High-frequency V-shaped ball valve for ACM device

Abstract

The utility model relates to a high-frequency V-shaped ball valve for an ACM device. The high-frequency V-shaped ball valve comprises a valve body, a valve cavity is formed in the valve body, a valve ball is arranged in the valve cavity, a valve rod hole is formed in the upper end of the valve body, and a valve rod is arranged in the valve rod hole; a spline shaft rod is arranged at the lower end of the valve rod, a connecting hole capable of being matched with the spline shaft rod is formed in the upper end of the valve ball, and a special-shaped key is arranged between the spline shaft rod and the connecting hole. A valve seat is arranged on one side of the valve cavity, and a soft seat ring is arranged between the valve seat and the valve ball. A pressing ring is arranged on one side of the valve body, and a belleville spring is arranged between the pressing ring and the valve seat. The combination of the spline shaft rod and the special-shaped key is utilized, so that a dual-positioning structure is formed between the valve rod and the valve ball, the fit clearance in the transmission process of the valve rod and the valve ball can be effectively eliminated, the following property of the valve ball is improved, the high-frequency and high-speed opening and closing function of the valve is realized, and the service life of the valve is longer; the soft seat ring is arranged on the valve seat, and the valve seat and the soft seat ring are combined, so that the sealing effect between the valve ball and the valve body is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves and relates to a high-frequency V-shaped ball valve for an ACM device. Background Art

[0002] With the increasing consumption of building pipelines, decorative parts for airplanes and cars, special-shaped building materials, etc., the production of such products, which were originally formed by metal processing, has expanded rapidly in my country under the background of new materials, especially polymer substitution. Among the devices for producing polymers, the ACM device is one of the main devices built in recent years. Its increased production capacity will effectively supplement the social demand for polymer products, reduce the social consumption of metal raw materials, and also significantly reduce the production costs of the above products. The products of the ACM device need to accurately control the material ratio before the production process, and the high-frequency V-shaped ball valve is the key equipment that can meet the frequent switching and cutting and can accurately adjust the material conveying volume. However, in actual use, the valve stem and the valve ball of the high-frequency V-shaped ball valve frequently move, which is easy to cause friction loss and shaking for a long time, and there is a problem of inaccurate movement. Summary of the invention

[0003] The utility model aims to overcome the deficiencies in the prior art, solve the problem of friction loss between a valve stem and a valve ball of a high-frequency V-shaped ball valve, and provide a high-frequency V-shaped ball valve for an ACM device.

[0004] In order to achieve the above purpose, the following technical solutions are adopted:

[0005] The high-frequency V-shaped ball valve for an ACM device comprises a valve body, a valve stem, a valve ball and a valve seat, wherein a valve cavity is provided in the valve body, a valve ball is arranged in the valve cavity, a valve stem hole is provided at the upper end of the valve body, a valve stem is arranged in the valve stem hole; a spline shaft is provided at the lower end of the valve stem, a connecting hole capable of matching with the spline shaft is provided at the upper end of the valve ball, and a special-shaped key is provided between the spline shaft and the connecting hole; a valve seat is provided at one side of the valve cavity, and a soft seat ring is provided between the valve seat and the valve ball; a pressure ring is provided at one side of the valve body, and a disc spring is provided between the pressure ring and the valve seat; a bottom shaft is provided at the lower end of the valve body, and a fixing hole capable of matching with the bottom shaft is provided at the lower end of the valve ball.

[0006] Preferably, a threaded hole is provided on one side of the valve body, the pressure ring is threaded into the threaded hole, and a dust ring is provided between the pressure ring and the valve seat.

[0007] Preferably, a sealing ring is provided between the valve seat and the valve body.

[0008] Preferably, a lower bushing is provided between the bottom shaft and the fixing hole.

[0009] Preferably, an upper bushing is arranged between the inner side wall of the lower section of the valve stem hole and the valve stem; a sealing packing is arranged between the inner side wall of the upper section of the valve stem hole and the valve stem, a packing gland is arranged at the upper end of the sealing packing, a packing pressure plate is arranged at the upper end of the packing gland, and the packing pressure plate is fixed to the valve body by bolts.

[0010] Preferably, a fixing pin is provided between the valve ball and the valve stem.

[0011] Preferably, a bottom shaft hole is opened at the lower end of the valve body, the bottom shaft is inserted into the bottom shaft hole and fixed by a bottom flange, and a spiral wound gasket is arranged between the bottom flange and the valve body.

[0012] Preferably, the valve ball is a double eccentric structure, and a V-shaped window is provided on the valve ball.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] The utility model utilizes a combination of a spline shaft and a special-shaped key to provide a double positioning structure between the valve stem and the valve ball, which can effectively eliminate the matching clearance between the valve stem and the valve ball during transmission, improve the followability of the valve ball, realize the high-frequency and rapid switching function of the valve, and extend the service life of the valve; a soft seat ring is arranged on the valve seat, and the valve seat and the soft seat ring are combined to achieve a better sealing effect between the valve ball and the valve body, and when the soft seat ring is slightly worn, the valve seat can also realize the cut-off function. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front cross-sectional schematic diagram of the utility model.

