One-piece ball valve

Abstract

The utility model discloses an integrated ball valve, the valve body is a cylindrical structure and is internally provided with a first flow channel and a second flow channel, the inner end of the first flow channel is provided with a sealing member, the ball cooperates with the sealing member and can be directly installed from the first flow channel, the top end of the ball is connected to the valve stem, the bottom end of the ball cooperates with the positioning shaft rod, the valve stem is connected to the first sleeve through a pressing piece, and the positioning shaft rod is threadedly connected to the second sleeve, the assembly method is simpler and more convenient, and the integrated structure does not need to consider the sealing of the connection between the split structure valve bodies, the processing is simpler, and the structural strength and stability are also better.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a valve, in particular to an integrated ball valve. Background Art

[0002] The opening and closing parts (balls) in the ball valve are driven by the valve stem and rotate around the axis of the ball valve. They can be used to regulate and control the fluid. The V-shaped ball core of the hard-sealed V-shaped ball valve and the metal valve seat with hard alloy overlay have a strong shear force, which is particularly suitable for media containing fibers, tiny solid particles, etc. The multi-way ball valve can not only flexibly control the confluence, diversion, and flow direction switching of the medium on the pipeline, but also close any channel to connect the other two channels. The ball valve should generally be installed horizontally in the pipeline.

[0003] In the prior art, the valve body of the ball valve is assembled by splicing two half-body valve bodies. This structure has poor stability, and the sealing between the two half-body valve bodies is difficult. At the same time, the assembly method of the internal components is also relatively complicated. Therefore, an improved technology is urgently needed to solve the above problems existing in the prior art. Utility Model Content

[0004] The utility model aims to provide an integrated ball valve, in which a sealing member is arranged at the inner end of the first flow channel of the valve body, the ball cooperates with the sealing member and can be installed directly from the first flow channel, the top end of the ball is connected to the valve stem, and the bottom end cooperates with the positioning shaft rod, the valve stem is connected to the first sleeve through a pressing piece, and the positioning shaft rod is threadedly connected to the second sleeve, the assembly method is simpler and more convenient, and the integrated structure does not need to consider the sealing of the connection between the split structure valve bodies, the processing is simpler, and the structural strength and stability are also better, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an integrated ball valve, comprising a valve body, a ball, a sealing member, a valve stem and a positioning shaft rod, the valve body being a cylindrical structure, a first flow channel and a second flow channel being arranged inside the valve body, the first flow channel and the second flow channel being connected to each other, the inner diameter of the first flow channel being larger than the inner diameter of the second flow channel, the valve body being provided with a first through hole at the top of the first flow channel, the valve body being provided with a second through hole at the bottom of the first flow channel, the second through hole being arranged coaxially with the first through hole, a first sleeve being arranged at the first through hole on the upper surface of the valve body, a second sleeve being arranged at the second through hole on the lower surface of the valve body, an internal thread cavity being arranged on the inner wall of the upper part of the first sleeve, the internal thread cavity of the first sleeve being matched with a pressing piece, and an internal thread being arranged on the inner wall of the second sleeve;

[0006] The pressing piece includes an externally threaded sleeve and a first external hexagonal head, the top of the externally threaded sleeve cooperates with the first external hexagonal head, the first external hexagonal head is provided with a third through hole, and the inner diameter of the third through hole is smaller than the inner diameter of the externally threaded sleeve;

[0007] The valve stem comprises a rod body, a square rod, an extension rod and a screw rod, the bottom of the rod body is provided with a square rod, the top of the rod body is provided with an extension rod, the top of the extension rod is provided with a screw rod, the rod body is arranged inside the first sleeve and the external threaded sleeve, the extension rod passes through the third through hole of the first external hexagonal head, the first external hexagonal head is pressed on the top of the rod body, the bottom of the rod body passes through the first through hole of the valve body, and the square rod is located inside the valve body;

[0008] The positioning shaft comprises a threaded rod, an insert rod and a shaft rod, the bottom of the threaded rod is provided with a second external hexagonal head, the top of the threaded rod is provided with an insert rod, the top of the insert rod is provided with a shaft rod, and the threaded rod is threadedly matched with the second sleeve;

[0009] The sealing member is arranged in the first flow channel of the valve body, a hemispherical groove is provided at one end of the sealing member away from the second flow channel, and a first channel is provided at the center of the sealing member;

[0010] The ball is arranged in the first flow channel of the valve body, the ball cooperates with the hemispherical groove of the seal, the top of the ball is provided with a square hole and cooperates with the square rod, and the bottom of the ball is provided with an axial groove and cooperates with the axial rod.

