Adjusting valve body casting

Abstract

The invention relates to the technical field of castings, in particular to an adjusting valve body casting which comprises a body, an inlet is formed in the left end of the body in a one-time mode, an outlet is formed in the right end of the body in a one-time mode, an installation opening is formed in the top end of the body in a one-time mode, a pressure adjusting valve is installed in the installation opening, and a valve cavity is formed between the inlet and the outlet in a one-time mode. The inner end of the pressure regulating valve is located in the valve cavity, a first flowing cavity is formed between the bottom of the valve cavity and the inlet, a second flowing cavity is formed between the top of the valve cavity and the outlet, and in order to achieve the pressure relief function, the pressure regulating valve is simple in structure; in order to enable the control panel to be automatically opened, a power source of the control panel is ingeniously combined to the manual pressure regulating valve, the pressure regulating valve can manually regulate the pressure and the flow speed of the valve body, and when manual operation is not needed, the control panel is driven to automatically complete the opening action when the spring assembly in the stepped hole automatically induces that the pressure intensity of fluid rises.

Description

Technical Field

[0001] The invention relates to the technical field of castings, in particular to a regulating valve body casting. Background Art

[0002] In the automatic control of modern factories, regulating valves play a very important role. Common regulating valves are mostly pressure regulating valves, which are composed of a valve body casting and a valve stem installed on the valve body casting. The pressure or flow rate of the fluid flowing through the valve body can be adjusted by adjusting the valve stem. The structure of traditional valve body castings mainly considers the flow rate and overall strength.

[0003] However, when the flow rate of the fluid is high or the fluid pressure is high, in order to prevent the valve body casting from bursting, the valve stem on the valve body can only be manually adjusted to automatically relieve the pressure of the valve body. This pressure relief method is not only inefficient, but also difficult to achieve without human operation. Even if a pressure relief structure is provided on some types of valve bodies, the pressure relief structure needs to be separately provided on the side of the valve body, which is costly. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a regulating valve body casting, comprising a body, the left end of the body is once formed with an inlet, the right end is once formed with an outlet, the top end is once formed with an installation port, a pressure regulating valve is installed in the installation port, a valve cavity is once formed between the inlet and the outlet, the inner end of the pressure regulating valve is located in the valve cavity, a first flow cavity is formed between the bottom of the valve cavity and the inlet, a second flow cavity is formed between the top of the valve cavity and the outlet, a first port is formed in the first flow cavity, a second port is formed in the second flow cavity, a control plate is installed on the first port, the control plate is an arc plate, the arc surface of the control plate coincides with the arc cavity surface of the first flow cavity when the control plate is closed, and a branch pipe is connected between the first port and the second port;

[0005] The pressure regulating valve is a self-made valve, which is connected to the installation port by means of threads, and a stepped hole is opened upward from the bottom end of the pressure regulating valve, and a spring assembly is arranged in the stepped hole, and the spring assembly includes a lifting rod inserted into the stepped hole from the bottom upward, a lifting plate fixed on the lifting rod, and a spring sleeved on the lifting rod with both ends elastically abutting between the lifting plate and the top of the stepped hole, a reducing hole is arranged between the first flow cavity and the valve cavity, the bottom end of the lifting rod enters the first flow cavity through the reducing hole, and a hanging hole is opened at the bottom end of the lifting rod, a steel wire is connected to the hanging hole, and the steel wire is extended upward and connected to the control board, and an expansion port is opened at the bottom end of the pressure regulating valve, and the opening of the expansion port faces downward.

[0006] As further preferred, the second flow chamber is inclined downward and is located above the first flow chamber, and the opening direction of the second port is consistent with the inclined direction of the second flow chamber.

[0007] As further preferred, an expansion cavity is formed on a side of the first flow cavity away from the inlet, and an arc is formed at the connection between the bottom of the expansion cavity and the first flow cavity.

[0008] As further preferred, the expansion opening is trumpet-shaped, and its large end faces the first flow cavity.