[0016] Figure 2 This is a schematic diagram of the valve body structure of the utility model.

[0017] Figure 3 This is a schematic diagram of the valve seat structure of the utility model.

[0018] Figure 4 This is a schematic diagram of the valve ball structure of the utility model.

[0019] Figure 5 This is a schematic diagram of the valve ball structure of the utility model.

[0020] In the figure: 1. valve body; 2. valve stem; 3. valve ball; 4. valve seat; 5. valve chamber; 6. valve stem hole; 7. spline shaft; 8. connecting hole; 9. special-shaped key; 10. soft seat ring; 11. pressure ring; 12. disc spring; 13. bottom shaft; 14. fixing hole; 15. threaded hole; 16. dust ring; 17. sealing ring; 18. lower bushing; 19. upper bushing; 20. sealing packing; 21. packing gland; 22. packing pressure plate; 23. bolt; 24. fixing pin; 25. bottom shaft hole; 26. bottom flange; 27. spiral wound gasket; 28. V-shaped window. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0022] like Figure 1-Figure 5 As shown, a high-frequency V-shaped ball valve for an ACM device comprises a valve body 1, a valve stem 2, a valve ball 3 and a valve seat 4. A valve cavity 5 is provided in the valve body 1, and a valve ball 3 is arranged in the valve cavity 5. The valve ball 3 cooperates with the valve body 1 to control the on-off of the valve.

[0023] A valve stem hole 6 is formed at the upper end of the valve body 1, and a valve stem 2 is disposed in the valve stem hole 6. The valve stem 2 is used to control the rotation of the valve ball 3.

[0024] A spline shaft 7 is provided at the lower end of the valve stem 2, and a connecting hole 8 that can cooperate with the spline shaft 7 is provided at the upper end of the valve ball 3. A special-shaped key 9 is provided between the spline shaft 7 and the connecting hole 8. Through the cooperation of the spline shaft 7 and the connecting hole 8, and the installation of the special-shaped key 9, a double positioning structure is provided between the valve stem 2 and the valve ball 3, which can effectively eliminate the matching clearance between the valve stem 2 and the valve ball 3 during the transmission process, improve the followability of the valve ball 3, realize the high-frequency and rapid switching function of the valve, and improve the adjustment accuracy of the valve;

[0025] A valve seat 4 is provided on one side of the valve cavity 5, and a soft seat ring 10 is provided between the valve seat 4 and the valve ball 3. The soft seat ring 10 can be made of PEEK material (having both processing toughness and corrosion resistance). The combination of the valve seat 4 and the soft seat ring 10 makes the sealing effect between the valve ball 5 and the valve body 1 better. When the soft seat ring 10 is slightly worn, the valve seat 4 can also realize the cut-off function, and the valve meets the fire protection requirements;

[0026] A pressure ring 11 is provided on one side of the valve body 1, and a disc spring 12 is provided between the pressure ring 11 and the valve seat 4. The disc spring 12 keeps the valve seat 4 and the valve ball 3 tight; a bottom shaft 13 is provided at the lower end of the valve body 1, and a fixing hole 14 that can cooperate with the bottom shaft 13 is opened at the lower end of the valve ball 3.

[0027] Furthermore, a threaded hole 15 is provided on one side of the valve body 1 , the pressing ring 11 is screwed into the threaded hole 15 , and a dust ring 16 is provided between the pressing ring 11 and the valve seat 4 , and the dust ring 16 prevents dust from entering the valve seat 4 .

[0028] Furthermore, a sealing ring 17 is provided between the valve seat 4 and the valve body 1 , and the sealing ring 17 prevents leakage between the valve seat 4 and the valve body 1 .

[0029] Furthermore, a lower bushing 18 is provided between the bottom shaft 13 and the fixing hole 14 , and the lower bushing 18 reduces the friction between the bottom shaft 13 and the valve ball 3 , thereby increasing the service life.

[0030] Furthermore, an upper bushing 19 is arranged between the inner side wall of the lower section of the valve stem hole 6 and the valve stem 2; a sealing packing 20 is arranged between the inner side wall of the upper section of the valve stem hole 6 and the valve stem 2, a packing gland 21 is arranged at the upper end of the sealing packing 20, a packing pressure plate 22 is arranged at the upper end of the packing pressure cover 21, and the packing pressure plate 22 is fixed to the valve body 1 by bolts 23; the sealing packing 20 prevents leakage between the valve stem 2 and the valve body 1.

[0031] Furthermore, a fixing pin 24 is provided between the valve ball 3 and the valve stem 2, and the fixing pin 24 connects the valve stem 2 and the valve ball 3 as one, so that the valve stem 2 has a blow-out prevention function.

[0032] Furthermore, a bottom shaft hole 25 is opened at the lower end of the valve body 1, the bottom shaft 13 is inserted into the bottom shaft hole 25 and fixed by a bottom flange 26, and a winding gasket 27 is arranged between the bottom flange 26 and the valve body 1, and the winding gasket 27 improves the sealing effect between the bottom flange 26 and the valve body 1.