[0011] Preferably, the utility model provides an integrated ball valve, wherein a first sealing ring is provided at the bottom end inside the internal thread cavity of the first sleeve, and the bottom of the external thread sleeve is pressed on the first sealing ring.

[0012] Preferably, the utility model provides an integrated ball valve, wherein a second sealing ring is provided at the top end inside the second sleeve, and the top end of the threaded rod is pressed onto the second sealing ring.

[0013] Preferably, the utility model provides an integrated ball valve, wherein a second channel is formed through the ball body, and the second channel cooperates with the first channel of the sealing member.

[0014] Preferably, the utility model provides an integrated ball valve, wherein slots are provided on both sides of the top of the extension rod, the slots of the extension rod cooperate with one end of the handle, the screw rod cooperates with the locking nut, and the locking nut is pressed onto the handle.

[0015] Preferably, the utility model provides an integrated ball valve, wherein flanges are provided at both ends of the valve body.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] (1) The valve body is a cylindrical structure and is provided with a first flow channel and a second flow channel inside. A seal is provided at the inner end of the first flow channel. The ball cooperates with the seal and can be directly installed from the first flow channel. The top end of the ball is connected to the valve stem, and the bottom end cooperates with the positioning shaft rod. The valve stem is connected to the first sleeve through a pressing piece, and the positioning shaft rod is threadedly connected to the second sleeve. The assembly method is simpler and more convenient.

[0018] (2) Compared with the traditional two valve body splicing structure, the one-piece structure does not need to consider the sealing of the connection between the valve bodies, is simpler to process, and has better structural strength and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the enlarged structure of the utility model located at the first sleeve;

[0021] Figure 3 It is a schematic diagram of the enlarged structure of the utility model located at the second sleeve;

[0022] Figure 4 It is a schematic diagram of the valve body structure;

[0023] Figure 5 It is a schematic diagram of the pressing piece structure;

[0024] Figure 6 Schematic diagram of valve stem structure;

[0025] Figure 7 It is a schematic diagram of the positioning shaft structure;

[0026] Figure 8 It is a schematic diagram of the seal structure;

[0027] Fig. 9 Schematic diagram of the sphere structure.

[0028] In the figure: valve body 1, ball 2, sealing member 3, valve stem 4, positioning shaft rod 5, first flow channel 6, second flow channel 7, first through hole 8, second through hole 9, first sleeve 10, second sleeve 11, pressing piece 12, first sealing ring 13, second sealing ring 14, handle 15, locking nut 16, flange 17, second channel 201, hemispherical groove 301, first channel 302, rod body 401, square rod 402, extension rod 403, screw rod 404, slot 405, threaded rod 501, plug rod 502, shaft rod 503, second external hexagonal head 504, externally threaded sleeve 1201, first external hexagonal head 1202, third through hole 1203. DETAILED DESCRIPTION

[0029] The following will combine the embodiments and drawings of the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model;

[0030] It should be noted that, in the description of the present invention, the terms "inside", "outside", "upper", "lower", "both sides", "one end", "the other end", "left" and "right" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0031] See also Figure 1-9 The utility model provides a technical solution: an integrated ball valve, including a valve body 1, a ball body 2, a sealing member 3, a valve stem 4 and a positioning shaft rod 5. The valve body 1 is a cylindrical structure. A first flow channel 6 and a second flow channel 7 are arranged inside the valve body 1. The first flow channel 6 and the second flow channel 7 are connected to each other. The inner diameter of the first flow channel 6 is larger than the inner diameter of the second flow channel 7. The valve body 1 is provided with a first through hole 8 at the top of the first flow channel 6. The valve body 1 is provided with a second through hole 9 at the bottom of the first flow channel 6. The second through hole 9 is coaxially arranged with the first through hole 8. A first sleeve 10 is arranged on the upper surface of the valve body 1 and located at the first through hole 8. A second sleeve 11 is arranged on the lower surface of the valve body 1 and located at the second through hole 9. An internal thread cavity is arranged on the inner wall of the upper part of the first sleeve 10. The internal thread cavity of the first sleeve 10 cooperates with a pressing piece 12. The inner wall of the second sleeve 11 is provided with an internal thread. Flanges 17 are arranged at both ends of the valve body 1 to achieve connection with an external pipeline.

[0032] like Figure 5 As shown, the pressing piece 12 includes an external threaded sleeve 1201 and a first external hexagonal head 1202. The top of the external threaded sleeve 1201 cooperates with the first external hexagonal head 1202. The first external hexagonal head 1202 is provided with a third through hole 1203. The inner diameter of the third through hole 1203 is smaller than the inner diameter of the external threaded sleeve 1201.

