Residue-free three-way ball valve

Abstract

The utility model discloses a residue-free type three-way ball valve which comprises a valve body, a ball body is arranged in the valve body, a main circulation hole is formed in the ball body in a penetrating mode, an auxiliary circulation hole is formed in one side of the main circulation hole in a communicating mode, and the two ends of the main circulation hole and the auxiliary circulation hole are in a horn mouth shape. The valve body is fixedly provided with circulation channels corresponding to the two ends of the main circulation hole and the auxiliary circulation hole, the valve body is sleeved with a sealing sleeve valve seat, the positions, corresponding to the two ends of the main circulation hole and the auxiliary circulation hole, of the sealing sleeve valve seat are provided with middle holes in a communicated mode, and the middle holes and the corresponding circulation channels form medium channels. The medium channel is in a horn mouth shape, and the two ends of the main circulation hole and the end openings of the auxiliary circulation holes are matched with the corresponding middle holes. According to the utility model, no medium residue can be effectively realized, and the service life of the valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, and more specifically to a residue-free three-way ball valve. Background Technique

[0002] Three-way ball valves are used for the diversion, confluence and flow direction switching of media in pipelines. Most of the three-way ball valves in the prior art are T-shaped three-way ball valves with the publication number of CN202188168U. The rotation of the ball is realized by the rotation of the valve stem, so as to realize the flow of the medium in different directions. However, there is a gap between the ball and the valve body. When the medium flows, the joint between the ball and the valve seat is tight, which easily causes the medium to enter and remain between the ball and the valve body, resulting in corrosion of the outer side of the ball and the inner wall of the valve body. In addition, when the medium stops flowing, there will also be medium remaining inside the ball, thus causing corrosion inside the ball and reducing the service life of the ball valve. Therefore, the utility model proposes a residue-free three-way ball valve. Content of the Utility Model

[0003] The purpose of the utility model is to provide a residue-free three-way ball valve, which can effectively achieve residue-free of the medium and improve the service life of the utility model.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A residue-free three-way ball valve includes a valve body, a ball is arranged inside the valve body, upper valve covers and lower valve covers are respectively fixed at the upper and lower ends of the valve body through bolts, a main flow hole is arranged through the ball, a secondary flow hole is communicated with one side of the main flow hole, both ends of the main flow hole and the secondary flow hole are in a flared shape, the inside of the main flow hole is low and the outside is high, the inside of the secondary flow hole is high and the outside is low, flow channels are respectively fixed at positions of the valve body corresponding to both ends of the main flow hole and the secondary flow hole, a sealing sleeve valve seat is sleeved outside the valve body, intermediate holes are communicated at positions of the sealing sleeve valve seat corresponding to both ends of the main flow hole and the secondary flow hole, and the intermediate holes and the corresponding flow channels form a medium channel, the medium channel is in a flared shape, the diameter of the intermediate hole is smaller than the diameter of the outside of the flow channel, both ends of the main flow hole and the ports of the secondary flow hole are matched with the corresponding intermediate holes, and a plurality of embedded grooves are arranged on one side of the valve body in contact with the sealing sleeve valve seat, and elastic fixing structures are arranged in the embedded grooves.

[0006] Adopting the above technical solutions, the utility model has the following advantages:

[0007] The arrangement of the sealing sleeve valve seat and the elastic fixing structure of the present utility model enables the sphere and the valve body to be closely attached to the sealing sleeve valve seat respectively, and there is no gap between the sphere and the valve body, which can effectively prevent the medium from leaking and staying between the sphere and the valve body, play a role in preventing the medium from corroding the sphere and the valve body, effectively extend the service life of the present utility model, and further enhance the sealing performance between the sealing sleeve valve seat and the sphere; the two ends of the main flow hole and the auxiliary flow hole of the present utility model are in a flared shape, so that the two ends of the main flow hole are high points and the port of the auxiliary flow hole is a low point. When the medium stops flowing, the medium in the sphere will flow to the auxiliary flow hole and be discharged, which can effectively prevent the medium from remaining in the sphere. The arrangement of the medium channel in a flared shape makes the central hole a high point and the flow channel a low point, and the medium will flow towards the flow channel along its inclination, thereby preventing the medium from remaining in the central hole and the flow channel, effectively preventing the sphere, the valve body and the sealing sleeve valve seat from being corroded, and improving the service life of the present utility model.