[0033] Furthermore, the valve ball 3 is a double eccentric structure, the rotation center is eccentrically set to the geometric center of the valve ball 3, the valve ball 3 and the valve seat 4 are in zero contact except for the instantaneous contact at the switch, and the operating torque required by the valve is small; and the cam bending motion generated by the double eccentric setting can make the sealing specific pressure formed by the valve ball 3 and the valve seat 4 at the moment of contact all transmitted by the output torque of the actuator through the valve stem 2, which is a mechanical forced seal, ensuring the reliable sealing of the valve;

[0034] A V-shaped window 28 is provided on the valve ball 3. The V-shaped window 28 controls the change of flow rate during the switching process of the valve ball 3, so that the valve has an equal percentage regulation characteristic.

[0035] Furthermore, the outer edges of the valve stem 2 and the bottom shaft 13 are sprayed with tungsten carbide, and the upper bushing 19 and the lower bushing 18 are formed by processing with STELLITE material;

[0036] Working principle: The utility model utilizes a double eccentrically arranged valve ball 3 to reduce the operating torque required for the valve. Through the cooperation of the spline shaft 7 and the special-shaped key 9, a double positioning structure is provided between the valve stem 2 and the valve ball 3, which can effectively eliminate the matching clearance between the valve stem 2 and the valve ball 3 during the transmission process, improve the followability of the valve ball 3, realize the high-frequency and rapid switching function of the valve, and improve the adjustment accuracy of the valve; with the fixing pin 20, the valve stem 2 has an anti-blowout function; a soft seat ring 10 is provided on the valve seat 4, and the combination of the valve seat 4 and the soft seat ring 10 makes the sealing effect between the valve ball 5 and the valve body 1 better. When the soft seat ring 10 is slightly worn, the valve seat 4 can also realize the cut-off function and make the valve meet the fire protection requirements.

[0037] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A high-frequency V-shaped ball valve for an ACM device, comprising a valve body (1), a valve stem (2), a valve ball (3) and a valve seat (4), wherein: The valve body (1) is provided with a valve cavity (5), a valve ball (3) is arranged in the valve cavity (5), a valve stem hole (6) is provided at the upper end of the valve body (1), and a valve stem (2) is arranged in the valve stem hole (6); a spline shaft (7) is provided at the lower end of the valve stem (2), a connecting hole (8) capable of cooperating with the spline shaft (7) is provided at the upper end of the valve ball (3), and a special-shaped key (9) is provided between the spline shaft (7) and the connecting hole (8); a valve seat (4) is provided on one side of the valve cavity (5), and a soft seat ring (10) is provided between the valve seat (4) and the valve ball (3); a pressure ring (11) is provided on one side of the valve body (1), and a disc spring (12) is provided between the pressure ring (11) and the valve seat (4); a bottom shaft (13) is provided at the lower end of the valve body (1), and a fixing hole (14) capable of cooperating with the bottom shaft (13) is provided at the lower end of the valve ball (3).

2. The high-frequency V-shaped ball valve for an ACM device according to claim 1 is characterized in that: A threaded hole (15) is provided on one side of the valve body (1), the pressing ring (11) is screwed into the threaded hole (15), and a dust ring (16) is provided between the pressing ring (11) and the valve seat (4).

3. The high-frequency V-shaped ball valve for an ACM device according to claim 1 is characterized in that: A sealing ring (17) is provided between the valve seat (4) and the valve body (1).

4. The high-frequency V-shaped ball valve for an ACM device according to claim 1 is characterized in that: A lower bushing (18) is provided between the bottom shaft (13) and the fixing hole (14).

5. The high-frequency V-shaped ball valve for an ACM device according to claim 1 is characterized in that: An upper bushing (19) is arranged between the inner side wall of the lower section of the valve stem hole (6) and the valve stem (2); a sealing packing (20) is arranged between the inner side wall of the upper section of the valve stem hole (6) and the valve stem (2); a packing gland (21) is arranged at the upper end of the sealing packing (20); a packing pressure plate (22) is arranged at the upper end of the packing gland (21); and the packing pressure plate (22) and the valve body (1) are fixed by bolts (23).

6. The high-frequency V-shaped ball valve for an ACM device according to claim 1 is characterized in that: A fixing pin (24) is provided between the valve ball (3) and the valve stem (2).

7. The high-frequency V-shaped ball valve for an ACM device according to claim 1 is characterized in that: A bottom shaft hole (25) is formed at the lower end of the valve body (1), the bottom shaft (13) is inserted into the bottom shaft hole (25) and fixed by a bottom flange (26), and a spiral wound gasket (27) is provided between the bottom flange (26) and the valve body (1).

8. The high-frequency V-shaped ball valve for an ACM device according to claim 1 is characterized in that: The valve ball (3) is of a double eccentric structure, and a V-shaped window (28) is provided on the valve ball (3).

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