[0033] like Figure 6As shown, the valve stem 4 includes a rod body 401, a square rod 402, an extension rod 403 and a screw 404. The square rod 402 is arranged at the bottom of the rod body 401, the extension rod 403 is arranged at the top of the rod body 401, and the screw 404 is arranged at the top of the extension rod 403. The rod body 401 is arranged inside the first sleeve 10 and the external threaded sleeve 1201, and the extension rod 403 passes through the third through hole 1203 of the first external hexagonal head 1202. The first external hexagonal head 1202 is pressed on the top of the rod body 401, and the bottom end of the internal thread cavity of the first sleeve 10 is provided with a first sealing ring 1 3. The bottom of the external threaded sleeve 1201 is pressed on the first sealing ring 13, and the first sealing ring 13 is used to ensure the sealing of the first sleeve 10. The bottom of the rod body 401 passes through the first through hole 8 of the valve body 1. The square rod 402 is located inside the valve body 1. The two sides of the top of the extension rod 403 are provided with grooves 405. The grooves 405 of the extension rod 403 are matched with one end of the handle 15. The screw rod 404 is matched with the locking nut 16. The locking nut 16 is pressed on the handle 15. The grooves 405 ensure that the handle 15 will not slip after being connected, so that the handle 15 drives the valve stem 4 to rotate;

[0034] like Figure 7 As shown, the positioning shaft rod 5 includes a threaded rod 501, an insert rod 502 and a shaft rod 503. The bottom of the threaded rod 501 is provided with a second outer hexagonal head 504, the top of the threaded rod 501 is provided with an insert rod 502, the top of the insert rod 502 is provided with a shaft rod 503, the threaded rod 501 is threadedly matched with the second sleeve 11, the top of the second sleeve 11 is provided with a second sealing ring 14, the top of the threaded rod 501 is pressed on the second sealing ring 14, and the second sealing ring 14 is used to ensure the sealing of the second sleeve 11;

[0035] like Figure 8 As shown, the seal 3 is disposed in the first flow channel 6 of the valve body 1, a hemispherical groove 301 is provided at one end of the seal 3 away from the second flow channel 7, and a first channel 302 is provided at the center of the seal 3;

[0036] like Fig. 9 As shown, the ball 2 is arranged in the first flow channel 6 of the valve body 1, the ball 2 cooperates with the hemispherical groove 301 of the seal 3, a square hole is opened on the top of the ball 2 and cooperates with the square rod 402, an axial groove is opened at the bottom of the ball 2 and cooperates with the axial rod 503, a second channel 201 is opened through the ball 2, and the second channel 201 cooperates with the first channel 302 of the seal 3. The opening and closing of the ball valve and the flow regulation are realized by the cooperation between the second channel 201 of the ball 2 and the first channel 302 of the seal 3.

[0037] Assembly method and principle of use: First, insert the seal 3 from the first flow channel 6 of the valve body 1 until it is pushed to the innermost end of the first flow channel 6, and then put the ball 2 into the valve body 1 and push it to the seal 3. Pass the valve stem 4 through the pressing piece 12 from bottom to top, and insert the valve stem 4 into the first sleeve 10 at the top of the valve body 1, adjust the angle of the sphere 2, and make the bottom square rod 402 of the valve stem 4 partially inserted into the square hole at the top of the sphere 2, and at the same time, match the external threaded sleeve 1201 of the pressing piece 12 with the internal threaded cavity of the first sleeve 10. At this time, the external hexagonal head 1202 of the pressing piece 12 is partially pressed on the top of the rod body 401 of the valve stem 4, and then screw the positioning shaft rod 5 into the second sleeve 11 at the bottom of the valve body 1, and match the shaft rod 503 of the positioning shaft rod 5 with the shaft groove at the bottom of the sphere 2. Finally, one end of the handle 15 is matched with the slot 405 at the top of the extension rod 403, and the lock nut 16 is fastened to the screw 404 to complete the installation of the handle 15, thereby completing the assembly. When in use, the handle 15 is turned, thereby driving the ball 2 to rotate through the valve stem 4. When the second channel 201 of the ball 2 is staggered with the first channel 302 of the seal 3, the ball valve is in a closed state. When the second channel 201 of the ball 2 and the first channel 302 of the seal 3 have an overlapping part, the ball valve is in an open state, and the flow rate can be adjusted at the same time. The utility model has a reasonable structure. The valve body 1 is a cylindrical structure and is provided with a first flow channel 6 and a second flow channel 7 inside. A sealing member 3 is provided at the inner end of the first flow channel 6. The ball 2 cooperates with the sealing member 3 and can be directly installed from the first flow channel 6. The top end of the ball 2 is connected to the valve stem 4, and the bottom end cooperates with the positioning shaft rod 5. The valve stem 4 is connected to the first sleeve 10 through a pressing piece 12, and the positioning shaft rod 5 is threadedly connected to the second sleeve 11. The assembly method is simpler and more convenient. In addition, the one-piece valve body structure does not need to consider the sealing of the connection between the valve bodies compared with the traditional two half valve body splicing structure, and the processing is simpler, and the structural strength and stability are also better.