[0009] As a further preferred embodiment, a guide column is formed in the first flow cavity at one time, and the guide column is located between the control plate and the bottom end of the lifting rod. The side of the control plate away from the inlet is connected to the first port through a hinge shaft. There are two guide columns, and both are located in the peripheral direction of the control plate. One guide column is close to the bottom end of the lifting rod, and the other guide column is located on the same side of the control plate. The steel wire passes through the two guide columns in turn and is connected to the inner surface of the control plate.

[0010] As further preferred, a detour portion is provided in the second flow cavity, the detour portion protrudes inward from the top of the cavity wall of the second flow cavity, and the second port is located between the detour portion and the outlet.

[0011] As a further preferred embodiment, a return spring is connected to the lumen of the branch pipe, the return spring is close to the control plate, and the other end of the return spring is connected to the inner wall surface of the control plate, and a rubber is provided on the outer circular surface of the control plate. When the control plate is rotated into the first port to close the first port, the rubber on its outer circular surface is sealed on the lumen wall of the branch pipe, and a limiting plate is fixed in the branch pipe, one end of the return spring located in the branch pipe is connected to the limiting plate, and the middle part of the limiting plate is communicated with the lumen of the branch pipe.

[0012] As a further preferred embodiment, a positioning plate is fixed in the expansion mouth, a drainage hole is provided on the positioning plate, the upper end of the drainage hole is communicated with the valve cavity, and the lower end of the drainage hole is communicated with the first flow cavity, a positioning hole is provided in the middle of the positioning plate, and the lifting rod passes downward through the positioning hole into the first flow cavity, the positioning hole is a polygon, the cross-sectional shape of the lifting rod is a polygon, the polygonal shape of the lifting rod matches the polygonal shape of the positioning hole, and a limit block located above the positioning plate is fixed on the lifting rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] A control plate is arranged in the valve body, and a branch pipe connecting the inlet and outlet ends is arranged outside. When the control plate is closed, the first port is covered, and the first port is the liquid inlet end of the branch pipe. Therefore, when the control plate is deflected inwardly, it is equivalent to opening the first port. The return spring is stretched as the control plate deflects inwardly, and part of the fluid in the valve cavity is released into the branch pipe through the first port, and then released into the second flow cavity from the other end of the branch pipe. After merging with the fluid being discharged in the second flow cavity, it is discharged toward the outlet end together, thereby rapidly reducing the fluid pressure in the valve body, ensuring that the strength of the valve body is not affected by the material of the casting. In addition to the above effects, the branch pressure relief assembly composed of the control panel and the branch pipe replaces the existing pressure relief valve. In order to realize automatic pressure relief of the valve body, there is no need to separately set a pressure relief valve on other parts of the valve body. In order to realize the pressure relief function, the structure of the present invention is simple; and in order to make the control panel open automatically, its power source is cleverly combined with the manual pressure regulating valve. In addition to being able to manually adjust the valve body pressure and flow rate, the pressure regulating valve can automatically sense the increase in fluid pressure through the spring assembly in the stepped hole when no manual operation is required, thereby driving the control panel to automatically complete the opening action. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the internal structure of a cross-sectioned regulating valve body casting provided in an embodiment of the present invention;

[0016] Figure 2 The regulating valve body casting provided in the embodiment of the present invention is composed of Figure 1 The enlarged schematic diagram of the A part is shown;

[0017] Figure 3 A schematic diagram of the back plane of a regulating valve body casting provided in an embodiment of the present invention;

[0018] Figure 4 A schematic top view of only the positioning plate in the valve body casting of the regulating valve provided in an embodiment of the present invention;

[0019] Figure 5 When the branch pipe in the valve body casting of the regulating valve provided in the embodiment of the present invention is partially cut open, its internal structure and the schematic diagram of the hinged structure with the control panel are viewed.