[0008] Further, a valve stem is fixedly provided at the upper end of the sphere, the upper end of the valve stem passes through the upper valve cover and is fixedly connected with a handle, a set screw is provided at the center of the lower valve cover, the set screw is circumferentially positioned and connected with the lower end of the sphere, and a protective cover is provided outside the set screw.

[0009] Adopting the above technical solutions, the present utility model has the following advantages:

[0010] The arrangement of the valve stem, the set screw and the handle of the present utility model enables the rotation of the sphere to be controlled when the handle is rotated, so as to realize the switching of the flow direction of the medium and the diversion and confluence.

[0011] Further, a first sealing ring is embedded on the inner side of the surfaces where the upper and lower ends of the valve body are in contact with the upper valve cover and the lower valve cover respectively.

[0012] Adopting the above technical solutions, the present utility model has the following advantages:

[0013] The arrangement of the first sealing ring of the present utility model enhances the sealing performance between the valve body and the upper valve cover and the lower valve cover, and can effectively prevent the medium from leaking.

[0014] Further, a number of inner embedded annular grooves are provided on one side of the valve stem in contact with the upper valve cover, and a second sealing ring is provided in the inner embedded annular grooves.

[0015] Adopting the above technical solutions, the present utility model has the following advantages:

[0016] The arrangement of the second sealing ring of the present utility model enhances the sealing performance between the valve stem and the upper valve cover, and can effectively prevent the medium from leaking.

[0017] Further, the elastic fixing structure includes a high-elastic spring and a push plate. One side of the high-elastic spring is fixedly connected to the bottom end of the embedded groove, the other end of the high-elastic spring is fixedly connected to one side of the push plate, and the side of the push plate away from the high-elastic spring abuts against the position corresponding to the sealing sleeve valve seat.

[0018] Adopting the above technical solution, the utility model has the following advantages:

[0019] With the arrangement of the high-elastic spring and the push plate in the utility model, the elastic force of the high-elastic spring always pushes the push plate to squeeze against the sealing sleeve valve seat, so that the sealing sleeve valve seat is in close contact with the sphere, strengthening the sealing performance between the sealing sleeve valve seat and the sphere, and effectively preventing the leakage of the medium.

[0020] Further, sliding grooves are provided in a communicating manner at both ends of the embedded groove. Corresponding to the sliding grooves, sliding blocks are fixedly provided on the side of the push plate close to the high-elastic spring, and the sliding blocks are clamped in the corresponding sliding grooves.

[0021] Adopting the above technical solution, the utility model has the following advantages:

[0022] With the arrangement of the sliding blocks and the sliding grooves in the utility model, the push plate can be effectively prevented from detaching from the embedded groove. Description of the Drawings

[0023] The following further describes the utility model with reference to the drawings and embodiments.

[0024] Figure 1 is the schematic diagram of the formal cross-sectional structure of the utility model;

[0025] Figure 2 is the schematic diagram of the left cross-sectional structure of the utility model;

[0026] Figure 3 is the schematic diagram of the top cross-sectional structure of the utility model;

[0027] Figure 4 is the utility model Figure 1 The enlarged structural schematic diagram at A in.

[0028] Reference numerals: 1, valve body; 101, flow passage; 2, sphere; 201, auxiliary flow hole; 202, main flow hole; 3, sealing sleeve valve seat; 301, intermediate hole; 4, valve stem; 401, embedded ring groove; 5, embedded groove; 501, sliding groove; 6, push plate; 601, sliding block; 7, fastening bolt; 8, lower valve cover; 9, upper valve cover; 10, high-elastic spring; 11, handle; 12, second sealing ring; 13, first sealing ring. Detailed Description of the Invention

[0029] As Figures 1 to 3As shown, in a specific embodiment of the present invention, a residue-free three-way ball valve includes a valve body 1. A ball 2 is provided inside the valve body 1. An upper valve cover 9 and a lower valve cover 8 are respectively fixedly provided at the upper and lower ends of the valve body 1 through bolts. A main flow hole 202 penetrates through the ball 2. A secondary flow hole 201 communicates with one side of the main flow hole 202. Both ends of the main flow hole 202 and the secondary flow hole 201 are in a flared shape. The inside of the main flow hole 202 is low and the outside is high, while the inside of the secondary flow hole 201 is high and the outside is low. Flow channels 101 are fixedly provided at the positions of the valve body 1 corresponding to both ends of the main flow hole 202 and the secondary flow hole 201. A sealing sleeve valve seat 3 is sleeved outside the valve body 1. Intermediate holes 301 communicate with the positions of the sealing sleeve valve seat 3 corresponding to both ends of the main flow hole 202 and the secondary flow hole 201. The intermediate holes 301 and the corresponding flow channels 101 form a medium channel. The medium channel is in a flared shape. The diameter of the intermediate holes 301 is smaller than the diameter of the outside of the flow channels 101. Both ends of the main flow hole 202 and the ports of the secondary flow hole 201 are matched with the corresponding intermediate holes 301. On one side of the valve body 1 in contact with the sealing sleeve valve seat 3, a number of embedded grooves 5 are provided, and elastic fixing structures are provided in the embedded grooves 5.