[0038] The details not described in the present invention are all known technologies to those skilled in the art.

[0039] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified and replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An integrated ball valve, characterized in that: The invention comprises a valve body (1), a ball (2), a sealing member (3), a valve stem (4) and a positioning shaft (5); the valve body (1) is a cylindrical structure; a first flow channel (6) and a second flow channel (7) are arranged inside the valve body (1); the first flow channel (6) and the second flow channel (7) are connected to each other; the inner diameter of the first flow channel (6) is larger than the inner diameter of the second flow channel (7); a first through hole (8) is opened at the top of the valve body (1) located at the first flow channel (6); the valve body (1) is located at the first flow channel (6) A second through hole (9) is provided at the bottom of the valve body (1), the second through hole (9) is coaxially arranged with the first through hole (8), a first sleeve (10) is provided on the upper surface of the valve body (1) and located at the first through hole (8), a second sleeve (11) is provided on the lower surface of the valve body (1) and located at the second through hole (9), an internal thread cavity is provided on the inner wall of the upper part of the first sleeve (10), the internal thread cavity of the first sleeve (10) cooperates with the pressing piece (12), and an internal thread is provided on the inner wall of the second sleeve (11); The pressing piece (12) comprises an externally threaded sleeve (1201) and a first external hexagonal head (1202), the top end of the externally threaded sleeve (1201) cooperates with the first external hexagonal head (1202), the first external hexagonal head (1202) is provided with a third through hole (1203), and the inner diameter of the third through hole (1203) is smaller than the inner diameter of the externally threaded sleeve (1201); The valve stem (4) comprises a rod body (401), a square rod (402), an extension rod (403) and a screw rod (404); the bottom of the rod body (401) is provided with a square rod (402); the top of the rod body (401) is provided with an extension rod (403); the top of the extension rod (403) is provided with a screw rod (404); the rod body (401) is arranged inside the first sleeve (10) and the externally threaded sleeve (1201); the extension rod (403) passes through the third through hole (1203) of the first external hexagonal head (1202); the first external hexagonal head (1202) is pressed on the top of the rod body (401); the bottom of the rod body (401) passes through the first through hole (8) of the valve body (1); and the square rod (402) is located inside the valve body (1); The positioning shaft rod (5) comprises a threaded rod (501), an insertion rod (502) and a shaft rod (503); a second external hexagonal head (504) is arranged at the bottom of the threaded rod (501); a insertion rod (502) is arranged at the top of the threaded rod (501); a shaft rod (503) is arranged at the top of the insertion rod (502); the threaded rod (501) is threadedly matched with the second sleeve (11); The sealing member (3) is arranged in the first flow channel (6) of the valve body (1); a hemispherical groove (301) is provided at one end of the sealing member (3) away from the second flow channel (7); and a first channel (302) is provided at the center of the sealing member (3); The ball (2) is arranged in the first flow channel (6) of the valve body (1), the ball (2) cooperates with the hemispherical groove (301) of the sealing member (3), a square hole is opened on the top of the ball (2) and cooperates with the square rod (402), and an axial groove is opened on the bottom of the ball (2) and cooperates with the axial rod (503).

2. The one-piece ball valve according to claim 1, characterized in that: A first sealing ring (13) is provided at the bottom end of the internal thread cavity of the first sleeve (10), and the bottom of the external thread sleeve (1201) is pressed against the first sealing ring (13).

3. The one-piece ball valve according to claim 1, characterized in that: A second sealing ring (14) is provided at the top end inside the second sleeve (11), and the top end of the threaded rod (501) is pressed onto the second sealing ring (14).

4. The one-piece ball valve according to claim 1, characterized in that: The spherical body (2) is provided with a second channel (201) running through it, and the second channel (201) cooperates with the first channel (302) of the sealing member (3).

5. The one-piece ball valve according to claim 1, characterized in that: The top of the extension rod (403) is provided with slots (405) on both sides. The slots (405) of the extension rod (403) cooperate with one end of the handle (15). The screw rod (404) cooperates with a locking nut (16). The locking nut (16) is pressed on the handle (15).

6. The one-piece ball valve according to claim 1, characterized in that: Flanges (17) are provided at both ends of the valve body (1).

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