[0020] In the figure: 1. body; 2. inlet; 3. outlet; 4. installation port; 5. pressure regulating valve; 6. valve chamber; 7. first flow chamber; 8. second flow chamber; 9. first port; 10. second port; 11. control board; 12. branch pipe; 13. stepped hole; 14. spring assembly; 15. lifting rod; 16. lifting plate; 17. spring; 18. variable diameter hole; 19. hanging hole; 20. steel wire; 21. expansion port; 22. expansion chamber; 23. arc; 24. guide column; 25. detour; 26. reset spring; 27. rubber; 28. positioning plate; 29. ​​drainage hole; 30. positioning hole; 31. limiting plate; 32. limit block. DETAILED DESCRIPTION

[0021] The above and other embodiments and advantages of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0022] In one embodiment, Figure 1-Figure 5 As shown:

[0023] The present embodiment provides a regulating valve body casting, comprising a body 1, an inlet 2 is formed at the left end of the body 1, an outlet 3 is formed at the right end, a mounting port 4 is formed at the top, a pressure regulating valve 5 is installed in the mounting port 4, a valve cavity 6 is formed between the inlet 2 and the outlet 3, the inner end of the pressure regulating valve 5 is located in the valve cavity 6, a first flow cavity 7 is formed between the bottom of the valve cavity 6 and the inlet 2, a second flow cavity 8 is formed between the top of the valve cavity 6 and the outlet 3, a first port 9 is formed in the first flow cavity 7, an extension cavity 22 is formed on the side of the first flow cavity 7 away from the inlet 2, an arc 23 is formed at the connection between the bottom of the extension cavity 22 and the first flow cavity 7, a second port 10 is formed in the second flow cavity 8, a control board 11 is installed on the first port 9, the control board 11 is an arc-shaped board, and its arc surface coincides with the arc cavity surface of the first flow cavity 7 when the control board 11 is closed, and a branch pipe 12 is connected between the first port 9 and the second port 10;

[0024] The pressure regulating valve 5 is a self-made valve, which is connected to the mounting port 4 by means of threads. A stepped hole 13 is opened upward from the bottom end of the self-pressure regulating valve 5, and a spring assembly 14 is arranged in the stepped hole 13. The spring assembly 14 comprises a lifting rod 15 inserted into the stepped hole 13 from the bottom upward, a lifting plate 16 fixed on the lifting rod 15, and a spring 17 sleeved on the lifting rod 15 and elastically abutting between the lifting plate 16 and the top of the stepped hole 13 at both ends. A reducing hole 18 is arranged between the first flow chamber 7 and the valve chamber 6. The bottom end of the lifting rod 15 enters the first flow chamber 7 through the reducing hole 18, and a hanging hole 19 is opened at the bottom end of the lifting rod 15. A steel wire 20 is connected to the hanging hole 19, and the steel wire 20 is connected to the control board 11 after extending upward. An expansion port 21 is opened at the bottom end of the pressure regulating valve 5, and the opening of the expansion port 21 faces downward.

[0025] When in use, the water inlet pipe is connected to the inlet 2, and the water outlet pipe is connected to the outlet 3. The fluid flows from the inlet 2 to the first flow chamber 7 of the valve chamber 6, and then flows upward from the variable hole 18 to the second flow chamber 8, and finally is discharged outward through the outlet 3 at the end of the second flow chamber 8. The pressure regulating valve 5 is rotated to make the bottom end of the pressure regulating valve 5 drop, so that the bottom end of the pressure regulating valve 5 is close to the variable hole 18, thereby reducing the discharge amount of the variable hole 18, and the fluid discharged from the variable hole 18 to the second flow chamber 8 becomes smaller, thereby completing the regulation. In addition, due to the influence of the pipeline and the fluid speed, when the fluid pressure entering the first flow chamber 7 is high, these fluids will release the displacement upward in a short time. When the liquid pressure of the displacement is greater than the supporting force of the bottom end of the spring 17 on the lifting plate 16, the lifting plate 16 will rise, and at the same time, the lifting rod 15 will rise, and the lifting rod 15 will rise with the hanging hole 19, and the hanging hole 19 will drag the steel wire 20 upward, and the steel wire 20 will drag the control plate 11 inward, so that the control plate 11 is deflected inward. Since the control plate 11 is closed, it covers the first port 9. , and the first port 9 is the liquid inlet end of the branch pipe 12, so when the control plate 11 deflects inward, it is equivalent to opening the first port 9, and the return spring 26 is stretched as the control plate 11 deflects inward. Part of the fluid in the valve chamber 6 is released into the branch pipe 12 through the first port 9, and then released into the second flow chamber 8 from the other end of the branch pipe 12, and after merging with the fluid being discharged in the second flow chamber 8, it is discharged together toward the outlet 3 end, so that the fluid pressure in the valve body 1 is quickly reduced, ensuring that the strength of the valve body 1 will not be affected by the material of the casting (such as ductile iron, etc.). In addition to the above effects, the branch pressure relief assembly composed of the control panel 11 and the branch pipe 12 replaces the existing pressure relief valve. In order to realize automatic pressure relief of the valve body 1, there is no need to separately set a pressure relief valve on other parts of the valve body 1 (for example, beside the pressure regulating valve 5). In order to realize the pressure relief function, the structure of the present invention is simple; and in order to make the control panel 11 open automatically, its power source is cleverly combined with the manual pressure regulating valve 5. In addition to being able to manually adjust the pressure and flow rate of the valve body 1, the pressure regulating valve 5 can automatically sense the increase in fluid pressure through the spring assembly 14 in the stepped hole 13 when no manual operation is required, thereby driving the control panel 11 to automatically complete the opening action.

