 92 is mounted on the outer periphery of the valve core 93, and the retaining spring 91 is sleeved between the bevel bushing 92 and the valve core 93. The bevel bushing 92 cooperates with the bevel gear at the end of the valve stem 12 to form a gear vertical transmission. A plurality of first flow holes 94 are evenly arranged at the center of the valve core 93. A positioning column 18 is installed along the axial direction at the center of the right valve seat 19. The positioning column 18 penetrates into the central hole of the valve core 93. A plurality of second flow holes of the same size as the first flow holes 94 are evenly arranged at the end surface of the right valve seat 19 close to the circular valve core assembly 9. The circular valve core assembly 9 rotates around the positioning column 18 under the drive of the valve stem 12, so that the first flow holes 94 and the second flow holes are aligned or staggered with each other, so as to realize the angular stroke transmission mechanism and control the flow of the medium.

[0020] In this embodiment, a left flange liner 2 is installed in the left flange 1, and a right flange liner 20 is installed in the right flange 21. The left flange liner 2, the right flange liner 20, the left valve seat 4, the valve core 93 and the right valve seat 19 are all made of ceramic or corrosion-resistant alloy. In order to improve the overall sealing performance of the valve, in this embodiment, a first O-ring 3 is installed between the left flange liner 2 and the front valve seat 4, a fifth O-ring 17 is installed between the right flange liner 20 and the rear valve seat 19, a second O-ring 6 is installed between the circular valve core assembly 9 and the front valve seat 4, a third O-ring 11 is installed between the circular valve core assembly 9 and the rear valve seat 19, and a fourth O-ring 15 is installed between the circular valve core assembly 9, the rear valve seat 19 and the positioning column 18.

[0021] In summary, the ceramic wheel valve designed by the utility model realizes angular travel transmission through the special-shaped bevel gear transmission of the valve stem end and the outer contour of the valve core assembly, which reduces the valve volume and increases the installation flexibility. Through the corresponding porous design of the valve core and the right valve seat, the buffering of the medium is realized. Through the internal flange lining and the multiple sets of sealing rings between the valve seat and the valve core, the corrosion of the base metal parts by the medium can be effectively prevented, the service life of the valve is extended, the risk of valve core breakage is reduced, and the reliability is improved.

[0022] The above embodiments are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A ceramic wheel valve, characterized in that: The valve body (8) comprises a valve body (8), a left flange (1) and a right flange (21); the left flange (1) and the right flange (21) are connected to the valve body (8) by bolts; a left valve seat (4) and a right valve seat (19) are respectively assembled in the cavity formed by the valve body (8), the left flange (1) and the right flange (21) by means of a first positioning key (7) and a second positioning key (16); a packing pressure plate (13) is mounted on the outside of the upper end of the valve body (8) by means of bolts; a circular valve core assembly is mounted in the middle of the cavity of the valve body (8) (9), the circular valve core assembly (9) is clamped between the left valve seat (4) and the right valve seat (19) and forms a rotational fit with the two; the center lines of the left flange (1) and the right flange (21), the left valve seat (4) and the right valve seat (19) as well as the valve body (8) and the circular valve core assembly (9) are all on the same straight line; a valve stem (12) for cooperating with the circular valve core assembly (9) for transmission is provided in the middle of the valve body (8); the end of the valve stem (12) vertically passes through the valve body (8), and its center line is aligned with the circular valve core assembly (9). The center line of the core assembly (9) is vertical; the circular valve core assembly (9) includes a retaining spring (91), a bevel gear bushing (92) and a valve core (93); the bevel gear bushing (92) is installed on the outer periphery of the valve core (93), and the retaining spring (91) is sleeved between the bevel gear bushing (92) and the valve core (93); the bevel gear bushing (92) cooperates with the bevel gear at the end of the valve stem (12) to form a vertical gear transmission; a plurality of first flow holes (94) are evenly arranged at the center of the valve core (93); the right valve seat ( 19) is provided with a positioning column (18) along the axial direction at the center thereof; the positioning column (18) is inserted into the central hole of the valve core (93); a plurality of second flow holes of the same size as the first flow hole (94) are evenly arranged on the end surface of one end of the right valve seat (19) close to the circular valve core assembly (9); the circular valve core assembly (9) rotates around the positioning column (18) under the drive of the valve stem (12), so that the first flow hole (94) and the second flow hole are aligned or staggered with each other to realize flow control.

2. The ceramic wheel valve according to claim 1, characterized in that: A disc spring (5) is arranged between the left flange (1) and the left valve seat (4).

3. The ceramic wheel valve according to claim 2, characterized in that: A packing cavity for accommodating packing is formed between the valve stem (12) and the upper side of the valve body (8); a packing pressure ring (10) is arranged in the packing cavity.

4. The ceramic wheel valve according to claim 3, characterized in that: A left flange liner (2) is installed in the left flange (1), and a right flange liner (20) is installed in the right flange (21); the left flange liner (2), the right flange liner (20), the left valve seat (4), the valve core (93) and the right valve seat (19) are all made of ceramic or corrosion-resistant alloy.

5. The ceramic wheel valve according to claim 4, characterized in that: A first O-ring (3) is installed between the left flange liner (2) and the left valve seat (4); and a fifth O-ring (17) is installed between the right flange liner (20) and the right valve seat (19).

6. The ceramic wheel valve according to claim 5, characterized in that: A fourth O-ring (15) is installed between the circular valve core assembly (9), the right valve seat (19) and the positioning column (18).

7. The ceramic wheel valve according to claim 6, characterized in that: A second O-ring (6) is installed between the circular valve core component (9) and the left valve seat (4); and a third O-ring (11) is installed between the circular valve core component (9) and the right valve seat (19).

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