[0030] Through the above settings, the settings of the sealing sleeve valve seat 3 and the elastic fixing structure of the present invention make the ball 2 and the valve body 1 closely fit with the sealing sleeve valve seat 3 respectively, and there are no gaps between the ball 2 and the valve body 1, which can effectively prevent the medium from leaking and staying between the ball 2 and the valve body 1, playing a role in preventing the medium from corroding the ball 2 and the valve body 1, effectively extending the service life of the present invention, and further strengthening the sealing performance between the sealing sleeve valve seat 3 and the ball 2; both ends of the main flow hole 202 and the secondary flow hole 201 of the present invention are in a flared shape, making both ends of the main flow hole 202 the high points and the port of the secondary flow hole 201 the low point. When the medium stops flowing, the medium in the ball 2 will flow to the secondary flow hole 201 and be discharged, which can effectively prevent the medium from remaining in the ball 2. The setting that the medium channel is in a flared shape makes the central hole the high point and the flow channel 101 the low point, and the medium will flow towards the flow channel 101 along its inclination, thereby preventing the medium from remaining in the central hole and the flow channel 101, effectively preventing the ball 2, the valve body 1, and the sealing sleeve valve seat 3 from being corroded, and improving the service life of the present invention.

[0031] As Figure 1 As shown, a valve stem 4 is fixedly provided at the upper end of the ball 2. The upper end of the valve stem 4 passes through the upper valve cover 9 and is fixedly connected to a handle 11. A set screw 7 is provided at the center of the lower valve cover 8. The set screw 7 is circumferentially positioned and connected to the lower end of the ball 2. A protective cover is provided outside the set screw 7; on the inner sides of the upper and lower ends of the valve body 1 in contact with the upper valve cover 9 and the lower valve cover 8 respectively, a first sealing ring 13 is embedded; on one side of the valve stem 4 in contact with the upper valve cover 9, a number of embedded ring grooves 401 are provided, and a second sealing ring 12 is provided in the embedded ring grooves 401.

[0032] With the above settings, the valve stem 4, the setscrew 7, and the handle 11 of the present utility model are arranged such that when the handle 11 is rotated, the rotation of the sphere 2 can be controlled to achieve the switching of the flow direction of the medium, as well as the splitting and merging of the flow; the setting of the first sealing ring 13 of the present utility model strengthens the sealing performance between the valve body 1, the upper valve cover 9, and the lower valve cover 8, and can effectively prevent the leakage of the medium; the setting of the second sealing ring 12 of the present utility model strengthens the sealing performance between the valve stem 4 and the upper valve cover 9, and can effectively prevent the leakage of the medium.

[0033] As Figure 1 and Figure 4 shown, the elastic fixing structure includes a high-elastic spring 10 and a push plate 6. One side of the high-elastic spring 10 is fixedly connected to the bottom end of the embedded groove 5, and the other end of the high-elastic spring 10 is fixedly connected to one side of the push plate 6. The side of the push plate 6 away from the high-elastic spring 10 abuts against the position corresponding to the sealing sleeve valve seat 3; both ends of the embedded groove 5 are provided with sliding grooves 501 communicating with each other, and corresponding to the sliding grooves 501 on the side of the push plate 6 close to the high-elastic spring 10, sliding blocks 601 are fixedly provided, and the sliding blocks 601 are clamped in the corresponding sliding grooves 501.

[0034] With the above settings, the high-elastic spring 10 and the push plate 6 of the present utility model are arranged such that the elastic force of the high-elastic spring 10 always pushes the push plate 6 to squeeze against the sealing sleeve valve seat 3, so that the sealing sleeve valve seat 3 is in close contact with the sphere 2, strengthening the sealing performance between the sealing sleeve valve seat 3 and the sphere 2, and can effectively prevent the leakage of the medium; the setting of the sliding blocks 601 and the sliding grooves 501 of the present utility model can effectively prevent the push plate 6 from disengaging from the embedded groove 5.