[0026] After the pressure is relieved, the spring 17 rebounds downward and pushes the lifting rod 15 downward through the lifting plate 16, the steel wire 20 relaxes, and the return spring 26 releases its length forward, pulling the control panel 11 back and closing it.

[0027] The control board 11 is connected to the lifting rod 15 through the steel wire 20, so that after the pressure regulating valve 5 is assembled on the valve body 1, the additional spring assembly 14, an additional accessory, can also be assembled into the valve cavity 6, thereby improving the assembly efficiency; in order to make the assembly of various accessories more convenient, the front and rear halves of the casting mold are respectively poured with solution into the two molds, and the front and rear parts of the valve body 1 are obtained after molding, and then the front and rear parts of the valve body 1 are welded together after the accessories are assembled.

[0028] An expansion port 21 is provided at the bottom end of the pressure regulating valve 5. The expansion port 21 is trumpet-shaped, and its large end faces the first flow chamber 7. The expansion port 21 can better receive the fluid. When the fluid is discharged upward through the variable diameter hole 18, it will be more easily collected by the expansion port 21. In addition, the pressure provided by the fluid when it is discharged upward is collected by the expansion port 21 and quickly concentrated on the lifting plate 16. The pressure reflected in a short time is concentrated on the lifting plate 16 in a short time. If the pressure is relatively large, the lifting plate 16 can be pushed up in a short time, and the lifting plate 16 pushes the lifting rod 15 to rise in a short time, and the control plate 11 is opened by the steel wire 20 in a short time, thereby improving the pressure relief speed of the fluid in the valve body 1.

[0029] like Figure 1 As shown, the second flow chamber 8 is inclined downward and is located above the first flow chamber 7. The opening direction of the second port 10 is consistent with the inclined direction of the second flow chamber 8. The fluid discharged into the second flow chamber 8 through the branch pipe 12 is not only discharged together with the fluid in the second flow chamber 8, but also prevented from flowing back due to the inclination of the second flow chamber 8 toward the outlet 3. Similarly, Figure 1 As shown, a detour portion 25 is provided in the second flow chamber 8, the detour portion 25 protrudes inward from the top of the chamber wall of the second flow chamber 8, and the second port 10 is located between the detour portion 25 and the outlet 3. When the depressurized fluid enters the second flow chamber 8 from the second port 10, in addition to being directly discharged by utilizing the inclination of the second flow chamber 8 toward the outlet 3, the detour portion 25 is also utilized to further reduce fluid reflux.

[0030] like Figure 1As shown, a guide column 24 is formed in the first flow chamber 7 at one time. The guide column 24 is located between the control plate 11 and the bottom end of the lifting rod 15. The side of the control plate 11 away from the inlet 2 is connected to the first port 9 through a hinge shaft. There are two guide columns 24, both of which are located in the peripheral direction of the control plate 11. One guide column 24 is close to the bottom end of the lifting rod 15, and the other guide column 24 is located on the same side of the control plate 11. The steel wire 18 passes through the two guide columns 24 in sequence and is connected to the inner surface of the control plate 11. When the lifting rod 15 drags the control plate 11 through the steel wire 18, the direction of the steel wire 18 is limited by the guide column 24, ensuring that the open side of the control plate 11 faces the inlet 2 when it rotates, ensuring that part of the fluid flows directly into the branch pipe 12 from the water inlet side, and when the fluid pressure in the first flow chamber 7 is not eliminated, the subsequent fluid directly enters the branch pipe 12, thereby improving the pressure relief efficiency.

[0031] like Figure 5 As shown, a return spring 26 is connected to the lumen of the branch pipe 12, the return spring 26 is close to the control plate 11, and the other end of the return spring 26 is connected to the inner wall surface of the control plate 11. A rubber 27 is provided on the outer circumferential surface of the control plate 11. When the control plate 11 rotates to the first port 9 to close the first port 9, the rubber 27 on the outer circumferential surface is sealed on the lumen wall of the branch pipe 12. A limiting plate 31 is fixed in the branch pipe 12. One end of the return spring 26 located in the branch pipe 12 is connected to the limiting plate 31, and the middle part of the limiting plate 31 is connected to the lumen of the branch pipe 12. When the control plate 11 is opened under the drag of the steel wire 18, the return spring 26 is stretched and lengthened along the opening direction of the control plate 11. On the contrary, when the steel wire 18 is relaxed, the return spring 26 shrinks and shortens and pulls the control plate 11 back, and the first port 9 is automatically closed by the close relationship between the rubber 27 and the inner wall of the first port 9.

[0032] like Figures 1 to 4 As shown, a positioning plate 28 is fixed in the expansion opening 27, and a drainage hole 29 is provided on the positioning plate 28. The upper end of the drainage hole 29 is communicated with the valve chamber 6, and the lower end of the drainage hole 29 is communicated with the first flow chamber 7. A positioning hole 30 is provided in the middle of the positioning plate 28, and the lifting rod 15 passes downward through the positioning hole 30 to enter the first flow chamber 7. The positioning hole 30 is a polygon, and the cross-sectional shape of the lifting rod 15 is a polygon. The polygonal shape of the lifting rod 15 matches the polygonal shape of the positioning hole 30. When the pressure regulating valve 5 is manually adjusted in height, the lifting rod 15 will not rise and fall with it, and the lifting rod 15 will not rotate under the restriction of the positioning hole 30, and the steel wire 18 will not be knotted, and the structure is reasonable. The drainage hole 29 is provided on the positioning plate 28, which will not affect the normal discharge of fluid from the first flow chamber 7 to the second flow chamber 8, and the positioning plate 28 also has a filtering effect by using the drainage hole 29.

[0033] The above orientation designations do not represent the specific orientations of the components in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme, and the orientations are described relatively with reference to the figures. In essence, the specific orientations of the components are described according to their actual installation and actual use as well as the customary orientations of technicians in this field. This is hereby explained.

[0034] The specific implementation methods described above further describe the invention purpose, technical solutions, and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the protection scope of the present invention. It is particularly pointed out that for those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The valve body casting of the regulating valve is characterized by: The invention comprises a body (1), wherein the left end of the body (1) is once-molded with an inlet (2), the right end is once-molded with an outlet (3), the top end is once-molded with an installation port (4), a pressure regulating valve (5) is installed in the installation port (4), a valve cavity (6) is once-molded between the inlet (2) and the outlet (3), the inner end of the pressure regulating valve (5) is located in the valve cavity (6), a first flow cavity (7) is molded between the bottom of the valve cavity (6) and the inlet (2), and the top of the valve cavity (6) is A second flow chamber (8) is formed between the first portion and the outlet (3); a first port (9) is formed in the first flow chamber (7); a second port (10) is formed in the second flow chamber (8); a control plate (11) is mounted on the first port (9); the control plate (11) is an arc-shaped plate; when the control plate (11) is closed, its arc-shaped surface coincides with the arc-shaped cavity surface of the first flow chamber (7); and a branch pipe (12) is connected between the first port (9) and the second port (10); The pressure regulating valve (5) is a self-made valve. The pressure regulating valve (5) is connected to the mounting port (4) by means of threads. A stepped hole (13) is provided upward from the bottom end of the pressure regulating valve (5). A spring assembly (14) is provided in the stepped hole (13). The spring assembly (14) comprises a lifting rod (15) inserted into the stepped hole (13) from the bottom upward, a lifting plate (16) fixed on the lifting rod (15), and a lifting plate (16) sleeved on the lifting rod (15) and elastically abutting at both ends between the lifting plate (16) and the stepped hole (13). ) between the top and bottom of the pressure regulating valve (5), a reducing hole (18) is provided between the first flow chamber (7) and the valve chamber (6), the bottom end of the lifting rod (15) enters the first flow chamber (7) through the reducing hole (18), and a hanging hole (19) is provided at the bottom end of the lifting rod (15), a steel wire (20) is connected to the hanging hole (19), and the steel wire (20) is connected to the control board (11) after extending upward, and an expansion port (21) is provided at the bottom end of the pressure regulating valve (5), and the opening of the expansion port (21) faces downward.