[0035] Working principle: When the medium flows in from point B and flows towards points D and C, it is only necessary to rotate the sphere 2 so that the main flow hole 202 corresponds to points B and D, and the secondary flow hole 201 corresponds to point C. At this time, the medium will flow to points D and C. When the medium stops flowing, the impact force weakens, and the medium in each flow channel 101 will flow out along its inclination and will not stay in the flow channel 101. The medium in the sphere 2 will flow to the center of the main flow hole 202 along the inclination of the main flow hole 202, and then flow out through the secondary flow hole 201 along the inclination of the secondary flow hole 201, so that the medium will not stay in the sphere 2, effectively preventing the corrosion of the flow channel 101 and the sphere 2 by the medium. When splitting is required and the medium needs to flow from point B to point C or from point C to point B, it is only necessary to rotate the sphere 2 so that one end of the main flow hole 202 is aligned with point C and the other end is sealed, and the secondary flow hole 201 is aligned with point B. When it is required to flow from point D to point C or from point C to point D, the same can be obtained by the above method. The installation method of the ball valve of the present utility model and the basic usage method of the ball valve are all disclosed in the prior art, so this application will not elaborate too much.

[0036] The above are only the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.

Claims

1. A residue-free three-way ball valve, comprising a valve body (1), wherein a ball (2) is arranged inside the valve body (1), and an upper valve cover (9) and a lower valve cover (8) are respectively and fixedly arranged at the upper and lower ends of the valve body (1) through bolts, and is characterized in that, A main flow hole (202) is penetrated through the sphere (2). A secondary flow hole (201) is communicated with one side of the main flow hole (202). Both ends of the main flow hole (202) and the secondary flow hole (201) are in a flared shape. The inside of the main flow hole (202) is lower at the inner side and higher at the outer side, and the inside of the secondary flow hole (201) is higher at the inner side and lower at the outer side. Flow channels (101) are fixedly arranged at positions of the valve body (1) corresponding to both ends of the main flow hole (202) and the secondary flow hole (201). A sealing sleeve valve seat (3) is sleeved outside the valve body (1). Intermediate holes (301) are communicated with positions of the sealing sleeve valve seat (3) corresponding to both ends of the main flow hole (202) and the secondary flow hole (201). The intermediate holes (301) and the corresponding flow channels (101) form a medium channel. The medium channel is in a flared shape. The diameter of the intermediate holes (301) is smaller than the diameter of the outer side of the flow channels (101). Both ends of the main flow hole (202) and the ports of the secondary flow hole (201) are matched with the corresponding intermediate holes (301). A plurality of inner embedding grooves (5) are arranged on one side of the valve body (1) in contact with the sealing sleeve valve seat (3), and elastic fixing structures are arranged in the inner embedding grooves (5).

2. The non-remnant three-way ball valve according to claim 1, wherein A valve rod (4) is fixedly arranged at the upper end of the sphere (2). The upper end of the valve rod (4) passes through the upper valve cover (9) and is fixedly connected with a handle (11). A fastening bolt (7) is arranged at the center of the lower valve cover (8). The fastening bolt (7) is circumferentially positioned and connected with the lower end of the sphere (2). A protective cover is arranged outside the fastening bolt (7).

3. The non-residual three-way ball valve according to claim 2, wherein Sealing rings one (13) are embedded on the inner sides of the contact surfaces of the upper and lower ends of the valve body (1) with the upper valve cover (9) and the lower valve cover (8) respectively.

4. The non-remaining three-way ball valve according to claim 3, characterized in that, A plurality of inner embedding ring grooves (401) are arranged on one side of the valve rod (4) in contact with the upper valve cover (9), and sealing rings two (12) are arranged in the inner embedding ring grooves (401).

5. A residue-free three-way ball valve according to claim 1, characterized in that, The elastic fixing structure includes a high-elastic spring (10) and a push plate (6). One side of the high-elastic spring (10) is fixedly connected with the bottom end of the inner embedding groove (5), and the other end of the high-elastic spring (10) is fixedly connected with one side of the push plate (6). The side of the push plate (6) away from the high-elastic spring (10) abuts against the corresponding position of the sealing sleeve valve seat (3).

6. The non-remnant three-way ball valve according to claim 5, characterized in that, Chutes (501) are communicated with both ends of the inner embedding groove (5). Sliders (601) are fixedly arranged at positions of the side of the push plate (6) close to the high-elastic spring (10) corresponding to the chutes (501). The sliders (601) are clamped in the corresponding chutes (501).

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