2. The regulating valve body casting according to claim 1, characterized in that: The second flow chamber (8) is inclined downward and is located above the first flow chamber (7), and the opening direction of the second port (10) is consistent with the inclination direction of the second flow chamber (8).

3. The regulating valve body casting according to claim 2, characterized in that: An expansion cavity (22) is formed on a side of the first flow cavity (7) away from the inlet (2), and a circular arc (23) is formed at the connection between the bottom of the expansion cavity (22) and the first flow cavity (7).

4. The regulating valve body casting according to claim 3, characterized in that: The expansion opening (21) is trumpet-shaped, and its large end faces the first flow chamber (7).

5. The regulating valve body casting according to claim 4, characterized in that: A guide column (24) is formed in the first flow chamber (7) at one time. The guide column (24) is located between the control plate (11) and the bottom end of the lifting rod (15). The side of the control plate (11) away from the inlet (2) is connected to the first port (9) through a hinge. There are two guide columns (24), and both are located in the peripheral direction of the control plate (11). One guide column (24) is close to the bottom end of the lifting rod (15), and the other guide column (24) is located on the same side of the control plate (11) as the connection. The steel wire (18) passes through the two guide columns (24) in sequence and is connected to the inner surface of the control plate (11).

6. The regulating valve body casting according to claim 5, characterized in that: A detour portion (25) is provided in the second flow chamber (8), the detour portion (25) protruding inwardly from the top of the chamber wall of the second flow chamber (8), and the second port (10) is located between the detour portion (25) and the outlet (3).

7. The regulating valve body casting according to claim 6, characterized in that: A return spring (26) is connected to the lumen of the branch pipe (12), the return spring (26) is close to the control plate (11), and the other end of the return spring (26) is connected to the inner wall surface of the control plate (11). A rubber (27) is provided on the outer circumferential surface of the control plate (11). When the control plate (11) rotates into the first port (9) to close the first port (9), the rubber (27) on the outer circumferential surface is sealed on the lumen wall of the branch pipe (12). A limiting plate (31) is fixed in the branch pipe (12), one end of the return spring (26) located in the branch pipe (12) is connected to the limiting plate (31), and the middle part of the limiting plate (31) is communicated with the lumen of the branch pipe (12).

8. The regulating valve body casting according to claim 7, characterized in that: A positioning plate (28) is fixed in the expansion opening (27), and a drainage hole (29) is provided on the positioning plate (28). The upper end of the drainage hole (29) is communicated with the valve cavity (6), and the lower end of the drainage hole (29) is communicated with the first flow cavity (7). A positioning hole (30) is provided in the middle of the positioning plate (28), and the lifting rod (15) passes downward through the positioning hole (30) and enters the first flow cavity (7). The positioning hole (30) is polygonal, and the cross-sectional shape of the lifting rod (15) is polygonal. The polygonal shape of the lifting rod (15) matches the polygonal shape of the positioning hole (30), and a limit block (32) located above the positioning plate (28) is fixed on the lifting rod (15).

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